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Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[cris-mirror.git] / tools / perf / util / session.c
blobc71ced7db152e6380984d740311ec205679c39eb
1 // SPDX-License-Identifier: GPL-2.0
2 #include <errno.h>
3 #include <inttypes.h>
4 #include <linux/kernel.h>
5 #include <traceevent/event-parse.h>
6 #include <api/fs/fs.h>
7
8 #include <byteswap.h>
9 #include <unistd.h>
10 #include <sys/types.h>
11 #include <sys/mman.h>
12
13 #include "evlist.h"
14 #include "evsel.h"
15 #include "memswap.h"
16 #include "session.h"
17 #include "tool.h"
18 #include "sort.h"
19 #include "util.h"
20 #include "cpumap.h"
21 #include "perf_regs.h"
22 #include "asm/bug.h"
23 #include "auxtrace.h"
24 #include "thread.h"
25 #include "thread-stack.h"
26 #include "stat.h"
27
28 static int perf_session__deliver_event(struct perf_session *session,
29 union perf_event *event,
30 struct perf_tool *tool,
31 u64 file_offset);
32
33 static int perf_session__open(struct perf_session *session)
34 {
35 struct perf_data *data = session->data;
36
37 if (perf_session__read_header(session) < 0) {
38 pr_err("incompatible file format (rerun with -v to learn more)\n");
39 return -1;
40 }
41
42 if (perf_data__is_pipe(data))
43 return 0;
44
45 if (perf_header__has_feat(&session->header, HEADER_STAT))
46 return 0;
47
48 if (!perf_evlist__valid_sample_type(session->evlist)) {
49 pr_err("non matching sample_type\n");
50 return -1;
51 }
52
53 if (!perf_evlist__valid_sample_id_all(session->evlist)) {
54 pr_err("non matching sample_id_all\n");
55 return -1;
56 }
57
58 if (!perf_evlist__valid_read_format(session->evlist)) {
59 pr_err("non matching read_format\n");
60 return -1;
61 }
62
63 return 0;
64 }
65
66 void perf_session__set_id_hdr_size(struct perf_session *session)
67 {
68 u16 id_hdr_size = perf_evlist__id_hdr_size(session->evlist);
69
70 machines__set_id_hdr_size(&session->machines, id_hdr_size);
71 }
72
73 int perf_session__create_kernel_maps(struct perf_session *session)
74 {
75 int ret = machine__create_kernel_maps(&session->machines.host);
76
77 if (ret >= 0)
78 ret = machines__create_guest_kernel_maps(&session->machines);
79 return ret;
80 }
81
82 static void perf_session__destroy_kernel_maps(struct perf_session *session)
83 {
84 machines__destroy_kernel_maps(&session->machines);
85 }
86
87 static bool perf_session__has_comm_exec(struct perf_session *session)
88 {
89 struct perf_evsel *evsel;
90
91 evlist__for_each_entry(session->evlist, evsel) {
92 if (evsel->attr.comm_exec)
93 return true;
94 }
95
96 return false;
97 }
98
99 static void perf_session__set_comm_exec(struct perf_session *session)
100 {
101 bool comm_exec = perf_session__has_comm_exec(session);
102
103 machines__set_comm_exec(&session->machines, comm_exec);
104 }
105
106 static int ordered_events__deliver_event(struct ordered_events *oe,
107 struct ordered_event *event)
108 {
109 struct perf_session *session = container_of(oe, struct perf_session,
110 ordered_events);
111
112 return perf_session__deliver_event(session, event->event,
113 session->tool, event->file_offset);
114 }
115
116 struct perf_session *perf_session__new(struct perf_data *data,
117 bool repipe, struct perf_tool *tool)
118 {
119 struct perf_session *session = zalloc(sizeof(*session));
120
121 if (!session)
122 goto out;
123
124 session->repipe = repipe;
125 session->tool = tool;
126 INIT_LIST_HEAD(&session->auxtrace_index);
127 machines__init(&session->machines);
128 ordered_events__init(&session->ordered_events, ordered_events__deliver_event);
129
130 if (data) {
131 if (perf_data__open(data))
132 goto out_delete;
133
134 session->data = data;
135
136 if (perf_data__is_read(data)) {
137 if (perf_session__open(session) < 0)
138 goto out_close;
139
140 /*
141 * set session attributes that are present in perf.data
142 * but not in pipe-mode.
143 */
144 if (!data->is_pipe) {
145 perf_session__set_id_hdr_size(session);
146 perf_session__set_comm_exec(session);
147 }
148 }
149 } else {
150 session->machines.host.env = &perf_env;
151 }
152
153 if (!data || perf_data__is_write(data)) {
154 /*
155 * In O_RDONLY mode this will be performed when reading the
156 * kernel MMAP event, in perf_event__process_mmap().
157 */
158 if (perf_session__create_kernel_maps(session) < 0)
159 pr_warning("Cannot read kernel map\n");
160 }
161
162 /*
163 * In pipe-mode, evlist is empty until PERF_RECORD_HEADER_ATTR is
164 * processed, so perf_evlist__sample_id_all is not meaningful here.
165 */
166 if ((!data || !data->is_pipe) && tool && tool->ordering_requires_timestamps &&
167 tool->ordered_events && !perf_evlist__sample_id_all(session->evlist)) {
168 dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n");
169 tool->ordered_events = false;
170 }
171
172 return session;
173
174 out_close:
175 perf_data__close(data);
176 out_delete:
177 perf_session__delete(session);
178 out:
179 return NULL;
180 }
181
182 static void perf_session__delete_threads(struct perf_session *session)
183 {
184 machine__delete_threads(&session->machines.host);
185 }
186
187 void perf_session__delete(struct perf_session *session)
188 {
189 if (session == NULL)
190 return;
191 auxtrace__free(session);
192 auxtrace_index__free(&session->auxtrace_index);
193 perf_session__destroy_kernel_maps(session);
194 perf_session__delete_threads(session);
195 perf_env__exit(&session->header.env);
196 machines__exit(&session->machines);
197 if (session->data)
198 perf_data__close(session->data);
199 free(session);
200 }
201
202 static int process_event_synth_tracing_data_stub(struct perf_tool *tool
203 __maybe_unused,
204 union perf_event *event
205 __maybe_unused,
206 struct perf_session *session
207 __maybe_unused)
208 {
209 dump_printf(": unhandled!\n");
210 return 0;
211 }
212
213 static int process_event_synth_attr_stub(struct perf_tool *tool __maybe_unused,
214 union perf_event *event __maybe_unused,
215 struct perf_evlist **pevlist
216 __maybe_unused)
217 {
218 dump_printf(": unhandled!\n");
219 return 0;
220 }
221
222 static int process_event_synth_event_update_stub(struct perf_tool *tool __maybe_unused,
223 union perf_event *event __maybe_unused,
224 struct perf_evlist **pevlist
225 __maybe_unused)
226 {
227 if (dump_trace)
228 perf_event__fprintf_event_update(event, stdout);
229
230 dump_printf(": unhandled!\n");
231 return 0;
232 }
233
234 static int process_event_sample_stub(struct perf_tool *tool __maybe_unused,
235 union perf_event *event __maybe_unused,
236 struct perf_sample *sample __maybe_unused,
237 struct perf_evsel *evsel __maybe_unused,
238 struct machine *machine __maybe_unused)
239 {
240 dump_printf(": unhandled!\n");
241 return 0;
242 }
243
244 static int process_event_stub(struct perf_tool *tool __maybe_unused,
245 union perf_event *event __maybe_unused,
246 struct perf_sample *sample __maybe_unused,
247 struct machine *machine __maybe_unused)
248 {
249 dump_printf(": unhandled!\n");
250 return 0;
251 }
252
253 static int process_finished_round_stub(struct perf_tool *tool __maybe_unused,
254 union perf_event *event __maybe_unused,
255 struct ordered_events *oe __maybe_unused)
256 {
257 dump_printf(": unhandled!\n");
258 return 0;
259 }
260
261 static int process_finished_round(struct perf_tool *tool,
262 union perf_event *event,
263 struct ordered_events *oe);
264
265 static int skipn(int fd, off_t n)
266 {
267 char buf[4096];
268 ssize_t ret;
269
270 while (n > 0) {
271 ret = read(fd, buf, min(n, (off_t)sizeof(buf)));
272 if (ret <= 0)
273 return ret;
274 n -= ret;
275 }
276
277 return 0;
278 }
279
280 static s64 process_event_auxtrace_stub(struct perf_tool *tool __maybe_unused,
281 union perf_event *event,
282 struct perf_session *session
283 __maybe_unused)
284 {
285 dump_printf(": unhandled!\n");
286 if (perf_data__is_pipe(session->data))
287 skipn(perf_data__fd(session->data), event->auxtrace.size);
288 return event->auxtrace.size;
289 }
290
291 static int process_event_op2_stub(struct perf_tool *tool __maybe_unused,
292 union perf_event *event __maybe_unused,
293 struct perf_session *session __maybe_unused)
294 {
295 dump_printf(": unhandled!\n");
296 return 0;
297 }
298
299
300 static
301 int process_event_thread_map_stub(struct perf_tool *tool __maybe_unused,
302 union perf_event *event __maybe_unused,
303 struct perf_session *session __maybe_unused)
304 {
305 if (dump_trace)
306 perf_event__fprintf_thread_map(event, stdout);
307
308 dump_printf(": unhandled!\n");
309 return 0;
310 }
311
312 static
313 int process_event_cpu_map_stub(struct perf_tool *tool __maybe_unused,
314 union perf_event *event __maybe_unused,
315 struct perf_session *session __maybe_unused)
316 {
317 if (dump_trace)
318 perf_event__fprintf_cpu_map(event, stdout);
319
320 dump_printf(": unhandled!\n");
321 return 0;
322 }
323
324 static
325 int process_event_stat_config_stub(struct perf_tool *tool __maybe_unused,
326 union perf_event *event __maybe_unused,
327 struct perf_session *session __maybe_unused)
328 {
329 if (dump_trace)
330 perf_event__fprintf_stat_config(event, stdout);
331
332 dump_printf(": unhandled!\n");
333 return 0;
334 }
335
336 static int process_stat_stub(struct perf_tool *tool __maybe_unused,
337 union perf_event *event __maybe_unused,
338 struct perf_session *perf_session
339 __maybe_unused)
340 {
341 if (dump_trace)
342 perf_event__fprintf_stat(event, stdout);
343
344 dump_printf(": unhandled!\n");
345 return 0;
346 }
347
348 static int process_stat_round_stub(struct perf_tool *tool __maybe_unused,
349 union perf_event *event __maybe_unused,
350 struct perf_session *perf_session
351 __maybe_unused)
352 {
353 if (dump_trace)
354 perf_event__fprintf_stat_round(event, stdout);
355
356 dump_printf(": unhandled!\n");
357 return 0;
358 }
359
360 void perf_tool__fill_defaults(struct perf_tool *tool)
361 {
362 if (tool->sample == NULL)
363 tool->sample = process_event_sample_stub;
364 if (tool->mmap == NULL)
365 tool->mmap = process_event_stub;
366 if (tool->mmap2 == NULL)
367 tool->mmap2 = process_event_stub;
368 if (tool->comm == NULL)
369 tool->comm = process_event_stub;
370 if (tool->namespaces == NULL)
371 tool->namespaces = process_event_stub;
372 if (tool->fork == NULL)
373 tool->fork = process_event_stub;
374 if (tool->exit == NULL)
375 tool->exit = process_event_stub;
376 if (tool->lost == NULL)
377 tool->lost = perf_event__process_lost;
378 if (tool->lost_samples == NULL)
379 tool->lost_samples = perf_event__process_lost_samples;
380 if (tool->aux == NULL)
381 tool->aux = perf_event__process_aux;
382 if (tool->itrace_start == NULL)
383 tool->itrace_start = perf_event__process_itrace_start;
384 if (tool->context_switch == NULL)
385 tool->context_switch = perf_event__process_switch;
386 if (tool->read == NULL)
387 tool->read = process_event_sample_stub;
388 if (tool->throttle == NULL)
389 tool->throttle = process_event_stub;
390 if (tool->unthrottle == NULL)
391 tool->unthrottle = process_event_stub;
392 if (tool->attr == NULL)
393 tool->attr = process_event_synth_attr_stub;
394 if (tool->event_update == NULL)
395 tool->event_update = process_event_synth_event_update_stub;
396 if (tool->tracing_data == NULL)
397 tool->tracing_data = process_event_synth_tracing_data_stub;
398 if (tool->build_id == NULL)
399 tool->build_id = process_event_op2_stub;
400 if (tool->finished_round == NULL) {
401 if (tool->ordered_events)
402 tool->finished_round = process_finished_round;
403 else
404 tool->finished_round = process_finished_round_stub;
405 }
406 if (tool->id_index == NULL)
407 tool->id_index = process_event_op2_stub;
408 if (tool->auxtrace_info == NULL)
409 tool->auxtrace_info = process_event_op2_stub;
410 if (tool->auxtrace == NULL)
411 tool->auxtrace = process_event_auxtrace_stub;
412 if (tool->auxtrace_error == NULL)
413 tool->auxtrace_error = process_event_op2_stub;
414 if (tool->thread_map == NULL)
415 tool->thread_map = process_event_thread_map_stub;
416 if (tool->cpu_map == NULL)
417 tool->cpu_map = process_event_cpu_map_stub;
418 if (tool->stat_config == NULL)
419 tool->stat_config = process_event_stat_config_stub;
420 if (tool->stat == NULL)
421 tool->stat = process_stat_stub;
422 if (tool->stat_round == NULL)
423 tool->stat_round = process_stat_round_stub;
424 if (tool->time_conv == NULL)
425 tool->time_conv = process_event_op2_stub;
426 if (tool->feature == NULL)
427 tool->feature = process_event_op2_stub;
428 }
429
430 static void swap_sample_id_all(union perf_event *event, void *data)
431 {
432 void *end = (void *) event + event->header.size;
433 int size = end - data;
434
435 BUG_ON(size % sizeof(u64));
436 mem_bswap_64(data, size);
437 }
438
439 static void perf_event__all64_swap(union perf_event *event,
440 bool sample_id_all __maybe_unused)
441 {
442 struct perf_event_header *hdr = &event->header;
443 mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr));
444 }
445
446 static void perf_event__comm_swap(union perf_event *event, bool sample_id_all)
447 {
448 event->comm.pid = bswap_32(event->comm.pid);
449 event->comm.tid = bswap_32(event->comm.tid);
450
451 if (sample_id_all) {
452 void *data = &event->comm.comm;
453
454 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
455 swap_sample_id_all(event, data);
456 }
457 }
458
459 static void perf_event__mmap_swap(union perf_event *event,
460 bool sample_id_all)
461 {
462 event->mmap.pid = bswap_32(event->mmap.pid);
463 event->mmap.tid = bswap_32(event->mmap.tid);
464 event->mmap.start = bswap_64(event->mmap.start);
465 event->mmap.len = bswap_64(event->mmap.len);
466 event->mmap.pgoff = bswap_64(event->mmap.pgoff);
467
468 if (sample_id_all) {
469 void *data = &event->mmap.filename;
470
471 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
472 swap_sample_id_all(event, data);
473 }
474 }
475
476 static void perf_event__mmap2_swap(union perf_event *event,
477 bool sample_id_all)
478 {
479 event->mmap2.pid = bswap_32(event->mmap2.pid);
480 event->mmap2.tid = bswap_32(event->mmap2.tid);
481 event->mmap2.start = bswap_64(event->mmap2.start);
482 event->mmap2.len = bswap_64(event->mmap2.len);
483 event->mmap2.pgoff = bswap_64(event->mmap2.pgoff);
484 event->mmap2.maj = bswap_32(event->mmap2.maj);
485 event->mmap2.min = bswap_32(event->mmap2.min);
486 event->mmap2.ino = bswap_64(event->mmap2.ino);
487
488 if (sample_id_all) {
489 void *data = &event->mmap2.filename;
490
491 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
492 swap_sample_id_all(event, data);
493 }
494 }
495 static void perf_event__task_swap(union perf_event *event, bool sample_id_all)
496 {
497 event->fork.pid = bswap_32(event->fork.pid);
498 event->fork.tid = bswap_32(event->fork.tid);
499 event->fork.ppid = bswap_32(event->fork.ppid);
500 event->fork.ptid = bswap_32(event->fork.ptid);
501 event->fork.time = bswap_64(event->fork.time);
502
503 if (sample_id_all)
504 swap_sample_id_all(event, &event->fork + 1);
505 }
506
507 static void perf_event__read_swap(union perf_event *event, bool sample_id_all)
508 {
509 event->read.pid = bswap_32(event->read.pid);
510 event->read.tid = bswap_32(event->read.tid);
511 event->read.value = bswap_64(event->read.value);
512 event->read.time_enabled = bswap_64(event->read.time_enabled);
513 event->read.time_running = bswap_64(event->read.time_running);
514 event->read.id = bswap_64(event->read.id);
515
516 if (sample_id_all)
517 swap_sample_id_all(event, &event->read + 1);
518 }
519
520 static void perf_event__aux_swap(union perf_event *event, bool sample_id_all)
521 {
522 event->aux.aux_offset = bswap_64(event->aux.aux_offset);
523 event->aux.aux_size = bswap_64(event->aux.aux_size);
524 event->aux.flags = bswap_64(event->aux.flags);
525
526 if (sample_id_all)
527 swap_sample_id_all(event, &event->aux + 1);
528 }
529
530 static void perf_event__itrace_start_swap(union perf_event *event,
531 bool sample_id_all)
532 {
533 event->itrace_start.pid = bswap_32(event->itrace_start.pid);
534 event->itrace_start.tid = bswap_32(event->itrace_start.tid);
535
536 if (sample_id_all)
537 swap_sample_id_all(event, &event->itrace_start + 1);
538 }
539
540 static void perf_event__switch_swap(union perf_event *event, bool sample_id_all)
541 {
542 if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE) {
543 event->context_switch.next_prev_pid =
544 bswap_32(event->context_switch.next_prev_pid);
545 event->context_switch.next_prev_tid =
546 bswap_32(event->context_switch.next_prev_tid);
547 }
548
549 if (sample_id_all)
550 swap_sample_id_all(event, &event->context_switch + 1);
551 }
552
553 static void perf_event__throttle_swap(union perf_event *event,
554 bool sample_id_all)
555 {
556 event->throttle.time = bswap_64(event->throttle.time);
557 event->throttle.id = bswap_64(event->throttle.id);
558 event->throttle.stream_id = bswap_64(event->throttle.stream_id);
559
560 if (sample_id_all)
561 swap_sample_id_all(event, &event->throttle + 1);
562 }
563
564 static u8 revbyte(u8 b)
565 {
566 int rev = (b >> 4) | ((b & 0xf) << 4);
567 rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2);
568 rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1);
569 return (u8) rev;
570 }
571
572 /*
573 * XXX this is hack in attempt to carry flags bitfield
574 * through endian village. ABI says:
575 *
576 * Bit-fields are allocated from right to left (least to most significant)
577 * on little-endian implementations and from left to right (most to least
578 * significant) on big-endian implementations.
579 *
580 * The above seems to be byte specific, so we need to reverse each
581 * byte of the bitfield. 'Internet' also says this might be implementation
582 * specific and we probably need proper fix and carry perf_event_attr
583 * bitfield flags in separate data file FEAT_ section. Thought this seems
584 * to work for now.
585 */
586 static void swap_bitfield(u8 *p, unsigned len)
587 {
588 unsigned i;
589
590 for (i = 0; i < len; i++) {
591 *p = revbyte(*p);
592 p++;
593 }
594 }
595
596 /* exported for swapping attributes in file header */
597 void perf_event__attr_swap(struct perf_event_attr *attr)
598 {
599 attr->type = bswap_32(attr->type);
600 attr->size = bswap_32(attr->size);
601
602 #define bswap_safe(f, n) \
603 (attr->size > (offsetof(struct perf_event_attr, f) + \
604 sizeof(attr->f) * (n)))
605 #define bswap_field(f, sz) \
606 do { \
607 if (bswap_safe(f, 0)) \
608 attr->f = bswap_##sz(attr->f); \
609 } while(0)
610 #define bswap_field_16(f) bswap_field(f, 16)
611 #define bswap_field_32(f) bswap_field(f, 32)
612 #define bswap_field_64(f) bswap_field(f, 64)
613
614 bswap_field_64(config);
615 bswap_field_64(sample_period);
616 bswap_field_64(sample_type);
617 bswap_field_64(read_format);
618 bswap_field_32(wakeup_events);
619 bswap_field_32(bp_type);
620 bswap_field_64(bp_addr);
621 bswap_field_64(bp_len);
622 bswap_field_64(branch_sample_type);
623 bswap_field_64(sample_regs_user);
624 bswap_field_32(sample_stack_user);
625 bswap_field_32(aux_watermark);
626 bswap_field_16(sample_max_stack);
627
628 /*
629 * After read_format are bitfields. Check read_format because
630 * we are unable to use offsetof on bitfield.
631 */
632 if (bswap_safe(read_format, 1))
633 swap_bitfield((u8 *) (&attr->read_format + 1),
634 sizeof(u64));
635 #undef bswap_field_64
636 #undef bswap_field_32
637 #undef bswap_field
638 #undef bswap_safe
639 }
640
641 static void perf_event__hdr_attr_swap(union perf_event *event,
642 bool sample_id_all __maybe_unused)
643 {
644 size_t size;
645
646 perf_event__attr_swap(&event->attr.attr);
647
648 size = event->header.size;
649 size -= (void *)&event->attr.id - (void *)event;
650 mem_bswap_64(event->attr.id, size);
651 }
652
653 static void perf_event__event_update_swap(union perf_event *event,
654 bool sample_id_all __maybe_unused)
655 {
656 event->event_update.type = bswap_64(event->event_update.type);
657 event->event_update.id = bswap_64(event->event_update.id);
658 }
659
660 static void perf_event__event_type_swap(union perf_event *event,
661 bool sample_id_all __maybe_unused)
662 {
663 event->event_type.event_type.event_id =
664 bswap_64(event->event_type.event_type.event_id);
665 }
666
667 static void perf_event__tracing_data_swap(union perf_event *event,
668 bool sample_id_all __maybe_unused)
669 {
670 event->tracing_data.size = bswap_32(event->tracing_data.size);
671 }
672
673 static void perf_event__auxtrace_info_swap(union perf_event *event,
674 bool sample_id_all __maybe_unused)
675 {
676 size_t size;
677
678 event->auxtrace_info.type = bswap_32(event->auxtrace_info.type);
679
680 size = event->header.size;
681 size -= (void *)&event->auxtrace_info.priv - (void *)event;
682 mem_bswap_64(event->auxtrace_info.priv, size);
683 }
684
685 static void perf_event__auxtrace_swap(union perf_event *event,
686 bool sample_id_all __maybe_unused)
687 {
688 event->auxtrace.size = bswap_64(event->auxtrace.size);
689 event->auxtrace.offset = bswap_64(event->auxtrace.offset);
690 event->auxtrace.reference = bswap_64(event->auxtrace.reference);
691 event->auxtrace.idx = bswap_32(event->auxtrace.idx);
692 event->auxtrace.tid = bswap_32(event->auxtrace.tid);
693 event->auxtrace.cpu = bswap_32(event->auxtrace.cpu);
694 }
695
696 static void perf_event__auxtrace_error_swap(union perf_event *event,
697 bool sample_id_all __maybe_unused)
698 {
699 event->auxtrace_error.type = bswap_32(event->auxtrace_error.type);
700 event->auxtrace_error.code = bswap_32(event->auxtrace_error.code);
701 event->auxtrace_error.cpu = bswap_32(event->auxtrace_error.cpu);
702 event->auxtrace_error.pid = bswap_32(event->auxtrace_error.pid);
703 event->auxtrace_error.tid = bswap_32(event->auxtrace_error.tid);
704 event->auxtrace_error.ip = bswap_64(event->auxtrace_error.ip);
705 }
706
707 static void perf_event__thread_map_swap(union perf_event *event,
708 bool sample_id_all __maybe_unused)
709 {
710 unsigned i;
711
712 event->thread_map.nr = bswap_64(event->thread_map.nr);
713
714 for (i = 0; i < event->thread_map.nr; i++)
715 event->thread_map.entries[i].pid = bswap_64(event->thread_map.entries[i].pid);
716 }
717
718 static void perf_event__cpu_map_swap(union perf_event *event,
719 bool sample_id_all __maybe_unused)
720 {
721 struct cpu_map_data *data = &event->cpu_map.data;
722 struct cpu_map_entries *cpus;
723 struct cpu_map_mask *mask;
724 unsigned i;
725
726 data->type = bswap_64(data->type);
727
728 switch (data->type) {
729 case PERF_CPU_MAP__CPUS:
730 cpus = (struct cpu_map_entries *)data->data;
731
732 cpus->nr = bswap_16(cpus->nr);
733
734 for (i = 0; i < cpus->nr; i++)
735 cpus->cpu[i] = bswap_16(cpus->cpu[i]);
736 break;
737 case PERF_CPU_MAP__MASK:
738 mask = (struct cpu_map_mask *) data->data;
739
740 mask->nr = bswap_16(mask->nr);
741 mask->long_size = bswap_16(mask->long_size);
742
743 switch (mask->long_size) {
744 case 4: mem_bswap_32(&mask->mask, mask->nr); break;
745 case 8: mem_bswap_64(&mask->mask, mask->nr); break;
746 default:
747 pr_err("cpu_map swap: unsupported long size\n");
748 }
749 default:
750 break;
751 }
752 }
753
754 static void perf_event__stat_config_swap(union perf_event *event,
755 bool sample_id_all __maybe_unused)
756 {
757 u64 size;
758
759 size = event->stat_config.nr * sizeof(event->stat_config.data[0]);
760 size += 1; /* nr item itself */
761 mem_bswap_64(&event->stat_config.nr, size);
762 }
763
764 static void perf_event__stat_swap(union perf_event *event,
765 bool sample_id_all __maybe_unused)
766 {
767 event->stat.id = bswap_64(event->stat.id);
768 event->stat.thread = bswap_32(event->stat.thread);
769 event->stat.cpu = bswap_32(event->stat.cpu);
770 event->stat.val = bswap_64(event->stat.val);
771 event->stat.ena = bswap_64(event->stat.ena);
772 event->stat.run = bswap_64(event->stat.run);
773 }
774
775 static void perf_event__stat_round_swap(union perf_event *event,
776 bool sample_id_all __maybe_unused)
777 {
778 event->stat_round.type = bswap_64(event->stat_round.type);
779 event->stat_round.time = bswap_64(event->stat_round.time);
780 }
781
782 typedef void (*perf_event__swap_op)(union perf_event *event,
783 bool sample_id_all);
784
785 static perf_event__swap_op perf_event__swap_ops[] = {
786 [PERF_RECORD_MMAP] = perf_event__mmap_swap,
787 [PERF_RECORD_MMAP2] = perf_event__mmap2_swap,
788 [PERF_RECORD_COMM] = perf_event__comm_swap,
789 [PERF_RECORD_FORK] = perf_event__task_swap,
790 [PERF_RECORD_EXIT] = perf_event__task_swap,
791 [PERF_RECORD_LOST] = perf_event__all64_swap,
792 [PERF_RECORD_READ] = perf_event__read_swap,
793 [PERF_RECORD_THROTTLE] = perf_event__throttle_swap,
794 [PERF_RECORD_UNTHROTTLE] = perf_event__throttle_swap,
795 [PERF_RECORD_SAMPLE] = perf_event__all64_swap,
796 [PERF_RECORD_AUX] = perf_event__aux_swap,
797 [PERF_RECORD_ITRACE_START] = perf_event__itrace_start_swap,
798 [PERF_RECORD_LOST_SAMPLES] = perf_event__all64_swap,
799 [PERF_RECORD_SWITCH] = perf_event__switch_swap,
800 [PERF_RECORD_SWITCH_CPU_WIDE] = perf_event__switch_swap,
801 [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap,
802 [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap,
803 [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap,
804 [PERF_RECORD_HEADER_BUILD_ID] = NULL,
805 [PERF_RECORD_ID_INDEX] = perf_event__all64_swap,
806 [PERF_RECORD_AUXTRACE_INFO] = perf_event__auxtrace_info_swap,
807 [PERF_RECORD_AUXTRACE] = perf_event__auxtrace_swap,
808 [PERF_RECORD_AUXTRACE_ERROR] = perf_event__auxtrace_error_swap,
809 [PERF_RECORD_THREAD_MAP] = perf_event__thread_map_swap,
810 [PERF_RECORD_CPU_MAP] = perf_event__cpu_map_swap,
811 [PERF_RECORD_STAT_CONFIG] = perf_event__stat_config_swap,
812 [PERF_RECORD_STAT] = perf_event__stat_swap,
813 [PERF_RECORD_STAT_ROUND] = perf_event__stat_round_swap,
814 [PERF_RECORD_EVENT_UPDATE] = perf_event__event_update_swap,
815 [PERF_RECORD_TIME_CONV] = perf_event__all64_swap,
816 [PERF_RECORD_HEADER_MAX] = NULL,
817 };
818
819 /*
820 * When perf record finishes a pass on every buffers, it records this pseudo
821 * event.
822 * We record the max timestamp t found in the pass n.
823 * Assuming these timestamps are monotonic across cpus, we know that if
824 * a buffer still has events with timestamps below t, they will be all
825 * available and then read in the pass n + 1.
826 * Hence when we start to read the pass n + 2, we can safely flush every
827 * events with timestamps below t.
828 *
829 * ============ PASS n =================
830 * CPU 0 | CPU 1
831 * |
832 * cnt1 timestamps | cnt2 timestamps
833 * 1 | 2
834 * 2 | 3
835 * - | 4 <--- max recorded
836 *
837 * ============ PASS n + 1 ==============
838 * CPU 0 | CPU 1
839 * |
840 * cnt1 timestamps | cnt2 timestamps
841 * 3 | 5
842 * 4 | 6
843 * 5 | 7 <---- max recorded
844 *
845 * Flush every events below timestamp 4
846 *
847 * ============ PASS n + 2 ==============
848 * CPU 0 | CPU 1
849 * |
850 * cnt1 timestamps | cnt2 timestamps
851 * 6 | 8
852 * 7 | 9
853 * - | 10
854 *
855 * Flush every events below timestamp 7
856 * etc...
857 */
858 static int process_finished_round(struct perf_tool *tool __maybe_unused,
859 union perf_event *event __maybe_unused,
860 struct ordered_events *oe)
861 {
862 if (dump_trace)
863 fprintf(stdout, "\n");
864 return ordered_events__flush(oe, OE_FLUSH__ROUND);
865 }
866
867 int perf_session__queue_event(struct perf_session *s, union perf_event *event,
868 u64 timestamp, u64 file_offset)
869 {
870 return ordered_events__queue(&s->ordered_events, event, timestamp, file_offset);
871 }
872
873 static void callchain__lbr_callstack_printf(struct perf_sample *sample)
874 {
875 struct ip_callchain *callchain = sample->callchain;
876 struct branch_stack *lbr_stack = sample->branch_stack;
877 u64 kernel_callchain_nr = callchain->nr;
878 unsigned int i;
879
880 for (i = 0; i < kernel_callchain_nr; i++) {
881 if (callchain->ips[i] == PERF_CONTEXT_USER)
882 break;
883 }
884
885 if ((i != kernel_callchain_nr) && lbr_stack->nr) {
886 u64 total_nr;
887 /*
888 * LBR callstack can only get user call chain,
889 * i is kernel call chain number,
890 * 1 is PERF_CONTEXT_USER.
891 *
892 * The user call chain is stored in LBR registers.
893 * LBR are pair registers. The caller is stored
894 * in "from" register, while the callee is stored
895 * in "to" register.
896 * For example, there is a call stack
897 * "A"->"B"->"C"->"D".
898 * The LBR registers will recorde like
899 * "C"->"D", "B"->"C", "A"->"B".
900 * So only the first "to" register and all "from"
901 * registers are needed to construct the whole stack.
902 */
903 total_nr = i + 1 + lbr_stack->nr + 1;
904 kernel_callchain_nr = i + 1;
905
906 printf("... LBR call chain: nr:%" PRIu64 "\n", total_nr);
907
908 for (i = 0; i < kernel_callchain_nr; i++)
909 printf("..... %2d: %016" PRIx64 "\n",
910 i, callchain->ips[i]);
911
912 printf("..... %2d: %016" PRIx64 "\n",
913 (int)(kernel_callchain_nr), lbr_stack->entries[0].to);
914 for (i = 0; i < lbr_stack->nr; i++)
915 printf("..... %2d: %016" PRIx64 "\n",
916 (int)(i + kernel_callchain_nr + 1), lbr_stack->entries[i].from);
917 }
918 }
919
920 static void callchain__printf(struct perf_evsel *evsel,
921 struct perf_sample *sample)
922 {
923 unsigned int i;
924 struct ip_callchain *callchain = sample->callchain;
925
926 if (perf_evsel__has_branch_callstack(evsel))
927 callchain__lbr_callstack_printf(sample);
928
929 printf("... FP chain: nr:%" PRIu64 "\n", callchain->nr);
930
931 for (i = 0; i < callchain->nr; i++)
932 printf("..... %2d: %016" PRIx64 "\n",
933 i, callchain->ips[i]);
934 }
935
936 static void branch_stack__printf(struct perf_sample *sample)
937 {
938 uint64_t i;
939
940 printf("... branch stack: nr:%" PRIu64 "\n", sample->branch_stack->nr);
941
942 for (i = 0; i < sample->branch_stack->nr; i++) {
943 struct branch_entry *e = &sample->branch_stack->entries[i];
944
945 printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 " %hu cycles %s%s%s%s %x\n",
946 i, e->from, e->to,
947 (unsigned short)e->flags.cycles,
948 e->flags.mispred ? "M" : " ",
949 e->flags.predicted ? "P" : " ",
950 e->flags.abort ? "A" : " ",
951 e->flags.in_tx ? "T" : " ",
952 (unsigned)e->flags.reserved);
953 }
954 }
955
956 static void regs_dump__printf(u64 mask, u64 *regs)
957 {
958 unsigned rid, i = 0;
959
960 for_each_set_bit(rid, (unsigned long *) &mask, sizeof(mask) * 8) {
961 u64 val = regs[i++];
962
963 printf(".... %-5s 0x%" PRIx64 "\n",
964 perf_reg_name(rid), val);
965 }
966 }
967
968 static const char *regs_abi[] = {
969 [PERF_SAMPLE_REGS_ABI_NONE] = "none",
970 [PERF_SAMPLE_REGS_ABI_32] = "32-bit",
971 [PERF_SAMPLE_REGS_ABI_64] = "64-bit",
972 };
973
974 static inline const char *regs_dump_abi(struct regs_dump *d)
975 {
976 if (d->abi > PERF_SAMPLE_REGS_ABI_64)
977 return "unknown";
978
979 return regs_abi[d->abi];
980 }
981
982 static void regs__printf(const char *type, struct regs_dump *regs)
983 {
984 u64 mask = regs->mask;
985
986 printf("... %s regs: mask 0x%" PRIx64 " ABI %s\n",
987 type,
988 mask,
989 regs_dump_abi(regs));
990
991 regs_dump__printf(mask, regs->regs);
992 }
993
994 static void regs_user__printf(struct perf_sample *sample)
995 {
996 struct regs_dump *user_regs = &sample->user_regs;
997
998 if (user_regs->regs)
999 regs__printf("user", user_regs);
1000 }
1001
1002 static void regs_intr__printf(struct perf_sample *sample)
1003 {
1004 struct regs_dump *intr_regs = &sample->intr_regs;
1005
1006 if (intr_regs->regs)
1007 regs__printf("intr", intr_regs);
1008 }
1009
1010 static void stack_user__printf(struct stack_dump *dump)
1011 {
1012 printf("... ustack: size %" PRIu64 ", offset 0x%x\n",
1013 dump->size, dump->offset);
1014 }
1015
1016 static void perf_evlist__print_tstamp(struct perf_evlist *evlist,
1017 union perf_event *event,
1018 struct perf_sample *sample)
1019 {
1020 u64 sample_type = __perf_evlist__combined_sample_type(evlist);
1021
1022 if (event->header.type != PERF_RECORD_SAMPLE &&
1023 !perf_evlist__sample_id_all(evlist)) {
1024 fputs("-1 -1 ", stdout);
1025 return;
1026 }
1027
1028 if ((sample_type & PERF_SAMPLE_CPU))
1029 printf("%u ", sample->cpu);
1030
1031 if (sample_type & PERF_SAMPLE_TIME)
1032 printf("%" PRIu64 " ", sample->time);
1033 }
1034
1035 static void sample_read__printf(struct perf_sample *sample, u64 read_format)
1036 {
1037 printf("... sample_read:\n");
1038
1039 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
1040 printf("...... time enabled %016" PRIx64 "\n",
1041 sample->read.time_enabled);
1042
1043 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
1044 printf("...... time running %016" PRIx64 "\n",
1045 sample->read.time_running);
1046
1047 if (read_format & PERF_FORMAT_GROUP) {
1048 u64 i;
1049
1050 printf(".... group nr %" PRIu64 "\n", sample->read.group.nr);
1051
1052 for (i = 0; i < sample->read.group.nr; i++) {
1053 struct sample_read_value *value;
1054
1055 value = &sample->read.group.values[i];
1056 printf("..... id %016" PRIx64
1057 ", value %016" PRIx64 "\n",
1058 value->id, value->value);
1059 }
1060 } else
1061 printf("..... id %016" PRIx64 ", value %016" PRIx64 "\n",
1062 sample->read.one.id, sample->read.one.value);
1063 }
1064
1065 static void dump_event(struct perf_evlist *evlist, union perf_event *event,
1066 u64 file_offset, struct perf_sample *sample)
1067 {
1068 if (!dump_trace)
1069 return;
1070
1071 printf("\n%#" PRIx64 " [%#x]: event: %d\n",
1072 file_offset, event->header.size, event->header.type);
1073
1074 trace_event(event);
1075
1076 if (sample)
1077 perf_evlist__print_tstamp(evlist, event, sample);
1078
1079 printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset,
1080 event->header.size, perf_event__name(event->header.type));
1081 }
1082
1083 static void dump_sample(struct perf_evsel *evsel, union perf_event *event,
1084 struct perf_sample *sample)
1085 {
1086 u64 sample_type;
1087
1088 if (!dump_trace)
1089 return;
1090
1091 printf("(IP, 0x%x): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n",
1092 event->header.misc, sample->pid, sample->tid, sample->ip,
1093 sample->period, sample->addr);
1094
1095 sample_type = evsel->attr.sample_type;
1096
1097 if (sample_type & PERF_SAMPLE_CALLCHAIN)
1098 callchain__printf(evsel, sample);
1099
1100 if ((sample_type & PERF_SAMPLE_BRANCH_STACK) && !perf_evsel__has_branch_callstack(evsel))
1101 branch_stack__printf(sample);
1102
1103 if (sample_type & PERF_SAMPLE_REGS_USER)
1104 regs_user__printf(sample);
1105
1106 if (sample_type & PERF_SAMPLE_REGS_INTR)
1107 regs_intr__printf(sample);
1108
1109 if (sample_type & PERF_SAMPLE_STACK_USER)
1110 stack_user__printf(&sample->user_stack);
1111
1112 if (sample_type & PERF_SAMPLE_WEIGHT)
1113 printf("... weight: %" PRIu64 "\n", sample->weight);
1114
1115 if (sample_type & PERF_SAMPLE_DATA_SRC)
1116 printf(" . data_src: 0x%"PRIx64"\n", sample->data_src);
1117
1118 if (sample_type & PERF_SAMPLE_PHYS_ADDR)
1119 printf(" .. phys_addr: 0x%"PRIx64"\n", sample->phys_addr);
1120
1121 if (sample_type & PERF_SAMPLE_TRANSACTION)
1122 printf("... transaction: %" PRIx64 "\n", sample->transaction);
1123
1124 if (sample_type & PERF_SAMPLE_READ)
1125 sample_read__printf(sample, evsel->attr.read_format);
1126 }
1127
1128 static void dump_read(struct perf_evsel *evsel, union perf_event *event)
1129 {
1130 struct read_event *read_event = &event->read;
1131 u64 read_format;
1132
1133 if (!dump_trace)
1134 return;
1135
1136 printf(": %d %d %s %" PRIu64 "\n", event->read.pid, event->read.tid,
1137 evsel ? perf_evsel__name(evsel) : "FAIL",
1138 event->read.value);
1139
1140 read_format = evsel->attr.read_format;
1141
1142 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
1143 printf("... time enabled : %" PRIu64 "\n", read_event->time_enabled);
1144
1145 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
1146 printf("... time running : %" PRIu64 "\n", read_event->time_running);
1147
1148 if (read_format & PERF_FORMAT_ID)
1149 printf("... id : %" PRIu64 "\n", read_event->id);
1150 }
1151
1152 static struct machine *machines__find_for_cpumode(struct machines *machines,
1153 union perf_event *event,
1154 struct perf_sample *sample)
1155 {
1156 struct machine *machine;
1157
1158 if (perf_guest &&
1159 ((sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL) ||
1160 (sample->cpumode == PERF_RECORD_MISC_GUEST_USER))) {
1161 u32 pid;
1162
1163 if (event->header.type == PERF_RECORD_MMAP
1164 || event->header.type == PERF_RECORD_MMAP2)
1165 pid = event->mmap.pid;
1166 else
1167 pid = sample->pid;
1168
1169 machine = machines__find(machines, pid);
1170 if (!machine)
1171 machine = machines__findnew(machines, DEFAULT_GUEST_KERNEL_ID);
1172 return machine;
1173 }
1174
1175 return &machines->host;
1176 }
1177
1178 static int deliver_sample_value(struct perf_evlist *evlist,
1179 struct perf_tool *tool,
1180 union perf_event *event,
1181 struct perf_sample *sample,
1182 struct sample_read_value *v,
1183 struct machine *machine)
1184 {
1185 struct perf_sample_id *sid = perf_evlist__id2sid(evlist, v->id);
1186
1187 if (sid) {
1188 sample->id = v->id;
1189 sample->period = v->value - sid->period;
1190 sid->period = v->value;
1191 }
1192
1193 if (!sid || sid->evsel == NULL) {
1194 ++evlist->stats.nr_unknown_id;
1195 return 0;
1196 }
1197
1198 return tool->sample(tool, event, sample, sid->evsel, machine);
1199 }
1200
1201 static int deliver_sample_group(struct perf_evlist *evlist,
1202 struct perf_tool *tool,
1203 union perf_event *event,
1204 struct perf_sample *sample,
1205 struct machine *machine)
1206 {
1207 int ret = -EINVAL;
1208 u64 i;
1209
1210 for (i = 0; i < sample->read.group.nr; i++) {
1211 ret = deliver_sample_value(evlist, tool, event, sample,
1212 &sample->read.group.values[i],
1213 machine);
1214 if (ret)
1215 break;
1216 }
1217
1218 return ret;
1219 }
1220
1221 static int
1222 perf_evlist__deliver_sample(struct perf_evlist *evlist,
1223 struct perf_tool *tool,
1224 union perf_event *event,
1225 struct perf_sample *sample,
1226 struct perf_evsel *evsel,
1227 struct machine *machine)
1228 {
1229 /* We know evsel != NULL. */
1230 u64 sample_type = evsel->attr.sample_type;
1231 u64 read_format = evsel->attr.read_format;
1232
1233 /* Standard sample delivery. */
1234 if (!(sample_type & PERF_SAMPLE_READ))
1235 return tool->sample(tool, event, sample, evsel, machine);
1236
1237 /* For PERF_SAMPLE_READ we have either single or group mode. */
1238 if (read_format & PERF_FORMAT_GROUP)
1239 return deliver_sample_group(evlist, tool, event, sample,
1240 machine);
1241 else
1242 return deliver_sample_value(evlist, tool, event, sample,
1243 &sample->read.one, machine);
1244 }
1245
1246 static int machines__deliver_event(struct machines *machines,
1247 struct perf_evlist *evlist,
1248 union perf_event *event,
1249 struct perf_sample *sample,
1250 struct perf_tool *tool, u64 file_offset)
1251 {
1252 struct perf_evsel *evsel;
1253 struct machine *machine;
1254
1255 dump_event(evlist, event, file_offset, sample);
1256
1257 evsel = perf_evlist__id2evsel(evlist, sample->id);
1258
1259 machine = machines__find_for_cpumode(machines, event, sample);
1260
1261 switch (event->header.type) {
1262 case PERF_RECORD_SAMPLE:
1263 if (evsel == NULL) {
1264 ++evlist->stats.nr_unknown_id;
1265 return 0;
1266 }
1267 dump_sample(evsel, event, sample);
1268 if (machine == NULL) {
1269 ++evlist->stats.nr_unprocessable_samples;
1270 return 0;
1271 }
1272 return perf_evlist__deliver_sample(evlist, tool, event, sample, evsel, machine);
1273 case PERF_RECORD_MMAP:
1274 return tool->mmap(tool, event, sample, machine);
1275 case PERF_RECORD_MMAP2:
1276 if (event->header.misc & PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT)
1277 ++evlist->stats.nr_proc_map_timeout;
1278 return tool->mmap2(tool, event, sample, machine);
1279 case PERF_RECORD_COMM:
1280 return tool->comm(tool, event, sample, machine);
1281 case PERF_RECORD_NAMESPACES:
1282 return tool->namespaces(tool, event, sample, machine);
1283 case PERF_RECORD_FORK:
1284 return tool->fork(tool, event, sample, machine);
1285 case PERF_RECORD_EXIT:
1286 return tool->exit(tool, event, sample, machine);
1287 case PERF_RECORD_LOST:
1288 if (tool->lost == perf_event__process_lost)
1289 evlist->stats.total_lost += event->lost.lost;
1290 return tool->lost(tool, event, sample, machine);
1291 case PERF_RECORD_LOST_SAMPLES:
1292 if (tool->lost_samples == perf_event__process_lost_samples)
1293 evlist->stats.total_lost_samples += event->lost_samples.lost;
1294 return tool->lost_samples(tool, event, sample, machine);
1295 case PERF_RECORD_READ:
1296 dump_read(evsel, event);
1297 return tool->read(tool, event, sample, evsel, machine);
1298 case PERF_RECORD_THROTTLE:
1299 return tool->throttle(tool, event, sample, machine);
1300 case PERF_RECORD_UNTHROTTLE:
1301 return tool->unthrottle(tool, event, sample, machine);
1302 case PERF_RECORD_AUX:
1303 if (tool->aux == perf_event__process_aux) {
1304 if (event->aux.flags & PERF_AUX_FLAG_TRUNCATED)
1305 evlist->stats.total_aux_lost += 1;
1306 if (event->aux.flags & PERF_AUX_FLAG_PARTIAL)
1307 evlist->stats.total_aux_partial += 1;
1308 }
1309 return tool->aux(tool, event, sample, machine);
1310 case PERF_RECORD_ITRACE_START:
1311 return tool->itrace_start(tool, event, sample, machine);
1312 case PERF_RECORD_SWITCH:
1313 case PERF_RECORD_SWITCH_CPU_WIDE:
1314 return tool->context_switch(tool, event, sample, machine);
1315 default:
1316 ++evlist->stats.nr_unknown_events;
1317 return -1;
1318 }
1319 }
1320
1321 static int perf_session__deliver_event(struct perf_session *session,
1322 union perf_event *event,
1323 struct perf_tool *tool,
1324 u64 file_offset)
1325 {
1326 struct perf_sample sample;
1327 int ret;
1328
1329 ret = perf_evlist__parse_sample(session->evlist, event, &sample);
1330 if (ret) {
1331 pr_err("Can't parse sample, err = %d\n", ret);
1332 return ret;
1333 }
1334
1335 ret = auxtrace__process_event(session, event, &sample, tool);
1336 if (ret < 0)
1337 return ret;
1338 if (ret > 0)
1339 return 0;
1340
1341 return machines__deliver_event(&session->machines, session->evlist,
1342 event, &sample, tool, file_offset);
1343 }
1344
1345 static s64 perf_session__process_user_event(struct perf_session *session,
1346 union perf_event *event,
1347 u64 file_offset)
1348 {
1349 struct ordered_events *oe = &session->ordered_events;
1350 struct perf_tool *tool = session->tool;
1351 struct perf_sample sample = { .time = 0, };
1352 int fd = perf_data__fd(session->data);
1353 int err;
1354
1355 dump_event(session->evlist, event, file_offset, &sample);
1356
1357 /* These events are processed right away */
1358 switch (event->header.type) {
1359 case PERF_RECORD_HEADER_ATTR:
1360 err = tool->attr(tool, event, &session->evlist);
1361 if (err == 0) {
1362 perf_session__set_id_hdr_size(session);
1363 perf_session__set_comm_exec(session);
1364 }
1365 return err;
1366 case PERF_RECORD_EVENT_UPDATE:
1367 return tool->event_update(tool, event, &session->evlist);
1368 case PERF_RECORD_HEADER_EVENT_TYPE:
1369 /*
1370 * Depreceated, but we need to handle it for sake
1371 * of old data files create in pipe mode.
1372 */
1373 return 0;
1374 case PERF_RECORD_HEADER_TRACING_DATA:
1375 /* setup for reading amidst mmap */
1376 lseek(fd, file_offset, SEEK_SET);
1377 return tool->tracing_data(tool, event, session);
1378 case PERF_RECORD_HEADER_BUILD_ID:
1379 return tool->build_id(tool, event, session);
1380 case PERF_RECORD_FINISHED_ROUND:
1381 return tool->finished_round(tool, event, oe);
1382 case PERF_RECORD_ID_INDEX:
1383 return tool->id_index(tool, event, session);
1384 case PERF_RECORD_AUXTRACE_INFO:
1385 return tool->auxtrace_info(tool, event, session);
1386 case PERF_RECORD_AUXTRACE:
1387 /* setup for reading amidst mmap */
1388 lseek(fd, file_offset + event->header.size, SEEK_SET);
1389 return tool->auxtrace(tool, event, session);
1390 case PERF_RECORD_AUXTRACE_ERROR:
1391 perf_session__auxtrace_error_inc(session, event);
1392 return tool->auxtrace_error(tool, event, session);
1393 case PERF_RECORD_THREAD_MAP:
1394 return tool->thread_map(tool, event, session);
1395 case PERF_RECORD_CPU_MAP:
1396 return tool->cpu_map(tool, event, session);
1397 case PERF_RECORD_STAT_CONFIG:
1398 return tool->stat_config(tool, event, session);
1399 case PERF_RECORD_STAT:
1400 return tool->stat(tool, event, session);
1401 case PERF_RECORD_STAT_ROUND:
1402 return tool->stat_round(tool, event, session);
1403 case PERF_RECORD_TIME_CONV:
1404 session->time_conv = event->time_conv;
1405 return tool->time_conv(tool, event, session);
1406 case PERF_RECORD_HEADER_FEATURE:
1407 return tool->feature(tool, event, session);
1408 default:
1409 return -EINVAL;
1410 }
1411 }
1412
1413 int perf_session__deliver_synth_event(struct perf_session *session,
1414 union perf_event *event,
1415 struct perf_sample *sample)
1416 {
1417 struct perf_evlist *evlist = session->evlist;
1418 struct perf_tool *tool = session->tool;
1419
1420 events_stats__inc(&evlist->stats, event->header.type);
1421
1422 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
1423 return perf_session__process_user_event(session, event, 0);
1424
1425 return machines__deliver_event(&session->machines, evlist, event, sample, tool, 0);
1426 }
1427
1428 static void event_swap(union perf_event *event, bool sample_id_all)
1429 {
1430 perf_event__swap_op swap;
1431
1432 swap = perf_event__swap_ops[event->header.type];
1433 if (swap)
1434 swap(event, sample_id_all);
1435 }
1436
1437 int perf_session__peek_event(struct perf_session *session, off_t file_offset,
1438 void *buf, size_t buf_sz,
1439 union perf_event **event_ptr,
1440 struct perf_sample *sample)
1441 {
1442 union perf_event *event;
1443 size_t hdr_sz, rest;
1444 int fd;
1445
1446 if (session->one_mmap && !session->header.needs_swap) {
1447 event = file_offset - session->one_mmap_offset +
1448 session->one_mmap_addr;
1449 goto out_parse_sample;
1450 }
1451
1452 if (perf_data__is_pipe(session->data))
1453 return -1;
1454
1455 fd = perf_data__fd(session->data);
1456 hdr_sz = sizeof(struct perf_event_header);
1457
1458 if (buf_sz < hdr_sz)
1459 return -1;
1460
1461 if (lseek(fd, file_offset, SEEK_SET) == (off_t)-1 ||
1462 readn(fd, buf, hdr_sz) != (ssize_t)hdr_sz)
1463 return -1;
1464
1465 event = (union perf_event *)buf;
1466
1467 if (session->header.needs_swap)
1468 perf_event_header__bswap(&event->header);
1469
1470 if (event->header.size < hdr_sz || event->header.size > buf_sz)
1471 return -1;
1472
1473 rest = event->header.size - hdr_sz;
1474
1475 if (readn(fd, buf, rest) != (ssize_t)rest)
1476 return -1;
1477
1478 if (session->header.needs_swap)
1479 event_swap(event, perf_evlist__sample_id_all(session->evlist));
1480
1481 out_parse_sample:
1482
1483 if (sample && event->header.type < PERF_RECORD_USER_TYPE_START &&
1484 perf_evlist__parse_sample(session->evlist, event, sample))
1485 return -1;
1486
1487 *event_ptr = event;
1488
1489 return 0;
1490 }
1491
1492 static s64 perf_session__process_event(struct perf_session *session,
1493 union perf_event *event, u64 file_offset)
1494 {
1495 struct perf_evlist *evlist = session->evlist;
1496 struct perf_tool *tool = session->tool;
1497 int ret;
1498
1499 if (session->header.needs_swap)
1500 event_swap(event, perf_evlist__sample_id_all(evlist));
1501
1502 if (event->header.type >= PERF_RECORD_HEADER_MAX)
1503 return -EINVAL;
1504
1505 events_stats__inc(&evlist->stats, event->header.type);
1506
1507 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
1508 return perf_session__process_user_event(session, event, file_offset);
1509
1510 if (tool->ordered_events) {
1511 u64 timestamp = -1ULL;
1512
1513 ret = perf_evlist__parse_sample_timestamp(evlist, event, &timestamp);
1514 if (ret && ret != -1)
1515 return ret;
1516
1517 ret = perf_session__queue_event(session, event, timestamp, file_offset);
1518 if (ret != -ETIME)
1519 return ret;
1520 }
1521
1522 return perf_session__deliver_event(session, event, tool, file_offset);
1523 }
1524
1525 void perf_event_header__bswap(struct perf_event_header *hdr)
1526 {
1527 hdr->type = bswap_32(hdr->type);
1528 hdr->misc = bswap_16(hdr->misc);
1529 hdr->size = bswap_16(hdr->size);
1530 }
1531
1532 struct thread *perf_session__findnew(struct perf_session *session, pid_t pid)
1533 {
1534 return machine__findnew_thread(&session->machines.host, -1, pid);
1535 }
1536
1537 int perf_session__register_idle_thread(struct perf_session *session)
1538 {
1539 struct thread *thread;
1540 int err = 0;
1541
1542 thread = machine__findnew_thread(&session->machines.host, 0, 0);
1543 if (thread == NULL || thread__set_comm(thread, "swapper", 0)) {
1544 pr_err("problem inserting idle task.\n");
1545 err = -1;
1546 }
1547
1548 if (thread == NULL || thread__set_namespaces(thread, 0, NULL)) {
1549 pr_err("problem inserting idle task.\n");
1550 err = -1;
1551 }
1552
1553 /* machine__findnew_thread() got the thread, so put it */
1554 thread__put(thread);
1555 return err;
1556 }
1557
1558 static void
1559 perf_session__warn_order(const struct perf_session *session)
1560 {
1561 const struct ordered_events *oe = &session->ordered_events;
1562 struct perf_evsel *evsel;
1563 bool should_warn = true;
1564
1565 evlist__for_each_entry(session->evlist, evsel) {
1566 if (evsel->attr.write_backward)
1567 should_warn = false;
1568 }
1569
1570 if (!should_warn)
1571 return;
1572 if (oe->nr_unordered_events != 0)
1573 ui__warning("%u out of order events recorded.\n", oe->nr_unordered_events);
1574 }
1575
1576 static void perf_session__warn_about_errors(const struct perf_session *session)
1577 {
1578 const struct events_stats *stats = &session->evlist->stats;
1579
1580 if (session->tool->lost == perf_event__process_lost &&
1581 stats->nr_events[PERF_RECORD_LOST] != 0) {
1582 ui__warning("Processed %d events and lost %d chunks!\n\n"
1583 "Check IO/CPU overload!\n\n",
1584 stats->nr_events[0],
1585 stats->nr_events[PERF_RECORD_LOST]);
1586 }
1587
1588 if (session->tool->lost_samples == perf_event__process_lost_samples) {
1589 double drop_rate;
1590
1591 drop_rate = (double)stats->total_lost_samples /
1592 (double) (stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples);
1593 if (drop_rate > 0.05) {
1594 ui__warning("Processed %" PRIu64 " samples and lost %3.2f%% samples!\n\n",
1595 stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples,
1596 drop_rate * 100.0);
1597 }
1598 }
1599
1600 if (session->tool->aux == perf_event__process_aux &&
1601 stats->total_aux_lost != 0) {
1602 ui__warning("AUX data lost %" PRIu64 " times out of %u!\n\n",
1603 stats->total_aux_lost,
1604 stats->nr_events[PERF_RECORD_AUX]);
1605 }
1606
1607 if (session->tool->aux == perf_event__process_aux &&
1608 stats->total_aux_partial != 0) {
1609 bool vmm_exclusive = false;
1610
1611 (void)sysfs__read_bool("module/kvm_intel/parameters/vmm_exclusive",
1612 &vmm_exclusive);
1613
1614 ui__warning("AUX data had gaps in it %" PRIu64 " times out of %u!\n\n"
1615 "Are you running a KVM guest in the background?%s\n\n",
1616 stats->total_aux_partial,
1617 stats->nr_events[PERF_RECORD_AUX],
1618 vmm_exclusive ?
1619 "\nReloading kvm_intel module with vmm_exclusive=0\n"
1620 "will reduce the gaps to only guest's timeslices." :
1621 "");
1622 }
1623
1624 if (stats->nr_unknown_events != 0) {
1625 ui__warning("Found %u unknown events!\n\n"
1626 "Is this an older tool processing a perf.data "
1627 "file generated by a more recent tool?\n\n"
1628 "If that is not the case, consider "
1629 "reporting to linux-kernel@vger.kernel.org.\n\n",
1630 stats->nr_unknown_events);
1631 }
1632
1633 if (stats->nr_unknown_id != 0) {
1634 ui__warning("%u samples with id not present in the header\n",
1635 stats->nr_unknown_id);
1636 }
1637
1638 if (stats->nr_invalid_chains != 0) {
1639 ui__warning("Found invalid callchains!\n\n"
1640 "%u out of %u events were discarded for this reason.\n\n"
1641 "Consider reporting to linux-kernel@vger.kernel.org.\n\n",
1642 stats->nr_invalid_chains,
1643 stats->nr_events[PERF_RECORD_SAMPLE]);
1644 }
1645
1646 if (stats->nr_unprocessable_samples != 0) {
1647 ui__warning("%u unprocessable samples recorded.\n"
1648 "Do you have a KVM guest running and not using 'perf kvm'?\n",
1649 stats->nr_unprocessable_samples);
1650 }
1651
1652 perf_session__warn_order(session);
1653
1654 events_stats__auxtrace_error_warn(stats);
1655
1656 if (stats->nr_proc_map_timeout != 0) {
1657 ui__warning("%d map information files for pre-existing threads were\n"
1658 "not processed, if there are samples for addresses they\n"
1659 "will not be resolved, you may find out which are these\n"
1660 "threads by running with -v and redirecting the output\n"
1661 "to a file.\n"
1662 "The time limit to process proc map is too short?\n"
1663 "Increase it by --proc-map-timeout\n",
1664 stats->nr_proc_map_timeout);
1665 }
1666 }
1667
1668 static int perf_session__flush_thread_stack(struct thread *thread,
1669 void *p __maybe_unused)
1670 {
1671 return thread_stack__flush(thread);
1672 }
1673
1674 static int perf_session__flush_thread_stacks(struct perf_session *session)
1675 {
1676 return machines__for_each_thread(&session->machines,
1677 perf_session__flush_thread_stack,
1678 NULL);
1679 }
1680
1681 volatile int session_done;
1682
1683 static int __perf_session__process_pipe_events(struct perf_session *session)
1684 {
1685 struct ordered_events *oe = &session->ordered_events;
1686 struct perf_tool *tool = session->tool;
1687 int fd = perf_data__fd(session->data);
1688 union perf_event *event;
1689 uint32_t size, cur_size = 0;
1690 void *buf = NULL;
1691 s64 skip = 0;
1692 u64 head;
1693 ssize_t err;
1694 void *p;
1695
1696 perf_tool__fill_defaults(tool);
1697
1698 head = 0;
1699 cur_size = sizeof(union perf_event);
1700
1701 buf = malloc(cur_size);
1702 if (!buf)
1703 return -errno;
1704 ordered_events__set_copy_on_queue(oe, true);
1705 more:
1706 event = buf;
1707 err = readn(fd, event, sizeof(struct perf_event_header));
1708 if (err <= 0) {
1709 if (err == 0)
1710 goto done;
1711
1712 pr_err("failed to read event header\n");
1713 goto out_err;
1714 }
1715
1716 if (session->header.needs_swap)
1717 perf_event_header__bswap(&event->header);
1718
1719 size = event->header.size;
1720 if (size < sizeof(struct perf_event_header)) {
1721 pr_err("bad event header size\n");
1722 goto out_err;
1723 }
1724
1725 if (size > cur_size) {
1726 void *new = realloc(buf, size);
1727 if (!new) {
1728 pr_err("failed to allocate memory to read event\n");
1729 goto out_err;
1730 }
1731 buf = new;
1732 cur_size = size;
1733 event = buf;
1734 }
1735 p = event;
1736 p += sizeof(struct perf_event_header);
1737
1738 if (size - sizeof(struct perf_event_header)) {
1739 err = readn(fd, p, size - sizeof(struct perf_event_header));
1740 if (err <= 0) {
1741 if (err == 0) {
1742 pr_err("unexpected end of event stream\n");
1743 goto done;
1744 }
1745
1746 pr_err("failed to read event data\n");
1747 goto out_err;
1748 }
1749 }
1750
1751 if ((skip = perf_session__process_event(session, event, head)) < 0) {
1752 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
1753 head, event->header.size, event->header.type);
1754 err = -EINVAL;
1755 goto out_err;
1756 }
1757
1758 head += size;
1759
1760 if (skip > 0)
1761 head += skip;
1762
1763 if (!session_done())
1764 goto more;
1765 done:
1766 /* do the final flush for ordered samples */
1767 err = ordered_events__flush(oe, OE_FLUSH__FINAL);
1768 if (err)
1769 goto out_err;
1770 err = auxtrace__flush_events(session, tool);
1771 if (err)
1772 goto out_err;
1773 err = perf_session__flush_thread_stacks(session);
1774 out_err:
1775 free(buf);
1776 if (!tool->no_warn)
1777 perf_session__warn_about_errors(session);
1778 ordered_events__free(&session->ordered_events);
1779 auxtrace__free_events(session);
1780 return err;
1781 }
1782
1783 static union perf_event *
1784 fetch_mmaped_event(struct perf_session *session,
1785 u64 head, size_t mmap_size, char *buf)
1786 {
1787 union perf_event *event;
1788
1789 /*
1790 * Ensure we have enough space remaining to read
1791 * the size of the event in the headers.
1792 */
1793 if (head + sizeof(event->header) > mmap_size)
1794 return NULL;
1795
1796 event = (union perf_event *)(buf + head);
1797
1798 if (session->header.needs_swap)
1799 perf_event_header__bswap(&event->header);
1800
1801 if (head + event->header.size > mmap_size) {
1802 /* We're not fetching the event so swap back again */
1803 if (session->header.needs_swap)
1804 perf_event_header__bswap(&event->header);
1805 return NULL;
1806 }
1807
1808 return event;
1809 }
1810
1811 /*
1812 * On 64bit we can mmap the data file in one go. No need for tiny mmap
1813 * slices. On 32bit we use 32MB.
1814 */
1815 #if BITS_PER_LONG == 64
1816 #define MMAP_SIZE ULLONG_MAX
1817 #define NUM_MMAPS 1
1818 #else
1819 #define MMAP_SIZE (32 * 1024 * 1024ULL)
1820 #define NUM_MMAPS 128
1821 #endif
1822
1823 static int __perf_session__process_events(struct perf_session *session,
1824 u64 data_offset, u64 data_size,
1825 u64 file_size)
1826 {
1827 struct ordered_events *oe = &session->ordered_events;
1828 struct perf_tool *tool = session->tool;
1829 int fd = perf_data__fd(session->data);
1830 u64 head, page_offset, file_offset, file_pos, size;
1831 int err, mmap_prot, mmap_flags, map_idx = 0;
1832 size_t mmap_size;
1833 char *buf, *mmaps[NUM_MMAPS];
1834 union perf_event *event;
1835 struct ui_progress prog;
1836 s64 skip;
1837
1838 perf_tool__fill_defaults(tool);
1839
1840 page_offset = page_size * (data_offset / page_size);
1841 file_offset = page_offset;
1842 head = data_offset - page_offset;
1843
1844 if (data_size == 0)
1845 goto out;
1846
1847 if (data_offset + data_size < file_size)
1848 file_size = data_offset + data_size;
1849
1850 ui_progress__init_size(&prog, file_size, "Processing events...");
1851
1852 mmap_size = MMAP_SIZE;
1853 if (mmap_size > file_size) {
1854 mmap_size = file_size;
1855 session->one_mmap = true;
1856 }
1857
1858 memset(mmaps, 0, sizeof(mmaps));
1859
1860 mmap_prot = PROT_READ;
1861 mmap_flags = MAP_SHARED;
1862
1863 if (session->header.needs_swap) {
1864 mmap_prot |= PROT_WRITE;
1865 mmap_flags = MAP_PRIVATE;
1866 }
1867 remap:
1868 buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, fd,
1869 file_offset);
1870 if (buf == MAP_FAILED) {
1871 pr_err("failed to mmap file\n");
1872 err = -errno;
1873 goto out_err;
1874 }
1875 mmaps[map_idx] = buf;
1876 map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1);
1877 file_pos = file_offset + head;
1878 if (session->one_mmap) {
1879 session->one_mmap_addr = buf;
1880 session->one_mmap_offset = file_offset;
1881 }
1882
1883 more:
1884 event = fetch_mmaped_event(session, head, mmap_size, buf);
1885 if (!event) {
1886 if (mmaps[map_idx]) {
1887 munmap(mmaps[map_idx], mmap_size);
1888 mmaps[map_idx] = NULL;
1889 }
1890
1891 page_offset = page_size * (head / page_size);
1892 file_offset += page_offset;
1893 head -= page_offset;
1894 goto remap;
1895 }
1896
1897 size = event->header.size;
1898
1899 if (size < sizeof(struct perf_event_header) ||
1900 (skip = perf_session__process_event(session, event, file_pos)) < 0) {
1901 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
1902 file_offset + head, event->header.size,
1903 event->header.type);
1904 err = -EINVAL;
1905 goto out_err;
1906 }
1907
1908 if (skip)
1909 size += skip;
1910
1911 head += size;
1912 file_pos += size;
1913
1914 ui_progress__update(&prog, size);
1915
1916 if (session_done())
1917 goto out;
1918
1919 if (file_pos < file_size)
1920 goto more;
1921
1922 out:
1923 /* do the final flush for ordered samples */
1924 err = ordered_events__flush(oe, OE_FLUSH__FINAL);
1925 if (err)
1926 goto out_err;
1927 err = auxtrace__flush_events(session, tool);
1928 if (err)
1929 goto out_err;
1930 err = perf_session__flush_thread_stacks(session);
1931 out_err:
1932 ui_progress__finish();
1933 if (!tool->no_warn)
1934 perf_session__warn_about_errors(session);
1935 /*
1936 * We may switching perf.data output, make ordered_events
1937 * reusable.
1938 */
1939 ordered_events__reinit(&session->ordered_events);
1940 auxtrace__free_events(session);
1941 session->one_mmap = false;
1942 return err;
1943 }
1944
1945 int perf_session__process_events(struct perf_session *session)
1946 {
1947 u64 size = perf_data__size(session->data);
1948 int err;
1949
1950 if (perf_session__register_idle_thread(session) < 0)
1951 return -ENOMEM;
1952
1953 if (!perf_data__is_pipe(session->data))
1954 err = __perf_session__process_events(session,
1955 session->header.data_offset,
1956 session->header.data_size, size);
1957 else
1958 err = __perf_session__process_pipe_events(session);
1959
1960 return err;
1961 }
1962
1963 bool perf_session__has_traces(struct perf_session *session, const char *msg)
1964 {
1965 struct perf_evsel *evsel;
1966
1967 evlist__for_each_entry(session->evlist, evsel) {
1968 if (evsel->attr.type == PERF_TYPE_TRACEPOINT)
1969 return true;
1970 }
1971
1972 pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg);
1973 return false;
1974 }
1975
1976 int maps__set_kallsyms_ref_reloc_sym(struct map **maps,
1977 const char *symbol_name, u64 addr)
1978 {
1979 char *bracket;
1980 int i;
1981 struct ref_reloc_sym *ref;
1982
1983 ref = zalloc(sizeof(struct ref_reloc_sym));
1984 if (ref == NULL)
1985 return -ENOMEM;
1986
1987 ref->name = strdup(symbol_name);
1988 if (ref->name == NULL) {
1989 free(ref);
1990 return -ENOMEM;
1991 }
1992
1993 bracket = strchr(ref->name, ']');
1994 if (bracket)
1995 *bracket = '\0';
1996
1997 ref->addr = addr;
1998
1999 for (i = 0; i < MAP__NR_TYPES; ++i) {
2000 struct kmap *kmap = map__kmap(maps[i]);
2001
2002 if (!kmap)
2003 continue;
2004 kmap->ref_reloc_sym = ref;
2005 }
2006
2007 return 0;
2008 }
2009
2010 size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp)
2011 {
2012 return machines__fprintf_dsos(&session->machines, fp);
2013 }
2014
2015 size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp,
2016 bool (skip)(struct dso *dso, int parm), int parm)
2017 {
2018 return machines__fprintf_dsos_buildid(&session->machines, fp, skip, parm);
2019 }
2020
2021 size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp)
2022 {
2023 size_t ret;
2024 const char *msg = "";
2025
2026 if (perf_header__has_feat(&session->header, HEADER_AUXTRACE))
2027 msg = " (excludes AUX area (e.g. instruction trace) decoded / synthesized events)";
2028
2029 ret = fprintf(fp, "\nAggregated stats:%s\n", msg);
2030
2031 ret += events_stats__fprintf(&session->evlist->stats, fp);
2032 return ret;
2033 }
2034
2035 size_t perf_session__fprintf(struct perf_session *session, FILE *fp)
2036 {
2037 /*
2038 * FIXME: Here we have to actually print all the machines in this
2039 * session, not just the host...
2040 */
2041 return machine__fprintf(&session->machines.host, fp);
2042 }
2043
2044 struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session,
2045 unsigned int type)
2046 {
2047 struct perf_evsel *pos;
2048
2049 evlist__for_each_entry(session->evlist, pos) {
2050 if (pos->attr.type == type)
2051 return pos;
2052 }
2053 return NULL;
2054 }
2055
2056 int perf_session__cpu_bitmap(struct perf_session *session,
2057 const char *cpu_list, unsigned long *cpu_bitmap)
2058 {
2059 int i, err = -1;
2060 struct cpu_map *map;
2061
2062 for (i = 0; i < PERF_TYPE_MAX; ++i) {
2063 struct perf_evsel *evsel;
2064
2065 evsel = perf_session__find_first_evtype(session, i);
2066 if (!evsel)
2067 continue;
2068
2069 if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) {
2070 pr_err("File does not contain CPU events. "
2071 "Remove -C option to proceed.\n");
2072 return -1;
2073 }
2074 }
2075
2076 map = cpu_map__new(cpu_list);
2077 if (map == NULL) {
2078 pr_err("Invalid cpu_list\n");
2079 return -1;
2080 }
2081
2082 for (i = 0; i < map->nr; i++) {
2083 int cpu = map->map[i];
2084
2085 if (cpu >= MAX_NR_CPUS) {
2086 pr_err("Requested CPU %d too large. "
2087 "Consider raising MAX_NR_CPUS\n", cpu);
2088 goto out_delete_map;
2089 }
2090
2091 set_bit(cpu, cpu_bitmap);
2092 }
2093
2094 err = 0;
2095
2096 out_delete_map:
2097 cpu_map__put(map);
2098 return err;
2099 }
2100
2101 void perf_session__fprintf_info(struct perf_session *session, FILE *fp,
2102 bool full)
2103 {
2104 if (session == NULL || fp == NULL)
2105 return;
2106
2107 fprintf(fp, "# ========\n");
2108 perf_header__fprintf_info(session, fp, full);
2109 fprintf(fp, "# ========\n#\n");
2110 }
2111
2112
2113 int __perf_session__set_tracepoints_handlers(struct perf_session *session,
2114 const struct perf_evsel_str_handler *assocs,
2115 size_t nr_assocs)
2116 {
2117 struct perf_evsel *evsel;
2118 size_t i;
2119 int err;
2120
2121 for (i = 0; i < nr_assocs; i++) {
2122 /*
2123 * Adding a handler for an event not in the session,
2124 * just ignore it.
2125 */
2126 evsel = perf_evlist__find_tracepoint_by_name(session->evlist, assocs[i].name);
2127 if (evsel == NULL)
2128 continue;
2129
2130 err = -EEXIST;
2131 if (evsel->handler != NULL)
2132 goto out;
2133 evsel->handler = assocs[i].handler;
2134 }
2135
2136 err = 0;
2137 out:
2138 return err;
2139 }
2140
2141 int perf_event__process_id_index(struct perf_tool *tool __maybe_unused,
2142 union perf_event *event,
2143 struct perf_session *session)
2144 {
2145 struct perf_evlist *evlist = session->evlist;
2146 struct id_index_event *ie = &event->id_index;
2147 size_t i, nr, max_nr;
2148
2149 max_nr = (ie->header.size - sizeof(struct id_index_event)) /
2150 sizeof(struct id_index_entry);
2151 nr = ie->nr;
2152 if (nr > max_nr)
2153 return -EINVAL;
2154
2155 if (dump_trace)
2156 fprintf(stdout, " nr: %zu\n", nr);
2157
2158 for (i = 0; i < nr; i++) {
2159 struct id_index_entry *e = &ie->entries[i];
2160 struct perf_sample_id *sid;
2161
2162 if (dump_trace) {
2163 fprintf(stdout, " ... id: %"PRIu64, e->id);
2164 fprintf(stdout, " idx: %"PRIu64, e->idx);
2165 fprintf(stdout, " cpu: %"PRId64, e->cpu);
2166 fprintf(stdout, " tid: %"PRId64"\n", e->tid);
2167 }
2168
2169 sid = perf_evlist__id2sid(evlist, e->id);
2170 if (!sid)
2171 return -ENOENT;
2172 sid->idx = e->idx;
2173 sid->cpu = e->cpu;
2174 sid->tid = e->tid;
2175 }
2176 return 0;
2177 }
2178
2179 int perf_event__synthesize_id_index(struct perf_tool *tool,
2180 perf_event__handler_t process,
2181 struct perf_evlist *evlist,
2182 struct machine *machine)
2183 {
2184 union perf_event *ev;
2185 struct perf_evsel *evsel;
2186 size_t nr = 0, i = 0, sz, max_nr, n;
2187 int err;
2188
2189 pr_debug2("Synthesizing id index\n");
2190
2191 max_nr = (UINT16_MAX - sizeof(struct id_index_event)) /
2192 sizeof(struct id_index_entry);
2193
2194 evlist__for_each_entry(evlist, evsel)
2195 nr += evsel->ids;
2196
2197 n = nr > max_nr ? max_nr : nr;
2198 sz = sizeof(struct id_index_event) + n * sizeof(struct id_index_entry);
2199 ev = zalloc(sz);
2200 if (!ev)
2201 return -ENOMEM;
2202
2203 ev->id_index.header.type = PERF_RECORD_ID_INDEX;
2204 ev->id_index.header.size = sz;
2205 ev->id_index.nr = n;
2206
2207 evlist__for_each_entry(evlist, evsel) {
2208 u32 j;
2209
2210 for (j = 0; j < evsel->ids; j++) {
2211 struct id_index_entry *e;
2212 struct perf_sample_id *sid;
2213
2214 if (i >= n) {
2215 err = process(tool, ev, NULL, machine);
2216 if (err)
2217 goto out_err;
2218 nr -= n;
2219 i = 0;
2220 }
2221
2222 e = &ev->id_index.entries[i++];
2223
2224 e->id = evsel->id[j];
2225
2226 sid = perf_evlist__id2sid(evlist, e->id);
2227 if (!sid) {
2228 free(ev);
2229 return -ENOENT;
2230 }
2231
2232 e->idx = sid->idx;
2233 e->cpu = sid->cpu;
2234 e->tid = sid->tid;
2235 }
2236 }
2237
2238 sz = sizeof(struct id_index_event) + nr * sizeof(struct id_index_entry);
2239 ev->id_index.header.size = sz;
2240 ev->id_index.nr = nr;
2241
2242 err = process(tool, ev, NULL, machine);
2243 out_err:
2244 free(ev);
2245
2246 return err;
2247 }
CRIS linux kernel tree