Commit | Line | Data |
---|---|---|
7c6a1c65 PZ |
1 | #include <sys/types.h> |
2 | #include <unistd.h> | |
3 | #include <stdio.h> | |
4 | #include <stdlib.h> | |
8671dab9 | 5 | #include <linux/list.h> |
7c6a1c65 PZ |
6 | |
7 | #include "util.h" | |
8 | #include "header.h" | |
03456a15 FW |
9 | #include "../perf.h" |
10 | #include "trace-event.h" | |
301a0b02 | 11 | #include "session.h" |
8671dab9 | 12 | #include "symbol.h" |
4778d2e4 | 13 | #include "debug.h" |
7c6a1c65 PZ |
14 | |
15 | /* | |
ec60a3fe | 16 | * Create new perf.data header attribute: |
7c6a1c65 | 17 | */ |
cdd6c482 | 18 | struct perf_header_attr *perf_header_attr__new(struct perf_event_attr *attr) |
7c6a1c65 PZ |
19 | { |
20 | struct perf_header_attr *self = malloc(sizeof(*self)); | |
21 | ||
dc79c0fc ACM |
22 | if (self != NULL) { |
23 | self->attr = *attr; | |
24 | self->ids = 0; | |
25 | self->size = 1; | |
26 | self->id = malloc(sizeof(u64)); | |
27 | if (self->id == NULL) { | |
28 | free(self); | |
29 | self = NULL; | |
30 | } | |
31 | } | |
7c6a1c65 PZ |
32 | |
33 | return self; | |
34 | } | |
35 | ||
11deb1f9 ACM |
36 | void perf_header_attr__delete(struct perf_header_attr *self) |
37 | { | |
38 | free(self->id); | |
39 | free(self); | |
40 | } | |
41 | ||
58754121 | 42 | int perf_header_attr__add_id(struct perf_header_attr *self, u64 id) |
7c6a1c65 PZ |
43 | { |
44 | int pos = self->ids; | |
45 | ||
46 | self->ids++; | |
47 | if (self->ids > self->size) { | |
58754121 ACM |
48 | int nsize = self->size * 2; |
49 | u64 *nid = realloc(self->id, nsize * sizeof(u64)); | |
50 | ||
51 | if (nid == NULL) | |
52 | return -1; | |
53 | ||
54 | self->size = nsize; | |
55 | self->id = nid; | |
7c6a1c65 PZ |
56 | } |
57 | self->id[pos] = id; | |
58754121 | 58 | return 0; |
7c6a1c65 PZ |
59 | } |
60 | ||
94c744b6 | 61 | int perf_header__init(struct perf_header *self) |
7c6a1c65 | 62 | { |
94c744b6 ACM |
63 | self->size = 1; |
64 | self->attr = malloc(sizeof(void *)); | |
65 | return self->attr == NULL ? -ENOMEM : 0; | |
7c6a1c65 PZ |
66 | } |
67 | ||
94c744b6 | 68 | void perf_header__exit(struct perf_header *self) |
4dc0a04b ACM |
69 | { |
70 | int i; | |
4dc0a04b | 71 | for (i = 0; i < self->attrs; ++i) |
94c744b6 | 72 | perf_header_attr__delete(self->attr[i]); |
4dc0a04b | 73 | free(self->attr); |
4dc0a04b ACM |
74 | } |
75 | ||
11deb1f9 ACM |
76 | int perf_header__add_attr(struct perf_header *self, |
77 | struct perf_header_attr *attr) | |
7c6a1c65 | 78 | { |
7c6a1c65 | 79 | if (self->frozen) |
11deb1f9 | 80 | return -1; |
7c6a1c65 | 81 | |
4dc0a04b | 82 | if (self->attrs == self->size) { |
11deb1f9 ACM |
83 | int nsize = self->size * 2; |
84 | struct perf_header_attr **nattr; | |
85 | ||
86 | nattr = realloc(self->attr, nsize * sizeof(void *)); | |
87 | if (nattr == NULL) | |
88 | return -1; | |
89 | ||
90 | self->size = nsize; | |
91 | self->attr = nattr; | |
7c6a1c65 | 92 | } |
4dc0a04b ACM |
93 | |
94 | self->attr[self->attrs++] = attr; | |
11deb1f9 | 95 | return 0; |
7c6a1c65 PZ |
96 | } |
97 | ||
ec60a3fe AV |
98 | #define MAX_EVENT_NAME 64 |
99 | ||
8755a8f2 AV |
100 | struct perf_trace_event_type { |
101 | u64 event_id; | |
ec60a3fe | 102 | char name[MAX_EVENT_NAME]; |
8755a8f2 AV |
103 | }; |
104 | ||
105 | static int event_count; | |
106 | static struct perf_trace_event_type *events; | |
107 | ||
108 | void perf_header__push_event(u64 id, const char *name) | |
109 | { | |
ec60a3fe | 110 | if (strlen(name) > MAX_EVENT_NAME) |
6beba7ad | 111 | pr_warning("Event %s will be truncated\n", name); |
8755a8f2 AV |
112 | |
113 | if (!events) { | |
114 | events = malloc(sizeof(struct perf_trace_event_type)); | |
115 | if (!events) | |
116 | die("nomem"); | |
117 | } else { | |
118 | events = realloc(events, (event_count + 1) * sizeof(struct perf_trace_event_type)); | |
119 | if (!events) | |
120 | die("nomem"); | |
121 | } | |
122 | memset(&events[event_count], 0, sizeof(struct perf_trace_event_type)); | |
123 | events[event_count].event_id = id; | |
ec60a3fe | 124 | strncpy(events[event_count].name, name, MAX_EVENT_NAME - 1); |
8755a8f2 AV |
125 | event_count++; |
126 | } | |
127 | ||
128 | char *perf_header__find_event(u64 id) | |
129 | { | |
130 | int i; | |
131 | for (i = 0 ; i < event_count; i++) { | |
132 | if (events[i].event_id == id) | |
133 | return events[i].name; | |
134 | } | |
135 | return NULL; | |
136 | } | |
137 | ||
7c6a1c65 PZ |
138 | static const char *__perf_magic = "PERFFILE"; |
139 | ||
140 | #define PERF_MAGIC (*(u64 *)__perf_magic) | |
141 | ||
7c6a1c65 | 142 | struct perf_file_attr { |
cdd6c482 | 143 | struct perf_event_attr attr; |
7c6a1c65 PZ |
144 | struct perf_file_section ids; |
145 | }; | |
146 | ||
8d06367f ACM |
147 | void perf_header__set_feat(struct perf_header *self, int feat) |
148 | { | |
149 | set_bit(feat, self->adds_features); | |
150 | } | |
151 | ||
152 | bool perf_header__has_feat(const struct perf_header *self, int feat) | |
153 | { | |
154 | return test_bit(feat, self->adds_features); | |
155 | } | |
156 | ||
3726cc75 | 157 | static int do_write(int fd, const void *buf, size_t size) |
7c6a1c65 PZ |
158 | { |
159 | while (size) { | |
160 | int ret = write(fd, buf, size); | |
161 | ||
162 | if (ret < 0) | |
d5eed904 | 163 | return -errno; |
7c6a1c65 PZ |
164 | |
165 | size -= ret; | |
166 | buf += ret; | |
167 | } | |
3726cc75 ACM |
168 | |
169 | return 0; | |
7c6a1c65 PZ |
170 | } |
171 | ||
4cf40131 ACM |
172 | #define dsos__for_each_with_build_id(pos, head) \ |
173 | list_for_each_entry(pos, head, node) \ | |
174 | if (!pos->has_build_id) \ | |
175 | continue; \ | |
176 | else | |
177 | ||
b0da954a | 178 | static int __dsos__write_buildid_table(struct list_head *head, int fd) |
8671dab9 | 179 | { |
7691b1ec | 180 | #define NAME_ALIGN 64 |
e30a3d12 | 181 | struct dso *pos; |
7691b1ec | 182 | static const char zero_buf[NAME_ALIGN]; |
e30a3d12 | 183 | |
4cf40131 | 184 | dsos__for_each_with_build_id(pos, head) { |
d5eed904 | 185 | int err; |
e30a3d12 | 186 | struct build_id_event b; |
4cf40131 | 187 | size_t len = pos->long_name_len + 1; |
e30a3d12 | 188 | |
7691b1ec | 189 | len = ALIGN(len, NAME_ALIGN); |
e30a3d12 ACM |
190 | memset(&b, 0, sizeof(b)); |
191 | memcpy(&b.build_id, pos->build_id, sizeof(pos->build_id)); | |
192 | b.header.size = sizeof(b) + len; | |
d5eed904 ACM |
193 | err = do_write(fd, &b, sizeof(b)); |
194 | if (err < 0) | |
195 | return err; | |
7691b1ec OH |
196 | err = do_write(fd, pos->long_name, pos->long_name_len + 1); |
197 | if (err < 0) | |
198 | return err; | |
d9541ed3 | 199 | err = do_write(fd, zero_buf, len - pos->long_name_len - 1); |
d5eed904 ACM |
200 | if (err < 0) |
201 | return err; | |
57f395a7 | 202 | } |
3726cc75 ACM |
203 | |
204 | return 0; | |
8671dab9 FW |
205 | } |
206 | ||
b0da954a ACM |
207 | static int dsos__write_buildid_table(int fd) |
208 | { | |
209 | int err = __dsos__write_buildid_table(&dsos__kernel, fd); | |
210 | if (err == 0) | |
211 | err = __dsos__write_buildid_table(&dsos__user, fd); | |
212 | return err; | |
213 | } | |
214 | ||
4cf40131 ACM |
215 | static int dso__cache_build_id(struct dso *self, const char *debugdir) |
216 | { | |
217 | const size_t size = PATH_MAX; | |
218 | char *filename = malloc(size), | |
219 | *linkname = malloc(size), *targetname, *sbuild_id; | |
220 | int len, err = -1; | |
221 | ||
222 | if (filename == NULL || linkname == NULL) | |
223 | goto out_free; | |
224 | ||
225 | len = snprintf(filename, size, "%s%s", debugdir, self->long_name); | |
226 | if (mkdir_p(filename, 0755)) | |
227 | goto out_free; | |
228 | ||
229 | len += snprintf(filename + len, sizeof(filename) - len, "/"); | |
230 | sbuild_id = filename + len; | |
231 | build_id__sprintf(self->build_id, sizeof(self->build_id), sbuild_id); | |
232 | ||
233 | if (access(filename, F_OK) && link(self->long_name, filename) && | |
234 | copyfile(self->long_name, filename)) | |
235 | goto out_free; | |
236 | ||
237 | len = snprintf(linkname, size, "%s/.build-id/%.2s", | |
238 | debugdir, sbuild_id); | |
239 | ||
240 | if (access(linkname, X_OK) && mkdir_p(linkname, 0755)) | |
241 | goto out_free; | |
242 | ||
243 | snprintf(linkname + len, size - len, "/%s", sbuild_id + 2); | |
244 | targetname = filename + strlen(debugdir) - 5; | |
245 | memcpy(targetname, "../..", 5); | |
246 | ||
247 | if (symlink(targetname, linkname) == 0) | |
248 | err = 0; | |
249 | out_free: | |
250 | free(filename); | |
251 | free(linkname); | |
252 | return err; | |
253 | } | |
254 | ||
255 | static int __dsos__cache_build_ids(struct list_head *head, const char *debugdir) | |
256 | { | |
257 | struct dso *pos; | |
258 | int err = 0; | |
259 | ||
260 | dsos__for_each_with_build_id(pos, head) | |
261 | if (dso__cache_build_id(pos, debugdir)) | |
262 | err = -1; | |
263 | ||
264 | return err; | |
265 | } | |
266 | ||
267 | static int dsos__cache_build_ids(void) | |
268 | { | |
269 | int err_kernel, err_user; | |
270 | char debugdir[PATH_MAX]; | |
271 | ||
272 | snprintf(debugdir, sizeof(debugdir), "%s/%s", getenv("HOME"), | |
273 | DEBUG_CACHE_DIR); | |
274 | ||
275 | if (mkdir(debugdir, 0755) != 0 && errno != EEXIST) | |
276 | return -1; | |
277 | ||
278 | err_kernel = __dsos__cache_build_ids(&dsos__kernel, debugdir); | |
279 | err_user = __dsos__cache_build_ids(&dsos__user, debugdir); | |
280 | return err_kernel || err_user ? -1 : 0; | |
281 | } | |
282 | ||
d5eed904 | 283 | static int perf_header__adds_write(struct perf_header *self, int fd) |
2ba08250 | 284 | { |
9e827dd0 FW |
285 | int nr_sections; |
286 | struct perf_file_section *feat_sec; | |
287 | int sec_size; | |
288 | u64 sec_start; | |
d5eed904 | 289 | int idx = 0, err; |
9e827dd0 | 290 | |
e30a3d12 | 291 | if (dsos__read_build_ids()) |
9e827dd0 FW |
292 | perf_header__set_feat(self, HEADER_BUILD_ID); |
293 | ||
294 | nr_sections = bitmap_weight(self->adds_features, HEADER_FEAT_BITS); | |
295 | if (!nr_sections) | |
d5eed904 | 296 | return 0; |
9e827dd0 FW |
297 | |
298 | feat_sec = calloc(sizeof(*feat_sec), nr_sections); | |
d5eed904 ACM |
299 | if (feat_sec == NULL) |
300 | return -ENOMEM; | |
9e827dd0 FW |
301 | |
302 | sec_size = sizeof(*feat_sec) * nr_sections; | |
303 | ||
304 | sec_start = self->data_offset + self->data_size; | |
305 | lseek(fd, sec_start + sec_size, SEEK_SET); | |
2ba08250 | 306 | |
3e13ab2d | 307 | if (perf_header__has_feat(self, HEADER_TRACE_INFO)) { |
9e827dd0 FW |
308 | struct perf_file_section *trace_sec; |
309 | ||
310 | trace_sec = &feat_sec[idx++]; | |
311 | ||
2ba08250 | 312 | /* Write trace info */ |
9e827dd0 | 313 | trace_sec->offset = lseek(fd, 0, SEEK_CUR); |
2ba08250 | 314 | read_tracing_data(fd, attrs, nr_counters); |
9e827dd0 | 315 | trace_sec->size = lseek(fd, 0, SEEK_CUR) - trace_sec->offset; |
2ba08250 | 316 | } |
8671dab9 | 317 | |
57f395a7 | 318 | |
9e827dd0 FW |
319 | if (perf_header__has_feat(self, HEADER_BUILD_ID)) { |
320 | struct perf_file_section *buildid_sec; | |
321 | ||
322 | buildid_sec = &feat_sec[idx++]; | |
323 | ||
324 | /* Write build-ids */ | |
325 | buildid_sec->offset = lseek(fd, 0, SEEK_CUR); | |
d5eed904 ACM |
326 | err = dsos__write_buildid_table(fd); |
327 | if (err < 0) { | |
328 | pr_debug("failed to write buildid table\n"); | |
329 | goto out_free; | |
330 | } | |
9e827dd0 | 331 | buildid_sec->size = lseek(fd, 0, SEEK_CUR) - buildid_sec->offset; |
4cf40131 | 332 | dsos__cache_build_ids(); |
8671dab9 | 333 | } |
9e827dd0 FW |
334 | |
335 | lseek(fd, sec_start, SEEK_SET); | |
d5eed904 ACM |
336 | err = do_write(fd, feat_sec, sec_size); |
337 | if (err < 0) | |
338 | pr_debug("failed to write feature section\n"); | |
339 | out_free: | |
9e827dd0 | 340 | free(feat_sec); |
d5eed904 | 341 | return err; |
9e827dd0 | 342 | } |
2ba08250 | 343 | |
d5eed904 | 344 | int perf_header__write(struct perf_header *self, int fd, bool at_exit) |
7c6a1c65 PZ |
345 | { |
346 | struct perf_file_header f_header; | |
347 | struct perf_file_attr f_attr; | |
348 | struct perf_header_attr *attr; | |
d5eed904 | 349 | int i, err; |
7c6a1c65 PZ |
350 | |
351 | lseek(fd, sizeof(f_header), SEEK_SET); | |
352 | ||
353 | ||
354 | for (i = 0; i < self->attrs; i++) { | |
355 | attr = self->attr[i]; | |
356 | ||
357 | attr->id_offset = lseek(fd, 0, SEEK_CUR); | |
d5eed904 ACM |
358 | err = do_write(fd, attr->id, attr->ids * sizeof(u64)); |
359 | if (err < 0) { | |
360 | pr_debug("failed to write perf header\n"); | |
361 | return err; | |
362 | } | |
7c6a1c65 PZ |
363 | } |
364 | ||
365 | ||
366 | self->attr_offset = lseek(fd, 0, SEEK_CUR); | |
367 | ||
368 | for (i = 0; i < self->attrs; i++) { | |
369 | attr = self->attr[i]; | |
370 | ||
371 | f_attr = (struct perf_file_attr){ | |
372 | .attr = attr->attr, | |
373 | .ids = { | |
374 | .offset = attr->id_offset, | |
375 | .size = attr->ids * sizeof(u64), | |
376 | } | |
377 | }; | |
d5eed904 ACM |
378 | err = do_write(fd, &f_attr, sizeof(f_attr)); |
379 | if (err < 0) { | |
380 | pr_debug("failed to write perf header attribute\n"); | |
381 | return err; | |
382 | } | |
7c6a1c65 PZ |
383 | } |
384 | ||
8755a8f2 AV |
385 | self->event_offset = lseek(fd, 0, SEEK_CUR); |
386 | self->event_size = event_count * sizeof(struct perf_trace_event_type); | |
d5eed904 ACM |
387 | if (events) { |
388 | err = do_write(fd, events, self->event_size); | |
389 | if (err < 0) { | |
390 | pr_debug("failed to write perf header events\n"); | |
391 | return err; | |
392 | } | |
393 | } | |
8755a8f2 | 394 | |
7c6a1c65 PZ |
395 | self->data_offset = lseek(fd, 0, SEEK_CUR); |
396 | ||
d5eed904 ACM |
397 | if (at_exit) { |
398 | err = perf_header__adds_write(self, fd); | |
399 | if (err < 0) | |
400 | return err; | |
401 | } | |
9e827dd0 | 402 | |
7c6a1c65 PZ |
403 | f_header = (struct perf_file_header){ |
404 | .magic = PERF_MAGIC, | |
405 | .size = sizeof(f_header), | |
406 | .attr_size = sizeof(f_attr), | |
407 | .attrs = { | |
408 | .offset = self->attr_offset, | |
409 | .size = self->attrs * sizeof(f_attr), | |
410 | }, | |
411 | .data = { | |
412 | .offset = self->data_offset, | |
413 | .size = self->data_size, | |
414 | }, | |
8755a8f2 AV |
415 | .event_types = { |
416 | .offset = self->event_offset, | |
417 | .size = self->event_size, | |
418 | }, | |
7c6a1c65 PZ |
419 | }; |
420 | ||
db9f11e3 | 421 | memcpy(&f_header.adds_features, &self->adds_features, sizeof(self->adds_features)); |
2ba08250 | 422 | |
7c6a1c65 | 423 | lseek(fd, 0, SEEK_SET); |
d5eed904 ACM |
424 | err = do_write(fd, &f_header, sizeof(f_header)); |
425 | if (err < 0) { | |
426 | pr_debug("failed to write perf header\n"); | |
427 | return err; | |
428 | } | |
7c6a1c65 PZ |
429 | lseek(fd, self->data_offset + self->data_size, SEEK_SET); |
430 | ||
431 | self->frozen = 1; | |
d5eed904 | 432 | return 0; |
7c6a1c65 PZ |
433 | } |
434 | ||
435 | static void do_read(int fd, void *buf, size_t size) | |
436 | { | |
437 | while (size) { | |
438 | int ret = read(fd, buf, size); | |
439 | ||
440 | if (ret < 0) | |
441 | die("failed to read"); | |
7eac7e9e PH |
442 | if (ret == 0) |
443 | die("failed to read: missing data"); | |
7c6a1c65 PZ |
444 | |
445 | size -= ret; | |
446 | buf += ret; | |
447 | } | |
448 | } | |
449 | ||
37562eac ACM |
450 | int perf_header__process_sections(struct perf_header *self, int fd, |
451 | int (*process)(struct perf_file_section *self, | |
452 | int feat, int fd)) | |
2ba08250 | 453 | { |
9e827dd0 FW |
454 | struct perf_file_section *feat_sec; |
455 | int nr_sections; | |
456 | int sec_size; | |
457 | int idx = 0; | |
37562eac | 458 | int err = 0, feat = 1; |
9e827dd0 FW |
459 | |
460 | nr_sections = bitmap_weight(self->adds_features, HEADER_FEAT_BITS); | |
461 | if (!nr_sections) | |
37562eac | 462 | return 0; |
9e827dd0 FW |
463 | |
464 | feat_sec = calloc(sizeof(*feat_sec), nr_sections); | |
465 | if (!feat_sec) | |
37562eac | 466 | return -1; |
9e827dd0 FW |
467 | |
468 | sec_size = sizeof(*feat_sec) * nr_sections; | |
469 | ||
470 | lseek(fd, self->data_offset + self->data_size, SEEK_SET); | |
471 | ||
472 | do_read(fd, feat_sec, sec_size); | |
473 | ||
37562eac ACM |
474 | while (idx < nr_sections && feat < HEADER_LAST_FEATURE) { |
475 | if (perf_header__has_feat(self, feat)) { | |
476 | struct perf_file_section *sec = &feat_sec[idx++]; | |
2ba08250 | 477 | |
37562eac ACM |
478 | err = process(sec, feat, fd); |
479 | if (err < 0) | |
480 | break; | |
481 | } | |
482 | ++feat; | |
2ba08250 | 483 | } |
4778d2e4 | 484 | |
37562eac ACM |
485 | free(feat_sec); |
486 | return err; | |
487 | }; | |
4778d2e4 | 488 | |
37562eac ACM |
489 | int perf_file_header__read(struct perf_file_header *self, |
490 | struct perf_header *ph, int fd) | |
491 | { | |
492 | lseek(fd, 0, SEEK_SET); | |
493 | do_read(fd, self, sizeof(*self)); | |
494 | ||
495 | if (self->magic != PERF_MAGIC || | |
496 | self->attr_size != sizeof(struct perf_file_attr)) | |
497 | return -1; | |
498 | ||
499 | if (self->size != sizeof(*self)) { | |
500 | /* Support the previous format */ | |
501 | if (self->size == offsetof(typeof(*self), adds_features)) | |
502 | bitmap_zero(self->adds_features, HEADER_FEAT_BITS); | |
503 | else | |
504 | return -1; | |
4778d2e4 | 505 | } |
9e827dd0 | 506 | |
37562eac ACM |
507 | memcpy(&ph->adds_features, &self->adds_features, |
508 | sizeof(self->adds_features)); | |
509 | ||
510 | ph->event_offset = self->event_types.offset; | |
511 | ph->event_size = self->event_types.size; | |
512 | ph->data_offset = self->data.offset; | |
513 | ph->data_size = self->data.size; | |
514 | return 0; | |
515 | } | |
516 | ||
517 | static int perf_file_section__process(struct perf_file_section *self, | |
518 | int feat, int fd) | |
519 | { | |
520 | if (lseek(fd, self->offset, SEEK_SET) < 0) { | |
521 | pr_debug("Failed to lseek to %Ld offset for feature %d, " | |
522 | "continuing...\n", self->offset, feat); | |
523 | return 0; | |
524 | } | |
525 | ||
526 | switch (feat) { | |
527 | case HEADER_TRACE_INFO: | |
528 | trace_report(fd); | |
529 | break; | |
530 | ||
531 | case HEADER_BUILD_ID: | |
532 | if (perf_header__read_build_ids(fd, self->offset, self->size)) | |
533 | pr_debug("Failed to read buildids, continuing...\n"); | |
534 | break; | |
535 | default: | |
536 | pr_debug("unknown feature %d, continuing...\n", feat); | |
537 | } | |
538 | ||
539 | return 0; | |
540 | } | |
2ba08250 | 541 | |
4dc0a04b | 542 | int perf_header__read(struct perf_header *self, int fd) |
7c6a1c65 | 543 | { |
7c6a1c65 PZ |
544 | struct perf_file_header f_header; |
545 | struct perf_file_attr f_attr; | |
546 | u64 f_id; | |
7c6a1c65 PZ |
547 | int nr_attrs, nr_ids, i, j; |
548 | ||
4dc0a04b ACM |
549 | if (perf_file_header__read(&f_header, self, fd) < 0) { |
550 | pr_debug("incompatible file format\n"); | |
551 | return -EINVAL; | |
552 | } | |
7c6a1c65 PZ |
553 | |
554 | nr_attrs = f_header.attrs.size / sizeof(f_attr); | |
555 | lseek(fd, f_header.attrs.offset, SEEK_SET); | |
556 | ||
557 | for (i = 0; i < nr_attrs; i++) { | |
558 | struct perf_header_attr *attr; | |
1c222bce | 559 | off_t tmp; |
7c6a1c65 PZ |
560 | |
561 | do_read(fd, &f_attr, sizeof(f_attr)); | |
1c222bce | 562 | tmp = lseek(fd, 0, SEEK_CUR); |
7c6a1c65 PZ |
563 | |
564 | attr = perf_header_attr__new(&f_attr.attr); | |
dc79c0fc | 565 | if (attr == NULL) |
4dc0a04b | 566 | return -ENOMEM; |
7c6a1c65 PZ |
567 | |
568 | nr_ids = f_attr.ids.size / sizeof(u64); | |
569 | lseek(fd, f_attr.ids.offset, SEEK_SET); | |
570 | ||
571 | for (j = 0; j < nr_ids; j++) { | |
572 | do_read(fd, &f_id, sizeof(f_id)); | |
573 | ||
4dc0a04b ACM |
574 | if (perf_header_attr__add_id(attr, f_id) < 0) { |
575 | perf_header_attr__delete(attr); | |
576 | return -ENOMEM; | |
577 | } | |
578 | } | |
579 | if (perf_header__add_attr(self, attr) < 0) { | |
580 | perf_header_attr__delete(attr); | |
581 | return -ENOMEM; | |
7c6a1c65 | 582 | } |
11deb1f9 | 583 | |
7c6a1c65 PZ |
584 | lseek(fd, tmp, SEEK_SET); |
585 | } | |
586 | ||
8755a8f2 AV |
587 | if (f_header.event_types.size) { |
588 | lseek(fd, f_header.event_types.offset, SEEK_SET); | |
589 | events = malloc(f_header.event_types.size); | |
4dc0a04b ACM |
590 | if (events == NULL) |
591 | return -ENOMEM; | |
8755a8f2 AV |
592 | do_read(fd, events, f_header.event_types.size); |
593 | event_count = f_header.event_types.size / sizeof(struct perf_trace_event_type); | |
594 | } | |
03456a15 | 595 | |
37562eac | 596 | perf_header__process_sections(self, fd, perf_file_section__process); |
4778d2e4 | 597 | |
2e01d179 | 598 | lseek(fd, self->data_offset, SEEK_SET); |
7c6a1c65 PZ |
599 | |
600 | self->frozen = 1; | |
4dc0a04b | 601 | return 0; |
7c6a1c65 | 602 | } |
0d3a5c88 FW |
603 | |
604 | u64 perf_header__sample_type(struct perf_header *header) | |
605 | { | |
606 | u64 type = 0; | |
607 | int i; | |
608 | ||
609 | for (i = 0; i < header->attrs; i++) { | |
610 | struct perf_header_attr *attr = header->attr[i]; | |
611 | ||
612 | if (!type) | |
613 | type = attr->attr.sample_type; | |
614 | else if (type != attr->attr.sample_type) | |
615 | die("non matching sample_type"); | |
616 | } | |
617 | ||
618 | return type; | |
619 | } | |
620 | ||
cdd6c482 | 621 | struct perf_event_attr * |
0d3a5c88 FW |
622 | perf_header__find_attr(u64 id, struct perf_header *header) |
623 | { | |
624 | int i; | |
625 | ||
626 | for (i = 0; i < header->attrs; i++) { | |
627 | struct perf_header_attr *attr = header->attr[i]; | |
628 | int j; | |
629 | ||
630 | for (j = 0; j < attr->ids; j++) { | |
631 | if (attr->id[j] == id) | |
632 | return &attr->attr; | |
633 | } | |
634 | } | |
635 | ||
636 | return NULL; | |
637 | } |