Linux kernel mirror (for testing)
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1/*
2 * trace-event-scripting. Scripting engine common and initialization code.
3 *
4 * Copyright (C) 2009-2010 Tom Zanussi <tzanussi@gmail.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 *
20 */
21
22#include <stdio.h>
23#include <stdlib.h>
24#include <string.h>
25#include <errno.h>
26
27#include "../perf.h"
28#include "debug.h"
29#include "util.h"
30#include "trace-event.h"
31
32struct scripting_context *scripting_context;
33
34static int flush_script_unsupported(void)
35{
36 return 0;
37}
38
39static int stop_script_unsupported(void)
40{
41 return 0;
42}
43
44static void process_event_unsupported(union perf_event *event __maybe_unused,
45 struct perf_sample *sample __maybe_unused,
46 struct perf_evsel *evsel __maybe_unused,
47 struct addr_location *al __maybe_unused)
48{
49}
50
51static void print_python_unsupported_msg(void)
52{
53 fprintf(stderr, "Python scripting not supported."
54 " Install libpython and rebuild perf to enable it.\n"
55 "For example:\n # apt-get install python-dev (ubuntu)"
56 "\n # yum install python-devel (Fedora)"
57 "\n etc.\n");
58}
59
60static int python_start_script_unsupported(const char *script __maybe_unused,
61 int argc __maybe_unused,
62 const char **argv __maybe_unused)
63{
64 print_python_unsupported_msg();
65
66 return -1;
67}
68
69static int python_generate_script_unsupported(struct tep_handle *pevent
70 __maybe_unused,
71 const char *outfile
72 __maybe_unused)
73{
74 print_python_unsupported_msg();
75
76 return -1;
77}
78
79struct scripting_ops python_scripting_unsupported_ops = {
80 .name = "Python",
81 .start_script = python_start_script_unsupported,
82 .flush_script = flush_script_unsupported,
83 .stop_script = stop_script_unsupported,
84 .process_event = process_event_unsupported,
85 .generate_script = python_generate_script_unsupported,
86};
87
88static void register_python_scripting(struct scripting_ops *scripting_ops)
89{
90 if (scripting_context == NULL)
91 scripting_context = malloc(sizeof(*scripting_context));
92
93 if (scripting_context == NULL ||
94 script_spec_register("Python", scripting_ops) ||
95 script_spec_register("py", scripting_ops)) {
96 pr_err("Error registering Python script extension: disabling it\n");
97 zfree(&scripting_context);
98 }
99}
100
101#ifndef HAVE_LIBPYTHON_SUPPORT
102void setup_python_scripting(void)
103{
104 register_python_scripting(&python_scripting_unsupported_ops);
105}
106#else
107extern struct scripting_ops python_scripting_ops;
108
109void setup_python_scripting(void)
110{
111 register_python_scripting(&python_scripting_ops);
112}
113#endif
114
115static void print_perl_unsupported_msg(void)
116{
117 fprintf(stderr, "Perl scripting not supported."
118 " Install libperl and rebuild perf to enable it.\n"
119 "For example:\n # apt-get install libperl-dev (ubuntu)"
120 "\n # yum install 'perl(ExtUtils::Embed)' (Fedora)"
121 "\n etc.\n");
122}
123
124static int perl_start_script_unsupported(const char *script __maybe_unused,
125 int argc __maybe_unused,
126 const char **argv __maybe_unused)
127{
128 print_perl_unsupported_msg();
129
130 return -1;
131}
132
133static int perl_generate_script_unsupported(struct tep_handle *pevent
134 __maybe_unused,
135 const char *outfile __maybe_unused)
136{
137 print_perl_unsupported_msg();
138
139 return -1;
140}
141
142struct scripting_ops perl_scripting_unsupported_ops = {
143 .name = "Perl",
144 .start_script = perl_start_script_unsupported,
145 .flush_script = flush_script_unsupported,
146 .stop_script = stop_script_unsupported,
147 .process_event = process_event_unsupported,
148 .generate_script = perl_generate_script_unsupported,
149};
150
151static void register_perl_scripting(struct scripting_ops *scripting_ops)
152{
153 if (scripting_context == NULL)
154 scripting_context = malloc(sizeof(*scripting_context));
155
156 if (scripting_context == NULL ||
157 script_spec_register("Perl", scripting_ops) ||
158 script_spec_register("pl", scripting_ops)) {
159 pr_err("Error registering Perl script extension: disabling it\n");
160 zfree(&scripting_context);
161 }
162}
163
164#ifndef HAVE_LIBPERL_SUPPORT
165void setup_perl_scripting(void)
166{
167 register_perl_scripting(&perl_scripting_unsupported_ops);
168}
169#else
170extern struct scripting_ops perl_scripting_ops;
171
172void setup_perl_scripting(void)
173{
174 register_perl_scripting(&perl_scripting_ops);
175}
176#endif