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 | 14 | #include "util.h" |
5d67be97 | 15 | #include "cpumap.h" |
94c744b6 ACM |
16 | |
17 | static int perf_session__open(struct perf_session *self, bool force) | |
18 | { | |
19 | struct stat input_stat; | |
20 | ||
8dc58101 TZ |
21 | if (!strcmp(self->filename, "-")) { |
22 | self->fd_pipe = true; | |
23 | self->fd = STDIN_FILENO; | |
24 | ||
a91e5431 | 25 | if (perf_session__read_header(self, self->fd) < 0) |
8dc58101 TZ |
26 | pr_err("incompatible file format"); |
27 | ||
28 | return 0; | |
29 | } | |
30 | ||
f887f301 | 31 | self->fd = open(self->filename, O_RDONLY); |
94c744b6 | 32 | if (self->fd < 0) { |
0f2c3de2 AI |
33 | int err = errno; |
34 | ||
35 | pr_err("failed to open %s: %s", self->filename, strerror(err)); | |
36 | if (err == ENOENT && !strcmp(self->filename, "perf.data")) | |
94c744b6 ACM |
37 | pr_err(" (try 'perf record' first)"); |
38 | pr_err("\n"); | |
39 | return -errno; | |
40 | } | |
41 | ||
42 | if (fstat(self->fd, &input_stat) < 0) | |
43 | goto out_close; | |
44 | ||
45 | if (!force && input_stat.st_uid && (input_stat.st_uid != geteuid())) { | |
46 | pr_err("file %s not owned by current user or root\n", | |
47 | self->filename); | |
48 | goto out_close; | |
49 | } | |
50 | ||
51 | if (!input_stat.st_size) { | |
52 | pr_info("zero-sized file (%s), nothing to do!\n", | |
53 | self->filename); | |
54 | goto out_close; | |
55 | } | |
56 | ||
a91e5431 | 57 | if (perf_session__read_header(self, self->fd) < 0) { |
94c744b6 ACM |
58 | pr_err("incompatible file format"); |
59 | goto out_close; | |
60 | } | |
61 | ||
c2a70653 ACM |
62 | if (!perf_evlist__valid_sample_type(self->evlist)) { |
63 | pr_err("non matching sample_type"); | |
64 | goto out_close; | |
65 | } | |
66 | ||
67 | if (!perf_evlist__valid_sample_id_all(self->evlist)) { | |
68 | pr_err("non matching sample_id_all"); | |
69 | goto out_close; | |
70 | } | |
71 | ||
94c744b6 ACM |
72 | self->size = input_stat.st_size; |
73 | return 0; | |
74 | ||
75 | out_close: | |
76 | close(self->fd); | |
77 | self->fd = -1; | |
78 | return -1; | |
79 | } | |
80 | ||
9c90a61c | 81 | static void perf_session__id_header_size(struct perf_session *session) |
8dc58101 | 82 | { |
8d50e5b4 | 83 | struct perf_sample *data; |
9c90a61c ACM |
84 | u64 sample_type = session->sample_type; |
85 | u16 size = 0; | |
86 | ||
87 | if (!session->sample_id_all) | |
88 | goto out; | |
89 | ||
90 | if (sample_type & PERF_SAMPLE_TID) | |
91 | size += sizeof(data->tid) * 2; | |
92 | ||
93 | if (sample_type & PERF_SAMPLE_TIME) | |
94 | size += sizeof(data->time); | |
95 | ||
96 | if (sample_type & PERF_SAMPLE_ID) | |
97 | size += sizeof(data->id); | |
98 | ||
99 | if (sample_type & PERF_SAMPLE_STREAM_ID) | |
100 | size += sizeof(data->stream_id); | |
101 | ||
102 | if (sample_type & PERF_SAMPLE_CPU) | |
103 | size += sizeof(data->cpu) * 2; | |
104 | out: | |
105 | session->id_hdr_size = size; | |
106 | } | |
107 | ||
9c90a61c ACM |
108 | void perf_session__update_sample_type(struct perf_session *self) |
109 | { | |
a91e5431 | 110 | self->sample_type = perf_evlist__sample_type(self->evlist); |
c2a70653 | 111 | self->sample_size = __perf_evsel__sample_size(self->sample_type); |
a91e5431 | 112 | self->sample_id_all = perf_evlist__sample_id_all(self->evlist); |
9c90a61c ACM |
113 | perf_session__id_header_size(self); |
114 | } | |
115 | ||
a1645ce1 ZY |
116 | int perf_session__create_kernel_maps(struct perf_session *self) |
117 | { | |
d118f8ba | 118 | int ret = machine__create_kernel_maps(&self->host_machine); |
a1645ce1 | 119 | |
a1645ce1 | 120 | if (ret >= 0) |
d118f8ba | 121 | ret = machines__create_guest_kernel_maps(&self->machines); |
a1645ce1 ZY |
122 | return ret; |
123 | } | |
124 | ||
076c6e45 ACM |
125 | static void perf_session__destroy_kernel_maps(struct perf_session *self) |
126 | { | |
127 | machine__destroy_kernel_maps(&self->host_machine); | |
128 | machines__destroy_guest_kernel_maps(&self->machines); | |
129 | } | |
130 | ||
21ef97f0 IM |
131 | struct perf_session *perf_session__new(const char *filename, int mode, |
132 | bool force, bool repipe, | |
133 | struct perf_event_ops *ops) | |
94c744b6 | 134 | { |
b3165f41 | 135 | size_t len = filename ? strlen(filename) + 1 : 0; |
94c744b6 ACM |
136 | struct perf_session *self = zalloc(sizeof(*self) + len); |
137 | ||
138 | if (self == NULL) | |
139 | goto out; | |
140 | ||
94c744b6 | 141 | memcpy(self->filename, filename, len); |
b3165f41 | 142 | self->threads = RB_ROOT; |
720a3aeb | 143 | INIT_LIST_HEAD(&self->dead_threads); |
b3165f41 | 144 | self->last_match = NULL; |
55b44629 TG |
145 | /* |
146 | * On 64bit we can mmap the data file in one go. No need for tiny mmap | |
147 | * slices. On 32bit we use 32MB. | |
148 | */ | |
149 | #if BITS_PER_LONG == 64 | |
150 | self->mmap_window = ULLONG_MAX; | |
151 | #else | |
152 | self->mmap_window = 32 * 1024 * 1024ULL; | |
153 | #endif | |
23346f21 | 154 | self->machines = RB_ROOT; |
454c407e | 155 | self->repipe = repipe; |
a1225dec | 156 | INIT_LIST_HEAD(&self->ordered_samples.samples); |
020bb75a | 157 | INIT_LIST_HEAD(&self->ordered_samples.sample_cache); |
5c891f38 | 158 | INIT_LIST_HEAD(&self->ordered_samples.to_free); |
1f626bc3 | 159 | machine__init(&self->host_machine, "", HOST_KERNEL_ID); |
94c744b6 | 160 | |
64abebf7 ACM |
161 | if (mode == O_RDONLY) { |
162 | if (perf_session__open(self, force) < 0) | |
163 | goto out_delete; | |
a91e5431 | 164 | perf_session__update_sample_type(self); |
64abebf7 ACM |
165 | } else if (mode == O_WRONLY) { |
166 | /* | |
167 | * In O_RDONLY mode this will be performed when reading the | |
8115d60c | 168 | * kernel MMAP event, in perf_event__process_mmap(). |
64abebf7 ACM |
169 | */ |
170 | if (perf_session__create_kernel_maps(self) < 0) | |
171 | goto out_delete; | |
172 | } | |
d549c769 | 173 | |
21ef97f0 IM |
174 | if (ops && ops->ordering_requires_timestamps && |
175 | ops->ordered_samples && !self->sample_id_all) { | |
176 | dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n"); | |
177 | ops->ordered_samples = false; | |
178 | } | |
179 | ||
94c744b6 ACM |
180 | out: |
181 | return self; | |
4aa65636 ACM |
182 | out_delete: |
183 | perf_session__delete(self); | |
184 | return NULL; | |
94c744b6 ACM |
185 | } |
186 | ||
d65a458b ACM |
187 | static void perf_session__delete_dead_threads(struct perf_session *self) |
188 | { | |
189 | struct thread *n, *t; | |
190 | ||
191 | list_for_each_entry_safe(t, n, &self->dead_threads, node) { | |
192 | list_del(&t->node); | |
193 | thread__delete(t); | |
194 | } | |
195 | } | |
196 | ||
197 | static void perf_session__delete_threads(struct perf_session *self) | |
198 | { | |
199 | struct rb_node *nd = rb_first(&self->threads); | |
200 | ||
201 | while (nd) { | |
202 | struct thread *t = rb_entry(nd, struct thread, rb_node); | |
203 | ||
204 | rb_erase(&t->rb_node, &self->threads); | |
205 | nd = rb_next(nd); | |
206 | thread__delete(t); | |
207 | } | |
208 | } | |
209 | ||
94c744b6 ACM |
210 | void perf_session__delete(struct perf_session *self) |
211 | { | |
076c6e45 | 212 | perf_session__destroy_kernel_maps(self); |
d65a458b ACM |
213 | perf_session__delete_dead_threads(self); |
214 | perf_session__delete_threads(self); | |
215 | machine__exit(&self->host_machine); | |
94c744b6 ACM |
216 | close(self->fd); |
217 | free(self); | |
218 | } | |
a328626b | 219 | |
720a3aeb ACM |
220 | void perf_session__remove_thread(struct perf_session *self, struct thread *th) |
221 | { | |
70597f21 | 222 | self->last_match = NULL; |
720a3aeb ACM |
223 | rb_erase(&th->rb_node, &self->threads); |
224 | /* | |
225 | * We may have references to this thread, for instance in some hist_entry | |
226 | * instances, so just move them to a separate list. | |
227 | */ | |
228 | list_add_tail(&th->node, &self->dead_threads); | |
229 | } | |
230 | ||
a328626b ACM |
231 | static bool symbol__match_parent_regex(struct symbol *sym) |
232 | { | |
233 | if (sym->name && !regexec(&parent_regex, sym->name, 0, NULL, 0)) | |
234 | return 1; | |
235 | ||
236 | return 0; | |
237 | } | |
238 | ||
1b3a0e95 FW |
239 | int perf_session__resolve_callchain(struct perf_session *self, |
240 | struct thread *thread, | |
241 | struct ip_callchain *chain, | |
242 | struct symbol **parent) | |
a328626b ACM |
243 | { |
244 | u8 cpumode = PERF_RECORD_MISC_USER; | |
a328626b | 245 | unsigned int i; |
1b3a0e95 | 246 | int err; |
a328626b | 247 | |
1b3a0e95 | 248 | callchain_cursor_reset(&self->callchain_cursor); |
a328626b ACM |
249 | |
250 | for (i = 0; i < chain->nr; i++) { | |
d797fdc5 | 251 | u64 ip; |
a328626b ACM |
252 | struct addr_location al; |
253 | ||
d797fdc5 SL |
254 | if (callchain_param.order == ORDER_CALLEE) |
255 | ip = chain->ips[i]; | |
256 | else | |
257 | ip = chain->ips[chain->nr - i - 1]; | |
258 | ||
a328626b ACM |
259 | if (ip >= PERF_CONTEXT_MAX) { |
260 | switch (ip) { | |
261 | case PERF_CONTEXT_HV: | |
262 | cpumode = PERF_RECORD_MISC_HYPERVISOR; break; | |
263 | case PERF_CONTEXT_KERNEL: | |
264 | cpumode = PERF_RECORD_MISC_KERNEL; break; | |
265 | case PERF_CONTEXT_USER: | |
266 | cpumode = PERF_RECORD_MISC_USER; break; | |
267 | default: | |
268 | break; | |
269 | } | |
270 | continue; | |
271 | } | |
272 | ||
a1645ce1 | 273 | al.filtered = false; |
a328626b | 274 | thread__find_addr_location(thread, self, cpumode, |
a1645ce1 | 275 | MAP__FUNCTION, thread->pid, ip, &al, NULL); |
a328626b ACM |
276 | if (al.sym != NULL) { |
277 | if (sort__has_parent && !*parent && | |
278 | symbol__match_parent_regex(al.sym)) | |
279 | *parent = al.sym; | |
d599db3f | 280 | if (!symbol_conf.use_callchain) |
a328626b | 281 | break; |
a328626b | 282 | } |
1b3a0e95 FW |
283 | |
284 | err = callchain_cursor_append(&self->callchain_cursor, | |
285 | ip, al.map, al.sym); | |
286 | if (err) | |
287 | return err; | |
a328626b ACM |
288 | } |
289 | ||
1b3a0e95 | 290 | return 0; |
a328626b | 291 | } |
06aae590 | 292 | |
8115d60c | 293 | static int process_event_synth_stub(union perf_event *event __used, |
640c03ce ACM |
294 | struct perf_session *session __used) |
295 | { | |
296 | dump_printf(": unhandled!\n"); | |
297 | return 0; | |
298 | } | |
299 | ||
9e69c210 ACM |
300 | static int process_event_sample_stub(union perf_event *event __used, |
301 | struct perf_sample *sample __used, | |
302 | struct perf_evsel *evsel __used, | |
303 | struct perf_session *session __used) | |
304 | { | |
305 | dump_printf(": unhandled!\n"); | |
306 | return 0; | |
307 | } | |
308 | ||
8115d60c | 309 | static int process_event_stub(union perf_event *event __used, |
8d50e5b4 | 310 | struct perf_sample *sample __used, |
06aae590 ACM |
311 | struct perf_session *session __used) |
312 | { | |
313 | dump_printf(": unhandled!\n"); | |
314 | return 0; | |
315 | } | |
316 | ||
8115d60c | 317 | static int process_finished_round_stub(union perf_event *event __used, |
d6b17beb FW |
318 | struct perf_session *session __used, |
319 | struct perf_event_ops *ops __used) | |
320 | { | |
321 | dump_printf(": unhandled!\n"); | |
322 | return 0; | |
323 | } | |
324 | ||
8115d60c | 325 | static int process_finished_round(union perf_event *event, |
d6b17beb FW |
326 | struct perf_session *session, |
327 | struct perf_event_ops *ops); | |
328 | ||
06aae590 ACM |
329 | static void perf_event_ops__fill_defaults(struct perf_event_ops *handler) |
330 | { | |
55aa640f | 331 | if (handler->sample == NULL) |
9e69c210 | 332 | handler->sample = process_event_sample_stub; |
55aa640f ACM |
333 | if (handler->mmap == NULL) |
334 | handler->mmap = process_event_stub; | |
335 | if (handler->comm == NULL) | |
336 | handler->comm = process_event_stub; | |
337 | if (handler->fork == NULL) | |
338 | handler->fork = process_event_stub; | |
339 | if (handler->exit == NULL) | |
340 | handler->exit = process_event_stub; | |
341 | if (handler->lost == NULL) | |
8115d60c | 342 | handler->lost = perf_event__process_lost; |
55aa640f ACM |
343 | if (handler->read == NULL) |
344 | handler->read = process_event_stub; | |
345 | if (handler->throttle == NULL) | |
346 | handler->throttle = process_event_stub; | |
347 | if (handler->unthrottle == NULL) | |
348 | handler->unthrottle = process_event_stub; | |
2c46dbb5 | 349 | if (handler->attr == NULL) |
640c03ce | 350 | handler->attr = process_event_synth_stub; |
cd19a035 | 351 | if (handler->event_type == NULL) |
640c03ce | 352 | handler->event_type = process_event_synth_stub; |
9215545e | 353 | if (handler->tracing_data == NULL) |
640c03ce | 354 | handler->tracing_data = process_event_synth_stub; |
c7929e47 | 355 | if (handler->build_id == NULL) |
640c03ce | 356 | handler->build_id = process_event_synth_stub; |
d6b17beb FW |
357 | if (handler->finished_round == NULL) { |
358 | if (handler->ordered_samples) | |
359 | handler->finished_round = process_finished_round; | |
360 | else | |
361 | handler->finished_round = process_finished_round_stub; | |
362 | } | |
06aae590 ACM |
363 | } |
364 | ||
ba21594c ACM |
365 | void mem_bswap_64(void *src, int byte_size) |
366 | { | |
367 | u64 *m = src; | |
368 | ||
369 | while (byte_size > 0) { | |
370 | *m = bswap_64(*m); | |
371 | byte_size -= sizeof(u64); | |
372 | ++m; | |
373 | } | |
374 | } | |
375 | ||
8115d60c | 376 | static void perf_event__all64_swap(union perf_event *event) |
ba21594c | 377 | { |
8115d60c ACM |
378 | struct perf_event_header *hdr = &event->header; |
379 | mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr)); | |
ba21594c ACM |
380 | } |
381 | ||
8115d60c | 382 | static void perf_event__comm_swap(union perf_event *event) |
ba21594c | 383 | { |
8115d60c ACM |
384 | event->comm.pid = bswap_32(event->comm.pid); |
385 | event->comm.tid = bswap_32(event->comm.tid); | |
ba21594c ACM |
386 | } |
387 | ||
8115d60c | 388 | static void perf_event__mmap_swap(union perf_event *event) |
ba21594c | 389 | { |
8115d60c ACM |
390 | event->mmap.pid = bswap_32(event->mmap.pid); |
391 | event->mmap.tid = bswap_32(event->mmap.tid); | |
392 | event->mmap.start = bswap_64(event->mmap.start); | |
393 | event->mmap.len = bswap_64(event->mmap.len); | |
394 | event->mmap.pgoff = bswap_64(event->mmap.pgoff); | |
ba21594c ACM |
395 | } |
396 | ||
8115d60c | 397 | static void perf_event__task_swap(union perf_event *event) |
ba21594c | 398 | { |
8115d60c ACM |
399 | event->fork.pid = bswap_32(event->fork.pid); |
400 | event->fork.tid = bswap_32(event->fork.tid); | |
401 | event->fork.ppid = bswap_32(event->fork.ppid); | |
402 | event->fork.ptid = bswap_32(event->fork.ptid); | |
403 | event->fork.time = bswap_64(event->fork.time); | |
ba21594c ACM |
404 | } |
405 | ||
8115d60c | 406 | static void perf_event__read_swap(union perf_event *event) |
ba21594c | 407 | { |
8115d60c ACM |
408 | event->read.pid = bswap_32(event->read.pid); |
409 | event->read.tid = bswap_32(event->read.tid); | |
410 | event->read.value = bswap_64(event->read.value); | |
411 | event->read.time_enabled = bswap_64(event->read.time_enabled); | |
412 | event->read.time_running = bswap_64(event->read.time_running); | |
413 | event->read.id = bswap_64(event->read.id); | |
ba21594c ACM |
414 | } |
415 | ||
eda3913b DA |
416 | /* exported for swapping attributes in file header */ |
417 | void perf_event__attr_swap(struct perf_event_attr *attr) | |
418 | { | |
419 | attr->type = bswap_32(attr->type); | |
420 | attr->size = bswap_32(attr->size); | |
421 | attr->config = bswap_64(attr->config); | |
422 | attr->sample_period = bswap_64(attr->sample_period); | |
423 | attr->sample_type = bswap_64(attr->sample_type); | |
424 | attr->read_format = bswap_64(attr->read_format); | |
425 | attr->wakeup_events = bswap_32(attr->wakeup_events); | |
426 | attr->bp_type = bswap_32(attr->bp_type); | |
427 | attr->bp_addr = bswap_64(attr->bp_addr); | |
428 | attr->bp_len = bswap_64(attr->bp_len); | |
429 | } | |
430 | ||
431 | static void perf_event__hdr_attr_swap(union perf_event *event) | |
2c46dbb5 TZ |
432 | { |
433 | size_t size; | |
434 | ||
eda3913b | 435 | perf_event__attr_swap(&event->attr.attr); |
2c46dbb5 | 436 | |
8115d60c ACM |
437 | size = event->header.size; |
438 | size -= (void *)&event->attr.id - (void *)event; | |
439 | mem_bswap_64(event->attr.id, size); | |
2c46dbb5 TZ |
440 | } |
441 | ||
8115d60c | 442 | static void perf_event__event_type_swap(union perf_event *event) |
cd19a035 | 443 | { |
8115d60c ACM |
444 | event->event_type.event_type.event_id = |
445 | bswap_64(event->event_type.event_type.event_id); | |
cd19a035 TZ |
446 | } |
447 | ||
8115d60c | 448 | static void perf_event__tracing_data_swap(union perf_event *event) |
9215545e | 449 | { |
8115d60c | 450 | event->tracing_data.size = bswap_32(event->tracing_data.size); |
9215545e TZ |
451 | } |
452 | ||
8115d60c | 453 | typedef void (*perf_event__swap_op)(union perf_event *event); |
ba21594c | 454 | |
8115d60c ACM |
455 | static perf_event__swap_op perf_event__swap_ops[] = { |
456 | [PERF_RECORD_MMAP] = perf_event__mmap_swap, | |
457 | [PERF_RECORD_COMM] = perf_event__comm_swap, | |
458 | [PERF_RECORD_FORK] = perf_event__task_swap, | |
459 | [PERF_RECORD_EXIT] = perf_event__task_swap, | |
460 | [PERF_RECORD_LOST] = perf_event__all64_swap, | |
461 | [PERF_RECORD_READ] = perf_event__read_swap, | |
462 | [PERF_RECORD_SAMPLE] = perf_event__all64_swap, | |
eda3913b | 463 | [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap, |
8115d60c ACM |
464 | [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap, |
465 | [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap, | |
466 | [PERF_RECORD_HEADER_BUILD_ID] = NULL, | |
467 | [PERF_RECORD_HEADER_MAX] = NULL, | |
ba21594c ACM |
468 | }; |
469 | ||
c61e52ee FW |
470 | struct sample_queue { |
471 | u64 timestamp; | |
e4c2df13 | 472 | u64 file_offset; |
8115d60c | 473 | union perf_event *event; |
c61e52ee FW |
474 | struct list_head list; |
475 | }; | |
476 | ||
020bb75a TG |
477 | static void perf_session_free_sample_buffers(struct perf_session *session) |
478 | { | |
479 | struct ordered_samples *os = &session->ordered_samples; | |
480 | ||
5c891f38 | 481 | while (!list_empty(&os->to_free)) { |
020bb75a TG |
482 | struct sample_queue *sq; |
483 | ||
5c891f38 | 484 | sq = list_entry(os->to_free.next, struct sample_queue, list); |
020bb75a TG |
485 | list_del(&sq->list); |
486 | free(sq); | |
487 | } | |
488 | } | |
489 | ||
cbf41645 | 490 | static int perf_session_deliver_event(struct perf_session *session, |
8115d60c | 491 | union perf_event *event, |
8d50e5b4 | 492 | struct perf_sample *sample, |
f74725dc TG |
493 | struct perf_event_ops *ops, |
494 | u64 file_offset); | |
cbf41645 | 495 | |
c61e52ee FW |
496 | static void flush_sample_queue(struct perf_session *s, |
497 | struct perf_event_ops *ops) | |
498 | { | |
a1225dec TG |
499 | struct ordered_samples *os = &s->ordered_samples; |
500 | struct list_head *head = &os->samples; | |
c61e52ee | 501 | struct sample_queue *tmp, *iter; |
8d50e5b4 | 502 | struct perf_sample sample; |
a1225dec TG |
503 | u64 limit = os->next_flush; |
504 | u64 last_ts = os->last_sample ? os->last_sample->timestamp : 0ULL; | |
88660563 | 505 | unsigned idx = 0, progress_next = os->nr_samples / 16; |
5538beca | 506 | int ret; |
c61e52ee | 507 | |
d6b17beb | 508 | if (!ops->ordered_samples || !limit) |
c61e52ee FW |
509 | return; |
510 | ||
511 | list_for_each_entry_safe(iter, tmp, head, list) { | |
512 | if (iter->timestamp > limit) | |
a1225dec | 513 | break; |
c61e52ee | 514 | |
5538beca FW |
515 | ret = perf_session__parse_sample(s, iter->event, &sample); |
516 | if (ret) | |
517 | pr_err("Can't parse sample, err = %d\n", ret); | |
518 | else | |
519 | perf_session_deliver_event(s, iter->event, &sample, ops, | |
520 | iter->file_offset); | |
c61e52ee | 521 | |
a1225dec | 522 | os->last_flush = iter->timestamp; |
c61e52ee | 523 | list_del(&iter->list); |
020bb75a | 524 | list_add(&iter->list, &os->sample_cache); |
88660563 ACM |
525 | if (++idx >= progress_next) { |
526 | progress_next += os->nr_samples / 16; | |
527 | ui_progress__update(idx, os->nr_samples, | |
528 | "Processing time ordered events..."); | |
529 | } | |
c61e52ee | 530 | } |
a1225dec TG |
531 | |
532 | if (list_empty(head)) { | |
533 | os->last_sample = NULL; | |
534 | } else if (last_ts <= limit) { | |
535 | os->last_sample = | |
536 | list_entry(head->prev, struct sample_queue, list); | |
537 | } | |
88660563 ACM |
538 | |
539 | os->nr_samples = 0; | |
c61e52ee FW |
540 | } |
541 | ||
d6b17beb FW |
542 | /* |
543 | * When perf record finishes a pass on every buffers, it records this pseudo | |
544 | * event. | |
545 | * We record the max timestamp t found in the pass n. | |
546 | * Assuming these timestamps are monotonic across cpus, we know that if | |
547 | * a buffer still has events with timestamps below t, they will be all | |
548 | * available and then read in the pass n + 1. | |
549 | * Hence when we start to read the pass n + 2, we can safely flush every | |
550 | * events with timestamps below t. | |
551 | * | |
552 | * ============ PASS n ================= | |
553 | * CPU 0 | CPU 1 | |
554 | * | | |
555 | * cnt1 timestamps | cnt2 timestamps | |
556 | * 1 | 2 | |
557 | * 2 | 3 | |
558 | * - | 4 <--- max recorded | |
559 | * | |
560 | * ============ PASS n + 1 ============== | |
561 | * CPU 0 | CPU 1 | |
562 | * | | |
563 | * cnt1 timestamps | cnt2 timestamps | |
564 | * 3 | 5 | |
565 | * 4 | 6 | |
566 | * 5 | 7 <---- max recorded | |
567 | * | |
568 | * Flush every events below timestamp 4 | |
569 | * | |
570 | * ============ PASS n + 2 ============== | |
571 | * CPU 0 | CPU 1 | |
572 | * | | |
573 | * cnt1 timestamps | cnt2 timestamps | |
574 | * 6 | 8 | |
575 | * 7 | 9 | |
576 | * - | 10 | |
577 | * | |
578 | * Flush every events below timestamp 7 | |
579 | * etc... | |
580 | */ | |
8115d60c | 581 | static int process_finished_round(union perf_event *event __used, |
d6b17beb FW |
582 | struct perf_session *session, |
583 | struct perf_event_ops *ops) | |
584 | { | |
585 | flush_sample_queue(session, ops); | |
586 | session->ordered_samples.next_flush = session->ordered_samples.max_timestamp; | |
587 | ||
588 | return 0; | |
589 | } | |
590 | ||
c61e52ee | 591 | /* The queue is ordered by time */ |
cbf41645 | 592 | static void __queue_event(struct sample_queue *new, struct perf_session *s) |
c61e52ee | 593 | { |
a1225dec TG |
594 | struct ordered_samples *os = &s->ordered_samples; |
595 | struct sample_queue *sample = os->last_sample; | |
596 | u64 timestamp = new->timestamp; | |
597 | struct list_head *p; | |
c61e52ee | 598 | |
88660563 | 599 | ++os->nr_samples; |
a1225dec | 600 | os->last_sample = new; |
c61e52ee | 601 | |
a1225dec TG |
602 | if (!sample) { |
603 | list_add(&new->list, &os->samples); | |
604 | os->max_timestamp = timestamp; | |
c61e52ee FW |
605 | return; |
606 | } | |
607 | ||
608 | /* | |
a1225dec TG |
609 | * last_sample might point to some random place in the list as it's |
610 | * the last queued event. We expect that the new event is close to | |
611 | * this. | |
c61e52ee | 612 | */ |
a1225dec TG |
613 | if (sample->timestamp <= timestamp) { |
614 | while (sample->timestamp <= timestamp) { | |
615 | p = sample->list.next; | |
616 | if (p == &os->samples) { | |
617 | list_add_tail(&new->list, &os->samples); | |
618 | os->max_timestamp = timestamp; | |
619 | return; | |
620 | } | |
621 | sample = list_entry(p, struct sample_queue, list); | |
622 | } | |
623 | list_add_tail(&new->list, &sample->list); | |
624 | } else { | |
625 | while (sample->timestamp > timestamp) { | |
626 | p = sample->list.prev; | |
627 | if (p == &os->samples) { | |
628 | list_add(&new->list, &os->samples); | |
629 | return; | |
630 | } | |
631 | sample = list_entry(p, struct sample_queue, list); | |
632 | } | |
633 | list_add(&new->list, &sample->list); | |
634 | } | |
c61e52ee FW |
635 | } |
636 | ||
5c891f38 TG |
637 | #define MAX_SAMPLE_BUFFER (64 * 1024 / sizeof(struct sample_queue)) |
638 | ||
8115d60c | 639 | static int perf_session_queue_event(struct perf_session *s, union perf_event *event, |
8d50e5b4 | 640 | struct perf_sample *sample, u64 file_offset) |
c61e52ee | 641 | { |
5c891f38 TG |
642 | struct ordered_samples *os = &s->ordered_samples; |
643 | struct list_head *sc = &os->sample_cache; | |
8d50e5b4 | 644 | u64 timestamp = sample->time; |
c61e52ee | 645 | struct sample_queue *new; |
c61e52ee | 646 | |
79a14c1f | 647 | if (!timestamp || timestamp == ~0ULL) |
cbf41645 TG |
648 | return -ETIME; |
649 | ||
c61e52ee FW |
650 | if (timestamp < s->ordered_samples.last_flush) { |
651 | printf("Warning: Timestamp below last timeslice flush\n"); | |
652 | return -EINVAL; | |
653 | } | |
654 | ||
020bb75a TG |
655 | if (!list_empty(sc)) { |
656 | new = list_entry(sc->next, struct sample_queue, list); | |
657 | list_del(&new->list); | |
5c891f38 TG |
658 | } else if (os->sample_buffer) { |
659 | new = os->sample_buffer + os->sample_buffer_idx; | |
660 | if (++os->sample_buffer_idx == MAX_SAMPLE_BUFFER) | |
661 | os->sample_buffer = NULL; | |
020bb75a | 662 | } else { |
5c891f38 TG |
663 | os->sample_buffer = malloc(MAX_SAMPLE_BUFFER * sizeof(*new)); |
664 | if (!os->sample_buffer) | |
020bb75a | 665 | return -ENOMEM; |
5c891f38 TG |
666 | list_add(&os->sample_buffer->list, &os->to_free); |
667 | os->sample_buffer_idx = 2; | |
668 | new = os->sample_buffer + 1; | |
020bb75a | 669 | } |
c61e52ee FW |
670 | |
671 | new->timestamp = timestamp; | |
e4c2df13 | 672 | new->file_offset = file_offset; |
fe174207 | 673 | new->event = event; |
c61e52ee | 674 | |
cbf41645 | 675 | __queue_event(new, s); |
640c03ce | 676 | |
640c03ce ACM |
677 | return 0; |
678 | } | |
c61e52ee | 679 | |
8d50e5b4 | 680 | static void callchain__printf(struct perf_sample *sample) |
640c03ce ACM |
681 | { |
682 | unsigned int i; | |
c61e52ee | 683 | |
9486aa38 | 684 | printf("... chain: nr:%" PRIu64 "\n", sample->callchain->nr); |
640c03ce ACM |
685 | |
686 | for (i = 0; i < sample->callchain->nr; i++) | |
9486aa38 ACM |
687 | printf("..... %2d: %016" PRIx64 "\n", |
688 | i, sample->callchain->ips[i]); | |
c61e52ee FW |
689 | } |
690 | ||
9c90a61c | 691 | static void perf_session__print_tstamp(struct perf_session *session, |
8115d60c | 692 | union perf_event *event, |
8d50e5b4 | 693 | struct perf_sample *sample) |
9c90a61c ACM |
694 | { |
695 | if (event->header.type != PERF_RECORD_SAMPLE && | |
696 | !session->sample_id_all) { | |
697 | fputs("-1 -1 ", stdout); | |
698 | return; | |
699 | } | |
700 | ||
701 | if ((session->sample_type & PERF_SAMPLE_CPU)) | |
702 | printf("%u ", sample->cpu); | |
703 | ||
704 | if (session->sample_type & PERF_SAMPLE_TIME) | |
9486aa38 | 705 | printf("%" PRIu64 " ", sample->time); |
9c90a61c ACM |
706 | } |
707 | ||
8115d60c | 708 | static void dump_event(struct perf_session *session, union perf_event *event, |
8d50e5b4 | 709 | u64 file_offset, struct perf_sample *sample) |
9aefcab0 TG |
710 | { |
711 | if (!dump_trace) | |
712 | return; | |
713 | ||
9486aa38 ACM |
714 | printf("\n%#" PRIx64 " [%#x]: event: %d\n", |
715 | file_offset, event->header.size, event->header.type); | |
9aefcab0 TG |
716 | |
717 | trace_event(event); | |
718 | ||
719 | if (sample) | |
720 | perf_session__print_tstamp(session, event, sample); | |
721 | ||
9486aa38 | 722 | printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset, |
8115d60c | 723 | event->header.size, perf_event__name(event->header.type)); |
9aefcab0 TG |
724 | } |
725 | ||
8115d60c | 726 | static void dump_sample(struct perf_session *session, union perf_event *event, |
8d50e5b4 | 727 | struct perf_sample *sample) |
9aefcab0 | 728 | { |
ddbc24b7 ACM |
729 | if (!dump_trace) |
730 | return; | |
731 | ||
7cec0922 | 732 | printf("(IP, %d): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n", |
9486aa38 | 733 | event->header.misc, sample->pid, sample->tid, sample->ip, |
7cec0922 | 734 | sample->period, sample->addr); |
9aefcab0 TG |
735 | |
736 | if (session->sample_type & PERF_SAMPLE_CALLCHAIN) | |
ddbc24b7 | 737 | callchain__printf(sample); |
9aefcab0 TG |
738 | } |
739 | ||
cbf41645 | 740 | static int perf_session_deliver_event(struct perf_session *session, |
8115d60c | 741 | union perf_event *event, |
8d50e5b4 | 742 | struct perf_sample *sample, |
f74725dc | 743 | struct perf_event_ops *ops, |
532e7269 | 744 | u64 file_offset) |
cbf41645 | 745 | { |
9e69c210 ACM |
746 | struct perf_evsel *evsel; |
747 | ||
532e7269 TG |
748 | dump_event(session, event, file_offset, sample); |
749 | ||
7b27509f ACM |
750 | evsel = perf_evlist__id2evsel(session->evlist, sample->id); |
751 | if (evsel != NULL && event->header.type != PERF_RECORD_SAMPLE) { | |
752 | /* | |
753 | * XXX We're leaving PERF_RECORD_SAMPLE unnacounted here | |
754 | * because the tools right now may apply filters, discarding | |
755 | * some of the samples. For consistency, in the future we | |
756 | * should have something like nr_filtered_samples and remove | |
757 | * the sample->period from total_sample_period, etc, KISS for | |
758 | * now tho. | |
759 | * | |
760 | * Also testing against NULL allows us to handle files without | |
761 | * attr.sample_id_all and/or without PERF_SAMPLE_ID. In the | |
762 | * future probably it'll be a good idea to restrict event | |
763 | * processing via perf_session to files with both set. | |
764 | */ | |
765 | hists__inc_nr_events(&evsel->hists, event->header.type); | |
766 | } | |
767 | ||
cbf41645 TG |
768 | switch (event->header.type) { |
769 | case PERF_RECORD_SAMPLE: | |
532e7269 | 770 | dump_sample(session, event, sample); |
9e69c210 ACM |
771 | if (evsel == NULL) { |
772 | ++session->hists.stats.nr_unknown_id; | |
773 | return -1; | |
774 | } | |
775 | return ops->sample(event, sample, evsel, session); | |
cbf41645 TG |
776 | case PERF_RECORD_MMAP: |
777 | return ops->mmap(event, sample, session); | |
778 | case PERF_RECORD_COMM: | |
779 | return ops->comm(event, sample, session); | |
780 | case PERF_RECORD_FORK: | |
781 | return ops->fork(event, sample, session); | |
782 | case PERF_RECORD_EXIT: | |
783 | return ops->exit(event, sample, session); | |
784 | case PERF_RECORD_LOST: | |
785 | return ops->lost(event, sample, session); | |
786 | case PERF_RECORD_READ: | |
787 | return ops->read(event, sample, session); | |
788 | case PERF_RECORD_THROTTLE: | |
789 | return ops->throttle(event, sample, session); | |
790 | case PERF_RECORD_UNTHROTTLE: | |
791 | return ops->unthrottle(event, sample, session); | |
792 | default: | |
793 | ++session->hists.stats.nr_unknown_events; | |
794 | return -1; | |
795 | } | |
796 | } | |
797 | ||
3dfc2c0a | 798 | static int perf_session__preprocess_sample(struct perf_session *session, |
8115d60c | 799 | union perf_event *event, struct perf_sample *sample) |
3dfc2c0a TG |
800 | { |
801 | if (event->header.type != PERF_RECORD_SAMPLE || | |
802 | !(session->sample_type & PERF_SAMPLE_CALLCHAIN)) | |
803 | return 0; | |
804 | ||
805 | if (!ip_callchain__valid(sample->callchain, event)) { | |
806 | pr_debug("call-chain problem with event, skipping it.\n"); | |
807 | ++session->hists.stats.nr_invalid_chains; | |
808 | session->hists.stats.total_invalid_chains += sample->period; | |
809 | return -EINVAL; | |
810 | } | |
811 | return 0; | |
812 | } | |
813 | ||
8115d60c | 814 | static int perf_session__process_user_event(struct perf_session *session, union perf_event *event, |
ba74f064 | 815 | struct perf_event_ops *ops, u64 file_offset) |
06aae590 | 816 | { |
ba74f064 | 817 | dump_event(session, event, file_offset, NULL); |
06aae590 | 818 | |
cbf41645 | 819 | /* These events are processed right away */ |
06aae590 | 820 | switch (event->header.type) { |
2c46dbb5 | 821 | case PERF_RECORD_HEADER_ATTR: |
cbf41645 | 822 | return ops->attr(event, session); |
cd19a035 | 823 | case PERF_RECORD_HEADER_EVENT_TYPE: |
cbf41645 | 824 | return ops->event_type(event, session); |
9215545e TZ |
825 | case PERF_RECORD_HEADER_TRACING_DATA: |
826 | /* setup for reading amidst mmap */ | |
cbf41645 TG |
827 | lseek(session->fd, file_offset, SEEK_SET); |
828 | return ops->tracing_data(event, session); | |
c7929e47 | 829 | case PERF_RECORD_HEADER_BUILD_ID: |
cbf41645 | 830 | return ops->build_id(event, session); |
d6b17beb | 831 | case PERF_RECORD_FINISHED_ROUND: |
cbf41645 | 832 | return ops->finished_round(event, session, ops); |
06aae590 | 833 | default: |
ba74f064 | 834 | return -EINVAL; |
06aae590 | 835 | } |
ba74f064 TG |
836 | } |
837 | ||
838 | static int perf_session__process_event(struct perf_session *session, | |
8115d60c | 839 | union perf_event *event, |
ba74f064 TG |
840 | struct perf_event_ops *ops, |
841 | u64 file_offset) | |
842 | { | |
8d50e5b4 | 843 | struct perf_sample sample; |
ba74f064 TG |
844 | int ret; |
845 | ||
8115d60c ACM |
846 | if (session->header.needs_swap && |
847 | perf_event__swap_ops[event->header.type]) | |
848 | perf_event__swap_ops[event->header.type](event); | |
ba74f064 TG |
849 | |
850 | if (event->header.type >= PERF_RECORD_HEADER_MAX) | |
851 | return -EINVAL; | |
852 | ||
853 | hists__inc_nr_events(&session->hists, event->header.type); | |
854 | ||
855 | if (event->header.type >= PERF_RECORD_USER_TYPE_START) | |
856 | return perf_session__process_user_event(session, event, ops, file_offset); | |
cbf41645 | 857 | |
3dfc2c0a TG |
858 | /* |
859 | * For all kernel events we get the sample data | |
860 | */ | |
5538beca FW |
861 | ret = perf_session__parse_sample(session, event, &sample); |
862 | if (ret) | |
863 | return ret; | |
3dfc2c0a TG |
864 | |
865 | /* Preprocess sample records - precheck callchains */ | |
866 | if (perf_session__preprocess_sample(session, event, &sample)) | |
867 | return 0; | |
868 | ||
cbf41645 | 869 | if (ops->ordered_samples) { |
e4c2df13 TG |
870 | ret = perf_session_queue_event(session, event, &sample, |
871 | file_offset); | |
cbf41645 TG |
872 | if (ret != -ETIME) |
873 | return ret; | |
874 | } | |
875 | ||
f74725dc TG |
876 | return perf_session_deliver_event(session, event, &sample, ops, |
877 | file_offset); | |
06aae590 ACM |
878 | } |
879 | ||
ba21594c ACM |
880 | void perf_event_header__bswap(struct perf_event_header *self) |
881 | { | |
882 | self->type = bswap_32(self->type); | |
883 | self->misc = bswap_16(self->misc); | |
884 | self->size = bswap_16(self->size); | |
885 | } | |
886 | ||
06aae590 ACM |
887 | static struct thread *perf_session__register_idle_thread(struct perf_session *self) |
888 | { | |
889 | struct thread *thread = perf_session__findnew(self, 0); | |
890 | ||
891 | if (thread == NULL || thread__set_comm(thread, "swapper")) { | |
892 | pr_err("problem inserting idle task.\n"); | |
893 | thread = NULL; | |
894 | } | |
895 | ||
896 | return thread; | |
897 | } | |
898 | ||
11095994 ACM |
899 | static void perf_session__warn_about_errors(const struct perf_session *session, |
900 | const struct perf_event_ops *ops) | |
901 | { | |
8115d60c | 902 | if (ops->lost == perf_event__process_lost && |
7b27509f ACM |
903 | session->hists.stats.nr_events[PERF_RECORD_LOST] != 0) { |
904 | ui__warning("Processed %d events and lost %d chunks!\n\n" | |
905 | "Check IO/CPU overload!\n\n", | |
906 | session->hists.stats.nr_events[0], | |
907 | session->hists.stats.nr_events[PERF_RECORD_LOST]); | |
11095994 ACM |
908 | } |
909 | ||
910 | if (session->hists.stats.nr_unknown_events != 0) { | |
911 | ui__warning("Found %u unknown events!\n\n" | |
912 | "Is this an older tool processing a perf.data " | |
913 | "file generated by a more recent tool?\n\n" | |
914 | "If that is not the case, consider " | |
915 | "reporting to linux-kernel@vger.kernel.org.\n\n", | |
916 | session->hists.stats.nr_unknown_events); | |
917 | } | |
918 | ||
9e69c210 ACM |
919 | if (session->hists.stats.nr_unknown_id != 0) { |
920 | ui__warning("%u samples with id not present in the header\n", | |
921 | session->hists.stats.nr_unknown_id); | |
922 | } | |
923 | ||
11095994 ACM |
924 | if (session->hists.stats.nr_invalid_chains != 0) { |
925 | ui__warning("Found invalid callchains!\n\n" | |
926 | "%u out of %u events were discarded for this reason.\n\n" | |
927 | "Consider reporting to linux-kernel@vger.kernel.org.\n\n", | |
928 | session->hists.stats.nr_invalid_chains, | |
929 | session->hists.stats.nr_events[PERF_RECORD_SAMPLE]); | |
930 | } | |
931 | } | |
932 | ||
8dc58101 TZ |
933 | #define session_done() (*(volatile int *)(&session_done)) |
934 | volatile int session_done; | |
935 | ||
936 | static int __perf_session__process_pipe_events(struct perf_session *self, | |
937 | struct perf_event_ops *ops) | |
938 | { | |
8115d60c | 939 | union perf_event event; |
8dc58101 TZ |
940 | uint32_t size; |
941 | int skip = 0; | |
942 | u64 head; | |
943 | int err; | |
944 | void *p; | |
945 | ||
946 | perf_event_ops__fill_defaults(ops); | |
947 | ||
948 | head = 0; | |
949 | more: | |
1e7972cc | 950 | err = readn(self->fd, &event, sizeof(struct perf_event_header)); |
8dc58101 TZ |
951 | if (err <= 0) { |
952 | if (err == 0) | |
953 | goto done; | |
954 | ||
955 | pr_err("failed to read event header\n"); | |
956 | goto out_err; | |
957 | } | |
958 | ||
959 | if (self->header.needs_swap) | |
960 | perf_event_header__bswap(&event.header); | |
961 | ||
962 | size = event.header.size; | |
963 | if (size == 0) | |
964 | size = 8; | |
965 | ||
966 | p = &event; | |
967 | p += sizeof(struct perf_event_header); | |
968 | ||
794e43b5 | 969 | if (size - sizeof(struct perf_event_header)) { |
1e7972cc | 970 | err = readn(self->fd, p, size - sizeof(struct perf_event_header)); |
794e43b5 TZ |
971 | if (err <= 0) { |
972 | if (err == 0) { | |
973 | pr_err("unexpected end of event stream\n"); | |
974 | goto done; | |
975 | } | |
8dc58101 | 976 | |
794e43b5 TZ |
977 | pr_err("failed to read event data\n"); |
978 | goto out_err; | |
979 | } | |
8dc58101 TZ |
980 | } |
981 | ||
982 | if (size == 0 || | |
0331ee0c | 983 | (skip = perf_session__process_event(self, &event, ops, head)) < 0) { |
9486aa38 | 984 | dump_printf("%#" PRIx64 " [%#x]: skipping unknown header type: %d\n", |
8dc58101 TZ |
985 | head, event.header.size, event.header.type); |
986 | /* | |
987 | * assume we lost track of the stream, check alignment, and | |
988 | * increment a single u64 in the hope to catch on again 'soon'. | |
989 | */ | |
990 | if (unlikely(head & 7)) | |
991 | head &= ~7ULL; | |
992 | ||
993 | size = 8; | |
994 | } | |
995 | ||
996 | head += size; | |
997 | ||
8dc58101 TZ |
998 | if (skip > 0) |
999 | head += skip; | |
1000 | ||
1001 | if (!session_done()) | |
1002 | goto more; | |
1003 | done: | |
1004 | err = 0; | |
1005 | out_err: | |
11095994 | 1006 | perf_session__warn_about_errors(self, ops); |
020bb75a | 1007 | perf_session_free_sample_buffers(self); |
8dc58101 TZ |
1008 | return err; |
1009 | } | |
1010 | ||
998bedc8 FW |
1011 | static union perf_event * |
1012 | fetch_mmaped_event(struct perf_session *session, | |
1013 | u64 head, size_t mmap_size, char *buf) | |
1014 | { | |
1015 | union perf_event *event; | |
1016 | ||
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 | return NULL; | |
1023 | ||
1024 | event = (union perf_event *)(buf + head); | |
1025 | ||
1026 | if (session->header.needs_swap) | |
1027 | perf_event_header__bswap(&event->header); | |
1028 | ||
1029 | if (head + event->header.size > mmap_size) | |
1030 | return NULL; | |
1031 | ||
1032 | return event; | |
1033 | } | |
1034 | ||
0331ee0c | 1035 | int __perf_session__process_events(struct perf_session *session, |
6122e4e4 ACM |
1036 | u64 data_offset, u64 data_size, |
1037 | u64 file_size, struct perf_event_ops *ops) | |
06aae590 | 1038 | { |
55b44629 | 1039 | u64 head, page_offset, file_offset, file_pos, progress_next; |
fe174207 | 1040 | int err, mmap_prot, mmap_flags, map_idx = 0; |
55b44629 | 1041 | size_t page_size, mmap_size; |
fe174207 | 1042 | char *buf, *mmaps[8]; |
8115d60c | 1043 | union perf_event *event; |
06aae590 | 1044 | uint32_t size; |
0331ee0c | 1045 | |
06aae590 ACM |
1046 | perf_event_ops__fill_defaults(ops); |
1047 | ||
1b75962e | 1048 | page_size = sysconf(_SC_PAGESIZE); |
06aae590 | 1049 | |
0331ee0c TG |
1050 | page_offset = page_size * (data_offset / page_size); |
1051 | file_offset = page_offset; | |
1052 | head = data_offset - page_offset; | |
06aae590 | 1053 | |
d6513281 TG |
1054 | if (data_offset + data_size < file_size) |
1055 | file_size = data_offset + data_size; | |
1056 | ||
55b44629 | 1057 | progress_next = file_size / 16; |
55b44629 TG |
1058 | |
1059 | mmap_size = session->mmap_window; | |
1060 | if (mmap_size > file_size) | |
1061 | mmap_size = file_size; | |
1062 | ||
fe174207 TG |
1063 | memset(mmaps, 0, sizeof(mmaps)); |
1064 | ||
ba21594c ACM |
1065 | mmap_prot = PROT_READ; |
1066 | mmap_flags = MAP_SHARED; | |
1067 | ||
0331ee0c | 1068 | if (session->header.needs_swap) { |
ba21594c ACM |
1069 | mmap_prot |= PROT_WRITE; |
1070 | mmap_flags = MAP_PRIVATE; | |
1071 | } | |
06aae590 | 1072 | remap: |
55b44629 TG |
1073 | buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, session->fd, |
1074 | file_offset); | |
06aae590 ACM |
1075 | if (buf == MAP_FAILED) { |
1076 | pr_err("failed to mmap file\n"); | |
1077 | err = -errno; | |
1078 | goto out_err; | |
1079 | } | |
fe174207 TG |
1080 | mmaps[map_idx] = buf; |
1081 | map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1); | |
d6513281 | 1082 | file_pos = file_offset + head; |
06aae590 ACM |
1083 | |
1084 | more: | |
998bedc8 FW |
1085 | event = fetch_mmaped_event(session, head, mmap_size, buf); |
1086 | if (!event) { | |
fe174207 TG |
1087 | if (mmaps[map_idx]) { |
1088 | munmap(mmaps[map_idx], mmap_size); | |
1089 | mmaps[map_idx] = NULL; | |
1090 | } | |
06aae590 | 1091 | |
0331ee0c TG |
1092 | page_offset = page_size * (head / page_size); |
1093 | file_offset += page_offset; | |
1094 | head -= page_offset; | |
06aae590 ACM |
1095 | goto remap; |
1096 | } | |
1097 | ||
1098 | size = event->header.size; | |
1099 | ||
d6513281 TG |
1100 | if (size == 0 || |
1101 | perf_session__process_event(session, event, ops, file_pos) < 0) { | |
9486aa38 | 1102 | dump_printf("%#" PRIx64 " [%#x]: skipping unknown header type: %d\n", |
0331ee0c | 1103 | file_offset + head, event->header.size, |
06aae590 ACM |
1104 | event->header.type); |
1105 | /* | |
1106 | * assume we lost track of the stream, check alignment, and | |
1107 | * increment a single u64 in the hope to catch on again 'soon'. | |
1108 | */ | |
1109 | if (unlikely(head & 7)) | |
1110 | head &= ~7ULL; | |
1111 | ||
1112 | size = 8; | |
1113 | } | |
1114 | ||
1115 | head += size; | |
d6513281 | 1116 | file_pos += size; |
06aae590 | 1117 | |
55b44629 TG |
1118 | if (file_pos >= progress_next) { |
1119 | progress_next += file_size / 16; | |
ca59bcbc ACM |
1120 | ui_progress__update(file_pos, file_size, |
1121 | "Processing events..."); | |
55b44629 TG |
1122 | } |
1123 | ||
d6513281 | 1124 | if (file_pos < file_size) |
06aae590 | 1125 | goto more; |
d6513281 | 1126 | |
06aae590 | 1127 | err = 0; |
c61e52ee | 1128 | /* do the final flush for ordered samples */ |
0331ee0c TG |
1129 | session->ordered_samples.next_flush = ULLONG_MAX; |
1130 | flush_sample_queue(session, ops); | |
06aae590 | 1131 | out_err: |
11095994 | 1132 | perf_session__warn_about_errors(session, ops); |
020bb75a | 1133 | perf_session_free_sample_buffers(session); |
06aae590 ACM |
1134 | return err; |
1135 | } | |
27295592 | 1136 | |
6122e4e4 ACM |
1137 | int perf_session__process_events(struct perf_session *self, |
1138 | struct perf_event_ops *ops) | |
1139 | { | |
1140 | int err; | |
1141 | ||
1142 | if (perf_session__register_idle_thread(self) == NULL) | |
1143 | return -ENOMEM; | |
1144 | ||
8dc58101 TZ |
1145 | if (!self->fd_pipe) |
1146 | err = __perf_session__process_events(self, | |
1147 | self->header.data_offset, | |
1148 | self->header.data_size, | |
1149 | self->size, ops); | |
1150 | else | |
1151 | err = __perf_session__process_pipe_events(self, ops); | |
88ca895d | 1152 | |
6122e4e4 ACM |
1153 | return err; |
1154 | } | |
1155 | ||
d549c769 | 1156 | bool perf_session__has_traces(struct perf_session *self, const char *msg) |
27295592 ACM |
1157 | { |
1158 | if (!(self->sample_type & PERF_SAMPLE_RAW)) { | |
d549c769 ACM |
1159 | pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg); |
1160 | return false; | |
27295592 ACM |
1161 | } |
1162 | ||
d549c769 | 1163 | return true; |
27295592 | 1164 | } |
56b03f3c | 1165 | |
a1645ce1 | 1166 | int perf_session__set_kallsyms_ref_reloc_sym(struct map **maps, |
56b03f3c ACM |
1167 | const char *symbol_name, |
1168 | u64 addr) | |
1169 | { | |
1170 | char *bracket; | |
9de89fe7 | 1171 | enum map_type i; |
a1645ce1 ZY |
1172 | struct ref_reloc_sym *ref; |
1173 | ||
1174 | ref = zalloc(sizeof(struct ref_reloc_sym)); | |
1175 | if (ref == NULL) | |
1176 | return -ENOMEM; | |
56b03f3c | 1177 | |
a1645ce1 ZY |
1178 | ref->name = strdup(symbol_name); |
1179 | if (ref->name == NULL) { | |
1180 | free(ref); | |
56b03f3c | 1181 | return -ENOMEM; |
a1645ce1 | 1182 | } |
56b03f3c | 1183 | |
a1645ce1 | 1184 | bracket = strchr(ref->name, ']'); |
56b03f3c ACM |
1185 | if (bracket) |
1186 | *bracket = '\0'; | |
1187 | ||
a1645ce1 | 1188 | ref->addr = addr; |
9de89fe7 ACM |
1189 | |
1190 | for (i = 0; i < MAP__NR_TYPES; ++i) { | |
a1645ce1 ZY |
1191 | struct kmap *kmap = map__kmap(maps[i]); |
1192 | kmap->ref_reloc_sym = ref; | |
9de89fe7 ACM |
1193 | } |
1194 | ||
56b03f3c ACM |
1195 | return 0; |
1196 | } | |
1f626bc3 ACM |
1197 | |
1198 | size_t perf_session__fprintf_dsos(struct perf_session *self, FILE *fp) | |
1199 | { | |
1200 | return __dsos__fprintf(&self->host_machine.kernel_dsos, fp) + | |
1201 | __dsos__fprintf(&self->host_machine.user_dsos, fp) + | |
1202 | machines__fprintf_dsos(&self->machines, fp); | |
1203 | } | |
f869097e ACM |
1204 | |
1205 | size_t perf_session__fprintf_dsos_buildid(struct perf_session *self, FILE *fp, | |
1206 | bool with_hits) | |
1207 | { | |
1208 | size_t ret = machine__fprintf_dsos_buildid(&self->host_machine, fp, with_hits); | |
1209 | return ret + machines__fprintf_dsos_buildid(&self->machines, fp, with_hits); | |
1210 | } | |
e248de33 ACM |
1211 | |
1212 | size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp) | |
1213 | { | |
1214 | struct perf_evsel *pos; | |
1215 | size_t ret = fprintf(fp, "Aggregated stats:\n"); | |
1216 | ||
1217 | ret += hists__fprintf_nr_events(&session->hists, fp); | |
1218 | ||
1219 | list_for_each_entry(pos, &session->evlist->entries, node) { | |
1220 | ret += fprintf(fp, "%s stats:\n", event_name(pos)); | |
1221 | ret += hists__fprintf_nr_events(&pos->hists, fp); | |
1222 | } | |
1223 | ||
1224 | return ret; | |
1225 | } | |
c0230b2b | 1226 | |
9cbdb702 DA |
1227 | struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session, |
1228 | unsigned int type) | |
1229 | { | |
1230 | struct perf_evsel *pos; | |
1231 | ||
1232 | list_for_each_entry(pos, &session->evlist->entries, node) { | |
1233 | if (pos->attr.type == type) | |
1234 | return pos; | |
1235 | } | |
1236 | return NULL; | |
1237 | } | |
1238 | ||
787bef17 DA |
1239 | void perf_session__print_ip(union perf_event *event, |
1240 | struct perf_sample *sample, | |
1241 | struct perf_session *session, | |
610723f2 | 1242 | int print_sym, int print_dso) |
c0230b2b DA |
1243 | { |
1244 | struct addr_location al; | |
1245 | const char *symname, *dsoname; | |
1246 | struct callchain_cursor *cursor = &session->callchain_cursor; | |
1247 | struct callchain_cursor_node *node; | |
1248 | ||
1249 | if (perf_event__preprocess_sample(event, session, &al, sample, | |
1250 | NULL) < 0) { | |
1251 | error("problem processing %d event, skipping it.\n", | |
1252 | event->header.type); | |
1253 | return; | |
1254 | } | |
1255 | ||
1256 | if (symbol_conf.use_callchain && sample->callchain) { | |
1257 | ||
1258 | if (perf_session__resolve_callchain(session, al.thread, | |
1259 | sample->callchain, NULL) != 0) { | |
1260 | if (verbose) | |
1261 | error("Failed to resolve callchain. Skipping\n"); | |
1262 | return; | |
1263 | } | |
1264 | callchain_cursor_commit(cursor); | |
1265 | ||
1266 | while (1) { | |
1267 | node = callchain_cursor_current(cursor); | |
1268 | if (!node) | |
1269 | break; | |
1270 | ||
787bef17 DA |
1271 | printf("\t%16" PRIx64, node->ip); |
1272 | if (print_sym) { | |
1273 | if (node->sym && node->sym->name) | |
1274 | symname = node->sym->name; | |
1275 | else | |
1276 | symname = ""; | |
c0230b2b | 1277 | |
610723f2 DA |
1278 | printf(" %s", symname); |
1279 | } | |
1280 | if (print_dso) { | |
787bef17 DA |
1281 | if (node->map && node->map->dso && node->map->dso->name) |
1282 | dsoname = node->map->dso->name; | |
1283 | else | |
1284 | dsoname = ""; | |
c0230b2b | 1285 | |
610723f2 | 1286 | printf(" (%s)", dsoname); |
787bef17 DA |
1287 | } |
1288 | printf("\n"); | |
c0230b2b DA |
1289 | |
1290 | callchain_cursor_advance(cursor); | |
1291 | } | |
1292 | ||
1293 | } else { | |
adc4bf99 | 1294 | printf("%16" PRIx64, sample->ip); |
787bef17 DA |
1295 | if (print_sym) { |
1296 | if (al.sym && al.sym->name) | |
1297 | symname = al.sym->name; | |
1298 | else | |
1299 | symname = ""; | |
c0230b2b | 1300 | |
610723f2 DA |
1301 | printf(" %s", symname); |
1302 | } | |
1303 | ||
1304 | if (print_dso) { | |
787bef17 DA |
1305 | if (al.map && al.map->dso && al.map->dso->name) |
1306 | dsoname = al.map->dso->name; | |
1307 | else | |
1308 | dsoname = ""; | |
c0230b2b | 1309 | |
610723f2 | 1310 | printf(" (%s)", dsoname); |
787bef17 | 1311 | } |
c0230b2b DA |
1312 | } |
1313 | } | |
5d67be97 AB |
1314 | |
1315 | int perf_session__cpu_bitmap(struct perf_session *session, | |
1316 | const char *cpu_list, unsigned long *cpu_bitmap) | |
1317 | { | |
1318 | int i; | |
1319 | struct cpu_map *map; | |
1320 | ||
1321 | for (i = 0; i < PERF_TYPE_MAX; ++i) { | |
1322 | struct perf_evsel *evsel; | |
1323 | ||
1324 | evsel = perf_session__find_first_evtype(session, i); | |
1325 | if (!evsel) | |
1326 | continue; | |
1327 | ||
1328 | if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) { | |
1329 | pr_err("File does not contain CPU events. " | |
1330 | "Remove -c option to proceed.\n"); | |
1331 | return -1; | |
1332 | } | |
1333 | } | |
1334 | ||
1335 | map = cpu_map__new(cpu_list); | |
1336 | ||
1337 | for (i = 0; i < map->nr; i++) { | |
1338 | int cpu = map->map[i]; | |
1339 | ||
1340 | if (cpu >= MAX_NR_CPUS) { | |
1341 | pr_err("Requested CPU %d too large. " | |
1342 | "Consider raising MAX_NR_CPUS\n", cpu); | |
1343 | return -1; | |
1344 | } | |
1345 | ||
1346 | set_bit(cpu, cpu_bitmap); | |
1347 | } | |
1348 | ||
1349 | return 0; | |
1350 | } | |
fbe96f29 SE |
1351 | |
1352 | void perf_session__fprintf_info(struct perf_session *session, FILE *fp, | |
1353 | bool full) | |
1354 | { | |
1355 | struct stat st; | |
1356 | int ret; | |
1357 | ||
1358 | if (session == NULL || fp == NULL) | |
1359 | return; | |
1360 | ||
1361 | ret = fstat(session->fd, &st); | |
1362 | if (ret == -1) | |
1363 | return; | |
1364 | ||
1365 | fprintf(fp, "# ========\n"); | |
1366 | fprintf(fp, "# captured on: %s", ctime(&st.st_ctime)); | |
1367 | perf_header__fprintf_info(session, fp, full); | |
1368 | fprintf(fp, "# ========\n#\n"); | |
1369 | } |