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perf trace: Allow dumping a BPF map after setting up BPF events
[linux-2.6-block.git] / tools / perf / util / session.c
CommitLineData
b2441318 1// SPDX-License-Identifier: GPL-2.0
a43783ae 2#include <errno.h>
fd20e811 3#include <inttypes.h>
94c744b6 4#include <linux/kernel.h>
4e319027 5#include <traceevent/event-parse.h>
05a1f47e 6#include <api/fs/fs.h>
94c744b6 7
ba21594c 8#include <byteswap.h>
94c744b6
ACM		 9#include <unistd.h>
10#include <sys/types.h>
a41794cd 11#include <sys/mman.h>
94c744b6 12
e248de33
ACM		 13#include "evlist.h"
14#include "evsel.h"
98521b38 15#include "memswap.h"
1101f69a 16#include "map.h"
daecf9e0 17#include "symbol.h"
94c744b6 18#include "session.h"
45694aa7 19#include "tool.h"
a328626b 20#include "sort.h"
94c744b6 21#include "util.h"
5d67be97 22#include "cpumap.h"
0f6a3015 23#include "perf_regs.h"
b0a45203 24#include "asm/bug.h"
c446870d 25#include "auxtrace.h"
e7ff8920 26#include "thread.h"
a5499b37 27#include "thread-stack.h"
93115d32 28#include "sample-raw.h"
2d2aea6a 29#include "stat.h"
ec1891af 30#include "arch/common.h"
94c744b6 31
c446870d
AH		 32static int perf_session__deliver_event(struct perf_session *session,
33 union perf_event *event,
c446870d
AH		 34 struct perf_tool *tool,
35 u64 file_offset);
d10eb1eb 36
316c7136 37static int perf_session__open(struct perf_session *session)
94c744b6 38{
8ceb41d7 39 struct perf_data *data = session->data;
8dc58101 40
316c7136 41 if (perf_session__read_header(session) < 0) {
e87b4911 42 pr_err("incompatible file format (rerun with -v to learn more)\n");
6a4d98d7 43 return -1;
94c744b6
ACM		 44 }
45
8ceb41d7 46 if (perf_data__is_pipe(data))
cc9784bd
JO		 47 return 0;
48
3ba78bd0
JO		 49 if (perf_header__has_feat(&session->header, HEADER_STAT))
50 return 0;
51
316c7136 52 if (!perf_evlist__valid_sample_type(session->evlist)) {
e87b4911 53 pr_err("non matching sample_type\n");
6a4d98d7 54 return -1;
c2a70653
ACM		 55 }
56
316c7136 57 if (!perf_evlist__valid_sample_id_all(session->evlist)) {
e87b4911 58 pr_err("non matching sample_id_all\n");
6a4d98d7 59 return -1;
c2a70653
ACM		 60 }
61
316c7136 62 if (!perf_evlist__valid_read_format(session->evlist)) {
e87b4911 63 pr_err("non matching read_format\n");
6a4d98d7 64 return -1;
9ede473c
JO		 65 }
66
94c744b6 67 return 0;
94c744b6
ACM		 68}
69
7b56cce2 70void perf_session__set_id_hdr_size(struct perf_session *session)
9c90a61c 71{
7b56cce2
ACM		 72 u16 id_hdr_size = perf_evlist__id_hdr_size(session->evlist);
73
7b56cce2 74 machines__set_id_hdr_size(&session->machines, id_hdr_size);
9c90a61c
ACM		 75}
76
316c7136 77int perf_session__create_kernel_maps(struct perf_session *session)
a1645ce1 78{
316c7136 79 int ret = machine__create_kernel_maps(&session->machines.host);
a1645ce1 80
a1645ce1 81 if (ret >= 0)
316c7136 82 ret = machines__create_guest_kernel_maps(&session->machines);
a1645ce1
ZY		 83 return ret;
84}
85
316c7136 86static void perf_session__destroy_kernel_maps(struct perf_session *session)
076c6e45 87{
316c7136 88 machines__destroy_kernel_maps(&session->machines);
076c6e45
ACM		 89}
90
cfe1c414
AH		 91static bool perf_session__has_comm_exec(struct perf_session *session)
92{
93 struct perf_evsel *evsel;
94
e5cadb93 95 evlist__for_each_entry(session->evlist, evsel) {
cfe1c414
AH		 96 if (evsel->attr.comm_exec)
97 return true;
98 }
99
100 return false;
101}
102
103static void perf_session__set_comm_exec(struct perf_session *session)
104{
105 bool comm_exec = perf_session__has_comm_exec(session);
106
107 machines__set_comm_exec(&session->machines, comm_exec);
108}
109
d10eb1eb 110static int ordered_events__deliver_event(struct ordered_events *oe,
9870d780 111 struct ordered_event *event)
d10eb1eb 112{
9870d780
ACM		 113 struct perf_session *session = container_of(oe, struct perf_session,
114 ordered_events);
9870d780 115
93d10af2 116 return perf_session__deliver_event(session, event->event,
c446870d 117 session->tool, event->file_offset);
d10eb1eb
ACM		 118}
119
8ceb41d7 120struct perf_session *perf_session__new(struct perf_data *data,
f5fc1412 121 bool repipe, struct perf_tool *tool)
94c744b6 122{
316c7136 123 struct perf_session *session = zalloc(sizeof(*session));
efad1415 124
316c7136 125 if (!session)
94c744b6
ACM		 126 goto out;
127
316c7136 128 session->repipe = repipe;
9870d780 129 session->tool = tool;
99fa2984 130 INIT_LIST_HEAD(&session->auxtrace_index);
316c7136 131 machines__init(&session->machines);
a4a6668a
JO		 132 ordered_events__init(&session->ordered_events,
133 ordered_events__deliver_event, NULL);
94c744b6 134
8ceb41d7
JO		 135 if (data) {
136 if (perf_data__open(data))
64abebf7 137 goto out_delete;
6a4d98d7 138
8ceb41d7 139 session->data = data;
6a4d98d7 140
8ceb41d7 141 if (perf_data__is_read(data)) {
316c7136 142 if (perf_session__open(session) < 0)
6a4d98d7
JO		 143 goto out_close;
144
0973ad97
DCC		 145 /*
146 * set session attributes that are present in perf.data
147 * but not in pipe-mode.
148 */
8ceb41d7 149 if (!data->is_pipe) {
0973ad97
DCC		 150 perf_session__set_id_hdr_size(session);
151 perf_session__set_comm_exec(session);
152 }
93115d32
TR		 153
154 perf_evlist__init_trace_event_sample_raw(session->evlist);
6a4d98d7 155 }
4cde998d
ACM		 156 } else {
157 session->machines.host.env = &perf_env;
6a4d98d7
JO		 158 }
159
ec1891af
AH		 160 session->machines.host.single_address_space =
161 perf_env__single_address_space(session->machines.host.env);
162
8ceb41d7 163 if (!data || perf_data__is_write(data)) {
64abebf7
ACM		 164 /*
165 * In O_RDONLY mode this will be performed when reading the
8115d60c 166 * kernel MMAP event, in perf_event__process_mmap().
64abebf7 167 */
316c7136 168 if (perf_session__create_kernel_maps(session) < 0)
a5c2a4c9 169 pr_warning("Cannot read kernel map\n");
64abebf7 170 }
d549c769 171
0973ad97
DCC		 172 /*
173 * In pipe-mode, evlist is empty until PERF_RECORD_HEADER_ATTR is
174 * processed, so perf_evlist__sample_id_all is not meaningful here.
175 */
8ceb41d7 176 if ((!data || !data->is_pipe) && tool && tool->ordering_requires_timestamps &&
0a8cb85c 177 tool->ordered_events && !perf_evlist__sample_id_all(session->evlist)) {
21ef97f0 178 dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n");
0a8cb85c 179 tool->ordered_events = false;
d10eb1eb 180 }
21ef97f0 181
316c7136 182 return session;
6a4d98d7
JO		 183
184 out_close:
8ceb41d7 185 perf_data__close(data);
6a4d98d7 186 out_delete:
316c7136 187 perf_session__delete(session);
6a4d98d7 188 out:
4aa65636 189 return NULL;
94c744b6
ACM		 190}
191
b424eba2
ACM		 192static void perf_session__delete_threads(struct perf_session *session)
193{
876650e6 194 machine__delete_threads(&session->machines.host);
b424eba2
ACM		 195}
196
316c7136 197void perf_session__delete(struct perf_session *session)
94c744b6 198{
e1446551
ACM		 199 if (session == NULL)
200 return;
c446870d 201 auxtrace__free(session);
99fa2984 202 auxtrace_index__free(&session->auxtrace_index);
316c7136 203 perf_session__destroy_kernel_maps(session);
316c7136 204 perf_session__delete_threads(session);
f0ce888c 205 perf_env__exit(&session->header.env);
316c7136 206 machines__exit(&session->machines);
8ceb41d7
JO		 207 if (session->data)
208 perf_data__close(session->data);
316c7136 209 free(session);
94c744b6 210}
a328626b 211
89f1688a 212static int process_event_synth_tracing_data_stub(struct perf_session *session
47c3d109
AH		 213 __maybe_unused,
214 union perf_event *event
89f1688a 215 __maybe_unused)
d20deb64
ACM		 216{
217 dump_printf(": unhandled!\n");
218 return 0;
219}
220
47c3d109
AH		 221static int process_event_synth_attr_stub(struct perf_tool *tool __maybe_unused,
222 union perf_event *event __maybe_unused,
1d037ca1
IT		 223 struct perf_evlist **pevlist
224 __maybe_unused)
10d0f086
ACM		 225{
226 dump_printf(": unhandled!\n");
227 return 0;
228}
229
ffe77725
JO		 230static int process_event_synth_event_update_stub(struct perf_tool *tool __maybe_unused,
231 union perf_event *event __maybe_unused,
232 struct perf_evlist **pevlist
233 __maybe_unused)
234{
2d2aea6a
JO		 235 if (dump_trace)
236 perf_event__fprintf_event_update(event, stdout);
237
ffe77725
JO		 238 dump_printf(": unhandled!\n");
239 return 0;
240}
241
1d037ca1
IT		 242static int process_event_sample_stub(struct perf_tool *tool __maybe_unused,
243 union perf_event *event __maybe_unused,
244 struct perf_sample *sample __maybe_unused,
245 struct perf_evsel *evsel __maybe_unused,
246 struct machine *machine __maybe_unused)
9e69c210
ACM		 247{
248 dump_printf(": unhandled!\n");
249 return 0;
250}
251
1d037ca1
IT		 252static int process_event_stub(struct perf_tool *tool __maybe_unused,
253 union perf_event *event __maybe_unused,
254 struct perf_sample *sample __maybe_unused,
255 struct machine *machine __maybe_unused)
06aae590
ACM		 256{
257 dump_printf(": unhandled!\n");
258 return 0;
259}
260
1d037ca1
IT		 261static int process_finished_round_stub(struct perf_tool *tool __maybe_unused,
262 union perf_event *event __maybe_unused,
d704ebda 263 struct ordered_events *oe __maybe_unused)
743eb868
ACM		 264{
265 dump_printf(": unhandled!\n");
266 return 0;
267}
268
45694aa7 269static int process_finished_round(struct perf_tool *tool,
d20deb64 270 union perf_event *event,
d704ebda 271 struct ordered_events *oe);
d6b17beb 272
a16ac023
AH		 273static int skipn(int fd, off_t n)
274{
275 char buf[4096];
276 ssize_t ret;
277
278 while (n > 0) {
279 ret = read(fd, buf, min(n, (off_t)sizeof(buf)));
280 if (ret <= 0)
281 return ret;
282 n -= ret;
283 }
284
285 return 0;
286}
287
7336555a
JO		 288static s64 process_event_auxtrace_stub(struct perf_session *session __maybe_unused,
289 union perf_event *event)
a16ac023
AH		 290{
291 dump_printf(": unhandled!\n");
8ceb41d7
JO		 292 if (perf_data__is_pipe(session->data))
293 skipn(perf_data__fd(session->data), event->auxtrace.size);
a16ac023
AH		 294 return event->auxtrace.size;
295}
296
89f1688a
JO		 297static int process_event_op2_stub(struct perf_session *session __maybe_unused,
298 union perf_event *event __maybe_unused)
e9bf54d2
AH		 299{
300 dump_printf(": unhandled!\n");
301 return 0;
302}
303
5f3339d2
JO		 304
305static
89f1688a
JO		 306int process_event_thread_map_stub(struct perf_session *session __maybe_unused,
307 union perf_event *event __maybe_unused)
5f3339d2 308{
2d2aea6a
JO		 309 if (dump_trace)
310 perf_event__fprintf_thread_map(event, stdout);
311
5f3339d2
JO		 312 dump_printf(": unhandled!\n");
313 return 0;
314}
315
6640b6c2 316static
89f1688a
JO		 317int process_event_cpu_map_stub(struct perf_session *session __maybe_unused,
318 union perf_event *event __maybe_unused)
6640b6c2 319{
2d2aea6a
JO		 320 if (dump_trace)
321 perf_event__fprintf_cpu_map(event, stdout);
322
6640b6c2
JO		 323 dump_printf(": unhandled!\n");
324 return 0;
325}
326
374fb9e3 327static
89f1688a
JO		 328int process_event_stat_config_stub(struct perf_session *session __maybe_unused,
329 union perf_event *event __maybe_unused)
374fb9e3 330{
2d2aea6a
JO		 331 if (dump_trace)
332 perf_event__fprintf_stat_config(event, stdout);
333
374fb9e3
JO		 334 dump_printf(": unhandled!\n");
335 return 0;
336}
337
89f1688a
JO		 338static int process_stat_stub(struct perf_session *perf_session __maybe_unused,
339 union perf_event *event)
d80518c9 340{
2d2aea6a
JO		 341 if (dump_trace)
342 perf_event__fprintf_stat(event, stdout);
343
d80518c9
JO		 344 dump_printf(": unhandled!\n");
345 return 0;
346}
347
89f1688a
JO		 348static int process_stat_round_stub(struct perf_session *perf_session __maybe_unused,
349 union perf_event *event)
2d8f0f18 350{
2d2aea6a
JO		 351 if (dump_trace)
352 perf_event__fprintf_stat_round(event, stdout);
353
2d8f0f18
JO		 354 dump_printf(": unhandled!\n");
355 return 0;
356}
357
9c501402 358void perf_tool__fill_defaults(struct perf_tool *tool)
06aae590 359{
45694aa7
ACM		 360 if (tool->sample == NULL)
361 tool->sample = process_event_sample_stub;
362 if (tool->mmap == NULL)
363 tool->mmap = process_event_stub;
6adb0b0a
DA		 364 if (tool->mmap2 == NULL)
365 tool->mmap2 = process_event_stub;
45694aa7
ACM		 366 if (tool->comm == NULL)
367 tool->comm = process_event_stub;
7f0cd236
NK		 368 if (tool->namespaces == NULL)
369 tool->namespaces = process_event_stub;
45694aa7
ACM		 370 if (tool->fork == NULL)
371 tool->fork = process_event_stub;
372 if (tool->exit == NULL)
373 tool->exit = process_event_stub;
374 if (tool->lost == NULL)
375 tool->lost = perf_event__process_lost;
c4937a91
KL		 376 if (tool->lost_samples == NULL)
377 tool->lost_samples = perf_event__process_lost_samples;
4a96f7a0
AH		 378 if (tool->aux == NULL)
379 tool->aux = perf_event__process_aux;
0ad21f68
AH		 380 if (tool->itrace_start == NULL)
381 tool->itrace_start = perf_event__process_itrace_start;
0286039f
AH		 382 if (tool->context_switch == NULL)
383 tool->context_switch = perf_event__process_switch;
9aa0bfa3
SL		 384 if (tool->ksymbol == NULL)
385 tool->ksymbol = perf_event__process_ksymbol;
45178a92
SL		 386 if (tool->bpf_event == NULL)
387 tool->bpf_event = perf_event__process_bpf_event;
45694aa7
ACM		 388 if (tool->read == NULL)
389 tool->read = process_event_sample_stub;
390 if (tool->throttle == NULL)
391 tool->throttle = process_event_stub;
392 if (tool->unthrottle == NULL)
393 tool->unthrottle = process_event_stub;
394 if (tool->attr == NULL)
395 tool->attr = process_event_synth_attr_stub;
ffe77725
JO		 396 if (tool->event_update == NULL)
397 tool->event_update = process_event_synth_event_update_stub;
45694aa7
ACM		 398 if (tool->tracing_data == NULL)
399 tool->tracing_data = process_event_synth_tracing_data_stub;
400 if (tool->build_id == NULL)
5fb0ac16 401 tool->build_id = process_event_op2_stub;
45694aa7 402 if (tool->finished_round == NULL) {
0a8cb85c 403 if (tool->ordered_events)
45694aa7 404 tool->finished_round = process_finished_round;
d6b17beb 405 else
45694aa7 406 tool->finished_round = process_finished_round_stub;
d6b17beb 407 }
3c659eed 408 if (tool->id_index == NULL)
5fb0ac16 409 tool->id_index = process_event_op2_stub;
a16ac023 410 if (tool->auxtrace_info == NULL)
5fb0ac16 411 tool->auxtrace_info = process_event_op2_stub;
a16ac023
AH		 412 if (tool->auxtrace == NULL)
413 tool->auxtrace = process_event_auxtrace_stub;
e9bf54d2 414 if (tool->auxtrace_error == NULL)
5fb0ac16 415 tool->auxtrace_error = process_event_op2_stub;
5f3339d2
JO		 416 if (tool->thread_map == NULL)
417 tool->thread_map = process_event_thread_map_stub;
6640b6c2
JO		 418 if (tool->cpu_map == NULL)
419 tool->cpu_map = process_event_cpu_map_stub;
374fb9e3
JO		 420 if (tool->stat_config == NULL)
421 tool->stat_config = process_event_stat_config_stub;
d80518c9
JO		 422 if (tool->stat == NULL)
423 tool->stat = process_stat_stub;
2d8f0f18
JO		 424 if (tool->stat_round == NULL)
425 tool->stat_round = process_stat_round_stub;
46bc29b9
AH		 426 if (tool->time_conv == NULL)
427 tool->time_conv = process_event_op2_stub;
e9def1b2
DCC		 428 if (tool->feature == NULL)
429 tool->feature = process_event_op2_stub;
06aae590 430}
48000a1a 431
268fb20f
JO		 432static void swap_sample_id_all(union perf_event *event, void *data)
433{
434 void *end = (void *) event + event->header.size;
435 int size = end - data;
436
437 BUG_ON(size % sizeof(u64));
438 mem_bswap_64(data, size);
439}
440
441static void perf_event__all64_swap(union perf_event *event,
1d037ca1 442 bool sample_id_all __maybe_unused)
ba21594c 443{
8115d60c
ACM		 444 struct perf_event_header *hdr = &event->header;
445 mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr));
ba21594c
ACM		 446}
447
268fb20f 448static void perf_event__comm_swap(union perf_event *event, bool sample_id_all)
ba21594c 449{
8115d60c
ACM		 450 event->comm.pid = bswap_32(event->comm.pid);
451 event->comm.tid = bswap_32(event->comm.tid);
268fb20f
JO		 452
453 if (sample_id_all) {
454 void *data = &event->comm.comm;
455
9ac3e487 456 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
268fb20f
JO		 457 swap_sample_id_all(event, data);
458 }
ba21594c
ACM		 459}
460
268fb20f
JO		 461static void perf_event__mmap_swap(union perf_event *event,
462 bool sample_id_all)
ba21594c 463{
8115d60c
ACM		 464 event->mmap.pid = bswap_32(event->mmap.pid);
465 event->mmap.tid = bswap_32(event->mmap.tid);
466 event->mmap.start = bswap_64(event->mmap.start);
467 event->mmap.len = bswap_64(event->mmap.len);
468 event->mmap.pgoff = bswap_64(event->mmap.pgoff);
268fb20f
JO		 469
470 if (sample_id_all) {
471 void *data = &event->mmap.filename;
472
9ac3e487 473 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
268fb20f
JO		 474 swap_sample_id_all(event, data);
475 }
ba21594c
ACM		 476}
477
5c5e854b
SE		 478static void perf_event__mmap2_swap(union perf_event *event,
479 bool sample_id_all)
480{
481 event->mmap2.pid = bswap_32(event->mmap2.pid);
482 event->mmap2.tid = bswap_32(event->mmap2.tid);
483 event->mmap2.start = bswap_64(event->mmap2.start);
484 event->mmap2.len = bswap_64(event->mmap2.len);
485 event->mmap2.pgoff = bswap_64(event->mmap2.pgoff);
486 event->mmap2.maj = bswap_32(event->mmap2.maj);
487 event->mmap2.min = bswap_32(event->mmap2.min);
488 event->mmap2.ino = bswap_64(event->mmap2.ino);
489
490 if (sample_id_all) {
491 void *data = &event->mmap2.filename;
492
493 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
494 swap_sample_id_all(event, data);
495 }
496}
268fb20f 497static void perf_event__task_swap(union perf_event *event, bool sample_id_all)
ba21594c 498{
8115d60c
ACM		 499 event->fork.pid = bswap_32(event->fork.pid);
500 event->fork.tid = bswap_32(event->fork.tid);
501 event->fork.ppid = bswap_32(event->fork.ppid);
502 event->fork.ptid = bswap_32(event->fork.ptid);
503 event->fork.time = bswap_64(event->fork.time);
268fb20f
JO		 504
505 if (sample_id_all)
506 swap_sample_id_all(event, &event->fork + 1);
ba21594c
ACM		 507}
508
268fb20f 509static void perf_event__read_swap(union perf_event *event, bool sample_id_all)
ba21594c 510{
8115d60c
ACM		 511 event->read.pid = bswap_32(event->read.pid);
512 event->read.tid = bswap_32(event->read.tid);
513 event->read.value = bswap_64(event->read.value);
514 event->read.time_enabled = bswap_64(event->read.time_enabled);
515 event->read.time_running = bswap_64(event->read.time_running);
516 event->read.id = bswap_64(event->read.id);
268fb20f
JO		 517
518 if (sample_id_all)
519 swap_sample_id_all(event, &event->read + 1);
ba21594c
ACM		 520}
521
4a96f7a0
AH		 522static void perf_event__aux_swap(union perf_event *event, bool sample_id_all)
523{
524 event->aux.aux_offset = bswap_64(event->aux.aux_offset);
525 event->aux.aux_size = bswap_64(event->aux.aux_size);
526 event->aux.flags = bswap_64(event->aux.flags);
527
528 if (sample_id_all)
529 swap_sample_id_all(event, &event->aux + 1);
530}
531
0ad21f68
AH		 532static void perf_event__itrace_start_swap(union perf_event *event,
533 bool sample_id_all)
534{
535 event->itrace_start.pid = bswap_32(event->itrace_start.pid);
536 event->itrace_start.tid = bswap_32(event->itrace_start.tid);
537
538 if (sample_id_all)
539 swap_sample_id_all(event, &event->itrace_start + 1);
540}
541
0286039f
AH		 542static void perf_event__switch_swap(union perf_event *event, bool sample_id_all)
543{
544 if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE) {
545 event->context_switch.next_prev_pid =
546 bswap_32(event->context_switch.next_prev_pid);
547 event->context_switch.next_prev_tid =
548 bswap_32(event->context_switch.next_prev_tid);
549 }
550
551 if (sample_id_all)
552 swap_sample_id_all(event, &event->context_switch + 1);
553}
554
dd96c46b
JO		 555static void perf_event__throttle_swap(union perf_event *event,
556 bool sample_id_all)
557{
558 event->throttle.time = bswap_64(event->throttle.time);
559 event->throttle.id = bswap_64(event->throttle.id);
560 event->throttle.stream_id = bswap_64(event->throttle.stream_id);
561
562 if (sample_id_all)
563 swap_sample_id_all(event, &event->throttle + 1);
564}
565
e108c66e
JO		 566static u8 revbyte(u8 b)
567{
568 int rev = (b >> 4) | ((b & 0xf) << 4);
569 rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2);
570 rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1);
571 return (u8) rev;
572}
573
574/*
575 * XXX this is hack in attempt to carry flags bitfield
bd1a0be5 576 * through endian village. ABI says:
e108c66e
JO		 577 *
578 * Bit-fields are allocated from right to left (least to most significant)
579 * on little-endian implementations and from left to right (most to least
580 * significant) on big-endian implementations.
581 *
582 * The above seems to be byte specific, so we need to reverse each
583 * byte of the bitfield. 'Internet' also says this might be implementation
584 * specific and we probably need proper fix and carry perf_event_attr
585 * bitfield flags in separate data file FEAT_ section. Thought this seems
586 * to work for now.
587 */
588static void swap_bitfield(u8 *p, unsigned len)
589{
590 unsigned i;
591
592 for (i = 0; i < len; i++) {
593 *p = revbyte(*p);
594 p++;
595 }
596}
597
eda3913b
DA		 598/* exported for swapping attributes in file header */
599void perf_event__attr_swap(struct perf_event_attr *attr)
600{
601 attr->type = bswap_32(attr->type);
602 attr->size = bswap_32(attr->size);
b30b6172
WN		 603
604#define bswap_safe(f, n) \
605 (attr->size > (offsetof(struct perf_event_attr, f) + \
606 sizeof(attr->f) * (n)))
607#define bswap_field(f, sz) \
608do { \
609 if (bswap_safe(f, 0)) \
610 attr->f = bswap_##sz(attr->f); \
611} while(0)
792d48b4 612#define bswap_field_16(f) bswap_field(f, 16)
b30b6172
WN		 613#define bswap_field_32(f) bswap_field(f, 32)
614#define bswap_field_64(f) bswap_field(f, 64)
615
616 bswap_field_64(config);
617 bswap_field_64(sample_period);
618 bswap_field_64(sample_type);
619 bswap_field_64(read_format);
620 bswap_field_32(wakeup_events);
621 bswap_field_32(bp_type);
622 bswap_field_64(bp_addr);
623 bswap_field_64(bp_len);
624 bswap_field_64(branch_sample_type);
625 bswap_field_64(sample_regs_user);
626 bswap_field_32(sample_stack_user);
627 bswap_field_32(aux_watermark);
792d48b4 628 bswap_field_16(sample_max_stack);
b30b6172
WN		 629
630 /*
631 * After read_format are bitfields. Check read_format because
632 * we are unable to use offsetof on bitfield.
633 */
634 if (bswap_safe(read_format, 1))
635 swap_bitfield((u8 *) (&attr->read_format + 1),
636 sizeof(u64));
637#undef bswap_field_64
638#undef bswap_field_32
639#undef bswap_field
640#undef bswap_safe
eda3913b
DA		 641}
642
268fb20f 643static void perf_event__hdr_attr_swap(union perf_event *event,
1d037ca1 644 bool sample_id_all __maybe_unused)
2c46dbb5
TZ		 645{
646 size_t size;
647
eda3913b 648 perf_event__attr_swap(&event->attr.attr);
2c46dbb5 649
8115d60c
ACM		 650 size = event->header.size;
651 size -= (void *)&event->attr.id - (void *)event;
652 mem_bswap_64(event->attr.id, size);
2c46dbb5
TZ		 653}
654
ffe77725
JO		 655static void perf_event__event_update_swap(union perf_event *event,
656 bool sample_id_all __maybe_unused)
657{
658 event->event_update.type = bswap_64(event->event_update.type);
659 event->event_update.id = bswap_64(event->event_update.id);
660}
661
268fb20f 662static void perf_event__event_type_swap(union perf_event *event,
1d037ca1 663 bool sample_id_all __maybe_unused)
cd19a035 664{
8115d60c
ACM		 665 event->event_type.event_type.event_id =
666 bswap_64(event->event_type.event_type.event_id);
cd19a035
TZ		 667}
668
268fb20f 669static void perf_event__tracing_data_swap(union perf_event *event,
1d037ca1 670 bool sample_id_all __maybe_unused)
9215545e 671{
8115d60c 672 event->tracing_data.size = bswap_32(event->tracing_data.size);
9215545e
TZ		 673}
674
a16ac023
AH		 675static void perf_event__auxtrace_info_swap(union perf_event *event,
676 bool sample_id_all __maybe_unused)
677{
678 size_t size;
679
680 event->auxtrace_info.type = bswap_32(event->auxtrace_info.type);
681
682 size = event->header.size;
683 size -= (void *)&event->auxtrace_info.priv - (void *)event;
684 mem_bswap_64(event->auxtrace_info.priv, size);
685}
686
687static void perf_event__auxtrace_swap(union perf_event *event,
688 bool sample_id_all __maybe_unused)
689{
690 event->auxtrace.size = bswap_64(event->auxtrace.size);
691 event->auxtrace.offset = bswap_64(event->auxtrace.offset);
692 event->auxtrace.reference = bswap_64(event->auxtrace.reference);
693 event->auxtrace.idx = bswap_32(event->auxtrace.idx);
694 event->auxtrace.tid = bswap_32(event->auxtrace.tid);
695 event->auxtrace.cpu = bswap_32(event->auxtrace.cpu);
696}
697
e9bf54d2
AH		 698static void perf_event__auxtrace_error_swap(union perf_event *event,
699 bool sample_id_all __maybe_unused)
700{
701 event->auxtrace_error.type = bswap_32(event->auxtrace_error.type);
702 event->auxtrace_error.code = bswap_32(event->auxtrace_error.code);
703 event->auxtrace_error.cpu = bswap_32(event->auxtrace_error.cpu);
704 event->auxtrace_error.pid = bswap_32(event->auxtrace_error.pid);
705 event->auxtrace_error.tid = bswap_32(event->auxtrace_error.tid);
16bd4321 706 event->auxtrace_error.fmt = bswap_32(event->auxtrace_error.fmt);
e9bf54d2 707 event->auxtrace_error.ip = bswap_64(event->auxtrace_error.ip);
16bd4321
AH		 708 if (event->auxtrace_error.fmt)
709 event->auxtrace_error.time = bswap_64(event->auxtrace_error.time);
e9bf54d2
AH		 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 872int perf_session__queue_event(struct perf_session *s, union perf_event *event,
dc83e139 873 u64 timestamp, u64 file_offset)
c61e52ee 874{
dc83e139 875 return ordered_events__queue(&s->ordered_events, event, timestamp, 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);
93115d32
TR		 1080 if (event->header.type == PERF_RECORD_SAMPLE && evlist->trace_event_sample_raw)
1081 evlist->trace_event_sample_raw(evlist, event, sample);
9aefcab0
TG		 1082
1083 if (sample)
9fa8727a 1084 perf_evlist__print_tstamp(evlist, event, sample);
9aefcab0 1085
9486aa38 1086 printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset,
8115d60c 1087 event->header.size, perf_event__name(event->header.type));
9aefcab0
TG		 1088}
1089
0f6a3015 1090static void dump_sample(struct perf_evsel *evsel, union perf_event *event,
8d50e5b4 1091 struct perf_sample *sample)
9aefcab0 1092{
7f3be652
ACM		 1093 u64 sample_type;
1094
ddbc24b7
ACM		 1095 if (!dump_trace)
1096 return;
1097
0ea590ae 1098 printf("(IP, 0x%x): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n",
9486aa38 1099 event->header.misc, sample->pid, sample->tid, sample->ip,
7cec0922 1100 sample->period, sample->addr);
9aefcab0 1101
0f6a3015 1102 sample_type = evsel->attr.sample_type;
7f3be652 1103
27de9b2b 1104 if (evsel__has_callchain(evsel))
384b6055 1105 callchain__printf(evsel, sample);
b5387528 1106
acf2abbd 1107 if ((sample_type & PERF_SAMPLE_BRANCH_STACK) && !perf_evsel__has_branch_callstack(evsel))
b5387528 1108 branch_stack__printf(sample);
0f6a3015
JO		 1109
1110 if (sample_type & PERF_SAMPLE_REGS_USER)
352ea45a 1111 regs_user__printf(sample);
0f6a3015 1112
6a21c0b5
SE		 1113 if (sample_type & PERF_SAMPLE_REGS_INTR)
1114 regs_intr__printf(sample);
1115
0f6a3015
JO		 1116 if (sample_type & PERF_SAMPLE_STACK_USER)
1117 stack_user__printf(&sample->user_stack);
05484298
AK		 1118
1119 if (sample_type & PERF_SAMPLE_WEIGHT)
1120 printf("... weight: %" PRIu64 "\n", sample->weight);
98a3b32c
SE		 1121
1122 if (sample_type & PERF_SAMPLE_DATA_SRC)
1123 printf(" . data_src: 0x%"PRIx64"\n", sample->data_src);
9ede473c 1124
8780fb25
KL		 1125 if (sample_type & PERF_SAMPLE_PHYS_ADDR)
1126 printf(" .. phys_addr: 0x%"PRIx64"\n", sample->phys_addr);
1127
475eeab9
AK		 1128 if (sample_type & PERF_SAMPLE_TRANSACTION)
1129 printf("... transaction: %" PRIx64 "\n", sample->transaction);
1130
9ede473c
JO		 1131 if (sample_type & PERF_SAMPLE_READ)
1132 sample_read__printf(sample, evsel->attr.read_format);
9aefcab0
TG		 1133}
1134
dac7f6b7
JO		 1135static void dump_read(struct perf_evsel *evsel, union perf_event *event)
1136{
1137 struct read_event *read_event = &event->read;
1138 u64 read_format;
1139
1140 if (!dump_trace)
1141 return;
1142
1143 printf(": %d %d %s %" PRIu64 "\n", event->read.pid, event->read.tid,
1144 evsel ? perf_evsel__name(evsel) : "FAIL",
1145 event->read.value);
1146
1147 read_format = evsel->attr.read_format;
1148
1149 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
1150 printf("... time enabled : %" PRIu64 "\n", read_event->time_enabled);
1151
1152 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
1153 printf("... time running : %" PRIu64 "\n", read_event->time_running);
1154
1155 if (read_format & PERF_FORMAT_ID)
1156 printf("... id : %" PRIu64 "\n", read_event->id);
1157}
1158
54245fdc 1159static struct machine *machines__find_for_cpumode(struct machines *machines,
ef89325f
AH		 1160 union perf_event *event,
1161 struct perf_sample *sample)
743eb868 1162{
ad85ace0 1163 struct machine *machine;
743eb868 1164
7c0f4a41 1165 if (perf_guest &&
473398a2
ACM		 1166 ((sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL) ||
1167 (sample->cpumode == PERF_RECORD_MISC_GUEST_USER))) {
7fb0a5ee
ND		 1168 u32 pid;
1169
5c5e854b
SE		 1170 if (event->header.type == PERF_RECORD_MMAP
1171 || event->header.type == PERF_RECORD_MMAP2)
7fb0a5ee
ND		 1172 pid = event->mmap.pid;
1173 else
ef89325f 1174 pid = sample->pid;
7fb0a5ee 1175
54245fdc 1176 machine = machines__find(machines, pid);
ad85ace0 1177 if (!machine)
3caeaa56 1178 machine = machines__findnew(machines, DEFAULT_GUEST_KERNEL_ID);
ad85ace0 1179 return machine;
7fb0a5ee 1180 }
743eb868 1181
54245fdc 1182 return &machines->host;
743eb868
ACM		 1183}
1184
313e53b0 1185static int deliver_sample_value(struct perf_evlist *evlist,
e4caec0d
JO		 1186 struct perf_tool *tool,
1187 union perf_event *event,
1188 struct perf_sample *sample,
1189 struct sample_read_value *v,
1190 struct machine *machine)
1191{
313e53b0 1192 struct perf_sample_id *sid = perf_evlist__id2sid(evlist, v->id);
e4caec0d 1193
e4caec0d
JO		 1194 if (sid) {
1195 sample->id = v->id;
1196 sample->period = v->value - sid->period;
1197 sid->period = v->value;
1198 }
1199
1200 if (!sid || sid->evsel == NULL) {
313e53b0 1201 ++evlist->stats.nr_unknown_id;
e4caec0d
JO		 1202 return 0;
1203 }
1204
1205 return tool->sample(tool, event, sample, sid->evsel, machine);
1206}
1207
313e53b0 1208static int deliver_sample_group(struct perf_evlist *evlist,
e4caec0d
JO		 1209 struct perf_tool *tool,
1210 union perf_event *event,
1211 struct perf_sample *sample,
1212 struct machine *machine)
1213{
1214 int ret = -EINVAL;
1215 u64 i;
1216
1217 for (i = 0; i < sample->read.group.nr; i++) {
313e53b0 1218 ret = deliver_sample_value(evlist, tool, event, sample,
e4caec0d
JO		 1219 &sample->read.group.values[i],
1220 machine);
1221 if (ret)
1222 break;
1223 }
1224
1225 return ret;
1226}
1227
1228static int
313e53b0 1229 perf_evlist__deliver_sample(struct perf_evlist *evlist,
e4caec0d
JO		 1230 struct perf_tool *tool,
1231 union perf_event *event,
1232 struct perf_sample *sample,
1233 struct perf_evsel *evsel,
1234 struct machine *machine)
1235{
1236 /* We know evsel != NULL. */
1237 u64 sample_type = evsel->attr.sample_type;
1238 u64 read_format = evsel->attr.read_format;
1239
d94386f2 1240 /* Standard sample delivery. */
e4caec0d
JO		 1241 if (!(sample_type & PERF_SAMPLE_READ))
1242 return tool->sample(tool, event, sample, evsel, machine);
1243
1244 /* For PERF_SAMPLE_READ we have either single or group mode. */
1245 if (read_format & PERF_FORMAT_GROUP)
313e53b0 1246 return deliver_sample_group(evlist, tool, event, sample,
e4caec0d
JO		 1247 machine);
1248 else
313e53b0 1249 return deliver_sample_value(evlist, tool, event, sample,
e4caec0d
JO		 1250 &sample->read.one, machine);
1251}
1252
d10eb1eb
ACM		 1253static int machines__deliver_event(struct machines *machines,
1254 struct perf_evlist *evlist,
1255 union perf_event *event,
1256 struct perf_sample *sample,
1257 struct perf_tool *tool, u64 file_offset)
cbf41645 1258{
9e69c210 1259 struct perf_evsel *evsel;
743eb868 1260 struct machine *machine;
9e69c210 1261
9fa8727a 1262 dump_event(evlist, event, file_offset, sample);
532e7269 1263
313e53b0 1264 evsel = perf_evlist__id2evsel(evlist, sample->id);
7b27509f 1265
fa713a4e 1266 machine = machines__find_for_cpumode(machines, event, sample);
743eb868 1267
cbf41645
TG		 1268 switch (event->header.type) {
1269 case PERF_RECORD_SAMPLE:
9e69c210 1270 if (evsel == NULL) {
313e53b0 1271 ++evlist->stats.nr_unknown_id;
6782206b 1272 return 0;
9e69c210 1273 }
1b29ac59 1274 dump_sample(evsel, event, sample);
0c095715 1275 if (machine == NULL) {
313e53b0 1276 ++evlist->stats.nr_unprocessable_samples;
6782206b 1277 return 0;
0c095715 1278 }
313e53b0 1279 return perf_evlist__deliver_sample(evlist, tool, event, sample, evsel, machine);
cbf41645 1280 case PERF_RECORD_MMAP:
45694aa7 1281 return tool->mmap(tool, event, sample, machine);
5c5e854b 1282 case PERF_RECORD_MMAP2:
930e6fcd
KL		 1283 if (event->header.misc & PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT)
1284 ++evlist->stats.nr_proc_map_timeout;
5c5e854b 1285 return tool->mmap2(tool, event, sample, machine);
cbf41645 1286 case PERF_RECORD_COMM:
45694aa7 1287 return tool->comm(tool, event, sample, machine);
f3b3614a
HB		 1288 case PERF_RECORD_NAMESPACES:
1289 return tool->namespaces(tool, event, sample, machine);
cbf41645 1290 case PERF_RECORD_FORK:
45694aa7 1291 return tool->fork(tool, event, sample, machine);
cbf41645 1292 case PERF_RECORD_EXIT:
45694aa7 1293 return tool->exit(tool, event, sample, machine);
cbf41645 1294 case PERF_RECORD_LOST:
45694aa7 1295 if (tool->lost == perf_event__process_lost)
313e53b0 1296 evlist->stats.total_lost += event->lost.lost;
45694aa7 1297 return tool->lost(tool, event, sample, machine);
c4937a91
KL		 1298 case PERF_RECORD_LOST_SAMPLES:
1299 if (tool->lost_samples == perf_event__process_lost_samples)
1300 evlist->stats.total_lost_samples += event->lost_samples.lost;
1301 return tool->lost_samples(tool, event, sample, machine);
cbf41645 1302 case PERF_RECORD_READ:
dac7f6b7 1303 dump_read(evsel, event);
45694aa7 1304 return tool->read(tool, event, sample, evsel, machine);
cbf41645 1305 case PERF_RECORD_THROTTLE:
45694aa7 1306 return tool->throttle(tool, event, sample, machine);
cbf41645 1307 case PERF_RECORD_UNTHROTTLE:
45694aa7 1308 return tool->unthrottle(tool, event, sample, machine);
4a96f7a0 1309 case PERF_RECORD_AUX:
05a1f47e
AS		 1310 if (tool->aux == perf_event__process_aux) {
1311 if (event->aux.flags & PERF_AUX_FLAG_TRUNCATED)
1312 evlist->stats.total_aux_lost += 1;
1313 if (event->aux.flags & PERF_AUX_FLAG_PARTIAL)
1314 evlist->stats.total_aux_partial += 1;
1315 }
4a96f7a0 1316 return tool->aux(tool, event, sample, machine);
0ad21f68
AH		 1317 case PERF_RECORD_ITRACE_START:
1318 return tool->itrace_start(tool, event, sample, machine);
0286039f
AH		 1319 case PERF_RECORD_SWITCH:
1320 case PERF_RECORD_SWITCH_CPU_WIDE:
1321 return tool->context_switch(tool, event, sample, machine);
9aa0bfa3
SL		 1322 case PERF_RECORD_KSYMBOL:
1323 return tool->ksymbol(tool, event, sample, machine);
45178a92
SL		 1324 case PERF_RECORD_BPF_EVENT:
1325 return tool->bpf_event(tool, event, sample, machine);
cbf41645 1326 default:
313e53b0 1327 ++evlist->stats.nr_unknown_events;
cbf41645
TG		 1328 return -1;
1329 }
1330}
1331
c446870d
AH		 1332static int perf_session__deliver_event(struct perf_session *session,
1333 union perf_event *event,
c446870d
AH		 1334 struct perf_tool *tool,
1335 u64 file_offset)
1336{
93d10af2 1337 struct perf_sample sample;
c446870d
AH		 1338 int ret;
1339
93d10af2
JO		 1340 ret = perf_evlist__parse_sample(session->evlist, event, &sample);
1341 if (ret) {
1342 pr_err("Can't parse sample, err = %d\n", ret);
1343 return ret;
1344 }
1345
1346 ret = auxtrace__process_event(session, event, &sample, tool);
c446870d
AH		 1347 if (ret < 0)
1348 return ret;
1349 if (ret > 0)
1350 return 0;
1351
1352 return machines__deliver_event(&session->machines, session->evlist,
93d10af2 1353 event, &sample, tool, file_offset);
c446870d
AH		 1354}
1355
d5652d86
AH		 1356static s64 perf_session__process_user_event(struct perf_session *session,
1357 union perf_event *event,
d5652d86 1358 u64 file_offset)
06aae590 1359{
d704ebda 1360 struct ordered_events *oe = &session->ordered_events;
9870d780 1361 struct perf_tool *tool = session->tool;
f250b09c 1362 struct perf_sample sample = { .time = 0, };
8ceb41d7 1363 int fd = perf_data__fd(session->data);
10d0f086
ACM		 1364 int err;
1365
f250b09c 1366 dump_event(session->evlist, event, file_offset, &sample);
06aae590 1367
cbf41645 1368 /* These events are processed right away */
06aae590 1369 switch (event->header.type) {
2c46dbb5 1370 case PERF_RECORD_HEADER_ATTR:
47c3d109 1371 err = tool->attr(tool, event, &session->evlist);
cfe1c414 1372 if (err == 0) {
7b56cce2 1373 perf_session__set_id_hdr_size(session);
cfe1c414
AH		 1374 perf_session__set_comm_exec(session);
1375 }
10d0f086 1376 return err;
ffe77725
JO		 1377 case PERF_RECORD_EVENT_UPDATE:
1378 return tool->event_update(tool, event, &session->evlist);
f67697bd
JO		 1379 case PERF_RECORD_HEADER_EVENT_TYPE:
1380 /*
1381 * Depreceated, but we need to handle it for sake
1382 * of old data files create in pipe mode.
1383 */
1384 return 0;
9215545e
TZ		 1385 case PERF_RECORD_HEADER_TRACING_DATA:
1386 /* setup for reading amidst mmap */
cc9784bd 1387 lseek(fd, file_offset, SEEK_SET);
89f1688a 1388 return tool->tracing_data(session, event);
c7929e47 1389 case PERF_RECORD_HEADER_BUILD_ID:
89f1688a 1390 return tool->build_id(session, event);
d6b17beb 1391 case PERF_RECORD_FINISHED_ROUND:
d704ebda 1392 return tool->finished_round(tool, event, oe);
3c659eed 1393 case PERF_RECORD_ID_INDEX:
89f1688a 1394 return tool->id_index(session, event);
a16ac023 1395 case PERF_RECORD_AUXTRACE_INFO:
89f1688a 1396 return tool->auxtrace_info(session, event);
a16ac023
AH		 1397 case PERF_RECORD_AUXTRACE:
1398 /* setup for reading amidst mmap */
1399 lseek(fd, file_offset + event->header.size, SEEK_SET);
7336555a 1400 return tool->auxtrace(session, event);
e9bf54d2 1401 case PERF_RECORD_AUXTRACE_ERROR:
85ed4729 1402 perf_session__auxtrace_error_inc(session, event);
89f1688a 1403 return tool->auxtrace_error(session, event);
5f3339d2 1404 case PERF_RECORD_THREAD_MAP:
89f1688a 1405 return tool->thread_map(session, event);
6640b6c2 1406 case PERF_RECORD_CPU_MAP:
89f1688a 1407 return tool->cpu_map(session, event);
374fb9e3 1408 case PERF_RECORD_STAT_CONFIG:
89f1688a 1409 return tool->stat_config(session, event);
d80518c9 1410 case PERF_RECORD_STAT:
89f1688a 1411 return tool->stat(session, event);
2d8f0f18 1412 case PERF_RECORD_STAT_ROUND:
89f1688a 1413 return tool->stat_round(session, event);
46bc29b9
AH		 1414 case PERF_RECORD_TIME_CONV:
1415 session->time_conv = event->time_conv;
89f1688a 1416 return tool->time_conv(session, event);
e9def1b2 1417 case PERF_RECORD_HEADER_FEATURE:
89f1688a 1418 return tool->feature(session, event);
06aae590 1419 default:
ba74f064 1420 return -EINVAL;
06aae590 1421 }
ba74f064
TG		 1422}
1423
a293829d
AH		 1424int perf_session__deliver_synth_event(struct perf_session *session,
1425 union perf_event *event,
b7b61cbe 1426 struct perf_sample *sample)
a293829d 1427{
fa713a4e 1428 struct perf_evlist *evlist = session->evlist;
9870d780 1429 struct perf_tool *tool = session->tool;
fa713a4e
ACM		 1430
1431 events_stats__inc(&evlist->stats, event->header.type);
a293829d
AH		 1432
1433 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
b7b61cbe 1434 return perf_session__process_user_event(session, event, 0);
a293829d 1435
fa713a4e 1436 return machines__deliver_event(&session->machines, evlist, event, sample, tool, 0);
a293829d
AH		 1437}
1438
268fb20f
JO		 1439static void event_swap(union perf_event *event, bool sample_id_all)
1440{
1441 perf_event__swap_op swap;
1442
1443 swap = perf_event__swap_ops[event->header.type];
1444 if (swap)
1445 swap(event, sample_id_all);
1446}
1447
5a52f33a
AH		 1448int perf_session__peek_event(struct perf_session *session, off_t file_offset,
1449 void *buf, size_t buf_sz,
1450 union perf_event **event_ptr,
1451 struct perf_sample *sample)
1452{
1453 union perf_event *event;
1454 size_t hdr_sz, rest;
1455 int fd;
1456
1457 if (session->one_mmap && !session->header.needs_swap) {
1458 event = file_offset - session->one_mmap_offset +
1459 session->one_mmap_addr;
1460 goto out_parse_sample;
1461 }
1462
8ceb41d7 1463 if (perf_data__is_pipe(session->data))
5a52f33a
AH		 1464 return -1;
1465
8ceb41d7 1466 fd = perf_data__fd(session->data);
5a52f33a
AH		 1467 hdr_sz = sizeof(struct perf_event_header);
1468
1469 if (buf_sz < hdr_sz)
1470 return -1;
1471
1472 if (lseek(fd, file_offset, SEEK_SET) == (off_t)-1 ||
554e92ed 1473 readn(fd, buf, hdr_sz) != (ssize_t)hdr_sz)
5a52f33a
AH		 1474 return -1;
1475
1476 event = (union perf_event *)buf;
1477
1478 if (session->header.needs_swap)
1479 perf_event_header__bswap(&event->header);
1480
554e92ed 1481 if (event->header.size < hdr_sz || event->header.size > buf_sz)
5a52f33a
AH		 1482 return -1;
1483
1484 rest = event->header.size - hdr_sz;
1485
554e92ed 1486 if (readn(fd, buf, rest) != (ssize_t)rest)
5a52f33a
AH		 1487 return -1;
1488
1489 if (session->header.needs_swap)
1490 event_swap(event, perf_evlist__sample_id_all(session->evlist));
1491
1492out_parse_sample:
1493
1494 if (sample && event->header.type < PERF_RECORD_USER_TYPE_START &&
1495 perf_evlist__parse_sample(session->evlist, event, sample))
1496 return -1;
1497
1498 *event_ptr = event;
1499
1500 return 0;
1501}
1502
d5652d86 1503static s64 perf_session__process_event(struct perf_session *session,
b7b61cbe 1504 union perf_event *event, u64 file_offset)
ba74f064 1505{
313e53b0 1506 struct perf_evlist *evlist = session->evlist;
9870d780 1507 struct perf_tool *tool = session->tool;
ba74f064
TG		 1508 int ret;
1509
268fb20f 1510 if (session->header.needs_swap)
313e53b0 1511 event_swap(event, perf_evlist__sample_id_all(evlist));
ba74f064
TG		 1512
1513 if (event->header.type >= PERF_RECORD_HEADER_MAX)
1514 return -EINVAL;
1515
313e53b0 1516 events_stats__inc(&evlist->stats, event->header.type);
ba74f064
TG		 1517
1518 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
b7b61cbe 1519 return perf_session__process_user_event(session, event, file_offset);
cbf41645 1520
0a8cb85c 1521 if (tool->ordered_events) {
631e8f0a 1522 u64 timestamp = -1ULL;
93d10af2
JO		 1523
1524 ret = perf_evlist__parse_sample_timestamp(evlist, event, &timestamp);
631e8f0a 1525 if (ret && ret != -1)
93d10af2
JO		 1526 return ret;
1527
1528 ret = perf_session__queue_event(session, event, timestamp, file_offset);
cbf41645
TG		 1529 if (ret != -ETIME)
1530 return ret;
1531 }
1532
93d10af2 1533 return perf_session__deliver_event(session, event, tool, file_offset);
06aae590
ACM		 1534}
1535
316c7136 1536void perf_event_header__bswap(struct perf_event_header *hdr)
ba21594c 1537{
316c7136
ACM		 1538 hdr->type = bswap_32(hdr->type);
1539 hdr->misc = bswap_16(hdr->misc);
1540 hdr->size = bswap_16(hdr->size);
ba21594c
ACM		 1541}
1542
b424eba2
ACM		 1543struct thread *perf_session__findnew(struct perf_session *session, pid_t pid)
1544{
1fcb8768 1545 return machine__findnew_thread(&session->machines.host, -1, pid);
b424eba2
ACM		 1546}
1547
b25756df
AH		 1548/*
1549 * Threads are identified by pid and tid, and the idle task has pid == tid == 0.
1550 * So here a single thread is created for that, but actually there is a separate
1551 * idle task per cpu, so there should be one 'struct thread' per cpu, but there
1552 * is only 1. That causes problems for some tools, requiring workarounds. For
1553 * example get_idle_thread() in builtin-sched.c, or thread_stack__per_cpu().
1554 */
9d8b172f 1555int perf_session__register_idle_thread(struct perf_session *session)
06aae590 1556{
1fcb8768 1557 struct thread *thread;
9d8b172f 1558 int err = 0;
06aae590 1559
1fcb8768 1560 thread = machine__findnew_thread(&session->machines.host, 0, 0);
162f0bef 1561 if (thread == NULL || thread__set_comm(thread, "swapper", 0)) {
06aae590 1562 pr_err("problem inserting idle task.\n");
9d8b172f 1563 err = -1;
06aae590
ACM		 1564 }
1565
f3b3614a
HB		 1566 if (thread == NULL || thread__set_namespaces(thread, 0, NULL)) {
1567 pr_err("problem inserting idle task.\n");
1568 err = -1;
1569 }
1570
9d8b172f
MH		 1571 /* machine__findnew_thread() got the thread, so put it */
1572 thread__put(thread);
1573 return err;
06aae590
ACM		 1574}
1575
f06149c0
WN		 1576static void
1577perf_session__warn_order(const struct perf_session *session)
1578{
1579 const struct ordered_events *oe = &session->ordered_events;
1580 struct perf_evsel *evsel;
1581 bool should_warn = true;
1582
1583 evlist__for_each_entry(session->evlist, evsel) {
1584 if (evsel->attr.write_backward)
1585 should_warn = false;
1586 }
1587
1588 if (!should_warn)
1589 return;
1590 if (oe->nr_unordered_events != 0)
1591 ui__warning("%u out of order events recorded.\n", oe->nr_unordered_events);
1592}
1593
9870d780 1594static void perf_session__warn_about_errors(const struct perf_session *session)
11095994 1595{
9870d780 1596 const struct events_stats *stats = &session->evlist->stats;
9870d780
ACM		 1597
1598 if (session->tool->lost == perf_event__process_lost &&
ccda068f 1599 stats->nr_events[PERF_RECORD_LOST] != 0) {
7b27509f
ACM		 1600 ui__warning("Processed %d events and lost %d chunks!\n\n"
1601 "Check IO/CPU overload!\n\n",
ccda068f
ACM		 1602 stats->nr_events[0],
1603 stats->nr_events[PERF_RECORD_LOST]);
11095994
ACM		 1604 }
1605
c4937a91
KL		 1606 if (session->tool->lost_samples == perf_event__process_lost_samples) {
1607 double drop_rate;
1608
1609 drop_rate = (double)stats->total_lost_samples /
1610 (double) (stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples);
1611 if (drop_rate > 0.05) {
41a43dac 1612 ui__warning("Processed %" PRIu64 " samples and lost %3.2f%%!\n\n",
c4937a91
KL		 1613 stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples,
1614 drop_rate * 100.0);
1615 }
1616 }
1617
a38f48e3
AH		 1618 if (session->tool->aux == perf_event__process_aux &&
1619 stats->total_aux_lost != 0) {
1620 ui__warning("AUX data lost %" PRIu64 " times out of %u!\n\n",
1621 stats->total_aux_lost,
1622 stats->nr_events[PERF_RECORD_AUX]);
1623 }
1624
05a1f47e
AS		 1625 if (session->tool->aux == perf_event__process_aux &&
1626 stats->total_aux_partial != 0) {
1627 bool vmm_exclusive = false;
1628
1629 (void)sysfs__read_bool("module/kvm_intel/parameters/vmm_exclusive",
1630 &vmm_exclusive);
1631
1632 ui__warning("AUX data had gaps in it %" PRIu64 " times out of %u!\n\n"
1633 "Are you running a KVM guest in the background?%s\n\n",
1634 stats->total_aux_partial,
1635 stats->nr_events[PERF_RECORD_AUX],
1636 vmm_exclusive ?
1637 "\nReloading kvm_intel module with vmm_exclusive=0\n"
1638 "will reduce the gaps to only guest's timeslices." :
1639 "");
1640 }
1641
ccda068f 1642 if (stats->nr_unknown_events != 0) {
11095994
ACM		 1643 ui__warning("Found %u unknown events!\n\n"
1644 "Is this an older tool processing a perf.data "
1645 "file generated by a more recent tool?\n\n"
1646 "If that is not the case, consider "
1647 "reporting to linux-kernel@vger.kernel.org.\n\n",
ccda068f 1648 stats->nr_unknown_events);
11095994
ACM		 1649 }
1650
ccda068f 1651 if (stats->nr_unknown_id != 0) {
9e69c210 1652 ui__warning("%u samples with id not present in the header\n",
ccda068f 1653 stats->nr_unknown_id);
9e69c210
ACM		 1654 }
1655
ccda068f 1656 if (stats->nr_invalid_chains != 0) {
75be989a
ACM		 1657 ui__warning("Found invalid callchains!\n\n"
1658 "%u out of %u events were discarded for this reason.\n\n"
1659 "Consider reporting to linux-kernel@vger.kernel.org.\n\n",
ccda068f
ACM		 1660 stats->nr_invalid_chains,
1661 stats->nr_events[PERF_RECORD_SAMPLE]);
75be989a 1662 }
0c095715 1663
ccda068f 1664 if (stats->nr_unprocessable_samples != 0) {
0c095715
JR		 1665 ui__warning("%u unprocessable samples recorded.\n"
1666 "Do you have a KVM guest running and not using 'perf kvm'?\n",
ccda068f 1667 stats->nr_unprocessable_samples);
0c095715 1668 }
f61ff6c0 1669
f06149c0 1670 perf_session__warn_order(session);
85ed4729
AH		 1671
1672 events_stats__auxtrace_error_warn(stats);
930e6fcd
KL		 1673
1674 if (stats->nr_proc_map_timeout != 0) {
1675 ui__warning("%d map information files for pre-existing threads were\n"
1676 "not processed, if there are samples for addresses they\n"
1677 "will not be resolved, you may find out which are these\n"
1678 "threads by running with -v and redirecting the output\n"
9d9cad76
KL		 1679 "to a file.\n"
1680 "The time limit to process proc map is too short?\n"
1681 "Increase it by --proc-map-timeout\n",
930e6fcd
KL		 1682 stats->nr_proc_map_timeout);
1683 }
11095994
ACM		 1684}
1685
a5499b37
AH		 1686static int perf_session__flush_thread_stack(struct thread *thread,
1687 void *p __maybe_unused)
1688{
1689 return thread_stack__flush(thread);
1690}
1691
1692static int perf_session__flush_thread_stacks(struct perf_session *session)
1693{
1694 return machines__for_each_thread(&session->machines,
1695 perf_session__flush_thread_stack,
1696 NULL);
1697}
1698
8dc58101
TZ		 1699volatile int session_done;
1700
b7b61cbe 1701static int __perf_session__process_pipe_events(struct perf_session *session)
8dc58101 1702{
fa713a4e 1703 struct ordered_events *oe = &session->ordered_events;
9870d780 1704 struct perf_tool *tool = session->tool;
8ceb41d7 1705 int fd = perf_data__fd(session->data);
444d2866
SE		 1706 union perf_event *event;
1707 uint32_t size, cur_size = 0;
1708 void *buf = NULL;
d5652d86 1709 s64 skip = 0;
8dc58101 1710 u64 head;
727ebd54 1711 ssize_t err;
8dc58101
TZ		 1712 void *p;
1713
45694aa7 1714 perf_tool__fill_defaults(tool);
8dc58101
TZ		 1715
1716 head = 0;
444d2866
SE		 1717 cur_size = sizeof(union perf_event);
1718
1719 buf = malloc(cur_size);
1720 if (!buf)
1721 return -errno;
1e0d4f02 1722 ordered_events__set_copy_on_queue(oe, true);
8dc58101 1723more:
444d2866 1724 event = buf;
cc9784bd 1725 err = readn(fd, event, sizeof(struct perf_event_header));
8dc58101
TZ		 1726 if (err <= 0) {
1727 if (err == 0)
1728 goto done;
1729
1730 pr_err("failed to read event header\n");
1731 goto out_err;
1732 }
1733
316c7136 1734 if (session->header.needs_swap)
444d2866 1735 perf_event_header__bswap(&event->header);
8dc58101 1736
444d2866 1737 size = event->header.size;
27389d78
AH		 1738 if (size < sizeof(struct perf_event_header)) {
1739 pr_err("bad event header size\n");
1740 goto out_err;
1741 }
8dc58101 1742
444d2866
SE		 1743 if (size > cur_size) {
1744 void *new = realloc(buf, size);
1745 if (!new) {
1746 pr_err("failed to allocate memory to read event\n");
1747 goto out_err;
1748 }
1749 buf = new;
1750 cur_size = size;
1751 event = buf;
1752 }
1753 p = event;
8dc58101
TZ		 1754 p += sizeof(struct perf_event_header);
1755
794e43b5 1756 if (size - sizeof(struct perf_event_header)) {
cc9784bd 1757 err = readn(fd, p, size - sizeof(struct perf_event_header));
794e43b5
TZ		 1758 if (err <= 0) {
1759 if (err == 0) {
1760 pr_err("unexpected end of event stream\n");
1761 goto done;
1762 }
8dc58101 1763
794e43b5
TZ		 1764 pr_err("failed to read event data\n");
1765 goto out_err;
1766 }
8dc58101
TZ		 1767 }
1768
b7b61cbe 1769 if ((skip = perf_session__process_event(session, event, head)) < 0) {
9389a460 1770 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
444d2866 1771 head, event->header.size, event->header.type);
9389a460
JO		 1772 err = -EINVAL;
1773 goto out_err;
8dc58101
TZ		 1774 }
1775
1776 head += size;
1777
8dc58101
TZ		 1778 if (skip > 0)
1779 head += skip;
1780
1781 if (!session_done())
1782 goto more;
1783done:
8c16b649 1784 /* do the final flush for ordered samples */
b7b61cbe 1785 err = ordered_events__flush(oe, OE_FLUSH__FINAL);
c446870d
AH		 1786 if (err)
1787 goto out_err;
1788 err = auxtrace__flush_events(session, tool);
a5499b37
AH		 1789 if (err)
1790 goto out_err;
1791 err = perf_session__flush_thread_stacks(session);
8dc58101 1792out_err:
444d2866 1793 free(buf);
075ca1eb
JO		 1794 if (!tool->no_warn)
1795 perf_session__warn_about_errors(session);
adc56ed1 1796 ordered_events__free(&session->ordered_events);
c446870d 1797 auxtrace__free_events(session);
8dc58101
TZ		 1798 return err;
1799}
1800
998bedc8
FW		 1801static union perf_event *
1802fetch_mmaped_event(struct perf_session *session,
1803 u64 head, size_t mmap_size, char *buf)
1804{
1805 union perf_event *event;
1806
1807 /*
1808 * Ensure we have enough space remaining to read
1809 * the size of the event in the headers.
1810 */
1811 if (head + sizeof(event->header) > mmap_size)
1812 return NULL;
1813
1814 event = (union perf_event *)(buf + head);
1815
1816 if (session->header.needs_swap)
1817 perf_event_header__bswap(&event->header);
1818
27389d78
AH		 1819 if (head + event->header.size > mmap_size) {
1820 /* We're not fetching the event so swap back again */
1821 if (session->header.needs_swap)
1822 perf_event_header__bswap(&event->header);
998bedc8 1823 return NULL;
27389d78 1824 }
998bedc8
FW		 1825
1826 return event;
1827}
1828
35d48ddf
DM		 1829/*
1830 * On 64bit we can mmap the data file in one go. No need for tiny mmap
1831 * slices. On 32bit we use 32MB.
1832 */
1833#if BITS_PER_LONG == 64
1834#define MMAP_SIZE ULLONG_MAX
1835#define NUM_MMAPS 1
1836#else
1837#define MMAP_SIZE (32 * 1024 * 1024ULL)
1838#define NUM_MMAPS 128
1839#endif
1840
82715eb1
JO		 1841struct reader {
1842 int fd;
f66f0950 1843 u64 data_size;
71002bd2 1844 u64 data_offset;
82715eb1
JO		 1845};
1846
3c7b67b2
JO		 1847static int
1848reader__process_events(struct reader *rd, struct perf_session *session,
1849 struct ui_progress *prog)
06aae590 1850{
3c7b67b2 1851 u64 data_size = rd->data_size;
d5652d86 1852 u64 head, page_offset, file_offset, file_pos, size;
3c7b67b2 1853 int err = 0, mmap_prot, mmap_flags, map_idx = 0;
0c1fe6b2 1854 size_t mmap_size;
35d48ddf 1855 char *buf, *mmaps[NUM_MMAPS];
8115d60c 1856 union perf_event *event;
d5652d86 1857 s64 skip;
0331ee0c 1858
3c7b67b2 1859 page_offset = page_size * (rd->data_offset / page_size);
0331ee0c 1860 file_offset = page_offset;
3c7b67b2 1861 head = rd->data_offset - page_offset;
06aae590 1862
3c7b67b2 1863 ui_progress__init_size(prog, data_size, "Processing events...");
381c02f6 1864
3c7b67b2 1865 data_size += rd->data_offset;
55b44629 1866
35d48ddf 1867 mmap_size = MMAP_SIZE;
4f5a473d
JO		 1868 if (mmap_size > data_size) {
1869 mmap_size = data_size;
919d86d3
AH		 1870 session->one_mmap = true;
1871 }
55b44629 1872
fe174207
TG		 1873 memset(mmaps, 0, sizeof(mmaps));
1874
ba21594c
ACM		 1875 mmap_prot = PROT_READ;
1876 mmap_flags = MAP_SHARED;
1877
0331ee0c 1878 if (session->header.needs_swap) {
ba21594c
ACM		 1879 mmap_prot |= PROT_WRITE;
1880 mmap_flags = MAP_PRIVATE;
1881 }
06aae590 1882remap:
3c7b67b2 1883 buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, rd->fd,
55b44629 1884 file_offset);
06aae590
ACM		 1885 if (buf == MAP_FAILED) {
1886 pr_err("failed to mmap file\n");
1887 err = -errno;
3c7b67b2 1888 goto out;
06aae590 1889 }
fe174207
TG		 1890 mmaps[map_idx] = buf;
1891 map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1);
d6513281 1892 file_pos = file_offset + head;
919d86d3
AH		 1893 if (session->one_mmap) {
1894 session->one_mmap_addr = buf;
1895 session->one_mmap_offset = file_offset;
1896 }
06aae590
ACM		 1897
1898more:
998bedc8
FW		 1899 event = fetch_mmaped_event(session, head, mmap_size, buf);
1900 if (!event) {
fe174207
TG		 1901 if (mmaps[map_idx]) {
1902 munmap(mmaps[map_idx], mmap_size);
1903 mmaps[map_idx] = NULL;
1904 }
06aae590 1905
0331ee0c
TG		 1906 page_offset = page_size * (head / page_size);
1907 file_offset += page_offset;
1908 head -= page_offset;
06aae590
ACM		 1909 goto remap;
1910 }
1911
1912 size = event->header.size;
1913
27389d78 1914 if (size < sizeof(struct perf_event_header) ||
b7b61cbe 1915 (skip = perf_session__process_event(session, event, file_pos)) < 0) {
9389a460
JO		 1916 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
1917 file_offset + head, event->header.size,
1918 event->header.type);
1919 err = -EINVAL;
3c7b67b2 1920 goto out;
06aae590
ACM		 1921 }
1922
6f917c70
AH		 1923 if (skip)
1924 size += skip;
1925
06aae590 1926 head += size;
d6513281 1927 file_pos += size;
06aae590 1928
3c7b67b2 1929 ui_progress__update(prog, size);
55b44629 1930
33e940a2 1931 if (session_done())
8c16b649 1932 goto out;
33e940a2 1933
4f5a473d 1934 if (file_pos < data_size)
06aae590 1935 goto more;
d6513281 1936
8c16b649 1937out:
3c7b67b2
JO		 1938 return err;
1939}
1940
1941static int __perf_session__process_events(struct perf_session *session)
1942{
1943 struct reader rd = {
1944 .fd = perf_data__fd(session->data),
1945 .data_size = session->header.data_size,
1946 .data_offset = session->header.data_offset,
1947 };
1948 struct ordered_events *oe = &session->ordered_events;
1949 struct perf_tool *tool = session->tool;
1950 struct ui_progress prog;
1951 int err;
1952
1953 perf_tool__fill_defaults(tool);
1954
1955 if (rd.data_size == 0)
1956 return -1;
1957
1958 ui_progress__init_size(&prog, rd.data_size, "Processing events...");
1959
1960 err = reader__process_events(&rd, session, &prog);
1961 if (err)
1962 goto out_err;
c61e52ee 1963 /* do the final flush for ordered samples */
b7b61cbe 1964 err = ordered_events__flush(oe, OE_FLUSH__FINAL);
c446870d
AH		 1965 if (err)
1966 goto out_err;
1967 err = auxtrace__flush_events(session, tool);
a5499b37
AH		 1968 if (err)
1969 goto out_err;
1970 err = perf_session__flush_thread_stacks(session);
06aae590 1971out_err:
a5580f3e 1972 ui_progress__finish();
075ca1eb
JO		 1973 if (!tool->no_warn)
1974 perf_session__warn_about_errors(session);
b26dc730
WN		 1975 /*
1976 * We may switching perf.data output, make ordered_events
1977 * reusable.
1978 */
1979 ordered_events__reinit(&session->ordered_events);
c446870d 1980 auxtrace__free_events(session);
919d86d3 1981 session->one_mmap = false;
06aae590
ACM		 1982 return err;
1983}
27295592 1984
b7b61cbe 1985int perf_session__process_events(struct perf_session *session)
6122e4e4 1986{
9d8b172f 1987 if (perf_session__register_idle_thread(session) < 0)
6122e4e4
ACM		 1988 return -ENOMEM;
1989
7ba4da10
JO		 1990 if (perf_data__is_pipe(session->data))
1991 return __perf_session__process_pipe_events(session);
88ca895d 1992
7ba4da10 1993 return __perf_session__process_events(session);
6122e4e4
ACM		 1994}
1995
7f3be652 1996bool perf_session__has_traces(struct perf_session *session, const char *msg)
27295592 1997{
93ea01c2
DA		 1998 struct perf_evsel *evsel;
1999
e5cadb93 2000 evlist__for_each_entry(session->evlist, evsel) {
93ea01c2
DA		 2001 if (evsel->attr.type == PERF_TYPE_TRACEPOINT)
2002 return true;
27295592
ACM		 2003 }
2004
93ea01c2
DA		 2005 pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg);
2006 return false;
27295592 2007}
56b03f3c 2008
3183f8ca 2009int map__set_kallsyms_ref_reloc_sym(struct map *map, const char *symbol_name, u64 addr)
56b03f3c
ACM		 2010{
2011 char *bracket;
a1645ce1 2012 struct ref_reloc_sym *ref;
3183f8ca 2013 struct kmap *kmap;
a1645ce1
ZY		 2014
2015 ref = zalloc(sizeof(struct ref_reloc_sym));
2016 if (ref == NULL)
2017 return -ENOMEM;
56b03f3c 2018
a1645ce1
ZY		 2019 ref->name = strdup(symbol_name);
2020 if (ref->name == NULL) {
2021 free(ref);
56b03f3c 2022 return -ENOMEM;
a1645ce1 2023 }
56b03f3c 2024
a1645ce1 2025 bracket = strchr(ref->name, ']');
56b03f3c
ACM		 2026 if (bracket)
2027 *bracket = '\0';
2028
a1645ce1 2029 ref->addr = addr;
9de89fe7 2030
3183f8ca
ACM		 2031 kmap = map__kmap(map);
2032 if (kmap)
a1645ce1 2033 kmap->ref_reloc_sym = ref;
9de89fe7 2034
56b03f3c
ACM		 2035 return 0;
2036}
1f626bc3 2037
316c7136 2038size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp)
1f626bc3 2039{
316c7136 2040 return machines__fprintf_dsos(&session->machines, fp);
1f626bc3 2041}
f869097e 2042
316c7136 2043size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp,
417c2ff6 2044 bool (skip)(struct dso *dso, int parm), int parm)
f869097e 2045{
316c7136 2046 return machines__fprintf_dsos_buildid(&session->machines, fp, skip, parm);
f869097e 2047}
e248de33
ACM		 2048
2049size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp)
2050{
c446870d
AH		 2051 size_t ret;
2052 const char *msg = "";
2053
2054 if (perf_header__has_feat(&session->header, HEADER_AUXTRACE))
2055 msg = " (excludes AUX area (e.g. instruction trace) decoded / synthesized events)";
2056
fe692ac8 2057 ret = fprintf(fp, "\nAggregated stats:%s\n", msg);
e248de33 2058
75be989a 2059 ret += events_stats__fprintf(&session->evlist->stats, fp);
e248de33
ACM		 2060 return ret;
2061}
c0230b2b 2062
b424eba2
ACM		 2063size_t perf_session__fprintf(struct perf_session *session, FILE *fp)
2064{
2065 /*
2066 * FIXME: Here we have to actually print all the machines in this
2067 * session, not just the host...
2068 */
876650e6 2069 return machine__fprintf(&session->machines.host, fp);
b424eba2
ACM		 2070}
2071
9cbdb702
DA		 2072struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session,
2073 unsigned int type)
2074{
2075 struct perf_evsel *pos;
2076
e5cadb93 2077 evlist__for_each_entry(session->evlist, pos) {
9cbdb702
DA		 2078 if (pos->attr.type == type)
2079 return pos;
2080 }
2081 return NULL;
2082}
2083
5d67be97
AB		 2084int perf_session__cpu_bitmap(struct perf_session *session,
2085 const char *cpu_list, unsigned long *cpu_bitmap)
2086{
8bac41cb 2087 int i, err = -1;
5d67be97
AB		 2088 struct cpu_map *map;
2089
2090 for (i = 0; i < PERF_TYPE_MAX; ++i) {
2091 struct perf_evsel *evsel;
2092
2093 evsel = perf_session__find_first_evtype(session, i);
2094 if (!evsel)
2095 continue;
2096
2097 if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) {
2098 pr_err("File does not contain CPU events. "
30795467 2099 "Remove -C option to proceed.\n");
5d67be97
AB		 2100 return -1;
2101 }
2102 }
2103
2104 map = cpu_map__new(cpu_list);
47fbe53b
DA		 2105 if (map == NULL) {
2106 pr_err("Invalid cpu_list\n");
2107 return -1;
2108 }
5d67be97
AB		 2109
2110 for (i = 0; i < map->nr; i++) {
2111 int cpu = map->map[i];
2112
2113 if (cpu >= MAX_NR_CPUS) {
2114 pr_err("Requested CPU %d too large. "
2115 "Consider raising MAX_NR_CPUS\n", cpu);
8bac41cb 2116 goto out_delete_map;
5d67be97
AB		 2117 }
2118
2119 set_bit(cpu, cpu_bitmap);
2120 }
2121
8bac41cb
SF		 2122 err = 0;
2123
2124out_delete_map:
f30a79b0 2125 cpu_map__put(map);
8bac41cb 2126 return err;
5d67be97 2127}
fbe96f29
SE		 2128
2129void perf_session__fprintf_info(struct perf_session *session, FILE *fp,
2130 bool full)
2131{
fbe96f29
SE		 2132 if (session == NULL || fp == NULL)
2133 return;
2134
fbe96f29 2135 fprintf(fp, "# ========\n");
fbe96f29
SE		 2136 perf_header__fprintf_info(session, fp, full);
2137 fprintf(fp, "# ========\n#\n");
2138}
da378962
ACM		 2139
2140
2141int __perf_session__set_tracepoints_handlers(struct perf_session *session,
2142 const struct perf_evsel_str_handler *assocs,
2143 size_t nr_assocs)
2144{
da378962 2145 struct perf_evsel *evsel;
da378962
ACM		 2146 size_t i;
2147 int err;
2148
2149 for (i = 0; i < nr_assocs; i++) {
ccf53eac
ACM		 2150 /*
2151 * Adding a handler for an event not in the session,
2152 * just ignore it.
2153 */
2154 evsel = perf_evlist__find_tracepoint_by_name(session->evlist, assocs[i].name);
da378962 2155 if (evsel == NULL)
ccf53eac 2156 continue;
da378962
ACM		 2157
2158 err = -EEXIST;
744a9719 2159 if (evsel->handler != NULL)
ccf53eac 2160 goto out;
744a9719 2161 evsel->handler = assocs[i].handler;
da378962
ACM		 2162 }
2163
2164 err = 0;
2165out:
2166 return err;
da378962 2167}
3c659eed 2168
89f1688a
JO		 2169int perf_event__process_id_index(struct perf_session *session,
2170 union perf_event *event)
3c659eed
AH		 2171{
2172 struct perf_evlist *evlist = session->evlist;
2173 struct id_index_event *ie = &event->id_index;
2174 size_t i, nr, max_nr;
2175
2176 max_nr = (ie->header.size - sizeof(struct id_index_event)) /
2177 sizeof(struct id_index_entry);
2178 nr = ie->nr;
2179 if (nr > max_nr)
2180 return -EINVAL;
2181
2182 if (dump_trace)
2183 fprintf(stdout, " nr: %zu\n", nr);
2184
2185 for (i = 0; i < nr; i++) {
2186 struct id_index_entry *e = &ie->entries[i];
2187 struct perf_sample_id *sid;
2188
2189 if (dump_trace) {
2190 fprintf(stdout, " ... id: %"PRIu64, e->id);
2191 fprintf(stdout, " idx: %"PRIu64, e->idx);
2192 fprintf(stdout, " cpu: %"PRId64, e->cpu);
2193 fprintf(stdout, " tid: %"PRId64"\n", e->tid);
2194 }
2195
2196 sid = perf_evlist__id2sid(evlist, e->id);
2197 if (!sid)
2198 return -ENOENT;
2199 sid->idx = e->idx;
2200 sid->cpu = e->cpu;
2201 sid->tid = e->tid;
2202 }
2203 return 0;
2204}
2205
2206int perf_event__synthesize_id_index(struct perf_tool *tool,
2207 perf_event__handler_t process,
2208 struct perf_evlist *evlist,
2209 struct machine *machine)
2210{
2211 union perf_event *ev;
2212 struct perf_evsel *evsel;
2213 size_t nr = 0, i = 0, sz, max_nr, n;
2214 int err;
2215
2216 pr_debug2("Synthesizing id index\n");
2217
2218 max_nr = (UINT16_MAX - sizeof(struct id_index_event)) /
2219 sizeof(struct id_index_entry);
2220
e5cadb93 2221 evlist__for_each_entry(evlist, evsel)
3c659eed
AH		 2222 nr += evsel->ids;
2223
2224 n = nr > max_nr ? max_nr : nr;
2225 sz = sizeof(struct id_index_event) + n * sizeof(struct id_index_entry);
2226 ev = zalloc(sz);
2227 if (!ev)
2228 return -ENOMEM;
2229
2230 ev->id_index.header.type = PERF_RECORD_ID_INDEX;
2231 ev->id_index.header.size = sz;
2232 ev->id_index.nr = n;
2233
e5cadb93 2234 evlist__for_each_entry(evlist, evsel) {
3c659eed
AH		 2235 u32 j;
2236
2237 for (j = 0; j < evsel->ids; j++) {
2238 struct id_index_entry *e;
2239 struct perf_sample_id *sid;
2240
2241 if (i >= n) {
2242 err = process(tool, ev, NULL, machine);
2243 if (err)
2244 goto out_err;
2245 nr -= n;
2246 i = 0;
2247 }
2248
2249 e = &ev->id_index.entries[i++];
2250
2251 e->id = evsel->id[j];
2252
2253 sid = perf_evlist__id2sid(evlist, e->id);
2254 if (!sid) {
2255 free(ev);
2256 return -ENOENT;
2257 }
2258
2259 e->idx = sid->idx;
2260 e->cpu = sid->cpu;
2261 e->tid = sid->tid;
2262 }
2263 }
2264
2265 sz = sizeof(struct id_index_event) + nr * sizeof(struct id_index_entry);
2266 ev->id_index.header.size = sz;
2267 ev->id_index.nr = nr;
2268
2269 err = process(tool, ev, NULL, machine);
2270out_err:
2271 free(ev);
2272
2273 return err;
2274}
Linux 6.x block layer and io_uring tree(s)