diff options
Diffstat (limited to 'include/linux/bitops.h')
| -rw-r--r-- | include/linux/bitops.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/bitops.h b/include/linux/bitops.h index 638165f571d..69c1edb9fe5 100644 --- a/include/linux/bitops.h +++ b/include/linux/bitops.h @@ -2,12 +2,26 @@ #define _LINUX_BITOPS_H #include <asm/types.h> +#ifdef __KERNEL__ +#define BIT(nr) (1UL << (nr)) +#define BIT_MASK(nr) (1UL << ((nr) % BITS_PER_LONG)) +#define BIT_WORD(nr) ((nr) / BITS_PER_LONG) +#define BITS_TO_LONGS(nr) DIV_ROUND_UP(nr, BITS_PER_LONG) +#define BITS_PER_BYTE 8 +#endif + /* * Include this here because some architectures need generic_ffs/fls in * scope */ #include <asm/bitops.h> +#define for_each_bit(bit, addr, size) \ + for ((bit) = find_first_bit((addr), (size)); \ + (bit) < (size); \ + (bit) = find_next_bit((addr), (size), (bit) + 1)) + + static __inline__ int get_bitmask_order(unsigned int count) { int order; |