From: Jens Axboe <jens.axboe@oracle.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Sachin Sant <sachinp@in.ibm.com>,
linux-kernel <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@elte.hu>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>
Subject: Re: CPU offline/online related hang with latest git
Date: Sun, 20 Dec 2009 15:57:15 +0100 [thread overview]
Message-ID: <20091220145715.GZ4489@kernel.dk> (raw)
In-Reply-To: <1261320896.4314.10.camel@laptop>
On Sun, Dec 20 2009, Peter Zijlstra wrote:
> On Sun, 2009-12-20 at 15:51 +0100, Jens Axboe wrote:
> > 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.
>
> Yep, suspend relies on hotplug.
Exactly, hence the connection. Shall I bisect, or do you already know
what the problem is?
--
Jens Axboe
next prev parent reply other threads:[~2009-12-20 14:57 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-20 10:04 CPU offline/online related hang with latest git Sachin Sant
2009-12-20 13:31 ` Peter Zijlstra
2009-12-20 14:51 ` Jens Axboe
2009-12-20 14:54 ` Peter Zijlstra
2009-12-20 14:57 ` Jens Axboe [this message]
2009-12-20 15:00 ` Peter Zijlstra
2009-12-20 16:36 ` [PATCH] sched: Fix hotplug Peter Zijlstra
2009-12-20 22:14 ` Jens Axboe
2009-12-20 22:33 ` [tip:sched/urgent] sched: Fix hotplug hang tip-bot for Peter Zijlstra
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