1 #ifndef __TOOLS_LINUX_SPINLOCK_H
2 #define __TOOLS_LINUX_SPINLOCK_H
4 #include <linux/atomic.h>
10 #define __RAW_SPIN_LOCK_UNLOCKED(name) (raw_spinlock_t) { .count = 0 }
12 static inline void raw_spin_lock_init(raw_spinlock_t *lock)
14 smp_store_release(&lock->count, 0);
17 static inline void raw_spin_lock(raw_spinlock_t *lock)
19 while (xchg_acquire(&lock->count, 1))
23 static inline void raw_spin_unlock(raw_spinlock_t *lock)
25 smp_store_release(&lock->count, 0);
28 #define raw_spin_lock_irq(lock) raw_spin_lock(lock)
29 #define raw_spin_unlock_irq(lock) raw_spin_unlock(lock)
31 #define raw_spin_lock_irqsave(lock, flags) \
34 raw_spin_lock(lock); \
37 #define raw_spin_unlock_irqrestore(lock, flags) raw_spin_unlock(lock)
39 typedef raw_spinlock_t spinlock_t;
41 #define __SPIN_LOCK_UNLOCKED(name) __RAW_SPIN_LOCK_UNLOCKED(name)
43 #define DEFINE_SPINLOCK(x) spinlock_t x = __SPIN_LOCK_UNLOCKED(x)
45 #define spin_lock_init(lock) raw_spin_lock_init(lock)
46 #define spin_lock(lock) raw_spin_lock(lock)
47 #define spin_unlock(lock) raw_spin_unlock(lock)
49 #define spin_lock_nested(lock, n) spin_lock(lock)
51 #define spin_lock_bh(lock) raw_spin_lock(lock)
52 #define spin_unlock_bh(lock) raw_spin_unlock(lock)
54 #define spin_lock_irq(lock) raw_spin_lock(lock)
55 #define spin_unlock_irq(lock) raw_spin_unlock(lock)
57 #define spin_lock_irqsave(lock, flags) raw_spin_lock_irqsave(lock, flags)
58 #define spin_unlock_irqrestore(lock, flags) raw_spin_unlock_irqrestore(lock, flags)
60 #endif /* __TOOLS_LINUX_SPINLOCK_H */