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

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Message-Id: <1178989302.22481.185.camel@localhost.localdomain>
Date:	Sat, 12 May 2007 19:01:41 +0200
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>, Ingo Molnar <mingo@...e.hu>,
	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 Sat, 2007-05-12 at 09:51 -0700, Andrew Morton wrote:
> The locking in clocksource_resume_watchdog looks pretty pointless anyway.
> Can't we just delete it?
> 
> The only thing it can race against is, conceivably,
> 
>         resumed = watchdog_resumed;
>         if (unlikely(resumed))
>                 watchdog_resumed = 0;
> 
> which could be solved by using test_and_clear_bit().

True. I'll redo it.

> Does anyone have any theories about my lockdep warning?

Can you upload a snapshot of your current queue ?

	tglx



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