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 */ 15 extern 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 */ 30 extern 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 */ 46 unsigned 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 */ 60 extern 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 */ 75 unsigned long find_first_zero_bit(const unsigned long *addr, unsigned long size); 76 #endif 77 78 #endif /*_TOOLS_LINUX_ASM_GENERIC_BITOPS_FIND_H_ */ 79