https://github.com/torvalds/linux
- HEAD
- refs/heads/arm64-uaccess
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/certifi-2024.7.4
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/idna-3.7
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/requests-2.32.2
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/setuptools-70.0.0
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/urllib3-2.2.2
- refs/heads/master
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- v2.6.20-rc4
- v2.6.20-rc3
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Tip revision: 094226ad94f471a9f19e8f8e7140a09c2625abaa authored by Linus Torvalds on 13 November 2022, 21:12:55 UTC
Linux 6.1-rc5
Linux 6.1-rc5
Tip revision: 094226a
Build.txt
1) perf build
=============
The perf build process consists of several separated building blocks,
which are linked together to form the perf binary:
- libperf library (static)
- perf builtin commands
- traceevent library (static)
- GTK ui library
Several makefiles govern the perf build:
- Makefile
top level Makefile working as a wrapper that calls the main
Makefile.perf with a -j option to do parallel builds.
- Makefile.perf
main makefile that triggers build of all perf objects including
installation and documentation processing.
- tools/build/Makefile.build
main makefile of the build framework
- tools/build/Build.include
build framework generic definitions
- Build makefiles
makefiles that defines build objects
Please refer to tools/build/Documentation/Build.txt for more
information about build framework.
2) perf build
=============
The Makefile.perf triggers the build framework for build objects:
perf, libperf, gtk
resulting in following objects:
$ ls *-in.o
gtk-in.o libperf-in.o perf-in.o
Those objects are then used in final linking:
libperf-gtk.so <- gtk-in.o libperf-in.o
perf <- perf-in.o libperf-in.o
NOTE this description is omitting other libraries involved, only
focusing on build framework outcomes
3) Build with ASan or UBSan
==========================
$ cd tools/perf
$ make DESTDIR=/usr
$ make DESTDIR=/usr install
AddressSanitizer (or ASan) is a GCC feature that detects memory corruption bugs
such as buffer overflows and memory leaks.
$ cd tools/perf
$ make DEBUG=1 EXTRA_CFLAGS='-fno-omit-frame-pointer -fsanitize=address'
$ ASAN_OPTIONS=log_path=asan.log ./perf record -a
ASan outputs all detected issues into a log file named 'asan.log.<pid>'.
UndefinedBehaviorSanitizer (or UBSan) is a fast undefined behavior detector
supported by GCC. UBSan detects undefined behaviors of programs at runtime.
$ cd tools/perf
$ make DEBUG=1 EXTRA_CFLAGS='-fno-omit-frame-pointer -fsanitize=undefined'
$ UBSAN_OPTIONS=print_stacktrace=1 ./perf record -a
If UBSan detects any problem at runtime, it outputs a “runtime error:” message.