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) |
69996df4 | 27 | pr_err("incompatible file format (rerun with -v to learn more)"); |
8dc58101 TZ |
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) { |
69996df4 | 59 | pr_err("incompatible file format (rerun with -v to learn more)"); |
94c744b6 ACM |
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 | { |
efad1415 RR |
110 | struct perf_session *self; |
111 | struct stat st; | |
112 | size_t len; | |
113 | ||
114 | if (!filename || !strlen(filename)) { | |
115 | if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode)) | |
116 | filename = "-"; | |
117 | else | |
118 | filename = "perf.data"; | |
119 | } | |
120 | ||
121 | len = strlen(filename); | |
122 | self = zalloc(sizeof(*self) + len); | |
94c744b6 ACM |
123 | |
124 | if (self == NULL) | |
125 | goto out; | |
126 | ||
94c744b6 | 127 | memcpy(self->filename, filename, len); |
55b44629 TG |
128 | /* |
129 | * On 64bit we can mmap the data file in one go. No need for tiny mmap | |
130 | * slices. On 32bit we use 32MB. | |
131 | */ | |
132 | #if BITS_PER_LONG == 64 | |
133 | self->mmap_window = ULLONG_MAX; | |
134 | #else | |
135 | self->mmap_window = 32 * 1024 * 1024ULL; | |
136 | #endif | |
23346f21 | 137 | self->machines = RB_ROOT; |
454c407e | 138 | self->repipe = repipe; |
a1225dec | 139 | INIT_LIST_HEAD(&self->ordered_samples.samples); |
020bb75a | 140 | INIT_LIST_HEAD(&self->ordered_samples.sample_cache); |
5c891f38 | 141 | INIT_LIST_HEAD(&self->ordered_samples.to_free); |
1f626bc3 | 142 | machine__init(&self->host_machine, "", HOST_KERNEL_ID); |
4bf9ce1b | 143 | hists__init(&self->hists); |
94c744b6 | 144 | |
64abebf7 ACM |
145 | if (mode == O_RDONLY) { |
146 | if (perf_session__open(self, force) < 0) | |
147 | goto out_delete; | |
a91e5431 | 148 | perf_session__update_sample_type(self); |
64abebf7 ACM |
149 | } else if (mode == O_WRONLY) { |
150 | /* | |
151 | * In O_RDONLY mode this will be performed when reading the | |
8115d60c | 152 | * kernel MMAP event, in perf_event__process_mmap(). |
64abebf7 ACM |
153 | */ |
154 | if (perf_session__create_kernel_maps(self) < 0) | |
155 | goto out_delete; | |
156 | } | |
d549c769 | 157 | |
45694aa7 ACM |
158 | if (tool && tool->ordering_requires_timestamps && |
159 | tool->ordered_samples && !self->sample_id_all) { | |
21ef97f0 | 160 | dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n"); |
45694aa7 | 161 | tool->ordered_samples = false; |
21ef97f0 IM |
162 | } |
163 | ||
94c744b6 ACM |
164 | out: |
165 | return self; | |
4aa65636 ACM |
166 | out_delete: |
167 | perf_session__delete(self); | |
168 | return NULL; | |
94c744b6 ACM |
169 | } |
170 | ||
b424eba2 | 171 | static void machine__delete_dead_threads(struct machine *machine) |
d65a458b ACM |
172 | { |
173 | struct thread *n, *t; | |
174 | ||
b424eba2 | 175 | list_for_each_entry_safe(t, n, &machine->dead_threads, node) { |
d65a458b ACM |
176 | list_del(&t->node); |
177 | thread__delete(t); | |
178 | } | |
179 | } | |
180 | ||
b424eba2 ACM |
181 | static void perf_session__delete_dead_threads(struct perf_session *session) |
182 | { | |
183 | machine__delete_dead_threads(&session->host_machine); | |
184 | } | |
185 | ||
186 | static void machine__delete_threads(struct machine *self) | |
d65a458b ACM |
187 | { |
188 | struct rb_node *nd = rb_first(&self->threads); | |
189 | ||
190 | while (nd) { | |
191 | struct thread *t = rb_entry(nd, struct thread, rb_node); | |
192 | ||
193 | rb_erase(&t->rb_node, &self->threads); | |
194 | nd = rb_next(nd); | |
195 | thread__delete(t); | |
196 | } | |
197 | } | |
198 | ||
b424eba2 ACM |
199 | static void perf_session__delete_threads(struct perf_session *session) |
200 | { | |
201 | machine__delete_threads(&session->host_machine); | |
202 | } | |
203 | ||
94c744b6 ACM |
204 | void perf_session__delete(struct perf_session *self) |
205 | { | |
076c6e45 | 206 | perf_session__destroy_kernel_maps(self); |
d65a458b ACM |
207 | perf_session__delete_dead_threads(self); |
208 | perf_session__delete_threads(self); | |
209 | machine__exit(&self->host_machine); | |
94c744b6 ACM |
210 | close(self->fd); |
211 | free(self); | |
212 | } | |
a328626b | 213 | |
b424eba2 | 214 | void machine__remove_thread(struct machine *self, struct thread *th) |
720a3aeb | 215 | { |
70597f21 | 216 | self->last_match = NULL; |
720a3aeb ACM |
217 | rb_erase(&th->rb_node, &self->threads); |
218 | /* | |
219 | * We may have references to this thread, for instance in some hist_entry | |
220 | * instances, so just move them to a separate list. | |
221 | */ | |
222 | list_add_tail(&th->node, &self->dead_threads); | |
223 | } | |
224 | ||
a328626b ACM |
225 | static bool symbol__match_parent_regex(struct symbol *sym) |
226 | { | |
227 | if (sym->name && !regexec(&parent_regex, sym->name, 0, NULL, 0)) | |
228 | return 1; | |
229 | ||
230 | return 0; | |
231 | } | |
232 | ||
b5387528 RAV |
233 | static const u8 cpumodes[] = { |
234 | PERF_RECORD_MISC_USER, | |
235 | PERF_RECORD_MISC_KERNEL, | |
236 | PERF_RECORD_MISC_GUEST_USER, | |
237 | PERF_RECORD_MISC_GUEST_KERNEL | |
238 | }; | |
239 | #define NCPUMODES (sizeof(cpumodes)/sizeof(u8)) | |
240 | ||
241 | static void ip__resolve_ams(struct machine *self, struct thread *thread, | |
242 | struct addr_map_symbol *ams, | |
243 | u64 ip) | |
244 | { | |
245 | struct addr_location al; | |
246 | size_t i; | |
247 | u8 m; | |
248 | ||
249 | memset(&al, 0, sizeof(al)); | |
250 | ||
251 | for (i = 0; i < NCPUMODES; i++) { | |
252 | m = cpumodes[i]; | |
253 | /* | |
254 | * We cannot use the header.misc hint to determine whether a | |
255 | * branch stack address is user, kernel, guest, hypervisor. | |
256 | * Branches may straddle the kernel/user/hypervisor boundaries. | |
257 | * Thus, we have to try consecutively until we find a match | |
258 | * or else, the symbol is unknown | |
259 | */ | |
260 | thread__find_addr_location(thread, self, m, MAP__FUNCTION, | |
261 | ip, &al, NULL); | |
262 | if (al.sym) | |
263 | goto found; | |
264 | } | |
265 | found: | |
266 | ams->addr = ip; | |
a68c2c58 | 267 | ams->al_addr = al.addr; |
b5387528 RAV |
268 | ams->sym = al.sym; |
269 | ams->map = al.map; | |
270 | } | |
271 | ||
272 | struct branch_info *machine__resolve_bstack(struct machine *self, | |
273 | struct thread *thr, | |
274 | struct branch_stack *bs) | |
275 | { | |
276 | struct branch_info *bi; | |
277 | unsigned int i; | |
278 | ||
279 | bi = calloc(bs->nr, sizeof(struct branch_info)); | |
280 | if (!bi) | |
281 | return NULL; | |
282 | ||
283 | for (i = 0; i < bs->nr; i++) { | |
284 | ip__resolve_ams(self, thr, &bi[i].to, bs->entries[i].to); | |
285 | ip__resolve_ams(self, thr, &bi[i].from, bs->entries[i].from); | |
286 | bi[i].flags = bs->entries[i].flags; | |
287 | } | |
288 | return bi; | |
289 | } | |
290 | ||
743eb868 ACM |
291 | int machine__resolve_callchain(struct machine *self, struct perf_evsel *evsel, |
292 | struct thread *thread, | |
293 | struct ip_callchain *chain, | |
294 | struct symbol **parent) | |
a328626b ACM |
295 | { |
296 | u8 cpumode = PERF_RECORD_MISC_USER; | |
a328626b | 297 | unsigned int i; |
1b3a0e95 | 298 | int err; |
a328626b | 299 | |
246d4ce8 | 300 | callchain_cursor_reset(&evsel->hists.callchain_cursor); |
a328626b ACM |
301 | |
302 | for (i = 0; i < chain->nr; i++) { | |
d797fdc5 | 303 | u64 ip; |
a328626b ACM |
304 | struct addr_location al; |
305 | ||
d797fdc5 SL |
306 | if (callchain_param.order == ORDER_CALLEE) |
307 | ip = chain->ips[i]; | |
308 | else | |
309 | ip = chain->ips[chain->nr - i - 1]; | |
310 | ||
a328626b ACM |
311 | if (ip >= PERF_CONTEXT_MAX) { |
312 | switch (ip) { | |
313 | case PERF_CONTEXT_HV: | |
314 | cpumode = PERF_RECORD_MISC_HYPERVISOR; break; | |
315 | case PERF_CONTEXT_KERNEL: | |
316 | cpumode = PERF_RECORD_MISC_KERNEL; break; | |
317 | case PERF_CONTEXT_USER: | |
318 | cpumode = PERF_RECORD_MISC_USER; break; | |
319 | default: | |
320 | break; | |
321 | } | |
322 | continue; | |
323 | } | |
324 | ||
a1645ce1 | 325 | al.filtered = false; |
a328626b | 326 | thread__find_addr_location(thread, self, cpumode, |
743eb868 | 327 | MAP__FUNCTION, ip, &al, NULL); |
a328626b ACM |
328 | if (al.sym != NULL) { |
329 | if (sort__has_parent && !*parent && | |
330 | symbol__match_parent_regex(al.sym)) | |
331 | *parent = al.sym; | |
d599db3f | 332 | if (!symbol_conf.use_callchain) |
a328626b | 333 | break; |
a328626b | 334 | } |
1b3a0e95 | 335 | |
246d4ce8 | 336 | err = callchain_cursor_append(&evsel->hists.callchain_cursor, |
1b3a0e95 FW |
337 | ip, al.map, al.sym); |
338 | if (err) | |
339 | return err; | |
a328626b ACM |
340 | } |
341 | ||
1b3a0e95 | 342 | return 0; |
a328626b | 343 | } |
06aae590 | 344 | |
d20deb64 ACM |
345 | static int process_event_synth_tracing_data_stub(union perf_event *event __used, |
346 | struct perf_session *session __used) | |
347 | { | |
348 | dump_printf(": unhandled!\n"); | |
349 | return 0; | |
350 | } | |
351 | ||
10d0f086 ACM |
352 | static int process_event_synth_attr_stub(union perf_event *event __used, |
353 | struct perf_evlist **pevlist __used) | |
354 | { | |
355 | dump_printf(": unhandled!\n"); | |
356 | return 0; | |
357 | } | |
358 | ||
45694aa7 | 359 | static int process_event_sample_stub(struct perf_tool *tool __used, |
d20deb64 | 360 | union perf_event *event __used, |
9e69c210 ACM |
361 | struct perf_sample *sample __used, |
362 | struct perf_evsel *evsel __used, | |
743eb868 | 363 | struct machine *machine __used) |
9e69c210 ACM |
364 | { |
365 | dump_printf(": unhandled!\n"); | |
366 | return 0; | |
367 | } | |
368 | ||
45694aa7 | 369 | static int process_event_stub(struct perf_tool *tool __used, |
d20deb64 | 370 | union perf_event *event __used, |
8d50e5b4 | 371 | struct perf_sample *sample __used, |
743eb868 | 372 | struct machine *machine __used) |
06aae590 ACM |
373 | { |
374 | dump_printf(": unhandled!\n"); | |
375 | return 0; | |
376 | } | |
377 | ||
45694aa7 | 378 | static int process_finished_round_stub(struct perf_tool *tool __used, |
d20deb64 | 379 | union perf_event *event __used, |
743eb868 ACM |
380 | struct perf_session *perf_session __used) |
381 | { | |
382 | dump_printf(": unhandled!\n"); | |
383 | return 0; | |
384 | } | |
385 | ||
45694aa7 | 386 | static int process_event_type_stub(struct perf_tool *tool __used, |
743eb868 | 387 | union perf_event *event __used) |
d6b17beb FW |
388 | { |
389 | dump_printf(": unhandled!\n"); | |
390 | return 0; | |
391 | } | |
392 | ||
45694aa7 | 393 | static int process_finished_round(struct perf_tool *tool, |
d20deb64 ACM |
394 | union perf_event *event, |
395 | struct perf_session *session); | |
d6b17beb | 396 | |
45694aa7 | 397 | static void perf_tool__fill_defaults(struct perf_tool *tool) |
06aae590 | 398 | { |
45694aa7 ACM |
399 | if (tool->sample == NULL) |
400 | tool->sample = process_event_sample_stub; | |
401 | if (tool->mmap == NULL) | |
402 | tool->mmap = process_event_stub; | |
403 | if (tool->comm == NULL) | |
404 | tool->comm = process_event_stub; | |
405 | if (tool->fork == NULL) | |
406 | tool->fork = process_event_stub; | |
407 | if (tool->exit == NULL) | |
408 | tool->exit = process_event_stub; | |
409 | if (tool->lost == NULL) | |
410 | tool->lost = perf_event__process_lost; | |
411 | if (tool->read == NULL) | |
412 | tool->read = process_event_sample_stub; | |
413 | if (tool->throttle == NULL) | |
414 | tool->throttle = process_event_stub; | |
415 | if (tool->unthrottle == NULL) | |
416 | tool->unthrottle = process_event_stub; | |
417 | if (tool->attr == NULL) | |
418 | tool->attr = process_event_synth_attr_stub; | |
419 | if (tool->event_type == NULL) | |
420 | tool->event_type = process_event_type_stub; | |
421 | if (tool->tracing_data == NULL) | |
422 | tool->tracing_data = process_event_synth_tracing_data_stub; | |
423 | if (tool->build_id == NULL) | |
424 | tool->build_id = process_finished_round_stub; | |
425 | if (tool->finished_round == NULL) { | |
426 | if (tool->ordered_samples) | |
427 | tool->finished_round = process_finished_round; | |
d6b17beb | 428 | else |
45694aa7 | 429 | tool->finished_round = process_finished_round_stub; |
d6b17beb | 430 | } |
06aae590 ACM |
431 | } |
432 | ||
ba21594c ACM |
433 | void mem_bswap_64(void *src, int byte_size) |
434 | { | |
435 | u64 *m = src; | |
436 | ||
437 | while (byte_size > 0) { | |
438 | *m = bswap_64(*m); | |
439 | byte_size -= sizeof(u64); | |
440 | ++m; | |
441 | } | |
442 | } | |
443 | ||
8115d60c | 444 | static void perf_event__all64_swap(union perf_event *event) |
ba21594c | 445 | { |
8115d60c ACM |
446 | struct perf_event_header *hdr = &event->header; |
447 | mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr)); | |
ba21594c ACM |
448 | } |
449 | ||
8115d60c | 450 | static void perf_event__comm_swap(union perf_event *event) |
ba21594c | 451 | { |
8115d60c ACM |
452 | event->comm.pid = bswap_32(event->comm.pid); |
453 | event->comm.tid = bswap_32(event->comm.tid); | |
ba21594c ACM |
454 | } |
455 | ||
8115d60c | 456 | static void perf_event__mmap_swap(union perf_event *event) |
ba21594c | 457 | { |
8115d60c ACM |
458 | event->mmap.pid = bswap_32(event->mmap.pid); |
459 | event->mmap.tid = bswap_32(event->mmap.tid); | |
460 | event->mmap.start = bswap_64(event->mmap.start); | |
461 | event->mmap.len = bswap_64(event->mmap.len); | |
462 | event->mmap.pgoff = bswap_64(event->mmap.pgoff); | |
ba21594c ACM |
463 | } |
464 | ||
8115d60c | 465 | static void perf_event__task_swap(union perf_event *event) |
ba21594c | 466 | { |
8115d60c ACM |
467 | event->fork.pid = bswap_32(event->fork.pid); |
468 | event->fork.tid = bswap_32(event->fork.tid); | |
469 | event->fork.ppid = bswap_32(event->fork.ppid); | |
470 | event->fork.ptid = bswap_32(event->fork.ptid); | |
471 | event->fork.time = bswap_64(event->fork.time); | |
ba21594c ACM |
472 | } |
473 | ||
8115d60c | 474 | static void perf_event__read_swap(union perf_event *event) |
ba21594c | 475 | { |
8115d60c ACM |
476 | event->read.pid = bswap_32(event->read.pid); |
477 | event->read.tid = bswap_32(event->read.tid); | |
478 | event->read.value = bswap_64(event->read.value); | |
479 | event->read.time_enabled = bswap_64(event->read.time_enabled); | |
480 | event->read.time_running = bswap_64(event->read.time_running); | |
481 | event->read.id = bswap_64(event->read.id); | |
ba21594c ACM |
482 | } |
483 | ||
eda3913b DA |
484 | /* exported for swapping attributes in file header */ |
485 | void perf_event__attr_swap(struct perf_event_attr *attr) | |
486 | { | |
487 | attr->type = bswap_32(attr->type); | |
488 | attr->size = bswap_32(attr->size); | |
489 | attr->config = bswap_64(attr->config); | |
490 | attr->sample_period = bswap_64(attr->sample_period); | |
491 | attr->sample_type = bswap_64(attr->sample_type); | |
492 | attr->read_format = bswap_64(attr->read_format); | |
493 | attr->wakeup_events = bswap_32(attr->wakeup_events); | |
494 | attr->bp_type = bswap_32(attr->bp_type); | |
495 | attr->bp_addr = bswap_64(attr->bp_addr); | |
496 | attr->bp_len = bswap_64(attr->bp_len); | |
497 | } | |
498 | ||
499 | static void perf_event__hdr_attr_swap(union perf_event *event) | |
2c46dbb5 TZ |
500 | { |
501 | size_t size; | |
502 | ||
eda3913b | 503 | perf_event__attr_swap(&event->attr.attr); |
2c46dbb5 | 504 | |
8115d60c ACM |
505 | size = event->header.size; |
506 | size -= (void *)&event->attr.id - (void *)event; | |
507 | mem_bswap_64(event->attr.id, size); | |
2c46dbb5 TZ |
508 | } |
509 | ||
8115d60c | 510 | static void perf_event__event_type_swap(union perf_event *event) |
cd19a035 | 511 | { |
8115d60c ACM |
512 | event->event_type.event_type.event_id = |
513 | bswap_64(event->event_type.event_type.event_id); | |
cd19a035 TZ |
514 | } |
515 | ||
8115d60c | 516 | static void perf_event__tracing_data_swap(union perf_event *event) |
9215545e | 517 | { |
8115d60c | 518 | event->tracing_data.size = bswap_32(event->tracing_data.size); |
9215545e TZ |
519 | } |
520 | ||
8115d60c | 521 | typedef void (*perf_event__swap_op)(union perf_event *event); |
ba21594c | 522 | |
8115d60c ACM |
523 | static perf_event__swap_op perf_event__swap_ops[] = { |
524 | [PERF_RECORD_MMAP] = perf_event__mmap_swap, | |
525 | [PERF_RECORD_COMM] = perf_event__comm_swap, | |
526 | [PERF_RECORD_FORK] = perf_event__task_swap, | |
527 | [PERF_RECORD_EXIT] = perf_event__task_swap, | |
528 | [PERF_RECORD_LOST] = perf_event__all64_swap, | |
529 | [PERF_RECORD_READ] = perf_event__read_swap, | |
530 | [PERF_RECORD_SAMPLE] = perf_event__all64_swap, | |
eda3913b | 531 | [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap, |
8115d60c ACM |
532 | [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap, |
533 | [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap, | |
534 | [PERF_RECORD_HEADER_BUILD_ID] = NULL, | |
535 | [PERF_RECORD_HEADER_MAX] = NULL, | |
ba21594c ACM |
536 | }; |
537 | ||
c61e52ee FW |
538 | struct sample_queue { |
539 | u64 timestamp; | |
e4c2df13 | 540 | u64 file_offset; |
8115d60c | 541 | union perf_event *event; |
c61e52ee FW |
542 | struct list_head list; |
543 | }; | |
544 | ||
020bb75a TG |
545 | static void perf_session_free_sample_buffers(struct perf_session *session) |
546 | { | |
547 | struct ordered_samples *os = &session->ordered_samples; | |
548 | ||
5c891f38 | 549 | while (!list_empty(&os->to_free)) { |
020bb75a TG |
550 | struct sample_queue *sq; |
551 | ||
5c891f38 | 552 | sq = list_entry(os->to_free.next, struct sample_queue, list); |
020bb75a TG |
553 | list_del(&sq->list); |
554 | free(sq); | |
555 | } | |
556 | } | |
557 | ||
cbf41645 | 558 | static int perf_session_deliver_event(struct perf_session *session, |
8115d60c | 559 | union perf_event *event, |
8d50e5b4 | 560 | struct perf_sample *sample, |
45694aa7 | 561 | struct perf_tool *tool, |
f74725dc | 562 | u64 file_offset); |
cbf41645 | 563 | |
c61e52ee | 564 | static void flush_sample_queue(struct perf_session *s, |
45694aa7 | 565 | struct perf_tool *tool) |
c61e52ee | 566 | { |
a1225dec TG |
567 | struct ordered_samples *os = &s->ordered_samples; |
568 | struct list_head *head = &os->samples; | |
c61e52ee | 569 | struct sample_queue *tmp, *iter; |
8d50e5b4 | 570 | struct perf_sample sample; |
a1225dec TG |
571 | u64 limit = os->next_flush; |
572 | u64 last_ts = os->last_sample ? os->last_sample->timestamp : 0ULL; | |
88660563 | 573 | unsigned idx = 0, progress_next = os->nr_samples / 16; |
5538beca | 574 | int ret; |
c61e52ee | 575 | |
45694aa7 | 576 | if (!tool->ordered_samples || !limit) |
c61e52ee FW |
577 | return; |
578 | ||
579 | list_for_each_entry_safe(iter, tmp, head, list) { | |
580 | if (iter->timestamp > limit) | |
a1225dec | 581 | break; |
c61e52ee | 582 | |
5538beca FW |
583 | ret = perf_session__parse_sample(s, iter->event, &sample); |
584 | if (ret) | |
585 | pr_err("Can't parse sample, err = %d\n", ret); | |
586 | else | |
45694aa7 | 587 | perf_session_deliver_event(s, iter->event, &sample, tool, |
5538beca | 588 | iter->file_offset); |
c61e52ee | 589 | |
a1225dec | 590 | os->last_flush = iter->timestamp; |
c61e52ee | 591 | list_del(&iter->list); |
020bb75a | 592 | list_add(&iter->list, &os->sample_cache); |
88660563 ACM |
593 | if (++idx >= progress_next) { |
594 | progress_next += os->nr_samples / 16; | |
595 | ui_progress__update(idx, os->nr_samples, | |
596 | "Processing time ordered events..."); | |
597 | } | |
c61e52ee | 598 | } |
a1225dec TG |
599 | |
600 | if (list_empty(head)) { | |
601 | os->last_sample = NULL; | |
602 | } else if (last_ts <= limit) { | |
603 | os->last_sample = | |
604 | list_entry(head->prev, struct sample_queue, list); | |
605 | } | |
88660563 ACM |
606 | |
607 | os->nr_samples = 0; | |
c61e52ee FW |
608 | } |
609 | ||
d6b17beb FW |
610 | /* |
611 | * When perf record finishes a pass on every buffers, it records this pseudo | |
612 | * event. | |
613 | * We record the max timestamp t found in the pass n. | |
614 | * Assuming these timestamps are monotonic across cpus, we know that if | |
615 | * a buffer still has events with timestamps below t, they will be all | |
616 | * available and then read in the pass n + 1. | |
617 | * Hence when we start to read the pass n + 2, we can safely flush every | |
618 | * events with timestamps below t. | |
619 | * | |
620 | * ============ PASS n ================= | |
621 | * CPU 0 | CPU 1 | |
622 | * | | |
623 | * cnt1 timestamps | cnt2 timestamps | |
624 | * 1 | 2 | |
625 | * 2 | 3 | |
626 | * - | 4 <--- max recorded | |
627 | * | |
628 | * ============ PASS n + 1 ============== | |
629 | * CPU 0 | CPU 1 | |
630 | * | | |
631 | * cnt1 timestamps | cnt2 timestamps | |
632 | * 3 | 5 | |
633 | * 4 | 6 | |
634 | * 5 | 7 <---- max recorded | |
635 | * | |
636 | * Flush every events below timestamp 4 | |
637 | * | |
638 | * ============ PASS n + 2 ============== | |
639 | * CPU 0 | CPU 1 | |
640 | * | | |
641 | * cnt1 timestamps | cnt2 timestamps | |
642 | * 6 | 8 | |
643 | * 7 | 9 | |
644 | * - | 10 | |
645 | * | |
646 | * Flush every events below timestamp 7 | |
647 | * etc... | |
648 | */ | |
45694aa7 | 649 | static int process_finished_round(struct perf_tool *tool, |
d20deb64 ACM |
650 | union perf_event *event __used, |
651 | struct perf_session *session) | |
d6b17beb | 652 | { |
45694aa7 | 653 | flush_sample_queue(session, tool); |
d6b17beb FW |
654 | session->ordered_samples.next_flush = session->ordered_samples.max_timestamp; |
655 | ||
656 | return 0; | |
657 | } | |
658 | ||
c61e52ee | 659 | /* The queue is ordered by time */ |
cbf41645 | 660 | static void __queue_event(struct sample_queue *new, struct perf_session *s) |
c61e52ee | 661 | { |
a1225dec TG |
662 | struct ordered_samples *os = &s->ordered_samples; |
663 | struct sample_queue *sample = os->last_sample; | |
664 | u64 timestamp = new->timestamp; | |
665 | struct list_head *p; | |
c61e52ee | 666 | |
88660563 | 667 | ++os->nr_samples; |
a1225dec | 668 | os->last_sample = new; |
c61e52ee | 669 | |
a1225dec TG |
670 | if (!sample) { |
671 | list_add(&new->list, &os->samples); | |
672 | os->max_timestamp = timestamp; | |
c61e52ee FW |
673 | return; |
674 | } | |
675 | ||
676 | /* | |
a1225dec TG |
677 | * last_sample might point to some random place in the list as it's |
678 | * the last queued event. We expect that the new event is close to | |
679 | * this. | |
c61e52ee | 680 | */ |
a1225dec TG |
681 | if (sample->timestamp <= timestamp) { |
682 | while (sample->timestamp <= timestamp) { | |
683 | p = sample->list.next; | |
684 | if (p == &os->samples) { | |
685 | list_add_tail(&new->list, &os->samples); | |
686 | os->max_timestamp = timestamp; | |
687 | return; | |
688 | } | |
689 | sample = list_entry(p, struct sample_queue, list); | |
690 | } | |
691 | list_add_tail(&new->list, &sample->list); | |
692 | } else { | |
693 | while (sample->timestamp > timestamp) { | |
694 | p = sample->list.prev; | |
695 | if (p == &os->samples) { | |
696 | list_add(&new->list, &os->samples); | |
697 | return; | |
698 | } | |
699 | sample = list_entry(p, struct sample_queue, list); | |
700 | } | |
701 | list_add(&new->list, &sample->list); | |
702 | } | |
c61e52ee FW |
703 | } |
704 | ||
5c891f38 TG |
705 | #define MAX_SAMPLE_BUFFER (64 * 1024 / sizeof(struct sample_queue)) |
706 | ||
8115d60c | 707 | static int perf_session_queue_event(struct perf_session *s, union perf_event *event, |
8d50e5b4 | 708 | struct perf_sample *sample, u64 file_offset) |
c61e52ee | 709 | { |
5c891f38 TG |
710 | struct ordered_samples *os = &s->ordered_samples; |
711 | struct list_head *sc = &os->sample_cache; | |
8d50e5b4 | 712 | u64 timestamp = sample->time; |
c61e52ee | 713 | struct sample_queue *new; |
c61e52ee | 714 | |
79a14c1f | 715 | if (!timestamp || timestamp == ~0ULL) |
cbf41645 TG |
716 | return -ETIME; |
717 | ||
c61e52ee FW |
718 | if (timestamp < s->ordered_samples.last_flush) { |
719 | printf("Warning: Timestamp below last timeslice flush\n"); | |
720 | return -EINVAL; | |
721 | } | |
722 | ||
020bb75a TG |
723 | if (!list_empty(sc)) { |
724 | new = list_entry(sc->next, struct sample_queue, list); | |
725 | list_del(&new->list); | |
5c891f38 TG |
726 | } else if (os->sample_buffer) { |
727 | new = os->sample_buffer + os->sample_buffer_idx; | |
728 | if (++os->sample_buffer_idx == MAX_SAMPLE_BUFFER) | |
729 | os->sample_buffer = NULL; | |
020bb75a | 730 | } else { |
5c891f38 TG |
731 | os->sample_buffer = malloc(MAX_SAMPLE_BUFFER * sizeof(*new)); |
732 | if (!os->sample_buffer) | |
020bb75a | 733 | return -ENOMEM; |
5c891f38 TG |
734 | list_add(&os->sample_buffer->list, &os->to_free); |
735 | os->sample_buffer_idx = 2; | |
736 | new = os->sample_buffer + 1; | |
020bb75a | 737 | } |
c61e52ee FW |
738 | |
739 | new->timestamp = timestamp; | |
e4c2df13 | 740 | new->file_offset = file_offset; |
fe174207 | 741 | new->event = event; |
c61e52ee | 742 | |
cbf41645 | 743 | __queue_event(new, s); |
640c03ce | 744 | |
640c03ce ACM |
745 | return 0; |
746 | } | |
c61e52ee | 747 | |
8d50e5b4 | 748 | static void callchain__printf(struct perf_sample *sample) |
640c03ce ACM |
749 | { |
750 | unsigned int i; | |
c61e52ee | 751 | |
9486aa38 | 752 | printf("... chain: nr:%" PRIu64 "\n", sample->callchain->nr); |
640c03ce ACM |
753 | |
754 | for (i = 0; i < sample->callchain->nr; i++) | |
9486aa38 ACM |
755 | printf("..... %2d: %016" PRIx64 "\n", |
756 | i, sample->callchain->ips[i]); | |
c61e52ee FW |
757 | } |
758 | ||
b5387528 RAV |
759 | static void branch_stack__printf(struct perf_sample *sample) |
760 | { | |
761 | uint64_t i; | |
762 | ||
763 | printf("... branch stack: nr:%" PRIu64 "\n", sample->branch_stack->nr); | |
764 | ||
765 | for (i = 0; i < sample->branch_stack->nr; i++) | |
766 | printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 "\n", | |
767 | i, sample->branch_stack->entries[i].from, | |
768 | sample->branch_stack->entries[i].to); | |
769 | } | |
770 | ||
9c90a61c | 771 | static void perf_session__print_tstamp(struct perf_session *session, |
8115d60c | 772 | union perf_event *event, |
8d50e5b4 | 773 | struct perf_sample *sample) |
9c90a61c ACM |
774 | { |
775 | if (event->header.type != PERF_RECORD_SAMPLE && | |
776 | !session->sample_id_all) { | |
777 | fputs("-1 -1 ", stdout); | |
778 | return; | |
779 | } | |
780 | ||
781 | if ((session->sample_type & PERF_SAMPLE_CPU)) | |
782 | printf("%u ", sample->cpu); | |
783 | ||
784 | if (session->sample_type & PERF_SAMPLE_TIME) | |
9486aa38 | 785 | printf("%" PRIu64 " ", sample->time); |
9c90a61c ACM |
786 | } |
787 | ||
8115d60c | 788 | static void dump_event(struct perf_session *session, union perf_event *event, |
8d50e5b4 | 789 | u64 file_offset, struct perf_sample *sample) |
9aefcab0 TG |
790 | { |
791 | if (!dump_trace) | |
792 | return; | |
793 | ||
9486aa38 ACM |
794 | printf("\n%#" PRIx64 " [%#x]: event: %d\n", |
795 | file_offset, event->header.size, event->header.type); | |
9aefcab0 TG |
796 | |
797 | trace_event(event); | |
798 | ||
799 | if (sample) | |
800 | perf_session__print_tstamp(session, event, sample); | |
801 | ||
9486aa38 | 802 | printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset, |
8115d60c | 803 | event->header.size, perf_event__name(event->header.type)); |
9aefcab0 TG |
804 | } |
805 | ||
8115d60c | 806 | static void dump_sample(struct perf_session *session, union perf_event *event, |
8d50e5b4 | 807 | struct perf_sample *sample) |
9aefcab0 | 808 | { |
ddbc24b7 ACM |
809 | if (!dump_trace) |
810 | return; | |
811 | ||
7cec0922 | 812 | printf("(IP, %d): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n", |
9486aa38 | 813 | event->header.misc, sample->pid, sample->tid, sample->ip, |
7cec0922 | 814 | sample->period, sample->addr); |
9aefcab0 TG |
815 | |
816 | if (session->sample_type & PERF_SAMPLE_CALLCHAIN) | |
ddbc24b7 | 817 | callchain__printf(sample); |
b5387528 RAV |
818 | |
819 | if (session->sample_type & PERF_SAMPLE_BRANCH_STACK) | |
820 | branch_stack__printf(sample); | |
9aefcab0 TG |
821 | } |
822 | ||
743eb868 ACM |
823 | static struct machine * |
824 | perf_session__find_machine_for_cpumode(struct perf_session *session, | |
825 | union perf_event *event) | |
826 | { | |
827 | const u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
828 | ||
7fb0a5ee ND |
829 | if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) { |
830 | u32 pid; | |
831 | ||
832 | if (event->header.type == PERF_RECORD_MMAP) | |
833 | pid = event->mmap.pid; | |
834 | else | |
835 | pid = event->ip.pid; | |
836 | ||
837 | return perf_session__find_machine(session, pid); | |
838 | } | |
743eb868 ACM |
839 | |
840 | return perf_session__find_host_machine(session); | |
841 | } | |
842 | ||
cbf41645 | 843 | static int perf_session_deliver_event(struct perf_session *session, |
8115d60c | 844 | union perf_event *event, |
8d50e5b4 | 845 | struct perf_sample *sample, |
45694aa7 | 846 | struct perf_tool *tool, |
532e7269 | 847 | u64 file_offset) |
cbf41645 | 848 | { |
9e69c210 | 849 | struct perf_evsel *evsel; |
743eb868 | 850 | struct machine *machine; |
9e69c210 | 851 | |
532e7269 TG |
852 | dump_event(session, event, file_offset, sample); |
853 | ||
7b27509f ACM |
854 | evsel = perf_evlist__id2evsel(session->evlist, sample->id); |
855 | if (evsel != NULL && event->header.type != PERF_RECORD_SAMPLE) { | |
856 | /* | |
857 | * XXX We're leaving PERF_RECORD_SAMPLE unnacounted here | |
858 | * because the tools right now may apply filters, discarding | |
859 | * some of the samples. For consistency, in the future we | |
860 | * should have something like nr_filtered_samples and remove | |
861 | * the sample->period from total_sample_period, etc, KISS for | |
862 | * now tho. | |
863 | * | |
864 | * Also testing against NULL allows us to handle files without | |
865 | * attr.sample_id_all and/or without PERF_SAMPLE_ID. In the | |
866 | * future probably it'll be a good idea to restrict event | |
867 | * processing via perf_session to files with both set. | |
868 | */ | |
869 | hists__inc_nr_events(&evsel->hists, event->header.type); | |
870 | } | |
871 | ||
743eb868 ACM |
872 | machine = perf_session__find_machine_for_cpumode(session, event); |
873 | ||
cbf41645 TG |
874 | switch (event->header.type) { |
875 | case PERF_RECORD_SAMPLE: | |
532e7269 | 876 | dump_sample(session, event, sample); |
9e69c210 ACM |
877 | if (evsel == NULL) { |
878 | ++session->hists.stats.nr_unknown_id; | |
6782206b | 879 | return 0; |
9e69c210 | 880 | } |
0c095715 JR |
881 | if (machine == NULL) { |
882 | ++session->hists.stats.nr_unprocessable_samples; | |
6782206b | 883 | return 0; |
0c095715 | 884 | } |
45694aa7 | 885 | return tool->sample(tool, event, sample, evsel, machine); |
cbf41645 | 886 | case PERF_RECORD_MMAP: |
45694aa7 | 887 | return tool->mmap(tool, event, sample, machine); |
cbf41645 | 888 | case PERF_RECORD_COMM: |
45694aa7 | 889 | return tool->comm(tool, event, sample, machine); |
cbf41645 | 890 | case PERF_RECORD_FORK: |
45694aa7 | 891 | return tool->fork(tool, event, sample, machine); |
cbf41645 | 892 | case PERF_RECORD_EXIT: |
45694aa7 | 893 | return tool->exit(tool, event, sample, machine); |
cbf41645 | 894 | case PERF_RECORD_LOST: |
45694aa7 | 895 | if (tool->lost == perf_event__process_lost) |
743eb868 | 896 | session->hists.stats.total_lost += event->lost.lost; |
45694aa7 | 897 | return tool->lost(tool, event, sample, machine); |
cbf41645 | 898 | case PERF_RECORD_READ: |
45694aa7 | 899 | return tool->read(tool, event, sample, evsel, machine); |
cbf41645 | 900 | case PERF_RECORD_THROTTLE: |
45694aa7 | 901 | return tool->throttle(tool, event, sample, machine); |
cbf41645 | 902 | case PERF_RECORD_UNTHROTTLE: |
45694aa7 | 903 | return tool->unthrottle(tool, event, sample, machine); |
cbf41645 TG |
904 | default: |
905 | ++session->hists.stats.nr_unknown_events; | |
906 | return -1; | |
907 | } | |
908 | } | |
909 | ||
3dfc2c0a | 910 | static int perf_session__preprocess_sample(struct perf_session *session, |
8115d60c | 911 | union perf_event *event, struct perf_sample *sample) |
3dfc2c0a TG |
912 | { |
913 | if (event->header.type != PERF_RECORD_SAMPLE || | |
914 | !(session->sample_type & PERF_SAMPLE_CALLCHAIN)) | |
915 | return 0; | |
916 | ||
917 | if (!ip_callchain__valid(sample->callchain, event)) { | |
918 | pr_debug("call-chain problem with event, skipping it.\n"); | |
919 | ++session->hists.stats.nr_invalid_chains; | |
920 | session->hists.stats.total_invalid_chains += sample->period; | |
921 | return -EINVAL; | |
922 | } | |
923 | return 0; | |
924 | } | |
925 | ||
8115d60c | 926 | static int perf_session__process_user_event(struct perf_session *session, union perf_event *event, |
45694aa7 | 927 | struct perf_tool *tool, u64 file_offset) |
06aae590 | 928 | { |
10d0f086 ACM |
929 | int err; |
930 | ||
ba74f064 | 931 | dump_event(session, event, file_offset, NULL); |
06aae590 | 932 | |
cbf41645 | 933 | /* These events are processed right away */ |
06aae590 | 934 | switch (event->header.type) { |
2c46dbb5 | 935 | case PERF_RECORD_HEADER_ATTR: |
45694aa7 | 936 | err = tool->attr(event, &session->evlist); |
10d0f086 ACM |
937 | if (err == 0) |
938 | perf_session__update_sample_type(session); | |
939 | return err; | |
cd19a035 | 940 | case PERF_RECORD_HEADER_EVENT_TYPE: |
45694aa7 | 941 | return tool->event_type(tool, event); |
9215545e TZ |
942 | case PERF_RECORD_HEADER_TRACING_DATA: |
943 | /* setup for reading amidst mmap */ | |
cbf41645 | 944 | lseek(session->fd, file_offset, SEEK_SET); |
45694aa7 | 945 | return tool->tracing_data(event, session); |
c7929e47 | 946 | case PERF_RECORD_HEADER_BUILD_ID: |
45694aa7 | 947 | return tool->build_id(tool, event, session); |
d6b17beb | 948 | case PERF_RECORD_FINISHED_ROUND: |
45694aa7 | 949 | return tool->finished_round(tool, event, session); |
06aae590 | 950 | default: |
ba74f064 | 951 | return -EINVAL; |
06aae590 | 952 | } |
ba74f064 TG |
953 | } |
954 | ||
955 | static int perf_session__process_event(struct perf_session *session, | |
8115d60c | 956 | union perf_event *event, |
45694aa7 | 957 | struct perf_tool *tool, |
ba74f064 TG |
958 | u64 file_offset) |
959 | { | |
8d50e5b4 | 960 | struct perf_sample sample; |
ba74f064 TG |
961 | int ret; |
962 | ||
8115d60c ACM |
963 | if (session->header.needs_swap && |
964 | perf_event__swap_ops[event->header.type]) | |
965 | perf_event__swap_ops[event->header.type](event); | |
ba74f064 TG |
966 | |
967 | if (event->header.type >= PERF_RECORD_HEADER_MAX) | |
968 | return -EINVAL; | |
969 | ||
970 | hists__inc_nr_events(&session->hists, event->header.type); | |
971 | ||
972 | if (event->header.type >= PERF_RECORD_USER_TYPE_START) | |
45694aa7 | 973 | return perf_session__process_user_event(session, event, tool, file_offset); |
cbf41645 | 974 | |
3dfc2c0a TG |
975 | /* |
976 | * For all kernel events we get the sample data | |
977 | */ | |
5538beca FW |
978 | ret = perf_session__parse_sample(session, event, &sample); |
979 | if (ret) | |
980 | return ret; | |
3dfc2c0a TG |
981 | |
982 | /* Preprocess sample records - precheck callchains */ | |
983 | if (perf_session__preprocess_sample(session, event, &sample)) | |
984 | return 0; | |
985 | ||
45694aa7 | 986 | if (tool->ordered_samples) { |
e4c2df13 TG |
987 | ret = perf_session_queue_event(session, event, &sample, |
988 | file_offset); | |
cbf41645 TG |
989 | if (ret != -ETIME) |
990 | return ret; | |
991 | } | |
992 | ||
45694aa7 | 993 | return perf_session_deliver_event(session, event, &sample, tool, |
f74725dc | 994 | file_offset); |
06aae590 ACM |
995 | } |
996 | ||
ba21594c ACM |
997 | void perf_event_header__bswap(struct perf_event_header *self) |
998 | { | |
999 | self->type = bswap_32(self->type); | |
1000 | self->misc = bswap_16(self->misc); | |
1001 | self->size = bswap_16(self->size); | |
1002 | } | |
1003 | ||
b424eba2 ACM |
1004 | struct thread *perf_session__findnew(struct perf_session *session, pid_t pid) |
1005 | { | |
1006 | return machine__findnew_thread(&session->host_machine, pid); | |
1007 | } | |
1008 | ||
06aae590 ACM |
1009 | static struct thread *perf_session__register_idle_thread(struct perf_session *self) |
1010 | { | |
1011 | struct thread *thread = perf_session__findnew(self, 0); | |
1012 | ||
1013 | if (thread == NULL || thread__set_comm(thread, "swapper")) { | |
1014 | pr_err("problem inserting idle task.\n"); | |
1015 | thread = NULL; | |
1016 | } | |
1017 | ||
1018 | return thread; | |
1019 | } | |
1020 | ||
11095994 | 1021 | static void perf_session__warn_about_errors(const struct perf_session *session, |
45694aa7 | 1022 | const struct perf_tool *tool) |
11095994 | 1023 | { |
45694aa7 | 1024 | if (tool->lost == perf_event__process_lost && |
7b27509f ACM |
1025 | session->hists.stats.nr_events[PERF_RECORD_LOST] != 0) { |
1026 | ui__warning("Processed %d events and lost %d chunks!\n\n" | |
1027 | "Check IO/CPU overload!\n\n", | |
1028 | session->hists.stats.nr_events[0], | |
1029 | session->hists.stats.nr_events[PERF_RECORD_LOST]); | |
11095994 ACM |
1030 | } |
1031 | ||
1032 | if (session->hists.stats.nr_unknown_events != 0) { | |
1033 | ui__warning("Found %u unknown events!\n\n" | |
1034 | "Is this an older tool processing a perf.data " | |
1035 | "file generated by a more recent tool?\n\n" | |
1036 | "If that is not the case, consider " | |
1037 | "reporting to linux-kernel@vger.kernel.org.\n\n", | |
1038 | session->hists.stats.nr_unknown_events); | |
1039 | } | |
1040 | ||
9e69c210 ACM |
1041 | if (session->hists.stats.nr_unknown_id != 0) { |
1042 | ui__warning("%u samples with id not present in the header\n", | |
1043 | session->hists.stats.nr_unknown_id); | |
1044 | } | |
1045 | ||
11095994 ACM |
1046 | if (session->hists.stats.nr_invalid_chains != 0) { |
1047 | ui__warning("Found invalid callchains!\n\n" | |
1048 | "%u out of %u events were discarded for this reason.\n\n" | |
1049 | "Consider reporting to linux-kernel@vger.kernel.org.\n\n", | |
1050 | session->hists.stats.nr_invalid_chains, | |
1051 | session->hists.stats.nr_events[PERF_RECORD_SAMPLE]); | |
1052 | } | |
0c095715 JR |
1053 | |
1054 | if (session->hists.stats.nr_unprocessable_samples != 0) { | |
1055 | ui__warning("%u unprocessable samples recorded.\n" | |
1056 | "Do you have a KVM guest running and not using 'perf kvm'?\n", | |
1057 | session->hists.stats.nr_unprocessable_samples); | |
1058 | } | |
11095994 ACM |
1059 | } |
1060 | ||
8dc58101 TZ |
1061 | #define session_done() (*(volatile int *)(&session_done)) |
1062 | volatile int session_done; | |
1063 | ||
1064 | static int __perf_session__process_pipe_events(struct perf_session *self, | |
45694aa7 | 1065 | struct perf_tool *tool) |
8dc58101 | 1066 | { |
8115d60c | 1067 | union perf_event event; |
8dc58101 TZ |
1068 | uint32_t size; |
1069 | int skip = 0; | |
1070 | u64 head; | |
1071 | int err; | |
1072 | void *p; | |
1073 | ||
45694aa7 | 1074 | perf_tool__fill_defaults(tool); |
8dc58101 TZ |
1075 | |
1076 | head = 0; | |
1077 | more: | |
1e7972cc | 1078 | err = readn(self->fd, &event, sizeof(struct perf_event_header)); |
8dc58101 TZ |
1079 | if (err <= 0) { |
1080 | if (err == 0) | |
1081 | goto done; | |
1082 | ||
1083 | pr_err("failed to read event header\n"); | |
1084 | goto out_err; | |
1085 | } | |
1086 | ||
1087 | if (self->header.needs_swap) | |
1088 | perf_event_header__bswap(&event.header); | |
1089 | ||
1090 | size = event.header.size; | |
1091 | if (size == 0) | |
1092 | size = 8; | |
1093 | ||
1094 | p = &event; | |
1095 | p += sizeof(struct perf_event_header); | |
1096 | ||
794e43b5 | 1097 | if (size - sizeof(struct perf_event_header)) { |
1e7972cc | 1098 | err = readn(self->fd, p, size - sizeof(struct perf_event_header)); |
794e43b5 TZ |
1099 | if (err <= 0) { |
1100 | if (err == 0) { | |
1101 | pr_err("unexpected end of event stream\n"); | |
1102 | goto done; | |
1103 | } | |
8dc58101 | 1104 | |
794e43b5 TZ |
1105 | pr_err("failed to read event data\n"); |
1106 | goto out_err; | |
1107 | } | |
8dc58101 TZ |
1108 | } |
1109 | ||
29c9862f | 1110 | if ((skip = perf_session__process_event(self, &event, tool, head)) < 0) { |
9389a460 JO |
1111 | pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", |
1112 | head, event.header.size, event.header.type); | |
1113 | err = -EINVAL; | |
1114 | goto out_err; | |
8dc58101 TZ |
1115 | } |
1116 | ||
1117 | head += size; | |
1118 | ||
8dc58101 TZ |
1119 | if (skip > 0) |
1120 | head += skip; | |
1121 | ||
1122 | if (!session_done()) | |
1123 | goto more; | |
1124 | done: | |
1125 | err = 0; | |
1126 | out_err: | |
45694aa7 | 1127 | perf_session__warn_about_errors(self, tool); |
020bb75a | 1128 | perf_session_free_sample_buffers(self); |
8dc58101 TZ |
1129 | return err; |
1130 | } | |
1131 | ||
998bedc8 FW |
1132 | static union perf_event * |
1133 | fetch_mmaped_event(struct perf_session *session, | |
1134 | u64 head, size_t mmap_size, char *buf) | |
1135 | { | |
1136 | union perf_event *event; | |
1137 | ||
1138 | /* | |
1139 | * Ensure we have enough space remaining to read | |
1140 | * the size of the event in the headers. | |
1141 | */ | |
1142 | if (head + sizeof(event->header) > mmap_size) | |
1143 | return NULL; | |
1144 | ||
1145 | event = (union perf_event *)(buf + head); | |
1146 | ||
1147 | if (session->header.needs_swap) | |
1148 | perf_event_header__bswap(&event->header); | |
1149 | ||
1150 | if (head + event->header.size > mmap_size) | |
1151 | return NULL; | |
1152 | ||
1153 | return event; | |
1154 | } | |
1155 | ||
0331ee0c | 1156 | int __perf_session__process_events(struct perf_session *session, |
6122e4e4 | 1157 | u64 data_offset, u64 data_size, |
45694aa7 | 1158 | u64 file_size, struct perf_tool *tool) |
06aae590 | 1159 | { |
55b44629 | 1160 | u64 head, page_offset, file_offset, file_pos, progress_next; |
fe174207 | 1161 | int err, mmap_prot, mmap_flags, map_idx = 0; |
55b44629 | 1162 | size_t page_size, mmap_size; |
fe174207 | 1163 | char *buf, *mmaps[8]; |
8115d60c | 1164 | union perf_event *event; |
06aae590 | 1165 | uint32_t size; |
0331ee0c | 1166 | |
45694aa7 | 1167 | perf_tool__fill_defaults(tool); |
06aae590 | 1168 | |
1b75962e | 1169 | page_size = sysconf(_SC_PAGESIZE); |
06aae590 | 1170 | |
0331ee0c TG |
1171 | page_offset = page_size * (data_offset / page_size); |
1172 | file_offset = page_offset; | |
1173 | head = data_offset - page_offset; | |
06aae590 | 1174 | |
d6513281 TG |
1175 | if (data_offset + data_size < file_size) |
1176 | file_size = data_offset + data_size; | |
1177 | ||
55b44629 | 1178 | progress_next = file_size / 16; |
55b44629 TG |
1179 | |
1180 | mmap_size = session->mmap_window; | |
1181 | if (mmap_size > file_size) | |
1182 | mmap_size = file_size; | |
1183 | ||
fe174207 TG |
1184 | memset(mmaps, 0, sizeof(mmaps)); |
1185 | ||
ba21594c ACM |
1186 | mmap_prot = PROT_READ; |
1187 | mmap_flags = MAP_SHARED; | |
1188 | ||
0331ee0c | 1189 | if (session->header.needs_swap) { |
ba21594c ACM |
1190 | mmap_prot |= PROT_WRITE; |
1191 | mmap_flags = MAP_PRIVATE; | |
1192 | } | |
06aae590 | 1193 | remap: |
55b44629 TG |
1194 | buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, session->fd, |
1195 | file_offset); | |
06aae590 ACM |
1196 | if (buf == MAP_FAILED) { |
1197 | pr_err("failed to mmap file\n"); | |
1198 | err = -errno; | |
1199 | goto out_err; | |
1200 | } | |
fe174207 TG |
1201 | mmaps[map_idx] = buf; |
1202 | map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1); | |
d6513281 | 1203 | file_pos = file_offset + head; |
06aae590 ACM |
1204 | |
1205 | more: | |
998bedc8 FW |
1206 | event = fetch_mmaped_event(session, head, mmap_size, buf); |
1207 | if (!event) { | |
fe174207 TG |
1208 | if (mmaps[map_idx]) { |
1209 | munmap(mmaps[map_idx], mmap_size); | |
1210 | mmaps[map_idx] = NULL; | |
1211 | } | |
06aae590 | 1212 | |
0331ee0c TG |
1213 | page_offset = page_size * (head / page_size); |
1214 | file_offset += page_offset; | |
1215 | head -= page_offset; | |
06aae590 ACM |
1216 | goto remap; |
1217 | } | |
1218 | ||
1219 | size = event->header.size; | |
1220 | ||
d6513281 | 1221 | if (size == 0 || |
45694aa7 | 1222 | perf_session__process_event(session, event, tool, file_pos) < 0) { |
9389a460 JO |
1223 | pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", |
1224 | file_offset + head, event->header.size, | |
1225 | event->header.type); | |
1226 | err = -EINVAL; | |
1227 | goto out_err; | |
06aae590 ACM |
1228 | } |
1229 | ||
1230 | head += size; | |
d6513281 | 1231 | file_pos += size; |
06aae590 | 1232 | |
55b44629 TG |
1233 | if (file_pos >= progress_next) { |
1234 | progress_next += file_size / 16; | |
ca59bcbc ACM |
1235 | ui_progress__update(file_pos, file_size, |
1236 | "Processing events..."); | |
55b44629 TG |
1237 | } |
1238 | ||
d6513281 | 1239 | if (file_pos < file_size) |
06aae590 | 1240 | goto more; |
d6513281 | 1241 | |
06aae590 | 1242 | err = 0; |
c61e52ee | 1243 | /* do the final flush for ordered samples */ |
0331ee0c | 1244 | session->ordered_samples.next_flush = ULLONG_MAX; |
45694aa7 | 1245 | flush_sample_queue(session, tool); |
06aae590 | 1246 | out_err: |
45694aa7 | 1247 | perf_session__warn_about_errors(session, tool); |
020bb75a | 1248 | perf_session_free_sample_buffers(session); |
06aae590 ACM |
1249 | return err; |
1250 | } | |
27295592 | 1251 | |
6122e4e4 | 1252 | int perf_session__process_events(struct perf_session *self, |
45694aa7 | 1253 | struct perf_tool *tool) |
6122e4e4 ACM |
1254 | { |
1255 | int err; | |
1256 | ||
1257 | if (perf_session__register_idle_thread(self) == NULL) | |
1258 | return -ENOMEM; | |
1259 | ||
8dc58101 TZ |
1260 | if (!self->fd_pipe) |
1261 | err = __perf_session__process_events(self, | |
1262 | self->header.data_offset, | |
1263 | self->header.data_size, | |
45694aa7 | 1264 | self->size, tool); |
8dc58101 | 1265 | else |
45694aa7 | 1266 | err = __perf_session__process_pipe_events(self, tool); |
88ca895d | 1267 | |
6122e4e4 ACM |
1268 | return err; |
1269 | } | |
1270 | ||
d549c769 | 1271 | bool perf_session__has_traces(struct perf_session *self, const char *msg) |
27295592 ACM |
1272 | { |
1273 | if (!(self->sample_type & PERF_SAMPLE_RAW)) { | |
d549c769 ACM |
1274 | pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg); |
1275 | return false; | |
27295592 ACM |
1276 | } |
1277 | ||
d549c769 | 1278 | return true; |
27295592 | 1279 | } |
56b03f3c | 1280 | |
743eb868 ACM |
1281 | int maps__set_kallsyms_ref_reloc_sym(struct map **maps, |
1282 | const char *symbol_name, u64 addr) | |
56b03f3c ACM |
1283 | { |
1284 | char *bracket; | |
9de89fe7 | 1285 | enum map_type i; |
a1645ce1 ZY |
1286 | struct ref_reloc_sym *ref; |
1287 | ||
1288 | ref = zalloc(sizeof(struct ref_reloc_sym)); | |
1289 | if (ref == NULL) | |
1290 | return -ENOMEM; | |
56b03f3c | 1291 | |
a1645ce1 ZY |
1292 | ref->name = strdup(symbol_name); |
1293 | if (ref->name == NULL) { | |
1294 | free(ref); | |
56b03f3c | 1295 | return -ENOMEM; |
a1645ce1 | 1296 | } |
56b03f3c | 1297 | |
a1645ce1 | 1298 | bracket = strchr(ref->name, ']'); |
56b03f3c ACM |
1299 | if (bracket) |
1300 | *bracket = '\0'; | |
1301 | ||
a1645ce1 | 1302 | ref->addr = addr; |
9de89fe7 ACM |
1303 | |
1304 | for (i = 0; i < MAP__NR_TYPES; ++i) { | |
a1645ce1 ZY |
1305 | struct kmap *kmap = map__kmap(maps[i]); |
1306 | kmap->ref_reloc_sym = ref; | |
9de89fe7 ACM |
1307 | } |
1308 | ||
56b03f3c ACM |
1309 | return 0; |
1310 | } | |
1f626bc3 ACM |
1311 | |
1312 | size_t perf_session__fprintf_dsos(struct perf_session *self, FILE *fp) | |
1313 | { | |
1314 | return __dsos__fprintf(&self->host_machine.kernel_dsos, fp) + | |
1315 | __dsos__fprintf(&self->host_machine.user_dsos, fp) + | |
1316 | machines__fprintf_dsos(&self->machines, fp); | |
1317 | } | |
f869097e ACM |
1318 | |
1319 | size_t perf_session__fprintf_dsos_buildid(struct perf_session *self, FILE *fp, | |
1320 | bool with_hits) | |
1321 | { | |
1322 | size_t ret = machine__fprintf_dsos_buildid(&self->host_machine, fp, with_hits); | |
1323 | return ret + machines__fprintf_dsos_buildid(&self->machines, fp, with_hits); | |
1324 | } | |
e248de33 ACM |
1325 | |
1326 | size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp) | |
1327 | { | |
1328 | struct perf_evsel *pos; | |
1329 | size_t ret = fprintf(fp, "Aggregated stats:\n"); | |
1330 | ||
1331 | ret += hists__fprintf_nr_events(&session->hists, fp); | |
1332 | ||
1333 | list_for_each_entry(pos, &session->evlist->entries, node) { | |
1334 | ret += fprintf(fp, "%s stats:\n", event_name(pos)); | |
1335 | ret += hists__fprintf_nr_events(&pos->hists, fp); | |
1336 | } | |
1337 | ||
1338 | return ret; | |
1339 | } | |
c0230b2b | 1340 | |
b424eba2 ACM |
1341 | size_t perf_session__fprintf(struct perf_session *session, FILE *fp) |
1342 | { | |
1343 | /* | |
1344 | * FIXME: Here we have to actually print all the machines in this | |
1345 | * session, not just the host... | |
1346 | */ | |
1347 | return machine__fprintf(&session->host_machine, fp); | |
1348 | } | |
1349 | ||
1350 | void perf_session__remove_thread(struct perf_session *session, | |
1351 | struct thread *th) | |
1352 | { | |
1353 | /* | |
1354 | * FIXME: This one makes no sense, we need to remove the thread from | |
1355 | * the machine it belongs to, perf_session can have many machines, so | |
1356 | * doing it always on ->host_machine is wrong. Fix when auditing all | |
1357 | * the 'perf kvm' code. | |
1358 | */ | |
1359 | machine__remove_thread(&session->host_machine, th); | |
1360 | } | |
1361 | ||
9cbdb702 DA |
1362 | struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session, |
1363 | unsigned int type) | |
1364 | { | |
1365 | struct perf_evsel *pos; | |
1366 | ||
1367 | list_for_each_entry(pos, &session->evlist->entries, node) { | |
1368 | if (pos->attr.type == type) | |
1369 | return pos; | |
1370 | } | |
1371 | return NULL; | |
1372 | } | |
1373 | ||
743eb868 ACM |
1374 | void perf_event__print_ip(union perf_event *event, struct perf_sample *sample, |
1375 | struct machine *machine, struct perf_evsel *evsel, | |
a978f2ab | 1376 | int print_sym, int print_dso, int print_symoffset) |
c0230b2b DA |
1377 | { |
1378 | struct addr_location al; | |
246d4ce8 | 1379 | struct callchain_cursor *cursor = &evsel->hists.callchain_cursor; |
c0230b2b DA |
1380 | struct callchain_cursor_node *node; |
1381 | ||
743eb868 | 1382 | if (perf_event__preprocess_sample(event, machine, &al, sample, |
c0230b2b DA |
1383 | NULL) < 0) { |
1384 | error("problem processing %d event, skipping it.\n", | |
1385 | event->header.type); | |
1386 | return; | |
1387 | } | |
1388 | ||
1389 | if (symbol_conf.use_callchain && sample->callchain) { | |
1390 | ||
743eb868 | 1391 | if (machine__resolve_callchain(machine, evsel, al.thread, |
c0230b2b DA |
1392 | sample->callchain, NULL) != 0) { |
1393 | if (verbose) | |
1394 | error("Failed to resolve callchain. Skipping\n"); | |
1395 | return; | |
1396 | } | |
1397 | callchain_cursor_commit(cursor); | |
1398 | ||
1399 | while (1) { | |
1400 | node = callchain_cursor_current(cursor); | |
1401 | if (!node) | |
1402 | break; | |
1403 | ||
787bef17 DA |
1404 | printf("\t%16" PRIx64, node->ip); |
1405 | if (print_sym) { | |
547a92e0 AN |
1406 | printf(" "); |
1407 | symbol__fprintf_symname(node->sym, stdout); | |
610723f2 DA |
1408 | } |
1409 | if (print_dso) { | |
547a92e0 AN |
1410 | printf(" ("); |
1411 | map__fprintf_dsoname(al.map, stdout); | |
1412 | printf(")"); | |
787bef17 DA |
1413 | } |
1414 | printf("\n"); | |
c0230b2b DA |
1415 | |
1416 | callchain_cursor_advance(cursor); | |
1417 | } | |
1418 | ||
1419 | } else { | |
adc4bf99 | 1420 | printf("%16" PRIx64, sample->ip); |
787bef17 | 1421 | if (print_sym) { |
547a92e0 | 1422 | printf(" "); |
a978f2ab AN |
1423 | if (print_symoffset) |
1424 | symbol__fprintf_symname_offs(al.sym, &al, | |
1425 | stdout); | |
1426 | else | |
1427 | symbol__fprintf_symname(al.sym, stdout); | |
610723f2 DA |
1428 | } |
1429 | ||
1430 | if (print_dso) { | |
547a92e0 AN |
1431 | printf(" ("); |
1432 | map__fprintf_dsoname(al.map, stdout); | |
1433 | printf(")"); | |
787bef17 | 1434 | } |
c0230b2b DA |
1435 | } |
1436 | } | |
5d67be97 AB |
1437 | |
1438 | int perf_session__cpu_bitmap(struct perf_session *session, | |
1439 | const char *cpu_list, unsigned long *cpu_bitmap) | |
1440 | { | |
1441 | int i; | |
1442 | struct cpu_map *map; | |
1443 | ||
1444 | for (i = 0; i < PERF_TYPE_MAX; ++i) { | |
1445 | struct perf_evsel *evsel; | |
1446 | ||
1447 | evsel = perf_session__find_first_evtype(session, i); | |
1448 | if (!evsel) | |
1449 | continue; | |
1450 | ||
1451 | if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) { | |
1452 | pr_err("File does not contain CPU events. " | |
1453 | "Remove -c option to proceed.\n"); | |
1454 | return -1; | |
1455 | } | |
1456 | } | |
1457 | ||
1458 | map = cpu_map__new(cpu_list); | |
47fbe53b DA |
1459 | if (map == NULL) { |
1460 | pr_err("Invalid cpu_list\n"); | |
1461 | return -1; | |
1462 | } | |
5d67be97 AB |
1463 | |
1464 | for (i = 0; i < map->nr; i++) { | |
1465 | int cpu = map->map[i]; | |
1466 | ||
1467 | if (cpu >= MAX_NR_CPUS) { | |
1468 | pr_err("Requested CPU %d too large. " | |
1469 | "Consider raising MAX_NR_CPUS\n", cpu); | |
1470 | return -1; | |
1471 | } | |
1472 | ||
1473 | set_bit(cpu, cpu_bitmap); | |
1474 | } | |
1475 | ||
1476 | return 0; | |
1477 | } | |
fbe96f29 SE |
1478 | |
1479 | void perf_session__fprintf_info(struct perf_session *session, FILE *fp, | |
1480 | bool full) | |
1481 | { | |
1482 | struct stat st; | |
1483 | int ret; | |
1484 | ||
1485 | if (session == NULL || fp == NULL) | |
1486 | return; | |
1487 | ||
1488 | ret = fstat(session->fd, &st); | |
1489 | if (ret == -1) | |
1490 | return; | |
1491 | ||
1492 | fprintf(fp, "# ========\n"); | |
1493 | fprintf(fp, "# captured on: %s", ctime(&st.st_ctime)); | |
1494 | perf_header__fprintf_info(session, fp, full); | |
1495 | fprintf(fp, "# ========\n#\n"); | |
1496 | } |