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Merge tag 'block-5.11-2021-01-10' of git://git.kernel.dk/linux-block
[linux/fpc-iii.git] / tools / perf / builtin-inject.c
blob43937f4b399ad2cabb5f39414e3d4ee6ab2c14e8
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * builtin-inject.c
4 *
5 * Builtin inject command: Examine the live mode (stdin) event stream
6 * and repipe it to stdout while optionally injecting additional
7 * events into it.
8 */
9 #include "builtin.h"
10
11 #include "util/color.h"
12 #include "util/dso.h"
13 #include "util/vdso.h"
14 #include "util/evlist.h"
15 #include "util/evsel.h"
16 #include "util/map.h"
17 #include "util/session.h"
18 #include "util/tool.h"
19 #include "util/debug.h"
20 #include "util/build-id.h"
21 #include "util/data.h"
22 #include "util/auxtrace.h"
23 #include "util/jit.h"
24 #include "util/symbol.h"
25 #include "util/synthetic-events.h"
26 #include "util/thread.h"
27 #include "util/namespaces.h"
28
29 #include <linux/err.h>
30 #include <subcmd/parse-options.h>
31 #include <uapi/linux/mman.h> /* To get things like MAP_HUGETLB even on older libc headers */
32
33 #include <linux/list.h>
34 #include <errno.h>
35 #include <signal.h>
36
37 struct perf_inject {
38 struct perf_tool tool;
39 struct perf_session *session;
40 bool build_ids;
41 bool build_id_all;
42 bool sched_stat;
43 bool have_auxtrace;
44 bool strip;
45 bool jit_mode;
46 const char *input_name;
47 struct perf_data output;
48 u64 bytes_written;
49 u64 aux_id;
50 struct list_head samples;
51 struct itrace_synth_opts itrace_synth_opts;
52 char event_copy[PERF_SAMPLE_MAX_SIZE];
53 };
54
55 struct event_entry {
56 struct list_head node;
57 u32 tid;
58 union perf_event event[];
59 };
60
61 static int dso__inject_build_id(struct dso *dso, struct perf_tool *tool,
62 struct machine *machine, u8 cpumode, u32 flags);
63
64 static int output_bytes(struct perf_inject *inject, void *buf, size_t sz)
65 {
66 ssize_t size;
67
68 size = perf_data__write(&inject->output, buf, sz);
69 if (size < 0)
70 return -errno;
71
72 inject->bytes_written += size;
73 return 0;
74 }
75
76 static int perf_event__repipe_synth(struct perf_tool *tool,
77 union perf_event *event)
78 {
79 struct perf_inject *inject = container_of(tool, struct perf_inject,
80 tool);
81
82 return output_bytes(inject, event, event->header.size);
83 }
84
85 static int perf_event__repipe_oe_synth(struct perf_tool *tool,
86 union perf_event *event,
87 struct ordered_events *oe __maybe_unused)
88 {
89 return perf_event__repipe_synth(tool, event);
90 }
91
92 #ifdef HAVE_JITDUMP
93 static int perf_event__drop_oe(struct perf_tool *tool __maybe_unused,
94 union perf_event *event __maybe_unused,
95 struct ordered_events *oe __maybe_unused)
96 {
97 return 0;
98 }
99 #endif
100
101 static int perf_event__repipe_op2_synth(struct perf_session *session,
102 union perf_event *event)
103 {
104 return perf_event__repipe_synth(session->tool, event);
105 }
106
107 static int perf_event__repipe_op4_synth(struct perf_session *session,
108 union perf_event *event,
109 u64 data __maybe_unused)
110 {
111 return perf_event__repipe_synth(session->tool, event);
112 }
113
114 static int perf_event__repipe_attr(struct perf_tool *tool,
115 union perf_event *event,
116 struct evlist **pevlist)
117 {
118 struct perf_inject *inject = container_of(tool, struct perf_inject,
119 tool);
120 int ret;
121
122 ret = perf_event__process_attr(tool, event, pevlist);
123 if (ret)
124 return ret;
125
126 if (!inject->output.is_pipe)
127 return 0;
128
129 return perf_event__repipe_synth(tool, event);
130 }
131
132 static int perf_event__repipe_event_update(struct perf_tool *tool,
133 union perf_event *event,
134 struct evlist **pevlist __maybe_unused)
135 {
136 return perf_event__repipe_synth(tool, event);
137 }
138
139 #ifdef HAVE_AUXTRACE_SUPPORT
140
141 static int copy_bytes(struct perf_inject *inject, int fd, off_t size)
142 {
143 char buf[4096];
144 ssize_t ssz;
145 int ret;
146
147 while (size > 0) {
148 ssz = read(fd, buf, min(size, (off_t)sizeof(buf)));
149 if (ssz < 0)
150 return -errno;
151 ret = output_bytes(inject, buf, ssz);
152 if (ret)
153 return ret;
154 size -= ssz;
155 }
156
157 return 0;
158 }
159
160 static s64 perf_event__repipe_auxtrace(struct perf_session *session,
161 union perf_event *event)
162 {
163 struct perf_tool *tool = session->tool;
164 struct perf_inject *inject = container_of(tool, struct perf_inject,
165 tool);
166 int ret;
167
168 inject->have_auxtrace = true;
169
170 if (!inject->output.is_pipe) {
171 off_t offset;
172
173 offset = lseek(inject->output.file.fd, 0, SEEK_CUR);
174 if (offset == -1)
175 return -errno;
176 ret = auxtrace_index__auxtrace_event(&session->auxtrace_index,
177 event, offset);
178 if (ret < 0)
179 return ret;
180 }
181
182 if (perf_data__is_pipe(session->data) || !session->one_mmap) {
183 ret = output_bytes(inject, event, event->header.size);
184 if (ret < 0)
185 return ret;
186 ret = copy_bytes(inject, perf_data__fd(session->data),
187 event->auxtrace.size);
188 } else {
189 ret = output_bytes(inject, event,
190 event->header.size + event->auxtrace.size);
191 }
192 if (ret < 0)
193 return ret;
194
195 return event->auxtrace.size;
196 }
197
198 #else
199
200 static s64
201 perf_event__repipe_auxtrace(struct perf_session *session __maybe_unused,
202 union perf_event *event __maybe_unused)
203 {
204 pr_err("AUX area tracing not supported\n");
205 return -EINVAL;
206 }
207
208 #endif
209
210 static int perf_event__repipe(struct perf_tool *tool,
211 union perf_event *event,
212 struct perf_sample *sample __maybe_unused,
213 struct machine *machine __maybe_unused)
214 {
215 return perf_event__repipe_synth(tool, event);
216 }
217
218 static int perf_event__drop(struct perf_tool *tool __maybe_unused,
219 union perf_event *event __maybe_unused,
220 struct perf_sample *sample __maybe_unused,
221 struct machine *machine __maybe_unused)
222 {
223 return 0;
224 }
225
226 static int perf_event__drop_aux(struct perf_tool *tool,
227 union perf_event *event __maybe_unused,
228 struct perf_sample *sample,
229 struct machine *machine __maybe_unused)
230 {
231 struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
232
233 if (!inject->aux_id)
234 inject->aux_id = sample->id;
235
236 return 0;
237 }
238
239 static union perf_event *
240 perf_inject__cut_auxtrace_sample(struct perf_inject *inject,
241 union perf_event *event,
242 struct perf_sample *sample)
243 {
244 size_t sz1 = sample->aux_sample.data - (void *)event;
245 size_t sz2 = event->header.size - sample->aux_sample.size - sz1;
246 union perf_event *ev = (union perf_event *)inject->event_copy;
247
248 if (sz1 > event->header.size || sz2 > event->header.size ||
249 sz1 + sz2 > event->header.size ||
250 sz1 < sizeof(struct perf_event_header) + sizeof(u64))
251 return event;
252
253 memcpy(ev, event, sz1);
254 memcpy((void *)ev + sz1, (void *)event + event->header.size - sz2, sz2);
255 ev->header.size = sz1 + sz2;
256 ((u64 *)((void *)ev + sz1))[-1] = 0;
257
258 return ev;
259 }
260
261 typedef int (*inject_handler)(struct perf_tool *tool,
262 union perf_event *event,
263 struct perf_sample *sample,
264 struct evsel *evsel,
265 struct machine *machine);
266
267 static int perf_event__repipe_sample(struct perf_tool *tool,
268 union perf_event *event,
269 struct perf_sample *sample,
270 struct evsel *evsel,
271 struct machine *machine)
272 {
273 struct perf_inject *inject = container_of(tool, struct perf_inject,
274 tool);
275
276 if (evsel && evsel->handler) {
277 inject_handler f = evsel->handler;
278 return f(tool, event, sample, evsel, machine);
279 }
280
281 build_id__mark_dso_hit(tool, event, sample, evsel, machine);
282
283 if (inject->itrace_synth_opts.set && sample->aux_sample.size)
284 event = perf_inject__cut_auxtrace_sample(inject, event, sample);
285
286 return perf_event__repipe_synth(tool, event);
287 }
288
289 static int perf_event__repipe_mmap(struct perf_tool *tool,
290 union perf_event *event,
291 struct perf_sample *sample,
292 struct machine *machine)
293 {
294 int err;
295
296 err = perf_event__process_mmap(tool, event, sample, machine);
297 perf_event__repipe(tool, event, sample, machine);
298
299 return err;
300 }
301
302 #ifdef HAVE_JITDUMP
303 static int perf_event__jit_repipe_mmap(struct perf_tool *tool,
304 union perf_event *event,
305 struct perf_sample *sample,
306 struct machine *machine)
307 {
308 struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
309 u64 n = 0;
310 int ret;
311
312 /*
313 * if jit marker, then inject jit mmaps and generate ELF images
314 */
315 ret = jit_process(inject->session, &inject->output, machine,
316 event->mmap.filename, event->mmap.pid, &n);
317 if (ret < 0)
318 return ret;
319 if (ret) {
320 inject->bytes_written += n;
321 return 0;
322 }
323 return perf_event__repipe_mmap(tool, event, sample, machine);
324 }
325 #endif
326
327 static struct dso *findnew_dso(int pid, int tid, const char *filename,
328 struct dso_id *id, struct machine *machine)
329 {
330 struct thread *thread;
331 struct nsinfo *nsi = NULL;
332 struct nsinfo *nnsi;
333 struct dso *dso;
334 bool vdso;
335
336 thread = machine__findnew_thread(machine, pid, tid);
337 if (thread == NULL) {
338 pr_err("cannot find or create a task %d/%d.\n", tid, pid);
339 return NULL;
340 }
341
342 vdso = is_vdso_map(filename);
343 nsi = nsinfo__get(thread->nsinfo);
344
345 if (vdso) {
346 /* The vdso maps are always on the host and not the
347 * container. Ensure that we don't use setns to look
348 * them up.
349 */
350 nnsi = nsinfo__copy(nsi);
351 if (nnsi) {
352 nsinfo__put(nsi);
353 nnsi->need_setns = false;
354 nsi = nnsi;
355 }
356 dso = machine__findnew_vdso(machine, thread);
357 } else {
358 dso = machine__findnew_dso_id(machine, filename, id);
359 }
360
361 if (dso)
362 dso->nsinfo = nsi;
363 else
364 nsinfo__put(nsi);
365
366 thread__put(thread);
367 return dso;
368 }
369
370 static int perf_event__repipe_buildid_mmap(struct perf_tool *tool,
371 union perf_event *event,
372 struct perf_sample *sample,
373 struct machine *machine)
374 {
375 struct dso *dso;
376
377 dso = findnew_dso(event->mmap.pid, event->mmap.tid,
378 event->mmap.filename, NULL, machine);
379
380 if (dso && !dso->hit) {
381 dso->hit = 1;
382 dso__inject_build_id(dso, tool, machine, sample->cpumode, 0);
383 dso__put(dso);
384 }
385
386 return perf_event__repipe(tool, event, sample, machine);
387 }
388
389 static int perf_event__repipe_mmap2(struct perf_tool *tool,
390 union perf_event *event,
391 struct perf_sample *sample,
392 struct machine *machine)
393 {
394 int err;
395
396 err = perf_event__process_mmap2(tool, event, sample, machine);
397 perf_event__repipe(tool, event, sample, machine);
398
399 return err;
400 }
401
402 #ifdef HAVE_JITDUMP
403 static int perf_event__jit_repipe_mmap2(struct perf_tool *tool,
404 union perf_event *event,
405 struct perf_sample *sample,
406 struct machine *machine)
407 {
408 struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
409 u64 n = 0;
410 int ret;
411
412 /*
413 * if jit marker, then inject jit mmaps and generate ELF images
414 */
415 ret = jit_process(inject->session, &inject->output, machine,
416 event->mmap2.filename, event->mmap2.pid, &n);
417 if (ret < 0)
418 return ret;
419 if (ret) {
420 inject->bytes_written += n;
421 return 0;
422 }
423 return perf_event__repipe_mmap2(tool, event, sample, machine);
424 }
425 #endif
426
427 static int perf_event__repipe_buildid_mmap2(struct perf_tool *tool,
428 union perf_event *event,
429 struct perf_sample *sample,
430 struct machine *machine)
431 {
432 struct dso_id dso_id = {
433 .maj = event->mmap2.maj,
434 .min = event->mmap2.min,
435 .ino = event->mmap2.ino,
436 .ino_generation = event->mmap2.ino_generation,
437 };
438 struct dso *dso;
439
440 dso = findnew_dso(event->mmap2.pid, event->mmap2.tid,
441 event->mmap2.filename, &dso_id, machine);
442
443 if (dso && !dso->hit) {
444 dso->hit = 1;
445 dso__inject_build_id(dso, tool, machine, sample->cpumode,
446 event->mmap2.flags);
447 dso__put(dso);
448 }
449
450 perf_event__repipe(tool, event, sample, machine);
451
452 return 0;
453 }
454
455 static int perf_event__repipe_fork(struct perf_tool *tool,
456 union perf_event *event,
457 struct perf_sample *sample,
458 struct machine *machine)
459 {
460 int err;
461
462 err = perf_event__process_fork(tool, event, sample, machine);
463 perf_event__repipe(tool, event, sample, machine);
464
465 return err;
466 }
467
468 static int perf_event__repipe_comm(struct perf_tool *tool,
469 union perf_event *event,
470 struct perf_sample *sample,
471 struct machine *machine)
472 {
473 int err;
474
475 err = perf_event__process_comm(tool, event, sample, machine);
476 perf_event__repipe(tool, event, sample, machine);
477
478 return err;
479 }
480
481 static int perf_event__repipe_namespaces(struct perf_tool *tool,
482 union perf_event *event,
483 struct perf_sample *sample,
484 struct machine *machine)
485 {
486 int err = perf_event__process_namespaces(tool, event, sample, machine);
487
488 perf_event__repipe(tool, event, sample, machine);
489
490 return err;
491 }
492
493 static int perf_event__repipe_exit(struct perf_tool *tool,
494 union perf_event *event,
495 struct perf_sample *sample,
496 struct machine *machine)
497 {
498 int err;
499
500 err = perf_event__process_exit(tool, event, sample, machine);
501 perf_event__repipe(tool, event, sample, machine);
502
503 return err;
504 }
505
506 static int perf_event__repipe_tracing_data(struct perf_session *session,
507 union perf_event *event)
508 {
509 int err;
510
511 perf_event__repipe_synth(session->tool, event);
512 err = perf_event__process_tracing_data(session, event);
513
514 return err;
515 }
516
517 static int dso__read_build_id(struct dso *dso)
518 {
519 struct nscookie nsc;
520
521 if (dso->has_build_id)
522 return 0;
523
524 nsinfo__mountns_enter(dso->nsinfo, &nsc);
525 if (filename__read_build_id(dso->long_name, &dso->bid) > 0)
526 dso->has_build_id = true;
527 nsinfo__mountns_exit(&nsc);
528
529 return dso->has_build_id ? 0 : -1;
530 }
531
532 static int dso__inject_build_id(struct dso *dso, struct perf_tool *tool,
533 struct machine *machine, u8 cpumode, u32 flags)
534 {
535 int err;
536
537 if (is_anon_memory(dso->long_name) || flags & MAP_HUGETLB)
538 return 0;
539 if (is_no_dso_memory(dso->long_name))
540 return 0;
541
542 if (dso__read_build_id(dso) < 0) {
543 pr_debug("no build_id found for %s\n", dso->long_name);
544 return -1;
545 }
546
547 err = perf_event__synthesize_build_id(tool, dso, cpumode,
548 perf_event__repipe, machine);
549 if (err) {
550 pr_err("Can't synthesize build_id event for %s\n", dso->long_name);
551 return -1;
552 }
553
554 return 0;
555 }
556
557 int perf_event__inject_buildid(struct perf_tool *tool, union perf_event *event,
558 struct perf_sample *sample,
559 struct evsel *evsel __maybe_unused,
560 struct machine *machine)
561 {
562 struct addr_location al;
563 struct thread *thread;
564
565 thread = machine__findnew_thread(machine, sample->pid, sample->tid);
566 if (thread == NULL) {
567 pr_err("problem processing %d event, skipping it.\n",
568 event->header.type);
569 goto repipe;
570 }
571
572 if (thread__find_map(thread, sample->cpumode, sample->ip, &al)) {
573 if (!al.map->dso->hit) {
574 al.map->dso->hit = 1;
575 dso__inject_build_id(al.map->dso, tool, machine,
576 sample->cpumode, al.map->flags);
577 }
578 }
579
580 thread__put(thread);
581 repipe:
582 perf_event__repipe(tool, event, sample, machine);
583 return 0;
584 }
585
586 static int perf_inject__sched_process_exit(struct perf_tool *tool,
587 union perf_event *event __maybe_unused,
588 struct perf_sample *sample,
589 struct evsel *evsel __maybe_unused,
590 struct machine *machine __maybe_unused)
591 {
592 struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
593 struct event_entry *ent;
594
595 list_for_each_entry(ent, &inject->samples, node) {
596 if (sample->tid == ent->tid) {
597 list_del_init(&ent->node);
598 free(ent);
599 break;
600 }
601 }
602
603 return 0;
604 }
605
606 static int perf_inject__sched_switch(struct perf_tool *tool,
607 union perf_event *event,
608 struct perf_sample *sample,
609 struct evsel *evsel,
610 struct machine *machine)
611 {
612 struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
613 struct event_entry *ent;
614
615 perf_inject__sched_process_exit(tool, event, sample, evsel, machine);
616
617 ent = malloc(event->header.size + sizeof(struct event_entry));
618 if (ent == NULL) {
619 color_fprintf(stderr, PERF_COLOR_RED,
620 "Not enough memory to process sched switch event!");
621 return -1;
622 }
623
624 ent->tid = sample->tid;
625 memcpy(&ent->event, event, event->header.size);
626 list_add(&ent->node, &inject->samples);
627 return 0;
628 }
629
630 static int perf_inject__sched_stat(struct perf_tool *tool,
631 union perf_event *event __maybe_unused,
632 struct perf_sample *sample,
633 struct evsel *evsel,
634 struct machine *machine)
635 {
636 struct event_entry *ent;
637 union perf_event *event_sw;
638 struct perf_sample sample_sw;
639 struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
640 u32 pid = evsel__intval(evsel, sample, "pid");
641
642 list_for_each_entry(ent, &inject->samples, node) {
643 if (pid == ent->tid)
644 goto found;
645 }
646
647 return 0;
648 found:
649 event_sw = &ent->event[0];
650 evsel__parse_sample(evsel, event_sw, &sample_sw);
651
652 sample_sw.period = sample->period;
653 sample_sw.time = sample->time;
654 perf_event__synthesize_sample(event_sw, evsel->core.attr.sample_type,
655 evsel->core.attr.read_format, &sample_sw);
656 build_id__mark_dso_hit(tool, event_sw, &sample_sw, evsel, machine);
657 return perf_event__repipe(tool, event_sw, &sample_sw, machine);
658 }
659
660 static void sig_handler(int sig __maybe_unused)
661 {
662 session_done = 1;
663 }
664
665 static int evsel__check_stype(struct evsel *evsel, u64 sample_type, const char *sample_msg)
666 {
667 struct perf_event_attr *attr = &evsel->core.attr;
668 const char *name = evsel__name(evsel);
669
670 if (!(attr->sample_type & sample_type)) {
671 pr_err("Samples for %s event do not have %s attribute set.",
672 name, sample_msg);
673 return -EINVAL;
674 }
675
676 return 0;
677 }
678
679 static int drop_sample(struct perf_tool *tool __maybe_unused,
680 union perf_event *event __maybe_unused,
681 struct perf_sample *sample __maybe_unused,
682 struct evsel *evsel __maybe_unused,
683 struct machine *machine __maybe_unused)
684 {
685 return 0;
686 }
687
688 static void strip_init(struct perf_inject *inject)
689 {
690 struct evlist *evlist = inject->session->evlist;
691 struct evsel *evsel;
692
693 inject->tool.context_switch = perf_event__drop;
694
695 evlist__for_each_entry(evlist, evsel)
696 evsel->handler = drop_sample;
697 }
698
699 static int __cmd_inject(struct perf_inject *inject)
700 {
701 int ret = -EINVAL;
702 struct perf_session *session = inject->session;
703 struct perf_data *data_out = &inject->output;
704 int fd = perf_data__fd(data_out);
705 u64 output_data_offset;
706
707 signal(SIGINT, sig_handler);
708
709 if (inject->build_ids || inject->sched_stat ||
710 inject->itrace_synth_opts.set || inject->build_id_all) {
711 inject->tool.mmap = perf_event__repipe_mmap;
712 inject->tool.mmap2 = perf_event__repipe_mmap2;
713 inject->tool.fork = perf_event__repipe_fork;
714 inject->tool.tracing_data = perf_event__repipe_tracing_data;
715 }
716
717 output_data_offset = session->header.data_offset;
718
719 if (inject->build_id_all) {
720 inject->tool.mmap = perf_event__repipe_buildid_mmap;
721 inject->tool.mmap2 = perf_event__repipe_buildid_mmap2;
722 } else if (inject->build_ids) {
723 inject->tool.sample = perf_event__inject_buildid;
724 } else if (inject->sched_stat) {
725 struct evsel *evsel;
726
727 evlist__for_each_entry(session->evlist, evsel) {
728 const char *name = evsel__name(evsel);
729
730 if (!strcmp(name, "sched:sched_switch")) {
731 if (evsel__check_stype(evsel, PERF_SAMPLE_TID, "TID"))
732 return -EINVAL;
733
734 evsel->handler = perf_inject__sched_switch;
735 } else if (!strcmp(name, "sched:sched_process_exit"))
736 evsel->handler = perf_inject__sched_process_exit;
737 else if (!strncmp(name, "sched:sched_stat_", 17))
738 evsel->handler = perf_inject__sched_stat;
739 }
740 } else if (inject->itrace_synth_opts.set) {
741 session->itrace_synth_opts = &inject->itrace_synth_opts;
742 inject->itrace_synth_opts.inject = true;
743 inject->tool.comm = perf_event__repipe_comm;
744 inject->tool.namespaces = perf_event__repipe_namespaces;
745 inject->tool.exit = perf_event__repipe_exit;
746 inject->tool.id_index = perf_event__process_id_index;
747 inject->tool.auxtrace_info = perf_event__process_auxtrace_info;
748 inject->tool.auxtrace = perf_event__process_auxtrace;
749 inject->tool.aux = perf_event__drop_aux;
750 inject->tool.itrace_start = perf_event__drop_aux,
751 inject->tool.ordered_events = true;
752 inject->tool.ordering_requires_timestamps = true;
753 /* Allow space in the header for new attributes */
754 output_data_offset = 4096;
755 if (inject->strip)
756 strip_init(inject);
757 }
758
759 if (!inject->itrace_synth_opts.set)
760 auxtrace_index__free(&session->auxtrace_index);
761
762 if (!data_out->is_pipe)
763 lseek(fd, output_data_offset, SEEK_SET);
764
765 ret = perf_session__process_events(session);
766 if (ret)
767 return ret;
768
769 if (!data_out->is_pipe) {
770 if (inject->build_ids)
771 perf_header__set_feat(&session->header,
772 HEADER_BUILD_ID);
773 /*
774 * Keep all buildids when there is unprocessed AUX data because
775 * it is not known which ones the AUX trace hits.
776 */
777 if (perf_header__has_feat(&session->header, HEADER_BUILD_ID) &&
778 inject->have_auxtrace && !inject->itrace_synth_opts.set)
779 dsos__hit_all(session);
780 /*
781 * The AUX areas have been removed and replaced with
782 * synthesized hardware events, so clear the feature flag.
783 */
784 if (inject->itrace_synth_opts.set) {
785 perf_header__clear_feat(&session->header,
786 HEADER_AUXTRACE);
787 if (inject->itrace_synth_opts.last_branch ||
788 inject->itrace_synth_opts.add_last_branch)
789 perf_header__set_feat(&session->header,
790 HEADER_BRANCH_STACK);
791 }
792 session->header.data_offset = output_data_offset;
793 session->header.data_size = inject->bytes_written;
794 perf_session__write_header(session, session->evlist, fd, true);
795 }
796
797 return ret;
798 }
799
800 int cmd_inject(int argc, const char **argv)
801 {
802 struct perf_inject inject = {
803 .tool = {
804 .sample = perf_event__repipe_sample,
805 .read = perf_event__repipe_sample,
806 .mmap = perf_event__repipe,
807 .mmap2 = perf_event__repipe,
808 .comm = perf_event__repipe,
809 .namespaces = perf_event__repipe,
810 .cgroup = perf_event__repipe,
811 .fork = perf_event__repipe,
812 .exit = perf_event__repipe,
813 .lost = perf_event__repipe,
814 .lost_samples = perf_event__repipe,
815 .aux = perf_event__repipe,
816 .itrace_start = perf_event__repipe,
817 .context_switch = perf_event__repipe,
818 .throttle = perf_event__repipe,
819 .unthrottle = perf_event__repipe,
820 .ksymbol = perf_event__repipe,
821 .bpf = perf_event__repipe,
822 .text_poke = perf_event__repipe,
823 .attr = perf_event__repipe_attr,
824 .event_update = perf_event__repipe_event_update,
825 .tracing_data = perf_event__repipe_op2_synth,
826 .finished_round = perf_event__repipe_oe_synth,
827 .build_id = perf_event__repipe_op2_synth,
828 .id_index = perf_event__repipe_op2_synth,
829 .auxtrace_info = perf_event__repipe_op2_synth,
830 .auxtrace_error = perf_event__repipe_op2_synth,
831 .time_conv = perf_event__repipe_op2_synth,
832 .thread_map = perf_event__repipe_op2_synth,
833 .cpu_map = perf_event__repipe_op2_synth,
834 .stat_config = perf_event__repipe_op2_synth,
835 .stat = perf_event__repipe_op2_synth,
836 .stat_round = perf_event__repipe_op2_synth,
837 .feature = perf_event__repipe_op2_synth,
838 .compressed = perf_event__repipe_op4_synth,
839 .auxtrace = perf_event__repipe_auxtrace,
840 },
841 .input_name = "-",
842 .samples = LIST_HEAD_INIT(inject.samples),
843 .output = {
844 .path = "-",
845 .mode = PERF_DATA_MODE_WRITE,
846 .use_stdio = true,
847 },
848 };
849 struct perf_data data = {
850 .mode = PERF_DATA_MODE_READ,
851 .use_stdio = true,
852 };
853 int ret;
854
855 struct option options[] = {
856 OPT_BOOLEAN('b', "build-ids", &inject.build_ids,
857 "Inject build-ids into the output stream"),
858 OPT_BOOLEAN(0, "buildid-all", &inject.build_id_all,
859 "Inject build-ids of all DSOs into the output stream"),
860 OPT_STRING('i', "input", &inject.input_name, "file",
861 "input file name"),
862 OPT_STRING('o', "output", &inject.output.path, "file",
863 "output file name"),
864 OPT_BOOLEAN('s', "sched-stat", &inject.sched_stat,
865 "Merge sched-stat and sched-switch for getting events "
866 "where and how long tasks slept"),
867 #ifdef HAVE_JITDUMP
868 OPT_BOOLEAN('j', "jit", &inject.jit_mode, "merge jitdump files into perf.data file"),
869 #endif
870 OPT_INCR('v', "verbose", &verbose,
871 "be more verbose (show build ids, etc)"),
872 OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name, "file",
873 "kallsyms pathname"),
874 OPT_BOOLEAN('f', "force", &data.force, "don't complain, do it"),
875 OPT_CALLBACK_OPTARG(0, "itrace", &inject.itrace_synth_opts,
876 NULL, "opts", "Instruction Tracing options\n"
877 ITRACE_HELP,
878 itrace_parse_synth_opts),
879 OPT_BOOLEAN(0, "strip", &inject.strip,
880 "strip non-synthesized events (use with --itrace)"),
881 OPT_END()
882 };
883 const char * const inject_usage[] = {
884 "perf inject [<options>]",
885 NULL
886 };
887 #ifndef HAVE_JITDUMP
888 set_option_nobuild(options, 'j', "jit", "NO_LIBELF=1", true);
889 #endif
890 argc = parse_options(argc, argv, options, inject_usage, 0);
891
892 /*
893 * Any (unrecognized) arguments left?
894 */
895 if (argc)
896 usage_with_options(inject_usage, options);
897
898 if (inject.strip && !inject.itrace_synth_opts.set) {
899 pr_err("--strip option requires --itrace option\n");
900 return -1;
901 }
902
903 if (perf_data__open(&inject.output)) {
904 perror("failed to create output file");
905 return -1;
906 }
907
908 data.path = inject.input_name;
909 inject.session = perf_session__new(&data, true, &inject.tool);
910 if (IS_ERR(inject.session))
911 return PTR_ERR(inject.session);
912
913 if (zstd_init(&(inject.session->zstd_data), 0) < 0)
914 pr_warning("Decompression initialization failed.\n");
915
916 if (inject.build_ids && !inject.build_id_all) {
917 /*
918 * to make sure the mmap records are ordered correctly
919 * and so that the correct especially due to jitted code
920 * mmaps. We cannot generate the buildid hit list and
921 * inject the jit mmaps at the same time for now.
922 */
923 inject.tool.ordered_events = true;
924 inject.tool.ordering_requires_timestamps = true;
925 }
926
927 if (inject.sched_stat) {
928 inject.tool.ordered_events = true;
929 }
930
931 #ifdef HAVE_JITDUMP
932 if (inject.jit_mode) {
933 inject.tool.mmap2 = perf_event__jit_repipe_mmap2;
934 inject.tool.mmap = perf_event__jit_repipe_mmap;
935 inject.tool.ordered_events = true;
936 inject.tool.ordering_requires_timestamps = true;
937 /*
938 * JIT MMAP injection injects all MMAP events in one go, so it
939 * does not obey finished_round semantics.
940 */
941 inject.tool.finished_round = perf_event__drop_oe;
942 }
943 #endif
944 ret = symbol__init(&inject.session->header.env);
945 if (ret < 0)
946 goto out_delete;
947
948 ret = __cmd_inject(&inject);
949
950 out_delete:
951 zstd_fini(&(inject.session->zstd_data));
952 perf_session__delete(inject.session);
953 return ret;
954 }
Linux with added FPC-III support