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sched: Remove some #ifdeffery

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Remove a few gratuitous #ifdefs in pick_next_task*().

Cc: Ingo Molnar <mingo@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Juri Lelli <juri.lelli@gmail.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/n/tip-nnzddp5c4fijyzzxxrwlxghf@git.kernel.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Peter Zijlstra
2014-02-12 15:47:29 +01:00
committed by Thomas Gleixner
parent 3f1d2a3181
commit dc87734106
4 changed files with 60 additions and 21 deletions
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41
kernel/sched/rt.c
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@@ -231,6 +231,12 @@ int alloc_rt_sched_group(struct task_group *tg, struct task_group *parent)
static int pull_rt_task(struct rq *this_rq);
static inline bool need_pull_rt_task(struct rq *rq, struct task_struct *prev)
{
/* Try to pull RT tasks here if we lower this rq's prio */
return rq->rt.highest_prio.curr > prev->prio;
}
static inline int rt_overloaded(struct rq *rq)
{
return atomic_read(&rq->rd->rto_count);
@@ -317,6 +323,15 @@ static inline int has_pushable_tasks(struct rq *rq)
return !plist_head_empty(&rq->rt.pushable_tasks);
}
static inline void set_post_schedule(struct rq *rq)
{
/*
* We detect this state here so that we can avoid taking the RQ
* lock again later if there is no need to push
*/
rq->post_schedule = has_pushable_tasks(rq);
}
static void enqueue_pushable_task(struct rq *rq, struct task_struct *p)
{
plist_del(&p->pushable_tasks, &rq->rt.pushable_tasks);
@@ -361,6 +376,19 @@ void dec_rt_migration(struct sched_rt_entity *rt_se, struct rt_rq *rt_rq)
{
}
static inline bool need_pull_rt_task(struct rq *rq, struct task_struct *prev)
{
return false;
}
static inline int pull_rt_task(struct rq *this_rq)
{
return 0;
}
static inline void set_post_schedule(struct rq *rq)
{
}
#endif /* CONFIG_SMP */
static inline int on_rt_rq(struct sched_rt_entity *rt_se)
@@ -1332,11 +1360,8 @@ pick_next_task_rt(struct rq *rq, struct task_struct *prev)
struct task_struct *p;
struct rt_rq *rt_rq = &rq->rt;
#ifdef CONFIG_SMP
/* Try to pull RT tasks here if we lower this rq's prio */
if (rq->rt.highest_prio.curr > prev->prio)
if (need_pull_rt_task(rq, prev))
pull_rt_task(rq);
#endif
if (!rt_rq->rt_nr_running)
return NULL;
@@ -1352,13 +1377,7 @@ pick_next_task_rt(struct rq *rq, struct task_struct *prev)
if (p)
dequeue_pushable_task(rq, p);
#ifdef CONFIG_SMP
/*
* We detect this state here so that we can avoid taking the RQ
* lock again later if there is no need to push
*/
rq->post_schedule = has_pushable_tasks(rq);
#endif
set_post_schedule(rq);
return p;
}