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SubjectRe: NMI watchdog + NOHZ question
On Wed, Jun 24, 2009 at 12:08:11AM -0700, David Miller wrote:
> From: Andi Kleen <andi@firstfloor.org>
> Date: Wed, 24 Jun 2009 09:03:15 +0200
>
> >> I'm not exactly sure what to do about this.
> >
> > Ack the timer interrupt earlier (and also give it a high priority?)
>
> It has a higher priority, but all interrupts get re-enabled right
> before we process software interrupts. So the flood of qla2xxx
> interrupts can come in before we can run the timer softirq and
> thus schedule the next timer interrupt.

Ah you have a one shot timer and it gets rescheduled in the softirq?
If yes why not in doing that directly in the hardirq handler?

-Andi
--
ak@linux.intel.com -- Speaking for myself only.


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