19 _raw_compare_and_swap(unsigned int *lock, unsigned int old, unsigned int new)  in _raw_compare_and_swap()  argument
21 	return __sync_bool_compare_and_swap(lock, old, new);  in _raw_compare_and_swap()
133 	unsigned int old = ACCESS_ONCE(rw->lock);  in arch_read_trylock_once()  local
134 	return likely((int) old >= 0 &&  in arch_read_trylock_once()
135 		      _raw_compare_and_swap(&rw->lock, old, old + 1));  in arch_read_trylock_once()
140 	unsigned int old = ACCESS_ONCE(rw->lock);  in arch_write_trylock_once()  local
141 	return likely(old == 0 &&  in arch_write_trylock_once()
183 	unsigned int old;  in arch_read_lock()  local
185 	old = __RAW_LOCK(&rw->lock, 1, __RAW_OP_ADD);  in arch_read_lock()
186 	if ((int) old < 0)  in arch_read_lock()
197 	unsigned int old;  in arch_write_lock()  local
199 	old = __RAW_LOCK(&rw->lock, 0x80000000, __RAW_OP_OR);  in arch_write_lock()
200 	if (old != 0)  in arch_write_lock()
201 		_raw_write_lock_wait(rw, old);  in arch_write_lock()
224 	unsigned int old;  in arch_read_unlock()  local
227 		old = ACCESS_ONCE(rw->lock);  in arch_read_unlock()
228 	} while (!_raw_compare_and_swap(&rw->lock, old, old - 1));  in arch_read_unlock()