Commit | Line | Data |
---|---|---|
b8f46c5a XG |
1 | #define _FILE_OFFSET_BITS 64 |
2 | ||
94c744b6 ACM |
3 | #include <linux/kernel.h> |
4 | ||
ba21594c | 5 | #include <byteswap.h> |
94c744b6 ACM |
6 | #include <unistd.h> |
7 | #include <sys/types.h> | |
a41794cd | 8 | #include <sys/mman.h> |
94c744b6 | 9 | |
e248de33 ACM |
10 | #include "evlist.h" |
11 | #include "evsel.h" | |
94c744b6 | 12 | #include "session.h" |
a328626b | 13 | #include "sort.h" |
94c744b6 ACM |
14 | #include "util.h" |
15 | ||
16 | static int perf_session__open(struct perf_session *self, bool force) | |
17 | { | |
18 | struct stat input_stat; | |
19 | ||
8dc58101 TZ |
20 | if (!strcmp(self->filename, "-")) { |
21 | self->fd_pipe = true; | |
22 | self->fd = STDIN_FILENO; | |
23 | ||
a91e5431 | 24 | if (perf_session__read_header(self, self->fd) < 0) |
8dc58101 TZ |
25 | pr_err("incompatible file format"); |
26 | ||
27 | return 0; | |
28 | } | |
29 | ||
f887f301 | 30 | self->fd = open(self->filename, O_RDONLY); |
94c744b6 | 31 | if (self->fd < 0) { |
0f2c3de2 AI |
32 | int err = errno; |
33 | ||
34 | pr_err("failed to open %s: %s", self->filename, strerror(err)); | |
35 | if (err == ENOENT && !strcmp(self->filename, "perf.data")) | |
94c744b6 ACM |
36 | pr_err(" (try 'perf record' first)"); |
37 | pr_err("\n"); | |
38 | return -errno; | |
39 | } | |
40 | ||
41 | if (fstat(self->fd, &input_stat) < 0) | |
42 | goto out_close; | |
43 | ||
44 | if (!force && input_stat.st_uid && (input_stat.st_uid != geteuid())) { | |
45 | pr_err("file %s not owned by current user or root\n", | |
46 | self->filename); | |
47 | goto out_close; | |
48 | } | |
49 | ||
50 | if (!input_stat.st_size) { | |
51 | pr_info("zero-sized file (%s), nothing to do!\n", | |
52 | self->filename); | |
53 | goto out_close; | |
54 | } | |
55 | ||
a91e5431 | 56 | if (perf_session__read_header(self, self->fd) < 0) { |
94c744b6 ACM |
57 | pr_err("incompatible file format"); |
58 | goto out_close; | |
59 | } | |
60 | ||
61 | self->size = input_stat.st_size; | |
62 | return 0; | |
63 | ||
64 | out_close: | |
65 | close(self->fd); | |
66 | self->fd = -1; | |
67 | return -1; | |
68 | } | |
69 | ||
9c90a61c | 70 | static void perf_session__id_header_size(struct perf_session *session) |
8dc58101 | 71 | { |
8d50e5b4 | 72 | struct perf_sample *data; |
9c90a61c ACM |
73 | u64 sample_type = session->sample_type; |
74 | u16 size = 0; | |
75 | ||
76 | if (!session->sample_id_all) | |
77 | goto out; | |
78 | ||
79 | if (sample_type & PERF_SAMPLE_TID) | |
80 | size += sizeof(data->tid) * 2; | |
81 | ||
82 | if (sample_type & PERF_SAMPLE_TIME) | |
83 | size += sizeof(data->time); | |
84 | ||
85 | if (sample_type & PERF_SAMPLE_ID) | |
86 | size += sizeof(data->id); | |
87 | ||
88 | if (sample_type & PERF_SAMPLE_STREAM_ID) | |
89 | size += sizeof(data->stream_id); | |
90 | ||
91 | if (sample_type & PERF_SAMPLE_CPU) | |
92 | size += sizeof(data->cpu) * 2; | |
93 | out: | |
94 | session->id_hdr_size = size; | |
95 | } | |
96 | ||
9c90a61c ACM |
97 | void perf_session__update_sample_type(struct perf_session *self) |
98 | { | |
a91e5431 | 99 | self->sample_type = perf_evlist__sample_type(self->evlist); |
a2854124 | 100 | self->sample_size = perf_sample_size(self->sample_type); |
a91e5431 | 101 | self->sample_id_all = perf_evlist__sample_id_all(self->evlist); |
9c90a61c ACM |
102 | perf_session__id_header_size(self); |
103 | } | |
104 | ||
a1645ce1 ZY |
105 | int perf_session__create_kernel_maps(struct perf_session *self) |
106 | { | |
d118f8ba | 107 | int ret = machine__create_kernel_maps(&self->host_machine); |
a1645ce1 | 108 | |
a1645ce1 | 109 | if (ret >= 0) |
d118f8ba | 110 | ret = machines__create_guest_kernel_maps(&self->machines); |
a1645ce1 ZY |
111 | return ret; |
112 | } | |
113 | ||
076c6e45 ACM |
114 | static void perf_session__destroy_kernel_maps(struct perf_session *self) |
115 | { | |
116 | machine__destroy_kernel_maps(&self->host_machine); | |
117 | machines__destroy_guest_kernel_maps(&self->machines); | |
118 | } | |
119 | ||
21ef97f0 IM |
120 | struct perf_session *perf_session__new(const char *filename, int mode, |
121 | bool force, bool repipe, | |
122 | struct perf_event_ops *ops) | |
94c744b6 | 123 | { |
b3165f41 | 124 | size_t len = filename ? strlen(filename) + 1 : 0; |
94c744b6 ACM |
125 | struct perf_session *self = zalloc(sizeof(*self) + len); |
126 | ||
127 | if (self == NULL) | |
128 | goto out; | |
129 | ||
94c744b6 | 130 | memcpy(self->filename, filename, len); |
b3165f41 | 131 | self->threads = RB_ROOT; |
720a3aeb | 132 | INIT_LIST_HEAD(&self->dead_threads); |
b3165f41 | 133 | self->last_match = NULL; |
55b44629 TG |
134 | /* |
135 | * On 64bit we can mmap the data file in one go. No need for tiny mmap | |
136 | * slices. On 32bit we use 32MB. | |
137 | */ | |
138 | #if BITS_PER_LONG == 64 | |
139 | self->mmap_window = ULLONG_MAX; | |
140 | #else | |
141 | self->mmap_window = 32 * 1024 * 1024ULL; | |
142 | #endif | |
23346f21 | 143 | self->machines = RB_ROOT; |
454c407e | 144 | self->repipe = repipe; |
a1225dec | 145 | INIT_LIST_HEAD(&self->ordered_samples.samples); |
020bb75a | 146 | INIT_LIST_HEAD(&self->ordered_samples.sample_cache); |
5c891f38 | 147 | INIT_LIST_HEAD(&self->ordered_samples.to_free); |
1f626bc3 | 148 | machine__init(&self->host_machine, "", HOST_KERNEL_ID); |
94c744b6 | 149 | |
64abebf7 ACM |
150 | if (mode == O_RDONLY) { |
151 | if (perf_session__open(self, force) < 0) | |
152 | goto out_delete; | |
a91e5431 | 153 | perf_session__update_sample_type(self); |
64abebf7 ACM |
154 | } else if (mode == O_WRONLY) { |
155 | /* | |
156 | * In O_RDONLY mode this will be performed when reading the | |
8115d60c | 157 | * kernel MMAP event, in perf_event__process_mmap(). |
64abebf7 ACM |
158 | */ |
159 | if (perf_session__create_kernel_maps(self) < 0) | |
160 | goto out_delete; | |
161 | } | |
d549c769 | 162 | |
21ef97f0 IM |
163 | if (ops && ops->ordering_requires_timestamps && |
164 | ops->ordered_samples && !self->sample_id_all) { | |
165 | dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n"); | |
166 | ops->ordered_samples = false; | |
167 | } | |
168 | ||
94c744b6 ACM |
169 | out: |
170 | return self; | |
4aa65636 ACM |
171 | out_delete: |
172 | perf_session__delete(self); | |
173 | return NULL; | |
94c744b6 ACM |
174 | } |
175 | ||
d65a458b ACM |
176 | static void perf_session__delete_dead_threads(struct perf_session *self) |
177 | { | |
178 | struct thread *n, *t; | |
179 | ||
180 | list_for_each_entry_safe(t, n, &self->dead_threads, node) { | |
181 | list_del(&t->node); | |
182 | thread__delete(t); | |
183 | } | |
184 | } | |
185 | ||
186 | static void perf_session__delete_threads(struct perf_session *self) | |
187 | { | |
188 | struct rb_node *nd = rb_first(&self->threads); | |
189 | ||
190 | while (nd) { | |
191 | struct thread *t = rb_entry(nd, struct thread, rb_node); | |
192 | ||
193 | rb_erase(&t->rb_node, &self->threads); | |
194 | nd = rb_next(nd); | |
195 | thread__delete(t); | |
196 | } | |
197 | } | |
198 | ||
94c744b6 ACM |
199 | void perf_session__delete(struct perf_session *self) |
200 | { | |
076c6e45 | 201 | perf_session__destroy_kernel_maps(self); |
d65a458b ACM |
202 | perf_session__delete_dead_threads(self); |
203 | perf_session__delete_threads(self); | |
204 | machine__exit(&self->host_machine); | |
94c744b6 ACM |
205 | close(self->fd); |
206 | free(self); | |
207 | } | |
a328626b | 208 | |
720a3aeb ACM |
209 | void perf_session__remove_thread(struct perf_session *self, struct thread *th) |
210 | { | |
70597f21 | 211 | self->last_match = NULL; |
720a3aeb ACM |
212 | rb_erase(&th->rb_node, &self->threads); |
213 | /* | |
214 | * We may have references to this thread, for instance in some hist_entry | |
215 | * instances, so just move them to a separate list. | |
216 | */ | |
217 | list_add_tail(&th->node, &self->dead_threads); | |
218 | } | |
219 | ||
a328626b ACM |
220 | static bool symbol__match_parent_regex(struct symbol *sym) |
221 | { | |
222 | if (sym->name && !regexec(&parent_regex, sym->name, 0, NULL, 0)) | |
223 | return 1; | |
224 | ||
225 | return 0; | |
226 | } | |
227 | ||
1b3a0e95 FW |
228 | int perf_session__resolve_callchain(struct perf_session *self, |
229 | struct thread *thread, | |
230 | struct ip_callchain *chain, | |
231 | struct symbol **parent) | |
a328626b ACM |
232 | { |
233 | u8 cpumode = PERF_RECORD_MISC_USER; | |
a328626b | 234 | unsigned int i; |
1b3a0e95 | 235 | int err; |
a328626b | 236 | |
1b3a0e95 | 237 | callchain_cursor_reset(&self->callchain_cursor); |
a328626b ACM |
238 | |
239 | for (i = 0; i < chain->nr; i++) { | |
240 | u64 ip = chain->ips[i]; | |
241 | struct addr_location al; | |
242 | ||
243 | if (ip >= PERF_CONTEXT_MAX) { | |
244 | switch (ip) { | |
245 | case PERF_CONTEXT_HV: | |
246 | cpumode = PERF_RECORD_MISC_HYPERVISOR; break; | |
247 | case PERF_CONTEXT_KERNEL: | |
248 | cpumode = PERF_RECORD_MISC_KERNEL; break; | |
249 | case PERF_CONTEXT_USER: | |
250 | cpumode = PERF_RECORD_MISC_USER; break; | |
251 | default: | |
252 | break; | |
253 | } | |
254 | continue; | |
255 | } | |
256 | ||
a1645ce1 | 257 | al.filtered = false; |
a328626b | 258 | thread__find_addr_location(thread, self, cpumode, |
a1645ce1 | 259 | MAP__FUNCTION, thread->pid, ip, &al, NULL); |
a328626b ACM |
260 | if (al.sym != NULL) { |
261 | if (sort__has_parent && !*parent && | |
262 | symbol__match_parent_regex(al.sym)) | |
263 | *parent = al.sym; | |
d599db3f | 264 | if (!symbol_conf.use_callchain) |
a328626b | 265 | break; |
a328626b | 266 | } |
1b3a0e95 FW |
267 | |
268 | err = callchain_cursor_append(&self->callchain_cursor, | |
269 | ip, al.map, al.sym); | |
270 | if (err) | |
271 | return err; | |
a328626b ACM |
272 | } |
273 | ||
1b3a0e95 | 274 | return 0; |
a328626b | 275 | } |
06aae590 | 276 | |
8115d60c | 277 | static int process_event_synth_stub(union perf_event *event __used, |
640c03ce ACM |
278 | struct perf_session *session __used) |
279 | { | |
280 | dump_printf(": unhandled!\n"); | |
281 | return 0; | |
282 | } | |
283 | ||
9e69c210 ACM |
284 | static int process_event_sample_stub(union perf_event *event __used, |
285 | struct perf_sample *sample __used, | |
286 | struct perf_evsel *evsel __used, | |
287 | struct perf_session *session __used) | |
288 | { | |
289 | dump_printf(": unhandled!\n"); | |
290 | return 0; | |
291 | } | |
292 | ||
8115d60c | 293 | static int process_event_stub(union perf_event *event __used, |
8d50e5b4 | 294 | struct perf_sample *sample __used, |
06aae590 ACM |
295 | struct perf_session *session __used) |
296 | { | |
297 | dump_printf(": unhandled!\n"); | |
298 | return 0; | |
299 | } | |
300 | ||
8115d60c | 301 | static int process_finished_round_stub(union perf_event *event __used, |
d6b17beb FW |
302 | struct perf_session *session __used, |
303 | struct perf_event_ops *ops __used) | |
304 | { | |
305 | dump_printf(": unhandled!\n"); | |
306 | return 0; | |
307 | } | |
308 | ||
8115d60c | 309 | static int process_finished_round(union perf_event *event, |
d6b17beb FW |
310 | struct perf_session *session, |
311 | struct perf_event_ops *ops); | |
312 | ||
06aae590 ACM |
313 | static void perf_event_ops__fill_defaults(struct perf_event_ops *handler) |
314 | { | |
55aa640f | 315 | if (handler->sample == NULL) |
9e69c210 | 316 | handler->sample = process_event_sample_stub; |
55aa640f ACM |
317 | if (handler->mmap == NULL) |
318 | handler->mmap = process_event_stub; | |
319 | if (handler->comm == NULL) | |
320 | handler->comm = process_event_stub; | |
321 | if (handler->fork == NULL) | |
322 | handler->fork = process_event_stub; | |
323 | if (handler->exit == NULL) | |
324 | handler->exit = process_event_stub; | |
325 | if (handler->lost == NULL) | |
8115d60c | 326 | handler->lost = perf_event__process_lost; |
55aa640f ACM |
327 | if (handler->read == NULL) |
328 | handler->read = process_event_stub; | |
329 | if (handler->throttle == NULL) | |
330 | handler->throttle = process_event_stub; | |
331 | if (handler->unthrottle == NULL) | |
332 | handler->unthrottle = process_event_stub; | |
2c46dbb5 | 333 | if (handler->attr == NULL) |
640c03ce | 334 | handler->attr = process_event_synth_stub; |
cd19a035 | 335 | if (handler->event_type == NULL) |
640c03ce | 336 | handler->event_type = process_event_synth_stub; |
9215545e | 337 | if (handler->tracing_data == NULL) |
640c03ce | 338 | handler->tracing_data = process_event_synth_stub; |
c7929e47 | 339 | if (handler->build_id == NULL) |
640c03ce | 340 | handler->build_id = process_event_synth_stub; |
d6b17beb FW |
341 | if (handler->finished_round == NULL) { |
342 | if (handler->ordered_samples) | |
343 | handler->finished_round = process_finished_round; | |
344 | else | |
345 | handler->finished_round = process_finished_round_stub; | |
346 | } | |
06aae590 ACM |
347 | } |
348 | ||
ba21594c ACM |
349 | void mem_bswap_64(void *src, int byte_size) |
350 | { | |
351 | u64 *m = src; | |
352 | ||
353 | while (byte_size > 0) { | |
354 | *m = bswap_64(*m); | |
355 | byte_size -= sizeof(u64); | |
356 | ++m; | |
357 | } | |
358 | } | |
359 | ||
8115d60c | 360 | static void perf_event__all64_swap(union perf_event *event) |
ba21594c | 361 | { |
8115d60c ACM |
362 | struct perf_event_header *hdr = &event->header; |
363 | mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr)); | |
ba21594c ACM |
364 | } |
365 | ||
8115d60c | 366 | static void perf_event__comm_swap(union perf_event *event) |
ba21594c | 367 | { |
8115d60c ACM |
368 | event->comm.pid = bswap_32(event->comm.pid); |
369 | event->comm.tid = bswap_32(event->comm.tid); | |
ba21594c ACM |
370 | } |
371 | ||
8115d60c | 372 | static void perf_event__mmap_swap(union perf_event *event) |
ba21594c | 373 | { |
8115d60c ACM |
374 | event->mmap.pid = bswap_32(event->mmap.pid); |
375 | event->mmap.tid = bswap_32(event->mmap.tid); | |
376 | event->mmap.start = bswap_64(event->mmap.start); | |
377 | event->mmap.len = bswap_64(event->mmap.len); | |
378 | event->mmap.pgoff = bswap_64(event->mmap.pgoff); | |
ba21594c ACM |
379 | } |
380 | ||
8115d60c | 381 | static void perf_event__task_swap(union perf_event *event) |
ba21594c | 382 | { |
8115d60c ACM |
383 | event->fork.pid = bswap_32(event->fork.pid); |
384 | event->fork.tid = bswap_32(event->fork.tid); | |
385 | event->fork.ppid = bswap_32(event->fork.ppid); | |
386 | event->fork.ptid = bswap_32(event->fork.ptid); | |
387 | event->fork.time = bswap_64(event->fork.time); | |
ba21594c ACM |
388 | } |
389 | ||
8115d60c | 390 | static void perf_event__read_swap(union perf_event *event) |
ba21594c | 391 | { |
8115d60c ACM |
392 | event->read.pid = bswap_32(event->read.pid); |
393 | event->read.tid = bswap_32(event->read.tid); | |
394 | event->read.value = bswap_64(event->read.value); | |
395 | event->read.time_enabled = bswap_64(event->read.time_enabled); | |
396 | event->read.time_running = bswap_64(event->read.time_running); | |
397 | event->read.id = bswap_64(event->read.id); | |
ba21594c ACM |
398 | } |
399 | ||
8115d60c | 400 | static void perf_event__attr_swap(union perf_event *event) |
2c46dbb5 TZ |
401 | { |
402 | size_t size; | |
403 | ||
8115d60c ACM |
404 | event->attr.attr.type = bswap_32(event->attr.attr.type); |
405 | event->attr.attr.size = bswap_32(event->attr.attr.size); | |
406 | event->attr.attr.config = bswap_64(event->attr.attr.config); | |
407 | event->attr.attr.sample_period = bswap_64(event->attr.attr.sample_period); | |
408 | event->attr.attr.sample_type = bswap_64(event->attr.attr.sample_type); | |
409 | event->attr.attr.read_format = bswap_64(event->attr.attr.read_format); | |
410 | event->attr.attr.wakeup_events = bswap_32(event->attr.attr.wakeup_events); | |
411 | event->attr.attr.bp_type = bswap_32(event->attr.attr.bp_type); | |
412 | event->attr.attr.bp_addr = bswap_64(event->attr.attr.bp_addr); | |
413 | event->attr.attr.bp_len = bswap_64(event->attr.attr.bp_len); | |
2c46dbb5 | 414 | |
8115d60c ACM |
415 | size = event->header.size; |
416 | size -= (void *)&event->attr.id - (void *)event; | |
417 | mem_bswap_64(event->attr.id, size); | |
2c46dbb5 TZ |
418 | } |
419 | ||
8115d60c | 420 | static void perf_event__event_type_swap(union perf_event *event) |
cd19a035 | 421 | { |
8115d60c ACM |
422 | event->event_type.event_type.event_id = |
423 | bswap_64(event->event_type.event_type.event_id); | |
cd19a035 TZ |
424 | } |
425 | ||
8115d60c | 426 | static void perf_event__tracing_data_swap(union perf_event *event) |
9215545e | 427 | { |
8115d60c | 428 | event->tracing_data.size = bswap_32(event->tracing_data.size); |
9215545e TZ |
429 | } |
430 | ||
8115d60c | 431 | typedef void (*perf_event__swap_op)(union perf_event *event); |
ba21594c | 432 | |
8115d60c ACM |
433 | static perf_event__swap_op perf_event__swap_ops[] = { |
434 | [PERF_RECORD_MMAP] = perf_event__mmap_swap, | |
435 | [PERF_RECORD_COMM] = perf_event__comm_swap, | |
436 | [PERF_RECORD_FORK] = perf_event__task_swap, | |
437 | [PERF_RECORD_EXIT] = perf_event__task_swap, | |
438 | [PERF_RECORD_LOST] = perf_event__all64_swap, | |
439 | [PERF_RECORD_READ] = perf_event__read_swap, | |
440 | [PERF_RECORD_SAMPLE] = perf_event__all64_swap, | |
441 | [PERF_RECORD_HEADER_ATTR] = perf_event__attr_swap, | |
442 | [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap, | |
443 | [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap, | |
444 | [PERF_RECORD_HEADER_BUILD_ID] = NULL, | |
445 | [PERF_RECORD_HEADER_MAX] = NULL, | |
ba21594c ACM |
446 | }; |
447 | ||
c61e52ee FW |
448 | struct sample_queue { |
449 | u64 timestamp; | |
e4c2df13 | 450 | u64 file_offset; |
8115d60c | 451 | union perf_event *event; |
c61e52ee FW |
452 | struct list_head list; |
453 | }; | |
454 | ||
020bb75a TG |
455 | static void perf_session_free_sample_buffers(struct perf_session *session) |
456 | { | |
457 | struct ordered_samples *os = &session->ordered_samples; | |
458 | ||
5c891f38 | 459 | while (!list_empty(&os->to_free)) { |
020bb75a TG |
460 | struct sample_queue *sq; |
461 | ||
5c891f38 | 462 | sq = list_entry(os->to_free.next, struct sample_queue, list); |
020bb75a TG |
463 | list_del(&sq->list); |
464 | free(sq); | |
465 | } | |
466 | } | |
467 | ||
cbf41645 | 468 | static int perf_session_deliver_event(struct perf_session *session, |
8115d60c | 469 | union perf_event *event, |
8d50e5b4 | 470 | struct perf_sample *sample, |
f74725dc TG |
471 | struct perf_event_ops *ops, |
472 | u64 file_offset); | |
cbf41645 | 473 | |
c61e52ee FW |
474 | static void flush_sample_queue(struct perf_session *s, |
475 | struct perf_event_ops *ops) | |
476 | { | |
a1225dec TG |
477 | struct ordered_samples *os = &s->ordered_samples; |
478 | struct list_head *head = &os->samples; | |
c61e52ee | 479 | struct sample_queue *tmp, *iter; |
8d50e5b4 | 480 | struct perf_sample sample; |
a1225dec TG |
481 | u64 limit = os->next_flush; |
482 | u64 last_ts = os->last_sample ? os->last_sample->timestamp : 0ULL; | |
5538beca | 483 | int ret; |
c61e52ee | 484 | |
d6b17beb | 485 | if (!ops->ordered_samples || !limit) |
c61e52ee FW |
486 | return; |
487 | ||
488 | list_for_each_entry_safe(iter, tmp, head, list) { | |
489 | if (iter->timestamp > limit) | |
a1225dec | 490 | break; |
c61e52ee | 491 | |
5538beca FW |
492 | ret = perf_session__parse_sample(s, iter->event, &sample); |
493 | if (ret) | |
494 | pr_err("Can't parse sample, err = %d\n", ret); | |
495 | else | |
496 | perf_session_deliver_event(s, iter->event, &sample, ops, | |
497 | iter->file_offset); | |
c61e52ee | 498 | |
a1225dec | 499 | os->last_flush = iter->timestamp; |
c61e52ee | 500 | list_del(&iter->list); |
020bb75a | 501 | list_add(&iter->list, &os->sample_cache); |
c61e52ee | 502 | } |
a1225dec TG |
503 | |
504 | if (list_empty(head)) { | |
505 | os->last_sample = NULL; | |
506 | } else if (last_ts <= limit) { | |
507 | os->last_sample = | |
508 | list_entry(head->prev, struct sample_queue, list); | |
509 | } | |
c61e52ee FW |
510 | } |
511 | ||
d6b17beb FW |
512 | /* |
513 | * When perf record finishes a pass on every buffers, it records this pseudo | |
514 | * event. | |
515 | * We record the max timestamp t found in the pass n. | |
516 | * Assuming these timestamps are monotonic across cpus, we know that if | |
517 | * a buffer still has events with timestamps below t, they will be all | |
518 | * available and then read in the pass n + 1. | |
519 | * Hence when we start to read the pass n + 2, we can safely flush every | |
520 | * events with timestamps below t. | |
521 | * | |
522 | * ============ PASS n ================= | |
523 | * CPU 0 | CPU 1 | |
524 | * | | |
525 | * cnt1 timestamps | cnt2 timestamps | |
526 | * 1 | 2 | |
527 | * 2 | 3 | |
528 | * - | 4 <--- max recorded | |
529 | * | |
530 | * ============ PASS n + 1 ============== | |
531 | * CPU 0 | CPU 1 | |
532 | * | | |
533 | * cnt1 timestamps | cnt2 timestamps | |
534 | * 3 | 5 | |
535 | * 4 | 6 | |
536 | * 5 | 7 <---- max recorded | |
537 | * | |
538 | * Flush every events below timestamp 4 | |
539 | * | |
540 | * ============ PASS n + 2 ============== | |
541 | * CPU 0 | CPU 1 | |
542 | * | | |
543 | * cnt1 timestamps | cnt2 timestamps | |
544 | * 6 | 8 | |
545 | * 7 | 9 | |
546 | * - | 10 | |
547 | * | |
548 | * Flush every events below timestamp 7 | |
549 | * etc... | |
550 | */ | |
8115d60c | 551 | static int process_finished_round(union perf_event *event __used, |
d6b17beb FW |
552 | struct perf_session *session, |
553 | struct perf_event_ops *ops) | |
554 | { | |
555 | flush_sample_queue(session, ops); | |
556 | session->ordered_samples.next_flush = session->ordered_samples.max_timestamp; | |
557 | ||
558 | return 0; | |
559 | } | |
560 | ||
c61e52ee | 561 | /* The queue is ordered by time */ |
cbf41645 | 562 | static void __queue_event(struct sample_queue *new, struct perf_session *s) |
c61e52ee | 563 | { |
a1225dec TG |
564 | struct ordered_samples *os = &s->ordered_samples; |
565 | struct sample_queue *sample = os->last_sample; | |
566 | u64 timestamp = new->timestamp; | |
567 | struct list_head *p; | |
c61e52ee | 568 | |
a1225dec | 569 | os->last_sample = new; |
c61e52ee | 570 | |
a1225dec TG |
571 | if (!sample) { |
572 | list_add(&new->list, &os->samples); | |
573 | os->max_timestamp = timestamp; | |
c61e52ee FW |
574 | return; |
575 | } | |
576 | ||
577 | /* | |
a1225dec TG |
578 | * last_sample might point to some random place in the list as it's |
579 | * the last queued event. We expect that the new event is close to | |
580 | * this. | |
c61e52ee | 581 | */ |
a1225dec TG |
582 | if (sample->timestamp <= timestamp) { |
583 | while (sample->timestamp <= timestamp) { | |
584 | p = sample->list.next; | |
585 | if (p == &os->samples) { | |
586 | list_add_tail(&new->list, &os->samples); | |
587 | os->max_timestamp = timestamp; | |
588 | return; | |
589 | } | |
590 | sample = list_entry(p, struct sample_queue, list); | |
591 | } | |
592 | list_add_tail(&new->list, &sample->list); | |
593 | } else { | |
594 | while (sample->timestamp > timestamp) { | |
595 | p = sample->list.prev; | |
596 | if (p == &os->samples) { | |
597 | list_add(&new->list, &os->samples); | |
598 | return; | |
599 | } | |
600 | sample = list_entry(p, struct sample_queue, list); | |
601 | } | |
602 | list_add(&new->list, &sample->list); | |
603 | } | |
c61e52ee FW |
604 | } |
605 | ||
5c891f38 TG |
606 | #define MAX_SAMPLE_BUFFER (64 * 1024 / sizeof(struct sample_queue)) |
607 | ||
8115d60c | 608 | static int perf_session_queue_event(struct perf_session *s, union perf_event *event, |
8d50e5b4 | 609 | struct perf_sample *sample, u64 file_offset) |
c61e52ee | 610 | { |
5c891f38 TG |
611 | struct ordered_samples *os = &s->ordered_samples; |
612 | struct list_head *sc = &os->sample_cache; | |
8d50e5b4 | 613 | u64 timestamp = sample->time; |
c61e52ee | 614 | struct sample_queue *new; |
c61e52ee | 615 | |
79a14c1f | 616 | if (!timestamp || timestamp == ~0ULL) |
cbf41645 TG |
617 | return -ETIME; |
618 | ||
c61e52ee FW |
619 | if (timestamp < s->ordered_samples.last_flush) { |
620 | printf("Warning: Timestamp below last timeslice flush\n"); | |
621 | return -EINVAL; | |
622 | } | |
623 | ||
020bb75a TG |
624 | if (!list_empty(sc)) { |
625 | new = list_entry(sc->next, struct sample_queue, list); | |
626 | list_del(&new->list); | |
5c891f38 TG |
627 | } else if (os->sample_buffer) { |
628 | new = os->sample_buffer + os->sample_buffer_idx; | |
629 | if (++os->sample_buffer_idx == MAX_SAMPLE_BUFFER) | |
630 | os->sample_buffer = NULL; | |
020bb75a | 631 | } else { |
5c891f38 TG |
632 | os->sample_buffer = malloc(MAX_SAMPLE_BUFFER * sizeof(*new)); |
633 | if (!os->sample_buffer) | |
020bb75a | 634 | return -ENOMEM; |
5c891f38 TG |
635 | list_add(&os->sample_buffer->list, &os->to_free); |
636 | os->sample_buffer_idx = 2; | |
637 | new = os->sample_buffer + 1; | |
020bb75a | 638 | } |
c61e52ee FW |
639 | |
640 | new->timestamp = timestamp; | |
e4c2df13 | 641 | new->file_offset = file_offset; |
fe174207 | 642 | new->event = event; |
c61e52ee | 643 | |
cbf41645 | 644 | __queue_event(new, s); |
640c03ce | 645 | |
640c03ce ACM |
646 | return 0; |
647 | } | |
c61e52ee | 648 | |
8d50e5b4 | 649 | static void callchain__printf(struct perf_sample *sample) |
640c03ce ACM |
650 | { |
651 | unsigned int i; | |
c61e52ee | 652 | |
9486aa38 | 653 | printf("... chain: nr:%" PRIu64 "\n", sample->callchain->nr); |
640c03ce ACM |
654 | |
655 | for (i = 0; i < sample->callchain->nr; i++) | |
9486aa38 ACM |
656 | printf("..... %2d: %016" PRIx64 "\n", |
657 | i, sample->callchain->ips[i]); | |
c61e52ee FW |
658 | } |
659 | ||
9c90a61c | 660 | static void perf_session__print_tstamp(struct perf_session *session, |
8115d60c | 661 | union perf_event *event, |
8d50e5b4 | 662 | struct perf_sample *sample) |
9c90a61c ACM |
663 | { |
664 | if (event->header.type != PERF_RECORD_SAMPLE && | |
665 | !session->sample_id_all) { | |
666 | fputs("-1 -1 ", stdout); | |
667 | return; | |
668 | } | |
669 | ||
670 | if ((session->sample_type & PERF_SAMPLE_CPU)) | |
671 | printf("%u ", sample->cpu); | |
672 | ||
673 | if (session->sample_type & PERF_SAMPLE_TIME) | |
9486aa38 | 674 | printf("%" PRIu64 " ", sample->time); |
9c90a61c ACM |
675 | } |
676 | ||
8115d60c | 677 | static void dump_event(struct perf_session *session, union perf_event *event, |
8d50e5b4 | 678 | u64 file_offset, struct perf_sample *sample) |
9aefcab0 TG |
679 | { |
680 | if (!dump_trace) | |
681 | return; | |
682 | ||
9486aa38 ACM |
683 | printf("\n%#" PRIx64 " [%#x]: event: %d\n", |
684 | file_offset, event->header.size, event->header.type); | |
9aefcab0 TG |
685 | |
686 | trace_event(event); | |
687 | ||
688 | if (sample) | |
689 | perf_session__print_tstamp(session, event, sample); | |
690 | ||
9486aa38 | 691 | printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset, |
8115d60c | 692 | event->header.size, perf_event__name(event->header.type)); |
9aefcab0 TG |
693 | } |
694 | ||
8115d60c | 695 | static void dump_sample(struct perf_session *session, union perf_event *event, |
8d50e5b4 | 696 | struct perf_sample *sample) |
9aefcab0 | 697 | { |
ddbc24b7 ACM |
698 | if (!dump_trace) |
699 | return; | |
700 | ||
9486aa38 ACM |
701 | printf("(IP, %d): %d/%d: %#" PRIx64 " period: %" PRIu64 "\n", |
702 | event->header.misc, sample->pid, sample->tid, sample->ip, | |
703 | sample->period); | |
9aefcab0 TG |
704 | |
705 | if (session->sample_type & PERF_SAMPLE_CALLCHAIN) | |
ddbc24b7 | 706 | callchain__printf(sample); |
9aefcab0 TG |
707 | } |
708 | ||
cbf41645 | 709 | static int perf_session_deliver_event(struct perf_session *session, |
8115d60c | 710 | union perf_event *event, |
8d50e5b4 | 711 | struct perf_sample *sample, |
f74725dc | 712 | struct perf_event_ops *ops, |
532e7269 | 713 | u64 file_offset) |
cbf41645 | 714 | { |
9e69c210 ACM |
715 | struct perf_evsel *evsel; |
716 | ||
532e7269 TG |
717 | dump_event(session, event, file_offset, sample); |
718 | ||
cbf41645 TG |
719 | switch (event->header.type) { |
720 | case PERF_RECORD_SAMPLE: | |
532e7269 | 721 | dump_sample(session, event, sample); |
9e69c210 ACM |
722 | evsel = perf_evlist__id2evsel(session->evlist, sample->id); |
723 | if (evsel == NULL) { | |
724 | ++session->hists.stats.nr_unknown_id; | |
725 | return -1; | |
726 | } | |
727 | return ops->sample(event, sample, evsel, session); | |
cbf41645 TG |
728 | case PERF_RECORD_MMAP: |
729 | return ops->mmap(event, sample, session); | |
730 | case PERF_RECORD_COMM: | |
731 | return ops->comm(event, sample, session); | |
732 | case PERF_RECORD_FORK: | |
733 | return ops->fork(event, sample, session); | |
734 | case PERF_RECORD_EXIT: | |
735 | return ops->exit(event, sample, session); | |
736 | case PERF_RECORD_LOST: | |
737 | return ops->lost(event, sample, session); | |
738 | case PERF_RECORD_READ: | |
739 | return ops->read(event, sample, session); | |
740 | case PERF_RECORD_THROTTLE: | |
741 | return ops->throttle(event, sample, session); | |
742 | case PERF_RECORD_UNTHROTTLE: | |
743 | return ops->unthrottle(event, sample, session); | |
744 | default: | |
745 | ++session->hists.stats.nr_unknown_events; | |
746 | return -1; | |
747 | } | |
748 | } | |
749 | ||
3dfc2c0a | 750 | static int perf_session__preprocess_sample(struct perf_session *session, |
8115d60c | 751 | union perf_event *event, struct perf_sample *sample) |
3dfc2c0a TG |
752 | { |
753 | if (event->header.type != PERF_RECORD_SAMPLE || | |
754 | !(session->sample_type & PERF_SAMPLE_CALLCHAIN)) | |
755 | return 0; | |
756 | ||
757 | if (!ip_callchain__valid(sample->callchain, event)) { | |
758 | pr_debug("call-chain problem with event, skipping it.\n"); | |
759 | ++session->hists.stats.nr_invalid_chains; | |
760 | session->hists.stats.total_invalid_chains += sample->period; | |
761 | return -EINVAL; | |
762 | } | |
763 | return 0; | |
764 | } | |
765 | ||
8115d60c | 766 | static int perf_session__process_user_event(struct perf_session *session, union perf_event *event, |
ba74f064 | 767 | struct perf_event_ops *ops, u64 file_offset) |
06aae590 | 768 | { |
ba74f064 | 769 | dump_event(session, event, file_offset, NULL); |
06aae590 | 770 | |
cbf41645 | 771 | /* These events are processed right away */ |
06aae590 | 772 | switch (event->header.type) { |
2c46dbb5 | 773 | case PERF_RECORD_HEADER_ATTR: |
cbf41645 | 774 | return ops->attr(event, session); |
cd19a035 | 775 | case PERF_RECORD_HEADER_EVENT_TYPE: |
cbf41645 | 776 | return ops->event_type(event, session); |
9215545e TZ |
777 | case PERF_RECORD_HEADER_TRACING_DATA: |
778 | /* setup for reading amidst mmap */ | |
cbf41645 TG |
779 | lseek(session->fd, file_offset, SEEK_SET); |
780 | return ops->tracing_data(event, session); | |
c7929e47 | 781 | case PERF_RECORD_HEADER_BUILD_ID: |
cbf41645 | 782 | return ops->build_id(event, session); |
d6b17beb | 783 | case PERF_RECORD_FINISHED_ROUND: |
cbf41645 | 784 | return ops->finished_round(event, session, ops); |
06aae590 | 785 | default: |
ba74f064 | 786 | return -EINVAL; |
06aae590 | 787 | } |
ba74f064 TG |
788 | } |
789 | ||
790 | static int perf_session__process_event(struct perf_session *session, | |
8115d60c | 791 | union perf_event *event, |
ba74f064 TG |
792 | struct perf_event_ops *ops, |
793 | u64 file_offset) | |
794 | { | |
8d50e5b4 | 795 | struct perf_sample sample; |
ba74f064 TG |
796 | int ret; |
797 | ||
8115d60c ACM |
798 | if (session->header.needs_swap && |
799 | perf_event__swap_ops[event->header.type]) | |
800 | perf_event__swap_ops[event->header.type](event); | |
ba74f064 TG |
801 | |
802 | if (event->header.type >= PERF_RECORD_HEADER_MAX) | |
803 | return -EINVAL; | |
804 | ||
805 | hists__inc_nr_events(&session->hists, event->header.type); | |
806 | ||
807 | if (event->header.type >= PERF_RECORD_USER_TYPE_START) | |
808 | return perf_session__process_user_event(session, event, ops, file_offset); | |
cbf41645 | 809 | |
3dfc2c0a TG |
810 | /* |
811 | * For all kernel events we get the sample data | |
812 | */ | |
5538beca FW |
813 | ret = perf_session__parse_sample(session, event, &sample); |
814 | if (ret) | |
815 | return ret; | |
3dfc2c0a TG |
816 | |
817 | /* Preprocess sample records - precheck callchains */ | |
818 | if (perf_session__preprocess_sample(session, event, &sample)) | |
819 | return 0; | |
820 | ||
cbf41645 | 821 | if (ops->ordered_samples) { |
e4c2df13 TG |
822 | ret = perf_session_queue_event(session, event, &sample, |
823 | file_offset); | |
cbf41645 TG |
824 | if (ret != -ETIME) |
825 | return ret; | |
826 | } | |
827 | ||
f74725dc TG |
828 | return perf_session_deliver_event(session, event, &sample, ops, |
829 | file_offset); | |
06aae590 ACM |
830 | } |
831 | ||
ba21594c ACM |
832 | void perf_event_header__bswap(struct perf_event_header *self) |
833 | { | |
834 | self->type = bswap_32(self->type); | |
835 | self->misc = bswap_16(self->misc); | |
836 | self->size = bswap_16(self->size); | |
837 | } | |
838 | ||
06aae590 ACM |
839 | static struct thread *perf_session__register_idle_thread(struct perf_session *self) |
840 | { | |
841 | struct thread *thread = perf_session__findnew(self, 0); | |
842 | ||
843 | if (thread == NULL || thread__set_comm(thread, "swapper")) { | |
844 | pr_err("problem inserting idle task.\n"); | |
845 | thread = NULL; | |
846 | } | |
847 | ||
848 | return thread; | |
849 | } | |
850 | ||
11095994 ACM |
851 | static void perf_session__warn_about_errors(const struct perf_session *session, |
852 | const struct perf_event_ops *ops) | |
853 | { | |
8115d60c | 854 | if (ops->lost == perf_event__process_lost && |
11095994 | 855 | session->hists.stats.total_lost != 0) { |
9486aa38 ACM |
856 | ui__warning("Processed %" PRIu64 " events and LOST %" PRIu64 |
857 | "!\n\nCheck IO/CPU overload!\n\n", | |
11095994 ACM |
858 | session->hists.stats.total_period, |
859 | session->hists.stats.total_lost); | |
860 | } | |
861 | ||
862 | if (session->hists.stats.nr_unknown_events != 0) { | |
863 | ui__warning("Found %u unknown events!\n\n" | |
864 | "Is this an older tool processing a perf.data " | |
865 | "file generated by a more recent tool?\n\n" | |
866 | "If that is not the case, consider " | |
867 | "reporting to linux-kernel@vger.kernel.org.\n\n", | |
868 | session->hists.stats.nr_unknown_events); | |
869 | } | |
870 | ||
9e69c210 ACM |
871 | if (session->hists.stats.nr_unknown_id != 0) { |
872 | ui__warning("%u samples with id not present in the header\n", | |
873 | session->hists.stats.nr_unknown_id); | |
874 | } | |
875 | ||
11095994 ACM |
876 | if (session->hists.stats.nr_invalid_chains != 0) { |
877 | ui__warning("Found invalid callchains!\n\n" | |
878 | "%u out of %u events were discarded for this reason.\n\n" | |
879 | "Consider reporting to linux-kernel@vger.kernel.org.\n\n", | |
880 | session->hists.stats.nr_invalid_chains, | |
881 | session->hists.stats.nr_events[PERF_RECORD_SAMPLE]); | |
882 | } | |
883 | } | |
884 | ||
8dc58101 TZ |
885 | #define session_done() (*(volatile int *)(&session_done)) |
886 | volatile int session_done; | |
887 | ||
888 | static int __perf_session__process_pipe_events(struct perf_session *self, | |
889 | struct perf_event_ops *ops) | |
890 | { | |
8115d60c | 891 | union perf_event event; |
8dc58101 TZ |
892 | uint32_t size; |
893 | int skip = 0; | |
894 | u64 head; | |
895 | int err; | |
896 | void *p; | |
897 | ||
898 | perf_event_ops__fill_defaults(ops); | |
899 | ||
900 | head = 0; | |
901 | more: | |
1e7972cc | 902 | err = readn(self->fd, &event, sizeof(struct perf_event_header)); |
8dc58101 TZ |
903 | if (err <= 0) { |
904 | if (err == 0) | |
905 | goto done; | |
906 | ||
907 | pr_err("failed to read event header\n"); | |
908 | goto out_err; | |
909 | } | |
910 | ||
911 | if (self->header.needs_swap) | |
912 | perf_event_header__bswap(&event.header); | |
913 | ||
914 | size = event.header.size; | |
915 | if (size == 0) | |
916 | size = 8; | |
917 | ||
918 | p = &event; | |
919 | p += sizeof(struct perf_event_header); | |
920 | ||
794e43b5 | 921 | if (size - sizeof(struct perf_event_header)) { |
1e7972cc | 922 | err = readn(self->fd, p, size - sizeof(struct perf_event_header)); |
794e43b5 TZ |
923 | if (err <= 0) { |
924 | if (err == 0) { | |
925 | pr_err("unexpected end of event stream\n"); | |
926 | goto done; | |
927 | } | |
8dc58101 | 928 | |
794e43b5 TZ |
929 | pr_err("failed to read event data\n"); |
930 | goto out_err; | |
931 | } | |
8dc58101 TZ |
932 | } |
933 | ||
934 | if (size == 0 || | |
0331ee0c | 935 | (skip = perf_session__process_event(self, &event, ops, head)) < 0) { |
9486aa38 | 936 | dump_printf("%#" PRIx64 " [%#x]: skipping unknown header type: %d\n", |
8dc58101 TZ |
937 | head, event.header.size, event.header.type); |
938 | /* | |
939 | * assume we lost track of the stream, check alignment, and | |
940 | * increment a single u64 in the hope to catch on again 'soon'. | |
941 | */ | |
942 | if (unlikely(head & 7)) | |
943 | head &= ~7ULL; | |
944 | ||
945 | size = 8; | |
946 | } | |
947 | ||
948 | head += size; | |
949 | ||
8dc58101 TZ |
950 | if (skip > 0) |
951 | head += skip; | |
952 | ||
953 | if (!session_done()) | |
954 | goto more; | |
955 | done: | |
956 | err = 0; | |
957 | out_err: | |
11095994 | 958 | perf_session__warn_about_errors(self, ops); |
020bb75a | 959 | perf_session_free_sample_buffers(self); |
8dc58101 TZ |
960 | return err; |
961 | } | |
962 | ||
0331ee0c | 963 | int __perf_session__process_events(struct perf_session *session, |
6122e4e4 ACM |
964 | u64 data_offset, u64 data_size, |
965 | u64 file_size, struct perf_event_ops *ops) | |
06aae590 | 966 | { |
55b44629 | 967 | u64 head, page_offset, file_offset, file_pos, progress_next; |
fe174207 | 968 | int err, mmap_prot, mmap_flags, map_idx = 0; |
0331ee0c | 969 | struct ui_progress *progress; |
55b44629 | 970 | size_t page_size, mmap_size; |
fe174207 | 971 | char *buf, *mmaps[8]; |
8115d60c | 972 | union perf_event *event; |
06aae590 | 973 | uint32_t size; |
0331ee0c | 974 | |
06aae590 ACM |
975 | perf_event_ops__fill_defaults(ops); |
976 | ||
1b75962e | 977 | page_size = sysconf(_SC_PAGESIZE); |
06aae590 | 978 | |
0331ee0c TG |
979 | page_offset = page_size * (data_offset / page_size); |
980 | file_offset = page_offset; | |
981 | head = data_offset - page_offset; | |
06aae590 | 982 | |
d6513281 TG |
983 | if (data_offset + data_size < file_size) |
984 | file_size = data_offset + data_size; | |
985 | ||
55b44629 TG |
986 | progress_next = file_size / 16; |
987 | progress = ui_progress__new("Processing events...", file_size); | |
988 | if (progress == NULL) | |
989 | return -1; | |
990 | ||
991 | mmap_size = session->mmap_window; | |
992 | if (mmap_size > file_size) | |
993 | mmap_size = file_size; | |
994 | ||
fe174207 TG |
995 | memset(mmaps, 0, sizeof(mmaps)); |
996 | ||
ba21594c ACM |
997 | mmap_prot = PROT_READ; |
998 | mmap_flags = MAP_SHARED; | |
999 | ||
0331ee0c | 1000 | if (session->header.needs_swap) { |
ba21594c ACM |
1001 | mmap_prot |= PROT_WRITE; |
1002 | mmap_flags = MAP_PRIVATE; | |
1003 | } | |
06aae590 | 1004 | remap: |
55b44629 TG |
1005 | buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, session->fd, |
1006 | file_offset); | |
06aae590 ACM |
1007 | if (buf == MAP_FAILED) { |
1008 | pr_err("failed to mmap file\n"); | |
1009 | err = -errno; | |
1010 | goto out_err; | |
1011 | } | |
fe174207 TG |
1012 | mmaps[map_idx] = buf; |
1013 | map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1); | |
d6513281 | 1014 | file_pos = file_offset + head; |
06aae590 ACM |
1015 | |
1016 | more: | |
eac9eace FW |
1017 | /* |
1018 | * Ensure we have enough space remaining to read | |
1019 | * the size of the event in the headers. | |
1020 | */ | |
1021 | if (head + sizeof(event->header) > mmap_size) | |
1022 | goto remap; | |
1023 | ||
8115d60c | 1024 | event = (union perf_event *)(buf + head); |
06aae590 | 1025 | |
0331ee0c | 1026 | if (session->header.needs_swap) |
ba21594c | 1027 | perf_event_header__bswap(&event->header); |
06aae590 | 1028 | |
3d03e2ea | 1029 | if (head + event->header.size > mmap_size) { |
fe174207 TG |
1030 | if (mmaps[map_idx]) { |
1031 | munmap(mmaps[map_idx], mmap_size); | |
1032 | mmaps[map_idx] = NULL; | |
1033 | } | |
06aae590 | 1034 | |
0331ee0c TG |
1035 | page_offset = page_size * (head / page_size); |
1036 | file_offset += page_offset; | |
1037 | head -= page_offset; | |
06aae590 ACM |
1038 | goto remap; |
1039 | } | |
1040 | ||
1041 | size = event->header.size; | |
1042 | ||
d6513281 TG |
1043 | if (size == 0 || |
1044 | perf_session__process_event(session, event, ops, file_pos) < 0) { | |
9486aa38 | 1045 | dump_printf("%#" PRIx64 " [%#x]: skipping unknown header type: %d\n", |
0331ee0c | 1046 | file_offset + head, event->header.size, |
06aae590 ACM |
1047 | event->header.type); |
1048 | /* | |
1049 | * assume we lost track of the stream, check alignment, and | |
1050 | * increment a single u64 in the hope to catch on again 'soon'. | |
1051 | */ | |
1052 | if (unlikely(head & 7)) | |
1053 | head &= ~7ULL; | |
1054 | ||
1055 | size = 8; | |
1056 | } | |
1057 | ||
1058 | head += size; | |
d6513281 | 1059 | file_pos += size; |
06aae590 | 1060 | |
55b44629 TG |
1061 | if (file_pos >= progress_next) { |
1062 | progress_next += file_size / 16; | |
1063 | ui_progress__update(progress, file_pos); | |
1064 | } | |
1065 | ||
d6513281 | 1066 | if (file_pos < file_size) |
06aae590 | 1067 | goto more; |
d6513281 | 1068 | |
06aae590 | 1069 | err = 0; |
c61e52ee | 1070 | /* do the final flush for ordered samples */ |
0331ee0c TG |
1071 | session->ordered_samples.next_flush = ULLONG_MAX; |
1072 | flush_sample_queue(session, ops); | |
06aae590 | 1073 | out_err: |
5f4d3f88 | 1074 | ui_progress__delete(progress); |
11095994 | 1075 | perf_session__warn_about_errors(session, ops); |
020bb75a | 1076 | perf_session_free_sample_buffers(session); |
06aae590 ACM |
1077 | return err; |
1078 | } | |
27295592 | 1079 | |
6122e4e4 ACM |
1080 | int perf_session__process_events(struct perf_session *self, |
1081 | struct perf_event_ops *ops) | |
1082 | { | |
1083 | int err; | |
1084 | ||
1085 | if (perf_session__register_idle_thread(self) == NULL) | |
1086 | return -ENOMEM; | |
1087 | ||
8dc58101 TZ |
1088 | if (!self->fd_pipe) |
1089 | err = __perf_session__process_events(self, | |
1090 | self->header.data_offset, | |
1091 | self->header.data_size, | |
1092 | self->size, ops); | |
1093 | else | |
1094 | err = __perf_session__process_pipe_events(self, ops); | |
88ca895d | 1095 | |
6122e4e4 ACM |
1096 | return err; |
1097 | } | |
1098 | ||
d549c769 | 1099 | bool perf_session__has_traces(struct perf_session *self, const char *msg) |
27295592 ACM |
1100 | { |
1101 | if (!(self->sample_type & PERF_SAMPLE_RAW)) { | |
d549c769 ACM |
1102 | pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg); |
1103 | return false; | |
27295592 ACM |
1104 | } |
1105 | ||
d549c769 | 1106 | return true; |
27295592 | 1107 | } |
56b03f3c | 1108 | |
a1645ce1 | 1109 | int perf_session__set_kallsyms_ref_reloc_sym(struct map **maps, |
56b03f3c ACM |
1110 | const char *symbol_name, |
1111 | u64 addr) | |
1112 | { | |
1113 | char *bracket; | |
9de89fe7 | 1114 | enum map_type i; |
a1645ce1 ZY |
1115 | struct ref_reloc_sym *ref; |
1116 | ||
1117 | ref = zalloc(sizeof(struct ref_reloc_sym)); | |
1118 | if (ref == NULL) | |
1119 | return -ENOMEM; | |
56b03f3c | 1120 | |
a1645ce1 ZY |
1121 | ref->name = strdup(symbol_name); |
1122 | if (ref->name == NULL) { | |
1123 | free(ref); | |
56b03f3c | 1124 | return -ENOMEM; |
a1645ce1 | 1125 | } |
56b03f3c | 1126 | |
a1645ce1 | 1127 | bracket = strchr(ref->name, ']'); |
56b03f3c ACM |
1128 | if (bracket) |
1129 | *bracket = '\0'; | |
1130 | ||
a1645ce1 | 1131 | ref->addr = addr; |
9de89fe7 ACM |
1132 | |
1133 | for (i = 0; i < MAP__NR_TYPES; ++i) { | |
a1645ce1 ZY |
1134 | struct kmap *kmap = map__kmap(maps[i]); |
1135 | kmap->ref_reloc_sym = ref; | |
9de89fe7 ACM |
1136 | } |
1137 | ||
56b03f3c ACM |
1138 | return 0; |
1139 | } | |
1f626bc3 ACM |
1140 | |
1141 | size_t perf_session__fprintf_dsos(struct perf_session *self, FILE *fp) | |
1142 | { | |
1143 | return __dsos__fprintf(&self->host_machine.kernel_dsos, fp) + | |
1144 | __dsos__fprintf(&self->host_machine.user_dsos, fp) + | |
1145 | machines__fprintf_dsos(&self->machines, fp); | |
1146 | } | |
f869097e ACM |
1147 | |
1148 | size_t perf_session__fprintf_dsos_buildid(struct perf_session *self, FILE *fp, | |
1149 | bool with_hits) | |
1150 | { | |
1151 | size_t ret = machine__fprintf_dsos_buildid(&self->host_machine, fp, with_hits); | |
1152 | return ret + machines__fprintf_dsos_buildid(&self->machines, fp, with_hits); | |
1153 | } | |
e248de33 ACM |
1154 | |
1155 | size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp) | |
1156 | { | |
1157 | struct perf_evsel *pos; | |
1158 | size_t ret = fprintf(fp, "Aggregated stats:\n"); | |
1159 | ||
1160 | ret += hists__fprintf_nr_events(&session->hists, fp); | |
1161 | ||
1162 | list_for_each_entry(pos, &session->evlist->entries, node) { | |
1163 | ret += fprintf(fp, "%s stats:\n", event_name(pos)); | |
1164 | ret += hists__fprintf_nr_events(&pos->hists, fp); | |
1165 | } | |
1166 | ||
1167 | return ret; | |
1168 | } | |
c0230b2b | 1169 | |
9cbdb702 DA |
1170 | struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session, |
1171 | unsigned int type) | |
1172 | { | |
1173 | struct perf_evsel *pos; | |
1174 | ||
1175 | list_for_each_entry(pos, &session->evlist->entries, node) { | |
1176 | if (pos->attr.type == type) | |
1177 | return pos; | |
1178 | } | |
1179 | return NULL; | |
1180 | } | |
1181 | ||
c0230b2b DA |
1182 | void perf_session__print_symbols(union perf_event *event, |
1183 | struct perf_sample *sample, | |
1184 | struct perf_session *session) | |
1185 | { | |
1186 | struct addr_location al; | |
1187 | const char *symname, *dsoname; | |
1188 | struct callchain_cursor *cursor = &session->callchain_cursor; | |
1189 | struct callchain_cursor_node *node; | |
1190 | ||
1191 | if (perf_event__preprocess_sample(event, session, &al, sample, | |
1192 | NULL) < 0) { | |
1193 | error("problem processing %d event, skipping it.\n", | |
1194 | event->header.type); | |
1195 | return; | |
1196 | } | |
1197 | ||
1198 | if (symbol_conf.use_callchain && sample->callchain) { | |
1199 | ||
1200 | if (perf_session__resolve_callchain(session, al.thread, | |
1201 | sample->callchain, NULL) != 0) { | |
1202 | if (verbose) | |
1203 | error("Failed to resolve callchain. Skipping\n"); | |
1204 | return; | |
1205 | } | |
1206 | callchain_cursor_commit(cursor); | |
1207 | ||
1208 | while (1) { | |
1209 | node = callchain_cursor_current(cursor); | |
1210 | if (!node) | |
1211 | break; | |
1212 | ||
1213 | if (node->sym && node->sym->name) | |
1214 | symname = node->sym->name; | |
1215 | else | |
1216 | symname = ""; | |
1217 | ||
1218 | if (node->map && node->map->dso && node->map->dso->name) | |
1219 | dsoname = node->map->dso->name; | |
1220 | else | |
1221 | dsoname = ""; | |
1222 | ||
1223 | printf("\t%16" PRIx64 " %s (%s)\n", node->ip, symname, dsoname); | |
1224 | ||
1225 | callchain_cursor_advance(cursor); | |
1226 | } | |
1227 | ||
1228 | } else { | |
1229 | if (al.sym && al.sym->name) | |
1230 | symname = al.sym->name; | |
1231 | else | |
1232 | symname = ""; | |
1233 | ||
1234 | if (al.map && al.map->dso && al.map->dso->name) | |
1235 | dsoname = al.map->dso->name; | |
1236 | else | |
1237 | dsoname = ""; | |
1238 | ||
1239 | printf("%16" PRIx64 " %s (%s)", al.addr, symname, dsoname); | |
1240 | } | |
1241 | } |