mirror of https://gitee.com/openkylin/linux.git
34 lines
901 B
C
34 lines
901 B
C
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#ifndef __SND_SEQ_LOCK_H
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#define __SND_SEQ_LOCK_H
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#include <linux/sched.h>
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#if defined(CONFIG_SMP) || defined(CONFIG_SND_DEBUG)
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typedef atomic_t snd_use_lock_t;
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/* initialize lock */
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#define snd_use_lock_init(lockp) atomic_set(lockp, 0)
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/* increment lock */
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#define snd_use_lock_use(lockp) atomic_inc(lockp)
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/* release lock */
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#define snd_use_lock_free(lockp) atomic_dec(lockp)
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/* wait until all locks are released */
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void snd_use_lock_sync_helper(snd_use_lock_t *lock, const char *file, int line);
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#define snd_use_lock_sync(lockp) snd_use_lock_sync_helper(lockp, __BASE_FILE__, __LINE__)
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#else /* SMP || CONFIG_SND_DEBUG */
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typedef spinlock_t snd_use_lock_t; /* dummy */
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#define snd_use_lock_init(lockp) /**/
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#define snd_use_lock_use(lockp) /**/
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#define snd_use_lock_free(lockp) /**/
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#define snd_use_lock_sync(lockp) /**/
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#endif /* SMP || CONFIG_SND_DEBUG */
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#endif /* __SND_SEQ_LOCK_H */
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