On Tue, 23 Oct 2018 at 12:01, Peter Zijlstra <pet...@infradead.org> wrote: > > 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
Thanks > ensuring all these clock fields are indeed on the same cacheline. yes good point