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Merge linux-tkg packages into a single package, add Void Linux and Clang/LLVM support (#63) 

* Add Clang/LLVM and Void Linux support

* merge packages, update .gitignore

* Stage 2 of merge

* Stage 3 of merge

* Stage 4 of merge

* Stage 5 of mrege, almost done

* Complete merge of linux-tkg, sync with master (undead PDS 5.8)

* Complete merge of linux-tkg, sync with master (undead PDS 5.8)

* Forgot to add all the patches

* Fix prompt, add config_hardened files

* Fix some stuff for Void

* Merge linux-tkg README, add Void Linux info

* typo

* Fix broken MuQSS on Void at least, Fix CPU opts patch apply

* update to 5.8.8, 5.4.64, block LLVM build with kernel 5.7 because it
seems to segfault at linking vmlinux, fix RC building on Void Linux

* update to 5.8.8, 5.4.64. seems making a confdir variable wasn't
necessary, revert it. sync with master.

* remove variables for messages in favor of defined functions in the Void
template

* resync Linux58-tkg back to master

* Clear patches is the same file for every version

* glitched base is the same file for 5.8 and 5.9, fix wrong version in kernel selection for 5.8, also just use * since it's the same .-.

* merge some patches that are the same together, fix building 5.4 BMQ

* BMQ and PDS ondemand are the same file, fix missing space on kernel version selection

* add Clang makedepends to PKGBUILD, add missing compiler option in customization.cfg, make GCC recommended

* Add kernel selection to install.sh

* Somehow this wasn't edited

* Add optional clang deps to install.sh

* Update gitignore to just ignore linux-5.x instead of commenting it out

* Missing fi

* forgot to sync back install.sh...

* generalize desktop profile configs, uncomment fsync and bcachefs in
customization.cfg, add Project C /PDS and Undead PDS to README, credit
plug, add kernel version selection to customization.cfg, fallback for
compiler selection

* Fix compiler selection error out on Void (for some reason xbps-src always
runs the else statement) also avoid conflict with _compiler, rename it
to _compiler_opt for the actual options in the make command

* oops

* Fix Void extra config not appearing, missing indent for _configfile,
missed PKGBUILD in other commit...

* remove globbing in install.sh

* Move loading of external configuration to the beginning of _tkg_initscript

* Change MuQSS note in README

* 5.4.68, 5.8.12, 5.9-rc7

* Update Project C patchset to v5.8-r3

* 5.8 bcachefs

* LLVM=1 was required to be used on make commands otherwise it would reset
config, we don't need to know if gcc was used to build a kernel (since
llvm is appended to llvm builds), remove the compiler_name if not using
llvm, make kernel versions variables in prepare

* _compileropt does not need to be llvm specific

* add fix for AMD GPU DCN3.0 build with clang in glitched base 5.9
https://lore.kernel.org/amd-gfx/4b5927dd-9f2d-40f9-ef63-007cf7b65f37@amd.com/T/#t

* Revert "add fix for AMD GPU DCN3.0 build with clang in glitched base 5.9"

This reverts commit 276e219f9fe89397332c91e601f34a37b3a0503f.

merged upstream

* Sync with linux-tkg master

* Just stick every patch into it's own kernel version folder

* update 5.4.72, 5.8.16

* check for sum check fail on Void, fix fsync patch

* Update README.md

* README.md formatting

* forgot to move that

* linux59-tkg: Import 5.9 version of the bcachefs patchset - https://gthub.com/koverstreet/bcachefs

Co-authored-by: Lukáš Horáček <flgx@protonmail.com>
master
Tony 2020-10-25 19:43:11 +07:00 committed by GitHub
parent 0e49a7815d
commit ea29e81042
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
91 changed files with 406241 additions and 1 deletions
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2
.gitignore vendored
Unescape Escape View File

@ -15,4 +15,4 @@
*.files
*/src/
*/pkg/
*/linux-*/
*/linux-5*/

468
linux-tkg/PKGBUILD
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@ -0,0 +1,468 @@
# Based on the file created for Arch Linux by:
# Tobias Powalowski <tpowa@archlinux.org>
# Thomas Baechler <thomas@archlinux.org>
# Contributor: Tk-Glitch <ti3nou at gmail dot com>
# Contributor: Hyper-KVM <hyperkvmx86 at gmail dot com>
plain ' .---.` `.---.'
plain ' `/syhhhyso- -osyhhhys/`'
plain ' .syNMdhNNhss/``.---.``/sshNNhdMNys.'
plain ' +sdMh.`+MNsssssssssssssssNM+`.hMds+'
plain ' :syNNdhNNhssssssssssssssshNNhdNNys:'
plain ' /ssyhhhysssssssssssssssssyhhhyss/'
plain ' .ossssssssssssssssssssssssssssso.'
plain ' :sssssssssssssssssssssssssssssssss:'
plain ' /sssssssssssssssssssssssssssssssssss/'
plain ' :sssssssssssssoosssssssoosssssssssssss:'
plain ' osssssssssssssoosssssssoossssssssssssso'
plain ' osssssssssssyyyyhhhhhhhyyyyssssssssssso'
plain ' /yyyyyyhhdmmmmNNNNNNNNNNNmmmmdhhyyyyyy/'
plain ' smmmNNNNNNNNNNNNNNNNNNNNNNNNNNNNNmmms'
plain ' /dNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNd/'
plain ' `:sdNNNNNNNNNNNNNNNNNNNNNNNNNds:`'
plain ' `-+shdNNNNNNNNNNNNNNNdhs+-`'
plain ' `.-:///////:-.`'
_where="$PWD" # track basedir as different Arch based distros are moving srcdir around
source "$_where"/customization.cfg # load default configuration from file
source "$_where"/linux-tkg-config/prepare
_distro="Arch"
_tkg_initscript
if [[ "$_sub" = rc* ]]; then
_srcpath="linux-${_basekernel}-${_sub}"
kernel_site="https://git.kernel.org/torvalds/t/linux-${_basekernel}-${_sub}.tar.gz"
else
_srcpath="linux-${_basekernel}"
kernel_site="https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-${_basekernel}.tar.xz"
patch_site="https://www.kernel.org/pub/linux/kernel/v5.x/patch-${_basekernel}.${_sub}.xz"
fi
if [ -n "$_custom_pkgbase" ]; then
pkgbase="${_custom_pkgbase}"
else
pkgbase=linux"${_basever}"-tkg-"${_cpusched}"${_compiler_name}
fi
pkgname=("${pkgbase}" "${pkgbase}-headers")
pkgver="${_basekernel}"."${_sub}"
pkgrel=4
pkgdesc='Linux-tkg'
arch=('x86_64') # no i686 in here
url="http://www.kernel.org/"
license=('GPL2')
makedepends=('xmlto' 'docbook-xsl' 'kmod' 'inetutils' 'bc' 'libelf' 'pahole' 'patchutils' 'flex' 'python-sphinx' 'python-sphinx_rtd_theme' 'graphviz' 'imagemagick' 'git')
if [ "$_compiler_name" = "-llvm" ]; then
makedepends+=( 'lld' 'clang' 'llvm')
fi
optdepends=('schedtool')
options=('!strip' 'docs')
case $_basever in
54)
opt_ver="4.19-v5.4"
source=("$kernel_site"
"$patch_site"
"https://raw.githubusercontent.com/graysky2/kernel_gcc_patch/master/enable_additional_cpu_optimizations_for_gcc_v10.1%2B_kernel_v4.19-v5.4.patch"
'config.x86_64' # stock Arch config
'config_hardened.x86_64' # hardened Arch config
90-cleanup.hook
cleanup
# ARCH Patches
0001-add-sysctl-to-disallow-unprivileged-CLONE_NEWUSER-by.patch
# TkG
0002-clear-patches.patch
0003-glitched-base.patch
0003-glitched-cfs.patch
0004-glitched-ondemand-muqss.patch
0004-glitched-muqss.patch
0004-5.4-ck1.patch
0005-glitched-ondemand-pds.patch
0005-glitched-pds.patch
0005-v5.4_undead-pds099o.patch
0006-add-acs-overrides_iommu.patch
0007-v5.4-fsync.patch
#0008-5.4-bcachefs.patch
0009-glitched-bmq.patch
0009-bmq_v5.4-r2.patch
0011-ZFS-fix.patch
0012-linux-hardened.patch
)
sha256sums=('bf338980b1670bca287f9994b7441c2361907635879169c64ae78364efc5f491'
'bce941bcb6c8148ac19cd2fa4f1e19c6c75f699a3bcdfd452df7484cff2a2353'
'27b7fc535ade94b636c3ec4e809e141831e9465a0ef55215a9852b87048629e2'
'55dd5117c1da17c9ec38d7bc995958958bcc8b7ebcfd81de1d4c7650b85537ab'
'1f4a20d6eaaa0d969af93152a65191492400c6aa838fc1c290b0dd29bb6019d8'
'1e15fc2ef3fa770217ecc63a220e5df2ddbcf3295eb4a021171e7edd4c6cc898'
'66a03c246037451a77b4d448565b1d7e9368270c7d02872fbd0b5d024ed0a997'
'31dc68e84aecfb7d069efb1305049122c65694676be8b955634abcf0675922a2'
'd02bf5ca08fd610394b9d3a0c3b176d74af206f897dee826e5cbaec97bb4a4aa'
'156a2c75fd228920e3c3da5e04a110afa403951bdfbb85772c2fd4b82fd24d61'
'7058e57fd68367b029adc77f2a82928f1433daaf02c8c279cb2d13556c8804d7'
'c605f638d74c61861ebdc36ebd4cb8b6475eae2f6273e1ccb2bbb3e10a2ec3fe'
'bc69d6e5ee8172b0242c8fa72d13cfe2b8d2b6601468836908a7dfe8b78a3bbb'
'815974c65f47301d2a5d1577bf95e8a4b54cad7d77f226e0065f83e763837c48'
'62496f9ca788996181ef145f96ad26291282fcc3fb95cdc04080dcf84365be33'
'eac7e5d6201528e64f4bdf5e286c842511e1afc52e1518dc8e7d11932bbe0a99'
'db03fbd179ec78941eefe1c0edde4c19071bc603511d0b5c06c04e412994b62e'
'19661ec0d39f9663452b34433214c755179894528bf73a42f6ba52ccf572832a'
'2d9260b80b43bbd605cf420d6bd53aa7262103dfd77196ba590ece5600b6dc0d'
'3832f828a9f402b153fc9a6829c5a4eaf6091804bcda3a0423c8e1b57e26420d'
'6a6a736cf1b3513d108bfd36f60baf50bb36b33aec21ab0d0ffad13602b7ff75'
'49262ce4a8089fa70275aad742fc914baa28d9c384f710c9a62f64796d13e104'
'aeb31404c26ee898d007b1f66cb9572c9884ad8eca14edc4587d68f6cba6de46')
;;
57)
opt_ver="5.7%2B"
source=("$kernel_site"
"$patch_site"
"https://raw.githubusercontent.com/graysky2/kernel_gcc_patch/master/enable_additional_cpu_optimizations_for_gcc_v10.1%2B_kernel_v5.7%2B.patch"
'config.x86_64' # stock Arch config
'config_hardened.x86_64' # hardened Arch config
90-cleanup.hook
cleanup
# ARCH Patches
0001-add-sysctl-to-disallow-unprivileged-CLONE_NEWUSER-by.patch
# TkG
0002-clear-patches.patch
0003-glitched-base.patch
0003-glitched-cfs.patch
0004-glitched-ondemand-muqss.patch
0004-glitched-muqss.patch
0004-5.7-ck1.patch
0005-glitched-ondemand-pds.patch
0005-glitched-pds.patch
0005-v5.7_undead-pds099o.patch
0006-add-acs-overrides_iommu.patch
0007-v5.7-fsync.patch
0008-5.7-bcachefs.patch
0009-glitched-ondemand-bmq.patch
0009-glitched-bmq.patch
0009-prjc_v5.7-r3.patch
0011-ZFS-fix.patch
0012-linux-hardened.patch
0012-misc-additions.patch
)
sha256sums=('de8163bb62f822d84f7a3983574ec460060bf013a78ff79cd7c979ff1ec1d7e0'
'66a0173a13cd58015f5bf1b14f67bfa15dc1db5d8e7225fcd95ac2e9a5341653'
'1f56a2466bd9b4477925682d8f944fabb38727140e246733214fe50aa326fc47'
'6313ccad7f8e4d8ce09dd5bdb51b8dfa124d0034d7097ba47008380a14a84f09'
'15ce09447b7e9b28425c1df5961c955378f2829e4115037337eef347b1db3d9d'
'1e15fc2ef3fa770217ecc63a220e5df2ddbcf3295eb4a021171e7edd4c6cc898'
'66a03c246037451a77b4d448565b1d7e9368270c7d02872fbd0b5d024ed0a997'
'31dc68e84aecfb7d069efb1305049122c65694676be8b955634abcf0675922a2'
'd02bf5ca08fd610394b9d3a0c3b176d74af206f897dee826e5cbaec97bb4a4aa'
'bbf332201423888257c9687bee06916a5dbbac2194f9df5b4126100c40e48d16'
'7058e57fd68367b029adc77f2a82928f1433daaf02c8c279cb2d13556c8804d7'
'c605f638d74c61861ebdc36ebd4cb8b6475eae2f6273e1ccb2bbb3e10a2ec3fe'
'bc69d6e5ee8172b0242c8fa72d13cfe2b8d2b6601468836908a7dfe8b78a3bbb'
'8d8aec86e34dbec6cc3a47f2cd55dc9212e95d36b6cd34d6e637c66731e7d838'
'62496f9ca788996181ef145f96ad26291282fcc3fb95cdc04080dcf84365be33'
'7fd8e776209dac98627453fda754bdf9aff4a09f27cb0b3766d7983612eb3c74'
'55be5e4c6254da0a9d34bbfac807a70d8b58b3f7b2ec852026195c4db5e263e2'
'19661ec0d39f9663452b34433214c755179894528bf73a42f6ba52ccf572832a'
'cd225e86d72eaf6c31ef3d7b20df397f4cc44ddd04389850691292cdf292b204'
'd2214504c43f9d297a8ef68dffc198143bfebf85614b71637a71978d7a86bd78'
'9fad4a40449e09522899955762c8928ae17f4cdaa16e01239fd12592e9d58177'
'965a517a283f265a012545fbb5cc9e516efc9f6166d2aa1baf7293a32a1086b7'
'b2a2ae866fc3f1093f67e69ba59738827e336b8f800fb0487599127f7f3ef881'
'49262ce4a8089fa70275aad742fc914baa28d9c384f710c9a62f64796d13e104'
'6821f92bd2bde3a3938d17b070d70f18a2f33cae81647567b5a4d94c9cd75f3d'
'bdc60c83cd5fbf9912f9201d6e4fe3c84fe5f634e6823bd8e78264ad606b3a9e')
;;
58)
opt_ver="5.8%2B"
source=("$kernel_site"
"$patch_site"
"https://raw.githubusercontent.com/graysky2/kernel_gcc_patch/master/enable_additional_cpu_optimizations_for_gcc_v10.1%2B_kernel_v5.8%2B.patch"
'config.x86_64' # stock Arch config
#'config_hardened.x86_64' # hardened Arch config
90-cleanup.hook
cleanup
# ARCH Patches
0001-add-sysctl-to-disallow-unprivileged-CLONE_NEWUSER-by.patch
# TkG
0002-clear-patches.patch
0003-glitched-base.patch
0003-glitched-cfs.patch
#0004-glitched-ondemand-muqss.patch
#0004-glitched-muqss.patch
#0004-5.8-ck1.patch
0005-undead-glitched-ondemand-pds.patch
0005-undead-glitched-pds.patch
0005-v5.8_undead-pds099o.patch
0005-glitched-pds.patch
0006-add-acs-overrides_iommu.patch
0007-v5.8-fsync.patch
0008-5.8-bcachefs.patch
0009-glitched-ondemand-bmq.patch
0009-glitched-bmq.patch
0009-prjc_v5.8-r3.patch
0011-ZFS-fix.patch
#0012-linux-hardened.patch
0012-misc-additions.patch
)
sha256sums=('e7f75186aa0642114af8f19d99559937300ca27acaf7451b36d4f9b0f85cf1f5'
'2ea49982bd10e4c880d49051535bd820e276dd3235c3c913b255aaaadc707e1d'
'5ab29eb64e57df83b395a29a6a4f89030d142feffbfbf73b3afc6d97a2a7fd12'
'ac66686b0e1ed057ea5f099cd00366decc00f999aa1cb19ba8d3ccf9f92d60e2'
'1e15fc2ef3fa770217ecc63a220e5df2ddbcf3295eb4a021171e7edd4c6cc898'
'66a03c246037451a77b4d448565b1d7e9368270c7d02872fbd0b5d024ed0a997'
'f6383abef027fd9a430fd33415355e0df492cdc3c90e9938bf2d98f4f63b32e6'
'35a7cde86fb94939c0f25a62b8c47f3de0dbd3c65f876f460b263181b3e92fc0'
'b9ebe0ae69bc2b2091d6bfcf6c7875a87ea7969fcfa4e306c48d47a60f9ef4d6'
'7058e57fd68367b029adc77f2a82928f1433daaf02c8c279cb2d13556c8804d7'
'62496f9ca788996181ef145f96ad26291282fcc3fb95cdc04080dcf84365be33'
'7fd8e776209dac98627453fda754bdf9aff4a09f27cb0b3766d7983612eb3c74'
'31b172eb6a0c635a8d64cc1c2e8181d9f928ee991bd44f6e556d1713b815f8d9'
'87bca363416655bc865fcb2cc0d1532cb010a61d9b9f625e3c15cd12eeee3a59'
'19661ec0d39f9663452b34433214c755179894528bf73a42f6ba52ccf572832a'
'cd225e86d72eaf6c31ef3d7b20df397f4cc44ddd04389850691292cdf292b204'
'86414a20225deec084e0e48b35552b3a4eef67f76755b32a10febb7b6308dcb7'
'9fad4a40449e09522899955762c8928ae17f4cdaa16e01239fd12592e9d58177'
'965a517a283f265a012545fbb5cc9e516efc9f6166d2aa1baf7293a32a1086b7'
'f5dbff4833a2e3ca94c202e5197894d5f1006c689ff149355353e77d2e17c943'
'49262ce4a8089fa70275aad742fc914baa28d9c384f710c9a62f64796d13e104'
'98311deeb474b39e821cd1e64198793d5c4d797155b3b8bbcb1938b7f11e8d74')
;;
59)
opt_ver="5.8%2B"
source=("$kernel_site"
$patch_site
"https://raw.githubusercontent.com/graysky2/kernel_gcc_patch/master/enable_additional_cpu_optimizations_for_gcc_v10.1%2B_kernel_v5.8%2B.patch"
"config.x86_64" # stock Arch config
#$hardened_config_file # hardened Arch config
90-cleanup.hook
cleanup
# ARCH Patches
0001-add-sysctl-to-disallow-unprivileged-CLONE_NEWUSER-by.patch
# TkG
0002-clear-patches.patch
0003-glitched-base.patch
0003-glitched-cfs.patch
0004-glitched-ondemand-muqss.patch
0004-glitched-muqss.patch
0004-5.9-ck1.patch
#0005-undead-glitched-ondemand-pds.patch
#0005-undead-glitched-pds.patch
#0005-v5.8_undead-pds099o.patch
0005-glitched-pds.patch
0006-add-acs-overrides_iommu.patch
0007-v5.9-fsync.patch
0008-5.9-bcachefs.patch
0009-glitched-ondemand-bmq.patch
0009-glitched-bmq.patch
0009-prjc_v5.9-r0.patch
0011-ZFS-fix.patch
#0012-linux-hardened.patch
0012-misc-additions.patch
)
sha256sums=('3239a4ee1250bf2048be988cc8cb46c487b2c8a0de5b1b032d38394d5c6b1a06'
'7edb7b9d06b02f9b88d868c74ab618baf899c94edb19a73291f640dbea55c312'
'5ab29eb64e57df83b395a29a6a4f89030d142feffbfbf73b3afc6d97a2a7fd12'
'20da98426048a222adeaf6606c9695d7a36974f4110a5adbe77c482898b59348'
'1e15fc2ef3fa770217ecc63a220e5df2ddbcf3295eb4a021171e7edd4c6cc898'
'66a03c246037451a77b4d448565b1d7e9368270c7d02872fbd0b5d024ed0a997'
'f6383abef027fd9a430fd33415355e0df492cdc3c90e9938bf2d98f4f63b32e6'
'35a7cde86fb94939c0f25a62b8c47f3de0dbd3c65f876f460b263181b3e92fc0'
'b9ebe0ae69bc2b2091d6bfcf6c7875a87ea7969fcfa4e306c48d47a60f9ef4d6'
'7058e57fd68367b029adc77f2a82928f1433daaf02c8c279cb2d13556c8804d7'
'c605f638d74c61861ebdc36ebd4cb8b6475eae2f6273e1ccb2bbb3e10a2ec3fe'
'bc69d6e5ee8172b0242c8fa72d13cfe2b8d2b6601468836908a7dfe8b78a3bbb'
'45a9ab99215ab3313be6e66e073d29154aac55bc58975a4df2dad116c918d27c'
'fca63d15ca4502aebd73e76d7499b243d2c03db71ff5ab0bf5cf268b2e576320'
'19661ec0d39f9663452b34433214c755179894528bf73a42f6ba52ccf572832a'
'b302ba6c5bbe8ed19b20207505d513208fae1e678cf4d8e7ac0b154e5fe3f456'
'3956c324798f25bcf8e6c5f6d160551245304c5cfa3a2cba73e5b1e350c364ce'
'9fad4a40449e09522899955762c8928ae17f4cdaa16e01239fd12592e9d58177'
'a557b342111849a5f920bbe1c129f3ff1fc1eff62c6bd6685e0972fc88e39911'
'88c7e308e474c845e0cc09e09bd223fc39876eca757abf6d6c3b8321f49ce1f1'
'49262ce4a8089fa70275aad742fc914baa28d9c384f710c9a62f64796d13e104'
'433b919e6a0be26784fb4304c43b1811a28f12ad3de9e26c0af827f64c0c316e')
;;
esac
export KBUILD_BUILD_HOST=archlinux
export KBUILD_BUILD_USER=$pkgbase
export KBUILD_BUILD_TIMESTAMP="$(date -Ru${SOURCE_DATE_EPOCH:+d @$SOURCE_DATE_EPOCH})"
prepare() {
rm -rf $pkgdir # Nuke the entire pkg folder so it'll get regenerated clean on next build
ln -s "${_where}/customization.cfg" "${srcdir}" # workaround
cd "${srcdir}/${_srcpath}"
_tkg_srcprep
}
build() {
cd "${srcdir}/${_srcpath}"
# Use custom compiler paths if defined
if [ -n "${CUSTOM_GCC_PATH}" ]; then
PATH=${CUSTOM_GCC_PATH}/bin:${CUSTOM_GCC_PATH}/lib:${CUSTOM_GCC_PATH}/include:${PATH}
fi
if [ "$_force_all_threads" = "true" ]; then
_force_all_threads="-j$((`nproc`*2))"
else
_force_all_threads="${MAKEFLAGS}"
fi
# ccache
if [ "$_noccache" != "true" ] && pacman -Qq ccache &> /dev/null; then
export PATH="/usr/lib/ccache/bin/:$PATH"
export CCACHE_SLOPPINESS="file_macro,locale,time_macros"
export CCACHE_NOHASHDIR="true"
msg2 'ccache was found and will be used'
fi
# document the TkG variables, excluding "_", "_EXT_CONFIG_PATH", and "_where".
declare -p | cut -d ' ' -f 3 | grep -P '^_(?!=|EXT_CONFIG_PATH|where)' > "${srcdir}/customization-full.cfg"
# remove -O2 flag and place user optimization flag
CFLAGS=${CFLAGS/-O2/}
CFLAGS+=" ${_compileropt}"
# build!
_runtime=$( time ( schedtool -B -n 1 -e ionice -n 1 make ${_force_all_threads} ${llvm_opt} LOCALVERSION= bzImage modules 2>&1 ) 3>&1 1>&2 2>&3 ) || _runtime=$( time ( make ${_force_all_threads} ${llvm_opt} LOCALVERSION= bzImage modules 2>&1 ) 3>&1 1>&2 2>&3 )
}
hackbase() {
pkgdesc="The $pkgdesc kernel and modules"
depends=('coreutils' 'kmod' 'initramfs')
optdepends=('linux-docs: Kernel hackers manual - HTML documentation that comes with the Linux kernel.'
'crda: to set the correct wireless channels of your country.'
'linux-firmware: Firmware files for Linux'
'modprobed-db: Keeps track of EVERY kernel module that has ever been probed. Useful for make localmodconfig.'
'nvidia-tkg: NVIDIA drivers for all installed kernels - non-dkms version.'
'nvidia-dkms-tkg: NVIDIA drivers for all installed kernels - dkms version.'
'update-grub: Simple wrapper around grub-mkconfig.')
provides=("linux=${pkgver}" "${pkgbase}" VIRTUALBOX-GUEST-MODULES WIREGUARD-MODULE)
replaces=(virtualbox-guest-modules-arch wireguard-arch)
cd "${srcdir}/${_srcpath}"
# get kernel version
local _kernver="$(<version)"
local modulesdir="$pkgdir/usr/lib/modules/$_kernver"
msg2 "Installing boot image..."
# systemd expects to find the kernel here to allow hibernation
# https://github.com/systemd/systemd/commit/edda44605f06a41fb86b7ab8128dcf99161d2344
install -Dm644 "$(make ${llvm_opt} -s image_name)" "$modulesdir/vmlinuz"
# Used by mkinitcpio to name the kernel
echo "$pkgbase" | install -Dm644 /dev/stdin "$modulesdir/pkgbase"
msg2 "Installing modules..."
make INSTALL_MOD_PATH="$pkgdir/usr" INSTALL_MOD_STRIP=1 modules_install
# remove build and source links
rm "$modulesdir"/{source,build}
# install cleanup pacman hook and script
sed -e "s|cleanup|${pkgbase}-cleanup|g" "${srcdir}"/90-cleanup.hook |
install -Dm644 /dev/stdin "${pkgdir}/usr/share/libalpm/hooks/90-${pkgbase}.hook"
install -Dm755 "${srcdir}"/cleanup "${pkgdir}/usr/share/libalpm/scripts/${pkgbase}-cleanup"
# install customization file, for reference
install -Dm644 "${srcdir}"/customization-full.cfg "${pkgdir}/usr/share/doc/${pkgbase}/customization.cfg"
}
hackheaders() {
pkgdesc="Headers and scripts for building modules for the $pkgdesc kernel"
provides=("linux-headers=${pkgver}" "${pkgbase}-headers=${pkgver}")
cd "${srcdir}/${_srcpath}"
local builddir="${pkgdir}/usr/lib/modules/$(<version)/build"
msg2 "Installing build files..."
install -Dt "$builddir" -m644 .config Makefile Module.symvers System.map \
localversion.* version vmlinux
install -Dt "$builddir/kernel" -m644 kernel/Makefile
install -Dt "$builddir/arch/x86" -m644 arch/x86/Makefile
cp -t "$builddir" -a scripts
# add objtool for external module building and enabled VALIDATION_STACK option
install -Dt "$builddir/tools/objtool" tools/objtool/objtool
# add xfs and shmem for aufs building
mkdir -p "$builddir"/{fs/xfs,mm}
msg2 "Installing headers..."
cp -t "$builddir" -a include
cp -t "$builddir/arch/x86" -a arch/x86/include
install -Dt "$builddir/arch/x86/kernel" -m644 arch/x86/kernel/asm-offsets.s
install -Dt "$builddir/drivers/md" -m644 drivers/md/*.h
install -Dt "$builddir/net/mac80211" -m644 net/mac80211/*.h
# http://bugs.archlinux.org/task/13146
install -Dt "$builddir/drivers/media/i2c" -m644 drivers/media/i2c/msp3400-driver.h
# http://bugs.archlinux.org/task/20402
install -Dt "$builddir/drivers/media/usb/dvb-usb" -m644 drivers/media/usb/dvb-usb/*.h
install -Dt "$builddir/drivers/media/dvb-frontends" -m644 drivers/media/dvb-frontends/*.h
install -Dt "$builddir/drivers/media/tuners" -m644 drivers/media/tuners/*.h
msg2 "Installing KConfig files..."
find . -name 'Kconfig*' -exec install -Dm644 {} "$builddir/{}" \;
msg2 "Removing unneeded architectures..."
local arch
for arch in "$builddir"/arch/*/; do
[[ $arch = */x86/ ]] && continue
echo "Removing $(basename "$arch")"
rm -r "$arch"
done
msg2 "Removing documentation..."
rm -r "$builddir/Documentation"
msg2 "Removing broken symlinks..."
find -L "$builddir" -type l -printf 'Removing %P\n' -delete
msg2 "Removing loose objects..."
find "$builddir" -type f -name '*.o' -printf 'Removing %P\n' -delete
msg2 "Stripping build tools..."
local file
while read -rd '' file; do
case "$(file -bi "$file")" in
application/x-sharedlib\;*) # Libraries (.so)
strip -v $STRIP_SHARED "$file" ;;
application/x-archive\;*) # Libraries (.a)
strip -v $STRIP_STATIC "$file" ;;
application/x-executable\;*) # Binaries
strip -v $STRIP_BINARIES "$file" ;;
application/x-pie-executable\;*) # Relocatable binaries
strip -v $STRIP_SHARED "$file" ;;
esac
done < <(find "$builddir" -type f -perm -u+x ! -name vmlinux -print0)
msg2 "Adding symlink..."
mkdir -p "$pkgdir/usr/src"
ln -sr "$builddir" "$pkgdir/usr/src/$pkgbase"
echo "Stripping vmlinux..."
strip -v $STRIP_STATIC "$builddir/vmlinux"
if [ $_NUKR = "true" ]; then
rm -rf "$srcdir" # Nuke the entire src folder so it'll get regenerated clean on next build
fi
}
source /dev/stdin <<EOF
package_${pkgbase}() {
hackbase
}
package_${pkgbase}-headers() {
hackheaders
}
EOF

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**Due to intel_pstate poor performances as of late, I have decided to set it to passive mode to make use of the acpi_cpufreq governors passthrough, keeping full support for turbo frequencies.**
### MuQSS is not an available option for 5.8
## Nvidia prop drivers need to be patched (https://github.com/Frogging-Family/nvidia-all can do that automatically for you)
Custom Linux kernels with specific CPU schedulers related patchsets selector (CFS is an option for every kernel) with added tweaks for a nice interactivity/performance balance, aiming for the best gaming experience.
- 5.9.y (Project C / PDS & BMQ, MuQSS)
- 5.8.y (Undead PDS, Project C / PDS & BMQ)
- 5.7.y (MuQSS, PDS, Project C / BMQ)
- 5.4.y (MuQSS, PDS, BMQ)
MuQSS : http://ck-hack.blogspot.com/
Project C / PDS & BMQ : http://cchalpha.blogspot.com/
Undead PDS: PDS-mq was originally created by Alfred Chen : http://cchalpha.blogspot.com/
While he dropped it with kernel 5.1 in favor of its BMQ evolution/rework, my pretty bad gaming experiences with BMQ up to this point convinced me to keep PDS afloat for as long as it'll make sense/I'll be able to.
Various personalization options available and userpatches support (put your own patches in the same dir as the PKGBUILD, with the ".mypatch" extension). The options built with are installed to `/usr/share/doc/$pkgbase/customization.cfg`, where `$pkgbase` is the package name.
Comes with a slightly modified Arch config asking for a few core personalization settings at compilation time.
If you want to streamline your kernel config for lower footprint and faster compilations : https://wiki.archlinux.org/index.php/Modprobed-db
You can optionally enable support for it at the beginning of the PKGBUILD file. **Make sure to read everything you need to know about it as there are big caveats making it NOT recommended for most users**.
## Other stuff included:
- Graysky's per-CPU-arch native optimizations - https://github.com/graysky2/kernel_gcc_patch
- memory management and swapping tweaks
- scheduling tweaks
- optional "Zenify" patchset using core blk, mm and scheduler tweaks from Zen
- CFS tweaks
- using yeah TCP congestion algo by default
- using cake network queue management system
- using vm.max_map_count=524288 by default
- cherry-picked clear linux patches
- **optional** overrides for missing ACS capabilities
- **optional** Fsync support (proton)
- **optional** ZFS fpu symbols (<5.9)
## Install procedure
### DEB (Debian, Ubuntu and derivatives) and RPM (Fedora, SUSE and derivatives) based distributions
```
git clone https://github.com/Frogging-Family/linux-tkg.git
cd linux-tkg/linux-tkg
# Optional: edit customization.cfg file
./install.sh install
```
Uninstalling custom kernels installed through the script has to be done
manually. The script can can help out with some useful information:
```
cd path/to/linux-tkg/linux-tkg
./install.sh uninstall-help
```
### Void Linux
```
git clone -b tkg https://github.com/Hyper-KVM/void-packages/
cd void-packages
./xbps-src binary-bootstrap
./xbps-src pkg -j$(nproc) linux-tkg
```
### Other linux distributions
If your distro is not DEB or RPM based, `install.sh` script can clone the kernel tree, patch and edit a `.config` file from your current distro's
that is expected at ``/boot/config-`uname -r`.config`` (otherwise it won't work as-is)
The command to do for that is:
```
./install.sh config
```

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# linux-TkG config file
# Linux distribution you are using, options are "Arch", "Void", "Ubuntu", "Debian", "Fedora" or "Suse".
# It is automatically set to "Arch" when using PKGBUILD.
# If left empty, the script will prompt
_distro=""
# Kernel Version - Options are "5.4", "5.7", "5.8", "5.9"
_version=""
#### MISC OPTIONS ####
# External config file to use - If the given file exists in path, it will override default config (customization.cfg) - Default is ~/.config/frogminer/linux-tkg.cfg
_EXT_CONFIG_PATH=~/.config/frogminer/linux-tkg.cfg
# [Arch specific] Set to anything else than "true" to limit cleanup operations and keep source and files generated during compilation.
# Default is "true".
_NUKR="true"
# Custom compiler root dirs - Leave empty to use system compilers
# Example: CUSTOM_GCC_PATH="/home/frog/PKGBUILDS/mostlyportable-gcc/gcc-mostlyportable-9.2.0"
CUSTOM_GCC_PATH=""
# Set to the number corresponding to a predefined profile to use it. Current list of available profiles :
# 1 - Custom (meaning nothing will be enforced and you get to configure everything)
# 2 - Ryzen desktop (performance)
# 3 - Generic Desktop (Performance)
_OPTIPROFILE=""
# Set to true to bypass makepkg.conf and use all available threads for compilation. False will respect your makepkg.conf options.
_force_all_threads="true"
# Set to true to prevent ccache from being used and set CONFIG_GCC_PLUGINS=y (which needs to be disabled for ccache to work properly)
_noccache="false"
# Set to true to use modprobed db to clean config from unneeded modules. Speeds up compilation considerably. Requires root - https://wiki.archlinux.org/index.php/Modprobed-db
# !!!! Make sure to have a well populated db !!!! - Leave empty to be asked about it at build time
_modprobeddb="false"
# Set to "1" to call make menuconfig, "2" to call make nconfig, "3" to call make xconfig, before building the kernel. Set to false to disable and skip the prompt.
_menunconfig=""
# Set to true to generate a kernel config fragment from your changes in menuconfig/nconfig. Set to false to disable and skip the prompt.
_diffconfig=""
# Set to the file name where the generated config fragment should be written to. Only used if _diffconfig is active.
_diffconfig_name=""
#### KERNEL OPTIONS ####
# [Arch specific] Name of the default config file to use from the linux???-tkg-config folder.
# Default is "config.x86_64" and Arch hardened is "config_hardened.x86_64".
# To get a complete hardened setup, you have to use "cfs" as _cpusched
_configfile=""
# Disable some non-module debugging - See PKGBUILD for the list
_debugdisable="false"
# LEAVE AN EMPTY VALUE TO BE PROMPTED ABOUT FOLLOWING OPTIONS AT BUILD TIME
# CPU scheduler - Options are "upds" (TkG's Undead PDS), "pds", "bmq", "muqss" or "cfs"
# "upds" is the recommended option for gaming
_cpusched=""
# Compiler to use - Options are "gcc" or "llvm".
# For advanced users.
_compiler=""
# CPU sched_yield_type - Choose what sort of yield sched_yield will perform
# For PDS and MuQSS: 0: No yield. (Recommended option for gaming on PDS and MuQSS)
# 1: Yield only to better priority/deadline tasks. (Default - can be unstable with PDS on some platforms)
# 2: Expire timeslice and recalculate deadline. (Usually the slowest option for PDS and MuQSS, not recommended)
# For BMQ: 0: No yield.
# 1: Deboost and requeue task. (Default)
# 2: Set rq skip task.
_sched_yield_type=""
# Round Robin interval is the longest duration two tasks with the same nice level will be delayed for. When CPU time is requested by a task, it receives a time slice equal
# to the rr_interval in addition to a virtual deadline. When using yield_type 2, a low value can help offset the disadvantages of rescheduling a process that has yielded.
# MuQSS default: 6ms"
# PDS default: 4ms"
# BMQ default: 2ms"
# Set to "1" for 2ms, "2" for 4ms, "3" for 6ms, "4" for 8ms, or "default" to keep the chosen scheduler defaults.
_rr_interval=""
# Set to "true" to disable FUNCTION_TRACER/GRAPH_TRACER, lowering overhead but limiting debugging and analyzing of kernel functions - Kernel default is "false"
_ftracedisable="false"
# Set to "true" to disable NUMA, lowering overhead, but breaking CUDA/NvEnc on Nvidia equipped systems - Kernel default is "false"
_numadisable="false"
# Set to "true" to enable misc additions - May contain temporary fixes pending upstream or changes that can break on non-Arch - Kernel default is "true"
_misc_adds="true"
# Set to "1" to use CattaRappa mode (enabling full tickless), "2" for tickless idle only, or "0" for periodic ticks.
# Full tickless can give higher performances in various cases but, depending on hardware, lower consistency. Just tickless idle can perform better on some platforms (mostly AMD based).
_tickless=""
# Setting this to to "true" can improve latency on PDS (at the cost of throughput) and improve throughput on other schedulers (at the cost of latency) - Can improve VMs performance - Kernel default is "false"
_voluntary_preempt=""
# Set to "true" to enable Device Tree and Open Firmware support. If you don't know about it, you don't need it - Default is "false"
_OFenable="false"
# Set to "true" to use ACS override patch - https://wiki.archlinux.org/index.php/PCI_passthrough_via_OVMF#Bypassing_the_IOMMU_groups_.28ACS_override_patch.29 - Kernel default is "false"
_acs_override=""
# Set to "true" to add Bcache filesystem support. You'll have to install bcachefs-tools-git from AUR for utilities - https://bcachefs.org/ - If in doubt, set to "false"
_bcachefs=""
# Set to "true" to add back missing symbol for AES-NI/AVX support on ZFS - https://github.com/NixOS/nixpkgs/blob/master/pkgs/os-specific/linux/kernel/export_kernel_fpu_functions.patch - Kernel default is "false"
_zfsfix=""
# Set to "true" to enable support for fsync, an experimental replacement for esync found in Valve Proton 4.11+ - https://steamcommunity.com/games/221410/announcements/detail/2957094910196249305
_fsync=""
# A selection of patches from Zen/Liquorix kernel and additional tweaks for a better gaming experience (ZENIFY) - Default is "true"
_zenify="true"
# compiler optimization level - 1. Optimize for performance (-O2); 2. Optimize harder (-O3); 3. Optimize for size (-Os) - Kernel default is "1"
_compileroptlevel="1"
# CPU compiler optimizations - Defaults to generic optimizations if left empty
# AMD CPUs : "k8" "k8sse3" "k10" "barcelona" "bobcat" "jaguar" "bulldozer" "piledriver" "steamroller" "excavator" "zen" "zen2"
# Intel CPUs : "mpsc"(P4 & older Netburst based Xeon) "atom" "core2" "nehalem" "westmere" "silvermont" "sandybridge" "ivybridge" "haswell" "broadwell" "skylake" "skylakex" "cannonlake" "icelake" "goldmont" "goldmontplus" "cascadelake" "cooperlake" "tigerlake"
# Other options :
# - "generic" (to share the package between machines with different CPUs)
# - "native" (use compiler autodetection and will prompt for P6_NOPS - Selecting your arch manually in the list above is recommended instead of this option)
_processor_opt=""
# MuQSS only - Make IRQ threading compulsory (FORCE_IRQ_THREADING) - Default is "false"
_irq_threading="false"
# MuQSS and PDS only - SMT (Hyperthreading) aware nice priority and policy support (SMT_NICE) - Kernel default is "true" - You can disable this on non-SMT/HT CPUs for lower overhead
_smt_nice=""
# Trust the CPU manufacturer to initialize Linux's CRNG (RANDOM_TRUST_CPU) - Kernel default is "false"
_random_trust_cpu="false"
# MuQSS only - CPU scheduler runqueue sharing - No sharing (RQ_NONE), SMT (hyperthread) siblings (RQ_SMT), Multicore siblings (RQ_MC), Symmetric Multi-Processing (RQ_SMP), NUMA (RQ_ALL)
# Valid values are "none", "smt", "mc", "mc-llc"(for zen), "smp", "all" - Kernel default is "smt"
_runqueue_sharing=""
# Timer frequency - "100" "500", "750" or "1000" - More options available in kernel config prompt when left empty depending on selected cpusched - Kernel default is "500" - For MuQSS, 100Hz is recommended
_timer_freq=""
# Default CPU governor - "performance", "ondemand", "schedutil" or leave empty for default (schedutil)
_default_cpu_gov="ondemand"
# Use an aggressive ondemand governor instead of default ondemand to improve performance on low loads/high core count CPUs while keeping some power efficiency from frequency scaling.
# It still requires you to either set ondemand as default governor or to select it some way.
_aggressive_ondemand="true"
# On some platforms, an acpi_cpufreq bug affects performance negatively. Set to "true" to disable it as a workaround, but it will use more power.
# https://github.com/Tk-Glitch/PKGBUILDS/issues/263
_disable_acpi_cpufreq=""
# You can pass a default set of kernel command line options here - example: "intel_pstate=passive nowatchdog amdgpu.ppfeaturemask=0xfffd7fff mitigations=off"
_custom_commandline="intel_pstate=passive"
#### SPESHUL OPTION ####
# If you want to bypass the stock naming scheme and enforce something else (example : "linux") - Useful for some bootloaders requiring manual entry editing on each release.
# !!! It will also change pkgname - If you don't explicitely need this, don't use it !!!
_custom_pkgbase=""
# [non-Arch specific] Kernel localversion. Putting it to "Mario" will make for example the kernel version be 5.7.0-tkg-Mario (given by uname -r)
# If left empty, it will use -tkg-"${_cpusched}" where "${_cpusched}" will be replaced by the user chosen scheduler
_kernel_localversion=""
#### USER PATCHES ####
# community patches - add patches (separated by a space) of your choice by name from the community-patches dir
# example: _community_patches="clear_nack_in_tend_isr.myrevert ffb_regression_fix.mypatch 0008-drm-amd-powerplay-force-the-trim-of-the-mclk-dpm-levels-if-OD-is-enabled.mypatch"
_community_patches=""
# You can use your own patches by putting them in the same folder as the PKGBUILD and giving them the .mypatch extension.
# You can also revert patches by putting them in the same folder as the PKGBUILD and giving them the .myrevert extension.
# Also, userpatches variable below must be set to true for the above to work.
_user_patches="true"
# Apply all user patches without confirmation - !!! NOT RECOMMENDED !!!
_user_patches_no_confirm="false"
#### CONFIG FRAGMENTS ####
# You can use your own kernel config fragments by putting them in the same folder as the PKGBUILD and giving them the .myfrag extension.
# Also, the config fragments variable below must be set to true for the above to work.
_config_fragments="true"
# Apply all config fragments without confirmation - !!! NOT RECOMMENDED !!!
_config_fragments_no_confirm="false"

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#!/bin/bash
msg2() {
echo -e " \033[1;34m->\033[1;0m \033[1;1m$1\033[1;0m" >&2
}
error() {
echo -e " \033[1;31m==> ERROR: $1\033[1;0m" >&2
}
warning() {
echo -e " \033[1;33m==> WARNING: $1\033[1;0m" >&2
}
plain() {
echo "$1" >&2
}
# Stop the script at any ecountered error
set -e
_where=`pwd`
srcdir="$_where"
source linux-tkg-config/prepare
# Run init script that is also run in PKGBUILD, it will define some env vars that we will use
_tkg_initscript
case "$_basever" in
"54")
opt_ver="4.19-v5.4"
;;
"57")
opt_ver="5.7%2B"
;;
"58")
opt_ver="5.8%2B"
;;
"59")
opt_ver="5.8%2B"
;;
esac
_cpu_opt_patch_link="https://raw.githubusercontent.com/graysky2/kernel_gcc_patch/master/enable_additional_cpu_optimizations_for_gcc_v10.1%2B_kernel_v${opt_ver}.patch"
source customization.cfg
if [ "$1" != "install" ] && [ "$1" != "config" ] && [ "$1" != "uninstall-help" ]; then
msg2 "Argument not recognised, options are:
- config : shallow clones the linux ${_basekernel}.x git tree into the folder linux-${_basekernel}, then applies on it the extra patches and prepares the .config file
by copying the one from the current linux system in /boot/config-`uname -r` and updates it.
- install : [RPM and DEB based distros only], does the config step, proceeds to compile, then prompts to install
- uninstall-help : [RPM and DEB based distros only], lists the installed kernels in this system, then gives a hint on how to uninstall them manually."
exit 0
fi
# Load external configuration file if present. Available variable values will overwrite customization.cfg ones.
if [ -e "$_EXT_CONFIG_PATH" ]; then
msg2 "External configuration file $_EXT_CONFIG_PATH will be used and will override customization.cfg values."
source "$_EXT_CONFIG_PATH"
fi
_misc_adds="false" # We currently don't want this enabled on non-Arch
if [ "$1" = "install" ] || [ "$1" = "config" ]; then
if [ -z $_distro ] && [ "$1" = "install" ]; then
while true; do
echo "Which linux distribution are you running ?"
echo "if it's not on the list, chose the closest one to it: Fedora/Suse for RPM, Ubuntu/Debian for DEB"
echo " 1) Debian"
echo " 2) Fedora"
echo " 3) Suse"
echo " 4) Ubuntu"
read -p "[1-4]: " _distro_index
if [ "$_distro_index" = "1" ]; then
_distro="Debian"
break
elif [ "$_distro_index" = "2" ]; then
_distro="Fedora"
break
elif [ "$_distro_index" = "3" ]; then
_distro="Suse"
break
elif [ "$_distro_index" = "4" ]; then
_distro="Ubuntu"
break
else
echo "Wrong index."
fi
done
fi
if [[ $1 = "install" && "$_distro" != "Ubuntu" && "$_distro" != "Debian" && "$_distro" != "Fedora" && "$_distro" != "Suse" ]]; then
msg2 "Variable \"_distro\" in \"customization.cfg\" hasn't been set to \"Ubuntu\", \"Debian\", \"Fedora\" or \"Suse\""
msg2 "This script can only install custom kernels for RPM and DEB based distros, though only those keywords are permitted. Exiting..."
exit 0
fi
if [ "$_compiler_name" = "llvm" ]; then
clang_deps="llvm clang lld"
fi
if [ "$_distro" = "Ubuntu" ] || [ "$_distro" = "Debian" ]; then
msg2 "Installing dependencies"
sudo apt install git build-essential kernel-package fakeroot libncurses5-dev libssl-dev ccache bison flex qtbase5-dev ${clang_deps} -y
elif [ "$_distro" = "Fedora" ]; then
msg2 "Installing dependencies"
sudo dnf install fedpkg fedora-packager rpmdevtools ncurses-devel pesign grubby qt5-devel libXi-devel gcc-c++ git ccache flex bison elfutils-libelf-devel openssl-devel dwarves rpm-build ${clang_deps} -y
elif [ "$_distro" = "Suse" ]; then
msg2 "Installing dependencies"
sudo zypper install -y rpmdevtools ncurses-devel pesign libXi-devel gcc-c++ git ccache flex bison elfutils libelf-devel openssl-devel dwarves make patch bc rpm-build libqt5-qtbase-common-devel libqt5-qtbase-devel lz4 ${clang_deps}
fi
# Force prepare script to avoid Arch specific commands if the user is using `config`
if [ "$1" = "config" ]; then
_distro=""
fi
if [ -d linux-${_basekernel}.orig ]; then
rm -rf linux-${_basekernel}.orig
fi
if [ -d linux-${_basekernel} ]; then
msg2 "Reseting files in linux-$_basekernel to their original state and getting latest updates"
cd "$_where"/linux-${_basekernel}
git checkout --force linux-$_basekernel.y
git clean -f -d -x
git pull
msg2 "Done"
cd "$_where"
else
msg2 "Shallow git cloning linux $_basekernel"
git clone --branch linux-$_basekernel.y --single-branch --depth=1 https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git linux-${_basekernel}
msg2 "Done"
fi
# Define current kernel subversion
if [ -z $_kernel_subver ]; then
cd "$_where"/linux-${_basekernel}
_kernelverstr=`git describe`
_kernel_subver=${_kernelverstr:5}
cd "$_where"
fi
cd "$_where"
msg2 "Downloading Graysky2's CPU optimisations patch"
wget "$_cpu_opt_patch_link"
# Follow Ubuntu install isntructions in https://wiki.ubuntu.com/KernelTeam/GitKernelBuild
# cd in linux folder, copy Ubuntu's current config file, update with new params
cd "$_where"/linux-${_basekernel}
msg2 "Copying current kernel's config and running make oldconfig..."
cp /boot/config-`uname -r` .config
if [ "$_distro" = "Debian" ]; then #Help Debian cert problem.
sed -i -e 's#CONFIG_SYSTEM_TRUSTED_KEYS="debian/certs/test-signing-certs.pem"#CONFIG_SYSTEM_TRUSTED_KEYS=""#g' .config
fi
yes '' | make oldconfig
msg2 "Done"
# apply linux-tkg patching script
_tkg_srcprep
msg2 "Configuration done."
fi
if [ "$1" = "install" ]; then
# Use custom compiler paths if defined
if [ -n "${CUSTOM_GCC_PATH}" ]; then
PATH=${CUSTOM_GCC_PATH}/bin:${CUSTOM_GCC_PATH}/lib:${CUSTOM_GCC_PATH}/include:${PATH}
fi
if [ "$_force_all_threads" = "true" ]; then
_thread_num=`nproc`
else
_thread_num=`expr \`nproc\` / 4`
if [ "$_thread_num" = "0" ]; then
_thread_num=1
fi
fi
# ccache
if [ "$_noccache" != "true" ]; then
if [ "$_distro" = "Ubuntu" ] || [ "$_distro" = "Debian" ]; then
export PATH="/usr/lib/ccache/bin/:$PATH"
elif [ "$_distro" = "Fedora" ] || [ "$_distro" = "Suse" ]; then
export PATH="/usr/lib64/ccache/:$PATH"
fi
export CCACHE_SLOPPINESS="file_macro,locale,time_macros"
export CCACHE_NOHASHDIR="true"
msg2 'ccache was found and will be used'
fi
if [ -z $_kernel_localversion ]; then
_kernel_flavor="tkg-${_cpusched}"
else
_kernel_flavor="tkg-${_kernel_localversion}"
fi
if [ "$_distro" = "Ubuntu" ] || [ "$_distro" = "Debian" ]; then
if make -j ${_thread_num} deb-pkg LOCALVERSION=-${_kernel_flavor}; then
msg2 "Building successfully finished!"
cd "$_where"
# Create DEBS folder if it doesn't exist
mkdir -p DEBS
# Move rpm files to RPMS folder inside the linux-tkg folder
mv "$_where"/*.deb "$_where"/DEBS/
read -p "Do you want to install the new Kernel ? y/[n]: " _install
if [[ $_install =~ [yY] ]] || [ $_install = "yes" ] || [ $_install = "Yes" ]; then
cd "$_where"
_kernelname=$_basekernel.$_kernel_subver-$_kernel_flavor
_headers_deb="linux-headers-${_kernelname}*.deb"
_image_deb="linux-image-${_kernelname}_*.deb"
_kernel_devel_deb="linux-libc-dev_${_kernelname}*.deb"
cd DEBS
sudo dpkg -i $_headers_deb $_image_deb $_kernel_devel_deb
fi
fi
elif [[ "$_distro" = "Fedora" || "$_distro" = "Suse" ]]; then
# Replace dashes with underscores, it seems that it's being done by binrpm-pkg
# Se we can actually refer properly to the rpm files.
_kernel_flavor=${_kernel_flavor//-/_}
if make -j ${_thread_num} rpm-pkg EXTRAVERSION="_${_kernel_flavor}"; then
msg2 "Building successfully finished!"
cd "$_where"
# Create RPMS folder if it doesn't exist
mkdir -p RPMS
# Move rpm files to RPMS folder inside the linux-tkg folder
mv ~/rpmbuild/RPMS/x86_64/* "$_where"/RPMS/
#Clean up the original folder, unneeded and takes a lot of space
rm -rf ~/rpmbuild/
read -p "Do you want to install the new Kernel ? y/[n]: " _install
if [ "$_install" = "y" ] || [ "$_install" = "Y" ] || [ "$_install" = "yes" ] || [ "$_install" = "Yes" ]; then
_kernelname=$_basekernel.${_kernel_subver}_$_kernel_flavor
_headers_rpm="kernel-headers-${_kernelname}*.rpm"
_kernel_rpm="kernel-${_kernelname}*.rpm"
_kernel_devel_rpm="kernel-devel-${_kernelname}*.rpm"
cd RPMS
if [ "$_distro" = "Fedora" ]; then
sudo dnf install $_headers_rpm $_kernel_rpm $_kernel_devel_rpm
elif [ "$_distro" = "Suse" ]; then
msg2 "Some files from 'linux-glibc-devel' will be replaced by files from the custom kernel-hearders package"
msg2 "To revert back to the original kernel headers do 'sudo zypper install -f linux-glibc-devel'"
sudo zypper install --replacefiles --allow-unsigned-rpm $_headers_rpm $_kernel_rpm $_kernel_devel_rpm
fi
msg2 "Install successful"
fi
fi
fi
fi
if [ "$1" = "uninstall-help" ]; then
cd "$_where"
msg2 "List of installed custom tkg kernels: "
if [ "$_distro" = "Ubuntu" ]; then
dpkg -l "*tkg*" | grep "linux.*tkg"
dpkg -l "*linux-libc-dev*" | grep "linux.*tkg"
msg2 "To uninstall a version, you should remove the linux-image, linux-headers and linux-libc-dev associated to it (if installed), with: "
msg2 " sudo apt remove linux-image-VERSION linux-headers-VERSION linux-libc-dev-VERSION"
msg2 " where VERSION is displayed in the lists above, uninstall only versions that have \"tkg\" in its name"
elif [ "$_distro" = "Fedora" ]; then
dnf list --installed kernel*
msg2 "To uninstall a version, you should remove the kernel, kernel-headers and kernel-devel associated to it (if installed), with: "
msg2 " sudo dnf remove --noautoremove kernel-VERSION kernel-devel-VERSION kernel-headers-VERSION"
msg2 " where VERSION is displayed in the second column"
elif [ "$_distro" = "Suse" ]; then
zypper packages --installed-only | grep "kernel.*tkg"
msg2 "To uninstall a version, you should remove the kernel, kernel-headers and kernel-devel associated to it (if installed), with: "
msg2 " sudo zypper remove --no-clean-deps kernel-VERSION kernel-devel-VERSION kernel-headers-VERSION"
msg2 " where VERSION is displayed in the second to last column"
fi
fi

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linux-tkg/linux-tkg-config/5.4/90-cleanup.hook
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[Trigger]
Type = File
Operation = Install
Operation = Upgrade
Operation = Remove
Target = usr/lib/modules/*/
Target = !usr/lib/modules/*/?*
[Action]
Description = Cleaning up...
When = PostTransaction
Exec = /usr/share/libalpm/scripts/cleanup
NeedsTargets

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linux-tkg/linux-tkg-config/5.4/cleanup
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#!/bin/bash
for _f in /usr/lib/modules/*tkg*; do
if [[ ! -e ${_f}/vmlinuz ]]; then
rm -rf "$_f"
fi
done
# vim:set ft=sh sw=2 et:

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linux-tkg/linux-tkg-config/5.7/90-cleanup.hook
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[Trigger]
Type = File
Operation = Install
Operation = Upgrade
Operation = Remove
Target = usr/lib/modules/*/
Target = !usr/lib/modules/*/?*
[Action]
Description = Cleaning up...
When = PostTransaction
Exec = /usr/share/libalpm/scripts/cleanup
NeedsTargets

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linux-tkg/linux-tkg-config/5.7/cleanup
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#!/bin/bash
for _f in /usr/lib/modules/*tkg*; do
if [[ ! -e ${_f}/vmlinuz ]]; then
rm -rf "$_f"
fi
done
# vim:set ft=sh sw=2 et:

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linux-tkg/linux-tkg-config/5.8/90-cleanup.hook
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[Trigger]
Type = File
Operation = Install
Operation = Upgrade
Operation = Remove
Target = usr/lib/modules/*/
Target = !usr/lib/modules/*/?*
[Action]
Description = Cleaning up...
When = PostTransaction
Exec = /usr/share/libalpm/scripts/cleanup
NeedsTargets

10
linux-tkg/linux-tkg-config/5.8/cleanup
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@ -0,0 +1,10 @@
#!/bin/bash
for _f in /usr/lib/modules/*tkg*; do
if [[ ! -e ${_f}/vmlinuz ]]; then
rm -rf "$_f"
fi
done
# vim:set ft=sh sw=2 et:

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14
linux-tkg/linux-tkg-config/5.9/90-cleanup.hook
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[Trigger]
Type = File
Operation = Install
Operation = Upgrade
Operation = Remove
Target = usr/lib/modules/*/
Target = !usr/lib/modules/*/?*
[Action]
Description = Cleaning up...
When = PostTransaction
Exec = /usr/share/libalpm/scripts/cleanup
NeedsTargets

10
linux-tkg/linux-tkg-config/5.9/cleanup
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#!/bin/bash
for _f in /usr/lib/modules/*tkg*; do
if [[ ! -e ${_f}/vmlinuz ]]; then
rm -rf "$_f"
fi
done
# vim:set ft=sh sw=2 et:

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linux-tkg/linux-tkg-config/generic-desktop-profile.cfg
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# linux-TkG config file
# Generic Desktop
#### KERNEL OPTIONS ####
# Disable some non-module debugging - See PKGBUILD for the list
_debugdisable="false"
# LEAVE AN EMPTY VALUE TO BE PROMPTED ABOUT FOLLOWING OPTIONS AT BUILD TIME
# Set to "true" to disable FUNCTION_TRACER/GRAPH_TRACER, lowering overhead but limiting debugging and analyzing of kernel functions - Kernel default is "false"
_ftracedisable="false"
# Set to "true" to disable NUMA, lowering overhead, but breaking CUDA/NvEnc on Nvidia equipped systems - Kernel default is "false"
_numadisable="false"
# Set to "true" to use explicit preemption points to lower latency at the cost of a small throughput loss - Can give a nice perf boost in VMs - Kernel default is "false"
_voluntary_preempt="false"
# A selection of patches from Zen/Liquorix kernel and additional tweaks for a better gaming experience (ZENIFY) - Default is "true"
_zenify="true"
# compiler optimization level - 1. Optimize for performance (-O2); 2. Optimize harder (-O3); 3. Optimize for size (-Os) - Kernel default is "2"
_compileroptlevel="1"
# Trust the CPU manufacturer to initialize Linux's CRNG (RANDOM_TRUST_CPU) - Kernel default is "false"
_random_trust_cpu="false"
# CPU scheduler runqueue sharing - No sharing (RQ_NONE), SMT (hyperthread) siblings (RQ_SMT), Multicore siblings (RQ_MC), Symmetric Multi-Processing (RQ_SMP), NUMA (RQ_ALL)
# Valid values are "none", "smt", "mc", "mc-llc"(for zen), "smp", "all" - Kernel default is "mc"
_runqueue_sharing="mc"
# Timer frequency - "500", "750" or "1000" - More options available in kernel config prompt when left empty depending on selected cpusched - Kernel default is "750"
_timer_freq="500"

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linux-tkg/linux-tkg-config/ryzen-desktop-profile.cfg
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# linux-TkG config file
# Ryzen Desktop
#### KERNEL OPTIONS ####
# Disable some non-module debugging - See PKGBUILD for the list
_debugdisable="false"
# LEAVE AN EMPTY VALUE TO BE PROMPTED ABOUT FOLLOWING OPTIONS AT BUILD TIME
# Set to "true" to disable FUNCTION_TRACER/GRAPH_TRACER, lowering overhead but limiting debugging and analyzing of kernel functions - Kernel default is "false"
_ftracedisable="false"
# Set to "true" to disable NUMA, lowering overhead, but breaking CUDA/NvEnc on Nvidia equipped systems - Kernel default is "false"
_numadisable="false"
# Set to "true" to use explicit preemption points to lower latency at the cost of a small throughput loss - Can give a nice perf boost in VMs - Kernel default is "false"
_voluntary_preempt="false"
# A selection of patches from Zen/Liquorix kernel and additional tweaks for a better gaming experience (ZENIFY) - Default is "true"
_zenify="true"
# compiler optimization level - 1. Optimize for performance (-O2); 2. Optimize harder (-O3); 3. Optimize for size (-Os) - Kernel default is "2"
_compileroptlevel="1"
# Trust the CPU manufacturer to initialize Linux's CRNG (RANDOM_TRUST_CPU) - Kernel default is "false"
_random_trust_cpu="false"
# CPU scheduler runqueue sharing - No sharing (RQ_NONE), SMT (hyperthread) siblings (RQ_SMT), Multicore siblings (RQ_MC), Symmetric Multi-Processing (RQ_SMP), NUMA (RQ_ALL)
# Valid values are "none", "smt", "mc", "mc-llc"(for zen), "smp", "all" - Kernel default is "mc"
_runqueue_sharing="mc-llc"
# Timer frequency - "500", "750" or "1000" - More options available in kernel config prompt when left empty depending on selected cpusched - Kernel default is "500"
_timer_freq="500"
# Default CPU governor - "performance", "ondemand" (tweaked), "schedutil" or leave empty for default (schedutil on AMD and legacy Intel, intel_pstate on modern Intel) - Enforcing an option will disable intel_pstate altogether!
_default_cpu_gov="performance"

156
linux-tkg/linux-tkg-patches/5.4/0001-add-sysctl-to-disallow-unprivileged-CLONE_NEWUSER-by.patch
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From 5ec2dd3a095442ec1a21d86042a4994f2ba24e63 Mon Sep 17 00:00:00 2001
Message-Id: <5ec2dd3a095442ec1a21d86042a4994f2ba24e63.1512651251.git.jan.steffens@gmail.com>
From: Serge Hallyn <serge.hallyn@canonical.com>
Date: Fri, 31 May 2013 19:12:12 +0100
Subject: [PATCH] add sysctl to disallow unprivileged CLONE_NEWUSER by default
Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
[bwh: Remove unneeded binary sysctl bits]
Signed-off-by: Daniel Micay <danielmicay@gmail.com>
---
kernel/fork.c | 15 +++++++++++++++
kernel/sysctl.c | 12 ++++++++++++
kernel/user_namespace.c | 3 +++
3 files changed, 30 insertions(+)
diff --git a/kernel/fork.c b/kernel/fork.c
index 07cc743698d3668e..4011d68a8ff9305c 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -102,6 +102,11 @@
#define CREATE_TRACE_POINTS
#include <trace/events/task.h>
+#ifdef CONFIG_USER_NS
+extern int unprivileged_userns_clone;
+#else
+#define unprivileged_userns_clone 0
+#endif
/*
* Minimum number of threads to boot the kernel
@@ -1555,6 +1560,10 @@ static __latent_entropy struct task_struct *copy_process(
if ((clone_flags & (CLONE_NEWUSER|CLONE_FS)) == (CLONE_NEWUSER|CLONE_FS))
return ERR_PTR(-EINVAL);
+ if ((clone_flags & CLONE_NEWUSER) && !unprivileged_userns_clone)
+ if (!capable(CAP_SYS_ADMIN))
+ return ERR_PTR(-EPERM);
+
/*
* Thread groups must share signals as well, and detached threads
* can only be started up within the thread group.
@@ -2348,6 +2357,12 @@ SYSCALL_DEFINE1(unshare, unsigned long, unshare_flags)
if (unshare_flags & CLONE_NEWNS)
unshare_flags |= CLONE_FS;
+ if ((unshare_flags & CLONE_NEWUSER) && !unprivileged_userns_clone) {
+ err = -EPERM;
+ if (!capable(CAP_SYS_ADMIN))
+ goto bad_unshare_out;
+ }
+
err = check_unshare_flags(unshare_flags);
if (err)
goto bad_unshare_out;
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index b86520ed3fb60fbf..f7dab3760839f1a1 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -105,6 +105,9 @@ extern int core_uses_pid;
extern char core_pattern[];
extern unsigned int core_pipe_limit;
#endif
+#ifdef CONFIG_USER_NS
+extern int unprivileged_userns_clone;
+#endif
extern int pid_max;
extern int pid_max_min, pid_max_max;
extern int percpu_pagelist_fraction;
@@ -513,6 +516,15 @@ static struct ctl_table kern_table[] = {
.proc_handler = proc_dointvec,
},
#endif
+#ifdef CONFIG_USER_NS
+ {
+ .procname = "unprivileged_userns_clone",
+ .data = &unprivileged_userns_clone,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+#endif
#ifdef CONFIG_PROC_SYSCTL
{
.procname = "tainted",
diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c
index c490f1e4313b998a..dd03bd39d7bf194d 100644
--- a/kernel/user_namespace.c
+++ b/kernel/user_namespace.c
@@ -24,6 +24,9 @@
#include <linux/projid.h>
#include <linux/fs_struct.h>
+/* sysctl */
+int unprivileged_userns_clone;
+
static struct kmem_cache *user_ns_cachep __read_mostly;
static DEFINE_MUTEX(userns_state_mutex);
--
2.15.1
From b5202296055dd333db4425120d3f93ef4e6a0573 Mon Sep 17 00:00:00 2001
From: "Jan Alexander Steffens (heftig)" <jan.steffens@gmail.com>
Date: Thu, 7 Dec 2017 13:50:48 +0100
Subject: ZEN: Add CONFIG for unprivileged_userns_clone
This way our default behavior continues to match the vanilla kernel.
---
init/Kconfig | 16 ++++++++++++++++
kernel/user_namespace.c | 4 ++++
2 files changed, 20 insertions(+)
diff --git a/init/Kconfig b/init/Kconfig
index 4592bf7997c0..f3df02990aff 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1004,6 +1004,22 @@ config USER_NS
If unsure, say N.
+config USER_NS_UNPRIVILEGED
+ bool "Allow unprivileged users to create namespaces"
+ default y
+ depends on USER_NS
+ help
+ When disabled, unprivileged users will not be able to create
+ new namespaces. Allowing users to create their own namespaces
+ has been part of several recent local privilege escalation
+ exploits, so if you need user namespaces but are
+ paranoid^Wsecurity-conscious you want to disable this.
+
+ This setting can be overridden at runtime via the
+ kernel.unprivileged_userns_clone sysctl.
+
+ If unsure, say Y.
+
config PID_NS
bool "PID Namespaces"
default y
diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c
index 6b9dbc257e34..107b17f0d528 100644
--- a/kernel/user_namespace.c
+++ b/kernel/user_namespace.c
@@ -27,7 +27,11 @@
#include <linux/sort.h>
/* sysctl */
+#ifdef CONFIG_USER_NS_UNPRIVILEGED
+int unprivileged_userns_clone = 1;
+#else
int unprivileged_userns_clone;
+#endif
static struct kmem_cache *user_ns_cachep __read_mostly;
static DEFINE_MUTEX(userns_state_mutex);

354
linux-tkg/linux-tkg-patches/5.4/0002-clear-patches.patch
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From 2ac70785613ef4c6b16414986bb18bd7b60d2a13 Mon Sep 17 00:00:00 2001
From: Arjan van de Ven <arjan@linux.intel.com>
Date: Mon, 14 Mar 2016 11:10:58 -0600
Subject: [PATCH] pci pme wakeups
Reduce wakeups for PME checks, which are a workaround for miswired
boards (sadly, too many of them) in laptops.
---
drivers/pci/pci.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index c25acace7d91..0ddebdad9f5b 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -61,7 +61,7 @@ struct pci_pme_device {
struct pci_dev *dev;
};
-#define PME_TIMEOUT 1000 /* How long between PME checks */
+#define PME_TIMEOUT 4000 /* How long between PME checks */
static void pci_dev_d3_sleep(struct pci_dev *dev)
{
--
2.20.1
From 7e7e36c67aa71d6a1ec5676d99d37c1fea389ceb Mon Sep 17 00:00:00 2001
From: Arjan van de Ven <arjan@linux.intel.com>
Date: Sat, 19 Mar 2016 21:32:19 -0400
Subject: [PATCH] intel_idle: tweak cpuidle cstates
Increase target_residency in cpuidle cstate
Tune intel_idle to be a bit less agressive;
Clear linux is cleaner in hygiene (wakupes) than the average linux,
so we can afford changing these in a way that increases
performance while keeping power efficiency
---
drivers/idle/intel_idle.c | 44 +++++++++++++++++++--------------------
1 file changed, 22 insertions(+), 22 deletions(-)
diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c
index 8b5d85c91e9d..5e2d813a048d 100644
--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -466,7 +466,7 @@ static struct cpuidle_state hsw_cstates[] = {
.desc = "MWAIT 0x01",
.flags = MWAIT2flg(0x01),
.exit_latency = 10,
- .target_residency = 20,
+ .target_residency = 120,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -474,7 +474,7 @@ static struct cpuidle_state hsw_cstates[] = {
.desc = "MWAIT 0x10",
.flags = MWAIT2flg(0x10) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 33,
- .target_residency = 100,
+ .target_residency = 900,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -482,7 +482,7 @@ static struct cpuidle_state hsw_cstates[] = {
.desc = "MWAIT 0x20",
.flags = MWAIT2flg(0x20) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 133,
- .target_residency = 400,
+ .target_residency = 1000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -490,7 +490,7 @@ static struct cpuidle_state hsw_cstates[] = {
.desc = "MWAIT 0x32",
.flags = MWAIT2flg(0x32) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 166,
- .target_residency = 500,
+ .target_residency = 1500,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -498,7 +498,7 @@ static struct cpuidle_state hsw_cstates[] = {
.desc = "MWAIT 0x40",
.flags = MWAIT2flg(0x40) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 300,
- .target_residency = 900,
+ .target_residency = 2000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -506,7 +506,7 @@ static struct cpuidle_state hsw_cstates[] = {
.desc = "MWAIT 0x50",
.flags = MWAIT2flg(0x50) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 600,
- .target_residency = 1800,
+ .target_residency = 5000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -514,7 +514,7 @@ static struct cpuidle_state hsw_cstates[] = {
.desc = "MWAIT 0x60",
.flags = MWAIT2flg(0x60) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 2600,
- .target_residency = 7700,
+ .target_residency = 9000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -534,7 +534,7 @@ static struct cpuidle_state bdw_cstates[] = {
.desc = "MWAIT 0x01",
.flags = MWAIT2flg(0x01),
.exit_latency = 10,
- .target_residency = 20,
+ .target_residency = 120,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -542,7 +542,7 @@ static struct cpuidle_state bdw_cstates[] = {
.desc = "MWAIT 0x10",
.flags = MWAIT2flg(0x10) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 40,
- .target_residency = 100,
+ .target_residency = 1000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -550,7 +550,7 @@ static struct cpuidle_state bdw_cstates[] = {
.desc = "MWAIT 0x20",
.flags = MWAIT2flg(0x20) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 133,
- .target_residency = 400,
+ .target_residency = 1000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -558,7 +558,7 @@ static struct cpuidle_state bdw_cstates[] = {
.desc = "MWAIT 0x32",
.flags = MWAIT2flg(0x32) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 166,
- .target_residency = 500,
+ .target_residency = 2000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -566,7 +566,7 @@ static struct cpuidle_state bdw_cstates[] = {
.desc = "MWAIT 0x40",
.flags = MWAIT2flg(0x40) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 300,
- .target_residency = 900,
+ .target_residency = 4000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -574,7 +574,7 @@ static struct cpuidle_state bdw_cstates[] = {
.desc = "MWAIT 0x50",
.flags = MWAIT2flg(0x50) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 600,
- .target_residency = 1800,
+ .target_residency = 7000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -582,7 +582,7 @@ static struct cpuidle_state bdw_cstates[] = {
.desc = "MWAIT 0x60",
.flags = MWAIT2flg(0x60) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 2600,
- .target_residency = 7700,
+ .target_residency = 9000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -603,7 +603,7 @@ static struct cpuidle_state skl_cstates[] = {
.desc = "MWAIT 0x01",
.flags = MWAIT2flg(0x01),
.exit_latency = 10,
- .target_residency = 20,
+ .target_residency = 120,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -611,7 +611,7 @@ static struct cpuidle_state skl_cstates[] = {
.desc = "MWAIT 0x10",
.flags = MWAIT2flg(0x10) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 70,
- .target_residency = 100,
+ .target_residency = 1000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -619,7 +619,7 @@ static struct cpuidle_state skl_cstates[] = {
.desc = "MWAIT 0x20",
.flags = MWAIT2flg(0x20) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 85,
- .target_residency = 200,
+ .target_residency = 600,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -627,7 +627,7 @@ static struct cpuidle_state skl_cstates[] = {
.desc = "MWAIT 0x33",
.flags = MWAIT2flg(0x33) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 124,
- .target_residency = 800,
+ .target_residency = 3000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -635,7 +635,7 @@ static struct cpuidle_state skl_cstates[] = {
.desc = "MWAIT 0x40",
.flags = MWAIT2flg(0x40) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 200,
- .target_residency = 800,
+ .target_residency = 3200,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -643,7 +643,7 @@ static struct cpuidle_state skl_cstates[] = {
.desc = "MWAIT 0x50",
.flags = MWAIT2flg(0x50) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 480,
- .target_residency = 5000,
+ .target_residency = 9000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -651,7 +651,7 @@ static struct cpuidle_state skl_cstates[] = {
.desc = "MWAIT 0x60",
.flags = MWAIT2flg(0x60) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 890,
- .target_residency = 5000,
+ .target_residency = 9000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -672,7 +672,7 @@ static struct cpuidle_state skx_cstates[] = {
.desc = "MWAIT 0x01",
.flags = MWAIT2flg(0x01),
.exit_latency = 10,
- .target_residency = 20,
+ .target_residency = 300,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
--
2.20.1
From b8211d4f79dd88dfc2d4bd52be46103ea0b70e3e Mon Sep 17 00:00:00 2001
From: Arjan van de Ven <arjan@linux.intel.com>
Date: Fri, 6 Jan 2017 15:34:09 +0000
Subject: [PATCH] ipv4/tcp: allow the memory tuning for tcp to go a little
bigger than default
---
net/ipv4/tcp.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index cf3c5095c10e..b30d51837b2d 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -3897,8 +3897,8 @@ void __init tcp_init(void)
tcp_init_mem();
/* Set per-socket limits to no more than 1/128 the pressure threshold */
limit = nr_free_buffer_pages() << (PAGE_SHIFT - 7);
- max_wshare = min(4UL*1024*1024, limit);
- max_rshare = min(6UL*1024*1024, limit);
+ max_wshare = min(16UL*1024*1024, limit);
+ max_rshare = min(16UL*1024*1024, limit);
init_net.ipv4.sysctl_tcp_wmem[0] = SK_MEM_QUANTUM;
init_net.ipv4.sysctl_tcp_wmem[1] = 16*1024;
--
2.20.1
From 050223869257b87e22636158a80da38d877248ed Mon Sep 17 00:00:00 2001
From: Arjan van de Ven <arjan@linux.intel.com>
Date: Sun, 18 Feb 2018 23:35:41 +0000
Subject: [PATCH] locking: rwsem: spin faster
tweak rwsem owner spinning a bit
---
kernel/locking/rwsem.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/kernel/locking/rwsem.c b/kernel/locking/rwsem.c
index eef04551eae7..1ec5ab4c8ff7 100644
--- a/kernel/locking/rwsem.c
+++ b/kernel/locking/rwsem.c
@@ -720,6 +720,7 @@ rwsem_spin_on_owner(struct rw_semaphore *sem, unsigned long nonspinnable)
struct task_struct *new, *owner;
unsigned long flags, new_flags;
enum owner_state state;
+ int i = 0;
owner = rwsem_owner_flags(sem, &flags);
state = rwsem_owner_state(owner, flags, nonspinnable);
@@ -753,7 +754,8 @@ rwsem_spin_on_owner(struct rw_semaphore *sem, unsigned long nonspinnable)
break;
}
- cpu_relax();
+ if (i++ > 1000)
+ cpu_relax();
}
rcu_read_unlock();
From b836ea320114643d4354b43acb6ec8bb06ada487 Mon Sep 17 00:00:00 2001
From: Arjan van de Ven <arjan@linux.intel.com>
Date: Thu, 2 Jun 2016 23:36:32 -0500
Subject: [PATCH] drivers: Initialize ata before graphics
ATA init is the long pole in the boot process, and its asynchronous.
move the graphics init after it so that ata and graphics initialize
in parallel
---
drivers/Makefile | 15 ++++++++-------
1 file changed, 8 insertions(+), 7 deletions(-)
diff --git a/drivers/Makefile b/drivers/Makefile
index aaef17cc6512..d08f3a394929 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -58,15 +58,8 @@ obj-y += char/
# iommu/ comes before gpu as gpu are using iommu controllers
obj-y += iommu/
-# gpu/ comes after char for AGP vs DRM startup and after iommu
-obj-y += gpu/
-
obj-$(CONFIG_CONNECTOR) += connector/
-# i810fb and intelfb depend on char/agp/
-obj-$(CONFIG_FB_I810) += video/fbdev/i810/
-obj-$(CONFIG_FB_INTEL) += video/fbdev/intelfb/
-
obj-$(CONFIG_PARPORT) += parport/
obj-$(CONFIG_NVM) += lightnvm/
obj-y += base/ block/ misc/ mfd/ nfc/
@@ -79,6 +72,14 @@ obj-$(CONFIG_IDE) += ide/
obj-y += scsi/
obj-y += nvme/
obj-$(CONFIG_ATA) += ata/
+
+# gpu/ comes after char for AGP vs DRM startup and after iommu
+obj-y += gpu/
+
+# i810fb and intelfb depend on char/agp/
+obj-$(CONFIG_FB_I810) += video/fbdev/i810/
+obj-$(CONFIG_FB_INTEL) += video/fbdev/intelfb/
+
obj-$(CONFIG_TARGET_CORE) += target/
obj-$(CONFIG_MTD) += mtd/
obj-$(CONFIG_SPI) += spi/

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72
linux-tkg/linux-tkg-patches/5.4/0003-glitched-cfs.patch
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@ -0,0 +1,72 @@
diff --git a/kernel/Kconfig.hz b/kernel/Kconfig.hz
index 2a202a846757..1d9c7ed79b11 100644
--- a/kernel/Kconfig.hz
+++ b/kernel/Kconfig.hz
@@ -4,7 +4,7 @@
choice
prompt "Timer frequency"
- default HZ_250
+ default HZ_500
help
Allows the configuration of the timer frequency. It is customary
to have the timer interrupt run at 1000 Hz but 100 Hz may be more
@@ -39,6 +39,13 @@ choice
on SMP and NUMA systems and exactly dividing by both PAL and
NTSC frame rates for video and multimedia work.
+ config HZ_500
+ bool "500 HZ"
+ help
+ 500 Hz is a balanced timer frequency. Provides fast interactivity
+ on desktops with great smoothness without increasing CPU power
+ consumption and sacrificing the battery life on laptops.
+
config HZ_1000
bool "1000 HZ"
help
@@ -52,6 +59,7 @@ config HZ
default 100 if HZ_100
default 250 if HZ_250
default 300 if HZ_300
+ default 500 if HZ_500
default 1000 if HZ_1000
config SCHED_HRTICK
diff --git a/kernel/Kconfig.hz b/kernel/Kconfig.hz
index 2a202a846757..1d9c7ed79b11 100644
--- a/kernel/Kconfig.hz
+++ b/kernel/Kconfig.hz
@@ -4,7 +4,7 @@
choice
prompt "Timer frequency"
- default HZ_500
+ default HZ_750
help
Allows the configuration of the timer frequency. It is customary
to have the timer interrupt run at 1000 Hz but 100 Hz may be more
@@ -46,6 +46,13 @@ choice
on desktops with great smoothness without increasing CPU power
consumption and sacrificing the battery life on laptops.
+ config HZ_750
+ bool "750 HZ"
+ help
+ 750 Hz is a good timer frequency for desktops. Provides fast
+ interactivity with great smoothness without sacrificing too
+ much throughput.
+
config HZ_1000
bool "1000 HZ"
help
@@ -60,6 +67,7 @@ config HZ
default 250 if HZ_250
default 300 if HZ_300
default 500 if HZ_500
+ default 750 if HZ_750
default 1000 if HZ_1000
config SCHED_HRTICK

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linux-tkg/linux-tkg-patches/5.4/0004-5.4-ck1.patch
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78
linux-tkg/linux-tkg-patches/5.4/0004-glitched-muqss.patch
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@ -0,0 +1,78 @@
From f7f49141a5dbe9c99d78196b58c44307fb2e6be3 Mon Sep 17 00:00:00 2001
From: Tk-Glitch <ti3nou@gmail.com>
Date: Wed, 4 Jul 2018 04:30:08 +0200
Subject: glitched - MuQSS
diff --git a/kernel/sched/MuQSS.c b/kernel/sched/MuQSS.c
index 84a1d08d68551..57c3036a68952 100644
--- a/kernel/sched/MuQSS.c
+++ b/kernel/sched/MuQSS.c
@@ -163,7 +167,11 @@ int sched_interactive __read_mostly = 1;
* are allowed to run five seconds as real time tasks. This is the total over
* all online cpus.
*/
+#ifdef CONFIG_ZENIFY
+int sched_iso_cpu __read_mostly = 25;
+#else
int sched_iso_cpu __read_mostly = 70;
+#endif
/*
* sched_yield_type - Choose what sort of yield sched_yield will perform.
diff --git a/kernel/Kconfig.hz b/kernel/Kconfig.hz
index 2a202a846757..1d9c7ed79b11 100644
--- a/kernel/Kconfig.hz
+++ b/kernel/Kconfig.hz
@@ -5,7 +5,7 @@
choice
prompt "Timer frequency"
default HZ_100 if SCHED_MUQSS
- default HZ_250_NODEF if !SCHED_MUQSS
+ default HZ_500_NODEF if !SCHED_MUQSS
help
Allows the configuration of the timer frequency. It is customary
to have the timer interrupt run at 1000 Hz but 100 Hz may be more
@@ -50,6 +50,20 @@ choice
on SMP and NUMA systems and exactly dividing by both PAL and
NTSC frame rates for video and multimedia work.
+ config HZ_500_NODEF
+ bool "500 HZ"
+ help
+ 500 Hz is a good timer frequency for desktops. Provides fast
+ interactivity with great smoothness without sacrificing too
+ much throughput.
+
+ config HZ_750_NODEF
+ bool "750 HZ"
+ help
+ 750 Hz is a good timer frequency for desktops. Provides fast
+ interactivity with great smoothness without sacrificing too
+ much throughput.
+
config HZ_1000_NODEF
bool "1000 HZ"
help
@@ -63,6 +70,8 @@ config HZ
default 100 if HZ_100
default 250 if HZ_250_NODEF
default 300 if HZ_300_NODEF
+ default 500 if HZ_500_NODEF
+ default 750 if HZ_750_NODEF
default 1000 if HZ_1000_NODEF
config SCHED_HRTICK
diff --git a/Makefile b/Makefile
index d4d36c61940b..4a9dfe471f1f 100644
--- a/Makefile
+++ b/Makefile
@@ -15,7 +15,6 @@ NAME = Kleptomaniac Octopus
CKVERSION = -ck1
CKNAME = MuQSS Powered
-EXTRAVERSION := $(EXTRAVERSION)$(CKVERSION)
# We are using a recursive build, so we need to do a little thinking
# to get the ordering right.

18
linux-tkg/linux-tkg-patches/5.4/0004-glitched-ondemand-muqss.patch
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@ -0,0 +1,18 @@
diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index 6b423eebfd5d..61e3271675d6 100644
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -21,10 +21,10 @@
#include "cpufreq_ondemand.h"
/* On-demand governor macros */
-#define DEF_FREQUENCY_UP_THRESHOLD (80)
-#define DEF_SAMPLING_DOWN_FACTOR (1)
+#define DEF_FREQUENCY_UP_THRESHOLD (45)
+#define DEF_SAMPLING_DOWN_FACTOR (5)
#define MAX_SAMPLING_DOWN_FACTOR (100000)
-#define MICRO_FREQUENCY_UP_THRESHOLD (95)
+#define MICRO_FREQUENCY_UP_THRESHOLD (45)
#define MICRO_FREQUENCY_MIN_SAMPLE_RATE (10000)
#define MIN_FREQUENCY_UP_THRESHOLD (1)
#define MAX_FREQUENCY_UP_THRESHOLD (100)

18
linux-tkg/linux-tkg-patches/5.4/0005-glitched-ondemand-pds.patch
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@ -0,0 +1,18 @@
diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index 6b423eebfd5d..61e3271675d6 100644
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -21,10 +21,10 @@
#include "cpufreq_ondemand.h"
/* On-demand governor macros */
-#define DEF_FREQUENCY_UP_THRESHOLD (63)
-#define DEF_SAMPLING_DOWN_FACTOR (1)
+#define DEF_FREQUENCY_UP_THRESHOLD (55)
+#define DEF_SAMPLING_DOWN_FACTOR (5)
#define MAX_SAMPLING_DOWN_FACTOR (100000)
-#define MICRO_FREQUENCY_UP_THRESHOLD (95)
+#define MICRO_FREQUENCY_UP_THRESHOLD (63)
#define MICRO_FREQUENCY_MIN_SAMPLE_RATE (10000)
#define MIN_FREQUENCY_UP_THRESHOLD (1)
#define MAX_FREQUENCY_UP_THRESHOLD (100)

213
linux-tkg/linux-tkg-patches/5.4/0005-glitched-pds.patch
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@ -0,0 +1,213 @@
From f7f49141a5dbe9c99d78196b58c44307fb2e6be3 Mon Sep 17 00:00:00 2001
From: Tk-Glitch <ti3nou@gmail.com>
Date: Wed, 4 Jul 2018 04:30:08 +0200
Subject: glitched - PDS
diff --git a/kernel/Kconfig.hz b/kernel/Kconfig.hz
index 2a202a846757..1d9c7ed79b11 100644
--- a/kernel/Kconfig.hz
+++ b/kernel/Kconfig.hz
@@ -4,7 +4,7 @@
choice
prompt "Timer frequency"
- default HZ_250
+ default HZ_500
help
Allows the configuration of the timer frequency. It is customary
to have the timer interrupt run at 1000 Hz but 100 Hz may be more
@@ -39,6 +39,13 @@ choice
on SMP and NUMA systems and exactly dividing by both PAL and
NTSC frame rates for video and multimedia work.
+ config HZ_500
+ bool "500 HZ"
+ help
+ 500 Hz is a balanced timer frequency. Provides fast interactivity
+ on desktops with great smoothness without increasing CPU power
+ consumption and sacrificing the battery life on laptops.
+
config HZ_1000
bool "1000 HZ"
help
@@ -52,6 +59,7 @@ config HZ
default 100 if HZ_100
default 250 if HZ_250
default 300 if HZ_300
+ default 500 if HZ_500
default 1000 if HZ_1000
config SCHED_HRTICK
diff --git a/kernel/Kconfig.hz b/kernel/Kconfig.hz
index 2a202a846757..1d9c7ed79b11 100644
--- a/kernel/Kconfig.hz
+++ b/kernel/Kconfig.hz
@@ -4,7 +4,7 @@
choice
prompt "Timer frequency"
- default HZ_500
+ default HZ_750
help
Allows the configuration of the timer frequency. It is customary
to have the timer interrupt run at 1000 Hz but 100 Hz may be more
@@ -46,6 +46,13 @@ choice
on desktops with great smoothness without increasing CPU power
consumption and sacrificing the battery life on laptops.
+ config HZ_750
+ bool "750 HZ"
+ help
+ 750 Hz is a good timer frequency for desktops. Provides fast
+ interactivity with great smoothness without sacrificing too
+ much throughput.
+
config HZ_1000
bool "1000 HZ"
help
@@ -60,6 +67,7 @@ config HZ
default 250 if HZ_250
default 300 if HZ_300
default 500 if HZ_500
+ default 750 if HZ_750
default 1000 if HZ_1000
config SCHED_HRTICK
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 9270a4370d54..30d01e647417 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -159,7 +159,7 @@ struct scan_control {
/*
* From 0 .. 100. Higher means more swappy.
*/
-int vm_swappiness = 60;
+int vm_swappiness = 20;
/*
* The total number of pages which are beyond the high watermark within all
* zones.
diff --git a/kernel/sched/pds.c b/kernel/sched/pds.c
index c2d831b242b6d18a47e0d87a9f5433a7748b52ff..5bc8d7a8f920c21feab69b2706a3328dc8d39f9a 100644
--- a/kernel/sched/pds.c
+++ b/kernel/sched/pds.c
@@ -409,12 +409,11 @@ struct rq *task_rq_lock(struct task_struct *p, struct rq_flags *rf)
* [L] ->on_rq
* RELEASE (rq->lock)
*
- * If we observe the old CPU in task_rq_lock(), the acquire of
+ * If we observe the old CPU in task_rq_lock, the acquire of
* the old rq->lock will fully serialize against the stores.
*
- * If we observe the new CPU in task_rq_lock(), the address
- * dependency headed by '[L] rq = task_rq()' and the acquire
- * will pair with the WMB to ensure we then also see migrating.
+ * If we observe the new CPU in task_rq_lock, the acquire will
+ * pair with the WMB to ensure we must then also see migrating.
*/
if (likely(rq == task_rq(p) && !task_on_rq_migrating(p))) {
return rq;
@@ -952,9 +953,9 @@ static inline void __set_task_cpu(struct task_struct *p, unsigned int cpu)
smp_wmb();
#ifdef CONFIG_THREAD_INFO_IN_TASK
- WRITE_ONCE(p->cpu, cpu);
+ p->cpu = cpu;
#else
- WRITE_ONCE(task_thread_info(p)->cpu, cpu);
+ task_thread_info(p)->cpu = cpu;
#endif
#endif
}
@@ -1035,7 +1036,7 @@ static void detach_task(struct rq *rq, struct task_struct *p, int target_cpu)
{
lockdep_assert_held(&rq->lock);
- WRITE_ONCE(p->on_rq ,TASK_ON_RQ_MIGRATING);
+ p->on_rq = TASK_ON_RQ_MIGRATING;
if (task_contributes_to_load(p))
rq->nr_uninterruptible++;
dequeue_task(p, rq, 0);
diff --git a/kernel/sched/pds_sched.h b/kernel/sched/pds_sched.h
index 20dcf19ea057627d91be07b4ec20f0827c30084c..24fa90ca63d144cc4f45d82d88407ea70d2d2edf 100644
--- a/kernel/sched/pds_sched.h
+++ b/kernel/sched/pds_sched.h
@@ -56,7 +56,7 @@ static inline int task_on_rq_queued(struct task_struct *p)
static inline int task_on_rq_migrating(struct task_struct *p)
{
- return READ_ONCE(p->on_rq) == TASK_ON_RQ_MIGRATING;
+ return p->on_rq == TASK_ON_RQ_MIGRATING;
}
enum {
diff --git a/init/Kconfig b/init/Kconfig
index 11fd9b502d06..e9bc34d3019b 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -948,7 +948,6 @@ config CGROUP_DEVICE
config CGROUP_CPUACCT
bool "Simple CPU accounting controller"
- depends on !SCHED_PDS
help
Provides a simple controller for monitoring the
total CPU consumed by the tasks in a cgroup.
diff --git a/kernel/sched/Makefile b/kernel/sched/Makefile
index b23231bae996..cab4e5c5b38e 100644
--- a/kernel/sched/Makefile
+++ b/kernel/sched/Makefile
@@ -24,13 +24,13 @@ obj-y += fair.o rt.o deadline.o
obj-$(CONFIG_SMP) += cpudeadline.o topology.o stop_task.o
obj-$(CONFIG_SCHED_AUTOGROUP) += autogroup.o
obj-$(CONFIG_SCHED_DEBUG) += debug.o
-obj-$(CONFIG_CGROUP_CPUACCT) += cpuacct.o
endif
obj-y += loadavg.o clock.o cputime.o
obj-y += idle.o
obj-y += wait.o wait_bit.o swait.o completion.o
obj-$(CONFIG_SMP) += cpupri.o pelt.o
obj-$(CONFIG_SCHEDSTATS) += stats.o
+obj-$(CONFIG_CGROUP_CPUACCT) += cpuacct.o
obj-$(CONFIG_CPU_FREQ) += cpufreq.o
obj-$(CONFIG_CPU_FREQ_GOV_SCHEDUTIL) += cpufreq_schedutil.o
obj-$(CONFIG_MEMBARRIER) += membarrier.o
diff --git a/kernel/sched/pds.c b/kernel/sched/pds.c
index 9281ad164..f09a609cf 100644
--- a/kernel/sched/pds.c
+++ b/kernel/sched/pds.c
@@ -81,6 +81,18 @@ enum {
NR_CPU_AFFINITY_CHK_LEVEL
};
+/*
+ * This allows printing both to /proc/sched_debug and
+ * to the console
+ */
+#define SEQ_printf(m, x...) \
+ do { \
+ if (m) \
+ seq_printf(m, x); \
+ else \
+ pr_cont(x); \
+ } while (0)
+
static inline void print_scheduler_version(void)
{
printk(KERN_INFO "pds: PDS-mq CPU Scheduler 0.99o by Alfred Chen.\n");
@@ -6353,7 +6365,10 @@ void ia64_set_curr_task(int cpu, struct task_struct *p)
#ifdef CONFIG_SCHED_DEBUG
void proc_sched_show_task(struct task_struct *p, struct pid_namespace *ns,
struct seq_file *m)
-{}
+{
+ SEQ_printf(m, "%s (%d, #threads: %d)\n", p->comm, task_pid_nr_ns(p, ns),
+ get_nr_threads(p));
+}
void proc_sched_set_task(struct task_struct *p)
{}

8387
linux-tkg/linux-tkg-patches/5.4/0005-v5.4_undead-pds099o.patch
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File diff suppressed because it is too large Load Diff

193
linux-tkg/linux-tkg-patches/5.4/0006-add-acs-overrides_iommu.patch
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@ -0,0 +1,193 @@
From cdeab384f48dd9c88e2dff2e9ad8d57dca1a1b1c Mon Sep 17 00:00:00 2001
From: Mark Weiman <mark.weiman@markzz.com>
Date: Sun, 12 Aug 2018 11:36:21 -0400
Subject: [PATCH] pci: Enable overrides for missing ACS capabilities
This an updated version of Alex Williamson's patch from:
https://lkml.org/lkml/2013/5/30/513
Original commit message follows:
PCIe ACS (Access Control Services) is the PCIe 2.0+ feature that
allows us to control whether transactions are allowed to be redirected
in various subnodes of a PCIe topology. For instance, if two
endpoints are below a root port or downsteam switch port, the
downstream port may optionally redirect transactions between the
devices, bypassing upstream devices. The same can happen internally
on multifunction devices. The transaction may never be visible to the
upstream devices.
One upstream device that we particularly care about is the IOMMU. If
a redirection occurs in the topology below the IOMMU, then the IOMMU
cannot provide isolation between devices. This is why the PCIe spec
encourages topologies to include ACS support. Without it, we have to
assume peer-to-peer DMA within a hierarchy can bypass IOMMU isolation.
Unfortunately, far too many topologies do not support ACS to make this
a steadfast requirement. Even the latest chipsets from Intel are only
sporadically supporting ACS. We have trouble getting interconnect
vendors to include the PCIe spec required PCIe capability, let alone
suggested features.
Therefore, we need to add some flexibility. The pcie_acs_override=
boot option lets users opt-in specific devices or sets of devices to
assume ACS support. The "downstream" option assumes full ACS support
on root ports and downstream switch ports. The "multifunction"
option assumes the subset of ACS features available on multifunction
endpoints and upstream switch ports are supported. The "id:nnnn:nnnn"
option enables ACS support on devices matching the provided vendor
and device IDs, allowing more strategic ACS overrides. These options
may be combined in any order. A maximum of 16 id specific overrides
are available. It's suggested to use the most limited set of options
necessary to avoid completely disabling ACS across the topology.
Note to hardware vendors, we have facilities to permanently quirk
specific devices which enforce isolation but not provide an ACS
capability. Please contact me to have your devices added and save
your customers the hassle of this boot option.
Signed-off-by: Mark Weiman <mark.weiman@markzz.com>
---
.../admin-guide/kernel-parameters.txt | 9 ++
drivers/pci/quirks.c | 101 ++++++++++++++++++
2 files changed, 110 insertions(+)
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index aefd358a5ca3..173b3596fd9e 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -3190,6 +3190,15 @@
nomsi [MSI] If the PCI_MSI kernel config parameter is
enabled, this kernel boot option can be used to
disable the use of MSI interrupts system-wide.
+ pcie_acs_override =
+ [PCIE] Override missing PCIe ACS support for:
+ downstream
+ All downstream ports - full ACS capabilities
+ multifunction
+ All multifunction devices - multifunction ACS subset
+ id:nnnn:nnnn
+ Specific device - full ACS capabilities
+ Specified as vid:did (vendor/device ID) in hex
noioapicquirk [APIC] Disable all boot interrupt quirks.
Safety option to keep boot IRQs enabled. This
should never be necessary.
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 4700d24e5d55..8f7a3d7fd9c1 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -3372,6 +3372,106 @@ static void quirk_no_bus_reset(struct pci_dev *dev)
dev->dev_flags |= PCI_DEV_FLAGS_NO_BUS_RESET;
}
+static bool acs_on_downstream;
+static bool acs_on_multifunction;
+
+#define NUM_ACS_IDS 16
+struct acs_on_id {
+ unsigned short vendor;
+ unsigned short device;
+};
+static struct acs_on_id acs_on_ids[NUM_ACS_IDS];
+static u8 max_acs_id;
+
+static __init int pcie_acs_override_setup(char *p)
+{
+ if (!p)
+ return -EINVAL;
+
+ while (*p) {
+ if (!strncmp(p, "downstream", 10))
+ acs_on_downstream = true;
+ if (!strncmp(p, "multifunction", 13))
+ acs_on_multifunction = true;
+ if (!strncmp(p, "id:", 3)) {
+ char opt[5];
+ int ret;
+ long val;
+
+ if (max_acs_id >= NUM_ACS_IDS - 1) {
+ pr_warn("Out of PCIe ACS override slots (%d)\n",
+ NUM_ACS_IDS);
+ goto next;
+ }
+
+ p += 3;
+ snprintf(opt, 5, "%s", p);
+ ret = kstrtol(opt, 16, &val);
+ if (ret) {
+ pr_warn("PCIe ACS ID parse error %d\n", ret);
+ goto next;
+ }
+ acs_on_ids[max_acs_id].vendor = val;
+
+ p += strcspn(p, ":");
+ if (*p != ':') {
+ pr_warn("PCIe ACS invalid ID\n");
+ goto next;
+ }
+
+ p++;
+ snprintf(opt, 5, "%s", p);
+ ret = kstrtol(opt, 16, &val);
+ if (ret) {
+ pr_warn("PCIe ACS ID parse error %d\n", ret);
+ goto next;
+ }
+ acs_on_ids[max_acs_id].device = val;
+ max_acs_id++;
+ }
+next:
+ p += strcspn(p, ",");
+ if (*p == ',')
+ p++;
+ }
+
+ if (acs_on_downstream || acs_on_multifunction || max_acs_id)
+ pr_warn("Warning: PCIe ACS overrides enabled; This may allow non-IOMMU protected peer-to-peer DMA\n");
+
+ return 0;
+}
+early_param("pcie_acs_override", pcie_acs_override_setup);
+
+static int pcie_acs_overrides(struct pci_dev *dev, u16 acs_flags)
+{
+ int i;
+
+ /* Never override ACS for legacy devices or devices with ACS caps */
+ if (!pci_is_pcie(dev) ||
+ pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ACS))
+ return -ENOTTY;
+
+ for (i = 0; i < max_acs_id; i++)
+ if (acs_on_ids[i].vendor == dev->vendor &&
+ acs_on_ids[i].device == dev->device)
+ return 1;
+
+ switch (pci_pcie_type(dev)) {
+ case PCI_EXP_TYPE_DOWNSTREAM:
+ case PCI_EXP_TYPE_ROOT_PORT:
+ if (acs_on_downstream)
+ return 1;
+ break;
+ case PCI_EXP_TYPE_ENDPOINT:
+ case PCI_EXP_TYPE_UPSTREAM:
+ case PCI_EXP_TYPE_LEG_END:
+ case PCI_EXP_TYPE_RC_END:
+ if (acs_on_multifunction && dev->multifunction)
+ return 1;
+ }
+
+ return -ENOTTY;
+}
/*
* Some Atheros AR9xxx and QCA988x chips do not behave after a bus reset.
* The device will throw a Link Down error on AER-capable systems and
@@ -4513,6 +4613,7 @@ static const struct pci_dev_acs_enabled {
{ PCI_VENDOR_ID_ZHAOXIN, 0x9083, pci_quirk_mf_endpoint_acs },
/* Zhaoxin Root/Downstream Ports */
{ PCI_VENDOR_ID_ZHAOXIN, PCI_ANY_ID, pci_quirk_zhaoxin_pcie_ports_acs },
+ { PCI_ANY_ID, PCI_ANY_ID, pcie_acs_overrides },
{ 0 }
};

419
linux-tkg/linux-tkg-patches/5.4/0007-v5.4-fsync.patch
Unescape Escape View File

@ -0,0 +1,419 @@
split the futex key setup from the queue locking and key reading. This
is useful to support the setup of multiple keys at the same time, like
what is done in futex_requeue() and what will be done for the
FUTEX_WAIT_MULTIPLE command.
Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com>
---
kernel/futex.c | 71 +++++++++++++++++++++++++++++---------------------
1 file changed, 42 insertions(+), 29 deletions(-)
diff --git a/kernel/futex.c b/kernel/futex.c
index 6d50728ef2e7..91f3db335c57 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -2631,6 +2631,39 @@ static void futex_wait_queue_me(struct futex_hash_bucket *hb, struct futex_q *q,
__set_current_state(TASK_RUNNING);
}
+static int __futex_wait_setup(u32 __user *uaddr, u32 val, unsigned int flags,
+ struct futex_q *q, struct futex_hash_bucket **hb)
+{
+
+ u32 uval;
+ int ret;
+
+retry_private:
+ *hb = queue_lock(q);
+
+ ret = get_futex_value_locked(&uval, uaddr);
+
+ if (ret) {
+ queue_unlock(*hb);
+
+ ret = get_user(uval, uaddr);
+ if (ret)
+ return ret;
+
+ if (!(flags & FLAGS_SHARED))
+ goto retry_private;
+
+ return 1;
+ }
+
+ if (uval != val) {
+ queue_unlock(*hb);
+ ret = -EWOULDBLOCK;
+ }
+
+ return ret;
+}
+
/**
* futex_wait_setup() - Prepare to wait on a futex
* @uaddr: the futex userspace address
@@ -2651,7 +2684,6 @@ static void futex_wait_queue_me(struct futex_hash_bucket *hb, struct futex_q *q,
static int futex_wait_setup(u32 __user *uaddr, u32 val, unsigned int flags,
struct futex_q *q, struct futex_hash_bucket **hb)
{
- u32 uval;
int ret;
/*
@@ -2672,38 +2704,19 @@ static int futex_wait_setup(u32 __user *uaddr, u32 val, unsigned int flags,
* absorb a wakeup if *uaddr does not match the desired values
* while the syscall executes.
*/
-retry:
- ret = get_futex_key(uaddr, flags & FLAGS_SHARED, &q->key, FUTEX_READ);
- if (unlikely(ret != 0))
- return ret;
-
-retry_private:
- *hb = queue_lock(q);
+ do {
+ ret = get_futex_key(uaddr, flags & FLAGS_SHARED,
+ &q->key, FUTEX_READ);
+ if (unlikely(ret != 0))
+ return ret;
- ret = get_futex_value_locked(&uval, uaddr);
+ ret = __futex_wait_setup(uaddr, val, flags, q, hb);
- if (ret) {
- queue_unlock(*hb);
-
- ret = get_user(uval, uaddr);
+ /* Drop key reference if retry or error. */
if (ret)
- goto out;
+ put_futex_key(&q->key);
+ } while (ret > 0);
- if (!(flags & FLAGS_SHARED))
- goto retry_private;
-
- put_futex_key(&q->key);
- goto retry;
- }
-
- if (uval != val) {
- queue_unlock(*hb);
- ret = -EWOULDBLOCK;
- }
-
-out:
- if (ret)
- put_futex_key(&q->key);
return ret;
}
--
2.20.1
This is a new futex operation, called FUTEX_WAIT_MULTIPLE, which allows
a thread to wait on several futexes at the same time, and be awoken by
any of them. In a sense, it implements one of the features that was
supported by pooling on the old FUTEX_FD interface.
My use case for this operation lies in Wine, where we want to implement
a similar interface available in Windows, used mainly for event
handling. The wine folks have an implementation that uses eventfd, but
it suffers from FD exhaustion (I was told they have application that go
to the order of multi-milion FDs), and higher CPU utilization.
In time, we are also proposing modifications to glibc and libpthread to
make this feature available for Linux native multithreaded applications
using libpthread, which can benefit from the behavior of waiting on any
of a group of futexes.
In particular, using futexes in our Wine use case reduced the CPU
utilization by 4% for the game Beat Saber and by 1.5% for the game
Shadow of Tomb Raider, both running over Proton (a wine based solution
for Windows emulation), when compared to the eventfd interface. This
implementation also doesn't rely of file descriptors, so it doesn't risk
overflowing the resource.
Technically, the existing FUTEX_WAIT implementation can be easily
reworked by using do_futex_wait_multiple with a count of one, and I
have a patch showing how it works. I'm not proposing it, since
futex is such a tricky code, that I'd be more confortable to have
FUTEX_WAIT_MULTIPLE running upstream for a couple development cycles,
before considering modifying FUTEX_WAIT.
From an implementation perspective, the futex list is passed as an array
of (pointer,value,bitset) to the kernel, which will enqueue all of them
and sleep if none was already triggered. It returns a hint of which
futex caused the wake up event to userspace, but the hint doesn't
guarantee that is the only futex triggered. Before calling the syscall
again, userspace should traverse the list, trying to re-acquire any of
the other futexes, to prevent an immediate -EWOULDBLOCK return code from
the kernel.
This was tested using three mechanisms:
1) By reimplementing FUTEX_WAIT in terms of FUTEX_WAIT_MULTIPLE and
running the unmodified tools/testing/selftests/futex and a full linux
distro on top of this kernel.
2) By an example code that exercises the FUTEX_WAIT_MULTIPLE path on a
multi-threaded, event-handling setup.
3) By running the Wine fsync implementation and executing multi-threaded
applications, in particular the modern games mentioned above, on top of
this implementation.
Signed-off-by: Zebediah Figura <z.figura12@gmail.com>
Signed-off-by: Steven Noonan <steven@valvesoftware.com>
Signed-off-by: Pierre-Loup A. Griffais <pgriffais@valvesoftware.com>
Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com>
---
include/uapi/linux/futex.h | 7 ++
kernel/futex.c | 161 ++++++++++++++++++++++++++++++++++++-
2 files changed, 164 insertions(+), 4 deletions(-)
diff --git a/include/uapi/linux/futex.h b/include/uapi/linux/futex.h
index a89eb0accd5e..2401c4cf5095 100644
--- a/include/uapi/linux/futex.h
+++ b/include/uapi/linux/futex.h
@@ -21,6 +21,7 @@
#define FUTEX_WAKE_BITSET 10
#define FUTEX_WAIT_REQUEUE_PI 11
#define FUTEX_CMP_REQUEUE_PI 12
+#define FUTEX_WAIT_MULTIPLE 31
#define FUTEX_PRIVATE_FLAG 128
#define FUTEX_CLOCK_REALTIME 256
@@ -150,4 +151,10 @@ struct robust_list_head {
(((op & 0xf) << 28) | ((cmp & 0xf) << 24) \
| ((oparg & 0xfff) << 12) | (cmparg & 0xfff))
+struct futex_wait_block {
+ __u32 __user *uaddr;
+ __u32 val;
+ __u32 bitset;
+};
+
#endif /* _UAPI_LINUX_FUTEX_H */
diff --git a/kernel/futex.c b/kernel/futex.c
index 91f3db335c57..2623e8f152cd 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -183,6 +183,7 @@ static int __read_mostly futex_cmpxchg_enabled;
#endif
#define FLAGS_CLOCKRT 0x02
#define FLAGS_HAS_TIMEOUT 0x04
+#define FLAGS_WAKE_MULTIPLE 0x08
/*
* Priority Inheritance state:
@@ -2720,6 +2721,150 @@ static int futex_wait_setup(u32 __user *uaddr, u32 val, unsigned int flags,
return ret;
}
+static int do_futex_wait_multiple(struct futex_wait_block *wb,
+ u32 count, unsigned int flags,
+ ktime_t *abs_time)
+{
+
+ struct hrtimer_sleeper timeout, *to;
+ struct futex_hash_bucket *hb;
+ struct futex_q *qs = NULL;
+ int ret;
+ int i;
+
+ qs = kcalloc(count, sizeof(struct futex_q), GFP_KERNEL);
+ if (!qs)
+ return -ENOMEM;
+
+ to = futex_setup_timer(abs_time, &timeout, flags,
+ current->timer_slack_ns);
+ retry:
+ for (i = 0; i < count; i++) {
+ qs[i].key = FUTEX_KEY_INIT;
+ qs[i].bitset = wb[i].bitset;
+
+ ret = get_futex_key(wb[i].uaddr, flags & FLAGS_SHARED,
+ &qs[i].key, FUTEX_READ);
+ if (unlikely(ret != 0)) {
+ for (--i; i >= 0; i--)
+ put_futex_key(&qs[i].key);
+ goto out;
+ }
+ }
+
+ set_current_state(TASK_INTERRUPTIBLE);
+
+ for (i = 0; i < count; i++) {
+ ret = __futex_wait_setup(wb[i].uaddr, wb[i].val,
+ flags, &qs[i], &hb);
+ if (ret) {
+ /* Drop the failed key directly. keys 0..(i-1)
+ * will be put by unqueue_me.
+ */
+ put_futex_key(&qs[i].key);
+
+ /* Undo the partial work we did. */
+ for (--i; i >= 0; i--)
+ unqueue_me(&qs[i]);
+
+ __set_current_state(TASK_RUNNING);
+ if (ret > 0)
+ goto retry;
+ goto out;
+ }
+
+ /* We can't hold to the bucket lock when dealing with
+ * the next futex. Queue ourselves now so we can unlock
+ * it before moving on.
+ */
+ queue_me(&qs[i], hb);
+ }
+
+ if (to)
+ hrtimer_start_expires(&to->timer, HRTIMER_MODE_ABS);
+
+ /* There is no easy to way to check if we are wake already on
+ * multiple futexes without waking through each one of them. So
+ * just sleep and let the scheduler handle it.
+ */
+ if (!to || to->task)
+ freezable_schedule();
+
+ __set_current_state(TASK_RUNNING);
+
+ ret = -ETIMEDOUT;
+ /* If we were woken (and unqueued), we succeeded. */
+ for (i = 0; i < count; i++)
+ if (!unqueue_me(&qs[i]))
+ ret = i;
+
+ /* Succeed wakeup */
+ if (ret >= 0)
+ goto out;
+
+ /* Woken by triggered timeout */
+ if (to && !to->task)
+ goto out;
+
+ /*
+ * We expect signal_pending(current), but we might be the
+ * victim of a spurious wakeup as well.
+ */
+ if (!signal_pending(current))
+ goto retry;
+
+ ret = -ERESTARTSYS;
+ if (!abs_time)
+ goto out;
+
+ ret = -ERESTART_RESTARTBLOCK;
+ out:
+ if (to) {
+ hrtimer_cancel(&to->timer);
+ destroy_hrtimer_on_stack(&to->timer);
+ }
+
+ kfree(qs);
+ return ret;
+}
+
+static int futex_wait_multiple(u32 __user *uaddr, unsigned int flags,
+ u32 count, ktime_t *abs_time)
+{
+ struct futex_wait_block *wb;
+ struct restart_block *restart;
+ int ret;
+
+ if (!count)
+ return -EINVAL;
+
+ wb = kcalloc(count, sizeof(struct futex_wait_block), GFP_KERNEL);
+ if (!wb)
+ return -ENOMEM;
+
+ if (copy_from_user(wb, uaddr,
+ count * sizeof(struct futex_wait_block))) {
+ ret = -EFAULT;
+ goto out;
+ }
+
+ ret = do_futex_wait_multiple(wb, count, flags, abs_time);
+
+ if (ret == -ERESTART_RESTARTBLOCK) {
+ restart = &current->restart_block;
+ restart->fn = futex_wait_restart;
+ restart->futex.uaddr = uaddr;
+ restart->futex.val = count;
+ restart->futex.time = *abs_time;
+ restart->futex.flags = (flags | FLAGS_HAS_TIMEOUT |
+ FLAGS_WAKE_MULTIPLE);
+ }
+
+out:
+ kfree(wb);
+ return ret;
+}
+
static int futex_wait(u32 __user *uaddr, unsigned int flags, u32 val,
ktime_t *abs_time, u32 bitset)
{
@@ -2797,6 +2942,10 @@ static long futex_wait_restart(struct restart_block *restart)
}
restart->fn = do_no_restart_syscall;
+ if (restart->futex.flags & FLAGS_WAKE_MULTIPLE)
+ return (long)futex_wait_multiple(uaddr, restart->futex.flags,
+ restart->futex.val, tp);
+
return (long)futex_wait(uaddr, restart->futex.flags,
restart->futex.val, tp, restart->futex.bitset);
}
@@ -3680,6 +3829,8 @@ long do_futex(u32 __user *uaddr, int op, u32 val, ktime_t *timeout,
uaddr2);
case FUTEX_CMP_REQUEUE_PI:
return futex_requeue(uaddr, flags, uaddr2, val, val2, &val3, 1);
+ case FUTEX_WAIT_MULTIPLE:
+ return futex_wait_multiple(uaddr, flags, val, timeout);
}
return -ENOSYS;
}
@@ -3696,7 +3847,8 @@ SYSCALL_DEFINE6(futex, u32 __user *, uaddr, int, op, u32, val,
if (utime && (cmd == FUTEX_WAIT || cmd == FUTEX_LOCK_PI ||
cmd == FUTEX_WAIT_BITSET ||
- cmd == FUTEX_WAIT_REQUEUE_PI)) {
+ cmd == FUTEX_WAIT_REQUEUE_PI ||
+ cmd == FUTEX_WAIT_MULTIPLE)) {
if (unlikely(should_fail_futex(!(op & FUTEX_PRIVATE_FLAG))))
return -EFAULT;
if (get_timespec64(&ts, utime))
@@ -3705,7 +3857,7 @@ SYSCALL_DEFINE6(futex, u32 __user *, uaddr, int, op, u32, val,
return -EINVAL;
t = timespec64_to_ktime(ts);
- if (cmd == FUTEX_WAIT)
+ if (cmd == FUTEX_WAIT || cmd == FUTEX_WAIT_MULTIPLE)
t = ktime_add_safe(ktime_get(), t);
tp = &t;
}
@@ -3889,14 +4041,15 @@ SYSCALL_DEFINE6(futex_time32, u32 __user *, uaddr, int, op, u32, val,
if (utime && (cmd == FUTEX_WAIT || cmd == FUTEX_LOCK_PI ||
cmd == FUTEX_WAIT_BITSET ||
- cmd == FUTEX_WAIT_REQUEUE_PI)) {
+ cmd == FUTEX_WAIT_REQUEUE_PI ||
+ cmd == FUTEX_WAIT_MULTIPLE)) {
if (get_old_timespec32(&ts, utime))
return -EFAULT;
if (!timespec64_valid(&ts))
return -EINVAL;
t = timespec64_to_ktime(ts);
- if (cmd == FUTEX_WAIT)
+ if (cmd == FUTEX_WAIT || cmd == FUTEX_WAIT_MULTIPLE)
t = ktime_add_safe(ktime_get(), t);
tp = &t;
}
--
2.20.1

7601
linux-tkg/linux-tkg-patches/5.4/0009-bmq_v5.4-r2.patch
View File

File diff suppressed because it is too large Load Diff

108
linux-tkg/linux-tkg-patches/5.4/0009-glitched-bmq.patch
Unescape Escape View File

@ -0,0 +1,108 @@
From f7f49141a5dbe9c99d78196b58c44307fb2e6be3 Mon Sep 17 00:00:00 2001
From: Tk-Glitch <ti3nou@gmail.com>
Date: Wed, 4 Jul 2018 04:30:08 +0200
Subject: glitched - BMQ
diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index 6b423eebfd5d..61e3271675d6 100644
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -21,10 +21,10 @@
#include "cpufreq_ondemand.h"
/* On-demand governor macros */
-#define DEF_FREQUENCY_UP_THRESHOLD (63)
-#define DEF_SAMPLING_DOWN_FACTOR (1)
+#define DEF_FREQUENCY_UP_THRESHOLD (55)
+#define DEF_SAMPLING_DOWN_FACTOR (5)
#define MAX_SAMPLING_DOWN_FACTOR (100000)
-#define MICRO_FREQUENCY_UP_THRESHOLD (95)
+#define MICRO_FREQUENCY_UP_THRESHOLD (63)
#define MICRO_FREQUENCY_MIN_SAMPLE_RATE (10000)
#define MIN_FREQUENCY_UP_THRESHOLD (1)
#define MAX_FREQUENCY_UP_THRESHOLD (100)
diff --git a/kernel/Kconfig.hz b/kernel/Kconfig.hz
index 2a202a846757..1d9c7ed79b11 100644
--- a/kernel/Kconfig.hz
+++ b/kernel/Kconfig.hz
@@ -4,7 +4,7 @@
choice
prompt "Timer frequency"
- default HZ_250
+ default HZ_500
help
Allows the configuration of the timer frequency. It is customary
to have the timer interrupt run at 1000 Hz but 100 Hz may be more
@@ -39,6 +39,13 @@ choice
on SMP and NUMA systems and exactly dividing by both PAL and
NTSC frame rates for video and multimedia work.
+ config HZ_500
+ bool "500 HZ"
+ help
+ 500 Hz is a balanced timer frequency. Provides fast interactivity
+ on desktops with great smoothness without increasing CPU power
+ consumption and sacrificing the battery life on laptops.
+
config HZ_1000
bool "1000 HZ"
help
@@ -52,6 +59,7 @@ config HZ
default 100 if HZ_100
default 250 if HZ_250
default 300 if HZ_300
+ default 500 if HZ_500
default 1000 if HZ_1000
config SCHED_HRTICK
diff --git a/kernel/Kconfig.hz b/kernel/Kconfig.hz
index 2a202a846757..1d9c7ed79b11 100644
--- a/kernel/Kconfig.hz
+++ b/kernel/Kconfig.hz
@@ -4,7 +4,7 @@
choice
prompt "Timer frequency"
- default HZ_500
+ default HZ_750
help
Allows the configuration of the timer frequency. It is customary
to have the timer interrupt run at 1000 Hz but 100 Hz may be more
@@ -46,6 +46,13 @@ choice
on desktops with great smoothness without increasing CPU power
consumption and sacrificing the battery life on laptops.
+ config HZ_750
+ bool "750 HZ"
+ help
+ 750 Hz is a good timer frequency for desktops. Provides fast
+ interactivity with great smoothness without sacrificing too
+ much throughput.
+
config HZ_1000
bool "1000 HZ"
help
@@ -60,6 +67,7 @@ config HZ
default 250 if HZ_250
default 300 if HZ_300
default 500 if HZ_500
+ default 750 if HZ_750
default 1000 if HZ_1000
config SCHED_HRTICK
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 9270a4370d54..30d01e647417 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -159,7 +159,7 @@ struct scan_control {
/*
* From 0 .. 100. Higher means more swappy.
*/
-int vm_swappiness = 60;
+int vm_swappiness = 20;
/*
* The total number of pages which are beyond the high watermark within all
* zones.

43
linux-tkg/linux-tkg-patches/5.4/0011-ZFS-fix.patch
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From 1e010beda2896bdf3082fb37a3e49f8ce20e04d8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Thalheim?= <joerg@thalheim.io>
Date: Thu, 2 May 2019 05:28:08 +0100
Subject: [PATCH] x86/fpu: Export kernel_fpu_{begin,end}() with
EXPORT_SYMBOL_GPL
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
We need these symbols in zfs as the fpu implementation breaks userspace:
https://github.com/zfsonlinux/zfs/issues/9346
Signed-off-by: Jörg Thalheim <joerg@thalheim.io>
---
arch/x86/kernel/fpu/core.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c
index 12c70840980e..352538b3bb5d 100644
--- a/arch/x86/kernel/fpu/core.c
+++ b/arch/x86/kernel/fpu/core.c
@@ -102,7 +102,7 @@ void kernel_fpu_begin(void)
}
__cpu_invalidate_fpregs_state();
}
-EXPORT_SYMBOL_GPL(kernel_fpu_begin);
+EXPORT_SYMBOL(kernel_fpu_begin);
void kernel_fpu_end(void)
{
@@ -111,7 +111,7 @@ void kernel_fpu_end(void)
this_cpu_write(in_kernel_fpu, false);
preempt_enable();
}
-EXPORT_SYMBOL_GPL(kernel_fpu_end);
+EXPORT_SYMBOL(kernel_fpu_end);
/*
* Save the FPU state (mark it for reload if necessary):
--
2.23.0

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linux-tkg/linux-tkg-patches/5.4/0012-linux-hardened.patch
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156
linux-tkg/linux-tkg-patches/5.7/0001-add-sysctl-to-disallow-unprivileged-CLONE_NEWUSER-by.patch
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From 5ec2dd3a095442ec1a21d86042a4994f2ba24e63 Mon Sep 17 00:00:00 2001
Message-Id: <5ec2dd3a095442ec1a21d86042a4994f2ba24e63.1512651251.git.jan.steffens@gmail.com>
From: Serge Hallyn <serge.hallyn@canonical.com>
Date: Fri, 31 May 2013 19:12:12 +0100
Subject: [PATCH] add sysctl to disallow unprivileged CLONE_NEWUSER by default
Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
[bwh: Remove unneeded binary sysctl bits]
Signed-off-by: Daniel Micay <danielmicay@gmail.com>
---
kernel/fork.c | 15 +++++++++++++++
kernel/sysctl.c | 12 ++++++++++++
kernel/user_namespace.c | 3 +++
3 files changed, 30 insertions(+)
diff --git a/kernel/fork.c b/kernel/fork.c
index 07cc743698d3668e..4011d68a8ff9305c 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -102,6 +102,11 @@
#define CREATE_TRACE_POINTS
#include <trace/events/task.h>
+#ifdef CONFIG_USER_NS
+extern int unprivileged_userns_clone;
+#else
+#define unprivileged_userns_clone 0
+#endif
/*
* Minimum number of threads to boot the kernel
@@ -1555,6 +1560,10 @@ static __latent_entropy struct task_struct *copy_process(
if ((clone_flags & (CLONE_NEWUSER|CLONE_FS)) == (CLONE_NEWUSER|CLONE_FS))
return ERR_PTR(-EINVAL);
+ if ((clone_flags & CLONE_NEWUSER) && !unprivileged_userns_clone)
+ if (!capable(CAP_SYS_ADMIN))
+ return ERR_PTR(-EPERM);
+
/*
* Thread groups must share signals as well, and detached threads
* can only be started up within the thread group.
@@ -2348,6 +2357,12 @@ SYSCALL_DEFINE1(unshare, unsigned long, unshare_flags)
if (unshare_flags & CLONE_NEWNS)
unshare_flags |= CLONE_FS;
+ if ((unshare_flags & CLONE_NEWUSER) && !unprivileged_userns_clone) {
+ err = -EPERM;
+ if (!capable(CAP_SYS_ADMIN))
+ goto bad_unshare_out;
+ }
+
err = check_unshare_flags(unshare_flags);
if (err)
goto bad_unshare_out;
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index b86520ed3fb60fbf..f7dab3760839f1a1 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -105,6 +105,9 @@ extern int core_uses_pid;
extern char core_pattern[];
extern unsigned int core_pipe_limit;
#endif
+#ifdef CONFIG_USER_NS
+extern int unprivileged_userns_clone;
+#endif
extern int pid_max;
extern int pid_max_min, pid_max_max;
extern int percpu_pagelist_fraction;
@@ -513,6 +516,15 @@ static struct ctl_table kern_table[] = {
.proc_handler = proc_dointvec,
},
#endif
+#ifdef CONFIG_USER_NS
+ {
+ .procname = "unprivileged_userns_clone",
+ .data = &unprivileged_userns_clone,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+#endif
#ifdef CONFIG_PROC_SYSCTL
{
.procname = "tainted",
diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c
index c490f1e4313b998a..dd03bd39d7bf194d 100644
--- a/kernel/user_namespace.c
+++ b/kernel/user_namespace.c
@@ -24,6 +24,9 @@
#include <linux/projid.h>
#include <linux/fs_struct.h>
+/* sysctl */
+int unprivileged_userns_clone;
+
static struct kmem_cache *user_ns_cachep __read_mostly;
static DEFINE_MUTEX(userns_state_mutex);
--
2.15.1
From b5202296055dd333db4425120d3f93ef4e6a0573 Mon Sep 17 00:00:00 2001
From: "Jan Alexander Steffens (heftig)" <jan.steffens@gmail.com>
Date: Thu, 7 Dec 2017 13:50:48 +0100
Subject: ZEN: Add CONFIG for unprivileged_userns_clone
This way our default behavior continues to match the vanilla kernel.
---
init/Kconfig | 16 ++++++++++++++++
kernel/user_namespace.c | 4 ++++
2 files changed, 20 insertions(+)
diff --git a/init/Kconfig b/init/Kconfig
index 4592bf7997c0..f3df02990aff 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1004,6 +1004,22 @@ config USER_NS
If unsure, say N.
+config USER_NS_UNPRIVILEGED
+ bool "Allow unprivileged users to create namespaces"
+ default y
+ depends on USER_NS
+ help
+ When disabled, unprivileged users will not be able to create
+ new namespaces. Allowing users to create their own namespaces
+ has been part of several recent local privilege escalation
+ exploits, so if you need user namespaces but are
+ paranoid^Wsecurity-conscious you want to disable this.
+
+ This setting can be overridden at runtime via the
+ kernel.unprivileged_userns_clone sysctl.
+
+ If unsure, say Y.
+
config PID_NS
bool "PID Namespaces"
default y
diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c
index 6b9dbc257e34..107b17f0d528 100644
--- a/kernel/user_namespace.c
+++ b/kernel/user_namespace.c
@@ -27,7 +27,11 @@
#include <linux/sort.h>
/* sysctl */
+#ifdef CONFIG_USER_NS_UNPRIVILEGED
+int unprivileged_userns_clone = 1;
+#else
int unprivileged_userns_clone;
+#endif
static struct kmem_cache *user_ns_cachep __read_mostly;
static DEFINE_MUTEX(userns_state_mutex);

354
linux-tkg/linux-tkg-patches/5.7/0002-clear-patches.patch
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From 2ac70785613ef4c6b16414986bb18bd7b60d2a13 Mon Sep 17 00:00:00 2001
From: Arjan van de Ven <arjan@linux.intel.com>
Date: Mon, 14 Mar 2016 11:10:58 -0600
Subject: [PATCH] pci pme wakeups
Reduce wakeups for PME checks, which are a workaround for miswired
boards (sadly, too many of them) in laptops.
---
drivers/pci/pci.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index c25acace7d91..0ddebdad9f5b 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -61,7 +61,7 @@ struct pci_pme_device {
struct pci_dev *dev;
};
-#define PME_TIMEOUT 1000 /* How long between PME checks */
+#define PME_TIMEOUT 4000 /* How long between PME checks */
static void pci_dev_d3_sleep(struct pci_dev *dev)
{
--
2.20.1
From 7e7e36c67aa71d6a1ec5676d99d37c1fea389ceb Mon Sep 17 00:00:00 2001
From: Arjan van de Ven <arjan@linux.intel.com>
Date: Sat, 19 Mar 2016 21:32:19 -0400
Subject: [PATCH] intel_idle: tweak cpuidle cstates
Increase target_residency in cpuidle cstate
Tune intel_idle to be a bit less agressive;
Clear linux is cleaner in hygiene (wakupes) than the average linux,
so we can afford changing these in a way that increases
performance while keeping power efficiency
---
drivers/idle/intel_idle.c | 44 +++++++++++++++++++--------------------
1 file changed, 22 insertions(+), 22 deletions(-)
diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c
index 8b5d85c91e9d..5e2d813a048d 100644
--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -466,7 +466,7 @@ static struct cpuidle_state hsw_cstates[] = {
.desc = "MWAIT 0x01",
.flags = MWAIT2flg(0x01),
.exit_latency = 10,
- .target_residency = 20,
+ .target_residency = 120,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -474,7 +474,7 @@ static struct cpuidle_state hsw_cstates[] = {
.desc = "MWAIT 0x10",
.flags = MWAIT2flg(0x10) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 33,
- .target_residency = 100,
+ .target_residency = 900,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -482,7 +482,7 @@ static struct cpuidle_state hsw_cstates[] = {
.desc = "MWAIT 0x20",
.flags = MWAIT2flg(0x20) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 133,
- .target_residency = 400,
+ .target_residency = 1000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -490,7 +490,7 @@ static struct cpuidle_state hsw_cstates[] = {
.desc = "MWAIT 0x32",
.flags = MWAIT2flg(0x32) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 166,
- .target_residency = 500,
+ .target_residency = 1500,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -498,7 +498,7 @@ static struct cpuidle_state hsw_cstates[] = {
.desc = "MWAIT 0x40",
.flags = MWAIT2flg(0x40) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 300,
- .target_residency = 900,
+ .target_residency = 2000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -506,7 +506,7 @@ static struct cpuidle_state hsw_cstates[] = {
.desc = "MWAIT 0x50",
.flags = MWAIT2flg(0x50) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 600,
- .target_residency = 1800,
+ .target_residency = 5000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -514,7 +514,7 @@ static struct cpuidle_state hsw_cstates[] = {
.desc = "MWAIT 0x60",
.flags = MWAIT2flg(0x60) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 2600,
- .target_residency = 7700,
+ .target_residency = 9000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -534,7 +534,7 @@ static struct cpuidle_state bdw_cstates[] = {
.desc = "MWAIT 0x01",
.flags = MWAIT2flg(0x01),
.exit_latency = 10,
- .target_residency = 20,
+ .target_residency = 120,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -542,7 +542,7 @@ static struct cpuidle_state bdw_cstates[] = {
.desc = "MWAIT 0x10",
.flags = MWAIT2flg(0x10) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 40,
- .target_residency = 100,
+ .target_residency = 1000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -550,7 +550,7 @@ static struct cpuidle_state bdw_cstates[] = {
.desc = "MWAIT 0x20",
.flags = MWAIT2flg(0x20) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 133,
- .target_residency = 400,
+ .target_residency = 1000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -558,7 +558,7 @@ static struct cpuidle_state bdw_cstates[] = {
.desc = "MWAIT 0x32",
.flags = MWAIT2flg(0x32) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 166,
- .target_residency = 500,
+ .target_residency = 2000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -566,7 +566,7 @@ static struct cpuidle_state bdw_cstates[] = {
.desc = "MWAIT 0x40",
.flags = MWAIT2flg(0x40) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 300,
- .target_residency = 900,
+ .target_residency = 4000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -574,7 +574,7 @@ static struct cpuidle_state bdw_cstates[] = {
.desc = "MWAIT 0x50",
.flags = MWAIT2flg(0x50) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 600,
- .target_residency = 1800,
+ .target_residency = 7000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -582,7 +582,7 @@ static struct cpuidle_state bdw_cstates[] = {
.desc = "MWAIT 0x60",
.flags = MWAIT2flg(0x60) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 2600,
- .target_residency = 7700,
+ .target_residency = 9000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -603,7 +603,7 @@ static struct cpuidle_state skl_cstates[] = {
.desc = "MWAIT 0x01",
.flags = MWAIT2flg(0x01),
.exit_latency = 10,
- .target_residency = 20,
+ .target_residency = 120,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -611,7 +611,7 @@ static struct cpuidle_state skl_cstates[] = {
.desc = "MWAIT 0x10",
.flags = MWAIT2flg(0x10) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 70,
- .target_residency = 100,
+ .target_residency = 1000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -619,7 +619,7 @@ static struct cpuidle_state skl_cstates[] = {
.desc = "MWAIT 0x20",
.flags = MWAIT2flg(0x20) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 85,
- .target_residency = 200,
+ .target_residency = 600,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -627,7 +627,7 @@ static struct cpuidle_state skl_cstates[] = {
.desc = "MWAIT 0x33",
.flags = MWAIT2flg(0x33) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 124,
- .target_residency = 800,
+ .target_residency = 3000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -635,7 +635,7 @@ static struct cpuidle_state skl_cstates[] = {
.desc = "MWAIT 0x40",
.flags = MWAIT2flg(0x40) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 200,
- .target_residency = 800,
+ .target_residency = 3200,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -643,7 +643,7 @@ static struct cpuidle_state skl_cstates[] = {
.desc = "MWAIT 0x50",
.flags = MWAIT2flg(0x50) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 480,
- .target_residency = 5000,
+ .target_residency = 9000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -651,7 +651,7 @@ static struct cpuidle_state skl_cstates[] = {
.desc = "MWAIT 0x60",
.flags = MWAIT2flg(0x60) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 890,
- .target_residency = 5000,
+ .target_residency = 9000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -672,7 +672,7 @@ static struct cpuidle_state skx_cstates[] = {
.desc = "MWAIT 0x01",
.flags = MWAIT2flg(0x01),
.exit_latency = 10,
- .target_residency = 20,
+ .target_residency = 300,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
--
2.20.1
From b8211d4f79dd88dfc2d4bd52be46103ea0b70e3e Mon Sep 17 00:00:00 2001
From: Arjan van de Ven <arjan@linux.intel.com>
Date: Fri, 6 Jan 2017 15:34:09 +0000
Subject: [PATCH] ipv4/tcp: allow the memory tuning for tcp to go a little
bigger than default
---
net/ipv4/tcp.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index cf3c5095c10e..b30d51837b2d 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -3897,8 +3897,8 @@ void __init tcp_init(void)
tcp_init_mem();
/* Set per-socket limits to no more than 1/128 the pressure threshold */
limit = nr_free_buffer_pages() << (PAGE_SHIFT - 7);
- max_wshare = min(4UL*1024*1024, limit);
- max_rshare = min(6UL*1024*1024, limit);
+ max_wshare = min(16UL*1024*1024, limit);
+ max_rshare = min(16UL*1024*1024, limit);
init_net.ipv4.sysctl_tcp_wmem[0] = SK_MEM_QUANTUM;
init_net.ipv4.sysctl_tcp_wmem[1] = 16*1024;
--
2.20.1
From 050223869257b87e22636158a80da38d877248ed Mon Sep 17 00:00:00 2001
From: Arjan van de Ven <arjan@linux.intel.com>
Date: Sun, 18 Feb 2018 23:35:41 +0000
Subject: [PATCH] locking: rwsem: spin faster
tweak rwsem owner spinning a bit
---
kernel/locking/rwsem.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/kernel/locking/rwsem.c b/kernel/locking/rwsem.c
index eef04551eae7..1ec5ab4c8ff7 100644
--- a/kernel/locking/rwsem.c
+++ b/kernel/locking/rwsem.c
@@ -720,6 +720,7 @@ rwsem_spin_on_owner(struct rw_semaphore *sem, unsigned long nonspinnable)
struct task_struct *new, *owner;
unsigned long flags, new_flags;
enum owner_state state;
+ int i = 0;
owner = rwsem_owner_flags(sem, &flags);
state = rwsem_owner_state(owner, flags, nonspinnable);
@@ -753,7 +754,8 @@ rwsem_spin_on_owner(struct rw_semaphore *sem, unsigned long nonspinnable)
break;
}
- cpu_relax();
+ if (i++ > 1000)
+ cpu_relax();
}
rcu_read_unlock();
From b836ea320114643d4354b43acb6ec8bb06ada487 Mon Sep 17 00:00:00 2001
From: Arjan van de Ven <arjan@linux.intel.com>
Date: Thu, 2 Jun 2016 23:36:32 -0500
Subject: [PATCH] drivers: Initialize ata before graphics
ATA init is the long pole in the boot process, and its asynchronous.
move the graphics init after it so that ata and graphics initialize
in parallel
---
drivers/Makefile | 15 ++++++++-------
1 file changed, 8 insertions(+), 7 deletions(-)
diff --git a/drivers/Makefile b/drivers/Makefile
index aaef17cc6512..d08f3a394929 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -58,15 +58,8 @@ obj-y += char/
# iommu/ comes before gpu as gpu are using iommu controllers
obj-y += iommu/
-# gpu/ comes after char for AGP vs DRM startup and after iommu
-obj-y += gpu/
-
obj-$(CONFIG_CONNECTOR) += connector/
-# i810fb and intelfb depend on char/agp/
-obj-$(CONFIG_FB_I810) += video/fbdev/i810/
-obj-$(CONFIG_FB_INTEL) += video/fbdev/intelfb/
-
obj-$(CONFIG_PARPORT) += parport/
obj-$(CONFIG_NVM) += lightnvm/
obj-y += base/ block/ misc/ mfd/ nfc/
@@ -79,6 +72,14 @@ obj-$(CONFIG_IDE) += ide/
obj-y += scsi/
obj-y += nvme/
obj-$(CONFIG_ATA) += ata/
+
+# gpu/ comes after char for AGP vs DRM startup and after iommu
+obj-y += gpu/
+
+# i810fb and intelfb depend on char/agp/
+obj-$(CONFIG_FB_I810) += video/fbdev/i810/
+obj-$(CONFIG_FB_INTEL) += video/fbdev/intelfb/
+
obj-$(CONFIG_TARGET_CORE) += target/
obj-$(CONFIG_MTD) += mtd/
obj-$(CONFIG_SPI) += spi/

545
linux-tkg/linux-tkg-patches/5.7/0003-glitched-base.patch
Unescape Escape View File

@ -0,0 +1,545 @@
From f7f49141a5dbe9c99d78196b58c44307fb2e6be3 Mon Sep 17 00:00:00 2001
From: Tk-Glitch <ti3nou@gmail.com>
Date: Wed, 4 Jul 2018 04:30:08 +0200
Subject: glitched
diff --git a/scripts/mkcompile_h b/scripts/mkcompile_h
index 87f1fc9..b3be470 100755
--- a/scripts/mkcompile_h
+++ b/scripts/mkcompile_h
@@ -50,8 +50,8 @@ else
fi
UTS_VERSION="#$VERSION"
-CONFIG_FLAGS=""
-if [ -n "$SMP" ] ; then CONFIG_FLAGS="SMP"; fi
+CONFIG_FLAGS="TKG"
+if [ -n "$SMP" ] ; then CONFIG_FLAGS="$CONFIG_FLAGS SMP"; fi
if [ -n "$PREEMPT" ] ; then CONFIG_FLAGS="$CONFIG_FLAGS PREEMPT"; fi
UTS_VERSION="$UTS_VERSION $CONFIG_FLAGS $TIMESTAMP"
diff --git a/fs/dcache.c b/fs/dcache.c
index 2acfc69878f5..3f1131431e06 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -69,7 +69,7 @@
* If no ancestor relationship:
* arbitrary, since it's serialized on rename_lock
*/
-int sysctl_vfs_cache_pressure __read_mostly = 100;
+int sysctl_vfs_cache_pressure __read_mostly = 50;
EXPORT_SYMBOL_GPL(sysctl_vfs_cache_pressure);
__cacheline_aligned_in_smp DEFINE_SEQLOCK(rename_lock);
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 211890edf37e..37121563407d 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -41,7 +41,7 @@ const_debug unsigned int sysctl_sched_features =
* Number of tasks to iterate in a single balance run.
* Limited because this is done with IRQs disabled.
*/
-const_debug unsigned int sysctl_sched_nr_migrate = 32;
+const_debug unsigned int sysctl_sched_nr_migrate = 128;
/*
* period over which we average the RT time consumption, measured
@@ -61,9 +61,9 @@ __read_mostly int scheduler_running;
/*
* part of the period that we allow rt tasks to run in us.
- * default: 0.95s
+ * XanMod default: 0.98s
*/
-int sysctl_sched_rt_runtime = 950000;
+int sysctl_sched_rt_runtime = 980000;
/*
* __task_rq_lock - lock the rq @p resides on.
diff --git a/scripts/setlocalversion b/scripts/setlocalversion
index 71f39410691b..288f9679e883 100755
--- a/scripts/setlocalversion
+++ b/scripts/setlocalversion
@@ -54,7 +54,7 @@ scm_version()
# If only the short version is requested, don't bother
# running further git commands
if $short; then
- echo "+"
+ # echo "+"
return
fi
# If we are past a tagged commit (like
From f85ed068b4d0e6c31edce8574a95757a60e58b87 Mon Sep 17 00:00:00 2001
From: Etienne Juvigny <Ti3noU@gmail.com>
Date: Mon, 3 Sep 2018 17:36:25 +0200
Subject: Zenify & stuff
diff --git a/init/Kconfig b/init/Kconfig
index b4daad2bac23..c1e59dc04209 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1244,7 +1244,6 @@ config CC_OPTIMIZE_FOR_PERFORMANCE
config CC_OPTIMIZE_FOR_PERFORMANCE_O3
bool "Optimize more for performance (-O3)"
- depends on ARC
help
Choosing this option will pass "-O3" to your compiler to optimize
the kernel yet more for performance.
diff --git a/drivers/infiniband/core/addr.c b/drivers/infiniband/core/addr.c
index 4f32c4062fb6..c0bf039e1b40 100644
--- a/drivers/infiniband/core/addr.c
+++ b/drivers/infiniband/core/addr.c
@@ -721,6 +721,7 @@ int rdma_addr_find_l2_eth_by_grh(const union ib_gid *sgid,
struct sockaddr _sockaddr;
struct sockaddr_in _sockaddr_in;
struct sockaddr_in6 _sockaddr_in6;
+ struct sockaddr_ib _sockaddr_ib;
} sgid_addr, dgid_addr;
int ret;
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 79226ca8f80f..2a30060e7e1d 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -47,7 +47,11 @@ struct blk_queue_stats;
struct blk_stat_callback;
#define BLKDEV_MIN_RQ 4
+#ifdef CONFIG_ZENIFY
+#define BLKDEV_MAX_RQ 512
+#else
#define BLKDEV_MAX_RQ 128 /* Default maximum */
+#endif
/* Must be consistent with blk_mq_poll_stats_bkt() */
#define BLK_MQ_POLL_STATS_BKTS 16
diff --git a/init/Kconfig b/init/Kconfig
index 041f3a022122..5ed70eb1ad3a 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -45,6 +45,38 @@ config THREAD_INFO_IN_TASK
menu "General setup"
+config ZENIFY
+ bool "A selection of patches from Zen/Liquorix kernel and additional tweaks for a better gaming experience"
+ default y
+ help
+ Tunes the kernel for responsiveness at the cost of throughput and power usage.
+
+ --- Virtual Memory Subsystem ---------------------------
+
+ Mem dirty before bg writeback..: 10 % -> 20 %
+ Mem dirty before sync writeback: 20 % -> 50 %
+
+ --- Block Layer ----------------------------------------
+
+ Queue depth...............: 128 -> 512
+ Default MQ scheduler......: mq-deadline -> bfq
+
+ --- CFS CPU Scheduler ----------------------------------
+
+ Scheduling latency.............: 6 -> 3 ms
+ Minimal granularity............: 0.75 -> 0.3 ms
+ Wakeup granularity.............: 1 -> 0.5 ms
+ CPU migration cost.............: 0.5 -> 0.25 ms
+ Bandwidth slice size...........: 5 -> 3 ms
+ Ondemand fine upscaling limit..: 95 % -> 85 %
+
+ --- MuQSS CPU Scheduler --------------------------------
+
+ Scheduling interval............: 6 -> 3 ms
+ ISO task max realtime use......: 70 % -> 25 %
+ Ondemand coarse upscaling limit: 80 % -> 45 %
+ Ondemand fine upscaling limit..: 95 % -> 45 %
+
config BROKEN
bool
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 2f0a0be4d344..bada807c7e59 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -37,8 +37,13 @@
*
* (default: 6ms * (1 + ilog(ncpus)), units: nanoseconds)
*/
+#ifdef CONFIG_ZENIFY
+unsigned int sysctl_sched_latency = 3000000ULL;
+static unsigned int normalized_sysctl_sched_latency = 3000000ULL;
+#else
unsigned int sysctl_sched_latency = 6000000ULL;
static unsigned int normalized_sysctl_sched_latency = 6000000ULL;
+#endif
/*
* The initial- and re-scaling of tunables is configurable
@@ -58,13 +63,22 @@ enum sched_tunable_scaling sysctl_sched_tunable_scaling = SCHED_TUNABLESCALING_L
*
* (default: 0.75 msec * (1 + ilog(ncpus)), units: nanoseconds)
*/
+#ifdef CONFIG_ZENIFY
+unsigned int sysctl_sched_min_granularity = 300000ULL;
+static unsigned int normalized_sysctl_sched_min_granularity = 300000ULL;
+#else
unsigned int sysctl_sched_min_granularity = 750000ULL;
static unsigned int normalized_sysctl_sched_min_granularity = 750000ULL;
+#endif
/*
* This value is kept at sysctl_sched_latency/sysctl_sched_min_granularity
*/
+#ifdef CONFIG_ZENIFY
+static unsigned int sched_nr_latency = 10;
+#else
static unsigned int sched_nr_latency = 8;
+#endif
/*
* After fork, child runs first. If set to 0 (default) then
@@ -81,10 +95,17 @@ unsigned int sysctl_sched_child_runs_first __read_mostly;
*
* (default: 1 msec * (1 + ilog(ncpus)), units: nanoseconds)
*/
+#ifdef CONFIG_ZENIFY
+unsigned int sysctl_sched_wakeup_granularity = 500000UL;
+static unsigned int normalized_sysctl_sched_wakeup_granularity = 500000UL;
+
+const_debug unsigned int sysctl_sched_migration_cost = 50000UL;
+#else
unsigned int sysctl_sched_wakeup_granularity = 1000000UL;
static unsigned int normalized_sysctl_sched_wakeup_granularity = 1000000UL;
const_debug unsigned int sysctl_sched_migration_cost = 500000UL;
+#endif
#ifdef CONFIG_SMP
/*
@@ -107,8 +128,12 @@ int __weak arch_asym_cpu_priority(int cpu)
*
* (default: 5 msec, units: microseconds)
*/
+#ifdef CONFIG_ZENIFY
+unsigned int sysctl_sched_cfs_bandwidth_slice = 3000UL;
+#else
unsigned int sysctl_sched_cfs_bandwidth_slice = 5000UL;
#endif
+#endif
/*
* The margin used when comparing utilization with CPU capacity:
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 337c6afb3345..9315e358f292 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -71,7 +71,11 @@ static long ratelimit_pages = 32;
/*
* Start background writeback (via writeback threads) at this percentage
*/
+#ifdef CONFIG_ZENIFY
+int dirty_background_ratio = 20;
+#else
int dirty_background_ratio = 10;
+#endif
/*
* dirty_background_bytes starts at 0 (disabled) so that it is a function of
@@ -88,7 +92,11 @@ int vm_highmem_is_dirtyable;
/*
* The generator of dirty data starts writeback at this percentage
*/
+#ifdef CONFIG_ZENIFY
+int vm_dirty_ratio = 50;
+#else
int vm_dirty_ratio = 20;
+#endif
/*
* vm_dirty_bytes starts at 0 (disabled) so that it is a function of
diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig
index 80dad301361d..42b7fa7d01f8 100644
--- a/net/ipv4/Kconfig
+++ b/net/ipv4/Kconfig
@@ -702,6 +702,9 @@ choice
config DEFAULT_VEGAS
bool "Vegas" if TCP_CONG_VEGAS=y
+ config DEFAULT_YEAH
+ bool "YeAH" if TCP_CONG_YEAH=y
+
config DEFAULT_VENO
bool "Veno" if TCP_CONG_VENO=y
@@ -735,6 +738,7 @@ config DEFAULT_TCP_CONG
default "htcp" if DEFAULT_HTCP
default "hybla" if DEFAULT_HYBLA
default "vegas" if DEFAULT_VEGAS
+ default "yeah" if DEFAULT_YEAH
default "westwood" if DEFAULT_WESTWOOD
default "veno" if DEFAULT_VENO
default "reno" if DEFAULT_RENO
From: Nick Desaulniers <ndesaulniers@google.com>
Date: Mon, 24 Dec 2018 13:37:41 +0200
Subject: include/linux/compiler*.h: define asm_volatile_goto
asm_volatile_goto should also be defined for other compilers that
support asm goto.
Fixes commit 815f0dd ("include/linux/compiler*.h: make compiler-*.h
mutually exclusive").
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h
index ba814f1..e77eeb0 100644
--- a/include/linux/compiler_types.h
+++ b/include/linux/compiler_types.h
@@ -188,6 +188,10 @@ struct ftrace_likely_data {
#define asm_volatile_goto(x...) asm goto(x)
#endif
+#ifndef asm_volatile_goto
+#define asm_volatile_goto(x...) asm goto(x)
+#endif
+
/* Are two types/vars the same type (ignoring qualifiers)? */
#define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b))
From: Andy Lavr <andy.lavr@gmail.com>
Date: Mon, 24 Dec 2018 14:57:47 +0200
Subject: avl: Use [defer+madvise] as default khugepaged defrag strategy
For some reason, the default strategy to respond to THP fault fallbacks
is still just madvise, meaning stall if the program wants transparent
hugepages, but don't trigger a background reclaim / compaction if THP
begins to fail allocations. This creates a snowball affect where we
still use the THP code paths, but we almost always fail once a system
has been active and busy for a while.
The option "defer" was created for interactive systems where THP can
still improve performance. If we have to fallback to a regular page due
to an allocation failure or anything else, we will trigger a background
reclaim and compaction so future THP attempts succeed and previous
attempts eventually have their smaller pages combined without stalling
running applications.
We still want madvise to stall applications that explicitely want THP,
so defer+madvise _does_ make a ton of sense. Make it the default for
interactive systems, especially if the kernel maintainer left
transparent hugepages on "always".
Reasoning and details in the original patch:
https://lwn.net/Articles/711248/
Signed-off-by: Andy Lavr <andy.lavr@gmail.com>
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index e84a10b..21d62b7 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -53,7 +53,11 @@ unsigned long transparent_hugepage_flags __read_mostly =
#ifdef CONFIG_TRANSPARENT_HUGEPAGE_MADVISE
(1<<TRANSPARENT_HUGEPAGE_REQ_MADV_FLAG)|
#endif
+#ifdef CONFIG_AVL_INTERACTIVE
+ (1<<TRANSPARENT_HUGEPAGE_DEFRAG_KSWAPD_OR_MADV_FLAG)|
+#else
(1<<TRANSPARENT_HUGEPAGE_DEFRAG_REQ_MADV_FLAG)|
+#endif
(1<<TRANSPARENT_HUGEPAGE_DEFRAG_KHUGEPAGED_FLAG)|
(1<<TRANSPARENT_HUGEPAGE_USE_ZERO_PAGE_FLAG);
diff --git a/net/sched/Kconfig b/net/sched/Kconfig
--- a/net/sched/Kconfig
+++ b/net/sched/Kconfig
@@ -429,6 +429,9 @@
Select the queueing discipline that will be used by default
for all network devices.
+ config DEFAULT_CAKE
+ bool "Common Applications Kept Enhanced" if NET_SCH_CAKE
+
config DEFAULT_FQ
bool "Fair Queue" if NET_SCH_FQ
@@ -448,6 +451,7 @@
config DEFAULT_NET_SCH
string
default "pfifo_fast" if DEFAULT_PFIFO_FAST
+ default "cake" if DEFAULT_CAKE
default "fq" if DEFAULT_FQ
default "fq_codel" if DEFAULT_FQ_CODEL
default "sfq" if DEFAULT_SFQ
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index a29043ea9..3fb219747 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -263,7 +263,7 @@ compound_page_dtor * const compound_page_dtors[] = {
#else
int watermark_boost_factor __read_mostly = 15000;
#endif
-int watermark_scale_factor = 10;
+int watermark_scale_factor = 200;
static unsigned long nr_kernel_pages __initdata;
static unsigned long nr_all_pages __initdata;
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 80bb6408f..6c8b55cd1 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -146,8 +146,7 @@ extern int mmap_rnd_compat_bits __read_mostly;
* not a hard limit any more. Although some userspace tools can be surprised by
* that.
*/
-#define MAPCOUNT_ELF_CORE_MARGIN (5)
-#define DEFAULT_MAX_MAP_COUNT (USHRT_MAX - MAPCOUNT_ELF_CORE_MARGIN)
+#define DEFAULT_MAX_MAP_COUNT (524288)
extern int sysctl_max_map_count;
From adb1f9df27f08e6488bcd80b1607987c6114a77a Mon Sep 17 00:00:00 2001
From: Alexandre Frade <admfrade@gmail.com>
Date: Mon, 25 Nov 2019 15:13:06 -0300
Subject: [PATCH] elevator: set default scheduler to bfq for blk-mq
Signed-off-by: Alexandre Frade <admfrade@gmail.com>
---
block/elevator.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/block/elevator.c b/block/elevator.c
index 076ba7308e65..81f89095aa77 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -623,15 +623,15 @@ static inline bool elv_support_iosched(struct request_queue *q)
}
/*
- * For single queue devices, default to using mq-deadline. If we have multiple
- * queues or mq-deadline is not available, default to "none".
+ * For single queue devices, default to using bfq. If we have multiple
+ * queues or bfq is not available, default to "none".
*/
static struct elevator_type *elevator_get_default(struct request_queue *q)
{
if (q->nr_hw_queues != 1)
return NULL;
- return elevator_get(q, "mq-deadline", false);
+ return elevator_get(q, "bfq", false);
}
/*
From c3ec05777c46e19a8a26d0fc4ca0c0db8a19de97 Mon Sep 17 00:00:00 2001
From: Alexandre Frade <admfrade@gmail.com>
Date: Fri, 10 May 2019 16:45:59 -0300
Subject: [PATCH] block: set rq_affinity = 2 for full multithreading I/O
requests
Signed-off-by: Alexandre Frade <admfrade@gmail.com>
---
include/linux/blkdev.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index f3ea78b0c91c..4dbacc6b073b 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -621,7 +621,8 @@ struct request_queue {
#define QUEUE_FLAG_RQ_ALLOC_TIME 27 /* record rq->alloc_time_ns */
#define QUEUE_FLAG_MQ_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \
- (1 << QUEUE_FLAG_SAME_COMP))
+ (1 << QUEUE_FLAG_SAME_COMP) | \
+ (1 << QUEUE_FLAG_SAME_FORCE))
void blk_queue_flag_set(unsigned int flag, struct request_queue *q);
void blk_queue_flag_clear(unsigned int flag, struct request_queue *q);
From 8171d33d0b84a953649863538fdbe4c26c035e4f Mon Sep 17 00:00:00 2001
From: Alexandre Frade <admfrade@gmail.com>
Date: Fri, 10 May 2019 14:32:50 -0300
Subject: [PATCH] mm: set 2 megabytes for address_space-level file read-ahead
pages size
Signed-off-by: Alexandre Frade <admfrade@gmail.com>
---
include/linux/mm.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index a2adf95b3f9c..e804d9f7583a 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2416,7 +2416,7 @@ int __must_check write_one_page(struct page *page);
void task_dirty_inc(struct task_struct *tsk);
/* readahead.c */
-#define VM_READAHEAD_PAGES (SZ_128K / PAGE_SIZE)
+#define VM_READAHEAD_PAGES (SZ_2M / PAGE_SIZE)
int force_page_cache_readahead(struct address_space *mapping, struct file *filp,
pgoff_t offset, unsigned long nr_to_read);
From de7119e3db9fdb4c704355854a02a7e9fad931d4 Mon Sep 17 00:00:00 2001
From: Steven Barrett <steven@liquorix.net>
Date: Wed, 15 Jan 2020 20:43:56 -0600
Subject: [PATCH] ZEN: intel-pstate: Implement "enable" parameter
If intel-pstate is compiled into the kernel, it will preempt the loading
of acpi-cpufreq so you can take advantage of hardware p-states without
any friction.
However, intel-pstate is not completely superior to cpufreq's ondemand
for one reason. There's no concept of an up_threshold property.
In ondemand, up_threshold essentially reduces the maximum utilization to
compare against, allowing you to hit max frequencies and turbo boost
from a much lower core utilization.
With intel-pstate, you have the concept of minimum and maximum
performance, but no tunable that lets you define, maximum frequency
means 50% core utilization. For just this oversight, there's reasons
you may want ondemand.
Lets support setting "enable" in kernel boot parameters. This lets
kernel maintainers include "intel_pstate=disable" statically in the
static boot parameters, but let users of the kernel override this
selection.
---
Documentation/admin-guide/kernel-parameters.txt | 3 +++
drivers/cpufreq/intel_pstate.c | 2 ++
2 files changed, 5 insertions(+)
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index ade4e6ec23e03..0b613370d28d8 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -1765,6 +1765,9 @@
disable
Do not enable intel_pstate as the default
scaling driver for the supported processors
+ enable
+ Enable intel_pstate in-case "disable" was passed
+ previously in the kernel boot parameters
passive
Use intel_pstate as a scaling driver, but configure it
to work with generic cpufreq governors (instead of
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index d2fa3e9ccd97c..bd10cb02fc0ff 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -2826,6 +2826,8 @@ static int __init intel_pstate_setup(char *str)
pr_info("HWP disabled\n");
no_hwp = 1;
}
+ if (!strcmp(str, "enable"))
+ no_load = 0;
if (!strcmp(str, "force"))
force_load = 1;
if (!strcmp(str, "hwp_only"))

72
linux-tkg/linux-tkg-patches/5.7/0003-glitched-cfs.patch
Unescape Escape View File

@ -0,0 +1,72 @@
diff --git a/kernel/Kconfig.hz b/kernel/Kconfig.hz
index 2a202a846757..1d9c7ed79b11 100644
--- a/kernel/Kconfig.hz
+++ b/kernel/Kconfig.hz
@@ -4,7 +4,7 @@
choice
prompt "Timer frequency"
- default HZ_250
+ default HZ_500
help
Allows the configuration of the timer frequency. It is customary
to have the timer interrupt run at 1000 Hz but 100 Hz may be more
@@ -39,6 +39,13 @@ choice
on SMP and NUMA systems and exactly dividing by both PAL and
NTSC frame rates for video and multimedia work.
+ config HZ_500
+ bool "500 HZ"
+ help
+ 500 Hz is a balanced timer frequency. Provides fast interactivity
+ on desktops with great smoothness without increasing CPU power
+ consumption and sacrificing the battery life on laptops.
+
config HZ_1000
bool "1000 HZ"
help
@@ -52,6 +59,7 @@ config HZ
default 100 if HZ_100
default 250 if HZ_250
default 300 if HZ_300
+ default 500 if HZ_500
default 1000 if HZ_1000
config SCHED_HRTICK
diff --git a/kernel/Kconfig.hz b/kernel/Kconfig.hz
index 2a202a846757..1d9c7ed79b11 100644
--- a/kernel/Kconfig.hz
+++ b/kernel/Kconfig.hz
@@ -4,7 +4,7 @@
choice
prompt "Timer frequency"
- default HZ_500
+ default HZ_750
help
Allows the configuration of the timer frequency. It is customary
to have the timer interrupt run at 1000 Hz but 100 Hz may be more
@@ -46,6 +46,13 @@ choice
on desktops with great smoothness without increasing CPU power
consumption and sacrificing the battery life on laptops.
+ config HZ_750
+ bool "750 HZ"
+ help
+ 750 Hz is a good timer frequency for desktops. Provides fast
+ interactivity with great smoothness without sacrificing too
+ much throughput.
+
config HZ_1000
bool "1000 HZ"
help
@@ -60,6 +67,7 @@ config HZ
default 250 if HZ_250
default 300 if HZ_300
default 500 if HZ_500
+ default 750 if HZ_750
default 1000 if HZ_1000
config SCHED_HRTICK

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From f7f49141a5dbe9c99d78196b58c44307fb2e6be3 Mon Sep 17 00:00:00 2001
From: Tk-Glitch <ti3nou@gmail.com>
Date: Wed, 4 Jul 2018 04:30:08 +0200
Subject: glitched - MuQSS
diff --git a/kernel/sched/MuQSS.c b/kernel/sched/MuQSS.c
index 84a1d08d68551..57c3036a68952 100644
--- a/kernel/sched/MuQSS.c
+++ b/kernel/sched/MuQSS.c
@@ -163,7 +167,11 @@ int sched_interactive __read_mostly = 1;
* are allowed to run five seconds as real time tasks. This is the total over
* all online cpus.
*/
+#ifdef CONFIG_ZENIFY
+int sched_iso_cpu __read_mostly = 25;
+#else
int sched_iso_cpu __read_mostly = 70;
+#endif
/*
* sched_yield_type - Choose what sort of yield sched_yield will perform.
diff --git a/kernel/Kconfig.hz b/kernel/Kconfig.hz
index 2a202a846757..1d9c7ed79b11 100644
--- a/kernel/Kconfig.hz
+++ b/kernel/Kconfig.hz
@@ -5,7 +5,7 @@
choice
prompt "Timer frequency"
default HZ_100 if SCHED_MUQSS
- default HZ_250_NODEF if !SCHED_MUQSS
+ default HZ_500_NODEF if !SCHED_MUQSS
help
Allows the configuration of the timer frequency. It is customary
to have the timer interrupt run at 1000 Hz but 100 Hz may be more
@@ -50,6 +50,20 @@ choice
on SMP and NUMA systems and exactly dividing by both PAL and
NTSC frame rates for video and multimedia work.
+ config HZ_500_NODEF
+ bool "500 HZ"
+ help
+ 500 Hz is a good timer frequency for desktops. Provides fast
+ interactivity with great smoothness without sacrificing too
+ much throughput.
+
+ config HZ_750_NODEF
+ bool "750 HZ"
+ help
+ 750 Hz is a good timer frequency for desktops. Provides fast
+ interactivity with great smoothness without sacrificing too
+ much throughput.
+
config HZ_1000_NODEF
bool "1000 HZ"
help
@@ -63,6 +70,8 @@ config HZ
default 100 if HZ_100
default 250 if HZ_250_NODEF
default 300 if HZ_300_NODEF
+ default 500 if HZ_500_NODEF
+ default 750 if HZ_750_NODEF
default 1000 if HZ_1000_NODEF
config SCHED_HRTICK
diff --git a/Makefile b/Makefile
index d4d36c61940b..4a9dfe471f1f 100644
--- a/Makefile
+++ b/Makefile
@@ -15,7 +15,6 @@ NAME = Kleptomaniac Octopus
CKVERSION = -ck1
CKNAME = MuQSS Powered
-EXTRAVERSION := $(EXTRAVERSION)$(CKVERSION)
# We are using a recursive build, so we need to do a little thinking
# to get the ordering right.

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diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index 6b423eebfd5d..61e3271675d6 100644
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -21,10 +21,10 @@
#include "cpufreq_ondemand.h"
/* On-demand governor macros */
-#define DEF_FREQUENCY_UP_THRESHOLD (80)
-#define DEF_SAMPLING_DOWN_FACTOR (1)
+#define DEF_FREQUENCY_UP_THRESHOLD (45)
+#define DEF_SAMPLING_DOWN_FACTOR (5)
#define MAX_SAMPLING_DOWN_FACTOR (100000)
-#define MICRO_FREQUENCY_UP_THRESHOLD (95)
+#define MICRO_FREQUENCY_UP_THRESHOLD (45)
#define MICRO_FREQUENCY_MIN_SAMPLE_RATE (10000)
#define MIN_FREQUENCY_UP_THRESHOLD (1)
#define MAX_FREQUENCY_UP_THRESHOLD (100)

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diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index 6b423eebfd5d..61e3271675d6 100644
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -21,10 +21,10 @@
#include "cpufreq_ondemand.h"
/* On-demand governor macros */
-#define DEF_FREQUENCY_UP_THRESHOLD (63)
-#define DEF_SAMPLING_DOWN_FACTOR (1)
+#define DEF_FREQUENCY_UP_THRESHOLD (55)
+#define DEF_SAMPLING_DOWN_FACTOR (5)
#define MAX_SAMPLING_DOWN_FACTOR (100000)
-#define MICRO_FREQUENCY_UP_THRESHOLD (95)
+#define MICRO_FREQUENCY_UP_THRESHOLD (63)
#define MICRO_FREQUENCY_MIN_SAMPLE_RATE (10000)
#define MIN_FREQUENCY_UP_THRESHOLD (1)
#define MAX_FREQUENCY_UP_THRESHOLD (100)

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From f7f49141a5dbe9c99d78196b58c44307fb2e6be3 Mon Sep 17 00:00:00 2001
From: Tk-Glitch <ti3nou@gmail.com>
Date: Wed, 4 Jul 2018 04:30:08 +0200
Subject: glitched - PDS
diff --git a/kernel/Kconfig.hz b/kernel/Kconfig.hz
index 2a202a846757..1d9c7ed79b11 100644
--- a/kernel/Kconfig.hz
+++ b/kernel/Kconfig.hz
@@ -4,7 +4,7 @@
choice
prompt "Timer frequency"
- default HZ_250
+ default HZ_500
help
Allows the configuration of the timer frequency. It is customary
to have the timer interrupt run at 1000 Hz but 100 Hz may be more
@@ -39,6 +39,13 @@ choice
on SMP and NUMA systems and exactly dividing by both PAL and
NTSC frame rates for video and multimedia work.
+ config HZ_500
+ bool "500 HZ"
+ help
+ 500 Hz is a balanced timer frequency. Provides fast interactivity
+ on desktops with great smoothness without increasing CPU power
+ consumption and sacrificing the battery life on laptops.
+
config HZ_1000
bool "1000 HZ"
help
@@ -52,6 +59,7 @@ config HZ
default 100 if HZ_100
default 250 if HZ_250
default 300 if HZ_300
+ default 500 if HZ_500
default 1000 if HZ_1000
config SCHED_HRTICK
diff --git a/kernel/Kconfig.hz b/kernel/Kconfig.hz
index 2a202a846757..1d9c7ed79b11 100644
--- a/kernel/Kconfig.hz
+++ b/kernel/Kconfig.hz
@@ -4,7 +4,7 @@
choice
prompt "Timer frequency"
- default HZ_500
+ default HZ_750
help
Allows the configuration of the timer frequency. It is customary
to have the timer interrupt run at 1000 Hz but 100 Hz may be more
@@ -46,6 +46,13 @@ choice
on desktops with great smoothness without increasing CPU power
consumption and sacrificing the battery life on laptops.
+ config HZ_750
+ bool "750 HZ"
+ help
+ 750 Hz is a good timer frequency for desktops. Provides fast
+ interactivity with great smoothness without sacrificing too
+ much throughput.
+
config HZ_1000
bool "1000 HZ"
help
@@ -60,6 +67,7 @@ config HZ
default 250 if HZ_250
default 300 if HZ_300
default 500 if HZ_500
+ default 750 if HZ_750
default 1000 if HZ_1000
config SCHED_HRTICK
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 9270a4370d54..30d01e647417 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -159,7 +159,7 @@ struct scan_control {
/*
* From 0 .. 100. Higher means more swappy.
*/
-int vm_swappiness = 60;
+int vm_swappiness = 20;
/*
* The total number of pages which are beyond the high watermark within all
* zones.
diff --git a/init/Kconfig b/init/Kconfig
index 11fd9b502d06..e9bc34d3019b 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -715,6 +715,7 @@ menu "Scheduler features"
config UCLAMP_TASK
bool "Enable utilization clamping for RT/FAIR tasks"
depends on CPU_FREQ_GOV_SCHEDUTIL
+ depends on !SCHED_PDS
help
This feature enables the scheduler to track the clamped utilization
of each CPU based on RUNNABLE tasks scheduled on that CPU.
@@ -948,7 +948,6 @@ config CGROUP_DEVICE
config CGROUP_CPUACCT
bool "Simple CPU accounting controller"
- depends on !SCHED_PDS
help
Provides a simple controller for monitoring the
total CPU consumed by the tasks in a cgroup.
diff --git a/kernel/sched/Makefile b/kernel/sched/Makefile
index b23231bae996..cab4e5c5b38e 100644
--- a/kernel/sched/Makefile
+++ b/kernel/sched/Makefile
@@ -24,13 +24,13 @@ obj-y += fair.o rt.o deadline.o
obj-$(CONFIG_SMP) += cpudeadline.o topology.o stop_task.o
obj-$(CONFIG_SCHED_AUTOGROUP) += autogroup.o
obj-$(CONFIG_SCHED_DEBUG) += debug.o
-obj-$(CONFIG_CGROUP_CPUACCT) += cpuacct.o
endif
obj-y += loadavg.o clock.o cputime.o
obj-y += idle.o
obj-y += wait.o wait_bit.o swait.o completion.o
obj-$(CONFIG_SMP) += cpupri.o pelt.o
obj-$(CONFIG_SCHEDSTATS) += stats.o
+obj-$(CONFIG_CGROUP_CPUACCT) += cpuacct.o
obj-$(CONFIG_CPU_FREQ) += cpufreq.o
obj-$(CONFIG_CPU_FREQ_GOV_SCHEDUTIL) += cpufreq_schedutil.o
obj-$(CONFIG_MEMBARRIER) += membarrier.o
diff --git a/kernel/sched/pds.c b/kernel/sched/pds.c
index 9281ad164..f09a609cf 100644
--- a/kernel/sched/pds.c
+++ b/kernel/sched/pds.c
@@ -81,6 +81,18 @@ enum {
NR_CPU_AFFINITY_CHK_LEVEL
};
+/*
+ * This allows printing both to /proc/sched_debug and
+ * to the console
+ */
+#define SEQ_printf(m, x...) \
+ do { \
+ if (m) \
+ seq_printf(m, x); \
+ else \
+ pr_cont(x); \
+ } while (0)
+
static inline void print_scheduler_version(void)
{
printk(KERN_INFO "pds: PDS-mq CPU Scheduler 0.99o by Alfred Chen.\n");
@@ -6353,7 +6365,10 @@ void ia64_set_curr_task(int cpu, struct task_struct *p)
#ifdef CONFIG_SCHED_DEBUG
void proc_sched_show_task(struct task_struct *p, struct pid_namespace *ns,
struct seq_file *m)
-{}
+{
+ SEQ_printf(m, "%s (%d, #threads: %d)\n", p->comm, task_pid_nr_ns(p, ns),
+ get_nr_threads(p));
+}
void proc_sched_set_task(struct task_struct *p)
{}

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linux-tkg/linux-tkg-patches/5.7/0006-add-acs-overrides_iommu.patch
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From cdeab384f48dd9c88e2dff2e9ad8d57dca1a1b1c Mon Sep 17 00:00:00 2001
From: Mark Weiman <mark.weiman@markzz.com>
Date: Sun, 12 Aug 2018 11:36:21 -0400
Subject: [PATCH] pci: Enable overrides for missing ACS capabilities
This an updated version of Alex Williamson's patch from:
https://lkml.org/lkml/2013/5/30/513
Original commit message follows:
PCIe ACS (Access Control Services) is the PCIe 2.0+ feature that
allows us to control whether transactions are allowed to be redirected
in various subnodes of a PCIe topology. For instance, if two
endpoints are below a root port or downsteam switch port, the
downstream port may optionally redirect transactions between the
devices, bypassing upstream devices. The same can happen internally
on multifunction devices. The transaction may never be visible to the
upstream devices.
One upstream device that we particularly care about is the IOMMU. If
a redirection occurs in the topology below the IOMMU, then the IOMMU
cannot provide isolation between devices. This is why the PCIe spec
encourages topologies to include ACS support. Without it, we have to
assume peer-to-peer DMA within a hierarchy can bypass IOMMU isolation.
Unfortunately, far too many topologies do not support ACS to make this
a steadfast requirement. Even the latest chipsets from Intel are only
sporadically supporting ACS. We have trouble getting interconnect
vendors to include the PCIe spec required PCIe capability, let alone
suggested features.
Therefore, we need to add some flexibility. The pcie_acs_override=
boot option lets users opt-in specific devices or sets of devices to
assume ACS support. The "downstream" option assumes full ACS support
on root ports and downstream switch ports. The "multifunction"
option assumes the subset of ACS features available on multifunction
endpoints and upstream switch ports are supported. The "id:nnnn:nnnn"
option enables ACS support on devices matching the provided vendor
and device IDs, allowing more strategic ACS overrides. These options
may be combined in any order. A maximum of 16 id specific overrides
are available. It's suggested to use the most limited set of options
necessary to avoid completely disabling ACS across the topology.
Note to hardware vendors, we have facilities to permanently quirk
specific devices which enforce isolation but not provide an ACS
capability. Please contact me to have your devices added and save
your customers the hassle of this boot option.
Signed-off-by: Mark Weiman <mark.weiman@markzz.com>
---
.../admin-guide/kernel-parameters.txt | 9 ++
drivers/pci/quirks.c | 101 ++++++++++++++++++
2 files changed, 110 insertions(+)
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index aefd358a5ca3..173b3596fd9e 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -3190,6 +3190,15 @@
nomsi [MSI] If the PCI_MSI kernel config parameter is
enabled, this kernel boot option can be used to
disable the use of MSI interrupts system-wide.
+ pcie_acs_override =
+ [PCIE] Override missing PCIe ACS support for:
+ downstream
+ All downstream ports - full ACS capabilities
+ multifunction
+ All multifunction devices - multifunction ACS subset
+ id:nnnn:nnnn
+ Specific device - full ACS capabilities
+ Specified as vid:did (vendor/device ID) in hex
noioapicquirk [APIC] Disable all boot interrupt quirks.
Safety option to keep boot IRQs enabled. This
should never be necessary.
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 4700d24e5d55..8f7a3d7fd9c1 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -3372,6 +3372,106 @@ static void quirk_no_bus_reset(struct pci_dev *dev)
dev->dev_flags |= PCI_DEV_FLAGS_NO_BUS_RESET;
}
+static bool acs_on_downstream;
+static bool acs_on_multifunction;
+
+#define NUM_ACS_IDS 16
+struct acs_on_id {
+ unsigned short vendor;
+ unsigned short device;
+};
+static struct acs_on_id acs_on_ids[NUM_ACS_IDS];
+static u8 max_acs_id;
+
+static __init int pcie_acs_override_setup(char *p)
+{
+ if (!p)
+ return -EINVAL;
+
+ while (*p) {
+ if (!strncmp(p, "downstream", 10))
+ acs_on_downstream = true;
+ if (!strncmp(p, "multifunction", 13))
+ acs_on_multifunction = true;
+ if (!strncmp(p, "id:", 3)) {
+ char opt[5];
+ int ret;
+ long val;
+
+ if (max_acs_id >= NUM_ACS_IDS - 1) {
+ pr_warn("Out of PCIe ACS override slots (%d)\n",
+ NUM_ACS_IDS);
+ goto next;
+ }
+
+ p += 3;
+ snprintf(opt, 5, "%s", p);
+ ret = kstrtol(opt, 16, &val);
+ if (ret) {
+ pr_warn("PCIe ACS ID parse error %d\n", ret);
+ goto next;
+ }
+ acs_on_ids[max_acs_id].vendor = val;
+
+ p += strcspn(p, ":");
+ if (*p != ':') {
+ pr_warn("PCIe ACS invalid ID\n");
+ goto next;
+ }
+
+ p++;
+ snprintf(opt, 5, "%s", p);
+ ret = kstrtol(opt, 16, &val);
+ if (ret) {
+ pr_warn("PCIe ACS ID parse error %d\n", ret);
+ goto next;
+ }
+ acs_on_ids[max_acs_id].device = val;
+ max_acs_id++;
+ }
+next:
+ p += strcspn(p, ",");
+ if (*p == ',')
+ p++;
+ }
+
+ if (acs_on_downstream || acs_on_multifunction || max_acs_id)
+ pr_warn("Warning: PCIe ACS overrides enabled; This may allow non-IOMMU protected peer-to-peer DMA\n");
+
+ return 0;
+}
+early_param("pcie_acs_override", pcie_acs_override_setup);
+
+static int pcie_acs_overrides(struct pci_dev *dev, u16 acs_flags)
+{
+ int i;
+
+ /* Never override ACS for legacy devices or devices with ACS caps */
+ if (!pci_is_pcie(dev) ||
+ pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ACS))
+ return -ENOTTY;
+
+ for (i = 0; i < max_acs_id; i++)
+ if (acs_on_ids[i].vendor == dev->vendor &&
+ acs_on_ids[i].device == dev->device)
+ return 1;
+
+ switch (pci_pcie_type(dev)) {
+ case PCI_EXP_TYPE_DOWNSTREAM:
+ case PCI_EXP_TYPE_ROOT_PORT:
+ if (acs_on_downstream)
+ return 1;
+ break;
+ case PCI_EXP_TYPE_ENDPOINT:
+ case PCI_EXP_TYPE_UPSTREAM:
+ case PCI_EXP_TYPE_LEG_END:
+ case PCI_EXP_TYPE_RC_END:
+ if (acs_on_multifunction && dev->multifunction)
+ return 1;
+ }
+
+ return -ENOTTY;
+}
/*
* Some Atheros AR9xxx and QCA988x chips do not behave after a bus reset.
* The device will throw a Link Down error on AER-capable systems and
@@ -4513,6 +4613,7 @@ static const struct pci_dev_acs_enabled {
{ PCI_VENDOR_ID_ZHAOXIN, 0x9083, pci_quirk_mf_endpoint_acs },
/* Zhaoxin Root/Downstream Ports */
{ PCI_VENDOR_ID_ZHAOXIN, PCI_ANY_ID, pci_quirk_zhaoxin_pcie_ports_acs },
+ { PCI_ANY_ID, PCI_ANY_ID, pcie_acs_overrides },
{ 0 }
};

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linux-tkg/linux-tkg-patches/5.7/0007-v5.7-fsync.patch
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From f7f49141a5dbe9c99d78196b58c44307fb2e6be3 Mon Sep 17 00:00:00 2001
From: Tk-Glitch <ti3nou@gmail.com>
Date: Mon, 20 Apr 2020 14:09:11 +0200
Subject: Import Fsync v3 patchset - Squashed from https://gitlab.collabora.com/tonyk/linux/-/commits/futex-proton-v3
diff --git a/include/uapi/linux/futex.h b/include/uapi/linux/futex.h
index a89eb0accd5e2ee527be1e3e11b1117ff5bf94b4..580001e89c6caed57dd8b3cb491d65dce846caff 100644
--- a/include/uapi/linux/futex.h
+++ b/include/uapi/linux/futex.h
@@ -21,6 +21,7 @@
#define FUTEX_WAKE_BITSET 10
#define FUTEX_WAIT_REQUEUE_PI 11
#define FUTEX_CMP_REQUEUE_PI 12
+#define FUTEX_WAIT_MULTIPLE 13
#define FUTEX_PRIVATE_FLAG 128
#define FUTEX_CLOCK_REALTIME 256
@@ -40,6 +41,8 @@
FUTEX_PRIVATE_FLAG)
#define FUTEX_CMP_REQUEUE_PI_PRIVATE (FUTEX_CMP_REQUEUE_PI | \
FUTEX_PRIVATE_FLAG)
+#define FUTEX_WAIT_MULTIPLE_PRIVATE (FUTEX_WAIT_MULTIPLE | \
+ FUTEX_PRIVATE_FLAG)
/*
* Support for robust futexes: the kernel cleans up held futexes at
@@ -150,4 +153,21 @@ struct robust_list_head {
(((op & 0xf) << 28) | ((cmp & 0xf) << 24) \
| ((oparg & 0xfff) << 12) | (cmparg & 0xfff))
+/*
+ * Maximum number of multiple futexes to wait for
+ */
+#define FUTEX_MULTIPLE_MAX_COUNT 128
+
+/**
+ * struct futex_wait_block - Block of futexes to be waited for
+ * @uaddr: User address of the futex
+ * @val: Futex value expected by userspace
+ * @bitset: Bitset for the optional bitmasked wakeup
+ */
+struct futex_wait_block {
+ __u32 __user *uaddr;
+ __u32 val;
+ __u32 bitset;
+};
+
#endif /* _UAPI_LINUX_FUTEX_H */
diff --git a/kernel/futex.c b/kernel/futex.c
index 0cf84c8664f207c574325b899ef2e57f01295a94..58cf9eb2b851b4858e29b5ef4114a29a92e676ba 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -215,6 +215,8 @@ struct futex_pi_state {
* @rt_waiter: rt_waiter storage for use with requeue_pi
* @requeue_pi_key: the requeue_pi target futex key
* @bitset: bitset for the optional bitmasked wakeup
+ * @uaddr: userspace address of futex
+ * @uval: expected futex's value
*
* We use this hashed waitqueue, instead of a normal wait_queue_entry_t, so
* we can wake only the relevant ones (hashed queues may be shared).
@@ -237,6 +239,8 @@ struct futex_q {
struct rt_mutex_waiter *rt_waiter;
union futex_key *requeue_pi_key;
u32 bitset;
+ u32 __user *uaddr;
+ u32 uval;
} __randomize_layout;
static const struct futex_q futex_q_init = {
@@ -2420,6 +2424,29 @@ static int unqueue_me(struct futex_q *q)
return ret;
}
+/**
+ * unqueue_multiple() - Remove several futexes from their futex_hash_bucket
+ * @q: The list of futexes to unqueue
+ * @count: Number of futexes in the list
+ *
+ * Helper to unqueue a list of futexes. This can't fail.
+ *
+ * Return:
+ * - >=0 - Index of the last futex that was awoken;
+ * - -1 - If no futex was awoken
+ */
+static int unqueue_multiple(struct futex_q *q, int count)
+{
+ int ret = -1;
+ int i;
+
+ for (i = 0; i < count; i++) {
+ if (!unqueue_me(&q[i]))
+ ret = i;
+ }
+ return ret;
+}
+
/*
* PI futexes can not be requeued and must remove themself from the
* hash bucket. The hash bucket lock (i.e. lock_ptr) is held on entry
@@ -2783,6 +2810,211 @@ static int futex_wait_setup(u32 __user *uaddr, u32 val, unsigned int flags,
return ret;
}
+/**
+ * futex_wait_multiple_setup() - Prepare to wait and enqueue multiple futexes
+ * @qs: The corresponding futex list
+ * @count: The size of the lists
+ * @flags: Futex flags (FLAGS_SHARED, etc.)
+ * @awaken: Index of the last awoken futex
+ *
+ * Prepare multiple futexes in a single step and enqueue them. This may fail if
+ * the futex list is invalid or if any futex was already awoken. On success the
+ * task is ready to interruptible sleep.
+ *
+ * Return:
+ * - 1 - One of the futexes was awaken by another thread
+ * - 0 - Success
+ * - <0 - -EFAULT, -EWOULDBLOCK or -EINVAL
+ */
+static int futex_wait_multiple_setup(struct futex_q *qs, int count,
+ unsigned int flags, int *awaken)
+{
+ struct futex_hash_bucket *hb;
+ int ret, i;
+ u32 uval;
+
+ /*
+ * Enqueuing multiple futexes is tricky, because we need to
+ * enqueue each futex in the list before dealing with the next
+ * one to avoid deadlocking on the hash bucket. But, before
+ * enqueuing, we need to make sure that current->state is
+ * TASK_INTERRUPTIBLE, so we don't absorb any awake events, which
+ * cannot be done before the get_futex_key of the next key,
+ * because it calls get_user_pages, which can sleep. Thus, we
+ * fetch the list of futexes keys in two steps, by first pinning
+ * all the memory keys in the futex key, and only then we read
+ * each key and queue the corresponding futex.
+ */
+retry:
+ for (i = 0; i < count; i++) {
+ qs[i].key = FUTEX_KEY_INIT;
+ ret = get_futex_key(qs[i].uaddr, flags & FLAGS_SHARED,
+ &qs[i].key, FUTEX_READ);
+ if (unlikely(ret)) {
+ for (--i; i >= 0; i--)
+ put_futex_key(&qs[i].key);
+ return ret;
+ }
+ }
+
+ set_current_state(TASK_INTERRUPTIBLE);
+
+ for (i = 0; i < count; i++) {
+ struct futex_q *q = &qs[i];
+
+ hb = queue_lock(q);
+
+ ret = get_futex_value_locked(&uval, q->uaddr);
+ if (ret) {
+ /*
+ * We need to try to handle the fault, which
+ * cannot be done without sleep, so we need to
+ * undo all the work already done, to make sure
+ * we don't miss any wake ups. Therefore, clean
+ * up, handle the fault and retry from the
+ * beginning.
+ */
+ queue_unlock(hb);
+
+ /*
+ * Keys 0..(i-1) are implicitly put
+ * on unqueue_multiple.
+ */
+ put_futex_key(&q->key);
+
+ *awaken = unqueue_multiple(qs, i);
+
+ __set_current_state(TASK_RUNNING);
+
+ /*
+ * On a real fault, prioritize the error even if
+ * some other futex was awoken. Userspace gave
+ * us a bad address, -EFAULT them.
+ */
+ ret = get_user(uval, q->uaddr);
+ if (ret)
+ return ret;
+
+ /*
+ * Even if the page fault was handled, If
+ * something was already awaken, we can safely
+ * give up and succeed to give a hint for userspace to
+ * acquire the right futex faster.
+ */
+ if (*awaken >= 0)
+ return 1;
+
+ goto retry;
+ }
+
+ if (uval != q->uval) {
+ queue_unlock(hb);
+
+ put_futex_key(&qs[i].key);
+
+ /*
+ * If something was already awaken, we can
+ * safely ignore the error and succeed.
+ */
+ *awaken = unqueue_multiple(qs, i);
+ __set_current_state(TASK_RUNNING);
+ if (*awaken >= 0)
+ return 1;
+
+ return -EWOULDBLOCK;
+ }
+
+ /*
+ * The bucket lock can't be held while dealing with the
+ * next futex. Queue each futex at this moment so hb can
+ * be unlocked.
+ */
+ queue_me(&qs[i], hb);
+ }
+ return 0;
+}
+
+/**
+ * futex_wait_multiple() - Prepare to wait on and enqueue several futexes
+ * @qs: The list of futexes to wait on
+ * @op: Operation code from futex's syscall
+ * @count: The number of objects
+ * @abs_time: Timeout before giving up and returning to userspace
+ *
+ * Entry point for the FUTEX_WAIT_MULTIPLE futex operation, this function
+ * sleeps on a group of futexes and returns on the first futex that
+ * triggered, or after the timeout has elapsed.
+ *
+ * Return:
+ * - >=0 - Hint to the futex that was awoken
+ * - <0 - On error
+ */
+static int futex_wait_multiple(struct futex_q *qs, int op,
+ u32 count, ktime_t *abs_time)
+{
+ struct hrtimer_sleeper timeout, *to;
+ int ret, flags = 0, hint = 0;
+ unsigned int i;
+
+ if (!(op & FUTEX_PRIVATE_FLAG))
+ flags |= FLAGS_SHARED;
+
+ if (op & FUTEX_CLOCK_REALTIME)
+ flags |= FLAGS_CLOCKRT;
+
+ to = futex_setup_timer(abs_time, &timeout, flags, 0);
+ while (1) {
+ ret = futex_wait_multiple_setup(qs, count, flags, &hint);
+ if (ret) {
+ if (ret > 0) {
+ /* A futex was awaken during setup */
+ ret = hint;
+ }
+ break;
+ }
+
+ if (to)
+ hrtimer_start_expires(&to->timer, HRTIMER_MODE_ABS);
+
+ /*
+ * Avoid sleeping if another thread already tried to
+ * wake us.
+ */
+ for (i = 0; i < count; i++) {
+ if (plist_node_empty(&qs[i].list))
+ break;
+ }
+
+ if (i == count && (!to || to->task))
+ freezable_schedule();
+
+ ret = unqueue_multiple(qs, count);
+
+ __set_current_state(TASK_RUNNING);
+
+ if (ret >= 0)
+ break;
+ if (to && !to->task) {
+ ret = -ETIMEDOUT;
+ break;
+ } else if (signal_pending(current)) {
+ ret = -ERESTARTSYS;
+ break;
+ }
+ /*
+ * The final case is a spurious wakeup, for
+ * which just retry.
+ */
+ }
+
+ if (to) {
+ hrtimer_cancel(&to->timer);
+ destroy_hrtimer_on_stack(&to->timer);
+ }
+
+ return ret;
+}
+
static int futex_wait(u32 __user *uaddr, unsigned int flags, u32 val,
ktime_t *abs_time, u32 bitset)
{
@@ -3907,6 +4139,43 @@ long do_futex(u32 __user *uaddr, int op, u32 val, ktime_t *timeout,
return -ENOSYS;
}
+/**
+ * futex_read_wait_block - Read an array of futex_wait_block from userspace
+ * @uaddr: Userspace address of the block
+ * @count: Number of blocks to be read
+ *
+ * This function creates and allocate an array of futex_q (we zero it to
+ * initialize the fields) and then, for each futex_wait_block element from
+ * userspace, fill a futex_q element with proper values.
+ */
+inline struct futex_q *futex_read_wait_block(u32 __user *uaddr, u32 count)
+{
+ unsigned int i;
+ struct futex_q *qs;
+ struct futex_wait_block fwb;
+ struct futex_wait_block __user *entry =
+ (struct futex_wait_block __user *)uaddr;
+
+ if (!count || count > FUTEX_MULTIPLE_MAX_COUNT)
+ return ERR_PTR(-EINVAL);
+
+ qs = kcalloc(count, sizeof(*qs), GFP_KERNEL);
+ if (!qs)
+ return ERR_PTR(-ENOMEM);
+
+ for (i = 0; i < count; i++) {
+ if (copy_from_user(&fwb, &entry[i], sizeof(fwb))) {
+ kfree(qs);
+ return ERR_PTR(-EFAULT);
+ }
+
+ qs[i].uaddr = fwb.uaddr;
+ qs[i].uval = fwb.val;
+ qs[i].bitset = fwb.bitset;
+ }
+
+ return qs;
+}
SYSCALL_DEFINE6(futex, u32 __user *, uaddr, int, op, u32, val,
struct __kernel_timespec __user *, utime, u32 __user *, uaddr2,
@@ -3919,7 +4188,8 @@ SYSCALL_DEFINE6(futex, u32 __user *, uaddr, int, op, u32, val,
if (utime && (cmd == FUTEX_WAIT || cmd == FUTEX_LOCK_PI ||
cmd == FUTEX_WAIT_BITSET ||
- cmd == FUTEX_WAIT_REQUEUE_PI)) {
+ cmd == FUTEX_WAIT_REQUEUE_PI ||
+ cmd == FUTEX_WAIT_MULTIPLE)) {
if (unlikely(should_fail_futex(!(op & FUTEX_PRIVATE_FLAG))))
return -EFAULT;
if (get_timespec64(&ts, utime))
@@ -3940,6 +4210,25 @@ SYSCALL_DEFINE6(futex, u32 __user *, uaddr, int, op, u32, val,
cmd == FUTEX_CMP_REQUEUE_PI || cmd == FUTEX_WAKE_OP)
val2 = (u32) (unsigned long) utime;
+ if (cmd == FUTEX_WAIT_MULTIPLE) {
+ int ret;
+ struct futex_q *qs;
+
+#ifdef CONFIG_X86_X32
+ if (unlikely(in_x32_syscall()))
+ return -ENOSYS;
+#endif
+ qs = futex_read_wait_block(uaddr, val);
+
+ if (IS_ERR(qs))
+ return PTR_ERR(qs);
+
+ ret = futex_wait_multiple(qs, op, val, tp);
+ kfree(qs);
+
+ return ret;
+ }
+
return do_futex(uaddr, op, val, tp, uaddr2, val2, val3);
}
@@ -4102,6 +4391,57 @@ COMPAT_SYSCALL_DEFINE3(get_robust_list, int, pid,
#endif /* CONFIG_COMPAT */
#ifdef CONFIG_COMPAT_32BIT_TIME
+/**
+ * struct compat_futex_wait_block - Block of futexes to be waited for
+ * @uaddr: User address of the futex (compatible pointer)
+ * @val: Futex value expected by userspace
+ * @bitset: Bitset for the optional bitmasked wakeup
+ */
+struct compat_futex_wait_block {
+ compat_uptr_t uaddr;
+ __u32 val;
+ __u32 bitset;
+};
+
+/**
+ * compat_futex_read_wait_block - Read an array of futex_wait_block from
+ * userspace
+ * @uaddr: Userspace address of the block
+ * @count: Number of blocks to be read
+ *
+ * This function does the same as futex_read_wait_block(), except that it
+ * converts the pointer to the futex from the compat version to the regular one.
+ */
+inline struct futex_q *compat_futex_read_wait_block(u32 __user *uaddr,
+ u32 count)
+{
+ unsigned int i;
+ struct futex_q *qs;
+ struct compat_futex_wait_block fwb;
+ struct compat_futex_wait_block __user *entry =
+ (struct compat_futex_wait_block __user *)uaddr;
+
+ if (!count || count > FUTEX_MULTIPLE_MAX_COUNT)
+ return ERR_PTR(-EINVAL);
+
+ qs = kcalloc(count, sizeof(*qs), GFP_KERNEL);
+ if (!qs)
+ return ERR_PTR(-ENOMEM);
+
+ for (i = 0; i < count; i++) {
+ if (copy_from_user(&fwb, &entry[i], sizeof(fwb))) {
+ kfree(qs);
+ return ERR_PTR(-EFAULT);
+ }
+
+ qs[i].uaddr = compat_ptr(fwb.uaddr);
+ qs[i].uval = fwb.val;
+ qs[i].bitset = fwb.bitset;
+ }
+
+ return qs;
+}
+
SYSCALL_DEFINE6(futex_time32, u32 __user *, uaddr, int, op, u32, val,
struct old_timespec32 __user *, utime, u32 __user *, uaddr2,
u32, val3)
@@ -4113,7 +4453,8 @@ SYSCALL_DEFINE6(futex_time32, u32 __user *, uaddr, int, op, u32, val,
if (utime && (cmd == FUTEX_WAIT || cmd == FUTEX_LOCK_PI ||
cmd == FUTEX_WAIT_BITSET ||
- cmd == FUTEX_WAIT_REQUEUE_PI)) {
+ cmd == FUTEX_WAIT_REQUEUE_PI ||
+ cmd == FUTEX_WAIT_MULTIPLE)) {
if (get_old_timespec32(&ts, utime))
return -EFAULT;
if (!timespec64_valid(&ts))
@@ -4128,6 +4469,19 @@ SYSCALL_DEFINE6(futex_time32, u32 __user *, uaddr, int, op, u32, val,
cmd == FUTEX_CMP_REQUEUE_PI || cmd == FUTEX_WAKE_OP)
val2 = (int) (unsigned long) utime;
+ if (cmd == FUTEX_WAIT_MULTIPLE) {
+ int ret;
+ struct futex_q *qs = compat_futex_read_wait_block(uaddr, val);
+
+ if (IS_ERR(qs))
+ return PTR_ERR(qs);
+
+ ret = futex_wait_multiple(qs, op, val, tp);
+ kfree(qs);
+
+ return ret;
+ }
+
return do_futex(uaddr, op, val, tp, uaddr2, val2, val3);
}
#endif /* CONFIG_COMPAT_32BIT_TIME */
diff --git a/tools/testing/selftests/futex/functional/futex_wait_timeout.c b/tools/testing/selftests/futex/functional/futex_wait_timeout.c
index ee55e6d389a3f053194435342c4e471dc7cf8786..2a63e1c2cfb6407a5988233217cff2e52787bc66 100644
--- a/tools/testing/selftests/futex/functional/futex_wait_timeout.c
+++ b/tools/testing/selftests/futex/functional/futex_wait_timeout.c
@@ -11,6 +11,7 @@
*
* HISTORY
* 2009-Nov-6: Initial version by Darren Hart <dvhart@linux.intel.com>
+ * 2019-Dec-13: Add WAIT_MULTIPLE test by Krisman <krisman@collabora.com>
*
*****************************************************************************/
@@ -41,6 +42,8 @@ int main(int argc, char *argv[])
{
futex_t f1 = FUTEX_INITIALIZER;
struct timespec to;
+ time_t secs;
+ struct futex_wait_block fwb = {&f1, f1, 0};
int res, ret = RET_PASS;
int c;
@@ -65,7 +68,7 @@ int main(int argc, char *argv[])
}
ksft_print_header();
- ksft_set_plan(1);
+ ksft_set_plan(2);
ksft_print_msg("%s: Block on a futex and wait for timeout\n",
basename(argv[0]));
ksft_print_msg("\tArguments: timeout=%ldns\n", timeout_ns);
@@ -79,8 +82,39 @@ int main(int argc, char *argv[])
if (!res || errno != ETIMEDOUT) {
fail("futex_wait returned %d\n", ret < 0 ? errno : ret);
ret = RET_FAIL;
+ } else
+ ksft_test_result_pass("futex_wait timeout succeeds\n");
+
+ info("Calling futex_wait_multiple on f1: %u @ %p\n", f1, &f1);
+
+ /* Setup absolute time */
+ ret = clock_gettime(CLOCK_REALTIME, &to);
+ secs = (to.tv_nsec + timeout_ns) / 1000000000;
+ to.tv_nsec = ((int64_t)to.tv_nsec + timeout_ns) % 1000000000;
+ to.tv_sec += secs;
+ info("to.tv_sec = %ld\n", to.tv_sec);
+ info("to.tv_nsec = %ld\n", to.tv_nsec);
+
+ res = futex_wait_multiple(&fwb, 1, &to,
+ FUTEX_PRIVATE_FLAG | FUTEX_CLOCK_REALTIME);
+
+#ifdef __ILP32__
+ if (res == -1 && errno == ENOSYS) {
+ ksft_test_result_skip("futex_wait_multiple not supported at x32\n");
+ } else {
+ ksft_test_result_fail("futex_wait_multiple returned %d\n",
+ res < 0 ? errno : res);
+ ret = RET_FAIL;
}
+#else
+ if (!res || errno != ETIMEDOUT) {
+ ksft_test_result_fail("futex_wait_multiple returned %d\n",
+ res < 0 ? errno : res);
+ ret = RET_FAIL;
+ } else
+ ksft_test_result_pass("futex_wait_multiple timeout succeeds\n");
+#endif /* __ILP32__ */
- print_result(TEST_NAME, ret);
+ ksft_print_cnts();
return ret;
}
diff --git a/tools/testing/selftests/futex/include/futextest.h b/tools/testing/selftests/futex/include/futextest.h
index ddbcfc9b7bac4aebb5bac2f249e26ecfd948aa84..bb103bef4557012ef9a389ca74c868e4476a8a31 100644
--- a/tools/testing/selftests/futex/include/futextest.h
+++ b/tools/testing/selftests/futex/include/futextest.h
@@ -38,6 +38,14 @@ typedef volatile u_int32_t futex_t;
#ifndef FUTEX_CMP_REQUEUE_PI
#define FUTEX_CMP_REQUEUE_PI 12
#endif
+#ifndef FUTEX_WAIT_MULTIPLE
+#define FUTEX_WAIT_MULTIPLE 13
+struct futex_wait_block {
+ futex_t *uaddr;
+ futex_t val;
+ __u32 bitset;
+};
+#endif
#ifndef FUTEX_WAIT_REQUEUE_PI_PRIVATE
#define FUTEX_WAIT_REQUEUE_PI_PRIVATE (FUTEX_WAIT_REQUEUE_PI | \
FUTEX_PRIVATE_FLAG)
@@ -80,6 +88,20 @@ futex_wait(futex_t *uaddr, futex_t val, struct timespec *timeout, int opflags)
return futex(uaddr, FUTEX_WAIT, val, timeout, NULL, 0, opflags);
}
+/**
+ * futex_wait_multiple() - block on several futexes with optional timeout
+ * @fwb: wait block user space address
+ * @count: number of entities at fwb
+ * @timeout: absolute timeout
+ */
+static inline int
+futex_wait_multiple(struct futex_wait_block *fwb, int count,
+ struct timespec *timeout, int opflags)
+{
+ return futex(fwb, FUTEX_WAIT_MULTIPLE, count, timeout, NULL, 0,
+ opflags);
+}
+
/**
* futex_wake() - wake one or more tasks blocked on uaddr
* @nr_wake: wake up to this many tasks
diff --git a/tools/testing/selftests/futex/functional/futex_wait_wouldblock.c b/tools/testing/selftests/futex/functional/futex_wait_wouldblock.c
index 0ae390ff816449c88d0bb655a26eb014382c2b4f..bcbac042992d447e0bc9ef5fefe94e875de310f2 100644
--- a/tools/testing/selftests/futex/functional/futex_wait_wouldblock.c
+++ b/tools/testing/selftests/futex/functional/futex_wait_wouldblock.c
@@ -12,6 +12,7 @@
*
* HISTORY
* 2009-Nov-14: Initial version by Gowrishankar <gowrishankar.m@in.ibm.com>
+ * 2019-Dec-13: Add WAIT_MULTIPLE test by Krisman <krisman@collabora.com>
*
*****************************************************************************/
@@ -40,6 +41,7 @@ int main(int argc, char *argv[])
{
struct timespec to = {.tv_sec = 0, .tv_nsec = timeout_ns};
futex_t f1 = FUTEX_INITIALIZER;
+ struct futex_wait_block fwb = {&f1, f1+1, 0};
int res, ret = RET_PASS;
int c;
@@ -61,7 +63,7 @@ int main(int argc, char *argv[])
}
ksft_print_header();
- ksft_set_plan(1);
+ ksft_set_plan(2);
ksft_print_msg("%s: Test the unexpected futex value in FUTEX_WAIT\n",
basename(argv[0]));
@@ -71,8 +73,30 @@ int main(int argc, char *argv[])
fail("futex_wait returned: %d %s\n",
res ? errno : res, res ? strerror(errno) : "");
ret = RET_FAIL;
+ } else
+ ksft_test_result_pass("futex_wait wouldblock succeeds\n");
+
+ info("Calling futex_wait_multiple on f1: %u @ %p with val=%u\n",
+ f1, &f1, f1+1);
+ res = futex_wait_multiple(&fwb, 1, NULL, FUTEX_PRIVATE_FLAG);
+
+#ifdef __ILP32__
+ if (res != -1 || errno != ENOSYS) {
+ ksft_test_result_fail("futex_wait_multiple returned %d\n",
+ res < 0 ? errno : res);
+ ret = RET_FAIL;
+ } else {
+ ksft_test_result_skip("futex_wait_multiple not supported at x32\n");
+ }
+#else
+ if (!res || errno != EWOULDBLOCK) {
+ ksft_test_result_fail("futex_wait_multiple returned %d\n",
+ res < 0 ? errno : res);
+ ret = RET_FAIL;
}
+ ksft_test_result_pass("futex_wait_multiple wouldblock succeeds\n");
+#endif /* __ILP32__ */
- print_result(TEST_NAME, ret);
+ ksft_print_cnts();
return ret;
}
diff --git a/tools/testing/selftests/futex/functional/.gitignore b/tools/testing/selftests/futex/functional/.gitignore
index a09f570619023750f558c84004aff166b4337d72..4660128a545edb04a17cc6bd9760931c1386122f 100644
--- a/tools/testing/selftests/futex/functional/.gitignore
+++ b/tools/testing/selftests/futex/functional/.gitignore
@@ -5,3 +5,4 @@ futex_wait_private_mapped_file
futex_wait_timeout
futex_wait_uninitialized_heap
futex_wait_wouldblock
+futex_wait_multiple
diff --git a/tools/testing/selftests/futex/functional/Makefile b/tools/testing/selftests/futex/functional/Makefile
index 30996306cabcfe89a47977643e529b122893bb7e..75f9fface11fa3c90c1bdb9a49b3ea51291afd58 100644
--- a/tools/testing/selftests/futex/functional/Makefile
+++ b/tools/testing/selftests/futex/functional/Makefile
@@ -14,7 +14,8 @@ TEST_GEN_FILES := \
futex_requeue_pi_signal_restart \
futex_requeue_pi_mismatched_ops \
futex_wait_uninitialized_heap \
- futex_wait_private_mapped_file
+ futex_wait_private_mapped_file \
+ futex_wait_multiple
TEST_PROGS := run.sh
diff --git a/tools/testing/selftests/futex/functional/futex_wait_multiple.c b/tools/testing/selftests/futex/functional/futex_wait_multiple.c
new file mode 100644
index 0000000000000000000000000000000000000000..b48422e79f42edba1653bb0bd2a4c4fd98d2d48d
--- /dev/null
+++ b/tools/testing/selftests/futex/functional/futex_wait_multiple.c
@@ -0,0 +1,173 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/******************************************************************************
+ *
+ * Copyright © Collabora, Ltd., 2019
+ *
+ * DESCRIPTION
+ * Test basic semantics of FUTEX_WAIT_MULTIPLE
+ *
+ * AUTHOR
+ * Gabriel Krisman Bertazi <krisman@collabora.com>
+ *
+ * HISTORY
+ * 2019-Dec-13: Initial version by Krisman <krisman@collabora.com>
+ *
+ *****************************************************************************/
+
+#include <errno.h>
+#include <getopt.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <pthread.h>
+#include "futextest.h"
+#include "logging.h"
+
+#define TEST_NAME "futex-wait-multiple"
+#define timeout_ns 100000
+#define MAX_COUNT 128
+#define WAKE_WAIT_US 3000000
+
+int ret = RET_PASS;
+char *progname;
+futex_t f[MAX_COUNT] = {0};
+struct futex_wait_block fwb[MAX_COUNT];
+
+void usage(char *prog)
+{
+ printf("Usage: %s\n", prog);
+ printf(" -c Use color\n");
+ printf(" -h Display this help message\n");
+ printf(" -v L Verbosity level: %d=QUIET %d=CRITICAL %d=INFO\n",
+ VQUIET, VCRITICAL, VINFO);
+}
+
+void test_count_overflow(void)
+{
+ futex_t f = FUTEX_INITIALIZER;
+ struct futex_wait_block fwb[MAX_COUNT+1];
+ int res, i;
+
+ ksft_print_msg("%s: Test a too big number of futexes\n", progname);
+
+ for (i = 0; i < MAX_COUNT+1; i++) {
+ fwb[i].uaddr = &f;
+ fwb[i].val = f;
+ fwb[i].bitset = 0;
+ }
+
+ res = futex_wait_multiple(fwb, MAX_COUNT+1, NULL, FUTEX_PRIVATE_FLAG);
+
+#ifdef __ILP32__
+ if (res != -1 || errno != ENOSYS) {
+ ksft_test_result_fail("futex_wait_multiple returned %d\n",
+ res < 0 ? errno : res);
+ ret = RET_FAIL;
+ } else {
+ ksft_test_result_skip("futex_wait_multiple not supported at x32\n");
+ }
+#else
+ if (res != -1 || errno != EINVAL) {
+ ksft_test_result_fail("futex_wait_multiple returned %d\n",
+ res < 0 ? errno : res);
+ ret = RET_FAIL;
+ } else {
+ ksft_test_result_pass("futex_wait_multiple count overflow succeed\n");
+ }
+
+#endif /* __ILP32__ */
+}
+
+void *waiterfn(void *arg)
+{
+ int res;
+
+ res = futex_wait_multiple(fwb, MAX_COUNT, NULL, FUTEX_PRIVATE_FLAG);
+
+#ifdef __ILP32__
+ if (res != -1 || errno != ENOSYS) {
+ ksft_test_result_fail("futex_wait_multiple returned %d\n",
+ res < 0 ? errno : res);
+ ret = RET_FAIL;
+ } else {
+ ksft_test_result_skip("futex_wait_multiple not supported at x32\n");
+ }
+#else
+ if (res < 0)
+ ksft_print_msg("waiter failed %d\n", res);
+
+ info("futex_wait_multiple: Got hint futex %d was freed\n", res);
+#endif /* __ILP32__ */
+
+ return NULL;
+}
+
+void test_fwb_wakeup(void)
+{
+ int res, i;
+ pthread_t waiter;
+
+ ksft_print_msg("%s: Test wake up in a list of futex\n", progname);
+
+ for (i = 0; i < MAX_COUNT; i++) {
+ fwb[i].uaddr = &f[i];
+ fwb[i].val = f[i];
+ fwb[i].bitset = 0xffffffff;
+ }
+
+ res = pthread_create(&waiter, NULL, waiterfn, NULL);
+ if (res) {
+ ksft_test_result_fail("Creating waiting thread failed");
+ ksft_exit_fail();
+ }
+
+ usleep(WAKE_WAIT_US);
+ res = futex_wake(&(f[MAX_COUNT-1]), 1, FUTEX_PRIVATE_FLAG);
+ if (res != 1) {
+ ksft_test_result_fail("Failed to wake thread res=%d\n", res);
+ ksft_exit_fail();
+ }
+
+ pthread_join(waiter, NULL);
+ ksft_test_result_pass("%s succeed\n", __func__);
+}
+
+int main(int argc, char *argv[])
+{
+ int c;
+
+ while ((c = getopt(argc, argv, "cht:v:")) != -1) {
+ switch (c) {
+ case 'c':
+ log_color(1);
+ break;
+ case 'h':
+ usage(basename(argv[0]));
+ exit(0);
+ case 'v':
+ log_verbosity(atoi(optarg));
+ break;
+ default:
+ usage(basename(argv[0]));
+ exit(1);
+ }
+ }
+
+ progname = basename(argv[0]);
+
+ ksft_print_header();
+ ksft_set_plan(2);
+
+ test_count_overflow();
+
+#ifdef __ILP32__
+ // if it's a 32x binary, there's no futex to wakeup
+ ksft_test_result_skip("futex_wait_multiple not supported at x32\n");
+#else
+ test_fwb_wakeup();
+#endif /* __ILP32__ */
+
+ ksft_print_cnts();
+ return ret;
+}
diff --git a/tools/testing/selftests/futex/functional/run.sh b/tools/testing/selftests/futex/functional/run.sh
index 1acb6ace1680e8f3d6b3ee2dc528c19ddfdb018e..a8be94f28ff78b4879d2d19bca5d9b0fcb26c1f8 100755
--- a/tools/testing/selftests/futex/functional/run.sh
+++ b/tools/testing/selftests/futex/functional/run.sh
@@ -73,3 +73,6 @@ echo
echo
./futex_wait_uninitialized_heap $COLOR
./futex_wait_private_mapped_file $COLOR
+
+echo
+./futex_wait_multiple $COLOR
diff --git a/include/uapi/linux/futex.h b/include/uapi/linux/futex.h
index 580001e89c6caed57dd8b3cb491d65dce846caff..a3e760886b8e7e74285fdcf2caaaa6f66ad16675 100644
--- a/include/uapi/linux/futex.h
+++ b/include/uapi/linux/futex.h
@@ -21,7 +21,7 @@
#define FUTEX_WAKE_BITSET 10
#define FUTEX_WAIT_REQUEUE_PI 11
#define FUTEX_CMP_REQUEUE_PI 12
-#define FUTEX_WAIT_MULTIPLE 13
+#define FUTEX_WAIT_MULTIPLE 31
#define FUTEX_PRIVATE_FLAG 128
#define FUTEX_CLOCK_REALTIME 256
diff --git a/kernel/futex.c b/kernel/futex.c
index 58cf9eb2b851b4858e29b5ef4114a29a92e676ba..e0bb628a5e1988dcc9ae5442a4259edc229d578d 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -4198,7 +4198,7 @@ SYSCALL_DEFINE6(futex, u32 __user *, uaddr, int, op, u32, val,
return -EINVAL;
t = timespec64_to_ktime(ts);
- if (cmd == FUTEX_WAIT)
+ if (cmd == FUTEX_WAIT || cmd == FUTEX_WAIT_MULTIPLE)
t = ktime_add_safe(ktime_get(), t);
tp = &t;
}
@@ -4399,6 +4399,7 @@ COMPAT_SYSCALL_DEFINE3(get_robust_list, int, pid,
*/
struct compat_futex_wait_block {
compat_uptr_t uaddr;
+ __u32 pad;
__u32 val;
__u32 bitset;
};
@@ -4461,7 +4462,7 @@ SYSCALL_DEFINE6(futex_time32, u32 __user *, uaddr, int, op, u32, val,
return -EINVAL;
t = timespec64_to_ktime(ts);
- if (cmd == FUTEX_WAIT)
+ if (cmd == FUTEX_WAIT || cmd == FUTEX_WAIT_MULTIPLE)
t = ktime_add_safe(ktime_get(), t);
tp = &t;
}

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linux-tkg/linux-tkg-patches/5.7/0009-glitched-bmq.patch
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From f7f49141a5dbe9c99d78196b58c44307fb2e6be3 Mon Sep 17 00:00:00 2001
From: Tk-Glitch <ti3nou@gmail.com>
Date: Wed, 4 Jul 2018 04:30:08 +0200
Subject: glitched - BMQ
diff --git a/kernel/Kconfig.hz b/kernel/Kconfig.hz
index 2a202a846757..1d9c7ed79b11 100644
--- a/kernel/Kconfig.hz
+++ b/kernel/Kconfig.hz
@@ -4,7 +4,7 @@
choice
prompt "Timer frequency"
- default HZ_250
+ default HZ_500
help
Allows the configuration of the timer frequency. It is customary
to have the timer interrupt run at 1000 Hz but 100 Hz may be more
@@ -39,6 +39,13 @@ choice
on SMP and NUMA systems and exactly dividing by both PAL and
NTSC frame rates for video and multimedia work.
+ config HZ_500
+ bool "500 HZ"
+ help
+ 500 Hz is a balanced timer frequency. Provides fast interactivity
+ on desktops with great smoothness without increasing CPU power
+ consumption and sacrificing the battery life on laptops.
+
config HZ_1000
bool "1000 HZ"
help
@@ -52,6 +59,7 @@ config HZ
default 100 if HZ_100
default 250 if HZ_250
default 300 if HZ_300
+ default 500 if HZ_500
default 1000 if HZ_1000
config SCHED_HRTICK
diff --git a/kernel/Kconfig.hz b/kernel/Kconfig.hz
index 2a202a846757..1d9c7ed79b11 100644
--- a/kernel/Kconfig.hz
+++ b/kernel/Kconfig.hz
@@ -4,7 +4,7 @@
choice
prompt "Timer frequency"
- default HZ_500
+ default HZ_750
help
Allows the configuration of the timer frequency. It is customary
to have the timer interrupt run at 1000 Hz but 100 Hz may be more
@@ -46,6 +46,13 @@ choice
on desktops with great smoothness without increasing CPU power
consumption and sacrificing the battery life on laptops.
+ config HZ_750
+ bool "750 HZ"
+ help
+ 750 Hz is a good timer frequency for desktops. Provides fast
+ interactivity with great smoothness without sacrificing too
+ much throughput.
+
config HZ_1000
bool "1000 HZ"
help
@@ -60,6 +67,7 @@ config HZ
default 250 if HZ_250
default 300 if HZ_300
default 500 if HZ_500
+ default 750 if HZ_750
default 1000 if HZ_1000
config SCHED_HRTICK
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 9270a4370d54..30d01e647417 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -159,7 +159,7 @@ struct scan_control {
/*
* From 0 .. 100. Higher means more swappy.
*/
-int vm_swappiness = 60;
+int vm_swappiness = 20;
/*
* The total number of pages which are beyond the high watermark within all
* zones.

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diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index 6b423eebfd5d..61e3271675d6 100644
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -21,10 +21,10 @@
#include "cpufreq_ondemand.h"
/* On-demand governor macros */
-#define DEF_FREQUENCY_UP_THRESHOLD (80)
-#define DEF_SAMPLING_DOWN_FACTOR (1)
+#define DEF_FREQUENCY_UP_THRESHOLD (55)
+#define DEF_SAMPLING_DOWN_FACTOR (5)
#define MAX_SAMPLING_DOWN_FACTOR (100000)
-#define MICRO_FREQUENCY_UP_THRESHOLD (95)
+#define MICRO_FREQUENCY_UP_THRESHOLD (63)
#define MICRO_FREQUENCY_MIN_SAMPLE_RATE (10000)
#define MIN_FREQUENCY_UP_THRESHOLD (1)
#define MAX_FREQUENCY_UP_THRESHOLD (100)

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linux-tkg/linux-tkg-patches/5.7/0011-ZFS-fix.patch
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From 1e010beda2896bdf3082fb37a3e49f8ce20e04d8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Thalheim?= <joerg@thalheim.io>
Date: Thu, 2 May 2019 05:28:08 +0100
Subject: [PATCH] x86/fpu: Export kernel_fpu_{begin,end}() with
EXPORT_SYMBOL_GPL
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
We need these symbols in zfs as the fpu implementation breaks userspace:
https://github.com/zfsonlinux/zfs/issues/9346
Signed-off-by: Jörg Thalheim <joerg@thalheim.io>
---
arch/x86/kernel/fpu/core.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c
index 12c70840980e..352538b3bb5d 100644
--- a/arch/x86/kernel/fpu/core.c
+++ b/arch/x86/kernel/fpu/core.c
@@ -102,7 +102,7 @@ void kernel_fpu_begin(void)
}
__cpu_invalidate_fpregs_state();
}
-EXPORT_SYMBOL_GPL(kernel_fpu_begin);
+EXPORT_SYMBOL(kernel_fpu_begin);
void kernel_fpu_end(void)
{
@@ -111,7 +111,7 @@ void kernel_fpu_end(void)
this_cpu_write(in_kernel_fpu, false);
preempt_enable();
}
-EXPORT_SYMBOL_GPL(kernel_fpu_end);
+EXPORT_SYMBOL(kernel_fpu_end);
/*
* Save the FPU state (mark it for reload if necessary):
--
2.23.0

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linux-tkg/linux-tkg-patches/5.7/0012-misc-additions.patch
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diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig
index 0840d27381ea..73aba9a31064 100644
--- a/drivers/tty/Kconfig
+++ b/drivers/tty/Kconfig
@@ -75,6 +75,19 @@ config VT_CONSOLE_SLEEP
def_bool y
depends on VT_CONSOLE && PM_SLEEP
+config NR_TTY_DEVICES
+ int "Maximum tty device number"
+ depends on VT
+ range 12 63
+ default 63
+ ---help---
+ This option is used to change the number of tty devices in /dev.
+ The default value is 63. The lowest number you can set is 12,
+ 63 is also the upper limit so we don't overrun the serial
+ consoles.
+
+ If unsure, say 63.
+
config HW_CONSOLE
bool
depends on VT && !UML
diff --git a/include/uapi/linux/vt.h b/include/uapi/linux/vt.h
index e9d39c48520a..3bceead8da40 100644
--- a/include/uapi/linux/vt.h
+++ b/include/uapi/linux/vt.h
@@ -3,12 +3,25 @@
#define _UAPI_LINUX_VT_H
+/*
+ * We will make this definition solely for the purpose of making packages
+ * such as splashutils build, because they can not understand that
+ * NR_TTY_DEVICES is defined in the kernel configuration.
+ */
+#ifndef CONFIG_NR_TTY_DEVICES
+#define CONFIG_NR_TTY_DEVICES 63
+#endif
+
/*
* These constants are also useful for user-level apps (e.g., VC
* resizing).
*/
#define MIN_NR_CONSOLES 1 /* must be at least 1 */
-#define MAX_NR_CONSOLES 63 /* serial lines start at 64 */
+/*
+ * NR_TTY_DEVICES:
+ * Value MUST be at least 12 and must never be higher then 63
+ */
+#define MAX_NR_CONSOLES CONFIG_NR_TTY_DEVICES /* serial lines start above this */
/* Note: the ioctl VT_GETSTATE does not work for
consoles 16 and higher (since it returns a short) */

156
linux-tkg/linux-tkg-patches/5.8/0001-add-sysctl-to-disallow-unprivileged-CLONE_NEWUSER-by.patch
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From 5ec2dd3a095442ec1a21d86042a4994f2ba24e63 Mon Sep 17 00:00:00 2001
Message-Id: <5ec2dd3a095442ec1a21d86042a4994f2ba24e63.1512651251.git.jan.steffens@gmail.com>
From: Serge Hallyn <serge.hallyn@canonical.com>
Date: Fri, 31 May 2013 19:12:12 +0100
Subject: [PATCH] add sysctl to disallow unprivileged CLONE_NEWUSER by default
Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
[bwh: Remove unneeded binary sysctl bits]
Signed-off-by: Daniel Micay <danielmicay@gmail.com>
---
kernel/fork.c | 15 +++++++++++++++
kernel/sysctl.c | 12 ++++++++++++
kernel/user_namespace.c | 3 +++
3 files changed, 30 insertions(+)
diff --git a/kernel/fork.c b/kernel/fork.c
index 07cc743698d3668e..4011d68a8ff9305c 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -102,6 +102,11 @@
#define CREATE_TRACE_POINTS
#include <trace/events/task.h>
+#ifdef CONFIG_USER_NS
+extern int unprivileged_userns_clone;
+#else
+#define unprivileged_userns_clone 0
+#endif
/*
* Minimum number of threads to boot the kernel
@@ -1555,6 +1560,10 @@ static __latent_entropy struct task_struct *copy_process(
if ((clone_flags & (CLONE_NEWUSER|CLONE_FS)) == (CLONE_NEWUSER|CLONE_FS))
return ERR_PTR(-EINVAL);
+ if ((clone_flags & CLONE_NEWUSER) && !unprivileged_userns_clone)
+ if (!capable(CAP_SYS_ADMIN))
+ return ERR_PTR(-EPERM);
+
/*
* Thread groups must share signals as well, and detached threads
* can only be started up within the thread group.
@@ -2348,6 +2357,12 @@ SYSCALL_DEFINE1(unshare, unsigned long, unshare_flags)
if (unshare_flags & CLONE_NEWNS)
unshare_flags |= CLONE_FS;
+ if ((unshare_flags & CLONE_NEWUSER) && !unprivileged_userns_clone) {
+ err = -EPERM;
+ if (!capable(CAP_SYS_ADMIN))
+ goto bad_unshare_out;
+ }
+
err = check_unshare_flags(unshare_flags);
if (err)
goto bad_unshare_out;
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index b86520ed3fb60fbf..f7dab3760839f1a1 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -105,6 +105,9 @@ extern int core_uses_pid;
#if defined(CONFIG_SYSCTL)
+#ifdef CONFIG_USER_NS
+extern int unprivileged_userns_clone;
+#endif
/* Constants used for minimum and maximum */
#ifdef CONFIG_LOCKUP_DETECTOR
static int sixty = 60;
@@ -513,6 +516,15 @@ static struct ctl_table kern_table[] = {
.proc_handler = proc_dointvec,
},
#endif
+#ifdef CONFIG_USER_NS
+ {
+ .procname = "unprivileged_userns_clone",
+ .data = &unprivileged_userns_clone,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+#endif
#ifdef CONFIG_PROC_SYSCTL
{
.procname = "tainted",
diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c
index c490f1e4313b998a..dd03bd39d7bf194d 100644
--- a/kernel/user_namespace.c
+++ b/kernel/user_namespace.c
@@ -24,6 +24,9 @@
#include <linux/projid.h>
#include <linux/fs_struct.h>
+/* sysctl */
+int unprivileged_userns_clone;
+
static struct kmem_cache *user_ns_cachep __read_mostly;
static DEFINE_MUTEX(userns_state_mutex);
--
2.15.1
From b5202296055dd333db4425120d3f93ef4e6a0573 Mon Sep 17 00:00:00 2001
From: "Jan Alexander Steffens (heftig)" <jan.steffens@gmail.com>
Date: Thu, 7 Dec 2017 13:50:48 +0100
Subject: ZEN: Add CONFIG for unprivileged_userns_clone
This way our default behavior continues to match the vanilla kernel.
---
init/Kconfig | 16 ++++++++++++++++
kernel/user_namespace.c | 4 ++++
2 files changed, 20 insertions(+)
diff --git a/init/Kconfig b/init/Kconfig
index 4592bf7997c0..f3df02990aff 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1004,6 +1004,22 @@ config USER_NS
If unsure, say N.
+config USER_NS_UNPRIVILEGED
+ bool "Allow unprivileged users to create namespaces"
+ default y
+ depends on USER_NS
+ help
+ When disabled, unprivileged users will not be able to create
+ new namespaces. Allowing users to create their own namespaces
+ has been part of several recent local privilege escalation
+ exploits, so if you need user namespaces but are
+ paranoid^Wsecurity-conscious you want to disable this.
+
+ This setting can be overridden at runtime via the
+ kernel.unprivileged_userns_clone sysctl.
+
+ If unsure, say Y.
+
config PID_NS
bool "PID Namespaces"
default y
diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c
index 6b9dbc257e34..107b17f0d528 100644
--- a/kernel/user_namespace.c
+++ b/kernel/user_namespace.c
@@ -27,7 +27,11 @@
#include <linux/sort.h>
/* sysctl */
+#ifdef CONFIG_USER_NS_UNPRIVILEGED
+int unprivileged_userns_clone = 1;
+#else
int unprivileged_userns_clone;
+#endif
static struct kmem_cache *user_ns_cachep __read_mostly;
static DEFINE_MUTEX(userns_state_mutex);

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linux-tkg/linux-tkg-patches/5.8/0002-clear-patches.patch
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Arjan van de Ven <arjan@linux.intel.com>
Date: Mon, 14 Mar 2016 11:10:58 -0600
Subject: [PATCH] pci pme wakeups
Reduce wakeups for PME checks, which are a workaround for miswired
boards (sadly, too many of them) in laptops.
---
drivers/pci/pci.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index c9338f9..6974fbf 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -62,7 +62,7 @@ struct pci_pme_device {
struct pci_dev *dev;
};
-#define PME_TIMEOUT 1000 /* How long between PME checks */
+#define PME_TIMEOUT 4000 /* How long between PME checks */
static void pci_dev_d3_sleep(struct pci_dev *dev)
{
--
https://clearlinux.org
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Arjan van de Ven <arjan@linux.intel.com>
Date: Sat, 19 Mar 2016 21:32:19 -0400
Subject: [PATCH] intel_idle: tweak cpuidle cstates
Increase target_residency in cpuidle cstate
Tune intel_idle to be a bit less agressive;
Clear linux is cleaner in hygiene (wakupes) than the average linux,
so we can afford changing these in a way that increases
performance while keeping power efficiency
---
drivers/idle/intel_idle.c | 44 +++++++++++++++++++--------------------
1 file changed, 22 insertions(+), 22 deletions(-)
diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c
index f449584..c994d24 100644
--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -531,7 +531,7 @@ static struct cpuidle_state hsw_cstates[] __initdata = {
.desc = "MWAIT 0x01",
.flags = MWAIT2flg(0x01) | CPUIDLE_FLAG_ALWAYS_ENABLE,
.exit_latency = 10,
- .target_residency = 20,
+ .target_residency = 120,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -539,7 +539,7 @@ static struct cpuidle_state hsw_cstates[] __initdata = {
.desc = "MWAIT 0x10",
.flags = MWAIT2flg(0x10) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 33,
- .target_residency = 100,
+ .target_residency = 900,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -547,7 +547,7 @@ static struct cpuidle_state hsw_cstates[] __initdata = {
.desc = "MWAIT 0x20",
.flags = MWAIT2flg(0x20) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 133,
- .target_residency = 400,
+ .target_residency = 1000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -555,7 +555,7 @@ static struct cpuidle_state hsw_cstates[] __initdata = {
.desc = "MWAIT 0x32",
.flags = MWAIT2flg(0x32) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 166,
- .target_residency = 500,
+ .target_residency = 1500,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -563,7 +563,7 @@ static struct cpuidle_state hsw_cstates[] __initdata = {
.desc = "MWAIT 0x40",
.flags = MWAIT2flg(0x40) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 300,
- .target_residency = 900,
+ .target_residency = 2000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -571,7 +571,7 @@ static struct cpuidle_state hsw_cstates[] __initdata = {
.desc = "MWAIT 0x50",
.flags = MWAIT2flg(0x50) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 600,
- .target_residency = 1800,
+ .target_residency = 5000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -579,7 +579,7 @@ static struct cpuidle_state hsw_cstates[] __initdata = {
.desc = "MWAIT 0x60",
.flags = MWAIT2flg(0x60) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 2600,
- .target_residency = 7700,
+ .target_residency = 9000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -599,7 +599,7 @@ static struct cpuidle_state bdw_cstates[] __initdata = {
.desc = "MWAIT 0x01",
.flags = MWAIT2flg(0x01) | CPUIDLE_FLAG_ALWAYS_ENABLE,
.exit_latency = 10,
- .target_residency = 20,
+ .target_residency = 120,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -607,7 +607,7 @@ static struct cpuidle_state bdw_cstates[] __initdata = {
.desc = "MWAIT 0x10",
.flags = MWAIT2flg(0x10) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 40,
- .target_residency = 100,
+ .target_residency = 1000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -615,7 +615,7 @@ static struct cpuidle_state bdw_cstates[] __initdata = {
.desc = "MWAIT 0x20",
.flags = MWAIT2flg(0x20) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 133,
- .target_residency = 400,
+ .target_residency = 1000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -623,7 +623,7 @@ static struct cpuidle_state bdw_cstates[] __initdata = {
.desc = "MWAIT 0x32",
.flags = MWAIT2flg(0x32) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 166,
- .target_residency = 500,
+ .target_residency = 2000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -631,7 +631,7 @@ static struct cpuidle_state bdw_cstates[] __initdata = {
.desc = "MWAIT 0x40",
.flags = MWAIT2flg(0x40) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 300,
- .target_residency = 900,
+ .target_residency = 4000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -639,7 +639,7 @@ static struct cpuidle_state bdw_cstates[] __initdata = {
.desc = "MWAIT 0x50",
.flags = MWAIT2flg(0x50) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 600,
- .target_residency = 1800,
+ .target_residency = 7000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -647,7 +647,7 @@ static struct cpuidle_state bdw_cstates[] __initdata = {
.desc = "MWAIT 0x60",
.flags = MWAIT2flg(0x60) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 2600,
- .target_residency = 7700,
+ .target_residency = 9000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -668,7 +668,7 @@ static struct cpuidle_state skl_cstates[] __initdata = {
.desc = "MWAIT 0x01",
.flags = MWAIT2flg(0x01) | CPUIDLE_FLAG_ALWAYS_ENABLE,
.exit_latency = 10,
- .target_residency = 20,
+ .target_residency = 120,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -676,7 +676,7 @@ static struct cpuidle_state skl_cstates[] __initdata = {
.desc = "MWAIT 0x10",
.flags = MWAIT2flg(0x10) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 70,
- .target_residency = 100,
+ .target_residency = 1000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -684,7 +684,7 @@ static struct cpuidle_state skl_cstates[] __initdata = {
.desc = "MWAIT 0x20",
.flags = MWAIT2flg(0x20) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 85,
- .target_residency = 200,
+ .target_residency = 600,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -692,7 +692,7 @@ static struct cpuidle_state skl_cstates[] __initdata = {
.desc = "MWAIT 0x33",
.flags = MWAIT2flg(0x33) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 124,
- .target_residency = 800,
+ .target_residency = 3000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -700,7 +700,7 @@ static struct cpuidle_state skl_cstates[] __initdata = {
.desc = "MWAIT 0x40",
.flags = MWAIT2flg(0x40) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 200,
- .target_residency = 800,
+ .target_residency = 3200,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -708,7 +708,7 @@ static struct cpuidle_state skl_cstates[] __initdata = {
.desc = "MWAIT 0x50",
.flags = MWAIT2flg(0x50) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 480,
- .target_residency = 5000,
+ .target_residency = 9000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -716,7 +716,7 @@ static struct cpuidle_state skl_cstates[] __initdata = {
.desc = "MWAIT 0x60",
.flags = MWAIT2flg(0x60) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 890,
- .target_residency = 5000,
+ .target_residency = 9000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -737,7 +737,7 @@ static struct cpuidle_state skx_cstates[] __initdata = {
.desc = "MWAIT 0x01",
.flags = MWAIT2flg(0x01) | CPUIDLE_FLAG_ALWAYS_ENABLE,
.exit_latency = 10,
- .target_residency = 20,
+ .target_residency = 300,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
--
https://clearlinux.org
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Arjan van de Ven <arjan@linux.intel.com>
Date: Fri, 6 Jan 2017 15:34:09 +0000
Subject: [PATCH] ipv4/tcp: allow the memory tuning for tcp to go a little
bigger than default
---
net/ipv4/tcp.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 30c1142..4345075 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -4201,8 +4201,8 @@ void __init tcp_init(void)
tcp_init_mem();
/* Set per-socket limits to no more than 1/128 the pressure threshold */
limit = nr_free_buffer_pages() << (PAGE_SHIFT - 7);
- max_wshare = min(4UL*1024*1024, limit);
- max_rshare = min(6UL*1024*1024, limit);
+ max_wshare = min(16UL*1024*1024, limit);
+ max_rshare = min(16UL*1024*1024, limit);
init_net.ipv4.sysctl_tcp_wmem[0] = SK_MEM_QUANTUM;
init_net.ipv4.sysctl_tcp_wmem[1] = 16*1024;
--
https://clearlinux.org
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Arjan van de Ven <arjan@linux.intel.com>
Date: Sun, 18 Feb 2018 23:35:41 +0000
Subject: [PATCH] locking: rwsem: spin faster
tweak rwsem owner spinning a bit
---
kernel/locking/rwsem.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/kernel/locking/rwsem.c b/kernel/locking/rwsem.c
index f11b9bd..1bbfcc1 100644
--- a/kernel/locking/rwsem.c
+++ b/kernel/locking/rwsem.c
@@ -717,6 +717,7 @@ rwsem_spin_on_owner(struct rw_semaphore *sem, unsigned long nonspinnable)
struct task_struct *new, *owner;
unsigned long flags, new_flags;
enum owner_state state;
+ int i = 0;
owner = rwsem_owner_flags(sem, &flags);
state = rwsem_owner_state(owner, flags, nonspinnable);
@@ -750,7 +751,8 @@ rwsem_spin_on_owner(struct rw_semaphore *sem, unsigned long nonspinnable)
break;
}
- cpu_relax();
+ if (i++ > 1000)
+ cpu_relax();
}
rcu_read_unlock();
--
https://clearlinux.org
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Arjan van de Ven <arjan@linux.intel.com>
Date: Thu, 2 Jun 2016 23:36:32 -0500
Subject: [PATCH] initialize ata before graphics
ATA init is the long pole in the boot process, and its asynchronous.
move the graphics init after it so that ata and graphics initialize
in parallel
---
drivers/Makefile | 15 ++++++++-------
1 file changed, 8 insertions(+), 7 deletions(-)
diff --git a/drivers/Makefile b/drivers/Makefile
index c0cd1b9..af1e2fb 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -59,15 +59,8 @@ obj-y += char/
# iommu/ comes before gpu as gpu are using iommu controllers
obj-y += iommu/
-# gpu/ comes after char for AGP vs DRM startup and after iommu
-obj-y += gpu/
-
obj-$(CONFIG_CONNECTOR) += connector/
-# i810fb and intelfb depend on char/agp/
-obj-$(CONFIG_FB_I810) += video/fbdev/i810/
-obj-$(CONFIG_FB_INTEL) += video/fbdev/intelfb/
-
obj-$(CONFIG_PARPORT) += parport/
obj-$(CONFIG_NVM) += lightnvm/
obj-y += base/ block/ misc/ mfd/ nfc/
@@ -80,6 +73,14 @@ obj-$(CONFIG_IDE) += ide/
obj-y += scsi/
obj-y += nvme/
obj-$(CONFIG_ATA) += ata/
+
+# gpu/ comes after char for AGP vs DRM startup and after iommu
+obj-y += gpu/
+
+# i810fb and intelfb depend on char/agp/
+obj-$(CONFIG_FB_I810) += video/fbdev/i810/
+obj-$(CONFIG_FB_INTEL) += video/fbdev/intelfb/
+
obj-$(CONFIG_TARGET_CORE) += target/
obj-$(CONFIG_MTD) += mtd/
obj-$(CONFIG_SPI) += spi/
--
https://clearlinux.org

708
linux-tkg/linux-tkg-patches/5.8/0003-glitched-base.patch
Unescape Escape View File

@ -0,0 +1,708 @@
From f7f49141a5dbe9c99d78196b58c44307fb2e6be3 Mon Sep 17 00:00:00 2001
From: Tk-Glitch <ti3nou@gmail.com>
Date: Wed, 4 Jul 2018 04:30:08 +0200
Subject: [PATCH 01/17] glitched
---
scripts/mkcompile_h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/scripts/mkcompile_h b/scripts/mkcompile_h
index baf3ab8d9d49..854e32e6aec7 100755
--- a/scripts/mkcompile_h
+++ b/scripts/mkcompile_h
@@ -41,8 +41,8 @@ else
fi
UTS_VERSION="#$VERSION"
-CONFIG_FLAGS=""
-if [ -n "$SMP" ] ; then CONFIG_FLAGS="SMP"; fi
+CONFIG_FLAGS="TKG"
+if [ -n "$SMP" ] ; then CONFIG_FLAGS="$CONFIG_FLAGS SMP"; fi
if [ -n "$PREEMPT" ] ; then CONFIG_FLAGS="$CONFIG_FLAGS PREEMPT"; fi
if [ -n "$PREEMPT_RT" ] ; then CONFIG_FLAGS="$CONFIG_FLAGS PREEMPT_RT"; fi
--
2.28.0
From c304f43d14e98d4bf1215fc10bc5012f554bdd8a Mon Sep 17 00:00:00 2001
From: Alexandre Frade <admfrade@gmail.com>
Date: Mon, 29 Jan 2018 16:59:22 +0000
Subject: [PATCH 02/17] dcache: cache_pressure = 50 decreases the rate at which
VFS caches are reclaimed
Signed-off-by: Alexandre Frade <admfrade@gmail.com>
---
fs/dcache.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/dcache.c b/fs/dcache.c
index 361ea7ab30ea..0c5cf69b241a 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -71,7 +71,7 @@
* If no ancestor relationship:
* arbitrary, since it's serialized on rename_lock
*/
-int sysctl_vfs_cache_pressure __read_mostly = 100;
+int sysctl_vfs_cache_pressure __read_mostly = 50;
EXPORT_SYMBOL_GPL(sysctl_vfs_cache_pressure);
__cacheline_aligned_in_smp DEFINE_SEQLOCK(rename_lock);
--
2.28.0
From 28f32f59d9d55ac7ec3a20b79bdd02d2a0a5f7e1 Mon Sep 17 00:00:00 2001
From: Alexandre Frade <admfrade@gmail.com>
Date: Mon, 29 Jan 2018 18:29:13 +0000
Subject: [PATCH 03/17] sched/core: nr_migrate = 128 increases number of tasks
to iterate in a single balance run.
Signed-off-by: Alexandre Frade <admfrade@gmail.com>
---
kernel/sched/core.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index f788cd61df21..2bfbb4213707 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -59,7 +59,7 @@ const_debug unsigned int sysctl_sched_features =
* Number of tasks to iterate in a single balance run.
* Limited because this is done with IRQs disabled.
*/
-const_debug unsigned int sysctl_sched_nr_migrate = 32;
+const_debug unsigned int sysctl_sched_nr_migrate = 128;
/*
* period over which we measure -rt task CPU usage in us.
@@ -71,9 +71,9 @@ __read_mostly int scheduler_running;
/*
* part of the period that we allow rt tasks to run in us.
- * default: 0.95s
+ * XanMod default: 0.98s
*/
-int sysctl_sched_rt_runtime = 950000;
+int sysctl_sched_rt_runtime = 980000;
/*
* __task_rq_lock - lock the rq @p resides on.
--
2.28.0
From acc49f33a10f61dc66c423888cbb883ba46710e4 Mon Sep 17 00:00:00 2001
From: Alexandre Frade <admfrade@gmail.com>
Date: Mon, 29 Jan 2018 17:41:29 +0000
Subject: [PATCH 04/17] scripts: disable the localversion "+" tag of a git repo
Signed-off-by: Alexandre Frade <admfrade@gmail.com>
---
scripts/setlocalversion | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/scripts/setlocalversion b/scripts/setlocalversion
index 20f2efd57b11..0552d8b9f582 100755
--- a/scripts/setlocalversion
+++ b/scripts/setlocalversion
@@ -54,7 +54,7 @@ scm_version()
# If only the short version is requested, don't bother
# running further git commands
if $short; then
- echo "+"
+ # echo "+"
return
fi
# If we are past a tagged commit (like
--
2.28.0
From 61fcb33fb0de8bc0f060e0a1ada38ed149217f4d Mon Sep 17 00:00:00 2001
From: Oleksandr Natalenko <oleksandr@redhat.com>
Date: Wed, 11 Dec 2019 11:46:19 +0100
Subject: [PATCH 05/17] init/Kconfig: enable -O3 for all arches
Building a kernel with -O3 may help in hunting bugs like [1] and thus
using this switch should not be restricted to one specific arch only.
With that, lets expose it for everyone.
[1] https://lore.kernel.org/lkml/673b885183fb64f1cbb3ed2387524077@natalenko.name/
Signed-off-by: Oleksandr Natalenko <oleksandr@redhat.com>
---
init/Kconfig | 1 -
1 file changed, 1 deletion(-)
diff --git a/init/Kconfig b/init/Kconfig
index 0498af567f70..3ae8678e1145 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1278,7 +1278,6 @@ config CC_OPTIMIZE_FOR_PERFORMANCE
config CC_OPTIMIZE_FOR_PERFORMANCE_O3
bool "Optimize more for performance (-O3)"
- depends on ARC
help
Choosing this option will pass "-O3" to your compiler to optimize
the kernel yet more for performance.
--
2.28.0
From 360c6833e07cc9fdef5746f6bc45bdbc7212288d Mon Sep 17 00:00:00 2001
From: "Jan Alexander Steffens (heftig)" <jan.steffens@gmail.com>
Date: Fri, 26 Oct 2018 11:22:33 +0100
Subject: [PATCH 06/17] infiniband: Fix __read_overflow2 error with -O3
inlining
---
drivers/infiniband/core/addr.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/infiniband/core/addr.c b/drivers/infiniband/core/addr.c
index 3a98439bba83..6efc4f907f58 100644
--- a/drivers/infiniband/core/addr.c
+++ b/drivers/infiniband/core/addr.c
@@ -820,6 +820,7 @@ int rdma_addr_find_l2_eth_by_grh(const union ib_gid *sgid,
union {
struct sockaddr_in _sockaddr_in;
struct sockaddr_in6 _sockaddr_in6;
+ struct sockaddr_ib _sockaddr_ib;
} sgid_addr, dgid_addr;
int ret;
--
2.28.0
From f85ed068b4d0e6c31edce8574a95757a60e58b87 Mon Sep 17 00:00:00 2001
From: Etienne Juvigny <Ti3noU@gmail.com>
Date: Mon, 3 Sep 2018 17:36:25 +0200
Subject: [PATCH 07/17] Zenify & stuff
---
init/Kconfig | 32 ++++++++++++++++++++++++++++++++
kernel/sched/fair.c | 25 +++++++++++++++++++++++++
mm/page-writeback.c | 8 ++++++++
3 files changed, 65 insertions(+)
diff --git a/init/Kconfig b/init/Kconfig
index 3ae8678e1145..da708eed0f1e 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -92,6 +92,38 @@ config THREAD_INFO_IN_TASK
menu "General setup"
+config ZENIFY
+ bool "A selection of patches from Zen/Liquorix kernel and additional tweaks for a better gaming experience"
+ default y
+ help
+ Tunes the kernel for responsiveness at the cost of throughput and power usage.
+
+ --- Virtual Memory Subsystem ---------------------------
+
+ Mem dirty before bg writeback..: 10 % -> 20 %
+ Mem dirty before sync writeback: 20 % -> 50 %
+
+ --- Block Layer ----------------------------------------
+
+ Queue depth...............: 128 -> 512
+ Default MQ scheduler......: mq-deadline -> bfq
+
+ --- CFS CPU Scheduler ----------------------------------
+
+ Scheduling latency.............: 6 -> 3 ms
+ Minimal granularity............: 0.75 -> 0.3 ms
+ Wakeup granularity.............: 1 -> 0.5 ms
+ CPU migration cost.............: 0.5 -> 0.25 ms
+ Bandwidth slice size...........: 5 -> 3 ms
+ Ondemand fine upscaling limit..: 95 % -> 85 %
+
+ --- MuQSS CPU Scheduler --------------------------------
+
+ Scheduling interval............: 6 -> 3 ms
+ ISO task max realtime use......: 70 % -> 25 %
+ Ondemand coarse upscaling limit: 80 % -> 45 %
+ Ondemand fine upscaling limit..: 95 % -> 45 %
+
config BROKEN
bool
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 6b3b59cc51d6..2a0072192c3d 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -37,8 +37,13 @@
*
* (default: 6ms * (1 + ilog(ncpus)), units: nanoseconds)
*/
+#ifdef CONFIG_ZENIFY
+unsigned int sysctl_sched_latency = 3000000ULL;
+static unsigned int normalized_sysctl_sched_latency = 3000000ULL;
+#else
unsigned int sysctl_sched_latency = 6000000ULL;
static unsigned int normalized_sysctl_sched_latency = 6000000ULL;
+#endif
/*
* The initial- and re-scaling of tunables is configurable
@@ -58,13 +63,22 @@ enum sched_tunable_scaling sysctl_sched_tunable_scaling = SCHED_TUNABLESCALING_L
*
* (default: 0.75 msec * (1 + ilog(ncpus)), units: nanoseconds)
*/
+#ifdef CONFIG_ZENIFY
+unsigned int sysctl_sched_min_granularity = 300000ULL;
+static unsigned int normalized_sysctl_sched_min_granularity = 300000ULL;
+#else
unsigned int sysctl_sched_min_granularity = 750000ULL;
static unsigned int normalized_sysctl_sched_min_granularity = 750000ULL;
+#endif
/*
* This value is kept at sysctl_sched_latency/sysctl_sched_min_granularity
*/
+#ifdef CONFIG_ZENIFY
+static unsigned int sched_nr_latency = 10;
+#else
static unsigned int sched_nr_latency = 8;
+#endif
/*
* After fork, child runs first. If set to 0 (default) then
@@ -81,10 +95,17 @@ unsigned int sysctl_sched_child_runs_first __read_mostly;
*
* (default: 1 msec * (1 + ilog(ncpus)), units: nanoseconds)
*/
+#ifdef CONFIG_ZENIFY
+unsigned int sysctl_sched_wakeup_granularity = 500000UL;
+static unsigned int normalized_sysctl_sched_wakeup_granularity = 500000UL;
+
+const_debug unsigned int sysctl_sched_migration_cost = 50000UL;
+#else
unsigned int sysctl_sched_wakeup_granularity = 1000000UL;
static unsigned int normalized_sysctl_sched_wakeup_granularity = 1000000UL;
const_debug unsigned int sysctl_sched_migration_cost = 500000UL;
+#endif
int sched_thermal_decay_shift;
static int __init setup_sched_thermal_decay_shift(char *str)
@@ -128,8 +149,12 @@ int __weak arch_asym_cpu_priority(int cpu)
*
* (default: 5 msec, units: microseconds)
*/
+#ifdef CONFIG_ZENIFY
+unsigned int sysctl_sched_cfs_bandwidth_slice = 3000UL;
+#else
unsigned int sysctl_sched_cfs_bandwidth_slice = 5000UL;
#endif
+#endif
static inline void update_load_add(struct load_weight *lw, unsigned long inc)
{
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 28b3e7a67565..01a1aef2b9b1 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -71,7 +71,11 @@ static long ratelimit_pages = 32;
/*
* Start background writeback (via writeback threads) at this percentage
*/
+#ifdef CONFIG_ZENIFY
+int dirty_background_ratio = 20;
+#else
int dirty_background_ratio = 10;
+#endif
/*
* dirty_background_bytes starts at 0 (disabled) so that it is a function of
@@ -88,7 +92,11 @@ int vm_highmem_is_dirtyable;
/*
* The generator of dirty data starts writeback at this percentage
*/
+#ifdef CONFIG_ZENIFY
+int vm_dirty_ratio = 50;
+#else
int vm_dirty_ratio = 20;
+#endif
/*
* vm_dirty_bytes starts at 0 (disabled) so that it is a function of
--
2.28.0
From e92e67143385cf285851e12aa8b7f083dd38dd24 Mon Sep 17 00:00:00 2001
From: Steven Barrett <damentz@liquorix.net>
Date: Sun, 16 Jan 2011 18:57:32 -0600
Subject: [PATCH 08/17] ZEN: Allow TCP YeAH as default congestion control
4.4: In my tests YeAH dramatically slowed down transfers over a WLAN,
reducing throughput from ~65Mbps (CUBIC) to ~7MBps (YeAH) over 10
seconds (netperf TCP_STREAM) including long stalls.
Be careful when choosing this. ~heftig
---
net/ipv4/Kconfig | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig
index e64e59b536d3..bfb55ef7ebbe 100644
--- a/net/ipv4/Kconfig
+++ b/net/ipv4/Kconfig
@@ -691,6 +691,9 @@ choice
config DEFAULT_VEGAS
bool "Vegas" if TCP_CONG_VEGAS=y
+ config DEFAULT_YEAH
+ bool "YeAH" if TCP_CONG_YEAH=y
+
config DEFAULT_VENO
bool "Veno" if TCP_CONG_VENO=y
@@ -724,6 +727,7 @@ config DEFAULT_TCP_CONG
default "htcp" if DEFAULT_HTCP
default "hybla" if DEFAULT_HYBLA
default "vegas" if DEFAULT_VEGAS
+ default "yeah" if DEFAULT_YEAH
default "westwood" if DEFAULT_WESTWOOD
default "veno" if DEFAULT_VENO
default "reno" if DEFAULT_RENO
--
2.28.0
From 76dbe7477bfde1b5e8bf29a71b5af7ab2be9b98e Mon Sep 17 00:00:00 2001
From: Steven Barrett <steven@liquorix.net>
Date: Wed, 28 Nov 2018 19:01:27 -0600
Subject: [PATCH 09/17] zen: Use [defer+madvise] as default khugepaged defrag
strategy
For some reason, the default strategy to respond to THP fault fallbacks
is still just madvise, meaning stall if the program wants transparent
hugepages, but don't trigger a background reclaim / compaction if THP
begins to fail allocations. This creates a snowball affect where we
still use the THP code paths, but we almost always fail once a system
has been active and busy for a while.
The option "defer" was created for interactive systems where THP can
still improve performance. If we have to fallback to a regular page due
to an allocation failure or anything else, we will trigger a background
reclaim and compaction so future THP attempts succeed and previous
attempts eventually have their smaller pages combined without stalling
running applications.
We still want madvise to stall applications that explicitely want THP,
so defer+madvise _does_ make a ton of sense. Make it the default for
interactive systems, especially if the kernel maintainer left
transparent hugepages on "always".
Reasoning and details in the original patch: https://lwn.net/Articles/711248/
---
mm/huge_memory.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 74300e337c3c..9277f22c10a7 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -53,7 +53,11 @@ unsigned long transparent_hugepage_flags __read_mostly =
#ifdef CONFIG_TRANSPARENT_HUGEPAGE_MADVISE
(1<<TRANSPARENT_HUGEPAGE_REQ_MADV_FLAG)|
#endif
+#ifdef CONFIG_ZENIFY
+ (1<<TRANSPARENT_HUGEPAGE_DEFRAG_KSWAPD_OR_MADV_FLAG)|
+#else
(1<<TRANSPARENT_HUGEPAGE_DEFRAG_REQ_MADV_FLAG)|
+#endif
(1<<TRANSPARENT_HUGEPAGE_DEFRAG_KHUGEPAGED_FLAG)|
(1<<TRANSPARENT_HUGEPAGE_USE_ZERO_PAGE_FLAG);
--
2.28.0
From 2b65a1329cb220b43c19c4d0de5833fae9e2b22d Mon Sep 17 00:00:00 2001
From: Alexandre Frade <admfrade@gmail.com>
Date: Wed, 24 Oct 2018 16:58:52 -0300
Subject: [PATCH 10/17] net/sched: allow configuring cake qdisc as default
Signed-off-by: Alexandre Frade <admfrade@gmail.com>
---
net/sched/Kconfig | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/net/sched/Kconfig b/net/sched/Kconfig
index 84badf00647e..6a922bca9f39 100644
--- a/net/sched/Kconfig
+++ b/net/sched/Kconfig
@@ -471,6 +471,9 @@ choice
config DEFAULT_SFQ
bool "Stochastic Fair Queue" if NET_SCH_SFQ
+ config DEFAULT_CAKE
+ bool "Common Applications Kept Enhanced" if NET_SCH_CAKE
+
config DEFAULT_PFIFO_FAST
bool "Priority FIFO Fast"
endchoice
@@ -481,6 +484,7 @@ config DEFAULT_NET_SCH
default "fq" if DEFAULT_FQ
default "fq_codel" if DEFAULT_FQ_CODEL
default "sfq" if DEFAULT_SFQ
+ default "cake" if DEFAULT_CAKE
default "pfifo_fast"
endif
--
2.28.0
From 816ee502759e954304693813bd03d94986b28dba Mon Sep 17 00:00:00 2001
From: Tk-Glitch <ti3nou@gmail.com>
Date: Mon, 18 Feb 2019 17:40:57 +0100
Subject: [PATCH 11/17] mm: Set watermark_scale_factor to 200 (from 10)
Multiple users have reported it's helping reducing/eliminating stuttering
with DXVK.
---
mm/page_alloc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 898ff44f2c7b..e72074034793 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -330,7 +330,7 @@ int watermark_boost_factor __read_mostly;
#else
int watermark_boost_factor __read_mostly = 15000;
#endif
-int watermark_scale_factor = 10;
+int watermark_scale_factor = 200;
static unsigned long nr_kernel_pages __initdata;
static unsigned long nr_all_pages __initdata;
--
2.28.0
From 90240bcd90a568878738e66c0d45bed3e38e347b Mon Sep 17 00:00:00 2001
From: Tk-Glitch <ti3nou@gmail.com>
Date: Fri, 19 Apr 2019 12:33:38 +0200
Subject: [PATCH 12/17] Set vm.max_map_count to 262144 by default
The value is still pretty low, and AMD64-ABI and ELF extended numbering
supports that, so we should be fine on modern x86 systems.
This fixes crashes in some applications using more than 65535 vmas (also
affects some windows games running in wine, such as Star Citizen).
---
include/linux/mm.h | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index bc05c3588aa3..b0cefe94920d 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -190,8 +190,7 @@ static inline void __mm_zero_struct_page(struct page *page)
* not a hard limit any more. Although some userspace tools can be surprised by
* that.
*/
-#define MAPCOUNT_ELF_CORE_MARGIN (5)
-#define DEFAULT_MAX_MAP_COUNT (USHRT_MAX - MAPCOUNT_ELF_CORE_MARGIN)
+#define DEFAULT_MAX_MAP_COUNT (262144)
extern int sysctl_max_map_count;
--
2.28.0
From 3a34034dba5efe91bcec491efe8c66e8087f509b Mon Sep 17 00:00:00 2001
From: Tk-Glitch <ti3nou@gmail.com>
Date: Mon, 27 Jul 2020 00:19:18 +0200
Subject: [PATCH 13/17] mm: bump DEFAULT_MAX_MAP_COUNT
Some games such as Detroit: Become Human tend to be very crash prone with
lower values.
---
include/linux/mm.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index b0cefe94920d..890165099b07 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -190,7 +190,7 @@ static inline void __mm_zero_struct_page(struct page *page)
* not a hard limit any more. Although some userspace tools can be surprised by
* that.
*/
-#define DEFAULT_MAX_MAP_COUNT (262144)
+#define DEFAULT_MAX_MAP_COUNT (524288)
extern int sysctl_max_map_count;
--
2.28.0
From 977812938da7c7226415778c340832141d9278b7 Mon Sep 17 00:00:00 2001
From: Alexandre Frade <admfrade@gmail.com>
Date: Mon, 25 Nov 2019 15:13:06 -0300
Subject: [PATCH 14/17] elevator: set default scheduler to bfq for blk-mq
Signed-off-by: Alexandre Frade <admfrade@gmail.com>
---
block/elevator.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/block/elevator.c b/block/elevator.c
index 4eab3d70e880..79669aa39d79 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -623,15 +623,15 @@ static inline bool elv_support_iosched(struct request_queue *q)
}
/*
- * For single queue devices, default to using mq-deadline. If we have multiple
- * queues or mq-deadline is not available, default to "none".
+ * For single queue devices, default to using bfq. If we have multiple
+ * queues or bfq is not available, default to "none".
*/
static struct elevator_type *elevator_get_default(struct request_queue *q)
{
if (q->nr_hw_queues != 1)
return NULL;
- return elevator_get(q, "mq-deadline", false);
+ return elevator_get(q, "bfq", false);
}
/*
--
2.28.0
From e2111bc5989131c675659d40e0cc4f214df2f990 Mon Sep 17 00:00:00 2001
From: Alexandre Frade <admfrade@gmail.com>
Date: Fri, 10 May 2019 16:45:59 -0300
Subject: [PATCH 15/17] block: set rq_affinity = 2 for full multithreading I/O
requests
Signed-off-by: Alexandre Frade <admfrade@gmail.com>
---
include/linux/blkdev.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 28efe374a2e1..d4e5d35d2ece 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -624,7 +624,8 @@ struct request_queue {
#define QUEUE_FLAG_RQ_ALLOC_TIME 27 /* record rq->alloc_time_ns */
#define QUEUE_FLAG_MQ_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \
- (1 << QUEUE_FLAG_SAME_COMP))
+ (1 << QUEUE_FLAG_SAME_COMP) | \
+ (1 << QUEUE_FLAG_SAME_FORCE))
void blk_queue_flag_set(unsigned int flag, struct request_queue *q);
void blk_queue_flag_clear(unsigned int flag, struct request_queue *q);
--
2.28.0
From 3c229f434aca65c4ca61772bc03c3e0370817b92 Mon Sep 17 00:00:00 2001
From: Alexandre Frade <kernel@xanmod.org>
Date: Mon, 3 Aug 2020 17:05:04 +0000
Subject: [PATCH 16/17] mm: set 2 megabytes for address_space-level file
read-ahead pages size
Signed-off-by: Alexandre Frade <kernel@xanmod.org>
---
include/linux/pagemap.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index cf2468da68e9..007dea784451 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -655,7 +655,7 @@ int replace_page_cache_page(struct page *old, struct page *new, gfp_t gfp_mask);
void delete_from_page_cache_batch(struct address_space *mapping,
struct pagevec *pvec);
-#define VM_READAHEAD_PAGES (SZ_128K / PAGE_SIZE)
+#define VM_READAHEAD_PAGES (SZ_2M / PAGE_SIZE)
void page_cache_sync_readahead(struct address_space *, struct file_ra_state *,
struct file *, pgoff_t index, unsigned long req_count);
--
2.28.0
From 716f41cf6631f3a85834dcb67b4ce99185b6387f Mon Sep 17 00:00:00 2001
From: Steven Barrett <steven@liquorix.net>
Date: Wed, 15 Jan 2020 20:43:56 -0600
Subject: [PATCH 17/17] ZEN: intel-pstate: Implement "enable" parameter
If intel-pstate is compiled into the kernel, it will preempt the loading
of acpi-cpufreq so you can take advantage of hardware p-states without
any friction.
However, intel-pstate is not completely superior to cpufreq's ondemand
for one reason. There's no concept of an up_threshold property.
In ondemand, up_threshold essentially reduces the maximum utilization to
compare against, allowing you to hit max frequencies and turbo boost
from a much lower core utilization.
With intel-pstate, you have the concept of minimum and maximum
performance, but no tunable that lets you define, maximum frequency
means 50% core utilization. For just this oversight, there's reasons
you may want ondemand.
Lets support setting "enable" in kernel boot parameters. This lets
kernel maintainers include "intel_pstate=disable" statically in the
static boot parameters, but let users of the kernel override this
selection.
---
Documentation/admin-guide/kernel-parameters.txt | 3 +++
drivers/cpufreq/intel_pstate.c | 2 ++
2 files changed, 5 insertions(+)
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index fb95fad81c79..3e92fee81e33 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -1857,6 +1857,9 @@
disable
Do not enable intel_pstate as the default
scaling driver for the supported processors
+ enable
+ Enable intel_pstate in-case "disable" was passed
+ previously in the kernel boot parameters
passive
Use intel_pstate as a scaling driver, but configure it
to work with generic cpufreq governors (instead of
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 36a469150ff9..aee891c9b78a 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -2845,6 +2845,8 @@ static int __init intel_pstate_setup(char *str)
pr_info("HWP disabled\n");
no_hwp = 1;
}
+ if (!strcmp(str, "enable"))
+ no_load = 0;
if (!strcmp(str, "force"))
force_load = 1;
if (!strcmp(str, "hwp_only"))
--
2.28.0

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@ -0,0 +1,72 @@
diff --git a/kernel/Kconfig.hz b/kernel/Kconfig.hz
index 2a202a846757..1d9c7ed79b11 100644
--- a/kernel/Kconfig.hz
+++ b/kernel/Kconfig.hz
@@ -4,7 +4,7 @@
choice
prompt "Timer frequency"
- default HZ_250
+ default HZ_500
help
Allows the configuration of the timer frequency. It is customary
to have the timer interrupt run at 1000 Hz but 100 Hz may be more
@@ -39,6 +39,13 @@ choice
on SMP and NUMA systems and exactly dividing by both PAL and
NTSC frame rates for video and multimedia work.
+ config HZ_500
+ bool "500 HZ"
+ help
+ 500 Hz is a balanced timer frequency. Provides fast interactivity
+ on desktops with great smoothness without increasing CPU power
+ consumption and sacrificing the battery life on laptops.
+
config HZ_1000
bool "1000 HZ"
help
@@ -52,6 +59,7 @@ config HZ
default 100 if HZ_100
default 250 if HZ_250
default 300 if HZ_300
+ default 500 if HZ_500
default 1000 if HZ_1000
config SCHED_HRTICK
diff --git a/kernel/Kconfig.hz b/kernel/Kconfig.hz
index 2a202a846757..1d9c7ed79b11 100644
--- a/kernel/Kconfig.hz
+++ b/kernel/Kconfig.hz
@@ -4,7 +4,7 @@
choice
prompt "Timer frequency"
- default HZ_500
+ default HZ_750
help
Allows the configuration of the timer frequency. It is customary
to have the timer interrupt run at 1000 Hz but 100 Hz may be more
@@ -46,6 +46,13 @@ choice
on desktops with great smoothness without increasing CPU power
consumption and sacrificing the battery life on laptops.
+ config HZ_750
+ bool "750 HZ"
+ help
+ 750 Hz is a good timer frequency for desktops. Provides fast
+ interactivity with great smoothness without sacrificing too
+ much throughput.
+
config HZ_1000
bool "1000 HZ"
help
@@ -60,6 +67,7 @@ config HZ
default 250 if HZ_250
default 300 if HZ_300
default 500 if HZ_500
+ default 750 if HZ_750
default 1000 if HZ_1000
config SCHED_HRTICK

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@ -0,0 +1,90 @@
From f7f49141a5dbe9c99d78196b58c44307fb2e6be3 Mon Sep 17 00:00:00 2001
From: Tk-Glitch <ti3nou@gmail.com>
Date: Wed, 4 Jul 2018 04:30:08 +0200
Subject: glitched - PDS
diff --git a/kernel/Kconfig.hz b/kernel/Kconfig.hz
index 2a202a846757..1d9c7ed79b11 100644
--- a/kernel/Kconfig.hz
+++ b/kernel/Kconfig.hz
@@ -4,7 +4,7 @@
choice
prompt "Timer frequency"
- default HZ_250
+ default HZ_500
help
Allows the configuration of the timer frequency. It is customary
to have the timer interrupt run at 1000 Hz but 100 Hz may be more
@@ -39,6 +39,13 @@ choice
on SMP and NUMA systems and exactly dividing by both PAL and
NTSC frame rates for video and multimedia work.
+ config HZ_500
+ bool "500 HZ"
+ help
+ 500 Hz is a balanced timer frequency. Provides fast interactivity
+ on desktops with great smoothness without increasing CPU power
+ consumption and sacrificing the battery life on laptops.
+
config HZ_1000
bool "1000 HZ"
help
@@ -52,6 +59,7 @@ config HZ
default 100 if HZ_100
default 250 if HZ_250
default 300 if HZ_300
+ default 500 if HZ_500
default 1000 if HZ_1000
config SCHED_HRTICK
diff --git a/kernel/Kconfig.hz b/kernel/Kconfig.hz
index 2a202a846757..1d9c7ed79b11 100644
--- a/kernel/Kconfig.hz
+++ b/kernel/Kconfig.hz
@@ -4,7 +4,7 @@
choice
prompt "Timer frequency"
- default HZ_500
+ default HZ_750
help
Allows the configuration of the timer frequency. It is customary
to have the timer interrupt run at 1000 Hz but 100 Hz may be more
@@ -46,6 +46,13 @@ choice
on desktops with great smoothness without increasing CPU power
consumption and sacrificing the battery life on laptops.
+ config HZ_750
+ bool "750 HZ"
+ help
+ 750 Hz is a good timer frequency for desktops. Provides fast
+ interactivity with great smoothness without sacrificing too
+ much throughput.
+
config HZ_1000
bool "1000 HZ"
help
@@ -60,6 +67,7 @@ config HZ
default 250 if HZ_250
default 300 if HZ_300
default 500 if HZ_500
+ default 750 if HZ_750
default 1000 if HZ_1000
config SCHED_HRTICK
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 9270a4370d54..30d01e647417 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -159,7 +159,7 @@ struct scan_control {
/*
* From 0 .. 100. Higher means more swappy.
*/
-int vm_swappiness = 60;
+int vm_swappiness = 20;
/*
* The total number of pages which are beyond the high watermark within all
* zones.

18
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@ -0,0 +1,18 @@
diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index 6b423eebfd5d..61e3271675d6 100644
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -21,10 +21,10 @@
#include "cpufreq_ondemand.h"
/* On-demand governor macros */
-#define DEF_FREQUENCY_UP_THRESHOLD (63)
-#define DEF_SAMPLING_DOWN_FACTOR (1)
+#define DEF_FREQUENCY_UP_THRESHOLD (55)
+#define DEF_SAMPLING_DOWN_FACTOR (5)
#define MAX_SAMPLING_DOWN_FACTOR (100000)
-#define MICRO_FREQUENCY_UP_THRESHOLD (95)
+#define MICRO_FREQUENCY_UP_THRESHOLD (63)
#define MICRO_FREQUENCY_MIN_SAMPLE_RATE (10000)
#define MIN_FREQUENCY_UP_THRESHOLD (1)
#define MAX_FREQUENCY_UP_THRESHOLD (100)

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From f7f49141a5dbe9c99d78196b58c44307fb2e6be3 Mon Sep 17 00:00:00 2001
From: Tk-Glitch <ti3nou@gmail.com>
Date: Wed, 4 Jul 2018 04:30:08 +0200
Subject: glitched - PDS
diff --git a/kernel/Kconfig.hz b/kernel/Kconfig.hz
index 2a202a846757..1d9c7ed79b11 100644
--- a/kernel/Kconfig.hz
+++ b/kernel/Kconfig.hz
@@ -4,7 +4,7 @@
choice
prompt "Timer frequency"
- default HZ_250
+ default HZ_500
help
Allows the configuration of the timer frequency. It is customary
to have the timer interrupt run at 1000 Hz but 100 Hz may be more
@@ -39,6 +39,13 @@ choice
on SMP and NUMA systems and exactly dividing by both PAL and
NTSC frame rates for video and multimedia work.
+ config HZ_500
+ bool "500 HZ"
+ help
+ 500 Hz is a balanced timer frequency. Provides fast interactivity
+ on desktops with great smoothness without increasing CPU power
+ consumption and sacrificing the battery life on laptops.
+
config HZ_1000
bool "1000 HZ"
help
@@ -52,6 +59,7 @@ config HZ
default 100 if HZ_100
default 250 if HZ_250
default 300 if HZ_300
+ default 500 if HZ_500
default 1000 if HZ_1000
config SCHED_HRTICK
diff --git a/kernel/Kconfig.hz b/kernel/Kconfig.hz
index 2a202a846757..1d9c7ed79b11 100644
--- a/kernel/Kconfig.hz
+++ b/kernel/Kconfig.hz
@@ -4,7 +4,7 @@
choice
prompt "Timer frequency"
- default HZ_500
+ default HZ_750
help
Allows the configuration of the timer frequency. It is customary
to have the timer interrupt run at 1000 Hz but 100 Hz may be more
@@ -46,6 +46,13 @@ choice
on desktops with great smoothness without increasing CPU power
consumption and sacrificing the battery life on laptops.
+ config HZ_750
+ bool "750 HZ"
+ help
+ 750 Hz is a good timer frequency for desktops. Provides fast
+ interactivity with great smoothness without sacrificing too
+ much throughput.
+
config HZ_1000
bool "1000 HZ"
help
@@ -60,6 +67,7 @@ config HZ
default 250 if HZ_250
default 300 if HZ_300
default 500 if HZ_500
+ default 750 if HZ_750
default 1000 if HZ_1000
config SCHED_HRTICK
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 9270a4370d54..30d01e647417 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -159,7 +159,7 @@ struct scan_control {
/*
* From 0 .. 100. Higher means more swappy.
*/
-int vm_swappiness = 60;
+int vm_swappiness = 20;
/*
* The total number of pages which are beyond the high watermark within all
* zones.
diff --git a/init/Kconfig b/init/Kconfig
index 11fd9b502d06..e9bc34d3019b 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -715,6 +715,7 @@ menu "Scheduler features"
config UCLAMP_TASK
bool "Enable utilization clamping for RT/FAIR tasks"
depends on CPU_FREQ_GOV_SCHEDUTIL
+ depends on !SCHED_PDS
help
This feature enables the scheduler to track the clamped utilization
of each CPU based on RUNNABLE tasks scheduled on that CPU.
@@ -948,7 +948,6 @@ config CGROUP_DEVICE
config CGROUP_CPUACCT
bool "Simple CPU accounting controller"
- depends on !SCHED_PDS
help
Provides a simple controller for monitoring the
total CPU consumed by the tasks in a cgroup.
diff --git a/kernel/sched/Makefile b/kernel/sched/Makefile
index b23231bae996..cab4e5c5b38e 100644
--- a/kernel/sched/Makefile
+++ b/kernel/sched/Makefile
@@ -24,13 +24,13 @@ obj-y += fair.o rt.o deadline.o
obj-$(CONFIG_SMP) += cpudeadline.o topology.o stop_task.o
obj-$(CONFIG_SCHED_AUTOGROUP) += autogroup.o
obj-$(CONFIG_SCHED_DEBUG) += debug.o
-obj-$(CONFIG_CGROUP_CPUACCT) += cpuacct.o
endif
obj-y += loadavg.o clock.o cputime.o
obj-y += idle.o
obj-y += wait.o wait_bit.o swait.o completion.o
obj-$(CONFIG_SMP) += cpupri.o pelt.o
obj-$(CONFIG_SCHEDSTATS) += stats.o
+obj-$(CONFIG_CGROUP_CPUACCT) += cpuacct.o
obj-$(CONFIG_CPU_FREQ) += cpufreq.o
obj-$(CONFIG_CPU_FREQ_GOV_SCHEDUTIL) += cpufreq_schedutil.o
obj-$(CONFIG_MEMBARRIER) += membarrier.o
diff --git a/kernel/sched/pds.c b/kernel/sched/pds.c
index 9281ad164..f09a609cf 100644
--- a/kernel/sched/pds.c
+++ b/kernel/sched/pds.c
@@ -81,6 +81,18 @@ enum {
NR_CPU_AFFINITY_CHK_LEVEL
};
+/*
+ * This allows printing both to /proc/sched_debug and
+ * to the console
+ */
+#define SEQ_printf(m, x...) \
+ do { \
+ if (m) \
+ seq_printf(m, x); \
+ else \
+ pr_cont(x); \
+ } while (0)
+
static inline void print_scheduler_version(void)
{
printk(KERN_INFO "pds: PDS-mq CPU Scheduler 0.99o by Alfred Chen.\n");
@@ -6353,7 +6365,10 @@ void ia64_set_curr_task(int cpu, struct task_struct *p)
#ifdef CONFIG_SCHED_DEBUG
void proc_sched_show_task(struct task_struct *p, struct pid_namespace *ns,
struct seq_file *m)
-{}
+{
+ SEQ_printf(m, "%s (%d, #threads: %d)\n", p->comm, task_pid_nr_ns(p, ns),
+ get_nr_threads(p));
+}
void proc_sched_set_task(struct task_struct *p)
{}

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193
linux-tkg/linux-tkg-patches/5.8/0006-add-acs-overrides_iommu.patch
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From cdeab384f48dd9c88e2dff2e9ad8d57dca1a1b1c Mon Sep 17 00:00:00 2001
From: Mark Weiman <mark.weiman@markzz.com>
Date: Sun, 12 Aug 2018 11:36:21 -0400
Subject: [PATCH] pci: Enable overrides for missing ACS capabilities
This an updated version of Alex Williamson's patch from:
https://lkml.org/lkml/2013/5/30/513
Original commit message follows:
PCIe ACS (Access Control Services) is the PCIe 2.0+ feature that
allows us to control whether transactions are allowed to be redirected
in various subnodes of a PCIe topology. For instance, if two
endpoints are below a root port or downsteam switch port, the
downstream port may optionally redirect transactions between the
devices, bypassing upstream devices. The same can happen internally
on multifunction devices. The transaction may never be visible to the
upstream devices.
One upstream device that we particularly care about is the IOMMU. If
a redirection occurs in the topology below the IOMMU, then the IOMMU
cannot provide isolation between devices. This is why the PCIe spec
encourages topologies to include ACS support. Without it, we have to
assume peer-to-peer DMA within a hierarchy can bypass IOMMU isolation.
Unfortunately, far too many topologies do not support ACS to make this
a steadfast requirement. Even the latest chipsets from Intel are only
sporadically supporting ACS. We have trouble getting interconnect
vendors to include the PCIe spec required PCIe capability, let alone
suggested features.
Therefore, we need to add some flexibility. The pcie_acs_override=
boot option lets users opt-in specific devices or sets of devices to
assume ACS support. The "downstream" option assumes full ACS support
on root ports and downstream switch ports. The "multifunction"
option assumes the subset of ACS features available on multifunction
endpoints and upstream switch ports are supported. The "id:nnnn:nnnn"
option enables ACS support on devices matching the provided vendor
and device IDs, allowing more strategic ACS overrides. These options
may be combined in any order. A maximum of 16 id specific overrides
are available. It's suggested to use the most limited set of options
necessary to avoid completely disabling ACS across the topology.
Note to hardware vendors, we have facilities to permanently quirk
specific devices which enforce isolation but not provide an ACS
capability. Please contact me to have your devices added and save
your customers the hassle of this boot option.
Signed-off-by: Mark Weiman <mark.weiman@markzz.com>
---
.../admin-guide/kernel-parameters.txt | 9 ++
drivers/pci/quirks.c | 101 ++++++++++++++++++
2 files changed, 110 insertions(+)
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index aefd358a5ca3..173b3596fd9e 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -3190,6 +3190,15 @@
nomsi [MSI] If the PCI_MSI kernel config parameter is
enabled, this kernel boot option can be used to
disable the use of MSI interrupts system-wide.
+ pcie_acs_override =
+ [PCIE] Override missing PCIe ACS support for:
+ downstream
+ All downstream ports - full ACS capabilities
+ multifunction
+ All multifunction devices - multifunction ACS subset
+ id:nnnn:nnnn
+ Specific device - full ACS capabilities
+ Specified as vid:did (vendor/device ID) in hex
noioapicquirk [APIC] Disable all boot interrupt quirks.
Safety option to keep boot IRQs enabled. This
should never be necessary.
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 4700d24e5d55..8f7a3d7fd9c1 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -3372,6 +3372,106 @@ static void quirk_no_bus_reset(struct pci_dev *dev)
dev->dev_flags |= PCI_DEV_FLAGS_NO_BUS_RESET;
}
+static bool acs_on_downstream;
+static bool acs_on_multifunction;
+
+#define NUM_ACS_IDS 16
+struct acs_on_id {
+ unsigned short vendor;
+ unsigned short device;
+};
+static struct acs_on_id acs_on_ids[NUM_ACS_IDS];
+static u8 max_acs_id;
+
+static __init int pcie_acs_override_setup(char *p)
+{
+ if (!p)
+ return -EINVAL;
+
+ while (*p) {
+ if (!strncmp(p, "downstream", 10))
+ acs_on_downstream = true;
+ if (!strncmp(p, "multifunction", 13))
+ acs_on_multifunction = true;
+ if (!strncmp(p, "id:", 3)) {
+ char opt[5];
+ int ret;
+ long val;
+
+ if (max_acs_id >= NUM_ACS_IDS - 1) {
+ pr_warn("Out of PCIe ACS override slots (%d)\n",
+ NUM_ACS_IDS);
+ goto next;
+ }
+
+ p += 3;
+ snprintf(opt, 5, "%s", p);
+ ret = kstrtol(opt, 16, &val);
+ if (ret) {
+ pr_warn("PCIe ACS ID parse error %d\n", ret);
+ goto next;
+ }
+ acs_on_ids[max_acs_id].vendor = val;
+
+ p += strcspn(p, ":");
+ if (*p != ':') {
+ pr_warn("PCIe ACS invalid ID\n");
+ goto next;
+ }
+
+ p++;
+ snprintf(opt, 5, "%s", p);
+ ret = kstrtol(opt, 16, &val);
+ if (ret) {
+ pr_warn("PCIe ACS ID parse error %d\n", ret);
+ goto next;
+ }
+ acs_on_ids[max_acs_id].device = val;
+ max_acs_id++;
+ }
+next:
+ p += strcspn(p, ",");
+ if (*p == ',')
+ p++;
+ }
+
+ if (acs_on_downstream || acs_on_multifunction || max_acs_id)
+ pr_warn("Warning: PCIe ACS overrides enabled; This may allow non-IOMMU protected peer-to-peer DMA\n");
+
+ return 0;
+}
+early_param("pcie_acs_override", pcie_acs_override_setup);
+
+static int pcie_acs_overrides(struct pci_dev *dev, u16 acs_flags)
+{
+ int i;
+
+ /* Never override ACS for legacy devices or devices with ACS caps */
+ if (!pci_is_pcie(dev) ||
+ pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ACS))
+ return -ENOTTY;
+
+ for (i = 0; i < max_acs_id; i++)
+ if (acs_on_ids[i].vendor == dev->vendor &&
+ acs_on_ids[i].device == dev->device)
+ return 1;
+
+ switch (pci_pcie_type(dev)) {
+ case PCI_EXP_TYPE_DOWNSTREAM:
+ case PCI_EXP_TYPE_ROOT_PORT:
+ if (acs_on_downstream)
+ return 1;
+ break;
+ case PCI_EXP_TYPE_ENDPOINT:
+ case PCI_EXP_TYPE_UPSTREAM:
+ case PCI_EXP_TYPE_LEG_END:
+ case PCI_EXP_TYPE_RC_END:
+ if (acs_on_multifunction && dev->multifunction)
+ return 1;
+ }
+
+ return -ENOTTY;
+}
/*
* Some Atheros AR9xxx and QCA988x chips do not behave after a bus reset.
* The device will throw a Link Down error on AER-capable systems and
@@ -4513,6 +4613,7 @@ static const struct pci_dev_acs_enabled {
{ PCI_VENDOR_ID_ZHAOXIN, 0x9083, pci_quirk_mf_endpoint_acs },
/* Zhaoxin Root/Downstream Ports */
{ PCI_VENDOR_ID_ZHAOXIN, PCI_ANY_ID, pci_quirk_zhaoxin_pcie_ports_acs },
+ { PCI_ANY_ID, PCI_ANY_ID, pcie_acs_overrides },
{ 0 }
};

908
linux-tkg/linux-tkg-patches/5.8/0007-v5.8-fsync.patch
Unescape Escape View File

@ -0,0 +1,908 @@
From f7f49141a5dbe9c99d78196b58c44307fb2e6be3 Mon Sep 17 00:00:00 2001
From: Tk-Glitch <ti3nou@gmail.com>
Date: Mon, 20 Apr 2020 14:09:11 +0200
Subject: Import Fsync v3 patchset - Squashed from https://gitlab.collabora.com/tonyk/linux/-/commits/futex-proton-v3
diff --git a/include/uapi/linux/futex.h b/include/uapi/linux/futex.h
index a89eb0accd5e2ee527be1e3e11b1117ff5bf94b4..580001e89c6caed57dd8b3cb491d65dce846caff 100644
--- a/include/uapi/linux/futex.h
+++ b/include/uapi/linux/futex.h
@@ -21,6 +21,7 @@
#define FUTEX_WAKE_BITSET 10
#define FUTEX_WAIT_REQUEUE_PI 11
#define FUTEX_CMP_REQUEUE_PI 12
+#define FUTEX_WAIT_MULTIPLE 13
#define FUTEX_PRIVATE_FLAG 128
#define FUTEX_CLOCK_REALTIME 256
@@ -40,6 +41,8 @@
FUTEX_PRIVATE_FLAG)
#define FUTEX_CMP_REQUEUE_PI_PRIVATE (FUTEX_CMP_REQUEUE_PI | \
FUTEX_PRIVATE_FLAG)
+#define FUTEX_WAIT_MULTIPLE_PRIVATE (FUTEX_WAIT_MULTIPLE | \
+ FUTEX_PRIVATE_FLAG)
/*
* Support for robust futexes: the kernel cleans up held futexes at
@@ -150,4 +153,21 @@ struct robust_list_head {
(((op & 0xf) << 28) | ((cmp & 0xf) << 24) \
| ((oparg & 0xfff) << 12) | (cmparg & 0xfff))
+/*
+ * Maximum number of multiple futexes to wait for
+ */
+#define FUTEX_MULTIPLE_MAX_COUNT 128
+
+/**
+ * struct futex_wait_block - Block of futexes to be waited for
+ * @uaddr: User address of the futex
+ * @val: Futex value expected by userspace
+ * @bitset: Bitset for the optional bitmasked wakeup
+ */
+struct futex_wait_block {
+ __u32 __user *uaddr;
+ __u32 val;
+ __u32 bitset;
+};
+
#endif /* _UAPI_LINUX_FUTEX_H */
diff --git a/kernel/futex.c b/kernel/futex.c
index 0cf84c8664f207c574325b899ef2e57f01295a94..58cf9eb2b851b4858e29b5ef4114a29a92e676ba 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -215,6 +215,8 @@ struct futex_pi_state {
* @rt_waiter: rt_waiter storage for use with requeue_pi
* @requeue_pi_key: the requeue_pi target futex key
* @bitset: bitset for the optional bitmasked wakeup
+ * @uaddr: userspace address of futex
+ * @uval: expected futex's value
*
* We use this hashed waitqueue, instead of a normal wait_queue_entry_t, so
* we can wake only the relevant ones (hashed queues may be shared).
@@ -237,6 +239,8 @@ struct futex_q {
struct rt_mutex_waiter *rt_waiter;
union futex_key *requeue_pi_key;
u32 bitset;
+ u32 __user *uaddr;
+ u32 uval;
} __randomize_layout;
static const struct futex_q futex_q_init = {
@@ -2420,6 +2424,29 @@ static int unqueue_me(struct futex_q *q)
return ret;
}
+/**
+ * unqueue_multiple() - Remove several futexes from their futex_hash_bucket
+ * @q: The list of futexes to unqueue
+ * @count: Number of futexes in the list
+ *
+ * Helper to unqueue a list of futexes. This can't fail.
+ *
+ * Return:
+ * - >=0 - Index of the last futex that was awoken;
+ * - -1 - If no futex was awoken
+ */
+static int unqueue_multiple(struct futex_q *q, int count)
+{
+ int ret = -1;
+ int i;
+
+ for (i = 0; i < count; i++) {
+ if (!unqueue_me(&q[i]))
+ ret = i;
+ }
+ return ret;
+}
+
/*
* PI futexes can not be requeued and must remove themself from the
* hash bucket. The hash bucket lock (i.e. lock_ptr) is held on entry
@@ -2783,6 +2810,211 @@ static int futex_wait_setup(u32 __user *uaddr, u32 val, unsigned int flags,
return ret;
}
+/**
+ * futex_wait_multiple_setup() - Prepare to wait and enqueue multiple futexes
+ * @qs: The corresponding futex list
+ * @count: The size of the lists
+ * @flags: Futex flags (FLAGS_SHARED, etc.)
+ * @awaken: Index of the last awoken futex
+ *
+ * Prepare multiple futexes in a single step and enqueue them. This may fail if
+ * the futex list is invalid or if any futex was already awoken. On success the
+ * task is ready to interruptible sleep.
+ *
+ * Return:
+ * - 1 - One of the futexes was awaken by another thread
+ * - 0 - Success
+ * - <0 - -EFAULT, -EWOULDBLOCK or -EINVAL
+ */
+static int futex_wait_multiple_setup(struct futex_q *qs, int count,
+ unsigned int flags, int *awaken)
+{
+ struct futex_hash_bucket *hb;
+ int ret, i;
+ u32 uval;
+
+ /*
+ * Enqueuing multiple futexes is tricky, because we need to
+ * enqueue each futex in the list before dealing with the next
+ * one to avoid deadlocking on the hash bucket. But, before
+ * enqueuing, we need to make sure that current->state is
+ * TASK_INTERRUPTIBLE, so we don't absorb any awake events, which
+ * cannot be done before the get_futex_key of the next key,
+ * because it calls get_user_pages, which can sleep. Thus, we
+ * fetch the list of futexes keys in two steps, by first pinning
+ * all the memory keys in the futex key, and only then we read
+ * each key and queue the corresponding futex.
+ */
+retry:
+ for (i = 0; i < count; i++) {
+ qs[i].key = FUTEX_KEY_INIT;
+ ret = get_futex_key(qs[i].uaddr, flags & FLAGS_SHARED,
+ &qs[i].key, FUTEX_READ);
+ if (unlikely(ret)) {
+ for (--i; i >= 0; i--)
+ put_futex_key(&qs[i].key);
+ return ret;
+ }
+ }
+
+ set_current_state(TASK_INTERRUPTIBLE);
+
+ for (i = 0; i < count; i++) {
+ struct futex_q *q = &qs[i];
+
+ hb = queue_lock(q);
+
+ ret = get_futex_value_locked(&uval, q->uaddr);
+ if (ret) {
+ /*
+ * We need to try to handle the fault, which
+ * cannot be done without sleep, so we need to
+ * undo all the work already done, to make sure
+ * we don't miss any wake ups. Therefore, clean
+ * up, handle the fault and retry from the
+ * beginning.
+ */
+ queue_unlock(hb);
+
+ /*
+ * Keys 0..(i-1) are implicitly put
+ * on unqueue_multiple.
+ */
+ put_futex_key(&q->key);
+
+ *awaken = unqueue_multiple(qs, i);
+
+ __set_current_state(TASK_RUNNING);
+
+ /*
+ * On a real fault, prioritize the error even if
+ * some other futex was awoken. Userspace gave
+ * us a bad address, -EFAULT them.
+ */
+ ret = get_user(uval, q->uaddr);
+ if (ret)
+ return ret;
+
+ /*
+ * Even if the page fault was handled, If
+ * something was already awaken, we can safely
+ * give up and succeed to give a hint for userspace to
+ * acquire the right futex faster.
+ */
+ if (*awaken >= 0)
+ return 1;
+
+ goto retry;
+ }
+
+ if (uval != q->uval) {
+ queue_unlock(hb);
+
+ put_futex_key(&qs[i].key);
+
+ /*
+ * If something was already awaken, we can
+ * safely ignore the error and succeed.
+ */
+ *awaken = unqueue_multiple(qs, i);
+ __set_current_state(TASK_RUNNING);
+ if (*awaken >= 0)
+ return 1;
+
+ return -EWOULDBLOCK;
+ }
+
+ /*
+ * The bucket lock can't be held while dealing with the
+ * next futex. Queue each futex at this moment so hb can
+ * be unlocked.
+ */
+ queue_me(&qs[i], hb);
+ }
+ return 0;
+}
+
+/**
+ * futex_wait_multiple() - Prepare to wait on and enqueue several futexes
+ * @qs: The list of futexes to wait on
+ * @op: Operation code from futex's syscall
+ * @count: The number of objects
+ * @abs_time: Timeout before giving up and returning to userspace
+ *
+ * Entry point for the FUTEX_WAIT_MULTIPLE futex operation, this function
+ * sleeps on a group of futexes and returns on the first futex that
+ * triggered, or after the timeout has elapsed.
+ *
+ * Return:
+ * - >=0 - Hint to the futex that was awoken
+ * - <0 - On error
+ */
+static int futex_wait_multiple(struct futex_q *qs, int op,
+ u32 count, ktime_t *abs_time)
+{
+ struct hrtimer_sleeper timeout, *to;
+ int ret, flags = 0, hint = 0;
+ unsigned int i;
+
+ if (!(op & FUTEX_PRIVATE_FLAG))
+ flags |= FLAGS_SHARED;
+
+ if (op & FUTEX_CLOCK_REALTIME)
+ flags |= FLAGS_CLOCKRT;
+
+ to = futex_setup_timer(abs_time, &timeout, flags, 0);
+ while (1) {
+ ret = futex_wait_multiple_setup(qs, count, flags, &hint);
+ if (ret) {
+ if (ret > 0) {
+ /* A futex was awaken during setup */
+ ret = hint;
+ }
+ break;
+ }
+
+ if (to)
+ hrtimer_start_expires(&to->timer, HRTIMER_MODE_ABS);
+
+ /*
+ * Avoid sleeping if another thread already tried to
+ * wake us.
+ */
+ for (i = 0; i < count; i++) {
+ if (plist_node_empty(&qs[i].list))
+ break;
+ }
+
+ if (i == count && (!to || to->task))
+ freezable_schedule();
+
+ ret = unqueue_multiple(qs, count);
+
+ __set_current_state(TASK_RUNNING);
+
+ if (ret >= 0)
+ break;
+ if (to && !to->task) {
+ ret = -ETIMEDOUT;
+ break;
+ } else if (signal_pending(current)) {
+ ret = -ERESTARTSYS;
+ break;
+ }
+ /*
+ * The final case is a spurious wakeup, for
+ * which just retry.
+ */
+ }
+
+ if (to) {
+ hrtimer_cancel(&to->timer);
+ destroy_hrtimer_on_stack(&to->timer);
+ }
+
+ return ret;
+}
+
static int futex_wait(u32 __user *uaddr, unsigned int flags, u32 val,
ktime_t *abs_time, u32 bitset)
{
@@ -3907,6 +4139,43 @@ long do_futex(u32 __user *uaddr, int op, u32 val, ktime_t *timeout,
return -ENOSYS;
}
+/**
+ * futex_read_wait_block - Read an array of futex_wait_block from userspace
+ * @uaddr: Userspace address of the block
+ * @count: Number of blocks to be read
+ *
+ * This function creates and allocate an array of futex_q (we zero it to
+ * initialize the fields) and then, for each futex_wait_block element from
+ * userspace, fill a futex_q element with proper values.
+ */
+inline struct futex_q *futex_read_wait_block(u32 __user *uaddr, u32 count)
+{
+ unsigned int i;
+ struct futex_q *qs;
+ struct futex_wait_block fwb;
+ struct futex_wait_block __user *entry =
+ (struct futex_wait_block __user *)uaddr;
+
+ if (!count || count > FUTEX_MULTIPLE_MAX_COUNT)
+ return ERR_PTR(-EINVAL);
+
+ qs = kcalloc(count, sizeof(*qs), GFP_KERNEL);
+ if (!qs)
+ return ERR_PTR(-ENOMEM);
+
+ for (i = 0; i < count; i++) {
+ if (copy_from_user(&fwb, &entry[i], sizeof(fwb))) {
+ kfree(qs);
+ return ERR_PTR(-EFAULT);
+ }
+
+ qs[i].uaddr = fwb.uaddr;
+ qs[i].uval = fwb.val;
+ qs[i].bitset = fwb.bitset;
+ }
+
+ return qs;
+}
SYSCALL_DEFINE6(futex, u32 __user *, uaddr, int, op, u32, val,
struct __kernel_timespec __user *, utime, u32 __user *, uaddr2,
@@ -3919,7 +4188,8 @@ SYSCALL_DEFINE6(futex, u32 __user *, uaddr, int, op, u32, val,
if (utime && (cmd == FUTEX_WAIT || cmd == FUTEX_LOCK_PI ||
cmd == FUTEX_WAIT_BITSET ||
- cmd == FUTEX_WAIT_REQUEUE_PI)) {
+ cmd == FUTEX_WAIT_REQUEUE_PI ||
+ cmd == FUTEX_WAIT_MULTIPLE)) {
if (unlikely(should_fail_futex(!(op & FUTEX_PRIVATE_FLAG))))
return -EFAULT;
if (get_timespec64(&ts, utime))
@@ -3940,6 +4210,25 @@ SYSCALL_DEFINE6(futex, u32 __user *, uaddr, int, op, u32, val,
cmd == FUTEX_CMP_REQUEUE_PI || cmd == FUTEX_WAKE_OP)
val2 = (u32) (unsigned long) utime;
+ if (cmd == FUTEX_WAIT_MULTIPLE) {
+ int ret;
+ struct futex_q *qs;
+
+#ifdef CONFIG_X86_X32
+ if (unlikely(in_x32_syscall()))
+ return -ENOSYS;
+#endif
+ qs = futex_read_wait_block(uaddr, val);
+
+ if (IS_ERR(qs))
+ return PTR_ERR(qs);
+
+ ret = futex_wait_multiple(qs, op, val, tp);
+ kfree(qs);
+
+ return ret;
+ }
+
return do_futex(uaddr, op, val, tp, uaddr2, val2, val3);
}
@@ -4102,6 +4391,57 @@ COMPAT_SYSCALL_DEFINE3(get_robust_list, int, pid,
#endif /* CONFIG_COMPAT */
#ifdef CONFIG_COMPAT_32BIT_TIME
+/**
+ * struct compat_futex_wait_block - Block of futexes to be waited for
+ * @uaddr: User address of the futex (compatible pointer)
+ * @val: Futex value expected by userspace
+ * @bitset: Bitset for the optional bitmasked wakeup
+ */
+struct compat_futex_wait_block {
+ compat_uptr_t uaddr;
+ __u32 val;
+ __u32 bitset;
+};
+
+/**
+ * compat_futex_read_wait_block - Read an array of futex_wait_block from
+ * userspace
+ * @uaddr: Userspace address of the block
+ * @count: Number of blocks to be read
+ *
+ * This function does the same as futex_read_wait_block(), except that it
+ * converts the pointer to the futex from the compat version to the regular one.
+ */
+inline struct futex_q *compat_futex_read_wait_block(u32 __user *uaddr,
+ u32 count)
+{
+ unsigned int i;
+ struct futex_q *qs;
+ struct compat_futex_wait_block fwb;
+ struct compat_futex_wait_block __user *entry =
+ (struct compat_futex_wait_block __user *)uaddr;
+
+ if (!count || count > FUTEX_MULTIPLE_MAX_COUNT)
+ return ERR_PTR(-EINVAL);
+
+ qs = kcalloc(count, sizeof(*qs), GFP_KERNEL);
+ if (!qs)
+ return ERR_PTR(-ENOMEM);
+
+ for (i = 0; i < count; i++) {
+ if (copy_from_user(&fwb, &entry[i], sizeof(fwb))) {
+ kfree(qs);
+ return ERR_PTR(-EFAULT);
+ }
+
+ qs[i].uaddr = compat_ptr(fwb.uaddr);
+ qs[i].uval = fwb.val;
+ qs[i].bitset = fwb.bitset;
+ }
+
+ return qs;
+}
+
SYSCALL_DEFINE6(futex_time32, u32 __user *, uaddr, int, op, u32, val,
struct old_timespec32 __user *, utime, u32 __user *, uaddr2,
u32, val3)
@@ -4113,7 +4453,8 @@ SYSCALL_DEFINE6(futex_time32, u32 __user *, uaddr, int, op, u32, val,
if (utime && (cmd == FUTEX_WAIT || cmd == FUTEX_LOCK_PI ||
cmd == FUTEX_WAIT_BITSET ||
- cmd == FUTEX_WAIT_REQUEUE_PI)) {
+ cmd == FUTEX_WAIT_REQUEUE_PI ||
+ cmd == FUTEX_WAIT_MULTIPLE)) {
if (get_old_timespec32(&ts, utime))
return -EFAULT;
if (!timespec64_valid(&ts))
@@ -4128,6 +4469,19 @@ SYSCALL_DEFINE6(futex_time32, u32 __user *, uaddr, int, op, u32, val,
cmd == FUTEX_CMP_REQUEUE_PI || cmd == FUTEX_WAKE_OP)
val2 = (int) (unsigned long) utime;
+ if (cmd == FUTEX_WAIT_MULTIPLE) {
+ int ret;
+ struct futex_q *qs = compat_futex_read_wait_block(uaddr, val);
+
+ if (IS_ERR(qs))
+ return PTR_ERR(qs);
+
+ ret = futex_wait_multiple(qs, op, val, tp);
+ kfree(qs);
+
+ return ret;
+ }
+
return do_futex(uaddr, op, val, tp, uaddr2, val2, val3);
}
#endif /* CONFIG_COMPAT_32BIT_TIME */
diff --git a/tools/testing/selftests/futex/functional/futex_wait_timeout.c b/tools/testing/selftests/futex/functional/futex_wait_timeout.c
index ee55e6d389a3f053194435342c4e471dc7cf8786..2a63e1c2cfb6407a5988233217cff2e52787bc66 100644
--- a/tools/testing/selftests/futex/functional/futex_wait_timeout.c
+++ b/tools/testing/selftests/futex/functional/futex_wait_timeout.c
@@ -11,6 +11,7 @@
*
* HISTORY
* 2009-Nov-6: Initial version by Darren Hart <dvhart@linux.intel.com>
+ * 2019-Dec-13: Add WAIT_MULTIPLE test by Krisman <krisman@collabora.com>
*
*****************************************************************************/
@@ -41,6 +42,8 @@ int main(int argc, char *argv[])
{
futex_t f1 = FUTEX_INITIALIZER;
struct timespec to;
+ time_t secs;
+ struct futex_wait_block fwb = {&f1, f1, 0};
int res, ret = RET_PASS;
int c;
@@ -65,7 +68,7 @@ int main(int argc, char *argv[])
}
ksft_print_header();
- ksft_set_plan(1);
+ ksft_set_plan(2);
ksft_print_msg("%s: Block on a futex and wait for timeout\n",
basename(argv[0]));
ksft_print_msg("\tArguments: timeout=%ldns\n", timeout_ns);
@@ -79,8 +82,39 @@ int main(int argc, char *argv[])
if (!res || errno != ETIMEDOUT) {
fail("futex_wait returned %d\n", ret < 0 ? errno : ret);
ret = RET_FAIL;
+ } else
+ ksft_test_result_pass("futex_wait timeout succeeds\n");
+
+ info("Calling futex_wait_multiple on f1: %u @ %p\n", f1, &f1);
+
+ /* Setup absolute time */
+ ret = clock_gettime(CLOCK_REALTIME, &to);
+ secs = (to.tv_nsec + timeout_ns) / 1000000000;
+ to.tv_nsec = ((int64_t)to.tv_nsec + timeout_ns) % 1000000000;
+ to.tv_sec += secs;
+ info("to.tv_sec = %ld\n", to.tv_sec);
+ info("to.tv_nsec = %ld\n", to.tv_nsec);
+
+ res = futex_wait_multiple(&fwb, 1, &to,
+ FUTEX_PRIVATE_FLAG | FUTEX_CLOCK_REALTIME);
+
+#ifdef __ILP32__
+ if (res == -1 && errno == ENOSYS) {
+ ksft_test_result_skip("futex_wait_multiple not supported at x32\n");
+ } else {
+ ksft_test_result_fail("futex_wait_multiple returned %d\n",
+ res < 0 ? errno : res);
+ ret = RET_FAIL;
}
+#else
+ if (!res || errno != ETIMEDOUT) {
+ ksft_test_result_fail("futex_wait_multiple returned %d\n",
+ res < 0 ? errno : res);
+ ret = RET_FAIL;
+ } else
+ ksft_test_result_pass("futex_wait_multiple timeout succeeds\n");
+#endif /* __ILP32__ */
- print_result(TEST_NAME, ret);
+ ksft_print_cnts();
return ret;
}
diff --git a/tools/testing/selftests/futex/include/futextest.h b/tools/testing/selftests/futex/include/futextest.h
index ddbcfc9b7bac4aebb5bac2f249e26ecfd948aa84..bb103bef4557012ef9a389ca74c868e4476a8a31 100644
--- a/tools/testing/selftests/futex/include/futextest.h
+++ b/tools/testing/selftests/futex/include/futextest.h
@@ -38,6 +38,14 @@ typedef volatile u_int32_t futex_t;
#ifndef FUTEX_CMP_REQUEUE_PI
#define FUTEX_CMP_REQUEUE_PI 12
#endif
+#ifndef FUTEX_WAIT_MULTIPLE
+#define FUTEX_WAIT_MULTIPLE 13
+struct futex_wait_block {
+ futex_t *uaddr;
+ futex_t val;
+ __u32 bitset;
+};
+#endif
#ifndef FUTEX_WAIT_REQUEUE_PI_PRIVATE
#define FUTEX_WAIT_REQUEUE_PI_PRIVATE (FUTEX_WAIT_REQUEUE_PI | \
FUTEX_PRIVATE_FLAG)
@@ -80,6 +88,20 @@ futex_wait(futex_t *uaddr, futex_t val, struct timespec *timeout, int opflags)
return futex(uaddr, FUTEX_WAIT, val, timeout, NULL, 0, opflags);
}
+/**
+ * futex_wait_multiple() - block on several futexes with optional timeout
+ * @fwb: wait block user space address
+ * @count: number of entities at fwb
+ * @timeout: absolute timeout
+ */
+static inline int
+futex_wait_multiple(struct futex_wait_block *fwb, int count,
+ struct timespec *timeout, int opflags)
+{
+ return futex(fwb, FUTEX_WAIT_MULTIPLE, count, timeout, NULL, 0,
+ opflags);
+}
+
/**
* futex_wake() - wake one or more tasks blocked on uaddr
* @nr_wake: wake up to this many tasks
diff --git a/tools/testing/selftests/futex/functional/futex_wait_wouldblock.c b/tools/testing/selftests/futex/functional/futex_wait_wouldblock.c
index 0ae390ff816449c88d0bb655a26eb014382c2b4f..bcbac042992d447e0bc9ef5fefe94e875de310f2 100644
--- a/tools/testing/selftests/futex/functional/futex_wait_wouldblock.c
+++ b/tools/testing/selftests/futex/functional/futex_wait_wouldblock.c
@@ -12,6 +12,7 @@
*
* HISTORY
* 2009-Nov-14: Initial version by Gowrishankar <gowrishankar.m@in.ibm.com>
+ * 2019-Dec-13: Add WAIT_MULTIPLE test by Krisman <krisman@collabora.com>
*
*****************************************************************************/
@@ -40,6 +41,7 @@ int main(int argc, char *argv[])
{
struct timespec to = {.tv_sec = 0, .tv_nsec = timeout_ns};
futex_t f1 = FUTEX_INITIALIZER;
+ struct futex_wait_block fwb = {&f1, f1+1, 0};
int res, ret = RET_PASS;
int c;
@@ -61,7 +63,7 @@ int main(int argc, char *argv[])
}
ksft_print_header();
- ksft_set_plan(1);
+ ksft_set_plan(2);
ksft_print_msg("%s: Test the unexpected futex value in FUTEX_WAIT\n",
basename(argv[0]));
@@ -71,8 +73,30 @@ int main(int argc, char *argv[])
fail("futex_wait returned: %d %s\n",
res ? errno : res, res ? strerror(errno) : "");
ret = RET_FAIL;
+ } else
+ ksft_test_result_pass("futex_wait wouldblock succeeds\n");
+
+ info("Calling futex_wait_multiple on f1: %u @ %p with val=%u\n",
+ f1, &f1, f1+1);
+ res = futex_wait_multiple(&fwb, 1, NULL, FUTEX_PRIVATE_FLAG);
+
+#ifdef __ILP32__
+ if (res != -1 || errno != ENOSYS) {
+ ksft_test_result_fail("futex_wait_multiple returned %d\n",
+ res < 0 ? errno : res);
+ ret = RET_FAIL;
+ } else {
+ ksft_test_result_skip("futex_wait_multiple not supported at x32\n");
+ }
+#else
+ if (!res || errno != EWOULDBLOCK) {
+ ksft_test_result_fail("futex_wait_multiple returned %d\n",
+ res < 0 ? errno : res);
+ ret = RET_FAIL;
}
+ ksft_test_result_pass("futex_wait_multiple wouldblock succeeds\n");
+#endif /* __ILP32__ */
- print_result(TEST_NAME, ret);
+ ksft_print_cnts();
return ret;
}
diff --git a/tools/testing/selftests/futex/functional/.gitignore b/tools/testing/selftests/futex/functional/.gitignore
index a09f570619023750f558c84004aff166b4337d72..4660128a545edb04a17cc6bd9760931c1386122f 100644
--- a/tools/testing/selftests/futex/functional/.gitignore
+++ b/tools/testing/selftests/futex/functional/.gitignore
@@ -5,3 +5,4 @@ futex_wait_private_mapped_file
futex_wait_timeout
futex_wait_uninitialized_heap
futex_wait_wouldblock
+futex_wait_multiple
diff --git a/tools/testing/selftests/futex/functional/Makefile b/tools/testing/selftests/futex/functional/Makefile
index 30996306cabcfe89a47977643e529b122893bb7e..75f9fface11fa3c90c1bdb9a49b3ea51291afd58 100644
--- a/tools/testing/selftests/futex/functional/Makefile
+++ b/tools/testing/selftests/futex/functional/Makefile
@@ -14,7 +14,8 @@ TEST_GEN_FILES := \
futex_requeue_pi_signal_restart \
futex_requeue_pi_mismatched_ops \
futex_wait_uninitialized_heap \
- futex_wait_private_mapped_file
+ futex_wait_private_mapped_file \
+ futex_wait_multiple
TEST_PROGS := run.sh
diff --git a/tools/testing/selftests/futex/functional/futex_wait_multiple.c b/tools/testing/selftests/futex/functional/futex_wait_multiple.c
new file mode 100644
index 0000000000000000000000000000000000000000..b48422e79f42edba1653bb0bd2a4c4fd98d2d48d
--- /dev/null
+++ b/tools/testing/selftests/futex/functional/futex_wait_multiple.c
@@ -0,0 +1,173 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/******************************************************************************
+ *
+ * Copyright © Collabora, Ltd., 2019
+ *
+ * DESCRIPTION
+ * Test basic semantics of FUTEX_WAIT_MULTIPLE
+ *
+ * AUTHOR
+ * Gabriel Krisman Bertazi <krisman@collabora.com>
+ *
+ * HISTORY
+ * 2019-Dec-13: Initial version by Krisman <krisman@collabora.com>
+ *
+ *****************************************************************************/
+
+#include <errno.h>
+#include <getopt.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <pthread.h>
+#include "futextest.h"
+#include "logging.h"
+
+#define TEST_NAME "futex-wait-multiple"
+#define timeout_ns 100000
+#define MAX_COUNT 128
+#define WAKE_WAIT_US 3000000
+
+int ret = RET_PASS;
+char *progname;
+futex_t f[MAX_COUNT] = {0};
+struct futex_wait_block fwb[MAX_COUNT];
+
+void usage(char *prog)
+{
+ printf("Usage: %s\n", prog);
+ printf(" -c Use color\n");
+ printf(" -h Display this help message\n");
+ printf(" -v L Verbosity level: %d=QUIET %d=CRITICAL %d=INFO\n",
+ VQUIET, VCRITICAL, VINFO);
+}
+
+void test_count_overflow(void)
+{
+ futex_t f = FUTEX_INITIALIZER;
+ struct futex_wait_block fwb[MAX_COUNT+1];
+ int res, i;
+
+ ksft_print_msg("%s: Test a too big number of futexes\n", progname);
+
+ for (i = 0; i < MAX_COUNT+1; i++) {
+ fwb[i].uaddr = &f;
+ fwb[i].val = f;
+ fwb[i].bitset = 0;
+ }
+
+ res = futex_wait_multiple(fwb, MAX_COUNT+1, NULL, FUTEX_PRIVATE_FLAG);
+
+#ifdef __ILP32__
+ if (res != -1 || errno != ENOSYS) {
+ ksft_test_result_fail("futex_wait_multiple returned %d\n",
+ res < 0 ? errno : res);
+ ret = RET_FAIL;
+ } else {
+ ksft_test_result_skip("futex_wait_multiple not supported at x32\n");
+ }
+#else
+ if (res != -1 || errno != EINVAL) {
+ ksft_test_result_fail("futex_wait_multiple returned %d\n",
+ res < 0 ? errno : res);
+ ret = RET_FAIL;
+ } else {
+ ksft_test_result_pass("futex_wait_multiple count overflow succeed\n");
+ }
+
+#endif /* __ILP32__ */
+}
+
+void *waiterfn(void *arg)
+{
+ int res;
+
+ res = futex_wait_multiple(fwb, MAX_COUNT, NULL, FUTEX_PRIVATE_FLAG);
+
+#ifdef __ILP32__
+ if (res != -1 || errno != ENOSYS) {
+ ksft_test_result_fail("futex_wait_multiple returned %d\n",
+ res < 0 ? errno : res);
+ ret = RET_FAIL;
+ } else {
+ ksft_test_result_skip("futex_wait_multiple not supported at x32\n");
+ }
+#else
+ if (res < 0)
+ ksft_print_msg("waiter failed %d\n", res);
+
+ info("futex_wait_multiple: Got hint futex %d was freed\n", res);
+#endif /* __ILP32__ */
+
+ return NULL;
+}
+
+void test_fwb_wakeup(void)
+{
+ int res, i;
+ pthread_t waiter;
+
+ ksft_print_msg("%s: Test wake up in a list of futex\n", progname);
+
+ for (i = 0; i < MAX_COUNT; i++) {
+ fwb[i].uaddr = &f[i];
+ fwb[i].val = f[i];
+ fwb[i].bitset = 0xffffffff;
+ }
+
+ res = pthread_create(&waiter, NULL, waiterfn, NULL);
+ if (res) {
+ ksft_test_result_fail("Creating waiting thread failed");
+ ksft_exit_fail();
+ }
+
+ usleep(WAKE_WAIT_US);
+ res = futex_wake(&(f[MAX_COUNT-1]), 1, FUTEX_PRIVATE_FLAG);
+ if (res != 1) {
+ ksft_test_result_fail("Failed to wake thread res=%d\n", res);
+ ksft_exit_fail();
+ }
+
+ pthread_join(waiter, NULL);
+ ksft_test_result_pass("%s succeed\n", __func__);
+}
+
+int main(int argc, char *argv[])
+{
+ int c;
+
+ while ((c = getopt(argc, argv, "cht:v:")) != -1) {
+ switch (c) {
+ case 'c':
+ log_color(1);
+ break;
+ case 'h':
+ usage(basename(argv[0]));
+ exit(0);
+ case 'v':
+ log_verbosity(atoi(optarg));
+ break;
+ default:
+ usage(basename(argv[0]));
+ exit(1);
+ }
+ }
+
+ progname = basename(argv[0]);
+
+ ksft_print_header();
+ ksft_set_plan(2);
+
+ test_count_overflow();
+
+#ifdef __ILP32__
+ // if it's a 32x binary, there's no futex to wakeup
+ ksft_test_result_skip("futex_wait_multiple not supported at x32\n");
+#else
+ test_fwb_wakeup();
+#endif /* __ILP32__ */
+
+ ksft_print_cnts();
+ return ret;
+}
diff --git a/tools/testing/selftests/futex/functional/run.sh b/tools/testing/selftests/futex/functional/run.sh
index 1acb6ace1680e8f3d6b3ee2dc528c19ddfdb018e..a8be94f28ff78b4879d2d19bca5d9b0fcb26c1f8 100755
--- a/tools/testing/selftests/futex/functional/run.sh
+++ b/tools/testing/selftests/futex/functional/run.sh
@@ -73,3 +73,6 @@ echo
echo
./futex_wait_uninitialized_heap $COLOR
./futex_wait_private_mapped_file $COLOR
+
+echo
+./futex_wait_multiple $COLOR
diff --git a/include/uapi/linux/futex.h b/include/uapi/linux/futex.h
index 580001e89c6caed57dd8b3cb491d65dce846caff..a3e760886b8e7e74285fdcf2caaaa6f66ad16675 100644
--- a/include/uapi/linux/futex.h
+++ b/include/uapi/linux/futex.h
@@ -21,7 +21,7 @@
#define FUTEX_WAKE_BITSET 10
#define FUTEX_WAIT_REQUEUE_PI 11
#define FUTEX_CMP_REQUEUE_PI 12
-#define FUTEX_WAIT_MULTIPLE 13
+#define FUTEX_WAIT_MULTIPLE 31
#define FUTEX_PRIVATE_FLAG 128
#define FUTEX_CLOCK_REALTIME 256
diff --git a/kernel/futex.c b/kernel/futex.c
index 58cf9eb2b851b4858e29b5ef4114a29a92e676ba..e0bb628a5e1988dcc9ae5442a4259edc229d578d 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -4198,7 +4198,7 @@ SYSCALL_DEFINE6(futex, u32 __user *, uaddr, int, op, u32, val,
return -EINVAL;
t = timespec64_to_ktime(ts);
- if (cmd == FUTEX_WAIT)
+ if (cmd == FUTEX_WAIT || cmd == FUTEX_WAIT_MULTIPLE)
t = ktime_add_safe(ktime_get(), t);
tp = &t;
}
@@ -4399,6 +4399,7 @@ COMPAT_SYSCALL_DEFINE3(get_robust_list, int, pid,
*/
struct compat_futex_wait_block {
compat_uptr_t uaddr;
+ __u32 pad;
__u32 val;
__u32 bitset;
};
@@ -4461,7 +4462,7 @@ SYSCALL_DEFINE6(futex_time32, u32 __user *, uaddr, int, op, u32, val,
return -EINVAL;
t = timespec64_to_ktime(ts);
- if (cmd == FUTEX_WAIT)
+ if (cmd == FUTEX_WAIT || cmd == FUTEX_WAIT_MULTIPLE)
t = ktime_add_safe(ktime_get(), t);
tp = &t;
}

70598
linux-tkg/linux-tkg-patches/5.8/0008-5.8-bcachefs.patch
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linux-tkg/linux-tkg-patches/5.8/0009-glitched-bmq.patch
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@ -0,0 +1,90 @@
From f7f49141a5dbe9c99d78196b58c44307fb2e6be3 Mon Sep 17 00:00:00 2001
From: Tk-Glitch <ti3nou@gmail.com>
Date: Wed, 4 Jul 2018 04:30:08 +0200
Subject: glitched - BMQ
diff --git a/kernel/Kconfig.hz b/kernel/Kconfig.hz
index 2a202a846757..1d9c7ed79b11 100644
--- a/kernel/Kconfig.hz
+++ b/kernel/Kconfig.hz
@@ -4,7 +4,7 @@
choice
prompt "Timer frequency"
- default HZ_250
+ default HZ_500
help
Allows the configuration of the timer frequency. It is customary
to have the timer interrupt run at 1000 Hz but 100 Hz may be more
@@ -39,6 +39,13 @@ choice
on SMP and NUMA systems and exactly dividing by both PAL and
NTSC frame rates for video and multimedia work.
+ config HZ_500
+ bool "500 HZ"
+ help
+ 500 Hz is a balanced timer frequency. Provides fast interactivity
+ on desktops with great smoothness without increasing CPU power
+ consumption and sacrificing the battery life on laptops.
+
config HZ_1000
bool "1000 HZ"
help
@@ -52,6 +59,7 @@ config HZ
default 100 if HZ_100
default 250 if HZ_250
default 300 if HZ_300
+ default 500 if HZ_500
default 1000 if HZ_1000
config SCHED_HRTICK
diff --git a/kernel/Kconfig.hz b/kernel/Kconfig.hz
index 2a202a846757..1d9c7ed79b11 100644
--- a/kernel/Kconfig.hz
+++ b/kernel/Kconfig.hz
@@ -4,7 +4,7 @@
choice
prompt "Timer frequency"
- default HZ_500
+ default HZ_750
help
Allows the configuration of the timer frequency. It is customary
to have the timer interrupt run at 1000 Hz but 100 Hz may be more
@@ -46,6 +46,13 @@ choice
on desktops with great smoothness without increasing CPU power
consumption and sacrificing the battery life on laptops.
+ config HZ_750
+ bool "750 HZ"
+ help
+ 750 Hz is a good timer frequency for desktops. Provides fast
+ interactivity with great smoothness without sacrificing too
+ much throughput.
+
config HZ_1000
bool "1000 HZ"
help
@@ -60,6 +67,7 @@ config HZ
default 250 if HZ_250
default 300 if HZ_300
default 500 if HZ_500
+ default 750 if HZ_750
default 1000 if HZ_1000
config SCHED_HRTICK
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 9270a4370d54..30d01e647417 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -159,7 +159,7 @@ struct scan_control {
/*
* From 0 .. 100. Higher means more swappy.
*/
-int vm_swappiness = 60;
+int vm_swappiness = 20;
/*
* The total number of pages which are beyond the high watermark within all
* zones.

18
linux-tkg/linux-tkg-patches/5.8/0009-glitched-ondemand-bmq.patch
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@ -0,0 +1,18 @@
diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index 6b423eebfd5d..61e3271675d6 100644
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -21,10 +21,10 @@
#include "cpufreq_ondemand.h"
/* On-demand governor macros */
-#define DEF_FREQUENCY_UP_THRESHOLD (80)
-#define DEF_SAMPLING_DOWN_FACTOR (1)
+#define DEF_FREQUENCY_UP_THRESHOLD (55)
+#define DEF_SAMPLING_DOWN_FACTOR (5)
#define MAX_SAMPLING_DOWN_FACTOR (100000)
-#define MICRO_FREQUENCY_UP_THRESHOLD (95)
+#define MICRO_FREQUENCY_UP_THRESHOLD (63)
#define MICRO_FREQUENCY_MIN_SAMPLE_RATE (10000)
#define MIN_FREQUENCY_UP_THRESHOLD (1)
#define MAX_FREQUENCY_UP_THRESHOLD (100)

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linux-tkg/linux-tkg-patches/5.8/0011-ZFS-fix.patch
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@ -0,0 +1,43 @@
From 1e010beda2896bdf3082fb37a3e49f8ce20e04d8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Thalheim?= <joerg@thalheim.io>
Date: Thu, 2 May 2019 05:28:08 +0100
Subject: [PATCH] x86/fpu: Export kernel_fpu_{begin,end}() with
EXPORT_SYMBOL_GPL
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
We need these symbols in zfs as the fpu implementation breaks userspace:
https://github.com/zfsonlinux/zfs/issues/9346
Signed-off-by: Jörg Thalheim <joerg@thalheim.io>
---
arch/x86/kernel/fpu/core.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c
index 12c70840980e..352538b3bb5d 100644
--- a/arch/x86/kernel/fpu/core.c
+++ b/arch/x86/kernel/fpu/core.c
@@ -102,7 +102,7 @@ void kernel_fpu_begin(void)
}
__cpu_invalidate_fpregs_state();
}
-EXPORT_SYMBOL_GPL(kernel_fpu_begin);
+EXPORT_SYMBOL(kernel_fpu_begin);
void kernel_fpu_end(void)
{
@@ -111,7 +111,7 @@ void kernel_fpu_end(void)
this_cpu_write(in_kernel_fpu, false);
preempt_enable();
}
-EXPORT_SYMBOL_GPL(kernel_fpu_end);
+EXPORT_SYMBOL(kernel_fpu_end);
/*
* Save the FPU state (mark it for reload if necessary):
--
2.23.0

54
linux-tkg/linux-tkg-patches/5.8/0012-misc-additions.patch
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@ -0,0 +1,54 @@
diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig
index 0840d27381ea..73aba9a31064 100644
--- a/drivers/tty/Kconfig
+++ b/drivers/tty/Kconfig
@@ -75,6 +75,19 @@ config VT_CONSOLE_SLEEP
def_bool y
depends on VT_CONSOLE && PM_SLEEP
+config NR_TTY_DEVICES
+ int "Maximum tty device number"
+ depends on VT
+ range 12 63
+ default 63
+ ---help---
+ This option is used to change the number of tty devices in /dev.
+ The default value is 63. The lowest number you can set is 12,
+ 63 is also the upper limit so we don't overrun the serial
+ consoles.
+
+ If unsure, say 63.
+
config HW_CONSOLE
bool
depends on VT && !UML
diff --git a/include/uapi/linux/vt.h b/include/uapi/linux/vt.h
index e9d39c48520a..3bceead8da40 100644
--- a/include/uapi/linux/vt.h
+++ b/include/uapi/linux/vt.h
@@ -3,12 +3,25 @@
#define _UAPI_LINUX_VT_H
+/*
+ * We will make this definition solely for the purpose of making packages
+ * such as splashutils build, because they can not understand that
+ * NR_TTY_DEVICES is defined in the kernel configuration.
+ */
+#ifndef CONFIG_NR_TTY_DEVICES
+#define CONFIG_NR_TTY_DEVICES 63
+#endif
+
/*
* These constants are also useful for user-level apps (e.g., VC
* resizing).
*/
#define MIN_NR_CONSOLES 1 /* must be at least 1 */
-#define MAX_NR_CONSOLES 63 /* serial lines start at 64 */
+/*
+ * NR_TTY_DEVICES:
+ * Value MUST be at least 12 and must never be higher then 63
+ */
+#define MAX_NR_CONSOLES CONFIG_NR_TTY_DEVICES /* serial lines start above this */
/* Note: the ioctl VT_GETSTATE does not work for
consoles 16 and higher (since it returns a short) */

156
linux-tkg/linux-tkg-patches/5.9/0001-add-sysctl-to-disallow-unprivileged-CLONE_NEWUSER-by.patch
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From 5ec2dd3a095442ec1a21d86042a4994f2ba24e63 Mon Sep 17 00:00:00 2001
Message-Id: <5ec2dd3a095442ec1a21d86042a4994f2ba24e63.1512651251.git.jan.steffens@gmail.com>
From: Serge Hallyn <serge.hallyn@canonical.com>
Date: Fri, 31 May 2013 19:12:12 +0100
Subject: [PATCH] add sysctl to disallow unprivileged CLONE_NEWUSER by default
Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
[bwh: Remove unneeded binary sysctl bits]
Signed-off-by: Daniel Micay <danielmicay@gmail.com>
---
kernel/fork.c | 15 +++++++++++++++
kernel/sysctl.c | 12 ++++++++++++
kernel/user_namespace.c | 3 +++
3 files changed, 30 insertions(+)
diff --git a/kernel/fork.c b/kernel/fork.c
index 07cc743698d3668e..4011d68a8ff9305c 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -102,6 +102,11 @@
#define CREATE_TRACE_POINTS
#include <trace/events/task.h>
+#ifdef CONFIG_USER_NS
+extern int unprivileged_userns_clone;
+#else
+#define unprivileged_userns_clone 0
+#endif
/*
* Minimum number of threads to boot the kernel
@@ -1555,6 +1560,10 @@ static __latent_entropy struct task_struct *copy_process(
if ((clone_flags & (CLONE_NEWUSER|CLONE_FS)) == (CLONE_NEWUSER|CLONE_FS))
return ERR_PTR(-EINVAL);
+ if ((clone_flags & CLONE_NEWUSER) && !unprivileged_userns_clone)
+ if (!capable(CAP_SYS_ADMIN))
+ return ERR_PTR(-EPERM);
+
/*
* Thread groups must share signals as well, and detached threads
* can only be started up within the thread group.
@@ -2348,6 +2357,12 @@ SYSCALL_DEFINE1(unshare, unsigned long, unshare_flags)
if (unshare_flags & CLONE_NEWNS)
unshare_flags |= CLONE_FS;
+ if ((unshare_flags & CLONE_NEWUSER) && !unprivileged_userns_clone) {
+ err = -EPERM;
+ if (!capable(CAP_SYS_ADMIN))
+ goto bad_unshare_out;
+ }
+
err = check_unshare_flags(unshare_flags);
if (err)
goto bad_unshare_out;
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index b86520ed3fb60fbf..f7dab3760839f1a1 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -105,6 +105,9 @@ extern int core_uses_pid;
#if defined(CONFIG_SYSCTL)
+#ifdef CONFIG_USER_NS
+extern int unprivileged_userns_clone;
+#endif
/* Constants used for minimum and maximum */
#ifdef CONFIG_LOCKUP_DETECTOR
static int sixty = 60;
@@ -513,6 +516,15 @@ static struct ctl_table kern_table[] = {
.proc_handler = proc_dointvec,
},
#endif
+#ifdef CONFIG_USER_NS
+ {
+ .procname = "unprivileged_userns_clone",
+ .data = &unprivileged_userns_clone,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+#endif
#ifdef CONFIG_PROC_SYSCTL
{
.procname = "tainted",
diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c
index c490f1e4313b998a..dd03bd39d7bf194d 100644
--- a/kernel/user_namespace.c
+++ b/kernel/user_namespace.c
@@ -24,6 +24,9 @@
#include <linux/projid.h>
#include <linux/fs_struct.h>
+/* sysctl */
+int unprivileged_userns_clone;
+
static struct kmem_cache *user_ns_cachep __read_mostly;
static DEFINE_MUTEX(userns_state_mutex);
--
2.15.1
From b5202296055dd333db4425120d3f93ef4e6a0573 Mon Sep 17 00:00:00 2001
From: "Jan Alexander Steffens (heftig)" <jan.steffens@gmail.com>
Date: Thu, 7 Dec 2017 13:50:48 +0100
Subject: ZEN: Add CONFIG for unprivileged_userns_clone
This way our default behavior continues to match the vanilla kernel.
---
init/Kconfig | 16 ++++++++++++++++
kernel/user_namespace.c | 4 ++++
2 files changed, 20 insertions(+)
diff --git a/init/Kconfig b/init/Kconfig
index 4592bf7997c0..f3df02990aff 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1004,6 +1004,22 @@ config USER_NS
If unsure, say N.
+config USER_NS_UNPRIVILEGED
+ bool "Allow unprivileged users to create namespaces"
+ default y
+ depends on USER_NS
+ help
+ When disabled, unprivileged users will not be able to create
+ new namespaces. Allowing users to create their own namespaces
+ has been part of several recent local privilege escalation
+ exploits, so if you need user namespaces but are
+ paranoid^Wsecurity-conscious you want to disable this.
+
+ This setting can be overridden at runtime via the
+ kernel.unprivileged_userns_clone sysctl.
+
+ If unsure, say Y.
+
config PID_NS
bool "PID Namespaces"
default y
diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c
index 6b9dbc257e34..107b17f0d528 100644
--- a/kernel/user_namespace.c
+++ b/kernel/user_namespace.c
@@ -27,7 +27,11 @@
#include <linux/sort.h>
/* sysctl */
+#ifdef CONFIG_USER_NS_UNPRIVILEGED
+int unprivileged_userns_clone = 1;
+#else
int unprivileged_userns_clone;
+#endif
static struct kmem_cache *user_ns_cachep __read_mostly;
static DEFINE_MUTEX(userns_state_mutex);

360
linux-tkg/linux-tkg-patches/5.9/0002-clear-patches.patch
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Arjan van de Ven <arjan@linux.intel.com>
Date: Mon, 14 Mar 2016 11:10:58 -0600
Subject: [PATCH] pci pme wakeups
Reduce wakeups for PME checks, which are a workaround for miswired
boards (sadly, too many of them) in laptops.
---
drivers/pci/pci.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index c9338f9..6974fbf 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -62,7 +62,7 @@ struct pci_pme_device {
struct pci_dev *dev;
};
-#define PME_TIMEOUT 1000 /* How long between PME checks */
+#define PME_TIMEOUT 4000 /* How long between PME checks */
static void pci_dev_d3_sleep(struct pci_dev *dev)
{
--
https://clearlinux.org
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Arjan van de Ven <arjan@linux.intel.com>
Date: Sat, 19 Mar 2016 21:32:19 -0400
Subject: [PATCH] intel_idle: tweak cpuidle cstates
Increase target_residency in cpuidle cstate
Tune intel_idle to be a bit less agressive;
Clear linux is cleaner in hygiene (wakupes) than the average linux,
so we can afford changing these in a way that increases
performance while keeping power efficiency
---
drivers/idle/intel_idle.c | 44 +++++++++++++++++++--------------------
1 file changed, 22 insertions(+), 22 deletions(-)
diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c
index f449584..c994d24 100644
--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -531,7 +531,7 @@ static struct cpuidle_state hsw_cstates[] __initdata = {
.desc = "MWAIT 0x01",
.flags = MWAIT2flg(0x01) | CPUIDLE_FLAG_ALWAYS_ENABLE,
.exit_latency = 10,
- .target_residency = 20,
+ .target_residency = 120,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -539,7 +539,7 @@ static struct cpuidle_state hsw_cstates[] __initdata = {
.desc = "MWAIT 0x10",
.flags = MWAIT2flg(0x10) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 33,
- .target_residency = 100,
+ .target_residency = 900,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -547,7 +547,7 @@ static struct cpuidle_state hsw_cstates[] __initdata = {
.desc = "MWAIT 0x20",
.flags = MWAIT2flg(0x20) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 133,
- .target_residency = 400,
+ .target_residency = 1000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -555,7 +555,7 @@ static struct cpuidle_state hsw_cstates[] __initdata = {
.desc = "MWAIT 0x32",
.flags = MWAIT2flg(0x32) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 166,
- .target_residency = 500,
+ .target_residency = 1500,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -563,7 +563,7 @@ static struct cpuidle_state hsw_cstates[] __initdata = {
.desc = "MWAIT 0x40",
.flags = MWAIT2flg(0x40) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 300,
- .target_residency = 900,
+ .target_residency = 2000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -571,7 +571,7 @@ static struct cpuidle_state hsw_cstates[] __initdata = {
.desc = "MWAIT 0x50",
.flags = MWAIT2flg(0x50) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 600,
- .target_residency = 1800,
+ .target_residency = 5000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -579,7 +579,7 @@ static struct cpuidle_state hsw_cstates[] __initdata = {
.desc = "MWAIT 0x60",
.flags = MWAIT2flg(0x60) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 2600,
- .target_residency = 7700,
+ .target_residency = 9000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -599,7 +599,7 @@ static struct cpuidle_state bdw_cstates[] __initdata = {
.desc = "MWAIT 0x01",
.flags = MWAIT2flg(0x01) | CPUIDLE_FLAG_ALWAYS_ENABLE,
.exit_latency = 10,
- .target_residency = 20,
+ .target_residency = 120,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -607,7 +607,7 @@ static struct cpuidle_state bdw_cstates[] __initdata = {
.desc = "MWAIT 0x10",
.flags = MWAIT2flg(0x10) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 40,
- .target_residency = 100,
+ .target_residency = 1000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -615,7 +615,7 @@ static struct cpuidle_state bdw_cstates[] __initdata = {
.desc = "MWAIT 0x20",
.flags = MWAIT2flg(0x20) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 133,
- .target_residency = 400,
+ .target_residency = 1000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -623,7 +623,7 @@ static struct cpuidle_state bdw_cstates[] __initdata = {
.desc = "MWAIT 0x32",
.flags = MWAIT2flg(0x32) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 166,
- .target_residency = 500,
+ .target_residency = 2000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -631,7 +631,7 @@ static struct cpuidle_state bdw_cstates[] __initdata = {
.desc = "MWAIT 0x40",
.flags = MWAIT2flg(0x40) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 300,
- .target_residency = 900,
+ .target_residency = 4000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -639,7 +639,7 @@ static struct cpuidle_state bdw_cstates[] __initdata = {
.desc = "MWAIT 0x50",
.flags = MWAIT2flg(0x50) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 600,
- .target_residency = 1800,
+ .target_residency = 7000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -647,7 +647,7 @@ static struct cpuidle_state bdw_cstates[] __initdata = {
.desc = "MWAIT 0x60",
.flags = MWAIT2flg(0x60) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 2600,
- .target_residency = 7700,
+ .target_residency = 9000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -668,7 +668,7 @@ static struct cpuidle_state skl_cstates[] __initdata = {
.desc = "MWAIT 0x01",
.flags = MWAIT2flg(0x01) | CPUIDLE_FLAG_ALWAYS_ENABLE,
.exit_latency = 10,
- .target_residency = 20,
+ .target_residency = 120,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -676,7 +676,7 @@ static struct cpuidle_state skl_cstates[] __initdata = {
.desc = "MWAIT 0x10",
.flags = MWAIT2flg(0x10) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 70,
- .target_residency = 100,
+ .target_residency = 1000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -684,7 +684,7 @@ static struct cpuidle_state skl_cstates[] __initdata = {
.desc = "MWAIT 0x20",
.flags = MWAIT2flg(0x20) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 85,
- .target_residency = 200,
+ .target_residency = 600,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -692,7 +692,7 @@ static struct cpuidle_state skl_cstates[] __initdata = {
.desc = "MWAIT 0x33",
.flags = MWAIT2flg(0x33) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 124,
- .target_residency = 800,
+ .target_residency = 3000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -700,7 +700,7 @@ static struct cpuidle_state skl_cstates[] __initdata = {
.desc = "MWAIT 0x40",
.flags = MWAIT2flg(0x40) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 200,
- .target_residency = 800,
+ .target_residency = 3200,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -708,7 +708,7 @@ static struct cpuidle_state skl_cstates[] __initdata = {
.desc = "MWAIT 0x50",
.flags = MWAIT2flg(0x50) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 480,
- .target_residency = 5000,
+ .target_residency = 9000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -716,7 +716,7 @@ static struct cpuidle_state skl_cstates[] __initdata = {
.desc = "MWAIT 0x60",
.flags = MWAIT2flg(0x60) | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 890,
- .target_residency = 5000,
+ .target_residency = 9000,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
@@ -737,7 +737,7 @@ static struct cpuidle_state skx_cstates[] __initdata = {
.desc = "MWAIT 0x01",
.flags = MWAIT2flg(0x01) | CPUIDLE_FLAG_ALWAYS_ENABLE,
.exit_latency = 10,
- .target_residency = 20,
+ .target_residency = 300,
.enter = &intel_idle,
.enter_s2idle = intel_idle_s2idle, },
{
--
https://clearlinux.org
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Arjan van de Ven <arjan@linux.intel.com>
Date: Fri, 6 Jan 2017 15:34:09 +0000
Subject: [PATCH] ipv4/tcp: allow the memory tuning for tcp to go a little
bigger than default
---
net/ipv4/tcp.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 30c1142..4345075 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -4201,8 +4201,8 @@ void __init tcp_init(void)
tcp_init_mem();
/* Set per-socket limits to no more than 1/128 the pressure threshold */
limit = nr_free_buffer_pages() << (PAGE_SHIFT - 7);
- max_wshare = min(4UL*1024*1024, limit);
- max_rshare = min(6UL*1024*1024, limit);
+ max_wshare = min(16UL*1024*1024, limit);
+ max_rshare = min(16UL*1024*1024, limit);
init_net.ipv4.sysctl_tcp_wmem[0] = SK_MEM_QUANTUM;
init_net.ipv4.sysctl_tcp_wmem[1] = 16*1024;
--
https://clearlinux.org
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Arjan van de Ven <arjan@linux.intel.com>
Date: Sun, 18 Feb 2018 23:35:41 +0000
Subject: [PATCH] locking: rwsem: spin faster
tweak rwsem owner spinning a bit
---
kernel/locking/rwsem.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/kernel/locking/rwsem.c b/kernel/locking/rwsem.c
index f11b9bd..1bbfcc1 100644
--- a/kernel/locking/rwsem.c
+++ b/kernel/locking/rwsem.c
@@ -717,6 +717,7 @@ rwsem_spin_on_owner(struct rw_semaphore *sem, unsigned long nonspinnable)
struct task_struct *new, *owner;
unsigned long flags, new_flags;
enum owner_state state;
+ int i = 0;
owner = rwsem_owner_flags(sem, &flags);
state = rwsem_owner_state(owner, flags, nonspinnable);
@@ -750,7 +751,8 @@ rwsem_spin_on_owner(struct rw_semaphore *sem, unsigned long nonspinnable)
break;
}
- cpu_relax();
+ if (i++ > 1000)
+ cpu_relax();
}
rcu_read_unlock();
--
https://clearlinux.org
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Arjan van de Ven <arjan@linux.intel.com>
Date: Thu, 2 Jun 2016 23:36:32 -0500
Subject: [PATCH] initialize ata before graphics
ATA init is the long pole in the boot process, and its asynchronous.
move the graphics init after it so that ata and graphics initialize
in parallel
---
drivers/Makefile | 15 ++++++++-------
1 file changed, 8 insertions(+), 7 deletions(-)
diff --git a/drivers/Makefile b/drivers/Makefile
index c0cd1b9..af1e2fb 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -59,15 +59,8 @@ obj-y += char/
# iommu/ comes before gpu as gpu are using iommu controllers
obj-y += iommu/
-# gpu/ comes after char for AGP vs DRM startup and after iommu
-obj-y += gpu/
-
obj-$(CONFIG_CONNECTOR) += connector/
-# i810fb and intelfb depend on char/agp/
-obj-$(CONFIG_FB_I810) += video/fbdev/i810/
-obj-$(CONFIG_FB_INTEL) += video/fbdev/intelfb/
-
obj-$(CONFIG_PARPORT) += parport/
obj-$(CONFIG_NVM) += lightnvm/
obj-y += base/ block/ misc/ mfd/ nfc/
@@ -80,6 +73,14 @@ obj-$(CONFIG_IDE) += ide/
obj-y += scsi/
obj-y += nvme/
obj-$(CONFIG_ATA) += ata/
+
+# gpu/ comes after char for AGP vs DRM startup and after iommu
+obj-y += gpu/
+
+# i810fb and intelfb depend on char/agp/
+obj-$(CONFIG_FB_I810) += video/fbdev/i810/
+obj-$(CONFIG_FB_INTEL) += video/fbdev/intelfb/
+
obj-$(CONFIG_TARGET_CORE) += target/
obj-$(CONFIG_MTD) += mtd/
obj-$(CONFIG_SPI) += spi/
--
https://clearlinux.org

708
linux-tkg/linux-tkg-patches/5.9/0003-glitched-base.patch
Unescape Escape View File

@ -0,0 +1,708 @@
From f7f49141a5dbe9c99d78196b58c44307fb2e6be3 Mon Sep 17 00:00:00 2001
From: Tk-Glitch <ti3nou@gmail.com>
Date: Wed, 4 Jul 2018 04:30:08 +0200
Subject: [PATCH 01/17] glitched
---
scripts/mkcompile_h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/scripts/mkcompile_h b/scripts/mkcompile_h
index baf3ab8d9d49..854e32e6aec7 100755
--- a/scripts/mkcompile_h
+++ b/scripts/mkcompile_h
@@ -41,8 +41,8 @@ else
fi
UTS_VERSION="#$VERSION"
-CONFIG_FLAGS=""
-if [ -n "$SMP" ] ; then CONFIG_FLAGS="SMP"; fi
+CONFIG_FLAGS="TKG"
+if [ -n "$SMP" ] ; then CONFIG_FLAGS="$CONFIG_FLAGS SMP"; fi
if [ -n "$PREEMPT" ] ; then CONFIG_FLAGS="$CONFIG_FLAGS PREEMPT"; fi
if [ -n "$PREEMPT_RT" ] ; then CONFIG_FLAGS="$CONFIG_FLAGS PREEMPT_RT"; fi
--
2.28.0
From c304f43d14e98d4bf1215fc10bc5012f554bdd8a Mon Sep 17 00:00:00 2001
From: Alexandre Frade <admfrade@gmail.com>
Date: Mon, 29 Jan 2018 16:59:22 +0000
Subject: [PATCH 02/17] dcache: cache_pressure = 50 decreases the rate at which
VFS caches are reclaimed
Signed-off-by: Alexandre Frade <admfrade@gmail.com>
---
fs/dcache.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/dcache.c b/fs/dcache.c
index 361ea7ab30ea..0c5cf69b241a 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -71,7 +71,7 @@
* If no ancestor relationship:
* arbitrary, since it's serialized on rename_lock
*/
-int sysctl_vfs_cache_pressure __read_mostly = 100;
+int sysctl_vfs_cache_pressure __read_mostly = 50;
EXPORT_SYMBOL_GPL(sysctl_vfs_cache_pressure);
__cacheline_aligned_in_smp DEFINE_SEQLOCK(rename_lock);
--
2.28.0
From 28f32f59d9d55ac7ec3a20b79bdd02d2a0a5f7e1 Mon Sep 17 00:00:00 2001
From: Alexandre Frade <admfrade@gmail.com>
Date: Mon, 29 Jan 2018 18:29:13 +0000
Subject: [PATCH 03/17] sched/core: nr_migrate = 128 increases number of tasks
to iterate in a single balance run.
Signed-off-by: Alexandre Frade <admfrade@gmail.com>
---
kernel/sched/core.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index f788cd61df21..2bfbb4213707 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -59,7 +59,7 @@ const_debug unsigned int sysctl_sched_features =
* Number of tasks to iterate in a single balance run.
* Limited because this is done with IRQs disabled.
*/
-const_debug unsigned int sysctl_sched_nr_migrate = 32;
+const_debug unsigned int sysctl_sched_nr_migrate = 128;
/*
* period over which we measure -rt task CPU usage in us.
@@ -71,9 +71,9 @@ __read_mostly int scheduler_running;
/*
* part of the period that we allow rt tasks to run in us.
- * default: 0.95s
+ * XanMod default: 0.98s
*/
-int sysctl_sched_rt_runtime = 950000;
+int sysctl_sched_rt_runtime = 980000;
/*
* __task_rq_lock - lock the rq @p resides on.
--
2.28.0
From acc49f33a10f61dc66c423888cbb883ba46710e4 Mon Sep 17 00:00:00 2001
From: Alexandre Frade <admfrade@gmail.com>
Date: Mon, 29 Jan 2018 17:41:29 +0000
Subject: [PATCH 04/17] scripts: disable the localversion "+" tag of a git repo
Signed-off-by: Alexandre Frade <admfrade@gmail.com>
---
scripts/setlocalversion | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/scripts/setlocalversion b/scripts/setlocalversion
index 20f2efd57b11..0552d8b9f582 100755
--- a/scripts/setlocalversion
+++ b/scripts/setlocalversion
@@ -54,7 +54,7 @@ scm_version()
# If only the short version is requested, don't bother
# running further git commands
if $short; then
- echo "+"
+ # echo "+"
return
fi
# If we are past a tagged commit (like
--
2.28.0
From 61fcb33fb0de8bc0f060e0a1ada38ed149217f4d Mon Sep 17 00:00:00 2001
From: Oleksandr Natalenko <oleksandr@redhat.com>
Date: Wed, 11 Dec 2019 11:46:19 +0100
Subject: [PATCH 05/17] init/Kconfig: enable -O3 for all arches
Building a kernel with -O3 may help in hunting bugs like [1] and thus
using this switch should not be restricted to one specific arch only.
With that, lets expose it for everyone.
[1] https://lore.kernel.org/lkml/673b885183fb64f1cbb3ed2387524077@natalenko.name/
Signed-off-by: Oleksandr Natalenko <oleksandr@redhat.com>
---
init/Kconfig | 1 -
1 file changed, 1 deletion(-)
diff --git a/init/Kconfig b/init/Kconfig
index 0498af567f70..3ae8678e1145 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1278,7 +1278,6 @@ config CC_OPTIMIZE_FOR_PERFORMANCE
config CC_OPTIMIZE_FOR_PERFORMANCE_O3
bool "Optimize more for performance (-O3)"
- depends on ARC
help
Choosing this option will pass "-O3" to your compiler to optimize
the kernel yet more for performance.
--
2.28.0
From 360c6833e07cc9fdef5746f6bc45bdbc7212288d Mon Sep 17 00:00:00 2001
From: "Jan Alexander Steffens (heftig)" <jan.steffens@gmail.com>
Date: Fri, 26 Oct 2018 11:22:33 +0100
Subject: [PATCH 06/17] infiniband: Fix __read_overflow2 error with -O3
inlining
---
drivers/infiniband/core/addr.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/infiniband/core/addr.c b/drivers/infiniband/core/addr.c
index 3a98439bba83..6efc4f907f58 100644
--- a/drivers/infiniband/core/addr.c
+++ b/drivers/infiniband/core/addr.c
@@ -820,6 +820,7 @@ int rdma_addr_find_l2_eth_by_grh(const union ib_gid *sgid,
union {
struct sockaddr_in _sockaddr_in;
struct sockaddr_in6 _sockaddr_in6;
+ struct sockaddr_ib _sockaddr_ib;
} sgid_addr, dgid_addr;
int ret;
--
2.28.0
From f85ed068b4d0e6c31edce8574a95757a60e58b87 Mon Sep 17 00:00:00 2001
From: Etienne Juvigny <Ti3noU@gmail.com>
Date: Mon, 3 Sep 2018 17:36:25 +0200
Subject: [PATCH 07/17] Zenify & stuff
---
init/Kconfig | 32 ++++++++++++++++++++++++++++++++
kernel/sched/fair.c | 25 +++++++++++++++++++++++++
mm/page-writeback.c | 8 ++++++++
3 files changed, 65 insertions(+)
diff --git a/init/Kconfig b/init/Kconfig
index 3ae8678e1145..da708eed0f1e 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -92,6 +92,38 @@ config THREAD_INFO_IN_TASK
menu "General setup"
+config ZENIFY
+ bool "A selection of patches from Zen/Liquorix kernel and additional tweaks for a better gaming experience"
+ default y
+ help
+ Tunes the kernel for responsiveness at the cost of throughput and power usage.
+
+ --- Virtual Memory Subsystem ---------------------------
+
+ Mem dirty before bg writeback..: 10 % -> 20 %
+ Mem dirty before sync writeback: 20 % -> 50 %
+
+ --- Block Layer ----------------------------------------
+
+ Queue depth...............: 128 -> 512
+ Default MQ scheduler......: mq-deadline -> bfq
+
+ --- CFS CPU Scheduler ----------------------------------
+
+ Scheduling latency.............: 6 -> 3 ms
+ Minimal granularity............: 0.75 -> 0.3 ms
+ Wakeup granularity.............: 1 -> 0.5 ms
+ CPU migration cost.............: 0.5 -> 0.25 ms
+ Bandwidth slice size...........: 5 -> 3 ms
+ Ondemand fine upscaling limit..: 95 % -> 85 %
+
+ --- MuQSS CPU Scheduler --------------------------------
+
+ Scheduling interval............: 6 -> 3 ms
+ ISO task max realtime use......: 70 % -> 25 %
+ Ondemand coarse upscaling limit: 80 % -> 45 %
+ Ondemand fine upscaling limit..: 95 % -> 45 %
+
config BROKEN
bool
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 6b3b59cc51d6..2a0072192c3d 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -37,8 +37,13 @@
*
* (default: 6ms * (1 + ilog(ncpus)), units: nanoseconds)
*/
+#ifdef CONFIG_ZENIFY
+unsigned int sysctl_sched_latency = 3000000ULL;
+static unsigned int normalized_sysctl_sched_latency = 3000000ULL;
+#else
unsigned int sysctl_sched_latency = 6000000ULL;
static unsigned int normalized_sysctl_sched_latency = 6000000ULL;
+#endif
/*
* The initial- and re-scaling of tunables is configurable
@@ -58,13 +63,22 @@ enum sched_tunable_scaling sysctl_sched_tunable_scaling = SCHED_TUNABLESCALING_L
*
* (default: 0.75 msec * (1 + ilog(ncpus)), units: nanoseconds)
*/
+#ifdef CONFIG_ZENIFY
+unsigned int sysctl_sched_min_granularity = 300000ULL;
+static unsigned int normalized_sysctl_sched_min_granularity = 300000ULL;
+#else
unsigned int sysctl_sched_min_granularity = 750000ULL;
static unsigned int normalized_sysctl_sched_min_granularity = 750000ULL;
+#endif
/*
* This value is kept at sysctl_sched_latency/sysctl_sched_min_granularity
*/
+#ifdef CONFIG_ZENIFY
+static unsigned int sched_nr_latency = 10;
+#else
static unsigned int sched_nr_latency = 8;
+#endif
/*
* After fork, child runs first. If set to 0 (default) then
@@ -81,10 +95,17 @@ unsigned int sysctl_sched_child_runs_first __read_mostly;
*
* (default: 1 msec * (1 + ilog(ncpus)), units: nanoseconds)
*/
+#ifdef CONFIG_ZENIFY
+unsigned int sysctl_sched_wakeup_granularity = 500000UL;
+static unsigned int normalized_sysctl_sched_wakeup_granularity = 500000UL;
+
+const_debug unsigned int sysctl_sched_migration_cost = 50000UL;
+#else
unsigned int sysctl_sched_wakeup_granularity = 1000000UL;
static unsigned int normalized_sysctl_sched_wakeup_granularity = 1000000UL;
const_debug unsigned int sysctl_sched_migration_cost = 500000UL;
+#endif
int sched_thermal_decay_shift;
static int __init setup_sched_thermal_decay_shift(char *str)
@@ -128,8 +149,12 @@ int __weak arch_asym_cpu_priority(int cpu)
*
* (default: 5 msec, units: microseconds)
*/
+#ifdef CONFIG_ZENIFY
+unsigned int sysctl_sched_cfs_bandwidth_slice = 3000UL;
+#else
unsigned int sysctl_sched_cfs_bandwidth_slice = 5000UL;
#endif
+#endif
static inline void update_load_add(struct load_weight *lw, unsigned long inc)
{
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 28b3e7a67565..01a1aef2b9b1 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -71,7 +71,11 @@ static long ratelimit_pages = 32;
/*
* Start background writeback (via writeback threads) at this percentage
*/
+#ifdef CONFIG_ZENIFY
+int dirty_background_ratio = 20;
+#else
int dirty_background_ratio = 10;
+#endif
/*
* dirty_background_bytes starts at 0 (disabled) so that it is a function of
@@ -88,7 +92,11 @@ int vm_highmem_is_dirtyable;
/*
* The generator of dirty data starts writeback at this percentage
*/
+#ifdef CONFIG_ZENIFY
+int vm_dirty_ratio = 50;
+#else
int vm_dirty_ratio = 20;
+#endif
/*
* vm_dirty_bytes starts at 0 (disabled) so that it is a function of
--
2.28.0
From e92e67143385cf285851e12aa8b7f083dd38dd24 Mon Sep 17 00:00:00 2001
From: Steven Barrett <damentz@liquorix.net>
Date: Sun, 16 Jan 2011 18:57:32 -0600
Subject: [PATCH 08/17] ZEN: Allow TCP YeAH as default congestion control
4.4: In my tests YeAH dramatically slowed down transfers over a WLAN,
reducing throughput from ~65Mbps (CUBIC) to ~7MBps (YeAH) over 10
seconds (netperf TCP_STREAM) including long stalls.
Be careful when choosing this. ~heftig
---
net/ipv4/Kconfig | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig
index e64e59b536d3..bfb55ef7ebbe 100644
--- a/net/ipv4/Kconfig
+++ b/net/ipv4/Kconfig
@@ -691,6 +691,9 @@ choice
config DEFAULT_VEGAS
bool "Vegas" if TCP_CONG_VEGAS=y
+ config DEFAULT_YEAH
+ bool "YeAH" if TCP_CONG_YEAH=y
+
config DEFAULT_VENO
bool "Veno" if TCP_CONG_VENO=y
@@ -724,6 +727,7 @@ config DEFAULT_TCP_CONG
default "htcp" if DEFAULT_HTCP
default "hybla" if DEFAULT_HYBLA
default "vegas" if DEFAULT_VEGAS
+ default "yeah" if DEFAULT_YEAH
default "westwood" if DEFAULT_WESTWOOD
default "veno" if DEFAULT_VENO
default "reno" if DEFAULT_RENO
--
2.28.0
From 76dbe7477bfde1b5e8bf29a71b5af7ab2be9b98e Mon Sep 17 00:00:00 2001
From: Steven Barrett <steven@liquorix.net>
Date: Wed, 28 Nov 2018 19:01:27 -0600
Subject: [PATCH 09/17] zen: Use [defer+madvise] as default khugepaged defrag
strategy
For some reason, the default strategy to respond to THP fault fallbacks
is still just madvise, meaning stall if the program wants transparent
hugepages, but don't trigger a background reclaim / compaction if THP
begins to fail allocations. This creates a snowball affect where we
still use the THP code paths, but we almost always fail once a system
has been active and busy for a while.
The option "defer" was created for interactive systems where THP can
still improve performance. If we have to fallback to a regular page due
to an allocation failure or anything else, we will trigger a background
reclaim and compaction so future THP attempts succeed and previous
attempts eventually have their smaller pages combined without stalling
running applications.
We still want madvise to stall applications that explicitely want THP,
so defer+madvise _does_ make a ton of sense. Make it the default for
interactive systems, especially if the kernel maintainer left
transparent hugepages on "always".
Reasoning and details in the original patch: https://lwn.net/Articles/711248/
---
mm/huge_memory.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 74300e337c3c..9277f22c10a7 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -53,7 +53,11 @@ unsigned long transparent_hugepage_flags __read_mostly =
#ifdef CONFIG_TRANSPARENT_HUGEPAGE_MADVISE
(1<<TRANSPARENT_HUGEPAGE_REQ_MADV_FLAG)|
#endif
+#ifdef CONFIG_ZENIFY
+ (1<<TRANSPARENT_HUGEPAGE_DEFRAG_KSWAPD_OR_MADV_FLAG)|
+#else
(1<<TRANSPARENT_HUGEPAGE_DEFRAG_REQ_MADV_FLAG)|
+#endif
(1<<TRANSPARENT_HUGEPAGE_DEFRAG_KHUGEPAGED_FLAG)|
(1<<TRANSPARENT_HUGEPAGE_USE_ZERO_PAGE_FLAG);
--
2.28.0
From 2b65a1329cb220b43c19c4d0de5833fae9e2b22d Mon Sep 17 00:00:00 2001
From: Alexandre Frade <admfrade@gmail.com>
Date: Wed, 24 Oct 2018 16:58:52 -0300
Subject: [PATCH 10/17] net/sched: allow configuring cake qdisc as default
Signed-off-by: Alexandre Frade <admfrade@gmail.com>
---
net/sched/Kconfig | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/net/sched/Kconfig b/net/sched/Kconfig
index 84badf00647e..6a922bca9f39 100644
--- a/net/sched/Kconfig
+++ b/net/sched/Kconfig
@@ -471,6 +471,9 @@ choice
config DEFAULT_SFQ
bool "Stochastic Fair Queue" if NET_SCH_SFQ
+ config DEFAULT_CAKE
+ bool "Common Applications Kept Enhanced" if NET_SCH_CAKE
+
config DEFAULT_PFIFO_FAST
bool "Priority FIFO Fast"
endchoice
@@ -481,6 +484,7 @@ config DEFAULT_NET_SCH
default "fq" if DEFAULT_FQ
default "fq_codel" if DEFAULT_FQ_CODEL
default "sfq" if DEFAULT_SFQ
+ default "cake" if DEFAULT_CAKE
default "pfifo_fast"
endif
--
2.28.0
From 816ee502759e954304693813bd03d94986b28dba Mon Sep 17 00:00:00 2001
From: Tk-Glitch <ti3nou@gmail.com>
Date: Mon, 18 Feb 2019 17:40:57 +0100
Subject: [PATCH 11/17] mm: Set watermark_scale_factor to 200 (from 10)
Multiple users have reported it's helping reducing/eliminating stuttering
with DXVK.
---
mm/page_alloc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 898ff44f2c7b..e72074034793 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -330,7 +330,7 @@ int watermark_boost_factor __read_mostly;
#else
int watermark_boost_factor __read_mostly = 15000;
#endif
-int watermark_scale_factor = 10;
+int watermark_scale_factor = 200;
static unsigned long nr_kernel_pages __initdata;
static unsigned long nr_all_pages __initdata;
--
2.28.0
From 90240bcd90a568878738e66c0d45bed3e38e347b Mon Sep 17 00:00:00 2001
From: Tk-Glitch <ti3nou@gmail.com>
Date: Fri, 19 Apr 2019 12:33:38 +0200
Subject: [PATCH 12/17] Set vm.max_map_count to 262144 by default
The value is still pretty low, and AMD64-ABI and ELF extended numbering
supports that, so we should be fine on modern x86 systems.
This fixes crashes in some applications using more than 65535 vmas (also
affects some windows games running in wine, such as Star Citizen).
---
include/linux/mm.h | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index bc05c3588aa3..b0cefe94920d 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -190,8 +190,7 @@ static inline void __mm_zero_struct_page(struct page *page)
* not a hard limit any more. Although some userspace tools can be surprised by
* that.
*/
-#define MAPCOUNT_ELF_CORE_MARGIN (5)
-#define DEFAULT_MAX_MAP_COUNT (USHRT_MAX - MAPCOUNT_ELF_CORE_MARGIN)
+#define DEFAULT_MAX_MAP_COUNT (262144)
extern int sysctl_max_map_count;
--
2.28.0
From 3a34034dba5efe91bcec491efe8c66e8087f509b Mon Sep 17 00:00:00 2001
From: Tk-Glitch <ti3nou@gmail.com>
Date: Mon, 27 Jul 2020 00:19:18 +0200
Subject: [PATCH 13/17] mm: bump DEFAULT_MAX_MAP_COUNT
Some games such as Detroit: Become Human tend to be very crash prone with
lower values.
---
include/linux/mm.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index b0cefe94920d..890165099b07 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -190,7 +190,7 @@ static inline void __mm_zero_struct_page(struct page *page)
* not a hard limit any more. Although some userspace tools can be surprised by
* that.
*/
-#define DEFAULT_MAX_MAP_COUNT (262144)
+#define DEFAULT_MAX_MAP_COUNT (524288)
extern int sysctl_max_map_count;
--
2.28.0
From 977812938da7c7226415778c340832141d9278b7 Mon Sep 17 00:00:00 2001
From: Alexandre Frade <admfrade@gmail.com>
Date: Mon, 25 Nov 2019 15:13:06 -0300
Subject: [PATCH 14/17] elevator: set default scheduler to bfq for blk-mq
Signed-off-by: Alexandre Frade <admfrade@gmail.com>
---
block/elevator.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/block/elevator.c b/block/elevator.c
index 4eab3d70e880..79669aa39d79 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -623,15 +623,15 @@ static inline bool elv_support_iosched(struct request_queue *q)
}
/*
- * For single queue devices, default to using mq-deadline. If we have multiple
- * queues or mq-deadline is not available, default to "none".
+ * For single queue devices, default to using bfq. If we have multiple
+ * queues or bfq is not available, default to "none".
*/
static struct elevator_type *elevator_get_default(struct request_queue *q)
{
if (q->nr_hw_queues != 1)
return NULL;
- return elevator_get(q, "mq-deadline", false);
+ return elevator_get(q, "bfq", false);
}
/*
--
2.28.0
From e2111bc5989131c675659d40e0cc4f214df2f990 Mon Sep 17 00:00:00 2001
From: Alexandre Frade <admfrade@gmail.com>
Date: Fri, 10 May 2019 16:45:59 -0300
Subject: [PATCH 15/17] block: set rq_affinity = 2 for full multithreading I/O
requests
Signed-off-by: Alexandre Frade <admfrade@gmail.com>
---
include/linux/blkdev.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 28efe374a2e1..d4e5d35d2ece 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -624,7 +624,8 @@ struct request_queue {
#define QUEUE_FLAG_RQ_ALLOC_TIME 27 /* record rq->alloc_time_ns */
#define QUEUE_FLAG_MQ_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \
- (1 << QUEUE_FLAG_SAME_COMP))
+ (1 << QUEUE_FLAG_SAME_COMP) | \
+ (1 << QUEUE_FLAG_SAME_FORCE))
void blk_queue_flag_set(unsigned int flag, struct request_queue *q);
void blk_queue_flag_clear(unsigned int flag, struct request_queue *q);
--
2.28.0
From 3c229f434aca65c4ca61772bc03c3e0370817b92 Mon Sep 17 00:00:00 2001
From: Alexandre Frade <kernel@xanmod.org>
Date: Mon, 3 Aug 2020 17:05:04 +0000
Subject: [PATCH 16/17] mm: set 2 megabytes for address_space-level file
read-ahead pages size
Signed-off-by: Alexandre Frade <kernel@xanmod.org>
---
include/linux/pagemap.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index cf2468da68e9..007dea784451 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -655,7 +655,7 @@ int replace_page_cache_page(struct page *old, struct page *new, gfp_t gfp_mask);
void delete_from_page_cache_batch(struct address_space *mapping,
struct pagevec *pvec);
-#define VM_READAHEAD_PAGES (SZ_128K / PAGE_SIZE)
+#define VM_READAHEAD_PAGES (SZ_2M / PAGE_SIZE)
void page_cache_sync_readahead(struct address_space *, struct file_ra_state *,
struct file *, pgoff_t index, unsigned long req_count);
--
2.28.0
From 716f41cf6631f3a85834dcb67b4ce99185b6387f Mon Sep 17 00:00:00 2001
From: Steven Barrett <steven@liquorix.net>
Date: Wed, 15 Jan 2020 20:43:56 -0600
Subject: [PATCH 17/17] ZEN: intel-pstate: Implement "enable" parameter
If intel-pstate is compiled into the kernel, it will preempt the loading
of acpi-cpufreq so you can take advantage of hardware p-states without
any friction.
However, intel-pstate is not completely superior to cpufreq's ondemand
for one reason. There's no concept of an up_threshold property.
In ondemand, up_threshold essentially reduces the maximum utilization to
compare against, allowing you to hit max frequencies and turbo boost
from a much lower core utilization.
With intel-pstate, you have the concept of minimum and maximum
performance, but no tunable that lets you define, maximum frequency
means 50% core utilization. For just this oversight, there's reasons
you may want ondemand.
Lets support setting "enable" in kernel boot parameters. This lets
kernel maintainers include "intel_pstate=disable" statically in the
static boot parameters, but let users of the kernel override this
selection.
---
Documentation/admin-guide/kernel-parameters.txt | 3 +++
drivers/cpufreq/intel_pstate.c | 2 ++
2 files changed, 5 insertions(+)
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index fb95fad81c79..3e92fee81e33 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -1857,6 +1857,9 @@
disable
Do not enable intel_pstate as the default
scaling driver for the supported processors
+ enable
+ Enable intel_pstate in-case "disable" was passed
+ previously in the kernel boot parameters
passive
Use intel_pstate as a scaling driver, but configure it
to work with generic cpufreq governors (instead of
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 36a469150ff9..aee891c9b78a 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -2845,6 +2845,8 @@ static int __init intel_pstate_setup(char *str)
pr_info("HWP disabled\n");
no_hwp = 1;
}
+ if (!strcmp(str, "enable"))
+ no_load = 0;
if (!strcmp(str, "force"))
force_load = 1;
if (!strcmp(str, "hwp_only"))
--
2.28.0

72
linux-tkg/linux-tkg-patches/5.9/0003-glitched-cfs.patch
Unescape Escape View File

@ -0,0 +1,72 @@
diff --git a/kernel/Kconfig.hz b/kernel/Kconfig.hz
index 2a202a846757..1d9c7ed79b11 100644
--- a/kernel/Kconfig.hz
+++ b/kernel/Kconfig.hz
@@ -4,7 +4,7 @@
choice
prompt "Timer frequency"
- default HZ_250
+ default HZ_500
help
Allows the configuration of the timer frequency. It is customary
to have the timer interrupt run at 1000 Hz but 100 Hz may be more
@@ -39,6 +39,13 @@ choice
on SMP and NUMA systems and exactly dividing by both PAL and
NTSC frame rates for video and multimedia work.
+ config HZ_500
+ bool "500 HZ"
+ help
+ 500 Hz is a balanced timer frequency. Provides fast interactivity
+ on desktops with great smoothness without increasing CPU power
+ consumption and sacrificing the battery life on laptops.
+
config HZ_1000
bool "1000 HZ"
help
@@ -52,6 +59,7 @@ config HZ
default 100 if HZ_100
default 250 if HZ_250
default 300 if HZ_300
+ default 500 if HZ_500
default 1000 if HZ_1000
config SCHED_HRTICK
diff --git a/kernel/Kconfig.hz b/kernel/Kconfig.hz
index 2a202a846757..1d9c7ed79b11 100644
--- a/kernel/Kconfig.hz
+++ b/kernel/Kconfig.hz
@@ -4,7 +4,7 @@
choice
prompt "Timer frequency"
- default HZ_500
+ default HZ_750
help
Allows the configuration of the timer frequency. It is customary
to have the timer interrupt run at 1000 Hz but 100 Hz may be more
@@ -46,6 +46,13 @@ choice
on desktops with great smoothness without increasing CPU power
consumption and sacrificing the battery life on laptops.
+ config HZ_750
+ bool "750 HZ"
+ help
+ 750 Hz is a good timer frequency for desktops. Provides fast
+ interactivity with great smoothness without sacrificing too
+ much throughput.
+
config HZ_1000
bool "1000 HZ"
help
@@ -60,6 +67,7 @@ config HZ
default 250 if HZ_250
default 300 if HZ_300
default 500 if HZ_500
+ default 750 if HZ_750
default 1000 if HZ_1000
config SCHED_HRTICK

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From f7f49141a5dbe9c99d78196b58c44307fb2e6be3 Mon Sep 17 00:00:00 2001
From: Tk-Glitch <ti3nou@gmail.com>
Date: Wed, 4 Jul 2018 04:30:08 +0200
Subject: glitched - MuQSS
diff --git a/kernel/sched/MuQSS.c b/kernel/sched/MuQSS.c
index 84a1d08d68551..57c3036a68952 100644
--- a/kernel/sched/MuQSS.c
+++ b/kernel/sched/MuQSS.c
@@ -163,7 +167,11 @@ int sched_interactive __read_mostly = 1;
* are allowed to run five seconds as real time tasks. This is the total over
* all online cpus.
*/
+#ifdef CONFIG_ZENIFY
+int sched_iso_cpu __read_mostly = 25;
+#else
int sched_iso_cpu __read_mostly = 70;
+#endif
/*
* sched_yield_type - Choose what sort of yield sched_yield will perform.
diff --git a/kernel/Kconfig.hz b/kernel/Kconfig.hz
index 2a202a846757..1d9c7ed79b11 100644
--- a/kernel/Kconfig.hz
+++ b/kernel/Kconfig.hz
@@ -5,7 +5,7 @@
choice
prompt "Timer frequency"
default HZ_100 if SCHED_MUQSS
- default HZ_250_NODEF if !SCHED_MUQSS
+ default HZ_500_NODEF if !SCHED_MUQSS
help
Allows the configuration of the timer frequency. It is customary
to have the timer interrupt run at 1000 Hz but 100 Hz may be more
@@ -50,6 +50,20 @@ choice
on SMP and NUMA systems and exactly dividing by both PAL and
NTSC frame rates for video and multimedia work.
+ config HZ_500_NODEF
+ bool "500 HZ"
+ help
+ 500 Hz is a good timer frequency for desktops. Provides fast
+ interactivity with great smoothness without sacrificing too
+ much throughput.
+
+ config HZ_750_NODEF
+ bool "750 HZ"
+ help
+ 750 Hz is a good timer frequency for desktops. Provides fast
+ interactivity with great smoothness without sacrificing too
+ much throughput.
+
config HZ_1000_NODEF
bool "1000 HZ"
help
@@ -63,6 +70,8 @@ config HZ
default 100 if HZ_100
default 250 if HZ_250_NODEF
default 300 if HZ_300_NODEF
+ default 500 if HZ_500_NODEF
+ default 750 if HZ_750_NODEF
default 1000 if HZ_1000_NODEF
config SCHED_HRTICK
diff --git a/Makefile b/Makefile
index d4d36c61940b..4a9dfe471f1f 100644
--- a/Makefile
+++ b/Makefile
@@ -15,7 +15,6 @@ NAME = Kleptomaniac Octopus
CKVERSION = -ck1
CKNAME = MuQSS Powered
-EXTRAVERSION := $(EXTRAVERSION)$(CKVERSION)
# We are using a recursive build, so we need to do a little thinking
# to get the ordering right.

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linux-tkg/linux-tkg-patches/5.9/0004-glitched-ondemand-muqss.patch
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diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index 6b423eebfd5d..61e3271675d6 100644
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -21,10 +21,10 @@
#include "cpufreq_ondemand.h"
/* On-demand governor macros */
-#define DEF_FREQUENCY_UP_THRESHOLD (80)
-#define DEF_SAMPLING_DOWN_FACTOR (1)
+#define DEF_FREQUENCY_UP_THRESHOLD (45)
+#define DEF_SAMPLING_DOWN_FACTOR (5)
#define MAX_SAMPLING_DOWN_FACTOR (100000)
-#define MICRO_FREQUENCY_UP_THRESHOLD (95)
+#define MICRO_FREQUENCY_UP_THRESHOLD (45)
#define MICRO_FREQUENCY_MIN_SAMPLE_RATE (10000)
#define MIN_FREQUENCY_UP_THRESHOLD (1)
#define MAX_FREQUENCY_UP_THRESHOLD (100)

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linux-tkg/linux-tkg-patches/5.9/0005-glitched-pds.patch
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From f7f49141a5dbe9c99d78196b58c44307fb2e6be3 Mon Sep 17 00:00:00 2001
From: Tk-Glitch <ti3nou@gmail.com>
Date: Wed, 4 Jul 2018 04:30:08 +0200
Subject: glitched - PDS
diff --git a/kernel/Kconfig.hz b/kernel/Kconfig.hz
index 2a202a846757..1d9c7ed79b11 100644
--- a/kernel/Kconfig.hz
+++ b/kernel/Kconfig.hz
@@ -4,7 +4,7 @@
choice
prompt "Timer frequency"
- default HZ_250
+ default HZ_500
help
Allows the configuration of the timer frequency. It is customary
to have the timer interrupt run at 1000 Hz but 100 Hz may be more
@@ -39,6 +39,13 @@ choice
on SMP and NUMA systems and exactly dividing by both PAL and
NTSC frame rates for video and multimedia work.
+ config HZ_500
+ bool "500 HZ"
+ help
+ 500 Hz is a balanced timer frequency. Provides fast interactivity
+ on desktops with great smoothness without increasing CPU power
+ consumption and sacrificing the battery life on laptops.
+
config HZ_1000
bool "1000 HZ"
help
@@ -52,6 +59,7 @@ config HZ
default 100 if HZ_100
default 250 if HZ_250
default 300 if HZ_300
+ default 500 if HZ_500
default 1000 if HZ_1000
config SCHED_HRTICK
diff --git a/kernel/Kconfig.hz b/kernel/Kconfig.hz
index 2a202a846757..1d9c7ed79b11 100644
--- a/kernel/Kconfig.hz
+++ b/kernel/Kconfig.hz
@@ -4,7 +4,7 @@
choice
prompt "Timer frequency"
- default HZ_500
+ default HZ_750
help
Allows the configuration of the timer frequency. It is customary
to have the timer interrupt run at 1000 Hz but 100 Hz may be more
@@ -46,6 +46,13 @@ choice
on desktops with great smoothness without increasing CPU power
consumption and sacrificing the battery life on laptops.
+ config HZ_750
+ bool "750 HZ"
+ help
+ 750 Hz is a good timer frequency for desktops. Provides fast
+ interactivity with great smoothness without sacrificing too
+ much throughput.
+
config HZ_1000
bool "1000 HZ"
help
@@ -60,6 +67,7 @@ config HZ
default 250 if HZ_250
default 300 if HZ_300
default 500 if HZ_500
+ default 750 if HZ_750
default 1000 if HZ_1000
config SCHED_HRTICK
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 9270a4370d54..30d01e647417 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -169,7 +169,7 @@
/*
* From 0 .. 200. Higher means more swappy.
*/
-int vm_swappiness = 60;
+int vm_swappiness = 20;
static void set_task_reclaim_state(struct task_struct *task,
struct reclaim_state *rs)

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linux-tkg/linux-tkg-patches/5.9/0006-add-acs-overrides_iommu.patch
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From cdeab384f48dd9c88e2dff2e9ad8d57dca1a1b1c Mon Sep 17 00:00:00 2001
From: Mark Weiman <mark.weiman@markzz.com>
Date: Sun, 12 Aug 2018 11:36:21 -0400
Subject: [PATCH] pci: Enable overrides for missing ACS capabilities
This an updated version of Alex Williamson's patch from:
https://lkml.org/lkml/2013/5/30/513
Original commit message follows:
PCIe ACS (Access Control Services) is the PCIe 2.0+ feature that
allows us to control whether transactions are allowed to be redirected
in various subnodes of a PCIe topology. For instance, if two
endpoints are below a root port or downsteam switch port, the
downstream port may optionally redirect transactions between the
devices, bypassing upstream devices. The same can happen internally
on multifunction devices. The transaction may never be visible to the
upstream devices.
One upstream device that we particularly care about is the IOMMU. If
a redirection occurs in the topology below the IOMMU, then the IOMMU
cannot provide isolation between devices. This is why the PCIe spec
encourages topologies to include ACS support. Without it, we have to
assume peer-to-peer DMA within a hierarchy can bypass IOMMU isolation.
Unfortunately, far too many topologies do not support ACS to make this
a steadfast requirement. Even the latest chipsets from Intel are only
sporadically supporting ACS. We have trouble getting interconnect
vendors to include the PCIe spec required PCIe capability, let alone
suggested features.
Therefore, we need to add some flexibility. The pcie_acs_override=
boot option lets users opt-in specific devices or sets of devices to
assume ACS support. The "downstream" option assumes full ACS support
on root ports and downstream switch ports. The "multifunction"
option assumes the subset of ACS features available on multifunction
endpoints and upstream switch ports are supported. The "id:nnnn:nnnn"
option enables ACS support on devices matching the provided vendor
and device IDs, allowing more strategic ACS overrides. These options
may be combined in any order. A maximum of 16 id specific overrides
are available. It's suggested to use the most limited set of options
necessary to avoid completely disabling ACS across the topology.
Note to hardware vendors, we have facilities to permanently quirk
specific devices which enforce isolation but not provide an ACS
capability. Please contact me to have your devices added and save
your customers the hassle of this boot option.
Signed-off-by: Mark Weiman <mark.weiman@markzz.com>
---
.../admin-guide/kernel-parameters.txt | 9 ++
drivers/pci/quirks.c | 101 ++++++++++++++++++
2 files changed, 110 insertions(+)
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index aefd358a5ca3..173b3596fd9e 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -3190,6 +3190,15 @@
nomsi [MSI] If the PCI_MSI kernel config parameter is
enabled, this kernel boot option can be used to
disable the use of MSI interrupts system-wide.
+ pcie_acs_override =
+ [PCIE] Override missing PCIe ACS support for:
+ downstream
+ All downstream ports - full ACS capabilities
+ multifunction
+ All multifunction devices - multifunction ACS subset
+ id:nnnn:nnnn
+ Specific device - full ACS capabilities
+ Specified as vid:did (vendor/device ID) in hex
noioapicquirk [APIC] Disable all boot interrupt quirks.
Safety option to keep boot IRQs enabled. This
should never be necessary.
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 4700d24e5d55..8f7a3d7fd9c1 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -3372,6 +3372,106 @@ static void quirk_no_bus_reset(struct pci_dev *dev)
dev->dev_flags |= PCI_DEV_FLAGS_NO_BUS_RESET;
}
+static bool acs_on_downstream;
+static bool acs_on_multifunction;
+
+#define NUM_ACS_IDS 16
+struct acs_on_id {
+ unsigned short vendor;
+ unsigned short device;
+};
+static struct acs_on_id acs_on_ids[NUM_ACS_IDS];
+static u8 max_acs_id;
+
+static __init int pcie_acs_override_setup(char *p)
+{
+ if (!p)
+ return -EINVAL;
+
+ while (*p) {
+ if (!strncmp(p, "downstream", 10))
+ acs_on_downstream = true;
+ if (!strncmp(p, "multifunction", 13))
+ acs_on_multifunction = true;
+ if (!strncmp(p, "id:", 3)) {
+ char opt[5];
+ int ret;
+ long val;
+
+ if (max_acs_id >= NUM_ACS_IDS - 1) {
+ pr_warn("Out of PCIe ACS override slots (%d)\n",
+ NUM_ACS_IDS);
+ goto next;
+ }
+
+ p += 3;
+ snprintf(opt, 5, "%s", p);
+ ret = kstrtol(opt, 16, &val);
+ if (ret) {
+ pr_warn("PCIe ACS ID parse error %d\n", ret);
+ goto next;
+ }
+ acs_on_ids[max_acs_id].vendor = val;
+
+ p += strcspn(p, ":");
+ if (*p != ':') {
+ pr_warn("PCIe ACS invalid ID\n");
+ goto next;
+ }
+
+ p++;
+ snprintf(opt, 5, "%s", p);
+ ret = kstrtol(opt, 16, &val);
+ if (ret) {
+ pr_warn("PCIe ACS ID parse error %d\n", ret);
+ goto next;
+ }
+ acs_on_ids[max_acs_id].device = val;
+ max_acs_id++;
+ }
+next:
+ p += strcspn(p, ",");
+ if (*p == ',')
+ p++;
+ }
+
+ if (acs_on_downstream || acs_on_multifunction || max_acs_id)
+ pr_warn("Warning: PCIe ACS overrides enabled; This may allow non-IOMMU protected peer-to-peer DMA\n");
+
+ return 0;
+}
+early_param("pcie_acs_override", pcie_acs_override_setup);
+
+static int pcie_acs_overrides(struct pci_dev *dev, u16 acs_flags)
+{
+ int i;
+
+ /* Never override ACS for legacy devices or devices with ACS caps */
+ if (!pci_is_pcie(dev) ||
+ pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ACS))
+ return -ENOTTY;
+
+ for (i = 0; i < max_acs_id; i++)
+ if (acs_on_ids[i].vendor == dev->vendor &&
+ acs_on_ids[i].device == dev->device)
+ return 1;
+
+ switch (pci_pcie_type(dev)) {
+ case PCI_EXP_TYPE_DOWNSTREAM:
+ case PCI_EXP_TYPE_ROOT_PORT:
+ if (acs_on_downstream)
+ return 1;
+ break;
+ case PCI_EXP_TYPE_ENDPOINT:
+ case PCI_EXP_TYPE_UPSTREAM:
+ case PCI_EXP_TYPE_LEG_END:
+ case PCI_EXP_TYPE_RC_END:
+ if (acs_on_multifunction && dev->multifunction)
+ return 1;
+ }
+
+ return -ENOTTY;
+}
/*
* Some Atheros AR9xxx and QCA988x chips do not behave after a bus reset.
* The device will throw a Link Down error on AER-capable systems and
@@ -4513,6 +4613,7 @@ static const struct pci_dev_acs_enabled {
{ PCI_VENDOR_ID_ZHAOXIN, 0x9083, pci_quirk_mf_endpoint_acs },
/* Zhaoxin Root/Downstream Ports */
{ PCI_VENDOR_ID_ZHAOXIN, PCI_ANY_ID, pci_quirk_zhaoxin_pcie_ports_acs },
+ { PCI_ANY_ID, PCI_ANY_ID, pcie_acs_overrides },
{ 0 }
};

597
linux-tkg/linux-tkg-patches/5.9/0007-v5.9-fsync.patch
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From 7b5df0248ce255ef5b7204d65a7b3783ebb76a3d Mon Sep 17 00:00:00 2001
From: Gabriel Krisman Bertazi <krisman@collabora.com>
Date: Fri, 13 Dec 2019 11:08:02 -0300
Subject: [PATCH 1/2] futex: Implement mechanism to wait on any of several
futexes
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This is a new futex operation, called FUTEX_WAIT_MULTIPLE, which allows
a thread to wait on several futexes at the same time, and be awoken by
any of them. In a sense, it implements one of the features that was
supported by pooling on the old FUTEX_FD interface.
The use case lies in the Wine implementation of the Windows NT interface
WaitMultipleObjects. This Windows API function allows a thread to sleep
waiting on the first of a set of event sources (mutexes, timers, signal,
console input, etc) to signal. Considering this is a primitive
synchronization operation for Windows applications, being able to quickly
signal events on the producer side, and quickly go to sleep on the
consumer side is essential for good performance of those running over Wine.
Wine developers have an implementation that uses eventfd, but it suffers
from FD exhaustion (there is applications that go to the order of
multi-milion FDs), and higher CPU utilization than this new operation.
The futex list is passed as an array of `struct futex_wait_block`
(pointer, value, bitset) to the kernel, which will enqueue all of them
and sleep if none was already triggered. It returns a hint of which
futex caused the wake up event to userspace, but the hint doesn't
guarantee that is the only futex triggered. Before calling the syscall
again, userspace should traverse the list, trying to re-acquire any of
the other futexes, to prevent an immediate -EWOULDBLOCK return code from
the kernel.
This was tested using three mechanisms:
1) By reimplementing FUTEX_WAIT in terms of FUTEX_WAIT_MULTIPLE and
running the unmodified tools/testing/selftests/futex and a full linux
distro on top of this kernel.
2) By an example code that exercises the FUTEX_WAIT_MULTIPLE path on a
multi-threaded, event-handling setup.
3) By running the Wine fsync implementation and executing multi-threaded
applications, in particular modern games, on top of this implementation.
Changes were tested for the following ABIs: x86_64, i386 and x32.
Support for x32 applications is not implemented since it would
take a major rework adding a new entry point and splitting the current
futex 64 entry point in two and we can't change the current x32 syscall
number without breaking user space compatibility.
CC: Steven Rostedt <rostedt@goodmis.org>
Cc: Richard Yao <ryao@gentoo.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Co-developed-by: Zebediah Figura <z.figura12@gmail.com>
Signed-off-by: Zebediah Figura <z.figura12@gmail.com>
Co-developed-by: Steven Noonan <steven@valvesoftware.com>
Signed-off-by: Steven Noonan <steven@valvesoftware.com>
Co-developed-by: Pierre-Loup A. Griffais <pgriffais@valvesoftware.com>
Signed-off-by: Pierre-Loup A. Griffais <pgriffais@valvesoftware.com>
Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com>
[Added compatibility code]
Co-developed-by: André Almeida <andrealmeid@collabora.com>
Signed-off-by: André Almeida <andrealmeid@collabora.com>
Adjusted for v5.9: Removed `put_futex_key` calls.
---
include/uapi/linux/futex.h | 20 +++
kernel/futex.c | 352 ++++++++++++++++++++++++++++++++++++-
2 files changed, 370 insertions(+), 2 deletions(-)
diff --git a/include/uapi/linux/futex.h b/include/uapi/linux/futex.h
index a89eb0accd5e2..580001e89c6ca 100644
--- a/include/uapi/linux/futex.h
+++ b/include/uapi/linux/futex.h
@@ -21,6 +21,7 @@
#define FUTEX_WAKE_BITSET 10
#define FUTEX_WAIT_REQUEUE_PI 11
#define FUTEX_CMP_REQUEUE_PI 12
+#define FUTEX_WAIT_MULTIPLE 13
#define FUTEX_PRIVATE_FLAG 128
#define FUTEX_CLOCK_REALTIME 256
@@ -40,6 +41,8 @@
FUTEX_PRIVATE_FLAG)
#define FUTEX_CMP_REQUEUE_PI_PRIVATE (FUTEX_CMP_REQUEUE_PI | \
FUTEX_PRIVATE_FLAG)
+#define FUTEX_WAIT_MULTIPLE_PRIVATE (FUTEX_WAIT_MULTIPLE | \
+ FUTEX_PRIVATE_FLAG)
/*
* Support for robust futexes: the kernel cleans up held futexes at
@@ -150,4 +153,21 @@ struct robust_list_head {
(((op & 0xf) << 28) | ((cmp & 0xf) << 24) \
| ((oparg & 0xfff) << 12) | (cmparg & 0xfff))
+/*
+ * Maximum number of multiple futexes to wait for
+ */
+#define FUTEX_MULTIPLE_MAX_COUNT 128
+
+/**
+ * struct futex_wait_block - Block of futexes to be waited for
+ * @uaddr: User address of the futex
+ * @val: Futex value expected by userspace
+ * @bitset: Bitset for the optional bitmasked wakeup
+ */
+struct futex_wait_block {
+ __u32 __user *uaddr;
+ __u32 val;
+ __u32 bitset;
+};
+
#endif /* _UAPI_LINUX_FUTEX_H */
diff --git a/kernel/futex.c b/kernel/futex.c
index a5876694a60eb..6f4bea76df460 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -197,6 +197,8 @@ struct futex_pi_state {
* @rt_waiter: rt_waiter storage for use with requeue_pi
* @requeue_pi_key: the requeue_pi target futex key
* @bitset: bitset for the optional bitmasked wakeup
+ * @uaddr: userspace address of futex
+ * @uval: expected futex's value
*
* We use this hashed waitqueue, instead of a normal wait_queue_entry_t, so
* we can wake only the relevant ones (hashed queues may be shared).
@@ -219,6 +221,8 @@ struct futex_q {
struct rt_mutex_waiter *rt_waiter;
union futex_key *requeue_pi_key;
u32 bitset;
+ u32 __user *uaddr;
+ u32 uval;
} __randomize_layout;
static const struct futex_q futex_q_init = {
@@ -2304,6 +2308,29 @@ static int unqueue_me(struct futex_q *q)
return ret;
}
+/**
+ * unqueue_multiple() - Remove several futexes from their futex_hash_bucket
+ * @q: The list of futexes to unqueue
+ * @count: Number of futexes in the list
+ *
+ * Helper to unqueue a list of futexes. This can't fail.
+ *
+ * Return:
+ * - >=0 - Index of the last futex that was awoken;
+ * - -1 - If no futex was awoken
+ */
+static int unqueue_multiple(struct futex_q *q, int count)
+{
+ int ret = -1;
+ int i;
+
+ for (i = 0; i < count; i++) {
+ if (!unqueue_me(&q[i]))
+ ret = i;
+ }
+ return ret;
+}
+
/*
* PI futexes can not be requeued and must remove themself from the
* hash bucket. The hash bucket lock (i.e. lock_ptr) is held on entry
@@ -2662,6 +2689,205 @@ static int futex_wait_setup(u32 __user *uaddr, u32 val, unsigned int flags,
return ret;
}
+/**
+ * futex_wait_multiple_setup() - Prepare to wait and enqueue multiple futexes
+ * @qs: The corresponding futex list
+ * @count: The size of the lists
+ * @flags: Futex flags (FLAGS_SHARED, etc.)
+ * @awaken: Index of the last awoken futex
+ *
+ * Prepare multiple futexes in a single step and enqueue them. This may fail if
+ * the futex list is invalid or if any futex was already awoken. On success the
+ * task is ready to interruptible sleep.
+ *
+ * Return:
+ * - 1 - One of the futexes was awaken by another thread
+ * - 0 - Success
+ * - <0 - -EFAULT, -EWOULDBLOCK or -EINVAL
+ */
+static int futex_wait_multiple_setup(struct futex_q *qs, int count,
+ unsigned int flags, int *awaken)
+{
+ struct futex_hash_bucket *hb;
+ int ret, i;
+ u32 uval;
+
+ /*
+ * Enqueuing multiple futexes is tricky, because we need to
+ * enqueue each futex in the list before dealing with the next
+ * one to avoid deadlocking on the hash bucket. But, before
+ * enqueuing, we need to make sure that current->state is
+ * TASK_INTERRUPTIBLE, so we don't absorb any awake events, which
+ * cannot be done before the get_futex_key of the next key,
+ * because it calls get_user_pages, which can sleep. Thus, we
+ * fetch the list of futexes keys in two steps, by first pinning
+ * all the memory keys in the futex key, and only then we read
+ * each key and queue the corresponding futex.
+ */
+retry:
+ for (i = 0; i < count; i++) {
+ qs[i].key = FUTEX_KEY_INIT;
+ ret = get_futex_key(qs[i].uaddr, flags & FLAGS_SHARED,
+ &qs[i].key, FUTEX_READ);
+ if (unlikely(ret)) {
+ return ret;
+ }
+ }
+
+ set_current_state(TASK_INTERRUPTIBLE);
+
+ for (i = 0; i < count; i++) {
+ struct futex_q *q = &qs[i];
+
+ hb = queue_lock(q);
+
+ ret = get_futex_value_locked(&uval, q->uaddr);
+ if (ret) {
+ /*
+ * We need to try to handle the fault, which
+ * cannot be done without sleep, so we need to
+ * undo all the work already done, to make sure
+ * we don't miss any wake ups. Therefore, clean
+ * up, handle the fault and retry from the
+ * beginning.
+ */
+ queue_unlock(hb);
+
+ /*
+ * Keys 0..(i-1) are implicitly put
+ * on unqueue_multiple.
+ */
+ *awaken = unqueue_multiple(qs, i);
+
+ __set_current_state(TASK_RUNNING);
+
+ /*
+ * On a real fault, prioritize the error even if
+ * some other futex was awoken. Userspace gave
+ * us a bad address, -EFAULT them.
+ */
+ ret = get_user(uval, q->uaddr);
+ if (ret)
+ return ret;
+
+ /*
+ * Even if the page fault was handled, If
+ * something was already awaken, we can safely
+ * give up and succeed to give a hint for userspace to
+ * acquire the right futex faster.
+ */
+ if (*awaken >= 0)
+ return 1;
+
+ goto retry;
+ }
+
+ if (uval != q->uval) {
+ queue_unlock(hb);
+
+ /*
+ * If something was already awaken, we can
+ * safely ignore the error and succeed.
+ */
+ *awaken = unqueue_multiple(qs, i);
+ __set_current_state(TASK_RUNNING);
+ if (*awaken >= 0)
+ return 1;
+
+ return -EWOULDBLOCK;
+ }
+
+ /*
+ * The bucket lock can't be held while dealing with the
+ * next futex. Queue each futex at this moment so hb can
+ * be unlocked.
+ */
+ queue_me(&qs[i], hb);
+ }
+ return 0;
+}
+
+/**
+ * futex_wait_multiple() - Prepare to wait on and enqueue several futexes
+ * @qs: The list of futexes to wait on
+ * @op: Operation code from futex's syscall
+ * @count: The number of objects
+ * @abs_time: Timeout before giving up and returning to userspace
+ *
+ * Entry point for the FUTEX_WAIT_MULTIPLE futex operation, this function
+ * sleeps on a group of futexes and returns on the first futex that
+ * triggered, or after the timeout has elapsed.
+ *
+ * Return:
+ * - >=0 - Hint to the futex that was awoken
+ * - <0 - On error
+ */
+static int futex_wait_multiple(struct futex_q *qs, int op,
+ u32 count, ktime_t *abs_time)
+{
+ struct hrtimer_sleeper timeout, *to;
+ int ret, flags = 0, hint = 0;
+ unsigned int i;
+
+ if (!(op & FUTEX_PRIVATE_FLAG))
+ flags |= FLAGS_SHARED;
+
+ if (op & FUTEX_CLOCK_REALTIME)
+ flags |= FLAGS_CLOCKRT;
+
+ to = futex_setup_timer(abs_time, &timeout, flags, 0);
+ while (1) {
+ ret = futex_wait_multiple_setup(qs, count, flags, &hint);
+ if (ret) {
+ if (ret > 0) {
+ /* A futex was awaken during setup */
+ ret = hint;
+ }
+ break;
+ }
+
+ if (to)
+ hrtimer_start_expires(&to->timer, HRTIMER_MODE_ABS);
+
+ /*
+ * Avoid sleeping if another thread already tried to
+ * wake us.
+ */
+ for (i = 0; i < count; i++) {
+ if (plist_node_empty(&qs[i].list))
+ break;
+ }
+
+ if (i == count && (!to || to->task))
+ freezable_schedule();
+
+ ret = unqueue_multiple(qs, count);
+
+ __set_current_state(TASK_RUNNING);
+
+ if (ret >= 0)
+ break;
+ if (to && !to->task) {
+ ret = -ETIMEDOUT;
+ break;
+ } else if (signal_pending(current)) {
+ ret = -ERESTARTSYS;
+ break;
+ }
+ /*
+ * The final case is a spurious wakeup, for
+ * which just retry.
+ */
+ }
+
+ if (to) {
+ hrtimer_cancel(&to->timer);
+ destroy_hrtimer_on_stack(&to->timer);
+ }
+
+ return ret;
+}
+
static int futex_wait(u32 __user *uaddr, unsigned int flags, u32 val,
ktime_t *abs_time, u32 bitset)
{
@@ -3774,6 +4000,43 @@ long do_futex(u32 __user *uaddr, int op, u32 val, ktime_t *timeout,
return -ENOSYS;
}
+/**
+ * futex_read_wait_block - Read an array of futex_wait_block from userspace
+ * @uaddr: Userspace address of the block
+ * @count: Number of blocks to be read
+ *
+ * This function creates and allocate an array of futex_q (we zero it to
+ * initialize the fields) and then, for each futex_wait_block element from
+ * userspace, fill a futex_q element with proper values.
+ */
+inline struct futex_q *futex_read_wait_block(u32 __user *uaddr, u32 count)
+{
+ unsigned int i;
+ struct futex_q *qs;
+ struct futex_wait_block fwb;
+ struct futex_wait_block __user *entry =
+ (struct futex_wait_block __user *)uaddr;
+
+ if (!count || count > FUTEX_MULTIPLE_MAX_COUNT)
+ return ERR_PTR(-EINVAL);
+
+ qs = kcalloc(count, sizeof(*qs), GFP_KERNEL);
+ if (!qs)
+ return ERR_PTR(-ENOMEM);
+
+ for (i = 0; i < count; i++) {
+ if (copy_from_user(&fwb, &entry[i], sizeof(fwb))) {
+ kfree(qs);
+ return ERR_PTR(-EFAULT);
+ }
+
+ qs[i].uaddr = fwb.uaddr;
+ qs[i].uval = fwb.val;
+ qs[i].bitset = fwb.bitset;
+ }
+
+ return qs;
+}
SYSCALL_DEFINE6(futex, u32 __user *, uaddr, int, op, u32, val,
struct __kernel_timespec __user *, utime, u32 __user *, uaddr2,
@@ -3786,7 +4049,8 @@ SYSCALL_DEFINE6(futex, u32 __user *, uaddr, int, op, u32, val,
if (utime && (cmd == FUTEX_WAIT || cmd == FUTEX_LOCK_PI ||
cmd == FUTEX_WAIT_BITSET ||
- cmd == FUTEX_WAIT_REQUEUE_PI)) {
+ cmd == FUTEX_WAIT_REQUEUE_PI ||
+ cmd == FUTEX_WAIT_MULTIPLE)) {
if (unlikely(should_fail_futex(!(op & FUTEX_PRIVATE_FLAG))))
return -EFAULT;
if (get_timespec64(&ts, utime))
@@ -3807,6 +4071,25 @@ SYSCALL_DEFINE6(futex, u32 __user *, uaddr, int, op, u32, val,
cmd == FUTEX_CMP_REQUEUE_PI || cmd == FUTEX_WAKE_OP)
val2 = (u32) (unsigned long) utime;
+ if (cmd == FUTEX_WAIT_MULTIPLE) {
+ int ret;
+ struct futex_q *qs;
+
+#ifdef CONFIG_X86_X32
+ if (unlikely(in_x32_syscall()))
+ return -ENOSYS;
+#endif
+ qs = futex_read_wait_block(uaddr, val);
+
+ if (IS_ERR(qs))
+ return PTR_ERR(qs);
+
+ ret = futex_wait_multiple(qs, op, val, tp);
+ kfree(qs);
+
+ return ret;
+ }
+
return do_futex(uaddr, op, val, tp, uaddr2, val2, val3);
}
@@ -3969,6 +4252,57 @@ COMPAT_SYSCALL_DEFINE3(get_robust_list, int, pid,
#endif /* CONFIG_COMPAT */
#ifdef CONFIG_COMPAT_32BIT_TIME
+/**
+ * struct compat_futex_wait_block - Block of futexes to be waited for
+ * @uaddr: User address of the futex (compatible pointer)
+ * @val: Futex value expected by userspace
+ * @bitset: Bitset for the optional bitmasked wakeup
+ */
+struct compat_futex_wait_block {
+ compat_uptr_t uaddr;
+ __u32 val;
+ __u32 bitset;
+};
+
+/**
+ * compat_futex_read_wait_block - Read an array of futex_wait_block from
+ * userspace
+ * @uaddr: Userspace address of the block
+ * @count: Number of blocks to be read
+ *
+ * This function does the same as futex_read_wait_block(), except that it
+ * converts the pointer to the futex from the compat version to the regular one.
+ */
+inline struct futex_q *compat_futex_read_wait_block(u32 __user *uaddr,
+ u32 count)
+{
+ unsigned int i;
+ struct futex_q *qs;
+ struct compat_futex_wait_block fwb;
+ struct compat_futex_wait_block __user *entry =
+ (struct compat_futex_wait_block __user *)uaddr;
+
+ if (!count || count > FUTEX_MULTIPLE_MAX_COUNT)
+ return ERR_PTR(-EINVAL);
+
+ qs = kcalloc(count, sizeof(*qs), GFP_KERNEL);
+ if (!qs)
+ return ERR_PTR(-ENOMEM);
+
+ for (i = 0; i < count; i++) {
+ if (copy_from_user(&fwb, &entry[i], sizeof(fwb))) {
+ kfree(qs);
+ return ERR_PTR(-EFAULT);
+ }
+
+ qs[i].uaddr = compat_ptr(fwb.uaddr);
+ qs[i].uval = fwb.val;
+ qs[i].bitset = fwb.bitset;
+ }
+
+ return qs;
+}
+
SYSCALL_DEFINE6(futex_time32, u32 __user *, uaddr, int, op, u32, val,
struct old_timespec32 __user *, utime, u32 __user *, uaddr2,
u32, val3)
@@ -3980,7 +4314,8 @@ SYSCALL_DEFINE6(futex_time32, u32 __user *, uaddr, int, op, u32, val,
if (utime && (cmd == FUTEX_WAIT || cmd == FUTEX_LOCK_PI ||
cmd == FUTEX_WAIT_BITSET ||
- cmd == FUTEX_WAIT_REQUEUE_PI)) {
+ cmd == FUTEX_WAIT_REQUEUE_PI ||
+ cmd == FUTEX_WAIT_MULTIPLE)) {
if (get_old_timespec32(&ts, utime))
return -EFAULT;
if (!timespec64_valid(&ts))
@@ -3995,6 +4330,19 @@ SYSCALL_DEFINE6(futex_time32, u32 __user *, uaddr, int, op, u32, val,
cmd == FUTEX_CMP_REQUEUE_PI || cmd == FUTEX_WAKE_OP)
val2 = (int) (unsigned long) utime;
+ if (cmd == FUTEX_WAIT_MULTIPLE) {
+ int ret;
+ struct futex_q *qs = compat_futex_read_wait_block(uaddr, val);
+
+ if (IS_ERR(qs))
+ return PTR_ERR(qs);
+
+ ret = futex_wait_multiple(qs, op, val, tp);
+ kfree(qs);
+
+ return ret;
+ }
+
return do_futex(uaddr, op, val, tp, uaddr2, val2, val3);
}
#endif /* CONFIG_COMPAT_32BIT_TIME */
From ccdddb50d330d2ee1a4d2cbfdd27bdd7fb10eec3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A9=20Almeida?= <andrealmeid@collabora.com>
Date: Fri, 7 Feb 2020 23:28:02 -0300
Subject: [PATCH 2/2] futex: Add Proton compatibility code
---
include/uapi/linux/futex.h | 2 +-
kernel/futex.c | 5 +++--
2 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/include/uapi/linux/futex.h b/include/uapi/linux/futex.h
index 580001e89c6ca..a3e760886b8e7 100644
--- a/include/uapi/linux/futex.h
+++ b/include/uapi/linux/futex.h
@@ -21,7 +21,7 @@
#define FUTEX_WAKE_BITSET 10
#define FUTEX_WAIT_REQUEUE_PI 11
#define FUTEX_CMP_REQUEUE_PI 12
-#define FUTEX_WAIT_MULTIPLE 13
+#define FUTEX_WAIT_MULTIPLE 31
#define FUTEX_PRIVATE_FLAG 128
#define FUTEX_CLOCK_REALTIME 256
diff --git a/kernel/futex.c b/kernel/futex.c
index 6f4bea76df460..03d89fe7b8392 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -4059,7 +4059,7 @@ SYSCALL_DEFINE6(futex, u32 __user *, uaddr, int, op, u32, val,
return -EINVAL;
t = timespec64_to_ktime(ts);
- if (cmd == FUTEX_WAIT)
+ if (cmd == FUTEX_WAIT || cmd == FUTEX_WAIT_MULTIPLE)
t = ktime_add_safe(ktime_get(), t);
tp = &t;
}
@@ -4260,6 +4260,7 @@ COMPAT_SYSCALL_DEFINE3(get_robust_list, int, pid,
*/
struct compat_futex_wait_block {
compat_uptr_t uaddr;
+ __u32 pad;
__u32 val;
__u32 bitset;
};
@@ -4322,7 +4323,7 @@ SYSCALL_DEFINE6(futex_time32, u32 __user *, uaddr, int, op, u32, val,
return -EINVAL;
t = timespec64_to_ktime(ts);
- if (cmd == FUTEX_WAIT)
+ if (cmd == FUTEX_WAIT || cmd == FUTEX_WAIT_MULTIPLE)
t = ktime_add_safe(ktime_get(), t);
tp = &t;
}

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linux-tkg/linux-tkg-patches/5.9/0008-5.9-bcachefs.patch
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linux-tkg/linux-tkg-patches/5.9/0009-glitched-bmq.patch
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@ -0,0 +1,90 @@
From f7f49141a5dbe9c99d78196b58c44307fb2e6be3 Mon Sep 17 00:00:00 2001
From: Tk-Glitch <ti3nou@gmail.com>
Date: Wed, 4 Jul 2018 04:30:08 +0200
Subject: glitched - BMQ
diff --git a/kernel/Kconfig.hz b/kernel/Kconfig.hz
index 2a202a846757..1d9c7ed79b11 100644
--- a/kernel/Kconfig.hz
+++ b/kernel/Kconfig.hz
@@ -4,7 +4,7 @@
choice
prompt "Timer frequency"
- default HZ_250
+ default HZ_500
help
Allows the configuration of the timer frequency. It is customary
to have the timer interrupt run at 1000 Hz but 100 Hz may be more
@@ -39,6 +39,13 @@ choice
on SMP and NUMA systems and exactly dividing by both PAL and
NTSC frame rates for video and multimedia work.
+ config HZ_500
+ bool "500 HZ"
+ help
+ 500 Hz is a balanced timer frequency. Provides fast interactivity
+ on desktops with great smoothness without increasing CPU power
+ consumption and sacrificing the battery life on laptops.
+
config HZ_1000
bool "1000 HZ"
help
@@ -52,6 +59,7 @@ config HZ
default 100 if HZ_100
default 250 if HZ_250
default 300 if HZ_300
+ default 500 if HZ_500
default 1000 if HZ_1000
config SCHED_HRTICK
diff --git a/kernel/Kconfig.hz b/kernel/Kconfig.hz
index 2a202a846757..1d9c7ed79b11 100644
--- a/kernel/Kconfig.hz
+++ b/kernel/Kconfig.hz
@@ -4,7 +4,7 @@
choice
prompt "Timer frequency"
- default HZ_500
+ default HZ_750
help
Allows the configuration of the timer frequency. It is customary
to have the timer interrupt run at 1000 Hz but 100 Hz may be more
@@ -46,6 +46,13 @@ choice
on desktops with great smoothness without increasing CPU power
consumption and sacrificing the battery life on laptops.
+ config HZ_750
+ bool "750 HZ"
+ help
+ 750 Hz is a good timer frequency for desktops. Provides fast
+ interactivity with great smoothness without sacrificing too
+ much throughput.
+
config HZ_1000
bool "1000 HZ"
help
@@ -60,6 +67,7 @@ config HZ
default 250 if HZ_250
default 300 if HZ_300
default 500 if HZ_500
+ default 750 if HZ_750
default 1000 if HZ_1000
config SCHED_HRTICK
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 9270a4370d54..30d01e647417 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -169,7 +169,7 @@
/*
* From 0 .. 200. Higher means more swappy.
*/
-int vm_swappiness = 60;
+int vm_swappiness = 20;
static void set_task_reclaim_state(struct task_struct *task,
struct reclaim_state *rs)

18
linux-tkg/linux-tkg-patches/5.9/0009-glitched-ondemand-bmq.patch
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@ -0,0 +1,18 @@
diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index 6b423eebfd5d..61e3271675d6 100644
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -21,10 +21,10 @@
#include "cpufreq_ondemand.h"
/* On-demand governor macros */
-#define DEF_FREQUENCY_UP_THRESHOLD (80)
-#define DEF_SAMPLING_DOWN_FACTOR (1)
+#define DEF_FREQUENCY_UP_THRESHOLD (55)
+#define DEF_SAMPLING_DOWN_FACTOR (5)
#define MAX_SAMPLING_DOWN_FACTOR (100000)
-#define MICRO_FREQUENCY_UP_THRESHOLD (95)
+#define MICRO_FREQUENCY_UP_THRESHOLD (63)
#define MICRO_FREQUENCY_MIN_SAMPLE_RATE (10000)
#define MIN_FREQUENCY_UP_THRESHOLD (1)
#define MAX_FREQUENCY_UP_THRESHOLD (100)

8809
linux-tkg/linux-tkg-patches/5.9/0009-prjc_v5.9-r0.patch
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43
linux-tkg/linux-tkg-patches/5.9/0011-ZFS-fix.patch
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@ -0,0 +1,43 @@
From 1e010beda2896bdf3082fb37a3e49f8ce20e04d8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Thalheim?= <joerg@thalheim.io>
Date: Thu, 2 May 2019 05:28:08 +0100
Subject: [PATCH] x86/fpu: Export kernel_fpu_{begin,end}() with
EXPORT_SYMBOL_GPL
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
We need these symbols in zfs as the fpu implementation breaks userspace:
https://github.com/zfsonlinux/zfs/issues/9346
Signed-off-by: Jörg Thalheim <joerg@thalheim.io>
---
arch/x86/kernel/fpu/core.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c
index 12c70840980e..352538b3bb5d 100644
--- a/arch/x86/kernel/fpu/core.c
+++ b/arch/x86/kernel/fpu/core.c
@@ -102,7 +102,7 @@ void kernel_fpu_begin(void)
}
__cpu_invalidate_fpregs_state();
}
-EXPORT_SYMBOL_GPL(kernel_fpu_begin);
+EXPORT_SYMBOL(kernel_fpu_begin);
void kernel_fpu_end(void)
{
@@ -111,7 +111,7 @@ void kernel_fpu_end(void)
this_cpu_write(in_kernel_fpu, false);
preempt_enable();
}
-EXPORT_SYMBOL_GPL(kernel_fpu_end);
+EXPORT_SYMBOL(kernel_fpu_end);
/*
* Save the FPU state (mark it for reload if necessary):
--
2.23.0

54
linux-tkg/linux-tkg-patches/5.9/0012-misc-additions.patch
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@ -0,0 +1,54 @@
diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig
index 0840d27381ea..73aba9a31064 100644
--- a/drivers/tty/Kconfig
+++ b/drivers/tty/Kconfig
@@ -75,6 +75,19 @@ config VT_CONSOLE_SLEEP
def_bool y
depends on VT_CONSOLE && PM_SLEEP
+config NR_TTY_DEVICES
+ int "Maximum tty device number"
+ depends on VT
+ range 12 63
+ default 63
+ help
+ This option is used to change the number of tty devices in /dev.
+ The default value is 63. The lowest number you can set is 12,
+ 63 is also the upper limit so we don't overrun the serial
+ consoles.
+
+ If unsure, say 63.
+
config HW_CONSOLE
bool
depends on VT && !UML
diff --git a/include/uapi/linux/vt.h b/include/uapi/linux/vt.h
index e9d39c48520a..3bceead8da40 100644
--- a/include/uapi/linux/vt.h
+++ b/include/uapi/linux/vt.h
@@ -3,12 +3,25 @@
#define _UAPI_LINUX_VT_H
+/*
+ * We will make this definition solely for the purpose of making packages
+ * such as splashutils build, because they can not understand that
+ * NR_TTY_DEVICES is defined in the kernel configuration.
+ */
+#ifndef CONFIG_NR_TTY_DEVICES
+#define CONFIG_NR_TTY_DEVICES 63
+#endif
+
/*
* These constants are also useful for user-level apps (e.g., VC
* resizing).
*/
#define MIN_NR_CONSOLES 1 /* must be at least 1 */
-#define MAX_NR_CONSOLES 63 /* serial lines start at 64 */
+/*
+ * NR_TTY_DEVICES:
+ * Value MUST be at least 12 and must never be higher then 63
+ */
+#define MAX_NR_CONSOLES CONFIG_NR_TTY_DEVICES /* serial lines start above this */
/* Note: the ioctl VT_GETSTATE does not work for
consoles 16 and higher (since it returns a short) */

25
linux-tkg/linux-tkg-patches/5.9/0013-remove-debian-deps-cross.patch
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@ -0,0 +1,25 @@
From 6368e2994fb1d82dd159f6b5ef021adaf92912a4 Mon Sep 17 00:00:00 2001
From: Hyper-KVM <hyperkvmx86@gmail.com>
Date: Mon, 12 Oct 2020 21:05:18 -0400
Subject: [PATCH] scripts/mkdebian: remove build depends
---
scripts/package/mkdebian | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/scripts/package/mkdebian b/scripts/package/mkdebian
index 48fbd3d0284a..c0f93dd33d74 100755
--- a/scripts/package/mkdebian
+++ b/scripts/package/mkdebian
@@ -174,7 +174,7 @@ Source: $sourcename
Section: kernel
Priority: optional
Maintainer: $maintainer
-Build-Depends: bc, rsync, kmod, cpio, bison, flex | flex:native $extra_build_depends
+Build-Depends:
Homepage: https://www.kernel.org/
Package: $packagename
--
2.28.0