tag	line	file	source code
SIG_IGN	578	fs/exec.c	if (current->sigaction[i].sa_handler != SIG_IGN)
SIG_IGN	258	kernel/chr_drv/tty_io.c	(current->sigaction[sig-1].sa_handler == SIG_IGN));
SIG_IGN	177	kernel/sched.c	if (sa->sa_handler == SIG_IGN)