rtmutes: Convert rtmutex.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>

1 files changed, 3 insertions, 3 deletions

diff --git a/kernel/futex.c b/kernel/futex.c
index 320b369d20b5..8e3c3ffe1b9a 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -760,7 +760,7 @@ static int wake_futex_pi(u32 __user *uaddr, u32 uval, struct futex_q *this)
         if (!pi_state)
                 return -EINVAL;
 
-        spin_lock(&pi_state->pi_mutex.wait_lock);
+        raw_spin_lock(&pi_state->pi_mutex.wait_lock);
         new_owner = rt_mutex_next_owner(&pi_state->pi_mutex);
 
         /*
@@ -789,7 +789,7 @@ static int wake_futex_pi(u32 __user *uaddr, u32 uval, struct futex_q *this)
                 else if (curval != uval)
                         ret = -EINVAL;
                 if (ret) {
-                        spin_unlock(&pi_state->pi_mutex.wait_lock);
+                        raw_spin_unlock(&pi_state->pi_mutex.wait_lock);
                         return ret;
                 }
         }
@@ -805,7 +805,7 @@ static int wake_futex_pi(u32 __user *uaddr, u32 uval, struct futex_q *this)
         pi_state->owner = new_owner;
         raw_spin_unlock_irq(&new_owner->pi_lock);
 
-        spin_unlock(&pi_state->pi_mutex.wait_lock);
+        raw_spin_unlock(&pi_state->pi_mutex.wait_lock);
         rt_mutex_unlock(&pi_state->pi_mutex);
 
         return 0;