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-rw-r--r--arch/arc/include/asm/atomic.h36
1 files changed, 36 insertions, 0 deletions
diff --git a/arch/arc/include/asm/atomic.h b/arch/arc/include/asm/atomic.h
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+++ b/arch/arc/include/asm/atomic.h
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+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
+ */
+
+#ifndef _ASM_ARC_ATOMIC_H
+#define _ASM_ARC_ATOMIC_H
+
+#ifndef __ASSEMBLY__
+
+#include <linux/types.h>
+#include <linux/compiler.h>
+#include <asm/cmpxchg.h>
+#include <asm/barrier.h>
+#include <asm/smp.h>
+
+#define arch_atomic_read(v) READ_ONCE((v)->counter)
+
+#ifdef CONFIG_ARC_HAS_LLSC
+#include <asm/atomic-llsc.h>
+#else
+#include <asm/atomic-spinlock.h>
+#endif
+
+/*
+ * 64-bit atomics
+ */
+#ifdef CONFIG_GENERIC_ATOMIC64
+#include <asm-generic/atomic64.h>
+#else
+#include <asm/atomic64-arcv2.h>
+#endif
+
+#endif /* !__ASSEMBLY__ */
+
+#endif