diff --git a/arch/mips/kernel/irixelf.c b/arch/mips/kernel/irixelf.c
index 10d3644e360863b1133a07fbb85b06880cc124c3..ab12c8f0151852e74a66f781fe875ffc362b2368 100644
--- a/arch/mips/kernel/irixelf.c
+++ b/arch/mips/kernel/irixelf.c
@@ -999,8 +999,6 @@ static inline int maydump(struct vm_area_struct *vma)
 	return 1;
 }
 
-#define roundup(x, y)  ((((x)+((y)-1))/(y))*(y))
-
 /* An ELF note in memory. */
 struct memelfnote
 {
diff --git a/drivers/scsi/aic7xxx/aic79xx_osm.h b/drivers/scsi/aic7xxx/aic79xx_osm.h
index 9e871de2383564816c7ac703966b4d8ecf24600c..601340d84410a04ee6e25f615d523eae1a457f5a 100644
--- a/drivers/scsi/aic7xxx/aic79xx_osm.h
+++ b/drivers/scsi/aic7xxx/aic79xx_osm.h
@@ -93,7 +93,6 @@
 #endif
 
 /********************************** Misc Macros *******************************/
-#define	roundup(x, y)   ((((x)+((y)-1))/(y))*(y))
 #define	powerof2(x)	((((x)-1)&(x))==0)
 
 /************************* Forward Declarations *******************************/
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index f42e64210ee5de985d976507cd0d9acbd42fa86d..672a3b90bc556628874d5ab1494b654dc486a74b 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -1185,8 +1185,6 @@ static int maydump(struct vm_area_struct *vma)
 	return 1;
 }
 
-#define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y))
-
 /* An ELF note in memory */
 struct memelfnote
 {
diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c
index 036d14d836271b9cba65ca044988614c091e6019..8d6d85d7400f829c44444fa5143858eedd193735 100644
--- a/fs/proc/kcore.c
+++ b/fs/proc/kcore.c
@@ -42,8 +42,6 @@ const struct file_operations proc_kcore_operations = {
 #define	kc_offset_to_vaddr(o) ((o) + PAGE_OFFSET)
 #endif
 
-#define roundup(x, y)  ((((x)+((y)-1))/(y))*(y))
-
 /* An ELF note in memory */
 struct memelfnote
 {
diff --git a/fs/xfs/linux-2.6/xfs_linux.h b/fs/xfs/linux-2.6/xfs_linux.h
index 8c021dc57d1f80552df7ea2229558da053312be5..a13f75c1a936a7f2c0b3ab1d74fc75fc2a146b51 100644
--- a/fs/xfs/linux-2.6/xfs_linux.h
+++ b/fs/xfs/linux-2.6/xfs_linux.h
@@ -215,7 +215,6 @@ BUFFER_FNS(PrivateStart, unwritten);
 #define MIN(a,b)	(min(a,b))
 #define MAX(a,b)	(max(a,b))
 #define howmany(x, y)	(((x)+((y)-1))/(y))
-#define roundup(x, y)	((((x)+((y)-1))/(y))*(y))
 
 /*
  * Various platform dependent calls that don't fit anywhere else
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 5c1ec1f84eab93eea32a8d173486ff2cbcd5036b..181c69cad4e3a45dca58bd6c50c2ae3d3e95f5b1 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -33,6 +33,7 @@ extern const char linux_banner[];
 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
 #define ALIGN(x,a) (((x)+(a)-1)&~((a)-1))
 #define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f))
+#define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y))
 
 #define	KERN_EMERG	"<0>"	/* system is unusable			*/
 #define	KERN_ALERT	"<1>"	/* action must be taken immediately	*/