1 files changed, 46 insertions, 0 deletions
diff --git a/include/trace.h b/include/trace.h
new file mode 100644
index 0000000..da43572
--- /dev/null
+++ b/include/trace.h
@@ -0,0 +1,46 @@
+/* Copyright 2013-2014 IBM Corp.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * 	http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ * implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __TRACE_H
+#define __TRACE_H
+#include <ccan/short_types/short_types.h>
+#include <stddef.h>
+#include <lock.h>
+#include <trace_types.h>
+
+#define TBUF_SZ (1024 * 1024)
+
+struct cpu_thread;
+
+/* Here's one we prepared earlier. */
+void init_boot_tracebuf(struct cpu_thread *boot_cpu);
+
+struct trace_info {
+	/* Lock for writers. */
+	struct lock lock;
+	/* Exposed to kernel. */
+	struct tracebuf tb;
+};
+
+/* Allocate trace buffers once we know memory topology */
+void init_trace_buffers(void);
+
+/* This will fill in timestamp and cpu; you must do type and len. */
+void trace_add(union trace *trace, u8 type, u16 len);
+
+/* Put trace node into dt. */
+void trace_add_node(void);
+#endif /* __TRACE_H */