From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Wed, 24 Jun 2015 22:09:40 +0000 (-0700)
Subject: Merge branch 'sched-hrtimers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel... 
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=98ec21a01896751b673b6c731ca8881daa8b2c6d;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

Merge branch 'sched-hrtimers-for-linus' of git://git./linux/kernel/git/tip/tip

Pull scheduler updates from Thomas Gleixner:
 "This series of scheduler updates depends on sched/core and timers/core
  branches, which are already in your tree:

   - Scheduler balancing overhaul to plug a hard to trigger race which
     causes an oops in the balancer (Peter Zijlstra)

   - Lockdep updates which are related to the balancing updates (Peter
     Zijlstra)"

* 'sched-hrtimers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched,lockdep: Employ lock pinning
  lockdep: Implement lock pinning
  lockdep: Simplify lock_release()
  sched: Streamline the task migration locking a little
  sched: Move code around
  sched,dl: Fix sched class hopping CBS hole
  sched, dl: Convert switched_{from, to}_dl() / prio_changed_dl() to balance callbacks
  sched,dl: Remove return value from pull_dl_task()
  sched, rt: Convert switched_{from, to}_rt() / prio_changed_rt() to balance callbacks
  sched,rt: Remove return value from pull_rt_task()
  sched: Allow balance callbacks for check_class_changed()
  sched: Use replace normalize_task() with __sched_setscheduler()
  sched: Replace post_schedule with a balance callback list
---

98ec21a01896751b673b6c731ca8881daa8b2c6d
diff --cc kernel/sched/core.c
index c86935a7f1f8,c74191aa4e6a..b803e1b8ab0c
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@@ -2372,8 -2556,10 +2573,9 @@@ context_switch(struct rq *rq, struct ta
  	 * of the scheduler it's an obvious special-case), so we
  	 * do an early lockdep release here:
  	 */
+ 	lockdep_unpin_lock(&rq->lock);
  	spin_release(&rq->lock.dep_map, 1, _THIS_IP_);
  
 -	context_tracking_task_switch(prev, next);
  	/* Here we just switch the register state and the stack. */
  	switch_to(prev, next, prev);
  	barrier();
diff --cc kernel/sched/deadline.c
index eac20c557a55,e8146415a688..0a17af35670a
--- a/kernel/sched/deadline.c
+++ b/kernel/sched/deadline.c
@@@ -676,10 -737,10 +737,10 @@@ static void update_curr_dl(struct rq *r
  	sched_rt_avg_update(rq, delta_exec);
  
  	dl_se->runtime -= dl_se->dl_yielded ? 0 : delta_exec;
 -	if (dl_runtime_exceeded(rq, dl_se)) {
 +	if (dl_runtime_exceeded(dl_se)) {
  		dl_se->dl_throttled = 1;
  		__dequeue_task_dl(rq, curr, 0);
- 		if (unlikely(!start_dl_timer(dl_se, curr->dl.dl_boosted)))
+ 		if (unlikely(dl_se->dl_boosted || !start_dl_timer(curr)))
  			enqueue_task_dl(rq, curr, ENQUEUE_REPLENISH);
  
  		if (!is_leftmost(curr, &rq->dl))