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 ${koutput} allyesconfig CC
=$CC
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 ${koutput} silentoldconfig CC
=$CC
79 make ${koutput} modules_prepare CC
=$CC
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 ${koutput} arch
/powerpc
/lib
/crtsavres.o CC
=$CC
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 CC
=$CC
120 # We expect this build to fail, if it doesn't, fail the job.
121 if [ "$?" -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 CC
=$CC
134 # Build modules against full kernel sources
135 KERNELDIR
="${kdir}" make -j${NPROC} V
=1 CC
=$CC
137 # Install modules to build dir
138 KERNELDIR
="${kdir}" make INSTALL_MOD_PATH
="${bdir}" modules_install CC
=$CC
141 KERNELDIR
="${kdir}" make clean CC
=$CC
148 # Use gcc 4.9, older kernel don't build with gcc 5
154 LTTSRCDIR
="${WORKSPACE}/src/lttng-modules"
155 LNXSRCDIR
="${WORKSPACE}/src/linux"
157 LNXBUILDDIR
="${WORKSPACE}/build/linux"
158 LNXHDRDIR
="${WORKSPACE}/build/linux-headers"
160 LTTBUILDKSRCDIR
="${WORKSPACE}/build/lttng-modules-ksrc"
161 LTTBUILDKHDRDIR
="${WORKSPACE}/build/lttng-modules-khdr"
164 # Setup cross compile env if available
165 if [ "x${cross_arch:-}" != "x" ]; then
167 case "$cross_arch" in
170 cross_compile
="arm-linux-gnueabihf-"
171 ubuntu_config
="armhf-config.flavour.generic"
176 cross_compile
="aarch64-linux-gnu-"
177 ubuntu_config
="arm64-config.flavour.generic"
182 cross_compile
="powerpc-linux-gnu-"
183 ubuntu_config
="powerpc-config.flavour.powerpc-smp"
188 cross_compile
="powerpc64le-linux-gnu-"
189 ubuntu_config
="ppc64el-config.flavour.generic"
193 echo "Unsupported cross arch $arch"
198 # Export variables used by Kbuild for cross compilation
199 export ARCH
="${karch}"
200 export CROSS_COMPILE
="${cross_compile}"
203 # Set arch specific values if we are not cross compiling
204 elif [ "x${arch:-}" != "x" ]; then
208 ubuntu_config
="i386-config.flavour.generic"
213 ubuntu_config
="amd64-config.flavour.generic"
218 ubuntu_config
="armhf-config.flavour.generic"
223 ubuntu_config
="arm64-config.flavour.generic"
228 ubuntu_config
="powerpc-config.flavour.powerpc-smp"
233 ubuntu_config
="ppc64el-config.flavour.generic"
237 echo "Unsupported arch $arch"
242 echo "Not arch or cross_arch specified"
249 # Create build directories
250 mkdir
-p "${LNXBUILDDIR}" "${LNXHDRDIR}" "${LTTBUILDKSRCDIR}" "${LTTBUILDKHDRDIR}"
254 ## PREPARE DISTRO STYLE KERNEL HEADERS / DEVEL
256 # Enter linux source dir
259 prepare_lnx_sources
"."
261 # For RT kernels, copy version file
262 if [ -s localversion-rt
]; then
263 cp -a localversion-rt
"${LNXHDRDIR}"
266 # Copy all Makefile related stuff
267 find .
-path './include/*' -prune \
268 -o -path './scripts/*' -prune -o -type f \
269 \
( -name 'Makefile*' -o -name 'Kconfig*' -o -name 'Kbuild*' -o \
270 -name '*.sh' -o -name '*.pl' -o -name '*.lds' \
) \
271 -print |
cpio -pd --preserve-modification-time "${LNXHDRDIR}"
273 # Copy base scripts and include dirs
274 cp -a scripts include
"${LNXHDRDIR}"
277 (find arch
-name include
-type d
-print | \
278 xargs -n1 -i: find : -type f
) | \
279 cpio -pd --preserve-modification-time "${LNXHDRDIR}"
282 (find arch
-name scripts
-type d
-print | \
283 xargs -n1 -i: find : -type f
) | \
284 cpio -pd --preserve-modification-time "${LNXHDRDIR}"
287 rm -f "${LNXHDRDIR}/scripts/*.o"
288 rm -f "${LNXHDRDIR}/scripts/*/*.o"
290 # On powerpc this object is required to link modules
291 if [ "${karch}" = "powerpc" ]; then
292 cp -a --parents arch
/powerpc
/lib
/crtsavres.
[So
] "${LNXHDRDIR}/"
295 # Copy modules related stuff, if available
296 if [ -s Module.symvers
]; then
297 cp Module.symvers
"${LNXHDRDIR}"
300 if [ -s System.map
]; then
301 cp System.map
"${LNXHDRDIR}"
304 if [ -s Module.markers
]; then
305 cp Module.markers
"${LNXHDRDIR}"
309 cp .config
"${LNXHDRDIR}"
311 # Make sure the Makefile and version.h have a matching timestamp so that
312 # external modules can be built
313 if [ -s "${LNXHDRDIR}/include/generated/uapi/linux/version.h" ]; then
314 touch -r "${LNXHDRDIR}/Makefile" "${LNXHDRDIR}/include/generated/uapi/linux/version.h"
315 elif [ -s "${LNXHDRDIR}/include/linux/version.h" ]; then
316 touch -r "${LNXHDRDIR}/Makefile" "${LNXHDRDIR}/include/linux/version.h"
318 echo "Missing version.h"
321 touch -r "${LNXHDRDIR}/.config" "${LNXHDRDIR}/include/generated/autoconf.h"
323 # Copy .config to include/config/auto.conf so "make prepare" is unnecessary.
324 cp "${LNXHDRDIR}/.config" "${LNXHDRDIR}/include/config/auto.conf"
329 ## PREPARE FULL LINUX SOURCE TREE
331 # Enter linux source dir
334 # Make sure linux source dir is clean
337 prepare_lnx_sources
"${LNXBUILDDIR}"
342 # Build modules against full kernel sources
343 build_modules
"${LNXBUILDDIR}" "${LTTBUILDKSRCDIR}"
345 # Build modules against kernel headers
346 build_modules
"${LNXHDRDIR}" "${LTTBUILDKHDRDIR}"
348 # Make sure modules were built
349 tree
"${LTTBUILDKSRCDIR}"
350 if [ "x$(find "${LTTBUILDKSRCDIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
351 echo "No modules built!"
355 tree
"${LTTBUILDKHDRDIR}"
356 if [ "x$(find "${LTTBUILDKHDRDIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
357 echo "No modules built!"
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