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Commit | Line | Data |
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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); |
743eb868 | 87 | self->host_machine.id_hdr_size = self->id_hdr_size; |
9c90a61c ACM |
88 | } |
89 | ||
a1645ce1 ZY |
90 | int perf_session__create_kernel_maps(struct perf_session *self) |
91 | { | |
d118f8ba | 92 | int ret = machine__create_kernel_maps(&self->host_machine); |
a1645ce1 | 93 | |
a1645ce1 | 94 | if (ret >= 0) |
d118f8ba | 95 | ret = machines__create_guest_kernel_maps(&self->machines); |
a1645ce1 ZY |
96 | return ret; |
97 | } | |
98 | ||
076c6e45 ACM |
99 | static void perf_session__destroy_kernel_maps(struct perf_session *self) |
100 | { | |
101 | machine__destroy_kernel_maps(&self->host_machine); | |
102 | machines__destroy_guest_kernel_maps(&self->machines); | |
103 | } | |
104 | ||
21ef97f0 IM |
105 | struct perf_session *perf_session__new(const char *filename, int mode, |
106 | bool force, bool repipe, | |
107 | struct perf_event_ops *ops) | |
94c744b6 | 108 | { |
b3165f41 | 109 | size_t len = filename ? strlen(filename) + 1 : 0; |
94c744b6 ACM |
110 | struct perf_session *self = zalloc(sizeof(*self) + len); |
111 | ||
112 | if (self == NULL) | |
113 | goto out; | |
114 | ||
94c744b6 | 115 | memcpy(self->filename, filename, len); |
55b44629 TG |
116 | /* |
117 | * On 64bit we can mmap the data file in one go. No need for tiny mmap | |
118 | * slices. On 32bit we use 32MB. | |
119 | */ | |
120 | #if BITS_PER_LONG == 64 | |
121 | self->mmap_window = ULLONG_MAX; | |
122 | #else | |
123 | self->mmap_window = 32 * 1024 * 1024ULL; | |
124 | #endif | |
23346f21 | 125 | self->machines = RB_ROOT; |
454c407e | 126 | self->repipe = repipe; |
a1225dec | 127 | INIT_LIST_HEAD(&self->ordered_samples.samples); |
020bb75a | 128 | INIT_LIST_HEAD(&self->ordered_samples.sample_cache); |
5c891f38 | 129 | INIT_LIST_HEAD(&self->ordered_samples.to_free); |
1f626bc3 | 130 | machine__init(&self->host_machine, "", HOST_KERNEL_ID); |
94c744b6 | 131 | |
64abebf7 ACM |
132 | if (mode == O_RDONLY) { |
133 | if (perf_session__open(self, force) < 0) | |
134 | goto out_delete; | |
a91e5431 | 135 | perf_session__update_sample_type(self); |
64abebf7 ACM |
136 | } else if (mode == O_WRONLY) { |
137 | /* | |
138 | * In O_RDONLY mode this will be performed when reading the | |
8115d60c | 139 | * kernel MMAP event, in perf_event__process_mmap(). |
64abebf7 ACM |
140 | */ |
141 | if (perf_session__create_kernel_maps(self) < 0) | |
142 | goto out_delete; | |
143 | } | |
d549c769 | 144 | |
21ef97f0 IM |
145 | if (ops && ops->ordering_requires_timestamps && |
146 | ops->ordered_samples && !self->sample_id_all) { | |
147 | dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n"); | |
148 | ops->ordered_samples = false; | |
149 | } | |
150 | ||
94c744b6 ACM |
151 | out: |
152 | return self; | |
4aa65636 ACM |
153 | out_delete: |
154 | perf_session__delete(self); | |
155 | return NULL; | |
94c744b6 ACM |
156 | } |
157 | ||
b424eba2 | 158 | static void machine__delete_dead_threads(struct machine *machine) |
d65a458b ACM |
159 | { |
160 | struct thread *n, *t; | |
161 | ||
b424eba2 | 162 | list_for_each_entry_safe(t, n, &machine->dead_threads, node) { |
d65a458b ACM |
163 | list_del(&t->node); |
164 | thread__delete(t); | |
165 | } | |
166 | } | |
167 | ||
b424eba2 ACM |
168 | static void perf_session__delete_dead_threads(struct perf_session *session) |
169 | { | |
170 | machine__delete_dead_threads(&session->host_machine); | |
171 | } | |
172 | ||
173 | static void machine__delete_threads(struct machine *self) | |
d65a458b ACM |
174 | { |
175 | struct rb_node *nd = rb_first(&self->threads); | |
176 | ||
177 | while (nd) { | |
178 | struct thread *t = rb_entry(nd, struct thread, rb_node); | |
179 | ||
180 | rb_erase(&t->rb_node, &self->threads); | |
181 | nd = rb_next(nd); | |
182 | thread__delete(t); | |
183 | } | |
184 | } | |
185 | ||
b424eba2 ACM |
186 | static void perf_session__delete_threads(struct perf_session *session) |
187 | { | |
188 | machine__delete_threads(&session->host_machine); | |
189 | } | |
190 | ||
94c744b6 ACM |
191 | void perf_session__delete(struct perf_session *self) |
192 | { | |
076c6e45 | 193 | perf_session__destroy_kernel_maps(self); |
d65a458b ACM |
194 | perf_session__delete_dead_threads(self); |
195 | perf_session__delete_threads(self); | |
196 | machine__exit(&self->host_machine); | |
94c744b6 ACM |
197 | close(self->fd); |
198 | free(self); | |
199 | } | |
a328626b | 200 | |
b424eba2 | 201 | void machine__remove_thread(struct machine *self, struct thread *th) |
720a3aeb | 202 | { |
70597f21 | 203 | self->last_match = NULL; |
720a3aeb ACM |
204 | rb_erase(&th->rb_node, &self->threads); |
205 | /* | |
206 | * We may have references to this thread, for instance in some hist_entry | |
207 | * instances, so just move them to a separate list. | |
208 | */ | |
209 | list_add_tail(&th->node, &self->dead_threads); | |
210 | } | |
211 | ||
a328626b ACM |
212 | static bool symbol__match_parent_regex(struct symbol *sym) |
213 | { | |
214 | if (sym->name && !regexec(&parent_regex, sym->name, 0, NULL, 0)) | |
215 | return 1; | |
216 | ||
217 | return 0; | |
218 | } | |
219 | ||
743eb868 ACM |
220 | int machine__resolve_callchain(struct machine *self, struct perf_evsel *evsel, |
221 | struct thread *thread, | |
222 | struct ip_callchain *chain, | |
223 | struct symbol **parent) | |
a328626b ACM |
224 | { |
225 | u8 cpumode = PERF_RECORD_MISC_USER; | |
a328626b | 226 | unsigned int i; |
1b3a0e95 | 227 | int err; |
a328626b | 228 | |
246d4ce8 | 229 | callchain_cursor_reset(&evsel->hists.callchain_cursor); |
a328626b ACM |
230 | |
231 | for (i = 0; i < chain->nr; i++) { | |
d797fdc5 | 232 | u64 ip; |
a328626b ACM |
233 | struct addr_location al; |
234 | ||
d797fdc5 SL |
235 | if (callchain_param.order == ORDER_CALLEE) |
236 | ip = chain->ips[i]; | |
237 | else | |
238 | ip = chain->ips[chain->nr - i - 1]; | |
239 | ||
a328626b ACM |
240 | if (ip >= PERF_CONTEXT_MAX) { |
241 | switch (ip) { | |
242 | case PERF_CONTEXT_HV: | |
243 | cpumode = PERF_RECORD_MISC_HYPERVISOR; break; | |
244 | case PERF_CONTEXT_KERNEL: | |
245 | cpumode = PERF_RECORD_MISC_KERNEL; break; | |
246 | case PERF_CONTEXT_USER: | |
247 | cpumode = PERF_RECORD_MISC_USER; break; | |
248 | default: | |
249 | break; | |
250 | } | |
251 | continue; | |
252 | } | |
253 | ||
a1645ce1 | 254 | al.filtered = false; |
a328626b | 255 | thread__find_addr_location(thread, self, cpumode, |
743eb868 | 256 | MAP__FUNCTION, ip, &al, NULL); |
a328626b ACM |
257 | if (al.sym != NULL) { |
258 | if (sort__has_parent && !*parent && | |
259 | symbol__match_parent_regex(al.sym)) | |
260 | *parent = al.sym; | |
d599db3f | 261 | if (!symbol_conf.use_callchain) |
a328626b | 262 | break; |
a328626b | 263 | } |
1b3a0e95 | 264 | |
246d4ce8 | 265 | err = callchain_cursor_append(&evsel->hists.callchain_cursor, |
1b3a0e95 FW |
266 | ip, al.map, al.sym); |
267 | if (err) | |
268 | return err; | |
a328626b ACM |
269 | } |
270 | ||
1b3a0e95 | 271 | return 0; |
a328626b | 272 | } |
06aae590 | 273 | |
d20deb64 ACM |
274 | static int process_event_synth_tracing_data_stub(union perf_event *event __used, |
275 | struct perf_session *session __used) | |
276 | { | |
277 | dump_printf(": unhandled!\n"); | |
278 | return 0; | |
279 | } | |
280 | ||
10d0f086 ACM |
281 | static int process_event_synth_attr_stub(union perf_event *event __used, |
282 | struct perf_evlist **pevlist __used) | |
283 | { | |
284 | dump_printf(": unhandled!\n"); | |
285 | return 0; | |
286 | } | |
287 | ||
d20deb64 ACM |
288 | static int process_event_sample_stub(struct perf_event_ops *ops __used, |
289 | union perf_event *event __used, | |
9e69c210 ACM |
290 | struct perf_sample *sample __used, |
291 | struct perf_evsel *evsel __used, | |
743eb868 | 292 | struct machine *machine __used) |
9e69c210 ACM |
293 | { |
294 | dump_printf(": unhandled!\n"); | |
295 | return 0; | |
296 | } | |
297 | ||
d20deb64 ACM |
298 | static int process_event_stub(struct perf_event_ops *ops __used, |
299 | union perf_event *event __used, | |
8d50e5b4 | 300 | struct perf_sample *sample __used, |
743eb868 | 301 | struct machine *machine __used) |
06aae590 ACM |
302 | { |
303 | dump_printf(": unhandled!\n"); | |
304 | return 0; | |
305 | } | |
306 | ||
d20deb64 ACM |
307 | static int process_finished_round_stub(struct perf_event_ops *ops __used, |
308 | union perf_event *event __used, | |
743eb868 ACM |
309 | struct perf_session *perf_session __used) |
310 | { | |
311 | dump_printf(": unhandled!\n"); | |
312 | return 0; | |
313 | } | |
314 | ||
315 | static int process_event_type_stub(struct perf_event_ops *ops __used, | |
316 | union perf_event *event __used) | |
d6b17beb FW |
317 | { |
318 | dump_printf(": unhandled!\n"); | |
319 | return 0; | |
320 | } | |
321 | ||
d20deb64 ACM |
322 | static int process_finished_round(struct perf_event_ops *ops, |
323 | union perf_event *event, | |
324 | struct perf_session *session); | |
d6b17beb | 325 | |
06aae590 ACM |
326 | static void perf_event_ops__fill_defaults(struct perf_event_ops *handler) |
327 | { | |
55aa640f | 328 | if (handler->sample == NULL) |
9e69c210 | 329 | handler->sample = process_event_sample_stub; |
55aa640f ACM |
330 | if (handler->mmap == NULL) |
331 | handler->mmap = process_event_stub; | |
332 | if (handler->comm == NULL) | |
333 | handler->comm = process_event_stub; | |
334 | if (handler->fork == NULL) | |
335 | handler->fork = process_event_stub; | |
336 | if (handler->exit == NULL) | |
337 | handler->exit = process_event_stub; | |
338 | if (handler->lost == NULL) | |
8115d60c | 339 | handler->lost = perf_event__process_lost; |
55aa640f | 340 | if (handler->read == NULL) |
743eb868 | 341 | handler->read = process_event_sample_stub; |
55aa640f ACM |
342 | if (handler->throttle == NULL) |
343 | handler->throttle = process_event_stub; | |
344 | if (handler->unthrottle == NULL) | |
345 | handler->unthrottle = process_event_stub; | |
2c46dbb5 | 346 | if (handler->attr == NULL) |
10d0f086 | 347 | handler->attr = process_event_synth_attr_stub; |
cd19a035 | 348 | if (handler->event_type == NULL) |
743eb868 | 349 | handler->event_type = process_event_type_stub; |
9215545e | 350 | if (handler->tracing_data == NULL) |
d20deb64 | 351 | handler->tracing_data = process_event_synth_tracing_data_stub; |
c7929e47 | 352 | if (handler->build_id == NULL) |
743eb868 | 353 | handler->build_id = process_finished_round_stub; |
d6b17beb FW |
354 | if (handler->finished_round == NULL) { |
355 | if (handler->ordered_samples) | |
356 | handler->finished_round = process_finished_round; | |
357 | else | |
358 | handler->finished_round = process_finished_round_stub; | |
359 | } | |
06aae590 ACM |
360 | } |
361 | ||
ba21594c ACM |
362 | void mem_bswap_64(void *src, int byte_size) |
363 | { | |
364 | u64 *m = src; | |
365 | ||
366 | while (byte_size > 0) { | |
367 | *m = bswap_64(*m); | |
368 | byte_size -= sizeof(u64); | |
369 | ++m; | |
370 | } | |
371 | } | |
372 | ||
8115d60c | 373 | static void perf_event__all64_swap(union perf_event *event) |
ba21594c | 374 | { |
8115d60c ACM |
375 | struct perf_event_header *hdr = &event->header; |
376 | mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr)); | |
ba21594c ACM |
377 | } |
378 | ||
8115d60c | 379 | static void perf_event__comm_swap(union perf_event *event) |
ba21594c | 380 | { |
8115d60c ACM |
381 | event->comm.pid = bswap_32(event->comm.pid); |
382 | event->comm.tid = bswap_32(event->comm.tid); | |
ba21594c ACM |
383 | } |
384 | ||
8115d60c | 385 | static void perf_event__mmap_swap(union perf_event *event) |
ba21594c | 386 | { |
8115d60c ACM |
387 | event->mmap.pid = bswap_32(event->mmap.pid); |
388 | event->mmap.tid = bswap_32(event->mmap.tid); | |
389 | event->mmap.start = bswap_64(event->mmap.start); | |
390 | event->mmap.len = bswap_64(event->mmap.len); | |
391 | event->mmap.pgoff = bswap_64(event->mmap.pgoff); | |
ba21594c ACM |
392 | } |
393 | ||
8115d60c | 394 | static void perf_event__task_swap(union perf_event *event) |
ba21594c | 395 | { |
8115d60c ACM |
396 | event->fork.pid = bswap_32(event->fork.pid); |
397 | event->fork.tid = bswap_32(event->fork.tid); | |
398 | event->fork.ppid = bswap_32(event->fork.ppid); | |
399 | event->fork.ptid = bswap_32(event->fork.ptid); | |
400 | event->fork.time = bswap_64(event->fork.time); | |
ba21594c ACM |
401 | } |
402 | ||
8115d60c | 403 | static void perf_event__read_swap(union perf_event *event) |
ba21594c | 404 | { |
8115d60c ACM |
405 | event->read.pid = bswap_32(event->read.pid); |
406 | event->read.tid = bswap_32(event->read.tid); | |
407 | event->read.value = bswap_64(event->read.value); | |
408 | event->read.time_enabled = bswap_64(event->read.time_enabled); | |
409 | event->read.time_running = bswap_64(event->read.time_running); | |
410 | event->read.id = bswap_64(event->read.id); | |
ba21594c ACM |
411 | } |
412 | ||
eda3913b DA |
413 | /* exported for swapping attributes in file header */ |
414 | void perf_event__attr_swap(struct perf_event_attr *attr) | |
415 | { | |
416 | attr->type = bswap_32(attr->type); | |
417 | attr->size = bswap_32(attr->size); | |
418 | attr->config = bswap_64(attr->config); | |
419 | attr->sample_period = bswap_64(attr->sample_period); | |
420 | attr->sample_type = bswap_64(attr->sample_type); | |
421 | attr->read_format = bswap_64(attr->read_format); | |
422 | attr->wakeup_events = bswap_32(attr->wakeup_events); | |
423 | attr->bp_type = bswap_32(attr->bp_type); | |
424 | attr->bp_addr = bswap_64(attr->bp_addr); | |
425 | attr->bp_len = bswap_64(attr->bp_len); | |
426 | } | |
427 | ||
428 | static void perf_event__hdr_attr_swap(union perf_event *event) | |
2c46dbb5 TZ |
429 | { |
430 | size_t size; | |
431 | ||
eda3913b | 432 | perf_event__attr_swap(&event->attr.attr); |
2c46dbb5 | 433 | |
8115d60c ACM |
434 | size = event->header.size; |
435 | size -= (void *)&event->attr.id - (void *)event; | |
436 | mem_bswap_64(event->attr.id, size); | |
2c46dbb5 TZ |
437 | } |
438 | ||
8115d60c | 439 | static void perf_event__event_type_swap(union perf_event *event) |
cd19a035 | 440 | { |
8115d60c ACM |
441 | event->event_type.event_type.event_id = |
442 | bswap_64(event->event_type.event_type.event_id); | |
cd19a035 TZ |
443 | } |
444 | ||
8115d60c | 445 | static void perf_event__tracing_data_swap(union perf_event *event) |
9215545e | 446 | { |
8115d60c | 447 | event->tracing_data.size = bswap_32(event->tracing_data.size); |
9215545e TZ |
448 | } |
449 | ||
8115d60c | 450 | typedef void (*perf_event__swap_op)(union perf_event *event); |
ba21594c | 451 | |
8115d60c ACM |
452 | static perf_event__swap_op perf_event__swap_ops[] = { |
453 | [PERF_RECORD_MMAP] = perf_event__mmap_swap, | |
454 | [PERF_RECORD_COMM] = perf_event__comm_swap, | |
455 | [PERF_RECORD_FORK] = perf_event__task_swap, | |
456 | [PERF_RECORD_EXIT] = perf_event__task_swap, | |
457 | [PERF_RECORD_LOST] = perf_event__all64_swap, | |
458 | [PERF_RECORD_READ] = perf_event__read_swap, | |
459 | [PERF_RECORD_SAMPLE] = perf_event__all64_swap, | |
eda3913b | 460 | [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap, |
8115d60c ACM |
461 | [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap, |
462 | [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap, | |
463 | [PERF_RECORD_HEADER_BUILD_ID] = NULL, | |
464 | [PERF_RECORD_HEADER_MAX] = NULL, | |
ba21594c ACM |
465 | }; |
466 | ||
c61e52ee FW |
467 | struct sample_queue { |
468 | u64 timestamp; | |
e4c2df13 | 469 | u64 file_offset; |
8115d60c | 470 | union perf_event *event; |
c61e52ee FW |
471 | struct list_head list; |
472 | }; | |
473 | ||
020bb75a TG |
474 | static void perf_session_free_sample_buffers(struct perf_session *session) |
475 | { | |
476 | struct ordered_samples *os = &session->ordered_samples; | |
477 | ||
5c891f38 | 478 | while (!list_empty(&os->to_free)) { |
020bb75a TG |
479 | struct sample_queue *sq; |
480 | ||
5c891f38 | 481 | sq = list_entry(os->to_free.next, struct sample_queue, list); |
020bb75a TG |
482 | list_del(&sq->list); |
483 | free(sq); | |
484 | } | |
485 | } | |
486 | ||
cbf41645 | 487 | static int perf_session_deliver_event(struct perf_session *session, |
8115d60c | 488 | union perf_event *event, |
8d50e5b4 | 489 | struct perf_sample *sample, |
f74725dc TG |
490 | struct perf_event_ops *ops, |
491 | u64 file_offset); | |
cbf41645 | 492 | |
c61e52ee FW |
493 | static void flush_sample_queue(struct perf_session *s, |
494 | struct perf_event_ops *ops) | |
495 | { | |
a1225dec TG |
496 | struct ordered_samples *os = &s->ordered_samples; |
497 | struct list_head *head = &os->samples; | |
c61e52ee | 498 | struct sample_queue *tmp, *iter; |
8d50e5b4 | 499 | struct perf_sample sample; |
a1225dec TG |
500 | u64 limit = os->next_flush; |
501 | u64 last_ts = os->last_sample ? os->last_sample->timestamp : 0ULL; | |
88660563 | 502 | unsigned idx = 0, progress_next = os->nr_samples / 16; |
5538beca | 503 | int ret; |
c61e52ee | 504 | |
d6b17beb | 505 | if (!ops->ordered_samples || !limit) |
c61e52ee FW |
506 | return; |
507 | ||
508 | list_for_each_entry_safe(iter, tmp, head, list) { | |
509 | if (iter->timestamp > limit) | |
a1225dec | 510 | break; |
c61e52ee | 511 | |
5538beca FW |
512 | ret = perf_session__parse_sample(s, iter->event, &sample); |
513 | if (ret) | |
514 | pr_err("Can't parse sample, err = %d\n", ret); | |
515 | else | |
516 | perf_session_deliver_event(s, iter->event, &sample, ops, | |
517 | iter->file_offset); | |
c61e52ee | 518 | |
a1225dec | 519 | os->last_flush = iter->timestamp; |
c61e52ee | 520 | list_del(&iter->list); |
020bb75a | 521 | list_add(&iter->list, &os->sample_cache); |
88660563 ACM |
522 | if (++idx >= progress_next) { |
523 | progress_next += os->nr_samples / 16; | |
524 | ui_progress__update(idx, os->nr_samples, | |
525 | "Processing time ordered events..."); | |
526 | } | |
c61e52ee | 527 | } |
a1225dec TG |
528 | |
529 | if (list_empty(head)) { | |
530 | os->last_sample = NULL; | |
531 | } else if (last_ts <= limit) { | |
532 | os->last_sample = | |
533 | list_entry(head->prev, struct sample_queue, list); | |
534 | } | |
88660563 ACM |
535 | |
536 | os->nr_samples = 0; | |
c61e52ee FW |
537 | } |
538 | ||
d6b17beb FW |
539 | /* |
540 | * When perf record finishes a pass on every buffers, it records this pseudo | |
541 | * event. | |
542 | * We record the max timestamp t found in the pass n. | |
543 | * Assuming these timestamps are monotonic across cpus, we know that if | |
544 | * a buffer still has events with timestamps below t, they will be all | |
545 | * available and then read in the pass n + 1. | |
546 | * Hence when we start to read the pass n + 2, we can safely flush every | |
547 | * events with timestamps below t. | |
548 | * | |
549 | * ============ PASS n ================= | |
550 | * CPU 0 | CPU 1 | |
551 | * | | |
552 | * cnt1 timestamps | cnt2 timestamps | |
553 | * 1 | 2 | |
554 | * 2 | 3 | |
555 | * - | 4 <--- max recorded | |
556 | * | |
557 | * ============ PASS n + 1 ============== | |
558 | * CPU 0 | CPU 1 | |
559 | * | | |
560 | * cnt1 timestamps | cnt2 timestamps | |
561 | * 3 | 5 | |
562 | * 4 | 6 | |
563 | * 5 | 7 <---- max recorded | |
564 | * | |
565 | * Flush every events below timestamp 4 | |
566 | * | |
567 | * ============ PASS n + 2 ============== | |
568 | * CPU 0 | CPU 1 | |
569 | * | | |
570 | * cnt1 timestamps | cnt2 timestamps | |
571 | * 6 | 8 | |
572 | * 7 | 9 | |
573 | * - | 10 | |
574 | * | |
575 | * Flush every events below timestamp 7 | |
576 | * etc... | |
577 | */ | |
d20deb64 ACM |
578 | static int process_finished_round(struct perf_event_ops *ops, |
579 | union perf_event *event __used, | |
580 | struct perf_session *session) | |
d6b17beb FW |
581 | { |
582 | flush_sample_queue(session, ops); | |
583 | session->ordered_samples.next_flush = session->ordered_samples.max_timestamp; | |
584 | ||
585 | return 0; | |
586 | } | |
587 | ||
c61e52ee | 588 | /* The queue is ordered by time */ |
cbf41645 | 589 | static void __queue_event(struct sample_queue *new, struct perf_session *s) |
c61e52ee | 590 | { |
a1225dec TG |
591 | struct ordered_samples *os = &s->ordered_samples; |
592 | struct sample_queue *sample = os->last_sample; | |
593 | u64 timestamp = new->timestamp; | |
594 | struct list_head *p; | |
c61e52ee | 595 | |
88660563 | 596 | ++os->nr_samples; |
a1225dec | 597 | os->last_sample = new; |
c61e52ee | 598 | |
a1225dec TG |
599 | if (!sample) { |
600 | list_add(&new->list, &os->samples); | |
601 | os->max_timestamp = timestamp; | |
c61e52ee FW |
602 | return; |
603 | } | |
604 | ||
605 | /* | |
a1225dec TG |
606 | * last_sample might point to some random place in the list as it's |
607 | * the last queued event. We expect that the new event is close to | |
608 | * this. | |
c61e52ee | 609 | */ |
a1225dec TG |
610 | if (sample->timestamp <= timestamp) { |
611 | while (sample->timestamp <= timestamp) { | |
612 | p = sample->list.next; | |
613 | if (p == &os->samples) { | |
614 | list_add_tail(&new->list, &os->samples); | |
615 | os->max_timestamp = timestamp; | |
616 | return; | |
617 | } | |
618 | sample = list_entry(p, struct sample_queue, list); | |
619 | } | |
620 | list_add_tail(&new->list, &sample->list); | |
621 | } else { | |
622 | while (sample->timestamp > timestamp) { | |
623 | p = sample->list.prev; | |
624 | if (p == &os->samples) { | |
625 | list_add(&new->list, &os->samples); | |
626 | return; | |
627 | } | |
628 | sample = list_entry(p, struct sample_queue, list); | |
629 | } | |
630 | list_add(&new->list, &sample->list); | |
631 | } | |
c61e52ee FW |
632 | } |
633 | ||
5c891f38 TG |
634 | #define MAX_SAMPLE_BUFFER (64 * 1024 / sizeof(struct sample_queue)) |
635 | ||
8115d60c | 636 | static int perf_session_queue_event(struct perf_session *s, union perf_event *event, |
8d50e5b4 | 637 | struct perf_sample *sample, u64 file_offset) |
c61e52ee | 638 | { |
5c891f38 TG |
639 | struct ordered_samples *os = &s->ordered_samples; |
640 | struct list_head *sc = &os->sample_cache; | |
8d50e5b4 | 641 | u64 timestamp = sample->time; |
c61e52ee | 642 | struct sample_queue *new; |
c61e52ee | 643 | |
79a14c1f | 644 | if (!timestamp || timestamp == ~0ULL) |
cbf41645 TG |
645 | return -ETIME; |
646 | ||
c61e52ee FW |
647 | if (timestamp < s->ordered_samples.last_flush) { |
648 | printf("Warning: Timestamp below last timeslice flush\n"); | |
649 | return -EINVAL; | |
650 | } | |
651 | ||
020bb75a TG |
652 | if (!list_empty(sc)) { |
653 | new = list_entry(sc->next, struct sample_queue, list); | |
654 | list_del(&new->list); | |
5c891f38 TG |
655 | } else if (os->sample_buffer) { |
656 | new = os->sample_buffer + os->sample_buffer_idx; | |
657 | if (++os->sample_buffer_idx == MAX_SAMPLE_BUFFER) | |
658 | os->sample_buffer = NULL; | |
020bb75a | 659 | } else { |
5c891f38 TG |
660 | os->sample_buffer = malloc(MAX_SAMPLE_BUFFER * sizeof(*new)); |
661 | if (!os->sample_buffer) | |
020bb75a | 662 | return -ENOMEM; |
5c891f38 TG |
663 | list_add(&os->sample_buffer->list, &os->to_free); |
664 | os->sample_buffer_idx = 2; | |
665 | new = os->sample_buffer + 1; | |
020bb75a | 666 | } |
c61e52ee FW |
667 | |
668 | new->timestamp = timestamp; | |
e4c2df13 | 669 | new->file_offset = file_offset; |
fe174207 | 670 | new->event = event; |
c61e52ee | 671 | |
cbf41645 | 672 | __queue_event(new, s); |
640c03ce | 673 | |
640c03ce ACM |
674 | return 0; |
675 | } | |
c61e52ee | 676 | |
8d50e5b4 | 677 | static void callchain__printf(struct perf_sample *sample) |
640c03ce ACM |
678 | { |
679 | unsigned int i; | |
c61e52ee | 680 | |
9486aa38 | 681 | printf("... chain: nr:%" PRIu64 "\n", sample->callchain->nr); |
640c03ce ACM |
682 | |
683 | for (i = 0; i < sample->callchain->nr; i++) | |
9486aa38 ACM |
684 | printf("..... %2d: %016" PRIx64 "\n", |
685 | i, sample->callchain->ips[i]); | |
c61e52ee FW |
686 | } |
687 | ||
9c90a61c | 688 | static void perf_session__print_tstamp(struct perf_session *session, |
8115d60c | 689 | union perf_event *event, |
8d50e5b4 | 690 | struct perf_sample *sample) |
9c90a61c ACM |
691 | { |
692 | if (event->header.type != PERF_RECORD_SAMPLE && | |
693 | !session->sample_id_all) { | |
694 | fputs("-1 -1 ", stdout); | |
695 | return; | |
696 | } | |
697 | ||
698 | if ((session->sample_type & PERF_SAMPLE_CPU)) | |
699 | printf("%u ", sample->cpu); | |
700 | ||
701 | if (session->sample_type & PERF_SAMPLE_TIME) | |
9486aa38 | 702 | printf("%" PRIu64 " ", sample->time); |
9c90a61c ACM |
703 | } |
704 | ||
8115d60c | 705 | static void dump_event(struct perf_session *session, union perf_event *event, |
8d50e5b4 | 706 | u64 file_offset, struct perf_sample *sample) |
9aefcab0 TG |
707 | { |
708 | if (!dump_trace) | |
709 | return; | |
710 | ||
9486aa38 ACM |
711 | printf("\n%#" PRIx64 " [%#x]: event: %d\n", |
712 | file_offset, event->header.size, event->header.type); | |
9aefcab0 TG |
713 | |
714 | trace_event(event); | |
715 | ||
716 | if (sample) | |
717 | perf_session__print_tstamp(session, event, sample); | |
718 | ||
9486aa38 | 719 | printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset, |
8115d60c | 720 | event->header.size, perf_event__name(event->header.type)); |
9aefcab0 TG |
721 | } |
722 | ||
8115d60c | 723 | static void dump_sample(struct perf_session *session, union perf_event *event, |
8d50e5b4 | 724 | struct perf_sample *sample) |
9aefcab0 | 725 | { |
ddbc24b7 ACM |
726 | if (!dump_trace) |
727 | return; | |
728 | ||
7cec0922 | 729 | printf("(IP, %d): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n", |
9486aa38 | 730 | event->header.misc, sample->pid, sample->tid, sample->ip, |
7cec0922 | 731 | sample->period, sample->addr); |
9aefcab0 TG |
732 | |
733 | if (session->sample_type & PERF_SAMPLE_CALLCHAIN) | |
ddbc24b7 | 734 | callchain__printf(sample); |
9aefcab0 TG |
735 | } |
736 | ||
743eb868 ACM |
737 | static struct machine * |
738 | perf_session__find_machine_for_cpumode(struct perf_session *session, | |
739 | union perf_event *event) | |
740 | { | |
741 | const u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
742 | ||
743 | if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) | |
744 | return perf_session__find_machine(session, event->ip.pid); | |
745 | ||
746 | return perf_session__find_host_machine(session); | |
747 | } | |
748 | ||
cbf41645 | 749 | static int perf_session_deliver_event(struct perf_session *session, |
8115d60c | 750 | union perf_event *event, |
8d50e5b4 | 751 | struct perf_sample *sample, |
f74725dc | 752 | struct perf_event_ops *ops, |
532e7269 | 753 | u64 file_offset) |
cbf41645 | 754 | { |
9e69c210 | 755 | struct perf_evsel *evsel; |
743eb868 | 756 | struct machine *machine; |
9e69c210 | 757 | |
532e7269 TG |
758 | dump_event(session, event, file_offset, sample); |
759 | ||
7b27509f ACM |
760 | evsel = perf_evlist__id2evsel(session->evlist, sample->id); |
761 | if (evsel != NULL && event->header.type != PERF_RECORD_SAMPLE) { | |
762 | /* | |
763 | * XXX We're leaving PERF_RECORD_SAMPLE unnacounted here | |
764 | * because the tools right now may apply filters, discarding | |
765 | * some of the samples. For consistency, in the future we | |
766 | * should have something like nr_filtered_samples and remove | |
767 | * the sample->period from total_sample_period, etc, KISS for | |
768 | * now tho. | |
769 | * | |
770 | * Also testing against NULL allows us to handle files without | |
771 | * attr.sample_id_all and/or without PERF_SAMPLE_ID. In the | |
772 | * future probably it'll be a good idea to restrict event | |
773 | * processing via perf_session to files with both set. | |
774 | */ | |
775 | hists__inc_nr_events(&evsel->hists, event->header.type); | |
776 | } | |
777 | ||
743eb868 ACM |
778 | machine = perf_session__find_machine_for_cpumode(session, event); |
779 | ||
cbf41645 TG |
780 | switch (event->header.type) { |
781 | case PERF_RECORD_SAMPLE: | |
532e7269 | 782 | dump_sample(session, event, sample); |
9e69c210 ACM |
783 | if (evsel == NULL) { |
784 | ++session->hists.stats.nr_unknown_id; | |
785 | return -1; | |
786 | } | |
743eb868 | 787 | return ops->sample(ops, event, sample, evsel, machine); |
cbf41645 | 788 | case PERF_RECORD_MMAP: |
743eb868 | 789 | return ops->mmap(ops, event, sample, machine); |
cbf41645 | 790 | case PERF_RECORD_COMM: |
743eb868 | 791 | return ops->comm(ops, event, sample, machine); |
cbf41645 | 792 | case PERF_RECORD_FORK: |
743eb868 | 793 | return ops->fork(ops, event, sample, machine); |
cbf41645 | 794 | case PERF_RECORD_EXIT: |
743eb868 | 795 | return ops->exit(ops, event, sample, machine); |
cbf41645 | 796 | case PERF_RECORD_LOST: |
743eb868 ACM |
797 | if (ops->lost == perf_event__process_lost) |
798 | session->hists.stats.total_lost += event->lost.lost; | |
799 | return ops->lost(ops, event, sample, machine); | |
cbf41645 | 800 | case PERF_RECORD_READ: |
743eb868 | 801 | return ops->read(ops, event, sample, evsel, machine); |
cbf41645 | 802 | case PERF_RECORD_THROTTLE: |
743eb868 | 803 | return ops->throttle(ops, event, sample, machine); |
cbf41645 | 804 | case PERF_RECORD_UNTHROTTLE: |
743eb868 | 805 | return ops->unthrottle(ops, event, sample, machine); |
cbf41645 TG |
806 | default: |
807 | ++session->hists.stats.nr_unknown_events; | |
808 | return -1; | |
809 | } | |
810 | } | |
811 | ||
3dfc2c0a | 812 | static int perf_session__preprocess_sample(struct perf_session *session, |
8115d60c | 813 | union perf_event *event, struct perf_sample *sample) |
3dfc2c0a TG |
814 | { |
815 | if (event->header.type != PERF_RECORD_SAMPLE || | |
816 | !(session->sample_type & PERF_SAMPLE_CALLCHAIN)) | |
817 | return 0; | |
818 | ||
819 | if (!ip_callchain__valid(sample->callchain, event)) { | |
820 | pr_debug("call-chain problem with event, skipping it.\n"); | |
821 | ++session->hists.stats.nr_invalid_chains; | |
822 | session->hists.stats.total_invalid_chains += sample->period; | |
823 | return -EINVAL; | |
824 | } | |
825 | return 0; | |
826 | } | |
827 | ||
8115d60c | 828 | static int perf_session__process_user_event(struct perf_session *session, union perf_event *event, |
ba74f064 | 829 | struct perf_event_ops *ops, u64 file_offset) |
06aae590 | 830 | { |
10d0f086 ACM |
831 | int err; |
832 | ||
ba74f064 | 833 | dump_event(session, event, file_offset, NULL); |
06aae590 | 834 | |
cbf41645 | 835 | /* These events are processed right away */ |
06aae590 | 836 | switch (event->header.type) { |
2c46dbb5 | 837 | case PERF_RECORD_HEADER_ATTR: |
10d0f086 ACM |
838 | err = ops->attr(event, &session->evlist); |
839 | if (err == 0) | |
840 | perf_session__update_sample_type(session); | |
841 | return err; | |
cd19a035 | 842 | case PERF_RECORD_HEADER_EVENT_TYPE: |
743eb868 | 843 | return ops->event_type(ops, event); |
9215545e TZ |
844 | case PERF_RECORD_HEADER_TRACING_DATA: |
845 | /* setup for reading amidst mmap */ | |
cbf41645 TG |
846 | lseek(session->fd, file_offset, SEEK_SET); |
847 | return ops->tracing_data(event, session); | |
c7929e47 | 848 | case PERF_RECORD_HEADER_BUILD_ID: |
d20deb64 | 849 | return ops->build_id(ops, event, session); |
d6b17beb | 850 | case PERF_RECORD_FINISHED_ROUND: |
d20deb64 | 851 | return ops->finished_round(ops, event, session); |
06aae590 | 852 | default: |
ba74f064 | 853 | return -EINVAL; |
06aae590 | 854 | } |
ba74f064 TG |
855 | } |
856 | ||
857 | static int perf_session__process_event(struct perf_session *session, | |
8115d60c | 858 | union perf_event *event, |
ba74f064 TG |
859 | struct perf_event_ops *ops, |
860 | u64 file_offset) | |
861 | { | |
8d50e5b4 | 862 | struct perf_sample sample; |
ba74f064 TG |
863 | int ret; |
864 | ||
8115d60c ACM |
865 | if (session->header.needs_swap && |
866 | perf_event__swap_ops[event->header.type]) | |
867 | perf_event__swap_ops[event->header.type](event); | |
ba74f064 TG |
868 | |
869 | if (event->header.type >= PERF_RECORD_HEADER_MAX) | |
870 | return -EINVAL; | |
871 | ||
872 | hists__inc_nr_events(&session->hists, event->header.type); | |
873 | ||
874 | if (event->header.type >= PERF_RECORD_USER_TYPE_START) | |
875 | return perf_session__process_user_event(session, event, ops, file_offset); | |
cbf41645 | 876 | |
3dfc2c0a TG |
877 | /* |
878 | * For all kernel events we get the sample data | |
879 | */ | |
5538beca FW |
880 | ret = perf_session__parse_sample(session, event, &sample); |
881 | if (ret) | |
882 | return ret; | |
3dfc2c0a TG |
883 | |
884 | /* Preprocess sample records - precheck callchains */ | |
885 | if (perf_session__preprocess_sample(session, event, &sample)) | |
886 | return 0; | |
887 | ||
cbf41645 | 888 | if (ops->ordered_samples) { |
e4c2df13 TG |
889 | ret = perf_session_queue_event(session, event, &sample, |
890 | file_offset); | |
cbf41645 TG |
891 | if (ret != -ETIME) |
892 | return ret; | |
893 | } | |
894 | ||
f74725dc TG |
895 | return perf_session_deliver_event(session, event, &sample, ops, |
896 | file_offset); | |
06aae590 ACM |
897 | } |
898 | ||
ba21594c ACM |
899 | void perf_event_header__bswap(struct perf_event_header *self) |
900 | { | |
901 | self->type = bswap_32(self->type); | |
902 | self->misc = bswap_16(self->misc); | |
903 | self->size = bswap_16(self->size); | |
904 | } | |
905 | ||
b424eba2 ACM |
906 | struct thread *perf_session__findnew(struct perf_session *session, pid_t pid) |
907 | { | |
908 | return machine__findnew_thread(&session->host_machine, pid); | |
909 | } | |
910 | ||
06aae590 ACM |
911 | static struct thread *perf_session__register_idle_thread(struct perf_session *self) |
912 | { | |
913 | struct thread *thread = perf_session__findnew(self, 0); | |
914 | ||
915 | if (thread == NULL || thread__set_comm(thread, "swapper")) { | |
916 | pr_err("problem inserting idle task.\n"); | |
917 | thread = NULL; | |
918 | } | |
919 | ||
920 | return thread; | |
921 | } | |
922 | ||
11095994 ACM |
923 | static void perf_session__warn_about_errors(const struct perf_session *session, |
924 | const struct perf_event_ops *ops) | |
925 | { | |
8115d60c | 926 | if (ops->lost == perf_event__process_lost && |
7b27509f ACM |
927 | session->hists.stats.nr_events[PERF_RECORD_LOST] != 0) { |
928 | ui__warning("Processed %d events and lost %d chunks!\n\n" | |
929 | "Check IO/CPU overload!\n\n", | |
930 | session->hists.stats.nr_events[0], | |
931 | session->hists.stats.nr_events[PERF_RECORD_LOST]); | |
11095994 ACM |
932 | } |
933 | ||
934 | if (session->hists.stats.nr_unknown_events != 0) { | |
935 | ui__warning("Found %u unknown events!\n\n" | |
936 | "Is this an older tool processing a perf.data " | |
937 | "file generated by a more recent tool?\n\n" | |
938 | "If that is not the case, consider " | |
939 | "reporting to linux-kernel@vger.kernel.org.\n\n", | |
940 | session->hists.stats.nr_unknown_events); | |
941 | } | |
942 | ||
9e69c210 ACM |
943 | if (session->hists.stats.nr_unknown_id != 0) { |
944 | ui__warning("%u samples with id not present in the header\n", | |
945 | session->hists.stats.nr_unknown_id); | |
946 | } | |
947 | ||
11095994 ACM |
948 | if (session->hists.stats.nr_invalid_chains != 0) { |
949 | ui__warning("Found invalid callchains!\n\n" | |
950 | "%u out of %u events were discarded for this reason.\n\n" | |
951 | "Consider reporting to linux-kernel@vger.kernel.org.\n\n", | |
952 | session->hists.stats.nr_invalid_chains, | |
953 | session->hists.stats.nr_events[PERF_RECORD_SAMPLE]); | |
954 | } | |
955 | } | |
956 | ||
8dc58101 TZ |
957 | #define session_done() (*(volatile int *)(&session_done)) |
958 | volatile int session_done; | |
959 | ||
960 | static int __perf_session__process_pipe_events(struct perf_session *self, | |
961 | struct perf_event_ops *ops) | |
962 | { | |
8115d60c | 963 | union perf_event event; |
8dc58101 TZ |
964 | uint32_t size; |
965 | int skip = 0; | |
966 | u64 head; | |
967 | int err; | |
968 | void *p; | |
969 | ||
970 | perf_event_ops__fill_defaults(ops); | |
971 | ||
972 | head = 0; | |
973 | more: | |
1e7972cc | 974 | err = readn(self->fd, &event, sizeof(struct perf_event_header)); |
8dc58101 TZ |
975 | if (err <= 0) { |
976 | if (err == 0) | |
977 | goto done; | |
978 | ||
979 | pr_err("failed to read event header\n"); | |
980 | goto out_err; | |
981 | } | |
982 | ||
983 | if (self->header.needs_swap) | |
984 | perf_event_header__bswap(&event.header); | |
985 | ||
986 | size = event.header.size; | |
987 | if (size == 0) | |
988 | size = 8; | |
989 | ||
990 | p = &event; | |
991 | p += sizeof(struct perf_event_header); | |
992 | ||
794e43b5 | 993 | if (size - sizeof(struct perf_event_header)) { |
1e7972cc | 994 | err = readn(self->fd, p, size - sizeof(struct perf_event_header)); |
794e43b5 TZ |
995 | if (err <= 0) { |
996 | if (err == 0) { | |
997 | pr_err("unexpected end of event stream\n"); | |
998 | goto done; | |
999 | } | |
8dc58101 | 1000 | |
794e43b5 TZ |
1001 | pr_err("failed to read event data\n"); |
1002 | goto out_err; | |
1003 | } | |
8dc58101 TZ |
1004 | } |
1005 | ||
1006 | if (size == 0 || | |
0331ee0c | 1007 | (skip = perf_session__process_event(self, &event, ops, head)) < 0) { |
9486aa38 | 1008 | dump_printf("%#" PRIx64 " [%#x]: skipping unknown header type: %d\n", |
8dc58101 TZ |
1009 | head, event.header.size, event.header.type); |
1010 | /* | |
1011 | * assume we lost track of the stream, check alignment, and | |
1012 | * increment a single u64 in the hope to catch on again 'soon'. | |
1013 | */ | |
1014 | if (unlikely(head & 7)) | |
1015 | head &= ~7ULL; | |
1016 | ||
1017 | size = 8; | |
1018 | } | |
1019 | ||
1020 | head += size; | |
1021 | ||
8dc58101 TZ |
1022 | if (skip > 0) |
1023 | head += skip; | |
1024 | ||
1025 | if (!session_done()) | |
1026 | goto more; | |
1027 | done: | |
1028 | err = 0; | |
1029 | out_err: | |
11095994 | 1030 | perf_session__warn_about_errors(self, ops); |
020bb75a | 1031 | perf_session_free_sample_buffers(self); |
8dc58101 TZ |
1032 | return err; |
1033 | } | |
1034 | ||
998bedc8 FW |
1035 | static union perf_event * |
1036 | fetch_mmaped_event(struct perf_session *session, | |
1037 | u64 head, size_t mmap_size, char *buf) | |
1038 | { | |
1039 | union perf_event *event; | |
1040 | ||
1041 | /* | |
1042 | * Ensure we have enough space remaining to read | |
1043 | * the size of the event in the headers. | |
1044 | */ | |
1045 | if (head + sizeof(event->header) > mmap_size) | |
1046 | return NULL; | |
1047 | ||
1048 | event = (union perf_event *)(buf + head); | |
1049 | ||
1050 | if (session->header.needs_swap) | |
1051 | perf_event_header__bswap(&event->header); | |
1052 | ||
1053 | if (head + event->header.size > mmap_size) | |
1054 | return NULL; | |
1055 | ||
1056 | return event; | |
1057 | } | |
1058 | ||
0331ee0c | 1059 | int __perf_session__process_events(struct perf_session *session, |
6122e4e4 ACM |
1060 | u64 data_offset, u64 data_size, |
1061 | u64 file_size, struct perf_event_ops *ops) | |
06aae590 | 1062 | { |
55b44629 | 1063 | u64 head, page_offset, file_offset, file_pos, progress_next; |
fe174207 | 1064 | int err, mmap_prot, mmap_flags, map_idx = 0; |
55b44629 | 1065 | size_t page_size, mmap_size; |
fe174207 | 1066 | char *buf, *mmaps[8]; |
8115d60c | 1067 | union perf_event *event; |
06aae590 | 1068 | uint32_t size; |
0331ee0c | 1069 | |
06aae590 ACM |
1070 | perf_event_ops__fill_defaults(ops); |
1071 | ||
1b75962e | 1072 | page_size = sysconf(_SC_PAGESIZE); |
06aae590 | 1073 | |
0331ee0c TG |
1074 | page_offset = page_size * (data_offset / page_size); |
1075 | file_offset = page_offset; | |
1076 | head = data_offset - page_offset; | |
06aae590 | 1077 | |
d6513281 TG |
1078 | if (data_offset + data_size < file_size) |
1079 | file_size = data_offset + data_size; | |
1080 | ||
55b44629 | 1081 | progress_next = file_size / 16; |
55b44629 TG |
1082 | |
1083 | mmap_size = session->mmap_window; | |
1084 | if (mmap_size > file_size) | |
1085 | mmap_size = file_size; | |
1086 | ||
fe174207 TG |
1087 | memset(mmaps, 0, sizeof(mmaps)); |
1088 | ||
ba21594c ACM |
1089 | mmap_prot = PROT_READ; |
1090 | mmap_flags = MAP_SHARED; | |
1091 | ||
0331ee0c | 1092 | if (session->header.needs_swap) { |
ba21594c ACM |
1093 | mmap_prot |= PROT_WRITE; |
1094 | mmap_flags = MAP_PRIVATE; | |
1095 | } | |
06aae590 | 1096 | remap: |
55b44629 TG |
1097 | buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, session->fd, |
1098 | file_offset); | |
06aae590 ACM |
1099 | if (buf == MAP_FAILED) { |
1100 | pr_err("failed to mmap file\n"); | |
1101 | err = -errno; | |
1102 | goto out_err; | |
1103 | } | |
fe174207 TG |
1104 | mmaps[map_idx] = buf; |
1105 | map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1); | |
d6513281 | 1106 | file_pos = file_offset + head; |
06aae590 ACM |
1107 | |
1108 | more: | |
998bedc8 FW |
1109 | event = fetch_mmaped_event(session, head, mmap_size, buf); |
1110 | if (!event) { | |
fe174207 TG |
1111 | if (mmaps[map_idx]) { |
1112 | munmap(mmaps[map_idx], mmap_size); | |
1113 | mmaps[map_idx] = NULL; | |
1114 | } | |
06aae590 | 1115 | |
0331ee0c TG |
1116 | page_offset = page_size * (head / page_size); |
1117 | file_offset += page_offset; | |
1118 | head -= page_offset; | |
06aae590 ACM |
1119 | goto remap; |
1120 | } | |
1121 | ||
1122 | size = event->header.size; | |
1123 | ||
d6513281 TG |
1124 | if (size == 0 || |
1125 | perf_session__process_event(session, event, ops, file_pos) < 0) { | |
9486aa38 | 1126 | dump_printf("%#" PRIx64 " [%#x]: skipping unknown header type: %d\n", |
0331ee0c | 1127 | file_offset + head, event->header.size, |
06aae590 ACM |
1128 | event->header.type); |
1129 | /* | |
1130 | * assume we lost track of the stream, check alignment, and | |
1131 | * increment a single u64 in the hope to catch on again 'soon'. | |
1132 | */ | |
1133 | if (unlikely(head & 7)) | |
1134 | head &= ~7ULL; | |
1135 | ||
1136 | size = 8; | |
1137 | } | |
1138 | ||
1139 | head += size; | |
d6513281 | 1140 | file_pos += size; |
06aae590 | 1141 | |
55b44629 TG |
1142 | if (file_pos >= progress_next) { |
1143 | progress_next += file_size / 16; | |
ca59bcbc ACM |
1144 | ui_progress__update(file_pos, file_size, |
1145 | "Processing events..."); | |
55b44629 TG |
1146 | } |
1147 | ||
d6513281 | 1148 | if (file_pos < file_size) |
06aae590 | 1149 | goto more; |
d6513281 | 1150 | |
06aae590 | 1151 | err = 0; |
c61e52ee | 1152 | /* do the final flush for ordered samples */ |
0331ee0c TG |
1153 | session->ordered_samples.next_flush = ULLONG_MAX; |
1154 | flush_sample_queue(session, ops); | |
06aae590 | 1155 | out_err: |
11095994 | 1156 | perf_session__warn_about_errors(session, ops); |
020bb75a | 1157 | perf_session_free_sample_buffers(session); |
06aae590 ACM |
1158 | return err; |
1159 | } | |
27295592 | 1160 | |
6122e4e4 ACM |
1161 | int perf_session__process_events(struct perf_session *self, |
1162 | struct perf_event_ops *ops) | |
1163 | { | |
1164 | int err; | |
1165 | ||
1166 | if (perf_session__register_idle_thread(self) == NULL) | |
1167 | return -ENOMEM; | |
1168 | ||
8dc58101 TZ |
1169 | if (!self->fd_pipe) |
1170 | err = __perf_session__process_events(self, | |
1171 | self->header.data_offset, | |
1172 | self->header.data_size, | |
1173 | self->size, ops); | |
1174 | else | |
1175 | err = __perf_session__process_pipe_events(self, ops); | |
88ca895d | 1176 | |
6122e4e4 ACM |
1177 | return err; |
1178 | } | |
1179 | ||
d549c769 | 1180 | bool perf_session__has_traces(struct perf_session *self, const char *msg) |
27295592 ACM |
1181 | { |
1182 | if (!(self->sample_type & PERF_SAMPLE_RAW)) { | |
d549c769 ACM |
1183 | pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg); |
1184 | return false; | |
27295592 ACM |
1185 | } |
1186 | ||
d549c769 | 1187 | return true; |
27295592 | 1188 | } |
56b03f3c | 1189 | |
743eb868 ACM |
1190 | int maps__set_kallsyms_ref_reloc_sym(struct map **maps, |
1191 | const char *symbol_name, u64 addr) | |
56b03f3c ACM |
1192 | { |
1193 | char *bracket; | |
9de89fe7 | 1194 | enum map_type i; |
a1645ce1 ZY |
1195 | struct ref_reloc_sym *ref; |
1196 | ||
1197 | ref = zalloc(sizeof(struct ref_reloc_sym)); | |
1198 | if (ref == NULL) | |
1199 | return -ENOMEM; | |
56b03f3c | 1200 | |
a1645ce1 ZY |
1201 | ref->name = strdup(symbol_name); |
1202 | if (ref->name == NULL) { | |
1203 | free(ref); | |
56b03f3c | 1204 | return -ENOMEM; |
a1645ce1 | 1205 | } |
56b03f3c | 1206 | |
a1645ce1 | 1207 | bracket = strchr(ref->name, ']'); |
56b03f3c ACM |
1208 | if (bracket) |
1209 | *bracket = '\0'; | |
1210 | ||
a1645ce1 | 1211 | ref->addr = addr; |
9de89fe7 ACM |
1212 | |
1213 | for (i = 0; i < MAP__NR_TYPES; ++i) { | |
a1645ce1 ZY |
1214 | struct kmap *kmap = map__kmap(maps[i]); |
1215 | kmap->ref_reloc_sym = ref; | |
9de89fe7 ACM |
1216 | } |
1217 | ||
56b03f3c ACM |
1218 | return 0; |
1219 | } | |
1f626bc3 ACM |
1220 | |
1221 | size_t perf_session__fprintf_dsos(struct perf_session *self, FILE *fp) | |
1222 | { | |
1223 | return __dsos__fprintf(&self->host_machine.kernel_dsos, fp) + | |
1224 | __dsos__fprintf(&self->host_machine.user_dsos, fp) + | |
1225 | machines__fprintf_dsos(&self->machines, fp); | |
1226 | } | |
f869097e ACM |
1227 | |
1228 | size_t perf_session__fprintf_dsos_buildid(struct perf_session *self, FILE *fp, | |
1229 | bool with_hits) | |
1230 | { | |
1231 | size_t ret = machine__fprintf_dsos_buildid(&self->host_machine, fp, with_hits); | |
1232 | return ret + machines__fprintf_dsos_buildid(&self->machines, fp, with_hits); | |
1233 | } | |
e248de33 ACM |
1234 | |
1235 | size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp) | |
1236 | { | |
1237 | struct perf_evsel *pos; | |
1238 | size_t ret = fprintf(fp, "Aggregated stats:\n"); | |
1239 | ||
1240 | ret += hists__fprintf_nr_events(&session->hists, fp); | |
1241 | ||
1242 | list_for_each_entry(pos, &session->evlist->entries, node) { | |
1243 | ret += fprintf(fp, "%s stats:\n", event_name(pos)); | |
1244 | ret += hists__fprintf_nr_events(&pos->hists, fp); | |
1245 | } | |
1246 | ||
1247 | return ret; | |
1248 | } | |
c0230b2b | 1249 | |
b424eba2 ACM |
1250 | size_t perf_session__fprintf(struct perf_session *session, FILE *fp) |
1251 | { | |
1252 | /* | |
1253 | * FIXME: Here we have to actually print all the machines in this | |
1254 | * session, not just the host... | |
1255 | */ | |
1256 | return machine__fprintf(&session->host_machine, fp); | |
1257 | } | |
1258 | ||
1259 | void perf_session__remove_thread(struct perf_session *session, | |
1260 | struct thread *th) | |
1261 | { | |
1262 | /* | |
1263 | * FIXME: This one makes no sense, we need to remove the thread from | |
1264 | * the machine it belongs to, perf_session can have many machines, so | |
1265 | * doing it always on ->host_machine is wrong. Fix when auditing all | |
1266 | * the 'perf kvm' code. | |
1267 | */ | |
1268 | machine__remove_thread(&session->host_machine, th); | |
1269 | } | |
1270 | ||
9cbdb702 DA |
1271 | struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session, |
1272 | unsigned int type) | |
1273 | { | |
1274 | struct perf_evsel *pos; | |
1275 | ||
1276 | list_for_each_entry(pos, &session->evlist->entries, node) { | |
1277 | if (pos->attr.type == type) | |
1278 | return pos; | |
1279 | } | |
1280 | return NULL; | |
1281 | } | |
1282 | ||
743eb868 ACM |
1283 | void perf_event__print_ip(union perf_event *event, struct perf_sample *sample, |
1284 | struct machine *machine, struct perf_evsel *evsel, | |
1285 | int print_sym, int print_dso) | |
c0230b2b DA |
1286 | { |
1287 | struct addr_location al; | |
1288 | const char *symname, *dsoname; | |
246d4ce8 | 1289 | struct callchain_cursor *cursor = &evsel->hists.callchain_cursor; |
c0230b2b DA |
1290 | struct callchain_cursor_node *node; |
1291 | ||
743eb868 | 1292 | if (perf_event__preprocess_sample(event, machine, &al, sample, |
c0230b2b DA |
1293 | NULL) < 0) { |
1294 | error("problem processing %d event, skipping it.\n", | |
1295 | event->header.type); | |
1296 | return; | |
1297 | } | |
1298 | ||
1299 | if (symbol_conf.use_callchain && sample->callchain) { | |
1300 | ||
743eb868 | 1301 | if (machine__resolve_callchain(machine, evsel, al.thread, |
c0230b2b DA |
1302 | sample->callchain, NULL) != 0) { |
1303 | if (verbose) | |
1304 | error("Failed to resolve callchain. Skipping\n"); | |
1305 | return; | |
1306 | } | |
1307 | callchain_cursor_commit(cursor); | |
1308 | ||
1309 | while (1) { | |
1310 | node = callchain_cursor_current(cursor); | |
1311 | if (!node) | |
1312 | break; | |
1313 | ||
787bef17 DA |
1314 | printf("\t%16" PRIx64, node->ip); |
1315 | if (print_sym) { | |
1316 | if (node->sym && node->sym->name) | |
1317 | symname = node->sym->name; | |
1318 | else | |
1319 | symname = ""; | |
c0230b2b | 1320 | |
610723f2 DA |
1321 | printf(" %s", symname); |
1322 | } | |
1323 | if (print_dso) { | |
787bef17 DA |
1324 | if (node->map && node->map->dso && node->map->dso->name) |
1325 | dsoname = node->map->dso->name; | |
1326 | else | |
1327 | dsoname = ""; | |
c0230b2b | 1328 | |
610723f2 | 1329 | printf(" (%s)", dsoname); |
787bef17 DA |
1330 | } |
1331 | printf("\n"); | |
c0230b2b DA |
1332 | |
1333 | callchain_cursor_advance(cursor); | |
1334 | } | |
1335 | ||
1336 | } else { | |
adc4bf99 | 1337 | printf("%16" PRIx64, sample->ip); |
787bef17 DA |
1338 | if (print_sym) { |
1339 | if (al.sym && al.sym->name) | |
1340 | symname = al.sym->name; | |
1341 | else | |
1342 | symname = ""; | |
c0230b2b | 1343 | |
610723f2 DA |
1344 | printf(" %s", symname); |
1345 | } | |
1346 | ||
1347 | if (print_dso) { | |
787bef17 DA |
1348 | if (al.map && al.map->dso && al.map->dso->name) |
1349 | dsoname = al.map->dso->name; | |
1350 | else | |
1351 | dsoname = ""; | |
c0230b2b | 1352 | |
610723f2 | 1353 | printf(" (%s)", dsoname); |
787bef17 | 1354 | } |
c0230b2b DA |
1355 | } |
1356 | } | |
5d67be97 AB |
1357 | |
1358 | int perf_session__cpu_bitmap(struct perf_session *session, | |
1359 | const char *cpu_list, unsigned long *cpu_bitmap) | |
1360 | { | |
1361 | int i; | |
1362 | struct cpu_map *map; | |
1363 | ||
1364 | for (i = 0; i < PERF_TYPE_MAX; ++i) { | |
1365 | struct perf_evsel *evsel; | |
1366 | ||
1367 | evsel = perf_session__find_first_evtype(session, i); | |
1368 | if (!evsel) | |
1369 | continue; | |
1370 | ||
1371 | if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) { | |
1372 | pr_err("File does not contain CPU events. " | |
1373 | "Remove -c option to proceed.\n"); | |
1374 | return -1; | |
1375 | } | |
1376 | } | |
1377 | ||
1378 | map = cpu_map__new(cpu_list); | |
1379 | ||
1380 | for (i = 0; i < map->nr; i++) { | |
1381 | int cpu = map->map[i]; | |
1382 | ||
1383 | if (cpu >= MAX_NR_CPUS) { | |
1384 | pr_err("Requested CPU %d too large. " | |
1385 | "Consider raising MAX_NR_CPUS\n", cpu); | |
1386 | return -1; | |
1387 | } | |
1388 | ||
1389 | set_bit(cpu, cpu_bitmap); | |
1390 | } | |
1391 | ||
1392 | return 0; | |
1393 | } | |
fbe96f29 SE |
1394 | |
1395 | void perf_session__fprintf_info(struct perf_session *session, FILE *fp, | |
1396 | bool full) | |
1397 | { | |
1398 | struct stat st; | |
1399 | int ret; | |
1400 | ||
1401 | if (session == NULL || fp == NULL) | |
1402 | return; | |
1403 | ||
1404 | ret = fstat(session->fd, &st); | |
1405 | if (ret == -1) | |
1406 | return; | |
1407 | ||
1408 | fprintf(fp, "# ========\n"); | |
1409 | fprintf(fp, "# captured on: %s", ctime(&st.st_ctime)); | |
1410 | perf_header__fprintf_info(session, fp, full); | |
1411 | fprintf(fp, "# ========\n#\n"); | |
1412 | } |