tag	line	file	source code
SIGHUP	254	kernel/chr_drv/tty_io.c	kill_sl(tty->session,SIGHUP,1);
SIGHUP	484	kernel/chr_drv/tty_ioctl.c	kill_pg(tty->pgrp, SIGHUP, 0);
SIGHUP	361	kernel/exit.c	kill_pg(current->pgrp,SIGHUP,1);
SIGHUP	398	kernel/exit.c	kill_pg(p->pgrp,SIGHUP,1);
SIGHUP	410	kernel/exit.c	kill_pg(tty->pgrp, SIGHUP, 1);