Re: [PATCH 07/13] sched: Enable IPI reception on timekeeper undernohz full system

[Peter Zijlstra]

On Tue, Dec 17, 2013 at 11:51:26PM +0100, Frederic Weisbecker wrote:
> We need the default timekeeping CPU to be able to receive IPIs sent
> from full dynticks CPUs when they wake up from full system idle state.
> 
> Therefore we need an entrypoint from the scheduler IPI so that the
> need to poll on timekeeping duty is re-evaluated from irq_exit().
> 
> In order to achieve this, lets take the scheduler IPI everytime as long
> as there is at least one full dynticks CPU around. Full dynticks CPUs
> are interested too in taking scheduler IPIs to reevaluate their tick.

I should probably read the other patches in this series, but the above
makes my brain go *beeeep* and throw an error.


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