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linux/bitmap.h: add bitmap_empty helper

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Import this function from Linux as of 6.10-rc6

Reviewed-by: Tom Rini <trini@konsulko.com>
Acked-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
This commit is contained in:
Caleb Connolly
2024-07-15 12:08:01 +02:00
parent 1fbd0582a2
commit 555047df6a
1 changed files with 8 additions and 0 deletions
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8
include/linux/bitmap.h
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@@ -196,6 +196,14 @@ static inline void bitmap_fill(unsigned long *dst, unsigned int nbits)
}
}
static inline bool bitmap_empty(const unsigned long *src, unsigned int nbits)
{
if (small_const_nbits(nbits))
return !(*src & BITMAP_LAST_WORD_MASK(nbits));
return find_first_bit(src, nbits) == nbits;
}
static inline void bitmap_or(unsigned long *dst, const unsigned long *src1,
const unsigned long *src2, unsigned int nbits)
{