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# Maintainer: Kyle De'Vir (QuartzDragon) <kyle[dot]devir[at]mykolab[dot]com>
# Contributor: Jan Alexander Steffens (heftig) <jan.steffens@gmail.com>
### BUILD OPTIONS
# Set these variables to ANYTHING that is not null to enable them
# CPU sched_yield_type - Choose what sort of yield sched_yield will perform
# 0: No yield
# 1: Yield only to better priority/deadline tasks
# 2: Expire timeslice and recalculate deadline
_sched_yield_type=
# Tweak kernel options prior to a build via nconfig
_makenconfig=
# Optionally select a sub architecture by number if building in a clean chroot
# Leaving this entry blank will require user interaction during the build
# which will cause a failure to build if using makechrootpkg. Note that the
# generic (default) option is 30.
#
# Note - the march=native option is unavailable by this method, use the nconfig
# and manually select it.
#
# 1. AMD Opteron/Athlon64/Hammer/K8 (MK8)
# 2. AMD Opteron/Athlon64/Hammer/K8 with SSE3 (MK8SSE3)
# 3. AMD 61xx/7x50/PhenomX3/X4/II/K10 (MK10)
# 4. AMD Barcelona (MBARCELONA)
# 5. AMD Bobcat (MBOBCAT)
# 6. AMD Jaguar (MJAGUAR)
# 7. AMD Bulldozer (MBULLDOZER)
# 8. AMD Piledriver (MPILEDRIVER)
# 9. AMD Steamroller (MSTEAMROLLER)
# 10. AMD Excavator (MEXCAVATOR)
# 11. AMD Zen (MZEN)
# 12. AMD Zen 2 (MZEN2)
# 13. Intel P4 / older Netburst based Xeon (MPSC)
# 14. Intel Atom (MATOM)
# 15. Intel Core 2 (MCORE2)
# 16. Intel Nehalem (MNEHALEM)
# 17. Intel Westmere (MWESTMERE)
# 18. Intel Silvermont (MSILVERMONT)
# 19. Intel Goldmont (MGOLDMONT)
# 20. Intel Goldmont Plus (MGOLDMONTPLUS)
# 21. Intel Sandy Bridge (MSANDYBRIDGE)
# 22. Intel Ivy Bridge (MIVYBRIDGE)
# 23. Intel Haswell (MHASWELL)
# 24. Intel Broadwell (MBROADWELL)
# 25. Intel Skylake (MSKYLAKE)
# 26. Intel Skylake X (MSKYLAKEX)
# 27. Intel Cannon Lake (MCANNONLAKE)
# 28. Intel Ice Lake (MICELAKE)
# 29. Intel Cascade Lake (MCASCADELAKE)
# 30. Generic-x86-64 (GENERIC_CPU)
# 31. Native optimizations autodetected by GCC (MNATIVE)
_subarch=
# Compile ONLY used modules to VASTLY reduce the number of modules built
# and the build time.
#
# To keep track of which modules are needed for your specific system/hardware,
# give module_db script a try: https://aur.archlinux.org/packages/modprobed-db
# This PKGBUILD read the database kept if it exists
#
# More at this wiki page ---> https://wiki.archlinux.org/index.php/Modprobed-db
_localmodcfg=
pkgbase=linux-pds
pkgver=5.4.1.arch1
pkgrel=1
pkgdesc="Linux"
_srcver_tag=v${pkgver%.*}-${pkgver##*.}
url="https://git.archlinux.org/linux.git/log/?h=$_srcver_tag"
arch=(x86_64)
license=(GPL2)
makedepends=(
bc
kmod
libelf
xmlto
python-sphinx
python-sphinx_rtd_theme
graphviz
imagemagick
git
)
options=('!strip')
_reponame="linux"
_repo_url="https://git.archlinux.org/$_reponame"
_reponame_gcc_patch="kernel_gcc_patch"
_repo_url_gcc_patch="https://github.com/graysky2/$_reponame_gcc_patch"
_gcc_patch_name="enable_additional_cpu_optimizations_for_gcc_v9.1+_kernel_v4.13+.patch"
_pkgdesc_extra="~ featuring Alfred Chen's PDS CPU scheduler, rebased by TkG"
source=(
"git+$_repo_url?signed#tag=$_srcver_tag"
"git+$_repo_url_gcc_patch"
config # the main kernel config file
0005-glitched-pds.patch
0005-v5.4_undead-pds099o.patch
)
validpgpkeys=(
"ABAF11C65A2970B130ABE3C479BE3E4300411886" # Linus Torvalds
"647F28654894E3BD457199BE38DBBDC86092693E" # Greg Kroah-Hartman
"8218F88849AAC522E94CF470A5E9288C4FA415FA" # Jan Alexander Steffens (heftig)
)
sha512sums=('SKIP'
'SKIP'
'5a2a28a3cbcb0424060798b64b59a388f9a0831d882e260e5c28739e74f1a6df1906e9bb82f85cae2fae1dd62c86468111383097824aae4868c7c968a453248a'
'a5ff06602840327e10d623c195b7e1676f967e5aa04de04e9435766fab2b596a44da21f808bfdd632dcf64800456337b7b4c03de2a268980238a310b3644ceae'
'd44f20eabaadf8160adfcb67bc84bdf195d6475f0f6daebd0140749eb57cf7aa0619360bc37668c8df940f18ca5489730638d3e2db749a4c6e349819a64ed377')
export KBUILD_BUILD_HOST=archlinux
export KBUILD_BUILD_USER=$pkgbase
export KBUILD_BUILD_TIMESTAMP="$(date -Ru${SOURCE_DATE_EPOCH:+d @$SOURCE_DATE_EPOCH})"
prepare() {
cd $_reponame
msg2 "Setting version..."
scripts/setlocalversion --save-scmversion
echo "-$pkgrel" > localversion.10-pkgrel
echo "${pkgbase#linux}" > localversion.20-pkgname
# https://github.com/graysky2/kernel_gcc_patch
msg2 "Patching with Graysky's additional gcc CPU optimizatons..."
patch -Np1 -i "$srcdir/$_reponame_gcc_patch/$_gcc_patch_name"
# From https://github.com/Tk-Glitch/PKGBUILDS/tree/master/linux53-tkg/linux53-tkg-patches
msg2 "Patching with Undead PDS 0.99o patches, rebased to 5.3 by TkG"
for MyPatch in 0005-v5.4_undead-pds099o.patch 0005-glitched-pds.patch
do
patch -Np1 -i "$srcdir/$MyPatch"
done
msg2 "Setting config..."
cp ../config .config
if [ -n "$_subarch" ]; then
yes "$_subarch" | make oldconfig
else
make prepare
fi
### Optionally load needed modules for the make localmodconfig
# See https://aur.archlinux.org/packages/modprobed-db
if [ -n "$_localmodcfg" ]; then
if [ -f $HOME/.config/modprobed.db ]; then
msg2 "Running Steven Rostedt's make localmodconfig now"
make LSMOD=$HOME/.config/modprobed.db localmodconfig
else
msg2 "No modprobed.db data found"
exit
fi
fi
if [ -z "$_sched_yield_type" ]; then
plain ""
plain "CPU sched_yield_type - Choose what sort of yield sched_yield will perform."
plain ""
plain "For PDS:"
plain "0: No yield."
plain "1: Yield only to better priority/deadline tasks."
plain "2: Expire timeslice and recalculate deadline."
read -rp "`echo $'\n> 0 (Recommended option for gaming on PDS - "tkg" default)\n 1 (Default, but can lead to stability issues on some platforms)\n 2 (Usually the slowest option for PDS, not recommended unless you have issues with 0 or 1)\n [0-2?]: '`" _sched_yield_type;
fi
if [ "$_sched_yield_type" == "1" ]; then
msg2 "Using default CPU sched yield type (1)"
elif [ "$_sched_yield_type" == "2" ]; then
sed -i -e 's/int sched_yield_type __read_mostly = 1;/int sched_yield_type __read_mostly = 2;/' ./kernel/sched/pds.c
else
sed -i -e 's/int sched_yield_type __read_mostly = 1;/int sched_yield_type __read_mostly = 0;/' ./kernel/sched/pds.c
fi
# do not run 'make olddefconfig' as it sets default options
yes "" | make config >/dev/null
make -s kernelrelease > version
msg2 "Prepared %s version %s" "$pkgbase" "$(<version)"
[[ -z "$_makenconfig" ]] || make nconfig
# save configuration for later reuse
cat .config > "$startdir/config.last"
}
build() {
cd $_reponame
make bzImage modules htmldocs
}
_package() {
pkgdesc="The $pkgdesc kernel and modules $_pkgdesc_extra"
depends=(
coreutils
kmod
initramfs
thrash-protect
)
optdepends=(
"crda: to set the correct wireless channels of your country"
"linux-firmware: firmware images needed for some devices"
)
provides=("$pkgbase=$pkgver")
cd $_reponame
local kernver="$(<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 "$(make -s image_name)" "$modulesdir/vmlinuz"
# Used by mkinitcpio to name the kernel
echo "$pkgbase" | install -Dm644 /dev/stdin "$modulesdir/pkgbase"
msg2 "Installing modules..."
make INSTALL_MOD_PATH="$pkgdir/usr" modules_install
# remove build and source links
rm "$modulesdir"/{source,build}
msg2 "Fixing permissions..."
chmod -Rc u=rwX,go=rX "$pkgdir"
}
_package-headers() {
pkgdesc="Header files and scripts for building modules for $pkgdesc kernel $_pkgdesc_extra"
depends=("$pkgbase=$pkgver")
provides=(
"$pkgbase-headers=$pkgver"
"linux-headers=$pkgver"
)
cd $_reponame
local builddir="$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/$pkgbase"
msg2 "Fixing permissions..."
chmod -Rc u=rwX,go=rX "$pkgdir"
}
_package-docs() {
pkgdesc="Documentation for the $pkgdesc kernel"
cd $_srcname
local builddir="$pkgdir/usr/lib/modules/$(<version)/build"
msg2 "Installing documentation..."
local src dst
while read -rd '' src; do
dst="${src#Documentation/}"
dst="$builddir/Documentation/${dst#output/}"
install -Dm644 "$src" "$dst"
done < <(find Documentation -name '.*' -prune -o ! -type d -print0)
msg2 "Adding symlink..."
mkdir -p "$pkgdir/usr/share/doc"
ln -sr "$builddir/Documentation" "$pkgdir/usr/share/doc/$pkgbase"
msg2 "Fixing permissions..."
chmod -Rc u=rwX,go=rX "$pkgdir"
}
pkgname=(
"$pkgbase"
"$pkgbase-headers"
"$pkgbase-docs"
)
for _p in "${pkgname[@]}"; do
eval "package_$_p() {
$(declare -f "_package${_p#$pkgbase}")
_package${_p#$pkgbase}
}"
done
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