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 # oldnoconfig was renamed in 4.19
164 if vergte
"$kversion" "4.19"; then
165 update_conf_target
="olddefconfig"
167 update_conf_target
="oldnoconfig"
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 [ "$HOSTCC" != "gcc-4.8" ]; then
177 if [ -f "arch/x86/kvm/svm.c" ]; then
178 sed -i 's/ R"/ R "/g; s/"R"/" R "/g' arch
/x86
/kvm
/svm.c
181 if [ -f "arch/x86/kvm/vmx.c" ]; then
182 sed -i 's/ R"/ R "/g; s/"R"/" R "/g' arch
/x86
/kvm
/vmx.c
186 # Newer binutils don't accept 3 operand 'cmp' instructions on ppc64
187 # Convert them to 'cmpw' which was previously done silently
188 if verlt
"$kversion" "4.9"; then
189 find arch
/powerpc
/ -name "*.S" -print0 |
xargs -0 sed -i "s/\(cmp\)\(\s\+[a-zA-Z0-9]\+,\s*[a-zA-Z0-9]\+,\s*[a-zA-Z0-9]\+\)/cmpw\2/"
190 find arch
/powerpc
/ -name "*.S" -print0 |
xargs -0 sed -i "s/\(cmpli\)\(\s\+[a-zA-Z0-9]\+,\s*[a-zA-Z0-9]\+,\s*[a-zA-Z0-9]\+\)/cmplwi\2/"
191 sed -i "s/\$pie \-o \"\$ofile\"/\$pie --no-dynamic-linker -o \"\$ofile\"/" arch
/powerpc
/boot
/wrapper
194 # Fix a typo in v2.6.36.x
195 if [ -f "arch/x86/kernel/entry_64.S" ]; then
196 sed -i 's/END(do_hypervisor_callback)/END(xen_do_hypervisor_callback)/' arch
/x86
/kernel
/entry_64.S
199 # Fix compiler switch in vdso Makefile for 2.6.36 to 2.6.36.2
200 if { vergte
"$kversion" "2.6.36" && verlte
"$kversion" "2.6.36.3"; }; then
201 sed -i 's/-m elf_x86_64/-m64/' arch
/x86
/vdso
/Makefile
202 sed -i 's/-m elf_i386/-m32/' arch
/x86
/vdso
/Makefile
205 # Fix kernel < 3.0 with gcc >= 4.7
206 if verlt
"$kversion" "3.0"; then
207 sed -i '/linux\/compiler.h/a #include <linux\/linkage.h> \/* For asmregparm *\/' arch
/x86
/include
/asm
/ptrace.h
208 sed -i 's/extern long syscall_trace_enter/extern asmregparm long syscall_trace_enter/' arch
/x86
/include
/asm
/ptrace.h
209 sed -i 's/extern void syscall_trace_leave/extern asmregparm void syscall_trace_leave/' arch
/x86
/include
/asm
/ptrace.h
210 echo "header-y += linkage.h" >> include
/linux
/Kbuild
214 if [ "$HOSTCC" == "gcc-4.8" ]; then
215 scripts
/config
--disable CONFIG_CC_STACKPROTECTOR_STRONG
218 # Don't try to sign modules
219 scripts
/config
--disable CONFIG_MODULE_SIG
221 # Disable kernel stack frame correctness validation, introduced in 4.6.0 and currently fails
222 scripts
/config
--disable CONFIG_STACK_VALIDATION
224 # Cause problems with inline assembly on i386
225 scripts
/config
--disable CONFIG_DEBUG_SECTION_MISMATCH
227 # Don't build samples, they are broken on some kernel releases
228 scripts
/config
--disable CONFIG_SAMPLES
229 scripts
/config
--disable CONFIG_BUILD_DOCSRC
232 scripts
/config
--disable CONFIG_KCOV
234 # Broken on some RT kernels
235 scripts
/config
--disable CONFIG_HYPERV
238 scripts
/config
--disable CONFIG_RAPIDIO_TSI721
239 scripts
/config
--disable CONFIG_SGI_XP
240 scripts
/config
--disable CONFIG_MFD_WM8994
241 scripts
/config
--disable CONFIG_DRM_RADEON
242 scripts
/config
--disable CONFIG_SND_SOC_WM5100
244 # IGBVF won't build with recent gcc on 2.6.38.x
245 if { vergte
"$kversion" "2.6.37" && verlt
"$kversion" "2.6.38"; }; then
246 scripts
/config
--disable CONFIG_IGBVF
249 # Set required options
250 scripts
/config
--enable CONFIG_TRACEPOINTS
251 scripts
/config
--enable CONFIG_KALLSYMS
252 scripts
/config
--enable CONFIG_HIGH_RES_TIMERS
253 scripts
/config
--enable CONFIG_KPROBES
254 scripts
/config
--enable CONFIG_FTRACE
255 scripts
/config
--enable CONFIG_BLK_DEV_IO_TRACE
256 scripts
/config
--enable CONFIG_KALLSYMS_ALL
257 scripts
/config
--enable CONFIG_HAVE_SYSCALL_TRACEPOINTS
258 scripts
/config
--enable CONFIG_PERF_EVENTS
259 scripts
/config
--enable CONFIG_EVENT_TRACING
260 scripts
/config
--enable CONFIG_KRETPROBES
265 make "$update_conf_target" CC
="$CC"
266 make -j"$NPROC" CC
="$CC"
268 krelease
=$
(make -s kernelrelease CC
="$CC")
270 # Save the kernel and modules
271 mkdir
-p "$LINUX_INSTOBJ_DIR/boot"
272 make INSTALL_MOD_PATH
="$LINUX_INSTOBJ_DIR" INSTALL_MOD_STRIP
=1 modules_install CC
="$CC"
273 make INSTALL_PATH
="$LINUX_INSTOBJ_DIR/boot" install CC
="$CC"
274 rm -f "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source" "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/build"
275 ln -s ..
/..
/..
/..
/sources
"$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source"
276 ln -s ..
/..
/..
/..
/sources
"$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source"
280 extract_distro_headers
() {
282 # Enter linux source dir
283 cd "${LINUX_SRCOBJ_DIR}"
286 # For RT kernels, copy version file
287 if [ -s localversion-rt
]; then
288 cp -a localversion-rt
"${LINUX_HDROBJ_DIR}"
291 # Copy all Makefile related stuff
292 find .
-path './include/*' -prune \
293 -o -path './scripts/*' -prune -o -type f \
294 \
( -name 'Makefile*' -o -name 'Kconfig*' -o -name 'Kbuild*' -o \
295 -name '*.sh' -o -name '*.pl' -o -name '*.lds' \
) \
296 -print |
cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
298 # Copy base scripts and include dirs
299 cp -a scripts include
"${LINUX_HDROBJ_DIR}"
302 (find arch
-name include
-type d
-print0 | \
303 xargs -0 -n1 -i: find : -type f
) | \
304 cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
307 (find arch
-name scripts
-type d
-print0 | \
308 xargs -0 -n1 -i: find : -type f
) | \
309 cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
312 rm -f "${LINUX_HDROBJ_DIR}/scripts/*.o"
313 rm -f "${LINUX_HDROBJ_DIR}/scripts/*/*.o"
315 # On powerpc 32bits this object is required to link modules
316 if [ "${karch}" = "powerpc" ]; then
317 if [ "x$(scripts/config -s CONFIG_PPC64)" = "xy" ] && vergte
"${kversion}" "5.4"; then
320 cp -a --parents arch
/powerpc
/lib
/crtsavres.
[So
] "${LINUX_HDROBJ_DIR}/"
324 # On arm64 between 4.13 and 1.15 this object is required to build with ftrace support
325 if [ "${karch}" = "arm64" ]; then
326 if [ -f "arch/arm64/kernel/ftrace-mod.S" ]; then
327 cp -a --parents arch
/arm64
/kernel
/ftrace-mod.
[So
] "${LINUX_HDROBJ_DIR}/"
331 # Newer kernels need objtool to build modules when CONFIG_STACK_VALIDATION=y
332 if [ -f tools
/objtool
/objtool
]; then
333 cp -a --parents tools
/objtool
/objtool
"${LINUX_HDROBJ_DIR}/"
336 if [ -f "arch/x86/kernel/macros.s" ]; then
337 cp -a --parents arch
/x86
/kernel
/macros.s
"${LINUX_HDROBJ_DIR}/"
340 # Copy modules related stuff, if available
341 if [ -s Module.symvers
]; then
342 cp Module.symvers
"${LINUX_HDROBJ_DIR}"
345 if [ -s System.map
]; then
346 cp System.map
"${LINUX_HDROBJ_DIR}"
349 if [ -s Module.markers
]; then
350 cp Module.markers
"${LINUX_HDROBJ_DIR}"
354 cp .config
"${LINUX_HDROBJ_DIR}"
356 # Make sure the Makefile and version.h have a matching timestamp so that
357 # external modules can be built
358 if [ -s "${LINUX_HDROBJ_DIR}/include/generated/uapi/linux/version.h" ]; then
359 touch -r "${LINUX_HDROBJ_DIR}/Makefile" "${LINUX_HDROBJ_DIR}/include/generated/uapi/linux/version.h"
360 elif [ -s "${LINUX_HDROBJ_DIR}/include/linux/version.h" ]; then
361 touch -r "${LINUX_HDROBJ_DIR}/Makefile" "${LINUX_HDROBJ_DIR}/include/linux/version.h"
363 echo "Missing version.h"
366 touch -r "${LINUX_HDROBJ_DIR}/.config" "${LINUX_HDROBJ_DIR}/include/generated/autoconf.h"
368 # Copy .config to include/config/auto.conf so "make prepare" is unnecessary.
369 cp "${LINUX_HDROBJ_DIR}/.config" "${LINUX_HDROBJ_DIR}/include/config/auto.conf"
371 # Finally clean the object files from the full source tree
374 # And regen the modules support files
375 make modules_prepare CC
="$CC"
377 # On powerpc 32bits this object is required to link modules
378 if [ "${karch}" = "powerpc" ]; then
379 if [ "x$(scripts/config -s CONFIG_PPC64)" = "xy" ] && vergte
"${kversion}" "5.4"; then
382 make arch
/powerpc
/lib
/crtsavres.o CC
="$CC"
386 # On arm64 between 4.13 and 4.15 this object is required to build with ftrace support
387 if [ "${karch}" = "arm64" ]; then
388 if [ -f "arch/arm64/kernel/ftrace-mod.S" ]; then
389 make arch
/arm64
/kernel
/ftrace-mod.o CC
="$CC"
393 # Version specific tasks
396 # Add Ubuntu ABI number to kernel headers, this is normally done by the packaging code
397 ABINUM
="$(echo "$ktag" | grep -P -o 'Ubuntu-(lts-)?.*-\K\d+(?=\..*)')"
398 echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> include
/generated
/utsrelease.h
399 echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> "${LINUX_HDROBJ_DIR}/include/generated/utsrelease.h"
411 kversion
=$
(make -C "$LINUX_HDROBJ_DIR" -s kernelversion
)
413 # Enter lttng-modules source dir
414 cd "${MODULES_GIT_DIR}"
416 # kernels 3.10 to 3.10.13 and 3.11 to 3.11.2 introduce a deadlock in the
417 # timekeeping subsystem. We want those build to fail.
418 if { vergte
"$kversion" "3.10" && verlte
"$kversion" "3.10.13"; } || \
419 { vergte
"$kversion" "3.11" && verlte
"$kversion" "3.11.2"; }; then
424 KERNELDIR
="${kdir}" make -j"${NPROC}" V
=1 CC
="$CC"
429 # We expect this build to fail, if it doesn't, fail the job.
430 if [ "$ret" -eq 0 ]; then
431 echo "This build should have failed."
435 # We have to publish at least one file or the build will fail
436 echo "This kernel is broken, there is a deadlock in the timekeeping subsystem." > "${outdir}/BROKEN.txt.ko"
438 KERNELDIR
="${kdir}" make clean
442 # Build modules against full kernel sources
443 KERNELDIR
="${kdir}" make -j"${NPROC}" V
=1 CC
="$CC"
445 # Install modules to build dir
446 KERNELDIR
="${kdir}" make INSTALL_MOD_PATH
="${outdir}" modules_install
449 KERNELDIR
="${kdir}" make clean
459 MODULES_GIT_DIR
="${WORKSPACE}/src/lttng-modules"
460 LINUX_GIT_DIR
="${WORKSPACE}/src/linux"
462 LINUX_OBJ_DIR
="${WORKSPACE}/linux"
463 LINUX_SRCOBJ_DIR
="${LINUX_OBJ_DIR}/sources"
464 LINUX_HDROBJ_DIR
="${LINUX_OBJ_DIR}/headers"
465 LINUX_INSTOBJ_DIR
="${LINUX_OBJ_DIR}/install"
467 MODULES_OUTPUT_KSRC_DIR
="${WORKSPACE}/build/lttng-modules-ksrc"
468 MODULES_OUTPUT_KHDR_DIR
="${WORKSPACE}/build/lttng-modules-khdr"
470 LINUX_GIT_REF_REPO_DIR
="$HOME/gitcache/linux-stable.git/"
472 OBJ_STORE_URL
="s3://jenkins"
476 # Create build directories
477 mkdir
-p "${LINUX_SRCOBJ_DIR}" "${LINUX_HDROBJ_DIR}" "${LINUX_INSTOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}" "${MODULES_OUTPUT_KHDR_DIR}"
479 git_clone_modules_sources
481 # Setup cross compile env if available
482 if [ "x${cross_arch}" != "x" ]; then
484 case "$cross_arch" in
487 cross_compile
="arm-linux-gnueabihf-"
488 vanilla_config
="imx_v6_v7_defconfig"
489 ubuntu_config
="armhf-config.flavour.generic"
494 cross_compile
="aarch64-linux-gnu-"
495 vanilla_config
="defconfig"
496 ubuntu_config
="arm64-config.flavour.generic"
501 cross_compile
="powerpc-linux-gnu-"
502 vanilla_config
="ppc44x_defconfig"
503 ubuntu_config
="powerpc-config.flavour.powerpc-smp"
508 cross_compile
="powerpc64le-linux-gnu-"
509 vanilla_config
="pseries_le_defconfig"
510 ubuntu_config
="ppc64el-config.flavour.generic"
514 echo "Unsupported cross arch $cross_arch"
519 # Export variables used by Kbuild for cross compilation
520 export ARCH
="${karch}"
521 export CROSS_COMPILE
="${cross_compile}"
523 # Set arch specific values if we are not cross compiling
524 elif [ "x${arch}" != "x" ]; then
529 vanilla_config
="allyesconfig"
530 ubuntu_config
="i386-config.flavour.generic"
535 vanilla_config
="allyesconfig"
536 ubuntu_config
="amd64-config.flavour.generic"
541 vanilla_config
="allyesconfig"
542 ubuntu_config
="armhf-config.flavour.generic"
547 vanilla_config
="allyesconfig"
548 ubuntu_config
="arm64-config.flavour.generic"
553 vanilla_config
="allyesconfig"
554 ubuntu_config
="powerpc-config.flavour.powerpc-smp"
559 vanilla_config
="allyesconfig"
560 ubuntu_config
="ppc64el-config.flavour.generic"
564 echo "Unsupported arch $arch"
569 echo "No arch or cross_arch specified"
575 # First get the kernel build from the object store, or build it, if it's
578 echo "# Setup endpoint
579 host_base = obj.internal.efficios.com
580 host_bucket = obj.internal.efficios.com
581 bucket_location = us-east-1
586 secret_key = echo123456
588 # Enable S3 v4 signature APIs
589 signature_v2 = False" > "$WORKSPACE/.s3cfg"
591 url_hash
="$(echo -n "$kgitrepo" | md5sum | awk '{ print $1 }')"
592 obj_name
="linux.tar.bz2"
593 obj_url_prefix
="$OBJ_STORE_URL/linux-build/$url_hash/$ktag/$arch/${cross_arch:-native}"
594 obj_url
="$obj_url_prefix/$obj_name"
597 s3cmd
-c "$WORKSPACE/.s3cfg" get
"$obj_url"
607 echo "File not found"
609 # Build all the things and upload
610 # then finish the module build...
612 git_clone_linux_sources
613 git_export_linux_sources
617 ## PREPARE FULL LINUX SOURCE TREE
620 ## EXTRACT DISTRO STYLE KERNEL HEADERS / DEVEL
621 extract_distro_headers
630 echo "Unknown error? Abort"
638 # Either we downloaded a pre-build kernel or we built it and uploaded
639 # the archive for future builds.
643 # Build modules against full kernel sources
644 build_modules
"${LINUX_SRCOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}"
646 # Build modules against kernel headers
647 build_modules
"${LINUX_HDROBJ_DIR}" "${MODULES_OUTPUT_KHDR_DIR}"
649 # Make sure some modules were actually built
650 tree
"${MODULES_OUTPUT_KSRC_DIR}"
651 if [ "x$(find "${MODULES_OUTPUT_KSRC_DIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
652 echo "No modules built!"
656 tree
"${MODULES_OUTPUT_KHDR_DIR}"
657 if [ "x$(find "${MODULES_OUTPUT_KHDR_DIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
658 echo "No modules built!"