calcru
calcru(p, &utime, &stime);
calcru(p, &ru.ru_utime, &ru.ru_stime);
calcru(p, &ru.ru_utime, &ru.ru_stime);
calcru(p, &ut, &st);
calcru(p, &rup->ru_utime, &rup->ru_stime);
calcru(p, &kp->ki_rusage.ru_utime, &kp->ki_rusage.ru_stime);
calcru(p, up, sp);
calcru(p, &user, &sys);
calcru(p, &user, &sys);
void calcru(struct proc *p, struct timeval *up, struct timeval *sp);