3 # Copyright (C) 2016 - Michael Jeanson <mjeanson@efficios.com>
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.
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.
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/>.
20 # Kernel version compare functions
22 [ "$1" = "`printf '%s\n%s' $1 $2 | sort -V | head -n1`" ]
26 [ "$1" = "$2" ] && return 1 || verlte
$1 $2
30 [ "$1" = "`printf '%s\n%s' $1 $2 | sort -V | tail -n1`" ]
34 [ "$1" = "$2" ] && return 1 || vergte
$1 $2
38 prepare_lnx_sources
() {
42 if [ "$outdir" = "." ]; then
45 koutput
="O=\"${outdir}\""
48 # Generate kernel configuration
51 fakeroot debian
/rules clean
52 fakeroot debian
/rules genconfigs
53 cp CONFIGS
/${ubuntu_config} "${outdir}"/.config
57 make ${koutput} allyesconfig
62 sed -i "s/CONFIG_CC_STACKPROTECTOR_STRONG=y/# CONFIG_CC_STACKPROTECTOR_STRONG is not set/g" "${outdir}"/.config
64 # Don't try to sign modules
65 sed -i "s/CONFIG_MODULE_SIG=y/# CONFIG_MODULE_SIG is not set/g" "${outdir}"/.config
67 # Disable kernel stack frame correctness validation, introduced in 4.6.0 and currently fails
68 sed -i "s/CONFIG_STACK_VALIDATION=y/# CONFIG_STACK_VALIDATION is not set/g" "${outdir}"/.config
70 # Enable CONFIG_KALLSYMS_ALL
71 echo "CONFIG_KPROBES=y" >> "${outdir}"/.config
72 echo "CONFIG_FTRACE=y" >> "${outdir}"/.config
73 echo "CONFIG_BLK_DEV_IO_TRACE=y" >> "${outdir}"/.config
74 echo "CONFIG_TRACEPOINTS=y" >> "${outdir}"/.config
75 echo "CONFIG_KALLSYMS_ALL=y" >> "${outdir}"/.config
78 make ${koutput} silentoldconfig
79 make ${koutput} modules_prepare
81 # Version specific tasks
84 # Add Ubuntu ABI number to kernel headers, this is normally done by the packaging code
85 ABINUM
=$
(echo $kversion |
grep -P -o 'Ubuntu-(lts-)?.*-\K\d+(?=\..*)')
86 echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> ${outdir}/include
/generated
/utsrelease.h
90 # On powerpc this object is required to link modules
91 if [ "${karch}" = "powerpc" ]; then
92 make ${koutput} arch
/powerpc
/lib
/crtsavres.o
103 # Get kernel version from source tree
105 kversion
=$
(make kernelversion
)
107 # Enter lttng-modules source dir
110 # kernels 3.10 to 3.10.13 and 3.11 to 3.11.2 introduce a deadlock in the
111 # timekeeping subsystem. We want those build to fail.
112 if { vergte
"$kversion" "3.10" && verlte
"$kversion" "3.10.13"; } || \
113 { vergte
"$kversion" "3.11" && verlte
"$kversion" "3.11.2"; }; then
118 KERNELDIR
="${kdir}" make -j${NPROC} V
=1
120 # We expect this build to fail, if it doesn't, fail the job.
121 if [ "$?" -eq 0 ]; then
125 # We have to publish at least one file or the build will fail
126 echo "This kernel is broken, there is a deadlock in the timekeeping subsystem." > "${bdir}/BROKEN.txt.ko"
130 KERNELDIR
="${kdir}" make clean
134 # Build modules against full kernel sources
135 KERNELDIR
="${kdir}" make -j${NPROC} V
=1
137 # Install modules to build dir
138 KERNELDIR
="${kdir}" make INSTALL_MOD_PATH
="${bdir}" modules_install
141 KERNELDIR
="${kdir}" make clean
151 LTTSRCDIR
="${WORKSPACE}/src/lttng-modules"
152 LNXSRCDIR
="${WORKSPACE}/src/linux"
154 LNXBUILDDIR
="${WORKSPACE}/build/linux"
155 LNXHDRDIR
="${WORKSPACE}/build/linux-headers"
157 LTTBUILDKSRCDIR
="${WORKSPACE}/build/lttng-modules-ksrc"
158 LTTBUILDKHDRDIR
="${WORKSPACE}/build/lttng-modules-khdr"
161 # Setup cross compile env if available
162 if [ "x${cross_arch:-}" != "x" ]; then
164 case "$cross_arch" in
167 cross_compile
="arm-linux-gnueabihf-"
168 ubuntu_config
="armhf-config.flavour.generic"
173 cross_compile
="aarch64-linux-gnu-"
174 ubuntu_config
="arm64-config.flavour.generic"
179 cross_compile
="powerpc-linux-gnu-"
180 ubuntu_config
="powerpc-config.flavour.powerpc-smp"
185 cross_compile
="powerpc64le-linux-gnu-"
186 ubuntu_config
="ppc64el-config.flavour.generic"
190 echo "Unsupported cross arch $arch"
195 # Export variables used by Kbuild for cross compilation
196 export ARCH
="${karch}"
197 export CROSS_COMPILE
="${cross_compile}"
200 # Set arch specific values if we are not cross compiling
201 elif [ "x${arch:-}" != "x" ]; then
205 ubuntu_config
="i386-config.flavour.generic"
210 ubuntu_config
="amd64-config.flavour.generic"
215 ubuntu_config
="armhf-config.flavour.generic"
220 ubuntu_config
="arm64-config.flavour.generic"
225 ubuntu_config
="powerpc-config.flavour.powerpc-smp"
230 ubuntu_config
="ppc64el-config.flavour.generic"
234 echo "Unsupported arch $arch"
239 echo "Not arch or cross_arch specified"
246 # Create build directories
247 mkdir
-p "${LNXBUILDDIR}" "${LNXHDRDIR}" "${LTTBUILDKSRCDIR}" "${LTTBUILDKHDRDIR}"
251 ## PREPARE DISTRO STYLE KERNEL HEADERS / DEVEL
253 # Enter linux source dir
256 prepare_lnx_sources
"."
258 # For RT kernels, copy version file
259 if [ -s localversion-rt
]; then
260 cp -a localversion-rt
"${LNXHDRDIR}"
263 # Copy all Makefile related stuff
264 find .
-path './include/*' -prune \
265 -o -path './scripts/*' -prune -o -type f \
266 \
( -name 'Makefile*' -o -name 'Kconfig*' -o -name 'Kbuild*' -o \
267 -name '*.sh' -o -name '*.pl' -o -name '*.lds' \
) \
268 -print |
cpio -pd --preserve-modification-time "${LNXHDRDIR}"
270 # Copy base scripts and include dirs
271 cp -a scripts include
"${LNXHDRDIR}"
274 (find arch
-name include
-type d
-print | \
275 xargs -n1 -i: find : -type f
) | \
276 cpio -pd --preserve-modification-time "${LNXHDRDIR}"
279 (find arch
-name scripts
-type d
-print | \
280 xargs -n1 -i: find : -type f
) | \
281 cpio -pd --preserve-modification-time "${LNXHDRDIR}"
284 rm -f "${LNXHDRDIR}/scripts/*.o"
285 rm -f "${LNXHDRDIR}/scripts/*/*.o"
287 # On powerpc this object is required to link modules
288 if [ "${karch}" = "powerpc" ]; then
289 cp -a --parents arch
/powerpc
/lib
/crtsavres.
[So
] "${LNXHDRDIR}/"
292 # Copy modules related stuff, if available
293 if [ -s Module.symvers
]; then
294 cp Module.symvers
"${LNXHDRDIR}"
297 if [ -s System.map
]; then
298 cp System.map
"${LNXHDRDIR}"
301 if [ -s Module.markers
]; then
302 cp Module.markers
"${LNXHDRDIR}"
306 cp .config
"${LNXHDRDIR}"
308 # Make sure the Makefile and version.h have a matching timestamp so that
309 # external modules can be built
310 if [ -s "${LNXHDRDIR}/include/generated/uapi/linux/version.h" ]; then
311 touch -r "${LNXHDRDIR}/Makefile" "${LNXHDRDIR}/include/generated/uapi/linux/version.h"
312 elif [ -s "${LNXHDRDIR}/include/linux/version.h" ]; then
313 touch -r "${LNXHDRDIR}/Makefile" "${LNXHDRDIR}/include/linux/version.h"
315 echo "Missing version.h"
318 touch -r "${LNXHDRDIR}/.config" "${LNXHDRDIR}/include/generated/autoconf.h"
320 # Copy .config to include/config/auto.conf so "make prepare" is unnecessary.
321 cp "${LNXHDRDIR}/.config" "${LNXHDRDIR}/include/config/auto.conf"
326 ## PREPARE FULL LINUX SOURCE TREE
328 # Enter linux source dir
331 # Make sure linux source dir is clean
334 prepare_lnx_sources
"${LNXBUILDDIR}"
339 # Build modules against full kernel sources
340 build_modules
"${LNXBUILDDIR}" "${LTTBUILDKSRCDIR}"
342 # Build modules against kernel headers
343 build_modules
"${LNXHDRDIR}" "${LTTBUILDKHDRDIR}"
345 # Make sure modules were built
346 tree
"${LTTBUILDKSRCDIR}"
347 if [ "x$(find "${LTTBUILDKSRCDIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
348 echo "No modules built!"
352 tree
"${LTTBUILDKHDRDIR}"
353 if [ "x$(find "${LTTBUILDKHDRDIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
354 echo "No modules built!"
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