tag	line	file	source code
uptime	90	fs/proc/array.c	unsigned long uptime;
uptime	93	fs/proc/array.c	uptime = jiffies;
uptime	96	fs/proc/array.c	uptime / HZ,
uptime	97	fs/proc/array.c	uptime % HZ,
uptime	71	include/linux/kernel.h	long uptime;      /* Seconds since boot */
uptime	28	kernel/info.c	val.uptime = jiffies / HZ;