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Merge branch 'for-2.6.38' of git://linux-nfs.org/~bfields/linux
[mv-sheeva.git] / tools / perf / util / include / linux / bitops.h
1 #ifndef _PERF_LINUX_BITOPS_H_
2 #define _PERF_LINUX_BITOPS_H_
3
4 #include <linux/kernel.h>
5 #include <linux/compiler.h>
6 #include <asm/hweight.h>
7
8 #define BITS_PER_LONG __WORDSIZE
9 #define BITS_PER_BYTE           8
10 #define BITS_TO_LONGS(nr)       DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(long))
11
12 static inline void set_bit(int nr, unsigned long *addr)
13 {
14         addr[nr / BITS_PER_LONG] |= 1UL << (nr % BITS_PER_LONG);
15 }
16
17 static inline void clear_bit(int nr, unsigned long *addr)
18 {
19         addr[nr / BITS_PER_LONG] &= ~(1UL << (nr % BITS_PER_LONG));
20 }
21
22 static __always_inline int test_bit(unsigned int nr, const unsigned long *addr)
23 {
24         return ((1UL << (nr % BITS_PER_LONG)) &
25                 (((unsigned long *)addr)[nr / BITS_PER_LONG])) != 0;
26 }
27
28 static inline unsigned long hweight_long(unsigned long w)
29 {
30         return sizeof(w) == 4 ? hweight32(w) : hweight64(w);
31 }
32
33 #endif