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Tom Zanussi454c4072010-05-01 01:41:20 -05001/*
2 * builtin-inject.c
3 *
4 * Builtin inject command: Examine the live mode (stdin) event stream
5 * and repipe it to stdout while optionally injecting additional
6 * events into it.
7 */
8#include "builtin.h"
9
10#include "perf.h"
11#include "util/session.h"
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -020012#include "util/tool.h"
Tom Zanussi454c4072010-05-01 01:41:20 -050013#include "util/debug.h"
14
15#include "util/parse-options.h"
16
17static char const *input_name = "-";
18static bool inject_build_ids;
19
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -020020static int perf_event__repipe_synth(struct perf_tool *tool __used,
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -020021 union perf_event *event,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -020022 struct machine *machine __used)
Tom Zanussi454c4072010-05-01 01:41:20 -050023{
24 uint32_t size;
25 void *buf = event;
26
27 size = event->header.size;
28
29 while (size) {
30 int ret = write(STDOUT_FILENO, buf, size);
31 if (ret < 0)
32 return -errno;
33
34 size -= ret;
35 buf += ret;
36 }
37
38 return 0;
39}
40
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -020041static int perf_event__repipe_op2_synth(struct perf_tool *tool,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -020042 union perf_event *event,
43 struct perf_session *session __used)
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -020044{
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -020045 return perf_event__repipe_synth(tool, event, NULL);
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -020046}
47
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -020048static int perf_event__repipe_event_type_synth(struct perf_tool *tool,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -020049 union perf_event *event)
50{
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -020051 return perf_event__repipe_synth(tool, event, NULL);
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -020052}
53
54static int perf_event__repipe_tracing_data_synth(union perf_event *event,
55 struct perf_session *session __used)
56{
57 return perf_event__repipe_synth(NULL, event, NULL);
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -020058}
59
Arnaldo Carvalho de Melo10d0f082011-11-11 22:45:41 -020060static int perf_event__repipe_attr(union perf_event *event,
61 struct perf_evlist **pevlist __used)
62{
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -020063 return perf_event__repipe_synth(NULL, event, NULL);
Arnaldo Carvalho de Melo10d0f082011-11-11 22:45:41 -020064}
65
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -020066static int perf_event__repipe(struct perf_tool *tool,
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -020067 union perf_event *event,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -020068 struct perf_sample *sample __used,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -020069 struct machine *machine)
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -020070{
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -020071 return perf_event__repipe_synth(tool, event, machine);
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -020072}
73
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -020074static int perf_event__repipe_sample(struct perf_tool *tool,
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -020075 union perf_event *event,
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -030076 struct perf_sample *sample __used,
77 struct perf_evsel *evsel __used,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -020078 struct machine *machine)
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -030079{
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -020080 return perf_event__repipe_synth(tool, event, machine);
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -030081}
82
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -020083static int perf_event__repipe_mmap(struct perf_tool *tool,
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -020084 union perf_event *event,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -020085 struct perf_sample *sample,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -020086 struct machine *machine)
Tom Zanussi454c4072010-05-01 01:41:20 -050087{
88 int err;
89
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -020090 err = perf_event__process_mmap(tool, event, sample, machine);
91 perf_event__repipe(tool, event, sample, machine);
Tom Zanussi454c4072010-05-01 01:41:20 -050092
93 return err;
94}
95
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -020096static int perf_event__repipe_task(struct perf_tool *tool,
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -020097 union perf_event *event,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -020098 struct perf_sample *sample,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -020099 struct machine *machine)
Tom Zanussi454c4072010-05-01 01:41:20 -0500100{
101 int err;
102
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200103 err = perf_event__process_task(tool, event, sample, machine);
104 perf_event__repipe(tool, event, sample, machine);
Tom Zanussi454c4072010-05-01 01:41:20 -0500105
106 return err;
107}
108
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200109static int perf_event__repipe_tracing_data(union perf_event *event,
110 struct perf_session *session)
Tom Zanussi454c4072010-05-01 01:41:20 -0500111{
112 int err;
113
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200114 perf_event__repipe_synth(NULL, event, NULL);
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200115 err = perf_event__process_tracing_data(event, session);
Tom Zanussi454c4072010-05-01 01:41:20 -0500116
117 return err;
118}
119
Arnaldo Carvalho de Melo090f7202010-05-02 19:46:36 -0300120static int dso__read_build_id(struct dso *self)
Tom Zanussi454c4072010-05-01 01:41:20 -0500121{
Arnaldo Carvalho de Melo090f7202010-05-02 19:46:36 -0300122 if (self->has_build_id)
123 return 0;
Tom Zanussi454c4072010-05-01 01:41:20 -0500124
Arnaldo Carvalho de Melo090f7202010-05-02 19:46:36 -0300125 if (filename__read_build_id(self->long_name, self->build_id,
126 sizeof(self->build_id)) > 0) {
127 self->has_build_id = true;
128 return 0;
Tom Zanussi454c4072010-05-01 01:41:20 -0500129 }
130
Arnaldo Carvalho de Melo090f7202010-05-02 19:46:36 -0300131 return -1;
132}
Tom Zanussi454c4072010-05-01 01:41:20 -0500133
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200134static int dso__inject_build_id(struct dso *self, struct perf_tool *tool,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200135 struct machine *machine)
Arnaldo Carvalho de Melo090f7202010-05-02 19:46:36 -0300136{
137 u16 misc = PERF_RECORD_MISC_USER;
Arnaldo Carvalho de Melo090f7202010-05-02 19:46:36 -0300138 int err;
Tom Zanussi454c4072010-05-01 01:41:20 -0500139
Arnaldo Carvalho de Melo090f7202010-05-02 19:46:36 -0300140 if (dso__read_build_id(self) < 0) {
141 pr_debug("no build_id found for %s\n", self->long_name);
142 return -1;
143 }
Tom Zanussi454c4072010-05-01 01:41:20 -0500144
Arnaldo Carvalho de Melo090f7202010-05-02 19:46:36 -0300145 if (self->kernel)
146 misc = PERF_RECORD_MISC_KERNEL;
147
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200148 err = perf_event__synthesize_build_id(tool, self, misc, perf_event__repipe,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200149 machine);
Arnaldo Carvalho de Melo090f7202010-05-02 19:46:36 -0300150 if (err) {
151 pr_err("Can't synthesize build_id event for %s\n", self->long_name);
Tom Zanussi454c4072010-05-01 01:41:20 -0500152 return -1;
153 }
154
155 return 0;
156}
157
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200158static int perf_event__inject_buildid(struct perf_tool *tool,
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -0200159 union perf_event *event,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200160 struct perf_sample *sample,
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -0300161 struct perf_evsel *evsel __used,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200162 struct machine *machine)
Tom Zanussi454c4072010-05-01 01:41:20 -0500163{
164 struct addr_location al;
165 struct thread *thread;
166 u8 cpumode;
Tom Zanussi454c4072010-05-01 01:41:20 -0500167
168 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
169
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200170 thread = machine__findnew_thread(machine, event->ip.pid);
Tom Zanussi454c4072010-05-01 01:41:20 -0500171 if (thread == NULL) {
172 pr_err("problem processing %d event, skipping it.\n",
173 event->header.type);
Tom Zanussi454c4072010-05-01 01:41:20 -0500174 goto repipe;
175 }
176
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200177 thread__find_addr_map(thread, machine, cpumode, MAP__FUNCTION,
178 event->ip.ip, &al);
Tom Zanussi454c4072010-05-01 01:41:20 -0500179
180 if (al.map != NULL) {
181 if (!al.map->dso->hit) {
182 al.map->dso->hit = 1;
Arnaldo Carvalho de Melo090f7202010-05-02 19:46:36 -0300183 if (map__load(al.map, NULL) >= 0) {
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200184 dso__inject_build_id(al.map->dso, tool, machine);
Arnaldo Carvalho de Melo090f7202010-05-02 19:46:36 -0300185 /*
186 * If this fails, too bad, let the other side
187 * account this as unresolved.
188 */
189 } else
Tom Zanussi454c4072010-05-01 01:41:20 -0500190 pr_warning("no symbols found in %s, maybe "
191 "install a debug package?\n",
192 al.map->dso->long_name);
193 }
194 }
195
196repipe:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200197 perf_event__repipe(tool, event, sample, machine);
Arnaldo Carvalho de Melo090f7202010-05-02 19:46:36 -0300198 return 0;
Tom Zanussi454c4072010-05-01 01:41:20 -0500199}
200
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200201struct perf_tool perf_inject = {
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -0300202 .sample = perf_event__repipe_sample,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200203 .mmap = perf_event__repipe,
204 .comm = perf_event__repipe,
205 .fork = perf_event__repipe,
206 .exit = perf_event__repipe,
207 .lost = perf_event__repipe,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200208 .read = perf_event__repipe_sample,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200209 .throttle = perf_event__repipe,
210 .unthrottle = perf_event__repipe,
Arnaldo Carvalho de Melo10d0f082011-11-11 22:45:41 -0200211 .attr = perf_event__repipe_attr,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200212 .event_type = perf_event__repipe_event_type_synth,
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -0200213 .tracing_data = perf_event__repipe_tracing_data_synth,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200214 .build_id = perf_event__repipe_op2_synth,
Tom Zanussi454c4072010-05-01 01:41:20 -0500215};
216
217extern volatile int session_done;
218
219static void sig_handler(int sig __attribute__((__unused__)))
220{
221 session_done = 1;
222}
223
224static int __cmd_inject(void)
225{
226 struct perf_session *session;
227 int ret = -EINVAL;
228
229 signal(SIGINT, sig_handler);
230
231 if (inject_build_ids) {
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200232 perf_inject.sample = perf_event__inject_buildid;
233 perf_inject.mmap = perf_event__repipe_mmap;
234 perf_inject.fork = perf_event__repipe_task;
235 perf_inject.tracing_data = perf_event__repipe_tracing_data;
Tom Zanussi454c4072010-05-01 01:41:20 -0500236 }
237
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200238 session = perf_session__new(input_name, O_RDONLY, false, true, &perf_inject);
Tom Zanussi454c4072010-05-01 01:41:20 -0500239 if (session == NULL)
240 return -ENOMEM;
241
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200242 ret = perf_session__process_events(session, &perf_inject);
Tom Zanussi454c4072010-05-01 01:41:20 -0500243
244 perf_session__delete(session);
245
246 return ret;
247}
248
249static const char * const report_usage[] = {
250 "perf inject [<options>]",
251 NULL
252};
253
254static const struct option options[] = {
Arnaldo Carvalho de Melo11d232e2010-05-04 10:48:22 -0300255 OPT_BOOLEAN('b', "build-ids", &inject_build_ids,
Tom Zanussi454c4072010-05-01 01:41:20 -0500256 "Inject build-ids into the output stream"),
257 OPT_INCR('v', "verbose", &verbose,
258 "be more verbose (show build ids, etc)"),
259 OPT_END()
260};
261
262int cmd_inject(int argc, const char **argv, const char *prefix __used)
263{
264 argc = parse_options(argc, argv, options, report_usage, 0);
265
266 /*
267 * Any (unrecognized) arguments left?
268 */
269 if (argc)
270 usage_with_options(report_usage, options);
271
272 if (symbol__init() < 0)
273 return -1;
274
275 return __cmd_inject();
276}