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SubjectRe: [PATCH V2 0/9] perf symbols: Improve dso__synthesize_plt_symbols() for x86
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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