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| author |   James Morris <james.l.morris@oracle.com> | 2015-11-23 22:46:28 +1100 |
|---|---|---|
| committer | James Morris <james.l.morris@oracle.com> | 2015-11-23 22:46:28 +1100 |
| commit | ebd68df3f24b318d391d15c458d6f43f340ba36a (patch) | |
| tree | f0277bc4b853abe5db1d30fa4e10b05bba7f2ac5 /arch/tile/include/asm/word-at-a-time.h | |
| parent | security/capability.h: cap_issubset/isclear can be boolean (diff) | |
| parent | Linux 4.4-rc2 (diff) | |
| download | linux-dev-ebd68df3f24b318d391d15c458d6f43f340ba36a.tar.xz linux-dev-ebd68df3f24b318d391d15c458d6f43f340ba36a.zip | |
Sync to Linus v4.4-rc2 for LSM developers.
Diffstat (limited to 'arch/tile/include/asm/word-at-a-time.h')
| -rw-r--r-- | arch/tile/include/asm/word-at-a-time.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/tile/include/asm/word-at-a-time.h b/arch/tile/include/asm/word-at-a-time.h index 9e5ce0d7b292..b66a693c2c34 100644 --- a/arch/tile/include/asm/word-at-a-time.h +++ b/arch/tile/include/asm/word-at-a-time.h @@ -6,7 +6,7 @@ struct word_at_a_time { /* unused */ }; #define WORD_AT_A_TIME_CONSTANTS {} -/* Generate 0x01 byte values for non-zero bytes using a SIMD instruction. */ +/* Generate 0x01 byte values for zero bytes using a SIMD instruction. */ static inline unsigned long has_zero(unsigned long val, unsigned long *data, const struct word_at_a_time *c) { @@ -33,4 +33,10 @@ static inline long find_zero(unsigned long mask) #endif } +#ifdef __BIG_ENDIAN +#define zero_bytemask(mask) (~1ul << (63 - __builtin_clzl(mask))) +#else +#define zero_bytemask(mask) ((2ul << __builtin_ctzl(mask)) - 1) +#endif + #endif /* _ASM_WORD_AT_A_TIME_H */ |