linux-kernel - Re: [PATCH 00/10] perf symbols: Improve dso__synthesize_plt

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Date:   Sun, 22 Jan 2023 18:11:40 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Ian Rogers <irogers@...gle.com>
Cc:     Adrian Hunter <adrian.hunter@...el.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org
Subject: Re: [PATCH 00/10] perf symbols: Improve dso__synthesize_plt_symbols()

Em Sat, Jan 21, 2023 at 09:53:53AM -0800, Ian Rogers escreveu:
> On Fri, Jan 20, 2023 at 4:35 AM Adrian Hunter <adrian.hunter@...el.com> wrote:
> >
> > 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".
> >
> >
> > 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
 
> Acked-by: Ian Rogers <irogers@...gle.com>

Thanks, added to the tested patches, will push to perf/core shortly.

- Arnaldo