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1#ifndef _ASM_GENERIC_BITOPS_FIND_H_
2#define _ASM_GENERIC_BITOPS_FIND_H_
3
4/**
5 * find_next_bit - find the next set bit in a memory region
6 * @addr: The address to base the search on
7 * @offset: The bitnumber to start searching at
8 * @size: The bitmap size in bits
9 */
10extern unsigned long find_next_bit(const unsigned long *addr, unsigned long
11 size, unsigned long offset);
12
13/**
14 * find_next_zero_bit - find the next cleared bit in a memory region
15 * @addr: The address to base the search on
16 * @offset: The bitnumber to start searching at
17 * @size: The bitmap size in bits
18 */
19extern unsigned long find_next_zero_bit(const unsigned long *addr, unsigned
20 long size, unsigned long offset);
21
22#ifdef CONFIG_GENERIC_FIND_FIRST_BIT
23
24/**
25 * find_first_bit - find the first set bit in a memory region
26 * @addr: The address to start the search at
27 * @size: The maximum size to search
28 *
29 * Returns the bit number of the first set bit.
30 */
31extern unsigned long find_first_bit(const unsigned long *addr,
32 unsigned long size);
33
34/**
35 * find_first_zero_bit - find the first cleared bit in a memory region
36 * @addr: The address to start the search at
37 * @size: The maximum size to search
38 *
39 * Returns the bit number of the first cleared bit.
40 */
41extern unsigned long find_first_zero_bit(const unsigned long *addr,
42 unsigned long size);
43#else /* CONFIG_GENERIC_FIND_FIRST_BIT */
44
45#define find_first_bit(addr, size) find_next_bit((addr), (size), 0)
46#define find_first_zero_bit(addr, size) find_next_zero_bit((addr), (size), 0)
47
48#endif /* CONFIG_GENERIC_FIND_FIRST_BIT */
49
50#endif /*_ASM_GENERIC_BITOPS_FIND_H_ */