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perf hists: Enlarge pid sort entry size
[deliverable/linux.git] / tools / perf / util / session.c
1 #include <linux/kernel.h>
2 #include <traceevent/event-parse.h>
3
4 #include <byteswap.h>
5 #include <unistd.h>
6 #include <sys/types.h>
7 #include <sys/mman.h>
8
9 #include "evlist.h"
10 #include "evsel.h"
11 #include "session.h"
12 #include "tool.h"
13 #include "sort.h"
14 #include "util.h"
15 #include "cpumap.h"
16 #include "perf_regs.h"
17 #include "asm/bug.h"
18 #include "auxtrace.h"
19 #include "thread-stack.h"
20 #include "stat.h"
21
22 static int perf_session__deliver_event(struct perf_session *session,
23 union perf_event *event,
24 struct perf_sample *sample,
25 struct perf_tool *tool,
26 u64 file_offset);
27
28 static int perf_session__open(struct perf_session *session)
29 {
30 struct perf_data_file *file = session->file;
31
32 if (perf_session__read_header(session) < 0) {
33 pr_err("incompatible file format (rerun with -v to learn more)\n");
34 return -1;
35 }
36
37 if (perf_data_file__is_pipe(file))
38 return 0;
39
40 if (perf_header__has_feat(&session->header, HEADER_STAT))
41 return 0;
42
43 if (!perf_evlist__valid_sample_type(session->evlist)) {
44 pr_err("non matching sample_type\n");
45 return -1;
46 }
47
48 if (!perf_evlist__valid_sample_id_all(session->evlist)) {
49 pr_err("non matching sample_id_all\n");
50 return -1;
51 }
52
53 if (!perf_evlist__valid_read_format(session->evlist)) {
54 pr_err("non matching read_format\n");
55 return -1;
56 }
57
58 return 0;
59 }
60
61 void perf_session__set_id_hdr_size(struct perf_session *session)
62 {
63 u16 id_hdr_size = perf_evlist__id_hdr_size(session->evlist);
64
65 machines__set_id_hdr_size(&session->machines, id_hdr_size);
66 }
67
68 int perf_session__create_kernel_maps(struct perf_session *session)
69 {
70 int ret = machine__create_kernel_maps(&session->machines.host);
71
72 if (ret >= 0)
73 ret = machines__create_guest_kernel_maps(&session->machines);
74 return ret;
75 }
76
77 static void perf_session__destroy_kernel_maps(struct perf_session *session)
78 {
79 machines__destroy_kernel_maps(&session->machines);
80 }
81
82 static bool perf_session__has_comm_exec(struct perf_session *session)
83 {
84 struct perf_evsel *evsel;
85
86 evlist__for_each(session->evlist, evsel) {
87 if (evsel->attr.comm_exec)
88 return true;
89 }
90
91 return false;
92 }
93
94 static void perf_session__set_comm_exec(struct perf_session *session)
95 {
96 bool comm_exec = perf_session__has_comm_exec(session);
97
98 machines__set_comm_exec(&session->machines, comm_exec);
99 }
100
101 static int ordered_events__deliver_event(struct ordered_events *oe,
102 struct ordered_event *event)
103 {
104 struct perf_sample sample;
105 struct perf_session *session = container_of(oe, struct perf_session,
106 ordered_events);
107 int ret = perf_evlist__parse_sample(session->evlist, event->event, &sample);
108
109 if (ret) {
110 pr_err("Can't parse sample, err = %d\n", ret);
111 return ret;
112 }
113
114 return perf_session__deliver_event(session, event->event, &sample,
115 session->tool, event->file_offset);
116 }
117
118 struct perf_session *perf_session__new(struct perf_data_file *file,
119 bool repipe, struct perf_tool *tool)
120 {
121 struct perf_session *session = zalloc(sizeof(*session));
122
123 if (!session)
124 goto out;
125
126 session->repipe = repipe;
127 session->tool = tool;
128 INIT_LIST_HEAD(&session->auxtrace_index);
129 machines__init(&session->machines);
130 ordered_events__init(&session->ordered_events, ordered_events__deliver_event);
131
132 if (file) {
133 if (perf_data_file__open(file))
134 goto out_delete;
135
136 session->file = file;
137
138 if (perf_data_file__is_read(file)) {
139 if (perf_session__open(session) < 0)
140 goto out_close;
141
142 perf_session__set_id_hdr_size(session);
143 perf_session__set_comm_exec(session);
144 }
145 } else {
146 session->machines.host.env = &perf_env;
147 }
148
149 if (!file || perf_data_file__is_write(file)) {
150 /*
151 * In O_RDONLY mode this will be performed when reading the
152 * kernel MMAP event, in perf_event__process_mmap().
153 */
154 if (perf_session__create_kernel_maps(session) < 0)
155 pr_warning("Cannot read kernel map\n");
156 }
157
158 if (tool && tool->ordering_requires_timestamps &&
159 tool->ordered_events && !perf_evlist__sample_id_all(session->evlist)) {
160 dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n");
161 tool->ordered_events = false;
162 }
163
164 return session;
165
166 out_close:
167 perf_data_file__close(file);
168 out_delete:
169 perf_session__delete(session);
170 out:
171 return NULL;
172 }
173
174 static void perf_session__delete_threads(struct perf_session *session)
175 {
176 machine__delete_threads(&session->machines.host);
177 }
178
179 void perf_session__delete(struct perf_session *session)
180 {
181 auxtrace__free(session);
182 auxtrace_index__free(&session->auxtrace_index);
183 perf_session__destroy_kernel_maps(session);
184 perf_session__delete_threads(session);
185 perf_env__exit(&session->header.env);
186 machines__exit(&session->machines);
187 if (session->file)
188 perf_data_file__close(session->file);
189 free(session);
190 }
191
192 static int process_event_synth_tracing_data_stub(struct perf_tool *tool
193 __maybe_unused,
194 union perf_event *event
195 __maybe_unused,
196 struct perf_session *session
197 __maybe_unused)
198 {
199 dump_printf(": unhandled!\n");
200 return 0;
201 }
202
203 static int process_event_synth_attr_stub(struct perf_tool *tool __maybe_unused,
204 union perf_event *event __maybe_unused,
205 struct perf_evlist **pevlist
206 __maybe_unused)
207 {
208 dump_printf(": unhandled!\n");
209 return 0;
210 }
211
212 static int process_event_synth_event_update_stub(struct perf_tool *tool __maybe_unused,
213 union perf_event *event __maybe_unused,
214 struct perf_evlist **pevlist
215 __maybe_unused)
216 {
217 if (dump_trace)
218 perf_event__fprintf_event_update(event, stdout);
219
220 dump_printf(": unhandled!\n");
221 return 0;
222 }
223
224 static int process_event_sample_stub(struct perf_tool *tool __maybe_unused,
225 union perf_event *event __maybe_unused,
226 struct perf_sample *sample __maybe_unused,
227 struct perf_evsel *evsel __maybe_unused,
228 struct machine *machine __maybe_unused)
229 {
230 dump_printf(": unhandled!\n");
231 return 0;
232 }
233
234 static int process_event_stub(struct perf_tool *tool __maybe_unused,
235 union perf_event *event __maybe_unused,
236 struct perf_sample *sample __maybe_unused,
237 struct machine *machine __maybe_unused)
238 {
239 dump_printf(": unhandled!\n");
240 return 0;
241 }
242
243 static int process_finished_round_stub(struct perf_tool *tool __maybe_unused,
244 union perf_event *event __maybe_unused,
245 struct ordered_events *oe __maybe_unused)
246 {
247 dump_printf(": unhandled!\n");
248 return 0;
249 }
250
251 static int process_finished_round(struct perf_tool *tool,
252 union perf_event *event,
253 struct ordered_events *oe);
254
255 static int skipn(int fd, off_t n)
256 {
257 char buf[4096];
258 ssize_t ret;
259
260 while (n > 0) {
261 ret = read(fd, buf, min(n, (off_t)sizeof(buf)));
262 if (ret <= 0)
263 return ret;
264 n -= ret;
265 }
266
267 return 0;
268 }
269
270 static s64 process_event_auxtrace_stub(struct perf_tool *tool __maybe_unused,
271 union perf_event *event,
272 struct perf_session *session
273 __maybe_unused)
274 {
275 dump_printf(": unhandled!\n");
276 if (perf_data_file__is_pipe(session->file))
277 skipn(perf_data_file__fd(session->file), event->auxtrace.size);
278 return event->auxtrace.size;
279 }
280
281 static int process_event_op2_stub(struct perf_tool *tool __maybe_unused,
282 union perf_event *event __maybe_unused,
283 struct perf_session *session __maybe_unused)
284 {
285 dump_printf(": unhandled!\n");
286 return 0;
287 }
288
289
290 static
291 int process_event_thread_map_stub(struct perf_tool *tool __maybe_unused,
292 union perf_event *event __maybe_unused,
293 struct perf_session *session __maybe_unused)
294 {
295 if (dump_trace)
296 perf_event__fprintf_thread_map(event, stdout);
297
298 dump_printf(": unhandled!\n");
299 return 0;
300 }
301
302 static
303 int process_event_cpu_map_stub(struct perf_tool *tool __maybe_unused,
304 union perf_event *event __maybe_unused,
305 struct perf_session *session __maybe_unused)
306 {
307 if (dump_trace)
308 perf_event__fprintf_cpu_map(event, stdout);
309
310 dump_printf(": unhandled!\n");
311 return 0;
312 }
313
314 static
315 int process_event_stat_config_stub(struct perf_tool *tool __maybe_unused,
316 union perf_event *event __maybe_unused,
317 struct perf_session *session __maybe_unused)
318 {
319 if (dump_trace)
320 perf_event__fprintf_stat_config(event, stdout);
321
322 dump_printf(": unhandled!\n");
323 return 0;
324 }
325
326 static int process_stat_stub(struct perf_tool *tool __maybe_unused,
327 union perf_event *event __maybe_unused,
328 struct perf_session *perf_session
329 __maybe_unused)
330 {
331 if (dump_trace)
332 perf_event__fprintf_stat(event, stdout);
333
334 dump_printf(": unhandled!\n");
335 return 0;
336 }
337
338 static int process_stat_round_stub(struct perf_tool *tool __maybe_unused,
339 union perf_event *event __maybe_unused,
340 struct perf_session *perf_session
341 __maybe_unused)
342 {
343 if (dump_trace)
344 perf_event__fprintf_stat_round(event, stdout);
345
346 dump_printf(": unhandled!\n");
347 return 0;
348 }
349
350 void perf_tool__fill_defaults(struct perf_tool *tool)
351 {
352 if (tool->sample == NULL)
353 tool->sample = process_event_sample_stub;
354 if (tool->mmap == NULL)
355 tool->mmap = process_event_stub;
356 if (tool->mmap2 == NULL)
357 tool->mmap2 = process_event_stub;
358 if (tool->comm == NULL)
359 tool->comm = process_event_stub;
360 if (tool->fork == NULL)
361 tool->fork = process_event_stub;
362 if (tool->exit == NULL)
363 tool->exit = process_event_stub;
364 if (tool->lost == NULL)
365 tool->lost = perf_event__process_lost;
366 if (tool->lost_samples == NULL)
367 tool->lost_samples = perf_event__process_lost_samples;
368 if (tool->aux == NULL)
369 tool->aux = perf_event__process_aux;
370 if (tool->itrace_start == NULL)
371 tool->itrace_start = perf_event__process_itrace_start;
372 if (tool->context_switch == NULL)
373 tool->context_switch = perf_event__process_switch;
374 if (tool->read == NULL)
375 tool->read = process_event_sample_stub;
376 if (tool->throttle == NULL)
377 tool->throttle = process_event_stub;
378 if (tool->unthrottle == NULL)
379 tool->unthrottle = process_event_stub;
380 if (tool->attr == NULL)
381 tool->attr = process_event_synth_attr_stub;
382 if (tool->event_update == NULL)
383 tool->event_update = process_event_synth_event_update_stub;
384 if (tool->tracing_data == NULL)
385 tool->tracing_data = process_event_synth_tracing_data_stub;
386 if (tool->build_id == NULL)
387 tool->build_id = process_event_op2_stub;
388 if (tool->finished_round == NULL) {
389 if (tool->ordered_events)
390 tool->finished_round = process_finished_round;
391 else
392 tool->finished_round = process_finished_round_stub;
393 }
394 if (tool->id_index == NULL)
395 tool->id_index = process_event_op2_stub;
396 if (tool->auxtrace_info == NULL)
397 tool->auxtrace_info = process_event_op2_stub;
398 if (tool->auxtrace == NULL)
399 tool->auxtrace = process_event_auxtrace_stub;
400 if (tool->auxtrace_error == NULL)
401 tool->auxtrace_error = process_event_op2_stub;
402 if (tool->thread_map == NULL)
403 tool->thread_map = process_event_thread_map_stub;
404 if (tool->cpu_map == NULL)
405 tool->cpu_map = process_event_cpu_map_stub;
406 if (tool->stat_config == NULL)
407 tool->stat_config = process_event_stat_config_stub;
408 if (tool->stat == NULL)
409 tool->stat = process_stat_stub;
410 if (tool->stat_round == NULL)
411 tool->stat_round = process_stat_round_stub;
412 if (tool->time_conv == NULL)
413 tool->time_conv = process_event_op2_stub;
414 }
415
416 static void swap_sample_id_all(union perf_event *event, void *data)
417 {
418 void *end = (void *) event + event->header.size;
419 int size = end - data;
420
421 BUG_ON(size % sizeof(u64));
422 mem_bswap_64(data, size);
423 }
424
425 static void perf_event__all64_swap(union perf_event *event,
426 bool sample_id_all __maybe_unused)
427 {
428 struct perf_event_header *hdr = &event->header;
429 mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr));
430 }
431
432 static void perf_event__comm_swap(union perf_event *event, bool sample_id_all)
433 {
434 event->comm.pid = bswap_32(event->comm.pid);
435 event->comm.tid = bswap_32(event->comm.tid);
436
437 if (sample_id_all) {
438 void *data = &event->comm.comm;
439
440 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
441 swap_sample_id_all(event, data);
442 }
443 }
444
445 static void perf_event__mmap_swap(union perf_event *event,
446 bool sample_id_all)
447 {
448 event->mmap.pid = bswap_32(event->mmap.pid);
449 event->mmap.tid = bswap_32(event->mmap.tid);
450 event->mmap.start = bswap_64(event->mmap.start);
451 event->mmap.len = bswap_64(event->mmap.len);
452 event->mmap.pgoff = bswap_64(event->mmap.pgoff);
453
454 if (sample_id_all) {
455 void *data = &event->mmap.filename;
456
457 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
458 swap_sample_id_all(event, data);
459 }
460 }
461
462 static void perf_event__mmap2_swap(union perf_event *event,
463 bool sample_id_all)
464 {
465 event->mmap2.pid = bswap_32(event->mmap2.pid);
466 event->mmap2.tid = bswap_32(event->mmap2.tid);
467 event->mmap2.start = bswap_64(event->mmap2.start);
468 event->mmap2.len = bswap_64(event->mmap2.len);
469 event->mmap2.pgoff = bswap_64(event->mmap2.pgoff);
470 event->mmap2.maj = bswap_32(event->mmap2.maj);
471 event->mmap2.min = bswap_32(event->mmap2.min);
472 event->mmap2.ino = bswap_64(event->mmap2.ino);
473
474 if (sample_id_all) {
475 void *data = &event->mmap2.filename;
476
477 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
478 swap_sample_id_all(event, data);
479 }
480 }
481 static void perf_event__task_swap(union perf_event *event, bool sample_id_all)
482 {
483 event->fork.pid = bswap_32(event->fork.pid);
484 event->fork.tid = bswap_32(event->fork.tid);
485 event->fork.ppid = bswap_32(event->fork.ppid);
486 event->fork.ptid = bswap_32(event->fork.ptid);
487 event->fork.time = bswap_64(event->fork.time);
488
489 if (sample_id_all)
490 swap_sample_id_all(event, &event->fork + 1);
491 }
492
493 static void perf_event__read_swap(union perf_event *event, bool sample_id_all)
494 {
495 event->read.pid = bswap_32(event->read.pid);
496 event->read.tid = bswap_32(event->read.tid);
497 event->read.value = bswap_64(event->read.value);
498 event->read.time_enabled = bswap_64(event->read.time_enabled);
499 event->read.time_running = bswap_64(event->read.time_running);
500 event->read.id = bswap_64(event->read.id);
501
502 if (sample_id_all)
503 swap_sample_id_all(event, &event->read + 1);
504 }
505
506 static void perf_event__aux_swap(union perf_event *event, bool sample_id_all)
507 {
508 event->aux.aux_offset = bswap_64(event->aux.aux_offset);
509 event->aux.aux_size = bswap_64(event->aux.aux_size);
510 event->aux.flags = bswap_64(event->aux.flags);
511
512 if (sample_id_all)
513 swap_sample_id_all(event, &event->aux + 1);
514 }
515
516 static void perf_event__itrace_start_swap(union perf_event *event,
517 bool sample_id_all)
518 {
519 event->itrace_start.pid = bswap_32(event->itrace_start.pid);
520 event->itrace_start.tid = bswap_32(event->itrace_start.tid);
521
522 if (sample_id_all)
523 swap_sample_id_all(event, &event->itrace_start + 1);
524 }
525
526 static void perf_event__switch_swap(union perf_event *event, bool sample_id_all)
527 {
528 if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE) {
529 event->context_switch.next_prev_pid =
530 bswap_32(event->context_switch.next_prev_pid);
531 event->context_switch.next_prev_tid =
532 bswap_32(event->context_switch.next_prev_tid);
533 }
534
535 if (sample_id_all)
536 swap_sample_id_all(event, &event->context_switch + 1);
537 }
538
539 static void perf_event__throttle_swap(union perf_event *event,
540 bool sample_id_all)
541 {
542 event->throttle.time = bswap_64(event->throttle.time);
543 event->throttle.id = bswap_64(event->throttle.id);
544 event->throttle.stream_id = bswap_64(event->throttle.stream_id);
545
546 if (sample_id_all)
547 swap_sample_id_all(event, &event->throttle + 1);
548 }
549
550 static u8 revbyte(u8 b)
551 {
552 int rev = (b >> 4) | ((b & 0xf) << 4);
553 rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2);
554 rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1);
555 return (u8) rev;
556 }
557
558 /*
559 * XXX this is hack in attempt to carry flags bitfield
560 * through endian village. ABI says:
561 *
562 * Bit-fields are allocated from right to left (least to most significant)
563 * on little-endian implementations and from left to right (most to least
564 * significant) on big-endian implementations.
565 *
566 * The above seems to be byte specific, so we need to reverse each
567 * byte of the bitfield. 'Internet' also says this might be implementation
568 * specific and we probably need proper fix and carry perf_event_attr
569 * bitfield flags in separate data file FEAT_ section. Thought this seems
570 * to work for now.
571 */
572 static void swap_bitfield(u8 *p, unsigned len)
573 {
574 unsigned i;
575
576 for (i = 0; i < len; i++) {
577 *p = revbyte(*p);
578 p++;
579 }
580 }
581
582 /* exported for swapping attributes in file header */
583 void perf_event__attr_swap(struct perf_event_attr *attr)
584 {
585 attr->type = bswap_32(attr->type);
586 attr->size = bswap_32(attr->size);
587
588 #define bswap_safe(f, n) \
589 (attr->size > (offsetof(struct perf_event_attr, f) + \
590 sizeof(attr->f) * (n)))
591 #define bswap_field(f, sz) \
592 do { \
593 if (bswap_safe(f, 0)) \
594 attr->f = bswap_##sz(attr->f); \
595 } while(0)
596 #define bswap_field_16(f) bswap_field(f, 16)
597 #define bswap_field_32(f) bswap_field(f, 32)
598 #define bswap_field_64(f) bswap_field(f, 64)
599
600 bswap_field_64(config);
601 bswap_field_64(sample_period);
602 bswap_field_64(sample_type);
603 bswap_field_64(read_format);
604 bswap_field_32(wakeup_events);
605 bswap_field_32(bp_type);
606 bswap_field_64(bp_addr);
607 bswap_field_64(bp_len);
608 bswap_field_64(branch_sample_type);
609 bswap_field_64(sample_regs_user);
610 bswap_field_32(sample_stack_user);
611 bswap_field_32(aux_watermark);
612 bswap_field_16(sample_max_stack);
613
614 /*
615 * After read_format are bitfields. Check read_format because
616 * we are unable to use offsetof on bitfield.
617 */
618 if (bswap_safe(read_format, 1))
619 swap_bitfield((u8 *) (&attr->read_format + 1),
620 sizeof(u64));
621 #undef bswap_field_64
622 #undef bswap_field_32
623 #undef bswap_field
624 #undef bswap_safe
625 }
626
627 static void perf_event__hdr_attr_swap(union perf_event *event,
628 bool sample_id_all __maybe_unused)
629 {
630 size_t size;
631
632 perf_event__attr_swap(&event->attr.attr);
633
634 size = event->header.size;
635 size -= (void *)&event->attr.id - (void *)event;
636 mem_bswap_64(event->attr.id, size);
637 }
638
639 static void perf_event__event_update_swap(union perf_event *event,
640 bool sample_id_all __maybe_unused)
641 {
642 event->event_update.type = bswap_64(event->event_update.type);
643 event->event_update.id = bswap_64(event->event_update.id);
644 }
645
646 static void perf_event__event_type_swap(union perf_event *event,
647 bool sample_id_all __maybe_unused)
648 {
649 event->event_type.event_type.event_id =
650 bswap_64(event->event_type.event_type.event_id);
651 }
652
653 static void perf_event__tracing_data_swap(union perf_event *event,
654 bool sample_id_all __maybe_unused)
655 {
656 event->tracing_data.size = bswap_32(event->tracing_data.size);
657 }
658
659 static void perf_event__auxtrace_info_swap(union perf_event *event,
660 bool sample_id_all __maybe_unused)
661 {
662 size_t size;
663
664 event->auxtrace_info.type = bswap_32(event->auxtrace_info.type);
665
666 size = event->header.size;
667 size -= (void *)&event->auxtrace_info.priv - (void *)event;
668 mem_bswap_64(event->auxtrace_info.priv, size);
669 }
670
671 static void perf_event__auxtrace_swap(union perf_event *event,
672 bool sample_id_all __maybe_unused)
673 {
674 event->auxtrace.size = bswap_64(event->auxtrace.size);
675 event->auxtrace.offset = bswap_64(event->auxtrace.offset);
676 event->auxtrace.reference = bswap_64(event->auxtrace.reference);
677 event->auxtrace.idx = bswap_32(event->auxtrace.idx);
678 event->auxtrace.tid = bswap_32(event->auxtrace.tid);
679 event->auxtrace.cpu = bswap_32(event->auxtrace.cpu);
680 }
681
682 static void perf_event__auxtrace_error_swap(union perf_event *event,
683 bool sample_id_all __maybe_unused)
684 {
685 event->auxtrace_error.type = bswap_32(event->auxtrace_error.type);
686 event->auxtrace_error.code = bswap_32(event->auxtrace_error.code);
687 event->auxtrace_error.cpu = bswap_32(event->auxtrace_error.cpu);
688 event->auxtrace_error.pid = bswap_32(event->auxtrace_error.pid);
689 event->auxtrace_error.tid = bswap_32(event->auxtrace_error.tid);
690 event->auxtrace_error.ip = bswap_64(event->auxtrace_error.ip);
691 }
692
693 static void perf_event__thread_map_swap(union perf_event *event,
694 bool sample_id_all __maybe_unused)
695 {
696 unsigned i;
697
698 event->thread_map.nr = bswap_64(event->thread_map.nr);
699
700 for (i = 0; i < event->thread_map.nr; i++)
701 event->thread_map.entries[i].pid = bswap_64(event->thread_map.entries[i].pid);
702 }
703
704 static void perf_event__cpu_map_swap(union perf_event *event,
705 bool sample_id_all __maybe_unused)
706 {
707 struct cpu_map_data *data = &event->cpu_map.data;
708 struct cpu_map_entries *cpus;
709 struct cpu_map_mask *mask;
710 unsigned i;
711
712 data->type = bswap_64(data->type);
713
714 switch (data->type) {
715 case PERF_CPU_MAP__CPUS:
716 cpus = (struct cpu_map_entries *)data->data;
717
718 cpus->nr = bswap_16(cpus->nr);
719
720 for (i = 0; i < cpus->nr; i++)
721 cpus->cpu[i] = bswap_16(cpus->cpu[i]);
722 break;
723 case PERF_CPU_MAP__MASK:
724 mask = (struct cpu_map_mask *) data->data;
725
726 mask->nr = bswap_16(mask->nr);
727 mask->long_size = bswap_16(mask->long_size);
728
729 switch (mask->long_size) {
730 case 4: mem_bswap_32(&mask->mask, mask->nr); break;
731 case 8: mem_bswap_64(&mask->mask, mask->nr); break;
732 default:
733 pr_err("cpu_map swap: unsupported long size\n");
734 }
735 default:
736 break;
737 }
738 }
739
740 static void perf_event__stat_config_swap(union perf_event *event,
741 bool sample_id_all __maybe_unused)
742 {
743 u64 size;
744
745 size = event->stat_config.nr * sizeof(event->stat_config.data[0]);
746 size += 1; /* nr item itself */
747 mem_bswap_64(&event->stat_config.nr, size);
748 }
749
750 static void perf_event__stat_swap(union perf_event *event,
751 bool sample_id_all __maybe_unused)
752 {
753 event->stat.id = bswap_64(event->stat.id);
754 event->stat.thread = bswap_32(event->stat.thread);
755 event->stat.cpu = bswap_32(event->stat.cpu);
756 event->stat.val = bswap_64(event->stat.val);
757 event->stat.ena = bswap_64(event->stat.ena);
758 event->stat.run = bswap_64(event->stat.run);
759 }
760
761 static void perf_event__stat_round_swap(union perf_event *event,
762 bool sample_id_all __maybe_unused)
763 {
764 event->stat_round.type = bswap_64(event->stat_round.type);
765 event->stat_round.time = bswap_64(event->stat_round.time);
766 }
767
768 typedef void (*perf_event__swap_op)(union perf_event *event,
769 bool sample_id_all);
770
771 static perf_event__swap_op perf_event__swap_ops[] = {
772 [PERF_RECORD_MMAP] = perf_event__mmap_swap,
773 [PERF_RECORD_MMAP2] = perf_event__mmap2_swap,
774 [PERF_RECORD_COMM] = perf_event__comm_swap,
775 [PERF_RECORD_FORK] = perf_event__task_swap,
776 [PERF_RECORD_EXIT] = perf_event__task_swap,
777 [PERF_RECORD_LOST] = perf_event__all64_swap,
778 [PERF_RECORD_READ] = perf_event__read_swap,
779 [PERF_RECORD_THROTTLE] = perf_event__throttle_swap,
780 [PERF_RECORD_UNTHROTTLE] = perf_event__throttle_swap,
781 [PERF_RECORD_SAMPLE] = perf_event__all64_swap,
782 [PERF_RECORD_AUX] = perf_event__aux_swap,
783 [PERF_RECORD_ITRACE_START] = perf_event__itrace_start_swap,
784 [PERF_RECORD_LOST_SAMPLES] = perf_event__all64_swap,
785 [PERF_RECORD_SWITCH] = perf_event__switch_swap,
786 [PERF_RECORD_SWITCH_CPU_WIDE] = perf_event__switch_swap,
787 [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap,
788 [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap,
789 [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap,
790 [PERF_RECORD_HEADER_BUILD_ID] = NULL,
791 [PERF_RECORD_ID_INDEX] = perf_event__all64_swap,
792 [PERF_RECORD_AUXTRACE_INFO] = perf_event__auxtrace_info_swap,
793 [PERF_RECORD_AUXTRACE] = perf_event__auxtrace_swap,
794 [PERF_RECORD_AUXTRACE_ERROR] = perf_event__auxtrace_error_swap,
795 [PERF_RECORD_THREAD_MAP] = perf_event__thread_map_swap,
796 [PERF_RECORD_CPU_MAP] = perf_event__cpu_map_swap,
797 [PERF_RECORD_STAT_CONFIG] = perf_event__stat_config_swap,
798 [PERF_RECORD_STAT] = perf_event__stat_swap,
799 [PERF_RECORD_STAT_ROUND] = perf_event__stat_round_swap,
800 [PERF_RECORD_EVENT_UPDATE] = perf_event__event_update_swap,
801 [PERF_RECORD_TIME_CONV] = perf_event__all64_swap,
802 [PERF_RECORD_HEADER_MAX] = NULL,
803 };
804
805 /*
806 * When perf record finishes a pass on every buffers, it records this pseudo
807 * event.
808 * We record the max timestamp t found in the pass n.
809 * Assuming these timestamps are monotonic across cpus, we know that if
810 * a buffer still has events with timestamps below t, they will be all
811 * available and then read in the pass n + 1.
812 * Hence when we start to read the pass n + 2, we can safely flush every
813 * events with timestamps below t.
814 *
815 * ============ PASS n =================
816 * CPU 0 | CPU 1
817 * |
818 * cnt1 timestamps | cnt2 timestamps
819 * 1 | 2
820 * 2 | 3
821 * - | 4 <--- max recorded
822 *
823 * ============ PASS n + 1 ==============
824 * CPU 0 | CPU 1
825 * |
826 * cnt1 timestamps | cnt2 timestamps
827 * 3 | 5
828 * 4 | 6
829 * 5 | 7 <---- max recorded
830 *
831 * Flush every events below timestamp 4
832 *
833 * ============ PASS n + 2 ==============
834 * CPU 0 | CPU 1
835 * |
836 * cnt1 timestamps | cnt2 timestamps
837 * 6 | 8
838 * 7 | 9
839 * - | 10
840 *
841 * Flush every events below timestamp 7
842 * etc...
843 */
844 static int process_finished_round(struct perf_tool *tool __maybe_unused,
845 union perf_event *event __maybe_unused,
846 struct ordered_events *oe)
847 {
848 if (dump_trace)
849 fprintf(stdout, "\n");
850 return ordered_events__flush(oe, OE_FLUSH__ROUND);
851 }
852
853 int perf_session__queue_event(struct perf_session *s, union perf_event *event,
854 struct perf_sample *sample, u64 file_offset)
855 {
856 return ordered_events__queue(&s->ordered_events, event, sample, file_offset);
857 }
858
859 static void callchain__lbr_callstack_printf(struct perf_sample *sample)
860 {
861 struct ip_callchain *callchain = sample->callchain;
862 struct branch_stack *lbr_stack = sample->branch_stack;
863 u64 kernel_callchain_nr = callchain->nr;
864 unsigned int i;
865
866 for (i = 0; i < kernel_callchain_nr; i++) {
867 if (callchain->ips[i] == PERF_CONTEXT_USER)
868 break;
869 }
870
871 if ((i != kernel_callchain_nr) && lbr_stack->nr) {
872 u64 total_nr;
873 /*
874 * LBR callstack can only get user call chain,
875 * i is kernel call chain number,
876 * 1 is PERF_CONTEXT_USER.
877 *
878 * The user call chain is stored in LBR registers.
879 * LBR are pair registers. The caller is stored
880 * in "from" register, while the callee is stored
881 * in "to" register.
882 * For example, there is a call stack
883 * "A"->"B"->"C"->"D".
884 * The LBR registers will recorde like
885 * "C"->"D", "B"->"C", "A"->"B".
886 * So only the first "to" register and all "from"
887 * registers are needed to construct the whole stack.
888 */
889 total_nr = i + 1 + lbr_stack->nr + 1;
890 kernel_callchain_nr = i + 1;
891
892 printf("... LBR call chain: nr:%" PRIu64 "\n", total_nr);
893
894 for (i = 0; i < kernel_callchain_nr; i++)
895 printf("..... %2d: %016" PRIx64 "\n",
896 i, callchain->ips[i]);
897
898 printf("..... %2d: %016" PRIx64 "\n",
899 (int)(kernel_callchain_nr), lbr_stack->entries[0].to);
900 for (i = 0; i < lbr_stack->nr; i++)
901 printf("..... %2d: %016" PRIx64 "\n",
902 (int)(i + kernel_callchain_nr + 1), lbr_stack->entries[i].from);
903 }
904 }
905
906 static void callchain__printf(struct perf_evsel *evsel,
907 struct perf_sample *sample)
908 {
909 unsigned int i;
910 struct ip_callchain *callchain = sample->callchain;
911
912 if (perf_evsel__has_branch_callstack(evsel))
913 callchain__lbr_callstack_printf(sample);
914
915 printf("... FP chain: nr:%" PRIu64 "\n", callchain->nr);
916
917 for (i = 0; i < callchain->nr; i++)
918 printf("..... %2d: %016" PRIx64 "\n",
919 i, callchain->ips[i]);
920 }
921
922 static void branch_stack__printf(struct perf_sample *sample)
923 {
924 uint64_t i;
925
926 printf("... branch stack: nr:%" PRIu64 "\n", sample->branch_stack->nr);
927
928 for (i = 0; i < sample->branch_stack->nr; i++) {
929 struct branch_entry *e = &sample->branch_stack->entries[i];
930
931 printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 " %hu cycles %s%s%s%s %x\n",
932 i, e->from, e->to,
933 e->flags.cycles,
934 e->flags.mispred ? "M" : " ",
935 e->flags.predicted ? "P" : " ",
936 e->flags.abort ? "A" : " ",
937 e->flags.in_tx ? "T" : " ",
938 (unsigned)e->flags.reserved);
939 }
940 }
941
942 static void regs_dump__printf(u64 mask, u64 *regs)
943 {
944 unsigned rid, i = 0;
945
946 for_each_set_bit(rid, (unsigned long *) &mask, sizeof(mask) * 8) {
947 u64 val = regs[i++];
948
949 printf(".... %-5s 0x%" PRIx64 "\n",
950 perf_reg_name(rid), val);
951 }
952 }
953
954 static const char *regs_abi[] = {
955 [PERF_SAMPLE_REGS_ABI_NONE] = "none",
956 [PERF_SAMPLE_REGS_ABI_32] = "32-bit",
957 [PERF_SAMPLE_REGS_ABI_64] = "64-bit",
958 };
959
960 static inline const char *regs_dump_abi(struct regs_dump *d)
961 {
962 if (d->abi > PERF_SAMPLE_REGS_ABI_64)
963 return "unknown";
964
965 return regs_abi[d->abi];
966 }
967
968 static void regs__printf(const char *type, struct regs_dump *regs)
969 {
970 u64 mask = regs->mask;
971
972 printf("... %s regs: mask 0x%" PRIx64 " ABI %s\n",
973 type,
974 mask,
975 regs_dump_abi(regs));
976
977 regs_dump__printf(mask, regs->regs);
978 }
979
980 static void regs_user__printf(struct perf_sample *sample)
981 {
982 struct regs_dump *user_regs = &sample->user_regs;
983
984 if (user_regs->regs)
985 regs__printf("user", user_regs);
986 }
987
988 static void regs_intr__printf(struct perf_sample *sample)
989 {
990 struct regs_dump *intr_regs = &sample->intr_regs;
991
992 if (intr_regs->regs)
993 regs__printf("intr", intr_regs);
994 }
995
996 static void stack_user__printf(struct stack_dump *dump)
997 {
998 printf("... ustack: size %" PRIu64 ", offset 0x%x\n",
999 dump->size, dump->offset);
1000 }
1001
1002 static void perf_evlist__print_tstamp(struct perf_evlist *evlist,
1003 union perf_event *event,
1004 struct perf_sample *sample)
1005 {
1006 u64 sample_type = __perf_evlist__combined_sample_type(evlist);
1007
1008 if (event->header.type != PERF_RECORD_SAMPLE &&
1009 !perf_evlist__sample_id_all(evlist)) {
1010 fputs("-1 -1 ", stdout);
1011 return;
1012 }
1013
1014 if ((sample_type & PERF_SAMPLE_CPU))
1015 printf("%u ", sample->cpu);
1016
1017 if (sample_type & PERF_SAMPLE_TIME)
1018 printf("%" PRIu64 " ", sample->time);
1019 }
1020
1021 static void sample_read__printf(struct perf_sample *sample, u64 read_format)
1022 {
1023 printf("... sample_read:\n");
1024
1025 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
1026 printf("...... time enabled %016" PRIx64 "\n",
1027 sample->read.time_enabled);
1028
1029 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
1030 printf("...... time running %016" PRIx64 "\n",
1031 sample->read.time_running);
1032
1033 if (read_format & PERF_FORMAT_GROUP) {
1034 u64 i;
1035
1036 printf(".... group nr %" PRIu64 "\n", sample->read.group.nr);
1037
1038 for (i = 0; i < sample->read.group.nr; i++) {
1039 struct sample_read_value *value;
1040
1041 value = &sample->read.group.values[i];
1042 printf("..... id %016" PRIx64
1043 ", value %016" PRIx64 "\n",
1044 value->id, value->value);
1045 }
1046 } else
1047 printf("..... id %016" PRIx64 ", value %016" PRIx64 "\n",
1048 sample->read.one.id, sample->read.one.value);
1049 }
1050
1051 static void dump_event(struct perf_evlist *evlist, union perf_event *event,
1052 u64 file_offset, struct perf_sample *sample)
1053 {
1054 if (!dump_trace)
1055 return;
1056
1057 printf("\n%#" PRIx64 " [%#x]: event: %d\n",
1058 file_offset, event->header.size, event->header.type);
1059
1060 trace_event(event);
1061
1062 if (sample)
1063 perf_evlist__print_tstamp(evlist, event, sample);
1064
1065 printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset,
1066 event->header.size, perf_event__name(event->header.type));
1067 }
1068
1069 static void dump_sample(struct perf_evsel *evsel, union perf_event *event,
1070 struct perf_sample *sample)
1071 {
1072 u64 sample_type;
1073
1074 if (!dump_trace)
1075 return;
1076
1077 printf("(IP, 0x%x): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n",
1078 event->header.misc, sample->pid, sample->tid, sample->ip,
1079 sample->period, sample->addr);
1080
1081 sample_type = evsel->attr.sample_type;
1082
1083 if (sample_type & PERF_SAMPLE_CALLCHAIN)
1084 callchain__printf(evsel, sample);
1085
1086 if ((sample_type & PERF_SAMPLE_BRANCH_STACK) && !perf_evsel__has_branch_callstack(evsel))
1087 branch_stack__printf(sample);
1088
1089 if (sample_type & PERF_SAMPLE_REGS_USER)
1090 regs_user__printf(sample);
1091
1092 if (sample_type & PERF_SAMPLE_REGS_INTR)
1093 regs_intr__printf(sample);
1094
1095 if (sample_type & PERF_SAMPLE_STACK_USER)
1096 stack_user__printf(&sample->user_stack);
1097
1098 if (sample_type & PERF_SAMPLE_WEIGHT)
1099 printf("... weight: %" PRIu64 "\n", sample->weight);
1100
1101 if (sample_type & PERF_SAMPLE_DATA_SRC)
1102 printf(" . data_src: 0x%"PRIx64"\n", sample->data_src);
1103
1104 if (sample_type & PERF_SAMPLE_TRANSACTION)
1105 printf("... transaction: %" PRIx64 "\n", sample->transaction);
1106
1107 if (sample_type & PERF_SAMPLE_READ)
1108 sample_read__printf(sample, evsel->attr.read_format);
1109 }
1110
1111 static struct machine *machines__find_for_cpumode(struct machines *machines,
1112 union perf_event *event,
1113 struct perf_sample *sample)
1114 {
1115 struct machine *machine;
1116
1117 if (perf_guest &&
1118 ((sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL) ||
1119 (sample->cpumode == PERF_RECORD_MISC_GUEST_USER))) {
1120 u32 pid;
1121
1122 if (event->header.type == PERF_RECORD_MMAP
1123 || event->header.type == PERF_RECORD_MMAP2)
1124 pid = event->mmap.pid;
1125 else
1126 pid = sample->pid;
1127
1128 machine = machines__find(machines, pid);
1129 if (!machine)
1130 machine = machines__findnew(machines, DEFAULT_GUEST_KERNEL_ID);
1131 return machine;
1132 }
1133
1134 return &machines->host;
1135 }
1136
1137 static int deliver_sample_value(struct perf_evlist *evlist,
1138 struct perf_tool *tool,
1139 union perf_event *event,
1140 struct perf_sample *sample,
1141 struct sample_read_value *v,
1142 struct machine *machine)
1143 {
1144 struct perf_sample_id *sid = perf_evlist__id2sid(evlist, v->id);
1145
1146 if (sid) {
1147 sample->id = v->id;
1148 sample->period = v->value - sid->period;
1149 sid->period = v->value;
1150 }
1151
1152 if (!sid || sid->evsel == NULL) {
1153 ++evlist->stats.nr_unknown_id;
1154 return 0;
1155 }
1156
1157 return tool->sample(tool, event, sample, sid->evsel, machine);
1158 }
1159
1160 static int deliver_sample_group(struct perf_evlist *evlist,
1161 struct perf_tool *tool,
1162 union perf_event *event,
1163 struct perf_sample *sample,
1164 struct machine *machine)
1165 {
1166 int ret = -EINVAL;
1167 u64 i;
1168
1169 for (i = 0; i < sample->read.group.nr; i++) {
1170 ret = deliver_sample_value(evlist, tool, event, sample,
1171 &sample->read.group.values[i],
1172 machine);
1173 if (ret)
1174 break;
1175 }
1176
1177 return ret;
1178 }
1179
1180 static int
1181 perf_evlist__deliver_sample(struct perf_evlist *evlist,
1182 struct perf_tool *tool,
1183 union perf_event *event,
1184 struct perf_sample *sample,
1185 struct perf_evsel *evsel,
1186 struct machine *machine)
1187 {
1188 /* We know evsel != NULL. */
1189 u64 sample_type = evsel->attr.sample_type;
1190 u64 read_format = evsel->attr.read_format;
1191
1192 /* Standard sample delievery. */
1193 if (!(sample_type & PERF_SAMPLE_READ))
1194 return tool->sample(tool, event, sample, evsel, machine);
1195
1196 /* For PERF_SAMPLE_READ we have either single or group mode. */
1197 if (read_format & PERF_FORMAT_GROUP)
1198 return deliver_sample_group(evlist, tool, event, sample,
1199 machine);
1200 else
1201 return deliver_sample_value(evlist, tool, event, sample,
1202 &sample->read.one, machine);
1203 }
1204
1205 static int machines__deliver_event(struct machines *machines,
1206 struct perf_evlist *evlist,
1207 union perf_event *event,
1208 struct perf_sample *sample,
1209 struct perf_tool *tool, u64 file_offset)
1210 {
1211 struct perf_evsel *evsel;
1212 struct machine *machine;
1213
1214 dump_event(evlist, event, file_offset, sample);
1215
1216 evsel = perf_evlist__id2evsel(evlist, sample->id);
1217
1218 machine = machines__find_for_cpumode(machines, event, sample);
1219
1220 switch (event->header.type) {
1221 case PERF_RECORD_SAMPLE:
1222 if (evsel == NULL) {
1223 ++evlist->stats.nr_unknown_id;
1224 return 0;
1225 }
1226 dump_sample(evsel, event, sample);
1227 if (machine == NULL) {
1228 ++evlist->stats.nr_unprocessable_samples;
1229 return 0;
1230 }
1231 return perf_evlist__deliver_sample(evlist, tool, event, sample, evsel, machine);
1232 case PERF_RECORD_MMAP:
1233 return tool->mmap(tool, event, sample, machine);
1234 case PERF_RECORD_MMAP2:
1235 if (event->header.misc & PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT)
1236 ++evlist->stats.nr_proc_map_timeout;
1237 return tool->mmap2(tool, event, sample, machine);
1238 case PERF_RECORD_COMM:
1239 return tool->comm(tool, event, sample, machine);
1240 case PERF_RECORD_FORK:
1241 return tool->fork(tool, event, sample, machine);
1242 case PERF_RECORD_EXIT:
1243 return tool->exit(tool, event, sample, machine);
1244 case PERF_RECORD_LOST:
1245 if (tool->lost == perf_event__process_lost)
1246 evlist->stats.total_lost += event->lost.lost;
1247 return tool->lost(tool, event, sample, machine);
1248 case PERF_RECORD_LOST_SAMPLES:
1249 if (tool->lost_samples == perf_event__process_lost_samples)
1250 evlist->stats.total_lost_samples += event->lost_samples.lost;
1251 return tool->lost_samples(tool, event, sample, machine);
1252 case PERF_RECORD_READ:
1253 return tool->read(tool, event, sample, evsel, machine);
1254 case PERF_RECORD_THROTTLE:
1255 return tool->throttle(tool, event, sample, machine);
1256 case PERF_RECORD_UNTHROTTLE:
1257 return tool->unthrottle(tool, event, sample, machine);
1258 case PERF_RECORD_AUX:
1259 if (tool->aux == perf_event__process_aux &&
1260 (event->aux.flags & PERF_AUX_FLAG_TRUNCATED))
1261 evlist->stats.total_aux_lost += 1;
1262 return tool->aux(tool, event, sample, machine);
1263 case PERF_RECORD_ITRACE_START:
1264 return tool->itrace_start(tool, event, sample, machine);
1265 case PERF_RECORD_SWITCH:
1266 case PERF_RECORD_SWITCH_CPU_WIDE:
1267 return tool->context_switch(tool, event, sample, machine);
1268 default:
1269 ++evlist->stats.nr_unknown_events;
1270 return -1;
1271 }
1272 }
1273
1274 static int perf_session__deliver_event(struct perf_session *session,
1275 union perf_event *event,
1276 struct perf_sample *sample,
1277 struct perf_tool *tool,
1278 u64 file_offset)
1279 {
1280 int ret;
1281
1282 ret = auxtrace__process_event(session, event, sample, tool);
1283 if (ret < 0)
1284 return ret;
1285 if (ret > 0)
1286 return 0;
1287
1288 return machines__deliver_event(&session->machines, session->evlist,
1289 event, sample, tool, file_offset);
1290 }
1291
1292 static s64 perf_session__process_user_event(struct perf_session *session,
1293 union perf_event *event,
1294 u64 file_offset)
1295 {
1296 struct ordered_events *oe = &session->ordered_events;
1297 struct perf_tool *tool = session->tool;
1298 int fd = perf_data_file__fd(session->file);
1299 int err;
1300
1301 dump_event(session->evlist, event, file_offset, NULL);
1302
1303 /* These events are processed right away */
1304 switch (event->header.type) {
1305 case PERF_RECORD_HEADER_ATTR:
1306 err = tool->attr(tool, event, &session->evlist);
1307 if (err == 0) {
1308 perf_session__set_id_hdr_size(session);
1309 perf_session__set_comm_exec(session);
1310 }
1311 return err;
1312 case PERF_RECORD_EVENT_UPDATE:
1313 return tool->event_update(tool, event, &session->evlist);
1314 case PERF_RECORD_HEADER_EVENT_TYPE:
1315 /*
1316 * Depreceated, but we need to handle it for sake
1317 * of old data files create in pipe mode.
1318 */
1319 return 0;
1320 case PERF_RECORD_HEADER_TRACING_DATA:
1321 /* setup for reading amidst mmap */
1322 lseek(fd, file_offset, SEEK_SET);
1323 return tool->tracing_data(tool, event, session);
1324 case PERF_RECORD_HEADER_BUILD_ID:
1325 return tool->build_id(tool, event, session);
1326 case PERF_RECORD_FINISHED_ROUND:
1327 return tool->finished_round(tool, event, oe);
1328 case PERF_RECORD_ID_INDEX:
1329 return tool->id_index(tool, event, session);
1330 case PERF_RECORD_AUXTRACE_INFO:
1331 return tool->auxtrace_info(tool, event, session);
1332 case PERF_RECORD_AUXTRACE:
1333 /* setup for reading amidst mmap */
1334 lseek(fd, file_offset + event->header.size, SEEK_SET);
1335 return tool->auxtrace(tool, event, session);
1336 case PERF_RECORD_AUXTRACE_ERROR:
1337 perf_session__auxtrace_error_inc(session, event);
1338 return tool->auxtrace_error(tool, event, session);
1339 case PERF_RECORD_THREAD_MAP:
1340 return tool->thread_map(tool, event, session);
1341 case PERF_RECORD_CPU_MAP:
1342 return tool->cpu_map(tool, event, session);
1343 case PERF_RECORD_STAT_CONFIG:
1344 return tool->stat_config(tool, event, session);
1345 case PERF_RECORD_STAT:
1346 return tool->stat(tool, event, session);
1347 case PERF_RECORD_STAT_ROUND:
1348 return tool->stat_round(tool, event, session);
1349 case PERF_RECORD_TIME_CONV:
1350 session->time_conv = event->time_conv;
1351 return tool->time_conv(tool, event, session);
1352 default:
1353 return -EINVAL;
1354 }
1355 }
1356
1357 int perf_session__deliver_synth_event(struct perf_session *session,
1358 union perf_event *event,
1359 struct perf_sample *sample)
1360 {
1361 struct perf_evlist *evlist = session->evlist;
1362 struct perf_tool *tool = session->tool;
1363
1364 events_stats__inc(&evlist->stats, event->header.type);
1365
1366 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
1367 return perf_session__process_user_event(session, event, 0);
1368
1369 return machines__deliver_event(&session->machines, evlist, event, sample, tool, 0);
1370 }
1371
1372 static void event_swap(union perf_event *event, bool sample_id_all)
1373 {
1374 perf_event__swap_op swap;
1375
1376 swap = perf_event__swap_ops[event->header.type];
1377 if (swap)
1378 swap(event, sample_id_all);
1379 }
1380
1381 int perf_session__peek_event(struct perf_session *session, off_t file_offset,
1382 void *buf, size_t buf_sz,
1383 union perf_event **event_ptr,
1384 struct perf_sample *sample)
1385 {
1386 union perf_event *event;
1387 size_t hdr_sz, rest;
1388 int fd;
1389
1390 if (session->one_mmap && !session->header.needs_swap) {
1391 event = file_offset - session->one_mmap_offset +
1392 session->one_mmap_addr;
1393 goto out_parse_sample;
1394 }
1395
1396 if (perf_data_file__is_pipe(session->file))
1397 return -1;
1398
1399 fd = perf_data_file__fd(session->file);
1400 hdr_sz = sizeof(struct perf_event_header);
1401
1402 if (buf_sz < hdr_sz)
1403 return -1;
1404
1405 if (lseek(fd, file_offset, SEEK_SET) == (off_t)-1 ||
1406 readn(fd, buf, hdr_sz) != (ssize_t)hdr_sz)
1407 return -1;
1408
1409 event = (union perf_event *)buf;
1410
1411 if (session->header.needs_swap)
1412 perf_event_header__bswap(&event->header);
1413
1414 if (event->header.size < hdr_sz || event->header.size > buf_sz)
1415 return -1;
1416
1417 rest = event->header.size - hdr_sz;
1418
1419 if (readn(fd, buf, rest) != (ssize_t)rest)
1420 return -1;
1421
1422 if (session->header.needs_swap)
1423 event_swap(event, perf_evlist__sample_id_all(session->evlist));
1424
1425 out_parse_sample:
1426
1427 if (sample && event->header.type < PERF_RECORD_USER_TYPE_START &&
1428 perf_evlist__parse_sample(session->evlist, event, sample))
1429 return -1;
1430
1431 *event_ptr = event;
1432
1433 return 0;
1434 }
1435
1436 static s64 perf_session__process_event(struct perf_session *session,
1437 union perf_event *event, u64 file_offset)
1438 {
1439 struct perf_evlist *evlist = session->evlist;
1440 struct perf_tool *tool = session->tool;
1441 struct perf_sample sample;
1442 int ret;
1443
1444 if (session->header.needs_swap)
1445 event_swap(event, perf_evlist__sample_id_all(evlist));
1446
1447 if (event->header.type >= PERF_RECORD_HEADER_MAX)
1448 return -EINVAL;
1449
1450 events_stats__inc(&evlist->stats, event->header.type);
1451
1452 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
1453 return perf_session__process_user_event(session, event, file_offset);
1454
1455 /*
1456 * For all kernel events we get the sample data
1457 */
1458 ret = perf_evlist__parse_sample(evlist, event, &sample);
1459 if (ret)
1460 return ret;
1461
1462 if (tool->ordered_events) {
1463 ret = perf_session__queue_event(session, event, &sample, file_offset);
1464 if (ret != -ETIME)
1465 return ret;
1466 }
1467
1468 return perf_session__deliver_event(session, event, &sample, tool,
1469 file_offset);
1470 }
1471
1472 void perf_event_header__bswap(struct perf_event_header *hdr)
1473 {
1474 hdr->type = bswap_32(hdr->type);
1475 hdr->misc = bswap_16(hdr->misc);
1476 hdr->size = bswap_16(hdr->size);
1477 }
1478
1479 struct thread *perf_session__findnew(struct perf_session *session, pid_t pid)
1480 {
1481 return machine__findnew_thread(&session->machines.host, -1, pid);
1482 }
1483
1484 int perf_session__register_idle_thread(struct perf_session *session)
1485 {
1486 struct thread *thread;
1487 int err = 0;
1488
1489 thread = machine__findnew_thread(&session->machines.host, 0, 0);
1490 if (thread == NULL || thread__set_comm(thread, "swapper", 0)) {
1491 pr_err("problem inserting idle task.\n");
1492 err = -1;
1493 }
1494
1495 /* machine__findnew_thread() got the thread, so put it */
1496 thread__put(thread);
1497 return err;
1498 }
1499
1500 static void perf_session__warn_about_errors(const struct perf_session *session)
1501 {
1502 const struct events_stats *stats = &session->evlist->stats;
1503 const struct ordered_events *oe = &session->ordered_events;
1504
1505 if (session->tool->lost == perf_event__process_lost &&
1506 stats->nr_events[PERF_RECORD_LOST] != 0) {
1507 ui__warning("Processed %d events and lost %d chunks!\n\n"
1508 "Check IO/CPU overload!\n\n",
1509 stats->nr_events[0],
1510 stats->nr_events[PERF_RECORD_LOST]);
1511 }
1512
1513 if (session->tool->lost_samples == perf_event__process_lost_samples) {
1514 double drop_rate;
1515
1516 drop_rate = (double)stats->total_lost_samples /
1517 (double) (stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples);
1518 if (drop_rate > 0.05) {
1519 ui__warning("Processed %" PRIu64 " samples and lost %3.2f%% samples!\n\n",
1520 stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples,
1521 drop_rate * 100.0);
1522 }
1523 }
1524
1525 if (session->tool->aux == perf_event__process_aux &&
1526 stats->total_aux_lost != 0) {
1527 ui__warning("AUX data lost %" PRIu64 " times out of %u!\n\n",
1528 stats->total_aux_lost,
1529 stats->nr_events[PERF_RECORD_AUX]);
1530 }
1531
1532 if (stats->nr_unknown_events != 0) {
1533 ui__warning("Found %u unknown events!\n\n"
1534 "Is this an older tool processing a perf.data "
1535 "file generated by a more recent tool?\n\n"
1536 "If that is not the case, consider "
1537 "reporting to linux-kernel@vger.kernel.org.\n\n",
1538 stats->nr_unknown_events);
1539 }
1540
1541 if (stats->nr_unknown_id != 0) {
1542 ui__warning("%u samples with id not present in the header\n",
1543 stats->nr_unknown_id);
1544 }
1545
1546 if (stats->nr_invalid_chains != 0) {
1547 ui__warning("Found invalid callchains!\n\n"
1548 "%u out of %u events were discarded for this reason.\n\n"
1549 "Consider reporting to linux-kernel@vger.kernel.org.\n\n",
1550 stats->nr_invalid_chains,
1551 stats->nr_events[PERF_RECORD_SAMPLE]);
1552 }
1553
1554 if (stats->nr_unprocessable_samples != 0) {
1555 ui__warning("%u unprocessable samples recorded.\n"
1556 "Do you have a KVM guest running and not using 'perf kvm'?\n",
1557 stats->nr_unprocessable_samples);
1558 }
1559
1560 if (oe->nr_unordered_events != 0)
1561 ui__warning("%u out of order events recorded.\n", oe->nr_unordered_events);
1562
1563 events_stats__auxtrace_error_warn(stats);
1564
1565 if (stats->nr_proc_map_timeout != 0) {
1566 ui__warning("%d map information files for pre-existing threads were\n"
1567 "not processed, if there are samples for addresses they\n"
1568 "will not be resolved, you may find out which are these\n"
1569 "threads by running with -v and redirecting the output\n"
1570 "to a file.\n"
1571 "The time limit to process proc map is too short?\n"
1572 "Increase it by --proc-map-timeout\n",
1573 stats->nr_proc_map_timeout);
1574 }
1575 }
1576
1577 static int perf_session__flush_thread_stack(struct thread *thread,
1578 void *p __maybe_unused)
1579 {
1580 return thread_stack__flush(thread);
1581 }
1582
1583 static int perf_session__flush_thread_stacks(struct perf_session *session)
1584 {
1585 return machines__for_each_thread(&session->machines,
1586 perf_session__flush_thread_stack,
1587 NULL);
1588 }
1589
1590 volatile int session_done;
1591
1592 static int __perf_session__process_pipe_events(struct perf_session *session)
1593 {
1594 struct ordered_events *oe = &session->ordered_events;
1595 struct perf_tool *tool = session->tool;
1596 int fd = perf_data_file__fd(session->file);
1597 union perf_event *event;
1598 uint32_t size, cur_size = 0;
1599 void *buf = NULL;
1600 s64 skip = 0;
1601 u64 head;
1602 ssize_t err;
1603 void *p;
1604
1605 perf_tool__fill_defaults(tool);
1606
1607 head = 0;
1608 cur_size = sizeof(union perf_event);
1609
1610 buf = malloc(cur_size);
1611 if (!buf)
1612 return -errno;
1613 more:
1614 event = buf;
1615 err = readn(fd, event, sizeof(struct perf_event_header));
1616 if (err <= 0) {
1617 if (err == 0)
1618 goto done;
1619
1620 pr_err("failed to read event header\n");
1621 goto out_err;
1622 }
1623
1624 if (session->header.needs_swap)
1625 perf_event_header__bswap(&event->header);
1626
1627 size = event->header.size;
1628 if (size < sizeof(struct perf_event_header)) {
1629 pr_err("bad event header size\n");
1630 goto out_err;
1631 }
1632
1633 if (size > cur_size) {
1634 void *new = realloc(buf, size);
1635 if (!new) {
1636 pr_err("failed to allocate memory to read event\n");
1637 goto out_err;
1638 }
1639 buf = new;
1640 cur_size = size;
1641 event = buf;
1642 }
1643 p = event;
1644 p += sizeof(struct perf_event_header);
1645
1646 if (size - sizeof(struct perf_event_header)) {
1647 err = readn(fd, p, size - sizeof(struct perf_event_header));
1648 if (err <= 0) {
1649 if (err == 0) {
1650 pr_err("unexpected end of event stream\n");
1651 goto done;
1652 }
1653
1654 pr_err("failed to read event data\n");
1655 goto out_err;
1656 }
1657 }
1658
1659 if ((skip = perf_session__process_event(session, event, head)) < 0) {
1660 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
1661 head, event->header.size, event->header.type);
1662 err = -EINVAL;
1663 goto out_err;
1664 }
1665
1666 head += size;
1667
1668 if (skip > 0)
1669 head += skip;
1670
1671 if (!session_done())
1672 goto more;
1673 done:
1674 /* do the final flush for ordered samples */
1675 err = ordered_events__flush(oe, OE_FLUSH__FINAL);
1676 if (err)
1677 goto out_err;
1678 err = auxtrace__flush_events(session, tool);
1679 if (err)
1680 goto out_err;
1681 err = perf_session__flush_thread_stacks(session);
1682 out_err:
1683 free(buf);
1684 perf_session__warn_about_errors(session);
1685 ordered_events__free(&session->ordered_events);
1686 auxtrace__free_events(session);
1687 return err;
1688 }
1689
1690 static union perf_event *
1691 fetch_mmaped_event(struct perf_session *session,
1692 u64 head, size_t mmap_size, char *buf)
1693 {
1694 union perf_event *event;
1695
1696 /*
1697 * Ensure we have enough space remaining to read
1698 * the size of the event in the headers.
1699 */
1700 if (head + sizeof(event->header) > mmap_size)
1701 return NULL;
1702
1703 event = (union perf_event *)(buf + head);
1704
1705 if (session->header.needs_swap)
1706 perf_event_header__bswap(&event->header);
1707
1708 if (head + event->header.size > mmap_size) {
1709 /* We're not fetching the event so swap back again */
1710 if (session->header.needs_swap)
1711 perf_event_header__bswap(&event->header);
1712 return NULL;
1713 }
1714
1715 return event;
1716 }
1717
1718 /*
1719 * On 64bit we can mmap the data file in one go. No need for tiny mmap
1720 * slices. On 32bit we use 32MB.
1721 */
1722 #if BITS_PER_LONG == 64
1723 #define MMAP_SIZE ULLONG_MAX
1724 #define NUM_MMAPS 1
1725 #else
1726 #define MMAP_SIZE (32 * 1024 * 1024ULL)
1727 #define NUM_MMAPS 128
1728 #endif
1729
1730 static int __perf_session__process_events(struct perf_session *session,
1731 u64 data_offset, u64 data_size,
1732 u64 file_size)
1733 {
1734 struct ordered_events *oe = &session->ordered_events;
1735 struct perf_tool *tool = session->tool;
1736 int fd = perf_data_file__fd(session->file);
1737 u64 head, page_offset, file_offset, file_pos, size;
1738 int err, mmap_prot, mmap_flags, map_idx = 0;
1739 size_t mmap_size;
1740 char *buf, *mmaps[NUM_MMAPS];
1741 union perf_event *event;
1742 struct ui_progress prog;
1743 s64 skip;
1744
1745 perf_tool__fill_defaults(tool);
1746
1747 page_offset = page_size * (data_offset / page_size);
1748 file_offset = page_offset;
1749 head = data_offset - page_offset;
1750
1751 if (data_size == 0)
1752 goto out;
1753
1754 if (data_offset + data_size < file_size)
1755 file_size = data_offset + data_size;
1756
1757 ui_progress__init(&prog, file_size, "Processing events...");
1758
1759 mmap_size = MMAP_SIZE;
1760 if (mmap_size > file_size) {
1761 mmap_size = file_size;
1762 session->one_mmap = true;
1763 }
1764
1765 memset(mmaps, 0, sizeof(mmaps));
1766
1767 mmap_prot = PROT_READ;
1768 mmap_flags = MAP_SHARED;
1769
1770 if (session->header.needs_swap) {
1771 mmap_prot |= PROT_WRITE;
1772 mmap_flags = MAP_PRIVATE;
1773 }
1774 remap:
1775 buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, fd,
1776 file_offset);
1777 if (buf == MAP_FAILED) {
1778 pr_err("failed to mmap file\n");
1779 err = -errno;
1780 goto out_err;
1781 }
1782 mmaps[map_idx] = buf;
1783 map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1);
1784 file_pos = file_offset + head;
1785 if (session->one_mmap) {
1786 session->one_mmap_addr = buf;
1787 session->one_mmap_offset = file_offset;
1788 }
1789
1790 more:
1791 event = fetch_mmaped_event(session, head, mmap_size, buf);
1792 if (!event) {
1793 if (mmaps[map_idx]) {
1794 munmap(mmaps[map_idx], mmap_size);
1795 mmaps[map_idx] = NULL;
1796 }
1797
1798 page_offset = page_size * (head / page_size);
1799 file_offset += page_offset;
1800 head -= page_offset;
1801 goto remap;
1802 }
1803
1804 size = event->header.size;
1805
1806 if (size < sizeof(struct perf_event_header) ||
1807 (skip = perf_session__process_event(session, event, file_pos)) < 0) {
1808 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
1809 file_offset + head, event->header.size,
1810 event->header.type);
1811 err = -EINVAL;
1812 goto out_err;
1813 }
1814
1815 if (skip)
1816 size += skip;
1817
1818 head += size;
1819 file_pos += size;
1820
1821 ui_progress__update(&prog, size);
1822
1823 if (session_done())
1824 goto out;
1825
1826 if (file_pos < file_size)
1827 goto more;
1828
1829 out:
1830 /* do the final flush for ordered samples */
1831 err = ordered_events__flush(oe, OE_FLUSH__FINAL);
1832 if (err)
1833 goto out_err;
1834 err = auxtrace__flush_events(session, tool);
1835 if (err)
1836 goto out_err;
1837 err = perf_session__flush_thread_stacks(session);
1838 out_err:
1839 ui_progress__finish();
1840 perf_session__warn_about_errors(session);
1841 /*
1842 * We may switching perf.data output, make ordered_events
1843 * reusable.
1844 */
1845 ordered_events__reinit(&session->ordered_events);
1846 auxtrace__free_events(session);
1847 session->one_mmap = false;
1848 return err;
1849 }
1850
1851 int perf_session__process_events(struct perf_session *session)
1852 {
1853 u64 size = perf_data_file__size(session->file);
1854 int err;
1855
1856 if (perf_session__register_idle_thread(session) < 0)
1857 return -ENOMEM;
1858
1859 if (!perf_data_file__is_pipe(session->file))
1860 err = __perf_session__process_events(session,
1861 session->header.data_offset,
1862 session->header.data_size, size);
1863 else
1864 err = __perf_session__process_pipe_events(session);
1865
1866 return err;
1867 }
1868
1869 bool perf_session__has_traces(struct perf_session *session, const char *msg)
1870 {
1871 struct perf_evsel *evsel;
1872
1873 evlist__for_each(session->evlist, evsel) {
1874 if (evsel->attr.type == PERF_TYPE_TRACEPOINT)
1875 return true;
1876 }
1877
1878 pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg);
1879 return false;
1880 }
1881
1882 int maps__set_kallsyms_ref_reloc_sym(struct map **maps,
1883 const char *symbol_name, u64 addr)
1884 {
1885 char *bracket;
1886 enum map_type i;
1887 struct ref_reloc_sym *ref;
1888
1889 ref = zalloc(sizeof(struct ref_reloc_sym));
1890 if (ref == NULL)
1891 return -ENOMEM;
1892
1893 ref->name = strdup(symbol_name);
1894 if (ref->name == NULL) {
1895 free(ref);
1896 return -ENOMEM;
1897 }
1898
1899 bracket = strchr(ref->name, ']');
1900 if (bracket)
1901 *bracket = '\0';
1902
1903 ref->addr = addr;
1904
1905 for (i = 0; i < MAP__NR_TYPES; ++i) {
1906 struct kmap *kmap = map__kmap(maps[i]);
1907
1908 if (!kmap)
1909 continue;
1910 kmap->ref_reloc_sym = ref;
1911 }
1912
1913 return 0;
1914 }
1915
1916 size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp)
1917 {
1918 return machines__fprintf_dsos(&session->machines, fp);
1919 }
1920
1921 size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp,
1922 bool (skip)(struct dso *dso, int parm), int parm)
1923 {
1924 return machines__fprintf_dsos_buildid(&session->machines, fp, skip, parm);
1925 }
1926
1927 size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp)
1928 {
1929 size_t ret;
1930 const char *msg = "";
1931
1932 if (perf_header__has_feat(&session->header, HEADER_AUXTRACE))
1933 msg = " (excludes AUX area (e.g. instruction trace) decoded / synthesized events)";
1934
1935 ret = fprintf(fp, "\nAggregated stats:%s\n", msg);
1936
1937 ret += events_stats__fprintf(&session->evlist->stats, fp);
1938 return ret;
1939 }
1940
1941 size_t perf_session__fprintf(struct perf_session *session, FILE *fp)
1942 {
1943 /*
1944 * FIXME: Here we have to actually print all the machines in this
1945 * session, not just the host...
1946 */
1947 return machine__fprintf(&session->machines.host, fp);
1948 }
1949
1950 struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session,
1951 unsigned int type)
1952 {
1953 struct perf_evsel *pos;
1954
1955 evlist__for_each(session->evlist, pos) {
1956 if (pos->attr.type == type)
1957 return pos;
1958 }
1959 return NULL;
1960 }
1961
1962 int perf_session__cpu_bitmap(struct perf_session *session,
1963 const char *cpu_list, unsigned long *cpu_bitmap)
1964 {
1965 int i, err = -1;
1966 struct cpu_map *map;
1967
1968 for (i = 0; i < PERF_TYPE_MAX; ++i) {
1969 struct perf_evsel *evsel;
1970
1971 evsel = perf_session__find_first_evtype(session, i);
1972 if (!evsel)
1973 continue;
1974
1975 if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) {
1976 pr_err("File does not contain CPU events. "
1977 "Remove -c option to proceed.\n");
1978 return -1;
1979 }
1980 }
1981
1982 map = cpu_map__new(cpu_list);
1983 if (map == NULL) {
1984 pr_err("Invalid cpu_list\n");
1985 return -1;
1986 }
1987
1988 for (i = 0; i < map->nr; i++) {
1989 int cpu = map->map[i];
1990
1991 if (cpu >= MAX_NR_CPUS) {
1992 pr_err("Requested CPU %d too large. "
1993 "Consider raising MAX_NR_CPUS\n", cpu);
1994 goto out_delete_map;
1995 }
1996
1997 set_bit(cpu, cpu_bitmap);
1998 }
1999
2000 err = 0;
2001
2002 out_delete_map:
2003 cpu_map__put(map);
2004 return err;
2005 }
2006
2007 void perf_session__fprintf_info(struct perf_session *session, FILE *fp,
2008 bool full)
2009 {
2010 struct stat st;
2011 int fd, ret;
2012
2013 if (session == NULL || fp == NULL)
2014 return;
2015
2016 fd = perf_data_file__fd(session->file);
2017
2018 ret = fstat(fd, &st);
2019 if (ret == -1)
2020 return;
2021
2022 fprintf(fp, "# ========\n");
2023 fprintf(fp, "# captured on: %s", ctime(&st.st_ctime));
2024 perf_header__fprintf_info(session, fp, full);
2025 fprintf(fp, "# ========\n#\n");
2026 }
2027
2028
2029 int __perf_session__set_tracepoints_handlers(struct perf_session *session,
2030 const struct perf_evsel_str_handler *assocs,
2031 size_t nr_assocs)
2032 {
2033 struct perf_evsel *evsel;
2034 size_t i;
2035 int err;
2036
2037 for (i = 0; i < nr_assocs; i++) {
2038 /*
2039 * Adding a handler for an event not in the session,
2040 * just ignore it.
2041 */
2042 evsel = perf_evlist__find_tracepoint_by_name(session->evlist, assocs[i].name);
2043 if (evsel == NULL)
2044 continue;
2045
2046 err = -EEXIST;
2047 if (evsel->handler != NULL)
2048 goto out;
2049 evsel->handler = assocs[i].handler;
2050 }
2051
2052 err = 0;
2053 out:
2054 return err;
2055 }
2056
2057 int perf_event__process_id_index(struct perf_tool *tool __maybe_unused,
2058 union perf_event *event,
2059 struct perf_session *session)
2060 {
2061 struct perf_evlist *evlist = session->evlist;
2062 struct id_index_event *ie = &event->id_index;
2063 size_t i, nr, max_nr;
2064
2065 max_nr = (ie->header.size - sizeof(struct id_index_event)) /
2066 sizeof(struct id_index_entry);
2067 nr = ie->nr;
2068 if (nr > max_nr)
2069 return -EINVAL;
2070
2071 if (dump_trace)
2072 fprintf(stdout, " nr: %zu\n", nr);
2073
2074 for (i = 0; i < nr; i++) {
2075 struct id_index_entry *e = &ie->entries[i];
2076 struct perf_sample_id *sid;
2077
2078 if (dump_trace) {
2079 fprintf(stdout, " ... id: %"PRIu64, e->id);
2080 fprintf(stdout, " idx: %"PRIu64, e->idx);
2081 fprintf(stdout, " cpu: %"PRId64, e->cpu);
2082 fprintf(stdout, " tid: %"PRId64"\n", e->tid);
2083 }
2084
2085 sid = perf_evlist__id2sid(evlist, e->id);
2086 if (!sid)
2087 return -ENOENT;
2088 sid->idx = e->idx;
2089 sid->cpu = e->cpu;
2090 sid->tid = e->tid;
2091 }
2092 return 0;
2093 }
2094
2095 int perf_event__synthesize_id_index(struct perf_tool *tool,
2096 perf_event__handler_t process,
2097 struct perf_evlist *evlist,
2098 struct machine *machine)
2099 {
2100 union perf_event *ev;
2101 struct perf_evsel *evsel;
2102 size_t nr = 0, i = 0, sz, max_nr, n;
2103 int err;
2104
2105 pr_debug2("Synthesizing id index\n");
2106
2107 max_nr = (UINT16_MAX - sizeof(struct id_index_event)) /
2108 sizeof(struct id_index_entry);
2109
2110 evlist__for_each(evlist, evsel)
2111 nr += evsel->ids;
2112
2113 n = nr > max_nr ? max_nr : nr;
2114 sz = sizeof(struct id_index_event) + n * sizeof(struct id_index_entry);
2115 ev = zalloc(sz);
2116 if (!ev)
2117 return -ENOMEM;
2118
2119 ev->id_index.header.type = PERF_RECORD_ID_INDEX;
2120 ev->id_index.header.size = sz;
2121 ev->id_index.nr = n;
2122
2123 evlist__for_each(evlist, evsel) {
2124 u32 j;
2125
2126 for (j = 0; j < evsel->ids; j++) {
2127 struct id_index_entry *e;
2128 struct perf_sample_id *sid;
2129
2130 if (i >= n) {
2131 err = process(tool, ev, NULL, machine);
2132 if (err)
2133 goto out_err;
2134 nr -= n;
2135 i = 0;
2136 }
2137
2138 e = &ev->id_index.entries[i++];
2139
2140 e->id = evsel->id[j];
2141
2142 sid = perf_evlist__id2sid(evlist, e->id);
2143 if (!sid) {
2144 free(ev);
2145 return -ENOENT;
2146 }
2147
2148 e->idx = sid->idx;
2149 e->cpu = sid->cpu;
2150 e->tid = sid->tid;
2151 }
2152 }
2153
2154 sz = sizeof(struct id_index_event) + nr * sizeof(struct id_index_entry);
2155 ev->id_index.header.size = sz;
2156 ev->id_index.nr = nr;
2157
2158 err = process(tool, ev, NULL, machine);
2159 out_err:
2160 free(ev);
2161
2162 return err;
2163 }
Linux kernel - Deliverables
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