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perf hists: Enlarge pid sort entry size
[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
3ba78bd0
JO		 40 if (perf_header__has_feat(&session->header, HEADER_STAT))
41 return 0;
42
316c7136 43 if (!perf_evlist__valid_sample_type(session->evlist)) {
e87b4911 44 pr_err("non matching sample_type\n");
6a4d98d7 45 return -1;
c2a70653
ACM		 46 }
47
316c7136 48 if (!perf_evlist__valid_sample_id_all(session->evlist)) {
e87b4911 49 pr_err("non matching sample_id_all\n");
6a4d98d7 50 return -1;
c2a70653
ACM		 51 }
52
316c7136 53 if (!perf_evlist__valid_read_format(session->evlist)) {
e87b4911 54 pr_err("non matching read_format\n");
6a4d98d7 55 return -1;
9ede473c
JO		 56 }
57
94c744b6 58 return 0;
94c744b6
ACM		 59}
60
7b56cce2 61void perf_session__set_id_hdr_size(struct perf_session *session)
9c90a61c 62{
7b56cce2
ACM		 63 u16 id_hdr_size = perf_evlist__id_hdr_size(session->evlist);
64
7b56cce2 65 machines__set_id_hdr_size(&session->machines, id_hdr_size);
9c90a61c
ACM		 66}
67
316c7136 68int perf_session__create_kernel_maps(struct perf_session *session)
a1645ce1 69{
316c7136 70 int ret = machine__create_kernel_maps(&session->machines.host);
a1645ce1 71
a1645ce1 72 if (ret >= 0)
316c7136 73 ret = machines__create_guest_kernel_maps(&session->machines);
a1645ce1
ZY		 74 return ret;
75}
76
316c7136 77static void perf_session__destroy_kernel_maps(struct perf_session *session)
076c6e45 78{
316c7136 79 machines__destroy_kernel_maps(&session->machines);
076c6e45
ACM		 80}
81
cfe1c414
AH		 82static bool perf_session__has_comm_exec(struct perf_session *session)
83{
84 struct perf_evsel *evsel;
85
86 evlist__for_each(session->evlist, evsel) {
87 if (evsel->attr.comm_exec)
88 return true;
89 }
90
91 return false;
92}
93
94static void perf_session__set_comm_exec(struct perf_session *session)
95{
96 bool comm_exec = perf_session__has_comm_exec(session);
97
98 machines__set_comm_exec(&session->machines, comm_exec);
99}
100
d10eb1eb 101static int ordered_events__deliver_event(struct ordered_events *oe,
9870d780 102 struct ordered_event *event)
d10eb1eb 103{
9870d780
ACM		 104 struct perf_sample sample;
105 struct perf_session *session = container_of(oe, struct perf_session,
106 ordered_events);
107 int ret = perf_evlist__parse_sample(session->evlist, event->event, &sample);
108
109 if (ret) {
110 pr_err("Can't parse sample, err = %d\n", ret);
111 return ret;
112 }
113
c446870d
AH		 114 return perf_session__deliver_event(session, event->event, &sample,
115 session->tool, event->file_offset);
d10eb1eb
ACM		 116}
117
f5fc1412
JO		 118struct perf_session *perf_session__new(struct perf_data_file *file,
119 bool repipe, struct perf_tool *tool)
94c744b6 120{
316c7136 121 struct perf_session *session = zalloc(sizeof(*session));
efad1415 122
316c7136 123 if (!session)
94c744b6
ACM		 124 goto out;
125
316c7136 126 session->repipe = repipe;
9870d780 127 session->tool = tool;
99fa2984 128 INIT_LIST_HEAD(&session->auxtrace_index);
316c7136 129 machines__init(&session->machines);
9870d780 130 ordered_events__init(&session->ordered_events, ordered_events__deliver_event);
94c744b6 131
6a4d98d7
JO		 132 if (file) {
133 if (perf_data_file__open(file))
64abebf7 134 goto out_delete;
6a4d98d7 135
316c7136 136 session->file = file;
6a4d98d7
JO		 137
138 if (perf_data_file__is_read(file)) {
316c7136 139 if (perf_session__open(session) < 0)
6a4d98d7
JO		 140 goto out_close;
141
316c7136 142 perf_session__set_id_hdr_size(session);
cfe1c414 143 perf_session__set_comm_exec(session);
6a4d98d7 144 }
4cde998d
ACM		 145 } else {
146 session->machines.host.env = &perf_env;
6a4d98d7
JO		 147 }
148
149 if (!file || perf_data_file__is_write(file)) {
64abebf7
ACM		 150 /*
151 * In O_RDONLY mode this will be performed when reading the
8115d60c 152 * kernel MMAP event, in perf_event__process_mmap().
64abebf7 153 */
316c7136 154 if (perf_session__create_kernel_maps(session) < 0)
a5c2a4c9 155 pr_warning("Cannot read kernel map\n");
64abebf7 156 }
d549c769 157
45694aa7 158 if (tool && tool->ordering_requires_timestamps &&
0a8cb85c 159 tool->ordered_events && !perf_evlist__sample_id_all(session->evlist)) {
21ef97f0 160 dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n");
0a8cb85c 161 tool->ordered_events = false;
d10eb1eb 162 }
21ef97f0 163
316c7136 164 return session;
6a4d98d7
JO		 165
166 out_close:
167 perf_data_file__close(file);
168 out_delete:
316c7136 169 perf_session__delete(session);
6a4d98d7 170 out:
4aa65636 171 return NULL;
94c744b6
ACM		 172}
173
b424eba2
ACM		 174static void perf_session__delete_threads(struct perf_session *session)
175{
876650e6 176 machine__delete_threads(&session->machines.host);
b424eba2
ACM		 177}
178
316c7136 179void perf_session__delete(struct perf_session *session)
94c744b6 180{
c446870d 181 auxtrace__free(session);
99fa2984 182 auxtrace_index__free(&session->auxtrace_index);
316c7136 183 perf_session__destroy_kernel_maps(session);
316c7136 184 perf_session__delete_threads(session);
f0ce888c 185 perf_env__exit(&session->header.env);
316c7136
ACM		 186 machines__exit(&session->machines);
187 if (session->file)
188 perf_data_file__close(session->file);
189 free(session);
94c744b6 190}
a328626b 191
47c3d109
AH		 192static int process_event_synth_tracing_data_stub(struct perf_tool *tool
193 __maybe_unused,
194 union perf_event *event
1d037ca1
IT		 195 __maybe_unused,
196 struct perf_session *session
197 __maybe_unused)
d20deb64
ACM		 198{
199 dump_printf(": unhandled!\n");
200 return 0;
201}
202
47c3d109
AH		 203static int process_event_synth_attr_stub(struct perf_tool *tool __maybe_unused,
204 union perf_event *event __maybe_unused,
1d037ca1
IT		 205 struct perf_evlist **pevlist
206 __maybe_unused)
10d0f086
ACM		 207{
208 dump_printf(": unhandled!\n");
209 return 0;
210}
211
ffe77725
JO		 212static int process_event_synth_event_update_stub(struct perf_tool *tool __maybe_unused,
213 union perf_event *event __maybe_unused,
214 struct perf_evlist **pevlist
215 __maybe_unused)
216{
2d2aea6a
JO		 217 if (dump_trace)
218 perf_event__fprintf_event_update(event, stdout);
219
ffe77725
JO		 220 dump_printf(": unhandled!\n");
221 return 0;
222}
223
1d037ca1
IT		 224static int process_event_sample_stub(struct perf_tool *tool __maybe_unused,
225 union perf_event *event __maybe_unused,
226 struct perf_sample *sample __maybe_unused,
227 struct perf_evsel *evsel __maybe_unused,
228 struct machine *machine __maybe_unused)
9e69c210
ACM		 229{
230 dump_printf(": unhandled!\n");
231 return 0;
232}
233
1d037ca1
IT		 234static int process_event_stub(struct perf_tool *tool __maybe_unused,
235 union perf_event *event __maybe_unused,
236 struct perf_sample *sample __maybe_unused,
237 struct machine *machine __maybe_unused)
06aae590
ACM		 238{
239 dump_printf(": unhandled!\n");
240 return 0;
241}
242
1d037ca1
IT		 243static int process_finished_round_stub(struct perf_tool *tool __maybe_unused,
244 union perf_event *event __maybe_unused,
d704ebda 245 struct ordered_events *oe __maybe_unused)
743eb868
ACM		 246{
247 dump_printf(": unhandled!\n");
248 return 0;
249}
250
45694aa7 251static int process_finished_round(struct perf_tool *tool,
d20deb64 252 union perf_event *event,
d704ebda 253 struct ordered_events *oe);
d6b17beb 254
a16ac023
AH		 255static int skipn(int fd, off_t n)
256{
257 char buf[4096];
258 ssize_t ret;
259
260 while (n > 0) {
261 ret = read(fd, buf, min(n, (off_t)sizeof(buf)));
262 if (ret <= 0)
263 return ret;
264 n -= ret;
265 }
266
267 return 0;
268}
269
270static s64 process_event_auxtrace_stub(struct perf_tool *tool __maybe_unused,
271 union perf_event *event,
272 struct perf_session *session
273 __maybe_unused)
274{
275 dump_printf(": unhandled!\n");
276 if (perf_data_file__is_pipe(session->file))
277 skipn(perf_data_file__fd(session->file), event->auxtrace.size);
278 return event->auxtrace.size;
279}
280
5fb0ac16
AH		 281static int process_event_op2_stub(struct perf_tool *tool __maybe_unused,
282 union perf_event *event __maybe_unused,
283 struct perf_session *session __maybe_unused)
e9bf54d2
AH		 284{
285 dump_printf(": unhandled!\n");
286 return 0;
287}
288
5f3339d2
JO		 289
290static
291int process_event_thread_map_stub(struct perf_tool *tool __maybe_unused,
292 union perf_event *event __maybe_unused,
293 struct perf_session *session __maybe_unused)
294{
2d2aea6a
JO		 295 if (dump_trace)
296 perf_event__fprintf_thread_map(event, stdout);
297
5f3339d2
JO		 298 dump_printf(": unhandled!\n");
299 return 0;
300}
301
6640b6c2
JO		 302static
303int process_event_cpu_map_stub(struct perf_tool *tool __maybe_unused,
304 union perf_event *event __maybe_unused,
305 struct perf_session *session __maybe_unused)
306{
2d2aea6a
JO		 307 if (dump_trace)
308 perf_event__fprintf_cpu_map(event, stdout);
309
6640b6c2
JO		 310 dump_printf(": unhandled!\n");
311 return 0;
312}
313
374fb9e3
JO		 314static
315int process_event_stat_config_stub(struct perf_tool *tool __maybe_unused,
316 union perf_event *event __maybe_unused,
317 struct perf_session *session __maybe_unused)
318{
2d2aea6a
JO		 319 if (dump_trace)
320 perf_event__fprintf_stat_config(event, stdout);
321
374fb9e3
JO		 322 dump_printf(": unhandled!\n");
323 return 0;
324}
325
d80518c9
JO		 326static int process_stat_stub(struct perf_tool *tool __maybe_unused,
327 union perf_event *event __maybe_unused,
328 struct perf_session *perf_session
329 __maybe_unused)
330{
2d2aea6a
JO		 331 if (dump_trace)
332 perf_event__fprintf_stat(event, stdout);
333
d80518c9
JO		 334 dump_printf(": unhandled!\n");
335 return 0;
336}
337
2d8f0f18
JO		 338static int process_stat_round_stub(struct perf_tool *tool __maybe_unused,
339 union perf_event *event __maybe_unused,
340 struct perf_session *perf_session
341 __maybe_unused)
342{
2d2aea6a
JO		 343 if (dump_trace)
344 perf_event__fprintf_stat_round(event, stdout);
345
2d8f0f18
JO		 346 dump_printf(": unhandled!\n");
347 return 0;
348}
349
9c501402 350void perf_tool__fill_defaults(struct perf_tool *tool)
06aae590 351{
45694aa7
ACM		 352 if (tool->sample == NULL)
353 tool->sample = process_event_sample_stub;
354 if (tool->mmap == NULL)
355 tool->mmap = process_event_stub;
6adb0b0a
DA		 356 if (tool->mmap2 == NULL)
357 tool->mmap2 = process_event_stub;
45694aa7
ACM		 358 if (tool->comm == NULL)
359 tool->comm = process_event_stub;
360 if (tool->fork == NULL)
361 tool->fork = process_event_stub;
362 if (tool->exit == NULL)
363 tool->exit = process_event_stub;
364 if (tool->lost == NULL)
365 tool->lost = perf_event__process_lost;
c4937a91
KL		 366 if (tool->lost_samples == NULL)
367 tool->lost_samples = perf_event__process_lost_samples;
4a96f7a0
AH		 368 if (tool->aux == NULL)
369 tool->aux = perf_event__process_aux;
0ad21f68
AH		 370 if (tool->itrace_start == NULL)
371 tool->itrace_start = perf_event__process_itrace_start;
0286039f
AH		 372 if (tool->context_switch == NULL)
373 tool->context_switch = perf_event__process_switch;
45694aa7
ACM		 374 if (tool->read == NULL)
375 tool->read = process_event_sample_stub;
376 if (tool->throttle == NULL)
377 tool->throttle = process_event_stub;
378 if (tool->unthrottle == NULL)
379 tool->unthrottle = process_event_stub;
380 if (tool->attr == NULL)
381 tool->attr = process_event_synth_attr_stub;
ffe77725
JO		 382 if (tool->event_update == NULL)
383 tool->event_update = process_event_synth_event_update_stub;
45694aa7
ACM		 384 if (tool->tracing_data == NULL)
385 tool->tracing_data = process_event_synth_tracing_data_stub;
386 if (tool->build_id == NULL)
5fb0ac16 387 tool->build_id = process_event_op2_stub;
45694aa7 388 if (tool->finished_round == NULL) {
0a8cb85c 389 if (tool->ordered_events)
45694aa7 390 tool->finished_round = process_finished_round;
d6b17beb 391 else
45694aa7 392 tool->finished_round = process_finished_round_stub;
d6b17beb 393 }
3c659eed 394 if (tool->id_index == NULL)
5fb0ac16 395 tool->id_index = process_event_op2_stub;
a16ac023 396 if (tool->auxtrace_info == NULL)
5fb0ac16 397 tool->auxtrace_info = process_event_op2_stub;
a16ac023
AH		 398 if (tool->auxtrace == NULL)
399 tool->auxtrace = process_event_auxtrace_stub;
e9bf54d2 400 if (tool->auxtrace_error == NULL)
5fb0ac16 401 tool->auxtrace_error = process_event_op2_stub;
5f3339d2
JO		 402 if (tool->thread_map == NULL)
403 tool->thread_map = process_event_thread_map_stub;
6640b6c2
JO		 404 if (tool->cpu_map == NULL)
405 tool->cpu_map = process_event_cpu_map_stub;
374fb9e3
JO		 406 if (tool->stat_config == NULL)
407 tool->stat_config = process_event_stat_config_stub;
d80518c9
JO		 408 if (tool->stat == NULL)
409 tool->stat = process_stat_stub;
2d8f0f18
JO		 410 if (tool->stat_round == NULL)
411 tool->stat_round = process_stat_round_stub;
46bc29b9
AH		 412 if (tool->time_conv == NULL)
413 tool->time_conv = process_event_op2_stub;
06aae590 414}
48000a1a 415
268fb20f
JO		 416static void swap_sample_id_all(union perf_event *event, void *data)
417{
418 void *end = (void *) event + event->header.size;
419 int size = end - data;
420
421 BUG_ON(size % sizeof(u64));
422 mem_bswap_64(data, size);
423}
424
425static void perf_event__all64_swap(union perf_event *event,
1d037ca1 426 bool sample_id_all __maybe_unused)
ba21594c 427{
8115d60c
ACM		 428 struct perf_event_header *hdr = &event->header;
429 mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr));
ba21594c
ACM		 430}
431
268fb20f 432static void perf_event__comm_swap(union perf_event *event, bool sample_id_all)
ba21594c 433{
8115d60c
ACM		 434 event->comm.pid = bswap_32(event->comm.pid);
435 event->comm.tid = bswap_32(event->comm.tid);
268fb20f
JO		 436
437 if (sample_id_all) {
438 void *data = &event->comm.comm;
439
9ac3e487 440 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
268fb20f
JO		 441 swap_sample_id_all(event, data);
442 }
ba21594c
ACM		 443}
444
268fb20f
JO		 445static void perf_event__mmap_swap(union perf_event *event,
446 bool sample_id_all)
ba21594c 447{
8115d60c
ACM		 448 event->mmap.pid = bswap_32(event->mmap.pid);
449 event->mmap.tid = bswap_32(event->mmap.tid);
450 event->mmap.start = bswap_64(event->mmap.start);
451 event->mmap.len = bswap_64(event->mmap.len);
452 event->mmap.pgoff = bswap_64(event->mmap.pgoff);
268fb20f
JO		 453
454 if (sample_id_all) {
455 void *data = &event->mmap.filename;
456
9ac3e487 457 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
268fb20f
JO		 458 swap_sample_id_all(event, data);
459 }
ba21594c
ACM		 460}
461
5c5e854b
SE		 462static void perf_event__mmap2_swap(union perf_event *event,
463 bool sample_id_all)
464{
465 event->mmap2.pid = bswap_32(event->mmap2.pid);
466 event->mmap2.tid = bswap_32(event->mmap2.tid);
467 event->mmap2.start = bswap_64(event->mmap2.start);
468 event->mmap2.len = bswap_64(event->mmap2.len);
469 event->mmap2.pgoff = bswap_64(event->mmap2.pgoff);
470 event->mmap2.maj = bswap_32(event->mmap2.maj);
471 event->mmap2.min = bswap_32(event->mmap2.min);
472 event->mmap2.ino = bswap_64(event->mmap2.ino);
473
474 if (sample_id_all) {
475 void *data = &event->mmap2.filename;
476
477 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
478 swap_sample_id_all(event, data);
479 }
480}
268fb20f 481static void perf_event__task_swap(union perf_event *event, bool sample_id_all)
ba21594c 482{
8115d60c
ACM		 483 event->fork.pid = bswap_32(event->fork.pid);
484 event->fork.tid = bswap_32(event->fork.tid);
485 event->fork.ppid = bswap_32(event->fork.ppid);
486 event->fork.ptid = bswap_32(event->fork.ptid);
487 event->fork.time = bswap_64(event->fork.time);
268fb20f
JO		 488
489 if (sample_id_all)
490 swap_sample_id_all(event, &event->fork + 1);
ba21594c
ACM		 491}
492
268fb20f 493static void perf_event__read_swap(union perf_event *event, bool sample_id_all)
ba21594c 494{
8115d60c
ACM		 495 event->read.pid = bswap_32(event->read.pid);
496 event->read.tid = bswap_32(event->read.tid);
497 event->read.value = bswap_64(event->read.value);
498 event->read.time_enabled = bswap_64(event->read.time_enabled);
499 event->read.time_running = bswap_64(event->read.time_running);
500 event->read.id = bswap_64(event->read.id);
268fb20f
JO		 501
502 if (sample_id_all)
503 swap_sample_id_all(event, &event->read + 1);
ba21594c
ACM		 504}
505
4a96f7a0
AH		 506static void perf_event__aux_swap(union perf_event *event, bool sample_id_all)
507{
508 event->aux.aux_offset = bswap_64(event->aux.aux_offset);
509 event->aux.aux_size = bswap_64(event->aux.aux_size);
510 event->aux.flags = bswap_64(event->aux.flags);
511
512 if (sample_id_all)
513 swap_sample_id_all(event, &event->aux + 1);
514}
515
0ad21f68
AH		 516static void perf_event__itrace_start_swap(union perf_event *event,
517 bool sample_id_all)
518{
519 event->itrace_start.pid = bswap_32(event->itrace_start.pid);
520 event->itrace_start.tid = bswap_32(event->itrace_start.tid);
521
522 if (sample_id_all)
523 swap_sample_id_all(event, &event->itrace_start + 1);
524}
525
0286039f
AH		 526static void perf_event__switch_swap(union perf_event *event, bool sample_id_all)
527{
528 if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE) {
529 event->context_switch.next_prev_pid =
530 bswap_32(event->context_switch.next_prev_pid);
531 event->context_switch.next_prev_tid =
532 bswap_32(event->context_switch.next_prev_tid);
533 }
534
535 if (sample_id_all)
536 swap_sample_id_all(event, &event->context_switch + 1);
537}
538
dd96c46b
JO		 539static void perf_event__throttle_swap(union perf_event *event,
540 bool sample_id_all)
541{
542 event->throttle.time = bswap_64(event->throttle.time);
543 event->throttle.id = bswap_64(event->throttle.id);
544 event->throttle.stream_id = bswap_64(event->throttle.stream_id);
545
546 if (sample_id_all)
547 swap_sample_id_all(event, &event->throttle + 1);
548}
549
e108c66e
JO		 550static u8 revbyte(u8 b)
551{
552 int rev = (b >> 4) | ((b & 0xf) << 4);
553 rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2);
554 rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1);
555 return (u8) rev;
556}
557
558/*
559 * XXX this is hack in attempt to carry flags bitfield
bd1a0be5 560 * through endian village. ABI says:
e108c66e
JO		 561 *
562 * Bit-fields are allocated from right to left (least to most significant)
563 * on little-endian implementations and from left to right (most to least
564 * significant) on big-endian implementations.
565 *
566 * The above seems to be byte specific, so we need to reverse each
567 * byte of the bitfield. 'Internet' also says this might be implementation
568 * specific and we probably need proper fix and carry perf_event_attr
569 * bitfield flags in separate data file FEAT_ section. Thought this seems
570 * to work for now.
571 */
572static void swap_bitfield(u8 *p, unsigned len)
573{
574 unsigned i;
575
576 for (i = 0; i < len; i++) {
577 *p = revbyte(*p);
578 p++;
579 }
580}
581
eda3913b
DA		 582/* exported for swapping attributes in file header */
583void perf_event__attr_swap(struct perf_event_attr *attr)
584{
585 attr->type = bswap_32(attr->type);
586 attr->size = bswap_32(attr->size);
b30b6172
WN		 587
588#define bswap_safe(f, n) \
589 (attr->size > (offsetof(struct perf_event_attr, f) + \
590 sizeof(attr->f) * (n)))
591#define bswap_field(f, sz) \
592do { \
593 if (bswap_safe(f, 0)) \
594 attr->f = bswap_##sz(attr->f); \
595} while(0)
792d48b4 596#define bswap_field_16(f) bswap_field(f, 16)
b30b6172
WN		 597#define bswap_field_32(f) bswap_field(f, 32)
598#define bswap_field_64(f) bswap_field(f, 64)
599
600 bswap_field_64(config);
601 bswap_field_64(sample_period);
602 bswap_field_64(sample_type);
603 bswap_field_64(read_format);
604 bswap_field_32(wakeup_events);
605 bswap_field_32(bp_type);
606 bswap_field_64(bp_addr);
607 bswap_field_64(bp_len);
608 bswap_field_64(branch_sample_type);
609 bswap_field_64(sample_regs_user);
610 bswap_field_32(sample_stack_user);
611 bswap_field_32(aux_watermark);
792d48b4 612 bswap_field_16(sample_max_stack);
b30b6172
WN		 613
614 /*
615 * After read_format are bitfields. Check read_format because
616 * we are unable to use offsetof on bitfield.
617 */
618 if (bswap_safe(read_format, 1))
619 swap_bitfield((u8 *) (&attr->read_format + 1),
620 sizeof(u64));
621#undef bswap_field_64
622#undef bswap_field_32
623#undef bswap_field
624#undef bswap_safe
eda3913b
DA		 625}
626
268fb20f 627static void perf_event__hdr_attr_swap(union perf_event *event,
1d037ca1 628 bool sample_id_all __maybe_unused)
2c46dbb5
TZ		 629{
630 size_t size;
631
eda3913b 632 perf_event__attr_swap(&event->attr.attr);
2c46dbb5 633
8115d60c
ACM		 634 size = event->header.size;
635 size -= (void *)&event->attr.id - (void *)event;
636 mem_bswap_64(event->attr.id, size);
2c46dbb5
TZ		 637}
638
ffe77725
JO		 639static void perf_event__event_update_swap(union perf_event *event,
640 bool sample_id_all __maybe_unused)
641{
642 event->event_update.type = bswap_64(event->event_update.type);
643 event->event_update.id = bswap_64(event->event_update.id);
644}
645
268fb20f 646static void perf_event__event_type_swap(union perf_event *event,
1d037ca1 647 bool sample_id_all __maybe_unused)
cd19a035 648{
8115d60c
ACM		 649 event->event_type.event_type.event_id =
650 bswap_64(event->event_type.event_type.event_id);
cd19a035
TZ		 651}
652
268fb20f 653static void perf_event__tracing_data_swap(union perf_event *event,
1d037ca1 654 bool sample_id_all __maybe_unused)
9215545e 655{
8115d60c 656 event->tracing_data.size = bswap_32(event->tracing_data.size);
9215545e
TZ		 657}
658
a16ac023
AH		 659static void perf_event__auxtrace_info_swap(union perf_event *event,
660 bool sample_id_all __maybe_unused)
661{
662 size_t size;
663
664 event->auxtrace_info.type = bswap_32(event->auxtrace_info.type);
665
666 size = event->header.size;
667 size -= (void *)&event->auxtrace_info.priv - (void *)event;
668 mem_bswap_64(event->auxtrace_info.priv, size);
669}
670
671static void perf_event__auxtrace_swap(union perf_event *event,
672 bool sample_id_all __maybe_unused)
673{
674 event->auxtrace.size = bswap_64(event->auxtrace.size);
675 event->auxtrace.offset = bswap_64(event->auxtrace.offset);
676 event->auxtrace.reference = bswap_64(event->auxtrace.reference);
677 event->auxtrace.idx = bswap_32(event->auxtrace.idx);
678 event->auxtrace.tid = bswap_32(event->auxtrace.tid);
679 event->auxtrace.cpu = bswap_32(event->auxtrace.cpu);
680}
681
e9bf54d2
AH		 682static void perf_event__auxtrace_error_swap(union perf_event *event,
683 bool sample_id_all __maybe_unused)
684{
685 event->auxtrace_error.type = bswap_32(event->auxtrace_error.type);
686 event->auxtrace_error.code = bswap_32(event->auxtrace_error.code);
687 event->auxtrace_error.cpu = bswap_32(event->auxtrace_error.cpu);
688 event->auxtrace_error.pid = bswap_32(event->auxtrace_error.pid);
689 event->auxtrace_error.tid = bswap_32(event->auxtrace_error.tid);
690 event->auxtrace_error.ip = bswap_64(event->auxtrace_error.ip);
691}
692
5f3339d2
JO		 693static void perf_event__thread_map_swap(union perf_event *event,
694 bool sample_id_all __maybe_unused)
695{
696 unsigned i;
697
698 event->thread_map.nr = bswap_64(event->thread_map.nr);
699
700 for (i = 0; i < event->thread_map.nr; i++)
701 event->thread_map.entries[i].pid = bswap_64(event->thread_map.entries[i].pid);
702}
703
6640b6c2
JO		 704static void perf_event__cpu_map_swap(union perf_event *event,
705 bool sample_id_all __maybe_unused)
706{
707 struct cpu_map_data *data = &event->cpu_map.data;
708 struct cpu_map_entries *cpus;
709 struct cpu_map_mask *mask;
710 unsigned i;
711
712 data->type = bswap_64(data->type);
713
714 switch (data->type) {
715 case PERF_CPU_MAP__CPUS:
716 cpus = (struct cpu_map_entries *)data->data;
717
718 cpus->nr = bswap_16(cpus->nr);
719
720 for (i = 0; i < cpus->nr; i++)
721 cpus->cpu[i] = bswap_16(cpus->cpu[i]);
722 break;
723 case PERF_CPU_MAP__MASK:
724 mask = (struct cpu_map_mask *) data->data;
725
726 mask->nr = bswap_16(mask->nr);
727 mask->long_size = bswap_16(mask->long_size);
728
729 switch (mask->long_size) {
730 case 4: mem_bswap_32(&mask->mask, mask->nr); break;
731 case 8: mem_bswap_64(&mask->mask, mask->nr); break;
732 default:
733 pr_err("cpu_map swap: unsupported long size\n");
734 }
735 default:
736 break;
737 }
738}
739
374fb9e3
JO		 740static void perf_event__stat_config_swap(union perf_event *event,
741 bool sample_id_all __maybe_unused)
742{
743 u64 size;
744
745 size = event->stat_config.nr * sizeof(event->stat_config.data[0]);
746 size += 1; /* nr item itself */
747 mem_bswap_64(&event->stat_config.nr, size);
748}
749
d80518c9
JO		 750static void perf_event__stat_swap(union perf_event *event,
751 bool sample_id_all __maybe_unused)
752{
753 event->stat.id = bswap_64(event->stat.id);
754 event->stat.thread = bswap_32(event->stat.thread);
755 event->stat.cpu = bswap_32(event->stat.cpu);
756 event->stat.val = bswap_64(event->stat.val);
757 event->stat.ena = bswap_64(event->stat.ena);
758 event->stat.run = bswap_64(event->stat.run);
759}
760
2d8f0f18
JO		 761static void perf_event__stat_round_swap(union perf_event *event,
762 bool sample_id_all __maybe_unused)
763{
764 event->stat_round.type = bswap_64(event->stat_round.type);
765 event->stat_round.time = bswap_64(event->stat_round.time);
766}
767
268fb20f
JO		 768typedef void (*perf_event__swap_op)(union perf_event *event,
769 bool sample_id_all);
ba21594c 770
8115d60c
ACM		 771static perf_event__swap_op perf_event__swap_ops[] = {
772 [PERF_RECORD_MMAP] = perf_event__mmap_swap,
5c5e854b 773 [PERF_RECORD_MMAP2] = perf_event__mmap2_swap,
8115d60c
ACM		 774 [PERF_RECORD_COMM] = perf_event__comm_swap,
775 [PERF_RECORD_FORK] = perf_event__task_swap,
776 [PERF_RECORD_EXIT] = perf_event__task_swap,
777 [PERF_RECORD_LOST] = perf_event__all64_swap,
778 [PERF_RECORD_READ] = perf_event__read_swap,
dd96c46b
JO		 779 [PERF_RECORD_THROTTLE] = perf_event__throttle_swap,
780 [PERF_RECORD_UNTHROTTLE] = perf_event__throttle_swap,
8115d60c 781 [PERF_RECORD_SAMPLE] = perf_event__all64_swap,
4a96f7a0 782 [PERF_RECORD_AUX] = perf_event__aux_swap,
0ad21f68 783 [PERF_RECORD_ITRACE_START] = perf_event__itrace_start_swap,
c4937a91 784 [PERF_RECORD_LOST_SAMPLES] = perf_event__all64_swap,
0286039f
AH		 785 [PERF_RECORD_SWITCH] = perf_event__switch_swap,
786 [PERF_RECORD_SWITCH_CPU_WIDE] = perf_event__switch_swap,
eda3913b 787 [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap,
8115d60c
ACM		 788 [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap,
789 [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap,
790 [PERF_RECORD_HEADER_BUILD_ID] = NULL,
3c659eed 791 [PERF_RECORD_ID_INDEX] = perf_event__all64_swap,
a16ac023
AH		 792 [PERF_RECORD_AUXTRACE_INFO] = perf_event__auxtrace_info_swap,
793 [PERF_RECORD_AUXTRACE] = perf_event__auxtrace_swap,
e9bf54d2 794 [PERF_RECORD_AUXTRACE_ERROR] = perf_event__auxtrace_error_swap,
5f3339d2 795 [PERF_RECORD_THREAD_MAP] = perf_event__thread_map_swap,
6640b6c2 796 [PERF_RECORD_CPU_MAP] = perf_event__cpu_map_swap,
374fb9e3 797 [PERF_RECORD_STAT_CONFIG] = perf_event__stat_config_swap,
d80518c9 798 [PERF_RECORD_STAT] = perf_event__stat_swap,
2d8f0f18 799 [PERF_RECORD_STAT_ROUND] = perf_event__stat_round_swap,
ffe77725 800 [PERF_RECORD_EVENT_UPDATE] = perf_event__event_update_swap,
46bc29b9 801 [PERF_RECORD_TIME_CONV] = perf_event__all64_swap,
8115d60c 802 [PERF_RECORD_HEADER_MAX] = NULL,
ba21594c
ACM		 803};
804
d6b17beb
FW		 805/*
806 * When perf record finishes a pass on every buffers, it records this pseudo
807 * event.
808 * We record the max timestamp t found in the pass n.
809 * Assuming these timestamps are monotonic across cpus, we know that if
810 * a buffer still has events with timestamps below t, they will be all
811 * available and then read in the pass n + 1.
812 * Hence when we start to read the pass n + 2, we can safely flush every
813 * events with timestamps below t.
814 *
815 * ============ PASS n =================
816 * CPU 0 | CPU 1
817 * |
818 * cnt1 timestamps | cnt2 timestamps
819 * 1 | 2
820 * 2 | 3
821 * - | 4 <--- max recorded
822 *
823 * ============ PASS n + 1 ==============
824 * CPU 0 | CPU 1
825 * |
826 * cnt1 timestamps | cnt2 timestamps
827 * 3 | 5
828 * 4 | 6
829 * 5 | 7 <---- max recorded
830 *
831 * Flush every events below timestamp 4
832 *
833 * ============ PASS n + 2 ==============
834 * CPU 0 | CPU 1
835 * |
836 * cnt1 timestamps | cnt2 timestamps
837 * 6 | 8
838 * 7 | 9
839 * - | 10
840 *
841 * Flush every events below timestamp 7
842 * etc...
843 */
b7b61cbe 844static int process_finished_round(struct perf_tool *tool __maybe_unused,
1d037ca1 845 union perf_event *event __maybe_unused,
d704ebda 846 struct ordered_events *oe)
d6b17beb 847{
5531e162
AH		 848 if (dump_trace)
849 fprintf(stdout, "\n");
b7b61cbe 850 return ordered_events__flush(oe, OE_FLUSH__ROUND);
d6b17beb
FW		 851}
852
b7b61cbe
ACM		 853int perf_session__queue_event(struct perf_session *s, union perf_event *event,
854 struct perf_sample *sample, u64 file_offset)
c61e52ee 855{
4a6b362f 856 return ordered_events__queue(&s->ordered_events, event, sample, file_offset);
640c03ce 857}
c61e52ee 858
384b6055 859static void callchain__lbr_callstack_printf(struct perf_sample *sample)
640c03ce 860{
384b6055
KL		 861 struct ip_callchain *callchain = sample->callchain;
862 struct branch_stack *lbr_stack = sample->branch_stack;
863 u64 kernel_callchain_nr = callchain->nr;
640c03ce 864 unsigned int i;
c61e52ee 865
384b6055
KL		 866 for (i = 0; i < kernel_callchain_nr; i++) {
867 if (callchain->ips[i] == PERF_CONTEXT_USER)
868 break;
869 }
870
871 if ((i != kernel_callchain_nr) && lbr_stack->nr) {
872 u64 total_nr;
873 /*
874 * LBR callstack can only get user call chain,
875 * i is kernel call chain number,
876 * 1 is PERF_CONTEXT_USER.
877 *
878 * The user call chain is stored in LBR registers.
879 * LBR are pair registers. The caller is stored
880 * in "from" register, while the callee is stored
881 * in "to" register.
882 * For example, there is a call stack
883 * "A"->"B"->"C"->"D".
884 * The LBR registers will recorde like
885 * "C"->"D", "B"->"C", "A"->"B".
886 * So only the first "to" register and all "from"
887 * registers are needed to construct the whole stack.
888 */
889 total_nr = i + 1 + lbr_stack->nr + 1;
890 kernel_callchain_nr = i + 1;
891
892 printf("... LBR call chain: nr:%" PRIu64 "\n", total_nr);
893
894 for (i = 0; i < kernel_callchain_nr; i++)
895 printf("..... %2d: %016" PRIx64 "\n",
896 i, callchain->ips[i]);
897
898 printf("..... %2d: %016" PRIx64 "\n",
899 (int)(kernel_callchain_nr), lbr_stack->entries[0].to);
900 for (i = 0; i < lbr_stack->nr; i++)
901 printf("..... %2d: %016" PRIx64 "\n",
902 (int)(i + kernel_callchain_nr + 1), lbr_stack->entries[i].from);
903 }
904}
905
906static void callchain__printf(struct perf_evsel *evsel,
907 struct perf_sample *sample)
908{
909 unsigned int i;
910 struct ip_callchain *callchain = sample->callchain;
911
acf2abbd 912 if (perf_evsel__has_branch_callstack(evsel))
384b6055
KL		 913 callchain__lbr_callstack_printf(sample);
914
915 printf("... FP chain: nr:%" PRIu64 "\n", callchain->nr);
640c03ce 916
384b6055 917 for (i = 0; i < callchain->nr; i++)
9486aa38 918 printf("..... %2d: %016" PRIx64 "\n",
384b6055 919 i, callchain->ips[i]);
c61e52ee
FW		 920}
921
b5387528
RAV		 922static void branch_stack__printf(struct perf_sample *sample)
923{
924 uint64_t i;
925
926 printf("... branch stack: nr:%" PRIu64 "\n", sample->branch_stack->nr);
927
0e332f03
AK		 928 for (i = 0; i < sample->branch_stack->nr; i++) {
929 struct branch_entry *e = &sample->branch_stack->entries[i];
930
931 printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 " %hu cycles %s%s%s%s %x\n",
932 i, e->from, e->to,
933 e->flags.cycles,
934 e->flags.mispred ? "M" : " ",
935 e->flags.predicted ? "P" : " ",
936 e->flags.abort ? "A" : " ",
937 e->flags.in_tx ? "T" : " ",
938 (unsigned)e->flags.reserved);
939 }
b5387528
RAV		 940}
941
0f6a3015
JO		 942static void regs_dump__printf(u64 mask, u64 *regs)
943{
944 unsigned rid, i = 0;
945
946 for_each_set_bit(rid, (unsigned long *) &mask, sizeof(mask) * 8) {
947 u64 val = regs[i++];
948
949 printf(".... %-5s 0x%" PRIx64 "\n",
950 perf_reg_name(rid), val);
951 }
952}
953
6a21c0b5
SE		 954static const char *regs_abi[] = {
955 [PERF_SAMPLE_REGS_ABI_NONE] = "none",
956 [PERF_SAMPLE_REGS_ABI_32] = "32-bit",
957 [PERF_SAMPLE_REGS_ABI_64] = "64-bit",
958};
959
960static inline const char *regs_dump_abi(struct regs_dump *d)
961{
962 if (d->abi > PERF_SAMPLE_REGS_ABI_64)
963 return "unknown";
964
965 return regs_abi[d->abi];
966}
967
968static void regs__printf(const char *type, struct regs_dump *regs)
969{
970 u64 mask = regs->mask;
971
972 printf("... %s regs: mask 0x%" PRIx64 " ABI %s\n",
973 type,
974 mask,
975 regs_dump_abi(regs));
976
977 regs_dump__printf(mask, regs->regs);
978}
979
352ea45a 980static void regs_user__printf(struct perf_sample *sample)
0f6a3015
JO		 981{
982 struct regs_dump *user_regs = &sample->user_regs;
983
6a21c0b5
SE		 984 if (user_regs->regs)
985 regs__printf("user", user_regs);
986}
987
988static void regs_intr__printf(struct perf_sample *sample)
989{
990 struct regs_dump *intr_regs = &sample->intr_regs;
991
992 if (intr_regs->regs)
993 regs__printf("intr", intr_regs);
0f6a3015
JO		 994}
995
996static void stack_user__printf(struct stack_dump *dump)
997{
998 printf("... ustack: size %" PRIu64 ", offset 0x%x\n",
999 dump->size, dump->offset);
1000}
1001
9fa8727a 1002static void perf_evlist__print_tstamp(struct perf_evlist *evlist,
8115d60c 1003 union perf_event *event,
8d50e5b4 1004 struct perf_sample *sample)
9c90a61c 1005{
9fa8727a 1006 u64 sample_type = __perf_evlist__combined_sample_type(evlist);
7f3be652 1007
9c90a61c 1008 if (event->header.type != PERF_RECORD_SAMPLE &&
9fa8727a 1009 !perf_evlist__sample_id_all(evlist)) {
9c90a61c
ACM		 1010 fputs("-1 -1 ", stdout);
1011 return;
1012 }
1013
7f3be652 1014 if ((sample_type & PERF_SAMPLE_CPU))
9c90a61c
ACM		 1015 printf("%u ", sample->cpu);
1016
7f3be652 1017 if (sample_type & PERF_SAMPLE_TIME)
9486aa38 1018 printf("%" PRIu64 " ", sample->time);
9c90a61c
ACM		 1019}
1020
9ede473c
JO		 1021static void sample_read__printf(struct perf_sample *sample, u64 read_format)
1022{
1023 printf("... sample_read:\n");
1024
1025 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
1026 printf("...... time enabled %016" PRIx64 "\n",
1027 sample->read.time_enabled);
1028
1029 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
1030 printf("...... time running %016" PRIx64 "\n",
1031 sample->read.time_running);
1032
1033 if (read_format & PERF_FORMAT_GROUP) {
1034 u64 i;
1035
1036 printf(".... group nr %" PRIu64 "\n", sample->read.group.nr);
1037
1038 for (i = 0; i < sample->read.group.nr; i++) {
1039 struct sample_read_value *value;
1040
1041 value = &sample->read.group.values[i];
1042 printf("..... id %016" PRIx64
1043 ", value %016" PRIx64 "\n",
1044 value->id, value->value);
1045 }
1046 } else
1047 printf("..... id %016" PRIx64 ", value %016" PRIx64 "\n",
1048 sample->read.one.id, sample->read.one.value);
1049}
1050
9fa8727a 1051static void dump_event(struct perf_evlist *evlist, union perf_event *event,
8d50e5b4 1052 u64 file_offset, struct perf_sample *sample)
9aefcab0
TG		 1053{
1054 if (!dump_trace)
1055 return;
1056
9486aa38
ACM		 1057 printf("\n%#" PRIx64 " [%#x]: event: %d\n",
1058 file_offset, event->header.size, event->header.type);
9aefcab0
TG		 1059
1060 trace_event(event);
1061
1062 if (sample)
9fa8727a 1063 perf_evlist__print_tstamp(evlist, event, sample);
9aefcab0 1064
9486aa38 1065 printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset,
8115d60c 1066 event->header.size, perf_event__name(event->header.type));
9aefcab0
TG		 1067}
1068
0f6a3015 1069static void dump_sample(struct perf_evsel *evsel, union perf_event *event,
8d50e5b4 1070 struct perf_sample *sample)
9aefcab0 1071{
7f3be652
ACM		 1072 u64 sample_type;
1073
ddbc24b7
ACM		 1074 if (!dump_trace)
1075 return;
1076
0ea590ae 1077 printf("(IP, 0x%x): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n",
9486aa38 1078 event->header.misc, sample->pid, sample->tid, sample->ip,
7cec0922 1079 sample->period, sample->addr);
9aefcab0 1080
0f6a3015 1081 sample_type = evsel->attr.sample_type;
7f3be652
ACM		 1082
1083 if (sample_type & PERF_SAMPLE_CALLCHAIN)
384b6055 1084 callchain__printf(evsel, sample);
b5387528 1085
acf2abbd 1086 if ((sample_type & PERF_SAMPLE_BRANCH_STACK) && !perf_evsel__has_branch_callstack(evsel))
b5387528 1087 branch_stack__printf(sample);
0f6a3015
JO		 1088
1089 if (sample_type & PERF_SAMPLE_REGS_USER)
352ea45a 1090 regs_user__printf(sample);
0f6a3015 1091
6a21c0b5
SE		 1092 if (sample_type & PERF_SAMPLE_REGS_INTR)
1093 regs_intr__printf(sample);
1094
0f6a3015
JO		 1095 if (sample_type & PERF_SAMPLE_STACK_USER)
1096 stack_user__printf(&sample->user_stack);
05484298
AK		 1097
1098 if (sample_type & PERF_SAMPLE_WEIGHT)
1099 printf("... weight: %" PRIu64 "\n", sample->weight);
98a3b32c
SE		 1100
1101 if (sample_type & PERF_SAMPLE_DATA_SRC)
1102 printf(" . data_src: 0x%"PRIx64"\n", sample->data_src);
9ede473c 1103
475eeab9
AK		 1104 if (sample_type & PERF_SAMPLE_TRANSACTION)
1105 printf("... transaction: %" PRIx64 "\n", sample->transaction);
1106
9ede473c
JO		 1107 if (sample_type & PERF_SAMPLE_READ)
1108 sample_read__printf(sample, evsel->attr.read_format);
9aefcab0
TG		 1109}
1110
54245fdc 1111static struct machine *machines__find_for_cpumode(struct machines *machines,
ef89325f
AH		 1112 union perf_event *event,
1113 struct perf_sample *sample)
743eb868 1114{
ad85ace0 1115 struct machine *machine;
743eb868 1116
7c0f4a41 1117 if (perf_guest &&
473398a2
ACM		 1118 ((sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL) ||
1119 (sample->cpumode == PERF_RECORD_MISC_GUEST_USER))) {
7fb0a5ee
ND		 1120 u32 pid;
1121
5c5e854b
SE		 1122 if (event->header.type == PERF_RECORD_MMAP
1123 || event->header.type == PERF_RECORD_MMAP2)
7fb0a5ee
ND		 1124 pid = event->mmap.pid;
1125 else
ef89325f 1126 pid = sample->pid;
7fb0a5ee 1127
54245fdc 1128 machine = machines__find(machines, pid);
ad85ace0 1129 if (!machine)
3caeaa56 1130 machine = machines__findnew(machines, DEFAULT_GUEST_KERNEL_ID);
ad85ace0 1131 return machine;
7fb0a5ee 1132 }
743eb868 1133
54245fdc 1134 return &machines->host;
743eb868
ACM		 1135}
1136
313e53b0 1137static int deliver_sample_value(struct perf_evlist *evlist,
e4caec0d
JO		 1138 struct perf_tool *tool,
1139 union perf_event *event,
1140 struct perf_sample *sample,
1141 struct sample_read_value *v,
1142 struct machine *machine)
1143{
313e53b0 1144 struct perf_sample_id *sid = perf_evlist__id2sid(evlist, v->id);
e4caec0d 1145
e4caec0d
JO		 1146 if (sid) {
1147 sample->id = v->id;
1148 sample->period = v->value - sid->period;
1149 sid->period = v->value;
1150 }
1151
1152 if (!sid || sid->evsel == NULL) {
313e53b0 1153 ++evlist->stats.nr_unknown_id;
e4caec0d
JO		 1154 return 0;
1155 }
1156
1157 return tool->sample(tool, event, sample, sid->evsel, machine);
1158}
1159
313e53b0 1160static int deliver_sample_group(struct perf_evlist *evlist,
e4caec0d
JO		 1161 struct perf_tool *tool,
1162 union perf_event *event,
1163 struct perf_sample *sample,
1164 struct machine *machine)
1165{
1166 int ret = -EINVAL;
1167 u64 i;
1168
1169 for (i = 0; i < sample->read.group.nr; i++) {
313e53b0 1170 ret = deliver_sample_value(evlist, tool, event, sample,
e4caec0d
JO		 1171 &sample->read.group.values[i],
1172 machine);
1173 if (ret)
1174 break;
1175 }
1176
1177 return ret;
1178}
1179
1180static int
313e53b0 1181 perf_evlist__deliver_sample(struct perf_evlist *evlist,
e4caec0d
JO		 1182 struct perf_tool *tool,
1183 union perf_event *event,
1184 struct perf_sample *sample,
1185 struct perf_evsel *evsel,
1186 struct machine *machine)
1187{
1188 /* We know evsel != NULL. */
1189 u64 sample_type = evsel->attr.sample_type;
1190 u64 read_format = evsel->attr.read_format;
1191
1192 /* Standard sample delievery. */
1193 if (!(sample_type & PERF_SAMPLE_READ))
1194 return tool->sample(tool, event, sample, evsel, machine);
1195
1196 /* For PERF_SAMPLE_READ we have either single or group mode. */
1197 if (read_format & PERF_FORMAT_GROUP)
313e53b0 1198 return deliver_sample_group(evlist, tool, event, sample,
e4caec0d
JO		 1199 machine);
1200 else
313e53b0 1201 return deliver_sample_value(evlist, tool, event, sample,
e4caec0d
JO		 1202 &sample->read.one, machine);
1203}
1204
d10eb1eb
ACM		 1205static int machines__deliver_event(struct machines *machines,
1206 struct perf_evlist *evlist,
1207 union perf_event *event,
1208 struct perf_sample *sample,
1209 struct perf_tool *tool, u64 file_offset)
cbf41645 1210{
9e69c210 1211 struct perf_evsel *evsel;
743eb868 1212 struct machine *machine;
9e69c210 1213
9fa8727a 1214 dump_event(evlist, event, file_offset, sample);
532e7269 1215
313e53b0 1216 evsel = perf_evlist__id2evsel(evlist, sample->id);
7b27509f 1217
fa713a4e 1218 machine = machines__find_for_cpumode(machines, event, sample);
743eb868 1219
cbf41645
TG		 1220 switch (event->header.type) {
1221 case PERF_RECORD_SAMPLE:
9e69c210 1222 if (evsel == NULL) {
313e53b0 1223 ++evlist->stats.nr_unknown_id;
6782206b 1224 return 0;
9e69c210 1225 }
1b29ac59 1226 dump_sample(evsel, event, sample);
0c095715 1227 if (machine == NULL) {
313e53b0 1228 ++evlist->stats.nr_unprocessable_samples;
6782206b 1229 return 0;
0c095715 1230 }
313e53b0 1231 return perf_evlist__deliver_sample(evlist, tool, event, sample, evsel, machine);
cbf41645 1232 case PERF_RECORD_MMAP:
45694aa7 1233 return tool->mmap(tool, event, sample, machine);
5c5e854b 1234 case PERF_RECORD_MMAP2:
930e6fcd
KL		 1235 if (event->header.misc & PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT)
1236 ++evlist->stats.nr_proc_map_timeout;
5c5e854b 1237 return tool->mmap2(tool, event, sample, machine);
cbf41645 1238 case PERF_RECORD_COMM:
45694aa7 1239 return tool->comm(tool, event, sample, machine);
cbf41645 1240 case PERF_RECORD_FORK:
45694aa7 1241 return tool->fork(tool, event, sample, machine);
cbf41645 1242 case PERF_RECORD_EXIT:
45694aa7 1243 return tool->exit(tool, event, sample, machine);
cbf41645 1244 case PERF_RECORD_LOST:
45694aa7 1245 if (tool->lost == perf_event__process_lost)
313e53b0 1246 evlist->stats.total_lost += event->lost.lost;
45694aa7 1247 return tool->lost(tool, event, sample, machine);
c4937a91
KL		 1248 case PERF_RECORD_LOST_SAMPLES:
1249 if (tool->lost_samples == perf_event__process_lost_samples)
1250 evlist->stats.total_lost_samples += event->lost_samples.lost;
1251 return tool->lost_samples(tool, event, sample, machine);
cbf41645 1252 case PERF_RECORD_READ:
45694aa7 1253 return tool->read(tool, event, sample, evsel, machine);
cbf41645 1254 case PERF_RECORD_THROTTLE:
45694aa7 1255 return tool->throttle(tool, event, sample, machine);
cbf41645 1256 case PERF_RECORD_UNTHROTTLE:
45694aa7 1257 return tool->unthrottle(tool, event, sample, machine);
4a96f7a0 1258 case PERF_RECORD_AUX:
a38f48e3
AH		 1259 if (tool->aux == perf_event__process_aux &&
1260 (event->aux.flags & PERF_AUX_FLAG_TRUNCATED))
1261 evlist->stats.total_aux_lost += 1;
4a96f7a0 1262 return tool->aux(tool, event, sample, machine);
0ad21f68
AH		 1263 case PERF_RECORD_ITRACE_START:
1264 return tool->itrace_start(tool, event, sample, machine);
0286039f
AH		 1265 case PERF_RECORD_SWITCH:
1266 case PERF_RECORD_SWITCH_CPU_WIDE:
1267 return tool->context_switch(tool, event, sample, machine);
cbf41645 1268 default:
313e53b0 1269 ++evlist->stats.nr_unknown_events;
cbf41645
TG		 1270 return -1;
1271 }
1272}
1273
c446870d
AH		 1274static int perf_session__deliver_event(struct perf_session *session,
1275 union perf_event *event,
1276 struct perf_sample *sample,
1277 struct perf_tool *tool,
1278 u64 file_offset)
1279{
1280 int ret;
1281
1282 ret = auxtrace__process_event(session, event, sample, tool);
1283 if (ret < 0)
1284 return ret;
1285 if (ret > 0)
1286 return 0;
1287
1288 return machines__deliver_event(&session->machines, session->evlist,
1289 event, sample, tool, file_offset);
1290}
1291
d5652d86
AH		 1292static s64 perf_session__process_user_event(struct perf_session *session,
1293 union perf_event *event,
d5652d86 1294 u64 file_offset)
06aae590 1295{
d704ebda 1296 struct ordered_events *oe = &session->ordered_events;
9870d780 1297 struct perf_tool *tool = session->tool;
cc9784bd 1298 int fd = perf_data_file__fd(session->file);
10d0f086
ACM		 1299 int err;
1300
9fa8727a 1301 dump_event(session->evlist, event, file_offset, NULL);
06aae590 1302
cbf41645 1303 /* These events are processed right away */
06aae590 1304 switch (event->header.type) {
2c46dbb5 1305 case PERF_RECORD_HEADER_ATTR:
47c3d109 1306 err = tool->attr(tool, event, &session->evlist);
cfe1c414 1307 if (err == 0) {
7b56cce2 1308 perf_session__set_id_hdr_size(session);
cfe1c414
AH		 1309 perf_session__set_comm_exec(session);
1310 }
10d0f086 1311 return err;
ffe77725
JO		 1312 case PERF_RECORD_EVENT_UPDATE:
1313 return tool->event_update(tool, event, &session->evlist);
f67697bd
JO		 1314 case PERF_RECORD_HEADER_EVENT_TYPE:
1315 /*
1316 * Depreceated, but we need to handle it for sake
1317 * of old data files create in pipe mode.
1318 */
1319 return 0;
9215545e
TZ		 1320 case PERF_RECORD_HEADER_TRACING_DATA:
1321 /* setup for reading amidst mmap */
cc9784bd 1322 lseek(fd, file_offset, SEEK_SET);
47c3d109 1323 return tool->tracing_data(tool, event, session);
c7929e47 1324 case PERF_RECORD_HEADER_BUILD_ID:
45694aa7 1325 return tool->build_id(tool, event, session);
d6b17beb 1326 case PERF_RECORD_FINISHED_ROUND:
d704ebda 1327 return tool->finished_round(tool, event, oe);
3c659eed
AH		 1328 case PERF_RECORD_ID_INDEX:
1329 return tool->id_index(tool, event, session);
a16ac023
AH		 1330 case PERF_RECORD_AUXTRACE_INFO:
1331 return tool->auxtrace_info(tool, event, session);
1332 case PERF_RECORD_AUXTRACE:
1333 /* setup for reading amidst mmap */
1334 lseek(fd, file_offset + event->header.size, SEEK_SET);
1335 return tool->auxtrace(tool, event, session);
e9bf54d2 1336 case PERF_RECORD_AUXTRACE_ERROR:
85ed4729 1337 perf_session__auxtrace_error_inc(session, event);
e9bf54d2 1338 return tool->auxtrace_error(tool, event, session);
5f3339d2
JO		 1339 case PERF_RECORD_THREAD_MAP:
1340 return tool->thread_map(tool, event, session);
6640b6c2
JO		 1341 case PERF_RECORD_CPU_MAP:
1342 return tool->cpu_map(tool, event, session);
374fb9e3
JO		 1343 case PERF_RECORD_STAT_CONFIG:
1344 return tool->stat_config(tool, event, session);
d80518c9
JO		 1345 case PERF_RECORD_STAT:
1346 return tool->stat(tool, event, session);
2d8f0f18
JO		 1347 case PERF_RECORD_STAT_ROUND:
1348 return tool->stat_round(tool, event, session);
46bc29b9
AH		 1349 case PERF_RECORD_TIME_CONV:
1350 session->time_conv = event->time_conv;
1351 return tool->time_conv(tool, event, session);
06aae590 1352 default:
ba74f064 1353 return -EINVAL;
06aae590 1354 }
ba74f064
TG		 1355}
1356
a293829d
AH		 1357int perf_session__deliver_synth_event(struct perf_session *session,
1358 union perf_event *event,
b7b61cbe 1359 struct perf_sample *sample)
a293829d 1360{
fa713a4e 1361 struct perf_evlist *evlist = session->evlist;
9870d780 1362 struct perf_tool *tool = session->tool;
fa713a4e
ACM		 1363
1364 events_stats__inc(&evlist->stats, event->header.type);
a293829d
AH		 1365
1366 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
b7b61cbe 1367 return perf_session__process_user_event(session, event, 0);
a293829d 1368
fa713a4e 1369 return machines__deliver_event(&session->machines, evlist, event, sample, tool, 0);
a293829d
AH		 1370}
1371
268fb20f
JO		 1372static void event_swap(union perf_event *event, bool sample_id_all)
1373{
1374 perf_event__swap_op swap;
1375
1376 swap = perf_event__swap_ops[event->header.type];
1377 if (swap)
1378 swap(event, sample_id_all);
1379}
1380
5a52f33a
AH		 1381int perf_session__peek_event(struct perf_session *session, off_t file_offset,
1382 void *buf, size_t buf_sz,
1383 union perf_event **event_ptr,
1384 struct perf_sample *sample)
1385{
1386 union perf_event *event;
1387 size_t hdr_sz, rest;
1388 int fd;
1389
1390 if (session->one_mmap && !session->header.needs_swap) {
1391 event = file_offset - session->one_mmap_offset +
1392 session->one_mmap_addr;
1393 goto out_parse_sample;
1394 }
1395
1396 if (perf_data_file__is_pipe(session->file))
1397 return -1;
1398
1399 fd = perf_data_file__fd(session->file);
1400 hdr_sz = sizeof(struct perf_event_header);
1401
1402 if (buf_sz < hdr_sz)
1403 return -1;
1404
1405 if (lseek(fd, file_offset, SEEK_SET) == (off_t)-1 ||
554e92ed 1406 readn(fd, buf, hdr_sz) != (ssize_t)hdr_sz)
5a52f33a
AH		 1407 return -1;
1408
1409 event = (union perf_event *)buf;
1410
1411 if (session->header.needs_swap)
1412 perf_event_header__bswap(&event->header);
1413
554e92ed 1414 if (event->header.size < hdr_sz || event->header.size > buf_sz)
5a52f33a
AH		 1415 return -1;
1416
1417 rest = event->header.size - hdr_sz;
1418
554e92ed 1419 if (readn(fd, buf, rest) != (ssize_t)rest)
5a52f33a
AH		 1420 return -1;
1421
1422 if (session->header.needs_swap)
1423 event_swap(event, perf_evlist__sample_id_all(session->evlist));
1424
1425out_parse_sample:
1426
1427 if (sample && event->header.type < PERF_RECORD_USER_TYPE_START &&
1428 perf_evlist__parse_sample(session->evlist, event, sample))
1429 return -1;
1430
1431 *event_ptr = event;
1432
1433 return 0;
1434}
1435
d5652d86 1436static s64 perf_session__process_event(struct perf_session *session,
b7b61cbe 1437 union perf_event *event, u64 file_offset)
ba74f064 1438{
313e53b0 1439 struct perf_evlist *evlist = session->evlist;
9870d780 1440 struct perf_tool *tool = session->tool;
8d50e5b4 1441 struct perf_sample sample;
ba74f064
TG		 1442 int ret;
1443
268fb20f 1444 if (session->header.needs_swap)
313e53b0 1445 event_swap(event, perf_evlist__sample_id_all(evlist));
ba74f064
TG		 1446
1447 if (event->header.type >= PERF_RECORD_HEADER_MAX)
1448 return -EINVAL;
1449
313e53b0 1450 events_stats__inc(&evlist->stats, event->header.type);
ba74f064
TG		 1451
1452 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
b7b61cbe 1453 return perf_session__process_user_event(session, event, file_offset);
cbf41645 1454
3dfc2c0a
TG		 1455 /*
1456 * For all kernel events we get the sample data
1457 */
313e53b0 1458 ret = perf_evlist__parse_sample(evlist, event, &sample);
5538beca
FW		 1459 if (ret)
1460 return ret;
3dfc2c0a 1461
0a8cb85c 1462 if (tool->ordered_events) {
b7b61cbe 1463 ret = perf_session__queue_event(session, event, &sample, file_offset);
cbf41645
TG		 1464 if (ret != -ETIME)
1465 return ret;
1466 }
1467
c446870d
AH		 1468 return perf_session__deliver_event(session, event, &sample, tool,
1469 file_offset);
06aae590
ACM		 1470}
1471
316c7136 1472void perf_event_header__bswap(struct perf_event_header *hdr)
ba21594c 1473{
316c7136
ACM		 1474 hdr->type = bswap_32(hdr->type);
1475 hdr->misc = bswap_16(hdr->misc);
1476 hdr->size = bswap_16(hdr->size);
ba21594c
ACM		 1477}
1478
b424eba2
ACM		 1479struct thread *perf_session__findnew(struct perf_session *session, pid_t pid)
1480{
1fcb8768 1481 return machine__findnew_thread(&session->machines.host, -1, pid);
b424eba2
ACM		 1482}
1483
9d8b172f 1484int perf_session__register_idle_thread(struct perf_session *session)
06aae590 1485{
1fcb8768 1486 struct thread *thread;
9d8b172f 1487 int err = 0;
06aae590 1488
1fcb8768 1489 thread = machine__findnew_thread(&session->machines.host, 0, 0);
162f0bef 1490 if (thread == NULL || thread__set_comm(thread, "swapper", 0)) {
06aae590 1491 pr_err("problem inserting idle task.\n");
9d8b172f 1492 err = -1;
06aae590
ACM		 1493 }
1494
9d8b172f
MH		 1495 /* machine__findnew_thread() got the thread, so put it */
1496 thread__put(thread);
1497 return err;
06aae590
ACM		 1498}
1499
9870d780 1500static void perf_session__warn_about_errors(const struct perf_session *session)
11095994 1501{
9870d780
ACM		 1502 const struct events_stats *stats = &session->evlist->stats;
1503 const struct ordered_events *oe = &session->ordered_events;
1504
1505 if (session->tool->lost == perf_event__process_lost &&
ccda068f 1506 stats->nr_events[PERF_RECORD_LOST] != 0) {
7b27509f
ACM		 1507 ui__warning("Processed %d events and lost %d chunks!\n\n"
1508 "Check IO/CPU overload!\n\n",
ccda068f
ACM		 1509 stats->nr_events[0],
1510 stats->nr_events[PERF_RECORD_LOST]);
11095994
ACM		 1511 }
1512
c4937a91
KL		 1513 if (session->tool->lost_samples == perf_event__process_lost_samples) {
1514 double drop_rate;
1515
1516 drop_rate = (double)stats->total_lost_samples /
1517 (double) (stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples);
1518 if (drop_rate > 0.05) {
6ba29c2f 1519 ui__warning("Processed %" PRIu64 " samples and lost %3.2f%% samples!\n\n",
c4937a91
KL		 1520 stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples,
1521 drop_rate * 100.0);
1522 }
1523 }
1524
a38f48e3
AH		 1525 if (session->tool->aux == perf_event__process_aux &&
1526 stats->total_aux_lost != 0) {
1527 ui__warning("AUX data lost %" PRIu64 " times out of %u!\n\n",
1528 stats->total_aux_lost,
1529 stats->nr_events[PERF_RECORD_AUX]);
1530 }
1531
ccda068f 1532 if (stats->nr_unknown_events != 0) {
11095994
ACM		 1533 ui__warning("Found %u unknown events!\n\n"
1534 "Is this an older tool processing a perf.data "
1535 "file generated by a more recent tool?\n\n"
1536 "If that is not the case, consider "
1537 "reporting to linux-kernel@vger.kernel.org.\n\n",
ccda068f 1538 stats->nr_unknown_events);
11095994
ACM		 1539 }
1540
ccda068f 1541 if (stats->nr_unknown_id != 0) {
9e69c210 1542 ui__warning("%u samples with id not present in the header\n",
ccda068f 1543 stats->nr_unknown_id);
9e69c210
ACM		 1544 }
1545
ccda068f 1546 if (stats->nr_invalid_chains != 0) {
75be989a
ACM		 1547 ui__warning("Found invalid callchains!\n\n"
1548 "%u out of %u events were discarded for this reason.\n\n"
1549 "Consider reporting to linux-kernel@vger.kernel.org.\n\n",
ccda068f
ACM		 1550 stats->nr_invalid_chains,
1551 stats->nr_events[PERF_RECORD_SAMPLE]);
75be989a 1552 }
0c095715 1553
ccda068f 1554 if (stats->nr_unprocessable_samples != 0) {
0c095715
JR		 1555 ui__warning("%u unprocessable samples recorded.\n"
1556 "Do you have a KVM guest running and not using 'perf kvm'?\n",
ccda068f 1557 stats->nr_unprocessable_samples);
0c095715 1558 }
f61ff6c0 1559
9870d780
ACM		 1560 if (oe->nr_unordered_events != 0)
1561 ui__warning("%u out of order events recorded.\n", oe->nr_unordered_events);
85ed4729
AH		 1562
1563 events_stats__auxtrace_error_warn(stats);
930e6fcd
KL		 1564
1565 if (stats->nr_proc_map_timeout != 0) {
1566 ui__warning("%d map information files for pre-existing threads were\n"
1567 "not processed, if there are samples for addresses they\n"
1568 "will not be resolved, you may find out which are these\n"
1569 "threads by running with -v and redirecting the output\n"
9d9cad76
KL		 1570 "to a file.\n"
1571 "The time limit to process proc map is too short?\n"
1572 "Increase it by --proc-map-timeout\n",
930e6fcd
KL		 1573 stats->nr_proc_map_timeout);
1574 }
11095994
ACM		 1575}
1576
a5499b37
AH		 1577static int perf_session__flush_thread_stack(struct thread *thread,
1578 void *p __maybe_unused)
1579{
1580 return thread_stack__flush(thread);
1581}
1582
1583static int perf_session__flush_thread_stacks(struct perf_session *session)
1584{
1585 return machines__for_each_thread(&session->machines,
1586 perf_session__flush_thread_stack,
1587 NULL);
1588}
1589
8dc58101
TZ		 1590volatile int session_done;
1591
b7b61cbe 1592static int __perf_session__process_pipe_events(struct perf_session *session)
8dc58101 1593{
fa713a4e 1594 struct ordered_events *oe = &session->ordered_events;
9870d780 1595 struct perf_tool *tool = session->tool;
316c7136 1596 int fd = perf_data_file__fd(session->file);
444d2866
SE		 1597 union perf_event *event;
1598 uint32_t size, cur_size = 0;
1599 void *buf = NULL;
d5652d86 1600 s64 skip = 0;
8dc58101 1601 u64 head;
727ebd54 1602 ssize_t err;
8dc58101
TZ		 1603 void *p;
1604
45694aa7 1605 perf_tool__fill_defaults(tool);
8dc58101
TZ		 1606
1607 head = 0;
444d2866
SE		 1608 cur_size = sizeof(union perf_event);
1609
1610 buf = malloc(cur_size);
1611 if (!buf)
1612 return -errno;
8dc58101 1613more:
444d2866 1614 event = buf;
cc9784bd 1615 err = readn(fd, event, sizeof(struct perf_event_header));
8dc58101
TZ		 1616 if (err <= 0) {
1617 if (err == 0)
1618 goto done;
1619
1620 pr_err("failed to read event header\n");
1621 goto out_err;
1622 }
1623
316c7136 1624 if (session->header.needs_swap)
444d2866 1625 perf_event_header__bswap(&event->header);
8dc58101 1626
444d2866 1627 size = event->header.size;
27389d78
AH		 1628 if (size < sizeof(struct perf_event_header)) {
1629 pr_err("bad event header size\n");
1630 goto out_err;
1631 }
8dc58101 1632
444d2866
SE		 1633 if (size > cur_size) {
1634 void *new = realloc(buf, size);
1635 if (!new) {
1636 pr_err("failed to allocate memory to read event\n");
1637 goto out_err;
1638 }
1639 buf = new;
1640 cur_size = size;
1641 event = buf;
1642 }
1643 p = event;
8dc58101
TZ		 1644 p += sizeof(struct perf_event_header);
1645
794e43b5 1646 if (size - sizeof(struct perf_event_header)) {
cc9784bd 1647 err = readn(fd, p, size - sizeof(struct perf_event_header));
794e43b5
TZ		 1648 if (err <= 0) {
1649 if (err == 0) {
1650 pr_err("unexpected end of event stream\n");
1651 goto done;
1652 }
8dc58101 1653
794e43b5
TZ		 1654 pr_err("failed to read event data\n");
1655 goto out_err;
1656 }
8dc58101
TZ		 1657 }
1658
b7b61cbe 1659 if ((skip = perf_session__process_event(session, event, head)) < 0) {
9389a460 1660 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
444d2866 1661 head, event->header.size, event->header.type);
9389a460
JO		 1662 err = -EINVAL;
1663 goto out_err;
8dc58101
TZ		 1664 }
1665
1666 head += size;
1667
8dc58101
TZ		 1668 if (skip > 0)
1669 head += skip;
1670
1671 if (!session_done())
1672 goto more;
1673done:
8c16b649 1674 /* do the final flush for ordered samples */
b7b61cbe 1675 err = ordered_events__flush(oe, OE_FLUSH__FINAL);
c446870d
AH		 1676 if (err)
1677 goto out_err;
1678 err = auxtrace__flush_events(session, tool);
a5499b37
AH		 1679 if (err)
1680 goto out_err;
1681 err = perf_session__flush_thread_stacks(session);
8dc58101 1682out_err:
444d2866 1683 free(buf);
9870d780 1684 perf_session__warn_about_errors(session);
adc56ed1 1685 ordered_events__free(&session->ordered_events);
c446870d 1686 auxtrace__free_events(session);
8dc58101
TZ		 1687 return err;
1688}
1689
998bedc8
FW		 1690static union perf_event *
1691fetch_mmaped_event(struct perf_session *session,
1692 u64 head, size_t mmap_size, char *buf)
1693{
1694 union perf_event *event;
1695
1696 /*
1697 * Ensure we have enough space remaining to read
1698 * the size of the event in the headers.
1699 */
1700 if (head + sizeof(event->header) > mmap_size)
1701 return NULL;
1702
1703 event = (union perf_event *)(buf + head);
1704
1705 if (session->header.needs_swap)
1706 perf_event_header__bswap(&event->header);
1707
27389d78
AH		 1708 if (head + event->header.size > mmap_size) {
1709 /* We're not fetching the event so swap back again */
1710 if (session->header.needs_swap)
1711 perf_event_header__bswap(&event->header);
998bedc8 1712 return NULL;
27389d78 1713 }
998bedc8
FW		 1714
1715 return event;
1716}
1717
35d48ddf
DM		 1718/*
1719 * On 64bit we can mmap the data file in one go. No need for tiny mmap
1720 * slices. On 32bit we use 32MB.
1721 */
1722#if BITS_PER_LONG == 64
1723#define MMAP_SIZE ULLONG_MAX
1724#define NUM_MMAPS 1
1725#else
1726#define MMAP_SIZE (32 * 1024 * 1024ULL)
1727#define NUM_MMAPS 128
1728#endif
1729
4ac30cf7
NK		 1730static int __perf_session__process_events(struct perf_session *session,
1731 u64 data_offset, u64 data_size,
b7b61cbe 1732 u64 file_size)
06aae590 1733{
fa713a4e 1734 struct ordered_events *oe = &session->ordered_events;
9870d780 1735 struct perf_tool *tool = session->tool;
cc9784bd 1736 int fd = perf_data_file__fd(session->file);
d5652d86 1737 u64 head, page_offset, file_offset, file_pos, size;
fe174207 1738 int err, mmap_prot, mmap_flags, map_idx = 0;
0c1fe6b2 1739 size_t mmap_size;
35d48ddf 1740 char *buf, *mmaps[NUM_MMAPS];
8115d60c 1741 union perf_event *event;
4d3001fd 1742 struct ui_progress prog;
d5652d86 1743 s64 skip;
0331ee0c 1744
45694aa7 1745 perf_tool__fill_defaults(tool);
06aae590 1746
0331ee0c
TG		 1747 page_offset = page_size * (data_offset / page_size);
1748 file_offset = page_offset;
1749 head = data_offset - page_offset;
06aae590 1750
381c02f6
MR		 1751 if (data_size == 0)
1752 goto out;
1753
1754 if (data_offset + data_size < file_size)
d6513281
TG		 1755 file_size = data_offset + data_size;
1756
4d3001fd 1757 ui_progress__init(&prog, file_size, "Processing events...");
55b44629 1758
35d48ddf 1759 mmap_size = MMAP_SIZE;
919d86d3 1760 if (mmap_size > file_size) {
55b44629 1761 mmap_size = file_size;
919d86d3
AH		 1762 session->one_mmap = true;
1763 }
55b44629 1764
fe174207
TG		 1765 memset(mmaps, 0, sizeof(mmaps));
1766
ba21594c
ACM		 1767 mmap_prot = PROT_READ;
1768 mmap_flags = MAP_SHARED;
1769
0331ee0c 1770 if (session->header.needs_swap) {
ba21594c
ACM		 1771 mmap_prot |= PROT_WRITE;
1772 mmap_flags = MAP_PRIVATE;
1773 }
06aae590 1774remap:
cc9784bd 1775 buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, fd,
55b44629 1776 file_offset);
06aae590
ACM		 1777 if (buf == MAP_FAILED) {
1778 pr_err("failed to mmap file\n");
1779 err = -errno;
1780 goto out_err;
1781 }
fe174207
TG		 1782 mmaps[map_idx] = buf;
1783 map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1);
d6513281 1784 file_pos = file_offset + head;
919d86d3
AH		 1785 if (session->one_mmap) {
1786 session->one_mmap_addr = buf;
1787 session->one_mmap_offset = file_offset;
1788 }
06aae590
ACM		 1789
1790more:
998bedc8
FW		 1791 event = fetch_mmaped_event(session, head, mmap_size, buf);
1792 if (!event) {
fe174207
TG		 1793 if (mmaps[map_idx]) {
1794 munmap(mmaps[map_idx], mmap_size);
1795 mmaps[map_idx] = NULL;
1796 }
06aae590 1797
0331ee0c
TG		 1798 page_offset = page_size * (head / page_size);
1799 file_offset += page_offset;
1800 head -= page_offset;
06aae590
ACM		 1801 goto remap;
1802 }
1803
1804 size = event->header.size;
1805
27389d78 1806 if (size < sizeof(struct perf_event_header) ||
b7b61cbe 1807 (skip = perf_session__process_event(session, event, file_pos)) < 0) {
9389a460
JO		 1808 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
1809 file_offset + head, event->header.size,
1810 event->header.type);
1811 err = -EINVAL;
1812 goto out_err;
06aae590
ACM		 1813 }
1814
6f917c70
AH		 1815 if (skip)
1816 size += skip;
1817
06aae590 1818 head += size;
d6513281 1819 file_pos += size;
06aae590 1820
4d3001fd 1821 ui_progress__update(&prog, size);
55b44629 1822
33e940a2 1823 if (session_done())
8c16b649 1824 goto out;
33e940a2 1825
d6513281 1826 if (file_pos < file_size)
06aae590 1827 goto more;
d6513281 1828
8c16b649 1829out:
c61e52ee 1830 /* do the final flush for ordered samples */
b7b61cbe 1831 err = ordered_events__flush(oe, OE_FLUSH__FINAL);
c446870d
AH		 1832 if (err)
1833 goto out_err;
1834 err = auxtrace__flush_events(session, tool);
a5499b37
AH		 1835 if (err)
1836 goto out_err;
1837 err = perf_session__flush_thread_stacks(session);
06aae590 1838out_err:
a5580f3e 1839 ui_progress__finish();
9870d780 1840 perf_session__warn_about_errors(session);
b26dc730
WN		 1841 /*
1842 * We may switching perf.data output, make ordered_events
1843 * reusable.
1844 */
1845 ordered_events__reinit(&session->ordered_events);
c446870d 1846 auxtrace__free_events(session);
919d86d3 1847 session->one_mmap = false;
06aae590
ACM		 1848 return err;
1849}
27295592 1850
b7b61cbe 1851int perf_session__process_events(struct perf_session *session)
6122e4e4 1852{
316c7136 1853 u64 size = perf_data_file__size(session->file);
6122e4e4
ACM		 1854 int err;
1855
9d8b172f 1856 if (perf_session__register_idle_thread(session) < 0)
6122e4e4
ACM		 1857 return -ENOMEM;
1858
316c7136
ACM		 1859 if (!perf_data_file__is_pipe(session->file))
1860 err = __perf_session__process_events(session,
1861 session->header.data_offset,
b7b61cbe 1862 session->header.data_size, size);
8dc58101 1863 else
b7b61cbe 1864 err = __perf_session__process_pipe_events(session);
88ca895d 1865
6122e4e4
ACM		 1866 return err;
1867}
1868
7f3be652 1869bool perf_session__has_traces(struct perf_session *session, const char *msg)
27295592 1870{
93ea01c2
DA		 1871 struct perf_evsel *evsel;
1872
0050f7aa 1873 evlist__for_each(session->evlist, evsel) {
93ea01c2
DA		 1874 if (evsel->attr.type == PERF_TYPE_TRACEPOINT)
1875 return true;
27295592
ACM		 1876 }
1877
93ea01c2
DA		 1878 pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg);
1879 return false;
27295592 1880}
56b03f3c 1881
743eb868
ACM		 1882int maps__set_kallsyms_ref_reloc_sym(struct map **maps,
1883 const char *symbol_name, u64 addr)
56b03f3c
ACM		 1884{
1885 char *bracket;
9de89fe7 1886 enum map_type i;
a1645ce1
ZY		 1887 struct ref_reloc_sym *ref;
1888
1889 ref = zalloc(sizeof(struct ref_reloc_sym));
1890 if (ref == NULL)
1891 return -ENOMEM;
56b03f3c 1892
a1645ce1
ZY		 1893 ref->name = strdup(symbol_name);
1894 if (ref->name == NULL) {
1895 free(ref);
56b03f3c 1896 return -ENOMEM;
a1645ce1 1897 }
56b03f3c 1898
a1645ce1 1899 bracket = strchr(ref->name, ']');
56b03f3c
ACM		 1900 if (bracket)
1901 *bracket = '\0';
1902
a1645ce1 1903 ref->addr = addr;
9de89fe7
ACM		 1904
1905 for (i = 0; i < MAP__NR_TYPES; ++i) {
a1645ce1 1906 struct kmap *kmap = map__kmap(maps[i]);
ba92732e
WN		 1907
1908 if (!kmap)
1909 continue;
a1645ce1 1910 kmap->ref_reloc_sym = ref;
9de89fe7
ACM		 1911 }
1912
56b03f3c
ACM		 1913 return 0;
1914}
1f626bc3 1915
316c7136 1916size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp)
1f626bc3 1917{
316c7136 1918 return machines__fprintf_dsos(&session->machines, fp);
1f626bc3 1919}
f869097e 1920
316c7136 1921size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp,
417c2ff6 1922 bool (skip)(struct dso *dso, int parm), int parm)
f869097e 1923{
316c7136 1924 return machines__fprintf_dsos_buildid(&session->machines, fp, skip, parm);
f869097e 1925}
e248de33
ACM		 1926
1927size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp)
1928{
c446870d
AH		 1929 size_t ret;
1930 const char *msg = "";
1931
1932 if (perf_header__has_feat(&session->header, HEADER_AUXTRACE))
1933 msg = " (excludes AUX area (e.g. instruction trace) decoded / synthesized events)";
1934
fe692ac8 1935 ret = fprintf(fp, "\nAggregated stats:%s\n", msg);
e248de33 1936
75be989a 1937 ret += events_stats__fprintf(&session->evlist->stats, fp);
e248de33
ACM		 1938 return ret;
1939}
c0230b2b 1940
b424eba2
ACM		 1941size_t perf_session__fprintf(struct perf_session *session, FILE *fp)
1942{
1943 /*
1944 * FIXME: Here we have to actually print all the machines in this
1945 * session, not just the host...
1946 */
876650e6 1947 return machine__fprintf(&session->machines.host, fp);
b424eba2
ACM		 1948}
1949
9cbdb702
DA		 1950struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session,
1951 unsigned int type)
1952{
1953 struct perf_evsel *pos;
1954
0050f7aa 1955 evlist__for_each(session->evlist, pos) {
9cbdb702
DA		 1956 if (pos->attr.type == type)
1957 return pos;
1958 }
1959 return NULL;
1960}
1961
5d67be97
AB		 1962int perf_session__cpu_bitmap(struct perf_session *session,
1963 const char *cpu_list, unsigned long *cpu_bitmap)
1964{
8bac41cb 1965 int i, err = -1;
5d67be97
AB		 1966 struct cpu_map *map;
1967
1968 for (i = 0; i < PERF_TYPE_MAX; ++i) {
1969 struct perf_evsel *evsel;
1970
1971 evsel = perf_session__find_first_evtype(session, i);
1972 if (!evsel)
1973 continue;
1974
1975 if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) {
1976 pr_err("File does not contain CPU events. "
1977 "Remove -c option to proceed.\n");
1978 return -1;
1979 }
1980 }
1981
1982 map = cpu_map__new(cpu_list);
47fbe53b
DA		 1983 if (map == NULL) {
1984 pr_err("Invalid cpu_list\n");
1985 return -1;
1986 }
5d67be97
AB		 1987
1988 for (i = 0; i < map->nr; i++) {
1989 int cpu = map->map[i];
1990
1991 if (cpu >= MAX_NR_CPUS) {
1992 pr_err("Requested CPU %d too large. "
1993 "Consider raising MAX_NR_CPUS\n", cpu);
8bac41cb 1994 goto out_delete_map;
5d67be97
AB		 1995 }
1996
1997 set_bit(cpu, cpu_bitmap);
1998 }
1999
8bac41cb
SF		 2000 err = 0;
2001
2002out_delete_map:
f30a79b0 2003 cpu_map__put(map);
8bac41cb 2004 return err;
5d67be97 2005}
fbe96f29
SE		 2006
2007void perf_session__fprintf_info(struct perf_session *session, FILE *fp,
2008 bool full)
2009{
2010 struct stat st;
c5765ece 2011 int fd, ret;
fbe96f29
SE		 2012
2013 if (session == NULL || fp == NULL)
2014 return;
2015
c5765ece
MI		 2016 fd = perf_data_file__fd(session->file);
2017
cc9784bd 2018 ret = fstat(fd, &st);
fbe96f29
SE		 2019 if (ret == -1)
2020 return;
2021
2022 fprintf(fp, "# ========\n");
2023 fprintf(fp, "# captured on: %s", ctime(&st.st_ctime));
2024 perf_header__fprintf_info(session, fp, full);
2025 fprintf(fp, "# ========\n#\n");
2026}
da378962
ACM		 2027
2028
2029int __perf_session__set_tracepoints_handlers(struct perf_session *session,
2030 const struct perf_evsel_str_handler *assocs,
2031 size_t nr_assocs)
2032{
da378962 2033 struct perf_evsel *evsel;
da378962
ACM		 2034 size_t i;
2035 int err;
2036
2037 for (i = 0; i < nr_assocs; i++) {
ccf53eac
ACM		 2038 /*
2039 * Adding a handler for an event not in the session,
2040 * just ignore it.
2041 */
2042 evsel = perf_evlist__find_tracepoint_by_name(session->evlist, assocs[i].name);
da378962 2043 if (evsel == NULL)
ccf53eac 2044 continue;
da378962
ACM		 2045
2046 err = -EEXIST;
744a9719 2047 if (evsel->handler != NULL)
ccf53eac 2048 goto out;
744a9719 2049 evsel->handler = assocs[i].handler;
da378962
ACM		 2050 }
2051
2052 err = 0;
2053out:
2054 return err;
da378962 2055}
3c659eed
AH		 2056
2057int perf_event__process_id_index(struct perf_tool *tool __maybe_unused,
2058 union perf_event *event,
2059 struct perf_session *session)
2060{
2061 struct perf_evlist *evlist = session->evlist;
2062 struct id_index_event *ie = &event->id_index;
2063 size_t i, nr, max_nr;
2064
2065 max_nr = (ie->header.size - sizeof(struct id_index_event)) /
2066 sizeof(struct id_index_entry);
2067 nr = ie->nr;
2068 if (nr > max_nr)
2069 return -EINVAL;
2070
2071 if (dump_trace)
2072 fprintf(stdout, " nr: %zu\n", nr);
2073
2074 for (i = 0; i < nr; i++) {
2075 struct id_index_entry *e = &ie->entries[i];
2076 struct perf_sample_id *sid;
2077
2078 if (dump_trace) {
2079 fprintf(stdout, " ... id: %"PRIu64, e->id);
2080 fprintf(stdout, " idx: %"PRIu64, e->idx);
2081 fprintf(stdout, " cpu: %"PRId64, e->cpu);
2082 fprintf(stdout, " tid: %"PRId64"\n", e->tid);
2083 }
2084
2085 sid = perf_evlist__id2sid(evlist, e->id);
2086 if (!sid)
2087 return -ENOENT;
2088 sid->idx = e->idx;
2089 sid->cpu = e->cpu;
2090 sid->tid = e->tid;
2091 }
2092 return 0;
2093}
2094
2095int perf_event__synthesize_id_index(struct perf_tool *tool,
2096 perf_event__handler_t process,
2097 struct perf_evlist *evlist,
2098 struct machine *machine)
2099{
2100 union perf_event *ev;
2101 struct perf_evsel *evsel;
2102 size_t nr = 0, i = 0, sz, max_nr, n;
2103 int err;
2104
2105 pr_debug2("Synthesizing id index\n");
2106
2107 max_nr = (UINT16_MAX - sizeof(struct id_index_event)) /
2108 sizeof(struct id_index_entry);
2109
cba9b847 2110 evlist__for_each(evlist, evsel)
3c659eed
AH		 2111 nr += evsel->ids;
2112
2113 n = nr > max_nr ? max_nr : nr;
2114 sz = sizeof(struct id_index_event) + n * sizeof(struct id_index_entry);
2115 ev = zalloc(sz);
2116 if (!ev)
2117 return -ENOMEM;
2118
2119 ev->id_index.header.type = PERF_RECORD_ID_INDEX;
2120 ev->id_index.header.size = sz;
2121 ev->id_index.nr = n;
2122
cba9b847 2123 evlist__for_each(evlist, evsel) {
3c659eed
AH		 2124 u32 j;
2125
2126 for (j = 0; j < evsel->ids; j++) {
2127 struct id_index_entry *e;
2128 struct perf_sample_id *sid;
2129
2130 if (i >= n) {
2131 err = process(tool, ev, NULL, machine);
2132 if (err)
2133 goto out_err;
2134 nr -= n;
2135 i = 0;
2136 }
2137
2138 e = &ev->id_index.entries[i++];
2139
2140 e->id = evsel->id[j];
2141
2142 sid = perf_evlist__id2sid(evlist, e->id);
2143 if (!sid) {
2144 free(ev);
2145 return -ENOENT;
2146 }
2147
2148 e->idx = sid->idx;
2149 e->cpu = sid->cpu;
2150 e->tid = sid->tid;
2151 }
2152 }
2153
2154 sz = sizeof(struct id_index_event) + nr * sizeof(struct id_index_entry);
2155 ev->id_index.header.size = sz;
2156 ev->id_index.nr = nr;
2157
2158 err = process(tool, ev, NULL, machine);
2159out_err:
2160 free(ev);
2161
2162 return err;
2163}
Linux kernel - Deliverables
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