43 die (const char *str, struct pt_regs *regs, long err)  in die()  function
49 	} die = {  in die()  local
50 		.lock =	__SPIN_LOCK_UNLOCKED(die.lock),  in die()
57 	if (die.lock_owner != cpu) {  in die()
59 		spin_lock_irq(&die.lock);  in die()
60 		die.lock_owner = cpu;  in die()
61 		die.lock_owner_depth = 0;  in die()
66 	if (++die.lock_owner_depth < 3) {  in die()
78 	die.lock_owner = -1;  in die()
80 	spin_unlock_irq(&die.lock);  in die()
96 		return die(str, regs, err);  in die_if_kernel()