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> | |
8 | ||
9 | #include "session.h" | |
a328626b | 10 | #include "sort.h" |
94c744b6 ACM |
11 | #include "util.h" |
12 | ||
13 | static int perf_session__open(struct perf_session *self, bool force) | |
14 | { | |
15 | struct stat input_stat; | |
16 | ||
8dc58101 TZ |
17 | if (!strcmp(self->filename, "-")) { |
18 | self->fd_pipe = true; | |
19 | self->fd = STDIN_FILENO; | |
20 | ||
21 | if (perf_header__read(self, self->fd) < 0) | |
22 | pr_err("incompatible file format"); | |
23 | ||
24 | return 0; | |
25 | } | |
26 | ||
f887f301 | 27 | self->fd = open(self->filename, O_RDONLY); |
94c744b6 ACM |
28 | if (self->fd < 0) { |
29 | pr_err("failed to open file: %s", self->filename); | |
30 | if (!strcmp(self->filename, "perf.data")) | |
31 | pr_err(" (try 'perf record' first)"); | |
32 | pr_err("\n"); | |
33 | return -errno; | |
34 | } | |
35 | ||
36 | if (fstat(self->fd, &input_stat) < 0) | |
37 | goto out_close; | |
38 | ||
39 | if (!force && input_stat.st_uid && (input_stat.st_uid != geteuid())) { | |
40 | pr_err("file %s not owned by current user or root\n", | |
41 | self->filename); | |
42 | goto out_close; | |
43 | } | |
44 | ||
45 | if (!input_stat.st_size) { | |
46 | pr_info("zero-sized file (%s), nothing to do!\n", | |
47 | self->filename); | |
48 | goto out_close; | |
49 | } | |
50 | ||
8dc58101 | 51 | if (perf_header__read(self, self->fd) < 0) { |
94c744b6 ACM |
52 | pr_err("incompatible file format"); |
53 | goto out_close; | |
54 | } | |
55 | ||
56 | self->size = input_stat.st_size; | |
57 | return 0; | |
58 | ||
59 | out_close: | |
60 | close(self->fd); | |
61 | self->fd = -1; | |
62 | return -1; | |
63 | } | |
64 | ||
8dc58101 TZ |
65 | void perf_session__update_sample_type(struct perf_session *self) |
66 | { | |
67 | self->sample_type = perf_header__sample_type(&self->header); | |
68 | } | |
69 | ||
a1645ce1 ZY |
70 | int perf_session__create_kernel_maps(struct perf_session *self) |
71 | { | |
d28c6223 ACM |
72 | struct rb_root *machines = &self->machines; |
73 | int ret = machines__create_kernel_maps(machines, HOST_KERNEL_ID); | |
a1645ce1 | 74 | |
a1645ce1 | 75 | if (ret >= 0) |
d28c6223 | 76 | ret = machines__create_guest_kernel_maps(machines); |
a1645ce1 ZY |
77 | return ret; |
78 | } | |
79 | ||
454c407e | 80 | struct perf_session *perf_session__new(const char *filename, int mode, bool force, bool repipe) |
94c744b6 | 81 | { |
b3165f41 | 82 | size_t len = filename ? strlen(filename) + 1 : 0; |
94c744b6 ACM |
83 | struct perf_session *self = zalloc(sizeof(*self) + len); |
84 | ||
85 | if (self == NULL) | |
86 | goto out; | |
87 | ||
88 | if (perf_header__init(&self->header) < 0) | |
4aa65636 | 89 | goto out_free; |
94c744b6 ACM |
90 | |
91 | memcpy(self->filename, filename, len); | |
b3165f41 | 92 | self->threads = RB_ROOT; |
cb8f0939 | 93 | self->stats_by_id = RB_ROOT; |
b3165f41 | 94 | self->last_match = NULL; |
ec913369 ACM |
95 | self->mmap_window = 32; |
96 | self->cwd = NULL; | |
97 | self->cwdlen = 0; | |
31d337c4 | 98 | self->unknown_events = 0; |
23346f21 | 99 | self->machines = RB_ROOT; |
454c407e | 100 | self->repipe = repipe; |
c61e52ee | 101 | INIT_LIST_HEAD(&self->ordered_samples.samples_head); |
94c744b6 | 102 | |
64abebf7 ACM |
103 | if (mode == O_RDONLY) { |
104 | if (perf_session__open(self, force) < 0) | |
105 | goto out_delete; | |
106 | } else if (mode == O_WRONLY) { | |
107 | /* | |
108 | * In O_RDONLY mode this will be performed when reading the | |
109 | * kernel MMAP event, in event__process_mmap(). | |
110 | */ | |
111 | if (perf_session__create_kernel_maps(self) < 0) | |
112 | goto out_delete; | |
113 | } | |
d549c769 | 114 | |
8dc58101 | 115 | perf_session__update_sample_type(self); |
94c744b6 ACM |
116 | out: |
117 | return self; | |
4aa65636 | 118 | out_free: |
94c744b6 ACM |
119 | free(self); |
120 | return NULL; | |
4aa65636 ACM |
121 | out_delete: |
122 | perf_session__delete(self); | |
123 | return NULL; | |
94c744b6 ACM |
124 | } |
125 | ||
126 | void perf_session__delete(struct perf_session *self) | |
127 | { | |
128 | perf_header__exit(&self->header); | |
129 | close(self->fd); | |
ec913369 | 130 | free(self->cwd); |
94c744b6 ACM |
131 | free(self); |
132 | } | |
a328626b ACM |
133 | |
134 | static bool symbol__match_parent_regex(struct symbol *sym) | |
135 | { | |
136 | if (sym->name && !regexec(&parent_regex, sym->name, 0, NULL, 0)) | |
137 | return 1; | |
138 | ||
139 | return 0; | |
140 | } | |
141 | ||
b3c9ac08 ACM |
142 | struct map_symbol *perf_session__resolve_callchain(struct perf_session *self, |
143 | struct thread *thread, | |
144 | struct ip_callchain *chain, | |
145 | struct symbol **parent) | |
a328626b ACM |
146 | { |
147 | u8 cpumode = PERF_RECORD_MISC_USER; | |
a328626b | 148 | unsigned int i; |
ad5b217b | 149 | struct map_symbol *syms = calloc(chain->nr, sizeof(*syms)); |
a328626b | 150 | |
ad5b217b ACM |
151 | if (!syms) |
152 | return NULL; | |
a328626b ACM |
153 | |
154 | for (i = 0; i < chain->nr; i++) { | |
155 | u64 ip = chain->ips[i]; | |
156 | struct addr_location al; | |
157 | ||
158 | if (ip >= PERF_CONTEXT_MAX) { | |
159 | switch (ip) { | |
160 | case PERF_CONTEXT_HV: | |
161 | cpumode = PERF_RECORD_MISC_HYPERVISOR; break; | |
162 | case PERF_CONTEXT_KERNEL: | |
163 | cpumode = PERF_RECORD_MISC_KERNEL; break; | |
164 | case PERF_CONTEXT_USER: | |
165 | cpumode = PERF_RECORD_MISC_USER; break; | |
166 | default: | |
167 | break; | |
168 | } | |
169 | continue; | |
170 | } | |
171 | ||
a1645ce1 | 172 | al.filtered = false; |
a328626b | 173 | thread__find_addr_location(thread, self, cpumode, |
a1645ce1 | 174 | MAP__FUNCTION, thread->pid, ip, &al, NULL); |
a328626b ACM |
175 | if (al.sym != NULL) { |
176 | if (sort__has_parent && !*parent && | |
177 | symbol__match_parent_regex(al.sym)) | |
178 | *parent = al.sym; | |
d599db3f | 179 | if (!symbol_conf.use_callchain) |
a328626b | 180 | break; |
b3c9ac08 ACM |
181 | syms[i].map = al.map; |
182 | syms[i].sym = al.sym; | |
a328626b ACM |
183 | } |
184 | } | |
185 | ||
186 | return syms; | |
187 | } | |
06aae590 ACM |
188 | |
189 | static int process_event_stub(event_t *event __used, | |
190 | struct perf_session *session __used) | |
191 | { | |
192 | dump_printf(": unhandled!\n"); | |
193 | return 0; | |
194 | } | |
195 | ||
d6b17beb FW |
196 | static int process_finished_round_stub(event_t *event __used, |
197 | struct perf_session *session __used, | |
198 | struct perf_event_ops *ops __used) | |
199 | { | |
200 | dump_printf(": unhandled!\n"); | |
201 | return 0; | |
202 | } | |
203 | ||
204 | static int process_finished_round(event_t *event, | |
205 | struct perf_session *session, | |
206 | struct perf_event_ops *ops); | |
207 | ||
06aae590 ACM |
208 | static void perf_event_ops__fill_defaults(struct perf_event_ops *handler) |
209 | { | |
55aa640f ACM |
210 | if (handler->sample == NULL) |
211 | handler->sample = process_event_stub; | |
212 | if (handler->mmap == NULL) | |
213 | handler->mmap = process_event_stub; | |
214 | if (handler->comm == NULL) | |
215 | handler->comm = process_event_stub; | |
216 | if (handler->fork == NULL) | |
217 | handler->fork = process_event_stub; | |
218 | if (handler->exit == NULL) | |
219 | handler->exit = process_event_stub; | |
220 | if (handler->lost == NULL) | |
221 | handler->lost = process_event_stub; | |
222 | if (handler->read == NULL) | |
223 | handler->read = process_event_stub; | |
224 | if (handler->throttle == NULL) | |
225 | handler->throttle = process_event_stub; | |
226 | if (handler->unthrottle == NULL) | |
227 | handler->unthrottle = process_event_stub; | |
2c46dbb5 TZ |
228 | if (handler->attr == NULL) |
229 | handler->attr = process_event_stub; | |
cd19a035 TZ |
230 | if (handler->event_type == NULL) |
231 | handler->event_type = process_event_stub; | |
9215545e TZ |
232 | if (handler->tracing_data == NULL) |
233 | handler->tracing_data = process_event_stub; | |
c7929e47 TZ |
234 | if (handler->build_id == NULL) |
235 | handler->build_id = process_event_stub; | |
d6b17beb FW |
236 | if (handler->finished_round == NULL) { |
237 | if (handler->ordered_samples) | |
238 | handler->finished_round = process_finished_round; | |
239 | else | |
240 | handler->finished_round = process_finished_round_stub; | |
241 | } | |
06aae590 ACM |
242 | } |
243 | ||
244 | static const char *event__name[] = { | |
245 | [0] = "TOTAL", | |
246 | [PERF_RECORD_MMAP] = "MMAP", | |
247 | [PERF_RECORD_LOST] = "LOST", | |
248 | [PERF_RECORD_COMM] = "COMM", | |
249 | [PERF_RECORD_EXIT] = "EXIT", | |
250 | [PERF_RECORD_THROTTLE] = "THROTTLE", | |
251 | [PERF_RECORD_UNTHROTTLE] = "UNTHROTTLE", | |
252 | [PERF_RECORD_FORK] = "FORK", | |
253 | [PERF_RECORD_READ] = "READ", | |
254 | [PERF_RECORD_SAMPLE] = "SAMPLE", | |
2c46dbb5 | 255 | [PERF_RECORD_HEADER_ATTR] = "ATTR", |
cd19a035 | 256 | [PERF_RECORD_HEADER_EVENT_TYPE] = "EVENT_TYPE", |
9215545e | 257 | [PERF_RECORD_HEADER_TRACING_DATA] = "TRACING_DATA", |
c7929e47 | 258 | [PERF_RECORD_HEADER_BUILD_ID] = "BUILD_ID", |
06aae590 ACM |
259 | }; |
260 | ||
8dc58101 | 261 | unsigned long event__total[PERF_RECORD_HEADER_MAX]; |
06aae590 ACM |
262 | |
263 | void event__print_totals(void) | |
264 | { | |
265 | int i; | |
8dc58101 TZ |
266 | for (i = 0; i < PERF_RECORD_HEADER_MAX; ++i) { |
267 | if (!event__name[i]) | |
268 | continue; | |
06aae590 ACM |
269 | pr_info("%10s events: %10ld\n", |
270 | event__name[i], event__total[i]); | |
8dc58101 | 271 | } |
06aae590 ACM |
272 | } |
273 | ||
ba21594c ACM |
274 | void mem_bswap_64(void *src, int byte_size) |
275 | { | |
276 | u64 *m = src; | |
277 | ||
278 | while (byte_size > 0) { | |
279 | *m = bswap_64(*m); | |
280 | byte_size -= sizeof(u64); | |
281 | ++m; | |
282 | } | |
283 | } | |
284 | ||
285 | static void event__all64_swap(event_t *self) | |
286 | { | |
287 | struct perf_event_header *hdr = &self->header; | |
288 | mem_bswap_64(hdr + 1, self->header.size - sizeof(*hdr)); | |
289 | } | |
290 | ||
291 | static void event__comm_swap(event_t *self) | |
292 | { | |
293 | self->comm.pid = bswap_32(self->comm.pid); | |
294 | self->comm.tid = bswap_32(self->comm.tid); | |
295 | } | |
296 | ||
297 | static void event__mmap_swap(event_t *self) | |
298 | { | |
299 | self->mmap.pid = bswap_32(self->mmap.pid); | |
300 | self->mmap.tid = bswap_32(self->mmap.tid); | |
301 | self->mmap.start = bswap_64(self->mmap.start); | |
302 | self->mmap.len = bswap_64(self->mmap.len); | |
303 | self->mmap.pgoff = bswap_64(self->mmap.pgoff); | |
304 | } | |
305 | ||
306 | static void event__task_swap(event_t *self) | |
307 | { | |
308 | self->fork.pid = bswap_32(self->fork.pid); | |
309 | self->fork.tid = bswap_32(self->fork.tid); | |
310 | self->fork.ppid = bswap_32(self->fork.ppid); | |
311 | self->fork.ptid = bswap_32(self->fork.ptid); | |
312 | self->fork.time = bswap_64(self->fork.time); | |
313 | } | |
314 | ||
315 | static void event__read_swap(event_t *self) | |
316 | { | |
317 | self->read.pid = bswap_32(self->read.pid); | |
318 | self->read.tid = bswap_32(self->read.tid); | |
319 | self->read.value = bswap_64(self->read.value); | |
320 | self->read.time_enabled = bswap_64(self->read.time_enabled); | |
321 | self->read.time_running = bswap_64(self->read.time_running); | |
322 | self->read.id = bswap_64(self->read.id); | |
323 | } | |
324 | ||
2c46dbb5 TZ |
325 | static void event__attr_swap(event_t *self) |
326 | { | |
327 | size_t size; | |
328 | ||
329 | self->attr.attr.type = bswap_32(self->attr.attr.type); | |
330 | self->attr.attr.size = bswap_32(self->attr.attr.size); | |
331 | self->attr.attr.config = bswap_64(self->attr.attr.config); | |
332 | self->attr.attr.sample_period = bswap_64(self->attr.attr.sample_period); | |
333 | self->attr.attr.sample_type = bswap_64(self->attr.attr.sample_type); | |
334 | self->attr.attr.read_format = bswap_64(self->attr.attr.read_format); | |
335 | self->attr.attr.wakeup_events = bswap_32(self->attr.attr.wakeup_events); | |
336 | self->attr.attr.bp_type = bswap_32(self->attr.attr.bp_type); | |
337 | self->attr.attr.bp_addr = bswap_64(self->attr.attr.bp_addr); | |
338 | self->attr.attr.bp_len = bswap_64(self->attr.attr.bp_len); | |
339 | ||
340 | size = self->header.size; | |
341 | size -= (void *)&self->attr.id - (void *)self; | |
342 | mem_bswap_64(self->attr.id, size); | |
343 | } | |
344 | ||
cd19a035 TZ |
345 | static void event__event_type_swap(event_t *self) |
346 | { | |
347 | self->event_type.event_type.event_id = | |
348 | bswap_64(self->event_type.event_type.event_id); | |
349 | } | |
350 | ||
9215545e TZ |
351 | static void event__tracing_data_swap(event_t *self) |
352 | { | |
353 | self->tracing_data.size = bswap_32(self->tracing_data.size); | |
354 | } | |
355 | ||
ba21594c ACM |
356 | typedef void (*event__swap_op)(event_t *self); |
357 | ||
358 | static event__swap_op event__swap_ops[] = { | |
359 | [PERF_RECORD_MMAP] = event__mmap_swap, | |
360 | [PERF_RECORD_COMM] = event__comm_swap, | |
361 | [PERF_RECORD_FORK] = event__task_swap, | |
362 | [PERF_RECORD_EXIT] = event__task_swap, | |
363 | [PERF_RECORD_LOST] = event__all64_swap, | |
364 | [PERF_RECORD_READ] = event__read_swap, | |
365 | [PERF_RECORD_SAMPLE] = event__all64_swap, | |
2c46dbb5 | 366 | [PERF_RECORD_HEADER_ATTR] = event__attr_swap, |
cd19a035 | 367 | [PERF_RECORD_HEADER_EVENT_TYPE] = event__event_type_swap, |
9215545e | 368 | [PERF_RECORD_HEADER_TRACING_DATA] = event__tracing_data_swap, |
c7929e47 | 369 | [PERF_RECORD_HEADER_BUILD_ID] = NULL, |
8dc58101 | 370 | [PERF_RECORD_HEADER_MAX] = NULL, |
ba21594c ACM |
371 | }; |
372 | ||
c61e52ee FW |
373 | struct sample_queue { |
374 | u64 timestamp; | |
375 | struct sample_event *event; | |
376 | struct list_head list; | |
377 | }; | |
378 | ||
c61e52ee FW |
379 | static void flush_sample_queue(struct perf_session *s, |
380 | struct perf_event_ops *ops) | |
381 | { | |
382 | struct list_head *head = &s->ordered_samples.samples_head; | |
d6b17beb | 383 | u64 limit = s->ordered_samples.next_flush; |
c61e52ee FW |
384 | struct sample_queue *tmp, *iter; |
385 | ||
d6b17beb | 386 | if (!ops->ordered_samples || !limit) |
c61e52ee FW |
387 | return; |
388 | ||
389 | list_for_each_entry_safe(iter, tmp, head, list) { | |
390 | if (iter->timestamp > limit) | |
391 | return; | |
392 | ||
393 | if (iter == s->ordered_samples.last_inserted) | |
394 | s->ordered_samples.last_inserted = NULL; | |
395 | ||
396 | ops->sample((event_t *)iter->event, s); | |
397 | ||
398 | s->ordered_samples.last_flush = iter->timestamp; | |
399 | list_del(&iter->list); | |
400 | free(iter->event); | |
401 | free(iter); | |
402 | } | |
403 | } | |
404 | ||
d6b17beb FW |
405 | /* |
406 | * When perf record finishes a pass on every buffers, it records this pseudo | |
407 | * event. | |
408 | * We record the max timestamp t found in the pass n. | |
409 | * Assuming these timestamps are monotonic across cpus, we know that if | |
410 | * a buffer still has events with timestamps below t, they will be all | |
411 | * available and then read in the pass n + 1. | |
412 | * Hence when we start to read the pass n + 2, we can safely flush every | |
413 | * events with timestamps below t. | |
414 | * | |
415 | * ============ PASS n ================= | |
416 | * CPU 0 | CPU 1 | |
417 | * | | |
418 | * cnt1 timestamps | cnt2 timestamps | |
419 | * 1 | 2 | |
420 | * 2 | 3 | |
421 | * - | 4 <--- max recorded | |
422 | * | |
423 | * ============ PASS n + 1 ============== | |
424 | * CPU 0 | CPU 1 | |
425 | * | | |
426 | * cnt1 timestamps | cnt2 timestamps | |
427 | * 3 | 5 | |
428 | * 4 | 6 | |
429 | * 5 | 7 <---- max recorded | |
430 | * | |
431 | * Flush every events below timestamp 4 | |
432 | * | |
433 | * ============ PASS n + 2 ============== | |
434 | * CPU 0 | CPU 1 | |
435 | * | | |
436 | * cnt1 timestamps | cnt2 timestamps | |
437 | * 6 | 8 | |
438 | * 7 | 9 | |
439 | * - | 10 | |
440 | * | |
441 | * Flush every events below timestamp 7 | |
442 | * etc... | |
443 | */ | |
444 | static int process_finished_round(event_t *event __used, | |
445 | struct perf_session *session, | |
446 | struct perf_event_ops *ops) | |
447 | { | |
448 | flush_sample_queue(session, ops); | |
449 | session->ordered_samples.next_flush = session->ordered_samples.max_timestamp; | |
450 | ||
451 | return 0; | |
452 | } | |
453 | ||
c61e52ee FW |
454 | static void __queue_sample_end(struct sample_queue *new, struct list_head *head) |
455 | { | |
456 | struct sample_queue *iter; | |
457 | ||
458 | list_for_each_entry_reverse(iter, head, list) { | |
459 | if (iter->timestamp < new->timestamp) { | |
460 | list_add(&new->list, &iter->list); | |
461 | return; | |
462 | } | |
463 | } | |
464 | ||
465 | list_add(&new->list, head); | |
466 | } | |
467 | ||
468 | static void __queue_sample_before(struct sample_queue *new, | |
469 | struct sample_queue *iter, | |
470 | struct list_head *head) | |
471 | { | |
472 | list_for_each_entry_continue_reverse(iter, head, list) { | |
473 | if (iter->timestamp < new->timestamp) { | |
474 | list_add(&new->list, &iter->list); | |
475 | return; | |
476 | } | |
477 | } | |
478 | ||
479 | list_add(&new->list, head); | |
480 | } | |
481 | ||
482 | static void __queue_sample_after(struct sample_queue *new, | |
483 | struct sample_queue *iter, | |
484 | struct list_head *head) | |
485 | { | |
486 | list_for_each_entry_continue(iter, head, list) { | |
487 | if (iter->timestamp > new->timestamp) { | |
488 | list_add_tail(&new->list, &iter->list); | |
489 | return; | |
490 | } | |
491 | } | |
492 | list_add_tail(&new->list, head); | |
493 | } | |
494 | ||
495 | /* The queue is ordered by time */ | |
496 | static void __queue_sample_event(struct sample_queue *new, | |
497 | struct perf_session *s) | |
498 | { | |
499 | struct sample_queue *last_inserted = s->ordered_samples.last_inserted; | |
500 | struct list_head *head = &s->ordered_samples.samples_head; | |
501 | ||
502 | ||
503 | if (!last_inserted) { | |
504 | __queue_sample_end(new, head); | |
505 | return; | |
506 | } | |
507 | ||
508 | /* | |
509 | * Most of the time the current event has a timestamp | |
510 | * very close to the last event inserted, unless we just switched | |
511 | * to another event buffer. Having a sorting based on a list and | |
512 | * on the last inserted event that is close to the current one is | |
513 | * probably more efficient than an rbtree based sorting. | |
514 | */ | |
515 | if (last_inserted->timestamp >= new->timestamp) | |
516 | __queue_sample_before(new, last_inserted, head); | |
517 | else | |
518 | __queue_sample_after(new, last_inserted, head); | |
519 | } | |
520 | ||
521 | static int queue_sample_event(event_t *event, struct sample_data *data, | |
d6b17beb | 522 | struct perf_session *s) |
c61e52ee FW |
523 | { |
524 | u64 timestamp = data->time; | |
525 | struct sample_queue *new; | |
c61e52ee | 526 | |
c61e52ee FW |
527 | |
528 | if (timestamp < s->ordered_samples.last_flush) { | |
529 | printf("Warning: Timestamp below last timeslice flush\n"); | |
530 | return -EINVAL; | |
531 | } | |
532 | ||
533 | new = malloc(sizeof(*new)); | |
534 | if (!new) | |
535 | return -ENOMEM; | |
536 | ||
537 | new->timestamp = timestamp; | |
538 | ||
539 | new->event = malloc(event->header.size); | |
540 | if (!new->event) { | |
541 | free(new); | |
542 | return -ENOMEM; | |
543 | } | |
544 | ||
545 | memcpy(new->event, event, event->header.size); | |
546 | ||
547 | __queue_sample_event(new, s); | |
548 | s->ordered_samples.last_inserted = new; | |
549 | ||
d6b17beb FW |
550 | if (new->timestamp > s->ordered_samples.max_timestamp) |
551 | s->ordered_samples.max_timestamp = new->timestamp; | |
c61e52ee FW |
552 | |
553 | return 0; | |
554 | } | |
555 | ||
556 | static int perf_session__process_sample(event_t *event, struct perf_session *s, | |
557 | struct perf_event_ops *ops) | |
558 | { | |
559 | struct sample_data data; | |
560 | ||
561 | if (!ops->ordered_samples) | |
562 | return ops->sample(event, s); | |
563 | ||
564 | bzero(&data, sizeof(struct sample_data)); | |
565 | event__parse_sample(event, s->sample_type, &data); | |
566 | ||
d6b17beb | 567 | queue_sample_event(event, &data, s); |
c61e52ee FW |
568 | |
569 | return 0; | |
570 | } | |
571 | ||
06aae590 ACM |
572 | static int perf_session__process_event(struct perf_session *self, |
573 | event_t *event, | |
574 | struct perf_event_ops *ops, | |
ba21594c | 575 | u64 offset, u64 head) |
06aae590 ACM |
576 | { |
577 | trace_event(event); | |
578 | ||
8dc58101 | 579 | if (event->header.type < PERF_RECORD_HEADER_MAX) { |
ba21594c | 580 | dump_printf("%#Lx [%#x]: PERF_RECORD_%s", |
0d755034 | 581 | offset + head, event->header.size, |
06aae590 ACM |
582 | event__name[event->header.type]); |
583 | ++event__total[0]; | |
584 | ++event__total[event->header.type]; | |
585 | } | |
586 | ||
ba21594c ACM |
587 | if (self->header.needs_swap && event__swap_ops[event->header.type]) |
588 | event__swap_ops[event->header.type](event); | |
589 | ||
06aae590 ACM |
590 | switch (event->header.type) { |
591 | case PERF_RECORD_SAMPLE: | |
c61e52ee | 592 | return perf_session__process_sample(event, self, ops); |
06aae590 | 593 | case PERF_RECORD_MMAP: |
55aa640f | 594 | return ops->mmap(event, self); |
06aae590 | 595 | case PERF_RECORD_COMM: |
55aa640f | 596 | return ops->comm(event, self); |
06aae590 | 597 | case PERF_RECORD_FORK: |
55aa640f | 598 | return ops->fork(event, self); |
06aae590 | 599 | case PERF_RECORD_EXIT: |
55aa640f | 600 | return ops->exit(event, self); |
06aae590 | 601 | case PERF_RECORD_LOST: |
55aa640f | 602 | return ops->lost(event, self); |
06aae590 | 603 | case PERF_RECORD_READ: |
55aa640f | 604 | return ops->read(event, self); |
06aae590 | 605 | case PERF_RECORD_THROTTLE: |
55aa640f | 606 | return ops->throttle(event, self); |
06aae590 | 607 | case PERF_RECORD_UNTHROTTLE: |
55aa640f | 608 | return ops->unthrottle(event, self); |
2c46dbb5 TZ |
609 | case PERF_RECORD_HEADER_ATTR: |
610 | return ops->attr(event, self); | |
cd19a035 TZ |
611 | case PERF_RECORD_HEADER_EVENT_TYPE: |
612 | return ops->event_type(event, self); | |
9215545e TZ |
613 | case PERF_RECORD_HEADER_TRACING_DATA: |
614 | /* setup for reading amidst mmap */ | |
615 | lseek(self->fd, offset + head, SEEK_SET); | |
616 | return ops->tracing_data(event, self); | |
c7929e47 TZ |
617 | case PERF_RECORD_HEADER_BUILD_ID: |
618 | return ops->build_id(event, self); | |
d6b17beb FW |
619 | case PERF_RECORD_FINISHED_ROUND: |
620 | return ops->finished_round(event, self, ops); | |
06aae590 | 621 | default: |
31d337c4 | 622 | self->unknown_events++; |
06aae590 ACM |
623 | return -1; |
624 | } | |
625 | } | |
626 | ||
ba21594c ACM |
627 | void perf_event_header__bswap(struct perf_event_header *self) |
628 | { | |
629 | self->type = bswap_32(self->type); | |
630 | self->misc = bswap_16(self->misc); | |
631 | self->size = bswap_16(self->size); | |
632 | } | |
633 | ||
06aae590 ACM |
634 | static struct thread *perf_session__register_idle_thread(struct perf_session *self) |
635 | { | |
636 | struct thread *thread = perf_session__findnew(self, 0); | |
637 | ||
638 | if (thread == NULL || thread__set_comm(thread, "swapper")) { | |
639 | pr_err("problem inserting idle task.\n"); | |
640 | thread = NULL; | |
641 | } | |
642 | ||
643 | return thread; | |
644 | } | |
645 | ||
8dc58101 TZ |
646 | int do_read(int fd, void *buf, size_t size) |
647 | { | |
648 | void *buf_start = buf; | |
649 | ||
650 | while (size) { | |
651 | int ret = read(fd, buf, size); | |
652 | ||
653 | if (ret <= 0) | |
654 | return ret; | |
655 | ||
656 | size -= ret; | |
657 | buf += ret; | |
658 | } | |
659 | ||
660 | return buf - buf_start; | |
661 | } | |
662 | ||
663 | #define session_done() (*(volatile int *)(&session_done)) | |
664 | volatile int session_done; | |
665 | ||
666 | static int __perf_session__process_pipe_events(struct perf_session *self, | |
667 | struct perf_event_ops *ops) | |
668 | { | |
669 | event_t event; | |
670 | uint32_t size; | |
671 | int skip = 0; | |
672 | u64 head; | |
673 | int err; | |
674 | void *p; | |
675 | ||
676 | perf_event_ops__fill_defaults(ops); | |
677 | ||
678 | head = 0; | |
679 | more: | |
680 | err = do_read(self->fd, &event, sizeof(struct perf_event_header)); | |
681 | if (err <= 0) { | |
682 | if (err == 0) | |
683 | goto done; | |
684 | ||
685 | pr_err("failed to read event header\n"); | |
686 | goto out_err; | |
687 | } | |
688 | ||
689 | if (self->header.needs_swap) | |
690 | perf_event_header__bswap(&event.header); | |
691 | ||
692 | size = event.header.size; | |
693 | if (size == 0) | |
694 | size = 8; | |
695 | ||
696 | p = &event; | |
697 | p += sizeof(struct perf_event_header); | |
698 | ||
699 | err = do_read(self->fd, p, size - sizeof(struct perf_event_header)); | |
700 | if (err <= 0) { | |
701 | if (err == 0) { | |
702 | pr_err("unexpected end of event stream\n"); | |
703 | goto done; | |
704 | } | |
705 | ||
706 | pr_err("failed to read event data\n"); | |
707 | goto out_err; | |
708 | } | |
709 | ||
710 | if (size == 0 || | |
711 | (skip = perf_session__process_event(self, &event, ops, | |
712 | 0, head)) < 0) { | |
713 | dump_printf("%#Lx [%#x]: skipping unknown header type: %d\n", | |
714 | head, event.header.size, event.header.type); | |
715 | /* | |
716 | * assume we lost track of the stream, check alignment, and | |
717 | * increment a single u64 in the hope to catch on again 'soon'. | |
718 | */ | |
719 | if (unlikely(head & 7)) | |
720 | head &= ~7ULL; | |
721 | ||
722 | size = 8; | |
723 | } | |
724 | ||
725 | head += size; | |
726 | ||
727 | dump_printf("\n%#Lx [%#x]: event: %d\n", | |
728 | head, event.header.size, event.header.type); | |
729 | ||
730 | if (skip > 0) | |
731 | head += skip; | |
732 | ||
733 | if (!session_done()) | |
734 | goto more; | |
735 | done: | |
736 | err = 0; | |
737 | out_err: | |
738 | return err; | |
739 | } | |
740 | ||
6122e4e4 ACM |
741 | int __perf_session__process_events(struct perf_session *self, |
742 | u64 data_offset, u64 data_size, | |
743 | u64 file_size, struct perf_event_ops *ops) | |
06aae590 | 744 | { |
ba21594c ACM |
745 | int err, mmap_prot, mmap_flags; |
746 | u64 head, shift; | |
747 | u64 offset = 0; | |
06aae590 ACM |
748 | size_t page_size; |
749 | event_t *event; | |
750 | uint32_t size; | |
751 | char *buf; | |
5f4d3f88 ACM |
752 | struct ui_progress *progress = ui_progress__new("Processing events...", |
753 | self->size); | |
754 | if (progress == NULL) | |
755 | return -1; | |
06aae590 | 756 | |
06aae590 ACM |
757 | perf_event_ops__fill_defaults(ops); |
758 | ||
1b75962e | 759 | page_size = sysconf(_SC_PAGESIZE); |
06aae590 | 760 | |
6122e4e4 | 761 | head = data_offset; |
06aae590 ACM |
762 | shift = page_size * (head / page_size); |
763 | offset += shift; | |
764 | head -= shift; | |
765 | ||
ba21594c ACM |
766 | mmap_prot = PROT_READ; |
767 | mmap_flags = MAP_SHARED; | |
768 | ||
769 | if (self->header.needs_swap) { | |
770 | mmap_prot |= PROT_WRITE; | |
771 | mmap_flags = MAP_PRIVATE; | |
772 | } | |
06aae590 | 773 | remap: |
ba21594c ACM |
774 | buf = mmap(NULL, page_size * self->mmap_window, mmap_prot, |
775 | mmap_flags, self->fd, offset); | |
06aae590 ACM |
776 | if (buf == MAP_FAILED) { |
777 | pr_err("failed to mmap file\n"); | |
778 | err = -errno; | |
779 | goto out_err; | |
780 | } | |
781 | ||
782 | more: | |
783 | event = (event_t *)(buf + head); | |
5f4d3f88 | 784 | ui_progress__update(progress, offset); |
06aae590 | 785 | |
ba21594c ACM |
786 | if (self->header.needs_swap) |
787 | perf_event_header__bswap(&event->header); | |
06aae590 ACM |
788 | size = event->header.size; |
789 | if (size == 0) | |
790 | size = 8; | |
791 | ||
792 | if (head + event->header.size >= page_size * self->mmap_window) { | |
793 | int munmap_ret; | |
794 | ||
795 | shift = page_size * (head / page_size); | |
796 | ||
797 | munmap_ret = munmap(buf, page_size * self->mmap_window); | |
798 | assert(munmap_ret == 0); | |
799 | ||
800 | offset += shift; | |
801 | head -= shift; | |
802 | goto remap; | |
803 | } | |
804 | ||
805 | size = event->header.size; | |
806 | ||
ba21594c | 807 | dump_printf("\n%#Lx [%#x]: event: %d\n", |
0d755034 | 808 | offset + head, event->header.size, event->header.type); |
06aae590 ACM |
809 | |
810 | if (size == 0 || | |
811 | perf_session__process_event(self, event, ops, offset, head) < 0) { | |
ba21594c | 812 | dump_printf("%#Lx [%#x]: skipping unknown header type: %d\n", |
0d755034 | 813 | offset + head, event->header.size, |
06aae590 ACM |
814 | event->header.type); |
815 | /* | |
816 | * assume we lost track of the stream, check alignment, and | |
817 | * increment a single u64 in the hope to catch on again 'soon'. | |
818 | */ | |
819 | if (unlikely(head & 7)) | |
820 | head &= ~7ULL; | |
821 | ||
822 | size = 8; | |
823 | } | |
824 | ||
825 | head += size; | |
826 | ||
6122e4e4 | 827 | if (offset + head >= data_offset + data_size) |
06aae590 ACM |
828 | goto done; |
829 | ||
6122e4e4 | 830 | if (offset + head < file_size) |
06aae590 ACM |
831 | goto more; |
832 | done: | |
833 | err = 0; | |
c61e52ee | 834 | /* do the final flush for ordered samples */ |
d6b17beb | 835 | self->ordered_samples.next_flush = ULLONG_MAX; |
c61e52ee | 836 | flush_sample_queue(self, ops); |
06aae590 | 837 | out_err: |
5f4d3f88 | 838 | ui_progress__delete(progress); |
06aae590 ACM |
839 | return err; |
840 | } | |
27295592 | 841 | |
6122e4e4 ACM |
842 | int perf_session__process_events(struct perf_session *self, |
843 | struct perf_event_ops *ops) | |
844 | { | |
845 | int err; | |
846 | ||
847 | if (perf_session__register_idle_thread(self) == NULL) | |
848 | return -ENOMEM; | |
849 | ||
850 | if (!symbol_conf.full_paths) { | |
851 | char bf[PATH_MAX]; | |
852 | ||
853 | if (getcwd(bf, sizeof(bf)) == NULL) { | |
854 | err = -errno; | |
855 | out_getcwd_err: | |
856 | pr_err("failed to get the current directory\n"); | |
857 | goto out_err; | |
858 | } | |
859 | self->cwd = strdup(bf); | |
860 | if (self->cwd == NULL) { | |
861 | err = -ENOMEM; | |
862 | goto out_getcwd_err; | |
863 | } | |
864 | self->cwdlen = strlen(self->cwd); | |
865 | } | |
866 | ||
8dc58101 TZ |
867 | if (!self->fd_pipe) |
868 | err = __perf_session__process_events(self, | |
869 | self->header.data_offset, | |
870 | self->header.data_size, | |
871 | self->size, ops); | |
872 | else | |
873 | err = __perf_session__process_pipe_events(self, ops); | |
6122e4e4 ACM |
874 | out_err: |
875 | return err; | |
876 | } | |
877 | ||
d549c769 | 878 | bool perf_session__has_traces(struct perf_session *self, const char *msg) |
27295592 ACM |
879 | { |
880 | if (!(self->sample_type & PERF_SAMPLE_RAW)) { | |
d549c769 ACM |
881 | pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg); |
882 | return false; | |
27295592 ACM |
883 | } |
884 | ||
d549c769 | 885 | return true; |
27295592 | 886 | } |
56b03f3c | 887 | |
a1645ce1 | 888 | int perf_session__set_kallsyms_ref_reloc_sym(struct map **maps, |
56b03f3c ACM |
889 | const char *symbol_name, |
890 | u64 addr) | |
891 | { | |
892 | char *bracket; | |
9de89fe7 | 893 | enum map_type i; |
a1645ce1 ZY |
894 | struct ref_reloc_sym *ref; |
895 | ||
896 | ref = zalloc(sizeof(struct ref_reloc_sym)); | |
897 | if (ref == NULL) | |
898 | return -ENOMEM; | |
56b03f3c | 899 | |
a1645ce1 ZY |
900 | ref->name = strdup(symbol_name); |
901 | if (ref->name == NULL) { | |
902 | free(ref); | |
56b03f3c | 903 | return -ENOMEM; |
a1645ce1 | 904 | } |
56b03f3c | 905 | |
a1645ce1 | 906 | bracket = strchr(ref->name, ']'); |
56b03f3c ACM |
907 | if (bracket) |
908 | *bracket = '\0'; | |
909 | ||
a1645ce1 | 910 | ref->addr = addr; |
9de89fe7 ACM |
911 | |
912 | for (i = 0; i < MAP__NR_TYPES; ++i) { | |
a1645ce1 ZY |
913 | struct kmap *kmap = map__kmap(maps[i]); |
914 | kmap->ref_reloc_sym = ref; | |
9de89fe7 ACM |
915 | } |
916 | ||
56b03f3c ACM |
917 | return 0; |
918 | } |