Messages in this thread | | | Date | Tue, 19 Aug 2008 19:16:32 +0200 | From | Manfred Spraul <> | Subject | nohz_cpu_mask question (was: Re: [PATCH tip/core/rcu] classic RCU locking and memory-barrier cleanups) |
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Hi all,
can someone explain me nohz_cpu_mask?
If I understand it correctly, it merely means that this cpu does not take timer interrupts, correct? The cpu can still take "real" interupts, e.g. a nic interrupt. The cpu could also do softirq processing.
Is that correct? Ingo?
If nohz cpus can take normal interrupts, then it would be wrong to exclude these cpus from the mask of cpus that must pass a quiescent cycle - a softirq could hold on a pointers.
-- Manfred
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