Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / blackfin / include / asm / atomic.h

diff --git a/kernel/arch/blackfin/include/asm/atomic.h b/kernel/arch/blackfin/include/asm/atomic.h
new file mode 100644 (file)
index 0000000..a107a98
--- /dev/null
+++ b/kernel/arch/blackfin/include/asm/atomic.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2004-2011 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef __ARCH_BLACKFIN_ATOMIC__
+#define __ARCH_BLACKFIN_ATOMIC__
+
+#include <asm/cmpxchg.h>
+
+#ifdef CONFIG_SMP
+
+#include <asm/barrier.h>
+#include <linux/linkage.h>
+#include <linux/types.h>
+
+asmlinkage int __raw_uncached_fetch_asm(const volatile int *ptr);
+asmlinkage int __raw_atomic_update_asm(volatile int *ptr, int value);
+asmlinkage int __raw_atomic_clear_asm(volatile int *ptr, int value);
+asmlinkage int __raw_atomic_set_asm(volatile int *ptr, int value);
+asmlinkage int __raw_atomic_xor_asm(volatile int *ptr, int value);
+asmlinkage int __raw_atomic_test_asm(const volatile int *ptr, int value);
+
+#define atomic_read(v) __raw_uncached_fetch_asm(&(v)->counter)
+
+#define atomic_add_return(i, v) __raw_atomic_update_asm(&(v)->counter, i)
+#define atomic_sub_return(i, v) __raw_atomic_update_asm(&(v)->counter, -(i))
+
+#define atomic_clear_mask(m, v) __raw_atomic_clear_asm(&(v)->counter, m)
+#define atomic_set_mask(m, v)   __raw_atomic_set_asm(&(v)->counter, m)
+
+#endif
+
+#include <asm-generic/atomic.h>
+
+#endif