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-rw-r--r--kernel/sched.c41
1 files changed, 26 insertions, 15 deletions
diff --git a/kernel/sched.c b/kernel/sched.c
index 0408cdc6d572..ec5f472bc5b9 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -4279,9 +4279,9 @@ pick_next_task(struct rq *rq)
}
/*
- * schedule() is the main scheduler function.
+ * __schedule() is the main scheduler function.
*/
-asmlinkage void __sched schedule(void)
+static void __sched __schedule(void)
{
struct task_struct *prev, *next;
unsigned long *switch_count;
@@ -4322,16 +4322,6 @@ need_resched:
if (to_wakeup)
try_to_wake_up_local(to_wakeup);
}
-
- /*
- * If we are going to sleep and we have plugged IO
- * queued, make sure to submit it to avoid deadlocks.
- */
- if (blk_needs_flush_plug(prev)) {
- raw_spin_unlock(&rq->lock);
- blk_schedule_flush_plug(prev);
- raw_spin_lock(&rq->lock);
- }
}
switch_count = &prev->nvcsw;
}
@@ -4369,6 +4359,26 @@ need_resched:
if (need_resched())
goto need_resched;
}
+
+static inline void sched_submit_work(struct task_struct *tsk)
+{
+ if (!tsk->state)
+ return;
+ /*
+ * If we are going to sleep and we have plugged IO queued,
+ * make sure to submit it to avoid deadlocks.
+ */
+ if (blk_needs_flush_plug(tsk))
+ blk_schedule_flush_plug(tsk);
+}
+
+asmlinkage void schedule(void)
+{
+ struct task_struct *tsk = current;
+
+ sched_submit_work(tsk);
+ __schedule();
+}
EXPORT_SYMBOL(schedule);
#ifdef CONFIG_MUTEX_SPIN_ON_OWNER
@@ -4435,7 +4445,7 @@ asmlinkage void __sched notrace preempt_schedule(void)
do {
add_preempt_count_notrace(PREEMPT_ACTIVE);
- schedule();
+ __schedule();
sub_preempt_count_notrace(PREEMPT_ACTIVE);
/*
@@ -4463,7 +4473,7 @@ asmlinkage void __sched preempt_schedule_irq(void)
do {
add_preempt_count(PREEMPT_ACTIVE);
local_irq_enable();
- schedule();
+ __schedule();
local_irq_disable();
sub_preempt_count(PREEMPT_ACTIVE);
@@ -5588,7 +5598,7 @@ static inline int should_resched(void)
static void __cond_resched(void)
{
add_preempt_count(PREEMPT_ACTIVE);
- schedule();
+ __schedule();
sub_preempt_count(PREEMPT_ACTIVE);
}
@@ -7443,6 +7453,7 @@ static void __sdt_free(const struct cpumask *cpu_map)
struct sched_domain *sd = *per_cpu_ptr(sdd->sd, j);
if (sd && (sd->flags & SD_OVERLAP))
free_sched_groups(sd->groups, 0);
+ kfree(*per_cpu_ptr(sdd->sd, j));
kfree(*per_cpu_ptr(sdd->sg, j));
kfree(*per_cpu_ptr(sdd->sgp, j));
}