1#ifndef __SND_SEQ_LOCK_H 2#define __SND_SEQ_LOCK_H 3 4#include <linux/sched.h> 5 6#if defined(CONFIG_SMP) || defined(CONFIG_SND_DEBUG) 7 8typedef atomic_t snd_use_lock_t; 9 10/* initialize lock */ 11#define snd_use_lock_init(lockp) atomic_set(lockp, 0) 12 13/* increment lock */ 14#define snd_use_lock_use(lockp) atomic_inc(lockp) 15 16/* release lock */ 17#define snd_use_lock_free(lockp) atomic_dec(lockp) 18 19/* wait until all locks are released */ 20void snd_use_lock_sync_helper(snd_use_lock_t *lock, const char *file, int line); 21#define snd_use_lock_sync(lockp) snd_use_lock_sync_helper(lockp, __BASE_FILE__, __LINE__) 22 23#else /* SMP || CONFIG_SND_DEBUG */ 24 25typedef spinlock_t snd_use_lock_t; /* dummy */ 26#define snd_use_lock_init(lockp) /**/ 27#define snd_use_lock_use(lockp) /**/ 28#define snd_use_lock_free(lockp) /**/ 29#define snd_use_lock_sync(lockp) /**/ 30 31#endif /* SMP || CONFIG_SND_DEBUG */ 32 33#endif /* __SND_SEQ_LOCK_H */ 34