scripts/lttng-modules/build.sh

   1 #!/bin/sh -exu
   2 #
   3 # Copyright (C) 2015 - Jonathan Rajotte-Julien <jonathan.rajotte-julien@efficios.com>
   4 #                      Michael Jeanson <mjeanson@efficios.com>
   5 #
   6 # This program is free software: you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation, either version 3 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 # Kernel version compare functions
  20 verlte() {
  21     [  "$1" = "`printf '%s\n%s' $1 $2 | sort -V | head -n1`" ]
  22 }
  23
  24 verlt() {
  25     [ "$1" = "$2" ] && return 1 || verlte $1 $2
  26 }
  27
  28 vergte() {
  29     [  "$1" = "`printf '%s\n%s' $1 $2 | sort -V | tail -n1`" ]
  30 }
  31
  32 vergt() {
  33     [ "$1" = "$2" ] && return 1 || vergte $1 $2
  34 }
  35
  36
  37 # Use all CPU cores
  38 NPROC=$(nproc)
  39
  40 SRCDIR="${WORKSPACE}/src/lttng-modules"
  41 BUILDDIR="${WORKSPACE}/build"
  42 LNXSRCDIR="${WORKSPACE}/src/linux"
  43 LNXBINDIR="${WORKSPACE}/deps/linux/build"
  44
  45 # Create build directory
  46 rm -rf "${BUILDDIR}"
  47 mkdir -p "${BUILDDIR}"
  48
  49 # Enter source dir
  50 cd "${SRCDIR}"
  51
  52 # Fix path to linux src in builddir Makefile
  53 sed -i "s#MAKEARGS := -C .*#MAKEARGS := -C ${LNXSRCDIR}#" "${LNXBINDIR}"/Makefile
  54
  55 # Get kernel version from source tree
  56 cd "${LNXBINDIR}"
  57 KVERSION=$(make kernelversion)
  58 cd -
  59
  60 # kernels 3.10 to 3.10.13 and 3.11 to 3.11.2 introduce a deadlock in the
  61 # timekeeping subsystem. We want those build to fail.
  62 if { vergte "$KVERSION" "3.10" && verlte "$KVERSION" "3.10.13"; } || \
  63    { vergte "$KVERSION" "3.11" && verlte "$KVERSION" "3.11.2"; }; then
  64
  65     set +e
  66
  67     # Build modules
  68     KERNELDIR="${LNXBINDIR}" make -j${NPROC} V=1 CONFIG_LTTNG=m
  69
  70     # We expect this build to fail, if it doesn't, fail the job.
  71     if [ "$?" -eq 0 ]; then
  72         exit 1
  73     fi
  74
  75     # We have to publish at least one file or the build will fail
  76     echo "This kernel is broken, there is a deadlock in the timekeeping subsystem." > "${BUILDDIR}/BROKEN.txt"
  77
  78     set -e
  79
  80 else # Regular build
  81
  82     # Build modules
  83     KERNELDIR="${LNXBINDIR}" make -j${NPROC} V=1 CONFIG_LTTNG=m
  84
  85     # Install modules to build dir
  86     KERNELDIR="${LNXBINDIR}" make INSTALL_MOD_PATH="${BUILDDIR}" modules_install
  87 fi
  88
  89 # EOF