arch/arc/include/asm/atomic.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
   4  */
   5
   6 #ifndef _ASM_ARC_ATOMIC_H
   7 #define _ASM_ARC_ATOMIC_H
   8
   9 #ifndef __ASSEMBLY__
  10
  11 #include <linux/types.h>
  12 #include <linux/compiler.h>
  13 #include <asm/cmpxchg.h>
  14 #include <asm/barrier.h>
  15 #include <asm/smp.h>
  16
  17 #define arch_atomic_read(v)  READ_ONCE((v)->counter)
  18
  19 #ifdef CONFIG_ARC_HAS_LLSC
  20 #include <asm/atomic-llsc.h>
  21 #else
  22 #include <asm/atomic-spinlock.h>
  23 #endif
  24
  25 /*
  26  * 64-bit atomics
  27  */
  28 #ifdef CONFIG_GENERIC_ATOMIC64
  29 #include <asm-generic/atomic64.h>
  30 #else
  31 #include <asm/atomic64-arcv2.h>
  32 #endif
  33
  34 #endif  /* !__ASSEMBLY__ */
  35
  36 #endif