linux-kernel - Re: [PATCH] perf lock: clean the options for perf record

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Message-ID: <AANLkTikUGO=Obm7Ue4VzEueQ7DERPiwci1VV9NmKZf1u@mail.gmail.com>
Date:	Tue, 1 Mar 2011 15:55:43 +0100
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Hitoshi Mitake <mitake@....info.waseda.ac.jp>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	linux-kernel@...r.kernel.org, h.mitake@...il.com,
	Paul Mackerras <paulus@...ba.org>, Ingo Molnar <mingo@...e.hu>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [PATCH] perf lock: clean the options for perf record

On Sat, Feb 26, 2011 at 02:10:30AM +0900, Hitoshi Mitake wrote:
> It seems that I was too preprocessed with the method and
> forgot the purpose...
>
> Maybe the things like simple lockstat visualizer or
> special diff between two lockstat snapshots are
> useful for the first looking at big picture.
> I feel that they have worth to write and test.

Indeed they sound like good ideas. Being able to do a diff
on locks profiles would be useful to compare two changes on
the kernel.
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