linux-kernel - Re: [PATCH -tip v2 2/6] perf bts: Introduce new sub command 'perf bts trace'

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Date:	Tue, 21 Dec 2010 19:40:32 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Frederic Weisbecker <fweisbec@...il.com>
Cc:	Akihiro Nagai <akihiro.nagai.hw@...achi.com>,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	2nddept-manager@....hitachi.co.jp,
	Paul Mackerras <paulus@...ba.org>
Subject: Re: [PATCH -tip v2 2/6] perf bts: Introduce new sub command 'perf
 bts trace'

On Tue, 2010-12-21 at 19:31 +0100, Frederic Weisbecker wrote:
> Actually the best would be to select PERF_SAMPLE_ID in the sample_type
> on record and also PERF_FORMAT_ID in the read_format.

That would grow the data size for little gain, as long as you only
record BTS data into the buffer the current bits should work fine.
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