Re: [PATCH v2] sched/fair: check for idle core

[Chen Yu]

On Fri, Oct 23, 2020 at 1:32 AM Julia Lawall <Julia.Lawall@xxxxxxxx> wrote:
>
[cut]
> diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
> index aa4c6227cd6d..9b23dad883ee 100644
> --- a/kernel/sched/fair.c
> +++ b/kernel/sched/fair.c
> @@ -5804,6 +5804,9 @@ wake_affine_idle(int this_cpu, int prev_cpu, int sync)
>         if (sync && cpu_rq(this_cpu)->nr_running == 1)
>                 return this_cpu;
>
> +       if (available_idle_cpu(prev_cpu))
How about also taking  sched_idle_cpu(prev_cpu) into consideration?
if (available_idle_cpu(prev_cpu) || sched_idle_cpu(prev_cpu))

Thanks,
Chenyu