linux-kernel - Re: [PATCH -rt 4/5] workqueue: hotplug fix

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Date:	Mon, 24 Oct 2011 11:25:46 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Yong Zhang <yong.zhang0@...il.com>
cc:	linux-kernel@...r.kernel.org, linux-rt-users@...r.kernel.org
Subject: Re: [PATCH -rt 4/5] workqueue: hotplug fix

On Mon, 24 Oct 2011, Yong Zhang wrote:
> On Wed, Oct 19, 2011 at 09:14:28AM +0200, Thomas Gleixner wrote:
> > > -	spin_unlock_irqrestore(&gcwq->lock, flags);
> > 
> > This part of the patch is pretty pointless.
> 
> But CPU_STARTING is called with irq disabled, and it will take
> the lock unconditionally. Thus below warning is triggered:

Aarg, yes.

Thanks,

	tglx
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