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# Maintainer: graysky <therealgraysky AT protonmail DOT com>
# Contributor: Jan Alexander Steffens (heftig) <jan.steffens@gmail.com>
### BUILD OPTIONS
# Any/all of the next three variables may be set to ANYTHING
# that is not null to enable their respective build options
# Tweak kernel options prior to a build via nconfig
_makenconfig=
# Only compile select modules to reduce the number of modules built
#
# To keep track of which modules are needed for your specific system/hardware,
# give module_db a try: https://aur.archlinux.org/packages/modprobed-db
# This PKGBUILD reads the database kept if it exists
# More at this wiki page ---> https://wiki.archlinux.org/index.php/Modprobed-db
_localmodcfg=
# Compile using clang rather than gcc
_clangbuild=
### IMPORTANT: Do no edit below this line unless you know what you're doing
pkgbase=linux-ck
pkgver=6.11.10
_upstream=arch1
pkgrel=1
arch=(x86_64)
url="https://wiki.archlinux.org/index.php/Linux-ck"
license=(GPL-2.0-only)
makedepends=(
bc
cpio
gettext
libelf
pahole
perl
python
tar
xz
)
[[ -n "$_clangbuild" ]] && makedepends+=(clang llvm lld python)
options=(
!debug
!strip
)
# https://ck-hack.blogspot.com/2021/08/514-and-future-of-muqss-and-ck-once.html
# acknowledgment to xanmod for initially keeping the hrtimer patches up to date
_ckhrtimer=linux-6.11.y
_commit=7bdeefd29a299f812f1d14ef7ef46bdb32ed5b6d
_gcc_more_v=20241018
source=(
"https://www.kernel.org/pub/linux/kernel/v6.x/linux-$pkgver.tar".{xz,sign}
config # the main kernel config file
#"https://github.com/archlinux/linux/releases/download/v$pkgver-$_upstream/linux-v$pkgver-$_upstream.patch.zst"
linux-v6.10.10-arch1.patch
"more-uarches-$_gcc_more_v.tar.gz::https://github.com/graysky2/kernel_compiler_patch/archive/$_gcc_more_v.tar.gz"
"ck-hrtimer-$_commit.tar.gz::https://github.com/graysky2/linux-patches/archive/$_commit.tar.gz"
)
validpgpkeys=(
ABAF11C65A2970B130ABE3C479BE3E4300411886 # Linus Torvalds
647F28654894E3BD457199BE38DBBDC86092693E # Greg Kroah-Hartman
)
sha256sums=('4bc184915290629d61f935aa1eb1b6e711b8e47d8f289a39f0d584ecbdb4fe77'
'SKIP'
'031a9b86734de040aa0bc46dcdbeef509d01de8ead9cc90355ea49757b7766e8'
'2c1bb3a10418733fe2160764940b879e897a723dbc36c62c05c33205b456534e'
'b3fd8b1c5bbd39a577afcccf6f1119fdf83f6d72119f4c0811801bdd51d1bc61'
'afa9bf94d6820c86041c7d55c25b04fe7f1aec86adbe45cb282d285901e827b3')
prepare() {
cd linux-${pkgver}
msg2 "Setting version..."
echo "-$pkgrel" > localversion.10-pkgrel
echo "${pkgbase#linux}" > localversion.20-pkgname
msg2 "Applying Arch Linux $_upstream patch set"
#patch -p1 -i ../linux-v$pkgver-$_upstream.patch
patch -p1 -i ../linux-v6.10.10-arch1.patch
# remove the -archx suffix
sed -i s'/^EXTRAVERSION =.*/EXTRAVERSION =/' Makefile
echo "Setting config..."
cp ../config .config
# https://bbs.archlinux.org/viewtopic.php?pid=1824594#p1824594
scripts/config --enable CONFIG_PSI_DEFAULT_DISABLED
# https://bbs.archlinux.org/viewtopic.php?pid=1863567#p1863567
scripts/config --disable CONFIG_LATENCYTOP
scripts/config --disable CONFIG_SCHED_DEBUG
# FS#66613
# https://bugzilla.kernel.org/show_bug.cgi?id=207173#c6
scripts/config --disable CONFIG_KVM_WERROR
# ck recommends 1000 Hz tick and the hrtimer patches in lieu of ck1
scripts/config --enable CONFIG_HZ_1000
# these are ck's htrimer patches
echo "Patching with ck hrtimer patches..."
for i in ../linux-patches-"$_commit"/"$_ckhrtimer"/ck-hrtimer/0*.patch; do
patch -Np1 -i $i
done
if [[ -n "$_clangbuild" ]]; then
scripts/config -e LTO_CLANG_THIN
export _LLVM=1
export _LLVM_IAS=$_LLVM
fi
diff -u ../config .config || :
# https://github.com/graysky2/kernel_gcc_patch
# make sure to apply after olddefconfig to allow the next section
msg2 "Patching to enable GCC optimization for other uarchs..."
patch -Np1 -i "$srcdir/kernel_compiler_patch-$_gcc_more_v/more-ISA-levels-and-uarches-for-kernel-6.1.79+.patch"
# since there are multiple options in the above patch (uarch + ISA setting), the yes method that worked
# in the past will no long work so remove it
make LLVM=$_LLVM LLVM_IAS=$_LLVM olddefconfig
# @@@ this is a sed target for repo-ck build script
### Optionally load needed modules for the make localmodconfig
# See https://aur.archlinux.org/packages/modprobed-db
if [ -n "$_localmodcfg" ]; then
if [ -f $HOME/.config/modprobed.db ]; then
echo "Running Steven Rostedt's make localmodconfig now"
make LLVM=$_LLVM LLVM_IAS=$_LLVM LSMOD="$HOME/.config/modprobed.db" localmodconfig
else
echo "No modprobed.db data found"
exit
fi
fi
make -s kernelrelease > version
msg2 "Prepared $pkgbase version $(<version)"
[[ -z "$_makenconfig" ]] || make LLVM=$_LLVM LLVM_IAS=$_LLVM nconfig
# save configuration for later reuse
cat .config > "${startdir}/config.last"
# uncomment if you want to build with distcc
### sed -i '/HAVE_GCC_PLUGINS/d' arch/x86/Kconfig
}
build() {
cd linux-${pkgver}
make LLVM=$_LLVM LLVM_IAS=$_LLVM all
make LLVM=$_LLVM LLVM_IAS=$_LLVM -C tools/bpf/bpftool vmlinux.h feature-clang-bpf-co-re=1
}
_package() {
pkgdesc="The Linux kernel and modules with ck's hrtimer patches"
depends=(
coreutils
initramfs
kmod
)
optdepends=(
'wireless-regdb: to set the correct wireless channels of your country'
'linux-firmware: firmware images needed for some devices'
)
provides=(
KSMBD-MODULE
VIRTUALBOX-GUEST-MODULES
WIREGUARD-MODULE
)
replaces=(
virtualbox-guest-modules-arch
wireguard-arch
)
#groups=('ck-generic')
cd linux-${pkgver}
local modulesdir="$pkgdir/usr/lib/modules/$(<version)"
echo "Installing boot image..."
# systemd expects to find the kernel here to allow hibernation
# https://github.com/systemd/systemd/commit/edda44605f06a41fb86b7ab8128dcf99161d2344
#install -Dm644 "$(make -s image_name)" "$modulesdir/vmlinuz"
#
# hard-coded path in case user defined CC=xxx for build which causes errors
# see this FS https://bugs.archlinux.org/task/64315
install -Dm644 arch/x86/boot/bzImage "$modulesdir/vmlinuz"
# Used by mkinitcpio to name the kernel
echo "$pkgbase" | install -Dm644 /dev/stdin "$modulesdir/pkgbase"
echo "Installing modules..."
ZSTD_CLEVEL=19 make LLVM=$_LLVM LLVM_IAS=$_LLVM INSTALL_MOD_PATH="$pkgdir/usr" INSTALL_MOD_STRIP=1 \
DEPMOD=/doesnt/exist modules_install # Suppress depmod
# remove build link
rm "$modulesdir"/build
}
_package-headers() {
pkgdesc="Headers and scripts for building modules for ${pkgbase/linux/Linux} kernel"
depends=(pahole "$pkgbase") # added to keep kernel and headers packages matched
#groups=('ck-generic')
cd linux-${pkgver}
local builddir="$pkgdir/usr/lib/modules/$(<version)/build"
echo "Installing build files..."
install -Dt "$builddir" -m644 .config Makefile Module.symvers System.map \
localversion.* version vmlinux tools/bpf/bpftool/vmlinux.h
install -Dt "$builddir/kernel" -m644 kernel/Makefile
install -Dt "$builddir/arch/x86" -m644 arch/x86/Makefile
cp -t "$builddir" -a scripts
# required when STACK_VALIDATION is enabled
install -Dt "$builddir/tools/objtool" tools/objtool/objtool
# required when DEBUG_INFO_BTF_MODULES is enabled
install -Dt "$builddir/tools/bpf/resolve_btfids" tools/bpf/resolve_btfids/resolve_btfids
echo "Installing headers..."
cp -t "$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
# https://bugs.archlinux.org/task/13146
install -Dt "$builddir/drivers/media/i2c" -m644 drivers/media/i2c/msp3400-driver.h
# https://bugs.archlinux.org/task/20402
install -Dt "$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
# https://bugs.archlinux.org/task/71392
install -Dt "$builddir/drivers/iio/common/hid-sensors" -m644 drivers/iio/common/hid-sensors/*.h
echo "Installing KConfig files..."
find . -name 'Kconfig*' -exec install -Dm644 {} "$builddir/{}" \;
echo "Removing unneeded architectures..."
local arch
for arch in "$builddir"/arch/*/; do
[[ $arch = */x86/ ]] && continue
echo "Removing $(basename "$arch")"
rm -r "$arch"
done
echo "Removing documentation..."
rm -r "$builddir/Documentation"
echo "Removing broken symlinks..."
find -L "$builddir" -type l -printf 'Removing %P\n' -delete
echo "Removing loose objects..."
find "$builddir" -type f -name '*.o' -printf 'Removing %P\n' -delete
echo "Stripping build tools..."
local file
while read -rd '' file; do
case "$(file -Sib "$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)
echo "Stripping vmlinux..."
strip -v $STRIP_STATIC "$builddir/vmlinux"
echo "Adding symlink..."
mkdir -p "$pkgdir/usr/src"
ln -sr "$builddir" "$pkgdir/usr/src/$pkgbase"
}
pkgname=("$pkgbase" "$pkgbase-headers")
for _p in "${pkgname[@]}"; do
eval "package_$_p() {
$(declare -f "_package${_p#$pkgbase}")
_package${_p#$pkgbase}
}"
done
# vim:set ts=8 sts=2 sw=2 et:
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