projects / thirdparty / kernel / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 23e1a358 ACM |
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 | */ | |
| 15 | extern unsigned long find_next_bit(const unsigned long *addr, unsigned long | |
| 16 | size, unsigned long offset); | |
| 17 | #endif | |
| 18 | ||
| 02bc11de JO |
19 | #ifndef find_next_zero_bit |
| 20 | ||
| 21 | /** | |
| 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 | |
| 26 | * | |
| 27 | * Returns the bit number of the next zero bit | |
| 28 | * If no bits are zero, returns @size. | |
| 29 | */ | |
| 30 | unsigned long find_next_zero_bit(const unsigned long *addr, unsigned long size, | |
| 31 | unsigned long offset); | |
| 32 | #endif | |
| 33 | ||
| 23e1a358 ACM |
34 | #ifndef find_first_bit |
| 35 | ||
| 36 | /** | |
| 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 | |
| 40 | * | |
| 41 | * Returns the bit number of the first set bit. | |
| 42 | * If no bits are set, returns @size. | |
| 43 | */ | |
| 44 | extern unsigned long find_first_bit(const unsigned long *addr, | |
| 45 | unsigned long size); | |
| 46 | ||
| 47 | #endif /* find_first_bit */ | |
| 48 | ||
| 02bc11de JO |
49 | #ifndef find_first_zero_bit |
| 50 | ||
| 51 | /** | |
| 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 | |
| 55 | * | |
| 56 | * Returns the bit number of the first cleared bit. | |
| 57 | * If no bits are zero, returns @size. | |
| 58 | */ | |
| 59 | unsigned long find_first_zero_bit(const unsigned long *addr, unsigned long size); | |
| 60 | #endif | |
| 61 | ||
| 23e1a358 | 62 | #endif /*_TOOLS_LINUX_ASM_GENERIC_BITOPS_FIND_H_ */ |