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}