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-rw-r--r--scripts/tracetool/backend/ust.py90
1 files changed, 90 insertions, 0 deletions
diff --git a/scripts/tracetool/backend/ust.py b/scripts/tracetool/backend/ust.py
new file mode 100644
index 0000000000..31a2ff0404
--- /dev/null
+++ b/scripts/tracetool/backend/ust.py
@@ -0,0 +1,90 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+"""
+LTTng User Space Tracing backend.
+"""
+
+__author__ = "Lluís Vilanova <vilanova@ac.upc.edu>"
+__copyright__ = "Copyright 2012, Lluís Vilanova <vilanova@ac.upc.edu>"
+__license__ = "GPL version 2 or (at your option) any later version"
+
+__maintainer__ = "Stefan Hajnoczi"
+__email__ = "stefanha@linux.vnet.ibm.com"
+
+
+from tracetool import out
+
+
+def c(events):
+ out('#include <ust/marker.h>',
+ '#undef mutex_lock',
+ '#undef mutex_unlock',
+ '#undef inline',
+ '#undef wmb',
+ '#include "trace.h"')
+
+ for e in events:
+ argnames = ", ".join(e.args.names())
+ if len(e.args) > 0:
+ argnames = ', ' + argnames
+
+ out('DEFINE_TRACE(ust_%(name)s);',
+ '',
+ 'static void ust_%(name)s_probe(%(args)s)',
+ '{',
+ ' trace_mark(ust, %(name)s, %(fmt)s%(argnames)s);',
+ '}',
+ name = e.name,
+ args = e.args,
+ fmt = e.fmt,
+ argnames = argnames,
+ )
+
+ else:
+ out('DEFINE_TRACE(ust_%(name)s);',
+ '',
+ 'static void ust_%(name)s_probe(%(args)s)',
+ '{',
+ ' trace_mark(ust, %(name)s, UST_MARKER_NOARGS);',
+ '}',
+ name = e.name,
+ args = e.args,
+ )
+
+ # register probes
+ out('',
+ 'static void __attribute__((constructor)) trace_init(void)',
+ '{')
+
+ for e in events:
+ out(' register_trace_ust_%(name)s(ust_%(name)s_probe);',
+ name = e.name,
+ )
+
+ out('}')
+
+
+def h(events):
+ out('#include <ust/tracepoint.h>',
+ '#undef mutex_lock',
+ '#undef mutex_unlock',
+ '#undef inline',
+ '#undef wmb')
+
+ for e in events:
+ if len(e.args) > 0:
+ out('DECLARE_TRACE(ust_%(name)s, TP_PROTO(%(args)s), TP_ARGS(%(argnames)s));',
+ '#define trace_%(name)s trace_ust_%(name)s',
+ name = e.name,
+ args = e.args,
+ argnames = ", ".join(e.args.names()),
+ )
+
+ else:
+ out('_DECLARE_TRACEPOINT_NOARGS(ust_%(name)s);',
+ '#define trace_%(name)s trace_ust_%(name)s',
+ name = e.name,
+ )
+
+ out()