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 | ||
f869097e ACM |
224 | static int machine__write_buildid_table(struct machine *self, int fd) |
225 | { | |
226 | int err; | |
227 | u16 kmisc = PERF_RECORD_MISC_KERNEL, | |
228 | umisc = PERF_RECORD_MISC_USER; | |
229 | ||
230 | if (!machine__is_host(self)) { | |
231 | kmisc = PERF_RECORD_MISC_GUEST_KERNEL; | |
232 | umisc = PERF_RECORD_MISC_GUEST_USER; | |
233 | } | |
234 | ||
235 | err = __dsos__write_buildid_table(&self->kernel_dsos, self->pid, | |
236 | kmisc, fd); | |
237 | if (err == 0) | |
238 | err = __dsos__write_buildid_table(&self->user_dsos, | |
239 | self->pid, umisc, fd); | |
240 | return err; | |
241 | } | |
242 | ||
a1645ce1 | 243 | static int dsos__write_buildid_table(struct perf_header *header, int fd) |
b0da954a | 244 | { |
a1645ce1 ZY |
245 | struct perf_session *session = container_of(header, |
246 | struct perf_session, header); | |
247 | struct rb_node *nd; | |
f869097e ACM |
248 | int err = machine__write_buildid_table(&session->host_machine, fd); |
249 | ||
250 | if (err) | |
251 | return err; | |
a1645ce1 | 252 | |
23346f21 ACM |
253 | for (nd = rb_first(&session->machines); nd; nd = rb_next(nd)) { |
254 | struct machine *pos = rb_entry(nd, struct machine, rb_node); | |
f869097e | 255 | err = machine__write_buildid_table(pos, fd); |
a1645ce1 ZY |
256 | if (err) |
257 | break; | |
258 | } | |
b0da954a ACM |
259 | return err; |
260 | } | |
261 | ||
ef12a141 ACM |
262 | int build_id_cache__add_s(const char *sbuild_id, const char *debugdir, |
263 | const char *name, bool is_kallsyms) | |
4cf40131 ACM |
264 | { |
265 | const size_t size = PATH_MAX; | |
266 | char *filename = malloc(size), | |
ef12a141 | 267 | *linkname = malloc(size), *targetname; |
4cf40131 ACM |
268 | int len, err = -1; |
269 | ||
270 | if (filename == NULL || linkname == NULL) | |
271 | goto out_free; | |
272 | ||
9e201442 | 273 | len = snprintf(filename, size, "%s%s%s", |
ef12a141 | 274 | debugdir, is_kallsyms ? "/" : "", name); |
4cf40131 ACM |
275 | if (mkdir_p(filename, 0755)) |
276 | goto out_free; | |
277 | ||
ef12a141 | 278 | snprintf(filename + len, sizeof(filename) - len, "/%s", sbuild_id); |
4cf40131 | 279 | |
9e201442 ACM |
280 | if (access(filename, F_OK)) { |
281 | if (is_kallsyms) { | |
282 | if (copyfile("/proc/kallsyms", filename)) | |
283 | goto out_free; | |
ef12a141 | 284 | } else if (link(name, filename) && copyfile(name, filename)) |
9e201442 ACM |
285 | goto out_free; |
286 | } | |
4cf40131 ACM |
287 | |
288 | len = snprintf(linkname, size, "%s/.build-id/%.2s", | |
289 | debugdir, sbuild_id); | |
290 | ||
291 | if (access(linkname, X_OK) && mkdir_p(linkname, 0755)) | |
292 | goto out_free; | |
293 | ||
294 | snprintf(linkname + len, size - len, "/%s", sbuild_id + 2); | |
295 | targetname = filename + strlen(debugdir) - 5; | |
296 | memcpy(targetname, "../..", 5); | |
297 | ||
298 | if (symlink(targetname, linkname) == 0) | |
299 | err = 0; | |
300 | out_free: | |
301 | free(filename); | |
302 | free(linkname); | |
303 | return err; | |
304 | } | |
305 | ||
ef12a141 ACM |
306 | static int build_id_cache__add_b(const u8 *build_id, size_t build_id_size, |
307 | const char *name, const char *debugdir, | |
308 | bool is_kallsyms) | |
309 | { | |
310 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; | |
311 | ||
312 | build_id__sprintf(build_id, build_id_size, sbuild_id); | |
313 | ||
314 | return build_id_cache__add_s(sbuild_id, debugdir, name, is_kallsyms); | |
315 | } | |
316 | ||
317 | int build_id_cache__remove_s(const char *sbuild_id, const char *debugdir) | |
318 | { | |
319 | const size_t size = PATH_MAX; | |
320 | char *filename = malloc(size), | |
321 | *linkname = malloc(size); | |
322 | int err = -1; | |
323 | ||
324 | if (filename == NULL || linkname == NULL) | |
325 | goto out_free; | |
326 | ||
327 | snprintf(linkname, size, "%s/.build-id/%.2s/%s", | |
328 | debugdir, sbuild_id, sbuild_id + 2); | |
329 | ||
330 | if (access(linkname, F_OK)) | |
331 | goto out_free; | |
332 | ||
333 | if (readlink(linkname, filename, size) < 0) | |
334 | goto out_free; | |
335 | ||
336 | if (unlink(linkname)) | |
337 | goto out_free; | |
338 | ||
339 | /* | |
340 | * Since the link is relative, we must make it absolute: | |
341 | */ | |
342 | snprintf(linkname, size, "%s/.build-id/%.2s/%s", | |
343 | debugdir, sbuild_id, filename); | |
344 | ||
345 | if (unlink(linkname)) | |
346 | goto out_free; | |
347 | ||
348 | err = 0; | |
349 | out_free: | |
350 | free(filename); | |
351 | free(linkname); | |
352 | return err; | |
353 | } | |
354 | ||
355 | static int dso__cache_build_id(struct dso *self, const char *debugdir) | |
356 | { | |
357 | bool is_kallsyms = self->kernel && self->long_name[0] != '/'; | |
358 | ||
359 | return build_id_cache__add_b(self->build_id, sizeof(self->build_id), | |
360 | self->long_name, debugdir, is_kallsyms); | |
361 | } | |
362 | ||
4cf40131 ACM |
363 | static int __dsos__cache_build_ids(struct list_head *head, const char *debugdir) |
364 | { | |
365 | struct dso *pos; | |
366 | int err = 0; | |
367 | ||
368 | dsos__for_each_with_build_id(pos, head) | |
369 | if (dso__cache_build_id(pos, debugdir)) | |
370 | err = -1; | |
371 | ||
372 | return err; | |
373 | } | |
374 | ||
f869097e ACM |
375 | static int machine__cache_build_ids(struct machine *self, const char *debugdir) |
376 | { | |
377 | int ret = __dsos__cache_build_ids(&self->kernel_dsos, debugdir); | |
378 | ret |= __dsos__cache_build_ids(&self->user_dsos, debugdir); | |
379 | return ret; | |
380 | } | |
381 | ||
382 | static int perf_session__cache_build_ids(struct perf_session *self) | |
4cf40131 | 383 | { |
a1645ce1 | 384 | struct rb_node *nd; |
f869097e | 385 | int ret; |
4cf40131 ACM |
386 | char debugdir[PATH_MAX]; |
387 | ||
388 | snprintf(debugdir, sizeof(debugdir), "%s/%s", getenv("HOME"), | |
389 | DEBUG_CACHE_DIR); | |
390 | ||
391 | if (mkdir(debugdir, 0755) != 0 && errno != EEXIST) | |
392 | return -1; | |
393 | ||
f869097e ACM |
394 | ret = machine__cache_build_ids(&self->host_machine, debugdir); |
395 | ||
396 | for (nd = rb_first(&self->machines); nd; nd = rb_next(nd)) { | |
23346f21 | 397 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
f869097e | 398 | ret |= machine__cache_build_ids(pos, debugdir); |
a1645ce1 ZY |
399 | } |
400 | return ret ? -1 : 0; | |
401 | } | |
402 | ||
f869097e ACM |
403 | static bool machine__read_build_ids(struct machine *self, bool with_hits) |
404 | { | |
405 | bool ret = __dsos__read_build_ids(&self->kernel_dsos, with_hits); | |
406 | ret |= __dsos__read_build_ids(&self->user_dsos, with_hits); | |
407 | return ret; | |
408 | } | |
409 | ||
410 | static bool perf_session__read_build_ids(struct perf_session *self, bool with_hits) | |
a1645ce1 | 411 | { |
a1645ce1 | 412 | struct rb_node *nd; |
f869097e | 413 | bool ret = machine__read_build_ids(&self->host_machine, with_hits); |
a1645ce1 | 414 | |
f869097e | 415 | for (nd = rb_first(&self->machines); nd; nd = rb_next(nd)) { |
23346f21 | 416 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
f869097e | 417 | ret |= machine__read_build_ids(pos, with_hits); |
a1645ce1 ZY |
418 | } |
419 | ||
420 | return ret; | |
4cf40131 ACM |
421 | } |
422 | ||
d5eed904 | 423 | static int perf_header__adds_write(struct perf_header *self, int fd) |
2ba08250 | 424 | { |
9e827dd0 | 425 | int nr_sections; |
f869097e | 426 | struct perf_session *session; |
9e827dd0 FW |
427 | struct perf_file_section *feat_sec; |
428 | int sec_size; | |
429 | u64 sec_start; | |
d5eed904 | 430 | int idx = 0, err; |
9e827dd0 | 431 | |
f869097e ACM |
432 | session = container_of(self, struct perf_session, header); |
433 | if (perf_session__read_build_ids(session, true)) | |
9e827dd0 FW |
434 | perf_header__set_feat(self, HEADER_BUILD_ID); |
435 | ||
436 | nr_sections = bitmap_weight(self->adds_features, HEADER_FEAT_BITS); | |
437 | if (!nr_sections) | |
d5eed904 | 438 | return 0; |
9e827dd0 FW |
439 | |
440 | feat_sec = calloc(sizeof(*feat_sec), nr_sections); | |
d5eed904 ACM |
441 | if (feat_sec == NULL) |
442 | return -ENOMEM; | |
9e827dd0 FW |
443 | |
444 | sec_size = sizeof(*feat_sec) * nr_sections; | |
445 | ||
446 | sec_start = self->data_offset + self->data_size; | |
f887f301 | 447 | lseek(fd, sec_start + sec_size, SEEK_SET); |
2ba08250 | 448 | |
3e13ab2d | 449 | if (perf_header__has_feat(self, HEADER_TRACE_INFO)) { |
9e827dd0 FW |
450 | struct perf_file_section *trace_sec; |
451 | ||
452 | trace_sec = &feat_sec[idx++]; | |
453 | ||
2ba08250 | 454 | /* Write trace info */ |
f887f301 | 455 | trace_sec->offset = lseek(fd, 0, SEEK_CUR); |
2ba08250 | 456 | read_tracing_data(fd, attrs, nr_counters); |
f887f301 | 457 | trace_sec->size = lseek(fd, 0, SEEK_CUR) - trace_sec->offset; |
2ba08250 | 458 | } |
8671dab9 | 459 | |
9e827dd0 FW |
460 | if (perf_header__has_feat(self, HEADER_BUILD_ID)) { |
461 | struct perf_file_section *buildid_sec; | |
462 | ||
463 | buildid_sec = &feat_sec[idx++]; | |
464 | ||
465 | /* Write build-ids */ | |
f887f301 | 466 | buildid_sec->offset = lseek(fd, 0, SEEK_CUR); |
a1645ce1 | 467 | err = dsos__write_buildid_table(self, fd); |
d5eed904 ACM |
468 | if (err < 0) { |
469 | pr_debug("failed to write buildid table\n"); | |
470 | goto out_free; | |
471 | } | |
f887f301 XG |
472 | buildid_sec->size = lseek(fd, 0, SEEK_CUR) - |
473 | buildid_sec->offset; | |
f869097e | 474 | perf_session__cache_build_ids(session); |
8671dab9 | 475 | } |
9e827dd0 | 476 | |
f887f301 | 477 | lseek(fd, sec_start, SEEK_SET); |
d5eed904 ACM |
478 | err = do_write(fd, feat_sec, sec_size); |
479 | if (err < 0) | |
480 | pr_debug("failed to write feature section\n"); | |
481 | out_free: | |
9e827dd0 | 482 | free(feat_sec); |
d5eed904 | 483 | return err; |
9e827dd0 | 484 | } |
2ba08250 | 485 | |
8dc58101 TZ |
486 | int perf_header__write_pipe(int fd) |
487 | { | |
488 | struct perf_pipe_file_header f_header; | |
489 | int err; | |
490 | ||
491 | f_header = (struct perf_pipe_file_header){ | |
492 | .magic = PERF_MAGIC, | |
493 | .size = sizeof(f_header), | |
494 | }; | |
495 | ||
496 | err = do_write(fd, &f_header, sizeof(f_header)); | |
497 | if (err < 0) { | |
498 | pr_debug("failed to write perf pipe header\n"); | |
499 | return err; | |
500 | } | |
501 | ||
502 | return 0; | |
503 | } | |
504 | ||
d5eed904 | 505 | int perf_header__write(struct perf_header *self, int fd, bool at_exit) |
7c6a1c65 PZ |
506 | { |
507 | struct perf_file_header f_header; | |
508 | struct perf_file_attr f_attr; | |
509 | struct perf_header_attr *attr; | |
d5eed904 | 510 | int i, err; |
7c6a1c65 PZ |
511 | |
512 | lseek(fd, sizeof(f_header), SEEK_SET); | |
513 | ||
7c6a1c65 PZ |
514 | for (i = 0; i < self->attrs; i++) { |
515 | attr = self->attr[i]; | |
516 | ||
517 | attr->id_offset = lseek(fd, 0, SEEK_CUR); | |
d5eed904 ACM |
518 | err = do_write(fd, attr->id, attr->ids * sizeof(u64)); |
519 | if (err < 0) { | |
520 | pr_debug("failed to write perf header\n"); | |
521 | return err; | |
522 | } | |
7c6a1c65 PZ |
523 | } |
524 | ||
525 | ||
526 | self->attr_offset = lseek(fd, 0, SEEK_CUR); | |
527 | ||
528 | for (i = 0; i < self->attrs; i++) { | |
529 | attr = self->attr[i]; | |
530 | ||
531 | f_attr = (struct perf_file_attr){ | |
532 | .attr = attr->attr, | |
533 | .ids = { | |
534 | .offset = attr->id_offset, | |
535 | .size = attr->ids * sizeof(u64), | |
536 | } | |
537 | }; | |
d5eed904 ACM |
538 | err = do_write(fd, &f_attr, sizeof(f_attr)); |
539 | if (err < 0) { | |
540 | pr_debug("failed to write perf header attribute\n"); | |
541 | return err; | |
542 | } | |
7c6a1c65 PZ |
543 | } |
544 | ||
8755a8f2 AV |
545 | self->event_offset = lseek(fd, 0, SEEK_CUR); |
546 | self->event_size = event_count * sizeof(struct perf_trace_event_type); | |
d5eed904 ACM |
547 | if (events) { |
548 | err = do_write(fd, events, self->event_size); | |
549 | if (err < 0) { | |
550 | pr_debug("failed to write perf header events\n"); | |
551 | return err; | |
552 | } | |
553 | } | |
8755a8f2 | 554 | |
7c6a1c65 PZ |
555 | self->data_offset = lseek(fd, 0, SEEK_CUR); |
556 | ||
d5eed904 ACM |
557 | if (at_exit) { |
558 | err = perf_header__adds_write(self, fd); | |
559 | if (err < 0) | |
560 | return err; | |
561 | } | |
9e827dd0 | 562 | |
7c6a1c65 PZ |
563 | f_header = (struct perf_file_header){ |
564 | .magic = PERF_MAGIC, | |
565 | .size = sizeof(f_header), | |
566 | .attr_size = sizeof(f_attr), | |
567 | .attrs = { | |
568 | .offset = self->attr_offset, | |
569 | .size = self->attrs * sizeof(f_attr), | |
570 | }, | |
571 | .data = { | |
572 | .offset = self->data_offset, | |
573 | .size = self->data_size, | |
574 | }, | |
8755a8f2 AV |
575 | .event_types = { |
576 | .offset = self->event_offset, | |
577 | .size = self->event_size, | |
578 | }, | |
7c6a1c65 PZ |
579 | }; |
580 | ||
db9f11e3 | 581 | memcpy(&f_header.adds_features, &self->adds_features, sizeof(self->adds_features)); |
2ba08250 | 582 | |
7c6a1c65 | 583 | lseek(fd, 0, SEEK_SET); |
d5eed904 ACM |
584 | err = do_write(fd, &f_header, sizeof(f_header)); |
585 | if (err < 0) { | |
586 | pr_debug("failed to write perf header\n"); | |
587 | return err; | |
588 | } | |
f887f301 | 589 | lseek(fd, self->data_offset + self->data_size, SEEK_SET); |
7c6a1c65 PZ |
590 | |
591 | self->frozen = 1; | |
d5eed904 | 592 | return 0; |
7c6a1c65 PZ |
593 | } |
594 | ||
ba21594c ACM |
595 | static int perf_header__getbuffer64(struct perf_header *self, |
596 | int fd, void *buf, size_t size) | |
597 | { | |
8dc58101 | 598 | if (do_read(fd, buf, size) <= 0) |
ba21594c ACM |
599 | return -1; |
600 | ||
601 | if (self->needs_swap) | |
602 | mem_bswap_64(buf, size); | |
603 | ||
604 | return 0; | |
605 | } | |
606 | ||
37562eac ACM |
607 | int perf_header__process_sections(struct perf_header *self, int fd, |
608 | int (*process)(struct perf_file_section *self, | |
ba21594c | 609 | struct perf_header *ph, |
37562eac | 610 | int feat, int fd)) |
2ba08250 | 611 | { |
9e827dd0 FW |
612 | struct perf_file_section *feat_sec; |
613 | int nr_sections; | |
614 | int sec_size; | |
615 | int idx = 0; | |
769885f3 | 616 | int err = -1, feat = 1; |
9e827dd0 FW |
617 | |
618 | nr_sections = bitmap_weight(self->adds_features, HEADER_FEAT_BITS); | |
619 | if (!nr_sections) | |
37562eac | 620 | return 0; |
9e827dd0 FW |
621 | |
622 | feat_sec = calloc(sizeof(*feat_sec), nr_sections); | |
623 | if (!feat_sec) | |
37562eac | 624 | return -1; |
9e827dd0 FW |
625 | |
626 | sec_size = sizeof(*feat_sec) * nr_sections; | |
627 | ||
f887f301 | 628 | lseek(fd, self->data_offset + self->data_size, SEEK_SET); |
9e827dd0 | 629 | |
ba21594c | 630 | if (perf_header__getbuffer64(self, fd, feat_sec, sec_size)) |
769885f3 | 631 | goto out_free; |
9e827dd0 | 632 | |
769885f3 | 633 | err = 0; |
37562eac ACM |
634 | while (idx < nr_sections && feat < HEADER_LAST_FEATURE) { |
635 | if (perf_header__has_feat(self, feat)) { | |
636 | struct perf_file_section *sec = &feat_sec[idx++]; | |
2ba08250 | 637 | |
ba21594c | 638 | err = process(sec, self, feat, fd); |
37562eac ACM |
639 | if (err < 0) |
640 | break; | |
641 | } | |
642 | ++feat; | |
2ba08250 | 643 | } |
769885f3 | 644 | out_free: |
37562eac ACM |
645 | free(feat_sec); |
646 | return err; | |
769885f3 | 647 | } |
4778d2e4 | 648 | |
37562eac ACM |
649 | int perf_file_header__read(struct perf_file_header *self, |
650 | struct perf_header *ph, int fd) | |
651 | { | |
652 | lseek(fd, 0, SEEK_SET); | |
37562eac | 653 | |
8dc58101 | 654 | if (do_read(fd, self, sizeof(*self)) <= 0 || |
ba21594c | 655 | memcmp(&self->magic, __perf_magic, sizeof(self->magic))) |
37562eac ACM |
656 | return -1; |
657 | ||
ba21594c ACM |
658 | if (self->attr_size != sizeof(struct perf_file_attr)) { |
659 | u64 attr_size = bswap_64(self->attr_size); | |
660 | ||
661 | if (attr_size != sizeof(struct perf_file_attr)) | |
662 | return -1; | |
663 | ||
664 | mem_bswap_64(self, offsetof(struct perf_file_header, | |
665 | adds_features)); | |
666 | ph->needs_swap = true; | |
667 | } | |
668 | ||
37562eac ACM |
669 | if (self->size != sizeof(*self)) { |
670 | /* Support the previous format */ | |
671 | if (self->size == offsetof(typeof(*self), adds_features)) | |
672 | bitmap_zero(self->adds_features, HEADER_FEAT_BITS); | |
673 | else | |
674 | return -1; | |
4778d2e4 | 675 | } |
9e827dd0 | 676 | |
37562eac | 677 | memcpy(&ph->adds_features, &self->adds_features, |
ba21594c ACM |
678 | sizeof(ph->adds_features)); |
679 | /* | |
680 | * FIXME: hack that assumes that if we need swap the perf.data file | |
681 | * may be coming from an arch with a different word-size, ergo different | |
682 | * DEFINE_BITMAP format, investigate more later, but for now its mostly | |
683 | * safe to assume that we have a build-id section. Trace files probably | |
684 | * have several other issues in this realm anyway... | |
685 | */ | |
686 | if (ph->needs_swap) { | |
687 | memset(&ph->adds_features, 0, sizeof(ph->adds_features)); | |
688 | perf_header__set_feat(ph, HEADER_BUILD_ID); | |
689 | } | |
37562eac ACM |
690 | |
691 | ph->event_offset = self->event_types.offset; | |
ba21594c ACM |
692 | ph->event_size = self->event_types.size; |
693 | ph->data_offset = self->data.offset; | |
37562eac ACM |
694 | ph->data_size = self->data.size; |
695 | return 0; | |
696 | } | |
697 | ||
a1645ce1 ZY |
698 | static int __event_process_build_id(struct build_id_event *bev, |
699 | char *filename, | |
700 | struct perf_session *session) | |
701 | { | |
702 | int err = -1; | |
703 | struct list_head *head; | |
23346f21 | 704 | struct machine *machine; |
a1645ce1 ZY |
705 | u16 misc; |
706 | struct dso *dso; | |
707 | enum dso_kernel_type dso_type; | |
708 | ||
23346f21 ACM |
709 | machine = perf_session__findnew_machine(session, bev->pid); |
710 | if (!machine) | |
a1645ce1 ZY |
711 | goto out; |
712 | ||
713 | misc = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
714 | ||
715 | switch (misc) { | |
716 | case PERF_RECORD_MISC_KERNEL: | |
717 | dso_type = DSO_TYPE_KERNEL; | |
23346f21 | 718 | head = &machine->kernel_dsos; |
a1645ce1 ZY |
719 | break; |
720 | case PERF_RECORD_MISC_GUEST_KERNEL: | |
721 | dso_type = DSO_TYPE_GUEST_KERNEL; | |
23346f21 | 722 | head = &machine->kernel_dsos; |
a1645ce1 ZY |
723 | break; |
724 | case PERF_RECORD_MISC_USER: | |
725 | case PERF_RECORD_MISC_GUEST_USER: | |
726 | dso_type = DSO_TYPE_USER; | |
23346f21 | 727 | head = &machine->user_dsos; |
a1645ce1 ZY |
728 | break; |
729 | default: | |
730 | goto out; | |
731 | } | |
732 | ||
733 | dso = __dsos__findnew(head, filename); | |
734 | if (dso != NULL) { | |
454c407e TZ |
735 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; |
736 | ||
a1645ce1 | 737 | dso__set_build_id(dso, &bev->build_id); |
454c407e TZ |
738 | |
739 | if (filename[0] == '[') | |
740 | dso->kernel = dso_type; | |
741 | ||
742 | build_id__sprintf(dso->build_id, sizeof(dso->build_id), | |
743 | sbuild_id); | |
744 | pr_debug("build id event received for %s: %s\n", | |
745 | dso->long_name, sbuild_id); | |
746 | } | |
a1645ce1 ZY |
747 | |
748 | err = 0; | |
749 | out: | |
750 | return err; | |
751 | } | |
752 | ||
753 | static int perf_header__read_build_ids(struct perf_header *self, | |
754 | int input, u64 offset, u64 size) | |
755 | { | |
756 | struct perf_session *session = container_of(self, | |
757 | struct perf_session, header); | |
758 | struct build_id_event bev; | |
759 | char filename[PATH_MAX]; | |
760 | u64 limit = offset + size; | |
761 | int err = -1; | |
762 | ||
763 | while (offset < limit) { | |
764 | ssize_t len; | |
765 | ||
766 | if (read(input, &bev, sizeof(bev)) != sizeof(bev)) | |
767 | goto out; | |
768 | ||
769 | if (self->needs_swap) | |
770 | perf_event_header__bswap(&bev.header); | |
771 | ||
772 | len = bev.header.size - sizeof(bev); | |
773 | if (read(input, filename, len) != len) | |
774 | goto out; | |
775 | ||
776 | __event_process_build_id(&bev, filename, session); | |
777 | ||
778 | offset += bev.header.size; | |
779 | } | |
780 | err = 0; | |
781 | out: | |
782 | return err; | |
783 | } | |
784 | ||
37562eac | 785 | static int perf_file_section__process(struct perf_file_section *self, |
ba21594c | 786 | struct perf_header *ph, |
37562eac ACM |
787 | int feat, int fd) |
788 | { | |
f887f301 | 789 | if (lseek(fd, self->offset, SEEK_SET) == (off_t)-1) { |
37562eac ACM |
790 | pr_debug("Failed to lseek to %Ld offset for feature %d, " |
791 | "continuing...\n", self->offset, feat); | |
792 | return 0; | |
793 | } | |
794 | ||
795 | switch (feat) { | |
796 | case HEADER_TRACE_INFO: | |
454c407e | 797 | trace_report(fd, false); |
37562eac ACM |
798 | break; |
799 | ||
800 | case HEADER_BUILD_ID: | |
ba21594c | 801 | if (perf_header__read_build_ids(ph, fd, self->offset, self->size)) |
37562eac ACM |
802 | pr_debug("Failed to read buildids, continuing...\n"); |
803 | break; | |
804 | default: | |
805 | pr_debug("unknown feature %d, continuing...\n", feat); | |
806 | } | |
807 | ||
808 | return 0; | |
809 | } | |
2ba08250 | 810 | |
8dc58101 | 811 | static int perf_file_header__read_pipe(struct perf_pipe_file_header *self, |
454c407e TZ |
812 | struct perf_header *ph, int fd, |
813 | bool repipe) | |
7c6a1c65 | 814 | { |
8dc58101 TZ |
815 | if (do_read(fd, self, sizeof(*self)) <= 0 || |
816 | memcmp(&self->magic, __perf_magic, sizeof(self->magic))) | |
817 | return -1; | |
818 | ||
454c407e TZ |
819 | if (repipe && do_write(STDOUT_FILENO, self, sizeof(*self)) < 0) |
820 | return -1; | |
821 | ||
8dc58101 TZ |
822 | if (self->size != sizeof(*self)) { |
823 | u64 size = bswap_64(self->size); | |
824 | ||
825 | if (size != sizeof(*self)) | |
826 | return -1; | |
827 | ||
828 | ph->needs_swap = true; | |
829 | } | |
830 | ||
831 | return 0; | |
832 | } | |
833 | ||
834 | static int perf_header__read_pipe(struct perf_session *session, int fd) | |
835 | { | |
836 | struct perf_header *self = &session->header; | |
837 | struct perf_pipe_file_header f_header; | |
838 | ||
454c407e TZ |
839 | if (perf_file_header__read_pipe(&f_header, self, fd, |
840 | session->repipe) < 0) { | |
8dc58101 TZ |
841 | pr_debug("incompatible file format\n"); |
842 | return -EINVAL; | |
843 | } | |
844 | ||
845 | session->fd = fd; | |
846 | ||
847 | return 0; | |
848 | } | |
849 | ||
850 | int perf_header__read(struct perf_session *session, int fd) | |
851 | { | |
852 | struct perf_header *self = &session->header; | |
ba21594c | 853 | struct perf_file_header f_header; |
7c6a1c65 PZ |
854 | struct perf_file_attr f_attr; |
855 | u64 f_id; | |
7c6a1c65 PZ |
856 | int nr_attrs, nr_ids, i, j; |
857 | ||
8dc58101 TZ |
858 | if (session->fd_pipe) |
859 | return perf_header__read_pipe(session, fd); | |
860 | ||
4dc0a04b ACM |
861 | if (perf_file_header__read(&f_header, self, fd) < 0) { |
862 | pr_debug("incompatible file format\n"); | |
863 | return -EINVAL; | |
864 | } | |
7c6a1c65 PZ |
865 | |
866 | nr_attrs = f_header.attrs.size / sizeof(f_attr); | |
867 | lseek(fd, f_header.attrs.offset, SEEK_SET); | |
868 | ||
869 | for (i = 0; i < nr_attrs; i++) { | |
870 | struct perf_header_attr *attr; | |
1c222bce | 871 | off_t tmp; |
7c6a1c65 | 872 | |
ba21594c | 873 | if (perf_header__getbuffer64(self, fd, &f_attr, sizeof(f_attr))) |
769885f3 | 874 | goto out_errno; |
ba21594c | 875 | |
1c222bce | 876 | tmp = lseek(fd, 0, SEEK_CUR); |
7c6a1c65 PZ |
877 | |
878 | attr = perf_header_attr__new(&f_attr.attr); | |
dc79c0fc | 879 | if (attr == NULL) |
4dc0a04b | 880 | return -ENOMEM; |
7c6a1c65 PZ |
881 | |
882 | nr_ids = f_attr.ids.size / sizeof(u64); | |
883 | lseek(fd, f_attr.ids.offset, SEEK_SET); | |
884 | ||
885 | for (j = 0; j < nr_ids; j++) { | |
ba21594c | 886 | if (perf_header__getbuffer64(self, fd, &f_id, sizeof(f_id))) |
769885f3 | 887 | goto out_errno; |
7c6a1c65 | 888 | |
4dc0a04b ACM |
889 | if (perf_header_attr__add_id(attr, f_id) < 0) { |
890 | perf_header_attr__delete(attr); | |
891 | return -ENOMEM; | |
892 | } | |
893 | } | |
894 | if (perf_header__add_attr(self, attr) < 0) { | |
895 | perf_header_attr__delete(attr); | |
896 | return -ENOMEM; | |
7c6a1c65 | 897 | } |
11deb1f9 | 898 | |
7c6a1c65 PZ |
899 | lseek(fd, tmp, SEEK_SET); |
900 | } | |
901 | ||
8755a8f2 AV |
902 | if (f_header.event_types.size) { |
903 | lseek(fd, f_header.event_types.offset, SEEK_SET); | |
904 | events = malloc(f_header.event_types.size); | |
4dc0a04b ACM |
905 | if (events == NULL) |
906 | return -ENOMEM; | |
ba21594c ACM |
907 | if (perf_header__getbuffer64(self, fd, events, |
908 | f_header.event_types.size)) | |
769885f3 | 909 | goto out_errno; |
8755a8f2 AV |
910 | event_count = f_header.event_types.size / sizeof(struct perf_trace_event_type); |
911 | } | |
03456a15 | 912 | |
37562eac | 913 | perf_header__process_sections(self, fd, perf_file_section__process); |
4778d2e4 | 914 | |
2e01d179 | 915 | lseek(fd, self->data_offset, SEEK_SET); |
7c6a1c65 PZ |
916 | |
917 | self->frozen = 1; | |
4dc0a04b | 918 | return 0; |
769885f3 ACM |
919 | out_errno: |
920 | return -errno; | |
7c6a1c65 | 921 | } |
0d3a5c88 FW |
922 | |
923 | u64 perf_header__sample_type(struct perf_header *header) | |
924 | { | |
925 | u64 type = 0; | |
926 | int i; | |
927 | ||
928 | for (i = 0; i < header->attrs; i++) { | |
929 | struct perf_header_attr *attr = header->attr[i]; | |
930 | ||
931 | if (!type) | |
932 | type = attr->attr.sample_type; | |
933 | else if (type != attr->attr.sample_type) | |
934 | die("non matching sample_type"); | |
935 | } | |
936 | ||
937 | return type; | |
938 | } | |
939 | ||
cdd6c482 | 940 | struct perf_event_attr * |
0d3a5c88 FW |
941 | perf_header__find_attr(u64 id, struct perf_header *header) |
942 | { | |
943 | int i; | |
944 | ||
02bf60aa AB |
945 | /* |
946 | * We set id to -1 if the data file doesn't contain sample | |
947 | * ids. Check for this and avoid walking through the entire | |
948 | * list of ids which may be large. | |
949 | */ | |
950 | if (id == -1ULL) | |
951 | return NULL; | |
952 | ||
0d3a5c88 FW |
953 | for (i = 0; i < header->attrs; i++) { |
954 | struct perf_header_attr *attr = header->attr[i]; | |
955 | int j; | |
956 | ||
957 | for (j = 0; j < attr->ids; j++) { | |
958 | if (attr->id[j] == id) | |
959 | return &attr->attr; | |
960 | } | |
961 | } | |
962 | ||
963 | return NULL; | |
964 | } | |
2c46dbb5 TZ |
965 | |
966 | int event__synthesize_attr(struct perf_event_attr *attr, u16 ids, u64 *id, | |
967 | event__handler_t process, | |
968 | struct perf_session *session) | |
969 | { | |
970 | event_t *ev; | |
971 | size_t size; | |
972 | int err; | |
973 | ||
974 | size = sizeof(struct perf_event_attr); | |
975 | size = ALIGN(size, sizeof(u64)); | |
976 | size += sizeof(struct perf_event_header); | |
977 | size += ids * sizeof(u64); | |
978 | ||
979 | ev = malloc(size); | |
980 | ||
981 | ev->attr.attr = *attr; | |
982 | memcpy(ev->attr.id, id, ids * sizeof(u64)); | |
983 | ||
984 | ev->attr.header.type = PERF_RECORD_HEADER_ATTR; | |
985 | ev->attr.header.size = size; | |
986 | ||
987 | err = process(ev, session); | |
988 | ||
989 | free(ev); | |
990 | ||
991 | return err; | |
992 | } | |
993 | ||
994 | int event__synthesize_attrs(struct perf_header *self, | |
995 | event__handler_t process, | |
996 | struct perf_session *session) | |
997 | { | |
998 | struct perf_header_attr *attr; | |
999 | int i, err = 0; | |
1000 | ||
1001 | for (i = 0; i < self->attrs; i++) { | |
1002 | attr = self->attr[i]; | |
1003 | ||
1004 | err = event__synthesize_attr(&attr->attr, attr->ids, attr->id, | |
1005 | process, session); | |
1006 | if (err) { | |
1007 | pr_debug("failed to create perf header attribute\n"); | |
1008 | return err; | |
1009 | } | |
1010 | } | |
1011 | ||
1012 | return err; | |
1013 | } | |
1014 | ||
1015 | int event__process_attr(event_t *self, struct perf_session *session) | |
1016 | { | |
1017 | struct perf_header_attr *attr; | |
1018 | unsigned int i, ids, n_ids; | |
1019 | ||
1020 | attr = perf_header_attr__new(&self->attr.attr); | |
1021 | if (attr == NULL) | |
1022 | return -ENOMEM; | |
1023 | ||
1024 | ids = self->header.size; | |
1025 | ids -= (void *)&self->attr.id - (void *)self; | |
1026 | n_ids = ids / sizeof(u64); | |
1027 | ||
1028 | for (i = 0; i < n_ids; i++) { | |
1029 | if (perf_header_attr__add_id(attr, self->attr.id[i]) < 0) { | |
1030 | perf_header_attr__delete(attr); | |
1031 | return -ENOMEM; | |
1032 | } | |
1033 | } | |
1034 | ||
1035 | if (perf_header__add_attr(&session->header, attr) < 0) { | |
1036 | perf_header_attr__delete(attr); | |
1037 | return -ENOMEM; | |
1038 | } | |
1039 | ||
1040 | perf_session__update_sample_type(session); | |
1041 | ||
1042 | return 0; | |
1043 | } | |
cd19a035 TZ |
1044 | |
1045 | int event__synthesize_event_type(u64 event_id, char *name, | |
1046 | event__handler_t process, | |
1047 | struct perf_session *session) | |
1048 | { | |
1049 | event_t ev; | |
1050 | size_t size = 0; | |
1051 | int err = 0; | |
1052 | ||
1053 | memset(&ev, 0, sizeof(ev)); | |
1054 | ||
1055 | ev.event_type.event_type.event_id = event_id; | |
1056 | memset(ev.event_type.event_type.name, 0, MAX_EVENT_NAME); | |
1057 | strncpy(ev.event_type.event_type.name, name, MAX_EVENT_NAME - 1); | |
1058 | ||
1059 | ev.event_type.header.type = PERF_RECORD_HEADER_EVENT_TYPE; | |
1060 | size = strlen(name); | |
1061 | size = ALIGN(size, sizeof(u64)); | |
1062 | ev.event_type.header.size = sizeof(ev.event_type) - | |
1063 | (sizeof(ev.event_type.event_type.name) - size); | |
1064 | ||
1065 | err = process(&ev, session); | |
1066 | ||
1067 | return err; | |
1068 | } | |
1069 | ||
1070 | int event__synthesize_event_types(event__handler_t process, | |
1071 | struct perf_session *session) | |
1072 | { | |
1073 | struct perf_trace_event_type *type; | |
1074 | int i, err = 0; | |
1075 | ||
1076 | for (i = 0; i < event_count; i++) { | |
1077 | type = &events[i]; | |
1078 | ||
1079 | err = event__synthesize_event_type(type->event_id, type->name, | |
1080 | process, session); | |
1081 | if (err) { | |
1082 | pr_debug("failed to create perf header event type\n"); | |
1083 | return err; | |
1084 | } | |
1085 | } | |
1086 | ||
1087 | return err; | |
1088 | } | |
1089 | ||
1090 | int event__process_event_type(event_t *self, | |
1091 | struct perf_session *session __unused) | |
1092 | { | |
1093 | if (perf_header__push_event(self->event_type.event_type.event_id, | |
1094 | self->event_type.event_type.name) < 0) | |
1095 | return -ENOMEM; | |
1096 | ||
1097 | return 0; | |
1098 | } | |
9215545e TZ |
1099 | |
1100 | int event__synthesize_tracing_data(int fd, struct perf_event_attr *pattrs, | |
1101 | int nb_events, | |
1102 | event__handler_t process, | |
1103 | struct perf_session *session __unused) | |
1104 | { | |
1105 | event_t ev; | |
1106 | ssize_t size = 0, aligned_size = 0, padding; | |
1107 | int err = 0; | |
1108 | ||
1109 | memset(&ev, 0, sizeof(ev)); | |
1110 | ||
1111 | ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA; | |
1112 | size = read_tracing_data_size(fd, pattrs, nb_events); | |
1113 | if (size <= 0) | |
1114 | return size; | |
1115 | aligned_size = ALIGN(size, sizeof(u64)); | |
1116 | padding = aligned_size - size; | |
1117 | ev.tracing_data.header.size = sizeof(ev.tracing_data); | |
1118 | ev.tracing_data.size = aligned_size; | |
1119 | ||
1120 | process(&ev, session); | |
1121 | ||
1122 | err = read_tracing_data(fd, pattrs, nb_events); | |
1123 | write_padded(fd, NULL, 0, padding); | |
1124 | ||
1125 | return aligned_size; | |
1126 | } | |
1127 | ||
1128 | int event__process_tracing_data(event_t *self, | |
1129 | struct perf_session *session) | |
1130 | { | |
1131 | ssize_t size_read, padding, size = self->tracing_data.size; | |
1132 | off_t offset = lseek(session->fd, 0, SEEK_CUR); | |
1133 | char buf[BUFSIZ]; | |
1134 | ||
1135 | /* setup for reading amidst mmap */ | |
1136 | lseek(session->fd, offset + sizeof(struct tracing_data_event), | |
1137 | SEEK_SET); | |
1138 | ||
454c407e | 1139 | size_read = trace_report(session->fd, session->repipe); |
9215545e TZ |
1140 | |
1141 | padding = ALIGN(size_read, sizeof(u64)) - size_read; | |
1142 | ||
1143 | if (read(session->fd, buf, padding) < 0) | |
1144 | die("reading input file"); | |
454c407e TZ |
1145 | if (session->repipe) { |
1146 | int retw = write(STDOUT_FILENO, buf, padding); | |
1147 | if (retw <= 0 || retw != padding) | |
1148 | die("repiping tracing data padding"); | |
1149 | } | |
9215545e TZ |
1150 | |
1151 | if (size_read + padding != size) | |
1152 | die("tracing data size mismatch"); | |
1153 | ||
1154 | return size_read + padding; | |
1155 | } | |
c7929e47 TZ |
1156 | |
1157 | int event__synthesize_build_id(struct dso *pos, u16 misc, | |
454c407e TZ |
1158 | event__handler_t process, |
1159 | struct machine *machine, | |
c7929e47 TZ |
1160 | struct perf_session *session) |
1161 | { | |
1162 | event_t ev; | |
1163 | size_t len; | |
1164 | int err = 0; | |
1165 | ||
1166 | if (!pos->hit) | |
1167 | return err; | |
1168 | ||
1169 | memset(&ev, 0, sizeof(ev)); | |
1170 | ||
1171 | len = pos->long_name_len + 1; | |
1172 | len = ALIGN(len, NAME_ALIGN); | |
1173 | memcpy(&ev.build_id.build_id, pos->build_id, sizeof(pos->build_id)); | |
1174 | ev.build_id.header.type = PERF_RECORD_HEADER_BUILD_ID; | |
1175 | ev.build_id.header.misc = misc; | |
23346f21 | 1176 | ev.build_id.pid = machine->pid; |
c7929e47 TZ |
1177 | ev.build_id.header.size = sizeof(ev.build_id) + len; |
1178 | memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len); | |
1179 | ||
1180 | err = process(&ev, session); | |
1181 | ||
1182 | return err; | |
1183 | } | |
1184 | ||
c7929e47 | 1185 | int event__process_build_id(event_t *self, |
a1645ce1 | 1186 | struct perf_session *session) |
c7929e47 | 1187 | { |
a1645ce1 ZY |
1188 | __event_process_build_id(&self->build_id, |
1189 | self->build_id.filename, | |
1190 | session); | |
c7929e47 TZ |
1191 | return 0; |
1192 | } |