Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler updates from Ingo Molnar:

 - introduce and use task_rcu_dereference()/try_get_task_struct() to fix
   and generalize task_struct handling (Oleg Nesterov)

 - do various per entity load tracking (PELT) fixes and optimizations
   (Peter Zijlstra)

 - cputime virt-steal time accounting enhancements/fixes (Wanpeng Li)

 - introduce consolidated cputime output file cpuacct.usage_all and
   related refactorings (Zhao Lei)

 - ... plus misc fixes and enhancements

* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/core: Panic on scheduling while atomic bugs if kernel.panic_on_warn is set
  sched/cpuacct: Introduce cpuacct.usage_all to show all CPU stats together
  sched/cpuacct: Use loop to consolidate code in cpuacct_stats_show()
  sched/cpuacct: Merge cpuacct_usage_index and cpuacct_stat_index enums
  sched/fair: Rework throttle_count sync
  sched/core: Fix sched_getaffinity() return value kerneldoc comment
  sched/fair: Reorder cgroup creation code
  sched/fair: Apply more PELT fixes
  sched/fair: Fix PELT integrity for new tasks
  sched/cgroup: Fix cpu_cgroup_fork() handling
  sched/fair: Fix PELT integrity for new groups
  sched/fair: Fix and optimize the fork() path
  sched/cputime: Add steal time support to full dynticks CPU time accounting
  sched/cputime: Fix prev steal time accouting during CPU hotplug
  KVM: Fix steal clock warp during guest CPU hotplug
  sched/debug: Always show 'nr_migrations'
  sched/fair: Use task_rcu_dereference()
  sched/api: Introduce task_rcu_dereference() and try_get_task_struct()
  sched/idle: Optimize the generic idle loop
  sched/fair: Fix the wrong throttled clock time for cfs_rq_clock_task()

1 files changed, 6 insertions, 15 deletions

diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index 81283592942b..c64fc5114004 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -321,6 +321,7 @@ extern int tg_nop(struct task_group *tg, void *data);
 
 extern void free_fair_sched_group(struct task_group *tg);
 extern int alloc_fair_sched_group(struct task_group *tg, struct task_group *parent);
+extern void online_fair_sched_group(struct task_group *tg);
 extern void unregister_fair_sched_group(struct task_group *tg);
 extern void init_tg_cfs_entry(struct task_group *tg, struct cfs_rq *cfs_rq,
 			struct sched_entity *se, int cpu,
@@ -437,7 +438,7 @@ struct cfs_rq {
 
 	u64 throttled_clock, throttled_clock_task;
 	u64 throttled_clock_task_time;
-	int throttled, throttle_count, throttle_uptodate;
+	int throttled, throttle_count;
 	struct list_head throttled_list;
 #endif /* CONFIG_CFS_BANDWIDTH */
 #endif /* CONFIG_FAIR_GROUP_SCHED */
@@ -1246,8 +1247,11 @@ struct sched_class {
 
 	void (*update_curr) (struct rq *rq);
 
+#define TASK_SET_GROUP  0
+#define TASK_MOVE_GROUP	1
+
 #ifdef CONFIG_FAIR_GROUP_SCHED
-	void (*task_move_group) (struct task_struct *p);
+	void (*task_change_group) (struct task_struct *p, int type);
 #endif
 };
 
@@ -1809,16 +1813,3 @@ static inline void cpufreq_trigger_update(u64 time) {}
 #else /* arch_scale_freq_capacity */
 #define arch_scale_freq_invariant()	(false)
 #endif
-
-static inline void account_reset_rq(struct rq *rq)
-{
-#ifdef CONFIG_IRQ_TIME_ACCOUNTING
-	rq->prev_irq_time = 0;
-#endif
-#ifdef CONFIG_PARAVIRT
-	rq->prev_steal_time = 0;
-#endif
-#ifdef CONFIG_PARAVIRT_TIME_ACCOUNTING
-	rq->prev_steal_time_rq = 0;
-#endif
-}