1 // SPDX-License-Identifier: GPL-2.0
2 #include <errno.h>
3 #include <signal.h>
4 #include <inttypes.h>
5 #include <linux/err.h>
6 #include <linux/kernel.h>
7 #include <linux/zalloc.h>
8 #include <api/fs/fs.h>
9
10 #include <byteswap.h>
11 #include <unistd.h>
12 #include <sys/types.h>
13 #include <sys/mman.h>
14 #include <perf/cpumap.h>
15
16 #include "map_symbol.h"
17 #include "branch.h"
18 #include "debug.h"
19 #include "env.h"
20 #include "evlist.h"
21 #include "evsel.h"
22 #include "memswap.h"
23 #include "map.h"
24 #include "symbol.h"
25 #include "session.h"
26 #include "tool.h"
27 #include "perf_regs.h"
28 #include "asm/bug.h"
29 #include "auxtrace.h"
30 #include "thread.h"
31 #include "thread-stack.h"
32 #include "sample-raw.h"
33 #include "stat.h"
34 #include "tsc.h"
35 #include "ui/progress.h"
36 #include "util.h"
37 #include "arch/common.h"
38 #include "units.h"
39 #include <internal/lib.h>
40
41 #ifdef HAVE_ZSTD_SUPPORT
42 static int perf_session__process_compressed_event(struct perf_session *session,
43 union perf_event *event, u64 file_offset,
44 const char *file_path)
45 {
46 void *src;
47 size_t decomp_size, src_size;
48 u64 decomp_last_rem = 0;
49 size_t mmap_len, decomp_len = session->header.env.comp_mmap_len;
50 struct decomp *decomp, *decomp_last = session->active_decomp->decomp_last;
51
52 if (decomp_last) {
53 decomp_last_rem = decomp_last->size - decomp_last->head;
54 decomp_len += decomp_last_rem;
55 }
56
57 mmap_len = sizeof(struct decomp) + decomp_len;
58 decomp = mmap(NULL, mmap_len, PROT_READ|PROT_WRITE,
59 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
60 if (decomp == MAP_FAILED) {
61 pr_err("Couldn't allocate memory for decompression\n");
62 return -1;
63 }
64
65 decomp->file_pos = file_offset;
66 decomp->file_path = file_path;
67 decomp->mmap_len = mmap_len;
68 decomp->head = 0;
69
70 if (decomp_last_rem) {
71 memcpy(decomp->data, &(decomp_last->data[decomp_last->head]), decomp_last_rem);
72 decomp->size = decomp_last_rem;
73 }
74
75 src = (void *)event + sizeof(struct perf_record_compressed);
76 src_size = event->pack.header.size - sizeof(struct perf_record_compressed);
77
78 decomp_size = zstd_decompress_stream(session->active_decomp->zstd_decomp, src, src_size,
79 &(decomp->data[decomp_last_rem]), decomp_len - decomp_last_rem);
80 if (!decomp_size) {
81 munmap(decomp, mmap_len);
82 pr_err("Couldn't decompress data\n");
83 return -1;
84 }
85
86 decomp->size += decomp_size;
87
88 if (session->active_decomp->decomp == NULL)
89 session->active_decomp->decomp = decomp;
90 else
91 session->active_decomp->decomp_last->next = decomp;
92
93 session->active_decomp->decomp_last = decomp;
94
95 pr_debug("decomp (B): %zd to %zd\n", src_size, decomp_size);
96
97 return 0;
98 }
99 #else /* !HAVE_ZSTD_SUPPORT */
100 #define perf_session__process_compressed_event perf_session__process_compressed_event_stub
101 #endif
102
103 static int perf_session__deliver_event(struct perf_session *session,
104 union perf_event *event,
105 struct perf_tool *tool,
106 u64 file_offset,
107 const char *file_path);
108
109 static int perf_session__open(struct perf_session *session, int repipe_fd)
110 {
111 struct perf_data *data = session->data;
112
113 if (perf_session__read_header(session, repipe_fd) < 0) {
114 pr_err("incompatible file format (rerun with -v to learn more)\n");
115 return -1;
116 }
117
118 if (perf_header__has_feat(&session->header, HEADER_AUXTRACE)) {
119 /* Auxiliary events may reference exited threads, hold onto dead ones. */
120 symbol_conf.keep_exited_threads = true;
121 }
122
123 if (perf_data__is_pipe(data))
124 return 0;
125
126 if (perf_header__has_feat(&session->header, HEADER_STAT))
127 return 0;
128
129 if (!evlist__valid_sample_type(session->evlist)) {
130 pr_err("non matching sample_type\n");
131 return -1;
132 }
133
134 if (!evlist__valid_sample_id_all(session->evlist)) {
135 pr_err("non matching sample_id_all\n");
136 return -1;
137 }
138
139 if (!evlist__valid_read_format(session->evlist)) {
140 pr_err("non matching read_format\n");
141 return -1;
142 }
143
144 return 0;
145 }
146
147 void perf_session__set_id_hdr_size(struct perf_session *session)
148 {
149 u16 id_hdr_size = evlist__id_hdr_size(session->evlist);
150
151 machines__set_id_hdr_size(&session->machines, id_hdr_size);
152 }
153
154 int perf_session__create_kernel_maps(struct perf_session *session)
155 {
156 int ret = machine__create_kernel_maps(&session->machines.host);
157
158 if (ret >= 0)
159 ret = machines__create_guest_kernel_maps(&session->machines);
160 return ret;
161 }
162
163 static void perf_session__destroy_kernel_maps(struct perf_session *session)
164 {
165 machines__destroy_kernel_maps(&session->machines);
166 }
167
168 static bool perf_session__has_comm_exec(struct perf_session *session)
169 {
170 struct evsel *evsel;
171
172 evlist__for_each_entry(session->evlist, evsel) {
173 if (evsel->core.attr.comm_exec)
174 return true;
175 }
176
177 return false;
178 }
179
180 static void perf_session__set_comm_exec(struct perf_session *session)
181 {
182 bool comm_exec = perf_session__has_comm_exec(session);
183
184 machines__set_comm_exec(&session->machines, comm_exec);
185 }
186
187 static int ordered_events__deliver_event(struct ordered_events *oe,
188 struct ordered_event *event)
189 {
190 struct perf_session *session = container_of(oe, struct perf_session,
191 ordered_events);
192
193 return perf_session__deliver_event(session, event->event,
194 session->tool, event->file_offset,
195 event->file_path);
196 }
197
198 struct perf_session *__perf_session__new(struct perf_data *data,
199 bool repipe, int repipe_fd,
200 struct perf_tool *tool)
201 {
202 int ret = -ENOMEM;
203 struct perf_session *session = zalloc(sizeof(*session));
204
205 if (!session)
206 goto out;
207
208 session->repipe = repipe;
209 session->tool = tool;
210 session->decomp_data.zstd_decomp = &session->zstd_data;
211 session->active_decomp = &session->decomp_data;
212 INIT_LIST_HEAD(&session->auxtrace_index);
213 machines__init(&session->machines);
214 ordered_events__init(&session->ordered_events,
215 ordered_events__deliver_event, NULL);
216
217 perf_env__init(&session->header.env);
218 if (data) {
219 ret = perf_data__open(data);
220 if (ret < 0)
221 goto out_delete;
222
223 session->data = data;
224
225 if (perf_data__is_read(data)) {
226 ret = perf_session__open(session, repipe_fd);
227 if (ret < 0)
228 goto out_delete;
229
230 /*
231 * set session attributes that are present in perf.data
232 * but not in pipe-mode.
233 */
234 if (!data->is_pipe) {
235 perf_session__set_id_hdr_size(session);
236 perf_session__set_comm_exec(session);
237 }
238
239 evlist__init_trace_event_sample_raw(session->evlist);
240
241 /* Open the directory data. */
242 if (data->is_dir) {
243 ret = perf_data__open_dir(data);
244 if (ret)
245 goto out_delete;
246 }
247
248 if (!symbol_conf.kallsyms_name &&
249 !symbol_conf.vmlinux_name)
250 symbol_conf.kallsyms_name = perf_data__kallsyms_name(data);
251 }
252 } else {
253 session->machines.host.env = &perf_env;
254 }
255
256 session->machines.host.single_address_space =
257 perf_env__single_address_space(session->machines.host.env);
258
259 if (!data || perf_data__is_write(data)) {
260 /*
261 * In O_RDONLY mode this will be performed when reading the
262 * kernel MMAP event, in perf_event__process_mmap().
263 */
264 if (perf_session__create_kernel_maps(session) < 0)
265 pr_warning("Cannot read kernel map\n");
266 }
267
268 /*
269 * In pipe-mode, evlist is empty until PERF_RECORD_HEADER_ATTR is
270 * processed, so evlist__sample_id_all is not meaningful here.
271 */
272 if ((!data || !data->is_pipe) && tool && tool->ordering_requires_timestamps &&
273 tool->ordered_events && !evlist__sample_id_all(session->evlist)) {
274 dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n");
275 tool->ordered_events = false;
276 }
277
278 return session;
279
280 out_delete:
281 perf_session__delete(session);
282 out:
283 return ERR_PTR(ret);
284 }
285
286 static void perf_decomp__release_events(struct decomp *next)
287 {
288 struct decomp *decomp;
289 size_t mmap_len;
290
291 do {
292 decomp = next;
293 if (decomp == NULL)
294 break;
295 next = decomp->next;
296 mmap_len = decomp->mmap_len;
297 munmap(decomp, mmap_len);
298 } while (1);
299 }
300
301 void perf_session__delete(struct perf_session *session)
302 {
303 if (session == NULL)
304 return;
305 auxtrace__free(session);
306 auxtrace_index__free(&session->auxtrace_index);
307 perf_session__destroy_kernel_maps(session);
308 perf_decomp__release_events(session->decomp_data.decomp);
309 perf_env__exit(&session->header.env);
310 machines__exit(&session->machines);
311 if (session->data) {
312 if (perf_data__is_read(session->data))
313 evlist__delete(session->evlist);
314 perf_data__close(session->data);
315 }
316 #ifdef HAVE_LIBTRACEEVENT
317 trace_event__cleanup(&session->tevent);
318 #endif
319 free(session);
320 }
321
322 static int process_event_synth_tracing_data_stub(struct perf_session *session
323 __maybe_unused,
324 union perf_event *event
325 __maybe_unused)
326 {
327 dump_printf(": unhandled!\n");
328 return 0;
329 }
330
331 static int process_event_synth_attr_stub(struct perf_tool *tool __maybe_unused,
332 union perf_event *event __maybe_unused,
333 struct evlist **pevlist
334 __maybe_unused)
335 {
336 dump_printf(": unhandled!\n");
337 return 0;
338 }
339
340 static int process_event_synth_event_update_stub(struct perf_tool *tool __maybe_unused,
341 union perf_event *event __maybe_unused,
342 struct evlist **pevlist
343 __maybe_unused)
344 {
345 if (dump_trace)
346 perf_event__fprintf_event_update(event, stdout);
347
348 dump_printf(": unhandled!\n");
349 return 0;
350 }
351
352 static int process_event_sample_stub(struct perf_tool *tool __maybe_unused,
353 union perf_event *event __maybe_unused,
354 struct perf_sample *sample __maybe_unused,
355 struct evsel *evsel __maybe_unused,
356 struct machine *machine __maybe_unused)
357 {
358 dump_printf(": unhandled!\n");
359 return 0;
360 }
361
362 static int process_event_stub(struct perf_tool *tool __maybe_unused,
363 union perf_event *event __maybe_unused,
364 struct perf_sample *sample __maybe_unused,
365 struct machine *machine __maybe_unused)
366 {
367 dump_printf(": unhandled!\n");
368 return 0;
369 }
370
371 static int process_finished_round_stub(struct perf_tool *tool __maybe_unused,
372 union perf_event *event __maybe_unused,
373 struct ordered_events *oe __maybe_unused)
374 {
375 dump_printf(": unhandled!\n");
376 return 0;
377 }
378
379 static int skipn(int fd, off_t n)
380 {
381 char buf[4096];
382 ssize_t ret;
383
384 while (n > 0) {
385 ret = read(fd, buf, min(n, (off_t)sizeof(buf)));
386 if (ret <= 0)
387 return ret;
388 n -= ret;
389 }
390
391 return 0;
392 }
393
394 static s64 process_event_auxtrace_stub(struct perf_session *session __maybe_unused,
395 union perf_event *event)
396 {
397 dump_printf(": unhandled!\n");
398 if (perf_data__is_pipe(session->data))
399 skipn(perf_data__fd(session->data), event->auxtrace.size);
400 return event->auxtrace.size;
401 }
402
403 static int process_event_op2_stub(struct perf_session *session __maybe_unused,
404 union perf_event *event __maybe_unused)
405 {
406 dump_printf(": unhandled!\n");
407 return 0;
408 }
409
410
411 static
412 int process_event_thread_map_stub(struct perf_session *session __maybe_unused,
413 union perf_event *event __maybe_unused)
414 {
415 if (dump_trace)
416 perf_event__fprintf_thread_map(event, stdout);
417
418 dump_printf(": unhandled!\n");
419 return 0;
420 }
421
422 static
423 int process_event_cpu_map_stub(struct perf_session *session __maybe_unused,
424 union perf_event *event __maybe_unused)
425 {
426 if (dump_trace)
427 perf_event__fprintf_cpu_map(event, stdout);
428
429 dump_printf(": unhandled!\n");
430 return 0;
431 }
432
433 static
434 int process_event_stat_config_stub(struct perf_session *session __maybe_unused,
435 union perf_event *event __maybe_unused)
436 {
437 if (dump_trace)
438 perf_event__fprintf_stat_config(event, stdout);
439
440 dump_printf(": unhandled!\n");
441 return 0;
442 }
443
444 static int process_stat_stub(struct perf_session *perf_session __maybe_unused,
445 union perf_event *event)
446 {
447 if (dump_trace)
448 perf_event__fprintf_stat(event, stdout);
449
450 dump_printf(": unhandled!\n");
451 return 0;
452 }
453
454 static int process_stat_round_stub(struct perf_session *perf_session __maybe_unused,
455 union perf_event *event)
456 {
457 if (dump_trace)
458 perf_event__fprintf_stat_round(event, stdout);
459
460 dump_printf(": unhandled!\n");
461 return 0;
462 }
463
464 static int process_event_time_conv_stub(struct perf_session *perf_session __maybe_unused,
465 union perf_event *event)
466 {
467 if (dump_trace)
468 perf_event__fprintf_time_conv(event, stdout);
469
470 dump_printf(": unhandled!\n");
471 return 0;
472 }
473
474 static int perf_session__process_compressed_event_stub(struct perf_session *session __maybe_unused,
475 union perf_event *event __maybe_unused,
476 u64 file_offset __maybe_unused,
477 const char *file_path __maybe_unused)
478 {
479 dump_printf(": unhandled!\n");
480 return 0;
481 }
482
483 void perf_tool__fill_defaults(struct perf_tool *tool)
484 {
485 if (tool->sample == NULL)
486 tool->sample = process_event_sample_stub;
487 if (tool->mmap == NULL)
488 tool->mmap = process_event_stub;
489 if (tool->mmap2 == NULL)
490 tool->mmap2 = process_event_stub;
491 if (tool->comm == NULL)
492 tool->comm = process_event_stub;
493 if (tool->namespaces == NULL)
494 tool->namespaces = process_event_stub;
495 if (tool->cgroup == NULL)
496 tool->cgroup = process_event_stub;
497 if (tool->fork == NULL)
498 tool->fork = process_event_stub;
499 if (tool->exit == NULL)
500 tool->exit = process_event_stub;
501 if (tool->lost == NULL)
502 tool->lost = perf_event__process_lost;
503 if (tool->lost_samples == NULL)
504 tool->lost_samples = perf_event__process_lost_samples;
505 if (tool->aux == NULL)
506 tool->aux = perf_event__process_aux;
507 if (tool->itrace_start == NULL)
508 tool->itrace_start = perf_event__process_itrace_start;
509 if (tool->context_switch == NULL)
510 tool->context_switch = perf_event__process_switch;
511 if (tool->ksymbol == NULL)
512 tool->ksymbol = perf_event__process_ksymbol;
513 if (tool->bpf == NULL)
514 tool->bpf = perf_event__process_bpf;
515 if (tool->text_poke == NULL)
516 tool->text_poke = perf_event__process_text_poke;
517 if (tool->aux_output_hw_id == NULL)
518 tool->aux_output_hw_id = perf_event__process_aux_output_hw_id;
519 if (tool->read == NULL)
520 tool->read = process_event_sample_stub;
521 if (tool->throttle == NULL)
522 tool->throttle = process_event_stub;
523 if (tool->unthrottle == NULL)
524 tool->unthrottle = process_event_stub;
525 if (tool->attr == NULL)
526 tool->attr = process_event_synth_attr_stub;
527 if (tool->event_update == NULL)
528 tool->event_update = process_event_synth_event_update_stub;
529 if (tool->tracing_data == NULL)
530 tool->tracing_data = process_event_synth_tracing_data_stub;
531 if (tool->build_id == NULL)
532 tool->build_id = process_event_op2_stub;
533 if (tool->finished_round == NULL) {
534 if (tool->ordered_events)
535 tool->finished_round = perf_event__process_finished_round;
536 else
537 tool->finished_round = process_finished_round_stub;
538 }
539 if (tool->id_index == NULL)
540 tool->id_index = process_event_op2_stub;
541 if (tool->auxtrace_info == NULL)
542 tool->auxtrace_info = process_event_op2_stub;
543 if (tool->auxtrace == NULL)
544 tool->auxtrace = process_event_auxtrace_stub;
545 if (tool->auxtrace_error == NULL)
546 tool->auxtrace_error = process_event_op2_stub;
547 if (tool->thread_map == NULL)
548 tool->thread_map = process_event_thread_map_stub;
549 if (tool->cpu_map == NULL)
550 tool->cpu_map = process_event_cpu_map_stub;
551 if (tool->stat_config == NULL)
552 tool->stat_config = process_event_stat_config_stub;
553 if (tool->stat == NULL)
554 tool->stat = process_stat_stub;
555 if (tool->stat_round == NULL)
556 tool->stat_round = process_stat_round_stub;
557 if (tool->time_conv == NULL)
558 tool->time_conv = process_event_time_conv_stub;
559 if (tool->feature == NULL)
560 tool->feature = process_event_op2_stub;
561 if (tool->compressed == NULL)
562 tool->compressed = perf_session__process_compressed_event;
563 if (tool->finished_init == NULL)
564 tool->finished_init = process_event_op2_stub;
565 }
566
567 static void swap_sample_id_all(union perf_event *event, void *data)
568 {
569 void *end = (void *) event + event->header.size;
570 int size = end - data;
571
572 BUG_ON(size % sizeof(u64));
573 mem_bswap_64(data, size);
574 }
575
576 static void perf_event__all64_swap(union perf_event *event,
577 bool sample_id_all __maybe_unused)
578 {
579 struct perf_event_header *hdr = &event->header;
580 mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr));
581 }
582
583 static void perf_event__comm_swap(union perf_event *event, bool sample_id_all)
584 {
585 event->comm.pid = bswap_32(event->comm.pid);
586 event->comm.tid = bswap_32(event->comm.tid);
587
588 if (sample_id_all) {
589 void *data = &event->comm.comm;
590
591 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
592 swap_sample_id_all(event, data);
593 }
594 }
595
596 static void perf_event__mmap_swap(union perf_event *event,
597 bool sample_id_all)
598 {
599 event->mmap.pid = bswap_32(event->mmap.pid);
600 event->mmap.tid = bswap_32(event->mmap.tid);
601 event->mmap.start = bswap_64(event->mmap.start);
602 event->mmap.len = bswap_64(event->mmap.len);
603 event->mmap.pgoff = bswap_64(event->mmap.pgoff);
604
605 if (sample_id_all) {
606 void *data = &event->mmap.filename;
607
608 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
609 swap_sample_id_all(event, data);
610 }
611 }
612
613 static void perf_event__mmap2_swap(union perf_event *event,
614 bool sample_id_all)
615 {
616 event->mmap2.pid = bswap_32(event->mmap2.pid);
617 event->mmap2.tid = bswap_32(event->mmap2.tid);
618 event->mmap2.start = bswap_64(event->mmap2.start);
619 event->mmap2.len = bswap_64(event->mmap2.len);
620 event->mmap2.pgoff = bswap_64(event->mmap2.pgoff);
621
622 if (!(event->header.misc & PERF_RECORD_MISC_MMAP_BUILD_ID)) {
623 event->mmap2.maj = bswap_32(event->mmap2.maj);
624 event->mmap2.min = bswap_32(event->mmap2.min);
625 event->mmap2.ino = bswap_64(event->mmap2.ino);
626 event->mmap2.ino_generation = bswap_64(event->mmap2.ino_generation);
627 }
628
629 if (sample_id_all) {
630 void *data = &event->mmap2.filename;
631
632 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
633 swap_sample_id_all(event, data);
634 }
635 }
636 static void perf_event__task_swap(union perf_event *event, bool sample_id_all)
637 {
638 event->fork.pid = bswap_32(event->fork.pid);
639 event->fork.tid = bswap_32(event->fork.tid);
640 event->fork.ppid = bswap_32(event->fork.ppid);
641 event->fork.ptid = bswap_32(event->fork.ptid);
642 event->fork.time = bswap_64(event->fork.time);
643
644 if (sample_id_all)
645 swap_sample_id_all(event, &event->fork + 1);
646 }
647
648 static void perf_event__read_swap(union perf_event *event, bool sample_id_all)
649 {
650 event->read.pid = bswap_32(event->read.pid);
651 event->read.tid = bswap_32(event->read.tid);
652 event->read.value = bswap_64(event->read.value);
653 event->read.time_enabled = bswap_64(event->read.time_enabled);
654 event->read.time_running = bswap_64(event->read.time_running);
655 event->read.id = bswap_64(event->read.id);
656
657 if (sample_id_all)
658 swap_sample_id_all(event, &event->read + 1);
659 }
660
661 static void perf_event__aux_swap(union perf_event *event, bool sample_id_all)
662 {
663 event->aux.aux_offset = bswap_64(event->aux.aux_offset);
664 event->aux.aux_size = bswap_64(event->aux.aux_size);
665 event->aux.flags = bswap_64(event->aux.flags);
666
667 if (sample_id_all)
668 swap_sample_id_all(event, &event->aux + 1);
669 }
670
671 static void perf_event__itrace_start_swap(union perf_event *event,
672 bool sample_id_all)
673 {
674 event->itrace_start.pid = bswap_32(event->itrace_start.pid);
675 event->itrace_start.tid = bswap_32(event->itrace_start.tid);
676
677 if (sample_id_all)
678 swap_sample_id_all(event, &event->itrace_start + 1);
679 }
680
681 static void perf_event__switch_swap(union perf_event *event, bool sample_id_all)
682 {
683 if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE) {
684 event->context_switch.next_prev_pid =
685 bswap_32(event->context_switch.next_prev_pid);
686 event->context_switch.next_prev_tid =
687 bswap_32(event->context_switch.next_prev_tid);
688 }
689
690 if (sample_id_all)
691 swap_sample_id_all(event, &event->context_switch + 1);
692 }
693
694 static void perf_event__text_poke_swap(union perf_event *event, bool sample_id_all)
695 {
696 event->text_poke.addr = bswap_64(event->text_poke.addr);
697 event->text_poke.old_len = bswap_16(event->text_poke.old_len);
698 event->text_poke.new_len = bswap_16(event->text_poke.new_len);
699
700 if (sample_id_all) {
701 size_t len = sizeof(event->text_poke.old_len) +
702 sizeof(event->text_poke.new_len) +
703 event->text_poke.old_len +
704 event->text_poke.new_len;
705 void *data = &event->text_poke.old_len;
706
707 data += PERF_ALIGN(len, sizeof(u64));
708 swap_sample_id_all(event, data);
709 }
710 }
711
712 static void perf_event__throttle_swap(union perf_event *event,
713 bool sample_id_all)
714 {
715 event->throttle.time = bswap_64(event->throttle.time);
716 event->throttle.id = bswap_64(event->throttle.id);
717 event->throttle.stream_id = bswap_64(event->throttle.stream_id);
718
719 if (sample_id_all)
720 swap_sample_id_all(event, &event->throttle + 1);
721 }
722
723 static void perf_event__namespaces_swap(union perf_event *event,
724 bool sample_id_all)
725 {
726 u64 i;
727
728 event->namespaces.pid = bswap_32(event->namespaces.pid);
729 event->namespaces.tid = bswap_32(event->namespaces.tid);
730 event->namespaces.nr_namespaces = bswap_64(event->namespaces.nr_namespaces);
731
732 for (i = 0; i < event->namespaces.nr_namespaces; i++) {
733 struct perf_ns_link_info *ns = &event->namespaces.link_info[i];
734
735 ns->dev = bswap_64(ns->dev);
736 ns->ino = bswap_64(ns->ino);
737 }
738
739 if (sample_id_all)
740 swap_sample_id_all(event, &event->namespaces.link_info[i]);
741 }
742
743 static void perf_event__cgroup_swap(union perf_event *event, bool sample_id_all)
744 {
745 event->cgroup.id = bswap_64(event->cgroup.id);
746
747 if (sample_id_all) {
748 void *data = &event->cgroup.path;
749
750 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
751 swap_sample_id_all(event, data);
752 }
753 }
754
755 static u8 revbyte(u8 b)
756 {
757 int rev = (b >> 4) | ((b & 0xf) << 4);
758 rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2);
759 rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1);
760 return (u8) rev;
761 }
762
763 /*
764 * XXX this is hack in attempt to carry flags bitfield
765 * through endian village. ABI says:
766 *
767 * Bit-fields are allocated from right to left (least to most significant)
768 * on little-endian implementations and from left to right (most to least
769 * significant) on big-endian implementations.
770 *
771 * The above seems to be byte specific, so we need to reverse each
772 * byte of the bitfield. 'Internet' also says this might be implementation
773 * specific and we probably need proper fix and carry perf_event_attr
774 * bitfield flags in separate data file FEAT_ section. Thought this seems
775 * to work for now.
776 */
777 static void swap_bitfield(u8 *p, unsigned len)
778 {
779 unsigned i;
780
781 for (i = 0; i < len; i++) {
782 *p = revbyte(*p);
783 p++;
784 }
785 }
786
787 /* exported for swapping attributes in file header */
788 void perf_event__attr_swap(struct perf_event_attr *attr)
789 {
790 attr->type = bswap_32(attr->type);
791 attr->size = bswap_32(attr->size);
792
793 #define bswap_safe(f, n) \
794 (attr->size > (offsetof(struct perf_event_attr, f) + \
795 sizeof(attr->f) * (n)))
796 #define bswap_field(f, sz) \
797 do { \
798 if (bswap_safe(f, 0)) \
799 attr->f = bswap_##sz(attr->f); \
800 } while(0)
801 #define bswap_field_16(f) bswap_field(f, 16)
802 #define bswap_field_32(f) bswap_field(f, 32)
803 #define bswap_field_64(f) bswap_field(f, 64)
804
805 bswap_field_64(config);
806 bswap_field_64(sample_period);
807 bswap_field_64(sample_type);
808 bswap_field_64(read_format);
809 bswap_field_32(wakeup_events);
810 bswap_field_32(bp_type);
811 bswap_field_64(bp_addr);
812 bswap_field_64(bp_len);
813 bswap_field_64(branch_sample_type);
814 bswap_field_64(sample_regs_user);
815 bswap_field_32(sample_stack_user);
816 bswap_field_32(aux_watermark);
817 bswap_field_16(sample_max_stack);
818 bswap_field_32(aux_sample_size);
819
820 /*
821 * After read_format are bitfields. Check read_format because
822 * we are unable to use offsetof on bitfield.
823 */
824 if (bswap_safe(read_format, 1))
825 swap_bitfield((u8 *) (&attr->read_format + 1),
826 sizeof(u64));
827 #undef bswap_field_64
828 #undef bswap_field_32
829 #undef bswap_field
830 #undef bswap_safe
831 }
832
833 static void perf_event__hdr_attr_swap(union perf_event *event,
834 bool sample_id_all __maybe_unused)
835 {
836 size_t size;
837
838 perf_event__attr_swap(&event->attr.attr);
839
840 size = event->header.size;
841 size -= perf_record_header_attr_id(event) - (void *)event;
842 mem_bswap_64(perf_record_header_attr_id(event), size);
843 }
844
845 static void perf_event__event_update_swap(union perf_event *event,
846 bool sample_id_all __maybe_unused)
847 {
848 event->event_update.type = bswap_64(event->event_update.type);
849 event->event_update.id = bswap_64(event->event_update.id);
850 }
851
852 static void perf_event__event_type_swap(union perf_event *event,
853 bool sample_id_all __maybe_unused)
854 {
855 event->event_type.event_type.event_id =
856 bswap_64(event->event_type.event_type.event_id);
857 }
858
859 static void perf_event__tracing_data_swap(union perf_event *event,
860 bool sample_id_all __maybe_unused)
861 {
862 event->tracing_data.size = bswap_32(event->tracing_data.size);
863 }
864
865 static void perf_event__auxtrace_info_swap(union perf_event *event,
866 bool sample_id_all __maybe_unused)
867 {
868 size_t size;
869
870 event->auxtrace_info.type = bswap_32(event->auxtrace_info.type);
871
872 size = event->header.size;
873 size -= (void *)&event->auxtrace_info.priv - (void *)event;
874 mem_bswap_64(event->auxtrace_info.priv, size);
875 }
876
877 static void perf_event__auxtrace_swap(union perf_event *event,
878 bool sample_id_all __maybe_unused)
879 {
880 event->auxtrace.size = bswap_64(event->auxtrace.size);
881 event->auxtrace.offset = bswap_64(event->auxtrace.offset);
882 event->auxtrace.reference = bswap_64(event->auxtrace.reference);
883 event->auxtrace.idx = bswap_32(event->auxtrace.idx);
884 event->auxtrace.tid = bswap_32(event->auxtrace.tid);
885 event->auxtrace.cpu = bswap_32(event->auxtrace.cpu);
886 }
887
888 static void perf_event__auxtrace_error_swap(union perf_event *event,
889 bool sample_id_all __maybe_unused)
890 {
891 event->auxtrace_error.type = bswap_32(event->auxtrace_error.type);
892 event->auxtrace_error.code = bswap_32(event->auxtrace_error.code);
893 event->auxtrace_error.cpu = bswap_32(event->auxtrace_error.cpu);
894 event->auxtrace_error.pid = bswap_32(event->auxtrace_error.pid);
895 event->auxtrace_error.tid = bswap_32(event->auxtrace_error.tid);
896 event->auxtrace_error.fmt = bswap_32(event->auxtrace_error.fmt);
897 event->auxtrace_error.ip = bswap_64(event->auxtrace_error.ip);
898 if (event->auxtrace_error.fmt)
899 event->auxtrace_error.time = bswap_64(event->auxtrace_error.time);
900 if (event->auxtrace_error.fmt >= 2) {
901 event->auxtrace_error.machine_pid = bswap_32(event->auxtrace_error.machine_pid);
902 event->auxtrace_error.vcpu = bswap_32(event->auxtrace_error.vcpu);
903 }
904 }
905
906 static void perf_event__thread_map_swap(union perf_event *event,
907 bool sample_id_all __maybe_unused)
908 {
909 unsigned i;
910
911 event->thread_map.nr = bswap_64(event->thread_map.nr);
912
913 for (i = 0; i < event->thread_map.nr; i++)
914 event->thread_map.entries[i].pid = bswap_64(event->thread_map.entries[i].pid);
915 }
916
917 static void perf_event__cpu_map_swap(union perf_event *event,
918 bool sample_id_all __maybe_unused)
919 {
920 struct perf_record_cpu_map_data *data = &event->cpu_map.data;
921
922 data->type = bswap_16(data->type);
923
924 switch (data->type) {
925 case PERF_CPU_MAP__CPUS:
926 data->cpus_data.nr = bswap_16(data->cpus_data.nr);
927
928 for (unsigned i = 0; i < data->cpus_data.nr; i++)
929 data->cpus_data.cpu[i] = bswap_16(data->cpus_data.cpu[i]);
930 break;
931 case PERF_CPU_MAP__MASK:
932 data->mask32_data.long_size = bswap_16(data->mask32_data.long_size);
933
934 switch (data->mask32_data.long_size) {
935 case 4:
936 data->mask32_data.nr = bswap_16(data->mask32_data.nr);
937 for (unsigned i = 0; i < data->mask32_data.nr; i++)
938 data->mask32_data.mask[i] = bswap_32(data->mask32_data.mask[i]);
939 break;
940 case 8:
941 data->mask64_data.nr = bswap_16(data->mask64_data.nr);
942 for (unsigned i = 0; i < data->mask64_data.nr; i++)
943 data->mask64_data.mask[i] = bswap_64(data->mask64_data.mask[i]);
944 break;
945 default:
946 pr_err("cpu_map swap: unsupported long size\n");
947 }
948 break;
949 case PERF_CPU_MAP__RANGE_CPUS:
950 data->range_cpu_data.start_cpu = bswap_16(data->range_cpu_data.start_cpu);
951 data->range_cpu_data.end_cpu = bswap_16(data->range_cpu_data.end_cpu);
952 break;
953 default:
954 break;
955 }
956 }
957
958 static void perf_event__stat_config_swap(union perf_event *event,
959 bool sample_id_all __maybe_unused)
960 {
961 u64 size;
962
963 size = bswap_64(event->stat_config.nr) * sizeof(event->stat_config.data[0]);
964 size += 1; /* nr item itself */
965 mem_bswap_64(&event->stat_config.nr, size);
966 }
967
968 static void perf_event__stat_swap(union perf_event *event,
969 bool sample_id_all __maybe_unused)
970 {
971 event->stat.id = bswap_64(event->stat.id);
972 event->stat.thread = bswap_32(event->stat.thread);
973 event->stat.cpu = bswap_32(event->stat.cpu);
974 event->stat.val = bswap_64(event->stat.val);
975 event->stat.ena = bswap_64(event->stat.ena);
976 event->stat.run = bswap_64(event->stat.run);
977 }
978
979 static void perf_event__stat_round_swap(union perf_event *event,
980 bool sample_id_all __maybe_unused)
981 {
982 event->stat_round.type = bswap_64(event->stat_round.type);
983 event->stat_round.time = bswap_64(event->stat_round.time);
984 }
985
986 static void perf_event__time_conv_swap(union perf_event *event,
987 bool sample_id_all __maybe_unused)
988 {
989 event->time_conv.time_shift = bswap_64(event->time_conv.time_shift);
990 event->time_conv.time_mult = bswap_64(event->time_conv.time_mult);
991 event->time_conv.time_zero = bswap_64(event->time_conv.time_zero);
992
993 if (event_contains(event->time_conv, time_cycles)) {
994 event->time_conv.time_cycles = bswap_64(event->time_conv.time_cycles);
995 event->time_conv.time_mask = bswap_64(event->time_conv.time_mask);
996 }
997 }
998
999 typedef void (*perf_event__swap_op)(union perf_event *event,
1000 bool sample_id_all);
1001
1002 static perf_event__swap_op perf_event__swap_ops[] = {
1003 [PERF_RECORD_MMAP] = perf_event__mmap_swap,
1004 [PERF_RECORD_MMAP2] = perf_event__mmap2_swap,
1005 [PERF_RECORD_COMM] = perf_event__comm_swap,
1006 [PERF_RECORD_FORK] = perf_event__task_swap,
1007 [PERF_RECORD_EXIT] = perf_event__task_swap,
1008 [PERF_RECORD_LOST] = perf_event__all64_swap,
1009 [PERF_RECORD_READ] = perf_event__read_swap,
1010 [PERF_RECORD_THROTTLE] = perf_event__throttle_swap,
1011 [PERF_RECORD_UNTHROTTLE] = perf_event__throttle_swap,
1012 [PERF_RECORD_SAMPLE] = perf_event__all64_swap,
1013 [PERF_RECORD_AUX] = perf_event__aux_swap,
1014 [PERF_RECORD_ITRACE_START] = perf_event__itrace_start_swap,
1015 [PERF_RECORD_LOST_SAMPLES] = perf_event__all64_swap,
1016 [PERF_RECORD_SWITCH] = perf_event__switch_swap,
1017 [PERF_RECORD_SWITCH_CPU_WIDE] = perf_event__switch_swap,
1018 [PERF_RECORD_NAMESPACES] = perf_event__namespaces_swap,
1019 [PERF_RECORD_CGROUP] = perf_event__cgroup_swap,
1020 [PERF_RECORD_TEXT_POKE] = perf_event__text_poke_swap,
1021 [PERF_RECORD_AUX_OUTPUT_HW_ID] = perf_event__all64_swap,
1022 [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap,
1023 [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap,
1024 [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap,
1025 [PERF_RECORD_HEADER_BUILD_ID] = NULL,
1026 [PERF_RECORD_ID_INDEX] = perf_event__all64_swap,
1027 [PERF_RECORD_AUXTRACE_INFO] = perf_event__auxtrace_info_swap,
1028 [PERF_RECORD_AUXTRACE] = perf_event__auxtrace_swap,
1029 [PERF_RECORD_AUXTRACE_ERROR] = perf_event__auxtrace_error_swap,
1030 [PERF_RECORD_THREAD_MAP] = perf_event__thread_map_swap,
1031 [PERF_RECORD_CPU_MAP] = perf_event__cpu_map_swap,
1032 [PERF_RECORD_STAT_CONFIG] = perf_event__stat_config_swap,
1033 [PERF_RECORD_STAT] = perf_event__stat_swap,
1034 [PERF_RECORD_STAT_ROUND] = perf_event__stat_round_swap,
1035 [PERF_RECORD_EVENT_UPDATE] = perf_event__event_update_swap,
1036 [PERF_RECORD_TIME_CONV] = perf_event__time_conv_swap,
1037 [PERF_RECORD_HEADER_MAX] = NULL,
1038 };
1039
1040 /*
1041 * When perf record finishes a pass on every buffers, it records this pseudo
1042 * event.
1043 * We record the max timestamp t found in the pass n.
1044 * Assuming these timestamps are monotonic across cpus, we know that if
1045 * a buffer still has events with timestamps below t, they will be all
1046 * available and then read in the pass n + 1.
1047 * Hence when we start to read the pass n + 2, we can safely flush every
1048 * events with timestamps below t.
1049 *
1050 * ============ PASS n =================
1051 * CPU 0 | CPU 1
1052 * |
1053 * cnt1 timestamps | cnt2 timestamps
1054 * 1 | 2
1055 * 2 | 3
1056 * - | 4 <--- max recorded
1057 *
1058 * ============ PASS n + 1 ==============
1059 * CPU 0 | CPU 1
1060 * |
1061 * cnt1 timestamps | cnt2 timestamps
1062 * 3 | 5
1063 * 4 | 6
1064 * 5 | 7 <---- max recorded
1065 *
1066 * Flush every events below timestamp 4
1067 *
1068 * ============ PASS n + 2 ==============
1069 * CPU 0 | CPU 1
1070 * |
1071 * cnt1 timestamps | cnt2 timestamps
1072 * 6 | 8
1073 * 7 | 9
1074 * - | 10
1075 *
1076 * Flush every events below timestamp 7
1077 * etc...
1078 */
1079 int perf_event__process_finished_round(struct perf_tool *tool __maybe_unused,
1080 union perf_event *event __maybe_unused,
1081 struct ordered_events *oe)
1082 {
1083 if (dump_trace)
1084 fprintf(stdout, "\n");
1085 return ordered_events__flush(oe, OE_FLUSH__ROUND);
1086 }
1087
1088 int perf_session__queue_event(struct perf_session *s, union perf_event *event,
1089 u64 timestamp, u64 file_offset, const char *file_path)
1090 {
1091 return ordered_events__queue(&s->ordered_events, event, timestamp, file_offset, file_path);
1092 }
1093
1094 static void callchain__lbr_callstack_printf(struct perf_sample *sample)
1095 {
1096 struct ip_callchain *callchain = sample->callchain;
1097 struct branch_stack *lbr_stack = sample->branch_stack;
1098 struct branch_entry *entries = perf_sample__branch_entries(sample);
1099 u64 kernel_callchain_nr = callchain->nr;
1100 unsigned int i;
1101
1102 for (i = 0; i < kernel_callchain_nr; i++) {
1103 if (callchain->ips[i] == PERF_CONTEXT_USER)
1104 break;
1105 }
1106
1107 if ((i != kernel_callchain_nr) && lbr_stack->nr) {
1108 u64 total_nr;
1109 /*
1110 * LBR callstack can only get user call chain,
1111 * i is kernel call chain number,
1112 * 1 is PERF_CONTEXT_USER.
1113 *
1114 * The user call chain is stored in LBR registers.
1115 * LBR are pair registers. The caller is stored
1116 * in "from" register, while the callee is stored
1117 * in "to" register.
1118 * For example, there is a call stack
1119 * "A"->"B"->"C"->"D".
1120 * The LBR registers will be recorded like
1121 * "C"->"D", "B"->"C", "A"->"B".
1122 * So only the first "to" register and all "from"
1123 * registers are needed to construct the whole stack.
1124 */
1125 total_nr = i + 1 + lbr_stack->nr + 1;
1126 kernel_callchain_nr = i + 1;
1127
1128 printf("... LBR call chain: nr:%" PRIu64 "\n", total_nr);
1129
1130 for (i = 0; i < kernel_callchain_nr; i++)
1131 printf("..... %2d: %016" PRIx64 "\n",
1132 i, callchain->ips[i]);
1133
1134 printf("..... %2d: %016" PRIx64 "\n",
1135 (int)(kernel_callchain_nr), entries[0].to);
1136 for (i = 0; i < lbr_stack->nr; i++)
1137 printf("..... %2d: %016" PRIx64 "\n",
1138 (int)(i + kernel_callchain_nr + 1), entries[i].from);
1139 }
1140 }
1141
1142 static void callchain__printf(struct evsel *evsel,
1143 struct perf_sample *sample)
1144 {
1145 unsigned int i;
1146 struct ip_callchain *callchain = sample->callchain;
1147
1148 if (evsel__has_branch_callstack(evsel))
1149 callchain__lbr_callstack_printf(sample);
1150
1151 printf("... FP chain: nr:%" PRIu64 "\n", callchain->nr);
1152
1153 for (i = 0; i < callchain->nr; i++)
1154 printf("..... %2d: %016" PRIx64 "\n",
1155 i, callchain->ips[i]);
1156 }
1157
1158 static void branch_stack__printf(struct perf_sample *sample,
1159 struct evsel *evsel)
1160 {
1161 struct branch_entry *entries = perf_sample__branch_entries(sample);
1162 bool callstack = evsel__has_branch_callstack(evsel);
1163 u64 *branch_stack_cntr = sample->branch_stack_cntr;
1164 struct perf_env *env = evsel__env(evsel);
1165 uint64_t i;
1166
1167 if (!callstack) {
1168 printf("%s: nr:%" PRIu64 "\n", "... branch stack", sample->branch_stack->nr);
1169 } else {
1170 /* the reason of adding 1 to nr is because after expanding
1171 * branch stack it generates nr + 1 callstack records. e.g.,
1172 * B()->C()
1173 * A()->B()
1174 * the final callstack should be:
1175 * C()
1176 * B()
1177 * A()
1178 */
1179 printf("%s: nr:%" PRIu64 "\n", "... branch callstack", sample->branch_stack->nr+1);
1180 }
1181
1182 for (i = 0; i < sample->branch_stack->nr; i++) {
1183 struct branch_entry *e = &entries[i];
1184
1185 if (!callstack) {
1186 printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 " %hu cycles %s%s%s%s %x %s %s\n",
1187 i, e->from, e->to,
1188 (unsigned short)e->flags.cycles,
1189 e->flags.mispred ? "M" : " ",
1190 e->flags.predicted ? "P" : " ",
1191 e->flags.abort ? "A" : " ",
1192 e->flags.in_tx ? "T" : " ",
1193 (unsigned)e->flags.reserved,
1194 get_branch_type(e),
1195 e->flags.spec ? branch_spec_desc(e->flags.spec) : "");
1196 } else {
1197 if (i == 0) {
1198 printf("..... %2"PRIu64": %016" PRIx64 "\n"
1199 "..... %2"PRIu64": %016" PRIx64 "\n",
1200 i, e->to, i+1, e->from);
1201 } else {
1202 printf("..... %2"PRIu64": %016" PRIx64 "\n", i+1, e->from);
1203 }
1204 }
1205 }
1206
1207 if (branch_stack_cntr) {
1208 printf("... branch stack counters: nr:%" PRIu64 " (counter width: %u max counter nr:%u)\n",
1209 sample->branch_stack->nr, env->br_cntr_width, env->br_cntr_nr);
1210 for (i = 0; i < sample->branch_stack->nr; i++)
1211 printf("..... %2"PRIu64": %016" PRIx64 "\n", i, branch_stack_cntr[i]);
1212 }
1213 }
1214
1215 static void regs_dump__printf(u64 mask, u64 *regs, const char *arch)
1216 {
1217 unsigned rid, i = 0;
1218
1219 for_each_set_bit(rid, (unsigned long *) &mask, sizeof(mask) * 8) {
1220 u64 val = regs[i++];
1221
1222 printf(".... %-5s 0x%016" PRIx64 "\n",
1223 perf_reg_name(rid, arch), val);
1224 }
1225 }
1226
1227 static const char *regs_abi[] = {
1228 [PERF_SAMPLE_REGS_ABI_NONE] = "none",
1229 [PERF_SAMPLE_REGS_ABI_32] = "32-bit",
1230 [PERF_SAMPLE_REGS_ABI_64] = "64-bit",
1231 };
1232
1233 static inline const char *regs_dump_abi(struct regs_dump *d)
1234 {
1235 if (d->abi > PERF_SAMPLE_REGS_ABI_64)
1236 return "unknown";
1237
1238 return regs_abi[d->abi];
1239 }
1240
1241 static void regs__printf(const char *type, struct regs_dump *regs, const char *arch)
1242 {
1243 u64 mask = regs->mask;
1244
1245 printf("... %s regs: mask 0x%" PRIx64 " ABI %s\n",
1246 type,
1247 mask,
1248 regs_dump_abi(regs));
1249
1250 regs_dump__printf(mask, regs->regs, arch);
1251 }
1252
1253 static void regs_user__printf(struct perf_sample *sample, const char *arch)
1254 {
1255 struct regs_dump *user_regs = &sample->user_regs;
1256
1257 if (user_regs->regs)
1258 regs__printf("user", user_regs, arch);
1259 }
1260
1261 static void regs_intr__printf(struct perf_sample *sample, const char *arch)
1262 {
1263 struct regs_dump *intr_regs = &sample->intr_regs;
1264
1265 if (intr_regs->regs)
1266 regs__printf("intr", intr_regs, arch);
1267 }
1268
1269 static void stack_user__printf(struct stack_dump *dump)
1270 {
1271 printf("... ustack: size %" PRIu64 ", offset 0x%x\n",
1272 dump->size, dump->offset);
1273 }
1274
1275 static void evlist__print_tstamp(struct evlist *evlist, union perf_event *event, struct perf_sample *sample)
1276 {
1277 u64 sample_type = __evlist__combined_sample_type(evlist);
1278
1279 if (event->header.type != PERF_RECORD_SAMPLE &&
1280 !evlist__sample_id_all(evlist)) {
1281 fputs("-1 -1 ", stdout);
1282 return;
1283 }
1284
1285 if ((sample_type & PERF_SAMPLE_CPU))
1286 printf("%u ", sample->cpu);
1287
1288 if (sample_type & PERF_SAMPLE_TIME)
1289 printf("%" PRIu64 " ", sample->time);
1290 }
1291
1292 static void sample_read__printf(struct perf_sample *sample, u64 read_format)
1293 {
1294 printf("... sample_read:\n");
1295
1296 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
1297 printf("...... time enabled %016" PRIx64 "\n",
1298 sample->read.time_enabled);
1299
1300 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
1301 printf("...... time running %016" PRIx64 "\n",
1302 sample->read.time_running);
1303
1304 if (read_format & PERF_FORMAT_GROUP) {
1305 struct sample_read_value *value = sample->read.group.values;
1306
1307 printf(".... group nr %" PRIu64 "\n", sample->read.group.nr);
1308
1309 sample_read_group__for_each(value, sample->read.group.nr, read_format) {
1310 printf("..... id %016" PRIx64
1311 ", value %016" PRIx64,
1312 value->id, value->value);
1313 if (read_format & PERF_FORMAT_LOST)
1314 printf(", lost %" PRIu64, value->lost);
1315 printf("\n");
1316 }
1317 } else {
1318 printf("..... id %016" PRIx64 ", value %016" PRIx64,
1319 sample->read.one.id, sample->read.one.value);
1320 if (read_format & PERF_FORMAT_LOST)
1321 printf(", lost %" PRIu64, sample->read.one.lost);
1322 printf("\n");
1323 }
1324 }
1325
1326 static void dump_event(struct evlist *evlist, union perf_event *event,
1327 u64 file_offset, struct perf_sample *sample,
1328 const char *file_path)
1329 {
1330 if (!dump_trace)
1331 return;
1332
1333 printf("\n%#" PRIx64 "@%s [%#x]: event: %d\n",
1334 file_offset, file_path, event->header.size, event->header.type);
1335
1336 trace_event(event);
1337 if (event->header.type == PERF_RECORD_SAMPLE && evlist->trace_event_sample_raw)
1338 evlist->trace_event_sample_raw(evlist, event, sample);
1339
1340 if (sample)
1341 evlist__print_tstamp(evlist, event, sample);
1342
1343 printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset,
1344 event->header.size, perf_event__name(event->header.type));
1345 }
1346
1347 char *get_page_size_name(u64 size, char *str)
1348 {
1349 if (!size || !unit_number__scnprintf(str, PAGE_SIZE_NAME_LEN, size))
1350 snprintf(str, PAGE_SIZE_NAME_LEN, "%s", "N/A");
1351
1352 return str;
1353 }
1354
1355 static void dump_sample(struct evsel *evsel, union perf_event *event,
1356 struct perf_sample *sample, const char *arch)
1357 {
1358 u64 sample_type;
1359 char str[PAGE_SIZE_NAME_LEN];
1360
1361 if (!dump_trace)
1362 return;
1363
1364 printf("(IP, 0x%x): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n",
1365 event->header.misc, sample->pid, sample->tid, sample->ip,
1366 sample->period, sample->addr);
1367
1368 sample_type = evsel->core.attr.sample_type;
1369
1370 if (evsel__has_callchain(evsel))
1371 callchain__printf(evsel, sample);
1372
1373 if (evsel__has_br_stack(evsel))
1374 branch_stack__printf(sample, evsel);
1375
1376 if (sample_type & PERF_SAMPLE_REGS_USER)
1377 regs_user__printf(sample, arch);
1378
1379 if (sample_type & PERF_SAMPLE_REGS_INTR)
1380 regs_intr__printf(sample, arch);
1381
1382 if (sample_type & PERF_SAMPLE_STACK_USER)
1383 stack_user__printf(&sample->user_stack);
1384
1385 if (sample_type & PERF_SAMPLE_WEIGHT_TYPE) {
1386 printf("... weight: %" PRIu64 "", sample->weight);
1387 if (sample_type & PERF_SAMPLE_WEIGHT_STRUCT) {
1388 printf(",0x%"PRIx16"", sample->ins_lat);
1389 printf(",0x%"PRIx16"", sample->p_stage_cyc);
1390 }
1391 printf("\n");
1392 }
1393
1394 if (sample_type & PERF_SAMPLE_DATA_SRC)
1395 printf(" . data_src: 0x%"PRIx64"\n", sample->data_src);
1396
1397 if (sample_type & PERF_SAMPLE_PHYS_ADDR)
1398 printf(" .. phys_addr: 0x%"PRIx64"\n", sample->phys_addr);
1399
1400 if (sample_type & PERF_SAMPLE_DATA_PAGE_SIZE)
1401 printf(" .. data page size: %s\n", get_page_size_name(sample->data_page_size, str));
1402
1403 if (sample_type & PERF_SAMPLE_CODE_PAGE_SIZE)
1404 printf(" .. code page size: %s\n", get_page_size_name(sample->code_page_size, str));
1405
1406 if (sample_type & PERF_SAMPLE_TRANSACTION)
1407 printf("... transaction: %" PRIx64 "\n", sample->transaction);
1408
1409 if (sample_type & PERF_SAMPLE_READ)
1410 sample_read__printf(sample, evsel->core.attr.read_format);
1411 }
1412
1413 static void dump_read(struct evsel *evsel, union perf_event *event)
1414 {
1415 struct perf_record_read *read_event = &event->read;
1416 u64 read_format;
1417
1418 if (!dump_trace)
1419 return;
1420
1421 printf(": %d %d %s %" PRI_lu64 "\n", event->read.pid, event->read.tid,
1422 evsel__name(evsel), event->read.value);
1423
1424 if (!evsel)
1425 return;
1426
1427 read_format = evsel->core.attr.read_format;
1428
1429 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
1430 printf("... time enabled : %" PRI_lu64 "\n", read_event->time_enabled);
1431
1432 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
1433 printf("... time running : %" PRI_lu64 "\n", read_event->time_running);
1434
1435 if (read_format & PERF_FORMAT_ID)
1436 printf("... id : %" PRI_lu64 "\n", read_event->id);
1437
1438 if (read_format & PERF_FORMAT_LOST)
1439 printf("... lost : %" PRI_lu64 "\n", read_event->lost);
1440 }
1441
1442 static struct machine *machines__find_for_cpumode(struct machines *machines,
1443 union perf_event *event,
1444 struct perf_sample *sample)
1445 {
1446 if (perf_guest &&
1447 ((sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL) ||
1448 (sample->cpumode == PERF_RECORD_MISC_GUEST_USER))) {
1449 u32 pid;
1450
1451 if (sample->machine_pid)
1452 pid = sample->machine_pid;
1453 else if (event->header.type == PERF_RECORD_MMAP
1454 || event->header.type == PERF_RECORD_MMAP2)
1455 pid = event->mmap.pid;
1456 else
1457 pid = sample->pid;
1458
1459 /*
1460 * Guest code machine is created as needed and does not use
1461 * DEFAULT_GUEST_KERNEL_ID.
1462 */
1463 if (symbol_conf.guest_code)
1464 return machines__findnew(machines, pid);
1465
1466 return machines__find_guest(machines, pid);
1467 }
1468
1469 return &machines->host;
1470 }
1471
1472 static int deliver_sample_value(struct evlist *evlist,
1473 struct perf_tool *tool,
1474 union perf_event *event,
1475 struct perf_sample *sample,
1476 struct sample_read_value *v,
1477 struct machine *machine)
1478 {
1479 struct perf_sample_id *sid = evlist__id2sid(evlist, v->id);
1480 struct evsel *evsel;
1481
1482 if (sid) {
1483 sample->id = v->id;
1484 sample->period = v->value - sid->period;
1485 sid->period = v->value;
1486 }
1487
1488 if (!sid || sid->evsel == NULL) {
1489 ++evlist->stats.nr_unknown_id;
1490 return 0;
1491 }
1492
1493 /*
1494 * There's no reason to deliver sample
1495 * for zero period, bail out.
1496 */
1497 if (!sample->period)
1498 return 0;
1499
1500 evsel = container_of(sid->evsel, struct evsel, core);
1501 return tool->sample(tool, event, sample, evsel, machine);
1502 }
1503
1504 static int deliver_sample_group(struct evlist *evlist,
1505 struct perf_tool *tool,
1506 union perf_event *event,
1507 struct perf_sample *sample,
1508 struct machine *machine,
1509 u64 read_format)
1510 {
1511 int ret = -EINVAL;
1512 struct sample_read_value *v = sample->read.group.values;
1513
1514 if (tool->dont_split_sample_group)
1515 return deliver_sample_value(evlist, tool, event, sample, v, machine);
1516
1517 sample_read_group__for_each(v, sample->read.group.nr, read_format) {
1518 ret = deliver_sample_value(evlist, tool, event, sample, v,
1519 machine);
1520 if (ret)
1521 break;
1522 }
1523
1524 return ret;
1525 }
1526
1527 static int evlist__deliver_sample(struct evlist *evlist, struct perf_tool *tool,
1528 union perf_event *event, struct perf_sample *sample,
1529 struct evsel *evsel, struct machine *machine)
1530 {
1531 /* We know evsel != NULL. */
1532 u64 sample_type = evsel->core.attr.sample_type;
1533 u64 read_format = evsel->core.attr.read_format;
1534
1535 /* Standard sample delivery. */
1536 if (!(sample_type & PERF_SAMPLE_READ))
1537 return tool->sample(tool, event, sample, evsel, machine);
1538
1539 /* For PERF_SAMPLE_READ we have either single or group mode. */
1540 if (read_format & PERF_FORMAT_GROUP)
1541 return deliver_sample_group(evlist, tool, event, sample,
1542 machine, read_format);
1543 else
1544 return deliver_sample_value(evlist, tool, event, sample,
1545 &sample->read.one, machine);
1546 }
1547
1548 static int machines__deliver_event(struct machines *machines,
1549 struct evlist *evlist,
1550 union perf_event *event,
1551 struct perf_sample *sample,
1552 struct perf_tool *tool, u64 file_offset,
1553 const char *file_path)
1554 {
1555 struct evsel *evsel;
1556 struct machine *machine;
1557
1558 dump_event(evlist, event, file_offset, sample, file_path);
1559
1560 evsel = evlist__id2evsel(evlist, sample->id);
1561
1562 machine = machines__find_for_cpumode(machines, event, sample);
1563
1564 switch (event->header.type) {
1565 case PERF_RECORD_SAMPLE:
1566 if (evsel == NULL) {
1567 ++evlist->stats.nr_unknown_id;
1568 return 0;
1569 }
1570 if (machine == NULL) {
1571 ++evlist->stats.nr_unprocessable_samples;
1572 dump_sample(evsel, event, sample, perf_env__arch(NULL));
1573 return 0;
1574 }
1575 dump_sample(evsel, event, sample, perf_env__arch(machine->env));
1576 return evlist__deliver_sample(evlist, tool, event, sample, evsel, machine);
1577 case PERF_RECORD_MMAP:
1578 return tool->mmap(tool, event, sample, machine);
1579 case PERF_RECORD_MMAP2:
1580 if (event->header.misc & PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT)
1581 ++evlist->stats.nr_proc_map_timeout;
1582 return tool->mmap2(tool, event, sample, machine);
1583 case PERF_RECORD_COMM:
1584 return tool->comm(tool, event, sample, machine);
1585 case PERF_RECORD_NAMESPACES:
1586 return tool->namespaces(tool, event, sample, machine);
1587 case PERF_RECORD_CGROUP:
1588 return tool->cgroup(tool, event, sample, machine);
1589 case PERF_RECORD_FORK:
1590 return tool->fork(tool, event, sample, machine);
1591 case PERF_RECORD_EXIT:
1592 return tool->exit(tool, event, sample, machine);
1593 case PERF_RECORD_LOST:
1594 if (tool->lost == perf_event__process_lost)
1595 evlist->stats.total_lost += event->lost.lost;
1596 return tool->lost(tool, event, sample, machine);
1597 case PERF_RECORD_LOST_SAMPLES:
1598 if (tool->lost_samples == perf_event__process_lost_samples &&
1599 !(event->header.misc & PERF_RECORD_MISC_LOST_SAMPLES_BPF))
1600 evlist->stats.total_lost_samples += event->lost_samples.lost;
1601 return tool->lost_samples(tool, event, sample, machine);
1602 case PERF_RECORD_READ:
1603 dump_read(evsel, event);
1604 return tool->read(tool, event, sample, evsel, machine);
1605 case PERF_RECORD_THROTTLE:
1606 return tool->throttle(tool, event, sample, machine);
1607 case PERF_RECORD_UNTHROTTLE:
1608 return tool->unthrottle(tool, event, sample, machine);
1609 case PERF_RECORD_AUX:
1610 if (tool->aux == perf_event__process_aux) {
1611 if (event->aux.flags & PERF_AUX_FLAG_TRUNCATED)
1612 evlist->stats.total_aux_lost += 1;
1613 if (event->aux.flags & PERF_AUX_FLAG_PARTIAL)
1614 evlist->stats.total_aux_partial += 1;
1615 if (event->aux.flags & PERF_AUX_FLAG_COLLISION)
1616 evlist->stats.total_aux_collision += 1;
1617 }
1618 return tool->aux(tool, event, sample, machine);
1619 case PERF_RECORD_ITRACE_START:
1620 return tool->itrace_start(tool, event, sample, machine);
1621 case PERF_RECORD_SWITCH:
1622 case PERF_RECORD_SWITCH_CPU_WIDE:
1623 return tool->context_switch(tool, event, sample, machine);
1624 case PERF_RECORD_KSYMBOL:
1625 return tool->ksymbol(tool, event, sample, machine);
1626 case PERF_RECORD_BPF_EVENT:
1627 return tool->bpf(tool, event, sample, machine);
1628 case PERF_RECORD_TEXT_POKE:
1629 return tool->text_poke(tool, event, sample, machine);
1630 case PERF_RECORD_AUX_OUTPUT_HW_ID:
1631 return tool->aux_output_hw_id(tool, event, sample, machine);
1632 default:
1633 ++evlist->stats.nr_unknown_events;
1634 return -1;
1635 }
1636 }
1637
1638 static int perf_session__deliver_event(struct perf_session *session,
1639 union perf_event *event,
1640 struct perf_tool *tool,
1641 u64 file_offset,
1642 const char *file_path)
1643 {
1644 struct perf_sample sample;
1645 int ret = evlist__parse_sample(session->evlist, event, &sample);
1646
1647 if (ret) {
1648 pr_err("Can't parse sample, err = %d\n", ret);
1649 return ret;
1650 }
1651
1652 ret = auxtrace__process_event(session, event, &sample, tool);
1653 if (ret < 0)
1654 return ret;
1655 if (ret > 0)
1656 return 0;
1657
1658 ret = machines__deliver_event(&session->machines, session->evlist,
1659 event, &sample, tool, file_offset, file_path);
1660
1661 if (dump_trace && sample.aux_sample.size)
1662 auxtrace__dump_auxtrace_sample(session, &sample);
1663
1664 return ret;
1665 }
1666
1667 static s64 perf_session__process_user_event(struct perf_session *session,
1668 union perf_event *event,
1669 u64 file_offset,
1670 const char *file_path)
1671 {
1672 struct ordered_events *oe = &session->ordered_events;
1673 struct perf_tool *tool = session->tool;
1674 struct perf_sample sample = { .time = 0, };
1675 int fd = perf_data__fd(session->data);
1676 int err;
1677
1678 if (event->header.type != PERF_RECORD_COMPRESSED ||
1679 tool->compressed == perf_session__process_compressed_event_stub)
1680 dump_event(session->evlist, event, file_offset, &sample, file_path);
1681
1682 /* These events are processed right away */
1683 switch (event->header.type) {
1684 case PERF_RECORD_HEADER_ATTR:
1685 err = tool->attr(tool, event, &session->evlist);
1686 if (err == 0) {
1687 perf_session__set_id_hdr_size(session);
1688 perf_session__set_comm_exec(session);
1689 }
1690 return err;
1691 case PERF_RECORD_EVENT_UPDATE:
1692 return tool->event_update(tool, event, &session->evlist);
1693 case PERF_RECORD_HEADER_EVENT_TYPE:
1694 /*
1695 * Deprecated, but we need to handle it for sake
1696 * of old data files create in pipe mode.
1697 */
1698 return 0;
1699 case PERF_RECORD_HEADER_TRACING_DATA:
1700 /*
1701 * Setup for reading amidst mmap, but only when we
1702 * are in 'file' mode. The 'pipe' fd is in proper
1703 * place already.
1704 */
1705 if (!perf_data__is_pipe(session->data))
1706 lseek(fd, file_offset, SEEK_SET);
1707 return tool->tracing_data(session, event);
1708 case PERF_RECORD_HEADER_BUILD_ID:
1709 return tool->build_id(session, event);
1710 case PERF_RECORD_FINISHED_ROUND:
1711 return tool->finished_round(tool, event, oe);
1712 case PERF_RECORD_ID_INDEX:
1713 return tool->id_index(session, event);
1714 case PERF_RECORD_AUXTRACE_INFO:
1715 return tool->auxtrace_info(session, event);
1716 case PERF_RECORD_AUXTRACE:
1717 /*
1718 * Setup for reading amidst mmap, but only when we
1719 * are in 'file' mode. The 'pipe' fd is in proper
1720 * place already.
1721 */
1722 if (!perf_data__is_pipe(session->data))
1723 lseek(fd, file_offset + event->header.size, SEEK_SET);
1724 return tool->auxtrace(session, event);
1725 case PERF_RECORD_AUXTRACE_ERROR:
1726 perf_session__auxtrace_error_inc(session, event);
1727 return tool->auxtrace_error(session, event);
1728 case PERF_RECORD_THREAD_MAP:
1729 return tool->thread_map(session, event);
1730 case PERF_RECORD_CPU_MAP:
1731 return tool->cpu_map(session, event);
1732 case PERF_RECORD_STAT_CONFIG:
1733 return tool->stat_config(session, event);
1734 case PERF_RECORD_STAT:
1735 return tool->stat(session, event);
1736 case PERF_RECORD_STAT_ROUND:
1737 return tool->stat_round(session, event);
1738 case PERF_RECORD_TIME_CONV:
1739 session->time_conv = event->time_conv;
1740 return tool->time_conv(session, event);
1741 case PERF_RECORD_HEADER_FEATURE:
1742 return tool->feature(session, event);
1743 case PERF_RECORD_COMPRESSED:
1744 err = tool->compressed(session, event, file_offset, file_path);
1745 if (err)
1746 dump_event(session->evlist, event, file_offset, &sample, file_path);
1747 return err;
1748 case PERF_RECORD_FINISHED_INIT:
1749 return tool->finished_init(session, event);
1750 default:
1751 return -EINVAL;
1752 }
1753 }
1754
1755 int perf_session__deliver_synth_event(struct perf_session *session,
1756 union perf_event *event,
1757 struct perf_sample *sample)
1758 {
1759 struct evlist *evlist = session->evlist;
1760 struct perf_tool *tool = session->tool;
1761
1762 events_stats__inc(&evlist->stats, event->header.type);
1763
1764 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
1765 return perf_session__process_user_event(session, event, 0, NULL);
1766
1767 return machines__deliver_event(&session->machines, evlist, event, sample, tool, 0, NULL);
1768 }
1769
1770 static void event_swap(union perf_event *event, bool sample_id_all)
1771 {
1772 perf_event__swap_op swap;
1773
1774 swap = perf_event__swap_ops[event->header.type];
1775 if (swap)
1776 swap(event, sample_id_all);
1777 }
1778
1779 int perf_session__peek_event(struct perf_session *session, off_t file_offset,
1780 void *buf, size_t buf_sz,
1781 union perf_event **event_ptr,
1782 struct perf_sample *sample)
1783 {
1784 union perf_event *event;
1785 size_t hdr_sz, rest;
1786 int fd;
1787
1788 if (session->one_mmap && !session->header.needs_swap) {
1789 event = file_offset - session->one_mmap_offset +
1790 session->one_mmap_addr;
1791 goto out_parse_sample;
1792 }
1793
1794 if (perf_data__is_pipe(session->data))
1795 return -1;
1796
1797 fd = perf_data__fd(session->data);
1798 hdr_sz = sizeof(struct perf_event_header);
1799
1800 if (buf_sz < hdr_sz)
1801 return -1;
1802
1803 if (lseek(fd, file_offset, SEEK_SET) == (off_t)-1 ||
1804 readn(fd, buf, hdr_sz) != (ssize_t)hdr_sz)
1805 return -1;
1806
1807 event = (union perf_event *)buf;
1808
1809 if (session->header.needs_swap)
1810 perf_event_header__bswap(&event->header);
1811
1812 if (event->header.size < hdr_sz || event->header.size > buf_sz)
1813 return -1;
1814
1815 buf += hdr_sz;
1816 rest = event->header.size - hdr_sz;
1817
1818 if (readn(fd, buf, rest) != (ssize_t)rest)
1819 return -1;
1820
1821 if (session->header.needs_swap)
1822 event_swap(event, evlist__sample_id_all(session->evlist));
1823
1824 out_parse_sample:
1825
1826 if (sample && event->header.type < PERF_RECORD_USER_TYPE_START &&
1827 evlist__parse_sample(session->evlist, event, sample))
1828 return -1;
1829
1830 *event_ptr = event;
1831
1832 return 0;
1833 }
1834
1835 int perf_session__peek_events(struct perf_session *session, u64 offset,
1836 u64 size, peek_events_cb_t cb, void *data)
1837 {
1838 u64 max_offset = offset + size;
1839 char buf[PERF_SAMPLE_MAX_SIZE];
1840 union perf_event *event;
1841 int err;
1842
1843 do {
1844 err = perf_session__peek_event(session, offset, buf,
1845 PERF_SAMPLE_MAX_SIZE, &event,
1846 NULL);
1847 if (err)
1848 return err;
1849
1850 err = cb(session, event, offset, data);
1851 if (err)
1852 return err;
1853
1854 offset += event->header.size;
1855 if (event->header.type == PERF_RECORD_AUXTRACE)
1856 offset += event->auxtrace.size;
1857
1858 } while (offset < max_offset);
1859
1860 return err;
1861 }
1862
1863 static s64 perf_session__process_event(struct perf_session *session,
1864 union perf_event *event, u64 file_offset,
1865 const char *file_path)
1866 {
1867 struct evlist *evlist = session->evlist;
1868 struct perf_tool *tool = session->tool;
1869 int ret;
1870
1871 if (session->header.needs_swap)
1872 event_swap(event, evlist__sample_id_all(evlist));
1873
1874 if (event->header.type >= PERF_RECORD_HEADER_MAX)
1875 return -EINVAL;
1876
1877 events_stats__inc(&evlist->stats, event->header.type);
1878
1879 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
1880 return perf_session__process_user_event(session, event, file_offset, file_path);
1881
1882 if (tool->ordered_events) {
1883 u64 timestamp = -1ULL;
1884
1885 ret = evlist__parse_sample_timestamp(evlist, event, ×tamp);
1886 if (ret && ret != -1)
1887 return ret;
1888
1889 ret = perf_session__queue_event(session, event, timestamp, file_offset, file_path);
1890 if (ret != -ETIME)
1891 return ret;
1892 }
1893
1894 return perf_session__deliver_event(session, event, tool, file_offset, file_path);
1895 }
1896
1897 void perf_event_header__bswap(struct perf_event_header *hdr)
1898 {
1899 hdr->type = bswap_32(hdr->type);
1900 hdr->misc = bswap_16(hdr->misc);
1901 hdr->size = bswap_16(hdr->size);
1902 }
1903
1904 struct thread *perf_session__findnew(struct perf_session *session, pid_t pid)
1905 {
1906 return machine__findnew_thread(&session->machines.host, -1, pid);
1907 }
1908
1909 int perf_session__register_idle_thread(struct perf_session *session)
1910 {
1911 struct thread *thread = machine__idle_thread(&session->machines.host);
1912
1913 /* machine__idle_thread() got the thread, so put it */
1914 thread__put(thread);
1915 return thread ? 0 : -1;
1916 }
1917
1918 static void
1919 perf_session__warn_order(const struct perf_session *session)
1920 {
1921 const struct ordered_events *oe = &session->ordered_events;
1922 struct evsel *evsel;
1923 bool should_warn = true;
1924
1925 evlist__for_each_entry(session->evlist, evsel) {
1926 if (evsel->core.attr.write_backward)
1927 should_warn = false;
1928 }
1929
1930 if (!should_warn)
1931 return;
1932 if (oe->nr_unordered_events != 0)
1933 ui__warning("%u out of order events recorded.\n", oe->nr_unordered_events);
1934 }
1935
1936 static void perf_session__warn_about_errors(const struct perf_session *session)
1937 {
1938 const struct events_stats *stats = &session->evlist->stats;
1939
1940 if (session->tool->lost == perf_event__process_lost &&
1941 stats->nr_events[PERF_RECORD_LOST] != 0) {
1942 ui__warning("Processed %d events and lost %d chunks!\n\n"
1943 "Check IO/CPU overload!\n\n",
1944 stats->nr_events[0],
1945 stats->nr_events[PERF_RECORD_LOST]);
1946 }
1947
1948 if (session->tool->lost_samples == perf_event__process_lost_samples) {
1949 double drop_rate;
1950
1951 drop_rate = (double)stats->total_lost_samples /
1952 (double) (stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples);
1953 if (drop_rate > 0.05) {
1954 ui__warning("Processed %" PRIu64 " samples and lost %3.2f%%!\n\n",
1955 stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples,
1956 drop_rate * 100.0);
1957 }
1958 }
1959
1960 if (session->tool->aux == perf_event__process_aux &&
1961 stats->total_aux_lost != 0) {
1962 ui__warning("AUX data lost %" PRIu64 " times out of %u!\n\n",
1963 stats->total_aux_lost,
1964 stats->nr_events[PERF_RECORD_AUX]);
1965 }
1966
1967 if (session->tool->aux == perf_event__process_aux &&
1968 stats->total_aux_partial != 0) {
1969 bool vmm_exclusive = false;
1970
1971 (void)sysfs__read_bool("module/kvm_intel/parameters/vmm_exclusive",
1972 &vmm_exclusive);
1973
1974 ui__warning("AUX data had gaps in it %" PRIu64 " times out of %u!\n\n"
1975 "Are you running a KVM guest in the background?%s\n\n",
1976 stats->total_aux_partial,
1977 stats->nr_events[PERF_RECORD_AUX],
1978 vmm_exclusive ?
1979 "\nReloading kvm_intel module with vmm_exclusive=0\n"
1980 "will reduce the gaps to only guest's timeslices." :
1981 "");
1982 }
1983
1984 if (session->tool->aux == perf_event__process_aux &&
1985 stats->total_aux_collision != 0) {
1986 ui__warning("AUX data detected collision %" PRIu64 " times out of %u!\n\n",
1987 stats->total_aux_collision,
1988 stats->nr_events[PERF_RECORD_AUX]);
1989 }
1990
1991 if (stats->nr_unknown_events != 0) {
1992 ui__warning("Found %u unknown events!\n\n"
1993 "Is this an older tool processing a perf.data "
1994 "file generated by a more recent tool?\n\n"
1995 "If that is not the case, consider "
1996 "reporting to linux-kernel@vger.kernel.org.\n\n",
1997 stats->nr_unknown_events);
1998 }
1999
2000 if (stats->nr_unknown_id != 0) {
2001 ui__warning("%u samples with id not present in the header\n",
2002 stats->nr_unknown_id);
2003 }
2004
2005 if (stats->nr_invalid_chains != 0) {
2006 ui__warning("Found invalid callchains!\n\n"
2007 "%u out of %u events were discarded for this reason.\n\n"
2008 "Consider reporting to linux-kernel@vger.kernel.org.\n\n",
2009 stats->nr_invalid_chains,
2010 stats->nr_events[PERF_RECORD_SAMPLE]);
2011 }
2012
2013 if (stats->nr_unprocessable_samples != 0) {
2014 ui__warning("%u unprocessable samples recorded.\n"
2015 "Do you have a KVM guest running and not using 'perf kvm'?\n",
2016 stats->nr_unprocessable_samples);
2017 }
2018
2019 perf_session__warn_order(session);
2020
2021 events_stats__auxtrace_error_warn(stats);
2022
2023 if (stats->nr_proc_map_timeout != 0) {
2024 ui__warning("%d map information files for pre-existing threads were\n"
2025 "not processed, if there are samples for addresses they\n"
2026 "will not be resolved, you may find out which are these\n"
2027 "threads by running with -v and redirecting the output\n"
2028 "to a file.\n"
2029 "The time limit to process proc map is too short?\n"
2030 "Increase it by --proc-map-timeout\n",
2031 stats->nr_proc_map_timeout);
2032 }
2033 }
2034
2035 static int perf_session__flush_thread_stack(struct thread *thread,
2036 void *p __maybe_unused)
2037 {
2038 return thread_stack__flush(thread);
2039 }
2040
2041 static int perf_session__flush_thread_stacks(struct perf_session *session)
2042 {
2043 return machines__for_each_thread(&session->machines,
2044 perf_session__flush_thread_stack,
2045 NULL);
2046 }
2047
2048 volatile sig_atomic_t session_done;
2049
2050 static int __perf_session__process_decomp_events(struct perf_session *session);
2051
2052 static int __perf_session__process_pipe_events(struct perf_session *session)
2053 {
2054 struct ordered_events *oe = &session->ordered_events;
2055 struct perf_tool *tool = session->tool;
2056 struct ui_progress prog;
2057 union perf_event *event;
2058 uint32_t size, cur_size = 0;
2059 void *buf = NULL;
2060 s64 skip = 0;
2061 u64 head;
2062 ssize_t err;
2063 void *p;
2064 bool update_prog = false;
2065
2066 perf_tool__fill_defaults(tool);
2067
2068 /*
2069 * If it's from a file saving pipe data (by redirection), it would have
2070 * a file name other than "-". Then we can get the total size and show
2071 * the progress.
2072 */
2073 if (strcmp(session->data->path, "-") && session->data->file.size) {
2074 ui_progress__init_size(&prog, session->data->file.size,
2075 "Processing events...");
2076 update_prog = true;
2077 }
2078
2079 head = 0;
2080 cur_size = sizeof(union perf_event);
2081
2082 buf = malloc(cur_size);
2083 if (!buf)
2084 return -errno;
2085 ordered_events__set_copy_on_queue(oe, true);
2086 more:
2087 event = buf;
2088 err = perf_data__read(session->data, event,
2089 sizeof(struct perf_event_header));
2090 if (err <= 0) {
2091 if (err == 0)
2092 goto done;
2093
2094 pr_err("failed to read event header\n");
2095 goto out_err;
2096 }
2097
2098 if (session->header.needs_swap)
2099 perf_event_header__bswap(&event->header);
2100
2101 size = event->header.size;
2102 if (size < sizeof(struct perf_event_header)) {
2103 pr_err("bad event header size\n");
2104 goto out_err;
2105 }
2106
2107 if (size > cur_size) {
2108 void *new = realloc(buf, size);
2109 if (!new) {
2110 pr_err("failed to allocate memory to read event\n");
2111 goto out_err;
2112 }
2113 buf = new;
2114 cur_size = size;
2115 event = buf;
2116 }
2117 p = event;
2118 p += sizeof(struct perf_event_header);
2119
2120 if (size - sizeof(struct perf_event_header)) {
2121 err = perf_data__read(session->data, p,
2122 size - sizeof(struct perf_event_header));
2123 if (err <= 0) {
2124 if (err == 0) {
2125 pr_err("unexpected end of event stream\n");
2126 goto done;
2127 }
2128
2129 pr_err("failed to read event data\n");
2130 goto out_err;
2131 }
2132 }
2133
2134 if ((skip = perf_session__process_event(session, event, head, "pipe")) < 0) {
2135 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
2136 head, event->header.size, event->header.type);
2137 err = -EINVAL;
2138 goto out_err;
2139 }
2140
2141 head += size;
2142
2143 if (skip > 0)
2144 head += skip;
2145
2146 err = __perf_session__process_decomp_events(session);
2147 if (err)
2148 goto out_err;
2149
2150 if (update_prog)
2151 ui_progress__update(&prog, size);
2152
2153 if (!session_done())
2154 goto more;
2155 done:
2156 /* do the final flush for ordered samples */
2157 err = ordered_events__flush(oe, OE_FLUSH__FINAL);
2158 if (err)
2159 goto out_err;
2160 err = auxtrace__flush_events(session, tool);
2161 if (err)
2162 goto out_err;
2163 err = perf_session__flush_thread_stacks(session);
2164 out_err:
2165 free(buf);
2166 if (update_prog)
2167 ui_progress__finish();
2168 if (!tool->no_warn)
2169 perf_session__warn_about_errors(session);
2170 ordered_events__free(&session->ordered_events);
2171 auxtrace__free_events(session);
2172 return err;
2173 }
2174
2175 static union perf_event *
2176 prefetch_event(char *buf, u64 head, size_t mmap_size,
2177 bool needs_swap, union perf_event *error)
2178 {
2179 union perf_event *event;
2180 u16 event_size;
2181
2182 /*
2183 * Ensure we have enough space remaining to read
2184 * the size of the event in the headers.
2185 */
2186 if (head + sizeof(event->header) > mmap_size)
2187 return NULL;
2188
2189 event = (union perf_event *)(buf + head);
2190 if (needs_swap)
2191 perf_event_header__bswap(&event->header);
2192
2193 event_size = event->header.size;
2194 if (head + event_size <= mmap_size)
2195 return event;
2196
2197 /* We're not fetching the event so swap back again */
2198 if (needs_swap)
2199 perf_event_header__bswap(&event->header);
2200
2201 /* Check if the event fits into the next mmapped buf. */
2202 if (event_size <= mmap_size - head % page_size) {
2203 /* Remap buf and fetch again. */
2204 return NULL;
2205 }
2206
2207 /* Invalid input. Event size should never exceed mmap_size. */
2208 pr_debug("%s: head=%#" PRIx64 " event->header.size=%#x, mmap_size=%#zx:"
2209 " fuzzed or compressed perf.data?\n", __func__, head, event_size, mmap_size);
2210
2211 return error;
2212 }
2213
2214 static union perf_event *
2215 fetch_mmaped_event(u64 head, size_t mmap_size, char *buf, bool needs_swap)
2216 {
2217 return prefetch_event(buf, head, mmap_size, needs_swap, ERR_PTR(-EINVAL));
2218 }
2219
2220 static union perf_event *
2221 fetch_decomp_event(u64 head, size_t mmap_size, char *buf, bool needs_swap)
2222 {
2223 return prefetch_event(buf, head, mmap_size, needs_swap, NULL);
2224 }
2225
2226 static int __perf_session__process_decomp_events(struct perf_session *session)
2227 {
2228 s64 skip;
2229 u64 size;
2230 struct decomp *decomp = session->active_decomp->decomp_last;
2231
2232 if (!decomp)
2233 return 0;
2234
2235 while (decomp->head < decomp->size && !session_done()) {
2236 union perf_event *event = fetch_decomp_event(decomp->head, decomp->size, decomp->data,
2237 session->header.needs_swap);
2238
2239 if (!event)
2240 break;
2241
2242 size = event->header.size;
2243
2244 if (size < sizeof(struct perf_event_header) ||
2245 (skip = perf_session__process_event(session, event, decomp->file_pos,
2246 decomp->file_path)) < 0) {
2247 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
2248 decomp->file_pos + decomp->head, event->header.size, event->header.type);
2249 return -EINVAL;
2250 }
2251
2252 if (skip)
2253 size += skip;
2254
2255 decomp->head += size;
2256 }
2257
2258 return 0;
2259 }
2260
2261 /*
2262 * On 64bit we can mmap the data file in one go. No need for tiny mmap
2263 * slices. On 32bit we use 32MB.
2264 */
2265 #if BITS_PER_LONG == 64
2266 #define MMAP_SIZE ULLONG_MAX
2267 #define NUM_MMAPS 1
2268 #else
2269 #define MMAP_SIZE (32 * 1024 * 1024ULL)
2270 #define NUM_MMAPS 128
2271 #endif
2272
2273 struct reader;
2274
2275 typedef s64 (*reader_cb_t)(struct perf_session *session,
2276 union perf_event *event,
2277 u64 file_offset,
2278 const char *file_path);
2279
2280 struct reader {
2281 int fd;
2282 const char *path;
2283 u64 data_size;
2284 u64 data_offset;
2285 reader_cb_t process;
2286 bool in_place_update;
2287 char *mmaps[NUM_MMAPS];
2288 size_t mmap_size;
2289 int mmap_idx;
2290 char *mmap_cur;
2291 u64 file_pos;
2292 u64 file_offset;
2293 u64 head;
2294 u64 size;
2295 bool done;
2296 struct zstd_data zstd_data;
2297 struct decomp_data decomp_data;
2298 };
2299
2300 static int
2301 reader__init(struct reader *rd, bool *one_mmap)
2302 {
2303 u64 data_size = rd->data_size;
2304 char **mmaps = rd->mmaps;
2305
2306 rd->head = rd->data_offset;
2307 data_size += rd->data_offset;
2308
2309 rd->mmap_size = MMAP_SIZE;
2310 if (rd->mmap_size > data_size) {
2311 rd->mmap_size = data_size;
2312 if (one_mmap)
2313 *one_mmap = true;
2314 }
2315
2316 memset(mmaps, 0, sizeof(rd->mmaps));
2317
2318 if (zstd_init(&rd->zstd_data, 0))
2319 return -1;
2320 rd->decomp_data.zstd_decomp = &rd->zstd_data;
2321
2322 return 0;
2323 }
2324
2325 static void
2326 reader__release_decomp(struct reader *rd)
2327 {
2328 perf_decomp__release_events(rd->decomp_data.decomp);
2329 zstd_fini(&rd->zstd_data);
2330 }
2331
2332 static int
2333 reader__mmap(struct reader *rd, struct perf_session *session)
2334 {
2335 int mmap_prot, mmap_flags;
2336 char *buf, **mmaps = rd->mmaps;
2337 u64 page_offset;
2338
2339 mmap_prot = PROT_READ;
2340 mmap_flags = MAP_SHARED;
2341
2342 if (rd->in_place_update) {
2343 mmap_prot |= PROT_WRITE;
2344 } else if (session->header.needs_swap) {
2345 mmap_prot |= PROT_WRITE;
2346 mmap_flags = MAP_PRIVATE;
2347 }
2348
2349 if (mmaps[rd->mmap_idx]) {
2350 munmap(mmaps[rd->mmap_idx], rd->mmap_size);
2351 mmaps[rd->mmap_idx] = NULL;
2352 }
2353
2354 page_offset = page_size * (rd->head / page_size);
2355 rd->file_offset += page_offset;
2356 rd->head -= page_offset;
2357
2358 buf = mmap(NULL, rd->mmap_size, mmap_prot, mmap_flags, rd->fd,
2359 rd->file_offset);
2360 if (buf == MAP_FAILED) {
2361 pr_err("failed to mmap file\n");
2362 return -errno;
2363 }
2364 mmaps[rd->mmap_idx] = rd->mmap_cur = buf;
2365 rd->mmap_idx = (rd->mmap_idx + 1) & (ARRAY_SIZE(rd->mmaps) - 1);
2366 rd->file_pos = rd->file_offset + rd->head;
2367 if (session->one_mmap) {
2368 session->one_mmap_addr = buf;
2369 session->one_mmap_offset = rd->file_offset;
2370 }
2371
2372 return 0;
2373 }
2374
2375 enum {
2376 READER_OK,
2377 READER_NODATA,
2378 };
2379
2380 static int
2381 reader__read_event(struct reader *rd, struct perf_session *session,
2382 struct ui_progress *prog)
2383 {
2384 u64 size;
2385 int err = READER_OK;
2386 union perf_event *event;
2387 s64 skip;
2388
2389 event = fetch_mmaped_event(rd->head, rd->mmap_size, rd->mmap_cur,
2390 session->header.needs_swap);
2391 if (IS_ERR(event))
2392 return PTR_ERR(event);
2393
2394 if (!event)
2395 return READER_NODATA;
2396
2397 size = event->header.size;
2398
2399 skip = -EINVAL;
2400
2401 if (size < sizeof(struct perf_event_header) ||
2402 (skip = rd->process(session, event, rd->file_pos, rd->path)) < 0) {
2403 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d [%s]\n",
2404 rd->file_offset + rd->head, event->header.size,
2405 event->header.type, strerror(-skip));
2406 err = skip;
2407 goto out;
2408 }
2409
2410 if (skip)
2411 size += skip;
2412
2413 rd->size += size;
2414 rd->head += size;
2415 rd->file_pos += size;
2416
2417 err = __perf_session__process_decomp_events(session);
2418 if (err)
2419 goto out;
2420
2421 ui_progress__update(prog, size);
2422
2423 out:
2424 return err;
2425 }
2426
2427 static inline bool
2428 reader__eof(struct reader *rd)
2429 {
2430 return (rd->file_pos >= rd->data_size + rd->data_offset);
2431 }
2432
2433 static int
2434 reader__process_events(struct reader *rd, struct perf_session *session,
2435 struct ui_progress *prog)
2436 {
2437 int err;
2438
2439 err = reader__init(rd, &session->one_mmap);
2440 if (err)
2441 goto out;
2442
2443 session->active_decomp = &rd->decomp_data;
2444
2445 remap:
2446 err = reader__mmap(rd, session);
2447 if (err)
2448 goto out;
2449
2450 more:
2451 err = reader__read_event(rd, session, prog);
2452 if (err < 0)
2453 goto out;
2454 else if (err == READER_NODATA)
2455 goto remap;
2456
2457 if (session_done())
2458 goto out;
2459
2460 if (!reader__eof(rd))
2461 goto more;
2462
2463 out:
2464 session->active_decomp = &session->decomp_data;
2465 return err;
2466 }
2467
2468 static s64 process_simple(struct perf_session *session,
2469 union perf_event *event,
2470 u64 file_offset,
2471 const char *file_path)
2472 {
2473 return perf_session__process_event(session, event, file_offset, file_path);
2474 }
2475
2476 static int __perf_session__process_events(struct perf_session *session)
2477 {
2478 struct reader rd = {
2479 .fd = perf_data__fd(session->data),
2480 .path = session->data->file.path,
2481 .data_size = session->header.data_size,
2482 .data_offset = session->header.data_offset,
2483 .process = process_simple,
2484 .in_place_update = session->data->in_place_update,
2485 };
2486 struct ordered_events *oe = &session->ordered_events;
2487 struct perf_tool *tool = session->tool;
2488 struct ui_progress prog;
2489 int err;
2490
2491 perf_tool__fill_defaults(tool);
2492
2493 if (rd.data_size == 0)
2494 return -1;
2495
2496 ui_progress__init_size(&prog, rd.data_size, "Processing events...");
2497
2498 err = reader__process_events(&rd, session, &prog);
2499 if (err)
2500 goto out_err;
2501 /* do the final flush for ordered samples */
2502 err = ordered_events__flush(oe, OE_FLUSH__FINAL);
2503 if (err)
2504 goto out_err;
2505 err = auxtrace__flush_events(session, tool);
2506 if (err)
2507 goto out_err;
2508 err = perf_session__flush_thread_stacks(session);
2509 out_err:
2510 ui_progress__finish();
2511 if (!tool->no_warn)
2512 perf_session__warn_about_errors(session);
2513 /*
2514 * We may switching perf.data output, make ordered_events
2515 * reusable.
2516 */
2517 ordered_events__reinit(&session->ordered_events);
2518 auxtrace__free_events(session);
2519 reader__release_decomp(&rd);
2520 session->one_mmap = false;
2521 return err;
2522 }
2523
2524 /*
2525 * Processing 2 MB of data from each reader in sequence,
2526 * because that's the way the ordered events sorting works
2527 * most efficiently.
2528 */
2529 #define READER_MAX_SIZE (2 * 1024 * 1024)
2530
2531 /*
2532 * This function reads, merge and process directory data.
2533 * It assumens the version 1 of directory data, where each
2534 * data file holds per-cpu data, already sorted by kernel.
2535 */
2536 static int __perf_session__process_dir_events(struct perf_session *session)
2537 {
2538 struct perf_data *data = session->data;
2539 struct perf_tool *tool = session->tool;
2540 int i, ret, readers, nr_readers;
2541 struct ui_progress prog;
2542 u64 total_size = perf_data__size(session->data);
2543 struct reader *rd;
2544
2545 perf_tool__fill_defaults(tool);
2546
2547 ui_progress__init_size(&prog, total_size, "Processing events...");
2548
2549 nr_readers = 1;
2550 for (i = 0; i < data->dir.nr; i++) {
2551 if (data->dir.files[i].size)
2552 nr_readers++;
2553 }
2554
2555 rd = zalloc(nr_readers * sizeof(struct reader));
2556 if (!rd)
2557 return -ENOMEM;
2558
2559 rd[0] = (struct reader) {
2560 .fd = perf_data__fd(session->data),
2561 .path = session->data->file.path,
2562 .data_size = session->header.data_size,
2563 .data_offset = session->header.data_offset,
2564 .process = process_simple,
2565 .in_place_update = session->data->in_place_update,
2566 };
2567 ret = reader__init(&rd[0], NULL);
2568 if (ret)
2569 goto out_err;
2570 ret = reader__mmap(&rd[0], session);
2571 if (ret)
2572 goto out_err;
2573 readers = 1;
2574
2575 for (i = 0; i < data->dir.nr; i++) {
2576 if (!data->dir.files[i].size)
2577 continue;
2578 rd[readers] = (struct reader) {
2579 .fd = data->dir.files[i].fd,
2580 .path = data->dir.files[i].path,
2581 .data_size = data->dir.files[i].size,
2582 .data_offset = 0,
2583 .process = process_simple,
2584 .in_place_update = session->data->in_place_update,
2585 };
2586 ret = reader__init(&rd[readers], NULL);
2587 if (ret)
2588 goto out_err;
2589 ret = reader__mmap(&rd[readers], session);
2590 if (ret)
2591 goto out_err;
2592 readers++;
2593 }
2594
2595 i = 0;
2596 while (readers) {
2597 if (session_done())
2598 break;
2599
2600 if (rd[i].done) {
2601 i = (i + 1) % nr_readers;
2602 continue;
2603 }
2604 if (reader__eof(&rd[i])) {
2605 rd[i].done = true;
2606 readers--;
2607 continue;
2608 }
2609
2610 session->active_decomp = &rd[i].decomp_data;
2611 ret = reader__read_event(&rd[i], session, &prog);
2612 if (ret < 0) {
2613 goto out_err;
2614 } else if (ret == READER_NODATA) {
2615 ret = reader__mmap(&rd[i], session);
2616 if (ret)
2617 goto out_err;
2618 }
2619
2620 if (rd[i].size >= READER_MAX_SIZE) {
2621 rd[i].size = 0;
2622 i = (i + 1) % nr_readers;
2623 }
2624 }
2625
2626 ret = ordered_events__flush(&session->ordered_events, OE_FLUSH__FINAL);
2627 if (ret)
2628 goto out_err;
2629
2630 ret = perf_session__flush_thread_stacks(session);
2631 out_err:
2632 ui_progress__finish();
2633
2634 if (!tool->no_warn)
2635 perf_session__warn_about_errors(session);
2636
2637 /*
2638 * We may switching perf.data output, make ordered_events
2639 * reusable.
2640 */
2641 ordered_events__reinit(&session->ordered_events);
2642
2643 session->one_mmap = false;
2644
2645 session->active_decomp = &session->decomp_data;
2646 for (i = 0; i < nr_readers; i++)
2647 reader__release_decomp(&rd[i]);
2648 zfree(&rd);
2649
2650 return ret;
2651 }
2652
2653 int perf_session__process_events(struct perf_session *session)
2654 {
2655 if (perf_session__register_idle_thread(session) < 0)
2656 return -ENOMEM;
2657
2658 if (perf_data__is_pipe(session->data))
2659 return __perf_session__process_pipe_events(session);
2660
2661 if (perf_data__is_dir(session->data) && session->data->dir.nr)
2662 return __perf_session__process_dir_events(session);
2663
2664 return __perf_session__process_events(session);
2665 }
2666
2667 bool perf_session__has_traces(struct perf_session *session, const char *msg)
2668 {
2669 struct evsel *evsel;
2670
2671 evlist__for_each_entry(session->evlist, evsel) {
2672 if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT)
2673 return true;
2674 }
2675
2676 pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg);
2677 return false;
2678 }
2679
2680 int map__set_kallsyms_ref_reloc_sym(struct map *map, const char *symbol_name, u64 addr)
2681 {
2682 char *bracket;
2683 struct ref_reloc_sym *ref;
2684 struct kmap *kmap;
2685
2686 ref = zalloc(sizeof(struct ref_reloc_sym));
2687 if (ref == NULL)
2688 return -ENOMEM;
2689
2690 ref->name = strdup(symbol_name);
2691 if (ref->name == NULL) {
2692 free(ref);
2693 return -ENOMEM;
2694 }
2695
2696 bracket = strchr(ref->name, ']');
2697 if (bracket)
2698 *bracket = '\0';
2699
2700 ref->addr = addr;
2701
2702 kmap = map__kmap(map);
2703 if (kmap)
2704 kmap->ref_reloc_sym = ref;
2705
2706 return 0;
2707 }
2708
2709 size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp)
2710 {
2711 return machines__fprintf_dsos(&session->machines, fp);
2712 }
2713
2714 size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp,
2715 bool (skip)(struct dso *dso, int parm), int parm)
2716 {
2717 return machines__fprintf_dsos_buildid(&session->machines, fp, skip, parm);
2718 }
2719
2720 size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp)
2721 {
2722 size_t ret;
2723 const char *msg = "";
2724
2725 if (perf_header__has_feat(&session->header, HEADER_AUXTRACE))
2726 msg = " (excludes AUX area (e.g. instruction trace) decoded / synthesized events)";
2727
2728 ret = fprintf(fp, "\nAggregated stats:%s\n", msg);
2729
2730 ret += events_stats__fprintf(&session->evlist->stats, fp);
2731 return ret;
2732 }
2733
2734 size_t perf_session__fprintf(struct perf_session *session, FILE *fp)
2735 {
2736 /*
2737 * FIXME: Here we have to actually print all the machines in this
2738 * session, not just the host...
2739 */
2740 return machine__fprintf(&session->machines.host, fp);
2741 }
2742
2743 void perf_session__dump_kmaps(struct perf_session *session)
2744 {
2745 int save_verbose = verbose;
2746
2747 fflush(stdout);
2748 fprintf(stderr, "Kernel and module maps:\n");
2749 verbose = 0; /* Suppress verbose to print a summary only */
2750 maps__fprintf(machine__kernel_maps(&session->machines.host), stderr);
2751 verbose = save_verbose;
2752 }
2753
2754 struct evsel *perf_session__find_first_evtype(struct perf_session *session,
2755 unsigned int type)
2756 {
2757 struct evsel *pos;
2758
2759 evlist__for_each_entry(session->evlist, pos) {
2760 if (pos->core.attr.type == type)
2761 return pos;
2762 }
2763 return NULL;
2764 }
2765
2766 int perf_session__cpu_bitmap(struct perf_session *session,
2767 const char *cpu_list, unsigned long *cpu_bitmap)
2768 {
2769 int i, err = -1;
2770 struct perf_cpu_map *map;
2771 int nr_cpus = min(session->header.env.nr_cpus_avail, MAX_NR_CPUS);
2772 struct perf_cpu cpu;
2773
2774 for (i = 0; i < PERF_TYPE_MAX; ++i) {
2775 struct evsel *evsel;
2776
2777 evsel = perf_session__find_first_evtype(session, i);
2778 if (!evsel)
2779 continue;
2780
2781 if (!(evsel->core.attr.sample_type & PERF_SAMPLE_CPU)) {
2782 pr_err("File does not contain CPU events. "
2783 "Remove -C option to proceed.\n");
2784 return -1;
2785 }
2786 }
2787
2788 map = perf_cpu_map__new(cpu_list);
2789 if (map == NULL) {
2790 pr_err("Invalid cpu_list\n");
2791 return -1;
2792 }
2793
2794 perf_cpu_map__for_each_cpu(cpu, i, map) {
2795 if (cpu.cpu >= nr_cpus) {
2796 pr_err("Requested CPU %d too large. "
2797 "Consider raising MAX_NR_CPUS\n", cpu.cpu);
2798 goto out_delete_map;
2799 }
2800
2801 __set_bit(cpu.cpu, cpu_bitmap);
2802 }
2803
2804 err = 0;
2805
2806 out_delete_map:
2807 perf_cpu_map__put(map);
2808 return err;
2809 }
2810
2811 void perf_session__fprintf_info(struct perf_session *session, FILE *fp,
2812 bool full)
2813 {
2814 if (session == NULL || fp == NULL)
2815 return;
2816
2817 fprintf(fp, "# ========\n");
2818 perf_header__fprintf_info(session, fp, full);
2819 fprintf(fp, "# ========\n#\n");
2820 }
2821
2822 static int perf_session__register_guest(struct perf_session *session, pid_t machine_pid)
2823 {
2824 struct machine *machine = machines__findnew(&session->machines, machine_pid);
2825 struct thread *thread;
2826
2827 if (!machine)
2828 return -ENOMEM;
2829
2830 machine->single_address_space = session->machines.host.single_address_space;
2831
2832 thread = machine__idle_thread(machine);
2833 if (!thread)
2834 return -ENOMEM;
2835 thread__put(thread);
2836
2837 machine->kallsyms_filename = perf_data__guest_kallsyms_name(session->data, machine_pid);
2838
2839 return 0;
2840 }
2841
2842 static int perf_session__set_guest_cpu(struct perf_session *session, pid_t pid,
2843 pid_t tid, int guest_cpu)
2844 {
2845 struct machine *machine = &session->machines.host;
2846 struct thread *thread = machine__findnew_thread(machine, pid, tid);
2847
2848 if (!thread)
2849 return -ENOMEM;
2850 thread__set_guest_cpu(thread, guest_cpu);
2851 thread__put(thread);
2852
2853 return 0;
2854 }
2855
2856 int perf_event__process_id_index(struct perf_session *session,
2857 union perf_event *event)
2858 {
2859 struct evlist *evlist = session->evlist;
2860 struct perf_record_id_index *ie = &event->id_index;
2861 size_t sz = ie->header.size - sizeof(*ie);
2862 size_t i, nr, max_nr;
2863 size_t e1_sz = sizeof(struct id_index_entry);
2864 size_t e2_sz = sizeof(struct id_index_entry_2);
2865 size_t etot_sz = e1_sz + e2_sz;
2866 struct id_index_entry_2 *e2;
2867 pid_t last_pid = 0;
2868
2869 max_nr = sz / e1_sz;
2870 nr = ie->nr;
2871 if (nr > max_nr) {
2872 printf("Too big: nr %zu max_nr %zu\n", nr, max_nr);
2873 return -EINVAL;
2874 }
2875
2876 if (sz >= nr * etot_sz) {
2877 max_nr = sz / etot_sz;
2878 if (nr > max_nr) {
2879 printf("Too big2: nr %zu max_nr %zu\n", nr, max_nr);
2880 return -EINVAL;
2881 }
2882 e2 = (void *)ie + sizeof(*ie) + nr * e1_sz;
2883 } else {
2884 e2 = NULL;
2885 }
2886
2887 if (dump_trace)
2888 fprintf(stdout, " nr: %zu\n", nr);
2889
2890 for (i = 0; i < nr; i++, (e2 ? e2++ : 0)) {
2891 struct id_index_entry *e = &ie->entries[i];
2892 struct perf_sample_id *sid;
2893 int ret;
2894
2895 if (dump_trace) {
2896 fprintf(stdout, " ... id: %"PRI_lu64, e->id);
2897 fprintf(stdout, " idx: %"PRI_lu64, e->idx);
2898 fprintf(stdout, " cpu: %"PRI_ld64, e->cpu);
2899 fprintf(stdout, " tid: %"PRI_ld64, e->tid);
2900 if (e2) {
2901 fprintf(stdout, " machine_pid: %"PRI_ld64, e2->machine_pid);
2902 fprintf(stdout, " vcpu: %"PRI_lu64"\n", e2->vcpu);
2903 } else {
2904 fprintf(stdout, "\n");
2905 }
2906 }
2907
2908 sid = evlist__id2sid(evlist, e->id);
2909 if (!sid)
2910 return -ENOENT;
2911
2912 sid->idx = e->idx;
2913 sid->cpu.cpu = e->cpu;
2914 sid->tid = e->tid;
2915
2916 if (!e2)
2917 continue;
2918
2919 sid->machine_pid = e2->machine_pid;
2920 sid->vcpu.cpu = e2->vcpu;
2921
2922 if (!sid->machine_pid)
2923 continue;
2924
2925 if (sid->machine_pid != last_pid) {
2926 ret = perf_session__register_guest(session, sid->machine_pid);
2927 if (ret)
2928 return ret;
2929 last_pid = sid->machine_pid;
2930 perf_guest = true;
2931 }
2932
2933 ret = perf_session__set_guest_cpu(session, sid->machine_pid, e->tid, e2->vcpu);
2934 if (ret)
2935 return ret;
2936 }
2937 return 0;
2938 }
2939
2940 int perf_session__dsos_hit_all(struct perf_session *session)
2941 {
2942 struct rb_node *nd;
2943 int err;
2944
2945 err = machine__hit_all_dsos(&session->machines.host);
2946 if (err)
2947 return err;
2948
2949 for (nd = rb_first_cached(&session->machines.guests); nd;
2950 nd = rb_next(nd)) {
2951 struct machine *pos = rb_entry(nd, struct machine, rb_node);
2952
2953 err = machine__hit_all_dsos(pos);
2954 if (err)
2955 return err;
2956 }
2957
2958 return 0;
2959 }
2960
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