Commit | Line | Data |
---|---|---|
b8f46c5a XG |
1 | #define _FILE_OFFSET_BITS 64 |
2 | ||
a9072bc0 | 3 | #include "util.h" |
7c6a1c65 | 4 | #include <sys/types.h> |
ba21594c | 5 | #include <byteswap.h> |
7c6a1c65 PZ |
6 | #include <unistd.h> |
7 | #include <stdio.h> | |
8 | #include <stdlib.h> | |
8671dab9 | 9 | #include <linux/list.h> |
ba21594c | 10 | #include <linux/kernel.h> |
b1e5a9be | 11 | #include <linux/bitops.h> |
fbe96f29 | 12 | #include <sys/utsname.h> |
7c6a1c65 | 13 | |
361c99a6 | 14 | #include "evlist.h" |
a91e5431 | 15 | #include "evsel.h" |
7c6a1c65 | 16 | #include "header.h" |
03456a15 FW |
17 | #include "../perf.h" |
18 | #include "trace-event.h" | |
301a0b02 | 19 | #include "session.h" |
8671dab9 | 20 | #include "symbol.h" |
4778d2e4 | 21 | #include "debug.h" |
fbe96f29 | 22 | #include "cpumap.h" |
7c6a1c65 | 23 | |
a1ac1d3c SE |
24 | static bool no_buildid_cache = false; |
25 | ||
8755a8f2 AV |
26 | static int event_count; |
27 | static struct perf_trace_event_type *events; | |
28 | ||
fbe96f29 SE |
29 | static u32 header_argc; |
30 | static const char **header_argv; | |
31 | ||
ae99fb2c | 32 | int perf_header__push_event(u64 id, const char *name) |
8755a8f2 | 33 | { |
f3054c77 UD |
34 | struct perf_trace_event_type *nevents; |
35 | ||
ec60a3fe | 36 | if (strlen(name) > MAX_EVENT_NAME) |
6beba7ad | 37 | pr_warning("Event %s will be truncated\n", name); |
8755a8f2 | 38 | |
f3054c77 UD |
39 | nevents = realloc(events, (event_count + 1) * sizeof(*events)); |
40 | if (nevents == NULL) | |
41 | return -ENOMEM; | |
42 | events = nevents; | |
ae99fb2c | 43 | |
8755a8f2 AV |
44 | memset(&events[event_count], 0, sizeof(struct perf_trace_event_type)); |
45 | events[event_count].event_id = id; | |
ec60a3fe | 46 | strncpy(events[event_count].name, name, MAX_EVENT_NAME - 1); |
8755a8f2 | 47 | event_count++; |
ae99fb2c | 48 | return 0; |
8755a8f2 AV |
49 | } |
50 | ||
51 | char *perf_header__find_event(u64 id) | |
52 | { | |
53 | int i; | |
54 | for (i = 0 ; i < event_count; i++) { | |
55 | if (events[i].event_id == id) | |
56 | return events[i].name; | |
57 | } | |
58 | return NULL; | |
59 | } | |
60 | ||
73323f54 SE |
61 | /* |
62 | * magic2 = "PERFILE2" | |
63 | * must be a numerical value to let the endianness | |
64 | * determine the memory layout. That way we are able | |
65 | * to detect endianness when reading the perf.data file | |
66 | * back. | |
67 | * | |
68 | * we check for legacy (PERFFILE) format. | |
69 | */ | |
70 | static const char *__perf_magic1 = "PERFFILE"; | |
71 | static const u64 __perf_magic2 = 0x32454c4946524550ULL; | |
72 | static const u64 __perf_magic2_sw = 0x50455246494c4532ULL; | |
7c6a1c65 | 73 | |
73323f54 | 74 | #define PERF_MAGIC __perf_magic2 |
7c6a1c65 | 75 | |
7c6a1c65 | 76 | struct perf_file_attr { |
cdd6c482 | 77 | struct perf_event_attr attr; |
7c6a1c65 PZ |
78 | struct perf_file_section ids; |
79 | }; | |
80 | ||
1c0b04d1 | 81 | void perf_header__set_feat(struct perf_header *header, int feat) |
8d06367f | 82 | { |
1c0b04d1 | 83 | set_bit(feat, header->adds_features); |
8d06367f ACM |
84 | } |
85 | ||
1c0b04d1 | 86 | void perf_header__clear_feat(struct perf_header *header, int feat) |
baa2f6ce | 87 | { |
1c0b04d1 | 88 | clear_bit(feat, header->adds_features); |
baa2f6ce ACM |
89 | } |
90 | ||
1c0b04d1 | 91 | bool perf_header__has_feat(const struct perf_header *header, int feat) |
8d06367f | 92 | { |
1c0b04d1 | 93 | return test_bit(feat, header->adds_features); |
8d06367f ACM |
94 | } |
95 | ||
3726cc75 | 96 | static int do_write(int fd, const void *buf, size_t size) |
7c6a1c65 PZ |
97 | { |
98 | while (size) { | |
99 | int ret = write(fd, buf, size); | |
100 | ||
101 | if (ret < 0) | |
d5eed904 | 102 | return -errno; |
7c6a1c65 PZ |
103 | |
104 | size -= ret; | |
105 | buf += ret; | |
106 | } | |
3726cc75 ACM |
107 | |
108 | return 0; | |
7c6a1c65 PZ |
109 | } |
110 | ||
f92cb24c ACM |
111 | #define NAME_ALIGN 64 |
112 | ||
113 | static int write_padded(int fd, const void *bf, size_t count, | |
114 | size_t count_aligned) | |
115 | { | |
116 | static const char zero_buf[NAME_ALIGN]; | |
117 | int err = do_write(fd, bf, count); | |
118 | ||
119 | if (!err) | |
120 | err = do_write(fd, zero_buf, count_aligned - count); | |
121 | ||
122 | return err; | |
123 | } | |
124 | ||
fbe96f29 SE |
125 | static int do_write_string(int fd, const char *str) |
126 | { | |
127 | u32 len, olen; | |
128 | int ret; | |
129 | ||
130 | olen = strlen(str) + 1; | |
131 | len = ALIGN(olen, NAME_ALIGN); | |
132 | ||
133 | /* write len, incl. \0 */ | |
134 | ret = do_write(fd, &len, sizeof(len)); | |
135 | if (ret < 0) | |
136 | return ret; | |
137 | ||
138 | return write_padded(fd, str, olen, len); | |
139 | } | |
140 | ||
141 | static char *do_read_string(int fd, struct perf_header *ph) | |
142 | { | |
143 | ssize_t sz, ret; | |
144 | u32 len; | |
145 | char *buf; | |
146 | ||
147 | sz = read(fd, &len, sizeof(len)); | |
148 | if (sz < (ssize_t)sizeof(len)) | |
149 | return NULL; | |
150 | ||
151 | if (ph->needs_swap) | |
152 | len = bswap_32(len); | |
153 | ||
154 | buf = malloc(len); | |
155 | if (!buf) | |
156 | return NULL; | |
157 | ||
158 | ret = read(fd, buf, len); | |
159 | if (ret == (ssize_t)len) { | |
160 | /* | |
161 | * strings are padded by zeroes | |
162 | * thus the actual strlen of buf | |
163 | * may be less than len | |
164 | */ | |
165 | return buf; | |
166 | } | |
167 | ||
168 | free(buf); | |
169 | return NULL; | |
170 | } | |
171 | ||
172 | int | |
173 | perf_header__set_cmdline(int argc, const char **argv) | |
174 | { | |
175 | int i; | |
176 | ||
177 | header_argc = (u32)argc; | |
178 | ||
179 | /* do not include NULL termination */ | |
180 | header_argv = calloc(argc, sizeof(char *)); | |
181 | if (!header_argv) | |
182 | return -ENOMEM; | |
183 | ||
184 | /* | |
185 | * must copy argv contents because it gets moved | |
186 | * around during option parsing | |
187 | */ | |
188 | for (i = 0; i < argc ; i++) | |
189 | header_argv[i] = argv[i]; | |
190 | ||
191 | return 0; | |
192 | } | |
193 | ||
1b549504 RR |
194 | #define dsos__for_each_with_build_id(pos, head) \ |
195 | list_for_each_entry(pos, head, node) \ | |
196 | if (!pos->has_build_id) \ | |
197 | continue; \ | |
198 | else | |
199 | ||
200 | static int __dsos__write_buildid_table(struct list_head *head, pid_t pid, | |
201 | u16 misc, int fd) | |
202 | { | |
203 | struct dso *pos; | |
204 | ||
205 | dsos__for_each_with_build_id(pos, head) { | |
206 | int err; | |
207 | struct build_id_event b; | |
208 | size_t len; | |
209 | ||
210 | if (!pos->hit) | |
211 | continue; | |
212 | len = pos->long_name_len + 1; | |
213 | len = ALIGN(len, NAME_ALIGN); | |
214 | memset(&b, 0, sizeof(b)); | |
215 | memcpy(&b.build_id, pos->build_id, sizeof(pos->build_id)); | |
216 | b.pid = pid; | |
217 | b.header.misc = misc; | |
218 | b.header.size = sizeof(b) + len; | |
219 | err = do_write(fd, &b, sizeof(b)); | |
220 | if (err < 0) | |
221 | return err; | |
222 | err = write_padded(fd, pos->long_name, | |
223 | pos->long_name_len + 1, len); | |
224 | if (err < 0) | |
225 | return err; | |
226 | } | |
227 | ||
228 | return 0; | |
229 | } | |
230 | ||
231 | static int machine__write_buildid_table(struct machine *machine, int fd) | |
232 | { | |
233 | int err; | |
234 | u16 kmisc = PERF_RECORD_MISC_KERNEL, | |
235 | umisc = PERF_RECORD_MISC_USER; | |
236 | ||
237 | if (!machine__is_host(machine)) { | |
238 | kmisc = PERF_RECORD_MISC_GUEST_KERNEL; | |
239 | umisc = PERF_RECORD_MISC_GUEST_USER; | |
240 | } | |
241 | ||
242 | err = __dsos__write_buildid_table(&machine->kernel_dsos, machine->pid, | |
243 | kmisc, fd); | |
244 | if (err == 0) | |
245 | err = __dsos__write_buildid_table(&machine->user_dsos, | |
246 | machine->pid, umisc, fd); | |
247 | return err; | |
248 | } | |
249 | ||
250 | static int dsos__write_buildid_table(struct perf_header *header, int fd) | |
251 | { | |
252 | struct perf_session *session = container_of(header, | |
253 | struct perf_session, header); | |
254 | struct rb_node *nd; | |
255 | int err = machine__write_buildid_table(&session->host_machine, fd); | |
256 | ||
257 | if (err) | |
258 | return err; | |
259 | ||
260 | for (nd = rb_first(&session->machines); nd; nd = rb_next(nd)) { | |
261 | struct machine *pos = rb_entry(nd, struct machine, rb_node); | |
262 | err = machine__write_buildid_table(pos, fd); | |
263 | if (err) | |
264 | break; | |
265 | } | |
266 | return err; | |
267 | } | |
268 | ||
269 | int build_id_cache__add_s(const char *sbuild_id, const char *debugdir, | |
270 | const char *name, bool is_kallsyms) | |
271 | { | |
272 | const size_t size = PATH_MAX; | |
273 | char *realname, *filename = zalloc(size), | |
274 | *linkname = zalloc(size), *targetname; | |
275 | int len, err = -1; | |
276 | ||
277 | if (is_kallsyms) { | |
278 | if (symbol_conf.kptr_restrict) { | |
279 | pr_debug("Not caching a kptr_restrict'ed /proc/kallsyms\n"); | |
280 | return 0; | |
281 | } | |
282 | realname = (char *)name; | |
283 | } else | |
284 | realname = realpath(name, NULL); | |
285 | ||
286 | if (realname == NULL || filename == NULL || linkname == NULL) | |
287 | goto out_free; | |
288 | ||
e7f01d1e | 289 | len = scnprintf(filename, size, "%s%s%s", |
1b549504 RR |
290 | debugdir, is_kallsyms ? "/" : "", realname); |
291 | if (mkdir_p(filename, 0755)) | |
292 | goto out_free; | |
293 | ||
afda0f94 | 294 | snprintf(filename + len, size - len, "/%s", sbuild_id); |
1b549504 RR |
295 | |
296 | if (access(filename, F_OK)) { | |
297 | if (is_kallsyms) { | |
298 | if (copyfile("/proc/kallsyms", filename)) | |
299 | goto out_free; | |
300 | } else if (link(realname, filename) && copyfile(name, filename)) | |
301 | goto out_free; | |
302 | } | |
303 | ||
e7f01d1e | 304 | len = scnprintf(linkname, size, "%s/.build-id/%.2s", |
1b549504 RR |
305 | debugdir, sbuild_id); |
306 | ||
307 | if (access(linkname, X_OK) && mkdir_p(linkname, 0755)) | |
308 | goto out_free; | |
309 | ||
310 | snprintf(linkname + len, size - len, "/%s", sbuild_id + 2); | |
311 | targetname = filename + strlen(debugdir) - 5; | |
312 | memcpy(targetname, "../..", 5); | |
313 | ||
314 | if (symlink(targetname, linkname) == 0) | |
315 | err = 0; | |
316 | out_free: | |
317 | if (!is_kallsyms) | |
318 | free(realname); | |
319 | free(filename); | |
320 | free(linkname); | |
321 | return err; | |
322 | } | |
323 | ||
324 | static int build_id_cache__add_b(const u8 *build_id, size_t build_id_size, | |
325 | const char *name, const char *debugdir, | |
326 | bool is_kallsyms) | |
327 | { | |
328 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; | |
329 | ||
330 | build_id__sprintf(build_id, build_id_size, sbuild_id); | |
331 | ||
332 | return build_id_cache__add_s(sbuild_id, debugdir, name, is_kallsyms); | |
333 | } | |
334 | ||
335 | int build_id_cache__remove_s(const char *sbuild_id, const char *debugdir) | |
336 | { | |
337 | const size_t size = PATH_MAX; | |
338 | char *filename = zalloc(size), | |
339 | *linkname = zalloc(size); | |
340 | int err = -1; | |
341 | ||
342 | if (filename == NULL || linkname == NULL) | |
343 | goto out_free; | |
344 | ||
345 | snprintf(linkname, size, "%s/.build-id/%.2s/%s", | |
346 | debugdir, sbuild_id, sbuild_id + 2); | |
347 | ||
348 | if (access(linkname, F_OK)) | |
349 | goto out_free; | |
350 | ||
351 | if (readlink(linkname, filename, size - 1) < 0) | |
352 | goto out_free; | |
353 | ||
354 | if (unlink(linkname)) | |
355 | goto out_free; | |
356 | ||
357 | /* | |
358 | * Since the link is relative, we must make it absolute: | |
359 | */ | |
360 | snprintf(linkname, size, "%s/.build-id/%.2s/%s", | |
361 | debugdir, sbuild_id, filename); | |
362 | ||
363 | if (unlink(linkname)) | |
364 | goto out_free; | |
365 | ||
366 | err = 0; | |
367 | out_free: | |
368 | free(filename); | |
369 | free(linkname); | |
370 | return err; | |
371 | } | |
372 | ||
373 | static int dso__cache_build_id(struct dso *dso, const char *debugdir) | |
374 | { | |
375 | bool is_kallsyms = dso->kernel && dso->long_name[0] != '/'; | |
376 | ||
377 | return build_id_cache__add_b(dso->build_id, sizeof(dso->build_id), | |
378 | dso->long_name, debugdir, is_kallsyms); | |
379 | } | |
380 | ||
381 | static int __dsos__cache_build_ids(struct list_head *head, const char *debugdir) | |
382 | { | |
383 | struct dso *pos; | |
384 | int err = 0; | |
385 | ||
386 | dsos__for_each_with_build_id(pos, head) | |
387 | if (dso__cache_build_id(pos, debugdir)) | |
388 | err = -1; | |
389 | ||
390 | return err; | |
391 | } | |
392 | ||
393 | static int machine__cache_build_ids(struct machine *machine, const char *debugdir) | |
394 | { | |
395 | int ret = __dsos__cache_build_ids(&machine->kernel_dsos, debugdir); | |
396 | ret |= __dsos__cache_build_ids(&machine->user_dsos, debugdir); | |
397 | return ret; | |
398 | } | |
399 | ||
400 | static int perf_session__cache_build_ids(struct perf_session *session) | |
401 | { | |
402 | struct rb_node *nd; | |
403 | int ret; | |
404 | char debugdir[PATH_MAX]; | |
405 | ||
406 | snprintf(debugdir, sizeof(debugdir), "%s", buildid_dir); | |
407 | ||
408 | if (mkdir(debugdir, 0755) != 0 && errno != EEXIST) | |
409 | return -1; | |
410 | ||
411 | ret = machine__cache_build_ids(&session->host_machine, debugdir); | |
412 | ||
413 | for (nd = rb_first(&session->machines); nd; nd = rb_next(nd)) { | |
414 | struct machine *pos = rb_entry(nd, struct machine, rb_node); | |
415 | ret |= machine__cache_build_ids(pos, debugdir); | |
416 | } | |
417 | return ret ? -1 : 0; | |
418 | } | |
419 | ||
420 | static bool machine__read_build_ids(struct machine *machine, bool with_hits) | |
421 | { | |
422 | bool ret = __dsos__read_build_ids(&machine->kernel_dsos, with_hits); | |
423 | ret |= __dsos__read_build_ids(&machine->user_dsos, with_hits); | |
424 | return ret; | |
425 | } | |
426 | ||
427 | static bool perf_session__read_build_ids(struct perf_session *session, bool with_hits) | |
428 | { | |
429 | struct rb_node *nd; | |
430 | bool ret = machine__read_build_ids(&session->host_machine, with_hits); | |
431 | ||
432 | for (nd = rb_first(&session->machines); nd; nd = rb_next(nd)) { | |
433 | struct machine *pos = rb_entry(nd, struct machine, rb_node); | |
434 | ret |= machine__read_build_ids(pos, with_hits); | |
435 | } | |
436 | ||
437 | return ret; | |
438 | } | |
439 | ||
2eeaaa09 | 440 | static int write_tracing_data(int fd, struct perf_header *h __used, |
fbe96f29 SE |
441 | struct perf_evlist *evlist) |
442 | { | |
443 | return read_tracing_data(fd, &evlist->entries); | |
444 | } | |
445 | ||
446 | ||
447 | static int write_build_id(int fd, struct perf_header *h, | |
448 | struct perf_evlist *evlist __used) | |
449 | { | |
450 | struct perf_session *session; | |
451 | int err; | |
452 | ||
453 | session = container_of(h, struct perf_session, header); | |
454 | ||
e20960c0 RR |
455 | if (!perf_session__read_build_ids(session, true)) |
456 | return -1; | |
457 | ||
fbe96f29 SE |
458 | err = dsos__write_buildid_table(h, fd); |
459 | if (err < 0) { | |
460 | pr_debug("failed to write buildid table\n"); | |
461 | return err; | |
462 | } | |
463 | if (!no_buildid_cache) | |
464 | perf_session__cache_build_ids(session); | |
465 | ||
466 | return 0; | |
467 | } | |
468 | ||
469 | static int write_hostname(int fd, struct perf_header *h __used, | |
470 | struct perf_evlist *evlist __used) | |
471 | { | |
472 | struct utsname uts; | |
473 | int ret; | |
474 | ||
475 | ret = uname(&uts); | |
476 | if (ret < 0) | |
477 | return -1; | |
478 | ||
479 | return do_write_string(fd, uts.nodename); | |
480 | } | |
481 | ||
482 | static int write_osrelease(int fd, struct perf_header *h __used, | |
483 | struct perf_evlist *evlist __used) | |
484 | { | |
485 | struct utsname uts; | |
486 | int ret; | |
487 | ||
488 | ret = uname(&uts); | |
489 | if (ret < 0) | |
490 | return -1; | |
491 | ||
492 | return do_write_string(fd, uts.release); | |
493 | } | |
494 | ||
495 | static int write_arch(int fd, struct perf_header *h __used, | |
496 | struct perf_evlist *evlist __used) | |
497 | { | |
498 | struct utsname uts; | |
499 | int ret; | |
500 | ||
501 | ret = uname(&uts); | |
502 | if (ret < 0) | |
503 | return -1; | |
504 | ||
505 | return do_write_string(fd, uts.machine); | |
506 | } | |
507 | ||
508 | static int write_version(int fd, struct perf_header *h __used, | |
509 | struct perf_evlist *evlist __used) | |
510 | { | |
511 | return do_write_string(fd, perf_version_string); | |
512 | } | |
513 | ||
514 | static int write_cpudesc(int fd, struct perf_header *h __used, | |
515 | struct perf_evlist *evlist __used) | |
516 | { | |
517 | #ifndef CPUINFO_PROC | |
518 | #define CPUINFO_PROC NULL | |
519 | #endif | |
520 | FILE *file; | |
521 | char *buf = NULL; | |
522 | char *s, *p; | |
523 | const char *search = CPUINFO_PROC; | |
524 | size_t len = 0; | |
525 | int ret = -1; | |
526 | ||
527 | if (!search) | |
528 | return -1; | |
529 | ||
530 | file = fopen("/proc/cpuinfo", "r"); | |
531 | if (!file) | |
532 | return -1; | |
533 | ||
534 | while (getline(&buf, &len, file) > 0) { | |
535 | ret = strncmp(buf, search, strlen(search)); | |
536 | if (!ret) | |
537 | break; | |
538 | } | |
539 | ||
540 | if (ret) | |
541 | goto done; | |
542 | ||
543 | s = buf; | |
544 | ||
545 | p = strchr(buf, ':'); | |
546 | if (p && *(p+1) == ' ' && *(p+2)) | |
547 | s = p + 2; | |
548 | p = strchr(s, '\n'); | |
549 | if (p) | |
550 | *p = '\0'; | |
551 | ||
552 | /* squash extra space characters (branding string) */ | |
553 | p = s; | |
554 | while (*p) { | |
555 | if (isspace(*p)) { | |
556 | char *r = p + 1; | |
557 | char *q = r; | |
558 | *p = ' '; | |
559 | while (*q && isspace(*q)) | |
560 | q++; | |
561 | if (q != (p+1)) | |
562 | while ((*r++ = *q++)); | |
563 | } | |
564 | p++; | |
565 | } | |
566 | ret = do_write_string(fd, s); | |
567 | done: | |
568 | free(buf); | |
569 | fclose(file); | |
570 | return ret; | |
571 | } | |
572 | ||
573 | static int write_nrcpus(int fd, struct perf_header *h __used, | |
574 | struct perf_evlist *evlist __used) | |
575 | { | |
576 | long nr; | |
577 | u32 nrc, nra; | |
578 | int ret; | |
579 | ||
580 | nr = sysconf(_SC_NPROCESSORS_CONF); | |
581 | if (nr < 0) | |
582 | return -1; | |
583 | ||
584 | nrc = (u32)(nr & UINT_MAX); | |
585 | ||
586 | nr = sysconf(_SC_NPROCESSORS_ONLN); | |
587 | if (nr < 0) | |
588 | return -1; | |
589 | ||
590 | nra = (u32)(nr & UINT_MAX); | |
591 | ||
592 | ret = do_write(fd, &nrc, sizeof(nrc)); | |
593 | if (ret < 0) | |
594 | return ret; | |
595 | ||
596 | return do_write(fd, &nra, sizeof(nra)); | |
597 | } | |
598 | ||
599 | static int write_event_desc(int fd, struct perf_header *h __used, | |
600 | struct perf_evlist *evlist) | |
601 | { | |
602 | struct perf_evsel *attr; | |
603 | u32 nre = 0, nri, sz; | |
604 | int ret; | |
605 | ||
606 | list_for_each_entry(attr, &evlist->entries, node) | |
607 | nre++; | |
608 | ||
609 | /* | |
610 | * write number of events | |
611 | */ | |
612 | ret = do_write(fd, &nre, sizeof(nre)); | |
613 | if (ret < 0) | |
614 | return ret; | |
615 | ||
616 | /* | |
617 | * size of perf_event_attr struct | |
618 | */ | |
619 | sz = (u32)sizeof(attr->attr); | |
620 | ret = do_write(fd, &sz, sizeof(sz)); | |
621 | if (ret < 0) | |
622 | return ret; | |
623 | ||
624 | list_for_each_entry(attr, &evlist->entries, node) { | |
625 | ||
626 | ret = do_write(fd, &attr->attr, sz); | |
627 | if (ret < 0) | |
628 | return ret; | |
629 | /* | |
630 | * write number of unique id per event | |
631 | * there is one id per instance of an event | |
632 | * | |
633 | * copy into an nri to be independent of the | |
634 | * type of ids, | |
635 | */ | |
636 | nri = attr->ids; | |
637 | ret = do_write(fd, &nri, sizeof(nri)); | |
638 | if (ret < 0) | |
639 | return ret; | |
640 | ||
641 | /* | |
642 | * write event string as passed on cmdline | |
643 | */ | |
7289f83c | 644 | ret = do_write_string(fd, perf_evsel__name(attr)); |
fbe96f29 SE |
645 | if (ret < 0) |
646 | return ret; | |
647 | /* | |
648 | * write unique ids for this event | |
649 | */ | |
650 | ret = do_write(fd, attr->id, attr->ids * sizeof(u64)); | |
651 | if (ret < 0) | |
652 | return ret; | |
653 | } | |
654 | return 0; | |
655 | } | |
656 | ||
657 | static int write_cmdline(int fd, struct perf_header *h __used, | |
658 | struct perf_evlist *evlist __used) | |
659 | { | |
660 | char buf[MAXPATHLEN]; | |
661 | char proc[32]; | |
662 | u32 i, n; | |
663 | int ret; | |
664 | ||
665 | /* | |
666 | * actual atual path to perf binary | |
667 | */ | |
668 | sprintf(proc, "/proc/%d/exe", getpid()); | |
669 | ret = readlink(proc, buf, sizeof(buf)); | |
670 | if (ret <= 0) | |
671 | return -1; | |
672 | ||
673 | /* readlink() does not add null termination */ | |
674 | buf[ret] = '\0'; | |
675 | ||
676 | /* account for binary path */ | |
677 | n = header_argc + 1; | |
678 | ||
679 | ret = do_write(fd, &n, sizeof(n)); | |
680 | if (ret < 0) | |
681 | return ret; | |
682 | ||
683 | ret = do_write_string(fd, buf); | |
684 | if (ret < 0) | |
685 | return ret; | |
686 | ||
687 | for (i = 0 ; i < header_argc; i++) { | |
688 | ret = do_write_string(fd, header_argv[i]); | |
689 | if (ret < 0) | |
690 | return ret; | |
691 | } | |
692 | return 0; | |
693 | } | |
694 | ||
695 | #define CORE_SIB_FMT \ | |
696 | "/sys/devices/system/cpu/cpu%d/topology/core_siblings_list" | |
697 | #define THRD_SIB_FMT \ | |
698 | "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list" | |
699 | ||
700 | struct cpu_topo { | |
701 | u32 core_sib; | |
702 | u32 thread_sib; | |
703 | char **core_siblings; | |
704 | char **thread_siblings; | |
705 | }; | |
706 | ||
707 | static int build_cpu_topo(struct cpu_topo *tp, int cpu) | |
708 | { | |
709 | FILE *fp; | |
710 | char filename[MAXPATHLEN]; | |
711 | char *buf = NULL, *p; | |
712 | size_t len = 0; | |
713 | u32 i = 0; | |
714 | int ret = -1; | |
715 | ||
716 | sprintf(filename, CORE_SIB_FMT, cpu); | |
717 | fp = fopen(filename, "r"); | |
718 | if (!fp) | |
719 | return -1; | |
720 | ||
721 | if (getline(&buf, &len, fp) <= 0) | |
722 | goto done; | |
723 | ||
724 | fclose(fp); | |
725 | ||
726 | p = strchr(buf, '\n'); | |
727 | if (p) | |
728 | *p = '\0'; | |
729 | ||
730 | for (i = 0; i < tp->core_sib; i++) { | |
731 | if (!strcmp(buf, tp->core_siblings[i])) | |
732 | break; | |
733 | } | |
734 | if (i == tp->core_sib) { | |
735 | tp->core_siblings[i] = buf; | |
736 | tp->core_sib++; | |
737 | buf = NULL; | |
738 | len = 0; | |
739 | } | |
740 | ||
741 | sprintf(filename, THRD_SIB_FMT, cpu); | |
742 | fp = fopen(filename, "r"); | |
743 | if (!fp) | |
744 | goto done; | |
745 | ||
746 | if (getline(&buf, &len, fp) <= 0) | |
747 | goto done; | |
748 | ||
749 | p = strchr(buf, '\n'); | |
750 | if (p) | |
751 | *p = '\0'; | |
752 | ||
753 | for (i = 0; i < tp->thread_sib; i++) { | |
754 | if (!strcmp(buf, tp->thread_siblings[i])) | |
755 | break; | |
756 | } | |
757 | if (i == tp->thread_sib) { | |
758 | tp->thread_siblings[i] = buf; | |
759 | tp->thread_sib++; | |
760 | buf = NULL; | |
761 | } | |
762 | ret = 0; | |
763 | done: | |
764 | if(fp) | |
765 | fclose(fp); | |
766 | free(buf); | |
767 | return ret; | |
768 | } | |
769 | ||
770 | static void free_cpu_topo(struct cpu_topo *tp) | |
771 | { | |
772 | u32 i; | |
773 | ||
774 | if (!tp) | |
775 | return; | |
776 | ||
777 | for (i = 0 ; i < tp->core_sib; i++) | |
778 | free(tp->core_siblings[i]); | |
779 | ||
780 | for (i = 0 ; i < tp->thread_sib; i++) | |
781 | free(tp->thread_siblings[i]); | |
782 | ||
783 | free(tp); | |
784 | } | |
785 | ||
786 | static struct cpu_topo *build_cpu_topology(void) | |
787 | { | |
788 | struct cpu_topo *tp; | |
789 | void *addr; | |
790 | u32 nr, i; | |
791 | size_t sz; | |
792 | long ncpus; | |
793 | int ret = -1; | |
794 | ||
795 | ncpus = sysconf(_SC_NPROCESSORS_CONF); | |
796 | if (ncpus < 0) | |
797 | return NULL; | |
798 | ||
799 | nr = (u32)(ncpus & UINT_MAX); | |
800 | ||
801 | sz = nr * sizeof(char *); | |
802 | ||
803 | addr = calloc(1, sizeof(*tp) + 2 * sz); | |
804 | if (!addr) | |
805 | return NULL; | |
806 | ||
807 | tp = addr; | |
808 | ||
809 | addr += sizeof(*tp); | |
810 | tp->core_siblings = addr; | |
811 | addr += sz; | |
812 | tp->thread_siblings = addr; | |
813 | ||
814 | for (i = 0; i < nr; i++) { | |
815 | ret = build_cpu_topo(tp, i); | |
816 | if (ret < 0) | |
817 | break; | |
818 | } | |
819 | if (ret) { | |
820 | free_cpu_topo(tp); | |
821 | tp = NULL; | |
822 | } | |
823 | return tp; | |
824 | } | |
825 | ||
826 | static int write_cpu_topology(int fd, struct perf_header *h __used, | |
827 | struct perf_evlist *evlist __used) | |
828 | { | |
829 | struct cpu_topo *tp; | |
830 | u32 i; | |
831 | int ret; | |
832 | ||
833 | tp = build_cpu_topology(); | |
834 | if (!tp) | |
835 | return -1; | |
836 | ||
837 | ret = do_write(fd, &tp->core_sib, sizeof(tp->core_sib)); | |
838 | if (ret < 0) | |
839 | goto done; | |
840 | ||
841 | for (i = 0; i < tp->core_sib; i++) { | |
842 | ret = do_write_string(fd, tp->core_siblings[i]); | |
843 | if (ret < 0) | |
844 | goto done; | |
845 | } | |
846 | ret = do_write(fd, &tp->thread_sib, sizeof(tp->thread_sib)); | |
847 | if (ret < 0) | |
848 | goto done; | |
849 | ||
850 | for (i = 0; i < tp->thread_sib; i++) { | |
851 | ret = do_write_string(fd, tp->thread_siblings[i]); | |
852 | if (ret < 0) | |
853 | break; | |
854 | } | |
855 | done: | |
856 | free_cpu_topo(tp); | |
857 | return ret; | |
858 | } | |
859 | ||
860 | ||
861 | ||
862 | static int write_total_mem(int fd, struct perf_header *h __used, | |
863 | struct perf_evlist *evlist __used) | |
864 | { | |
865 | char *buf = NULL; | |
866 | FILE *fp; | |
867 | size_t len = 0; | |
868 | int ret = -1, n; | |
869 | uint64_t mem; | |
870 | ||
871 | fp = fopen("/proc/meminfo", "r"); | |
872 | if (!fp) | |
873 | return -1; | |
874 | ||
875 | while (getline(&buf, &len, fp) > 0) { | |
876 | ret = strncmp(buf, "MemTotal:", 9); | |
877 | if (!ret) | |
878 | break; | |
879 | } | |
880 | if (!ret) { | |
881 | n = sscanf(buf, "%*s %"PRIu64, &mem); | |
882 | if (n == 1) | |
883 | ret = do_write(fd, &mem, sizeof(mem)); | |
884 | } | |
885 | free(buf); | |
886 | fclose(fp); | |
887 | return ret; | |
888 | } | |
889 | ||
890 | static int write_topo_node(int fd, int node) | |
891 | { | |
892 | char str[MAXPATHLEN]; | |
893 | char field[32]; | |
894 | char *buf = NULL, *p; | |
895 | size_t len = 0; | |
896 | FILE *fp; | |
897 | u64 mem_total, mem_free, mem; | |
898 | int ret = -1; | |
899 | ||
900 | sprintf(str, "/sys/devices/system/node/node%d/meminfo", node); | |
901 | fp = fopen(str, "r"); | |
902 | if (!fp) | |
903 | return -1; | |
904 | ||
905 | while (getline(&buf, &len, fp) > 0) { | |
906 | /* skip over invalid lines */ | |
907 | if (!strchr(buf, ':')) | |
908 | continue; | |
909 | if (sscanf(buf, "%*s %*d %s %"PRIu64, field, &mem) != 2) | |
910 | goto done; | |
911 | if (!strcmp(field, "MemTotal:")) | |
912 | mem_total = mem; | |
913 | if (!strcmp(field, "MemFree:")) | |
914 | mem_free = mem; | |
915 | } | |
916 | ||
917 | fclose(fp); | |
918 | ||
919 | ret = do_write(fd, &mem_total, sizeof(u64)); | |
920 | if (ret) | |
921 | goto done; | |
922 | ||
923 | ret = do_write(fd, &mem_free, sizeof(u64)); | |
924 | if (ret) | |
925 | goto done; | |
926 | ||
927 | ret = -1; | |
928 | sprintf(str, "/sys/devices/system/node/node%d/cpulist", node); | |
929 | ||
930 | fp = fopen(str, "r"); | |
931 | if (!fp) | |
932 | goto done; | |
933 | ||
934 | if (getline(&buf, &len, fp) <= 0) | |
935 | goto done; | |
936 | ||
937 | p = strchr(buf, '\n'); | |
938 | if (p) | |
939 | *p = '\0'; | |
940 | ||
941 | ret = do_write_string(fd, buf); | |
942 | done: | |
943 | free(buf); | |
944 | fclose(fp); | |
945 | return ret; | |
946 | } | |
947 | ||
948 | static int write_numa_topology(int fd, struct perf_header *h __used, | |
949 | struct perf_evlist *evlist __used) | |
950 | { | |
951 | char *buf = NULL; | |
952 | size_t len = 0; | |
953 | FILE *fp; | |
954 | struct cpu_map *node_map = NULL; | |
955 | char *c; | |
956 | u32 nr, i, j; | |
957 | int ret = -1; | |
958 | ||
959 | fp = fopen("/sys/devices/system/node/online", "r"); | |
960 | if (!fp) | |
961 | return -1; | |
962 | ||
963 | if (getline(&buf, &len, fp) <= 0) | |
964 | goto done; | |
965 | ||
966 | c = strchr(buf, '\n'); | |
967 | if (c) | |
968 | *c = '\0'; | |
969 | ||
970 | node_map = cpu_map__new(buf); | |
971 | if (!node_map) | |
972 | goto done; | |
973 | ||
974 | nr = (u32)node_map->nr; | |
975 | ||
976 | ret = do_write(fd, &nr, sizeof(nr)); | |
977 | if (ret < 0) | |
978 | goto done; | |
979 | ||
980 | for (i = 0; i < nr; i++) { | |
981 | j = (u32)node_map->map[i]; | |
982 | ret = do_write(fd, &j, sizeof(j)); | |
983 | if (ret < 0) | |
984 | break; | |
985 | ||
986 | ret = write_topo_node(fd, i); | |
987 | if (ret < 0) | |
988 | break; | |
989 | } | |
990 | done: | |
991 | free(buf); | |
992 | fclose(fp); | |
993 | free(node_map); | |
994 | return ret; | |
995 | } | |
996 | ||
997 | /* | |
998 | * default get_cpuid(): nothing gets recorded | |
999 | * actual implementation must be in arch/$(ARCH)/util/header.c | |
1000 | */ | |
1001 | int __attribute__((weak)) get_cpuid(char *buffer __used, size_t sz __used) | |
1002 | { | |
1003 | return -1; | |
1004 | } | |
1005 | ||
1006 | static int write_cpuid(int fd, struct perf_header *h __used, | |
1007 | struct perf_evlist *evlist __used) | |
1008 | { | |
1009 | char buffer[64]; | |
1010 | int ret; | |
1011 | ||
1012 | ret = get_cpuid(buffer, sizeof(buffer)); | |
1013 | if (!ret) | |
1014 | goto write_it; | |
1015 | ||
1016 | return -1; | |
1017 | write_it: | |
1018 | return do_write_string(fd, buffer); | |
1019 | } | |
1020 | ||
330aa675 SE |
1021 | static int write_branch_stack(int fd __used, struct perf_header *h __used, |
1022 | struct perf_evlist *evlist __used) | |
1023 | { | |
1024 | return 0; | |
1025 | } | |
1026 | ||
fbe96f29 SE |
1027 | static void print_hostname(struct perf_header *ph, int fd, FILE *fp) |
1028 | { | |
1029 | char *str = do_read_string(fd, ph); | |
1030 | fprintf(fp, "# hostname : %s\n", str); | |
1031 | free(str); | |
1032 | } | |
1033 | ||
1034 | static void print_osrelease(struct perf_header *ph, int fd, FILE *fp) | |
1035 | { | |
1036 | char *str = do_read_string(fd, ph); | |
1037 | fprintf(fp, "# os release : %s\n", str); | |
1038 | free(str); | |
1039 | } | |
1040 | ||
1041 | static void print_arch(struct perf_header *ph, int fd, FILE *fp) | |
1042 | { | |
1043 | char *str = do_read_string(fd, ph); | |
1044 | fprintf(fp, "# arch : %s\n", str); | |
1045 | free(str); | |
1046 | } | |
1047 | ||
1048 | static void print_cpudesc(struct perf_header *ph, int fd, FILE *fp) | |
1049 | { | |
1050 | char *str = do_read_string(fd, ph); | |
1051 | fprintf(fp, "# cpudesc : %s\n", str); | |
1052 | free(str); | |
1053 | } | |
1054 | ||
1055 | static void print_nrcpus(struct perf_header *ph, int fd, FILE *fp) | |
1056 | { | |
1057 | ssize_t ret; | |
1058 | u32 nr; | |
1059 | ||
1060 | ret = read(fd, &nr, sizeof(nr)); | |
1061 | if (ret != (ssize_t)sizeof(nr)) | |
1062 | nr = -1; /* interpreted as error */ | |
1063 | ||
1064 | if (ph->needs_swap) | |
1065 | nr = bswap_32(nr); | |
1066 | ||
1067 | fprintf(fp, "# nrcpus online : %u\n", nr); | |
1068 | ||
1069 | ret = read(fd, &nr, sizeof(nr)); | |
1070 | if (ret != (ssize_t)sizeof(nr)) | |
1071 | nr = -1; /* interpreted as error */ | |
1072 | ||
1073 | if (ph->needs_swap) | |
1074 | nr = bswap_32(nr); | |
1075 | ||
1076 | fprintf(fp, "# nrcpus avail : %u\n", nr); | |
1077 | } | |
1078 | ||
1079 | static void print_version(struct perf_header *ph, int fd, FILE *fp) | |
1080 | { | |
1081 | char *str = do_read_string(fd, ph); | |
1082 | fprintf(fp, "# perf version : %s\n", str); | |
1083 | free(str); | |
1084 | } | |
1085 | ||
1086 | static void print_cmdline(struct perf_header *ph, int fd, FILE *fp) | |
1087 | { | |
1088 | ssize_t ret; | |
1089 | char *str; | |
1090 | u32 nr, i; | |
1091 | ||
1092 | ret = read(fd, &nr, sizeof(nr)); | |
1093 | if (ret != (ssize_t)sizeof(nr)) | |
1094 | return; | |
1095 | ||
1096 | if (ph->needs_swap) | |
1097 | nr = bswap_32(nr); | |
1098 | ||
1099 | fprintf(fp, "# cmdline : "); | |
1100 | ||
1101 | for (i = 0; i < nr; i++) { | |
1102 | str = do_read_string(fd, ph); | |
1103 | fprintf(fp, "%s ", str); | |
1104 | free(str); | |
1105 | } | |
1106 | fputc('\n', fp); | |
1107 | } | |
1108 | ||
1109 | static void print_cpu_topology(struct perf_header *ph, int fd, FILE *fp) | |
1110 | { | |
1111 | ssize_t ret; | |
1112 | u32 nr, i; | |
1113 | char *str; | |
1114 | ||
1115 | ret = read(fd, &nr, sizeof(nr)); | |
1116 | if (ret != (ssize_t)sizeof(nr)) | |
1117 | return; | |
1118 | ||
1119 | if (ph->needs_swap) | |
1120 | nr = bswap_32(nr); | |
1121 | ||
1122 | for (i = 0; i < nr; i++) { | |
1123 | str = do_read_string(fd, ph); | |
1124 | fprintf(fp, "# sibling cores : %s\n", str); | |
1125 | free(str); | |
1126 | } | |
1127 | ||
1128 | ret = read(fd, &nr, sizeof(nr)); | |
1129 | if (ret != (ssize_t)sizeof(nr)) | |
1130 | return; | |
1131 | ||
1132 | if (ph->needs_swap) | |
1133 | nr = bswap_32(nr); | |
1134 | ||
1135 | for (i = 0; i < nr; i++) { | |
1136 | str = do_read_string(fd, ph); | |
1137 | fprintf(fp, "# sibling threads : %s\n", str); | |
1138 | free(str); | |
1139 | } | |
1140 | } | |
1141 | ||
1142 | static void print_event_desc(struct perf_header *ph, int fd, FILE *fp) | |
1143 | { | |
1144 | struct perf_event_attr attr; | |
1145 | uint64_t id; | |
1146 | void *buf = NULL; | |
1147 | char *str; | |
62db9068 SE |
1148 | u32 nre, sz, nr, i, j; |
1149 | ssize_t ret; | |
1150 | size_t msz; | |
fbe96f29 SE |
1151 | |
1152 | /* number of events */ | |
1153 | ret = read(fd, &nre, sizeof(nre)); | |
1154 | if (ret != (ssize_t)sizeof(nre)) | |
1155 | goto error; | |
1156 | ||
1157 | if (ph->needs_swap) | |
1158 | nre = bswap_32(nre); | |
1159 | ||
1160 | ret = read(fd, &sz, sizeof(sz)); | |
1161 | if (ret != (ssize_t)sizeof(sz)) | |
1162 | goto error; | |
1163 | ||
1164 | if (ph->needs_swap) | |
1165 | sz = bswap_32(sz); | |
1166 | ||
fbe96f29 SE |
1167 | memset(&attr, 0, sizeof(attr)); |
1168 | ||
62db9068 | 1169 | /* buffer to hold on file attr struct */ |
fbe96f29 SE |
1170 | buf = malloc(sz); |
1171 | if (!buf) | |
1172 | goto error; | |
1173 | ||
1174 | msz = sizeof(attr); | |
9fafd98f | 1175 | if (sz < msz) |
fbe96f29 SE |
1176 | msz = sz; |
1177 | ||
1178 | for (i = 0 ; i < nre; i++) { | |
1179 | ||
62db9068 SE |
1180 | /* |
1181 | * must read entire on-file attr struct to | |
1182 | * sync up with layout. | |
1183 | */ | |
fbe96f29 SE |
1184 | ret = read(fd, buf, sz); |
1185 | if (ret != (ssize_t)sz) | |
1186 | goto error; | |
1187 | ||
1188 | if (ph->needs_swap) | |
1189 | perf_event__attr_swap(buf); | |
1190 | ||
1191 | memcpy(&attr, buf, msz); | |
1192 | ||
1193 | ret = read(fd, &nr, sizeof(nr)); | |
1194 | if (ret != (ssize_t)sizeof(nr)) | |
1195 | goto error; | |
1196 | ||
1197 | if (ph->needs_swap) | |
1198 | nr = bswap_32(nr); | |
1199 | ||
1200 | str = do_read_string(fd, ph); | |
1201 | fprintf(fp, "# event : name = %s, ", str); | |
1202 | free(str); | |
1203 | ||
1204 | fprintf(fp, "type = %d, config = 0x%"PRIx64 | |
1205 | ", config1 = 0x%"PRIx64", config2 = 0x%"PRIx64, | |
1206 | attr.type, | |
1207 | (u64)attr.config, | |
1208 | (u64)attr.config1, | |
1209 | (u64)attr.config2); | |
1210 | ||
1211 | fprintf(fp, ", excl_usr = %d, excl_kern = %d", | |
1212 | attr.exclude_user, | |
1213 | attr.exclude_kernel); | |
1214 | ||
78b961ff DA |
1215 | fprintf(fp, ", excl_host = %d, excl_guest = %d", |
1216 | attr.exclude_host, | |
1217 | attr.exclude_guest); | |
1218 | ||
1219 | fprintf(fp, ", precise_ip = %d", attr.precise_ip); | |
1220 | ||
fbe96f29 SE |
1221 | if (nr) |
1222 | fprintf(fp, ", id = {"); | |
1223 | ||
1224 | for (j = 0 ; j < nr; j++) { | |
1225 | ret = read(fd, &id, sizeof(id)); | |
1226 | if (ret != (ssize_t)sizeof(id)) | |
1227 | goto error; | |
1228 | ||
1229 | if (ph->needs_swap) | |
1230 | id = bswap_64(id); | |
1231 | ||
1232 | if (j) | |
1233 | fputc(',', fp); | |
1234 | ||
1235 | fprintf(fp, " %"PRIu64, id); | |
1236 | } | |
1237 | if (nr && j == nr) | |
1238 | fprintf(fp, " }"); | |
1239 | fputc('\n', fp); | |
1240 | } | |
1241 | free(buf); | |
1242 | return; | |
1243 | error: | |
1244 | fprintf(fp, "# event desc: not available or unable to read\n"); | |
1245 | } | |
1246 | ||
1247 | static void print_total_mem(struct perf_header *h __used, int fd, FILE *fp) | |
1248 | { | |
1249 | uint64_t mem; | |
1250 | ssize_t ret; | |
1251 | ||
1252 | ret = read(fd, &mem, sizeof(mem)); | |
1253 | if (ret != sizeof(mem)) | |
1254 | goto error; | |
1255 | ||
1256 | if (h->needs_swap) | |
1257 | mem = bswap_64(mem); | |
1258 | ||
1259 | fprintf(fp, "# total memory : %"PRIu64" kB\n", mem); | |
1260 | return; | |
1261 | error: | |
1262 | fprintf(fp, "# total memory : unknown\n"); | |
1263 | } | |
1264 | ||
1265 | static void print_numa_topology(struct perf_header *h __used, int fd, FILE *fp) | |
1266 | { | |
1267 | ssize_t ret; | |
1268 | u32 nr, c, i; | |
1269 | char *str; | |
1270 | uint64_t mem_total, mem_free; | |
1271 | ||
1272 | /* nr nodes */ | |
1273 | ret = read(fd, &nr, sizeof(nr)); | |
1274 | if (ret != (ssize_t)sizeof(nr)) | |
1275 | goto error; | |
1276 | ||
1277 | if (h->needs_swap) | |
1278 | nr = bswap_32(nr); | |
1279 | ||
1280 | for (i = 0; i < nr; i++) { | |
1281 | ||
1282 | /* node number */ | |
1283 | ret = read(fd, &c, sizeof(c)); | |
1284 | if (ret != (ssize_t)sizeof(c)) | |
1285 | goto error; | |
1286 | ||
1287 | if (h->needs_swap) | |
1288 | c = bswap_32(c); | |
1289 | ||
1290 | ret = read(fd, &mem_total, sizeof(u64)); | |
1291 | if (ret != sizeof(u64)) | |
1292 | goto error; | |
1293 | ||
1294 | ret = read(fd, &mem_free, sizeof(u64)); | |
1295 | if (ret != sizeof(u64)) | |
1296 | goto error; | |
1297 | ||
1298 | if (h->needs_swap) { | |
1299 | mem_total = bswap_64(mem_total); | |
1300 | mem_free = bswap_64(mem_free); | |
1301 | } | |
1302 | ||
1303 | fprintf(fp, "# node%u meminfo : total = %"PRIu64" kB," | |
1304 | " free = %"PRIu64" kB\n", | |
1305 | c, | |
1306 | mem_total, | |
1307 | mem_free); | |
1308 | ||
1309 | str = do_read_string(fd, h); | |
1310 | fprintf(fp, "# node%u cpu list : %s\n", c, str); | |
1311 | free(str); | |
1312 | } | |
1313 | return; | |
1314 | error: | |
1315 | fprintf(fp, "# numa topology : not available\n"); | |
1316 | } | |
1317 | ||
1318 | static void print_cpuid(struct perf_header *ph, int fd, FILE *fp) | |
1319 | { | |
1320 | char *str = do_read_string(fd, ph); | |
1321 | fprintf(fp, "# cpuid : %s\n", str); | |
1322 | free(str); | |
1323 | } | |
1324 | ||
330aa675 SE |
1325 | static void print_branch_stack(struct perf_header *ph __used, int fd __used, |
1326 | FILE *fp) | |
1327 | { | |
1328 | fprintf(fp, "# contains samples with branch stack\n"); | |
1329 | } | |
1330 | ||
08d95bd2 RR |
1331 | static int __event_process_build_id(struct build_id_event *bev, |
1332 | char *filename, | |
1333 | struct perf_session *session) | |
1334 | { | |
1335 | int err = -1; | |
1336 | struct list_head *head; | |
1337 | struct machine *machine; | |
1338 | u16 misc; | |
1339 | struct dso *dso; | |
1340 | enum dso_kernel_type dso_type; | |
1341 | ||
1342 | machine = perf_session__findnew_machine(session, bev->pid); | |
1343 | if (!machine) | |
1344 | goto out; | |
1345 | ||
1346 | misc = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
1347 | ||
1348 | switch (misc) { | |
1349 | case PERF_RECORD_MISC_KERNEL: | |
1350 | dso_type = DSO_TYPE_KERNEL; | |
1351 | head = &machine->kernel_dsos; | |
1352 | break; | |
1353 | case PERF_RECORD_MISC_GUEST_KERNEL: | |
1354 | dso_type = DSO_TYPE_GUEST_KERNEL; | |
1355 | head = &machine->kernel_dsos; | |
1356 | break; | |
1357 | case PERF_RECORD_MISC_USER: | |
1358 | case PERF_RECORD_MISC_GUEST_USER: | |
1359 | dso_type = DSO_TYPE_USER; | |
1360 | head = &machine->user_dsos; | |
1361 | break; | |
1362 | default: | |
1363 | goto out; | |
1364 | } | |
1365 | ||
1366 | dso = __dsos__findnew(head, filename); | |
1367 | if (dso != NULL) { | |
1368 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; | |
1369 | ||
1370 | dso__set_build_id(dso, &bev->build_id); | |
1371 | ||
1372 | if (filename[0] == '[') | |
1373 | dso->kernel = dso_type; | |
1374 | ||
1375 | build_id__sprintf(dso->build_id, sizeof(dso->build_id), | |
1376 | sbuild_id); | |
1377 | pr_debug("build id event received for %s: %s\n", | |
1378 | dso->long_name, sbuild_id); | |
1379 | } | |
1380 | ||
1381 | err = 0; | |
1382 | out: | |
1383 | return err; | |
1384 | } | |
1385 | ||
1386 | static int perf_header__read_build_ids_abi_quirk(struct perf_header *header, | |
1387 | int input, u64 offset, u64 size) | |
1388 | { | |
1389 | struct perf_session *session = container_of(header, struct perf_session, header); | |
1390 | struct { | |
1391 | struct perf_event_header header; | |
1392 | u8 build_id[ALIGN(BUILD_ID_SIZE, sizeof(u64))]; | |
1393 | char filename[0]; | |
1394 | } old_bev; | |
1395 | struct build_id_event bev; | |
1396 | char filename[PATH_MAX]; | |
1397 | u64 limit = offset + size; | |
1398 | ||
1399 | while (offset < limit) { | |
1400 | ssize_t len; | |
1401 | ||
1402 | if (read(input, &old_bev, sizeof(old_bev)) != sizeof(old_bev)) | |
1403 | return -1; | |
1404 | ||
1405 | if (header->needs_swap) | |
1406 | perf_event_header__bswap(&old_bev.header); | |
1407 | ||
1408 | len = old_bev.header.size - sizeof(old_bev); | |
1409 | if (read(input, filename, len) != len) | |
1410 | return -1; | |
1411 | ||
1412 | bev.header = old_bev.header; | |
1413 | ||
1414 | /* | |
1415 | * As the pid is the missing value, we need to fill | |
1416 | * it properly. The header.misc value give us nice hint. | |
1417 | */ | |
1418 | bev.pid = HOST_KERNEL_ID; | |
1419 | if (bev.header.misc == PERF_RECORD_MISC_GUEST_USER || | |
1420 | bev.header.misc == PERF_RECORD_MISC_GUEST_KERNEL) | |
1421 | bev.pid = DEFAULT_GUEST_KERNEL_ID; | |
1422 | ||
1423 | memcpy(bev.build_id, old_bev.build_id, sizeof(bev.build_id)); | |
1424 | __event_process_build_id(&bev, filename, session); | |
1425 | ||
1426 | offset += bev.header.size; | |
1427 | } | |
1428 | ||
1429 | return 0; | |
1430 | } | |
1431 | ||
1432 | static int perf_header__read_build_ids(struct perf_header *header, | |
1433 | int input, u64 offset, u64 size) | |
1434 | { | |
1435 | struct perf_session *session = container_of(header, struct perf_session, header); | |
1436 | struct build_id_event bev; | |
1437 | char filename[PATH_MAX]; | |
1438 | u64 limit = offset + size, orig_offset = offset; | |
1439 | int err = -1; | |
1440 | ||
1441 | while (offset < limit) { | |
1442 | ssize_t len; | |
1443 | ||
1444 | if (read(input, &bev, sizeof(bev)) != sizeof(bev)) | |
1445 | goto out; | |
1446 | ||
1447 | if (header->needs_swap) | |
1448 | perf_event_header__bswap(&bev.header); | |
1449 | ||
1450 | len = bev.header.size - sizeof(bev); | |
1451 | if (read(input, filename, len) != len) | |
1452 | goto out; | |
1453 | /* | |
1454 | * The a1645ce1 changeset: | |
1455 | * | |
1456 | * "perf: 'perf kvm' tool for monitoring guest performance from host" | |
1457 | * | |
1458 | * Added a field to struct build_id_event that broke the file | |
1459 | * format. | |
1460 | * | |
1461 | * Since the kernel build-id is the first entry, process the | |
1462 | * table using the old format if the well known | |
1463 | * '[kernel.kallsyms]' string for the kernel build-id has the | |
1464 | * first 4 characters chopped off (where the pid_t sits). | |
1465 | */ | |
1466 | if (memcmp(filename, "nel.kallsyms]", 13) == 0) { | |
1467 | if (lseek(input, orig_offset, SEEK_SET) == (off_t)-1) | |
1468 | return -1; | |
1469 | return perf_header__read_build_ids_abi_quirk(header, input, offset, size); | |
1470 | } | |
1471 | ||
1472 | __event_process_build_id(&bev, filename, session); | |
1473 | ||
1474 | offset += bev.header.size; | |
1475 | } | |
1476 | err = 0; | |
1477 | out: | |
1478 | return err; | |
1479 | } | |
1480 | ||
2eeaaa09 | 1481 | static int process_tracing_data(struct perf_file_section *section __unused, |
f1c67db7 | 1482 | struct perf_header *ph __unused, |
da378962 | 1483 | int feat __unused, int fd, void *data) |
f1c67db7 | 1484 | { |
da378962 | 1485 | trace_report(fd, data, false); |
f1c67db7 RR |
1486 | return 0; |
1487 | } | |
1488 | ||
1489 | static int process_build_id(struct perf_file_section *section, | |
1490 | struct perf_header *ph, | |
da378962 | 1491 | int feat __unused, int fd, void *data __used) |
f1c67db7 RR |
1492 | { |
1493 | if (perf_header__read_build_ids(ph, fd, section->offset, section->size)) | |
1494 | pr_debug("Failed to read buildids, continuing...\n"); | |
1495 | return 0; | |
1496 | } | |
1497 | ||
fbe96f29 SE |
1498 | struct feature_ops { |
1499 | int (*write)(int fd, struct perf_header *h, struct perf_evlist *evlist); | |
1500 | void (*print)(struct perf_header *h, int fd, FILE *fp); | |
f1c67db7 | 1501 | int (*process)(struct perf_file_section *section, |
da378962 | 1502 | struct perf_header *h, int feat, int fd, void *data); |
fbe96f29 SE |
1503 | const char *name; |
1504 | bool full_only; | |
1505 | }; | |
1506 | ||
8cdfa78a RR |
1507 | #define FEAT_OPA(n, func) \ |
1508 | [n] = { .name = #n, .write = write_##func, .print = print_##func } | |
f1c67db7 RR |
1509 | #define FEAT_OPP(n, func) \ |
1510 | [n] = { .name = #n, .write = write_##func, .print = print_##func, \ | |
1511 | .process = process_##func } | |
8cdfa78a | 1512 | #define FEAT_OPF(n, func) \ |
f1c67db7 RR |
1513 | [n] = { .name = #n, .write = write_##func, .print = print_##func, \ |
1514 | .full_only = true } | |
8cdfa78a RR |
1515 | |
1516 | /* feature_ops not implemented: */ | |
2eeaaa09 SE |
1517 | #define print_tracing_data NULL |
1518 | #define print_build_id NULL | |
fbe96f29 SE |
1519 | |
1520 | static const struct feature_ops feat_ops[HEADER_LAST_FEATURE] = { | |
2eeaaa09 | 1521 | FEAT_OPP(HEADER_TRACING_DATA, tracing_data), |
f1c67db7 | 1522 | FEAT_OPP(HEADER_BUILD_ID, build_id), |
8cdfa78a RR |
1523 | FEAT_OPA(HEADER_HOSTNAME, hostname), |
1524 | FEAT_OPA(HEADER_OSRELEASE, osrelease), | |
1525 | FEAT_OPA(HEADER_VERSION, version), | |
1526 | FEAT_OPA(HEADER_ARCH, arch), | |
1527 | FEAT_OPA(HEADER_NRCPUS, nrcpus), | |
1528 | FEAT_OPA(HEADER_CPUDESC, cpudesc), | |
1529 | FEAT_OPA(HEADER_CPUID, cpuid), | |
1530 | FEAT_OPA(HEADER_TOTAL_MEM, total_mem), | |
1531 | FEAT_OPA(HEADER_EVENT_DESC, event_desc), | |
1532 | FEAT_OPA(HEADER_CMDLINE, cmdline), | |
1533 | FEAT_OPF(HEADER_CPU_TOPOLOGY, cpu_topology), | |
1534 | FEAT_OPF(HEADER_NUMA_TOPOLOGY, numa_topology), | |
330aa675 | 1535 | FEAT_OPA(HEADER_BRANCH_STACK, branch_stack), |
fbe96f29 SE |
1536 | }; |
1537 | ||
1538 | struct header_print_data { | |
1539 | FILE *fp; | |
1540 | bool full; /* extended list of headers */ | |
1541 | }; | |
1542 | ||
1543 | static int perf_file_section__fprintf_info(struct perf_file_section *section, | |
1544 | struct perf_header *ph, | |
1545 | int feat, int fd, void *data) | |
1546 | { | |
1547 | struct header_print_data *hd = data; | |
1548 | ||
1549 | if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) { | |
1550 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " | |
1551 | "%d, continuing...\n", section->offset, feat); | |
1552 | return 0; | |
1553 | } | |
b1e5a9be | 1554 | if (feat >= HEADER_LAST_FEATURE) { |
fbe96f29 | 1555 | pr_warning("unknown feature %d\n", feat); |
f7a8a133 | 1556 | return 0; |
fbe96f29 SE |
1557 | } |
1558 | if (!feat_ops[feat].print) | |
1559 | return 0; | |
1560 | ||
1561 | if (!feat_ops[feat].full_only || hd->full) | |
1562 | feat_ops[feat].print(ph, fd, hd->fp); | |
1563 | else | |
1564 | fprintf(hd->fp, "# %s info available, use -I to display\n", | |
1565 | feat_ops[feat].name); | |
1566 | ||
1567 | return 0; | |
1568 | } | |
1569 | ||
1570 | int perf_header__fprintf_info(struct perf_session *session, FILE *fp, bool full) | |
1571 | { | |
1572 | struct header_print_data hd; | |
1573 | struct perf_header *header = &session->header; | |
1574 | int fd = session->fd; | |
1575 | hd.fp = fp; | |
1576 | hd.full = full; | |
1577 | ||
1578 | perf_header__process_sections(header, fd, &hd, | |
1579 | perf_file_section__fprintf_info); | |
1580 | return 0; | |
1581 | } | |
1582 | ||
fbe96f29 SE |
1583 | static int do_write_feat(int fd, struct perf_header *h, int type, |
1584 | struct perf_file_section **p, | |
1585 | struct perf_evlist *evlist) | |
1586 | { | |
1587 | int err; | |
1588 | int ret = 0; | |
1589 | ||
1590 | if (perf_header__has_feat(h, type)) { | |
b1e5a9be RR |
1591 | if (!feat_ops[type].write) |
1592 | return -1; | |
fbe96f29 SE |
1593 | |
1594 | (*p)->offset = lseek(fd, 0, SEEK_CUR); | |
1595 | ||
1596 | err = feat_ops[type].write(fd, h, evlist); | |
1597 | if (err < 0) { | |
1598 | pr_debug("failed to write feature %d\n", type); | |
1599 | ||
1600 | /* undo anything written */ | |
1601 | lseek(fd, (*p)->offset, SEEK_SET); | |
1602 | ||
1603 | return -1; | |
1604 | } | |
1605 | (*p)->size = lseek(fd, 0, SEEK_CUR) - (*p)->offset; | |
1606 | (*p)++; | |
1607 | } | |
1608 | return ret; | |
1609 | } | |
1610 | ||
1c0b04d1 | 1611 | static int perf_header__adds_write(struct perf_header *header, |
361c99a6 | 1612 | struct perf_evlist *evlist, int fd) |
2ba08250 | 1613 | { |
9e827dd0 | 1614 | int nr_sections; |
fbe96f29 | 1615 | struct perf_file_section *feat_sec, *p; |
9e827dd0 FW |
1616 | int sec_size; |
1617 | u64 sec_start; | |
b1e5a9be | 1618 | int feat; |
fbe96f29 | 1619 | int err; |
9e827dd0 | 1620 | |
1c0b04d1 | 1621 | nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS); |
9e827dd0 | 1622 | if (!nr_sections) |
d5eed904 | 1623 | return 0; |
9e827dd0 | 1624 | |
fbe96f29 | 1625 | feat_sec = p = calloc(sizeof(*feat_sec), nr_sections); |
d5eed904 ACM |
1626 | if (feat_sec == NULL) |
1627 | return -ENOMEM; | |
9e827dd0 FW |
1628 | |
1629 | sec_size = sizeof(*feat_sec) * nr_sections; | |
1630 | ||
1c0b04d1 | 1631 | sec_start = header->data_offset + header->data_size; |
f887f301 | 1632 | lseek(fd, sec_start + sec_size, SEEK_SET); |
2ba08250 | 1633 | |
b1e5a9be RR |
1634 | for_each_set_bit(feat, header->adds_features, HEADER_FEAT_BITS) { |
1635 | if (do_write_feat(fd, header, feat, &p, evlist)) | |
1636 | perf_header__clear_feat(header, feat); | |
1637 | } | |
9e827dd0 | 1638 | |
f887f301 | 1639 | lseek(fd, sec_start, SEEK_SET); |
fbe96f29 SE |
1640 | /* |
1641 | * may write more than needed due to dropped feature, but | |
1642 | * this is okay, reader will skip the mising entries | |
1643 | */ | |
d5eed904 ACM |
1644 | err = do_write(fd, feat_sec, sec_size); |
1645 | if (err < 0) | |
1646 | pr_debug("failed to write feature section\n"); | |
9e827dd0 | 1647 | free(feat_sec); |
d5eed904 | 1648 | return err; |
9e827dd0 | 1649 | } |
2ba08250 | 1650 | |
8dc58101 TZ |
1651 | int perf_header__write_pipe(int fd) |
1652 | { | |
1653 | struct perf_pipe_file_header f_header; | |
1654 | int err; | |
1655 | ||
1656 | f_header = (struct perf_pipe_file_header){ | |
1657 | .magic = PERF_MAGIC, | |
1658 | .size = sizeof(f_header), | |
1659 | }; | |
1660 | ||
1661 | err = do_write(fd, &f_header, sizeof(f_header)); | |
1662 | if (err < 0) { | |
1663 | pr_debug("failed to write perf pipe header\n"); | |
1664 | return err; | |
1665 | } | |
1666 | ||
1667 | return 0; | |
1668 | } | |
1669 | ||
a91e5431 ACM |
1670 | int perf_session__write_header(struct perf_session *session, |
1671 | struct perf_evlist *evlist, | |
1672 | int fd, bool at_exit) | |
7c6a1c65 PZ |
1673 | { |
1674 | struct perf_file_header f_header; | |
1675 | struct perf_file_attr f_attr; | |
1c0b04d1 | 1676 | struct perf_header *header = &session->header; |
a91e5431 ACM |
1677 | struct perf_evsel *attr, *pair = NULL; |
1678 | int err; | |
7c6a1c65 PZ |
1679 | |
1680 | lseek(fd, sizeof(f_header), SEEK_SET); | |
1681 | ||
a91e5431 ACM |
1682 | if (session->evlist != evlist) |
1683 | pair = list_entry(session->evlist->entries.next, struct perf_evsel, node); | |
7c6a1c65 | 1684 | |
a91e5431 | 1685 | list_for_each_entry(attr, &evlist->entries, node) { |
7c6a1c65 | 1686 | attr->id_offset = lseek(fd, 0, SEEK_CUR); |
d5eed904 ACM |
1687 | err = do_write(fd, attr->id, attr->ids * sizeof(u64)); |
1688 | if (err < 0) { | |
a91e5431 | 1689 | out_err_write: |
d5eed904 ACM |
1690 | pr_debug("failed to write perf header\n"); |
1691 | return err; | |
1692 | } | |
a91e5431 ACM |
1693 | if (session->evlist != evlist) { |
1694 | err = do_write(fd, pair->id, pair->ids * sizeof(u64)); | |
1695 | if (err < 0) | |
1696 | goto out_err_write; | |
1697 | attr->ids += pair->ids; | |
1698 | pair = list_entry(pair->node.next, struct perf_evsel, node); | |
1699 | } | |
7c6a1c65 PZ |
1700 | } |
1701 | ||
1c0b04d1 | 1702 | header->attr_offset = lseek(fd, 0, SEEK_CUR); |
7c6a1c65 | 1703 | |
a91e5431 | 1704 | list_for_each_entry(attr, &evlist->entries, node) { |
7c6a1c65 PZ |
1705 | f_attr = (struct perf_file_attr){ |
1706 | .attr = attr->attr, | |
1707 | .ids = { | |
1708 | .offset = attr->id_offset, | |
1709 | .size = attr->ids * sizeof(u64), | |
1710 | } | |
1711 | }; | |
d5eed904 ACM |
1712 | err = do_write(fd, &f_attr, sizeof(f_attr)); |
1713 | if (err < 0) { | |
1714 | pr_debug("failed to write perf header attribute\n"); | |
1715 | return err; | |
1716 | } | |
7c6a1c65 PZ |
1717 | } |
1718 | ||
1c0b04d1 ACM |
1719 | header->event_offset = lseek(fd, 0, SEEK_CUR); |
1720 | header->event_size = event_count * sizeof(struct perf_trace_event_type); | |
d5eed904 | 1721 | if (events) { |
1c0b04d1 | 1722 | err = do_write(fd, events, header->event_size); |
d5eed904 ACM |
1723 | if (err < 0) { |
1724 | pr_debug("failed to write perf header events\n"); | |
1725 | return err; | |
1726 | } | |
1727 | } | |
8755a8f2 | 1728 | |
1c0b04d1 | 1729 | header->data_offset = lseek(fd, 0, SEEK_CUR); |
7c6a1c65 | 1730 | |
d5eed904 | 1731 | if (at_exit) { |
1c0b04d1 | 1732 | err = perf_header__adds_write(header, evlist, fd); |
d5eed904 ACM |
1733 | if (err < 0) |
1734 | return err; | |
1735 | } | |
9e827dd0 | 1736 | |
7c6a1c65 PZ |
1737 | f_header = (struct perf_file_header){ |
1738 | .magic = PERF_MAGIC, | |
1739 | .size = sizeof(f_header), | |
1740 | .attr_size = sizeof(f_attr), | |
1741 | .attrs = { | |
1c0b04d1 | 1742 | .offset = header->attr_offset, |
a91e5431 | 1743 | .size = evlist->nr_entries * sizeof(f_attr), |
7c6a1c65 PZ |
1744 | }, |
1745 | .data = { | |
1c0b04d1 ACM |
1746 | .offset = header->data_offset, |
1747 | .size = header->data_size, | |
7c6a1c65 | 1748 | }, |
8755a8f2 | 1749 | .event_types = { |
1c0b04d1 ACM |
1750 | .offset = header->event_offset, |
1751 | .size = header->event_size, | |
8755a8f2 | 1752 | }, |
7c6a1c65 PZ |
1753 | }; |
1754 | ||
1c0b04d1 | 1755 | memcpy(&f_header.adds_features, &header->adds_features, sizeof(header->adds_features)); |
2ba08250 | 1756 | |
7c6a1c65 | 1757 | lseek(fd, 0, SEEK_SET); |
d5eed904 ACM |
1758 | err = do_write(fd, &f_header, sizeof(f_header)); |
1759 | if (err < 0) { | |
1760 | pr_debug("failed to write perf header\n"); | |
1761 | return err; | |
1762 | } | |
1c0b04d1 | 1763 | lseek(fd, header->data_offset + header->data_size, SEEK_SET); |
7c6a1c65 | 1764 | |
1c0b04d1 | 1765 | header->frozen = 1; |
d5eed904 | 1766 | return 0; |
7c6a1c65 PZ |
1767 | } |
1768 | ||
1c0b04d1 | 1769 | static int perf_header__getbuffer64(struct perf_header *header, |
ba21594c ACM |
1770 | int fd, void *buf, size_t size) |
1771 | { | |
1e7972cc | 1772 | if (readn(fd, buf, size) <= 0) |
ba21594c ACM |
1773 | return -1; |
1774 | ||
1c0b04d1 | 1775 | if (header->needs_swap) |
ba21594c ACM |
1776 | mem_bswap_64(buf, size); |
1777 | ||
1778 | return 0; | |
1779 | } | |
1780 | ||
1c0b04d1 | 1781 | int perf_header__process_sections(struct perf_header *header, int fd, |
fbe96f29 | 1782 | void *data, |
1c0b04d1 | 1783 | int (*process)(struct perf_file_section *section, |
b1e5a9be RR |
1784 | struct perf_header *ph, |
1785 | int feat, int fd, void *data)) | |
2ba08250 | 1786 | { |
b1e5a9be | 1787 | struct perf_file_section *feat_sec, *sec; |
9e827dd0 FW |
1788 | int nr_sections; |
1789 | int sec_size; | |
b1e5a9be RR |
1790 | int feat; |
1791 | int err; | |
9e827dd0 | 1792 | |
1c0b04d1 | 1793 | nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS); |
9e827dd0 | 1794 | if (!nr_sections) |
37562eac | 1795 | return 0; |
9e827dd0 | 1796 | |
b1e5a9be | 1797 | feat_sec = sec = calloc(sizeof(*feat_sec), nr_sections); |
9e827dd0 | 1798 | if (!feat_sec) |
37562eac | 1799 | return -1; |
9e827dd0 FW |
1800 | |
1801 | sec_size = sizeof(*feat_sec) * nr_sections; | |
1802 | ||
1c0b04d1 | 1803 | lseek(fd, header->data_offset + header->data_size, SEEK_SET); |
9e827dd0 | 1804 | |
b1e5a9be RR |
1805 | err = perf_header__getbuffer64(header, fd, feat_sec, sec_size); |
1806 | if (err < 0) | |
769885f3 | 1807 | goto out_free; |
9e827dd0 | 1808 | |
b1e5a9be RR |
1809 | for_each_set_bit(feat, header->adds_features, HEADER_LAST_FEATURE) { |
1810 | err = process(sec++, header, feat, fd, data); | |
1811 | if (err < 0) | |
1812 | goto out_free; | |
2ba08250 | 1813 | } |
b1e5a9be | 1814 | err = 0; |
769885f3 | 1815 | out_free: |
37562eac ACM |
1816 | free(feat_sec); |
1817 | return err; | |
769885f3 | 1818 | } |
4778d2e4 | 1819 | |
114382a0 SE |
1820 | static const int attr_file_abi_sizes[] = { |
1821 | [0] = PERF_ATTR_SIZE_VER0, | |
1822 | [1] = PERF_ATTR_SIZE_VER1, | |
1823 | 0, | |
1824 | }; | |
1825 | ||
1826 | /* | |
1827 | * In the legacy file format, the magic number is not used to encode endianness. | |
1828 | * hdr_sz was used to encode endianness. But given that hdr_sz can vary based | |
1829 | * on ABI revisions, we need to try all combinations for all endianness to | |
1830 | * detect the endianness. | |
1831 | */ | |
1832 | static int try_all_file_abis(uint64_t hdr_sz, struct perf_header *ph) | |
73323f54 | 1833 | { |
114382a0 SE |
1834 | uint64_t ref_size, attr_size; |
1835 | int i; | |
73323f54 | 1836 | |
114382a0 SE |
1837 | for (i = 0 ; attr_file_abi_sizes[i]; i++) { |
1838 | ref_size = attr_file_abi_sizes[i] | |
1839 | + sizeof(struct perf_file_section); | |
1840 | if (hdr_sz != ref_size) { | |
1841 | attr_size = bswap_64(hdr_sz); | |
1842 | if (attr_size != ref_size) | |
1843 | continue; | |
73323f54 | 1844 | |
114382a0 SE |
1845 | ph->needs_swap = true; |
1846 | } | |
1847 | pr_debug("ABI%d perf.data file detected, need_swap=%d\n", | |
1848 | i, | |
1849 | ph->needs_swap); | |
1850 | return 0; | |
1851 | } | |
1852 | /* could not determine endianness */ | |
1853 | return -1; | |
1854 | } | |
73323f54 | 1855 | |
114382a0 SE |
1856 | #define PERF_PIPE_HDR_VER0 16 |
1857 | ||
1858 | static const size_t attr_pipe_abi_sizes[] = { | |
1859 | [0] = PERF_PIPE_HDR_VER0, | |
1860 | 0, | |
1861 | }; | |
1862 | ||
1863 | /* | |
1864 | * In the legacy pipe format, there is an implicit assumption that endiannesss | |
1865 | * between host recording the samples, and host parsing the samples is the | |
1866 | * same. This is not always the case given that the pipe output may always be | |
1867 | * redirected into a file and analyzed on a different machine with possibly a | |
1868 | * different endianness and perf_event ABI revsions in the perf tool itself. | |
1869 | */ | |
1870 | static int try_all_pipe_abis(uint64_t hdr_sz, struct perf_header *ph) | |
1871 | { | |
1872 | u64 attr_size; | |
1873 | int i; | |
1874 | ||
1875 | for (i = 0 ; attr_pipe_abi_sizes[i]; i++) { | |
1876 | if (hdr_sz != attr_pipe_abi_sizes[i]) { | |
1877 | attr_size = bswap_64(hdr_sz); | |
1878 | if (attr_size != hdr_sz) | |
1879 | continue; | |
73323f54 SE |
1880 | |
1881 | ph->needs_swap = true; | |
1882 | } | |
114382a0 | 1883 | pr_debug("Pipe ABI%d perf.data file detected\n", i); |
73323f54 SE |
1884 | return 0; |
1885 | } | |
114382a0 SE |
1886 | return -1; |
1887 | } | |
1888 | ||
1889 | static int check_magic_endian(u64 magic, uint64_t hdr_sz, | |
1890 | bool is_pipe, struct perf_header *ph) | |
1891 | { | |
1892 | int ret; | |
1893 | ||
1894 | /* check for legacy format */ | |
1895 | ret = memcmp(&magic, __perf_magic1, sizeof(magic)); | |
1896 | if (ret == 0) { | |
1897 | pr_debug("legacy perf.data format\n"); | |
1898 | if (is_pipe) | |
1899 | return try_all_pipe_abis(hdr_sz, ph); | |
1900 | ||
1901 | return try_all_file_abis(hdr_sz, ph); | |
1902 | } | |
1903 | /* | |
1904 | * the new magic number serves two purposes: | |
1905 | * - unique number to identify actual perf.data files | |
1906 | * - encode endianness of file | |
1907 | */ | |
73323f54 | 1908 | |
114382a0 SE |
1909 | /* check magic number with one endianness */ |
1910 | if (magic == __perf_magic2) | |
73323f54 SE |
1911 | return 0; |
1912 | ||
114382a0 SE |
1913 | /* check magic number with opposite endianness */ |
1914 | if (magic != __perf_magic2_sw) | |
73323f54 SE |
1915 | return -1; |
1916 | ||
1917 | ph->needs_swap = true; | |
1918 | ||
1919 | return 0; | |
1920 | } | |
1921 | ||
1c0b04d1 | 1922 | int perf_file_header__read(struct perf_file_header *header, |
37562eac ACM |
1923 | struct perf_header *ph, int fd) |
1924 | { | |
73323f54 SE |
1925 | int ret; |
1926 | ||
37562eac | 1927 | lseek(fd, 0, SEEK_SET); |
37562eac | 1928 | |
73323f54 SE |
1929 | ret = readn(fd, header, sizeof(*header)); |
1930 | if (ret <= 0) | |
37562eac ACM |
1931 | return -1; |
1932 | ||
114382a0 SE |
1933 | if (check_magic_endian(header->magic, |
1934 | header->attr_size, false, ph) < 0) { | |
1935 | pr_debug("magic/endian check failed\n"); | |
73323f54 | 1936 | return -1; |
114382a0 | 1937 | } |
ba21594c | 1938 | |
73323f54 | 1939 | if (ph->needs_swap) { |
1c0b04d1 | 1940 | mem_bswap_64(header, offsetof(struct perf_file_header, |
73323f54 | 1941 | adds_features)); |
ba21594c ACM |
1942 | } |
1943 | ||
1c0b04d1 | 1944 | if (header->size != sizeof(*header)) { |
37562eac | 1945 | /* Support the previous format */ |
1c0b04d1 ACM |
1946 | if (header->size == offsetof(typeof(*header), adds_features)) |
1947 | bitmap_zero(header->adds_features, HEADER_FEAT_BITS); | |
37562eac ACM |
1948 | else |
1949 | return -1; | |
d327fa43 | 1950 | } else if (ph->needs_swap) { |
d327fa43 DA |
1951 | /* |
1952 | * feature bitmap is declared as an array of unsigned longs -- | |
1953 | * not good since its size can differ between the host that | |
1954 | * generated the data file and the host analyzing the file. | |
1955 | * | |
1956 | * We need to handle endianness, but we don't know the size of | |
1957 | * the unsigned long where the file was generated. Take a best | |
1958 | * guess at determining it: try 64-bit swap first (ie., file | |
1959 | * created on a 64-bit host), and check if the hostname feature | |
1960 | * bit is set (this feature bit is forced on as of fbe96f2). | |
1961 | * If the bit is not, undo the 64-bit swap and try a 32-bit | |
1962 | * swap. If the hostname bit is still not set (e.g., older data | |
1963 | * file), punt and fallback to the original behavior -- | |
1964 | * clearing all feature bits and setting buildid. | |
1965 | */ | |
80c0120a DA |
1966 | mem_bswap_64(&header->adds_features, |
1967 | BITS_TO_U64(HEADER_FEAT_BITS)); | |
d327fa43 DA |
1968 | |
1969 | if (!test_bit(HEADER_HOSTNAME, header->adds_features)) { | |
80c0120a DA |
1970 | /* unswap as u64 */ |
1971 | mem_bswap_64(&header->adds_features, | |
1972 | BITS_TO_U64(HEADER_FEAT_BITS)); | |
1973 | ||
1974 | /* unswap as u32 */ | |
1975 | mem_bswap_32(&header->adds_features, | |
1976 | BITS_TO_U32(HEADER_FEAT_BITS)); | |
d327fa43 DA |
1977 | } |
1978 | ||
1979 | if (!test_bit(HEADER_HOSTNAME, header->adds_features)) { | |
1980 | bitmap_zero(header->adds_features, HEADER_FEAT_BITS); | |
1981 | set_bit(HEADER_BUILD_ID, header->adds_features); | |
1982 | } | |
4778d2e4 | 1983 | } |
9e827dd0 | 1984 | |
1c0b04d1 | 1985 | memcpy(&ph->adds_features, &header->adds_features, |
ba21594c | 1986 | sizeof(ph->adds_features)); |
37562eac | 1987 | |
1c0b04d1 ACM |
1988 | ph->event_offset = header->event_types.offset; |
1989 | ph->event_size = header->event_types.size; | |
1990 | ph->data_offset = header->data.offset; | |
1991 | ph->data_size = header->data.size; | |
37562eac ACM |
1992 | return 0; |
1993 | } | |
1994 | ||
1c0b04d1 | 1995 | static int perf_file_section__process(struct perf_file_section *section, |
ba21594c | 1996 | struct perf_header *ph, |
da378962 | 1997 | int feat, int fd, void *data) |
37562eac | 1998 | { |
1c0b04d1 | 1999 | if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) { |
9486aa38 | 2000 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " |
1c0b04d1 | 2001 | "%d, continuing...\n", section->offset, feat); |
37562eac ACM |
2002 | return 0; |
2003 | } | |
2004 | ||
b1e5a9be RR |
2005 | if (feat >= HEADER_LAST_FEATURE) { |
2006 | pr_debug("unknown feature %d, continuing...\n", feat); | |
2007 | return 0; | |
2008 | } | |
2009 | ||
f1c67db7 RR |
2010 | if (!feat_ops[feat].process) |
2011 | return 0; | |
37562eac | 2012 | |
da378962 | 2013 | return feat_ops[feat].process(section, ph, feat, fd, data); |
37562eac | 2014 | } |
2ba08250 | 2015 | |
1c0b04d1 | 2016 | static int perf_file_header__read_pipe(struct perf_pipe_file_header *header, |
454c407e TZ |
2017 | struct perf_header *ph, int fd, |
2018 | bool repipe) | |
7c6a1c65 | 2019 | { |
73323f54 SE |
2020 | int ret; |
2021 | ||
2022 | ret = readn(fd, header, sizeof(*header)); | |
2023 | if (ret <= 0) | |
2024 | return -1; | |
2025 | ||
114382a0 SE |
2026 | if (check_magic_endian(header->magic, header->size, true, ph) < 0) { |
2027 | pr_debug("endian/magic failed\n"); | |
8dc58101 | 2028 | return -1; |
114382a0 SE |
2029 | } |
2030 | ||
2031 | if (ph->needs_swap) | |
2032 | header->size = bswap_64(header->size); | |
8dc58101 | 2033 | |
1c0b04d1 | 2034 | if (repipe && do_write(STDOUT_FILENO, header, sizeof(*header)) < 0) |
454c407e TZ |
2035 | return -1; |
2036 | ||
8dc58101 TZ |
2037 | return 0; |
2038 | } | |
2039 | ||
2040 | static int perf_header__read_pipe(struct perf_session *session, int fd) | |
2041 | { | |
1c0b04d1 | 2042 | struct perf_header *header = &session->header; |
8dc58101 TZ |
2043 | struct perf_pipe_file_header f_header; |
2044 | ||
1c0b04d1 | 2045 | if (perf_file_header__read_pipe(&f_header, header, fd, |
454c407e | 2046 | session->repipe) < 0) { |
8dc58101 TZ |
2047 | pr_debug("incompatible file format\n"); |
2048 | return -EINVAL; | |
2049 | } | |
2050 | ||
2051 | session->fd = fd; | |
2052 | ||
2053 | return 0; | |
2054 | } | |
2055 | ||
69996df4 SE |
2056 | static int read_attr(int fd, struct perf_header *ph, |
2057 | struct perf_file_attr *f_attr) | |
2058 | { | |
2059 | struct perf_event_attr *attr = &f_attr->attr; | |
2060 | size_t sz, left; | |
2061 | size_t our_sz = sizeof(f_attr->attr); | |
2062 | int ret; | |
2063 | ||
2064 | memset(f_attr, 0, sizeof(*f_attr)); | |
2065 | ||
2066 | /* read minimal guaranteed structure */ | |
2067 | ret = readn(fd, attr, PERF_ATTR_SIZE_VER0); | |
2068 | if (ret <= 0) { | |
2069 | pr_debug("cannot read %d bytes of header attr\n", | |
2070 | PERF_ATTR_SIZE_VER0); | |
2071 | return -1; | |
2072 | } | |
2073 | ||
2074 | /* on file perf_event_attr size */ | |
2075 | sz = attr->size; | |
114382a0 | 2076 | |
69996df4 SE |
2077 | if (ph->needs_swap) |
2078 | sz = bswap_32(sz); | |
2079 | ||
2080 | if (sz == 0) { | |
2081 | /* assume ABI0 */ | |
2082 | sz = PERF_ATTR_SIZE_VER0; | |
2083 | } else if (sz > our_sz) { | |
2084 | pr_debug("file uses a more recent and unsupported ABI" | |
2085 | " (%zu bytes extra)\n", sz - our_sz); | |
2086 | return -1; | |
2087 | } | |
2088 | /* what we have not yet read and that we know about */ | |
2089 | left = sz - PERF_ATTR_SIZE_VER0; | |
2090 | if (left) { | |
2091 | void *ptr = attr; | |
2092 | ptr += PERF_ATTR_SIZE_VER0; | |
2093 | ||
2094 | ret = readn(fd, ptr, left); | |
2095 | } | |
2096 | /* read perf_file_section, ids are read in caller */ | |
2097 | ret = readn(fd, &f_attr->ids, sizeof(f_attr->ids)); | |
2098 | ||
2099 | return ret <= 0 ? -1 : 0; | |
2100 | } | |
2101 | ||
da378962 ACM |
2102 | static int perf_evsel__set_tracepoint_name(struct perf_evsel *evsel, |
2103 | struct pevent *pevent) | |
cb9dd49e | 2104 | { |
da378962 ACM |
2105 | struct event_format *event = pevent_find_event(pevent, |
2106 | evsel->attr.config); | |
cb9dd49e ACM |
2107 | char bf[128]; |
2108 | ||
2109 | if (event == NULL) | |
2110 | return -1; | |
2111 | ||
2112 | snprintf(bf, sizeof(bf), "%s:%s", event->system, event->name); | |
2113 | evsel->name = strdup(bf); | |
2114 | if (event->name == NULL) | |
2115 | return -1; | |
2116 | ||
2117 | return 0; | |
2118 | } | |
2119 | ||
da378962 ACM |
2120 | static int perf_evlist__set_tracepoint_names(struct perf_evlist *evlist, |
2121 | struct pevent *pevent) | |
cb9dd49e ACM |
2122 | { |
2123 | struct perf_evsel *pos; | |
2124 | ||
2125 | list_for_each_entry(pos, &evlist->entries, node) { | |
2126 | if (pos->attr.type == PERF_TYPE_TRACEPOINT && | |
da378962 | 2127 | perf_evsel__set_tracepoint_name(pos, pevent)) |
cb9dd49e ACM |
2128 | return -1; |
2129 | } | |
2130 | ||
2131 | return 0; | |
2132 | } | |
2133 | ||
a91e5431 | 2134 | int perf_session__read_header(struct perf_session *session, int fd) |
8dc58101 | 2135 | { |
1c0b04d1 | 2136 | struct perf_header *header = &session->header; |
ba21594c | 2137 | struct perf_file_header f_header; |
7c6a1c65 PZ |
2138 | struct perf_file_attr f_attr; |
2139 | u64 f_id; | |
7c6a1c65 PZ |
2140 | int nr_attrs, nr_ids, i, j; |
2141 | ||
a91e5431 ACM |
2142 | session->evlist = perf_evlist__new(NULL, NULL); |
2143 | if (session->evlist == NULL) | |
2144 | return -ENOMEM; | |
2145 | ||
8dc58101 TZ |
2146 | if (session->fd_pipe) |
2147 | return perf_header__read_pipe(session, fd); | |
2148 | ||
69996df4 | 2149 | if (perf_file_header__read(&f_header, header, fd) < 0) |
4dc0a04b | 2150 | return -EINVAL; |
7c6a1c65 | 2151 | |
69996df4 | 2152 | nr_attrs = f_header.attrs.size / f_header.attr_size; |
7c6a1c65 PZ |
2153 | lseek(fd, f_header.attrs.offset, SEEK_SET); |
2154 | ||
2155 | for (i = 0; i < nr_attrs; i++) { | |
a91e5431 | 2156 | struct perf_evsel *evsel; |
1c222bce | 2157 | off_t tmp; |
7c6a1c65 | 2158 | |
69996df4 | 2159 | if (read_attr(fd, header, &f_attr) < 0) |
769885f3 | 2160 | goto out_errno; |
ba21594c | 2161 | |
eda3913b DA |
2162 | if (header->needs_swap) |
2163 | perf_event__attr_swap(&f_attr.attr); | |
2164 | ||
1c222bce | 2165 | tmp = lseek(fd, 0, SEEK_CUR); |
a91e5431 | 2166 | evsel = perf_evsel__new(&f_attr.attr, i); |
7c6a1c65 | 2167 | |
a91e5431 ACM |
2168 | if (evsel == NULL) |
2169 | goto out_delete_evlist; | |
2170 | /* | |
2171 | * Do it before so that if perf_evsel__alloc_id fails, this | |
2172 | * entry gets purged too at perf_evlist__delete(). | |
2173 | */ | |
2174 | perf_evlist__add(session->evlist, evsel); | |
7c6a1c65 PZ |
2175 | |
2176 | nr_ids = f_attr.ids.size / sizeof(u64); | |
a91e5431 ACM |
2177 | /* |
2178 | * We don't have the cpu and thread maps on the header, so | |
2179 | * for allocating the perf_sample_id table we fake 1 cpu and | |
2180 | * hattr->ids threads. | |
2181 | */ | |
2182 | if (perf_evsel__alloc_id(evsel, 1, nr_ids)) | |
2183 | goto out_delete_evlist; | |
2184 | ||
7c6a1c65 PZ |
2185 | lseek(fd, f_attr.ids.offset, SEEK_SET); |
2186 | ||
2187 | for (j = 0; j < nr_ids; j++) { | |
1c0b04d1 | 2188 | if (perf_header__getbuffer64(header, fd, &f_id, sizeof(f_id))) |
769885f3 | 2189 | goto out_errno; |
7c6a1c65 | 2190 | |
a91e5431 | 2191 | perf_evlist__id_add(session->evlist, evsel, 0, j, f_id); |
7c6a1c65 | 2192 | } |
11deb1f9 | 2193 | |
7c6a1c65 PZ |
2194 | lseek(fd, tmp, SEEK_SET); |
2195 | } | |
2196 | ||
d04b35f8 ACM |
2197 | symbol_conf.nr_events = nr_attrs; |
2198 | ||
8755a8f2 AV |
2199 | if (f_header.event_types.size) { |
2200 | lseek(fd, f_header.event_types.offset, SEEK_SET); | |
2201 | events = malloc(f_header.event_types.size); | |
4dc0a04b ACM |
2202 | if (events == NULL) |
2203 | return -ENOMEM; | |
1c0b04d1 | 2204 | if (perf_header__getbuffer64(header, fd, events, |
ba21594c | 2205 | f_header.event_types.size)) |
769885f3 | 2206 | goto out_errno; |
8755a8f2 AV |
2207 | event_count = f_header.event_types.size / sizeof(struct perf_trace_event_type); |
2208 | } | |
03456a15 | 2209 | |
da378962 | 2210 | perf_header__process_sections(header, fd, &session->pevent, |
fbe96f29 | 2211 | perf_file_section__process); |
4778d2e4 | 2212 | |
1c0b04d1 | 2213 | lseek(fd, header->data_offset, SEEK_SET); |
7c6a1c65 | 2214 | |
da378962 | 2215 | if (perf_evlist__set_tracepoint_names(session->evlist, session->pevent)) |
cb9dd49e ACM |
2216 | goto out_delete_evlist; |
2217 | ||
1c0b04d1 | 2218 | header->frozen = 1; |
4dc0a04b | 2219 | return 0; |
769885f3 ACM |
2220 | out_errno: |
2221 | return -errno; | |
a91e5431 ACM |
2222 | |
2223 | out_delete_evlist: | |
2224 | perf_evlist__delete(session->evlist); | |
2225 | session->evlist = NULL; | |
2226 | return -ENOMEM; | |
7c6a1c65 | 2227 | } |
0d3a5c88 | 2228 | |
45694aa7 | 2229 | int perf_event__synthesize_attr(struct perf_tool *tool, |
d20deb64 | 2230 | struct perf_event_attr *attr, u16 ids, u64 *id, |
743eb868 | 2231 | perf_event__handler_t process) |
2c46dbb5 | 2232 | { |
8115d60c | 2233 | union perf_event *ev; |
2c46dbb5 TZ |
2234 | size_t size; |
2235 | int err; | |
2236 | ||
2237 | size = sizeof(struct perf_event_attr); | |
2238 | size = ALIGN(size, sizeof(u64)); | |
2239 | size += sizeof(struct perf_event_header); | |
2240 | size += ids * sizeof(u64); | |
2241 | ||
2242 | ev = malloc(size); | |
2243 | ||
ce47dc56 CS |
2244 | if (ev == NULL) |
2245 | return -ENOMEM; | |
2246 | ||
2c46dbb5 TZ |
2247 | ev->attr.attr = *attr; |
2248 | memcpy(ev->attr.id, id, ids * sizeof(u64)); | |
2249 | ||
2250 | ev->attr.header.type = PERF_RECORD_HEADER_ATTR; | |
2251 | ev->attr.header.size = size; | |
2252 | ||
45694aa7 | 2253 | err = process(tool, ev, NULL, NULL); |
2c46dbb5 TZ |
2254 | |
2255 | free(ev); | |
2256 | ||
2257 | return err; | |
2258 | } | |
2259 | ||
45694aa7 | 2260 | int perf_event__synthesize_attrs(struct perf_tool *tool, |
d20deb64 | 2261 | struct perf_session *session, |
a91e5431 | 2262 | perf_event__handler_t process) |
2c46dbb5 | 2263 | { |
a91e5431 ACM |
2264 | struct perf_evsel *attr; |
2265 | int err = 0; | |
2c46dbb5 | 2266 | |
a91e5431 | 2267 | list_for_each_entry(attr, &session->evlist->entries, node) { |
45694aa7 | 2268 | err = perf_event__synthesize_attr(tool, &attr->attr, attr->ids, |
743eb868 | 2269 | attr->id, process); |
2c46dbb5 TZ |
2270 | if (err) { |
2271 | pr_debug("failed to create perf header attribute\n"); | |
2272 | return err; | |
2273 | } | |
2274 | } | |
2275 | ||
2276 | return err; | |
2277 | } | |
2278 | ||
8115d60c | 2279 | int perf_event__process_attr(union perf_event *event, |
10d0f086 | 2280 | struct perf_evlist **pevlist) |
2c46dbb5 | 2281 | { |
2c46dbb5 | 2282 | unsigned int i, ids, n_ids; |
a91e5431 | 2283 | struct perf_evsel *evsel; |
10d0f086 | 2284 | struct perf_evlist *evlist = *pevlist; |
2c46dbb5 | 2285 | |
10d0f086 ACM |
2286 | if (evlist == NULL) { |
2287 | *pevlist = evlist = perf_evlist__new(NULL, NULL); | |
2288 | if (evlist == NULL) | |
a91e5431 ACM |
2289 | return -ENOMEM; |
2290 | } | |
2291 | ||
10d0f086 | 2292 | evsel = perf_evsel__new(&event->attr.attr, evlist->nr_entries); |
a91e5431 | 2293 | if (evsel == NULL) |
2c46dbb5 TZ |
2294 | return -ENOMEM; |
2295 | ||
10d0f086 | 2296 | perf_evlist__add(evlist, evsel); |
a91e5431 | 2297 | |
8115d60c ACM |
2298 | ids = event->header.size; |
2299 | ids -= (void *)&event->attr.id - (void *)event; | |
2c46dbb5 | 2300 | n_ids = ids / sizeof(u64); |
a91e5431 ACM |
2301 | /* |
2302 | * We don't have the cpu and thread maps on the header, so | |
2303 | * for allocating the perf_sample_id table we fake 1 cpu and | |
2304 | * hattr->ids threads. | |
2305 | */ | |
2306 | if (perf_evsel__alloc_id(evsel, 1, n_ids)) | |
2307 | return -ENOMEM; | |
2c46dbb5 TZ |
2308 | |
2309 | for (i = 0; i < n_ids; i++) { | |
10d0f086 | 2310 | perf_evlist__id_add(evlist, evsel, 0, i, event->attr.id[i]); |
2c46dbb5 TZ |
2311 | } |
2312 | ||
2c46dbb5 TZ |
2313 | return 0; |
2314 | } | |
cd19a035 | 2315 | |
45694aa7 | 2316 | int perf_event__synthesize_event_type(struct perf_tool *tool, |
d20deb64 | 2317 | u64 event_id, char *name, |
8115d60c | 2318 | perf_event__handler_t process, |
743eb868 | 2319 | struct machine *machine) |
cd19a035 | 2320 | { |
8115d60c | 2321 | union perf_event ev; |
cd19a035 TZ |
2322 | size_t size = 0; |
2323 | int err = 0; | |
2324 | ||
2325 | memset(&ev, 0, sizeof(ev)); | |
2326 | ||
2327 | ev.event_type.event_type.event_id = event_id; | |
2328 | memset(ev.event_type.event_type.name, 0, MAX_EVENT_NAME); | |
2329 | strncpy(ev.event_type.event_type.name, name, MAX_EVENT_NAME - 1); | |
2330 | ||
2331 | ev.event_type.header.type = PERF_RECORD_HEADER_EVENT_TYPE; | |
f8f4b287 | 2332 | size = strlen(ev.event_type.event_type.name); |
cd19a035 TZ |
2333 | size = ALIGN(size, sizeof(u64)); |
2334 | ev.event_type.header.size = sizeof(ev.event_type) - | |
2335 | (sizeof(ev.event_type.event_type.name) - size); | |
2336 | ||
45694aa7 | 2337 | err = process(tool, &ev, NULL, machine); |
cd19a035 TZ |
2338 | |
2339 | return err; | |
2340 | } | |
2341 | ||
45694aa7 | 2342 | int perf_event__synthesize_event_types(struct perf_tool *tool, |
d20deb64 | 2343 | perf_event__handler_t process, |
743eb868 | 2344 | struct machine *machine) |
cd19a035 TZ |
2345 | { |
2346 | struct perf_trace_event_type *type; | |
2347 | int i, err = 0; | |
2348 | ||
2349 | for (i = 0; i < event_count; i++) { | |
2350 | type = &events[i]; | |
2351 | ||
45694aa7 | 2352 | err = perf_event__synthesize_event_type(tool, type->event_id, |
8115d60c | 2353 | type->name, process, |
743eb868 | 2354 | machine); |
cd19a035 TZ |
2355 | if (err) { |
2356 | pr_debug("failed to create perf header event type\n"); | |
2357 | return err; | |
2358 | } | |
2359 | } | |
2360 | ||
2361 | return err; | |
2362 | } | |
2363 | ||
45694aa7 | 2364 | int perf_event__process_event_type(struct perf_tool *tool __unused, |
743eb868 | 2365 | union perf_event *event) |
cd19a035 | 2366 | { |
8115d60c ACM |
2367 | if (perf_header__push_event(event->event_type.event_type.event_id, |
2368 | event->event_type.event_type.name) < 0) | |
cd19a035 TZ |
2369 | return -ENOMEM; |
2370 | ||
2371 | return 0; | |
2372 | } | |
9215545e | 2373 | |
45694aa7 | 2374 | int perf_event__synthesize_tracing_data(struct perf_tool *tool, int fd, |
d20deb64 | 2375 | struct perf_evlist *evlist, |
743eb868 | 2376 | perf_event__handler_t process) |
9215545e | 2377 | { |
8115d60c | 2378 | union perf_event ev; |
29208e57 | 2379 | struct tracing_data *tdata; |
9215545e | 2380 | ssize_t size = 0, aligned_size = 0, padding; |
fb7d0b3c | 2381 | int err __used = 0; |
9215545e | 2382 | |
29208e57 JO |
2383 | /* |
2384 | * We are going to store the size of the data followed | |
2385 | * by the data contents. Since the fd descriptor is a pipe, | |
2386 | * we cannot seek back to store the size of the data once | |
2387 | * we know it. Instead we: | |
2388 | * | |
2389 | * - write the tracing data to the temp file | |
2390 | * - get/write the data size to pipe | |
2391 | * - write the tracing data from the temp file | |
2392 | * to the pipe | |
2393 | */ | |
2394 | tdata = tracing_data_get(&evlist->entries, fd, true); | |
2395 | if (!tdata) | |
2396 | return -1; | |
2397 | ||
9215545e TZ |
2398 | memset(&ev, 0, sizeof(ev)); |
2399 | ||
2400 | ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA; | |
29208e57 | 2401 | size = tdata->size; |
9215545e TZ |
2402 | aligned_size = ALIGN(size, sizeof(u64)); |
2403 | padding = aligned_size - size; | |
2404 | ev.tracing_data.header.size = sizeof(ev.tracing_data); | |
2405 | ev.tracing_data.size = aligned_size; | |
2406 | ||
45694aa7 | 2407 | process(tool, &ev, NULL, NULL); |
9215545e | 2408 | |
29208e57 JO |
2409 | /* |
2410 | * The put function will copy all the tracing data | |
2411 | * stored in temp file to the pipe. | |
2412 | */ | |
2413 | tracing_data_put(tdata); | |
2414 | ||
9215545e TZ |
2415 | write_padded(fd, NULL, 0, padding); |
2416 | ||
2417 | return aligned_size; | |
2418 | } | |
2419 | ||
8115d60c ACM |
2420 | int perf_event__process_tracing_data(union perf_event *event, |
2421 | struct perf_session *session) | |
9215545e | 2422 | { |
8115d60c | 2423 | ssize_t size_read, padding, size = event->tracing_data.size; |
9215545e TZ |
2424 | off_t offset = lseek(session->fd, 0, SEEK_CUR); |
2425 | char buf[BUFSIZ]; | |
2426 | ||
2427 | /* setup for reading amidst mmap */ | |
2428 | lseek(session->fd, offset + sizeof(struct tracing_data_event), | |
2429 | SEEK_SET); | |
2430 | ||
da378962 ACM |
2431 | size_read = trace_report(session->fd, &session->pevent, |
2432 | session->repipe); | |
9215545e TZ |
2433 | padding = ALIGN(size_read, sizeof(u64)) - size_read; |
2434 | ||
2435 | if (read(session->fd, buf, padding) < 0) | |
2436 | die("reading input file"); | |
454c407e TZ |
2437 | if (session->repipe) { |
2438 | int retw = write(STDOUT_FILENO, buf, padding); | |
2439 | if (retw <= 0 || retw != padding) | |
2440 | die("repiping tracing data padding"); | |
2441 | } | |
9215545e TZ |
2442 | |
2443 | if (size_read + padding != size) | |
2444 | die("tracing data size mismatch"); | |
2445 | ||
2446 | return size_read + padding; | |
2447 | } | |
c7929e47 | 2448 | |
45694aa7 | 2449 | int perf_event__synthesize_build_id(struct perf_tool *tool, |
d20deb64 | 2450 | struct dso *pos, u16 misc, |
8115d60c | 2451 | perf_event__handler_t process, |
743eb868 | 2452 | struct machine *machine) |
c7929e47 | 2453 | { |
8115d60c | 2454 | union perf_event ev; |
c7929e47 TZ |
2455 | size_t len; |
2456 | int err = 0; | |
2457 | ||
2458 | if (!pos->hit) | |
2459 | return err; | |
2460 | ||
2461 | memset(&ev, 0, sizeof(ev)); | |
2462 | ||
2463 | len = pos->long_name_len + 1; | |
2464 | len = ALIGN(len, NAME_ALIGN); | |
2465 | memcpy(&ev.build_id.build_id, pos->build_id, sizeof(pos->build_id)); | |
2466 | ev.build_id.header.type = PERF_RECORD_HEADER_BUILD_ID; | |
2467 | ev.build_id.header.misc = misc; | |
23346f21 | 2468 | ev.build_id.pid = machine->pid; |
c7929e47 TZ |
2469 | ev.build_id.header.size = sizeof(ev.build_id) + len; |
2470 | memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len); | |
2471 | ||
45694aa7 | 2472 | err = process(tool, &ev, NULL, machine); |
c7929e47 TZ |
2473 | |
2474 | return err; | |
2475 | } | |
2476 | ||
45694aa7 | 2477 | int perf_event__process_build_id(struct perf_tool *tool __used, |
d20deb64 | 2478 | union perf_event *event, |
8115d60c | 2479 | struct perf_session *session) |
c7929e47 | 2480 | { |
8115d60c ACM |
2481 | __event_process_build_id(&event->build_id, |
2482 | event->build_id.filename, | |
a1645ce1 | 2483 | session); |
c7929e47 TZ |
2484 | return 0; |
2485 | } | |
a1ac1d3c SE |
2486 | |
2487 | void disable_buildid_cache(void) | |
2488 | { | |
2489 | no_buildid_cache = true; | |
2490 | } |