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authorThomas Gleixner <tglx@linutronix.de>2009-11-17 14:54:03 +0100
committerThomas Gleixner <tglx@linutronix.de>2009-12-14 23:55:33 +0100
commit1d615482547584b9a8bb6316a58fed6ce90dd9ff (patch)
tree21dae4b70acb3ce0bdaeeaee1dbd970be41d26e2 /kernel/sched.c
parentfe841226bd954fba4fd79f037a876053fe9c3217 (diff)
downloadblackbird-op-linux-1d615482547584b9a8bb6316a58fed6ce90dd9ff.tar.gz
blackbird-op-linux-1d615482547584b9a8bb6316a58fed6ce90dd9ff.zip
sched: Convert pi_lock to raw_spinlock
Convert locks which cannot be sleeping locks in preempt-rt to raw_spinlocks. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <peterz@infradead.org> Acked-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sched.c')
-rw-r--r--kernel/sched.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/kernel/sched.c b/kernel/sched.c
index 01c5016e57f1..18cceeecce35 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -6323,7 +6323,7 @@ recheck:
* make sure no PI-waiters arrive (or leave) while we are
* changing the priority of the task:
*/
- spin_lock_irqsave(&p->pi_lock, flags);
+ raw_spin_lock_irqsave(&p->pi_lock, flags);
/*
* To be able to change p->policy safely, the apropriate
* runqueue lock must be held.
@@ -6333,7 +6333,7 @@ recheck:
if (unlikely(oldpolicy != -1 && oldpolicy != p->policy)) {
policy = oldpolicy = -1;
__task_rq_unlock(rq);
- spin_unlock_irqrestore(&p->pi_lock, flags);
+ raw_spin_unlock_irqrestore(&p->pi_lock, flags);
goto recheck;
}
update_rq_clock(rq);
@@ -6357,7 +6357,7 @@ recheck:
check_class_changed(rq, p, prev_class, oldprio, running);
}
__task_rq_unlock(rq);
- spin_unlock_irqrestore(&p->pi_lock, flags);
+ raw_spin_unlock_irqrestore(&p->pi_lock, flags);
rt_mutex_adjust_pi(p);
@@ -9624,7 +9624,7 @@ void __init sched_init(void)
#endif
#ifdef CONFIG_RT_MUTEXES
- plist_head_init(&init_task.pi_waiters, &init_task.pi_lock);
+ plist_head_init_raw(&init_task.pi_waiters, &init_task.pi_lock);
#endif
/*
@@ -9749,13 +9749,13 @@ void normalize_rt_tasks(void)
continue;
}
- spin_lock(&p->pi_lock);
+ raw_spin_lock(&p->pi_lock);
rq = __task_rq_lock(p);
normalize_task(rq, p);
__task_rq_unlock(rq);
- spin_unlock(&p->pi_lock);
+ raw_spin_unlock(&p->pi_lock);
} while_each_thread(g, p);
read_unlock_irqrestore(&tasklist_lock, flags);
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