Hello,
On Mon, Feb 12, 2018 at 02:58:57PM +0000, Mel Gorman wrote:
> diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
> index 28c8d9c91955..50442697b455 100644
> --- a/kernel/sched/fair.c
> +++ b/kernel/sched/fair.c
> @@ -5710,8 +5710,14 @@ wake_affine_idle(int this_cpu, int prev_cpu, int sync)
> if (idle_cpu(this_cpu) && cpus_share_cache(this_cpu, prev_cpu))
> return idle_cpu(prev_cpu) ? prev_cpu : this_cpu;
>
> - if (sync && cpu_rq(this_cpu)->nr_running == 1)
> + if (sync && cpu_rq(this_cpu)->nr_running == 1) {
> + /* Avoid tasks exiting pulling parents to new nodes */
Semi-confusing wording (WTH are "pulling parents"? :) - possibly better
variant?:
Avoid having exiting tasks pull their parents to new nodes
Good catch, it seems.
HTH,
Andreas Mohr
--
GNU/Linux. It's not the software that's free, it's you.
