Messages in this thread | | | Date | Tue, 23 Oct 2018 12:00:57 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH v4 2/2] sched/fair: update scale invariance of PELT |
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On Fri, Oct 19, 2018 at 06:17:51PM +0200, Vincent Guittot wrote: > In order to achieve this time scaling, a new clock_pelt is created per rq.
> diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h > index 3990818..d987f50 100644 > --- a/kernel/sched/sched.h > +++ b/kernel/sched/sched.h > @@ -848,6 +848,8 @@ struct rq { > unsigned int clock_update_flags; > u64 clock; > u64 clock_task; > + u64 clock_pelt; > + unsigned long lost_idle_time;
Very clever that. Seems to work out nicely. We should maybe look at ensuring all these clock fields are indeed on the same cacheline.
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