3 # Copyright (C) 2016-2019 - 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 cross_arch
=${cross_arch:-}
22 kgitrepo
=${kgitrepo:-}
23 mversion
=${mversion:-}
24 mgitrepo
=${mgitrepo:-}
29 # Kernel version compare functions
31 [ "$1" = "$(printf '%s\n%s' "$1" "$2" | sort -V | head -n1)" ]
35 [ "$1" = "$2" ] && return 1 || verlte
"$1" "$2"
39 [ "$1" = "$(printf '%s\n%s' "$1" "$2" | sort -V | tail -n1)" ]
43 [ "$1" = "$2" ] && return 1 || vergte
"$1" "$2"
47 git_clone_modules_sources
() {
48 mkdir
-p "$MODULES_GIT_DIR"
49 git clone
--depth=1 -b "${mversion}" "${mgitrepo}" "$MODULES_GIT_DIR"
52 # Checkout a shallow kernel tree of the specified tag
53 git_clone_linux_sources
() {
54 mkdir
-p "$LINUX_GIT_DIR"
55 git clone
--depth=1 -b "${ktag}" --reference "$LINUX_GIT_REF_REPO_DIR" "${kgitrepo}" "$LINUX_GIT_DIR"
59 # Export the kernel sources from the git repo
60 git_export_linux_sources
() {
62 git archive
"${ktag}" |
tar -x -C "$LINUX_SRCOBJ_DIR"
66 # Upload the tar archive to the object store
67 upload_archive_obj
() {
68 s3cmd
-c "$WORKSPACE/.s3cfg" put
"$WORKSPACE/$obj_name" "$obj_url_prefix/"
69 rm -f "$WORKSPACE/$obj_name"
73 extract_archive_obj
() {
74 tar -xf "$WORKSPACE/$obj_name" -C "$LINUX_OBJ_DIR"
75 rm -f "$WORKSPACE/$obj_name"
81 tar -cf "$WORKSPACE/$obj_name" -I pbzip2 .
85 # Find the most recent GCC version supported by the kernel sources
89 cd "$LINUX_SRCOBJ_DIR"
91 kversion
=$
(make -s kernelversion
)
95 for cc
in gcc-5 gcc-4.8
; do
96 if "${CROSS_COMPILE:-}${cc}" -I include
/ -D__LINUX_COMPILER_H -D__LINUX_COMPILER_TYPES_H -E include
/linux
/compiler-gcc.h
; then
104 if [ "x$selected_cc" = "x" ]; then
105 echo "Found no suitable compiler."
109 # Force gcc-4.8 for kernels before 3.18
110 if { verlt
"$kversion" "3.18"; }; then
114 if [ "$selected_cc" != "gcc-4.8" ]; then
115 # Older kernel Makefiles do not expect the compiler to default to PIE
117 KCFLAGS
="-fno-pie -no-pie -fno-stack-protector"
119 export KAFLAGS KCFLAGS KCPPFLAGS
122 export CC
="${CROSS_COMPILE:-}${selected_cc}"
123 export HOSTCC
="${selected_cc}"
129 build_linux_kernel
() {
130 cd "$LINUX_SRCOBJ_DIR"
132 kversion
=$
(make -s kernelversion
)
134 # Generate kernel configuration
137 if [ "${cross_arch}" = "powerpc" ]; then
138 if vergte
"${kversion}" "4.10"; then
139 echo "Ubuntu removed big endian powerpc configuration from kernel >= 4.10. Don't try to build it."
143 fakeroot debian
/rules clean KW_DEFCONFIG_DIR
=.
144 fakeroot debian
/rules genconfigs KW_DEFCONFIG_DIR
=.
145 cp CONFIGS
/"${ubuntu_config}" .config
149 # Force 32bit build on i386, default is 64bit
150 if [ "$arch" = "i386" ]; then
154 # allyesconfig is mostly broken for kernels of the 2.6 series
155 if verlt
"$kversion" "3.0"; then
156 vanilla_config
="defconfig"
159 make "${vanilla_config}"
163 # silentoldconfig was renamed in 4.19
164 if vergte
"$kversion" "4.19"; then
165 update_conf_target
="syncconfig"
167 update_conf_target
="silentoldconfig"
170 # Fix 'defined(@array)' was removed from recent perl
171 if [ -f "kernel/timeconst.pl" ]; then
172 sed -i 's/defined(\@\(.*\))/@\1/' kernel
/timeconst.pl
175 # Fix syntax of inline assembly which is confused with C++11 raw strings on gcc >= 5
176 if [ "$CC" != "gcc-4.8" ]; then
177 if [ -f "arch/x86/kvm/svm.c" ]; then
178 sed -i 's/ R"/ R "/g; s/"R"/" R "/g' arch
/x86
/kvm
/svm.c
181 if [ -f "arch/x86/kvm/vmx.c" ]; then
182 sed -i 's/ R"/ R "/g; s/"R"/" R "/g' arch
/x86
/kvm
/vmx.c
186 # Fix a typo in v2.6.36.x
187 if [ -f "arch/x86/kernel/entry_64.S" ]; then
188 sed -i 's/END(do_hypervisor_callback)/END(xen_do_hypervisor_callback)/' arch
/x86
/kernel
/entry_64.S
191 # Fix kernel < 3.0 with gcc >= 4.7
192 if verlt
"$kversion" "3.0"; then
193 sed -i '/linux\/compiler.h/a #include <linux\/linkage.h> \/* For asmregparm *\/' arch
/x86
/include
/asm
/ptrace.h
194 sed -i 's/extern long syscall_trace_enter/extern asmregparm long syscall_trace_enter/' arch
/x86
/include
/asm
/ptrace.h
195 sed -i 's/extern void syscall_trace_leave/extern asmregparm void syscall_trace_leave/' arch
/x86
/include
/asm
/ptrace.h
196 echo "header-y += linkage.h" >> include
/linux
/Kbuild
200 sed -i "s/CONFIG_CC_STACKPROTECTOR_STRONG=y/# CONFIG_CC_STACKPROTECTOR_STRONG is not set/g" .config
202 # Don't try to sign modules
203 sed -i "s/CONFIG_MODULE_SIG=y/# CONFIG_MODULE_SIG is not set/g" .config
205 # Disable kernel stack frame correctness validation, introduced in 4.6.0 and currently fails
206 sed -i "s/CONFIG_STACK_VALIDATION=y/# CONFIG_STACK_VALIDATION is not set/g" .config
208 # Cause problems with inline assembly on i386
209 sed -i "s/CONFIG_DEBUG_SECTION_MISMATCH=y/# CONFIG_DEBUG_SECTION_MISMATCH is not set/g" .config
211 # Don't build samples, they are broken on some kernel releases
212 sed -i "s/CONFIG_SAMPLES=y/# CONFIG_SAMPLES is not set/g" .config
213 sed -i "s/CONFIG_BUILD_DOCSRC=y/# CONFIG_BUILD_DOCSRC is not set/g" .config
216 sed -i "s/CONFIG_KCOV=y/# CONFIG_KCOV is not set/g" .config
218 # Broken on some RT kernels
219 sed -i "s/CONFIG_HYPERV=y/# CONFIG_HYPERV is not set/g" .config
222 sed -i "s/CONFIG_RAPIDIO_TSI721=y/# CONFIG_RAPIDIO_TSI721 is not set/g" .config
223 sed -i "s/CONFIG_SGI_XP=y/# CONFIG_SGI_XP is not set/g" .config
224 sed -i "s/CONFIG_MFD_WM8994=y/# CONFIG_MFD_WM8994 is not set/g" .config
225 sed -i "s/CONFIG_DRM_RADEON=y/# CONFIG_DRM_RADEON is not set/g" .config
226 sed -i "s/CONFIG_SND_SOC_WM5100=y/# CONFIG_SND_SOC_WM5100 is not set/g" .config
228 # IGBVF won't build with recent gcc on 2.6.38.x
229 if { vergte
"$kversion" "2.6.37" && verlt
"$kversion" "2.6.38"; }; then
230 sed -i "s/CONFIG_IGBVF=y/# CONFIG_IGBVF is not set/g" .config
233 # Set required options
234 sed -i 's/# CONFIG_KPROBES is not set/CONFIG_KPROBES=y/g' .config
235 sed -i 's/# CONFIG_FTRACE is not set/CONFIG_FTRACE=y/g' .config
236 sed -i 's/# CONFIG_BLK_DEV_IO_TRACE is not set/CONFIG_BLK_DEV_IO_TRACE=y/g' .config
237 sed -i 's/# CONFIG_KALLSYMS_ALL is not set/CONFIG_KALLSYMS_ALL=y/g' .config
242 make "$update_conf_target" CC
="$CC"
243 make -j"$NPROC" CC
="$CC"
245 krelease
=$
(make -s kernelrelease CC
="$CC")
247 # Save the kernel and modules
248 mkdir
-p "$LINUX_INSTOBJ_DIR/boot"
249 make INSTALL_MOD_PATH
="$LINUX_INSTOBJ_DIR" INSTALL_MOD_STRIP
=1 modules_install
250 make INSTALL_PATH
="$LINUX_INSTOBJ_DIR/boot" install
251 rm -f "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source" "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/build"
252 ln -s ..
/..
/..
/..
/sources
"$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source"
253 ln -s ..
/..
/..
/..
/sources
"$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source"
257 extract_distro_headers
() {
259 # Enter linux source dir
260 cd "${LINUX_SRCOBJ_DIR}"
263 # For RT kernels, copy version file
264 if [ -s localversion-rt
]; then
265 cp -a localversion-rt
"${LINUX_HDROBJ_DIR}"
268 # Copy all Makefile related stuff
269 find .
-path './include/*' -prune \
270 -o -path './scripts/*' -prune -o -type f \
271 \
( -name 'Makefile*' -o -name 'Kconfig*' -o -name 'Kbuild*' -o \
272 -name '*.sh' -o -name '*.pl' -o -name '*.lds' \
) \
273 -print |
cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
275 # Copy base scripts and include dirs
276 cp -a scripts include
"${LINUX_HDROBJ_DIR}"
279 (find arch
-name include
-type d
-print0 | \
280 xargs -0 -n1 -i: find : -type f
) | \
281 cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
284 (find arch
-name scripts
-type d
-print0 | \
285 xargs -0 -n1 -i: find : -type f
) | \
286 cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
289 rm -f "${LINUX_HDROBJ_DIR}/scripts/*.o"
290 rm -f "${LINUX_HDROBJ_DIR}/scripts/*/*.o"
292 # On powerpc this object is required to link modules
293 if [ "${karch}" = "powerpc" ]; then
294 cp -a --parents arch
/powerpc
/lib
/crtsavres.
[So
] "${LINUX_HDROBJ_DIR}/"
297 # On arm64 between 4.13 and 1.15 this object is required to build with ftrace support
298 if [ "${karch}" = "arm64" ]; then
299 if [ -f "arch/arm64/kernel/ftrace-mod.S" ]; then
300 cp -a --parents arch
/arm64
/kernel
/ftrace-mod.
[So
] "${LINUX_HDROBJ_DIR}/"
304 # Newer kernels need objtool to build modules when CONFIG_STACK_VALIDATION=y
305 if [ -f tools
/objtool
/objtool
]; then
306 cp -a --parents tools
/objtool
/objtool
"${LINUX_HDROBJ_DIR}/"
309 if [ -f "arch/x86/kernel/macros.s" ]; then
310 cp -a --parents arch
/x86
/kernel
/macros.s
"${LINUX_HDROBJ_DIR}/"
313 # Copy modules related stuff, if available
314 if [ -s Module.symvers
]; then
315 cp Module.symvers
"${LINUX_HDROBJ_DIR}"
318 if [ -s System.map
]; then
319 cp System.map
"${LINUX_HDROBJ_DIR}"
322 if [ -s Module.markers
]; then
323 cp Module.markers
"${LINUX_HDROBJ_DIR}"
327 cp .config
"${LINUX_HDROBJ_DIR}"
329 # Make sure the Makefile and version.h have a matching timestamp so that
330 # external modules can be built
331 if [ -s "${LINUX_HDROBJ_DIR}/include/generated/uapi/linux/version.h" ]; then
332 touch -r "${LINUX_HDROBJ_DIR}/Makefile" "${LINUX_HDROBJ_DIR}/include/generated/uapi/linux/version.h"
333 elif [ -s "${LINUX_HDROBJ_DIR}/include/linux/version.h" ]; then
334 touch -r "${LINUX_HDROBJ_DIR}/Makefile" "${LINUX_HDROBJ_DIR}/include/linux/version.h"
336 echo "Missing version.h"
339 touch -r "${LINUX_HDROBJ_DIR}/.config" "${LINUX_HDROBJ_DIR}/include/generated/autoconf.h"
341 # Copy .config to include/config/auto.conf so "make prepare" is unnecessary.
342 cp "${LINUX_HDROBJ_DIR}/.config" "${LINUX_HDROBJ_DIR}/include/config/auto.conf"
344 # Finally clean the object files from the full source tree
347 # And regen the modules support files
348 make modules_prepare CC
="$CC"
350 # On powerpc this object is required to link modules
351 if [ "${karch}" = "powerpc" ]; then
352 make arch
/powerpc
/lib
/crtsavres.o CC
="$CC"
355 # On arm64 between 4.13 and 4.15 this object is required to build with ftrace support
356 if [ "${karch}" = "arm64" ]; then
357 if [ -f "arch/arm64/kernel/ftrace-mod.S" ]; then
358 make arch
/arm64
/kernel
/ftrace-mod.o CC
="$CC"
362 # Version specific tasks
365 # Add Ubuntu ABI number to kernel headers, this is normally done by the packaging code
366 ABINUM
="$(echo "$ktag" | grep -P -o 'Ubuntu-(lts-)?.*-\K\d+(?=\..*)')"
367 echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> include
/generated
/utsrelease.h
368 echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> "${LINUX_HDROBJ_DIR}/include/generated/utsrelease.h"
380 kversion
=$
(make -C "$LINUX_HDROBJ_DIR" -s kernelversion
)
382 # Enter lttng-modules source dir
383 cd "${MODULES_GIT_DIR}"
385 # kernels 3.10 to 3.10.13 and 3.11 to 3.11.2 introduce a deadlock in the
386 # timekeeping subsystem. We want those build to fail.
387 if { vergte
"$kversion" "3.10" && verlte
"$kversion" "3.10.13"; } || \
388 { vergte
"$kversion" "3.11" && verlte
"$kversion" "3.11.2"; }; then
393 KERNELDIR
="${kdir}" make -j"${NPROC}" V
=1 CC
="$CC"
398 # We expect this build to fail, if it doesn't, fail the job.
399 if [ "$ret" -eq 0 ]; then
400 echo "This build should have failed."
404 # We have to publish at least one file or the build will fail
405 echo "This kernel is broken, there is a deadlock in the timekeeping subsystem." > "${outdir}/BROKEN.txt.ko"
407 KERNELDIR
="${kdir}" make clean
411 # Build modules against full kernel sources
412 KERNELDIR
="${kdir}" make -j"${NPROC}" V
=1 CC
="$CC"
414 # Install modules to build dir
415 KERNELDIR
="${kdir}" make INSTALL_MOD_PATH
="${outdir}" modules_install
418 KERNELDIR
="${kdir}" make clean
428 MODULES_GIT_DIR
="${WORKSPACE}/src/lttng-modules"
429 LINUX_GIT_DIR
="${WORKSPACE}/src/linux"
431 LINUX_OBJ_DIR
="${WORKSPACE}/linux"
432 LINUX_SRCOBJ_DIR
="${LINUX_OBJ_DIR}/sources"
433 LINUX_HDROBJ_DIR
="${LINUX_OBJ_DIR}/headers"
434 LINUX_INSTOBJ_DIR
="${LINUX_OBJ_DIR}/install"
436 MODULES_OUTPUT_KSRC_DIR
="${WORKSPACE}/build/lttng-modules-ksrc"
437 MODULES_OUTPUT_KHDR_DIR
="${WORKSPACE}/build/lttng-modules-khdr"
439 LINUX_GIT_REF_REPO_DIR
="$HOME/gitcache/linux-stable.git/"
441 OBJ_STORE_URL
="s3://jenkins"
445 # Create build directories
446 mkdir
-p "${LINUX_SRCOBJ_DIR}" "${LINUX_HDROBJ_DIR}" "${LINUX_INSTOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}" "${MODULES_OUTPUT_KHDR_DIR}"
448 git_clone_modules_sources
450 # Setup cross compile env if available
451 if [ "x${cross_arch}" != "x" ]; then
453 case "$cross_arch" in
456 cross_compile
="arm-linux-gnueabihf-"
457 vanilla_config
="allyesconfig"
458 ubuntu_config
="armhf-config.flavour.generic"
463 cross_compile
="aarch64-linux-gnu-"
464 vanilla_config
="allyesconfig"
465 ubuntu_config
="arm64-config.flavour.generic"
470 cross_compile
="powerpc-linux-gnu-"
471 vanilla_config
="ppc44x_defconfig"
472 ubuntu_config
="powerpc-config.flavour.powerpc-smp"
477 cross_compile
="powerpc64le-linux-gnu-"
478 vanilla_config
="pseries_le_defconfig"
479 ubuntu_config
="ppc64el-config.flavour.generic"
483 echo "Unsupported cross arch $cross_arch"
488 # Export variables used by Kbuild for cross compilation
489 export ARCH
="${karch}"
490 export CROSS_COMPILE
="${cross_compile}"
492 # Set arch specific values if we are not cross compiling
493 elif [ "x${arch}" != "x" ]; then
498 vanilla_config
="allyesconfig"
499 ubuntu_config
="i386-config.flavour.generic"
504 vanilla_config
="allyesconfig"
505 ubuntu_config
="amd64-config.flavour.generic"
510 vanilla_config
="allyesconfig"
511 ubuntu_config
="armhf-config.flavour.generic"
516 vanilla_config
="allyesconfig"
517 ubuntu_config
="arm64-config.flavour.generic"
522 vanilla_config
="allyesconfig"
523 ubuntu_config
="powerpc-config.flavour.powerpc-smp"
528 vanilla_config
="allyesconfig"
529 ubuntu_config
="ppc64el-config.flavour.generic"
533 echo "Unsupported arch $arch"
538 echo "Not arch or cross_arch specified"
544 # First get the kernel build from the object store, or build it, if it's
547 echo "# Setup endpoint
548 host_base = obj.internal.efficios.com
549 host_bucket = obj.internal.efficios.com
550 bucket_location = us-east-1
555 secret_key = echo123456
557 # Enable S3 v4 signature APIs
558 signature_v2 = False" > "$WORKSPACE/.s3cfg"
560 url_hash
="$(echo -n "$kgitrepo" | md5sum | awk '{ print $1 }')"
561 obj_name
="linux.tar.bz2"
562 obj_url_prefix
="$OBJ_STORE_URL/linux-build/$url_hash/$ktag/$arch/${cross_arch:-native}"
563 obj_url
="$obj_url_prefix/$obj_name"
566 s3cmd
-c "$WORKSPACE/.s3cfg" get
"$obj_url"
576 echo "File not found"
578 # Build all the things and upload
579 # then finish the module build...
581 git_clone_linux_sources
582 git_export_linux_sources
586 ## PREPARE FULL LINUX SOURCE TREE
589 ## EXTRACT DISTRO STYLE KERNEL HEADERS / DEVEL
590 extract_distro_headers
599 echo "Unknown error? Abort"
607 # Either we downloaded a pre-build kernel or we built it and uploaded
608 # the archive for future builds.
612 # Build modules against full kernel sources
613 build_modules
"${LINUX_SRCOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}"
615 # Build modules against kernel headers
616 build_modules
"${LINUX_HDROBJ_DIR}" "${MODULES_OUTPUT_KHDR_DIR}"
618 # Make sure some modules were actually built
619 tree
"${MODULES_OUTPUT_KSRC_DIR}"
620 if [ "x$(find "${MODULES_OUTPUT_KSRC_DIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
621 echo "No modules built!"
625 tree
"${MODULES_OUTPUT_KHDR_DIR}"
626 if [ "x$(find "${MODULES_OUTPUT_KHDR_DIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
627 echo "No modules built!"