CPUTIME_STEAL
return local_clock() - kcpustat_this_cpu->cpustat[CPUTIME_STEAL];
nsecs_to_jiffies(kcpustat_cpu(i).cpustat[CPUTIME_STEAL]);
steal += kcpustat_cpu(cpu).cpustat[CPUTIME_STEAL];
busy_time += kcpustat.cpustat[CPUTIME_STEAL];
steal += cpustat[CPUTIME_STEAL];
steal = cpustat[CPUTIME_STEAL];
cpustat[CPUTIME_STEAL] += cputime;