On Thu, Sep 26, 2013 at 11:58:12AM +0200, Peter Zijlstra wrote:
> @@ -3429,6 +3440,9 @@ select_task_rq_fair(struct task_struct *p, int sd_flag,
> int wake_flags)
> int want_affine = 0;
> int sync = wake_flags & WF_SYNC;
>
> + if (sync)
> + p->se.last_sync_wakeup = sched_clock_cpu(cpu);
> +
> if (p->nr_cpus_allowed == 1)
> return prev_cpu;
>
Oh, I suppose something like:
if (sync && !p->se.last_sync_wakeup)
p->se.last_sync_wakeup = sched_clock_cpu(cpu);
is also a nice variation to try..
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