Messages in this thread | | | From | Namhyung Kim <> | Date | Tue, 31 Jan 2023 22:59:58 -0800 | Subject | Re: [PATCH V2 0/9] perf symbols: Improve dso__synthesize_plt_symbols() for x86 |
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Hi Adrian,
On Tue, Jan 31, 2023 at 5:16 AM Adrian Hunter <adrian.hunter@intel.com> wrote: > > Hi > > This is version 2 of the second of 2 patchsets to improve > dso__synthesize_plt_symbols(). > This patchset focuses on getting rid of unknown symbols that show up in > Intel PT traces. > > x86 has 2 more plt's, namely .plt.sec and .plt.got, so support is added for > synthesizing symbols for them. Special handing is needed for IFUNC symbols, > and it is also possible to have a .plt for static executables, so support is > added for that. > > > Changes in V2: > > perf symbols: Add support for x86 .plt.sec > Amend commit message and example about -z plt > > perf symbols: Get symbols for .plt.got for x86-64 > Fix get_plt_got_name() not to segfault with EM_386 > > > Adrian Hunter (9): > perf symbols: Correct plt entry sizes for x86 > perf symbols: Add support for x86 .plt.sec > perf symbols: Sort plt relocations for x86 > perf symbols: Record whether a symbol is an alias for an IFUNC symbol > perf symbols: Add support for IFUNC symbols for x86_64 > perf symbols: Allow for .plt without header > perf symbols: Allow for static executables with .plt > perf symbols: Start adding support for .plt.got for x86 > perf symbols: Get symbols for .plt.got for x86-64
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Thanks, Namhyung
> > tools/perf/util/symbol-elf.c | 365 ++++++++++++++++++++++++++++++++++++++++--- > tools/perf/util/symbol.c | 4 + > tools/perf/util/symbol.h | 2 + > tools/perf/util/symsrc.h | 1 + > 4 files changed, 350 insertions(+), 22 deletions(-) > > > Regards > Adrian
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