taglinefilesource code
cpu_user120fs/proc/array.ckstat.cpu_user,
cpu_user123fs/proc/array.cjiffies - (kstat.cpu_user + kstat.cpu_nice + kstat.cpu_system),
cpu_user13include/linux/kernel_stat.hunsigned int cpu_user, cpu_nice, cpu_system;
cpu_user659kernel/sched.ckstat.cpu_user++;