Those seem quite useful, e.g. when defining bitmasks. Signed-off-by: Denis Orlov <[email protected]> --- include/linux/bitops.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/include/linux/bitops.h b/include/linux/bitops.h index d9a5a81a9c..a5f6ac6545 100644 --- a/include/linux/bitops.h +++ b/include/linux/bitops.h @@ -14,7 +14,11 @@ #define BIT_ULL_MASK(nr) (ULL(1) << ((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)) +#define BITS_PER_TYPE(type) (sizeof(type) * BITS_PER_BYTE) +#define BITS_TO_LONGS(nr) DIV_ROUND_UP(nr, BITS_PER_TYPE(long)) +#define BITS_TO_U64(nr) DIV_ROUND_UP(nr, BITS_PER_TYPE(u64)) +#define BITS_TO_U32(nr) DIV_ROUND_UP(nr, BITS_PER_TYPE(u32)) +#define BITS_TO_BYTES(nr) DIV_ROUND_UP(nr, BITS_PER_TYPE(char)) #endif /* -- 2.41.0
