1 // SPDX-License-Identifier: GPL-2.0
5 * Builtin inject command: Examine the live mode (stdin) event stream
6 * and repipe it to stdout while optionally injecting additional
11 #include "util/color.h"
13 #include "util/vdso.h"
14 #include "util/evlist.h"
15 #include "util/evsel.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"
24 #include "util/symbol.h"
25 #include "util/synthetic-events.h"
26 #include "util/thread.h"
27 #include "util/namespaces.h"
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 */
33 #include <linux/list.h>
38 struct perf_tool tool;
39 struct perf_session *session;
46 const char *input_name;
47 struct perf_data output;
50 struct list_head samples;
51 struct itrace_synth_opts itrace_synth_opts;
52 char event_copy[PERF_SAMPLE_MAX_SIZE];
56 struct list_head node;
58 union perf_event event[];
61 static int dso__inject_build_id(struct dso *dso, struct perf_tool *tool,
62 struct machine *machine, u8 cpumode, u32 flags);
64 static int output_bytes(struct perf_inject *inject, void *buf, size_t sz)
68 size = perf_data__write(&inject->output, buf, sz);
72 inject->bytes_written += size;
76 static int perf_event__repipe_synth(struct perf_tool *tool,
77 union perf_event *event)
79 struct perf_inject *inject = container_of(tool, struct perf_inject,
82 return output_bytes(inject, event, event->header.size);
85 static int perf_event__repipe_oe_synth(struct perf_tool *tool,
86 union perf_event *event,
87 struct ordered_events *oe __maybe_unused)
89 return perf_event__repipe_synth(tool, event);
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)
101 static int perf_event__repipe_op2_synth(struct perf_session *session,
102 union perf_event *event)
104 return perf_event__repipe_synth(session->tool, event);
107 static int perf_event__repipe_op4_synth(struct perf_session *session,
108 union perf_event *event,
109 u64 data __maybe_unused)
111 return perf_event__repipe_synth(session->tool, event);
114 static int perf_event__repipe_attr(struct perf_tool *tool,
115 union perf_event *event,
116 struct evlist **pevlist)
118 struct perf_inject *inject = container_of(tool, struct perf_inject,
122 ret = perf_event__process_attr(tool, event, pevlist);
126 if (!inject->output.is_pipe)
129 return perf_event__repipe_synth(tool, event);
132 static int perf_event__repipe_event_update(struct perf_tool *tool,
133 union perf_event *event,
134 struct evlist **pevlist __maybe_unused)
136 return perf_event__repipe_synth(tool, event);
139 #ifdef HAVE_AUXTRACE_SUPPORT
141 static int copy_bytes(struct perf_inject *inject, int fd, off_t size)
148 ssz = read(fd, buf, min(size, (off_t)sizeof(buf)));
151 ret = output_bytes(inject, buf, ssz);
160 static s64 perf_event__repipe_auxtrace(struct perf_session *session,
161 union perf_event *event)
163 struct perf_tool *tool = session->tool;
164 struct perf_inject *inject = container_of(tool, struct perf_inject,
168 inject->have_auxtrace = true;
170 if (!inject->output.is_pipe) {
173 offset = lseek(inject->output.file.fd, 0, SEEK_CUR);
176 ret = auxtrace_index__auxtrace_event(&session->auxtrace_index,
182 if (perf_data__is_pipe(session->data) || !session->one_mmap) {
183 ret = output_bytes(inject, event, event->header.size);
186 ret = copy_bytes(inject, perf_data__fd(session->data),
187 event->auxtrace.size);
189 ret = output_bytes(inject, event,
190 event->header.size + event->auxtrace.size);
195 return event->auxtrace.size;
201 perf_event__repipe_auxtrace(struct perf_session *session __maybe_unused,
202 union perf_event *event __maybe_unused)
204 pr_err("AUX area tracing not supported\n");
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)
215 return perf_event__repipe_synth(tool, event);
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)
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)
231 struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
234 inject->aux_id = sample->id;
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)
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;
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))
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;
261 typedef int (*inject_handler)(struct perf_tool *tool,
262 union perf_event *event,
263 struct perf_sample *sample,
265 struct machine *machine);
267 static int perf_event__repipe_sample(struct perf_tool *tool,
268 union perf_event *event,
269 struct perf_sample *sample,
271 struct machine *machine)
273 struct perf_inject *inject = container_of(tool, struct perf_inject,
276 if (evsel && evsel->handler) {
277 inject_handler f = evsel->handler;
278 return f(tool, event, sample, evsel, machine);
281 build_id__mark_dso_hit(tool, event, sample, evsel, machine);
283 if (inject->itrace_synth_opts.set && sample->aux_sample.size)
284 event = perf_inject__cut_auxtrace_sample(inject, event, sample);
286 return perf_event__repipe_synth(tool, event);
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)
296 err = perf_event__process_mmap(tool, event, sample, machine);
297 perf_event__repipe(tool, event, sample, machine);
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)
308 struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
313 * if jit marker, then inject jit mmaps and generate ELF images
315 ret = jit_process(inject->session, &inject->output, machine,
316 event->mmap.filename, event->mmap.pid, &n);
320 inject->bytes_written += n;
323 return perf_event__repipe_mmap(tool, event, sample, machine);
327 static struct dso *findnew_dso(int pid, int tid, const char *filename,
328 struct dso_id *id, struct machine *machine)
330 struct thread *thread;
331 struct nsinfo *nsi = NULL;
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);
342 vdso = is_vdso_map(filename);
343 nsi = nsinfo__get(thread->nsinfo);
346 /* The vdso maps are always on the host and not the
347 * container. Ensure that we don't use setns to look
350 nnsi = nsinfo__copy(nsi);
353 nnsi->need_setns = false;
356 dso = machine__findnew_vdso(machine, thread);
358 dso = machine__findnew_dso_id(machine, filename, id);
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)
377 dso = findnew_dso(event->mmap.pid, event->mmap.tid,
378 event->mmap.filename, NULL, machine);
380 if (dso && !dso->hit) {
382 dso__inject_build_id(dso, tool, machine, sample->cpumode, 0);
386 return perf_event__repipe(tool, event, sample, machine);
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)
396 err = perf_event__process_mmap2(tool, event, sample, machine);
397 perf_event__repipe(tool, event, sample, machine);
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)
408 struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
413 * if jit marker, then inject jit mmaps and generate ELF images
415 ret = jit_process(inject->session, &inject->output, machine,
416 event->mmap2.filename, event->mmap2.pid, &n);
420 inject->bytes_written += n;
423 return perf_event__repipe_mmap2(tool, event, sample, machine);
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)
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,
440 dso = findnew_dso(event->mmap2.pid, event->mmap2.tid,
441 event->mmap2.filename, &dso_id, machine);
443 if (dso && !dso->hit) {
445 dso__inject_build_id(dso, tool, machine, sample->cpumode,
450 perf_event__repipe(tool, event, sample, machine);
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)
462 err = perf_event__process_fork(tool, event, sample, machine);
463 perf_event__repipe(tool, event, sample, machine);
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)
475 err = perf_event__process_comm(tool, event, sample, machine);
476 perf_event__repipe(tool, event, sample, machine);
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)
486 int err = perf_event__process_namespaces(tool, event, sample, machine);
488 perf_event__repipe(tool, event, sample, machine);
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)
500 err = perf_event__process_exit(tool, event, sample, machine);
501 perf_event__repipe(tool, event, sample, machine);
506 static int perf_event__repipe_tracing_data(struct perf_session *session,
507 union perf_event *event)
511 perf_event__repipe_synth(session->tool, event);
512 err = perf_event__process_tracing_data(session, event);
517 static int dso__read_build_id(struct dso *dso)
521 if (dso->has_build_id)
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);
529 return dso->has_build_id ? 0 : -1;
532 static int dso__inject_build_id(struct dso *dso, struct perf_tool *tool,
533 struct machine *machine, u8 cpumode, u32 flags)
537 if (is_anon_memory(dso->long_name) || flags & MAP_HUGETLB)
539 if (is_no_dso_memory(dso->long_name))
542 if (dso__read_build_id(dso) < 0) {
543 pr_debug("no build_id found for %s\n", dso->long_name);
547 err = perf_event__synthesize_build_id(tool, dso, cpumode,
548 perf_event__repipe, machine);
550 pr_err("Can't synthesize build_id event for %s\n", dso->long_name);
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)
562 struct addr_location al;
563 struct thread *thread;
565 thread = machine__findnew_thread(machine, sample->pid, sample->tid);
566 if (thread == NULL) {
567 pr_err("problem processing %d event, skipping it.\n",
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);
582 perf_event__repipe(tool, event, sample, machine);
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)
592 struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
593 struct event_entry *ent;
595 list_for_each_entry(ent, &inject->samples, node) {
596 if (sample->tid == ent->tid) {
597 list_del_init(&ent->node);
606 static int perf_inject__sched_switch(struct perf_tool *tool,
607 union perf_event *event,
608 struct perf_sample *sample,
610 struct machine *machine)
612 struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
613 struct event_entry *ent;
615 perf_inject__sched_process_exit(tool, event, sample, evsel, machine);
617 ent = malloc(event->header.size + sizeof(struct event_entry));
619 color_fprintf(stderr, PERF_COLOR_RED,
620 "Not enough memory to process sched switch event!");
624 ent->tid = sample->tid;
625 memcpy(&ent->event, event, event->header.size);
626 list_add(&ent->node, &inject->samples);
630 static int perf_inject__sched_stat(struct perf_tool *tool,
631 union perf_event *event __maybe_unused,
632 struct perf_sample *sample,
634 struct machine *machine)
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");
642 list_for_each_entry(ent, &inject->samples, node) {
649 event_sw = &ent->event[0];
650 evsel__parse_sample(evsel, event_sw, &sample_sw);
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);
660 static void sig_handler(int sig __maybe_unused)
665 static int evsel__check_stype(struct evsel *evsel, u64 sample_type, const char *sample_msg)
667 struct perf_event_attr *attr = &evsel->core.attr;
668 const char *name = evsel__name(evsel);
670 if (!(attr->sample_type & sample_type)) {
671 pr_err("Samples for %s event do not have %s attribute set.",
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)
688 static void strip_init(struct perf_inject *inject)
690 struct evlist *evlist = inject->session->evlist;
693 inject->tool.context_switch = perf_event__drop;
695 evlist__for_each_entry(evlist, evsel)
696 evsel->handler = drop_sample;
699 static int __cmd_inject(struct perf_inject *inject)
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;
707 signal(SIGINT, sig_handler);
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;
717 output_data_offset = session->header.data_offset;
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) {
727 evlist__for_each_entry(session->evlist, evsel) {
728 const char *name = evsel__name(evsel);
730 if (!strcmp(name, "sched:sched_switch")) {
731 if (evsel__check_stype(evsel, PERF_SAMPLE_TID, "TID"))
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;
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;
759 if (!inject->itrace_synth_opts.set)
760 auxtrace_index__free(&session->auxtrace_index);
762 if (!data_out->is_pipe)
763 lseek(fd, output_data_offset, SEEK_SET);
765 ret = perf_session__process_events(session);
769 if (!data_out->is_pipe) {
770 if (inject->build_ids)
771 perf_header__set_feat(&session->header,
774 * Keep all buildids when there is unprocessed AUX data because
775 * it is not known which ones the AUX trace hits.
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);
781 * The AUX areas have been removed and replaced with
782 * synthesized hardware events, so clear the feature flag.
784 if (inject->itrace_synth_opts.set) {
785 perf_header__clear_feat(&session->header,
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);
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);
800 int cmd_inject(int argc, const char **argv)
802 struct perf_inject inject = {
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,
842 .samples = LIST_HEAD_INIT(inject.samples),
845 .mode = PERF_DATA_MODE_WRITE,
849 struct perf_data data = {
850 .mode = PERF_DATA_MODE_READ,
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",
862 OPT_STRING('o', "output", &inject.output.path, "file",
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"),
868 OPT_BOOLEAN('j', "jit", &inject.jit_mode, "merge jitdump files into perf.data file"),
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"
878 itrace_parse_synth_opts),
879 OPT_BOOLEAN(0, "strip", &inject.strip,
880 "strip non-synthesized events (use with --itrace)"),
883 const char * const inject_usage[] = {
884 "perf inject [<options>]",
888 set_option_nobuild(options, 'j', "jit", "NO_LIBELF=1", true);
890 argc = parse_options(argc, argv, options, inject_usage, 0);
893 * Any (unrecognized) arguments left?
896 usage_with_options(inject_usage, options);
898 if (inject.strip && !inject.itrace_synth_opts.set) {
899 pr_err("--strip option requires --itrace option\n");
903 if (perf_data__open(&inject.output)) {
904 perror("failed to create output file");
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);
913 if (zstd_init(&(inject.session->zstd_data), 0) < 0)
914 pr_warning("Decompression initialization failed.\n");
916 if (inject.build_ids && !inject.build_id_all) {
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.
923 inject.tool.ordered_events = true;
924 inject.tool.ordering_requires_timestamps = true;
927 if (inject.sched_stat) {
928 inject.tool.ordered_events = true;
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;
938 * JIT MMAP injection injects all MMAP events in one go, so it
939 * does not obey finished_round semantics.
941 inject.tool.finished_round = perf_event__drop_oe;
944 ret = symbol__init(&inject.session->header.env);
948 ret = __cmd_inject(&inject);
951 zstd_fini(&(inject.session->zstd_data));
952 perf_session__delete(inject.session);