Messages in this thread | | | Date | Tue, 17 Nov 2015 11:24:49 +0100 | From | Peter Zijlstra <> | Subject | Re: [PATCH 2/4] timer: relax tick stop in idle entry |
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On Mon, Nov 16, 2015 at 09:04:03PM -0800, Paul E. McKenney wrote: > On Mon, Nov 16, 2015 at 06:57:14PM -0800, Arjan van de Ven wrote: > > On 11/16/2015 6:53 PM, Paul E. McKenney wrote: > > >Fair point. When in the five-jiffy throttling state, what can wake up > > >a CPU? In an earlier version of this proposal, the answer was "nothing", > > >but maybe that has changed. > > > > device interrupts are likely to wake the cpus. > > OK, that I cannot help you with. But presumably if the interrupt handler > does a wakeup (or similar), that is deferred to the end of the throttling > interval? Timers are also deferred, including hrtimers?
This throttling thing only throttles 'normal' tasks, real-time tasks will still run.
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