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 ## FUNCTIONS ##
  19
  20 # Kernel version compare functions
  21 verlte() {
  22     [  "$1" = "`printf '%s\n%s' $1 $2 | sort -V | head -n1`" ]
  23 }
  24
  25 verlt() {
  26     [ "$1" = "$2" ] && return 1 || verlte $1 $2
  27 }
  28
  29 vergte() {
  30     [  "$1" = "`printf '%s\n%s' $1 $2 | sort -V | tail -n1`" ]
  31 }
  32
  33 vergt() {
  34     [ "$1" = "$2" ] && return 1 || vergte $1 $2
  35 }
  36
  37
  38 build_modules() {
  39
  40     kdir="$1"
  41     bdir="$2"
  42
  43     # Get kernel version from source tree
  44     cd "${kdir}"
  45     kversion=$(make kernelversion)
  46
  47     # Enter lttng-modules source dir
  48     cd "${LTTSRCDIR}"
  49
  50     # kernels 3.10 to 3.10.13 and 3.11 to 3.11.2 introduce a deadlock in the
  51     # timekeeping subsystem. We want those build to fail.
  52     if { vergte "$kversion" "3.10" && verlte "$kversion" "3.10.13"; } || \
  53        { vergte "$kversion" "3.11" && verlte "$kversion" "3.11.2"; }; then
  54
  55         set +e
  56
  57         # Build modules
  58         KERNELDIR="${kdir}" make -j${NPROC} V=1
  59
  60         # We expect this build to fail, if it doesn't, fail the job.
  61         if [ "$?" -eq 0 ]; then
  62             exit 1
  63         fi
  64
  65         # We have to publish at least one file or the build will fail
  66         echo "This kernel is broken, there is a deadlock in the timekeeping subsystem." > "${bdir}/BROKEN.txt"
  67
  68         set -e
  69
  70     else # Regular build
  71
  72         # Build modules against full kernel sources
  73         KERNELDIR="${kdir}" make -j${NPROC} V=1
  74
  75         # Install modules to build dir
  76         KERNELDIR="${kdir}" make INSTALL_MOD_PATH="${bdir}" modules_install
  77
  78         # Clean build dir
  79         KERNELDIR="${kdir}" make clean
  80     fi
  81 }
  82
  83
  84 ## MAIN ##
  85
  86 # Use all CPU cores
  87 NPROC=$(nproc)
  88
  89 LTTSRCDIR="${WORKSPACE}/src/lttng-modules"
  90 LNXSRCDIR="${WORKSPACE}/src/linux"
  91
  92 LNXBUILDDIR="${WORKSPACE}/build/linux"
  93 LNXHDRDIR="${WORKSPACE}/build/linux-headers"
  94
  95 LTTBUILKSRCDDIR="${WORKSPACE}/build/lttng-modules-ksrc"
  96 LTTBUILDKHDRDIR="${WORKSPACE}/build/lttng-modules-khdr"
  97
  98
  99 # Set arch specific values
 100 case "$arch" in
 101     "x86-32")
 102         karch="x86"
 103         ;;
 104
 105     "x86-64")
 106         karch="x86"
 107         ;;
 108
 109     "armhf")
 110         karch="arm"
 111         ;;
 112
 113     "arm64")
 114         karch="arm64"
 115         ;;
 116
 117     "powerpc")
 118         karch="powerpc"
 119         ;;
 120
 121     "ppc64|ppc64el")
 122         karch="powerpc"
 123         ;;
 124
 125     *)
 126         echo "Unsupported arch $arch"
 127         exit 1
 128         ;;
 129 esac
 130
 131
 132 # Create build directories
 133 mkdir -p "${LNXBUILDDIR}" "${LNXHDRDIR}"
 134
 135
 136 ## PREPARE DISTRO STYLE KERNEL HEADERS / DEVEL
 137
 138 # Enter linux source dir
 139 cd "${LNXSRCDIR}"
 140
 141 # Prepare linux sources for headers install
 142 make defconfig
 143
 144 # Enable CONFIG_KALLSYMS_ALL
 145 sed -i "s/# CONFIG_KALLSYMS_ALL is not set/CONFIG_KALLSYMS_ALL=y/g" .config
 146
 147 make modules_prepare
 148
 149 # first copy everything
 150 cp --parents `find  -type f -name "Makefile*" -o -name "Kconfig*"` "${LNXHDRDIR}"
 151
 152 if [ -s Module.symvers ]; then
 153     cp Module.symvers "${LNXHDRDIR}"
 154 fi
 155
 156 if [ -s System.map ]; then
 157     cp System.map "${LNXHDRDIR}"
 158 fi
 159
 160 if [ -s Module.markers ]; then
 161     cp Module.markers "${LNXHDRDIR}"
 162 fi
 163
 164 # then drop all but the needed Makefiles/Kconfig files
 165 rm -rf "${LNXHDRDIR}/Documentation"
 166 rm -rf "${LNXHDRDIR}/scripts"
 167 rm -rf "${LNXHDRDIR}/include"
 168
 169 cp .config "${LNXHDRDIR}"
 170 cp -a scripts "${LNXHDRDIR}"
 171
 172 if [ -d arch/${karch}/scripts ]; then
 173     cp -a arch/${karch}/scripts "${LNXHDRDIR}/arch/${karch}/" || :
 174 fi
 175
 176 if [ -f arch/${karch}/*lds ]; then
 177     cp -a arch/${karch}/*lds "${LNXHDRDIR}/arch/${karch}/" || :
 178 fi
 179
 180 rm -f "${LNXHDRDIR}/scripts/*.o"
 181 rm -f "${LNXHDRDIR}/scripts/*/*.o"
 182
 183 if [ "${karch}" = "powerpc" ]; then
 184     cp -a --parents arch/powerpc/lib/crtsavres.[So] "${LNXHDRDIR}/"
 185 fi
 186
 187 if [ -d arch/${karch}/include ]; then
 188     cp -a --parents arch/${karch}/include "${LNXHDRDIR}/"
 189 fi
 190
 191 cp -a include "${LNXHDRDIR}/include"
 192
 193 # Make sure the Makefile and version.h have a matching timestamp so that
 194 # external modules can be built
 195 if [ -s "${LNXHDRDIR}/include/generated/uapi/linux/version.h" ]; then
 196     touch -r "${LNXHDRDIR}/Makefile" "${LNXHDRDIR}/include/generated/uapi/linux/version.h"
 197 elif [ -s "${LNXHDRDIR}/include/linux/version.h" ]; then
 198     touch -r "${LNXHDRDIR}/Makefile" "${LNXHDRDIR}/include/linux/version.h"
 199 else
 200     echo "Missing version.h"
 201     exit 1
 202 fi
 203 touch -r "${LNXHDRDIR}/.config" "${LNXHDRDIR}/include/generated/autoconf.h"
 204
 205 # Copy .config to include/config/auto.conf so "make prepare" is unnecessary.
 206 cp "${LNXHDRDIR}/.config" "${LNXHDRDIR}/include/config/auto.conf"
 207
 208
 209
 210
 211 ## PREPARE FULL LINUX SOURCE TREE
 212
 213 # Enter linux source dir
 214 cd "${LNXSRCDIR}"
 215
 216 # Make sure linux source dir is clean
 217 make mrproper
 218
 219 # Prepare linux sources for modules OOT build
 220 make O="${LNXBUILDDIR}" defconfig
 221
 222 # Enable CONFIG_KALLSYMS_ALL
 223 sed -i "s/# CONFIG_KALLSYMS_ALL is not set/CONFIG_KALLSYMS_ALL=y/g" "${LNXBUILDDIR}"/.config
 224
 225 # Prepare out of tree dir for modules build
 226 make O="${LNXBUILDDIR}" modules_prepare
 227
 228 # Version specific tasks
 229 case "$kversion" in
 230   Ubuntu*)
 231     #fakeroot debian/rules clean
 232     #fakeroot debian/rules genconfigs
 233     #cp CONFIGS/amd64-config.flavour.generic .config
 234
 235     # Add Ubuntu ABI number to kernel headers, this is normally done by the packaging code
 236     ABINUM=$(echo $kversion | grep -P -o 'Ubuntu-(lts-)?.*-\K\d+(?=\..*)')
 237     echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> ${LNXBUILDDIR}/include/generated/utsrelease.h
 238     ;;
 239 esac
 240
 241 # Build modules against full kernel sources
 242 build_modules "${LNXBUILDDIR}" "${LTTBUILKSRCDDIR}"
 243
 244 # Build modules against kernel headers
 245 build_modules "${LNXHDRDIR}" "${LTTBUILDKHDRDIR}"
 246
 247 # EOF