1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _TOOLS_LINUX_ASM_GENERIC_BITOPS_FIND_H_
 3#define _TOOLS_LINUX_ASM_GENERIC_BITOPS_FIND_H_
 4
 5#ifndef find_next_bit
 6/**
 7 * find_next_bit - find the next set bit in a memory region
 8 * @addr: The address to base the search on
 9 * @offset: The bitnumber to start searching at
10 * @size: The bitmap size in bits
11 *
12 * Returns the bit number for the next set bit
13 * If no bits are set, returns @size.
14 */
15extern unsigned long find_next_bit(const unsigned long *addr, unsigned long
16		size, unsigned long offset);
17#endif
18
19#ifndef find_next_and_bit
20/**
21 * find_next_and_bit - find the next set bit in both memory regions
22 * @addr1: The first address to base the search on
23 * @addr2: The second address to base the search on
24 * @offset: The bitnumber to start searching at
25 * @size: The bitmap size in bits
26 *
27 * Returns the bit number for the next set bit
28 * If no bits are set, returns @size.
29 */
30extern unsigned long find_next_and_bit(const unsigned long *addr1,
31		const unsigned long *addr2, unsigned long size,
32		unsigned long offset);
33#endif
34
35#ifndef find_next_zero_bit
36
37/**
38 * find_next_zero_bit - find the next cleared bit in a memory region
39 * @addr: The address to base the search on
40 * @offset: The bitnumber to start searching at
41 * @size: The bitmap size in bits
42 *
43 * Returns the bit number of the next zero bit
44 * If no bits are zero, returns @size.
45 */
46unsigned long find_next_zero_bit(const unsigned long *addr, unsigned long size,
47				 unsigned long offset);
48#endif
49
50#ifndef find_first_bit
51
52/**
53 * find_first_bit - find the first set bit in a memory region
54 * @addr: The address to start the search at
55 * @size: The maximum number of bits to search
56 *
57 * Returns the bit number of the first set bit.
58 * If no bits are set, returns @size.
59 */
60extern unsigned long find_first_bit(const unsigned long *addr,
61				    unsigned long size);
62
63#endif /* find_first_bit */
64
65#ifndef find_first_zero_bit
66
67/**
68 * find_first_zero_bit - find the first cleared bit in a memory region
69 * @addr: The address to start the search at
70 * @size: The maximum number of bits to search
71 *
72 * Returns the bit number of the first cleared bit.
73 * If no bits are zero, returns @size.
74 */
75unsigned long find_first_zero_bit(const unsigned long *addr, unsigned long size);
76#endif
77
78#endif /*_TOOLS_LINUX_ASM_GENERIC_BITOPS_FIND_H_ */