tag	line	file	source code
SIGHUP	270	drivers/char/tty_io.c	kill_sl(tty->session,SIGHUP,1);
SIGHUP	601	drivers/char/tty_ioctl.c	kill_pg(tty->pgrp, SIGHUP, 0);
SIGHUP	414	kernel/exit.c	kill_pg(current->pgrp,SIGHUP,1);
SIGHUP	451	kernel/exit.c	kill_pg(p->pgrp,SIGHUP,1);
SIGHUP	463	kernel/exit.c	kill_pg(tty->pgrp, SIGHUP, 1);