Lines Matching defs:lock
26 #define arch_spin_is_locked(x) ((x)->lock <= 0)
28 static inline void arch_spin_lock(arch_spinlock_t *lock)
30 while (!__sl_cas(&lock->lock, 1, 0));
33 static inline void arch_spin_unlock(arch_spinlock_t *lock)
35 __sl_cas(&lock->lock, 0, 1);
38 static inline int arch_spin_trylock(arch_spinlock_t *lock)
40 return __sl_cas(&lock->lock, 1, 0);
48 * needs to get a irq-safe write-lock, but readers can get non-irqsafe
55 do old = rw->lock;
56 while (!old || __sl_cas(&rw->lock, old, old-1) != old);
62 do old = rw->lock;
63 while (__sl_cas(&rw->lock, old, old+1) != old);
68 while (__sl_cas(&rw->lock, RW_LOCK_BIAS, 0) != RW_LOCK_BIAS);
73 __sl_cas(&rw->lock, 0, RW_LOCK_BIAS);
79 do old = rw->lock;
80 while (old && __sl_cas(&rw->lock, old, old-1) != old);
86 return __sl_cas(&rw->lock, RW_LOCK_BIAS, 0) == RW_LOCK_BIAS;