diff --git a/tools/include/linux/mm.h b/tools/include/linux/mm.h
index a03d9bba5151..43be27bcc897 100644
--- a/tools/include/linux/mm.h
+++ b/tools/include/linux/mm.h
@@ -11,8 +11,6 @@
 
 #define PHYS_ADDR_MAX	(~(phys_addr_t)0)
 
-#define __ALIGN_KERNEL(x, a)		__ALIGN_KERNEL_MASK(x, (typeof(x))(a) - 1)
-#define __ALIGN_KERNEL_MASK(x, mask)	(((x) + (mask)) & ~(mask))
 #define ALIGN(x, a)			__ALIGN_KERNEL((x), (a))
 #define ALIGN_DOWN(x, a)		__ALIGN_KERNEL((x) - ((a) - 1), (a))