path: root/PKGBUILD

# Maintainer: Piotr Gorski <lucjan.lucjanov@gmail.com>
# Contributor: Jan Alexander Steffens (heftig) <jan.steffens@gmail.com>
# Contributor: Tobias Powalowski <tpowa@archlinux.org>
# Contributor: Thomas Baechler <thomas@archlinux.org>

### BUILD OPTIONS
# Set these variables to ANYTHING that is not null to enable them

### Tweak kernel options prior to a build via nconfig
_makenconfig=

### Tweak kernel options prior to a build via menuconfig
_makemenuconfig=

### Tweak kernel options prior to a build via xconfig
_makexconfig=

### Tweak kernel options prior to a build via gconfig
_makegconfig=

# NUMA is optimized for multi-socket motherboards.
# A single multi-core CPU actually runs slower with NUMA enabled.
# See, https://bugs.archlinux.org/task/31187
_NUMAdisable=y

# Compile ONLY used modules to VASTLYreduce 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=

# Use the current kernel's .config file
# Enabling this option will use the .config of the RUNNING kernel rather than
# the ARCH defaults. Useful when the package gets updated and you already went
# through the trouble of customizing your config options.  NOT recommended when
# a new kernel is released, but again, convenient for package bumps.
_use_current=

### Running with a 1000 HZ tick rate
_1k_HZ_ticks=

### Do not edit below this line unless you know what you're doing

pkgbase=linux-bfq
# pkgname=('linux-bfq' 'linux-bfq-headers' 'linux-bfq-docs')
_major=5.5
_minor=8
pkgver=${_major}.${_minor}
_srcname=linux-${pkgver}
pkgrel=2
pkgdesc='Linux BFQ-dev'
arch=('x86_64')
url="https://github.com/sirlucjan/bfq-mq-lucjan"
license=('GPL2')
options=('!strip')
makedepends=('kmod' 'bc' 'libelf' 'python-sphinx' 'python-sphinx_rtd_theme'
             'graphviz' 'imagemagick')
#_lucjanpath="https://raw.githubusercontent.com/sirlucjan/kernel-patches/master/${_major}"
_lucjanpath="https://gitlab.com/sirlucjan/kernel-patches/raw/master/${_major}"
_bfq_rev_path="bfq-reverts-sep"
_bfq_rev_patch="0001-Revert-block-bfq-do-not-plug-I-O-for-bfq_queues-with.patch"
_bfq_path="bfq-dev-lucjan"
_bfq_ver="v11"
_bfq_rel="r2K200306"
_bfq_patch="${_major}-${_bfq_path}-${_bfq_ver}-${_bfq_rel}.patch"
_gcc_path="https://raw.githubusercontent.com/graysky2/kernel_gcc_patch/master"
_gcc_patch="enable_additional_cpu_optimizations_for_gcc_v9.1+_kernel_v5.5+.patch"

source=("https://www.kernel.org/pub/linux/kernel/v5.x/${_srcname}.tar.xz"
        "https://www.kernel.org/pub/linux/kernel/v5.x/${_srcname}.tar.sign"
        "${_lucjanpath}/${_bfq_rev_path}/${_bfq_rev_patch}"
        "${_lucjanpath}/${_bfq_path}/${_bfq_patch}"
        "${_gcc_path}/${_gcc_patch}"
        "${_lucjanpath}/arch-patches-v12-sep/0001-ZEN-Add-sysctl-and-CONFIG-to-disallow-unprivileged-C.patch"
        "${_lucjanpath}/arch-patches-v12-sep/0002-iwlwifi-pcie-restore-support-for-Killer-Qu-C0-NICs.patch"
        "${_lucjanpath}/arch-patches-v12-sep/0003-iwlwifi-mvm-Do-not-require-PHY_SKU-NVM-section-for-3.patch"
        "${_lucjanpath}/arch-patches-v12-sep/0004-drm-Remove-PageReserved-manipulation-from-drm_pci_al.patch"
        "${_lucjanpath}/arch-patches-v12-sep/0005-drm-i915-Serialise-i915_active_acquire-with-__active.patch"
        "${_lucjanpath}/arch-patches-v12-sep/0006-drm-i915-gem-Take-runtime-pm-wakeref-prior-to-unbind.patch"
        "${_lucjanpath}/arch-patches-v12-sep/0007-drm-i915-gem-Avoid-parking-the-vma-as-we-unbind.patch"
        "${_lucjanpath}/arch-patches-v12-sep/0008-drm-i915-gem-Try-to-flush-pending-unbind-events.patch"
        "${_lucjanpath}/arch-patches-v12-sep/0009-drm-i915-gem-Reinitialise-the-local-list-before-repe.patch"
        "${_lucjanpath}/arch-patches-v12-sep/0010-drm-i915-Add-a-simple-is-bound-check-before-unbindin.patch"
        "${_lucjanpath}/arch-patches-v12-sep/0011-drm-i915-Introduce-a-vma.kref.patch"
         # the main kernel config files
        'config')

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 $_srcname

    ### Setting version
        echo "Setting version..."
        sed -e "/^EXTRAVERSION =/s/=.*/=/" -i Makefile
        scripts/setlocalversion --save-scmversion
        echo "-$pkgrel" > localversion.10-pkgrel
        echo "${pkgbase#linux}" > localversion.20-pkgname

    ### Patching sources
        local src
        for src in "${source[@]}"; do
            src="${src%%::*}"
            src="${src##*/}"
            [[ $src = *.patch ]] || continue
        echo "Applying patch $src..."
        patch -Np1 < "../$src"
        done

    ### Setting config
        echo "Setting config..."
        cp ../config .config
        make olddefconfig

    ### Prepared version
        make -s kernelrelease > version
        echo "Prepared $pkgbase version $(<version)"

    ### Optionally use running kernel's config
	# code originally by nous; http://aur.archlinux.org/packages.php?ID=40191
	if [ -n "$_use_current" ]; then
		if [[ -s /proc/config.gz ]]; then
			echo "Extracting config from /proc/config.gz..."
			# modprobe configs
			zcat /proc/config.gz > ./.config
		else
			warning "Your kernel was not compiled with IKCONFIG_PROC!"
			warning "You cannot read the current config!"
			warning "Aborting!"
			exit
		fi
	fi

    ### Optionally set tickrate to 1000
	if [ -n "$_1k_HZ_ticks" ]; then
		echo "Setting tick rate to 1k..."
		sed -i -e 's/^CONFIG_HZ_300=y/# CONFIG_HZ_300 is not set/' \
                    -i -e 's/^# CONFIG_HZ_1000 is not set/CONFIG_HZ_1000=y/' \
                    -i -e 's/^CONFIG_HZ=300/CONFIG_HZ=1000/' ./.config
	fi

    ### Optionally disable NUMA for 64-bit kernels only
        # (x86 kernels do not support NUMA)
        if [ -n "$_NUMAdisable" ]; then
            echo "Disabling NUMA from kernel config..."
            sed -i -e 's/CONFIG_NUMA=y/# CONFIG_NUMA is not set/' \
                -i -e '/CONFIG_AMD_NUMA=y/d' \
                -i -e '/CONFIG_X86_64_ACPI_NUMA=y/d' \
                -i -e '/CONFIG_NODES_SPAN_OTHER_NODES=y/d' \
                -i -e '/# CONFIG_NUMA_EMU is not set/d' \
                -i -e '/CONFIG_NODES_SHIFT=6/d' \
                -i -e '/CONFIG_NEED_MULTIPLE_NODES=y/d' \
                -i -e '/# CONFIG_MOVABLE_NODE is not set/d' \
                -i -e '/CONFIG_USE_PERCPU_NUMA_NODE_ID=y/d' \
                -i -e '/CONFIG_ACPI_NUMA=y/d' ./.config
        fi

    ### Optionally load needed modules for the make localmodconfig
        # See https://aur.archlinux.org/packages/modprobed-db
        if [ -n "$_localmodcfg" ]; then
            if [ -f $HOME/.config/modprobed.db ]; then
            echo "Running Steven Rostedt's make localmodconfig now"
            make LSMOD=$HOME/.config/modprobed.db localmodconfig
        else
            echo "No modprobed.db data found"
            exit
            fi
        fi

    ### Running make nconfig
	[[ -z "$_makenconfig" ]] ||  make nconfig

    ### Running make menuconfig
	[[ -z "$_makemenuconfig" ]] || make menuconfig

    ### Running make xconfig
	[[ -z "$_makexconfig" ]] || make xconfig

    ### Running make gconfig
	[[ -z "$_makegconfig" ]] || make gconfig

    ### Save configuration for later reuse
	cat .config > "${startdir}/config.last"
}

build() {
  cd $_srcname

  make all
  make htmldocs
}

_package() {
    pkgdesc="The $pkgdesc kernel and modules"
    depends=('coreutils' 'kmod' 'initramfs')
    optdepends=('crda: to set the correct wireless channels of your country'
                'linux-firmware: firmware images needed for some devices'
                'modprobed-db: Keeps track of EVERY kernel module that has ever been probed - useful for those of us who make localmodconfig')

  cd $_srcname
  local kernver="$(<version)"
  local modulesdir="$pkgdir/usr/lib/modules/$kernver"

  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"

  # Used by mkinitcpio to name the kernel
  echo "$pkgbase" | install -Dm644 /dev/stdin "$modulesdir/pkgbase"

  echo "Installing modules..."
  make INSTALL_MOD_PATH="$pkgdir/usr" modules_install

  # remove build and source links
  rm "$modulesdir"/{source,build}

  echo "Fixing permissions..."
  chmod -Rc u=rwX,go=rX "$pkgdir"
}

_package-headers() {
   pkgdesc="Headers and scripts for building modules for the $pkgdesc kernel"
   depends=('linux-bfq')

  cd $_srcname
  local builddir="$pkgdir/usr/lib/modules/$(<version)/build"

  echo "Installing build files..."
  install -Dt "$builddir" -m644 .config Makefile Module.symvers System.map \
    localversion.* version vmlinux
  install -Dt "$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}

  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

  # 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

  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 "$(file -bi "$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)

  echo "Adding symlink..."
  mkdir -p "$pkgdir/usr/src"
  ln -sr "$builddir" "$pkgdir/usr/src/$pkgbase"

  echo "Fixing permissions..."
  chmod -Rc u=rwX,go=rX "$pkgdir"
}

_package-docs() {
    pkgdesc="Documentation for the $pkgdesc kernel"
    depends=('linux-bfq')

  cd $_srcname
  local builddir="$pkgdir/usr/lib/modules/$(<version)/build"

  echo "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)

  echo "Adding symlink..."
  mkdir -p "$pkgdir/usr/share/doc"
  ln -sr "$builddir/Documentation" "$pkgdir/usr/share/doc/$pkgbase"

  echo "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

sha512sums=('0aecbfaae033834db85d17349aeb22d62168244eb2a5db627c7bcab8a2800dfae6e21dda29efb29c3d78fae99ef673d22471ea433098a870113e2db67252a093'
            'SKIP'
            '3e5a8fed7befb0932256a5b3c8c67c91ed1fd0873bd332b39886be6d1fd0b350fa8ac3c6e71df838f4a8d4014262c800f7731f0c314272ff9ee11e6933a04583'
            '667bb2f76c165a6bef95548701727ea5c687f69975665f41d9e792c31e56faf57d28f0e644fe45648fda11080a1d069a9769ce95bdd6e5a194f5cc08632e3589'
            '52b14ef834769d2b4567e756a4485995acd2e3f5b989cbb53f9b113b42ff67b736bbcb284b95fe15c9efb846fd12320a26a131e4ce9af50b521114d274b472f1'
            'd28d39ec80fae7f661e53fe8c39a7d43e21cca149ca29c606e88a1e54ed9fd1d0ceaaa0e7dd11e07a34a2e1c9f66ace004276983d62cc132835e9277d8ac87ef'
            'cd1e0e3f6761c728137946156a4595f5632f570b9b56cfb2cf01a7936fe95638d5508fe9eeb1150eaca8c8e5747afefc33f8af1d88156d484f78d9e75c155b43'
            '77114705a123736d801977f687df212906ed75479d9df9a8bd6ce948159bf7591c541178572596fda315aa8b40311c2202d19294b3d25a416fea1dfa3c441845'
            'daf5f195b276b7e540af754f6d0329d95c189d60bc54877c5f1fcb1e70c87709b99abd2ba2b8b85da40f249550bc8f5195d89c8735de23ee1afc7434636ebfc4'
            '79004402638878f665485aebfa4bb401fd30c0816901fa037aa49e60e92956aa59a6346a967c487c5a8d17cab78ea93379880c0d46641a787927eadd7ef9e50a'
            '4ab45597c82ae265c5fd8f62e91bc832f7035cd1f27c7defbd5bbccc3e717eddcf1b3a8f708863ff9a36fe75f21a7b41447dcf5bb5914f07dae4a11e16a986b6'
            '9a08d57241ed8e1ca8cb7dc4c4b609146cf496e8c168563ff6378183b91d9b5d061df7b6170183af84907f6165d12d69512e6f3d46f4d3c864d8e2757aa8056e'
            'ea52df772a71886eb395529be14ef2318eb7007dae8b9cfd28702d210b1056bc5ce1f33e1ad16da6f337630a79334b2b8c40de355bf90d828b425f2b140fc32b'
            '3fac98d619fe3275544bbf3e74adc051b2365b1952420d462d4d5aa980696e04308c8e50ec178c36cbe6158f06a2b398cb5b7f4ddac8191b366ffced57968868'
            '53c36dab693f7d99a3fbd009594324d7a7201777d0172f3233b5c8a61d4a6ba27961fad434149a5fa69c45d240066f92a0d8ccb26736b784d75ec25f33f831b6'
            '5680c3877492177a12e4ba335ae25cc06065ab87ad28d3f5979a4bf1fc6c45c2f6b5ef622573519768514af37053528db861488d24d7856f61d608d3ec8a24e6'
            'b3162a3ba7d87d6f98148af708826adb4731f540dbeb5e8653aba92b53bb2aad8e189d3f4e62a97fff214b8a84ad364d09a830e28a05ad3e980903c34cf5a774')

validpgpkeys=(
              'ABAF11C65A2970B130ABE3C479BE3E4300411886' # Linus Torvalds
              '647F28654894E3BD457199BE38DBBDC86092693E' # Greg Kroah-Hartman
             )