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-rw-r--r--include/linux/bitops.h8
1 files changed, 8 insertions, 0 deletions
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