linux-kernel - Re: [PATCH 1/3] perf sort: Add 'addr' sort key

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Date:	Tue, 26 Mar 2013 15:40:23 +0100
From:	Ingo Molnar <mingo@...nel.org>
To:	Namhyung Kim <namhyung@...nel.org>
Cc:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Namhyung Kim <namhyung.kim@....com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/3] perf sort: Add 'addr' sort key


* Namhyung Kim <namhyung@...nel.org> wrote:

> From: Namhyung Kim <namhyung.kim@....com>
> 
> New addr sort key provides a way to sort the entries by the symbol
> addresses.

No objections from me - just wondering about the motivation: why would we 
want to sort by symbol address?

Perhaps to see the overhead layout/distribution within a DSO, to better 
cache-pack hot functions by placing them next to each other?

Putting a short usecase into the changelog (or even better, the 
documentation) would be nice.

Thanks,

	Ingo
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