# Description: 	The latest stable kernel version with BFQ patch
# URL: 			http://algo.ing.unimo.it/people/paolo/disk_sched/sources.php
# Packagers: 	pierre at nutyx dot org, tnut at nutyx dot org, berlius at nutyx dot com

PKGMK_IGNORE_UNPACK="yes"
PKGMK_NO_STRIP="yes"
PKGMK_GROUPS=(devel doc)

name=kernel-bfq
version=4.3
release=1
_version=${version%.*}

source=(https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-$version.tar.xz
		https://pf.natalenko.name/mirrors/bfq/4.3.0-v7r8/0001-block-cgroups-kconfig-build-bits-for-BFQ-v7r8-4.3.patch
		https://pf.natalenko.name/mirrors/bfq/4.3.0-v7r8/0002-block-introduce-the-BFQ-v7r8-I-O-sched-for-4.3.patch
		https://pf.natalenko.name/mirrors/bfq/4.3.0-v7r8/0003-block-bfq-add-Early-Queue-Merge-EQM-to-BFQ-v7r8-for-4.3.0.patch
		$name.config $name.config_64 )

build(){

bsdtar -p -o -C $SRC -xf linux-$version.tar.xz

cd linux-$version

if [ -f $SRC/0001-block-cgroups-kconfig-build-bits-for-BFQ-v7r8-4.3.patch ]; then
	patch -Np1 -i $SRC/0001-block-cgroups-kconfig-build-bits-for-BFQ-v7r8-4.3.patch  
fi

if [ -f $SRC/0002-block-introduce-the-BFQ-v7r8-I-O-sched-for-4.3.patch ]; then
	patch -Np1 -i $SRC/0002-block-introduce-the-BFQ-v7r8-I-O-sched-for-4.3.patch 
fi

if [ -f $SRC/0003-block-bfq-add-Early-Queue-Merge-EQM-to-BFQ-v7r8-for-4.3.0.patch ]; then
	patch -Np1 -i $SRC/0003-block-bfq-add-Early-Queue-Merge-EQM-to-BFQ-v7r8-for-4.3.0.patch
fi

make mrproper
case `uname -m` in
	x86_64)
		cp -v $SRC/$name.config_64 ./.config;;
	i?86)
		cp -v $SRC/$name.config ./.config;
esac

#make xconfig
#make nconfig
make menuconfig

make || make -j1

case `uname -m` in
        x86_64)
		cp .config $SRC/$name.config_64;;
        i?86)
		cp .config $SRC/$name.config;;
esac

# Install modules
cd $SRC/linux-$version
sed -i "/rm\ -rf\ \$(MODLIB)\/kernel/d" Makefile
make INSTALL_MOD_PATH=$PKG modules_install || make -j1 INSTALL_MOD_PATH=$PKG modules_install
mkdir -p $PKG/boot
case `uname -m` in
        x86_64)
                cp  System.map \
                $PKG/boot/System_64.map-$version
                cp  .config    \
                $PKG/boot/config_64-$version
                cp  arch/x86_64/boot/bzImage \
                $PKG/boot/$name-$version ;;
        i?86)
                cp  System.map \
                $PKG/boot/System.map-$version
                cp  .config \
                $PKG/boot/config-$version
                cp  arch/i386/boot/bzImage \
                $PKG/boot/$name-$version ;;
esac

cd $PKG/lib/modules/${version}*/

mkdir -p $PKG/usr/src

mv $SRC/linux-$version $PKG/usr/src/
rm {build,source}

ln -sv /usr/src/linux-$version build
ln -sv /usr/src/linux-$version source

mkdir $SRC/linux-$version
mv $PKG/usr/src/linux-$version/Documentation \
$SRC/linux-$version

# Firmware are in linux-firmware
rm -rf $PKG/lib/firmware

# post-install autogen
INITRD_VERSION="`basename $PKG/lib/modules/*`"
echo "mkinitramfs $INITRD_VERSION" > $PKGMK_ROOT/$name.post-install
echo "[ -f boot/initrd ] && rm boot/initrd" >> $PKGMK_ROOT/$name.post-install
echo "ln -sf initrd-$INITRD_VERSION boot/initrd" >> $PKGMK_ROOT/$name.post-install
echo "ln -sf $name-$version boot/kernel" >> $PKGMK_ROOT/$name.post-install

#pre-install autogen
cd $SRC
if [ -f aaabasicfs-${AAABASICFS}.tar.xz ]; then
 bsdtar -p -o -C $SRC -xf aaabasicfs-${AAABASICFS}.tar.xz
 echo ". lib/lsb/init-functions" >  $PKGMK_ROOT/$name.pre-install
 for FILE in `tar --list --file aaabasicfs-${AAABASICFS}.tar.xz|grep -v /$`
 do
   echo "log_info_msg \"update $FILE\"" >> $PKGMK_ROOT/$name.pre-install
   echo "cat  > $FILE << \"END_OF_FILE\"" >> $PKGMK_ROOT/$name.pre-install
   cat $SRC/$FILE >> $PKGMK_ROOT/$name.pre-install
   echo "END_OF_FILE" >> $PKGMK_ROOT/$name.pre-install
   echo "evaluate_retval" >> $PKGMK_ROOT/$name.pre-install
 done
fi
}
devel() {

cd $PKG
rm -r usr/src/linux-$version/{tools,ipc,init,drivers,firmware,fs,mm,samples,security,sound,virt}
for i in alpha arc arm arm26 arm64 avr32 blackfin c6x \
cris frv h8300 hexagon ia64 m32r m68k m68knommu metag \
mips microblaze mn10300 openrisc parisc powerpc ppc s390 \
score sh sh64 sparc sparc64 tile unicore32 um v850 xtensa
do rm -rf usr/src/linux-$version/arch/$i
done

bsdtar -cf \
$PKGMK_PACKAGE_DIR/$name.devel#$version-any.mps \
usr/src/linux-$version

rm -r usr
}

doc() {

cd $PKG
mkdir -p usr/share/doc/linux-$version
mv $SRC/linux-version/Documentation \
usr/share/doc/linux-$version

bsdtar -cf \
$PKGMK_PACKAGE_DIR/$name.doc#$version-any.mps \
usr/share/doc/linux-$version

rm -r usr
}