tag	line	file	source code
SIGHUP	353	drivers/char/tty_io.c	kill_sl(tty->session,SIGHUP,1);
SIGHUP	407	drivers/char/tty_io.c	kill_pg(tty->pgrp, SIGHUP, priv);
SIGHUP	435	kernel/exit.c	kill_pg(current->pgrp,SIGHUP,1);
SIGHUP	472	kernel/exit.c	kill_pg(p->pgrp,SIGHUP,1);