diff options
| author | Caleb Connolly <[email protected]> | 2024-07-15 12:08:01 +0200 |
|---|---|---|
| committer | Caleb Connolly <[email protected]> | 2024-07-26 01:28:09 +0200 |
| commit | 555047df6a79bae4748a72ff8c2e42e242a2a361 (patch) | |
| tree | a23a9460c7448b5409db8f9a3350cd0e6a3be853 /include/linux/bitmap.h | |
| parent | 1fbd0582a28d108c77d7f9135a7f2c3da2398b72 (diff) | |
linux/bitmap.h: add bitmap_empty helper
Import this function from Linux as of 6.10-rc6
Reviewed-by: Tom Rini <[email protected]>
Acked-by: Sumit Garg <[email protected]>
Signed-off-by: Caleb Connolly <[email protected]>
Diffstat (limited to 'include/linux/bitmap.h')
| -rw-r--r-- | include/linux/bitmap.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/bitmap.h b/include/linux/bitmap.h index 0a8503af9f1..40ca2212cb4 100644 --- a/include/linux/bitmap.h +++ b/include/linux/bitmap.h @@ -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) { |