| #ifndef _PERF_LINUX_BITOPS_H_ |
| #define _PERF_LINUX_BITOPS_H_ |
| |
| #include <linux/kernel.h> |
| #include <linux/compiler.h> |
| #include <asm/hweight.h> |
| |
| #define BITS_PER_LONG __WORDSIZE |
| #define BITS_PER_BYTE 8 |
| #define BITS_TO_LONGS(nr) DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(long)) |
| |
| static inline void set_bit(int nr, unsigned long *addr) |
| { |
| addr[nr / BITS_PER_LONG] |= 1UL << (nr % BITS_PER_LONG); |
| } |
| |
| static inline void clear_bit(int nr, unsigned long *addr) |
| { |
| addr[nr / BITS_PER_LONG] &= ~(1UL << (nr % BITS_PER_LONG)); |
| } |
| |
| static __always_inline int test_bit(unsigned int nr, const unsigned long *addr) |
| { |
| return ((1UL << (nr % BITS_PER_LONG)) & |
| (((unsigned long *)addr)[nr / BITS_PER_LONG])) != 0; |
| } |
| |
| static inline unsigned long hweight_long(unsigned long w) |
| { |
| return sizeof(w) == 4 ? hweight32(w) : hweight64(w); |
| } |
| |
| #endif |
