linux-kernel - Re: [PATCH 1/2] sched/deadline: introduce start_hrtick_dl for !CONFIG_SCHED

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Date:	Thu, 13 Nov 2014 09:31:18 +0000
From:	Juri Lelli <juri.lelli@....com>
To:	Wanpeng Li <wanpeng.li@...ux.intel.com>,
	Ingo Molnar <mingo@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>
CC:	Kirill Tkhai <ktkhai@...allels.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] sched/deadline: introduce start_hrtick_dl for !CONFIG_SCHED_HRTICK

Hi,

On 11/11/14 01:52, Wanpeng Li wrote:
> Introduce start_hrtick_dl for !CONFIG_SCHED_HRTICK to align with
> fair class.
> 
> Signed-off-by: Wanpeng Li <wanpeng.li@...ux.intel.com>
> ---
>  kernel/sched/deadline.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
> index 04c2cbb..56674f6 100644
> --- a/kernel/sched/deadline.c
> +++ b/kernel/sched/deadline.c
> @@ -1013,6 +1013,10 @@ static void start_hrtick_dl(struct rq *rq, struct task_struct *p)
>  {
>  	hrtick_start(rq, p->dl.runtime);
>  }
> +#else /* !CONFIG_SCHED_HRTICK */
> +static void start_hrtick_dl(struct rq *rq, struct task_struct *p)
> +{
> +}
>  #endif
>  
>  static struct sched_dl_entity *pick_next_dl_entity(struct rq *rq,
> @@ -1066,10 +1070,8 @@ struct task_struct *pick_next_task_dl(struct rq *rq, struct task_struct *prev)
>  	/* Running task will never be pushed. */
>         dequeue_pushable_dl_task(rq, p);
>  
> -#ifdef CONFIG_SCHED_HRTICK
>  	if (hrtick_enabled(rq))
>  		start_hrtick_dl(rq, p);
> -#endif
>  
>  	set_post_schedule(rq);
>  
> @@ -1088,10 +1090,8 @@ static void task_tick_dl(struct rq *rq, struct task_struct *p, int queued)
>  {
>  	update_curr_dl(rq);
>  
> -#ifdef CONFIG_SCHED_HRTICK
>  	if (hrtick_enabled(rq) && queued && p->dl.runtime > 0)
>  		start_hrtick_dl(rq, p);
> -#endif
>  }
>  
>  static void task_fork_dl(struct task_struct *p)
> 

Looks good!

Acked-by: Juri Lelli <juri.lelli@....com>

Thanks,

- Juri

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