Re: [PATCH] sched/deadline: remove useless param from setup_new_dl_entity

From: Juri Lelli
Date: Fri Jun 17 2016 - 06:08:19 EST


On 17/06/16 11:58, Luca Abeni wrote:
> Hi,
>
> On Fri, 17 Jun 2016 10:48:41 +0100
> Juri Lelli <juri.lelli@xxxxxxx> 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
>

Yeah, noticed this while looking at your reclaiming patches. :)

Thanks for reviewing,

- Juri

>
> >
> > Cc: Ingo Molnar <mingo@xxxxxxxxxx>
> > Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
> > Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
> > Cc: Luca Abeni <luca.abeni@xxxxxxxx>
> > Signed-off-by: Juri Lelli <juri.lelli@xxxxxxx>
> > ---
> > 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
>