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perf tools: Add event_update user level event
[deliverable/linux.git] / tools / perf / util / session.c
CommitLineData
94c744b6 1#include <linux/kernel.h>
4e319027 2#include <traceevent/event-parse.h>
94c744b6 3
ba21594c 4#include <byteswap.h>
94c744b6
ACM		 5#include <unistd.h>
6#include <sys/types.h>
a41794cd 7#include <sys/mman.h>
94c744b6 8
e248de33
ACM		 9#include "evlist.h"
10#include "evsel.h"
94c744b6 11#include "session.h"
45694aa7 12#include "tool.h"
a328626b 13#include "sort.h"
94c744b6 14#include "util.h"
5d67be97 15#include "cpumap.h"
0f6a3015 16#include "perf_regs.h"
b0a45203 17#include "asm/bug.h"
c446870d 18#include "auxtrace.h"
a5499b37 19#include "thread-stack.h"
94c744b6 20
c446870d
AH		 21static int perf_session__deliver_event(struct perf_session *session,
22 union perf_event *event,
23 struct perf_sample *sample,
24 struct perf_tool *tool,
25 u64 file_offset);
d10eb1eb 26
316c7136 27static int perf_session__open(struct perf_session *session)
94c744b6 28{
316c7136 29 struct perf_data_file *file = session->file;
8dc58101 30
316c7136 31 if (perf_session__read_header(session) < 0) {
e87b4911 32 pr_err("incompatible file format (rerun with -v to learn more)\n");
6a4d98d7 33 return -1;
94c744b6
ACM		 34 }
35
cc9784bd
JO		 36 if (perf_data_file__is_pipe(file))
37 return 0;
38
316c7136 39 if (!perf_evlist__valid_sample_type(session->evlist)) {
e87b4911 40 pr_err("non matching sample_type\n");
6a4d98d7 41 return -1;
c2a70653
ACM		 42 }
43
316c7136 44 if (!perf_evlist__valid_sample_id_all(session->evlist)) {
e87b4911 45 pr_err("non matching sample_id_all\n");
6a4d98d7 46 return -1;
c2a70653
ACM		 47 }
48
316c7136 49 if (!perf_evlist__valid_read_format(session->evlist)) {
e87b4911 50 pr_err("non matching read_format\n");
6a4d98d7 51 return -1;
9ede473c
JO		 52 }
53
94c744b6 54 return 0;
94c744b6
ACM		 55}
56
7b56cce2 57void perf_session__set_id_hdr_size(struct perf_session *session)
9c90a61c 58{
7b56cce2
ACM		 59 u16 id_hdr_size = perf_evlist__id_hdr_size(session->evlist);
60
7b56cce2 61 machines__set_id_hdr_size(&session->machines, id_hdr_size);
9c90a61c
ACM		 62}
63
316c7136 64int perf_session__create_kernel_maps(struct perf_session *session)
a1645ce1 65{
316c7136 66 int ret = machine__create_kernel_maps(&session->machines.host);
a1645ce1 67
a1645ce1 68 if (ret >= 0)
316c7136 69 ret = machines__create_guest_kernel_maps(&session->machines);
a1645ce1
ZY		 70 return ret;
71}
72
316c7136 73static void perf_session__destroy_kernel_maps(struct perf_session *session)
076c6e45 74{
316c7136 75 machines__destroy_kernel_maps(&session->machines);
076c6e45
ACM		 76}
77
cfe1c414
AH		 78static bool perf_session__has_comm_exec(struct perf_session *session)
79{
80 struct perf_evsel *evsel;
81
82 evlist__for_each(session->evlist, evsel) {
83 if (evsel->attr.comm_exec)
84 return true;
85 }
86
87 return false;
88}
89
90static void perf_session__set_comm_exec(struct perf_session *session)
91{
92 bool comm_exec = perf_session__has_comm_exec(session);
93
94 machines__set_comm_exec(&session->machines, comm_exec);
95}
96
d10eb1eb 97static int ordered_events__deliver_event(struct ordered_events *oe,
9870d780 98 struct ordered_event *event)
d10eb1eb 99{
9870d780
ACM		 100 struct perf_sample sample;
101 struct perf_session *session = container_of(oe, struct perf_session,
102 ordered_events);
103 int ret = perf_evlist__parse_sample(session->evlist, event->event, &sample);
104
105 if (ret) {
106 pr_err("Can't parse sample, err = %d\n", ret);
107 return ret;
108 }
109
c446870d
AH		 110 return perf_session__deliver_event(session, event->event, &sample,
111 session->tool, event->file_offset);
d10eb1eb
ACM		 112}
113
f5fc1412
JO		 114struct perf_session *perf_session__new(struct perf_data_file *file,
115 bool repipe, struct perf_tool *tool)
94c744b6 116{
316c7136 117 struct perf_session *session = zalloc(sizeof(*session));
efad1415 118
316c7136 119 if (!session)
94c744b6
ACM		 120 goto out;
121
316c7136 122 session->repipe = repipe;
9870d780 123 session->tool = tool;
99fa2984 124 INIT_LIST_HEAD(&session->auxtrace_index);
316c7136 125 machines__init(&session->machines);
9870d780 126 ordered_events__init(&session->ordered_events, ordered_events__deliver_event);
94c744b6 127
6a4d98d7
JO		 128 if (file) {
129 if (perf_data_file__open(file))
64abebf7 130 goto out_delete;
6a4d98d7 131
316c7136 132 session->file = file;
6a4d98d7
JO		 133
134 if (perf_data_file__is_read(file)) {
316c7136 135 if (perf_session__open(session) < 0)
6a4d98d7
JO		 136 goto out_close;
137
316c7136 138 perf_session__set_id_hdr_size(session);
cfe1c414 139 perf_session__set_comm_exec(session);
6a4d98d7 140 }
4cde998d
ACM		 141 } else {
142 session->machines.host.env = &perf_env;
6a4d98d7
JO		 143 }
144
145 if (!file || perf_data_file__is_write(file)) {
64abebf7
ACM		 146 /*
147 * In O_RDONLY mode this will be performed when reading the
8115d60c 148 * kernel MMAP event, in perf_event__process_mmap().
64abebf7 149 */
316c7136 150 if (perf_session__create_kernel_maps(session) < 0)
a5c2a4c9 151 pr_warning("Cannot read kernel map\n");
64abebf7 152 }
d549c769 153
45694aa7 154 if (tool && tool->ordering_requires_timestamps &&
0a8cb85c 155 tool->ordered_events && !perf_evlist__sample_id_all(session->evlist)) {
21ef97f0 156 dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n");
0a8cb85c 157 tool->ordered_events = false;
d10eb1eb 158 }
21ef97f0 159
316c7136 160 return session;
6a4d98d7
JO		 161
162 out_close:
163 perf_data_file__close(file);
164 out_delete:
316c7136 165 perf_session__delete(session);
6a4d98d7 166 out:
4aa65636 167 return NULL;
94c744b6
ACM		 168}
169
b424eba2
ACM		 170static void perf_session__delete_threads(struct perf_session *session)
171{
876650e6 172 machine__delete_threads(&session->machines.host);
b424eba2
ACM		 173}
174
316c7136 175void perf_session__delete(struct perf_session *session)
94c744b6 176{
c446870d 177 auxtrace__free(session);
99fa2984 178 auxtrace_index__free(&session->auxtrace_index);
316c7136 179 perf_session__destroy_kernel_maps(session);
316c7136 180 perf_session__delete_threads(session);
f0ce888c 181 perf_env__exit(&session->header.env);
316c7136
ACM		 182 machines__exit(&session->machines);
183 if (session->file)
184 perf_data_file__close(session->file);
185 free(session);
94c744b6 186}
a328626b 187
47c3d109
AH		 188static int process_event_synth_tracing_data_stub(struct perf_tool *tool
189 __maybe_unused,
190 union perf_event *event
1d037ca1
IT		 191 __maybe_unused,
192 struct perf_session *session
193 __maybe_unused)
d20deb64
ACM		 194{
195 dump_printf(": unhandled!\n");
196 return 0;
197}
198
47c3d109
AH		 199static int process_event_synth_attr_stub(struct perf_tool *tool __maybe_unused,
200 union perf_event *event __maybe_unused,
1d037ca1
IT		 201 struct perf_evlist **pevlist
202 __maybe_unused)
10d0f086
ACM		 203{
204 dump_printf(": unhandled!\n");
205 return 0;
206}
207
ffe77725
JO		 208static int process_event_synth_event_update_stub(struct perf_tool *tool __maybe_unused,
209 union perf_event *event __maybe_unused,
210 struct perf_evlist **pevlist
211 __maybe_unused)
212{
213 dump_printf(": unhandled!\n");
214 return 0;
215}
216
1d037ca1
IT		 217static int process_event_sample_stub(struct perf_tool *tool __maybe_unused,
218 union perf_event *event __maybe_unused,
219 struct perf_sample *sample __maybe_unused,
220 struct perf_evsel *evsel __maybe_unused,
221 struct machine *machine __maybe_unused)
9e69c210
ACM		 222{
223 dump_printf(": unhandled!\n");
224 return 0;
225}
226
1d037ca1
IT		 227static int process_event_stub(struct perf_tool *tool __maybe_unused,
228 union perf_event *event __maybe_unused,
229 struct perf_sample *sample __maybe_unused,
230 struct machine *machine __maybe_unused)
06aae590
ACM		 231{
232 dump_printf(": unhandled!\n");
233 return 0;
234}
235
d704ebda
ACM		 236static int process_build_id_stub(struct perf_tool *tool __maybe_unused,
237 union perf_event *event __maybe_unused,
238 struct perf_session *session __maybe_unused)
239{
240 dump_printf(": unhandled!\n");
241 return 0;
242}
243
1d037ca1
IT		 244static int process_finished_round_stub(struct perf_tool *tool __maybe_unused,
245 union perf_event *event __maybe_unused,
d704ebda 246 struct ordered_events *oe __maybe_unused)
743eb868
ACM		 247{
248 dump_printf(": unhandled!\n");
249 return 0;
250}
251
45694aa7 252static int process_finished_round(struct perf_tool *tool,
d20deb64 253 union perf_event *event,
d704ebda 254 struct ordered_events *oe);
d6b17beb 255
3c659eed
AH		 256static int process_id_index_stub(struct perf_tool *tool __maybe_unused,
257 union perf_event *event __maybe_unused,
258 struct perf_session *perf_session
259 __maybe_unused)
260{
261 dump_printf(": unhandled!\n");
262 return 0;
263}
264
a16ac023
AH		 265static int process_event_auxtrace_info_stub(struct perf_tool *tool __maybe_unused,
266 union perf_event *event __maybe_unused,
267 struct perf_session *session __maybe_unused)
268{
269 dump_printf(": unhandled!\n");
270 return 0;
271}
272
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
288static s64 process_event_auxtrace_stub(struct perf_tool *tool __maybe_unused,
289 union perf_event *event,
290 struct perf_session *session
291 __maybe_unused)
292{
293 dump_printf(": unhandled!\n");
294 if (perf_data_file__is_pipe(session->file))
295 skipn(perf_data_file__fd(session->file), event->auxtrace.size);
296 return event->auxtrace.size;
297}
298
e9bf54d2
AH		 299static
300int process_event_auxtrace_error_stub(struct perf_tool *tool __maybe_unused,
301 union perf_event *event __maybe_unused,
302 struct perf_session *session __maybe_unused)
303{
304 dump_printf(": unhandled!\n");
305 return 0;
306}
307
5f3339d2
JO		 308
309static
310int process_event_thread_map_stub(struct perf_tool *tool __maybe_unused,
311 union perf_event *event __maybe_unused,
312 struct perf_session *session __maybe_unused)
313{
314 dump_printf(": unhandled!\n");
315 return 0;
316}
317
6640b6c2
JO		 318static
319int process_event_cpu_map_stub(struct perf_tool *tool __maybe_unused,
320 union perf_event *event __maybe_unused,
321 struct perf_session *session __maybe_unused)
322{
323 dump_printf(": unhandled!\n");
324 return 0;
325}
326
374fb9e3
JO		 327static
328int process_event_stat_config_stub(struct perf_tool *tool __maybe_unused,
329 union perf_event *event __maybe_unused,
330 struct perf_session *session __maybe_unused)
331{
332 dump_printf(": unhandled!\n");
333 return 0;
334}
335
d80518c9
JO		 336static int process_stat_stub(struct perf_tool *tool __maybe_unused,
337 union perf_event *event __maybe_unused,
338 struct perf_session *perf_session
339 __maybe_unused)
340{
341 dump_printf(": unhandled!\n");
342 return 0;
343}
344
2d8f0f18
JO		 345static int process_stat_round_stub(struct perf_tool *tool __maybe_unused,
346 union perf_event *event __maybe_unused,
347 struct perf_session *perf_session
348 __maybe_unused)
349{
350 dump_printf(": unhandled!\n");
351 return 0;
352}
353
9c501402 354void perf_tool__fill_defaults(struct perf_tool *tool)
06aae590 355{
45694aa7
ACM		 356 if (tool->sample == NULL)
357 tool->sample = process_event_sample_stub;
358 if (tool->mmap == NULL)
359 tool->mmap = process_event_stub;
6adb0b0a
DA		 360 if (tool->mmap2 == NULL)
361 tool->mmap2 = process_event_stub;
45694aa7
ACM		 362 if (tool->comm == NULL)
363 tool->comm = process_event_stub;
364 if (tool->fork == NULL)
365 tool->fork = process_event_stub;
366 if (tool->exit == NULL)
367 tool->exit = process_event_stub;
368 if (tool->lost == NULL)
369 tool->lost = perf_event__process_lost;
c4937a91
KL		 370 if (tool->lost_samples == NULL)
371 tool->lost_samples = perf_event__process_lost_samples;
4a96f7a0
AH		 372 if (tool->aux == NULL)
373 tool->aux = perf_event__process_aux;
0ad21f68
AH		 374 if (tool->itrace_start == NULL)
375 tool->itrace_start = perf_event__process_itrace_start;
0286039f
AH		 376 if (tool->context_switch == NULL)
377 tool->context_switch = perf_event__process_switch;
45694aa7
ACM		 378 if (tool->read == NULL)
379 tool->read = process_event_sample_stub;
380 if (tool->throttle == NULL)
381 tool->throttle = process_event_stub;
382 if (tool->unthrottle == NULL)
383 tool->unthrottle = process_event_stub;
384 if (tool->attr == NULL)
385 tool->attr = process_event_synth_attr_stub;
ffe77725
JO		 386 if (tool->event_update == NULL)
387 tool->event_update = process_event_synth_event_update_stub;
45694aa7
ACM		 388 if (tool->tracing_data == NULL)
389 tool->tracing_data = process_event_synth_tracing_data_stub;
390 if (tool->build_id == NULL)
d704ebda 391 tool->build_id = process_build_id_stub;
45694aa7 392 if (tool->finished_round == NULL) {
0a8cb85c 393 if (tool->ordered_events)
45694aa7 394 tool->finished_round = process_finished_round;
d6b17beb 395 else
45694aa7 396 tool->finished_round = process_finished_round_stub;
d6b17beb 397 }
3c659eed
AH		 398 if (tool->id_index == NULL)
399 tool->id_index = process_id_index_stub;
a16ac023
AH		 400 if (tool->auxtrace_info == NULL)
401 tool->auxtrace_info = process_event_auxtrace_info_stub;
402 if (tool->auxtrace == NULL)
403 tool->auxtrace = process_event_auxtrace_stub;
e9bf54d2
AH		 404 if (tool->auxtrace_error == NULL)
405 tool->auxtrace_error = process_event_auxtrace_error_stub;
5f3339d2
JO		 406 if (tool->thread_map == NULL)
407 tool->thread_map = process_event_thread_map_stub;
6640b6c2
JO		 408 if (tool->cpu_map == NULL)
409 tool->cpu_map = process_event_cpu_map_stub;
374fb9e3
JO		 410 if (tool->stat_config == NULL)
411 tool->stat_config = process_event_stat_config_stub;
d80518c9
JO		 412 if (tool->stat == NULL)
413 tool->stat = process_stat_stub;
2d8f0f18
JO		 414 if (tool->stat_round == NULL)
415 tool->stat_round = process_stat_round_stub;
06aae590 416}
48000a1a 417
268fb20f
JO		 418static void swap_sample_id_all(union perf_event *event, void *data)
419{
420 void *end = (void *) event + event->header.size;
421 int size = end - data;
422
423 BUG_ON(size % sizeof(u64));
424 mem_bswap_64(data, size);
425}
426
427static void perf_event__all64_swap(union perf_event *event,
1d037ca1 428 bool sample_id_all __maybe_unused)
ba21594c 429{
8115d60c
ACM		 430 struct perf_event_header *hdr = &event->header;
431 mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr));
ba21594c
ACM		 432}
433
268fb20f 434static void perf_event__comm_swap(union perf_event *event, bool sample_id_all)
ba21594c 435{
8115d60c
ACM		 436 event->comm.pid = bswap_32(event->comm.pid);
437 event->comm.tid = bswap_32(event->comm.tid);
268fb20f
JO		 438
439 if (sample_id_all) {
440 void *data = &event->comm.comm;
441
9ac3e487 442 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
268fb20f
JO		 443 swap_sample_id_all(event, data);
444 }
ba21594c
ACM		 445}
446
268fb20f
JO		 447static void perf_event__mmap_swap(union perf_event *event,
448 bool sample_id_all)
ba21594c 449{
8115d60c
ACM		 450 event->mmap.pid = bswap_32(event->mmap.pid);
451 event->mmap.tid = bswap_32(event->mmap.tid);
452 event->mmap.start = bswap_64(event->mmap.start);
453 event->mmap.len = bswap_64(event->mmap.len);
454 event->mmap.pgoff = bswap_64(event->mmap.pgoff);
268fb20f
JO		 455
456 if (sample_id_all) {
457 void *data = &event->mmap.filename;
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
5c5e854b
SE		 464static void perf_event__mmap2_swap(union perf_event *event,
465 bool sample_id_all)
466{
467 event->mmap2.pid = bswap_32(event->mmap2.pid);
468 event->mmap2.tid = bswap_32(event->mmap2.tid);
469 event->mmap2.start = bswap_64(event->mmap2.start);
470 event->mmap2.len = bswap_64(event->mmap2.len);
471 event->mmap2.pgoff = bswap_64(event->mmap2.pgoff);
472 event->mmap2.maj = bswap_32(event->mmap2.maj);
473 event->mmap2.min = bswap_32(event->mmap2.min);
474 event->mmap2.ino = bswap_64(event->mmap2.ino);
475
476 if (sample_id_all) {
477 void *data = &event->mmap2.filename;
478
479 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
480 swap_sample_id_all(event, data);
481 }
482}
268fb20f 483static void perf_event__task_swap(union perf_event *event, bool sample_id_all)
ba21594c 484{
8115d60c
ACM		 485 event->fork.pid = bswap_32(event->fork.pid);
486 event->fork.tid = bswap_32(event->fork.tid);
487 event->fork.ppid = bswap_32(event->fork.ppid);
488 event->fork.ptid = bswap_32(event->fork.ptid);
489 event->fork.time = bswap_64(event->fork.time);
268fb20f
JO		 490
491 if (sample_id_all)
492 swap_sample_id_all(event, &event->fork + 1);
ba21594c
ACM		 493}
494
268fb20f 495static void perf_event__read_swap(union perf_event *event, bool sample_id_all)
ba21594c 496{
8115d60c
ACM		 497 event->read.pid = bswap_32(event->read.pid);
498 event->read.tid = bswap_32(event->read.tid);
499 event->read.value = bswap_64(event->read.value);
500 event->read.time_enabled = bswap_64(event->read.time_enabled);
501 event->read.time_running = bswap_64(event->read.time_running);
502 event->read.id = bswap_64(event->read.id);
268fb20f
JO		 503
504 if (sample_id_all)
505 swap_sample_id_all(event, &event->read + 1);
ba21594c
ACM		 506}
507
4a96f7a0
AH		 508static void perf_event__aux_swap(union perf_event *event, bool sample_id_all)
509{
510 event->aux.aux_offset = bswap_64(event->aux.aux_offset);
511 event->aux.aux_size = bswap_64(event->aux.aux_size);
512 event->aux.flags = bswap_64(event->aux.flags);
513
514 if (sample_id_all)
515 swap_sample_id_all(event, &event->aux + 1);
516}
517
0ad21f68
AH		 518static void perf_event__itrace_start_swap(union perf_event *event,
519 bool sample_id_all)
520{
521 event->itrace_start.pid = bswap_32(event->itrace_start.pid);
522 event->itrace_start.tid = bswap_32(event->itrace_start.tid);
523
524 if (sample_id_all)
525 swap_sample_id_all(event, &event->itrace_start + 1);
526}
527
0286039f
AH		 528static void perf_event__switch_swap(union perf_event *event, bool sample_id_all)
529{
530 if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE) {
531 event->context_switch.next_prev_pid =
532 bswap_32(event->context_switch.next_prev_pid);
533 event->context_switch.next_prev_tid =
534 bswap_32(event->context_switch.next_prev_tid);
535 }
536
537 if (sample_id_all)
538 swap_sample_id_all(event, &event->context_switch + 1);
539}
540
dd96c46b
JO		 541static void perf_event__throttle_swap(union perf_event *event,
542 bool sample_id_all)
543{
544 event->throttle.time = bswap_64(event->throttle.time);
545 event->throttle.id = bswap_64(event->throttle.id);
546 event->throttle.stream_id = bswap_64(event->throttle.stream_id);
547
548 if (sample_id_all)
549 swap_sample_id_all(event, &event->throttle + 1);
550}
551
e108c66e
JO		 552static u8 revbyte(u8 b)
553{
554 int rev = (b >> 4) | ((b & 0xf) << 4);
555 rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2);
556 rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1);
557 return (u8) rev;
558}
559
560/*
561 * XXX this is hack in attempt to carry flags bitfield
562 * throught endian village. ABI says:
563 *
564 * Bit-fields are allocated from right to left (least to most significant)
565 * on little-endian implementations and from left to right (most to least
566 * significant) on big-endian implementations.
567 *
568 * The above seems to be byte specific, so we need to reverse each
569 * byte of the bitfield. 'Internet' also says this might be implementation
570 * specific and we probably need proper fix and carry perf_event_attr
571 * bitfield flags in separate data file FEAT_ section. Thought this seems
572 * to work for now.
573 */
574static void swap_bitfield(u8 *p, unsigned len)
575{
576 unsigned i;
577
578 for (i = 0; i < len; i++) {
579 *p = revbyte(*p);
580 p++;
581 }
582}
583
eda3913b
DA		 584/* exported for swapping attributes in file header */
585void perf_event__attr_swap(struct perf_event_attr *attr)
586{
587 attr->type = bswap_32(attr->type);
588 attr->size = bswap_32(attr->size);
b30b6172
WN		 589
590#define bswap_safe(f, n) \
591 (attr->size > (offsetof(struct perf_event_attr, f) + \
592 sizeof(attr->f) * (n)))
593#define bswap_field(f, sz) \
594do { \
595 if (bswap_safe(f, 0)) \
596 attr->f = bswap_##sz(attr->f); \
597} while(0)
598#define bswap_field_32(f) bswap_field(f, 32)
599#define bswap_field_64(f) bswap_field(f, 64)
600
601 bswap_field_64(config);
602 bswap_field_64(sample_period);
603 bswap_field_64(sample_type);
604 bswap_field_64(read_format);
605 bswap_field_32(wakeup_events);
606 bswap_field_32(bp_type);
607 bswap_field_64(bp_addr);
608 bswap_field_64(bp_len);
609 bswap_field_64(branch_sample_type);
610 bswap_field_64(sample_regs_user);
611 bswap_field_32(sample_stack_user);
612 bswap_field_32(aux_watermark);
613
614 /*
615 * After read_format are bitfields. Check read_format because
616 * we are unable to use offsetof on bitfield.
617 */
618 if (bswap_safe(read_format, 1))
619 swap_bitfield((u8 *) (&attr->read_format + 1),
620 sizeof(u64));
621#undef bswap_field_64
622#undef bswap_field_32
623#undef bswap_field
624#undef bswap_safe
eda3913b
DA		 625}
626
268fb20f 627static void perf_event__hdr_attr_swap(union perf_event *event,
1d037ca1 628 bool sample_id_all __maybe_unused)
2c46dbb5
TZ		 629{
630 size_t size;
631
eda3913b 632 perf_event__attr_swap(&event->attr.attr);
2c46dbb5 633
8115d60c
ACM		 634 size = event->header.size;
635 size -= (void *)&event->attr.id - (void *)event;
636 mem_bswap_64(event->attr.id, size);
2c46dbb5
TZ		 637}
638
ffe77725
JO		 639static void perf_event__event_update_swap(union perf_event *event,
640 bool sample_id_all __maybe_unused)
641{
642 event->event_update.type = bswap_64(event->event_update.type);
643 event->event_update.id = bswap_64(event->event_update.id);
644}
645
268fb20f 646static void perf_event__event_type_swap(union perf_event *event,
1d037ca1 647 bool sample_id_all __maybe_unused)
cd19a035 648{
8115d60c
ACM		 649 event->event_type.event_type.event_id =
650 bswap_64(event->event_type.event_type.event_id);
cd19a035
TZ		 651}
652
268fb20f 653static void perf_event__tracing_data_swap(union perf_event *event,
1d037ca1 654 bool sample_id_all __maybe_unused)
9215545e 655{
8115d60c 656 event->tracing_data.size = bswap_32(event->tracing_data.size);
9215545e
TZ		 657}
658
a16ac023
AH		 659static void perf_event__auxtrace_info_swap(union perf_event *event,
660 bool sample_id_all __maybe_unused)
661{
662 size_t size;
663
664 event->auxtrace_info.type = bswap_32(event->auxtrace_info.type);
665
666 size = event->header.size;
667 size -= (void *)&event->auxtrace_info.priv - (void *)event;
668 mem_bswap_64(event->auxtrace_info.priv, size);
669}
670
671static void perf_event__auxtrace_swap(union perf_event *event,
672 bool sample_id_all __maybe_unused)
673{
674 event->auxtrace.size = bswap_64(event->auxtrace.size);
675 event->auxtrace.offset = bswap_64(event->auxtrace.offset);
676 event->auxtrace.reference = bswap_64(event->auxtrace.reference);
677 event->auxtrace.idx = bswap_32(event->auxtrace.idx);
678 event->auxtrace.tid = bswap_32(event->auxtrace.tid);
679 event->auxtrace.cpu = bswap_32(event->auxtrace.cpu);
680}
681
e9bf54d2
AH		 682static void perf_event__auxtrace_error_swap(union perf_event *event,
683 bool sample_id_all __maybe_unused)
684{
685 event->auxtrace_error.type = bswap_32(event->auxtrace_error.type);
686 event->auxtrace_error.code = bswap_32(event->auxtrace_error.code);
687 event->auxtrace_error.cpu = bswap_32(event->auxtrace_error.cpu);
688 event->auxtrace_error.pid = bswap_32(event->auxtrace_error.pid);
689 event->auxtrace_error.tid = bswap_32(event->auxtrace_error.tid);
690 event->auxtrace_error.ip = bswap_64(event->auxtrace_error.ip);
691}
692
5f3339d2
JO		 693static void perf_event__thread_map_swap(union perf_event *event,
694 bool sample_id_all __maybe_unused)
695{
696 unsigned i;
697
698 event->thread_map.nr = bswap_64(event->thread_map.nr);
699
700 for (i = 0; i < event->thread_map.nr; i++)
701 event->thread_map.entries[i].pid = bswap_64(event->thread_map.entries[i].pid);
702}
703
6640b6c2
JO		 704static void perf_event__cpu_map_swap(union perf_event *event,
705 bool sample_id_all __maybe_unused)
706{
707 struct cpu_map_data *data = &event->cpu_map.data;
708 struct cpu_map_entries *cpus;
709 struct cpu_map_mask *mask;
710 unsigned i;
711
712 data->type = bswap_64(data->type);
713
714 switch (data->type) {
715 case PERF_CPU_MAP__CPUS:
716 cpus = (struct cpu_map_entries *)data->data;
717
718 cpus->nr = bswap_16(cpus->nr);
719
720 for (i = 0; i < cpus->nr; i++)
721 cpus->cpu[i] = bswap_16(cpus->cpu[i]);
722 break;
723 case PERF_CPU_MAP__MASK:
724 mask = (struct cpu_map_mask *) data->data;
725
726 mask->nr = bswap_16(mask->nr);
727 mask->long_size = bswap_16(mask->long_size);
728
729 switch (mask->long_size) {
730 case 4: mem_bswap_32(&mask->mask, mask->nr); break;
731 case 8: mem_bswap_64(&mask->mask, mask->nr); break;
732 default:
733 pr_err("cpu_map swap: unsupported long size\n");
734 }
735 default:
736 break;
737 }
738}
739
374fb9e3
JO		 740static void perf_event__stat_config_swap(union perf_event *event,
741 bool sample_id_all __maybe_unused)
742{
743 u64 size;
744
745 size = event->stat_config.nr * sizeof(event->stat_config.data[0]);
746 size += 1; /* nr item itself */
747 mem_bswap_64(&event->stat_config.nr, size);
748}
749
d80518c9
JO		 750static void perf_event__stat_swap(union perf_event *event,
751 bool sample_id_all __maybe_unused)
752{
753 event->stat.id = bswap_64(event->stat.id);
754 event->stat.thread = bswap_32(event->stat.thread);
755 event->stat.cpu = bswap_32(event->stat.cpu);
756 event->stat.val = bswap_64(event->stat.val);
757 event->stat.ena = bswap_64(event->stat.ena);
758 event->stat.run = bswap_64(event->stat.run);
759}
760
2d8f0f18
JO		 761static void perf_event__stat_round_swap(union perf_event *event,
762 bool sample_id_all __maybe_unused)
763{
764 event->stat_round.type = bswap_64(event->stat_round.type);
765 event->stat_round.time = bswap_64(event->stat_round.time);
766}
767
268fb20f
JO		 768typedef void (*perf_event__swap_op)(union perf_event *event,
769 bool sample_id_all);
ba21594c 770
8115d60c
ACM		 771static perf_event__swap_op perf_event__swap_ops[] = {
772 [PERF_RECORD_MMAP] = perf_event__mmap_swap,
5c5e854b 773 [PERF_RECORD_MMAP2] = perf_event__mmap2_swap,
8115d60c
ACM		 774 [PERF_RECORD_COMM] = perf_event__comm_swap,
775 [PERF_RECORD_FORK] = perf_event__task_swap,
776 [PERF_RECORD_EXIT] = perf_event__task_swap,
777 [PERF_RECORD_LOST] = perf_event__all64_swap,
778 [PERF_RECORD_READ] = perf_event__read_swap,
dd96c46b
JO		 779 [PERF_RECORD_THROTTLE] = perf_event__throttle_swap,
780 [PERF_RECORD_UNTHROTTLE] = perf_event__throttle_swap,
8115d60c 781 [PERF_RECORD_SAMPLE] = perf_event__all64_swap,
4a96f7a0 782 [PERF_RECORD_AUX] = perf_event__aux_swap,
0ad21f68 783 [PERF_RECORD_ITRACE_START] = perf_event__itrace_start_swap,
c4937a91 784 [PERF_RECORD_LOST_SAMPLES] = perf_event__all64_swap,
0286039f
AH		 785 [PERF_RECORD_SWITCH] = perf_event__switch_swap,
786 [PERF_RECORD_SWITCH_CPU_WIDE] = perf_event__switch_swap,
eda3913b 787 [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap,
8115d60c
ACM		 788 [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap,
789 [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap,
790 [PERF_RECORD_HEADER_BUILD_ID] = NULL,
3c659eed 791 [PERF_RECORD_ID_INDEX] = perf_event__all64_swap,
a16ac023
AH		 792 [PERF_RECORD_AUXTRACE_INFO] = perf_event__auxtrace_info_swap,
793 [PERF_RECORD_AUXTRACE] = perf_event__auxtrace_swap,
e9bf54d2 794 [PERF_RECORD_AUXTRACE_ERROR] = perf_event__auxtrace_error_swap,
5f3339d2 795 [PERF_RECORD_THREAD_MAP] = perf_event__thread_map_swap,
6640b6c2 796 [PERF_RECORD_CPU_MAP] = perf_event__cpu_map_swap,
374fb9e3 797 [PERF_RECORD_STAT_CONFIG] = perf_event__stat_config_swap,
d80518c9 798 [PERF_RECORD_STAT] = perf_event__stat_swap,
2d8f0f18 799 [PERF_RECORD_STAT_ROUND] = perf_event__stat_round_swap,
ffe77725 800 [PERF_RECORD_EVENT_UPDATE] = perf_event__event_update_swap,
8115d60c 801 [PERF_RECORD_HEADER_MAX] = NULL,
ba21594c
ACM		 802};
803
d6b17beb
FW		 804/*
805 * When perf record finishes a pass on every buffers, it records this pseudo
806 * event.
807 * We record the max timestamp t found in the pass n.
808 * Assuming these timestamps are monotonic across cpus, we know that if
809 * a buffer still has events with timestamps below t, they will be all
810 * available and then read in the pass n + 1.
811 * Hence when we start to read the pass n + 2, we can safely flush every
812 * events with timestamps below t.
813 *
814 * ============ PASS n =================
815 * CPU 0 | CPU 1
816 * |
817 * cnt1 timestamps | cnt2 timestamps
818 * 1 | 2
819 * 2 | 3
820 * - | 4 <--- max recorded
821 *
822 * ============ PASS n + 1 ==============
823 * CPU 0 | CPU 1
824 * |
825 * cnt1 timestamps | cnt2 timestamps
826 * 3 | 5
827 * 4 | 6
828 * 5 | 7 <---- max recorded
829 *
830 * Flush every events below timestamp 4
831 *
832 * ============ PASS n + 2 ==============
833 * CPU 0 | CPU 1
834 * |
835 * cnt1 timestamps | cnt2 timestamps
836 * 6 | 8
837 * 7 | 9
838 * - | 10
839 *
840 * Flush every events below timestamp 7
841 * etc...
842 */
b7b61cbe 843static int process_finished_round(struct perf_tool *tool __maybe_unused,
1d037ca1 844 union perf_event *event __maybe_unused,
d704ebda 845 struct ordered_events *oe)
d6b17beb 846{
5531e162
AH		 847 if (dump_trace)
848 fprintf(stdout, "\n");
b7b61cbe 849 return ordered_events__flush(oe, OE_FLUSH__ROUND);
d6b17beb
FW		 850}
851
b7b61cbe
ACM		 852int perf_session__queue_event(struct perf_session *s, union perf_event *event,
853 struct perf_sample *sample, u64 file_offset)
c61e52ee 854{
4a6b362f 855 return ordered_events__queue(&s->ordered_events, event, sample, file_offset);
640c03ce 856}
c61e52ee 857
384b6055 858static void callchain__lbr_callstack_printf(struct perf_sample *sample)
640c03ce 859{
384b6055
KL		 860 struct ip_callchain *callchain = sample->callchain;
861 struct branch_stack *lbr_stack = sample->branch_stack;
862 u64 kernel_callchain_nr = callchain->nr;
640c03ce 863 unsigned int i;
c61e52ee 864
384b6055
KL		 865 for (i = 0; i < kernel_callchain_nr; i++) {
866 if (callchain->ips[i] == PERF_CONTEXT_USER)
867 break;
868 }
869
870 if ((i != kernel_callchain_nr) && lbr_stack->nr) {
871 u64 total_nr;
872 /*
873 * LBR callstack can only get user call chain,
874 * i is kernel call chain number,
875 * 1 is PERF_CONTEXT_USER.
876 *
877 * The user call chain is stored in LBR registers.
878 * LBR are pair registers. The caller is stored
879 * in "from" register, while the callee is stored
880 * in "to" register.
881 * For example, there is a call stack
882 * "A"->"B"->"C"->"D".
883 * The LBR registers will recorde like
884 * "C"->"D", "B"->"C", "A"->"B".
885 * So only the first "to" register and all "from"
886 * registers are needed to construct the whole stack.
887 */
888 total_nr = i + 1 + lbr_stack->nr + 1;
889 kernel_callchain_nr = i + 1;
890
891 printf("... LBR call chain: nr:%" PRIu64 "\n", total_nr);
892
893 for (i = 0; i < kernel_callchain_nr; i++)
894 printf("..... %2d: %016" PRIx64 "\n",
895 i, callchain->ips[i]);
896
897 printf("..... %2d: %016" PRIx64 "\n",
898 (int)(kernel_callchain_nr), lbr_stack->entries[0].to);
899 for (i = 0; i < lbr_stack->nr; i++)
900 printf("..... %2d: %016" PRIx64 "\n",
901 (int)(i + kernel_callchain_nr + 1), lbr_stack->entries[i].from);
902 }
903}
904
905static void callchain__printf(struct perf_evsel *evsel,
906 struct perf_sample *sample)
907{
908 unsigned int i;
909 struct ip_callchain *callchain = sample->callchain;
910
911 if (has_branch_callstack(evsel))
912 callchain__lbr_callstack_printf(sample);
913
914 printf("... FP chain: nr:%" PRIu64 "\n", callchain->nr);
640c03ce 915
384b6055 916 for (i = 0; i < callchain->nr; i++)
9486aa38 917 printf("..... %2d: %016" PRIx64 "\n",
384b6055 918 i, callchain->ips[i]);
c61e52ee
FW		 919}
920
b5387528
RAV		 921static void branch_stack__printf(struct perf_sample *sample)
922{
923 uint64_t i;
924
925 printf("... branch stack: nr:%" PRIu64 "\n", sample->branch_stack->nr);
926
0e332f03
AK		 927 for (i = 0; i < sample->branch_stack->nr; i++) {
928 struct branch_entry *e = &sample->branch_stack->entries[i];
929
930 printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 " %hu cycles %s%s%s%s %x\n",
931 i, e->from, e->to,
932 e->flags.cycles,
933 e->flags.mispred ? "M" : " ",
934 e->flags.predicted ? "P" : " ",
935 e->flags.abort ? "A" : " ",
936 e->flags.in_tx ? "T" : " ",
937 (unsigned)e->flags.reserved);
938 }
b5387528
RAV		 939}
940
0f6a3015
JO		 941static void regs_dump__printf(u64 mask, u64 *regs)
942{
943 unsigned rid, i = 0;
944
945 for_each_set_bit(rid, (unsigned long *) &mask, sizeof(mask) * 8) {
946 u64 val = regs[i++];
947
948 printf(".... %-5s 0x%" PRIx64 "\n",
949 perf_reg_name(rid), val);
950 }
951}
952
6a21c0b5
SE		 953static const char *regs_abi[] = {
954 [PERF_SAMPLE_REGS_ABI_NONE] = "none",
955 [PERF_SAMPLE_REGS_ABI_32] = "32-bit",
956 [PERF_SAMPLE_REGS_ABI_64] = "64-bit",
957};
958
959static inline const char *regs_dump_abi(struct regs_dump *d)
960{
961 if (d->abi > PERF_SAMPLE_REGS_ABI_64)
962 return "unknown";
963
964 return regs_abi[d->abi];
965}
966
967static void regs__printf(const char *type, struct regs_dump *regs)
968{
969 u64 mask = regs->mask;
970
971 printf("... %s regs: mask 0x%" PRIx64 " ABI %s\n",
972 type,
973 mask,
974 regs_dump_abi(regs));
975
976 regs_dump__printf(mask, regs->regs);
977}
978
352ea45a 979static void regs_user__printf(struct perf_sample *sample)
0f6a3015
JO		 980{
981 struct regs_dump *user_regs = &sample->user_regs;
982
6a21c0b5
SE		 983 if (user_regs->regs)
984 regs__printf("user", user_regs);
985}
986
987static void regs_intr__printf(struct perf_sample *sample)
988{
989 struct regs_dump *intr_regs = &sample->intr_regs;
990
991 if (intr_regs->regs)
992 regs__printf("intr", intr_regs);
0f6a3015
JO		 993}
994
995static void stack_user__printf(struct stack_dump *dump)
996{
997 printf("... ustack: size %" PRIu64 ", offset 0x%x\n",
998 dump->size, dump->offset);
999}
1000
9fa8727a 1001static void perf_evlist__print_tstamp(struct perf_evlist *evlist,
8115d60c 1002 union perf_event *event,
8d50e5b4 1003 struct perf_sample *sample)
9c90a61c 1004{
9fa8727a 1005 u64 sample_type = __perf_evlist__combined_sample_type(evlist);
7f3be652 1006
9c90a61c 1007 if (event->header.type != PERF_RECORD_SAMPLE &&
9fa8727a 1008 !perf_evlist__sample_id_all(evlist)) {
9c90a61c
ACM		 1009 fputs("-1 -1 ", stdout);
1010 return;
1011 }
1012
7f3be652 1013 if ((sample_type & PERF_SAMPLE_CPU))
9c90a61c
ACM		 1014 printf("%u ", sample->cpu);
1015
7f3be652 1016 if (sample_type & PERF_SAMPLE_TIME)
9486aa38 1017 printf("%" PRIu64 " ", sample->time);
9c90a61c
ACM		 1018}
1019
9ede473c
JO		 1020static void sample_read__printf(struct perf_sample *sample, u64 read_format)
1021{
1022 printf("... sample_read:\n");
1023
1024 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
1025 printf("...... time enabled %016" PRIx64 "\n",
1026 sample->read.time_enabled);
1027
1028 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
1029 printf("...... time running %016" PRIx64 "\n",
1030 sample->read.time_running);
1031
1032 if (read_format & PERF_FORMAT_GROUP) {
1033 u64 i;
1034
1035 printf(".... group nr %" PRIu64 "\n", sample->read.group.nr);
1036
1037 for (i = 0; i < sample->read.group.nr; i++) {
1038 struct sample_read_value *value;
1039
1040 value = &sample->read.group.values[i];
1041 printf("..... id %016" PRIx64
1042 ", value %016" PRIx64 "\n",
1043 value->id, value->value);
1044 }
1045 } else
1046 printf("..... id %016" PRIx64 ", value %016" PRIx64 "\n",
1047 sample->read.one.id, sample->read.one.value);
1048}
1049
9fa8727a 1050static void dump_event(struct perf_evlist *evlist, union perf_event *event,
8d50e5b4 1051 u64 file_offset, struct perf_sample *sample)
9aefcab0
TG		 1052{
1053 if (!dump_trace)
1054 return;
1055
9486aa38
ACM		 1056 printf("\n%#" PRIx64 " [%#x]: event: %d\n",
1057 file_offset, event->header.size, event->header.type);
9aefcab0
TG		 1058
1059 trace_event(event);
1060
1061 if (sample)
9fa8727a 1062 perf_evlist__print_tstamp(evlist, event, sample);
9aefcab0 1063
9486aa38 1064 printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset,
8115d60c 1065 event->header.size, perf_event__name(event->header.type));
9aefcab0
TG		 1066}
1067
0f6a3015 1068static void dump_sample(struct perf_evsel *evsel, union perf_event *event,
8d50e5b4 1069 struct perf_sample *sample)
9aefcab0 1070{
7f3be652
ACM		 1071 u64 sample_type;
1072
ddbc24b7
ACM		 1073 if (!dump_trace)
1074 return;
1075
0ea590ae 1076 printf("(IP, 0x%x): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n",
9486aa38 1077 event->header.misc, sample->pid, sample->tid, sample->ip,
7cec0922 1078 sample->period, sample->addr);
9aefcab0 1079
0f6a3015 1080 sample_type = evsel->attr.sample_type;
7f3be652
ACM		 1081
1082 if (sample_type & PERF_SAMPLE_CALLCHAIN)
384b6055 1083 callchain__printf(evsel, sample);
b5387528 1084
384b6055 1085 if ((sample_type & PERF_SAMPLE_BRANCH_STACK) && !has_branch_callstack(evsel))
b5387528 1086 branch_stack__printf(sample);
0f6a3015
JO		 1087
1088 if (sample_type & PERF_SAMPLE_REGS_USER)
352ea45a 1089 regs_user__printf(sample);
0f6a3015 1090
6a21c0b5
SE		 1091 if (sample_type & PERF_SAMPLE_REGS_INTR)
1092 regs_intr__printf(sample);
1093
0f6a3015
JO		 1094 if (sample_type & PERF_SAMPLE_STACK_USER)
1095 stack_user__printf(&sample->user_stack);
05484298
AK		 1096
1097 if (sample_type & PERF_SAMPLE_WEIGHT)
1098 printf("... weight: %" PRIu64 "\n", sample->weight);
98a3b32c
SE		 1099
1100 if (sample_type & PERF_SAMPLE_DATA_SRC)
1101 printf(" . data_src: 0x%"PRIx64"\n", sample->data_src);
9ede473c 1102
475eeab9
AK		 1103 if (sample_type & PERF_SAMPLE_TRANSACTION)
1104 printf("... transaction: %" PRIx64 "\n", sample->transaction);
1105
9ede473c
JO		 1106 if (sample_type & PERF_SAMPLE_READ)
1107 sample_read__printf(sample, evsel->attr.read_format);
9aefcab0
TG		 1108}
1109
54245fdc 1110static struct machine *machines__find_for_cpumode(struct machines *machines,
ef89325f
AH		 1111 union perf_event *event,
1112 struct perf_sample *sample)
743eb868
ACM		 1113{
1114 const u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
ad85ace0 1115 struct machine *machine;
743eb868 1116
7c0f4a41
DA		 1117 if (perf_guest &&
1118 ((cpumode == PERF_RECORD_MISC_GUEST_KERNEL) ||
1119 (cpumode == PERF_RECORD_MISC_GUEST_USER))) {
7fb0a5ee
ND		 1120 u32 pid;
1121
5c5e854b
SE		 1122 if (event->header.type == PERF_RECORD_MMAP
1123 || event->header.type == PERF_RECORD_MMAP2)
7fb0a5ee
ND		 1124 pid = event->mmap.pid;
1125 else
ef89325f 1126 pid = sample->pid;
7fb0a5ee 1127
54245fdc 1128 machine = machines__find(machines, pid);
ad85ace0 1129 if (!machine)
54245fdc 1130 machine = machines__find(machines, DEFAULT_GUEST_KERNEL_ID);
ad85ace0 1131 return machine;
7fb0a5ee 1132 }
743eb868 1133
54245fdc 1134 return &machines->host;
743eb868
ACM		 1135}
1136
313e53b0 1137static int deliver_sample_value(struct perf_evlist *evlist,
e4caec0d
JO		 1138 struct perf_tool *tool,
1139 union perf_event *event,
1140 struct perf_sample *sample,
1141 struct sample_read_value *v,
1142 struct machine *machine)
1143{
313e53b0 1144 struct perf_sample_id *sid = perf_evlist__id2sid(evlist, v->id);
e4caec0d 1145
e4caec0d
JO		 1146 if (sid) {
1147 sample->id = v->id;
1148 sample->period = v->value - sid->period;
1149 sid->period = v->value;
1150 }
1151
1152 if (!sid || sid->evsel == NULL) {
313e53b0 1153 ++evlist->stats.nr_unknown_id;
e4caec0d
JO		 1154 return 0;
1155 }
1156
1157 return tool->sample(tool, event, sample, sid->evsel, machine);
1158}
1159
313e53b0 1160static int deliver_sample_group(struct perf_evlist *evlist,
e4caec0d
JO		 1161 struct perf_tool *tool,
1162 union perf_event *event,
1163 struct perf_sample *sample,
1164 struct machine *machine)
1165{
1166 int ret = -EINVAL;
1167 u64 i;
1168
1169 for (i = 0; i < sample->read.group.nr; i++) {
313e53b0 1170 ret = deliver_sample_value(evlist, tool, event, sample,
e4caec0d
JO		 1171 &sample->read.group.values[i],
1172 machine);
1173 if (ret)
1174 break;
1175 }
1176
1177 return ret;
1178}
1179
1180static int
313e53b0 1181 perf_evlist__deliver_sample(struct perf_evlist *evlist,
e4caec0d
JO		 1182 struct perf_tool *tool,
1183 union perf_event *event,
1184 struct perf_sample *sample,
1185 struct perf_evsel *evsel,
1186 struct machine *machine)
1187{
1188 /* We know evsel != NULL. */
1189 u64 sample_type = evsel->attr.sample_type;
1190 u64 read_format = evsel->attr.read_format;
1191
1192 /* Standard sample delievery. */
1193 if (!(sample_type & PERF_SAMPLE_READ))
1194 return tool->sample(tool, event, sample, evsel, machine);
1195
1196 /* For PERF_SAMPLE_READ we have either single or group mode. */
1197 if (read_format & PERF_FORMAT_GROUP)
313e53b0 1198 return deliver_sample_group(evlist, tool, event, sample,
e4caec0d
JO		 1199 machine);
1200 else
313e53b0 1201 return deliver_sample_value(evlist, tool, event, sample,
e4caec0d
JO		 1202 &sample->read.one, machine);
1203}
1204
d10eb1eb
ACM		 1205static int machines__deliver_event(struct machines *machines,
1206 struct perf_evlist *evlist,
1207 union perf_event *event,
1208 struct perf_sample *sample,
1209 struct perf_tool *tool, u64 file_offset)
cbf41645 1210{
9e69c210 1211 struct perf_evsel *evsel;
743eb868 1212 struct machine *machine;
9e69c210 1213
9fa8727a 1214 dump_event(evlist, event, file_offset, sample);
532e7269 1215
313e53b0 1216 evsel = perf_evlist__id2evsel(evlist, sample->id);
7b27509f 1217
fa713a4e 1218 machine = machines__find_for_cpumode(machines, event, sample);
743eb868 1219
cbf41645
TG		 1220 switch (event->header.type) {
1221 case PERF_RECORD_SAMPLE:
9e69c210 1222 if (evsel == NULL) {
313e53b0 1223 ++evlist->stats.nr_unknown_id;
6782206b 1224 return 0;
9e69c210 1225 }
1b29ac59 1226 dump_sample(evsel, event, sample);
0c095715 1227 if (machine == NULL) {
313e53b0 1228 ++evlist->stats.nr_unprocessable_samples;
6782206b 1229 return 0;
0c095715 1230 }
313e53b0 1231 return perf_evlist__deliver_sample(evlist, tool, event, sample, evsel, machine);
cbf41645 1232 case PERF_RECORD_MMAP:
45694aa7 1233 return tool->mmap(tool, event, sample, machine);
5c5e854b 1234 case PERF_RECORD_MMAP2:
930e6fcd
KL		 1235 if (event->header.misc & PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT)
1236 ++evlist->stats.nr_proc_map_timeout;
5c5e854b 1237 return tool->mmap2(tool, event, sample, machine);
cbf41645 1238 case PERF_RECORD_COMM:
45694aa7 1239 return tool->comm(tool, event, sample, machine);
cbf41645 1240 case PERF_RECORD_FORK:
45694aa7 1241 return tool->fork(tool, event, sample, machine);
cbf41645 1242 case PERF_RECORD_EXIT:
45694aa7 1243 return tool->exit(tool, event, sample, machine);
cbf41645 1244 case PERF_RECORD_LOST:
45694aa7 1245 if (tool->lost == perf_event__process_lost)
313e53b0 1246 evlist->stats.total_lost += event->lost.lost;
45694aa7 1247 return tool->lost(tool, event, sample, machine);
c4937a91
KL		 1248 case PERF_RECORD_LOST_SAMPLES:
1249 if (tool->lost_samples == perf_event__process_lost_samples)
1250 evlist->stats.total_lost_samples += event->lost_samples.lost;
1251 return tool->lost_samples(tool, event, sample, machine);
cbf41645 1252 case PERF_RECORD_READ:
45694aa7 1253 return tool->read(tool, event, sample, evsel, machine);
cbf41645 1254 case PERF_RECORD_THROTTLE:
45694aa7 1255 return tool->throttle(tool, event, sample, machine);
cbf41645 1256 case PERF_RECORD_UNTHROTTLE:
45694aa7 1257 return tool->unthrottle(tool, event, sample, machine);
4a96f7a0 1258 case PERF_RECORD_AUX:
a38f48e3
AH		 1259 if (tool->aux == perf_event__process_aux &&
1260 (event->aux.flags & PERF_AUX_FLAG_TRUNCATED))
1261 evlist->stats.total_aux_lost += 1;
4a96f7a0 1262 return tool->aux(tool, event, sample, machine);
0ad21f68
AH		 1263 case PERF_RECORD_ITRACE_START:
1264 return tool->itrace_start(tool, event, sample, machine);
0286039f
AH		 1265 case PERF_RECORD_SWITCH:
1266 case PERF_RECORD_SWITCH_CPU_WIDE:
1267 return tool->context_switch(tool, event, sample, machine);
cbf41645 1268 default:
313e53b0 1269 ++evlist->stats.nr_unknown_events;
cbf41645
TG		 1270 return -1;
1271 }
1272}
1273
c446870d
AH		 1274static int perf_session__deliver_event(struct perf_session *session,
1275 union perf_event *event,
1276 struct perf_sample *sample,
1277 struct perf_tool *tool,
1278 u64 file_offset)
1279{
1280 int ret;
1281
1282 ret = auxtrace__process_event(session, event, sample, tool);
1283 if (ret < 0)
1284 return ret;
1285 if (ret > 0)
1286 return 0;
1287
1288 return machines__deliver_event(&session->machines, session->evlist,
1289 event, sample, tool, file_offset);
1290}
1291
d5652d86
AH		 1292static s64 perf_session__process_user_event(struct perf_session *session,
1293 union perf_event *event,
d5652d86 1294 u64 file_offset)
06aae590 1295{
d704ebda 1296 struct ordered_events *oe = &session->ordered_events;
9870d780 1297 struct perf_tool *tool = session->tool;
cc9784bd 1298 int fd = perf_data_file__fd(session->file);
10d0f086
ACM		 1299 int err;
1300
9fa8727a 1301 dump_event(session->evlist, event, file_offset, NULL);
06aae590 1302
cbf41645 1303 /* These events are processed right away */
06aae590 1304 switch (event->header.type) {
2c46dbb5 1305 case PERF_RECORD_HEADER_ATTR:
47c3d109 1306 err = tool->attr(tool, event, &session->evlist);
cfe1c414 1307 if (err == 0) {
7b56cce2 1308 perf_session__set_id_hdr_size(session);
cfe1c414
AH		 1309 perf_session__set_comm_exec(session);
1310 }
10d0f086 1311 return err;
ffe77725
JO		 1312 case PERF_RECORD_EVENT_UPDATE:
1313 return tool->event_update(tool, event, &session->evlist);
f67697bd
JO		 1314 case PERF_RECORD_HEADER_EVENT_TYPE:
1315 /*
1316 * Depreceated, but we need to handle it for sake
1317 * of old data files create in pipe mode.
1318 */
1319 return 0;
9215545e
TZ		 1320 case PERF_RECORD_HEADER_TRACING_DATA:
1321 /* setup for reading amidst mmap */
cc9784bd 1322 lseek(fd, file_offset, SEEK_SET);
47c3d109 1323 return tool->tracing_data(tool, event, session);
c7929e47 1324 case PERF_RECORD_HEADER_BUILD_ID:
45694aa7 1325 return tool->build_id(tool, event, session);
d6b17beb 1326 case PERF_RECORD_FINISHED_ROUND:
d704ebda 1327 return tool->finished_round(tool, event, oe);
3c659eed
AH		 1328 case PERF_RECORD_ID_INDEX:
1329 return tool->id_index(tool, event, session);
a16ac023
AH		 1330 case PERF_RECORD_AUXTRACE_INFO:
1331 return tool->auxtrace_info(tool, event, session);
1332 case PERF_RECORD_AUXTRACE:
1333 /* setup for reading amidst mmap */
1334 lseek(fd, file_offset + event->header.size, SEEK_SET);
1335 return tool->auxtrace(tool, event, session);
e9bf54d2 1336 case PERF_RECORD_AUXTRACE_ERROR:
85ed4729 1337 perf_session__auxtrace_error_inc(session, event);
e9bf54d2 1338 return tool->auxtrace_error(tool, event, session);
5f3339d2
JO		 1339 case PERF_RECORD_THREAD_MAP:
1340 return tool->thread_map(tool, event, session);
6640b6c2
JO		 1341 case PERF_RECORD_CPU_MAP:
1342 return tool->cpu_map(tool, event, session);
374fb9e3
JO		 1343 case PERF_RECORD_STAT_CONFIG:
1344 return tool->stat_config(tool, event, session);
d80518c9
JO		 1345 case PERF_RECORD_STAT:
1346 return tool->stat(tool, event, session);
2d8f0f18
JO		 1347 case PERF_RECORD_STAT_ROUND:
1348 return tool->stat_round(tool, event, session);
06aae590 1349 default:
ba74f064 1350 return -EINVAL;
06aae590 1351 }
ba74f064
TG		 1352}
1353
a293829d
AH		 1354int perf_session__deliver_synth_event(struct perf_session *session,
1355 union perf_event *event,
b7b61cbe 1356 struct perf_sample *sample)
a293829d 1357{
fa713a4e 1358 struct perf_evlist *evlist = session->evlist;
9870d780 1359 struct perf_tool *tool = session->tool;
fa713a4e
ACM		 1360
1361 events_stats__inc(&evlist->stats, event->header.type);
a293829d
AH		 1362
1363 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
b7b61cbe 1364 return perf_session__process_user_event(session, event, 0);
a293829d 1365
fa713a4e 1366 return machines__deliver_event(&session->machines, evlist, event, sample, tool, 0);
a293829d
AH		 1367}
1368
268fb20f
JO		 1369static void event_swap(union perf_event *event, bool sample_id_all)
1370{
1371 perf_event__swap_op swap;
1372
1373 swap = perf_event__swap_ops[event->header.type];
1374 if (swap)
1375 swap(event, sample_id_all);
1376}
1377
5a52f33a
AH		 1378int perf_session__peek_event(struct perf_session *session, off_t file_offset,
1379 void *buf, size_t buf_sz,
1380 union perf_event **event_ptr,
1381 struct perf_sample *sample)
1382{
1383 union perf_event *event;
1384 size_t hdr_sz, rest;
1385 int fd;
1386
1387 if (session->one_mmap && !session->header.needs_swap) {
1388 event = file_offset - session->one_mmap_offset +
1389 session->one_mmap_addr;
1390 goto out_parse_sample;
1391 }
1392
1393 if (perf_data_file__is_pipe(session->file))
1394 return -1;
1395
1396 fd = perf_data_file__fd(session->file);
1397 hdr_sz = sizeof(struct perf_event_header);
1398
1399 if (buf_sz < hdr_sz)
1400 return -1;
1401
1402 if (lseek(fd, file_offset, SEEK_SET) == (off_t)-1 ||
554e92ed 1403 readn(fd, buf, hdr_sz) != (ssize_t)hdr_sz)
5a52f33a
AH		 1404 return -1;
1405
1406 event = (union perf_event *)buf;
1407
1408 if (session->header.needs_swap)
1409 perf_event_header__bswap(&event->header);
1410
554e92ed 1411 if (event->header.size < hdr_sz || event->header.size > buf_sz)
5a52f33a
AH		 1412 return -1;
1413
1414 rest = event->header.size - hdr_sz;
1415
554e92ed 1416 if (readn(fd, buf, rest) != (ssize_t)rest)
5a52f33a
AH		 1417 return -1;
1418
1419 if (session->header.needs_swap)
1420 event_swap(event, perf_evlist__sample_id_all(session->evlist));
1421
1422out_parse_sample:
1423
1424 if (sample && event->header.type < PERF_RECORD_USER_TYPE_START &&
1425 perf_evlist__parse_sample(session->evlist, event, sample))
1426 return -1;
1427
1428 *event_ptr = event;
1429
1430 return 0;
1431}
1432
d5652d86 1433static s64 perf_session__process_event(struct perf_session *session,
b7b61cbe 1434 union perf_event *event, u64 file_offset)
ba74f064 1435{
313e53b0 1436 struct perf_evlist *evlist = session->evlist;
9870d780 1437 struct perf_tool *tool = session->tool;
8d50e5b4 1438 struct perf_sample sample;
ba74f064
TG		 1439 int ret;
1440
268fb20f 1441 if (session->header.needs_swap)
313e53b0 1442 event_swap(event, perf_evlist__sample_id_all(evlist));
ba74f064
TG		 1443
1444 if (event->header.type >= PERF_RECORD_HEADER_MAX)
1445 return -EINVAL;
1446
313e53b0 1447 events_stats__inc(&evlist->stats, event->header.type);
ba74f064
TG		 1448
1449 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
b7b61cbe 1450 return perf_session__process_user_event(session, event, file_offset);
cbf41645 1451
3dfc2c0a
TG		 1452 /*
1453 * For all kernel events we get the sample data
1454 */
313e53b0 1455 ret = perf_evlist__parse_sample(evlist, event, &sample);
5538beca
FW		 1456 if (ret)
1457 return ret;
3dfc2c0a 1458
0a8cb85c 1459 if (tool->ordered_events) {
b7b61cbe 1460 ret = perf_session__queue_event(session, event, &sample, file_offset);
cbf41645
TG		 1461 if (ret != -ETIME)
1462 return ret;
1463 }
1464
c446870d
AH		 1465 return perf_session__deliver_event(session, event, &sample, tool,
1466 file_offset);
06aae590
ACM		 1467}
1468
316c7136 1469void perf_event_header__bswap(struct perf_event_header *hdr)
ba21594c 1470{
316c7136
ACM		 1471 hdr->type = bswap_32(hdr->type);
1472 hdr->misc = bswap_16(hdr->misc);
1473 hdr->size = bswap_16(hdr->size);
ba21594c
ACM		 1474}
1475
b424eba2
ACM		 1476struct thread *perf_session__findnew(struct perf_session *session, pid_t pid)
1477{
1fcb8768 1478 return machine__findnew_thread(&session->machines.host, -1, pid);
b424eba2
ACM		 1479}
1480
9d8b172f 1481int perf_session__register_idle_thread(struct perf_session *session)
06aae590 1482{
1fcb8768 1483 struct thread *thread;
9d8b172f 1484 int err = 0;
06aae590 1485
1fcb8768 1486 thread = machine__findnew_thread(&session->machines.host, 0, 0);
162f0bef 1487 if (thread == NULL || thread__set_comm(thread, "swapper", 0)) {
06aae590 1488 pr_err("problem inserting idle task.\n");
9d8b172f 1489 err = -1;
06aae590
ACM		 1490 }
1491
9d8b172f
MH		 1492 /* machine__findnew_thread() got the thread, so put it */
1493 thread__put(thread);
1494 return err;
06aae590
ACM		 1495}
1496
9870d780 1497static void perf_session__warn_about_errors(const struct perf_session *session)
11095994 1498{
9870d780
ACM		 1499 const struct events_stats *stats = &session->evlist->stats;
1500 const struct ordered_events *oe = &session->ordered_events;
1501
1502 if (session->tool->lost == perf_event__process_lost &&
ccda068f 1503 stats->nr_events[PERF_RECORD_LOST] != 0) {
7b27509f
ACM		 1504 ui__warning("Processed %d events and lost %d chunks!\n\n"
1505 "Check IO/CPU overload!\n\n",
ccda068f
ACM		 1506 stats->nr_events[0],
1507 stats->nr_events[PERF_RECORD_LOST]);
11095994
ACM		 1508 }
1509
c4937a91
KL		 1510 if (session->tool->lost_samples == perf_event__process_lost_samples) {
1511 double drop_rate;
1512
1513 drop_rate = (double)stats->total_lost_samples /
1514 (double) (stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples);
1515 if (drop_rate > 0.05) {
6ba29c2f 1516 ui__warning("Processed %" PRIu64 " samples and lost %3.2f%% samples!\n\n",
c4937a91
KL		 1517 stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples,
1518 drop_rate * 100.0);
1519 }
1520 }
1521
a38f48e3
AH		 1522 if (session->tool->aux == perf_event__process_aux &&
1523 stats->total_aux_lost != 0) {
1524 ui__warning("AUX data lost %" PRIu64 " times out of %u!\n\n",
1525 stats->total_aux_lost,
1526 stats->nr_events[PERF_RECORD_AUX]);
1527 }
1528
ccda068f 1529 if (stats->nr_unknown_events != 0) {
11095994
ACM		 1530 ui__warning("Found %u unknown events!\n\n"
1531 "Is this an older tool processing a perf.data "
1532 "file generated by a more recent tool?\n\n"
1533 "If that is not the case, consider "
1534 "reporting to linux-kernel@vger.kernel.org.\n\n",
ccda068f 1535 stats->nr_unknown_events);
11095994
ACM		 1536 }
1537
ccda068f 1538 if (stats->nr_unknown_id != 0) {
9e69c210 1539 ui__warning("%u samples with id not present in the header\n",
ccda068f 1540 stats->nr_unknown_id);
9e69c210
ACM		 1541 }
1542
ccda068f 1543 if (stats->nr_invalid_chains != 0) {
75be989a
ACM		 1544 ui__warning("Found invalid callchains!\n\n"
1545 "%u out of %u events were discarded for this reason.\n\n"
1546 "Consider reporting to linux-kernel@vger.kernel.org.\n\n",
ccda068f
ACM		 1547 stats->nr_invalid_chains,
1548 stats->nr_events[PERF_RECORD_SAMPLE]);
75be989a 1549 }
0c095715 1550
ccda068f 1551 if (stats->nr_unprocessable_samples != 0) {
0c095715
JR		 1552 ui__warning("%u unprocessable samples recorded.\n"
1553 "Do you have a KVM guest running and not using 'perf kvm'?\n",
ccda068f 1554 stats->nr_unprocessable_samples);
0c095715 1555 }
f61ff6c0 1556
9870d780
ACM		 1557 if (oe->nr_unordered_events != 0)
1558 ui__warning("%u out of order events recorded.\n", oe->nr_unordered_events);
85ed4729
AH		 1559
1560 events_stats__auxtrace_error_warn(stats);
930e6fcd
KL		 1561
1562 if (stats->nr_proc_map_timeout != 0) {
1563 ui__warning("%d map information files for pre-existing threads were\n"
1564 "not processed, if there are samples for addresses they\n"
1565 "will not be resolved, you may find out which are these\n"
1566 "threads by running with -v and redirecting the output\n"
9d9cad76
KL		 1567 "to a file.\n"
1568 "The time limit to process proc map is too short?\n"
1569 "Increase it by --proc-map-timeout\n",
930e6fcd
KL		 1570 stats->nr_proc_map_timeout);
1571 }
11095994
ACM		 1572}
1573
a5499b37
AH		 1574static int perf_session__flush_thread_stack(struct thread *thread,
1575 void *p __maybe_unused)
1576{
1577 return thread_stack__flush(thread);
1578}
1579
1580static int perf_session__flush_thread_stacks(struct perf_session *session)
1581{
1582 return machines__for_each_thread(&session->machines,
1583 perf_session__flush_thread_stack,
1584 NULL);
1585}
1586
8dc58101
TZ		 1587volatile int session_done;
1588
b7b61cbe 1589static int __perf_session__process_pipe_events(struct perf_session *session)
8dc58101 1590{
fa713a4e 1591 struct ordered_events *oe = &session->ordered_events;
9870d780 1592 struct perf_tool *tool = session->tool;
316c7136 1593 int fd = perf_data_file__fd(session->file);
444d2866
SE		 1594 union perf_event *event;
1595 uint32_t size, cur_size = 0;
1596 void *buf = NULL;
d5652d86 1597 s64 skip = 0;
8dc58101 1598 u64 head;
727ebd54 1599 ssize_t err;
8dc58101
TZ		 1600 void *p;
1601
45694aa7 1602 perf_tool__fill_defaults(tool);
8dc58101
TZ		 1603
1604 head = 0;
444d2866
SE		 1605 cur_size = sizeof(union perf_event);
1606
1607 buf = malloc(cur_size);
1608 if (!buf)
1609 return -errno;
8dc58101 1610more:
444d2866 1611 event = buf;
cc9784bd 1612 err = readn(fd, event, sizeof(struct perf_event_header));
8dc58101
TZ		 1613 if (err <= 0) {
1614 if (err == 0)
1615 goto done;
1616
1617 pr_err("failed to read event header\n");
1618 goto out_err;
1619 }
1620
316c7136 1621 if (session->header.needs_swap)
444d2866 1622 perf_event_header__bswap(&event->header);
8dc58101 1623
444d2866 1624 size = event->header.size;
27389d78
AH		 1625 if (size < sizeof(struct perf_event_header)) {
1626 pr_err("bad event header size\n");
1627 goto out_err;
1628 }
8dc58101 1629
444d2866
SE		 1630 if (size > cur_size) {
1631 void *new = realloc(buf, size);
1632 if (!new) {
1633 pr_err("failed to allocate memory to read event\n");
1634 goto out_err;
1635 }
1636 buf = new;
1637 cur_size = size;
1638 event = buf;
1639 }
1640 p = event;
8dc58101
TZ		 1641 p += sizeof(struct perf_event_header);
1642
794e43b5 1643 if (size - sizeof(struct perf_event_header)) {
cc9784bd 1644 err = readn(fd, p, size - sizeof(struct perf_event_header));
794e43b5
TZ		 1645 if (err <= 0) {
1646 if (err == 0) {
1647 pr_err("unexpected end of event stream\n");
1648 goto done;
1649 }
8dc58101 1650
794e43b5
TZ		 1651 pr_err("failed to read event data\n");
1652 goto out_err;
1653 }
8dc58101
TZ		 1654 }
1655
b7b61cbe 1656 if ((skip = perf_session__process_event(session, event, head)) < 0) {
9389a460 1657 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
444d2866 1658 head, event->header.size, event->header.type);
9389a460
JO		 1659 err = -EINVAL;
1660 goto out_err;
8dc58101
TZ		 1661 }
1662
1663 head += size;
1664
8dc58101
TZ		 1665 if (skip > 0)
1666 head += skip;
1667
1668 if (!session_done())
1669 goto more;
1670done:
8c16b649 1671 /* do the final flush for ordered samples */
b7b61cbe 1672 err = ordered_events__flush(oe, OE_FLUSH__FINAL);
c446870d
AH		 1673 if (err)
1674 goto out_err;
1675 err = auxtrace__flush_events(session, tool);
a5499b37
AH		 1676 if (err)
1677 goto out_err;
1678 err = perf_session__flush_thread_stacks(session);
8dc58101 1679out_err:
444d2866 1680 free(buf);
9870d780 1681 perf_session__warn_about_errors(session);
adc56ed1 1682 ordered_events__free(&session->ordered_events);
c446870d 1683 auxtrace__free_events(session);
8dc58101
TZ		 1684 return err;
1685}
1686
998bedc8
FW		 1687static union perf_event *
1688fetch_mmaped_event(struct perf_session *session,
1689 u64 head, size_t mmap_size, char *buf)
1690{
1691 union perf_event *event;
1692
1693 /*
1694 * Ensure we have enough space remaining to read
1695 * the size of the event in the headers.
1696 */
1697 if (head + sizeof(event->header) > mmap_size)
1698 return NULL;
1699
1700 event = (union perf_event *)(buf + head);
1701
1702 if (session->header.needs_swap)
1703 perf_event_header__bswap(&event->header);
1704
27389d78
AH		 1705 if (head + event->header.size > mmap_size) {
1706 /* We're not fetching the event so swap back again */
1707 if (session->header.needs_swap)
1708 perf_event_header__bswap(&event->header);
998bedc8 1709 return NULL;
27389d78 1710 }
998bedc8
FW		 1711
1712 return event;
1713}
1714
35d48ddf
DM		 1715/*
1716 * On 64bit we can mmap the data file in one go. No need for tiny mmap
1717 * slices. On 32bit we use 32MB.
1718 */
1719#if BITS_PER_LONG == 64
1720#define MMAP_SIZE ULLONG_MAX
1721#define NUM_MMAPS 1
1722#else
1723#define MMAP_SIZE (32 * 1024 * 1024ULL)
1724#define NUM_MMAPS 128
1725#endif
1726
4ac30cf7
NK		 1727static int __perf_session__process_events(struct perf_session *session,
1728 u64 data_offset, u64 data_size,
b7b61cbe 1729 u64 file_size)
06aae590 1730{
fa713a4e 1731 struct ordered_events *oe = &session->ordered_events;
9870d780 1732 struct perf_tool *tool = session->tool;
cc9784bd 1733 int fd = perf_data_file__fd(session->file);
d5652d86 1734 u64 head, page_offset, file_offset, file_pos, size;
fe174207 1735 int err, mmap_prot, mmap_flags, map_idx = 0;
0c1fe6b2 1736 size_t mmap_size;
35d48ddf 1737 char *buf, *mmaps[NUM_MMAPS];
8115d60c 1738 union perf_event *event;
4d3001fd 1739 struct ui_progress prog;
d5652d86 1740 s64 skip;
0331ee0c 1741
45694aa7 1742 perf_tool__fill_defaults(tool);
06aae590 1743
0331ee0c
TG		 1744 page_offset = page_size * (data_offset / page_size);
1745 file_offset = page_offset;
1746 head = data_offset - page_offset;
06aae590 1747
381c02f6
MR		 1748 if (data_size == 0)
1749 goto out;
1750
1751 if (data_offset + data_size < file_size)
d6513281
TG		 1752 file_size = data_offset + data_size;
1753
4d3001fd 1754 ui_progress__init(&prog, file_size, "Processing events...");
55b44629 1755
35d48ddf 1756 mmap_size = MMAP_SIZE;
919d86d3 1757 if (mmap_size > file_size) {
55b44629 1758 mmap_size = file_size;
919d86d3
AH		 1759 session->one_mmap = true;
1760 }
55b44629 1761
fe174207
TG		 1762 memset(mmaps, 0, sizeof(mmaps));
1763
ba21594c
ACM		 1764 mmap_prot = PROT_READ;
1765 mmap_flags = MAP_SHARED;
1766
0331ee0c 1767 if (session->header.needs_swap) {
ba21594c
ACM		 1768 mmap_prot |= PROT_WRITE;
1769 mmap_flags = MAP_PRIVATE;
1770 }
06aae590 1771remap:
cc9784bd 1772 buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, fd,
55b44629 1773 file_offset);
06aae590
ACM		 1774 if (buf == MAP_FAILED) {
1775 pr_err("failed to mmap file\n");
1776 err = -errno;
1777 goto out_err;
1778 }
fe174207
TG		 1779 mmaps[map_idx] = buf;
1780 map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1);
d6513281 1781 file_pos = file_offset + head;
919d86d3
AH		 1782 if (session->one_mmap) {
1783 session->one_mmap_addr = buf;
1784 session->one_mmap_offset = file_offset;
1785 }
06aae590
ACM		 1786
1787more:
998bedc8
FW		 1788 event = fetch_mmaped_event(session, head, mmap_size, buf);
1789 if (!event) {
fe174207
TG		 1790 if (mmaps[map_idx]) {
1791 munmap(mmaps[map_idx], mmap_size);
1792 mmaps[map_idx] = NULL;
1793 }
06aae590 1794
0331ee0c
TG		 1795 page_offset = page_size * (head / page_size);
1796 file_offset += page_offset;
1797 head -= page_offset;
06aae590
ACM		 1798 goto remap;
1799 }
1800
1801 size = event->header.size;
1802
27389d78 1803 if (size < sizeof(struct perf_event_header) ||
b7b61cbe 1804 (skip = perf_session__process_event(session, event, file_pos)) < 0) {
9389a460
JO		 1805 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
1806 file_offset + head, event->header.size,
1807 event->header.type);
1808 err = -EINVAL;
1809 goto out_err;
06aae590
ACM		 1810 }
1811
6f917c70
AH		 1812 if (skip)
1813 size += skip;
1814
06aae590 1815 head += size;
d6513281 1816 file_pos += size;
06aae590 1817
4d3001fd 1818 ui_progress__update(&prog, size);
55b44629 1819
33e940a2 1820 if (session_done())
8c16b649 1821 goto out;
33e940a2 1822
d6513281 1823 if (file_pos < file_size)
06aae590 1824 goto more;
d6513281 1825
8c16b649 1826out:
c61e52ee 1827 /* do the final flush for ordered samples */
b7b61cbe 1828 err = ordered_events__flush(oe, OE_FLUSH__FINAL);
c446870d
AH		 1829 if (err)
1830 goto out_err;
1831 err = auxtrace__flush_events(session, tool);
a5499b37
AH		 1832 if (err)
1833 goto out_err;
1834 err = perf_session__flush_thread_stacks(session);
06aae590 1835out_err:
a5580f3e 1836 ui_progress__finish();
9870d780 1837 perf_session__warn_about_errors(session);
adc56ed1 1838 ordered_events__free(&session->ordered_events);
c446870d 1839 auxtrace__free_events(session);
919d86d3 1840 session->one_mmap = false;
06aae590
ACM		 1841 return err;
1842}
27295592 1843
b7b61cbe 1844int perf_session__process_events(struct perf_session *session)
6122e4e4 1845{
316c7136 1846 u64 size = perf_data_file__size(session->file);
6122e4e4
ACM		 1847 int err;
1848
9d8b172f 1849 if (perf_session__register_idle_thread(session) < 0)
6122e4e4
ACM		 1850 return -ENOMEM;
1851
316c7136
ACM		 1852 if (!perf_data_file__is_pipe(session->file))
1853 err = __perf_session__process_events(session,
1854 session->header.data_offset,
b7b61cbe 1855 session->header.data_size, size);
8dc58101 1856 else
b7b61cbe 1857 err = __perf_session__process_pipe_events(session);
88ca895d 1858
6122e4e4
ACM		 1859 return err;
1860}
1861
7f3be652 1862bool perf_session__has_traces(struct perf_session *session, const char *msg)
27295592 1863{
93ea01c2
DA		 1864 struct perf_evsel *evsel;
1865
0050f7aa 1866 evlist__for_each(session->evlist, evsel) {
93ea01c2
DA		 1867 if (evsel->attr.type == PERF_TYPE_TRACEPOINT)
1868 return true;
27295592
ACM		 1869 }
1870
93ea01c2
DA		 1871 pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg);
1872 return false;
27295592 1873}
56b03f3c 1874
743eb868
ACM		 1875int maps__set_kallsyms_ref_reloc_sym(struct map **maps,
1876 const char *symbol_name, u64 addr)
56b03f3c
ACM		 1877{
1878 char *bracket;
9de89fe7 1879 enum map_type i;
a1645ce1
ZY		 1880 struct ref_reloc_sym *ref;
1881
1882 ref = zalloc(sizeof(struct ref_reloc_sym));
1883 if (ref == NULL)
1884 return -ENOMEM;
56b03f3c 1885
a1645ce1
ZY		 1886 ref->name = strdup(symbol_name);
1887 if (ref->name == NULL) {
1888 free(ref);
56b03f3c 1889 return -ENOMEM;
a1645ce1 1890 }
56b03f3c 1891
a1645ce1 1892 bracket = strchr(ref->name, ']');
56b03f3c
ACM		 1893 if (bracket)
1894 *bracket = '\0';
1895
a1645ce1 1896 ref->addr = addr;
9de89fe7
ACM		 1897
1898 for (i = 0; i < MAP__NR_TYPES; ++i) {
a1645ce1 1899 struct kmap *kmap = map__kmap(maps[i]);
ba92732e
WN		 1900
1901 if (!kmap)
1902 continue;
a1645ce1 1903 kmap->ref_reloc_sym = ref;
9de89fe7
ACM		 1904 }
1905
56b03f3c
ACM		 1906 return 0;
1907}
1f626bc3 1908
316c7136 1909size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp)
1f626bc3 1910{
316c7136 1911 return machines__fprintf_dsos(&session->machines, fp);
1f626bc3 1912}
f869097e 1913
316c7136 1914size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp,
417c2ff6 1915 bool (skip)(struct dso *dso, int parm), int parm)
f869097e 1916{
316c7136 1917 return machines__fprintf_dsos_buildid(&session->machines, fp, skip, parm);
f869097e 1918}
e248de33
ACM		 1919
1920size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp)
1921{
c446870d
AH		 1922 size_t ret;
1923 const char *msg = "";
1924
1925 if (perf_header__has_feat(&session->header, HEADER_AUXTRACE))
1926 msg = " (excludes AUX area (e.g. instruction trace) decoded / synthesized events)";
1927
fe692ac8 1928 ret = fprintf(fp, "\nAggregated stats:%s\n", msg);
e248de33 1929
75be989a 1930 ret += events_stats__fprintf(&session->evlist->stats, fp);
e248de33
ACM		 1931 return ret;
1932}
c0230b2b 1933
b424eba2
ACM		 1934size_t perf_session__fprintf(struct perf_session *session, FILE *fp)
1935{
1936 /*
1937 * FIXME: Here we have to actually print all the machines in this
1938 * session, not just the host...
1939 */
876650e6 1940 return machine__fprintf(&session->machines.host, fp);
b424eba2
ACM		 1941}
1942
9cbdb702
DA		 1943struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session,
1944 unsigned int type)
1945{
1946 struct perf_evsel *pos;
1947
0050f7aa 1948 evlist__for_each(session->evlist, pos) {
9cbdb702
DA		 1949 if (pos->attr.type == type)
1950 return pos;
1951 }
1952 return NULL;
1953}
1954
a2cb3cf2 1955void perf_evsel__print_ip(struct perf_evsel *evsel, struct perf_sample *sample,
cc22e575 1956 struct addr_location *al,
307cbb92 1957 unsigned int print_opts, unsigned int stack_depth)
c0230b2b 1958{
c0230b2b 1959 struct callchain_cursor_node *node;
a6ffaf91
DA		 1960 int print_ip = print_opts & PRINT_IP_OPT_IP;
1961 int print_sym = print_opts & PRINT_IP_OPT_SYM;
1962 int print_dso = print_opts & PRINT_IP_OPT_DSO;
1963 int print_symoffset = print_opts & PRINT_IP_OPT_SYMOFFSET;
b0b35f01 1964 int print_oneline = print_opts & PRINT_IP_OPT_ONELINE;
cc8fae1d 1965 int print_srcline = print_opts & PRINT_IP_OPT_SRCLINE;
b0b35f01 1966 char s = print_oneline ? ' ' : '\t';
c0230b2b 1967
c0230b2b 1968 if (symbol_conf.use_callchain && sample->callchain) {
a2cb3cf2 1969 struct addr_location node_al;
c0230b2b 1970
cc8b7c2b
ACM		 1971 if (thread__resolve_callchain(al->thread, evsel,
1972 sample, NULL, NULL,
03cd1fed 1973 stack_depth) != 0) {
c0230b2b
DA		 1974 if (verbose)
1975 error("Failed to resolve callchain. Skipping\n");
1976 return;
1977 }
47260645 1978 callchain_cursor_commit(&callchain_cursor);
c0230b2b 1979
a2cb3cf2
AH		 1980 if (print_symoffset)
1981 node_al = *al;
1982
307cbb92 1983 while (stack_depth) {
a4eb24a4
AH		 1984 u64 addr = 0;
1985
47260645 1986 node = callchain_cursor_current(&callchain_cursor);
c0230b2b
DA		 1987 if (!node)
1988 break;
1989
d2ff1b14
DA		 1990 if (node->sym && node->sym->ignore)
1991 goto next;
1992
a6ffaf91 1993 if (print_ip)
b0b35f01 1994 printf("%c%16" PRIx64, s, node->ip);
a6ffaf91 1995
a4eb24a4
AH		 1996 if (node->map)
1997 addr = node->map->map_ip(node->map, node->ip);
1998
787bef17 1999 if (print_sym) {
547a92e0 2000 printf(" ");
251f426f 2001 if (print_symoffset) {
a4eb24a4 2002 node_al.addr = addr;
a2cb3cf2
AH		 2003 node_al.map = node->map;
2004 symbol__fprintf_symname_offs(node->sym, &node_al, stdout);
251f426f
DA		 2005 } else
2006 symbol__fprintf_symname(node->sym, stdout);
610723f2 2007 }
251f426f 2008
610723f2 2009 if (print_dso) {
547a92e0 2010 printf(" (");
52deff71 2011 map__fprintf_dsoname(node->map, stdout);
547a92e0 2012 printf(")");
787bef17 2013 }
b0b35f01 2014
cc8fae1d
AH		 2015 if (print_srcline)
2016 map__fprintf_srcline(node->map, addr, "\n ",
2017 stdout);
2018
b0b35f01
DA		 2019 if (!print_oneline)
2020 printf("\n");
c0230b2b 2021
307cbb92 2022 stack_depth--;
d2ff1b14
DA		 2023next:
2024 callchain_cursor_advance(&callchain_cursor);
c0230b2b
DA		 2025 }
2026
2027 } else {
a2cb3cf2 2028 if (al->sym && al->sym->ignore)
d2ff1b14
DA		 2029 return;
2030
a6ffaf91
DA		 2031 if (print_ip)
2032 printf("%16" PRIx64, sample->ip);
2033
787bef17 2034 if (print_sym) {
547a92e0 2035 printf(" ");
a978f2ab 2036 if (print_symoffset)
a2cb3cf2 2037 symbol__fprintf_symname_offs(al->sym, al,
a978f2ab
AN		 2038 stdout);
2039 else
a2cb3cf2 2040 symbol__fprintf_symname(al->sym, stdout);
610723f2
DA		 2041 }
2042
2043 if (print_dso) {
547a92e0 2044 printf(" (");
a2cb3cf2 2045 map__fprintf_dsoname(al->map, stdout);
547a92e0 2046 printf(")");
787bef17 2047 }
cc8fae1d
AH		 2048
2049 if (print_srcline)
2050 map__fprintf_srcline(al->map, al->addr, "\n ", stdout);
c0230b2b
DA		 2051 }
2052}
5d67be97
AB		 2053
2054int perf_session__cpu_bitmap(struct perf_session *session,
2055 const char *cpu_list, unsigned long *cpu_bitmap)
2056{
8bac41cb 2057 int i, err = -1;
5d67be97
AB		 2058 struct cpu_map *map;
2059
2060 for (i = 0; i < PERF_TYPE_MAX; ++i) {
2061 struct perf_evsel *evsel;
2062
2063 evsel = perf_session__find_first_evtype(session, i);
2064 if (!evsel)
2065 continue;
2066
2067 if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) {
2068 pr_err("File does not contain CPU events. "
2069 "Remove -c option to proceed.\n");
2070 return -1;
2071 }
2072 }
2073
2074 map = cpu_map__new(cpu_list);
47fbe53b
DA		 2075 if (map == NULL) {
2076 pr_err("Invalid cpu_list\n");
2077 return -1;
2078 }
5d67be97
AB		 2079
2080 for (i = 0; i < map->nr; i++) {
2081 int cpu = map->map[i];
2082
2083 if (cpu >= MAX_NR_CPUS) {
2084 pr_err("Requested CPU %d too large. "
2085 "Consider raising MAX_NR_CPUS\n", cpu);
8bac41cb 2086 goto out_delete_map;
5d67be97
AB		 2087 }
2088
2089 set_bit(cpu, cpu_bitmap);
2090 }
2091
8bac41cb
SF		 2092 err = 0;
2093
2094out_delete_map:
f30a79b0 2095 cpu_map__put(map);
8bac41cb 2096 return err;
5d67be97 2097}
fbe96f29
SE		 2098
2099void perf_session__fprintf_info(struct perf_session *session, FILE *fp,
2100 bool full)
2101{
2102 struct stat st;
c5765ece 2103 int fd, ret;
fbe96f29
SE		 2104
2105 if (session == NULL || fp == NULL)
2106 return;
2107
c5765ece
MI		 2108 fd = perf_data_file__fd(session->file);
2109
cc9784bd 2110 ret = fstat(fd, &st);
fbe96f29
SE		 2111 if (ret == -1)
2112 return;
2113
2114 fprintf(fp, "# ========\n");
2115 fprintf(fp, "# captured on: %s", ctime(&st.st_ctime));
2116 perf_header__fprintf_info(session, fp, full);
2117 fprintf(fp, "# ========\n#\n");
2118}
da378962
ACM		 2119
2120
2121int __perf_session__set_tracepoints_handlers(struct perf_session *session,
2122 const struct perf_evsel_str_handler *assocs,
2123 size_t nr_assocs)
2124{
da378962 2125 struct perf_evsel *evsel;
da378962
ACM		 2126 size_t i;
2127 int err;
2128
2129 for (i = 0; i < nr_assocs; i++) {
ccf53eac
ACM		 2130 /*
2131 * Adding a handler for an event not in the session,
2132 * just ignore it.
2133 */
2134 evsel = perf_evlist__find_tracepoint_by_name(session->evlist, assocs[i].name);
da378962 2135 if (evsel == NULL)
ccf53eac 2136 continue;
da378962
ACM		 2137
2138 err = -EEXIST;
744a9719 2139 if (evsel->handler != NULL)
ccf53eac 2140 goto out;
744a9719 2141 evsel->handler = assocs[i].handler;
da378962
ACM		 2142 }
2143
2144 err = 0;
2145out:
2146 return err;
da378962 2147}
3c659eed
AH		 2148
2149int perf_event__process_id_index(struct perf_tool *tool __maybe_unused,
2150 union perf_event *event,
2151 struct perf_session *session)
2152{
2153 struct perf_evlist *evlist = session->evlist;
2154 struct id_index_event *ie = &event->id_index;
2155 size_t i, nr, max_nr;
2156
2157 max_nr = (ie->header.size - sizeof(struct id_index_event)) /
2158 sizeof(struct id_index_entry);
2159 nr = ie->nr;
2160 if (nr > max_nr)
2161 return -EINVAL;
2162
2163 if (dump_trace)
2164 fprintf(stdout, " nr: %zu\n", nr);
2165
2166 for (i = 0; i < nr; i++) {
2167 struct id_index_entry *e = &ie->entries[i];
2168 struct perf_sample_id *sid;
2169
2170 if (dump_trace) {
2171 fprintf(stdout, " ... id: %"PRIu64, e->id);
2172 fprintf(stdout, " idx: %"PRIu64, e->idx);
2173 fprintf(stdout, " cpu: %"PRId64, e->cpu);
2174 fprintf(stdout, " tid: %"PRId64"\n", e->tid);
2175 }
2176
2177 sid = perf_evlist__id2sid(evlist, e->id);
2178 if (!sid)
2179 return -ENOENT;
2180 sid->idx = e->idx;
2181 sid->cpu = e->cpu;
2182 sid->tid = e->tid;
2183 }
2184 return 0;
2185}
2186
2187int perf_event__synthesize_id_index(struct perf_tool *tool,
2188 perf_event__handler_t process,
2189 struct perf_evlist *evlist,
2190 struct machine *machine)
2191{
2192 union perf_event *ev;
2193 struct perf_evsel *evsel;
2194 size_t nr = 0, i = 0, sz, max_nr, n;
2195 int err;
2196
2197 pr_debug2("Synthesizing id index\n");
2198
2199 max_nr = (UINT16_MAX - sizeof(struct id_index_event)) /
2200 sizeof(struct id_index_entry);
2201
cba9b847 2202 evlist__for_each(evlist, evsel)
3c659eed
AH		 2203 nr += evsel->ids;
2204
2205 n = nr > max_nr ? max_nr : nr;
2206 sz = sizeof(struct id_index_event) + n * sizeof(struct id_index_entry);
2207 ev = zalloc(sz);
2208 if (!ev)
2209 return -ENOMEM;
2210
2211 ev->id_index.header.type = PERF_RECORD_ID_INDEX;
2212 ev->id_index.header.size = sz;
2213 ev->id_index.nr = n;
2214
cba9b847 2215 evlist__for_each(evlist, evsel) {
3c659eed
AH		 2216 u32 j;
2217
2218 for (j = 0; j < evsel->ids; j++) {
2219 struct id_index_entry *e;
2220 struct perf_sample_id *sid;
2221
2222 if (i >= n) {
2223 err = process(tool, ev, NULL, machine);
2224 if (err)
2225 goto out_err;
2226 nr -= n;
2227 i = 0;
2228 }
2229
2230 e = &ev->id_index.entries[i++];
2231
2232 e->id = evsel->id[j];
2233
2234 sid = perf_evlist__id2sid(evlist, e->id);
2235 if (!sid) {
2236 free(ev);
2237 return -ENOENT;
2238 }
2239
2240 e->idx = sid->idx;
2241 e->cpu = sid->cpu;
2242 e->tid = sid->tid;
2243 }
2244 }
2245
2246 sz = sizeof(struct id_index_event) + nr * sizeof(struct id_index_entry);
2247 ev->id_index.header.size = sz;
2248 ev->id_index.nr = nr;
2249
2250 err = process(tool, ev, NULL, machine);
2251out_err:
2252 free(ev);
2253
2254 return err;
2255}
Linux kernel - Deliverables
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