1 // SPDX-License-Identifier: GPL-2.0
2 #include <errno.h>
3 #include <inttypes.h>
4 #include <linux/err.h>
5 #include <linux/kernel.h>
6 #include <linux/zalloc.h>
7 #include <api/fs/fs.h>
8
9 #include <byteswap.h>
10 #include <unistd.h>
11 #include <sys/types.h>
12 #include <sys/mman.h>
13 #include <perf/cpumap.h>
14
15 #include "map_symbol.h"
16 #include "branch.h"
17 #include "debug.h"
18 #include "evlist.h"
19 #include "evsel.h"
20 #include "memswap.h"
21 #include "map.h"
22 #include "symbol.h"
23 #include "session.h"
24 #include "tool.h"
25 #include "perf_regs.h"
26 #include "asm/bug.h"
27 #include "auxtrace.h"
28 #include "thread.h"
29 #include "thread-stack.h"
30 #include "sample-raw.h"
31 #include "stat.h"
32 #include "tsc.h"
33 #include "ui/progress.h"
34 #include "../perf.h"
35 #include "arch/common.h"
36 #include "units.h"
37 #include <internal/lib.h>
38
39 #ifdef HAVE_ZSTD_SUPPORT
perf_session__process_compressed_event(struct perf_session * session,union perf_event * event,u64 file_offset)40 static int perf_session__process_compressed_event(struct perf_session *session,
41 union perf_event *event, u64 file_offset)
42 {
43 void *src;
44 size_t decomp_size, src_size;
45 u64 decomp_last_rem = 0;
46 size_t mmap_len, decomp_len = session->header.env.comp_mmap_len;
47 struct decomp *decomp, *decomp_last = session->decomp_last;
48
49 if (decomp_last) {
50 decomp_last_rem = decomp_last->size - decomp_last->head;
51 decomp_len += decomp_last_rem;
52 }
53
54 mmap_len = sizeof(struct decomp) + decomp_len;
55 decomp = mmap(NULL, mmap_len, PROT_READ|PROT_WRITE,
56 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
57 if (decomp == MAP_FAILED) {
58 pr_err("Couldn't allocate memory for decompression\n");
59 return -1;
60 }
61
62 decomp->file_pos = file_offset;
63 decomp->mmap_len = mmap_len;
64 decomp->head = 0;
65
66 if (decomp_last_rem) {
67 memcpy(decomp->data, &(decomp_last->data[decomp_last->head]), decomp_last_rem);
68 decomp->size = decomp_last_rem;
69 }
70
71 src = (void *)event + sizeof(struct perf_record_compressed);
72 src_size = event->pack.header.size - sizeof(struct perf_record_compressed);
73
74 decomp_size = zstd_decompress_stream(&(session->zstd_data), src, src_size,
75 &(decomp->data[decomp_last_rem]), decomp_len - decomp_last_rem);
76 if (!decomp_size) {
77 munmap(decomp, mmap_len);
78 pr_err("Couldn't decompress data\n");
79 return -1;
80 }
81
82 decomp->size += decomp_size;
83
84 if (session->decomp == NULL) {
85 session->decomp = decomp;
86 session->decomp_last = decomp;
87 } else {
88 session->decomp_last->next = decomp;
89 session->decomp_last = decomp;
90 }
91
92 pr_debug("decomp (B): %zd to %zd\n", src_size, decomp_size);
93
94 return 0;
95 }
96 #else /* !HAVE_ZSTD_SUPPORT */
97 #define perf_session__process_compressed_event perf_session__process_compressed_event_stub
98 #endif
99
100 static int perf_session__deliver_event(struct perf_session *session,
101 union perf_event *event,
102 struct perf_tool *tool,
103 u64 file_offset);
104
perf_session__open(struct perf_session * session)105 static int perf_session__open(struct perf_session *session)
106 {
107 struct perf_data *data = session->data;
108
109 if (perf_session__read_header(session) < 0) {
110 pr_err("incompatible file format (rerun with -v to learn more)\n");
111 return -1;
112 }
113
114 if (perf_data__is_pipe(data))
115 return 0;
116
117 if (perf_header__has_feat(&session->header, HEADER_STAT))
118 return 0;
119
120 if (!evlist__valid_sample_type(session->evlist)) {
121 pr_err("non matching sample_type\n");
122 return -1;
123 }
124
125 if (!evlist__valid_sample_id_all(session->evlist)) {
126 pr_err("non matching sample_id_all\n");
127 return -1;
128 }
129
130 if (!evlist__valid_read_format(session->evlist)) {
131 pr_err("non matching read_format\n");
132 return -1;
133 }
134
135 return 0;
136 }
137
perf_session__set_id_hdr_size(struct perf_session * session)138 void perf_session__set_id_hdr_size(struct perf_session *session)
139 {
140 u16 id_hdr_size = evlist__id_hdr_size(session->evlist);
141
142 machines__set_id_hdr_size(&session->machines, id_hdr_size);
143 }
144
perf_session__create_kernel_maps(struct perf_session * session)145 int perf_session__create_kernel_maps(struct perf_session *session)
146 {
147 int ret = machine__create_kernel_maps(&session->machines.host);
148
149 if (ret >= 0)
150 ret = machines__create_guest_kernel_maps(&session->machines);
151 return ret;
152 }
153
perf_session__destroy_kernel_maps(struct perf_session * session)154 static void perf_session__destroy_kernel_maps(struct perf_session *session)
155 {
156 machines__destroy_kernel_maps(&session->machines);
157 }
158
perf_session__has_comm_exec(struct perf_session * session)159 static bool perf_session__has_comm_exec(struct perf_session *session)
160 {
161 struct evsel *evsel;
162
163 evlist__for_each_entry(session->evlist, evsel) {
164 if (evsel->core.attr.comm_exec)
165 return true;
166 }
167
168 return false;
169 }
170
perf_session__set_comm_exec(struct perf_session * session)171 static void perf_session__set_comm_exec(struct perf_session *session)
172 {
173 bool comm_exec = perf_session__has_comm_exec(session);
174
175 machines__set_comm_exec(&session->machines, comm_exec);
176 }
177
ordered_events__deliver_event(struct ordered_events * oe,struct ordered_event * event)178 static int ordered_events__deliver_event(struct ordered_events *oe,
179 struct ordered_event *event)
180 {
181 struct perf_session *session = container_of(oe, struct perf_session,
182 ordered_events);
183
184 return perf_session__deliver_event(session, event->event,
185 session->tool, event->file_offset);
186 }
187
perf_session__new(struct perf_data * data,bool repipe,struct perf_tool * tool)188 struct perf_session *perf_session__new(struct perf_data *data,
189 bool repipe, struct perf_tool *tool)
190 {
191 int ret = -ENOMEM;
192 struct perf_session *session = zalloc(sizeof(*session));
193
194 if (!session)
195 goto out;
196
197 session->repipe = repipe;
198 session->tool = tool;
199 INIT_LIST_HEAD(&session->auxtrace_index);
200 machines__init(&session->machines);
201 ordered_events__init(&session->ordered_events,
202 ordered_events__deliver_event, NULL);
203
204 perf_env__init(&session->header.env);
205 if (data) {
206 ret = perf_data__open(data);
207 if (ret < 0)
208 goto out_delete;
209
210 session->data = data;
211
212 if (perf_data__is_read(data)) {
213 ret = perf_session__open(session);
214 if (ret < 0)
215 goto out_delete;
216
217 /*
218 * set session attributes that are present in perf.data
219 * but not in pipe-mode.
220 */
221 if (!data->is_pipe) {
222 perf_session__set_id_hdr_size(session);
223 perf_session__set_comm_exec(session);
224 }
225
226 evlist__init_trace_event_sample_raw(session->evlist);
227
228 /* Open the directory data. */
229 if (data->is_dir) {
230 ret = perf_data__open_dir(data);
231 if (ret)
232 goto out_delete;
233 }
234
235 if (!symbol_conf.kallsyms_name &&
236 !symbol_conf.vmlinux_name)
237 symbol_conf.kallsyms_name = perf_data__kallsyms_name(data);
238 }
239 } else {
240 session->machines.host.env = &perf_env;
241 }
242
243 session->machines.host.single_address_space =
244 perf_env__single_address_space(session->machines.host.env);
245
246 if (!data || perf_data__is_write(data)) {
247 /*
248 * In O_RDONLY mode this will be performed when reading the
249 * kernel MMAP event, in perf_event__process_mmap().
250 */
251 if (perf_session__create_kernel_maps(session) < 0)
252 pr_warning("Cannot read kernel map\n");
253 }
254
255 /*
256 * In pipe-mode, evlist is empty until PERF_RECORD_HEADER_ATTR is
257 * processed, so evlist__sample_id_all is not meaningful here.
258 */
259 if ((!data || !data->is_pipe) && tool && tool->ordering_requires_timestamps &&
260 tool->ordered_events && !evlist__sample_id_all(session->evlist)) {
261 dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n");
262 tool->ordered_events = false;
263 }
264
265 return session;
266
267 out_delete:
268 perf_session__delete(session);
269 out:
270 return ERR_PTR(ret);
271 }
272
perf_session__delete_threads(struct perf_session * session)273 static void perf_session__delete_threads(struct perf_session *session)
274 {
275 machine__delete_threads(&session->machines.host);
276 }
277
perf_session__release_decomp_events(struct perf_session * session)278 static void perf_session__release_decomp_events(struct perf_session *session)
279 {
280 struct decomp *next, *decomp;
281 size_t mmap_len;
282 next = session->decomp;
283 do {
284 decomp = next;
285 if (decomp == NULL)
286 break;
287 next = decomp->next;
288 mmap_len = decomp->mmap_len;
289 munmap(decomp, mmap_len);
290 } while (1);
291 }
292
perf_session__delete(struct perf_session * session)293 void perf_session__delete(struct perf_session *session)
294 {
295 if (session == NULL)
296 return;
297 auxtrace__free(session);
298 auxtrace_index__free(&session->auxtrace_index);
299 perf_session__destroy_kernel_maps(session);
300 perf_session__delete_threads(session);
301 perf_session__release_decomp_events(session);
302 perf_env__exit(&session->header.env);
303 machines__exit(&session->machines);
304 if (session->data)
305 perf_data__close(session->data);
306 free(session);
307 }
308
process_event_synth_tracing_data_stub(struct perf_session * session __maybe_unused,union perf_event * event __maybe_unused)309 static int process_event_synth_tracing_data_stub(struct perf_session *session
310 __maybe_unused,
311 union perf_event *event
312 __maybe_unused)
313 {
314 dump_printf(": unhandled!\n");
315 return 0;
316 }
317
process_event_synth_attr_stub(struct perf_tool * tool __maybe_unused,union perf_event * event __maybe_unused,struct evlist ** pevlist __maybe_unused)318 static int process_event_synth_attr_stub(struct perf_tool *tool __maybe_unused,
319 union perf_event *event __maybe_unused,
320 struct evlist **pevlist
321 __maybe_unused)
322 {
323 dump_printf(": unhandled!\n");
324 return 0;
325 }
326
process_event_synth_event_update_stub(struct perf_tool * tool __maybe_unused,union perf_event * event __maybe_unused,struct evlist ** pevlist __maybe_unused)327 static int process_event_synth_event_update_stub(struct perf_tool *tool __maybe_unused,
328 union perf_event *event __maybe_unused,
329 struct evlist **pevlist
330 __maybe_unused)
331 {
332 if (dump_trace)
333 perf_event__fprintf_event_update(event, stdout);
334
335 dump_printf(": unhandled!\n");
336 return 0;
337 }
338
process_event_sample_stub(struct perf_tool * tool __maybe_unused,union perf_event * event __maybe_unused,struct perf_sample * sample __maybe_unused,struct evsel * evsel __maybe_unused,struct machine * machine __maybe_unused)339 static int process_event_sample_stub(struct perf_tool *tool __maybe_unused,
340 union perf_event *event __maybe_unused,
341 struct perf_sample *sample __maybe_unused,
342 struct evsel *evsel __maybe_unused,
343 struct machine *machine __maybe_unused)
344 {
345 dump_printf(": unhandled!\n");
346 return 0;
347 }
348
process_event_stub(struct perf_tool * tool __maybe_unused,union perf_event * event __maybe_unused,struct perf_sample * sample __maybe_unused,struct machine * machine __maybe_unused)349 static int process_event_stub(struct perf_tool *tool __maybe_unused,
350 union perf_event *event __maybe_unused,
351 struct perf_sample *sample __maybe_unused,
352 struct machine *machine __maybe_unused)
353 {
354 dump_printf(": unhandled!\n");
355 return 0;
356 }
357
process_finished_round_stub(struct perf_tool * tool __maybe_unused,union perf_event * event __maybe_unused,struct ordered_events * oe __maybe_unused)358 static int process_finished_round_stub(struct perf_tool *tool __maybe_unused,
359 union perf_event *event __maybe_unused,
360 struct ordered_events *oe __maybe_unused)
361 {
362 dump_printf(": unhandled!\n");
363 return 0;
364 }
365
366 static int process_finished_round(struct perf_tool *tool,
367 union perf_event *event,
368 struct ordered_events *oe);
369
skipn(int fd,off_t n)370 static int skipn(int fd, off_t n)
371 {
372 char buf[4096];
373 ssize_t ret;
374
375 while (n > 0) {
376 ret = read(fd, buf, min(n, (off_t)sizeof(buf)));
377 if (ret <= 0)
378 return ret;
379 n -= ret;
380 }
381
382 return 0;
383 }
384
process_event_auxtrace_stub(struct perf_session * session __maybe_unused,union perf_event * event)385 static s64 process_event_auxtrace_stub(struct perf_session *session __maybe_unused,
386 union perf_event *event)
387 {
388 dump_printf(": unhandled!\n");
389 if (perf_data__is_pipe(session->data))
390 skipn(perf_data__fd(session->data), event->auxtrace.size);
391 return event->auxtrace.size;
392 }
393
process_event_op2_stub(struct perf_session * session __maybe_unused,union perf_event * event __maybe_unused)394 static int process_event_op2_stub(struct perf_session *session __maybe_unused,
395 union perf_event *event __maybe_unused)
396 {
397 dump_printf(": unhandled!\n");
398 return 0;
399 }
400
401
402 static
process_event_thread_map_stub(struct perf_session * session __maybe_unused,union perf_event * event __maybe_unused)403 int process_event_thread_map_stub(struct perf_session *session __maybe_unused,
404 union perf_event *event __maybe_unused)
405 {
406 if (dump_trace)
407 perf_event__fprintf_thread_map(event, stdout);
408
409 dump_printf(": unhandled!\n");
410 return 0;
411 }
412
413 static
process_event_cpu_map_stub(struct perf_session * session __maybe_unused,union perf_event * event __maybe_unused)414 int process_event_cpu_map_stub(struct perf_session *session __maybe_unused,
415 union perf_event *event __maybe_unused)
416 {
417 if (dump_trace)
418 perf_event__fprintf_cpu_map(event, stdout);
419
420 dump_printf(": unhandled!\n");
421 return 0;
422 }
423
424 static
process_event_stat_config_stub(struct perf_session * session __maybe_unused,union perf_event * event __maybe_unused)425 int process_event_stat_config_stub(struct perf_session *session __maybe_unused,
426 union perf_event *event __maybe_unused)
427 {
428 if (dump_trace)
429 perf_event__fprintf_stat_config(event, stdout);
430
431 dump_printf(": unhandled!\n");
432 return 0;
433 }
434
process_stat_stub(struct perf_session * perf_session __maybe_unused,union perf_event * event)435 static int process_stat_stub(struct perf_session *perf_session __maybe_unused,
436 union perf_event *event)
437 {
438 if (dump_trace)
439 perf_event__fprintf_stat(event, stdout);
440
441 dump_printf(": unhandled!\n");
442 return 0;
443 }
444
process_stat_round_stub(struct perf_session * perf_session __maybe_unused,union perf_event * event)445 static int process_stat_round_stub(struct perf_session *perf_session __maybe_unused,
446 union perf_event *event)
447 {
448 if (dump_trace)
449 perf_event__fprintf_stat_round(event, stdout);
450
451 dump_printf(": unhandled!\n");
452 return 0;
453 }
454
process_event_time_conv_stub(struct perf_session * perf_session __maybe_unused,union perf_event * event)455 static int process_event_time_conv_stub(struct perf_session *perf_session __maybe_unused,
456 union perf_event *event)
457 {
458 if (dump_trace)
459 perf_event__fprintf_time_conv(event, stdout);
460
461 dump_printf(": unhandled!\n");
462 return 0;
463 }
464
perf_session__process_compressed_event_stub(struct perf_session * session __maybe_unused,union perf_event * event __maybe_unused,u64 file_offset __maybe_unused)465 static int perf_session__process_compressed_event_stub(struct perf_session *session __maybe_unused,
466 union perf_event *event __maybe_unused,
467 u64 file_offset __maybe_unused)
468 {
469 dump_printf(": unhandled!\n");
470 return 0;
471 }
472
perf_tool__fill_defaults(struct perf_tool * tool)473 void perf_tool__fill_defaults(struct perf_tool *tool)
474 {
475 if (tool->sample == NULL)
476 tool->sample = process_event_sample_stub;
477 if (tool->mmap == NULL)
478 tool->mmap = process_event_stub;
479 if (tool->mmap2 == NULL)
480 tool->mmap2 = process_event_stub;
481 if (tool->comm == NULL)
482 tool->comm = process_event_stub;
483 if (tool->namespaces == NULL)
484 tool->namespaces = process_event_stub;
485 if (tool->cgroup == NULL)
486 tool->cgroup = process_event_stub;
487 if (tool->fork == NULL)
488 tool->fork = process_event_stub;
489 if (tool->exit == NULL)
490 tool->exit = process_event_stub;
491 if (tool->lost == NULL)
492 tool->lost = perf_event__process_lost;
493 if (tool->lost_samples == NULL)
494 tool->lost_samples = perf_event__process_lost_samples;
495 if (tool->aux == NULL)
496 tool->aux = perf_event__process_aux;
497 if (tool->itrace_start == NULL)
498 tool->itrace_start = perf_event__process_itrace_start;
499 if (tool->context_switch == NULL)
500 tool->context_switch = perf_event__process_switch;
501 if (tool->ksymbol == NULL)
502 tool->ksymbol = perf_event__process_ksymbol;
503 if (tool->bpf == NULL)
504 tool->bpf = perf_event__process_bpf;
505 if (tool->text_poke == NULL)
506 tool->text_poke = perf_event__process_text_poke;
507 if (tool->read == NULL)
508 tool->read = process_event_sample_stub;
509 if (tool->throttle == NULL)
510 tool->throttle = process_event_stub;
511 if (tool->unthrottle == NULL)
512 tool->unthrottle = process_event_stub;
513 if (tool->attr == NULL)
514 tool->attr = process_event_synth_attr_stub;
515 if (tool->event_update == NULL)
516 tool->event_update = process_event_synth_event_update_stub;
517 if (tool->tracing_data == NULL)
518 tool->tracing_data = process_event_synth_tracing_data_stub;
519 if (tool->build_id == NULL)
520 tool->build_id = process_event_op2_stub;
521 if (tool->finished_round == NULL) {
522 if (tool->ordered_events)
523 tool->finished_round = process_finished_round;
524 else
525 tool->finished_round = process_finished_round_stub;
526 }
527 if (tool->id_index == NULL)
528 tool->id_index = process_event_op2_stub;
529 if (tool->auxtrace_info == NULL)
530 tool->auxtrace_info = process_event_op2_stub;
531 if (tool->auxtrace == NULL)
532 tool->auxtrace = process_event_auxtrace_stub;
533 if (tool->auxtrace_error == NULL)
534 tool->auxtrace_error = process_event_op2_stub;
535 if (tool->thread_map == NULL)
536 tool->thread_map = process_event_thread_map_stub;
537 if (tool->cpu_map == NULL)
538 tool->cpu_map = process_event_cpu_map_stub;
539 if (tool->stat_config == NULL)
540 tool->stat_config = process_event_stat_config_stub;
541 if (tool->stat == NULL)
542 tool->stat = process_stat_stub;
543 if (tool->stat_round == NULL)
544 tool->stat_round = process_stat_round_stub;
545 if (tool->time_conv == NULL)
546 tool->time_conv = process_event_time_conv_stub;
547 if (tool->feature == NULL)
548 tool->feature = process_event_op2_stub;
549 if (tool->compressed == NULL)
550 tool->compressed = perf_session__process_compressed_event;
551 }
552
swap_sample_id_all(union perf_event * event,void * data)553 static void swap_sample_id_all(union perf_event *event, void *data)
554 {
555 void *end = (void *) event + event->header.size;
556 int size = end - data;
557
558 BUG_ON(size % sizeof(u64));
559 mem_bswap_64(data, size);
560 }
561
perf_event__all64_swap(union perf_event * event,bool sample_id_all __maybe_unused)562 static void perf_event__all64_swap(union perf_event *event,
563 bool sample_id_all __maybe_unused)
564 {
565 struct perf_event_header *hdr = &event->header;
566 mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr));
567 }
568
perf_event__comm_swap(union perf_event * event,bool sample_id_all)569 static void perf_event__comm_swap(union perf_event *event, bool sample_id_all)
570 {
571 event->comm.pid = bswap_32(event->comm.pid);
572 event->comm.tid = bswap_32(event->comm.tid);
573
574 if (sample_id_all) {
575 void *data = &event->comm.comm;
576
577 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
578 swap_sample_id_all(event, data);
579 }
580 }
581
perf_event__mmap_swap(union perf_event * event,bool sample_id_all)582 static void perf_event__mmap_swap(union perf_event *event,
583 bool sample_id_all)
584 {
585 event->mmap.pid = bswap_32(event->mmap.pid);
586 event->mmap.tid = bswap_32(event->mmap.tid);
587 event->mmap.start = bswap_64(event->mmap.start);
588 event->mmap.len = bswap_64(event->mmap.len);
589 event->mmap.pgoff = bswap_64(event->mmap.pgoff);
590
591 if (sample_id_all) {
592 void *data = &event->mmap.filename;
593
594 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
595 swap_sample_id_all(event, data);
596 }
597 }
598
perf_event__mmap2_swap(union perf_event * event,bool sample_id_all)599 static void perf_event__mmap2_swap(union perf_event *event,
600 bool sample_id_all)
601 {
602 event->mmap2.pid = bswap_32(event->mmap2.pid);
603 event->mmap2.tid = bswap_32(event->mmap2.tid);
604 event->mmap2.start = bswap_64(event->mmap2.start);
605 event->mmap2.len = bswap_64(event->mmap2.len);
606 event->mmap2.pgoff = bswap_64(event->mmap2.pgoff);
607
608 if (!(event->header.misc & PERF_RECORD_MISC_MMAP_BUILD_ID)) {
609 event->mmap2.maj = bswap_32(event->mmap2.maj);
610 event->mmap2.min = bswap_32(event->mmap2.min);
611 event->mmap2.ino = bswap_64(event->mmap2.ino);
612 event->mmap2.ino_generation = bswap_64(event->mmap2.ino_generation);
613 }
614
615 if (sample_id_all) {
616 void *data = &event->mmap2.filename;
617
618 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
619 swap_sample_id_all(event, data);
620 }
621 }
perf_event__task_swap(union perf_event * event,bool sample_id_all)622 static void perf_event__task_swap(union perf_event *event, bool sample_id_all)
623 {
624 event->fork.pid = bswap_32(event->fork.pid);
625 event->fork.tid = bswap_32(event->fork.tid);
626 event->fork.ppid = bswap_32(event->fork.ppid);
627 event->fork.ptid = bswap_32(event->fork.ptid);
628 event->fork.time = bswap_64(event->fork.time);
629
630 if (sample_id_all)
631 swap_sample_id_all(event, &event->fork + 1);
632 }
633
perf_event__read_swap(union perf_event * event,bool sample_id_all)634 static void perf_event__read_swap(union perf_event *event, bool sample_id_all)
635 {
636 event->read.pid = bswap_32(event->read.pid);
637 event->read.tid = bswap_32(event->read.tid);
638 event->read.value = bswap_64(event->read.value);
639 event->read.time_enabled = bswap_64(event->read.time_enabled);
640 event->read.time_running = bswap_64(event->read.time_running);
641 event->read.id = bswap_64(event->read.id);
642
643 if (sample_id_all)
644 swap_sample_id_all(event, &event->read + 1);
645 }
646
perf_event__aux_swap(union perf_event * event,bool sample_id_all)647 static void perf_event__aux_swap(union perf_event *event, bool sample_id_all)
648 {
649 event->aux.aux_offset = bswap_64(event->aux.aux_offset);
650 event->aux.aux_size = bswap_64(event->aux.aux_size);
651 event->aux.flags = bswap_64(event->aux.flags);
652
653 if (sample_id_all)
654 swap_sample_id_all(event, &event->aux + 1);
655 }
656
perf_event__itrace_start_swap(union perf_event * event,bool sample_id_all)657 static void perf_event__itrace_start_swap(union perf_event *event,
658 bool sample_id_all)
659 {
660 event->itrace_start.pid = bswap_32(event->itrace_start.pid);
661 event->itrace_start.tid = bswap_32(event->itrace_start.tid);
662
663 if (sample_id_all)
664 swap_sample_id_all(event, &event->itrace_start + 1);
665 }
666
perf_event__switch_swap(union perf_event * event,bool sample_id_all)667 static void perf_event__switch_swap(union perf_event *event, bool sample_id_all)
668 {
669 if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE) {
670 event->context_switch.next_prev_pid =
671 bswap_32(event->context_switch.next_prev_pid);
672 event->context_switch.next_prev_tid =
673 bswap_32(event->context_switch.next_prev_tid);
674 }
675
676 if (sample_id_all)
677 swap_sample_id_all(event, &event->context_switch + 1);
678 }
679
perf_event__text_poke_swap(union perf_event * event,bool sample_id_all)680 static void perf_event__text_poke_swap(union perf_event *event, bool sample_id_all)
681 {
682 event->text_poke.addr = bswap_64(event->text_poke.addr);
683 event->text_poke.old_len = bswap_16(event->text_poke.old_len);
684 event->text_poke.new_len = bswap_16(event->text_poke.new_len);
685
686 if (sample_id_all) {
687 size_t len = sizeof(event->text_poke.old_len) +
688 sizeof(event->text_poke.new_len) +
689 event->text_poke.old_len +
690 event->text_poke.new_len;
691 void *data = &event->text_poke.old_len;
692
693 data += PERF_ALIGN(len, sizeof(u64));
694 swap_sample_id_all(event, data);
695 }
696 }
697
perf_event__throttle_swap(union perf_event * event,bool sample_id_all)698 static void perf_event__throttle_swap(union perf_event *event,
699 bool sample_id_all)
700 {
701 event->throttle.time = bswap_64(event->throttle.time);
702 event->throttle.id = bswap_64(event->throttle.id);
703 event->throttle.stream_id = bswap_64(event->throttle.stream_id);
704
705 if (sample_id_all)
706 swap_sample_id_all(event, &event->throttle + 1);
707 }
708
perf_event__namespaces_swap(union perf_event * event,bool sample_id_all)709 static void perf_event__namespaces_swap(union perf_event *event,
710 bool sample_id_all)
711 {
712 u64 i;
713
714 event->namespaces.pid = bswap_32(event->namespaces.pid);
715 event->namespaces.tid = bswap_32(event->namespaces.tid);
716 event->namespaces.nr_namespaces = bswap_64(event->namespaces.nr_namespaces);
717
718 for (i = 0; i < event->namespaces.nr_namespaces; i++) {
719 struct perf_ns_link_info *ns = &event->namespaces.link_info[i];
720
721 ns->dev = bswap_64(ns->dev);
722 ns->ino = bswap_64(ns->ino);
723 }
724
725 if (sample_id_all)
726 swap_sample_id_all(event, &event->namespaces.link_info[i]);
727 }
728
perf_event__cgroup_swap(union perf_event * event,bool sample_id_all)729 static void perf_event__cgroup_swap(union perf_event *event, bool sample_id_all)
730 {
731 event->cgroup.id = bswap_64(event->cgroup.id);
732
733 if (sample_id_all) {
734 void *data = &event->cgroup.path;
735
736 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
737 swap_sample_id_all(event, data);
738 }
739 }
740
revbyte(u8 b)741 static u8 revbyte(u8 b)
742 {
743 int rev = (b >> 4) | ((b & 0xf) << 4);
744 rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2);
745 rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1);
746 return (u8) rev;
747 }
748
749 /*
750 * XXX this is hack in attempt to carry flags bitfield
751 * through endian village. ABI says:
752 *
753 * Bit-fields are allocated from right to left (least to most significant)
754 * on little-endian implementations and from left to right (most to least
755 * significant) on big-endian implementations.
756 *
757 * The above seems to be byte specific, so we need to reverse each
758 * byte of the bitfield. 'Internet' also says this might be implementation
759 * specific and we probably need proper fix and carry perf_event_attr
760 * bitfield flags in separate data file FEAT_ section. Thought this seems
761 * to work for now.
762 */
swap_bitfield(u8 * p,unsigned len)763 static void swap_bitfield(u8 *p, unsigned len)
764 {
765 unsigned i;
766
767 for (i = 0; i < len; i++) {
768 *p = revbyte(*p);
769 p++;
770 }
771 }
772
773 /* exported for swapping attributes in file header */
perf_event__attr_swap(struct perf_event_attr * attr)774 void perf_event__attr_swap(struct perf_event_attr *attr)
775 {
776 attr->type = bswap_32(attr->type);
777 attr->size = bswap_32(attr->size);
778
779 #define bswap_safe(f, n) \
780 (attr->size > (offsetof(struct perf_event_attr, f) + \
781 sizeof(attr->f) * (n)))
782 #define bswap_field(f, sz) \
783 do { \
784 if (bswap_safe(f, 0)) \
785 attr->f = bswap_##sz(attr->f); \
786 } while(0)
787 #define bswap_field_16(f) bswap_field(f, 16)
788 #define bswap_field_32(f) bswap_field(f, 32)
789 #define bswap_field_64(f) bswap_field(f, 64)
790
791 bswap_field_64(config);
792 bswap_field_64(sample_period);
793 bswap_field_64(sample_type);
794 bswap_field_64(read_format);
795 bswap_field_32(wakeup_events);
796 bswap_field_32(bp_type);
797 bswap_field_64(bp_addr);
798 bswap_field_64(bp_len);
799 bswap_field_64(branch_sample_type);
800 bswap_field_64(sample_regs_user);
801 bswap_field_32(sample_stack_user);
802 bswap_field_32(aux_watermark);
803 bswap_field_16(sample_max_stack);
804 bswap_field_32(aux_sample_size);
805
806 /*
807 * After read_format are bitfields. Check read_format because
808 * we are unable to use offsetof on bitfield.
809 */
810 if (bswap_safe(read_format, 1))
811 swap_bitfield((u8 *) (&attr->read_format + 1),
812 sizeof(u64));
813 #undef bswap_field_64
814 #undef bswap_field_32
815 #undef bswap_field
816 #undef bswap_safe
817 }
818
perf_event__hdr_attr_swap(union perf_event * event,bool sample_id_all __maybe_unused)819 static void perf_event__hdr_attr_swap(union perf_event *event,
820 bool sample_id_all __maybe_unused)
821 {
822 size_t size;
823
824 perf_event__attr_swap(&event->attr.attr);
825
826 size = event->header.size;
827 size -= (void *)&event->attr.id - (void *)event;
828 mem_bswap_64(event->attr.id, size);
829 }
830
perf_event__event_update_swap(union perf_event * event,bool sample_id_all __maybe_unused)831 static void perf_event__event_update_swap(union perf_event *event,
832 bool sample_id_all __maybe_unused)
833 {
834 event->event_update.type = bswap_64(event->event_update.type);
835 event->event_update.id = bswap_64(event->event_update.id);
836 }
837
perf_event__event_type_swap(union perf_event * event,bool sample_id_all __maybe_unused)838 static void perf_event__event_type_swap(union perf_event *event,
839 bool sample_id_all __maybe_unused)
840 {
841 event->event_type.event_type.event_id =
842 bswap_64(event->event_type.event_type.event_id);
843 }
844
perf_event__tracing_data_swap(union perf_event * event,bool sample_id_all __maybe_unused)845 static void perf_event__tracing_data_swap(union perf_event *event,
846 bool sample_id_all __maybe_unused)
847 {
848 event->tracing_data.size = bswap_32(event->tracing_data.size);
849 }
850
perf_event__auxtrace_info_swap(union perf_event * event,bool sample_id_all __maybe_unused)851 static void perf_event__auxtrace_info_swap(union perf_event *event,
852 bool sample_id_all __maybe_unused)
853 {
854 size_t size;
855
856 event->auxtrace_info.type = bswap_32(event->auxtrace_info.type);
857
858 size = event->header.size;
859 size -= (void *)&event->auxtrace_info.priv - (void *)event;
860 mem_bswap_64(event->auxtrace_info.priv, size);
861 }
862
perf_event__auxtrace_swap(union perf_event * event,bool sample_id_all __maybe_unused)863 static void perf_event__auxtrace_swap(union perf_event *event,
864 bool sample_id_all __maybe_unused)
865 {
866 event->auxtrace.size = bswap_64(event->auxtrace.size);
867 event->auxtrace.offset = bswap_64(event->auxtrace.offset);
868 event->auxtrace.reference = bswap_64(event->auxtrace.reference);
869 event->auxtrace.idx = bswap_32(event->auxtrace.idx);
870 event->auxtrace.tid = bswap_32(event->auxtrace.tid);
871 event->auxtrace.cpu = bswap_32(event->auxtrace.cpu);
872 }
873
perf_event__auxtrace_error_swap(union perf_event * event,bool sample_id_all __maybe_unused)874 static void perf_event__auxtrace_error_swap(union perf_event *event,
875 bool sample_id_all __maybe_unused)
876 {
877 event->auxtrace_error.type = bswap_32(event->auxtrace_error.type);
878 event->auxtrace_error.code = bswap_32(event->auxtrace_error.code);
879 event->auxtrace_error.cpu = bswap_32(event->auxtrace_error.cpu);
880 event->auxtrace_error.pid = bswap_32(event->auxtrace_error.pid);
881 event->auxtrace_error.tid = bswap_32(event->auxtrace_error.tid);
882 event->auxtrace_error.fmt = bswap_32(event->auxtrace_error.fmt);
883 event->auxtrace_error.ip = bswap_64(event->auxtrace_error.ip);
884 if (event->auxtrace_error.fmt)
885 event->auxtrace_error.time = bswap_64(event->auxtrace_error.time);
886 }
887
perf_event__thread_map_swap(union perf_event * event,bool sample_id_all __maybe_unused)888 static void perf_event__thread_map_swap(union perf_event *event,
889 bool sample_id_all __maybe_unused)
890 {
891 unsigned i;
892
893 event->thread_map.nr = bswap_64(event->thread_map.nr);
894
895 for (i = 0; i < event->thread_map.nr; i++)
896 event->thread_map.entries[i].pid = bswap_64(event->thread_map.entries[i].pid);
897 }
898
perf_event__cpu_map_swap(union perf_event * event,bool sample_id_all __maybe_unused)899 static void perf_event__cpu_map_swap(union perf_event *event,
900 bool sample_id_all __maybe_unused)
901 {
902 struct perf_record_cpu_map_data *data = &event->cpu_map.data;
903 struct cpu_map_entries *cpus;
904 struct perf_record_record_cpu_map *mask;
905 unsigned i;
906
907 data->type = bswap_16(data->type);
908
909 switch (data->type) {
910 case PERF_CPU_MAP__CPUS:
911 cpus = (struct cpu_map_entries *)data->data;
912
913 cpus->nr = bswap_16(cpus->nr);
914
915 for (i = 0; i < cpus->nr; i++)
916 cpus->cpu[i] = bswap_16(cpus->cpu[i]);
917 break;
918 case PERF_CPU_MAP__MASK:
919 mask = (struct perf_record_record_cpu_map *)data->data;
920
921 mask->nr = bswap_16(mask->nr);
922 mask->long_size = bswap_16(mask->long_size);
923
924 switch (mask->long_size) {
925 case 4: mem_bswap_32(&mask->mask, mask->nr); break;
926 case 8: mem_bswap_64(&mask->mask, mask->nr); break;
927 default:
928 pr_err("cpu_map swap: unsupported long size\n");
929 }
930 default:
931 break;
932 }
933 }
934
perf_event__stat_config_swap(union perf_event * event,bool sample_id_all __maybe_unused)935 static void perf_event__stat_config_swap(union perf_event *event,
936 bool sample_id_all __maybe_unused)
937 {
938 u64 size;
939
940 size = bswap_64(event->stat_config.nr) * sizeof(event->stat_config.data[0]);
941 size += 1; /* nr item itself */
942 mem_bswap_64(&event->stat_config.nr, size);
943 }
944
perf_event__stat_swap(union perf_event * event,bool sample_id_all __maybe_unused)945 static void perf_event__stat_swap(union perf_event *event,
946 bool sample_id_all __maybe_unused)
947 {
948 event->stat.id = bswap_64(event->stat.id);
949 event->stat.thread = bswap_32(event->stat.thread);
950 event->stat.cpu = bswap_32(event->stat.cpu);
951 event->stat.val = bswap_64(event->stat.val);
952 event->stat.ena = bswap_64(event->stat.ena);
953 event->stat.run = bswap_64(event->stat.run);
954 }
955
perf_event__stat_round_swap(union perf_event * event,bool sample_id_all __maybe_unused)956 static void perf_event__stat_round_swap(union perf_event *event,
957 bool sample_id_all __maybe_unused)
958 {
959 event->stat_round.type = bswap_64(event->stat_round.type);
960 event->stat_round.time = bswap_64(event->stat_round.time);
961 }
962
perf_event__time_conv_swap(union perf_event * event,bool sample_id_all __maybe_unused)963 static void perf_event__time_conv_swap(union perf_event *event,
964 bool sample_id_all __maybe_unused)
965 {
966 event->time_conv.time_shift = bswap_64(event->time_conv.time_shift);
967 event->time_conv.time_mult = bswap_64(event->time_conv.time_mult);
968 event->time_conv.time_zero = bswap_64(event->time_conv.time_zero);
969
970 if (event_contains(event->time_conv, time_cycles)) {
971 event->time_conv.time_cycles = bswap_64(event->time_conv.time_cycles);
972 event->time_conv.time_mask = bswap_64(event->time_conv.time_mask);
973 }
974 }
975
976 typedef void (*perf_event__swap_op)(union perf_event *event,
977 bool sample_id_all);
978
979 static perf_event__swap_op perf_event__swap_ops[] = {
980 [PERF_RECORD_MMAP] = perf_event__mmap_swap,
981 [PERF_RECORD_MMAP2] = perf_event__mmap2_swap,
982 [PERF_RECORD_COMM] = perf_event__comm_swap,
983 [PERF_RECORD_FORK] = perf_event__task_swap,
984 [PERF_RECORD_EXIT] = perf_event__task_swap,
985 [PERF_RECORD_LOST] = perf_event__all64_swap,
986 [PERF_RECORD_READ] = perf_event__read_swap,
987 [PERF_RECORD_THROTTLE] = perf_event__throttle_swap,
988 [PERF_RECORD_UNTHROTTLE] = perf_event__throttle_swap,
989 [PERF_RECORD_SAMPLE] = perf_event__all64_swap,
990 [PERF_RECORD_AUX] = perf_event__aux_swap,
991 [PERF_RECORD_ITRACE_START] = perf_event__itrace_start_swap,
992 [PERF_RECORD_LOST_SAMPLES] = perf_event__all64_swap,
993 [PERF_RECORD_SWITCH] = perf_event__switch_swap,
994 [PERF_RECORD_SWITCH_CPU_WIDE] = perf_event__switch_swap,
995 [PERF_RECORD_NAMESPACES] = perf_event__namespaces_swap,
996 [PERF_RECORD_CGROUP] = perf_event__cgroup_swap,
997 [PERF_RECORD_TEXT_POKE] = perf_event__text_poke_swap,
998 [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap,
999 [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap,
1000 [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap,
1001 [PERF_RECORD_HEADER_BUILD_ID] = NULL,
1002 [PERF_RECORD_ID_INDEX] = perf_event__all64_swap,
1003 [PERF_RECORD_AUXTRACE_INFO] = perf_event__auxtrace_info_swap,
1004 [PERF_RECORD_AUXTRACE] = perf_event__auxtrace_swap,
1005 [PERF_RECORD_AUXTRACE_ERROR] = perf_event__auxtrace_error_swap,
1006 [PERF_RECORD_THREAD_MAP] = perf_event__thread_map_swap,
1007 [PERF_RECORD_CPU_MAP] = perf_event__cpu_map_swap,
1008 [PERF_RECORD_STAT_CONFIG] = perf_event__stat_config_swap,
1009 [PERF_RECORD_STAT] = perf_event__stat_swap,
1010 [PERF_RECORD_STAT_ROUND] = perf_event__stat_round_swap,
1011 [PERF_RECORD_EVENT_UPDATE] = perf_event__event_update_swap,
1012 [PERF_RECORD_TIME_CONV] = perf_event__time_conv_swap,
1013 [PERF_RECORD_HEADER_MAX] = NULL,
1014 };
1015
1016 /*
1017 * When perf record finishes a pass on every buffers, it records this pseudo
1018 * event.
1019 * We record the max timestamp t found in the pass n.
1020 * Assuming these timestamps are monotonic across cpus, we know that if
1021 * a buffer still has events with timestamps below t, they will be all
1022 * available and then read in the pass n + 1.
1023 * Hence when we start to read the pass n + 2, we can safely flush every
1024 * events with timestamps below t.
1025 *
1026 * ============ PASS n =================
1027 * CPU 0 | CPU 1
1028 * |
1029 * cnt1 timestamps | cnt2 timestamps
1030 * 1 | 2
1031 * 2 | 3
1032 * - | 4 <--- max recorded
1033 *
1034 * ============ PASS n + 1 ==============
1035 * CPU 0 | CPU 1
1036 * |
1037 * cnt1 timestamps | cnt2 timestamps
1038 * 3 | 5
1039 * 4 | 6
1040 * 5 | 7 <---- max recorded
1041 *
1042 * Flush every events below timestamp 4
1043 *
1044 * ============ PASS n + 2 ==============
1045 * CPU 0 | CPU 1
1046 * |
1047 * cnt1 timestamps | cnt2 timestamps
1048 * 6 | 8
1049 * 7 | 9
1050 * - | 10
1051 *
1052 * Flush every events below timestamp 7
1053 * etc...
1054 */
process_finished_round(struct perf_tool * tool __maybe_unused,union perf_event * event __maybe_unused,struct ordered_events * oe)1055 static int process_finished_round(struct perf_tool *tool __maybe_unused,
1056 union perf_event *event __maybe_unused,
1057 struct ordered_events *oe)
1058 {
1059 if (dump_trace)
1060 fprintf(stdout, "\n");
1061 return ordered_events__flush(oe, OE_FLUSH__ROUND);
1062 }
1063
perf_session__queue_event(struct perf_session * s,union perf_event * event,u64 timestamp,u64 file_offset)1064 int perf_session__queue_event(struct perf_session *s, union perf_event *event,
1065 u64 timestamp, u64 file_offset)
1066 {
1067 return ordered_events__queue(&s->ordered_events, event, timestamp, file_offset);
1068 }
1069
callchain__lbr_callstack_printf(struct perf_sample * sample)1070 static void callchain__lbr_callstack_printf(struct perf_sample *sample)
1071 {
1072 struct ip_callchain *callchain = sample->callchain;
1073 struct branch_stack *lbr_stack = sample->branch_stack;
1074 struct branch_entry *entries = perf_sample__branch_entries(sample);
1075 u64 kernel_callchain_nr = callchain->nr;
1076 unsigned int i;
1077
1078 for (i = 0; i < kernel_callchain_nr; i++) {
1079 if (callchain->ips[i] == PERF_CONTEXT_USER)
1080 break;
1081 }
1082
1083 if ((i != kernel_callchain_nr) && lbr_stack->nr) {
1084 u64 total_nr;
1085 /*
1086 * LBR callstack can only get user call chain,
1087 * i is kernel call chain number,
1088 * 1 is PERF_CONTEXT_USER.
1089 *
1090 * The user call chain is stored in LBR registers.
1091 * LBR are pair registers. The caller is stored
1092 * in "from" register, while the callee is stored
1093 * in "to" register.
1094 * For example, there is a call stack
1095 * "A"->"B"->"C"->"D".
1096 * The LBR registers will be recorded like
1097 * "C"->"D", "B"->"C", "A"->"B".
1098 * So only the first "to" register and all "from"
1099 * registers are needed to construct the whole stack.
1100 */
1101 total_nr = i + 1 + lbr_stack->nr + 1;
1102 kernel_callchain_nr = i + 1;
1103
1104 printf("... LBR call chain: nr:%" PRIu64 "\n", total_nr);
1105
1106 for (i = 0; i < kernel_callchain_nr; i++)
1107 printf("..... %2d: %016" PRIx64 "\n",
1108 i, callchain->ips[i]);
1109
1110 printf("..... %2d: %016" PRIx64 "\n",
1111 (int)(kernel_callchain_nr), entries[0].to);
1112 for (i = 0; i < lbr_stack->nr; i++)
1113 printf("..... %2d: %016" PRIx64 "\n",
1114 (int)(i + kernel_callchain_nr + 1), entries[i].from);
1115 }
1116 }
1117
callchain__printf(struct evsel * evsel,struct perf_sample * sample)1118 static void callchain__printf(struct evsel *evsel,
1119 struct perf_sample *sample)
1120 {
1121 unsigned int i;
1122 struct ip_callchain *callchain = sample->callchain;
1123
1124 if (evsel__has_branch_callstack(evsel))
1125 callchain__lbr_callstack_printf(sample);
1126
1127 printf("... FP chain: nr:%" PRIu64 "\n", callchain->nr);
1128
1129 for (i = 0; i < callchain->nr; i++)
1130 printf("..... %2d: %016" PRIx64 "\n",
1131 i, callchain->ips[i]);
1132 }
1133
branch_stack__printf(struct perf_sample * sample,bool callstack)1134 static void branch_stack__printf(struct perf_sample *sample, bool callstack)
1135 {
1136 struct branch_entry *entries = perf_sample__branch_entries(sample);
1137 uint64_t i;
1138
1139 printf("%s: nr:%" PRIu64 "\n",
1140 !callstack ? "... branch stack" : "... branch callstack",
1141 sample->branch_stack->nr);
1142
1143 for (i = 0; i < sample->branch_stack->nr; i++) {
1144 struct branch_entry *e = &entries[i];
1145
1146 if (!callstack) {
1147 printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 " %hu cycles %s%s%s%s %x\n",
1148 i, e->from, e->to,
1149 (unsigned short)e->flags.cycles,
1150 e->flags.mispred ? "M" : " ",
1151 e->flags.predicted ? "P" : " ",
1152 e->flags.abort ? "A" : " ",
1153 e->flags.in_tx ? "T" : " ",
1154 (unsigned)e->flags.reserved);
1155 } else {
1156 printf("..... %2"PRIu64": %016" PRIx64 "\n",
1157 i, i > 0 ? e->from : e->to);
1158 }
1159 }
1160 }
1161
regs_dump__printf(u64 mask,u64 * regs)1162 static void regs_dump__printf(u64 mask, u64 *regs)
1163 {
1164 unsigned rid, i = 0;
1165
1166 for_each_set_bit(rid, (unsigned long *) &mask, sizeof(mask) * 8) {
1167 u64 val = regs[i++];
1168
1169 printf(".... %-5s 0x%016" PRIx64 "\n",
1170 perf_reg_name(rid), val);
1171 }
1172 }
1173
1174 static const char *regs_abi[] = {
1175 [PERF_SAMPLE_REGS_ABI_NONE] = "none",
1176 [PERF_SAMPLE_REGS_ABI_32] = "32-bit",
1177 [PERF_SAMPLE_REGS_ABI_64] = "64-bit",
1178 };
1179
regs_dump_abi(struct regs_dump * d)1180 static inline const char *regs_dump_abi(struct regs_dump *d)
1181 {
1182 if (d->abi > PERF_SAMPLE_REGS_ABI_64)
1183 return "unknown";
1184
1185 return regs_abi[d->abi];
1186 }
1187
regs__printf(const char * type,struct regs_dump * regs)1188 static void regs__printf(const char *type, struct regs_dump *regs)
1189 {
1190 u64 mask = regs->mask;
1191
1192 printf("... %s regs: mask 0x%" PRIx64 " ABI %s\n",
1193 type,
1194 mask,
1195 regs_dump_abi(regs));
1196
1197 regs_dump__printf(mask, regs->regs);
1198 }
1199
regs_user__printf(struct perf_sample * sample)1200 static void regs_user__printf(struct perf_sample *sample)
1201 {
1202 struct regs_dump *user_regs = &sample->user_regs;
1203
1204 if (user_regs->regs)
1205 regs__printf("user", user_regs);
1206 }
1207
regs_intr__printf(struct perf_sample * sample)1208 static void regs_intr__printf(struct perf_sample *sample)
1209 {
1210 struct regs_dump *intr_regs = &sample->intr_regs;
1211
1212 if (intr_regs->regs)
1213 regs__printf("intr", intr_regs);
1214 }
1215
stack_user__printf(struct stack_dump * dump)1216 static void stack_user__printf(struct stack_dump *dump)
1217 {
1218 printf("... ustack: size %" PRIu64 ", offset 0x%x\n",
1219 dump->size, dump->offset);
1220 }
1221
evlist__print_tstamp(struct evlist * evlist,union perf_event * event,struct perf_sample * sample)1222 static void evlist__print_tstamp(struct evlist *evlist, union perf_event *event, struct perf_sample *sample)
1223 {
1224 u64 sample_type = __evlist__combined_sample_type(evlist);
1225
1226 if (event->header.type != PERF_RECORD_SAMPLE &&
1227 !evlist__sample_id_all(evlist)) {
1228 fputs("-1 -1 ", stdout);
1229 return;
1230 }
1231
1232 if ((sample_type & PERF_SAMPLE_CPU))
1233 printf("%u ", sample->cpu);
1234
1235 if (sample_type & PERF_SAMPLE_TIME)
1236 printf("%" PRIu64 " ", sample->time);
1237 }
1238
sample_read__printf(struct perf_sample * sample,u64 read_format)1239 static void sample_read__printf(struct perf_sample *sample, u64 read_format)
1240 {
1241 printf("... sample_read:\n");
1242
1243 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
1244 printf("...... time enabled %016" PRIx64 "\n",
1245 sample->read.time_enabled);
1246
1247 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
1248 printf("...... time running %016" PRIx64 "\n",
1249 sample->read.time_running);
1250
1251 if (read_format & PERF_FORMAT_GROUP) {
1252 u64 i;
1253
1254 printf(".... group nr %" PRIu64 "\n", sample->read.group.nr);
1255
1256 for (i = 0; i < sample->read.group.nr; i++) {
1257 struct sample_read_value *value;
1258
1259 value = &sample->read.group.values[i];
1260 printf("..... id %016" PRIx64
1261 ", value %016" PRIx64 "\n",
1262 value->id, value->value);
1263 }
1264 } else
1265 printf("..... id %016" PRIx64 ", value %016" PRIx64 "\n",
1266 sample->read.one.id, sample->read.one.value);
1267 }
1268
dump_event(struct evlist * evlist,union perf_event * event,u64 file_offset,struct perf_sample * sample)1269 static void dump_event(struct evlist *evlist, union perf_event *event,
1270 u64 file_offset, struct perf_sample *sample)
1271 {
1272 if (!dump_trace)
1273 return;
1274
1275 printf("\n%#" PRIx64 " [%#x]: event: %d\n",
1276 file_offset, event->header.size, event->header.type);
1277
1278 trace_event(event);
1279 if (event->header.type == PERF_RECORD_SAMPLE && evlist->trace_event_sample_raw)
1280 evlist->trace_event_sample_raw(evlist, event, sample);
1281
1282 if (sample)
1283 evlist__print_tstamp(evlist, event, sample);
1284
1285 printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset,
1286 event->header.size, perf_event__name(event->header.type));
1287 }
1288
get_page_size_name(u64 size,char * str)1289 char *get_page_size_name(u64 size, char *str)
1290 {
1291 if (!size || !unit_number__scnprintf(str, PAGE_SIZE_NAME_LEN, size))
1292 snprintf(str, PAGE_SIZE_NAME_LEN, "%s", "N/A");
1293
1294 return str;
1295 }
1296
dump_sample(struct evsel * evsel,union perf_event * event,struct perf_sample * sample)1297 static void dump_sample(struct evsel *evsel, union perf_event *event,
1298 struct perf_sample *sample)
1299 {
1300 u64 sample_type;
1301 char str[PAGE_SIZE_NAME_LEN];
1302
1303 if (!dump_trace)
1304 return;
1305
1306 printf("(IP, 0x%x): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n",
1307 event->header.misc, sample->pid, sample->tid, sample->ip,
1308 sample->period, sample->addr);
1309
1310 sample_type = evsel->core.attr.sample_type;
1311
1312 if (evsel__has_callchain(evsel))
1313 callchain__printf(evsel, sample);
1314
1315 if (evsel__has_br_stack(evsel))
1316 branch_stack__printf(sample, evsel__has_branch_callstack(evsel));
1317
1318 if (sample_type & PERF_SAMPLE_REGS_USER)
1319 regs_user__printf(sample);
1320
1321 if (sample_type & PERF_SAMPLE_REGS_INTR)
1322 regs_intr__printf(sample);
1323
1324 if (sample_type & PERF_SAMPLE_STACK_USER)
1325 stack_user__printf(&sample->user_stack);
1326
1327 if (sample_type & PERF_SAMPLE_WEIGHT_TYPE) {
1328 printf("... weight: %" PRIu64 "", sample->weight);
1329 if (sample_type & PERF_SAMPLE_WEIGHT_STRUCT) {
1330 printf(",0x%"PRIx16"", sample->ins_lat);
1331 printf(",0x%"PRIx16"", sample->p_stage_cyc);
1332 }
1333 printf("\n");
1334 }
1335
1336 if (sample_type & PERF_SAMPLE_DATA_SRC)
1337 printf(" . data_src: 0x%"PRIx64"\n", sample->data_src);
1338
1339 if (sample_type & PERF_SAMPLE_PHYS_ADDR)
1340 printf(" .. phys_addr: 0x%"PRIx64"\n", sample->phys_addr);
1341
1342 if (sample_type & PERF_SAMPLE_DATA_PAGE_SIZE)
1343 printf(" .. data page size: %s\n", get_page_size_name(sample->data_page_size, str));
1344
1345 if (sample_type & PERF_SAMPLE_CODE_PAGE_SIZE)
1346 printf(" .. code page size: %s\n", get_page_size_name(sample->code_page_size, str));
1347
1348 if (sample_type & PERF_SAMPLE_TRANSACTION)
1349 printf("... transaction: %" PRIx64 "\n", sample->transaction);
1350
1351 if (sample_type & PERF_SAMPLE_READ)
1352 sample_read__printf(sample, evsel->core.attr.read_format);
1353 }
1354
dump_read(struct evsel * evsel,union perf_event * event)1355 static void dump_read(struct evsel *evsel, union perf_event *event)
1356 {
1357 struct perf_record_read *read_event = &event->read;
1358 u64 read_format;
1359
1360 if (!dump_trace)
1361 return;
1362
1363 printf(": %d %d %s %" PRI_lu64 "\n", event->read.pid, event->read.tid,
1364 evsel__name(evsel), event->read.value);
1365
1366 if (!evsel)
1367 return;
1368
1369 read_format = evsel->core.attr.read_format;
1370
1371 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
1372 printf("... time enabled : %" PRI_lu64 "\n", read_event->time_enabled);
1373
1374 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
1375 printf("... time running : %" PRI_lu64 "\n", read_event->time_running);
1376
1377 if (read_format & PERF_FORMAT_ID)
1378 printf("... id : %" PRI_lu64 "\n", read_event->id);
1379 }
1380
machines__find_for_cpumode(struct machines * machines,union perf_event * event,struct perf_sample * sample)1381 static struct machine *machines__find_for_cpumode(struct machines *machines,
1382 union perf_event *event,
1383 struct perf_sample *sample)
1384 {
1385 if (perf_guest &&
1386 ((sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL) ||
1387 (sample->cpumode == PERF_RECORD_MISC_GUEST_USER))) {
1388 u32 pid;
1389
1390 if (event->header.type == PERF_RECORD_MMAP
1391 || event->header.type == PERF_RECORD_MMAP2)
1392 pid = event->mmap.pid;
1393 else
1394 pid = sample->pid;
1395
1396 return machines__find_guest(machines, pid);
1397 }
1398
1399 return &machines->host;
1400 }
1401
deliver_sample_value(struct evlist * evlist,struct perf_tool * tool,union perf_event * event,struct perf_sample * sample,struct sample_read_value * v,struct machine * machine)1402 static int deliver_sample_value(struct evlist *evlist,
1403 struct perf_tool *tool,
1404 union perf_event *event,
1405 struct perf_sample *sample,
1406 struct sample_read_value *v,
1407 struct machine *machine)
1408 {
1409 struct perf_sample_id *sid = evlist__id2sid(evlist, v->id);
1410 struct evsel *evsel;
1411
1412 if (sid) {
1413 sample->id = v->id;
1414 sample->period = v->value - sid->period;
1415 sid->period = v->value;
1416 }
1417
1418 if (!sid || sid->evsel == NULL) {
1419 ++evlist->stats.nr_unknown_id;
1420 return 0;
1421 }
1422
1423 /*
1424 * There's no reason to deliver sample
1425 * for zero period, bail out.
1426 */
1427 if (!sample->period)
1428 return 0;
1429
1430 evsel = container_of(sid->evsel, struct evsel, core);
1431 return tool->sample(tool, event, sample, evsel, machine);
1432 }
1433
deliver_sample_group(struct evlist * evlist,struct perf_tool * tool,union perf_event * event,struct perf_sample * sample,struct machine * machine)1434 static int deliver_sample_group(struct evlist *evlist,
1435 struct perf_tool *tool,
1436 union perf_event *event,
1437 struct perf_sample *sample,
1438 struct machine *machine)
1439 {
1440 int ret = -EINVAL;
1441 u64 i;
1442
1443 for (i = 0; i < sample->read.group.nr; i++) {
1444 ret = deliver_sample_value(evlist, tool, event, sample,
1445 &sample->read.group.values[i],
1446 machine);
1447 if (ret)
1448 break;
1449 }
1450
1451 return ret;
1452 }
1453
evlist__deliver_sample(struct evlist * evlist,struct perf_tool * tool,union perf_event * event,struct perf_sample * sample,struct evsel * evsel,struct machine * machine)1454 static int evlist__deliver_sample(struct evlist *evlist, struct perf_tool *tool,
1455 union perf_event *event, struct perf_sample *sample,
1456 struct evsel *evsel, struct machine *machine)
1457 {
1458 /* We know evsel != NULL. */
1459 u64 sample_type = evsel->core.attr.sample_type;
1460 u64 read_format = evsel->core.attr.read_format;
1461
1462 /* Standard sample delivery. */
1463 if (!(sample_type & PERF_SAMPLE_READ))
1464 return tool->sample(tool, event, sample, evsel, machine);
1465
1466 /* For PERF_SAMPLE_READ we have either single or group mode. */
1467 if (read_format & PERF_FORMAT_GROUP)
1468 return deliver_sample_group(evlist, tool, event, sample,
1469 machine);
1470 else
1471 return deliver_sample_value(evlist, tool, event, sample,
1472 &sample->read.one, machine);
1473 }
1474
machines__deliver_event(struct machines * machines,struct evlist * evlist,union perf_event * event,struct perf_sample * sample,struct perf_tool * tool,u64 file_offset)1475 static int machines__deliver_event(struct machines *machines,
1476 struct evlist *evlist,
1477 union perf_event *event,
1478 struct perf_sample *sample,
1479 struct perf_tool *tool, u64 file_offset)
1480 {
1481 struct evsel *evsel;
1482 struct machine *machine;
1483
1484 dump_event(evlist, event, file_offset, sample);
1485
1486 evsel = evlist__id2evsel(evlist, sample->id);
1487
1488 machine = machines__find_for_cpumode(machines, event, sample);
1489
1490 switch (event->header.type) {
1491 case PERF_RECORD_SAMPLE:
1492 if (evsel == NULL) {
1493 ++evlist->stats.nr_unknown_id;
1494 return 0;
1495 }
1496 dump_sample(evsel, event, sample);
1497 if (machine == NULL) {
1498 ++evlist->stats.nr_unprocessable_samples;
1499 return 0;
1500 }
1501 return evlist__deliver_sample(evlist, tool, event, sample, evsel, machine);
1502 case PERF_RECORD_MMAP:
1503 return tool->mmap(tool, event, sample, machine);
1504 case PERF_RECORD_MMAP2:
1505 if (event->header.misc & PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT)
1506 ++evlist->stats.nr_proc_map_timeout;
1507 return tool->mmap2(tool, event, sample, machine);
1508 case PERF_RECORD_COMM:
1509 return tool->comm(tool, event, sample, machine);
1510 case PERF_RECORD_NAMESPACES:
1511 return tool->namespaces(tool, event, sample, machine);
1512 case PERF_RECORD_CGROUP:
1513 return tool->cgroup(tool, event, sample, machine);
1514 case PERF_RECORD_FORK:
1515 return tool->fork(tool, event, sample, machine);
1516 case PERF_RECORD_EXIT:
1517 return tool->exit(tool, event, sample, machine);
1518 case PERF_RECORD_LOST:
1519 if (tool->lost == perf_event__process_lost)
1520 evlist->stats.total_lost += event->lost.lost;
1521 return tool->lost(tool, event, sample, machine);
1522 case PERF_RECORD_LOST_SAMPLES:
1523 if (tool->lost_samples == perf_event__process_lost_samples)
1524 evlist->stats.total_lost_samples += event->lost_samples.lost;
1525 return tool->lost_samples(tool, event, sample, machine);
1526 case PERF_RECORD_READ:
1527 dump_read(evsel, event);
1528 return tool->read(tool, event, sample, evsel, machine);
1529 case PERF_RECORD_THROTTLE:
1530 return tool->throttle(tool, event, sample, machine);
1531 case PERF_RECORD_UNTHROTTLE:
1532 return tool->unthrottle(tool, event, sample, machine);
1533 case PERF_RECORD_AUX:
1534 if (tool->aux == perf_event__process_aux) {
1535 if (event->aux.flags & PERF_AUX_FLAG_TRUNCATED)
1536 evlist->stats.total_aux_lost += 1;
1537 if (event->aux.flags & PERF_AUX_FLAG_PARTIAL)
1538 evlist->stats.total_aux_partial += 1;
1539 }
1540 return tool->aux(tool, event, sample, machine);
1541 case PERF_RECORD_ITRACE_START:
1542 return tool->itrace_start(tool, event, sample, machine);
1543 case PERF_RECORD_SWITCH:
1544 case PERF_RECORD_SWITCH_CPU_WIDE:
1545 return tool->context_switch(tool, event, sample, machine);
1546 case PERF_RECORD_KSYMBOL:
1547 return tool->ksymbol(tool, event, sample, machine);
1548 case PERF_RECORD_BPF_EVENT:
1549 return tool->bpf(tool, event, sample, machine);
1550 case PERF_RECORD_TEXT_POKE:
1551 return tool->text_poke(tool, event, sample, machine);
1552 default:
1553 ++evlist->stats.nr_unknown_events;
1554 return -1;
1555 }
1556 }
1557
perf_session__deliver_event(struct perf_session * session,union perf_event * event,struct perf_tool * tool,u64 file_offset)1558 static int perf_session__deliver_event(struct perf_session *session,
1559 union perf_event *event,
1560 struct perf_tool *tool,
1561 u64 file_offset)
1562 {
1563 struct perf_sample sample;
1564 int ret = evlist__parse_sample(session->evlist, event, &sample);
1565
1566 if (ret) {
1567 pr_err("Can't parse sample, err = %d\n", ret);
1568 return ret;
1569 }
1570
1571 ret = auxtrace__process_event(session, event, &sample, tool);
1572 if (ret < 0)
1573 return ret;
1574 if (ret > 0)
1575 return 0;
1576
1577 ret = machines__deliver_event(&session->machines, session->evlist,
1578 event, &sample, tool, file_offset);
1579
1580 if (dump_trace && sample.aux_sample.size)
1581 auxtrace__dump_auxtrace_sample(session, &sample);
1582
1583 return ret;
1584 }
1585
perf_session__process_user_event(struct perf_session * session,union perf_event * event,u64 file_offset)1586 static s64 perf_session__process_user_event(struct perf_session *session,
1587 union perf_event *event,
1588 u64 file_offset)
1589 {
1590 struct ordered_events *oe = &session->ordered_events;
1591 struct perf_tool *tool = session->tool;
1592 struct perf_sample sample = { .time = 0, };
1593 int fd = perf_data__fd(session->data);
1594 int err;
1595
1596 if (event->header.type != PERF_RECORD_COMPRESSED ||
1597 tool->compressed == perf_session__process_compressed_event_stub)
1598 dump_event(session->evlist, event, file_offset, &sample);
1599
1600 /* These events are processed right away */
1601 switch (event->header.type) {
1602 case PERF_RECORD_HEADER_ATTR:
1603 err = tool->attr(tool, event, &session->evlist);
1604 if (err == 0) {
1605 perf_session__set_id_hdr_size(session);
1606 perf_session__set_comm_exec(session);
1607 }
1608 return err;
1609 case PERF_RECORD_EVENT_UPDATE:
1610 return tool->event_update(tool, event, &session->evlist);
1611 case PERF_RECORD_HEADER_EVENT_TYPE:
1612 /*
1613 * Deprecated, but we need to handle it for sake
1614 * of old data files create in pipe mode.
1615 */
1616 return 0;
1617 case PERF_RECORD_HEADER_TRACING_DATA:
1618 /*
1619 * Setup for reading amidst mmap, but only when we
1620 * are in 'file' mode. The 'pipe' fd is in proper
1621 * place already.
1622 */
1623 if (!perf_data__is_pipe(session->data))
1624 lseek(fd, file_offset, SEEK_SET);
1625 return tool->tracing_data(session, event);
1626 case PERF_RECORD_HEADER_BUILD_ID:
1627 return tool->build_id(session, event);
1628 case PERF_RECORD_FINISHED_ROUND:
1629 return tool->finished_round(tool, event, oe);
1630 case PERF_RECORD_ID_INDEX:
1631 return tool->id_index(session, event);
1632 case PERF_RECORD_AUXTRACE_INFO:
1633 return tool->auxtrace_info(session, event);
1634 case PERF_RECORD_AUXTRACE:
1635 /* setup for reading amidst mmap */
1636 lseek(fd, file_offset + event->header.size, SEEK_SET);
1637 return tool->auxtrace(session, event);
1638 case PERF_RECORD_AUXTRACE_ERROR:
1639 perf_session__auxtrace_error_inc(session, event);
1640 return tool->auxtrace_error(session, event);
1641 case PERF_RECORD_THREAD_MAP:
1642 return tool->thread_map(session, event);
1643 case PERF_RECORD_CPU_MAP:
1644 return tool->cpu_map(session, event);
1645 case PERF_RECORD_STAT_CONFIG:
1646 return tool->stat_config(session, event);
1647 case PERF_RECORD_STAT:
1648 return tool->stat(session, event);
1649 case PERF_RECORD_STAT_ROUND:
1650 return tool->stat_round(session, event);
1651 case PERF_RECORD_TIME_CONV:
1652 session->time_conv = event->time_conv;
1653 return tool->time_conv(session, event);
1654 case PERF_RECORD_HEADER_FEATURE:
1655 return tool->feature(session, event);
1656 case PERF_RECORD_COMPRESSED:
1657 err = tool->compressed(session, event, file_offset);
1658 if (err)
1659 dump_event(session->evlist, event, file_offset, &sample);
1660 return err;
1661 default:
1662 return -EINVAL;
1663 }
1664 }
1665
perf_session__deliver_synth_event(struct perf_session * session,union perf_event * event,struct perf_sample * sample)1666 int perf_session__deliver_synth_event(struct perf_session *session,
1667 union perf_event *event,
1668 struct perf_sample *sample)
1669 {
1670 struct evlist *evlist = session->evlist;
1671 struct perf_tool *tool = session->tool;
1672
1673 events_stats__inc(&evlist->stats, event->header.type);
1674
1675 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
1676 return perf_session__process_user_event(session, event, 0);
1677
1678 return machines__deliver_event(&session->machines, evlist, event, sample, tool, 0);
1679 }
1680
event_swap(union perf_event * event,bool sample_id_all)1681 static void event_swap(union perf_event *event, bool sample_id_all)
1682 {
1683 perf_event__swap_op swap;
1684
1685 swap = perf_event__swap_ops[event->header.type];
1686 if (swap)
1687 swap(event, sample_id_all);
1688 }
1689
perf_session__peek_event(struct perf_session * session,off_t file_offset,void * buf,size_t buf_sz,union perf_event ** event_ptr,struct perf_sample * sample)1690 int perf_session__peek_event(struct perf_session *session, off_t file_offset,
1691 void *buf, size_t buf_sz,
1692 union perf_event **event_ptr,
1693 struct perf_sample *sample)
1694 {
1695 union perf_event *event;
1696 size_t hdr_sz, rest;
1697 int fd;
1698
1699 if (session->one_mmap && !session->header.needs_swap) {
1700 event = file_offset - session->one_mmap_offset +
1701 session->one_mmap_addr;
1702 goto out_parse_sample;
1703 }
1704
1705 if (perf_data__is_pipe(session->data))
1706 return -1;
1707
1708 fd = perf_data__fd(session->data);
1709 hdr_sz = sizeof(struct perf_event_header);
1710
1711 if (buf_sz < hdr_sz)
1712 return -1;
1713
1714 if (lseek(fd, file_offset, SEEK_SET) == (off_t)-1 ||
1715 readn(fd, buf, hdr_sz) != (ssize_t)hdr_sz)
1716 return -1;
1717
1718 event = (union perf_event *)buf;
1719
1720 if (session->header.needs_swap)
1721 perf_event_header__bswap(&event->header);
1722
1723 if (event->header.size < hdr_sz || event->header.size > buf_sz)
1724 return -1;
1725
1726 rest = event->header.size - hdr_sz;
1727
1728 if (readn(fd, buf, rest) != (ssize_t)rest)
1729 return -1;
1730
1731 if (session->header.needs_swap)
1732 event_swap(event, evlist__sample_id_all(session->evlist));
1733
1734 out_parse_sample:
1735
1736 if (sample && event->header.type < PERF_RECORD_USER_TYPE_START &&
1737 evlist__parse_sample(session->evlist, event, sample))
1738 return -1;
1739
1740 *event_ptr = event;
1741
1742 return 0;
1743 }
1744
perf_session__peek_events(struct perf_session * session,u64 offset,u64 size,peek_events_cb_t cb,void * data)1745 int perf_session__peek_events(struct perf_session *session, u64 offset,
1746 u64 size, peek_events_cb_t cb, void *data)
1747 {
1748 u64 max_offset = offset + size;
1749 char buf[PERF_SAMPLE_MAX_SIZE];
1750 union perf_event *event;
1751 int err;
1752
1753 do {
1754 err = perf_session__peek_event(session, offset, buf,
1755 PERF_SAMPLE_MAX_SIZE, &event,
1756 NULL);
1757 if (err)
1758 return err;
1759
1760 err = cb(session, event, offset, data);
1761 if (err)
1762 return err;
1763
1764 offset += event->header.size;
1765 if (event->header.type == PERF_RECORD_AUXTRACE)
1766 offset += event->auxtrace.size;
1767
1768 } while (offset < max_offset);
1769
1770 return err;
1771 }
1772
perf_session__process_event(struct perf_session * session,union perf_event * event,u64 file_offset)1773 static s64 perf_session__process_event(struct perf_session *session,
1774 union perf_event *event, u64 file_offset)
1775 {
1776 struct evlist *evlist = session->evlist;
1777 struct perf_tool *tool = session->tool;
1778 int ret;
1779
1780 if (session->header.needs_swap)
1781 event_swap(event, evlist__sample_id_all(evlist));
1782
1783 if (event->header.type >= PERF_RECORD_HEADER_MAX)
1784 return -EINVAL;
1785
1786 events_stats__inc(&evlist->stats, event->header.type);
1787
1788 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
1789 return perf_session__process_user_event(session, event, file_offset);
1790
1791 if (tool->ordered_events) {
1792 u64 timestamp = -1ULL;
1793
1794 ret = evlist__parse_sample_timestamp(evlist, event, ×tamp);
1795 if (ret && ret != -1)
1796 return ret;
1797
1798 ret = perf_session__queue_event(session, event, timestamp, file_offset);
1799 if (ret != -ETIME)
1800 return ret;
1801 }
1802
1803 return perf_session__deliver_event(session, event, tool, file_offset);
1804 }
1805
perf_event_header__bswap(struct perf_event_header * hdr)1806 void perf_event_header__bswap(struct perf_event_header *hdr)
1807 {
1808 hdr->type = bswap_32(hdr->type);
1809 hdr->misc = bswap_16(hdr->misc);
1810 hdr->size = bswap_16(hdr->size);
1811 }
1812
perf_session__findnew(struct perf_session * session,pid_t pid)1813 struct thread *perf_session__findnew(struct perf_session *session, pid_t pid)
1814 {
1815 return machine__findnew_thread(&session->machines.host, -1, pid);
1816 }
1817
perf_session__register_idle_thread(struct perf_session * session)1818 int perf_session__register_idle_thread(struct perf_session *session)
1819 {
1820 struct thread *thread = machine__idle_thread(&session->machines.host);
1821
1822 /* machine__idle_thread() got the thread, so put it */
1823 thread__put(thread);
1824 return thread ? 0 : -1;
1825 }
1826
1827 static void
perf_session__warn_order(const struct perf_session * session)1828 perf_session__warn_order(const struct perf_session *session)
1829 {
1830 const struct ordered_events *oe = &session->ordered_events;
1831 struct evsel *evsel;
1832 bool should_warn = true;
1833
1834 evlist__for_each_entry(session->evlist, evsel) {
1835 if (evsel->core.attr.write_backward)
1836 should_warn = false;
1837 }
1838
1839 if (!should_warn)
1840 return;
1841 if (oe->nr_unordered_events != 0)
1842 ui__warning("%u out of order events recorded.\n", oe->nr_unordered_events);
1843 }
1844
perf_session__warn_about_errors(const struct perf_session * session)1845 static void perf_session__warn_about_errors(const struct perf_session *session)
1846 {
1847 const struct events_stats *stats = &session->evlist->stats;
1848
1849 if (session->tool->lost == perf_event__process_lost &&
1850 stats->nr_events[PERF_RECORD_LOST] != 0) {
1851 ui__warning("Processed %d events and lost %d chunks!\n\n"
1852 "Check IO/CPU overload!\n\n",
1853 stats->nr_events[0],
1854 stats->nr_events[PERF_RECORD_LOST]);
1855 }
1856
1857 if (session->tool->lost_samples == perf_event__process_lost_samples) {
1858 double drop_rate;
1859
1860 drop_rate = (double)stats->total_lost_samples /
1861 (double) (stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples);
1862 if (drop_rate > 0.05) {
1863 ui__warning("Processed %" PRIu64 " samples and lost %3.2f%%!\n\n",
1864 stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples,
1865 drop_rate * 100.0);
1866 }
1867 }
1868
1869 if (session->tool->aux == perf_event__process_aux &&
1870 stats->total_aux_lost != 0) {
1871 ui__warning("AUX data lost %" PRIu64 " times out of %u!\n\n",
1872 stats->total_aux_lost,
1873 stats->nr_events[PERF_RECORD_AUX]);
1874 }
1875
1876 if (session->tool->aux == perf_event__process_aux &&
1877 stats->total_aux_partial != 0) {
1878 bool vmm_exclusive = false;
1879
1880 (void)sysfs__read_bool("module/kvm_intel/parameters/vmm_exclusive",
1881 &vmm_exclusive);
1882
1883 ui__warning("AUX data had gaps in it %" PRIu64 " times out of %u!\n\n"
1884 "Are you running a KVM guest in the background?%s\n\n",
1885 stats->total_aux_partial,
1886 stats->nr_events[PERF_RECORD_AUX],
1887 vmm_exclusive ?
1888 "\nReloading kvm_intel module with vmm_exclusive=0\n"
1889 "will reduce the gaps to only guest's timeslices." :
1890 "");
1891 }
1892
1893 if (stats->nr_unknown_events != 0) {
1894 ui__warning("Found %u unknown events!\n\n"
1895 "Is this an older tool processing a perf.data "
1896 "file generated by a more recent tool?\n\n"
1897 "If that is not the case, consider "
1898 "reporting to linux-kernel@vger.kernel.org.\n\n",
1899 stats->nr_unknown_events);
1900 }
1901
1902 if (stats->nr_unknown_id != 0) {
1903 ui__warning("%u samples with id not present in the header\n",
1904 stats->nr_unknown_id);
1905 }
1906
1907 if (stats->nr_invalid_chains != 0) {
1908 ui__warning("Found invalid callchains!\n\n"
1909 "%u out of %u events were discarded for this reason.\n\n"
1910 "Consider reporting to linux-kernel@vger.kernel.org.\n\n",
1911 stats->nr_invalid_chains,
1912 stats->nr_events[PERF_RECORD_SAMPLE]);
1913 }
1914
1915 if (stats->nr_unprocessable_samples != 0) {
1916 ui__warning("%u unprocessable samples recorded.\n"
1917 "Do you have a KVM guest running and not using 'perf kvm'?\n",
1918 stats->nr_unprocessable_samples);
1919 }
1920
1921 perf_session__warn_order(session);
1922
1923 events_stats__auxtrace_error_warn(stats);
1924
1925 if (stats->nr_proc_map_timeout != 0) {
1926 ui__warning("%d map information files for pre-existing threads were\n"
1927 "not processed, if there are samples for addresses they\n"
1928 "will not be resolved, you may find out which are these\n"
1929 "threads by running with -v and redirecting the output\n"
1930 "to a file.\n"
1931 "The time limit to process proc map is too short?\n"
1932 "Increase it by --proc-map-timeout\n",
1933 stats->nr_proc_map_timeout);
1934 }
1935 }
1936
perf_session__flush_thread_stack(struct thread * thread,void * p __maybe_unused)1937 static int perf_session__flush_thread_stack(struct thread *thread,
1938 void *p __maybe_unused)
1939 {
1940 return thread_stack__flush(thread);
1941 }
1942
perf_session__flush_thread_stacks(struct perf_session * session)1943 static int perf_session__flush_thread_stacks(struct perf_session *session)
1944 {
1945 return machines__for_each_thread(&session->machines,
1946 perf_session__flush_thread_stack,
1947 NULL);
1948 }
1949
1950 volatile int session_done;
1951
1952 static int __perf_session__process_decomp_events(struct perf_session *session);
1953
__perf_session__process_pipe_events(struct perf_session * session)1954 static int __perf_session__process_pipe_events(struct perf_session *session)
1955 {
1956 struct ordered_events *oe = &session->ordered_events;
1957 struct perf_tool *tool = session->tool;
1958 union perf_event *event;
1959 uint32_t size, cur_size = 0;
1960 void *buf = NULL;
1961 s64 skip = 0;
1962 u64 head;
1963 ssize_t err;
1964 void *p;
1965
1966 perf_tool__fill_defaults(tool);
1967
1968 head = 0;
1969 cur_size = sizeof(union perf_event);
1970
1971 buf = malloc(cur_size);
1972 if (!buf)
1973 return -errno;
1974 ordered_events__set_copy_on_queue(oe, true);
1975 more:
1976 event = buf;
1977 err = perf_data__read(session->data, event,
1978 sizeof(struct perf_event_header));
1979 if (err <= 0) {
1980 if (err == 0)
1981 goto done;
1982
1983 pr_err("failed to read event header\n");
1984 goto out_err;
1985 }
1986
1987 if (session->header.needs_swap)
1988 perf_event_header__bswap(&event->header);
1989
1990 size = event->header.size;
1991 if (size < sizeof(struct perf_event_header)) {
1992 pr_err("bad event header size\n");
1993 goto out_err;
1994 }
1995
1996 if (size > cur_size) {
1997 void *new = realloc(buf, size);
1998 if (!new) {
1999 pr_err("failed to allocate memory to read event\n");
2000 goto out_err;
2001 }
2002 buf = new;
2003 cur_size = size;
2004 event = buf;
2005 }
2006 p = event;
2007 p += sizeof(struct perf_event_header);
2008
2009 if (size - sizeof(struct perf_event_header)) {
2010 err = perf_data__read(session->data, p,
2011 size - sizeof(struct perf_event_header));
2012 if (err <= 0) {
2013 if (err == 0) {
2014 pr_err("unexpected end of event stream\n");
2015 goto done;
2016 }
2017
2018 pr_err("failed to read event data\n");
2019 goto out_err;
2020 }
2021 }
2022
2023 if ((skip = perf_session__process_event(session, event, head)) < 0) {
2024 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
2025 head, event->header.size, event->header.type);
2026 err = -EINVAL;
2027 goto out_err;
2028 }
2029
2030 head += size;
2031
2032 if (skip > 0)
2033 head += skip;
2034
2035 err = __perf_session__process_decomp_events(session);
2036 if (err)
2037 goto out_err;
2038
2039 if (!session_done())
2040 goto more;
2041 done:
2042 /* do the final flush for ordered samples */
2043 err = ordered_events__flush(oe, OE_FLUSH__FINAL);
2044 if (err)
2045 goto out_err;
2046 err = auxtrace__flush_events(session, tool);
2047 if (err)
2048 goto out_err;
2049 err = perf_session__flush_thread_stacks(session);
2050 out_err:
2051 free(buf);
2052 if (!tool->no_warn)
2053 perf_session__warn_about_errors(session);
2054 ordered_events__free(&session->ordered_events);
2055 auxtrace__free_events(session);
2056 return err;
2057 }
2058
2059 static union perf_event *
prefetch_event(char * buf,u64 head,size_t mmap_size,bool needs_swap,union perf_event * error)2060 prefetch_event(char *buf, u64 head, size_t mmap_size,
2061 bool needs_swap, union perf_event *error)
2062 {
2063 union perf_event *event;
2064
2065 /*
2066 * Ensure we have enough space remaining to read
2067 * the size of the event in the headers.
2068 */
2069 if (head + sizeof(event->header) > mmap_size)
2070 return NULL;
2071
2072 event = (union perf_event *)(buf + head);
2073 if (needs_swap)
2074 perf_event_header__bswap(&event->header);
2075
2076 if (head + event->header.size <= mmap_size)
2077 return event;
2078
2079 /* We're not fetching the event so swap back again */
2080 if (needs_swap)
2081 perf_event_header__bswap(&event->header);
2082
2083 pr_debug("%s: head=%#" PRIx64 " event->header_size=%#x, mmap_size=%#zx:"
2084 " fuzzed or compressed perf.data?\n",__func__, head, event->header.size, mmap_size);
2085
2086 return error;
2087 }
2088
2089 static union perf_event *
fetch_mmaped_event(u64 head,size_t mmap_size,char * buf,bool needs_swap)2090 fetch_mmaped_event(u64 head, size_t mmap_size, char *buf, bool needs_swap)
2091 {
2092 return prefetch_event(buf, head, mmap_size, needs_swap, ERR_PTR(-EINVAL));
2093 }
2094
2095 static union perf_event *
fetch_decomp_event(u64 head,size_t mmap_size,char * buf,bool needs_swap)2096 fetch_decomp_event(u64 head, size_t mmap_size, char *buf, bool needs_swap)
2097 {
2098 return prefetch_event(buf, head, mmap_size, needs_swap, NULL);
2099 }
2100
__perf_session__process_decomp_events(struct perf_session * session)2101 static int __perf_session__process_decomp_events(struct perf_session *session)
2102 {
2103 s64 skip;
2104 u64 size, file_pos = 0;
2105 struct decomp *decomp = session->decomp_last;
2106
2107 if (!decomp)
2108 return 0;
2109
2110 while (decomp->head < decomp->size && !session_done()) {
2111 union perf_event *event = fetch_decomp_event(decomp->head, decomp->size, decomp->data,
2112 session->header.needs_swap);
2113
2114 if (!event)
2115 break;
2116
2117 size = event->header.size;
2118
2119 if (size < sizeof(struct perf_event_header) ||
2120 (skip = perf_session__process_event(session, event, file_pos)) < 0) {
2121 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
2122 decomp->file_pos + decomp->head, event->header.size, event->header.type);
2123 return -EINVAL;
2124 }
2125
2126 if (skip)
2127 size += skip;
2128
2129 decomp->head += size;
2130 }
2131
2132 return 0;
2133 }
2134
2135 /*
2136 * On 64bit we can mmap the data file in one go. No need for tiny mmap
2137 * slices. On 32bit we use 32MB.
2138 */
2139 #if BITS_PER_LONG == 64
2140 #define MMAP_SIZE ULLONG_MAX
2141 #define NUM_MMAPS 1
2142 #else
2143 #define MMAP_SIZE (32 * 1024 * 1024ULL)
2144 #define NUM_MMAPS 128
2145 #endif
2146
2147 struct reader;
2148
2149 typedef s64 (*reader_cb_t)(struct perf_session *session,
2150 union perf_event *event,
2151 u64 file_offset);
2152
2153 struct reader {
2154 int fd;
2155 u64 data_size;
2156 u64 data_offset;
2157 reader_cb_t process;
2158 };
2159
2160 static int
reader__process_events(struct reader * rd,struct perf_session * session,struct ui_progress * prog)2161 reader__process_events(struct reader *rd, struct perf_session *session,
2162 struct ui_progress *prog)
2163 {
2164 u64 data_size = rd->data_size;
2165 u64 head, page_offset, file_offset, file_pos, size;
2166 int err = 0, mmap_prot, mmap_flags, map_idx = 0;
2167 size_t mmap_size;
2168 char *buf, *mmaps[NUM_MMAPS];
2169 union perf_event *event;
2170 s64 skip;
2171
2172 page_offset = page_size * (rd->data_offset / page_size);
2173 file_offset = page_offset;
2174 head = rd->data_offset - page_offset;
2175
2176 ui_progress__init_size(prog, data_size, "Processing events...");
2177
2178 data_size += rd->data_offset;
2179
2180 mmap_size = MMAP_SIZE;
2181 if (mmap_size > data_size) {
2182 mmap_size = data_size;
2183 session->one_mmap = true;
2184 }
2185
2186 memset(mmaps, 0, sizeof(mmaps));
2187
2188 mmap_prot = PROT_READ;
2189 mmap_flags = MAP_SHARED;
2190
2191 if (session->header.needs_swap) {
2192 mmap_prot |= PROT_WRITE;
2193 mmap_flags = MAP_PRIVATE;
2194 }
2195 remap:
2196 buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, rd->fd,
2197 file_offset);
2198 if (buf == MAP_FAILED) {
2199 pr_err("failed to mmap file\n");
2200 err = -errno;
2201 goto out;
2202 }
2203 mmaps[map_idx] = buf;
2204 map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1);
2205 file_pos = file_offset + head;
2206 if (session->one_mmap) {
2207 session->one_mmap_addr = buf;
2208 session->one_mmap_offset = file_offset;
2209 }
2210
2211 more:
2212 event = fetch_mmaped_event(head, mmap_size, buf, session->header.needs_swap);
2213 if (IS_ERR(event))
2214 return PTR_ERR(event);
2215
2216 if (!event) {
2217 if (mmaps[map_idx]) {
2218 munmap(mmaps[map_idx], mmap_size);
2219 mmaps[map_idx] = NULL;
2220 }
2221
2222 page_offset = page_size * (head / page_size);
2223 file_offset += page_offset;
2224 head -= page_offset;
2225 goto remap;
2226 }
2227
2228 size = event->header.size;
2229
2230 skip = -EINVAL;
2231
2232 if (size < sizeof(struct perf_event_header) ||
2233 (skip = rd->process(session, event, file_pos)) < 0) {
2234 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d [%s]\n",
2235 file_offset + head, event->header.size,
2236 event->header.type, strerror(-skip));
2237 err = skip;
2238 goto out;
2239 }
2240
2241 if (skip)
2242 size += skip;
2243
2244 head += size;
2245 file_pos += size;
2246
2247 err = __perf_session__process_decomp_events(session);
2248 if (err)
2249 goto out;
2250
2251 ui_progress__update(prog, size);
2252
2253 if (session_done())
2254 goto out;
2255
2256 if (file_pos < data_size)
2257 goto more;
2258
2259 out:
2260 return err;
2261 }
2262
process_simple(struct perf_session * session,union perf_event * event,u64 file_offset)2263 static s64 process_simple(struct perf_session *session,
2264 union perf_event *event,
2265 u64 file_offset)
2266 {
2267 return perf_session__process_event(session, event, file_offset);
2268 }
2269
__perf_session__process_events(struct perf_session * session)2270 static int __perf_session__process_events(struct perf_session *session)
2271 {
2272 struct reader rd = {
2273 .fd = perf_data__fd(session->data),
2274 .data_size = session->header.data_size,
2275 .data_offset = session->header.data_offset,
2276 .process = process_simple,
2277 };
2278 struct ordered_events *oe = &session->ordered_events;
2279 struct perf_tool *tool = session->tool;
2280 struct ui_progress prog;
2281 int err;
2282
2283 perf_tool__fill_defaults(tool);
2284
2285 if (rd.data_size == 0)
2286 return -1;
2287
2288 ui_progress__init_size(&prog, rd.data_size, "Processing events...");
2289
2290 err = reader__process_events(&rd, session, &prog);
2291 if (err)
2292 goto out_err;
2293 /* do the final flush for ordered samples */
2294 err = ordered_events__flush(oe, OE_FLUSH__FINAL);
2295 if (err)
2296 goto out_err;
2297 err = auxtrace__flush_events(session, tool);
2298 if (err)
2299 goto out_err;
2300 err = perf_session__flush_thread_stacks(session);
2301 out_err:
2302 ui_progress__finish();
2303 if (!tool->no_warn)
2304 perf_session__warn_about_errors(session);
2305 /*
2306 * We may switching perf.data output, make ordered_events
2307 * reusable.
2308 */
2309 ordered_events__reinit(&session->ordered_events);
2310 auxtrace__free_events(session);
2311 session->one_mmap = false;
2312 return err;
2313 }
2314
perf_session__process_events(struct perf_session * session)2315 int perf_session__process_events(struct perf_session *session)
2316 {
2317 if (perf_session__register_idle_thread(session) < 0)
2318 return -ENOMEM;
2319
2320 if (perf_data__is_pipe(session->data))
2321 return __perf_session__process_pipe_events(session);
2322
2323 return __perf_session__process_events(session);
2324 }
2325
perf_session__has_traces(struct perf_session * session,const char * msg)2326 bool perf_session__has_traces(struct perf_session *session, const char *msg)
2327 {
2328 struct evsel *evsel;
2329
2330 evlist__for_each_entry(session->evlist, evsel) {
2331 if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT)
2332 return true;
2333 }
2334
2335 pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg);
2336 return false;
2337 }
2338
map__set_kallsyms_ref_reloc_sym(struct map * map,const char * symbol_name,u64 addr)2339 int map__set_kallsyms_ref_reloc_sym(struct map *map, const char *symbol_name, u64 addr)
2340 {
2341 char *bracket;
2342 struct ref_reloc_sym *ref;
2343 struct kmap *kmap;
2344
2345 ref = zalloc(sizeof(struct ref_reloc_sym));
2346 if (ref == NULL)
2347 return -ENOMEM;
2348
2349 ref->name = strdup(symbol_name);
2350 if (ref->name == NULL) {
2351 free(ref);
2352 return -ENOMEM;
2353 }
2354
2355 bracket = strchr(ref->name, ']');
2356 if (bracket)
2357 *bracket = '\0';
2358
2359 ref->addr = addr;
2360
2361 kmap = map__kmap(map);
2362 if (kmap)
2363 kmap->ref_reloc_sym = ref;
2364
2365 return 0;
2366 }
2367
perf_session__fprintf_dsos(struct perf_session * session,FILE * fp)2368 size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp)
2369 {
2370 return machines__fprintf_dsos(&session->machines, fp);
2371 }
2372
perf_session__fprintf_dsos_buildid(struct perf_session * session,FILE * fp,bool (skip)(struct dso * dso,int parm),int parm)2373 size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp,
2374 bool (skip)(struct dso *dso, int parm), int parm)
2375 {
2376 return machines__fprintf_dsos_buildid(&session->machines, fp, skip, parm);
2377 }
2378
perf_session__fprintf_nr_events(struct perf_session * session,FILE * fp,bool skip_empty)2379 size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp,
2380 bool skip_empty)
2381 {
2382 size_t ret;
2383 const char *msg = "";
2384
2385 if (perf_header__has_feat(&session->header, HEADER_AUXTRACE))
2386 msg = " (excludes AUX area (e.g. instruction trace) decoded / synthesized events)";
2387
2388 ret = fprintf(fp, "\nAggregated stats:%s\n", msg);
2389
2390 ret += events_stats__fprintf(&session->evlist->stats, fp, skip_empty);
2391 return ret;
2392 }
2393
perf_session__fprintf(struct perf_session * session,FILE * fp)2394 size_t perf_session__fprintf(struct perf_session *session, FILE *fp)
2395 {
2396 /*
2397 * FIXME: Here we have to actually print all the machines in this
2398 * session, not just the host...
2399 */
2400 return machine__fprintf(&session->machines.host, fp);
2401 }
2402
perf_session__find_first_evtype(struct perf_session * session,unsigned int type)2403 struct evsel *perf_session__find_first_evtype(struct perf_session *session,
2404 unsigned int type)
2405 {
2406 struct evsel *pos;
2407
2408 evlist__for_each_entry(session->evlist, pos) {
2409 if (pos->core.attr.type == type)
2410 return pos;
2411 }
2412 return NULL;
2413 }
2414
perf_session__cpu_bitmap(struct perf_session * session,const char * cpu_list,unsigned long * cpu_bitmap)2415 int perf_session__cpu_bitmap(struct perf_session *session,
2416 const char *cpu_list, unsigned long *cpu_bitmap)
2417 {
2418 int i, err = -1;
2419 struct perf_cpu_map *map;
2420 int nr_cpus = min(session->header.env.nr_cpus_avail, MAX_NR_CPUS);
2421
2422 for (i = 0; i < PERF_TYPE_MAX; ++i) {
2423 struct evsel *evsel;
2424
2425 evsel = perf_session__find_first_evtype(session, i);
2426 if (!evsel)
2427 continue;
2428
2429 if (!(evsel->core.attr.sample_type & PERF_SAMPLE_CPU)) {
2430 pr_err("File does not contain CPU events. "
2431 "Remove -C option to proceed.\n");
2432 return -1;
2433 }
2434 }
2435
2436 map = perf_cpu_map__new(cpu_list);
2437 if (map == NULL) {
2438 pr_err("Invalid cpu_list\n");
2439 return -1;
2440 }
2441
2442 for (i = 0; i < map->nr; i++) {
2443 int cpu = map->map[i];
2444
2445 if (cpu >= nr_cpus) {
2446 pr_err("Requested CPU %d too large. "
2447 "Consider raising MAX_NR_CPUS\n", cpu);
2448 goto out_delete_map;
2449 }
2450
2451 set_bit(cpu, cpu_bitmap);
2452 }
2453
2454 err = 0;
2455
2456 out_delete_map:
2457 perf_cpu_map__put(map);
2458 return err;
2459 }
2460
perf_session__fprintf_info(struct perf_session * session,FILE * fp,bool full)2461 void perf_session__fprintf_info(struct perf_session *session, FILE *fp,
2462 bool full)
2463 {
2464 if (session == NULL || fp == NULL)
2465 return;
2466
2467 fprintf(fp, "# ========\n");
2468 perf_header__fprintf_info(session, fp, full);
2469 fprintf(fp, "# ========\n#\n");
2470 }
2471
perf_event__process_id_index(struct perf_session * session,union perf_event * event)2472 int perf_event__process_id_index(struct perf_session *session,
2473 union perf_event *event)
2474 {
2475 struct evlist *evlist = session->evlist;
2476 struct perf_record_id_index *ie = &event->id_index;
2477 size_t i, nr, max_nr;
2478
2479 max_nr = (ie->header.size - sizeof(struct perf_record_id_index)) /
2480 sizeof(struct id_index_entry);
2481 nr = ie->nr;
2482 if (nr > max_nr)
2483 return -EINVAL;
2484
2485 if (dump_trace)
2486 fprintf(stdout, " nr: %zu\n", nr);
2487
2488 for (i = 0; i < nr; i++) {
2489 struct id_index_entry *e = &ie->entries[i];
2490 struct perf_sample_id *sid;
2491
2492 if (dump_trace) {
2493 fprintf(stdout, " ... id: %"PRI_lu64, e->id);
2494 fprintf(stdout, " idx: %"PRI_lu64, e->idx);
2495 fprintf(stdout, " cpu: %"PRI_ld64, e->cpu);
2496 fprintf(stdout, " tid: %"PRI_ld64"\n", e->tid);
2497 }
2498
2499 sid = evlist__id2sid(evlist, e->id);
2500 if (!sid)
2501 return -ENOENT;
2502 sid->idx = e->idx;
2503 sid->cpu = e->cpu;
2504 sid->tid = e->tid;
2505 }
2506 return 0;
2507 }
2508