NICE_0_LOAD
imbalance = scale_load_down(NICE_0_LOAD) *
tg->shares = NICE_0_LOAD;
update_load_set(&se->load, NICE_0_LOAD);
__sched_group_set_shares(tg, NICE_0_LOAD);
if (unlikely(se->load.weight != NICE_0_LOAD))
delta = __calc_delta(delta, NICE_0_LOAD, &se->load);
#define ROOT_TASK_GROUP_LOAD NICE_0_LOAD