linux-kernel - Re: [patch] sched: fix/add missing update_rq

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Message-ID: <1258023705.4039.103.camel@laptop>
Date:	Thu, 12 Nov 2009 12:01:45 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Mike Galbraith <efault@....de>
Cc:	Ingo Molnar <mingo@...e.hu>, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [patch] sched: fix/add missing update_rq_clock() calls

On Thu, 2009-11-12 at 11:07 +0100, Mike Galbraith wrote:
> sched: fix/add missing update_rq_clock() calls.
> 
> kthread_bind(), migrate_task() and sched_fork were missing updates, and
> try_to_wake_up() was updating after having already used the stale clock.


I'm almost at the point where I think we should ditch rq->clock
alltogether and simply call cpu_clock() directly when we need it. This
trying to optimize and avoid calling it game has brought way too many
head-aches.

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