diff options
Diffstat (limited to 'include/asm-i386/semaphore.h')
| -rw-r--r-- | include/asm-i386/semaphore.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/include/asm-i386/semaphore.h b/include/asm-i386/semaphore.h index ef4c558da..827c53192 100644 --- a/include/asm-i386/semaphore.h +++ b/include/asm-i386/semaphore.h @@ -238,11 +238,18 @@ struct rw_semaphore { #define __RWSEM_DEBUG_INIT /* */ #endif -#define __RWSEM_INITIALIZER(name) \ -{ ATOMIC_INIT(RW_LOCK_BIAS), 0, 0, 0, 0, __WAIT_QUEUE_HEAD_INITIALIZER((name).wait), \ +#define __RWSEM_INITIALIZER(name,count) \ +{ ATOMIC_INIT(count), 0, 0, 0, 0, __WAIT_QUEUE_HEAD_INITIALIZER((name).wait), \ __WAIT_QUEUE_HEAD_INITIALIZER((name).write_bias_wait) \ __SEM_DEBUG_INIT(name) __RWSEM_DEBUG_INIT } +#define __DECLARE_RWSEM_GENERIC(name,count) \ + struct rw_semaphore name = __RWSEM_INITIALIZER(name,count) + +#define DECLARE_RWSEM(name) __DECLARE_RWSEM_GENERIC(name,RW_LOCK_BIAS) +#define DECLARE_RWSEM_READ_LOCKED(name) __DECLARE_RWSEM_GENERIC(name,RW_LOCK_BIAS-1) +#define DECLARE_RWSEM_WRITE_LOCKED(name) __DECLARE_RWSEM_GENERIC(name,0) + extern inline void init_rwsem(struct rw_semaphore *sem) { atomic_set(&sem->count, RW_LOCK_BIAS); |