x86: merge extern variables definitions

move extern definitions that are the same between smp_{32,64}.h
to smp.h

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

include/asm-x86/smp.h

@@ -1,6 +1,12 @@
 #ifndef _ASM_X86_SMP_H_
 #define _ASM_X86_SMP_H_
 #ifndef __ASSEMBLY__
+#include <linux/cpumask.h>
+
+extern cpumask_t cpu_callout_map;
+
+extern int smp_num_siblings;
+extern unsigned int num_processors;
 
 #ifdef CONFIG_X86_32
 # include "smp_32.h"

include/asm-x86/smp_32.h

@@ -16,12 +16,8 @@
 # endif
 #endif
 
-extern cpumask_t cpu_callout_map;
 extern cpumask_t cpu_callin_map;
 
-extern int smp_num_siblings;
-extern unsigned int num_processors;
-
 extern void (*mtrr_hook) (void);
 extern void zap_low_mappings (void);
 

include/asm-x86/smp_64.h

@@ -13,12 +13,8 @@
 #include <asm/pda.h>
 #include <asm/thread_info.h>
 
-extern cpumask_t cpu_callout_map;
 extern cpumask_t cpu_initialized;
 
-extern int smp_num_siblings;
-extern unsigned int num_processors;
-
 extern int smp_call_function_mask(cpumask_t mask, void (*func)(void *),
 				  void *info, int wait);