--- /dev/null
+#ifndef _LTT_TRACER_CORE_H
+#define _LTT_TRACER_CORE_H
+
+/*
+ * Copyright (C) 2005-2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * This contains the core definitions for the Linux Trace Toolkit.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; version 2.1 of
+ * the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <lttng/kcompat/kcompat.h>
+#include <lttng/core.h>
+#include <lttng/ust-tracer.h>
+#include <urcu/list.h>
+#include <lttng/usterr-signal-safe.h>
+#include "lttng/bug.h"
+
+#include <lttng/ringbuffer-config.h>
+
+struct ltt_session;
+struct ltt_channel;
+struct ltt_event;
+
+void ust_lock(void);
+void ust_unlock(void);
+
+#endif /* _LTT_TRACER_CORE_H */