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| author | Maxime Ripard <mripard@kernel.org> | 2026-02-23 12:09:45 +0300 |
|---|---|---|
| committer | Maxime Ripard <mripard@kernel.org> | 2026-02-23 12:09:45 +0300 |
| commit | c17ee635fd3a482b2ad2bf5e269755c2eae5f25e (patch) | |
| tree | e3f147462d8a9fd0cf2312c8cd3c5a94da15c3e4 /tools/include/linux/bitmap.h | |
| parent | 803ec1faf7c1823e6e3b1f2aaa81be18528c9436 (diff) | |
| parent | 6de23f81a5e08be8fbf5e8d7e9febc72a5b5f27f (diff) | |
| download | linux-c17ee635fd3a482b2ad2bf5e269755c2eae5f25e.tar.xz | |
Merge drm/drm-fixes into drm-misc-fixes
7.0-rc1 was just released, let's merge it to kick the new release cycle.
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Diffstat (limited to 'tools/include/linux/bitmap.h')
| -rw-r--r-- | tools/include/linux/bitmap.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/tools/include/linux/bitmap.h b/tools/include/linux/bitmap.h index 0d992245c600..250883090a5d 100644 --- a/tools/include/linux/bitmap.h +++ b/tools/include/linux/bitmap.h @@ -24,6 +24,10 @@ void __bitmap_set(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); +bool __bitmap_subset(const unsigned long *bitmap1, + const unsigned long *bitmap2, unsigned int nbits); +bool __bitmap_andnot(unsigned long *dst, const unsigned long *bitmap1, + const unsigned long *bitmap2, unsigned int nbits); #define BITMAP_FIRST_WORD_MASK(start) (~0UL << ((start) & (BITS_PER_LONG - 1))) #define BITMAP_LAST_WORD_MASK(nbits) (~0UL >> (-(nbits) & (BITS_PER_LONG - 1))) @@ -81,6 +85,15 @@ static inline void bitmap_or(unsigned long *dst, const unsigned long *src1, __bitmap_or(dst, src1, src2, nbits); } +static __always_inline +bool bitmap_andnot(unsigned long *dst, const unsigned long *src1, + const unsigned long *src2, unsigned int nbits) +{ + if (small_const_nbits(nbits)) + return (*dst = *src1 & ~(*src2) & BITMAP_LAST_WORD_MASK(nbits)) != 0; + return __bitmap_andnot(dst, src1, src2, nbits); +} + static inline unsigned long *bitmap_alloc(unsigned int nbits, gfp_t flags __maybe_unused) { return malloc(bitmap_size(nbits)); @@ -157,6 +170,15 @@ static inline bool bitmap_intersects(const unsigned long *src1, return __bitmap_intersects(src1, src2, nbits); } +static __always_inline +bool bitmap_subset(const unsigned long *src1, const unsigned long *src2, unsigned int nbits) +{ + if (small_const_nbits(nbits)) + return ! ((*src1 & ~(*src2)) & BITMAP_LAST_WORD_MASK(nbits)); + else + return __bitmap_subset(src1, src2, nbits); +} + static inline void bitmap_set(unsigned long *map, unsigned int start, unsigned int nbits) { if (__builtin_constant_p(nbits) && nbits == 1) |
