#ifndef _PERF_BITOPS_H#define _PERF_BITOPS_H #include <string.h>#include <linux/bitops.h> #define DECLARE_BITMAP(name,bits) \	unsigned long name[BITS_TO_LONGS(bits)] 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); #define BITMAP_FIRST_WORD_MASK(start) (~0UL << ((start) & (BITS_PER_LONG - 1))) #define BITMAP_LAST_WORD_MASK(nbits)					\(									\	((nbits) % BITS_PER_LONG) ?					\		(1UL<<((nbits) % BITS_PER_LONG))-1 : ~0UL		\) #define small_const_nbits(nbits) \	(__builtin_constant_p(nbits) && (nbits) <= BITS_PER_LONG) static inline void bitmap_zero(unsigned long *dst, 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 int bitmap_weight(const unsigned long *src, 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, int nbits){	if (small_const_nbits(nbits))		*dst = *src1 | *src2;	else		__bitmap_or(dst, src1, src2, nbits);} /** * test_and_set_bit - Set a bit and return its old value * @nr: Bit to set * @addr: Address to count from */static inline int test_and_set_bit(int nr, unsigned long *addr){	unsigned long mask = BIT_MASK(nr);	unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);	unsigned long old; 	old = *p;	*p = old | mask; 	return (old & mask) != 0;} #endif /* _PERF_BITOPS_H */