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 | ||
1c0b04d1 | 69 | void perf_header__set_feat(struct perf_header *header, int feat) |
8d06367f | 70 | { |
1c0b04d1 | 71 | set_bit(feat, header->adds_features); |
8d06367f ACM |
72 | } |
73 | ||
1c0b04d1 | 74 | void perf_header__clear_feat(struct perf_header *header, int feat) |
baa2f6ce | 75 | { |
1c0b04d1 | 76 | clear_bit(feat, header->adds_features); |
baa2f6ce ACM |
77 | } |
78 | ||
1c0b04d1 | 79 | bool perf_header__has_feat(const struct perf_header *header, int feat) |
8d06367f | 80 | { |
1c0b04d1 | 81 | return test_bit(feat, header->adds_features); |
8d06367f ACM |
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 | ||
1c0b04d1 | 150 | static int machine__write_buildid_table(struct machine *machine, int fd) |
f869097e ACM |
151 | { |
152 | int err; | |
153 | u16 kmisc = PERF_RECORD_MISC_KERNEL, | |
154 | umisc = PERF_RECORD_MISC_USER; | |
155 | ||
1c0b04d1 | 156 | if (!machine__is_host(machine)) { |
f869097e ACM |
157 | kmisc = PERF_RECORD_MISC_GUEST_KERNEL; |
158 | umisc = PERF_RECORD_MISC_GUEST_USER; | |
159 | } | |
160 | ||
1c0b04d1 | 161 | err = __dsos__write_buildid_table(&machine->kernel_dsos, machine->pid, |
f869097e ACM |
162 | kmisc, fd); |
163 | if (err == 0) | |
1c0b04d1 ACM |
164 | err = __dsos__write_buildid_table(&machine->user_dsos, |
165 | machine->pid, umisc, fd); | |
f869097e ACM |
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; | |
7ee235ef | 192 | char *realname, *filename = malloc(size), |
ef12a141 | 193 | *linkname = malloc(size), *targetname; |
4cf40131 ACM |
194 | int len, err = -1; |
195 | ||
7ee235ef LM |
196 | if (is_kallsyms) |
197 | realname = (char *)name; | |
198 | else | |
199 | realname = realpath(name, NULL); | |
200 | ||
68a7a771 | 201 | if (realname == NULL || filename == NULL || linkname == NULL) |
4cf40131 ACM |
202 | goto out_free; |
203 | ||
9e201442 | 204 | len = snprintf(filename, size, "%s%s%s", |
68a7a771 | 205 | debugdir, is_kallsyms ? "/" : "", realname); |
4cf40131 ACM |
206 | if (mkdir_p(filename, 0755)) |
207 | goto out_free; | |
208 | ||
ef12a141 | 209 | snprintf(filename + len, sizeof(filename) - len, "/%s", sbuild_id); |
4cf40131 | 210 | |
9e201442 ACM |
211 | if (access(filename, F_OK)) { |
212 | if (is_kallsyms) { | |
213 | if (copyfile("/proc/kallsyms", filename)) | |
214 | goto out_free; | |
68a7a771 | 215 | } else if (link(realname, filename) && copyfile(name, filename)) |
9e201442 ACM |
216 | goto out_free; |
217 | } | |
4cf40131 ACM |
218 | |
219 | len = snprintf(linkname, size, "%s/.build-id/%.2s", | |
220 | debugdir, sbuild_id); | |
221 | ||
222 | if (access(linkname, X_OK) && mkdir_p(linkname, 0755)) | |
223 | goto out_free; | |
224 | ||
225 | snprintf(linkname + len, size - len, "/%s", sbuild_id + 2); | |
226 | targetname = filename + strlen(debugdir) - 5; | |
227 | memcpy(targetname, "../..", 5); | |
228 | ||
229 | if (symlink(targetname, linkname) == 0) | |
230 | err = 0; | |
231 | out_free: | |
7ee235ef LM |
232 | if (!is_kallsyms) |
233 | free(realname); | |
4cf40131 ACM |
234 | free(filename); |
235 | free(linkname); | |
236 | return err; | |
237 | } | |
238 | ||
ef12a141 ACM |
239 | static int build_id_cache__add_b(const u8 *build_id, size_t build_id_size, |
240 | const char *name, const char *debugdir, | |
241 | bool is_kallsyms) | |
242 | { | |
243 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; | |
244 | ||
245 | build_id__sprintf(build_id, build_id_size, sbuild_id); | |
246 | ||
247 | return build_id_cache__add_s(sbuild_id, debugdir, name, is_kallsyms); | |
248 | } | |
249 | ||
250 | int build_id_cache__remove_s(const char *sbuild_id, const char *debugdir) | |
251 | { | |
252 | const size_t size = PATH_MAX; | |
253 | char *filename = malloc(size), | |
254 | *linkname = malloc(size); | |
255 | int err = -1; | |
256 | ||
257 | if (filename == NULL || linkname == NULL) | |
258 | goto out_free; | |
259 | ||
260 | snprintf(linkname, size, "%s/.build-id/%.2s/%s", | |
261 | debugdir, sbuild_id, sbuild_id + 2); | |
262 | ||
263 | if (access(linkname, F_OK)) | |
264 | goto out_free; | |
265 | ||
266 | if (readlink(linkname, filename, size) < 0) | |
267 | goto out_free; | |
268 | ||
269 | if (unlink(linkname)) | |
270 | goto out_free; | |
271 | ||
272 | /* | |
273 | * Since the link is relative, we must make it absolute: | |
274 | */ | |
275 | snprintf(linkname, size, "%s/.build-id/%.2s/%s", | |
276 | debugdir, sbuild_id, filename); | |
277 | ||
278 | if (unlink(linkname)) | |
279 | goto out_free; | |
280 | ||
281 | err = 0; | |
282 | out_free: | |
283 | free(filename); | |
284 | free(linkname); | |
285 | return err; | |
286 | } | |
287 | ||
1c0b04d1 | 288 | static int dso__cache_build_id(struct dso *dso, const char *debugdir) |
ef12a141 | 289 | { |
1c0b04d1 | 290 | bool is_kallsyms = dso->kernel && dso->long_name[0] != '/'; |
ef12a141 | 291 | |
1c0b04d1 ACM |
292 | return build_id_cache__add_b(dso->build_id, sizeof(dso->build_id), |
293 | dso->long_name, debugdir, is_kallsyms); | |
ef12a141 ACM |
294 | } |
295 | ||
4cf40131 ACM |
296 | static int __dsos__cache_build_ids(struct list_head *head, const char *debugdir) |
297 | { | |
298 | struct dso *pos; | |
299 | int err = 0; | |
300 | ||
301 | dsos__for_each_with_build_id(pos, head) | |
302 | if (dso__cache_build_id(pos, debugdir)) | |
303 | err = -1; | |
304 | ||
305 | return err; | |
306 | } | |
307 | ||
1c0b04d1 | 308 | static int machine__cache_build_ids(struct machine *machine, const char *debugdir) |
f869097e | 309 | { |
1c0b04d1 ACM |
310 | int ret = __dsos__cache_build_ids(&machine->kernel_dsos, debugdir); |
311 | ret |= __dsos__cache_build_ids(&machine->user_dsos, debugdir); | |
f869097e ACM |
312 | return ret; |
313 | } | |
314 | ||
1c0b04d1 | 315 | static int perf_session__cache_build_ids(struct perf_session *session) |
4cf40131 | 316 | { |
a1645ce1 | 317 | struct rb_node *nd; |
f869097e | 318 | int ret; |
4cf40131 ACM |
319 | char debugdir[PATH_MAX]; |
320 | ||
45de34bb | 321 | snprintf(debugdir, sizeof(debugdir), "%s", buildid_dir); |
4cf40131 ACM |
322 | |
323 | if (mkdir(debugdir, 0755) != 0 && errno != EEXIST) | |
324 | return -1; | |
325 | ||
1c0b04d1 | 326 | ret = machine__cache_build_ids(&session->host_machine, debugdir); |
f869097e | 327 | |
1c0b04d1 | 328 | for (nd = rb_first(&session->machines); nd; nd = rb_next(nd)) { |
23346f21 | 329 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
f869097e | 330 | ret |= machine__cache_build_ids(pos, debugdir); |
a1645ce1 ZY |
331 | } |
332 | return ret ? -1 : 0; | |
333 | } | |
334 | ||
1c0b04d1 | 335 | static bool machine__read_build_ids(struct machine *machine, bool with_hits) |
f869097e | 336 | { |
1c0b04d1 ACM |
337 | bool ret = __dsos__read_build_ids(&machine->kernel_dsos, with_hits); |
338 | ret |= __dsos__read_build_ids(&machine->user_dsos, with_hits); | |
f869097e ACM |
339 | return ret; |
340 | } | |
341 | ||
1c0b04d1 | 342 | static bool perf_session__read_build_ids(struct perf_session *session, bool with_hits) |
a1645ce1 | 343 | { |
a1645ce1 | 344 | struct rb_node *nd; |
1c0b04d1 | 345 | bool ret = machine__read_build_ids(&session->host_machine, with_hits); |
a1645ce1 | 346 | |
1c0b04d1 | 347 | for (nd = rb_first(&session->machines); nd; nd = rb_next(nd)) { |
23346f21 | 348 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
f869097e | 349 | ret |= machine__read_build_ids(pos, with_hits); |
a1645ce1 ZY |
350 | } |
351 | ||
352 | return ret; | |
4cf40131 ACM |
353 | } |
354 | ||
1c0b04d1 | 355 | static int perf_header__adds_write(struct perf_header *header, |
361c99a6 | 356 | struct perf_evlist *evlist, int fd) |
2ba08250 | 357 | { |
9e827dd0 | 358 | int nr_sections; |
f869097e | 359 | struct perf_session *session; |
9e827dd0 FW |
360 | struct perf_file_section *feat_sec; |
361 | int sec_size; | |
362 | u64 sec_start; | |
d5eed904 | 363 | int idx = 0, err; |
9e827dd0 | 364 | |
1c0b04d1 | 365 | session = container_of(header, struct perf_session, header); |
baa2f6ce | 366 | |
1c0b04d1 | 367 | if (perf_header__has_feat(header, HEADER_BUILD_ID && |
baa2f6ce | 368 | !perf_session__read_build_ids(session, true))) |
1c0b04d1 | 369 | perf_header__clear_feat(header, HEADER_BUILD_ID); |
9e827dd0 | 370 | |
1c0b04d1 | 371 | nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS); |
9e827dd0 | 372 | if (!nr_sections) |
d5eed904 | 373 | return 0; |
9e827dd0 FW |
374 | |
375 | feat_sec = calloc(sizeof(*feat_sec), nr_sections); | |
d5eed904 ACM |
376 | if (feat_sec == NULL) |
377 | return -ENOMEM; | |
9e827dd0 FW |
378 | |
379 | sec_size = sizeof(*feat_sec) * nr_sections; | |
380 | ||
1c0b04d1 | 381 | sec_start = header->data_offset + header->data_size; |
f887f301 | 382 | lseek(fd, sec_start + sec_size, SEEK_SET); |
2ba08250 | 383 | |
1c0b04d1 | 384 | if (perf_header__has_feat(header, HEADER_TRACE_INFO)) { |
9e827dd0 FW |
385 | struct perf_file_section *trace_sec; |
386 | ||
387 | trace_sec = &feat_sec[idx++]; | |
388 | ||
2ba08250 | 389 | /* Write trace info */ |
f887f301 | 390 | trace_sec->offset = lseek(fd, 0, SEEK_CUR); |
361c99a6 | 391 | read_tracing_data(fd, &evlist->entries); |
f887f301 | 392 | trace_sec->size = lseek(fd, 0, SEEK_CUR) - trace_sec->offset; |
2ba08250 | 393 | } |
8671dab9 | 394 | |
1c0b04d1 | 395 | if (perf_header__has_feat(header, HEADER_BUILD_ID)) { |
9e827dd0 FW |
396 | struct perf_file_section *buildid_sec; |
397 | ||
398 | buildid_sec = &feat_sec[idx++]; | |
399 | ||
400 | /* Write build-ids */ | |
f887f301 | 401 | buildid_sec->offset = lseek(fd, 0, SEEK_CUR); |
1c0b04d1 | 402 | err = dsos__write_buildid_table(header, fd); |
d5eed904 ACM |
403 | if (err < 0) { |
404 | pr_debug("failed to write buildid table\n"); | |
405 | goto out_free; | |
406 | } | |
f887f301 XG |
407 | buildid_sec->size = lseek(fd, 0, SEEK_CUR) - |
408 | buildid_sec->offset; | |
a1ac1d3c SE |
409 | if (!no_buildid_cache) |
410 | perf_session__cache_build_ids(session); | |
8671dab9 | 411 | } |
9e827dd0 | 412 | |
f887f301 | 413 | lseek(fd, sec_start, SEEK_SET); |
d5eed904 ACM |
414 | err = do_write(fd, feat_sec, sec_size); |
415 | if (err < 0) | |
416 | pr_debug("failed to write feature section\n"); | |
417 | out_free: | |
9e827dd0 | 418 | free(feat_sec); |
d5eed904 | 419 | return err; |
9e827dd0 | 420 | } |
2ba08250 | 421 | |
8dc58101 TZ |
422 | int perf_header__write_pipe(int fd) |
423 | { | |
424 | struct perf_pipe_file_header f_header; | |
425 | int err; | |
426 | ||
427 | f_header = (struct perf_pipe_file_header){ | |
428 | .magic = PERF_MAGIC, | |
429 | .size = sizeof(f_header), | |
430 | }; | |
431 | ||
432 | err = do_write(fd, &f_header, sizeof(f_header)); | |
433 | if (err < 0) { | |
434 | pr_debug("failed to write perf pipe header\n"); | |
435 | return err; | |
436 | } | |
437 | ||
438 | return 0; | |
439 | } | |
440 | ||
a91e5431 ACM |
441 | int perf_session__write_header(struct perf_session *session, |
442 | struct perf_evlist *evlist, | |
443 | int fd, bool at_exit) | |
7c6a1c65 PZ |
444 | { |
445 | struct perf_file_header f_header; | |
446 | struct perf_file_attr f_attr; | |
1c0b04d1 | 447 | struct perf_header *header = &session->header; |
a91e5431 ACM |
448 | struct perf_evsel *attr, *pair = NULL; |
449 | int err; | |
7c6a1c65 PZ |
450 | |
451 | lseek(fd, sizeof(f_header), SEEK_SET); | |
452 | ||
a91e5431 ACM |
453 | if (session->evlist != evlist) |
454 | pair = list_entry(session->evlist->entries.next, struct perf_evsel, node); | |
7c6a1c65 | 455 | |
a91e5431 | 456 | list_for_each_entry(attr, &evlist->entries, node) { |
7c6a1c65 | 457 | attr->id_offset = lseek(fd, 0, SEEK_CUR); |
d5eed904 ACM |
458 | err = do_write(fd, attr->id, attr->ids * sizeof(u64)); |
459 | if (err < 0) { | |
a91e5431 | 460 | out_err_write: |
d5eed904 ACM |
461 | pr_debug("failed to write perf header\n"); |
462 | return err; | |
463 | } | |
a91e5431 ACM |
464 | if (session->evlist != evlist) { |
465 | err = do_write(fd, pair->id, pair->ids * sizeof(u64)); | |
466 | if (err < 0) | |
467 | goto out_err_write; | |
468 | attr->ids += pair->ids; | |
469 | pair = list_entry(pair->node.next, struct perf_evsel, node); | |
470 | } | |
7c6a1c65 PZ |
471 | } |
472 | ||
1c0b04d1 | 473 | header->attr_offset = lseek(fd, 0, SEEK_CUR); |
7c6a1c65 | 474 | |
a91e5431 | 475 | list_for_each_entry(attr, &evlist->entries, node) { |
7c6a1c65 PZ |
476 | f_attr = (struct perf_file_attr){ |
477 | .attr = attr->attr, | |
478 | .ids = { | |
479 | .offset = attr->id_offset, | |
480 | .size = attr->ids * sizeof(u64), | |
481 | } | |
482 | }; | |
d5eed904 ACM |
483 | err = do_write(fd, &f_attr, sizeof(f_attr)); |
484 | if (err < 0) { | |
485 | pr_debug("failed to write perf header attribute\n"); | |
486 | return err; | |
487 | } | |
7c6a1c65 PZ |
488 | } |
489 | ||
1c0b04d1 ACM |
490 | header->event_offset = lseek(fd, 0, SEEK_CUR); |
491 | header->event_size = event_count * sizeof(struct perf_trace_event_type); | |
d5eed904 | 492 | if (events) { |
1c0b04d1 | 493 | err = do_write(fd, events, header->event_size); |
d5eed904 ACM |
494 | if (err < 0) { |
495 | pr_debug("failed to write perf header events\n"); | |
496 | return err; | |
497 | } | |
498 | } | |
8755a8f2 | 499 | |
1c0b04d1 | 500 | header->data_offset = lseek(fd, 0, SEEK_CUR); |
7c6a1c65 | 501 | |
d5eed904 | 502 | if (at_exit) { |
1c0b04d1 | 503 | err = perf_header__adds_write(header, evlist, fd); |
d5eed904 ACM |
504 | if (err < 0) |
505 | return err; | |
506 | } | |
9e827dd0 | 507 | |
7c6a1c65 PZ |
508 | f_header = (struct perf_file_header){ |
509 | .magic = PERF_MAGIC, | |
510 | .size = sizeof(f_header), | |
511 | .attr_size = sizeof(f_attr), | |
512 | .attrs = { | |
1c0b04d1 | 513 | .offset = header->attr_offset, |
a91e5431 | 514 | .size = evlist->nr_entries * sizeof(f_attr), |
7c6a1c65 PZ |
515 | }, |
516 | .data = { | |
1c0b04d1 ACM |
517 | .offset = header->data_offset, |
518 | .size = header->data_size, | |
7c6a1c65 | 519 | }, |
8755a8f2 | 520 | .event_types = { |
1c0b04d1 ACM |
521 | .offset = header->event_offset, |
522 | .size = header->event_size, | |
8755a8f2 | 523 | }, |
7c6a1c65 PZ |
524 | }; |
525 | ||
1c0b04d1 | 526 | memcpy(&f_header.adds_features, &header->adds_features, sizeof(header->adds_features)); |
2ba08250 | 527 | |
7c6a1c65 | 528 | lseek(fd, 0, SEEK_SET); |
d5eed904 ACM |
529 | err = do_write(fd, &f_header, sizeof(f_header)); |
530 | if (err < 0) { | |
531 | pr_debug("failed to write perf header\n"); | |
532 | return err; | |
533 | } | |
1c0b04d1 | 534 | lseek(fd, header->data_offset + header->data_size, SEEK_SET); |
7c6a1c65 | 535 | |
1c0b04d1 | 536 | header->frozen = 1; |
d5eed904 | 537 | return 0; |
7c6a1c65 PZ |
538 | } |
539 | ||
1c0b04d1 | 540 | static int perf_header__getbuffer64(struct perf_header *header, |
ba21594c ACM |
541 | int fd, void *buf, size_t size) |
542 | { | |
1e7972cc | 543 | if (readn(fd, buf, size) <= 0) |
ba21594c ACM |
544 | return -1; |
545 | ||
1c0b04d1 | 546 | if (header->needs_swap) |
ba21594c ACM |
547 | mem_bswap_64(buf, size); |
548 | ||
549 | return 0; | |
550 | } | |
551 | ||
1c0b04d1 ACM |
552 | int perf_header__process_sections(struct perf_header *header, int fd, |
553 | int (*process)(struct perf_file_section *section, | |
ba21594c | 554 | struct perf_header *ph, |
37562eac | 555 | int feat, int fd)) |
2ba08250 | 556 | { |
9e827dd0 FW |
557 | struct perf_file_section *feat_sec; |
558 | int nr_sections; | |
559 | int sec_size; | |
560 | int idx = 0; | |
769885f3 | 561 | int err = -1, feat = 1; |
9e827dd0 | 562 | |
1c0b04d1 | 563 | nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS); |
9e827dd0 | 564 | if (!nr_sections) |
37562eac | 565 | return 0; |
9e827dd0 FW |
566 | |
567 | feat_sec = calloc(sizeof(*feat_sec), nr_sections); | |
568 | if (!feat_sec) | |
37562eac | 569 | return -1; |
9e827dd0 FW |
570 | |
571 | sec_size = sizeof(*feat_sec) * nr_sections; | |
572 | ||
1c0b04d1 | 573 | lseek(fd, header->data_offset + header->data_size, SEEK_SET); |
9e827dd0 | 574 | |
1c0b04d1 | 575 | if (perf_header__getbuffer64(header, fd, feat_sec, sec_size)) |
769885f3 | 576 | goto out_free; |
9e827dd0 | 577 | |
769885f3 | 578 | err = 0; |
37562eac | 579 | while (idx < nr_sections && feat < HEADER_LAST_FEATURE) { |
1c0b04d1 | 580 | if (perf_header__has_feat(header, feat)) { |
37562eac | 581 | struct perf_file_section *sec = &feat_sec[idx++]; |
2ba08250 | 582 | |
1c0b04d1 | 583 | err = process(sec, header, feat, fd); |
37562eac ACM |
584 | if (err < 0) |
585 | break; | |
586 | } | |
587 | ++feat; | |
2ba08250 | 588 | } |
769885f3 | 589 | out_free: |
37562eac ACM |
590 | free(feat_sec); |
591 | return err; | |
769885f3 | 592 | } |
4778d2e4 | 593 | |
1c0b04d1 | 594 | int perf_file_header__read(struct perf_file_header *header, |
37562eac ACM |
595 | struct perf_header *ph, int fd) |
596 | { | |
597 | lseek(fd, 0, SEEK_SET); | |
37562eac | 598 | |
1c0b04d1 ACM |
599 | if (readn(fd, header, sizeof(*header)) <= 0 || |
600 | memcmp(&header->magic, __perf_magic, sizeof(header->magic))) | |
37562eac ACM |
601 | return -1; |
602 | ||
1c0b04d1 ACM |
603 | if (header->attr_size != sizeof(struct perf_file_attr)) { |
604 | u64 attr_size = bswap_64(header->attr_size); | |
ba21594c ACM |
605 | |
606 | if (attr_size != sizeof(struct perf_file_attr)) | |
607 | return -1; | |
608 | ||
1c0b04d1 | 609 | mem_bswap_64(header, offsetof(struct perf_file_header, |
ba21594c ACM |
610 | adds_features)); |
611 | ph->needs_swap = true; | |
612 | } | |
613 | ||
1c0b04d1 | 614 | if (header->size != sizeof(*header)) { |
37562eac | 615 | /* Support the previous format */ |
1c0b04d1 ACM |
616 | if (header->size == offsetof(typeof(*header), adds_features)) |
617 | bitmap_zero(header->adds_features, HEADER_FEAT_BITS); | |
37562eac ACM |
618 | else |
619 | return -1; | |
4778d2e4 | 620 | } |
9e827dd0 | 621 | |
1c0b04d1 | 622 | memcpy(&ph->adds_features, &header->adds_features, |
ba21594c ACM |
623 | sizeof(ph->adds_features)); |
624 | /* | |
625 | * FIXME: hack that assumes that if we need swap the perf.data file | |
626 | * may be coming from an arch with a different word-size, ergo different | |
627 | * DEFINE_BITMAP format, investigate more later, but for now its mostly | |
628 | * safe to assume that we have a build-id section. Trace files probably | |
629 | * have several other issues in this realm anyway... | |
630 | */ | |
631 | if (ph->needs_swap) { | |
632 | memset(&ph->adds_features, 0, sizeof(ph->adds_features)); | |
633 | perf_header__set_feat(ph, HEADER_BUILD_ID); | |
634 | } | |
37562eac | 635 | |
1c0b04d1 ACM |
636 | ph->event_offset = header->event_types.offset; |
637 | ph->event_size = header->event_types.size; | |
638 | ph->data_offset = header->data.offset; | |
639 | ph->data_size = header->data.size; | |
37562eac ACM |
640 | return 0; |
641 | } | |
642 | ||
a1645ce1 ZY |
643 | static int __event_process_build_id(struct build_id_event *bev, |
644 | char *filename, | |
645 | struct perf_session *session) | |
646 | { | |
647 | int err = -1; | |
648 | struct list_head *head; | |
23346f21 | 649 | struct machine *machine; |
a1645ce1 ZY |
650 | u16 misc; |
651 | struct dso *dso; | |
652 | enum dso_kernel_type dso_type; | |
653 | ||
23346f21 ACM |
654 | machine = perf_session__findnew_machine(session, bev->pid); |
655 | if (!machine) | |
a1645ce1 ZY |
656 | goto out; |
657 | ||
658 | misc = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
659 | ||
660 | switch (misc) { | |
661 | case PERF_RECORD_MISC_KERNEL: | |
662 | dso_type = DSO_TYPE_KERNEL; | |
23346f21 | 663 | head = &machine->kernel_dsos; |
a1645ce1 ZY |
664 | break; |
665 | case PERF_RECORD_MISC_GUEST_KERNEL: | |
666 | dso_type = DSO_TYPE_GUEST_KERNEL; | |
23346f21 | 667 | head = &machine->kernel_dsos; |
a1645ce1 ZY |
668 | break; |
669 | case PERF_RECORD_MISC_USER: | |
670 | case PERF_RECORD_MISC_GUEST_USER: | |
671 | dso_type = DSO_TYPE_USER; | |
23346f21 | 672 | head = &machine->user_dsos; |
a1645ce1 ZY |
673 | break; |
674 | default: | |
675 | goto out; | |
676 | } | |
677 | ||
678 | dso = __dsos__findnew(head, filename); | |
679 | if (dso != NULL) { | |
454c407e TZ |
680 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; |
681 | ||
a1645ce1 | 682 | dso__set_build_id(dso, &bev->build_id); |
454c407e TZ |
683 | |
684 | if (filename[0] == '[') | |
685 | dso->kernel = dso_type; | |
686 | ||
687 | build_id__sprintf(dso->build_id, sizeof(dso->build_id), | |
688 | sbuild_id); | |
689 | pr_debug("build id event received for %s: %s\n", | |
690 | dso->long_name, sbuild_id); | |
691 | } | |
a1645ce1 ZY |
692 | |
693 | err = 0; | |
694 | out: | |
695 | return err; | |
696 | } | |
697 | ||
1c0b04d1 ACM |
698 | static int perf_header__read_build_ids(struct perf_header *header, |
699 | int input, u64 offset, u64 size) | |
a1645ce1 | 700 | { |
1c0b04d1 | 701 | struct perf_session *session = container_of(header, struct perf_session, header); |
a1645ce1 ZY |
702 | struct build_id_event bev; |
703 | char filename[PATH_MAX]; | |
704 | u64 limit = offset + size; | |
705 | int err = -1; | |
706 | ||
707 | while (offset < limit) { | |
708 | ssize_t len; | |
709 | ||
710 | if (read(input, &bev, sizeof(bev)) != sizeof(bev)) | |
711 | goto out; | |
712 | ||
1c0b04d1 | 713 | if (header->needs_swap) |
a1645ce1 ZY |
714 | perf_event_header__bswap(&bev.header); |
715 | ||
716 | len = bev.header.size - sizeof(bev); | |
717 | if (read(input, filename, len) != len) | |
718 | goto out; | |
719 | ||
720 | __event_process_build_id(&bev, filename, session); | |
721 | ||
722 | offset += bev.header.size; | |
723 | } | |
724 | err = 0; | |
725 | out: | |
726 | return err; | |
727 | } | |
728 | ||
1c0b04d1 | 729 | static int perf_file_section__process(struct perf_file_section *section, |
ba21594c | 730 | struct perf_header *ph, |
37562eac ACM |
731 | int feat, int fd) |
732 | { | |
1c0b04d1 | 733 | if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) { |
9486aa38 | 734 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " |
1c0b04d1 | 735 | "%d, continuing...\n", section->offset, feat); |
37562eac ACM |
736 | return 0; |
737 | } | |
738 | ||
739 | switch (feat) { | |
740 | case HEADER_TRACE_INFO: | |
454c407e | 741 | trace_report(fd, false); |
37562eac ACM |
742 | break; |
743 | ||
744 | case HEADER_BUILD_ID: | |
1c0b04d1 | 745 | if (perf_header__read_build_ids(ph, fd, section->offset, section->size)) |
37562eac ACM |
746 | pr_debug("Failed to read buildids, continuing...\n"); |
747 | break; | |
748 | default: | |
749 | pr_debug("unknown feature %d, continuing...\n", feat); | |
750 | } | |
751 | ||
752 | return 0; | |
753 | } | |
2ba08250 | 754 | |
1c0b04d1 | 755 | static int perf_file_header__read_pipe(struct perf_pipe_file_header *header, |
454c407e TZ |
756 | struct perf_header *ph, int fd, |
757 | bool repipe) | |
7c6a1c65 | 758 | { |
1c0b04d1 ACM |
759 | if (readn(fd, header, sizeof(*header)) <= 0 || |
760 | memcmp(&header->magic, __perf_magic, sizeof(header->magic))) | |
8dc58101 TZ |
761 | return -1; |
762 | ||
1c0b04d1 | 763 | if (repipe && do_write(STDOUT_FILENO, header, sizeof(*header)) < 0) |
454c407e TZ |
764 | return -1; |
765 | ||
1c0b04d1 ACM |
766 | if (header->size != sizeof(*header)) { |
767 | u64 size = bswap_64(header->size); | |
8dc58101 | 768 | |
1c0b04d1 | 769 | if (size != sizeof(*header)) |
8dc58101 TZ |
770 | return -1; |
771 | ||
772 | ph->needs_swap = true; | |
773 | } | |
774 | ||
775 | return 0; | |
776 | } | |
777 | ||
778 | static int perf_header__read_pipe(struct perf_session *session, int fd) | |
779 | { | |
1c0b04d1 | 780 | struct perf_header *header = &session->header; |
8dc58101 TZ |
781 | struct perf_pipe_file_header f_header; |
782 | ||
1c0b04d1 | 783 | if (perf_file_header__read_pipe(&f_header, header, fd, |
454c407e | 784 | session->repipe) < 0) { |
8dc58101 TZ |
785 | pr_debug("incompatible file format\n"); |
786 | return -EINVAL; | |
787 | } | |
788 | ||
789 | session->fd = fd; | |
790 | ||
791 | return 0; | |
792 | } | |
793 | ||
a91e5431 | 794 | int perf_session__read_header(struct perf_session *session, int fd) |
8dc58101 | 795 | { |
1c0b04d1 | 796 | struct perf_header *header = &session->header; |
ba21594c | 797 | struct perf_file_header f_header; |
7c6a1c65 PZ |
798 | struct perf_file_attr f_attr; |
799 | u64 f_id; | |
7c6a1c65 PZ |
800 | int nr_attrs, nr_ids, i, j; |
801 | ||
a91e5431 ACM |
802 | session->evlist = perf_evlist__new(NULL, NULL); |
803 | if (session->evlist == NULL) | |
804 | return -ENOMEM; | |
805 | ||
8dc58101 TZ |
806 | if (session->fd_pipe) |
807 | return perf_header__read_pipe(session, fd); | |
808 | ||
1c0b04d1 | 809 | if (perf_file_header__read(&f_header, header, fd) < 0) { |
4dc0a04b ACM |
810 | pr_debug("incompatible file format\n"); |
811 | return -EINVAL; | |
812 | } | |
7c6a1c65 PZ |
813 | |
814 | nr_attrs = f_header.attrs.size / sizeof(f_attr); | |
815 | lseek(fd, f_header.attrs.offset, SEEK_SET); | |
816 | ||
817 | for (i = 0; i < nr_attrs; i++) { | |
a91e5431 | 818 | struct perf_evsel *evsel; |
1c222bce | 819 | off_t tmp; |
7c6a1c65 | 820 | |
1c0b04d1 | 821 | if (perf_header__getbuffer64(header, fd, &f_attr, sizeof(f_attr))) |
769885f3 | 822 | goto out_errno; |
ba21594c | 823 | |
1c222bce | 824 | tmp = lseek(fd, 0, SEEK_CUR); |
a91e5431 | 825 | evsel = perf_evsel__new(&f_attr.attr, i); |
7c6a1c65 | 826 | |
a91e5431 ACM |
827 | if (evsel == NULL) |
828 | goto out_delete_evlist; | |
829 | /* | |
830 | * Do it before so that if perf_evsel__alloc_id fails, this | |
831 | * entry gets purged too at perf_evlist__delete(). | |
832 | */ | |
833 | perf_evlist__add(session->evlist, evsel); | |
7c6a1c65 PZ |
834 | |
835 | nr_ids = f_attr.ids.size / sizeof(u64); | |
a91e5431 ACM |
836 | /* |
837 | * We don't have the cpu and thread maps on the header, so | |
838 | * for allocating the perf_sample_id table we fake 1 cpu and | |
839 | * hattr->ids threads. | |
840 | */ | |
841 | if (perf_evsel__alloc_id(evsel, 1, nr_ids)) | |
842 | goto out_delete_evlist; | |
843 | ||
7c6a1c65 PZ |
844 | lseek(fd, f_attr.ids.offset, SEEK_SET); |
845 | ||
846 | for (j = 0; j < nr_ids; j++) { | |
1c0b04d1 | 847 | if (perf_header__getbuffer64(header, fd, &f_id, sizeof(f_id))) |
769885f3 | 848 | goto out_errno; |
7c6a1c65 | 849 | |
a91e5431 | 850 | perf_evlist__id_add(session->evlist, evsel, 0, j, f_id); |
7c6a1c65 | 851 | } |
11deb1f9 | 852 | |
7c6a1c65 PZ |
853 | lseek(fd, tmp, SEEK_SET); |
854 | } | |
855 | ||
8755a8f2 AV |
856 | if (f_header.event_types.size) { |
857 | lseek(fd, f_header.event_types.offset, SEEK_SET); | |
858 | events = malloc(f_header.event_types.size); | |
4dc0a04b ACM |
859 | if (events == NULL) |
860 | return -ENOMEM; | |
1c0b04d1 | 861 | if (perf_header__getbuffer64(header, fd, events, |
ba21594c | 862 | f_header.event_types.size)) |
769885f3 | 863 | goto out_errno; |
8755a8f2 AV |
864 | event_count = f_header.event_types.size / sizeof(struct perf_trace_event_type); |
865 | } | |
03456a15 | 866 | |
1c0b04d1 | 867 | perf_header__process_sections(header, fd, perf_file_section__process); |
4778d2e4 | 868 | |
1c0b04d1 | 869 | lseek(fd, header->data_offset, SEEK_SET); |
7c6a1c65 | 870 | |
1c0b04d1 | 871 | header->frozen = 1; |
4dc0a04b | 872 | return 0; |
769885f3 ACM |
873 | out_errno: |
874 | return -errno; | |
a91e5431 ACM |
875 | |
876 | out_delete_evlist: | |
877 | perf_evlist__delete(session->evlist); | |
878 | session->evlist = NULL; | |
879 | return -ENOMEM; | |
7c6a1c65 | 880 | } |
0d3a5c88 | 881 | |
a91e5431 | 882 | u64 perf_evlist__sample_type(struct perf_evlist *evlist) |
0d3a5c88 | 883 | { |
a91e5431 | 884 | struct perf_evsel *pos; |
0d3a5c88 | 885 | u64 type = 0; |
0d3a5c88 | 886 | |
a91e5431 | 887 | list_for_each_entry(pos, &evlist->entries, node) { |
0d3a5c88 | 888 | if (!type) |
a91e5431 ACM |
889 | type = pos->attr.sample_type; |
890 | else if (type != pos->attr.sample_type) | |
0d3a5c88 FW |
891 | die("non matching sample_type"); |
892 | } | |
893 | ||
894 | return type; | |
895 | } | |
896 | ||
a91e5431 | 897 | bool perf_evlist__sample_id_all(const struct perf_evlist *evlist) |
9c90a61c ACM |
898 | { |
899 | bool value = false, first = true; | |
a91e5431 | 900 | struct perf_evsel *pos; |
9c90a61c | 901 | |
a91e5431 | 902 | list_for_each_entry(pos, &evlist->entries, node) { |
9c90a61c | 903 | if (first) { |
a91e5431 | 904 | value = pos->attr.sample_id_all; |
9c90a61c | 905 | first = false; |
a91e5431 | 906 | } else if (value != pos->attr.sample_id_all) |
9c90a61c ACM |
907 | die("non matching sample_id_all"); |
908 | } | |
909 | ||
910 | return value; | |
911 | } | |
912 | ||
8115d60c ACM |
913 | int perf_event__synthesize_attr(struct perf_event_attr *attr, u16 ids, u64 *id, |
914 | perf_event__handler_t process, | |
915 | struct perf_session *session) | |
2c46dbb5 | 916 | { |
8115d60c | 917 | union perf_event *ev; |
2c46dbb5 TZ |
918 | size_t size; |
919 | int err; | |
920 | ||
921 | size = sizeof(struct perf_event_attr); | |
922 | size = ALIGN(size, sizeof(u64)); | |
923 | size += sizeof(struct perf_event_header); | |
924 | size += ids * sizeof(u64); | |
925 | ||
926 | ev = malloc(size); | |
927 | ||
ce47dc56 CS |
928 | if (ev == NULL) |
929 | return -ENOMEM; | |
930 | ||
2c46dbb5 TZ |
931 | ev->attr.attr = *attr; |
932 | memcpy(ev->attr.id, id, ids * sizeof(u64)); | |
933 | ||
934 | ev->attr.header.type = PERF_RECORD_HEADER_ATTR; | |
935 | ev->attr.header.size = size; | |
936 | ||
640c03ce | 937 | err = process(ev, NULL, session); |
2c46dbb5 TZ |
938 | |
939 | free(ev); | |
940 | ||
941 | return err; | |
942 | } | |
943 | ||
a91e5431 ACM |
944 | int perf_session__synthesize_attrs(struct perf_session *session, |
945 | perf_event__handler_t process) | |
2c46dbb5 | 946 | { |
a91e5431 ACM |
947 | struct perf_evsel *attr; |
948 | int err = 0; | |
2c46dbb5 | 949 | |
a91e5431 | 950 | list_for_each_entry(attr, &session->evlist->entries, node) { |
8115d60c ACM |
951 | err = perf_event__synthesize_attr(&attr->attr, attr->ids, |
952 | attr->id, process, session); | |
2c46dbb5 TZ |
953 | if (err) { |
954 | pr_debug("failed to create perf header attribute\n"); | |
955 | return err; | |
956 | } | |
957 | } | |
958 | ||
959 | return err; | |
960 | } | |
961 | ||
8115d60c ACM |
962 | int perf_event__process_attr(union perf_event *event, |
963 | struct perf_session *session) | |
2c46dbb5 | 964 | { |
2c46dbb5 | 965 | unsigned int i, ids, n_ids; |
a91e5431 | 966 | struct perf_evsel *evsel; |
2c46dbb5 | 967 | |
a91e5431 ACM |
968 | if (session->evlist == NULL) { |
969 | session->evlist = perf_evlist__new(NULL, NULL); | |
970 | if (session->evlist == NULL) | |
971 | return -ENOMEM; | |
972 | } | |
973 | ||
974 | evsel = perf_evsel__new(&event->attr.attr, | |
975 | session->evlist->nr_entries); | |
976 | if (evsel == NULL) | |
2c46dbb5 TZ |
977 | return -ENOMEM; |
978 | ||
a91e5431 ACM |
979 | perf_evlist__add(session->evlist, evsel); |
980 | ||
8115d60c ACM |
981 | ids = event->header.size; |
982 | ids -= (void *)&event->attr.id - (void *)event; | |
2c46dbb5 | 983 | n_ids = ids / sizeof(u64); |
a91e5431 ACM |
984 | /* |
985 | * We don't have the cpu and thread maps on the header, so | |
986 | * for allocating the perf_sample_id table we fake 1 cpu and | |
987 | * hattr->ids threads. | |
988 | */ | |
989 | if (perf_evsel__alloc_id(evsel, 1, n_ids)) | |
990 | return -ENOMEM; | |
2c46dbb5 TZ |
991 | |
992 | for (i = 0; i < n_ids; i++) { | |
a91e5431 ACM |
993 | perf_evlist__id_add(session->evlist, evsel, 0, i, |
994 | event->attr.id[i]); | |
2c46dbb5 TZ |
995 | } |
996 | ||
997 | perf_session__update_sample_type(session); | |
998 | ||
999 | return 0; | |
1000 | } | |
cd19a035 | 1001 | |
8115d60c ACM |
1002 | int perf_event__synthesize_event_type(u64 event_id, char *name, |
1003 | perf_event__handler_t process, | |
1004 | struct perf_session *session) | |
cd19a035 | 1005 | { |
8115d60c | 1006 | union perf_event ev; |
cd19a035 TZ |
1007 | size_t size = 0; |
1008 | int err = 0; | |
1009 | ||
1010 | memset(&ev, 0, sizeof(ev)); | |
1011 | ||
1012 | ev.event_type.event_type.event_id = event_id; | |
1013 | memset(ev.event_type.event_type.name, 0, MAX_EVENT_NAME); | |
1014 | strncpy(ev.event_type.event_type.name, name, MAX_EVENT_NAME - 1); | |
1015 | ||
1016 | ev.event_type.header.type = PERF_RECORD_HEADER_EVENT_TYPE; | |
1017 | size = strlen(name); | |
1018 | size = ALIGN(size, sizeof(u64)); | |
1019 | ev.event_type.header.size = sizeof(ev.event_type) - | |
1020 | (sizeof(ev.event_type.event_type.name) - size); | |
1021 | ||
640c03ce | 1022 | err = process(&ev, NULL, session); |
cd19a035 TZ |
1023 | |
1024 | return err; | |
1025 | } | |
1026 | ||
8115d60c ACM |
1027 | int perf_event__synthesize_event_types(perf_event__handler_t process, |
1028 | struct perf_session *session) | |
cd19a035 TZ |
1029 | { |
1030 | struct perf_trace_event_type *type; | |
1031 | int i, err = 0; | |
1032 | ||
1033 | for (i = 0; i < event_count; i++) { | |
1034 | type = &events[i]; | |
1035 | ||
8115d60c ACM |
1036 | err = perf_event__synthesize_event_type(type->event_id, |
1037 | type->name, process, | |
1038 | session); | |
cd19a035 TZ |
1039 | if (err) { |
1040 | pr_debug("failed to create perf header event type\n"); | |
1041 | return err; | |
1042 | } | |
1043 | } | |
1044 | ||
1045 | return err; | |
1046 | } | |
1047 | ||
8115d60c ACM |
1048 | int perf_event__process_event_type(union perf_event *event, |
1049 | struct perf_session *session __unused) | |
cd19a035 | 1050 | { |
8115d60c ACM |
1051 | if (perf_header__push_event(event->event_type.event_type.event_id, |
1052 | event->event_type.event_type.name) < 0) | |
cd19a035 TZ |
1053 | return -ENOMEM; |
1054 | ||
1055 | return 0; | |
1056 | } | |
9215545e | 1057 | |
8115d60c ACM |
1058 | int perf_event__synthesize_tracing_data(int fd, struct perf_evlist *evlist, |
1059 | perf_event__handler_t process, | |
9215545e TZ |
1060 | struct perf_session *session __unused) |
1061 | { | |
8115d60c | 1062 | union perf_event ev; |
9215545e | 1063 | ssize_t size = 0, aligned_size = 0, padding; |
fb7d0b3c | 1064 | int err __used = 0; |
9215545e TZ |
1065 | |
1066 | memset(&ev, 0, sizeof(ev)); | |
1067 | ||
1068 | ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA; | |
361c99a6 | 1069 | size = read_tracing_data_size(fd, &evlist->entries); |
9215545e TZ |
1070 | if (size <= 0) |
1071 | return size; | |
1072 | aligned_size = ALIGN(size, sizeof(u64)); | |
1073 | padding = aligned_size - size; | |
1074 | ev.tracing_data.header.size = sizeof(ev.tracing_data); | |
1075 | ev.tracing_data.size = aligned_size; | |
1076 | ||
640c03ce | 1077 | process(&ev, NULL, session); |
9215545e | 1078 | |
361c99a6 | 1079 | err = read_tracing_data(fd, &evlist->entries); |
9215545e TZ |
1080 | write_padded(fd, NULL, 0, padding); |
1081 | ||
1082 | return aligned_size; | |
1083 | } | |
1084 | ||
8115d60c ACM |
1085 | int perf_event__process_tracing_data(union perf_event *event, |
1086 | struct perf_session *session) | |
9215545e | 1087 | { |
8115d60c | 1088 | ssize_t size_read, padding, size = event->tracing_data.size; |
9215545e TZ |
1089 | off_t offset = lseek(session->fd, 0, SEEK_CUR); |
1090 | char buf[BUFSIZ]; | |
1091 | ||
1092 | /* setup for reading amidst mmap */ | |
1093 | lseek(session->fd, offset + sizeof(struct tracing_data_event), | |
1094 | SEEK_SET); | |
1095 | ||
454c407e | 1096 | size_read = trace_report(session->fd, session->repipe); |
9215545e TZ |
1097 | |
1098 | padding = ALIGN(size_read, sizeof(u64)) - size_read; | |
1099 | ||
1100 | if (read(session->fd, buf, padding) < 0) | |
1101 | die("reading input file"); | |
454c407e TZ |
1102 | if (session->repipe) { |
1103 | int retw = write(STDOUT_FILENO, buf, padding); | |
1104 | if (retw <= 0 || retw != padding) | |
1105 | die("repiping tracing data padding"); | |
1106 | } | |
9215545e TZ |
1107 | |
1108 | if (size_read + padding != size) | |
1109 | die("tracing data size mismatch"); | |
1110 | ||
1111 | return size_read + padding; | |
1112 | } | |
c7929e47 | 1113 | |
8115d60c ACM |
1114 | int perf_event__synthesize_build_id(struct dso *pos, u16 misc, |
1115 | perf_event__handler_t process, | |
1116 | struct machine *machine, | |
1117 | struct perf_session *session) | |
c7929e47 | 1118 | { |
8115d60c | 1119 | union perf_event ev; |
c7929e47 TZ |
1120 | size_t len; |
1121 | int err = 0; | |
1122 | ||
1123 | if (!pos->hit) | |
1124 | return err; | |
1125 | ||
1126 | memset(&ev, 0, sizeof(ev)); | |
1127 | ||
1128 | len = pos->long_name_len + 1; | |
1129 | len = ALIGN(len, NAME_ALIGN); | |
1130 | memcpy(&ev.build_id.build_id, pos->build_id, sizeof(pos->build_id)); | |
1131 | ev.build_id.header.type = PERF_RECORD_HEADER_BUILD_ID; | |
1132 | ev.build_id.header.misc = misc; | |
23346f21 | 1133 | ev.build_id.pid = machine->pid; |
c7929e47 TZ |
1134 | ev.build_id.header.size = sizeof(ev.build_id) + len; |
1135 | memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len); | |
1136 | ||
640c03ce | 1137 | err = process(&ev, NULL, session); |
c7929e47 TZ |
1138 | |
1139 | return err; | |
1140 | } | |
1141 | ||
8115d60c ACM |
1142 | int perf_event__process_build_id(union perf_event *event, |
1143 | struct perf_session *session) | |
c7929e47 | 1144 | { |
8115d60c ACM |
1145 | __event_process_build_id(&event->build_id, |
1146 | event->build_id.filename, | |
a1645ce1 | 1147 | session); |
c7929e47 TZ |
1148 | return 0; |
1149 | } | |
a1ac1d3c SE |
1150 | |
1151 | void disable_buildid_cache(void) | |
1152 | { | |
1153 | no_buildid_cache = true; | |
1154 | } |