sched: rework enqueue/dequeue_entity() to get rid of set_curr_task()

rework enqueue/dequeue_entity() to get rid of 
sched_class::set_curr_task(). This simplifies sched_setscheduler(), 
rt_mutex_setprio() and sched_move_tasks().

   text    data     bss     dec     hex filename
  24330    2734      20   27084    69cc sched.o.before
  24233    2730      20   26983    6967 sched.o.after

Signed-off-by: Dmitry Adamushko <dmitry.adamushko@gmail.com>
Signed-off-by: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 0 insertions, 5 deletions

diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c
index b86944c20f9f..3c77c03bdf1e 100644
--- a/kernel/sched_rt.c
+++ b/kernel/sched_rt.c
@@ -218,10 +218,6 @@ static void task_tick_rt(struct rq *rq, struct task_struct *p)
         }
 }
 
-static void set_curr_task_rt(struct rq *rq)
-{
-}
-
 static struct sched_class rt_sched_class __read_mostly = {
         .enqueue_task           = enqueue_task_rt,
         .dequeue_task           = dequeue_task_rt,
@@ -234,6 +230,5 @@ static struct sched_class rt_sched_class __read_mostly = {
 
         .load_balance           = load_balance_rt,
 
-        .set_curr_task          = set_curr_task_rt,
         .task_tick              = task_tick_rt,
 };