4 * Builtin inject command: Examine the live mode (stdin) event stream
5 * and repipe it to stdout while optionally injecting additional
11 #include "util/color.h"
12 #include "util/evlist.h"
13 #include "util/evsel.h"
14 #include "util/session.h"
15 #include "util/tool.h"
16 #include "util/debug.h"
17 #include "util/build-id.h"
18 #include "util/data.h"
19 #include "util/auxtrace.h"
21 #include "util/thread.h"
23 #include <subcmd/parse-options.h>
25 #include <linux/list.h>
30 struct perf_tool tool
;
31 struct perf_session
*session
;
37 const char *input_name
;
38 struct perf_data_file output
;
41 struct list_head samples
;
42 struct itrace_synth_opts itrace_synth_opts
;
46 struct list_head node
;
48 union perf_event event
[0];
51 static int output_bytes(struct perf_inject
*inject
, void *buf
, size_t sz
)
55 size
= perf_data_file__write(&inject
->output
, buf
, sz
);
59 inject
->bytes_written
+= size
;
63 static int perf_event__repipe_synth(struct perf_tool
*tool
,
64 union perf_event
*event
)
66 struct perf_inject
*inject
= container_of(tool
, struct perf_inject
,
69 return output_bytes(inject
, event
, event
->header
.size
);
72 static int perf_event__repipe_oe_synth(struct perf_tool
*tool
,
73 union perf_event
*event
,
74 struct ordered_events
*oe __maybe_unused
)
76 return perf_event__repipe_synth(tool
, event
);
80 static int perf_event__drop_oe(struct perf_tool
*tool __maybe_unused
,
81 union perf_event
*event __maybe_unused
,
82 struct ordered_events
*oe __maybe_unused
)
88 static int perf_event__repipe_op2_synth(struct perf_tool
*tool
,
89 union perf_event
*event
,
90 struct perf_session
*session
93 return perf_event__repipe_synth(tool
, event
);
96 static int perf_event__repipe_attr(struct perf_tool
*tool
,
97 union perf_event
*event
,
98 struct perf_evlist
**pevlist
)
100 struct perf_inject
*inject
= container_of(tool
, struct perf_inject
,
104 ret
= perf_event__process_attr(tool
, event
, pevlist
);
108 if (!inject
->output
.is_pipe
)
111 return perf_event__repipe_synth(tool
, event
);
114 #ifdef HAVE_AUXTRACE_SUPPORT
116 static int copy_bytes(struct perf_inject
*inject
, int fd
, off_t size
)
123 ssz
= read(fd
, buf
, min(size
, (off_t
)sizeof(buf
)));
126 ret
= output_bytes(inject
, buf
, ssz
);
135 static s64
perf_event__repipe_auxtrace(struct perf_tool
*tool
,
136 union perf_event
*event
,
137 struct perf_session
*session
)
139 struct perf_inject
*inject
= container_of(tool
, struct perf_inject
,
143 inject
->have_auxtrace
= true;
145 if (!inject
->output
.is_pipe
) {
148 offset
= lseek(inject
->output
.fd
, 0, SEEK_CUR
);
151 ret
= auxtrace_index__auxtrace_event(&session
->auxtrace_index
,
157 if (perf_data_file__is_pipe(session
->file
) || !session
->one_mmap
) {
158 ret
= output_bytes(inject
, event
, event
->header
.size
);
161 ret
= copy_bytes(inject
, perf_data_file__fd(session
->file
),
162 event
->auxtrace
.size
);
164 ret
= output_bytes(inject
, event
,
165 event
->header
.size
+ event
->auxtrace
.size
);
170 return event
->auxtrace
.size
;
176 perf_event__repipe_auxtrace(struct perf_tool
*tool __maybe_unused
,
177 union perf_event
*event __maybe_unused
,
178 struct perf_session
*session __maybe_unused
)
180 pr_err("AUX area tracing not supported\n");
186 static int perf_event__repipe(struct perf_tool
*tool
,
187 union perf_event
*event
,
188 struct perf_sample
*sample __maybe_unused
,
189 struct machine
*machine __maybe_unused
)
191 return perf_event__repipe_synth(tool
, event
);
194 static int perf_event__drop(struct perf_tool
*tool __maybe_unused
,
195 union perf_event
*event __maybe_unused
,
196 struct perf_sample
*sample __maybe_unused
,
197 struct machine
*machine __maybe_unused
)
202 static int perf_event__drop_aux(struct perf_tool
*tool
,
203 union perf_event
*event __maybe_unused
,
204 struct perf_sample
*sample
,
205 struct machine
*machine __maybe_unused
)
207 struct perf_inject
*inject
= container_of(tool
, struct perf_inject
, tool
);
210 inject
->aux_id
= sample
->id
;
215 typedef int (*inject_handler
)(struct perf_tool
*tool
,
216 union perf_event
*event
,
217 struct perf_sample
*sample
,
218 struct perf_evsel
*evsel
,
219 struct machine
*machine
);
221 static int perf_event__repipe_sample(struct perf_tool
*tool
,
222 union perf_event
*event
,
223 struct perf_sample
*sample
,
224 struct perf_evsel
*evsel
,
225 struct machine
*machine
)
227 if (evsel
->handler
) {
228 inject_handler f
= evsel
->handler
;
229 return f(tool
, event
, sample
, evsel
, machine
);
232 build_id__mark_dso_hit(tool
, event
, sample
, evsel
, machine
);
234 return perf_event__repipe_synth(tool
, event
);
237 static int perf_event__repipe_mmap(struct perf_tool
*tool
,
238 union perf_event
*event
,
239 struct perf_sample
*sample
,
240 struct machine
*machine
)
244 err
= perf_event__process_mmap(tool
, event
, sample
, machine
);
245 perf_event__repipe(tool
, event
, sample
, machine
);
251 static int perf_event__jit_repipe_mmap(struct perf_tool
*tool
,
252 union perf_event
*event
,
253 struct perf_sample
*sample
,
254 struct machine
*machine
)
256 struct perf_inject
*inject
= container_of(tool
, struct perf_inject
, tool
);
261 * if jit marker, then inject jit mmaps and generate ELF images
263 ret
= jit_process(inject
->session
, &inject
->output
, machine
,
264 event
->mmap
.filename
, sample
->pid
, &n
);
268 inject
->bytes_written
+= n
;
271 return perf_event__repipe_mmap(tool
, event
, sample
, machine
);
275 static int perf_event__repipe_mmap2(struct perf_tool
*tool
,
276 union perf_event
*event
,
277 struct perf_sample
*sample
,
278 struct machine
*machine
)
282 err
= perf_event__process_mmap2(tool
, event
, sample
, machine
);
283 perf_event__repipe(tool
, event
, sample
, machine
);
289 static int perf_event__jit_repipe_mmap2(struct perf_tool
*tool
,
290 union perf_event
*event
,
291 struct perf_sample
*sample
,
292 struct machine
*machine
)
294 struct perf_inject
*inject
= container_of(tool
, struct perf_inject
, tool
);
299 * if jit marker, then inject jit mmaps and generate ELF images
301 ret
= jit_process(inject
->session
, &inject
->output
, machine
,
302 event
->mmap2
.filename
, sample
->pid
, &n
);
306 inject
->bytes_written
+= n
;
309 return perf_event__repipe_mmap2(tool
, event
, sample
, machine
);
313 static int perf_event__repipe_fork(struct perf_tool
*tool
,
314 union perf_event
*event
,
315 struct perf_sample
*sample
,
316 struct machine
*machine
)
320 err
= perf_event__process_fork(tool
, event
, sample
, machine
);
321 perf_event__repipe(tool
, event
, sample
, machine
);
326 static int perf_event__repipe_comm(struct perf_tool
*tool
,
327 union perf_event
*event
,
328 struct perf_sample
*sample
,
329 struct machine
*machine
)
333 err
= perf_event__process_comm(tool
, event
, sample
, machine
);
334 perf_event__repipe(tool
, event
, sample
, machine
);
339 static int perf_event__repipe_namespaces(struct perf_tool
*tool
,
340 union perf_event
*event
,
341 struct perf_sample
*sample
,
342 struct machine
*machine
)
344 int err
= perf_event__process_namespaces(tool
, event
, sample
, machine
);
346 perf_event__repipe(tool
, event
, sample
, machine
);
351 static int perf_event__repipe_exit(struct perf_tool
*tool
,
352 union perf_event
*event
,
353 struct perf_sample
*sample
,
354 struct machine
*machine
)
358 err
= perf_event__process_exit(tool
, event
, sample
, machine
);
359 perf_event__repipe(tool
, event
, sample
, machine
);
364 static int perf_event__repipe_tracing_data(struct perf_tool
*tool
,
365 union perf_event
*event
,
366 struct perf_session
*session
)
370 perf_event__repipe_synth(tool
, event
);
371 err
= perf_event__process_tracing_data(tool
, event
, session
);
376 static int perf_event__repipe_id_index(struct perf_tool
*tool
,
377 union perf_event
*event
,
378 struct perf_session
*session
)
382 perf_event__repipe_synth(tool
, event
);
383 err
= perf_event__process_id_index(tool
, event
, session
);
388 static int dso__read_build_id(struct dso
*dso
)
390 if (dso
->has_build_id
)
393 if (filename__read_build_id(dso
->long_name
, dso
->build_id
,
394 sizeof(dso
->build_id
)) > 0) {
395 dso
->has_build_id
= true;
402 static int dso__inject_build_id(struct dso
*dso
, struct perf_tool
*tool
,
403 struct machine
*machine
)
405 u16 misc
= PERF_RECORD_MISC_USER
;
408 if (dso__read_build_id(dso
) < 0) {
409 pr_debug("no build_id found for %s\n", dso
->long_name
);
414 misc
= PERF_RECORD_MISC_KERNEL
;
416 err
= perf_event__synthesize_build_id(tool
, dso
, misc
, perf_event__repipe
,
419 pr_err("Can't synthesize build_id event for %s\n", dso
->long_name
);
426 static int perf_event__inject_buildid(struct perf_tool
*tool
,
427 union perf_event
*event
,
428 struct perf_sample
*sample
,
429 struct perf_evsel
*evsel __maybe_unused
,
430 struct machine
*machine
)
432 struct addr_location al
;
433 struct thread
*thread
;
435 thread
= machine__findnew_thread(machine
, sample
->pid
, sample
->tid
);
436 if (thread
== NULL
) {
437 pr_err("problem processing %d event, skipping it.\n",
442 thread__find_addr_map(thread
, sample
->cpumode
, MAP__FUNCTION
, sample
->ip
, &al
);
444 if (al
.map
!= NULL
) {
445 if (!al
.map
->dso
->hit
) {
446 al
.map
->dso
->hit
= 1;
447 if (map__load(al
.map
) >= 0) {
448 dso__inject_build_id(al
.map
->dso
, tool
, machine
);
450 * If this fails, too bad, let the other side
451 * account this as unresolved.
454 #ifdef HAVE_LIBELF_SUPPORT
455 pr_warning("no symbols found in %s, maybe "
456 "install a debug package?\n",
457 al
.map
->dso
->long_name
);
465 perf_event__repipe(tool
, event
, sample
, machine
);
469 static int perf_inject__sched_process_exit(struct perf_tool
*tool
,
470 union perf_event
*event __maybe_unused
,
471 struct perf_sample
*sample
,
472 struct perf_evsel
*evsel __maybe_unused
,
473 struct machine
*machine __maybe_unused
)
475 struct perf_inject
*inject
= container_of(tool
, struct perf_inject
, tool
);
476 struct event_entry
*ent
;
478 list_for_each_entry(ent
, &inject
->samples
, node
) {
479 if (sample
->tid
== ent
->tid
) {
480 list_del_init(&ent
->node
);
489 static int perf_inject__sched_switch(struct perf_tool
*tool
,
490 union perf_event
*event
,
491 struct perf_sample
*sample
,
492 struct perf_evsel
*evsel
,
493 struct machine
*machine
)
495 struct perf_inject
*inject
= container_of(tool
, struct perf_inject
, tool
);
496 struct event_entry
*ent
;
498 perf_inject__sched_process_exit(tool
, event
, sample
, evsel
, machine
);
500 ent
= malloc(event
->header
.size
+ sizeof(struct event_entry
));
502 color_fprintf(stderr
, PERF_COLOR_RED
,
503 "Not enough memory to process sched switch event!");
507 ent
->tid
= sample
->tid
;
508 memcpy(&ent
->event
, event
, event
->header
.size
);
509 list_add(&ent
->node
, &inject
->samples
);
513 static int perf_inject__sched_stat(struct perf_tool
*tool
,
514 union perf_event
*event __maybe_unused
,
515 struct perf_sample
*sample
,
516 struct perf_evsel
*evsel
,
517 struct machine
*machine
)
519 struct event_entry
*ent
;
520 union perf_event
*event_sw
;
521 struct perf_sample sample_sw
;
522 struct perf_inject
*inject
= container_of(tool
, struct perf_inject
, tool
);
523 u32 pid
= perf_evsel__intval(evsel
, sample
, "pid");
525 list_for_each_entry(ent
, &inject
->samples
, node
) {
532 event_sw
= &ent
->event
[0];
533 perf_evsel__parse_sample(evsel
, event_sw
, &sample_sw
);
535 sample_sw
.period
= sample
->period
;
536 sample_sw
.time
= sample
->time
;
537 perf_event__synthesize_sample(event_sw
, evsel
->attr
.sample_type
,
538 evsel
->attr
.read_format
, &sample_sw
,
540 build_id__mark_dso_hit(tool
, event_sw
, &sample_sw
, evsel
, machine
);
541 return perf_event__repipe(tool
, event_sw
, &sample_sw
, machine
);
544 static void sig_handler(int sig __maybe_unused
)
549 static int perf_evsel__check_stype(struct perf_evsel
*evsel
,
550 u64 sample_type
, const char *sample_msg
)
552 struct perf_event_attr
*attr
= &evsel
->attr
;
553 const char *name
= perf_evsel__name(evsel
);
555 if (!(attr
->sample_type
& sample_type
)) {
556 pr_err("Samples for %s event do not have %s attribute set.",
564 static int drop_sample(struct perf_tool
*tool __maybe_unused
,
565 union perf_event
*event __maybe_unused
,
566 struct perf_sample
*sample __maybe_unused
,
567 struct perf_evsel
*evsel __maybe_unused
,
568 struct machine
*machine __maybe_unused
)
573 static void strip_init(struct perf_inject
*inject
)
575 struct perf_evlist
*evlist
= inject
->session
->evlist
;
576 struct perf_evsel
*evsel
;
578 inject
->tool
.context_switch
= perf_event__drop
;
580 evlist__for_each_entry(evlist
, evsel
)
581 evsel
->handler
= drop_sample
;
584 static bool has_tracking(struct perf_evsel
*evsel
)
586 return evsel
->attr
.mmap
|| evsel
->attr
.mmap2
|| evsel
->attr
.comm
||
590 #define COMPAT_MASK (PERF_SAMPLE_ID | PERF_SAMPLE_TID | PERF_SAMPLE_TIME | \
591 PERF_SAMPLE_ID | PERF_SAMPLE_CPU | PERF_SAMPLE_IDENTIFIER)
594 * In order that the perf.data file is parsable, tracking events like MMAP need
595 * their selected event to exist, except if there is only 1 selected event left
596 * and it has a compatible sample type.
598 static bool ok_to_remove(struct perf_evlist
*evlist
,
599 struct perf_evsel
*evsel_to_remove
)
601 struct perf_evsel
*evsel
;
605 if (!has_tracking(evsel_to_remove
))
608 evlist__for_each_entry(evlist
, evsel
) {
609 if (evsel
->handler
!= drop_sample
) {
611 if ((evsel
->attr
.sample_type
& COMPAT_MASK
) ==
612 (evsel_to_remove
->attr
.sample_type
& COMPAT_MASK
))
617 return ok
&& cnt
== 1;
620 static void strip_fini(struct perf_inject
*inject
)
622 struct perf_evlist
*evlist
= inject
->session
->evlist
;
623 struct perf_evsel
*evsel
, *tmp
;
625 /* Remove non-synthesized evsels if possible */
626 evlist__for_each_entry_safe(evlist
, tmp
, evsel
) {
627 if (evsel
->handler
== drop_sample
&&
628 ok_to_remove(evlist
, evsel
)) {
629 pr_debug("Deleting %s\n", perf_evsel__name(evsel
));
630 perf_evlist__remove(evlist
, evsel
);
631 perf_evsel__delete(evsel
);
636 static int __cmd_inject(struct perf_inject
*inject
)
639 struct perf_session
*session
= inject
->session
;
640 struct perf_data_file
*file_out
= &inject
->output
;
641 int fd
= perf_data_file__fd(file_out
);
642 u64 output_data_offset
;
644 signal(SIGINT
, sig_handler
);
646 if (inject
->build_ids
|| inject
->sched_stat
||
647 inject
->itrace_synth_opts
.set
) {
648 inject
->tool
.mmap
= perf_event__repipe_mmap
;
649 inject
->tool
.mmap2
= perf_event__repipe_mmap2
;
650 inject
->tool
.fork
= perf_event__repipe_fork
;
651 inject
->tool
.tracing_data
= perf_event__repipe_tracing_data
;
654 output_data_offset
= session
->header
.data_offset
;
656 if (inject
->build_ids
) {
657 inject
->tool
.sample
= perf_event__inject_buildid
;
658 } else if (inject
->sched_stat
) {
659 struct perf_evsel
*evsel
;
661 evlist__for_each_entry(session
->evlist
, evsel
) {
662 const char *name
= perf_evsel__name(evsel
);
664 if (!strcmp(name
, "sched:sched_switch")) {
665 if (perf_evsel__check_stype(evsel
, PERF_SAMPLE_TID
, "TID"))
668 evsel
->handler
= perf_inject__sched_switch
;
669 } else if (!strcmp(name
, "sched:sched_process_exit"))
670 evsel
->handler
= perf_inject__sched_process_exit
;
671 else if (!strncmp(name
, "sched:sched_stat_", 17))
672 evsel
->handler
= perf_inject__sched_stat
;
674 } else if (inject
->itrace_synth_opts
.set
) {
675 session
->itrace_synth_opts
= &inject
->itrace_synth_opts
;
676 inject
->itrace_synth_opts
.inject
= true;
677 inject
->tool
.comm
= perf_event__repipe_comm
;
678 inject
->tool
.namespaces
= perf_event__repipe_namespaces
;
679 inject
->tool
.exit
= perf_event__repipe_exit
;
680 inject
->tool
.id_index
= perf_event__repipe_id_index
;
681 inject
->tool
.auxtrace_info
= perf_event__process_auxtrace_info
;
682 inject
->tool
.auxtrace
= perf_event__process_auxtrace
;
683 inject
->tool
.aux
= perf_event__drop_aux
;
684 inject
->tool
.itrace_start
= perf_event__drop_aux
,
685 inject
->tool
.ordered_events
= true;
686 inject
->tool
.ordering_requires_timestamps
= true;
687 /* Allow space in the header for new attributes */
688 output_data_offset
= 4096;
693 if (!inject
->itrace_synth_opts
.set
)
694 auxtrace_index__free(&session
->auxtrace_index
);
696 if (!file_out
->is_pipe
)
697 lseek(fd
, output_data_offset
, SEEK_SET
);
699 ret
= perf_session__process_events(session
);
703 if (!file_out
->is_pipe
) {
704 if (inject
->build_ids
)
705 perf_header__set_feat(&session
->header
,
708 * Keep all buildids when there is unprocessed AUX data because
709 * it is not known which ones the AUX trace hits.
711 if (perf_header__has_feat(&session
->header
, HEADER_BUILD_ID
) &&
712 inject
->have_auxtrace
&& !inject
->itrace_synth_opts
.set
)
713 dsos__hit_all(session
);
715 * The AUX areas have been removed and replaced with
716 * synthesized hardware events, so clear the feature flag and
719 if (inject
->itrace_synth_opts
.set
) {
720 struct perf_evsel
*evsel
;
722 perf_header__clear_feat(&session
->header
,
724 if (inject
->itrace_synth_opts
.last_branch
)
725 perf_header__set_feat(&session
->header
,
726 HEADER_BRANCH_STACK
);
727 evsel
= perf_evlist__id2evsel_strict(session
->evlist
,
730 pr_debug("Deleting %s\n",
731 perf_evsel__name(evsel
));
732 perf_evlist__remove(session
->evlist
, evsel
);
733 perf_evsel__delete(evsel
);
738 session
->header
.data_offset
= output_data_offset
;
739 session
->header
.data_size
= inject
->bytes_written
;
740 perf_session__write_header(session
, session
->evlist
, fd
, true);
746 int cmd_inject(int argc
, const char **argv
)
748 struct perf_inject inject
= {
750 .sample
= perf_event__repipe_sample
,
751 .mmap
= perf_event__repipe
,
752 .mmap2
= perf_event__repipe
,
753 .comm
= perf_event__repipe
,
754 .fork
= perf_event__repipe
,
755 .exit
= perf_event__repipe
,
756 .lost
= perf_event__repipe
,
757 .lost_samples
= perf_event__repipe
,
758 .aux
= perf_event__repipe
,
759 .itrace_start
= perf_event__repipe
,
760 .context_switch
= perf_event__repipe
,
761 .read
= perf_event__repipe_sample
,
762 .throttle
= perf_event__repipe
,
763 .unthrottle
= perf_event__repipe
,
764 .attr
= perf_event__repipe_attr
,
765 .tracing_data
= perf_event__repipe_op2_synth
,
766 .auxtrace_info
= perf_event__repipe_op2_synth
,
767 .auxtrace
= perf_event__repipe_auxtrace
,
768 .auxtrace_error
= perf_event__repipe_op2_synth
,
769 .time_conv
= perf_event__repipe_op2_synth
,
770 .finished_round
= perf_event__repipe_oe_synth
,
771 .build_id
= perf_event__repipe_op2_synth
,
772 .id_index
= perf_event__repipe_op2_synth
,
775 .samples
= LIST_HEAD_INIT(inject
.samples
),
778 .mode
= PERF_DATA_MODE_WRITE
,
781 struct perf_data_file file
= {
782 .mode
= PERF_DATA_MODE_READ
,
786 struct option options
[] = {
787 OPT_BOOLEAN('b', "build-ids", &inject
.build_ids
,
788 "Inject build-ids into the output stream"),
789 OPT_STRING('i', "input", &inject
.input_name
, "file",
791 OPT_STRING('o', "output", &inject
.output
.path
, "file",
793 OPT_BOOLEAN('s', "sched-stat", &inject
.sched_stat
,
794 "Merge sched-stat and sched-switch for getting events "
795 "where and how long tasks slept"),
797 OPT_BOOLEAN('j', "jit", &inject
.jit_mode
, "merge jitdump files into perf.data file"),
799 OPT_INCR('v', "verbose", &verbose
,
800 "be more verbose (show build ids, etc)"),
801 OPT_STRING(0, "kallsyms", &symbol_conf
.kallsyms_name
, "file",
802 "kallsyms pathname"),
803 OPT_BOOLEAN('f', "force", &file
.force
, "don't complain, do it"),
804 OPT_CALLBACK_OPTARG(0, "itrace", &inject
.itrace_synth_opts
,
805 NULL
, "opts", "Instruction Tracing options",
806 itrace_parse_synth_opts
),
807 OPT_BOOLEAN(0, "strip", &inject
.strip
,
808 "strip non-synthesized events (use with --itrace)"),
811 const char * const inject_usage
[] = {
812 "perf inject [<options>]",
816 set_option_nobuild(options
, 'j', "jit", "NO_LIBELF=1", true);
818 argc
= parse_options(argc
, argv
, options
, inject_usage
, 0);
821 * Any (unrecognized) arguments left?
824 usage_with_options(inject_usage
, options
);
826 if (inject
.strip
&& !inject
.itrace_synth_opts
.set
) {
827 pr_err("--strip option requires --itrace option\n");
831 if (perf_data_file__open(&inject
.output
)) {
832 perror("failed to create output file");
836 inject
.tool
.ordered_events
= inject
.sched_stat
;
838 file
.path
= inject
.input_name
;
839 inject
.session
= perf_session__new(&file
, true, &inject
.tool
);
840 if (inject
.session
== NULL
)
843 if (inject
.build_ids
) {
845 * to make sure the mmap records are ordered correctly
846 * and so that the correct especially due to jitted code
847 * mmaps. We cannot generate the buildid hit list and
848 * inject the jit mmaps at the same time for now.
850 inject
.tool
.ordered_events
= true;
851 inject
.tool
.ordering_requires_timestamps
= true;
854 if (inject
.jit_mode
) {
855 inject
.tool
.mmap2
= perf_event__jit_repipe_mmap2
;
856 inject
.tool
.mmap
= perf_event__jit_repipe_mmap
;
857 inject
.tool
.ordered_events
= true;
858 inject
.tool
.ordering_requires_timestamps
= true;
860 * JIT MMAP injection injects all MMAP events in one go, so it
861 * does not obey finished_round semantics.
863 inject
.tool
.finished_round
= perf_event__drop_oe
;
866 ret
= symbol__init(&inject
.session
->header
.env
);
870 ret
= __cmd_inject(&inject
);
873 perf_session__delete(inject
.session
);