linux-kernel - Re: [PATCH 4/5] perf tools: Introduce new -P/--parent-deep report option

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Date:	Wed, 26 Jun 2013 11:53:30 +0900
From:	Namhyung Kim <namhyung@...nel.org>
To:	Jiri Olsa <jolsa@...hat.com>
Cc:	linux-kernel@...r.kernel.org,
	Corey Ashford <cjashfor@...ux.vnet.ibm.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...e.hu>, Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Andi Kleen <ak@...ux.intel.com>,
	David Ahern <dsahern@...il.com>,
	Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH 4/5] perf tools: Introduce new -P/--parent-deep report option

Hi Jiri,

On Tue, 25 Jun 2013 13:54:12 +0200, Jiri Olsa wrote:
> Introducing new -P/--parent-deep report option. It does the
> same as '-p' but it force the deep search of the callchain
> and looks for the deepest possible match.
>
> The -p option searches for the first match of the parent
> pattern in the callchain.
>
>   $ perf report -i perf.data.delete -p perf_session__delete -s parent
>
>   +  99.51%  [other]
>   +   0.46%  perf_session__delete_dead_threads
>   +   0.03%  perf_session__delete
>   +   0.00%  perf_session__delete_threads
>
> so we got multiple 'different' matches instancies, while
> they all belong under perf_session__delete function:
>
>   $ perf report -i perf.data.delete -P perf_session__delete -s parent
>
>   +  99.51%  [other]
>   +   0.49%  perf_session__delete
>
> NOTE the 'p' vs 'P' difference in above commands above.

I guess using --inverted (-G) option with -p does the job.

Thanks,
Namhyung
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