linux-kernel - Re: [BUG 2.6.25-rc3] scheduler/hotplug: some processes are dealocked when cpu is set to offline

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Date:	Fri, 7 Mar 2008 15:29:34 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Suresh Siddha <suresh.b.siddha@...el.com>
Cc:	rjw@...k.pl, dmitry.adamushko@...il.com, ego@...ibm.com,
	mingo@...e.hu, oleg@...sign.ru, yi.y.yang@...el.com,
	linux-kernel@...r.kernel.org, tglx@...utronix.de
Subject: Re: [BUG 2.6.25-rc3] scheduler/hotplug: some processes are
 dealocked when cpu is set to offline

On Fri, 7 Mar 2008 15:01:26 -0800
Suresh Siddha <suresh.b.siddha@...el.com> wrote:

> 
> Andrew, Please check if the appended patch fixes your power-off problem aswell.
> ...
>
> --- a/kernel/sched.c
> +++ b/kernel/sched.c
> @@ -5882,6 +5882,7 @@ migration_call(struct notifier_block *nfb, unsigned long action, void *hcpu)
>  		break;
>  
>  	case CPU_DOWN_PREPARE:
> +	case CPU_DOWN_PREPARE_FROZEN:
>  		/* Update our root-domain */
>  		rq = cpu_rq(cpu);
>  		spin_lock_irqsave(&rq->lock, flags);

No, it does not.
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