--- /dev/null
+#ifndef _TP_SAMPLES_TRACE_H
+#define _TP_SAMPLES_TRACE_H
+
+#include <linux/proc_fs.h> /* for struct inode and struct file */
+#include <linux/tracepoint.h>
+
+DEFINE_TRACE(subsys_event,
+ TPPROTO(struct inode *inode, struct file *file),
+ TPARGS(inode, file));
+DEFINE_TRACE(subsys_eventb,
+ TPPROTO(void),
+ TPARGS());
+#endif