linux-kernel - Re: Help needed: Resume problems in 2.6.32-rc, perhaps related to preempt

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Message-Id: <1257783553.6408.6.camel@marge.simson.net>
Date:	Mon, 09 Nov 2009 17:19:13 +0100
From:	Mike Galbraith <efault@....de>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
	LKML <linux-kernel@...r.kernel.org>,
	pm list <linux-pm@...ts.linux-foundation.org>,
	Greg KH <gregkh@...e.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Jesse Barnes <jbarnes@...tuousgeek.org>
Subject: Re: Help needed: Resume problems in 2.6.32-rc, perhaps related to
 preempt_count leakage in keventd

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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