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Message-ID: <Y8qhE6Sd66l8Coaj@kernel.org>
Date: Fri, 20 Jan 2023 11:11:31 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Adrian Hunter <adrian.hunter@...el.com>
Cc: Jiri Olsa <jolsa@...hat.com>, Namhyung Kim <namhyung@...nel.org>,
Ian Rogers <irogers@...gle.com>, linux-kernel@...r.kernel.org,
linux-perf-users@...r.kernel.org
Subject: Re: [PATCH 00/10] perf symbols: Improve dso__synthesize_plt_symbols()
Em Fri, Jan 20, 2023 at 02:34:46PM +0200, Adrian Hunter escreveu:
> Hi
>
> This is the first of 2 patchsets to improve dso__synthesize_plt_symbols().
> This patchset is really preparation for the 2nd patchset, which focuses
> on getting rid of unknown symbols that show up in Intel PT traces.
> The 2nd patchset is still under development.
>
> These patches are small and staightforward. Only the new Symbols test is
> slightly interesting because it provides a way to see what symbols
> perf discovers for any given dso. The test fails initially, but
> should pass after patch 7 "perf symbols: Add symbol for .plt header".
Looks nice, I've test build, one by one and used the test with a
different --dso, etc. I'll keep it today locally for further container
tests and to give time to others to look at it, I'll have it in
tmp.perf/core soon.
- Arnaldo
>
> Adrian Hunter (10):
> perf test: Add Symbols test
> perf symbols: Factor out get_plt_sizes()
> perf symbols: Check plt_entry_size is not zero
> perf symbols: Add dso__find_symbol_nocache()
> perf symbols: Slightly simplify 'err' usage in dso__synthesize_plt_symbols()
> perf symbols: Do not check ss->dynsym twice
> perf symbols: Add symbol for .plt header
> perf symbols: Allow for .plt entries with no symbol
> perf symbols: Combine handling for SHT_RELA and SHT_REL
> perf symbols: Check SHT_RELA and SHT_REL type earlier
>
> tools/perf/Documentation/perf-test.txt | 3 +
> tools/perf/tests/Build | 1 +
> tools/perf/tests/builtin-test.c | 3 +
> tools/perf/tests/symbols.c | 150 ++++++++++++++++++++++++++
> tools/perf/tests/tests.h | 3 +
> tools/perf/util/symbol-elf.c | 190 +++++++++++++++++----------------
> tools/perf/util/symbol.c | 5 +
> tools/perf/util/symbol.h | 1 +
> 8 files changed, 262 insertions(+), 94 deletions(-)
> create mode 100644 tools/perf/tests/symbols.c
>
>
> Regards
> Adrian
--
- Arnaldo
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