linux-kernel - Re: [PATCH v2 0/5] perf tools: add meta-data header support in pipe mode

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Date:	Wed, 16 May 2012 11:50:05 +0900
From:	Namhyung Kim <namhyung.kim@....com>
To:	David Ahern <dsahern@...il.com>
Cc:	Stephane Eranian <eranian@...gle.com>,
	linux-kernel@...r.kernel.org, peterz@...radead.org, mingo@...e.hu,
	acme@...hat.com
Subject: Re: [PATCH v2 0/5] perf tools: add meta-data header support in pipe mode

Hi,

On Tue, 15 May 2012 20:38:05 -0600, David Ahern wrote:
> See tools/perf/util/header.{ch}
> Runtime example:
>
> perf script -i /tmp/perf.data -I
>
> # ========
> # captured on: Tue May 15 20:22:15 2012
> # ========
> #
> # hostname : nxos-vdc-dev3
> # os release : 3.4.0-rc7+
> # perf version : 3.4.rc4.137.g978da3.dirty
> # arch : x86_64
> # nrcpus online : 16
> # nrcpus avail : 16
> # cpudesc : Intel(R) Xeon(R) CPU E5540 @ 2.53GHz
> # cpuid : GenuineIntel,6,26,5
> # total memory : 24680324 kB
> # cmdline : /tmp/pbuild/perf record -fo /tmp/perf.data -- /tmp/noploop
>
> ...
>
> 'perf report --stdio' also shows it. It gets lost in the TUI.
>

Yeah, I know. What I mean is keeping the info in memory after parsing a 
perf.data file so that it can be used for displaying it on a dialog in
perf report TUI (on demand) or checking arch before annotation or ...

Thanks,
Namhyung
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