[linux-block.git] / include / linux / cmpxchg-emu.h

/* SPDX-License-Identifier: GPL-2.0+ */
/*
 * Emulated 1-byte and 2-byte cmpxchg operations for architectures
 * lacking direct support for these sizes.  These are implemented in terms
 * of 4-byte cmpxchg operations.
 *
 * Copyright (C) 2024 Paul E. McKenney.
 */

#ifndef __LINUX_CMPXCHG_EMU_H
#define __LINUX_CMPXCHG_EMU_H

uintptr_t cmpxchg_emu_u8(volatile u8 *p, uintptr_t old, uintptr_t new);

#endif /* __LINUX_CMPXCHG_EMU_H */
Commit	Line	Data
a88d970c PM	1	/* SPDX-License-Identifier: GPL-2.0+ */
	2	/*
	3	* Emulated 1-byte and 2-byte cmpxchg operations for architectures
	4	* lacking direct support for these sizes. These are implemented in terms
	5	* of 4-byte cmpxchg operations.
	6	*
	7	* Copyright (C) 2024 Paul E. McKenney.
	8	*/
	9
	10	#ifndef __LINUX_CMPXCHG_EMU_H
	11	#define __LINUX_CMPXCHG_EMU_H
	12
	13	uintptr_t cmpxchg_emu_u8(volatile u8 *p, uintptr_t old, uintptr_t new);
	14
	15	#endif /* __LINUX_CMPXCHG_EMU_H */