Messages in this thread |  | | | Subject | Re: NMI watchdog + NOHZ question | | From | Andi Kleen <> | | Date | Mon, 22 Jun 2009 10:18:50 +0200 |
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David Miller <davem@davemloft.net> writes: > > Is there something fundamental that should be preventing this?
Unless that changed recently when I wasn't looking NOHZ should only stop timers when the CPU is idle. So when a driver is doing something and the interrupts are not disabled for too long the timers should be ticking.
Then when you're idle interrupts should be never off, so the NMI watchdog cannot fire. On x86 often the NMI watchdog is in fact stopped on idle.
-Andi -- ak@linux.intel.com -- Speaking for myself only.
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