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| author | Andrii Nakryiko <andrii@kernel.org> | 2024-08-13 13:52:30 -0700 |
|---|---|---|
| committer | Andrii Nakryiko <andrii@kernel.org> | 2024-08-13 13:52:30 -0700 |
| commit | 50470d3899cdf06fd58def74dec87f31e13cda6f (patch) | |
| tree | 9d4d04c0c394f079127752d6d5b796aa33b903ca /tools/include/linux/bitmap.h | |
| parent | 4a4c013d3385b0db85dc361203dc42ff048b6fd6 (diff) | |
| parent | de12c3391bce10504c0e7bd767516c74110cfce1 (diff) | |
Merge remote-tracking branch 'vfs/stable-struct_fd'
Merge Al Viro's struct fd refactorings.
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Diffstat (limited to 'tools/include/linux/bitmap.h')
| -rw-r--r-- | tools/include/linux/bitmap.h | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/tools/include/linux/bitmap.h b/tools/include/linux/bitmap.h index 210c13b1b857..2a7f260ef9dc 100644 --- a/tools/include/linux/bitmap.h +++ b/tools/include/linux/bitmap.h @@ -19,7 +19,7 @@ bool __bitmap_and(unsigned long *dst, const unsigned long *bitmap1, const unsigned long *bitmap2, unsigned int bits); bool __bitmap_equal(const unsigned long *bitmap1, const unsigned long *bitmap2, unsigned int bits); -void bitmap_clear(unsigned long *map, unsigned int start, int len); +void __bitmap_clear(unsigned long *map, unsigned int start, int len); bool __bitmap_intersects(const unsigned long *bitmap1, const unsigned long *bitmap2, unsigned int bits); @@ -150,4 +150,19 @@ static inline bool bitmap_intersects(const unsigned long *src1, return __bitmap_intersects(src1, src2, nbits); } +static inline void bitmap_clear(unsigned long *map, unsigned int start, + unsigned int nbits) +{ + if (__builtin_constant_p(nbits) && nbits == 1) + __clear_bit(start, map); + else if (small_const_nbits(start + nbits)) + *map &= ~GENMASK(start + nbits - 1, start); + else if (__builtin_constant_p(start & BITMAP_MEM_MASK) && + IS_ALIGNED(start, BITMAP_MEM_ALIGNMENT) && + __builtin_constant_p(nbits & BITMAP_MEM_MASK) && + IS_ALIGNED(nbits, BITMAP_MEM_ALIGNMENT)) + memset((char *)map + start / 8, 0, nbits / 8); + else + __bitmap_clear(map, start, nbits); +} #endif /* _TOOLS_LINUX_BITMAP_H */ |