[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>
diff --git a/arch/x86_64/kernel/smp.c b/arch/x86_64/kernel/smp.c
index 9f74c88..1bf0e09 100644
--- a/arch/x86_64/kernel/smp.c
+++ b/arch/x86_64/kernel/smp.c
@@ -385,6 +385,7 @@
 	put_cpu();
 	return 0;
 }
+EXPORT_SYMBOL(smp_call_function_single);
 
 /*
  * this function sends a 'generic call function' IPI to all other CPUs