Merge branch 'linus' into sched/core

Merge reason: branch had an old upstream base (-rc1-ish), but also
              merge to avoid a conflict.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 42 insertions, 15 deletions

diff --git a/kernel/sched.c b/kernel/sched.c
index ebc5151f88c8..03f7e3fd80b5 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -493,6 +493,7 @@ struct rt_rq {
 #endif
 #ifdef CONFIG_SMP
         unsigned long rt_nr_migratory;
+        unsigned long rt_nr_total;
         int overloaded;
         struct plist_head pushable_tasks;
 #endif
@@ -2572,15 +2573,37 @@ static void __sched_fork(struct task_struct *p)
         p->se.avg_wakeup                = sysctl_sched_wakeup_granularity;
 
 #ifdef CONFIG_SCHEDSTATS
-        p->se.wait_start                = 0;
-        p->se.sum_sleep_runtime         = 0;
-        p->se.sleep_start               = 0;
-        p->se.block_start               = 0;
-        p->se.sleep_max                 = 0;
-        p->se.block_max                 = 0;
-        p->se.exec_max                  = 0;
-        p->se.slice_max                 = 0;
-        p->se.wait_max                  = 0;
+        p->se.wait_start                        = 0;
+        p->se.wait_max                          = 0;
+        p->se.wait_count                        = 0;
+        p->se.wait_sum                          = 0;
+
+        p->se.sleep_start                       = 0;
+        p->se.sleep_max                         = 0;
+        p->se.sum_sleep_runtime                 = 0;
+
+        p->se.block_start                       = 0;
+        p->se.block_max                         = 0;
+        p->se.exec_max                          = 0;
+        p->se.slice_max                         = 0;
+
+        p->se.nr_migrations_cold                = 0;
+        p->se.nr_failed_migrations_affine       = 0;
+        p->se.nr_failed_migrations_running      = 0;
+        p->se.nr_failed_migrations_hot          = 0;
+        p->se.nr_forced_migrations              = 0;
+        p->se.nr_forced2_migrations             = 0;
+
+        p->se.nr_wakeups                        = 0;
+        p->se.nr_wakeups_sync                   = 0;
+        p->se.nr_wakeups_migrate                = 0;
+        p->se.nr_wakeups_local                  = 0;
+        p->se.nr_wakeups_remote                 = 0;
+        p->se.nr_wakeups_affine                 = 0;
+        p->se.nr_wakeups_affine_attempts        = 0;
+        p->se.nr_wakeups_passive                = 0;
+        p->se.nr_wakeups_idle                   = 0;
+
 #endif
 
         INIT_LIST_HEAD(&p->rt.run_list);
@@ -6580,6 +6603,11 @@ SYSCALL_DEFINE0(sched_yield)
         return 0;
 }
 
+static inline int should_resched(void)
+{
+        return need_resched() && !(preempt_count() & PREEMPT_ACTIVE);
+}
+
 static void __cond_resched(void)
 {
 #ifdef CONFIG_DEBUG_SPINLOCK_SLEEP
@@ -6599,8 +6627,7 @@ static void __cond_resched(void)
 
 int __sched _cond_resched(void)
 {
-        if (need_resched() && !(preempt_count() & PREEMPT_ACTIVE) &&
-                                        system_state == SYSTEM_RUNNING) {
+        if (should_resched()) {
                 __cond_resched();
                 return 1;
         }
@@ -6618,12 +6645,12 @@ EXPORT_SYMBOL(_cond_resched);
  */
 int cond_resched_lock(spinlock_t *lock)
 {
-        int resched = need_resched() && system_state == SYSTEM_RUNNING;
+        int resched = should_resched();
         int ret = 0;
 
         if (spin_needbreak(lock) || resched) {
                 spin_unlock(lock);
-                if (resched && need_resched())
+                if (resched)
                         __cond_resched();
                 else
                         cpu_relax();
@@ -6638,7 +6665,7 @@ int __sched cond_resched_softirq(void)
 {
         BUG_ON(!in_softirq());
 
-        if (need_resched() && system_state == SYSTEM_RUNNING) {
+        if (should_resched()) {
                 local_bh_enable();
                 __cond_resched();
                 local_bh_disable();
@@ -9109,7 +9136,7 @@ static void init_rt_rq(struct rt_rq *rt_rq, struct rq *rq)
 #ifdef CONFIG_SMP
         rt_rq->rt_nr_migratory = 0;
         rt_rq->overloaded = 0;
-        plist_head_init(&rq->rt.pushable_tasks, &rq->lock);
+        plist_head_init(&rt_rq->pushable_tasks, &rq->lock);
 #endif
 
         rt_rq->rt_time = 0;