| 45,6 → 45,7 |
|---|
| * bitmap_set(dst, pos, nbits) Set specified bit area |
| * bitmap_clear(dst, pos, nbits) Clear specified bit area |
| * bitmap_find_next_zero_area(buf, len, pos, n, mask) Find bit free area |
| * bitmap_find_next_zero_area_off(buf, len, pos, n, mask) as above |
| * bitmap_shift_right(dst, src, n, nbits) *dst = *src >> n |
| * bitmap_shift_left(dst, src, n, nbits) *dst = *src << n |
| * bitmap_remap(dst, src, old, new, nbits) *dst = map(old, new)(src) |
| 60,6 → 61,7 |
|---|
| * bitmap_find_free_region(bitmap, bits, order) Find and allocate bit region |
| * bitmap_release_region(bitmap, pos, order) Free specified bit region |
| * bitmap_allocate_region(bitmap, pos, order) Allocate specified bit region |
| * bitmap_print_to_pagebuf(list, buf, mask, nbits) Print bitmap src as list/hex |
| */ |
| |
| /* |
| 114,12 → 116,37 |
|---|
| |
| extern void bitmap_set(unsigned long *map, unsigned int start, int len); |
| extern void bitmap_clear(unsigned long *map, unsigned int start, int len); |
| extern unsigned long bitmap_find_next_zero_area(unsigned long *map, |
| |
| extern unsigned long bitmap_find_next_zero_area_off(unsigned long *map, |
| unsigned long size, |
| unsigned long start, |
| unsigned int nr, |
| unsigned long align_mask); |
| unsigned long align_mask, |
| unsigned long align_offset); |
| |
| /** |
| * bitmap_find_next_zero_area - find a contiguous aligned zero area |
| * @map: The address to base the search on |
| * @size: The bitmap size in bits |
| * @start: The bitnumber to start searching at |
| * @nr: The number of zeroed bits we're looking for |
| * @align_mask: Alignment mask for zero area |
| * |
| * The @align_mask should be one less than a power of 2; the effect is that |
| * the bit offset of all zero areas this function finds is multiples of that |
| * power of 2. A @align_mask of 0 means no alignment is required. |
| */ |
| static inline unsigned long |
| bitmap_find_next_zero_area(unsigned long *map, |
| unsigned long size, |
| unsigned long start, |
| unsigned int nr, |
| unsigned long align_mask) |
| { |
| return bitmap_find_next_zero_area_off(map, size, start, nr, |
| align_mask, 0); |
| } |
| |
| extern int bitmap_scnprintf(char *buf, unsigned int len, |
| const unsigned long *src, int nbits); |
| extern int __bitmap_parse(const char *buf, unsigned int buflen, int is_user, |
| 145,6 → 172,8 |
|---|
| extern int bitmap_allocate_region(unsigned long *bitmap, unsigned int pos, int order); |
| extern void bitmap_copy_le(void *dst, const unsigned long *src, int nbits); |
| extern int bitmap_ord_to_pos(const unsigned long *bitmap, int n, int bits); |
| extern int bitmap_print_to_pagebuf(bool list, char *buf, |
| const unsigned long *maskp, int nmaskbits); |
| |
| #define BITMAP_FIRST_WORD_MASK(start) (~0UL << ((start) % BITS_PER_LONG)) |
| #define BITMAP_LAST_WORD_MASK(nbits) \ |