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rtmutes: Convert rtmutex.lock to raw_spinlock

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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>
This commit is contained in:
Thomas Gleixner 2009-11-17 18:22:11 +01:00
parent 1d61548254
commit d209d74d52
3 changed files with 30 additions and 30 deletions
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6
kernel/futex.c
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@ -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;