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 prepare_lnx_sources() {
  39
  40     outdir=$1
  41
  42     if [ "$outdir" = "." ]; then
  43       koutput=""
  44     else
  45       koutput="O=\"${outdir}\""
  46     fi
  47
  48     # Generate kernel configuration
  49     case "$kversion" in
  50       Ubuntu*)
  51         fakeroot debian/rules clean
  52         fakeroot debian/rules genconfigs
  53         cp CONFIGS/"${ubuntu_config}" "${outdir}"/.config
  54         ;;
  55       *)
  56         # Que sera sera
  57         make "${vanilla_config}" CC="$CC" ${koutput}
  58         ;;
  59     esac
  60
  61     # GCC 4.8
  62     sed -i "s/CONFIG_CC_STACKPROTECTOR_STRONG=y/# CONFIG_CC_STACKPROTECTOR_STRONG is not set/g" "${outdir}"/.config
  63
  64     # Don't try to sign modules
  65     sed -i "s/CONFIG_MODULE_SIG=y/# CONFIG_MODULE_SIG is not set/g" "${outdir}"/.config
  66
  67     # Disable kernel stack frame correctness validation, introduced in 4.6.0 and currently fails
  68     sed -i "s/CONFIG_STACK_VALIDATION=y/# CONFIG_STACK_VALIDATION is not set/g" "${outdir}"/.config
  69
  70     # Set required options
  71     {
  72         echo "CONFIG_KPROBES=y";
  73         echo "CONFIG_FTRACE=y";
  74         echo "CONFIG_BLK_DEV_IO_TRACE=y";
  75         echo "CONFIG_TRACEPOINTS=y";
  76         echo "CONFIG_KALLSYMS_ALL=y";
  77     } >> "${outdir}"/.config
  78
  79
  80     make "$oldconf_target" CC="$CC" ${koutput}
  81     make modules_prepare CC="$CC" ${koutput}
  82
  83     # Debug
  84     #cat "${outdir}"/.config
  85
  86     # Version specific tasks
  87     case "$kversion" in
  88       Ubuntu*)
  89         # Add Ubuntu ABI number to kernel headers, this is normally done by the packaging code
  90         ABINUM="$(echo "$kversion" | grep -P -o 'Ubuntu-(lts-)?.*-\K\d+(?=\..*)')"
  91         echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> "${outdir}"/include/generated/utsrelease.h
  92         ;;
  93     esac
  94
  95     # On powerpc this object is required to link modules
  96     if [ "${karch}" = "powerpc" ]; then
  97         make arch/powerpc/lib/crtsavres.o CC="$CC" ${koutput}
  98     fi
  99 }
 100
 101
 102
 103 build_modules() {
 104
 105     kdir="$1"
 106     bdir="$2"
 107
 108     # Get kernel version from source tree
 109     cd "${kdir}"
 110     kversion=$(make kernelversion)
 111
 112     # Enter lttng-modules source dir
 113     cd "${LTTSRCDIR}"
 114
 115     # kernels 3.10 to 3.10.13 and 3.11 to 3.11.2 introduce a deadlock in the
 116     # timekeeping subsystem. We want those build to fail.
 117     if { vergte "$kversion" "3.10" && verlte "$kversion" "3.10.13"; } || \
 118        { vergte "$kversion" "3.11" && verlte "$kversion" "3.11.2"; }; then
 119
 120         set +e
 121
 122         # Build modules
 123         KERNELDIR="${kdir}" make -j"${NPROC}" V=1 CC="$CC"
 124
 125         # We expect this build to fail, if it doesn't, fail the job.
 126         if [ "$?" -eq 0 ]; then
 127             echo "This build should have failed."
 128             exit 1
 129         fi
 130
 131         # We have to publish at least one file or the build will fail
 132         echo "This kernel is broken, there is a deadlock in the timekeeping subsystem." > "${bdir}/BROKEN.txt.ko"
 133
 134         set -e
 135
 136         KERNELDIR="${kdir}" make clean CC="$CC"
 137
 138     else # Regular build
 139
 140         # Build modules against full kernel sources
 141         KERNELDIR="${kdir}" make -j"${NPROC}" V=1 CC="$CC"
 142
 143         # Install modules to build dir
 144         KERNELDIR="${kdir}" make INSTALL_MOD_PATH="${bdir}" modules_install CC="$CC"
 145
 146         # Clean build dir
 147         KERNELDIR="${kdir}" make clean CC="$CC"
 148     fi
 149 }
 150
 151
 152 ## MAIN ##
 153
 154 # Use all CPU cores
 155 NPROC=$(nproc)
 156
 157 LTTSRCDIR="${WORKSPACE}/src/lttng-modules"
 158 LNXSRCDIR="${WORKSPACE}/src/linux"
 159
 160 LNXBUILDDIR="${WORKSPACE}/build/linux"
 161 LNXHDRDIR="${WORKSPACE}/build/linux-headers"
 162
 163 LTTBUILDKSRCDIR="${WORKSPACE}/build/lttng-modules-ksrc"
 164 LTTBUILDKHDRDIR="${WORKSPACE}/build/lttng-modules-khdr"
 165
 166
 167 # Setup cross compile env if available
 168 if [ "x${cross_arch:-}" != "x" ]; then
 169
 170     case "$cross_arch" in
 171         "armhf")
 172             karch="arm"
 173             cross_compile="arm-linux-gnueabihf-"
 174             vanilla_config="allyesconfig"
 175             ubuntu_config="armhf-config.flavour.generic"
 176             ;;
 177
 178         "arm64")
 179             karch="arm64"
 180             cross_compile="aarch64-linux-gnu-"
 181             vanilla_config="allyesconfig"
 182             ubuntu_config="arm64-config.flavour.generic"
 183             ;;
 184
 185         "powerpc")
 186             karch="powerpc"
 187             cross_compile="powerpc-linux-gnu-"
 188             vanilla_config="ppc44x_defconfig"
 189             ubuntu_config="powerpc-config.flavour.powerpc-smp"
 190             ;;
 191
 192         "ppc64el")
 193             karch="powerpc"
 194             cross_compile="powerpc64le-linux-gnu-"
 195             vanilla_config="pseries_le_defconfig"
 196             ubuntu_config="ppc64el-config.flavour.generic"
 197             ;;
 198
 199         *)
 200             echo "Unsupported cross arch $cross_arch"
 201             exit 1
 202             ;;
 203     esac
 204
 205     # Use default gcc when cross-compiling
 206     CC="${cross_compile}gcc"
 207
 208     # Export variables used by Kbuild for cross compilation
 209     export ARCH="${karch}"
 210     export CROSS_COMPILE="${cross_compile}"
 211
 212     oldconf_target="olddefconfig"
 213
 214 # Set arch specific values if we are not cross compiling
 215 elif [ "x${arch:-}" != "x" ]; then
 216
 217     case "$arch" in
 218         "x86-32")
 219             karch="x86"
 220             vanilla_config="allyesconfig"
 221             ubuntu_config="i386-config.flavour.generic"
 222             ;;
 223
 224         "x86-64")
 225             karch="x86"
 226             vanilla_config="allyesconfig"
 227             ubuntu_config="amd64-config.flavour.generic"
 228             ;;
 229
 230         "armhf")
 231             karch="arm"
 232             vanilla_config="allyesconfig"
 233             ubuntu_config="armhf-config.flavour.generic"
 234             ;;
 235
 236         "arm64")
 237             karch="arm64"
 238             vanilla_config="allyesconfig"
 239             ubuntu_config="arm64-config.flavour.generic"
 240             ;;
 241
 242         "powerpc")
 243             karch="powerpc"
 244             vanilla_config="allyesconfig"
 245             ubuntu_config="powerpc-config.flavour.powerpc-smp"
 246             ;;
 247
 248         "ppc64el")
 249             karch="powerpc"
 250             vanilla_config="allyesconfig"
 251             ubuntu_config="ppc64el-config.flavour.generic"
 252             ;;
 253
 254         *)
 255             echo "Unsupported arch $arch"
 256             exit 1
 257             ;;
 258     esac
 259
 260     # Use gcc 4.9, older kernel don't build with gcc 5
 261     CC=gcc-4.9
 262
 263     oldconf_target="silentoldconfig"
 264
 265 else
 266     echo "Not arch or cross_arch specified"
 267     exit 1
 268 fi
 269
 270
 271
 272
 273 # Create build directories
 274 mkdir -p "${LNXBUILDDIR}" "${LNXHDRDIR}" "${LTTBUILDKSRCDIR}" "${LTTBUILDKHDRDIR}"
 275
 276
 277
 278 ## PREPARE DISTRO STYLE KERNEL HEADERS / DEVEL
 279
 280 # Enter linux source dir
 281 cd "${LNXSRCDIR}"
 282
 283 prepare_lnx_sources "."
 284
 285 # For RT kernels, copy version file
 286 if [ -s localversion-rt ]; then
 287     cp -a localversion-rt "${LNXHDRDIR}"
 288 fi
 289
 290 # Copy all Makefile related stuff
 291 find . -path './include/*' -prune \
 292     -o -path './scripts/*' -prune -o -type f \
 293         \( -name 'Makefile*' -o -name 'Kconfig*' -o -name 'Kbuild*' -o \
 294         -name '*.sh' -o -name '*.pl' -o -name '*.lds' \) \
 295     -print | cpio -pd --preserve-modification-time "${LNXHDRDIR}"
 296
 297 # Copy base scripts and include dirs
 298 cp -a scripts include "${LNXHDRDIR}"
 299
 300 # Copy arch includes
 301 (find arch -name include -type d -print0 | \
 302     xargs -0 -n1 -i: find : -type f) | \
 303         cpio -pd --preserve-modification-time "${LNXHDRDIR}"
 304
 305 # Copy arch scripts
 306 (find arch -name scripts -type d -print0 | \
 307     xargs -0 -n1 -i: find : -type f) | \
 308         cpio -pd --preserve-modification-time "${LNXHDRDIR}"
 309
 310 # Cleanup scripts
 311 rm -f "${LNXHDRDIR}/scripts/*.o"
 312 rm -f "${LNXHDRDIR}/scripts/*/*.o"
 313
 314 # On powerpc this object is required to link modules
 315 if [ "${karch}" = "powerpc" ]; then
 316     cp -a --parents arch/powerpc/lib/crtsavres.[So] "${LNXHDRDIR}/"
 317 fi
 318
 319 # Copy modules related stuff, if available
 320 if [ -s Module.symvers ]; then
 321     cp Module.symvers "${LNXHDRDIR}"
 322 fi
 323
 324 if [ -s System.map ]; then
 325     cp System.map "${LNXHDRDIR}"
 326 fi
 327
 328 if [ -s Module.markers ]; then
 329     cp Module.markers "${LNXHDRDIR}"
 330 fi
 331
 332 # Copy config file
 333 cp .config "${LNXHDRDIR}"
 334
 335 # Make sure the Makefile and version.h have a matching timestamp so that
 336 # external modules can be built
 337 if [ -s "${LNXHDRDIR}/include/generated/uapi/linux/version.h" ]; then
 338     touch -r "${LNXHDRDIR}/Makefile" "${LNXHDRDIR}/include/generated/uapi/linux/version.h"
 339 elif [ -s "${LNXHDRDIR}/include/linux/version.h" ]; then
 340     touch -r "${LNXHDRDIR}/Makefile" "${LNXHDRDIR}/include/linux/version.h"
 341 else
 342     echo "Missing version.h"
 343     exit 1
 344 fi
 345 touch -r "${LNXHDRDIR}/.config" "${LNXHDRDIR}/include/generated/autoconf.h"
 346
 347 # Copy .config to include/config/auto.conf so "make prepare" is unnecessary.
 348 cp "${LNXHDRDIR}/.config" "${LNXHDRDIR}/include/config/auto.conf"
 349
 350
 351
 352
 353 ## PREPARE FULL LINUX SOURCE TREE
 354
 355 # Enter linux source dir
 356 cd "${LNXSRCDIR}"
 357
 358 # Make sure linux source dir is clean
 359 git clean -xdf
 360
 361 prepare_lnx_sources "${LNXBUILDDIR}"
 362
 363
 364 ## BUILD modules
 365
 366 # Build modules against full kernel sources
 367 build_modules "${LNXBUILDDIR}" "${LTTBUILDKSRCDIR}"
 368
 369 # Build modules against kernel headers
 370 build_modules "${LNXHDRDIR}" "${LTTBUILDKHDRDIR}"
 371
 372 # Make sure modules were built
 373 tree "${LTTBUILDKSRCDIR}"
 374 if [ "x$(find "${LTTBUILDKSRCDIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
 375   echo "No modules built!"
 376   exit 1
 377 fi
 378
 379 tree "${LTTBUILDKHDRDIR}"
 380 if [ "x$(find "${LTTBUILDKHDRDIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
 381   echo "No modules built!"
 382   exit 1
 383 fi
 384
 385 # EOF