linux-kernel - Re: Long timeout when booting >= 2.6.38

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Message-ID: <4DD0335A.6050400@christianhoffmann.info>
Date:	Sun, 15 May 2011 22:11:06 +0200
From:	Christian Hoffmann <email@...istianhoffmann.info>
To:	Thomas Gleixner <tglx@...utronix.de>
CC:	john stultz <johnstul@...ibm.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Long timeout when booting >= 2.6.38


> 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
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