linux-kernel - Re: [patch 13/19] GTOD: Mark TSC unusable for highres timers

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Message-Id: <200611101130.51528.ak@suse.de>
Date:	Fri, 10 Nov 2006 11:30:51 +0100
From:	Andi Kleen <ak@...e.de>
To:	Arjan van de Ven <arjan@...radead.org>
Cc:	john stultz <johnstul@...ibm.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...l.org>,
	LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>,
	Len Brown <lenb@...nel.org>,
	Roman Zippel <zippel@...ux-m68k.org>
Subject: Re: [patch 13/19] GTOD: Mark TSC unusable for highres timers

On Friday 10 November 2006 11:28, Arjan van de Ven wrote:
> On Fri, 2006-11-10 at 06:10 +0100, Andi Kleen wrote:
> > Very sad. This will make a lot of people unhappy, even to the point
> > where they might prefer disabling noidlehz over super slow gettimeofday. 
> > I assume you at least have a suitable command line option for that, right?
> > 
> > Can we get a summary on which systems the TSC is considered unstable?
> 
> the part where it stops in idle...

That is handled by if (intel && C3 available) disable

-Andi
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