/* SPDX-License-Identifier: GPL-2.0 */#ifndef _ASM_GENERIC_BITOPS_FIND_H_#define _ASM_GENERIC_BITOPS_FIND_H_ #ifndef find_next_bit/** * find_next_bit - find the next set bit in a memory region * @addr: The address to base the search on * @offset: The bitnumber to start searching at * @size: The bitmap size in bits * * Returns the bit number for the next set bit * If no bits are set, returns @size. */extern unsigned long find_next_bit(const unsigned long *addr, unsigned long		size, unsigned long offset);#endif #ifndef find_next_and_bit/** * find_next_and_bit - find the next set bit in both memory regions * @addr1: The first address to base the search on * @addr2: The second address to base the search on * @offset: The bitnumber to start searching at * @size: The bitmap size in bits * * Returns the bit number for the next set bit * If no bits are set, returns @size. */extern unsigned long find_next_and_bit(const unsigned long *addr1,		const unsigned long *addr2, unsigned long size,		unsigned long offset);#endif #ifndef find_next_zero_bit/** * find_next_zero_bit - find the next cleared bit in a memory region * @addr: The address to base the search on * @offset: The bitnumber to start searching at * @size: The bitmap size in bits * * Returns the bit number of the next zero bit * If no bits are zero, returns @size. */extern unsigned long find_next_zero_bit(const unsigned long *addr, unsigned		long size, unsigned long offset);#endif #ifdef CONFIG_GENERIC_FIND_FIRST_BIT /** * find_first_bit - find the first set bit in a memory region * @addr: The address to start the search at * @size: The maximum number of bits to search * * Returns the bit number of the first set bit. * If no bits are set, returns @size. */extern unsigned long find_first_bit(const unsigned long *addr,				    unsigned long size); /** * find_first_zero_bit - find the first cleared bit in a memory region * @addr: The address to start the search at * @size: The maximum number of bits to search * * Returns the bit number of the first cleared bit. * If no bits are zero, returns @size. */extern unsigned long find_first_zero_bit(const unsigned long *addr,					 unsigned long size);#else /* CONFIG_GENERIC_FIND_FIRST_BIT */ #ifndef find_first_bit#define find_first_bit(addr, size) find_next_bit((addr), (size), 0)#endif#ifndef find_first_zero_bit#define find_first_zero_bit(addr, size) find_next_zero_bit((addr), (size), 0)#endif #endif /* CONFIG_GENERIC_FIND_FIRST_BIT */ /** * find_next_clump8 - find next 8-bit clump with set bits in a memory region * @clump: location to store copy of found clump * @addr: address to base the search on * @size: bitmap size in number of bits * @offset: bit offset at which to start searching * * Returns the bit offset for the next set clump; the found clump value is * copied to the location pointed by @clump. If no bits are set, returns @size. */extern unsigned long find_next_clump8(unsigned long *clump,				      const unsigned long *addr,				      unsigned long size, unsigned long offset); #define find_first_clump8(clump, bits, size) \	find_next_clump8((clump), (bits), (size), 0) #endif /*_ASM_GENERIC_BITOPS_FIND_H_ */