Messages in this thread | | | Subject | Re: [RFC PATCH 10/15] nohz_task: Enter in extended quiescent state when in userspace | From | Peter Zijlstra <> | Date | Mon, 20 Dec 2010 17:18:40 +0100 |
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On Mon, 2010-12-20 at 16:24 +0100, Frederic Weisbecker wrote: > (we check if the local cpu is in nohz mode, which means > no other task compete on that CPU)
You keep repeating that definition, but its not true.. It means there is not work for the tick to do, the tick does _tons_ more besides preemption, so nr_running==1 is necessary but not sufficient.
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