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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/evlist.h"
14#include "util/evsel.h"
15#include "util/map.h"
16#include "util/session.h"
17#include "util/tool.h"
18#include "util/debug.h"
19#include "util/build-id.h"
20#include "util/data.h"
21#include "util/auxtrace.h"
22#include "util/jit.h"
23#include "util/symbol.h"
24#include "util/synthetic-events.h"
25#include "util/thread.h"
26#include <linux/err.h>
27
28#include <subcmd/parse-options.h>
29
30#include <linux/list.h>
31#include <errno.h>
32#include <signal.h>
33
34struct perf_inject {
35 struct perf_tool tool;
36 struct perf_session *session;
37 bool build_ids;
38 bool sched_stat;
39 bool have_auxtrace;
40 bool strip;
41 bool jit_mode;
42 const char *input_name;
43 struct perf_data output;
44 u64 bytes_written;
45 u64 aux_id;
46 struct list_head samples;
47 struct itrace_synth_opts itrace_synth_opts;
48};
49
50struct event_entry {
51 struct list_head node;
52 u32 tid;
53 union perf_event event[0];
54};
55
56static int output_bytes(struct perf_inject *inject, void *buf, size_t sz)
57{
58 ssize_t size;
59
60 size = perf_data__write(&inject->output, buf, sz);
61 if (size < 0)
62 return -errno;
63
64 inject->bytes_written += size;
65 return 0;
66}
67
68static int perf_event__repipe_synth(struct perf_tool *tool,
69 union perf_event *event)
70{
71 struct perf_inject *inject = container_of(tool, struct perf_inject,
72 tool);
73
74 return output_bytes(inject, event, event->header.size);
75}
76
77static int perf_event__repipe_oe_synth(struct perf_tool *tool,
78 union perf_event *event,
79 struct ordered_events *oe __maybe_unused)
80{
81 return perf_event__repipe_synth(tool, event);
82}
83
84#ifdef HAVE_JITDUMP
85static int perf_event__drop_oe(struct perf_tool *tool __maybe_unused,
86 union perf_event *event __maybe_unused,
87 struct ordered_events *oe __maybe_unused)
88{
89 return 0;
90}
91#endif
92
93static int perf_event__repipe_op2_synth(struct perf_session *session,
94 union perf_event *event)
95{
96 return perf_event__repipe_synth(session->tool, event);
97}
98
99static int perf_event__repipe_attr(struct perf_tool *tool,
100 union perf_event *event,
101 struct evlist **pevlist)
102{
103 struct perf_inject *inject = container_of(tool, struct perf_inject,
104 tool);
105 int ret;
106
107 ret = perf_event__process_attr(tool, event, pevlist);
108 if (ret)
109 return ret;
110
111 if (!inject->output.is_pipe)
112 return 0;
113
114 return perf_event__repipe_synth(tool, event);
115}
116
117#ifdef HAVE_AUXTRACE_SUPPORT
118
119static int copy_bytes(struct perf_inject *inject, int fd, off_t size)
120{
121 char buf[4096];
122 ssize_t ssz;
123 int ret;
124
125 while (size > 0) {
126 ssz = read(fd, buf, min(size, (off_t)sizeof(buf)));
127 if (ssz < 0)
128 return -errno;
129 ret = output_bytes(inject, buf, ssz);
130 if (ret)
131 return ret;
132 size -= ssz;
133 }
134
135 return 0;
136}
137
138static s64 perf_event__repipe_auxtrace(struct perf_session *session,
139 union perf_event *event)
140{
141 struct perf_tool *tool = session->tool;
142 struct perf_inject *inject = container_of(tool, struct perf_inject,
143 tool);
144 int ret;
145
146 inject->have_auxtrace = true;
147
148 if (!inject->output.is_pipe) {
149 off_t offset;
150
151 offset = lseek(inject->output.file.fd, 0, SEEK_CUR);
152 if (offset == -1)
153 return -errno;
154 ret = auxtrace_index__auxtrace_event(&session->auxtrace_index,
155 event, offset);
156 if (ret < 0)
157 return ret;
158 }
159
160 if (perf_data__is_pipe(session->data) || !session->one_mmap) {
161 ret = output_bytes(inject, event, event->header.size);
162 if (ret < 0)
163 return ret;
164 ret = copy_bytes(inject, perf_data__fd(session->data),
165 event->auxtrace.size);
166 } else {
167 ret = output_bytes(inject, event,
168 event->header.size + event->auxtrace.size);
169 }
170 if (ret < 0)
171 return ret;
172
173 return event->auxtrace.size;
174}
175
176#else
177
178static s64
179perf_event__repipe_auxtrace(struct perf_session *session __maybe_unused,
180 union perf_event *event __maybe_unused)
181{
182 pr_err("AUX area tracing not supported\n");
183 return -EINVAL;
184}
185
186#endif
187
188static int perf_event__repipe(struct perf_tool *tool,
189 union perf_event *event,
190 struct perf_sample *sample __maybe_unused,
191 struct machine *machine __maybe_unused)
192{
193 return perf_event__repipe_synth(tool, event);
194}
195
196static int perf_event__drop(struct perf_tool *tool __maybe_unused,
197 union perf_event *event __maybe_unused,
198 struct perf_sample *sample __maybe_unused,
199 struct machine *machine __maybe_unused)
200{
201 return 0;
202}
203
204static int perf_event__drop_aux(struct perf_tool *tool,
205 union perf_event *event __maybe_unused,
206 struct perf_sample *sample,
207 struct machine *machine __maybe_unused)
208{
209 struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
210
211 if (!inject->aux_id)
212 inject->aux_id = sample->id;
213
214 return 0;
215}
216
217typedef int (*inject_handler)(struct perf_tool *tool,
218 union perf_event *event,
219 struct perf_sample *sample,
220 struct evsel *evsel,
221 struct machine *machine);
222
223static int perf_event__repipe_sample(struct perf_tool *tool,
224 union perf_event *event,
225 struct perf_sample *sample,
226 struct evsel *evsel,
227 struct machine *machine)
228{
229 if (evsel && evsel->handler) {
230 inject_handler f = evsel->handler;
231 return f(tool, event, sample, evsel, machine);
232 }
233
234 build_id__mark_dso_hit(tool, event, sample, evsel, machine);
235
236 return perf_event__repipe_synth(tool, event);
237}
238
239static int perf_event__repipe_mmap(struct perf_tool *tool,
240 union perf_event *event,
241 struct perf_sample *sample,
242 struct machine *machine)
243{
244 int err;
245
246 err = perf_event__process_mmap(tool, event, sample, machine);
247 perf_event__repipe(tool, event, sample, machine);
248
249 return err;
250}
251
252#ifdef HAVE_JITDUMP
253static int perf_event__jit_repipe_mmap(struct perf_tool *tool,
254 union perf_event *event,
255 struct perf_sample *sample,
256 struct machine *machine)
257{
258 struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
259 u64 n = 0;
260 int ret;
261
262 /*
263 * if jit marker, then inject jit mmaps and generate ELF images
264 */
265 ret = jit_process(inject->session, &inject->output, machine,
266 event->mmap.filename, sample->pid, &n);
267 if (ret < 0)
268 return ret;
269 if (ret) {
270 inject->bytes_written += n;
271 return 0;
272 }
273 return perf_event__repipe_mmap(tool, event, sample, machine);
274}
275#endif
276
277static int perf_event__repipe_mmap2(struct perf_tool *tool,
278 union perf_event *event,
279 struct perf_sample *sample,
280 struct machine *machine)
281{
282 int err;
283
284 err = perf_event__process_mmap2(tool, event, sample, machine);
285 perf_event__repipe(tool, event, sample, machine);
286
287 return err;
288}
289
290#ifdef HAVE_JITDUMP
291static int perf_event__jit_repipe_mmap2(struct perf_tool *tool,
292 union perf_event *event,
293 struct perf_sample *sample,
294 struct machine *machine)
295{
296 struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
297 u64 n = 0;
298 int ret;
299
300 /*
301 * if jit marker, then inject jit mmaps and generate ELF images
302 */
303 ret = jit_process(inject->session, &inject->output, machine,
304 event->mmap2.filename, sample->pid, &n);
305 if (ret < 0)
306 return ret;
307 if (ret) {
308 inject->bytes_written += n;
309 return 0;
310 }
311 return perf_event__repipe_mmap2(tool, event, sample, machine);
312}
313#endif
314
315static int perf_event__repipe_fork(struct perf_tool *tool,
316 union perf_event *event,
317 struct perf_sample *sample,
318 struct machine *machine)
319{
320 int err;
321
322 err = perf_event__process_fork(tool, event, sample, machine);
323 perf_event__repipe(tool, event, sample, machine);
324
325 return err;
326}
327
328static int perf_event__repipe_comm(struct perf_tool *tool,
329 union perf_event *event,
330 struct perf_sample *sample,
331 struct machine *machine)
332{
333 int err;
334
335 err = perf_event__process_comm(tool, event, sample, machine);
336 perf_event__repipe(tool, event, sample, machine);
337
338 return err;
339}
340
341static int perf_event__repipe_namespaces(struct perf_tool *tool,
342 union perf_event *event,
343 struct perf_sample *sample,
344 struct machine *machine)
345{
346 int err = perf_event__process_namespaces(tool, event, sample, machine);
347
348 perf_event__repipe(tool, event, sample, machine);
349
350 return err;
351}
352
353static int perf_event__repipe_exit(struct perf_tool *tool,
354 union perf_event *event,
355 struct perf_sample *sample,
356 struct machine *machine)
357{
358 int err;
359
360 err = perf_event__process_exit(tool, event, sample, machine);
361 perf_event__repipe(tool, event, sample, machine);
362
363 return err;
364}
365
366static int perf_event__repipe_tracing_data(struct perf_session *session,
367 union perf_event *event)
368{
369 int err;
370
371 perf_event__repipe_synth(session->tool, event);
372 err = perf_event__process_tracing_data(session, event);
373
374 return err;
375}
376
377static int perf_event__repipe_id_index(struct perf_session *session,
378 union perf_event *event)
379{
380 int err;
381
382 perf_event__repipe_synth(session->tool, event);
383 err = perf_event__process_id_index(session, event);
384
385 return err;
386}
387
388static int dso__read_build_id(struct dso *dso)
389{
390 if (dso->has_build_id)
391 return 0;
392
393 if (filename__read_build_id(dso->long_name, dso->build_id,
394 sizeof(dso->build_id)) > 0) {
395 dso->has_build_id = true;
396 return 0;
397 }
398
399 return -1;
400}
401
402static int dso__inject_build_id(struct dso *dso, struct perf_tool *tool,
403 struct machine *machine)
404{
405 u16 misc = PERF_RECORD_MISC_USER;
406 int err;
407
408 if (dso__read_build_id(dso) < 0) {
409 pr_debug("no build_id found for %s\n", dso->long_name);
410 return -1;
411 }
412
413 if (dso->kernel)
414 misc = PERF_RECORD_MISC_KERNEL;
415
416 err = perf_event__synthesize_build_id(tool, dso, misc, perf_event__repipe,
417 machine);
418 if (err) {
419 pr_err("Can't synthesize build_id event for %s\n", dso->long_name);
420 return -1;
421 }
422
423 return 0;
424}
425
426static int perf_event__inject_buildid(struct perf_tool *tool,
427 union perf_event *event,
428 struct perf_sample *sample,
429 struct evsel *evsel __maybe_unused,
430 struct machine *machine)
431{
432 struct addr_location al;
433 struct thread *thread;
434
435 thread = machine__findnew_thread(machine, sample->pid, sample->tid);
436 if (thread == NULL) {
437 pr_err("problem processing %d event, skipping it.\n",
438 event->header.type);
439 goto repipe;
440 }
441
442 if (thread__find_map(thread, sample->cpumode, sample->ip, &al)) {
443 if (!al.map->dso->hit) {
444 al.map->dso->hit = 1;
445 if (map__load(al.map) >= 0) {
446 dso__inject_build_id(al.map->dso, tool, machine);
447 /*
448 * If this fails, too bad, let the other side
449 * account this as unresolved.
450 */
451 } else {
452#ifdef HAVE_LIBELF_SUPPORT
453 pr_warning("no symbols found in %s, maybe "
454 "install a debug package?\n",
455 al.map->dso->long_name);
456#endif
457 }
458 }
459 }
460
461 thread__put(thread);
462repipe:
463 perf_event__repipe(tool, event, sample, machine);
464 return 0;
465}
466
467static int perf_inject__sched_process_exit(struct perf_tool *tool,
468 union perf_event *event __maybe_unused,
469 struct perf_sample *sample,
470 struct evsel *evsel __maybe_unused,
471 struct machine *machine __maybe_unused)
472{
473 struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
474 struct event_entry *ent;
475
476 list_for_each_entry(ent, &inject->samples, node) {
477 if (sample->tid == ent->tid) {
478 list_del_init(&ent->node);
479 free(ent);
480 break;
481 }
482 }
483
484 return 0;
485}
486
487static int perf_inject__sched_switch(struct perf_tool *tool,
488 union perf_event *event,
489 struct perf_sample *sample,
490 struct evsel *evsel,
491 struct machine *machine)
492{
493 struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
494 struct event_entry *ent;
495
496 perf_inject__sched_process_exit(tool, event, sample, evsel, machine);
497
498 ent = malloc(event->header.size + sizeof(struct event_entry));
499 if (ent == NULL) {
500 color_fprintf(stderr, PERF_COLOR_RED,
501 "Not enough memory to process sched switch event!");
502 return -1;
503 }
504
505 ent->tid = sample->tid;
506 memcpy(&ent->event, event, event->header.size);
507 list_add(&ent->node, &inject->samples);
508 return 0;
509}
510
511static int perf_inject__sched_stat(struct perf_tool *tool,
512 union perf_event *event __maybe_unused,
513 struct perf_sample *sample,
514 struct evsel *evsel,
515 struct machine *machine)
516{
517 struct event_entry *ent;
518 union perf_event *event_sw;
519 struct perf_sample sample_sw;
520 struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
521 u32 pid = perf_evsel__intval(evsel, sample, "pid");
522
523 list_for_each_entry(ent, &inject->samples, node) {
524 if (pid == ent->tid)
525 goto found;
526 }
527
528 return 0;
529found:
530 event_sw = &ent->event[0];
531 perf_evsel__parse_sample(evsel, event_sw, &sample_sw);
532
533 sample_sw.period = sample->period;
534 sample_sw.time = sample->time;
535 perf_event__synthesize_sample(event_sw, evsel->core.attr.sample_type,
536 evsel->core.attr.read_format, &sample_sw);
537 build_id__mark_dso_hit(tool, event_sw, &sample_sw, evsel, machine);
538 return perf_event__repipe(tool, event_sw, &sample_sw, machine);
539}
540
541static void sig_handler(int sig __maybe_unused)
542{
543 session_done = 1;
544}
545
546static int perf_evsel__check_stype(struct evsel *evsel,
547 u64 sample_type, const char *sample_msg)
548{
549 struct perf_event_attr *attr = &evsel->core.attr;
550 const char *name = perf_evsel__name(evsel);
551
552 if (!(attr->sample_type & sample_type)) {
553 pr_err("Samples for %s event do not have %s attribute set.",
554 name, sample_msg);
555 return -EINVAL;
556 }
557
558 return 0;
559}
560
561static int drop_sample(struct perf_tool *tool __maybe_unused,
562 union perf_event *event __maybe_unused,
563 struct perf_sample *sample __maybe_unused,
564 struct evsel *evsel __maybe_unused,
565 struct machine *machine __maybe_unused)
566{
567 return 0;
568}
569
570static void strip_init(struct perf_inject *inject)
571{
572 struct evlist *evlist = inject->session->evlist;
573 struct evsel *evsel;
574
575 inject->tool.context_switch = perf_event__drop;
576
577 evlist__for_each_entry(evlist, evsel)
578 evsel->handler = drop_sample;
579}
580
581static bool has_tracking(struct evsel *evsel)
582{
583 return evsel->core.attr.mmap || evsel->core.attr.mmap2 || evsel->core.attr.comm ||
584 evsel->core.attr.task;
585}
586
587#define COMPAT_MASK (PERF_SAMPLE_ID | PERF_SAMPLE_TID | PERF_SAMPLE_TIME | \
588 PERF_SAMPLE_ID | PERF_SAMPLE_CPU | PERF_SAMPLE_IDENTIFIER)
589
590/*
591 * In order that the perf.data file is parsable, tracking events like MMAP need
592 * their selected event to exist, except if there is only 1 selected event left
593 * and it has a compatible sample type.
594 */
595static bool ok_to_remove(struct evlist *evlist,
596 struct evsel *evsel_to_remove)
597{
598 struct evsel *evsel;
599 int cnt = 0;
600 bool ok = false;
601
602 if (!has_tracking(evsel_to_remove))
603 return true;
604
605 evlist__for_each_entry(evlist, evsel) {
606 if (evsel->handler != drop_sample) {
607 cnt += 1;
608 if ((evsel->core.attr.sample_type & COMPAT_MASK) ==
609 (evsel_to_remove->core.attr.sample_type & COMPAT_MASK))
610 ok = true;
611 }
612 }
613
614 return ok && cnt == 1;
615}
616
617static void strip_fini(struct perf_inject *inject)
618{
619 struct evlist *evlist = inject->session->evlist;
620 struct evsel *evsel, *tmp;
621
622 /* Remove non-synthesized evsels if possible */
623 evlist__for_each_entry_safe(evlist, tmp, evsel) {
624 if (evsel->handler == drop_sample &&
625 ok_to_remove(evlist, evsel)) {
626 pr_debug("Deleting %s\n", perf_evsel__name(evsel));
627 evlist__remove(evlist, evsel);
628 evsel__delete(evsel);
629 }
630 }
631}
632
633static int __cmd_inject(struct perf_inject *inject)
634{
635 int ret = -EINVAL;
636 struct perf_session *session = inject->session;
637 struct perf_data *data_out = &inject->output;
638 int fd = perf_data__fd(data_out);
639 u64 output_data_offset;
640
641 signal(SIGINT, sig_handler);
642
643 if (inject->build_ids || inject->sched_stat ||
644 inject->itrace_synth_opts.set) {
645 inject->tool.mmap = perf_event__repipe_mmap;
646 inject->tool.mmap2 = perf_event__repipe_mmap2;
647 inject->tool.fork = perf_event__repipe_fork;
648 inject->tool.tracing_data = perf_event__repipe_tracing_data;
649 }
650
651 output_data_offset = session->header.data_offset;
652
653 if (inject->build_ids) {
654 inject->tool.sample = perf_event__inject_buildid;
655 } else if (inject->sched_stat) {
656 struct evsel *evsel;
657
658 evlist__for_each_entry(session->evlist, evsel) {
659 const char *name = perf_evsel__name(evsel);
660
661 if (!strcmp(name, "sched:sched_switch")) {
662 if (perf_evsel__check_stype(evsel, PERF_SAMPLE_TID, "TID"))
663 return -EINVAL;
664
665 evsel->handler = perf_inject__sched_switch;
666 } else if (!strcmp(name, "sched:sched_process_exit"))
667 evsel->handler = perf_inject__sched_process_exit;
668 else if (!strncmp(name, "sched:sched_stat_", 17))
669 evsel->handler = perf_inject__sched_stat;
670 }
671 } else if (inject->itrace_synth_opts.set) {
672 session->itrace_synth_opts = &inject->itrace_synth_opts;
673 inject->itrace_synth_opts.inject = true;
674 inject->tool.comm = perf_event__repipe_comm;
675 inject->tool.namespaces = perf_event__repipe_namespaces;
676 inject->tool.exit = perf_event__repipe_exit;
677 inject->tool.id_index = perf_event__repipe_id_index;
678 inject->tool.auxtrace_info = perf_event__process_auxtrace_info;
679 inject->tool.auxtrace = perf_event__process_auxtrace;
680 inject->tool.aux = perf_event__drop_aux;
681 inject->tool.itrace_start = perf_event__drop_aux,
682 inject->tool.ordered_events = true;
683 inject->tool.ordering_requires_timestamps = true;
684 /* Allow space in the header for new attributes */
685 output_data_offset = 4096;
686 if (inject->strip)
687 strip_init(inject);
688 }
689
690 if (!inject->itrace_synth_opts.set)
691 auxtrace_index__free(&session->auxtrace_index);
692
693 if (!data_out->is_pipe)
694 lseek(fd, output_data_offset, SEEK_SET);
695
696 ret = perf_session__process_events(session);
697 if (ret)
698 return ret;
699
700 if (!data_out->is_pipe) {
701 if (inject->build_ids)
702 perf_header__set_feat(&session->header,
703 HEADER_BUILD_ID);
704 /*
705 * Keep all buildids when there is unprocessed AUX data because
706 * it is not known which ones the AUX trace hits.
707 */
708 if (perf_header__has_feat(&session->header, HEADER_BUILD_ID) &&
709 inject->have_auxtrace && !inject->itrace_synth_opts.set)
710 dsos__hit_all(session);
711 /*
712 * The AUX areas have been removed and replaced with
713 * synthesized hardware events, so clear the feature flag and
714 * remove the evsel.
715 */
716 if (inject->itrace_synth_opts.set) {
717 struct evsel *evsel;
718
719 perf_header__clear_feat(&session->header,
720 HEADER_AUXTRACE);
721 if (inject->itrace_synth_opts.last_branch)
722 perf_header__set_feat(&session->header,
723 HEADER_BRANCH_STACK);
724 evsel = perf_evlist__id2evsel_strict(session->evlist,
725 inject->aux_id);
726 if (evsel) {
727 pr_debug("Deleting %s\n",
728 perf_evsel__name(evsel));
729 evlist__remove(session->evlist, evsel);
730 evsel__delete(evsel);
731 }
732 if (inject->strip)
733 strip_fini(inject);
734 }
735 session->header.data_offset = output_data_offset;
736 session->header.data_size = inject->bytes_written;
737 perf_session__write_header(session, session->evlist, fd, true);
738 }
739
740 return ret;
741}
742
743int cmd_inject(int argc, const char **argv)
744{
745 struct perf_inject inject = {
746 .tool = {
747 .sample = perf_event__repipe_sample,
748 .mmap = perf_event__repipe,
749 .mmap2 = perf_event__repipe,
750 .comm = perf_event__repipe,
751 .fork = perf_event__repipe,
752 .exit = perf_event__repipe,
753 .lost = perf_event__repipe,
754 .lost_samples = perf_event__repipe,
755 .aux = perf_event__repipe,
756 .itrace_start = perf_event__repipe,
757 .context_switch = perf_event__repipe,
758 .read = perf_event__repipe_sample,
759 .throttle = perf_event__repipe,
760 .unthrottle = perf_event__repipe,
761 .attr = perf_event__repipe_attr,
762 .tracing_data = perf_event__repipe_op2_synth,
763 .auxtrace_info = perf_event__repipe_op2_synth,
764 .auxtrace = perf_event__repipe_auxtrace,
765 .auxtrace_error = perf_event__repipe_op2_synth,
766 .time_conv = perf_event__repipe_op2_synth,
767 .finished_round = perf_event__repipe_oe_synth,
768 .build_id = perf_event__repipe_op2_synth,
769 .id_index = perf_event__repipe_op2_synth,
770 .feature = perf_event__repipe_op2_synth,
771 },
772 .input_name = "-",
773 .samples = LIST_HEAD_INIT(inject.samples),
774 .output = {
775 .path = "-",
776 .mode = PERF_DATA_MODE_WRITE,
777 },
778 };
779 struct perf_data data = {
780 .mode = PERF_DATA_MODE_READ,
781 };
782 int ret;
783
784 struct option options[] = {
785 OPT_BOOLEAN('b', "build-ids", &inject.build_ids,
786 "Inject build-ids into the output stream"),
787 OPT_STRING('i', "input", &inject.input_name, "file",
788 "input file name"),
789 OPT_STRING('o', "output", &inject.output.path, "file",
790 "output file name"),
791 OPT_BOOLEAN('s', "sched-stat", &inject.sched_stat,
792 "Merge sched-stat and sched-switch for getting events "
793 "where and how long tasks slept"),
794#ifdef HAVE_JITDUMP
795 OPT_BOOLEAN('j', "jit", &inject.jit_mode, "merge jitdump files into perf.data file"),
796#endif
797 OPT_INCR('v', "verbose", &verbose,
798 "be more verbose (show build ids, etc)"),
799 OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name, "file",
800 "kallsyms pathname"),
801 OPT_BOOLEAN('f', "force", &data.force, "don't complain, do it"),
802 OPT_CALLBACK_OPTARG(0, "itrace", &inject.itrace_synth_opts,
803 NULL, "opts", "Instruction Tracing options\n"
804 ITRACE_HELP,
805 itrace_parse_synth_opts),
806 OPT_BOOLEAN(0, "strip", &inject.strip,
807 "strip non-synthesized events (use with --itrace)"),
808 OPT_END()
809 };
810 const char * const inject_usage[] = {
811 "perf inject [<options>]",
812 NULL
813 };
814#ifndef HAVE_JITDUMP
815 set_option_nobuild(options, 'j', "jit", "NO_LIBELF=1", true);
816#endif
817 argc = parse_options(argc, argv, options, inject_usage, 0);
818
819 /*
820 * Any (unrecognized) arguments left?
821 */
822 if (argc)
823 usage_with_options(inject_usage, options);
824
825 if (inject.strip && !inject.itrace_synth_opts.set) {
826 pr_err("--strip option requires --itrace option\n");
827 return -1;
828 }
829
830 if (perf_data__open(&inject.output)) {
831 perror("failed to create output file");
832 return -1;
833 }
834
835 inject.tool.ordered_events = inject.sched_stat;
836
837 data.path = inject.input_name;
838 inject.session = perf_session__new(&data, true, &inject.tool);
839 if (IS_ERR(inject.session))
840 return PTR_ERR(inject.session);
841
842 if (zstd_init(&(inject.session->zstd_data), 0) < 0)
843 pr_warning("Decompression initialization failed.\n");
844
845 if (inject.build_ids) {
846 /*
847 * to make sure the mmap records are ordered correctly
848 * and so that the correct especially due to jitted code
849 * mmaps. We cannot generate the buildid hit list and
850 * inject the jit mmaps at the same time for now.
851 */
852 inject.tool.ordered_events = true;
853 inject.tool.ordering_requires_timestamps = true;
854 }
855#ifdef HAVE_JITDUMP
856 if (inject.jit_mode) {
857 inject.tool.mmap2 = perf_event__jit_repipe_mmap2;
858 inject.tool.mmap = perf_event__jit_repipe_mmap;
859 inject.tool.ordered_events = true;
860 inject.tool.ordering_requires_timestamps = true;
861 /*
862 * JIT MMAP injection injects all MMAP events in one go, so it
863 * does not obey finished_round semantics.
864 */
865 inject.tool.finished_round = perf_event__drop_oe;
866 }
867#endif
868 ret = symbol__init(&inject.session->header.env);
869 if (ret < 0)
870 goto out_delete;
871
872 ret = __cmd_inject(&inject);
873
874out_delete:
875 zstd_fini(&(inject.session->zstd_data));
876 perf_session__delete(inject.session);
877 return ret;
878}
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/evlist.h"
14#include "util/evsel.h"
15#include "util/map.h"
16#include "util/session.h"
17#include "util/tool.h"
18#include "util/debug.h"
19#include "util/build-id.h"
20#include "util/data.h"
21#include "util/auxtrace.h"
22#include "util/jit.h"
23#include "util/symbol.h"
24#include "util/synthetic-events.h"
25#include "util/thread.h"
26#include <linux/err.h>
27
28#include <subcmd/parse-options.h>
29
30#include <linux/list.h>
31#include <errno.h>
32#include <signal.h>
33
34struct perf_inject {
35 struct perf_tool tool;
36 struct perf_session *session;
37 bool build_ids;
38 bool sched_stat;
39 bool have_auxtrace;
40 bool strip;
41 bool jit_mode;
42 const char *input_name;
43 struct perf_data output;
44 u64 bytes_written;
45 u64 aux_id;
46 struct list_head samples;
47 struct itrace_synth_opts itrace_synth_opts;
48 char event_copy[PERF_SAMPLE_MAX_SIZE];
49};
50
51struct event_entry {
52 struct list_head node;
53 u32 tid;
54 union perf_event event[];
55};
56
57static int output_bytes(struct perf_inject *inject, void *buf, size_t sz)
58{
59 ssize_t size;
60
61 size = perf_data__write(&inject->output, buf, sz);
62 if (size < 0)
63 return -errno;
64
65 inject->bytes_written += size;
66 return 0;
67}
68
69static int perf_event__repipe_synth(struct perf_tool *tool,
70 union perf_event *event)
71{
72 struct perf_inject *inject = container_of(tool, struct perf_inject,
73 tool);
74
75 return output_bytes(inject, event, event->header.size);
76}
77
78static int perf_event__repipe_oe_synth(struct perf_tool *tool,
79 union perf_event *event,
80 struct ordered_events *oe __maybe_unused)
81{
82 return perf_event__repipe_synth(tool, event);
83}
84
85#ifdef HAVE_JITDUMP
86static int perf_event__drop_oe(struct perf_tool *tool __maybe_unused,
87 union perf_event *event __maybe_unused,
88 struct ordered_events *oe __maybe_unused)
89{
90 return 0;
91}
92#endif
93
94static int perf_event__repipe_op2_synth(struct perf_session *session,
95 union perf_event *event)
96{
97 return perf_event__repipe_synth(session->tool, event);
98}
99
100static int perf_event__repipe_attr(struct perf_tool *tool,
101 union perf_event *event,
102 struct evlist **pevlist)
103{
104 struct perf_inject *inject = container_of(tool, struct perf_inject,
105 tool);
106 int ret;
107
108 ret = perf_event__process_attr(tool, event, pevlist);
109 if (ret)
110 return ret;
111
112 if (!inject->output.is_pipe)
113 return 0;
114
115 return perf_event__repipe_synth(tool, event);
116}
117
118#ifdef HAVE_AUXTRACE_SUPPORT
119
120static int copy_bytes(struct perf_inject *inject, int fd, off_t size)
121{
122 char buf[4096];
123 ssize_t ssz;
124 int ret;
125
126 while (size > 0) {
127 ssz = read(fd, buf, min(size, (off_t)sizeof(buf)));
128 if (ssz < 0)
129 return -errno;
130 ret = output_bytes(inject, buf, ssz);
131 if (ret)
132 return ret;
133 size -= ssz;
134 }
135
136 return 0;
137}
138
139static s64 perf_event__repipe_auxtrace(struct perf_session *session,
140 union perf_event *event)
141{
142 struct perf_tool *tool = session->tool;
143 struct perf_inject *inject = container_of(tool, struct perf_inject,
144 tool);
145 int ret;
146
147 inject->have_auxtrace = true;
148
149 if (!inject->output.is_pipe) {
150 off_t offset;
151
152 offset = lseek(inject->output.file.fd, 0, SEEK_CUR);
153 if (offset == -1)
154 return -errno;
155 ret = auxtrace_index__auxtrace_event(&session->auxtrace_index,
156 event, offset);
157 if (ret < 0)
158 return ret;
159 }
160
161 if (perf_data__is_pipe(session->data) || !session->one_mmap) {
162 ret = output_bytes(inject, event, event->header.size);
163 if (ret < 0)
164 return ret;
165 ret = copy_bytes(inject, perf_data__fd(session->data),
166 event->auxtrace.size);
167 } else {
168 ret = output_bytes(inject, event,
169 event->header.size + event->auxtrace.size);
170 }
171 if (ret < 0)
172 return ret;
173
174 return event->auxtrace.size;
175}
176
177#else
178
179static s64
180perf_event__repipe_auxtrace(struct perf_session *session __maybe_unused,
181 union perf_event *event __maybe_unused)
182{
183 pr_err("AUX area tracing not supported\n");
184 return -EINVAL;
185}
186
187#endif
188
189static int perf_event__repipe(struct perf_tool *tool,
190 union perf_event *event,
191 struct perf_sample *sample __maybe_unused,
192 struct machine *machine __maybe_unused)
193{
194 return perf_event__repipe_synth(tool, event);
195}
196
197static int perf_event__drop(struct perf_tool *tool __maybe_unused,
198 union perf_event *event __maybe_unused,
199 struct perf_sample *sample __maybe_unused,
200 struct machine *machine __maybe_unused)
201{
202 return 0;
203}
204
205static int perf_event__drop_aux(struct perf_tool *tool,
206 union perf_event *event __maybe_unused,
207 struct perf_sample *sample,
208 struct machine *machine __maybe_unused)
209{
210 struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
211
212 if (!inject->aux_id)
213 inject->aux_id = sample->id;
214
215 return 0;
216}
217
218static union perf_event *
219perf_inject__cut_auxtrace_sample(struct perf_inject *inject,
220 union perf_event *event,
221 struct perf_sample *sample)
222{
223 size_t sz1 = sample->aux_sample.data - (void *)event;
224 size_t sz2 = event->header.size - sample->aux_sample.size - sz1;
225 union perf_event *ev = (union perf_event *)inject->event_copy;
226
227 if (sz1 > event->header.size || sz2 > event->header.size ||
228 sz1 + sz2 > event->header.size ||
229 sz1 < sizeof(struct perf_event_header) + sizeof(u64))
230 return event;
231
232 memcpy(ev, event, sz1);
233 memcpy((void *)ev + sz1, (void *)event + event->header.size - sz2, sz2);
234 ev->header.size = sz1 + sz2;
235 ((u64 *)((void *)ev + sz1))[-1] = 0;
236
237 return ev;
238}
239
240typedef int (*inject_handler)(struct perf_tool *tool,
241 union perf_event *event,
242 struct perf_sample *sample,
243 struct evsel *evsel,
244 struct machine *machine);
245
246static int perf_event__repipe_sample(struct perf_tool *tool,
247 union perf_event *event,
248 struct perf_sample *sample,
249 struct evsel *evsel,
250 struct machine *machine)
251{
252 struct perf_inject *inject = container_of(tool, struct perf_inject,
253 tool);
254
255 if (evsel && evsel->handler) {
256 inject_handler f = evsel->handler;
257 return f(tool, event, sample, evsel, machine);
258 }
259
260 build_id__mark_dso_hit(tool, event, sample, evsel, machine);
261
262 if (inject->itrace_synth_opts.set && sample->aux_sample.size)
263 event = perf_inject__cut_auxtrace_sample(inject, event, sample);
264
265 return perf_event__repipe_synth(tool, event);
266}
267
268static int perf_event__repipe_mmap(struct perf_tool *tool,
269 union perf_event *event,
270 struct perf_sample *sample,
271 struct machine *machine)
272{
273 int err;
274
275 err = perf_event__process_mmap(tool, event, sample, machine);
276 perf_event__repipe(tool, event, sample, machine);
277
278 return err;
279}
280
281#ifdef HAVE_JITDUMP
282static int perf_event__jit_repipe_mmap(struct perf_tool *tool,
283 union perf_event *event,
284 struct perf_sample *sample,
285 struct machine *machine)
286{
287 struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
288 u64 n = 0;
289 int ret;
290
291 /*
292 * if jit marker, then inject jit mmaps and generate ELF images
293 */
294 ret = jit_process(inject->session, &inject->output, machine,
295 event->mmap.filename, event->mmap.pid, &n);
296 if (ret < 0)
297 return ret;
298 if (ret) {
299 inject->bytes_written += n;
300 return 0;
301 }
302 return perf_event__repipe_mmap(tool, event, sample, machine);
303}
304#endif
305
306static int perf_event__repipe_mmap2(struct perf_tool *tool,
307 union perf_event *event,
308 struct perf_sample *sample,
309 struct machine *machine)
310{
311 int err;
312
313 err = perf_event__process_mmap2(tool, event, sample, machine);
314 perf_event__repipe(tool, event, sample, machine);
315
316 return err;
317}
318
319#ifdef HAVE_JITDUMP
320static int perf_event__jit_repipe_mmap2(struct perf_tool *tool,
321 union perf_event *event,
322 struct perf_sample *sample,
323 struct machine *machine)
324{
325 struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
326 u64 n = 0;
327 int ret;
328
329 /*
330 * if jit marker, then inject jit mmaps and generate ELF images
331 */
332 ret = jit_process(inject->session, &inject->output, machine,
333 event->mmap2.filename, event->mmap2.pid, &n);
334 if (ret < 0)
335 return ret;
336 if (ret) {
337 inject->bytes_written += n;
338 return 0;
339 }
340 return perf_event__repipe_mmap2(tool, event, sample, machine);
341}
342#endif
343
344static int perf_event__repipe_fork(struct perf_tool *tool,
345 union perf_event *event,
346 struct perf_sample *sample,
347 struct machine *machine)
348{
349 int err;
350
351 err = perf_event__process_fork(tool, event, sample, machine);
352 perf_event__repipe(tool, event, sample, machine);
353
354 return err;
355}
356
357static int perf_event__repipe_comm(struct perf_tool *tool,
358 union perf_event *event,
359 struct perf_sample *sample,
360 struct machine *machine)
361{
362 int err;
363
364 err = perf_event__process_comm(tool, event, sample, machine);
365 perf_event__repipe(tool, event, sample, machine);
366
367 return err;
368}
369
370static int perf_event__repipe_namespaces(struct perf_tool *tool,
371 union perf_event *event,
372 struct perf_sample *sample,
373 struct machine *machine)
374{
375 int err = perf_event__process_namespaces(tool, event, sample, machine);
376
377 perf_event__repipe(tool, event, sample, machine);
378
379 return err;
380}
381
382static int perf_event__repipe_exit(struct perf_tool *tool,
383 union perf_event *event,
384 struct perf_sample *sample,
385 struct machine *machine)
386{
387 int err;
388
389 err = perf_event__process_exit(tool, event, sample, machine);
390 perf_event__repipe(tool, event, sample, machine);
391
392 return err;
393}
394
395static int perf_event__repipe_tracing_data(struct perf_session *session,
396 union perf_event *event)
397{
398 int err;
399
400 perf_event__repipe_synth(session->tool, event);
401 err = perf_event__process_tracing_data(session, event);
402
403 return err;
404}
405
406static int dso__read_build_id(struct dso *dso)
407{
408 if (dso->has_build_id)
409 return 0;
410
411 if (filename__read_build_id(dso->long_name, dso->build_id,
412 sizeof(dso->build_id)) > 0) {
413 dso->has_build_id = true;
414 return 0;
415 }
416
417 return -1;
418}
419
420static int dso__inject_build_id(struct dso *dso, struct perf_tool *tool,
421 struct machine *machine)
422{
423 u16 misc = PERF_RECORD_MISC_USER;
424 int err;
425
426 if (dso__read_build_id(dso) < 0) {
427 pr_debug("no build_id found for %s\n", dso->long_name);
428 return -1;
429 }
430
431 if (dso->kernel)
432 misc = PERF_RECORD_MISC_KERNEL;
433
434 err = perf_event__synthesize_build_id(tool, dso, misc, perf_event__repipe,
435 machine);
436 if (err) {
437 pr_err("Can't synthesize build_id event for %s\n", dso->long_name);
438 return -1;
439 }
440
441 return 0;
442}
443
444static int perf_event__inject_buildid(struct perf_tool *tool,
445 union perf_event *event,
446 struct perf_sample *sample,
447 struct evsel *evsel __maybe_unused,
448 struct machine *machine)
449{
450 struct addr_location al;
451 struct thread *thread;
452
453 thread = machine__findnew_thread(machine, sample->pid, sample->tid);
454 if (thread == NULL) {
455 pr_err("problem processing %d event, skipping it.\n",
456 event->header.type);
457 goto repipe;
458 }
459
460 if (thread__find_map(thread, sample->cpumode, sample->ip, &al)) {
461 if (!al.map->dso->hit) {
462 al.map->dso->hit = 1;
463 if (map__load(al.map) >= 0) {
464 dso__inject_build_id(al.map->dso, tool, machine);
465 /*
466 * If this fails, too bad, let the other side
467 * account this as unresolved.
468 */
469 } else {
470#ifdef HAVE_LIBELF_SUPPORT
471 pr_warning("no symbols found in %s, maybe "
472 "install a debug package?\n",
473 al.map->dso->long_name);
474#endif
475 }
476 }
477 }
478
479 thread__put(thread);
480repipe:
481 perf_event__repipe(tool, event, sample, machine);
482 return 0;
483}
484
485static int perf_inject__sched_process_exit(struct perf_tool *tool,
486 union perf_event *event __maybe_unused,
487 struct perf_sample *sample,
488 struct evsel *evsel __maybe_unused,
489 struct machine *machine __maybe_unused)
490{
491 struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
492 struct event_entry *ent;
493
494 list_for_each_entry(ent, &inject->samples, node) {
495 if (sample->tid == ent->tid) {
496 list_del_init(&ent->node);
497 free(ent);
498 break;
499 }
500 }
501
502 return 0;
503}
504
505static int perf_inject__sched_switch(struct perf_tool *tool,
506 union perf_event *event,
507 struct perf_sample *sample,
508 struct evsel *evsel,
509 struct machine *machine)
510{
511 struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
512 struct event_entry *ent;
513
514 perf_inject__sched_process_exit(tool, event, sample, evsel, machine);
515
516 ent = malloc(event->header.size + sizeof(struct event_entry));
517 if (ent == NULL) {
518 color_fprintf(stderr, PERF_COLOR_RED,
519 "Not enough memory to process sched switch event!");
520 return -1;
521 }
522
523 ent->tid = sample->tid;
524 memcpy(&ent->event, event, event->header.size);
525 list_add(&ent->node, &inject->samples);
526 return 0;
527}
528
529static int perf_inject__sched_stat(struct perf_tool *tool,
530 union perf_event *event __maybe_unused,
531 struct perf_sample *sample,
532 struct evsel *evsel,
533 struct machine *machine)
534{
535 struct event_entry *ent;
536 union perf_event *event_sw;
537 struct perf_sample sample_sw;
538 struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
539 u32 pid = evsel__intval(evsel, sample, "pid");
540
541 list_for_each_entry(ent, &inject->samples, node) {
542 if (pid == ent->tid)
543 goto found;
544 }
545
546 return 0;
547found:
548 event_sw = &ent->event[0];
549 evsel__parse_sample(evsel, event_sw, &sample_sw);
550
551 sample_sw.period = sample->period;
552 sample_sw.time = sample->time;
553 perf_event__synthesize_sample(event_sw, evsel->core.attr.sample_type,
554 evsel->core.attr.read_format, &sample_sw);
555 build_id__mark_dso_hit(tool, event_sw, &sample_sw, evsel, machine);
556 return perf_event__repipe(tool, event_sw, &sample_sw, machine);
557}
558
559static void sig_handler(int sig __maybe_unused)
560{
561 session_done = 1;
562}
563
564static int evsel__check_stype(struct evsel *evsel, u64 sample_type, const char *sample_msg)
565{
566 struct perf_event_attr *attr = &evsel->core.attr;
567 const char *name = evsel__name(evsel);
568
569 if (!(attr->sample_type & sample_type)) {
570 pr_err("Samples for %s event do not have %s attribute set.",
571 name, sample_msg);
572 return -EINVAL;
573 }
574
575 return 0;
576}
577
578static int drop_sample(struct perf_tool *tool __maybe_unused,
579 union perf_event *event __maybe_unused,
580 struct perf_sample *sample __maybe_unused,
581 struct evsel *evsel __maybe_unused,
582 struct machine *machine __maybe_unused)
583{
584 return 0;
585}
586
587static void strip_init(struct perf_inject *inject)
588{
589 struct evlist *evlist = inject->session->evlist;
590 struct evsel *evsel;
591
592 inject->tool.context_switch = perf_event__drop;
593
594 evlist__for_each_entry(evlist, evsel)
595 evsel->handler = drop_sample;
596}
597
598static int __cmd_inject(struct perf_inject *inject)
599{
600 int ret = -EINVAL;
601 struct perf_session *session = inject->session;
602 struct perf_data *data_out = &inject->output;
603 int fd = perf_data__fd(data_out);
604 u64 output_data_offset;
605
606 signal(SIGINT, sig_handler);
607
608 if (inject->build_ids || inject->sched_stat ||
609 inject->itrace_synth_opts.set) {
610 inject->tool.mmap = perf_event__repipe_mmap;
611 inject->tool.mmap2 = perf_event__repipe_mmap2;
612 inject->tool.fork = perf_event__repipe_fork;
613 inject->tool.tracing_data = perf_event__repipe_tracing_data;
614 }
615
616 output_data_offset = session->header.data_offset;
617
618 if (inject->build_ids) {
619 inject->tool.sample = perf_event__inject_buildid;
620 } else if (inject->sched_stat) {
621 struct evsel *evsel;
622
623 evlist__for_each_entry(session->evlist, evsel) {
624 const char *name = evsel__name(evsel);
625
626 if (!strcmp(name, "sched:sched_switch")) {
627 if (evsel__check_stype(evsel, PERF_SAMPLE_TID, "TID"))
628 return -EINVAL;
629
630 evsel->handler = perf_inject__sched_switch;
631 } else if (!strcmp(name, "sched:sched_process_exit"))
632 evsel->handler = perf_inject__sched_process_exit;
633 else if (!strncmp(name, "sched:sched_stat_", 17))
634 evsel->handler = perf_inject__sched_stat;
635 }
636 } else if (inject->itrace_synth_opts.set) {
637 session->itrace_synth_opts = &inject->itrace_synth_opts;
638 inject->itrace_synth_opts.inject = true;
639 inject->tool.comm = perf_event__repipe_comm;
640 inject->tool.namespaces = perf_event__repipe_namespaces;
641 inject->tool.exit = perf_event__repipe_exit;
642 inject->tool.id_index = perf_event__process_id_index;
643 inject->tool.auxtrace_info = perf_event__process_auxtrace_info;
644 inject->tool.auxtrace = perf_event__process_auxtrace;
645 inject->tool.aux = perf_event__drop_aux;
646 inject->tool.itrace_start = perf_event__drop_aux,
647 inject->tool.ordered_events = true;
648 inject->tool.ordering_requires_timestamps = true;
649 /* Allow space in the header for new attributes */
650 output_data_offset = 4096;
651 if (inject->strip)
652 strip_init(inject);
653 }
654
655 if (!inject->itrace_synth_opts.set)
656 auxtrace_index__free(&session->auxtrace_index);
657
658 if (!data_out->is_pipe)
659 lseek(fd, output_data_offset, SEEK_SET);
660
661 ret = perf_session__process_events(session);
662 if (ret)
663 return ret;
664
665 if (!data_out->is_pipe) {
666 if (inject->build_ids)
667 perf_header__set_feat(&session->header,
668 HEADER_BUILD_ID);
669 /*
670 * Keep all buildids when there is unprocessed AUX data because
671 * it is not known which ones the AUX trace hits.
672 */
673 if (perf_header__has_feat(&session->header, HEADER_BUILD_ID) &&
674 inject->have_auxtrace && !inject->itrace_synth_opts.set)
675 dsos__hit_all(session);
676 /*
677 * The AUX areas have been removed and replaced with
678 * synthesized hardware events, so clear the feature flag and
679 * remove the evsel.
680 */
681 if (inject->itrace_synth_opts.set) {
682 struct evsel *evsel;
683
684 perf_header__clear_feat(&session->header,
685 HEADER_AUXTRACE);
686 if (inject->itrace_synth_opts.last_branch ||
687 inject->itrace_synth_opts.add_last_branch)
688 perf_header__set_feat(&session->header,
689 HEADER_BRANCH_STACK);
690 evsel = perf_evlist__id2evsel_strict(session->evlist,
691 inject->aux_id);
692 if (evsel) {
693 pr_debug("Deleting %s\n", evsel__name(evsel));
694 evlist__remove(session->evlist, evsel);
695 evsel__delete(evsel);
696 }
697 }
698 session->header.data_offset = output_data_offset;
699 session->header.data_size = inject->bytes_written;
700 perf_session__write_header(session, session->evlist, fd, true);
701 }
702
703 return ret;
704}
705
706int cmd_inject(int argc, const char **argv)
707{
708 struct perf_inject inject = {
709 .tool = {
710 .sample = perf_event__repipe_sample,
711 .mmap = perf_event__repipe,
712 .mmap2 = perf_event__repipe,
713 .comm = perf_event__repipe,
714 .fork = perf_event__repipe,
715 .exit = perf_event__repipe,
716 .lost = perf_event__repipe,
717 .lost_samples = perf_event__repipe,
718 .aux = perf_event__repipe,
719 .itrace_start = perf_event__repipe,
720 .context_switch = perf_event__repipe,
721 .read = perf_event__repipe_sample,
722 .throttle = perf_event__repipe,
723 .unthrottle = perf_event__repipe,
724 .attr = perf_event__repipe_attr,
725 .tracing_data = perf_event__repipe_op2_synth,
726 .auxtrace_info = perf_event__repipe_op2_synth,
727 .auxtrace = perf_event__repipe_auxtrace,
728 .auxtrace_error = perf_event__repipe_op2_synth,
729 .time_conv = perf_event__repipe_op2_synth,
730 .finished_round = perf_event__repipe_oe_synth,
731 .build_id = perf_event__repipe_op2_synth,
732 .id_index = perf_event__repipe_op2_synth,
733 .feature = perf_event__repipe_op2_synth,
734 },
735 .input_name = "-",
736 .samples = LIST_HEAD_INIT(inject.samples),
737 .output = {
738 .path = "-",
739 .mode = PERF_DATA_MODE_WRITE,
740 },
741 };
742 struct perf_data data = {
743 .mode = PERF_DATA_MODE_READ,
744 };
745 int ret;
746
747 struct option options[] = {
748 OPT_BOOLEAN('b', "build-ids", &inject.build_ids,
749 "Inject build-ids into the output stream"),
750 OPT_STRING('i', "input", &inject.input_name, "file",
751 "input file name"),
752 OPT_STRING('o', "output", &inject.output.path, "file",
753 "output file name"),
754 OPT_BOOLEAN('s', "sched-stat", &inject.sched_stat,
755 "Merge sched-stat and sched-switch for getting events "
756 "where and how long tasks slept"),
757#ifdef HAVE_JITDUMP
758 OPT_BOOLEAN('j', "jit", &inject.jit_mode, "merge jitdump files into perf.data file"),
759#endif
760 OPT_INCR('v', "verbose", &verbose,
761 "be more verbose (show build ids, etc)"),
762 OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name, "file",
763 "kallsyms pathname"),
764 OPT_BOOLEAN('f', "force", &data.force, "don't complain, do it"),
765 OPT_CALLBACK_OPTARG(0, "itrace", &inject.itrace_synth_opts,
766 NULL, "opts", "Instruction Tracing options\n"
767 ITRACE_HELP,
768 itrace_parse_synth_opts),
769 OPT_BOOLEAN(0, "strip", &inject.strip,
770 "strip non-synthesized events (use with --itrace)"),
771 OPT_END()
772 };
773 const char * const inject_usage[] = {
774 "perf inject [<options>]",
775 NULL
776 };
777#ifndef HAVE_JITDUMP
778 set_option_nobuild(options, 'j', "jit", "NO_LIBELF=1", true);
779#endif
780 argc = parse_options(argc, argv, options, inject_usage, 0);
781
782 /*
783 * Any (unrecognized) arguments left?
784 */
785 if (argc)
786 usage_with_options(inject_usage, options);
787
788 if (inject.strip && !inject.itrace_synth_opts.set) {
789 pr_err("--strip option requires --itrace option\n");
790 return -1;
791 }
792
793 if (perf_data__open(&inject.output)) {
794 perror("failed to create output file");
795 return -1;
796 }
797
798 inject.tool.ordered_events = inject.sched_stat;
799
800 data.path = inject.input_name;
801 inject.session = perf_session__new(&data, true, &inject.tool);
802 if (IS_ERR(inject.session))
803 return PTR_ERR(inject.session);
804
805 if (zstd_init(&(inject.session->zstd_data), 0) < 0)
806 pr_warning("Decompression initialization failed.\n");
807
808 if (inject.build_ids) {
809 /*
810 * to make sure the mmap records are ordered correctly
811 * and so that the correct especially due to jitted code
812 * mmaps. We cannot generate the buildid hit list and
813 * inject the jit mmaps at the same time for now.
814 */
815 inject.tool.ordered_events = true;
816 inject.tool.ordering_requires_timestamps = true;
817 }
818#ifdef HAVE_JITDUMP
819 if (inject.jit_mode) {
820 inject.tool.mmap2 = perf_event__jit_repipe_mmap2;
821 inject.tool.mmap = perf_event__jit_repipe_mmap;
822 inject.tool.ordered_events = true;
823 inject.tool.ordering_requires_timestamps = true;
824 /*
825 * JIT MMAP injection injects all MMAP events in one go, so it
826 * does not obey finished_round semantics.
827 */
828 inject.tool.finished_round = perf_event__drop_oe;
829 }
830#endif
831 ret = symbol__init(&inject.session->header.env);
832 if (ret < 0)
833 goto out_delete;
834
835 ret = __cmd_inject(&inject);
836
837out_delete:
838 zstd_fini(&(inject.session->zstd_data));
839 perf_session__delete(inject.session);
840 return ret;
841}