Lines Matching defs:lock
4 * 'Generic' ticket-lock implementation.
8 * to a test-and-set lock.
33 static __always_inline void arch_spin_lock(arch_spinlock_t *lock)
35 u32 val = atomic_fetch_add(1<<16, lock);
49 atomic_cond_read_acquire(lock, ticket == (u16)VAL);
53 static __always_inline bool arch_spin_trylock(arch_spinlock_t *lock)
55 u32 old = atomic_read(lock);
60 return atomic_try_cmpxchg(lock, &old, old + (1<<16)); /* SC, for RCsc */
63 static __always_inline void arch_spin_unlock(arch_spinlock_t *lock)
65 u16 *ptr = (u16 *)lock + IS_ENABLED(CONFIG_CPU_BIG_ENDIAN);
66 u32 val = atomic_read(lock);
71 static __always_inline int arch_spin_value_unlocked(arch_spinlock_t lock)
73 u32 val = lock.counter;
78 static __always_inline int arch_spin_is_locked(arch_spinlock_t *lock)
80 arch_spinlock_t val = READ_ONCE(*lock);
85 static __always_inline int arch_spin_is_contended(arch_spinlock_t *lock)
87 u32 val = atomic_read(lock);