diff options
Diffstat (limited to 'kernel/sched/fair.c')
| -rw-r--r-- | kernel/sched/fair.c | 27 |
1 files changed, 6 insertions, 21 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 73063560b9ec..994f5493ee5b 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -4448,7 +4448,7 @@ enqueue_task_fair(struct rq *rq, struct task_struct *p, int flags) * * note: in the case of encountering a throttled cfs_rq we will * post the final h_nr_running increment below. - */ + */ if (cfs_rq_throttled(cfs_rq)) break; cfs_rq->h_nr_running++; @@ -8289,31 +8289,17 @@ static void task_fork_fair(struct task_struct *p) { struct cfs_rq *cfs_rq; struct sched_entity *se = &p->se, *curr; - int this_cpu = smp_processor_id(); struct rq *rq = this_rq(); - unsigned long flags; - - raw_spin_lock_irqsave(&rq->lock, flags); + raw_spin_lock(&rq->lock); update_rq_clock(rq); cfs_rq = task_cfs_rq(current); curr = cfs_rq->curr; - - /* - * Not only the cpu but also the task_group of the parent might have - * been changed after parent->se.parent,cfs_rq were copied to - * child->se.parent,cfs_rq. So call __set_task_cpu() to make those - * of child point to valid ones. - */ - rcu_read_lock(); - __set_task_cpu(p, this_cpu); - rcu_read_unlock(); - - update_curr(cfs_rq); - - if (curr) + if (curr) { + update_curr(cfs_rq); se->vruntime = curr->vruntime; + } place_entity(cfs_rq, se, 1); if (sysctl_sched_child_runs_first && curr && entity_before(curr, se)) { @@ -8326,8 +8312,7 @@ static void task_fork_fair(struct task_struct *p) } se->vruntime -= cfs_rq->min_vruntime; - - raw_spin_unlock_irqrestore(&rq->lock, flags); + raw_spin_unlock(&rq->lock); } /* |