linux-kernel - Re: [PATCH 0/5] perf tools: Pipe fixes

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Date:   Thu, 7 May 2020 12:49:17 -0300
From:   Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
To:     Jiri Olsa <jolsa@...nel.org>
Cc:     lkml <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Michael Petlan <mpetlan@...hat.com>,
        Ian Rogers <irogers@...gle.com>, Paul Khuong <pvk@....ca>
Subject: Re: [PATCH 0/5] perf tools: Pipe fixes

Em Thu, May 07, 2020 at 11:50:19AM +0200, Jiri Olsa escreveu:
> hi,
> sending changes that allows callchain detection in pipe mode,
> fixing followign use case:
> 
>   # perf record --no-buffering --call-graph dwarf -e sdt_rtld:init_start -a -o - | perf --no-pager script -i -
> 
> plus change that allows to read pipe data from file:
> 
>   # perf record -o - sleep 1 > /tmp/perf.pipe.data
>   # perf report -i /tmp/perf.pipe.data
> 
> plus unrelated build fix.
> 
> Also reachable in here:
>   git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git
>   perf/pipe

Thanks a lot, all tested, great improvements for pipe mode!

- Arnaldo
 
> thanks,
> jirka
> 
> 
> ---
> Jiri Olsa (5):
>       perf tools: Do not display extra info when there is nothing to build
>       perf tools: Do not seek in pipe fd during tracing data processing
>       perf session: Try to read pipe data from file
>       perf tools: Setup callchain properly in pipe mode
>       perf script: Enable IP fields for callchains
> 
>  tools/perf/Makefile.perf    |  8 +++++---
>  tools/perf/builtin-report.c | 33 ++++++++++++++++++++++-----------
>  tools/perf/builtin-script.c | 23 +++++++++++++++++++----
>  tools/perf/util/callchain.c | 14 ++++++++++++++
>  tools/perf/util/callchain.h |  1 +
>  tools/perf/util/header.c    | 34 ++++++++++++++++++++++++++--------
>  tools/perf/util/session.c   |  9 +++++++--
>  7 files changed, 94 insertions(+), 28 deletions(-)
> 

-- 

- Arnaldo