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."
153 fakeroot debian
/rules clean KW_DEFCONFIG_DIR
=.
154 fakeroot debian
/rules genconfigs KW_DEFCONFIG_DIR
=.
155 cp CONFIGS
/"${ubuntu_config}" .config
159 # Force 32bit build on i386, default is 64bit
160 if [ "$arch" = "i386" ]; then
164 # allyesconfig is mostly broken for kernels of the 2.6 series
165 if verlt
"$kversion" "3.0"; then
166 vanilla_config
="defconfig"
169 make "${vanilla_config}"
173 # oldnoconfig was renamed in 4.19
174 if vergte
"$kversion" "4.19"; then
175 update_conf_target
="olddefconfig"
177 update_conf_target
="oldnoconfig"
180 # Fix 'defined(@array)' was removed from recent perl
181 if [ -f "kernel/timeconst.pl" ]; then
182 sed -i 's/defined(\@\(.*\))/@\1/' kernel
/timeconst.pl
185 # Fix syntax of inline assembly which is confused with C++11 raw strings on gcc >= 5
186 if [ "$HOSTCC" != "gcc-4.8" ]; then
187 if [ -f "arch/x86/kvm/svm.c" ]; then
188 sed -i 's/ R"/ R "/g; s/"R"/" R "/g' arch
/x86
/kvm
/svm.c
191 if [ -f "arch/x86/kvm/vmx.c" ]; then
192 sed -i 's/ R"/ R "/g; s/"R"/" R "/g' arch
/x86
/kvm
/vmx.c
196 # Newer binutils don't accept 3 operand 'cmp' instructions on ppc64
197 # Convert them to 'cmpw' which was previously done silently
198 if verlt
"$kversion" "4.9"; then
199 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/"
200 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/"
201 sed -i "s/\$pie \-o \"\$ofile\"/\$pie --no-dynamic-linker -o \"\$ofile\"/" arch
/powerpc
/boot
/wrapper
204 # Fix a typo in v2.6.36.x
205 if [ -f "arch/x86/kernel/entry_64.S" ]; then
206 sed -i 's/END(do_hypervisor_callback)/END(xen_do_hypervisor_callback)/' arch
/x86
/kernel
/entry_64.S
209 # Fix compiler switch in vdso Makefile for 2.6.36 to 2.6.36.2
210 if { vergte
"$kversion" "2.6.36" && verlte
"$kversion" "2.6.36.3"; }; then
211 sed -i 's/-m elf_x86_64/-m64/' arch
/x86
/vdso
/Makefile
212 sed -i 's/-m elf_i386/-m32/' arch
/x86
/vdso
/Makefile
215 # Fix kernel < 3.0 with gcc >= 4.7
216 if verlt
"$kversion" "3.0"; then
217 sed -i '/linux\/compiler.h/a #include <linux\/linkage.h> \/* For asmregparm *\/' arch
/x86
/include
/asm
/ptrace.h
218 sed -i 's/extern long syscall_trace_enter/extern asmregparm long syscall_trace_enter/' arch
/x86
/include
/asm
/ptrace.h
219 sed -i 's/extern void syscall_trace_leave/extern asmregparm void syscall_trace_leave/' arch
/x86
/include
/asm
/ptrace.h
220 echo "header-y += linkage.h" >> include
/linux
/Kbuild
224 if [ "$HOSTCC" == "gcc-4.8" ]; then
225 scripts
/config
--disable CONFIG_CC_STACKPROTECTOR_STRONG
228 # Don't try to sign modules
229 scripts
/config
--disable CONFIG_MODULE_SIG
231 # Disable kernel stack frame correctness validation, introduced in 4.6.0 and currently fails
232 scripts
/config
--disable CONFIG_STACK_VALIDATION
234 # Cause problems with inline assembly on i386
235 scripts
/config
--disable CONFIG_DEBUG_SECTION_MISMATCH
237 # Don't build samples, they are broken on some kernel releases
238 scripts
/config
--disable CONFIG_SAMPLES
239 scripts
/config
--disable CONFIG_BUILD_DOCSRC
242 scripts
/config
--disable CONFIG_KCOV
244 # Broken on some RT kernels
245 scripts
/config
--disable CONFIG_HYPERV
248 scripts
/config
--disable CONFIG_RAPIDIO_TSI721
249 scripts
/config
--disable CONFIG_SGI_XP
250 scripts
/config
--disable CONFIG_MFD_WM8994
251 scripts
/config
--disable CONFIG_DRM_RADEON
252 scripts
/config
--disable CONFIG_SND_SOC_WM5100
254 # IGBVF won't build with recent gcc on 2.6.38.x
255 if { vergte
"$kversion" "2.6.37" && verlt
"$kversion" "2.6.38"; }; then
256 scripts
/config
--disable CONFIG_IGBVF
259 # Set required options
260 scripts
/config
--enable CONFIG_TRACEPOINTS
261 scripts
/config
--enable CONFIG_KALLSYMS
262 scripts
/config
--enable CONFIG_HIGH_RES_TIMERS
263 scripts
/config
--enable CONFIG_KPROBES
264 scripts
/config
--enable CONFIG_FTRACE
265 scripts
/config
--enable CONFIG_BLK_DEV_IO_TRACE
266 scripts
/config
--enable CONFIG_KALLSYMS_ALL
267 scripts
/config
--enable CONFIG_HAVE_SYSCALL_TRACEPOINTS
268 scripts
/config
--enable CONFIG_PERF_EVENTS
269 scripts
/config
--enable CONFIG_EVENT_TRACING
270 scripts
/config
--enable CONFIG_KRETPROBES
275 make "$update_conf_target" CC
="$CC"
276 make -j"$NPROC" CC
="$CC"
278 krelease
=$
(make -s kernelrelease CC
="$CC")
280 # Save the kernel and modules
281 mkdir
-p "$LINUX_INSTOBJ_DIR/boot"
282 make INSTALL_MOD_PATH
="$LINUX_INSTOBJ_DIR" INSTALL_MOD_STRIP
=1 modules_install CC
="$CC"
283 make INSTALL_PATH
="$LINUX_INSTOBJ_DIR/boot" install CC
="$CC"
284 rm -f "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source" "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/build"
285 ln -s ..
/..
/..
/..
/sources
"$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source"
286 ln -s ..
/..
/..
/..
/sources
"$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source"
290 extract_distro_headers
() {
292 # Enter linux source dir
293 cd "${LINUX_SRCOBJ_DIR}"
296 # For RT kernels, copy version file
297 if [ -s localversion-rt
]; then
298 cp -a localversion-rt
"${LINUX_HDROBJ_DIR}"
301 # Copy all Makefile related stuff
302 find .
-path './include/*' -prune \
303 -o -path './scripts/*' -prune -o -type f \
304 \
( -name 'Makefile*' -o -name 'Kconfig*' -o -name 'Kbuild*' -o \
305 -name '*.sh' -o -name '*.pl' -o -name '*.lds' \
) \
306 -print |
cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
308 # Copy base scripts and include dirs
309 cp -a scripts include
"${LINUX_HDROBJ_DIR}"
312 (find arch
-name include
-type d
-print0 | \
313 xargs -0 -n1 -i: find : -type f
) | \
314 cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
317 (find arch
-name scripts
-type d
-print0 | \
318 xargs -0 -n1 -i: find : -type f
) | \
319 cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
322 rm -f "${LINUX_HDROBJ_DIR}/scripts/*.o"
323 rm -f "${LINUX_HDROBJ_DIR}/scripts/*/*.o"
325 # On powerpc 32bits this object is required to link modules
326 if [ "${karch}" = "powerpc" ]; then
327 if [ "x$(scripts/config -s CONFIG_PPC64)" = "xy" ] && vergte
"${kversion}" "5.4"; then
330 cp -a --parents arch
/powerpc
/lib
/crtsavres.
[So
] "${LINUX_HDROBJ_DIR}/"
334 # On arm64 between 4.13 and 1.15 this object is required to build with ftrace support
335 if [ "${karch}" = "arm64" ]; then
336 if [ -f "arch/arm64/kernel/ftrace-mod.S" ]; then
337 cp -a --parents arch
/arm64
/kernel
/ftrace-mod.
[So
] "${LINUX_HDROBJ_DIR}/"
341 # Newer kernels need objtool to build modules when CONFIG_STACK_VALIDATION=y
342 if [ -f tools
/objtool
/objtool
]; then
343 cp -a --parents tools
/objtool
/objtool
"${LINUX_HDROBJ_DIR}/"
346 if [ -f "arch/x86/kernel/macros.s" ]; then
347 cp -a --parents arch
/x86
/kernel
/macros.s
"${LINUX_HDROBJ_DIR}/"
350 # Copy modules related stuff, if available
351 if [ -s Module.symvers
]; then
352 cp Module.symvers
"${LINUX_HDROBJ_DIR}"
355 if [ -s System.map
]; then
356 cp System.map
"${LINUX_HDROBJ_DIR}"
359 if [ -s Module.markers
]; then
360 cp Module.markers
"${LINUX_HDROBJ_DIR}"
364 cp .config
"${LINUX_HDROBJ_DIR}"
366 # Make sure the Makefile and version.h have a matching timestamp so that
367 # external modules can be built
368 if [ -s "${LINUX_HDROBJ_DIR}/include/generated/uapi/linux/version.h" ]; then
369 touch -r "${LINUX_HDROBJ_DIR}/Makefile" "${LINUX_HDROBJ_DIR}/include/generated/uapi/linux/version.h"
370 elif [ -s "${LINUX_HDROBJ_DIR}/include/linux/version.h" ]; then
371 touch -r "${LINUX_HDROBJ_DIR}/Makefile" "${LINUX_HDROBJ_DIR}/include/linux/version.h"
373 echo "Missing version.h"
376 touch -r "${LINUX_HDROBJ_DIR}/.config" "${LINUX_HDROBJ_DIR}/include/generated/autoconf.h"
378 # Copy .config to include/config/auto.conf so "make prepare" is unnecessary.
379 cp "${LINUX_HDROBJ_DIR}/.config" "${LINUX_HDROBJ_DIR}/include/config/auto.conf"
381 # Finally clean the object files from the full source tree
384 # And regen the modules support files
385 make modules_prepare CC
="$CC"
387 # On powerpc 32bits this object is required to link modules
388 if [ "${karch}" = "powerpc" ]; then
389 if [ "x$(scripts/config -s CONFIG_PPC64)" = "xy" ] && vergte
"${kversion}" "5.4"; then
392 make arch
/powerpc
/lib
/crtsavres.o CC
="$CC"
396 # On arm64 between 4.13 and 4.15 this object is required to build with ftrace support
397 if [ "${karch}" = "arm64" ]; then
398 if [ -f "arch/arm64/kernel/ftrace-mod.S" ]; then
399 make arch
/arm64
/kernel
/ftrace-mod.o CC
="$CC"
403 # Version specific tasks
406 # Add Ubuntu ABI number to kernel headers, this is normally done by the packaging code
407 ABINUM
="$(echo "$ktag" | grep -P -o 'Ubuntu-(lts-)?.*-\K\d+(?=\..*)')"
408 echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> include
/generated
/utsrelease.h
409 echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> "${LINUX_HDROBJ_DIR}/include/generated/utsrelease.h"
421 kversion
=$
(make -C "$LINUX_HDROBJ_DIR" -s kernelversion
)
423 # Enter lttng-modules source dir
424 cd "${MODULES_GIT_DIR}"
426 # kernels 3.10 to 3.10.13 and 3.11 to 3.11.2 introduce a deadlock in the
427 # timekeeping subsystem. We want those build to fail.
428 if { vergte
"$kversion" "3.10" && verlte
"$kversion" "3.10.13"; } || \
429 { vergte
"$kversion" "3.11" && verlte
"$kversion" "3.11.2"; }; then
434 KERNELDIR
="${kdir}" make -j"${NPROC}" V
=1 CC
="$CC"
439 # We expect this build to fail, if it doesn't, fail the job.
440 if [ "$ret" -eq 0 ]; then
441 echo "This build should have failed."
445 # We have to publish at least one file or the build will fail
446 echo "This kernel is broken, there is a deadlock in the timekeeping subsystem." > "${outdir}/BROKEN.txt.ko"
448 KERNELDIR
="${kdir}" make clean
452 # Build modules against full kernel sources
453 KERNELDIR
="${kdir}" make -j"${NPROC}" V
=1 CC
="$CC"
455 # Install modules to build dir
456 KERNELDIR
="${kdir}" make INSTALL_MOD_PATH
="${outdir}" modules_install
459 KERNELDIR
="${kdir}" make clean
469 MODULES_GIT_DIR
="${WORKSPACE}/src/lttng-modules"
470 LINUX_GIT_DIR
="${WORKSPACE}/src/linux"
472 LINUX_OBJ_DIR
="${WORKSPACE}/linux"
473 LINUX_SRCOBJ_DIR
="${LINUX_OBJ_DIR}/sources"
474 LINUX_HDROBJ_DIR
="${LINUX_OBJ_DIR}/headers"
475 LINUX_INSTOBJ_DIR
="${LINUX_OBJ_DIR}/install"
477 MODULES_OUTPUT_KSRC_DIR
="${WORKSPACE}/build/lttng-modules-ksrc"
478 MODULES_OUTPUT_KHDR_DIR
="${WORKSPACE}/build/lttng-modules-khdr"
480 LINUX_GIT_REF_REPO_DIR
="$HOME/gitcache/linux-stable.git/"
482 OBJ_STORE_URL
="s3://jenkins"
486 # Create build directories
487 mkdir
-p "${LINUX_SRCOBJ_DIR}" "${LINUX_HDROBJ_DIR}" "${LINUX_INSTOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}" "${MODULES_OUTPUT_KHDR_DIR}"
489 git_clone_modules_sources
491 # Setup cross compile env if available
492 if [ "x${cross_arch}" != "x" ]; then
494 case "$cross_arch" in
497 cross_compile
="arm-linux-gnueabihf-"
498 vanilla_config
="imx_v6_v7_defconfig"
499 ubuntu_config
="armhf-config.flavour.generic"
504 cross_compile
="aarch64-linux-gnu-"
505 vanilla_config
="defconfig"
506 ubuntu_config
="arm64-config.flavour.generic"
511 cross_compile
="powerpc-linux-gnu-"
512 vanilla_config
="ppc44x_defconfig"
513 ubuntu_config
="powerpc-config.flavour.powerpc-smp"
518 cross_compile
="powerpc64le-linux-gnu-"
519 vanilla_config
="pseries_le_defconfig"
520 ubuntu_config
="ppc64el-config.flavour.generic"
524 echo "Unsupported cross arch $cross_arch"
529 # Export variables used by Kbuild for cross compilation
530 export ARCH
="${karch}"
531 export CROSS_COMPILE
="${cross_compile}"
533 # Set arch specific values if we are not cross compiling
534 elif [ "x${arch}" != "x" ]; then
539 vanilla_config
="allyesconfig"
540 ubuntu_config
="i386-config.flavour.generic"
545 vanilla_config
="allyesconfig"
546 ubuntu_config
="amd64-config.flavour.generic"
551 vanilla_config
="allyesconfig"
552 ubuntu_config
="armhf-config.flavour.generic"
557 vanilla_config
="allyesconfig"
558 ubuntu_config
="arm64-config.flavour.generic"
563 vanilla_config
="allyesconfig"
564 ubuntu_config
="powerpc-config.flavour.powerpc-smp"
569 vanilla_config
="allyesconfig"
570 ubuntu_config
="ppc64el-config.flavour.generic"
574 echo "Unsupported arch $arch"
579 echo "No arch or cross_arch specified"
585 # First get the kernel build from the object store, or build it, if it's
588 echo "# Setup endpoint
589 host_base = obj.internal.efficios.com
590 host_bucket = obj.internal.efficios.com
591 bucket_location = us-east-1
596 secret_key = echo123456
598 # Enable S3 v4 signature APIs
599 signature_v2 = False" > "$WORKSPACE/.s3cfg"
601 url_hash
="$(echo -n "$kgitrepo" | md5sum | awk '{ print $1 }')"
602 obj_name
="linux.tar.bz2"
603 obj_url_prefix
="$OBJ_STORE_URL/linux-build/$url_hash/$ktag/$arch/${cross_arch:-native}"
604 obj_url
="$obj_url_prefix/$obj_name"
607 s3cmd
-c "$WORKSPACE/.s3cfg" get
"$obj_url"
617 echo "File not found"
619 # Build all the things and upload
620 # then finish the module build...
622 git_clone_linux_sources
623 git_export_linux_sources
627 ## PREPARE FULL LINUX SOURCE TREE
630 ## EXTRACT DISTRO STYLE KERNEL HEADERS / DEVEL
631 extract_distro_headers
640 echo "Unknown error? Abort"
648 # Either we downloaded a pre-build kernel or we built it and uploaded
649 # the archive for future builds.
653 # Build modules against full kernel sources
654 build_modules
"${LINUX_SRCOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}"
656 # Build modules against kernel headers
657 build_modules
"${LINUX_HDROBJ_DIR}" "${MODULES_OUTPUT_KHDR_DIR}"
659 # Make sure some modules were actually built
660 tree
"${MODULES_OUTPUT_KSRC_DIR}"
661 if [ "x$(find "${MODULES_OUTPUT_KSRC_DIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
662 echo "No modules built!"
666 tree
"${MODULES_OUTPUT_KHDR_DIR}"
667 if [ "x$(find "${MODULES_OUTPUT_KHDR_DIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
668 echo "No modules built!"