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
221 # IGBVF won't build with recent gcc on 2.6.38.x
222 if { vergte
"$kversion" "2.6.37" && verlt
"$kversion" "2.6.38"; }; then
223 sed -i "s/CONFIG_IGBVF=y/# CONFIG_IGBVF is not set/g" .config
226 # Set required options
227 sed -i 's/# CONFIG_KPROBES is not set/CONFIG_KPROBES=y/g' .config
228 sed -i 's/# CONFIG_FTRACE is not set/CONFIG_FTRACE=y/g' .config
229 sed -i 's/# CONFIG_BLK_DEV_IO_TRACE is not set/CONFIG_BLK_DEV_IO_TRACE=y/g' .config
230 sed -i 's/# CONFIG_KALLSYMS_ALL is not set/CONFIG_KALLSYMS_ALL=y/g' .config
235 make "$update_conf_target" CC
="$CC"
236 make -j"$NPROC" CC
="$CC"
238 krelease
=$
(make -s kernelrelease CC
="$CC")
240 # Save the kernel and modules
241 mkdir
-p "$LINUX_INSTOBJ_DIR/boot"
242 make INSTALL_MOD_PATH
="$LINUX_INSTOBJ_DIR" INSTALL_MOD_STRIP
=1 modules_install
243 make INSTALL_PATH
="$LINUX_INSTOBJ_DIR/boot" install
244 rm -f "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source" "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/build"
245 ln -s ..
/..
/..
/..
/sources
"$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source"
246 ln -s ..
/..
/..
/..
/sources
"$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source"
250 extract_distro_headers
() {
252 # Enter linux source dir
253 cd "${LINUX_SRCOBJ_DIR}"
256 # For RT kernels, copy version file
257 if [ -s localversion-rt
]; then
258 cp -a localversion-rt
"${LINUX_HDROBJ_DIR}"
261 # Copy all Makefile related stuff
262 find .
-path './include/*' -prune \
263 -o -path './scripts/*' -prune -o -type f \
264 \
( -name 'Makefile*' -o -name 'Kconfig*' -o -name 'Kbuild*' -o \
265 -name '*.sh' -o -name '*.pl' -o -name '*.lds' \
) \
266 -print |
cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
268 # Copy base scripts and include dirs
269 cp -a scripts include
"${LINUX_HDROBJ_DIR}"
272 (find arch
-name include
-type d
-print0 | \
273 xargs -0 -n1 -i: find : -type f
) | \
274 cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
277 (find arch
-name scripts
-type d
-print0 | \
278 xargs -0 -n1 -i: find : -type f
) | \
279 cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
282 rm -f "${LINUX_HDROBJ_DIR}/scripts/*.o"
283 rm -f "${LINUX_HDROBJ_DIR}/scripts/*/*.o"
285 # On powerpc this object is required to link modules
286 if [ "${karch}" = "powerpc" ]; then
287 cp -a --parents arch
/powerpc
/lib
/crtsavres.
[So
] "${LINUX_HDROBJ_DIR}/"
290 # On arm64 between 4.13 and 1.15 this object is required to build with ftrace support
291 if [ "${karch}" = "arm64" ]; then
292 if [ -f "arch/arm64/kernel/ftrace-mod.S" ]; then
293 cp -a --parents arch
/arm64
/kernel
/ftrace-mod.
[So
] "${LINUX_HDROBJ_DIR}/"
297 # Newer kernels need objtool to build modules when CONFIG_STACK_VALIDATION=y
298 if [ -f tools
/objtool
/objtool
]; then
299 cp -a --parents tools
/objtool
/objtool
"${LINUX_HDROBJ_DIR}/"
302 if [ -f "arch/x86/kernel/macros.s" ]; then
303 cp -a --parents arch
/x86
/kernel
/macros.s
"${LINUX_HDROBJ_DIR}/"
306 # Copy modules related stuff, if available
307 if [ -s Module.symvers
]; then
308 cp Module.symvers
"${LINUX_HDROBJ_DIR}"
311 if [ -s System.map
]; then
312 cp System.map
"${LINUX_HDROBJ_DIR}"
315 if [ -s Module.markers
]; then
316 cp Module.markers
"${LINUX_HDROBJ_DIR}"
320 cp .config
"${LINUX_HDROBJ_DIR}"
322 # Make sure the Makefile and version.h have a matching timestamp so that
323 # external modules can be built
324 if [ -s "${LINUX_HDROBJ_DIR}/include/generated/uapi/linux/version.h" ]; then
325 touch -r "${LINUX_HDROBJ_DIR}/Makefile" "${LINUX_HDROBJ_DIR}/include/generated/uapi/linux/version.h"
326 elif [ -s "${LINUX_HDROBJ_DIR}/include/linux/version.h" ]; then
327 touch -r "${LINUX_HDROBJ_DIR}/Makefile" "${LINUX_HDROBJ_DIR}/include/linux/version.h"
329 echo "Missing version.h"
332 touch -r "${LINUX_HDROBJ_DIR}/.config" "${LINUX_HDROBJ_DIR}/include/generated/autoconf.h"
334 # Copy .config to include/config/auto.conf so "make prepare" is unnecessary.
335 cp "${LINUX_HDROBJ_DIR}/.config" "${LINUX_HDROBJ_DIR}/include/config/auto.conf"
337 # Finally clean the object files from the full source tree
340 # And regen the modules support files
341 make modules_prepare CC
="$CC"
343 # On powerpc this object is required to link modules
344 if [ "${karch}" = "powerpc" ]; then
345 make arch
/powerpc
/lib
/crtsavres.o CC
="$CC"
348 # On arm64 between 4.13 and 4.15 this object is required to build with ftrace support
349 if [ "${karch}" = "arm64" ]; then
350 if [ -f "arch/arm64/kernel/ftrace-mod.S" ]; then
351 make arch
/arm64
/kernel
/ftrace-mod.o CC
="$CC"
355 # Version specific tasks
358 # Add Ubuntu ABI number to kernel headers, this is normally done by the packaging code
359 ABINUM
="$(echo "$ktag" | grep -P -o 'Ubuntu-(lts-)?.*-\K\d+(?=\..*)')"
360 echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> include
/generated
/utsrelease.h
361 echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> "${LINUX_HDROBJ_DIR}/include/generated/utsrelease.h"
373 kversion
=$
(make -C "$LINUX_HDROBJ_DIR" -s kernelversion
)
375 # Enter lttng-modules source dir
376 cd "${MODULES_GIT_DIR}"
378 # kernels 3.10 to 3.10.13 and 3.11 to 3.11.2 introduce a deadlock in the
379 # timekeeping subsystem. We want those build to fail.
380 if { vergte
"$kversion" "3.10" && verlte
"$kversion" "3.10.13"; } || \
381 { vergte
"$kversion" "3.11" && verlte
"$kversion" "3.11.2"; }; then
386 KERNELDIR
="${kdir}" make -j"${NPROC}" V
=1 CC
="$CC"
390 # We expect this build to fail, if it doesn't, fail the job.
391 if [ "$?" -eq 0 ]; then
392 echo "This build should have failed."
396 # We have to publish at least one file or the build will fail
397 echo "This kernel is broken, there is a deadlock in the timekeeping subsystem." > "${outdir}/BROKEN.txt.ko"
401 KERNELDIR
="${kdir}" make clean
405 # Build modules against full kernel sources
406 KERNELDIR
="${kdir}" make -j"${NPROC}" V
=1 CC
="$CC"
408 # Install modules to build dir
409 KERNELDIR
="${kdir}" make INSTALL_MOD_PATH
="${outdir}" modules_install
412 KERNELDIR
="${kdir}" make clean
422 MODULES_GIT_DIR
="${WORKSPACE}/src/lttng-modules"
423 LINUX_GIT_DIR
="${WORKSPACE}/src/linux"
425 LINUX_OBJ_DIR
="${WORKSPACE}/linux"
426 LINUX_SRCOBJ_DIR
="${LINUX_OBJ_DIR}/sources"
427 LINUX_HDROBJ_DIR
="${LINUX_OBJ_DIR}/headers"
428 LINUX_INSTOBJ_DIR
="${LINUX_OBJ_DIR}/install"
430 MODULES_OUTPUT_KSRC_DIR
="${WORKSPACE}/build/lttng-modules-ksrc"
431 MODULES_OUTPUT_KHDR_DIR
="${WORKSPACE}/build/lttng-modules-khdr"
433 LINUX_GIT_REF_REPO_DIR
="$HOME/gitcache/linux-stable.git/"
435 OBJ_STORE_URL
="s3://jenkins"
439 # Create build directories
440 mkdir
-p "${LINUX_SRCOBJ_DIR}" "${LINUX_HDROBJ_DIR}" "${LINUX_INSTOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}" "${MODULES_OUTPUT_KHDR_DIR}"
442 git_clone_modules_sources
444 # Setup cross compile env if available
445 if [ "x${cross_arch}" != "x" ]; then
447 case "$cross_arch" in
450 cross_compile
="arm-linux-gnueabihf-"
451 vanilla_config
="allyesconfig"
452 ubuntu_config
="armhf-config.flavour.generic"
457 cross_compile
="aarch64-linux-gnu-"
458 vanilla_config
="allyesconfig"
459 ubuntu_config
="arm64-config.flavour.generic"
464 cross_compile
="powerpc-linux-gnu-"
465 vanilla_config
="ppc44x_defconfig"
466 ubuntu_config
="powerpc-config.flavour.powerpc-smp"
471 cross_compile
="powerpc64le-linux-gnu-"
472 vanilla_config
="pseries_le_defconfig"
473 ubuntu_config
="ppc64el-config.flavour.generic"
477 echo "Unsupported cross arch $cross_arch"
482 # Export variables used by Kbuild for cross compilation
483 export ARCH
="${karch}"
484 export CROSS_COMPILE
="${cross_compile}"
486 # Set arch specific values if we are not cross compiling
487 elif [ "x${arch}" != "x" ]; then
492 vanilla_config
="allyesconfig"
493 ubuntu_config
="i386-config.flavour.generic"
498 vanilla_config
="allyesconfig"
499 ubuntu_config
="amd64-config.flavour.generic"
504 vanilla_config
="allyesconfig"
505 ubuntu_config
="armhf-config.flavour.generic"
510 vanilla_config
="allyesconfig"
511 ubuntu_config
="arm64-config.flavour.generic"
516 vanilla_config
="allyesconfig"
517 ubuntu_config
="powerpc-config.flavour.powerpc-smp"
522 vanilla_config
="allyesconfig"
523 ubuntu_config
="ppc64el-config.flavour.generic"
527 echo "Unsupported arch $arch"
532 echo "Not arch or cross_arch specified"
538 # First get the kernel build from the object store, or build it, if it's
541 echo "# Setup endpoint
542 host_base = obj.internal.efficios.com
543 host_bucket = obj.internal.efficios.com
544 bucket_location = us-east-1
549 secret_key = echo123456
551 # Enable S3 v4 signature APIs
552 signature_v2 = False" > "$WORKSPACE/.s3cfg"
554 url_hash
="$(echo -n "$kgitrepo" | md5sum | awk '{ print $1 }')"
555 obj_name
="linux.tar.bz2"
556 obj_url_prefix
="$OBJ_STORE_URL/linux-build/$url_hash/$ktag/$arch/${cross_arch:-native}"
557 obj_url
="$obj_url_prefix/$obj_name"
560 s3cmd
-c "$WORKSPACE/.s3cfg" get
"$obj_url"
570 echo "File not found"
572 # Build all the things and upload
573 # then finish the module build...
575 git_clone_linux_sources
576 git_export_linux_sources
580 ## PREPARE FULL LINUX SOURCE TREE
583 ## EXTRACT DISTRO STYLE KERNEL HEADERS / DEVEL
584 extract_distro_headers
593 echo "Unknown error? Abort"
601 # Either we downloaded a pre-build kernel or we built it and uploaded
602 # the archive for future builds.
606 # Build modules against full kernel sources
607 build_modules
"${LINUX_SRCOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}"
609 # Build modules against kernel headers
610 build_modules
"${LINUX_HDROBJ_DIR}" "${MODULES_OUTPUT_KHDR_DIR}"
612 # Make sure some modules were actually built
613 tree
"${MODULES_OUTPUT_KSRC_DIR}"
614 if [ "x$(find "${MODULES_OUTPUT_KSRC_DIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
615 echo "No modules built!"
619 tree
"${MODULES_OUTPUT_KHDR_DIR}"
620 if [ "x$(find "${MODULES_OUTPUT_KHDR_DIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
621 echo "No modules built!"