extern void smp_alloc_memory(void);
extern int pic_mode;
extern int smp_num_siblings;
-extern cpumask_t cpu_sibling_map[];
-extern cpumask_t cpu_core_map[];
+DECLARE_PER_CPU(cpumask_t, cpu_sibling_map);
+DECLARE_PER_CPU(cpumask_t, cpu_core_map);
extern void (*mtrr_hook) (void);
extern void zap_low_mappings (void);