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Date: Sun, 15 May 2011 22:11:06 +0200
From: Christian Hoffmann <email@christianhoffmann.info>
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To: Thomas Gleixner <tglx@linutronix.de>
CC: john stultz <johnstul@us.ibm.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Long timeout when booting >= 2.6.38
References: <4DBEFCBA.3070501@christianhoffmann.info>  <1304363375.3226.5.camel@work-vm> <4DBF1725.3030800@christianhoffmann.info>  <1304372955.3226.15.camel@work-vm>  <4DBF2FB4.8000304@christianhoffmann.info> <1304470839.3037.12.camel@work-vm> <4DC100D0.1030302@christianhoffmann.info> <alpine.LFD.2.02.1105041015220.3005@ionos> <4DC1832E.5030806@christianhoffmann.info> <alpine.LFD.2.02.1105041931510.3005@ionos> <4DC1AB9B.8080501@christianhoffmann.info> <alpine.LFD.2.02.1105042154410.3005@ionos> <4DC2DE2C.40108@christianhoffmann.info> <alpine.LFD.2.02.1105091020450.2895@ionos>
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> Thanks, can you please add the following patch and generate another
> trace ?
>
> Thanks,
>
> 	Thomas
>
> --- linux-2.6.orig/kernel/timer.c
> +++ linux-2.6/kernel/timer.c
> @@ -1268,11 +1268,14 @@ unsigned long get_next_timer_interrupt(u
>   	if (cpu_is_offline(smp_processor_id()))
>   		return now + NEXT_TIMER_MAX_DELTA;
>   	spin_lock(&base->lock);
> +	trace_printk("nx: %lx tj: %lx\n", base->next_timer, base->timer_jiffies);
>   	if (time_before_eq(base->next_timer, base->timer_jiffies))
>   		base->next_timer = __next_timer_interrupt(base);
>   	expires = base->next_timer;
>   	spin_unlock(&base->lock);
>
> +	trace_printk("ex: %lx nw: %lx\n", expires, now);
> +
>   	if (time_before_eq(expires, now))
>   		return now;
>

Hi,

new trace:
http://dl.dropbox.com/u/21820416/traceing2.log.bz2

Sorry for delay.

Regards,
Chris