diff --git a/include/asm-i386/processor.h b/include/asm-i386/processor.h
index 7149784..359bb01 100644
--- a/include/asm-i386/processor.h
+++ b/include/asm-i386/processor.h
@@ -98,6 +98,7 @@
 #endif
 
 extern	int phys_proc_id[NR_CPUS];
+extern	int cpu_core_id[NR_CPUS];
 extern char ignore_fpu_irq;
 
 extern void identify_cpu(struct cpuinfo_x86 *);
diff --git a/include/asm-i386/smp.h b/include/asm-i386/smp.h
index dd14912..e03a206 100644
--- a/include/asm-i386/smp.h
+++ b/include/asm-i386/smp.h
@@ -35,6 +35,7 @@
 extern int pic_mode;
 extern int smp_num_siblings;
 extern cpumask_t cpu_sibling_map[];
+extern cpumask_t cpu_core_map[];
 
 extern void smp_flush_tlb(void);
 extern void smp_message_irq(int cpl, void *dev_id, struct pt_regs *regs);