linux-kernel - Re: [PATCH 0/3] perf tools: Tidy up symbol end fixup (v3)

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Message-ID: <YmqcHFtVTfvCCbTW@kernel.org>
Date:   Thu, 28 Apr 2022 10:52:28 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Ian Rogers <irogers@...gle.com>
Cc:     Namhyung Kim <namhyung@...nel.org>, Jiri Olsa <jolsa@...hat.com>,
        Michael Petlan <mpetlan@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...nel.org>,
        Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
        Song Liu <songliubraving@...com>,
        Will Deacon <will@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        John Garry <john.garry@...wei.com>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Leo Yan <leo.yan@...aro.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Heiko Carstens <hca@...ux.ibm.com>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-perf-users@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-s390@...r.kernel.org
Subject: Re: [PATCH 0/3] perf tools: Tidy up symbol end fixup (v3)

Em Mon, Apr 25, 2022 at 01:59:03PM -0700, Ian Rogers escreveu:
> On Fri, Apr 15, 2022 at 5:40 PM Namhyung Kim <namhyung@...nel.org> wrote:
> >
> > Hello,
> >
> > This work is a follow-up of Ian's previous one at
> >   https://lore.kernel.org/all/20220412154817.2728324-1-irogers@google.com/
> >
> > Fixing up more symbol ends as introduced in:
> >   https://lore.kernel.org/lkml/20220317135536.805-1-mpetlan@redhat.com/
> >
> > it caused perf annotate to run into memory limits - every symbol holds
> > all the disassembled code in the annotation, and so making symbols
> > ends further away dramatically increased memory usage (40MB to >1GB).
> >
> > Modify the symbol end fixup logic so that special kernel cases aren't
> > applied in the common case.
> >
> > v3 changes)
> >  * rename is_kernel to is_kallsyms
> >  * move the logic to generic function
> >  * remove arch-specific functions
> >
> > Thanks,
> > Namhyung
> 
> Thanks Namhyung! The series:
> 
> Acked-by: Ian Rogers <irogers@...gle.com>

Thanks, applied to perf/urgent.

- Arnaldo

 
> > Namhyung Kim (3):
> >   perf symbol: Pass is_kallsyms to symbols__fixup_end()
> >   perf symbol: Update symbols__fixup_end()
> >   perf symbol: Remove arch__symbols__fixup_end()
> >
> >  tools/perf/arch/arm64/util/machine.c   | 21 ---------------
> >  tools/perf/arch/powerpc/util/Build     |  1 -
> >  tools/perf/arch/powerpc/util/machine.c | 25 -----------------
> >  tools/perf/arch/s390/util/machine.c    | 16 -----------
> >  tools/perf/util/symbol-elf.c           |  2 +-
> >  tools/perf/util/symbol.c               | 37 +++++++++++++++++++-------
> >  tools/perf/util/symbol.h               |  3 +--
> >  7 files changed, 29 insertions(+), 76 deletions(-)
> >  delete mode 100644 tools/perf/arch/powerpc/util/machine.c
> >
> >
> > base-commit: 41204da4c16071be9090940b18f566832d46becc
> > --
> > 2.36.0.rc0.470.gd361397f0d-goog
> >

-- 

- Arnaldo