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Tip revision: c0bc126f97fb929b3ae02c1c62322645d70eb408 authored by Linus Torvalds on 26 June 2017, 01:30:05 UTC
Linux 4.12-rc7
Tip revision: c0bc126
atomic.h
#ifndef _TOOLS_LINUX_ASM_GENERIC_BITOPS_ATOMIC_H_
#define _TOOLS_LINUX_ASM_GENERIC_BITOPS_ATOMIC_H_

#include <asm/types.h>
#include <asm/bitsperlong.h>

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;
}

#define __set_bit(nr, addr)	set_bit(nr, addr)
#define __clear_bit(nr, addr)	clear_bit(nr, addr)

#endif /* _TOOLS_LINUX_ASM_GENERIC_BITOPS_ATOMIC_H_ */
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