linux-kernel - Re: CPU offline/online related hang with latest git

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Date:	Sun, 20 Dec 2009 15:51:51 +0100
From:	Jens Axboe <jens.axboe@...cle.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Sachin Sant <sachinp@...ibm.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Subject: Re: CPU offline/online related hang with latest git

On Sun, Dec 20 2009, Peter Zijlstra wrote:
> On Sun, 2009-12-20 at 15:34 +0530, Sachin Sant wrote:
> > With 2.6.33-rc1-git1 (dd59f6c..) i am having trouble with
> > CPU hotplug on multiple architectures. Trying to offline
> > a CPU results in a machine hang.
> 
> damnit, you're right.. it's getting stuck during hotplug on stop machine
> some place.
> 
> didn't notice it because it didn't crash.. 
> 
> sorry for that :-(

Perhaps this is also why suspend doesn't work on current -git... -rc1 is
fine.

-- 
Jens Axboe

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