linux-kernel - Re: add_timer_on and CONFIG_NO

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Message-Id: <1180540620.3930.1.camel@chaos>
Date:	Wed, 30 May 2007 17:57:00 +0200
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Joe Korty <joe.korty@...r.com>
Cc:	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...e.hu>
Subject: Re: add_timer_on and CONFIG_NO_HZ

Joe,

On Wed, 2007-05-30 at 09:28 -0400, Joe Korty wrote:
> Hi Thomas,
>  It seems that when add_timer_on() is used to put a timer
> on another cpu's timer queue, that remote cpu should be
> made to reprogram its hardware APIC timer, when CONFIG_NO_HZ=y
> and the new timer is put at the front of the timer wheel.

indeed, that makes sense. I look into this. Thanks for pointing it out.

	tglx


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