scripts/lttng-modules/param-build.sh

   1 #!/bin/sh -exu
   2 #
   3 # Copyright (C) 2016 - Michael Jeanson <mjeanson@efficios.com>
   4 #
   5 # This program is free software: you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation, either version 3 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 # Kernel version compare functions
  19 verlte() {
  20     [  "$1" = "`printf '%s\n%s' $1 $2 | sort -V | head -n1`" ]
  21 }
  22
  23 verlt() {
  24     [ "$1" = "$2" ] && return 1 || verlte $1 $2
  25 }
  26
  27 vergte() {
  28     [  "$1" = "`printf '%s\n%s' $1 $2 | sort -V | tail -n1`" ]
  29 }
  30
  31 vergt() {
  32     [ "$1" = "$2" ] && return 1 || vergte $1 $2
  33 }
  34
  35 # Use all CPU cores
  36 NPROC=$(nproc)
  37
  38 SRCDIR="${WORKSPACE}/lttng-modules"
  39 BUILDDIR="${WORKSPACE}/build"
  40 LNXSRCDIR="${WORKSPACE}/linux"
  41 LNXBUILDDIR="${WORKSPACE}/linux-build"
  42
  43 # Create build directory
  44 mkdir -p "${BUILDDIR}" "${LNXBUILDDIR}"
  45
  46 # Enter linux source dir
  47 cd "${LNXSRCDIR}"
  48
  49 # Prepare linux sources for modules OOT build
  50 make O="${LNXBUILDDIR}" defconfig
  51
  52 # Enable CONFIG_KALLSYMS_ALL
  53 sed -i "s/# CONFIG_KALLSYMS_ALL is not set/CONFIG_KALLSYMS_ALL=y/g" "${LNXBUILDDIR}"/.config
  54
  55 # Build to out of tree dir
  56 make O="${LNXBUILDDIR}" modules_prepare
  57
  58 case "$kversion" in
  59   Ubuntu*)
  60     #fakeroot debian/rules clean
  61     #fakeroot debian/rules genconfigs
  62     #cp CONFIGS/amd64-config.flavour.generic .config
  63
  64     # Add Ubuntu ABI number to kernel headers, this is normally done by the packaging code
  65     ABINUM=$(echo $kversion | grep -P -o 'Ubuntu-(lts-)?.*-\K\d+(?=\..*)')
  66     echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> ${LNXBUILDDIR}/include/generated/utsrelease.h
  67     ;;
  68 esac
  69
  70 # Get kernel version from source tree
  71 cd "${LNXBUILDDIR}"
  72 KVERSION=$(make kernelversion)
  73
  74 # Enter source dir
  75 cd "${SRCDIR}"
  76
  77 # kernels 3.10 to 3.10.13 and 3.11 to 3.11.2 introduce a deadlock in the
  78 # timekeeping subsystem. We want those build to fail.
  79 if { vergte "$KVERSION" "3.10" && verlte "$KVERSION" "3.10.13"; } || \
  80    { vergte "$KVERSION" "3.11" && verlte "$KVERSION" "3.11.2"; }; then
  81
  82     set +e
  83
  84     # Build modules
  85     KERNELDIR="${LNXBUILDDIR}" make -j${NPROC} V=1
  86
  87     # We expect this build to fail, if it doesn't, fail the job.
  88     if [ "$?" -eq 0 ]; then
  89         exit 1
  90     fi
  91
  92     # We have to publish at least one file or the build will fail
  93     echo "This kernel is broken, there is a deadlock in the timekeeping subsystem." > "${BUILDDIR}/BROKEN.txt"
  94
  95     set -e
  96
  97 else # Regular build
  98
  99     # Build modules
 100     KERNELDIR="${LNXBUILDDIR}" make -j${NPROC} V=1
 101
 102     # Install modules to build dir
 103     KERNELDIR="${LNXBUILDDIR}" make INSTALL_MOD_PATH="${BUILDDIR}" modules_install
 104 fi
 105
 106 # EOF