Messages in this thread | | | Date | Tue, 8 Jan 2008 04:33:30 +0100 | From | Andi Kleen <> | Subject | Re: [RFC PATCH] kick sleeping idle CPUS on cpu_idle_wait |
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On Mon, Jan 07, 2008 at 09:27:24PM -0500, Steven Rostedt wrote: > > Sometimes cpu_idle_wait gets stuck because it might miss CPUS that are > already in idle, have no tasks waiting to run and have no interrupts > going to them. This is common on bootup when switching cpu idle > governors.
I must admit I never liked that cpu idle wait code anyways. Why again can't normal RCU be used for this? Waiting for two RCU quiescent cycles should be enough, shouldn't it?
-Andi
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