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Date: Wed, 19 Nov 2008 08:53:19 +0100 From: Ingo Molnar <mingo@...e.hu> To: Ken Chen <kenchen@...gle.com> Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: Re: [patch] sched: add locking when update the task_group's cfs_rq[] array. * Ken Chen <kenchen@...gle.com> wrote: > @@ -1513,8 +1513,12 @@ static int tg_shares_up > unsigned long weight, rq_weight = 0; > unsigned long shares = 0; > struct sched_domain *sd = data; > + unsigned long flags; > int i; > > + if (!spin_trylock_irqsave(&tg->tg_lock, flags)) > + return 0; hm, why trylock? Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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