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 | 10 | |
361c99a6 | 11 | #include "evlist.h" |
a91e5431 | 12 | #include "evsel.h" |
7c6a1c65 PZ |
13 | #include "util.h" |
14 | #include "header.h" | |
03456a15 FW |
15 | #include "../perf.h" |
16 | #include "trace-event.h" | |
301a0b02 | 17 | #include "session.h" |
8671dab9 | 18 | #include "symbol.h" |
4778d2e4 | 19 | #include "debug.h" |
7c6a1c65 | 20 | |
a1ac1d3c SE |
21 | static bool no_buildid_cache = false; |
22 | ||
8755a8f2 AV |
23 | static int event_count; |
24 | static struct perf_trace_event_type *events; | |
25 | ||
ae99fb2c | 26 | int perf_header__push_event(u64 id, const char *name) |
8755a8f2 | 27 | { |
ec60a3fe | 28 | if (strlen(name) > MAX_EVENT_NAME) |
6beba7ad | 29 | pr_warning("Event %s will be truncated\n", name); |
8755a8f2 AV |
30 | |
31 | if (!events) { | |
32 | events = malloc(sizeof(struct perf_trace_event_type)); | |
ae99fb2c ACM |
33 | if (events == NULL) |
34 | return -ENOMEM; | |
8755a8f2 | 35 | } else { |
ae99fb2c ACM |
36 | struct perf_trace_event_type *nevents; |
37 | ||
38 | nevents = realloc(events, (event_count + 1) * sizeof(*events)); | |
39 | if (nevents == NULL) | |
40 | return -ENOMEM; | |
41 | events = nevents; | |
8755a8f2 AV |
42 | } |
43 | memset(&events[event_count], 0, sizeof(struct perf_trace_event_type)); | |
44 | events[event_count].event_id = id; | |
ec60a3fe | 45 | strncpy(events[event_count].name, name, MAX_EVENT_NAME - 1); |
8755a8f2 | 46 | event_count++; |
ae99fb2c | 47 | return 0; |
8755a8f2 AV |
48 | } |
49 | ||
50 | char *perf_header__find_event(u64 id) | |
51 | { | |
52 | int i; | |
53 | for (i = 0 ; i < event_count; i++) { | |
54 | if (events[i].event_id == id) | |
55 | return events[i].name; | |
56 | } | |
57 | return NULL; | |
58 | } | |
59 | ||
7c6a1c65 PZ |
60 | static const char *__perf_magic = "PERFFILE"; |
61 | ||
62 | #define PERF_MAGIC (*(u64 *)__perf_magic) | |
63 | ||
7c6a1c65 | 64 | struct perf_file_attr { |
cdd6c482 | 65 | struct perf_event_attr attr; |
7c6a1c65 PZ |
66 | struct perf_file_section ids; |
67 | }; | |
68 | ||
8d06367f ACM |
69 | void perf_header__set_feat(struct perf_header *self, int feat) |
70 | { | |
71 | set_bit(feat, self->adds_features); | |
72 | } | |
73 | ||
baa2f6ce ACM |
74 | void perf_header__clear_feat(struct perf_header *self, int feat) |
75 | { | |
76 | clear_bit(feat, self->adds_features); | |
77 | } | |
78 | ||
8d06367f ACM |
79 | bool perf_header__has_feat(const struct perf_header *self, int feat) |
80 | { | |
81 | return test_bit(feat, self->adds_features); | |
82 | } | |
83 | ||
3726cc75 | 84 | static int do_write(int fd, const void *buf, size_t size) |
7c6a1c65 PZ |
85 | { |
86 | while (size) { | |
87 | int ret = write(fd, buf, size); | |
88 | ||
89 | if (ret < 0) | |
d5eed904 | 90 | return -errno; |
7c6a1c65 PZ |
91 | |
92 | size -= ret; | |
93 | buf += ret; | |
94 | } | |
3726cc75 ACM |
95 | |
96 | return 0; | |
7c6a1c65 PZ |
97 | } |
98 | ||
f92cb24c ACM |
99 | #define NAME_ALIGN 64 |
100 | ||
101 | static int write_padded(int fd, const void *bf, size_t count, | |
102 | size_t count_aligned) | |
103 | { | |
104 | static const char zero_buf[NAME_ALIGN]; | |
105 | int err = do_write(fd, bf, count); | |
106 | ||
107 | if (!err) | |
108 | err = do_write(fd, zero_buf, count_aligned - count); | |
109 | ||
110 | return err; | |
111 | } | |
112 | ||
4cf40131 ACM |
113 | #define dsos__for_each_with_build_id(pos, head) \ |
114 | list_for_each_entry(pos, head, node) \ | |
115 | if (!pos->has_build_id) \ | |
116 | continue; \ | |
117 | else | |
118 | ||
a1645ce1 ZY |
119 | static int __dsos__write_buildid_table(struct list_head *head, pid_t pid, |
120 | u16 misc, int fd) | |
8671dab9 | 121 | { |
e30a3d12 ACM |
122 | struct dso *pos; |
123 | ||
4cf40131 | 124 | dsos__for_each_with_build_id(pos, head) { |
d5eed904 | 125 | int err; |
e30a3d12 | 126 | struct build_id_event b; |
6122e4e4 | 127 | size_t len; |
e30a3d12 | 128 | |
6122e4e4 ACM |
129 | if (!pos->hit) |
130 | continue; | |
131 | len = pos->long_name_len + 1; | |
7691b1ec | 132 | len = ALIGN(len, NAME_ALIGN); |
e30a3d12 ACM |
133 | memset(&b, 0, sizeof(b)); |
134 | memcpy(&b.build_id, pos->build_id, sizeof(pos->build_id)); | |
a1645ce1 | 135 | b.pid = pid; |
a89e5abe | 136 | b.header.misc = misc; |
e30a3d12 | 137 | b.header.size = sizeof(b) + len; |
d5eed904 ACM |
138 | err = do_write(fd, &b, sizeof(b)); |
139 | if (err < 0) | |
140 | return err; | |
f92cb24c ACM |
141 | err = write_padded(fd, pos->long_name, |
142 | pos->long_name_len + 1, len); | |
d5eed904 ACM |
143 | if (err < 0) |
144 | return err; | |
57f395a7 | 145 | } |
3726cc75 ACM |
146 | |
147 | return 0; | |
8671dab9 FW |
148 | } |
149 | ||
f869097e ACM |
150 | static int machine__write_buildid_table(struct machine *self, int fd) |
151 | { | |
152 | int err; | |
153 | u16 kmisc = PERF_RECORD_MISC_KERNEL, | |
154 | umisc = PERF_RECORD_MISC_USER; | |
155 | ||
156 | if (!machine__is_host(self)) { | |
157 | kmisc = PERF_RECORD_MISC_GUEST_KERNEL; | |
158 | umisc = PERF_RECORD_MISC_GUEST_USER; | |
159 | } | |
160 | ||
161 | err = __dsos__write_buildid_table(&self->kernel_dsos, self->pid, | |
162 | kmisc, fd); | |
163 | if (err == 0) | |
164 | err = __dsos__write_buildid_table(&self->user_dsos, | |
165 | self->pid, umisc, fd); | |
166 | return err; | |
167 | } | |
168 | ||
a1645ce1 | 169 | static int dsos__write_buildid_table(struct perf_header *header, int fd) |
b0da954a | 170 | { |
a1645ce1 ZY |
171 | struct perf_session *session = container_of(header, |
172 | struct perf_session, header); | |
173 | struct rb_node *nd; | |
f869097e ACM |
174 | int err = machine__write_buildid_table(&session->host_machine, fd); |
175 | ||
176 | if (err) | |
177 | return err; | |
a1645ce1 | 178 | |
23346f21 ACM |
179 | for (nd = rb_first(&session->machines); nd; nd = rb_next(nd)) { |
180 | struct machine *pos = rb_entry(nd, struct machine, rb_node); | |
f869097e | 181 | err = machine__write_buildid_table(pos, fd); |
a1645ce1 ZY |
182 | if (err) |
183 | break; | |
184 | } | |
b0da954a ACM |
185 | return err; |
186 | } | |
187 | ||
ef12a141 ACM |
188 | int build_id_cache__add_s(const char *sbuild_id, const char *debugdir, |
189 | const char *name, bool is_kallsyms) | |
4cf40131 ACM |
190 | { |
191 | const size_t size = PATH_MAX; | |
68a7a771 FBH |
192 | char *realname = realpath(name, NULL), |
193 | *filename = malloc(size), | |
ef12a141 | 194 | *linkname = malloc(size), *targetname; |
4cf40131 ACM |
195 | int len, err = -1; |
196 | ||
68a7a771 | 197 | if (realname == NULL || filename == NULL || linkname == NULL) |
4cf40131 ACM |
198 | goto out_free; |
199 | ||
9e201442 | 200 | len = snprintf(filename, size, "%s%s%s", |
68a7a771 | 201 | debugdir, is_kallsyms ? "/" : "", realname); |
4cf40131 ACM |
202 | if (mkdir_p(filename, 0755)) |
203 | goto out_free; | |
204 | ||
ef12a141 | 205 | snprintf(filename + len, sizeof(filename) - len, "/%s", sbuild_id); |
4cf40131 | 206 | |
9e201442 ACM |
207 | if (access(filename, F_OK)) { |
208 | if (is_kallsyms) { | |
209 | if (copyfile("/proc/kallsyms", filename)) | |
210 | goto out_free; | |
68a7a771 | 211 | } else if (link(realname, filename) && copyfile(name, filename)) |
9e201442 ACM |
212 | goto out_free; |
213 | } | |
4cf40131 ACM |
214 | |
215 | len = snprintf(linkname, size, "%s/.build-id/%.2s", | |
216 | debugdir, sbuild_id); | |
217 | ||
218 | if (access(linkname, X_OK) && mkdir_p(linkname, 0755)) | |
219 | goto out_free; | |
220 | ||
221 | snprintf(linkname + len, size - len, "/%s", sbuild_id + 2); | |
222 | targetname = filename + strlen(debugdir) - 5; | |
223 | memcpy(targetname, "../..", 5); | |
224 | ||
225 | if (symlink(targetname, linkname) == 0) | |
226 | err = 0; | |
227 | out_free: | |
68a7a771 | 228 | free(realname); |
4cf40131 ACM |
229 | free(filename); |
230 | free(linkname); | |
231 | return err; | |
232 | } | |
233 | ||
ef12a141 ACM |
234 | static int build_id_cache__add_b(const u8 *build_id, size_t build_id_size, |
235 | const char *name, const char *debugdir, | |
236 | bool is_kallsyms) | |
237 | { | |
238 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; | |
239 | ||
240 | build_id__sprintf(build_id, build_id_size, sbuild_id); | |
241 | ||
242 | return build_id_cache__add_s(sbuild_id, debugdir, name, is_kallsyms); | |
243 | } | |
244 | ||
245 | int build_id_cache__remove_s(const char *sbuild_id, const char *debugdir) | |
246 | { | |
247 | const size_t size = PATH_MAX; | |
248 | char *filename = malloc(size), | |
249 | *linkname = malloc(size); | |
250 | int err = -1; | |
251 | ||
252 | if (filename == NULL || linkname == NULL) | |
253 | goto out_free; | |
254 | ||
255 | snprintf(linkname, size, "%s/.build-id/%.2s/%s", | |
256 | debugdir, sbuild_id, sbuild_id + 2); | |
257 | ||
258 | if (access(linkname, F_OK)) | |
259 | goto out_free; | |
260 | ||
261 | if (readlink(linkname, filename, size) < 0) | |
262 | goto out_free; | |
263 | ||
264 | if (unlink(linkname)) | |
265 | goto out_free; | |
266 | ||
267 | /* | |
268 | * Since the link is relative, we must make it absolute: | |
269 | */ | |
270 | snprintf(linkname, size, "%s/.build-id/%.2s/%s", | |
271 | debugdir, sbuild_id, filename); | |
272 | ||
273 | if (unlink(linkname)) | |
274 | goto out_free; | |
275 | ||
276 | err = 0; | |
277 | out_free: | |
278 | free(filename); | |
279 | free(linkname); | |
280 | return err; | |
281 | } | |
282 | ||
283 | static int dso__cache_build_id(struct dso *self, const char *debugdir) | |
284 | { | |
285 | bool is_kallsyms = self->kernel && self->long_name[0] != '/'; | |
286 | ||
287 | return build_id_cache__add_b(self->build_id, sizeof(self->build_id), | |
288 | self->long_name, debugdir, is_kallsyms); | |
289 | } | |
290 | ||
4cf40131 ACM |
291 | static int __dsos__cache_build_ids(struct list_head *head, const char *debugdir) |
292 | { | |
293 | struct dso *pos; | |
294 | int err = 0; | |
295 | ||
296 | dsos__for_each_with_build_id(pos, head) | |
297 | if (dso__cache_build_id(pos, debugdir)) | |
298 | err = -1; | |
299 | ||
300 | return err; | |
301 | } | |
302 | ||
f869097e ACM |
303 | static int machine__cache_build_ids(struct machine *self, const char *debugdir) |
304 | { | |
305 | int ret = __dsos__cache_build_ids(&self->kernel_dsos, debugdir); | |
306 | ret |= __dsos__cache_build_ids(&self->user_dsos, debugdir); | |
307 | return ret; | |
308 | } | |
309 | ||
310 | static int perf_session__cache_build_ids(struct perf_session *self) | |
4cf40131 | 311 | { |
a1645ce1 | 312 | struct rb_node *nd; |
f869097e | 313 | int ret; |
4cf40131 ACM |
314 | char debugdir[PATH_MAX]; |
315 | ||
45de34bb | 316 | snprintf(debugdir, sizeof(debugdir), "%s", buildid_dir); |
4cf40131 ACM |
317 | |
318 | if (mkdir(debugdir, 0755) != 0 && errno != EEXIST) | |
319 | return -1; | |
320 | ||
f869097e ACM |
321 | ret = machine__cache_build_ids(&self->host_machine, debugdir); |
322 | ||
323 | for (nd = rb_first(&self->machines); nd; nd = rb_next(nd)) { | |
23346f21 | 324 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
f869097e | 325 | ret |= machine__cache_build_ids(pos, debugdir); |
a1645ce1 ZY |
326 | } |
327 | return ret ? -1 : 0; | |
328 | } | |
329 | ||
f869097e ACM |
330 | static bool machine__read_build_ids(struct machine *self, bool with_hits) |
331 | { | |
332 | bool ret = __dsos__read_build_ids(&self->kernel_dsos, with_hits); | |
333 | ret |= __dsos__read_build_ids(&self->user_dsos, with_hits); | |
334 | return ret; | |
335 | } | |
336 | ||
337 | static bool perf_session__read_build_ids(struct perf_session *self, bool with_hits) | |
a1645ce1 | 338 | { |
a1645ce1 | 339 | struct rb_node *nd; |
f869097e | 340 | bool ret = machine__read_build_ids(&self->host_machine, with_hits); |
a1645ce1 | 341 | |
f869097e | 342 | for (nd = rb_first(&self->machines); nd; nd = rb_next(nd)) { |
23346f21 | 343 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
f869097e | 344 | ret |= machine__read_build_ids(pos, with_hits); |
a1645ce1 ZY |
345 | } |
346 | ||
347 | return ret; | |
4cf40131 ACM |
348 | } |
349 | ||
361c99a6 ACM |
350 | static int perf_header__adds_write(struct perf_header *self, |
351 | struct perf_evlist *evlist, int fd) | |
2ba08250 | 352 | { |
9e827dd0 | 353 | int nr_sections; |
f869097e | 354 | struct perf_session *session; |
9e827dd0 FW |
355 | struct perf_file_section *feat_sec; |
356 | int sec_size; | |
357 | u64 sec_start; | |
d5eed904 | 358 | int idx = 0, err; |
9e827dd0 | 359 | |
f869097e | 360 | session = container_of(self, struct perf_session, header); |
baa2f6ce ACM |
361 | |
362 | if (perf_header__has_feat(self, HEADER_BUILD_ID && | |
363 | !perf_session__read_build_ids(session, true))) | |
364 | perf_header__clear_feat(self, HEADER_BUILD_ID); | |
9e827dd0 FW |
365 | |
366 | nr_sections = bitmap_weight(self->adds_features, HEADER_FEAT_BITS); | |
367 | if (!nr_sections) | |
d5eed904 | 368 | return 0; |
9e827dd0 FW |
369 | |
370 | feat_sec = calloc(sizeof(*feat_sec), nr_sections); | |
d5eed904 ACM |
371 | if (feat_sec == NULL) |
372 | return -ENOMEM; | |
9e827dd0 FW |
373 | |
374 | sec_size = sizeof(*feat_sec) * nr_sections; | |
375 | ||
376 | sec_start = self->data_offset + self->data_size; | |
f887f301 | 377 | lseek(fd, sec_start + sec_size, SEEK_SET); |
2ba08250 | 378 | |
3e13ab2d | 379 | if (perf_header__has_feat(self, HEADER_TRACE_INFO)) { |
9e827dd0 FW |
380 | struct perf_file_section *trace_sec; |
381 | ||
382 | trace_sec = &feat_sec[idx++]; | |
383 | ||
2ba08250 | 384 | /* Write trace info */ |
f887f301 | 385 | trace_sec->offset = lseek(fd, 0, SEEK_CUR); |
361c99a6 | 386 | read_tracing_data(fd, &evlist->entries); |
f887f301 | 387 | trace_sec->size = lseek(fd, 0, SEEK_CUR) - trace_sec->offset; |
2ba08250 | 388 | } |
8671dab9 | 389 | |
9e827dd0 FW |
390 | if (perf_header__has_feat(self, HEADER_BUILD_ID)) { |
391 | struct perf_file_section *buildid_sec; | |
392 | ||
393 | buildid_sec = &feat_sec[idx++]; | |
394 | ||
395 | /* Write build-ids */ | |
f887f301 | 396 | buildid_sec->offset = lseek(fd, 0, SEEK_CUR); |
a1645ce1 | 397 | err = dsos__write_buildid_table(self, fd); |
d5eed904 ACM |
398 | if (err < 0) { |
399 | pr_debug("failed to write buildid table\n"); | |
400 | goto out_free; | |
401 | } | |
f887f301 XG |
402 | buildid_sec->size = lseek(fd, 0, SEEK_CUR) - |
403 | buildid_sec->offset; | |
a1ac1d3c SE |
404 | if (!no_buildid_cache) |
405 | perf_session__cache_build_ids(session); | |
8671dab9 | 406 | } |
9e827dd0 | 407 | |
f887f301 | 408 | lseek(fd, sec_start, SEEK_SET); |
d5eed904 ACM |
409 | err = do_write(fd, feat_sec, sec_size); |
410 | if (err < 0) | |
411 | pr_debug("failed to write feature section\n"); | |
412 | out_free: | |
9e827dd0 | 413 | free(feat_sec); |
d5eed904 | 414 | return err; |
9e827dd0 | 415 | } |
2ba08250 | 416 | |
8dc58101 TZ |
417 | int perf_header__write_pipe(int fd) |
418 | { | |
419 | struct perf_pipe_file_header f_header; | |
420 | int err; | |
421 | ||
422 | f_header = (struct perf_pipe_file_header){ | |
423 | .magic = PERF_MAGIC, | |
424 | .size = sizeof(f_header), | |
425 | }; | |
426 | ||
427 | err = do_write(fd, &f_header, sizeof(f_header)); | |
428 | if (err < 0) { | |
429 | pr_debug("failed to write perf pipe header\n"); | |
430 | return err; | |
431 | } | |
432 | ||
433 | return 0; | |
434 | } | |
435 | ||
a91e5431 ACM |
436 | int perf_session__write_header(struct perf_session *session, |
437 | struct perf_evlist *evlist, | |
438 | int fd, bool at_exit) | |
7c6a1c65 PZ |
439 | { |
440 | struct perf_file_header f_header; | |
441 | struct perf_file_attr f_attr; | |
a91e5431 ACM |
442 | struct perf_header *self = &session->header; |
443 | struct perf_evsel *attr, *pair = NULL; | |
444 | int err; | |
7c6a1c65 PZ |
445 | |
446 | lseek(fd, sizeof(f_header), SEEK_SET); | |
447 | ||
a91e5431 ACM |
448 | if (session->evlist != evlist) |
449 | pair = list_entry(session->evlist->entries.next, struct perf_evsel, node); | |
7c6a1c65 | 450 | |
a91e5431 | 451 | list_for_each_entry(attr, &evlist->entries, node) { |
7c6a1c65 | 452 | attr->id_offset = lseek(fd, 0, SEEK_CUR); |
d5eed904 ACM |
453 | err = do_write(fd, attr->id, attr->ids * sizeof(u64)); |
454 | if (err < 0) { | |
a91e5431 | 455 | out_err_write: |
d5eed904 ACM |
456 | pr_debug("failed to write perf header\n"); |
457 | return err; | |
458 | } | |
a91e5431 ACM |
459 | if (session->evlist != evlist) { |
460 | err = do_write(fd, pair->id, pair->ids * sizeof(u64)); | |
461 | if (err < 0) | |
462 | goto out_err_write; | |
463 | attr->ids += pair->ids; | |
464 | pair = list_entry(pair->node.next, struct perf_evsel, node); | |
465 | } | |
7c6a1c65 PZ |
466 | } |
467 | ||
7c6a1c65 PZ |
468 | self->attr_offset = lseek(fd, 0, SEEK_CUR); |
469 | ||
a91e5431 | 470 | list_for_each_entry(attr, &evlist->entries, node) { |
7c6a1c65 PZ |
471 | f_attr = (struct perf_file_attr){ |
472 | .attr = attr->attr, | |
473 | .ids = { | |
474 | .offset = attr->id_offset, | |
475 | .size = attr->ids * sizeof(u64), | |
476 | } | |
477 | }; | |
d5eed904 ACM |
478 | err = do_write(fd, &f_attr, sizeof(f_attr)); |
479 | if (err < 0) { | |
480 | pr_debug("failed to write perf header attribute\n"); | |
481 | return err; | |
482 | } | |
7c6a1c65 PZ |
483 | } |
484 | ||
8755a8f2 AV |
485 | self->event_offset = lseek(fd, 0, SEEK_CUR); |
486 | self->event_size = event_count * sizeof(struct perf_trace_event_type); | |
d5eed904 ACM |
487 | if (events) { |
488 | err = do_write(fd, events, self->event_size); | |
489 | if (err < 0) { | |
490 | pr_debug("failed to write perf header events\n"); | |
491 | return err; | |
492 | } | |
493 | } | |
8755a8f2 | 494 | |
7c6a1c65 PZ |
495 | self->data_offset = lseek(fd, 0, SEEK_CUR); |
496 | ||
d5eed904 | 497 | if (at_exit) { |
361c99a6 | 498 | err = perf_header__adds_write(self, evlist, fd); |
d5eed904 ACM |
499 | if (err < 0) |
500 | return err; | |
501 | } | |
9e827dd0 | 502 | |
7c6a1c65 PZ |
503 | f_header = (struct perf_file_header){ |
504 | .magic = PERF_MAGIC, | |
505 | .size = sizeof(f_header), | |
506 | .attr_size = sizeof(f_attr), | |
507 | .attrs = { | |
508 | .offset = self->attr_offset, | |
a91e5431 | 509 | .size = evlist->nr_entries * sizeof(f_attr), |
7c6a1c65 PZ |
510 | }, |
511 | .data = { | |
512 | .offset = self->data_offset, | |
513 | .size = self->data_size, | |
514 | }, | |
8755a8f2 AV |
515 | .event_types = { |
516 | .offset = self->event_offset, | |
517 | .size = self->event_size, | |
518 | }, | |
7c6a1c65 PZ |
519 | }; |
520 | ||
db9f11e3 | 521 | memcpy(&f_header.adds_features, &self->adds_features, sizeof(self->adds_features)); |
2ba08250 | 522 | |
7c6a1c65 | 523 | lseek(fd, 0, SEEK_SET); |
d5eed904 ACM |
524 | err = do_write(fd, &f_header, sizeof(f_header)); |
525 | if (err < 0) { | |
526 | pr_debug("failed to write perf header\n"); | |
527 | return err; | |
528 | } | |
f887f301 | 529 | lseek(fd, self->data_offset + self->data_size, SEEK_SET); |
7c6a1c65 PZ |
530 | |
531 | self->frozen = 1; | |
d5eed904 | 532 | return 0; |
7c6a1c65 PZ |
533 | } |
534 | ||
ba21594c ACM |
535 | static int perf_header__getbuffer64(struct perf_header *self, |
536 | int fd, void *buf, size_t size) | |
537 | { | |
1e7972cc | 538 | if (readn(fd, buf, size) <= 0) |
ba21594c ACM |
539 | return -1; |
540 | ||
541 | if (self->needs_swap) | |
542 | mem_bswap_64(buf, size); | |
543 | ||
544 | return 0; | |
545 | } | |
546 | ||
37562eac ACM |
547 | int perf_header__process_sections(struct perf_header *self, int fd, |
548 | int (*process)(struct perf_file_section *self, | |
ba21594c | 549 | struct perf_header *ph, |
37562eac | 550 | int feat, int fd)) |
2ba08250 | 551 | { |
9e827dd0 FW |
552 | struct perf_file_section *feat_sec; |
553 | int nr_sections; | |
554 | int sec_size; | |
555 | int idx = 0; | |
769885f3 | 556 | int err = -1, feat = 1; |
9e827dd0 FW |
557 | |
558 | nr_sections = bitmap_weight(self->adds_features, HEADER_FEAT_BITS); | |
559 | if (!nr_sections) | |
37562eac | 560 | return 0; |
9e827dd0 FW |
561 | |
562 | feat_sec = calloc(sizeof(*feat_sec), nr_sections); | |
563 | if (!feat_sec) | |
37562eac | 564 | return -1; |
9e827dd0 FW |
565 | |
566 | sec_size = sizeof(*feat_sec) * nr_sections; | |
567 | ||
f887f301 | 568 | lseek(fd, self->data_offset + self->data_size, SEEK_SET); |
9e827dd0 | 569 | |
ba21594c | 570 | if (perf_header__getbuffer64(self, fd, feat_sec, sec_size)) |
769885f3 | 571 | goto out_free; |
9e827dd0 | 572 | |
769885f3 | 573 | err = 0; |
37562eac ACM |
574 | while (idx < nr_sections && feat < HEADER_LAST_FEATURE) { |
575 | if (perf_header__has_feat(self, feat)) { | |
576 | struct perf_file_section *sec = &feat_sec[idx++]; | |
2ba08250 | 577 | |
ba21594c | 578 | err = process(sec, self, feat, fd); |
37562eac ACM |
579 | if (err < 0) |
580 | break; | |
581 | } | |
582 | ++feat; | |
2ba08250 | 583 | } |
769885f3 | 584 | out_free: |
37562eac ACM |
585 | free(feat_sec); |
586 | return err; | |
769885f3 | 587 | } |
4778d2e4 | 588 | |
37562eac ACM |
589 | int perf_file_header__read(struct perf_file_header *self, |
590 | struct perf_header *ph, int fd) | |
591 | { | |
592 | lseek(fd, 0, SEEK_SET); | |
37562eac | 593 | |
1e7972cc | 594 | if (readn(fd, self, sizeof(*self)) <= 0 || |
ba21594c | 595 | memcmp(&self->magic, __perf_magic, sizeof(self->magic))) |
37562eac ACM |
596 | return -1; |
597 | ||
ba21594c ACM |
598 | if (self->attr_size != sizeof(struct perf_file_attr)) { |
599 | u64 attr_size = bswap_64(self->attr_size); | |
600 | ||
601 | if (attr_size != sizeof(struct perf_file_attr)) | |
602 | return -1; | |
603 | ||
604 | mem_bswap_64(self, offsetof(struct perf_file_header, | |
605 | adds_features)); | |
606 | ph->needs_swap = true; | |
607 | } | |
608 | ||
37562eac ACM |
609 | if (self->size != sizeof(*self)) { |
610 | /* Support the previous format */ | |
611 | if (self->size == offsetof(typeof(*self), adds_features)) | |
612 | bitmap_zero(self->adds_features, HEADER_FEAT_BITS); | |
613 | else | |
614 | return -1; | |
4778d2e4 | 615 | } |
9e827dd0 | 616 | |
37562eac | 617 | memcpy(&ph->adds_features, &self->adds_features, |
ba21594c ACM |
618 | sizeof(ph->adds_features)); |
619 | /* | |
620 | * FIXME: hack that assumes that if we need swap the perf.data file | |
621 | * may be coming from an arch with a different word-size, ergo different | |
622 | * DEFINE_BITMAP format, investigate more later, but for now its mostly | |
623 | * safe to assume that we have a build-id section. Trace files probably | |
624 | * have several other issues in this realm anyway... | |
625 | */ | |
626 | if (ph->needs_swap) { | |
627 | memset(&ph->adds_features, 0, sizeof(ph->adds_features)); | |
628 | perf_header__set_feat(ph, HEADER_BUILD_ID); | |
629 | } | |
37562eac ACM |
630 | |
631 | ph->event_offset = self->event_types.offset; | |
ba21594c ACM |
632 | ph->event_size = self->event_types.size; |
633 | ph->data_offset = self->data.offset; | |
37562eac ACM |
634 | ph->data_size = self->data.size; |
635 | return 0; | |
636 | } | |
637 | ||
a1645ce1 ZY |
638 | static int __event_process_build_id(struct build_id_event *bev, |
639 | char *filename, | |
640 | struct perf_session *session) | |
641 | { | |
642 | int err = -1; | |
643 | struct list_head *head; | |
23346f21 | 644 | struct machine *machine; |
a1645ce1 ZY |
645 | u16 misc; |
646 | struct dso *dso; | |
647 | enum dso_kernel_type dso_type; | |
648 | ||
23346f21 ACM |
649 | machine = perf_session__findnew_machine(session, bev->pid); |
650 | if (!machine) | |
a1645ce1 ZY |
651 | goto out; |
652 | ||
653 | misc = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
654 | ||
655 | switch (misc) { | |
656 | case PERF_RECORD_MISC_KERNEL: | |
657 | dso_type = DSO_TYPE_KERNEL; | |
23346f21 | 658 | head = &machine->kernel_dsos; |
a1645ce1 ZY |
659 | break; |
660 | case PERF_RECORD_MISC_GUEST_KERNEL: | |
661 | dso_type = DSO_TYPE_GUEST_KERNEL; | |
23346f21 | 662 | head = &machine->kernel_dsos; |
a1645ce1 ZY |
663 | break; |
664 | case PERF_RECORD_MISC_USER: | |
665 | case PERF_RECORD_MISC_GUEST_USER: | |
666 | dso_type = DSO_TYPE_USER; | |
23346f21 | 667 | head = &machine->user_dsos; |
a1645ce1 ZY |
668 | break; |
669 | default: | |
670 | goto out; | |
671 | } | |
672 | ||
673 | dso = __dsos__findnew(head, filename); | |
674 | if (dso != NULL) { | |
454c407e TZ |
675 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; |
676 | ||
a1645ce1 | 677 | dso__set_build_id(dso, &bev->build_id); |
454c407e TZ |
678 | |
679 | if (filename[0] == '[') | |
680 | dso->kernel = dso_type; | |
681 | ||
682 | build_id__sprintf(dso->build_id, sizeof(dso->build_id), | |
683 | sbuild_id); | |
684 | pr_debug("build id event received for %s: %s\n", | |
685 | dso->long_name, sbuild_id); | |
686 | } | |
a1645ce1 ZY |
687 | |
688 | err = 0; | |
689 | out: | |
690 | return err; | |
691 | } | |
692 | ||
693 | static int perf_header__read_build_ids(struct perf_header *self, | |
694 | int input, u64 offset, u64 size) | |
695 | { | |
696 | struct perf_session *session = container_of(self, | |
697 | struct perf_session, header); | |
698 | struct build_id_event bev; | |
699 | char filename[PATH_MAX]; | |
700 | u64 limit = offset + size; | |
701 | int err = -1; | |
702 | ||
703 | while (offset < limit) { | |
704 | ssize_t len; | |
705 | ||
706 | if (read(input, &bev, sizeof(bev)) != sizeof(bev)) | |
707 | goto out; | |
708 | ||
709 | if (self->needs_swap) | |
710 | perf_event_header__bswap(&bev.header); | |
711 | ||
712 | len = bev.header.size - sizeof(bev); | |
713 | if (read(input, filename, len) != len) | |
714 | goto out; | |
715 | ||
716 | __event_process_build_id(&bev, filename, session); | |
717 | ||
718 | offset += bev.header.size; | |
719 | } | |
720 | err = 0; | |
721 | out: | |
722 | return err; | |
723 | } | |
724 | ||
37562eac | 725 | static int perf_file_section__process(struct perf_file_section *self, |
ba21594c | 726 | struct perf_header *ph, |
37562eac ACM |
727 | int feat, int fd) |
728 | { | |
f887f301 | 729 | if (lseek(fd, self->offset, SEEK_SET) == (off_t)-1) { |
9486aa38 ACM |
730 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " |
731 | "%d, continuing...\n", self->offset, feat); | |
37562eac ACM |
732 | return 0; |
733 | } | |
734 | ||
735 | switch (feat) { | |
736 | case HEADER_TRACE_INFO: | |
454c407e | 737 | trace_report(fd, false); |
37562eac ACM |
738 | break; |
739 | ||
740 | case HEADER_BUILD_ID: | |
ba21594c | 741 | if (perf_header__read_build_ids(ph, fd, self->offset, self->size)) |
37562eac ACM |
742 | pr_debug("Failed to read buildids, continuing...\n"); |
743 | break; | |
744 | default: | |
745 | pr_debug("unknown feature %d, continuing...\n", feat); | |
746 | } | |
747 | ||
748 | return 0; | |
749 | } | |
2ba08250 | 750 | |
8dc58101 | 751 | static int perf_file_header__read_pipe(struct perf_pipe_file_header *self, |
454c407e TZ |
752 | struct perf_header *ph, int fd, |
753 | bool repipe) | |
7c6a1c65 | 754 | { |
1e7972cc | 755 | if (readn(fd, self, sizeof(*self)) <= 0 || |
8dc58101 TZ |
756 | memcmp(&self->magic, __perf_magic, sizeof(self->magic))) |
757 | return -1; | |
758 | ||
454c407e TZ |
759 | if (repipe && do_write(STDOUT_FILENO, self, sizeof(*self)) < 0) |
760 | return -1; | |
761 | ||
8dc58101 TZ |
762 | if (self->size != sizeof(*self)) { |
763 | u64 size = bswap_64(self->size); | |
764 | ||
765 | if (size != sizeof(*self)) | |
766 | return -1; | |
767 | ||
768 | ph->needs_swap = true; | |
769 | } | |
770 | ||
771 | return 0; | |
772 | } | |
773 | ||
774 | static int perf_header__read_pipe(struct perf_session *session, int fd) | |
775 | { | |
776 | struct perf_header *self = &session->header; | |
777 | struct perf_pipe_file_header f_header; | |
778 | ||
454c407e TZ |
779 | if (perf_file_header__read_pipe(&f_header, self, fd, |
780 | session->repipe) < 0) { | |
8dc58101 TZ |
781 | pr_debug("incompatible file format\n"); |
782 | return -EINVAL; | |
783 | } | |
784 | ||
785 | session->fd = fd; | |
786 | ||
787 | return 0; | |
788 | } | |
789 | ||
a91e5431 | 790 | int perf_session__read_header(struct perf_session *session, int fd) |
8dc58101 TZ |
791 | { |
792 | struct perf_header *self = &session->header; | |
ba21594c | 793 | struct perf_file_header f_header; |
7c6a1c65 PZ |
794 | struct perf_file_attr f_attr; |
795 | u64 f_id; | |
7c6a1c65 PZ |
796 | int nr_attrs, nr_ids, i, j; |
797 | ||
a91e5431 ACM |
798 | session->evlist = perf_evlist__new(NULL, NULL); |
799 | if (session->evlist == NULL) | |
800 | return -ENOMEM; | |
801 | ||
8dc58101 TZ |
802 | if (session->fd_pipe) |
803 | return perf_header__read_pipe(session, fd); | |
804 | ||
4dc0a04b ACM |
805 | if (perf_file_header__read(&f_header, self, fd) < 0) { |
806 | pr_debug("incompatible file format\n"); | |
807 | return -EINVAL; | |
808 | } | |
7c6a1c65 PZ |
809 | |
810 | nr_attrs = f_header.attrs.size / sizeof(f_attr); | |
811 | lseek(fd, f_header.attrs.offset, SEEK_SET); | |
812 | ||
813 | for (i = 0; i < nr_attrs; i++) { | |
a91e5431 | 814 | struct perf_evsel *evsel; |
1c222bce | 815 | off_t tmp; |
7c6a1c65 | 816 | |
ba21594c | 817 | if (perf_header__getbuffer64(self, fd, &f_attr, sizeof(f_attr))) |
769885f3 | 818 | goto out_errno; |
ba21594c | 819 | |
1c222bce | 820 | tmp = lseek(fd, 0, SEEK_CUR); |
a91e5431 | 821 | evsel = perf_evsel__new(&f_attr.attr, i); |
7c6a1c65 | 822 | |
a91e5431 ACM |
823 | if (evsel == NULL) |
824 | goto out_delete_evlist; | |
825 | /* | |
826 | * Do it before so that if perf_evsel__alloc_id fails, this | |
827 | * entry gets purged too at perf_evlist__delete(). | |
828 | */ | |
829 | perf_evlist__add(session->evlist, evsel); | |
7c6a1c65 PZ |
830 | |
831 | nr_ids = f_attr.ids.size / sizeof(u64); | |
a91e5431 ACM |
832 | /* |
833 | * We don't have the cpu and thread maps on the header, so | |
834 | * for allocating the perf_sample_id table we fake 1 cpu and | |
835 | * hattr->ids threads. | |
836 | */ | |
837 | if (perf_evsel__alloc_id(evsel, 1, nr_ids)) | |
838 | goto out_delete_evlist; | |
839 | ||
7c6a1c65 PZ |
840 | lseek(fd, f_attr.ids.offset, SEEK_SET); |
841 | ||
842 | for (j = 0; j < nr_ids; j++) { | |
ba21594c | 843 | if (perf_header__getbuffer64(self, fd, &f_id, sizeof(f_id))) |
769885f3 | 844 | goto out_errno; |
7c6a1c65 | 845 | |
a91e5431 | 846 | perf_evlist__id_add(session->evlist, evsel, 0, j, f_id); |
7c6a1c65 | 847 | } |
11deb1f9 | 848 | |
7c6a1c65 PZ |
849 | lseek(fd, tmp, SEEK_SET); |
850 | } | |
851 | ||
8755a8f2 AV |
852 | if (f_header.event_types.size) { |
853 | lseek(fd, f_header.event_types.offset, SEEK_SET); | |
854 | events = malloc(f_header.event_types.size); | |
4dc0a04b ACM |
855 | if (events == NULL) |
856 | return -ENOMEM; | |
ba21594c ACM |
857 | if (perf_header__getbuffer64(self, fd, events, |
858 | f_header.event_types.size)) | |
769885f3 | 859 | goto out_errno; |
8755a8f2 AV |
860 | event_count = f_header.event_types.size / sizeof(struct perf_trace_event_type); |
861 | } | |
03456a15 | 862 | |
37562eac | 863 | perf_header__process_sections(self, fd, perf_file_section__process); |
4778d2e4 | 864 | |
2e01d179 | 865 | lseek(fd, self->data_offset, SEEK_SET); |
7c6a1c65 PZ |
866 | |
867 | self->frozen = 1; | |
4dc0a04b | 868 | return 0; |
769885f3 ACM |
869 | out_errno: |
870 | return -errno; | |
a91e5431 ACM |
871 | |
872 | out_delete_evlist: | |
873 | perf_evlist__delete(session->evlist); | |
874 | session->evlist = NULL; | |
875 | return -ENOMEM; | |
7c6a1c65 | 876 | } |
0d3a5c88 | 877 | |
a91e5431 | 878 | u64 perf_evlist__sample_type(struct perf_evlist *evlist) |
0d3a5c88 | 879 | { |
a91e5431 | 880 | struct perf_evsel *pos; |
0d3a5c88 | 881 | u64 type = 0; |
0d3a5c88 | 882 | |
a91e5431 | 883 | list_for_each_entry(pos, &evlist->entries, node) { |
0d3a5c88 | 884 | if (!type) |
a91e5431 ACM |
885 | type = pos->attr.sample_type; |
886 | else if (type != pos->attr.sample_type) | |
0d3a5c88 FW |
887 | die("non matching sample_type"); |
888 | } | |
889 | ||
890 | return type; | |
891 | } | |
892 | ||
a91e5431 | 893 | bool perf_evlist__sample_id_all(const struct perf_evlist *evlist) |
9c90a61c ACM |
894 | { |
895 | bool value = false, first = true; | |
a91e5431 | 896 | struct perf_evsel *pos; |
9c90a61c | 897 | |
a91e5431 | 898 | list_for_each_entry(pos, &evlist->entries, node) { |
9c90a61c | 899 | if (first) { |
a91e5431 | 900 | value = pos->attr.sample_id_all; |
9c90a61c | 901 | first = false; |
a91e5431 | 902 | } else if (value != pos->attr.sample_id_all) |
9c90a61c ACM |
903 | die("non matching sample_id_all"); |
904 | } | |
905 | ||
906 | return value; | |
907 | } | |
908 | ||
8115d60c ACM |
909 | int perf_event__synthesize_attr(struct perf_event_attr *attr, u16 ids, u64 *id, |
910 | perf_event__handler_t process, | |
911 | struct perf_session *session) | |
2c46dbb5 | 912 | { |
8115d60c | 913 | union perf_event *ev; |
2c46dbb5 TZ |
914 | size_t size; |
915 | int err; | |
916 | ||
917 | size = sizeof(struct perf_event_attr); | |
918 | size = ALIGN(size, sizeof(u64)); | |
919 | size += sizeof(struct perf_event_header); | |
920 | size += ids * sizeof(u64); | |
921 | ||
922 | ev = malloc(size); | |
923 | ||
ce47dc56 CS |
924 | if (ev == NULL) |
925 | return -ENOMEM; | |
926 | ||
2c46dbb5 TZ |
927 | ev->attr.attr = *attr; |
928 | memcpy(ev->attr.id, id, ids * sizeof(u64)); | |
929 | ||
930 | ev->attr.header.type = PERF_RECORD_HEADER_ATTR; | |
931 | ev->attr.header.size = size; | |
932 | ||
640c03ce | 933 | err = process(ev, NULL, session); |
2c46dbb5 TZ |
934 | |
935 | free(ev); | |
936 | ||
937 | return err; | |
938 | } | |
939 | ||
a91e5431 ACM |
940 | int perf_session__synthesize_attrs(struct perf_session *session, |
941 | perf_event__handler_t process) | |
2c46dbb5 | 942 | { |
a91e5431 ACM |
943 | struct perf_evsel *attr; |
944 | int err = 0; | |
2c46dbb5 | 945 | |
a91e5431 | 946 | list_for_each_entry(attr, &session->evlist->entries, node) { |
8115d60c ACM |
947 | err = perf_event__synthesize_attr(&attr->attr, attr->ids, |
948 | attr->id, process, session); | |
2c46dbb5 TZ |
949 | if (err) { |
950 | pr_debug("failed to create perf header attribute\n"); | |
951 | return err; | |
952 | } | |
953 | } | |
954 | ||
955 | return err; | |
956 | } | |
957 | ||
8115d60c ACM |
958 | int perf_event__process_attr(union perf_event *event, |
959 | struct perf_session *session) | |
2c46dbb5 | 960 | { |
2c46dbb5 | 961 | unsigned int i, ids, n_ids; |
a91e5431 | 962 | struct perf_evsel *evsel; |
2c46dbb5 | 963 | |
a91e5431 ACM |
964 | if (session->evlist == NULL) { |
965 | session->evlist = perf_evlist__new(NULL, NULL); | |
966 | if (session->evlist == NULL) | |
967 | return -ENOMEM; | |
968 | } | |
969 | ||
970 | evsel = perf_evsel__new(&event->attr.attr, | |
971 | session->evlist->nr_entries); | |
972 | if (evsel == NULL) | |
2c46dbb5 TZ |
973 | return -ENOMEM; |
974 | ||
a91e5431 ACM |
975 | perf_evlist__add(session->evlist, evsel); |
976 | ||
8115d60c ACM |
977 | ids = event->header.size; |
978 | ids -= (void *)&event->attr.id - (void *)event; | |
2c46dbb5 | 979 | n_ids = ids / sizeof(u64); |
a91e5431 ACM |
980 | /* |
981 | * We don't have the cpu and thread maps on the header, so | |
982 | * for allocating the perf_sample_id table we fake 1 cpu and | |
983 | * hattr->ids threads. | |
984 | */ | |
985 | if (perf_evsel__alloc_id(evsel, 1, n_ids)) | |
986 | return -ENOMEM; | |
2c46dbb5 TZ |
987 | |
988 | for (i = 0; i < n_ids; i++) { | |
a91e5431 ACM |
989 | perf_evlist__id_add(session->evlist, evsel, 0, i, |
990 | event->attr.id[i]); | |
2c46dbb5 TZ |
991 | } |
992 | ||
993 | perf_session__update_sample_type(session); | |
994 | ||
995 | return 0; | |
996 | } | |
cd19a035 | 997 | |
8115d60c ACM |
998 | int perf_event__synthesize_event_type(u64 event_id, char *name, |
999 | perf_event__handler_t process, | |
1000 | struct perf_session *session) | |
cd19a035 | 1001 | { |
8115d60c | 1002 | union perf_event ev; |
cd19a035 TZ |
1003 | size_t size = 0; |
1004 | int err = 0; | |
1005 | ||
1006 | memset(&ev, 0, sizeof(ev)); | |
1007 | ||
1008 | ev.event_type.event_type.event_id = event_id; | |
1009 | memset(ev.event_type.event_type.name, 0, MAX_EVENT_NAME); | |
1010 | strncpy(ev.event_type.event_type.name, name, MAX_EVENT_NAME - 1); | |
1011 | ||
1012 | ev.event_type.header.type = PERF_RECORD_HEADER_EVENT_TYPE; | |
1013 | size = strlen(name); | |
1014 | size = ALIGN(size, sizeof(u64)); | |
1015 | ev.event_type.header.size = sizeof(ev.event_type) - | |
1016 | (sizeof(ev.event_type.event_type.name) - size); | |
1017 | ||
640c03ce | 1018 | err = process(&ev, NULL, session); |
cd19a035 TZ |
1019 | |
1020 | return err; | |
1021 | } | |
1022 | ||
8115d60c ACM |
1023 | int perf_event__synthesize_event_types(perf_event__handler_t process, |
1024 | struct perf_session *session) | |
cd19a035 TZ |
1025 | { |
1026 | struct perf_trace_event_type *type; | |
1027 | int i, err = 0; | |
1028 | ||
1029 | for (i = 0; i < event_count; i++) { | |
1030 | type = &events[i]; | |
1031 | ||
8115d60c ACM |
1032 | err = perf_event__synthesize_event_type(type->event_id, |
1033 | type->name, process, | |
1034 | session); | |
cd19a035 TZ |
1035 | if (err) { |
1036 | pr_debug("failed to create perf header event type\n"); | |
1037 | return err; | |
1038 | } | |
1039 | } | |
1040 | ||
1041 | return err; | |
1042 | } | |
1043 | ||
8115d60c ACM |
1044 | int perf_event__process_event_type(union perf_event *event, |
1045 | struct perf_session *session __unused) | |
cd19a035 | 1046 | { |
8115d60c ACM |
1047 | if (perf_header__push_event(event->event_type.event_type.event_id, |
1048 | event->event_type.event_type.name) < 0) | |
cd19a035 TZ |
1049 | return -ENOMEM; |
1050 | ||
1051 | return 0; | |
1052 | } | |
9215545e | 1053 | |
8115d60c ACM |
1054 | int perf_event__synthesize_tracing_data(int fd, struct perf_evlist *evlist, |
1055 | perf_event__handler_t process, | |
9215545e TZ |
1056 | struct perf_session *session __unused) |
1057 | { | |
8115d60c | 1058 | union perf_event ev; |
9215545e | 1059 | ssize_t size = 0, aligned_size = 0, padding; |
fb7d0b3c | 1060 | int err __used = 0; |
9215545e TZ |
1061 | |
1062 | memset(&ev, 0, sizeof(ev)); | |
1063 | ||
1064 | ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA; | |
361c99a6 | 1065 | size = read_tracing_data_size(fd, &evlist->entries); |
9215545e TZ |
1066 | if (size <= 0) |
1067 | return size; | |
1068 | aligned_size = ALIGN(size, sizeof(u64)); | |
1069 | padding = aligned_size - size; | |
1070 | ev.tracing_data.header.size = sizeof(ev.tracing_data); | |
1071 | ev.tracing_data.size = aligned_size; | |
1072 | ||
640c03ce | 1073 | process(&ev, NULL, session); |
9215545e | 1074 | |
361c99a6 | 1075 | err = read_tracing_data(fd, &evlist->entries); |
9215545e TZ |
1076 | write_padded(fd, NULL, 0, padding); |
1077 | ||
1078 | return aligned_size; | |
1079 | } | |
1080 | ||
8115d60c ACM |
1081 | int perf_event__process_tracing_data(union perf_event *event, |
1082 | struct perf_session *session) | |
9215545e | 1083 | { |
8115d60c | 1084 | ssize_t size_read, padding, size = event->tracing_data.size; |
9215545e TZ |
1085 | off_t offset = lseek(session->fd, 0, SEEK_CUR); |
1086 | char buf[BUFSIZ]; | |
1087 | ||
1088 | /* setup for reading amidst mmap */ | |
1089 | lseek(session->fd, offset + sizeof(struct tracing_data_event), | |
1090 | SEEK_SET); | |
1091 | ||
454c407e | 1092 | size_read = trace_report(session->fd, session->repipe); |
9215545e TZ |
1093 | |
1094 | padding = ALIGN(size_read, sizeof(u64)) - size_read; | |
1095 | ||
1096 | if (read(session->fd, buf, padding) < 0) | |
1097 | die("reading input file"); | |
454c407e TZ |
1098 | if (session->repipe) { |
1099 | int retw = write(STDOUT_FILENO, buf, padding); | |
1100 | if (retw <= 0 || retw != padding) | |
1101 | die("repiping tracing data padding"); | |
1102 | } | |
9215545e TZ |
1103 | |
1104 | if (size_read + padding != size) | |
1105 | die("tracing data size mismatch"); | |
1106 | ||
1107 | return size_read + padding; | |
1108 | } | |
c7929e47 | 1109 | |
8115d60c ACM |
1110 | int perf_event__synthesize_build_id(struct dso *pos, u16 misc, |
1111 | perf_event__handler_t process, | |
1112 | struct machine *machine, | |
1113 | struct perf_session *session) | |
c7929e47 | 1114 | { |
8115d60c | 1115 | union perf_event ev; |
c7929e47 TZ |
1116 | size_t len; |
1117 | int err = 0; | |
1118 | ||
1119 | if (!pos->hit) | |
1120 | return err; | |
1121 | ||
1122 | memset(&ev, 0, sizeof(ev)); | |
1123 | ||
1124 | len = pos->long_name_len + 1; | |
1125 | len = ALIGN(len, NAME_ALIGN); | |
1126 | memcpy(&ev.build_id.build_id, pos->build_id, sizeof(pos->build_id)); | |
1127 | ev.build_id.header.type = PERF_RECORD_HEADER_BUILD_ID; | |
1128 | ev.build_id.header.misc = misc; | |
23346f21 | 1129 | ev.build_id.pid = machine->pid; |
c7929e47 TZ |
1130 | ev.build_id.header.size = sizeof(ev.build_id) + len; |
1131 | memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len); | |
1132 | ||
640c03ce | 1133 | err = process(&ev, NULL, session); |
c7929e47 TZ |
1134 | |
1135 | return err; | |
1136 | } | |
1137 | ||
8115d60c ACM |
1138 | int perf_event__process_build_id(union perf_event *event, |
1139 | struct perf_session *session) | |
c7929e47 | 1140 | { |
8115d60c ACM |
1141 | __event_process_build_id(&event->build_id, |
1142 | event->build_id.filename, | |
a1645ce1 | 1143 | session); |
c7929e47 TZ |
1144 | return 0; |
1145 | } | |
a1ac1d3c SE |
1146 | |
1147 | void disable_buildid_cache(void) | |
1148 | { | |
1149 | no_buildid_cache = true; | |
1150 | } |