linux-kernel - Re: NO_HZ: timer interrupt stuck [Re: Linux 2.6.21-rc1]

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Message-ID: <45DDADEB.3030309@drzeus.cx>
Date:	Thu, 22 Feb 2007 15:51:23 +0100
From:	Pierre Ossman <drzeus-list@...eus.cx>
To:	Arjan van de Ven <arjan@...radead.org>
CC:	Jan Engelhardt <jengelh@...ux01.gwdg.de>,
	Thomas Gleixner <tglx@...utronix.de>,
	Luca Tettamanti <kronos.it@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: NO_HZ: timer interrupt stuck [Re: Linux 2.6.21-rc1]

Arjan van de Ven wrote:
> On Thu, 2007-02-22 at 15:10 +0100, Pierre Ossman wrote:
>   
>>
>> So with a local apic, and acpi_pm as clocksource, I shouldn't be getting timer
>> interrupts? 
>>     
>
> timer interrupts as in "irq0"?
>
>   

Yes:

  0:    9786349    XT-PIC-XT        timer

> you shouldn't if you use the hrtimers/tickless stuff...
>   

CONFIG_HIGH_RES_TIMERS=y
CONFIG_NO_HZ=y

> can you get us a dmesg somewhere? maybe the kernel mentions why ;)
>
>   

Sure. My dmesg is full of mmc debug crud right now, but I'll just reboot
and I'll have a clean one for you.

Rgds

-- 
     -- Pierre Ossman

  Linux kernel, MMC maintainer        http://www.kernel.org
  PulseAudio, core developer          http://pulseaudio.org
  rdesktop, core developer          http://www.rdesktop.org

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