diff --git a/arch/powerpc/include/asm/topology.h b/arch/powerpc/include/asm/topology.h
index 6a7e7251cc0292deb2a87d1b3718e5c77ab23ec2..d1c1d312f808be51843ce553a8ed2c2cad1adb31 100644
--- a/arch/powerpc/include/asm/topology.h
+++ b/arch/powerpc/include/asm/topology.h
@@ -28,6 +28,12 @@ struct device_node;
  */
 #define RECLAIM_DISTANCE 10
 
+/*
+ * Avoid creating an extra level of balancing (SD_ALLNODES) on the largest
+ * POWER7 boxes which have a maximum of 32 nodes.
+ */
+#define SD_NODES_PER_DOMAIN 32
+
 #include <asm/mmzone.h>
 
 static inline int cpu_to_node(int cpu)