diff options
Diffstat (limited to 'tools/include/linux/bitmap.h')
| -rw-r--r-- | tools/include/linux/bitmap.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/tools/include/linux/bitmap.h b/tools/include/linux/bitmap.h index 1cdded0041a8..43c1c5021e4b 100644 --- a/tools/include/linux/bitmap.h +++ b/tools/include/linux/bitmap.h @@ -11,6 +11,8 @@ int __bitmap_weight(const unsigned long *bitmap, int bits); void __bitmap_or(unsigned long *dst, const unsigned long *bitmap1, const unsigned long *bitmap2, int bits); +int __bitmap_and(unsigned long *dst, const unsigned long *bitmap1, + const unsigned long *bitmap2, unsigned int bits); #define BITMAP_FIRST_WORD_MASK(start) (~0UL << ((start) & (BITS_PER_LONG - 1))) @@ -85,4 +87,19 @@ static inline unsigned long *bitmap_alloc(int nbits) size_t bitmap_scnprintf(unsigned long *bitmap, int nbits, char *buf, size_t size); +/** + * bitmap_and - Do logical and on bitmaps + * @dst: resulting bitmap + * @src1: operand 1 + * @src2: operand 2 + * @nbits: size of bitmap + */ +static inline int bitmap_and(unsigned long *dst, const unsigned long *src1, + const unsigned long *src2, unsigned int nbits) +{ + if (small_const_nbits(nbits)) + return (*dst = *src1 & *src2 & BITMAP_LAST_WORD_MASK(nbits)) != 0; + return __bitmap_and(dst, src1, src2, nbits); +} + #endif /* _PERF_BITOPS_H */ |