linux-kernel - Re: [PATCH 3/3] perf target: Add need

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Message-ID: <20120516155000.GF7864@infradead.org>
Date:	Wed, 16 May 2012 12:50:01 -0300
From:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
To:	David Ahern <dsahern@...il.com>
Cc:	Namhyung Kim <namhyung.kim@....com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Ingo Molnar <mingo@...hat.com>,
	Namhyung Kim <namhyung@...il.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/3] perf target: Add need_mmap field

Em Wed, May 16, 2012 at 09:32:37AM -0600, David Ahern escreveu:
> On 5/16/12 9:28 AM, Arnaldo Carvalho de Melo wrote:
> >Em Wed, May 16, 2012 at 06:45:49PM +0900, Namhyung Kim escreveu:
> >>If perf doesn't mmap on event (like perf stat), it
> >>should not create per-task-per-cpu events. So just
> >>use a dummy cpu map to create a per-task event for
> >>this case.
> >
> >Humm, perhaps target.no_mmap is better? I.e. just perf-stat would set
> >it.
> >
> 
> That gets back to the potential double negation Ingo frowns upon (!no_mmap).

Ok, but this really doesn't feel like a good name :-\ Short of ideas
now tho.

- Arnaldo
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