CPUTIME_GUEST_NICE
guest_nice += cpustat[CPUTIME_GUEST_NICE];
guest_nice = cpustat[CPUTIME_GUEST_NICE];
cpustat[CPUTIME_GUEST_NICE] += vtime->gtime + delta;
cpustat[CPUTIME_GUEST_NICE] += cputime;
case CPUTIME_GUEST_NICE: