linux-kernel - Re: [PATCH 3/3] cpuset: fix possible deadlock in async_rebuild_sched

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Message-ID: <4973DA08.9050207@cn.fujitsu.com>
Date:	Mon, 19 Jan 2009 09:40:24 +0800
From:	Lai Jiangshan <laijs@...fujitsu.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Andrew Morton <akpm@...ux-foundation.org>, menage@...gle.com,
	miaox@...fujitsu.com, maxk@...lcomm.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] cpuset: fix possible deadlock in	async_rebuild_sched_domains

Ingo Molnar wrote:
> 
> Can you measure any overhead from that? In any case, this is triggered on 
> admin activities (when reconfiguring cpusets), so it's a slowpath and thus 
> using existing infrastructure is preferred in the 99.9% of the cases. 
> 
>

I thought creating a thread waste some memory, the thread
is sleep at most time.

Thanks, Ingo.


Paul and Andrew:
Could you applied Miao's patch, this is a urgent bugfix.

Lai.

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