linux-kernel - Re: [PATCH] Re: AMD Mobile Semprons (3500+, 3600+,...) break with nohz and highres enabled

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Message-ID: <alpine.LFD.1.10.0807162100380.4316@apollo.tec.linutronix.de>
Date:	Wed, 16 Jul 2008 21:03:12 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Thomas Renninger <trenn@...e.de>
cc:	Ingo Molnar <mingo@...e.hu>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	"andreas.herrmann3" <andreas.herrmann3@....com>,
	Richard <tuxbox.guru@...il.com>, eumaster@...il.com,
	uli.geins@...ns-web.de
Subject: Re: [PATCH] Re: AMD Mobile Semprons (3500+, 3600+,...) break with
 nohz and highres enabled

On Wed, 16 Jul 2008, Thomas Renninger wrote:

> This is against Andi's (ak) release branch,
> hope that is ok...

No idea what that is.

> Can this one be reviewed/added, pls.

Reviewed yes. Added no.

>  kernel/time/tick-sched.c |   31 +++++++++++++++++++++++++++++++
>  1 files changed, 31 insertions(+), 0 deletions(-)
> 
> diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
> index b854a89..bda0164 100644
> --- a/kernel/time/tick-sched.c
> +++ b/kernel/time/tick-sched.c
> @@ -589,6 +589,32 @@ static enum hrtimer_restart tick_sched_timer(struct 
> hrtimer *timer)
>  	return HRTIMER_RESTART;
>  }
>  
> +#if defined(CONFIG_X86) && defined(CONFIG_NO_HZ)
> +static __init int is_nohz_broken(void)
> +{

We definitely do not add x86 quirks into the generic code. 

Is there really no other way to fix this problem ? Which chipset is
involved here ? SB400/600 perhaps ?

Thanks,

	tglx


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