Add DTrace support to xenstored

Add USDT probes for significant xenstore operations to allow dynamic
tracing.

Signed-off-by: John Levon <john.levon@sun.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/tools/xenstore/xenstored_probes.d b/tools/xenstore/xenstored_probes.d
new file mode 100644
index 0000000000..f72d38f935
--- /dev/null
+++ b/tools/xenstore/xenstored_probes.d
@@ -0,0 +1,28 @@
+/*
+ * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 2 of the License.
+ */
+
+#include <sys/types.h>
+
+provider xenstore {
+	/* tx id, dom id, pid, type, msg */
+	probe msg(uint32_t, unsigned int, pid_t, int, const char *);
+	/* tx id, dom id, pid, type, reply */
+	probe reply(uint32_t, unsigned int, pid_t, int, const char *);
+	/* tx id, dom id, pid, reply */
+	probe error(uint32_t, unsigned int, pid_t, const char *);
+	/* dom id, pid, watch details */
+	probe watch_event(unsigned int, pid_t, const char *);
+};
+
+#pragma D attributes Evolving/Evolving/Common provider xenstore provider
+#pragma D attributes Private/Private/Unknown provider xenstore module
+#pragma D attributes Private/Private/Unknown provider xenstore function
+#pragma D attributes Evolving/Evolving/Common provider xenstore name
+#pragma D attributes Evolving/Evolving/Common provider xenstore args
+