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; | |
68a7a771 FBH |
273 | char *realname = realpath(name, NULL), |
274 | *filename = malloc(size), | |
ef12a141 | 275 | *linkname = malloc(size), *targetname; |
4cf40131 ACM |
276 | int len, err = -1; |
277 | ||
68a7a771 | 278 | if (realname == NULL || filename == NULL || linkname == NULL) |
4cf40131 ACM |
279 | goto out_free; |
280 | ||
9e201442 | 281 | len = snprintf(filename, size, "%s%s%s", |
68a7a771 | 282 | debugdir, is_kallsyms ? "/" : "", realname); |
4cf40131 ACM |
283 | if (mkdir_p(filename, 0755)) |
284 | goto out_free; | |
285 | ||
ef12a141 | 286 | snprintf(filename + len, sizeof(filename) - len, "/%s", sbuild_id); |
4cf40131 | 287 | |
9e201442 ACM |
288 | if (access(filename, F_OK)) { |
289 | if (is_kallsyms) { | |
290 | if (copyfile("/proc/kallsyms", filename)) | |
291 | goto out_free; | |
68a7a771 | 292 | } else if (link(realname, filename) && copyfile(name, filename)) |
9e201442 ACM |
293 | goto out_free; |
294 | } | |
4cf40131 ACM |
295 | |
296 | len = snprintf(linkname, size, "%s/.build-id/%.2s", | |
297 | debugdir, sbuild_id); | |
298 | ||
299 | if (access(linkname, X_OK) && mkdir_p(linkname, 0755)) | |
300 | goto out_free; | |
301 | ||
302 | snprintf(linkname + len, size - len, "/%s", sbuild_id + 2); | |
303 | targetname = filename + strlen(debugdir) - 5; | |
304 | memcpy(targetname, "../..", 5); | |
305 | ||
306 | if (symlink(targetname, linkname) == 0) | |
307 | err = 0; | |
308 | out_free: | |
68a7a771 | 309 | free(realname); |
4cf40131 ACM |
310 | free(filename); |
311 | free(linkname); | |
312 | return err; | |
313 | } | |
314 | ||
ef12a141 ACM |
315 | static int build_id_cache__add_b(const u8 *build_id, size_t build_id_size, |
316 | const char *name, const char *debugdir, | |
317 | bool is_kallsyms) | |
318 | { | |
319 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; | |
320 | ||
321 | build_id__sprintf(build_id, build_id_size, sbuild_id); | |
322 | ||
323 | return build_id_cache__add_s(sbuild_id, debugdir, name, is_kallsyms); | |
324 | } | |
325 | ||
326 | int build_id_cache__remove_s(const char *sbuild_id, const char *debugdir) | |
327 | { | |
328 | const size_t size = PATH_MAX; | |
329 | char *filename = malloc(size), | |
330 | *linkname = malloc(size); | |
331 | int err = -1; | |
332 | ||
333 | if (filename == NULL || linkname == NULL) | |
334 | goto out_free; | |
335 | ||
336 | snprintf(linkname, size, "%s/.build-id/%.2s/%s", | |
337 | debugdir, sbuild_id, sbuild_id + 2); | |
338 | ||
339 | if (access(linkname, F_OK)) | |
340 | goto out_free; | |
341 | ||
342 | if (readlink(linkname, filename, size) < 0) | |
343 | goto out_free; | |
344 | ||
345 | if (unlink(linkname)) | |
346 | goto out_free; | |
347 | ||
348 | /* | |
349 | * Since the link is relative, we must make it absolute: | |
350 | */ | |
351 | snprintf(linkname, size, "%s/.build-id/%.2s/%s", | |
352 | debugdir, sbuild_id, filename); | |
353 | ||
354 | if (unlink(linkname)) | |
355 | goto out_free; | |
356 | ||
357 | err = 0; | |
358 | out_free: | |
359 | free(filename); | |
360 | free(linkname); | |
361 | return err; | |
362 | } | |
363 | ||
364 | static int dso__cache_build_id(struct dso *self, const char *debugdir) | |
365 | { | |
366 | bool is_kallsyms = self->kernel && self->long_name[0] != '/'; | |
367 | ||
368 | return build_id_cache__add_b(self->build_id, sizeof(self->build_id), | |
369 | self->long_name, debugdir, is_kallsyms); | |
370 | } | |
371 | ||
4cf40131 ACM |
372 | static int __dsos__cache_build_ids(struct list_head *head, const char *debugdir) |
373 | { | |
374 | struct dso *pos; | |
375 | int err = 0; | |
376 | ||
377 | dsos__for_each_with_build_id(pos, head) | |
378 | if (dso__cache_build_id(pos, debugdir)) | |
379 | err = -1; | |
380 | ||
381 | return err; | |
382 | } | |
383 | ||
f869097e ACM |
384 | static int machine__cache_build_ids(struct machine *self, const char *debugdir) |
385 | { | |
386 | int ret = __dsos__cache_build_ids(&self->kernel_dsos, debugdir); | |
387 | ret |= __dsos__cache_build_ids(&self->user_dsos, debugdir); | |
388 | return ret; | |
389 | } | |
390 | ||
391 | static int perf_session__cache_build_ids(struct perf_session *self) | |
4cf40131 | 392 | { |
a1645ce1 | 393 | struct rb_node *nd; |
f869097e | 394 | int ret; |
4cf40131 ACM |
395 | char debugdir[PATH_MAX]; |
396 | ||
45de34bb | 397 | snprintf(debugdir, sizeof(debugdir), "%s", buildid_dir); |
4cf40131 ACM |
398 | |
399 | if (mkdir(debugdir, 0755) != 0 && errno != EEXIST) | |
400 | return -1; | |
401 | ||
f869097e ACM |
402 | ret = machine__cache_build_ids(&self->host_machine, debugdir); |
403 | ||
404 | for (nd = rb_first(&self->machines); nd; nd = rb_next(nd)) { | |
23346f21 | 405 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
f869097e | 406 | ret |= machine__cache_build_ids(pos, debugdir); |
a1645ce1 ZY |
407 | } |
408 | return ret ? -1 : 0; | |
409 | } | |
410 | ||
f869097e ACM |
411 | static bool machine__read_build_ids(struct machine *self, bool with_hits) |
412 | { | |
413 | bool ret = __dsos__read_build_ids(&self->kernel_dsos, with_hits); | |
414 | ret |= __dsos__read_build_ids(&self->user_dsos, with_hits); | |
415 | return ret; | |
416 | } | |
417 | ||
418 | static bool perf_session__read_build_ids(struct perf_session *self, bool with_hits) | |
a1645ce1 | 419 | { |
a1645ce1 | 420 | struct rb_node *nd; |
f869097e | 421 | bool ret = machine__read_build_ids(&self->host_machine, with_hits); |
a1645ce1 | 422 | |
f869097e | 423 | for (nd = rb_first(&self->machines); nd; nd = rb_next(nd)) { |
23346f21 | 424 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
f869097e | 425 | ret |= machine__read_build_ids(pos, with_hits); |
a1645ce1 ZY |
426 | } |
427 | ||
428 | return ret; | |
4cf40131 ACM |
429 | } |
430 | ||
d5eed904 | 431 | static int perf_header__adds_write(struct perf_header *self, int fd) |
2ba08250 | 432 | { |
9e827dd0 | 433 | int nr_sections; |
f869097e | 434 | struct perf_session *session; |
9e827dd0 FW |
435 | struct perf_file_section *feat_sec; |
436 | int sec_size; | |
437 | u64 sec_start; | |
d5eed904 | 438 | int idx = 0, err; |
9e827dd0 | 439 | |
f869097e | 440 | session = container_of(self, struct perf_session, header); |
baa2f6ce ACM |
441 | |
442 | if (perf_header__has_feat(self, HEADER_BUILD_ID && | |
443 | !perf_session__read_build_ids(session, true))) | |
444 | perf_header__clear_feat(self, HEADER_BUILD_ID); | |
9e827dd0 FW |
445 | |
446 | nr_sections = bitmap_weight(self->adds_features, HEADER_FEAT_BITS); | |
447 | if (!nr_sections) | |
d5eed904 | 448 | return 0; |
9e827dd0 FW |
449 | |
450 | feat_sec = calloc(sizeof(*feat_sec), nr_sections); | |
d5eed904 ACM |
451 | if (feat_sec == NULL) |
452 | return -ENOMEM; | |
9e827dd0 FW |
453 | |
454 | sec_size = sizeof(*feat_sec) * nr_sections; | |
455 | ||
456 | sec_start = self->data_offset + self->data_size; | |
f887f301 | 457 | lseek(fd, sec_start + sec_size, SEEK_SET); |
2ba08250 | 458 | |
3e13ab2d | 459 | if (perf_header__has_feat(self, HEADER_TRACE_INFO)) { |
9e827dd0 FW |
460 | struct perf_file_section *trace_sec; |
461 | ||
462 | trace_sec = &feat_sec[idx++]; | |
463 | ||
2ba08250 | 464 | /* Write trace info */ |
f887f301 | 465 | trace_sec->offset = lseek(fd, 0, SEEK_CUR); |
69aad6f1 | 466 | read_tracing_data(fd, &evsel_list); |
f887f301 | 467 | trace_sec->size = lseek(fd, 0, SEEK_CUR) - trace_sec->offset; |
2ba08250 | 468 | } |
8671dab9 | 469 | |
9e827dd0 FW |
470 | if (perf_header__has_feat(self, HEADER_BUILD_ID)) { |
471 | struct perf_file_section *buildid_sec; | |
472 | ||
473 | buildid_sec = &feat_sec[idx++]; | |
474 | ||
475 | /* Write build-ids */ | |
f887f301 | 476 | buildid_sec->offset = lseek(fd, 0, SEEK_CUR); |
a1645ce1 | 477 | err = dsos__write_buildid_table(self, fd); |
d5eed904 ACM |
478 | if (err < 0) { |
479 | pr_debug("failed to write buildid table\n"); | |
480 | goto out_free; | |
481 | } | |
f887f301 XG |
482 | buildid_sec->size = lseek(fd, 0, SEEK_CUR) - |
483 | buildid_sec->offset; | |
a1ac1d3c SE |
484 | if (!no_buildid_cache) |
485 | perf_session__cache_build_ids(session); | |
8671dab9 | 486 | } |
9e827dd0 | 487 | |
f887f301 | 488 | lseek(fd, sec_start, SEEK_SET); |
d5eed904 ACM |
489 | err = do_write(fd, feat_sec, sec_size); |
490 | if (err < 0) | |
491 | pr_debug("failed to write feature section\n"); | |
492 | out_free: | |
9e827dd0 | 493 | free(feat_sec); |
d5eed904 | 494 | return err; |
9e827dd0 | 495 | } |
2ba08250 | 496 | |
8dc58101 TZ |
497 | int perf_header__write_pipe(int fd) |
498 | { | |
499 | struct perf_pipe_file_header f_header; | |
500 | int err; | |
501 | ||
502 | f_header = (struct perf_pipe_file_header){ | |
503 | .magic = PERF_MAGIC, | |
504 | .size = sizeof(f_header), | |
505 | }; | |
506 | ||
507 | err = do_write(fd, &f_header, sizeof(f_header)); | |
508 | if (err < 0) { | |
509 | pr_debug("failed to write perf pipe header\n"); | |
510 | return err; | |
511 | } | |
512 | ||
513 | return 0; | |
514 | } | |
515 | ||
d5eed904 | 516 | int perf_header__write(struct perf_header *self, int fd, bool at_exit) |
7c6a1c65 PZ |
517 | { |
518 | struct perf_file_header f_header; | |
519 | struct perf_file_attr f_attr; | |
520 | struct perf_header_attr *attr; | |
d5eed904 | 521 | int i, err; |
7c6a1c65 PZ |
522 | |
523 | lseek(fd, sizeof(f_header), SEEK_SET); | |
524 | ||
7c6a1c65 PZ |
525 | for (i = 0; i < self->attrs; i++) { |
526 | attr = self->attr[i]; | |
527 | ||
528 | attr->id_offset = lseek(fd, 0, SEEK_CUR); | |
d5eed904 ACM |
529 | err = do_write(fd, attr->id, attr->ids * sizeof(u64)); |
530 | if (err < 0) { | |
531 | pr_debug("failed to write perf header\n"); | |
532 | return err; | |
533 | } | |
7c6a1c65 PZ |
534 | } |
535 | ||
536 | ||
537 | self->attr_offset = lseek(fd, 0, SEEK_CUR); | |
538 | ||
539 | for (i = 0; i < self->attrs; i++) { | |
540 | attr = self->attr[i]; | |
541 | ||
542 | f_attr = (struct perf_file_attr){ | |
543 | .attr = attr->attr, | |
544 | .ids = { | |
545 | .offset = attr->id_offset, | |
546 | .size = attr->ids * sizeof(u64), | |
547 | } | |
548 | }; | |
d5eed904 ACM |
549 | err = do_write(fd, &f_attr, sizeof(f_attr)); |
550 | if (err < 0) { | |
551 | pr_debug("failed to write perf header attribute\n"); | |
552 | return err; | |
553 | } | |
7c6a1c65 PZ |
554 | } |
555 | ||
8755a8f2 AV |
556 | self->event_offset = lseek(fd, 0, SEEK_CUR); |
557 | self->event_size = event_count * sizeof(struct perf_trace_event_type); | |
d5eed904 ACM |
558 | if (events) { |
559 | err = do_write(fd, events, self->event_size); | |
560 | if (err < 0) { | |
561 | pr_debug("failed to write perf header events\n"); | |
562 | return err; | |
563 | } | |
564 | } | |
8755a8f2 | 565 | |
7c6a1c65 PZ |
566 | self->data_offset = lseek(fd, 0, SEEK_CUR); |
567 | ||
d5eed904 ACM |
568 | if (at_exit) { |
569 | err = perf_header__adds_write(self, fd); | |
570 | if (err < 0) | |
571 | return err; | |
572 | } | |
9e827dd0 | 573 | |
7c6a1c65 PZ |
574 | f_header = (struct perf_file_header){ |
575 | .magic = PERF_MAGIC, | |
576 | .size = sizeof(f_header), | |
577 | .attr_size = sizeof(f_attr), | |
578 | .attrs = { | |
579 | .offset = self->attr_offset, | |
580 | .size = self->attrs * sizeof(f_attr), | |
581 | }, | |
582 | .data = { | |
583 | .offset = self->data_offset, | |
584 | .size = self->data_size, | |
585 | }, | |
8755a8f2 AV |
586 | .event_types = { |
587 | .offset = self->event_offset, | |
588 | .size = self->event_size, | |
589 | }, | |
7c6a1c65 PZ |
590 | }; |
591 | ||
db9f11e3 | 592 | memcpy(&f_header.adds_features, &self->adds_features, sizeof(self->adds_features)); |
2ba08250 | 593 | |
7c6a1c65 | 594 | lseek(fd, 0, SEEK_SET); |
d5eed904 ACM |
595 | err = do_write(fd, &f_header, sizeof(f_header)); |
596 | if (err < 0) { | |
597 | pr_debug("failed to write perf header\n"); | |
598 | return err; | |
599 | } | |
f887f301 | 600 | lseek(fd, self->data_offset + self->data_size, SEEK_SET); |
7c6a1c65 PZ |
601 | |
602 | self->frozen = 1; | |
d5eed904 | 603 | return 0; |
7c6a1c65 PZ |
604 | } |
605 | ||
ba21594c ACM |
606 | static int perf_header__getbuffer64(struct perf_header *self, |
607 | int fd, void *buf, size_t size) | |
608 | { | |
1e7972cc | 609 | if (readn(fd, buf, size) <= 0) |
ba21594c ACM |
610 | return -1; |
611 | ||
612 | if (self->needs_swap) | |
613 | mem_bswap_64(buf, size); | |
614 | ||
615 | return 0; | |
616 | } | |
617 | ||
37562eac ACM |
618 | int perf_header__process_sections(struct perf_header *self, int fd, |
619 | int (*process)(struct perf_file_section *self, | |
ba21594c | 620 | struct perf_header *ph, |
37562eac | 621 | int feat, int fd)) |
2ba08250 | 622 | { |
9e827dd0 FW |
623 | struct perf_file_section *feat_sec; |
624 | int nr_sections; | |
625 | int sec_size; | |
626 | int idx = 0; | |
769885f3 | 627 | int err = -1, feat = 1; |
9e827dd0 FW |
628 | |
629 | nr_sections = bitmap_weight(self->adds_features, HEADER_FEAT_BITS); | |
630 | if (!nr_sections) | |
37562eac | 631 | return 0; |
9e827dd0 FW |
632 | |
633 | feat_sec = calloc(sizeof(*feat_sec), nr_sections); | |
634 | if (!feat_sec) | |
37562eac | 635 | return -1; |
9e827dd0 FW |
636 | |
637 | sec_size = sizeof(*feat_sec) * nr_sections; | |
638 | ||
f887f301 | 639 | lseek(fd, self->data_offset + self->data_size, SEEK_SET); |
9e827dd0 | 640 | |
ba21594c | 641 | if (perf_header__getbuffer64(self, fd, feat_sec, sec_size)) |
769885f3 | 642 | goto out_free; |
9e827dd0 | 643 | |
769885f3 | 644 | err = 0; |
37562eac ACM |
645 | while (idx < nr_sections && feat < HEADER_LAST_FEATURE) { |
646 | if (perf_header__has_feat(self, feat)) { | |
647 | struct perf_file_section *sec = &feat_sec[idx++]; | |
2ba08250 | 648 | |
ba21594c | 649 | err = process(sec, self, feat, fd); |
37562eac ACM |
650 | if (err < 0) |
651 | break; | |
652 | } | |
653 | ++feat; | |
2ba08250 | 654 | } |
769885f3 | 655 | out_free: |
37562eac ACM |
656 | free(feat_sec); |
657 | return err; | |
769885f3 | 658 | } |
4778d2e4 | 659 | |
37562eac ACM |
660 | int perf_file_header__read(struct perf_file_header *self, |
661 | struct perf_header *ph, int fd) | |
662 | { | |
663 | lseek(fd, 0, SEEK_SET); | |
37562eac | 664 | |
1e7972cc | 665 | if (readn(fd, self, sizeof(*self)) <= 0 || |
ba21594c | 666 | memcmp(&self->magic, __perf_magic, sizeof(self->magic))) |
37562eac ACM |
667 | return -1; |
668 | ||
ba21594c ACM |
669 | if (self->attr_size != sizeof(struct perf_file_attr)) { |
670 | u64 attr_size = bswap_64(self->attr_size); | |
671 | ||
672 | if (attr_size != sizeof(struct perf_file_attr)) | |
673 | return -1; | |
674 | ||
675 | mem_bswap_64(self, offsetof(struct perf_file_header, | |
676 | adds_features)); | |
677 | ph->needs_swap = true; | |
678 | } | |
679 | ||
37562eac ACM |
680 | if (self->size != sizeof(*self)) { |
681 | /* Support the previous format */ | |
682 | if (self->size == offsetof(typeof(*self), adds_features)) | |
683 | bitmap_zero(self->adds_features, HEADER_FEAT_BITS); | |
684 | else | |
685 | return -1; | |
4778d2e4 | 686 | } |
9e827dd0 | 687 | |
37562eac | 688 | memcpy(&ph->adds_features, &self->adds_features, |
ba21594c ACM |
689 | sizeof(ph->adds_features)); |
690 | /* | |
691 | * FIXME: hack that assumes that if we need swap the perf.data file | |
692 | * may be coming from an arch with a different word-size, ergo different | |
693 | * DEFINE_BITMAP format, investigate more later, but for now its mostly | |
694 | * safe to assume that we have a build-id section. Trace files probably | |
695 | * have several other issues in this realm anyway... | |
696 | */ | |
697 | if (ph->needs_swap) { | |
698 | memset(&ph->adds_features, 0, sizeof(ph->adds_features)); | |
699 | perf_header__set_feat(ph, HEADER_BUILD_ID); | |
700 | } | |
37562eac ACM |
701 | |
702 | ph->event_offset = self->event_types.offset; | |
ba21594c ACM |
703 | ph->event_size = self->event_types.size; |
704 | ph->data_offset = self->data.offset; | |
37562eac ACM |
705 | ph->data_size = self->data.size; |
706 | return 0; | |
707 | } | |
708 | ||
a1645ce1 ZY |
709 | static int __event_process_build_id(struct build_id_event *bev, |
710 | char *filename, | |
711 | struct perf_session *session) | |
712 | { | |
713 | int err = -1; | |
714 | struct list_head *head; | |
23346f21 | 715 | struct machine *machine; |
a1645ce1 ZY |
716 | u16 misc; |
717 | struct dso *dso; | |
718 | enum dso_kernel_type dso_type; | |
719 | ||
23346f21 ACM |
720 | machine = perf_session__findnew_machine(session, bev->pid); |
721 | if (!machine) | |
a1645ce1 ZY |
722 | goto out; |
723 | ||
724 | misc = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
725 | ||
726 | switch (misc) { | |
727 | case PERF_RECORD_MISC_KERNEL: | |
728 | dso_type = DSO_TYPE_KERNEL; | |
23346f21 | 729 | head = &machine->kernel_dsos; |
a1645ce1 ZY |
730 | break; |
731 | case PERF_RECORD_MISC_GUEST_KERNEL: | |
732 | dso_type = DSO_TYPE_GUEST_KERNEL; | |
23346f21 | 733 | head = &machine->kernel_dsos; |
a1645ce1 ZY |
734 | break; |
735 | case PERF_RECORD_MISC_USER: | |
736 | case PERF_RECORD_MISC_GUEST_USER: | |
737 | dso_type = DSO_TYPE_USER; | |
23346f21 | 738 | head = &machine->user_dsos; |
a1645ce1 ZY |
739 | break; |
740 | default: | |
741 | goto out; | |
742 | } | |
743 | ||
744 | dso = __dsos__findnew(head, filename); | |
745 | if (dso != NULL) { | |
454c407e TZ |
746 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; |
747 | ||
a1645ce1 | 748 | dso__set_build_id(dso, &bev->build_id); |
454c407e TZ |
749 | |
750 | if (filename[0] == '[') | |
751 | dso->kernel = dso_type; | |
752 | ||
753 | build_id__sprintf(dso->build_id, sizeof(dso->build_id), | |
754 | sbuild_id); | |
755 | pr_debug("build id event received for %s: %s\n", | |
756 | dso->long_name, sbuild_id); | |
757 | } | |
a1645ce1 ZY |
758 | |
759 | err = 0; | |
760 | out: | |
761 | return err; | |
762 | } | |
763 | ||
764 | static int perf_header__read_build_ids(struct perf_header *self, | |
765 | int input, u64 offset, u64 size) | |
766 | { | |
767 | struct perf_session *session = container_of(self, | |
768 | struct perf_session, header); | |
769 | struct build_id_event bev; | |
770 | char filename[PATH_MAX]; | |
771 | u64 limit = offset + size; | |
772 | int err = -1; | |
773 | ||
774 | while (offset < limit) { | |
775 | ssize_t len; | |
776 | ||
777 | if (read(input, &bev, sizeof(bev)) != sizeof(bev)) | |
778 | goto out; | |
779 | ||
780 | if (self->needs_swap) | |
781 | perf_event_header__bswap(&bev.header); | |
782 | ||
783 | len = bev.header.size - sizeof(bev); | |
784 | if (read(input, filename, len) != len) | |
785 | goto out; | |
786 | ||
787 | __event_process_build_id(&bev, filename, session); | |
788 | ||
789 | offset += bev.header.size; | |
790 | } | |
791 | err = 0; | |
792 | out: | |
793 | return err; | |
794 | } | |
795 | ||
37562eac | 796 | static int perf_file_section__process(struct perf_file_section *self, |
ba21594c | 797 | struct perf_header *ph, |
37562eac ACM |
798 | int feat, int fd) |
799 | { | |
f887f301 | 800 | if (lseek(fd, self->offset, SEEK_SET) == (off_t)-1) { |
9486aa38 ACM |
801 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " |
802 | "%d, continuing...\n", self->offset, feat); | |
37562eac ACM |
803 | return 0; |
804 | } | |
805 | ||
806 | switch (feat) { | |
807 | case HEADER_TRACE_INFO: | |
454c407e | 808 | trace_report(fd, false); |
37562eac ACM |
809 | break; |
810 | ||
811 | case HEADER_BUILD_ID: | |
ba21594c | 812 | if (perf_header__read_build_ids(ph, fd, self->offset, self->size)) |
37562eac ACM |
813 | pr_debug("Failed to read buildids, continuing...\n"); |
814 | break; | |
815 | default: | |
816 | pr_debug("unknown feature %d, continuing...\n", feat); | |
817 | } | |
818 | ||
819 | return 0; | |
820 | } | |
2ba08250 | 821 | |
8dc58101 | 822 | static int perf_file_header__read_pipe(struct perf_pipe_file_header *self, |
454c407e TZ |
823 | struct perf_header *ph, int fd, |
824 | bool repipe) | |
7c6a1c65 | 825 | { |
1e7972cc | 826 | if (readn(fd, self, sizeof(*self)) <= 0 || |
8dc58101 TZ |
827 | memcmp(&self->magic, __perf_magic, sizeof(self->magic))) |
828 | return -1; | |
829 | ||
454c407e TZ |
830 | if (repipe && do_write(STDOUT_FILENO, self, sizeof(*self)) < 0) |
831 | return -1; | |
832 | ||
8dc58101 TZ |
833 | if (self->size != sizeof(*self)) { |
834 | u64 size = bswap_64(self->size); | |
835 | ||
836 | if (size != sizeof(*self)) | |
837 | return -1; | |
838 | ||
839 | ph->needs_swap = true; | |
840 | } | |
841 | ||
842 | return 0; | |
843 | } | |
844 | ||
845 | static int perf_header__read_pipe(struct perf_session *session, int fd) | |
846 | { | |
847 | struct perf_header *self = &session->header; | |
848 | struct perf_pipe_file_header f_header; | |
849 | ||
454c407e TZ |
850 | if (perf_file_header__read_pipe(&f_header, self, fd, |
851 | session->repipe) < 0) { | |
8dc58101 TZ |
852 | pr_debug("incompatible file format\n"); |
853 | return -EINVAL; | |
854 | } | |
855 | ||
856 | session->fd = fd; | |
857 | ||
858 | return 0; | |
859 | } | |
860 | ||
861 | int perf_header__read(struct perf_session *session, int fd) | |
862 | { | |
863 | struct perf_header *self = &session->header; | |
ba21594c | 864 | struct perf_file_header f_header; |
7c6a1c65 PZ |
865 | struct perf_file_attr f_attr; |
866 | u64 f_id; | |
7c6a1c65 PZ |
867 | int nr_attrs, nr_ids, i, j; |
868 | ||
8dc58101 TZ |
869 | if (session->fd_pipe) |
870 | return perf_header__read_pipe(session, fd); | |
871 | ||
4dc0a04b ACM |
872 | if (perf_file_header__read(&f_header, self, fd) < 0) { |
873 | pr_debug("incompatible file format\n"); | |
874 | return -EINVAL; | |
875 | } | |
7c6a1c65 PZ |
876 | |
877 | nr_attrs = f_header.attrs.size / sizeof(f_attr); | |
878 | lseek(fd, f_header.attrs.offset, SEEK_SET); | |
879 | ||
880 | for (i = 0; i < nr_attrs; i++) { | |
881 | struct perf_header_attr *attr; | |
1c222bce | 882 | off_t tmp; |
7c6a1c65 | 883 | |
ba21594c | 884 | if (perf_header__getbuffer64(self, fd, &f_attr, sizeof(f_attr))) |
769885f3 | 885 | goto out_errno; |
ba21594c | 886 | |
1c222bce | 887 | tmp = lseek(fd, 0, SEEK_CUR); |
7c6a1c65 PZ |
888 | |
889 | attr = perf_header_attr__new(&f_attr.attr); | |
dc79c0fc | 890 | if (attr == NULL) |
4dc0a04b | 891 | return -ENOMEM; |
7c6a1c65 PZ |
892 | |
893 | nr_ids = f_attr.ids.size / sizeof(u64); | |
894 | lseek(fd, f_attr.ids.offset, SEEK_SET); | |
895 | ||
896 | for (j = 0; j < nr_ids; j++) { | |
ba21594c | 897 | if (perf_header__getbuffer64(self, fd, &f_id, sizeof(f_id))) |
769885f3 | 898 | goto out_errno; |
7c6a1c65 | 899 | |
4dc0a04b ACM |
900 | if (perf_header_attr__add_id(attr, f_id) < 0) { |
901 | perf_header_attr__delete(attr); | |
902 | return -ENOMEM; | |
903 | } | |
904 | } | |
905 | if (perf_header__add_attr(self, attr) < 0) { | |
906 | perf_header_attr__delete(attr); | |
907 | return -ENOMEM; | |
7c6a1c65 | 908 | } |
11deb1f9 | 909 | |
7c6a1c65 PZ |
910 | lseek(fd, tmp, SEEK_SET); |
911 | } | |
912 | ||
8755a8f2 AV |
913 | if (f_header.event_types.size) { |
914 | lseek(fd, f_header.event_types.offset, SEEK_SET); | |
915 | events = malloc(f_header.event_types.size); | |
4dc0a04b ACM |
916 | if (events == NULL) |
917 | return -ENOMEM; | |
ba21594c ACM |
918 | if (perf_header__getbuffer64(self, fd, events, |
919 | f_header.event_types.size)) | |
769885f3 | 920 | goto out_errno; |
8755a8f2 AV |
921 | event_count = f_header.event_types.size / sizeof(struct perf_trace_event_type); |
922 | } | |
03456a15 | 923 | |
37562eac | 924 | perf_header__process_sections(self, fd, perf_file_section__process); |
4778d2e4 | 925 | |
2e01d179 | 926 | lseek(fd, self->data_offset, SEEK_SET); |
7c6a1c65 PZ |
927 | |
928 | self->frozen = 1; | |
4dc0a04b | 929 | return 0; |
769885f3 ACM |
930 | out_errno: |
931 | return -errno; | |
7c6a1c65 | 932 | } |
0d3a5c88 FW |
933 | |
934 | u64 perf_header__sample_type(struct perf_header *header) | |
935 | { | |
936 | u64 type = 0; | |
937 | int i; | |
938 | ||
939 | for (i = 0; i < header->attrs; i++) { | |
940 | struct perf_header_attr *attr = header->attr[i]; | |
941 | ||
942 | if (!type) | |
943 | type = attr->attr.sample_type; | |
944 | else if (type != attr->attr.sample_type) | |
945 | die("non matching sample_type"); | |
946 | } | |
947 | ||
948 | return type; | |
949 | } | |
950 | ||
9c90a61c ACM |
951 | bool perf_header__sample_id_all(const struct perf_header *header) |
952 | { | |
953 | bool value = false, first = true; | |
954 | int i; | |
955 | ||
956 | for (i = 0; i < header->attrs; i++) { | |
957 | struct perf_header_attr *attr = header->attr[i]; | |
958 | ||
959 | if (first) { | |
960 | value = attr->attr.sample_id_all; | |
961 | first = false; | |
962 | } else if (value != attr->attr.sample_id_all) | |
963 | die("non matching sample_id_all"); | |
964 | } | |
965 | ||
966 | return value; | |
967 | } | |
968 | ||
cdd6c482 | 969 | struct perf_event_attr * |
0d3a5c88 FW |
970 | perf_header__find_attr(u64 id, struct perf_header *header) |
971 | { | |
972 | int i; | |
973 | ||
02bf60aa AB |
974 | /* |
975 | * We set id to -1 if the data file doesn't contain sample | |
60e67737 FBH |
976 | * ids. This can happen when the data file contains one type |
977 | * of event and in that case, the header can still store the | |
978 | * event attribute information. Check for this and avoid | |
979 | * walking through the entire list of ids which may be large. | |
02bf60aa | 980 | */ |
60e67737 FBH |
981 | if (id == -1ULL) { |
982 | if (header->attrs > 0) | |
983 | return &header->attr[0]->attr; | |
02bf60aa | 984 | return NULL; |
60e67737 | 985 | } |
02bf60aa | 986 | |
0d3a5c88 FW |
987 | for (i = 0; i < header->attrs; i++) { |
988 | struct perf_header_attr *attr = header->attr[i]; | |
989 | int j; | |
990 | ||
991 | for (j = 0; j < attr->ids; j++) { | |
992 | if (attr->id[j] == id) | |
993 | return &attr->attr; | |
994 | } | |
995 | } | |
996 | ||
997 | return NULL; | |
998 | } | |
2c46dbb5 TZ |
999 | |
1000 | int event__synthesize_attr(struct perf_event_attr *attr, u16 ids, u64 *id, | |
1001 | event__handler_t process, | |
1002 | struct perf_session *session) | |
1003 | { | |
1004 | event_t *ev; | |
1005 | size_t size; | |
1006 | int err; | |
1007 | ||
1008 | size = sizeof(struct perf_event_attr); | |
1009 | size = ALIGN(size, sizeof(u64)); | |
1010 | size += sizeof(struct perf_event_header); | |
1011 | size += ids * sizeof(u64); | |
1012 | ||
1013 | ev = malloc(size); | |
1014 | ||
ce47dc56 CS |
1015 | if (ev == NULL) |
1016 | return -ENOMEM; | |
1017 | ||
2c46dbb5 TZ |
1018 | ev->attr.attr = *attr; |
1019 | memcpy(ev->attr.id, id, ids * sizeof(u64)); | |
1020 | ||
1021 | ev->attr.header.type = PERF_RECORD_HEADER_ATTR; | |
1022 | ev->attr.header.size = size; | |
1023 | ||
640c03ce | 1024 | err = process(ev, NULL, session); |
2c46dbb5 TZ |
1025 | |
1026 | free(ev); | |
1027 | ||
1028 | return err; | |
1029 | } | |
1030 | ||
640c03ce | 1031 | int event__synthesize_attrs(struct perf_header *self, event__handler_t process, |
2c46dbb5 TZ |
1032 | struct perf_session *session) |
1033 | { | |
1034 | struct perf_header_attr *attr; | |
1035 | int i, err = 0; | |
1036 | ||
1037 | for (i = 0; i < self->attrs; i++) { | |
1038 | attr = self->attr[i]; | |
1039 | ||
1040 | err = event__synthesize_attr(&attr->attr, attr->ids, attr->id, | |
1041 | process, session); | |
1042 | if (err) { | |
1043 | pr_debug("failed to create perf header attribute\n"); | |
1044 | return err; | |
1045 | } | |
1046 | } | |
1047 | ||
1048 | return err; | |
1049 | } | |
1050 | ||
1051 | int event__process_attr(event_t *self, struct perf_session *session) | |
1052 | { | |
1053 | struct perf_header_attr *attr; | |
1054 | unsigned int i, ids, n_ids; | |
1055 | ||
1056 | attr = perf_header_attr__new(&self->attr.attr); | |
1057 | if (attr == NULL) | |
1058 | return -ENOMEM; | |
1059 | ||
1060 | ids = self->header.size; | |
1061 | ids -= (void *)&self->attr.id - (void *)self; | |
1062 | n_ids = ids / sizeof(u64); | |
1063 | ||
1064 | for (i = 0; i < n_ids; i++) { | |
1065 | if (perf_header_attr__add_id(attr, self->attr.id[i]) < 0) { | |
1066 | perf_header_attr__delete(attr); | |
1067 | return -ENOMEM; | |
1068 | } | |
1069 | } | |
1070 | ||
1071 | if (perf_header__add_attr(&session->header, attr) < 0) { | |
1072 | perf_header_attr__delete(attr); | |
1073 | return -ENOMEM; | |
1074 | } | |
1075 | ||
1076 | perf_session__update_sample_type(session); | |
1077 | ||
1078 | return 0; | |
1079 | } | |
cd19a035 TZ |
1080 | |
1081 | int event__synthesize_event_type(u64 event_id, char *name, | |
1082 | event__handler_t process, | |
1083 | struct perf_session *session) | |
1084 | { | |
1085 | event_t ev; | |
1086 | size_t size = 0; | |
1087 | int err = 0; | |
1088 | ||
1089 | memset(&ev, 0, sizeof(ev)); | |
1090 | ||
1091 | ev.event_type.event_type.event_id = event_id; | |
1092 | memset(ev.event_type.event_type.name, 0, MAX_EVENT_NAME); | |
1093 | strncpy(ev.event_type.event_type.name, name, MAX_EVENT_NAME - 1); | |
1094 | ||
1095 | ev.event_type.header.type = PERF_RECORD_HEADER_EVENT_TYPE; | |
1096 | size = strlen(name); | |
1097 | size = ALIGN(size, sizeof(u64)); | |
1098 | ev.event_type.header.size = sizeof(ev.event_type) - | |
1099 | (sizeof(ev.event_type.event_type.name) - size); | |
1100 | ||
640c03ce | 1101 | err = process(&ev, NULL, session); |
cd19a035 TZ |
1102 | |
1103 | return err; | |
1104 | } | |
1105 | ||
1106 | int event__synthesize_event_types(event__handler_t process, | |
1107 | struct perf_session *session) | |
1108 | { | |
1109 | struct perf_trace_event_type *type; | |
1110 | int i, err = 0; | |
1111 | ||
1112 | for (i = 0; i < event_count; i++) { | |
1113 | type = &events[i]; | |
1114 | ||
1115 | err = event__synthesize_event_type(type->event_id, type->name, | |
1116 | process, session); | |
1117 | if (err) { | |
1118 | pr_debug("failed to create perf header event type\n"); | |
1119 | return err; | |
1120 | } | |
1121 | } | |
1122 | ||
1123 | return err; | |
1124 | } | |
1125 | ||
1126 | int event__process_event_type(event_t *self, | |
1127 | struct perf_session *session __unused) | |
1128 | { | |
1129 | if (perf_header__push_event(self->event_type.event_type.event_id, | |
1130 | self->event_type.event_type.name) < 0) | |
1131 | return -ENOMEM; | |
1132 | ||
1133 | return 0; | |
1134 | } | |
9215545e | 1135 | |
69aad6f1 | 1136 | int event__synthesize_tracing_data(int fd, struct list_head *pattrs, |
9215545e TZ |
1137 | event__handler_t process, |
1138 | struct perf_session *session __unused) | |
1139 | { | |
1140 | event_t ev; | |
1141 | ssize_t size = 0, aligned_size = 0, padding; | |
1142 | int err = 0; | |
1143 | ||
1144 | memset(&ev, 0, sizeof(ev)); | |
1145 | ||
1146 | ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA; | |
69aad6f1 | 1147 | size = read_tracing_data_size(fd, pattrs); |
9215545e TZ |
1148 | if (size <= 0) |
1149 | return size; | |
1150 | aligned_size = ALIGN(size, sizeof(u64)); | |
1151 | padding = aligned_size - size; | |
1152 | ev.tracing_data.header.size = sizeof(ev.tracing_data); | |
1153 | ev.tracing_data.size = aligned_size; | |
1154 | ||
640c03ce | 1155 | process(&ev, NULL, session); |
9215545e | 1156 | |
69aad6f1 | 1157 | err = read_tracing_data(fd, pattrs); |
9215545e TZ |
1158 | write_padded(fd, NULL, 0, padding); |
1159 | ||
1160 | return aligned_size; | |
1161 | } | |
1162 | ||
1163 | int event__process_tracing_data(event_t *self, | |
1164 | struct perf_session *session) | |
1165 | { | |
1166 | ssize_t size_read, padding, size = self->tracing_data.size; | |
1167 | off_t offset = lseek(session->fd, 0, SEEK_CUR); | |
1168 | char buf[BUFSIZ]; | |
1169 | ||
1170 | /* setup for reading amidst mmap */ | |
1171 | lseek(session->fd, offset + sizeof(struct tracing_data_event), | |
1172 | SEEK_SET); | |
1173 | ||
454c407e | 1174 | size_read = trace_report(session->fd, session->repipe); |
9215545e TZ |
1175 | |
1176 | padding = ALIGN(size_read, sizeof(u64)) - size_read; | |
1177 | ||
1178 | if (read(session->fd, buf, padding) < 0) | |
1179 | die("reading input file"); | |
454c407e TZ |
1180 | if (session->repipe) { |
1181 | int retw = write(STDOUT_FILENO, buf, padding); | |
1182 | if (retw <= 0 || retw != padding) | |
1183 | die("repiping tracing data padding"); | |
1184 | } | |
9215545e TZ |
1185 | |
1186 | if (size_read + padding != size) | |
1187 | die("tracing data size mismatch"); | |
1188 | ||
1189 | return size_read + padding; | |
1190 | } | |
c7929e47 TZ |
1191 | |
1192 | int event__synthesize_build_id(struct dso *pos, u16 misc, | |
454c407e TZ |
1193 | event__handler_t process, |
1194 | struct machine *machine, | |
c7929e47 TZ |
1195 | struct perf_session *session) |
1196 | { | |
1197 | event_t ev; | |
1198 | size_t len; | |
1199 | int err = 0; | |
1200 | ||
1201 | if (!pos->hit) | |
1202 | return err; | |
1203 | ||
1204 | memset(&ev, 0, sizeof(ev)); | |
1205 | ||
1206 | len = pos->long_name_len + 1; | |
1207 | len = ALIGN(len, NAME_ALIGN); | |
1208 | memcpy(&ev.build_id.build_id, pos->build_id, sizeof(pos->build_id)); | |
1209 | ev.build_id.header.type = PERF_RECORD_HEADER_BUILD_ID; | |
1210 | ev.build_id.header.misc = misc; | |
23346f21 | 1211 | ev.build_id.pid = machine->pid; |
c7929e47 TZ |
1212 | ev.build_id.header.size = sizeof(ev.build_id) + len; |
1213 | memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len); | |
1214 | ||
640c03ce | 1215 | err = process(&ev, NULL, session); |
c7929e47 TZ |
1216 | |
1217 | return err; | |
1218 | } | |
1219 | ||
c7929e47 | 1220 | int event__process_build_id(event_t *self, |
a1645ce1 | 1221 | struct perf_session *session) |
c7929e47 | 1222 | { |
a1645ce1 ZY |
1223 | __event_process_build_id(&self->build_id, |
1224 | self->build_id.filename, | |
1225 | session); | |
c7929e47 TZ |
1226 | return 0; |
1227 | } | |
a1ac1d3c SE |
1228 | |
1229 | void disable_buildid_cache(void) | |
1230 | { | |
1231 | no_buildid_cache = true; | |
1232 | } |