[PATCH] arch/x86/mm/numa.c: quiet sparse noise when CONFIG_X86_64 is not set

[H Hartley Sweeten <hartleys@visionengravers.com>]

If CONFIG_X86_64 is not set the function __node_distance is not declared in
<asm/topology.h>. This results in the following sparse noise.

warning: symbol '__node_distance' was not declared. Should it be static?

Fix this by putting an #ifdef around the function.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: David Rientjes <rientjes@google.com>

---

diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c
index fbeaaf4..11c60a7 100644
--- a/arch/x86/mm/numa.c
+++ b/arch/x86/mm/numa.c
@@ -455,6 +455,7 @@ void __init numa_set_distance(int from, int to, int distance)
 	numa_distance[from * numa_distance_cnt + to] = distance;
 }
 
+#ifdef CONFIG_X86_64
 int __node_distance(int from, int to)
 {
 	if (from >= numa_distance_cnt || to >= numa_distance_cnt)
@@ -462,6 +463,7 @@ int __node_distance(int from, int to)
 	return numa_distance[from * numa_distance_cnt + to];
 }
 EXPORT_SYMBOL(__node_distance);
+#endif
 
 /*
  * Sanity check to catch more bad NUMA configurations (they are amazingly