diff --git a/include/linux/bitops.h b/include/linux/bitops.h
index b9fb8ee..939e80b 100644
--- a/include/linux/bitops.h
+++ b/include/linux/bitops.h
@@ -2,6 +2,14 @@
 #define _LINUX_BITOPS_H
 #include <asm/types.h>
 
+#ifdef	__KERNEL__
+#define BIT_MASK(nr)		(1UL << ((nr) % BITS_PER_LONG))
+#define BIT_WORD(nr)		((nr) / BITS_PER_LONG)
+#define BITS_TO_TYPE(nr, t)	(((nr)+(t)-1)/(t))
+#define BITS_TO_LONGS(nr)	BITS_TO_TYPE(nr, BITS_PER_LONG)
+#define BITS_PER_BYTE		8
+#endif
+
 /*
  * Include this here because some architectures need generic_ffs/fls in
  * scope