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authorPeter Zijlstra <peterz@infradead.org>2014-02-12 15:47:29 +0100
committerThomas Gleixner <tglx@linutronix.de>2014-02-21 21:43:18 +0100
commitdc87734106bb6e97c92d8bd81f261fb71976ec2c (patch)
tree42df15a40c0c96470f70b2582383aa00d2bb60c9 /kernel/sched/rt.c
parent3f1d2a318171bf61850d4e5a72031271e5aada76 (diff)
downloadop-kernel-dev-dc87734106bb6e97c92d8bd81f261fb71976ec2c.zip
op-kernel-dev-dc87734106bb6e97c92d8bd81f261fb71976ec2c.tar.gz
sched: Remove some #ifdeffery
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>
Diffstat (limited to 'kernel/sched/rt.c')
-rw-r--r--kernel/sched/rt.c41
1 files changed, 30 insertions, 11 deletions
diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c
index 65c2d68..3e488ca 100644
--- a/kernel/sched/rt.c
+++ b/kernel/sched/rt.c
@@ -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;
}
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