diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2011-07-17 22:08:38 +0200 |
|---|---|---|
| committer | Clark Williams <williams@redhat.com> | 2012-04-10 16:37:20 -0500 |
| commit | b8d82d9ddf287d40d5bd2779d3ead53d5203d8f6 (patch) | |
| tree | 447fe75054f7decd3ab297c7f68266c168ed7065 /include | |
| parent | 334496ec71158b16e72f856e281d0a60f0dd1240 (diff) | |
timer-handle-idle-trylock-in-get-next-timer-irq.patch
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/spinlock_rt.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/include/linux/spinlock_rt.h b/include/linux/spinlock_rt.h index 205ca95a849e..3b555b4b52cf 100644 --- a/include/linux/spinlock_rt.h +++ b/include/linux/spinlock_rt.h @@ -51,7 +51,17 @@ extern void __lockfunc __rt_spin_unlock(struct rt_mutex *lock); #define spin_lock_irq(lock) spin_lock(lock) -#define spin_trylock(lock) __cond_lock(lock, rt_spin_trylock(lock)) +#define spin_do_trylock(lock) __cond_lock(lock, rt_spin_trylock(lock)) + +#define spin_trylock(lock) \ +({ \ + int __locked; \ + migrate_disable(); \ + __locked = spin_do_trylock(lock); \ + if (!__locked) \ + migrate_enable(); \ + __locked; \ +}) #ifdef CONFIG_LOCKDEP # define spin_lock_nested(lock, subclass) \ |