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| author | Vasily Gorbik <gor@linux.ibm.com> | 2025-04-02 04:15:35 +0300 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2025-04-02 16:51:26 +0300 |
| commit | 023f124a64174c47e18340ded7e2a39b96eb9523 (patch) | |
| tree | d8019306c594cebf18c1cfdf8ca2bd125ad2f346 /tools/perf/scripts/python/export-to-sqlite.py | |
| parent | ea8d7647f9ddf1f81e2027ed305299797299aa03 (diff) | |
| download | linux-023f124a64174c47e18340ded7e2a39b96eb9523.tar.xz | |
scripts/sorttable: Fix endianness handling in build-time mcount sort
Kernel cross-compilation with BUILDTIME_MCOUNT_SORT produces zeroed
mcount values if the build-host endianness does not match the ELF
file endianness.
The mcount values array is converted from ELF file
endianness to build-host endianness during initialization in
fill_relocs()/fill_addrs(). Avoid extra conversion of these values during
weak-function zeroing; otherwise, they do not match nm-parsed addresses
and all mcount values are zeroed out.
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Link: https://lore.kernel.org/patch.git-dca31444b0f1.your-ad-here.call-01743554658-ext-8692@work.hours
Fixes: ef378c3b8233 ("scripts/sorttable: Zero out weak functions in mcount_loc table")
Reported-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reported-by: Ihor Solodrai <ihor.solodrai@linux.dev>
Closes: https://lore.kernel.org/all/your-ad-here.call-01743522822-ext-4975@work.hours/
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'tools/perf/scripts/python/export-to-sqlite.py')
0 files changed, 0 insertions, 0 deletions