linux-kernel - Re: [BUG] local_softirq

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Date:	Sun, 20 May 2007 15:52:21 +0200
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Heiko Carstens <heiko.carstens@...ibm.com>
Cc:	Anant Nitya <kernel@...chanda.info>, linux-kernel@...r.kernel.org,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [BUG] local_softirq_pending storm

On Sun, 2007-05-20 at 12:18 +0200, Heiko Carstens wrote:
> > I work out a more complex debug patch and pester you to test once I'm
> > done.
> 
> I've also tons of 'NOHZ: local_softirq_pending 08' that disappear with
> nohz=off. But I'm still running 2.6.21. Are there any patches that should
> fix this?
> Machine is a Lenovo T60p:
> 
> i686 Intel(R) Core(TM)2 CPU T7600  @ 2.33GHz GenuineIntel GNU/Linux

Hmm, that's a different problem than the 0x22 which shows up on
hyperthreading enabled P4 systems. Are you using plip ?

> Besides that I get a lot of clock skews on 'make headers_check', but
> these are unrelated to nohz:
> 
>   CHECK   include/asm/dasd.h
> make[2]: warning:  Clock skew detected.  Your build may be incomplete.
> make[2]: Warning: File `/dev/null' has modification time 5.1e+03 s in the future

Strange.

	tglx


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