Re: [PATCH] sched/fair: Dequeue sched_delayed tasks when waking to a busy CPU

Mike Galbraith
2024-11-12T16:16:56Z

On Tue, 2024-11-12 at 10:41 -0500, Phil Auld wrote:
> On Tue, Nov 12, 2024 at 03:23:38PM +0100 Mike Galbraith wrote:
>
> >
> > We don't however have to let sched_delayed block SIS though.  Rendering
> > them transparent in idle_cpu() did NOT wreck the progression, so
> > maaaybe could help your regression.
> >
>
> You mean something like:
>
> if (rq->nr_running > rq->h_nr_delayed)
>        return 0;
>
> in idle_cpu() instead of the straight rq->nr_running check?

Yeah, close enough.

-Mike