diff options
| author | Linus Walleij <[email protected]> | 2019-10-22 16:05:13 +0200 |
|---|---|---|
| committer | Linus Walleij <[email protected]> | 2019-10-22 16:05:13 +0200 |
| commit | 3bf864e2507aae0bb24c1a360f409b4a746abd2b (patch) | |
| tree | f12db6bec93568284f8fa37f6c6c7808f5392a91 /include/linux/bitops.h | |
| parent | e543b3f5bb1d7dc39c2628e2932c625670913436 (diff) | |
| parent | 7d194c2100ad2a6dded545887d02754948ca5241 (diff) | |
Merge tag 'v5.4-rc4' into devel
Linux 5.4-rc4
Diffstat (limited to 'include/linux/bitops.h')
| -rw-r--r-- | include/linux/bitops.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/bitops.h b/include/linux/bitops.h index cf074bce3eb3..c94a9ff9f082 100644 --- a/include/linux/bitops.h +++ b/include/linux/bitops.h @@ -4,6 +4,13 @@ #include <asm/types.h> #include <linux/bits.h> +/* Set bits in the first 'n' bytes when loaded from memory */ +#ifdef __LITTLE_ENDIAN +# define aligned_byte_mask(n) ((1UL << 8*(n))-1) +#else +# define aligned_byte_mask(n) (~0xffUL << (BITS_PER_LONG - 8 - 8*(n))) +#endif + #define BITS_PER_TYPE(type) (sizeof(type) * BITS_PER_BYTE) #define BITS_TO_LONGS(nr) DIV_ROUND_UP(nr, BITS_PER_TYPE(long)) |