Patch "sched: Clean up idle task SMP logic" has been added to the 3.14-stable tree

This is a note to let you know that I've just added the patch titled

sched: Clean up idle task SMP logic

to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
sched-clean-up-idle-task-smp-logic.patch
and it can be found in the queue-3.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Peter Zijlstra <[email protected]>
Date: Fri, 17 Jan 2014 15:09:39 +0100
Subject: sched: Clean up idle task SMP logic

From: Peter Zijlstra <[email protected]>

commit 6c3b4d44ba2838f00614a5a2d777d4401e0bfd71 upstream.

The idle post_schedule flag is just a vile waste of time, furthermore it appears unneeded, move the idle_enter_fair() call into pick_next_task_idle().

---
 kernel/sched/idle_task.c |    9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

@@ -19,11 +19,6 @@ static void pre_schedule_idle(struct rq
 	idle_exit_fair(rq);
 	rq_last_tick_reset(rq);
 }
-
-static void post_schedule_idle(struct rq *rq)
-{
-	idle_enter_fair(rq);
-}
 #endif /* CONFIG_SMP */
 /*
  * Idle tasks are unconditionally rescheduled:

@@ -37,8 +32,7 @@ static struct task_struct *pick_next_tas
 {
 	schedstat_inc(rq, sched_goidle);
 #ifdef CONFIG_SMP
-	/* Trigger the post schedule to do an idle_enter for CFS */
-	rq->post_schedule = 1;
+	idle_enter_fair(rq);
 #endif
 	return rq->idle;
 }

@@ -102,7 +96,6 @@ const struct sched_class idle_sched_clas
 #ifdef CONFIG_SMP
 	.select_task_rq		= select_task_rq_idle,
 	.pre_schedule		= pre_schedule_idle,
-	.post_schedule		= post_schedule_idle,
 #endif
 
 	.set_curr_task          = set_curr_task_idle,

Patches currently in stable-queue which might be from [email protected] are

queue-3.14/sched-clean-up-idle-task-smp-logic.patch