diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c
index 6490e4981261bc83c5e2b94bbb6432f95437eb63..7218bccd176628a63dfd51da6b731f607e9cab17 100644
--- a/arch/x86/kernel/process_32.c
+++ b/arch/x86/kernel/process_32.c
@@ -56,6 +56,7 @@
 #include <asm/cpu.h>
 #include <asm/kdebug.h>
 #include <asm/syscalls.h>
+#include <asm/smp.h>
 
 asmlinkage void ret_from_fork(void) __asm__("ret_from_fork");
 
diff --git a/include/asm-x86/smp.h b/include/asm-x86/smp.h
index 3c877f74f279454cd579cf71530ef3bd051b75ff..3a1480648f65b068b61ba30b7398f2b8e3c0e50b 100644
--- a/include/asm-x86/smp.h
+++ b/include/asm-x86/smp.h
@@ -34,6 +34,9 @@ extern cpumask_t cpu_initialized;
 DECLARE_PER_CPU(cpumask_t, cpu_sibling_map);
 DECLARE_PER_CPU(cpumask_t, cpu_core_map);
 DECLARE_PER_CPU(u16, cpu_llc_id);
+#ifdef CONFIG_X86_32
+DECLARE_PER_CPU(int, cpu_number);
+#endif
 
 DECLARE_EARLY_PER_CPU(u16, x86_cpu_to_apicid);
 DECLARE_EARLY_PER_CPU(u16, x86_bios_cpu_apicid);
@@ -142,7 +145,6 @@ extern unsigned disabled_cpus __cpuinitdata;
  * from the initial startup. We map APIC_BASE very early in page_setup(),
  * so this is correct in the x86 case.
  */
-DECLARE_PER_CPU(int, cpu_number);
 #define raw_smp_processor_id() (x86_read_percpu(cpu_number))
 extern int safe_smp_processor_id(void);