建立工程，成功创建两个虚拟串口

source/OpenAMP/libmetal/test/system/generic/mutex.c

@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2015, Xilinx Inc. and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <metal-test.h>
+#include <metal/mutex.h>
+
+static const int mutex_test_count = 1000;
+
+static int mutex(void)
+{
+	metal_mutex_t lock;
+	int i;
+
+	metal_mutex_init(&lock);
+
+	for (i = 0; i < mutex_test_count; i++) {
+		metal_mutex_acquire(&lock);
+		metal_mutex_release(&lock);
+	}
+
+	return 0;
+}
+METAL_ADD_TEST(mutex);