1 files changed, 60 insertions, 0 deletions
diff --git a/arch/arc/include/asm/atomic.h b/arch/arc/include/asm/atomic.h
new file mode 100644
index 000000000..52ee51e1f
--- /dev/null
+++ b/arch/arc/include/asm/atomic.h
@@ -0,0 +1,60 @@
+/* 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
+
+#define arch_atomic_cmpxchg(v, o, n)					\
+({									\
+	arch_cmpxchg(&((v)->counter), (o), (n));			\
+})
+
+#ifdef arch_cmpxchg_relaxed
+#define arch_atomic_cmpxchg_relaxed(v, o, n)				\
+({									\
+	arch_cmpxchg_relaxed(&((v)->counter), (o), (n));		\
+})
+#endif
+
+#define arch_atomic_xchg(v, n)						\
+({									\
+	arch_xchg(&((v)->counter), (n));				\
+})
+
+#ifdef arch_xchg_relaxed
+#define arch_atomic_xchg_relaxed(v, n)					\
+({									\
+	arch_xchg_relaxed(&((v)->counter), (n));			\
+})
+#endif
+
+/*
+ * 64-bit atomics
+ */
+#ifdef CONFIG_GENERIC_ATOMIC64
+#include <asm-generic/atomic64.h>
+#else
+#include <asm/atomic64-arcv2.h>
+#endif
+
+#endif	/* !__ASSEMBLY__ */
+
+#endif