linux-kernel - Re: [PATCH V3 06/11] perf record: Add an option to force per-cpu mmaps

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Message-ID: <20131108141328.GD30908@ghostprotocols.net>
Date:	Fri, 8 Nov 2013 11:13:28 -0300
From:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Jiri Olsa <jolsa@...hat.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
	David Ahern <dsahern@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Mike Galbraith <efault@....de>,
	Namhyung Kim <namhyung@...il.com>,
	Paul Mackerras <paulus@...ba.org>,
	Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH V3 06/11] perf record: Add an option to force per-cpu
 mmaps

Em Fri, Nov 08, 2013 at 09:40:01AM +0100, Peter Zijlstra escreveu:
> On Tue, Nov 05, 2013 at 02:31:52PM -0300, Arnaldo Carvalho de Melo wrote:
> > 	Can I have your Acked-by for this one? I guess now the goal is
> > achieved, no?
 
> So this option allows -t/-p/-u to create one buffer per cpu and attach
> all the various thread/process/user tasks' their counters to that one
> buffer?
 
> As opposed to the current state where each such counter would have its
> own buffer.
 
> If this is what the patch does, then yes, although I would prefer a
> slightly clearer Changelog.

/me too

I will re-read the patch to check that it matches what you think it does
and will update the changelog to make it clearer.
 
> Acked-by: Peter Zijlstra <peterz@...radead.org>

Thanks!

- Arnaldo
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