diff options
author | Kent Overstreet <kent.overstreet@linux.dev> | 2024-01-16 17:00:02 -0500 |
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committer | Kent Overstreet <kent.overstreet@linux.dev> | 2024-01-16 17:17:23 -0500 |
commit | b5fd066153c40a70a29caa1ea7987723ab687763 (patch) | |
tree | 6d43a8b0a90d549a54c65565ac96c92b3e84b594 /include/linux/spinlock.h | |
parent | 06ff8b55b70fda44d91b31b5511fafd1680a8934 (diff) |
Move c_src dirs back to toplevel
We just wanted c sourcefiles out of the top level, not c source
directories.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'include/linux/spinlock.h')
-rw-r--r-- | include/linux/spinlock.h | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h new file mode 100644 index 00000000..6c4a623c --- /dev/null +++ b/include/linux/spinlock.h @@ -0,0 +1,65 @@ +#ifndef __TOOLS_LINUX_SPINLOCK_H +#define __TOOLS_LINUX_SPINLOCK_H + +#include <linux/atomic.h> +#include <pthread.h> + +typedef struct { + pthread_mutex_t lock; +} raw_spinlock_t; + +#define __RAW_SPIN_LOCK_UNLOCKED(name) (raw_spinlock_t) { .lock = PTHREAD_MUTEX_INITIALIZER } + +static inline void raw_spin_lock_init(raw_spinlock_t *lock) +{ + pthread_mutex_init(&lock->lock, NULL); +} + +static inline bool raw_spin_trylock(raw_spinlock_t *lock) +{ + return !pthread_mutex_trylock(&lock->lock); +} + +static inline void raw_spin_lock(raw_spinlock_t *lock) +{ + pthread_mutex_lock(&lock->lock); +} + +static inline void raw_spin_unlock(raw_spinlock_t *lock) +{ + pthread_mutex_unlock(&lock->lock); +} + +#define raw_spin_lock_irq(lock) raw_spin_lock(lock) +#define raw_spin_unlock_irq(lock) raw_spin_unlock(lock) + +#define raw_spin_lock_irqsave(lock, flags) \ +do { \ + flags = 0; \ + raw_spin_lock(lock); \ +} while (0) + +#define raw_spin_unlock_irqrestore(lock, flags) raw_spin_unlock(lock) + +typedef raw_spinlock_t spinlock_t; + +#define __SPIN_LOCK_UNLOCKED(name) __RAW_SPIN_LOCK_UNLOCKED(name) + +#define DEFINE_SPINLOCK(x) spinlock_t x = __SPIN_LOCK_UNLOCKED(x) + +#define spin_lock_init(lock) raw_spin_lock_init(lock) +#define spin_lock(lock) raw_spin_lock(lock) +#define spin_unlock(lock) raw_spin_unlock(lock) + +#define spin_lock_nested(lock, n) spin_lock(lock) + +#define spin_lock_bh(lock) raw_spin_lock(lock) +#define spin_unlock_bh(lock) raw_spin_unlock(lock) + +#define spin_lock_irq(lock) raw_spin_lock(lock) +#define spin_unlock_irq(lock) raw_spin_unlock(lock) + +#define spin_lock_irqsave(lock, flags) raw_spin_lock_irqsave(lock, flags) +#define spin_unlock_irqrestore(lock, flags) raw_spin_unlock_irqrestore(lock, flags) + +#endif /* __TOOLS_LINUX_SPINLOCK_H */ |