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" |
45694aa7 | 13 | #include "tool.h" |
a328626b | 14 | #include "sort.h" |
94c744b6 | 15 | #include "util.h" |
5d67be97 | 16 | #include "cpumap.h" |
94c744b6 ACM |
17 | |
18 | static int perf_session__open(struct perf_session *self, bool force) | |
19 | { | |
20 | struct stat input_stat; | |
21 | ||
8dc58101 TZ |
22 | if (!strcmp(self->filename, "-")) { |
23 | self->fd_pipe = true; | |
24 | self->fd = STDIN_FILENO; | |
25 | ||
a91e5431 | 26 | if (perf_session__read_header(self, self->fd) < 0) |
8dc58101 TZ |
27 | pr_err("incompatible file format"); |
28 | ||
29 | return 0; | |
30 | } | |
31 | ||
f887f301 | 32 | self->fd = open(self->filename, O_RDONLY); |
94c744b6 | 33 | if (self->fd < 0) { |
0f2c3de2 AI |
34 | int err = errno; |
35 | ||
36 | pr_err("failed to open %s: %s", self->filename, strerror(err)); | |
37 | if (err == ENOENT && !strcmp(self->filename, "perf.data")) | |
94c744b6 ACM |
38 | pr_err(" (try 'perf record' first)"); |
39 | pr_err("\n"); | |
40 | return -errno; | |
41 | } | |
42 | ||
43 | if (fstat(self->fd, &input_stat) < 0) | |
44 | goto out_close; | |
45 | ||
46 | if (!force && input_stat.st_uid && (input_stat.st_uid != geteuid())) { | |
47 | pr_err("file %s not owned by current user or root\n", | |
48 | self->filename); | |
49 | goto out_close; | |
50 | } | |
51 | ||
52 | if (!input_stat.st_size) { | |
53 | pr_info("zero-sized file (%s), nothing to do!\n", | |
54 | self->filename); | |
55 | goto out_close; | |
56 | } | |
57 | ||
a91e5431 | 58 | if (perf_session__read_header(self, self->fd) < 0) { |
94c744b6 ACM |
59 | pr_err("incompatible file format"); |
60 | goto out_close; | |
61 | } | |
62 | ||
c2a70653 ACM |
63 | if (!perf_evlist__valid_sample_type(self->evlist)) { |
64 | pr_err("non matching sample_type"); | |
65 | goto out_close; | |
66 | } | |
67 | ||
68 | if (!perf_evlist__valid_sample_id_all(self->evlist)) { | |
69 | pr_err("non matching sample_id_all"); | |
70 | goto out_close; | |
71 | } | |
72 | ||
94c744b6 ACM |
73 | self->size = input_stat.st_size; |
74 | return 0; | |
75 | ||
76 | out_close: | |
77 | close(self->fd); | |
78 | self->fd = -1; | |
79 | return -1; | |
80 | } | |
81 | ||
9c90a61c ACM |
82 | void perf_session__update_sample_type(struct perf_session *self) |
83 | { | |
a91e5431 | 84 | self->sample_type = perf_evlist__sample_type(self->evlist); |
c2a70653 | 85 | self->sample_size = __perf_evsel__sample_size(self->sample_type); |
a91e5431 | 86 | self->sample_id_all = perf_evlist__sample_id_all(self->evlist); |
81e36bff | 87 | self->id_hdr_size = perf_evlist__id_hdr_size(self->evlist); |
743eb868 | 88 | self->host_machine.id_hdr_size = self->id_hdr_size; |
9c90a61c ACM |
89 | } |
90 | ||
a1645ce1 ZY |
91 | int perf_session__create_kernel_maps(struct perf_session *self) |
92 | { | |
d118f8ba | 93 | int ret = machine__create_kernel_maps(&self->host_machine); |
a1645ce1 | 94 | |
a1645ce1 | 95 | if (ret >= 0) |
d118f8ba | 96 | ret = machines__create_guest_kernel_maps(&self->machines); |
a1645ce1 ZY |
97 | return ret; |
98 | } | |
99 | ||
076c6e45 ACM |
100 | static void perf_session__destroy_kernel_maps(struct perf_session *self) |
101 | { | |
102 | machine__destroy_kernel_maps(&self->host_machine); | |
103 | machines__destroy_guest_kernel_maps(&self->machines); | |
104 | } | |
105 | ||
21ef97f0 IM |
106 | struct perf_session *perf_session__new(const char *filename, int mode, |
107 | bool force, bool repipe, | |
45694aa7 | 108 | struct perf_tool *tool) |
94c744b6 | 109 | { |
002c4fd9 | 110 | size_t len = filename ? strlen(filename) : 0; |
94c744b6 ACM |
111 | struct perf_session *self = zalloc(sizeof(*self) + len); |
112 | ||
113 | if (self == NULL) | |
114 | goto out; | |
115 | ||
94c744b6 | 116 | memcpy(self->filename, filename, len); |
55b44629 TG |
117 | /* |
118 | * On 64bit we can mmap the data file in one go. No need for tiny mmap | |
119 | * slices. On 32bit we use 32MB. | |
120 | */ | |
121 | #if BITS_PER_LONG == 64 | |
122 | self->mmap_window = ULLONG_MAX; | |
123 | #else | |
124 | self->mmap_window = 32 * 1024 * 1024ULL; | |
125 | #endif | |
23346f21 | 126 | self->machines = RB_ROOT; |
454c407e | 127 | self->repipe = repipe; |
a1225dec | 128 | INIT_LIST_HEAD(&self->ordered_samples.samples); |
020bb75a | 129 | INIT_LIST_HEAD(&self->ordered_samples.sample_cache); |
5c891f38 | 130 | INIT_LIST_HEAD(&self->ordered_samples.to_free); |
1f626bc3 | 131 | machine__init(&self->host_machine, "", HOST_KERNEL_ID); |
94c744b6 | 132 | |
64abebf7 ACM |
133 | if (mode == O_RDONLY) { |
134 | if (perf_session__open(self, force) < 0) | |
135 | goto out_delete; | |
a91e5431 | 136 | perf_session__update_sample_type(self); |
64abebf7 ACM |
137 | } else if (mode == O_WRONLY) { |
138 | /* | |
139 | * In O_RDONLY mode this will be performed when reading the | |
8115d60c | 140 | * kernel MMAP event, in perf_event__process_mmap(). |
64abebf7 ACM |
141 | */ |
142 | if (perf_session__create_kernel_maps(self) < 0) | |
143 | goto out_delete; | |
144 | } | |
d549c769 | 145 | |
45694aa7 ACM |
146 | if (tool && tool->ordering_requires_timestamps && |
147 | tool->ordered_samples && !self->sample_id_all) { | |
21ef97f0 | 148 | dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n"); |
45694aa7 | 149 | tool->ordered_samples = false; |
21ef97f0 IM |
150 | } |
151 | ||
94c744b6 ACM |
152 | out: |
153 | return self; | |
4aa65636 ACM |
154 | out_delete: |
155 | perf_session__delete(self); | |
156 | return NULL; | |
94c744b6 ACM |
157 | } |
158 | ||
b424eba2 | 159 | static void machine__delete_dead_threads(struct machine *machine) |
d65a458b ACM |
160 | { |
161 | struct thread *n, *t; | |
162 | ||
b424eba2 | 163 | list_for_each_entry_safe(t, n, &machine->dead_threads, node) { |
d65a458b ACM |
164 | list_del(&t->node); |
165 | thread__delete(t); | |
166 | } | |
167 | } | |
168 | ||
b424eba2 ACM |
169 | static void perf_session__delete_dead_threads(struct perf_session *session) |
170 | { | |
171 | machine__delete_dead_threads(&session->host_machine); | |
172 | } | |
173 | ||
174 | static void machine__delete_threads(struct machine *self) | |
d65a458b ACM |
175 | { |
176 | struct rb_node *nd = rb_first(&self->threads); | |
177 | ||
178 | while (nd) { | |
179 | struct thread *t = rb_entry(nd, struct thread, rb_node); | |
180 | ||
181 | rb_erase(&t->rb_node, &self->threads); | |
182 | nd = rb_next(nd); | |
183 | thread__delete(t); | |
184 | } | |
185 | } | |
186 | ||
b424eba2 ACM |
187 | static void perf_session__delete_threads(struct perf_session *session) |
188 | { | |
189 | machine__delete_threads(&session->host_machine); | |
190 | } | |
191 | ||
94c744b6 ACM |
192 | void perf_session__delete(struct perf_session *self) |
193 | { | |
076c6e45 | 194 | perf_session__destroy_kernel_maps(self); |
d65a458b ACM |
195 | perf_session__delete_dead_threads(self); |
196 | perf_session__delete_threads(self); | |
197 | machine__exit(&self->host_machine); | |
94c744b6 ACM |
198 | close(self->fd); |
199 | free(self); | |
200 | } | |
a328626b | 201 | |
b424eba2 | 202 | void machine__remove_thread(struct machine *self, struct thread *th) |
720a3aeb | 203 | { |
70597f21 | 204 | self->last_match = NULL; |
720a3aeb ACM |
205 | rb_erase(&th->rb_node, &self->threads); |
206 | /* | |
207 | * We may have references to this thread, for instance in some hist_entry | |
208 | * instances, so just move them to a separate list. | |
209 | */ | |
210 | list_add_tail(&th->node, &self->dead_threads); | |
211 | } | |
212 | ||
a328626b ACM |
213 | static bool symbol__match_parent_regex(struct symbol *sym) |
214 | { | |
215 | if (sym->name && !regexec(&parent_regex, sym->name, 0, NULL, 0)) | |
216 | return 1; | |
217 | ||
218 | return 0; | |
219 | } | |
220 | ||
743eb868 ACM |
221 | int machine__resolve_callchain(struct machine *self, struct perf_evsel *evsel, |
222 | struct thread *thread, | |
223 | struct ip_callchain *chain, | |
224 | struct symbol **parent) | |
a328626b ACM |
225 | { |
226 | u8 cpumode = PERF_RECORD_MISC_USER; | |
a328626b | 227 | unsigned int i; |
1b3a0e95 | 228 | int err; |
a328626b | 229 | |
246d4ce8 | 230 | callchain_cursor_reset(&evsel->hists.callchain_cursor); |
a328626b ACM |
231 | |
232 | for (i = 0; i < chain->nr; i++) { | |
d797fdc5 | 233 | u64 ip; |
a328626b ACM |
234 | struct addr_location al; |
235 | ||
d797fdc5 SL |
236 | if (callchain_param.order == ORDER_CALLEE) |
237 | ip = chain->ips[i]; | |
238 | else | |
239 | ip = chain->ips[chain->nr - i - 1]; | |
240 | ||
a328626b ACM |
241 | if (ip >= PERF_CONTEXT_MAX) { |
242 | switch (ip) { | |
243 | case PERF_CONTEXT_HV: | |
244 | cpumode = PERF_RECORD_MISC_HYPERVISOR; break; | |
245 | case PERF_CONTEXT_KERNEL: | |
246 | cpumode = PERF_RECORD_MISC_KERNEL; break; | |
247 | case PERF_CONTEXT_USER: | |
248 | cpumode = PERF_RECORD_MISC_USER; break; | |
249 | default: | |
250 | break; | |
251 | } | |
252 | continue; | |
253 | } | |
254 | ||
a1645ce1 | 255 | al.filtered = false; |
a328626b | 256 | thread__find_addr_location(thread, self, cpumode, |
743eb868 | 257 | MAP__FUNCTION, ip, &al, NULL); |
a328626b ACM |
258 | if (al.sym != NULL) { |
259 | if (sort__has_parent && !*parent && | |
260 | symbol__match_parent_regex(al.sym)) | |
261 | *parent = al.sym; | |
d599db3f | 262 | if (!symbol_conf.use_callchain) |
a328626b | 263 | break; |
a328626b | 264 | } |
1b3a0e95 | 265 | |
246d4ce8 | 266 | err = callchain_cursor_append(&evsel->hists.callchain_cursor, |
1b3a0e95 FW |
267 | ip, al.map, al.sym); |
268 | if (err) | |
269 | return err; | |
a328626b ACM |
270 | } |
271 | ||
1b3a0e95 | 272 | return 0; |
a328626b | 273 | } |
06aae590 | 274 | |
d20deb64 ACM |
275 | static int process_event_synth_tracing_data_stub(union perf_event *event __used, |
276 | struct perf_session *session __used) | |
277 | { | |
278 | dump_printf(": unhandled!\n"); | |
279 | return 0; | |
280 | } | |
281 | ||
10d0f086 ACM |
282 | static int process_event_synth_attr_stub(union perf_event *event __used, |
283 | struct perf_evlist **pevlist __used) | |
284 | { | |
285 | dump_printf(": unhandled!\n"); | |
286 | return 0; | |
287 | } | |
288 | ||
45694aa7 | 289 | static int process_event_sample_stub(struct perf_tool *tool __used, |
d20deb64 | 290 | union perf_event *event __used, |
9e69c210 ACM |
291 | struct perf_sample *sample __used, |
292 | struct perf_evsel *evsel __used, | |
743eb868 | 293 | struct machine *machine __used) |
9e69c210 ACM |
294 | { |
295 | dump_printf(": unhandled!\n"); | |
296 | return 0; | |
297 | } | |
298 | ||
45694aa7 | 299 | static int process_event_stub(struct perf_tool *tool __used, |
d20deb64 | 300 | union perf_event *event __used, |
8d50e5b4 | 301 | struct perf_sample *sample __used, |
743eb868 | 302 | struct machine *machine __used) |
06aae590 ACM |
303 | { |
304 | dump_printf(": unhandled!\n"); | |
305 | return 0; | |
306 | } | |
307 | ||
45694aa7 | 308 | static int process_finished_round_stub(struct perf_tool *tool __used, |
d20deb64 | 309 | union perf_event *event __used, |
743eb868 ACM |
310 | struct perf_session *perf_session __used) |
311 | { | |
312 | dump_printf(": unhandled!\n"); | |
313 | return 0; | |
314 | } | |
315 | ||
45694aa7 | 316 | static int process_event_type_stub(struct perf_tool *tool __used, |
743eb868 | 317 | union perf_event *event __used) |
d6b17beb FW |
318 | { |
319 | dump_printf(": unhandled!\n"); | |
320 | return 0; | |
321 | } | |
322 | ||
45694aa7 | 323 | static int process_finished_round(struct perf_tool *tool, |
d20deb64 ACM |
324 | union perf_event *event, |
325 | struct perf_session *session); | |
d6b17beb | 326 | |
45694aa7 | 327 | static void perf_tool__fill_defaults(struct perf_tool *tool) |
06aae590 | 328 | { |
45694aa7 ACM |
329 | if (tool->sample == NULL) |
330 | tool->sample = process_event_sample_stub; | |
331 | if (tool->mmap == NULL) | |
332 | tool->mmap = process_event_stub; | |
333 | if (tool->comm == NULL) | |
334 | tool->comm = process_event_stub; | |
335 | if (tool->fork == NULL) | |
336 | tool->fork = process_event_stub; | |
337 | if (tool->exit == NULL) | |
338 | tool->exit = process_event_stub; | |
339 | if (tool->lost == NULL) | |
340 | tool->lost = perf_event__process_lost; | |
341 | if (tool->read == NULL) | |
342 | tool->read = process_event_sample_stub; | |
343 | if (tool->throttle == NULL) | |
344 | tool->throttle = process_event_stub; | |
345 | if (tool->unthrottle == NULL) | |
346 | tool->unthrottle = process_event_stub; | |
347 | if (tool->attr == NULL) | |
348 | tool->attr = process_event_synth_attr_stub; | |
349 | if (tool->event_type == NULL) | |
350 | tool->event_type = process_event_type_stub; | |
351 | if (tool->tracing_data == NULL) | |
352 | tool->tracing_data = process_event_synth_tracing_data_stub; | |
353 | if (tool->build_id == NULL) | |
354 | tool->build_id = process_finished_round_stub; | |
355 | if (tool->finished_round == NULL) { | |
356 | if (tool->ordered_samples) | |
357 | tool->finished_round = process_finished_round; | |
d6b17beb | 358 | else |
45694aa7 | 359 | tool->finished_round = process_finished_round_stub; |
d6b17beb | 360 | } |
06aae590 ACM |
361 | } |
362 | ||
ba21594c ACM |
363 | void mem_bswap_64(void *src, int byte_size) |
364 | { | |
365 | u64 *m = src; | |
366 | ||
367 | while (byte_size > 0) { | |
368 | *m = bswap_64(*m); | |
369 | byte_size -= sizeof(u64); | |
370 | ++m; | |
371 | } | |
372 | } | |
373 | ||
8115d60c | 374 | static void perf_event__all64_swap(union perf_event *event) |
ba21594c | 375 | { |
8115d60c ACM |
376 | struct perf_event_header *hdr = &event->header; |
377 | mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr)); | |
ba21594c ACM |
378 | } |
379 | ||
8115d60c | 380 | static void perf_event__comm_swap(union perf_event *event) |
ba21594c | 381 | { |
8115d60c ACM |
382 | event->comm.pid = bswap_32(event->comm.pid); |
383 | event->comm.tid = bswap_32(event->comm.tid); | |
ba21594c ACM |
384 | } |
385 | ||
8115d60c | 386 | static void perf_event__mmap_swap(union perf_event *event) |
ba21594c | 387 | { |
8115d60c ACM |
388 | event->mmap.pid = bswap_32(event->mmap.pid); |
389 | event->mmap.tid = bswap_32(event->mmap.tid); | |
390 | event->mmap.start = bswap_64(event->mmap.start); | |
391 | event->mmap.len = bswap_64(event->mmap.len); | |
392 | event->mmap.pgoff = bswap_64(event->mmap.pgoff); | |
ba21594c ACM |
393 | } |
394 | ||
8115d60c | 395 | static void perf_event__task_swap(union perf_event *event) |
ba21594c | 396 | { |
8115d60c ACM |
397 | event->fork.pid = bswap_32(event->fork.pid); |
398 | event->fork.tid = bswap_32(event->fork.tid); | |
399 | event->fork.ppid = bswap_32(event->fork.ppid); | |
400 | event->fork.ptid = bswap_32(event->fork.ptid); | |
401 | event->fork.time = bswap_64(event->fork.time); | |
ba21594c ACM |
402 | } |
403 | ||
8115d60c | 404 | static void perf_event__read_swap(union perf_event *event) |
ba21594c | 405 | { |
8115d60c ACM |
406 | event->read.pid = bswap_32(event->read.pid); |
407 | event->read.tid = bswap_32(event->read.tid); | |
408 | event->read.value = bswap_64(event->read.value); | |
409 | event->read.time_enabled = bswap_64(event->read.time_enabled); | |
410 | event->read.time_running = bswap_64(event->read.time_running); | |
411 | event->read.id = bswap_64(event->read.id); | |
ba21594c ACM |
412 | } |
413 | ||
eda3913b DA |
414 | /* exported for swapping attributes in file header */ |
415 | void perf_event__attr_swap(struct perf_event_attr *attr) | |
416 | { | |
417 | attr->type = bswap_32(attr->type); | |
418 | attr->size = bswap_32(attr->size); | |
419 | attr->config = bswap_64(attr->config); | |
420 | attr->sample_period = bswap_64(attr->sample_period); | |
421 | attr->sample_type = bswap_64(attr->sample_type); | |
422 | attr->read_format = bswap_64(attr->read_format); | |
423 | attr->wakeup_events = bswap_32(attr->wakeup_events); | |
424 | attr->bp_type = bswap_32(attr->bp_type); | |
425 | attr->bp_addr = bswap_64(attr->bp_addr); | |
426 | attr->bp_len = bswap_64(attr->bp_len); | |
427 | } | |
428 | ||
429 | static void perf_event__hdr_attr_swap(union perf_event *event) | |
2c46dbb5 TZ |
430 | { |
431 | size_t size; | |
432 | ||
eda3913b | 433 | perf_event__attr_swap(&event->attr.attr); |
2c46dbb5 | 434 | |
8115d60c ACM |
435 | size = event->header.size; |
436 | size -= (void *)&event->attr.id - (void *)event; | |
437 | mem_bswap_64(event->attr.id, size); | |
2c46dbb5 TZ |
438 | } |
439 | ||
8115d60c | 440 | static void perf_event__event_type_swap(union perf_event *event) |
cd19a035 | 441 | { |
8115d60c ACM |
442 | event->event_type.event_type.event_id = |
443 | bswap_64(event->event_type.event_type.event_id); | |
cd19a035 TZ |
444 | } |
445 | ||
8115d60c | 446 | static void perf_event__tracing_data_swap(union perf_event *event) |
9215545e | 447 | { |
8115d60c | 448 | event->tracing_data.size = bswap_32(event->tracing_data.size); |
9215545e TZ |
449 | } |
450 | ||
8115d60c | 451 | typedef void (*perf_event__swap_op)(union perf_event *event); |
ba21594c | 452 | |
8115d60c ACM |
453 | static perf_event__swap_op perf_event__swap_ops[] = { |
454 | [PERF_RECORD_MMAP] = perf_event__mmap_swap, | |
455 | [PERF_RECORD_COMM] = perf_event__comm_swap, | |
456 | [PERF_RECORD_FORK] = perf_event__task_swap, | |
457 | [PERF_RECORD_EXIT] = perf_event__task_swap, | |
458 | [PERF_RECORD_LOST] = perf_event__all64_swap, | |
459 | [PERF_RECORD_READ] = perf_event__read_swap, | |
460 | [PERF_RECORD_SAMPLE] = perf_event__all64_swap, | |
eda3913b | 461 | [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap, |
8115d60c ACM |
462 | [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap, |
463 | [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap, | |
464 | [PERF_RECORD_HEADER_BUILD_ID] = NULL, | |
465 | [PERF_RECORD_HEADER_MAX] = NULL, | |
ba21594c ACM |
466 | }; |
467 | ||
c61e52ee FW |
468 | struct sample_queue { |
469 | u64 timestamp; | |
e4c2df13 | 470 | u64 file_offset; |
8115d60c | 471 | union perf_event *event; |
c61e52ee FW |
472 | struct list_head list; |
473 | }; | |
474 | ||
020bb75a TG |
475 | static void perf_session_free_sample_buffers(struct perf_session *session) |
476 | { | |
477 | struct ordered_samples *os = &session->ordered_samples; | |
478 | ||
5c891f38 | 479 | while (!list_empty(&os->to_free)) { |
020bb75a TG |
480 | struct sample_queue *sq; |
481 | ||
5c891f38 | 482 | sq = list_entry(os->to_free.next, struct sample_queue, list); |
020bb75a TG |
483 | list_del(&sq->list); |
484 | free(sq); | |
485 | } | |
486 | } | |
487 | ||
cbf41645 | 488 | static int perf_session_deliver_event(struct perf_session *session, |
8115d60c | 489 | union perf_event *event, |
8d50e5b4 | 490 | struct perf_sample *sample, |
45694aa7 | 491 | struct perf_tool *tool, |
f74725dc | 492 | u64 file_offset); |
cbf41645 | 493 | |
c61e52ee | 494 | static void flush_sample_queue(struct perf_session *s, |
45694aa7 | 495 | struct perf_tool *tool) |
c61e52ee | 496 | { |
a1225dec TG |
497 | struct ordered_samples *os = &s->ordered_samples; |
498 | struct list_head *head = &os->samples; | |
c61e52ee | 499 | struct sample_queue *tmp, *iter; |
8d50e5b4 | 500 | struct perf_sample sample; |
a1225dec TG |
501 | u64 limit = os->next_flush; |
502 | u64 last_ts = os->last_sample ? os->last_sample->timestamp : 0ULL; | |
88660563 | 503 | unsigned idx = 0, progress_next = os->nr_samples / 16; |
5538beca | 504 | int ret; |
c61e52ee | 505 | |
45694aa7 | 506 | if (!tool->ordered_samples || !limit) |
c61e52ee FW |
507 | return; |
508 | ||
509 | list_for_each_entry_safe(iter, tmp, head, list) { | |
510 | if (iter->timestamp > limit) | |
a1225dec | 511 | break; |
c61e52ee | 512 | |
5538beca FW |
513 | ret = perf_session__parse_sample(s, iter->event, &sample); |
514 | if (ret) | |
515 | pr_err("Can't parse sample, err = %d\n", ret); | |
516 | else | |
45694aa7 | 517 | perf_session_deliver_event(s, iter->event, &sample, tool, |
5538beca | 518 | iter->file_offset); |
c61e52ee | 519 | |
a1225dec | 520 | os->last_flush = iter->timestamp; |
c61e52ee | 521 | list_del(&iter->list); |
020bb75a | 522 | list_add(&iter->list, &os->sample_cache); |
88660563 ACM |
523 | if (++idx >= progress_next) { |
524 | progress_next += os->nr_samples / 16; | |
525 | ui_progress__update(idx, os->nr_samples, | |
526 | "Processing time ordered events..."); | |
527 | } | |
c61e52ee | 528 | } |
a1225dec TG |
529 | |
530 | if (list_empty(head)) { | |
531 | os->last_sample = NULL; | |
532 | } else if (last_ts <= limit) { | |
533 | os->last_sample = | |
534 | list_entry(head->prev, struct sample_queue, list); | |
535 | } | |
88660563 ACM |
536 | |
537 | os->nr_samples = 0; | |
c61e52ee FW |
538 | } |
539 | ||
d6b17beb FW |
540 | /* |
541 | * When perf record finishes a pass on every buffers, it records this pseudo | |
542 | * event. | |
543 | * We record the max timestamp t found in the pass n. | |
544 | * Assuming these timestamps are monotonic across cpus, we know that if | |
545 | * a buffer still has events with timestamps below t, they will be all | |
546 | * available and then read in the pass n + 1. | |
547 | * Hence when we start to read the pass n + 2, we can safely flush every | |
548 | * events with timestamps below t. | |
549 | * | |
550 | * ============ PASS n ================= | |
551 | * CPU 0 | CPU 1 | |
552 | * | | |
553 | * cnt1 timestamps | cnt2 timestamps | |
554 | * 1 | 2 | |
555 | * 2 | 3 | |
556 | * - | 4 <--- max recorded | |
557 | * | |
558 | * ============ PASS n + 1 ============== | |
559 | * CPU 0 | CPU 1 | |
560 | * | | |
561 | * cnt1 timestamps | cnt2 timestamps | |
562 | * 3 | 5 | |
563 | * 4 | 6 | |
564 | * 5 | 7 <---- max recorded | |
565 | * | |
566 | * Flush every events below timestamp 4 | |
567 | * | |
568 | * ============ PASS n + 2 ============== | |
569 | * CPU 0 | CPU 1 | |
570 | * | | |
571 | * cnt1 timestamps | cnt2 timestamps | |
572 | * 6 | 8 | |
573 | * 7 | 9 | |
574 | * - | 10 | |
575 | * | |
576 | * Flush every events below timestamp 7 | |
577 | * etc... | |
578 | */ | |
45694aa7 | 579 | static int process_finished_round(struct perf_tool *tool, |
d20deb64 ACM |
580 | union perf_event *event __used, |
581 | struct perf_session *session) | |
d6b17beb | 582 | { |
45694aa7 | 583 | flush_sample_queue(session, tool); |
d6b17beb FW |
584 | session->ordered_samples.next_flush = session->ordered_samples.max_timestamp; |
585 | ||
586 | return 0; | |
587 | } | |
588 | ||
c61e52ee | 589 | /* The queue is ordered by time */ |
cbf41645 | 590 | static void __queue_event(struct sample_queue *new, struct perf_session *s) |
c61e52ee | 591 | { |
a1225dec TG |
592 | struct ordered_samples *os = &s->ordered_samples; |
593 | struct sample_queue *sample = os->last_sample; | |
594 | u64 timestamp = new->timestamp; | |
595 | struct list_head *p; | |
c61e52ee | 596 | |
88660563 | 597 | ++os->nr_samples; |
a1225dec | 598 | os->last_sample = new; |
c61e52ee | 599 | |
a1225dec TG |
600 | if (!sample) { |
601 | list_add(&new->list, &os->samples); | |
602 | os->max_timestamp = timestamp; | |
c61e52ee FW |
603 | return; |
604 | } | |
605 | ||
606 | /* | |
a1225dec TG |
607 | * last_sample might point to some random place in the list as it's |
608 | * the last queued event. We expect that the new event is close to | |
609 | * this. | |
c61e52ee | 610 | */ |
a1225dec TG |
611 | if (sample->timestamp <= timestamp) { |
612 | while (sample->timestamp <= timestamp) { | |
613 | p = sample->list.next; | |
614 | if (p == &os->samples) { | |
615 | list_add_tail(&new->list, &os->samples); | |
616 | os->max_timestamp = timestamp; | |
617 | return; | |
618 | } | |
619 | sample = list_entry(p, struct sample_queue, list); | |
620 | } | |
621 | list_add_tail(&new->list, &sample->list); | |
622 | } else { | |
623 | while (sample->timestamp > timestamp) { | |
624 | p = sample->list.prev; | |
625 | if (p == &os->samples) { | |
626 | list_add(&new->list, &os->samples); | |
627 | return; | |
628 | } | |
629 | sample = list_entry(p, struct sample_queue, list); | |
630 | } | |
631 | list_add(&new->list, &sample->list); | |
632 | } | |
c61e52ee FW |
633 | } |
634 | ||
5c891f38 TG |
635 | #define MAX_SAMPLE_BUFFER (64 * 1024 / sizeof(struct sample_queue)) |
636 | ||
8115d60c | 637 | static int perf_session_queue_event(struct perf_session *s, union perf_event *event, |
8d50e5b4 | 638 | struct perf_sample *sample, u64 file_offset) |
c61e52ee | 639 | { |
5c891f38 TG |
640 | struct ordered_samples *os = &s->ordered_samples; |
641 | struct list_head *sc = &os->sample_cache; | |
8d50e5b4 | 642 | u64 timestamp = sample->time; |
c61e52ee | 643 | struct sample_queue *new; |
c61e52ee | 644 | |
79a14c1f | 645 | if (!timestamp || timestamp == ~0ULL) |
cbf41645 TG |
646 | return -ETIME; |
647 | ||
c61e52ee FW |
648 | if (timestamp < s->ordered_samples.last_flush) { |
649 | printf("Warning: Timestamp below last timeslice flush\n"); | |
650 | return -EINVAL; | |
651 | } | |
652 | ||
020bb75a TG |
653 | if (!list_empty(sc)) { |
654 | new = list_entry(sc->next, struct sample_queue, list); | |
655 | list_del(&new->list); | |
5c891f38 TG |
656 | } else if (os->sample_buffer) { |
657 | new = os->sample_buffer + os->sample_buffer_idx; | |
658 | if (++os->sample_buffer_idx == MAX_SAMPLE_BUFFER) | |
659 | os->sample_buffer = NULL; | |
020bb75a | 660 | } else { |
5c891f38 TG |
661 | os->sample_buffer = malloc(MAX_SAMPLE_BUFFER * sizeof(*new)); |
662 | if (!os->sample_buffer) | |
020bb75a | 663 | return -ENOMEM; |
5c891f38 TG |
664 | list_add(&os->sample_buffer->list, &os->to_free); |
665 | os->sample_buffer_idx = 2; | |
666 | new = os->sample_buffer + 1; | |
020bb75a | 667 | } |
c61e52ee FW |
668 | |
669 | new->timestamp = timestamp; | |
e4c2df13 | 670 | new->file_offset = file_offset; |
fe174207 | 671 | new->event = event; |
c61e52ee | 672 | |
cbf41645 | 673 | __queue_event(new, s); |
640c03ce | 674 | |
640c03ce ACM |
675 | return 0; |
676 | } | |
c61e52ee | 677 | |
8d50e5b4 | 678 | static void callchain__printf(struct perf_sample *sample) |
640c03ce ACM |
679 | { |
680 | unsigned int i; | |
c61e52ee | 681 | |
9486aa38 | 682 | printf("... chain: nr:%" PRIu64 "\n", sample->callchain->nr); |
640c03ce ACM |
683 | |
684 | for (i = 0; i < sample->callchain->nr; i++) | |
9486aa38 ACM |
685 | printf("..... %2d: %016" PRIx64 "\n", |
686 | i, sample->callchain->ips[i]); | |
c61e52ee FW |
687 | } |
688 | ||
9c90a61c | 689 | static void perf_session__print_tstamp(struct perf_session *session, |
8115d60c | 690 | union perf_event *event, |
8d50e5b4 | 691 | struct perf_sample *sample) |
9c90a61c ACM |
692 | { |
693 | if (event->header.type != PERF_RECORD_SAMPLE && | |
694 | !session->sample_id_all) { | |
695 | fputs("-1 -1 ", stdout); | |
696 | return; | |
697 | } | |
698 | ||
699 | if ((session->sample_type & PERF_SAMPLE_CPU)) | |
700 | printf("%u ", sample->cpu); | |
701 | ||
702 | if (session->sample_type & PERF_SAMPLE_TIME) | |
9486aa38 | 703 | printf("%" PRIu64 " ", sample->time); |
9c90a61c ACM |
704 | } |
705 | ||
8115d60c | 706 | static void dump_event(struct perf_session *session, union perf_event *event, |
8d50e5b4 | 707 | u64 file_offset, struct perf_sample *sample) |
9aefcab0 TG |
708 | { |
709 | if (!dump_trace) | |
710 | return; | |
711 | ||
9486aa38 ACM |
712 | printf("\n%#" PRIx64 " [%#x]: event: %d\n", |
713 | file_offset, event->header.size, event->header.type); | |
9aefcab0 TG |
714 | |
715 | trace_event(event); | |
716 | ||
717 | if (sample) | |
718 | perf_session__print_tstamp(session, event, sample); | |
719 | ||
9486aa38 | 720 | printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset, |
8115d60c | 721 | event->header.size, perf_event__name(event->header.type)); |
9aefcab0 TG |
722 | } |
723 | ||
8115d60c | 724 | static void dump_sample(struct perf_session *session, union perf_event *event, |
8d50e5b4 | 725 | struct perf_sample *sample) |
9aefcab0 | 726 | { |
ddbc24b7 ACM |
727 | if (!dump_trace) |
728 | return; | |
729 | ||
7cec0922 | 730 | printf("(IP, %d): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n", |
9486aa38 | 731 | event->header.misc, sample->pid, sample->tid, sample->ip, |
7cec0922 | 732 | sample->period, sample->addr); |
9aefcab0 TG |
733 | |
734 | if (session->sample_type & PERF_SAMPLE_CALLCHAIN) | |
ddbc24b7 | 735 | callchain__printf(sample); |
9aefcab0 TG |
736 | } |
737 | ||
743eb868 ACM |
738 | static struct machine * |
739 | perf_session__find_machine_for_cpumode(struct perf_session *session, | |
740 | union perf_event *event) | |
741 | { | |
742 | const u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
743 | ||
744 | if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) | |
745 | return perf_session__find_machine(session, event->ip.pid); | |
746 | ||
747 | return perf_session__find_host_machine(session); | |
748 | } | |
749 | ||
cbf41645 | 750 | static int perf_session_deliver_event(struct perf_session *session, |
8115d60c | 751 | union perf_event *event, |
8d50e5b4 | 752 | struct perf_sample *sample, |
45694aa7 | 753 | struct perf_tool *tool, |
532e7269 | 754 | u64 file_offset) |
cbf41645 | 755 | { |
9e69c210 | 756 | struct perf_evsel *evsel; |
743eb868 | 757 | struct machine *machine; |
9e69c210 | 758 | |
532e7269 TG |
759 | dump_event(session, event, file_offset, sample); |
760 | ||
7b27509f ACM |
761 | evsel = perf_evlist__id2evsel(session->evlist, sample->id); |
762 | if (evsel != NULL && event->header.type != PERF_RECORD_SAMPLE) { | |
763 | /* | |
764 | * XXX We're leaving PERF_RECORD_SAMPLE unnacounted here | |
765 | * because the tools right now may apply filters, discarding | |
766 | * some of the samples. For consistency, in the future we | |
767 | * should have something like nr_filtered_samples and remove | |
768 | * the sample->period from total_sample_period, etc, KISS for | |
769 | * now tho. | |
770 | * | |
771 | * Also testing against NULL allows us to handle files without | |
772 | * attr.sample_id_all and/or without PERF_SAMPLE_ID. In the | |
773 | * future probably it'll be a good idea to restrict event | |
774 | * processing via perf_session to files with both set. | |
775 | */ | |
776 | hists__inc_nr_events(&evsel->hists, event->header.type); | |
777 | } | |
778 | ||
743eb868 ACM |
779 | machine = perf_session__find_machine_for_cpumode(session, event); |
780 | ||
cbf41645 TG |
781 | switch (event->header.type) { |
782 | case PERF_RECORD_SAMPLE: | |
532e7269 | 783 | dump_sample(session, event, sample); |
9e69c210 ACM |
784 | if (evsel == NULL) { |
785 | ++session->hists.stats.nr_unknown_id; | |
786 | return -1; | |
787 | } | |
45694aa7 | 788 | return tool->sample(tool, event, sample, evsel, machine); |
cbf41645 | 789 | case PERF_RECORD_MMAP: |
45694aa7 | 790 | return tool->mmap(tool, event, sample, machine); |
cbf41645 | 791 | case PERF_RECORD_COMM: |
45694aa7 | 792 | return tool->comm(tool, event, sample, machine); |
cbf41645 | 793 | case PERF_RECORD_FORK: |
45694aa7 | 794 | return tool->fork(tool, event, sample, machine); |
cbf41645 | 795 | case PERF_RECORD_EXIT: |
45694aa7 | 796 | return tool->exit(tool, event, sample, machine); |
cbf41645 | 797 | case PERF_RECORD_LOST: |
45694aa7 | 798 | if (tool->lost == perf_event__process_lost) |
743eb868 | 799 | session->hists.stats.total_lost += event->lost.lost; |
45694aa7 | 800 | return tool->lost(tool, event, sample, machine); |
cbf41645 | 801 | case PERF_RECORD_READ: |
45694aa7 | 802 | return tool->read(tool, event, sample, evsel, machine); |
cbf41645 | 803 | case PERF_RECORD_THROTTLE: |
45694aa7 | 804 | return tool->throttle(tool, event, sample, machine); |
cbf41645 | 805 | case PERF_RECORD_UNTHROTTLE: |
45694aa7 | 806 | return tool->unthrottle(tool, event, sample, machine); |
cbf41645 TG |
807 | default: |
808 | ++session->hists.stats.nr_unknown_events; | |
809 | return -1; | |
810 | } | |
811 | } | |
812 | ||
3dfc2c0a | 813 | static int perf_session__preprocess_sample(struct perf_session *session, |
8115d60c | 814 | union perf_event *event, struct perf_sample *sample) |
3dfc2c0a TG |
815 | { |
816 | if (event->header.type != PERF_RECORD_SAMPLE || | |
817 | !(session->sample_type & PERF_SAMPLE_CALLCHAIN)) | |
818 | return 0; | |
819 | ||
820 | if (!ip_callchain__valid(sample->callchain, event)) { | |
821 | pr_debug("call-chain problem with event, skipping it.\n"); | |
822 | ++session->hists.stats.nr_invalid_chains; | |
823 | session->hists.stats.total_invalid_chains += sample->period; | |
824 | return -EINVAL; | |
825 | } | |
826 | return 0; | |
827 | } | |
828 | ||
8115d60c | 829 | static int perf_session__process_user_event(struct perf_session *session, union perf_event *event, |
45694aa7 | 830 | struct perf_tool *tool, u64 file_offset) |
06aae590 | 831 | { |
10d0f086 ACM |
832 | int err; |
833 | ||
ba74f064 | 834 | dump_event(session, event, file_offset, NULL); |
06aae590 | 835 | |
cbf41645 | 836 | /* These events are processed right away */ |
06aae590 | 837 | switch (event->header.type) { |
2c46dbb5 | 838 | case PERF_RECORD_HEADER_ATTR: |
45694aa7 | 839 | err = tool->attr(event, &session->evlist); |
10d0f086 ACM |
840 | if (err == 0) |
841 | perf_session__update_sample_type(session); | |
842 | return err; | |
cd19a035 | 843 | case PERF_RECORD_HEADER_EVENT_TYPE: |
45694aa7 | 844 | return tool->event_type(tool, event); |
9215545e TZ |
845 | case PERF_RECORD_HEADER_TRACING_DATA: |
846 | /* setup for reading amidst mmap */ | |
cbf41645 | 847 | lseek(session->fd, file_offset, SEEK_SET); |
45694aa7 | 848 | return tool->tracing_data(event, session); |
c7929e47 | 849 | case PERF_RECORD_HEADER_BUILD_ID: |
45694aa7 | 850 | return tool->build_id(tool, event, session); |
d6b17beb | 851 | case PERF_RECORD_FINISHED_ROUND: |
45694aa7 | 852 | return tool->finished_round(tool, event, session); |
06aae590 | 853 | default: |
ba74f064 | 854 | return -EINVAL; |
06aae590 | 855 | } |
ba74f064 TG |
856 | } |
857 | ||
858 | static int perf_session__process_event(struct perf_session *session, | |
8115d60c | 859 | union perf_event *event, |
45694aa7 | 860 | struct perf_tool *tool, |
ba74f064 TG |
861 | u64 file_offset) |
862 | { | |
8d50e5b4 | 863 | struct perf_sample sample; |
ba74f064 TG |
864 | int ret; |
865 | ||
8115d60c ACM |
866 | if (session->header.needs_swap && |
867 | perf_event__swap_ops[event->header.type]) | |
868 | perf_event__swap_ops[event->header.type](event); | |
ba74f064 TG |
869 | |
870 | if (event->header.type >= PERF_RECORD_HEADER_MAX) | |
871 | return -EINVAL; | |
872 | ||
873 | hists__inc_nr_events(&session->hists, event->header.type); | |
874 | ||
875 | if (event->header.type >= PERF_RECORD_USER_TYPE_START) | |
45694aa7 | 876 | return perf_session__process_user_event(session, event, tool, file_offset); |
cbf41645 | 877 | |
3dfc2c0a TG |
878 | /* |
879 | * For all kernel events we get the sample data | |
880 | */ | |
5538beca FW |
881 | ret = perf_session__parse_sample(session, event, &sample); |
882 | if (ret) | |
883 | return ret; | |
3dfc2c0a TG |
884 | |
885 | /* Preprocess sample records - precheck callchains */ | |
886 | if (perf_session__preprocess_sample(session, event, &sample)) | |
887 | return 0; | |
888 | ||
45694aa7 | 889 | if (tool->ordered_samples) { |
e4c2df13 TG |
890 | ret = perf_session_queue_event(session, event, &sample, |
891 | file_offset); | |
cbf41645 TG |
892 | if (ret != -ETIME) |
893 | return ret; | |
894 | } | |
895 | ||
45694aa7 | 896 | return perf_session_deliver_event(session, event, &sample, tool, |
f74725dc | 897 | file_offset); |
06aae590 ACM |
898 | } |
899 | ||
ba21594c ACM |
900 | void perf_event_header__bswap(struct perf_event_header *self) |
901 | { | |
902 | self->type = bswap_32(self->type); | |
903 | self->misc = bswap_16(self->misc); | |
904 | self->size = bswap_16(self->size); | |
905 | } | |
906 | ||
b424eba2 ACM |
907 | struct thread *perf_session__findnew(struct perf_session *session, pid_t pid) |
908 | { | |
909 | return machine__findnew_thread(&session->host_machine, pid); | |
910 | } | |
911 | ||
06aae590 ACM |
912 | static struct thread *perf_session__register_idle_thread(struct perf_session *self) |
913 | { | |
914 | struct thread *thread = perf_session__findnew(self, 0); | |
915 | ||
916 | if (thread == NULL || thread__set_comm(thread, "swapper")) { | |
917 | pr_err("problem inserting idle task.\n"); | |
918 | thread = NULL; | |
919 | } | |
920 | ||
921 | return thread; | |
922 | } | |
923 | ||
11095994 | 924 | static void perf_session__warn_about_errors(const struct perf_session *session, |
45694aa7 | 925 | const struct perf_tool *tool) |
11095994 | 926 | { |
45694aa7 | 927 | if (tool->lost == perf_event__process_lost && |
7b27509f ACM |
928 | session->hists.stats.nr_events[PERF_RECORD_LOST] != 0) { |
929 | ui__warning("Processed %d events and lost %d chunks!\n\n" | |
930 | "Check IO/CPU overload!\n\n", | |
931 | session->hists.stats.nr_events[0], | |
932 | session->hists.stats.nr_events[PERF_RECORD_LOST]); | |
11095994 ACM |
933 | } |
934 | ||
935 | if (session->hists.stats.nr_unknown_events != 0) { | |
936 | ui__warning("Found %u unknown events!\n\n" | |
937 | "Is this an older tool processing a perf.data " | |
938 | "file generated by a more recent tool?\n\n" | |
939 | "If that is not the case, consider " | |
940 | "reporting to linux-kernel@vger.kernel.org.\n\n", | |
941 | session->hists.stats.nr_unknown_events); | |
942 | } | |
943 | ||
9e69c210 ACM |
944 | if (session->hists.stats.nr_unknown_id != 0) { |
945 | ui__warning("%u samples with id not present in the header\n", | |
946 | session->hists.stats.nr_unknown_id); | |
947 | } | |
948 | ||
11095994 ACM |
949 | if (session->hists.stats.nr_invalid_chains != 0) { |
950 | ui__warning("Found invalid callchains!\n\n" | |
951 | "%u out of %u events were discarded for this reason.\n\n" | |
952 | "Consider reporting to linux-kernel@vger.kernel.org.\n\n", | |
953 | session->hists.stats.nr_invalid_chains, | |
954 | session->hists.stats.nr_events[PERF_RECORD_SAMPLE]); | |
955 | } | |
956 | } | |
957 | ||
8dc58101 TZ |
958 | #define session_done() (*(volatile int *)(&session_done)) |
959 | volatile int session_done; | |
960 | ||
961 | static int __perf_session__process_pipe_events(struct perf_session *self, | |
45694aa7 | 962 | struct perf_tool *tool) |
8dc58101 | 963 | { |
8115d60c | 964 | union perf_event event; |
8dc58101 TZ |
965 | uint32_t size; |
966 | int skip = 0; | |
967 | u64 head; | |
968 | int err; | |
969 | void *p; | |
970 | ||
45694aa7 | 971 | perf_tool__fill_defaults(tool); |
8dc58101 TZ |
972 | |
973 | head = 0; | |
974 | more: | |
1e7972cc | 975 | err = readn(self->fd, &event, sizeof(struct perf_event_header)); |
8dc58101 TZ |
976 | if (err <= 0) { |
977 | if (err == 0) | |
978 | goto done; | |
979 | ||
980 | pr_err("failed to read event header\n"); | |
981 | goto out_err; | |
982 | } | |
983 | ||
984 | if (self->header.needs_swap) | |
985 | perf_event_header__bswap(&event.header); | |
986 | ||
987 | size = event.header.size; | |
988 | if (size == 0) | |
989 | size = 8; | |
990 | ||
991 | p = &event; | |
992 | p += sizeof(struct perf_event_header); | |
993 | ||
794e43b5 | 994 | if (size - sizeof(struct perf_event_header)) { |
1e7972cc | 995 | err = readn(self->fd, p, size - sizeof(struct perf_event_header)); |
794e43b5 TZ |
996 | if (err <= 0) { |
997 | if (err == 0) { | |
998 | pr_err("unexpected end of event stream\n"); | |
999 | goto done; | |
1000 | } | |
8dc58101 | 1001 | |
794e43b5 TZ |
1002 | pr_err("failed to read event data\n"); |
1003 | goto out_err; | |
1004 | } | |
8dc58101 TZ |
1005 | } |
1006 | ||
1007 | if (size == 0 || | |
45694aa7 | 1008 | (skip = perf_session__process_event(self, &event, tool, head)) < 0) { |
9486aa38 | 1009 | dump_printf("%#" PRIx64 " [%#x]: skipping unknown header type: %d\n", |
8dc58101 TZ |
1010 | head, event.header.size, event.header.type); |
1011 | /* | |
1012 | * assume we lost track of the stream, check alignment, and | |
1013 | * increment a single u64 in the hope to catch on again 'soon'. | |
1014 | */ | |
1015 | if (unlikely(head & 7)) | |
1016 | head &= ~7ULL; | |
1017 | ||
1018 | size = 8; | |
1019 | } | |
1020 | ||
1021 | head += size; | |
1022 | ||
8dc58101 TZ |
1023 | if (skip > 0) |
1024 | head += skip; | |
1025 | ||
1026 | if (!session_done()) | |
1027 | goto more; | |
1028 | done: | |
1029 | err = 0; | |
1030 | out_err: | |
45694aa7 | 1031 | perf_session__warn_about_errors(self, tool); |
020bb75a | 1032 | perf_session_free_sample_buffers(self); |
8dc58101 TZ |
1033 | return err; |
1034 | } | |
1035 | ||
998bedc8 FW |
1036 | static union perf_event * |
1037 | fetch_mmaped_event(struct perf_session *session, | |
1038 | u64 head, size_t mmap_size, char *buf) | |
1039 | { | |
1040 | union perf_event *event; | |
1041 | ||
1042 | /* | |
1043 | * Ensure we have enough space remaining to read | |
1044 | * the size of the event in the headers. | |
1045 | */ | |
1046 | if (head + sizeof(event->header) > mmap_size) | |
1047 | return NULL; | |
1048 | ||
1049 | event = (union perf_event *)(buf + head); | |
1050 | ||
1051 | if (session->header.needs_swap) | |
1052 | perf_event_header__bswap(&event->header); | |
1053 | ||
1054 | if (head + event->header.size > mmap_size) | |
1055 | return NULL; | |
1056 | ||
1057 | return event; | |
1058 | } | |
1059 | ||
0331ee0c | 1060 | int __perf_session__process_events(struct perf_session *session, |
6122e4e4 | 1061 | u64 data_offset, u64 data_size, |
45694aa7 | 1062 | u64 file_size, struct perf_tool *tool) |
06aae590 | 1063 | { |
55b44629 | 1064 | u64 head, page_offset, file_offset, file_pos, progress_next; |
fe174207 | 1065 | int err, mmap_prot, mmap_flags, map_idx = 0; |
55b44629 | 1066 | size_t page_size, mmap_size; |
fe174207 | 1067 | char *buf, *mmaps[8]; |
8115d60c | 1068 | union perf_event *event; |
06aae590 | 1069 | uint32_t size; |
0331ee0c | 1070 | |
45694aa7 | 1071 | perf_tool__fill_defaults(tool); |
06aae590 | 1072 | |
1b75962e | 1073 | page_size = sysconf(_SC_PAGESIZE); |
06aae590 | 1074 | |
0331ee0c TG |
1075 | page_offset = page_size * (data_offset / page_size); |
1076 | file_offset = page_offset; | |
1077 | head = data_offset - page_offset; | |
06aae590 | 1078 | |
d6513281 TG |
1079 | if (data_offset + data_size < file_size) |
1080 | file_size = data_offset + data_size; | |
1081 | ||
55b44629 | 1082 | progress_next = file_size / 16; |
55b44629 TG |
1083 | |
1084 | mmap_size = session->mmap_window; | |
1085 | if (mmap_size > file_size) | |
1086 | mmap_size = file_size; | |
1087 | ||
fe174207 TG |
1088 | memset(mmaps, 0, sizeof(mmaps)); |
1089 | ||
ba21594c ACM |
1090 | mmap_prot = PROT_READ; |
1091 | mmap_flags = MAP_SHARED; | |
1092 | ||
0331ee0c | 1093 | if (session->header.needs_swap) { |
ba21594c ACM |
1094 | mmap_prot |= PROT_WRITE; |
1095 | mmap_flags = MAP_PRIVATE; | |
1096 | } | |
06aae590 | 1097 | remap: |
55b44629 TG |
1098 | buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, session->fd, |
1099 | file_offset); | |
06aae590 ACM |
1100 | if (buf == MAP_FAILED) { |
1101 | pr_err("failed to mmap file\n"); | |
1102 | err = -errno; | |
1103 | goto out_err; | |
1104 | } | |
fe174207 TG |
1105 | mmaps[map_idx] = buf; |
1106 | map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1); | |
d6513281 | 1107 | file_pos = file_offset + head; |
06aae590 ACM |
1108 | |
1109 | more: | |
998bedc8 FW |
1110 | event = fetch_mmaped_event(session, head, mmap_size, buf); |
1111 | if (!event) { | |
fe174207 TG |
1112 | if (mmaps[map_idx]) { |
1113 | munmap(mmaps[map_idx], mmap_size); | |
1114 | mmaps[map_idx] = NULL; | |
1115 | } | |
06aae590 | 1116 | |
0331ee0c TG |
1117 | page_offset = page_size * (head / page_size); |
1118 | file_offset += page_offset; | |
1119 | head -= page_offset; | |
06aae590 ACM |
1120 | goto remap; |
1121 | } | |
1122 | ||
1123 | size = event->header.size; | |
1124 | ||
d6513281 | 1125 | if (size == 0 || |
45694aa7 | 1126 | perf_session__process_event(session, event, tool, file_pos) < 0) { |
9486aa38 | 1127 | dump_printf("%#" PRIx64 " [%#x]: skipping unknown header type: %d\n", |
0331ee0c | 1128 | file_offset + head, event->header.size, |
06aae590 ACM |
1129 | event->header.type); |
1130 | /* | |
1131 | * assume we lost track of the stream, check alignment, and | |
1132 | * increment a single u64 in the hope to catch on again 'soon'. | |
1133 | */ | |
1134 | if (unlikely(head & 7)) | |
1135 | head &= ~7ULL; | |
1136 | ||
1137 | size = 8; | |
1138 | } | |
1139 | ||
1140 | head += size; | |
d6513281 | 1141 | file_pos += size; |
06aae590 | 1142 | |
55b44629 TG |
1143 | if (file_pos >= progress_next) { |
1144 | progress_next += file_size / 16; | |
ca59bcbc ACM |
1145 | ui_progress__update(file_pos, file_size, |
1146 | "Processing events..."); | |
55b44629 TG |
1147 | } |
1148 | ||
d6513281 | 1149 | if (file_pos < file_size) |
06aae590 | 1150 | goto more; |
d6513281 | 1151 | |
06aae590 | 1152 | err = 0; |
c61e52ee | 1153 | /* do the final flush for ordered samples */ |
0331ee0c | 1154 | session->ordered_samples.next_flush = ULLONG_MAX; |
45694aa7 | 1155 | flush_sample_queue(session, tool); |
06aae590 | 1156 | out_err: |
45694aa7 | 1157 | perf_session__warn_about_errors(session, tool); |
020bb75a | 1158 | perf_session_free_sample_buffers(session); |
06aae590 ACM |
1159 | return err; |
1160 | } | |
27295592 | 1161 | |
6122e4e4 | 1162 | int perf_session__process_events(struct perf_session *self, |
45694aa7 | 1163 | struct perf_tool *tool) |
6122e4e4 ACM |
1164 | { |
1165 | int err; | |
1166 | ||
1167 | if (perf_session__register_idle_thread(self) == NULL) | |
1168 | return -ENOMEM; | |
1169 | ||
8dc58101 TZ |
1170 | if (!self->fd_pipe) |
1171 | err = __perf_session__process_events(self, | |
1172 | self->header.data_offset, | |
1173 | self->header.data_size, | |
45694aa7 | 1174 | self->size, tool); |
8dc58101 | 1175 | else |
45694aa7 | 1176 | err = __perf_session__process_pipe_events(self, tool); |
88ca895d | 1177 | |
6122e4e4 ACM |
1178 | return err; |
1179 | } | |
1180 | ||
d549c769 | 1181 | bool perf_session__has_traces(struct perf_session *self, const char *msg) |
27295592 ACM |
1182 | { |
1183 | if (!(self->sample_type & PERF_SAMPLE_RAW)) { | |
d549c769 ACM |
1184 | pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg); |
1185 | return false; | |
27295592 ACM |
1186 | } |
1187 | ||
d549c769 | 1188 | return true; |
27295592 | 1189 | } |
56b03f3c | 1190 | |
743eb868 ACM |
1191 | int maps__set_kallsyms_ref_reloc_sym(struct map **maps, |
1192 | const char *symbol_name, u64 addr) | |
56b03f3c ACM |
1193 | { |
1194 | char *bracket; | |
9de89fe7 | 1195 | enum map_type i; |
a1645ce1 ZY |
1196 | struct ref_reloc_sym *ref; |
1197 | ||
1198 | ref = zalloc(sizeof(struct ref_reloc_sym)); | |
1199 | if (ref == NULL) | |
1200 | return -ENOMEM; | |
56b03f3c | 1201 | |
a1645ce1 ZY |
1202 | ref->name = strdup(symbol_name); |
1203 | if (ref->name == NULL) { | |
1204 | free(ref); | |
56b03f3c | 1205 | return -ENOMEM; |
a1645ce1 | 1206 | } |
56b03f3c | 1207 | |
a1645ce1 | 1208 | bracket = strchr(ref->name, ']'); |
56b03f3c ACM |
1209 | if (bracket) |
1210 | *bracket = '\0'; | |
1211 | ||
a1645ce1 | 1212 | ref->addr = addr; |
9de89fe7 ACM |
1213 | |
1214 | for (i = 0; i < MAP__NR_TYPES; ++i) { | |
a1645ce1 ZY |
1215 | struct kmap *kmap = map__kmap(maps[i]); |
1216 | kmap->ref_reloc_sym = ref; | |
9de89fe7 ACM |
1217 | } |
1218 | ||
56b03f3c ACM |
1219 | return 0; |
1220 | } | |
1f626bc3 ACM |
1221 | |
1222 | size_t perf_session__fprintf_dsos(struct perf_session *self, FILE *fp) | |
1223 | { | |
1224 | return __dsos__fprintf(&self->host_machine.kernel_dsos, fp) + | |
1225 | __dsos__fprintf(&self->host_machine.user_dsos, fp) + | |
1226 | machines__fprintf_dsos(&self->machines, fp); | |
1227 | } | |
f869097e ACM |
1228 | |
1229 | size_t perf_session__fprintf_dsos_buildid(struct perf_session *self, FILE *fp, | |
1230 | bool with_hits) | |
1231 | { | |
1232 | size_t ret = machine__fprintf_dsos_buildid(&self->host_machine, fp, with_hits); | |
1233 | return ret + machines__fprintf_dsos_buildid(&self->machines, fp, with_hits); | |
1234 | } | |
e248de33 ACM |
1235 | |
1236 | size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp) | |
1237 | { | |
1238 | struct perf_evsel *pos; | |
1239 | size_t ret = fprintf(fp, "Aggregated stats:\n"); | |
1240 | ||
1241 | ret += hists__fprintf_nr_events(&session->hists, fp); | |
1242 | ||
1243 | list_for_each_entry(pos, &session->evlist->entries, node) { | |
1244 | ret += fprintf(fp, "%s stats:\n", event_name(pos)); | |
1245 | ret += hists__fprintf_nr_events(&pos->hists, fp); | |
1246 | } | |
1247 | ||
1248 | return ret; | |
1249 | } | |
c0230b2b | 1250 | |
b424eba2 ACM |
1251 | size_t perf_session__fprintf(struct perf_session *session, FILE *fp) |
1252 | { | |
1253 | /* | |
1254 | * FIXME: Here we have to actually print all the machines in this | |
1255 | * session, not just the host... | |
1256 | */ | |
1257 | return machine__fprintf(&session->host_machine, fp); | |
1258 | } | |
1259 | ||
1260 | void perf_session__remove_thread(struct perf_session *session, | |
1261 | struct thread *th) | |
1262 | { | |
1263 | /* | |
1264 | * FIXME: This one makes no sense, we need to remove the thread from | |
1265 | * the machine it belongs to, perf_session can have many machines, so | |
1266 | * doing it always on ->host_machine is wrong. Fix when auditing all | |
1267 | * the 'perf kvm' code. | |
1268 | */ | |
1269 | machine__remove_thread(&session->host_machine, th); | |
1270 | } | |
1271 | ||
9cbdb702 DA |
1272 | struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session, |
1273 | unsigned int type) | |
1274 | { | |
1275 | struct perf_evsel *pos; | |
1276 | ||
1277 | list_for_each_entry(pos, &session->evlist->entries, node) { | |
1278 | if (pos->attr.type == type) | |
1279 | return pos; | |
1280 | } | |
1281 | return NULL; | |
1282 | } | |
1283 | ||
743eb868 ACM |
1284 | void perf_event__print_ip(union perf_event *event, struct perf_sample *sample, |
1285 | struct machine *machine, struct perf_evsel *evsel, | |
1286 | int print_sym, int print_dso) | |
c0230b2b DA |
1287 | { |
1288 | struct addr_location al; | |
1289 | const char *symname, *dsoname; | |
246d4ce8 | 1290 | struct callchain_cursor *cursor = &evsel->hists.callchain_cursor; |
c0230b2b DA |
1291 | struct callchain_cursor_node *node; |
1292 | ||
743eb868 | 1293 | if (perf_event__preprocess_sample(event, machine, &al, sample, |
c0230b2b DA |
1294 | NULL) < 0) { |
1295 | error("problem processing %d event, skipping it.\n", | |
1296 | event->header.type); | |
1297 | return; | |
1298 | } | |
1299 | ||
1300 | if (symbol_conf.use_callchain && sample->callchain) { | |
1301 | ||
743eb868 | 1302 | if (machine__resolve_callchain(machine, evsel, al.thread, |
c0230b2b DA |
1303 | sample->callchain, NULL) != 0) { |
1304 | if (verbose) | |
1305 | error("Failed to resolve callchain. Skipping\n"); | |
1306 | return; | |
1307 | } | |
1308 | callchain_cursor_commit(cursor); | |
1309 | ||
1310 | while (1) { | |
1311 | node = callchain_cursor_current(cursor); | |
1312 | if (!node) | |
1313 | break; | |
1314 | ||
787bef17 DA |
1315 | printf("\t%16" PRIx64, node->ip); |
1316 | if (print_sym) { | |
1317 | if (node->sym && node->sym->name) | |
1318 | symname = node->sym->name; | |
1319 | else | |
1320 | symname = ""; | |
c0230b2b | 1321 | |
610723f2 DA |
1322 | printf(" %s", symname); |
1323 | } | |
1324 | if (print_dso) { | |
787bef17 DA |
1325 | if (node->map && node->map->dso && node->map->dso->name) |
1326 | dsoname = node->map->dso->name; | |
1327 | else | |
1328 | dsoname = ""; | |
c0230b2b | 1329 | |
610723f2 | 1330 | printf(" (%s)", dsoname); |
787bef17 DA |
1331 | } |
1332 | printf("\n"); | |
c0230b2b DA |
1333 | |
1334 | callchain_cursor_advance(cursor); | |
1335 | } | |
1336 | ||
1337 | } else { | |
adc4bf99 | 1338 | printf("%16" PRIx64, sample->ip); |
787bef17 DA |
1339 | if (print_sym) { |
1340 | if (al.sym && al.sym->name) | |
1341 | symname = al.sym->name; | |
1342 | else | |
1343 | symname = ""; | |
c0230b2b | 1344 | |
610723f2 DA |
1345 | printf(" %s", symname); |
1346 | } | |
1347 | ||
1348 | if (print_dso) { | |
787bef17 DA |
1349 | if (al.map && al.map->dso && al.map->dso->name) |
1350 | dsoname = al.map->dso->name; | |
1351 | else | |
1352 | dsoname = ""; | |
c0230b2b | 1353 | |
610723f2 | 1354 | printf(" (%s)", dsoname); |
787bef17 | 1355 | } |
c0230b2b DA |
1356 | } |
1357 | } | |
5d67be97 AB |
1358 | |
1359 | int perf_session__cpu_bitmap(struct perf_session *session, | |
1360 | const char *cpu_list, unsigned long *cpu_bitmap) | |
1361 | { | |
1362 | int i; | |
1363 | struct cpu_map *map; | |
1364 | ||
1365 | for (i = 0; i < PERF_TYPE_MAX; ++i) { | |
1366 | struct perf_evsel *evsel; | |
1367 | ||
1368 | evsel = perf_session__find_first_evtype(session, i); | |
1369 | if (!evsel) | |
1370 | continue; | |
1371 | ||
1372 | if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) { | |
1373 | pr_err("File does not contain CPU events. " | |
1374 | "Remove -c option to proceed.\n"); | |
1375 | return -1; | |
1376 | } | |
1377 | } | |
1378 | ||
1379 | map = cpu_map__new(cpu_list); | |
47fbe53b DA |
1380 | if (map == NULL) { |
1381 | pr_err("Invalid cpu_list\n"); | |
1382 | return -1; | |
1383 | } | |
5d67be97 AB |
1384 | |
1385 | for (i = 0; i < map->nr; i++) { | |
1386 | int cpu = map->map[i]; | |
1387 | ||
1388 | if (cpu >= MAX_NR_CPUS) { | |
1389 | pr_err("Requested CPU %d too large. " | |
1390 | "Consider raising MAX_NR_CPUS\n", cpu); | |
1391 | return -1; | |
1392 | } | |
1393 | ||
1394 | set_bit(cpu, cpu_bitmap); | |
1395 | } | |
1396 | ||
1397 | return 0; | |
1398 | } | |
fbe96f29 SE |
1399 | |
1400 | void perf_session__fprintf_info(struct perf_session *session, FILE *fp, | |
1401 | bool full) | |
1402 | { | |
1403 | struct stat st; | |
1404 | int ret; | |
1405 | ||
1406 | if (session == NULL || fp == NULL) | |
1407 | return; | |
1408 | ||
1409 | ret = fstat(session->fd, &st); | |
1410 | if (ret == -1) | |
1411 | return; | |
1412 | ||
1413 | fprintf(fp, "# ========\n"); | |
1414 | fprintf(fp, "# captured on: %s", ctime(&st.st_ctime)); | |
1415 | perf_header__fprintf_info(session, fp, full); | |
1416 | fprintf(fp, "# ========\n#\n"); | |
1417 | } |