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 ACM |
81 | void perf_session__update_sample_type(struct perf_session *self) |
82 | { | |
a91e5431 | 83 | self->sample_type = perf_evlist__sample_type(self->evlist); |
c2a70653 | 84 | self->sample_size = __perf_evsel__sample_size(self->sample_type); |
a91e5431 | 85 | self->sample_id_all = perf_evlist__sample_id_all(self->evlist); |
81e36bff | 86 | self->id_hdr_size = perf_evlist__id_hdr_size(self->evlist); |
9c90a61c ACM |
87 | } |
88 | ||
a1645ce1 ZY |
89 | int perf_session__create_kernel_maps(struct perf_session *self) |
90 | { | |
d118f8ba | 91 | int ret = machine__create_kernel_maps(&self->host_machine); |
a1645ce1 | 92 | |
a1645ce1 | 93 | if (ret >= 0) |
d118f8ba | 94 | ret = machines__create_guest_kernel_maps(&self->machines); |
a1645ce1 ZY |
95 | return ret; |
96 | } | |
97 | ||
076c6e45 ACM |
98 | static void perf_session__destroy_kernel_maps(struct perf_session *self) |
99 | { | |
100 | machine__destroy_kernel_maps(&self->host_machine); | |
101 | machines__destroy_guest_kernel_maps(&self->machines); | |
102 | } | |
103 | ||
21ef97f0 IM |
104 | struct perf_session *perf_session__new(const char *filename, int mode, |
105 | bool force, bool repipe, | |
106 | struct perf_event_ops *ops) | |
94c744b6 | 107 | { |
b3165f41 | 108 | size_t len = filename ? strlen(filename) + 1 : 0; |
94c744b6 ACM |
109 | struct perf_session *self = zalloc(sizeof(*self) + len); |
110 | ||
111 | if (self == NULL) | |
112 | goto out; | |
113 | ||
94c744b6 | 114 | memcpy(self->filename, filename, len); |
55b44629 TG |
115 | /* |
116 | * On 64bit we can mmap the data file in one go. No need for tiny mmap | |
117 | * slices. On 32bit we use 32MB. | |
118 | */ | |
119 | #if BITS_PER_LONG == 64 | |
120 | self->mmap_window = ULLONG_MAX; | |
121 | #else | |
122 | self->mmap_window = 32 * 1024 * 1024ULL; | |
123 | #endif | |
23346f21 | 124 | self->machines = RB_ROOT; |
454c407e | 125 | self->repipe = repipe; |
a1225dec | 126 | INIT_LIST_HEAD(&self->ordered_samples.samples); |
020bb75a | 127 | INIT_LIST_HEAD(&self->ordered_samples.sample_cache); |
5c891f38 | 128 | INIT_LIST_HEAD(&self->ordered_samples.to_free); |
1f626bc3 | 129 | machine__init(&self->host_machine, "", HOST_KERNEL_ID); |
94c744b6 | 130 | |
64abebf7 ACM |
131 | if (mode == O_RDONLY) { |
132 | if (perf_session__open(self, force) < 0) | |
133 | goto out_delete; | |
a91e5431 | 134 | perf_session__update_sample_type(self); |
64abebf7 ACM |
135 | } else if (mode == O_WRONLY) { |
136 | /* | |
137 | * In O_RDONLY mode this will be performed when reading the | |
8115d60c | 138 | * kernel MMAP event, in perf_event__process_mmap(). |
64abebf7 ACM |
139 | */ |
140 | if (perf_session__create_kernel_maps(self) < 0) | |
141 | goto out_delete; | |
142 | } | |
d549c769 | 143 | |
21ef97f0 IM |
144 | if (ops && ops->ordering_requires_timestamps && |
145 | ops->ordered_samples && !self->sample_id_all) { | |
146 | dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n"); | |
147 | ops->ordered_samples = false; | |
148 | } | |
149 | ||
94c744b6 ACM |
150 | out: |
151 | return self; | |
4aa65636 ACM |
152 | out_delete: |
153 | perf_session__delete(self); | |
154 | return NULL; | |
94c744b6 ACM |
155 | } |
156 | ||
b424eba2 | 157 | static void machine__delete_dead_threads(struct machine *machine) |
d65a458b ACM |
158 | { |
159 | struct thread *n, *t; | |
160 | ||
b424eba2 | 161 | list_for_each_entry_safe(t, n, &machine->dead_threads, node) { |
d65a458b ACM |
162 | list_del(&t->node); |
163 | thread__delete(t); | |
164 | } | |
165 | } | |
166 | ||
b424eba2 ACM |
167 | static void perf_session__delete_dead_threads(struct perf_session *session) |
168 | { | |
169 | machine__delete_dead_threads(&session->host_machine); | |
170 | } | |
171 | ||
172 | static void machine__delete_threads(struct machine *self) | |
d65a458b ACM |
173 | { |
174 | struct rb_node *nd = rb_first(&self->threads); | |
175 | ||
176 | while (nd) { | |
177 | struct thread *t = rb_entry(nd, struct thread, rb_node); | |
178 | ||
179 | rb_erase(&t->rb_node, &self->threads); | |
180 | nd = rb_next(nd); | |
181 | thread__delete(t); | |
182 | } | |
183 | } | |
184 | ||
b424eba2 ACM |
185 | static void perf_session__delete_threads(struct perf_session *session) |
186 | { | |
187 | machine__delete_threads(&session->host_machine); | |
188 | } | |
189 | ||
94c744b6 ACM |
190 | void perf_session__delete(struct perf_session *self) |
191 | { | |
076c6e45 | 192 | perf_session__destroy_kernel_maps(self); |
d65a458b ACM |
193 | perf_session__delete_dead_threads(self); |
194 | perf_session__delete_threads(self); | |
195 | machine__exit(&self->host_machine); | |
94c744b6 ACM |
196 | close(self->fd); |
197 | free(self); | |
198 | } | |
a328626b | 199 | |
b424eba2 | 200 | void machine__remove_thread(struct machine *self, struct thread *th) |
720a3aeb | 201 | { |
70597f21 | 202 | self->last_match = NULL; |
720a3aeb ACM |
203 | rb_erase(&th->rb_node, &self->threads); |
204 | /* | |
205 | * We may have references to this thread, for instance in some hist_entry | |
206 | * instances, so just move them to a separate list. | |
207 | */ | |
208 | list_add_tail(&th->node, &self->dead_threads); | |
209 | } | |
210 | ||
a328626b ACM |
211 | static bool symbol__match_parent_regex(struct symbol *sym) |
212 | { | |
213 | if (sym->name && !regexec(&parent_regex, sym->name, 0, NULL, 0)) | |
214 | return 1; | |
215 | ||
216 | return 0; | |
217 | } | |
218 | ||
246d4ce8 | 219 | int perf_session__resolve_callchain(struct perf_session *self, struct perf_evsel *evsel, |
1b3a0e95 FW |
220 | struct thread *thread, |
221 | struct ip_callchain *chain, | |
222 | struct symbol **parent) | |
a328626b ACM |
223 | { |
224 | u8 cpumode = PERF_RECORD_MISC_USER; | |
a328626b | 225 | unsigned int i; |
1b3a0e95 | 226 | int err; |
a328626b | 227 | |
246d4ce8 | 228 | callchain_cursor_reset(&evsel->hists.callchain_cursor); |
a328626b ACM |
229 | |
230 | for (i = 0; i < chain->nr; i++) { | |
d797fdc5 | 231 | u64 ip; |
a328626b ACM |
232 | struct addr_location al; |
233 | ||
d797fdc5 SL |
234 | if (callchain_param.order == ORDER_CALLEE) |
235 | ip = chain->ips[i]; | |
236 | else | |
237 | ip = chain->ips[chain->nr - i - 1]; | |
238 | ||
a328626b ACM |
239 | if (ip >= PERF_CONTEXT_MAX) { |
240 | switch (ip) { | |
241 | case PERF_CONTEXT_HV: | |
242 | cpumode = PERF_RECORD_MISC_HYPERVISOR; break; | |
243 | case PERF_CONTEXT_KERNEL: | |
244 | cpumode = PERF_RECORD_MISC_KERNEL; break; | |
245 | case PERF_CONTEXT_USER: | |
246 | cpumode = PERF_RECORD_MISC_USER; break; | |
247 | default: | |
248 | break; | |
249 | } | |
250 | continue; | |
251 | } | |
252 | ||
a1645ce1 | 253 | al.filtered = false; |
a328626b | 254 | thread__find_addr_location(thread, self, cpumode, |
a1645ce1 | 255 | MAP__FUNCTION, thread->pid, ip, &al, NULL); |
a328626b ACM |
256 | if (al.sym != NULL) { |
257 | if (sort__has_parent && !*parent && | |
258 | symbol__match_parent_regex(al.sym)) | |
259 | *parent = al.sym; | |
d599db3f | 260 | if (!symbol_conf.use_callchain) |
a328626b | 261 | break; |
a328626b | 262 | } |
1b3a0e95 | 263 | |
246d4ce8 | 264 | err = callchain_cursor_append(&evsel->hists.callchain_cursor, |
1b3a0e95 FW |
265 | ip, al.map, al.sym); |
266 | if (err) | |
267 | return err; | |
a328626b ACM |
268 | } |
269 | ||
1b3a0e95 | 270 | return 0; |
a328626b | 271 | } |
06aae590 | 272 | |
8115d60c | 273 | static int process_event_synth_stub(union perf_event *event __used, |
640c03ce ACM |
274 | struct perf_session *session __used) |
275 | { | |
276 | dump_printf(": unhandled!\n"); | |
277 | return 0; | |
278 | } | |
279 | ||
10d0f086 ACM |
280 | static int process_event_synth_attr_stub(union perf_event *event __used, |
281 | struct perf_evlist **pevlist __used) | |
282 | { | |
283 | dump_printf(": unhandled!\n"); | |
284 | return 0; | |
285 | } | |
286 | ||
9e69c210 ACM |
287 | static int process_event_sample_stub(union perf_event *event __used, |
288 | struct perf_sample *sample __used, | |
289 | struct perf_evsel *evsel __used, | |
290 | struct perf_session *session __used) | |
291 | { | |
292 | dump_printf(": unhandled!\n"); | |
293 | return 0; | |
294 | } | |
295 | ||
8115d60c | 296 | static int process_event_stub(union perf_event *event __used, |
8d50e5b4 | 297 | struct perf_sample *sample __used, |
06aae590 ACM |
298 | struct perf_session *session __used) |
299 | { | |
300 | dump_printf(": unhandled!\n"); | |
301 | return 0; | |
302 | } | |
303 | ||
8115d60c | 304 | static int process_finished_round_stub(union perf_event *event __used, |
d6b17beb FW |
305 | struct perf_session *session __used, |
306 | struct perf_event_ops *ops __used) | |
307 | { | |
308 | dump_printf(": unhandled!\n"); | |
309 | return 0; | |
310 | } | |
311 | ||
8115d60c | 312 | static int process_finished_round(union perf_event *event, |
d6b17beb FW |
313 | struct perf_session *session, |
314 | struct perf_event_ops *ops); | |
315 | ||
06aae590 ACM |
316 | static void perf_event_ops__fill_defaults(struct perf_event_ops *handler) |
317 | { | |
55aa640f | 318 | if (handler->sample == NULL) |
9e69c210 | 319 | handler->sample = process_event_sample_stub; |
55aa640f ACM |
320 | if (handler->mmap == NULL) |
321 | handler->mmap = process_event_stub; | |
322 | if (handler->comm == NULL) | |
323 | handler->comm = process_event_stub; | |
324 | if (handler->fork == NULL) | |
325 | handler->fork = process_event_stub; | |
326 | if (handler->exit == NULL) | |
327 | handler->exit = process_event_stub; | |
328 | if (handler->lost == NULL) | |
8115d60c | 329 | handler->lost = perf_event__process_lost; |
55aa640f ACM |
330 | if (handler->read == NULL) |
331 | handler->read = process_event_stub; | |
332 | if (handler->throttle == NULL) | |
333 | handler->throttle = process_event_stub; | |
334 | if (handler->unthrottle == NULL) | |
335 | handler->unthrottle = process_event_stub; | |
2c46dbb5 | 336 | if (handler->attr == NULL) |
10d0f086 | 337 | handler->attr = process_event_synth_attr_stub; |
cd19a035 | 338 | if (handler->event_type == NULL) |
640c03ce | 339 | handler->event_type = process_event_synth_stub; |
9215545e | 340 | if (handler->tracing_data == NULL) |
640c03ce | 341 | handler->tracing_data = process_event_synth_stub; |
c7929e47 | 342 | if (handler->build_id == NULL) |
640c03ce | 343 | handler->build_id = process_event_synth_stub; |
d6b17beb FW |
344 | if (handler->finished_round == NULL) { |
345 | if (handler->ordered_samples) | |
346 | handler->finished_round = process_finished_round; | |
347 | else | |
348 | handler->finished_round = process_finished_round_stub; | |
349 | } | |
06aae590 ACM |
350 | } |
351 | ||
ba21594c ACM |
352 | void mem_bswap_64(void *src, int byte_size) |
353 | { | |
354 | u64 *m = src; | |
355 | ||
356 | while (byte_size > 0) { | |
357 | *m = bswap_64(*m); | |
358 | byte_size -= sizeof(u64); | |
359 | ++m; | |
360 | } | |
361 | } | |
362 | ||
8115d60c | 363 | static void perf_event__all64_swap(union perf_event *event) |
ba21594c | 364 | { |
8115d60c ACM |
365 | struct perf_event_header *hdr = &event->header; |
366 | mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr)); | |
ba21594c ACM |
367 | } |
368 | ||
8115d60c | 369 | static void perf_event__comm_swap(union perf_event *event) |
ba21594c | 370 | { |
8115d60c ACM |
371 | event->comm.pid = bswap_32(event->comm.pid); |
372 | event->comm.tid = bswap_32(event->comm.tid); | |
ba21594c ACM |
373 | } |
374 | ||
8115d60c | 375 | static void perf_event__mmap_swap(union perf_event *event) |
ba21594c | 376 | { |
8115d60c ACM |
377 | event->mmap.pid = bswap_32(event->mmap.pid); |
378 | event->mmap.tid = bswap_32(event->mmap.tid); | |
379 | event->mmap.start = bswap_64(event->mmap.start); | |
380 | event->mmap.len = bswap_64(event->mmap.len); | |
381 | event->mmap.pgoff = bswap_64(event->mmap.pgoff); | |
ba21594c ACM |
382 | } |
383 | ||
8115d60c | 384 | static void perf_event__task_swap(union perf_event *event) |
ba21594c | 385 | { |
8115d60c ACM |
386 | event->fork.pid = bswap_32(event->fork.pid); |
387 | event->fork.tid = bswap_32(event->fork.tid); | |
388 | event->fork.ppid = bswap_32(event->fork.ppid); | |
389 | event->fork.ptid = bswap_32(event->fork.ptid); | |
390 | event->fork.time = bswap_64(event->fork.time); | |
ba21594c ACM |
391 | } |
392 | ||
8115d60c | 393 | static void perf_event__read_swap(union perf_event *event) |
ba21594c | 394 | { |
8115d60c ACM |
395 | event->read.pid = bswap_32(event->read.pid); |
396 | event->read.tid = bswap_32(event->read.tid); | |
397 | event->read.value = bswap_64(event->read.value); | |
398 | event->read.time_enabled = bswap_64(event->read.time_enabled); | |
399 | event->read.time_running = bswap_64(event->read.time_running); | |
400 | event->read.id = bswap_64(event->read.id); | |
ba21594c ACM |
401 | } |
402 | ||
eda3913b DA |
403 | /* exported for swapping attributes in file header */ |
404 | void perf_event__attr_swap(struct perf_event_attr *attr) | |
405 | { | |
406 | attr->type = bswap_32(attr->type); | |
407 | attr->size = bswap_32(attr->size); | |
408 | attr->config = bswap_64(attr->config); | |
409 | attr->sample_period = bswap_64(attr->sample_period); | |
410 | attr->sample_type = bswap_64(attr->sample_type); | |
411 | attr->read_format = bswap_64(attr->read_format); | |
412 | attr->wakeup_events = bswap_32(attr->wakeup_events); | |
413 | attr->bp_type = bswap_32(attr->bp_type); | |
414 | attr->bp_addr = bswap_64(attr->bp_addr); | |
415 | attr->bp_len = bswap_64(attr->bp_len); | |
416 | } | |
417 | ||
418 | static void perf_event__hdr_attr_swap(union perf_event *event) | |
2c46dbb5 TZ |
419 | { |
420 | size_t size; | |
421 | ||
eda3913b | 422 | perf_event__attr_swap(&event->attr.attr); |
2c46dbb5 | 423 | |
8115d60c ACM |
424 | size = event->header.size; |
425 | size -= (void *)&event->attr.id - (void *)event; | |
426 | mem_bswap_64(event->attr.id, size); | |
2c46dbb5 TZ |
427 | } |
428 | ||
8115d60c | 429 | static void perf_event__event_type_swap(union perf_event *event) |
cd19a035 | 430 | { |
8115d60c ACM |
431 | event->event_type.event_type.event_id = |
432 | bswap_64(event->event_type.event_type.event_id); | |
cd19a035 TZ |
433 | } |
434 | ||
8115d60c | 435 | static void perf_event__tracing_data_swap(union perf_event *event) |
9215545e | 436 | { |
8115d60c | 437 | event->tracing_data.size = bswap_32(event->tracing_data.size); |
9215545e TZ |
438 | } |
439 | ||
8115d60c | 440 | typedef void (*perf_event__swap_op)(union perf_event *event); |
ba21594c | 441 | |
8115d60c ACM |
442 | static perf_event__swap_op perf_event__swap_ops[] = { |
443 | [PERF_RECORD_MMAP] = perf_event__mmap_swap, | |
444 | [PERF_RECORD_COMM] = perf_event__comm_swap, | |
445 | [PERF_RECORD_FORK] = perf_event__task_swap, | |
446 | [PERF_RECORD_EXIT] = perf_event__task_swap, | |
447 | [PERF_RECORD_LOST] = perf_event__all64_swap, | |
448 | [PERF_RECORD_READ] = perf_event__read_swap, | |
449 | [PERF_RECORD_SAMPLE] = perf_event__all64_swap, | |
eda3913b | 450 | [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap, |
8115d60c ACM |
451 | [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap, |
452 | [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap, | |
453 | [PERF_RECORD_HEADER_BUILD_ID] = NULL, | |
454 | [PERF_RECORD_HEADER_MAX] = NULL, | |
ba21594c ACM |
455 | }; |
456 | ||
c61e52ee FW |
457 | struct sample_queue { |
458 | u64 timestamp; | |
e4c2df13 | 459 | u64 file_offset; |
8115d60c | 460 | union perf_event *event; |
c61e52ee FW |
461 | struct list_head list; |
462 | }; | |
463 | ||
020bb75a TG |
464 | static void perf_session_free_sample_buffers(struct perf_session *session) |
465 | { | |
466 | struct ordered_samples *os = &session->ordered_samples; | |
467 | ||
5c891f38 | 468 | while (!list_empty(&os->to_free)) { |
020bb75a TG |
469 | struct sample_queue *sq; |
470 | ||
5c891f38 | 471 | sq = list_entry(os->to_free.next, struct sample_queue, list); |
020bb75a TG |
472 | list_del(&sq->list); |
473 | free(sq); | |
474 | } | |
475 | } | |
476 | ||
cbf41645 | 477 | static int perf_session_deliver_event(struct perf_session *session, |
8115d60c | 478 | union perf_event *event, |
8d50e5b4 | 479 | struct perf_sample *sample, |
f74725dc TG |
480 | struct perf_event_ops *ops, |
481 | u64 file_offset); | |
cbf41645 | 482 | |
c61e52ee FW |
483 | static void flush_sample_queue(struct perf_session *s, |
484 | struct perf_event_ops *ops) | |
485 | { | |
a1225dec TG |
486 | struct ordered_samples *os = &s->ordered_samples; |
487 | struct list_head *head = &os->samples; | |
c61e52ee | 488 | struct sample_queue *tmp, *iter; |
8d50e5b4 | 489 | struct perf_sample sample; |
a1225dec TG |
490 | u64 limit = os->next_flush; |
491 | u64 last_ts = os->last_sample ? os->last_sample->timestamp : 0ULL; | |
88660563 | 492 | unsigned idx = 0, progress_next = os->nr_samples / 16; |
5538beca | 493 | int ret; |
c61e52ee | 494 | |
d6b17beb | 495 | if (!ops->ordered_samples || !limit) |
c61e52ee FW |
496 | return; |
497 | ||
498 | list_for_each_entry_safe(iter, tmp, head, list) { | |
499 | if (iter->timestamp > limit) | |
a1225dec | 500 | break; |
c61e52ee | 501 | |
5538beca FW |
502 | ret = perf_session__parse_sample(s, iter->event, &sample); |
503 | if (ret) | |
504 | pr_err("Can't parse sample, err = %d\n", ret); | |
505 | else | |
506 | perf_session_deliver_event(s, iter->event, &sample, ops, | |
507 | iter->file_offset); | |
c61e52ee | 508 | |
a1225dec | 509 | os->last_flush = iter->timestamp; |
c61e52ee | 510 | list_del(&iter->list); |
020bb75a | 511 | list_add(&iter->list, &os->sample_cache); |
88660563 ACM |
512 | if (++idx >= progress_next) { |
513 | progress_next += os->nr_samples / 16; | |
514 | ui_progress__update(idx, os->nr_samples, | |
515 | "Processing time ordered events..."); | |
516 | } | |
c61e52ee | 517 | } |
a1225dec TG |
518 | |
519 | if (list_empty(head)) { | |
520 | os->last_sample = NULL; | |
521 | } else if (last_ts <= limit) { | |
522 | os->last_sample = | |
523 | list_entry(head->prev, struct sample_queue, list); | |
524 | } | |
88660563 ACM |
525 | |
526 | os->nr_samples = 0; | |
c61e52ee FW |
527 | } |
528 | ||
d6b17beb FW |
529 | /* |
530 | * When perf record finishes a pass on every buffers, it records this pseudo | |
531 | * event. | |
532 | * We record the max timestamp t found in the pass n. | |
533 | * Assuming these timestamps are monotonic across cpus, we know that if | |
534 | * a buffer still has events with timestamps below t, they will be all | |
535 | * available and then read in the pass n + 1. | |
536 | * Hence when we start to read the pass n + 2, we can safely flush every | |
537 | * events with timestamps below t. | |
538 | * | |
539 | * ============ PASS n ================= | |
540 | * CPU 0 | CPU 1 | |
541 | * | | |
542 | * cnt1 timestamps | cnt2 timestamps | |
543 | * 1 | 2 | |
544 | * 2 | 3 | |
545 | * - | 4 <--- max recorded | |
546 | * | |
547 | * ============ PASS n + 1 ============== | |
548 | * CPU 0 | CPU 1 | |
549 | * | | |
550 | * cnt1 timestamps | cnt2 timestamps | |
551 | * 3 | 5 | |
552 | * 4 | 6 | |
553 | * 5 | 7 <---- max recorded | |
554 | * | |
555 | * Flush every events below timestamp 4 | |
556 | * | |
557 | * ============ PASS n + 2 ============== | |
558 | * CPU 0 | CPU 1 | |
559 | * | | |
560 | * cnt1 timestamps | cnt2 timestamps | |
561 | * 6 | 8 | |
562 | * 7 | 9 | |
563 | * - | 10 | |
564 | * | |
565 | * Flush every events below timestamp 7 | |
566 | * etc... | |
567 | */ | |
8115d60c | 568 | static int process_finished_round(union perf_event *event __used, |
d6b17beb FW |
569 | struct perf_session *session, |
570 | struct perf_event_ops *ops) | |
571 | { | |
572 | flush_sample_queue(session, ops); | |
573 | session->ordered_samples.next_flush = session->ordered_samples.max_timestamp; | |
574 | ||
575 | return 0; | |
576 | } | |
577 | ||
c61e52ee | 578 | /* The queue is ordered by time */ |
cbf41645 | 579 | static void __queue_event(struct sample_queue *new, struct perf_session *s) |
c61e52ee | 580 | { |
a1225dec TG |
581 | struct ordered_samples *os = &s->ordered_samples; |
582 | struct sample_queue *sample = os->last_sample; | |
583 | u64 timestamp = new->timestamp; | |
584 | struct list_head *p; | |
c61e52ee | 585 | |
88660563 | 586 | ++os->nr_samples; |
a1225dec | 587 | os->last_sample = new; |
c61e52ee | 588 | |
a1225dec TG |
589 | if (!sample) { |
590 | list_add(&new->list, &os->samples); | |
591 | os->max_timestamp = timestamp; | |
c61e52ee FW |
592 | return; |
593 | } | |
594 | ||
595 | /* | |
a1225dec TG |
596 | * last_sample might point to some random place in the list as it's |
597 | * the last queued event. We expect that the new event is close to | |
598 | * this. | |
c61e52ee | 599 | */ |
a1225dec TG |
600 | if (sample->timestamp <= timestamp) { |
601 | while (sample->timestamp <= timestamp) { | |
602 | p = sample->list.next; | |
603 | if (p == &os->samples) { | |
604 | list_add_tail(&new->list, &os->samples); | |
605 | os->max_timestamp = timestamp; | |
606 | return; | |
607 | } | |
608 | sample = list_entry(p, struct sample_queue, list); | |
609 | } | |
610 | list_add_tail(&new->list, &sample->list); | |
611 | } else { | |
612 | while (sample->timestamp > timestamp) { | |
613 | p = sample->list.prev; | |
614 | if (p == &os->samples) { | |
615 | list_add(&new->list, &os->samples); | |
616 | return; | |
617 | } | |
618 | sample = list_entry(p, struct sample_queue, list); | |
619 | } | |
620 | list_add(&new->list, &sample->list); | |
621 | } | |
c61e52ee FW |
622 | } |
623 | ||
5c891f38 TG |
624 | #define MAX_SAMPLE_BUFFER (64 * 1024 / sizeof(struct sample_queue)) |
625 | ||
8115d60c | 626 | static int perf_session_queue_event(struct perf_session *s, union perf_event *event, |
8d50e5b4 | 627 | struct perf_sample *sample, u64 file_offset) |
c61e52ee | 628 | { |
5c891f38 TG |
629 | struct ordered_samples *os = &s->ordered_samples; |
630 | struct list_head *sc = &os->sample_cache; | |
8d50e5b4 | 631 | u64 timestamp = sample->time; |
c61e52ee | 632 | struct sample_queue *new; |
c61e52ee | 633 | |
79a14c1f | 634 | if (!timestamp || timestamp == ~0ULL) |
cbf41645 TG |
635 | return -ETIME; |
636 | ||
c61e52ee FW |
637 | if (timestamp < s->ordered_samples.last_flush) { |
638 | printf("Warning: Timestamp below last timeslice flush\n"); | |
639 | return -EINVAL; | |
640 | } | |
641 | ||
020bb75a TG |
642 | if (!list_empty(sc)) { |
643 | new = list_entry(sc->next, struct sample_queue, list); | |
644 | list_del(&new->list); | |
5c891f38 TG |
645 | } else if (os->sample_buffer) { |
646 | new = os->sample_buffer + os->sample_buffer_idx; | |
647 | if (++os->sample_buffer_idx == MAX_SAMPLE_BUFFER) | |
648 | os->sample_buffer = NULL; | |
020bb75a | 649 | } else { |
5c891f38 TG |
650 | os->sample_buffer = malloc(MAX_SAMPLE_BUFFER * sizeof(*new)); |
651 | if (!os->sample_buffer) | |
020bb75a | 652 | return -ENOMEM; |
5c891f38 TG |
653 | list_add(&os->sample_buffer->list, &os->to_free); |
654 | os->sample_buffer_idx = 2; | |
655 | new = os->sample_buffer + 1; | |
020bb75a | 656 | } |
c61e52ee FW |
657 | |
658 | new->timestamp = timestamp; | |
e4c2df13 | 659 | new->file_offset = file_offset; |
fe174207 | 660 | new->event = event; |
c61e52ee | 661 | |
cbf41645 | 662 | __queue_event(new, s); |
640c03ce | 663 | |
640c03ce ACM |
664 | return 0; |
665 | } | |
c61e52ee | 666 | |
8d50e5b4 | 667 | static void callchain__printf(struct perf_sample *sample) |
640c03ce ACM |
668 | { |
669 | unsigned int i; | |
c61e52ee | 670 | |
9486aa38 | 671 | printf("... chain: nr:%" PRIu64 "\n", sample->callchain->nr); |
640c03ce ACM |
672 | |
673 | for (i = 0; i < sample->callchain->nr; i++) | |
9486aa38 ACM |
674 | printf("..... %2d: %016" PRIx64 "\n", |
675 | i, sample->callchain->ips[i]); | |
c61e52ee FW |
676 | } |
677 | ||
9c90a61c | 678 | static void perf_session__print_tstamp(struct perf_session *session, |
8115d60c | 679 | union perf_event *event, |
8d50e5b4 | 680 | struct perf_sample *sample) |
9c90a61c ACM |
681 | { |
682 | if (event->header.type != PERF_RECORD_SAMPLE && | |
683 | !session->sample_id_all) { | |
684 | fputs("-1 -1 ", stdout); | |
685 | return; | |
686 | } | |
687 | ||
688 | if ((session->sample_type & PERF_SAMPLE_CPU)) | |
689 | printf("%u ", sample->cpu); | |
690 | ||
691 | if (session->sample_type & PERF_SAMPLE_TIME) | |
9486aa38 | 692 | printf("%" PRIu64 " ", sample->time); |
9c90a61c ACM |
693 | } |
694 | ||
8115d60c | 695 | static void dump_event(struct perf_session *session, union perf_event *event, |
8d50e5b4 | 696 | u64 file_offset, struct perf_sample *sample) |
9aefcab0 TG |
697 | { |
698 | if (!dump_trace) | |
699 | return; | |
700 | ||
9486aa38 ACM |
701 | printf("\n%#" PRIx64 " [%#x]: event: %d\n", |
702 | file_offset, event->header.size, event->header.type); | |
9aefcab0 TG |
703 | |
704 | trace_event(event); | |
705 | ||
706 | if (sample) | |
707 | perf_session__print_tstamp(session, event, sample); | |
708 | ||
9486aa38 | 709 | printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset, |
8115d60c | 710 | event->header.size, perf_event__name(event->header.type)); |
9aefcab0 TG |
711 | } |
712 | ||
8115d60c | 713 | static void dump_sample(struct perf_session *session, union perf_event *event, |
8d50e5b4 | 714 | struct perf_sample *sample) |
9aefcab0 | 715 | { |
ddbc24b7 ACM |
716 | if (!dump_trace) |
717 | return; | |
718 | ||
7cec0922 | 719 | printf("(IP, %d): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n", |
9486aa38 | 720 | event->header.misc, sample->pid, sample->tid, sample->ip, |
7cec0922 | 721 | sample->period, sample->addr); |
9aefcab0 TG |
722 | |
723 | if (session->sample_type & PERF_SAMPLE_CALLCHAIN) | |
ddbc24b7 | 724 | callchain__printf(sample); |
9aefcab0 TG |
725 | } |
726 | ||
cbf41645 | 727 | static int perf_session_deliver_event(struct perf_session *session, |
8115d60c | 728 | union perf_event *event, |
8d50e5b4 | 729 | struct perf_sample *sample, |
f74725dc | 730 | struct perf_event_ops *ops, |
532e7269 | 731 | u64 file_offset) |
cbf41645 | 732 | { |
9e69c210 ACM |
733 | struct perf_evsel *evsel; |
734 | ||
532e7269 TG |
735 | dump_event(session, event, file_offset, sample); |
736 | ||
7b27509f ACM |
737 | evsel = perf_evlist__id2evsel(session->evlist, sample->id); |
738 | if (evsel != NULL && event->header.type != PERF_RECORD_SAMPLE) { | |
739 | /* | |
740 | * XXX We're leaving PERF_RECORD_SAMPLE unnacounted here | |
741 | * because the tools right now may apply filters, discarding | |
742 | * some of the samples. For consistency, in the future we | |
743 | * should have something like nr_filtered_samples and remove | |
744 | * the sample->period from total_sample_period, etc, KISS for | |
745 | * now tho. | |
746 | * | |
747 | * Also testing against NULL allows us to handle files without | |
748 | * attr.sample_id_all and/or without PERF_SAMPLE_ID. In the | |
749 | * future probably it'll be a good idea to restrict event | |
750 | * processing via perf_session to files with both set. | |
751 | */ | |
752 | hists__inc_nr_events(&evsel->hists, event->header.type); | |
753 | } | |
754 | ||
cbf41645 TG |
755 | switch (event->header.type) { |
756 | case PERF_RECORD_SAMPLE: | |
532e7269 | 757 | dump_sample(session, event, sample); |
9e69c210 ACM |
758 | if (evsel == NULL) { |
759 | ++session->hists.stats.nr_unknown_id; | |
760 | return -1; | |
761 | } | |
762 | return ops->sample(event, sample, evsel, session); | |
cbf41645 TG |
763 | case PERF_RECORD_MMAP: |
764 | return ops->mmap(event, sample, session); | |
765 | case PERF_RECORD_COMM: | |
766 | return ops->comm(event, sample, session); | |
767 | case PERF_RECORD_FORK: | |
768 | return ops->fork(event, sample, session); | |
769 | case PERF_RECORD_EXIT: | |
770 | return ops->exit(event, sample, session); | |
771 | case PERF_RECORD_LOST: | |
772 | return ops->lost(event, sample, session); | |
773 | case PERF_RECORD_READ: | |
774 | return ops->read(event, sample, session); | |
775 | case PERF_RECORD_THROTTLE: | |
776 | return ops->throttle(event, sample, session); | |
777 | case PERF_RECORD_UNTHROTTLE: | |
778 | return ops->unthrottle(event, sample, session); | |
779 | default: | |
780 | ++session->hists.stats.nr_unknown_events; | |
781 | return -1; | |
782 | } | |
783 | } | |
784 | ||
3dfc2c0a | 785 | static int perf_session__preprocess_sample(struct perf_session *session, |
8115d60c | 786 | union perf_event *event, struct perf_sample *sample) |
3dfc2c0a TG |
787 | { |
788 | if (event->header.type != PERF_RECORD_SAMPLE || | |
789 | !(session->sample_type & PERF_SAMPLE_CALLCHAIN)) | |
790 | return 0; | |
791 | ||
792 | if (!ip_callchain__valid(sample->callchain, event)) { | |
793 | pr_debug("call-chain problem with event, skipping it.\n"); | |
794 | ++session->hists.stats.nr_invalid_chains; | |
795 | session->hists.stats.total_invalid_chains += sample->period; | |
796 | return -EINVAL; | |
797 | } | |
798 | return 0; | |
799 | } | |
800 | ||
8115d60c | 801 | static int perf_session__process_user_event(struct perf_session *session, union perf_event *event, |
ba74f064 | 802 | struct perf_event_ops *ops, u64 file_offset) |
06aae590 | 803 | { |
10d0f086 ACM |
804 | int err; |
805 | ||
ba74f064 | 806 | dump_event(session, event, file_offset, NULL); |
06aae590 | 807 | |
cbf41645 | 808 | /* These events are processed right away */ |
06aae590 | 809 | switch (event->header.type) { |
2c46dbb5 | 810 | case PERF_RECORD_HEADER_ATTR: |
10d0f086 ACM |
811 | err = ops->attr(event, &session->evlist); |
812 | if (err == 0) | |
813 | perf_session__update_sample_type(session); | |
814 | return err; | |
cd19a035 | 815 | case PERF_RECORD_HEADER_EVENT_TYPE: |
cbf41645 | 816 | return ops->event_type(event, session); |
9215545e TZ |
817 | case PERF_RECORD_HEADER_TRACING_DATA: |
818 | /* setup for reading amidst mmap */ | |
cbf41645 TG |
819 | lseek(session->fd, file_offset, SEEK_SET); |
820 | return ops->tracing_data(event, session); | |
c7929e47 | 821 | case PERF_RECORD_HEADER_BUILD_ID: |
cbf41645 | 822 | return ops->build_id(event, session); |
d6b17beb | 823 | case PERF_RECORD_FINISHED_ROUND: |
cbf41645 | 824 | return ops->finished_round(event, session, ops); |
06aae590 | 825 | default: |
ba74f064 | 826 | return -EINVAL; |
06aae590 | 827 | } |
ba74f064 TG |
828 | } |
829 | ||
830 | static int perf_session__process_event(struct perf_session *session, | |
8115d60c | 831 | union perf_event *event, |
ba74f064 TG |
832 | struct perf_event_ops *ops, |
833 | u64 file_offset) | |
834 | { | |
8d50e5b4 | 835 | struct perf_sample sample; |
ba74f064 TG |
836 | int ret; |
837 | ||
8115d60c ACM |
838 | if (session->header.needs_swap && |
839 | perf_event__swap_ops[event->header.type]) | |
840 | perf_event__swap_ops[event->header.type](event); | |
ba74f064 TG |
841 | |
842 | if (event->header.type >= PERF_RECORD_HEADER_MAX) | |
843 | return -EINVAL; | |
844 | ||
845 | hists__inc_nr_events(&session->hists, event->header.type); | |
846 | ||
847 | if (event->header.type >= PERF_RECORD_USER_TYPE_START) | |
848 | return perf_session__process_user_event(session, event, ops, file_offset); | |
cbf41645 | 849 | |
3dfc2c0a TG |
850 | /* |
851 | * For all kernel events we get the sample data | |
852 | */ | |
5538beca FW |
853 | ret = perf_session__parse_sample(session, event, &sample); |
854 | if (ret) | |
855 | return ret; | |
3dfc2c0a TG |
856 | |
857 | /* Preprocess sample records - precheck callchains */ | |
858 | if (perf_session__preprocess_sample(session, event, &sample)) | |
859 | return 0; | |
860 | ||
cbf41645 | 861 | if (ops->ordered_samples) { |
e4c2df13 TG |
862 | ret = perf_session_queue_event(session, event, &sample, |
863 | file_offset); | |
cbf41645 TG |
864 | if (ret != -ETIME) |
865 | return ret; | |
866 | } | |
867 | ||
f74725dc TG |
868 | return perf_session_deliver_event(session, event, &sample, ops, |
869 | file_offset); | |
06aae590 ACM |
870 | } |
871 | ||
ba21594c ACM |
872 | void perf_event_header__bswap(struct perf_event_header *self) |
873 | { | |
874 | self->type = bswap_32(self->type); | |
875 | self->misc = bswap_16(self->misc); | |
876 | self->size = bswap_16(self->size); | |
877 | } | |
878 | ||
b424eba2 ACM |
879 | struct thread *perf_session__findnew(struct perf_session *session, pid_t pid) |
880 | { | |
881 | return machine__findnew_thread(&session->host_machine, pid); | |
882 | } | |
883 | ||
06aae590 ACM |
884 | static struct thread *perf_session__register_idle_thread(struct perf_session *self) |
885 | { | |
886 | struct thread *thread = perf_session__findnew(self, 0); | |
887 | ||
888 | if (thread == NULL || thread__set_comm(thread, "swapper")) { | |
889 | pr_err("problem inserting idle task.\n"); | |
890 | thread = NULL; | |
891 | } | |
892 | ||
893 | return thread; | |
894 | } | |
895 | ||
11095994 ACM |
896 | static void perf_session__warn_about_errors(const struct perf_session *session, |
897 | const struct perf_event_ops *ops) | |
898 | { | |
8115d60c | 899 | if (ops->lost == perf_event__process_lost && |
7b27509f ACM |
900 | session->hists.stats.nr_events[PERF_RECORD_LOST] != 0) { |
901 | ui__warning("Processed %d events and lost %d chunks!\n\n" | |
902 | "Check IO/CPU overload!\n\n", | |
903 | session->hists.stats.nr_events[0], | |
904 | session->hists.stats.nr_events[PERF_RECORD_LOST]); | |
11095994 ACM |
905 | } |
906 | ||
907 | if (session->hists.stats.nr_unknown_events != 0) { | |
908 | ui__warning("Found %u unknown events!\n\n" | |
909 | "Is this an older tool processing a perf.data " | |
910 | "file generated by a more recent tool?\n\n" | |
911 | "If that is not the case, consider " | |
912 | "reporting to linux-kernel@vger.kernel.org.\n\n", | |
913 | session->hists.stats.nr_unknown_events); | |
914 | } | |
915 | ||
9e69c210 ACM |
916 | if (session->hists.stats.nr_unknown_id != 0) { |
917 | ui__warning("%u samples with id not present in the header\n", | |
918 | session->hists.stats.nr_unknown_id); | |
919 | } | |
920 | ||
11095994 ACM |
921 | if (session->hists.stats.nr_invalid_chains != 0) { |
922 | ui__warning("Found invalid callchains!\n\n" | |
923 | "%u out of %u events were discarded for this reason.\n\n" | |
924 | "Consider reporting to linux-kernel@vger.kernel.org.\n\n", | |
925 | session->hists.stats.nr_invalid_chains, | |
926 | session->hists.stats.nr_events[PERF_RECORD_SAMPLE]); | |
927 | } | |
928 | } | |
929 | ||
8dc58101 TZ |
930 | #define session_done() (*(volatile int *)(&session_done)) |
931 | volatile int session_done; | |
932 | ||
933 | static int __perf_session__process_pipe_events(struct perf_session *self, | |
934 | struct perf_event_ops *ops) | |
935 | { | |
8115d60c | 936 | union perf_event event; |
8dc58101 TZ |
937 | uint32_t size; |
938 | int skip = 0; | |
939 | u64 head; | |
940 | int err; | |
941 | void *p; | |
942 | ||
943 | perf_event_ops__fill_defaults(ops); | |
944 | ||
945 | head = 0; | |
946 | more: | |
1e7972cc | 947 | err = readn(self->fd, &event, sizeof(struct perf_event_header)); |
8dc58101 TZ |
948 | if (err <= 0) { |
949 | if (err == 0) | |
950 | goto done; | |
951 | ||
952 | pr_err("failed to read event header\n"); | |
953 | goto out_err; | |
954 | } | |
955 | ||
956 | if (self->header.needs_swap) | |
957 | perf_event_header__bswap(&event.header); | |
958 | ||
959 | size = event.header.size; | |
960 | if (size == 0) | |
961 | size = 8; | |
962 | ||
963 | p = &event; | |
964 | p += sizeof(struct perf_event_header); | |
965 | ||
794e43b5 | 966 | if (size - sizeof(struct perf_event_header)) { |
1e7972cc | 967 | err = readn(self->fd, p, size - sizeof(struct perf_event_header)); |
794e43b5 TZ |
968 | if (err <= 0) { |
969 | if (err == 0) { | |
970 | pr_err("unexpected end of event stream\n"); | |
971 | goto done; | |
972 | } | |
8dc58101 | 973 | |
794e43b5 TZ |
974 | pr_err("failed to read event data\n"); |
975 | goto out_err; | |
976 | } | |
8dc58101 TZ |
977 | } |
978 | ||
979 | if (size == 0 || | |
0331ee0c | 980 | (skip = perf_session__process_event(self, &event, ops, head)) < 0) { |
9486aa38 | 981 | dump_printf("%#" PRIx64 " [%#x]: skipping unknown header type: %d\n", |
8dc58101 TZ |
982 | head, event.header.size, event.header.type); |
983 | /* | |
984 | * assume we lost track of the stream, check alignment, and | |
985 | * increment a single u64 in the hope to catch on again 'soon'. | |
986 | */ | |
987 | if (unlikely(head & 7)) | |
988 | head &= ~7ULL; | |
989 | ||
990 | size = 8; | |
991 | } | |
992 | ||
993 | head += size; | |
994 | ||
8dc58101 TZ |
995 | if (skip > 0) |
996 | head += skip; | |
997 | ||
998 | if (!session_done()) | |
999 | goto more; | |
1000 | done: | |
1001 | err = 0; | |
1002 | out_err: | |
11095994 | 1003 | perf_session__warn_about_errors(self, ops); |
020bb75a | 1004 | perf_session_free_sample_buffers(self); |
8dc58101 TZ |
1005 | return err; |
1006 | } | |
1007 | ||
998bedc8 FW |
1008 | static union perf_event * |
1009 | fetch_mmaped_event(struct perf_session *session, | |
1010 | u64 head, size_t mmap_size, char *buf) | |
1011 | { | |
1012 | union perf_event *event; | |
1013 | ||
1014 | /* | |
1015 | * Ensure we have enough space remaining to read | |
1016 | * the size of the event in the headers. | |
1017 | */ | |
1018 | if (head + sizeof(event->header) > mmap_size) | |
1019 | return NULL; | |
1020 | ||
1021 | event = (union perf_event *)(buf + head); | |
1022 | ||
1023 | if (session->header.needs_swap) | |
1024 | perf_event_header__bswap(&event->header); | |
1025 | ||
1026 | if (head + event->header.size > mmap_size) | |
1027 | return NULL; | |
1028 | ||
1029 | return event; | |
1030 | } | |
1031 | ||
0331ee0c | 1032 | int __perf_session__process_events(struct perf_session *session, |
6122e4e4 ACM |
1033 | u64 data_offset, u64 data_size, |
1034 | u64 file_size, struct perf_event_ops *ops) | |
06aae590 | 1035 | { |
55b44629 | 1036 | u64 head, page_offset, file_offset, file_pos, progress_next; |
fe174207 | 1037 | int err, mmap_prot, mmap_flags, map_idx = 0; |
55b44629 | 1038 | size_t page_size, mmap_size; |
fe174207 | 1039 | char *buf, *mmaps[8]; |
8115d60c | 1040 | union perf_event *event; |
06aae590 | 1041 | uint32_t size; |
0331ee0c | 1042 | |
06aae590 ACM |
1043 | perf_event_ops__fill_defaults(ops); |
1044 | ||
1b75962e | 1045 | page_size = sysconf(_SC_PAGESIZE); |
06aae590 | 1046 | |
0331ee0c TG |
1047 | page_offset = page_size * (data_offset / page_size); |
1048 | file_offset = page_offset; | |
1049 | head = data_offset - page_offset; | |
06aae590 | 1050 | |
d6513281 TG |
1051 | if (data_offset + data_size < file_size) |
1052 | file_size = data_offset + data_size; | |
1053 | ||
55b44629 | 1054 | progress_next = file_size / 16; |
55b44629 TG |
1055 | |
1056 | mmap_size = session->mmap_window; | |
1057 | if (mmap_size > file_size) | |
1058 | mmap_size = file_size; | |
1059 | ||
fe174207 TG |
1060 | memset(mmaps, 0, sizeof(mmaps)); |
1061 | ||
ba21594c ACM |
1062 | mmap_prot = PROT_READ; |
1063 | mmap_flags = MAP_SHARED; | |
1064 | ||
0331ee0c | 1065 | if (session->header.needs_swap) { |
ba21594c ACM |
1066 | mmap_prot |= PROT_WRITE; |
1067 | mmap_flags = MAP_PRIVATE; | |
1068 | } | |
06aae590 | 1069 | remap: |
55b44629 TG |
1070 | buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, session->fd, |
1071 | file_offset); | |
06aae590 ACM |
1072 | if (buf == MAP_FAILED) { |
1073 | pr_err("failed to mmap file\n"); | |
1074 | err = -errno; | |
1075 | goto out_err; | |
1076 | } | |
fe174207 TG |
1077 | mmaps[map_idx] = buf; |
1078 | map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1); | |
d6513281 | 1079 | file_pos = file_offset + head; |
06aae590 ACM |
1080 | |
1081 | more: | |
998bedc8 FW |
1082 | event = fetch_mmaped_event(session, head, mmap_size, buf); |
1083 | if (!event) { | |
fe174207 TG |
1084 | if (mmaps[map_idx]) { |
1085 | munmap(mmaps[map_idx], mmap_size); | |
1086 | mmaps[map_idx] = NULL; | |
1087 | } | |
06aae590 | 1088 | |
0331ee0c TG |
1089 | page_offset = page_size * (head / page_size); |
1090 | file_offset += page_offset; | |
1091 | head -= page_offset; | |
06aae590 ACM |
1092 | goto remap; |
1093 | } | |
1094 | ||
1095 | size = event->header.size; | |
1096 | ||
d6513281 TG |
1097 | if (size == 0 || |
1098 | perf_session__process_event(session, event, ops, file_pos) < 0) { | |
9486aa38 | 1099 | dump_printf("%#" PRIx64 " [%#x]: skipping unknown header type: %d\n", |
0331ee0c | 1100 | file_offset + head, event->header.size, |
06aae590 ACM |
1101 | event->header.type); |
1102 | /* | |
1103 | * assume we lost track of the stream, check alignment, and | |
1104 | * increment a single u64 in the hope to catch on again 'soon'. | |
1105 | */ | |
1106 | if (unlikely(head & 7)) | |
1107 | head &= ~7ULL; | |
1108 | ||
1109 | size = 8; | |
1110 | } | |
1111 | ||
1112 | head += size; | |
d6513281 | 1113 | file_pos += size; |
06aae590 | 1114 | |
55b44629 TG |
1115 | if (file_pos >= progress_next) { |
1116 | progress_next += file_size / 16; | |
ca59bcbc ACM |
1117 | ui_progress__update(file_pos, file_size, |
1118 | "Processing events..."); | |
55b44629 TG |
1119 | } |
1120 | ||
d6513281 | 1121 | if (file_pos < file_size) |
06aae590 | 1122 | goto more; |
d6513281 | 1123 | |
06aae590 | 1124 | err = 0; |
c61e52ee | 1125 | /* do the final flush for ordered samples */ |
0331ee0c TG |
1126 | session->ordered_samples.next_flush = ULLONG_MAX; |
1127 | flush_sample_queue(session, ops); | |
06aae590 | 1128 | out_err: |
11095994 | 1129 | perf_session__warn_about_errors(session, ops); |
020bb75a | 1130 | perf_session_free_sample_buffers(session); |
06aae590 ACM |
1131 | return err; |
1132 | } | |
27295592 | 1133 | |
6122e4e4 ACM |
1134 | int perf_session__process_events(struct perf_session *self, |
1135 | struct perf_event_ops *ops) | |
1136 | { | |
1137 | int err; | |
1138 | ||
1139 | if (perf_session__register_idle_thread(self) == NULL) | |
1140 | return -ENOMEM; | |
1141 | ||
8dc58101 TZ |
1142 | if (!self->fd_pipe) |
1143 | err = __perf_session__process_events(self, | |
1144 | self->header.data_offset, | |
1145 | self->header.data_size, | |
1146 | self->size, ops); | |
1147 | else | |
1148 | err = __perf_session__process_pipe_events(self, ops); | |
88ca895d | 1149 | |
6122e4e4 ACM |
1150 | return err; |
1151 | } | |
1152 | ||
d549c769 | 1153 | bool perf_session__has_traces(struct perf_session *self, const char *msg) |
27295592 ACM |
1154 | { |
1155 | if (!(self->sample_type & PERF_SAMPLE_RAW)) { | |
d549c769 ACM |
1156 | pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg); |
1157 | return false; | |
27295592 ACM |
1158 | } |
1159 | ||
d549c769 | 1160 | return true; |
27295592 | 1161 | } |
56b03f3c | 1162 | |
a1645ce1 | 1163 | int perf_session__set_kallsyms_ref_reloc_sym(struct map **maps, |
56b03f3c ACM |
1164 | const char *symbol_name, |
1165 | u64 addr) | |
1166 | { | |
1167 | char *bracket; | |
9de89fe7 | 1168 | enum map_type i; |
a1645ce1 ZY |
1169 | struct ref_reloc_sym *ref; |
1170 | ||
1171 | ref = zalloc(sizeof(struct ref_reloc_sym)); | |
1172 | if (ref == NULL) | |
1173 | return -ENOMEM; | |
56b03f3c | 1174 | |
a1645ce1 ZY |
1175 | ref->name = strdup(symbol_name); |
1176 | if (ref->name == NULL) { | |
1177 | free(ref); | |
56b03f3c | 1178 | return -ENOMEM; |
a1645ce1 | 1179 | } |
56b03f3c | 1180 | |
a1645ce1 | 1181 | bracket = strchr(ref->name, ']'); |
56b03f3c ACM |
1182 | if (bracket) |
1183 | *bracket = '\0'; | |
1184 | ||
a1645ce1 | 1185 | ref->addr = addr; |
9de89fe7 ACM |
1186 | |
1187 | for (i = 0; i < MAP__NR_TYPES; ++i) { | |
a1645ce1 ZY |
1188 | struct kmap *kmap = map__kmap(maps[i]); |
1189 | kmap->ref_reloc_sym = ref; | |
9de89fe7 ACM |
1190 | } |
1191 | ||
56b03f3c ACM |
1192 | return 0; |
1193 | } | |
1f626bc3 ACM |
1194 | |
1195 | size_t perf_session__fprintf_dsos(struct perf_session *self, FILE *fp) | |
1196 | { | |
1197 | return __dsos__fprintf(&self->host_machine.kernel_dsos, fp) + | |
1198 | __dsos__fprintf(&self->host_machine.user_dsos, fp) + | |
1199 | machines__fprintf_dsos(&self->machines, fp); | |
1200 | } | |
f869097e ACM |
1201 | |
1202 | size_t perf_session__fprintf_dsos_buildid(struct perf_session *self, FILE *fp, | |
1203 | bool with_hits) | |
1204 | { | |
1205 | size_t ret = machine__fprintf_dsos_buildid(&self->host_machine, fp, with_hits); | |
1206 | return ret + machines__fprintf_dsos_buildid(&self->machines, fp, with_hits); | |
1207 | } | |
e248de33 ACM |
1208 | |
1209 | size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp) | |
1210 | { | |
1211 | struct perf_evsel *pos; | |
1212 | size_t ret = fprintf(fp, "Aggregated stats:\n"); | |
1213 | ||
1214 | ret += hists__fprintf_nr_events(&session->hists, fp); | |
1215 | ||
1216 | list_for_each_entry(pos, &session->evlist->entries, node) { | |
1217 | ret += fprintf(fp, "%s stats:\n", event_name(pos)); | |
1218 | ret += hists__fprintf_nr_events(&pos->hists, fp); | |
1219 | } | |
1220 | ||
1221 | return ret; | |
1222 | } | |
c0230b2b | 1223 | |
b424eba2 ACM |
1224 | size_t perf_session__fprintf(struct perf_session *session, FILE *fp) |
1225 | { | |
1226 | /* | |
1227 | * FIXME: Here we have to actually print all the machines in this | |
1228 | * session, not just the host... | |
1229 | */ | |
1230 | return machine__fprintf(&session->host_machine, fp); | |
1231 | } | |
1232 | ||
1233 | void perf_session__remove_thread(struct perf_session *session, | |
1234 | struct thread *th) | |
1235 | { | |
1236 | /* | |
1237 | * FIXME: This one makes no sense, we need to remove the thread from | |
1238 | * the machine it belongs to, perf_session can have many machines, so | |
1239 | * doing it always on ->host_machine is wrong. Fix when auditing all | |
1240 | * the 'perf kvm' code. | |
1241 | */ | |
1242 | machine__remove_thread(&session->host_machine, th); | |
1243 | } | |
1244 | ||
9cbdb702 DA |
1245 | struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session, |
1246 | unsigned int type) | |
1247 | { | |
1248 | struct perf_evsel *pos; | |
1249 | ||
1250 | list_for_each_entry(pos, &session->evlist->entries, node) { | |
1251 | if (pos->attr.type == type) | |
1252 | return pos; | |
1253 | } | |
1254 | return NULL; | |
1255 | } | |
1256 | ||
246d4ce8 | 1257 | void perf_session__print_ip(union perf_event *event, struct perf_evsel *evsel, |
787bef17 DA |
1258 | struct perf_sample *sample, |
1259 | struct perf_session *session, | |
610723f2 | 1260 | int print_sym, int print_dso) |
c0230b2b DA |
1261 | { |
1262 | struct addr_location al; | |
1263 | const char *symname, *dsoname; | |
246d4ce8 | 1264 | struct callchain_cursor *cursor = &evsel->hists.callchain_cursor; |
c0230b2b DA |
1265 | struct callchain_cursor_node *node; |
1266 | ||
1267 | if (perf_event__preprocess_sample(event, session, &al, sample, | |
1268 | NULL) < 0) { | |
1269 | error("problem processing %d event, skipping it.\n", | |
1270 | event->header.type); | |
1271 | return; | |
1272 | } | |
1273 | ||
1274 | if (symbol_conf.use_callchain && sample->callchain) { | |
1275 | ||
246d4ce8 | 1276 | if (perf_session__resolve_callchain(session, evsel, al.thread, |
c0230b2b DA |
1277 | sample->callchain, NULL) != 0) { |
1278 | if (verbose) | |
1279 | error("Failed to resolve callchain. Skipping\n"); | |
1280 | return; | |
1281 | } | |
1282 | callchain_cursor_commit(cursor); | |
1283 | ||
1284 | while (1) { | |
1285 | node = callchain_cursor_current(cursor); | |
1286 | if (!node) | |
1287 | break; | |
1288 | ||
787bef17 DA |
1289 | printf("\t%16" PRIx64, node->ip); |
1290 | if (print_sym) { | |
1291 | if (node->sym && node->sym->name) | |
1292 | symname = node->sym->name; | |
1293 | else | |
1294 | symname = ""; | |
c0230b2b | 1295 | |
610723f2 DA |
1296 | printf(" %s", symname); |
1297 | } | |
1298 | if (print_dso) { | |
787bef17 DA |
1299 | if (node->map && node->map->dso && node->map->dso->name) |
1300 | dsoname = node->map->dso->name; | |
1301 | else | |
1302 | dsoname = ""; | |
c0230b2b | 1303 | |
610723f2 | 1304 | printf(" (%s)", dsoname); |
787bef17 DA |
1305 | } |
1306 | printf("\n"); | |
c0230b2b DA |
1307 | |
1308 | callchain_cursor_advance(cursor); | |
1309 | } | |
1310 | ||
1311 | } else { | |
adc4bf99 | 1312 | printf("%16" PRIx64, sample->ip); |
787bef17 DA |
1313 | if (print_sym) { |
1314 | if (al.sym && al.sym->name) | |
1315 | symname = al.sym->name; | |
1316 | else | |
1317 | symname = ""; | |
c0230b2b | 1318 | |
610723f2 DA |
1319 | printf(" %s", symname); |
1320 | } | |
1321 | ||
1322 | if (print_dso) { | |
787bef17 DA |
1323 | if (al.map && al.map->dso && al.map->dso->name) |
1324 | dsoname = al.map->dso->name; | |
1325 | else | |
1326 | dsoname = ""; | |
c0230b2b | 1327 | |
610723f2 | 1328 | printf(" (%s)", dsoname); |
787bef17 | 1329 | } |
c0230b2b DA |
1330 | } |
1331 | } | |
5d67be97 AB |
1332 | |
1333 | int perf_session__cpu_bitmap(struct perf_session *session, | |
1334 | const char *cpu_list, unsigned long *cpu_bitmap) | |
1335 | { | |
1336 | int i; | |
1337 | struct cpu_map *map; | |
1338 | ||
1339 | for (i = 0; i < PERF_TYPE_MAX; ++i) { | |
1340 | struct perf_evsel *evsel; | |
1341 | ||
1342 | evsel = perf_session__find_first_evtype(session, i); | |
1343 | if (!evsel) | |
1344 | continue; | |
1345 | ||
1346 | if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) { | |
1347 | pr_err("File does not contain CPU events. " | |
1348 | "Remove -c option to proceed.\n"); | |
1349 | return -1; | |
1350 | } | |
1351 | } | |
1352 | ||
1353 | map = cpu_map__new(cpu_list); | |
1354 | ||
1355 | for (i = 0; i < map->nr; i++) { | |
1356 | int cpu = map->map[i]; | |
1357 | ||
1358 | if (cpu >= MAX_NR_CPUS) { | |
1359 | pr_err("Requested CPU %d too large. " | |
1360 | "Consider raising MAX_NR_CPUS\n", cpu); | |
1361 | return -1; | |
1362 | } | |
1363 | ||
1364 | set_bit(cpu, cpu_bitmap); | |
1365 | } | |
1366 | ||
1367 | return 0; | |
1368 | } | |
fbe96f29 SE |
1369 | |
1370 | void perf_session__fprintf_info(struct perf_session *session, FILE *fp, | |
1371 | bool full) | |
1372 | { | |
1373 | struct stat st; | |
1374 | int ret; | |
1375 | ||
1376 | if (session == NULL || fp == NULL) | |
1377 | return; | |
1378 | ||
1379 | ret = fstat(session->fd, &st); | |
1380 | if (ret == -1) | |
1381 | return; | |
1382 | ||
1383 | fprintf(fp, "# ========\n"); | |
1384 | fprintf(fp, "# captured on: %s", ctime(&st.st_ctime)); | |
1385 | perf_header__fprintf_info(session, fp, full); | |
1386 | fprintf(fp, "# ========\n#\n"); | |
1387 | } |