linux-kernel - Re: [PATCH v2 2/3] perf script: Print comm, fork and exit events also

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Message-ID: <528A21FA.1050309@gmail.com>
Date:	Mon, 18 Nov 2013 07:19:38 -0700
From:	David Ahern <dsahern@...il.com>
To:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Namhyung Kim <namhyung@...nel.org>
CC:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Ingo Molnar <mingo@...nel.org>,
	Namhyung Kim <namhyung.kim@....com>,
	LKML <linux-kernel@...r.kernel.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Jiri Olsa <jolsa@...hat.com>
Subject: Re: [PATCH v2 2/3] perf script: Print comm, fork and exit events
 also

On 11/18/13, 6:57 AM, Arnaldo Carvalho de Melo wrote:
> Em Mon, Nov 18, 2013 at 02:34:53PM +0900, Namhyung Kim escreveu:
>> If --show-task option is given, also print internal COMM, FORK and
>> EXIT events.  It would be helpful for debugging.
>
> Humm, --show-task-events is clearer albeit long :-\ With shell
> completion shouldn't be an issue tho.
>
> Also, can't we use: perf_event__fprintf_{mmap,comm,task}?

Good point. Those can be used to dump data after perf-script's 
sample_start. From a quick review it looks like perf_event__fprintf can 
be used rather than the lower fprintf_mmap functions.

David
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