diff options
Diffstat (limited to 'include/linux/bitmap.h')
| -rw-r--r-- | include/linux/bitmap.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/bitmap.h b/include/linux/bitmap.h index 80e8ecda..db2dfdb2 100644 --- a/include/linux/bitmap.h +++ b/include/linux/bitmap.h @@ -135,4 +135,12 @@ static inline unsigned long find_next_zero_bit(const unsigned long *addr, unsign #define find_first_bit(addr, size) find_next_bit((addr), (size), 0) #define find_first_zero_bit(addr, size) find_next_zero_bit((addr), (size), 0) +static inline bool bitmap_empty(const unsigned long *src, unsigned nbits) +{ + if (small_const_nbits(nbits)) + return ! (*src & BITMAP_LAST_WORD_MASK(nbits)); + + return find_first_bit(src, nbits) == nbits; +} + #endif /* _PERF_BITOPS_H */ |