Merge remote-tracking branch 'remotes/kraxel/tags/input-20200921-pull-request' into...
[qemu.git] / scripts / tracetool / backend / ust.py
1 # -*- coding: utf-8 -*-
2
3 """
4 LTTng User Space Tracing backend.
5 """
6
7 __author__ = "Lluís Vilanova <vilanova@ac.upc.edu>"
8 __copyright__ = "Copyright 2012-2017, Lluís Vilanova <vilanova@ac.upc.edu>"
9 __license__ = "GPL version 2 or (at your option) any later version"
10
11 __maintainer__ = "Stefan Hajnoczi"
12 __email__ = "stefanha@redhat.com"
13
14
15 from tracetool import out
16
17
18 PUBLIC = True
19
20
21 def generate_h_begin(events, group):
22 if group == "root":
23 header = "trace-ust-root.h"
24 else:
25 header = "trace-ust.h"
26
27 out('#include <lttng/tracepoint.h>',
28 '#include "%s"' % header,
29 '',
30 '/* tracepoint_enabled() was introduced in LTTng UST 2.7 */',
31 '#ifndef tracepoint_enabled',
32 '#define tracepoint_enabled(a, b) true',
33 '#endif',
34 '')
35
36
37 def generate_h(event, group):
38 argnames = ", ".join(event.args.names())
39 if len(event.args) > 0:
40 argnames = ", " + argnames
41
42 out(' tracepoint(qemu, %(name)s%(tp_args)s);',
43 name=event.name,
44 tp_args=argnames)
45
46
47 def generate_h_backend_dstate(event, group):
48 out(' tracepoint_enabled(qemu, %(name)s) || \\',
49 name=event.name)