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perf tools: Remove EOL whitespaces
[linux-2.6-block.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"
94c744b6 18
316c7136 19static int perf_session__open(struct perf_session *session)
94c744b6 20{
316c7136 21 struct perf_data_file *file = session->file;
8dc58101 22
316c7136 23 if (perf_session__read_header(session) < 0) {
69996df4 24 pr_err("incompatible file format (rerun with -v to learn more)");
6a4d98d7 25 return -1;
94c744b6
ACM		 26 }
27
cc9784bd
JO		 28 if (perf_data_file__is_pipe(file))
29 return 0;
30
316c7136 31 if (!perf_evlist__valid_sample_type(session->evlist)) {
c2a70653 32 pr_err("non matching sample_type");
6a4d98d7 33 return -1;
c2a70653
ACM		 34 }
35
316c7136 36 if (!perf_evlist__valid_sample_id_all(session->evlist)) {
c2a70653 37 pr_err("non matching sample_id_all");
6a4d98d7 38 return -1;
c2a70653
ACM		 39 }
40
316c7136 41 if (!perf_evlist__valid_read_format(session->evlist)) {
9ede473c 42 pr_err("non matching read_format");
6a4d98d7 43 return -1;
9ede473c
JO		 44 }
45
94c744b6 46 return 0;
94c744b6
ACM		 47}
48
7b56cce2 49void perf_session__set_id_hdr_size(struct perf_session *session)
9c90a61c 50{
7b56cce2
ACM		 51 u16 id_hdr_size = perf_evlist__id_hdr_size(session->evlist);
52
7b56cce2 53 machines__set_id_hdr_size(&session->machines, id_hdr_size);
9c90a61c
ACM		 54}
55
316c7136 56int perf_session__create_kernel_maps(struct perf_session *session)
a1645ce1 57{
316c7136 58 int ret = machine__create_kernel_maps(&session->machines.host);
a1645ce1 59
a1645ce1 60 if (ret >= 0)
316c7136 61 ret = machines__create_guest_kernel_maps(&session->machines);
a1645ce1
ZY		 62 return ret;
63}
64
316c7136 65static void perf_session__destroy_kernel_maps(struct perf_session *session)
076c6e45 66{
316c7136 67 machines__destroy_kernel_maps(&session->machines);
076c6e45
ACM		 68}
69
cfe1c414
AH		 70static bool perf_session__has_comm_exec(struct perf_session *session)
71{
72 struct perf_evsel *evsel;
73
74 evlist__for_each(session->evlist, evsel) {
75 if (evsel->attr.comm_exec)
76 return true;
77 }
78
79 return false;
80}
81
82static void perf_session__set_comm_exec(struct perf_session *session)
83{
84 bool comm_exec = perf_session__has_comm_exec(session);
85
86 machines__set_comm_exec(&session->machines, comm_exec);
87}
88
f5fc1412
JO		 89struct perf_session *perf_session__new(struct perf_data_file *file,
90 bool repipe, struct perf_tool *tool)
94c744b6 91{
316c7136 92 struct perf_session *session = zalloc(sizeof(*session));
efad1415 93
316c7136 94 if (!session)
94c744b6
ACM		 95 goto out;
96
316c7136 97 session->repipe = repipe;
36522f5c 98 ordered_events__init(&session->ordered_events);
316c7136 99 machines__init(&session->machines);
94c744b6 100
6a4d98d7
JO		 101 if (file) {
102 if (perf_data_file__open(file))
64abebf7 103 goto out_delete;
6a4d98d7 104
316c7136 105 session->file = file;
6a4d98d7
JO		 106
107 if (perf_data_file__is_read(file)) {
316c7136 108 if (perf_session__open(session) < 0)
6a4d98d7
JO		 109 goto out_close;
110
316c7136 111 perf_session__set_id_hdr_size(session);
cfe1c414 112 perf_session__set_comm_exec(session);
6a4d98d7
JO		 113 }
114 }
115
116 if (!file || perf_data_file__is_write(file)) {
64abebf7
ACM		 117 /*
118 * In O_RDONLY mode this will be performed when reading the
8115d60c 119 * kernel MMAP event, in perf_event__process_mmap().
64abebf7 120 */
316c7136 121 if (perf_session__create_kernel_maps(session) < 0)
a5c2a4c9 122 pr_warning("Cannot read kernel map\n");
64abebf7 123 }
d549c769 124
45694aa7 125 if (tool && tool->ordering_requires_timestamps &&
0a8cb85c 126 tool->ordered_events && !perf_evlist__sample_id_all(session->evlist)) {
21ef97f0 127 dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n");
0a8cb85c 128 tool->ordered_events = false;
21ef97f0
IM		 129 }
130
316c7136 131 return session;
6a4d98d7
JO		 132
133 out_close:
134 perf_data_file__close(file);
135 out_delete:
316c7136 136 perf_session__delete(session);
6a4d98d7 137 out:
4aa65636 138 return NULL;
94c744b6
ACM		 139}
140
b424eba2
ACM		 141static void perf_session__delete_dead_threads(struct perf_session *session)
142{
876650e6 143 machine__delete_dead_threads(&session->machines.host);
b424eba2
ACM		 144}
145
b424eba2
ACM		 146static void perf_session__delete_threads(struct perf_session *session)
147{
876650e6 148 machine__delete_threads(&session->machines.host);
b424eba2
ACM		 149}
150
03cd2094
NK		 151static void perf_session_env__delete(struct perf_session_env *env)
152{
74cf249d
ACM		 153 zfree(&env->hostname);
154 zfree(&env->os_release);
155 zfree(&env->version);
156 zfree(&env->arch);
157 zfree(&env->cpu_desc);
158 zfree(&env->cpuid);
159
160 zfree(&env->cmdline);
161 zfree(&env->sibling_cores);
162 zfree(&env->sibling_threads);
163 zfree(&env->numa_nodes);
164 zfree(&env->pmu_mappings);
03cd2094
NK		 165}
166
316c7136 167void perf_session__delete(struct perf_session *session)
94c744b6 168{
316c7136
ACM		 169 perf_session__destroy_kernel_maps(session);
170 perf_session__delete_dead_threads(session);
171 perf_session__delete_threads(session);
172 perf_session_env__delete(&session->header.env);
173 machines__exit(&session->machines);
174 if (session->file)
175 perf_data_file__close(session->file);
176 free(session);
94c744b6 177}
a328626b 178
47c3d109
AH		 179static int process_event_synth_tracing_data_stub(struct perf_tool *tool
180 __maybe_unused,
181 union perf_event *event
1d037ca1
IT		 182 __maybe_unused,
183 struct perf_session *session
184 __maybe_unused)
d20deb64
ACM		 185{
186 dump_printf(": unhandled!\n");
187 return 0;
188}
189
47c3d109
AH		 190static int process_event_synth_attr_stub(struct perf_tool *tool __maybe_unused,
191 union perf_event *event __maybe_unused,
1d037ca1
IT		 192 struct perf_evlist **pevlist
193 __maybe_unused)
10d0f086
ACM		 194{
195 dump_printf(": unhandled!\n");
196 return 0;
197}
198
1d037ca1
IT		 199static int process_event_sample_stub(struct perf_tool *tool __maybe_unused,
200 union perf_event *event __maybe_unused,
201 struct perf_sample *sample __maybe_unused,
202 struct perf_evsel *evsel __maybe_unused,
203 struct machine *machine __maybe_unused)
9e69c210
ACM		 204{
205 dump_printf(": unhandled!\n");
206 return 0;
207}
208
1d037ca1
IT		 209static int process_event_stub(struct perf_tool *tool __maybe_unused,
210 union perf_event *event __maybe_unused,
211 struct perf_sample *sample __maybe_unused,
212 struct machine *machine __maybe_unused)
06aae590
ACM		 213{
214 dump_printf(": unhandled!\n");
215 return 0;
216}
217
1d037ca1
IT		 218static int process_finished_round_stub(struct perf_tool *tool __maybe_unused,
219 union perf_event *event __maybe_unused,
220 struct perf_session *perf_session
221 __maybe_unused)
743eb868
ACM		 222{
223 dump_printf(": unhandled!\n");
224 return 0;
225}
226
45694aa7 227static int process_finished_round(struct perf_tool *tool,
d20deb64
ACM		 228 union perf_event *event,
229 struct perf_session *session);
d6b17beb 230
3c659eed
AH		 231static int process_id_index_stub(struct perf_tool *tool __maybe_unused,
232 union perf_event *event __maybe_unused,
233 struct perf_session *perf_session
234 __maybe_unused)
235{
236 dump_printf(": unhandled!\n");
237 return 0;
238}
239
9c501402 240void perf_tool__fill_defaults(struct perf_tool *tool)
06aae590 241{
45694aa7
ACM		 242 if (tool->sample == NULL)
243 tool->sample = process_event_sample_stub;
244 if (tool->mmap == NULL)
245 tool->mmap = process_event_stub;
6adb0b0a
DA		 246 if (tool->mmap2 == NULL)
247 tool->mmap2 = process_event_stub;
45694aa7
ACM		 248 if (tool->comm == NULL)
249 tool->comm = process_event_stub;
250 if (tool->fork == NULL)
251 tool->fork = process_event_stub;
252 if (tool->exit == NULL)
253 tool->exit = process_event_stub;
254 if (tool->lost == NULL)
255 tool->lost = perf_event__process_lost;
256 if (tool->read == NULL)
257 tool->read = process_event_sample_stub;
258 if (tool->throttle == NULL)
259 tool->throttle = process_event_stub;
260 if (tool->unthrottle == NULL)
261 tool->unthrottle = process_event_stub;
262 if (tool->attr == NULL)
263 tool->attr = process_event_synth_attr_stub;
45694aa7
ACM		 264 if (tool->tracing_data == NULL)
265 tool->tracing_data = process_event_synth_tracing_data_stub;
266 if (tool->build_id == NULL)
267 tool->build_id = process_finished_round_stub;
268 if (tool->finished_round == NULL) {
0a8cb85c 269 if (tool->ordered_events)
45694aa7 270 tool->finished_round = process_finished_round;
d6b17beb 271 else
45694aa7 272 tool->finished_round = process_finished_round_stub;
d6b17beb 273 }
3c659eed
AH		 274 if (tool->id_index == NULL)
275 tool->id_index = process_id_index_stub;
06aae590 276}
48000a1a 277
268fb20f
JO		 278static void swap_sample_id_all(union perf_event *event, void *data)
279{
280 void *end = (void *) event + event->header.size;
281 int size = end - data;
282
283 BUG_ON(size % sizeof(u64));
284 mem_bswap_64(data, size);
285}
286
287static void perf_event__all64_swap(union perf_event *event,
1d037ca1 288 bool sample_id_all __maybe_unused)
ba21594c 289{
8115d60c
ACM		 290 struct perf_event_header *hdr = &event->header;
291 mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr));
ba21594c
ACM		 292}
293
268fb20f 294static void perf_event__comm_swap(union perf_event *event, bool sample_id_all)
ba21594c 295{
8115d60c
ACM		 296 event->comm.pid = bswap_32(event->comm.pid);
297 event->comm.tid = bswap_32(event->comm.tid);
268fb20f
JO		 298
299 if (sample_id_all) {
300 void *data = &event->comm.comm;
301
9ac3e487 302 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
268fb20f
JO		 303 swap_sample_id_all(event, data);
304 }
ba21594c
ACM		 305}
306
268fb20f
JO		 307static void perf_event__mmap_swap(union perf_event *event,
308 bool sample_id_all)
ba21594c 309{
8115d60c
ACM		 310 event->mmap.pid = bswap_32(event->mmap.pid);
311 event->mmap.tid = bswap_32(event->mmap.tid);
312 event->mmap.start = bswap_64(event->mmap.start);
313 event->mmap.len = bswap_64(event->mmap.len);
314 event->mmap.pgoff = bswap_64(event->mmap.pgoff);
268fb20f
JO		 315
316 if (sample_id_all) {
317 void *data = &event->mmap.filename;
318
9ac3e487 319 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
268fb20f
JO		 320 swap_sample_id_all(event, data);
321 }
ba21594c
ACM		 322}
323
5c5e854b
SE		 324static void perf_event__mmap2_swap(union perf_event *event,
325 bool sample_id_all)
326{
327 event->mmap2.pid = bswap_32(event->mmap2.pid);
328 event->mmap2.tid = bswap_32(event->mmap2.tid);
329 event->mmap2.start = bswap_64(event->mmap2.start);
330 event->mmap2.len = bswap_64(event->mmap2.len);
331 event->mmap2.pgoff = bswap_64(event->mmap2.pgoff);
332 event->mmap2.maj = bswap_32(event->mmap2.maj);
333 event->mmap2.min = bswap_32(event->mmap2.min);
334 event->mmap2.ino = bswap_64(event->mmap2.ino);
335
336 if (sample_id_all) {
337 void *data = &event->mmap2.filename;
338
339 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
340 swap_sample_id_all(event, data);
341 }
342}
268fb20f 343static void perf_event__task_swap(union perf_event *event, bool sample_id_all)
ba21594c 344{
8115d60c
ACM		 345 event->fork.pid = bswap_32(event->fork.pid);
346 event->fork.tid = bswap_32(event->fork.tid);
347 event->fork.ppid = bswap_32(event->fork.ppid);
348 event->fork.ptid = bswap_32(event->fork.ptid);
349 event->fork.time = bswap_64(event->fork.time);
268fb20f
JO		 350
351 if (sample_id_all)
352 swap_sample_id_all(event, &event->fork + 1);
ba21594c
ACM		 353}
354
268fb20f 355static void perf_event__read_swap(union perf_event *event, bool sample_id_all)
ba21594c 356{
8115d60c
ACM		 357 event->read.pid = bswap_32(event->read.pid);
358 event->read.tid = bswap_32(event->read.tid);
359 event->read.value = bswap_64(event->read.value);
360 event->read.time_enabled = bswap_64(event->read.time_enabled);
361 event->read.time_running = bswap_64(event->read.time_running);
362 event->read.id = bswap_64(event->read.id);
268fb20f
JO		 363
364 if (sample_id_all)
365 swap_sample_id_all(event, &event->read + 1);
ba21594c
ACM		 366}
367
dd96c46b
JO		 368static void perf_event__throttle_swap(union perf_event *event,
369 bool sample_id_all)
370{
371 event->throttle.time = bswap_64(event->throttle.time);
372 event->throttle.id = bswap_64(event->throttle.id);
373 event->throttle.stream_id = bswap_64(event->throttle.stream_id);
374
375 if (sample_id_all)
376 swap_sample_id_all(event, &event->throttle + 1);
377}
378
e108c66e
JO		 379static u8 revbyte(u8 b)
380{
381 int rev = (b >> 4) | ((b & 0xf) << 4);
382 rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2);
383 rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1);
384 return (u8) rev;
385}
386
387/*
388 * XXX this is hack in attempt to carry flags bitfield
389 * throught endian village. ABI says:
390 *
391 * Bit-fields are allocated from right to left (least to most significant)
392 * on little-endian implementations and from left to right (most to least
393 * significant) on big-endian implementations.
394 *
395 * The above seems to be byte specific, so we need to reverse each
396 * byte of the bitfield. 'Internet' also says this might be implementation
397 * specific and we probably need proper fix and carry perf_event_attr
398 * bitfield flags in separate data file FEAT_ section. Thought this seems
399 * to work for now.
400 */
401static void swap_bitfield(u8 *p, unsigned len)
402{
403 unsigned i;
404
405 for (i = 0; i < len; i++) {
406 *p = revbyte(*p);
407 p++;
408 }
409}
410
eda3913b
DA		 411/* exported for swapping attributes in file header */
412void perf_event__attr_swap(struct perf_event_attr *attr)
413{
414 attr->type = bswap_32(attr->type);
415 attr->size = bswap_32(attr->size);
416 attr->config = bswap_64(attr->config);
417 attr->sample_period = bswap_64(attr->sample_period);
418 attr->sample_type = bswap_64(attr->sample_type);
419 attr->read_format = bswap_64(attr->read_format);
420 attr->wakeup_events = bswap_32(attr->wakeup_events);
421 attr->bp_type = bswap_32(attr->bp_type);
422 attr->bp_addr = bswap_64(attr->bp_addr);
423 attr->bp_len = bswap_64(attr->bp_len);
7db59528
AH		 424 attr->branch_sample_type = bswap_64(attr->branch_sample_type);
425 attr->sample_regs_user = bswap_64(attr->sample_regs_user);
426 attr->sample_stack_user = bswap_32(attr->sample_stack_user);
e108c66e
JO		 427
428 swap_bitfield((u8 *) (&attr->read_format + 1), sizeof(u64));
eda3913b
DA		 429}
430
268fb20f 431static void perf_event__hdr_attr_swap(union perf_event *event,
1d037ca1 432 bool sample_id_all __maybe_unused)
2c46dbb5
TZ		 433{
434 size_t size;
435
eda3913b 436 perf_event__attr_swap(&event->attr.attr);
2c46dbb5 437
8115d60c
ACM		 438 size = event->header.size;
439 size -= (void *)&event->attr.id - (void *)event;
440 mem_bswap_64(event->attr.id, size);
2c46dbb5
TZ		 441}
442
268fb20f 443static void perf_event__event_type_swap(union perf_event *event,
1d037ca1 444 bool sample_id_all __maybe_unused)
cd19a035 445{
8115d60c
ACM		 446 event->event_type.event_type.event_id =
447 bswap_64(event->event_type.event_type.event_id);
cd19a035
TZ		 448}
449
268fb20f 450static void perf_event__tracing_data_swap(union perf_event *event,
1d037ca1 451 bool sample_id_all __maybe_unused)
9215545e 452{
8115d60c 453 event->tracing_data.size = bswap_32(event->tracing_data.size);
9215545e
TZ		 454}
455
268fb20f
JO		 456typedef void (*perf_event__swap_op)(union perf_event *event,
457 bool sample_id_all);
ba21594c 458
8115d60c
ACM		 459static perf_event__swap_op perf_event__swap_ops[] = {
460 [PERF_RECORD_MMAP] = perf_event__mmap_swap,
5c5e854b 461 [PERF_RECORD_MMAP2] = perf_event__mmap2_swap,
8115d60c
ACM		 462 [PERF_RECORD_COMM] = perf_event__comm_swap,
463 [PERF_RECORD_FORK] = perf_event__task_swap,
464 [PERF_RECORD_EXIT] = perf_event__task_swap,
465 [PERF_RECORD_LOST] = perf_event__all64_swap,
466 [PERF_RECORD_READ] = perf_event__read_swap,
dd96c46b
JO		 467 [PERF_RECORD_THROTTLE] = perf_event__throttle_swap,
468 [PERF_RECORD_UNTHROTTLE] = perf_event__throttle_swap,
8115d60c 469 [PERF_RECORD_SAMPLE] = perf_event__all64_swap,
eda3913b 470 [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap,
8115d60c
ACM		 471 [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap,
472 [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap,
473 [PERF_RECORD_HEADER_BUILD_ID] = NULL,
3c659eed 474 [PERF_RECORD_ID_INDEX] = perf_event__all64_swap,
8115d60c 475 [PERF_RECORD_HEADER_MAX] = NULL,
ba21594c
ACM		 476};
477
d6b17beb
FW		 478/*
479 * When perf record finishes a pass on every buffers, it records this pseudo
480 * event.
481 * We record the max timestamp t found in the pass n.
482 * Assuming these timestamps are monotonic across cpus, we know that if
483 * a buffer still has events with timestamps below t, they will be all
484 * available and then read in the pass n + 1.
485 * Hence when we start to read the pass n + 2, we can safely flush every
486 * events with timestamps below t.
487 *
488 * ============ PASS n =================
489 * CPU 0 | CPU 1
490 * |
491 * cnt1 timestamps | cnt2 timestamps
492 * 1 | 2
493 * 2 | 3
494 * - | 4 <--- max recorded
495 *
496 * ============ PASS n + 1 ==============
497 * CPU 0 | CPU 1
498 * |
499 * cnt1 timestamps | cnt2 timestamps
500 * 3 | 5
501 * 4 | 6
502 * 5 | 7 <---- max recorded
503 *
504 * Flush every events below timestamp 4
505 *
506 * ============ PASS n + 2 ==============
507 * CPU 0 | CPU 1
508 * |
509 * cnt1 timestamps | cnt2 timestamps
510 * 6 | 8
511 * 7 | 9
512 * - | 10
513 *
514 * Flush every events below timestamp 7
515 * etc...
516 */
45694aa7 517static int process_finished_round(struct perf_tool *tool,
1d037ca1 518 union perf_event *event __maybe_unused,
d20deb64 519 struct perf_session *session)
d6b17beb 520{
d8836b5d 521 return ordered_events__flush(session, tool, OE_FLUSH__ROUND);
d6b17beb
FW		 522}
523
e30b88a7 524int perf_session_queue_event(struct perf_session *s, union perf_event *event,
d40b4a15
JO		 525 struct perf_tool *tool, struct perf_sample *sample,
526 u64 file_offset)
c61e52ee 527{
37e39aa8 528 struct ordered_events *oe = &s->ordered_events;
8d50e5b4 529 u64 timestamp = sample->time;
37e39aa8 530 struct ordered_event *new;
c61e52ee 531
79a14c1f 532 if (!timestamp || timestamp == ~0ULL)
cbf41645
TG		 533 return -ETIME;
534
cee3ab9c 535 if (timestamp < oe->last_flush) {
f61ff6c0 536 pr_oe_time(timestamp, "out of order event\n");
b0a45203
JO		 537 pr_oe_time(oe->last_flush, "last flush, last_flush_type %d\n",
538 oe->last_flush_type);
539
f61ff6c0 540 s->stats.nr_unordered_events++;
c61e52ee
FW		 541 }
542
54bf53b1 543 new = ordered_events__new(oe, timestamp, event);
d40b4a15
JO		 544 if (!new) {
545 ordered_events__flush(s, tool, OE_FLUSH__HALF);
54bf53b1 546 new = ordered_events__new(oe, timestamp, event);
d40b4a15
JO		 547 }
548
c64c7e1a
JO		 549 if (!new)
550 return -ENOMEM;
c61e52ee 551
e4c2df13 552 new->file_offset = file_offset;
640c03ce
ACM		 553 return 0;
554}
c61e52ee 555
8d50e5b4 556static void callchain__printf(struct perf_sample *sample)
640c03ce
ACM		 557{
558 unsigned int i;
c61e52ee 559
9486aa38 560 printf("... chain: nr:%" PRIu64 "\n", sample->callchain->nr);
640c03ce
ACM		 561
562 for (i = 0; i < sample->callchain->nr; i++)
9486aa38
ACM		 563 printf("..... %2d: %016" PRIx64 "\n",
564 i, sample->callchain->ips[i]);
c61e52ee
FW		 565}
566
b5387528
RAV		 567static void branch_stack__printf(struct perf_sample *sample)
568{
569 uint64_t i;
570
571 printf("... branch stack: nr:%" PRIu64 "\n", sample->branch_stack->nr);
572
573 for (i = 0; i < sample->branch_stack->nr; i++)
574 printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 "\n",
575 i, sample->branch_stack->entries[i].from,
576 sample->branch_stack->entries[i].to);
577}
578
0f6a3015
JO		 579static void regs_dump__printf(u64 mask, u64 *regs)
580{
581 unsigned rid, i = 0;
582
583 for_each_set_bit(rid, (unsigned long *) &mask, sizeof(mask) * 8) {
584 u64 val = regs[i++];
585
586 printf(".... %-5s 0x%" PRIx64 "\n",
587 perf_reg_name(rid), val);
588 }
589}
590
6a21c0b5
SE		 591static const char *regs_abi[] = {
592 [PERF_SAMPLE_REGS_ABI_NONE] = "none",
593 [PERF_SAMPLE_REGS_ABI_32] = "32-bit",
594 [PERF_SAMPLE_REGS_ABI_64] = "64-bit",
595};
596
597static inline const char *regs_dump_abi(struct regs_dump *d)
598{
599 if (d->abi > PERF_SAMPLE_REGS_ABI_64)
600 return "unknown";
601
602 return regs_abi[d->abi];
603}
604
605static void regs__printf(const char *type, struct regs_dump *regs)
606{
607 u64 mask = regs->mask;
608
609 printf("... %s regs: mask 0x%" PRIx64 " ABI %s\n",
610 type,
611 mask,
612 regs_dump_abi(regs));
613
614 regs_dump__printf(mask, regs->regs);
615}
616
352ea45a 617static void regs_user__printf(struct perf_sample *sample)
0f6a3015
JO		 618{
619 struct regs_dump *user_regs = &sample->user_regs;
620
6a21c0b5
SE		 621 if (user_regs->regs)
622 regs__printf("user", user_regs);
623}
624
625static void regs_intr__printf(struct perf_sample *sample)
626{
627 struct regs_dump *intr_regs = &sample->intr_regs;
628
629 if (intr_regs->regs)
630 regs__printf("intr", intr_regs);
0f6a3015
JO		 631}
632
633static void stack_user__printf(struct stack_dump *dump)
634{
635 printf("... ustack: size %" PRIu64 ", offset 0x%x\n",
636 dump->size, dump->offset);
637}
638
9c90a61c 639static void perf_session__print_tstamp(struct perf_session *session,
8115d60c 640 union perf_event *event,
8d50e5b4 641 struct perf_sample *sample)
9c90a61c 642{
75562573 643 u64 sample_type = __perf_evlist__combined_sample_type(session->evlist);
7f3be652 644
9c90a61c 645 if (event->header.type != PERF_RECORD_SAMPLE &&
5e562474 646 !perf_evlist__sample_id_all(session->evlist)) {
9c90a61c
ACM		 647 fputs("-1 -1 ", stdout);
648 return;
649 }
650
7f3be652 651 if ((sample_type & PERF_SAMPLE_CPU))
9c90a61c
ACM		 652 printf("%u ", sample->cpu);
653
7f3be652 654 if (sample_type & PERF_SAMPLE_TIME)
9486aa38 655 printf("%" PRIu64 " ", sample->time);
9c90a61c
ACM		 656}
657
9ede473c
JO		 658static void sample_read__printf(struct perf_sample *sample, u64 read_format)
659{
660 printf("... sample_read:\n");
661
662 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
663 printf("...... time enabled %016" PRIx64 "\n",
664 sample->read.time_enabled);
665
666 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
667 printf("...... time running %016" PRIx64 "\n",
668 sample->read.time_running);
669
670 if (read_format & PERF_FORMAT_GROUP) {
671 u64 i;
672
673 printf(".... group nr %" PRIu64 "\n", sample->read.group.nr);
674
675 for (i = 0; i < sample->read.group.nr; i++) {
676 struct sample_read_value *value;
677
678 value = &sample->read.group.values[i];
679 printf("..... id %016" PRIx64
680 ", value %016" PRIx64 "\n",
681 value->id, value->value);
682 }
683 } else
684 printf("..... id %016" PRIx64 ", value %016" PRIx64 "\n",
685 sample->read.one.id, sample->read.one.value);
686}
687
8115d60c 688static void dump_event(struct perf_session *session, union perf_event *event,
8d50e5b4 689 u64 file_offset, struct perf_sample *sample)
9aefcab0
TG		 690{
691 if (!dump_trace)
692 return;
693
9486aa38
ACM		 694 printf("\n%#" PRIx64 " [%#x]: event: %d\n",
695 file_offset, event->header.size, event->header.type);
9aefcab0
TG		 696
697 trace_event(event);
698
699 if (sample)
700 perf_session__print_tstamp(session, event, sample);
701
9486aa38 702 printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset,
8115d60c 703 event->header.size, perf_event__name(event->header.type));
9aefcab0
TG		 704}
705
0f6a3015 706static void dump_sample(struct perf_evsel *evsel, union perf_event *event,
8d50e5b4 707 struct perf_sample *sample)
9aefcab0 708{
7f3be652
ACM		 709 u64 sample_type;
710
ddbc24b7
ACM		 711 if (!dump_trace)
712 return;
713
0ea590ae 714 printf("(IP, 0x%x): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n",
9486aa38 715 event->header.misc, sample->pid, sample->tid, sample->ip,
7cec0922 716 sample->period, sample->addr);
9aefcab0 717
0f6a3015 718 sample_type = evsel->attr.sample_type;
7f3be652
ACM		 719
720 if (sample_type & PERF_SAMPLE_CALLCHAIN)
ddbc24b7 721 callchain__printf(sample);
b5387528 722
7f3be652 723 if (sample_type & PERF_SAMPLE_BRANCH_STACK)
b5387528 724 branch_stack__printf(sample);
0f6a3015
JO		 725
726 if (sample_type & PERF_SAMPLE_REGS_USER)
352ea45a 727 regs_user__printf(sample);
0f6a3015 728
6a21c0b5
SE		 729 if (sample_type & PERF_SAMPLE_REGS_INTR)
730 regs_intr__printf(sample);
731
0f6a3015
JO		 732 if (sample_type & PERF_SAMPLE_STACK_USER)
733 stack_user__printf(&sample->user_stack);
05484298
AK		 734
735 if (sample_type & PERF_SAMPLE_WEIGHT)
736 printf("... weight: %" PRIu64 "\n", sample->weight);
98a3b32c
SE		 737
738 if (sample_type & PERF_SAMPLE_DATA_SRC)
739 printf(" . data_src: 0x%"PRIx64"\n", sample->data_src);
9ede473c 740
475eeab9
AK		 741 if (sample_type & PERF_SAMPLE_TRANSACTION)
742 printf("... transaction: %" PRIx64 "\n", sample->transaction);
743
9ede473c
JO		 744 if (sample_type & PERF_SAMPLE_READ)
745 sample_read__printf(sample, evsel->attr.read_format);
9aefcab0
TG		 746}
747
743eb868
ACM		 748static struct machine *
749 perf_session__find_machine_for_cpumode(struct perf_session *session,
ef89325f
AH		 750 union perf_event *event,
751 struct perf_sample *sample)
743eb868
ACM		 752{
753 const u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
ad85ace0 754 struct machine *machine;
743eb868 755
7c0f4a41
DA		 756 if (perf_guest &&
757 ((cpumode == PERF_RECORD_MISC_GUEST_KERNEL) ||
758 (cpumode == PERF_RECORD_MISC_GUEST_USER))) {
7fb0a5ee
ND		 759 u32 pid;
760
5c5e854b
SE		 761 if (event->header.type == PERF_RECORD_MMAP
762 || event->header.type == PERF_RECORD_MMAP2)
7fb0a5ee
ND		 763 pid = event->mmap.pid;
764 else
ef89325f 765 pid = sample->pid;
7fb0a5ee 766
ad85ace0
DY		 767 machine = perf_session__find_machine(session, pid);
768 if (!machine)
769 machine = perf_session__findnew_machine(session,
770 DEFAULT_GUEST_KERNEL_ID);
771 return machine;
7fb0a5ee 772 }
743eb868 773
34ba5122 774 return &session->machines.host;
743eb868
ACM		 775}
776
e4caec0d
JO		 777static int deliver_sample_value(struct perf_session *session,
778 struct perf_tool *tool,
779 union perf_event *event,
780 struct perf_sample *sample,
781 struct sample_read_value *v,
782 struct machine *machine)
783{
784 struct perf_sample_id *sid;
785
786 sid = perf_evlist__id2sid(session->evlist, v->id);
787 if (sid) {
788 sample->id = v->id;
789 sample->period = v->value - sid->period;
790 sid->period = v->value;
791 }
792
793 if (!sid || sid->evsel == NULL) {
794 ++session->stats.nr_unknown_id;
795 return 0;
796 }
797
798 return tool->sample(tool, event, sample, sid->evsel, machine);
799}
800
801static int deliver_sample_group(struct perf_session *session,
802 struct perf_tool *tool,
803 union perf_event *event,
804 struct perf_sample *sample,
805 struct machine *machine)
806{
807 int ret = -EINVAL;
808 u64 i;
809
810 for (i = 0; i < sample->read.group.nr; i++) {
811 ret = deliver_sample_value(session, tool, event, sample,
812 &sample->read.group.values[i],
813 machine);
814 if (ret)
815 break;
816 }
817
818 return ret;
819}
820
821static int
822perf_session__deliver_sample(struct perf_session *session,
823 struct perf_tool *tool,
824 union perf_event *event,
825 struct perf_sample *sample,
826 struct perf_evsel *evsel,
827 struct machine *machine)
828{
829 /* We know evsel != NULL. */
830 u64 sample_type = evsel->attr.sample_type;
831 u64 read_format = evsel->attr.read_format;
832
833 /* Standard sample delievery. */
834 if (!(sample_type & PERF_SAMPLE_READ))
835 return tool->sample(tool, event, sample, evsel, machine);
836
837 /* For PERF_SAMPLE_READ we have either single or group mode. */
838 if (read_format & PERF_FORMAT_GROUP)
839 return deliver_sample_group(session, tool, event, sample,
840 machine);
841 else
842 return deliver_sample_value(session, tool, event, sample,
843 &sample->read.one, machine);
844}
845
79a30fe4
JO		 846int perf_session__deliver_event(struct perf_session *session,
847 union perf_event *event,
848 struct perf_sample *sample,
849 struct perf_tool *tool, u64 file_offset)
cbf41645 850{
9e69c210 851 struct perf_evsel *evsel;
743eb868 852 struct machine *machine;
9e69c210 853
532e7269
TG		 854 dump_event(session, event, file_offset, sample);
855
7b27509f 856 evsel = perf_evlist__id2evsel(session->evlist, sample->id);
7b27509f 857
ef89325f
AH		 858 machine = perf_session__find_machine_for_cpumode(session, event,
859 sample);
743eb868 860
cbf41645
TG		 861 switch (event->header.type) {
862 case PERF_RECORD_SAMPLE:
0f6a3015 863 dump_sample(evsel, event, sample);
9e69c210 864 if (evsel == NULL) {
28a6b6aa 865 ++session->stats.nr_unknown_id;
6782206b 866 return 0;
9e69c210 867 }
0c095715 868 if (machine == NULL) {
28a6b6aa 869 ++session->stats.nr_unprocessable_samples;
6782206b 870 return 0;
0c095715 871 }
e4caec0d
JO		 872 return perf_session__deliver_sample(session, tool, event,
873 sample, evsel, machine);
cbf41645 874 case PERF_RECORD_MMAP:
45694aa7 875 return tool->mmap(tool, event, sample, machine);
5c5e854b
SE		 876 case PERF_RECORD_MMAP2:
877 return tool->mmap2(tool, event, sample, machine);
cbf41645 878 case PERF_RECORD_COMM:
45694aa7 879 return tool->comm(tool, event, sample, machine);
cbf41645 880 case PERF_RECORD_FORK:
45694aa7 881 return tool->fork(tool, event, sample, machine);
cbf41645 882 case PERF_RECORD_EXIT:
45694aa7 883 return tool->exit(tool, event, sample, machine);
cbf41645 884 case PERF_RECORD_LOST:
45694aa7 885 if (tool->lost == perf_event__process_lost)
28a6b6aa 886 session->stats.total_lost += event->lost.lost;
45694aa7 887 return tool->lost(tool, event, sample, machine);
cbf41645 888 case PERF_RECORD_READ:
45694aa7 889 return tool->read(tool, event, sample, evsel, machine);
cbf41645 890 case PERF_RECORD_THROTTLE:
45694aa7 891 return tool->throttle(tool, event, sample, machine);
cbf41645 892 case PERF_RECORD_UNTHROTTLE:
45694aa7 893 return tool->unthrottle(tool, event, sample, machine);
cbf41645 894 default:
28a6b6aa 895 ++session->stats.nr_unknown_events;
cbf41645
TG		 896 return -1;
897 }
898}
899
d5652d86
AH		 900static s64 perf_session__process_user_event(struct perf_session *session,
901 union perf_event *event,
902 struct perf_tool *tool,
903 u64 file_offset)
06aae590 904{
cc9784bd 905 int fd = perf_data_file__fd(session->file);
10d0f086
ACM		 906 int err;
907
ba74f064 908 dump_event(session, event, file_offset, NULL);
06aae590 909
cbf41645 910 /* These events are processed right away */
06aae590 911 switch (event->header.type) {
2c46dbb5 912 case PERF_RECORD_HEADER_ATTR:
47c3d109 913 err = tool->attr(tool, event, &session->evlist);
cfe1c414 914 if (err == 0) {
7b56cce2 915 perf_session__set_id_hdr_size(session);
cfe1c414
AH		 916 perf_session__set_comm_exec(session);
917 }
10d0f086 918 return err;
f67697bd
JO		 919 case PERF_RECORD_HEADER_EVENT_TYPE:
920 /*
921 * Depreceated, but we need to handle it for sake
922 * of old data files create in pipe mode.
923 */
924 return 0;
9215545e
TZ		 925 case PERF_RECORD_HEADER_TRACING_DATA:
926 /* setup for reading amidst mmap */
cc9784bd 927 lseek(fd, file_offset, SEEK_SET);
47c3d109 928 return tool->tracing_data(tool, event, session);
c7929e47 929 case PERF_RECORD_HEADER_BUILD_ID:
45694aa7 930 return tool->build_id(tool, event, session);
d6b17beb 931 case PERF_RECORD_FINISHED_ROUND:
45694aa7 932 return tool->finished_round(tool, event, session);
3c659eed
AH		 933 case PERF_RECORD_ID_INDEX:
934 return tool->id_index(tool, event, session);
06aae590 935 default:
ba74f064 936 return -EINVAL;
06aae590 937 }
ba74f064
TG		 938}
939
a293829d
AH		 940int perf_session__deliver_synth_event(struct perf_session *session,
941 union perf_event *event,
942 struct perf_sample *sample,
943 struct perf_tool *tool)
944{
945 events_stats__inc(&session->stats, event->header.type);
946
947 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
948 return perf_session__process_user_event(session, event, tool, 0);
949
950 return perf_session__deliver_event(session, event, sample, tool, 0);
951}
952
268fb20f
JO		 953static void event_swap(union perf_event *event, bool sample_id_all)
954{
955 perf_event__swap_op swap;
956
957 swap = perf_event__swap_ops[event->header.type];
958 if (swap)
959 swap(event, sample_id_all);
960}
961
5a52f33a
AH		 962int perf_session__peek_event(struct perf_session *session, off_t file_offset,
963 void *buf, size_t buf_sz,
964 union perf_event **event_ptr,
965 struct perf_sample *sample)
966{
967 union perf_event *event;
968 size_t hdr_sz, rest;
969 int fd;
970
971 if (session->one_mmap && !session->header.needs_swap) {
972 event = file_offset - session->one_mmap_offset +
973 session->one_mmap_addr;
974 goto out_parse_sample;
975 }
976
977 if (perf_data_file__is_pipe(session->file))
978 return -1;
979
980 fd = perf_data_file__fd(session->file);
981 hdr_sz = sizeof(struct perf_event_header);
982
983 if (buf_sz < hdr_sz)
984 return -1;
985
986 if (lseek(fd, file_offset, SEEK_SET) == (off_t)-1 ||
987 readn(fd, &buf, hdr_sz) != (ssize_t)hdr_sz)
988 return -1;
989
990 event = (union perf_event *)buf;
991
992 if (session->header.needs_swap)
993 perf_event_header__bswap(&event->header);
994
995 if (event->header.size < hdr_sz)
996 return -1;
997
998 rest = event->header.size - hdr_sz;
999
1000 if (readn(fd, &buf, rest) != (ssize_t)rest)
1001 return -1;
1002
1003 if (session->header.needs_swap)
1004 event_swap(event, perf_evlist__sample_id_all(session->evlist));
1005
1006out_parse_sample:
1007
1008 if (sample && event->header.type < PERF_RECORD_USER_TYPE_START &&
1009 perf_evlist__parse_sample(session->evlist, event, sample))
1010 return -1;
1011
1012 *event_ptr = event;
1013
1014 return 0;
1015}
1016
d5652d86 1017static s64 perf_session__process_event(struct perf_session *session,
e30b88a7
DA		 1018 union perf_event *event,
1019 struct perf_tool *tool,
1020 u64 file_offset)
ba74f064 1021{
8d50e5b4 1022 struct perf_sample sample;
ba74f064
TG		 1023 int ret;
1024
268fb20f 1025 if (session->header.needs_swap)
5e562474 1026 event_swap(event, perf_evlist__sample_id_all(session->evlist));
ba74f064
TG		 1027
1028 if (event->header.type >= PERF_RECORD_HEADER_MAX)
1029 return -EINVAL;
1030
28a6b6aa 1031 events_stats__inc(&session->stats, event->header.type);
ba74f064
TG		 1032
1033 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
45694aa7 1034 return perf_session__process_user_event(session, event, tool, file_offset);
cbf41645 1035
3dfc2c0a
TG		 1036 /*
1037 * For all kernel events we get the sample data
1038 */
0807d2d8 1039 ret = perf_evlist__parse_sample(session->evlist, event, &sample);
5538beca
FW		 1040 if (ret)
1041 return ret;
3dfc2c0a 1042
0a8cb85c 1043 if (tool->ordered_events) {
d40b4a15 1044 ret = perf_session_queue_event(session, event, tool, &sample,
e4c2df13 1045 file_offset);
cbf41645
TG		 1046 if (ret != -ETIME)
1047 return ret;
1048 }
1049
79a30fe4
JO		 1050 return perf_session__deliver_event(session, event, &sample, tool,
1051 file_offset);
06aae590
ACM		 1052}
1053
316c7136 1054void perf_event_header__bswap(struct perf_event_header *hdr)
ba21594c 1055{
316c7136
ACM		 1056 hdr->type = bswap_32(hdr->type);
1057 hdr->misc = bswap_16(hdr->misc);
1058 hdr->size = bswap_16(hdr->size);
ba21594c
ACM		 1059}
1060
b424eba2
ACM		 1061struct thread *perf_session__findnew(struct perf_session *session, pid_t pid)
1062{
1fcb8768 1063 return machine__findnew_thread(&session->machines.host, -1, pid);
b424eba2
ACM		 1064}
1065
316c7136 1066static struct thread *perf_session__register_idle_thread(struct perf_session *session)
06aae590 1067{
1fcb8768 1068 struct thread *thread;
06aae590 1069
1fcb8768 1070 thread = machine__findnew_thread(&session->machines.host, 0, 0);
162f0bef 1071 if (thread == NULL || thread__set_comm(thread, "swapper", 0)) {
06aae590
ACM		 1072 pr_err("problem inserting idle task.\n");
1073 thread = NULL;
1074 }
1075
1076 return thread;
1077}
1078
11095994 1079static void perf_session__warn_about_errors(const struct perf_session *session,
45694aa7 1080 const struct perf_tool *tool)
11095994 1081{
45694aa7 1082 if (tool->lost == perf_event__process_lost &&
28a6b6aa 1083 session->stats.nr_events[PERF_RECORD_LOST] != 0) {
7b27509f
ACM		 1084 ui__warning("Processed %d events and lost %d chunks!\n\n"
1085 "Check IO/CPU overload!\n\n",
28a6b6aa
ACM		 1086 session->stats.nr_events[0],
1087 session->stats.nr_events[PERF_RECORD_LOST]);
11095994
ACM		 1088 }
1089
28a6b6aa 1090 if (session->stats.nr_unknown_events != 0) {
11095994
ACM		 1091 ui__warning("Found %u unknown events!\n\n"
1092 "Is this an older tool processing a perf.data "
1093 "file generated by a more recent tool?\n\n"
1094 "If that is not the case, consider "
1095 "reporting to linux-kernel@vger.kernel.org.\n\n",
28a6b6aa 1096 session->stats.nr_unknown_events);
11095994
ACM		 1097 }
1098
28a6b6aa 1099 if (session->stats.nr_unknown_id != 0) {
9e69c210 1100 ui__warning("%u samples with id not present in the header\n",
28a6b6aa 1101 session->stats.nr_unknown_id);
9e69c210
ACM		 1102 }
1103
28a6b6aa 1104 if (session->stats.nr_invalid_chains != 0) {
11095994
ACM		 1105 ui__warning("Found invalid callchains!\n\n"
1106 "%u out of %u events were discarded for this reason.\n\n"
1107 "Consider reporting to linux-kernel@vger.kernel.org.\n\n",
28a6b6aa
ACM		 1108 session->stats.nr_invalid_chains,
1109 session->stats.nr_events[PERF_RECORD_SAMPLE]);
11095994 1110 }
0c095715 1111
28a6b6aa 1112 if (session->stats.nr_unprocessable_samples != 0) {
0c095715
JR		 1113 ui__warning("%u unprocessable samples recorded.\n"
1114 "Do you have a KVM guest running and not using 'perf kvm'?\n",
28a6b6aa 1115 session->stats.nr_unprocessable_samples);
0c095715 1116 }
f61ff6c0
JO		 1117
1118 if (session->stats.nr_unordered_events != 0)
1119 ui__warning("%u out of order events recorded.\n", session->stats.nr_unordered_events);
11095994
ACM		 1120}
1121
8dc58101
TZ		 1122volatile int session_done;
1123
316c7136 1124static int __perf_session__process_pipe_events(struct perf_session *session,
45694aa7 1125 struct perf_tool *tool)
8dc58101 1126{
316c7136 1127 int fd = perf_data_file__fd(session->file);
444d2866
SE		 1128 union perf_event *event;
1129 uint32_t size, cur_size = 0;
1130 void *buf = NULL;
d5652d86 1131 s64 skip = 0;
8dc58101 1132 u64 head;
727ebd54 1133 ssize_t err;
8dc58101
TZ		 1134 void *p;
1135
45694aa7 1136 perf_tool__fill_defaults(tool);
8dc58101
TZ		 1137
1138 head = 0;
444d2866
SE		 1139 cur_size = sizeof(union perf_event);
1140
1141 buf = malloc(cur_size);
1142 if (!buf)
1143 return -errno;
8dc58101 1144more:
444d2866 1145 event = buf;
cc9784bd 1146 err = readn(fd, event, sizeof(struct perf_event_header));
8dc58101
TZ		 1147 if (err <= 0) {
1148 if (err == 0)
1149 goto done;
1150
1151 pr_err("failed to read event header\n");
1152 goto out_err;
1153 }
1154
316c7136 1155 if (session->header.needs_swap)
444d2866 1156 perf_event_header__bswap(&event->header);
8dc58101 1157
444d2866 1158 size = event->header.size;
27389d78
AH		 1159 if (size < sizeof(struct perf_event_header)) {
1160 pr_err("bad event header size\n");
1161 goto out_err;
1162 }
8dc58101 1163
444d2866
SE		 1164 if (size > cur_size) {
1165 void *new = realloc(buf, size);
1166 if (!new) {
1167 pr_err("failed to allocate memory to read event\n");
1168 goto out_err;
1169 }
1170 buf = new;
1171 cur_size = size;
1172 event = buf;
1173 }
1174 p = event;
8dc58101
TZ		 1175 p += sizeof(struct perf_event_header);
1176
794e43b5 1177 if (size - sizeof(struct perf_event_header)) {
cc9784bd 1178 err = readn(fd, p, size - sizeof(struct perf_event_header));
794e43b5
TZ		 1179 if (err <= 0) {
1180 if (err == 0) {
1181 pr_err("unexpected end of event stream\n");
1182 goto done;
1183 }
8dc58101 1184
794e43b5
TZ		 1185 pr_err("failed to read event data\n");
1186 goto out_err;
1187 }
8dc58101
TZ		 1188 }
1189
316c7136 1190 if ((skip = perf_session__process_event(session, event, tool, head)) < 0) {
9389a460 1191 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
444d2866 1192 head, event->header.size, event->header.type);
9389a460
JO		 1193 err = -EINVAL;
1194 goto out_err;
8dc58101
TZ		 1195 }
1196
1197 head += size;
1198
8dc58101
TZ		 1199 if (skip > 0)
1200 head += skip;
1201
1202 if (!session_done())
1203 goto more;
1204done:
8c16b649 1205 /* do the final flush for ordered samples */
d8836b5d 1206 err = ordered_events__flush(session, tool, OE_FLUSH__FINAL);
8dc58101 1207out_err:
444d2866 1208 free(buf);
316c7136 1209 perf_session__warn_about_errors(session, tool);
adc56ed1 1210 ordered_events__free(&session->ordered_events);
8dc58101
TZ		 1211 return err;
1212}
1213
998bedc8
FW		 1214static union perf_event *
1215fetch_mmaped_event(struct perf_session *session,
1216 u64 head, size_t mmap_size, char *buf)
1217{
1218 union perf_event *event;
1219
1220 /*
1221 * Ensure we have enough space remaining to read
1222 * the size of the event in the headers.
1223 */
1224 if (head + sizeof(event->header) > mmap_size)
1225 return NULL;
1226
1227 event = (union perf_event *)(buf + head);
1228
1229 if (session->header.needs_swap)
1230 perf_event_header__bswap(&event->header);
1231
27389d78
AH		 1232 if (head + event->header.size > mmap_size) {
1233 /* We're not fetching the event so swap back again */
1234 if (session->header.needs_swap)
1235 perf_event_header__bswap(&event->header);
998bedc8 1236 return NULL;
27389d78 1237 }
998bedc8
FW		 1238
1239 return event;
1240}
1241
35d48ddf
DM		 1242/*
1243 * On 64bit we can mmap the data file in one go. No need for tiny mmap
1244 * slices. On 32bit we use 32MB.
1245 */
1246#if BITS_PER_LONG == 64
1247#define MMAP_SIZE ULLONG_MAX
1248#define NUM_MMAPS 1
1249#else
1250#define MMAP_SIZE (32 * 1024 * 1024ULL)
1251#define NUM_MMAPS 128
1252#endif
1253
0331ee0c 1254int __perf_session__process_events(struct perf_session *session,
6122e4e4 1255 u64 data_offset, u64 data_size,
45694aa7 1256 u64 file_size, struct perf_tool *tool)
06aae590 1257{
cc9784bd 1258 int fd = perf_data_file__fd(session->file);
d5652d86 1259 u64 head, page_offset, file_offset, file_pos, size;
fe174207 1260 int err, mmap_prot, mmap_flags, map_idx = 0;
0c1fe6b2 1261 size_t mmap_size;
35d48ddf 1262 char *buf, *mmaps[NUM_MMAPS];
8115d60c 1263 union perf_event *event;
4d3001fd 1264 struct ui_progress prog;
d5652d86 1265 s64 skip;
0331ee0c 1266
45694aa7 1267 perf_tool__fill_defaults(tool);
06aae590 1268
0331ee0c
TG		 1269 page_offset = page_size * (data_offset / page_size);
1270 file_offset = page_offset;
1271 head = data_offset - page_offset;
06aae590 1272
b314e5cf 1273 if (data_size && (data_offset + data_size < file_size))
d6513281
TG		 1274 file_size = data_offset + data_size;
1275
4d3001fd 1276 ui_progress__init(&prog, file_size, "Processing events...");
55b44629 1277
35d48ddf 1278 mmap_size = MMAP_SIZE;
919d86d3 1279 if (mmap_size > file_size) {
55b44629 1280 mmap_size = file_size;
919d86d3
AH		 1281 session->one_mmap = true;
1282 }
55b44629 1283
fe174207
TG		 1284 memset(mmaps, 0, sizeof(mmaps));
1285
ba21594c
ACM		 1286 mmap_prot = PROT_READ;
1287 mmap_flags = MAP_SHARED;
1288
0331ee0c 1289 if (session->header.needs_swap) {
ba21594c
ACM		 1290 mmap_prot |= PROT_WRITE;
1291 mmap_flags = MAP_PRIVATE;
1292 }
06aae590 1293remap:
cc9784bd 1294 buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, fd,
55b44629 1295 file_offset);
06aae590
ACM		 1296 if (buf == MAP_FAILED) {
1297 pr_err("failed to mmap file\n");
1298 err = -errno;
1299 goto out_err;
1300 }
fe174207
TG		 1301 mmaps[map_idx] = buf;
1302 map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1);
d6513281 1303 file_pos = file_offset + head;
919d86d3
AH		 1304 if (session->one_mmap) {
1305 session->one_mmap_addr = buf;
1306 session->one_mmap_offset = file_offset;
1307 }
06aae590
ACM		 1308
1309more:
998bedc8
FW		 1310 event = fetch_mmaped_event(session, head, mmap_size, buf);
1311 if (!event) {
fe174207
TG		 1312 if (mmaps[map_idx]) {
1313 munmap(mmaps[map_idx], mmap_size);
1314 mmaps[map_idx] = NULL;
1315 }
06aae590 1316
0331ee0c
TG		 1317 page_offset = page_size * (head / page_size);
1318 file_offset += page_offset;
1319 head -= page_offset;
06aae590
ACM		 1320 goto remap;
1321 }
1322
1323 size = event->header.size;
1324
27389d78 1325 if (size < sizeof(struct perf_event_header) ||
6f917c70
AH		 1326 (skip = perf_session__process_event(session, event, tool, file_pos))
1327 < 0) {
9389a460
JO		 1328 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
1329 file_offset + head, event->header.size,
1330 event->header.type);
1331 err = -EINVAL;
1332 goto out_err;
06aae590
ACM		 1333 }
1334
6f917c70
AH		 1335 if (skip)
1336 size += skip;
1337
06aae590 1338 head += size;
d6513281 1339 file_pos += size;
06aae590 1340
4d3001fd 1341 ui_progress__update(&prog, size);
55b44629 1342
33e940a2 1343 if (session_done())
8c16b649 1344 goto out;
33e940a2 1345
d6513281 1346 if (file_pos < file_size)
06aae590 1347 goto more;
d6513281 1348
8c16b649 1349out:
c61e52ee 1350 /* do the final flush for ordered samples */
d8836b5d 1351 err = ordered_events__flush(session, tool, OE_FLUSH__FINAL);
06aae590 1352out_err:
a5580f3e 1353 ui_progress__finish();
45694aa7 1354 perf_session__warn_about_errors(session, tool);
adc56ed1 1355 ordered_events__free(&session->ordered_events);
919d86d3 1356 session->one_mmap = false;
06aae590
ACM		 1357 return err;
1358}
27295592 1359
316c7136 1360int perf_session__process_events(struct perf_session *session,
45694aa7 1361 struct perf_tool *tool)
6122e4e4 1362{
316c7136 1363 u64 size = perf_data_file__size(session->file);
6122e4e4
ACM		 1364 int err;
1365
316c7136 1366 if (perf_session__register_idle_thread(session) == NULL)
6122e4e4
ACM		 1367 return -ENOMEM;
1368
316c7136
ACM		 1369 if (!perf_data_file__is_pipe(session->file))
1370 err = __perf_session__process_events(session,
1371 session->header.data_offset,
1372 session->header.data_size,
cc9784bd 1373 size, tool);
8dc58101 1374 else
316c7136 1375 err = __perf_session__process_pipe_events(session, tool);
88ca895d 1376
6122e4e4
ACM		 1377 return err;
1378}
1379
7f3be652 1380bool perf_session__has_traces(struct perf_session *session, const char *msg)
27295592 1381{
93ea01c2
DA		 1382 struct perf_evsel *evsel;
1383
0050f7aa 1384 evlist__for_each(session->evlist, evsel) {
93ea01c2
DA		 1385 if (evsel->attr.type == PERF_TYPE_TRACEPOINT)
1386 return true;
27295592
ACM		 1387 }
1388
93ea01c2
DA		 1389 pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg);
1390 return false;
27295592 1391}
56b03f3c 1392
743eb868
ACM		 1393int maps__set_kallsyms_ref_reloc_sym(struct map **maps,
1394 const char *symbol_name, u64 addr)
56b03f3c
ACM		 1395{
1396 char *bracket;
9de89fe7 1397 enum map_type i;
a1645ce1
ZY		 1398 struct ref_reloc_sym *ref;
1399
1400 ref = zalloc(sizeof(struct ref_reloc_sym));
1401 if (ref == NULL)
1402 return -ENOMEM;
56b03f3c 1403
a1645ce1
ZY		 1404 ref->name = strdup(symbol_name);
1405 if (ref->name == NULL) {
1406 free(ref);
56b03f3c 1407 return -ENOMEM;
a1645ce1 1408 }
56b03f3c 1409
a1645ce1 1410 bracket = strchr(ref->name, ']');
56b03f3c
ACM		 1411 if (bracket)
1412 *bracket = '\0';
1413
a1645ce1 1414 ref->addr = addr;
9de89fe7
ACM		 1415
1416 for (i = 0; i < MAP__NR_TYPES; ++i) {
a1645ce1
ZY		 1417 struct kmap *kmap = map__kmap(maps[i]);
1418 kmap->ref_reloc_sym = ref;
9de89fe7
ACM		 1419 }
1420
56b03f3c
ACM		 1421 return 0;
1422}
1f626bc3 1423
316c7136 1424size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp)
1f626bc3 1425{
316c7136 1426 return machines__fprintf_dsos(&session->machines, fp);
1f626bc3 1427}
f869097e 1428
316c7136 1429size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp,
417c2ff6 1430 bool (skip)(struct dso *dso, int parm), int parm)
f869097e 1431{
316c7136 1432 return machines__fprintf_dsos_buildid(&session->machines, fp, skip, parm);
f869097e 1433}
e248de33
ACM		 1434
1435size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp)
1436{
e248de33
ACM		 1437 size_t ret = fprintf(fp, "Aggregated stats:\n");
1438
28a6b6aa 1439 ret += events_stats__fprintf(&session->stats, fp);
e248de33
ACM		 1440 return ret;
1441}
c0230b2b 1442
b424eba2
ACM		 1443size_t perf_session__fprintf(struct perf_session *session, FILE *fp)
1444{
1445 /*
1446 * FIXME: Here we have to actually print all the machines in this
1447 * session, not just the host...
1448 */
876650e6 1449 return machine__fprintf(&session->machines.host, fp);
b424eba2
ACM		 1450}
1451
9cbdb702
DA		 1452struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session,
1453 unsigned int type)
1454{
1455 struct perf_evsel *pos;
1456
0050f7aa 1457 evlist__for_each(session->evlist, pos) {
9cbdb702
DA		 1458 if (pos->attr.type == type)
1459 return pos;
1460 }
1461 return NULL;
1462}
1463
a2cb3cf2 1464void perf_evsel__print_ip(struct perf_evsel *evsel, struct perf_sample *sample,
cc22e575 1465 struct addr_location *al,
307cbb92 1466 unsigned int print_opts, unsigned int stack_depth)
c0230b2b 1467{
c0230b2b 1468 struct callchain_cursor_node *node;
a6ffaf91
DA		 1469 int print_ip = print_opts & PRINT_IP_OPT_IP;
1470 int print_sym = print_opts & PRINT_IP_OPT_SYM;
1471 int print_dso = print_opts & PRINT_IP_OPT_DSO;
1472 int print_symoffset = print_opts & PRINT_IP_OPT_SYMOFFSET;
b0b35f01 1473 int print_oneline = print_opts & PRINT_IP_OPT_ONELINE;
cc8fae1d 1474 int print_srcline = print_opts & PRINT_IP_OPT_SRCLINE;
b0b35f01 1475 char s = print_oneline ? ' ' : '\t';
c0230b2b 1476
c0230b2b 1477 if (symbol_conf.use_callchain && sample->callchain) {
a2cb3cf2 1478 struct addr_location node_al;
c0230b2b 1479
cc8b7c2b
ACM		 1480 if (thread__resolve_callchain(al->thread, evsel,
1481 sample, NULL, NULL,
1482 PERF_MAX_STACK_DEPTH) != 0) {
c0230b2b
DA		 1483 if (verbose)
1484 error("Failed to resolve callchain. Skipping\n");
1485 return;
1486 }
47260645 1487 callchain_cursor_commit(&callchain_cursor);
c0230b2b 1488
a2cb3cf2
AH		 1489 if (print_symoffset)
1490 node_al = *al;
1491
307cbb92 1492 while (stack_depth) {
a4eb24a4
AH		 1493 u64 addr = 0;
1494
47260645 1495 node = callchain_cursor_current(&callchain_cursor);
c0230b2b
DA		 1496 if (!node)
1497 break;
1498
d2ff1b14
DA		 1499 if (node->sym && node->sym->ignore)
1500 goto next;
1501
a6ffaf91 1502 if (print_ip)
b0b35f01 1503 printf("%c%16" PRIx64, s, node->ip);
a6ffaf91 1504
a4eb24a4
AH		 1505 if (node->map)
1506 addr = node->map->map_ip(node->map, node->ip);
1507
787bef17 1508 if (print_sym) {
547a92e0 1509 printf(" ");
251f426f 1510 if (print_symoffset) {
a4eb24a4 1511 node_al.addr = addr;
a2cb3cf2
AH		 1512 node_al.map = node->map;
1513 symbol__fprintf_symname_offs(node->sym, &node_al, stdout);
251f426f
DA		 1514 } else
1515 symbol__fprintf_symname(node->sym, stdout);
610723f2 1516 }
251f426f 1517
610723f2 1518 if (print_dso) {
547a92e0 1519 printf(" (");
52deff71 1520 map__fprintf_dsoname(node->map, stdout);
547a92e0 1521 printf(")");
787bef17 1522 }
b0b35f01 1523
cc8fae1d
AH		 1524 if (print_srcline)
1525 map__fprintf_srcline(node->map, addr, "\n ",
1526 stdout);
1527
b0b35f01
DA		 1528 if (!print_oneline)
1529 printf("\n");
c0230b2b 1530
307cbb92 1531 stack_depth--;
d2ff1b14
DA		 1532next:
1533 callchain_cursor_advance(&callchain_cursor);
c0230b2b
DA		 1534 }
1535
1536 } else {
a2cb3cf2 1537 if (al->sym && al->sym->ignore)
d2ff1b14
DA		 1538 return;
1539
a6ffaf91
DA		 1540 if (print_ip)
1541 printf("%16" PRIx64, sample->ip);
1542
787bef17 1543 if (print_sym) {
547a92e0 1544 printf(" ");
a978f2ab 1545 if (print_symoffset)
a2cb3cf2 1546 symbol__fprintf_symname_offs(al->sym, al,
a978f2ab
AN		 1547 stdout);
1548 else
a2cb3cf2 1549 symbol__fprintf_symname(al->sym, stdout);
610723f2
DA		 1550 }
1551
1552 if (print_dso) {
547a92e0 1553 printf(" (");
a2cb3cf2 1554 map__fprintf_dsoname(al->map, stdout);
547a92e0 1555 printf(")");
787bef17 1556 }
cc8fae1d
AH		 1557
1558 if (print_srcline)
1559 map__fprintf_srcline(al->map, al->addr, "\n ", stdout);
c0230b2b
DA		 1560 }
1561}
5d67be97
AB		 1562
1563int perf_session__cpu_bitmap(struct perf_session *session,
1564 const char *cpu_list, unsigned long *cpu_bitmap)
1565{
8bac41cb 1566 int i, err = -1;
5d67be97
AB		 1567 struct cpu_map *map;
1568
1569 for (i = 0; i < PERF_TYPE_MAX; ++i) {
1570 struct perf_evsel *evsel;
1571
1572 evsel = perf_session__find_first_evtype(session, i);
1573 if (!evsel)
1574 continue;
1575
1576 if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) {
1577 pr_err("File does not contain CPU events. "
1578 "Remove -c option to proceed.\n");
1579 return -1;
1580 }
1581 }
1582
1583 map = cpu_map__new(cpu_list);
47fbe53b
DA		 1584 if (map == NULL) {
1585 pr_err("Invalid cpu_list\n");
1586 return -1;
1587 }
5d67be97
AB		 1588
1589 for (i = 0; i < map->nr; i++) {
1590 int cpu = map->map[i];
1591
1592 if (cpu >= MAX_NR_CPUS) {
1593 pr_err("Requested CPU %d too large. "
1594 "Consider raising MAX_NR_CPUS\n", cpu);
8bac41cb 1595 goto out_delete_map;
5d67be97
AB		 1596 }
1597
1598 set_bit(cpu, cpu_bitmap);
1599 }
1600
8bac41cb
SF		 1601 err = 0;
1602
1603out_delete_map:
1604 cpu_map__delete(map);
1605 return err;
5d67be97 1606}
fbe96f29
SE		 1607
1608void perf_session__fprintf_info(struct perf_session *session, FILE *fp,
1609 bool full)
1610{
1611 struct stat st;
c5765ece 1612 int fd, ret;
fbe96f29
SE		 1613
1614 if (session == NULL || fp == NULL)
1615 return;
1616
c5765ece
MI		 1617 fd = perf_data_file__fd(session->file);
1618
cc9784bd 1619 ret = fstat(fd, &st);
fbe96f29
SE		 1620 if (ret == -1)
1621 return;
1622
1623 fprintf(fp, "# ========\n");
1624 fprintf(fp, "# captured on: %s", ctime(&st.st_ctime));
1625 perf_header__fprintf_info(session, fp, full);
1626 fprintf(fp, "# ========\n#\n");
1627}
da378962
ACM		 1628
1629
1630int __perf_session__set_tracepoints_handlers(struct perf_session *session,
1631 const struct perf_evsel_str_handler *assocs,
1632 size_t nr_assocs)
1633{
da378962 1634 struct perf_evsel *evsel;
da378962
ACM		 1635 size_t i;
1636 int err;
1637
1638 for (i = 0; i < nr_assocs; i++) {
ccf53eac
ACM		 1639 /*
1640 * Adding a handler for an event not in the session,
1641 * just ignore it.
1642 */
1643 evsel = perf_evlist__find_tracepoint_by_name(session->evlist, assocs[i].name);
da378962 1644 if (evsel == NULL)
ccf53eac 1645 continue;
da378962
ACM		 1646
1647 err = -EEXIST;
744a9719 1648 if (evsel->handler != NULL)
ccf53eac 1649 goto out;
744a9719 1650 evsel->handler = assocs[i].handler;
da378962
ACM		 1651 }
1652
1653 err = 0;
1654out:
1655 return err;
da378962 1656}
3c659eed
AH		 1657
1658int perf_event__process_id_index(struct perf_tool *tool __maybe_unused,
1659 union perf_event *event,
1660 struct perf_session *session)
1661{
1662 struct perf_evlist *evlist = session->evlist;
1663 struct id_index_event *ie = &event->id_index;
1664 size_t i, nr, max_nr;
1665
1666 max_nr = (ie->header.size - sizeof(struct id_index_event)) /
1667 sizeof(struct id_index_entry);
1668 nr = ie->nr;
1669 if (nr > max_nr)
1670 return -EINVAL;
1671
1672 if (dump_trace)
1673 fprintf(stdout, " nr: %zu\n", nr);
1674
1675 for (i = 0; i < nr; i++) {
1676 struct id_index_entry *e = &ie->entries[i];
1677 struct perf_sample_id *sid;
1678
1679 if (dump_trace) {
1680 fprintf(stdout, " ... id: %"PRIu64, e->id);
1681 fprintf(stdout, " idx: %"PRIu64, e->idx);
1682 fprintf(stdout, " cpu: %"PRId64, e->cpu);
1683 fprintf(stdout, " tid: %"PRId64"\n", e->tid);
1684 }
1685
1686 sid = perf_evlist__id2sid(evlist, e->id);
1687 if (!sid)
1688 return -ENOENT;
1689 sid->idx = e->idx;
1690 sid->cpu = e->cpu;
1691 sid->tid = e->tid;
1692 }
1693 return 0;
1694}
1695
1696int perf_event__synthesize_id_index(struct perf_tool *tool,
1697 perf_event__handler_t process,
1698 struct perf_evlist *evlist,
1699 struct machine *machine)
1700{
1701 union perf_event *ev;
1702 struct perf_evsel *evsel;
1703 size_t nr = 0, i = 0, sz, max_nr, n;
1704 int err;
1705
1706 pr_debug2("Synthesizing id index\n");
1707
1708 max_nr = (UINT16_MAX - sizeof(struct id_index_event)) /
1709 sizeof(struct id_index_entry);
1710
cba9b847 1711 evlist__for_each(evlist, evsel)
3c659eed
AH		 1712 nr += evsel->ids;
1713
1714 n = nr > max_nr ? max_nr : nr;
1715 sz = sizeof(struct id_index_event) + n * sizeof(struct id_index_entry);
1716 ev = zalloc(sz);
1717 if (!ev)
1718 return -ENOMEM;
1719
1720 ev->id_index.header.type = PERF_RECORD_ID_INDEX;
1721 ev->id_index.header.size = sz;
1722 ev->id_index.nr = n;
1723
cba9b847 1724 evlist__for_each(evlist, evsel) {
3c659eed
AH		 1725 u32 j;
1726
1727 for (j = 0; j < evsel->ids; j++) {
1728 struct id_index_entry *e;
1729 struct perf_sample_id *sid;
1730
1731 if (i >= n) {
1732 err = process(tool, ev, NULL, machine);
1733 if (err)
1734 goto out_err;
1735 nr -= n;
1736 i = 0;
1737 }
1738
1739 e = &ev->id_index.entries[i++];
1740
1741 e->id = evsel->id[j];
1742
1743 sid = perf_evlist__id2sid(evlist, e->id);
1744 if (!sid) {
1745 free(ev);
1746 return -ENOENT;
1747 }
1748
1749 e->idx = sid->idx;
1750 e->cpu = sid->cpu;
1751 e->tid = sid->tid;
1752 }
1753 }
1754
1755 sz = sizeof(struct id_index_event) + nr * sizeof(struct id_index_entry);
1756 ev->id_index.header.size = sz;
1757 ev->id_index.nr = nr;
1758
1759 err = process(tool, ev, NULL, machine);
1760out_err:
1761 free(ev);
1762
1763 return err;
1764}
Linux 6.x block layer and io_uring tree(s)