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Commit | Line | Data |
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454c407e TZ |
1 | /* |
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" | |
26a031e1 AV |
11 | #include "util/color.h" |
12 | #include "util/evlist.h" | |
13 | #include "util/evsel.h" | |
454c407e | 14 | #include "util/session.h" |
45694aa7 | 15 | #include "util/tool.h" |
454c407e | 16 | #include "util/debug.h" |
54a3cf59 | 17 | #include "util/build-id.h" |
454c407e TZ |
18 | |
19 | #include "util/parse-options.h" | |
20 | ||
26a031e1 AV |
21 | #include <linux/list.h> |
22 | ||
5ded57ac ACM |
23 | struct perf_inject { |
24 | struct perf_tool tool; | |
25 | bool build_ids; | |
26a031e1 | 26 | bool sched_stat; |
e558a5bd AV |
27 | const char *input_name; |
28 | int pipe_output, | |
29 | output; | |
30 | u64 bytes_written; | |
26a031e1 AV |
31 | struct list_head samples; |
32 | }; | |
33 | ||
34 | struct event_entry { | |
35 | struct list_head node; | |
36 | u32 tid; | |
37 | union perf_event event[0]; | |
5ded57ac | 38 | }; |
454c407e | 39 | |
e558a5bd | 40 | static int perf_event__repipe_synth(struct perf_tool *tool, |
63c2c9f8 | 41 | union perf_event *event) |
454c407e | 42 | { |
e558a5bd | 43 | struct perf_inject *inject = container_of(tool, struct perf_inject, tool); |
454c407e TZ |
44 | uint32_t size; |
45 | void *buf = event; | |
46 | ||
47 | size = event->header.size; | |
48 | ||
49 | while (size) { | |
e558a5bd | 50 | int ret = write(inject->output, buf, size); |
454c407e TZ |
51 | if (ret < 0) |
52 | return -errno; | |
53 | ||
54 | size -= ret; | |
55 | buf += ret; | |
e558a5bd | 56 | inject->bytes_written += ret; |
454c407e TZ |
57 | } |
58 | ||
59 | return 0; | |
60 | } | |
61 | ||
45694aa7 | 62 | static int perf_event__repipe_op2_synth(struct perf_tool *tool, |
743eb868 | 63 | union perf_event *event, |
1d037ca1 IT |
64 | struct perf_session *session |
65 | __maybe_unused) | |
743eb868 | 66 | { |
63c2c9f8 | 67 | return perf_event__repipe_synth(tool, event); |
743eb868 ACM |
68 | } |
69 | ||
47c3d109 AH |
70 | static int perf_event__repipe_attr(struct perf_tool *tool, |
71 | union perf_event *event, | |
72 | struct perf_evlist **pevlist) | |
10d0f086 | 73 | { |
1a1ed1ba | 74 | int ret; |
47c3d109 AH |
75 | |
76 | ret = perf_event__process_attr(tool, event, pevlist); | |
1a1ed1ba SE |
77 | if (ret) |
78 | return ret; | |
79 | ||
47c3d109 | 80 | return perf_event__repipe_synth(tool, event); |
10d0f086 ACM |
81 | } |
82 | ||
45694aa7 | 83 | static int perf_event__repipe(struct perf_tool *tool, |
d20deb64 | 84 | union perf_event *event, |
1d037ca1 | 85 | struct perf_sample *sample __maybe_unused, |
63c2c9f8 | 86 | struct machine *machine __maybe_unused) |
640c03ce | 87 | { |
63c2c9f8 | 88 | return perf_event__repipe_synth(tool, event); |
640c03ce ACM |
89 | } |
90 | ||
26a031e1 AV |
91 | typedef int (*inject_handler)(struct perf_tool *tool, |
92 | union perf_event *event, | |
93 | struct perf_sample *sample, | |
94 | struct perf_evsel *evsel, | |
95 | struct machine *machine); | |
96 | ||
45694aa7 | 97 | static int perf_event__repipe_sample(struct perf_tool *tool, |
d20deb64 | 98 | union perf_event *event, |
26a031e1 AV |
99 | struct perf_sample *sample, |
100 | struct perf_evsel *evsel, | |
101 | struct machine *machine) | |
9e69c210 | 102 | { |
26a031e1 AV |
103 | if (evsel->handler.func) { |
104 | inject_handler f = evsel->handler.func; | |
105 | return f(tool, event, sample, evsel, machine); | |
106 | } | |
107 | ||
54a3cf59 AV |
108 | build_id__mark_dso_hit(tool, event, sample, evsel, machine); |
109 | ||
63c2c9f8 | 110 | return perf_event__repipe_synth(tool, event); |
9e69c210 ACM |
111 | } |
112 | ||
45694aa7 | 113 | static int perf_event__repipe_mmap(struct perf_tool *tool, |
d20deb64 | 114 | union perf_event *event, |
8115d60c | 115 | struct perf_sample *sample, |
743eb868 | 116 | struct machine *machine) |
454c407e TZ |
117 | { |
118 | int err; | |
119 | ||
45694aa7 ACM |
120 | err = perf_event__process_mmap(tool, event, sample, machine); |
121 | perf_event__repipe(tool, event, sample, machine); | |
454c407e TZ |
122 | |
123 | return err; | |
124 | } | |
125 | ||
5c5e854b SE |
126 | static int perf_event__repipe_mmap2(struct perf_tool *tool, |
127 | union perf_event *event, | |
128 | struct perf_sample *sample, | |
129 | struct machine *machine) | |
130 | { | |
131 | int err; | |
132 | ||
133 | err = perf_event__process_mmap2(tool, event, sample, machine); | |
134 | perf_event__repipe(tool, event, sample, machine); | |
135 | ||
136 | return err; | |
137 | } | |
138 | ||
f62d3f0f | 139 | static int perf_event__repipe_fork(struct perf_tool *tool, |
d20deb64 | 140 | union perf_event *event, |
8115d60c | 141 | struct perf_sample *sample, |
743eb868 | 142 | struct machine *machine) |
454c407e TZ |
143 | { |
144 | int err; | |
145 | ||
f62d3f0f | 146 | err = perf_event__process_fork(tool, event, sample, machine); |
45694aa7 | 147 | perf_event__repipe(tool, event, sample, machine); |
454c407e TZ |
148 | |
149 | return err; | |
150 | } | |
151 | ||
47c3d109 AH |
152 | static int perf_event__repipe_tracing_data(struct perf_tool *tool, |
153 | union perf_event *event, | |
8115d60c | 154 | struct perf_session *session) |
454c407e TZ |
155 | { |
156 | int err; | |
157 | ||
47c3d109 AH |
158 | perf_event__repipe_synth(tool, event); |
159 | err = perf_event__process_tracing_data(tool, event, session); | |
454c407e TZ |
160 | |
161 | return err; | |
162 | } | |
163 | ||
090f7204 | 164 | static int dso__read_build_id(struct dso *self) |
454c407e | 165 | { |
090f7204 ACM |
166 | if (self->has_build_id) |
167 | return 0; | |
454c407e | 168 | |
090f7204 ACM |
169 | if (filename__read_build_id(self->long_name, self->build_id, |
170 | sizeof(self->build_id)) > 0) { | |
171 | self->has_build_id = true; | |
172 | return 0; | |
173 | } | |
454c407e | 174 | |
090f7204 ACM |
175 | return -1; |
176 | } | |
454c407e | 177 | |
45694aa7 | 178 | static int dso__inject_build_id(struct dso *self, struct perf_tool *tool, |
743eb868 | 179 | struct machine *machine) |
090f7204 ACM |
180 | { |
181 | u16 misc = PERF_RECORD_MISC_USER; | |
090f7204 | 182 | int err; |
454c407e | 183 | |
090f7204 ACM |
184 | if (dso__read_build_id(self) < 0) { |
185 | pr_debug("no build_id found for %s\n", self->long_name); | |
186 | return -1; | |
187 | } | |
454c407e | 188 | |
090f7204 ACM |
189 | if (self->kernel) |
190 | misc = PERF_RECORD_MISC_KERNEL; | |
454c407e | 191 | |
45694aa7 | 192 | err = perf_event__synthesize_build_id(tool, self, misc, perf_event__repipe, |
743eb868 | 193 | machine); |
090f7204 ACM |
194 | if (err) { |
195 | pr_err("Can't synthesize build_id event for %s\n", self->long_name); | |
454c407e TZ |
196 | return -1; |
197 | } | |
198 | ||
199 | return 0; | |
200 | } | |
201 | ||
45694aa7 | 202 | static int perf_event__inject_buildid(struct perf_tool *tool, |
d20deb64 | 203 | union perf_event *event, |
8115d60c | 204 | struct perf_sample *sample, |
1d037ca1 | 205 | struct perf_evsel *evsel __maybe_unused, |
743eb868 | 206 | struct machine *machine) |
454c407e TZ |
207 | { |
208 | struct addr_location al; | |
209 | struct thread *thread; | |
210 | u8 cpumode; | |
454c407e TZ |
211 | |
212 | cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
213 | ||
ef89325f | 214 | thread = machine__findnew_thread(machine, sample->pid, sample->pid); |
454c407e TZ |
215 | if (thread == NULL) { |
216 | pr_err("problem processing %d event, skipping it.\n", | |
217 | event->header.type); | |
454c407e TZ |
218 | goto repipe; |
219 | } | |
220 | ||
743eb868 | 221 | thread__find_addr_map(thread, machine, cpumode, MAP__FUNCTION, |
ef89325f | 222 | sample->ip, &al); |
454c407e TZ |
223 | |
224 | if (al.map != NULL) { | |
225 | if (!al.map->dso->hit) { | |
226 | al.map->dso->hit = 1; | |
090f7204 | 227 | if (map__load(al.map, NULL) >= 0) { |
45694aa7 | 228 | dso__inject_build_id(al.map->dso, tool, machine); |
090f7204 ACM |
229 | /* |
230 | * If this fails, too bad, let the other side | |
231 | * account this as unresolved. | |
232 | */ | |
393be2e3 | 233 | } else { |
29a0fc9b | 234 | #ifdef LIBELF_SUPPORT |
454c407e TZ |
235 | pr_warning("no symbols found in %s, maybe " |
236 | "install a debug package?\n", | |
237 | al.map->dso->long_name); | |
393be2e3 NK |
238 | #endif |
239 | } | |
454c407e TZ |
240 | } |
241 | } | |
242 | ||
243 | repipe: | |
45694aa7 | 244 | perf_event__repipe(tool, event, sample, machine); |
090f7204 | 245 | return 0; |
454c407e TZ |
246 | } |
247 | ||
26a031e1 AV |
248 | static int perf_inject__sched_process_exit(struct perf_tool *tool, |
249 | union perf_event *event __maybe_unused, | |
250 | struct perf_sample *sample, | |
251 | struct perf_evsel *evsel __maybe_unused, | |
252 | struct machine *machine __maybe_unused) | |
253 | { | |
254 | struct perf_inject *inject = container_of(tool, struct perf_inject, tool); | |
255 | struct event_entry *ent; | |
256 | ||
257 | list_for_each_entry(ent, &inject->samples, node) { | |
258 | if (sample->tid == ent->tid) { | |
259 | list_del_init(&ent->node); | |
260 | free(ent); | |
261 | break; | |
262 | } | |
263 | } | |
264 | ||
265 | return 0; | |
266 | } | |
267 | ||
268 | static int perf_inject__sched_switch(struct perf_tool *tool, | |
269 | union perf_event *event, | |
270 | struct perf_sample *sample, | |
271 | struct perf_evsel *evsel, | |
272 | struct machine *machine) | |
273 | { | |
274 | struct perf_inject *inject = container_of(tool, struct perf_inject, tool); | |
275 | struct event_entry *ent; | |
276 | ||
277 | perf_inject__sched_process_exit(tool, event, sample, evsel, machine); | |
278 | ||
279 | ent = malloc(event->header.size + sizeof(struct event_entry)); | |
280 | if (ent == NULL) { | |
281 | color_fprintf(stderr, PERF_COLOR_RED, | |
282 | "Not enough memory to process sched switch event!"); | |
283 | return -1; | |
284 | } | |
285 | ||
286 | ent->tid = sample->tid; | |
287 | memcpy(&ent->event, event, event->header.size); | |
288 | list_add(&ent->node, &inject->samples); | |
289 | return 0; | |
290 | } | |
291 | ||
292 | static int perf_inject__sched_stat(struct perf_tool *tool, | |
293 | union perf_event *event __maybe_unused, | |
294 | struct perf_sample *sample, | |
295 | struct perf_evsel *evsel, | |
296 | struct machine *machine) | |
297 | { | |
298 | struct event_entry *ent; | |
299 | union perf_event *event_sw; | |
300 | struct perf_sample sample_sw; | |
301 | struct perf_inject *inject = container_of(tool, struct perf_inject, tool); | |
302 | u32 pid = perf_evsel__intval(evsel, sample, "pid"); | |
303 | ||
304 | list_for_each_entry(ent, &inject->samples, node) { | |
305 | if (pid == ent->tid) | |
306 | goto found; | |
307 | } | |
308 | ||
309 | return 0; | |
310 | found: | |
311 | event_sw = &ent->event[0]; | |
312 | perf_evsel__parse_sample(evsel, event_sw, &sample_sw); | |
313 | ||
314 | sample_sw.period = sample->period; | |
315 | sample_sw.time = sample->time; | |
316 | perf_event__synthesize_sample(event_sw, evsel->attr.sample_type, | |
d03f2170 AH |
317 | evsel->attr.sample_regs_user, |
318 | evsel->attr.read_format, &sample_sw, | |
319 | false); | |
54a3cf59 | 320 | build_id__mark_dso_hit(tool, event_sw, &sample_sw, evsel, machine); |
26a031e1 AV |
321 | return perf_event__repipe(tool, event_sw, &sample_sw, machine); |
322 | } | |
323 | ||
1d037ca1 | 324 | static void sig_handler(int sig __maybe_unused) |
454c407e TZ |
325 | { |
326 | session_done = 1; | |
327 | } | |
328 | ||
26a031e1 AV |
329 | static int perf_evsel__check_stype(struct perf_evsel *evsel, |
330 | u64 sample_type, const char *sample_msg) | |
331 | { | |
332 | struct perf_event_attr *attr = &evsel->attr; | |
333 | const char *name = perf_evsel__name(evsel); | |
334 | ||
335 | if (!(attr->sample_type & sample_type)) { | |
336 | pr_err("Samples for %s event do not have %s attribute set.", | |
337 | name, sample_msg); | |
338 | return -EINVAL; | |
339 | } | |
340 | ||
341 | return 0; | |
342 | } | |
343 | ||
5ded57ac | 344 | static int __cmd_inject(struct perf_inject *inject) |
454c407e TZ |
345 | { |
346 | struct perf_session *session; | |
347 | int ret = -EINVAL; | |
348 | ||
349 | signal(SIGINT, sig_handler); | |
350 | ||
54a3cf59 | 351 | if (inject->build_ids || inject->sched_stat) { |
5ded57ac | 352 | inject->tool.mmap = perf_event__repipe_mmap; |
5c5e854b | 353 | inject->tool.mmap2 = perf_event__repipe_mmap2; |
f62d3f0f | 354 | inject->tool.fork = perf_event__repipe_fork; |
5ded57ac | 355 | inject->tool.tracing_data = perf_event__repipe_tracing_data; |
454c407e TZ |
356 | } |
357 | ||
e558a5bd | 358 | session = perf_session__new(inject->input_name, O_RDONLY, false, true, &inject->tool); |
454c407e TZ |
359 | if (session == NULL) |
360 | return -ENOMEM; | |
361 | ||
54a3cf59 AV |
362 | if (inject->build_ids) { |
363 | inject->tool.sample = perf_event__inject_buildid; | |
364 | } else if (inject->sched_stat) { | |
26a031e1 AV |
365 | struct perf_evsel *evsel; |
366 | ||
367 | inject->tool.ordered_samples = true; | |
368 | ||
369 | list_for_each_entry(evsel, &session->evlist->entries, node) { | |
370 | const char *name = perf_evsel__name(evsel); | |
371 | ||
372 | if (!strcmp(name, "sched:sched_switch")) { | |
373 | if (perf_evsel__check_stype(evsel, PERF_SAMPLE_TID, "TID")) | |
374 | return -EINVAL; | |
375 | ||
376 | evsel->handler.func = perf_inject__sched_switch; | |
377 | } else if (!strcmp(name, "sched:sched_process_exit")) | |
378 | evsel->handler.func = perf_inject__sched_process_exit; | |
379 | else if (!strncmp(name, "sched:sched_stat_", 17)) | |
380 | evsel->handler.func = perf_inject__sched_stat; | |
381 | } | |
382 | } | |
383 | ||
e558a5bd AV |
384 | if (!inject->pipe_output) |
385 | lseek(inject->output, session->header.data_offset, SEEK_SET); | |
386 | ||
5ded57ac | 387 | ret = perf_session__process_events(session, &inject->tool); |
454c407e | 388 | |
e558a5bd AV |
389 | if (!inject->pipe_output) { |
390 | session->header.data_size = inject->bytes_written; | |
391 | perf_session__write_header(session, session->evlist, inject->output, true); | |
392 | } | |
393 | ||
454c407e TZ |
394 | perf_session__delete(session); |
395 | ||
396 | return ret; | |
397 | } | |
398 | ||
1d037ca1 | 399 | int cmd_inject(int argc, const char **argv, const char *prefix __maybe_unused) |
454c407e | 400 | { |
5ded57ac ACM |
401 | struct perf_inject inject = { |
402 | .tool = { | |
403 | .sample = perf_event__repipe_sample, | |
404 | .mmap = perf_event__repipe, | |
5c5e854b | 405 | .mmap2 = perf_event__repipe, |
5ded57ac ACM |
406 | .comm = perf_event__repipe, |
407 | .fork = perf_event__repipe, | |
408 | .exit = perf_event__repipe, | |
409 | .lost = perf_event__repipe, | |
410 | .read = perf_event__repipe_sample, | |
411 | .throttle = perf_event__repipe, | |
412 | .unthrottle = perf_event__repipe, | |
413 | .attr = perf_event__repipe_attr, | |
47c3d109 | 414 | .tracing_data = perf_event__repipe_op2_synth, |
a609bda7 | 415 | .finished_round = perf_event__repipe_op2_synth, |
5ded57ac ACM |
416 | .build_id = perf_event__repipe_op2_synth, |
417 | }, | |
e558a5bd | 418 | .input_name = "-", |
26a031e1 | 419 | .samples = LIST_HEAD_INIT(inject.samples), |
5ded57ac | 420 | }; |
e558a5bd | 421 | const char *output_name = "-"; |
5ded57ac ACM |
422 | const struct option options[] = { |
423 | OPT_BOOLEAN('b', "build-ids", &inject.build_ids, | |
424 | "Inject build-ids into the output stream"), | |
e558a5bd AV |
425 | OPT_STRING('i', "input", &inject.input_name, "file", |
426 | "input file name"), | |
427 | OPT_STRING('o', "output", &output_name, "file", | |
428 | "output file name"), | |
26a031e1 AV |
429 | OPT_BOOLEAN('s', "sched-stat", &inject.sched_stat, |
430 | "Merge sched-stat and sched-switch for getting events " | |
431 | "where and how long tasks slept"), | |
5ded57ac ACM |
432 | OPT_INCR('v', "verbose", &verbose, |
433 | "be more verbose (show build ids, etc)"), | |
434 | OPT_END() | |
435 | }; | |
002439e8 ACM |
436 | const char * const inject_usage[] = { |
437 | "perf inject [<options>]", | |
438 | NULL | |
439 | }; | |
5ded57ac | 440 | |
002439e8 | 441 | argc = parse_options(argc, argv, options, inject_usage, 0); |
454c407e TZ |
442 | |
443 | /* | |
444 | * Any (unrecognized) arguments left? | |
445 | */ | |
446 | if (argc) | |
002439e8 | 447 | usage_with_options(inject_usage, options); |
454c407e | 448 | |
e558a5bd AV |
449 | if (!strcmp(output_name, "-")) { |
450 | inject.pipe_output = 1; | |
451 | inject.output = STDOUT_FILENO; | |
452 | } else { | |
453 | inject.output = open(output_name, O_CREAT | O_WRONLY | O_TRUNC, | |
454 | S_IRUSR | S_IWUSR); | |
455 | if (inject.output < 0) { | |
456 | perror("failed to create output file"); | |
457 | return -1; | |
458 | } | |
459 | } | |
460 | ||
454c407e TZ |
461 | if (symbol__init() < 0) |
462 | return -1; | |
463 | ||
5ded57ac | 464 | return __cmd_inject(&inject); |
454c407e | 465 | } |