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_
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
12 * Returns the bit number for the next set bit
13 * If no bits are set, returns @size.
15 extern unsigned long find_next_bit(const unsigned long *addr, unsigned long
16 size, unsigned long offset);
19 #ifndef find_next_zero_bit
22 * find_next_zero_bit - find the next cleared bit in a memory region
23 * @addr: The address to base the search on
24 * @offset: The bitnumber to start searching at
25 * @size: The bitmap size in bits
27 * Returns the bit number of the next zero bit
28 * If no bits are zero, returns @size.
30 unsigned long find_next_zero_bit(const unsigned long *addr, unsigned long size,
31 unsigned long offset);
34 #ifndef find_first_bit
37 * find_first_bit - find the first set bit in a memory region
38 * @addr: The address to start the search at
39 * @size: The maximum number of bits to search
41 * Returns the bit number of the first set bit.
42 * If no bits are set, returns @size.
44 extern unsigned long find_first_bit(const unsigned long *addr,
47 #endif /* find_first_bit */
49 #ifndef find_first_zero_bit
52 * find_first_zero_bit - find the first cleared bit in a memory region
53 * @addr: The address to start the search at
54 * @size: The maximum number of bits to search
56 * Returns the bit number of the first cleared bit.
57 * If no bits are zero, returns @size.
59 unsigned long find_first_zero_bit(const unsigned long *addr, unsigned long size);
62 #endif /*_TOOLS_LINUX_ASM_GENERIC_BITOPS_FIND_H_ */