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Commit e81b693c authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'sched-fixes-for-linus' of git://tesla.tglx.de/git/linux-2.6-tip 

* 'sched-fixes-for-linus' of git://tesla.tglx.de/git/linux-2.6-tip:
  sched: Fix a memory leak in __sdt_free()
  sched: Move blk_schedule_flush_plug() out of __schedule()
  sched: Separate the scheduler entry for preemption
parents b0fb4222 feff8fa0

kernel/sched.c

+26 −15
Original line number Diff line number Diff line
@@ -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 @@ asmlinkage void __sched schedule(void) 
				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 @@ asmlinkage void __sched schedule(void) 
	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));

		}