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perf stat record: Add record command
[deliverable/linux.git] / tools / perf / util / session.c
CommitLineData
94c744b6 1#include <linux/kernel.h>
4e319027 2#include <traceevent/event-parse.h>
94c744b6 3
ba21594c 4#include <byteswap.h>
94c744b6
ACM		 5#include <unistd.h>
6#include <sys/types.h>
a41794cd 7#include <sys/mman.h>
94c744b6 8
e248de33
ACM		 9#include "evlist.h"
10#include "evsel.h"
94c744b6 11#include "session.h"
45694aa7 12#include "tool.h"
a328626b 13#include "sort.h"
94c744b6 14#include "util.h"
5d67be97 15#include "cpumap.h"
0f6a3015 16#include "perf_regs.h"
b0a45203 17#include "asm/bug.h"
c446870d 18#include "auxtrace.h"
a5499b37 19#include "thread-stack.h"
2d2aea6a 20#include "stat.h"
94c744b6 21
c446870d
AH		 22static int perf_session__deliver_event(struct perf_session *session,
23 union perf_event *event,
24 struct perf_sample *sample,
25 struct perf_tool *tool,
26 u64 file_offset);
d10eb1eb 27
316c7136 28static int perf_session__open(struct perf_session *session)
94c744b6 29{
316c7136 30 struct perf_data_file *file = session->file;
8dc58101 31
316c7136 32 if (perf_session__read_header(session) < 0) {
e87b4911 33 pr_err("incompatible file format (rerun with -v to learn more)\n");
6a4d98d7 34 return -1;
94c744b6
ACM		 35 }
36
cc9784bd
JO		 37 if (perf_data_file__is_pipe(file))
38 return 0;
39
316c7136 40 if (!perf_evlist__valid_sample_type(session->evlist)) {
e87b4911 41 pr_err("non matching sample_type\n");
6a4d98d7 42 return -1;
c2a70653
ACM		 43 }
44
316c7136 45 if (!perf_evlist__valid_sample_id_all(session->evlist)) {
e87b4911 46 pr_err("non matching sample_id_all\n");
6a4d98d7 47 return -1;
c2a70653
ACM		 48 }
49
316c7136 50 if (!perf_evlist__valid_read_format(session->evlist)) {
e87b4911 51 pr_err("non matching read_format\n");
6a4d98d7 52 return -1;
9ede473c
JO		 53 }
54
94c744b6 55 return 0;
94c744b6
ACM		 56}
57
7b56cce2 58void perf_session__set_id_hdr_size(struct perf_session *session)
9c90a61c 59{
7b56cce2
ACM		 60 u16 id_hdr_size = perf_evlist__id_hdr_size(session->evlist);
61
7b56cce2 62 machines__set_id_hdr_size(&session->machines, id_hdr_size);
9c90a61c
ACM		 63}
64
316c7136 65int perf_session__create_kernel_maps(struct perf_session *session)
a1645ce1 66{
316c7136 67 int ret = machine__create_kernel_maps(&session->machines.host);
a1645ce1 68
a1645ce1 69 if (ret >= 0)
316c7136 70 ret = machines__create_guest_kernel_maps(&session->machines);
a1645ce1
ZY		 71 return ret;
72}
73
316c7136 74static void perf_session__destroy_kernel_maps(struct perf_session *session)
076c6e45 75{
316c7136 76 machines__destroy_kernel_maps(&session->machines);
076c6e45
ACM		 77}
78
cfe1c414
AH		 79static bool perf_session__has_comm_exec(struct perf_session *session)
80{
81 struct perf_evsel *evsel;
82
83 evlist__for_each(session->evlist, evsel) {
84 if (evsel->attr.comm_exec)
85 return true;
86 }
87
88 return false;
89}
90
91static void perf_session__set_comm_exec(struct perf_session *session)
92{
93 bool comm_exec = perf_session__has_comm_exec(session);
94
95 machines__set_comm_exec(&session->machines, comm_exec);
96}
97
d10eb1eb 98static int ordered_events__deliver_event(struct ordered_events *oe,
9870d780 99 struct ordered_event *event)
d10eb1eb 100{
9870d780
ACM		 101 struct perf_sample sample;
102 struct perf_session *session = container_of(oe, struct perf_session,
103 ordered_events);
104 int ret = perf_evlist__parse_sample(session->evlist, event->event, &sample);
105
106 if (ret) {
107 pr_err("Can't parse sample, err = %d\n", ret);
108 return ret;
109 }
110
c446870d
AH		 111 return perf_session__deliver_event(session, event->event, &sample,
112 session->tool, event->file_offset);
d10eb1eb
ACM		 113}
114
f5fc1412
JO		 115struct perf_session *perf_session__new(struct perf_data_file *file,
116 bool repipe, struct perf_tool *tool)
94c744b6 117{
316c7136 118 struct perf_session *session = zalloc(sizeof(*session));
efad1415 119
316c7136 120 if (!session)
94c744b6
ACM		 121 goto out;
122
316c7136 123 session->repipe = repipe;
9870d780 124 session->tool = tool;
99fa2984 125 INIT_LIST_HEAD(&session->auxtrace_index);
316c7136 126 machines__init(&session->machines);
9870d780 127 ordered_events__init(&session->ordered_events, ordered_events__deliver_event);
94c744b6 128
6a4d98d7
JO		 129 if (file) {
130 if (perf_data_file__open(file))
64abebf7 131 goto out_delete;
6a4d98d7 132
316c7136 133 session->file = file;
6a4d98d7
JO		 134
135 if (perf_data_file__is_read(file)) {
316c7136 136 if (perf_session__open(session) < 0)
6a4d98d7
JO		 137 goto out_close;
138
316c7136 139 perf_session__set_id_hdr_size(session);
cfe1c414 140 perf_session__set_comm_exec(session);
6a4d98d7 141 }
4cde998d
ACM		 142 } else {
143 session->machines.host.env = &perf_env;
6a4d98d7
JO		 144 }
145
146 if (!file || perf_data_file__is_write(file)) {
64abebf7
ACM		 147 /*
148 * In O_RDONLY mode this will be performed when reading the
8115d60c 149 * kernel MMAP event, in perf_event__process_mmap().
64abebf7 150 */
316c7136 151 if (perf_session__create_kernel_maps(session) < 0)
a5c2a4c9 152 pr_warning("Cannot read kernel map\n");
64abebf7 153 }
d549c769 154
45694aa7 155 if (tool && tool->ordering_requires_timestamps &&
0a8cb85c 156 tool->ordered_events && !perf_evlist__sample_id_all(session->evlist)) {
21ef97f0 157 dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n");
0a8cb85c 158 tool->ordered_events = false;
d10eb1eb 159 }
21ef97f0 160
316c7136 161 return session;
6a4d98d7
JO		 162
163 out_close:
164 perf_data_file__close(file);
165 out_delete:
316c7136 166 perf_session__delete(session);
6a4d98d7 167 out:
4aa65636 168 return NULL;
94c744b6
ACM		 169}
170
b424eba2
ACM		 171static void perf_session__delete_threads(struct perf_session *session)
172{
876650e6 173 machine__delete_threads(&session->machines.host);
b424eba2
ACM		 174}
175
316c7136 176void perf_session__delete(struct perf_session *session)
94c744b6 177{
c446870d 178 auxtrace__free(session);
99fa2984 179 auxtrace_index__free(&session->auxtrace_index);
316c7136 180 perf_session__destroy_kernel_maps(session);
316c7136 181 perf_session__delete_threads(session);
f0ce888c 182 perf_env__exit(&session->header.env);
316c7136
ACM		 183 machines__exit(&session->machines);
184 if (session->file)
185 perf_data_file__close(session->file);
186 free(session);
94c744b6 187}
a328626b 188
47c3d109
AH		 189static int process_event_synth_tracing_data_stub(struct perf_tool *tool
190 __maybe_unused,
191 union perf_event *event
1d037ca1
IT		 192 __maybe_unused,
193 struct perf_session *session
194 __maybe_unused)
d20deb64
ACM		 195{
196 dump_printf(": unhandled!\n");
197 return 0;
198}
199
47c3d109
AH		 200static int process_event_synth_attr_stub(struct perf_tool *tool __maybe_unused,
201 union perf_event *event __maybe_unused,
1d037ca1
IT		 202 struct perf_evlist **pevlist
203 __maybe_unused)
10d0f086
ACM		 204{
205 dump_printf(": unhandled!\n");
206 return 0;
207}
208
ffe77725
JO		 209static int process_event_synth_event_update_stub(struct perf_tool *tool __maybe_unused,
210 union perf_event *event __maybe_unused,
211 struct perf_evlist **pevlist
212 __maybe_unused)
213{
2d2aea6a
JO		 214 if (dump_trace)
215 perf_event__fprintf_event_update(event, stdout);
216
ffe77725
JO		 217 dump_printf(": unhandled!\n");
218 return 0;
219}
220
1d037ca1
IT		 221static int process_event_sample_stub(struct perf_tool *tool __maybe_unused,
222 union perf_event *event __maybe_unused,
223 struct perf_sample *sample __maybe_unused,
224 struct perf_evsel *evsel __maybe_unused,
225 struct machine *machine __maybe_unused)
9e69c210
ACM		 226{
227 dump_printf(": unhandled!\n");
228 return 0;
229}
230
1d037ca1
IT		 231static int process_event_stub(struct perf_tool *tool __maybe_unused,
232 union perf_event *event __maybe_unused,
233 struct perf_sample *sample __maybe_unused,
234 struct machine *machine __maybe_unused)
06aae590
ACM		 235{
236 dump_printf(": unhandled!\n");
237 return 0;
238}
239
d704ebda
ACM		 240static int process_build_id_stub(struct perf_tool *tool __maybe_unused,
241 union perf_event *event __maybe_unused,
242 struct perf_session *session __maybe_unused)
243{
244 dump_printf(": unhandled!\n");
245 return 0;
246}
247
1d037ca1
IT		 248static int process_finished_round_stub(struct perf_tool *tool __maybe_unused,
249 union perf_event *event __maybe_unused,
d704ebda 250 struct ordered_events *oe __maybe_unused)
743eb868
ACM		 251{
252 dump_printf(": unhandled!\n");
253 return 0;
254}
255
45694aa7 256static int process_finished_round(struct perf_tool *tool,
d20deb64 257 union perf_event *event,
d704ebda 258 struct ordered_events *oe);
d6b17beb 259
3c659eed
AH		 260static int process_id_index_stub(struct perf_tool *tool __maybe_unused,
261 union perf_event *event __maybe_unused,
262 struct perf_session *perf_session
263 __maybe_unused)
264{
265 dump_printf(": unhandled!\n");
266 return 0;
267}
268
a16ac023
AH		 269static int process_event_auxtrace_info_stub(struct perf_tool *tool __maybe_unused,
270 union perf_event *event __maybe_unused,
271 struct perf_session *session __maybe_unused)
272{
273 dump_printf(": unhandled!\n");
274 return 0;
275}
276
277static int skipn(int fd, off_t n)
278{
279 char buf[4096];
280 ssize_t ret;
281
282 while (n > 0) {
283 ret = read(fd, buf, min(n, (off_t)sizeof(buf)));
284 if (ret <= 0)
285 return ret;
286 n -= ret;
287 }
288
289 return 0;
290}
291
292static s64 process_event_auxtrace_stub(struct perf_tool *tool __maybe_unused,
293 union perf_event *event,
294 struct perf_session *session
295 __maybe_unused)
296{
297 dump_printf(": unhandled!\n");
298 if (perf_data_file__is_pipe(session->file))
299 skipn(perf_data_file__fd(session->file), event->auxtrace.size);
300 return event->auxtrace.size;
301}
302
e9bf54d2
AH		 303static
304int process_event_auxtrace_error_stub(struct perf_tool *tool __maybe_unused,
305 union perf_event *event __maybe_unused,
306 struct perf_session *session __maybe_unused)
307{
308 dump_printf(": unhandled!\n");
309 return 0;
310}
311
5f3339d2
JO		 312
313static
314int process_event_thread_map_stub(struct perf_tool *tool __maybe_unused,
315 union perf_event *event __maybe_unused,
316 struct perf_session *session __maybe_unused)
317{
2d2aea6a
JO		 318 if (dump_trace)
319 perf_event__fprintf_thread_map(event, stdout);
320
5f3339d2
JO		 321 dump_printf(": unhandled!\n");
322 return 0;
323}
324
6640b6c2
JO		 325static
326int process_event_cpu_map_stub(struct perf_tool *tool __maybe_unused,
327 union perf_event *event __maybe_unused,
328 struct perf_session *session __maybe_unused)
329{
2d2aea6a
JO		 330 if (dump_trace)
331 perf_event__fprintf_cpu_map(event, stdout);
332
6640b6c2
JO		 333 dump_printf(": unhandled!\n");
334 return 0;
335}
336
374fb9e3
JO		 337static
338int process_event_stat_config_stub(struct perf_tool *tool __maybe_unused,
339 union perf_event *event __maybe_unused,
340 struct perf_session *session __maybe_unused)
341{
2d2aea6a
JO		 342 if (dump_trace)
343 perf_event__fprintf_stat_config(event, stdout);
344
374fb9e3
JO		 345 dump_printf(": unhandled!\n");
346 return 0;
347}
348
d80518c9
JO		 349static int process_stat_stub(struct perf_tool *tool __maybe_unused,
350 union perf_event *event __maybe_unused,
351 struct perf_session *perf_session
352 __maybe_unused)
353{
2d2aea6a
JO		 354 if (dump_trace)
355 perf_event__fprintf_stat(event, stdout);
356
d80518c9
JO		 357 dump_printf(": unhandled!\n");
358 return 0;
359}
360
2d8f0f18
JO		 361static int process_stat_round_stub(struct perf_tool *tool __maybe_unused,
362 union perf_event *event __maybe_unused,
363 struct perf_session *perf_session
364 __maybe_unused)
365{
2d2aea6a
JO		 366 if (dump_trace)
367 perf_event__fprintf_stat_round(event, stdout);
368
2d8f0f18
JO		 369 dump_printf(": unhandled!\n");
370 return 0;
371}
372
9c501402 373void perf_tool__fill_defaults(struct perf_tool *tool)
06aae590 374{
45694aa7
ACM		 375 if (tool->sample == NULL)
376 tool->sample = process_event_sample_stub;
377 if (tool->mmap == NULL)
378 tool->mmap = process_event_stub;
6adb0b0a
DA		 379 if (tool->mmap2 == NULL)
380 tool->mmap2 = process_event_stub;
45694aa7
ACM		 381 if (tool->comm == NULL)
382 tool->comm = process_event_stub;
383 if (tool->fork == NULL)
384 tool->fork = process_event_stub;
385 if (tool->exit == NULL)
386 tool->exit = process_event_stub;
387 if (tool->lost == NULL)
388 tool->lost = perf_event__process_lost;
c4937a91
KL		 389 if (tool->lost_samples == NULL)
390 tool->lost_samples = perf_event__process_lost_samples;
4a96f7a0
AH		 391 if (tool->aux == NULL)
392 tool->aux = perf_event__process_aux;
0ad21f68
AH		 393 if (tool->itrace_start == NULL)
394 tool->itrace_start = perf_event__process_itrace_start;
0286039f
AH		 395 if (tool->context_switch == NULL)
396 tool->context_switch = perf_event__process_switch;
45694aa7
ACM		 397 if (tool->read == NULL)
398 tool->read = process_event_sample_stub;
399 if (tool->throttle == NULL)
400 tool->throttle = process_event_stub;
401 if (tool->unthrottle == NULL)
402 tool->unthrottle = process_event_stub;
403 if (tool->attr == NULL)
404 tool->attr = process_event_synth_attr_stub;
ffe77725
JO		 405 if (tool->event_update == NULL)
406 tool->event_update = process_event_synth_event_update_stub;
45694aa7
ACM		 407 if (tool->tracing_data == NULL)
408 tool->tracing_data = process_event_synth_tracing_data_stub;
409 if (tool->build_id == NULL)
d704ebda 410 tool->build_id = process_build_id_stub;
45694aa7 411 if (tool->finished_round == NULL) {
0a8cb85c 412 if (tool->ordered_events)
45694aa7 413 tool->finished_round = process_finished_round;
d6b17beb 414 else
45694aa7 415 tool->finished_round = process_finished_round_stub;
d6b17beb 416 }
3c659eed
AH		 417 if (tool->id_index == NULL)
418 tool->id_index = process_id_index_stub;
a16ac023
AH		 419 if (tool->auxtrace_info == NULL)
420 tool->auxtrace_info = process_event_auxtrace_info_stub;
421 if (tool->auxtrace == NULL)
422 tool->auxtrace = process_event_auxtrace_stub;
e9bf54d2
AH		 423 if (tool->auxtrace_error == NULL)
424 tool->auxtrace_error = process_event_auxtrace_error_stub;
5f3339d2
JO		 425 if (tool->thread_map == NULL)
426 tool->thread_map = process_event_thread_map_stub;
6640b6c2
JO		 427 if (tool->cpu_map == NULL)
428 tool->cpu_map = process_event_cpu_map_stub;
374fb9e3
JO		 429 if (tool->stat_config == NULL)
430 tool->stat_config = process_event_stat_config_stub;
d80518c9
JO		 431 if (tool->stat == NULL)
432 tool->stat = process_stat_stub;
2d8f0f18
JO		 433 if (tool->stat_round == NULL)
434 tool->stat_round = process_stat_round_stub;
06aae590 435}
48000a1a 436
268fb20f
JO		 437static void swap_sample_id_all(union perf_event *event, void *data)
438{
439 void *end = (void *) event + event->header.size;
440 int size = end - data;
441
442 BUG_ON(size % sizeof(u64));
443 mem_bswap_64(data, size);
444}
445
446static void perf_event__all64_swap(union perf_event *event,
1d037ca1 447 bool sample_id_all __maybe_unused)
ba21594c 448{
8115d60c
ACM		 449 struct perf_event_header *hdr = &event->header;
450 mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr));
ba21594c
ACM		 451}
452
268fb20f 453static void perf_event__comm_swap(union perf_event *event, bool sample_id_all)
ba21594c 454{
8115d60c
ACM		 455 event->comm.pid = bswap_32(event->comm.pid);
456 event->comm.tid = bswap_32(event->comm.tid);
268fb20f
JO		 457
458 if (sample_id_all) {
459 void *data = &event->comm.comm;
460
9ac3e487 461 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
268fb20f
JO		 462 swap_sample_id_all(event, data);
463 }
ba21594c
ACM		 464}
465
268fb20f
JO		 466static void perf_event__mmap_swap(union perf_event *event,
467 bool sample_id_all)
ba21594c 468{
8115d60c
ACM		 469 event->mmap.pid = bswap_32(event->mmap.pid);
470 event->mmap.tid = bswap_32(event->mmap.tid);
471 event->mmap.start = bswap_64(event->mmap.start);
472 event->mmap.len = bswap_64(event->mmap.len);
473 event->mmap.pgoff = bswap_64(event->mmap.pgoff);
268fb20f
JO		 474
475 if (sample_id_all) {
476 void *data = &event->mmap.filename;
477
9ac3e487 478 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
268fb20f
JO		 479 swap_sample_id_all(event, data);
480 }
ba21594c
ACM		 481}
482
5c5e854b
SE		 483static void perf_event__mmap2_swap(union perf_event *event,
484 bool sample_id_all)
485{
486 event->mmap2.pid = bswap_32(event->mmap2.pid);
487 event->mmap2.tid = bswap_32(event->mmap2.tid);
488 event->mmap2.start = bswap_64(event->mmap2.start);
489 event->mmap2.len = bswap_64(event->mmap2.len);
490 event->mmap2.pgoff = bswap_64(event->mmap2.pgoff);
491 event->mmap2.maj = bswap_32(event->mmap2.maj);
492 event->mmap2.min = bswap_32(event->mmap2.min);
493 event->mmap2.ino = bswap_64(event->mmap2.ino);
494
495 if (sample_id_all) {
496 void *data = &event->mmap2.filename;
497
498 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
499 swap_sample_id_all(event, data);
500 }
501}
268fb20f 502static void perf_event__task_swap(union perf_event *event, bool sample_id_all)
ba21594c 503{
8115d60c
ACM		 504 event->fork.pid = bswap_32(event->fork.pid);
505 event->fork.tid = bswap_32(event->fork.tid);
506 event->fork.ppid = bswap_32(event->fork.ppid);
507 event->fork.ptid = bswap_32(event->fork.ptid);
508 event->fork.time = bswap_64(event->fork.time);
268fb20f
JO		 509
510 if (sample_id_all)
511 swap_sample_id_all(event, &event->fork + 1);
ba21594c
ACM		 512}
513
268fb20f 514static void perf_event__read_swap(union perf_event *event, bool sample_id_all)
ba21594c 515{
8115d60c
ACM		 516 event->read.pid = bswap_32(event->read.pid);
517 event->read.tid = bswap_32(event->read.tid);
518 event->read.value = bswap_64(event->read.value);
519 event->read.time_enabled = bswap_64(event->read.time_enabled);
520 event->read.time_running = bswap_64(event->read.time_running);
521 event->read.id = bswap_64(event->read.id);
268fb20f
JO		 522
523 if (sample_id_all)
524 swap_sample_id_all(event, &event->read + 1);
ba21594c
ACM		 525}
526
4a96f7a0
AH		 527static void perf_event__aux_swap(union perf_event *event, bool sample_id_all)
528{
529 event->aux.aux_offset = bswap_64(event->aux.aux_offset);
530 event->aux.aux_size = bswap_64(event->aux.aux_size);
531 event->aux.flags = bswap_64(event->aux.flags);
532
533 if (sample_id_all)
534 swap_sample_id_all(event, &event->aux + 1);
535}
536
0ad21f68
AH		 537static void perf_event__itrace_start_swap(union perf_event *event,
538 bool sample_id_all)
539{
540 event->itrace_start.pid = bswap_32(event->itrace_start.pid);
541 event->itrace_start.tid = bswap_32(event->itrace_start.tid);
542
543 if (sample_id_all)
544 swap_sample_id_all(event, &event->itrace_start + 1);
545}
546
0286039f
AH		 547static void perf_event__switch_swap(union perf_event *event, bool sample_id_all)
548{
549 if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE) {
550 event->context_switch.next_prev_pid =
551 bswap_32(event->context_switch.next_prev_pid);
552 event->context_switch.next_prev_tid =
553 bswap_32(event->context_switch.next_prev_tid);
554 }
555
556 if (sample_id_all)
557 swap_sample_id_all(event, &event->context_switch + 1);
558}
559
dd96c46b
JO		 560static void perf_event__throttle_swap(union perf_event *event,
561 bool sample_id_all)
562{
563 event->throttle.time = bswap_64(event->throttle.time);
564 event->throttle.id = bswap_64(event->throttle.id);
565 event->throttle.stream_id = bswap_64(event->throttle.stream_id);
566
567 if (sample_id_all)
568 swap_sample_id_all(event, &event->throttle + 1);
569}
570
e108c66e
JO		 571static u8 revbyte(u8 b)
572{
573 int rev = (b >> 4) | ((b & 0xf) << 4);
574 rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2);
575 rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1);
576 return (u8) rev;
577}
578
579/*
580 * XXX this is hack in attempt to carry flags bitfield
581 * throught endian village. ABI says:
582 *
583 * Bit-fields are allocated from right to left (least to most significant)
584 * on little-endian implementations and from left to right (most to least
585 * significant) on big-endian implementations.
586 *
587 * The above seems to be byte specific, so we need to reverse each
588 * byte of the bitfield. 'Internet' also says this might be implementation
589 * specific and we probably need proper fix and carry perf_event_attr
590 * bitfield flags in separate data file FEAT_ section. Thought this seems
591 * to work for now.
592 */
593static void swap_bitfield(u8 *p, unsigned len)
594{
595 unsigned i;
596
597 for (i = 0; i < len; i++) {
598 *p = revbyte(*p);
599 p++;
600 }
601}
602
eda3913b
DA		 603/* exported for swapping attributes in file header */
604void perf_event__attr_swap(struct perf_event_attr *attr)
605{
606 attr->type = bswap_32(attr->type);
607 attr->size = bswap_32(attr->size);
b30b6172
WN		 608
609#define bswap_safe(f, n) \
610 (attr->size > (offsetof(struct perf_event_attr, f) + \
611 sizeof(attr->f) * (n)))
612#define bswap_field(f, sz) \
613do { \
614 if (bswap_safe(f, 0)) \
615 attr->f = bswap_##sz(attr->f); \
616} while(0)
617#define bswap_field_32(f) bswap_field(f, 32)
618#define bswap_field_64(f) bswap_field(f, 64)
619
620 bswap_field_64(config);
621 bswap_field_64(sample_period);
622 bswap_field_64(sample_type);
623 bswap_field_64(read_format);
624 bswap_field_32(wakeup_events);
625 bswap_field_32(bp_type);
626 bswap_field_64(bp_addr);
627 bswap_field_64(bp_len);
628 bswap_field_64(branch_sample_type);
629 bswap_field_64(sample_regs_user);
630 bswap_field_32(sample_stack_user);
631 bswap_field_32(aux_watermark);
632
633 /*
634 * After read_format are bitfields. Check read_format because
635 * we are unable to use offsetof on bitfield.
636 */
637 if (bswap_safe(read_format, 1))
638 swap_bitfield((u8 *) (&attr->read_format + 1),
639 sizeof(u64));
640#undef bswap_field_64
641#undef bswap_field_32
642#undef bswap_field
643#undef bswap_safe
eda3913b
DA		 644}
645
268fb20f 646static void perf_event__hdr_attr_swap(union perf_event *event,
1d037ca1 647 bool sample_id_all __maybe_unused)
2c46dbb5
TZ		 648{
649 size_t size;
650
eda3913b 651 perf_event__attr_swap(&event->attr.attr);
2c46dbb5 652
8115d60c
ACM		 653 size = event->header.size;
654 size -= (void *)&event->attr.id - (void *)event;
655 mem_bswap_64(event->attr.id, size);
2c46dbb5
TZ		 656}
657
ffe77725
JO		 658static void perf_event__event_update_swap(union perf_event *event,
659 bool sample_id_all __maybe_unused)
660{
661 event->event_update.type = bswap_64(event->event_update.type);
662 event->event_update.id = bswap_64(event->event_update.id);
663}
664
268fb20f 665static void perf_event__event_type_swap(union perf_event *event,
1d037ca1 666 bool sample_id_all __maybe_unused)
cd19a035 667{
8115d60c
ACM		 668 event->event_type.event_type.event_id =
669 bswap_64(event->event_type.event_type.event_id);
cd19a035
TZ		 670}
671
268fb20f 672static void perf_event__tracing_data_swap(union perf_event *event,
1d037ca1 673 bool sample_id_all __maybe_unused)
9215545e 674{
8115d60c 675 event->tracing_data.size = bswap_32(event->tracing_data.size);
9215545e
TZ		 676}
677
a16ac023
AH		 678static void perf_event__auxtrace_info_swap(union perf_event *event,
679 bool sample_id_all __maybe_unused)
680{
681 size_t size;
682
683 event->auxtrace_info.type = bswap_32(event->auxtrace_info.type);
684
685 size = event->header.size;
686 size -= (void *)&event->auxtrace_info.priv - (void *)event;
687 mem_bswap_64(event->auxtrace_info.priv, size);
688}
689
690static void perf_event__auxtrace_swap(union perf_event *event,
691 bool sample_id_all __maybe_unused)
692{
693 event->auxtrace.size = bswap_64(event->auxtrace.size);
694 event->auxtrace.offset = bswap_64(event->auxtrace.offset);
695 event->auxtrace.reference = bswap_64(event->auxtrace.reference);
696 event->auxtrace.idx = bswap_32(event->auxtrace.idx);
697 event->auxtrace.tid = bswap_32(event->auxtrace.tid);
698 event->auxtrace.cpu = bswap_32(event->auxtrace.cpu);
699}
700
e9bf54d2
AH		 701static void perf_event__auxtrace_error_swap(union perf_event *event,
702 bool sample_id_all __maybe_unused)
703{
704 event->auxtrace_error.type = bswap_32(event->auxtrace_error.type);
705 event->auxtrace_error.code = bswap_32(event->auxtrace_error.code);
706 event->auxtrace_error.cpu = bswap_32(event->auxtrace_error.cpu);
707 event->auxtrace_error.pid = bswap_32(event->auxtrace_error.pid);
708 event->auxtrace_error.tid = bswap_32(event->auxtrace_error.tid);
709 event->auxtrace_error.ip = bswap_64(event->auxtrace_error.ip);
710}
711
5f3339d2
JO		 712static void perf_event__thread_map_swap(union perf_event *event,
713 bool sample_id_all __maybe_unused)
714{
715 unsigned i;
716
717 event->thread_map.nr = bswap_64(event->thread_map.nr);
718
719 for (i = 0; i < event->thread_map.nr; i++)
720 event->thread_map.entries[i].pid = bswap_64(event->thread_map.entries[i].pid);
721}
722
6640b6c2
JO		 723static void perf_event__cpu_map_swap(union perf_event *event,
724 bool sample_id_all __maybe_unused)
725{
726 struct cpu_map_data *data = &event->cpu_map.data;
727 struct cpu_map_entries *cpus;
728 struct cpu_map_mask *mask;
729 unsigned i;
730
731 data->type = bswap_64(data->type);
732
733 switch (data->type) {
734 case PERF_CPU_MAP__CPUS:
735 cpus = (struct cpu_map_entries *)data->data;
736
737 cpus->nr = bswap_16(cpus->nr);
738
739 for (i = 0; i < cpus->nr; i++)
740 cpus->cpu[i] = bswap_16(cpus->cpu[i]);
741 break;
742 case PERF_CPU_MAP__MASK:
743 mask = (struct cpu_map_mask *) data->data;
744
745 mask->nr = bswap_16(mask->nr);
746 mask->long_size = bswap_16(mask->long_size);
747
748 switch (mask->long_size) {
749 case 4: mem_bswap_32(&mask->mask, mask->nr); break;
750 case 8: mem_bswap_64(&mask->mask, mask->nr); break;
751 default:
752 pr_err("cpu_map swap: unsupported long size\n");
753 }
754 default:
755 break;
756 }
757}
758
374fb9e3
JO		 759static void perf_event__stat_config_swap(union perf_event *event,
760 bool sample_id_all __maybe_unused)
761{
762 u64 size;
763
764 size = event->stat_config.nr * sizeof(event->stat_config.data[0]);
765 size += 1; /* nr item itself */
766 mem_bswap_64(&event->stat_config.nr, size);
767}
768
d80518c9
JO		 769static void perf_event__stat_swap(union perf_event *event,
770 bool sample_id_all __maybe_unused)
771{
772 event->stat.id = bswap_64(event->stat.id);
773 event->stat.thread = bswap_32(event->stat.thread);
774 event->stat.cpu = bswap_32(event->stat.cpu);
775 event->stat.val = bswap_64(event->stat.val);
776 event->stat.ena = bswap_64(event->stat.ena);
777 event->stat.run = bswap_64(event->stat.run);
778}
779
2d8f0f18
JO		 780static void perf_event__stat_round_swap(union perf_event *event,
781 bool sample_id_all __maybe_unused)
782{
783 event->stat_round.type = bswap_64(event->stat_round.type);
784 event->stat_round.time = bswap_64(event->stat_round.time);
785}
786
268fb20f
JO		 787typedef void (*perf_event__swap_op)(union perf_event *event,
788 bool sample_id_all);
ba21594c 789
8115d60c
ACM		 790static perf_event__swap_op perf_event__swap_ops[] = {
791 [PERF_RECORD_MMAP] = perf_event__mmap_swap,
5c5e854b 792 [PERF_RECORD_MMAP2] = perf_event__mmap2_swap,
8115d60c
ACM		 793 [PERF_RECORD_COMM] = perf_event__comm_swap,
794 [PERF_RECORD_FORK] = perf_event__task_swap,
795 [PERF_RECORD_EXIT] = perf_event__task_swap,
796 [PERF_RECORD_LOST] = perf_event__all64_swap,
797 [PERF_RECORD_READ] = perf_event__read_swap,
dd96c46b
JO		 798 [PERF_RECORD_THROTTLE] = perf_event__throttle_swap,
799 [PERF_RECORD_UNTHROTTLE] = perf_event__throttle_swap,
8115d60c 800 [PERF_RECORD_SAMPLE] = perf_event__all64_swap,
4a96f7a0 801 [PERF_RECORD_AUX] = perf_event__aux_swap,
0ad21f68 802 [PERF_RECORD_ITRACE_START] = perf_event__itrace_start_swap,
c4937a91 803 [PERF_RECORD_LOST_SAMPLES] = perf_event__all64_swap,
0286039f
AH		 804 [PERF_RECORD_SWITCH] = perf_event__switch_swap,
805 [PERF_RECORD_SWITCH_CPU_WIDE] = perf_event__switch_swap,
eda3913b 806 [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap,
8115d60c
ACM		 807 [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap,
808 [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap,
809 [PERF_RECORD_HEADER_BUILD_ID] = NULL,
3c659eed 810 [PERF_RECORD_ID_INDEX] = perf_event__all64_swap,
a16ac023
AH		 811 [PERF_RECORD_AUXTRACE_INFO] = perf_event__auxtrace_info_swap,
812 [PERF_RECORD_AUXTRACE] = perf_event__auxtrace_swap,
e9bf54d2 813 [PERF_RECORD_AUXTRACE_ERROR] = perf_event__auxtrace_error_swap,
5f3339d2 814 [PERF_RECORD_THREAD_MAP] = perf_event__thread_map_swap,
6640b6c2 815 [PERF_RECORD_CPU_MAP] = perf_event__cpu_map_swap,
374fb9e3 816 [PERF_RECORD_STAT_CONFIG] = perf_event__stat_config_swap,
d80518c9 817 [PERF_RECORD_STAT] = perf_event__stat_swap,
2d8f0f18 818 [PERF_RECORD_STAT_ROUND] = perf_event__stat_round_swap,
ffe77725 819 [PERF_RECORD_EVENT_UPDATE] = perf_event__event_update_swap,
8115d60c 820 [PERF_RECORD_HEADER_MAX] = NULL,
ba21594c
ACM		 821};
822
d6b17beb
FW		 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 */
b7b61cbe 862static int process_finished_round(struct perf_tool *tool __maybe_unused,
1d037ca1 863 union perf_event *event __maybe_unused,
d704ebda 864 struct ordered_events *oe)
d6b17beb 865{
5531e162
AH		 866 if (dump_trace)
867 fprintf(stdout, "\n");
b7b61cbe 868 return ordered_events__flush(oe, OE_FLUSH__ROUND);
d6b17beb
FW		 869}
870
b7b61cbe
ACM		 871int perf_session__queue_event(struct perf_session *s, union perf_event *event,
872 struct perf_sample *sample, u64 file_offset)
c61e52ee 873{
4a6b362f 874 return ordered_events__queue(&s->ordered_events, event, sample, file_offset);
640c03ce 875}
c61e52ee 876
384b6055 877static void callchain__lbr_callstack_printf(struct perf_sample *sample)
640c03ce 878{
384b6055
KL		 879 struct ip_callchain *callchain = sample->callchain;
880 struct branch_stack *lbr_stack = sample->branch_stack;
881 u64 kernel_callchain_nr = callchain->nr;
640c03ce 882 unsigned int i;
c61e52ee 883
384b6055
KL		 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
924static 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 (has_branch_callstack(evsel))
931 callchain__lbr_callstack_printf(sample);
932
933 printf("... FP chain: nr:%" PRIu64 "\n", callchain->nr);
640c03ce 934
384b6055 935 for (i = 0; i < callchain->nr; i++)
9486aa38 936 printf("..... %2d: %016" PRIx64 "\n",
384b6055 937 i, callchain->ips[i]);
c61e52ee
FW		 938}
939
b5387528
RAV		 940static 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
0e332f03
AK		 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 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 }
b5387528
RAV		 958}
959
0f6a3015
JO		 960static 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
6a21c0b5
SE		 972static 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
978static 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
986static 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
352ea45a 998static void regs_user__printf(struct perf_sample *sample)
0f6a3015
JO		 999{
1000 struct regs_dump *user_regs = &sample->user_regs;
1001
6a21c0b5
SE		 1002 if (user_regs->regs)
1003 regs__printf("user", user_regs);
1004}
1005
1006static 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);
0f6a3015
JO		 1012}
1013
1014static 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
9fa8727a 1020static void perf_evlist__print_tstamp(struct perf_evlist *evlist,
8115d60c 1021 union perf_event *event,
8d50e5b4 1022 struct perf_sample *sample)
9c90a61c 1023{
9fa8727a 1024 u64 sample_type = __perf_evlist__combined_sample_type(evlist);
7f3be652 1025
9c90a61c 1026 if (event->header.type != PERF_RECORD_SAMPLE &&
9fa8727a 1027 !perf_evlist__sample_id_all(evlist)) {
9c90a61c
ACM		 1028 fputs("-1 -1 ", stdout);
1029 return;
1030 }
1031
7f3be652 1032 if ((sample_type & PERF_SAMPLE_CPU))
9c90a61c
ACM		 1033 printf("%u ", sample->cpu);
1034
7f3be652 1035 if (sample_type & PERF_SAMPLE_TIME)
9486aa38 1036 printf("%" PRIu64 " ", sample->time);
9c90a61c
ACM		 1037}
1038
9ede473c
JO		 1039static 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
9fa8727a 1069static void dump_event(struct perf_evlist *evlist, union perf_event *event,
8d50e5b4 1070 u64 file_offset, struct perf_sample *sample)
9aefcab0
TG		 1071{
1072 if (!dump_trace)
1073 return;
1074
9486aa38
ACM		 1075 printf("\n%#" PRIx64 " [%#x]: event: %d\n",
1076 file_offset, event->header.size, event->header.type);
9aefcab0
TG		 1077
1078 trace_event(event);
1079
1080 if (sample)
9fa8727a 1081 perf_evlist__print_tstamp(evlist, event, sample);
9aefcab0 1082
9486aa38 1083 printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset,
8115d60c 1084 event->header.size, perf_event__name(event->header.type));
9aefcab0
TG		 1085}
1086
0f6a3015 1087static void dump_sample(struct perf_evsel *evsel, union perf_event *event,
8d50e5b4 1088 struct perf_sample *sample)
9aefcab0 1089{
7f3be652
ACM		 1090 u64 sample_type;
1091
ddbc24b7
ACM		 1092 if (!dump_trace)
1093 return;
1094
0ea590ae 1095 printf("(IP, 0x%x): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n",
9486aa38 1096 event->header.misc, sample->pid, sample->tid, sample->ip,
7cec0922 1097 sample->period, sample->addr);
9aefcab0 1098
0f6a3015 1099 sample_type = evsel->attr.sample_type;
7f3be652
ACM		 1100
1101 if (sample_type & PERF_SAMPLE_CALLCHAIN)
384b6055 1102 callchain__printf(evsel, sample);
b5387528 1103
384b6055 1104 if ((sample_type & PERF_SAMPLE_BRANCH_STACK) && !has_branch_callstack(evsel))
b5387528 1105 branch_stack__printf(sample);
0f6a3015
JO		 1106
1107 if (sample_type & PERF_SAMPLE_REGS_USER)
352ea45a 1108 regs_user__printf(sample);
0f6a3015 1109
6a21c0b5
SE		 1110 if (sample_type & PERF_SAMPLE_REGS_INTR)
1111 regs_intr__printf(sample);
1112
0f6a3015
JO		 1113 if (sample_type & PERF_SAMPLE_STACK_USER)
1114 stack_user__printf(&sample->user_stack);
05484298
AK		 1115
1116 if (sample_type & PERF_SAMPLE_WEIGHT)
1117 printf("... weight: %" PRIu64 "\n", sample->weight);
98a3b32c
SE		 1118
1119 if (sample_type & PERF_SAMPLE_DATA_SRC)
1120 printf(" . data_src: 0x%"PRIx64"\n", sample->data_src);
9ede473c 1121
475eeab9
AK		 1122 if (sample_type & PERF_SAMPLE_TRANSACTION)
1123 printf("... transaction: %" PRIx64 "\n", sample->transaction);
1124
9ede473c
JO		 1125 if (sample_type & PERF_SAMPLE_READ)
1126 sample_read__printf(sample, evsel->attr.read_format);
9aefcab0
TG		 1127}
1128
54245fdc 1129static struct machine *machines__find_for_cpumode(struct machines *machines,
ef89325f
AH		 1130 union perf_event *event,
1131 struct perf_sample *sample)
743eb868
ACM		 1132{
1133 const u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
ad85ace0 1134 struct machine *machine;
743eb868 1135
7c0f4a41
DA		 1136 if (perf_guest &&
1137 ((cpumode == PERF_RECORD_MISC_GUEST_KERNEL) ||
1138 (cpumode == PERF_RECORD_MISC_GUEST_USER))) {
7fb0a5ee
ND		 1139 u32 pid;
1140
5c5e854b
SE		 1141 if (event->header.type == PERF_RECORD_MMAP
1142 || event->header.type == PERF_RECORD_MMAP2)
7fb0a5ee
ND		 1143 pid = event->mmap.pid;
1144 else
ef89325f 1145 pid = sample->pid;
7fb0a5ee 1146
54245fdc 1147 machine = machines__find(machines, pid);
ad85ace0 1148 if (!machine)
54245fdc 1149 machine = machines__find(machines, DEFAULT_GUEST_KERNEL_ID);
ad85ace0 1150 return machine;
7fb0a5ee 1151 }
743eb868 1152
54245fdc 1153 return &machines->host;
743eb868
ACM		 1154}
1155
313e53b0 1156static int deliver_sample_value(struct perf_evlist *evlist,
e4caec0d
JO		 1157 struct perf_tool *tool,
1158 union perf_event *event,
1159 struct perf_sample *sample,
1160 struct sample_read_value *v,
1161 struct machine *machine)
1162{
313e53b0 1163 struct perf_sample_id *sid = perf_evlist__id2sid(evlist, v->id);
e4caec0d 1164
e4caec0d
JO		 1165 if (sid) {
1166 sample->id = v->id;
1167 sample->period = v->value - sid->period;
1168 sid->period = v->value;
1169 }
1170
1171 if (!sid || sid->evsel == NULL) {
313e53b0 1172 ++evlist->stats.nr_unknown_id;
e4caec0d
JO		 1173 return 0;
1174 }
1175
1176 return tool->sample(tool, event, sample, sid->evsel, machine);
1177}
1178
313e53b0 1179static int deliver_sample_group(struct perf_evlist *evlist,
e4caec0d
JO		 1180 struct perf_tool *tool,
1181 union perf_event *event,
1182 struct perf_sample *sample,
1183 struct machine *machine)
1184{
1185 int ret = -EINVAL;
1186 u64 i;
1187
1188 for (i = 0; i < sample->read.group.nr; i++) {
313e53b0 1189 ret = deliver_sample_value(evlist, tool, event, sample,
e4caec0d
JO		 1190 &sample->read.group.values[i],
1191 machine);
1192 if (ret)
1193 break;
1194 }
1195
1196 return ret;
1197}
1198
1199static int
313e53b0 1200 perf_evlist__deliver_sample(struct perf_evlist *evlist,
e4caec0d
JO		 1201 struct perf_tool *tool,
1202 union perf_event *event,
1203 struct perf_sample *sample,
1204 struct perf_evsel *evsel,
1205 struct machine *machine)
1206{
1207 /* We know evsel != NULL. */
1208 u64 sample_type = evsel->attr.sample_type;
1209 u64 read_format = evsel->attr.read_format;
1210
1211 /* Standard sample delievery. */
1212 if (!(sample_type & PERF_SAMPLE_READ))
1213 return tool->sample(tool, event, sample, evsel, machine);
1214
1215 /* For PERF_SAMPLE_READ we have either single or group mode. */
1216 if (read_format & PERF_FORMAT_GROUP)
313e53b0 1217 return deliver_sample_group(evlist, tool, event, sample,
e4caec0d
JO		 1218 machine);
1219 else
313e53b0 1220 return deliver_sample_value(evlist, tool, event, sample,
e4caec0d
JO		 1221 &sample->read.one, machine);
1222}
1223
d10eb1eb
ACM		 1224static int machines__deliver_event(struct machines *machines,
1225 struct perf_evlist *evlist,
1226 union perf_event *event,
1227 struct perf_sample *sample,
1228 struct perf_tool *tool, u64 file_offset)
cbf41645 1229{
9e69c210 1230 struct perf_evsel *evsel;
743eb868 1231 struct machine *machine;
9e69c210 1232
9fa8727a 1233 dump_event(evlist, event, file_offset, sample);
532e7269 1234
313e53b0 1235 evsel = perf_evlist__id2evsel(evlist, sample->id);
7b27509f 1236
fa713a4e 1237 machine = machines__find_for_cpumode(machines, event, sample);
743eb868 1238
cbf41645
TG		 1239 switch (event->header.type) {
1240 case PERF_RECORD_SAMPLE:
9e69c210 1241 if (evsel == NULL) {
313e53b0 1242 ++evlist->stats.nr_unknown_id;
6782206b 1243 return 0;
9e69c210 1244 }
1b29ac59 1245 dump_sample(evsel, event, sample);
0c095715 1246 if (machine == NULL) {
313e53b0 1247 ++evlist->stats.nr_unprocessable_samples;
6782206b 1248 return 0;
0c095715 1249 }
313e53b0 1250 return perf_evlist__deliver_sample(evlist, tool, event, sample, evsel, machine);
cbf41645 1251 case PERF_RECORD_MMAP:
45694aa7 1252 return tool->mmap(tool, event, sample, machine);
5c5e854b 1253 case PERF_RECORD_MMAP2:
930e6fcd
KL		 1254 if (event->header.misc & PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT)
1255 ++evlist->stats.nr_proc_map_timeout;
5c5e854b 1256 return tool->mmap2(tool, event, sample, machine);
cbf41645 1257 case PERF_RECORD_COMM:
45694aa7 1258 return tool->comm(tool, event, sample, machine);
cbf41645 1259 case PERF_RECORD_FORK:
45694aa7 1260 return tool->fork(tool, event, sample, machine);
cbf41645 1261 case PERF_RECORD_EXIT:
45694aa7 1262 return tool->exit(tool, event, sample, machine);
cbf41645 1263 case PERF_RECORD_LOST:
45694aa7 1264 if (tool->lost == perf_event__process_lost)
313e53b0 1265 evlist->stats.total_lost += event->lost.lost;
45694aa7 1266 return tool->lost(tool, event, sample, machine);
c4937a91
KL		 1267 case PERF_RECORD_LOST_SAMPLES:
1268 if (tool->lost_samples == perf_event__process_lost_samples)
1269 evlist->stats.total_lost_samples += event->lost_samples.lost;
1270 return tool->lost_samples(tool, event, sample, machine);
cbf41645 1271 case PERF_RECORD_READ:
45694aa7 1272 return tool->read(tool, event, sample, evsel, machine);
cbf41645 1273 case PERF_RECORD_THROTTLE:
45694aa7 1274 return tool->throttle(tool, event, sample, machine);
cbf41645 1275 case PERF_RECORD_UNTHROTTLE:
45694aa7 1276 return tool->unthrottle(tool, event, sample, machine);
4a96f7a0 1277 case PERF_RECORD_AUX:
a38f48e3
AH		 1278 if (tool->aux == perf_event__process_aux &&
1279 (event->aux.flags & PERF_AUX_FLAG_TRUNCATED))
1280 evlist->stats.total_aux_lost += 1;
4a96f7a0 1281 return tool->aux(tool, event, sample, machine);
0ad21f68
AH		 1282 case PERF_RECORD_ITRACE_START:
1283 return tool->itrace_start(tool, event, sample, machine);
0286039f
AH		 1284 case PERF_RECORD_SWITCH:
1285 case PERF_RECORD_SWITCH_CPU_WIDE:
1286 return tool->context_switch(tool, event, sample, machine);
cbf41645 1287 default:
313e53b0 1288 ++evlist->stats.nr_unknown_events;
cbf41645
TG		 1289 return -1;
1290 }
1291}
1292
c446870d
AH		 1293static int perf_session__deliver_event(struct perf_session *session,
1294 union perf_event *event,
1295 struct perf_sample *sample,
1296 struct perf_tool *tool,
1297 u64 file_offset)
1298{
1299 int ret;
1300
1301 ret = auxtrace__process_event(session, event, sample, tool);
1302 if (ret < 0)
1303 return ret;
1304 if (ret > 0)
1305 return 0;
1306
1307 return machines__deliver_event(&session->machines, session->evlist,
1308 event, sample, tool, file_offset);
1309}
1310
d5652d86
AH		 1311static s64 perf_session__process_user_event(struct perf_session *session,
1312 union perf_event *event,
d5652d86 1313 u64 file_offset)
06aae590 1314{
d704ebda 1315 struct ordered_events *oe = &session->ordered_events;
9870d780 1316 struct perf_tool *tool = session->tool;
cc9784bd 1317 int fd = perf_data_file__fd(session->file);
10d0f086
ACM		 1318 int err;
1319
9fa8727a 1320 dump_event(session->evlist, event, file_offset, NULL);
06aae590 1321
cbf41645 1322 /* These events are processed right away */
06aae590 1323 switch (event->header.type) {
2c46dbb5 1324 case PERF_RECORD_HEADER_ATTR:
47c3d109 1325 err = tool->attr(tool, event, &session->evlist);
cfe1c414 1326 if (err == 0) {
7b56cce2 1327 perf_session__set_id_hdr_size(session);
cfe1c414
AH		 1328 perf_session__set_comm_exec(session);
1329 }
10d0f086 1330 return err;
ffe77725
JO		 1331 case PERF_RECORD_EVENT_UPDATE:
1332 return tool->event_update(tool, event, &session->evlist);
f67697bd
JO		 1333 case PERF_RECORD_HEADER_EVENT_TYPE:
1334 /*
1335 * Depreceated, but we need to handle it for sake
1336 * of old data files create in pipe mode.
1337 */
1338 return 0;
9215545e
TZ		 1339 case PERF_RECORD_HEADER_TRACING_DATA:
1340 /* setup for reading amidst mmap */
cc9784bd 1341 lseek(fd, file_offset, SEEK_SET);
47c3d109 1342 return tool->tracing_data(tool, event, session);
c7929e47 1343 case PERF_RECORD_HEADER_BUILD_ID:
45694aa7 1344 return tool->build_id(tool, event, session);
d6b17beb 1345 case PERF_RECORD_FINISHED_ROUND:
d704ebda 1346 return tool->finished_round(tool, event, oe);
3c659eed
AH		 1347 case PERF_RECORD_ID_INDEX:
1348 return tool->id_index(tool, event, session);
a16ac023
AH		 1349 case PERF_RECORD_AUXTRACE_INFO:
1350 return tool->auxtrace_info(tool, event, session);
1351 case PERF_RECORD_AUXTRACE:
1352 /* setup for reading amidst mmap */
1353 lseek(fd, file_offset + event->header.size, SEEK_SET);
1354 return tool->auxtrace(tool, event, session);
e9bf54d2 1355 case PERF_RECORD_AUXTRACE_ERROR:
85ed4729 1356 perf_session__auxtrace_error_inc(session, event);
e9bf54d2 1357 return tool->auxtrace_error(tool, event, session);
5f3339d2
JO		 1358 case PERF_RECORD_THREAD_MAP:
1359 return tool->thread_map(tool, event, session);
6640b6c2
JO		 1360 case PERF_RECORD_CPU_MAP:
1361 return tool->cpu_map(tool, event, session);
374fb9e3
JO		 1362 case PERF_RECORD_STAT_CONFIG:
1363 return tool->stat_config(tool, event, session);
d80518c9
JO		 1364 case PERF_RECORD_STAT:
1365 return tool->stat(tool, event, session);
2d8f0f18
JO		 1366 case PERF_RECORD_STAT_ROUND:
1367 return tool->stat_round(tool, event, session);
06aae590 1368 default:
ba74f064 1369 return -EINVAL;
06aae590 1370 }
ba74f064
TG		 1371}
1372
a293829d
AH		 1373int perf_session__deliver_synth_event(struct perf_session *session,
1374 union perf_event *event,
b7b61cbe 1375 struct perf_sample *sample)
a293829d 1376{
fa713a4e 1377 struct perf_evlist *evlist = session->evlist;
9870d780 1378 struct perf_tool *tool = session->tool;
fa713a4e
ACM		 1379
1380 events_stats__inc(&evlist->stats, event->header.type);
a293829d
AH		 1381
1382 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
b7b61cbe 1383 return perf_session__process_user_event(session, event, 0);
a293829d 1384
fa713a4e 1385 return machines__deliver_event(&session->machines, evlist, event, sample, tool, 0);
a293829d
AH		 1386}
1387
268fb20f
JO		 1388static void event_swap(union perf_event *event, bool sample_id_all)
1389{
1390 perf_event__swap_op swap;
1391
1392 swap = perf_event__swap_ops[event->header.type];
1393 if (swap)
1394 swap(event, sample_id_all);
1395}
1396
5a52f33a
AH		 1397int perf_session__peek_event(struct perf_session *session, off_t file_offset,
1398 void *buf, size_t buf_sz,
1399 union perf_event **event_ptr,
1400 struct perf_sample *sample)
1401{
1402 union perf_event *event;
1403 size_t hdr_sz, rest;
1404 int fd;
1405
1406 if (session->one_mmap && !session->header.needs_swap) {
1407 event = file_offset - session->one_mmap_offset +
1408 session->one_mmap_addr;
1409 goto out_parse_sample;
1410 }
1411
1412 if (perf_data_file__is_pipe(session->file))
1413 return -1;
1414
1415 fd = perf_data_file__fd(session->file);
1416 hdr_sz = sizeof(struct perf_event_header);
1417
1418 if (buf_sz < hdr_sz)
1419 return -1;
1420
1421 if (lseek(fd, file_offset, SEEK_SET) == (off_t)-1 ||
554e92ed 1422 readn(fd, buf, hdr_sz) != (ssize_t)hdr_sz)
5a52f33a
AH		 1423 return -1;
1424
1425 event = (union perf_event *)buf;
1426
1427 if (session->header.needs_swap)
1428 perf_event_header__bswap(&event->header);
1429
554e92ed 1430 if (event->header.size < hdr_sz || event->header.size > buf_sz)
5a52f33a
AH		 1431 return -1;
1432
1433 rest = event->header.size - hdr_sz;
1434
554e92ed 1435 if (readn(fd, buf, rest) != (ssize_t)rest)
5a52f33a
AH		 1436 return -1;
1437
1438 if (session->header.needs_swap)
1439 event_swap(event, perf_evlist__sample_id_all(session->evlist));
1440
1441out_parse_sample:
1442
1443 if (sample && event->header.type < PERF_RECORD_USER_TYPE_START &&
1444 perf_evlist__parse_sample(session->evlist, event, sample))
1445 return -1;
1446
1447 *event_ptr = event;
1448
1449 return 0;
1450}
1451
d5652d86 1452static s64 perf_session__process_event(struct perf_session *session,
b7b61cbe 1453 union perf_event *event, u64 file_offset)
ba74f064 1454{
313e53b0 1455 struct perf_evlist *evlist = session->evlist;
9870d780 1456 struct perf_tool *tool = session->tool;
8d50e5b4 1457 struct perf_sample sample;
ba74f064
TG		 1458 int ret;
1459
268fb20f 1460 if (session->header.needs_swap)
313e53b0 1461 event_swap(event, perf_evlist__sample_id_all(evlist));
ba74f064
TG		 1462
1463 if (event->header.type >= PERF_RECORD_HEADER_MAX)
1464 return -EINVAL;
1465
313e53b0 1466 events_stats__inc(&evlist->stats, event->header.type);
ba74f064
TG		 1467
1468 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
b7b61cbe 1469 return perf_session__process_user_event(session, event, file_offset);
cbf41645 1470
3dfc2c0a
TG		 1471 /*
1472 * For all kernel events we get the sample data
1473 */
313e53b0 1474 ret = perf_evlist__parse_sample(evlist, event, &sample);
5538beca
FW		 1475 if (ret)
1476 return ret;
3dfc2c0a 1477
0a8cb85c 1478 if (tool->ordered_events) {
b7b61cbe 1479 ret = perf_session__queue_event(session, event, &sample, file_offset);
cbf41645
TG		 1480 if (ret != -ETIME)
1481 return ret;
1482 }
1483
c446870d
AH		 1484 return perf_session__deliver_event(session, event, &sample, tool,
1485 file_offset);
06aae590
ACM		 1486}
1487
316c7136 1488void perf_event_header__bswap(struct perf_event_header *hdr)
ba21594c 1489{
316c7136
ACM		 1490 hdr->type = bswap_32(hdr->type);
1491 hdr->misc = bswap_16(hdr->misc);
1492 hdr->size = bswap_16(hdr->size);
ba21594c
ACM		 1493}
1494
b424eba2
ACM		 1495struct thread *perf_session__findnew(struct perf_session *session, pid_t pid)
1496{
1fcb8768 1497 return machine__findnew_thread(&session->machines.host, -1, pid);
b424eba2
ACM		 1498}
1499
9d8b172f 1500int perf_session__register_idle_thread(struct perf_session *session)
06aae590 1501{
1fcb8768 1502 struct thread *thread;
9d8b172f 1503 int err = 0;
06aae590 1504
1fcb8768 1505 thread = machine__findnew_thread(&session->machines.host, 0, 0);
162f0bef 1506 if (thread == NULL || thread__set_comm(thread, "swapper", 0)) {
06aae590 1507 pr_err("problem inserting idle task.\n");
9d8b172f 1508 err = -1;
06aae590
ACM		 1509 }
1510
9d8b172f
MH		 1511 /* machine__findnew_thread() got the thread, so put it */
1512 thread__put(thread);
1513 return err;
06aae590
ACM		 1514}
1515
9870d780 1516static void perf_session__warn_about_errors(const struct perf_session *session)
11095994 1517{
9870d780
ACM		 1518 const struct events_stats *stats = &session->evlist->stats;
1519 const struct ordered_events *oe = &session->ordered_events;
1520
1521 if (session->tool->lost == perf_event__process_lost &&
ccda068f 1522 stats->nr_events[PERF_RECORD_LOST] != 0) {
7b27509f
ACM		 1523 ui__warning("Processed %d events and lost %d chunks!\n\n"
1524 "Check IO/CPU overload!\n\n",
ccda068f
ACM		 1525 stats->nr_events[0],
1526 stats->nr_events[PERF_RECORD_LOST]);
11095994
ACM		 1527 }
1528
c4937a91
KL		 1529 if (session->tool->lost_samples == perf_event__process_lost_samples) {
1530 double drop_rate;
1531
1532 drop_rate = (double)stats->total_lost_samples /
1533 (double) (stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples);
1534 if (drop_rate > 0.05) {
6ba29c2f 1535 ui__warning("Processed %" PRIu64 " samples and lost %3.2f%% samples!\n\n",
c4937a91
KL		 1536 stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples,
1537 drop_rate * 100.0);
1538 }
1539 }
1540
a38f48e3
AH		 1541 if (session->tool->aux == perf_event__process_aux &&
1542 stats->total_aux_lost != 0) {
1543 ui__warning("AUX data lost %" PRIu64 " times out of %u!\n\n",
1544 stats->total_aux_lost,
1545 stats->nr_events[PERF_RECORD_AUX]);
1546 }
1547
ccda068f 1548 if (stats->nr_unknown_events != 0) {
11095994
ACM		 1549 ui__warning("Found %u unknown events!\n\n"
1550 "Is this an older tool processing a perf.data "
1551 "file generated by a more recent tool?\n\n"
1552 "If that is not the case, consider "
1553 "reporting to linux-kernel@vger.kernel.org.\n\n",
ccda068f 1554 stats->nr_unknown_events);
11095994
ACM		 1555 }
1556
ccda068f 1557 if (stats->nr_unknown_id != 0) {
9e69c210 1558 ui__warning("%u samples with id not present in the header\n",
ccda068f 1559 stats->nr_unknown_id);
9e69c210
ACM		 1560 }
1561
ccda068f 1562 if (stats->nr_invalid_chains != 0) {
75be989a
ACM		 1563 ui__warning("Found invalid callchains!\n\n"
1564 "%u out of %u events were discarded for this reason.\n\n"
1565 "Consider reporting to linux-kernel@vger.kernel.org.\n\n",
ccda068f
ACM		 1566 stats->nr_invalid_chains,
1567 stats->nr_events[PERF_RECORD_SAMPLE]);
75be989a 1568 }
0c095715 1569
ccda068f 1570 if (stats->nr_unprocessable_samples != 0) {
0c095715
JR		 1571 ui__warning("%u unprocessable samples recorded.\n"
1572 "Do you have a KVM guest running and not using 'perf kvm'?\n",
ccda068f 1573 stats->nr_unprocessable_samples);
0c095715 1574 }
f61ff6c0 1575
9870d780
ACM		 1576 if (oe->nr_unordered_events != 0)
1577 ui__warning("%u out of order events recorded.\n", oe->nr_unordered_events);
85ed4729
AH		 1578
1579 events_stats__auxtrace_error_warn(stats);
930e6fcd
KL		 1580
1581 if (stats->nr_proc_map_timeout != 0) {
1582 ui__warning("%d map information files for pre-existing threads were\n"
1583 "not processed, if there are samples for addresses they\n"
1584 "will not be resolved, you may find out which are these\n"
1585 "threads by running with -v and redirecting the output\n"
9d9cad76
KL		 1586 "to a file.\n"
1587 "The time limit to process proc map is too short?\n"
1588 "Increase it by --proc-map-timeout\n",
930e6fcd
KL		 1589 stats->nr_proc_map_timeout);
1590 }
11095994
ACM		 1591}
1592
a5499b37
AH		 1593static int perf_session__flush_thread_stack(struct thread *thread,
1594 void *p __maybe_unused)
1595{
1596 return thread_stack__flush(thread);
1597}
1598
1599static int perf_session__flush_thread_stacks(struct perf_session *session)
1600{
1601 return machines__for_each_thread(&session->machines,
1602 perf_session__flush_thread_stack,
1603 NULL);
1604}
1605
8dc58101
TZ		 1606volatile int session_done;
1607
b7b61cbe 1608static int __perf_session__process_pipe_events(struct perf_session *session)
8dc58101 1609{
fa713a4e 1610 struct ordered_events *oe = &session->ordered_events;
9870d780 1611 struct perf_tool *tool = session->tool;
316c7136 1612 int fd = perf_data_file__fd(session->file);
444d2866
SE		 1613 union perf_event *event;
1614 uint32_t size, cur_size = 0;
1615 void *buf = NULL;
d5652d86 1616 s64 skip = 0;
8dc58101 1617 u64 head;
727ebd54 1618 ssize_t err;
8dc58101
TZ		 1619 void *p;
1620
45694aa7 1621 perf_tool__fill_defaults(tool);
8dc58101
TZ		 1622
1623 head = 0;
444d2866
SE		 1624 cur_size = sizeof(union perf_event);
1625
1626 buf = malloc(cur_size);
1627 if (!buf)
1628 return -errno;
8dc58101 1629more:
444d2866 1630 event = buf;
cc9784bd 1631 err = readn(fd, event, sizeof(struct perf_event_header));
8dc58101
TZ		 1632 if (err <= 0) {
1633 if (err == 0)
1634 goto done;
1635
1636 pr_err("failed to read event header\n");
1637 goto out_err;
1638 }
1639
316c7136 1640 if (session->header.needs_swap)
444d2866 1641 perf_event_header__bswap(&event->header);
8dc58101 1642
444d2866 1643 size = event->header.size;
27389d78
AH		 1644 if (size < sizeof(struct perf_event_header)) {
1645 pr_err("bad event header size\n");
1646 goto out_err;
1647 }
8dc58101 1648
444d2866
SE		 1649 if (size > cur_size) {
1650 void *new = realloc(buf, size);
1651 if (!new) {
1652 pr_err("failed to allocate memory to read event\n");
1653 goto out_err;
1654 }
1655 buf = new;
1656 cur_size = size;
1657 event = buf;
1658 }
1659 p = event;
8dc58101
TZ		 1660 p += sizeof(struct perf_event_header);
1661
794e43b5 1662 if (size - sizeof(struct perf_event_header)) {
cc9784bd 1663 err = readn(fd, p, size - sizeof(struct perf_event_header));
794e43b5
TZ		 1664 if (err <= 0) {
1665 if (err == 0) {
1666 pr_err("unexpected end of event stream\n");
1667 goto done;
1668 }
8dc58101 1669
794e43b5
TZ		 1670 pr_err("failed to read event data\n");
1671 goto out_err;
1672 }
8dc58101
TZ		 1673 }
1674
b7b61cbe 1675 if ((skip = perf_session__process_event(session, event, head)) < 0) {
9389a460 1676 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
444d2866 1677 head, event->header.size, event->header.type);
9389a460
JO		 1678 err = -EINVAL;
1679 goto out_err;
8dc58101
TZ		 1680 }
1681
1682 head += size;
1683
8dc58101
TZ		 1684 if (skip > 0)
1685 head += skip;
1686
1687 if (!session_done())
1688 goto more;
1689done:
8c16b649 1690 /* do the final flush for ordered samples */
b7b61cbe 1691 err = ordered_events__flush(oe, OE_FLUSH__FINAL);
c446870d
AH		 1692 if (err)
1693 goto out_err;
1694 err = auxtrace__flush_events(session, tool);
a5499b37
AH		 1695 if (err)
1696 goto out_err;
1697 err = perf_session__flush_thread_stacks(session);
8dc58101 1698out_err:
444d2866 1699 free(buf);
9870d780 1700 perf_session__warn_about_errors(session);
adc56ed1 1701 ordered_events__free(&session->ordered_events);
c446870d 1702 auxtrace__free_events(session);
8dc58101
TZ		 1703 return err;
1704}
1705
998bedc8
FW		 1706static union perf_event *
1707fetch_mmaped_event(struct perf_session *session,
1708 u64 head, size_t mmap_size, char *buf)
1709{
1710 union perf_event *event;
1711
1712 /*
1713 * Ensure we have enough space remaining to read
1714 * the size of the event in the headers.
1715 */
1716 if (head + sizeof(event->header) > mmap_size)
1717 return NULL;
1718
1719 event = (union perf_event *)(buf + head);
1720
1721 if (session->header.needs_swap)
1722 perf_event_header__bswap(&event->header);
1723
27389d78
AH		 1724 if (head + event->header.size > mmap_size) {
1725 /* We're not fetching the event so swap back again */
1726 if (session->header.needs_swap)
1727 perf_event_header__bswap(&event->header);
998bedc8 1728 return NULL;
27389d78 1729 }
998bedc8
FW		 1730
1731 return event;
1732}
1733
35d48ddf
DM		 1734/*
1735 * On 64bit we can mmap the data file in one go. No need for tiny mmap
1736 * slices. On 32bit we use 32MB.
1737 */
1738#if BITS_PER_LONG == 64
1739#define MMAP_SIZE ULLONG_MAX
1740#define NUM_MMAPS 1
1741#else
1742#define MMAP_SIZE (32 * 1024 * 1024ULL)
1743#define NUM_MMAPS 128
1744#endif
1745
4ac30cf7
NK		 1746static int __perf_session__process_events(struct perf_session *session,
1747 u64 data_offset, u64 data_size,
b7b61cbe 1748 u64 file_size)
06aae590 1749{
fa713a4e 1750 struct ordered_events *oe = &session->ordered_events;
9870d780 1751 struct perf_tool *tool = session->tool;
cc9784bd 1752 int fd = perf_data_file__fd(session->file);
d5652d86 1753 u64 head, page_offset, file_offset, file_pos, size;
fe174207 1754 int err, mmap_prot, mmap_flags, map_idx = 0;
0c1fe6b2 1755 size_t mmap_size;
35d48ddf 1756 char *buf, *mmaps[NUM_MMAPS];
8115d60c 1757 union perf_event *event;
4d3001fd 1758 struct ui_progress prog;
d5652d86 1759 s64 skip;
0331ee0c 1760
45694aa7 1761 perf_tool__fill_defaults(tool);
06aae590 1762
0331ee0c
TG		 1763 page_offset = page_size * (data_offset / page_size);
1764 file_offset = page_offset;
1765 head = data_offset - page_offset;
06aae590 1766
381c02f6
MR		 1767 if (data_size == 0)
1768 goto out;
1769
1770 if (data_offset + data_size < file_size)
d6513281
TG		 1771 file_size = data_offset + data_size;
1772
4d3001fd 1773 ui_progress__init(&prog, file_size, "Processing events...");
55b44629 1774
35d48ddf 1775 mmap_size = MMAP_SIZE;
919d86d3 1776 if (mmap_size > file_size) {
55b44629 1777 mmap_size = file_size;
919d86d3
AH		 1778 session->one_mmap = true;
1779 }
55b44629 1780
fe174207
TG		 1781 memset(mmaps, 0, sizeof(mmaps));
1782
ba21594c
ACM		 1783 mmap_prot = PROT_READ;
1784 mmap_flags = MAP_SHARED;
1785
0331ee0c 1786 if (session->header.needs_swap) {
ba21594c
ACM		 1787 mmap_prot |= PROT_WRITE;
1788 mmap_flags = MAP_PRIVATE;
1789 }
06aae590 1790remap:
cc9784bd 1791 buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, fd,
55b44629 1792 file_offset);
06aae590
ACM		 1793 if (buf == MAP_FAILED) {
1794 pr_err("failed to mmap file\n");
1795 err = -errno;
1796 goto out_err;
1797 }
fe174207
TG		 1798 mmaps[map_idx] = buf;
1799 map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1);
d6513281 1800 file_pos = file_offset + head;
919d86d3
AH		 1801 if (session->one_mmap) {
1802 session->one_mmap_addr = buf;
1803 session->one_mmap_offset = file_offset;
1804 }
06aae590
ACM		 1805
1806more:
998bedc8
FW		 1807 event = fetch_mmaped_event(session, head, mmap_size, buf);
1808 if (!event) {
fe174207
TG		 1809 if (mmaps[map_idx]) {
1810 munmap(mmaps[map_idx], mmap_size);
1811 mmaps[map_idx] = NULL;
1812 }
06aae590 1813
0331ee0c
TG		 1814 page_offset = page_size * (head / page_size);
1815 file_offset += page_offset;
1816 head -= page_offset;
06aae590
ACM		 1817 goto remap;
1818 }
1819
1820 size = event->header.size;
1821
27389d78 1822 if (size < sizeof(struct perf_event_header) ||
b7b61cbe 1823 (skip = perf_session__process_event(session, event, file_pos)) < 0) {
9389a460
JO		 1824 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
1825 file_offset + head, event->header.size,
1826 event->header.type);
1827 err = -EINVAL;
1828 goto out_err;
06aae590
ACM		 1829 }
1830
6f917c70
AH		 1831 if (skip)
1832 size += skip;
1833
06aae590 1834 head += size;
d6513281 1835 file_pos += size;
06aae590 1836
4d3001fd 1837 ui_progress__update(&prog, size);
55b44629 1838
33e940a2 1839 if (session_done())
8c16b649 1840 goto out;
33e940a2 1841
d6513281 1842 if (file_pos < file_size)
06aae590 1843 goto more;
d6513281 1844
8c16b649 1845out:
c61e52ee 1846 /* do the final flush for ordered samples */
b7b61cbe 1847 err = ordered_events__flush(oe, OE_FLUSH__FINAL);
c446870d
AH		 1848 if (err)
1849 goto out_err;
1850 err = auxtrace__flush_events(session, tool);
a5499b37
AH		 1851 if (err)
1852 goto out_err;
1853 err = perf_session__flush_thread_stacks(session);
06aae590 1854out_err:
a5580f3e 1855 ui_progress__finish();
9870d780 1856 perf_session__warn_about_errors(session);
adc56ed1 1857 ordered_events__free(&session->ordered_events);
c446870d 1858 auxtrace__free_events(session);
919d86d3 1859 session->one_mmap = false;
06aae590
ACM		 1860 return err;
1861}
27295592 1862
b7b61cbe 1863int perf_session__process_events(struct perf_session *session)
6122e4e4 1864{
316c7136 1865 u64 size = perf_data_file__size(session->file);
6122e4e4
ACM		 1866 int err;
1867
9d8b172f 1868 if (perf_session__register_idle_thread(session) < 0)
6122e4e4
ACM		 1869 return -ENOMEM;
1870
316c7136
ACM		 1871 if (!perf_data_file__is_pipe(session->file))
1872 err = __perf_session__process_events(session,
1873 session->header.data_offset,
b7b61cbe 1874 session->header.data_size, size);
8dc58101 1875 else
b7b61cbe 1876 err = __perf_session__process_pipe_events(session);
88ca895d 1877
6122e4e4
ACM		 1878 return err;
1879}
1880
7f3be652 1881bool perf_session__has_traces(struct perf_session *session, const char *msg)
27295592 1882{
93ea01c2
DA		 1883 struct perf_evsel *evsel;
1884
0050f7aa 1885 evlist__for_each(session->evlist, evsel) {
93ea01c2
DA		 1886 if (evsel->attr.type == PERF_TYPE_TRACEPOINT)
1887 return true;
27295592
ACM		 1888 }
1889
93ea01c2
DA		 1890 pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg);
1891 return false;
27295592 1892}
56b03f3c 1893
743eb868
ACM		 1894int maps__set_kallsyms_ref_reloc_sym(struct map **maps,
1895 const char *symbol_name, u64 addr)
56b03f3c
ACM		 1896{
1897 char *bracket;
9de89fe7 1898 enum map_type i;
a1645ce1
ZY		 1899 struct ref_reloc_sym *ref;
1900
1901 ref = zalloc(sizeof(struct ref_reloc_sym));
1902 if (ref == NULL)
1903 return -ENOMEM;
56b03f3c 1904
a1645ce1
ZY		 1905 ref->name = strdup(symbol_name);
1906 if (ref->name == NULL) {
1907 free(ref);
56b03f3c 1908 return -ENOMEM;
a1645ce1 1909 }
56b03f3c 1910
a1645ce1 1911 bracket = strchr(ref->name, ']');
56b03f3c
ACM		 1912 if (bracket)
1913 *bracket = '\0';
1914
a1645ce1 1915 ref->addr = addr;
9de89fe7
ACM		 1916
1917 for (i = 0; i < MAP__NR_TYPES; ++i) {
a1645ce1 1918 struct kmap *kmap = map__kmap(maps[i]);
ba92732e
WN		 1919
1920 if (!kmap)
1921 continue;
a1645ce1 1922 kmap->ref_reloc_sym = ref;
9de89fe7
ACM		 1923 }
1924
56b03f3c
ACM		 1925 return 0;
1926}
1f626bc3 1927
316c7136 1928size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp)
1f626bc3 1929{
316c7136 1930 return machines__fprintf_dsos(&session->machines, fp);
1f626bc3 1931}
f869097e 1932
316c7136 1933size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp,
417c2ff6 1934 bool (skip)(struct dso *dso, int parm), int parm)
f869097e 1935{
316c7136 1936 return machines__fprintf_dsos_buildid(&session->machines, fp, skip, parm);
f869097e 1937}
e248de33
ACM		 1938
1939size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp)
1940{
c446870d
AH		 1941 size_t ret;
1942 const char *msg = "";
1943
1944 if (perf_header__has_feat(&session->header, HEADER_AUXTRACE))
1945 msg = " (excludes AUX area (e.g. instruction trace) decoded / synthesized events)";
1946
fe692ac8 1947 ret = fprintf(fp, "\nAggregated stats:%s\n", msg);
e248de33 1948
75be989a 1949 ret += events_stats__fprintf(&session->evlist->stats, fp);
e248de33
ACM		 1950 return ret;
1951}
c0230b2b 1952
b424eba2
ACM		 1953size_t perf_session__fprintf(struct perf_session *session, FILE *fp)
1954{
1955 /*
1956 * FIXME: Here we have to actually print all the machines in this
1957 * session, not just the host...
1958 */
876650e6 1959 return machine__fprintf(&session->machines.host, fp);
b424eba2
ACM		 1960}
1961
9cbdb702
DA		 1962struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session,
1963 unsigned int type)
1964{
1965 struct perf_evsel *pos;
1966
0050f7aa 1967 evlist__for_each(session->evlist, pos) {
9cbdb702
DA		 1968 if (pos->attr.type == type)
1969 return pos;
1970 }
1971 return NULL;
1972}
1973
a2cb3cf2 1974void perf_evsel__print_ip(struct perf_evsel *evsel, struct perf_sample *sample,
cc22e575 1975 struct addr_location *al,
307cbb92 1976 unsigned int print_opts, unsigned int stack_depth)
c0230b2b 1977{
c0230b2b 1978 struct callchain_cursor_node *node;
a6ffaf91
DA		 1979 int print_ip = print_opts & PRINT_IP_OPT_IP;
1980 int print_sym = print_opts & PRINT_IP_OPT_SYM;
1981 int print_dso = print_opts & PRINT_IP_OPT_DSO;
1982 int print_symoffset = print_opts & PRINT_IP_OPT_SYMOFFSET;
b0b35f01 1983 int print_oneline = print_opts & PRINT_IP_OPT_ONELINE;
cc8fae1d 1984 int print_srcline = print_opts & PRINT_IP_OPT_SRCLINE;
b0b35f01 1985 char s = print_oneline ? ' ' : '\t';
c0230b2b 1986
c0230b2b 1987 if (symbol_conf.use_callchain && sample->callchain) {
a2cb3cf2 1988 struct addr_location node_al;
c0230b2b 1989
cc8b7c2b
ACM		 1990 if (thread__resolve_callchain(al->thread, evsel,
1991 sample, NULL, NULL,
03cd1fed 1992 stack_depth) != 0) {
c0230b2b
DA		 1993 if (verbose)
1994 error("Failed to resolve callchain. Skipping\n");
1995 return;
1996 }
47260645 1997 callchain_cursor_commit(&callchain_cursor);
c0230b2b 1998
a2cb3cf2
AH		 1999 if (print_symoffset)
2000 node_al = *al;
2001
307cbb92 2002 while (stack_depth) {
a4eb24a4
AH		 2003 u64 addr = 0;
2004
47260645 2005 node = callchain_cursor_current(&callchain_cursor);
c0230b2b
DA		 2006 if (!node)
2007 break;
2008
d2ff1b14
DA		 2009 if (node->sym && node->sym->ignore)
2010 goto next;
2011
a6ffaf91 2012 if (print_ip)
b0b35f01 2013 printf("%c%16" PRIx64, s, node->ip);
a6ffaf91 2014
a4eb24a4
AH		 2015 if (node->map)
2016 addr = node->map->map_ip(node->map, node->ip);
2017
787bef17 2018 if (print_sym) {
547a92e0 2019 printf(" ");
251f426f 2020 if (print_symoffset) {
a4eb24a4 2021 node_al.addr = addr;
a2cb3cf2
AH		 2022 node_al.map = node->map;
2023 symbol__fprintf_symname_offs(node->sym, &node_al, stdout);
251f426f
DA		 2024 } else
2025 symbol__fprintf_symname(node->sym, stdout);
610723f2 2026 }
251f426f 2027
610723f2 2028 if (print_dso) {
547a92e0 2029 printf(" (");
52deff71 2030 map__fprintf_dsoname(node->map, stdout);
547a92e0 2031 printf(")");
787bef17 2032 }
b0b35f01 2033
cc8fae1d
AH		 2034 if (print_srcline)
2035 map__fprintf_srcline(node->map, addr, "\n ",
2036 stdout);
2037
b0b35f01
DA		 2038 if (!print_oneline)
2039 printf("\n");
c0230b2b 2040
307cbb92 2041 stack_depth--;
d2ff1b14
DA		 2042next:
2043 callchain_cursor_advance(&callchain_cursor);
c0230b2b
DA		 2044 }
2045
2046 } else {
a2cb3cf2 2047 if (al->sym && al->sym->ignore)
d2ff1b14
DA		 2048 return;
2049
a6ffaf91
DA		 2050 if (print_ip)
2051 printf("%16" PRIx64, sample->ip);
2052
787bef17 2053 if (print_sym) {
547a92e0 2054 printf(" ");
a978f2ab 2055 if (print_symoffset)
a2cb3cf2 2056 symbol__fprintf_symname_offs(al->sym, al,
a978f2ab
AN		 2057 stdout);
2058 else
a2cb3cf2 2059 symbol__fprintf_symname(al->sym, stdout);
610723f2
DA		 2060 }
2061
2062 if (print_dso) {
547a92e0 2063 printf(" (");
a2cb3cf2 2064 map__fprintf_dsoname(al->map, stdout);
547a92e0 2065 printf(")");
787bef17 2066 }
cc8fae1d
AH		 2067
2068 if (print_srcline)
2069 map__fprintf_srcline(al->map, al->addr, "\n ", stdout);
c0230b2b
DA		 2070 }
2071}
5d67be97
AB		 2072
2073int perf_session__cpu_bitmap(struct perf_session *session,
2074 const char *cpu_list, unsigned long *cpu_bitmap)
2075{
8bac41cb 2076 int i, err = -1;
5d67be97
AB		 2077 struct cpu_map *map;
2078
2079 for (i = 0; i < PERF_TYPE_MAX; ++i) {
2080 struct perf_evsel *evsel;
2081
2082 evsel = perf_session__find_first_evtype(session, i);
2083 if (!evsel)
2084 continue;
2085
2086 if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) {
2087 pr_err("File does not contain CPU events. "
2088 "Remove -c option to proceed.\n");
2089 return -1;
2090 }
2091 }
2092
2093 map = cpu_map__new(cpu_list);
47fbe53b
DA		 2094 if (map == NULL) {
2095 pr_err("Invalid cpu_list\n");
2096 return -1;
2097 }
5d67be97
AB		 2098
2099 for (i = 0; i < map->nr; i++) {
2100 int cpu = map->map[i];
2101
2102 if (cpu >= MAX_NR_CPUS) {
2103 pr_err("Requested CPU %d too large. "
2104 "Consider raising MAX_NR_CPUS\n", cpu);
8bac41cb 2105 goto out_delete_map;
5d67be97
AB		 2106 }
2107
2108 set_bit(cpu, cpu_bitmap);
2109 }
2110
8bac41cb
SF		 2111 err = 0;
2112
2113out_delete_map:
f30a79b0 2114 cpu_map__put(map);
8bac41cb 2115 return err;
5d67be97 2116}
fbe96f29
SE		 2117
2118void perf_session__fprintf_info(struct perf_session *session, FILE *fp,
2119 bool full)
2120{
2121 struct stat st;
c5765ece 2122 int fd, ret;
fbe96f29
SE		 2123
2124 if (session == NULL || fp == NULL)
2125 return;
2126
c5765ece
MI		 2127 fd = perf_data_file__fd(session->file);
2128
cc9784bd 2129 ret = fstat(fd, &st);
fbe96f29
SE		 2130 if (ret == -1)
2131 return;
2132
2133 fprintf(fp, "# ========\n");
2134 fprintf(fp, "# captured on: %s", ctime(&st.st_ctime));
2135 perf_header__fprintf_info(session, fp, full);
2136 fprintf(fp, "# ========\n#\n");
2137}
da378962
ACM		 2138
2139
2140int __perf_session__set_tracepoints_handlers(struct perf_session *session,
2141 const struct perf_evsel_str_handler *assocs,
2142 size_t nr_assocs)
2143{
da378962 2144 struct perf_evsel *evsel;
da378962
ACM		 2145 size_t i;
2146 int err;
2147
2148 for (i = 0; i < nr_assocs; i++) {
ccf53eac
ACM		 2149 /*
2150 * Adding a handler for an event not in the session,
2151 * just ignore it.
2152 */
2153 evsel = perf_evlist__find_tracepoint_by_name(session->evlist, assocs[i].name);
da378962 2154 if (evsel == NULL)
ccf53eac 2155 continue;
da378962
ACM		 2156
2157 err = -EEXIST;
744a9719 2158 if (evsel->handler != NULL)
ccf53eac 2159 goto out;
744a9719 2160 evsel->handler = assocs[i].handler;
da378962
ACM		 2161 }
2162
2163 err = 0;
2164out:
2165 return err;
da378962 2166}
3c659eed
AH		 2167
2168int perf_event__process_id_index(struct perf_tool *tool __maybe_unused,
2169 union perf_event *event,
2170 struct perf_session *session)
2171{
2172 struct perf_evlist *evlist = session->evlist;
2173 struct id_index_event *ie = &event->id_index;
2174 size_t i, nr, max_nr;
2175
2176 max_nr = (ie->header.size - sizeof(struct id_index_event)) /
2177 sizeof(struct id_index_entry);
2178 nr = ie->nr;
2179 if (nr > max_nr)
2180 return -EINVAL;
2181
2182 if (dump_trace)
2183 fprintf(stdout, " nr: %zu\n", nr);
2184
2185 for (i = 0; i < nr; i++) {
2186 struct id_index_entry *e = &ie->entries[i];
2187 struct perf_sample_id *sid;
2188
2189 if (dump_trace) {
2190 fprintf(stdout, " ... id: %"PRIu64, e->id);
2191 fprintf(stdout, " idx: %"PRIu64, e->idx);
2192 fprintf(stdout, " cpu: %"PRId64, e->cpu);
2193 fprintf(stdout, " tid: %"PRId64"\n", e->tid);
2194 }
2195
2196 sid = perf_evlist__id2sid(evlist, e->id);
2197 if (!sid)
2198 return -ENOENT;
2199 sid->idx = e->idx;
2200 sid->cpu = e->cpu;
2201 sid->tid = e->tid;
2202 }
2203 return 0;
2204}
2205
2206int perf_event__synthesize_id_index(struct perf_tool *tool,
2207 perf_event__handler_t process,
2208 struct perf_evlist *evlist,
2209 struct machine *machine)
2210{
2211 union perf_event *ev;
2212 struct perf_evsel *evsel;
2213 size_t nr = 0, i = 0, sz, max_nr, n;
2214 int err;
2215
2216 pr_debug2("Synthesizing id index\n");
2217
2218 max_nr = (UINT16_MAX - sizeof(struct id_index_event)) /
2219 sizeof(struct id_index_entry);
2220
cba9b847 2221 evlist__for_each(evlist, evsel)
3c659eed
AH		 2222 nr += evsel->ids;
2223
2224 n = nr > max_nr ? max_nr : nr;
2225 sz = sizeof(struct id_index_event) + n * sizeof(struct id_index_entry);
2226 ev = zalloc(sz);
2227 if (!ev)
2228 return -ENOMEM;
2229
2230 ev->id_index.header.type = PERF_RECORD_ID_INDEX;
2231 ev->id_index.header.size = sz;
2232 ev->id_index.nr = n;
2233
cba9b847 2234 evlist__for_each(evlist, evsel) {
3c659eed
AH		 2235 u32 j;
2236
2237 for (j = 0; j < evsel->ids; j++) {
2238 struct id_index_entry *e;
2239 struct perf_sample_id *sid;
2240
2241 if (i >= n) {
2242 err = process(tool, ev, NULL, machine);
2243 if (err)
2244 goto out_err;
2245 nr -= n;
2246 i = 0;
2247 }
2248
2249 e = &ev->id_index.entries[i++];
2250
2251 e->id = evsel->id[j];
2252
2253 sid = perf_evlist__id2sid(evlist, e->id);
2254 if (!sid) {
2255 free(ev);
2256 return -ENOENT;
2257 }
2258
2259 e->idx = sid->idx;
2260 e->cpu = sid->cpu;
2261 e->tid = sid->tid;
2262 }
2263 }
2264
2265 sz = sizeof(struct id_index_event) + nr * sizeof(struct id_index_entry);
2266 ev->id_index.header.size = sz;
2267 ev->id_index.nr = nr;
2268
2269 err = process(tool, ev, NULL, machine);
2270out_err:
2271 free(ev);
2272
2273 return err;
2274}
Linux kernel - Deliverables
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