percpu_down_read_trylock  124 drivers/bluetooth/hci_ldisc.c 	if (!percpu_down_read_trylock(&hu->proto_lock))
percpu_down_read_trylock 1676 fs/super.c     		ret = percpu_down_read_trylock(sb->s_writers.rw_sem + level-1);
percpu_down_read_trylock  298 kernel/cpu.c   	return percpu_down_read_trylock(&cpu_hotplug_lock);