num_node_state
nr_online_nodes = num_node_state(N_ONLINE);
nr_online_nodes = num_node_state(N_ONLINE);
#define num_online_nodes() num_node_state(N_ONLINE)
#define num_possible_nodes() num_node_state(N_POSSIBLE)
.max_threads = num_node_state(N_MEMORY),
atomic_set(&pgdat_init_n_undone, num_node_state(N_MEMORY));
if (num_node_state(N_MEMORY) == 1)