60 	int old = 0;  in arch_spin_trylock_once()  local
63 	return likely(arch_try_cmpxchg(&lp->lock, &old, SPINLOCK_LOCKVAL));  in arch_spin_trylock_once()
110 	int old;  in arch_read_lock()  local
112 	old = __atomic_add(1, &rw->cnts);  in arch_read_lock()
113 	if (old & 0xffff0000)  in arch_read_lock()
124 	int old = 0;  in arch_write_lock()  local
126 	if (!arch_try_cmpxchg(&rw->cnts, &old, 0x30000))  in arch_write_lock()
138 	int old;  in arch_read_trylock()  local
140 	old = READ_ONCE(rw->cnts);  in arch_read_trylock()
141 	return (!(old & 0xffff0000) && arch_try_cmpxchg(&rw->cnts, &old, old + 1));  in arch_read_trylock()
146 	int old;  in arch_write_trylock()  local
148 	old = READ_ONCE(rw->cnts);  in arch_write_trylock()
149 	return !old && arch_try_cmpxchg(&rw->cnts, &old, 0x30000);  in arch_write_trylock()