diff options
Diffstat (limited to 'include/asm-arm26/semaphore.h')
| -rw-r--r-- | include/asm-arm26/semaphore.h | 100 |
1 files changed, 0 insertions, 100 deletions
diff --git a/include/asm-arm26/semaphore.h b/include/asm-arm26/semaphore.h deleted file mode 100644 index 1fda54375ed8..000000000000 --- a/include/asm-arm26/semaphore.h +++ /dev/null | |||
| @@ -1,100 +0,0 @@ | |||
| 1 | /* | ||
| 2 | * linux/include/asm-arm26/semaphore.h | ||
| 3 | */ | ||
| 4 | #ifndef __ASM_ARM_SEMAPHORE_H | ||
| 5 | #define __ASM_ARM_SEMAPHORE_H | ||
| 6 | |||
| 7 | #include <linux/linkage.h> | ||
| 8 | #include <linux/spinlock.h> | ||
| 9 | #include <linux/wait.h> | ||
| 10 | #include <linux/rwsem.h> | ||
| 11 | |||
| 12 | #include <asm/atomic.h> | ||
| 13 | #include <asm/locks.h> | ||
| 14 | |||
| 15 | struct semaphore { | ||
| 16 | atomic_t count; | ||
| 17 | int sleepers; | ||
| 18 | wait_queue_head_t wait; | ||
| 19 | }; | ||
| 20 | |||
| 21 | #define __SEMAPHORE_INIT(name, n) \ | ||
| 22 | { \ | ||
| 23 | .count = ATOMIC_INIT(n), \ | ||
| 24 | .sleepers = 0, \ | ||
| 25 | .wait = __WAIT_QUEUE_HEAD_INITIALIZER((name).wait), \ | ||
| 26 | } | ||
| 27 | |||
| 28 | #define __DECLARE_SEMAPHORE_GENERIC(name,count) \ | ||
| 29 | struct semaphore name = __SEMAPHORE_INIT(name,count) | ||
| 30 | |||
| 31 | #define DECLARE_MUTEX(name) __DECLARE_SEMAPHORE_GENERIC(name,1) | ||
| 32 | #define DECLARE_MUTEX_LOCKED(name) __DECLARE_SEMAPHORE_GENERIC(name,0) | ||
| 33 | |||
| 34 | static inline void sema_init(struct semaphore *sem, int val) | ||
| 35 | { | ||
| 36 | atomic_set(&sem->count, val); | ||
| 37 | sem->sleepers = 0; | ||
| 38 | init_waitqueue_head(&sem->wait); | ||
| 39 | } | ||
| 40 | |||
| 41 | static inline void init_MUTEX(struct semaphore *sem) | ||
| 42 | { | ||
| 43 | sema_init(sem, 1); | ||
| 44 | } | ||
| 45 | |||
| 46 | static inline void init_MUTEX_LOCKED(struct semaphore *sem) | ||
| 47 | { | ||
| 48 | sema_init(sem, 0); | ||
| 49 | } | ||
| 50 | |||
| 51 | /* | ||
| 52 | * special register calling convention | ||
| 53 | */ | ||
| 54 | asmlinkage void __down_failed(void); | ||
| 55 | asmlinkage int __down_interruptible_failed(void); | ||
| 56 | asmlinkage int __down_trylock_failed(void); | ||
| 57 | asmlinkage void __up_wakeup(void); | ||
| 58 | |||
| 59 | extern void __down(struct semaphore * sem); | ||
| 60 | extern int __down_interruptible(struct semaphore * sem); | ||
| 61 | extern int __down_trylock(struct semaphore * sem); | ||
| 62 | extern void __up(struct semaphore * sem); | ||
| 63 | |||
| 64 | /* | ||
| 65 | * This is ugly, but we want the default case to fall through. | ||
| 66 | * "__down" is the actual routine that waits... | ||
| 67 | */ | ||
| 68 | static inline void down(struct semaphore * sem) | ||
| 69 | { | ||
| 70 | might_sleep(); | ||
| 71 | __down_op(sem, __down_failed); | ||
| 72 | } | ||
| 73 | |||
| 74 | /* | ||
| 75 | * This is ugly, but we want the default case to fall through. | ||
| 76 | * "__down_interruptible" is the actual routine that waits... | ||
| 77 | */ | ||
| 78 | static inline int down_interruptible (struct semaphore * sem) | ||
| 79 | { | ||
| 80 | might_sleep(); | ||
| 81 | return __down_op_ret(sem, __down_interruptible_failed); | ||
| 82 | } | ||
| 83 | |||
| 84 | static inline int down_trylock(struct semaphore *sem) | ||
| 85 | { | ||
| 86 | return __down_op_ret(sem, __down_trylock_failed); | ||
| 87 | } | ||
| 88 | |||
| 89 | /* | ||
| 90 | * Note! This is subtle. We jump to wake people up only if | ||
| 91 | * the semaphore was negative (== somebody was waiting on it). | ||
| 92 | * The default case (no contention) will result in NO | ||
| 93 | * jumps for both down() and up(). | ||
| 94 | */ | ||
| 95 | static inline void up(struct semaphore * sem) | ||
| 96 | { | ||
| 97 | __up_op(sem, __up_wakeup); | ||
| 98 | } | ||
| 99 | |||
| 100 | #endif | ||
