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" |
da378962 | 17 | #include "event-parse.h" |
94c744b6 ACM |
18 | |
19 | static int perf_session__open(struct perf_session *self, bool force) | |
20 | { | |
21 | struct stat input_stat; | |
22 | ||
8dc58101 TZ |
23 | if (!strcmp(self->filename, "-")) { |
24 | self->fd_pipe = true; | |
25 | self->fd = STDIN_FILENO; | |
26 | ||
a91e5431 | 27 | if (perf_session__read_header(self, self->fd) < 0) |
69996df4 | 28 | pr_err("incompatible file format (rerun with -v to learn more)"); |
8dc58101 TZ |
29 | |
30 | return 0; | |
31 | } | |
32 | ||
f887f301 | 33 | self->fd = open(self->filename, O_RDONLY); |
94c744b6 | 34 | if (self->fd < 0) { |
0f2c3de2 AI |
35 | int err = errno; |
36 | ||
37 | pr_err("failed to open %s: %s", self->filename, strerror(err)); | |
38 | if (err == ENOENT && !strcmp(self->filename, "perf.data")) | |
94c744b6 ACM |
39 | pr_err(" (try 'perf record' first)"); |
40 | pr_err("\n"); | |
41 | return -errno; | |
42 | } | |
43 | ||
44 | if (fstat(self->fd, &input_stat) < 0) | |
45 | goto out_close; | |
46 | ||
47 | if (!force && input_stat.st_uid && (input_stat.st_uid != geteuid())) { | |
48 | pr_err("file %s not owned by current user or root\n", | |
49 | self->filename); | |
50 | goto out_close; | |
51 | } | |
52 | ||
53 | if (!input_stat.st_size) { | |
54 | pr_info("zero-sized file (%s), nothing to do!\n", | |
55 | self->filename); | |
56 | goto out_close; | |
57 | } | |
58 | ||
a91e5431 | 59 | if (perf_session__read_header(self, self->fd) < 0) { |
69996df4 | 60 | pr_err("incompatible file format (rerun with -v to learn more)"); |
94c744b6 ACM |
61 | goto out_close; |
62 | } | |
63 | ||
c2a70653 ACM |
64 | if (!perf_evlist__valid_sample_type(self->evlist)) { |
65 | pr_err("non matching sample_type"); | |
66 | goto out_close; | |
67 | } | |
68 | ||
69 | if (!perf_evlist__valid_sample_id_all(self->evlist)) { | |
70 | pr_err("non matching sample_id_all"); | |
71 | goto out_close; | |
72 | } | |
73 | ||
94c744b6 ACM |
74 | self->size = input_stat.st_size; |
75 | return 0; | |
76 | ||
77 | out_close: | |
78 | close(self->fd); | |
79 | self->fd = -1; | |
80 | return -1; | |
81 | } | |
82 | ||
9c90a61c ACM |
83 | void perf_session__update_sample_type(struct perf_session *self) |
84 | { | |
a91e5431 | 85 | self->sample_type = perf_evlist__sample_type(self->evlist); |
c2a70653 | 86 | self->sample_size = __perf_evsel__sample_size(self->sample_type); |
a91e5431 | 87 | self->sample_id_all = perf_evlist__sample_id_all(self->evlist); |
81e36bff | 88 | self->id_hdr_size = perf_evlist__id_hdr_size(self->evlist); |
743eb868 | 89 | self->host_machine.id_hdr_size = self->id_hdr_size; |
9c90a61c ACM |
90 | } |
91 | ||
a1645ce1 ZY |
92 | int perf_session__create_kernel_maps(struct perf_session *self) |
93 | { | |
d118f8ba | 94 | int ret = machine__create_kernel_maps(&self->host_machine); |
a1645ce1 | 95 | |
a1645ce1 | 96 | if (ret >= 0) |
d118f8ba | 97 | ret = machines__create_guest_kernel_maps(&self->machines); |
a1645ce1 ZY |
98 | return ret; |
99 | } | |
100 | ||
076c6e45 ACM |
101 | static void perf_session__destroy_kernel_maps(struct perf_session *self) |
102 | { | |
103 | machine__destroy_kernel_maps(&self->host_machine); | |
104 | machines__destroy_guest_kernel_maps(&self->machines); | |
105 | } | |
106 | ||
21ef97f0 IM |
107 | struct perf_session *perf_session__new(const char *filename, int mode, |
108 | bool force, bool repipe, | |
45694aa7 | 109 | struct perf_tool *tool) |
94c744b6 | 110 | { |
efad1415 RR |
111 | struct perf_session *self; |
112 | struct stat st; | |
113 | size_t len; | |
114 | ||
115 | if (!filename || !strlen(filename)) { | |
116 | if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode)) | |
117 | filename = "-"; | |
118 | else | |
119 | filename = "perf.data"; | |
120 | } | |
121 | ||
122 | len = strlen(filename); | |
123 | self = zalloc(sizeof(*self) + len); | |
94c744b6 ACM |
124 | |
125 | if (self == NULL) | |
126 | goto out; | |
127 | ||
94c744b6 | 128 | memcpy(self->filename, filename, len); |
55b44629 TG |
129 | /* |
130 | * On 64bit we can mmap the data file in one go. No need for tiny mmap | |
131 | * slices. On 32bit we use 32MB. | |
132 | */ | |
133 | #if BITS_PER_LONG == 64 | |
134 | self->mmap_window = ULLONG_MAX; | |
135 | #else | |
136 | self->mmap_window = 32 * 1024 * 1024ULL; | |
137 | #endif | |
23346f21 | 138 | self->machines = RB_ROOT; |
454c407e | 139 | self->repipe = repipe; |
a1225dec | 140 | INIT_LIST_HEAD(&self->ordered_samples.samples); |
020bb75a | 141 | INIT_LIST_HEAD(&self->ordered_samples.sample_cache); |
5c891f38 | 142 | INIT_LIST_HEAD(&self->ordered_samples.to_free); |
1f626bc3 | 143 | machine__init(&self->host_machine, "", HOST_KERNEL_ID); |
4bf9ce1b | 144 | hists__init(&self->hists); |
94c744b6 | 145 | |
64abebf7 ACM |
146 | if (mode == O_RDONLY) { |
147 | if (perf_session__open(self, force) < 0) | |
148 | goto out_delete; | |
a91e5431 | 149 | perf_session__update_sample_type(self); |
64abebf7 ACM |
150 | } else if (mode == O_WRONLY) { |
151 | /* | |
152 | * In O_RDONLY mode this will be performed when reading the | |
8115d60c | 153 | * kernel MMAP event, in perf_event__process_mmap(). |
64abebf7 ACM |
154 | */ |
155 | if (perf_session__create_kernel_maps(self) < 0) | |
156 | goto out_delete; | |
157 | } | |
d549c769 | 158 | |
45694aa7 ACM |
159 | if (tool && tool->ordering_requires_timestamps && |
160 | tool->ordered_samples && !self->sample_id_all) { | |
21ef97f0 | 161 | dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n"); |
45694aa7 | 162 | tool->ordered_samples = false; |
21ef97f0 IM |
163 | } |
164 | ||
94c744b6 ACM |
165 | out: |
166 | return self; | |
4aa65636 ACM |
167 | out_delete: |
168 | perf_session__delete(self); | |
169 | return NULL; | |
94c744b6 ACM |
170 | } |
171 | ||
b424eba2 | 172 | static void machine__delete_dead_threads(struct machine *machine) |
d65a458b ACM |
173 | { |
174 | struct thread *n, *t; | |
175 | ||
b424eba2 | 176 | list_for_each_entry_safe(t, n, &machine->dead_threads, node) { |
d65a458b ACM |
177 | list_del(&t->node); |
178 | thread__delete(t); | |
179 | } | |
180 | } | |
181 | ||
b424eba2 ACM |
182 | static void perf_session__delete_dead_threads(struct perf_session *session) |
183 | { | |
184 | machine__delete_dead_threads(&session->host_machine); | |
185 | } | |
186 | ||
187 | static void machine__delete_threads(struct machine *self) | |
d65a458b ACM |
188 | { |
189 | struct rb_node *nd = rb_first(&self->threads); | |
190 | ||
191 | while (nd) { | |
192 | struct thread *t = rb_entry(nd, struct thread, rb_node); | |
193 | ||
194 | rb_erase(&t->rb_node, &self->threads); | |
195 | nd = rb_next(nd); | |
196 | thread__delete(t); | |
197 | } | |
198 | } | |
199 | ||
b424eba2 ACM |
200 | static void perf_session__delete_threads(struct perf_session *session) |
201 | { | |
202 | machine__delete_threads(&session->host_machine); | |
203 | } | |
204 | ||
94c744b6 ACM |
205 | void perf_session__delete(struct perf_session *self) |
206 | { | |
076c6e45 | 207 | perf_session__destroy_kernel_maps(self); |
d65a458b ACM |
208 | perf_session__delete_dead_threads(self); |
209 | perf_session__delete_threads(self); | |
210 | machine__exit(&self->host_machine); | |
94c744b6 ACM |
211 | close(self->fd); |
212 | free(self); | |
213 | } | |
a328626b | 214 | |
b424eba2 | 215 | void machine__remove_thread(struct machine *self, struct thread *th) |
720a3aeb | 216 | { |
70597f21 | 217 | self->last_match = NULL; |
720a3aeb ACM |
218 | rb_erase(&th->rb_node, &self->threads); |
219 | /* | |
220 | * We may have references to this thread, for instance in some hist_entry | |
221 | * instances, so just move them to a separate list. | |
222 | */ | |
223 | list_add_tail(&th->node, &self->dead_threads); | |
224 | } | |
225 | ||
a328626b ACM |
226 | static bool symbol__match_parent_regex(struct symbol *sym) |
227 | { | |
228 | if (sym->name && !regexec(&parent_regex, sym->name, 0, NULL, 0)) | |
229 | return 1; | |
230 | ||
231 | return 0; | |
232 | } | |
233 | ||
b5387528 RAV |
234 | static const u8 cpumodes[] = { |
235 | PERF_RECORD_MISC_USER, | |
236 | PERF_RECORD_MISC_KERNEL, | |
237 | PERF_RECORD_MISC_GUEST_USER, | |
238 | PERF_RECORD_MISC_GUEST_KERNEL | |
239 | }; | |
240 | #define NCPUMODES (sizeof(cpumodes)/sizeof(u8)) | |
241 | ||
242 | static void ip__resolve_ams(struct machine *self, struct thread *thread, | |
243 | struct addr_map_symbol *ams, | |
244 | u64 ip) | |
245 | { | |
246 | struct addr_location al; | |
247 | size_t i; | |
248 | u8 m; | |
249 | ||
250 | memset(&al, 0, sizeof(al)); | |
251 | ||
252 | for (i = 0; i < NCPUMODES; i++) { | |
253 | m = cpumodes[i]; | |
254 | /* | |
255 | * We cannot use the header.misc hint to determine whether a | |
256 | * branch stack address is user, kernel, guest, hypervisor. | |
257 | * Branches may straddle the kernel/user/hypervisor boundaries. | |
258 | * Thus, we have to try consecutively until we find a match | |
259 | * or else, the symbol is unknown | |
260 | */ | |
261 | thread__find_addr_location(thread, self, m, MAP__FUNCTION, | |
262 | ip, &al, NULL); | |
263 | if (al.sym) | |
264 | goto found; | |
265 | } | |
266 | found: | |
267 | ams->addr = ip; | |
a68c2c58 | 268 | ams->al_addr = al.addr; |
b5387528 RAV |
269 | ams->sym = al.sym; |
270 | ams->map = al.map; | |
271 | } | |
272 | ||
273 | struct branch_info *machine__resolve_bstack(struct machine *self, | |
274 | struct thread *thr, | |
275 | struct branch_stack *bs) | |
276 | { | |
277 | struct branch_info *bi; | |
278 | unsigned int i; | |
279 | ||
280 | bi = calloc(bs->nr, sizeof(struct branch_info)); | |
281 | if (!bi) | |
282 | return NULL; | |
283 | ||
284 | for (i = 0; i < bs->nr; i++) { | |
285 | ip__resolve_ams(self, thr, &bi[i].to, bs->entries[i].to); | |
286 | ip__resolve_ams(self, thr, &bi[i].from, bs->entries[i].from); | |
287 | bi[i].flags = bs->entries[i].flags; | |
288 | } | |
289 | return bi; | |
290 | } | |
291 | ||
47260645 | 292 | int machine__resolve_callchain(struct machine *self, |
743eb868 ACM |
293 | struct thread *thread, |
294 | struct ip_callchain *chain, | |
295 | struct symbol **parent) | |
a328626b ACM |
296 | { |
297 | u8 cpumode = PERF_RECORD_MISC_USER; | |
a328626b | 298 | unsigned int i; |
1b3a0e95 | 299 | int err; |
a328626b | 300 | |
47260645 | 301 | callchain_cursor_reset(&callchain_cursor); |
a328626b | 302 | |
114067b6 NK |
303 | if (chain->nr > PERF_MAX_STACK_DEPTH) { |
304 | pr_warning("corrupted callchain. skipping...\n"); | |
305 | return 0; | |
306 | } | |
307 | ||
a328626b | 308 | for (i = 0; i < chain->nr; i++) { |
d797fdc5 | 309 | u64 ip; |
a328626b ACM |
310 | struct addr_location al; |
311 | ||
d797fdc5 SL |
312 | if (callchain_param.order == ORDER_CALLEE) |
313 | ip = chain->ips[i]; | |
314 | else | |
315 | ip = chain->ips[chain->nr - i - 1]; | |
316 | ||
a328626b ACM |
317 | if (ip >= PERF_CONTEXT_MAX) { |
318 | switch (ip) { | |
319 | case PERF_CONTEXT_HV: | |
320 | cpumode = PERF_RECORD_MISC_HYPERVISOR; break; | |
321 | case PERF_CONTEXT_KERNEL: | |
322 | cpumode = PERF_RECORD_MISC_KERNEL; break; | |
323 | case PERF_CONTEXT_USER: | |
324 | cpumode = PERF_RECORD_MISC_USER; break; | |
325 | default: | |
114067b6 NK |
326 | pr_debug("invalid callchain context: " |
327 | "%"PRId64"\n", (s64) ip); | |
328 | /* | |
329 | * It seems the callchain is corrupted. | |
330 | * Discard all. | |
331 | */ | |
332 | callchain_cursor_reset(&callchain_cursor); | |
333 | return 0; | |
a328626b ACM |
334 | } |
335 | continue; | |
336 | } | |
337 | ||
a1645ce1 | 338 | al.filtered = false; |
a328626b | 339 | thread__find_addr_location(thread, self, cpumode, |
743eb868 | 340 | MAP__FUNCTION, ip, &al, NULL); |
a328626b ACM |
341 | if (al.sym != NULL) { |
342 | if (sort__has_parent && !*parent && | |
343 | symbol__match_parent_regex(al.sym)) | |
344 | *parent = al.sym; | |
d599db3f | 345 | if (!symbol_conf.use_callchain) |
a328626b | 346 | break; |
a328626b | 347 | } |
1b3a0e95 | 348 | |
47260645 | 349 | err = callchain_cursor_append(&callchain_cursor, |
1b3a0e95 FW |
350 | ip, al.map, al.sym); |
351 | if (err) | |
352 | return err; | |
a328626b ACM |
353 | } |
354 | ||
1b3a0e95 | 355 | return 0; |
a328626b | 356 | } |
06aae590 | 357 | |
d20deb64 ACM |
358 | static int process_event_synth_tracing_data_stub(union perf_event *event __used, |
359 | struct perf_session *session __used) | |
360 | { | |
361 | dump_printf(": unhandled!\n"); | |
362 | return 0; | |
363 | } | |
364 | ||
10d0f086 ACM |
365 | static int process_event_synth_attr_stub(union perf_event *event __used, |
366 | struct perf_evlist **pevlist __used) | |
367 | { | |
368 | dump_printf(": unhandled!\n"); | |
369 | return 0; | |
370 | } | |
371 | ||
45694aa7 | 372 | static int process_event_sample_stub(struct perf_tool *tool __used, |
d20deb64 | 373 | union perf_event *event __used, |
9e69c210 ACM |
374 | struct perf_sample *sample __used, |
375 | struct perf_evsel *evsel __used, | |
743eb868 | 376 | struct machine *machine __used) |
9e69c210 ACM |
377 | { |
378 | dump_printf(": unhandled!\n"); | |
379 | return 0; | |
380 | } | |
381 | ||
45694aa7 | 382 | static int process_event_stub(struct perf_tool *tool __used, |
d20deb64 | 383 | union perf_event *event __used, |
8d50e5b4 | 384 | struct perf_sample *sample __used, |
743eb868 | 385 | struct machine *machine __used) |
06aae590 ACM |
386 | { |
387 | dump_printf(": unhandled!\n"); | |
388 | return 0; | |
389 | } | |
390 | ||
45694aa7 | 391 | static int process_finished_round_stub(struct perf_tool *tool __used, |
d20deb64 | 392 | union perf_event *event __used, |
743eb868 ACM |
393 | struct perf_session *perf_session __used) |
394 | { | |
395 | dump_printf(": unhandled!\n"); | |
396 | return 0; | |
397 | } | |
398 | ||
45694aa7 | 399 | static int process_event_type_stub(struct perf_tool *tool __used, |
743eb868 | 400 | union perf_event *event __used) |
d6b17beb FW |
401 | { |
402 | dump_printf(": unhandled!\n"); | |
403 | return 0; | |
404 | } | |
405 | ||
45694aa7 | 406 | static int process_finished_round(struct perf_tool *tool, |
d20deb64 ACM |
407 | union perf_event *event, |
408 | struct perf_session *session); | |
d6b17beb | 409 | |
45694aa7 | 410 | static void perf_tool__fill_defaults(struct perf_tool *tool) |
06aae590 | 411 | { |
45694aa7 ACM |
412 | if (tool->sample == NULL) |
413 | tool->sample = process_event_sample_stub; | |
414 | if (tool->mmap == NULL) | |
415 | tool->mmap = process_event_stub; | |
416 | if (tool->comm == NULL) | |
417 | tool->comm = process_event_stub; | |
418 | if (tool->fork == NULL) | |
419 | tool->fork = process_event_stub; | |
420 | if (tool->exit == NULL) | |
421 | tool->exit = process_event_stub; | |
422 | if (tool->lost == NULL) | |
423 | tool->lost = perf_event__process_lost; | |
424 | if (tool->read == NULL) | |
425 | tool->read = process_event_sample_stub; | |
426 | if (tool->throttle == NULL) | |
427 | tool->throttle = process_event_stub; | |
428 | if (tool->unthrottle == NULL) | |
429 | tool->unthrottle = process_event_stub; | |
430 | if (tool->attr == NULL) | |
431 | tool->attr = process_event_synth_attr_stub; | |
432 | if (tool->event_type == NULL) | |
433 | tool->event_type = process_event_type_stub; | |
434 | if (tool->tracing_data == NULL) | |
435 | tool->tracing_data = process_event_synth_tracing_data_stub; | |
436 | if (tool->build_id == NULL) | |
437 | tool->build_id = process_finished_round_stub; | |
438 | if (tool->finished_round == NULL) { | |
439 | if (tool->ordered_samples) | |
440 | tool->finished_round = process_finished_round; | |
d6b17beb | 441 | else |
45694aa7 | 442 | tool->finished_round = process_finished_round_stub; |
d6b17beb | 443 | } |
06aae590 | 444 | } |
80c0120a DA |
445 | |
446 | void mem_bswap_32(void *src, int byte_size) | |
447 | { | |
448 | u32 *m = src; | |
449 | while (byte_size > 0) { | |
450 | *m = bswap_32(*m); | |
451 | byte_size -= sizeof(u32); | |
452 | ++m; | |
453 | } | |
454 | } | |
06aae590 | 455 | |
ba21594c ACM |
456 | void mem_bswap_64(void *src, int byte_size) |
457 | { | |
458 | u64 *m = src; | |
459 | ||
460 | while (byte_size > 0) { | |
461 | *m = bswap_64(*m); | |
462 | byte_size -= sizeof(u64); | |
463 | ++m; | |
464 | } | |
465 | } | |
466 | ||
268fb20f JO |
467 | static void swap_sample_id_all(union perf_event *event, void *data) |
468 | { | |
469 | void *end = (void *) event + event->header.size; | |
470 | int size = end - data; | |
471 | ||
472 | BUG_ON(size % sizeof(u64)); | |
473 | mem_bswap_64(data, size); | |
474 | } | |
475 | ||
476 | static void perf_event__all64_swap(union perf_event *event, | |
477 | bool sample_id_all __used) | |
ba21594c | 478 | { |
8115d60c ACM |
479 | struct perf_event_header *hdr = &event->header; |
480 | mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr)); | |
ba21594c ACM |
481 | } |
482 | ||
268fb20f | 483 | static void perf_event__comm_swap(union perf_event *event, bool sample_id_all) |
ba21594c | 484 | { |
8115d60c ACM |
485 | event->comm.pid = bswap_32(event->comm.pid); |
486 | event->comm.tid = bswap_32(event->comm.tid); | |
268fb20f JO |
487 | |
488 | if (sample_id_all) { | |
489 | void *data = &event->comm.comm; | |
490 | ||
491 | data += ALIGN(strlen(data) + 1, sizeof(u64)); | |
492 | swap_sample_id_all(event, data); | |
493 | } | |
ba21594c ACM |
494 | } |
495 | ||
268fb20f JO |
496 | static void perf_event__mmap_swap(union perf_event *event, |
497 | bool sample_id_all) | |
ba21594c | 498 | { |
8115d60c ACM |
499 | event->mmap.pid = bswap_32(event->mmap.pid); |
500 | event->mmap.tid = bswap_32(event->mmap.tid); | |
501 | event->mmap.start = bswap_64(event->mmap.start); | |
502 | event->mmap.len = bswap_64(event->mmap.len); | |
503 | event->mmap.pgoff = bswap_64(event->mmap.pgoff); | |
268fb20f JO |
504 | |
505 | if (sample_id_all) { | |
506 | void *data = &event->mmap.filename; | |
507 | ||
508 | data += ALIGN(strlen(data) + 1, sizeof(u64)); | |
509 | swap_sample_id_all(event, data); | |
510 | } | |
ba21594c ACM |
511 | } |
512 | ||
268fb20f | 513 | static void perf_event__task_swap(union perf_event *event, bool sample_id_all) |
ba21594c | 514 | { |
8115d60c ACM |
515 | event->fork.pid = bswap_32(event->fork.pid); |
516 | event->fork.tid = bswap_32(event->fork.tid); | |
517 | event->fork.ppid = bswap_32(event->fork.ppid); | |
518 | event->fork.ptid = bswap_32(event->fork.ptid); | |
519 | event->fork.time = bswap_64(event->fork.time); | |
268fb20f JO |
520 | |
521 | if (sample_id_all) | |
522 | swap_sample_id_all(event, &event->fork + 1); | |
ba21594c ACM |
523 | } |
524 | ||
268fb20f | 525 | static void perf_event__read_swap(union perf_event *event, bool sample_id_all) |
ba21594c | 526 | { |
8115d60c ACM |
527 | event->read.pid = bswap_32(event->read.pid); |
528 | event->read.tid = bswap_32(event->read.tid); | |
529 | event->read.value = bswap_64(event->read.value); | |
530 | event->read.time_enabled = bswap_64(event->read.time_enabled); | |
531 | event->read.time_running = bswap_64(event->read.time_running); | |
532 | event->read.id = bswap_64(event->read.id); | |
268fb20f JO |
533 | |
534 | if (sample_id_all) | |
535 | swap_sample_id_all(event, &event->read + 1); | |
ba21594c ACM |
536 | } |
537 | ||
e108c66e JO |
538 | static u8 revbyte(u8 b) |
539 | { | |
540 | int rev = (b >> 4) | ((b & 0xf) << 4); | |
541 | rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2); | |
542 | rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1); | |
543 | return (u8) rev; | |
544 | } | |
545 | ||
546 | /* | |
547 | * XXX this is hack in attempt to carry flags bitfield | |
548 | * throught endian village. ABI says: | |
549 | * | |
550 | * Bit-fields are allocated from right to left (least to most significant) | |
551 | * on little-endian implementations and from left to right (most to least | |
552 | * significant) on big-endian implementations. | |
553 | * | |
554 | * The above seems to be byte specific, so we need to reverse each | |
555 | * byte of the bitfield. 'Internet' also says this might be implementation | |
556 | * specific and we probably need proper fix and carry perf_event_attr | |
557 | * bitfield flags in separate data file FEAT_ section. Thought this seems | |
558 | * to work for now. | |
559 | */ | |
560 | static void swap_bitfield(u8 *p, unsigned len) | |
561 | { | |
562 | unsigned i; | |
563 | ||
564 | for (i = 0; i < len; i++) { | |
565 | *p = revbyte(*p); | |
566 | p++; | |
567 | } | |
568 | } | |
569 | ||
eda3913b DA |
570 | /* exported for swapping attributes in file header */ |
571 | void perf_event__attr_swap(struct perf_event_attr *attr) | |
572 | { | |
573 | attr->type = bswap_32(attr->type); | |
574 | attr->size = bswap_32(attr->size); | |
575 | attr->config = bswap_64(attr->config); | |
576 | attr->sample_period = bswap_64(attr->sample_period); | |
577 | attr->sample_type = bswap_64(attr->sample_type); | |
578 | attr->read_format = bswap_64(attr->read_format); | |
579 | attr->wakeup_events = bswap_32(attr->wakeup_events); | |
580 | attr->bp_type = bswap_32(attr->bp_type); | |
581 | attr->bp_addr = bswap_64(attr->bp_addr); | |
582 | attr->bp_len = bswap_64(attr->bp_len); | |
e108c66e JO |
583 | |
584 | swap_bitfield((u8 *) (&attr->read_format + 1), sizeof(u64)); | |
eda3913b DA |
585 | } |
586 | ||
268fb20f JO |
587 | static void perf_event__hdr_attr_swap(union perf_event *event, |
588 | bool sample_id_all __used) | |
2c46dbb5 TZ |
589 | { |
590 | size_t size; | |
591 | ||
eda3913b | 592 | perf_event__attr_swap(&event->attr.attr); |
2c46dbb5 | 593 | |
8115d60c ACM |
594 | size = event->header.size; |
595 | size -= (void *)&event->attr.id - (void *)event; | |
596 | mem_bswap_64(event->attr.id, size); | |
2c46dbb5 TZ |
597 | } |
598 | ||
268fb20f JO |
599 | static void perf_event__event_type_swap(union perf_event *event, |
600 | bool sample_id_all __used) | |
cd19a035 | 601 | { |
8115d60c ACM |
602 | event->event_type.event_type.event_id = |
603 | bswap_64(event->event_type.event_type.event_id); | |
cd19a035 TZ |
604 | } |
605 | ||
268fb20f JO |
606 | static void perf_event__tracing_data_swap(union perf_event *event, |
607 | bool sample_id_all __used) | |
9215545e | 608 | { |
8115d60c | 609 | event->tracing_data.size = bswap_32(event->tracing_data.size); |
9215545e TZ |
610 | } |
611 | ||
268fb20f JO |
612 | typedef void (*perf_event__swap_op)(union perf_event *event, |
613 | bool sample_id_all); | |
ba21594c | 614 | |
8115d60c ACM |
615 | static perf_event__swap_op perf_event__swap_ops[] = { |
616 | [PERF_RECORD_MMAP] = perf_event__mmap_swap, | |
617 | [PERF_RECORD_COMM] = perf_event__comm_swap, | |
618 | [PERF_RECORD_FORK] = perf_event__task_swap, | |
619 | [PERF_RECORD_EXIT] = perf_event__task_swap, | |
620 | [PERF_RECORD_LOST] = perf_event__all64_swap, | |
621 | [PERF_RECORD_READ] = perf_event__read_swap, | |
622 | [PERF_RECORD_SAMPLE] = perf_event__all64_swap, | |
eda3913b | 623 | [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap, |
8115d60c ACM |
624 | [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap, |
625 | [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap, | |
626 | [PERF_RECORD_HEADER_BUILD_ID] = NULL, | |
627 | [PERF_RECORD_HEADER_MAX] = NULL, | |
ba21594c ACM |
628 | }; |
629 | ||
c61e52ee FW |
630 | struct sample_queue { |
631 | u64 timestamp; | |
e4c2df13 | 632 | u64 file_offset; |
8115d60c | 633 | union perf_event *event; |
c61e52ee FW |
634 | struct list_head list; |
635 | }; | |
636 | ||
020bb75a TG |
637 | static void perf_session_free_sample_buffers(struct perf_session *session) |
638 | { | |
639 | struct ordered_samples *os = &session->ordered_samples; | |
640 | ||
5c891f38 | 641 | while (!list_empty(&os->to_free)) { |
020bb75a TG |
642 | struct sample_queue *sq; |
643 | ||
5c891f38 | 644 | sq = list_entry(os->to_free.next, struct sample_queue, list); |
020bb75a TG |
645 | list_del(&sq->list); |
646 | free(sq); | |
647 | } | |
648 | } | |
649 | ||
cbf41645 | 650 | static int perf_session_deliver_event(struct perf_session *session, |
8115d60c | 651 | union perf_event *event, |
8d50e5b4 | 652 | struct perf_sample *sample, |
45694aa7 | 653 | struct perf_tool *tool, |
f74725dc | 654 | u64 file_offset); |
cbf41645 | 655 | |
c61e52ee | 656 | static void flush_sample_queue(struct perf_session *s, |
45694aa7 | 657 | struct perf_tool *tool) |
c61e52ee | 658 | { |
a1225dec TG |
659 | struct ordered_samples *os = &s->ordered_samples; |
660 | struct list_head *head = &os->samples; | |
c61e52ee | 661 | struct sample_queue *tmp, *iter; |
8d50e5b4 | 662 | struct perf_sample sample; |
a1225dec TG |
663 | u64 limit = os->next_flush; |
664 | u64 last_ts = os->last_sample ? os->last_sample->timestamp : 0ULL; | |
88660563 | 665 | unsigned idx = 0, progress_next = os->nr_samples / 16; |
5538beca | 666 | int ret; |
c61e52ee | 667 | |
45694aa7 | 668 | if (!tool->ordered_samples || !limit) |
c61e52ee FW |
669 | return; |
670 | ||
671 | list_for_each_entry_safe(iter, tmp, head, list) { | |
672 | if (iter->timestamp > limit) | |
a1225dec | 673 | break; |
c61e52ee | 674 | |
5538beca FW |
675 | ret = perf_session__parse_sample(s, iter->event, &sample); |
676 | if (ret) | |
677 | pr_err("Can't parse sample, err = %d\n", ret); | |
678 | else | |
45694aa7 | 679 | perf_session_deliver_event(s, iter->event, &sample, tool, |
5538beca | 680 | iter->file_offset); |
c61e52ee | 681 | |
a1225dec | 682 | os->last_flush = iter->timestamp; |
c61e52ee | 683 | list_del(&iter->list); |
020bb75a | 684 | list_add(&iter->list, &os->sample_cache); |
88660563 ACM |
685 | if (++idx >= progress_next) { |
686 | progress_next += os->nr_samples / 16; | |
687 | ui_progress__update(idx, os->nr_samples, | |
688 | "Processing time ordered events..."); | |
689 | } | |
c61e52ee | 690 | } |
a1225dec TG |
691 | |
692 | if (list_empty(head)) { | |
693 | os->last_sample = NULL; | |
694 | } else if (last_ts <= limit) { | |
695 | os->last_sample = | |
696 | list_entry(head->prev, struct sample_queue, list); | |
697 | } | |
88660563 ACM |
698 | |
699 | os->nr_samples = 0; | |
c61e52ee FW |
700 | } |
701 | ||
d6b17beb FW |
702 | /* |
703 | * When perf record finishes a pass on every buffers, it records this pseudo | |
704 | * event. | |
705 | * We record the max timestamp t found in the pass n. | |
706 | * Assuming these timestamps are monotonic across cpus, we know that if | |
707 | * a buffer still has events with timestamps below t, they will be all | |
708 | * available and then read in the pass n + 1. | |
709 | * Hence when we start to read the pass n + 2, we can safely flush every | |
710 | * events with timestamps below t. | |
711 | * | |
712 | * ============ PASS n ================= | |
713 | * CPU 0 | CPU 1 | |
714 | * | | |
715 | * cnt1 timestamps | cnt2 timestamps | |
716 | * 1 | 2 | |
717 | * 2 | 3 | |
718 | * - | 4 <--- max recorded | |
719 | * | |
720 | * ============ PASS n + 1 ============== | |
721 | * CPU 0 | CPU 1 | |
722 | * | | |
723 | * cnt1 timestamps | cnt2 timestamps | |
724 | * 3 | 5 | |
725 | * 4 | 6 | |
726 | * 5 | 7 <---- max recorded | |
727 | * | |
728 | * Flush every events below timestamp 4 | |
729 | * | |
730 | * ============ PASS n + 2 ============== | |
731 | * CPU 0 | CPU 1 | |
732 | * | | |
733 | * cnt1 timestamps | cnt2 timestamps | |
734 | * 6 | 8 | |
735 | * 7 | 9 | |
736 | * - | 10 | |
737 | * | |
738 | * Flush every events below timestamp 7 | |
739 | * etc... | |
740 | */ | |
45694aa7 | 741 | static int process_finished_round(struct perf_tool *tool, |
d20deb64 ACM |
742 | union perf_event *event __used, |
743 | struct perf_session *session) | |
d6b17beb | 744 | { |
45694aa7 | 745 | flush_sample_queue(session, tool); |
d6b17beb FW |
746 | session->ordered_samples.next_flush = session->ordered_samples.max_timestamp; |
747 | ||
748 | return 0; | |
749 | } | |
750 | ||
c61e52ee | 751 | /* The queue is ordered by time */ |
cbf41645 | 752 | static void __queue_event(struct sample_queue *new, struct perf_session *s) |
c61e52ee | 753 | { |
a1225dec TG |
754 | struct ordered_samples *os = &s->ordered_samples; |
755 | struct sample_queue *sample = os->last_sample; | |
756 | u64 timestamp = new->timestamp; | |
757 | struct list_head *p; | |
c61e52ee | 758 | |
88660563 | 759 | ++os->nr_samples; |
a1225dec | 760 | os->last_sample = new; |
c61e52ee | 761 | |
a1225dec TG |
762 | if (!sample) { |
763 | list_add(&new->list, &os->samples); | |
764 | os->max_timestamp = timestamp; | |
c61e52ee FW |
765 | return; |
766 | } | |
767 | ||
768 | /* | |
a1225dec TG |
769 | * last_sample might point to some random place in the list as it's |
770 | * the last queued event. We expect that the new event is close to | |
771 | * this. | |
c61e52ee | 772 | */ |
a1225dec TG |
773 | if (sample->timestamp <= timestamp) { |
774 | while (sample->timestamp <= timestamp) { | |
775 | p = sample->list.next; | |
776 | if (p == &os->samples) { | |
777 | list_add_tail(&new->list, &os->samples); | |
778 | os->max_timestamp = timestamp; | |
779 | return; | |
780 | } | |
781 | sample = list_entry(p, struct sample_queue, list); | |
782 | } | |
783 | list_add_tail(&new->list, &sample->list); | |
784 | } else { | |
785 | while (sample->timestamp > timestamp) { | |
786 | p = sample->list.prev; | |
787 | if (p == &os->samples) { | |
788 | list_add(&new->list, &os->samples); | |
789 | return; | |
790 | } | |
791 | sample = list_entry(p, struct sample_queue, list); | |
792 | } | |
793 | list_add(&new->list, &sample->list); | |
794 | } | |
c61e52ee FW |
795 | } |
796 | ||
5c891f38 TG |
797 | #define MAX_SAMPLE_BUFFER (64 * 1024 / sizeof(struct sample_queue)) |
798 | ||
8115d60c | 799 | static int perf_session_queue_event(struct perf_session *s, union perf_event *event, |
8d50e5b4 | 800 | struct perf_sample *sample, u64 file_offset) |
c61e52ee | 801 | { |
5c891f38 TG |
802 | struct ordered_samples *os = &s->ordered_samples; |
803 | struct list_head *sc = &os->sample_cache; | |
8d50e5b4 | 804 | u64 timestamp = sample->time; |
c61e52ee | 805 | struct sample_queue *new; |
c61e52ee | 806 | |
79a14c1f | 807 | if (!timestamp || timestamp == ~0ULL) |
cbf41645 TG |
808 | return -ETIME; |
809 | ||
c61e52ee FW |
810 | if (timestamp < s->ordered_samples.last_flush) { |
811 | printf("Warning: Timestamp below last timeslice flush\n"); | |
812 | return -EINVAL; | |
813 | } | |
814 | ||
020bb75a TG |
815 | if (!list_empty(sc)) { |
816 | new = list_entry(sc->next, struct sample_queue, list); | |
817 | list_del(&new->list); | |
5c891f38 TG |
818 | } else if (os->sample_buffer) { |
819 | new = os->sample_buffer + os->sample_buffer_idx; | |
820 | if (++os->sample_buffer_idx == MAX_SAMPLE_BUFFER) | |
821 | os->sample_buffer = NULL; | |
020bb75a | 822 | } else { |
5c891f38 TG |
823 | os->sample_buffer = malloc(MAX_SAMPLE_BUFFER * sizeof(*new)); |
824 | if (!os->sample_buffer) | |
020bb75a | 825 | return -ENOMEM; |
5c891f38 TG |
826 | list_add(&os->sample_buffer->list, &os->to_free); |
827 | os->sample_buffer_idx = 2; | |
828 | new = os->sample_buffer + 1; | |
020bb75a | 829 | } |
c61e52ee FW |
830 | |
831 | new->timestamp = timestamp; | |
e4c2df13 | 832 | new->file_offset = file_offset; |
fe174207 | 833 | new->event = event; |
c61e52ee | 834 | |
cbf41645 | 835 | __queue_event(new, s); |
640c03ce | 836 | |
640c03ce ACM |
837 | return 0; |
838 | } | |
c61e52ee | 839 | |
8d50e5b4 | 840 | static void callchain__printf(struct perf_sample *sample) |
640c03ce ACM |
841 | { |
842 | unsigned int i; | |
c61e52ee | 843 | |
9486aa38 | 844 | printf("... chain: nr:%" PRIu64 "\n", sample->callchain->nr); |
640c03ce ACM |
845 | |
846 | for (i = 0; i < sample->callchain->nr; i++) | |
9486aa38 ACM |
847 | printf("..... %2d: %016" PRIx64 "\n", |
848 | i, sample->callchain->ips[i]); | |
c61e52ee FW |
849 | } |
850 | ||
b5387528 RAV |
851 | static void branch_stack__printf(struct perf_sample *sample) |
852 | { | |
853 | uint64_t i; | |
854 | ||
855 | printf("... branch stack: nr:%" PRIu64 "\n", sample->branch_stack->nr); | |
856 | ||
857 | for (i = 0; i < sample->branch_stack->nr; i++) | |
858 | printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 "\n", | |
859 | i, sample->branch_stack->entries[i].from, | |
860 | sample->branch_stack->entries[i].to); | |
861 | } | |
862 | ||
9c90a61c | 863 | static void perf_session__print_tstamp(struct perf_session *session, |
8115d60c | 864 | union perf_event *event, |
8d50e5b4 | 865 | struct perf_sample *sample) |
9c90a61c ACM |
866 | { |
867 | if (event->header.type != PERF_RECORD_SAMPLE && | |
868 | !session->sample_id_all) { | |
869 | fputs("-1 -1 ", stdout); | |
870 | return; | |
871 | } | |
872 | ||
873 | if ((session->sample_type & PERF_SAMPLE_CPU)) | |
874 | printf("%u ", sample->cpu); | |
875 | ||
876 | if (session->sample_type & PERF_SAMPLE_TIME) | |
9486aa38 | 877 | printf("%" PRIu64 " ", sample->time); |
9c90a61c ACM |
878 | } |
879 | ||
8115d60c | 880 | static void dump_event(struct perf_session *session, union perf_event *event, |
8d50e5b4 | 881 | u64 file_offset, struct perf_sample *sample) |
9aefcab0 TG |
882 | { |
883 | if (!dump_trace) | |
884 | return; | |
885 | ||
9486aa38 ACM |
886 | printf("\n%#" PRIx64 " [%#x]: event: %d\n", |
887 | file_offset, event->header.size, event->header.type); | |
9aefcab0 TG |
888 | |
889 | trace_event(event); | |
890 | ||
891 | if (sample) | |
892 | perf_session__print_tstamp(session, event, sample); | |
893 | ||
9486aa38 | 894 | printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset, |
8115d60c | 895 | event->header.size, perf_event__name(event->header.type)); |
9aefcab0 TG |
896 | } |
897 | ||
8115d60c | 898 | static void dump_sample(struct perf_session *session, union perf_event *event, |
8d50e5b4 | 899 | struct perf_sample *sample) |
9aefcab0 | 900 | { |
ddbc24b7 ACM |
901 | if (!dump_trace) |
902 | return; | |
903 | ||
7cec0922 | 904 | printf("(IP, %d): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n", |
9486aa38 | 905 | event->header.misc, sample->pid, sample->tid, sample->ip, |
7cec0922 | 906 | sample->period, sample->addr); |
9aefcab0 TG |
907 | |
908 | if (session->sample_type & PERF_SAMPLE_CALLCHAIN) | |
ddbc24b7 | 909 | callchain__printf(sample); |
b5387528 RAV |
910 | |
911 | if (session->sample_type & PERF_SAMPLE_BRANCH_STACK) | |
912 | branch_stack__printf(sample); | |
9aefcab0 TG |
913 | } |
914 | ||
743eb868 ACM |
915 | static struct machine * |
916 | perf_session__find_machine_for_cpumode(struct perf_session *session, | |
917 | union perf_event *event) | |
918 | { | |
919 | const u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
920 | ||
7fb0a5ee ND |
921 | if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) { |
922 | u32 pid; | |
923 | ||
924 | if (event->header.type == PERF_RECORD_MMAP) | |
925 | pid = event->mmap.pid; | |
926 | else | |
927 | pid = event->ip.pid; | |
928 | ||
207b5792 | 929 | return perf_session__findnew_machine(session, pid); |
7fb0a5ee | 930 | } |
743eb868 ACM |
931 | |
932 | return perf_session__find_host_machine(session); | |
933 | } | |
934 | ||
cbf41645 | 935 | static int perf_session_deliver_event(struct perf_session *session, |
8115d60c | 936 | union perf_event *event, |
8d50e5b4 | 937 | struct perf_sample *sample, |
45694aa7 | 938 | struct perf_tool *tool, |
532e7269 | 939 | u64 file_offset) |
cbf41645 | 940 | { |
9e69c210 | 941 | struct perf_evsel *evsel; |
743eb868 | 942 | struct machine *machine; |
9e69c210 | 943 | |
532e7269 TG |
944 | dump_event(session, event, file_offset, sample); |
945 | ||
7b27509f ACM |
946 | evsel = perf_evlist__id2evsel(session->evlist, sample->id); |
947 | if (evsel != NULL && event->header.type != PERF_RECORD_SAMPLE) { | |
948 | /* | |
949 | * XXX We're leaving PERF_RECORD_SAMPLE unnacounted here | |
950 | * because the tools right now may apply filters, discarding | |
951 | * some of the samples. For consistency, in the future we | |
952 | * should have something like nr_filtered_samples and remove | |
953 | * the sample->period from total_sample_period, etc, KISS for | |
954 | * now tho. | |
955 | * | |
956 | * Also testing against NULL allows us to handle files without | |
957 | * attr.sample_id_all and/or without PERF_SAMPLE_ID. In the | |
958 | * future probably it'll be a good idea to restrict event | |
959 | * processing via perf_session to files with both set. | |
960 | */ | |
961 | hists__inc_nr_events(&evsel->hists, event->header.type); | |
962 | } | |
963 | ||
743eb868 ACM |
964 | machine = perf_session__find_machine_for_cpumode(session, event); |
965 | ||
cbf41645 TG |
966 | switch (event->header.type) { |
967 | case PERF_RECORD_SAMPLE: | |
532e7269 | 968 | dump_sample(session, event, sample); |
9e69c210 ACM |
969 | if (evsel == NULL) { |
970 | ++session->hists.stats.nr_unknown_id; | |
6782206b | 971 | return 0; |
9e69c210 | 972 | } |
0c095715 JR |
973 | if (machine == NULL) { |
974 | ++session->hists.stats.nr_unprocessable_samples; | |
6782206b | 975 | return 0; |
0c095715 | 976 | } |
45694aa7 | 977 | return tool->sample(tool, event, sample, evsel, machine); |
cbf41645 | 978 | case PERF_RECORD_MMAP: |
45694aa7 | 979 | return tool->mmap(tool, event, sample, machine); |
cbf41645 | 980 | case PERF_RECORD_COMM: |
45694aa7 | 981 | return tool->comm(tool, event, sample, machine); |
cbf41645 | 982 | case PERF_RECORD_FORK: |
45694aa7 | 983 | return tool->fork(tool, event, sample, machine); |
cbf41645 | 984 | case PERF_RECORD_EXIT: |
45694aa7 | 985 | return tool->exit(tool, event, sample, machine); |
cbf41645 | 986 | case PERF_RECORD_LOST: |
45694aa7 | 987 | if (tool->lost == perf_event__process_lost) |
743eb868 | 988 | session->hists.stats.total_lost += event->lost.lost; |
45694aa7 | 989 | return tool->lost(tool, event, sample, machine); |
cbf41645 | 990 | case PERF_RECORD_READ: |
45694aa7 | 991 | return tool->read(tool, event, sample, evsel, machine); |
cbf41645 | 992 | case PERF_RECORD_THROTTLE: |
45694aa7 | 993 | return tool->throttle(tool, event, sample, machine); |
cbf41645 | 994 | case PERF_RECORD_UNTHROTTLE: |
45694aa7 | 995 | return tool->unthrottle(tool, event, sample, machine); |
cbf41645 TG |
996 | default: |
997 | ++session->hists.stats.nr_unknown_events; | |
998 | return -1; | |
999 | } | |
1000 | } | |
1001 | ||
3dfc2c0a | 1002 | static int perf_session__preprocess_sample(struct perf_session *session, |
8115d60c | 1003 | union perf_event *event, struct perf_sample *sample) |
3dfc2c0a TG |
1004 | { |
1005 | if (event->header.type != PERF_RECORD_SAMPLE || | |
1006 | !(session->sample_type & PERF_SAMPLE_CALLCHAIN)) | |
1007 | return 0; | |
1008 | ||
1009 | if (!ip_callchain__valid(sample->callchain, event)) { | |
1010 | pr_debug("call-chain problem with event, skipping it.\n"); | |
1011 | ++session->hists.stats.nr_invalid_chains; | |
1012 | session->hists.stats.total_invalid_chains += sample->period; | |
1013 | return -EINVAL; | |
1014 | } | |
1015 | return 0; | |
1016 | } | |
1017 | ||
8115d60c | 1018 | static int perf_session__process_user_event(struct perf_session *session, union perf_event *event, |
45694aa7 | 1019 | struct perf_tool *tool, u64 file_offset) |
06aae590 | 1020 | { |
10d0f086 ACM |
1021 | int err; |
1022 | ||
ba74f064 | 1023 | dump_event(session, event, file_offset, NULL); |
06aae590 | 1024 | |
cbf41645 | 1025 | /* These events are processed right away */ |
06aae590 | 1026 | switch (event->header.type) { |
2c46dbb5 | 1027 | case PERF_RECORD_HEADER_ATTR: |
45694aa7 | 1028 | err = tool->attr(event, &session->evlist); |
10d0f086 ACM |
1029 | if (err == 0) |
1030 | perf_session__update_sample_type(session); | |
1031 | return err; | |
cd19a035 | 1032 | case PERF_RECORD_HEADER_EVENT_TYPE: |
45694aa7 | 1033 | return tool->event_type(tool, event); |
9215545e TZ |
1034 | case PERF_RECORD_HEADER_TRACING_DATA: |
1035 | /* setup for reading amidst mmap */ | |
cbf41645 | 1036 | lseek(session->fd, file_offset, SEEK_SET); |
45694aa7 | 1037 | return tool->tracing_data(event, session); |
c7929e47 | 1038 | case PERF_RECORD_HEADER_BUILD_ID: |
45694aa7 | 1039 | return tool->build_id(tool, event, session); |
d6b17beb | 1040 | case PERF_RECORD_FINISHED_ROUND: |
45694aa7 | 1041 | return tool->finished_round(tool, event, session); |
06aae590 | 1042 | default: |
ba74f064 | 1043 | return -EINVAL; |
06aae590 | 1044 | } |
ba74f064 TG |
1045 | } |
1046 | ||
268fb20f JO |
1047 | static void event_swap(union perf_event *event, bool sample_id_all) |
1048 | { | |
1049 | perf_event__swap_op swap; | |
1050 | ||
1051 | swap = perf_event__swap_ops[event->header.type]; | |
1052 | if (swap) | |
1053 | swap(event, sample_id_all); | |
1054 | } | |
1055 | ||
ba74f064 | 1056 | static int perf_session__process_event(struct perf_session *session, |
8115d60c | 1057 | union perf_event *event, |
45694aa7 | 1058 | struct perf_tool *tool, |
ba74f064 TG |
1059 | u64 file_offset) |
1060 | { | |
8d50e5b4 | 1061 | struct perf_sample sample; |
ba74f064 TG |
1062 | int ret; |
1063 | ||
268fb20f JO |
1064 | if (session->header.needs_swap) |
1065 | event_swap(event, session->sample_id_all); | |
ba74f064 TG |
1066 | |
1067 | if (event->header.type >= PERF_RECORD_HEADER_MAX) | |
1068 | return -EINVAL; | |
1069 | ||
1070 | hists__inc_nr_events(&session->hists, event->header.type); | |
1071 | ||
1072 | if (event->header.type >= PERF_RECORD_USER_TYPE_START) | |
45694aa7 | 1073 | return perf_session__process_user_event(session, event, tool, file_offset); |
cbf41645 | 1074 | |
3dfc2c0a TG |
1075 | /* |
1076 | * For all kernel events we get the sample data | |
1077 | */ | |
5538beca FW |
1078 | ret = perf_session__parse_sample(session, event, &sample); |
1079 | if (ret) | |
1080 | return ret; | |
3dfc2c0a TG |
1081 | |
1082 | /* Preprocess sample records - precheck callchains */ | |
1083 | if (perf_session__preprocess_sample(session, event, &sample)) | |
1084 | return 0; | |
1085 | ||
45694aa7 | 1086 | if (tool->ordered_samples) { |
e4c2df13 TG |
1087 | ret = perf_session_queue_event(session, event, &sample, |
1088 | file_offset); | |
cbf41645 TG |
1089 | if (ret != -ETIME) |
1090 | return ret; | |
1091 | } | |
1092 | ||
45694aa7 | 1093 | return perf_session_deliver_event(session, event, &sample, tool, |
f74725dc | 1094 | file_offset); |
06aae590 ACM |
1095 | } |
1096 | ||
ba21594c ACM |
1097 | void perf_event_header__bswap(struct perf_event_header *self) |
1098 | { | |
1099 | self->type = bswap_32(self->type); | |
1100 | self->misc = bswap_16(self->misc); | |
1101 | self->size = bswap_16(self->size); | |
1102 | } | |
1103 | ||
b424eba2 ACM |
1104 | struct thread *perf_session__findnew(struct perf_session *session, pid_t pid) |
1105 | { | |
1106 | return machine__findnew_thread(&session->host_machine, pid); | |
1107 | } | |
1108 | ||
06aae590 ACM |
1109 | static struct thread *perf_session__register_idle_thread(struct perf_session *self) |
1110 | { | |
1111 | struct thread *thread = perf_session__findnew(self, 0); | |
1112 | ||
1113 | if (thread == NULL || thread__set_comm(thread, "swapper")) { | |
1114 | pr_err("problem inserting idle task.\n"); | |
1115 | thread = NULL; | |
1116 | } | |
1117 | ||
1118 | return thread; | |
1119 | } | |
1120 | ||
11095994 | 1121 | static void perf_session__warn_about_errors(const struct perf_session *session, |
45694aa7 | 1122 | const struct perf_tool *tool) |
11095994 | 1123 | { |
45694aa7 | 1124 | if (tool->lost == perf_event__process_lost && |
7b27509f ACM |
1125 | session->hists.stats.nr_events[PERF_RECORD_LOST] != 0) { |
1126 | ui__warning("Processed %d events and lost %d chunks!\n\n" | |
1127 | "Check IO/CPU overload!\n\n", | |
1128 | session->hists.stats.nr_events[0], | |
1129 | session->hists.stats.nr_events[PERF_RECORD_LOST]); | |
11095994 ACM |
1130 | } |
1131 | ||
1132 | if (session->hists.stats.nr_unknown_events != 0) { | |
1133 | ui__warning("Found %u unknown events!\n\n" | |
1134 | "Is this an older tool processing a perf.data " | |
1135 | "file generated by a more recent tool?\n\n" | |
1136 | "If that is not the case, consider " | |
1137 | "reporting to linux-kernel@vger.kernel.org.\n\n", | |
1138 | session->hists.stats.nr_unknown_events); | |
1139 | } | |
1140 | ||
9e69c210 ACM |
1141 | if (session->hists.stats.nr_unknown_id != 0) { |
1142 | ui__warning("%u samples with id not present in the header\n", | |
1143 | session->hists.stats.nr_unknown_id); | |
1144 | } | |
1145 | ||
11095994 ACM |
1146 | if (session->hists.stats.nr_invalid_chains != 0) { |
1147 | ui__warning("Found invalid callchains!\n\n" | |
1148 | "%u out of %u events were discarded for this reason.\n\n" | |
1149 | "Consider reporting to linux-kernel@vger.kernel.org.\n\n", | |
1150 | session->hists.stats.nr_invalid_chains, | |
1151 | session->hists.stats.nr_events[PERF_RECORD_SAMPLE]); | |
1152 | } | |
0c095715 JR |
1153 | |
1154 | if (session->hists.stats.nr_unprocessable_samples != 0) { | |
1155 | ui__warning("%u unprocessable samples recorded.\n" | |
1156 | "Do you have a KVM guest running and not using 'perf kvm'?\n", | |
1157 | session->hists.stats.nr_unprocessable_samples); | |
1158 | } | |
11095994 ACM |
1159 | } |
1160 | ||
8dc58101 TZ |
1161 | #define session_done() (*(volatile int *)(&session_done)) |
1162 | volatile int session_done; | |
1163 | ||
1164 | static int __perf_session__process_pipe_events(struct perf_session *self, | |
45694aa7 | 1165 | struct perf_tool *tool) |
8dc58101 | 1166 | { |
444d2866 SE |
1167 | union perf_event *event; |
1168 | uint32_t size, cur_size = 0; | |
1169 | void *buf = NULL; | |
8dc58101 TZ |
1170 | int skip = 0; |
1171 | u64 head; | |
1172 | int err; | |
1173 | void *p; | |
1174 | ||
45694aa7 | 1175 | perf_tool__fill_defaults(tool); |
8dc58101 TZ |
1176 | |
1177 | head = 0; | |
444d2866 SE |
1178 | cur_size = sizeof(union perf_event); |
1179 | ||
1180 | buf = malloc(cur_size); | |
1181 | if (!buf) | |
1182 | return -errno; | |
8dc58101 | 1183 | more: |
444d2866 SE |
1184 | event = buf; |
1185 | err = readn(self->fd, event, sizeof(struct perf_event_header)); | |
8dc58101 TZ |
1186 | if (err <= 0) { |
1187 | if (err == 0) | |
1188 | goto done; | |
1189 | ||
1190 | pr_err("failed to read event header\n"); | |
1191 | goto out_err; | |
1192 | } | |
1193 | ||
1194 | if (self->header.needs_swap) | |
444d2866 | 1195 | perf_event_header__bswap(&event->header); |
8dc58101 | 1196 | |
444d2866 | 1197 | size = event->header.size; |
8dc58101 TZ |
1198 | if (size == 0) |
1199 | size = 8; | |
1200 | ||
444d2866 SE |
1201 | if (size > cur_size) { |
1202 | void *new = realloc(buf, size); | |
1203 | if (!new) { | |
1204 | pr_err("failed to allocate memory to read event\n"); | |
1205 | goto out_err; | |
1206 | } | |
1207 | buf = new; | |
1208 | cur_size = size; | |
1209 | event = buf; | |
1210 | } | |
1211 | p = event; | |
8dc58101 TZ |
1212 | p += sizeof(struct perf_event_header); |
1213 | ||
794e43b5 | 1214 | if (size - sizeof(struct perf_event_header)) { |
1e7972cc | 1215 | err = readn(self->fd, p, size - sizeof(struct perf_event_header)); |
794e43b5 TZ |
1216 | if (err <= 0) { |
1217 | if (err == 0) { | |
1218 | pr_err("unexpected end of event stream\n"); | |
1219 | goto done; | |
1220 | } | |
8dc58101 | 1221 | |
794e43b5 TZ |
1222 | pr_err("failed to read event data\n"); |
1223 | goto out_err; | |
1224 | } | |
8dc58101 TZ |
1225 | } |
1226 | ||
444d2866 | 1227 | if ((skip = perf_session__process_event(self, event, tool, head)) < 0) { |
9389a460 | 1228 | pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", |
444d2866 | 1229 | head, event->header.size, event->header.type); |
9389a460 JO |
1230 | err = -EINVAL; |
1231 | goto out_err; | |
8dc58101 TZ |
1232 | } |
1233 | ||
1234 | head += size; | |
1235 | ||
8dc58101 TZ |
1236 | if (skip > 0) |
1237 | head += skip; | |
1238 | ||
1239 | if (!session_done()) | |
1240 | goto more; | |
1241 | done: | |
1242 | err = 0; | |
1243 | out_err: | |
444d2866 | 1244 | free(buf); |
45694aa7 | 1245 | perf_session__warn_about_errors(self, tool); |
020bb75a | 1246 | perf_session_free_sample_buffers(self); |
8dc58101 TZ |
1247 | return err; |
1248 | } | |
1249 | ||
998bedc8 FW |
1250 | static union perf_event * |
1251 | fetch_mmaped_event(struct perf_session *session, | |
1252 | u64 head, size_t mmap_size, char *buf) | |
1253 | { | |
1254 | union perf_event *event; | |
1255 | ||
1256 | /* | |
1257 | * Ensure we have enough space remaining to read | |
1258 | * the size of the event in the headers. | |
1259 | */ | |
1260 | if (head + sizeof(event->header) > mmap_size) | |
1261 | return NULL; | |
1262 | ||
1263 | event = (union perf_event *)(buf + head); | |
1264 | ||
1265 | if (session->header.needs_swap) | |
1266 | perf_event_header__bswap(&event->header); | |
1267 | ||
1268 | if (head + event->header.size > mmap_size) | |
1269 | return NULL; | |
1270 | ||
1271 | return event; | |
1272 | } | |
1273 | ||
0331ee0c | 1274 | int __perf_session__process_events(struct perf_session *session, |
6122e4e4 | 1275 | u64 data_offset, u64 data_size, |
45694aa7 | 1276 | u64 file_size, struct perf_tool *tool) |
06aae590 | 1277 | { |
55b44629 | 1278 | u64 head, page_offset, file_offset, file_pos, progress_next; |
fe174207 | 1279 | int err, mmap_prot, mmap_flags, map_idx = 0; |
55b44629 | 1280 | size_t page_size, mmap_size; |
fe174207 | 1281 | char *buf, *mmaps[8]; |
8115d60c | 1282 | union perf_event *event; |
06aae590 | 1283 | uint32_t size; |
0331ee0c | 1284 | |
45694aa7 | 1285 | perf_tool__fill_defaults(tool); |
06aae590 | 1286 | |
1b75962e | 1287 | page_size = sysconf(_SC_PAGESIZE); |
06aae590 | 1288 | |
0331ee0c TG |
1289 | page_offset = page_size * (data_offset / page_size); |
1290 | file_offset = page_offset; | |
1291 | head = data_offset - page_offset; | |
06aae590 | 1292 | |
d6513281 TG |
1293 | if (data_offset + data_size < file_size) |
1294 | file_size = data_offset + data_size; | |
1295 | ||
55b44629 | 1296 | progress_next = file_size / 16; |
55b44629 TG |
1297 | |
1298 | mmap_size = session->mmap_window; | |
1299 | if (mmap_size > file_size) | |
1300 | mmap_size = file_size; | |
1301 | ||
fe174207 TG |
1302 | memset(mmaps, 0, sizeof(mmaps)); |
1303 | ||
ba21594c ACM |
1304 | mmap_prot = PROT_READ; |
1305 | mmap_flags = MAP_SHARED; | |
1306 | ||
0331ee0c | 1307 | if (session->header.needs_swap) { |
ba21594c ACM |
1308 | mmap_prot |= PROT_WRITE; |
1309 | mmap_flags = MAP_PRIVATE; | |
1310 | } | |
06aae590 | 1311 | remap: |
55b44629 TG |
1312 | buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, session->fd, |
1313 | file_offset); | |
06aae590 ACM |
1314 | if (buf == MAP_FAILED) { |
1315 | pr_err("failed to mmap file\n"); | |
1316 | err = -errno; | |
1317 | goto out_err; | |
1318 | } | |
fe174207 TG |
1319 | mmaps[map_idx] = buf; |
1320 | map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1); | |
d6513281 | 1321 | file_pos = file_offset + head; |
06aae590 ACM |
1322 | |
1323 | more: | |
998bedc8 FW |
1324 | event = fetch_mmaped_event(session, head, mmap_size, buf); |
1325 | if (!event) { | |
fe174207 TG |
1326 | if (mmaps[map_idx]) { |
1327 | munmap(mmaps[map_idx], mmap_size); | |
1328 | mmaps[map_idx] = NULL; | |
1329 | } | |
06aae590 | 1330 | |
0331ee0c TG |
1331 | page_offset = page_size * (head / page_size); |
1332 | file_offset += page_offset; | |
1333 | head -= page_offset; | |
06aae590 ACM |
1334 | goto remap; |
1335 | } | |
1336 | ||
1337 | size = event->header.size; | |
1338 | ||
d6513281 | 1339 | if (size == 0 || |
45694aa7 | 1340 | perf_session__process_event(session, event, tool, file_pos) < 0) { |
9389a460 JO |
1341 | pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", |
1342 | file_offset + head, event->header.size, | |
1343 | event->header.type); | |
1344 | err = -EINVAL; | |
1345 | goto out_err; | |
06aae590 ACM |
1346 | } |
1347 | ||
1348 | head += size; | |
d6513281 | 1349 | file_pos += size; |
06aae590 | 1350 | |
55b44629 TG |
1351 | if (file_pos >= progress_next) { |
1352 | progress_next += file_size / 16; | |
ca59bcbc ACM |
1353 | ui_progress__update(file_pos, file_size, |
1354 | "Processing events..."); | |
55b44629 TG |
1355 | } |
1356 | ||
d6513281 | 1357 | if (file_pos < file_size) |
06aae590 | 1358 | goto more; |
d6513281 | 1359 | |
06aae590 | 1360 | err = 0; |
c61e52ee | 1361 | /* do the final flush for ordered samples */ |
0331ee0c | 1362 | session->ordered_samples.next_flush = ULLONG_MAX; |
45694aa7 | 1363 | flush_sample_queue(session, tool); |
06aae590 | 1364 | out_err: |
45694aa7 | 1365 | perf_session__warn_about_errors(session, tool); |
020bb75a | 1366 | perf_session_free_sample_buffers(session); |
06aae590 ACM |
1367 | return err; |
1368 | } | |
27295592 | 1369 | |
6122e4e4 | 1370 | int perf_session__process_events(struct perf_session *self, |
45694aa7 | 1371 | struct perf_tool *tool) |
6122e4e4 ACM |
1372 | { |
1373 | int err; | |
1374 | ||
1375 | if (perf_session__register_idle_thread(self) == NULL) | |
1376 | return -ENOMEM; | |
1377 | ||
8dc58101 TZ |
1378 | if (!self->fd_pipe) |
1379 | err = __perf_session__process_events(self, | |
1380 | self->header.data_offset, | |
1381 | self->header.data_size, | |
45694aa7 | 1382 | self->size, tool); |
8dc58101 | 1383 | else |
45694aa7 | 1384 | err = __perf_session__process_pipe_events(self, tool); |
88ca895d | 1385 | |
6122e4e4 ACM |
1386 | return err; |
1387 | } | |
1388 | ||
d549c769 | 1389 | bool perf_session__has_traces(struct perf_session *self, const char *msg) |
27295592 ACM |
1390 | { |
1391 | if (!(self->sample_type & PERF_SAMPLE_RAW)) { | |
d549c769 ACM |
1392 | pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg); |
1393 | return false; | |
27295592 ACM |
1394 | } |
1395 | ||
d549c769 | 1396 | return true; |
27295592 | 1397 | } |
56b03f3c | 1398 | |
743eb868 ACM |
1399 | int maps__set_kallsyms_ref_reloc_sym(struct map **maps, |
1400 | const char *symbol_name, u64 addr) | |
56b03f3c ACM |
1401 | { |
1402 | char *bracket; | |
9de89fe7 | 1403 | enum map_type i; |
a1645ce1 ZY |
1404 | struct ref_reloc_sym *ref; |
1405 | ||
1406 | ref = zalloc(sizeof(struct ref_reloc_sym)); | |
1407 | if (ref == NULL) | |
1408 | return -ENOMEM; | |
56b03f3c | 1409 | |
a1645ce1 ZY |
1410 | ref->name = strdup(symbol_name); |
1411 | if (ref->name == NULL) { | |
1412 | free(ref); | |
56b03f3c | 1413 | return -ENOMEM; |
a1645ce1 | 1414 | } |
56b03f3c | 1415 | |
a1645ce1 | 1416 | bracket = strchr(ref->name, ']'); |
56b03f3c ACM |
1417 | if (bracket) |
1418 | *bracket = '\0'; | |
1419 | ||
a1645ce1 | 1420 | ref->addr = addr; |
9de89fe7 ACM |
1421 | |
1422 | for (i = 0; i < MAP__NR_TYPES; ++i) { | |
a1645ce1 ZY |
1423 | struct kmap *kmap = map__kmap(maps[i]); |
1424 | kmap->ref_reloc_sym = ref; | |
9de89fe7 ACM |
1425 | } |
1426 | ||
56b03f3c ACM |
1427 | return 0; |
1428 | } | |
1f626bc3 ACM |
1429 | |
1430 | size_t perf_session__fprintf_dsos(struct perf_session *self, FILE *fp) | |
1431 | { | |
1432 | return __dsos__fprintf(&self->host_machine.kernel_dsos, fp) + | |
1433 | __dsos__fprintf(&self->host_machine.user_dsos, fp) + | |
1434 | machines__fprintf_dsos(&self->machines, fp); | |
1435 | } | |
f869097e ACM |
1436 | |
1437 | size_t perf_session__fprintf_dsos_buildid(struct perf_session *self, FILE *fp, | |
1438 | bool with_hits) | |
1439 | { | |
1440 | size_t ret = machine__fprintf_dsos_buildid(&self->host_machine, fp, with_hits); | |
1441 | return ret + machines__fprintf_dsos_buildid(&self->machines, fp, with_hits); | |
1442 | } | |
e248de33 ACM |
1443 | |
1444 | size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp) | |
1445 | { | |
1446 | struct perf_evsel *pos; | |
1447 | size_t ret = fprintf(fp, "Aggregated stats:\n"); | |
1448 | ||
1449 | ret += hists__fprintf_nr_events(&session->hists, fp); | |
1450 | ||
1451 | list_for_each_entry(pos, &session->evlist->entries, node) { | |
7289f83c | 1452 | ret += fprintf(fp, "%s stats:\n", perf_evsel__name(pos)); |
e248de33 ACM |
1453 | ret += hists__fprintf_nr_events(&pos->hists, fp); |
1454 | } | |
1455 | ||
1456 | return ret; | |
1457 | } | |
c0230b2b | 1458 | |
b424eba2 ACM |
1459 | size_t perf_session__fprintf(struct perf_session *session, FILE *fp) |
1460 | { | |
1461 | /* | |
1462 | * FIXME: Here we have to actually print all the machines in this | |
1463 | * session, not just the host... | |
1464 | */ | |
1465 | return machine__fprintf(&session->host_machine, fp); | |
1466 | } | |
1467 | ||
1468 | void perf_session__remove_thread(struct perf_session *session, | |
1469 | struct thread *th) | |
1470 | { | |
1471 | /* | |
1472 | * FIXME: This one makes no sense, we need to remove the thread from | |
1473 | * the machine it belongs to, perf_session can have many machines, so | |
1474 | * doing it always on ->host_machine is wrong. Fix when auditing all | |
1475 | * the 'perf kvm' code. | |
1476 | */ | |
1477 | machine__remove_thread(&session->host_machine, th); | |
1478 | } | |
1479 | ||
9cbdb702 DA |
1480 | struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session, |
1481 | unsigned int type) | |
1482 | { | |
1483 | struct perf_evsel *pos; | |
1484 | ||
1485 | list_for_each_entry(pos, &session->evlist->entries, node) { | |
1486 | if (pos->attr.type == type) | |
1487 | return pos; | |
1488 | } | |
1489 | return NULL; | |
1490 | } | |
1491 | ||
743eb868 | 1492 | void perf_event__print_ip(union perf_event *event, struct perf_sample *sample, |
a9c34a9f JO |
1493 | struct machine *machine, int print_sym, |
1494 | int print_dso, int print_symoffset) | |
c0230b2b DA |
1495 | { |
1496 | struct addr_location al; | |
c0230b2b DA |
1497 | struct callchain_cursor_node *node; |
1498 | ||
743eb868 | 1499 | if (perf_event__preprocess_sample(event, machine, &al, sample, |
c0230b2b DA |
1500 | NULL) < 0) { |
1501 | error("problem processing %d event, skipping it.\n", | |
1502 | event->header.type); | |
1503 | return; | |
1504 | } | |
1505 | ||
1506 | if (symbol_conf.use_callchain && sample->callchain) { | |
1507 | ||
a9c34a9f | 1508 | if (machine__resolve_callchain(machine, al.thread, |
c0230b2b DA |
1509 | sample->callchain, NULL) != 0) { |
1510 | if (verbose) | |
1511 | error("Failed to resolve callchain. Skipping\n"); | |
1512 | return; | |
1513 | } | |
47260645 | 1514 | callchain_cursor_commit(&callchain_cursor); |
c0230b2b DA |
1515 | |
1516 | while (1) { | |
47260645 | 1517 | node = callchain_cursor_current(&callchain_cursor); |
c0230b2b DA |
1518 | if (!node) |
1519 | break; | |
1520 | ||
787bef17 DA |
1521 | printf("\t%16" PRIx64, node->ip); |
1522 | if (print_sym) { | |
547a92e0 AN |
1523 | printf(" "); |
1524 | symbol__fprintf_symname(node->sym, stdout); | |
610723f2 DA |
1525 | } |
1526 | if (print_dso) { | |
547a92e0 | 1527 | printf(" ("); |
52deff71 | 1528 | map__fprintf_dsoname(node->map, stdout); |
547a92e0 | 1529 | printf(")"); |
787bef17 DA |
1530 | } |
1531 | printf("\n"); | |
c0230b2b | 1532 | |
47260645 | 1533 | callchain_cursor_advance(&callchain_cursor); |
c0230b2b DA |
1534 | } |
1535 | ||
1536 | } else { | |
adc4bf99 | 1537 | printf("%16" PRIx64, sample->ip); |
787bef17 | 1538 | if (print_sym) { |
547a92e0 | 1539 | printf(" "); |
a978f2ab AN |
1540 | if (print_symoffset) |
1541 | symbol__fprintf_symname_offs(al.sym, &al, | |
1542 | stdout); | |
1543 | else | |
1544 | symbol__fprintf_symname(al.sym, stdout); | |
610723f2 DA |
1545 | } |
1546 | ||
1547 | if (print_dso) { | |
547a92e0 AN |
1548 | printf(" ("); |
1549 | map__fprintf_dsoname(al.map, stdout); | |
1550 | printf(")"); | |
787bef17 | 1551 | } |
c0230b2b DA |
1552 | } |
1553 | } | |
5d67be97 AB |
1554 | |
1555 | int perf_session__cpu_bitmap(struct perf_session *session, | |
1556 | const char *cpu_list, unsigned long *cpu_bitmap) | |
1557 | { | |
1558 | int i; | |
1559 | struct cpu_map *map; | |
1560 | ||
1561 | for (i = 0; i < PERF_TYPE_MAX; ++i) { | |
1562 | struct perf_evsel *evsel; | |
1563 | ||
1564 | evsel = perf_session__find_first_evtype(session, i); | |
1565 | if (!evsel) | |
1566 | continue; | |
1567 | ||
1568 | if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) { | |
1569 | pr_err("File does not contain CPU events. " | |
1570 | "Remove -c option to proceed.\n"); | |
1571 | return -1; | |
1572 | } | |
1573 | } | |
1574 | ||
1575 | map = cpu_map__new(cpu_list); | |
47fbe53b DA |
1576 | if (map == NULL) { |
1577 | pr_err("Invalid cpu_list\n"); | |
1578 | return -1; | |
1579 | } | |
5d67be97 AB |
1580 | |
1581 | for (i = 0; i < map->nr; i++) { | |
1582 | int cpu = map->map[i]; | |
1583 | ||
1584 | if (cpu >= MAX_NR_CPUS) { | |
1585 | pr_err("Requested CPU %d too large. " | |
1586 | "Consider raising MAX_NR_CPUS\n", cpu); | |
1587 | return -1; | |
1588 | } | |
1589 | ||
1590 | set_bit(cpu, cpu_bitmap); | |
1591 | } | |
1592 | ||
1593 | return 0; | |
1594 | } | |
fbe96f29 SE |
1595 | |
1596 | void perf_session__fprintf_info(struct perf_session *session, FILE *fp, | |
1597 | bool full) | |
1598 | { | |
1599 | struct stat st; | |
1600 | int ret; | |
1601 | ||
1602 | if (session == NULL || fp == NULL) | |
1603 | return; | |
1604 | ||
1605 | ret = fstat(session->fd, &st); | |
1606 | if (ret == -1) | |
1607 | return; | |
1608 | ||
1609 | fprintf(fp, "# ========\n"); | |
1610 | fprintf(fp, "# captured on: %s", ctime(&st.st_ctime)); | |
1611 | perf_header__fprintf_info(session, fp, full); | |
1612 | fprintf(fp, "# ========\n#\n"); | |
1613 | } | |
da378962 ACM |
1614 | |
1615 | ||
1616 | int __perf_session__set_tracepoints_handlers(struct perf_session *session, | |
1617 | const struct perf_evsel_str_handler *assocs, | |
1618 | size_t nr_assocs) | |
1619 | { | |
1620 | struct perf_evlist *evlist = session->evlist; | |
1621 | struct event_format *format; | |
1622 | struct perf_evsel *evsel; | |
1623 | char *tracepoint, *name; | |
1624 | size_t i; | |
1625 | int err; | |
1626 | ||
1627 | for (i = 0; i < nr_assocs; i++) { | |
1628 | err = -ENOMEM; | |
1629 | tracepoint = strdup(assocs[i].name); | |
1630 | if (tracepoint == NULL) | |
1631 | goto out; | |
1632 | ||
1633 | err = -ENOENT; | |
1634 | name = strchr(tracepoint, ':'); | |
1635 | if (name == NULL) | |
1636 | goto out_free; | |
1637 | ||
1638 | *name++ = '\0'; | |
1639 | format = pevent_find_event_by_name(session->pevent, | |
1640 | tracepoint, name); | |
1641 | if (format == NULL) { | |
1642 | /* | |
1643 | * Adding a handler for an event not in the session, | |
1644 | * just ignore it. | |
1645 | */ | |
1646 | goto next; | |
1647 | } | |
1648 | ||
1649 | evsel = perf_evlist__find_tracepoint_by_id(evlist, format->id); | |
1650 | if (evsel == NULL) | |
1651 | goto next; | |
1652 | ||
1653 | err = -EEXIST; | |
1654 | if (evsel->handler.func != NULL) | |
1655 | goto out_free; | |
1656 | evsel->handler.func = assocs[i].handler; | |
1657 | next: | |
1658 | free(tracepoint); | |
1659 | } | |
1660 | ||
1661 | err = 0; | |
1662 | out: | |
1663 | return err; | |
1664 | ||
1665 | out_free: | |
1666 | free(tracepoint); | |
1667 | goto out; | |
1668 | } |