linux-kernel - Re: [RFC PATCH 1/2] perf: Enable group siblings on exec if attr::enable_on

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Date:	Wed, 10 Nov 2010 15:54:42 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Lin Ming <ming.m.lin@...el.com>
Cc:	Ingo Molnar <mingo@...e.hu>, Matt Fleming <matt@...sole-pimps.org>,
	"Zhang, Rui" <rui.zhang@...el.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	lkml <linux-kernel@...r.kernel.org>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: Re: [RFC PATCH 1/2] perf: Enable group siblings on exec if
 attr::enable_on_exec set

On Wed, 2010-11-10 at 22:49 +0800, Lin Ming wrote:
> > I don't mind the patch too much (although I would like to avoid that
> > double sibling iteration in both group_enable_on_exec() and
> > __perf_event_mark_enabled()), but I think it can already work as is.
> 
> I got it now!
> 
> Another stupid patch, sorry. 

Well, I wouldn't call it a stupid patch, it does fix something that is
evidently non-obvious so it might be worth considering it on that merit.

I'm simply pointing out that what you're trying to achieve might be
possible without changing code.

 
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