diff options
Diffstat (limited to 'lib/bitmap.c')
| -rw-r--r-- | lib/bitmap.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/bitmap.c b/lib/bitmap.c index 09522af227f17..b97692854966e 100644 --- a/lib/bitmap.c +++ b/lib/bitmap.c @@ -348,6 +348,13 @@ unsigned int __bitmap_weight_and(const unsigned long *bitmap1, } EXPORT_SYMBOL(__bitmap_weight_and); +unsigned int __bitmap_weight_andnot(const unsigned long *bitmap1, + const unsigned long *bitmap2, unsigned int bits) +{ + return BITMAP_WEIGHT(bitmap1[idx] & ~bitmap2[idx], bits); +} +EXPORT_SYMBOL(__bitmap_weight_andnot); + void __bitmap_set(unsigned long *map, unsigned int start, int len) { unsigned long *p = map + BIT_WORD(start); |