X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Fasm-cris%2Fsemaphore.h;h=53f548b791c18ebb8456c1b593a0f38b95e557cb;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=9ee66b9d531eec7a922c85bd470f739f70c938ef;hpb=9213980e6a70d8473e0ffd4b39ab5b6caaba9ff5;p=linux-2.6.git diff --git a/include/asm-cris/semaphore.h b/include/asm-cris/semaphore.h index 9ee66b9d5..53f548b79 100644 --- a/include/asm-cris/semaphore.h +++ b/include/asm-cris/semaphore.h @@ -18,30 +18,18 @@ * CRIS semaphores, implemented in C-only so far. */ -int printk(const char *fmt, ...); - struct semaphore { atomic_t count; atomic_t waking; wait_queue_head_t wait; -#if WAITQUEUE_DEBUG - long __magic; -#endif }; -#if WAITQUEUE_DEBUG -# define __SEM_DEBUG_INIT(name) , (long)&(name).__magic -#else -# define __SEM_DEBUG_INIT(name) -#endif - -#define __SEMAPHORE_INITIALIZER(name,count) \ - { ATOMIC_INIT(count), ATOMIC_INIT(0), \ - __WAIT_QUEUE_HEAD_INITIALIZER((name).wait) \ - __SEM_DEBUG_INIT(name) } - -#define __MUTEX_INITIALIZER(name) \ - __SEMAPHORE_INITIALIZER(name,1) +#define __SEMAPHORE_INITIALIZER(name, n) \ +{ \ + .count = ATOMIC_INIT(n), \ + .waking = ATOMIC_INIT(0), \ + .wait = __WAIT_QUEUE_HEAD_INITIALIZER((name).wait) \ +} #define __DECLARE_SEMAPHORE_GENERIC(name,count) \ struct semaphore name = __SEMAPHORE_INITIALIZER(name,count) @@ -49,17 +37,17 @@ struct semaphore { #define DECLARE_MUTEX(name) __DECLARE_SEMAPHORE_GENERIC(name,1) #define DECLARE_MUTEX_LOCKED(name) __DECLARE_SEMAPHORE_GENERIC(name,0) -extern inline void sema_init(struct semaphore *sem, int val) +static inline void sema_init(struct semaphore *sem, int val) { *sem = (struct semaphore)__SEMAPHORE_INITIALIZER((*sem),val); } -extern inline void init_MUTEX (struct semaphore *sem) +static inline void init_MUTEX (struct semaphore *sem) { sema_init(sem, 1); } -extern inline void init_MUTEX_LOCKED (struct semaphore *sem) +static inline void init_MUTEX_LOCKED (struct semaphore *sem) { sema_init(sem, 0); } @@ -71,21 +59,17 @@ extern void __up(struct semaphore * sem); /* notice - we probably can do cli/sti here instead of saving */ -extern inline void down(struct semaphore * sem) +static inline void down(struct semaphore * sem) { unsigned long flags; int failed; -#if WAITQUEUE_DEBUG - CHECK_MAGIC(sem->__magic); -#endif might_sleep(); /* atomically decrement the semaphores count, and if its negative, we wait */ - local_save_flags(flags); - local_irq_disable(); + cris_atomic_save(sem, flags); failed = --(sem->count.counter) < 0; - local_irq_restore(flags); + cris_atomic_restore(sem, flags); if(failed) { __down(sem); } @@ -97,42 +81,34 @@ extern inline void down(struct semaphore * sem) * returns negative for signalled and zero for semaphore acquired. */ -extern inline int down_interruptible(struct semaphore * sem) +static inline int down_interruptible(struct semaphore * sem) { unsigned long flags; int failed; -#if WAITQUEUE_DEBUG - CHECK_MAGIC(sem->__magic); -#endif might_sleep(); /* atomically decrement the semaphores count, and if its negative, we wait */ - local_save_flags(flags); - local_irq_disable(); + cris_atomic_save(sem, flags); failed = --(sem->count.counter) < 0; - local_irq_restore(flags); + cris_atomic_restore(sem, flags); if(failed) failed = __down_interruptible(sem); return(failed); } -extern inline int down_trylock(struct semaphore * sem) +static inline int down_trylock(struct semaphore * sem) { unsigned long flags; int failed; -#if WAITQUEUE_DEBUG - CHECK_MAGIC(sem->__magic); -#endif - - local_save_flags(flags); - local_irq_disable(); + cris_atomic_save(sem, flags); failed = --(sem->count.counter) < 0; - local_irq_restore(flags); + cris_atomic_restore(sem, flags); if(failed) failed = __down_trylock(sem); return(failed); + } /* @@ -141,20 +117,15 @@ extern inline int down_trylock(struct semaphore * sem) * The default case (no contention) will result in NO * jumps for both down() and up(). */ -extern inline void up(struct semaphore * sem) +static inline void up(struct semaphore * sem) { unsigned long flags; int wakeup; -#if WAITQUEUE_DEBUG - CHECK_MAGIC(sem->__magic); -#endif - /* atomically increment the semaphores count, and if it was negative, we wake people */ - local_save_flags(flags); - local_irq_disable(); + cris_atomic_save(sem, flags); wakeup = ++(sem->count.counter) <= 0; - local_irq_restore(flags); + cris_atomic_restore(sem, flags); if(wakeup) { __up(sem); }