Merge commit 'remotes/tip/x86/paravirt' into x86/untangle2

[pandora-kernel.git] / kernel / sched.c

diff --git a/kernel/sched.c b/kernel/sched.c
index c71d7d5..fc17fd9 100644 (file)
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -2266,6 +2266,16 @@ static int try_to_wake_up(struct task_struct *p, unsigned int state, int sync)
        if (!sched_feat(SYNC_WAKEUPS))
                sync = 0;
 
+       if (!sync) {
+               if (current->se.avg_overlap < sysctl_sched_migration_cost &&
+                         p->se.avg_overlap < sysctl_sched_migration_cost)
+                       sync = 1;
+       } else {
+               if (current->se.avg_overlap >= sysctl_sched_migration_cost ||
+                         p->se.avg_overlap >= sysctl_sched_migration_cost)
+                       sync = 0;
+       }
+
 #ifdef CONFIG_SMP
        if (sched_feat(LB_WAKEUP_UPDATE)) {
                struct sched_domain *sd;
@@ -4687,8 +4697,8 @@ EXPORT_SYMBOL(default_wake_function);
  * started to run but is not in state TASK_RUNNING. try_to_wake_up() returns
  * zero in this (rare) case, and we handle it by continuing to scan the queue.
  */
-static void __wake_up_common(wait_queue_head_t *q, unsigned int mode,
-                            int nr_exclusive, int sync, void *key)
+void __wake_up_common(wait_queue_head_t *q, unsigned int mode,
+                       int nr_exclusive, int sync, void *key)
 {
        wait_queue_t *curr, *next;