diff options
Diffstat (limited to 'include/linux/bitops.h')
| -rw-r--r-- | include/linux/bitops.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/bitops.h b/include/linux/bitops.h index b9fb8ee3308..939e80bdbef 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 |