#define cpu_to_node(cpu) (cpu_to_node[cpu])
#define parent_node(node) (node)
-#define node_to_first_cpu(node) (__ffs(node_to_cpumask[node]))
+#define node_to_first_cpu(node) (first_cpu(node_to_cpumask[node]))
#define node_to_cpumask(node) (node_to_cpumask[node])
#define pcibus_to_node(bus) ((long)(bus->sysdata))
#define pcibus_to_cpumask(bus) node_to_cpumask(pcibus_to_node(bus));