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perf tests: Forward the perf_sample in the dwarf unwind test
[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;
06aae590 412}
48000a1a 413
268fb20f
JO		 414static void swap_sample_id_all(union perf_event *event, void *data)
415{
416 void *end = (void *) event + event->header.size;
417 int size = end - data;
418
419 BUG_ON(size % sizeof(u64));
420 mem_bswap_64(data, size);
421}
422
423static void perf_event__all64_swap(union perf_event *event,
1d037ca1 424 bool sample_id_all __maybe_unused)
ba21594c 425{
8115d60c
ACM		 426 struct perf_event_header *hdr = &event->header;
427 mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr));
ba21594c
ACM		 428}
429
268fb20f 430static void perf_event__comm_swap(union perf_event *event, bool sample_id_all)
ba21594c 431{
8115d60c
ACM		 432 event->comm.pid = bswap_32(event->comm.pid);
433 event->comm.tid = bswap_32(event->comm.tid);
268fb20f
JO		 434
435 if (sample_id_all) {
436 void *data = &event->comm.comm;
437
9ac3e487 438 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
268fb20f
JO		 439 swap_sample_id_all(event, data);
440 }
ba21594c
ACM		 441}
442
268fb20f
JO		 443static void perf_event__mmap_swap(union perf_event *event,
444 bool sample_id_all)
ba21594c 445{
8115d60c
ACM		 446 event->mmap.pid = bswap_32(event->mmap.pid);
447 event->mmap.tid = bswap_32(event->mmap.tid);
448 event->mmap.start = bswap_64(event->mmap.start);
449 event->mmap.len = bswap_64(event->mmap.len);
450 event->mmap.pgoff = bswap_64(event->mmap.pgoff);
268fb20f
JO		 451
452 if (sample_id_all) {
453 void *data = &event->mmap.filename;
454
9ac3e487 455 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
268fb20f
JO		 456 swap_sample_id_all(event, data);
457 }
ba21594c
ACM		 458}
459
5c5e854b
SE		 460static void perf_event__mmap2_swap(union perf_event *event,
461 bool sample_id_all)
462{
463 event->mmap2.pid = bswap_32(event->mmap2.pid);
464 event->mmap2.tid = bswap_32(event->mmap2.tid);
465 event->mmap2.start = bswap_64(event->mmap2.start);
466 event->mmap2.len = bswap_64(event->mmap2.len);
467 event->mmap2.pgoff = bswap_64(event->mmap2.pgoff);
468 event->mmap2.maj = bswap_32(event->mmap2.maj);
469 event->mmap2.min = bswap_32(event->mmap2.min);
470 event->mmap2.ino = bswap_64(event->mmap2.ino);
471
472 if (sample_id_all) {
473 void *data = &event->mmap2.filename;
474
475 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
476 swap_sample_id_all(event, data);
477 }
478}
268fb20f 479static void perf_event__task_swap(union perf_event *event, bool sample_id_all)
ba21594c 480{
8115d60c
ACM		 481 event->fork.pid = bswap_32(event->fork.pid);
482 event->fork.tid = bswap_32(event->fork.tid);
483 event->fork.ppid = bswap_32(event->fork.ppid);
484 event->fork.ptid = bswap_32(event->fork.ptid);
485 event->fork.time = bswap_64(event->fork.time);
268fb20f
JO		 486
487 if (sample_id_all)
488 swap_sample_id_all(event, &event->fork + 1);
ba21594c
ACM		 489}
490
268fb20f 491static void perf_event__read_swap(union perf_event *event, bool sample_id_all)
ba21594c 492{
8115d60c
ACM		 493 event->read.pid = bswap_32(event->read.pid);
494 event->read.tid = bswap_32(event->read.tid);
495 event->read.value = bswap_64(event->read.value);
496 event->read.time_enabled = bswap_64(event->read.time_enabled);
497 event->read.time_running = bswap_64(event->read.time_running);
498 event->read.id = bswap_64(event->read.id);
268fb20f
JO		 499
500 if (sample_id_all)
501 swap_sample_id_all(event, &event->read + 1);
ba21594c
ACM		 502}
503
4a96f7a0
AH		 504static void perf_event__aux_swap(union perf_event *event, bool sample_id_all)
505{
506 event->aux.aux_offset = bswap_64(event->aux.aux_offset);
507 event->aux.aux_size = bswap_64(event->aux.aux_size);
508 event->aux.flags = bswap_64(event->aux.flags);
509
510 if (sample_id_all)
511 swap_sample_id_all(event, &event->aux + 1);
512}
513
0ad21f68
AH		 514static void perf_event__itrace_start_swap(union perf_event *event,
515 bool sample_id_all)
516{
517 event->itrace_start.pid = bswap_32(event->itrace_start.pid);
518 event->itrace_start.tid = bswap_32(event->itrace_start.tid);
519
520 if (sample_id_all)
521 swap_sample_id_all(event, &event->itrace_start + 1);
522}
523
0286039f
AH		 524static void perf_event__switch_swap(union perf_event *event, bool sample_id_all)
525{
526 if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE) {
527 event->context_switch.next_prev_pid =
528 bswap_32(event->context_switch.next_prev_pid);
529 event->context_switch.next_prev_tid =
530 bswap_32(event->context_switch.next_prev_tid);
531 }
532
533 if (sample_id_all)
534 swap_sample_id_all(event, &event->context_switch + 1);
535}
536
dd96c46b
JO		 537static void perf_event__throttle_swap(union perf_event *event,
538 bool sample_id_all)
539{
540 event->throttle.time = bswap_64(event->throttle.time);
541 event->throttle.id = bswap_64(event->throttle.id);
542 event->throttle.stream_id = bswap_64(event->throttle.stream_id);
543
544 if (sample_id_all)
545 swap_sample_id_all(event, &event->throttle + 1);
546}
547
e108c66e
JO		 548static u8 revbyte(u8 b)
549{
550 int rev = (b >> 4) | ((b & 0xf) << 4);
551 rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2);
552 rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1);
553 return (u8) rev;
554}
555
556/*
557 * XXX this is hack in attempt to carry flags bitfield
558 * throught endian village. ABI says:
559 *
560 * Bit-fields are allocated from right to left (least to most significant)
561 * on little-endian implementations and from left to right (most to least
562 * significant) on big-endian implementations.
563 *
564 * The above seems to be byte specific, so we need to reverse each
565 * byte of the bitfield. 'Internet' also says this might be implementation
566 * specific and we probably need proper fix and carry perf_event_attr
567 * bitfield flags in separate data file FEAT_ section. Thought this seems
568 * to work for now.
569 */
570static void swap_bitfield(u8 *p, unsigned len)
571{
572 unsigned i;
573
574 for (i = 0; i < len; i++) {
575 *p = revbyte(*p);
576 p++;
577 }
578}
579
eda3913b
DA		 580/* exported for swapping attributes in file header */
581void perf_event__attr_swap(struct perf_event_attr *attr)
582{
583 attr->type = bswap_32(attr->type);
584 attr->size = bswap_32(attr->size);
b30b6172
WN		 585
586#define bswap_safe(f, n) \
587 (attr->size > (offsetof(struct perf_event_attr, f) + \
588 sizeof(attr->f) * (n)))
589#define bswap_field(f, sz) \
590do { \
591 if (bswap_safe(f, 0)) \
592 attr->f = bswap_##sz(attr->f); \
593} while(0)
594#define bswap_field_32(f) bswap_field(f, 32)
595#define bswap_field_64(f) bswap_field(f, 64)
596
597 bswap_field_64(config);
598 bswap_field_64(sample_period);
599 bswap_field_64(sample_type);
600 bswap_field_64(read_format);
601 bswap_field_32(wakeup_events);
602 bswap_field_32(bp_type);
603 bswap_field_64(bp_addr);
604 bswap_field_64(bp_len);
605 bswap_field_64(branch_sample_type);
606 bswap_field_64(sample_regs_user);
607 bswap_field_32(sample_stack_user);
608 bswap_field_32(aux_watermark);
609
610 /*
611 * After read_format are bitfields. Check read_format because
612 * we are unable to use offsetof on bitfield.
613 */
614 if (bswap_safe(read_format, 1))
615 swap_bitfield((u8 *) (&attr->read_format + 1),
616 sizeof(u64));
617#undef bswap_field_64
618#undef bswap_field_32
619#undef bswap_field
620#undef bswap_safe
eda3913b
DA		 621}
622
268fb20f 623static void perf_event__hdr_attr_swap(union perf_event *event,
1d037ca1 624 bool sample_id_all __maybe_unused)
2c46dbb5
TZ		 625{
626 size_t size;
627
eda3913b 628 perf_event__attr_swap(&event->attr.attr);
2c46dbb5 629
8115d60c
ACM		 630 size = event->header.size;
631 size -= (void *)&event->attr.id - (void *)event;
632 mem_bswap_64(event->attr.id, size);
2c46dbb5
TZ		 633}
634
ffe77725
JO		 635static void perf_event__event_update_swap(union perf_event *event,
636 bool sample_id_all __maybe_unused)
637{
638 event->event_update.type = bswap_64(event->event_update.type);
639 event->event_update.id = bswap_64(event->event_update.id);
640}
641
268fb20f 642static void perf_event__event_type_swap(union perf_event *event,
1d037ca1 643 bool sample_id_all __maybe_unused)
cd19a035 644{
8115d60c
ACM		 645 event->event_type.event_type.event_id =
646 bswap_64(event->event_type.event_type.event_id);
cd19a035
TZ		 647}
648
268fb20f 649static void perf_event__tracing_data_swap(union perf_event *event,
1d037ca1 650 bool sample_id_all __maybe_unused)
9215545e 651{
8115d60c 652 event->tracing_data.size = bswap_32(event->tracing_data.size);
9215545e
TZ		 653}
654
a16ac023
AH		 655static void perf_event__auxtrace_info_swap(union perf_event *event,
656 bool sample_id_all __maybe_unused)
657{
658 size_t size;
659
660 event->auxtrace_info.type = bswap_32(event->auxtrace_info.type);
661
662 size = event->header.size;
663 size -= (void *)&event->auxtrace_info.priv - (void *)event;
664 mem_bswap_64(event->auxtrace_info.priv, size);
665}
666
667static void perf_event__auxtrace_swap(union perf_event *event,
668 bool sample_id_all __maybe_unused)
669{
670 event->auxtrace.size = bswap_64(event->auxtrace.size);
671 event->auxtrace.offset = bswap_64(event->auxtrace.offset);
672 event->auxtrace.reference = bswap_64(event->auxtrace.reference);
673 event->auxtrace.idx = bswap_32(event->auxtrace.idx);
674 event->auxtrace.tid = bswap_32(event->auxtrace.tid);
675 event->auxtrace.cpu = bswap_32(event->auxtrace.cpu);
676}
677
e9bf54d2
AH		 678static void perf_event__auxtrace_error_swap(union perf_event *event,
679 bool sample_id_all __maybe_unused)
680{
681 event->auxtrace_error.type = bswap_32(event->auxtrace_error.type);
682 event->auxtrace_error.code = bswap_32(event->auxtrace_error.code);
683 event->auxtrace_error.cpu = bswap_32(event->auxtrace_error.cpu);
684 event->auxtrace_error.pid = bswap_32(event->auxtrace_error.pid);
685 event->auxtrace_error.tid = bswap_32(event->auxtrace_error.tid);
686 event->auxtrace_error.ip = bswap_64(event->auxtrace_error.ip);
687}
688
5f3339d2
JO		 689static void perf_event__thread_map_swap(union perf_event *event,
690 bool sample_id_all __maybe_unused)
691{
692 unsigned i;
693
694 event->thread_map.nr = bswap_64(event->thread_map.nr);
695
696 for (i = 0; i < event->thread_map.nr; i++)
697 event->thread_map.entries[i].pid = bswap_64(event->thread_map.entries[i].pid);
698}
699
6640b6c2
JO		 700static void perf_event__cpu_map_swap(union perf_event *event,
701 bool sample_id_all __maybe_unused)
702{
703 struct cpu_map_data *data = &event->cpu_map.data;
704 struct cpu_map_entries *cpus;
705 struct cpu_map_mask *mask;
706 unsigned i;
707
708 data->type = bswap_64(data->type);
709
710 switch (data->type) {
711 case PERF_CPU_MAP__CPUS:
712 cpus = (struct cpu_map_entries *)data->data;
713
714 cpus->nr = bswap_16(cpus->nr);
715
716 for (i = 0; i < cpus->nr; i++)
717 cpus->cpu[i] = bswap_16(cpus->cpu[i]);
718 break;
719 case PERF_CPU_MAP__MASK:
720 mask = (struct cpu_map_mask *) data->data;
721
722 mask->nr = bswap_16(mask->nr);
723 mask->long_size = bswap_16(mask->long_size);
724
725 switch (mask->long_size) {
726 case 4: mem_bswap_32(&mask->mask, mask->nr); break;
727 case 8: mem_bswap_64(&mask->mask, mask->nr); break;
728 default:
729 pr_err("cpu_map swap: unsupported long size\n");
730 }
731 default:
732 break;
733 }
734}
735
374fb9e3
JO		 736static void perf_event__stat_config_swap(union perf_event *event,
737 bool sample_id_all __maybe_unused)
738{
739 u64 size;
740
741 size = event->stat_config.nr * sizeof(event->stat_config.data[0]);
742 size += 1; /* nr item itself */
743 mem_bswap_64(&event->stat_config.nr, size);
744}
745
d80518c9
JO		 746static void perf_event__stat_swap(union perf_event *event,
747 bool sample_id_all __maybe_unused)
748{
749 event->stat.id = bswap_64(event->stat.id);
750 event->stat.thread = bswap_32(event->stat.thread);
751 event->stat.cpu = bswap_32(event->stat.cpu);
752 event->stat.val = bswap_64(event->stat.val);
753 event->stat.ena = bswap_64(event->stat.ena);
754 event->stat.run = bswap_64(event->stat.run);
755}
756
2d8f0f18
JO		 757static void perf_event__stat_round_swap(union perf_event *event,
758 bool sample_id_all __maybe_unused)
759{
760 event->stat_round.type = bswap_64(event->stat_round.type);
761 event->stat_round.time = bswap_64(event->stat_round.time);
762}
763
268fb20f
JO		 764typedef void (*perf_event__swap_op)(union perf_event *event,
765 bool sample_id_all);
ba21594c 766
8115d60c
ACM		 767static perf_event__swap_op perf_event__swap_ops[] = {
768 [PERF_RECORD_MMAP] = perf_event__mmap_swap,
5c5e854b 769 [PERF_RECORD_MMAP2] = perf_event__mmap2_swap,
8115d60c
ACM		 770 [PERF_RECORD_COMM] = perf_event__comm_swap,
771 [PERF_RECORD_FORK] = perf_event__task_swap,
772 [PERF_RECORD_EXIT] = perf_event__task_swap,
773 [PERF_RECORD_LOST] = perf_event__all64_swap,
774 [PERF_RECORD_READ] = perf_event__read_swap,
dd96c46b
JO		 775 [PERF_RECORD_THROTTLE] = perf_event__throttle_swap,
776 [PERF_RECORD_UNTHROTTLE] = perf_event__throttle_swap,
8115d60c 777 [PERF_RECORD_SAMPLE] = perf_event__all64_swap,
4a96f7a0 778 [PERF_RECORD_AUX] = perf_event__aux_swap,
0ad21f68 779 [PERF_RECORD_ITRACE_START] = perf_event__itrace_start_swap,
c4937a91 780 [PERF_RECORD_LOST_SAMPLES] = perf_event__all64_swap,
0286039f
AH		 781 [PERF_RECORD_SWITCH] = perf_event__switch_swap,
782 [PERF_RECORD_SWITCH_CPU_WIDE] = perf_event__switch_swap,
eda3913b 783 [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap,
8115d60c
ACM		 784 [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap,
785 [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap,
786 [PERF_RECORD_HEADER_BUILD_ID] = NULL,
3c659eed 787 [PERF_RECORD_ID_INDEX] = perf_event__all64_swap,
a16ac023
AH		 788 [PERF_RECORD_AUXTRACE_INFO] = perf_event__auxtrace_info_swap,
789 [PERF_RECORD_AUXTRACE] = perf_event__auxtrace_swap,
e9bf54d2 790 [PERF_RECORD_AUXTRACE_ERROR] = perf_event__auxtrace_error_swap,
5f3339d2 791 [PERF_RECORD_THREAD_MAP] = perf_event__thread_map_swap,
6640b6c2 792 [PERF_RECORD_CPU_MAP] = perf_event__cpu_map_swap,
374fb9e3 793 [PERF_RECORD_STAT_CONFIG] = perf_event__stat_config_swap,
d80518c9 794 [PERF_RECORD_STAT] = perf_event__stat_swap,
2d8f0f18 795 [PERF_RECORD_STAT_ROUND] = perf_event__stat_round_swap,
ffe77725 796 [PERF_RECORD_EVENT_UPDATE] = perf_event__event_update_swap,
8115d60c 797 [PERF_RECORD_HEADER_MAX] = NULL,
ba21594c
ACM		 798};
799
d6b17beb
FW		 800/*
801 * When perf record finishes a pass on every buffers, it records this pseudo
802 * event.
803 * We record the max timestamp t found in the pass n.
804 * Assuming these timestamps are monotonic across cpus, we know that if
805 * a buffer still has events with timestamps below t, they will be all
806 * available and then read in the pass n + 1.
807 * Hence when we start to read the pass n + 2, we can safely flush every
808 * events with timestamps below t.
809 *
810 * ============ PASS n =================
811 * CPU 0 | CPU 1
812 * |
813 * cnt1 timestamps | cnt2 timestamps
814 * 1 | 2
815 * 2 | 3
816 * - | 4 <--- max recorded
817 *
818 * ============ PASS n + 1 ==============
819 * CPU 0 | CPU 1
820 * |
821 * cnt1 timestamps | cnt2 timestamps
822 * 3 | 5
823 * 4 | 6
824 * 5 | 7 <---- max recorded
825 *
826 * Flush every events below timestamp 4
827 *
828 * ============ PASS n + 2 ==============
829 * CPU 0 | CPU 1
830 * |
831 * cnt1 timestamps | cnt2 timestamps
832 * 6 | 8
833 * 7 | 9
834 * - | 10
835 *
836 * Flush every events below timestamp 7
837 * etc...
838 */
b7b61cbe 839static int process_finished_round(struct perf_tool *tool __maybe_unused,
1d037ca1 840 union perf_event *event __maybe_unused,
d704ebda 841 struct ordered_events *oe)
d6b17beb 842{
5531e162
AH		 843 if (dump_trace)
844 fprintf(stdout, "\n");
b7b61cbe 845 return ordered_events__flush(oe, OE_FLUSH__ROUND);
d6b17beb
FW		 846}
847
b7b61cbe
ACM		 848int perf_session__queue_event(struct perf_session *s, union perf_event *event,
849 struct perf_sample *sample, u64 file_offset)
c61e52ee 850{
4a6b362f 851 return ordered_events__queue(&s->ordered_events, event, sample, file_offset);
640c03ce 852}
c61e52ee 853
384b6055 854static void callchain__lbr_callstack_printf(struct perf_sample *sample)
640c03ce 855{
384b6055
KL		 856 struct ip_callchain *callchain = sample->callchain;
857 struct branch_stack *lbr_stack = sample->branch_stack;
858 u64 kernel_callchain_nr = callchain->nr;
640c03ce 859 unsigned int i;
c61e52ee 860
384b6055
KL		 861 for (i = 0; i < kernel_callchain_nr; i++) {
862 if (callchain->ips[i] == PERF_CONTEXT_USER)
863 break;
864 }
865
866 if ((i != kernel_callchain_nr) && lbr_stack->nr) {
867 u64 total_nr;
868 /*
869 * LBR callstack can only get user call chain,
870 * i is kernel call chain number,
871 * 1 is PERF_CONTEXT_USER.
872 *
873 * The user call chain is stored in LBR registers.
874 * LBR are pair registers. The caller is stored
875 * in "from" register, while the callee is stored
876 * in "to" register.
877 * For example, there is a call stack
878 * "A"->"B"->"C"->"D".
879 * The LBR registers will recorde like
880 * "C"->"D", "B"->"C", "A"->"B".
881 * So only the first "to" register and all "from"
882 * registers are needed to construct the whole stack.
883 */
884 total_nr = i + 1 + lbr_stack->nr + 1;
885 kernel_callchain_nr = i + 1;
886
887 printf("... LBR call chain: nr:%" PRIu64 "\n", total_nr);
888
889 for (i = 0; i < kernel_callchain_nr; i++)
890 printf("..... %2d: %016" PRIx64 "\n",
891 i, callchain->ips[i]);
892
893 printf("..... %2d: %016" PRIx64 "\n",
894 (int)(kernel_callchain_nr), lbr_stack->entries[0].to);
895 for (i = 0; i < lbr_stack->nr; i++)
896 printf("..... %2d: %016" PRIx64 "\n",
897 (int)(i + kernel_callchain_nr + 1), lbr_stack->entries[i].from);
898 }
899}
900
901static void callchain__printf(struct perf_evsel *evsel,
902 struct perf_sample *sample)
903{
904 unsigned int i;
905 struct ip_callchain *callchain = sample->callchain;
906
907 if (has_branch_callstack(evsel))
908 callchain__lbr_callstack_printf(sample);
909
910 printf("... FP chain: nr:%" PRIu64 "\n", callchain->nr);
640c03ce 911
384b6055 912 for (i = 0; i < callchain->nr; i++)
9486aa38 913 printf("..... %2d: %016" PRIx64 "\n",
384b6055 914 i, callchain->ips[i]);
c61e52ee
FW		 915}
916
b5387528
RAV		 917static void branch_stack__printf(struct perf_sample *sample)
918{
919 uint64_t i;
920
921 printf("... branch stack: nr:%" PRIu64 "\n", sample->branch_stack->nr);
922
0e332f03
AK		 923 for (i = 0; i < sample->branch_stack->nr; i++) {
924 struct branch_entry *e = &sample->branch_stack->entries[i];
925
926 printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 " %hu cycles %s%s%s%s %x\n",
927 i, e->from, e->to,
928 e->flags.cycles,
929 e->flags.mispred ? "M" : " ",
930 e->flags.predicted ? "P" : " ",
931 e->flags.abort ? "A" : " ",
932 e->flags.in_tx ? "T" : " ",
933 (unsigned)e->flags.reserved);
934 }
b5387528
RAV		 935}
936
0f6a3015
JO		 937static void regs_dump__printf(u64 mask, u64 *regs)
938{
939 unsigned rid, i = 0;
940
941 for_each_set_bit(rid, (unsigned long *) &mask, sizeof(mask) * 8) {
942 u64 val = regs[i++];
943
944 printf(".... %-5s 0x%" PRIx64 "\n",
945 perf_reg_name(rid), val);
946 }
947}
948
6a21c0b5
SE		 949static const char *regs_abi[] = {
950 [PERF_SAMPLE_REGS_ABI_NONE] = "none",
951 [PERF_SAMPLE_REGS_ABI_32] = "32-bit",
952 [PERF_SAMPLE_REGS_ABI_64] = "64-bit",
953};
954
955static inline const char *regs_dump_abi(struct regs_dump *d)
956{
957 if (d->abi > PERF_SAMPLE_REGS_ABI_64)
958 return "unknown";
959
960 return regs_abi[d->abi];
961}
962
963static void regs__printf(const char *type, struct regs_dump *regs)
964{
965 u64 mask = regs->mask;
966
967 printf("... %s regs: mask 0x%" PRIx64 " ABI %s\n",
968 type,
969 mask,
970 regs_dump_abi(regs));
971
972 regs_dump__printf(mask, regs->regs);
973}
974
352ea45a 975static void regs_user__printf(struct perf_sample *sample)
0f6a3015
JO		 976{
977 struct regs_dump *user_regs = &sample->user_regs;
978
6a21c0b5
SE		 979 if (user_regs->regs)
980 regs__printf("user", user_regs);
981}
982
983static void regs_intr__printf(struct perf_sample *sample)
984{
985 struct regs_dump *intr_regs = &sample->intr_regs;
986
987 if (intr_regs->regs)
988 regs__printf("intr", intr_regs);
0f6a3015
JO		 989}
990
991static void stack_user__printf(struct stack_dump *dump)
992{
993 printf("... ustack: size %" PRIu64 ", offset 0x%x\n",
994 dump->size, dump->offset);
995}
996
9fa8727a 997static void perf_evlist__print_tstamp(struct perf_evlist *evlist,
8115d60c 998 union perf_event *event,
8d50e5b4 999 struct perf_sample *sample)
9c90a61c 1000{
9fa8727a 1001 u64 sample_type = __perf_evlist__combined_sample_type(evlist);
7f3be652 1002
9c90a61c 1003 if (event->header.type != PERF_RECORD_SAMPLE &&
9fa8727a 1004 !perf_evlist__sample_id_all(evlist)) {
9c90a61c
ACM		 1005 fputs("-1 -1 ", stdout);
1006 return;
1007 }
1008
7f3be652 1009 if ((sample_type & PERF_SAMPLE_CPU))
9c90a61c
ACM		 1010 printf("%u ", sample->cpu);
1011
7f3be652 1012 if (sample_type & PERF_SAMPLE_TIME)
9486aa38 1013 printf("%" PRIu64 " ", sample->time);
9c90a61c
ACM		 1014}
1015
9ede473c
JO		 1016static void sample_read__printf(struct perf_sample *sample, u64 read_format)
1017{
1018 printf("... sample_read:\n");
1019
1020 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
1021 printf("...... time enabled %016" PRIx64 "\n",
1022 sample->read.time_enabled);
1023
1024 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
1025 printf("...... time running %016" PRIx64 "\n",
1026 sample->read.time_running);
1027
1028 if (read_format & PERF_FORMAT_GROUP) {
1029 u64 i;
1030
1031 printf(".... group nr %" PRIu64 "\n", sample->read.group.nr);
1032
1033 for (i = 0; i < sample->read.group.nr; i++) {
1034 struct sample_read_value *value;
1035
1036 value = &sample->read.group.values[i];
1037 printf("..... id %016" PRIx64
1038 ", value %016" PRIx64 "\n",
1039 value->id, value->value);
1040 }
1041 } else
1042 printf("..... id %016" PRIx64 ", value %016" PRIx64 "\n",
1043 sample->read.one.id, sample->read.one.value);
1044}
1045
9fa8727a 1046static void dump_event(struct perf_evlist *evlist, union perf_event *event,
8d50e5b4 1047 u64 file_offset, struct perf_sample *sample)
9aefcab0
TG		 1048{
1049 if (!dump_trace)
1050 return;
1051
9486aa38
ACM		 1052 printf("\n%#" PRIx64 " [%#x]: event: %d\n",
1053 file_offset, event->header.size, event->header.type);
9aefcab0
TG		 1054
1055 trace_event(event);
1056
1057 if (sample)
9fa8727a 1058 perf_evlist__print_tstamp(evlist, event, sample);
9aefcab0 1059
9486aa38 1060 printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset,
8115d60c 1061 event->header.size, perf_event__name(event->header.type));
9aefcab0
TG		 1062}
1063
0f6a3015 1064static void dump_sample(struct perf_evsel *evsel, union perf_event *event,
8d50e5b4 1065 struct perf_sample *sample)
9aefcab0 1066{
7f3be652
ACM		 1067 u64 sample_type;
1068
ddbc24b7
ACM		 1069 if (!dump_trace)
1070 return;
1071
0ea590ae 1072 printf("(IP, 0x%x): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n",
9486aa38 1073 event->header.misc, sample->pid, sample->tid, sample->ip,
7cec0922 1074 sample->period, sample->addr);
9aefcab0 1075
0f6a3015 1076 sample_type = evsel->attr.sample_type;
7f3be652
ACM		 1077
1078 if (sample_type & PERF_SAMPLE_CALLCHAIN)
384b6055 1079 callchain__printf(evsel, sample);
b5387528 1080
384b6055 1081 if ((sample_type & PERF_SAMPLE_BRANCH_STACK) && !has_branch_callstack(evsel))
b5387528 1082 branch_stack__printf(sample);
0f6a3015
JO		 1083
1084 if (sample_type & PERF_SAMPLE_REGS_USER)
352ea45a 1085 regs_user__printf(sample);
0f6a3015 1086
6a21c0b5
SE		 1087 if (sample_type & PERF_SAMPLE_REGS_INTR)
1088 regs_intr__printf(sample);
1089
0f6a3015
JO		 1090 if (sample_type & PERF_SAMPLE_STACK_USER)
1091 stack_user__printf(&sample->user_stack);
05484298
AK		 1092
1093 if (sample_type & PERF_SAMPLE_WEIGHT)
1094 printf("... weight: %" PRIu64 "\n", sample->weight);
98a3b32c
SE		 1095
1096 if (sample_type & PERF_SAMPLE_DATA_SRC)
1097 printf(" . data_src: 0x%"PRIx64"\n", sample->data_src);
9ede473c 1098
475eeab9
AK		 1099 if (sample_type & PERF_SAMPLE_TRANSACTION)
1100 printf("... transaction: %" PRIx64 "\n", sample->transaction);
1101
9ede473c
JO		 1102 if (sample_type & PERF_SAMPLE_READ)
1103 sample_read__printf(sample, evsel->attr.read_format);
9aefcab0
TG		 1104}
1105
54245fdc 1106static struct machine *machines__find_for_cpumode(struct machines *machines,
ef89325f
AH		 1107 union perf_event *event,
1108 struct perf_sample *sample)
743eb868
ACM		 1109{
1110 const u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
ad85ace0 1111 struct machine *machine;
743eb868 1112
7c0f4a41
DA		 1113 if (perf_guest &&
1114 ((cpumode == PERF_RECORD_MISC_GUEST_KERNEL) ||
1115 (cpumode == PERF_RECORD_MISC_GUEST_USER))) {
7fb0a5ee
ND		 1116 u32 pid;
1117
5c5e854b
SE		 1118 if (event->header.type == PERF_RECORD_MMAP
1119 || event->header.type == PERF_RECORD_MMAP2)
7fb0a5ee
ND		 1120 pid = event->mmap.pid;
1121 else
ef89325f 1122 pid = sample->pid;
7fb0a5ee 1123
54245fdc 1124 machine = machines__find(machines, pid);
ad85ace0 1125 if (!machine)
3caeaa56 1126 machine = machines__findnew(machines, DEFAULT_GUEST_KERNEL_ID);
ad85ace0 1127 return machine;
7fb0a5ee 1128 }
743eb868 1129
54245fdc 1130 return &machines->host;
743eb868
ACM		 1131}
1132
313e53b0 1133static int deliver_sample_value(struct perf_evlist *evlist,
e4caec0d
JO		 1134 struct perf_tool *tool,
1135 union perf_event *event,
1136 struct perf_sample *sample,
1137 struct sample_read_value *v,
1138 struct machine *machine)
1139{
313e53b0 1140 struct perf_sample_id *sid = perf_evlist__id2sid(evlist, v->id);
e4caec0d 1141
e4caec0d
JO		 1142 if (sid) {
1143 sample->id = v->id;
1144 sample->period = v->value - sid->period;
1145 sid->period = v->value;
1146 }
1147
1148 if (!sid || sid->evsel == NULL) {
313e53b0 1149 ++evlist->stats.nr_unknown_id;
e4caec0d
JO		 1150 return 0;
1151 }
1152
1153 return tool->sample(tool, event, sample, sid->evsel, machine);
1154}
1155
313e53b0 1156static int deliver_sample_group(struct perf_evlist *evlist,
e4caec0d
JO		 1157 struct perf_tool *tool,
1158 union perf_event *event,
1159 struct perf_sample *sample,
1160 struct machine *machine)
1161{
1162 int ret = -EINVAL;
1163 u64 i;
1164
1165 for (i = 0; i < sample->read.group.nr; i++) {
313e53b0 1166 ret = deliver_sample_value(evlist, tool, event, sample,
e4caec0d
JO		 1167 &sample->read.group.values[i],
1168 machine);
1169 if (ret)
1170 break;
1171 }
1172
1173 return ret;
1174}
1175
1176static int
313e53b0 1177 perf_evlist__deliver_sample(struct perf_evlist *evlist,
e4caec0d
JO		 1178 struct perf_tool *tool,
1179 union perf_event *event,
1180 struct perf_sample *sample,
1181 struct perf_evsel *evsel,
1182 struct machine *machine)
1183{
1184 /* We know evsel != NULL. */
1185 u64 sample_type = evsel->attr.sample_type;
1186 u64 read_format = evsel->attr.read_format;
1187
1188 /* Standard sample delievery. */
1189 if (!(sample_type & PERF_SAMPLE_READ))
1190 return tool->sample(tool, event, sample, evsel, machine);
1191
1192 /* For PERF_SAMPLE_READ we have either single or group mode. */
1193 if (read_format & PERF_FORMAT_GROUP)
313e53b0 1194 return deliver_sample_group(evlist, tool, event, sample,
e4caec0d
JO		 1195 machine);
1196 else
313e53b0 1197 return deliver_sample_value(evlist, tool, event, sample,
e4caec0d
JO		 1198 &sample->read.one, machine);
1199}
1200
d10eb1eb
ACM		 1201static int machines__deliver_event(struct machines *machines,
1202 struct perf_evlist *evlist,
1203 union perf_event *event,
1204 struct perf_sample *sample,
1205 struct perf_tool *tool, u64 file_offset)
cbf41645 1206{
9e69c210 1207 struct perf_evsel *evsel;
743eb868 1208 struct machine *machine;
9e69c210 1209
9fa8727a 1210 dump_event(evlist, event, file_offset, sample);
532e7269 1211
313e53b0 1212 evsel = perf_evlist__id2evsel(evlist, sample->id);
7b27509f 1213
fa713a4e 1214 machine = machines__find_for_cpumode(machines, event, sample);
743eb868 1215
cbf41645
TG		 1216 switch (event->header.type) {
1217 case PERF_RECORD_SAMPLE:
9e69c210 1218 if (evsel == NULL) {
313e53b0 1219 ++evlist->stats.nr_unknown_id;
6782206b 1220 return 0;
9e69c210 1221 }
1b29ac59 1222 dump_sample(evsel, event, sample);
0c095715 1223 if (machine == NULL) {
313e53b0 1224 ++evlist->stats.nr_unprocessable_samples;
6782206b 1225 return 0;
0c095715 1226 }
313e53b0 1227 return perf_evlist__deliver_sample(evlist, tool, event, sample, evsel, machine);
cbf41645 1228 case PERF_RECORD_MMAP:
45694aa7 1229 return tool->mmap(tool, event, sample, machine);
5c5e854b 1230 case PERF_RECORD_MMAP2:
930e6fcd
KL		 1231 if (event->header.misc & PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT)
1232 ++evlist->stats.nr_proc_map_timeout;
5c5e854b 1233 return tool->mmap2(tool, event, sample, machine);
cbf41645 1234 case PERF_RECORD_COMM:
45694aa7 1235 return tool->comm(tool, event, sample, machine);
cbf41645 1236 case PERF_RECORD_FORK:
45694aa7 1237 return tool->fork(tool, event, sample, machine);
cbf41645 1238 case PERF_RECORD_EXIT:
45694aa7 1239 return tool->exit(tool, event, sample, machine);
cbf41645 1240 case PERF_RECORD_LOST:
45694aa7 1241 if (tool->lost == perf_event__process_lost)
313e53b0 1242 evlist->stats.total_lost += event->lost.lost;
45694aa7 1243 return tool->lost(tool, event, sample, machine);
c4937a91
KL		 1244 case PERF_RECORD_LOST_SAMPLES:
1245 if (tool->lost_samples == perf_event__process_lost_samples)
1246 evlist->stats.total_lost_samples += event->lost_samples.lost;
1247 return tool->lost_samples(tool, event, sample, machine);
cbf41645 1248 case PERF_RECORD_READ:
45694aa7 1249 return tool->read(tool, event, sample, evsel, machine);
cbf41645 1250 case PERF_RECORD_THROTTLE:
45694aa7 1251 return tool->throttle(tool, event, sample, machine);
cbf41645 1252 case PERF_RECORD_UNTHROTTLE:
45694aa7 1253 return tool->unthrottle(tool, event, sample, machine);
4a96f7a0 1254 case PERF_RECORD_AUX:
a38f48e3
AH		 1255 if (tool->aux == perf_event__process_aux &&
1256 (event->aux.flags & PERF_AUX_FLAG_TRUNCATED))
1257 evlist->stats.total_aux_lost += 1;
4a96f7a0 1258 return tool->aux(tool, event, sample, machine);
0ad21f68
AH		 1259 case PERF_RECORD_ITRACE_START:
1260 return tool->itrace_start(tool, event, sample, machine);
0286039f
AH		 1261 case PERF_RECORD_SWITCH:
1262 case PERF_RECORD_SWITCH_CPU_WIDE:
1263 return tool->context_switch(tool, event, sample, machine);
cbf41645 1264 default:
313e53b0 1265 ++evlist->stats.nr_unknown_events;
cbf41645
TG		 1266 return -1;
1267 }
1268}
1269
c446870d
AH		 1270static int perf_session__deliver_event(struct perf_session *session,
1271 union perf_event *event,
1272 struct perf_sample *sample,
1273 struct perf_tool *tool,
1274 u64 file_offset)
1275{
1276 int ret;
1277
1278 ret = auxtrace__process_event(session, event, sample, tool);
1279 if (ret < 0)
1280 return ret;
1281 if (ret > 0)
1282 return 0;
1283
1284 return machines__deliver_event(&session->machines, session->evlist,
1285 event, sample, tool, file_offset);
1286}
1287
d5652d86
AH		 1288static s64 perf_session__process_user_event(struct perf_session *session,
1289 union perf_event *event,
d5652d86 1290 u64 file_offset)
06aae590 1291{
d704ebda 1292 struct ordered_events *oe = &session->ordered_events;
9870d780 1293 struct perf_tool *tool = session->tool;
cc9784bd 1294 int fd = perf_data_file__fd(session->file);
10d0f086
ACM		 1295 int err;
1296
9fa8727a 1297 dump_event(session->evlist, event, file_offset, NULL);
06aae590 1298
cbf41645 1299 /* These events are processed right away */
06aae590 1300 switch (event->header.type) {
2c46dbb5 1301 case PERF_RECORD_HEADER_ATTR:
47c3d109 1302 err = tool->attr(tool, event, &session->evlist);
cfe1c414 1303 if (err == 0) {
7b56cce2 1304 perf_session__set_id_hdr_size(session);
cfe1c414
AH		 1305 perf_session__set_comm_exec(session);
1306 }
10d0f086 1307 return err;
ffe77725
JO		 1308 case PERF_RECORD_EVENT_UPDATE:
1309 return tool->event_update(tool, event, &session->evlist);
f67697bd
JO		 1310 case PERF_RECORD_HEADER_EVENT_TYPE:
1311 /*
1312 * Depreceated, but we need to handle it for sake
1313 * of old data files create in pipe mode.
1314 */
1315 return 0;
9215545e
TZ		 1316 case PERF_RECORD_HEADER_TRACING_DATA:
1317 /* setup for reading amidst mmap */
cc9784bd 1318 lseek(fd, file_offset, SEEK_SET);
47c3d109 1319 return tool->tracing_data(tool, event, session);
c7929e47 1320 case PERF_RECORD_HEADER_BUILD_ID:
45694aa7 1321 return tool->build_id(tool, event, session);
d6b17beb 1322 case PERF_RECORD_FINISHED_ROUND:
d704ebda 1323 return tool->finished_round(tool, event, oe);
3c659eed
AH		 1324 case PERF_RECORD_ID_INDEX:
1325 return tool->id_index(tool, event, session);
a16ac023
AH		 1326 case PERF_RECORD_AUXTRACE_INFO:
1327 return tool->auxtrace_info(tool, event, session);
1328 case PERF_RECORD_AUXTRACE:
1329 /* setup for reading amidst mmap */
1330 lseek(fd, file_offset + event->header.size, SEEK_SET);
1331 return tool->auxtrace(tool, event, session);
e9bf54d2 1332 case PERF_RECORD_AUXTRACE_ERROR:
85ed4729 1333 perf_session__auxtrace_error_inc(session, event);
e9bf54d2 1334 return tool->auxtrace_error(tool, event, session);
5f3339d2
JO		 1335 case PERF_RECORD_THREAD_MAP:
1336 return tool->thread_map(tool, event, session);
6640b6c2
JO		 1337 case PERF_RECORD_CPU_MAP:
1338 return tool->cpu_map(tool, event, session);
374fb9e3
JO		 1339 case PERF_RECORD_STAT_CONFIG:
1340 return tool->stat_config(tool, event, session);
d80518c9
JO		 1341 case PERF_RECORD_STAT:
1342 return tool->stat(tool, event, session);
2d8f0f18
JO		 1343 case PERF_RECORD_STAT_ROUND:
1344 return tool->stat_round(tool, event, session);
06aae590 1345 default:
ba74f064 1346 return -EINVAL;
06aae590 1347 }
ba74f064
TG		 1348}
1349
a293829d
AH		 1350int perf_session__deliver_synth_event(struct perf_session *session,
1351 union perf_event *event,
b7b61cbe 1352 struct perf_sample *sample)
a293829d 1353{
fa713a4e 1354 struct perf_evlist *evlist = session->evlist;
9870d780 1355 struct perf_tool *tool = session->tool;
fa713a4e
ACM		 1356
1357 events_stats__inc(&evlist->stats, event->header.type);
a293829d
AH		 1358
1359 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
b7b61cbe 1360 return perf_session__process_user_event(session, event, 0);
a293829d 1361
fa713a4e 1362 return machines__deliver_event(&session->machines, evlist, event, sample, tool, 0);
a293829d
AH		 1363}
1364
268fb20f
JO		 1365static void event_swap(union perf_event *event, bool sample_id_all)
1366{
1367 perf_event__swap_op swap;
1368
1369 swap = perf_event__swap_ops[event->header.type];
1370 if (swap)
1371 swap(event, sample_id_all);
1372}
1373
5a52f33a
AH		 1374int perf_session__peek_event(struct perf_session *session, off_t file_offset,
1375 void *buf, size_t buf_sz,
1376 union perf_event **event_ptr,
1377 struct perf_sample *sample)
1378{
1379 union perf_event *event;
1380 size_t hdr_sz, rest;
1381 int fd;
1382
1383 if (session->one_mmap && !session->header.needs_swap) {
1384 event = file_offset - session->one_mmap_offset +
1385 session->one_mmap_addr;
1386 goto out_parse_sample;
1387 }
1388
1389 if (perf_data_file__is_pipe(session->file))
1390 return -1;
1391
1392 fd = perf_data_file__fd(session->file);
1393 hdr_sz = sizeof(struct perf_event_header);
1394
1395 if (buf_sz < hdr_sz)
1396 return -1;
1397
1398 if (lseek(fd, file_offset, SEEK_SET) == (off_t)-1 ||
554e92ed 1399 readn(fd, buf, hdr_sz) != (ssize_t)hdr_sz)
5a52f33a
AH		 1400 return -1;
1401
1402 event = (union perf_event *)buf;
1403
1404 if (session->header.needs_swap)
1405 perf_event_header__bswap(&event->header);
1406
554e92ed 1407 if (event->header.size < hdr_sz || event->header.size > buf_sz)
5a52f33a
AH		 1408 return -1;
1409
1410 rest = event->header.size - hdr_sz;
1411
554e92ed 1412 if (readn(fd, buf, rest) != (ssize_t)rest)
5a52f33a
AH		 1413 return -1;
1414
1415 if (session->header.needs_swap)
1416 event_swap(event, perf_evlist__sample_id_all(session->evlist));
1417
1418out_parse_sample:
1419
1420 if (sample && event->header.type < PERF_RECORD_USER_TYPE_START &&
1421 perf_evlist__parse_sample(session->evlist, event, sample))
1422 return -1;
1423
1424 *event_ptr = event;
1425
1426 return 0;
1427}
1428
d5652d86 1429static s64 perf_session__process_event(struct perf_session *session,
b7b61cbe 1430 union perf_event *event, u64 file_offset)
ba74f064 1431{
313e53b0 1432 struct perf_evlist *evlist = session->evlist;
9870d780 1433 struct perf_tool *tool = session->tool;
8d50e5b4 1434 struct perf_sample sample;
ba74f064
TG		 1435 int ret;
1436
268fb20f 1437 if (session->header.needs_swap)
313e53b0 1438 event_swap(event, perf_evlist__sample_id_all(evlist));
ba74f064
TG		 1439
1440 if (event->header.type >= PERF_RECORD_HEADER_MAX)
1441 return -EINVAL;
1442
313e53b0 1443 events_stats__inc(&evlist->stats, event->header.type);
ba74f064
TG		 1444
1445 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
b7b61cbe 1446 return perf_session__process_user_event(session, event, file_offset);
cbf41645 1447
3dfc2c0a
TG		 1448 /*
1449 * For all kernel events we get the sample data
1450 */
313e53b0 1451 ret = perf_evlist__parse_sample(evlist, event, &sample);
5538beca
FW		 1452 if (ret)
1453 return ret;
3dfc2c0a 1454
0a8cb85c 1455 if (tool->ordered_events) {
b7b61cbe 1456 ret = perf_session__queue_event(session, event, &sample, file_offset);
cbf41645
TG		 1457 if (ret != -ETIME)
1458 return ret;
1459 }
1460
c446870d
AH		 1461 return perf_session__deliver_event(session, event, &sample, tool,
1462 file_offset);
06aae590
ACM		 1463}
1464
316c7136 1465void perf_event_header__bswap(struct perf_event_header *hdr)
ba21594c 1466{
316c7136
ACM		 1467 hdr->type = bswap_32(hdr->type);
1468 hdr->misc = bswap_16(hdr->misc);
1469 hdr->size = bswap_16(hdr->size);
ba21594c
ACM		 1470}
1471
b424eba2
ACM		 1472struct thread *perf_session__findnew(struct perf_session *session, pid_t pid)
1473{
1fcb8768 1474 return machine__findnew_thread(&session->machines.host, -1, pid);
b424eba2
ACM		 1475}
1476
9d8b172f 1477int perf_session__register_idle_thread(struct perf_session *session)
06aae590 1478{
1fcb8768 1479 struct thread *thread;
9d8b172f 1480 int err = 0;
06aae590 1481
1fcb8768 1482 thread = machine__findnew_thread(&session->machines.host, 0, 0);
162f0bef 1483 if (thread == NULL || thread__set_comm(thread, "swapper", 0)) {
06aae590 1484 pr_err("problem inserting idle task.\n");
9d8b172f 1485 err = -1;
06aae590
ACM		 1486 }
1487
9d8b172f
MH		 1488 /* machine__findnew_thread() got the thread, so put it */
1489 thread__put(thread);
1490 return err;
06aae590
ACM		 1491}
1492
9870d780 1493static void perf_session__warn_about_errors(const struct perf_session *session)
11095994 1494{
9870d780
ACM		 1495 const struct events_stats *stats = &session->evlist->stats;
1496 const struct ordered_events *oe = &session->ordered_events;
1497
1498 if (session->tool->lost == perf_event__process_lost &&
ccda068f 1499 stats->nr_events[PERF_RECORD_LOST] != 0) {
7b27509f
ACM		 1500 ui__warning("Processed %d events and lost %d chunks!\n\n"
1501 "Check IO/CPU overload!\n\n",
ccda068f
ACM		 1502 stats->nr_events[0],
1503 stats->nr_events[PERF_RECORD_LOST]);
11095994
ACM		 1504 }
1505
c4937a91
KL		 1506 if (session->tool->lost_samples == perf_event__process_lost_samples) {
1507 double drop_rate;
1508
1509 drop_rate = (double)stats->total_lost_samples /
1510 (double) (stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples);
1511 if (drop_rate > 0.05) {
6ba29c2f 1512 ui__warning("Processed %" PRIu64 " samples and lost %3.2f%% samples!\n\n",
c4937a91
KL		 1513 stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples,
1514 drop_rate * 100.0);
1515 }
1516 }
1517
a38f48e3
AH		 1518 if (session->tool->aux == perf_event__process_aux &&
1519 stats->total_aux_lost != 0) {
1520 ui__warning("AUX data lost %" PRIu64 " times out of %u!\n\n",
1521 stats->total_aux_lost,
1522 stats->nr_events[PERF_RECORD_AUX]);
1523 }
1524
ccda068f 1525 if (stats->nr_unknown_events != 0) {
11095994
ACM		 1526 ui__warning("Found %u unknown events!\n\n"
1527 "Is this an older tool processing a perf.data "
1528 "file generated by a more recent tool?\n\n"
1529 "If that is not the case, consider "
1530 "reporting to linux-kernel@vger.kernel.org.\n\n",
ccda068f 1531 stats->nr_unknown_events);
11095994
ACM		 1532 }
1533
ccda068f 1534 if (stats->nr_unknown_id != 0) {
9e69c210 1535 ui__warning("%u samples with id not present in the header\n",
ccda068f 1536 stats->nr_unknown_id);
9e69c210
ACM		 1537 }
1538
ccda068f 1539 if (stats->nr_invalid_chains != 0) {
75be989a
ACM		 1540 ui__warning("Found invalid callchains!\n\n"
1541 "%u out of %u events were discarded for this reason.\n\n"
1542 "Consider reporting to linux-kernel@vger.kernel.org.\n\n",
ccda068f
ACM		 1543 stats->nr_invalid_chains,
1544 stats->nr_events[PERF_RECORD_SAMPLE]);
75be989a 1545 }
0c095715 1546
ccda068f 1547 if (stats->nr_unprocessable_samples != 0) {
0c095715
JR		 1548 ui__warning("%u unprocessable samples recorded.\n"
1549 "Do you have a KVM guest running and not using 'perf kvm'?\n",
ccda068f 1550 stats->nr_unprocessable_samples);
0c095715 1551 }
f61ff6c0 1552
9870d780
ACM		 1553 if (oe->nr_unordered_events != 0)
1554 ui__warning("%u out of order events recorded.\n", oe->nr_unordered_events);
85ed4729
AH		 1555
1556 events_stats__auxtrace_error_warn(stats);
930e6fcd
KL		 1557
1558 if (stats->nr_proc_map_timeout != 0) {
1559 ui__warning("%d map information files for pre-existing threads were\n"
1560 "not processed, if there are samples for addresses they\n"
1561 "will not be resolved, you may find out which are these\n"
1562 "threads by running with -v and redirecting the output\n"
9d9cad76
KL		 1563 "to a file.\n"
1564 "The time limit to process proc map is too short?\n"
1565 "Increase it by --proc-map-timeout\n",
930e6fcd
KL		 1566 stats->nr_proc_map_timeout);
1567 }
11095994
ACM		 1568}
1569
a5499b37
AH		 1570static int perf_session__flush_thread_stack(struct thread *thread,
1571 void *p __maybe_unused)
1572{
1573 return thread_stack__flush(thread);
1574}
1575
1576static int perf_session__flush_thread_stacks(struct perf_session *session)
1577{
1578 return machines__for_each_thread(&session->machines,
1579 perf_session__flush_thread_stack,
1580 NULL);
1581}
1582
8dc58101
TZ		 1583volatile int session_done;
1584
b7b61cbe 1585static int __perf_session__process_pipe_events(struct perf_session *session)
8dc58101 1586{
fa713a4e 1587 struct ordered_events *oe = &session->ordered_events;
9870d780 1588 struct perf_tool *tool = session->tool;
316c7136 1589 int fd = perf_data_file__fd(session->file);
444d2866
SE		 1590 union perf_event *event;
1591 uint32_t size, cur_size = 0;
1592 void *buf = NULL;
d5652d86 1593 s64 skip = 0;
8dc58101 1594 u64 head;
727ebd54 1595 ssize_t err;
8dc58101
TZ		 1596 void *p;
1597
45694aa7 1598 perf_tool__fill_defaults(tool);
8dc58101
TZ		 1599
1600 head = 0;
444d2866
SE		 1601 cur_size = sizeof(union perf_event);
1602
1603 buf = malloc(cur_size);
1604 if (!buf)
1605 return -errno;
8dc58101 1606more:
444d2866 1607 event = buf;
cc9784bd 1608 err = readn(fd, event, sizeof(struct perf_event_header));
8dc58101
TZ		 1609 if (err <= 0) {
1610 if (err == 0)
1611 goto done;
1612
1613 pr_err("failed to read event header\n");
1614 goto out_err;
1615 }
1616
316c7136 1617 if (session->header.needs_swap)
444d2866 1618 perf_event_header__bswap(&event->header);
8dc58101 1619
444d2866 1620 size = event->header.size;
27389d78
AH		 1621 if (size < sizeof(struct perf_event_header)) {
1622 pr_err("bad event header size\n");
1623 goto out_err;
1624 }
8dc58101 1625
444d2866
SE		 1626 if (size > cur_size) {
1627 void *new = realloc(buf, size);
1628 if (!new) {
1629 pr_err("failed to allocate memory to read event\n");
1630 goto out_err;
1631 }
1632 buf = new;
1633 cur_size = size;
1634 event = buf;
1635 }
1636 p = event;
8dc58101
TZ		 1637 p += sizeof(struct perf_event_header);
1638
794e43b5 1639 if (size - sizeof(struct perf_event_header)) {
cc9784bd 1640 err = readn(fd, p, size - sizeof(struct perf_event_header));
794e43b5
TZ		 1641 if (err <= 0) {
1642 if (err == 0) {
1643 pr_err("unexpected end of event stream\n");
1644 goto done;
1645 }
8dc58101 1646
794e43b5
TZ		 1647 pr_err("failed to read event data\n");
1648 goto out_err;
1649 }
8dc58101
TZ		 1650 }
1651
b7b61cbe 1652 if ((skip = perf_session__process_event(session, event, head)) < 0) {
9389a460 1653 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
444d2866 1654 head, event->header.size, event->header.type);
9389a460
JO		 1655 err = -EINVAL;
1656 goto out_err;
8dc58101
TZ		 1657 }
1658
1659 head += size;
1660
8dc58101
TZ		 1661 if (skip > 0)
1662 head += skip;
1663
1664 if (!session_done())
1665 goto more;
1666done:
8c16b649 1667 /* do the final flush for ordered samples */
b7b61cbe 1668 err = ordered_events__flush(oe, OE_FLUSH__FINAL);
c446870d
AH		 1669 if (err)
1670 goto out_err;
1671 err = auxtrace__flush_events(session, tool);
a5499b37
AH		 1672 if (err)
1673 goto out_err;
1674 err = perf_session__flush_thread_stacks(session);
8dc58101 1675out_err:
444d2866 1676 free(buf);
9870d780 1677 perf_session__warn_about_errors(session);
adc56ed1 1678 ordered_events__free(&session->ordered_events);
c446870d 1679 auxtrace__free_events(session);
8dc58101
TZ		 1680 return err;
1681}
1682
998bedc8
FW		 1683static union perf_event *
1684fetch_mmaped_event(struct perf_session *session,
1685 u64 head, size_t mmap_size, char *buf)
1686{
1687 union perf_event *event;
1688
1689 /*
1690 * Ensure we have enough space remaining to read
1691 * the size of the event in the headers.
1692 */
1693 if (head + sizeof(event->header) > mmap_size)
1694 return NULL;
1695
1696 event = (union perf_event *)(buf + head);
1697
1698 if (session->header.needs_swap)
1699 perf_event_header__bswap(&event->header);
1700
27389d78
AH		 1701 if (head + event->header.size > mmap_size) {
1702 /* We're not fetching the event so swap back again */
1703 if (session->header.needs_swap)
1704 perf_event_header__bswap(&event->header);
998bedc8 1705 return NULL;
27389d78 1706 }
998bedc8
FW		 1707
1708 return event;
1709}
1710
35d48ddf
DM		 1711/*
1712 * On 64bit we can mmap the data file in one go. No need for tiny mmap
1713 * slices. On 32bit we use 32MB.
1714 */
1715#if BITS_PER_LONG == 64
1716#define MMAP_SIZE ULLONG_MAX
1717#define NUM_MMAPS 1
1718#else
1719#define MMAP_SIZE (32 * 1024 * 1024ULL)
1720#define NUM_MMAPS 128
1721#endif
1722
4ac30cf7
NK		 1723static int __perf_session__process_events(struct perf_session *session,
1724 u64 data_offset, u64 data_size,
b7b61cbe 1725 u64 file_size)
06aae590 1726{
fa713a4e 1727 struct ordered_events *oe = &session->ordered_events;
9870d780 1728 struct perf_tool *tool = session->tool;
cc9784bd 1729 int fd = perf_data_file__fd(session->file);
d5652d86 1730 u64 head, page_offset, file_offset, file_pos, size;
fe174207 1731 int err, mmap_prot, mmap_flags, map_idx = 0;
0c1fe6b2 1732 size_t mmap_size;
35d48ddf 1733 char *buf, *mmaps[NUM_MMAPS];
8115d60c 1734 union perf_event *event;
4d3001fd 1735 struct ui_progress prog;
d5652d86 1736 s64 skip;
0331ee0c 1737
45694aa7 1738 perf_tool__fill_defaults(tool);
06aae590 1739
0331ee0c
TG		 1740 page_offset = page_size * (data_offset / page_size);
1741 file_offset = page_offset;
1742 head = data_offset - page_offset;
06aae590 1743
381c02f6
MR		 1744 if (data_size == 0)
1745 goto out;
1746
1747 if (data_offset + data_size < file_size)
d6513281
TG		 1748 file_size = data_offset + data_size;
1749
4d3001fd 1750 ui_progress__init(&prog, file_size, "Processing events...");
55b44629 1751
35d48ddf 1752 mmap_size = MMAP_SIZE;
919d86d3 1753 if (mmap_size > file_size) {
55b44629 1754 mmap_size = file_size;
919d86d3
AH		 1755 session->one_mmap = true;
1756 }
55b44629 1757
fe174207
TG		 1758 memset(mmaps, 0, sizeof(mmaps));
1759
ba21594c
ACM		 1760 mmap_prot = PROT_READ;
1761 mmap_flags = MAP_SHARED;
1762
0331ee0c 1763 if (session->header.needs_swap) {
ba21594c
ACM		 1764 mmap_prot |= PROT_WRITE;
1765 mmap_flags = MAP_PRIVATE;
1766 }
06aae590 1767remap:
cc9784bd 1768 buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, fd,
55b44629 1769 file_offset);
06aae590
ACM		 1770 if (buf == MAP_FAILED) {
1771 pr_err("failed to mmap file\n");
1772 err = -errno;
1773 goto out_err;
1774 }
fe174207
TG		 1775 mmaps[map_idx] = buf;
1776 map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1);
d6513281 1777 file_pos = file_offset + head;
919d86d3
AH		 1778 if (session->one_mmap) {
1779 session->one_mmap_addr = buf;
1780 session->one_mmap_offset = file_offset;
1781 }
06aae590
ACM		 1782
1783more:
998bedc8
FW		 1784 event = fetch_mmaped_event(session, head, mmap_size, buf);
1785 if (!event) {
fe174207
TG		 1786 if (mmaps[map_idx]) {
1787 munmap(mmaps[map_idx], mmap_size);
1788 mmaps[map_idx] = NULL;
1789 }
06aae590 1790
0331ee0c
TG		 1791 page_offset = page_size * (head / page_size);
1792 file_offset += page_offset;
1793 head -= page_offset;
06aae590
ACM		 1794 goto remap;
1795 }
1796
1797 size = event->header.size;
1798
27389d78 1799 if (size < sizeof(struct perf_event_header) ||
b7b61cbe 1800 (skip = perf_session__process_event(session, event, file_pos)) < 0) {
9389a460
JO		 1801 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
1802 file_offset + head, event->header.size,
1803 event->header.type);
1804 err = -EINVAL;
1805 goto out_err;
06aae590
ACM		 1806 }
1807
6f917c70
AH		 1808 if (skip)
1809 size += skip;
1810
06aae590 1811 head += size;
d6513281 1812 file_pos += size;
06aae590 1813
4d3001fd 1814 ui_progress__update(&prog, size);
55b44629 1815
33e940a2 1816 if (session_done())
8c16b649 1817 goto out;
33e940a2 1818
d6513281 1819 if (file_pos < file_size)
06aae590 1820 goto more;
d6513281 1821
8c16b649 1822out:
c61e52ee 1823 /* do the final flush for ordered samples */
b7b61cbe 1824 err = ordered_events__flush(oe, OE_FLUSH__FINAL);
c446870d
AH		 1825 if (err)
1826 goto out_err;
1827 err = auxtrace__flush_events(session, tool);
a5499b37
AH		 1828 if (err)
1829 goto out_err;
1830 err = perf_session__flush_thread_stacks(session);
06aae590 1831out_err:
a5580f3e 1832 ui_progress__finish();
9870d780 1833 perf_session__warn_about_errors(session);
adc56ed1 1834 ordered_events__free(&session->ordered_events);
c446870d 1835 auxtrace__free_events(session);
919d86d3 1836 session->one_mmap = false;
06aae590
ACM		 1837 return err;
1838}
27295592 1839
b7b61cbe 1840int perf_session__process_events(struct perf_session *session)
6122e4e4 1841{
316c7136 1842 u64 size = perf_data_file__size(session->file);
6122e4e4
ACM		 1843 int err;
1844
9d8b172f 1845 if (perf_session__register_idle_thread(session) < 0)
6122e4e4
ACM		 1846 return -ENOMEM;
1847
316c7136
ACM		 1848 if (!perf_data_file__is_pipe(session->file))
1849 err = __perf_session__process_events(session,
1850 session->header.data_offset,
b7b61cbe 1851 session->header.data_size, size);
8dc58101 1852 else
b7b61cbe 1853 err = __perf_session__process_pipe_events(session);
88ca895d 1854
6122e4e4
ACM		 1855 return err;
1856}
1857
7f3be652 1858bool perf_session__has_traces(struct perf_session *session, const char *msg)
27295592 1859{
93ea01c2
DA		 1860 struct perf_evsel *evsel;
1861
0050f7aa 1862 evlist__for_each(session->evlist, evsel) {
93ea01c2
DA		 1863 if (evsel->attr.type == PERF_TYPE_TRACEPOINT)
1864 return true;
27295592
ACM		 1865 }
1866
93ea01c2
DA		 1867 pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg);
1868 return false;
27295592 1869}
56b03f3c 1870
743eb868
ACM		 1871int maps__set_kallsyms_ref_reloc_sym(struct map **maps,
1872 const char *symbol_name, u64 addr)
56b03f3c
ACM		 1873{
1874 char *bracket;
9de89fe7 1875 enum map_type i;
a1645ce1
ZY		 1876 struct ref_reloc_sym *ref;
1877
1878 ref = zalloc(sizeof(struct ref_reloc_sym));
1879 if (ref == NULL)
1880 return -ENOMEM;
56b03f3c 1881
a1645ce1
ZY		 1882 ref->name = strdup(symbol_name);
1883 if (ref->name == NULL) {
1884 free(ref);
56b03f3c 1885 return -ENOMEM;
a1645ce1 1886 }
56b03f3c 1887
a1645ce1 1888 bracket = strchr(ref->name, ']');
56b03f3c
ACM		 1889 if (bracket)
1890 *bracket = '\0';
1891
a1645ce1 1892 ref->addr = addr;
9de89fe7
ACM		 1893
1894 for (i = 0; i < MAP__NR_TYPES; ++i) {
a1645ce1 1895 struct kmap *kmap = map__kmap(maps[i]);
ba92732e
WN		 1896
1897 if (!kmap)
1898 continue;
a1645ce1 1899 kmap->ref_reloc_sym = ref;
9de89fe7
ACM		 1900 }
1901
56b03f3c
ACM		 1902 return 0;
1903}
1f626bc3 1904
316c7136 1905size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp)
1f626bc3 1906{
316c7136 1907 return machines__fprintf_dsos(&session->machines, fp);
1f626bc3 1908}
f869097e 1909
316c7136 1910size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp,
417c2ff6 1911 bool (skip)(struct dso *dso, int parm), int parm)
f869097e 1912{
316c7136 1913 return machines__fprintf_dsos_buildid(&session->machines, fp, skip, parm);
f869097e 1914}
e248de33
ACM		 1915
1916size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp)
1917{
c446870d
AH		 1918 size_t ret;
1919 const char *msg = "";
1920
1921 if (perf_header__has_feat(&session->header, HEADER_AUXTRACE))
1922 msg = " (excludes AUX area (e.g. instruction trace) decoded / synthesized events)";
1923
fe692ac8 1924 ret = fprintf(fp, "\nAggregated stats:%s\n", msg);
e248de33 1925
75be989a 1926 ret += events_stats__fprintf(&session->evlist->stats, fp);
e248de33
ACM		 1927 return ret;
1928}
c0230b2b 1929
b424eba2
ACM		 1930size_t perf_session__fprintf(struct perf_session *session, FILE *fp)
1931{
1932 /*
1933 * FIXME: Here we have to actually print all the machines in this
1934 * session, not just the host...
1935 */
876650e6 1936 return machine__fprintf(&session->machines.host, fp);
b424eba2
ACM		 1937}
1938
9cbdb702
DA		 1939struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session,
1940 unsigned int type)
1941{
1942 struct perf_evsel *pos;
1943
0050f7aa 1944 evlist__for_each(session->evlist, pos) {
9cbdb702
DA		 1945 if (pos->attr.type == type)
1946 return pos;
1947 }
1948 return NULL;
1949}
1950
a2cb3cf2 1951void perf_evsel__print_ip(struct perf_evsel *evsel, struct perf_sample *sample,
cc22e575 1952 struct addr_location *al,
307cbb92 1953 unsigned int print_opts, unsigned int stack_depth)
c0230b2b 1954{
c0230b2b 1955 struct callchain_cursor_node *node;
a6ffaf91
DA		 1956 int print_ip = print_opts & PRINT_IP_OPT_IP;
1957 int print_sym = print_opts & PRINT_IP_OPT_SYM;
1958 int print_dso = print_opts & PRINT_IP_OPT_DSO;
1959 int print_symoffset = print_opts & PRINT_IP_OPT_SYMOFFSET;
b0b35f01 1960 int print_oneline = print_opts & PRINT_IP_OPT_ONELINE;
cc8fae1d 1961 int print_srcline = print_opts & PRINT_IP_OPT_SRCLINE;
b0b35f01 1962 char s = print_oneline ? ' ' : '\t';
c0230b2b 1963
c0230b2b 1964 if (symbol_conf.use_callchain && sample->callchain) {
a2cb3cf2 1965 struct addr_location node_al;
c0230b2b 1966
cc8b7c2b
ACM		 1967 if (thread__resolve_callchain(al->thread, evsel,
1968 sample, NULL, NULL,
03cd1fed 1969 stack_depth) != 0) {
c0230b2b
DA		 1970 if (verbose)
1971 error("Failed to resolve callchain. Skipping\n");
1972 return;
1973 }
47260645 1974 callchain_cursor_commit(&callchain_cursor);
c0230b2b 1975
a2cb3cf2
AH		 1976 if (print_symoffset)
1977 node_al = *al;
1978
307cbb92 1979 while (stack_depth) {
a4eb24a4
AH		 1980 u64 addr = 0;
1981
47260645 1982 node = callchain_cursor_current(&callchain_cursor);
c0230b2b
DA		 1983 if (!node)
1984 break;
1985
d2ff1b14
DA		 1986 if (node->sym && node->sym->ignore)
1987 goto next;
1988
a6ffaf91 1989 if (print_ip)
b0b35f01 1990 printf("%c%16" PRIx64, s, node->ip);
a6ffaf91 1991
a4eb24a4
AH		 1992 if (node->map)
1993 addr = node->map->map_ip(node->map, node->ip);
1994
787bef17 1995 if (print_sym) {
547a92e0 1996 printf(" ");
251f426f 1997 if (print_symoffset) {
a4eb24a4 1998 node_al.addr = addr;
a2cb3cf2
AH		 1999 node_al.map = node->map;
2000 symbol__fprintf_symname_offs(node->sym, &node_al, stdout);
251f426f
DA		 2001 } else
2002 symbol__fprintf_symname(node->sym, stdout);
610723f2 2003 }
251f426f 2004
610723f2 2005 if (print_dso) {
547a92e0 2006 printf(" (");
52deff71 2007 map__fprintf_dsoname(node->map, stdout);
547a92e0 2008 printf(")");
787bef17 2009 }
b0b35f01 2010
cc8fae1d
AH		 2011 if (print_srcline)
2012 map__fprintf_srcline(node->map, addr, "\n ",
2013 stdout);
2014
b0b35f01
DA		 2015 if (!print_oneline)
2016 printf("\n");
c0230b2b 2017
307cbb92 2018 stack_depth--;
d2ff1b14
DA		 2019next:
2020 callchain_cursor_advance(&callchain_cursor);
c0230b2b
DA		 2021 }
2022
2023 } else {
a2cb3cf2 2024 if (al->sym && al->sym->ignore)
d2ff1b14
DA		 2025 return;
2026
a6ffaf91
DA		 2027 if (print_ip)
2028 printf("%16" PRIx64, sample->ip);
2029
787bef17 2030 if (print_sym) {
547a92e0 2031 printf(" ");
a978f2ab 2032 if (print_symoffset)
a2cb3cf2 2033 symbol__fprintf_symname_offs(al->sym, al,
a978f2ab
AN		 2034 stdout);
2035 else
a2cb3cf2 2036 symbol__fprintf_symname(al->sym, stdout);
610723f2
DA		 2037 }
2038
2039 if (print_dso) {
547a92e0 2040 printf(" (");
a2cb3cf2 2041 map__fprintf_dsoname(al->map, stdout);
547a92e0 2042 printf(")");
787bef17 2043 }
cc8fae1d
AH		 2044
2045 if (print_srcline)
2046 map__fprintf_srcline(al->map, al->addr, "\n ", stdout);
c0230b2b
DA		 2047 }
2048}
5d67be97
AB		 2049
2050int perf_session__cpu_bitmap(struct perf_session *session,
2051 const char *cpu_list, unsigned long *cpu_bitmap)
2052{
8bac41cb 2053 int i, err = -1;
5d67be97
AB		 2054 struct cpu_map *map;
2055
2056 for (i = 0; i < PERF_TYPE_MAX; ++i) {
2057 struct perf_evsel *evsel;
2058
2059 evsel = perf_session__find_first_evtype(session, i);
2060 if (!evsel)
2061 continue;
2062
2063 if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) {
2064 pr_err("File does not contain CPU events. "
2065 "Remove -c option to proceed.\n");
2066 return -1;
2067 }
2068 }
2069
2070 map = cpu_map__new(cpu_list);
47fbe53b
DA		 2071 if (map == NULL) {
2072 pr_err("Invalid cpu_list\n");
2073 return -1;
2074 }
5d67be97
AB		 2075
2076 for (i = 0; i < map->nr; i++) {
2077 int cpu = map->map[i];
2078
2079 if (cpu >= MAX_NR_CPUS) {
2080 pr_err("Requested CPU %d too large. "
2081 "Consider raising MAX_NR_CPUS\n", cpu);
8bac41cb 2082 goto out_delete_map;
5d67be97
AB		 2083 }
2084
2085 set_bit(cpu, cpu_bitmap);
2086 }
2087
8bac41cb
SF		 2088 err = 0;
2089
2090out_delete_map:
f30a79b0 2091 cpu_map__put(map);
8bac41cb 2092 return err;
5d67be97 2093}
fbe96f29
SE		 2094
2095void perf_session__fprintf_info(struct perf_session *session, FILE *fp,
2096 bool full)
2097{
2098 struct stat st;
c5765ece 2099 int fd, ret;
fbe96f29
SE		 2100
2101 if (session == NULL || fp == NULL)
2102 return;
2103
c5765ece
MI		 2104 fd = perf_data_file__fd(session->file);
2105
cc9784bd 2106 ret = fstat(fd, &st);
fbe96f29
SE		 2107 if (ret == -1)
2108 return;
2109
2110 fprintf(fp, "# ========\n");
2111 fprintf(fp, "# captured on: %s", ctime(&st.st_ctime));
2112 perf_header__fprintf_info(session, fp, full);
2113 fprintf(fp, "# ========\n#\n");
2114}
da378962
ACM		 2115
2116
2117int __perf_session__set_tracepoints_handlers(struct perf_session *session,
2118 const struct perf_evsel_str_handler *assocs,
2119 size_t nr_assocs)
2120{
da378962 2121 struct perf_evsel *evsel;
da378962
ACM		 2122 size_t i;
2123 int err;
2124
2125 for (i = 0; i < nr_assocs; i++) {
ccf53eac
ACM		 2126 /*
2127 * Adding a handler for an event not in the session,
2128 * just ignore it.
2129 */
2130 evsel = perf_evlist__find_tracepoint_by_name(session->evlist, assocs[i].name);
da378962 2131 if (evsel == NULL)
ccf53eac 2132 continue;
da378962
ACM		 2133
2134 err = -EEXIST;
744a9719 2135 if (evsel->handler != NULL)
ccf53eac 2136 goto out;
744a9719 2137 evsel->handler = assocs[i].handler;
da378962
ACM		 2138 }
2139
2140 err = 0;
2141out:
2142 return err;
da378962 2143}
3c659eed
AH		 2144
2145int perf_event__process_id_index(struct perf_tool *tool __maybe_unused,
2146 union perf_event *event,
2147 struct perf_session *session)
2148{
2149 struct perf_evlist *evlist = session->evlist;
2150 struct id_index_event *ie = &event->id_index;
2151 size_t i, nr, max_nr;
2152
2153 max_nr = (ie->header.size - sizeof(struct id_index_event)) /
2154 sizeof(struct id_index_entry);
2155 nr = ie->nr;
2156 if (nr > max_nr)
2157 return -EINVAL;
2158
2159 if (dump_trace)
2160 fprintf(stdout, " nr: %zu\n", nr);
2161
2162 for (i = 0; i < nr; i++) {
2163 struct id_index_entry *e = &ie->entries[i];
2164 struct perf_sample_id *sid;
2165
2166 if (dump_trace) {
2167 fprintf(stdout, " ... id: %"PRIu64, e->id);
2168 fprintf(stdout, " idx: %"PRIu64, e->idx);
2169 fprintf(stdout, " cpu: %"PRId64, e->cpu);
2170 fprintf(stdout, " tid: %"PRId64"\n", e->tid);
2171 }
2172
2173 sid = perf_evlist__id2sid(evlist, e->id);
2174 if (!sid)
2175 return -ENOENT;
2176 sid->idx = e->idx;
2177 sid->cpu = e->cpu;
2178 sid->tid = e->tid;
2179 }
2180 return 0;
2181}
2182
2183int perf_event__synthesize_id_index(struct perf_tool *tool,
2184 perf_event__handler_t process,
2185 struct perf_evlist *evlist,
2186 struct machine *machine)
2187{
2188 union perf_event *ev;
2189 struct perf_evsel *evsel;
2190 size_t nr = 0, i = 0, sz, max_nr, n;
2191 int err;
2192
2193 pr_debug2("Synthesizing id index\n");
2194
2195 max_nr = (UINT16_MAX - sizeof(struct id_index_event)) /
2196 sizeof(struct id_index_entry);
2197
cba9b847 2198 evlist__for_each(evlist, evsel)
3c659eed
AH		 2199 nr += evsel->ids;
2200
2201 n = nr > max_nr ? max_nr : nr;
2202 sz = sizeof(struct id_index_event) + n * sizeof(struct id_index_entry);
2203 ev = zalloc(sz);
2204 if (!ev)
2205 return -ENOMEM;
2206
2207 ev->id_index.header.type = PERF_RECORD_ID_INDEX;
2208 ev->id_index.header.size = sz;
2209 ev->id_index.nr = n;
2210
cba9b847 2211 evlist__for_each(evlist, evsel) {
3c659eed
AH		 2212 u32 j;
2213
2214 for (j = 0; j < evsel->ids; j++) {
2215 struct id_index_entry *e;
2216 struct perf_sample_id *sid;
2217
2218 if (i >= n) {
2219 err = process(tool, ev, NULL, machine);
2220 if (err)
2221 goto out_err;
2222 nr -= n;
2223 i = 0;
2224 }
2225
2226 e = &ev->id_index.entries[i++];
2227
2228 e->id = evsel->id[j];
2229
2230 sid = perf_evlist__id2sid(evlist, e->id);
2231 if (!sid) {
2232 free(ev);
2233 return -ENOENT;
2234 }
2235
2236 e->idx = sid->idx;
2237 e->cpu = sid->cpu;
2238 e->tid = sid->tid;
2239 }
2240 }
2241
2242 sz = sizeof(struct id_index_event) + nr * sizeof(struct id_index_entry);
2243 ev->id_index.header.size = sz;
2244 ev->id_index.nr = nr;
2245
2246 err = process(tool, ev, NULL, machine);
2247out_err:
2248 free(ev);
2249
2250 return err;
2251}
Linux kernel - Deliverables
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