include/linux/cmpxchg-emu.h

   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 */