linux-kernel - Re: [PATCH 1/2] proc/insterrupts: make it cpu hotplug safe

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Date:	Wed, 27 Jul 2011 08:05:45 +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,
	Andrew Morton <akpm@...ux-foundation.org>,
	Keika Kobayashi <kobayashi.kk@...s.nec.co.jp>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Subject: Re: [PATCH 1/2] proc/insterrupts: make it cpu hotplug safe

On Wed, Jul 27, 2011 at 12:56:22PM +0800, Yong Zhang wrote:
> KOSAKI Motonhiro noticed that the reader of /proc/interrupts
> could be preempted by cpu hotplug, thus the reader can get
> broken result due to show_interrupts() iterate every online
> cpu without any protection.
> 
> Signed-off-by: Yong Zhang <yong.zhang0@...il.com>
> Cc: Andrew Morton <akpm@...ux-foundation.org>
> Cc: Keika Kobayashi <kobayashi.kk@...s.nec.co.jp>
> Cc: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
> Cc: Heiko Carstens <heiko.carstens@...ibm.com>

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