linux-kernel - Re: [patch] Re: nohz and strange sleep latencies

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Message-ID: <alpine.LFD.0.9999.0711252239070.26417@localhost.localdomain>
Date:	Sun, 25 Nov 2007 22:42:28 +0100 (CET)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Pavel Machek <pavel@....cz>
cc:	Ingo Molnar <mingo@...e.hu>,
	kernel list <linux-kernel@...r.kernel.org>
Subject: Re: [patch] Re: nohz and strange sleep latencies

On Sun, 25 Nov 2007, Pavel Machek wrote:
> Hi!
> 
> Okay, so the problem seems to be we are using unreliable lapic
> timer... which is stopped in C3 (and in C2 on broken machines).
> 
> I do not see any mechanism to disable lapic; there seems to be some
> mechanism to work around stopped lapic timer is used (in
> acpi/processor_idle.c) but it does not seem to work. So what about
> this?

nolapic_timer on 32bit
noapictimer on 64bit 

Sigh, I know that sucks, but it's the history of the diverged trees.

      tglx
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