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lib/bitmap: change type of bitmap_weight to unsigned long

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bitmap_weight() doesn't return negative values, so change it's type
to unsigned long. It may help compiler to generate better code and
catch bugs.

Signed-off-by: Yury Norov <yury.norov@gmail.com>
This commit is contained in:
Yury Norov
2022-07-01 05:54:25 -07:00
parent e2863a7859
commit 4dea97f863
12 changed files with 19 additions and 19 deletions
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5
include/linux/bitmap.h
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@@ -163,7 +163,7 @@ bool __bitmap_intersects(const unsigned long *bitmap1,
const unsigned long *bitmap2, unsigned int nbits);
bool __bitmap_subset(const unsigned long *bitmap1,
const unsigned long *bitmap2, unsigned int nbits);
int __bitmap_weight(const unsigned long *bitmap, unsigned int nbits);
unsigned long __bitmap_weight(const unsigned long *bitmap, unsigned int nbits);
void __bitmap_set(unsigned long *map, unsigned int start, int len);
void __bitmap_clear(unsigned long *map, unsigned int start, int len);
@@ -431,7 +431,8 @@ static inline bool bitmap_full(const unsigned long *src, unsigned int nbits)
return find_first_zero_bit(src, nbits) == nbits;
}
static __always_inline int bitmap_weight(const unsigned long *src, unsigned int nbits)
static __always_inline
unsigned long bitmap_weight(const unsigned long *src, unsigned int nbits)
{
if (small_const_nbits(nbits))
return hweight_long(*src & BITMAP_LAST_WORD_MASK(nbits));