From 555047df6a79bae4748a72ff8c2e42e242a2a361 Mon Sep 17 00:00:00 2001
From: Caleb Connolly <caleb.connolly@linaro.org>
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 <trini@konsulko.com>
Acked-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
---
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