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 ACM |
9 | |
10 | #include "session.h" | |
a328626b | 11 | #include "sort.h" |
94c744b6 ACM |
12 | #include "util.h" |
13 | ||
14 | static int perf_session__open(struct perf_session *self, bool force) | |
15 | { | |
16 | struct stat input_stat; | |
17 | ||
8dc58101 TZ |
18 | if (!strcmp(self->filename, "-")) { |
19 | self->fd_pipe = true; | |
20 | self->fd = STDIN_FILENO; | |
21 | ||
22 | if (perf_header__read(self, self->fd) < 0) | |
23 | pr_err("incompatible file format"); | |
24 | ||
25 | return 0; | |
26 | } | |
27 | ||
f887f301 | 28 | self->fd = open(self->filename, O_RDONLY); |
94c744b6 | 29 | if (self->fd < 0) { |
0f2c3de2 AI |
30 | int err = errno; |
31 | ||
32 | pr_err("failed to open %s: %s", self->filename, strerror(err)); | |
33 | if (err == ENOENT && !strcmp(self->filename, "perf.data")) | |
94c744b6 ACM |
34 | pr_err(" (try 'perf record' first)"); |
35 | pr_err("\n"); | |
36 | return -errno; | |
37 | } | |
38 | ||
39 | if (fstat(self->fd, &input_stat) < 0) | |
40 | goto out_close; | |
41 | ||
42 | if (!force && input_stat.st_uid && (input_stat.st_uid != geteuid())) { | |
43 | pr_err("file %s not owned by current user or root\n", | |
44 | self->filename); | |
45 | goto out_close; | |
46 | } | |
47 | ||
48 | if (!input_stat.st_size) { | |
49 | pr_info("zero-sized file (%s), nothing to do!\n", | |
50 | self->filename); | |
51 | goto out_close; | |
52 | } | |
53 | ||
8dc58101 | 54 | if (perf_header__read(self, self->fd) < 0) { |
94c744b6 ACM |
55 | pr_err("incompatible file format"); |
56 | goto out_close; | |
57 | } | |
58 | ||
59 | self->size = input_stat.st_size; | |
60 | return 0; | |
61 | ||
62 | out_close: | |
63 | close(self->fd); | |
64 | self->fd = -1; | |
65 | return -1; | |
66 | } | |
67 | ||
9c90a61c | 68 | static void perf_session__id_header_size(struct perf_session *session) |
8dc58101 | 69 | { |
9c90a61c ACM |
70 | struct sample_data *data; |
71 | u64 sample_type = session->sample_type; | |
72 | u16 size = 0; | |
73 | ||
74 | if (!session->sample_id_all) | |
75 | goto out; | |
76 | ||
77 | if (sample_type & PERF_SAMPLE_TID) | |
78 | size += sizeof(data->tid) * 2; | |
79 | ||
80 | if (sample_type & PERF_SAMPLE_TIME) | |
81 | size += sizeof(data->time); | |
82 | ||
83 | if (sample_type & PERF_SAMPLE_ID) | |
84 | size += sizeof(data->id); | |
85 | ||
86 | if (sample_type & PERF_SAMPLE_STREAM_ID) | |
87 | size += sizeof(data->stream_id); | |
88 | ||
89 | if (sample_type & PERF_SAMPLE_CPU) | |
90 | size += sizeof(data->cpu) * 2; | |
91 | out: | |
92 | session->id_hdr_size = size; | |
93 | } | |
94 | ||
95 | void perf_session__set_sample_id_all(struct perf_session *session, bool value) | |
96 | { | |
97 | session->sample_id_all = value; | |
98 | perf_session__id_header_size(session); | |
8dc58101 TZ |
99 | } |
100 | ||
640c03ce ACM |
101 | void perf_session__set_sample_type(struct perf_session *session, u64 type) |
102 | { | |
103 | session->sample_type = type; | |
104 | } | |
105 | ||
9c90a61c ACM |
106 | void perf_session__update_sample_type(struct perf_session *self) |
107 | { | |
108 | self->sample_type = perf_header__sample_type(&self->header); | |
109 | self->sample_id_all = perf_header__sample_id_all(&self->header); | |
110 | perf_session__id_header_size(self); | |
111 | } | |
112 | ||
a1645ce1 ZY |
113 | int perf_session__create_kernel_maps(struct perf_session *self) |
114 | { | |
d118f8ba | 115 | int ret = machine__create_kernel_maps(&self->host_machine); |
a1645ce1 | 116 | |
a1645ce1 | 117 | if (ret >= 0) |
d118f8ba | 118 | ret = machines__create_guest_kernel_maps(&self->machines); |
a1645ce1 ZY |
119 | return ret; |
120 | } | |
121 | ||
076c6e45 ACM |
122 | static void perf_session__destroy_kernel_maps(struct perf_session *self) |
123 | { | |
124 | machine__destroy_kernel_maps(&self->host_machine); | |
125 | machines__destroy_guest_kernel_maps(&self->machines); | |
126 | } | |
127 | ||
21ef97f0 IM |
128 | struct perf_session *perf_session__new(const char *filename, int mode, |
129 | bool force, bool repipe, | |
130 | struct perf_event_ops *ops) | |
94c744b6 | 131 | { |
b3165f41 | 132 | size_t len = filename ? strlen(filename) + 1 : 0; |
94c744b6 ACM |
133 | struct perf_session *self = zalloc(sizeof(*self) + len); |
134 | ||
135 | if (self == NULL) | |
136 | goto out; | |
137 | ||
138 | if (perf_header__init(&self->header) < 0) | |
4aa65636 | 139 | goto out_free; |
94c744b6 ACM |
140 | |
141 | memcpy(self->filename, filename, len); | |
b3165f41 | 142 | self->threads = RB_ROOT; |
720a3aeb | 143 | INIT_LIST_HEAD(&self->dead_threads); |
1c02c4d2 | 144 | self->hists_tree = RB_ROOT; |
b3165f41 | 145 | self->last_match = NULL; |
55b44629 TG |
146 | /* |
147 | * On 64bit we can mmap the data file in one go. No need for tiny mmap | |
148 | * slices. On 32bit we use 32MB. | |
149 | */ | |
150 | #if BITS_PER_LONG == 64 | |
151 | self->mmap_window = ULLONG_MAX; | |
152 | #else | |
153 | self->mmap_window = 32 * 1024 * 1024ULL; | |
154 | #endif | |
23346f21 | 155 | self->machines = RB_ROOT; |
454c407e | 156 | self->repipe = repipe; |
a1225dec | 157 | INIT_LIST_HEAD(&self->ordered_samples.samples); |
020bb75a | 158 | INIT_LIST_HEAD(&self->ordered_samples.sample_cache); |
5c891f38 | 159 | INIT_LIST_HEAD(&self->ordered_samples.to_free); |
1f626bc3 | 160 | machine__init(&self->host_machine, "", HOST_KERNEL_ID); |
94c744b6 | 161 | |
64abebf7 ACM |
162 | if (mode == O_RDONLY) { |
163 | if (perf_session__open(self, force) < 0) | |
164 | goto out_delete; | |
165 | } else if (mode == O_WRONLY) { | |
166 | /* | |
167 | * In O_RDONLY mode this will be performed when reading the | |
168 | * kernel MMAP event, in event__process_mmap(). | |
169 | */ | |
170 | if (perf_session__create_kernel_maps(self) < 0) | |
171 | goto out_delete; | |
172 | } | |
d549c769 | 173 | |
8dc58101 | 174 | perf_session__update_sample_type(self); |
21ef97f0 IM |
175 | |
176 | if (ops && ops->ordering_requires_timestamps && | |
177 | ops->ordered_samples && !self->sample_id_all) { | |
178 | dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n"); | |
179 | ops->ordered_samples = false; | |
180 | } | |
181 | ||
94c744b6 ACM |
182 | out: |
183 | return self; | |
4aa65636 | 184 | out_free: |
94c744b6 ACM |
185 | free(self); |
186 | return NULL; | |
4aa65636 ACM |
187 | out_delete: |
188 | perf_session__delete(self); | |
189 | return NULL; | |
94c744b6 ACM |
190 | } |
191 | ||
d65a458b ACM |
192 | static void perf_session__delete_dead_threads(struct perf_session *self) |
193 | { | |
194 | struct thread *n, *t; | |
195 | ||
196 | list_for_each_entry_safe(t, n, &self->dead_threads, node) { | |
197 | list_del(&t->node); | |
198 | thread__delete(t); | |
199 | } | |
200 | } | |
201 | ||
202 | static void perf_session__delete_threads(struct perf_session *self) | |
203 | { | |
204 | struct rb_node *nd = rb_first(&self->threads); | |
205 | ||
206 | while (nd) { | |
207 | struct thread *t = rb_entry(nd, struct thread, rb_node); | |
208 | ||
209 | rb_erase(&t->rb_node, &self->threads); | |
210 | nd = rb_next(nd); | |
211 | thread__delete(t); | |
212 | } | |
213 | } | |
214 | ||
94c744b6 ACM |
215 | void perf_session__delete(struct perf_session *self) |
216 | { | |
217 | perf_header__exit(&self->header); | |
076c6e45 | 218 | perf_session__destroy_kernel_maps(self); |
d65a458b ACM |
219 | perf_session__delete_dead_threads(self); |
220 | perf_session__delete_threads(self); | |
221 | machine__exit(&self->host_machine); | |
94c744b6 ACM |
222 | close(self->fd); |
223 | free(self); | |
224 | } | |
a328626b | 225 | |
720a3aeb ACM |
226 | void perf_session__remove_thread(struct perf_session *self, struct thread *th) |
227 | { | |
70597f21 | 228 | self->last_match = NULL; |
720a3aeb ACM |
229 | rb_erase(&th->rb_node, &self->threads); |
230 | /* | |
231 | * We may have references to this thread, for instance in some hist_entry | |
232 | * instances, so just move them to a separate list. | |
233 | */ | |
234 | list_add_tail(&th->node, &self->dead_threads); | |
235 | } | |
236 | ||
a328626b ACM |
237 | static bool symbol__match_parent_regex(struct symbol *sym) |
238 | { | |
239 | if (sym->name && !regexec(&parent_regex, sym->name, 0, NULL, 0)) | |
240 | return 1; | |
241 | ||
242 | return 0; | |
243 | } | |
244 | ||
1b3a0e95 FW |
245 | int perf_session__resolve_callchain(struct perf_session *self, |
246 | struct thread *thread, | |
247 | struct ip_callchain *chain, | |
248 | struct symbol **parent) | |
a328626b ACM |
249 | { |
250 | u8 cpumode = PERF_RECORD_MISC_USER; | |
a328626b | 251 | unsigned int i; |
1b3a0e95 | 252 | int err; |
a328626b | 253 | |
1b3a0e95 | 254 | callchain_cursor_reset(&self->callchain_cursor); |
a328626b ACM |
255 | |
256 | for (i = 0; i < chain->nr; i++) { | |
257 | u64 ip = chain->ips[i]; | |
258 | struct addr_location al; | |
259 | ||
260 | if (ip >= PERF_CONTEXT_MAX) { | |
261 | switch (ip) { | |
262 | case PERF_CONTEXT_HV: | |
263 | cpumode = PERF_RECORD_MISC_HYPERVISOR; break; | |
264 | case PERF_CONTEXT_KERNEL: | |
265 | cpumode = PERF_RECORD_MISC_KERNEL; break; | |
266 | case PERF_CONTEXT_USER: | |
267 | cpumode = PERF_RECORD_MISC_USER; break; | |
268 | default: | |
269 | break; | |
270 | } | |
271 | continue; | |
272 | } | |
273 | ||
a1645ce1 | 274 | al.filtered = false; |
a328626b | 275 | thread__find_addr_location(thread, self, cpumode, |
a1645ce1 | 276 | MAP__FUNCTION, thread->pid, ip, &al, NULL); |
a328626b ACM |
277 | if (al.sym != NULL) { |
278 | if (sort__has_parent && !*parent && | |
279 | symbol__match_parent_regex(al.sym)) | |
280 | *parent = al.sym; | |
d599db3f | 281 | if (!symbol_conf.use_callchain) |
a328626b | 282 | break; |
a328626b | 283 | } |
1b3a0e95 FW |
284 | |
285 | err = callchain_cursor_append(&self->callchain_cursor, | |
286 | ip, al.map, al.sym); | |
287 | if (err) | |
288 | return err; | |
a328626b ACM |
289 | } |
290 | ||
1b3a0e95 | 291 | return 0; |
a328626b | 292 | } |
06aae590 | 293 | |
640c03ce ACM |
294 | static int process_event_synth_stub(event_t *event __used, |
295 | struct perf_session *session __used) | |
296 | { | |
297 | dump_printf(": unhandled!\n"); | |
298 | return 0; | |
299 | } | |
300 | ||
06aae590 | 301 | static int process_event_stub(event_t *event __used, |
640c03ce | 302 | struct sample_data *sample __used, |
06aae590 ACM |
303 | struct perf_session *session __used) |
304 | { | |
305 | dump_printf(": unhandled!\n"); | |
306 | return 0; | |
307 | } | |
308 | ||
d6b17beb FW |
309 | static int process_finished_round_stub(event_t *event __used, |
310 | struct perf_session *session __used, | |
311 | struct perf_event_ops *ops __used) | |
312 | { | |
313 | dump_printf(": unhandled!\n"); | |
314 | return 0; | |
315 | } | |
316 | ||
317 | static int process_finished_round(event_t *event, | |
318 | struct perf_session *session, | |
319 | struct perf_event_ops *ops); | |
320 | ||
06aae590 ACM |
321 | static void perf_event_ops__fill_defaults(struct perf_event_ops *handler) |
322 | { | |
55aa640f ACM |
323 | if (handler->sample == NULL) |
324 | handler->sample = process_event_stub; | |
325 | if (handler->mmap == NULL) | |
326 | handler->mmap = process_event_stub; | |
327 | if (handler->comm == NULL) | |
328 | handler->comm = process_event_stub; | |
329 | if (handler->fork == NULL) | |
330 | handler->fork = process_event_stub; | |
331 | if (handler->exit == NULL) | |
332 | handler->exit = process_event_stub; | |
333 | if (handler->lost == NULL) | |
37982ba0 | 334 | handler->lost = event__process_lost; |
55aa640f ACM |
335 | if (handler->read == NULL) |
336 | handler->read = process_event_stub; | |
337 | if (handler->throttle == NULL) | |
338 | handler->throttle = process_event_stub; | |
339 | if (handler->unthrottle == NULL) | |
340 | handler->unthrottle = process_event_stub; | |
2c46dbb5 | 341 | if (handler->attr == NULL) |
640c03ce | 342 | handler->attr = process_event_synth_stub; |
cd19a035 | 343 | if (handler->event_type == NULL) |
640c03ce | 344 | handler->event_type = process_event_synth_stub; |
9215545e | 345 | if (handler->tracing_data == NULL) |
640c03ce | 346 | handler->tracing_data = process_event_synth_stub; |
c7929e47 | 347 | if (handler->build_id == NULL) |
640c03ce | 348 | handler->build_id = process_event_synth_stub; |
d6b17beb FW |
349 | if (handler->finished_round == NULL) { |
350 | if (handler->ordered_samples) | |
351 | handler->finished_round = process_finished_round; | |
352 | else | |
353 | handler->finished_round = process_finished_round_stub; | |
354 | } | |
06aae590 ACM |
355 | } |
356 | ||
ba21594c ACM |
357 | void mem_bswap_64(void *src, int byte_size) |
358 | { | |
359 | u64 *m = src; | |
360 | ||
361 | while (byte_size > 0) { | |
362 | *m = bswap_64(*m); | |
363 | byte_size -= sizeof(u64); | |
364 | ++m; | |
365 | } | |
366 | } | |
367 | ||
368 | static void event__all64_swap(event_t *self) | |
369 | { | |
370 | struct perf_event_header *hdr = &self->header; | |
371 | mem_bswap_64(hdr + 1, self->header.size - sizeof(*hdr)); | |
372 | } | |
373 | ||
374 | static void event__comm_swap(event_t *self) | |
375 | { | |
376 | self->comm.pid = bswap_32(self->comm.pid); | |
377 | self->comm.tid = bswap_32(self->comm.tid); | |
378 | } | |
379 | ||
380 | static void event__mmap_swap(event_t *self) | |
381 | { | |
382 | self->mmap.pid = bswap_32(self->mmap.pid); | |
383 | self->mmap.tid = bswap_32(self->mmap.tid); | |
384 | self->mmap.start = bswap_64(self->mmap.start); | |
385 | self->mmap.len = bswap_64(self->mmap.len); | |
386 | self->mmap.pgoff = bswap_64(self->mmap.pgoff); | |
387 | } | |
388 | ||
389 | static void event__task_swap(event_t *self) | |
390 | { | |
391 | self->fork.pid = bswap_32(self->fork.pid); | |
392 | self->fork.tid = bswap_32(self->fork.tid); | |
393 | self->fork.ppid = bswap_32(self->fork.ppid); | |
394 | self->fork.ptid = bswap_32(self->fork.ptid); | |
395 | self->fork.time = bswap_64(self->fork.time); | |
396 | } | |
397 | ||
398 | static void event__read_swap(event_t *self) | |
399 | { | |
400 | self->read.pid = bswap_32(self->read.pid); | |
401 | self->read.tid = bswap_32(self->read.tid); | |
402 | self->read.value = bswap_64(self->read.value); | |
403 | self->read.time_enabled = bswap_64(self->read.time_enabled); | |
404 | self->read.time_running = bswap_64(self->read.time_running); | |
405 | self->read.id = bswap_64(self->read.id); | |
406 | } | |
407 | ||
2c46dbb5 TZ |
408 | static void event__attr_swap(event_t *self) |
409 | { | |
410 | size_t size; | |
411 | ||
412 | self->attr.attr.type = bswap_32(self->attr.attr.type); | |
413 | self->attr.attr.size = bswap_32(self->attr.attr.size); | |
414 | self->attr.attr.config = bswap_64(self->attr.attr.config); | |
415 | self->attr.attr.sample_period = bswap_64(self->attr.attr.sample_period); | |
416 | self->attr.attr.sample_type = bswap_64(self->attr.attr.sample_type); | |
417 | self->attr.attr.read_format = bswap_64(self->attr.attr.read_format); | |
418 | self->attr.attr.wakeup_events = bswap_32(self->attr.attr.wakeup_events); | |
419 | self->attr.attr.bp_type = bswap_32(self->attr.attr.bp_type); | |
420 | self->attr.attr.bp_addr = bswap_64(self->attr.attr.bp_addr); | |
421 | self->attr.attr.bp_len = bswap_64(self->attr.attr.bp_len); | |
422 | ||
423 | size = self->header.size; | |
424 | size -= (void *)&self->attr.id - (void *)self; | |
425 | mem_bswap_64(self->attr.id, size); | |
426 | } | |
427 | ||
cd19a035 TZ |
428 | static void event__event_type_swap(event_t *self) |
429 | { | |
430 | self->event_type.event_type.event_id = | |
431 | bswap_64(self->event_type.event_type.event_id); | |
432 | } | |
433 | ||
9215545e TZ |
434 | static void event__tracing_data_swap(event_t *self) |
435 | { | |
436 | self->tracing_data.size = bswap_32(self->tracing_data.size); | |
437 | } | |
438 | ||
ba21594c ACM |
439 | typedef void (*event__swap_op)(event_t *self); |
440 | ||
441 | static event__swap_op event__swap_ops[] = { | |
442 | [PERF_RECORD_MMAP] = event__mmap_swap, | |
443 | [PERF_RECORD_COMM] = event__comm_swap, | |
444 | [PERF_RECORD_FORK] = event__task_swap, | |
445 | [PERF_RECORD_EXIT] = event__task_swap, | |
446 | [PERF_RECORD_LOST] = event__all64_swap, | |
447 | [PERF_RECORD_READ] = event__read_swap, | |
448 | [PERF_RECORD_SAMPLE] = event__all64_swap, | |
2c46dbb5 | 449 | [PERF_RECORD_HEADER_ATTR] = event__attr_swap, |
cd19a035 | 450 | [PERF_RECORD_HEADER_EVENT_TYPE] = event__event_type_swap, |
9215545e | 451 | [PERF_RECORD_HEADER_TRACING_DATA] = event__tracing_data_swap, |
c7929e47 | 452 | [PERF_RECORD_HEADER_BUILD_ID] = NULL, |
8dc58101 | 453 | [PERF_RECORD_HEADER_MAX] = NULL, |
ba21594c ACM |
454 | }; |
455 | ||
c61e52ee FW |
456 | struct sample_queue { |
457 | u64 timestamp; | |
e4c2df13 | 458 | u64 file_offset; |
28990f75 | 459 | event_t *event; |
c61e52ee FW |
460 | struct list_head list; |
461 | }; | |
462 | ||
020bb75a TG |
463 | static void perf_session_free_sample_buffers(struct perf_session *session) |
464 | { | |
465 | struct ordered_samples *os = &session->ordered_samples; | |
466 | ||
5c891f38 | 467 | while (!list_empty(&os->to_free)) { |
020bb75a TG |
468 | struct sample_queue *sq; |
469 | ||
5c891f38 | 470 | sq = list_entry(os->to_free.next, struct sample_queue, list); |
020bb75a TG |
471 | list_del(&sq->list); |
472 | free(sq); | |
473 | } | |
474 | } | |
475 | ||
cbf41645 TG |
476 | static int perf_session_deliver_event(struct perf_session *session, |
477 | event_t *event, | |
478 | struct sample_data *sample, | |
f74725dc TG |
479 | struct perf_event_ops *ops, |
480 | u64 file_offset); | |
cbf41645 | 481 | |
c61e52ee FW |
482 | static void flush_sample_queue(struct perf_session *s, |
483 | struct perf_event_ops *ops) | |
484 | { | |
a1225dec TG |
485 | struct ordered_samples *os = &s->ordered_samples; |
486 | struct list_head *head = &os->samples; | |
c61e52ee | 487 | struct sample_queue *tmp, *iter; |
640c03ce | 488 | struct sample_data sample; |
a1225dec TG |
489 | u64 limit = os->next_flush; |
490 | u64 last_ts = os->last_sample ? os->last_sample->timestamp : 0ULL; | |
c61e52ee | 491 | |
d6b17beb | 492 | if (!ops->ordered_samples || !limit) |
c61e52ee FW |
493 | return; |
494 | ||
495 | list_for_each_entry_safe(iter, tmp, head, list) { | |
496 | if (iter->timestamp > limit) | |
a1225dec | 497 | break; |
c61e52ee | 498 | |
d0dd74e8 | 499 | perf_session__parse_sample(s, iter->event, &sample); |
f74725dc TG |
500 | perf_session_deliver_event(s, iter->event, &sample, ops, |
501 | iter->file_offset); | |
c61e52ee | 502 | |
a1225dec | 503 | os->last_flush = iter->timestamp; |
c61e52ee | 504 | list_del(&iter->list); |
020bb75a | 505 | list_add(&iter->list, &os->sample_cache); |
c61e52ee | 506 | } |
a1225dec TG |
507 | |
508 | if (list_empty(head)) { | |
509 | os->last_sample = NULL; | |
510 | } else if (last_ts <= limit) { | |
511 | os->last_sample = | |
512 | list_entry(head->prev, struct sample_queue, list); | |
513 | } | |
c61e52ee FW |
514 | } |
515 | ||
d6b17beb FW |
516 | /* |
517 | * When perf record finishes a pass on every buffers, it records this pseudo | |
518 | * event. | |
519 | * We record the max timestamp t found in the pass n. | |
520 | * Assuming these timestamps are monotonic across cpus, we know that if | |
521 | * a buffer still has events with timestamps below t, they will be all | |
522 | * available and then read in the pass n + 1. | |
523 | * Hence when we start to read the pass n + 2, we can safely flush every | |
524 | * events with timestamps below t. | |
525 | * | |
526 | * ============ PASS n ================= | |
527 | * CPU 0 | CPU 1 | |
528 | * | | |
529 | * cnt1 timestamps | cnt2 timestamps | |
530 | * 1 | 2 | |
531 | * 2 | 3 | |
532 | * - | 4 <--- max recorded | |
533 | * | |
534 | * ============ PASS n + 1 ============== | |
535 | * CPU 0 | CPU 1 | |
536 | * | | |
537 | * cnt1 timestamps | cnt2 timestamps | |
538 | * 3 | 5 | |
539 | * 4 | 6 | |
540 | * 5 | 7 <---- max recorded | |
541 | * | |
542 | * Flush every events below timestamp 4 | |
543 | * | |
544 | * ============ PASS n + 2 ============== | |
545 | * CPU 0 | CPU 1 | |
546 | * | | |
547 | * cnt1 timestamps | cnt2 timestamps | |
548 | * 6 | 8 | |
549 | * 7 | 9 | |
550 | * - | 10 | |
551 | * | |
552 | * Flush every events below timestamp 7 | |
553 | * etc... | |
554 | */ | |
555 | static int process_finished_round(event_t *event __used, | |
556 | struct perf_session *session, | |
557 | struct perf_event_ops *ops) | |
558 | { | |
559 | flush_sample_queue(session, ops); | |
560 | session->ordered_samples.next_flush = session->ordered_samples.max_timestamp; | |
561 | ||
562 | return 0; | |
563 | } | |
564 | ||
c61e52ee | 565 | /* The queue is ordered by time */ |
cbf41645 | 566 | static void __queue_event(struct sample_queue *new, struct perf_session *s) |
c61e52ee | 567 | { |
a1225dec TG |
568 | struct ordered_samples *os = &s->ordered_samples; |
569 | struct sample_queue *sample = os->last_sample; | |
570 | u64 timestamp = new->timestamp; | |
571 | struct list_head *p; | |
c61e52ee | 572 | |
a1225dec | 573 | os->last_sample = new; |
c61e52ee | 574 | |
a1225dec TG |
575 | if (!sample) { |
576 | list_add(&new->list, &os->samples); | |
577 | os->max_timestamp = timestamp; | |
c61e52ee FW |
578 | return; |
579 | } | |
580 | ||
581 | /* | |
a1225dec TG |
582 | * last_sample might point to some random place in the list as it's |
583 | * the last queued event. We expect that the new event is close to | |
584 | * this. | |
c61e52ee | 585 | */ |
a1225dec TG |
586 | if (sample->timestamp <= timestamp) { |
587 | while (sample->timestamp <= timestamp) { | |
588 | p = sample->list.next; | |
589 | if (p == &os->samples) { | |
590 | list_add_tail(&new->list, &os->samples); | |
591 | os->max_timestamp = timestamp; | |
592 | return; | |
593 | } | |
594 | sample = list_entry(p, struct sample_queue, list); | |
595 | } | |
596 | list_add_tail(&new->list, &sample->list); | |
597 | } else { | |
598 | while (sample->timestamp > timestamp) { | |
599 | p = sample->list.prev; | |
600 | if (p == &os->samples) { | |
601 | list_add(&new->list, &os->samples); | |
602 | return; | |
603 | } | |
604 | sample = list_entry(p, struct sample_queue, list); | |
605 | } | |
606 | list_add(&new->list, &sample->list); | |
607 | } | |
c61e52ee FW |
608 | } |
609 | ||
5c891f38 TG |
610 | #define MAX_SAMPLE_BUFFER (64 * 1024 / sizeof(struct sample_queue)) |
611 | ||
cbf41645 | 612 | static int perf_session_queue_event(struct perf_session *s, event_t *event, |
e4c2df13 | 613 | struct sample_data *data, u64 file_offset) |
c61e52ee | 614 | { |
5c891f38 TG |
615 | struct ordered_samples *os = &s->ordered_samples; |
616 | struct list_head *sc = &os->sample_cache; | |
c61e52ee FW |
617 | u64 timestamp = data->time; |
618 | struct sample_queue *new; | |
c61e52ee | 619 | |
79a14c1f | 620 | if (!timestamp || timestamp == ~0ULL) |
cbf41645 TG |
621 | return -ETIME; |
622 | ||
c61e52ee FW |
623 | if (timestamp < s->ordered_samples.last_flush) { |
624 | printf("Warning: Timestamp below last timeslice flush\n"); | |
625 | return -EINVAL; | |
626 | } | |
627 | ||
020bb75a TG |
628 | if (!list_empty(sc)) { |
629 | new = list_entry(sc->next, struct sample_queue, list); | |
630 | list_del(&new->list); | |
5c891f38 TG |
631 | } else if (os->sample_buffer) { |
632 | new = os->sample_buffer + os->sample_buffer_idx; | |
633 | if (++os->sample_buffer_idx == MAX_SAMPLE_BUFFER) | |
634 | os->sample_buffer = NULL; | |
020bb75a | 635 | } else { |
5c891f38 TG |
636 | os->sample_buffer = malloc(MAX_SAMPLE_BUFFER * sizeof(*new)); |
637 | if (!os->sample_buffer) | |
020bb75a | 638 | return -ENOMEM; |
5c891f38 TG |
639 | list_add(&os->sample_buffer->list, &os->to_free); |
640 | os->sample_buffer_idx = 2; | |
641 | new = os->sample_buffer + 1; | |
020bb75a | 642 | } |
c61e52ee FW |
643 | |
644 | new->timestamp = timestamp; | |
e4c2df13 | 645 | new->file_offset = file_offset; |
fe174207 | 646 | new->event = event; |
c61e52ee | 647 | |
cbf41645 | 648 | __queue_event(new, s); |
640c03ce | 649 | |
640c03ce ACM |
650 | return 0; |
651 | } | |
c61e52ee | 652 | |
ddbc24b7 | 653 | static void callchain__printf(struct sample_data *sample) |
640c03ce ACM |
654 | { |
655 | unsigned int i; | |
c61e52ee | 656 | |
9486aa38 | 657 | printf("... chain: nr:%" PRIu64 "\n", sample->callchain->nr); |
640c03ce ACM |
658 | |
659 | for (i = 0; i < sample->callchain->nr; i++) | |
9486aa38 ACM |
660 | printf("..... %2d: %016" PRIx64 "\n", |
661 | i, sample->callchain->ips[i]); | |
c61e52ee FW |
662 | } |
663 | ||
9c90a61c ACM |
664 | static void perf_session__print_tstamp(struct perf_session *session, |
665 | event_t *event, | |
666 | struct sample_data *sample) | |
667 | { | |
668 | if (event->header.type != PERF_RECORD_SAMPLE && | |
669 | !session->sample_id_all) { | |
670 | fputs("-1 -1 ", stdout); | |
671 | return; | |
672 | } | |
673 | ||
674 | if ((session->sample_type & PERF_SAMPLE_CPU)) | |
675 | printf("%u ", sample->cpu); | |
676 | ||
677 | if (session->sample_type & PERF_SAMPLE_TIME) | |
9486aa38 | 678 | printf("%" PRIu64 " ", sample->time); |
9c90a61c ACM |
679 | } |
680 | ||
9aefcab0 TG |
681 | static void dump_event(struct perf_session *session, event_t *event, |
682 | u64 file_offset, struct sample_data *sample) | |
683 | { | |
684 | if (!dump_trace) | |
685 | return; | |
686 | ||
9486aa38 ACM |
687 | printf("\n%#" PRIx64 " [%#x]: event: %d\n", |
688 | file_offset, event->header.size, event->header.type); | |
9aefcab0 TG |
689 | |
690 | trace_event(event); | |
691 | ||
692 | if (sample) | |
693 | perf_session__print_tstamp(session, event, sample); | |
694 | ||
9486aa38 ACM |
695 | printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset, |
696 | event->header.size, event__get_event_name(event->header.type)); | |
9aefcab0 TG |
697 | } |
698 | ||
699 | static void dump_sample(struct perf_session *session, event_t *event, | |
700 | struct sample_data *sample) | |
701 | { | |
ddbc24b7 ACM |
702 | if (!dump_trace) |
703 | return; | |
704 | ||
9486aa38 ACM |
705 | printf("(IP, %d): %d/%d: %#" PRIx64 " period: %" PRIu64 "\n", |
706 | event->header.misc, sample->pid, sample->tid, sample->ip, | |
707 | sample->period); | |
9aefcab0 TG |
708 | |
709 | if (session->sample_type & PERF_SAMPLE_CALLCHAIN) | |
ddbc24b7 | 710 | callchain__printf(sample); |
9aefcab0 TG |
711 | } |
712 | ||
cbf41645 TG |
713 | static int perf_session_deliver_event(struct perf_session *session, |
714 | event_t *event, | |
715 | struct sample_data *sample, | |
f74725dc | 716 | struct perf_event_ops *ops, |
532e7269 | 717 | u64 file_offset) |
cbf41645 | 718 | { |
532e7269 TG |
719 | dump_event(session, event, file_offset, sample); |
720 | ||
cbf41645 TG |
721 | switch (event->header.type) { |
722 | case PERF_RECORD_SAMPLE: | |
532e7269 | 723 | dump_sample(session, event, sample); |
cbf41645 TG |
724 | return ops->sample(event, sample, session); |
725 | case PERF_RECORD_MMAP: | |
726 | return ops->mmap(event, sample, session); | |
727 | case PERF_RECORD_COMM: | |
728 | return ops->comm(event, sample, session); | |
729 | case PERF_RECORD_FORK: | |
730 | return ops->fork(event, sample, session); | |
731 | case PERF_RECORD_EXIT: | |
732 | return ops->exit(event, sample, session); | |
733 | case PERF_RECORD_LOST: | |
734 | return ops->lost(event, sample, session); | |
735 | case PERF_RECORD_READ: | |
736 | return ops->read(event, sample, session); | |
737 | case PERF_RECORD_THROTTLE: | |
738 | return ops->throttle(event, sample, session); | |
739 | case PERF_RECORD_UNTHROTTLE: | |
740 | return ops->unthrottle(event, sample, session); | |
741 | default: | |
742 | ++session->hists.stats.nr_unknown_events; | |
743 | return -1; | |
744 | } | |
745 | } | |
746 | ||
3dfc2c0a TG |
747 | static int perf_session__preprocess_sample(struct perf_session *session, |
748 | event_t *event, struct sample_data *sample) | |
749 | { | |
750 | if (event->header.type != PERF_RECORD_SAMPLE || | |
751 | !(session->sample_type & PERF_SAMPLE_CALLCHAIN)) | |
752 | return 0; | |
753 | ||
754 | if (!ip_callchain__valid(sample->callchain, event)) { | |
755 | pr_debug("call-chain problem with event, skipping it.\n"); | |
756 | ++session->hists.stats.nr_invalid_chains; | |
757 | session->hists.stats.total_invalid_chains += sample->period; | |
758 | return -EINVAL; | |
759 | } | |
760 | return 0; | |
761 | } | |
762 | ||
ba74f064 TG |
763 | static int perf_session__process_user_event(struct perf_session *session, event_t *event, |
764 | struct perf_event_ops *ops, u64 file_offset) | |
06aae590 | 765 | { |
ba74f064 | 766 | dump_event(session, event, file_offset, NULL); |
06aae590 | 767 | |
cbf41645 | 768 | /* These events are processed right away */ |
06aae590 | 769 | switch (event->header.type) { |
2c46dbb5 | 770 | case PERF_RECORD_HEADER_ATTR: |
cbf41645 | 771 | return ops->attr(event, session); |
cd19a035 | 772 | case PERF_RECORD_HEADER_EVENT_TYPE: |
cbf41645 | 773 | return ops->event_type(event, session); |
9215545e TZ |
774 | case PERF_RECORD_HEADER_TRACING_DATA: |
775 | /* setup for reading amidst mmap */ | |
cbf41645 TG |
776 | lseek(session->fd, file_offset, SEEK_SET); |
777 | return ops->tracing_data(event, session); | |
c7929e47 | 778 | case PERF_RECORD_HEADER_BUILD_ID: |
cbf41645 | 779 | return ops->build_id(event, session); |
d6b17beb | 780 | case PERF_RECORD_FINISHED_ROUND: |
cbf41645 | 781 | return ops->finished_round(event, session, ops); |
06aae590 | 782 | default: |
ba74f064 | 783 | return -EINVAL; |
06aae590 | 784 | } |
ba74f064 TG |
785 | } |
786 | ||
787 | static int perf_session__process_event(struct perf_session *session, | |
788 | event_t *event, | |
789 | struct perf_event_ops *ops, | |
790 | u64 file_offset) | |
791 | { | |
792 | struct sample_data sample; | |
793 | int ret; | |
794 | ||
795 | if (session->header.needs_swap && event__swap_ops[event->header.type]) | |
796 | event__swap_ops[event->header.type](event); | |
797 | ||
798 | if (event->header.type >= PERF_RECORD_HEADER_MAX) | |
799 | return -EINVAL; | |
800 | ||
801 | hists__inc_nr_events(&session->hists, event->header.type); | |
802 | ||
803 | if (event->header.type >= PERF_RECORD_USER_TYPE_START) | |
804 | return perf_session__process_user_event(session, event, ops, file_offset); | |
cbf41645 | 805 | |
3dfc2c0a TG |
806 | /* |
807 | * For all kernel events we get the sample data | |
808 | */ | |
d0dd74e8 | 809 | perf_session__parse_sample(session, event, &sample); |
3dfc2c0a TG |
810 | |
811 | /* Preprocess sample records - precheck callchains */ | |
812 | if (perf_session__preprocess_sample(session, event, &sample)) | |
813 | return 0; | |
814 | ||
cbf41645 | 815 | if (ops->ordered_samples) { |
e4c2df13 TG |
816 | ret = perf_session_queue_event(session, event, &sample, |
817 | file_offset); | |
cbf41645 TG |
818 | if (ret != -ETIME) |
819 | return ret; | |
820 | } | |
821 | ||
f74725dc TG |
822 | return perf_session_deliver_event(session, event, &sample, ops, |
823 | file_offset); | |
06aae590 ACM |
824 | } |
825 | ||
ba21594c ACM |
826 | void perf_event_header__bswap(struct perf_event_header *self) |
827 | { | |
828 | self->type = bswap_32(self->type); | |
829 | self->misc = bswap_16(self->misc); | |
830 | self->size = bswap_16(self->size); | |
831 | } | |
832 | ||
06aae590 ACM |
833 | static struct thread *perf_session__register_idle_thread(struct perf_session *self) |
834 | { | |
835 | struct thread *thread = perf_session__findnew(self, 0); | |
836 | ||
837 | if (thread == NULL || thread__set_comm(thread, "swapper")) { | |
838 | pr_err("problem inserting idle task.\n"); | |
839 | thread = NULL; | |
840 | } | |
841 | ||
842 | return thread; | |
843 | } | |
844 | ||
11095994 ACM |
845 | static void perf_session__warn_about_errors(const struct perf_session *session, |
846 | const struct perf_event_ops *ops) | |
847 | { | |
848 | if (ops->lost == event__process_lost && | |
849 | session->hists.stats.total_lost != 0) { | |
9486aa38 ACM |
850 | ui__warning("Processed %" PRIu64 " events and LOST %" PRIu64 |
851 | "!\n\nCheck IO/CPU overload!\n\n", | |
11095994 ACM |
852 | session->hists.stats.total_period, |
853 | session->hists.stats.total_lost); | |
854 | } | |
855 | ||
856 | if (session->hists.stats.nr_unknown_events != 0) { | |
857 | ui__warning("Found %u unknown events!\n\n" | |
858 | "Is this an older tool processing a perf.data " | |
859 | "file generated by a more recent tool?\n\n" | |
860 | "If that is not the case, consider " | |
861 | "reporting to linux-kernel@vger.kernel.org.\n\n", | |
862 | session->hists.stats.nr_unknown_events); | |
863 | } | |
864 | ||
865 | if (session->hists.stats.nr_invalid_chains != 0) { | |
866 | ui__warning("Found invalid callchains!\n\n" | |
867 | "%u out of %u events were discarded for this reason.\n\n" | |
868 | "Consider reporting to linux-kernel@vger.kernel.org.\n\n", | |
869 | session->hists.stats.nr_invalid_chains, | |
870 | session->hists.stats.nr_events[PERF_RECORD_SAMPLE]); | |
871 | } | |
872 | } | |
873 | ||
8dc58101 TZ |
874 | #define session_done() (*(volatile int *)(&session_done)) |
875 | volatile int session_done; | |
876 | ||
877 | static int __perf_session__process_pipe_events(struct perf_session *self, | |
878 | struct perf_event_ops *ops) | |
879 | { | |
880 | event_t event; | |
881 | uint32_t size; | |
882 | int skip = 0; | |
883 | u64 head; | |
884 | int err; | |
885 | void *p; | |
886 | ||
887 | perf_event_ops__fill_defaults(ops); | |
888 | ||
889 | head = 0; | |
890 | more: | |
1e7972cc | 891 | err = readn(self->fd, &event, sizeof(struct perf_event_header)); |
8dc58101 TZ |
892 | if (err <= 0) { |
893 | if (err == 0) | |
894 | goto done; | |
895 | ||
896 | pr_err("failed to read event header\n"); | |
897 | goto out_err; | |
898 | } | |
899 | ||
900 | if (self->header.needs_swap) | |
901 | perf_event_header__bswap(&event.header); | |
902 | ||
903 | size = event.header.size; | |
904 | if (size == 0) | |
905 | size = 8; | |
906 | ||
907 | p = &event; | |
908 | p += sizeof(struct perf_event_header); | |
909 | ||
794e43b5 | 910 | if (size - sizeof(struct perf_event_header)) { |
1e7972cc | 911 | err = readn(self->fd, p, size - sizeof(struct perf_event_header)); |
794e43b5 TZ |
912 | if (err <= 0) { |
913 | if (err == 0) { | |
914 | pr_err("unexpected end of event stream\n"); | |
915 | goto done; | |
916 | } | |
8dc58101 | 917 | |
794e43b5 TZ |
918 | pr_err("failed to read event data\n"); |
919 | goto out_err; | |
920 | } | |
8dc58101 TZ |
921 | } |
922 | ||
923 | if (size == 0 || | |
0331ee0c | 924 | (skip = perf_session__process_event(self, &event, ops, head)) < 0) { |
9486aa38 | 925 | dump_printf("%#" PRIx64 " [%#x]: skipping unknown header type: %d\n", |
8dc58101 TZ |
926 | head, event.header.size, event.header.type); |
927 | /* | |
928 | * assume we lost track of the stream, check alignment, and | |
929 | * increment a single u64 in the hope to catch on again 'soon'. | |
930 | */ | |
931 | if (unlikely(head & 7)) | |
932 | head &= ~7ULL; | |
933 | ||
934 | size = 8; | |
935 | } | |
936 | ||
937 | head += size; | |
938 | ||
8dc58101 TZ |
939 | if (skip > 0) |
940 | head += skip; | |
941 | ||
942 | if (!session_done()) | |
943 | goto more; | |
944 | done: | |
945 | err = 0; | |
946 | out_err: | |
11095994 | 947 | perf_session__warn_about_errors(self, ops); |
020bb75a | 948 | perf_session_free_sample_buffers(self); |
8dc58101 TZ |
949 | return err; |
950 | } | |
951 | ||
0331ee0c | 952 | int __perf_session__process_events(struct perf_session *session, |
6122e4e4 ACM |
953 | u64 data_offset, u64 data_size, |
954 | u64 file_size, struct perf_event_ops *ops) | |
06aae590 | 955 | { |
55b44629 | 956 | u64 head, page_offset, file_offset, file_pos, progress_next; |
fe174207 | 957 | int err, mmap_prot, mmap_flags, map_idx = 0; |
0331ee0c | 958 | struct ui_progress *progress; |
55b44629 | 959 | size_t page_size, mmap_size; |
fe174207 | 960 | char *buf, *mmaps[8]; |
06aae590 ACM |
961 | event_t *event; |
962 | uint32_t size; | |
0331ee0c | 963 | |
06aae590 ACM |
964 | perf_event_ops__fill_defaults(ops); |
965 | ||
1b75962e | 966 | page_size = sysconf(_SC_PAGESIZE); |
06aae590 | 967 | |
0331ee0c TG |
968 | page_offset = page_size * (data_offset / page_size); |
969 | file_offset = page_offset; | |
970 | head = data_offset - page_offset; | |
06aae590 | 971 | |
d6513281 TG |
972 | if (data_offset + data_size < file_size) |
973 | file_size = data_offset + data_size; | |
974 | ||
55b44629 TG |
975 | progress_next = file_size / 16; |
976 | progress = ui_progress__new("Processing events...", file_size); | |
977 | if (progress == NULL) | |
978 | return -1; | |
979 | ||
980 | mmap_size = session->mmap_window; | |
981 | if (mmap_size > file_size) | |
982 | mmap_size = file_size; | |
983 | ||
fe174207 TG |
984 | memset(mmaps, 0, sizeof(mmaps)); |
985 | ||
ba21594c ACM |
986 | mmap_prot = PROT_READ; |
987 | mmap_flags = MAP_SHARED; | |
988 | ||
0331ee0c | 989 | if (session->header.needs_swap) { |
ba21594c ACM |
990 | mmap_prot |= PROT_WRITE; |
991 | mmap_flags = MAP_PRIVATE; | |
992 | } | |
06aae590 | 993 | remap: |
55b44629 TG |
994 | buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, session->fd, |
995 | file_offset); | |
06aae590 ACM |
996 | if (buf == MAP_FAILED) { |
997 | pr_err("failed to mmap file\n"); | |
998 | err = -errno; | |
999 | goto out_err; | |
1000 | } | |
fe174207 TG |
1001 | mmaps[map_idx] = buf; |
1002 | map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1); | |
d6513281 | 1003 | file_pos = file_offset + head; |
06aae590 ACM |
1004 | |
1005 | more: | |
1006 | event = (event_t *)(buf + head); | |
1007 | ||
0331ee0c | 1008 | if (session->header.needs_swap) |
ba21594c | 1009 | perf_event_header__bswap(&event->header); |
06aae590 ACM |
1010 | size = event->header.size; |
1011 | if (size == 0) | |
1012 | size = 8; | |
1013 | ||
3d03e2ea | 1014 | if (head + event->header.size > mmap_size) { |
fe174207 TG |
1015 | if (mmaps[map_idx]) { |
1016 | munmap(mmaps[map_idx], mmap_size); | |
1017 | mmaps[map_idx] = NULL; | |
1018 | } | |
06aae590 | 1019 | |
0331ee0c TG |
1020 | page_offset = page_size * (head / page_size); |
1021 | file_offset += page_offset; | |
1022 | head -= page_offset; | |
06aae590 ACM |
1023 | goto remap; |
1024 | } | |
1025 | ||
1026 | size = event->header.size; | |
1027 | ||
d6513281 TG |
1028 | if (size == 0 || |
1029 | perf_session__process_event(session, event, ops, file_pos) < 0) { | |
9486aa38 | 1030 | dump_printf("%#" PRIx64 " [%#x]: skipping unknown header type: %d\n", |
0331ee0c | 1031 | file_offset + head, event->header.size, |
06aae590 ACM |
1032 | event->header.type); |
1033 | /* | |
1034 | * assume we lost track of the stream, check alignment, and | |
1035 | * increment a single u64 in the hope to catch on again 'soon'. | |
1036 | */ | |
1037 | if (unlikely(head & 7)) | |
1038 | head &= ~7ULL; | |
1039 | ||
1040 | size = 8; | |
1041 | } | |
1042 | ||
1043 | head += size; | |
d6513281 | 1044 | file_pos += size; |
06aae590 | 1045 | |
55b44629 TG |
1046 | if (file_pos >= progress_next) { |
1047 | progress_next += file_size / 16; | |
1048 | ui_progress__update(progress, file_pos); | |
1049 | } | |
1050 | ||
d6513281 | 1051 | if (file_pos < file_size) |
06aae590 | 1052 | goto more; |
d6513281 | 1053 | |
06aae590 | 1054 | err = 0; |
c61e52ee | 1055 | /* do the final flush for ordered samples */ |
0331ee0c TG |
1056 | session->ordered_samples.next_flush = ULLONG_MAX; |
1057 | flush_sample_queue(session, ops); | |
06aae590 | 1058 | out_err: |
5f4d3f88 | 1059 | ui_progress__delete(progress); |
11095994 | 1060 | perf_session__warn_about_errors(session, ops); |
020bb75a | 1061 | perf_session_free_sample_buffers(session); |
06aae590 ACM |
1062 | return err; |
1063 | } | |
27295592 | 1064 | |
6122e4e4 ACM |
1065 | int perf_session__process_events(struct perf_session *self, |
1066 | struct perf_event_ops *ops) | |
1067 | { | |
1068 | int err; | |
1069 | ||
1070 | if (perf_session__register_idle_thread(self) == NULL) | |
1071 | return -ENOMEM; | |
1072 | ||
8dc58101 TZ |
1073 | if (!self->fd_pipe) |
1074 | err = __perf_session__process_events(self, | |
1075 | self->header.data_offset, | |
1076 | self->header.data_size, | |
1077 | self->size, ops); | |
1078 | else | |
1079 | err = __perf_session__process_pipe_events(self, ops); | |
88ca895d | 1080 | |
6122e4e4 ACM |
1081 | return err; |
1082 | } | |
1083 | ||
d549c769 | 1084 | bool perf_session__has_traces(struct perf_session *self, const char *msg) |
27295592 ACM |
1085 | { |
1086 | if (!(self->sample_type & PERF_SAMPLE_RAW)) { | |
d549c769 ACM |
1087 | pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg); |
1088 | return false; | |
27295592 ACM |
1089 | } |
1090 | ||
d549c769 | 1091 | return true; |
27295592 | 1092 | } |
56b03f3c | 1093 | |
a1645ce1 | 1094 | int perf_session__set_kallsyms_ref_reloc_sym(struct map **maps, |
56b03f3c ACM |
1095 | const char *symbol_name, |
1096 | u64 addr) | |
1097 | { | |
1098 | char *bracket; | |
9de89fe7 | 1099 | enum map_type i; |
a1645ce1 ZY |
1100 | struct ref_reloc_sym *ref; |
1101 | ||
1102 | ref = zalloc(sizeof(struct ref_reloc_sym)); | |
1103 | if (ref == NULL) | |
1104 | return -ENOMEM; | |
56b03f3c | 1105 | |
a1645ce1 ZY |
1106 | ref->name = strdup(symbol_name); |
1107 | if (ref->name == NULL) { | |
1108 | free(ref); | |
56b03f3c | 1109 | return -ENOMEM; |
a1645ce1 | 1110 | } |
56b03f3c | 1111 | |
a1645ce1 | 1112 | bracket = strchr(ref->name, ']'); |
56b03f3c ACM |
1113 | if (bracket) |
1114 | *bracket = '\0'; | |
1115 | ||
a1645ce1 | 1116 | ref->addr = addr; |
9de89fe7 ACM |
1117 | |
1118 | for (i = 0; i < MAP__NR_TYPES; ++i) { | |
a1645ce1 ZY |
1119 | struct kmap *kmap = map__kmap(maps[i]); |
1120 | kmap->ref_reloc_sym = ref; | |
9de89fe7 ACM |
1121 | } |
1122 | ||
56b03f3c ACM |
1123 | return 0; |
1124 | } | |
1f626bc3 ACM |
1125 | |
1126 | size_t perf_session__fprintf_dsos(struct perf_session *self, FILE *fp) | |
1127 | { | |
1128 | return __dsos__fprintf(&self->host_machine.kernel_dsos, fp) + | |
1129 | __dsos__fprintf(&self->host_machine.user_dsos, fp) + | |
1130 | machines__fprintf_dsos(&self->machines, fp); | |
1131 | } | |
f869097e ACM |
1132 | |
1133 | size_t perf_session__fprintf_dsos_buildid(struct perf_session *self, FILE *fp, | |
1134 | bool with_hits) | |
1135 | { | |
1136 | size_t ret = machine__fprintf_dsos_buildid(&self->host_machine, fp, with_hits); | |
1137 | return ret + machines__fprintf_dsos_buildid(&self->machines, fp, with_hits); | |
1138 | } |