tag	line	file	source code
PROC_PID_CMDLINE	817	fs/proc/array.c	case PROC_PID_CMDLINE:
PROC_PID_CMDLINE	62	fs/proc/base.c	{ PROC_PID_CMDLINE,  7, "cmdline" },
PROC_PID_CMDLINE	225	fs/proc/inode.c	case PROC_PID_CMDLINE: