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mmc: bcm2835: Fix DMA channel leak on probe error
[linux/fpc-iii.git] / tools / perf / util / session.c
blob11086097fc9f88f34ef01f28287b8a687361da4f
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 #include "arch/common.h"
28
29 static int perf_session__deliver_event(struct perf_session *session,
30 union perf_event *event,
31 struct perf_tool *tool,
32 u64 file_offset);
33
34 static int perf_session__open(struct perf_session *session)
35 {
36 struct perf_data *data = session->data;
37
38 if (perf_session__read_header(session) < 0) {
39 pr_err("incompatible file format (rerun with -v to learn more)\n");
40 return -1;
41 }
42
43 if (perf_data__is_pipe(data))
44 return 0;
45
46 if (perf_header__has_feat(&session->header, HEADER_STAT))
47 return 0;
48
49 if (!perf_evlist__valid_sample_type(session->evlist)) {
50 pr_err("non matching sample_type\n");
51 return -1;
52 }
53
54 if (!perf_evlist__valid_sample_id_all(session->evlist)) {
55 pr_err("non matching sample_id_all\n");
56 return -1;
57 }
58
59 if (!perf_evlist__valid_read_format(session->evlist)) {
60 pr_err("non matching read_format\n");
61 return -1;
62 }
63
64 return 0;
65 }
66
67 void perf_session__set_id_hdr_size(struct perf_session *session)
68 {
69 u16 id_hdr_size = perf_evlist__id_hdr_size(session->evlist);
70
71 machines__set_id_hdr_size(&session->machines, id_hdr_size);
72 }
73
74 int perf_session__create_kernel_maps(struct perf_session *session)
75 {
76 int ret = machine__create_kernel_maps(&session->machines.host);
77
78 if (ret >= 0)
79 ret = machines__create_guest_kernel_maps(&session->machines);
80 return ret;
81 }
82
83 static void perf_session__destroy_kernel_maps(struct perf_session *session)
84 {
85 machines__destroy_kernel_maps(&session->machines);
86 }
87
88 static bool perf_session__has_comm_exec(struct perf_session *session)
89 {
90 struct perf_evsel *evsel;
91
92 evlist__for_each_entry(session->evlist, evsel) {
93 if (evsel->attr.comm_exec)
94 return true;
95 }
96
97 return false;
98 }
99
100 static void perf_session__set_comm_exec(struct perf_session *session)
101 {
102 bool comm_exec = perf_session__has_comm_exec(session);
103
104 machines__set_comm_exec(&session->machines, comm_exec);
105 }
106
107 static int ordered_events__deliver_event(struct ordered_events *oe,
108 struct ordered_event *event)
109 {
110 struct perf_session *session = container_of(oe, struct perf_session,
111 ordered_events);
112
113 return perf_session__deliver_event(session, event->event,
114 session->tool, event->file_offset);
115 }
116
117 struct perf_session *perf_session__new(struct perf_data *data,
118 bool repipe, struct perf_tool *tool)
119 {
120 struct perf_session *session = zalloc(sizeof(*session));
121
122 if (!session)
123 goto out;
124
125 session->repipe = repipe;
126 session->tool = tool;
127 INIT_LIST_HEAD(&session->auxtrace_index);
128 machines__init(&session->machines);
129 ordered_events__init(&session->ordered_events, ordered_events__deliver_event);
130
131 if (data) {
132 if (perf_data__open(data))
133 goto out_delete;
134
135 session->data = data;
136
137 if (perf_data__is_read(data)) {
138 if (perf_session__open(session) < 0)
139 goto out_close;
140
141 /*
142 * set session attributes that are present in perf.data
143 * but not in pipe-mode.
144 */
145 if (!data->is_pipe) {
146 perf_session__set_id_hdr_size(session);
147 perf_session__set_comm_exec(session);
148 }
149 }
150 } else {
151 session->machines.host.env = &perf_env;
152 }
153
154 session->machines.host.single_address_space =
155 perf_env__single_address_space(session->machines.host.env);
156
157 if (!data || perf_data__is_write(data)) {
158 /*
159 * In O_RDONLY mode this will be performed when reading the
160 * kernel MMAP event, in perf_event__process_mmap().
161 */
162 if (perf_session__create_kernel_maps(session) < 0)
163 pr_warning("Cannot read kernel map\n");
164 }
165
166 /*
167 * In pipe-mode, evlist is empty until PERF_RECORD_HEADER_ATTR is
168 * processed, so perf_evlist__sample_id_all is not meaningful here.
169 */
170 if ((!data || !data->is_pipe) && tool && tool->ordering_requires_timestamps &&
171 tool->ordered_events && !perf_evlist__sample_id_all(session->evlist)) {
172 dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n");
173 tool->ordered_events = false;
174 }
175
176 return session;
177
178 out_close:
179 perf_data__close(data);
180 out_delete:
181 perf_session__delete(session);
182 out:
183 return NULL;
184 }
185
186 static void perf_session__delete_threads(struct perf_session *session)
187 {
188 machine__delete_threads(&session->machines.host);
189 }
190
191 void perf_session__delete(struct perf_session *session)
192 {
193 if (session == NULL)
194 return;
195 auxtrace__free(session);
196 auxtrace_index__free(&session->auxtrace_index);
197 perf_session__destroy_kernel_maps(session);
198 perf_session__delete_threads(session);
199 perf_env__exit(&session->header.env);
200 machines__exit(&session->machines);
201 if (session->data)
202 perf_data__close(session->data);
203 free(session);
204 }
205
206 static int process_event_synth_tracing_data_stub(struct perf_tool *tool
207 __maybe_unused,
208 union perf_event *event
209 __maybe_unused,
210 struct perf_session *session
211 __maybe_unused)
212 {
213 dump_printf(": unhandled!\n");
214 return 0;
215 }
216
217 static int process_event_synth_attr_stub(struct perf_tool *tool __maybe_unused,
218 union perf_event *event __maybe_unused,
219 struct perf_evlist **pevlist
220 __maybe_unused)
221 {
222 dump_printf(": unhandled!\n");
223 return 0;
224 }
225
226 static int process_event_synth_event_update_stub(struct perf_tool *tool __maybe_unused,
227 union perf_event *event __maybe_unused,
228 struct perf_evlist **pevlist
229 __maybe_unused)
230 {
231 if (dump_trace)
232 perf_event__fprintf_event_update(event, stdout);
233
234 dump_printf(": unhandled!\n");
235 return 0;
236 }
237
238 static int process_event_sample_stub(struct perf_tool *tool __maybe_unused,
239 union perf_event *event __maybe_unused,
240 struct perf_sample *sample __maybe_unused,
241 struct perf_evsel *evsel __maybe_unused,
242 struct machine *machine __maybe_unused)
243 {
244 dump_printf(": unhandled!\n");
245 return 0;
246 }
247
248 static int process_event_stub(struct perf_tool *tool __maybe_unused,
249 union perf_event *event __maybe_unused,
250 struct perf_sample *sample __maybe_unused,
251 struct machine *machine __maybe_unused)
252 {
253 dump_printf(": unhandled!\n");
254 return 0;
255 }
256
257 static int process_finished_round_stub(struct perf_tool *tool __maybe_unused,
258 union perf_event *event __maybe_unused,
259 struct ordered_events *oe __maybe_unused)
260 {
261 dump_printf(": unhandled!\n");
262 return 0;
263 }
264
265 static int process_finished_round(struct perf_tool *tool,
266 union perf_event *event,
267 struct ordered_events *oe);
268
269 static int skipn(int fd, off_t n)
270 {
271 char buf[4096];
272 ssize_t ret;
273
274 while (n > 0) {
275 ret = read(fd, buf, min(n, (off_t)sizeof(buf)));
276 if (ret <= 0)
277 return ret;
278 n -= ret;
279 }
280
281 return 0;
282 }
283
284 static s64 process_event_auxtrace_stub(struct perf_tool *tool __maybe_unused,
285 union perf_event *event,
286 struct perf_session *session
287 __maybe_unused)
288 {
289 dump_printf(": unhandled!\n");
290 if (perf_data__is_pipe(session->data))
291 skipn(perf_data__fd(session->data), event->auxtrace.size);
292 return event->auxtrace.size;
293 }
294
295 static int process_event_op2_stub(struct perf_tool *tool __maybe_unused,
296 union perf_event *event __maybe_unused,
297 struct perf_session *session __maybe_unused)
298 {
299 dump_printf(": unhandled!\n");
300 return 0;
301 }
302
303
304 static
305 int process_event_thread_map_stub(struct perf_tool *tool __maybe_unused,
306 union perf_event *event __maybe_unused,
307 struct perf_session *session __maybe_unused)
308 {
309 if (dump_trace)
310 perf_event__fprintf_thread_map(event, stdout);
311
312 dump_printf(": unhandled!\n");
313 return 0;
314 }
315
316 static
317 int process_event_cpu_map_stub(struct perf_tool *tool __maybe_unused,
318 union perf_event *event __maybe_unused,
319 struct perf_session *session __maybe_unused)
320 {
321 if (dump_trace)
322 perf_event__fprintf_cpu_map(event, stdout);
323
324 dump_printf(": unhandled!\n");
325 return 0;
326 }
327
328 static
329 int process_event_stat_config_stub(struct perf_tool *tool __maybe_unused,
330 union perf_event *event __maybe_unused,
331 struct perf_session *session __maybe_unused)
332 {
333 if (dump_trace)
334 perf_event__fprintf_stat_config(event, stdout);
335
336 dump_printf(": unhandled!\n");
337 return 0;
338 }
339
340 static int process_stat_stub(struct perf_tool *tool __maybe_unused,
341 union perf_event *event __maybe_unused,
342 struct perf_session *perf_session
343 __maybe_unused)
344 {
345 if (dump_trace)
346 perf_event__fprintf_stat(event, stdout);
347
348 dump_printf(": unhandled!\n");
349 return 0;
350 }
351
352 static int process_stat_round_stub(struct perf_tool *tool __maybe_unused,
353 union perf_event *event __maybe_unused,
354 struct perf_session *perf_session
355 __maybe_unused)
356 {
357 if (dump_trace)
358 perf_event__fprintf_stat_round(event, stdout);
359
360 dump_printf(": unhandled!\n");
361 return 0;
362 }
363
364 void perf_tool__fill_defaults(struct perf_tool *tool)
365 {
366 if (tool->sample == NULL)
367 tool->sample = process_event_sample_stub;
368 if (tool->mmap == NULL)
369 tool->mmap = process_event_stub;
370 if (tool->mmap2 == NULL)
371 tool->mmap2 = process_event_stub;
372 if (tool->comm == NULL)
373 tool->comm = process_event_stub;
374 if (tool->namespaces == NULL)
375 tool->namespaces = process_event_stub;
376 if (tool->fork == NULL)
377 tool->fork = process_event_stub;
378 if (tool->exit == NULL)
379 tool->exit = process_event_stub;
380 if (tool->lost == NULL)
381 tool->lost = perf_event__process_lost;
382 if (tool->lost_samples == NULL)
383 tool->lost_samples = perf_event__process_lost_samples;
384 if (tool->aux == NULL)
385 tool->aux = perf_event__process_aux;
386 if (tool->itrace_start == NULL)
387 tool->itrace_start = perf_event__process_itrace_start;
388 if (tool->context_switch == NULL)
389 tool->context_switch = perf_event__process_switch;
390 if (tool->read == NULL)
391 tool->read = process_event_sample_stub;
392 if (tool->throttle == NULL)
393 tool->throttle = process_event_stub;
394 if (tool->unthrottle == NULL)
395 tool->unthrottle = process_event_stub;
396 if (tool->attr == NULL)
397 tool->attr = process_event_synth_attr_stub;
398 if (tool->event_update == NULL)
399 tool->event_update = process_event_synth_event_update_stub;
400 if (tool->tracing_data == NULL)
401 tool->tracing_data = process_event_synth_tracing_data_stub;
402 if (tool->build_id == NULL)
403 tool->build_id = process_event_op2_stub;
404 if (tool->finished_round == NULL) {
405 if (tool->ordered_events)
406 tool->finished_round = process_finished_round;
407 else
408 tool->finished_round = process_finished_round_stub;
409 }
410 if (tool->id_index == NULL)
411 tool->id_index = process_event_op2_stub;
412 if (tool->auxtrace_info == NULL)
413 tool->auxtrace_info = process_event_op2_stub;
414 if (tool->auxtrace == NULL)
415 tool->auxtrace = process_event_auxtrace_stub;
416 if (tool->auxtrace_error == NULL)
417 tool->auxtrace_error = process_event_op2_stub;
418 if (tool->thread_map == NULL)
419 tool->thread_map = process_event_thread_map_stub;
420 if (tool->cpu_map == NULL)
421 tool->cpu_map = process_event_cpu_map_stub;
422 if (tool->stat_config == NULL)
423 tool->stat_config = process_event_stat_config_stub;
424 if (tool->stat == NULL)
425 tool->stat = process_stat_stub;
426 if (tool->stat_round == NULL)
427 tool->stat_round = process_stat_round_stub;
428 if (tool->time_conv == NULL)
429 tool->time_conv = process_event_op2_stub;
430 if (tool->feature == NULL)
431 tool->feature = process_event_op2_stub;
432 }
433
434 static void swap_sample_id_all(union perf_event *event, void *data)
435 {
436 void *end = (void *) event + event->header.size;
437 int size = end - data;
438
439 BUG_ON(size % sizeof(u64));
440 mem_bswap_64(data, size);
441 }
442
443 static void perf_event__all64_swap(union perf_event *event,
444 bool sample_id_all __maybe_unused)
445 {
446 struct perf_event_header *hdr = &event->header;
447 mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr));
448 }
449
450 static void perf_event__comm_swap(union perf_event *event, bool sample_id_all)
451 {
452 event->comm.pid = bswap_32(event->comm.pid);
453 event->comm.tid = bswap_32(event->comm.tid);
454
455 if (sample_id_all) {
456 void *data = &event->comm.comm;
457
458 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
459 swap_sample_id_all(event, data);
460 }
461 }
462
463 static void perf_event__mmap_swap(union perf_event *event,
464 bool sample_id_all)
465 {
466 event->mmap.pid = bswap_32(event->mmap.pid);
467 event->mmap.tid = bswap_32(event->mmap.tid);
468 event->mmap.start = bswap_64(event->mmap.start);
469 event->mmap.len = bswap_64(event->mmap.len);
470 event->mmap.pgoff = bswap_64(event->mmap.pgoff);
471
472 if (sample_id_all) {
473 void *data = &event->mmap.filename;
474
475 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
476 swap_sample_id_all(event, data);
477 }
478 }
479
480 static void perf_event__mmap2_swap(union perf_event *event,
481 bool sample_id_all)
482 {
483 event->mmap2.pid = bswap_32(event->mmap2.pid);
484 event->mmap2.tid = bswap_32(event->mmap2.tid);
485 event->mmap2.start = bswap_64(event->mmap2.start);
486 event->mmap2.len = bswap_64(event->mmap2.len);
487 event->mmap2.pgoff = bswap_64(event->mmap2.pgoff);
488 event->mmap2.maj = bswap_32(event->mmap2.maj);
489 event->mmap2.min = bswap_32(event->mmap2.min);
490 event->mmap2.ino = bswap_64(event->mmap2.ino);
491
492 if (sample_id_all) {
493 void *data = &event->mmap2.filename;
494
495 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
496 swap_sample_id_all(event, data);
497 }
498 }
499 static void perf_event__task_swap(union perf_event *event, bool sample_id_all)
500 {
501 event->fork.pid = bswap_32(event->fork.pid);
502 event->fork.tid = bswap_32(event->fork.tid);
503 event->fork.ppid = bswap_32(event->fork.ppid);
504 event->fork.ptid = bswap_32(event->fork.ptid);
505 event->fork.time = bswap_64(event->fork.time);
506
507 if (sample_id_all)
508 swap_sample_id_all(event, &event->fork + 1);
509 }
510
511 static void perf_event__read_swap(union perf_event *event, bool sample_id_all)
512 {
513 event->read.pid = bswap_32(event->read.pid);
514 event->read.tid = bswap_32(event->read.tid);
515 event->read.value = bswap_64(event->read.value);
516 event->read.time_enabled = bswap_64(event->read.time_enabled);
517 event->read.time_running = bswap_64(event->read.time_running);
518 event->read.id = bswap_64(event->read.id);
519
520 if (sample_id_all)
521 swap_sample_id_all(event, &event->read + 1);
522 }
523
524 static void perf_event__aux_swap(union perf_event *event, bool sample_id_all)
525 {
526 event->aux.aux_offset = bswap_64(event->aux.aux_offset);
527 event->aux.aux_size = bswap_64(event->aux.aux_size);
528 event->aux.flags = bswap_64(event->aux.flags);
529
530 if (sample_id_all)
531 swap_sample_id_all(event, &event->aux + 1);
532 }
533
534 static void perf_event__itrace_start_swap(union perf_event *event,
535 bool sample_id_all)
536 {
537 event->itrace_start.pid = bswap_32(event->itrace_start.pid);
538 event->itrace_start.tid = bswap_32(event->itrace_start.tid);
539
540 if (sample_id_all)
541 swap_sample_id_all(event, &event->itrace_start + 1);
542 }
543
544 static void perf_event__switch_swap(union perf_event *event, bool sample_id_all)
545 {
546 if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE) {
547 event->context_switch.next_prev_pid =
548 bswap_32(event->context_switch.next_prev_pid);
549 event->context_switch.next_prev_tid =
550 bswap_32(event->context_switch.next_prev_tid);
551 }
552
553 if (sample_id_all)
554 swap_sample_id_all(event, &event->context_switch + 1);
555 }
556
557 static void perf_event__throttle_swap(union perf_event *event,
558 bool sample_id_all)
559 {
560 event->throttle.time = bswap_64(event->throttle.time);
561 event->throttle.id = bswap_64(event->throttle.id);
562 event->throttle.stream_id = bswap_64(event->throttle.stream_id);
563
564 if (sample_id_all)
565 swap_sample_id_all(event, &event->throttle + 1);
566 }
567
568 static u8 revbyte(u8 b)
569 {
570 int rev = (b >> 4) | ((b & 0xf) << 4);
571 rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2);
572 rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1);
573 return (u8) rev;
574 }
575
576 /*
577 * XXX this is hack in attempt to carry flags bitfield
578 * through endian village. ABI says:
579 *
580 * Bit-fields are allocated from right to left (least to most significant)
581 * on little-endian implementations and from left to right (most to least
582 * significant) on big-endian implementations.
583 *
584 * The above seems to be byte specific, so we need to reverse each
585 * byte of the bitfield. 'Internet' also says this might be implementation
586 * specific and we probably need proper fix and carry perf_event_attr
587 * bitfield flags in separate data file FEAT_ section. Thought this seems
588 * to work for now.
589 */
590 static void swap_bitfield(u8 *p, unsigned len)
591 {
592 unsigned i;
593
594 for (i = 0; i < len; i++) {
595 *p = revbyte(*p);
596 p++;
597 }
598 }
599
600 /* exported for swapping attributes in file header */
601 void perf_event__attr_swap(struct perf_event_attr *attr)
602 {
603 attr->type = bswap_32(attr->type);
604 attr->size = bswap_32(attr->size);
605
606 #define bswap_safe(f, n) \
607 (attr->size > (offsetof(struct perf_event_attr, f) + \
608 sizeof(attr->f) * (n)))
609 #define bswap_field(f, sz) \
610 do { \
611 if (bswap_safe(f, 0)) \
612 attr->f = bswap_##sz(attr->f); \
613 } while(0)
614 #define bswap_field_16(f) bswap_field(f, 16)
615 #define bswap_field_32(f) bswap_field(f, 32)
616 #define bswap_field_64(f) bswap_field(f, 64)
617
618 bswap_field_64(config);
619 bswap_field_64(sample_period);
620 bswap_field_64(sample_type);
621 bswap_field_64(read_format);
622 bswap_field_32(wakeup_events);
623 bswap_field_32(bp_type);
624 bswap_field_64(bp_addr);
625 bswap_field_64(bp_len);
626 bswap_field_64(branch_sample_type);
627 bswap_field_64(sample_regs_user);
628 bswap_field_32(sample_stack_user);
629 bswap_field_32(aux_watermark);
630 bswap_field_16(sample_max_stack);
631
632 /*
633 * After read_format are bitfields. Check read_format because
634 * we are unable to use offsetof on bitfield.
635 */
636 if (bswap_safe(read_format, 1))
637 swap_bitfield((u8 *) (&attr->read_format + 1),
638 sizeof(u64));
639 #undef bswap_field_64
640 #undef bswap_field_32
641 #undef bswap_field
642 #undef bswap_safe
643 }
644
645 static void perf_event__hdr_attr_swap(union perf_event *event,
646 bool sample_id_all __maybe_unused)
647 {
648 size_t size;
649
650 perf_event__attr_swap(&event->attr.attr);
651
652 size = event->header.size;
653 size -= (void *)&event->attr.id - (void *)event;
654 mem_bswap_64(event->attr.id, size);
655 }
656
657 static void perf_event__event_update_swap(union perf_event *event,
658 bool sample_id_all __maybe_unused)
659 {
660 event->event_update.type = bswap_64(event->event_update.type);
661 event->event_update.id = bswap_64(event->event_update.id);
662 }
663
664 static void perf_event__event_type_swap(union perf_event *event,
665 bool sample_id_all __maybe_unused)
666 {
667 event->event_type.event_type.event_id =
668 bswap_64(event->event_type.event_type.event_id);
669 }
670
671 static void perf_event__tracing_data_swap(union perf_event *event,
672 bool sample_id_all __maybe_unused)
673 {
674 event->tracing_data.size = bswap_32(event->tracing_data.size);
675 }
676
677 static void perf_event__auxtrace_info_swap(union perf_event *event,
678 bool sample_id_all __maybe_unused)
679 {
680 size_t size;
681
682 event->auxtrace_info.type = bswap_32(event->auxtrace_info.type);
683
684 size = event->header.size;
685 size -= (void *)&event->auxtrace_info.priv - (void *)event;
686 mem_bswap_64(event->auxtrace_info.priv, size);
687 }
688
689 static void perf_event__auxtrace_swap(union perf_event *event,
690 bool sample_id_all __maybe_unused)
691 {
692 event->auxtrace.size = bswap_64(event->auxtrace.size);
693 event->auxtrace.offset = bswap_64(event->auxtrace.offset);
694 event->auxtrace.reference = bswap_64(event->auxtrace.reference);
695 event->auxtrace.idx = bswap_32(event->auxtrace.idx);
696 event->auxtrace.tid = bswap_32(event->auxtrace.tid);
697 event->auxtrace.cpu = bswap_32(event->auxtrace.cpu);
698 }
699
700 static void perf_event__auxtrace_error_swap(union perf_event *event,
701 bool sample_id_all __maybe_unused)
702 {
703 event->auxtrace_error.type = bswap_32(event->auxtrace_error.type);
704 event->auxtrace_error.code = bswap_32(event->auxtrace_error.code);
705 event->auxtrace_error.cpu = bswap_32(event->auxtrace_error.cpu);
706 event->auxtrace_error.pid = bswap_32(event->auxtrace_error.pid);
707 event->auxtrace_error.tid = bswap_32(event->auxtrace_error.tid);
708 event->auxtrace_error.ip = bswap_64(event->auxtrace_error.ip);
709 }
710
711 static void perf_event__thread_map_swap(union perf_event *event,
712 bool sample_id_all __maybe_unused)
713 {
714 unsigned i;
715
716 event->thread_map.nr = bswap_64(event->thread_map.nr);
717
718 for (i = 0; i < event->thread_map.nr; i++)
719 event->thread_map.entries[i].pid = bswap_64(event->thread_map.entries[i].pid);
720 }
721
722 static void perf_event__cpu_map_swap(union perf_event *event,
723 bool sample_id_all __maybe_unused)
724 {
725 struct cpu_map_data *data = &event->cpu_map.data;
726 struct cpu_map_entries *cpus;
727 struct cpu_map_mask *mask;
728 unsigned i;
729
730 data->type = bswap_64(data->type);
731
732 switch (data->type) {
733 case PERF_CPU_MAP__CPUS:
734 cpus = (struct cpu_map_entries *)data->data;
735
736 cpus->nr = bswap_16(cpus->nr);
737
738 for (i = 0; i < cpus->nr; i++)
739 cpus->cpu[i] = bswap_16(cpus->cpu[i]);
740 break;
741 case PERF_CPU_MAP__MASK:
742 mask = (struct cpu_map_mask *) data->data;
743
744 mask->nr = bswap_16(mask->nr);
745 mask->long_size = bswap_16(mask->long_size);
746
747 switch (mask->long_size) {
748 case 4: mem_bswap_32(&mask->mask, mask->nr); break;
749 case 8: mem_bswap_64(&mask->mask, mask->nr); break;
750 default:
751 pr_err("cpu_map swap: unsupported long size\n");
752 }
753 default:
754 break;
755 }
756 }
757
758 static void perf_event__stat_config_swap(union perf_event *event,
759 bool sample_id_all __maybe_unused)
760 {
761 u64 size;
762
763 size = event->stat_config.nr * sizeof(event->stat_config.data[0]);
764 size += 1; /* nr item itself */
765 mem_bswap_64(&event->stat_config.nr, size);
766 }
767
768 static void perf_event__stat_swap(union perf_event *event,
769 bool sample_id_all __maybe_unused)
770 {
771 event->stat.id = bswap_64(event->stat.id);
772 event->stat.thread = bswap_32(event->stat.thread);
773 event->stat.cpu = bswap_32(event->stat.cpu);
774 event->stat.val = bswap_64(event->stat.val);
775 event->stat.ena = bswap_64(event->stat.ena);
776 event->stat.run = bswap_64(event->stat.run);
777 }
778
779 static void perf_event__stat_round_swap(union perf_event *event,
780 bool sample_id_all __maybe_unused)
781 {
782 event->stat_round.type = bswap_64(event->stat_round.type);
783 event->stat_round.time = bswap_64(event->stat_round.time);
784 }
785
786 typedef void (*perf_event__swap_op)(union perf_event *event,
787 bool sample_id_all);
788
789 static perf_event__swap_op perf_event__swap_ops[] = {
790 [PERF_RECORD_MMAP] = perf_event__mmap_swap,
791 [PERF_RECORD_MMAP2] = perf_event__mmap2_swap,
792 [PERF_RECORD_COMM] = perf_event__comm_swap,
793 [PERF_RECORD_FORK] = perf_event__task_swap,
794 [PERF_RECORD_EXIT] = perf_event__task_swap,
795 [PERF_RECORD_LOST] = perf_event__all64_swap,
796 [PERF_RECORD_READ] = perf_event__read_swap,
797 [PERF_RECORD_THROTTLE] = perf_event__throttle_swap,
798 [PERF_RECORD_UNTHROTTLE] = perf_event__throttle_swap,
799 [PERF_RECORD_SAMPLE] = perf_event__all64_swap,
800 [PERF_RECORD_AUX] = perf_event__aux_swap,
801 [PERF_RECORD_ITRACE_START] = perf_event__itrace_start_swap,
802 [PERF_RECORD_LOST_SAMPLES] = perf_event__all64_swap,
803 [PERF_RECORD_SWITCH] = perf_event__switch_swap,
804 [PERF_RECORD_SWITCH_CPU_WIDE] = perf_event__switch_swap,
805 [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap,
806 [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap,
807 [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap,
808 [PERF_RECORD_HEADER_BUILD_ID] = NULL,
809 [PERF_RECORD_ID_INDEX] = perf_event__all64_swap,
810 [PERF_RECORD_AUXTRACE_INFO] = perf_event__auxtrace_info_swap,
811 [PERF_RECORD_AUXTRACE] = perf_event__auxtrace_swap,
812 [PERF_RECORD_AUXTRACE_ERROR] = perf_event__auxtrace_error_swap,
813 [PERF_RECORD_THREAD_MAP] = perf_event__thread_map_swap,
814 [PERF_RECORD_CPU_MAP] = perf_event__cpu_map_swap,
815 [PERF_RECORD_STAT_CONFIG] = perf_event__stat_config_swap,
816 [PERF_RECORD_STAT] = perf_event__stat_swap,
817 [PERF_RECORD_STAT_ROUND] = perf_event__stat_round_swap,
818 [PERF_RECORD_EVENT_UPDATE] = perf_event__event_update_swap,
819 [PERF_RECORD_TIME_CONV] = perf_event__all64_swap,
820 [PERF_RECORD_HEADER_MAX] = NULL,
821 };
822
823 /*
824 * When perf record finishes a pass on every buffers, it records this pseudo
825 * event.
826 * We record the max timestamp t found in the pass n.
827 * Assuming these timestamps are monotonic across cpus, we know that if
828 * a buffer still has events with timestamps below t, they will be all
829 * available and then read in the pass n + 1.
830 * Hence when we start to read the pass n + 2, we can safely flush every
831 * events with timestamps below t.
832 *
833 * ============ PASS n =================
834 * CPU 0 | CPU 1
835 * |
836 * cnt1 timestamps | cnt2 timestamps
837 * 1 | 2
838 * 2 | 3
839 * - | 4 <--- max recorded
840 *
841 * ============ PASS n + 1 ==============
842 * CPU 0 | CPU 1
843 * |
844 * cnt1 timestamps | cnt2 timestamps
845 * 3 | 5
846 * 4 | 6
847 * 5 | 7 <---- max recorded
848 *
849 * Flush every events below timestamp 4
850 *
851 * ============ PASS n + 2 ==============
852 * CPU 0 | CPU 1
853 * |
854 * cnt1 timestamps | cnt2 timestamps
855 * 6 | 8
856 * 7 | 9
857 * - | 10
858 *
859 * Flush every events below timestamp 7
860 * etc...
861 */
862 static int process_finished_round(struct perf_tool *tool __maybe_unused,
863 union perf_event *event __maybe_unused,
864 struct ordered_events *oe)
865 {
866 if (dump_trace)
867 fprintf(stdout, "\n");
868 return ordered_events__flush(oe, OE_FLUSH__ROUND);
869 }
870
871 int perf_session__queue_event(struct perf_session *s, union perf_event *event,
872 u64 timestamp, u64 file_offset)
873 {
874 return ordered_events__queue(&s->ordered_events, event, timestamp, file_offset);
875 }
876
877 static void callchain__lbr_callstack_printf(struct perf_sample *sample)
878 {
879 struct ip_callchain *callchain = sample->callchain;
880 struct branch_stack *lbr_stack = sample->branch_stack;
881 u64 kernel_callchain_nr = callchain->nr;
882 unsigned int i;
883
884 for (i = 0; i < kernel_callchain_nr; i++) {
885 if (callchain->ips[i] == PERF_CONTEXT_USER)
886 break;
887 }
888
889 if ((i != kernel_callchain_nr) && lbr_stack->nr) {
890 u64 total_nr;
891 /*
892 * LBR callstack can only get user call chain,
893 * i is kernel call chain number,
894 * 1 is PERF_CONTEXT_USER.
895 *
896 * The user call chain is stored in LBR registers.
897 * LBR are pair registers. The caller is stored
898 * in "from" register, while the callee is stored
899 * in "to" register.
900 * For example, there is a call stack
901 * "A"->"B"->"C"->"D".
902 * The LBR registers will recorde like
903 * "C"->"D", "B"->"C", "A"->"B".
904 * So only the first "to" register and all "from"
905 * registers are needed to construct the whole stack.
906 */
907 total_nr = i + 1 + lbr_stack->nr + 1;
908 kernel_callchain_nr = i + 1;
909
910 printf("... LBR call chain: nr:%" PRIu64 "\n", total_nr);
911
912 for (i = 0; i < kernel_callchain_nr; i++)
913 printf("..... %2d: %016" PRIx64 "\n",
914 i, callchain->ips[i]);
915
916 printf("..... %2d: %016" PRIx64 "\n",
917 (int)(kernel_callchain_nr), lbr_stack->entries[0].to);
918 for (i = 0; i < lbr_stack->nr; i++)
919 printf("..... %2d: %016" PRIx64 "\n",
920 (int)(i + kernel_callchain_nr + 1), lbr_stack->entries[i].from);
921 }
922 }
923
924 static void callchain__printf(struct perf_evsel *evsel,
925 struct perf_sample *sample)
926 {
927 unsigned int i;
928 struct ip_callchain *callchain = sample->callchain;
929
930 if (perf_evsel__has_branch_callstack(evsel))
931 callchain__lbr_callstack_printf(sample);
932
933 printf("... FP chain: nr:%" PRIu64 "\n", callchain->nr);
934
935 for (i = 0; i < callchain->nr; i++)
936 printf("..... %2d: %016" PRIx64 "\n",
937 i, callchain->ips[i]);
938 }
939
940 static void branch_stack__printf(struct perf_sample *sample)
941 {
942 uint64_t i;
943
944 printf("... branch stack: nr:%" PRIu64 "\n", sample->branch_stack->nr);
945
946 for (i = 0; i < sample->branch_stack->nr; i++) {
947 struct branch_entry *e = &sample->branch_stack->entries[i];
948
949 printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 " %hu cycles %s%s%s%s %x\n",
950 i, e->from, e->to,
951 (unsigned short)e->flags.cycles,
952 e->flags.mispred ? "M" : " ",
953 e->flags.predicted ? "P" : " ",
954 e->flags.abort ? "A" : " ",
955 e->flags.in_tx ? "T" : " ",
956 (unsigned)e->flags.reserved);
957 }
958 }
959
960 static void regs_dump__printf(u64 mask, u64 *regs)
961 {
962 unsigned rid, i = 0;
963
964 for_each_set_bit(rid, (unsigned long *) &mask, sizeof(mask) * 8) {
965 u64 val = regs[i++];
966
967 printf(".... %-5s 0x%" PRIx64 "\n",
968 perf_reg_name(rid), val);
969 }
970 }
971
972 static const char *regs_abi[] = {
973 [PERF_SAMPLE_REGS_ABI_NONE] = "none",
974 [PERF_SAMPLE_REGS_ABI_32] = "32-bit",
975 [PERF_SAMPLE_REGS_ABI_64] = "64-bit",
976 };
977
978 static inline const char *regs_dump_abi(struct regs_dump *d)
979 {
980 if (d->abi > PERF_SAMPLE_REGS_ABI_64)
981 return "unknown";
982
983 return regs_abi[d->abi];
984 }
985
986 static void regs__printf(const char *type, struct regs_dump *regs)
987 {
988 u64 mask = regs->mask;
989
990 printf("... %s regs: mask 0x%" PRIx64 " ABI %s\n",
991 type,
992 mask,
993 regs_dump_abi(regs));
994
995 regs_dump__printf(mask, regs->regs);
996 }
997
998 static void regs_user__printf(struct perf_sample *sample)
999 {
1000 struct regs_dump *user_regs = &sample->user_regs;
1001
1002 if (user_regs->regs)
1003 regs__printf("user", user_regs);
1004 }
1005
1006 static void regs_intr__printf(struct perf_sample *sample)
1007 {
1008 struct regs_dump *intr_regs = &sample->intr_regs;
1009
1010 if (intr_regs->regs)
1011 regs__printf("intr", intr_regs);
1012 }
1013
1014 static void stack_user__printf(struct stack_dump *dump)
1015 {
1016 printf("... ustack: size %" PRIu64 ", offset 0x%x\n",
1017 dump->size, dump->offset);
1018 }
1019
1020 static void perf_evlist__print_tstamp(struct perf_evlist *evlist,
1021 union perf_event *event,
1022 struct perf_sample *sample)
1023 {
1024 u64 sample_type = __perf_evlist__combined_sample_type(evlist);
1025
1026 if (event->header.type != PERF_RECORD_SAMPLE &&
1027 !perf_evlist__sample_id_all(evlist)) {
1028 fputs("-1 -1 ", stdout);
1029 return;
1030 }
1031
1032 if ((sample_type & PERF_SAMPLE_CPU))
1033 printf("%u ", sample->cpu);
1034
1035 if (sample_type & PERF_SAMPLE_TIME)
1036 printf("%" PRIu64 " ", sample->time);
1037 }
1038
1039 static void sample_read__printf(struct perf_sample *sample, u64 read_format)
1040 {
1041 printf("... sample_read:\n");
1042
1043 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
1044 printf("...... time enabled %016" PRIx64 "\n",
1045 sample->read.time_enabled);
1046
1047 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
1048 printf("...... time running %016" PRIx64 "\n",
1049 sample->read.time_running);
1050
1051 if (read_format & PERF_FORMAT_GROUP) {
1052 u64 i;
1053
1054 printf(".... group nr %" PRIu64 "\n", sample->read.group.nr);
1055
1056 for (i = 0; i < sample->read.group.nr; i++) {
1057 struct sample_read_value *value;
1058
1059 value = &sample->read.group.values[i];
1060 printf("..... id %016" PRIx64
1061 ", value %016" PRIx64 "\n",
1062 value->id, value->value);
1063 }
1064 } else
1065 printf("..... id %016" PRIx64 ", value %016" PRIx64 "\n",
1066 sample->read.one.id, sample->read.one.value);
1067 }
1068
1069 static void dump_event(struct perf_evlist *evlist, union perf_event *event,
1070 u64 file_offset, struct perf_sample *sample)
1071 {
1072 if (!dump_trace)
1073 return;
1074
1075 printf("\n%#" PRIx64 " [%#x]: event: %d\n",
1076 file_offset, event->header.size, event->header.type);
1077
1078 trace_event(event);
1079
1080 if (sample)
1081 perf_evlist__print_tstamp(evlist, event, sample);
1082
1083 printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset,
1084 event->header.size, perf_event__name(event->header.type));
1085 }
1086
1087 static void dump_sample(struct perf_evsel *evsel, union perf_event *event,
1088 struct perf_sample *sample)
1089 {
1090 u64 sample_type;
1091
1092 if (!dump_trace)
1093 return;
1094
1095 printf("(IP, 0x%x): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n",
1096 event->header.misc, sample->pid, sample->tid, sample->ip,
1097 sample->period, sample->addr);
1098
1099 sample_type = evsel->attr.sample_type;
1100
1101 if (evsel__has_callchain(evsel))
1102 callchain__printf(evsel, sample);
1103
1104 if ((sample_type & PERF_SAMPLE_BRANCH_STACK) && !perf_evsel__has_branch_callstack(evsel))
1105 branch_stack__printf(sample);
1106
1107 if (sample_type & PERF_SAMPLE_REGS_USER)
1108 regs_user__printf(sample);
1109
1110 if (sample_type & PERF_SAMPLE_REGS_INTR)
1111 regs_intr__printf(sample);
1112
1113 if (sample_type & PERF_SAMPLE_STACK_USER)
1114 stack_user__printf(&sample->user_stack);
1115
1116 if (sample_type & PERF_SAMPLE_WEIGHT)
1117 printf("... weight: %" PRIu64 "\n", sample->weight);
1118
1119 if (sample_type & PERF_SAMPLE_DATA_SRC)
1120 printf(" . data_src: 0x%"PRIx64"\n", sample->data_src);
1121
1122 if (sample_type & PERF_SAMPLE_PHYS_ADDR)
1123 printf(" .. phys_addr: 0x%"PRIx64"\n", sample->phys_addr);
1124
1125 if (sample_type & PERF_SAMPLE_TRANSACTION)
1126 printf("... transaction: %" PRIx64 "\n", sample->transaction);
1127
1128 if (sample_type & PERF_SAMPLE_READ)
1129 sample_read__printf(sample, evsel->attr.read_format);
1130 }
1131
1132 static void dump_read(struct perf_evsel *evsel, union perf_event *event)
1133 {
1134 struct read_event *read_event = &event->read;
1135 u64 read_format;
1136
1137 if (!dump_trace)
1138 return;
1139
1140 printf(": %d %d %s %" PRIu64 "\n", event->read.pid, event->read.tid,
1141 evsel ? perf_evsel__name(evsel) : "FAIL",
1142 event->read.value);
1143
1144 read_format = evsel->attr.read_format;
1145
1146 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
1147 printf("... time enabled : %" PRIu64 "\n", read_event->time_enabled);
1148
1149 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
1150 printf("... time running : %" PRIu64 "\n", read_event->time_running);
1151
1152 if (read_format & PERF_FORMAT_ID)
1153 printf("... id : %" PRIu64 "\n", read_event->id);
1154 }
1155
1156 static struct machine *machines__find_for_cpumode(struct machines *machines,
1157 union perf_event *event,
1158 struct perf_sample *sample)
1159 {
1160 struct machine *machine;
1161
1162 if (perf_guest &&
1163 ((sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL) ||
1164 (sample->cpumode == PERF_RECORD_MISC_GUEST_USER))) {
1165 u32 pid;
1166
1167 if (event->header.type == PERF_RECORD_MMAP
1168 || event->header.type == PERF_RECORD_MMAP2)
1169 pid = event->mmap.pid;
1170 else
1171 pid = sample->pid;
1172
1173 machine = machines__find(machines, pid);
1174 if (!machine)
1175 machine = machines__findnew(machines, DEFAULT_GUEST_KERNEL_ID);
1176 return machine;
1177 }
1178
1179 return &machines->host;
1180 }
1181
1182 static int deliver_sample_value(struct perf_evlist *evlist,
1183 struct perf_tool *tool,
1184 union perf_event *event,
1185 struct perf_sample *sample,
1186 struct sample_read_value *v,
1187 struct machine *machine)
1188 {
1189 struct perf_sample_id *sid = perf_evlist__id2sid(evlist, v->id);
1190
1191 if (sid) {
1192 sample->id = v->id;
1193 sample->period = v->value - sid->period;
1194 sid->period = v->value;
1195 }
1196
1197 if (!sid || sid->evsel == NULL) {
1198 ++evlist->stats.nr_unknown_id;
1199 return 0;
1200 }
1201
1202 return tool->sample(tool, event, sample, sid->evsel, machine);
1203 }
1204
1205 static int deliver_sample_group(struct perf_evlist *evlist,
1206 struct perf_tool *tool,
1207 union perf_event *event,
1208 struct perf_sample *sample,
1209 struct machine *machine)
1210 {
1211 int ret = -EINVAL;
1212 u64 i;
1213
1214 for (i = 0; i < sample->read.group.nr; i++) {
1215 ret = deliver_sample_value(evlist, tool, event, sample,
1216 &sample->read.group.values[i],
1217 machine);
1218 if (ret)
1219 break;
1220 }
1221
1222 return ret;
1223 }
1224
1225 static int
1226 perf_evlist__deliver_sample(struct perf_evlist *evlist,
1227 struct perf_tool *tool,
1228 union perf_event *event,
1229 struct perf_sample *sample,
1230 struct perf_evsel *evsel,
1231 struct machine *machine)
1232 {
1233 /* We know evsel != NULL. */
1234 u64 sample_type = evsel->attr.sample_type;
1235 u64 read_format = evsel->attr.read_format;
1236
1237 /* Standard sample delivery. */
1238 if (!(sample_type & PERF_SAMPLE_READ))
1239 return tool->sample(tool, event, sample, evsel, machine);
1240
1241 /* For PERF_SAMPLE_READ we have either single or group mode. */
1242 if (read_format & PERF_FORMAT_GROUP)
1243 return deliver_sample_group(evlist, tool, event, sample,
1244 machine);
1245 else
1246 return deliver_sample_value(evlist, tool, event, sample,
1247 &sample->read.one, machine);
1248 }
1249
1250 static int machines__deliver_event(struct machines *machines,
1251 struct perf_evlist *evlist,
1252 union perf_event *event,
1253 struct perf_sample *sample,
1254 struct perf_tool *tool, u64 file_offset)
1255 {
1256 struct perf_evsel *evsel;
1257 struct machine *machine;
1258
1259 dump_event(evlist, event, file_offset, sample);
1260
1261 evsel = perf_evlist__id2evsel(evlist, sample->id);
1262
1263 machine = machines__find_for_cpumode(machines, event, sample);
1264
1265 switch (event->header.type) {
1266 case PERF_RECORD_SAMPLE:
1267 if (evsel == NULL) {
1268 ++evlist->stats.nr_unknown_id;
1269 return 0;
1270 }
1271 dump_sample(evsel, event, sample);
1272 if (machine == NULL) {
1273 ++evlist->stats.nr_unprocessable_samples;
1274 return 0;
1275 }
1276 return perf_evlist__deliver_sample(evlist, tool, event, sample, evsel, machine);
1277 case PERF_RECORD_MMAP:
1278 return tool->mmap(tool, event, sample, machine);
1279 case PERF_RECORD_MMAP2:
1280 if (event->header.misc & PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT)
1281 ++evlist->stats.nr_proc_map_timeout;
1282 return tool->mmap2(tool, event, sample, machine);
1283 case PERF_RECORD_COMM:
1284 return tool->comm(tool, event, sample, machine);
1285 case PERF_RECORD_NAMESPACES:
1286 return tool->namespaces(tool, event, sample, machine);
1287 case PERF_RECORD_FORK:
1288 return tool->fork(tool, event, sample, machine);
1289 case PERF_RECORD_EXIT:
1290 return tool->exit(tool, event, sample, machine);
1291 case PERF_RECORD_LOST:
1292 if (tool->lost == perf_event__process_lost)
1293 evlist->stats.total_lost += event->lost.lost;
1294 return tool->lost(tool, event, sample, machine);
1295 case PERF_RECORD_LOST_SAMPLES:
1296 if (tool->lost_samples == perf_event__process_lost_samples)
1297 evlist->stats.total_lost_samples += event->lost_samples.lost;
1298 return tool->lost_samples(tool, event, sample, machine);
1299 case PERF_RECORD_READ:
1300 dump_read(evsel, event);
1301 return tool->read(tool, event, sample, evsel, machine);
1302 case PERF_RECORD_THROTTLE:
1303 return tool->throttle(tool, event, sample, machine);
1304 case PERF_RECORD_UNTHROTTLE:
1305 return tool->unthrottle(tool, event, sample, machine);
1306 case PERF_RECORD_AUX:
1307 if (tool->aux == perf_event__process_aux) {
1308 if (event->aux.flags & PERF_AUX_FLAG_TRUNCATED)
1309 evlist->stats.total_aux_lost += 1;
1310 if (event->aux.flags & PERF_AUX_FLAG_PARTIAL)
1311 evlist->stats.total_aux_partial += 1;
1312 }
1313 return tool->aux(tool, event, sample, machine);
1314 case PERF_RECORD_ITRACE_START:
1315 return tool->itrace_start(tool, event, sample, machine);
1316 case PERF_RECORD_SWITCH:
1317 case PERF_RECORD_SWITCH_CPU_WIDE:
1318 return tool->context_switch(tool, event, sample, machine);
1319 default:
1320 ++evlist->stats.nr_unknown_events;
1321 return -1;
1322 }
1323 }
1324
1325 static int perf_session__deliver_event(struct perf_session *session,
1326 union perf_event *event,
1327 struct perf_tool *tool,
1328 u64 file_offset)
1329 {
1330 struct perf_sample sample;
1331 int ret;
1332
1333 ret = perf_evlist__parse_sample(session->evlist, event, &sample);
1334 if (ret) {
1335 pr_err("Can't parse sample, err = %d\n", ret);
1336 return ret;
1337 }
1338
1339 ret = auxtrace__process_event(session, event, &sample, tool);
1340 if (ret < 0)
1341 return ret;
1342 if (ret > 0)
1343 return 0;
1344
1345 return machines__deliver_event(&session->machines, session->evlist,
1346 event, &sample, tool, file_offset);
1347 }
1348
1349 static s64 perf_session__process_user_event(struct perf_session *session,
1350 union perf_event *event,
1351 u64 file_offset)
1352 {
1353 struct ordered_events *oe = &session->ordered_events;
1354 struct perf_tool *tool = session->tool;
1355 struct perf_sample sample = { .time = 0, };
1356 int fd = perf_data__fd(session->data);
1357 int err;
1358
1359 dump_event(session->evlist, event, file_offset, &sample);
1360
1361 /* These events are processed right away */
1362 switch (event->header.type) {
1363 case PERF_RECORD_HEADER_ATTR:
1364 err = tool->attr(tool, event, &session->evlist);
1365 if (err == 0) {
1366 perf_session__set_id_hdr_size(session);
1367 perf_session__set_comm_exec(session);
1368 }
1369 return err;
1370 case PERF_RECORD_EVENT_UPDATE:
1371 return tool->event_update(tool, event, &session->evlist);
1372 case PERF_RECORD_HEADER_EVENT_TYPE:
1373 /*
1374 * Depreceated, but we need to handle it for sake
1375 * of old data files create in pipe mode.
1376 */
1377 return 0;
1378 case PERF_RECORD_HEADER_TRACING_DATA:
1379 /* setup for reading amidst mmap */
1380 lseek(fd, file_offset, SEEK_SET);
1381 return tool->tracing_data(tool, event, session);
1382 case PERF_RECORD_HEADER_BUILD_ID:
1383 return tool->build_id(tool, event, session);
1384 case PERF_RECORD_FINISHED_ROUND:
1385 return tool->finished_round(tool, event, oe);
1386 case PERF_RECORD_ID_INDEX:
1387 return tool->id_index(tool, event, session);
1388 case PERF_RECORD_AUXTRACE_INFO:
1389 return tool->auxtrace_info(tool, event, session);
1390 case PERF_RECORD_AUXTRACE:
1391 /* setup for reading amidst mmap */
1392 lseek(fd, file_offset + event->header.size, SEEK_SET);
1393 return tool->auxtrace(tool, event, session);
1394 case PERF_RECORD_AUXTRACE_ERROR:
1395 perf_session__auxtrace_error_inc(session, event);
1396 return tool->auxtrace_error(tool, event, session);
1397 case PERF_RECORD_THREAD_MAP:
1398 return tool->thread_map(tool, event, session);
1399 case PERF_RECORD_CPU_MAP:
1400 return tool->cpu_map(tool, event, session);
1401 case PERF_RECORD_STAT_CONFIG:
1402 return tool->stat_config(tool, event, session);
1403 case PERF_RECORD_STAT:
1404 return tool->stat(tool, event, session);
1405 case PERF_RECORD_STAT_ROUND:
1406 return tool->stat_round(tool, event, session);
1407 case PERF_RECORD_TIME_CONV:
1408 session->time_conv = event->time_conv;
1409 return tool->time_conv(tool, event, session);
1410 case PERF_RECORD_HEADER_FEATURE:
1411 return tool->feature(tool, event, session);
1412 default:
1413 return -EINVAL;
1414 }
1415 }
1416
1417 int perf_session__deliver_synth_event(struct perf_session *session,
1418 union perf_event *event,
1419 struct perf_sample *sample)
1420 {
1421 struct perf_evlist *evlist = session->evlist;
1422 struct perf_tool *tool = session->tool;
1423
1424 events_stats__inc(&evlist->stats, event->header.type);
1425
1426 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
1427 return perf_session__process_user_event(session, event, 0);
1428
1429 return machines__deliver_event(&session->machines, evlist, event, sample, tool, 0);
1430 }
1431
1432 static void event_swap(union perf_event *event, bool sample_id_all)
1433 {
1434 perf_event__swap_op swap;
1435
1436 swap = perf_event__swap_ops[event->header.type];
1437 if (swap)
1438 swap(event, sample_id_all);
1439 }
1440
1441 int perf_session__peek_event(struct perf_session *session, off_t file_offset,
1442 void *buf, size_t buf_sz,
1443 union perf_event **event_ptr,
1444 struct perf_sample *sample)
1445 {
1446 union perf_event *event;
1447 size_t hdr_sz, rest;
1448 int fd;
1449
1450 if (session->one_mmap && !session->header.needs_swap) {
1451 event = file_offset - session->one_mmap_offset +
1452 session->one_mmap_addr;
1453 goto out_parse_sample;
1454 }
1455
1456 if (perf_data__is_pipe(session->data))
1457 return -1;
1458
1459 fd = perf_data__fd(session->data);
1460 hdr_sz = sizeof(struct perf_event_header);
1461
1462 if (buf_sz < hdr_sz)
1463 return -1;
1464
1465 if (lseek(fd, file_offset, SEEK_SET) == (off_t)-1 ||
1466 readn(fd, buf, hdr_sz) != (ssize_t)hdr_sz)
1467 return -1;
1468
1469 event = (union perf_event *)buf;
1470
1471 if (session->header.needs_swap)
1472 perf_event_header__bswap(&event->header);
1473
1474 if (event->header.size < hdr_sz || event->header.size > buf_sz)
1475 return -1;
1476
1477 rest = event->header.size - hdr_sz;
1478
1479 if (readn(fd, buf, rest) != (ssize_t)rest)
1480 return -1;
1481
1482 if (session->header.needs_swap)
1483 event_swap(event, perf_evlist__sample_id_all(session->evlist));
1484
1485 out_parse_sample:
1486
1487 if (sample && event->header.type < PERF_RECORD_USER_TYPE_START &&
1488 perf_evlist__parse_sample(session->evlist, event, sample))
1489 return -1;
1490
1491 *event_ptr = event;
1492
1493 return 0;
1494 }
1495
1496 static s64 perf_session__process_event(struct perf_session *session,
1497 union perf_event *event, u64 file_offset)
1498 {
1499 struct perf_evlist *evlist = session->evlist;
1500 struct perf_tool *tool = session->tool;
1501 int ret;
1502
1503 if (session->header.needs_swap)
1504 event_swap(event, perf_evlist__sample_id_all(evlist));
1505
1506 if (event->header.type >= PERF_RECORD_HEADER_MAX)
1507 return -EINVAL;
1508
1509 events_stats__inc(&evlist->stats, event->header.type);
1510
1511 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
1512 return perf_session__process_user_event(session, event, file_offset);
1513
1514 if (tool->ordered_events) {
1515 u64 timestamp = -1ULL;
1516
1517 ret = perf_evlist__parse_sample_timestamp(evlist, event, &timestamp);
1518 if (ret && ret != -1)
1519 return ret;
1520
1521 ret = perf_session__queue_event(session, event, timestamp, file_offset);
1522 if (ret != -ETIME)
1523 return ret;
1524 }
1525
1526 return perf_session__deliver_event(session, event, tool, file_offset);
1527 }
1528
1529 void perf_event_header__bswap(struct perf_event_header *hdr)
1530 {
1531 hdr->type = bswap_32(hdr->type);
1532 hdr->misc = bswap_16(hdr->misc);
1533 hdr->size = bswap_16(hdr->size);
1534 }
1535
1536 struct thread *perf_session__findnew(struct perf_session *session, pid_t pid)
1537 {
1538 return machine__findnew_thread(&session->machines.host, -1, pid);
1539 }
1540
1541 int perf_session__register_idle_thread(struct perf_session *session)
1542 {
1543 struct thread *thread;
1544 int err = 0;
1545
1546 thread = machine__findnew_thread(&session->machines.host, 0, 0);
1547 if (thread == NULL || thread__set_comm(thread, "swapper", 0)) {
1548 pr_err("problem inserting idle task.\n");
1549 err = -1;
1550 }
1551
1552 if (thread == NULL || thread__set_namespaces(thread, 0, NULL)) {
1553 pr_err("problem inserting idle task.\n");
1554 err = -1;
1555 }
1556
1557 /* machine__findnew_thread() got the thread, so put it */
1558 thread__put(thread);
1559 return err;
1560 }
1561
1562 static void
1563 perf_session__warn_order(const struct perf_session *session)
1564 {
1565 const struct ordered_events *oe = &session->ordered_events;
1566 struct perf_evsel *evsel;
1567 bool should_warn = true;
1568
1569 evlist__for_each_entry(session->evlist, evsel) {
1570 if (evsel->attr.write_backward)
1571 should_warn = false;
1572 }
1573
1574 if (!should_warn)
1575 return;
1576 if (oe->nr_unordered_events != 0)
1577 ui__warning("%u out of order events recorded.\n", oe->nr_unordered_events);
1578 }
1579
1580 static void perf_session__warn_about_errors(const struct perf_session *session)
1581 {
1582 const struct events_stats *stats = &session->evlist->stats;
1583
1584 if (session->tool->lost == perf_event__process_lost &&
1585 stats->nr_events[PERF_RECORD_LOST] != 0) {
1586 ui__warning("Processed %d events and lost %d chunks!\n\n"
1587 "Check IO/CPU overload!\n\n",
1588 stats->nr_events[0],
1589 stats->nr_events[PERF_RECORD_LOST]);
1590 }
1591
1592 if (session->tool->lost_samples == perf_event__process_lost_samples) {
1593 double drop_rate;
1594
1595 drop_rate = (double)stats->total_lost_samples /
1596 (double) (stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples);
1597 if (drop_rate > 0.05) {
1598 ui__warning("Processed %" PRIu64 " samples and lost %3.2f%%!\n\n",
1599 stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples,
1600 drop_rate * 100.0);
1601 }
1602 }
1603
1604 if (session->tool->aux == perf_event__process_aux &&
1605 stats->total_aux_lost != 0) {
1606 ui__warning("AUX data lost %" PRIu64 " times out of %u!\n\n",
1607 stats->total_aux_lost,
1608 stats->nr_events[PERF_RECORD_AUX]);
1609 }
1610
1611 if (session->tool->aux == perf_event__process_aux &&
1612 stats->total_aux_partial != 0) {
1613 bool vmm_exclusive = false;
1614
1615 (void)sysfs__read_bool("module/kvm_intel/parameters/vmm_exclusive",
1616 &vmm_exclusive);
1617
1618 ui__warning("AUX data had gaps in it %" PRIu64 " times out of %u!\n\n"
1619 "Are you running a KVM guest in the background?%s\n\n",
1620 stats->total_aux_partial,
1621 stats->nr_events[PERF_RECORD_AUX],
1622 vmm_exclusive ?
1623 "\nReloading kvm_intel module with vmm_exclusive=0\n"
1624 "will reduce the gaps to only guest's timeslices." :
1625 "");
1626 }
1627
1628 if (stats->nr_unknown_events != 0) {
1629 ui__warning("Found %u unknown events!\n\n"
1630 "Is this an older tool processing a perf.data "
1631 "file generated by a more recent tool?\n\n"
1632 "If that is not the case, consider "
1633 "reporting to linux-kernel@vger.kernel.org.\n\n",
1634 stats->nr_unknown_events);
1635 }
1636
1637 if (stats->nr_unknown_id != 0) {
1638 ui__warning("%u samples with id not present in the header\n",
1639 stats->nr_unknown_id);
1640 }
1641
1642 if (stats->nr_invalid_chains != 0) {
1643 ui__warning("Found invalid callchains!\n\n"
1644 "%u out of %u events were discarded for this reason.\n\n"
1645 "Consider reporting to linux-kernel@vger.kernel.org.\n\n",
1646 stats->nr_invalid_chains,
1647 stats->nr_events[PERF_RECORD_SAMPLE]);
1648 }
1649
1650 if (stats->nr_unprocessable_samples != 0) {
1651 ui__warning("%u unprocessable samples recorded.\n"
1652 "Do you have a KVM guest running and not using 'perf kvm'?\n",
1653 stats->nr_unprocessable_samples);
1654 }
1655
1656 perf_session__warn_order(session);
1657
1658 events_stats__auxtrace_error_warn(stats);
1659
1660 if (stats->nr_proc_map_timeout != 0) {
1661 ui__warning("%d map information files for pre-existing threads were\n"
1662 "not processed, if there are samples for addresses they\n"
1663 "will not be resolved, you may find out which are these\n"
1664 "threads by running with -v and redirecting the output\n"
1665 "to a file.\n"
1666 "The time limit to process proc map is too short?\n"
1667 "Increase it by --proc-map-timeout\n",
1668 stats->nr_proc_map_timeout);
1669 }
1670 }
1671
1672 static int perf_session__flush_thread_stack(struct thread *thread,
1673 void *p __maybe_unused)
1674 {
1675 return thread_stack__flush(thread);
1676 }
1677
1678 static int perf_session__flush_thread_stacks(struct perf_session *session)
1679 {
1680 return machines__for_each_thread(&session->machines,
1681 perf_session__flush_thread_stack,
1682 NULL);
1683 }
1684
1685 volatile int session_done;
1686
1687 static int __perf_session__process_pipe_events(struct perf_session *session)
1688 {
1689 struct ordered_events *oe = &session->ordered_events;
1690 struct perf_tool *tool = session->tool;
1691 int fd = perf_data__fd(session->data);
1692 union perf_event *event;
1693 uint32_t size, cur_size = 0;
1694 void *buf = NULL;
1695 s64 skip = 0;
1696 u64 head;
1697 ssize_t err;
1698 void *p;
1699
1700 perf_tool__fill_defaults(tool);
1701
1702 head = 0;
1703 cur_size = sizeof(union perf_event);
1704
1705 buf = malloc(cur_size);
1706 if (!buf)
1707 return -errno;
1708 ordered_events__set_copy_on_queue(oe, true);
1709 more:
1710 event = buf;
1711 err = readn(fd, event, sizeof(struct perf_event_header));
1712 if (err <= 0) {
1713 if (err == 0)
1714 goto done;
1715
1716 pr_err("failed to read event header\n");
1717 goto out_err;
1718 }
1719
1720 if (session->header.needs_swap)
1721 perf_event_header__bswap(&event->header);
1722
1723 size = event->header.size;
1724 if (size < sizeof(struct perf_event_header)) {
1725 pr_err("bad event header size\n");
1726 goto out_err;
1727 }
1728
1729 if (size > cur_size) {
1730 void *new = realloc(buf, size);
1731 if (!new) {
1732 pr_err("failed to allocate memory to read event\n");
1733 goto out_err;
1734 }
1735 buf = new;
1736 cur_size = size;
1737 event = buf;
1738 }
1739 p = event;
1740 p += sizeof(struct perf_event_header);
1741
1742 if (size - sizeof(struct perf_event_header)) {
1743 err = readn(fd, p, size - sizeof(struct perf_event_header));
1744 if (err <= 0) {
1745 if (err == 0) {
1746 pr_err("unexpected end of event stream\n");
1747 goto done;
1748 }
1749
1750 pr_err("failed to read event data\n");
1751 goto out_err;
1752 }
1753 }
1754
1755 if ((skip = perf_session__process_event(session, event, head)) < 0) {
1756 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
1757 head, event->header.size, event->header.type);
1758 err = -EINVAL;
1759 goto out_err;
1760 }
1761
1762 head += size;
1763
1764 if (skip > 0)
1765 head += skip;
1766
1767 if (!session_done())
1768 goto more;
1769 done:
1770 /* do the final flush for ordered samples */
1771 err = ordered_events__flush(oe, OE_FLUSH__FINAL);
1772 if (err)
1773 goto out_err;
1774 err = auxtrace__flush_events(session, tool);
1775 if (err)
1776 goto out_err;
1777 err = perf_session__flush_thread_stacks(session);
1778 out_err:
1779 free(buf);
1780 if (!tool->no_warn)
1781 perf_session__warn_about_errors(session);
1782 ordered_events__free(&session->ordered_events);
1783 auxtrace__free_events(session);
1784 return err;
1785 }
1786
1787 static union perf_event *
1788 fetch_mmaped_event(struct perf_session *session,
1789 u64 head, size_t mmap_size, char *buf)
1790 {
1791 union perf_event *event;
1792
1793 /*
1794 * Ensure we have enough space remaining to read
1795 * the size of the event in the headers.
1796 */
1797 if (head + sizeof(event->header) > mmap_size)
1798 return NULL;
1799
1800 event = (union perf_event *)(buf + head);
1801
1802 if (session->header.needs_swap)
1803 perf_event_header__bswap(&event->header);
1804
1805 if (head + event->header.size > mmap_size) {
1806 /* We're not fetching the event so swap back again */
1807 if (session->header.needs_swap)
1808 perf_event_header__bswap(&event->header);
1809 return NULL;
1810 }
1811
1812 return event;
1813 }
1814
1815 /*
1816 * On 64bit we can mmap the data file in one go. No need for tiny mmap
1817 * slices. On 32bit we use 32MB.
1818 */
1819 #if BITS_PER_LONG == 64
1820 #define MMAP_SIZE ULLONG_MAX
1821 #define NUM_MMAPS 1
1822 #else
1823 #define MMAP_SIZE (32 * 1024 * 1024ULL)
1824 #define NUM_MMAPS 128
1825 #endif
1826
1827 static int __perf_session__process_events(struct perf_session *session,
1828 u64 data_offset, u64 data_size,
1829 u64 file_size)
1830 {
1831 struct ordered_events *oe = &session->ordered_events;
1832 struct perf_tool *tool = session->tool;
1833 int fd = perf_data__fd(session->data);
1834 u64 head, page_offset, file_offset, file_pos, size;
1835 int err, mmap_prot, mmap_flags, map_idx = 0;
1836 size_t mmap_size;
1837 char *buf, *mmaps[NUM_MMAPS];
1838 union perf_event *event;
1839 struct ui_progress prog;
1840 s64 skip;
1841
1842 perf_tool__fill_defaults(tool);
1843
1844 page_offset = page_size * (data_offset / page_size);
1845 file_offset = page_offset;
1846 head = data_offset - page_offset;
1847
1848 if (data_size == 0)
1849 goto out;
1850
1851 if (data_offset + data_size < file_size)
1852 file_size = data_offset + data_size;
1853
1854 ui_progress__init_size(&prog, file_size, "Processing events...");
1855
1856 mmap_size = MMAP_SIZE;
1857 if (mmap_size > file_size) {
1858 mmap_size = file_size;
1859 session->one_mmap = true;
1860 }
1861
1862 memset(mmaps, 0, sizeof(mmaps));
1863
1864 mmap_prot = PROT_READ;
1865 mmap_flags = MAP_SHARED;
1866
1867 if (session->header.needs_swap) {
1868 mmap_prot |= PROT_WRITE;
1869 mmap_flags = MAP_PRIVATE;
1870 }
1871 remap:
1872 buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, fd,
1873 file_offset);
1874 if (buf == MAP_FAILED) {
1875 pr_err("failed to mmap file\n");
1876 err = -errno;
1877 goto out_err;
1878 }
1879 mmaps[map_idx] = buf;
1880 map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1);
1881 file_pos = file_offset + head;
1882 if (session->one_mmap) {
1883 session->one_mmap_addr = buf;
1884 session->one_mmap_offset = file_offset;
1885 }
1886
1887 more:
1888 event = fetch_mmaped_event(session, head, mmap_size, buf);
1889 if (!event) {
1890 if (mmaps[map_idx]) {
1891 munmap(mmaps[map_idx], mmap_size);
1892 mmaps[map_idx] = NULL;
1893 }
1894
1895 page_offset = page_size * (head / page_size);
1896 file_offset += page_offset;
1897 head -= page_offset;
1898 goto remap;
1899 }
1900
1901 size = event->header.size;
1902
1903 if (size < sizeof(struct perf_event_header) ||
1904 (skip = perf_session__process_event(session, event, file_pos)) < 0) {
1905 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
1906 file_offset + head, event->header.size,
1907 event->header.type);
1908 err = -EINVAL;
1909 goto out_err;
1910 }
1911
1912 if (skip)
1913 size += skip;
1914
1915 head += size;
1916 file_pos += size;
1917
1918 ui_progress__update(&prog, size);
1919
1920 if (session_done())
1921 goto out;
1922
1923 if (file_pos < file_size)
1924 goto more;
1925
1926 out:
1927 /* do the final flush for ordered samples */
1928 err = ordered_events__flush(oe, OE_FLUSH__FINAL);
1929 if (err)
1930 goto out_err;
1931 err = auxtrace__flush_events(session, tool);
1932 if (err)
1933 goto out_err;
1934 err = perf_session__flush_thread_stacks(session);
1935 out_err:
1936 ui_progress__finish();
1937 if (!tool->no_warn)
1938 perf_session__warn_about_errors(session);
1939 /*
1940 * We may switching perf.data output, make ordered_events
1941 * reusable.
1942 */
1943 ordered_events__reinit(&session->ordered_events);
1944 auxtrace__free_events(session);
1945 session->one_mmap = false;
1946 return err;
1947 }
1948
1949 int perf_session__process_events(struct perf_session *session)
1950 {
1951 u64 size = perf_data__size(session->data);
1952 int err;
1953
1954 if (perf_session__register_idle_thread(session) < 0)
1955 return -ENOMEM;
1956
1957 if (!perf_data__is_pipe(session->data))
1958 err = __perf_session__process_events(session,
1959 session->header.data_offset,
1960 session->header.data_size, size);
1961 else
1962 err = __perf_session__process_pipe_events(session);
1963
1964 return err;
1965 }
1966
1967 bool perf_session__has_traces(struct perf_session *session, const char *msg)
1968 {
1969 struct perf_evsel *evsel;
1970
1971 evlist__for_each_entry(session->evlist, evsel) {
1972 if (evsel->attr.type == PERF_TYPE_TRACEPOINT)
1973 return true;
1974 }
1975
1976 pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg);
1977 return false;
1978 }
1979
1980 int map__set_kallsyms_ref_reloc_sym(struct map *map, const char *symbol_name, u64 addr)
1981 {
1982 char *bracket;
1983 struct ref_reloc_sym *ref;
1984 struct kmap *kmap;
1985
1986 ref = zalloc(sizeof(struct ref_reloc_sym));
1987 if (ref == NULL)
1988 return -ENOMEM;
1989
1990 ref->name = strdup(symbol_name);
1991 if (ref->name == NULL) {
1992 free(ref);
1993 return -ENOMEM;
1994 }
1995
1996 bracket = strchr(ref->name, ']');
1997 if (bracket)
1998 *bracket = '\0';
1999
2000 ref->addr = addr;
2001
2002 kmap = map__kmap(map);
2003 if (kmap)
2004 kmap->ref_reloc_sym = ref;
2005
2006 return 0;
2007 }
2008
2009 size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp)
2010 {
2011 return machines__fprintf_dsos(&session->machines, fp);
2012 }
2013
2014 size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp,
2015 bool (skip)(struct dso *dso, int parm), int parm)
2016 {
2017 return machines__fprintf_dsos_buildid(&session->machines, fp, skip, parm);
2018 }
2019
2020 size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp)
2021 {
2022 size_t ret;
2023 const char *msg = "";
2024
2025 if (perf_header__has_feat(&session->header, HEADER_AUXTRACE))
2026 msg = " (excludes AUX area (e.g. instruction trace) decoded / synthesized events)";
2027
2028 ret = fprintf(fp, "\nAggregated stats:%s\n", msg);
2029
2030 ret += events_stats__fprintf(&session->evlist->stats, fp);
2031 return ret;
2032 }
2033
2034 size_t perf_session__fprintf(struct perf_session *session, FILE *fp)
2035 {
2036 /*
2037 * FIXME: Here we have to actually print all the machines in this
2038 * session, not just the host...
2039 */
2040 return machine__fprintf(&session->machines.host, fp);
2041 }
2042
2043 struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session,
2044 unsigned int type)
2045 {
2046 struct perf_evsel *pos;
2047
2048 evlist__for_each_entry(session->evlist, pos) {
2049 if (pos->attr.type == type)
2050 return pos;
2051 }
2052 return NULL;
2053 }
2054
2055 int perf_session__cpu_bitmap(struct perf_session *session,
2056 const char *cpu_list, unsigned long *cpu_bitmap)
2057 {
2058 int i, err = -1;
2059 struct cpu_map *map;
2060
2061 for (i = 0; i < PERF_TYPE_MAX; ++i) {
2062 struct perf_evsel *evsel;
2063
2064 evsel = perf_session__find_first_evtype(session, i);
2065 if (!evsel)
2066 continue;
2067
2068 if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) {
2069 pr_err("File does not contain CPU events. "
2070 "Remove -C option to proceed.\n");
2071 return -1;
2072 }
2073 }
2074
2075 map = cpu_map__new(cpu_list);
2076 if (map == NULL) {
2077 pr_err("Invalid cpu_list\n");
2078 return -1;
2079 }
2080
2081 for (i = 0; i < map->nr; i++) {
2082 int cpu = map->map[i];
2083
2084 if (cpu >= MAX_NR_CPUS) {
2085 pr_err("Requested CPU %d too large. "
2086 "Consider raising MAX_NR_CPUS\n", cpu);
2087 goto out_delete_map;
2088 }
2089
2090 set_bit(cpu, cpu_bitmap);
2091 }
2092
2093 err = 0;
2094
2095 out_delete_map:
2096 cpu_map__put(map);
2097 return err;
2098 }
2099
2100 void perf_session__fprintf_info(struct perf_session *session, FILE *fp,
2101 bool full)
2102 {
2103 if (session == NULL || fp == NULL)
2104 return;
2105
2106 fprintf(fp, "# ========\n");
2107 perf_header__fprintf_info(session, fp, full);
2108 fprintf(fp, "# ========\n#\n");
2109 }
2110
2111
2112 int __perf_session__set_tracepoints_handlers(struct perf_session *session,
2113 const struct perf_evsel_str_handler *assocs,
2114 size_t nr_assocs)
2115 {
2116 struct perf_evsel *evsel;
2117 size_t i;
2118 int err;
2119
2120 for (i = 0; i < nr_assocs; i++) {
2121 /*
2122 * Adding a handler for an event not in the session,
2123 * just ignore it.
2124 */
2125 evsel = perf_evlist__find_tracepoint_by_name(session->evlist, assocs[i].name);
2126 if (evsel == NULL)
2127 continue;
2128
2129 err = -EEXIST;
2130 if (evsel->handler != NULL)
2131 goto out;
2132 evsel->handler = assocs[i].handler;
2133 }
2134
2135 err = 0;
2136 out:
2137 return err;
2138 }
2139
2140 int perf_event__process_id_index(struct perf_tool *tool __maybe_unused,
2141 union perf_event *event,
2142 struct perf_session *session)
2143 {
2144 struct perf_evlist *evlist = session->evlist;
2145 struct id_index_event *ie = &event->id_index;
2146 size_t i, nr, max_nr;
2147
2148 max_nr = (ie->header.size - sizeof(struct id_index_event)) /
2149 sizeof(struct id_index_entry);
2150 nr = ie->nr;
2151 if (nr > max_nr)
2152 return -EINVAL;
2153
2154 if (dump_trace)
2155 fprintf(stdout, " nr: %zu\n", nr);
2156
2157 for (i = 0; i < nr; i++) {
2158 struct id_index_entry *e = &ie->entries[i];
2159 struct perf_sample_id *sid;
2160
2161 if (dump_trace) {
2162 fprintf(stdout, " ... id: %"PRIu64, e->id);
2163 fprintf(stdout, " idx: %"PRIu64, e->idx);
2164 fprintf(stdout, " cpu: %"PRId64, e->cpu);
2165 fprintf(stdout, " tid: %"PRId64"\n", e->tid);
2166 }
2167
2168 sid = perf_evlist__id2sid(evlist, e->id);
2169 if (!sid)
2170 return -ENOENT;
2171 sid->idx = e->idx;
2172 sid->cpu = e->cpu;
2173 sid->tid = e->tid;
2174 }
2175 return 0;
2176 }
2177
2178 int perf_event__synthesize_id_index(struct perf_tool *tool,
2179 perf_event__handler_t process,
2180 struct perf_evlist *evlist,
2181 struct machine *machine)
2182 {
2183 union perf_event *ev;
2184 struct perf_evsel *evsel;
2185 size_t nr = 0, i = 0, sz, max_nr, n;
2186 int err;
2187
2188 pr_debug2("Synthesizing id index\n");
2189
2190 max_nr = (UINT16_MAX - sizeof(struct id_index_event)) /
2191 sizeof(struct id_index_entry);
2192
2193 evlist__for_each_entry(evlist, evsel)
2194 nr += evsel->ids;
2195
2196 n = nr > max_nr ? max_nr : nr;
2197 sz = sizeof(struct id_index_event) + n * sizeof(struct id_index_entry);
2198 ev = zalloc(sz);
2199 if (!ev)
2200 return -ENOMEM;
2201
2202 ev->id_index.header.type = PERF_RECORD_ID_INDEX;
2203 ev->id_index.header.size = sz;
2204 ev->id_index.nr = n;
2205
2206 evlist__for_each_entry(evlist, evsel) {
2207 u32 j;
2208
2209 for (j = 0; j < evsel->ids; j++) {
2210 struct id_index_entry *e;
2211 struct perf_sample_id *sid;
2212
2213 if (i >= n) {
2214 err = process(tool, ev, NULL, machine);
2215 if (err)
2216 goto out_err;
2217 nr -= n;
2218 i = 0;
2219 }
2220
2221 e = &ev->id_index.entries[i++];
2222
2223 e->id = evsel->id[j];
2224
2225 sid = perf_evlist__id2sid(evlist, e->id);
2226 if (!sid) {
2227 free(ev);
2228 return -ENOENT;
2229 }
2230
2231 e->idx = sid->idx;
2232 e->cpu = sid->cpu;
2233 e->tid = sid->tid;
2234 }
2235 }
2236
2237 sz = sizeof(struct id_index_event) + nr * sizeof(struct id_index_entry);
2238 ev->id_index.header.size = sz;
2239 ev->id_index.nr = nr;
2240
2241 err = process(tool, ev, NULL, machine);
2242 out_err:
2243 free(ev);
2244
2245 return err;
2246 }
Linux with added FPC-III support