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perf record: Fix documentation for a inexistent option '-l'
[linux-2.6-block.git] / tools / perf / util / session.c
CommitLineData
a43783ae 1#include <errno.h>
fd20e811 2#include <inttypes.h>
94c744b6 3#include <linux/kernel.h>
4e319027 4#include <traceevent/event-parse.h>
05a1f47e 5#include <api/fs/fs.h>
94c744b6 6
ba21594c 7#include <byteswap.h>
94c744b6
ACM		 8#include <unistd.h>
9#include <sys/types.h>
a41794cd 10#include <sys/mman.h>
94c744b6 11
e248de33
ACM		 12#include "evlist.h"
13#include "evsel.h"
98521b38 14#include "memswap.h"
94c744b6 15#include "session.h"
45694aa7 16#include "tool.h"
a328626b 17#include "sort.h"
94c744b6 18#include "util.h"
5d67be97 19#include "cpumap.h"
0f6a3015 20#include "perf_regs.h"
b0a45203 21#include "asm/bug.h"
c446870d 22#include "auxtrace.h"
e7ff8920 23#include "thread.h"
a5499b37 24#include "thread-stack.h"
2d2aea6a 25#include "stat.h"
94c744b6 26
c446870d
AH		 27static int perf_session__deliver_event(struct perf_session *session,
28 union perf_event *event,
29 struct perf_sample *sample,
30 struct perf_tool *tool,
31 u64 file_offset);
d10eb1eb 32
316c7136 33static int perf_session__open(struct perf_session *session)
94c744b6 34{
316c7136 35 struct perf_data_file *file = session->file;
8dc58101 36
316c7136 37 if (perf_session__read_header(session) < 0) {
e87b4911 38 pr_err("incompatible file format (rerun with -v to learn more)\n");
6a4d98d7 39 return -1;
94c744b6
ACM		 40 }
41
cc9784bd
JO		 42 if (perf_data_file__is_pipe(file))
43 return 0;
44
3ba78bd0
JO		 45 if (perf_header__has_feat(&session->header, HEADER_STAT))
46 return 0;
47
316c7136 48 if (!perf_evlist__valid_sample_type(session->evlist)) {
e87b4911 49 pr_err("non matching sample_type\n");
6a4d98d7 50 return -1;
c2a70653
ACM		 51 }
52
316c7136 53 if (!perf_evlist__valid_sample_id_all(session->evlist)) {
e87b4911 54 pr_err("non matching sample_id_all\n");
6a4d98d7 55 return -1;
c2a70653
ACM		 56 }
57
316c7136 58 if (!perf_evlist__valid_read_format(session->evlist)) {
e87b4911 59 pr_err("non matching read_format\n");
6a4d98d7 60 return -1;
9ede473c
JO		 61 }
62
94c744b6 63 return 0;
94c744b6
ACM		 64}
65
7b56cce2 66void perf_session__set_id_hdr_size(struct perf_session *session)
9c90a61c 67{
7b56cce2
ACM		 68 u16 id_hdr_size = perf_evlist__id_hdr_size(session->evlist);
69
7b56cce2 70 machines__set_id_hdr_size(&session->machines, id_hdr_size);
9c90a61c
ACM		 71}
72
316c7136 73int perf_session__create_kernel_maps(struct perf_session *session)
a1645ce1 74{
316c7136 75 int ret = machine__create_kernel_maps(&session->machines.host);
a1645ce1 76
a1645ce1 77 if (ret >= 0)
316c7136 78 ret = machines__create_guest_kernel_maps(&session->machines);
a1645ce1
ZY		 79 return ret;
80}
81
316c7136 82static void perf_session__destroy_kernel_maps(struct perf_session *session)
076c6e45 83{
316c7136 84 machines__destroy_kernel_maps(&session->machines);
076c6e45
ACM		 85}
86
cfe1c414
AH		 87static bool perf_session__has_comm_exec(struct perf_session *session)
88{
89 struct perf_evsel *evsel;
90
e5cadb93 91 evlist__for_each_entry(session->evlist, evsel) {
cfe1c414
AH		 92 if (evsel->attr.comm_exec)
93 return true;
94 }
95
96 return false;
97}
98
99static void perf_session__set_comm_exec(struct perf_session *session)
100{
101 bool comm_exec = perf_session__has_comm_exec(session);
102
103 machines__set_comm_exec(&session->machines, comm_exec);
104}
105
d10eb1eb 106static int ordered_events__deliver_event(struct ordered_events *oe,
9870d780 107 struct ordered_event *event)
d10eb1eb 108{
9870d780
ACM		 109 struct perf_sample sample;
110 struct perf_session *session = container_of(oe, struct perf_session,
111 ordered_events);
112 int ret = perf_evlist__parse_sample(session->evlist, event->event, &sample);
113
114 if (ret) {
115 pr_err("Can't parse sample, err = %d\n", ret);
116 return ret;
117 }
118
c446870d
AH		 119 return perf_session__deliver_event(session, event->event, &sample,
120 session->tool, event->file_offset);
d10eb1eb
ACM		 121}
122
f5fc1412
JO		 123struct perf_session *perf_session__new(struct perf_data_file *file,
124 bool repipe, struct perf_tool *tool)
94c744b6 125{
316c7136 126 struct perf_session *session = zalloc(sizeof(*session));
efad1415 127
316c7136 128 if (!session)
94c744b6
ACM		 129 goto out;
130
316c7136 131 session->repipe = repipe;
9870d780 132 session->tool = tool;
99fa2984 133 INIT_LIST_HEAD(&session->auxtrace_index);
316c7136 134 machines__init(&session->machines);
9870d780 135 ordered_events__init(&session->ordered_events, ordered_events__deliver_event);
94c744b6 136
6a4d98d7
JO		 137 if (file) {
138 if (perf_data_file__open(file))
64abebf7 139 goto out_delete;
6a4d98d7 140
316c7136 141 session->file = file;
6a4d98d7
JO		 142
143 if (perf_data_file__is_read(file)) {
316c7136 144 if (perf_session__open(session) < 0)
6a4d98d7
JO		 145 goto out_close;
146
0973ad97
DCC		 147 /*
148 * set session attributes that are present in perf.data
149 * but not in pipe-mode.
150 */
151 if (!file->is_pipe) {
152 perf_session__set_id_hdr_size(session);
153 perf_session__set_comm_exec(session);
154 }
6a4d98d7 155 }
4cde998d
ACM		 156 } else {
157 session->machines.host.env = &perf_env;
6a4d98d7
JO		 158 }
159
160 if (!file || perf_data_file__is_write(file)) {
64abebf7
ACM		 161 /*
162 * In O_RDONLY mode this will be performed when reading the
8115d60c 163 * kernel MMAP event, in perf_event__process_mmap().
64abebf7 164 */
316c7136 165 if (perf_session__create_kernel_maps(session) < 0)
a5c2a4c9 166 pr_warning("Cannot read kernel map\n");
64abebf7 167 }
d549c769 168
0973ad97
DCC		 169 /*
170 * In pipe-mode, evlist is empty until PERF_RECORD_HEADER_ATTR is
171 * processed, so perf_evlist__sample_id_all is not meaningful here.
172 */
173 if ((!file || !file->is_pipe) && tool && tool->ordering_requires_timestamps &&
0a8cb85c 174 tool->ordered_events && !perf_evlist__sample_id_all(session->evlist)) {
21ef97f0 175 dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n");
0a8cb85c 176 tool->ordered_events = false;
d10eb1eb 177 }
21ef97f0 178
316c7136 179 return session;
6a4d98d7
JO		 180
181 out_close:
182 perf_data_file__close(file);
183 out_delete:
316c7136 184 perf_session__delete(session);
6a4d98d7 185 out:
4aa65636 186 return NULL;
94c744b6
ACM		 187}
188
b424eba2
ACM		 189static void perf_session__delete_threads(struct perf_session *session)
190{
876650e6 191 machine__delete_threads(&session->machines.host);
b424eba2
ACM		 192}
193
316c7136 194void perf_session__delete(struct perf_session *session)
94c744b6 195{
e1446551
ACM		 196 if (session == NULL)
197 return;
c446870d 198 auxtrace__free(session);
99fa2984 199 auxtrace_index__free(&session->auxtrace_index);
316c7136 200 perf_session__destroy_kernel_maps(session);
316c7136 201 perf_session__delete_threads(session);
f0ce888c 202 perf_env__exit(&session->header.env);
316c7136
ACM		 203 machines__exit(&session->machines);
204 if (session->file)
205 perf_data_file__close(session->file);
206 free(session);
94c744b6 207}
a328626b 208
47c3d109
AH		 209static int process_event_synth_tracing_data_stub(struct perf_tool *tool
210 __maybe_unused,
211 union perf_event *event
1d037ca1
IT		 212 __maybe_unused,
213 struct perf_session *session
214 __maybe_unused)
d20deb64
ACM		 215{
216 dump_printf(": unhandled!\n");
217 return 0;
218}
219
47c3d109
AH		 220static int process_event_synth_attr_stub(struct perf_tool *tool __maybe_unused,
221 union perf_event *event __maybe_unused,
1d037ca1
IT		 222 struct perf_evlist **pevlist
223 __maybe_unused)
10d0f086
ACM		 224{
225 dump_printf(": unhandled!\n");
226 return 0;
227}
228
ffe77725
JO		 229static int process_event_synth_event_update_stub(struct perf_tool *tool __maybe_unused,
230 union perf_event *event __maybe_unused,
231 struct perf_evlist **pevlist
232 __maybe_unused)
233{
2d2aea6a
JO		 234 if (dump_trace)
235 perf_event__fprintf_event_update(event, stdout);
236
ffe77725
JO		 237 dump_printf(": unhandled!\n");
238 return 0;
239}
240
1d037ca1
IT		 241static int process_event_sample_stub(struct perf_tool *tool __maybe_unused,
242 union perf_event *event __maybe_unused,
243 struct perf_sample *sample __maybe_unused,
244 struct perf_evsel *evsel __maybe_unused,
245 struct machine *machine __maybe_unused)
9e69c210
ACM		 246{
247 dump_printf(": unhandled!\n");
248 return 0;
249}
250
1d037ca1
IT		 251static int process_event_stub(struct perf_tool *tool __maybe_unused,
252 union perf_event *event __maybe_unused,
253 struct perf_sample *sample __maybe_unused,
254 struct machine *machine __maybe_unused)
06aae590
ACM		 255{
256 dump_printf(": unhandled!\n");
257 return 0;
258}
259
1d037ca1
IT		 260static int process_finished_round_stub(struct perf_tool *tool __maybe_unused,
261 union perf_event *event __maybe_unused,
d704ebda 262 struct ordered_events *oe __maybe_unused)
743eb868
ACM		 263{
264 dump_printf(": unhandled!\n");
265 return 0;
266}
267
45694aa7 268static int process_finished_round(struct perf_tool *tool,
d20deb64 269 union perf_event *event,
d704ebda 270 struct ordered_events *oe);
d6b17beb 271
a16ac023
AH		 272static int skipn(int fd, off_t n)
273{
274 char buf[4096];
275 ssize_t ret;
276
277 while (n > 0) {
278 ret = read(fd, buf, min(n, (off_t)sizeof(buf)));
279 if (ret <= 0)
280 return ret;
281 n -= ret;
282 }
283
284 return 0;
285}
286
287static s64 process_event_auxtrace_stub(struct perf_tool *tool __maybe_unused,
288 union perf_event *event,
289 struct perf_session *session
290 __maybe_unused)
291{
292 dump_printf(": unhandled!\n");
293 if (perf_data_file__is_pipe(session->file))
294 skipn(perf_data_file__fd(session->file), event->auxtrace.size);
295 return event->auxtrace.size;
296}
297
5fb0ac16
AH		 298static int process_event_op2_stub(struct perf_tool *tool __maybe_unused,
299 union perf_event *event __maybe_unused,
300 struct perf_session *session __maybe_unused)
e9bf54d2
AH		 301{
302 dump_printf(": unhandled!\n");
303 return 0;
304}
305
5f3339d2
JO		 306
307static
308int process_event_thread_map_stub(struct perf_tool *tool __maybe_unused,
309 union perf_event *event __maybe_unused,
310 struct perf_session *session __maybe_unused)
311{
2d2aea6a
JO		 312 if (dump_trace)
313 perf_event__fprintf_thread_map(event, stdout);
314
5f3339d2
JO		 315 dump_printf(": unhandled!\n");
316 return 0;
317}
318
6640b6c2
JO		 319static
320int process_event_cpu_map_stub(struct perf_tool *tool __maybe_unused,
321 union perf_event *event __maybe_unused,
322 struct perf_session *session __maybe_unused)
323{
2d2aea6a
JO		 324 if (dump_trace)
325 perf_event__fprintf_cpu_map(event, stdout);
326
6640b6c2
JO		 327 dump_printf(": unhandled!\n");
328 return 0;
329}
330
374fb9e3
JO		 331static
332int process_event_stat_config_stub(struct perf_tool *tool __maybe_unused,
333 union perf_event *event __maybe_unused,
334 struct perf_session *session __maybe_unused)
335{
2d2aea6a
JO		 336 if (dump_trace)
337 perf_event__fprintf_stat_config(event, stdout);
338
374fb9e3
JO		 339 dump_printf(": unhandled!\n");
340 return 0;
341}
342
d80518c9
JO		 343static int process_stat_stub(struct perf_tool *tool __maybe_unused,
344 union perf_event *event __maybe_unused,
345 struct perf_session *perf_session
346 __maybe_unused)
347{
2d2aea6a
JO		 348 if (dump_trace)
349 perf_event__fprintf_stat(event, stdout);
350
d80518c9
JO		 351 dump_printf(": unhandled!\n");
352 return 0;
353}
354
2d8f0f18
JO		 355static int process_stat_round_stub(struct perf_tool *tool __maybe_unused,
356 union perf_event *event __maybe_unused,
357 struct perf_session *perf_session
358 __maybe_unused)
359{
2d2aea6a
JO		 360 if (dump_trace)
361 perf_event__fprintf_stat_round(event, stdout);
362
2d8f0f18
JO		 363 dump_printf(": unhandled!\n");
364 return 0;
365}
366
9c501402 367void perf_tool__fill_defaults(struct perf_tool *tool)
06aae590 368{
45694aa7
ACM		 369 if (tool->sample == NULL)
370 tool->sample = process_event_sample_stub;
371 if (tool->mmap == NULL)
372 tool->mmap = process_event_stub;
6adb0b0a
DA		 373 if (tool->mmap2 == NULL)
374 tool->mmap2 = process_event_stub;
45694aa7
ACM		 375 if (tool->comm == NULL)
376 tool->comm = process_event_stub;
377 if (tool->fork == NULL)
378 tool->fork = process_event_stub;
379 if (tool->exit == NULL)
380 tool->exit = process_event_stub;
381 if (tool->lost == NULL)
382 tool->lost = perf_event__process_lost;
c4937a91
KL		 383 if (tool->lost_samples == NULL)
384 tool->lost_samples = perf_event__process_lost_samples;
4a96f7a0
AH		 385 if (tool->aux == NULL)
386 tool->aux = perf_event__process_aux;
0ad21f68
AH		 387 if (tool->itrace_start == NULL)
388 tool->itrace_start = perf_event__process_itrace_start;
0286039f
AH		 389 if (tool->context_switch == NULL)
390 tool->context_switch = perf_event__process_switch;
45694aa7
ACM		 391 if (tool->read == NULL)
392 tool->read = process_event_sample_stub;
393 if (tool->throttle == NULL)
394 tool->throttle = process_event_stub;
395 if (tool->unthrottle == NULL)
396 tool->unthrottle = process_event_stub;
397 if (tool->attr == NULL)
398 tool->attr = process_event_synth_attr_stub;
ffe77725
JO		 399 if (tool->event_update == NULL)
400 tool->event_update = process_event_synth_event_update_stub;
45694aa7
ACM		 401 if (tool->tracing_data == NULL)
402 tool->tracing_data = process_event_synth_tracing_data_stub;
403 if (tool->build_id == NULL)
5fb0ac16 404 tool->build_id = process_event_op2_stub;
45694aa7 405 if (tool->finished_round == NULL) {
0a8cb85c 406 if (tool->ordered_events)
45694aa7 407 tool->finished_round = process_finished_round;
d6b17beb 408 else
45694aa7 409 tool->finished_round = process_finished_round_stub;
d6b17beb 410 }
3c659eed 411 if (tool->id_index == NULL)
5fb0ac16 412 tool->id_index = process_event_op2_stub;
a16ac023 413 if (tool->auxtrace_info == NULL)
5fb0ac16 414 tool->auxtrace_info = process_event_op2_stub;
a16ac023
AH		 415 if (tool->auxtrace == NULL)
416 tool->auxtrace = process_event_auxtrace_stub;
e9bf54d2 417 if (tool->auxtrace_error == NULL)
5fb0ac16 418 tool->auxtrace_error = process_event_op2_stub;
5f3339d2
JO		 419 if (tool->thread_map == NULL)
420 tool->thread_map = process_event_thread_map_stub;
6640b6c2
JO		 421 if (tool->cpu_map == NULL)
422 tool->cpu_map = process_event_cpu_map_stub;
374fb9e3
JO		 423 if (tool->stat_config == NULL)
424 tool->stat_config = process_event_stat_config_stub;
d80518c9
JO		 425 if (tool->stat == NULL)
426 tool->stat = process_stat_stub;
2d8f0f18
JO		 427 if (tool->stat_round == NULL)
428 tool->stat_round = process_stat_round_stub;
46bc29b9
AH		 429 if (tool->time_conv == NULL)
430 tool->time_conv = process_event_op2_stub;
e9def1b2
DCC		 431 if (tool->feature == NULL)
432 tool->feature = process_event_op2_stub;
06aae590 433}
48000a1a 434
268fb20f
JO		 435static void swap_sample_id_all(union perf_event *event, void *data)
436{
437 void *end = (void *) event + event->header.size;
438 int size = end - data;
439
440 BUG_ON(size % sizeof(u64));
441 mem_bswap_64(data, size);
442}
443
444static void perf_event__all64_swap(union perf_event *event,
1d037ca1 445 bool sample_id_all __maybe_unused)
ba21594c 446{
8115d60c
ACM		 447 struct perf_event_header *hdr = &event->header;
448 mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr));
ba21594c
ACM		 449}
450
268fb20f 451static void perf_event__comm_swap(union perf_event *event, bool sample_id_all)
ba21594c 452{
8115d60c
ACM		 453 event->comm.pid = bswap_32(event->comm.pid);
454 event->comm.tid = bswap_32(event->comm.tid);
268fb20f
JO		 455
456 if (sample_id_all) {
457 void *data = &event->comm.comm;
458
9ac3e487 459 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
268fb20f
JO		 460 swap_sample_id_all(event, data);
461 }
ba21594c
ACM		 462}
463
268fb20f
JO		 464static void perf_event__mmap_swap(union perf_event *event,
465 bool sample_id_all)
ba21594c 466{
8115d60c
ACM		 467 event->mmap.pid = bswap_32(event->mmap.pid);
468 event->mmap.tid = bswap_32(event->mmap.tid);
469 event->mmap.start = bswap_64(event->mmap.start);
470 event->mmap.len = bswap_64(event->mmap.len);
471 event->mmap.pgoff = bswap_64(event->mmap.pgoff);
268fb20f
JO		 472
473 if (sample_id_all) {
474 void *data = &event->mmap.filename;
475
9ac3e487 476 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
268fb20f
JO		 477 swap_sample_id_all(event, data);
478 }
ba21594c
ACM		 479}
480
5c5e854b
SE		 481static void perf_event__mmap2_swap(union perf_event *event,
482 bool sample_id_all)
483{
484 event->mmap2.pid = bswap_32(event->mmap2.pid);
485 event->mmap2.tid = bswap_32(event->mmap2.tid);
486 event->mmap2.start = bswap_64(event->mmap2.start);
487 event->mmap2.len = bswap_64(event->mmap2.len);
488 event->mmap2.pgoff = bswap_64(event->mmap2.pgoff);
489 event->mmap2.maj = bswap_32(event->mmap2.maj);
490 event->mmap2.min = bswap_32(event->mmap2.min);
491 event->mmap2.ino = bswap_64(event->mmap2.ino);
492
493 if (sample_id_all) {
494 void *data = &event->mmap2.filename;
495
496 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
497 swap_sample_id_all(event, data);
498 }
499}
268fb20f 500static void perf_event__task_swap(union perf_event *event, bool sample_id_all)
ba21594c 501{
8115d60c
ACM		 502 event->fork.pid = bswap_32(event->fork.pid);
503 event->fork.tid = bswap_32(event->fork.tid);
504 event->fork.ppid = bswap_32(event->fork.ppid);
505 event->fork.ptid = bswap_32(event->fork.ptid);
506 event->fork.time = bswap_64(event->fork.time);
268fb20f
JO		 507
508 if (sample_id_all)
509 swap_sample_id_all(event, &event->fork + 1);
ba21594c
ACM		 510}
511
268fb20f 512static void perf_event__read_swap(union perf_event *event, bool sample_id_all)
ba21594c 513{
8115d60c
ACM		 514 event->read.pid = bswap_32(event->read.pid);
515 event->read.tid = bswap_32(event->read.tid);
516 event->read.value = bswap_64(event->read.value);
517 event->read.time_enabled = bswap_64(event->read.time_enabled);
518 event->read.time_running = bswap_64(event->read.time_running);
519 event->read.id = bswap_64(event->read.id);
268fb20f
JO		 520
521 if (sample_id_all)
522 swap_sample_id_all(event, &event->read + 1);
ba21594c
ACM		 523}
524
4a96f7a0
AH		 525static void perf_event__aux_swap(union perf_event *event, bool sample_id_all)
526{
527 event->aux.aux_offset = bswap_64(event->aux.aux_offset);
528 event->aux.aux_size = bswap_64(event->aux.aux_size);
529 event->aux.flags = bswap_64(event->aux.flags);
530
531 if (sample_id_all)
532 swap_sample_id_all(event, &event->aux + 1);
533}
534
0ad21f68
AH		 535static void perf_event__itrace_start_swap(union perf_event *event,
536 bool sample_id_all)
537{
538 event->itrace_start.pid = bswap_32(event->itrace_start.pid);
539 event->itrace_start.tid = bswap_32(event->itrace_start.tid);
540
541 if (sample_id_all)
542 swap_sample_id_all(event, &event->itrace_start + 1);
543}
544
0286039f
AH		 545static void perf_event__switch_swap(union perf_event *event, bool sample_id_all)
546{
547 if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE) {
548 event->context_switch.next_prev_pid =
549 bswap_32(event->context_switch.next_prev_pid);
550 event->context_switch.next_prev_tid =
551 bswap_32(event->context_switch.next_prev_tid);
552 }
553
554 if (sample_id_all)
555 swap_sample_id_all(event, &event->context_switch + 1);
556}
557
dd96c46b
JO		 558static void perf_event__throttle_swap(union perf_event *event,
559 bool sample_id_all)
560{
561 event->throttle.time = bswap_64(event->throttle.time);
562 event->throttle.id = bswap_64(event->throttle.id);
563 event->throttle.stream_id = bswap_64(event->throttle.stream_id);
564
565 if (sample_id_all)
566 swap_sample_id_all(event, &event->throttle + 1);
567}
568
e108c66e
JO		 569static u8 revbyte(u8 b)
570{
571 int rev = (b >> 4) | ((b & 0xf) << 4);
572 rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2);
573 rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1);
574 return (u8) rev;
575}
576
577/*
578 * XXX this is hack in attempt to carry flags bitfield
bd1a0be5 579 * through endian village. ABI says:
e108c66e
JO		 580 *
581 * Bit-fields are allocated from right to left (least to most significant)
582 * on little-endian implementations and from left to right (most to least
583 * significant) on big-endian implementations.
584 *
585 * The above seems to be byte specific, so we need to reverse each
586 * byte of the bitfield. 'Internet' also says this might be implementation
587 * specific and we probably need proper fix and carry perf_event_attr
588 * bitfield flags in separate data file FEAT_ section. Thought this seems
589 * to work for now.
590 */
591static void swap_bitfield(u8 *p, unsigned len)
592{
593 unsigned i;
594
595 for (i = 0; i < len; i++) {
596 *p = revbyte(*p);
597 p++;
598 }
599}
600
eda3913b
DA		 601/* exported for swapping attributes in file header */
602void perf_event__attr_swap(struct perf_event_attr *attr)
603{
604 attr->type = bswap_32(attr->type);
605 attr->size = bswap_32(attr->size);
b30b6172
WN		 606
607#define bswap_safe(f, n) \
608 (attr->size > (offsetof(struct perf_event_attr, f) + \
609 sizeof(attr->f) * (n)))
610#define bswap_field(f, sz) \
611do { \
612 if (bswap_safe(f, 0)) \
613 attr->f = bswap_##sz(attr->f); \
614} while(0)
792d48b4 615#define bswap_field_16(f) bswap_field(f, 16)
b30b6172
WN		 616#define bswap_field_32(f) bswap_field(f, 32)
617#define bswap_field_64(f) bswap_field(f, 64)
618
619 bswap_field_64(config);
620 bswap_field_64(sample_period);
621 bswap_field_64(sample_type);
622 bswap_field_64(read_format);
623 bswap_field_32(wakeup_events);
624 bswap_field_32(bp_type);
625 bswap_field_64(bp_addr);
626 bswap_field_64(bp_len);
627 bswap_field_64(branch_sample_type);
628 bswap_field_64(sample_regs_user);
629 bswap_field_32(sample_stack_user);
630 bswap_field_32(aux_watermark);
792d48b4 631 bswap_field_16(sample_max_stack);
b30b6172
WN		 632
633 /*
634 * After read_format are bitfields. Check read_format because
635 * we are unable to use offsetof on bitfield.
636 */
637 if (bswap_safe(read_format, 1))
638 swap_bitfield((u8 *) (&attr->read_format + 1),
639 sizeof(u64));
640#undef bswap_field_64
641#undef bswap_field_32
642#undef bswap_field
643#undef bswap_safe
eda3913b
DA		 644}
645
268fb20f 646static void perf_event__hdr_attr_swap(union perf_event *event,
1d037ca1 647 bool sample_id_all __maybe_unused)
2c46dbb5
TZ		 648{
649 size_t size;
650
eda3913b 651 perf_event__attr_swap(&event->attr.attr);
2c46dbb5 652
8115d60c
ACM		 653 size = event->header.size;
654 size -= (void *)&event->attr.id - (void *)event;
655 mem_bswap_64(event->attr.id, size);
2c46dbb5
TZ		 656}
657
ffe77725
JO		 658static void perf_event__event_update_swap(union perf_event *event,
659 bool sample_id_all __maybe_unused)
660{
661 event->event_update.type = bswap_64(event->event_update.type);
662 event->event_update.id = bswap_64(event->event_update.id);
663}
664
268fb20f 665static void perf_event__event_type_swap(union perf_event *event,
1d037ca1 666 bool sample_id_all __maybe_unused)
cd19a035 667{
8115d60c
ACM		 668 event->event_type.event_type.event_id =
669 bswap_64(event->event_type.event_type.event_id);
cd19a035
TZ		 670}
671
268fb20f 672static void perf_event__tracing_data_swap(union perf_event *event,
1d037ca1 673 bool sample_id_all __maybe_unused)
9215545e 674{
8115d60c 675 event->tracing_data.size = bswap_32(event->tracing_data.size);
9215545e
TZ		 676}
677
a16ac023
AH		 678static void perf_event__auxtrace_info_swap(union perf_event *event,
679 bool sample_id_all __maybe_unused)
680{
681 size_t size;
682
683 event->auxtrace_info.type = bswap_32(event->auxtrace_info.type);
684
685 size = event->header.size;
686 size -= (void *)&event->auxtrace_info.priv - (void *)event;
687 mem_bswap_64(event->auxtrace_info.priv, size);
688}
689
690static void perf_event__auxtrace_swap(union perf_event *event,
691 bool sample_id_all __maybe_unused)
692{
693 event->auxtrace.size = bswap_64(event->auxtrace.size);
694 event->auxtrace.offset = bswap_64(event->auxtrace.offset);
695 event->auxtrace.reference = bswap_64(event->auxtrace.reference);
696 event->auxtrace.idx = bswap_32(event->auxtrace.idx);
697 event->auxtrace.tid = bswap_32(event->auxtrace.tid);
698 event->auxtrace.cpu = bswap_32(event->auxtrace.cpu);
699}
700
e9bf54d2
AH		 701static void perf_event__auxtrace_error_swap(union perf_event *event,
702 bool sample_id_all __maybe_unused)
703{
704 event->auxtrace_error.type = bswap_32(event->auxtrace_error.type);
705 event->auxtrace_error.code = bswap_32(event->auxtrace_error.code);
706 event->auxtrace_error.cpu = bswap_32(event->auxtrace_error.cpu);
707 event->auxtrace_error.pid = bswap_32(event->auxtrace_error.pid);
708 event->auxtrace_error.tid = bswap_32(event->auxtrace_error.tid);
709 event->auxtrace_error.ip = bswap_64(event->auxtrace_error.ip);
710}
711
5f3339d2
JO		 712static void perf_event__thread_map_swap(union perf_event *event,
713 bool sample_id_all __maybe_unused)
714{
715 unsigned i;
716
717 event->thread_map.nr = bswap_64(event->thread_map.nr);
718
719 for (i = 0; i < event->thread_map.nr; i++)
720 event->thread_map.entries[i].pid = bswap_64(event->thread_map.entries[i].pid);
721}
722
6640b6c2
JO		 723static void perf_event__cpu_map_swap(union perf_event *event,
724 bool sample_id_all __maybe_unused)
725{
726 struct cpu_map_data *data = &event->cpu_map.data;
727 struct cpu_map_entries *cpus;
728 struct cpu_map_mask *mask;
729 unsigned i;
730
731 data->type = bswap_64(data->type);
732
733 switch (data->type) {
734 case PERF_CPU_MAP__CPUS:
735 cpus = (struct cpu_map_entries *)data->data;
736
737 cpus->nr = bswap_16(cpus->nr);
738
739 for (i = 0; i < cpus->nr; i++)
740 cpus->cpu[i] = bswap_16(cpus->cpu[i]);
741 break;
742 case PERF_CPU_MAP__MASK:
743 mask = (struct cpu_map_mask *) data->data;
744
745 mask->nr = bswap_16(mask->nr);
746 mask->long_size = bswap_16(mask->long_size);
747
748 switch (mask->long_size) {
749 case 4: mem_bswap_32(&mask->mask, mask->nr); break;
750 case 8: mem_bswap_64(&mask->mask, mask->nr); break;
751 default:
752 pr_err("cpu_map swap: unsupported long size\n");
753 }
754 default:
755 break;
756 }
757}
758
374fb9e3
JO		 759static void perf_event__stat_config_swap(union perf_event *event,
760 bool sample_id_all __maybe_unused)
761{
762 u64 size;
763
764 size = event->stat_config.nr * sizeof(event->stat_config.data[0]);
765 size += 1; /* nr item itself */
766 mem_bswap_64(&event->stat_config.nr, size);
767}
768
d80518c9
JO		 769static void perf_event__stat_swap(union perf_event *event,
770 bool sample_id_all __maybe_unused)
771{
772 event->stat.id = bswap_64(event->stat.id);
773 event->stat.thread = bswap_32(event->stat.thread);
774 event->stat.cpu = bswap_32(event->stat.cpu);
775 event->stat.val = bswap_64(event->stat.val);
776 event->stat.ena = bswap_64(event->stat.ena);
777 event->stat.run = bswap_64(event->stat.run);
778}
779
2d8f0f18
JO		 780static void perf_event__stat_round_swap(union perf_event *event,
781 bool sample_id_all __maybe_unused)
782{
783 event->stat_round.type = bswap_64(event->stat_round.type);
784 event->stat_round.time = bswap_64(event->stat_round.time);
785}
786
268fb20f
JO		 787typedef void (*perf_event__swap_op)(union perf_event *event,
788 bool sample_id_all);
ba21594c 789
8115d60c
ACM		 790static perf_event__swap_op perf_event__swap_ops[] = {
791 [PERF_RECORD_MMAP] = perf_event__mmap_swap,
5c5e854b 792 [PERF_RECORD_MMAP2] = perf_event__mmap2_swap,
8115d60c
ACM		 793 [PERF_RECORD_COMM] = perf_event__comm_swap,
794 [PERF_RECORD_FORK] = perf_event__task_swap,
795 [PERF_RECORD_EXIT] = perf_event__task_swap,
796 [PERF_RECORD_LOST] = perf_event__all64_swap,
797 [PERF_RECORD_READ] = perf_event__read_swap,
dd96c46b
JO		 798 [PERF_RECORD_THROTTLE] = perf_event__throttle_swap,
799 [PERF_RECORD_UNTHROTTLE] = perf_event__throttle_swap,
8115d60c 800 [PERF_RECORD_SAMPLE] = perf_event__all64_swap,
4a96f7a0 801 [PERF_RECORD_AUX] = perf_event__aux_swap,
0ad21f68 802 [PERF_RECORD_ITRACE_START] = perf_event__itrace_start_swap,
c4937a91 803 [PERF_RECORD_LOST_SAMPLES] = perf_event__all64_swap,
0286039f
AH		 804 [PERF_RECORD_SWITCH] = perf_event__switch_swap,
805 [PERF_RECORD_SWITCH_CPU_WIDE] = perf_event__switch_swap,
eda3913b 806 [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap,
8115d60c
ACM		 807 [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap,
808 [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap,
809 [PERF_RECORD_HEADER_BUILD_ID] = NULL,
3c659eed 810 [PERF_RECORD_ID_INDEX] = perf_event__all64_swap,
a16ac023
AH		 811 [PERF_RECORD_AUXTRACE_INFO] = perf_event__auxtrace_info_swap,
812 [PERF_RECORD_AUXTRACE] = perf_event__auxtrace_swap,
e9bf54d2 813 [PERF_RECORD_AUXTRACE_ERROR] = perf_event__auxtrace_error_swap,
5f3339d2 814 [PERF_RECORD_THREAD_MAP] = perf_event__thread_map_swap,
6640b6c2 815 [PERF_RECORD_CPU_MAP] = perf_event__cpu_map_swap,
374fb9e3 816 [PERF_RECORD_STAT_CONFIG] = perf_event__stat_config_swap,
d80518c9 817 [PERF_RECORD_STAT] = perf_event__stat_swap,
2d8f0f18 818 [PERF_RECORD_STAT_ROUND] = perf_event__stat_round_swap,
ffe77725 819 [PERF_RECORD_EVENT_UPDATE] = perf_event__event_update_swap,
46bc29b9 820 [PERF_RECORD_TIME_CONV] = perf_event__all64_swap,
8115d60c 821 [PERF_RECORD_HEADER_MAX] = NULL,
ba21594c
ACM		 822};
823
d6b17beb
FW		 824/*
825 * When perf record finishes a pass on every buffers, it records this pseudo
826 * event.
827 * We record the max timestamp t found in the pass n.
828 * Assuming these timestamps are monotonic across cpus, we know that if
829 * a buffer still has events with timestamps below t, they will be all
830 * available and then read in the pass n + 1.
831 * Hence when we start to read the pass n + 2, we can safely flush every
832 * events with timestamps below t.
833 *
834 * ============ PASS n =================
835 * CPU 0 | CPU 1
836 * |
837 * cnt1 timestamps | cnt2 timestamps
838 * 1 | 2
839 * 2 | 3
840 * - | 4 <--- max recorded
841 *
842 * ============ PASS n + 1 ==============
843 * CPU 0 | CPU 1
844 * |
845 * cnt1 timestamps | cnt2 timestamps
846 * 3 | 5
847 * 4 | 6
848 * 5 | 7 <---- max recorded
849 *
850 * Flush every events below timestamp 4
851 *
852 * ============ PASS n + 2 ==============
853 * CPU 0 | CPU 1
854 * |
855 * cnt1 timestamps | cnt2 timestamps
856 * 6 | 8
857 * 7 | 9
858 * - | 10
859 *
860 * Flush every events below timestamp 7
861 * etc...
862 */
b7b61cbe 863static int process_finished_round(struct perf_tool *tool __maybe_unused,
1d037ca1 864 union perf_event *event __maybe_unused,
d704ebda 865 struct ordered_events *oe)
d6b17beb 866{
5531e162
AH		 867 if (dump_trace)
868 fprintf(stdout, "\n");
b7b61cbe 869 return ordered_events__flush(oe, OE_FLUSH__ROUND);
d6b17beb
FW		 870}
871
b7b61cbe
ACM		 872int perf_session__queue_event(struct perf_session *s, union perf_event *event,
873 struct perf_sample *sample, u64 file_offset)
c61e52ee 874{
4a6b362f 875 return ordered_events__queue(&s->ordered_events, event, sample, file_offset);
640c03ce 876}
c61e52ee 877
384b6055 878static void callchain__lbr_callstack_printf(struct perf_sample *sample)
640c03ce 879{
384b6055
KL		 880 struct ip_callchain *callchain = sample->callchain;
881 struct branch_stack *lbr_stack = sample->branch_stack;
882 u64 kernel_callchain_nr = callchain->nr;
640c03ce 883 unsigned int i;
c61e52ee 884
384b6055
KL		 885 for (i = 0; i < kernel_callchain_nr; i++) {
886 if (callchain->ips[i] == PERF_CONTEXT_USER)
887 break;
888 }
889
890 if ((i != kernel_callchain_nr) && lbr_stack->nr) {
891 u64 total_nr;
892 /*
893 * LBR callstack can only get user call chain,
894 * i is kernel call chain number,
895 * 1 is PERF_CONTEXT_USER.
896 *
897 * The user call chain is stored in LBR registers.
898 * LBR are pair registers. The caller is stored
899 * in "from" register, while the callee is stored
900 * in "to" register.
901 * For example, there is a call stack
902 * "A"->"B"->"C"->"D".
903 * The LBR registers will recorde like
904 * "C"->"D", "B"->"C", "A"->"B".
905 * So only the first "to" register and all "from"
906 * registers are needed to construct the whole stack.
907 */
908 total_nr = i + 1 + lbr_stack->nr + 1;
909 kernel_callchain_nr = i + 1;
910
911 printf("... LBR call chain: nr:%" PRIu64 "\n", total_nr);
912
913 for (i = 0; i < kernel_callchain_nr; i++)
914 printf("..... %2d: %016" PRIx64 "\n",
915 i, callchain->ips[i]);
916
917 printf("..... %2d: %016" PRIx64 "\n",
918 (int)(kernel_callchain_nr), lbr_stack->entries[0].to);
919 for (i = 0; i < lbr_stack->nr; i++)
920 printf("..... %2d: %016" PRIx64 "\n",
921 (int)(i + kernel_callchain_nr + 1), lbr_stack->entries[i].from);
922 }
923}
924
925static void callchain__printf(struct perf_evsel *evsel,
926 struct perf_sample *sample)
927{
928 unsigned int i;
929 struct ip_callchain *callchain = sample->callchain;
930
acf2abbd 931 if (perf_evsel__has_branch_callstack(evsel))
384b6055
KL		 932 callchain__lbr_callstack_printf(sample);
933
934 printf("... FP chain: nr:%" PRIu64 "\n", callchain->nr);
640c03ce 935
384b6055 936 for (i = 0; i < callchain->nr; i++)
9486aa38 937 printf("..... %2d: %016" PRIx64 "\n",
384b6055 938 i, callchain->ips[i]);
c61e52ee
FW		 939}
940
b5387528
RAV		 941static void branch_stack__printf(struct perf_sample *sample)
942{
943 uint64_t i;
944
945 printf("... branch stack: nr:%" PRIu64 "\n", sample->branch_stack->nr);
946
0e332f03
AK		 947 for (i = 0; i < sample->branch_stack->nr; i++) {
948 struct branch_entry *e = &sample->branch_stack->entries[i];
949
950 printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 " %hu cycles %s%s%s%s %x\n",
951 i, e->from, e->to,
8074bf51 952 (unsigned short)e->flags.cycles,
0e332f03
AK		 953 e->flags.mispred ? "M" : " ",
954 e->flags.predicted ? "P" : " ",
955 e->flags.abort ? "A" : " ",
956 e->flags.in_tx ? "T" : " ",
957 (unsigned)e->flags.reserved);
958 }
b5387528
RAV		 959}
960
0f6a3015
JO		 961static void regs_dump__printf(u64 mask, u64 *regs)
962{
963 unsigned rid, i = 0;
964
965 for_each_set_bit(rid, (unsigned long *) &mask, sizeof(mask) * 8) {
966 u64 val = regs[i++];
967
968 printf(".... %-5s 0x%" PRIx64 "\n",
969 perf_reg_name(rid), val);
970 }
971}
972
6a21c0b5
SE		 973static const char *regs_abi[] = {
974 [PERF_SAMPLE_REGS_ABI_NONE] = "none",
975 [PERF_SAMPLE_REGS_ABI_32] = "32-bit",
976 [PERF_SAMPLE_REGS_ABI_64] = "64-bit",
977};
978
979static inline const char *regs_dump_abi(struct regs_dump *d)
980{
981 if (d->abi > PERF_SAMPLE_REGS_ABI_64)
982 return "unknown";
983
984 return regs_abi[d->abi];
985}
986
987static void regs__printf(const char *type, struct regs_dump *regs)
988{
989 u64 mask = regs->mask;
990
991 printf("... %s regs: mask 0x%" PRIx64 " ABI %s\n",
992 type,
993 mask,
994 regs_dump_abi(regs));
995
996 regs_dump__printf(mask, regs->regs);
997}
998
352ea45a 999static void regs_user__printf(struct perf_sample *sample)
0f6a3015
JO		 1000{
1001 struct regs_dump *user_regs = &sample->user_regs;
1002
6a21c0b5
SE		 1003 if (user_regs->regs)
1004 regs__printf("user", user_regs);
1005}
1006
1007static void regs_intr__printf(struct perf_sample *sample)
1008{
1009 struct regs_dump *intr_regs = &sample->intr_regs;
1010
1011 if (intr_regs->regs)
1012 regs__printf("intr", intr_regs);
0f6a3015
JO		 1013}
1014
1015static void stack_user__printf(struct stack_dump *dump)
1016{
1017 printf("... ustack: size %" PRIu64 ", offset 0x%x\n",
1018 dump->size, dump->offset);
1019}
1020
9fa8727a 1021static void perf_evlist__print_tstamp(struct perf_evlist *evlist,
8115d60c 1022 union perf_event *event,
8d50e5b4 1023 struct perf_sample *sample)
9c90a61c 1024{
9fa8727a 1025 u64 sample_type = __perf_evlist__combined_sample_type(evlist);
7f3be652 1026
9c90a61c 1027 if (event->header.type != PERF_RECORD_SAMPLE &&
9fa8727a 1028 !perf_evlist__sample_id_all(evlist)) {
9c90a61c
ACM		 1029 fputs("-1 -1 ", stdout);
1030 return;
1031 }
1032
7f3be652 1033 if ((sample_type & PERF_SAMPLE_CPU))
9c90a61c
ACM		 1034 printf("%u ", sample->cpu);
1035
7f3be652 1036 if (sample_type & PERF_SAMPLE_TIME)
9486aa38 1037 printf("%" PRIu64 " ", sample->time);
9c90a61c
ACM		 1038}
1039
9ede473c
JO		 1040static void sample_read__printf(struct perf_sample *sample, u64 read_format)
1041{
1042 printf("... sample_read:\n");
1043
1044 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
1045 printf("...... time enabled %016" PRIx64 "\n",
1046 sample->read.time_enabled);
1047
1048 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
1049 printf("...... time running %016" PRIx64 "\n",
1050 sample->read.time_running);
1051
1052 if (read_format & PERF_FORMAT_GROUP) {
1053 u64 i;
1054
1055 printf(".... group nr %" PRIu64 "\n", sample->read.group.nr);
1056
1057 for (i = 0; i < sample->read.group.nr; i++) {
1058 struct sample_read_value *value;
1059
1060 value = &sample->read.group.values[i];
1061 printf("..... id %016" PRIx64
1062 ", value %016" PRIx64 "\n",
1063 value->id, value->value);
1064 }
1065 } else
1066 printf("..... id %016" PRIx64 ", value %016" PRIx64 "\n",
1067 sample->read.one.id, sample->read.one.value);
1068}
1069
9fa8727a 1070static void dump_event(struct perf_evlist *evlist, union perf_event *event,
8d50e5b4 1071 u64 file_offset, struct perf_sample *sample)
9aefcab0
TG		 1072{
1073 if (!dump_trace)
1074 return;
1075
9486aa38
ACM		 1076 printf("\n%#" PRIx64 " [%#x]: event: %d\n",
1077 file_offset, event->header.size, event->header.type);
9aefcab0
TG		 1078
1079 trace_event(event);
1080
1081 if (sample)
9fa8727a 1082 perf_evlist__print_tstamp(evlist, event, sample);
9aefcab0 1083
9486aa38 1084 printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset,
8115d60c 1085 event->header.size, perf_event__name(event->header.type));
9aefcab0
TG		 1086}
1087
0f6a3015 1088static void dump_sample(struct perf_evsel *evsel, union perf_event *event,
8d50e5b4 1089 struct perf_sample *sample)
9aefcab0 1090{
7f3be652
ACM		 1091 u64 sample_type;
1092
ddbc24b7
ACM		 1093 if (!dump_trace)
1094 return;
1095
0ea590ae 1096 printf("(IP, 0x%x): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n",
9486aa38 1097 event->header.misc, sample->pid, sample->tid, sample->ip,
7cec0922 1098 sample->period, sample->addr);
9aefcab0 1099
0f6a3015 1100 sample_type = evsel->attr.sample_type;
7f3be652
ACM		 1101
1102 if (sample_type & PERF_SAMPLE_CALLCHAIN)
384b6055 1103 callchain__printf(evsel, sample);
b5387528 1104
acf2abbd 1105 if ((sample_type & PERF_SAMPLE_BRANCH_STACK) && !perf_evsel__has_branch_callstack(evsel))
b5387528 1106 branch_stack__printf(sample);
0f6a3015
JO		 1107
1108 if (sample_type & PERF_SAMPLE_REGS_USER)
352ea45a 1109 regs_user__printf(sample);
0f6a3015 1110
6a21c0b5
SE		 1111 if (sample_type & PERF_SAMPLE_REGS_INTR)
1112 regs_intr__printf(sample);
1113
0f6a3015
JO		 1114 if (sample_type & PERF_SAMPLE_STACK_USER)
1115 stack_user__printf(&sample->user_stack);
05484298
AK		 1116
1117 if (sample_type & PERF_SAMPLE_WEIGHT)
1118 printf("... weight: %" PRIu64 "\n", sample->weight);
98a3b32c
SE		 1119
1120 if (sample_type & PERF_SAMPLE_DATA_SRC)
1121 printf(" . data_src: 0x%"PRIx64"\n", sample->data_src);
9ede473c 1122
8780fb25
KL		 1123 if (sample_type & PERF_SAMPLE_PHYS_ADDR)
1124 printf(" .. phys_addr: 0x%"PRIx64"\n", sample->phys_addr);
1125
475eeab9
AK		 1126 if (sample_type & PERF_SAMPLE_TRANSACTION)
1127 printf("... transaction: %" PRIx64 "\n", sample->transaction);
1128
9ede473c
JO		 1129 if (sample_type & PERF_SAMPLE_READ)
1130 sample_read__printf(sample, evsel->attr.read_format);
9aefcab0
TG		 1131}
1132
dac7f6b7
JO		 1133static void dump_read(struct perf_evsel *evsel, union perf_event *event)
1134{
1135 struct read_event *read_event = &event->read;
1136 u64 read_format;
1137
1138 if (!dump_trace)
1139 return;
1140
1141 printf(": %d %d %s %" PRIu64 "\n", event->read.pid, event->read.tid,
1142 evsel ? perf_evsel__name(evsel) : "FAIL",
1143 event->read.value);
1144
1145 read_format = evsel->attr.read_format;
1146
1147 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
1148 printf("... time enabled : %" PRIu64 "\n", read_event->time_enabled);
1149
1150 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
1151 printf("... time running : %" PRIu64 "\n", read_event->time_running);
1152
1153 if (read_format & PERF_FORMAT_ID)
1154 printf("... id : %" PRIu64 "\n", read_event->id);
1155}
1156
54245fdc 1157static struct machine *machines__find_for_cpumode(struct machines *machines,
ef89325f
AH		 1158 union perf_event *event,
1159 struct perf_sample *sample)
743eb868 1160{
ad85ace0 1161 struct machine *machine;
743eb868 1162
7c0f4a41 1163 if (perf_guest &&
473398a2
ACM		 1164 ((sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL) ||
1165 (sample->cpumode == PERF_RECORD_MISC_GUEST_USER))) {
7fb0a5ee
ND		 1166 u32 pid;
1167
5c5e854b
SE		 1168 if (event->header.type == PERF_RECORD_MMAP
1169 || event->header.type == PERF_RECORD_MMAP2)
7fb0a5ee
ND		 1170 pid = event->mmap.pid;
1171 else
ef89325f 1172 pid = sample->pid;
7fb0a5ee 1173
54245fdc 1174 machine = machines__find(machines, pid);
ad85ace0 1175 if (!machine)
3caeaa56 1176 machine = machines__findnew(machines, DEFAULT_GUEST_KERNEL_ID);
ad85ace0 1177 return machine;
7fb0a5ee 1178 }
743eb868 1179
54245fdc 1180 return &machines->host;
743eb868
ACM		 1181}
1182
313e53b0 1183static int deliver_sample_value(struct perf_evlist *evlist,
e4caec0d
JO		 1184 struct perf_tool *tool,
1185 union perf_event *event,
1186 struct perf_sample *sample,
1187 struct sample_read_value *v,
1188 struct machine *machine)
1189{
313e53b0 1190 struct perf_sample_id *sid = perf_evlist__id2sid(evlist, v->id);
e4caec0d 1191
e4caec0d
JO		 1192 if (sid) {
1193 sample->id = v->id;
1194 sample->period = v->value - sid->period;
1195 sid->period = v->value;
1196 }
1197
1198 if (!sid || sid->evsel == NULL) {
313e53b0 1199 ++evlist->stats.nr_unknown_id;
e4caec0d
JO		 1200 return 0;
1201 }
1202
1203 return tool->sample(tool, event, sample, sid->evsel, machine);
1204}
1205
313e53b0 1206static int deliver_sample_group(struct perf_evlist *evlist,
e4caec0d
JO		 1207 struct perf_tool *tool,
1208 union perf_event *event,
1209 struct perf_sample *sample,
1210 struct machine *machine)
1211{
1212 int ret = -EINVAL;
1213 u64 i;
1214
1215 for (i = 0; i < sample->read.group.nr; i++) {
313e53b0 1216 ret = deliver_sample_value(evlist, tool, event, sample,
e4caec0d
JO		 1217 &sample->read.group.values[i],
1218 machine);
1219 if (ret)
1220 break;
1221 }
1222
1223 return ret;
1224}
1225
1226static int
313e53b0 1227 perf_evlist__deliver_sample(struct perf_evlist *evlist,
e4caec0d
JO		 1228 struct perf_tool *tool,
1229 union perf_event *event,
1230 struct perf_sample *sample,
1231 struct perf_evsel *evsel,
1232 struct machine *machine)
1233{
1234 /* We know evsel != NULL. */
1235 u64 sample_type = evsel->attr.sample_type;
1236 u64 read_format = evsel->attr.read_format;
1237
d94386f2 1238 /* Standard sample delivery. */
e4caec0d
JO		 1239 if (!(sample_type & PERF_SAMPLE_READ))
1240 return tool->sample(tool, event, sample, evsel, machine);
1241
1242 /* For PERF_SAMPLE_READ we have either single or group mode. */
1243 if (read_format & PERF_FORMAT_GROUP)
313e53b0 1244 return deliver_sample_group(evlist, tool, event, sample,
e4caec0d
JO		 1245 machine);
1246 else
313e53b0 1247 return deliver_sample_value(evlist, tool, event, sample,
e4caec0d
JO		 1248 &sample->read.one, machine);
1249}
1250
d10eb1eb
ACM		 1251static int machines__deliver_event(struct machines *machines,
1252 struct perf_evlist *evlist,
1253 union perf_event *event,
1254 struct perf_sample *sample,
1255 struct perf_tool *tool, u64 file_offset)
cbf41645 1256{
9e69c210 1257 struct perf_evsel *evsel;
743eb868 1258 struct machine *machine;
9e69c210 1259
9fa8727a 1260 dump_event(evlist, event, file_offset, sample);
532e7269 1261
313e53b0 1262 evsel = perf_evlist__id2evsel(evlist, sample->id);
7b27509f 1263
fa713a4e 1264 machine = machines__find_for_cpumode(machines, event, sample);
743eb868 1265
cbf41645
TG		 1266 switch (event->header.type) {
1267 case PERF_RECORD_SAMPLE:
9e69c210 1268 if (evsel == NULL) {
313e53b0 1269 ++evlist->stats.nr_unknown_id;
6782206b 1270 return 0;
9e69c210 1271 }
1b29ac59 1272 dump_sample(evsel, event, sample);
0c095715 1273 if (machine == NULL) {
313e53b0 1274 ++evlist->stats.nr_unprocessable_samples;
6782206b 1275 return 0;
0c095715 1276 }
313e53b0 1277 return perf_evlist__deliver_sample(evlist, tool, event, sample, evsel, machine);
cbf41645 1278 case PERF_RECORD_MMAP:
45694aa7 1279 return tool->mmap(tool, event, sample, machine);
5c5e854b 1280 case PERF_RECORD_MMAP2:
930e6fcd
KL		 1281 if (event->header.misc & PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT)
1282 ++evlist->stats.nr_proc_map_timeout;
5c5e854b 1283 return tool->mmap2(tool, event, sample, machine);
cbf41645 1284 case PERF_RECORD_COMM:
45694aa7 1285 return tool->comm(tool, event, sample, machine);
f3b3614a
HB		 1286 case PERF_RECORD_NAMESPACES:
1287 return tool->namespaces(tool, event, sample, machine);
cbf41645 1288 case PERF_RECORD_FORK:
45694aa7 1289 return tool->fork(tool, event, sample, machine);
cbf41645 1290 case PERF_RECORD_EXIT:
45694aa7 1291 return tool->exit(tool, event, sample, machine);
cbf41645 1292 case PERF_RECORD_LOST:
45694aa7 1293 if (tool->lost == perf_event__process_lost)
313e53b0 1294 evlist->stats.total_lost += event->lost.lost;
45694aa7 1295 return tool->lost(tool, event, sample, machine);
c4937a91
KL		 1296 case PERF_RECORD_LOST_SAMPLES:
1297 if (tool->lost_samples == perf_event__process_lost_samples)
1298 evlist->stats.total_lost_samples += event->lost_samples.lost;
1299 return tool->lost_samples(tool, event, sample, machine);
cbf41645 1300 case PERF_RECORD_READ:
dac7f6b7 1301 dump_read(evsel, event);
45694aa7 1302 return tool->read(tool, event, sample, evsel, machine);
cbf41645 1303 case PERF_RECORD_THROTTLE:
45694aa7 1304 return tool->throttle(tool, event, sample, machine);
cbf41645 1305 case PERF_RECORD_UNTHROTTLE:
45694aa7 1306 return tool->unthrottle(tool, event, sample, machine);
4a96f7a0 1307 case PERF_RECORD_AUX:
05a1f47e
AS		 1308 if (tool->aux == perf_event__process_aux) {
1309 if (event->aux.flags & PERF_AUX_FLAG_TRUNCATED)
1310 evlist->stats.total_aux_lost += 1;
1311 if (event->aux.flags & PERF_AUX_FLAG_PARTIAL)
1312 evlist->stats.total_aux_partial += 1;
1313 }
4a96f7a0 1314 return tool->aux(tool, event, sample, machine);
0ad21f68
AH		 1315 case PERF_RECORD_ITRACE_START:
1316 return tool->itrace_start(tool, event, sample, machine);
0286039f
AH		 1317 case PERF_RECORD_SWITCH:
1318 case PERF_RECORD_SWITCH_CPU_WIDE:
1319 return tool->context_switch(tool, event, sample, machine);
cbf41645 1320 default:
313e53b0 1321 ++evlist->stats.nr_unknown_events;
cbf41645
TG		 1322 return -1;
1323 }
1324}
1325
c446870d
AH		 1326static int perf_session__deliver_event(struct perf_session *session,
1327 union perf_event *event,
1328 struct perf_sample *sample,
1329 struct perf_tool *tool,
1330 u64 file_offset)
1331{
1332 int ret;
1333
1334 ret = auxtrace__process_event(session, event, sample, tool);
1335 if (ret < 0)
1336 return ret;
1337 if (ret > 0)
1338 return 0;
1339
1340 return machines__deliver_event(&session->machines, session->evlist,
1341 event, sample, tool, file_offset);
1342}
1343
d5652d86
AH		 1344static s64 perf_session__process_user_event(struct perf_session *session,
1345 union perf_event *event,
d5652d86 1346 u64 file_offset)
06aae590 1347{
d704ebda 1348 struct ordered_events *oe = &session->ordered_events;
9870d780 1349 struct perf_tool *tool = session->tool;
cc9784bd 1350 int fd = perf_data_file__fd(session->file);
10d0f086
ACM		 1351 int err;
1352
9fa8727a 1353 dump_event(session->evlist, event, file_offset, NULL);
06aae590 1354
cbf41645 1355 /* These events are processed right away */
06aae590 1356 switch (event->header.type) {
2c46dbb5 1357 case PERF_RECORD_HEADER_ATTR:
47c3d109 1358 err = tool->attr(tool, event, &session->evlist);
cfe1c414 1359 if (err == 0) {
7b56cce2 1360 perf_session__set_id_hdr_size(session);
cfe1c414
AH		 1361 perf_session__set_comm_exec(session);
1362 }
10d0f086 1363 return err;
ffe77725
JO		 1364 case PERF_RECORD_EVENT_UPDATE:
1365 return tool->event_update(tool, event, &session->evlist);
f67697bd
JO		 1366 case PERF_RECORD_HEADER_EVENT_TYPE:
1367 /*
1368 * Depreceated, but we need to handle it for sake
1369 * of old data files create in pipe mode.
1370 */
1371 return 0;
9215545e
TZ		 1372 case PERF_RECORD_HEADER_TRACING_DATA:
1373 /* setup for reading amidst mmap */
cc9784bd 1374 lseek(fd, file_offset, SEEK_SET);
47c3d109 1375 return tool->tracing_data(tool, event, session);
c7929e47 1376 case PERF_RECORD_HEADER_BUILD_ID:
45694aa7 1377 return tool->build_id(tool, event, session);
d6b17beb 1378 case PERF_RECORD_FINISHED_ROUND:
d704ebda 1379 return tool->finished_round(tool, event, oe);
3c659eed
AH		 1380 case PERF_RECORD_ID_INDEX:
1381 return tool->id_index(tool, event, session);
a16ac023
AH		 1382 case PERF_RECORD_AUXTRACE_INFO:
1383 return tool->auxtrace_info(tool, event, session);
1384 case PERF_RECORD_AUXTRACE:
1385 /* setup for reading amidst mmap */
1386 lseek(fd, file_offset + event->header.size, SEEK_SET);
1387 return tool->auxtrace(tool, event, session);
e9bf54d2 1388 case PERF_RECORD_AUXTRACE_ERROR:
85ed4729 1389 perf_session__auxtrace_error_inc(session, event);
e9bf54d2 1390 return tool->auxtrace_error(tool, event, session);
5f3339d2
JO		 1391 case PERF_RECORD_THREAD_MAP:
1392 return tool->thread_map(tool, event, session);
6640b6c2
JO		 1393 case PERF_RECORD_CPU_MAP:
1394 return tool->cpu_map(tool, event, session);
374fb9e3
JO		 1395 case PERF_RECORD_STAT_CONFIG:
1396 return tool->stat_config(tool, event, session);
d80518c9
JO		 1397 case PERF_RECORD_STAT:
1398 return tool->stat(tool, event, session);
2d8f0f18
JO		 1399 case PERF_RECORD_STAT_ROUND:
1400 return tool->stat_round(tool, event, session);
46bc29b9
AH		 1401 case PERF_RECORD_TIME_CONV:
1402 session->time_conv = event->time_conv;
1403 return tool->time_conv(tool, event, session);
e9def1b2
DCC		 1404 case PERF_RECORD_HEADER_FEATURE:
1405 return tool->feature(tool, event, session);
06aae590 1406 default:
ba74f064 1407 return -EINVAL;
06aae590 1408 }
ba74f064
TG		 1409}
1410
a293829d
AH		 1411int perf_session__deliver_synth_event(struct perf_session *session,
1412 union perf_event *event,
b7b61cbe 1413 struct perf_sample *sample)
a293829d 1414{
fa713a4e 1415 struct perf_evlist *evlist = session->evlist;
9870d780 1416 struct perf_tool *tool = session->tool;
fa713a4e
ACM		 1417
1418 events_stats__inc(&evlist->stats, event->header.type);
a293829d
AH		 1419
1420 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
b7b61cbe 1421 return perf_session__process_user_event(session, event, 0);
a293829d 1422
fa713a4e 1423 return machines__deliver_event(&session->machines, evlist, event, sample, tool, 0);
a293829d
AH		 1424}
1425
268fb20f
JO		 1426static void event_swap(union perf_event *event, bool sample_id_all)
1427{
1428 perf_event__swap_op swap;
1429
1430 swap = perf_event__swap_ops[event->header.type];
1431 if (swap)
1432 swap(event, sample_id_all);
1433}
1434
5a52f33a
AH		 1435int perf_session__peek_event(struct perf_session *session, off_t file_offset,
1436 void *buf, size_t buf_sz,
1437 union perf_event **event_ptr,
1438 struct perf_sample *sample)
1439{
1440 union perf_event *event;
1441 size_t hdr_sz, rest;
1442 int fd;
1443
1444 if (session->one_mmap && !session->header.needs_swap) {
1445 event = file_offset - session->one_mmap_offset +
1446 session->one_mmap_addr;
1447 goto out_parse_sample;
1448 }
1449
1450 if (perf_data_file__is_pipe(session->file))
1451 return -1;
1452
1453 fd = perf_data_file__fd(session->file);
1454 hdr_sz = sizeof(struct perf_event_header);
1455
1456 if (buf_sz < hdr_sz)
1457 return -1;
1458
1459 if (lseek(fd, file_offset, SEEK_SET) == (off_t)-1 ||
554e92ed 1460 readn(fd, buf, hdr_sz) != (ssize_t)hdr_sz)
5a52f33a
AH		 1461 return -1;
1462
1463 event = (union perf_event *)buf;
1464
1465 if (session->header.needs_swap)
1466 perf_event_header__bswap(&event->header);
1467
554e92ed 1468 if (event->header.size < hdr_sz || event->header.size > buf_sz)
5a52f33a
AH		 1469 return -1;
1470
1471 rest = event->header.size - hdr_sz;
1472
554e92ed 1473 if (readn(fd, buf, rest) != (ssize_t)rest)
5a52f33a
AH		 1474 return -1;
1475
1476 if (session->header.needs_swap)
1477 event_swap(event, perf_evlist__sample_id_all(session->evlist));
1478
1479out_parse_sample:
1480
1481 if (sample && event->header.type < PERF_RECORD_USER_TYPE_START &&
1482 perf_evlist__parse_sample(session->evlist, event, sample))
1483 return -1;
1484
1485 *event_ptr = event;
1486
1487 return 0;
1488}
1489
d5652d86 1490static s64 perf_session__process_event(struct perf_session *session,
b7b61cbe 1491 union perf_event *event, u64 file_offset)
ba74f064 1492{
313e53b0 1493 struct perf_evlist *evlist = session->evlist;
9870d780 1494 struct perf_tool *tool = session->tool;
8d50e5b4 1495 struct perf_sample sample;
ba74f064
TG		 1496 int ret;
1497
268fb20f 1498 if (session->header.needs_swap)
313e53b0 1499 event_swap(event, perf_evlist__sample_id_all(evlist));
ba74f064
TG		 1500
1501 if (event->header.type >= PERF_RECORD_HEADER_MAX)
1502 return -EINVAL;
1503
313e53b0 1504 events_stats__inc(&evlist->stats, event->header.type);
ba74f064
TG		 1505
1506 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
b7b61cbe 1507 return perf_session__process_user_event(session, event, file_offset);
cbf41645 1508
3dfc2c0a
TG		 1509 /*
1510 * For all kernel events we get the sample data
1511 */
313e53b0 1512 ret = perf_evlist__parse_sample(evlist, event, &sample);
5538beca
FW		 1513 if (ret)
1514 return ret;
3dfc2c0a 1515
0a8cb85c 1516 if (tool->ordered_events) {
b7b61cbe 1517 ret = perf_session__queue_event(session, event, &sample, file_offset);
cbf41645
TG		 1518 if (ret != -ETIME)
1519 return ret;
1520 }
1521
c446870d
AH		 1522 return perf_session__deliver_event(session, event, &sample, tool,
1523 file_offset);
06aae590
ACM		 1524}
1525
316c7136 1526void perf_event_header__bswap(struct perf_event_header *hdr)
ba21594c 1527{
316c7136
ACM		 1528 hdr->type = bswap_32(hdr->type);
1529 hdr->misc = bswap_16(hdr->misc);
1530 hdr->size = bswap_16(hdr->size);
ba21594c
ACM		 1531}
1532
b424eba2
ACM		 1533struct thread *perf_session__findnew(struct perf_session *session, pid_t pid)
1534{
1fcb8768 1535 return machine__findnew_thread(&session->machines.host, -1, pid);
b424eba2
ACM		 1536}
1537
9d8b172f 1538int perf_session__register_idle_thread(struct perf_session *session)
06aae590 1539{
1fcb8768 1540 struct thread *thread;
9d8b172f 1541 int err = 0;
06aae590 1542
1fcb8768 1543 thread = machine__findnew_thread(&session->machines.host, 0, 0);
162f0bef 1544 if (thread == NULL || thread__set_comm(thread, "swapper", 0)) {
06aae590 1545 pr_err("problem inserting idle task.\n");
9d8b172f 1546 err = -1;
06aae590
ACM		 1547 }
1548
f3b3614a
HB		 1549 if (thread == NULL || thread__set_namespaces(thread, 0, NULL)) {
1550 pr_err("problem inserting idle task.\n");
1551 err = -1;
1552 }
1553
9d8b172f
MH		 1554 /* machine__findnew_thread() got the thread, so put it */
1555 thread__put(thread);
1556 return err;
06aae590
ACM		 1557}
1558
f06149c0
WN		 1559static void
1560perf_session__warn_order(const struct perf_session *session)
1561{
1562 const struct ordered_events *oe = &session->ordered_events;
1563 struct perf_evsel *evsel;
1564 bool should_warn = true;
1565
1566 evlist__for_each_entry(session->evlist, evsel) {
1567 if (evsel->attr.write_backward)
1568 should_warn = false;
1569 }
1570
1571 if (!should_warn)
1572 return;
1573 if (oe->nr_unordered_events != 0)
1574 ui__warning("%u out of order events recorded.\n", oe->nr_unordered_events);
1575}
1576
9870d780 1577static void perf_session__warn_about_errors(const struct perf_session *session)
11095994 1578{
9870d780 1579 const struct events_stats *stats = &session->evlist->stats;
9870d780
ACM		 1580
1581 if (session->tool->lost == perf_event__process_lost &&
ccda068f 1582 stats->nr_events[PERF_RECORD_LOST] != 0) {
7b27509f
ACM		 1583 ui__warning("Processed %d events and lost %d chunks!\n\n"
1584 "Check IO/CPU overload!\n\n",
ccda068f
ACM		 1585 stats->nr_events[0],
1586 stats->nr_events[PERF_RECORD_LOST]);
11095994
ACM		 1587 }
1588
c4937a91
KL		 1589 if (session->tool->lost_samples == perf_event__process_lost_samples) {
1590 double drop_rate;
1591
1592 drop_rate = (double)stats->total_lost_samples /
1593 (double) (stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples);
1594 if (drop_rate > 0.05) {
6ba29c2f 1595 ui__warning("Processed %" PRIu64 " samples and lost %3.2f%% samples!\n\n",
c4937a91
KL		 1596 stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples,
1597 drop_rate * 100.0);
1598 }
1599 }
1600
a38f48e3
AH		 1601 if (session->tool->aux == perf_event__process_aux &&
1602 stats->total_aux_lost != 0) {
1603 ui__warning("AUX data lost %" PRIu64 " times out of %u!\n\n",
1604 stats->total_aux_lost,
1605 stats->nr_events[PERF_RECORD_AUX]);
1606 }
1607
05a1f47e
AS		 1608 if (session->tool->aux == perf_event__process_aux &&
1609 stats->total_aux_partial != 0) {
1610 bool vmm_exclusive = false;
1611
1612 (void)sysfs__read_bool("module/kvm_intel/parameters/vmm_exclusive",
1613 &vmm_exclusive);
1614
1615 ui__warning("AUX data had gaps in it %" PRIu64 " times out of %u!\n\n"
1616 "Are you running a KVM guest in the background?%s\n\n",
1617 stats->total_aux_partial,
1618 stats->nr_events[PERF_RECORD_AUX],
1619 vmm_exclusive ?
1620 "\nReloading kvm_intel module with vmm_exclusive=0\n"
1621 "will reduce the gaps to only guest's timeslices." :
1622 "");
1623 }
1624
ccda068f 1625 if (stats->nr_unknown_events != 0) {
11095994
ACM		 1626 ui__warning("Found %u unknown events!\n\n"
1627 "Is this an older tool processing a perf.data "
1628 "file generated by a more recent tool?\n\n"
1629 "If that is not the case, consider "
1630 "reporting to linux-kernel@vger.kernel.org.\n\n",
ccda068f 1631 stats->nr_unknown_events);
11095994
ACM		 1632 }
1633
ccda068f 1634 if (stats->nr_unknown_id != 0) {
9e69c210 1635 ui__warning("%u samples with id not present in the header\n",
ccda068f 1636 stats->nr_unknown_id);
9e69c210
ACM		 1637 }
1638
ccda068f 1639 if (stats->nr_invalid_chains != 0) {
75be989a
ACM		 1640 ui__warning("Found invalid callchains!\n\n"
1641 "%u out of %u events were discarded for this reason.\n\n"
1642 "Consider reporting to linux-kernel@vger.kernel.org.\n\n",
ccda068f
ACM		 1643 stats->nr_invalid_chains,
1644 stats->nr_events[PERF_RECORD_SAMPLE]);
75be989a 1645 }
0c095715 1646
ccda068f 1647 if (stats->nr_unprocessable_samples != 0) {
0c095715
JR		 1648 ui__warning("%u unprocessable samples recorded.\n"
1649 "Do you have a KVM guest running and not using 'perf kvm'?\n",
ccda068f 1650 stats->nr_unprocessable_samples);
0c095715 1651 }
f61ff6c0 1652
f06149c0 1653 perf_session__warn_order(session);
85ed4729
AH		 1654
1655 events_stats__auxtrace_error_warn(stats);
930e6fcd
KL		 1656
1657 if (stats->nr_proc_map_timeout != 0) {
1658 ui__warning("%d map information files for pre-existing threads were\n"
1659 "not processed, if there are samples for addresses they\n"
1660 "will not be resolved, you may find out which are these\n"
1661 "threads by running with -v and redirecting the output\n"
9d9cad76
KL		 1662 "to a file.\n"
1663 "The time limit to process proc map is too short?\n"
1664 "Increase it by --proc-map-timeout\n",
930e6fcd
KL		 1665 stats->nr_proc_map_timeout);
1666 }
11095994
ACM		 1667}
1668
a5499b37
AH		 1669static int perf_session__flush_thread_stack(struct thread *thread,
1670 void *p __maybe_unused)
1671{
1672 return thread_stack__flush(thread);
1673}
1674
1675static int perf_session__flush_thread_stacks(struct perf_session *session)
1676{
1677 return machines__for_each_thread(&session->machines,
1678 perf_session__flush_thread_stack,
1679 NULL);
1680}
1681
8dc58101
TZ		 1682volatile int session_done;
1683
b7b61cbe 1684static int __perf_session__process_pipe_events(struct perf_session *session)
8dc58101 1685{
fa713a4e 1686 struct ordered_events *oe = &session->ordered_events;
9870d780 1687 struct perf_tool *tool = session->tool;
316c7136 1688 int fd = perf_data_file__fd(session->file);
444d2866
SE		 1689 union perf_event *event;
1690 uint32_t size, cur_size = 0;
1691 void *buf = NULL;
d5652d86 1692 s64 skip = 0;
8dc58101 1693 u64 head;
727ebd54 1694 ssize_t err;
8dc58101
TZ		 1695 void *p;
1696
45694aa7 1697 perf_tool__fill_defaults(tool);
8dc58101
TZ		 1698
1699 head = 0;
444d2866
SE		 1700 cur_size = sizeof(union perf_event);
1701
1702 buf = malloc(cur_size);
1703 if (!buf)
1704 return -errno;
1e0d4f02 1705 ordered_events__set_copy_on_queue(oe, true);
8dc58101 1706more:
444d2866 1707 event = buf;
cc9784bd 1708 err = readn(fd, event, sizeof(struct perf_event_header));
8dc58101
TZ		 1709 if (err <= 0) {
1710 if (err == 0)
1711 goto done;
1712
1713 pr_err("failed to read event header\n");
1714 goto out_err;
1715 }
1716
316c7136 1717 if (session->header.needs_swap)
444d2866 1718 perf_event_header__bswap(&event->header);
8dc58101 1719
444d2866 1720 size = event->header.size;
27389d78
AH		 1721 if (size < sizeof(struct perf_event_header)) {
1722 pr_err("bad event header size\n");
1723 goto out_err;
1724 }
8dc58101 1725
444d2866
SE		 1726 if (size > cur_size) {
1727 void *new = realloc(buf, size);
1728 if (!new) {
1729 pr_err("failed to allocate memory to read event\n");
1730 goto out_err;
1731 }
1732 buf = new;
1733 cur_size = size;
1734 event = buf;
1735 }
1736 p = event;
8dc58101
TZ		 1737 p += sizeof(struct perf_event_header);
1738
794e43b5 1739 if (size - sizeof(struct perf_event_header)) {
cc9784bd 1740 err = readn(fd, p, size - sizeof(struct perf_event_header));
794e43b5
TZ		 1741 if (err <= 0) {
1742 if (err == 0) {
1743 pr_err("unexpected end of event stream\n");
1744 goto done;
1745 }
8dc58101 1746
794e43b5
TZ		 1747 pr_err("failed to read event data\n");
1748 goto out_err;
1749 }
8dc58101
TZ		 1750 }
1751
b7b61cbe 1752 if ((skip = perf_session__process_event(session, event, head)) < 0) {
9389a460 1753 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
444d2866 1754 head, event->header.size, event->header.type);
9389a460
JO		 1755 err = -EINVAL;
1756 goto out_err;
8dc58101
TZ		 1757 }
1758
1759 head += size;
1760
8dc58101
TZ		 1761 if (skip > 0)
1762 head += skip;
1763
1764 if (!session_done())
1765 goto more;
1766done:
8c16b649 1767 /* do the final flush for ordered samples */
b7b61cbe 1768 err = ordered_events__flush(oe, OE_FLUSH__FINAL);
c446870d
AH		 1769 if (err)
1770 goto out_err;
1771 err = auxtrace__flush_events(session, tool);
a5499b37
AH		 1772 if (err)
1773 goto out_err;
1774 err = perf_session__flush_thread_stacks(session);
8dc58101 1775out_err:
444d2866 1776 free(buf);
9870d780 1777 perf_session__warn_about_errors(session);
adc56ed1 1778 ordered_events__free(&session->ordered_events);
c446870d 1779 auxtrace__free_events(session);
8dc58101
TZ		 1780 return err;
1781}
1782
998bedc8
FW		 1783static union perf_event *
1784fetch_mmaped_event(struct perf_session *session,
1785 u64 head, size_t mmap_size, char *buf)
1786{
1787 union perf_event *event;
1788
1789 /*
1790 * Ensure we have enough space remaining to read
1791 * the size of the event in the headers.
1792 */
1793 if (head + sizeof(event->header) > mmap_size)
1794 return NULL;
1795
1796 event = (union perf_event *)(buf + head);
1797
1798 if (session->header.needs_swap)
1799 perf_event_header__bswap(&event->header);
1800
27389d78
AH		 1801 if (head + event->header.size > mmap_size) {
1802 /* We're not fetching the event so swap back again */
1803 if (session->header.needs_swap)
1804 perf_event_header__bswap(&event->header);
998bedc8 1805 return NULL;
27389d78 1806 }
998bedc8
FW		 1807
1808 return event;
1809}
1810
35d48ddf
DM		 1811/*
1812 * On 64bit we can mmap the data file in one go. No need for tiny mmap
1813 * slices. On 32bit we use 32MB.
1814 */
1815#if BITS_PER_LONG == 64
1816#define MMAP_SIZE ULLONG_MAX
1817#define NUM_MMAPS 1
1818#else
1819#define MMAP_SIZE (32 * 1024 * 1024ULL)
1820#define NUM_MMAPS 128
1821#endif
1822
4ac30cf7
NK		 1823static int __perf_session__process_events(struct perf_session *session,
1824 u64 data_offset, u64 data_size,
b7b61cbe 1825 u64 file_size)
06aae590 1826{
fa713a4e 1827 struct ordered_events *oe = &session->ordered_events;
9870d780 1828 struct perf_tool *tool = session->tool;
cc9784bd 1829 int fd = perf_data_file__fd(session->file);
d5652d86 1830 u64 head, page_offset, file_offset, file_pos, size;
fe174207 1831 int err, mmap_prot, mmap_flags, map_idx = 0;
0c1fe6b2 1832 size_t mmap_size;
35d48ddf 1833 char *buf, *mmaps[NUM_MMAPS];
8115d60c 1834 union perf_event *event;
4d3001fd 1835 struct ui_progress prog;
d5652d86 1836 s64 skip;
0331ee0c 1837
45694aa7 1838 perf_tool__fill_defaults(tool);
06aae590 1839
0331ee0c
TG		 1840 page_offset = page_size * (data_offset / page_size);
1841 file_offset = page_offset;
1842 head = data_offset - page_offset;
06aae590 1843
381c02f6
MR		 1844 if (data_size == 0)
1845 goto out;
1846
1847 if (data_offset + data_size < file_size)
d6513281
TG		 1848 file_size = data_offset + data_size;
1849
4d3001fd 1850 ui_progress__init(&prog, file_size, "Processing events...");
55b44629 1851
35d48ddf 1852 mmap_size = MMAP_SIZE;
919d86d3 1853 if (mmap_size > file_size) {
55b44629 1854 mmap_size = file_size;
919d86d3
AH		 1855 session->one_mmap = true;
1856 }
55b44629 1857
fe174207
TG		 1858 memset(mmaps, 0, sizeof(mmaps));
1859
ba21594c
ACM		 1860 mmap_prot = PROT_READ;
1861 mmap_flags = MAP_SHARED;
1862
0331ee0c 1863 if (session->header.needs_swap) {
ba21594c
ACM		 1864 mmap_prot |= PROT_WRITE;
1865 mmap_flags = MAP_PRIVATE;
1866 }
06aae590 1867remap:
cc9784bd 1868 buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, fd,
55b44629 1869 file_offset);
06aae590
ACM		 1870 if (buf == MAP_FAILED) {
1871 pr_err("failed to mmap file\n");
1872 err = -errno;
1873 goto out_err;
1874 }
fe174207
TG		 1875 mmaps[map_idx] = buf;
1876 map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1);
d6513281 1877 file_pos = file_offset + head;
919d86d3
AH		 1878 if (session->one_mmap) {
1879 session->one_mmap_addr = buf;
1880 session->one_mmap_offset = file_offset;
1881 }
06aae590
ACM		 1882
1883more:
998bedc8
FW		 1884 event = fetch_mmaped_event(session, head, mmap_size, buf);
1885 if (!event) {
fe174207
TG		 1886 if (mmaps[map_idx]) {
1887 munmap(mmaps[map_idx], mmap_size);
1888 mmaps[map_idx] = NULL;
1889 }
06aae590 1890
0331ee0c
TG		 1891 page_offset = page_size * (head / page_size);
1892 file_offset += page_offset;
1893 head -= page_offset;
06aae590
ACM		 1894 goto remap;
1895 }
1896
1897 size = event->header.size;
1898
27389d78 1899 if (size < sizeof(struct perf_event_header) ||
b7b61cbe 1900 (skip = perf_session__process_event(session, event, file_pos)) < 0) {
9389a460
JO		 1901 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
1902 file_offset + head, event->header.size,
1903 event->header.type);
1904 err = -EINVAL;
1905 goto out_err;
06aae590
ACM		 1906 }
1907
6f917c70
AH		 1908 if (skip)
1909 size += skip;
1910
06aae590 1911 head += size;
d6513281 1912 file_pos += size;
06aae590 1913
4d3001fd 1914 ui_progress__update(&prog, size);
55b44629 1915
33e940a2 1916 if (session_done())
8c16b649 1917 goto out;
33e940a2 1918
d6513281 1919 if (file_pos < file_size)
06aae590 1920 goto more;
d6513281 1921
8c16b649 1922out:
c61e52ee 1923 /* do the final flush for ordered samples */
b7b61cbe 1924 err = ordered_events__flush(oe, OE_FLUSH__FINAL);
c446870d
AH		 1925 if (err)
1926 goto out_err;
1927 err = auxtrace__flush_events(session, tool);
a5499b37
AH		 1928 if (err)
1929 goto out_err;
1930 err = perf_session__flush_thread_stacks(session);
06aae590 1931out_err:
a5580f3e 1932 ui_progress__finish();
9870d780 1933 perf_session__warn_about_errors(session);
b26dc730
WN		 1934 /*
1935 * We may switching perf.data output, make ordered_events
1936 * reusable.
1937 */
1938 ordered_events__reinit(&session->ordered_events);
c446870d 1939 auxtrace__free_events(session);
919d86d3 1940 session->one_mmap = false;
06aae590
ACM		 1941 return err;
1942}
27295592 1943
b7b61cbe 1944int perf_session__process_events(struct perf_session *session)
6122e4e4 1945{
316c7136 1946 u64 size = perf_data_file__size(session->file);
6122e4e4
ACM		 1947 int err;
1948
9d8b172f 1949 if (perf_session__register_idle_thread(session) < 0)
6122e4e4
ACM		 1950 return -ENOMEM;
1951
316c7136
ACM		 1952 if (!perf_data_file__is_pipe(session->file))
1953 err = __perf_session__process_events(session,
1954 session->header.data_offset,
b7b61cbe 1955 session->header.data_size, size);
8dc58101 1956 else
b7b61cbe 1957 err = __perf_session__process_pipe_events(session);
88ca895d 1958
6122e4e4
ACM		 1959 return err;
1960}
1961
7f3be652 1962bool perf_session__has_traces(struct perf_session *session, const char *msg)
27295592 1963{
93ea01c2
DA		 1964 struct perf_evsel *evsel;
1965
e5cadb93 1966 evlist__for_each_entry(session->evlist, evsel) {
93ea01c2
DA		 1967 if (evsel->attr.type == PERF_TYPE_TRACEPOINT)
1968 return true;
27295592
ACM		 1969 }
1970
93ea01c2
DA		 1971 pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg);
1972 return false;
27295592 1973}
56b03f3c 1974
743eb868
ACM		 1975int maps__set_kallsyms_ref_reloc_sym(struct map **maps,
1976 const char *symbol_name, u64 addr)
56b03f3c
ACM		 1977{
1978 char *bracket;
a0b2f5af 1979 int i;
a1645ce1
ZY		 1980 struct ref_reloc_sym *ref;
1981
1982 ref = zalloc(sizeof(struct ref_reloc_sym));
1983 if (ref == NULL)
1984 return -ENOMEM;
56b03f3c 1985
a1645ce1
ZY		 1986 ref->name = strdup(symbol_name);
1987 if (ref->name == NULL) {
1988 free(ref);
56b03f3c 1989 return -ENOMEM;
a1645ce1 1990 }
56b03f3c 1991
a1645ce1 1992 bracket = strchr(ref->name, ']');
56b03f3c
ACM		 1993 if (bracket)
1994 *bracket = '\0';
1995
a1645ce1 1996 ref->addr = addr;
9de89fe7
ACM		 1997
1998 for (i = 0; i < MAP__NR_TYPES; ++i) {
a1645ce1 1999 struct kmap *kmap = map__kmap(maps[i]);
ba92732e
WN		 2000
2001 if (!kmap)
2002 continue;
a1645ce1 2003 kmap->ref_reloc_sym = ref;
9de89fe7
ACM		 2004 }
2005
56b03f3c
ACM		 2006 return 0;
2007}
1f626bc3 2008
316c7136 2009size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp)
1f626bc3 2010{
316c7136 2011 return machines__fprintf_dsos(&session->machines, fp);
1f626bc3 2012}
f869097e 2013
316c7136 2014size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp,
417c2ff6 2015 bool (skip)(struct dso *dso, int parm), int parm)
f869097e 2016{
316c7136 2017 return machines__fprintf_dsos_buildid(&session->machines, fp, skip, parm);
f869097e 2018}
e248de33
ACM		 2019
2020size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp)
2021{
c446870d
AH		 2022 size_t ret;
2023 const char *msg = "";
2024
2025 if (perf_header__has_feat(&session->header, HEADER_AUXTRACE))
2026 msg = " (excludes AUX area (e.g. instruction trace) decoded / synthesized events)";
2027
fe692ac8 2028 ret = fprintf(fp, "\nAggregated stats:%s\n", msg);
e248de33 2029
75be989a 2030 ret += events_stats__fprintf(&session->evlist->stats, fp);
e248de33
ACM		 2031 return ret;
2032}
c0230b2b 2033
b424eba2
ACM		 2034size_t perf_session__fprintf(struct perf_session *session, FILE *fp)
2035{
2036 /*
2037 * FIXME: Here we have to actually print all the machines in this
2038 * session, not just the host...
2039 */
876650e6 2040 return machine__fprintf(&session->machines.host, fp);
b424eba2
ACM		 2041}
2042
9cbdb702
DA		 2043struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session,
2044 unsigned int type)
2045{
2046 struct perf_evsel *pos;
2047
e5cadb93 2048 evlist__for_each_entry(session->evlist, pos) {
9cbdb702
DA		 2049 if (pos->attr.type == type)
2050 return pos;
2051 }
2052 return NULL;
2053}
2054
5d67be97
AB		 2055int perf_session__cpu_bitmap(struct perf_session *session,
2056 const char *cpu_list, unsigned long *cpu_bitmap)
2057{
8bac41cb 2058 int i, err = -1;
5d67be97
AB		 2059 struct cpu_map *map;
2060
2061 for (i = 0; i < PERF_TYPE_MAX; ++i) {
2062 struct perf_evsel *evsel;
2063
2064 evsel = perf_session__find_first_evtype(session, i);
2065 if (!evsel)
2066 continue;
2067
2068 if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) {
2069 pr_err("File does not contain CPU events. "
30795467 2070 "Remove -C option to proceed.\n");
5d67be97
AB		 2071 return -1;
2072 }
2073 }
2074
2075 map = cpu_map__new(cpu_list);
47fbe53b
DA		 2076 if (map == NULL) {
2077 pr_err("Invalid cpu_list\n");
2078 return -1;
2079 }
5d67be97
AB		 2080
2081 for (i = 0; i < map->nr; i++) {
2082 int cpu = map->map[i];
2083
2084 if (cpu >= MAX_NR_CPUS) {
2085 pr_err("Requested CPU %d too large. "
2086 "Consider raising MAX_NR_CPUS\n", cpu);
8bac41cb 2087 goto out_delete_map;
5d67be97
AB		 2088 }
2089
2090 set_bit(cpu, cpu_bitmap);
2091 }
2092
8bac41cb
SF		 2093 err = 0;
2094
2095out_delete_map:
f30a79b0 2096 cpu_map__put(map);
8bac41cb 2097 return err;
5d67be97 2098}
fbe96f29
SE		 2099
2100void perf_session__fprintf_info(struct perf_session *session, FILE *fp,
2101 bool full)
2102{
fbe96f29
SE		 2103 if (session == NULL || fp == NULL)
2104 return;
2105
fbe96f29 2106 fprintf(fp, "# ========\n");
fbe96f29
SE		 2107 perf_header__fprintf_info(session, fp, full);
2108 fprintf(fp, "# ========\n#\n");
2109}
da378962
ACM		 2110
2111
2112int __perf_session__set_tracepoints_handlers(struct perf_session *session,
2113 const struct perf_evsel_str_handler *assocs,
2114 size_t nr_assocs)
2115{
da378962 2116 struct perf_evsel *evsel;
da378962
ACM		 2117 size_t i;
2118 int err;
2119
2120 for (i = 0; i < nr_assocs; i++) {
ccf53eac
ACM		 2121 /*
2122 * Adding a handler for an event not in the session,
2123 * just ignore it.
2124 */
2125 evsel = perf_evlist__find_tracepoint_by_name(session->evlist, assocs[i].name);
da378962 2126 if (evsel == NULL)
ccf53eac 2127 continue;
da378962
ACM		 2128
2129 err = -EEXIST;
744a9719 2130 if (evsel->handler != NULL)
ccf53eac 2131 goto out;
744a9719 2132 evsel->handler = assocs[i].handler;
da378962
ACM		 2133 }
2134
2135 err = 0;
2136out:
2137 return err;
da378962 2138}
3c659eed
AH		 2139
2140int perf_event__process_id_index(struct perf_tool *tool __maybe_unused,
2141 union perf_event *event,
2142 struct perf_session *session)
2143{
2144 struct perf_evlist *evlist = session->evlist;
2145 struct id_index_event *ie = &event->id_index;
2146 size_t i, nr, max_nr;
2147
2148 max_nr = (ie->header.size - sizeof(struct id_index_event)) /
2149 sizeof(struct id_index_entry);
2150 nr = ie->nr;
2151 if (nr > max_nr)
2152 return -EINVAL;
2153
2154 if (dump_trace)
2155 fprintf(stdout, " nr: %zu\n", nr);
2156
2157 for (i = 0; i < nr; i++) {
2158 struct id_index_entry *e = &ie->entries[i];
2159 struct perf_sample_id *sid;
2160
2161 if (dump_trace) {
2162 fprintf(stdout, " ... id: %"PRIu64, e->id);
2163 fprintf(stdout, " idx: %"PRIu64, e->idx);
2164 fprintf(stdout, " cpu: %"PRId64, e->cpu);
2165 fprintf(stdout, " tid: %"PRId64"\n", e->tid);
2166 }
2167
2168 sid = perf_evlist__id2sid(evlist, e->id);
2169 if (!sid)
2170 return -ENOENT;
2171 sid->idx = e->idx;
2172 sid->cpu = e->cpu;
2173 sid->tid = e->tid;
2174 }
2175 return 0;
2176}
2177
2178int perf_event__synthesize_id_index(struct perf_tool *tool,
2179 perf_event__handler_t process,
2180 struct perf_evlist *evlist,
2181 struct machine *machine)
2182{
2183 union perf_event *ev;
2184 struct perf_evsel *evsel;
2185 size_t nr = 0, i = 0, sz, max_nr, n;
2186 int err;
2187
2188 pr_debug2("Synthesizing id index\n");
2189
2190 max_nr = (UINT16_MAX - sizeof(struct id_index_event)) /
2191 sizeof(struct id_index_entry);
2192
e5cadb93 2193 evlist__for_each_entry(evlist, evsel)
3c659eed
AH		 2194 nr += evsel->ids;
2195
2196 n = nr > max_nr ? max_nr : nr;
2197 sz = sizeof(struct id_index_event) + n * sizeof(struct id_index_entry);
2198 ev = zalloc(sz);
2199 if (!ev)
2200 return -ENOMEM;
2201
2202 ev->id_index.header.type = PERF_RECORD_ID_INDEX;
2203 ev->id_index.header.size = sz;
2204 ev->id_index.nr = n;
2205
e5cadb93 2206 evlist__for_each_entry(evlist, evsel) {
3c659eed
AH		 2207 u32 j;
2208
2209 for (j = 0; j < evsel->ids; j++) {
2210 struct id_index_entry *e;
2211 struct perf_sample_id *sid;
2212
2213 if (i >= n) {
2214 err = process(tool, ev, NULL, machine);
2215 if (err)
2216 goto out_err;
2217 nr -= n;
2218 i = 0;
2219 }
2220
2221 e = &ev->id_index.entries[i++];
2222
2223 e->id = evsel->id[j];
2224
2225 sid = perf_evlist__id2sid(evlist, e->id);
2226 if (!sid) {
2227 free(ev);
2228 return -ENOENT;
2229 }
2230
2231 e->idx = sid->idx;
2232 e->cpu = sid->cpu;
2233 e->tid = sid->tid;
2234 }
2235 }
2236
2237 sz = sizeof(struct id_index_event) + nr * sizeof(struct id_index_entry);
2238 ev->id_index.header.size = sz;
2239 ev->id_index.nr = nr;
2240
2241 err = process(tool, ev, NULL, machine);
2242out_err:
2243 free(ev);
2244
2245 return err;
2246}
Linux 6.x block layer and io_uring tree(s)