sched/features: Turn off the TTWU_QUEUE feature

While the feature TTWU_QUEUE has the advantage of reducing cache
bouncing of runqueue locks, it has the side effect that runqueue
statistics are not updated until the remote CPU has a chance to
enqueue the task. Since there is no upper bound on the amount of
time it can take the remote CPU to enqueue the task, several
sequential wakeups can result in suboptimal task placement based
on the stale statistics. Turn off the feature as the cost of
sub-optimal placement is much higher than the cost of cache bouncing
spinlocks for msm based systems.

Change-Id: I0b85c0225237b2bc44f54934769f5e3750c0f3d6
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>
[pkondeti@codeaurora.org: Resolved minor merge conflict]
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
Signed-off-by: Forenche <prahul2003@gmail.com>
Signed-off-by: Richard Raya <rdxzv.dev@gmail.com>
[vbajs: This reverts commit 3307013.]
Signed-off-by: Yahya Wessam <yahyawessam2002@gmail.com>

Author: Syed Rameez Mustafa

kernel/sched/features.h

@@ -49,7 +49,7 @@
  * Queue remote wakeups on the target CPU and process them
  * using the scheduler IPI. Reduces rq->lock contention/bounces.
  */
-#define SCHED_FEAT_TTWU_QUEUE 1
+#define SCHED_FEAT_TTWU_QUEUE 0
 
 /*
  * When doing wakeups, attempt to limit superfluous scans of the LLC domain.