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 # shellcheck disable=SC2015
36 [ "$1" = "$2" ] && return 1 || verlte
"$1" "$2"
40 [ "$1" = "$(printf '%s\n%s' "$1" "$2" | sort -V | tail -n1)" ]
44 # shellcheck disable=SC2015
45 [ "$1" = "$2" ] && return 1 || vergte
"$1" "$2"
49 git_clone_modules_sources
() {
50 mkdir
-p "$MODULES_GIT_DIR"
52 # If the version starts with "refs/", checkout the specific git ref, otherwise treat it
54 if [ "${mversion:0:5}" = "refs/" ]; then
55 git clone
--no-tags --depth=1 "${mgitrepo}" "$MODULES_GIT_DIR"
56 (cd "$MODULES_GIT_DIR" && git fetch origin
"${mversion}" && git checkout FETCH_HEAD
)
58 git clone
--no-tags --depth=1 -b "${mversion}" "${mgitrepo}" "$MODULES_GIT_DIR"
62 # Checkout a shallow kernel tree of the specified tag
63 git_clone_linux_sources
() {
64 mkdir
-p "$LINUX_GIT_DIR"
65 git clone
--depth=1 -b "${ktag}" --reference "$LINUX_GIT_REF_REPO_DIR" "${kgitrepo}" "$LINUX_GIT_DIR"
69 # Export the kernel sources from the git repo
70 git_export_linux_sources
() {
72 git archive
"${ktag}" |
tar -x -C "$LINUX_SRCOBJ_DIR"
76 # Upload the tar archive to the object store
77 upload_archive_obj
() {
78 s3cmd
-c "$WORKSPACE/.s3cfg" put
"$WORKSPACE/$obj_name" "$obj_url_prefix/"
79 rm -f "$WORKSPACE/$obj_name"
83 extract_archive_obj
() {
84 tar -xf "$WORKSPACE/$obj_name" -C "$LINUX_OBJ_DIR"
85 rm -f "$WORKSPACE/$obj_name"
91 tar -cf "$WORKSPACE/$obj_name" -I pbzip2 .
95 # Find the most recent GCC version supported by the kernel sources
99 cd "$LINUX_SRCOBJ_DIR"
101 kversion
=$
(make -s kernelversion
)
105 for cc
in gcc-5 gcc-4.8
; do
106 if "${CROSS_COMPILE:-}${cc}" -I include
/ -D__LINUX_COMPILER_H -D__LINUX_COMPILER_TYPES_H -E include
/linux
/compiler-gcc.h
; then
114 if [ "x$selected_cc" = "x" ]; then
115 echo "Found no suitable compiler."
119 # Force gcc-4.8 for kernels before 3.18
120 if { verlt
"$kversion" "3.18"; }; then
124 if [ "$selected_cc" != "gcc-4.8" ]; then
125 # Older kernel Makefiles do not expect the compiler to default to PIE
127 KCFLAGS
="-fno-pie -no-pie -fno-stack-protector"
129 export KAFLAGS KCFLAGS KCPPFLAGS
132 export CC
="${CROSS_COMPILE:-}${selected_cc}"
133 export HOSTCC
="${selected_cc}"
139 build_linux_kernel
() {
140 cd "$LINUX_SRCOBJ_DIR"
142 kversion
=$
(make -s kernelversion
)
144 # Generate kernel configuration
147 if [ "${cross_arch}" = "powerpc" ]; then
148 if vergte
"${kversion}" "4.10"; then
149 echo "Ubuntu removed big endian powerpc configuration from kernel >= 4.10. Don't try to build it."
154 # Disable riscv64 config generation, we don't have a toolchain on bionic
155 sed -i 's/riscv64 //' debian.master
/etc
/kernelconfig
157 fakeroot debian
/rules clean KW_DEFCONFIG_DIR
=.
158 fakeroot debian
/rules genconfigs KW_DEFCONFIG_DIR
=.
159 cp CONFIGS
/"${ubuntu_config}" .config
163 # Force 32bit build on i386, default is 64bit
164 if [ "$arch" = "i386" ]; then
168 # allyesconfig is mostly broken for kernels of the 2.6 series
169 if verlt
"$kversion" "3.0"; then
170 vanilla_config
="defconfig"
173 make "${vanilla_config}"
177 # oldnoconfig was renamed in 4.19
178 if vergte
"$kversion" "4.19"; then
179 update_conf_target
="olddefconfig"
181 update_conf_target
="oldnoconfig"
184 # Fix 'defined(@array)' was removed from recent perl
185 if [ -f "kernel/timeconst.pl" ]; then
186 sed -i 's/defined(\@\(.*\))/@\1/' kernel
/timeconst.pl
189 # Fix syntax of inline assembly which is confused with C++11 raw strings on gcc >= 5
190 if [ "$HOSTCC" != "gcc-4.8" ]; then
191 if [ -f "arch/x86/kvm/svm.c" ]; then
192 sed -i 's/ R"/ R "/g; s/"R"/" R "/g' arch
/x86
/kvm
/svm.c
195 if [ -f "arch/x86/kvm/vmx.c" ]; then
196 sed -i 's/ R"/ R "/g; s/"R"/" R "/g' arch
/x86
/kvm
/vmx.c
200 # Newer binutils don't accept 3 operand 'cmp' instructions on ppc64
201 # Convert them to 'cmpw' which was previously done silently
202 if verlt
"$kversion" "4.9"; then
203 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/"
204 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/"
205 sed -i "s/\$pie \-o \"\$ofile\"/\$pie --no-dynamic-linker -o \"\$ofile\"/" arch
/powerpc
/boot
/wrapper
208 # Fix a typo in v2.6.36.x
209 if [ -f "arch/x86/kernel/entry_64.S" ]; then
210 sed -i 's/END(do_hypervisor_callback)/END(xen_do_hypervisor_callback)/' arch
/x86
/kernel
/entry_64.S
213 # Fix compiler switch in vdso Makefile for 2.6.36 to 2.6.36.2
214 if { vergte
"$kversion" "2.6.36" && verlte
"$kversion" "2.6.36.3"; }; then
215 sed -i 's/-m elf_x86_64/-m64/' arch
/x86
/vdso
/Makefile
216 sed -i 's/-m elf_i386/-m32/' arch
/x86
/vdso
/Makefile
219 # Fix kernel < 3.0 with gcc >= 4.7
220 if verlt
"$kversion" "3.0"; then
221 sed -i '/linux\/compiler.h/a #include <linux\/linkage.h> \/* For asmregparm *\/' arch
/x86
/include
/asm
/ptrace.h
222 sed -i 's/extern long syscall_trace_enter/extern asmregparm long syscall_trace_enter/' arch
/x86
/include
/asm
/ptrace.h
223 sed -i 's/extern void syscall_trace_leave/extern asmregparm void syscall_trace_leave/' arch
/x86
/include
/asm
/ptrace.h
224 echo "header-y += linkage.h" >> include
/linux
/Kbuild
228 if [ "$HOSTCC" == "gcc-4.8" ]; then
229 scripts
/config
--disable CONFIG_CC_STACKPROTECTOR_STRONG
232 # Don't try to sign modules
233 scripts
/config
--disable CONFIG_MODULE_SIG
235 # Disable kernel stack frame correctness validation, introduced in 4.6.0 and currently fails
236 scripts
/config
--disable CONFIG_STACK_VALIDATION
238 # Cause problems with inline assembly on i386
239 scripts
/config
--disable CONFIG_DEBUG_SECTION_MISMATCH
241 # Don't build samples, they are broken on some kernel releases
242 scripts
/config
--disable CONFIG_SAMPLES
243 scripts
/config
--disable CONFIG_BUILD_DOCSRC
246 scripts
/config
--disable CONFIG_KCOV
248 # Broken on some RT kernels
249 scripts
/config
--disable CONFIG_HYPERV
252 scripts
/config
--disable CONFIG_RAPIDIO_TSI721
253 scripts
/config
--disable CONFIG_SGI_XP
254 scripts
/config
--disable CONFIG_MFD_WM8994
255 scripts
/config
--disable CONFIG_DRM_RADEON
256 scripts
/config
--disable CONFIG_SND_SOC_WM5100
258 # IGBVF won't build with recent gcc on 2.6.38.x
259 if { vergte
"$kversion" "2.6.37" && verlt
"$kversion" "2.6.38"; }; then
260 scripts
/config
--disable CONFIG_IGBVF
263 # Set required options
264 scripts
/config
--enable CONFIG_TRACEPOINTS
265 scripts
/config
--enable CONFIG_KALLSYMS
266 scripts
/config
--enable CONFIG_HIGH_RES_TIMERS
267 scripts
/config
--enable CONFIG_KPROBES
268 scripts
/config
--enable CONFIG_FTRACE
269 scripts
/config
--enable CONFIG_BLK_DEV_IO_TRACE
270 scripts
/config
--enable CONFIG_KALLSYMS_ALL
271 scripts
/config
--enable CONFIG_HAVE_SYSCALL_TRACEPOINTS
272 scripts
/config
--enable CONFIG_PERF_EVENTS
273 scripts
/config
--enable CONFIG_EVENT_TRACING
274 scripts
/config
--enable CONFIG_KRETPROBES
279 make "$update_conf_target" CC
="$CC"
280 make -j"$NPROC" CC
="$CC"
282 krelease
=$
(make -s kernelrelease CC
="$CC")
284 # Save the kernel and modules
285 mkdir
-p "$LINUX_INSTOBJ_DIR/boot"
286 make INSTALL_MOD_PATH
="$LINUX_INSTOBJ_DIR" INSTALL_MOD_STRIP
=1 modules_install CC
="$CC"
287 make INSTALL_MOD_PATH
="$LINUX_INSTOBJ_DIR" INSTALL_PATH
="$LINUX_INSTOBJ_DIR/boot" install CC
="$CC"
288 rm -f "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source" "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/build"
289 ln -s ..
/..
/..
/..
/sources
"$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source"
290 ln -s ..
/..
/..
/..
/sources
"$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source"
294 extract_distro_headers
() {
296 # Enter linux source dir
297 cd "${LINUX_SRCOBJ_DIR}"
300 # For RT kernels, copy version file
301 if [ -s localversion-rt
]; then
302 cp -a localversion-rt
"${LINUX_HDROBJ_DIR}"
305 # Copy all Makefile related stuff
306 find .
-path './include/*' -prune \
307 -o -path './scripts/*' -prune -o -type f \
308 \
( -name 'Makefile*' -o -name 'Kconfig*' -o -name 'Kbuild*' -o \
309 -name '*.sh' -o -name '*.pl' -o -name '*.lds' \
) \
310 -print |
cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
312 # Copy base scripts and include dirs
313 cp -a scripts include
"${LINUX_HDROBJ_DIR}"
316 (find arch
-name include
-type d
-print0 | \
317 xargs -0 -n1 -i: find : -type f
) | \
318 cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
321 (find arch
-name scripts
-type d
-print0 | \
322 xargs -0 -n1 -i: find : -type f
) | \
323 cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
326 rm -f "${LINUX_HDROBJ_DIR}/scripts/*.o"
327 rm -f "${LINUX_HDROBJ_DIR}/scripts/*/*.o"
329 # On powerpc 32bits this object is required to link modules
330 if [ "${karch}" = "powerpc" ]; then
331 if [ "x$(scripts/config -s CONFIG_PPC64)" = "xy" ] && vergte
"${kversion}" "5.4"; then
334 cp -a --parents arch
/powerpc
/lib
/crtsavres.
[So
] "${LINUX_HDROBJ_DIR}/"
338 # On arm64 between 4.13 and 1.15 this object is required to build with ftrace support
339 if [ "${karch}" = "arm64" ]; then
340 if [ -f "arch/arm64/kernel/ftrace-mod.S" ]; then
341 cp -a --parents arch
/arm64
/kernel
/ftrace-mod.
[So
] "${LINUX_HDROBJ_DIR}/"
345 # Newer kernels need objtool to build modules when CONFIG_STACK_VALIDATION=y
346 if [ -f tools
/objtool
/objtool
]; then
347 cp -a --parents tools
/objtool
/objtool
"${LINUX_HDROBJ_DIR}/"
350 if [ -f "arch/x86/kernel/macros.s" ]; then
351 cp -a --parents arch
/x86
/kernel
/macros.s
"${LINUX_HDROBJ_DIR}/"
354 # Copy modules related stuff, if available
355 if [ -s Module.symvers
]; then
356 cp Module.symvers
"${LINUX_HDROBJ_DIR}"
359 if [ -s System.map
]; then
360 cp System.map
"${LINUX_HDROBJ_DIR}"
363 if [ -s Module.markers
]; then
364 cp Module.markers
"${LINUX_HDROBJ_DIR}"
368 cp .config
"${LINUX_HDROBJ_DIR}"
370 # Make sure the Makefile and version.h have a matching timestamp so that
371 # external modules can be built
372 if [ -s "${LINUX_HDROBJ_DIR}/include/generated/uapi/linux/version.h" ]; then
373 touch -r "${LINUX_HDROBJ_DIR}/Makefile" "${LINUX_HDROBJ_DIR}/include/generated/uapi/linux/version.h"
374 elif [ -s "${LINUX_HDROBJ_DIR}/include/linux/version.h" ]; then
375 touch -r "${LINUX_HDROBJ_DIR}/Makefile" "${LINUX_HDROBJ_DIR}/include/linux/version.h"
377 echo "Missing version.h"
380 touch -r "${LINUX_HDROBJ_DIR}/.config" "${LINUX_HDROBJ_DIR}/include/generated/autoconf.h"
382 # Copy .config to include/config/auto.conf so "make prepare" is unnecessary.
383 cp "${LINUX_HDROBJ_DIR}/.config" "${LINUX_HDROBJ_DIR}/include/config/auto.conf"
385 # Finally clean the object files from the full source tree
388 # And regen the modules support files
389 make modules_prepare CC
="$CC"
391 # On powerpc 32bits this object is required to link modules
392 if [ "${karch}" = "powerpc" ]; then
393 if [ "x$(scripts/config -s CONFIG_PPC64)" = "xy" ] && vergte
"${kversion}" "5.4"; then
396 make arch
/powerpc
/lib
/crtsavres.o CC
="$CC"
400 # On arm64 between 4.13 and 4.15 this object is required to build with ftrace support
401 if [ "${karch}" = "arm64" ]; then
402 if [ -f "arch/arm64/kernel/ftrace-mod.S" ]; then
403 make arch
/arm64
/kernel
/ftrace-mod.o CC
="$CC"
407 # Version specific tasks
410 # Add Ubuntu ABI number to kernel headers, this is normally done by the packaging code
411 ABINUM
="$(echo "$ktag" | grep -P -o 'Ubuntu-(lts-)?.*-\K\d+(?=\..*)')"
412 echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> include
/generated
/utsrelease.h
413 echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> "${LINUX_HDROBJ_DIR}/include/generated/utsrelease.h"
425 kversion
=$
(make -C "$LINUX_HDROBJ_DIR" -s kernelversion
)
427 # Enter lttng-modules source dir
428 cd "${MODULES_GIT_DIR}"
430 # kernels 3.10 to 3.10.13 and 3.11 to 3.11.2 introduce a deadlock in the
431 # timekeeping subsystem. We want those build to fail.
432 if { vergte
"$kversion" "3.10" && verlte
"$kversion" "3.10.13"; } || \
433 { vergte
"$kversion" "3.11" && verlte
"$kversion" "3.11.2"; }; then
438 KERNELDIR
="${kdir}" make -j"${NPROC}" V
=1 CC
="$CC"
443 # We expect this build to fail, if it doesn't, fail the job.
444 if [ "$ret" -eq 0 ]; then
445 echo "This build should have failed."
449 # We have to publish at least one file or the build will fail
450 echo "This kernel is broken, there is a deadlock in the timekeeping subsystem." > "${outdir}/BROKEN.txt.ko"
452 KERNELDIR
="${kdir}" make clean
456 # Build modules against full kernel sources
457 KERNELDIR
="${kdir}" make -j"${NPROC}" V
=1 CC
="$CC"
459 # Install modules to build dir
460 KERNELDIR
="${kdir}" make INSTALL_MOD_PATH
="${outdir}" modules_install
463 KERNELDIR
="${kdir}" make clean
473 MODULES_GIT_DIR
="${WORKSPACE}/src/lttng-modules"
474 LINUX_GIT_DIR
="${WORKSPACE}/src/linux"
476 LINUX_OBJ_DIR
="${WORKSPACE}/linux"
477 LINUX_SRCOBJ_DIR
="${LINUX_OBJ_DIR}/sources"
478 LINUX_HDROBJ_DIR
="${LINUX_OBJ_DIR}/headers"
479 LINUX_INSTOBJ_DIR
="${LINUX_OBJ_DIR}/install"
481 MODULES_OUTPUT_KSRC_DIR
="${WORKSPACE}/build/lttng-modules-ksrc"
482 MODULES_OUTPUT_KHDR_DIR
="${WORKSPACE}/build/lttng-modules-khdr"
484 LINUX_GIT_REF_REPO_DIR
="$HOME/gitcache/linux-stable.git/"
486 OBJ_STORE_URL
="s3://jenkins"
490 # Create build directories
491 mkdir
-p "${LINUX_SRCOBJ_DIR}" "${LINUX_HDROBJ_DIR}" "${LINUX_INSTOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}" "${MODULES_OUTPUT_KHDR_DIR}"
493 git_clone_modules_sources
495 # Setup cross compile env if available
496 if [ "x${cross_arch}" != "x" ]; then
498 case "$cross_arch" in
501 cross_compile
="arm-linux-gnueabihf-"
502 vanilla_config
="imx_v6_v7_defconfig"
503 ubuntu_config
="armhf-config.flavour.generic"
508 cross_compile
="aarch64-linux-gnu-"
509 vanilla_config
="defconfig"
510 ubuntu_config
="arm64-config.flavour.generic"
515 cross_compile
="powerpc-linux-gnu-"
516 vanilla_config
="ppc44x_defconfig"
517 ubuntu_config
="powerpc-config.flavour.powerpc-smp"
522 cross_compile
="powerpc64le-linux-gnu-"
523 vanilla_config
="pseries_le_defconfig"
524 ubuntu_config
="ppc64el-config.flavour.generic"
528 echo "Unsupported cross arch $cross_arch"
533 # Export variables used by Kbuild for cross compilation
534 export ARCH
="${karch}"
535 export CROSS_COMPILE
="${cross_compile}"
537 # Set arch specific values if we are not cross compiling
538 elif [ "x${arch}" != "x" ]; then
543 vanilla_config
="allyesconfig"
544 ubuntu_config
="i386-config.flavour.generic"
549 vanilla_config
="allyesconfig"
550 ubuntu_config
="amd64-config.flavour.generic"
555 vanilla_config
="allyesconfig"
556 ubuntu_config
="armhf-config.flavour.generic"
561 vanilla_config
="allyesconfig"
562 ubuntu_config
="arm64-config.flavour.generic"
567 vanilla_config
="allyesconfig"
568 ubuntu_config
="powerpc-config.flavour.powerpc-smp"
573 vanilla_config
="allyesconfig"
574 ubuntu_config
="ppc64el-config.flavour.generic"
578 echo "Unsupported arch $arch"
583 echo "No arch or cross_arch specified"
589 # First get the kernel build from the object store, or build it, if it's
592 echo "# Setup endpoint
593 host_base = obj.internal.efficios.com
594 host_bucket = obj.internal.efficios.com
595 bucket_location = us-east-1
600 secret_key = echo123456
602 # Enable S3 v4 signature APIs
603 signature_v2 = False" > "$WORKSPACE/.s3cfg"
605 url_hash
="$(echo -n "$kgitrepo" | md5sum | awk '{ print $1 }')"
606 obj_name
="linux.tar.bz2"
608 if [ "x${cross_arch}" = "x" ]; then
609 obj_url_prefix
="$OBJ_STORE_URL/linux-build/$url_hash/$ktag/$arch/native"
611 obj_url_prefix
="$OBJ_STORE_URL/linux-build/$url_hash/$ktag/${cross_arch}"
614 obj_url
="$obj_url_prefix/$obj_name"
617 s3cmd
-c "$WORKSPACE/.s3cfg" get
"$obj_url"
627 echo "File not found"
629 # Build all the things and upload
630 # then finish the module build...
632 git_clone_linux_sources
633 git_export_linux_sources
637 ## PREPARE FULL LINUX SOURCE TREE
640 ## EXTRACT DISTRO STYLE KERNEL HEADERS / DEVEL
641 extract_distro_headers
650 echo "Unknown error? Abort"
658 # Either we downloaded a pre-build kernel or we built it and uploaded
659 # the archive for future builds.
663 # Build modules against full kernel sources
664 build_modules
"${LINUX_SRCOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}"
666 # Build modules against kernel headers
667 build_modules
"${LINUX_HDROBJ_DIR}" "${MODULES_OUTPUT_KHDR_DIR}"
669 # Make sure some modules were actually built
670 tree
"${MODULES_OUTPUT_KSRC_DIR}"
671 if [ "x$(find "${MODULES_OUTPUT_KSRC_DIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
672 echo "No modules built!"
676 tree
"${MODULES_OUTPUT_KHDR_DIR}"
677 if [ "x$(find "${MODULES_OUTPUT_KHDR_DIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
678 echo "No modules built!"