+ /* Update sibling maps */
+ base = cpu_first_thread_in_core(cpu);
+ for (i = 0; i < threads_per_core; i++) {
+ if (cpu_is_offline(base + i))
+ continue;
+ cpu_set(cpu, per_cpu(cpu_sibling_map, base + i));
+ cpu_set(base + i, per_cpu(cpu_sibling_map, cpu));
+
+ /* cpu_core_map should be a superset of
+ * cpu_sibling_map even if we don't have cache
+ * information, so update the former here, too.
+ */
+ cpu_set(cpu, per_cpu(cpu_core_map, base +i));
+ cpu_set(base + i, per_cpu(cpu_core_map, cpu));
+ }
+ l2_cache = cpu_to_l2cache(cpu);
+ for_each_online_cpu(i) {
+ struct device_node *np = cpu_to_l2cache(i);
+ if (!np)
+ continue;
+ if (np == l2_cache) {
+ cpu_set(cpu, per_cpu(cpu_core_map, i));
+ cpu_set(i, per_cpu(cpu_core_map, cpu));
+ }
+ of_node_put(np);
+ }
+ of_node_put(l2_cache);