linux-kernel - Re: [PATCH] sched/deadline: remove useless param from setup_new_dl

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Date:	Fri, 17 Jun 2016 11:58:38 +0200
From:	luca abeni <luca.abeni@...tn.it>
To:	Juri Lelli <juri.lelli@....com>
Cc:	linux-kernel@...r.kernel.org, peterz@...radead.org,
	mingo@...hat.com, rostedt@...dmis.org
Subject: Re: [PATCH] sched/deadline: remove useless param from
 setup_new_dl_entity

Hi,

On Fri, 17 Jun 2016 10:48:41 +0100
Juri Lelli <juri.lelli@....com> wrote:

> setup_new_dl_entity() takes two parameters, but it only actually uses
> one of them to setup a new dl_entity.
> 
> Remove the second, useless, parameter.

Funnily enough, I was adding something similar in my local queue :)
Looks good to me



			Thanks,
				Luca


> 
> Cc: Ingo Molnar <mingo@...hat.com>
> Cc: Peter Zijlstra <peterz@...radead.org>
> Cc: Steven Rostedt <rostedt@...dmis.org>
> Cc: Luca Abeni <luca.abeni@...tn.it>
> Signed-off-by: Juri Lelli <juri.lelli@....com>
> ---
>  kernel/sched/deadline.c | 9 ++++-----
>  1 file changed, 4 insertions(+), 5 deletions(-)
> 
> diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
> index fcb7f0217ff4..5229788a4765 100644
> --- a/kernel/sched/deadline.c
> +++ b/kernel/sched/deadline.c
> @@ -346,8 +346,7 @@ static void check_preempt_curr_dl(struct rq *rq,
> struct task_struct *p,
>   * one, and to (try to!) reconcile itself with its own scheduling
>   * parameters.
>   */
> -static inline void setup_new_dl_entity(struct sched_dl_entity *dl_se,
> -				       struct sched_dl_entity *pi_se)
> +static inline void setup_new_dl_entity(struct sched_dl_entity *dl_se)
>  {
>  	struct dl_rq *dl_rq = dl_rq_of_se(dl_se);
>  	struct rq *rq = rq_of_dl_rq(dl_rq);
> @@ -367,8 +366,8 @@ static inline void setup_new_dl_entity(struct
> sched_dl_entity *dl_se,
>  	 * future; in fact, we must consider execution overheads
> (time
>  	 * spent on hardirq context, etc.).
>  	 */
> -	dl_se->deadline = rq_clock(rq) + pi_se->dl_deadline;
> -	dl_se->runtime = pi_se->dl_runtime;
> +	dl_se->deadline = rq_clock(rq) + dl_se->dl_deadline;
> +	dl_se->runtime = dl_se->dl_runtime;
>  }
>  
>  /*
> @@ -1721,7 +1720,7 @@ static void switched_from_dl(struct rq *rq,
> struct task_struct *p) static void switched_to_dl(struct rq *rq,
> struct task_struct *p) {
>  	if (dl_time_before(p->dl.deadline, rq_clock(rq)))
> -		setup_new_dl_entity(&p->dl, &p->dl);
> +		setup_new_dl_entity(&p->dl);
>  
>  	if (task_on_rq_queued(p) && rq->curr != p) {
>  #ifdef CONFIG_SMP