Re: [RFC PATCH v1 3/8] sched/cpufreq_schedutil: make worker kthread be SCHED_DEADLINE

[Viresh Kumar]

On 05-07-17, 09:59, Juri Lelli wrote:
> diff --git a/kernel/sched/cpufreq_schedutil.c 
> b/kernel/sched/cpufreq_schedutil.c
> index f2494d1fc8ef..ba6227625f24 100644
> --- a/kernel/sched/cpufreq_schedutil.c
> +++ b/kernel/sched/cpufreq_schedutil.c
> @@ -424,7 +424,16 @@ static void sugov_policy_free(struct sugov_policy 
> *sg_policy)
>  static int sugov_kthread_create(struct sugov_policy *sg_policy)
>  {
>       struct task_struct *thread;
> -     struct sched_param param = { .sched_priority = MAX_USER_RT_PRIO / 2 };
> +     struct sched_attr attr = {
> +             .size = sizeof(struct sched_attr),
> +             .sched_policy = SCHED_DEADLINE,
> +             .sched_flags = SCHED_FLAG_SPECIAL,
> +             .sched_nice = 0,
> +             .sched_priority = 0,
> +             .sched_runtime = 0,
> +             .sched_deadline = 0,
> +             .sched_period = 0,
> +     };
>       struct cpufreq_policy *policy = sg_policy->policy;
>       int ret;
>  
> @@ -442,10 +451,10 @@ static int sugov_kthread_create(struct sugov_policy 
> *sg_policy)
>               return PTR_ERR(thread);
>       }
>  
> -     ret = sched_setscheduler_nocheck(thread, SCHED_FIFO, &param);
> +     ret = sched_setattr_nocheck(thread, &attr);
>       if (ret) {
>               kthread_stop(thread);
> -             pr_warn("%s: failed to set SCHED_FIFO\n", __func__);
> +             pr_warn("%s: failed to set SCHED_DEADLINE\n", __func__);
>               return ret;
>       }

Acked-by: Viresh Kumar <viresh.ku...@linaro.org> (schedutil)

-- 
viresh