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/>.
22 cross_arch
=${cross_arch:-}
24 kgitrepo
=${kgitrepo:-}
25 mversion
=${mversion:-}
26 mgitrepo
=${mgitrepo:-}
31 # Kernel version compare functions
33 [ "$1" = "$(printf '%s\n%s' "$1" "$2" | sort -V | head -n1)" ]
37 # shellcheck disable=SC2015
38 [ "$1" = "$2" ] && return 1 || verlte
"$1" "$2"
42 [ "$1" = "$(printf '%s\n%s' "$1" "$2" | sort -V | tail -n1)" ]
46 # shellcheck disable=SC2015
47 [ "$1" = "$2" ] && return 1 || vergte
"$1" "$2"
51 git_clone_modules_sources
() {
52 mkdir
-p "$MODULES_GIT_DIR"
54 # If the version starts with "refs/", checkout the specific git ref, otherwise treat it
56 if [ "${mversion:0:5}" = "refs/" ]; then
57 git clone
--no-tags --depth=1 "${mgitrepo}" "$MODULES_GIT_DIR"
58 (cd "$MODULES_GIT_DIR" && git fetch origin
"${mversion}" && git checkout FETCH_HEAD
)
60 git clone
--no-tags --depth=1 -b "${mversion}" "${mgitrepo}" "$MODULES_GIT_DIR"
64 # Checkout a shallow kernel tree of the specified tag
65 git_clone_linux_sources
() {
66 mkdir
-p "$LINUX_GIT_DIR"
67 git clone
--depth=1 -b "${ktag}" --reference "$LINUX_GIT_REF_REPO_DIR" "${kgitrepo}" "$LINUX_GIT_DIR"
71 # Export the kernel sources from the git repo
72 git_export_linux_sources
() {
74 git archive
"${ktag}" |
tar -x -C "$LINUX_SRCOBJ_DIR"
78 # Upload the tar archive to the object store
79 upload_archive_obj
() {
80 s3cmd
-c "$WORKSPACE/.s3cfg" put
"$WORKSPACE/$obj_name" "$obj_url_prefix/"
81 rm -f "$WORKSPACE/$obj_name"
85 extract_archive_obj
() {
86 tar -xf "$WORKSPACE/$obj_name" -C "$LINUX_OBJ_DIR"
87 rm -f "$WORKSPACE/$obj_name"
93 tar -cf "$WORKSPACE/$obj_name" -I pbzip2 .
97 # Find the most recent GCC version supported by the kernel sources
101 cd "$LINUX_SRCOBJ_DIR"
103 kversion
=$
(make -s kernelversion
)
107 for cc
in gcc-8 gcc-5 gcc-4.8
; do
108 if "${CROSS_COMPILE:-}${cc}" -I include
/ -D__LINUX_COMPILER_H -D__LINUX_COMPILER_TYPES_H -E include
/linux
/compiler-gcc.h
; then
116 if [ "x$selected_cc" = "x" ]; then
117 echo "Found no suitable compiler."
121 # Force gcc-4.8 for kernels before 3.18
122 if { verlt
"$kversion" "3.18"; }; then
126 if [ "$selected_cc" != "gcc-4.8" ]; then
127 # Older kernel Makefiles do not expect the compiler to default to PIE
129 KCFLAGS
="-fno-pie -no-pie -fno-stack-protector"
131 export KAFLAGS KCFLAGS KCPPFLAGS
134 export CC
="${CROSS_COMPILE:-}${selected_cc}"
135 export HOSTCC
="${selected_cc}"
141 build_linux_kernel
() {
142 cd "$LINUX_SRCOBJ_DIR"
144 kversion
=$
(make -s kernelversion
)
146 # Generate kernel configuration
149 if [ "${cross_arch}" = "powerpc" ]; then
150 if vergte
"${kversion}" "4.10"; then
151 echo "Ubuntu removed big endian powerpc configuration from kernel >= 4.10. Don't try to build it."
156 # Disable riscv64 config generation, we don't have a toolchain on bionic
157 sed -i 's/riscv64 //' debian.master
/etc
/kernelconfig
159 # Hack for kernel Ubuntu-hwe-5.8
160 if [ ! -f "debian/compat" ]; then
161 echo "10" > "debian/compat"
164 fakeroot debian
/rules clean KW_DEFCONFIG_DIR
=.
165 fakeroot debian
/rules genconfigs KW_DEFCONFIG_DIR
=.
166 cp CONFIGS
/"${ubuntu_config}" .config
170 # Force 32bit build on i386, default is 64bit
171 if [ "$arch" = "i386" ]; then
175 # allyesconfig is mostly broken for kernels of the 2.6 series
176 if verlt
"$kversion" "3.0"; then
177 vanilla_config
="defconfig"
180 make "${vanilla_config}"
184 # oldnoconfig was renamed in 4.19
185 if vergte
"$kversion" "4.19"; then
186 update_conf_target
="olddefconfig"
188 update_conf_target
="oldnoconfig"
191 # Fix 'defined(@array)' was removed from recent perl
192 if [ -f "kernel/timeconst.pl" ]; then
193 sed -i 's/defined(\@\(.*\))/@\1/' kernel
/timeconst.pl
196 # Fix syntax of inline assembly which is confused with C++11 raw strings on gcc >= 5
197 if [ "$HOSTCC" != "gcc-4.8" ]; then
198 if [ -f "arch/x86/kvm/svm.c" ]; then
199 sed -i 's/ R"/ R "/g; s/"R"/" R "/g' arch
/x86
/kvm
/svm.c
202 if [ -f "arch/x86/kvm/vmx.c" ]; then
203 sed -i 's/ R"/ R "/g; s/"R"/" R "/g' arch
/x86
/kvm
/vmx.c
207 # Newer binutils don't accept 3 operand 'cmp' instructions on ppc64
208 # Convert them to 'cmpw' which was previously done silently
209 if verlt
"$kversion" "4.9"; then
210 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/"
211 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/"
212 sed -i "s/\$pie \-o \"\$ofile\"/\$pie --no-dynamic-linker -o \"\$ofile\"/" arch
/powerpc
/boot
/wrapper
215 # Fix a typo in v2.6.36.x
216 if [ -f "arch/x86/kernel/entry_64.S" ]; then
217 sed -i 's/END(do_hypervisor_callback)/END(xen_do_hypervisor_callback)/' arch
/x86
/kernel
/entry_64.S
220 # Fix compiler switch in vdso Makefile for 2.6.36 to 2.6.36.2
221 if { vergte
"$kversion" "2.6.36" && verlte
"$kversion" "2.6.36.3"; }; then
222 sed -i 's/-m elf_x86_64/-m64/' arch
/x86
/vdso
/Makefile
223 sed -i 's/-m elf_i386/-m32/' arch
/x86
/vdso
/Makefile
226 # Fix kernel < 3.0 with gcc >= 4.7
227 if verlt
"$kversion" "3.0"; then
228 sed -i '/linux\/compiler.h/a #include <linux\/linkage.h> \/* For asmregparm *\/' arch
/x86
/include
/asm
/ptrace.h
229 sed -i 's/extern long syscall_trace_enter/extern asmregparm long syscall_trace_enter/' arch
/x86
/include
/asm
/ptrace.h
230 sed -i 's/extern void syscall_trace_leave/extern asmregparm void syscall_trace_leave/' arch
/x86
/include
/asm
/ptrace.h
231 echo "header-y += linkage.h" >> include
/linux
/Kbuild
235 if [ "$HOSTCC" == "gcc-4.8" ]; then
236 scripts
/config
--disable CONFIG_CC_STACKPROTECTOR_STRONG
239 # Don't try to sign modules
240 scripts
/config
--disable CONFIG_MODULE_SIG
242 # Disable kernel stack frame correctness validation, introduced in 4.6.0 and currently fails
243 scripts
/config
--disable CONFIG_STACK_VALIDATION
245 # Cause problems with inline assembly on i386
246 scripts
/config
--disable CONFIG_DEBUG_SECTION_MISMATCH
248 # Don't build samples, they are broken on some kernel releases
249 scripts
/config
--disable CONFIG_SAMPLES
250 scripts
/config
--disable CONFIG_BUILD_DOCSRC
253 scripts
/config
--disable CONFIG_KCOV
255 # Broken on some RT kernels
256 scripts
/config
--disable CONFIG_HYPERV
259 scripts
/config
--disable CONFIG_RAPIDIO_TSI721
260 scripts
/config
--disable CONFIG_SGI_XP
261 scripts
/config
--disable CONFIG_MFD_WM8994
262 scripts
/config
--disable CONFIG_DRM_RADEON
263 scripts
/config
--disable CONFIG_SND_SOC_WM5100
265 # IGBVF won't build with recent gcc on 2.6.38.x
266 if { vergte
"$kversion" "2.6.37" && verlt
"$kversion" "2.6.38"; }; then
267 scripts
/config
--disable CONFIG_IGBVF
270 # Don't fail the build on warnings
271 scripts
/config
--disable CONFIG_WERROR
273 # Set required options
274 scripts
/config
--enable CONFIG_TRACEPOINTS
275 scripts
/config
--enable CONFIG_KALLSYMS
276 scripts
/config
--enable CONFIG_HIGH_RES_TIMERS
277 scripts
/config
--enable CONFIG_KPROBES
278 scripts
/config
--enable CONFIG_FTRACE
279 scripts
/config
--enable CONFIG_BLK_DEV_IO_TRACE
280 scripts
/config
--enable CONFIG_KALLSYMS_ALL
281 scripts
/config
--enable CONFIG_HAVE_SYSCALL_TRACEPOINTS
282 scripts
/config
--enable CONFIG_PERF_EVENTS
283 scripts
/config
--enable CONFIG_EVENT_TRACING
284 scripts
/config
--enable CONFIG_KRETPROBES
286 # FIXME: disable objtool on vmlinux, it OOMs on allyesconfig
287 sed -i 's/objtool_link vmlinux.o//' scripts
/link-vmlinux.sh || true
288 # Starting with v6.1-rc6
289 sed -i 's/^objtool-enabled := .*/objtool-enabled := /' scripts
/Makefile.vmlinux_o || true
294 make "$update_conf_target" CC
="$CC"
295 make -j"$NPROC" CC
="$CC"
297 krelease
=$
(make -s kernelrelease CC
="$CC")
299 # Save the kernel and modules
300 mkdir
-p "$LINUX_INSTOBJ_DIR/boot"
301 make INSTALL_MOD_PATH
="$LINUX_INSTOBJ_DIR" INSTALL_MOD_STRIP
=1 modules_install CC
="$CC"
302 make INSTALL_MOD_PATH
="$LINUX_INSTOBJ_DIR" INSTALL_PATH
="$LINUX_INSTOBJ_DIR/boot" install CC
="$CC"
303 rm -f "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source" "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/build"
304 ln -s ..
/..
/..
/..
/sources
"$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source"
305 ln -s ..
/..
/..
/..
/sources
"$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source"
309 extract_distro_headers
() {
311 # Enter linux source dir
312 cd "${LINUX_SRCOBJ_DIR}"
315 # For RT kernels, copy version file
316 if [ -s localversion-rt
]; then
317 cp -a localversion-rt
"${LINUX_HDROBJ_DIR}"
320 # Copy all Makefile related stuff
321 find .
-path './include/*' -prune \
322 -o -path './scripts/*' -prune -o -type f \
323 \
( -name 'Makefile*' -o -name 'Kconfig*' -o -name 'Kbuild*' -o \
324 -name '*.sh' -o -name '*.pl' -o -name '*.lds' \
) \
325 -print |
cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
327 # Copy base scripts and include dirs
328 cp -a scripts include
"${LINUX_HDROBJ_DIR}"
331 (find arch
-name include
-type d
-print0 | \
332 xargs -0 -n1 -i: find : -type f
) | \
333 cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
336 (find arch
-name scripts
-type d
-print0 | \
337 xargs -0 -n1 -i: find : -type f
) | \
338 cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
341 rm -f "${LINUX_HDROBJ_DIR}/scripts/*.o"
342 rm -f "${LINUX_HDROBJ_DIR}/scripts/*/*.o"
344 # On powerpc 32bits this object is required to link modules
345 if [ "${karch}" = "powerpc" ]; then
346 if [ "x$(scripts/config -s CONFIG_PPC64)" = "xy" ] && vergte
"${kversion}" "5.4"; then
349 cp -a --parents arch
/powerpc
/lib
/crtsavres.
[So
] "${LINUX_HDROBJ_DIR}/"
353 # On arm64 between 4.13 and 1.15 this object is required to build with ftrace support
354 if [ "${karch}" = "arm64" ]; then
355 if [ -f "arch/arm64/kernel/ftrace-mod.S" ]; then
356 cp -a --parents arch
/arm64
/kernel
/ftrace-mod.
[So
] "${LINUX_HDROBJ_DIR}/"
360 # Newer kernels need objtool to build modules when CONFIG_STACK_VALIDATION=y
361 if [ -f tools
/objtool
/objtool
]; then
362 cp -a --parents tools
/objtool
/objtool
"${LINUX_HDROBJ_DIR}/"
365 if [ -f "arch/x86/kernel/macros.s" ]; then
366 cp -a --parents arch
/x86
/kernel
/macros.s
"${LINUX_HDROBJ_DIR}/"
369 # Copy modules related stuff, if available
370 if [ -s Module.symvers
]; then
371 cp Module.symvers
"${LINUX_HDROBJ_DIR}"
374 if [ -s System.map
]; then
375 cp System.map
"${LINUX_HDROBJ_DIR}"
378 if [ -s Module.markers
]; then
379 cp Module.markers
"${LINUX_HDROBJ_DIR}"
383 cp .config
"${LINUX_HDROBJ_DIR}"
385 # Make sure the Makefile and version.h have a matching timestamp so that
386 # external modules can be built
387 if [ -s "${LINUX_HDROBJ_DIR}/include/generated/uapi/linux/version.h" ]; then
388 touch -r "${LINUX_HDROBJ_DIR}/Makefile" "${LINUX_HDROBJ_DIR}/include/generated/uapi/linux/version.h"
389 elif [ -s "${LINUX_HDROBJ_DIR}/include/linux/version.h" ]; then
390 touch -r "${LINUX_HDROBJ_DIR}/Makefile" "${LINUX_HDROBJ_DIR}/include/linux/version.h"
392 echo "Missing version.h"
395 touch -r "${LINUX_HDROBJ_DIR}/.config" "${LINUX_HDROBJ_DIR}/include/generated/autoconf.h"
397 # Copy .config to include/config/auto.conf so "make prepare" is unnecessary.
398 if [ ! -f "${LINUX_HDROBJ_DIR}/include/config/auto.conf" ]; then
399 cp "${LINUX_HDROBJ_DIR}/.config" "${LINUX_HDROBJ_DIR}/include/config/auto.conf"
402 # Finally clean the object files from the full source tree
405 # And regen the modules support files
406 make modules_prepare CC
="$CC"
408 # On powerpc 32bits this object is required to link modules
409 if [ "${karch}" = "powerpc" ]; then
410 if [ "x$(scripts/config -s CONFIG_PPC64)" = "xy" ] && vergte
"${kversion}" "5.4"; then
413 make arch
/powerpc
/lib
/crtsavres.o CC
="$CC"
417 # On arm64 between 4.13 and 4.15 this object is required to build with ftrace support
418 if [ "${karch}" = "arm64" ]; then
419 if [ -f "arch/arm64/kernel/ftrace-mod.S" ]; then
420 make arch
/arm64
/kernel
/ftrace-mod.o CC
="$CC"
424 # Version specific tasks
427 # Add Ubuntu ABI number to kernel headers, this is normally done by the packaging code
428 ABINUM
="$(echo "$ktag" | grep -P -o 'Ubuntu-(lts-)?.*-\K\d+(?=\..*)')"
429 echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> include
/generated
/utsrelease.h
430 echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> "${LINUX_HDROBJ_DIR}/include/generated/utsrelease.h"
442 kversion
=$
(make -C "$LINUX_HDROBJ_DIR" -s kernelversion
)
444 # Try to catch some compatibility problems by turning some
445 # warnings into errors.
446 #export KCFLAGS="$KCFLAGS -Wall -Werror"
448 # Enter lttng-modules source dir
449 cd "${MODULES_GIT_DIR}"
451 # kernels 3.10 to 3.10.13 and 3.11 to 3.11.2 introduce a deadlock in the
452 # timekeeping subsystem. We want those build to fail.
453 if { vergte
"$kversion" "3.10" && verlte
"$kversion" "3.10.13"; } || \
454 { vergte
"$kversion" "3.11" && verlte
"$kversion" "3.11.2"; }; then
459 KERNELDIR
="${kdir}" make -j"${NPROC}" V
=1 CC
="$CC"
464 # We expect this build to fail, if it doesn't, fail the job.
465 if [ "$ret" -eq 0 ]; then
466 echo "This build should have failed."
470 # We have to publish at least one file or the build will fail
471 echo "This kernel is broken, there is a deadlock in the timekeeping subsystem." > "${outdir}/BROKEN.txt.ko"
473 KERNELDIR
="${kdir}" make clean
477 # Build modules against full kernel sources
478 KERNELDIR
="${kdir}" make -j"${NPROC}" V
=1 CC
="$CC"
480 # Install modules to build dir
481 KERNELDIR
="${kdir}" make INSTALL_MOD_PATH
="${outdir}" modules_install
484 KERNELDIR
="${kdir}" make clean
494 MODULES_GIT_DIR
="${WORKSPACE}/src/lttng-modules"
495 LINUX_GIT_DIR
="${WORKSPACE}/src/linux"
497 LINUX_OBJ_DIR
="${WORKSPACE}/linux"
498 LINUX_SRCOBJ_DIR
="${LINUX_OBJ_DIR}/sources"
499 LINUX_HDROBJ_DIR
="${LINUX_OBJ_DIR}/headers"
500 LINUX_INSTOBJ_DIR
="${LINUX_OBJ_DIR}/install"
502 MODULES_OUTPUT_KSRC_DIR
="${WORKSPACE}/build/lttng-modules-ksrc"
503 MODULES_OUTPUT_KHDR_DIR
="${WORKSPACE}/build/lttng-modules-khdr"
505 LINUX_GIT_REF_REPO_DIR
="$HOME/gitcache/linux-stable.git/"
507 OBJ_STORE_URL
="s3://jenkins"
511 # Create build directories
512 mkdir
-p "${LINUX_SRCOBJ_DIR}" "${LINUX_HDROBJ_DIR}" "${LINUX_INSTOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}" "${MODULES_OUTPUT_KHDR_DIR}"
514 git_clone_modules_sources
516 # Setup cross compile env if available
517 if [ "x${cross_arch}" != "x" ]; then
519 case "$cross_arch" in
522 cross_compile
="arm-linux-gnueabihf-"
523 vanilla_config
="imx_v6_v7_defconfig"
524 ubuntu_config
="armhf-config.flavour.generic"
529 cross_compile
="aarch64-linux-gnu-"
530 vanilla_config
="defconfig"
531 ubuntu_config
="arm64-config.flavour.generic"
536 cross_compile
="powerpc-linux-gnu-"
537 vanilla_config
="ppc44x_defconfig"
538 ubuntu_config
="powerpc-config.flavour.powerpc-smp"
543 cross_compile
="powerpc64le-linux-gnu-"
544 vanilla_config
="pseries_le_defconfig"
545 ubuntu_config
="ppc64el-config.flavour.generic"
549 echo "Unsupported cross arch $cross_arch"
554 # Export variables used by Kbuild for cross compilation
555 export ARCH
="${karch}"
556 export CROSS_COMPILE
="${cross_compile}"
558 # Set arch specific values if we are not cross compiling
559 elif [ "x${arch}" != "x" ]; then
564 vanilla_config
="allyesconfig"
565 ubuntu_config
="i386-config.flavour.generic"
570 vanilla_config
="allyesconfig"
571 ubuntu_config
="amd64-config.flavour.generic"
576 vanilla_config
="allyesconfig"
577 ubuntu_config
="armhf-config.flavour.generic"
582 vanilla_config
="allyesconfig"
583 ubuntu_config
="arm64-config.flavour.generic"
588 vanilla_config
="allyesconfig"
589 ubuntu_config
="powerpc-config.flavour.powerpc-smp"
594 vanilla_config
="allyesconfig"
595 ubuntu_config
="ppc64el-config.flavour.generic"
599 echo "Unsupported arch $arch"
604 echo "No arch or cross_arch specified"
610 # First get the kernel build from the object store, or build it, if it's
613 echo "# Setup endpoint
614 host_base = obj.internal.efficios.com
615 host_bucket = obj.internal.efficios.com
616 bucket_location = us-east-1
621 secret_key = echo123456
623 # Enable S3 v4 signature APIs
624 signature_v2 = False" > "$WORKSPACE/.s3cfg"
626 url_hash
="$(echo -n "$kgitrepo" | md5sum | awk '{ print $1 }')"
627 obj_name
="linux.tar.bz2"
629 if [ "x${cross_arch}" = "x" ]; then
630 obj_url_prefix
="$OBJ_STORE_URL/linux-build/$url_hash/$ktag/$arch/native"
632 obj_url_prefix
="$OBJ_STORE_URL/linux-build/$url_hash/$ktag/${cross_arch}"
635 obj_url
="$obj_url_prefix/$obj_name"
638 s3cmd
-c "$WORKSPACE/.s3cfg" get
"$obj_url"
648 echo "File not found"
650 # Build all the things and upload
651 # then finish the module build...
653 git_clone_linux_sources
654 git_export_linux_sources
658 ## PREPARE FULL LINUX SOURCE TREE
661 ## EXTRACT DISTRO STYLE KERNEL HEADERS / DEVEL
662 extract_distro_headers
671 echo "Unknown error? Abort"
679 # Either we downloaded a pre-build kernel or we built it and uploaded
680 # the archive for future builds.
684 # Build modules against full kernel sources
685 build_modules
"${LINUX_SRCOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}"
687 # Build modules against kernel headers
688 build_modules
"${LINUX_HDROBJ_DIR}" "${MODULES_OUTPUT_KHDR_DIR}"
690 # Make sure some modules were actually built
691 tree
"${MODULES_OUTPUT_KSRC_DIR}"
692 if [ "x$(find "${MODULES_OUTPUT_KSRC_DIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
693 echo "No modules built!"
697 tree
"${MODULES_OUTPUT_KHDR_DIR}"
698 if [ "x$(find "${MODULES_OUTPUT_KHDR_DIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
699 echo "No modules built!"