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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
| commit | 76cb841cb886eef6b3bee341a2266c76578724ad (patch) | |
| tree | f5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /sound/core/seq/seq_lock.h | |
| parent | Initial commit. (diff) | |
| download | linux-upstream.tar.xz linux-upstream.zip | |
Adding upstream version 4.19.249.upstream/4.19.249upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'sound/core/seq/seq_lock.h')
| -rw-r--r-- | sound/core/seq/seq_lock.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/sound/core/seq/seq_lock.h b/sound/core/seq/seq_lock.h new file mode 100644 index 000000000..a973860eb --- /dev/null +++ b/sound/core/seq/seq_lock.h @@ -0,0 +1,22 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __SND_SEQ_LOCK_H +#define __SND_SEQ_LOCK_H + +#include <linux/sched.h> + +typedef atomic_t snd_use_lock_t; + +/* initialize lock */ +#define snd_use_lock_init(lockp) atomic_set(lockp, 0) + +/* increment lock */ +#define snd_use_lock_use(lockp) atomic_inc(lockp) + +/* release lock */ +#define snd_use_lock_free(lockp) atomic_dec(lockp) + +/* wait until all locks are released */ +void snd_use_lock_sync_helper(snd_use_lock_t *lock, const char *file, int line); +#define snd_use_lock_sync(lockp) snd_use_lock_sync_helper(lockp, __BASE_FILE__, __LINE__) + +#endif /* __SND_SEQ_LOCK_H */ |