* Unlocked value: 0
* Locked value: 1
*/
-typedef struct {
- volatile unsigned int lock;
-#ifdef CONFIG_PREEMPT
- unsigned int break_lock;
-#endif
-} spinlock_t;
-#define SPIN_LOCK_UNLOCKED (spinlock_t) { 0 }
+#define __raw_spin_is_locked(x) ((x)->lock != 0)
+#define __raw_spin_unlock_wait(lock) \
+ do { while (__raw_spin_is_locked(lock)) cpu_relax(); } while (0)
-#define spin_lock_init(x) do { *(x) = SPIN_LOCK_UNLOCKED; } while (0)
-#define spin_is_locked(x) ((x)->lock != 0)
-#define spin_unlock_wait(x) do { barrier(); } while (spin_is_locked(x))
-#define _raw_spin_lock_flags(lock, flags) _raw_spin_lock(lock)
+#define __raw_spin_lock_flags(lock, flags) __raw_spin_lock(lock)
-static inline void _raw_spin_lock(spinlock_t *lock)
+static inline void __raw_spin_lock(raw_spinlock_t *lock)
{
unsigned long tmp;
smp_mb();
}
-static inline int _raw_spin_trylock(spinlock_t *lock)
+static inline int __raw_spin_trylock(raw_spinlock_t *lock)
{
unsigned long tmp;
}
}
-static inline void _raw_spin_unlock(spinlock_t *lock)
+static inline void __raw_spin_unlock(raw_spinlock_t *lock)
{
smp_mb();
/*
* RWLOCKS
- */
-typedef struct {
- volatile unsigned int lock;
-#ifdef CONFIG_PREEMPT
- unsigned int break_lock;
-#endif
-} rwlock_t;
-
-#define RW_LOCK_UNLOCKED (rwlock_t) { 0 }
-#define rwlock_init(x) do { *(x) = RW_LOCK_UNLOCKED; } while (0)
-#define rwlock_is_locked(x) (*((volatile unsigned int *)(x)) != 0)
-
-/*
+ *
+ *
* Write locks are easy - we just set bit 31. When unlocking, we can
* just write zero since the lock is exclusively held.
*/
-static inline void _raw_write_lock(rwlock_t *rw)
+#define rwlock_is_locked(x) (*((volatile unsigned int *)(x)) != 0)
+
+static inline void __raw_write_lock(rwlock_t *rw)
{
unsigned long tmp;
smp_mb();
}
-static inline int _raw_write_trylock(rwlock_t *rw)
+static inline int __raw_write_trylock(rwlock_t *rw)
{
unsigned long tmp;
}
}
-static inline void _raw_write_unlock(rwlock_t *rw)
+static inline void __raw_write_unlock(raw_rwlock_t *rw)
{
smp_mb();
* currently active. However, we know we won't have any write
* locks.
*/
-static inline void _raw_read_lock(rwlock_t *rw)
+static inline void __raw_read_lock(raw_rwlock_t *rw)
{
unsigned long tmp, tmp2;
smp_mb();
}
-static inline void _raw_read_unlock(rwlock_t *rw)
+static inline void __raw_read_unlock(rwlock_t *rw)
{
unsigned long tmp, tmp2;
: "cc");
}
-#define _raw_read_trylock(lock) generic_raw_read_trylock(lock)
+#define __raw_read_trylock(lock) generic__raw_read_trylock(lock)
#endif /* __ASM_SPINLOCK_H */