tag	line	file	source code
SOFT_IRQ	200	kernel/chr_drv/serial.c	#ifndef SOFT_IRQ
SOFT_IRQ	374	kernel/chr_drv/serial.c	#ifdef SOFT_IRQ
SOFT_IRQ	440	kernel/chr_drv/serial.c	#ifndef SOFT_IRQ
SOFT_IRQ	450	kernel/chr_drv/serial.c	#ifndef SOFT_IRQ