cpu_bind_thread
err = cpu_bind_thread(tp, PBIND_NONE, &obind, &berr);
extern int cpu_bind_thread(kthread_t *tp, processorid_t bind,
ret = cpu_bind_thread(curthread, bind, &obind, &err);
ret = cpu_bind_thread(tp,
i = cpu_bind_thread(tp, bind, obind, error);