linux-kernel - Re: [RFC -v3 PATCH 2/3] sched: add yield

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Message-ID: <1294247065.2016.267.camel@laptop>
Date:	Wed, 05 Jan 2011 18:04:25 +0100
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Mike Galbraith <efault@....de>
Cc:	Rik van Riel <riel@...hat.com>, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org, Avi Kiviti <avi@...hat.com>,
	Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>,
	Chris Wright <chrisw@...s-sol.org>
Subject: Re: [RFC -v3 PATCH 2/3] sched: add yield_to function

On Wed, 2011-01-05 at 17:57 +0100, Mike Galbraith wrote:
> +               p_cfs_rq = cfs_rq_of(pse);
> +               local = 1;
> +       }
> +#endif
> +
> +       /* Tell the scheduler that we'd really like pse to run next. */
> +       p_cfs_rq->next = pse;
> +
> +       /* We know whether we want to preempt or not, but are we allowed? */
> +       preempt &= same_thread_group(p, task_of(p_cfs_rq->curr));
> +
> +       if (local)
> +               clear_buddies(cfs_rq, se); 

You might want to clear before setting next :-)
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