linux-kernel - Re: [patch 3/3] clockevents: Fix resume logic

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Message-Id: <20070513153555.7f7dc350.akpm@linux-foundation.org>
Date:	Sun, 13 May 2007 15:35:55 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	tglx@...utronix.de, "Rafael J. Wysocki" <rjw@...k.pl>,
	LKML <linux-kernel@...r.kernel.org>,
	John Stultz <johnstul@...ibm.com>, linux-acpi@...r.kernel.org
Subject: Re: [patch 3/3] clockevents: Fix resume logic - updated version

On Sun, 13 May 2007 22:07:39 +0200 Ingo Molnar <mingo@...e.hu> wrote:

> 
> * Andrew Morton <akpm@...ux-foundation.org> wrote:
> 
> > Yeah, I expect quite a few people will start seeing that.  iirc it was 
> > triggered by a couple of changes: a local_irq_save/local_irq_restore 
> > in sched_clock() and a change Jeremy made to the softlockup detector.
> 
> hm, i specifically asked to not do local_irq_save/restore in 
> sched_clock(). It's the _scheduler_ clock and it very absolutely 
> positively needs no flags save/restore.
> 

It got taken out again.

It doesn't matter though: a local_irq_save/restore in some callee shouldn't
cause the locking API tests to break.  And they're apparently now breaking
without that local_irq_save/restore in there anyway.

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