tag	line	file	source code
routine	6	include/linux/interrupt.h	void (*routine)(void *);
routine	737	kernel/chr_drv/keyboard.c	bh_base[KEYBOARD_BH].routine = kbd_bh;
routine	1883	kernel/chr_drv/serial.c	bh_base[SERIAL_BH].routine = do_softint;
routine	1646	kernel/chr_drv/tty_io.c	bh_base[TTY_BH].routine = tty_bh_routine;
routine	102	kernel/irq.c	fn = bh->routine;
routine	333	kernel/irq.c	bh_base[i].routine = NULL;
routine	1730	net/inet/sock.c	bh_base[INET_BH].routine = inet_bh;