linux-kernel - Re: [PATCH 2/2] [S390] irq: fix show

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Message-ID: <20110727060605.GB2561@osiris.boeblingen.de.ibm.com>
Date:	Wed, 27 Jul 2011 08:06:05 +0200
From:	Heiko Carstens <heiko.carstens@...ibm.com>
To:	Yong Zhang <yong.zhang0@...il.com>
Cc:	linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org,
	Martin Schwidefsky <schwidefsky@...ibm.com>
Subject: Re: [PATCH 2/2] [S390] irq: fix show_interrupts() vs cpu hotplug

On Wed, Jul 27, 2011 at 12:56:23PM +0800, Yong Zhang wrote:
> The current usage of get_online_cpus()/put_online_cpus()
> in show_interrupts() is not correct since show_interrupts()
> will be called nr_irqs times, during that period, cpu hotplug
> could also happen.
> Since have moved the protection to upper(patch#1), the pair of
> get_online_cpus()/put_online_cpus() could be removed here.
> 
> Signed-off-by: Yong Zhang <yong.zhang0@...il.com>
> Cc: Martin Schwidefsky <schwidefsky@...ibm.com>
> Cc: Heiko Carstens <heiko.carstens@...ibm.com>

Acked-by: Heiko Carstens <heiko.carstens@...ibm.com>
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