diff options
| author | Mark Brown <broonie@kernel.org> | 2018-08-28 19:03:57 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2018-08-28 19:03:57 +0100 |
| commit | 6e2d6b2728fcb408eabd7991804f8cb33ff59f20 (patch) | |
| tree | 18dc3fc5bd55fa9ff92430e4ab8353de6c5c0e55 /include/linux/bitops.h | |
| parent | 6f0a256253f48095ba2e5bcdfbed41f21643c105 (diff) | |
| parent | 5b394b2ddf0347bef56e50c69a58773c94343ff3 (diff) | |
Merge tag 'v4.19-rc1' into asoc-4.19
Linux 4.19-rc1
Diffstat (limited to 'include/linux/bitops.h')
| -rw-r--r-- | include/linux/bitops.h | 25 |
1 files changed, 3 insertions, 22 deletions
diff --git a/include/linux/bitops.h b/include/linux/bitops.h index 4cac4e1a72ff..7ddb1349394d 100644 --- a/include/linux/bitops.h +++ b/include/linux/bitops.h @@ -2,29 +2,10 @@ #ifndef _LINUX_BITOPS_H #define _LINUX_BITOPS_H #include <asm/types.h> +#include <linux/bits.h> -#ifdef __KERNEL__ -#define BIT(nr) (1UL << (nr)) -#define BIT_ULL(nr) (1ULL << (nr)) -#define BIT_MASK(nr) (1UL << ((nr) % BITS_PER_LONG)) -#define BIT_WORD(nr) ((nr) / BITS_PER_LONG) -#define BIT_ULL_MASK(nr) (1ULL << ((nr) % BITS_PER_LONG_LONG)) -#define BIT_ULL_WORD(nr) ((nr) / BITS_PER_LONG_LONG) -#define BITS_PER_BYTE 8 -#define BITS_TO_LONGS(nr) DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(long)) -#endif - -/* - * Create a contiguous bitmask starting at bit position @l and ending at - * position @h. For example - * GENMASK_ULL(39, 21) gives us the 64bit vector 0x000000ffffe00000. - */ -#define GENMASK(h, l) \ - (((~0UL) - (1UL << (l)) + 1) & (~0UL >> (BITS_PER_LONG - 1 - (h)))) - -#define GENMASK_ULL(h, l) \ - (((~0ULL) - (1ULL << (l)) + 1) & \ - (~0ULL >> (BITS_PER_LONG_LONG - 1 - (h)))) +#define BITS_PER_TYPE(type) (sizeof(type) * BITS_PER_BYTE) +#define BITS_TO_LONGS(nr) DIV_ROUND_UP(nr, BITS_PER_TYPE(long)) extern unsigned int __sw_hweight8(unsigned int w); extern unsigned int __sw_hweight16(unsigned int w); |