linux-kernel - Re: disabling group leader perf

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Message-ID: <1283772256.1930.303.camel@laptop>
Date:	Mon, 06 Sep 2010 13:24:16 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Avi Kivity <avi@...hat.com>
Cc:	linux-perf-users@...r.kernel.org,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: disabling group leader perf_event

On Mon, 2010-09-06 at 12:12 +0300, Avi Kivity wrote:
> If I read the code correctly, disabling a group leader perf_event will 
> disable the entire group.
> 
> Is this correct?

Yeah, pretty much.

> If so, how can I disable just the event itself?  Can I allocate a dummy 
> invent for the group leader so I can enable and disable each perf_event 
> in the group individually?

Which makes me wonder why you use groups in the first place.
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