projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 5a116dd2 FW |
1 | #ifndef _PERF_LINUX_BITOPS_H_ |
| 2 | #define _PERF_LINUX_BITOPS_H_ | |
| 3 | ||
| fb72014d ACM |
4 | #include <linux/kernel.h> |
| 5 | #include <asm/hweight.h> | |
| 5a116dd2 | 6 | |
| fb72014d ACM |
7 | #define BITS_PER_LONG __WORDSIZE |
| 8 | #define BITS_PER_BYTE 8 | |
| 9 | #define BITS_TO_LONGS(nr) DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(long)) | |
| ee3d2504 | 10 | |
| 5a116dd2 FW |
11 | static inline void set_bit(int nr, unsigned long *addr) |
| 12 | { | |
| 13 | addr[nr / BITS_PER_LONG] |= 1UL << (nr % BITS_PER_LONG); | |
| 14 | } | |
| 15 | ||
| 16 | static __always_inline int test_bit(unsigned int nr, const unsigned long *addr) | |
| 17 | { | |
| 18 | return ((1UL << (nr % BITS_PER_LONG)) & | |
| 19 | (((unsigned long *)addr)[nr / BITS_PER_LONG])) != 0; | |
| 20 | } | |
| 21 | ||
| fb72014d ACM |
22 | static inline unsigned long hweight_long(unsigned long w) |
| 23 | { | |
| 24 | return sizeof(w) == 4 ? hweight32(w) : hweight64(w); | |
| 25 | } | |
| 5a116dd2 FW |
26 | |
| 27 | #endif |