Commit | Line | Data |
---|---|---|
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" |
f5fc1412 | 18 | #include "util/data.h" |
454c407e TZ |
19 | |
20 | #include "util/parse-options.h" | |
21 | ||
26a031e1 AV |
22 | #include <linux/list.h> |
23 | ||
5ded57ac | 24 | struct perf_inject { |
3406912c JO |
25 | struct perf_tool tool; |
26 | bool build_ids; | |
27 | bool sched_stat; | |
28 | const char *input_name; | |
29 | struct perf_data_file output; | |
30 | u64 bytes_written; | |
31 | struct list_head samples; | |
26a031e1 AV |
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); |
3406912c | 44 | ssize_t size; |
454c407e | 45 | |
3406912c JO |
46 | size = perf_data_file__write(&inject->output, event, |
47 | event->header.size); | |
48 | if (size < 0) | |
49 | return -errno; | |
454c407e | 50 | |
3406912c | 51 | inject->bytes_written += size; |
454c407e TZ |
52 | return 0; |
53 | } | |
54 | ||
45694aa7 | 55 | static int perf_event__repipe_op2_synth(struct perf_tool *tool, |
743eb868 | 56 | union perf_event *event, |
1d037ca1 IT |
57 | struct perf_session *session |
58 | __maybe_unused) | |
743eb868 | 59 | { |
63c2c9f8 | 60 | return perf_event__repipe_synth(tool, event); |
743eb868 ACM |
61 | } |
62 | ||
47c3d109 AH |
63 | static int perf_event__repipe_attr(struct perf_tool *tool, |
64 | union perf_event *event, | |
65 | struct perf_evlist **pevlist) | |
10d0f086 | 66 | { |
89c97d93 AH |
67 | struct perf_inject *inject = container_of(tool, struct perf_inject, |
68 | tool); | |
1a1ed1ba | 69 | int ret; |
47c3d109 AH |
70 | |
71 | ret = perf_event__process_attr(tool, event, pevlist); | |
1a1ed1ba SE |
72 | if (ret) |
73 | return ret; | |
74 | ||
3406912c | 75 | if (&inject->output.is_pipe) |
89c97d93 AH |
76 | return 0; |
77 | ||
47c3d109 | 78 | return perf_event__repipe_synth(tool, event); |
10d0f086 ACM |
79 | } |
80 | ||
45694aa7 | 81 | static int perf_event__repipe(struct perf_tool *tool, |
d20deb64 | 82 | union perf_event *event, |
1d037ca1 | 83 | struct perf_sample *sample __maybe_unused, |
63c2c9f8 | 84 | struct machine *machine __maybe_unused) |
640c03ce | 85 | { |
63c2c9f8 | 86 | return perf_event__repipe_synth(tool, event); |
640c03ce ACM |
87 | } |
88 | ||
26a031e1 AV |
89 | typedef int (*inject_handler)(struct perf_tool *tool, |
90 | union perf_event *event, | |
91 | struct perf_sample *sample, | |
92 | struct perf_evsel *evsel, | |
93 | struct machine *machine); | |
94 | ||
45694aa7 | 95 | static int perf_event__repipe_sample(struct perf_tool *tool, |
d20deb64 | 96 | union perf_event *event, |
26a031e1 AV |
97 | struct perf_sample *sample, |
98 | struct perf_evsel *evsel, | |
99 | struct machine *machine) | |
9e69c210 | 100 | { |
744a9719 ACM |
101 | if (evsel->handler) { |
102 | inject_handler f = evsel->handler; | |
26a031e1 AV |
103 | return f(tool, event, sample, evsel, machine); |
104 | } | |
105 | ||
54a3cf59 AV |
106 | build_id__mark_dso_hit(tool, event, sample, evsel, machine); |
107 | ||
63c2c9f8 | 108 | return perf_event__repipe_synth(tool, event); |
9e69c210 ACM |
109 | } |
110 | ||
45694aa7 | 111 | static int perf_event__repipe_mmap(struct perf_tool *tool, |
d20deb64 | 112 | union perf_event *event, |
8115d60c | 113 | struct perf_sample *sample, |
743eb868 | 114 | struct machine *machine) |
454c407e TZ |
115 | { |
116 | int err; | |
117 | ||
45694aa7 ACM |
118 | err = perf_event__process_mmap(tool, event, sample, machine); |
119 | perf_event__repipe(tool, event, sample, machine); | |
454c407e TZ |
120 | |
121 | return err; | |
122 | } | |
123 | ||
5c5e854b SE |
124 | static int perf_event__repipe_mmap2(struct perf_tool *tool, |
125 | union perf_event *event, | |
126 | struct perf_sample *sample, | |
127 | struct machine *machine) | |
128 | { | |
129 | int err; | |
130 | ||
131 | err = perf_event__process_mmap2(tool, event, sample, machine); | |
132 | perf_event__repipe(tool, event, sample, machine); | |
133 | ||
134 | return err; | |
135 | } | |
136 | ||
f62d3f0f | 137 | static int perf_event__repipe_fork(struct perf_tool *tool, |
d20deb64 | 138 | union perf_event *event, |
8115d60c | 139 | struct perf_sample *sample, |
743eb868 | 140 | struct machine *machine) |
454c407e TZ |
141 | { |
142 | int err; | |
143 | ||
f62d3f0f | 144 | err = perf_event__process_fork(tool, event, sample, machine); |
45694aa7 | 145 | perf_event__repipe(tool, event, sample, machine); |
454c407e TZ |
146 | |
147 | return err; | |
148 | } | |
149 | ||
47c3d109 AH |
150 | static int perf_event__repipe_tracing_data(struct perf_tool *tool, |
151 | union perf_event *event, | |
8115d60c | 152 | struct perf_session *session) |
454c407e TZ |
153 | { |
154 | int err; | |
155 | ||
47c3d109 AH |
156 | perf_event__repipe_synth(tool, event); |
157 | err = perf_event__process_tracing_data(tool, event, session); | |
454c407e TZ |
158 | |
159 | return err; | |
160 | } | |
161 | ||
c824c433 | 162 | static int dso__read_build_id(struct dso *dso) |
454c407e | 163 | { |
c824c433 | 164 | if (dso->has_build_id) |
090f7204 | 165 | return 0; |
454c407e | 166 | |
c824c433 ACM |
167 | if (filename__read_build_id(dso->long_name, dso->build_id, |
168 | sizeof(dso->build_id)) > 0) { | |
169 | dso->has_build_id = true; | |
090f7204 ACM |
170 | return 0; |
171 | } | |
454c407e | 172 | |
090f7204 ACM |
173 | return -1; |
174 | } | |
454c407e | 175 | |
c824c433 | 176 | static int dso__inject_build_id(struct dso *dso, struct perf_tool *tool, |
743eb868 | 177 | struct machine *machine) |
090f7204 ACM |
178 | { |
179 | u16 misc = PERF_RECORD_MISC_USER; | |
090f7204 | 180 | int err; |
454c407e | 181 | |
c824c433 ACM |
182 | if (dso__read_build_id(dso) < 0) { |
183 | pr_debug("no build_id found for %s\n", dso->long_name); | |
090f7204 ACM |
184 | return -1; |
185 | } | |
454c407e | 186 | |
c824c433 | 187 | if (dso->kernel) |
090f7204 | 188 | misc = PERF_RECORD_MISC_KERNEL; |
454c407e | 189 | |
c824c433 | 190 | err = perf_event__synthesize_build_id(tool, dso, misc, perf_event__repipe, |
743eb868 | 191 | machine); |
090f7204 | 192 | if (err) { |
c824c433 | 193 | pr_err("Can't synthesize build_id event for %s\n", dso->long_name); |
454c407e TZ |
194 | return -1; |
195 | } | |
196 | ||
197 | return 0; | |
198 | } | |
199 | ||
45694aa7 | 200 | static int perf_event__inject_buildid(struct perf_tool *tool, |
d20deb64 | 201 | union perf_event *event, |
8115d60c | 202 | struct perf_sample *sample, |
1d037ca1 | 203 | struct perf_evsel *evsel __maybe_unused, |
743eb868 | 204 | struct machine *machine) |
454c407e TZ |
205 | { |
206 | struct addr_location al; | |
207 | struct thread *thread; | |
208 | u8 cpumode; | |
454c407e TZ |
209 | |
210 | cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
211 | ||
ef89325f | 212 | thread = machine__findnew_thread(machine, sample->pid, sample->pid); |
454c407e TZ |
213 | if (thread == NULL) { |
214 | pr_err("problem processing %d event, skipping it.\n", | |
215 | event->header.type); | |
454c407e TZ |
216 | goto repipe; |
217 | } | |
218 | ||
743eb868 | 219 | thread__find_addr_map(thread, machine, cpumode, MAP__FUNCTION, |
ef89325f | 220 | sample->ip, &al); |
454c407e TZ |
221 | |
222 | if (al.map != NULL) { | |
223 | if (!al.map->dso->hit) { | |
224 | al.map->dso->hit = 1; | |
090f7204 | 225 | if (map__load(al.map, NULL) >= 0) { |
45694aa7 | 226 | dso__inject_build_id(al.map->dso, tool, machine); |
090f7204 ACM |
227 | /* |
228 | * If this fails, too bad, let the other side | |
229 | * account this as unresolved. | |
230 | */ | |
393be2e3 | 231 | } else { |
89fe808a | 232 | #ifdef HAVE_LIBELF_SUPPORT |
454c407e TZ |
233 | pr_warning("no symbols found in %s, maybe " |
234 | "install a debug package?\n", | |
235 | al.map->dso->long_name); | |
393be2e3 NK |
236 | #endif |
237 | } | |
454c407e TZ |
238 | } |
239 | } | |
240 | ||
241 | repipe: | |
45694aa7 | 242 | perf_event__repipe(tool, event, sample, machine); |
090f7204 | 243 | return 0; |
454c407e TZ |
244 | } |
245 | ||
26a031e1 AV |
246 | static int perf_inject__sched_process_exit(struct perf_tool *tool, |
247 | union perf_event *event __maybe_unused, | |
248 | struct perf_sample *sample, | |
249 | struct perf_evsel *evsel __maybe_unused, | |
250 | struct machine *machine __maybe_unused) | |
251 | { | |
252 | struct perf_inject *inject = container_of(tool, struct perf_inject, tool); | |
253 | struct event_entry *ent; | |
254 | ||
255 | list_for_each_entry(ent, &inject->samples, node) { | |
256 | if (sample->tid == ent->tid) { | |
257 | list_del_init(&ent->node); | |
258 | free(ent); | |
259 | break; | |
260 | } | |
261 | } | |
262 | ||
263 | return 0; | |
264 | } | |
265 | ||
266 | static int perf_inject__sched_switch(struct perf_tool *tool, | |
267 | union perf_event *event, | |
268 | struct perf_sample *sample, | |
269 | struct perf_evsel *evsel, | |
270 | struct machine *machine) | |
271 | { | |
272 | struct perf_inject *inject = container_of(tool, struct perf_inject, tool); | |
273 | struct event_entry *ent; | |
274 | ||
275 | perf_inject__sched_process_exit(tool, event, sample, evsel, machine); | |
276 | ||
277 | ent = malloc(event->header.size + sizeof(struct event_entry)); | |
278 | if (ent == NULL) { | |
279 | color_fprintf(stderr, PERF_COLOR_RED, | |
280 | "Not enough memory to process sched switch event!"); | |
281 | return -1; | |
282 | } | |
283 | ||
284 | ent->tid = sample->tid; | |
285 | memcpy(&ent->event, event, event->header.size); | |
286 | list_add(&ent->node, &inject->samples); | |
287 | return 0; | |
288 | } | |
289 | ||
290 | static int perf_inject__sched_stat(struct perf_tool *tool, | |
291 | union perf_event *event __maybe_unused, | |
292 | struct perf_sample *sample, | |
293 | struct perf_evsel *evsel, | |
294 | struct machine *machine) | |
295 | { | |
296 | struct event_entry *ent; | |
297 | union perf_event *event_sw; | |
298 | struct perf_sample sample_sw; | |
299 | struct perf_inject *inject = container_of(tool, struct perf_inject, tool); | |
300 | u32 pid = perf_evsel__intval(evsel, sample, "pid"); | |
301 | ||
302 | list_for_each_entry(ent, &inject->samples, node) { | |
303 | if (pid == ent->tid) | |
304 | goto found; | |
305 | } | |
306 | ||
307 | return 0; | |
308 | found: | |
309 | event_sw = &ent->event[0]; | |
310 | perf_evsel__parse_sample(evsel, event_sw, &sample_sw); | |
311 | ||
312 | sample_sw.period = sample->period; | |
313 | sample_sw.time = sample->time; | |
314 | perf_event__synthesize_sample(event_sw, evsel->attr.sample_type, | |
d03f2170 AH |
315 | evsel->attr.sample_regs_user, |
316 | evsel->attr.read_format, &sample_sw, | |
317 | false); | |
54a3cf59 | 318 | build_id__mark_dso_hit(tool, event_sw, &sample_sw, evsel, machine); |
26a031e1 AV |
319 | return perf_event__repipe(tool, event_sw, &sample_sw, machine); |
320 | } | |
321 | ||
1d037ca1 | 322 | static void sig_handler(int sig __maybe_unused) |
454c407e TZ |
323 | { |
324 | session_done = 1; | |
325 | } | |
326 | ||
26a031e1 AV |
327 | static int perf_evsel__check_stype(struct perf_evsel *evsel, |
328 | u64 sample_type, const char *sample_msg) | |
329 | { | |
330 | struct perf_event_attr *attr = &evsel->attr; | |
331 | const char *name = perf_evsel__name(evsel); | |
332 | ||
333 | if (!(attr->sample_type & sample_type)) { | |
334 | pr_err("Samples for %s event do not have %s attribute set.", | |
335 | name, sample_msg); | |
336 | return -EINVAL; | |
337 | } | |
338 | ||
339 | return 0; | |
340 | } | |
341 | ||
5ded57ac | 342 | static int __cmd_inject(struct perf_inject *inject) |
454c407e TZ |
343 | { |
344 | struct perf_session *session; | |
345 | int ret = -EINVAL; | |
f5fc1412 JO |
346 | struct perf_data_file file = { |
347 | .path = inject->input_name, | |
348 | .mode = PERF_DATA_MODE_READ, | |
349 | }; | |
3406912c | 350 | struct perf_data_file *file_out = &inject->output; |
454c407e TZ |
351 | |
352 | signal(SIGINT, sig_handler); | |
353 | ||
54a3cf59 | 354 | if (inject->build_ids || inject->sched_stat) { |
5ded57ac | 355 | inject->tool.mmap = perf_event__repipe_mmap; |
5c5e854b | 356 | inject->tool.mmap2 = perf_event__repipe_mmap2; |
f62d3f0f | 357 | inject->tool.fork = perf_event__repipe_fork; |
5ded57ac | 358 | inject->tool.tracing_data = perf_event__repipe_tracing_data; |
454c407e TZ |
359 | } |
360 | ||
f5fc1412 | 361 | session = perf_session__new(&file, true, &inject->tool); |
454c407e TZ |
362 | if (session == NULL) |
363 | return -ENOMEM; | |
364 | ||
54a3cf59 AV |
365 | if (inject->build_ids) { |
366 | inject->tool.sample = perf_event__inject_buildid; | |
367 | } else if (inject->sched_stat) { | |
26a031e1 AV |
368 | struct perf_evsel *evsel; |
369 | ||
370 | inject->tool.ordered_samples = true; | |
371 | ||
0050f7aa | 372 | evlist__for_each(session->evlist, evsel) { |
26a031e1 AV |
373 | const char *name = perf_evsel__name(evsel); |
374 | ||
375 | if (!strcmp(name, "sched:sched_switch")) { | |
376 | if (perf_evsel__check_stype(evsel, PERF_SAMPLE_TID, "TID")) | |
377 | return -EINVAL; | |
378 | ||
744a9719 | 379 | evsel->handler = perf_inject__sched_switch; |
26a031e1 | 380 | } else if (!strcmp(name, "sched:sched_process_exit")) |
744a9719 | 381 | evsel->handler = perf_inject__sched_process_exit; |
26a031e1 | 382 | else if (!strncmp(name, "sched:sched_stat_", 17)) |
744a9719 | 383 | evsel->handler = perf_inject__sched_stat; |
26a031e1 AV |
384 | } |
385 | } | |
386 | ||
3406912c JO |
387 | if (!file_out->is_pipe) |
388 | lseek(file_out->fd, session->header.data_offset, SEEK_SET); | |
e558a5bd | 389 | |
5ded57ac | 390 | ret = perf_session__process_events(session, &inject->tool); |
454c407e | 391 | |
3406912c | 392 | if (!file_out->is_pipe) { |
e558a5bd | 393 | session->header.data_size = inject->bytes_written; |
3406912c | 394 | perf_session__write_header(session, session->evlist, file_out->fd, true); |
e558a5bd AV |
395 | } |
396 | ||
454c407e TZ |
397 | perf_session__delete(session); |
398 | ||
399 | return ret; | |
400 | } | |
401 | ||
1d037ca1 | 402 | int cmd_inject(int argc, const char **argv, const char *prefix __maybe_unused) |
454c407e | 403 | { |
5ded57ac ACM |
404 | struct perf_inject inject = { |
405 | .tool = { | |
406 | .sample = perf_event__repipe_sample, | |
407 | .mmap = perf_event__repipe, | |
5c5e854b | 408 | .mmap2 = perf_event__repipe, |
5ded57ac ACM |
409 | .comm = perf_event__repipe, |
410 | .fork = perf_event__repipe, | |
411 | .exit = perf_event__repipe, | |
412 | .lost = perf_event__repipe, | |
413 | .read = perf_event__repipe_sample, | |
414 | .throttle = perf_event__repipe, | |
415 | .unthrottle = perf_event__repipe, | |
416 | .attr = perf_event__repipe_attr, | |
47c3d109 | 417 | .tracing_data = perf_event__repipe_op2_synth, |
a609bda7 | 418 | .finished_round = perf_event__repipe_op2_synth, |
5ded57ac ACM |
419 | .build_id = perf_event__repipe_op2_synth, |
420 | }, | |
e558a5bd | 421 | .input_name = "-", |
26a031e1 | 422 | .samples = LIST_HEAD_INIT(inject.samples), |
3406912c JO |
423 | .output = { |
424 | .path = "-", | |
425 | .mode = PERF_DATA_MODE_WRITE, | |
426 | }, | |
5ded57ac ACM |
427 | }; |
428 | const struct option options[] = { | |
429 | OPT_BOOLEAN('b', "build-ids", &inject.build_ids, | |
430 | "Inject build-ids into the output stream"), | |
e558a5bd AV |
431 | OPT_STRING('i', "input", &inject.input_name, "file", |
432 | "input file name"), | |
3406912c | 433 | OPT_STRING('o', "output", &inject.output.path, "file", |
e558a5bd | 434 | "output file name"), |
26a031e1 AV |
435 | OPT_BOOLEAN('s', "sched-stat", &inject.sched_stat, |
436 | "Merge sched-stat and sched-switch for getting events " | |
437 | "where and how long tasks slept"), | |
5ded57ac ACM |
438 | OPT_INCR('v', "verbose", &verbose, |
439 | "be more verbose (show build ids, etc)"), | |
440 | OPT_END() | |
441 | }; | |
002439e8 ACM |
442 | const char * const inject_usage[] = { |
443 | "perf inject [<options>]", | |
444 | NULL | |
445 | }; | |
5ded57ac | 446 | |
002439e8 | 447 | argc = parse_options(argc, argv, options, inject_usage, 0); |
454c407e TZ |
448 | |
449 | /* | |
450 | * Any (unrecognized) arguments left? | |
451 | */ | |
452 | if (argc) | |
002439e8 | 453 | usage_with_options(inject_usage, options); |
454c407e | 454 | |
3406912c JO |
455 | if (perf_data_file__open(&inject.output)) { |
456 | perror("failed to create output file"); | |
457 | return -1; | |
e558a5bd AV |
458 | } |
459 | ||
454c407e TZ |
460 | if (symbol__init() < 0) |
461 | return -1; | |
462 | ||
5ded57ac | 463 | return __cmd_inject(&inject); |
454c407e | 464 | } |