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