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 | ||
baa2f6ce ACM |
155 | void perf_header__clear_feat(struct perf_header *self, int feat) |
156 | { | |
157 | clear_bit(feat, self->adds_features); | |
158 | } | |
159 | ||
8d06367f ACM |
160 | bool perf_header__has_feat(const struct perf_header *self, int feat) |
161 | { | |
162 | return test_bit(feat, self->adds_features); | |
163 | } | |
164 | ||
3726cc75 | 165 | static int do_write(int fd, const void *buf, size_t size) |
7c6a1c65 PZ |
166 | { |
167 | while (size) { | |
168 | int ret = write(fd, buf, size); | |
169 | ||
170 | if (ret < 0) | |
d5eed904 | 171 | return -errno; |
7c6a1c65 PZ |
172 | |
173 | size -= ret; | |
174 | buf += ret; | |
175 | } | |
3726cc75 ACM |
176 | |
177 | return 0; | |
7c6a1c65 PZ |
178 | } |
179 | ||
f92cb24c ACM |
180 | #define NAME_ALIGN 64 |
181 | ||
182 | static int write_padded(int fd, const void *bf, size_t count, | |
183 | size_t count_aligned) | |
184 | { | |
185 | static const char zero_buf[NAME_ALIGN]; | |
186 | int err = do_write(fd, bf, count); | |
187 | ||
188 | if (!err) | |
189 | err = do_write(fd, zero_buf, count_aligned - count); | |
190 | ||
191 | return err; | |
192 | } | |
193 | ||
4cf40131 ACM |
194 | #define dsos__for_each_with_build_id(pos, head) \ |
195 | list_for_each_entry(pos, head, node) \ | |
196 | if (!pos->has_build_id) \ | |
197 | continue; \ | |
198 | else | |
199 | ||
a1645ce1 ZY |
200 | static int __dsos__write_buildid_table(struct list_head *head, pid_t pid, |
201 | u16 misc, int fd) | |
8671dab9 | 202 | { |
e30a3d12 ACM |
203 | struct dso *pos; |
204 | ||
4cf40131 | 205 | dsos__for_each_with_build_id(pos, head) { |
d5eed904 | 206 | int err; |
e30a3d12 | 207 | struct build_id_event b; |
6122e4e4 | 208 | size_t len; |
e30a3d12 | 209 | |
6122e4e4 ACM |
210 | if (!pos->hit) |
211 | continue; | |
212 | len = pos->long_name_len + 1; | |
7691b1ec | 213 | len = ALIGN(len, NAME_ALIGN); |
e30a3d12 ACM |
214 | memset(&b, 0, sizeof(b)); |
215 | memcpy(&b.build_id, pos->build_id, sizeof(pos->build_id)); | |
a1645ce1 | 216 | b.pid = pid; |
a89e5abe | 217 | b.header.misc = misc; |
e30a3d12 | 218 | b.header.size = sizeof(b) + len; |
d5eed904 ACM |
219 | err = do_write(fd, &b, sizeof(b)); |
220 | if (err < 0) | |
221 | return err; | |
f92cb24c ACM |
222 | err = write_padded(fd, pos->long_name, |
223 | pos->long_name_len + 1, len); | |
d5eed904 ACM |
224 | if (err < 0) |
225 | return err; | |
57f395a7 | 226 | } |
3726cc75 ACM |
227 | |
228 | return 0; | |
8671dab9 FW |
229 | } |
230 | ||
f869097e ACM |
231 | static int machine__write_buildid_table(struct machine *self, int fd) |
232 | { | |
233 | int err; | |
234 | u16 kmisc = PERF_RECORD_MISC_KERNEL, | |
235 | umisc = PERF_RECORD_MISC_USER; | |
236 | ||
237 | if (!machine__is_host(self)) { | |
238 | kmisc = PERF_RECORD_MISC_GUEST_KERNEL; | |
239 | umisc = PERF_RECORD_MISC_GUEST_USER; | |
240 | } | |
241 | ||
242 | err = __dsos__write_buildid_table(&self->kernel_dsos, self->pid, | |
243 | kmisc, fd); | |
244 | if (err == 0) | |
245 | err = __dsos__write_buildid_table(&self->user_dsos, | |
246 | self->pid, umisc, fd); | |
247 | return err; | |
248 | } | |
249 | ||
a1645ce1 | 250 | static int dsos__write_buildid_table(struct perf_header *header, int fd) |
b0da954a | 251 | { |
a1645ce1 ZY |
252 | struct perf_session *session = container_of(header, |
253 | struct perf_session, header); | |
254 | struct rb_node *nd; | |
f869097e ACM |
255 | int err = machine__write_buildid_table(&session->host_machine, fd); |
256 | ||
257 | if (err) | |
258 | return err; | |
a1645ce1 | 259 | |
23346f21 ACM |
260 | for (nd = rb_first(&session->machines); nd; nd = rb_next(nd)) { |
261 | struct machine *pos = rb_entry(nd, struct machine, rb_node); | |
f869097e | 262 | err = machine__write_buildid_table(pos, fd); |
a1645ce1 ZY |
263 | if (err) |
264 | break; | |
265 | } | |
b0da954a ACM |
266 | return err; |
267 | } | |
268 | ||
ef12a141 ACM |
269 | int build_id_cache__add_s(const char *sbuild_id, const char *debugdir, |
270 | const char *name, bool is_kallsyms) | |
4cf40131 ACM |
271 | { |
272 | const size_t size = PATH_MAX; | |
273 | char *filename = malloc(size), | |
ef12a141 | 274 | *linkname = malloc(size), *targetname; |
4cf40131 ACM |
275 | int len, err = -1; |
276 | ||
277 | if (filename == NULL || linkname == NULL) | |
278 | goto out_free; | |
279 | ||
9e201442 | 280 | len = snprintf(filename, size, "%s%s%s", |
ef12a141 | 281 | debugdir, is_kallsyms ? "/" : "", name); |
4cf40131 ACM |
282 | if (mkdir_p(filename, 0755)) |
283 | goto out_free; | |
284 | ||
ef12a141 | 285 | snprintf(filename + len, sizeof(filename) - len, "/%s", sbuild_id); |
4cf40131 | 286 | |
9e201442 ACM |
287 | if (access(filename, F_OK)) { |
288 | if (is_kallsyms) { | |
289 | if (copyfile("/proc/kallsyms", filename)) | |
290 | goto out_free; | |
ef12a141 | 291 | } else if (link(name, filename) && copyfile(name, filename)) |
9e201442 ACM |
292 | goto out_free; |
293 | } | |
4cf40131 ACM |
294 | |
295 | len = snprintf(linkname, size, "%s/.build-id/%.2s", | |
296 | debugdir, sbuild_id); | |
297 | ||
298 | if (access(linkname, X_OK) && mkdir_p(linkname, 0755)) | |
299 | goto out_free; | |
300 | ||
301 | snprintf(linkname + len, size - len, "/%s", sbuild_id + 2); | |
302 | targetname = filename + strlen(debugdir) - 5; | |
303 | memcpy(targetname, "../..", 5); | |
304 | ||
305 | if (symlink(targetname, linkname) == 0) | |
306 | err = 0; | |
307 | out_free: | |
308 | free(filename); | |
309 | free(linkname); | |
310 | return err; | |
311 | } | |
312 | ||
ef12a141 ACM |
313 | static int build_id_cache__add_b(const u8 *build_id, size_t build_id_size, |
314 | const char *name, const char *debugdir, | |
315 | bool is_kallsyms) | |
316 | { | |
317 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; | |
318 | ||
319 | build_id__sprintf(build_id, build_id_size, sbuild_id); | |
320 | ||
321 | return build_id_cache__add_s(sbuild_id, debugdir, name, is_kallsyms); | |
322 | } | |
323 | ||
324 | int build_id_cache__remove_s(const char *sbuild_id, const char *debugdir) | |
325 | { | |
326 | const size_t size = PATH_MAX; | |
327 | char *filename = malloc(size), | |
328 | *linkname = malloc(size); | |
329 | int err = -1; | |
330 | ||
331 | if (filename == NULL || linkname == NULL) | |
332 | goto out_free; | |
333 | ||
334 | snprintf(linkname, size, "%s/.build-id/%.2s/%s", | |
335 | debugdir, sbuild_id, sbuild_id + 2); | |
336 | ||
337 | if (access(linkname, F_OK)) | |
338 | goto out_free; | |
339 | ||
340 | if (readlink(linkname, filename, size) < 0) | |
341 | goto out_free; | |
342 | ||
343 | if (unlink(linkname)) | |
344 | goto out_free; | |
345 | ||
346 | /* | |
347 | * Since the link is relative, we must make it absolute: | |
348 | */ | |
349 | snprintf(linkname, size, "%s/.build-id/%.2s/%s", | |
350 | debugdir, sbuild_id, filename); | |
351 | ||
352 | if (unlink(linkname)) | |
353 | goto out_free; | |
354 | ||
355 | err = 0; | |
356 | out_free: | |
357 | free(filename); | |
358 | free(linkname); | |
359 | return err; | |
360 | } | |
361 | ||
362 | static int dso__cache_build_id(struct dso *self, const char *debugdir) | |
363 | { | |
364 | bool is_kallsyms = self->kernel && self->long_name[0] != '/'; | |
365 | ||
366 | return build_id_cache__add_b(self->build_id, sizeof(self->build_id), | |
367 | self->long_name, debugdir, is_kallsyms); | |
368 | } | |
369 | ||
4cf40131 ACM |
370 | static int __dsos__cache_build_ids(struct list_head *head, const char *debugdir) |
371 | { | |
372 | struct dso *pos; | |
373 | int err = 0; | |
374 | ||
375 | dsos__for_each_with_build_id(pos, head) | |
376 | if (dso__cache_build_id(pos, debugdir)) | |
377 | err = -1; | |
378 | ||
379 | return err; | |
380 | } | |
381 | ||
f869097e ACM |
382 | static int machine__cache_build_ids(struct machine *self, const char *debugdir) |
383 | { | |
384 | int ret = __dsos__cache_build_ids(&self->kernel_dsos, debugdir); | |
385 | ret |= __dsos__cache_build_ids(&self->user_dsos, debugdir); | |
386 | return ret; | |
387 | } | |
388 | ||
389 | static int perf_session__cache_build_ids(struct perf_session *self) | |
4cf40131 | 390 | { |
a1645ce1 | 391 | struct rb_node *nd; |
f869097e | 392 | int ret; |
4cf40131 ACM |
393 | char debugdir[PATH_MAX]; |
394 | ||
45de34bb | 395 | snprintf(debugdir, sizeof(debugdir), "%s", buildid_dir); |
4cf40131 ACM |
396 | |
397 | if (mkdir(debugdir, 0755) != 0 && errno != EEXIST) | |
398 | return -1; | |
399 | ||
f869097e ACM |
400 | ret = machine__cache_build_ids(&self->host_machine, debugdir); |
401 | ||
402 | for (nd = rb_first(&self->machines); nd; nd = rb_next(nd)) { | |
23346f21 | 403 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
f869097e | 404 | ret |= machine__cache_build_ids(pos, debugdir); |
a1645ce1 ZY |
405 | } |
406 | return ret ? -1 : 0; | |
407 | } | |
408 | ||
f869097e ACM |
409 | static bool machine__read_build_ids(struct machine *self, bool with_hits) |
410 | { | |
411 | bool ret = __dsos__read_build_ids(&self->kernel_dsos, with_hits); | |
412 | ret |= __dsos__read_build_ids(&self->user_dsos, with_hits); | |
413 | return ret; | |
414 | } | |
415 | ||
416 | static bool perf_session__read_build_ids(struct perf_session *self, bool with_hits) | |
a1645ce1 | 417 | { |
a1645ce1 | 418 | struct rb_node *nd; |
f869097e | 419 | bool ret = machine__read_build_ids(&self->host_machine, with_hits); |
a1645ce1 | 420 | |
f869097e | 421 | for (nd = rb_first(&self->machines); nd; nd = rb_next(nd)) { |
23346f21 | 422 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
f869097e | 423 | ret |= machine__read_build_ids(pos, with_hits); |
a1645ce1 ZY |
424 | } |
425 | ||
426 | return ret; | |
4cf40131 ACM |
427 | } |
428 | ||
d5eed904 | 429 | static int perf_header__adds_write(struct perf_header *self, int fd) |
2ba08250 | 430 | { |
9e827dd0 | 431 | int nr_sections; |
f869097e | 432 | struct perf_session *session; |
9e827dd0 FW |
433 | struct perf_file_section *feat_sec; |
434 | int sec_size; | |
435 | u64 sec_start; | |
d5eed904 | 436 | int idx = 0, err; |
9e827dd0 | 437 | |
f869097e | 438 | session = container_of(self, struct perf_session, header); |
baa2f6ce ACM |
439 | |
440 | if (perf_header__has_feat(self, HEADER_BUILD_ID && | |
441 | !perf_session__read_build_ids(session, true))) | |
442 | perf_header__clear_feat(self, HEADER_BUILD_ID); | |
9e827dd0 FW |
443 | |
444 | nr_sections = bitmap_weight(self->adds_features, HEADER_FEAT_BITS); | |
445 | if (!nr_sections) | |
d5eed904 | 446 | return 0; |
9e827dd0 FW |
447 | |
448 | feat_sec = calloc(sizeof(*feat_sec), nr_sections); | |
d5eed904 ACM |
449 | if (feat_sec == NULL) |
450 | return -ENOMEM; | |
9e827dd0 FW |
451 | |
452 | sec_size = sizeof(*feat_sec) * nr_sections; | |
453 | ||
454 | sec_start = self->data_offset + self->data_size; | |
f887f301 | 455 | lseek(fd, sec_start + sec_size, SEEK_SET); |
2ba08250 | 456 | |
3e13ab2d | 457 | if (perf_header__has_feat(self, HEADER_TRACE_INFO)) { |
9e827dd0 FW |
458 | struct perf_file_section *trace_sec; |
459 | ||
460 | trace_sec = &feat_sec[idx++]; | |
461 | ||
2ba08250 | 462 | /* Write trace info */ |
f887f301 | 463 | trace_sec->offset = lseek(fd, 0, SEEK_CUR); |
69aad6f1 | 464 | read_tracing_data(fd, &evsel_list); |
f887f301 | 465 | trace_sec->size = lseek(fd, 0, SEEK_CUR) - trace_sec->offset; |
2ba08250 | 466 | } |
8671dab9 | 467 | |
9e827dd0 FW |
468 | if (perf_header__has_feat(self, HEADER_BUILD_ID)) { |
469 | struct perf_file_section *buildid_sec; | |
470 | ||
471 | buildid_sec = &feat_sec[idx++]; | |
472 | ||
473 | /* Write build-ids */ | |
f887f301 | 474 | buildid_sec->offset = lseek(fd, 0, SEEK_CUR); |
a1645ce1 | 475 | err = dsos__write_buildid_table(self, fd); |
d5eed904 ACM |
476 | if (err < 0) { |
477 | pr_debug("failed to write buildid table\n"); | |
478 | goto out_free; | |
479 | } | |
f887f301 XG |
480 | buildid_sec->size = lseek(fd, 0, SEEK_CUR) - |
481 | buildid_sec->offset; | |
a1ac1d3c SE |
482 | if (!no_buildid_cache) |
483 | perf_session__cache_build_ids(session); | |
8671dab9 | 484 | } |
9e827dd0 | 485 | |
f887f301 | 486 | lseek(fd, sec_start, SEEK_SET); |
d5eed904 ACM |
487 | err = do_write(fd, feat_sec, sec_size); |
488 | if (err < 0) | |
489 | pr_debug("failed to write feature section\n"); | |
490 | out_free: | |
9e827dd0 | 491 | free(feat_sec); |
d5eed904 | 492 | return err; |
9e827dd0 | 493 | } |
2ba08250 | 494 | |
8dc58101 TZ |
495 | int perf_header__write_pipe(int fd) |
496 | { | |
497 | struct perf_pipe_file_header f_header; | |
498 | int err; | |
499 | ||
500 | f_header = (struct perf_pipe_file_header){ | |
501 | .magic = PERF_MAGIC, | |
502 | .size = sizeof(f_header), | |
503 | }; | |
504 | ||
505 | err = do_write(fd, &f_header, sizeof(f_header)); | |
506 | if (err < 0) { | |
507 | pr_debug("failed to write perf pipe header\n"); | |
508 | return err; | |
509 | } | |
510 | ||
511 | return 0; | |
512 | } | |
513 | ||
d5eed904 | 514 | int perf_header__write(struct perf_header *self, int fd, bool at_exit) |
7c6a1c65 PZ |
515 | { |
516 | struct perf_file_header f_header; | |
517 | struct perf_file_attr f_attr; | |
518 | struct perf_header_attr *attr; | |
d5eed904 | 519 | int i, err; |
7c6a1c65 PZ |
520 | |
521 | lseek(fd, sizeof(f_header), SEEK_SET); | |
522 | ||
7c6a1c65 PZ |
523 | for (i = 0; i < self->attrs; i++) { |
524 | attr = self->attr[i]; | |
525 | ||
526 | attr->id_offset = lseek(fd, 0, SEEK_CUR); | |
d5eed904 ACM |
527 | err = do_write(fd, attr->id, attr->ids * sizeof(u64)); |
528 | if (err < 0) { | |
529 | pr_debug("failed to write perf header\n"); | |
530 | return err; | |
531 | } | |
7c6a1c65 PZ |
532 | } |
533 | ||
534 | ||
535 | self->attr_offset = lseek(fd, 0, SEEK_CUR); | |
536 | ||
537 | for (i = 0; i < self->attrs; i++) { | |
538 | attr = self->attr[i]; | |
539 | ||
540 | f_attr = (struct perf_file_attr){ | |
541 | .attr = attr->attr, | |
542 | .ids = { | |
543 | .offset = attr->id_offset, | |
544 | .size = attr->ids * sizeof(u64), | |
545 | } | |
546 | }; | |
d5eed904 ACM |
547 | err = do_write(fd, &f_attr, sizeof(f_attr)); |
548 | if (err < 0) { | |
549 | pr_debug("failed to write perf header attribute\n"); | |
550 | return err; | |
551 | } | |
7c6a1c65 PZ |
552 | } |
553 | ||
8755a8f2 AV |
554 | self->event_offset = lseek(fd, 0, SEEK_CUR); |
555 | self->event_size = event_count * sizeof(struct perf_trace_event_type); | |
d5eed904 ACM |
556 | if (events) { |
557 | err = do_write(fd, events, self->event_size); | |
558 | if (err < 0) { | |
559 | pr_debug("failed to write perf header events\n"); | |
560 | return err; | |
561 | } | |
562 | } | |
8755a8f2 | 563 | |
7c6a1c65 PZ |
564 | self->data_offset = lseek(fd, 0, SEEK_CUR); |
565 | ||
d5eed904 ACM |
566 | if (at_exit) { |
567 | err = perf_header__adds_write(self, fd); | |
568 | if (err < 0) | |
569 | return err; | |
570 | } | |
9e827dd0 | 571 | |
7c6a1c65 PZ |
572 | f_header = (struct perf_file_header){ |
573 | .magic = PERF_MAGIC, | |
574 | .size = sizeof(f_header), | |
575 | .attr_size = sizeof(f_attr), | |
576 | .attrs = { | |
577 | .offset = self->attr_offset, | |
578 | .size = self->attrs * sizeof(f_attr), | |
579 | }, | |
580 | .data = { | |
581 | .offset = self->data_offset, | |
582 | .size = self->data_size, | |
583 | }, | |
8755a8f2 AV |
584 | .event_types = { |
585 | .offset = self->event_offset, | |
586 | .size = self->event_size, | |
587 | }, | |
7c6a1c65 PZ |
588 | }; |
589 | ||
db9f11e3 | 590 | memcpy(&f_header.adds_features, &self->adds_features, sizeof(self->adds_features)); |
2ba08250 | 591 | |
7c6a1c65 | 592 | lseek(fd, 0, SEEK_SET); |
d5eed904 ACM |
593 | err = do_write(fd, &f_header, sizeof(f_header)); |
594 | if (err < 0) { | |
595 | pr_debug("failed to write perf header\n"); | |
596 | return err; | |
597 | } | |
f887f301 | 598 | lseek(fd, self->data_offset + self->data_size, SEEK_SET); |
7c6a1c65 PZ |
599 | |
600 | self->frozen = 1; | |
d5eed904 | 601 | return 0; |
7c6a1c65 PZ |
602 | } |
603 | ||
ba21594c ACM |
604 | static int perf_header__getbuffer64(struct perf_header *self, |
605 | int fd, void *buf, size_t size) | |
606 | { | |
8dc58101 | 607 | if (do_read(fd, buf, size) <= 0) |
ba21594c ACM |
608 | return -1; |
609 | ||
610 | if (self->needs_swap) | |
611 | mem_bswap_64(buf, size); | |
612 | ||
613 | return 0; | |
614 | } | |
615 | ||
37562eac ACM |
616 | int perf_header__process_sections(struct perf_header *self, int fd, |
617 | int (*process)(struct perf_file_section *self, | |
ba21594c | 618 | struct perf_header *ph, |
37562eac | 619 | int feat, int fd)) |
2ba08250 | 620 | { |
9e827dd0 FW |
621 | struct perf_file_section *feat_sec; |
622 | int nr_sections; | |
623 | int sec_size; | |
624 | int idx = 0; | |
769885f3 | 625 | int err = -1, feat = 1; |
9e827dd0 FW |
626 | |
627 | nr_sections = bitmap_weight(self->adds_features, HEADER_FEAT_BITS); | |
628 | if (!nr_sections) | |
37562eac | 629 | return 0; |
9e827dd0 FW |
630 | |
631 | feat_sec = calloc(sizeof(*feat_sec), nr_sections); | |
632 | if (!feat_sec) | |
37562eac | 633 | return -1; |
9e827dd0 FW |
634 | |
635 | sec_size = sizeof(*feat_sec) * nr_sections; | |
636 | ||
f887f301 | 637 | lseek(fd, self->data_offset + self->data_size, SEEK_SET); |
9e827dd0 | 638 | |
ba21594c | 639 | if (perf_header__getbuffer64(self, fd, feat_sec, sec_size)) |
769885f3 | 640 | goto out_free; |
9e827dd0 | 641 | |
769885f3 | 642 | err = 0; |
37562eac ACM |
643 | while (idx < nr_sections && feat < HEADER_LAST_FEATURE) { |
644 | if (perf_header__has_feat(self, feat)) { | |
645 | struct perf_file_section *sec = &feat_sec[idx++]; | |
2ba08250 | 646 | |
ba21594c | 647 | err = process(sec, self, feat, fd); |
37562eac ACM |
648 | if (err < 0) |
649 | break; | |
650 | } | |
651 | ++feat; | |
2ba08250 | 652 | } |
769885f3 | 653 | out_free: |
37562eac ACM |
654 | free(feat_sec); |
655 | return err; | |
769885f3 | 656 | } |
4778d2e4 | 657 | |
37562eac ACM |
658 | int perf_file_header__read(struct perf_file_header *self, |
659 | struct perf_header *ph, int fd) | |
660 | { | |
661 | lseek(fd, 0, SEEK_SET); | |
37562eac | 662 | |
8dc58101 | 663 | if (do_read(fd, self, sizeof(*self)) <= 0 || |
ba21594c | 664 | memcmp(&self->magic, __perf_magic, sizeof(self->magic))) |
37562eac ACM |
665 | return -1; |
666 | ||
ba21594c ACM |
667 | if (self->attr_size != sizeof(struct perf_file_attr)) { |
668 | u64 attr_size = bswap_64(self->attr_size); | |
669 | ||
670 | if (attr_size != sizeof(struct perf_file_attr)) | |
671 | return -1; | |
672 | ||
673 | mem_bswap_64(self, offsetof(struct perf_file_header, | |
674 | adds_features)); | |
675 | ph->needs_swap = true; | |
676 | } | |
677 | ||
37562eac ACM |
678 | if (self->size != sizeof(*self)) { |
679 | /* Support the previous format */ | |
680 | if (self->size == offsetof(typeof(*self), adds_features)) | |
681 | bitmap_zero(self->adds_features, HEADER_FEAT_BITS); | |
682 | else | |
683 | return -1; | |
4778d2e4 | 684 | } |
9e827dd0 | 685 | |
37562eac | 686 | memcpy(&ph->adds_features, &self->adds_features, |
ba21594c ACM |
687 | sizeof(ph->adds_features)); |
688 | /* | |
689 | * FIXME: hack that assumes that if we need swap the perf.data file | |
690 | * may be coming from an arch with a different word-size, ergo different | |
691 | * DEFINE_BITMAP format, investigate more later, but for now its mostly | |
692 | * safe to assume that we have a build-id section. Trace files probably | |
693 | * have several other issues in this realm anyway... | |
694 | */ | |
695 | if (ph->needs_swap) { | |
696 | memset(&ph->adds_features, 0, sizeof(ph->adds_features)); | |
697 | perf_header__set_feat(ph, HEADER_BUILD_ID); | |
698 | } | |
37562eac ACM |
699 | |
700 | ph->event_offset = self->event_types.offset; | |
ba21594c ACM |
701 | ph->event_size = self->event_types.size; |
702 | ph->data_offset = self->data.offset; | |
37562eac ACM |
703 | ph->data_size = self->data.size; |
704 | return 0; | |
705 | } | |
706 | ||
a1645ce1 ZY |
707 | static int __event_process_build_id(struct build_id_event *bev, |
708 | char *filename, | |
709 | struct perf_session *session) | |
710 | { | |
711 | int err = -1; | |
712 | struct list_head *head; | |
23346f21 | 713 | struct machine *machine; |
a1645ce1 ZY |
714 | u16 misc; |
715 | struct dso *dso; | |
716 | enum dso_kernel_type dso_type; | |
717 | ||
23346f21 ACM |
718 | machine = perf_session__findnew_machine(session, bev->pid); |
719 | if (!machine) | |
a1645ce1 ZY |
720 | goto out; |
721 | ||
722 | misc = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
723 | ||
724 | switch (misc) { | |
725 | case PERF_RECORD_MISC_KERNEL: | |
726 | dso_type = DSO_TYPE_KERNEL; | |
23346f21 | 727 | head = &machine->kernel_dsos; |
a1645ce1 ZY |
728 | break; |
729 | case PERF_RECORD_MISC_GUEST_KERNEL: | |
730 | dso_type = DSO_TYPE_GUEST_KERNEL; | |
23346f21 | 731 | head = &machine->kernel_dsos; |
a1645ce1 ZY |
732 | break; |
733 | case PERF_RECORD_MISC_USER: | |
734 | case PERF_RECORD_MISC_GUEST_USER: | |
735 | dso_type = DSO_TYPE_USER; | |
23346f21 | 736 | head = &machine->user_dsos; |
a1645ce1 ZY |
737 | break; |
738 | default: | |
739 | goto out; | |
740 | } | |
741 | ||
742 | dso = __dsos__findnew(head, filename); | |
743 | if (dso != NULL) { | |
454c407e TZ |
744 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; |
745 | ||
a1645ce1 | 746 | dso__set_build_id(dso, &bev->build_id); |
454c407e TZ |
747 | |
748 | if (filename[0] == '[') | |
749 | dso->kernel = dso_type; | |
750 | ||
751 | build_id__sprintf(dso->build_id, sizeof(dso->build_id), | |
752 | sbuild_id); | |
753 | pr_debug("build id event received for %s: %s\n", | |
754 | dso->long_name, sbuild_id); | |
755 | } | |
a1645ce1 ZY |
756 | |
757 | err = 0; | |
758 | out: | |
759 | return err; | |
760 | } | |
761 | ||
762 | static int perf_header__read_build_ids(struct perf_header *self, | |
763 | int input, u64 offset, u64 size) | |
764 | { | |
765 | struct perf_session *session = container_of(self, | |
766 | struct perf_session, header); | |
767 | struct build_id_event bev; | |
768 | char filename[PATH_MAX]; | |
769 | u64 limit = offset + size; | |
770 | int err = -1; | |
771 | ||
772 | while (offset < limit) { | |
773 | ssize_t len; | |
774 | ||
775 | if (read(input, &bev, sizeof(bev)) != sizeof(bev)) | |
776 | goto out; | |
777 | ||
778 | if (self->needs_swap) | |
779 | perf_event_header__bswap(&bev.header); | |
780 | ||
781 | len = bev.header.size - sizeof(bev); | |
782 | if (read(input, filename, len) != len) | |
783 | goto out; | |
784 | ||
785 | __event_process_build_id(&bev, filename, session); | |
786 | ||
787 | offset += bev.header.size; | |
788 | } | |
789 | err = 0; | |
790 | out: | |
791 | return err; | |
792 | } | |
793 | ||
37562eac | 794 | static int perf_file_section__process(struct perf_file_section *self, |
ba21594c | 795 | struct perf_header *ph, |
37562eac ACM |
796 | int feat, int fd) |
797 | { | |
f887f301 | 798 | if (lseek(fd, self->offset, SEEK_SET) == (off_t)-1) { |
37562eac ACM |
799 | pr_debug("Failed to lseek to %Ld offset for feature %d, " |
800 | "continuing...\n", self->offset, feat); | |
801 | return 0; | |
802 | } | |
803 | ||
804 | switch (feat) { | |
805 | case HEADER_TRACE_INFO: | |
454c407e | 806 | trace_report(fd, false); |
37562eac ACM |
807 | break; |
808 | ||
809 | case HEADER_BUILD_ID: | |
ba21594c | 810 | if (perf_header__read_build_ids(ph, fd, self->offset, self->size)) |
37562eac ACM |
811 | pr_debug("Failed to read buildids, continuing...\n"); |
812 | break; | |
813 | default: | |
814 | pr_debug("unknown feature %d, continuing...\n", feat); | |
815 | } | |
816 | ||
817 | return 0; | |
818 | } | |
2ba08250 | 819 | |
8dc58101 | 820 | static int perf_file_header__read_pipe(struct perf_pipe_file_header *self, |
454c407e TZ |
821 | struct perf_header *ph, int fd, |
822 | bool repipe) | |
7c6a1c65 | 823 | { |
8dc58101 TZ |
824 | if (do_read(fd, self, sizeof(*self)) <= 0 || |
825 | memcmp(&self->magic, __perf_magic, sizeof(self->magic))) | |
826 | return -1; | |
827 | ||
454c407e TZ |
828 | if (repipe && do_write(STDOUT_FILENO, self, sizeof(*self)) < 0) |
829 | return -1; | |
830 | ||
8dc58101 TZ |
831 | if (self->size != sizeof(*self)) { |
832 | u64 size = bswap_64(self->size); | |
833 | ||
834 | if (size != sizeof(*self)) | |
835 | return -1; | |
836 | ||
837 | ph->needs_swap = true; | |
838 | } | |
839 | ||
840 | return 0; | |
841 | } | |
842 | ||
843 | static int perf_header__read_pipe(struct perf_session *session, int fd) | |
844 | { | |
845 | struct perf_header *self = &session->header; | |
846 | struct perf_pipe_file_header f_header; | |
847 | ||
454c407e TZ |
848 | if (perf_file_header__read_pipe(&f_header, self, fd, |
849 | session->repipe) < 0) { | |
8dc58101 TZ |
850 | pr_debug("incompatible file format\n"); |
851 | return -EINVAL; | |
852 | } | |
853 | ||
854 | session->fd = fd; | |
855 | ||
856 | return 0; | |
857 | } | |
858 | ||
859 | int perf_header__read(struct perf_session *session, int fd) | |
860 | { | |
861 | struct perf_header *self = &session->header; | |
ba21594c | 862 | struct perf_file_header f_header; |
7c6a1c65 PZ |
863 | struct perf_file_attr f_attr; |
864 | u64 f_id; | |
7c6a1c65 PZ |
865 | int nr_attrs, nr_ids, i, j; |
866 | ||
8dc58101 TZ |
867 | if (session->fd_pipe) |
868 | return perf_header__read_pipe(session, fd); | |
869 | ||
4dc0a04b ACM |
870 | if (perf_file_header__read(&f_header, self, fd) < 0) { |
871 | pr_debug("incompatible file format\n"); | |
872 | return -EINVAL; | |
873 | } | |
7c6a1c65 PZ |
874 | |
875 | nr_attrs = f_header.attrs.size / sizeof(f_attr); | |
876 | lseek(fd, f_header.attrs.offset, SEEK_SET); | |
877 | ||
878 | for (i = 0; i < nr_attrs; i++) { | |
879 | struct perf_header_attr *attr; | |
1c222bce | 880 | off_t tmp; |
7c6a1c65 | 881 | |
ba21594c | 882 | if (perf_header__getbuffer64(self, fd, &f_attr, sizeof(f_attr))) |
769885f3 | 883 | goto out_errno; |
ba21594c | 884 | |
1c222bce | 885 | tmp = lseek(fd, 0, SEEK_CUR); |
7c6a1c65 PZ |
886 | |
887 | attr = perf_header_attr__new(&f_attr.attr); | |
dc79c0fc | 888 | if (attr == NULL) |
4dc0a04b | 889 | return -ENOMEM; |
7c6a1c65 PZ |
890 | |
891 | nr_ids = f_attr.ids.size / sizeof(u64); | |
892 | lseek(fd, f_attr.ids.offset, SEEK_SET); | |
893 | ||
894 | for (j = 0; j < nr_ids; j++) { | |
ba21594c | 895 | if (perf_header__getbuffer64(self, fd, &f_id, sizeof(f_id))) |
769885f3 | 896 | goto out_errno; |
7c6a1c65 | 897 | |
4dc0a04b ACM |
898 | if (perf_header_attr__add_id(attr, f_id) < 0) { |
899 | perf_header_attr__delete(attr); | |
900 | return -ENOMEM; | |
901 | } | |
902 | } | |
903 | if (perf_header__add_attr(self, attr) < 0) { | |
904 | perf_header_attr__delete(attr); | |
905 | return -ENOMEM; | |
7c6a1c65 | 906 | } |
11deb1f9 | 907 | |
7c6a1c65 PZ |
908 | lseek(fd, tmp, SEEK_SET); |
909 | } | |
910 | ||
8755a8f2 AV |
911 | if (f_header.event_types.size) { |
912 | lseek(fd, f_header.event_types.offset, SEEK_SET); | |
913 | events = malloc(f_header.event_types.size); | |
4dc0a04b ACM |
914 | if (events == NULL) |
915 | return -ENOMEM; | |
ba21594c ACM |
916 | if (perf_header__getbuffer64(self, fd, events, |
917 | f_header.event_types.size)) | |
769885f3 | 918 | goto out_errno; |
8755a8f2 AV |
919 | event_count = f_header.event_types.size / sizeof(struct perf_trace_event_type); |
920 | } | |
03456a15 | 921 | |
37562eac | 922 | perf_header__process_sections(self, fd, perf_file_section__process); |
4778d2e4 | 923 | |
2e01d179 | 924 | lseek(fd, self->data_offset, SEEK_SET); |
7c6a1c65 PZ |
925 | |
926 | self->frozen = 1; | |
4dc0a04b | 927 | return 0; |
769885f3 ACM |
928 | out_errno: |
929 | return -errno; | |
7c6a1c65 | 930 | } |
0d3a5c88 FW |
931 | |
932 | u64 perf_header__sample_type(struct perf_header *header) | |
933 | { | |
934 | u64 type = 0; | |
935 | int i; | |
936 | ||
937 | for (i = 0; i < header->attrs; i++) { | |
938 | struct perf_header_attr *attr = header->attr[i]; | |
939 | ||
940 | if (!type) | |
941 | type = attr->attr.sample_type; | |
942 | else if (type != attr->attr.sample_type) | |
943 | die("non matching sample_type"); | |
944 | } | |
945 | ||
946 | return type; | |
947 | } | |
948 | ||
9c90a61c ACM |
949 | bool perf_header__sample_id_all(const struct perf_header *header) |
950 | { | |
951 | bool value = false, first = true; | |
952 | int i; | |
953 | ||
954 | for (i = 0; i < header->attrs; i++) { | |
955 | struct perf_header_attr *attr = header->attr[i]; | |
956 | ||
957 | if (first) { | |
958 | value = attr->attr.sample_id_all; | |
959 | first = false; | |
960 | } else if (value != attr->attr.sample_id_all) | |
961 | die("non matching sample_id_all"); | |
962 | } | |
963 | ||
964 | return value; | |
965 | } | |
966 | ||
cdd6c482 | 967 | struct perf_event_attr * |
0d3a5c88 FW |
968 | perf_header__find_attr(u64 id, struct perf_header *header) |
969 | { | |
970 | int i; | |
971 | ||
02bf60aa AB |
972 | /* |
973 | * We set id to -1 if the data file doesn't contain sample | |
60e67737 FBH |
974 | * ids. This can happen when the data file contains one type |
975 | * of event and in that case, the header can still store the | |
976 | * event attribute information. Check for this and avoid | |
977 | * walking through the entire list of ids which may be large. | |
02bf60aa | 978 | */ |
60e67737 FBH |
979 | if (id == -1ULL) { |
980 | if (header->attrs > 0) | |
981 | return &header->attr[0]->attr; | |
02bf60aa | 982 | return NULL; |
60e67737 | 983 | } |
02bf60aa | 984 | |
0d3a5c88 FW |
985 | for (i = 0; i < header->attrs; i++) { |
986 | struct perf_header_attr *attr = header->attr[i]; | |
987 | int j; | |
988 | ||
989 | for (j = 0; j < attr->ids; j++) { | |
990 | if (attr->id[j] == id) | |
991 | return &attr->attr; | |
992 | } | |
993 | } | |
994 | ||
995 | return NULL; | |
996 | } | |
2c46dbb5 TZ |
997 | |
998 | int event__synthesize_attr(struct perf_event_attr *attr, u16 ids, u64 *id, | |
999 | event__handler_t process, | |
1000 | struct perf_session *session) | |
1001 | { | |
1002 | event_t *ev; | |
1003 | size_t size; | |
1004 | int err; | |
1005 | ||
1006 | size = sizeof(struct perf_event_attr); | |
1007 | size = ALIGN(size, sizeof(u64)); | |
1008 | size += sizeof(struct perf_event_header); | |
1009 | size += ids * sizeof(u64); | |
1010 | ||
1011 | ev = malloc(size); | |
1012 | ||
ce47dc56 CS |
1013 | if (ev == NULL) |
1014 | return -ENOMEM; | |
1015 | ||
2c46dbb5 TZ |
1016 | ev->attr.attr = *attr; |
1017 | memcpy(ev->attr.id, id, ids * sizeof(u64)); | |
1018 | ||
1019 | ev->attr.header.type = PERF_RECORD_HEADER_ATTR; | |
1020 | ev->attr.header.size = size; | |
1021 | ||
640c03ce | 1022 | err = process(ev, NULL, session); |
2c46dbb5 TZ |
1023 | |
1024 | free(ev); | |
1025 | ||
1026 | return err; | |
1027 | } | |
1028 | ||
640c03ce | 1029 | int event__synthesize_attrs(struct perf_header *self, event__handler_t process, |
2c46dbb5 TZ |
1030 | struct perf_session *session) |
1031 | { | |
1032 | struct perf_header_attr *attr; | |
1033 | int i, err = 0; | |
1034 | ||
1035 | for (i = 0; i < self->attrs; i++) { | |
1036 | attr = self->attr[i]; | |
1037 | ||
1038 | err = event__synthesize_attr(&attr->attr, attr->ids, attr->id, | |
1039 | process, session); | |
1040 | if (err) { | |
1041 | pr_debug("failed to create perf header attribute\n"); | |
1042 | return err; | |
1043 | } | |
1044 | } | |
1045 | ||
1046 | return err; | |
1047 | } | |
1048 | ||
1049 | int event__process_attr(event_t *self, struct perf_session *session) | |
1050 | { | |
1051 | struct perf_header_attr *attr; | |
1052 | unsigned int i, ids, n_ids; | |
1053 | ||
1054 | attr = perf_header_attr__new(&self->attr.attr); | |
1055 | if (attr == NULL) | |
1056 | return -ENOMEM; | |
1057 | ||
1058 | ids = self->header.size; | |
1059 | ids -= (void *)&self->attr.id - (void *)self; | |
1060 | n_ids = ids / sizeof(u64); | |
1061 | ||
1062 | for (i = 0; i < n_ids; i++) { | |
1063 | if (perf_header_attr__add_id(attr, self->attr.id[i]) < 0) { | |
1064 | perf_header_attr__delete(attr); | |
1065 | return -ENOMEM; | |
1066 | } | |
1067 | } | |
1068 | ||
1069 | if (perf_header__add_attr(&session->header, attr) < 0) { | |
1070 | perf_header_attr__delete(attr); | |
1071 | return -ENOMEM; | |
1072 | } | |
1073 | ||
1074 | perf_session__update_sample_type(session); | |
1075 | ||
1076 | return 0; | |
1077 | } | |
cd19a035 TZ |
1078 | |
1079 | int event__synthesize_event_type(u64 event_id, char *name, | |
1080 | event__handler_t process, | |
1081 | struct perf_session *session) | |
1082 | { | |
1083 | event_t ev; | |
1084 | size_t size = 0; | |
1085 | int err = 0; | |
1086 | ||
1087 | memset(&ev, 0, sizeof(ev)); | |
1088 | ||
1089 | ev.event_type.event_type.event_id = event_id; | |
1090 | memset(ev.event_type.event_type.name, 0, MAX_EVENT_NAME); | |
1091 | strncpy(ev.event_type.event_type.name, name, MAX_EVENT_NAME - 1); | |
1092 | ||
1093 | ev.event_type.header.type = PERF_RECORD_HEADER_EVENT_TYPE; | |
1094 | size = strlen(name); | |
1095 | size = ALIGN(size, sizeof(u64)); | |
1096 | ev.event_type.header.size = sizeof(ev.event_type) - | |
1097 | (sizeof(ev.event_type.event_type.name) - size); | |
1098 | ||
640c03ce | 1099 | err = process(&ev, NULL, session); |
cd19a035 TZ |
1100 | |
1101 | return err; | |
1102 | } | |
1103 | ||
1104 | int event__synthesize_event_types(event__handler_t process, | |
1105 | struct perf_session *session) | |
1106 | { | |
1107 | struct perf_trace_event_type *type; | |
1108 | int i, err = 0; | |
1109 | ||
1110 | for (i = 0; i < event_count; i++) { | |
1111 | type = &events[i]; | |
1112 | ||
1113 | err = event__synthesize_event_type(type->event_id, type->name, | |
1114 | process, session); | |
1115 | if (err) { | |
1116 | pr_debug("failed to create perf header event type\n"); | |
1117 | return err; | |
1118 | } | |
1119 | } | |
1120 | ||
1121 | return err; | |
1122 | } | |
1123 | ||
1124 | int event__process_event_type(event_t *self, | |
1125 | struct perf_session *session __unused) | |
1126 | { | |
1127 | if (perf_header__push_event(self->event_type.event_type.event_id, | |
1128 | self->event_type.event_type.name) < 0) | |
1129 | return -ENOMEM; | |
1130 | ||
1131 | return 0; | |
1132 | } | |
9215545e | 1133 | |
69aad6f1 | 1134 | int event__synthesize_tracing_data(int fd, struct list_head *pattrs, |
9215545e TZ |
1135 | event__handler_t process, |
1136 | struct perf_session *session __unused) | |
1137 | { | |
1138 | event_t ev; | |
1139 | ssize_t size = 0, aligned_size = 0, padding; | |
1140 | int err = 0; | |
1141 | ||
1142 | memset(&ev, 0, sizeof(ev)); | |
1143 | ||
1144 | ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA; | |
69aad6f1 | 1145 | size = read_tracing_data_size(fd, pattrs); |
9215545e TZ |
1146 | if (size <= 0) |
1147 | return size; | |
1148 | aligned_size = ALIGN(size, sizeof(u64)); | |
1149 | padding = aligned_size - size; | |
1150 | ev.tracing_data.header.size = sizeof(ev.tracing_data); | |
1151 | ev.tracing_data.size = aligned_size; | |
1152 | ||
640c03ce | 1153 | process(&ev, NULL, session); |
9215545e | 1154 | |
69aad6f1 | 1155 | err = read_tracing_data(fd, pattrs); |
9215545e TZ |
1156 | write_padded(fd, NULL, 0, padding); |
1157 | ||
1158 | return aligned_size; | |
1159 | } | |
1160 | ||
1161 | int event__process_tracing_data(event_t *self, | |
1162 | struct perf_session *session) | |
1163 | { | |
1164 | ssize_t size_read, padding, size = self->tracing_data.size; | |
1165 | off_t offset = lseek(session->fd, 0, SEEK_CUR); | |
1166 | char buf[BUFSIZ]; | |
1167 | ||
1168 | /* setup for reading amidst mmap */ | |
1169 | lseek(session->fd, offset + sizeof(struct tracing_data_event), | |
1170 | SEEK_SET); | |
1171 | ||
454c407e | 1172 | size_read = trace_report(session->fd, session->repipe); |
9215545e TZ |
1173 | |
1174 | padding = ALIGN(size_read, sizeof(u64)) - size_read; | |
1175 | ||
1176 | if (read(session->fd, buf, padding) < 0) | |
1177 | die("reading input file"); | |
454c407e TZ |
1178 | if (session->repipe) { |
1179 | int retw = write(STDOUT_FILENO, buf, padding); | |
1180 | if (retw <= 0 || retw != padding) | |
1181 | die("repiping tracing data padding"); | |
1182 | } | |
9215545e TZ |
1183 | |
1184 | if (size_read + padding != size) | |
1185 | die("tracing data size mismatch"); | |
1186 | ||
1187 | return size_read + padding; | |
1188 | } | |
c7929e47 TZ |
1189 | |
1190 | int event__synthesize_build_id(struct dso *pos, u16 misc, | |
454c407e TZ |
1191 | event__handler_t process, |
1192 | struct machine *machine, | |
c7929e47 TZ |
1193 | struct perf_session *session) |
1194 | { | |
1195 | event_t ev; | |
1196 | size_t len; | |
1197 | int err = 0; | |
1198 | ||
1199 | if (!pos->hit) | |
1200 | return err; | |
1201 | ||
1202 | memset(&ev, 0, sizeof(ev)); | |
1203 | ||
1204 | len = pos->long_name_len + 1; | |
1205 | len = ALIGN(len, NAME_ALIGN); | |
1206 | memcpy(&ev.build_id.build_id, pos->build_id, sizeof(pos->build_id)); | |
1207 | ev.build_id.header.type = PERF_RECORD_HEADER_BUILD_ID; | |
1208 | ev.build_id.header.misc = misc; | |
23346f21 | 1209 | ev.build_id.pid = machine->pid; |
c7929e47 TZ |
1210 | ev.build_id.header.size = sizeof(ev.build_id) + len; |
1211 | memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len); | |
1212 | ||
640c03ce | 1213 | err = process(&ev, NULL, session); |
c7929e47 TZ |
1214 | |
1215 | return err; | |
1216 | } | |
1217 | ||
c7929e47 | 1218 | int event__process_build_id(event_t *self, |
a1645ce1 | 1219 | struct perf_session *session) |
c7929e47 | 1220 | { |
a1645ce1 ZY |
1221 | __event_process_build_id(&self->build_id, |
1222 | self->build_id.filename, | |
1223 | session); | |
c7929e47 TZ |
1224 | return 0; |
1225 | } | |
a1ac1d3c SE |
1226 | |
1227 | void disable_buildid_cache(void) | |
1228 | { | |
1229 | no_buildid_cache = true; | |
1230 | } |