jcs.org
qemu with hax to log dma reads & writes
jcs.org/2018/11/12/vfio
1#!/usr/bin/env python
2# -*- coding: utf-8 -*-
3
4"""
5LTTng User Space Tracing backend.
6"""
7
8__author__ = "Lluís Vilanova <vilanova@ac.upc.edu>"
9__copyright__ = "Copyright 2012-2017, Lluís Vilanova <vilanova@ac.upc.edu>"
10__license__ = "GPL version 2 or (at your option) any later version"
11
12__maintainer__ = "Stefan Hajnoczi"
13__email__ = "stefanha@linux.vnet.ibm.com"
14
15
16from tracetool import out
17
18
19PUBLIC = True
20
21
22def generate_h_begin(events, group):
23 if group == "root":
24 header = "trace-ust-root.h"
25 else:
26 header = "trace-ust.h"
27
28 out('#include <lttng/tracepoint.h>',
29 '#include "%s"' % header,
30 '',
31 '/* tracepoint_enabled() was introduced in LTTng UST 2.7 */',
32 '#ifndef tracepoint_enabled',
33 '#define tracepoint_enabled(a, b) true',
34 '#endif',
35 '')
36
37
38def generate_h(event, group):
39 argnames = ", ".join(event.args.names())
40 if len(event.args) > 0:
41 argnames = ", " + argnames
42
43 out(' tracepoint(qemu, %(name)s%(tp_args)s);',
44 name=event.name,
45 tp_args=argnames)
46
47
48def generate_h_backend_dstate(event, group):
49 out(' tracepoint_enabled(qemu, %(name)s) || \\',
50 name=event.name)