1#ifndef _ASM_GENERIC_BITOPS_FIND_H_ 2#define _ASM_GENERIC_BITOPS_FIND_H_ 3 4#ifndef find_next_bit 5/** 6 * find_next_bit - find the next set bit in a memory region 7 * @addr: The address to base the search on 8 * @offset: The bitnumber to start searching at 9 * @size: The bitmap size in bits 10 */ 11extern unsigned long find_next_bit(const unsigned long *addr, unsigned long 12 size, unsigned long offset); 13#endif 14 15#ifndef find_next_zero_bit 16/** 17 * find_next_zero_bit - find the next cleared bit in a memory region 18 * @addr: The address to base the search on 19 * @offset: The bitnumber to start searching at 20 * @size: The bitmap size in bits 21 */ 22extern unsigned long find_next_zero_bit(const unsigned long *addr, unsigned 23 long size, unsigned long offset); 24#endif 25 26#ifdef CONFIG_GENERIC_FIND_FIRST_BIT 27 28/** 29 * find_first_bit - find the first set bit in a memory region 30 * @addr: The address to start the search at 31 * @size: The maximum size to search 32 * 33 * Returns the bit number of the first set bit. 34 */ 35extern unsigned long find_first_bit(const unsigned long *addr, 36 unsigned long size); 37 38/** 39 * find_first_zero_bit - find the first cleared bit in a memory region 40 * @addr: The address to start the search at 41 * @size: The maximum size to search 42 * 43 * Returns the bit number of the first cleared bit. 44 */ 45extern unsigned long find_first_zero_bit(const unsigned long *addr, 46 unsigned long size); 47#else /* CONFIG_GENERIC_FIND_FIRST_BIT */ 48 49#define find_first_bit(addr, size) find_next_bit((addr), (size), 0) 50#define find_first_zero_bit(addr, size) find_next_zero_bit((addr), (size), 0) 51 52#endif /* CONFIG_GENERIC_FIND_FIRST_BIT */ 53 54#endif /*_ASM_GENERIC_BITOPS_FIND_H_ */ 55