[PATCH] x86-64: Export smp_call_function_single

smp_call_function() is exported, makes sense to export this one too.
Signed-off-by: Andi Kleen <ak@suse.de>

arch/x86_64/kernel/smp.c

@@ -385,6 +385,7 @@ int smp_call_function_single (int cpu, void (*func) (void *info), void *info,
 	put_cpu();
 	return 0;
 }
+EXPORT_SYMBOL(smp_call_function_single);
 
 /*
  * this function sends a 'generic call function' IPI to all other CPUs