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 | 18 | |
a1ac1d3c SE |
19 | static bool no_buildid_cache = false; |
20 | ||
7c6a1c65 | 21 | /* |
ec60a3fe | 22 | * Create new perf.data header attribute: |
7c6a1c65 | 23 | */ |
cdd6c482 | 24 | struct perf_header_attr *perf_header_attr__new(struct perf_event_attr *attr) |
7c6a1c65 PZ |
25 | { |
26 | struct perf_header_attr *self = malloc(sizeof(*self)); | |
27 | ||
dc79c0fc ACM |
28 | if (self != NULL) { |
29 | self->attr = *attr; | |
30 | self->ids = 0; | |
31 | self->size = 1; | |
32 | self->id = malloc(sizeof(u64)); | |
33 | if (self->id == NULL) { | |
34 | free(self); | |
35 | self = NULL; | |
36 | } | |
37 | } | |
7c6a1c65 PZ |
38 | |
39 | return self; | |
40 | } | |
41 | ||
11deb1f9 ACM |
42 | void perf_header_attr__delete(struct perf_header_attr *self) |
43 | { | |
44 | free(self->id); | |
45 | free(self); | |
46 | } | |
47 | ||
58754121 | 48 | int perf_header_attr__add_id(struct perf_header_attr *self, u64 id) |
7c6a1c65 PZ |
49 | { |
50 | int pos = self->ids; | |
51 | ||
52 | self->ids++; | |
53 | if (self->ids > self->size) { | |
58754121 ACM |
54 | int nsize = self->size * 2; |
55 | u64 *nid = realloc(self->id, nsize * sizeof(u64)); | |
56 | ||
57 | if (nid == NULL) | |
58 | return -1; | |
59 | ||
60 | self->size = nsize; | |
61 | self->id = nid; | |
7c6a1c65 PZ |
62 | } |
63 | self->id[pos] = id; | |
58754121 | 64 | return 0; |
7c6a1c65 PZ |
65 | } |
66 | ||
94c744b6 | 67 | int perf_header__init(struct perf_header *self) |
7c6a1c65 | 68 | { |
94c744b6 ACM |
69 | self->size = 1; |
70 | self->attr = malloc(sizeof(void *)); | |
71 | return self->attr == NULL ? -ENOMEM : 0; | |
7c6a1c65 PZ |
72 | } |
73 | ||
94c744b6 | 74 | void perf_header__exit(struct perf_header *self) |
4dc0a04b ACM |
75 | { |
76 | int i; | |
4dc0a04b | 77 | for (i = 0; i < self->attrs; ++i) |
94c744b6 | 78 | perf_header_attr__delete(self->attr[i]); |
4dc0a04b | 79 | free(self->attr); |
4dc0a04b ACM |
80 | } |
81 | ||
11deb1f9 ACM |
82 | int perf_header__add_attr(struct perf_header *self, |
83 | struct perf_header_attr *attr) | |
7c6a1c65 | 84 | { |
7c6a1c65 | 85 | if (self->frozen) |
11deb1f9 | 86 | return -1; |
7c6a1c65 | 87 | |
4dc0a04b | 88 | if (self->attrs == self->size) { |
11deb1f9 ACM |
89 | int nsize = self->size * 2; |
90 | struct perf_header_attr **nattr; | |
91 | ||
92 | nattr = realloc(self->attr, nsize * sizeof(void *)); | |
93 | if (nattr == NULL) | |
94 | return -1; | |
95 | ||
96 | self->size = nsize; | |
97 | self->attr = nattr; | |
7c6a1c65 | 98 | } |
4dc0a04b ACM |
99 | |
100 | self->attr[self->attrs++] = attr; | |
11deb1f9 | 101 | return 0; |
7c6a1c65 PZ |
102 | } |
103 | ||
8755a8f2 AV |
104 | static int event_count; |
105 | static struct perf_trace_event_type *events; | |
106 | ||
ae99fb2c | 107 | int perf_header__push_event(u64 id, const char *name) |
8755a8f2 | 108 | { |
ec60a3fe | 109 | if (strlen(name) > MAX_EVENT_NAME) |
6beba7ad | 110 | pr_warning("Event %s will be truncated\n", name); |
8755a8f2 AV |
111 | |
112 | if (!events) { | |
113 | events = malloc(sizeof(struct perf_trace_event_type)); | |
ae99fb2c ACM |
114 | if (events == NULL) |
115 | return -ENOMEM; | |
8755a8f2 | 116 | } else { |
ae99fb2c ACM |
117 | struct perf_trace_event_type *nevents; |
118 | ||
119 | nevents = realloc(events, (event_count + 1) * sizeof(*events)); | |
120 | if (nevents == NULL) | |
121 | return -ENOMEM; | |
122 | events = nevents; | |
8755a8f2 AV |
123 | } |
124 | memset(&events[event_count], 0, sizeof(struct perf_trace_event_type)); | |
125 | events[event_count].event_id = id; | |
ec60a3fe | 126 | strncpy(events[event_count].name, name, MAX_EVENT_NAME - 1); |
8755a8f2 | 127 | event_count++; |
ae99fb2c | 128 | return 0; |
8755a8f2 AV |
129 | } |
130 | ||
131 | char *perf_header__find_event(u64 id) | |
132 | { | |
133 | int i; | |
134 | for (i = 0 ; i < event_count; i++) { | |
135 | if (events[i].event_id == id) | |
136 | return events[i].name; | |
137 | } | |
138 | return NULL; | |
139 | } | |
140 | ||
7c6a1c65 PZ |
141 | static const char *__perf_magic = "PERFFILE"; |
142 | ||
143 | #define PERF_MAGIC (*(u64 *)__perf_magic) | |
144 | ||
7c6a1c65 | 145 | struct perf_file_attr { |
cdd6c482 | 146 | struct perf_event_attr attr; |
7c6a1c65 PZ |
147 | struct perf_file_section ids; |
148 | }; | |
149 | ||
8d06367f ACM |
150 | void perf_header__set_feat(struct perf_header *self, int feat) |
151 | { | |
152 | set_bit(feat, self->adds_features); | |
153 | } | |
154 | ||
155 | bool perf_header__has_feat(const struct perf_header *self, int feat) | |
156 | { | |
157 | return test_bit(feat, self->adds_features); | |
158 | } | |
159 | ||
3726cc75 | 160 | static int do_write(int fd, const void *buf, size_t size) |
7c6a1c65 PZ |
161 | { |
162 | while (size) { | |
163 | int ret = write(fd, buf, size); | |
164 | ||
165 | if (ret < 0) | |
d5eed904 | 166 | return -errno; |
7c6a1c65 PZ |
167 | |
168 | size -= ret; | |
169 | buf += ret; | |
170 | } | |
3726cc75 ACM |
171 | |
172 | return 0; | |
7c6a1c65 PZ |
173 | } |
174 | ||
f92cb24c ACM |
175 | #define NAME_ALIGN 64 |
176 | ||
177 | static int write_padded(int fd, const void *bf, size_t count, | |
178 | size_t count_aligned) | |
179 | { | |
180 | static const char zero_buf[NAME_ALIGN]; | |
181 | int err = do_write(fd, bf, count); | |
182 | ||
183 | if (!err) | |
184 | err = do_write(fd, zero_buf, count_aligned - count); | |
185 | ||
186 | return err; | |
187 | } | |
188 | ||
4cf40131 ACM |
189 | #define dsos__for_each_with_build_id(pos, head) \ |
190 | list_for_each_entry(pos, head, node) \ | |
191 | if (!pos->has_build_id) \ | |
192 | continue; \ | |
193 | else | |
194 | ||
a1645ce1 ZY |
195 | static int __dsos__write_buildid_table(struct list_head *head, pid_t pid, |
196 | u16 misc, int fd) | |
8671dab9 | 197 | { |
e30a3d12 ACM |
198 | struct dso *pos; |
199 | ||
4cf40131 | 200 | dsos__for_each_with_build_id(pos, head) { |
d5eed904 | 201 | int err; |
e30a3d12 | 202 | struct build_id_event b; |
6122e4e4 | 203 | size_t len; |
e30a3d12 | 204 | |
6122e4e4 ACM |
205 | if (!pos->hit) |
206 | continue; | |
207 | len = pos->long_name_len + 1; | |
7691b1ec | 208 | len = ALIGN(len, NAME_ALIGN); |
e30a3d12 ACM |
209 | memset(&b, 0, sizeof(b)); |
210 | memcpy(&b.build_id, pos->build_id, sizeof(pos->build_id)); | |
a1645ce1 | 211 | b.pid = pid; |
a89e5abe | 212 | b.header.misc = misc; |
e30a3d12 | 213 | b.header.size = sizeof(b) + len; |
d5eed904 ACM |
214 | err = do_write(fd, &b, sizeof(b)); |
215 | if (err < 0) | |
216 | return err; | |
f92cb24c ACM |
217 | err = write_padded(fd, pos->long_name, |
218 | pos->long_name_len + 1, len); | |
d5eed904 ACM |
219 | if (err < 0) |
220 | return err; | |
57f395a7 | 221 | } |
3726cc75 ACM |
222 | |
223 | return 0; | |
8671dab9 FW |
224 | } |
225 | ||
f869097e ACM |
226 | static int machine__write_buildid_table(struct machine *self, int fd) |
227 | { | |
228 | int err; | |
229 | u16 kmisc = PERF_RECORD_MISC_KERNEL, | |
230 | umisc = PERF_RECORD_MISC_USER; | |
231 | ||
232 | if (!machine__is_host(self)) { | |
233 | kmisc = PERF_RECORD_MISC_GUEST_KERNEL; | |
234 | umisc = PERF_RECORD_MISC_GUEST_USER; | |
235 | } | |
236 | ||
237 | err = __dsos__write_buildid_table(&self->kernel_dsos, self->pid, | |
238 | kmisc, fd); | |
239 | if (err == 0) | |
240 | err = __dsos__write_buildid_table(&self->user_dsos, | |
241 | self->pid, umisc, fd); | |
242 | return err; | |
243 | } | |
244 | ||
a1645ce1 | 245 | static int dsos__write_buildid_table(struct perf_header *header, int fd) |
b0da954a | 246 | { |
a1645ce1 ZY |
247 | struct perf_session *session = container_of(header, |
248 | struct perf_session, header); | |
249 | struct rb_node *nd; | |
f869097e ACM |
250 | int err = machine__write_buildid_table(&session->host_machine, fd); |
251 | ||
252 | if (err) | |
253 | return err; | |
a1645ce1 | 254 | |
23346f21 ACM |
255 | for (nd = rb_first(&session->machines); nd; nd = rb_next(nd)) { |
256 | struct machine *pos = rb_entry(nd, struct machine, rb_node); | |
f869097e | 257 | err = machine__write_buildid_table(pos, fd); |
a1645ce1 ZY |
258 | if (err) |
259 | break; | |
260 | } | |
b0da954a ACM |
261 | return err; |
262 | } | |
263 | ||
ef12a141 ACM |
264 | int build_id_cache__add_s(const char *sbuild_id, const char *debugdir, |
265 | const char *name, bool is_kallsyms) | |
4cf40131 ACM |
266 | { |
267 | const size_t size = PATH_MAX; | |
268 | char *filename = malloc(size), | |
ef12a141 | 269 | *linkname = malloc(size), *targetname; |
4cf40131 ACM |
270 | int len, err = -1; |
271 | ||
272 | if (filename == NULL || linkname == NULL) | |
273 | goto out_free; | |
274 | ||
9e201442 | 275 | len = snprintf(filename, size, "%s%s%s", |
ef12a141 | 276 | debugdir, is_kallsyms ? "/" : "", name); |
4cf40131 ACM |
277 | if (mkdir_p(filename, 0755)) |
278 | goto out_free; | |
279 | ||
ef12a141 | 280 | snprintf(filename + len, sizeof(filename) - len, "/%s", sbuild_id); |
4cf40131 | 281 | |
9e201442 ACM |
282 | if (access(filename, F_OK)) { |
283 | if (is_kallsyms) { | |
284 | if (copyfile("/proc/kallsyms", filename)) | |
285 | goto out_free; | |
ef12a141 | 286 | } else if (link(name, filename) && copyfile(name, filename)) |
9e201442 ACM |
287 | goto out_free; |
288 | } | |
4cf40131 ACM |
289 | |
290 | len = snprintf(linkname, size, "%s/.build-id/%.2s", | |
291 | debugdir, sbuild_id); | |
292 | ||
293 | if (access(linkname, X_OK) && mkdir_p(linkname, 0755)) | |
294 | goto out_free; | |
295 | ||
296 | snprintf(linkname + len, size - len, "/%s", sbuild_id + 2); | |
297 | targetname = filename + strlen(debugdir) - 5; | |
298 | memcpy(targetname, "../..", 5); | |
299 | ||
300 | if (symlink(targetname, linkname) == 0) | |
301 | err = 0; | |
302 | out_free: | |
303 | free(filename); | |
304 | free(linkname); | |
305 | return err; | |
306 | } | |
307 | ||
ef12a141 ACM |
308 | static int build_id_cache__add_b(const u8 *build_id, size_t build_id_size, |
309 | const char *name, const char *debugdir, | |
310 | bool is_kallsyms) | |
311 | { | |
312 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; | |
313 | ||
314 | build_id__sprintf(build_id, build_id_size, sbuild_id); | |
315 | ||
316 | return build_id_cache__add_s(sbuild_id, debugdir, name, is_kallsyms); | |
317 | } | |
318 | ||
319 | int build_id_cache__remove_s(const char *sbuild_id, const char *debugdir) | |
320 | { | |
321 | const size_t size = PATH_MAX; | |
322 | char *filename = malloc(size), | |
323 | *linkname = malloc(size); | |
324 | int err = -1; | |
325 | ||
326 | if (filename == NULL || linkname == NULL) | |
327 | goto out_free; | |
328 | ||
329 | snprintf(linkname, size, "%s/.build-id/%.2s/%s", | |
330 | debugdir, sbuild_id, sbuild_id + 2); | |
331 | ||
332 | if (access(linkname, F_OK)) | |
333 | goto out_free; | |
334 | ||
335 | if (readlink(linkname, filename, size) < 0) | |
336 | goto out_free; | |
337 | ||
338 | if (unlink(linkname)) | |
339 | goto out_free; | |
340 | ||
341 | /* | |
342 | * Since the link is relative, we must make it absolute: | |
343 | */ | |
344 | snprintf(linkname, size, "%s/.build-id/%.2s/%s", | |
345 | debugdir, sbuild_id, filename); | |
346 | ||
347 | if (unlink(linkname)) | |
348 | goto out_free; | |
349 | ||
350 | err = 0; | |
351 | out_free: | |
352 | free(filename); | |
353 | free(linkname); | |
354 | return err; | |
355 | } | |
356 | ||
357 | static int dso__cache_build_id(struct dso *self, const char *debugdir) | |
358 | { | |
359 | bool is_kallsyms = self->kernel && self->long_name[0] != '/'; | |
360 | ||
361 | return build_id_cache__add_b(self->build_id, sizeof(self->build_id), | |
362 | self->long_name, debugdir, is_kallsyms); | |
363 | } | |
364 | ||
4cf40131 ACM |
365 | static int __dsos__cache_build_ids(struct list_head *head, const char *debugdir) |
366 | { | |
367 | struct dso *pos; | |
368 | int err = 0; | |
369 | ||
370 | dsos__for_each_with_build_id(pos, head) | |
371 | if (dso__cache_build_id(pos, debugdir)) | |
372 | err = -1; | |
373 | ||
374 | return err; | |
375 | } | |
376 | ||
f869097e ACM |
377 | static int machine__cache_build_ids(struct machine *self, const char *debugdir) |
378 | { | |
379 | int ret = __dsos__cache_build_ids(&self->kernel_dsos, debugdir); | |
380 | ret |= __dsos__cache_build_ids(&self->user_dsos, debugdir); | |
381 | return ret; | |
382 | } | |
383 | ||
384 | static int perf_session__cache_build_ids(struct perf_session *self) | |
4cf40131 | 385 | { |
a1645ce1 | 386 | struct rb_node *nd; |
f869097e | 387 | int ret; |
4cf40131 ACM |
388 | char debugdir[PATH_MAX]; |
389 | ||
45de34bb | 390 | snprintf(debugdir, sizeof(debugdir), "%s", buildid_dir); |
4cf40131 ACM |
391 | |
392 | if (mkdir(debugdir, 0755) != 0 && errno != EEXIST) | |
393 | return -1; | |
394 | ||
f869097e ACM |
395 | ret = machine__cache_build_ids(&self->host_machine, debugdir); |
396 | ||
397 | for (nd = rb_first(&self->machines); nd; nd = rb_next(nd)) { | |
23346f21 | 398 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
f869097e | 399 | ret |= machine__cache_build_ids(pos, debugdir); |
a1645ce1 ZY |
400 | } |
401 | return ret ? -1 : 0; | |
402 | } | |
403 | ||
f869097e ACM |
404 | static bool machine__read_build_ids(struct machine *self, bool with_hits) |
405 | { | |
406 | bool ret = __dsos__read_build_ids(&self->kernel_dsos, with_hits); | |
407 | ret |= __dsos__read_build_ids(&self->user_dsos, with_hits); | |
408 | return ret; | |
409 | } | |
410 | ||
411 | static bool perf_session__read_build_ids(struct perf_session *self, bool with_hits) | |
a1645ce1 | 412 | { |
a1645ce1 | 413 | struct rb_node *nd; |
f869097e | 414 | bool ret = machine__read_build_ids(&self->host_machine, with_hits); |
a1645ce1 | 415 | |
f869097e | 416 | for (nd = rb_first(&self->machines); nd; nd = rb_next(nd)) { |
23346f21 | 417 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
f869097e | 418 | ret |= machine__read_build_ids(pos, with_hits); |
a1645ce1 ZY |
419 | } |
420 | ||
421 | return ret; | |
4cf40131 ACM |
422 | } |
423 | ||
d5eed904 | 424 | static int perf_header__adds_write(struct perf_header *self, int fd) |
2ba08250 | 425 | { |
9e827dd0 | 426 | int nr_sections; |
f869097e | 427 | struct perf_session *session; |
9e827dd0 FW |
428 | struct perf_file_section *feat_sec; |
429 | int sec_size; | |
430 | u64 sec_start; | |
d5eed904 | 431 | int idx = 0, err; |
9e827dd0 | 432 | |
f869097e ACM |
433 | session = container_of(self, struct perf_session, header); |
434 | if (perf_session__read_build_ids(session, true)) | |
9e827dd0 FW |
435 | perf_header__set_feat(self, HEADER_BUILD_ID); |
436 | ||
437 | nr_sections = bitmap_weight(self->adds_features, HEADER_FEAT_BITS); | |
438 | if (!nr_sections) | |
d5eed904 | 439 | return 0; |
9e827dd0 FW |
440 | |
441 | feat_sec = calloc(sizeof(*feat_sec), nr_sections); | |
d5eed904 ACM |
442 | if (feat_sec == NULL) |
443 | return -ENOMEM; | |
9e827dd0 FW |
444 | |
445 | sec_size = sizeof(*feat_sec) * nr_sections; | |
446 | ||
447 | sec_start = self->data_offset + self->data_size; | |
f887f301 | 448 | lseek(fd, sec_start + sec_size, SEEK_SET); |
2ba08250 | 449 | |
3e13ab2d | 450 | if (perf_header__has_feat(self, HEADER_TRACE_INFO)) { |
9e827dd0 FW |
451 | struct perf_file_section *trace_sec; |
452 | ||
453 | trace_sec = &feat_sec[idx++]; | |
454 | ||
2ba08250 | 455 | /* Write trace info */ |
f887f301 | 456 | trace_sec->offset = lseek(fd, 0, SEEK_CUR); |
2ba08250 | 457 | read_tracing_data(fd, attrs, nr_counters); |
f887f301 | 458 | trace_sec->size = lseek(fd, 0, SEEK_CUR) - trace_sec->offset; |
2ba08250 | 459 | } |
8671dab9 | 460 | |
9e827dd0 FW |
461 | if (perf_header__has_feat(self, HEADER_BUILD_ID)) { |
462 | struct perf_file_section *buildid_sec; | |
463 | ||
464 | buildid_sec = &feat_sec[idx++]; | |
465 | ||
466 | /* Write build-ids */ | |
f887f301 | 467 | buildid_sec->offset = lseek(fd, 0, SEEK_CUR); |
a1645ce1 | 468 | err = dsos__write_buildid_table(self, fd); |
d5eed904 ACM |
469 | if (err < 0) { |
470 | pr_debug("failed to write buildid table\n"); | |
471 | goto out_free; | |
472 | } | |
f887f301 XG |
473 | buildid_sec->size = lseek(fd, 0, SEEK_CUR) - |
474 | buildid_sec->offset; | |
a1ac1d3c SE |
475 | if (!no_buildid_cache) |
476 | perf_session__cache_build_ids(session); | |
8671dab9 | 477 | } |
9e827dd0 | 478 | |
f887f301 | 479 | lseek(fd, sec_start, SEEK_SET); |
d5eed904 ACM |
480 | err = do_write(fd, feat_sec, sec_size); |
481 | if (err < 0) | |
482 | pr_debug("failed to write feature section\n"); | |
483 | out_free: | |
9e827dd0 | 484 | free(feat_sec); |
d5eed904 | 485 | return err; |
9e827dd0 | 486 | } |
2ba08250 | 487 | |
8dc58101 TZ |
488 | int perf_header__write_pipe(int fd) |
489 | { | |
490 | struct perf_pipe_file_header f_header; | |
491 | int err; | |
492 | ||
493 | f_header = (struct perf_pipe_file_header){ | |
494 | .magic = PERF_MAGIC, | |
495 | .size = sizeof(f_header), | |
496 | }; | |
497 | ||
498 | err = do_write(fd, &f_header, sizeof(f_header)); | |
499 | if (err < 0) { | |
500 | pr_debug("failed to write perf pipe header\n"); | |
501 | return err; | |
502 | } | |
503 | ||
504 | return 0; | |
505 | } | |
506 | ||
d5eed904 | 507 | int perf_header__write(struct perf_header *self, int fd, bool at_exit) |
7c6a1c65 PZ |
508 | { |
509 | struct perf_file_header f_header; | |
510 | struct perf_file_attr f_attr; | |
511 | struct perf_header_attr *attr; | |
d5eed904 | 512 | int i, err; |
7c6a1c65 PZ |
513 | |
514 | lseek(fd, sizeof(f_header), SEEK_SET); | |
515 | ||
7c6a1c65 PZ |
516 | for (i = 0; i < self->attrs; i++) { |
517 | attr = self->attr[i]; | |
518 | ||
519 | attr->id_offset = lseek(fd, 0, SEEK_CUR); | |
d5eed904 ACM |
520 | err = do_write(fd, attr->id, attr->ids * sizeof(u64)); |
521 | if (err < 0) { | |
522 | pr_debug("failed to write perf header\n"); | |
523 | return err; | |
524 | } | |
7c6a1c65 PZ |
525 | } |
526 | ||
527 | ||
528 | self->attr_offset = lseek(fd, 0, SEEK_CUR); | |
529 | ||
530 | for (i = 0; i < self->attrs; i++) { | |
531 | attr = self->attr[i]; | |
532 | ||
533 | f_attr = (struct perf_file_attr){ | |
534 | .attr = attr->attr, | |
535 | .ids = { | |
536 | .offset = attr->id_offset, | |
537 | .size = attr->ids * sizeof(u64), | |
538 | } | |
539 | }; | |
d5eed904 ACM |
540 | err = do_write(fd, &f_attr, sizeof(f_attr)); |
541 | if (err < 0) { | |
542 | pr_debug("failed to write perf header attribute\n"); | |
543 | return err; | |
544 | } | |
7c6a1c65 PZ |
545 | } |
546 | ||
8755a8f2 AV |
547 | self->event_offset = lseek(fd, 0, SEEK_CUR); |
548 | self->event_size = event_count * sizeof(struct perf_trace_event_type); | |
d5eed904 ACM |
549 | if (events) { |
550 | err = do_write(fd, events, self->event_size); | |
551 | if (err < 0) { | |
552 | pr_debug("failed to write perf header events\n"); | |
553 | return err; | |
554 | } | |
555 | } | |
8755a8f2 | 556 | |
7c6a1c65 PZ |
557 | self->data_offset = lseek(fd, 0, SEEK_CUR); |
558 | ||
d5eed904 ACM |
559 | if (at_exit) { |
560 | err = perf_header__adds_write(self, fd); | |
561 | if (err < 0) | |
562 | return err; | |
563 | } | |
9e827dd0 | 564 | |
7c6a1c65 PZ |
565 | f_header = (struct perf_file_header){ |
566 | .magic = PERF_MAGIC, | |
567 | .size = sizeof(f_header), | |
568 | .attr_size = sizeof(f_attr), | |
569 | .attrs = { | |
570 | .offset = self->attr_offset, | |
571 | .size = self->attrs * sizeof(f_attr), | |
572 | }, | |
573 | .data = { | |
574 | .offset = self->data_offset, | |
575 | .size = self->data_size, | |
576 | }, | |
8755a8f2 AV |
577 | .event_types = { |
578 | .offset = self->event_offset, | |
579 | .size = self->event_size, | |
580 | }, | |
7c6a1c65 PZ |
581 | }; |
582 | ||
db9f11e3 | 583 | memcpy(&f_header.adds_features, &self->adds_features, sizeof(self->adds_features)); |
2ba08250 | 584 | |
7c6a1c65 | 585 | lseek(fd, 0, SEEK_SET); |
d5eed904 ACM |
586 | err = do_write(fd, &f_header, sizeof(f_header)); |
587 | if (err < 0) { | |
588 | pr_debug("failed to write perf header\n"); | |
589 | return err; | |
590 | } | |
f887f301 | 591 | lseek(fd, self->data_offset + self->data_size, SEEK_SET); |
7c6a1c65 PZ |
592 | |
593 | self->frozen = 1; | |
d5eed904 | 594 | return 0; |
7c6a1c65 PZ |
595 | } |
596 | ||
ba21594c ACM |
597 | static int perf_header__getbuffer64(struct perf_header *self, |
598 | int fd, void *buf, size_t size) | |
599 | { | |
8dc58101 | 600 | if (do_read(fd, buf, size) <= 0) |
ba21594c ACM |
601 | return -1; |
602 | ||
603 | if (self->needs_swap) | |
604 | mem_bswap_64(buf, size); | |
605 | ||
606 | return 0; | |
607 | } | |
608 | ||
37562eac ACM |
609 | int perf_header__process_sections(struct perf_header *self, int fd, |
610 | int (*process)(struct perf_file_section *self, | |
ba21594c | 611 | struct perf_header *ph, |
37562eac | 612 | int feat, int fd)) |
2ba08250 | 613 | { |
9e827dd0 FW |
614 | struct perf_file_section *feat_sec; |
615 | int nr_sections; | |
616 | int sec_size; | |
617 | int idx = 0; | |
769885f3 | 618 | int err = -1, feat = 1; |
9e827dd0 FW |
619 | |
620 | nr_sections = bitmap_weight(self->adds_features, HEADER_FEAT_BITS); | |
621 | if (!nr_sections) | |
37562eac | 622 | return 0; |
9e827dd0 FW |
623 | |
624 | feat_sec = calloc(sizeof(*feat_sec), nr_sections); | |
625 | if (!feat_sec) | |
37562eac | 626 | return -1; |
9e827dd0 FW |
627 | |
628 | sec_size = sizeof(*feat_sec) * nr_sections; | |
629 | ||
f887f301 | 630 | lseek(fd, self->data_offset + self->data_size, SEEK_SET); |
9e827dd0 | 631 | |
ba21594c | 632 | if (perf_header__getbuffer64(self, fd, feat_sec, sec_size)) |
769885f3 | 633 | goto out_free; |
9e827dd0 | 634 | |
769885f3 | 635 | err = 0; |
37562eac ACM |
636 | while (idx < nr_sections && feat < HEADER_LAST_FEATURE) { |
637 | if (perf_header__has_feat(self, feat)) { | |
638 | struct perf_file_section *sec = &feat_sec[idx++]; | |
2ba08250 | 639 | |
ba21594c | 640 | err = process(sec, self, feat, fd); |
37562eac ACM |
641 | if (err < 0) |
642 | break; | |
643 | } | |
644 | ++feat; | |
2ba08250 | 645 | } |
769885f3 | 646 | out_free: |
37562eac ACM |
647 | free(feat_sec); |
648 | return err; | |
769885f3 | 649 | } |
4778d2e4 | 650 | |
37562eac ACM |
651 | int perf_file_header__read(struct perf_file_header *self, |
652 | struct perf_header *ph, int fd) | |
653 | { | |
654 | lseek(fd, 0, SEEK_SET); | |
37562eac | 655 | |
8dc58101 | 656 | if (do_read(fd, self, sizeof(*self)) <= 0 || |
ba21594c | 657 | memcmp(&self->magic, __perf_magic, sizeof(self->magic))) |
37562eac ACM |
658 | return -1; |
659 | ||
ba21594c ACM |
660 | if (self->attr_size != sizeof(struct perf_file_attr)) { |
661 | u64 attr_size = bswap_64(self->attr_size); | |
662 | ||
663 | if (attr_size != sizeof(struct perf_file_attr)) | |
664 | return -1; | |
665 | ||
666 | mem_bswap_64(self, offsetof(struct perf_file_header, | |
667 | adds_features)); | |
668 | ph->needs_swap = true; | |
669 | } | |
670 | ||
37562eac ACM |
671 | if (self->size != sizeof(*self)) { |
672 | /* Support the previous format */ | |
673 | if (self->size == offsetof(typeof(*self), adds_features)) | |
674 | bitmap_zero(self->adds_features, HEADER_FEAT_BITS); | |
675 | else | |
676 | return -1; | |
4778d2e4 | 677 | } |
9e827dd0 | 678 | |
37562eac | 679 | memcpy(&ph->adds_features, &self->adds_features, |
ba21594c ACM |
680 | sizeof(ph->adds_features)); |
681 | /* | |
682 | * FIXME: hack that assumes that if we need swap the perf.data file | |
683 | * may be coming from an arch with a different word-size, ergo different | |
684 | * DEFINE_BITMAP format, investigate more later, but for now its mostly | |
685 | * safe to assume that we have a build-id section. Trace files probably | |
686 | * have several other issues in this realm anyway... | |
687 | */ | |
688 | if (ph->needs_swap) { | |
689 | memset(&ph->adds_features, 0, sizeof(ph->adds_features)); | |
690 | perf_header__set_feat(ph, HEADER_BUILD_ID); | |
691 | } | |
37562eac ACM |
692 | |
693 | ph->event_offset = self->event_types.offset; | |
ba21594c ACM |
694 | ph->event_size = self->event_types.size; |
695 | ph->data_offset = self->data.offset; | |
37562eac ACM |
696 | ph->data_size = self->data.size; |
697 | return 0; | |
698 | } | |
699 | ||
a1645ce1 ZY |
700 | static int __event_process_build_id(struct build_id_event *bev, |
701 | char *filename, | |
702 | struct perf_session *session) | |
703 | { | |
704 | int err = -1; | |
705 | struct list_head *head; | |
23346f21 | 706 | struct machine *machine; |
a1645ce1 ZY |
707 | u16 misc; |
708 | struct dso *dso; | |
709 | enum dso_kernel_type dso_type; | |
710 | ||
23346f21 ACM |
711 | machine = perf_session__findnew_machine(session, bev->pid); |
712 | if (!machine) | |
a1645ce1 ZY |
713 | goto out; |
714 | ||
715 | misc = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
716 | ||
717 | switch (misc) { | |
718 | case PERF_RECORD_MISC_KERNEL: | |
719 | dso_type = DSO_TYPE_KERNEL; | |
23346f21 | 720 | head = &machine->kernel_dsos; |
a1645ce1 ZY |
721 | break; |
722 | case PERF_RECORD_MISC_GUEST_KERNEL: | |
723 | dso_type = DSO_TYPE_GUEST_KERNEL; | |
23346f21 | 724 | head = &machine->kernel_dsos; |
a1645ce1 ZY |
725 | break; |
726 | case PERF_RECORD_MISC_USER: | |
727 | case PERF_RECORD_MISC_GUEST_USER: | |
728 | dso_type = DSO_TYPE_USER; | |
23346f21 | 729 | head = &machine->user_dsos; |
a1645ce1 ZY |
730 | break; |
731 | default: | |
732 | goto out; | |
733 | } | |
734 | ||
735 | dso = __dsos__findnew(head, filename); | |
736 | if (dso != NULL) { | |
454c407e TZ |
737 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; |
738 | ||
a1645ce1 | 739 | dso__set_build_id(dso, &bev->build_id); |
454c407e TZ |
740 | |
741 | if (filename[0] == '[') | |
742 | dso->kernel = dso_type; | |
743 | ||
744 | build_id__sprintf(dso->build_id, sizeof(dso->build_id), | |
745 | sbuild_id); | |
746 | pr_debug("build id event received for %s: %s\n", | |
747 | dso->long_name, sbuild_id); | |
748 | } | |
a1645ce1 ZY |
749 | |
750 | err = 0; | |
751 | out: | |
752 | return err; | |
753 | } | |
754 | ||
755 | static int perf_header__read_build_ids(struct perf_header *self, | |
756 | int input, u64 offset, u64 size) | |
757 | { | |
758 | struct perf_session *session = container_of(self, | |
759 | struct perf_session, header); | |
760 | struct build_id_event bev; | |
761 | char filename[PATH_MAX]; | |
762 | u64 limit = offset + size; | |
763 | int err = -1; | |
764 | ||
765 | while (offset < limit) { | |
766 | ssize_t len; | |
767 | ||
768 | if (read(input, &bev, sizeof(bev)) != sizeof(bev)) | |
769 | goto out; | |
770 | ||
771 | if (self->needs_swap) | |
772 | perf_event_header__bswap(&bev.header); | |
773 | ||
774 | len = bev.header.size - sizeof(bev); | |
775 | if (read(input, filename, len) != len) | |
776 | goto out; | |
777 | ||
778 | __event_process_build_id(&bev, filename, session); | |
779 | ||
780 | offset += bev.header.size; | |
781 | } | |
782 | err = 0; | |
783 | out: | |
784 | return err; | |
785 | } | |
786 | ||
37562eac | 787 | static int perf_file_section__process(struct perf_file_section *self, |
ba21594c | 788 | struct perf_header *ph, |
37562eac ACM |
789 | int feat, int fd) |
790 | { | |
f887f301 | 791 | if (lseek(fd, self->offset, SEEK_SET) == (off_t)-1) { |
37562eac ACM |
792 | pr_debug("Failed to lseek to %Ld offset for feature %d, " |
793 | "continuing...\n", self->offset, feat); | |
794 | return 0; | |
795 | } | |
796 | ||
797 | switch (feat) { | |
798 | case HEADER_TRACE_INFO: | |
454c407e | 799 | trace_report(fd, false); |
37562eac ACM |
800 | break; |
801 | ||
802 | case HEADER_BUILD_ID: | |
ba21594c | 803 | if (perf_header__read_build_ids(ph, fd, self->offset, self->size)) |
37562eac ACM |
804 | pr_debug("Failed to read buildids, continuing...\n"); |
805 | break; | |
806 | default: | |
807 | pr_debug("unknown feature %d, continuing...\n", feat); | |
808 | } | |
809 | ||
810 | return 0; | |
811 | } | |
2ba08250 | 812 | |
8dc58101 | 813 | static int perf_file_header__read_pipe(struct perf_pipe_file_header *self, |
454c407e TZ |
814 | struct perf_header *ph, int fd, |
815 | bool repipe) | |
7c6a1c65 | 816 | { |
8dc58101 TZ |
817 | if (do_read(fd, self, sizeof(*self)) <= 0 || |
818 | memcmp(&self->magic, __perf_magic, sizeof(self->magic))) | |
819 | return -1; | |
820 | ||
454c407e TZ |
821 | if (repipe && do_write(STDOUT_FILENO, self, sizeof(*self)) < 0) |
822 | return -1; | |
823 | ||
8dc58101 TZ |
824 | if (self->size != sizeof(*self)) { |
825 | u64 size = bswap_64(self->size); | |
826 | ||
827 | if (size != sizeof(*self)) | |
828 | return -1; | |
829 | ||
830 | ph->needs_swap = true; | |
831 | } | |
832 | ||
833 | return 0; | |
834 | } | |
835 | ||
836 | static int perf_header__read_pipe(struct perf_session *session, int fd) | |
837 | { | |
838 | struct perf_header *self = &session->header; | |
839 | struct perf_pipe_file_header f_header; | |
840 | ||
454c407e TZ |
841 | if (perf_file_header__read_pipe(&f_header, self, fd, |
842 | session->repipe) < 0) { | |
8dc58101 TZ |
843 | pr_debug("incompatible file format\n"); |
844 | return -EINVAL; | |
845 | } | |
846 | ||
847 | session->fd = fd; | |
848 | ||
849 | return 0; | |
850 | } | |
851 | ||
852 | int perf_header__read(struct perf_session *session, int fd) | |
853 | { | |
854 | struct perf_header *self = &session->header; | |
ba21594c | 855 | struct perf_file_header f_header; |
7c6a1c65 PZ |
856 | struct perf_file_attr f_attr; |
857 | u64 f_id; | |
7c6a1c65 PZ |
858 | int nr_attrs, nr_ids, i, j; |
859 | ||
8dc58101 TZ |
860 | if (session->fd_pipe) |
861 | return perf_header__read_pipe(session, fd); | |
862 | ||
4dc0a04b ACM |
863 | if (perf_file_header__read(&f_header, self, fd) < 0) { |
864 | pr_debug("incompatible file format\n"); | |
865 | return -EINVAL; | |
866 | } | |
7c6a1c65 PZ |
867 | |
868 | nr_attrs = f_header.attrs.size / sizeof(f_attr); | |
869 | lseek(fd, f_header.attrs.offset, SEEK_SET); | |
870 | ||
871 | for (i = 0; i < nr_attrs; i++) { | |
872 | struct perf_header_attr *attr; | |
1c222bce | 873 | off_t tmp; |
7c6a1c65 | 874 | |
ba21594c | 875 | if (perf_header__getbuffer64(self, fd, &f_attr, sizeof(f_attr))) |
769885f3 | 876 | goto out_errno; |
ba21594c | 877 | |
1c222bce | 878 | tmp = lseek(fd, 0, SEEK_CUR); |
7c6a1c65 PZ |
879 | |
880 | attr = perf_header_attr__new(&f_attr.attr); | |
dc79c0fc | 881 | if (attr == NULL) |
4dc0a04b | 882 | return -ENOMEM; |
7c6a1c65 PZ |
883 | |
884 | nr_ids = f_attr.ids.size / sizeof(u64); | |
885 | lseek(fd, f_attr.ids.offset, SEEK_SET); | |
886 | ||
887 | for (j = 0; j < nr_ids; j++) { | |
ba21594c | 888 | if (perf_header__getbuffer64(self, fd, &f_id, sizeof(f_id))) |
769885f3 | 889 | goto out_errno; |
7c6a1c65 | 890 | |
4dc0a04b ACM |
891 | if (perf_header_attr__add_id(attr, f_id) < 0) { |
892 | perf_header_attr__delete(attr); | |
893 | return -ENOMEM; | |
894 | } | |
895 | } | |
896 | if (perf_header__add_attr(self, attr) < 0) { | |
897 | perf_header_attr__delete(attr); | |
898 | return -ENOMEM; | |
7c6a1c65 | 899 | } |
11deb1f9 | 900 | |
7c6a1c65 PZ |
901 | lseek(fd, tmp, SEEK_SET); |
902 | } | |
903 | ||
8755a8f2 AV |
904 | if (f_header.event_types.size) { |
905 | lseek(fd, f_header.event_types.offset, SEEK_SET); | |
906 | events = malloc(f_header.event_types.size); | |
4dc0a04b ACM |
907 | if (events == NULL) |
908 | return -ENOMEM; | |
ba21594c ACM |
909 | if (perf_header__getbuffer64(self, fd, events, |
910 | f_header.event_types.size)) | |
769885f3 | 911 | goto out_errno; |
8755a8f2 AV |
912 | event_count = f_header.event_types.size / sizeof(struct perf_trace_event_type); |
913 | } | |
03456a15 | 914 | |
37562eac | 915 | perf_header__process_sections(self, fd, perf_file_section__process); |
4778d2e4 | 916 | |
2e01d179 | 917 | lseek(fd, self->data_offset, SEEK_SET); |
7c6a1c65 PZ |
918 | |
919 | self->frozen = 1; | |
4dc0a04b | 920 | return 0; |
769885f3 ACM |
921 | out_errno: |
922 | return -errno; | |
7c6a1c65 | 923 | } |
0d3a5c88 FW |
924 | |
925 | u64 perf_header__sample_type(struct perf_header *header) | |
926 | { | |
927 | u64 type = 0; | |
928 | int i; | |
929 | ||
930 | for (i = 0; i < header->attrs; i++) { | |
931 | struct perf_header_attr *attr = header->attr[i]; | |
932 | ||
933 | if (!type) | |
934 | type = attr->attr.sample_type; | |
935 | else if (type != attr->attr.sample_type) | |
936 | die("non matching sample_type"); | |
937 | } | |
938 | ||
939 | return type; | |
940 | } | |
941 | ||
cdd6c482 | 942 | struct perf_event_attr * |
0d3a5c88 FW |
943 | perf_header__find_attr(u64 id, struct perf_header *header) |
944 | { | |
945 | int i; | |
946 | ||
02bf60aa AB |
947 | /* |
948 | * We set id to -1 if the data file doesn't contain sample | |
60e67737 FBH |
949 | * ids. This can happen when the data file contains one type |
950 | * of event and in that case, the header can still store the | |
951 | * event attribute information. Check for this and avoid | |
952 | * walking through the entire list of ids which may be large. | |
02bf60aa | 953 | */ |
60e67737 FBH |
954 | if (id == -1ULL) { |
955 | if (header->attrs > 0) | |
956 | return &header->attr[0]->attr; | |
02bf60aa | 957 | return NULL; |
60e67737 | 958 | } |
02bf60aa | 959 | |
0d3a5c88 FW |
960 | for (i = 0; i < header->attrs; i++) { |
961 | struct perf_header_attr *attr = header->attr[i]; | |
962 | int j; | |
963 | ||
964 | for (j = 0; j < attr->ids; j++) { | |
965 | if (attr->id[j] == id) | |
966 | return &attr->attr; | |
967 | } | |
968 | } | |
969 | ||
970 | return NULL; | |
971 | } | |
2c46dbb5 TZ |
972 | |
973 | int event__synthesize_attr(struct perf_event_attr *attr, u16 ids, u64 *id, | |
974 | event__handler_t process, | |
975 | struct perf_session *session) | |
976 | { | |
977 | event_t *ev; | |
978 | size_t size; | |
979 | int err; | |
980 | ||
981 | size = sizeof(struct perf_event_attr); | |
982 | size = ALIGN(size, sizeof(u64)); | |
983 | size += sizeof(struct perf_event_header); | |
984 | size += ids * sizeof(u64); | |
985 | ||
986 | ev = malloc(size); | |
987 | ||
988 | ev->attr.attr = *attr; | |
989 | memcpy(ev->attr.id, id, ids * sizeof(u64)); | |
990 | ||
991 | ev->attr.header.type = PERF_RECORD_HEADER_ATTR; | |
992 | ev->attr.header.size = size; | |
993 | ||
994 | err = process(ev, session); | |
995 | ||
996 | free(ev); | |
997 | ||
998 | return err; | |
999 | } | |
1000 | ||
1001 | int event__synthesize_attrs(struct perf_header *self, | |
1002 | event__handler_t process, | |
1003 | struct perf_session *session) | |
1004 | { | |
1005 | struct perf_header_attr *attr; | |
1006 | int i, err = 0; | |
1007 | ||
1008 | for (i = 0; i < self->attrs; i++) { | |
1009 | attr = self->attr[i]; | |
1010 | ||
1011 | err = event__synthesize_attr(&attr->attr, attr->ids, attr->id, | |
1012 | process, session); | |
1013 | if (err) { | |
1014 | pr_debug("failed to create perf header attribute\n"); | |
1015 | return err; | |
1016 | } | |
1017 | } | |
1018 | ||
1019 | return err; | |
1020 | } | |
1021 | ||
1022 | int event__process_attr(event_t *self, struct perf_session *session) | |
1023 | { | |
1024 | struct perf_header_attr *attr; | |
1025 | unsigned int i, ids, n_ids; | |
1026 | ||
1027 | attr = perf_header_attr__new(&self->attr.attr); | |
1028 | if (attr == NULL) | |
1029 | return -ENOMEM; | |
1030 | ||
1031 | ids = self->header.size; | |
1032 | ids -= (void *)&self->attr.id - (void *)self; | |
1033 | n_ids = ids / sizeof(u64); | |
1034 | ||
1035 | for (i = 0; i < n_ids; i++) { | |
1036 | if (perf_header_attr__add_id(attr, self->attr.id[i]) < 0) { | |
1037 | perf_header_attr__delete(attr); | |
1038 | return -ENOMEM; | |
1039 | } | |
1040 | } | |
1041 | ||
1042 | if (perf_header__add_attr(&session->header, attr) < 0) { | |
1043 | perf_header_attr__delete(attr); | |
1044 | return -ENOMEM; | |
1045 | } | |
1046 | ||
1047 | perf_session__update_sample_type(session); | |
1048 | ||
1049 | return 0; | |
1050 | } | |
cd19a035 TZ |
1051 | |
1052 | int event__synthesize_event_type(u64 event_id, char *name, | |
1053 | event__handler_t process, | |
1054 | struct perf_session *session) | |
1055 | { | |
1056 | event_t ev; | |
1057 | size_t size = 0; | |
1058 | int err = 0; | |
1059 | ||
1060 | memset(&ev, 0, sizeof(ev)); | |
1061 | ||
1062 | ev.event_type.event_type.event_id = event_id; | |
1063 | memset(ev.event_type.event_type.name, 0, MAX_EVENT_NAME); | |
1064 | strncpy(ev.event_type.event_type.name, name, MAX_EVENT_NAME - 1); | |
1065 | ||
1066 | ev.event_type.header.type = PERF_RECORD_HEADER_EVENT_TYPE; | |
1067 | size = strlen(name); | |
1068 | size = ALIGN(size, sizeof(u64)); | |
1069 | ev.event_type.header.size = sizeof(ev.event_type) - | |
1070 | (sizeof(ev.event_type.event_type.name) - size); | |
1071 | ||
1072 | err = process(&ev, session); | |
1073 | ||
1074 | return err; | |
1075 | } | |
1076 | ||
1077 | int event__synthesize_event_types(event__handler_t process, | |
1078 | struct perf_session *session) | |
1079 | { | |
1080 | struct perf_trace_event_type *type; | |
1081 | int i, err = 0; | |
1082 | ||
1083 | for (i = 0; i < event_count; i++) { | |
1084 | type = &events[i]; | |
1085 | ||
1086 | err = event__synthesize_event_type(type->event_id, type->name, | |
1087 | process, session); | |
1088 | if (err) { | |
1089 | pr_debug("failed to create perf header event type\n"); | |
1090 | return err; | |
1091 | } | |
1092 | } | |
1093 | ||
1094 | return err; | |
1095 | } | |
1096 | ||
1097 | int event__process_event_type(event_t *self, | |
1098 | struct perf_session *session __unused) | |
1099 | { | |
1100 | if (perf_header__push_event(self->event_type.event_type.event_id, | |
1101 | self->event_type.event_type.name) < 0) | |
1102 | return -ENOMEM; | |
1103 | ||
1104 | return 0; | |
1105 | } | |
9215545e TZ |
1106 | |
1107 | int event__synthesize_tracing_data(int fd, struct perf_event_attr *pattrs, | |
1108 | int nb_events, | |
1109 | event__handler_t process, | |
1110 | struct perf_session *session __unused) | |
1111 | { | |
1112 | event_t ev; | |
1113 | ssize_t size = 0, aligned_size = 0, padding; | |
1114 | int err = 0; | |
1115 | ||
1116 | memset(&ev, 0, sizeof(ev)); | |
1117 | ||
1118 | ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA; | |
1119 | size = read_tracing_data_size(fd, pattrs, nb_events); | |
1120 | if (size <= 0) | |
1121 | return size; | |
1122 | aligned_size = ALIGN(size, sizeof(u64)); | |
1123 | padding = aligned_size - size; | |
1124 | ev.tracing_data.header.size = sizeof(ev.tracing_data); | |
1125 | ev.tracing_data.size = aligned_size; | |
1126 | ||
1127 | process(&ev, session); | |
1128 | ||
1129 | err = read_tracing_data(fd, pattrs, nb_events); | |
1130 | write_padded(fd, NULL, 0, padding); | |
1131 | ||
1132 | return aligned_size; | |
1133 | } | |
1134 | ||
1135 | int event__process_tracing_data(event_t *self, | |
1136 | struct perf_session *session) | |
1137 | { | |
1138 | ssize_t size_read, padding, size = self->tracing_data.size; | |
1139 | off_t offset = lseek(session->fd, 0, SEEK_CUR); | |
1140 | char buf[BUFSIZ]; | |
1141 | ||
1142 | /* setup for reading amidst mmap */ | |
1143 | lseek(session->fd, offset + sizeof(struct tracing_data_event), | |
1144 | SEEK_SET); | |
1145 | ||
454c407e | 1146 | size_read = trace_report(session->fd, session->repipe); |
9215545e TZ |
1147 | |
1148 | padding = ALIGN(size_read, sizeof(u64)) - size_read; | |
1149 | ||
1150 | if (read(session->fd, buf, padding) < 0) | |
1151 | die("reading input file"); | |
454c407e TZ |
1152 | if (session->repipe) { |
1153 | int retw = write(STDOUT_FILENO, buf, padding); | |
1154 | if (retw <= 0 || retw != padding) | |
1155 | die("repiping tracing data padding"); | |
1156 | } | |
9215545e TZ |
1157 | |
1158 | if (size_read + padding != size) | |
1159 | die("tracing data size mismatch"); | |
1160 | ||
1161 | return size_read + padding; | |
1162 | } | |
c7929e47 TZ |
1163 | |
1164 | int event__synthesize_build_id(struct dso *pos, u16 misc, | |
454c407e TZ |
1165 | event__handler_t process, |
1166 | struct machine *machine, | |
c7929e47 TZ |
1167 | struct perf_session *session) |
1168 | { | |
1169 | event_t ev; | |
1170 | size_t len; | |
1171 | int err = 0; | |
1172 | ||
1173 | if (!pos->hit) | |
1174 | return err; | |
1175 | ||
1176 | memset(&ev, 0, sizeof(ev)); | |
1177 | ||
1178 | len = pos->long_name_len + 1; | |
1179 | len = ALIGN(len, NAME_ALIGN); | |
1180 | memcpy(&ev.build_id.build_id, pos->build_id, sizeof(pos->build_id)); | |
1181 | ev.build_id.header.type = PERF_RECORD_HEADER_BUILD_ID; | |
1182 | ev.build_id.header.misc = misc; | |
23346f21 | 1183 | ev.build_id.pid = machine->pid; |
c7929e47 TZ |
1184 | ev.build_id.header.size = sizeof(ev.build_id) + len; |
1185 | memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len); | |
1186 | ||
1187 | err = process(&ev, session); | |
1188 | ||
1189 | return err; | |
1190 | } | |
1191 | ||
c7929e47 | 1192 | int event__process_build_id(event_t *self, |
a1645ce1 | 1193 | struct perf_session *session) |
c7929e47 | 1194 | { |
a1645ce1 ZY |
1195 | __event_process_build_id(&self->build_id, |
1196 | self->build_id.filename, | |
1197 | session); | |
c7929e47 TZ |
1198 | return 0; |
1199 | } | |
a1ac1d3c SE |
1200 | |
1201 | void disable_buildid_cache(void) | |
1202 | { | |
1203 | no_buildid_cache = true; | |
1204 | } |