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38 #include <libcfs/libcfs.h>
39 #include <libcfs/user-bitops.h>
41 #define OFF_BY_START(start) ((start)/BITS_PER_LONG)
43 unsigned long find_next_bit(unsigned long *addr,
44 unsigned long size, unsigned long offset)
46 unsigned long *word, *last;
47 unsigned long first_bit, bit, base;
49 word = addr + OFF_BY_START(offset);
50 last = addr + OFF_BY_START(size-1);
51 first_bit = offset % BITS_PER_LONG;
52 base = offset - first_bit;
57 int tmp = (*word++) & (~0UL << first_bit);
59 if (bit < BITS_PER_LONG)
62 base += BITS_PER_LONG;
64 while (word <= last) {
66 bit = __cfs_ffs(*word);
70 base += BITS_PER_LONG;
77 unsigned long find_next_zero_bit(unsigned long *addr,
78 unsigned long size, unsigned long offset)
80 unsigned long *word, *last;
81 unsigned long first_bit, bit, base;
83 word = addr + OFF_BY_START(offset);
84 last = addr + OFF_BY_START(size-1);
85 first_bit = offset % BITS_PER_LONG;
86 base = offset - first_bit;
91 int tmp = (*word++) & (~0UL << first_bit);
93 if (bit < BITS_PER_LONG)
96 base += BITS_PER_LONG;
98 while (word <= last) {
100 bit = __cfs_ffz(*word);
104 base += BITS_PER_LONG;