On Mon, Jul 23, 2018 at 08:09:55AM -0700, Srikar Dronamraju wrote:
> > > sched/numa: Stop multiple tasks from moving to the cpu at the same time
>
> This patch has go-ahead from Mel and Rik and no outstanding comments.
I left it out because it's part of the big xchg() mess.
In particular:
+ if (xchg(&rq->numa_migrate_on, 1))
+ return;
+
+ if (env->best_cpu != -1) {
+ rq = cpu_rq(env->best_cpu);
+ WRITE_ONCE(rq->numa_migrate_on, 0);
+ }
I'm again confused by clearing numa_migrate_on at this point..
> > > sched/numa: Updation of scan period need not be in lock
>
> I didnt see any comments for this apart from an ack from Rik.
> + It thought it was trivial and shouldnt have any side-effect.
Oh, my bad I actually have this one.
