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perf tools: Add stat 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
1d037ca1
IT		 208static int process_event_sample_stub(struct perf_tool *tool __maybe_unused,
209 union perf_event *event __maybe_unused,
210 struct perf_sample *sample __maybe_unused,
211 struct perf_evsel *evsel __maybe_unused,
212 struct machine *machine __maybe_unused)
9e69c210
ACM		 213{
214 dump_printf(": unhandled!\n");
215 return 0;
216}
217
1d037ca1
IT		 218static int process_event_stub(struct perf_tool *tool __maybe_unused,
219 union perf_event *event __maybe_unused,
220 struct perf_sample *sample __maybe_unused,
221 struct machine *machine __maybe_unused)
06aae590
ACM		 222{
223 dump_printf(": unhandled!\n");
224 return 0;
225}
226
d704ebda
ACM		 227static int process_build_id_stub(struct perf_tool *tool __maybe_unused,
228 union perf_event *event __maybe_unused,
229 struct perf_session *session __maybe_unused)
230{
231 dump_printf(": unhandled!\n");
232 return 0;
233}
234
1d037ca1
IT		 235static int process_finished_round_stub(struct perf_tool *tool __maybe_unused,
236 union perf_event *event __maybe_unused,
d704ebda 237 struct ordered_events *oe __maybe_unused)
743eb868
ACM		 238{
239 dump_printf(": unhandled!\n");
240 return 0;
241}
242
45694aa7 243static int process_finished_round(struct perf_tool *tool,
d20deb64 244 union perf_event *event,
d704ebda 245 struct ordered_events *oe);
d6b17beb 246
3c659eed
AH		 247static int process_id_index_stub(struct perf_tool *tool __maybe_unused,
248 union perf_event *event __maybe_unused,
249 struct perf_session *perf_session
250 __maybe_unused)
251{
252 dump_printf(": unhandled!\n");
253 return 0;
254}
255
a16ac023
AH		 256static int process_event_auxtrace_info_stub(struct perf_tool *tool __maybe_unused,
257 union perf_event *event __maybe_unused,
258 struct perf_session *session __maybe_unused)
259{
260 dump_printf(": unhandled!\n");
261 return 0;
262}
263
264static int skipn(int fd, off_t n)
265{
266 char buf[4096];
267 ssize_t ret;
268
269 while (n > 0) {
270 ret = read(fd, buf, min(n, (off_t)sizeof(buf)));
271 if (ret <= 0)
272 return ret;
273 n -= ret;
274 }
275
276 return 0;
277}
278
279static s64 process_event_auxtrace_stub(struct perf_tool *tool __maybe_unused,
280 union perf_event *event,
281 struct perf_session *session
282 __maybe_unused)
283{
284 dump_printf(": unhandled!\n");
285 if (perf_data_file__is_pipe(session->file))
286 skipn(perf_data_file__fd(session->file), event->auxtrace.size);
287 return event->auxtrace.size;
288}
289
e9bf54d2
AH		 290static
291int process_event_auxtrace_error_stub(struct perf_tool *tool __maybe_unused,
292 union perf_event *event __maybe_unused,
293 struct perf_session *session __maybe_unused)
294{
295 dump_printf(": unhandled!\n");
296 return 0;
297}
298
5f3339d2
JO		 299
300static
301int process_event_thread_map_stub(struct perf_tool *tool __maybe_unused,
302 union perf_event *event __maybe_unused,
303 struct perf_session *session __maybe_unused)
304{
305 dump_printf(": unhandled!\n");
306 return 0;
307}
308
6640b6c2
JO		 309static
310int process_event_cpu_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
374fb9e3
JO		 318static
319int process_event_stat_config_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
d80518c9
JO		 327static int process_stat_stub(struct perf_tool *tool __maybe_unused,
328 union perf_event *event __maybe_unused,
329 struct perf_session *perf_session
330 __maybe_unused)
331{
332 dump_printf(": unhandled!\n");
333 return 0;
334}
335
9c501402 336void perf_tool__fill_defaults(struct perf_tool *tool)
06aae590 337{
45694aa7
ACM		 338 if (tool->sample == NULL)
339 tool->sample = process_event_sample_stub;
340 if (tool->mmap == NULL)
341 tool->mmap = process_event_stub;
6adb0b0a
DA		 342 if (tool->mmap2 == NULL)
343 tool->mmap2 = process_event_stub;
45694aa7
ACM		 344 if (tool->comm == NULL)
345 tool->comm = process_event_stub;
346 if (tool->fork == NULL)
347 tool->fork = process_event_stub;
348 if (tool->exit == NULL)
349 tool->exit = process_event_stub;
350 if (tool->lost == NULL)
351 tool->lost = perf_event__process_lost;
c4937a91
KL		 352 if (tool->lost_samples == NULL)
353 tool->lost_samples = perf_event__process_lost_samples;
4a96f7a0
AH		 354 if (tool->aux == NULL)
355 tool->aux = perf_event__process_aux;
0ad21f68
AH		 356 if (tool->itrace_start == NULL)
357 tool->itrace_start = perf_event__process_itrace_start;
0286039f
AH		 358 if (tool->context_switch == NULL)
359 tool->context_switch = perf_event__process_switch;
45694aa7
ACM		 360 if (tool->read == NULL)
361 tool->read = process_event_sample_stub;
362 if (tool->throttle == NULL)
363 tool->throttle = process_event_stub;
364 if (tool->unthrottle == NULL)
365 tool->unthrottle = process_event_stub;
366 if (tool->attr == NULL)
367 tool->attr = process_event_synth_attr_stub;
45694aa7
ACM		 368 if (tool->tracing_data == NULL)
369 tool->tracing_data = process_event_synth_tracing_data_stub;
370 if (tool->build_id == NULL)
d704ebda 371 tool->build_id = process_build_id_stub;
45694aa7 372 if (tool->finished_round == NULL) {
0a8cb85c 373 if (tool->ordered_events)
45694aa7 374 tool->finished_round = process_finished_round;
d6b17beb 375 else
45694aa7 376 tool->finished_round = process_finished_round_stub;
d6b17beb 377 }
3c659eed
AH		 378 if (tool->id_index == NULL)
379 tool->id_index = process_id_index_stub;
a16ac023
AH		 380 if (tool->auxtrace_info == NULL)
381 tool->auxtrace_info = process_event_auxtrace_info_stub;
382 if (tool->auxtrace == NULL)
383 tool->auxtrace = process_event_auxtrace_stub;
e9bf54d2
AH		 384 if (tool->auxtrace_error == NULL)
385 tool->auxtrace_error = process_event_auxtrace_error_stub;
5f3339d2
JO		 386 if (tool->thread_map == NULL)
387 tool->thread_map = process_event_thread_map_stub;
6640b6c2
JO		 388 if (tool->cpu_map == NULL)
389 tool->cpu_map = process_event_cpu_map_stub;
374fb9e3
JO		 390 if (tool->stat_config == NULL)
391 tool->stat_config = process_event_stat_config_stub;
d80518c9
JO		 392 if (tool->stat == NULL)
393 tool->stat = process_stat_stub;
06aae590 394}
48000a1a 395
268fb20f
JO		 396static void swap_sample_id_all(union perf_event *event, void *data)
397{
398 void *end = (void *) event + event->header.size;
399 int size = end - data;
400
401 BUG_ON(size % sizeof(u64));
402 mem_bswap_64(data, size);
403}
404
405static void perf_event__all64_swap(union perf_event *event,
1d037ca1 406 bool sample_id_all __maybe_unused)
ba21594c 407{
8115d60c
ACM		 408 struct perf_event_header *hdr = &event->header;
409 mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr));
ba21594c
ACM		 410}
411
268fb20f 412static void perf_event__comm_swap(union perf_event *event, bool sample_id_all)
ba21594c 413{
8115d60c
ACM		 414 event->comm.pid = bswap_32(event->comm.pid);
415 event->comm.tid = bswap_32(event->comm.tid);
268fb20f
JO		 416
417 if (sample_id_all) {
418 void *data = &event->comm.comm;
419
9ac3e487 420 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
268fb20f
JO		 421 swap_sample_id_all(event, data);
422 }
ba21594c
ACM		 423}
424
268fb20f
JO		 425static void perf_event__mmap_swap(union perf_event *event,
426 bool sample_id_all)
ba21594c 427{
8115d60c
ACM		 428 event->mmap.pid = bswap_32(event->mmap.pid);
429 event->mmap.tid = bswap_32(event->mmap.tid);
430 event->mmap.start = bswap_64(event->mmap.start);
431 event->mmap.len = bswap_64(event->mmap.len);
432 event->mmap.pgoff = bswap_64(event->mmap.pgoff);
268fb20f
JO		 433
434 if (sample_id_all) {
435 void *data = &event->mmap.filename;
436
9ac3e487 437 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
268fb20f
JO		 438 swap_sample_id_all(event, data);
439 }
ba21594c
ACM		 440}
441
5c5e854b
SE		 442static void perf_event__mmap2_swap(union perf_event *event,
443 bool sample_id_all)
444{
445 event->mmap2.pid = bswap_32(event->mmap2.pid);
446 event->mmap2.tid = bswap_32(event->mmap2.tid);
447 event->mmap2.start = bswap_64(event->mmap2.start);
448 event->mmap2.len = bswap_64(event->mmap2.len);
449 event->mmap2.pgoff = bswap_64(event->mmap2.pgoff);
450 event->mmap2.maj = bswap_32(event->mmap2.maj);
451 event->mmap2.min = bswap_32(event->mmap2.min);
452 event->mmap2.ino = bswap_64(event->mmap2.ino);
453
454 if (sample_id_all) {
455 void *data = &event->mmap2.filename;
456
457 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
458 swap_sample_id_all(event, data);
459 }
460}
268fb20f 461static void perf_event__task_swap(union perf_event *event, bool sample_id_all)
ba21594c 462{
8115d60c
ACM		 463 event->fork.pid = bswap_32(event->fork.pid);
464 event->fork.tid = bswap_32(event->fork.tid);
465 event->fork.ppid = bswap_32(event->fork.ppid);
466 event->fork.ptid = bswap_32(event->fork.ptid);
467 event->fork.time = bswap_64(event->fork.time);
268fb20f
JO		 468
469 if (sample_id_all)
470 swap_sample_id_all(event, &event->fork + 1);
ba21594c
ACM		 471}
472
268fb20f 473static void perf_event__read_swap(union perf_event *event, bool sample_id_all)
ba21594c 474{
8115d60c
ACM		 475 event->read.pid = bswap_32(event->read.pid);
476 event->read.tid = bswap_32(event->read.tid);
477 event->read.value = bswap_64(event->read.value);
478 event->read.time_enabled = bswap_64(event->read.time_enabled);
479 event->read.time_running = bswap_64(event->read.time_running);
480 event->read.id = bswap_64(event->read.id);
268fb20f
JO		 481
482 if (sample_id_all)
483 swap_sample_id_all(event, &event->read + 1);
ba21594c
ACM		 484}
485
4a96f7a0
AH		 486static void perf_event__aux_swap(union perf_event *event, bool sample_id_all)
487{
488 event->aux.aux_offset = bswap_64(event->aux.aux_offset);
489 event->aux.aux_size = bswap_64(event->aux.aux_size);
490 event->aux.flags = bswap_64(event->aux.flags);
491
492 if (sample_id_all)
493 swap_sample_id_all(event, &event->aux + 1);
494}
495
0ad21f68
AH		 496static void perf_event__itrace_start_swap(union perf_event *event,
497 bool sample_id_all)
498{
499 event->itrace_start.pid = bswap_32(event->itrace_start.pid);
500 event->itrace_start.tid = bswap_32(event->itrace_start.tid);
501
502 if (sample_id_all)
503 swap_sample_id_all(event, &event->itrace_start + 1);
504}
505
0286039f
AH		 506static void perf_event__switch_swap(union perf_event *event, bool sample_id_all)
507{
508 if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE) {
509 event->context_switch.next_prev_pid =
510 bswap_32(event->context_switch.next_prev_pid);
511 event->context_switch.next_prev_tid =
512 bswap_32(event->context_switch.next_prev_tid);
513 }
514
515 if (sample_id_all)
516 swap_sample_id_all(event, &event->context_switch + 1);
517}
518
dd96c46b
JO		 519static void perf_event__throttle_swap(union perf_event *event,
520 bool sample_id_all)
521{
522 event->throttle.time = bswap_64(event->throttle.time);
523 event->throttle.id = bswap_64(event->throttle.id);
524 event->throttle.stream_id = bswap_64(event->throttle.stream_id);
525
526 if (sample_id_all)
527 swap_sample_id_all(event, &event->throttle + 1);
528}
529
e108c66e
JO		 530static u8 revbyte(u8 b)
531{
532 int rev = (b >> 4) | ((b & 0xf) << 4);
533 rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2);
534 rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1);
535 return (u8) rev;
536}
537
538/*
539 * XXX this is hack in attempt to carry flags bitfield
540 * throught endian village. ABI says:
541 *
542 * Bit-fields are allocated from right to left (least to most significant)
543 * on little-endian implementations and from left to right (most to least
544 * significant) on big-endian implementations.
545 *
546 * The above seems to be byte specific, so we need to reverse each
547 * byte of the bitfield. 'Internet' also says this might be implementation
548 * specific and we probably need proper fix and carry perf_event_attr
549 * bitfield flags in separate data file FEAT_ section. Thought this seems
550 * to work for now.
551 */
552static void swap_bitfield(u8 *p, unsigned len)
553{
554 unsigned i;
555
556 for (i = 0; i < len; i++) {
557 *p = revbyte(*p);
558 p++;
559 }
560}
561
eda3913b
DA		 562/* exported for swapping attributes in file header */
563void perf_event__attr_swap(struct perf_event_attr *attr)
564{
565 attr->type = bswap_32(attr->type);
566 attr->size = bswap_32(attr->size);
b30b6172
WN		 567
568#define bswap_safe(f, n) \
569 (attr->size > (offsetof(struct perf_event_attr, f) + \
570 sizeof(attr->f) * (n)))
571#define bswap_field(f, sz) \
572do { \
573 if (bswap_safe(f, 0)) \
574 attr->f = bswap_##sz(attr->f); \
575} while(0)
576#define bswap_field_32(f) bswap_field(f, 32)
577#define bswap_field_64(f) bswap_field(f, 64)
578
579 bswap_field_64(config);
580 bswap_field_64(sample_period);
581 bswap_field_64(sample_type);
582 bswap_field_64(read_format);
583 bswap_field_32(wakeup_events);
584 bswap_field_32(bp_type);
585 bswap_field_64(bp_addr);
586 bswap_field_64(bp_len);
587 bswap_field_64(branch_sample_type);
588 bswap_field_64(sample_regs_user);
589 bswap_field_32(sample_stack_user);
590 bswap_field_32(aux_watermark);
591
592 /*
593 * After read_format are bitfields. Check read_format because
594 * we are unable to use offsetof on bitfield.
595 */
596 if (bswap_safe(read_format, 1))
597 swap_bitfield((u8 *) (&attr->read_format + 1),
598 sizeof(u64));
599#undef bswap_field_64
600#undef bswap_field_32
601#undef bswap_field
602#undef bswap_safe
eda3913b
DA		 603}
604
268fb20f 605static void perf_event__hdr_attr_swap(union perf_event *event,
1d037ca1 606 bool sample_id_all __maybe_unused)
2c46dbb5
TZ		 607{
608 size_t size;
609
eda3913b 610 perf_event__attr_swap(&event->attr.attr);
2c46dbb5 611
8115d60c
ACM		 612 size = event->header.size;
613 size -= (void *)&event->attr.id - (void *)event;
614 mem_bswap_64(event->attr.id, size);
2c46dbb5
TZ		 615}
616
268fb20f 617static void perf_event__event_type_swap(union perf_event *event,
1d037ca1 618 bool sample_id_all __maybe_unused)
cd19a035 619{
8115d60c
ACM		 620 event->event_type.event_type.event_id =
621 bswap_64(event->event_type.event_type.event_id);
cd19a035
TZ		 622}
623
268fb20f 624static void perf_event__tracing_data_swap(union perf_event *event,
1d037ca1 625 bool sample_id_all __maybe_unused)
9215545e 626{
8115d60c 627 event->tracing_data.size = bswap_32(event->tracing_data.size);
9215545e
TZ		 628}
629
a16ac023
AH		 630static void perf_event__auxtrace_info_swap(union perf_event *event,
631 bool sample_id_all __maybe_unused)
632{
633 size_t size;
634
635 event->auxtrace_info.type = bswap_32(event->auxtrace_info.type);
636
637 size = event->header.size;
638 size -= (void *)&event->auxtrace_info.priv - (void *)event;
639 mem_bswap_64(event->auxtrace_info.priv, size);
640}
641
642static void perf_event__auxtrace_swap(union perf_event *event,
643 bool sample_id_all __maybe_unused)
644{
645 event->auxtrace.size = bswap_64(event->auxtrace.size);
646 event->auxtrace.offset = bswap_64(event->auxtrace.offset);
647 event->auxtrace.reference = bswap_64(event->auxtrace.reference);
648 event->auxtrace.idx = bswap_32(event->auxtrace.idx);
649 event->auxtrace.tid = bswap_32(event->auxtrace.tid);
650 event->auxtrace.cpu = bswap_32(event->auxtrace.cpu);
651}
652
e9bf54d2
AH		 653static void perf_event__auxtrace_error_swap(union perf_event *event,
654 bool sample_id_all __maybe_unused)
655{
656 event->auxtrace_error.type = bswap_32(event->auxtrace_error.type);
657 event->auxtrace_error.code = bswap_32(event->auxtrace_error.code);
658 event->auxtrace_error.cpu = bswap_32(event->auxtrace_error.cpu);
659 event->auxtrace_error.pid = bswap_32(event->auxtrace_error.pid);
660 event->auxtrace_error.tid = bswap_32(event->auxtrace_error.tid);
661 event->auxtrace_error.ip = bswap_64(event->auxtrace_error.ip);
662}
663
5f3339d2
JO		 664static void perf_event__thread_map_swap(union perf_event *event,
665 bool sample_id_all __maybe_unused)
666{
667 unsigned i;
668
669 event->thread_map.nr = bswap_64(event->thread_map.nr);
670
671 for (i = 0; i < event->thread_map.nr; i++)
672 event->thread_map.entries[i].pid = bswap_64(event->thread_map.entries[i].pid);
673}
674
6640b6c2
JO		 675static void perf_event__cpu_map_swap(union perf_event *event,
676 bool sample_id_all __maybe_unused)
677{
678 struct cpu_map_data *data = &event->cpu_map.data;
679 struct cpu_map_entries *cpus;
680 struct cpu_map_mask *mask;
681 unsigned i;
682
683 data->type = bswap_64(data->type);
684
685 switch (data->type) {
686 case PERF_CPU_MAP__CPUS:
687 cpus = (struct cpu_map_entries *)data->data;
688
689 cpus->nr = bswap_16(cpus->nr);
690
691 for (i = 0; i < cpus->nr; i++)
692 cpus->cpu[i] = bswap_16(cpus->cpu[i]);
693 break;
694 case PERF_CPU_MAP__MASK:
695 mask = (struct cpu_map_mask *) data->data;
696
697 mask->nr = bswap_16(mask->nr);
698 mask->long_size = bswap_16(mask->long_size);
699
700 switch (mask->long_size) {
701 case 4: mem_bswap_32(&mask->mask, mask->nr); break;
702 case 8: mem_bswap_64(&mask->mask, mask->nr); break;
703 default:
704 pr_err("cpu_map swap: unsupported long size\n");
705 }
706 default:
707 break;
708 }
709}
710
374fb9e3
JO		 711static void perf_event__stat_config_swap(union perf_event *event,
712 bool sample_id_all __maybe_unused)
713{
714 u64 size;
715
716 size = event->stat_config.nr * sizeof(event->stat_config.data[0]);
717 size += 1; /* nr item itself */
718 mem_bswap_64(&event->stat_config.nr, size);
719}
720
d80518c9
JO		 721static void perf_event__stat_swap(union perf_event *event,
722 bool sample_id_all __maybe_unused)
723{
724 event->stat.id = bswap_64(event->stat.id);
725 event->stat.thread = bswap_32(event->stat.thread);
726 event->stat.cpu = bswap_32(event->stat.cpu);
727 event->stat.val = bswap_64(event->stat.val);
728 event->stat.ena = bswap_64(event->stat.ena);
729 event->stat.run = bswap_64(event->stat.run);
730}
731
268fb20f
JO		 732typedef void (*perf_event__swap_op)(union perf_event *event,
733 bool sample_id_all);
ba21594c 734
8115d60c
ACM		 735static perf_event__swap_op perf_event__swap_ops[] = {
736 [PERF_RECORD_MMAP] = perf_event__mmap_swap,
5c5e854b 737 [PERF_RECORD_MMAP2] = perf_event__mmap2_swap,
8115d60c
ACM		 738 [PERF_RECORD_COMM] = perf_event__comm_swap,
739 [PERF_RECORD_FORK] = perf_event__task_swap,
740 [PERF_RECORD_EXIT] = perf_event__task_swap,
741 [PERF_RECORD_LOST] = perf_event__all64_swap,
742 [PERF_RECORD_READ] = perf_event__read_swap,
dd96c46b
JO		 743 [PERF_RECORD_THROTTLE] = perf_event__throttle_swap,
744 [PERF_RECORD_UNTHROTTLE] = perf_event__throttle_swap,
8115d60c 745 [PERF_RECORD_SAMPLE] = perf_event__all64_swap,
4a96f7a0 746 [PERF_RECORD_AUX] = perf_event__aux_swap,
0ad21f68 747 [PERF_RECORD_ITRACE_START] = perf_event__itrace_start_swap,
c4937a91 748 [PERF_RECORD_LOST_SAMPLES] = perf_event__all64_swap,
0286039f
AH		 749 [PERF_RECORD_SWITCH] = perf_event__switch_swap,
750 [PERF_RECORD_SWITCH_CPU_WIDE] = perf_event__switch_swap,
eda3913b 751 [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap,
8115d60c
ACM		 752 [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap,
753 [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap,
754 [PERF_RECORD_HEADER_BUILD_ID] = NULL,
3c659eed 755 [PERF_RECORD_ID_INDEX] = perf_event__all64_swap,
a16ac023
AH		 756 [PERF_RECORD_AUXTRACE_INFO] = perf_event__auxtrace_info_swap,
757 [PERF_RECORD_AUXTRACE] = perf_event__auxtrace_swap,
e9bf54d2 758 [PERF_RECORD_AUXTRACE_ERROR] = perf_event__auxtrace_error_swap,
5f3339d2 759 [PERF_RECORD_THREAD_MAP] = perf_event__thread_map_swap,
6640b6c2 760 [PERF_RECORD_CPU_MAP] = perf_event__cpu_map_swap,
374fb9e3 761 [PERF_RECORD_STAT_CONFIG] = perf_event__stat_config_swap,
d80518c9 762 [PERF_RECORD_STAT] = perf_event__stat_swap,
8115d60c 763 [PERF_RECORD_HEADER_MAX] = NULL,
ba21594c
ACM		 764};
765
d6b17beb
FW		 766/*
767 * When perf record finishes a pass on every buffers, it records this pseudo
768 * event.
769 * We record the max timestamp t found in the pass n.
770 * Assuming these timestamps are monotonic across cpus, we know that if
771 * a buffer still has events with timestamps below t, they will be all
772 * available and then read in the pass n + 1.
773 * Hence when we start to read the pass n + 2, we can safely flush every
774 * events with timestamps below t.
775 *
776 * ============ PASS n =================
777 * CPU 0 | CPU 1
778 * |
779 * cnt1 timestamps | cnt2 timestamps
780 * 1 | 2
781 * 2 | 3
782 * - | 4 <--- max recorded
783 *
784 * ============ PASS n + 1 ==============
785 * CPU 0 | CPU 1
786 * |
787 * cnt1 timestamps | cnt2 timestamps
788 * 3 | 5
789 * 4 | 6
790 * 5 | 7 <---- max recorded
791 *
792 * Flush every events below timestamp 4
793 *
794 * ============ PASS n + 2 ==============
795 * CPU 0 | CPU 1
796 * |
797 * cnt1 timestamps | cnt2 timestamps
798 * 6 | 8
799 * 7 | 9
800 * - | 10
801 *
802 * Flush every events below timestamp 7
803 * etc...
804 */
b7b61cbe 805static int process_finished_round(struct perf_tool *tool __maybe_unused,
1d037ca1 806 union perf_event *event __maybe_unused,
d704ebda 807 struct ordered_events *oe)
d6b17beb 808{
5531e162
AH		 809 if (dump_trace)
810 fprintf(stdout, "\n");
b7b61cbe 811 return ordered_events__flush(oe, OE_FLUSH__ROUND);
d6b17beb
FW		 812}
813
b7b61cbe
ACM		 814int perf_session__queue_event(struct perf_session *s, union perf_event *event,
815 struct perf_sample *sample, u64 file_offset)
c61e52ee 816{
4a6b362f 817 return ordered_events__queue(&s->ordered_events, event, sample, file_offset);
640c03ce 818}
c61e52ee 819
384b6055 820static void callchain__lbr_callstack_printf(struct perf_sample *sample)
640c03ce 821{
384b6055
KL		 822 struct ip_callchain *callchain = sample->callchain;
823 struct branch_stack *lbr_stack = sample->branch_stack;
824 u64 kernel_callchain_nr = callchain->nr;
640c03ce 825 unsigned int i;
c61e52ee 826
384b6055
KL		 827 for (i = 0; i < kernel_callchain_nr; i++) {
828 if (callchain->ips[i] == PERF_CONTEXT_USER)
829 break;
830 }
831
832 if ((i != kernel_callchain_nr) && lbr_stack->nr) {
833 u64 total_nr;
834 /*
835 * LBR callstack can only get user call chain,
836 * i is kernel call chain number,
837 * 1 is PERF_CONTEXT_USER.
838 *
839 * The user call chain is stored in LBR registers.
840 * LBR are pair registers. The caller is stored
841 * in "from" register, while the callee is stored
842 * in "to" register.
843 * For example, there is a call stack
844 * "A"->"B"->"C"->"D".
845 * The LBR registers will recorde like
846 * "C"->"D", "B"->"C", "A"->"B".
847 * So only the first "to" register and all "from"
848 * registers are needed to construct the whole stack.
849 */
850 total_nr = i + 1 + lbr_stack->nr + 1;
851 kernel_callchain_nr = i + 1;
852
853 printf("... LBR call chain: nr:%" PRIu64 "\n", total_nr);
854
855 for (i = 0; i < kernel_callchain_nr; i++)
856 printf("..... %2d: %016" PRIx64 "\n",
857 i, callchain->ips[i]);
858
859 printf("..... %2d: %016" PRIx64 "\n",
860 (int)(kernel_callchain_nr), lbr_stack->entries[0].to);
861 for (i = 0; i < lbr_stack->nr; i++)
862 printf("..... %2d: %016" PRIx64 "\n",
863 (int)(i + kernel_callchain_nr + 1), lbr_stack->entries[i].from);
864 }
865}
866
867static void callchain__printf(struct perf_evsel *evsel,
868 struct perf_sample *sample)
869{
870 unsigned int i;
871 struct ip_callchain *callchain = sample->callchain;
872
873 if (has_branch_callstack(evsel))
874 callchain__lbr_callstack_printf(sample);
875
876 printf("... FP chain: nr:%" PRIu64 "\n", callchain->nr);
640c03ce 877
384b6055 878 for (i = 0; i < callchain->nr; i++)
9486aa38 879 printf("..... %2d: %016" PRIx64 "\n",
384b6055 880 i, callchain->ips[i]);
c61e52ee
FW		 881}
882
b5387528
RAV		 883static void branch_stack__printf(struct perf_sample *sample)
884{
885 uint64_t i;
886
887 printf("... branch stack: nr:%" PRIu64 "\n", sample->branch_stack->nr);
888
0e332f03
AK		 889 for (i = 0; i < sample->branch_stack->nr; i++) {
890 struct branch_entry *e = &sample->branch_stack->entries[i];
891
892 printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 " %hu cycles %s%s%s%s %x\n",
893 i, e->from, e->to,
894 e->flags.cycles,
895 e->flags.mispred ? "M" : " ",
896 e->flags.predicted ? "P" : " ",
897 e->flags.abort ? "A" : " ",
898 e->flags.in_tx ? "T" : " ",
899 (unsigned)e->flags.reserved);
900 }
b5387528
RAV		 901}
902
0f6a3015
JO		 903static void regs_dump__printf(u64 mask, u64 *regs)
904{
905 unsigned rid, i = 0;
906
907 for_each_set_bit(rid, (unsigned long *) &mask, sizeof(mask) * 8) {
908 u64 val = regs[i++];
909
910 printf(".... %-5s 0x%" PRIx64 "\n",
911 perf_reg_name(rid), val);
912 }
913}
914
6a21c0b5
SE		 915static const char *regs_abi[] = {
916 [PERF_SAMPLE_REGS_ABI_NONE] = "none",
917 [PERF_SAMPLE_REGS_ABI_32] = "32-bit",
918 [PERF_SAMPLE_REGS_ABI_64] = "64-bit",
919};
920
921static inline const char *regs_dump_abi(struct regs_dump *d)
922{
923 if (d->abi > PERF_SAMPLE_REGS_ABI_64)
924 return "unknown";
925
926 return regs_abi[d->abi];
927}
928
929static void regs__printf(const char *type, struct regs_dump *regs)
930{
931 u64 mask = regs->mask;
932
933 printf("... %s regs: mask 0x%" PRIx64 " ABI %s\n",
934 type,
935 mask,
936 regs_dump_abi(regs));
937
938 regs_dump__printf(mask, regs->regs);
939}
940
352ea45a 941static void regs_user__printf(struct perf_sample *sample)
0f6a3015
JO		 942{
943 struct regs_dump *user_regs = &sample->user_regs;
944
6a21c0b5
SE		 945 if (user_regs->regs)
946 regs__printf("user", user_regs);
947}
948
949static void regs_intr__printf(struct perf_sample *sample)
950{
951 struct regs_dump *intr_regs = &sample->intr_regs;
952
953 if (intr_regs->regs)
954 regs__printf("intr", intr_regs);
0f6a3015
JO		 955}
956
957static void stack_user__printf(struct stack_dump *dump)
958{
959 printf("... ustack: size %" PRIu64 ", offset 0x%x\n",
960 dump->size, dump->offset);
961}
962
9fa8727a 963static void perf_evlist__print_tstamp(struct perf_evlist *evlist,
8115d60c 964 union perf_event *event,
8d50e5b4 965 struct perf_sample *sample)
9c90a61c 966{
9fa8727a 967 u64 sample_type = __perf_evlist__combined_sample_type(evlist);
7f3be652 968
9c90a61c 969 if (event->header.type != PERF_RECORD_SAMPLE &&
9fa8727a 970 !perf_evlist__sample_id_all(evlist)) {
9c90a61c
ACM		 971 fputs("-1 -1 ", stdout);
972 return;
973 }
974
7f3be652 975 if ((sample_type & PERF_SAMPLE_CPU))
9c90a61c
ACM		 976 printf("%u ", sample->cpu);
977
7f3be652 978 if (sample_type & PERF_SAMPLE_TIME)
9486aa38 979 printf("%" PRIu64 " ", sample->time);
9c90a61c
ACM		 980}
981
9ede473c
JO		 982static void sample_read__printf(struct perf_sample *sample, u64 read_format)
983{
984 printf("... sample_read:\n");
985
986 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
987 printf("...... time enabled %016" PRIx64 "\n",
988 sample->read.time_enabled);
989
990 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
991 printf("...... time running %016" PRIx64 "\n",
992 sample->read.time_running);
993
994 if (read_format & PERF_FORMAT_GROUP) {
995 u64 i;
996
997 printf(".... group nr %" PRIu64 "\n", sample->read.group.nr);
998
999 for (i = 0; i < sample->read.group.nr; i++) {
1000 struct sample_read_value *value;
1001
1002 value = &sample->read.group.values[i];
1003 printf("..... id %016" PRIx64
1004 ", value %016" PRIx64 "\n",
1005 value->id, value->value);
1006 }
1007 } else
1008 printf("..... id %016" PRIx64 ", value %016" PRIx64 "\n",
1009 sample->read.one.id, sample->read.one.value);
1010}
1011
9fa8727a 1012static void dump_event(struct perf_evlist *evlist, union perf_event *event,
8d50e5b4 1013 u64 file_offset, struct perf_sample *sample)
9aefcab0
TG		 1014{
1015 if (!dump_trace)
1016 return;
1017
9486aa38
ACM		 1018 printf("\n%#" PRIx64 " [%#x]: event: %d\n",
1019 file_offset, event->header.size, event->header.type);
9aefcab0
TG		 1020
1021 trace_event(event);
1022
1023 if (sample)
9fa8727a 1024 perf_evlist__print_tstamp(evlist, event, sample);
9aefcab0 1025
9486aa38 1026 printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset,
8115d60c 1027 event->header.size, perf_event__name(event->header.type));
9aefcab0
TG		 1028}
1029
0f6a3015 1030static void dump_sample(struct perf_evsel *evsel, union perf_event *event,
8d50e5b4 1031 struct perf_sample *sample)
9aefcab0 1032{
7f3be652
ACM		 1033 u64 sample_type;
1034
ddbc24b7
ACM		 1035 if (!dump_trace)
1036 return;
1037
0ea590ae 1038 printf("(IP, 0x%x): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n",
9486aa38 1039 event->header.misc, sample->pid, sample->tid, sample->ip,
7cec0922 1040 sample->period, sample->addr);
9aefcab0 1041
0f6a3015 1042 sample_type = evsel->attr.sample_type;
7f3be652
ACM		 1043
1044 if (sample_type & PERF_SAMPLE_CALLCHAIN)
384b6055 1045 callchain__printf(evsel, sample);
b5387528 1046
384b6055 1047 if ((sample_type & PERF_SAMPLE_BRANCH_STACK) && !has_branch_callstack(evsel))
b5387528 1048 branch_stack__printf(sample);
0f6a3015
JO		 1049
1050 if (sample_type & PERF_SAMPLE_REGS_USER)
352ea45a 1051 regs_user__printf(sample);
0f6a3015 1052
6a21c0b5
SE		 1053 if (sample_type & PERF_SAMPLE_REGS_INTR)
1054 regs_intr__printf(sample);
1055
0f6a3015
JO		 1056 if (sample_type & PERF_SAMPLE_STACK_USER)
1057 stack_user__printf(&sample->user_stack);
05484298
AK		 1058
1059 if (sample_type & PERF_SAMPLE_WEIGHT)
1060 printf("... weight: %" PRIu64 "\n", sample->weight);
98a3b32c
SE		 1061
1062 if (sample_type & PERF_SAMPLE_DATA_SRC)
1063 printf(" . data_src: 0x%"PRIx64"\n", sample->data_src);
9ede473c 1064
475eeab9
AK		 1065 if (sample_type & PERF_SAMPLE_TRANSACTION)
1066 printf("... transaction: %" PRIx64 "\n", sample->transaction);
1067
9ede473c
JO		 1068 if (sample_type & PERF_SAMPLE_READ)
1069 sample_read__printf(sample, evsel->attr.read_format);
9aefcab0
TG		 1070}
1071
54245fdc 1072static struct machine *machines__find_for_cpumode(struct machines *machines,
ef89325f
AH		 1073 union perf_event *event,
1074 struct perf_sample *sample)
743eb868
ACM		 1075{
1076 const u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
ad85ace0 1077 struct machine *machine;
743eb868 1078
7c0f4a41
DA		 1079 if (perf_guest &&
1080 ((cpumode == PERF_RECORD_MISC_GUEST_KERNEL) ||
1081 (cpumode == PERF_RECORD_MISC_GUEST_USER))) {
7fb0a5ee
ND		 1082 u32 pid;
1083
5c5e854b
SE		 1084 if (event->header.type == PERF_RECORD_MMAP
1085 || event->header.type == PERF_RECORD_MMAP2)
7fb0a5ee
ND		 1086 pid = event->mmap.pid;
1087 else
ef89325f 1088 pid = sample->pid;
7fb0a5ee 1089
54245fdc 1090 machine = machines__find(machines, pid);
ad85ace0 1091 if (!machine)
54245fdc 1092 machine = machines__find(machines, DEFAULT_GUEST_KERNEL_ID);
ad85ace0 1093 return machine;
7fb0a5ee 1094 }
743eb868 1095
54245fdc 1096 return &machines->host;
743eb868
ACM		 1097}
1098
313e53b0 1099static int deliver_sample_value(struct perf_evlist *evlist,
e4caec0d
JO		 1100 struct perf_tool *tool,
1101 union perf_event *event,
1102 struct perf_sample *sample,
1103 struct sample_read_value *v,
1104 struct machine *machine)
1105{
313e53b0 1106 struct perf_sample_id *sid = perf_evlist__id2sid(evlist, v->id);
e4caec0d 1107
e4caec0d
JO		 1108 if (sid) {
1109 sample->id = v->id;
1110 sample->period = v->value - sid->period;
1111 sid->period = v->value;
1112 }
1113
1114 if (!sid || sid->evsel == NULL) {
313e53b0 1115 ++evlist->stats.nr_unknown_id;
e4caec0d
JO		 1116 return 0;
1117 }
1118
1119 return tool->sample(tool, event, sample, sid->evsel, machine);
1120}
1121
313e53b0 1122static int deliver_sample_group(struct perf_evlist *evlist,
e4caec0d
JO		 1123 struct perf_tool *tool,
1124 union perf_event *event,
1125 struct perf_sample *sample,
1126 struct machine *machine)
1127{
1128 int ret = -EINVAL;
1129 u64 i;
1130
1131 for (i = 0; i < sample->read.group.nr; i++) {
313e53b0 1132 ret = deliver_sample_value(evlist, tool, event, sample,
e4caec0d
JO		 1133 &sample->read.group.values[i],
1134 machine);
1135 if (ret)
1136 break;
1137 }
1138
1139 return ret;
1140}
1141
1142static int
313e53b0 1143 perf_evlist__deliver_sample(struct perf_evlist *evlist,
e4caec0d
JO		 1144 struct perf_tool *tool,
1145 union perf_event *event,
1146 struct perf_sample *sample,
1147 struct perf_evsel *evsel,
1148 struct machine *machine)
1149{
1150 /* We know evsel != NULL. */
1151 u64 sample_type = evsel->attr.sample_type;
1152 u64 read_format = evsel->attr.read_format;
1153
1154 /* Standard sample delievery. */
1155 if (!(sample_type & PERF_SAMPLE_READ))
1156 return tool->sample(tool, event, sample, evsel, machine);
1157
1158 /* For PERF_SAMPLE_READ we have either single or group mode. */
1159 if (read_format & PERF_FORMAT_GROUP)
313e53b0 1160 return deliver_sample_group(evlist, tool, event, sample,
e4caec0d
JO		 1161 machine);
1162 else
313e53b0 1163 return deliver_sample_value(evlist, tool, event, sample,
e4caec0d
JO		 1164 &sample->read.one, machine);
1165}
1166
d10eb1eb
ACM		 1167static int machines__deliver_event(struct machines *machines,
1168 struct perf_evlist *evlist,
1169 union perf_event *event,
1170 struct perf_sample *sample,
1171 struct perf_tool *tool, u64 file_offset)
cbf41645 1172{
9e69c210 1173 struct perf_evsel *evsel;
743eb868 1174 struct machine *machine;
9e69c210 1175
9fa8727a 1176 dump_event(evlist, event, file_offset, sample);
532e7269 1177
313e53b0 1178 evsel = perf_evlist__id2evsel(evlist, sample->id);
7b27509f 1179
fa713a4e 1180 machine = machines__find_for_cpumode(machines, event, sample);
743eb868 1181
cbf41645
TG		 1182 switch (event->header.type) {
1183 case PERF_RECORD_SAMPLE:
9e69c210 1184 if (evsel == NULL) {
313e53b0 1185 ++evlist->stats.nr_unknown_id;
6782206b 1186 return 0;
9e69c210 1187 }
1b29ac59 1188 dump_sample(evsel, event, sample);
0c095715 1189 if (machine == NULL) {
313e53b0 1190 ++evlist->stats.nr_unprocessable_samples;
6782206b 1191 return 0;
0c095715 1192 }
313e53b0 1193 return perf_evlist__deliver_sample(evlist, tool, event, sample, evsel, machine);
cbf41645 1194 case PERF_RECORD_MMAP:
45694aa7 1195 return tool->mmap(tool, event, sample, machine);
5c5e854b 1196 case PERF_RECORD_MMAP2:
930e6fcd
KL		 1197 if (event->header.misc & PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT)
1198 ++evlist->stats.nr_proc_map_timeout;
5c5e854b 1199 return tool->mmap2(tool, event, sample, machine);
cbf41645 1200 case PERF_RECORD_COMM:
45694aa7 1201 return tool->comm(tool, event, sample, machine);
cbf41645 1202 case PERF_RECORD_FORK:
45694aa7 1203 return tool->fork(tool, event, sample, machine);
cbf41645 1204 case PERF_RECORD_EXIT:
45694aa7 1205 return tool->exit(tool, event, sample, machine);
cbf41645 1206 case PERF_RECORD_LOST:
45694aa7 1207 if (tool->lost == perf_event__process_lost)
313e53b0 1208 evlist->stats.total_lost += event->lost.lost;
45694aa7 1209 return tool->lost(tool, event, sample, machine);
c4937a91
KL		 1210 case PERF_RECORD_LOST_SAMPLES:
1211 if (tool->lost_samples == perf_event__process_lost_samples)
1212 evlist->stats.total_lost_samples += event->lost_samples.lost;
1213 return tool->lost_samples(tool, event, sample, machine);
cbf41645 1214 case PERF_RECORD_READ:
45694aa7 1215 return tool->read(tool, event, sample, evsel, machine);
cbf41645 1216 case PERF_RECORD_THROTTLE:
45694aa7 1217 return tool->throttle(tool, event, sample, machine);
cbf41645 1218 case PERF_RECORD_UNTHROTTLE:
45694aa7 1219 return tool->unthrottle(tool, event, sample, machine);
4a96f7a0 1220 case PERF_RECORD_AUX:
a38f48e3
AH		 1221 if (tool->aux == perf_event__process_aux &&
1222 (event->aux.flags & PERF_AUX_FLAG_TRUNCATED))
1223 evlist->stats.total_aux_lost += 1;
4a96f7a0 1224 return tool->aux(tool, event, sample, machine);
0ad21f68
AH		 1225 case PERF_RECORD_ITRACE_START:
1226 return tool->itrace_start(tool, event, sample, machine);
0286039f
AH		 1227 case PERF_RECORD_SWITCH:
1228 case PERF_RECORD_SWITCH_CPU_WIDE:
1229 return tool->context_switch(tool, event, sample, machine);
cbf41645 1230 default:
313e53b0 1231 ++evlist->stats.nr_unknown_events;
cbf41645
TG		 1232 return -1;
1233 }
1234}
1235
c446870d
AH		 1236static int perf_session__deliver_event(struct perf_session *session,
1237 union perf_event *event,
1238 struct perf_sample *sample,
1239 struct perf_tool *tool,
1240 u64 file_offset)
1241{
1242 int ret;
1243
1244 ret = auxtrace__process_event(session, event, sample, tool);
1245 if (ret < 0)
1246 return ret;
1247 if (ret > 0)
1248 return 0;
1249
1250 return machines__deliver_event(&session->machines, session->evlist,
1251 event, sample, tool, file_offset);
1252}
1253
d5652d86
AH		 1254static s64 perf_session__process_user_event(struct perf_session *session,
1255 union perf_event *event,
d5652d86 1256 u64 file_offset)
06aae590 1257{
d704ebda 1258 struct ordered_events *oe = &session->ordered_events;
9870d780 1259 struct perf_tool *tool = session->tool;
cc9784bd 1260 int fd = perf_data_file__fd(session->file);
10d0f086
ACM		 1261 int err;
1262
9fa8727a 1263 dump_event(session->evlist, event, file_offset, NULL);
06aae590 1264
cbf41645 1265 /* These events are processed right away */
06aae590 1266 switch (event->header.type) {
2c46dbb5 1267 case PERF_RECORD_HEADER_ATTR:
47c3d109 1268 err = tool->attr(tool, event, &session->evlist);
cfe1c414 1269 if (err == 0) {
7b56cce2 1270 perf_session__set_id_hdr_size(session);
cfe1c414
AH		 1271 perf_session__set_comm_exec(session);
1272 }
10d0f086 1273 return err;
f67697bd
JO		 1274 case PERF_RECORD_HEADER_EVENT_TYPE:
1275 /*
1276 * Depreceated, but we need to handle it for sake
1277 * of old data files create in pipe mode.
1278 */
1279 return 0;
9215545e
TZ		 1280 case PERF_RECORD_HEADER_TRACING_DATA:
1281 /* setup for reading amidst mmap */
cc9784bd 1282 lseek(fd, file_offset, SEEK_SET);
47c3d109 1283 return tool->tracing_data(tool, event, session);
c7929e47 1284 case PERF_RECORD_HEADER_BUILD_ID:
45694aa7 1285 return tool->build_id(tool, event, session);
d6b17beb 1286 case PERF_RECORD_FINISHED_ROUND:
d704ebda 1287 return tool->finished_round(tool, event, oe);
3c659eed
AH		 1288 case PERF_RECORD_ID_INDEX:
1289 return tool->id_index(tool, event, session);
a16ac023
AH		 1290 case PERF_RECORD_AUXTRACE_INFO:
1291 return tool->auxtrace_info(tool, event, session);
1292 case PERF_RECORD_AUXTRACE:
1293 /* setup for reading amidst mmap */
1294 lseek(fd, file_offset + event->header.size, SEEK_SET);
1295 return tool->auxtrace(tool, event, session);
e9bf54d2 1296 case PERF_RECORD_AUXTRACE_ERROR:
85ed4729 1297 perf_session__auxtrace_error_inc(session, event);
e9bf54d2 1298 return tool->auxtrace_error(tool, event, session);
5f3339d2
JO		 1299 case PERF_RECORD_THREAD_MAP:
1300 return tool->thread_map(tool, event, session);
6640b6c2
JO		 1301 case PERF_RECORD_CPU_MAP:
1302 return tool->cpu_map(tool, event, session);
374fb9e3
JO		 1303 case PERF_RECORD_STAT_CONFIG:
1304 return tool->stat_config(tool, event, session);
d80518c9
JO		 1305 case PERF_RECORD_STAT:
1306 return tool->stat(tool, event, session);
06aae590 1307 default:
ba74f064 1308 return -EINVAL;
06aae590 1309 }
ba74f064
TG		 1310}
1311
a293829d
AH		 1312int perf_session__deliver_synth_event(struct perf_session *session,
1313 union perf_event *event,
b7b61cbe 1314 struct perf_sample *sample)
a293829d 1315{
fa713a4e 1316 struct perf_evlist *evlist = session->evlist;
9870d780 1317 struct perf_tool *tool = session->tool;
fa713a4e
ACM		 1318
1319 events_stats__inc(&evlist->stats, event->header.type);
a293829d
AH		 1320
1321 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
b7b61cbe 1322 return perf_session__process_user_event(session, event, 0);
a293829d 1323
fa713a4e 1324 return machines__deliver_event(&session->machines, evlist, event, sample, tool, 0);
a293829d
AH		 1325}
1326
268fb20f
JO		 1327static void event_swap(union perf_event *event, bool sample_id_all)
1328{
1329 perf_event__swap_op swap;
1330
1331 swap = perf_event__swap_ops[event->header.type];
1332 if (swap)
1333 swap(event, sample_id_all);
1334}
1335
5a52f33a
AH		 1336int perf_session__peek_event(struct perf_session *session, off_t file_offset,
1337 void *buf, size_t buf_sz,
1338 union perf_event **event_ptr,
1339 struct perf_sample *sample)
1340{
1341 union perf_event *event;
1342 size_t hdr_sz, rest;
1343 int fd;
1344
1345 if (session->one_mmap && !session->header.needs_swap) {
1346 event = file_offset - session->one_mmap_offset +
1347 session->one_mmap_addr;
1348 goto out_parse_sample;
1349 }
1350
1351 if (perf_data_file__is_pipe(session->file))
1352 return -1;
1353
1354 fd = perf_data_file__fd(session->file);
1355 hdr_sz = sizeof(struct perf_event_header);
1356
1357 if (buf_sz < hdr_sz)
1358 return -1;
1359
1360 if (lseek(fd, file_offset, SEEK_SET) == (off_t)-1 ||
554e92ed 1361 readn(fd, buf, hdr_sz) != (ssize_t)hdr_sz)
5a52f33a
AH		 1362 return -1;
1363
1364 event = (union perf_event *)buf;
1365
1366 if (session->header.needs_swap)
1367 perf_event_header__bswap(&event->header);
1368
554e92ed 1369 if (event->header.size < hdr_sz || event->header.size > buf_sz)
5a52f33a
AH		 1370 return -1;
1371
1372 rest = event->header.size - hdr_sz;
1373
554e92ed 1374 if (readn(fd, buf, rest) != (ssize_t)rest)
5a52f33a
AH		 1375 return -1;
1376
1377 if (session->header.needs_swap)
1378 event_swap(event, perf_evlist__sample_id_all(session->evlist));
1379
1380out_parse_sample:
1381
1382 if (sample && event->header.type < PERF_RECORD_USER_TYPE_START &&
1383 perf_evlist__parse_sample(session->evlist, event, sample))
1384 return -1;
1385
1386 *event_ptr = event;
1387
1388 return 0;
1389}
1390
d5652d86 1391static s64 perf_session__process_event(struct perf_session *session,
b7b61cbe 1392 union perf_event *event, u64 file_offset)
ba74f064 1393{
313e53b0 1394 struct perf_evlist *evlist = session->evlist;
9870d780 1395 struct perf_tool *tool = session->tool;
8d50e5b4 1396 struct perf_sample sample;
ba74f064
TG		 1397 int ret;
1398
268fb20f 1399 if (session->header.needs_swap)
313e53b0 1400 event_swap(event, perf_evlist__sample_id_all(evlist));
ba74f064
TG		 1401
1402 if (event->header.type >= PERF_RECORD_HEADER_MAX)
1403 return -EINVAL;
1404
313e53b0 1405 events_stats__inc(&evlist->stats, event->header.type);
ba74f064
TG		 1406
1407 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
b7b61cbe 1408 return perf_session__process_user_event(session, event, file_offset);
cbf41645 1409
3dfc2c0a
TG		 1410 /*
1411 * For all kernel events we get the sample data
1412 */
313e53b0 1413 ret = perf_evlist__parse_sample(evlist, event, &sample);
5538beca
FW		 1414 if (ret)
1415 return ret;
3dfc2c0a 1416
0a8cb85c 1417 if (tool->ordered_events) {
b7b61cbe 1418 ret = perf_session__queue_event(session, event, &sample, file_offset);
cbf41645
TG		 1419 if (ret != -ETIME)
1420 return ret;
1421 }
1422
c446870d
AH		 1423 return perf_session__deliver_event(session, event, &sample, tool,
1424 file_offset);
06aae590
ACM		 1425}
1426
316c7136 1427void perf_event_header__bswap(struct perf_event_header *hdr)
ba21594c 1428{
316c7136
ACM		 1429 hdr->type = bswap_32(hdr->type);
1430 hdr->misc = bswap_16(hdr->misc);
1431 hdr->size = bswap_16(hdr->size);
ba21594c
ACM		 1432}
1433
b424eba2
ACM		 1434struct thread *perf_session__findnew(struct perf_session *session, pid_t pid)
1435{
1fcb8768 1436 return machine__findnew_thread(&session->machines.host, -1, pid);
b424eba2
ACM		 1437}
1438
9d8b172f 1439int perf_session__register_idle_thread(struct perf_session *session)
06aae590 1440{
1fcb8768 1441 struct thread *thread;
9d8b172f 1442 int err = 0;
06aae590 1443
1fcb8768 1444 thread = machine__findnew_thread(&session->machines.host, 0, 0);
162f0bef 1445 if (thread == NULL || thread__set_comm(thread, "swapper", 0)) {
06aae590 1446 pr_err("problem inserting idle task.\n");
9d8b172f 1447 err = -1;
06aae590
ACM		 1448 }
1449
9d8b172f
MH		 1450 /* machine__findnew_thread() got the thread, so put it */
1451 thread__put(thread);
1452 return err;
06aae590
ACM		 1453}
1454
9870d780 1455static void perf_session__warn_about_errors(const struct perf_session *session)
11095994 1456{
9870d780
ACM		 1457 const struct events_stats *stats = &session->evlist->stats;
1458 const struct ordered_events *oe = &session->ordered_events;
1459
1460 if (session->tool->lost == perf_event__process_lost &&
ccda068f 1461 stats->nr_events[PERF_RECORD_LOST] != 0) {
7b27509f
ACM		 1462 ui__warning("Processed %d events and lost %d chunks!\n\n"
1463 "Check IO/CPU overload!\n\n",
ccda068f
ACM		 1464 stats->nr_events[0],
1465 stats->nr_events[PERF_RECORD_LOST]);
11095994
ACM		 1466 }
1467
c4937a91
KL		 1468 if (session->tool->lost_samples == perf_event__process_lost_samples) {
1469 double drop_rate;
1470
1471 drop_rate = (double)stats->total_lost_samples /
1472 (double) (stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples);
1473 if (drop_rate > 0.05) {
6ba29c2f 1474 ui__warning("Processed %" PRIu64 " samples and lost %3.2f%% samples!\n\n",
c4937a91
KL		 1475 stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples,
1476 drop_rate * 100.0);
1477 }
1478 }
1479
a38f48e3
AH		 1480 if (session->tool->aux == perf_event__process_aux &&
1481 stats->total_aux_lost != 0) {
1482 ui__warning("AUX data lost %" PRIu64 " times out of %u!\n\n",
1483 stats->total_aux_lost,
1484 stats->nr_events[PERF_RECORD_AUX]);
1485 }
1486
ccda068f 1487 if (stats->nr_unknown_events != 0) {
11095994
ACM		 1488 ui__warning("Found %u unknown events!\n\n"
1489 "Is this an older tool processing a perf.data "
1490 "file generated by a more recent tool?\n\n"
1491 "If that is not the case, consider "
1492 "reporting to linux-kernel@vger.kernel.org.\n\n",
ccda068f 1493 stats->nr_unknown_events);
11095994
ACM		 1494 }
1495
ccda068f 1496 if (stats->nr_unknown_id != 0) {
9e69c210 1497 ui__warning("%u samples with id not present in the header\n",
ccda068f 1498 stats->nr_unknown_id);
9e69c210
ACM		 1499 }
1500
ccda068f 1501 if (stats->nr_invalid_chains != 0) {
75be989a
ACM		 1502 ui__warning("Found invalid callchains!\n\n"
1503 "%u out of %u events were discarded for this reason.\n\n"
1504 "Consider reporting to linux-kernel@vger.kernel.org.\n\n",
ccda068f
ACM		 1505 stats->nr_invalid_chains,
1506 stats->nr_events[PERF_RECORD_SAMPLE]);
75be989a 1507 }
0c095715 1508
ccda068f 1509 if (stats->nr_unprocessable_samples != 0) {
0c095715
JR		 1510 ui__warning("%u unprocessable samples recorded.\n"
1511 "Do you have a KVM guest running and not using 'perf kvm'?\n",
ccda068f 1512 stats->nr_unprocessable_samples);
0c095715 1513 }
f61ff6c0 1514
9870d780
ACM		 1515 if (oe->nr_unordered_events != 0)
1516 ui__warning("%u out of order events recorded.\n", oe->nr_unordered_events);
85ed4729
AH		 1517
1518 events_stats__auxtrace_error_warn(stats);
930e6fcd
KL		 1519
1520 if (stats->nr_proc_map_timeout != 0) {
1521 ui__warning("%d map information files for pre-existing threads were\n"
1522 "not processed, if there are samples for addresses they\n"
1523 "will not be resolved, you may find out which are these\n"
1524 "threads by running with -v and redirecting the output\n"
9d9cad76
KL		 1525 "to a file.\n"
1526 "The time limit to process proc map is too short?\n"
1527 "Increase it by --proc-map-timeout\n",
930e6fcd
KL		 1528 stats->nr_proc_map_timeout);
1529 }
11095994
ACM		 1530}
1531
a5499b37
AH		 1532static int perf_session__flush_thread_stack(struct thread *thread,
1533 void *p __maybe_unused)
1534{
1535 return thread_stack__flush(thread);
1536}
1537
1538static int perf_session__flush_thread_stacks(struct perf_session *session)
1539{
1540 return machines__for_each_thread(&session->machines,
1541 perf_session__flush_thread_stack,
1542 NULL);
1543}
1544
8dc58101
TZ		 1545volatile int session_done;
1546
b7b61cbe 1547static int __perf_session__process_pipe_events(struct perf_session *session)
8dc58101 1548{
fa713a4e 1549 struct ordered_events *oe = &session->ordered_events;
9870d780 1550 struct perf_tool *tool = session->tool;
316c7136 1551 int fd = perf_data_file__fd(session->file);
444d2866
SE		 1552 union perf_event *event;
1553 uint32_t size, cur_size = 0;
1554 void *buf = NULL;
d5652d86 1555 s64 skip = 0;
8dc58101 1556 u64 head;
727ebd54 1557 ssize_t err;
8dc58101
TZ		 1558 void *p;
1559
45694aa7 1560 perf_tool__fill_defaults(tool);
8dc58101
TZ		 1561
1562 head = 0;
444d2866
SE		 1563 cur_size = sizeof(union perf_event);
1564
1565 buf = malloc(cur_size);
1566 if (!buf)
1567 return -errno;
8dc58101 1568more:
444d2866 1569 event = buf;
cc9784bd 1570 err = readn(fd, event, sizeof(struct perf_event_header));
8dc58101
TZ		 1571 if (err <= 0) {
1572 if (err == 0)
1573 goto done;
1574
1575 pr_err("failed to read event header\n");
1576 goto out_err;
1577 }
1578
316c7136 1579 if (session->header.needs_swap)
444d2866 1580 perf_event_header__bswap(&event->header);
8dc58101 1581
444d2866 1582 size = event->header.size;
27389d78
AH		 1583 if (size < sizeof(struct perf_event_header)) {
1584 pr_err("bad event header size\n");
1585 goto out_err;
1586 }
8dc58101 1587
444d2866
SE		 1588 if (size > cur_size) {
1589 void *new = realloc(buf, size);
1590 if (!new) {
1591 pr_err("failed to allocate memory to read event\n");
1592 goto out_err;
1593 }
1594 buf = new;
1595 cur_size = size;
1596 event = buf;
1597 }
1598 p = event;
8dc58101
TZ		 1599 p += sizeof(struct perf_event_header);
1600
794e43b5 1601 if (size - sizeof(struct perf_event_header)) {
cc9784bd 1602 err = readn(fd, p, size - sizeof(struct perf_event_header));
794e43b5
TZ		 1603 if (err <= 0) {
1604 if (err == 0) {
1605 pr_err("unexpected end of event stream\n");
1606 goto done;
1607 }
8dc58101 1608
794e43b5
TZ		 1609 pr_err("failed to read event data\n");
1610 goto out_err;
1611 }
8dc58101
TZ		 1612 }
1613
b7b61cbe 1614 if ((skip = perf_session__process_event(session, event, head)) < 0) {
9389a460 1615 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
444d2866 1616 head, event->header.size, event->header.type);
9389a460
JO		 1617 err = -EINVAL;
1618 goto out_err;
8dc58101
TZ		 1619 }
1620
1621 head += size;
1622
8dc58101
TZ		 1623 if (skip > 0)
1624 head += skip;
1625
1626 if (!session_done())
1627 goto more;
1628done:
8c16b649 1629 /* do the final flush for ordered samples */
b7b61cbe 1630 err = ordered_events__flush(oe, OE_FLUSH__FINAL);
c446870d
AH		 1631 if (err)
1632 goto out_err;
1633 err = auxtrace__flush_events(session, tool);
a5499b37
AH		 1634 if (err)
1635 goto out_err;
1636 err = perf_session__flush_thread_stacks(session);
8dc58101 1637out_err:
444d2866 1638 free(buf);
9870d780 1639 perf_session__warn_about_errors(session);
adc56ed1 1640 ordered_events__free(&session->ordered_events);
c446870d 1641 auxtrace__free_events(session);
8dc58101
TZ		 1642 return err;
1643}
1644
998bedc8
FW		 1645static union perf_event *
1646fetch_mmaped_event(struct perf_session *session,
1647 u64 head, size_t mmap_size, char *buf)
1648{
1649 union perf_event *event;
1650
1651 /*
1652 * Ensure we have enough space remaining to read
1653 * the size of the event in the headers.
1654 */
1655 if (head + sizeof(event->header) > mmap_size)
1656 return NULL;
1657
1658 event = (union perf_event *)(buf + head);
1659
1660 if (session->header.needs_swap)
1661 perf_event_header__bswap(&event->header);
1662
27389d78
AH		 1663 if (head + event->header.size > mmap_size) {
1664 /* We're not fetching the event so swap back again */
1665 if (session->header.needs_swap)
1666 perf_event_header__bswap(&event->header);
998bedc8 1667 return NULL;
27389d78 1668 }
998bedc8
FW		 1669
1670 return event;
1671}
1672
35d48ddf
DM		 1673/*
1674 * On 64bit we can mmap the data file in one go. No need for tiny mmap
1675 * slices. On 32bit we use 32MB.
1676 */
1677#if BITS_PER_LONG == 64
1678#define MMAP_SIZE ULLONG_MAX
1679#define NUM_MMAPS 1
1680#else
1681#define MMAP_SIZE (32 * 1024 * 1024ULL)
1682#define NUM_MMAPS 128
1683#endif
1684
4ac30cf7
NK		 1685static int __perf_session__process_events(struct perf_session *session,
1686 u64 data_offset, u64 data_size,
b7b61cbe 1687 u64 file_size)
06aae590 1688{
fa713a4e 1689 struct ordered_events *oe = &session->ordered_events;
9870d780 1690 struct perf_tool *tool = session->tool;
cc9784bd 1691 int fd = perf_data_file__fd(session->file);
d5652d86 1692 u64 head, page_offset, file_offset, file_pos, size;
fe174207 1693 int err, mmap_prot, mmap_flags, map_idx = 0;
0c1fe6b2 1694 size_t mmap_size;
35d48ddf 1695 char *buf, *mmaps[NUM_MMAPS];
8115d60c 1696 union perf_event *event;
4d3001fd 1697 struct ui_progress prog;
d5652d86 1698 s64 skip;
0331ee0c 1699
45694aa7 1700 perf_tool__fill_defaults(tool);
06aae590 1701
0331ee0c
TG		 1702 page_offset = page_size * (data_offset / page_size);
1703 file_offset = page_offset;
1704 head = data_offset - page_offset;
06aae590 1705
381c02f6
MR		 1706 if (data_size == 0)
1707 goto out;
1708
1709 if (data_offset + data_size < file_size)
d6513281
TG		 1710 file_size = data_offset + data_size;
1711
4d3001fd 1712 ui_progress__init(&prog, file_size, "Processing events...");
55b44629 1713
35d48ddf 1714 mmap_size = MMAP_SIZE;
919d86d3 1715 if (mmap_size > file_size) {
55b44629 1716 mmap_size = file_size;
919d86d3
AH		 1717 session->one_mmap = true;
1718 }
55b44629 1719
fe174207
TG		 1720 memset(mmaps, 0, sizeof(mmaps));
1721
ba21594c
ACM		 1722 mmap_prot = PROT_READ;
1723 mmap_flags = MAP_SHARED;
1724
0331ee0c 1725 if (session->header.needs_swap) {
ba21594c
ACM		 1726 mmap_prot |= PROT_WRITE;
1727 mmap_flags = MAP_PRIVATE;
1728 }
06aae590 1729remap:
cc9784bd 1730 buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, fd,
55b44629 1731 file_offset);
06aae590
ACM		 1732 if (buf == MAP_FAILED) {
1733 pr_err("failed to mmap file\n");
1734 err = -errno;
1735 goto out_err;
1736 }
fe174207
TG		 1737 mmaps[map_idx] = buf;
1738 map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1);
d6513281 1739 file_pos = file_offset + head;
919d86d3
AH		 1740 if (session->one_mmap) {
1741 session->one_mmap_addr = buf;
1742 session->one_mmap_offset = file_offset;
1743 }
06aae590
ACM		 1744
1745more:
998bedc8
FW		 1746 event = fetch_mmaped_event(session, head, mmap_size, buf);
1747 if (!event) {
fe174207
TG		 1748 if (mmaps[map_idx]) {
1749 munmap(mmaps[map_idx], mmap_size);
1750 mmaps[map_idx] = NULL;
1751 }
06aae590 1752
0331ee0c
TG		 1753 page_offset = page_size * (head / page_size);
1754 file_offset += page_offset;
1755 head -= page_offset;
06aae590
ACM		 1756 goto remap;
1757 }
1758
1759 size = event->header.size;
1760
27389d78 1761 if (size < sizeof(struct perf_event_header) ||
b7b61cbe 1762 (skip = perf_session__process_event(session, event, file_pos)) < 0) {
9389a460
JO		 1763 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
1764 file_offset + head, event->header.size,
1765 event->header.type);
1766 err = -EINVAL;
1767 goto out_err;
06aae590
ACM		 1768 }
1769
6f917c70
AH		 1770 if (skip)
1771 size += skip;
1772
06aae590 1773 head += size;
d6513281 1774 file_pos += size;
06aae590 1775
4d3001fd 1776 ui_progress__update(&prog, size);
55b44629 1777
33e940a2 1778 if (session_done())
8c16b649 1779 goto out;
33e940a2 1780
d6513281 1781 if (file_pos < file_size)
06aae590 1782 goto more;
d6513281 1783
8c16b649 1784out:
c61e52ee 1785 /* do the final flush for ordered samples */
b7b61cbe 1786 err = ordered_events__flush(oe, OE_FLUSH__FINAL);
c446870d
AH		 1787 if (err)
1788 goto out_err;
1789 err = auxtrace__flush_events(session, tool);
a5499b37
AH		 1790 if (err)
1791 goto out_err;
1792 err = perf_session__flush_thread_stacks(session);
06aae590 1793out_err:
a5580f3e 1794 ui_progress__finish();
9870d780 1795 perf_session__warn_about_errors(session);
adc56ed1 1796 ordered_events__free(&session->ordered_events);
c446870d 1797 auxtrace__free_events(session);
919d86d3 1798 session->one_mmap = false;
06aae590
ACM		 1799 return err;
1800}
27295592 1801
b7b61cbe 1802int perf_session__process_events(struct perf_session *session)
6122e4e4 1803{
316c7136 1804 u64 size = perf_data_file__size(session->file);
6122e4e4
ACM		 1805 int err;
1806
9d8b172f 1807 if (perf_session__register_idle_thread(session) < 0)
6122e4e4
ACM		 1808 return -ENOMEM;
1809
316c7136
ACM		 1810 if (!perf_data_file__is_pipe(session->file))
1811 err = __perf_session__process_events(session,
1812 session->header.data_offset,
b7b61cbe 1813 session->header.data_size, size);
8dc58101 1814 else
b7b61cbe 1815 err = __perf_session__process_pipe_events(session);
88ca895d 1816
6122e4e4
ACM		 1817 return err;
1818}
1819
7f3be652 1820bool perf_session__has_traces(struct perf_session *session, const char *msg)
27295592 1821{
93ea01c2
DA		 1822 struct perf_evsel *evsel;
1823
0050f7aa 1824 evlist__for_each(session->evlist, evsel) {
93ea01c2
DA		 1825 if (evsel->attr.type == PERF_TYPE_TRACEPOINT)
1826 return true;
27295592
ACM		 1827 }
1828
93ea01c2
DA		 1829 pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg);
1830 return false;
27295592 1831}
56b03f3c 1832
743eb868
ACM		 1833int maps__set_kallsyms_ref_reloc_sym(struct map **maps,
1834 const char *symbol_name, u64 addr)
56b03f3c
ACM		 1835{
1836 char *bracket;
9de89fe7 1837 enum map_type i;
a1645ce1
ZY		 1838 struct ref_reloc_sym *ref;
1839
1840 ref = zalloc(sizeof(struct ref_reloc_sym));
1841 if (ref == NULL)
1842 return -ENOMEM;
56b03f3c 1843
a1645ce1
ZY		 1844 ref->name = strdup(symbol_name);
1845 if (ref->name == NULL) {
1846 free(ref);
56b03f3c 1847 return -ENOMEM;
a1645ce1 1848 }
56b03f3c 1849
a1645ce1 1850 bracket = strchr(ref->name, ']');
56b03f3c
ACM		 1851 if (bracket)
1852 *bracket = '\0';
1853
a1645ce1 1854 ref->addr = addr;
9de89fe7
ACM		 1855
1856 for (i = 0; i < MAP__NR_TYPES; ++i) {
a1645ce1 1857 struct kmap *kmap = map__kmap(maps[i]);
ba92732e
WN		 1858
1859 if (!kmap)
1860 continue;
a1645ce1 1861 kmap->ref_reloc_sym = ref;
9de89fe7
ACM		 1862 }
1863
56b03f3c
ACM		 1864 return 0;
1865}
1f626bc3 1866
316c7136 1867size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp)
1f626bc3 1868{
316c7136 1869 return machines__fprintf_dsos(&session->machines, fp);
1f626bc3 1870}
f869097e 1871
316c7136 1872size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp,
417c2ff6 1873 bool (skip)(struct dso *dso, int parm), int parm)
f869097e 1874{
316c7136 1875 return machines__fprintf_dsos_buildid(&session->machines, fp, skip, parm);
f869097e 1876}
e248de33
ACM		 1877
1878size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp)
1879{
c446870d
AH		 1880 size_t ret;
1881 const char *msg = "";
1882
1883 if (perf_header__has_feat(&session->header, HEADER_AUXTRACE))
1884 msg = " (excludes AUX area (e.g. instruction trace) decoded / synthesized events)";
1885
fe692ac8 1886 ret = fprintf(fp, "\nAggregated stats:%s\n", msg);
e248de33 1887
75be989a 1888 ret += events_stats__fprintf(&session->evlist->stats, fp);
e248de33
ACM		 1889 return ret;
1890}
c0230b2b 1891
b424eba2
ACM		 1892size_t perf_session__fprintf(struct perf_session *session, FILE *fp)
1893{
1894 /*
1895 * FIXME: Here we have to actually print all the machines in this
1896 * session, not just the host...
1897 */
876650e6 1898 return machine__fprintf(&session->machines.host, fp);
b424eba2
ACM		 1899}
1900
9cbdb702
DA		 1901struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session,
1902 unsigned int type)
1903{
1904 struct perf_evsel *pos;
1905
0050f7aa 1906 evlist__for_each(session->evlist, pos) {
9cbdb702
DA		 1907 if (pos->attr.type == type)
1908 return pos;
1909 }
1910 return NULL;
1911}
1912
a2cb3cf2 1913void perf_evsel__print_ip(struct perf_evsel *evsel, struct perf_sample *sample,
cc22e575 1914 struct addr_location *al,
307cbb92 1915 unsigned int print_opts, unsigned int stack_depth)
c0230b2b 1916{
c0230b2b 1917 struct callchain_cursor_node *node;
a6ffaf91
DA		 1918 int print_ip = print_opts & PRINT_IP_OPT_IP;
1919 int print_sym = print_opts & PRINT_IP_OPT_SYM;
1920 int print_dso = print_opts & PRINT_IP_OPT_DSO;
1921 int print_symoffset = print_opts & PRINT_IP_OPT_SYMOFFSET;
b0b35f01 1922 int print_oneline = print_opts & PRINT_IP_OPT_ONELINE;
cc8fae1d 1923 int print_srcline = print_opts & PRINT_IP_OPT_SRCLINE;
b0b35f01 1924 char s = print_oneline ? ' ' : '\t';
c0230b2b 1925
c0230b2b 1926 if (symbol_conf.use_callchain && sample->callchain) {
a2cb3cf2 1927 struct addr_location node_al;
c0230b2b 1928
cc8b7c2b
ACM		 1929 if (thread__resolve_callchain(al->thread, evsel,
1930 sample, NULL, NULL,
03cd1fed 1931 stack_depth) != 0) {
c0230b2b
DA		 1932 if (verbose)
1933 error("Failed to resolve callchain. Skipping\n");
1934 return;
1935 }
47260645 1936 callchain_cursor_commit(&callchain_cursor);
c0230b2b 1937
a2cb3cf2
AH		 1938 if (print_symoffset)
1939 node_al = *al;
1940
307cbb92 1941 while (stack_depth) {
a4eb24a4
AH		 1942 u64 addr = 0;
1943
47260645 1944 node = callchain_cursor_current(&callchain_cursor);
c0230b2b
DA		 1945 if (!node)
1946 break;
1947
d2ff1b14
DA		 1948 if (node->sym && node->sym->ignore)
1949 goto next;
1950
a6ffaf91 1951 if (print_ip)
b0b35f01 1952 printf("%c%16" PRIx64, s, node->ip);
a6ffaf91 1953
a4eb24a4
AH		 1954 if (node->map)
1955 addr = node->map->map_ip(node->map, node->ip);
1956
787bef17 1957 if (print_sym) {
547a92e0 1958 printf(" ");
251f426f 1959 if (print_symoffset) {
a4eb24a4 1960 node_al.addr = addr;
a2cb3cf2
AH		 1961 node_al.map = node->map;
1962 symbol__fprintf_symname_offs(node->sym, &node_al, stdout);
251f426f
DA		 1963 } else
1964 symbol__fprintf_symname(node->sym, stdout);
610723f2 1965 }
251f426f 1966
610723f2 1967 if (print_dso) {
547a92e0 1968 printf(" (");
52deff71 1969 map__fprintf_dsoname(node->map, stdout);
547a92e0 1970 printf(")");
787bef17 1971 }
b0b35f01 1972
cc8fae1d
AH		 1973 if (print_srcline)
1974 map__fprintf_srcline(node->map, addr, "\n ",
1975 stdout);
1976
b0b35f01
DA		 1977 if (!print_oneline)
1978 printf("\n");
c0230b2b 1979
307cbb92 1980 stack_depth--;
d2ff1b14
DA		 1981next:
1982 callchain_cursor_advance(&callchain_cursor);
c0230b2b
DA		 1983 }
1984
1985 } else {
a2cb3cf2 1986 if (al->sym && al->sym->ignore)
d2ff1b14
DA		 1987 return;
1988
a6ffaf91
DA		 1989 if (print_ip)
1990 printf("%16" PRIx64, sample->ip);
1991
787bef17 1992 if (print_sym) {
547a92e0 1993 printf(" ");
a978f2ab 1994 if (print_symoffset)
a2cb3cf2 1995 symbol__fprintf_symname_offs(al->sym, al,
a978f2ab
AN		 1996 stdout);
1997 else
a2cb3cf2 1998 symbol__fprintf_symname(al->sym, stdout);
610723f2
DA		 1999 }
2000
2001 if (print_dso) {
547a92e0 2002 printf(" (");
a2cb3cf2 2003 map__fprintf_dsoname(al->map, stdout);
547a92e0 2004 printf(")");
787bef17 2005 }
cc8fae1d
AH		 2006
2007 if (print_srcline)
2008 map__fprintf_srcline(al->map, al->addr, "\n ", stdout);
c0230b2b
DA		 2009 }
2010}
5d67be97
AB		 2011
2012int perf_session__cpu_bitmap(struct perf_session *session,
2013 const char *cpu_list, unsigned long *cpu_bitmap)
2014{
8bac41cb 2015 int i, err = -1;
5d67be97
AB		 2016 struct cpu_map *map;
2017
2018 for (i = 0; i < PERF_TYPE_MAX; ++i) {
2019 struct perf_evsel *evsel;
2020
2021 evsel = perf_session__find_first_evtype(session, i);
2022 if (!evsel)
2023 continue;
2024
2025 if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) {
2026 pr_err("File does not contain CPU events. "
2027 "Remove -c option to proceed.\n");
2028 return -1;
2029 }
2030 }
2031
2032 map = cpu_map__new(cpu_list);
47fbe53b
DA		 2033 if (map == NULL) {
2034 pr_err("Invalid cpu_list\n");
2035 return -1;
2036 }
5d67be97
AB		 2037
2038 for (i = 0; i < map->nr; i++) {
2039 int cpu = map->map[i];
2040
2041 if (cpu >= MAX_NR_CPUS) {
2042 pr_err("Requested CPU %d too large. "
2043 "Consider raising MAX_NR_CPUS\n", cpu);
8bac41cb 2044 goto out_delete_map;
5d67be97
AB		 2045 }
2046
2047 set_bit(cpu, cpu_bitmap);
2048 }
2049
8bac41cb
SF		 2050 err = 0;
2051
2052out_delete_map:
f30a79b0 2053 cpu_map__put(map);
8bac41cb 2054 return err;
5d67be97 2055}
fbe96f29
SE		 2056
2057void perf_session__fprintf_info(struct perf_session *session, FILE *fp,
2058 bool full)
2059{
2060 struct stat st;
c5765ece 2061 int fd, ret;
fbe96f29
SE		 2062
2063 if (session == NULL || fp == NULL)
2064 return;
2065
c5765ece
MI		 2066 fd = perf_data_file__fd(session->file);
2067
cc9784bd 2068 ret = fstat(fd, &st);
fbe96f29
SE		 2069 if (ret == -1)
2070 return;
2071
2072 fprintf(fp, "# ========\n");
2073 fprintf(fp, "# captured on: %s", ctime(&st.st_ctime));
2074 perf_header__fprintf_info(session, fp, full);
2075 fprintf(fp, "# ========\n#\n");
2076}
da378962
ACM		 2077
2078
2079int __perf_session__set_tracepoints_handlers(struct perf_session *session,
2080 const struct perf_evsel_str_handler *assocs,
2081 size_t nr_assocs)
2082{
da378962 2083 struct perf_evsel *evsel;
da378962
ACM		 2084 size_t i;
2085 int err;
2086
2087 for (i = 0; i < nr_assocs; i++) {
ccf53eac
ACM		 2088 /*
2089 * Adding a handler for an event not in the session,
2090 * just ignore it.
2091 */
2092 evsel = perf_evlist__find_tracepoint_by_name(session->evlist, assocs[i].name);
da378962 2093 if (evsel == NULL)
ccf53eac 2094 continue;
da378962
ACM		 2095
2096 err = -EEXIST;
744a9719 2097 if (evsel->handler != NULL)
ccf53eac 2098 goto out;
744a9719 2099 evsel->handler = assocs[i].handler;
da378962
ACM		 2100 }
2101
2102 err = 0;
2103out:
2104 return err;
da378962 2105}
3c659eed
AH		 2106
2107int perf_event__process_id_index(struct perf_tool *tool __maybe_unused,
2108 union perf_event *event,
2109 struct perf_session *session)
2110{
2111 struct perf_evlist *evlist = session->evlist;
2112 struct id_index_event *ie = &event->id_index;
2113 size_t i, nr, max_nr;
2114
2115 max_nr = (ie->header.size - sizeof(struct id_index_event)) /
2116 sizeof(struct id_index_entry);
2117 nr = ie->nr;
2118 if (nr > max_nr)
2119 return -EINVAL;
2120
2121 if (dump_trace)
2122 fprintf(stdout, " nr: %zu\n", nr);
2123
2124 for (i = 0; i < nr; i++) {
2125 struct id_index_entry *e = &ie->entries[i];
2126 struct perf_sample_id *sid;
2127
2128 if (dump_trace) {
2129 fprintf(stdout, " ... id: %"PRIu64, e->id);
2130 fprintf(stdout, " idx: %"PRIu64, e->idx);
2131 fprintf(stdout, " cpu: %"PRId64, e->cpu);
2132 fprintf(stdout, " tid: %"PRId64"\n", e->tid);
2133 }
2134
2135 sid = perf_evlist__id2sid(evlist, e->id);
2136 if (!sid)
2137 return -ENOENT;
2138 sid->idx = e->idx;
2139 sid->cpu = e->cpu;
2140 sid->tid = e->tid;
2141 }
2142 return 0;
2143}
2144
2145int perf_event__synthesize_id_index(struct perf_tool *tool,
2146 perf_event__handler_t process,
2147 struct perf_evlist *evlist,
2148 struct machine *machine)
2149{
2150 union perf_event *ev;
2151 struct perf_evsel *evsel;
2152 size_t nr = 0, i = 0, sz, max_nr, n;
2153 int err;
2154
2155 pr_debug2("Synthesizing id index\n");
2156
2157 max_nr = (UINT16_MAX - sizeof(struct id_index_event)) /
2158 sizeof(struct id_index_entry);
2159
cba9b847 2160 evlist__for_each(evlist, evsel)
3c659eed
AH		 2161 nr += evsel->ids;
2162
2163 n = nr > max_nr ? max_nr : nr;
2164 sz = sizeof(struct id_index_event) + n * sizeof(struct id_index_entry);
2165 ev = zalloc(sz);
2166 if (!ev)
2167 return -ENOMEM;
2168
2169 ev->id_index.header.type = PERF_RECORD_ID_INDEX;
2170 ev->id_index.header.size = sz;
2171 ev->id_index.nr = n;
2172
cba9b847 2173 evlist__for_each(evlist, evsel) {
3c659eed
AH		 2174 u32 j;
2175
2176 for (j = 0; j < evsel->ids; j++) {
2177 struct id_index_entry *e;
2178 struct perf_sample_id *sid;
2179
2180 if (i >= n) {
2181 err = process(tool, ev, NULL, machine);
2182 if (err)
2183 goto out_err;
2184 nr -= n;
2185 i = 0;
2186 }
2187
2188 e = &ev->id_index.entries[i++];
2189
2190 e->id = evsel->id[j];
2191
2192 sid = perf_evlist__id2sid(evlist, e->id);
2193 if (!sid) {
2194 free(ev);
2195 return -ENOENT;
2196 }
2197
2198 e->idx = sid->idx;
2199 e->cpu = sid->cpu;
2200 e->tid = sid->tid;
2201 }
2202 }
2203
2204 sz = sizeof(struct id_index_event) + nr * sizeof(struct id_index_entry);
2205 ev->id_index.header.size = sz;
2206 ev->id_index.nr = nr;
2207
2208 err = process(tool, ev, NULL, machine);
2209out_err:
2210 free(ev);
2211
2212 return err;
2213}
Linux kernel - Deliverables
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