linux-kernel - Re: clockevents: fix resume logic

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Message-Id: <20070911012005.4df3ddf4.akpm@linux-foundation.org>
Date:	Tue, 11 Sep 2007 01:20:05 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	john stultz <johnstul@...ibm.com>, Ingo Molnar <mingo@...e.hu>,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: clockevents: fix resume logic

On Tue, 11 Sep 2007 09:47:20 +0200 Thomas Gleixner <tglx@...utronix.de> wrote:

> On Tue, 2007-09-11 at 09:23 +0200, Thomas Gleixner wrote:
> > > I went back to the original patch which I sent to Linus and it matches
> > > 18de5bc4c1f1f1fa5e14f354a7603bd6e9d4e3b6.  So all I can think is that there
> > > must have been something else in the tree which I tested which fixed the
> > > bug which 18de5bc4c1f1f1fa5e14f354a7603bd6e9d4e3b6 introduced.  argh.
> > > 
> > > Can you think what would cause the symptoms which I described?  
> > 
> > It seems that time is not updated. Timer interrupt not active or some
> > other odd thing. I figure out what's going on when I find a box which
> > exposes the problem.

2.6.22-rc6-mm1's git-acpi.patch contains something which fixes this bug. 
It's a quarter megabyte :( Presumably clockevents-fix-resume-logic.patch
depended on something which was in that git-acpi.patch but which for some
reason didn't get merged.  Ho hum, I'll take a look, see if I can spot it.

> Can you please try the following command line options:
> 
> nolapic_timer

Works

> nohz=off

Fails


> highres=off

Fails

> nohz=off highres=off

Works
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