linux-kernel - Re: [PATCH 1/3] perf: add context field to perf

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Message-ID: <1310462046.14978.11.camel@twins>
Date:	Tue, 12 Jul 2011 11:14:06 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Avi Kivity <avi@...hat.com>
Cc:	Will Deacon <will.deacon@....com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"kvm@...r.kernel.org" <kvm@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>,
	"acme@...stprotocols.net" <acme@...stprotocols.net>,
	Jason Wessel <jason.wessel@...driver.com>
Subject: Re: [PATCH 1/3] perf: add context field to perf_event

On Tue, 2011-07-12 at 12:08 +0300, Avi Kivity wrote:
> Similar, but with stronger guarantees: when the function is called, 
> current == p, and the task was either sleeping or in userspace. 

If the task is sleeping, current can never be p.
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