clock_tick_set
clock_tick_set_t *clock_tick_set;
clock_tick_set = kmem_zalloc(sizeof (clock_tick_set_t) * n, KM_SLEEP);
csp = &clock_tick_set[i];
csp = &clock_tick_set[i];
csp = &clock_tick_set[set];
csp = &clock_tick_set[set];