diff --git a/arch/powerpc/lib/rheap.c b/arch/powerpc/lib/rheap.c
index 4bbda6b2be45..6c5c5dd183ee 100644
--- a/arch/powerpc/lib/rheap.c
+++ b/arch/powerpc/lib/rheap.c
@@ -14,6 +14,7 @@
  */
 #include <linux/types.h>
 #include <linux/errno.h>
+#include <linux/kernel.h>
 #include <linux/mm.h>
 #include <linux/slab.h>
 
@@ -671,7 +672,7 @@ void rh_dump(rh_info_t * info)
 	int maxnr;
 	int i, nr;
 
-	maxnr = sizeof(st) / sizeof(st[0]);
+	maxnr = ARRAY_SIZE(st);
 
 	printk(KERN_INFO
 	       "info @0x%p (%d slots empty / %d max)\n",
diff --git a/arch/powerpc/xmon/ppc-opc.c b/arch/powerpc/xmon/ppc-opc.c
index 5d841f4b3530..af3780e52e76 100644
--- a/arch/powerpc/xmon/ppc-opc.c
+++ b/arch/powerpc/xmon/ppc-opc.c
@@ -21,6 +21,7 @@
    02110-1301, USA.  */
 
 #include <linux/stddef.h>
+#include <linux/kernel.h>
 #include "nonstdio.h"
 #include "ppc.h"
 
@@ -4932,8 +4933,7 @@ const struct powerpc_opcode powerpc_opcodes[] = {
 
 };
 
-const int powerpc_num_opcodes =
-  sizeof (powerpc_opcodes) / sizeof (powerpc_opcodes[0]);
+const int powerpc_num_opcodes = ARRAY_SIZE(powerpc_opcodes);
 
 /* The macro table.  This is only used by the assembler.  */
 
@@ -4989,5 +4989,4 @@ const struct powerpc_macro powerpc_macros[] = {
 { "clrlslwi.",4,  PPCCOM,	"rlwinm. %0,%1,%3,(%2)-(%3),31-(%3)" },
 };
 
-const int powerpc_num_macros =
-  sizeof (powerpc_macros) / sizeof (powerpc_macros[0]);
+const int powerpc_num_macros = ARRAY_SIZE(powerpc_macros);
diff --git a/arch/powerpc/xmon/spu-opc.c b/arch/powerpc/xmon/spu-opc.c
index efffde9edc6e..530df3d6d7b2 100644
--- a/arch/powerpc/xmon/spu-opc.c
+++ b/arch/powerpc/xmon/spu-opc.c
@@ -18,6 +18,7 @@
    with this program; if not, write to the Free Software Foundation, Inc.,
    51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
 
+#include <linux/kernel.h>
 #include "spu.h"
 
 /* This file holds the Spu opcode table */
@@ -40,5 +41,4 @@ const struct spu_opcode spu_opcodes[] = {
 #undef APUOPFB
 };
 
-const int spu_num_opcodes =
-  sizeof (spu_opcodes) / sizeof (spu_opcodes[0]);
+const int spu_num_opcodes = ARRAY_SIZE(spu_opcodes);