/* SPDX-License-Identifier: GPL-2.0 */#ifndef _TOOLS_LINUX_BITMAP_H#define _TOOLS_LINUX_BITMAP_H #include <string.h>#include <linux/bitops.h>#include <linux/find.h>#include <stdlib.h>#include <linux/kernel.h> #define DECLARE_BITMAP(name,bits) \	unsigned long name[BITS_TO_LONGS(bits)] unsigned int __bitmap_weight(const unsigned long *bitmap, int bits);void __bitmap_or(unsigned long *dst, const unsigned long *bitmap1,		 const unsigned long *bitmap2, int bits);bool __bitmap_and(unsigned long *dst, const unsigned long *bitmap1,		 const unsigned long *bitmap2, unsigned int bits);bool __bitmap_equal(const unsigned long *bitmap1,		    const unsigned long *bitmap2, unsigned int bits);void bitmap_clear(unsigned long *map, unsigned int start, int len);bool __bitmap_intersects(const unsigned long *bitmap1,			 const unsigned long *bitmap2, unsigned int bits); #define BITMAP_FIRST_WORD_MASK(start) (~0UL << ((start) & (BITS_PER_LONG - 1)))#define BITMAP_LAST_WORD_MASK(nbits) (~0UL >> (-(nbits) & (BITS_PER_LONG - 1))) static inline void bitmap_zero(unsigned long *dst, unsigned int nbits){	if (small_const_nbits(nbits))		*dst = 0UL;	else {		int len = BITS_TO_LONGS(nbits) * sizeof(unsigned long);		memset(dst, 0, len);	}} static inline void bitmap_fill(unsigned long *dst, unsigned int nbits){	unsigned int nlongs = BITS_TO_LONGS(nbits);	if (!small_const_nbits(nbits)) {		unsigned int len = (nlongs - 1) * sizeof(unsigned long);		memset(dst, 0xff,  len);	}	dst[nlongs - 1] = BITMAP_LAST_WORD_MASK(nbits);} static inline bool bitmap_empty(const unsigned long *src, unsigned int nbits){	if (small_const_nbits(nbits))		return ! (*src & BITMAP_LAST_WORD_MASK(nbits)); 	return find_first_bit(src, nbits) == nbits;} static inline bool bitmap_full(const unsigned long *src, unsigned int nbits){	if (small_const_nbits(nbits))		return ! (~(*src) & BITMAP_LAST_WORD_MASK(nbits)); 	return find_first_zero_bit(src, nbits) == nbits;} static inline unsigned int bitmap_weight(const unsigned long *src, unsigned int nbits){	if (small_const_nbits(nbits))		return hweight_long(*src & BITMAP_LAST_WORD_MASK(nbits));	return __bitmap_weight(src, nbits);} static inline void bitmap_or(unsigned long *dst, const unsigned long *src1,			     const unsigned long *src2, unsigned int nbits){	if (small_const_nbits(nbits))		*dst = *src1 | *src2;	else		__bitmap_or(dst, src1, src2, nbits);} /** * bitmap_zalloc - Allocate bitmap * @nbits: Number of bits */static inline unsigned long *bitmap_zalloc(int nbits){	return calloc(1, BITS_TO_LONGS(nbits) * sizeof(unsigned long));} /* * bitmap_free - Free bitmap * @bitmap: pointer to bitmap */static inline void bitmap_free(unsigned long *bitmap){	free(bitmap);} /* * bitmap_scnprintf - print bitmap list into buffer * @bitmap: bitmap * @nbits: size of bitmap * @buf: buffer to store output * @size: size of @buf */size_t bitmap_scnprintf(unsigned long *bitmap, unsigned int nbits,			char *buf, size_t size); /** * bitmap_and - Do logical and on bitmaps * @dst: resulting bitmap * @src1: operand 1 * @src2: operand 2 * @nbits: size of bitmap */static inline bool bitmap_and(unsigned long *dst, const unsigned long *src1,			     const unsigned long *src2, unsigned int nbits){	if (small_const_nbits(nbits))		return (*dst = *src1 & *src2 & BITMAP_LAST_WORD_MASK(nbits)) != 0;	return __bitmap_and(dst, src1, src2, nbits);} #ifdef __LITTLE_ENDIAN#define BITMAP_MEM_ALIGNMENT 8#else#define BITMAP_MEM_ALIGNMENT (8 * sizeof(unsigned long))#endif#define BITMAP_MEM_MASK (BITMAP_MEM_ALIGNMENT - 1)#define IS_ALIGNED(x, a) (((x) & ((typeof(x))(a) - 1)) == 0) static inline bool bitmap_equal(const unsigned long *src1,				const unsigned long *src2, unsigned int nbits){	if (small_const_nbits(nbits))		return !((*src1 ^ *src2) & BITMAP_LAST_WORD_MASK(nbits));	if (__builtin_constant_p(nbits & BITMAP_MEM_MASK) &&	    IS_ALIGNED(nbits, BITMAP_MEM_ALIGNMENT))		return !memcmp(src1, src2, nbits / 8);	return __bitmap_equal(src1, src2, nbits);} static inline bool bitmap_intersects(const unsigned long *src1,				     const unsigned long *src2,				     unsigned int nbits){	if (small_const_nbits(nbits))		return ((*src1 & *src2) & BITMAP_LAST_WORD_MASK(nbits)) != 0;	else		return __bitmap_intersects(src1, src2, nbits);} #endif /* _TOOLS_LINUX_BITMAP_H */