[linux-2.6-block.git] / tools / include / asm-generic / bitops / atomic.h

/* SPDX-License-Identifier: GPL-2.0 */
#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_ */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
cae68d4f ACM	2	#ifndef _TOOLS_LINUX_ASM_GENERIC_BITOPS_ATOMIC_H_
	3	#define _TOOLS_LINUX_ASM_GENERIC_BITOPS_ATOMIC_H_
	4
	5	#include <asm/types.h>
bb970707	6	#include <asm/bitsperlong.h>
cae68d4f ACM	7
	8	static inline void set_bit(int nr, unsigned long *addr)
	9	{
	10	addr[nr / __BITS_PER_LONG] \|= 1UL << (nr % __BITS_PER_LONG);
	11	}
	12
	13	static inline void clear_bit(int nr, unsigned long *addr)
	14	{
	15	addr[nr / __BITS_PER_LONG] &= ~(1UL << (nr % __BITS_PER_LONG));
	16	}
	17
	18	static __always_inline int test_bit(unsigned int nr, const unsigned long *addr)
	19	{
	20	return ((1UL << (nr % __BITS_PER_LONG)) &
	21	(((unsigned long *)addr)[nr / __BITS_PER_LONG])) != 0;
	22	}
	23
c68a2aab MW	24	#define __set_bit(nr, addr) set_bit(nr, addr)
	25	#define __clear_bit(nr, addr) clear_bit(nr, addr)
	26
cae68d4f	27	#endif /* _TOOLS_LINUX_ASM_GENERIC_BITOPS_ATOMIC_H_ */