From 555047df6a79bae4748a72ff8c2e42e242a2a361 Mon Sep 17 00:00:00 2001 From: Caleb Connolly Date: Mon, 15 Jul 2024 12:08:01 +0200 Subject: [PATCH] linux/bitmap.h: add bitmap_empty helper Import this function from Linux as of 6.10-rc6 Reviewed-by: Tom Rini Acked-by: Sumit Garg Signed-off-by: Caleb Connolly --- include/linux/bitmap.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/linux/bitmap.h b/include/linux/bitmap.h index 0a8503af9f..40ca2212cb 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) { -- 2.39.5