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 | ||
23346f21 ACM |
232 | for (nd = rb_first(&session->machines); nd; nd = rb_next(nd)) { |
233 | struct machine *pos = rb_entry(nd, struct machine, rb_node); | |
234 | if (machine__is_host(pos)) { | |
a1645ce1 ZY |
235 | kmisc = PERF_RECORD_MISC_KERNEL; |
236 | umisc = PERF_RECORD_MISC_USER; | |
237 | } else { | |
238 | kmisc = PERF_RECORD_MISC_GUEST_KERNEL; | |
239 | umisc = PERF_RECORD_MISC_GUEST_USER; | |
240 | } | |
241 | ||
23346f21 ACM |
242 | err = __dsos__write_buildid_table(&pos->kernel_dsos, pos->pid, |
243 | kmisc, fd); | |
a1645ce1 | 244 | if (err == 0) |
23346f21 ACM |
245 | err = __dsos__write_buildid_table(&pos->user_dsos, |
246 | pos->pid, umisc, fd); | |
a1645ce1 ZY |
247 | if (err) |
248 | break; | |
249 | } | |
b0da954a ACM |
250 | return err; |
251 | } | |
252 | ||
ef12a141 ACM |
253 | int build_id_cache__add_s(const char *sbuild_id, const char *debugdir, |
254 | const char *name, bool is_kallsyms) | |
4cf40131 ACM |
255 | { |
256 | const size_t size = PATH_MAX; | |
257 | char *filename = malloc(size), | |
ef12a141 | 258 | *linkname = malloc(size), *targetname; |
4cf40131 ACM |
259 | int len, err = -1; |
260 | ||
261 | if (filename == NULL || linkname == NULL) | |
262 | goto out_free; | |
263 | ||
9e201442 | 264 | len = snprintf(filename, size, "%s%s%s", |
ef12a141 | 265 | debugdir, is_kallsyms ? "/" : "", name); |
4cf40131 ACM |
266 | if (mkdir_p(filename, 0755)) |
267 | goto out_free; | |
268 | ||
ef12a141 | 269 | snprintf(filename + len, sizeof(filename) - len, "/%s", sbuild_id); |
4cf40131 | 270 | |
9e201442 ACM |
271 | if (access(filename, F_OK)) { |
272 | if (is_kallsyms) { | |
273 | if (copyfile("/proc/kallsyms", filename)) | |
274 | goto out_free; | |
ef12a141 | 275 | } else if (link(name, filename) && copyfile(name, filename)) |
9e201442 ACM |
276 | goto out_free; |
277 | } | |
4cf40131 ACM |
278 | |
279 | len = snprintf(linkname, size, "%s/.build-id/%.2s", | |
280 | debugdir, sbuild_id); | |
281 | ||
282 | if (access(linkname, X_OK) && mkdir_p(linkname, 0755)) | |
283 | goto out_free; | |
284 | ||
285 | snprintf(linkname + len, size - len, "/%s", sbuild_id + 2); | |
286 | targetname = filename + strlen(debugdir) - 5; | |
287 | memcpy(targetname, "../..", 5); | |
288 | ||
289 | if (symlink(targetname, linkname) == 0) | |
290 | err = 0; | |
291 | out_free: | |
292 | free(filename); | |
293 | free(linkname); | |
294 | return err; | |
295 | } | |
296 | ||
ef12a141 ACM |
297 | static int build_id_cache__add_b(const u8 *build_id, size_t build_id_size, |
298 | const char *name, const char *debugdir, | |
299 | bool is_kallsyms) | |
300 | { | |
301 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; | |
302 | ||
303 | build_id__sprintf(build_id, build_id_size, sbuild_id); | |
304 | ||
305 | return build_id_cache__add_s(sbuild_id, debugdir, name, is_kallsyms); | |
306 | } | |
307 | ||
308 | int build_id_cache__remove_s(const char *sbuild_id, const char *debugdir) | |
309 | { | |
310 | const size_t size = PATH_MAX; | |
311 | char *filename = malloc(size), | |
312 | *linkname = malloc(size); | |
313 | int err = -1; | |
314 | ||
315 | if (filename == NULL || linkname == NULL) | |
316 | goto out_free; | |
317 | ||
318 | snprintf(linkname, size, "%s/.build-id/%.2s/%s", | |
319 | debugdir, sbuild_id, sbuild_id + 2); | |
320 | ||
321 | if (access(linkname, F_OK)) | |
322 | goto out_free; | |
323 | ||
324 | if (readlink(linkname, filename, size) < 0) | |
325 | goto out_free; | |
326 | ||
327 | if (unlink(linkname)) | |
328 | goto out_free; | |
329 | ||
330 | /* | |
331 | * Since the link is relative, we must make it absolute: | |
332 | */ | |
333 | snprintf(linkname, size, "%s/.build-id/%.2s/%s", | |
334 | debugdir, sbuild_id, filename); | |
335 | ||
336 | if (unlink(linkname)) | |
337 | goto out_free; | |
338 | ||
339 | err = 0; | |
340 | out_free: | |
341 | free(filename); | |
342 | free(linkname); | |
343 | return err; | |
344 | } | |
345 | ||
346 | static int dso__cache_build_id(struct dso *self, const char *debugdir) | |
347 | { | |
348 | bool is_kallsyms = self->kernel && self->long_name[0] != '/'; | |
349 | ||
350 | return build_id_cache__add_b(self->build_id, sizeof(self->build_id), | |
351 | self->long_name, debugdir, is_kallsyms); | |
352 | } | |
353 | ||
4cf40131 ACM |
354 | static int __dsos__cache_build_ids(struct list_head *head, const char *debugdir) |
355 | { | |
356 | struct dso *pos; | |
357 | int err = 0; | |
358 | ||
359 | dsos__for_each_with_build_id(pos, head) | |
360 | if (dso__cache_build_id(pos, debugdir)) | |
361 | err = -1; | |
362 | ||
363 | return err; | |
364 | } | |
365 | ||
a1645ce1 | 366 | static int dsos__cache_build_ids(struct perf_header *self) |
4cf40131 | 367 | { |
a1645ce1 ZY |
368 | struct perf_session *session = container_of(self, |
369 | struct perf_session, header); | |
370 | struct rb_node *nd; | |
371 | int ret = 0; | |
4cf40131 ACM |
372 | char debugdir[PATH_MAX]; |
373 | ||
374 | snprintf(debugdir, sizeof(debugdir), "%s/%s", getenv("HOME"), | |
375 | DEBUG_CACHE_DIR); | |
376 | ||
377 | if (mkdir(debugdir, 0755) != 0 && errno != EEXIST) | |
378 | return -1; | |
379 | ||
23346f21 ACM |
380 | for (nd = rb_first(&session->machines); nd; nd = rb_next(nd)) { |
381 | struct machine *pos = rb_entry(nd, struct machine, rb_node); | |
382 | ret |= __dsos__cache_build_ids(&pos->kernel_dsos, debugdir); | |
383 | ret |= __dsos__cache_build_ids(&pos->user_dsos, debugdir); | |
a1645ce1 ZY |
384 | } |
385 | return ret ? -1 : 0; | |
386 | } | |
387 | ||
388 | static bool dsos__read_build_ids(struct perf_header *self, bool with_hits) | |
389 | { | |
390 | bool ret = false; | |
391 | struct perf_session *session = container_of(self, | |
392 | struct perf_session, header); | |
393 | struct rb_node *nd; | |
394 | ||
23346f21 ACM |
395 | for (nd = rb_first(&session->machines); nd; nd = rb_next(nd)) { |
396 | struct machine *pos = rb_entry(nd, struct machine, rb_node); | |
397 | ret |= __dsos__read_build_ids(&pos->kernel_dsos, with_hits); | |
398 | ret |= __dsos__read_build_ids(&pos->user_dsos, with_hits); | |
a1645ce1 ZY |
399 | } |
400 | ||
401 | return ret; | |
4cf40131 ACM |
402 | } |
403 | ||
d5eed904 | 404 | static int perf_header__adds_write(struct perf_header *self, int fd) |
2ba08250 | 405 | { |
9e827dd0 FW |
406 | int nr_sections; |
407 | struct perf_file_section *feat_sec; | |
408 | int sec_size; | |
409 | u64 sec_start; | |
d5eed904 | 410 | int idx = 0, err; |
9e827dd0 | 411 | |
a1645ce1 | 412 | if (dsos__read_build_ids(self, true)) |
9e827dd0 FW |
413 | perf_header__set_feat(self, HEADER_BUILD_ID); |
414 | ||
415 | nr_sections = bitmap_weight(self->adds_features, HEADER_FEAT_BITS); | |
416 | if (!nr_sections) | |
d5eed904 | 417 | return 0; |
9e827dd0 FW |
418 | |
419 | feat_sec = calloc(sizeof(*feat_sec), nr_sections); | |
d5eed904 ACM |
420 | if (feat_sec == NULL) |
421 | return -ENOMEM; | |
9e827dd0 FW |
422 | |
423 | sec_size = sizeof(*feat_sec) * nr_sections; | |
424 | ||
425 | sec_start = self->data_offset + self->data_size; | |
f887f301 | 426 | lseek(fd, sec_start + sec_size, SEEK_SET); |
2ba08250 | 427 | |
3e13ab2d | 428 | if (perf_header__has_feat(self, HEADER_TRACE_INFO)) { |
9e827dd0 FW |
429 | struct perf_file_section *trace_sec; |
430 | ||
431 | trace_sec = &feat_sec[idx++]; | |
432 | ||
2ba08250 | 433 | /* Write trace info */ |
f887f301 | 434 | trace_sec->offset = lseek(fd, 0, SEEK_CUR); |
2ba08250 | 435 | read_tracing_data(fd, attrs, nr_counters); |
f887f301 | 436 | trace_sec->size = lseek(fd, 0, SEEK_CUR) - trace_sec->offset; |
2ba08250 | 437 | } |
8671dab9 | 438 | |
9e827dd0 FW |
439 | if (perf_header__has_feat(self, HEADER_BUILD_ID)) { |
440 | struct perf_file_section *buildid_sec; | |
441 | ||
442 | buildid_sec = &feat_sec[idx++]; | |
443 | ||
444 | /* Write build-ids */ | |
f887f301 | 445 | buildid_sec->offset = lseek(fd, 0, SEEK_CUR); |
a1645ce1 | 446 | err = dsos__write_buildid_table(self, fd); |
d5eed904 ACM |
447 | if (err < 0) { |
448 | pr_debug("failed to write buildid table\n"); | |
449 | goto out_free; | |
450 | } | |
f887f301 XG |
451 | buildid_sec->size = lseek(fd, 0, SEEK_CUR) - |
452 | buildid_sec->offset; | |
a1645ce1 | 453 | dsos__cache_build_ids(self); |
8671dab9 | 454 | } |
9e827dd0 | 455 | |
f887f301 | 456 | lseek(fd, sec_start, SEEK_SET); |
d5eed904 ACM |
457 | err = do_write(fd, feat_sec, sec_size); |
458 | if (err < 0) | |
459 | pr_debug("failed to write feature section\n"); | |
460 | out_free: | |
9e827dd0 | 461 | free(feat_sec); |
d5eed904 | 462 | return err; |
9e827dd0 | 463 | } |
2ba08250 | 464 | |
8dc58101 TZ |
465 | int perf_header__write_pipe(int fd) |
466 | { | |
467 | struct perf_pipe_file_header f_header; | |
468 | int err; | |
469 | ||
470 | f_header = (struct perf_pipe_file_header){ | |
471 | .magic = PERF_MAGIC, | |
472 | .size = sizeof(f_header), | |
473 | }; | |
474 | ||
475 | err = do_write(fd, &f_header, sizeof(f_header)); | |
476 | if (err < 0) { | |
477 | pr_debug("failed to write perf pipe header\n"); | |
478 | return err; | |
479 | } | |
480 | ||
481 | return 0; | |
482 | } | |
483 | ||
d5eed904 | 484 | int perf_header__write(struct perf_header *self, int fd, bool at_exit) |
7c6a1c65 PZ |
485 | { |
486 | struct perf_file_header f_header; | |
487 | struct perf_file_attr f_attr; | |
488 | struct perf_header_attr *attr; | |
d5eed904 | 489 | int i, err; |
7c6a1c65 PZ |
490 | |
491 | lseek(fd, sizeof(f_header), SEEK_SET); | |
492 | ||
493 | ||
494 | for (i = 0; i < self->attrs; i++) { | |
495 | attr = self->attr[i]; | |
496 | ||
497 | attr->id_offset = lseek(fd, 0, SEEK_CUR); | |
d5eed904 ACM |
498 | err = do_write(fd, attr->id, attr->ids * sizeof(u64)); |
499 | if (err < 0) { | |
500 | pr_debug("failed to write perf header\n"); | |
501 | return err; | |
502 | } | |
7c6a1c65 PZ |
503 | } |
504 | ||
505 | ||
506 | self->attr_offset = lseek(fd, 0, SEEK_CUR); | |
507 | ||
508 | for (i = 0; i < self->attrs; i++) { | |
509 | attr = self->attr[i]; | |
510 | ||
511 | f_attr = (struct perf_file_attr){ | |
512 | .attr = attr->attr, | |
513 | .ids = { | |
514 | .offset = attr->id_offset, | |
515 | .size = attr->ids * sizeof(u64), | |
516 | } | |
517 | }; | |
d5eed904 ACM |
518 | err = do_write(fd, &f_attr, sizeof(f_attr)); |
519 | if (err < 0) { | |
520 | pr_debug("failed to write perf header attribute\n"); | |
521 | return err; | |
522 | } | |
7c6a1c65 PZ |
523 | } |
524 | ||
8755a8f2 AV |
525 | self->event_offset = lseek(fd, 0, SEEK_CUR); |
526 | self->event_size = event_count * sizeof(struct perf_trace_event_type); | |
d5eed904 ACM |
527 | if (events) { |
528 | err = do_write(fd, events, self->event_size); | |
529 | if (err < 0) { | |
530 | pr_debug("failed to write perf header events\n"); | |
531 | return err; | |
532 | } | |
533 | } | |
8755a8f2 | 534 | |
7c6a1c65 PZ |
535 | self->data_offset = lseek(fd, 0, SEEK_CUR); |
536 | ||
d5eed904 ACM |
537 | if (at_exit) { |
538 | err = perf_header__adds_write(self, fd); | |
539 | if (err < 0) | |
540 | return err; | |
541 | } | |
9e827dd0 | 542 | |
7c6a1c65 PZ |
543 | f_header = (struct perf_file_header){ |
544 | .magic = PERF_MAGIC, | |
545 | .size = sizeof(f_header), | |
546 | .attr_size = sizeof(f_attr), | |
547 | .attrs = { | |
548 | .offset = self->attr_offset, | |
549 | .size = self->attrs * sizeof(f_attr), | |
550 | }, | |
551 | .data = { | |
552 | .offset = self->data_offset, | |
553 | .size = self->data_size, | |
554 | }, | |
8755a8f2 AV |
555 | .event_types = { |
556 | .offset = self->event_offset, | |
557 | .size = self->event_size, | |
558 | }, | |
7c6a1c65 PZ |
559 | }; |
560 | ||
db9f11e3 | 561 | memcpy(&f_header.adds_features, &self->adds_features, sizeof(self->adds_features)); |
2ba08250 | 562 | |
7c6a1c65 | 563 | lseek(fd, 0, SEEK_SET); |
d5eed904 ACM |
564 | err = do_write(fd, &f_header, sizeof(f_header)); |
565 | if (err < 0) { | |
566 | pr_debug("failed to write perf header\n"); | |
567 | return err; | |
568 | } | |
f887f301 | 569 | lseek(fd, self->data_offset + self->data_size, SEEK_SET); |
7c6a1c65 PZ |
570 | |
571 | self->frozen = 1; | |
d5eed904 | 572 | return 0; |
7c6a1c65 PZ |
573 | } |
574 | ||
ba21594c ACM |
575 | static int perf_header__getbuffer64(struct perf_header *self, |
576 | int fd, void *buf, size_t size) | |
577 | { | |
8dc58101 | 578 | if (do_read(fd, buf, size) <= 0) |
ba21594c ACM |
579 | return -1; |
580 | ||
581 | if (self->needs_swap) | |
582 | mem_bswap_64(buf, size); | |
583 | ||
584 | return 0; | |
585 | } | |
586 | ||
37562eac ACM |
587 | int perf_header__process_sections(struct perf_header *self, int fd, |
588 | int (*process)(struct perf_file_section *self, | |
ba21594c | 589 | struct perf_header *ph, |
37562eac | 590 | int feat, int fd)) |
2ba08250 | 591 | { |
9e827dd0 FW |
592 | struct perf_file_section *feat_sec; |
593 | int nr_sections; | |
594 | int sec_size; | |
595 | int idx = 0; | |
769885f3 | 596 | int err = -1, feat = 1; |
9e827dd0 FW |
597 | |
598 | nr_sections = bitmap_weight(self->adds_features, HEADER_FEAT_BITS); | |
599 | if (!nr_sections) | |
37562eac | 600 | return 0; |
9e827dd0 FW |
601 | |
602 | feat_sec = calloc(sizeof(*feat_sec), nr_sections); | |
603 | if (!feat_sec) | |
37562eac | 604 | return -1; |
9e827dd0 FW |
605 | |
606 | sec_size = sizeof(*feat_sec) * nr_sections; | |
607 | ||
f887f301 | 608 | lseek(fd, self->data_offset + self->data_size, SEEK_SET); |
9e827dd0 | 609 | |
ba21594c | 610 | if (perf_header__getbuffer64(self, fd, feat_sec, sec_size)) |
769885f3 | 611 | goto out_free; |
9e827dd0 | 612 | |
769885f3 | 613 | err = 0; |
37562eac ACM |
614 | while (idx < nr_sections && feat < HEADER_LAST_FEATURE) { |
615 | if (perf_header__has_feat(self, feat)) { | |
616 | struct perf_file_section *sec = &feat_sec[idx++]; | |
2ba08250 | 617 | |
ba21594c | 618 | err = process(sec, self, feat, fd); |
37562eac ACM |
619 | if (err < 0) |
620 | break; | |
621 | } | |
622 | ++feat; | |
2ba08250 | 623 | } |
769885f3 | 624 | out_free: |
37562eac ACM |
625 | free(feat_sec); |
626 | return err; | |
769885f3 | 627 | } |
4778d2e4 | 628 | |
37562eac ACM |
629 | int perf_file_header__read(struct perf_file_header *self, |
630 | struct perf_header *ph, int fd) | |
631 | { | |
632 | lseek(fd, 0, SEEK_SET); | |
37562eac | 633 | |
8dc58101 | 634 | if (do_read(fd, self, sizeof(*self)) <= 0 || |
ba21594c | 635 | memcmp(&self->magic, __perf_magic, sizeof(self->magic))) |
37562eac ACM |
636 | return -1; |
637 | ||
ba21594c ACM |
638 | if (self->attr_size != sizeof(struct perf_file_attr)) { |
639 | u64 attr_size = bswap_64(self->attr_size); | |
640 | ||
641 | if (attr_size != sizeof(struct perf_file_attr)) | |
642 | return -1; | |
643 | ||
644 | mem_bswap_64(self, offsetof(struct perf_file_header, | |
645 | adds_features)); | |
646 | ph->needs_swap = true; | |
647 | } | |
648 | ||
37562eac ACM |
649 | if (self->size != sizeof(*self)) { |
650 | /* Support the previous format */ | |
651 | if (self->size == offsetof(typeof(*self), adds_features)) | |
652 | bitmap_zero(self->adds_features, HEADER_FEAT_BITS); | |
653 | else | |
654 | return -1; | |
4778d2e4 | 655 | } |
9e827dd0 | 656 | |
37562eac | 657 | memcpy(&ph->adds_features, &self->adds_features, |
ba21594c ACM |
658 | sizeof(ph->adds_features)); |
659 | /* | |
660 | * FIXME: hack that assumes that if we need swap the perf.data file | |
661 | * may be coming from an arch with a different word-size, ergo different | |
662 | * DEFINE_BITMAP format, investigate more later, but for now its mostly | |
663 | * safe to assume that we have a build-id section. Trace files probably | |
664 | * have several other issues in this realm anyway... | |
665 | */ | |
666 | if (ph->needs_swap) { | |
667 | memset(&ph->adds_features, 0, sizeof(ph->adds_features)); | |
668 | perf_header__set_feat(ph, HEADER_BUILD_ID); | |
669 | } | |
37562eac ACM |
670 | |
671 | ph->event_offset = self->event_types.offset; | |
ba21594c ACM |
672 | ph->event_size = self->event_types.size; |
673 | ph->data_offset = self->data.offset; | |
37562eac ACM |
674 | ph->data_size = self->data.size; |
675 | return 0; | |
676 | } | |
677 | ||
a1645ce1 ZY |
678 | static int __event_process_build_id(struct build_id_event *bev, |
679 | char *filename, | |
680 | struct perf_session *session) | |
681 | { | |
682 | int err = -1; | |
683 | struct list_head *head; | |
23346f21 | 684 | struct machine *machine; |
a1645ce1 ZY |
685 | u16 misc; |
686 | struct dso *dso; | |
687 | enum dso_kernel_type dso_type; | |
688 | ||
23346f21 ACM |
689 | machine = perf_session__findnew_machine(session, bev->pid); |
690 | if (!machine) | |
a1645ce1 ZY |
691 | goto out; |
692 | ||
693 | misc = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
694 | ||
695 | switch (misc) { | |
696 | case PERF_RECORD_MISC_KERNEL: | |
697 | dso_type = DSO_TYPE_KERNEL; | |
23346f21 | 698 | head = &machine->kernel_dsos; |
a1645ce1 ZY |
699 | break; |
700 | case PERF_RECORD_MISC_GUEST_KERNEL: | |
701 | dso_type = DSO_TYPE_GUEST_KERNEL; | |
23346f21 | 702 | head = &machine->kernel_dsos; |
a1645ce1 ZY |
703 | break; |
704 | case PERF_RECORD_MISC_USER: | |
705 | case PERF_RECORD_MISC_GUEST_USER: | |
706 | dso_type = DSO_TYPE_USER; | |
23346f21 | 707 | head = &machine->user_dsos; |
a1645ce1 ZY |
708 | break; |
709 | default: | |
710 | goto out; | |
711 | } | |
712 | ||
713 | dso = __dsos__findnew(head, filename); | |
714 | if (dso != NULL) { | |
454c407e TZ |
715 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; |
716 | ||
a1645ce1 | 717 | dso__set_build_id(dso, &bev->build_id); |
454c407e TZ |
718 | |
719 | if (filename[0] == '[') | |
720 | dso->kernel = dso_type; | |
721 | ||
722 | build_id__sprintf(dso->build_id, sizeof(dso->build_id), | |
723 | sbuild_id); | |
724 | pr_debug("build id event received for %s: %s\n", | |
725 | dso->long_name, sbuild_id); | |
726 | } | |
a1645ce1 ZY |
727 | |
728 | err = 0; | |
729 | out: | |
730 | return err; | |
731 | } | |
732 | ||
733 | static int perf_header__read_build_ids(struct perf_header *self, | |
734 | int input, u64 offset, u64 size) | |
735 | { | |
736 | struct perf_session *session = container_of(self, | |
737 | struct perf_session, header); | |
738 | struct build_id_event bev; | |
739 | char filename[PATH_MAX]; | |
740 | u64 limit = offset + size; | |
741 | int err = -1; | |
742 | ||
743 | while (offset < limit) { | |
744 | ssize_t len; | |
745 | ||
746 | if (read(input, &bev, sizeof(bev)) != sizeof(bev)) | |
747 | goto out; | |
748 | ||
749 | if (self->needs_swap) | |
750 | perf_event_header__bswap(&bev.header); | |
751 | ||
752 | len = bev.header.size - sizeof(bev); | |
753 | if (read(input, filename, len) != len) | |
754 | goto out; | |
755 | ||
756 | __event_process_build_id(&bev, filename, session); | |
757 | ||
758 | offset += bev.header.size; | |
759 | } | |
760 | err = 0; | |
761 | out: | |
762 | return err; | |
763 | } | |
764 | ||
37562eac | 765 | static int perf_file_section__process(struct perf_file_section *self, |
ba21594c | 766 | struct perf_header *ph, |
37562eac ACM |
767 | int feat, int fd) |
768 | { | |
f887f301 | 769 | if (lseek(fd, self->offset, SEEK_SET) == (off_t)-1) { |
37562eac ACM |
770 | pr_debug("Failed to lseek to %Ld offset for feature %d, " |
771 | "continuing...\n", self->offset, feat); | |
772 | return 0; | |
773 | } | |
774 | ||
775 | switch (feat) { | |
776 | case HEADER_TRACE_INFO: | |
454c407e | 777 | trace_report(fd, false); |
37562eac ACM |
778 | break; |
779 | ||
780 | case HEADER_BUILD_ID: | |
ba21594c | 781 | if (perf_header__read_build_ids(ph, fd, self->offset, self->size)) |
37562eac ACM |
782 | pr_debug("Failed to read buildids, continuing...\n"); |
783 | break; | |
784 | default: | |
785 | pr_debug("unknown feature %d, continuing...\n", feat); | |
786 | } | |
787 | ||
788 | return 0; | |
789 | } | |
2ba08250 | 790 | |
8dc58101 | 791 | static int perf_file_header__read_pipe(struct perf_pipe_file_header *self, |
454c407e TZ |
792 | struct perf_header *ph, int fd, |
793 | bool repipe) | |
7c6a1c65 | 794 | { |
8dc58101 TZ |
795 | if (do_read(fd, self, sizeof(*self)) <= 0 || |
796 | memcmp(&self->magic, __perf_magic, sizeof(self->magic))) | |
797 | return -1; | |
798 | ||
454c407e TZ |
799 | if (repipe && do_write(STDOUT_FILENO, self, sizeof(*self)) < 0) |
800 | return -1; | |
801 | ||
8dc58101 TZ |
802 | if (self->size != sizeof(*self)) { |
803 | u64 size = bswap_64(self->size); | |
804 | ||
805 | if (size != sizeof(*self)) | |
806 | return -1; | |
807 | ||
808 | ph->needs_swap = true; | |
809 | } | |
810 | ||
811 | return 0; | |
812 | } | |
813 | ||
814 | static int perf_header__read_pipe(struct perf_session *session, int fd) | |
815 | { | |
816 | struct perf_header *self = &session->header; | |
817 | struct perf_pipe_file_header f_header; | |
818 | ||
454c407e TZ |
819 | if (perf_file_header__read_pipe(&f_header, self, fd, |
820 | session->repipe) < 0) { | |
8dc58101 TZ |
821 | pr_debug("incompatible file format\n"); |
822 | return -EINVAL; | |
823 | } | |
824 | ||
825 | session->fd = fd; | |
826 | ||
827 | return 0; | |
828 | } | |
829 | ||
830 | int perf_header__read(struct perf_session *session, int fd) | |
831 | { | |
832 | struct perf_header *self = &session->header; | |
ba21594c | 833 | struct perf_file_header f_header; |
7c6a1c65 PZ |
834 | struct perf_file_attr f_attr; |
835 | u64 f_id; | |
7c6a1c65 PZ |
836 | int nr_attrs, nr_ids, i, j; |
837 | ||
8dc58101 TZ |
838 | if (session->fd_pipe) |
839 | return perf_header__read_pipe(session, fd); | |
840 | ||
4dc0a04b ACM |
841 | if (perf_file_header__read(&f_header, self, fd) < 0) { |
842 | pr_debug("incompatible file format\n"); | |
843 | return -EINVAL; | |
844 | } | |
7c6a1c65 PZ |
845 | |
846 | nr_attrs = f_header.attrs.size / sizeof(f_attr); | |
847 | lseek(fd, f_header.attrs.offset, SEEK_SET); | |
848 | ||
849 | for (i = 0; i < nr_attrs; i++) { | |
850 | struct perf_header_attr *attr; | |
1c222bce | 851 | off_t tmp; |
7c6a1c65 | 852 | |
ba21594c | 853 | if (perf_header__getbuffer64(self, fd, &f_attr, sizeof(f_attr))) |
769885f3 | 854 | goto out_errno; |
ba21594c | 855 | |
1c222bce | 856 | tmp = lseek(fd, 0, SEEK_CUR); |
7c6a1c65 PZ |
857 | |
858 | attr = perf_header_attr__new(&f_attr.attr); | |
dc79c0fc | 859 | if (attr == NULL) |
4dc0a04b | 860 | return -ENOMEM; |
7c6a1c65 PZ |
861 | |
862 | nr_ids = f_attr.ids.size / sizeof(u64); | |
863 | lseek(fd, f_attr.ids.offset, SEEK_SET); | |
864 | ||
865 | for (j = 0; j < nr_ids; j++) { | |
ba21594c | 866 | if (perf_header__getbuffer64(self, fd, &f_id, sizeof(f_id))) |
769885f3 | 867 | goto out_errno; |
7c6a1c65 | 868 | |
4dc0a04b ACM |
869 | if (perf_header_attr__add_id(attr, f_id) < 0) { |
870 | perf_header_attr__delete(attr); | |
871 | return -ENOMEM; | |
872 | } | |
873 | } | |
874 | if (perf_header__add_attr(self, attr) < 0) { | |
875 | perf_header_attr__delete(attr); | |
876 | return -ENOMEM; | |
7c6a1c65 | 877 | } |
11deb1f9 | 878 | |
7c6a1c65 PZ |
879 | lseek(fd, tmp, SEEK_SET); |
880 | } | |
881 | ||
8755a8f2 AV |
882 | if (f_header.event_types.size) { |
883 | lseek(fd, f_header.event_types.offset, SEEK_SET); | |
884 | events = malloc(f_header.event_types.size); | |
4dc0a04b ACM |
885 | if (events == NULL) |
886 | return -ENOMEM; | |
ba21594c ACM |
887 | if (perf_header__getbuffer64(self, fd, events, |
888 | f_header.event_types.size)) | |
769885f3 | 889 | goto out_errno; |
8755a8f2 AV |
890 | event_count = f_header.event_types.size / sizeof(struct perf_trace_event_type); |
891 | } | |
03456a15 | 892 | |
37562eac | 893 | perf_header__process_sections(self, fd, perf_file_section__process); |
4778d2e4 | 894 | |
2e01d179 | 895 | lseek(fd, self->data_offset, SEEK_SET); |
7c6a1c65 PZ |
896 | |
897 | self->frozen = 1; | |
4dc0a04b | 898 | return 0; |
769885f3 ACM |
899 | out_errno: |
900 | return -errno; | |
7c6a1c65 | 901 | } |
0d3a5c88 FW |
902 | |
903 | u64 perf_header__sample_type(struct perf_header *header) | |
904 | { | |
905 | u64 type = 0; | |
906 | int i; | |
907 | ||
908 | for (i = 0; i < header->attrs; i++) { | |
909 | struct perf_header_attr *attr = header->attr[i]; | |
910 | ||
911 | if (!type) | |
912 | type = attr->attr.sample_type; | |
913 | else if (type != attr->attr.sample_type) | |
914 | die("non matching sample_type"); | |
915 | } | |
916 | ||
917 | return type; | |
918 | } | |
919 | ||
cdd6c482 | 920 | struct perf_event_attr * |
0d3a5c88 FW |
921 | perf_header__find_attr(u64 id, struct perf_header *header) |
922 | { | |
923 | int i; | |
924 | ||
02bf60aa AB |
925 | /* |
926 | * We set id to -1 if the data file doesn't contain sample | |
927 | * ids. Check for this and avoid walking through the entire | |
928 | * list of ids which may be large. | |
929 | */ | |
930 | if (id == -1ULL) | |
931 | return NULL; | |
932 | ||
0d3a5c88 FW |
933 | for (i = 0; i < header->attrs; i++) { |
934 | struct perf_header_attr *attr = header->attr[i]; | |
935 | int j; | |
936 | ||
937 | for (j = 0; j < attr->ids; j++) { | |
938 | if (attr->id[j] == id) | |
939 | return &attr->attr; | |
940 | } | |
941 | } | |
942 | ||
943 | return NULL; | |
944 | } | |
2c46dbb5 TZ |
945 | |
946 | int event__synthesize_attr(struct perf_event_attr *attr, u16 ids, u64 *id, | |
947 | event__handler_t process, | |
948 | struct perf_session *session) | |
949 | { | |
950 | event_t *ev; | |
951 | size_t size; | |
952 | int err; | |
953 | ||
954 | size = sizeof(struct perf_event_attr); | |
955 | size = ALIGN(size, sizeof(u64)); | |
956 | size += sizeof(struct perf_event_header); | |
957 | size += ids * sizeof(u64); | |
958 | ||
959 | ev = malloc(size); | |
960 | ||
961 | ev->attr.attr = *attr; | |
962 | memcpy(ev->attr.id, id, ids * sizeof(u64)); | |
963 | ||
964 | ev->attr.header.type = PERF_RECORD_HEADER_ATTR; | |
965 | ev->attr.header.size = size; | |
966 | ||
967 | err = process(ev, session); | |
968 | ||
969 | free(ev); | |
970 | ||
971 | return err; | |
972 | } | |
973 | ||
974 | int event__synthesize_attrs(struct perf_header *self, | |
975 | event__handler_t process, | |
976 | struct perf_session *session) | |
977 | { | |
978 | struct perf_header_attr *attr; | |
979 | int i, err = 0; | |
980 | ||
981 | for (i = 0; i < self->attrs; i++) { | |
982 | attr = self->attr[i]; | |
983 | ||
984 | err = event__synthesize_attr(&attr->attr, attr->ids, attr->id, | |
985 | process, session); | |
986 | if (err) { | |
987 | pr_debug("failed to create perf header attribute\n"); | |
988 | return err; | |
989 | } | |
990 | } | |
991 | ||
992 | return err; | |
993 | } | |
994 | ||
995 | int event__process_attr(event_t *self, struct perf_session *session) | |
996 | { | |
997 | struct perf_header_attr *attr; | |
998 | unsigned int i, ids, n_ids; | |
999 | ||
1000 | attr = perf_header_attr__new(&self->attr.attr); | |
1001 | if (attr == NULL) | |
1002 | return -ENOMEM; | |
1003 | ||
1004 | ids = self->header.size; | |
1005 | ids -= (void *)&self->attr.id - (void *)self; | |
1006 | n_ids = ids / sizeof(u64); | |
1007 | ||
1008 | for (i = 0; i < n_ids; i++) { | |
1009 | if (perf_header_attr__add_id(attr, self->attr.id[i]) < 0) { | |
1010 | perf_header_attr__delete(attr); | |
1011 | return -ENOMEM; | |
1012 | } | |
1013 | } | |
1014 | ||
1015 | if (perf_header__add_attr(&session->header, attr) < 0) { | |
1016 | perf_header_attr__delete(attr); | |
1017 | return -ENOMEM; | |
1018 | } | |
1019 | ||
1020 | perf_session__update_sample_type(session); | |
1021 | ||
1022 | return 0; | |
1023 | } | |
cd19a035 TZ |
1024 | |
1025 | int event__synthesize_event_type(u64 event_id, char *name, | |
1026 | event__handler_t process, | |
1027 | struct perf_session *session) | |
1028 | { | |
1029 | event_t ev; | |
1030 | size_t size = 0; | |
1031 | int err = 0; | |
1032 | ||
1033 | memset(&ev, 0, sizeof(ev)); | |
1034 | ||
1035 | ev.event_type.event_type.event_id = event_id; | |
1036 | memset(ev.event_type.event_type.name, 0, MAX_EVENT_NAME); | |
1037 | strncpy(ev.event_type.event_type.name, name, MAX_EVENT_NAME - 1); | |
1038 | ||
1039 | ev.event_type.header.type = PERF_RECORD_HEADER_EVENT_TYPE; | |
1040 | size = strlen(name); | |
1041 | size = ALIGN(size, sizeof(u64)); | |
1042 | ev.event_type.header.size = sizeof(ev.event_type) - | |
1043 | (sizeof(ev.event_type.event_type.name) - size); | |
1044 | ||
1045 | err = process(&ev, session); | |
1046 | ||
1047 | return err; | |
1048 | } | |
1049 | ||
1050 | int event__synthesize_event_types(event__handler_t process, | |
1051 | struct perf_session *session) | |
1052 | { | |
1053 | struct perf_trace_event_type *type; | |
1054 | int i, err = 0; | |
1055 | ||
1056 | for (i = 0; i < event_count; i++) { | |
1057 | type = &events[i]; | |
1058 | ||
1059 | err = event__synthesize_event_type(type->event_id, type->name, | |
1060 | process, session); | |
1061 | if (err) { | |
1062 | pr_debug("failed to create perf header event type\n"); | |
1063 | return err; | |
1064 | } | |
1065 | } | |
1066 | ||
1067 | return err; | |
1068 | } | |
1069 | ||
1070 | int event__process_event_type(event_t *self, | |
1071 | struct perf_session *session __unused) | |
1072 | { | |
1073 | if (perf_header__push_event(self->event_type.event_type.event_id, | |
1074 | self->event_type.event_type.name) < 0) | |
1075 | return -ENOMEM; | |
1076 | ||
1077 | return 0; | |
1078 | } | |
9215545e TZ |
1079 | |
1080 | int event__synthesize_tracing_data(int fd, struct perf_event_attr *pattrs, | |
1081 | int nb_events, | |
1082 | event__handler_t process, | |
1083 | struct perf_session *session __unused) | |
1084 | { | |
1085 | event_t ev; | |
1086 | ssize_t size = 0, aligned_size = 0, padding; | |
1087 | int err = 0; | |
1088 | ||
1089 | memset(&ev, 0, sizeof(ev)); | |
1090 | ||
1091 | ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA; | |
1092 | size = read_tracing_data_size(fd, pattrs, nb_events); | |
1093 | if (size <= 0) | |
1094 | return size; | |
1095 | aligned_size = ALIGN(size, sizeof(u64)); | |
1096 | padding = aligned_size - size; | |
1097 | ev.tracing_data.header.size = sizeof(ev.tracing_data); | |
1098 | ev.tracing_data.size = aligned_size; | |
1099 | ||
1100 | process(&ev, session); | |
1101 | ||
1102 | err = read_tracing_data(fd, pattrs, nb_events); | |
1103 | write_padded(fd, NULL, 0, padding); | |
1104 | ||
1105 | return aligned_size; | |
1106 | } | |
1107 | ||
1108 | int event__process_tracing_data(event_t *self, | |
1109 | struct perf_session *session) | |
1110 | { | |
1111 | ssize_t size_read, padding, size = self->tracing_data.size; | |
1112 | off_t offset = lseek(session->fd, 0, SEEK_CUR); | |
1113 | char buf[BUFSIZ]; | |
1114 | ||
1115 | /* setup for reading amidst mmap */ | |
1116 | lseek(session->fd, offset + sizeof(struct tracing_data_event), | |
1117 | SEEK_SET); | |
1118 | ||
454c407e | 1119 | size_read = trace_report(session->fd, session->repipe); |
9215545e TZ |
1120 | |
1121 | padding = ALIGN(size_read, sizeof(u64)) - size_read; | |
1122 | ||
1123 | if (read(session->fd, buf, padding) < 0) | |
1124 | die("reading input file"); | |
454c407e TZ |
1125 | if (session->repipe) { |
1126 | int retw = write(STDOUT_FILENO, buf, padding); | |
1127 | if (retw <= 0 || retw != padding) | |
1128 | die("repiping tracing data padding"); | |
1129 | } | |
9215545e TZ |
1130 | |
1131 | if (size_read + padding != size) | |
1132 | die("tracing data size mismatch"); | |
1133 | ||
1134 | return size_read + padding; | |
1135 | } | |
c7929e47 TZ |
1136 | |
1137 | int event__synthesize_build_id(struct dso *pos, u16 misc, | |
454c407e TZ |
1138 | event__handler_t process, |
1139 | struct machine *machine, | |
c7929e47 TZ |
1140 | struct perf_session *session) |
1141 | { | |
1142 | event_t ev; | |
1143 | size_t len; | |
1144 | int err = 0; | |
1145 | ||
1146 | if (!pos->hit) | |
1147 | return err; | |
1148 | ||
1149 | memset(&ev, 0, sizeof(ev)); | |
1150 | ||
1151 | len = pos->long_name_len + 1; | |
1152 | len = ALIGN(len, NAME_ALIGN); | |
1153 | memcpy(&ev.build_id.build_id, pos->build_id, sizeof(pos->build_id)); | |
1154 | ev.build_id.header.type = PERF_RECORD_HEADER_BUILD_ID; | |
1155 | ev.build_id.header.misc = misc; | |
23346f21 | 1156 | ev.build_id.pid = machine->pid; |
c7929e47 TZ |
1157 | ev.build_id.header.size = sizeof(ev.build_id) + len; |
1158 | memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len); | |
1159 | ||
1160 | err = process(&ev, session); | |
1161 | ||
1162 | return err; | |
1163 | } | |
1164 | ||
c7929e47 | 1165 | int event__process_build_id(event_t *self, |
a1645ce1 | 1166 | struct perf_session *session) |
c7929e47 | 1167 | { |
a1645ce1 ZY |
1168 | __event_process_build_id(&self->build_id, |
1169 | self->build_id.filename, | |
1170 | session); | |
c7929e47 TZ |
1171 | return 0; |
1172 | } |