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-rw-r--r--kernel/sched.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/kernel/sched.c b/kernel/sched.c
index 8d25be06db62..e88689522e66 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -676,6 +676,7 @@ inline void update_rq_clock(struct rq *rq)
676 676
677/** 677/**
678 * runqueue_is_locked 678 * runqueue_is_locked
679 * @cpu: the processor in question.
679 * 680 *
680 * Returns true if the current cpu runqueue is locked. 681 * Returns true if the current cpu runqueue is locked.
681 * This interface allows printk to be called with the runqueue lock 682 * This interface allows printk to be called with the runqueue lock
@@ -2311,7 +2312,7 @@ static int try_to_wake_up(struct task_struct *p, unsigned int state,
2311{ 2312{
2312 int cpu, orig_cpu, this_cpu, success = 0; 2313 int cpu, orig_cpu, this_cpu, success = 0;
2313 unsigned long flags; 2314 unsigned long flags;
2314 struct rq *rq; 2315 struct rq *rq, *orig_rq;
2315 2316
2316 if (!sched_feat(SYNC_WAKEUPS)) 2317 if (!sched_feat(SYNC_WAKEUPS))
2317 wake_flags &= ~WF_SYNC; 2318 wake_flags &= ~WF_SYNC;
@@ -2319,7 +2320,7 @@ static int try_to_wake_up(struct task_struct *p, unsigned int state,
2319 this_cpu = get_cpu(); 2320 this_cpu = get_cpu();
2320 2321
2321 smp_wmb(); 2322 smp_wmb();
2322 rq = task_rq_lock(p, &flags); 2323 rq = orig_rq = task_rq_lock(p, &flags);
2323 update_rq_clock(rq); 2324 update_rq_clock(rq);
2324 if (!(p->state & state)) 2325 if (!(p->state & state))
2325 goto out; 2326 goto out;
@@ -2350,6 +2351,10 @@ static int try_to_wake_up(struct task_struct *p, unsigned int state,
2350 set_task_cpu(p, cpu); 2351 set_task_cpu(p, cpu);
2351 2352
2352 rq = task_rq_lock(p, &flags); 2353 rq = task_rq_lock(p, &flags);
2354
2355 if (rq != orig_rq)
2356 update_rq_clock(rq);
2357
2353 WARN_ON(p->state != TASK_WAKING); 2358 WARN_ON(p->state != TASK_WAKING);
2354 cpu = task_cpu(p); 2359 cpu = task_cpu(p);
2355 2360
@@ -3656,6 +3661,7 @@ static void update_group_power(struct sched_domain *sd, int cpu)
3656 3661
3657/** 3662/**
3658 * update_sg_lb_stats - Update sched_group's statistics for load balancing. 3663 * update_sg_lb_stats - Update sched_group's statistics for load balancing.
3664 * @sd: The sched_domain whose statistics are to be updated.
3659 * @group: sched_group whose statistics are to be updated. 3665 * @group: sched_group whose statistics are to be updated.
3660 * @this_cpu: Cpu for which load balance is currently performed. 3666 * @this_cpu: Cpu for which load balance is currently performed.
3661 * @idle: Idle status of this_cpu 3667 * @idle: Idle status of this_cpu