Re: [PATCH] sched/fair: schedutil: update only with all info available

[Vincent Guittot]

On 6 April 2018 at 19:28, Patrick Bellasi <patrick.bell...@arm.com> wrote:

>  }
> @@ -5454,8 +5441,11 @@ static void dequeue_task_fair(struct rq *rq, struct 
> task_struct *p, int flags)
>                 update_cfs_group(se);
>         }
>
> -       if (!se)
> +       /* The task is no more visible from the root cfs_rq */
> +       if (!se) {
>                 sub_nr_running(rq, 1);
> +               cpufreq_update_util(rq, 0);

call to cpufreq_update_util() should be done after util_est_dequeue()

> +       }
>
>         util_est_dequeue(&rq->cfs, p, task_sleep);
>         hrtick_update(rq);