Subject: Re: Help needed: Resume problems in 2.6.32-rc, perhaps related to
 preempt_count leakage in keventd
From: Mike Galbraith <efault@gmx.de>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>,
       LKML <linux-kernel@vger.kernel.org>,
       pm list <linux-pm@lists.linux-foundation.org>, Greg KH <gregkh@suse.de>,
       Linus Torvalds <torvalds@linux-foundation.org>,
       Jesse Barnes <jbarnes@virtuousgeek.org>
In-Reply-To: <200911091647.54171.rjw@sisk.pl>
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	 <1257777040.6365.15.camel@marge.simson.net>
	 <200911091647.54171.rjw@sisk.pl>
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Date: Mon, 09 Nov 2009 17:19:13 +0100
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On Mon, 2009-11-09 at 16:47 +0100, Rafael J. Wysocki wrote:
> On Monday 09 November 2009, Mike Galbraith wrote:

> > > Very likely.  What did you do to fix it?
> > 
> > You don't really wanna know.  In 31 with newidle enabled, the below
> > fixed it.  It won't fix 32, though it might cure the resume problem.
> 
> OK, I'll give it a try.

I just tried to trigger badness via high speed online/offline combined
with taskset with CONFIG_PREEMPT enabled, and couldn't make it explode.

(damn, wish i could s2ram this box)

	-Mike

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