diff options
Diffstat (limited to 'include/qemu/bitmap.h')
| -rw-r--r-- | include/qemu/bitmap.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/qemu/bitmap.h b/include/qemu/bitmap.h index c318da12d7..509eeddece 100644 --- a/include/qemu/bitmap.h +++ b/include/qemu/bitmap.h @@ -39,6 +39,8 @@ * bitmap_clear(dst, pos, nbits) Clear specified bit area * bitmap_test_and_clear_atomic(dst, pos, nbits) Test and clear area * bitmap_find_next_zero_area(buf, len, pos, n, mask) Find bit free area + * bitmap_to_le(dst, src, nbits) Convert bitmap to little endian + * bitmap_from_le(dst, src, nbits) Convert bitmap from little endian */ /* @@ -82,6 +84,7 @@ int slow_bitmap_andnot(unsigned long *dst, const unsigned long *bitmap1, const unsigned long *bitmap2, long bits); int slow_bitmap_intersects(const unsigned long *bitmap1, const unsigned long *bitmap2, long bits); +long slow_bitmap_count_one(const unsigned long *bitmap, long nbits); static inline unsigned long *bitmap_try_new(long nbits) { @@ -216,6 +219,15 @@ static inline int bitmap_intersects(const unsigned long *src1, } } +static inline long bitmap_count_one(const unsigned long *bitmap, long nbits) +{ + if (small_nbits(nbits)) { + return ctpopl(*bitmap & BITMAP_LAST_WORD_MASK(nbits)); + } else { + return slow_bitmap_count_one(bitmap, nbits); + } +} + void bitmap_set(unsigned long *map, long i, long len); void bitmap_set_atomic(unsigned long *map, long i, long len); void bitmap_clear(unsigned long *map, long start, long nr); @@ -237,4 +249,9 @@ static inline unsigned long *bitmap_zero_extend(unsigned long *old, return new; } +void bitmap_to_le(unsigned long *dst, const unsigned long *src, + long nbits); +void bitmap_from_le(unsigned long *dst, const unsigned long *src, + long nbits); + #endif /* BITMAP_H */ |