sched_next_online
next_sched_cpu = sched_next_online(0, next_sched_cpu);
next_sched_cpu = sched_next_online(pid[i], next_sched_cpu);
assert(sched_next_online(0, 0) != -1);
assert(sched_next_online(0, 0) != -1);
assert(sched_next_online(0, &next_cpu) != -1);
assert(sched_next_online(0, &next_cpu) != -1);
assert(sched_next_online(0, &next_cpu) != -1);
assert(sched_next_online(0, &next_cpu) != -1);
assert(sched_next_online(0, &next_cpu) != -1);
while (sched_next_online(0, &next_cpu) != -1) {
assert(sched_next_online(0, &next_cpu) != -1);
assert(sched_next_online(0, &next_cpu) != -1);
assert(sched_next_online(0, &next_cpu) != -1);