linux-kernel - Re: [RFC][PATCH 07/18] sched: Drop the rq argument to sched_class::select_task

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Date:	Thu, 06 Jan 2011 15:23:51 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Chris Mason <chris.mason@...cle.com>
Cc:	Frank Rowand <frank.rowand@...sony.com>,
	Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Mike Galbraith <efault@....de>,
	Oleg Nesterov <oleg@...hat.com>, Paul Turner <pjt@...gle.com>,
	Jens Axboe <axboe@...nel.dk>,
	Yong Zhang <yong.zhang0@...il.com>,
	linux-kernel@...r.kernel.org, Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [RFC][PATCH 07/18] sched: Drop the rq argument to
 sched_class::select_task_rq()

On Thu, 2011-01-06 at 14:57 +0100, Peter Zijlstra wrote:
> +       curr = rcu_dereference(rq->curr); /* unlocked access */

Hrm, I got my barriers wrong again, I think we can go with ACCESS_ONCE()
here.
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