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      1 #ifndef _PERF_LINUX_BITOPS_H_
      2 #define _PERF_LINUX_BITOPS_H_
      3 
      4 /* ANDROID_CHANGE_BEGIN */
      5 #if 0
      6 #include <linux/kernel.h>
      7 #include <linux/compiler.h>
      8 #include <asm/hweight.h>
      9 #else
     10 #include "kernel.h"
     11 #include "compiler.h"
     12 #include "../asm/hweight.h"
     13 #if defined(__BIONIC__) || defined(__APPLE__)
     14 #define __WORDSIZE 32
     15 #endif
     16 #endif
     17 /* ANDROID_CHANGE_END */
     18 
     19 #define BITS_PER_LONG __WORDSIZE
     20 #define BITS_PER_BYTE           8
     21 #define BITS_TO_LONGS(nr)       DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(long))
     22 
     23 static inline void set_bit(int nr, unsigned long *addr)
     24 {
     25 	addr[nr / BITS_PER_LONG] |= 1UL << (nr % BITS_PER_LONG);
     26 }
     27 
     28 static inline void clear_bit(int nr, unsigned long *addr)
     29 {
     30 	addr[nr / BITS_PER_LONG] &= ~(1UL << (nr % BITS_PER_LONG));
     31 }
     32 
     33 static __always_inline int test_bit(unsigned int nr, const unsigned long *addr)
     34 {
     35 	return ((1UL << (nr % BITS_PER_LONG)) &
     36 		(((unsigned long *)addr)[nr / BITS_PER_LONG])) != 0;
     37 }
     38 
     39 static inline unsigned long hweight_long(unsigned long w)
     40 {
     41 	return sizeof(w) == 4 ? hweight32(w) : hweight64(w);
     42 }
     43 
     44 #endif
     45