Commit | Line | Data |
---|---|---|
b8f46c5a XG |
1 | #define _FILE_OFFSET_BITS 64 |
2 | ||
7c6a1c65 | 3 | #include <sys/types.h> |
ba21594c | 4 | #include <byteswap.h> |
7c6a1c65 PZ |
5 | #include <unistd.h> |
6 | #include <stdio.h> | |
7 | #include <stdlib.h> | |
8671dab9 | 8 | #include <linux/list.h> |
ba21594c | 9 | #include <linux/kernel.h> |
7c6a1c65 PZ |
10 | |
11 | #include "util.h" | |
12 | #include "header.h" | |
03456a15 FW |
13 | #include "../perf.h" |
14 | #include "trace-event.h" | |
301a0b02 | 15 | #include "session.h" |
8671dab9 | 16 | #include "symbol.h" |
4778d2e4 | 17 | #include "debug.h" |
7c6a1c65 PZ |
18 | |
19 | /* | |
ec60a3fe | 20 | * Create new perf.data header attribute: |
7c6a1c65 | 21 | */ |
cdd6c482 | 22 | struct perf_header_attr *perf_header_attr__new(struct perf_event_attr *attr) |
7c6a1c65 PZ |
23 | { |
24 | struct perf_header_attr *self = malloc(sizeof(*self)); | |
25 | ||
dc79c0fc ACM |
26 | if (self != NULL) { |
27 | self->attr = *attr; | |
28 | self->ids = 0; | |
29 | self->size = 1; | |
30 | self->id = malloc(sizeof(u64)); | |
31 | if (self->id == NULL) { | |
32 | free(self); | |
33 | self = NULL; | |
34 | } | |
35 | } | |
7c6a1c65 PZ |
36 | |
37 | return self; | |
38 | } | |
39 | ||
11deb1f9 ACM |
40 | void perf_header_attr__delete(struct perf_header_attr *self) |
41 | { | |
42 | free(self->id); | |
43 | free(self); | |
44 | } | |
45 | ||
58754121 | 46 | int perf_header_attr__add_id(struct perf_header_attr *self, u64 id) |
7c6a1c65 PZ |
47 | { |
48 | int pos = self->ids; | |
49 | ||
50 | self->ids++; | |
51 | if (self->ids > self->size) { | |
58754121 ACM |
52 | int nsize = self->size * 2; |
53 | u64 *nid = realloc(self->id, nsize * sizeof(u64)); | |
54 | ||
55 | if (nid == NULL) | |
56 | return -1; | |
57 | ||
58 | self->size = nsize; | |
59 | self->id = nid; | |
7c6a1c65 PZ |
60 | } |
61 | self->id[pos] = id; | |
58754121 | 62 | return 0; |
7c6a1c65 PZ |
63 | } |
64 | ||
94c744b6 | 65 | int perf_header__init(struct perf_header *self) |
7c6a1c65 | 66 | { |
94c744b6 ACM |
67 | self->size = 1; |
68 | self->attr = malloc(sizeof(void *)); | |
69 | return self->attr == NULL ? -ENOMEM : 0; | |
7c6a1c65 PZ |
70 | } |
71 | ||
94c744b6 | 72 | void perf_header__exit(struct perf_header *self) |
4dc0a04b ACM |
73 | { |
74 | int i; | |
4dc0a04b | 75 | for (i = 0; i < self->attrs; ++i) |
94c744b6 | 76 | perf_header_attr__delete(self->attr[i]); |
4dc0a04b | 77 | free(self->attr); |
4dc0a04b ACM |
78 | } |
79 | ||
11deb1f9 ACM |
80 | int perf_header__add_attr(struct perf_header *self, |
81 | struct perf_header_attr *attr) | |
7c6a1c65 | 82 | { |
7c6a1c65 | 83 | if (self->frozen) |
11deb1f9 | 84 | return -1; |
7c6a1c65 | 85 | |
4dc0a04b | 86 | if (self->attrs == self->size) { |
11deb1f9 ACM |
87 | int nsize = self->size * 2; |
88 | struct perf_header_attr **nattr; | |
89 | ||
90 | nattr = realloc(self->attr, nsize * sizeof(void *)); | |
91 | if (nattr == NULL) | |
92 | return -1; | |
93 | ||
94 | self->size = nsize; | |
95 | self->attr = nattr; | |
7c6a1c65 | 96 | } |
4dc0a04b ACM |
97 | |
98 | self->attr[self->attrs++] = attr; | |
11deb1f9 | 99 | return 0; |
7c6a1c65 PZ |
100 | } |
101 | ||
8755a8f2 AV |
102 | static int event_count; |
103 | static struct perf_trace_event_type *events; | |
104 | ||
ae99fb2c | 105 | int perf_header__push_event(u64 id, const char *name) |
8755a8f2 | 106 | { |
ec60a3fe | 107 | if (strlen(name) > MAX_EVENT_NAME) |
6beba7ad | 108 | pr_warning("Event %s will be truncated\n", name); |
8755a8f2 AV |
109 | |
110 | if (!events) { | |
111 | events = malloc(sizeof(struct perf_trace_event_type)); | |
ae99fb2c ACM |
112 | if (events == NULL) |
113 | return -ENOMEM; | |
8755a8f2 | 114 | } else { |
ae99fb2c ACM |
115 | struct perf_trace_event_type *nevents; |
116 | ||
117 | nevents = realloc(events, (event_count + 1) * sizeof(*events)); | |
118 | if (nevents == NULL) | |
119 | return -ENOMEM; | |
120 | events = nevents; | |
8755a8f2 AV |
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 | 125 | event_count++; |
ae99fb2c | 126 | return 0; |
8755a8f2 AV |
127 | } |
128 | ||
129 | char *perf_header__find_event(u64 id) | |
130 | { | |
131 | int i; | |
132 | for (i = 0 ; i < event_count; i++) { | |
133 | if (events[i].event_id == id) | |
134 | return events[i].name; | |
135 | } | |
136 | return NULL; | |
137 | } | |
138 | ||
7c6a1c65 PZ |
139 | static const char *__perf_magic = "PERFFILE"; |
140 | ||
141 | #define PERF_MAGIC (*(u64 *)__perf_magic) | |
142 | ||
7c6a1c65 | 143 | struct perf_file_attr { |
cdd6c482 | 144 | struct perf_event_attr attr; |
7c6a1c65 PZ |
145 | struct perf_file_section ids; |
146 | }; | |
147 | ||
8d06367f ACM |
148 | void perf_header__set_feat(struct perf_header *self, int feat) |
149 | { | |
150 | set_bit(feat, self->adds_features); | |
151 | } | |
152 | ||
153 | bool perf_header__has_feat(const struct perf_header *self, int feat) | |
154 | { | |
155 | return test_bit(feat, self->adds_features); | |
156 | } | |
157 | ||
3726cc75 | 158 | static int do_write(int fd, const void *buf, size_t size) |
7c6a1c65 PZ |
159 | { |
160 | while (size) { | |
161 | int ret = write(fd, buf, size); | |
162 | ||
163 | if (ret < 0) | |
d5eed904 | 164 | return -errno; |
7c6a1c65 PZ |
165 | |
166 | size -= ret; | |
167 | buf += ret; | |
168 | } | |
3726cc75 ACM |
169 | |
170 | return 0; | |
7c6a1c65 PZ |
171 | } |
172 | ||
f92cb24c ACM |
173 | #define NAME_ALIGN 64 |
174 | ||
175 | static int write_padded(int fd, const void *bf, size_t count, | |
176 | size_t count_aligned) | |
177 | { | |
178 | static const char zero_buf[NAME_ALIGN]; | |
179 | int err = do_write(fd, bf, count); | |
180 | ||
181 | if (!err) | |
182 | err = do_write(fd, zero_buf, count_aligned - count); | |
183 | ||
184 | return err; | |
185 | } | |
186 | ||
4cf40131 ACM |
187 | #define dsos__for_each_with_build_id(pos, head) \ |
188 | list_for_each_entry(pos, head, node) \ | |
189 | if (!pos->has_build_id) \ | |
190 | continue; \ | |
191 | else | |
192 | ||
a1645ce1 ZY |
193 | static int __dsos__write_buildid_table(struct list_head *head, pid_t pid, |
194 | u16 misc, int fd) | |
8671dab9 | 195 | { |
e30a3d12 ACM |
196 | struct dso *pos; |
197 | ||
4cf40131 | 198 | dsos__for_each_with_build_id(pos, head) { |
d5eed904 | 199 | int err; |
e30a3d12 | 200 | struct build_id_event b; |
6122e4e4 | 201 | size_t len; |
e30a3d12 | 202 | |
6122e4e4 ACM |
203 | if (!pos->hit) |
204 | continue; | |
205 | len = pos->long_name_len + 1; | |
7691b1ec | 206 | len = ALIGN(len, NAME_ALIGN); |
e30a3d12 ACM |
207 | memset(&b, 0, sizeof(b)); |
208 | memcpy(&b.build_id, pos->build_id, sizeof(pos->build_id)); | |
a1645ce1 | 209 | b.pid = pid; |
a89e5abe | 210 | b.header.misc = misc; |
e30a3d12 | 211 | b.header.size = sizeof(b) + len; |
d5eed904 ACM |
212 | err = do_write(fd, &b, sizeof(b)); |
213 | if (err < 0) | |
214 | return err; | |
f92cb24c ACM |
215 | err = write_padded(fd, pos->long_name, |
216 | pos->long_name_len + 1, len); | |
d5eed904 ACM |
217 | if (err < 0) |
218 | return err; | |
57f395a7 | 219 | } |
3726cc75 ACM |
220 | |
221 | return 0; | |
8671dab9 FW |
222 | } |
223 | ||
a1645ce1 | 224 | static int dsos__write_buildid_table(struct perf_header *header, int fd) |
b0da954a | 225 | { |
a1645ce1 ZY |
226 | struct perf_session *session = container_of(header, |
227 | struct perf_session, header); | |
228 | struct rb_node *nd; | |
229 | int err = 0; | |
230 | u16 kmisc, umisc; | |
231 | ||
232 | for (nd = rb_first(&session->kerninfo_root); nd; nd = rb_next(nd)) { | |
233 | struct kernel_info *pos = rb_entry(nd, struct kernel_info, | |
234 | rb_node); | |
235 | if (is_host_kernel(pos)) { | |
236 | kmisc = PERF_RECORD_MISC_KERNEL; | |
237 | umisc = PERF_RECORD_MISC_USER; | |
238 | } else { | |
239 | kmisc = PERF_RECORD_MISC_GUEST_KERNEL; | |
240 | umisc = PERF_RECORD_MISC_GUEST_USER; | |
241 | } | |
242 | ||
243 | err = __dsos__write_buildid_table(&pos->dsos__kernel, pos->pid, | |
244 | kmisc, fd); | |
245 | if (err == 0) | |
246 | err = __dsos__write_buildid_table(&pos->dsos__user, | |
247 | pos->pid, umisc, fd); | |
248 | if (err) | |
249 | break; | |
250 | } | |
b0da954a ACM |
251 | return err; |
252 | } | |
253 | ||
ef12a141 ACM |
254 | int build_id_cache__add_s(const char *sbuild_id, const char *debugdir, |
255 | const char *name, bool is_kallsyms) | |
4cf40131 ACM |
256 | { |
257 | const size_t size = PATH_MAX; | |
258 | char *filename = malloc(size), | |
ef12a141 | 259 | *linkname = malloc(size), *targetname; |
4cf40131 ACM |
260 | int len, err = -1; |
261 | ||
262 | if (filename == NULL || linkname == NULL) | |
263 | goto out_free; | |
264 | ||
9e201442 | 265 | len = snprintf(filename, size, "%s%s%s", |
ef12a141 | 266 | debugdir, is_kallsyms ? "/" : "", name); |
4cf40131 ACM |
267 | if (mkdir_p(filename, 0755)) |
268 | goto out_free; | |
269 | ||
ef12a141 | 270 | snprintf(filename + len, sizeof(filename) - len, "/%s", sbuild_id); |
4cf40131 | 271 | |
9e201442 ACM |
272 | if (access(filename, F_OK)) { |
273 | if (is_kallsyms) { | |
274 | if (copyfile("/proc/kallsyms", filename)) | |
275 | goto out_free; | |
ef12a141 | 276 | } else if (link(name, filename) && copyfile(name, filename)) |
9e201442 ACM |
277 | goto out_free; |
278 | } | |
4cf40131 ACM |
279 | |
280 | len = snprintf(linkname, size, "%s/.build-id/%.2s", | |
281 | debugdir, sbuild_id); | |
282 | ||
283 | if (access(linkname, X_OK) && mkdir_p(linkname, 0755)) | |
284 | goto out_free; | |
285 | ||
286 | snprintf(linkname + len, size - len, "/%s", sbuild_id + 2); | |
287 | targetname = filename + strlen(debugdir) - 5; | |
288 | memcpy(targetname, "../..", 5); | |
289 | ||
290 | if (symlink(targetname, linkname) == 0) | |
291 | err = 0; | |
292 | out_free: | |
293 | free(filename); | |
294 | free(linkname); | |
295 | return err; | |
296 | } | |
297 | ||
ef12a141 ACM |
298 | static int build_id_cache__add_b(const u8 *build_id, size_t build_id_size, |
299 | const char *name, const char *debugdir, | |
300 | bool is_kallsyms) | |
301 | { | |
302 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; | |
303 | ||
304 | build_id__sprintf(build_id, build_id_size, sbuild_id); | |
305 | ||
306 | return build_id_cache__add_s(sbuild_id, debugdir, name, is_kallsyms); | |
307 | } | |
308 | ||
309 | int build_id_cache__remove_s(const char *sbuild_id, const char *debugdir) | |
310 | { | |
311 | const size_t size = PATH_MAX; | |
312 | char *filename = malloc(size), | |
313 | *linkname = malloc(size); | |
314 | int err = -1; | |
315 | ||
316 | if (filename == NULL || linkname == NULL) | |
317 | goto out_free; | |
318 | ||
319 | snprintf(linkname, size, "%s/.build-id/%.2s/%s", | |
320 | debugdir, sbuild_id, sbuild_id + 2); | |
321 | ||
322 | if (access(linkname, F_OK)) | |
323 | goto out_free; | |
324 | ||
325 | if (readlink(linkname, filename, size) < 0) | |
326 | goto out_free; | |
327 | ||
328 | if (unlink(linkname)) | |
329 | goto out_free; | |
330 | ||
331 | /* | |
332 | * Since the link is relative, we must make it absolute: | |
333 | */ | |
334 | snprintf(linkname, size, "%s/.build-id/%.2s/%s", | |
335 | debugdir, sbuild_id, filename); | |
336 | ||
337 | if (unlink(linkname)) | |
338 | goto out_free; | |
339 | ||
340 | err = 0; | |
341 | out_free: | |
342 | free(filename); | |
343 | free(linkname); | |
344 | return err; | |
345 | } | |
346 | ||
347 | static int dso__cache_build_id(struct dso *self, const char *debugdir) | |
348 | { | |
349 | bool is_kallsyms = self->kernel && self->long_name[0] != '/'; | |
350 | ||
351 | return build_id_cache__add_b(self->build_id, sizeof(self->build_id), | |
352 | self->long_name, debugdir, is_kallsyms); | |
353 | } | |
354 | ||
4cf40131 ACM |
355 | static int __dsos__cache_build_ids(struct list_head *head, const char *debugdir) |
356 | { | |
357 | struct dso *pos; | |
358 | int err = 0; | |
359 | ||
360 | dsos__for_each_with_build_id(pos, head) | |
361 | if (dso__cache_build_id(pos, debugdir)) | |
362 | err = -1; | |
363 | ||
364 | return err; | |
365 | } | |
366 | ||
a1645ce1 | 367 | static int dsos__cache_build_ids(struct perf_header *self) |
4cf40131 | 368 | { |
a1645ce1 ZY |
369 | struct perf_session *session = container_of(self, |
370 | struct perf_session, header); | |
371 | struct rb_node *nd; | |
372 | int ret = 0; | |
4cf40131 ACM |
373 | char debugdir[PATH_MAX]; |
374 | ||
375 | snprintf(debugdir, sizeof(debugdir), "%s/%s", getenv("HOME"), | |
376 | DEBUG_CACHE_DIR); | |
377 | ||
378 | if (mkdir(debugdir, 0755) != 0 && errno != EEXIST) | |
379 | return -1; | |
380 | ||
a1645ce1 ZY |
381 | for (nd = rb_first(&session->kerninfo_root); nd; nd = rb_next(nd)) { |
382 | struct kernel_info *pos = rb_entry(nd, struct kernel_info, | |
383 | rb_node); | |
384 | ret |= __dsos__cache_build_ids(&pos->dsos__kernel, debugdir); | |
385 | ret |= __dsos__cache_build_ids(&pos->dsos__user, debugdir); | |
386 | } | |
387 | return ret ? -1 : 0; | |
388 | } | |
389 | ||
390 | static bool dsos__read_build_ids(struct perf_header *self, bool with_hits) | |
391 | { | |
392 | bool ret = false; | |
393 | struct perf_session *session = container_of(self, | |
394 | struct perf_session, header); | |
395 | struct rb_node *nd; | |
396 | ||
397 | for (nd = rb_first(&session->kerninfo_root); nd; nd = rb_next(nd)) { | |
398 | struct kernel_info *pos = rb_entry(nd, struct kernel_info, | |
399 | rb_node); | |
400 | ret |= __dsos__read_build_ids(&pos->dsos__kernel, with_hits); | |
401 | ret |= __dsos__read_build_ids(&pos->dsos__user, with_hits); | |
402 | } | |
403 | ||
404 | return ret; | |
4cf40131 ACM |
405 | } |
406 | ||
d5eed904 | 407 | static int perf_header__adds_write(struct perf_header *self, int fd) |
2ba08250 | 408 | { |
9e827dd0 FW |
409 | int nr_sections; |
410 | struct perf_file_section *feat_sec; | |
411 | int sec_size; | |
412 | u64 sec_start; | |
d5eed904 | 413 | int idx = 0, err; |
9e827dd0 | 414 | |
a1645ce1 | 415 | if (dsos__read_build_ids(self, true)) |
9e827dd0 FW |
416 | perf_header__set_feat(self, HEADER_BUILD_ID); |
417 | ||
418 | nr_sections = bitmap_weight(self->adds_features, HEADER_FEAT_BITS); | |
419 | if (!nr_sections) | |
d5eed904 | 420 | return 0; |
9e827dd0 FW |
421 | |
422 | feat_sec = calloc(sizeof(*feat_sec), nr_sections); | |
d5eed904 ACM |
423 | if (feat_sec == NULL) |
424 | return -ENOMEM; | |
9e827dd0 FW |
425 | |
426 | sec_size = sizeof(*feat_sec) * nr_sections; | |
427 | ||
428 | sec_start = self->data_offset + self->data_size; | |
f887f301 | 429 | lseek(fd, sec_start + sec_size, SEEK_SET); |
2ba08250 | 430 | |
3e13ab2d | 431 | if (perf_header__has_feat(self, HEADER_TRACE_INFO)) { |
9e827dd0 FW |
432 | struct perf_file_section *trace_sec; |
433 | ||
434 | trace_sec = &feat_sec[idx++]; | |
435 | ||
2ba08250 | 436 | /* Write trace info */ |
f887f301 | 437 | trace_sec->offset = lseek(fd, 0, SEEK_CUR); |
2ba08250 | 438 | read_tracing_data(fd, attrs, nr_counters); |
f887f301 | 439 | trace_sec->size = lseek(fd, 0, SEEK_CUR) - trace_sec->offset; |
2ba08250 | 440 | } |
8671dab9 | 441 | |
57f395a7 | 442 | |
9e827dd0 FW |
443 | if (perf_header__has_feat(self, HEADER_BUILD_ID)) { |
444 | struct perf_file_section *buildid_sec; | |
445 | ||
446 | buildid_sec = &feat_sec[idx++]; | |
447 | ||
448 | /* Write build-ids */ | |
f887f301 | 449 | buildid_sec->offset = lseek(fd, 0, SEEK_CUR); |
a1645ce1 | 450 | err = dsos__write_buildid_table(self, fd); |
d5eed904 ACM |
451 | if (err < 0) { |
452 | pr_debug("failed to write buildid table\n"); | |
453 | goto out_free; | |
454 | } | |
f887f301 XG |
455 | buildid_sec->size = lseek(fd, 0, SEEK_CUR) - |
456 | buildid_sec->offset; | |
a1645ce1 | 457 | dsos__cache_build_ids(self); |
8671dab9 | 458 | } |
9e827dd0 | 459 | |
f887f301 | 460 | lseek(fd, sec_start, SEEK_SET); |
d5eed904 ACM |
461 | err = do_write(fd, feat_sec, sec_size); |
462 | if (err < 0) | |
463 | pr_debug("failed to write feature section\n"); | |
464 | out_free: | |
9e827dd0 | 465 | free(feat_sec); |
d5eed904 | 466 | return err; |
9e827dd0 | 467 | } |
2ba08250 | 468 | |
8dc58101 TZ |
469 | int perf_header__write_pipe(int fd) |
470 | { | |
471 | struct perf_pipe_file_header f_header; | |
472 | int err; | |
473 | ||
474 | f_header = (struct perf_pipe_file_header){ | |
475 | .magic = PERF_MAGIC, | |
476 | .size = sizeof(f_header), | |
477 | }; | |
478 | ||
479 | err = do_write(fd, &f_header, sizeof(f_header)); | |
480 | if (err < 0) { | |
481 | pr_debug("failed to write perf pipe header\n"); | |
482 | return err; | |
483 | } | |
484 | ||
485 | return 0; | |
486 | } | |
487 | ||
d5eed904 | 488 | int perf_header__write(struct perf_header *self, int fd, bool at_exit) |
7c6a1c65 PZ |
489 | { |
490 | struct perf_file_header f_header; | |
491 | struct perf_file_attr f_attr; | |
492 | struct perf_header_attr *attr; | |
d5eed904 | 493 | int i, err; |
7c6a1c65 PZ |
494 | |
495 | lseek(fd, sizeof(f_header), SEEK_SET); | |
496 | ||
497 | ||
498 | for (i = 0; i < self->attrs; i++) { | |
499 | attr = self->attr[i]; | |
500 | ||
501 | attr->id_offset = lseek(fd, 0, SEEK_CUR); | |
d5eed904 ACM |
502 | err = do_write(fd, attr->id, attr->ids * sizeof(u64)); |
503 | if (err < 0) { | |
504 | pr_debug("failed to write perf header\n"); | |
505 | return err; | |
506 | } | |
7c6a1c65 PZ |
507 | } |
508 | ||
509 | ||
510 | self->attr_offset = lseek(fd, 0, SEEK_CUR); | |
511 | ||
512 | for (i = 0; i < self->attrs; i++) { | |
513 | attr = self->attr[i]; | |
514 | ||
515 | f_attr = (struct perf_file_attr){ | |
516 | .attr = attr->attr, | |
517 | .ids = { | |
518 | .offset = attr->id_offset, | |
519 | .size = attr->ids * sizeof(u64), | |
520 | } | |
521 | }; | |
d5eed904 ACM |
522 | err = do_write(fd, &f_attr, sizeof(f_attr)); |
523 | if (err < 0) { | |
524 | pr_debug("failed to write perf header attribute\n"); | |
525 | return err; | |
526 | } | |
7c6a1c65 PZ |
527 | } |
528 | ||
8755a8f2 AV |
529 | self->event_offset = lseek(fd, 0, SEEK_CUR); |
530 | self->event_size = event_count * sizeof(struct perf_trace_event_type); | |
d5eed904 ACM |
531 | if (events) { |
532 | err = do_write(fd, events, self->event_size); | |
533 | if (err < 0) { | |
534 | pr_debug("failed to write perf header events\n"); | |
535 | return err; | |
536 | } | |
537 | } | |
8755a8f2 | 538 | |
7c6a1c65 PZ |
539 | self->data_offset = lseek(fd, 0, SEEK_CUR); |
540 | ||
d5eed904 ACM |
541 | if (at_exit) { |
542 | err = perf_header__adds_write(self, fd); | |
543 | if (err < 0) | |
544 | return err; | |
545 | } | |
9e827dd0 | 546 | |
7c6a1c65 PZ |
547 | f_header = (struct perf_file_header){ |
548 | .magic = PERF_MAGIC, | |
549 | .size = sizeof(f_header), | |
550 | .attr_size = sizeof(f_attr), | |
551 | .attrs = { | |
552 | .offset = self->attr_offset, | |
553 | .size = self->attrs * sizeof(f_attr), | |
554 | }, | |
555 | .data = { | |
556 | .offset = self->data_offset, | |
557 | .size = self->data_size, | |
558 | }, | |
8755a8f2 AV |
559 | .event_types = { |
560 | .offset = self->event_offset, | |
561 | .size = self->event_size, | |
562 | }, | |
7c6a1c65 PZ |
563 | }; |
564 | ||
db9f11e3 | 565 | memcpy(&f_header.adds_features, &self->adds_features, sizeof(self->adds_features)); |
2ba08250 | 566 | |
7c6a1c65 | 567 | lseek(fd, 0, SEEK_SET); |
d5eed904 ACM |
568 | err = do_write(fd, &f_header, sizeof(f_header)); |
569 | if (err < 0) { | |
570 | pr_debug("failed to write perf header\n"); | |
571 | return err; | |
572 | } | |
f887f301 | 573 | lseek(fd, self->data_offset + self->data_size, SEEK_SET); |
7c6a1c65 PZ |
574 | |
575 | self->frozen = 1; | |
d5eed904 | 576 | return 0; |
7c6a1c65 PZ |
577 | } |
578 | ||
ba21594c ACM |
579 | static int perf_header__getbuffer64(struct perf_header *self, |
580 | int fd, void *buf, size_t size) | |
581 | { | |
8dc58101 | 582 | if (do_read(fd, buf, size) <= 0) |
ba21594c ACM |
583 | return -1; |
584 | ||
585 | if (self->needs_swap) | |
586 | mem_bswap_64(buf, size); | |
587 | ||
588 | return 0; | |
589 | } | |
590 | ||
37562eac ACM |
591 | int perf_header__process_sections(struct perf_header *self, int fd, |
592 | int (*process)(struct perf_file_section *self, | |
ba21594c | 593 | struct perf_header *ph, |
37562eac | 594 | int feat, int fd)) |
2ba08250 | 595 | { |
9e827dd0 FW |
596 | struct perf_file_section *feat_sec; |
597 | int nr_sections; | |
598 | int sec_size; | |
599 | int idx = 0; | |
769885f3 | 600 | int err = -1, feat = 1; |
9e827dd0 FW |
601 | |
602 | nr_sections = bitmap_weight(self->adds_features, HEADER_FEAT_BITS); | |
603 | if (!nr_sections) | |
37562eac | 604 | return 0; |
9e827dd0 FW |
605 | |
606 | feat_sec = calloc(sizeof(*feat_sec), nr_sections); | |
607 | if (!feat_sec) | |
37562eac | 608 | return -1; |
9e827dd0 FW |
609 | |
610 | sec_size = sizeof(*feat_sec) * nr_sections; | |
611 | ||
f887f301 | 612 | lseek(fd, self->data_offset + self->data_size, SEEK_SET); |
9e827dd0 | 613 | |
ba21594c | 614 | if (perf_header__getbuffer64(self, fd, feat_sec, sec_size)) |
769885f3 | 615 | goto out_free; |
9e827dd0 | 616 | |
769885f3 | 617 | err = 0; |
37562eac ACM |
618 | while (idx < nr_sections && feat < HEADER_LAST_FEATURE) { |
619 | if (perf_header__has_feat(self, feat)) { | |
620 | struct perf_file_section *sec = &feat_sec[idx++]; | |
2ba08250 | 621 | |
ba21594c | 622 | err = process(sec, self, feat, fd); |
37562eac ACM |
623 | if (err < 0) |
624 | break; | |
625 | } | |
626 | ++feat; | |
2ba08250 | 627 | } |
769885f3 | 628 | out_free: |
37562eac ACM |
629 | free(feat_sec); |
630 | return err; | |
769885f3 | 631 | } |
4778d2e4 | 632 | |
37562eac ACM |
633 | int perf_file_header__read(struct perf_file_header *self, |
634 | struct perf_header *ph, int fd) | |
635 | { | |
636 | lseek(fd, 0, SEEK_SET); | |
37562eac | 637 | |
8dc58101 | 638 | if (do_read(fd, self, sizeof(*self)) <= 0 || |
ba21594c | 639 | memcmp(&self->magic, __perf_magic, sizeof(self->magic))) |
37562eac ACM |
640 | return -1; |
641 | ||
ba21594c ACM |
642 | if (self->attr_size != sizeof(struct perf_file_attr)) { |
643 | u64 attr_size = bswap_64(self->attr_size); | |
644 | ||
645 | if (attr_size != sizeof(struct perf_file_attr)) | |
646 | return -1; | |
647 | ||
648 | mem_bswap_64(self, offsetof(struct perf_file_header, | |
649 | adds_features)); | |
650 | ph->needs_swap = true; | |
651 | } | |
652 | ||
37562eac ACM |
653 | if (self->size != sizeof(*self)) { |
654 | /* Support the previous format */ | |
655 | if (self->size == offsetof(typeof(*self), adds_features)) | |
656 | bitmap_zero(self->adds_features, HEADER_FEAT_BITS); | |
657 | else | |
658 | return -1; | |
4778d2e4 | 659 | } |
9e827dd0 | 660 | |
37562eac | 661 | memcpy(&ph->adds_features, &self->adds_features, |
ba21594c ACM |
662 | sizeof(ph->adds_features)); |
663 | /* | |
664 | * FIXME: hack that assumes that if we need swap the perf.data file | |
665 | * may be coming from an arch with a different word-size, ergo different | |
666 | * DEFINE_BITMAP format, investigate more later, but for now its mostly | |
667 | * safe to assume that we have a build-id section. Trace files probably | |
668 | * have several other issues in this realm anyway... | |
669 | */ | |
670 | if (ph->needs_swap) { | |
671 | memset(&ph->adds_features, 0, sizeof(ph->adds_features)); | |
672 | perf_header__set_feat(ph, HEADER_BUILD_ID); | |
673 | } | |
37562eac ACM |
674 | |
675 | ph->event_offset = self->event_types.offset; | |
ba21594c ACM |
676 | ph->event_size = self->event_types.size; |
677 | ph->data_offset = self->data.offset; | |
37562eac ACM |
678 | ph->data_size = self->data.size; |
679 | return 0; | |
680 | } | |
681 | ||
a1645ce1 ZY |
682 | static int __event_process_build_id(struct build_id_event *bev, |
683 | char *filename, | |
684 | struct perf_session *session) | |
685 | { | |
686 | int err = -1; | |
687 | struct list_head *head; | |
688 | struct kernel_info *kerninfo; | |
689 | u16 misc; | |
690 | struct dso *dso; | |
691 | enum dso_kernel_type dso_type; | |
692 | ||
693 | kerninfo = kerninfo__findnew(&session->kerninfo_root, bev->pid); | |
694 | if (!kerninfo) | |
695 | goto out; | |
696 | ||
697 | misc = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
698 | ||
699 | switch (misc) { | |
700 | case PERF_RECORD_MISC_KERNEL: | |
701 | dso_type = DSO_TYPE_KERNEL; | |
702 | head = &kerninfo->dsos__kernel; | |
703 | break; | |
704 | case PERF_RECORD_MISC_GUEST_KERNEL: | |
705 | dso_type = DSO_TYPE_GUEST_KERNEL; | |
706 | head = &kerninfo->dsos__kernel; | |
707 | break; | |
708 | case PERF_RECORD_MISC_USER: | |
709 | case PERF_RECORD_MISC_GUEST_USER: | |
710 | dso_type = DSO_TYPE_USER; | |
711 | head = &kerninfo->dsos__user; | |
712 | break; | |
713 | default: | |
714 | goto out; | |
715 | } | |
716 | ||
717 | dso = __dsos__findnew(head, filename); | |
718 | if (dso != NULL) { | |
719 | dso__set_build_id(dso, &bev->build_id); | |
720 | if (filename[0] == '[') | |
721 | dso->kernel = dso_type; | |
722 | } | |
723 | ||
724 | err = 0; | |
725 | out: | |
726 | return err; | |
727 | } | |
728 | ||
729 | static int perf_header__read_build_ids(struct perf_header *self, | |
730 | int input, u64 offset, u64 size) | |
731 | { | |
732 | struct perf_session *session = container_of(self, | |
733 | struct perf_session, header); | |
734 | struct build_id_event bev; | |
735 | char filename[PATH_MAX]; | |
736 | u64 limit = offset + size; | |
737 | int err = -1; | |
738 | ||
739 | while (offset < limit) { | |
740 | ssize_t len; | |
741 | ||
742 | if (read(input, &bev, sizeof(bev)) != sizeof(bev)) | |
743 | goto out; | |
744 | ||
745 | if (self->needs_swap) | |
746 | perf_event_header__bswap(&bev.header); | |
747 | ||
748 | len = bev.header.size - sizeof(bev); | |
749 | if (read(input, filename, len) != len) | |
750 | goto out; | |
751 | ||
752 | __event_process_build_id(&bev, filename, session); | |
753 | ||
754 | offset += bev.header.size; | |
755 | } | |
756 | err = 0; | |
757 | out: | |
758 | return err; | |
759 | } | |
760 | ||
37562eac | 761 | static int perf_file_section__process(struct perf_file_section *self, |
ba21594c | 762 | struct perf_header *ph, |
37562eac ACM |
763 | int feat, int fd) |
764 | { | |
f887f301 | 765 | if (lseek(fd, self->offset, SEEK_SET) == (off_t)-1) { |
37562eac ACM |
766 | pr_debug("Failed to lseek to %Ld offset for feature %d, " |
767 | "continuing...\n", self->offset, feat); | |
768 | return 0; | |
769 | } | |
770 | ||
771 | switch (feat) { | |
772 | case HEADER_TRACE_INFO: | |
773 | trace_report(fd); | |
774 | break; | |
775 | ||
776 | case HEADER_BUILD_ID: | |
ba21594c | 777 | if (perf_header__read_build_ids(ph, fd, self->offset, self->size)) |
37562eac ACM |
778 | pr_debug("Failed to read buildids, continuing...\n"); |
779 | break; | |
780 | default: | |
781 | pr_debug("unknown feature %d, continuing...\n", feat); | |
782 | } | |
783 | ||
784 | return 0; | |
785 | } | |
2ba08250 | 786 | |
8dc58101 TZ |
787 | static int perf_file_header__read_pipe(struct perf_pipe_file_header *self, |
788 | struct perf_header *ph, int fd) | |
7c6a1c65 | 789 | { |
8dc58101 TZ |
790 | if (do_read(fd, self, sizeof(*self)) <= 0 || |
791 | memcmp(&self->magic, __perf_magic, sizeof(self->magic))) | |
792 | return -1; | |
793 | ||
794 | if (self->size != sizeof(*self)) { | |
795 | u64 size = bswap_64(self->size); | |
796 | ||
797 | if (size != sizeof(*self)) | |
798 | return -1; | |
799 | ||
800 | ph->needs_swap = true; | |
801 | } | |
802 | ||
803 | return 0; | |
804 | } | |
805 | ||
806 | static int perf_header__read_pipe(struct perf_session *session, int fd) | |
807 | { | |
808 | struct perf_header *self = &session->header; | |
809 | struct perf_pipe_file_header f_header; | |
810 | ||
811 | if (perf_file_header__read_pipe(&f_header, self, fd) < 0) { | |
812 | pr_debug("incompatible file format\n"); | |
813 | return -EINVAL; | |
814 | } | |
815 | ||
816 | session->fd = fd; | |
817 | ||
818 | return 0; | |
819 | } | |
820 | ||
821 | int perf_header__read(struct perf_session *session, int fd) | |
822 | { | |
823 | struct perf_header *self = &session->header; | |
ba21594c | 824 | struct perf_file_header f_header; |
7c6a1c65 PZ |
825 | struct perf_file_attr f_attr; |
826 | u64 f_id; | |
7c6a1c65 PZ |
827 | int nr_attrs, nr_ids, i, j; |
828 | ||
8dc58101 TZ |
829 | if (session->fd_pipe) |
830 | return perf_header__read_pipe(session, fd); | |
831 | ||
4dc0a04b ACM |
832 | if (perf_file_header__read(&f_header, self, fd) < 0) { |
833 | pr_debug("incompatible file format\n"); | |
834 | return -EINVAL; | |
835 | } | |
7c6a1c65 PZ |
836 | |
837 | nr_attrs = f_header.attrs.size / sizeof(f_attr); | |
838 | lseek(fd, f_header.attrs.offset, SEEK_SET); | |
839 | ||
840 | for (i = 0; i < nr_attrs; i++) { | |
841 | struct perf_header_attr *attr; | |
1c222bce | 842 | off_t tmp; |
7c6a1c65 | 843 | |
ba21594c | 844 | if (perf_header__getbuffer64(self, fd, &f_attr, sizeof(f_attr))) |
769885f3 | 845 | goto out_errno; |
ba21594c | 846 | |
1c222bce | 847 | tmp = lseek(fd, 0, SEEK_CUR); |
7c6a1c65 PZ |
848 | |
849 | attr = perf_header_attr__new(&f_attr.attr); | |
dc79c0fc | 850 | if (attr == NULL) |
4dc0a04b | 851 | return -ENOMEM; |
7c6a1c65 PZ |
852 | |
853 | nr_ids = f_attr.ids.size / sizeof(u64); | |
854 | lseek(fd, f_attr.ids.offset, SEEK_SET); | |
855 | ||
856 | for (j = 0; j < nr_ids; j++) { | |
ba21594c | 857 | if (perf_header__getbuffer64(self, fd, &f_id, sizeof(f_id))) |
769885f3 | 858 | goto out_errno; |
7c6a1c65 | 859 | |
4dc0a04b ACM |
860 | if (perf_header_attr__add_id(attr, f_id) < 0) { |
861 | perf_header_attr__delete(attr); | |
862 | return -ENOMEM; | |
863 | } | |
864 | } | |
865 | if (perf_header__add_attr(self, attr) < 0) { | |
866 | perf_header_attr__delete(attr); | |
867 | return -ENOMEM; | |
7c6a1c65 | 868 | } |
11deb1f9 | 869 | |
7c6a1c65 PZ |
870 | lseek(fd, tmp, SEEK_SET); |
871 | } | |
872 | ||
8755a8f2 AV |
873 | if (f_header.event_types.size) { |
874 | lseek(fd, f_header.event_types.offset, SEEK_SET); | |
875 | events = malloc(f_header.event_types.size); | |
4dc0a04b ACM |
876 | if (events == NULL) |
877 | return -ENOMEM; | |
ba21594c ACM |
878 | if (perf_header__getbuffer64(self, fd, events, |
879 | f_header.event_types.size)) | |
769885f3 | 880 | goto out_errno; |
8755a8f2 AV |
881 | event_count = f_header.event_types.size / sizeof(struct perf_trace_event_type); |
882 | } | |
03456a15 | 883 | |
37562eac | 884 | perf_header__process_sections(self, fd, perf_file_section__process); |
4778d2e4 | 885 | |
2e01d179 | 886 | lseek(fd, self->data_offset, SEEK_SET); |
7c6a1c65 PZ |
887 | |
888 | self->frozen = 1; | |
4dc0a04b | 889 | return 0; |
769885f3 ACM |
890 | out_errno: |
891 | return -errno; | |
7c6a1c65 | 892 | } |
0d3a5c88 FW |
893 | |
894 | u64 perf_header__sample_type(struct perf_header *header) | |
895 | { | |
896 | u64 type = 0; | |
897 | int i; | |
898 | ||
899 | for (i = 0; i < header->attrs; i++) { | |
900 | struct perf_header_attr *attr = header->attr[i]; | |
901 | ||
902 | if (!type) | |
903 | type = attr->attr.sample_type; | |
904 | else if (type != attr->attr.sample_type) | |
905 | die("non matching sample_type"); | |
906 | } | |
907 | ||
908 | return type; | |
909 | } | |
910 | ||
cdd6c482 | 911 | struct perf_event_attr * |
0d3a5c88 FW |
912 | perf_header__find_attr(u64 id, struct perf_header *header) |
913 | { | |
914 | int i; | |
915 | ||
916 | for (i = 0; i < header->attrs; i++) { | |
917 | struct perf_header_attr *attr = header->attr[i]; | |
918 | int j; | |
919 | ||
920 | for (j = 0; j < attr->ids; j++) { | |
921 | if (attr->id[j] == id) | |
922 | return &attr->attr; | |
923 | } | |
924 | } | |
925 | ||
926 | return NULL; | |
927 | } | |
2c46dbb5 TZ |
928 | |
929 | int event__synthesize_attr(struct perf_event_attr *attr, u16 ids, u64 *id, | |
930 | event__handler_t process, | |
931 | struct perf_session *session) | |
932 | { | |
933 | event_t *ev; | |
934 | size_t size; | |
935 | int err; | |
936 | ||
937 | size = sizeof(struct perf_event_attr); | |
938 | size = ALIGN(size, sizeof(u64)); | |
939 | size += sizeof(struct perf_event_header); | |
940 | size += ids * sizeof(u64); | |
941 | ||
942 | ev = malloc(size); | |
943 | ||
944 | ev->attr.attr = *attr; | |
945 | memcpy(ev->attr.id, id, ids * sizeof(u64)); | |
946 | ||
947 | ev->attr.header.type = PERF_RECORD_HEADER_ATTR; | |
948 | ev->attr.header.size = size; | |
949 | ||
950 | err = process(ev, session); | |
951 | ||
952 | free(ev); | |
953 | ||
954 | return err; | |
955 | } | |
956 | ||
957 | int event__synthesize_attrs(struct perf_header *self, | |
958 | event__handler_t process, | |
959 | struct perf_session *session) | |
960 | { | |
961 | struct perf_header_attr *attr; | |
962 | int i, err = 0; | |
963 | ||
964 | for (i = 0; i < self->attrs; i++) { | |
965 | attr = self->attr[i]; | |
966 | ||
967 | err = event__synthesize_attr(&attr->attr, attr->ids, attr->id, | |
968 | process, session); | |
969 | if (err) { | |
970 | pr_debug("failed to create perf header attribute\n"); | |
971 | return err; | |
972 | } | |
973 | } | |
974 | ||
975 | return err; | |
976 | } | |
977 | ||
978 | int event__process_attr(event_t *self, struct perf_session *session) | |
979 | { | |
980 | struct perf_header_attr *attr; | |
981 | unsigned int i, ids, n_ids; | |
982 | ||
983 | attr = perf_header_attr__new(&self->attr.attr); | |
984 | if (attr == NULL) | |
985 | return -ENOMEM; | |
986 | ||
987 | ids = self->header.size; | |
988 | ids -= (void *)&self->attr.id - (void *)self; | |
989 | n_ids = ids / sizeof(u64); | |
990 | ||
991 | for (i = 0; i < n_ids; i++) { | |
992 | if (perf_header_attr__add_id(attr, self->attr.id[i]) < 0) { | |
993 | perf_header_attr__delete(attr); | |
994 | return -ENOMEM; | |
995 | } | |
996 | } | |
997 | ||
998 | if (perf_header__add_attr(&session->header, attr) < 0) { | |
999 | perf_header_attr__delete(attr); | |
1000 | return -ENOMEM; | |
1001 | } | |
1002 | ||
1003 | perf_session__update_sample_type(session); | |
1004 | ||
1005 | return 0; | |
1006 | } | |
cd19a035 TZ |
1007 | |
1008 | int event__synthesize_event_type(u64 event_id, char *name, | |
1009 | event__handler_t process, | |
1010 | struct perf_session *session) | |
1011 | { | |
1012 | event_t ev; | |
1013 | size_t size = 0; | |
1014 | int err = 0; | |
1015 | ||
1016 | memset(&ev, 0, sizeof(ev)); | |
1017 | ||
1018 | ev.event_type.event_type.event_id = event_id; | |
1019 | memset(ev.event_type.event_type.name, 0, MAX_EVENT_NAME); | |
1020 | strncpy(ev.event_type.event_type.name, name, MAX_EVENT_NAME - 1); | |
1021 | ||
1022 | ev.event_type.header.type = PERF_RECORD_HEADER_EVENT_TYPE; | |
1023 | size = strlen(name); | |
1024 | size = ALIGN(size, sizeof(u64)); | |
1025 | ev.event_type.header.size = sizeof(ev.event_type) - | |
1026 | (sizeof(ev.event_type.event_type.name) - size); | |
1027 | ||
1028 | err = process(&ev, session); | |
1029 | ||
1030 | return err; | |
1031 | } | |
1032 | ||
1033 | int event__synthesize_event_types(event__handler_t process, | |
1034 | struct perf_session *session) | |
1035 | { | |
1036 | struct perf_trace_event_type *type; | |
1037 | int i, err = 0; | |
1038 | ||
1039 | for (i = 0; i < event_count; i++) { | |
1040 | type = &events[i]; | |
1041 | ||
1042 | err = event__synthesize_event_type(type->event_id, type->name, | |
1043 | process, session); | |
1044 | if (err) { | |
1045 | pr_debug("failed to create perf header event type\n"); | |
1046 | return err; | |
1047 | } | |
1048 | } | |
1049 | ||
1050 | return err; | |
1051 | } | |
1052 | ||
1053 | int event__process_event_type(event_t *self, | |
1054 | struct perf_session *session __unused) | |
1055 | { | |
1056 | if (perf_header__push_event(self->event_type.event_type.event_id, | |
1057 | self->event_type.event_type.name) < 0) | |
1058 | return -ENOMEM; | |
1059 | ||
1060 | return 0; | |
1061 | } | |
9215545e TZ |
1062 | |
1063 | int event__synthesize_tracing_data(int fd, struct perf_event_attr *pattrs, | |
1064 | int nb_events, | |
1065 | event__handler_t process, | |
1066 | struct perf_session *session __unused) | |
1067 | { | |
1068 | event_t ev; | |
1069 | ssize_t size = 0, aligned_size = 0, padding; | |
1070 | int err = 0; | |
1071 | ||
1072 | memset(&ev, 0, sizeof(ev)); | |
1073 | ||
1074 | ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA; | |
1075 | size = read_tracing_data_size(fd, pattrs, nb_events); | |
1076 | if (size <= 0) | |
1077 | return size; | |
1078 | aligned_size = ALIGN(size, sizeof(u64)); | |
1079 | padding = aligned_size - size; | |
1080 | ev.tracing_data.header.size = sizeof(ev.tracing_data); | |
1081 | ev.tracing_data.size = aligned_size; | |
1082 | ||
1083 | process(&ev, session); | |
1084 | ||
1085 | err = read_tracing_data(fd, pattrs, nb_events); | |
1086 | write_padded(fd, NULL, 0, padding); | |
1087 | ||
1088 | return aligned_size; | |
1089 | } | |
1090 | ||
1091 | int event__process_tracing_data(event_t *self, | |
1092 | struct perf_session *session) | |
1093 | { | |
1094 | ssize_t size_read, padding, size = self->tracing_data.size; | |
1095 | off_t offset = lseek(session->fd, 0, SEEK_CUR); | |
1096 | char buf[BUFSIZ]; | |
1097 | ||
1098 | /* setup for reading amidst mmap */ | |
1099 | lseek(session->fd, offset + sizeof(struct tracing_data_event), | |
1100 | SEEK_SET); | |
1101 | ||
1102 | size_read = trace_report(session->fd); | |
1103 | ||
1104 | padding = ALIGN(size_read, sizeof(u64)) - size_read; | |
1105 | ||
1106 | if (read(session->fd, buf, padding) < 0) | |
1107 | die("reading input file"); | |
1108 | ||
1109 | if (size_read + padding != size) | |
1110 | die("tracing data size mismatch"); | |
1111 | ||
1112 | return size_read + padding; | |
1113 | } | |
c7929e47 TZ |
1114 | |
1115 | int event__synthesize_build_id(struct dso *pos, u16 misc, | |
1116 | event__handler_t process, | |
a1645ce1 | 1117 | struct kernel_info *kerninfo, |
c7929e47 TZ |
1118 | struct perf_session *session) |
1119 | { | |
1120 | event_t ev; | |
1121 | size_t len; | |
1122 | int err = 0; | |
1123 | ||
1124 | if (!pos->hit) | |
1125 | return err; | |
1126 | ||
1127 | memset(&ev, 0, sizeof(ev)); | |
1128 | ||
1129 | len = pos->long_name_len + 1; | |
1130 | len = ALIGN(len, NAME_ALIGN); | |
1131 | memcpy(&ev.build_id.build_id, pos->build_id, sizeof(pos->build_id)); | |
1132 | ev.build_id.header.type = PERF_RECORD_HEADER_BUILD_ID; | |
1133 | ev.build_id.header.misc = misc; | |
a1645ce1 | 1134 | ev.build_id.pid = kerninfo->pid; |
c7929e47 TZ |
1135 | ev.build_id.header.size = sizeof(ev.build_id) + len; |
1136 | memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len); | |
1137 | ||
1138 | err = process(&ev, session); | |
1139 | ||
1140 | return err; | |
1141 | } | |
1142 | ||
1143 | static int __event_synthesize_build_ids(struct list_head *head, u16 misc, | |
1144 | event__handler_t process, | |
a1645ce1 | 1145 | struct kernel_info *kerninfo, |
c7929e47 TZ |
1146 | struct perf_session *session) |
1147 | { | |
1148 | struct dso *pos; | |
1149 | ||
1150 | dsos__for_each_with_build_id(pos, head) { | |
1151 | int err; | |
1152 | if (!pos->hit) | |
1153 | continue; | |
1154 | ||
a1645ce1 ZY |
1155 | err = event__synthesize_build_id(pos, misc, process, |
1156 | kerninfo, session); | |
c7929e47 TZ |
1157 | if (err < 0) |
1158 | return err; | |
1159 | } | |
1160 | ||
1161 | return 0; | |
1162 | } | |
1163 | ||
1164 | int event__synthesize_build_ids(event__handler_t process, | |
1165 | struct perf_session *session) | |
1166 | { | |
a1645ce1 ZY |
1167 | int err = 0; |
1168 | u16 kmisc, umisc; | |
1169 | struct kernel_info *pos; | |
1170 | struct rb_node *nd; | |
c7929e47 | 1171 | |
a1645ce1 | 1172 | if (!dsos__read_build_ids(&session->header, true)) |
c7929e47 TZ |
1173 | return 0; |
1174 | ||
a1645ce1 ZY |
1175 | for (nd = rb_first(&session->kerninfo_root); nd; nd = rb_next(nd)) { |
1176 | pos = rb_entry(nd, struct kernel_info, rb_node); | |
1177 | if (is_host_kernel(pos)) { | |
1178 | kmisc = PERF_RECORD_MISC_KERNEL; | |
1179 | umisc = PERF_RECORD_MISC_USER; | |
1180 | } else { | |
1181 | kmisc = PERF_RECORD_MISC_GUEST_KERNEL; | |
1182 | umisc = PERF_RECORD_MISC_GUEST_USER; | |
1183 | } | |
1184 | ||
1185 | err = __event_synthesize_build_ids(&pos->dsos__kernel, | |
1186 | kmisc, process, pos, session); | |
1187 | if (err == 0) | |
1188 | err = __event_synthesize_build_ids(&pos->dsos__user, | |
1189 | umisc, process, pos, session); | |
1190 | if (err) | |
1191 | break; | |
1192 | } | |
c7929e47 TZ |
1193 | |
1194 | if (err < 0) { | |
1195 | pr_debug("failed to synthesize build ids\n"); | |
1196 | return err; | |
1197 | } | |
1198 | ||
a1645ce1 | 1199 | dsos__cache_build_ids(&session->header); |
c7929e47 TZ |
1200 | |
1201 | return 0; | |
1202 | } | |
1203 | ||
1204 | int event__process_build_id(event_t *self, | |
a1645ce1 | 1205 | struct perf_session *session) |
c7929e47 | 1206 | { |
a1645ce1 ZY |
1207 | __event_process_build_id(&self->build_id, |
1208 | self->build_id.filename, | |
1209 | session); | |
c7929e47 TZ |
1210 | return 0; |
1211 | } |