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Commit | Line | Data |
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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" |
7c6a1c65 PZ |
12 | #include "util.h" |
13 | #include "header.h" | |
03456a15 FW |
14 | #include "../perf.h" |
15 | #include "trace-event.h" | |
301a0b02 | 16 | #include "session.h" |
8671dab9 | 17 | #include "symbol.h" |
4778d2e4 | 18 | #include "debug.h" |
7c6a1c65 | 19 | |
a1ac1d3c SE |
20 | static bool no_buildid_cache = false; |
21 | ||
7c6a1c65 | 22 | /* |
ec60a3fe | 23 | * Create new perf.data header attribute: |
7c6a1c65 | 24 | */ |
cdd6c482 | 25 | struct perf_header_attr *perf_header_attr__new(struct perf_event_attr *attr) |
7c6a1c65 PZ |
26 | { |
27 | struct perf_header_attr *self = malloc(sizeof(*self)); | |
28 | ||
dc79c0fc ACM |
29 | if (self != NULL) { |
30 | self->attr = *attr; | |
31 | self->ids = 0; | |
32 | self->size = 1; | |
33 | self->id = malloc(sizeof(u64)); | |
34 | if (self->id == NULL) { | |
35 | free(self); | |
36 | self = NULL; | |
37 | } | |
38 | } | |
7c6a1c65 PZ |
39 | |
40 | return self; | |
41 | } | |
42 | ||
11deb1f9 ACM |
43 | void perf_header_attr__delete(struct perf_header_attr *self) |
44 | { | |
45 | free(self->id); | |
46 | free(self); | |
47 | } | |
48 | ||
58754121 | 49 | int perf_header_attr__add_id(struct perf_header_attr *self, u64 id) |
7c6a1c65 PZ |
50 | { |
51 | int pos = self->ids; | |
52 | ||
53 | self->ids++; | |
54 | if (self->ids > self->size) { | |
58754121 ACM |
55 | int nsize = self->size * 2; |
56 | u64 *nid = realloc(self->id, nsize * sizeof(u64)); | |
57 | ||
58 | if (nid == NULL) | |
59 | return -1; | |
60 | ||
61 | self->size = nsize; | |
62 | self->id = nid; | |
7c6a1c65 PZ |
63 | } |
64 | self->id[pos] = id; | |
58754121 | 65 | return 0; |
7c6a1c65 PZ |
66 | } |
67 | ||
94c744b6 | 68 | int perf_header__init(struct perf_header *self) |
7c6a1c65 | 69 | { |
94c744b6 ACM |
70 | self->size = 1; |
71 | self->attr = malloc(sizeof(void *)); | |
72 | return self->attr == NULL ? -ENOMEM : 0; | |
7c6a1c65 PZ |
73 | } |
74 | ||
94c744b6 | 75 | void perf_header__exit(struct perf_header *self) |
4dc0a04b ACM |
76 | { |
77 | int i; | |
4dc0a04b | 78 | for (i = 0; i < self->attrs; ++i) |
94c744b6 | 79 | perf_header_attr__delete(self->attr[i]); |
4dc0a04b | 80 | free(self->attr); |
4dc0a04b ACM |
81 | } |
82 | ||
11deb1f9 ACM |
83 | int perf_header__add_attr(struct perf_header *self, |
84 | struct perf_header_attr *attr) | |
7c6a1c65 | 85 | { |
7c6a1c65 | 86 | if (self->frozen) |
11deb1f9 | 87 | return -1; |
7c6a1c65 | 88 | |
4dc0a04b | 89 | if (self->attrs == self->size) { |
11deb1f9 ACM |
90 | int nsize = self->size * 2; |
91 | struct perf_header_attr **nattr; | |
92 | ||
93 | nattr = realloc(self->attr, nsize * sizeof(void *)); | |
94 | if (nattr == NULL) | |
95 | return -1; | |
96 | ||
97 | self->size = nsize; | |
98 | self->attr = nattr; | |
7c6a1c65 | 99 | } |
4dc0a04b ACM |
100 | |
101 | self->attr[self->attrs++] = attr; | |
11deb1f9 | 102 | return 0; |
7c6a1c65 PZ |
103 | } |
104 | ||
8755a8f2 AV |
105 | static int event_count; |
106 | static struct perf_trace_event_type *events; | |
107 | ||
ae99fb2c | 108 | int perf_header__push_event(u64 id, const char *name) |
8755a8f2 | 109 | { |
ec60a3fe | 110 | if (strlen(name) > MAX_EVENT_NAME) |
6beba7ad | 111 | pr_warning("Event %s will be truncated\n", name); |
8755a8f2 AV |
112 | |
113 | if (!events) { | |
114 | events = malloc(sizeof(struct perf_trace_event_type)); | |
ae99fb2c ACM |
115 | if (events == NULL) |
116 | return -ENOMEM; | |
8755a8f2 | 117 | } else { |
ae99fb2c ACM |
118 | struct perf_trace_event_type *nevents; |
119 | ||
120 | nevents = realloc(events, (event_count + 1) * sizeof(*events)); | |
121 | if (nevents == NULL) | |
122 | return -ENOMEM; | |
123 | events = nevents; | |
8755a8f2 AV |
124 | } |
125 | memset(&events[event_count], 0, sizeof(struct perf_trace_event_type)); | |
126 | events[event_count].event_id = id; | |
ec60a3fe | 127 | strncpy(events[event_count].name, name, MAX_EVENT_NAME - 1); |
8755a8f2 | 128 | event_count++; |
ae99fb2c | 129 | return 0; |
8755a8f2 AV |
130 | } |
131 | ||
132 | char *perf_header__find_event(u64 id) | |
133 | { | |
134 | int i; | |
135 | for (i = 0 ; i < event_count; i++) { | |
136 | if (events[i].event_id == id) | |
137 | return events[i].name; | |
138 | } | |
139 | return NULL; | |
140 | } | |
141 | ||
7c6a1c65 PZ |
142 | static const char *__perf_magic = "PERFFILE"; |
143 | ||
144 | #define PERF_MAGIC (*(u64 *)__perf_magic) | |
145 | ||
7c6a1c65 | 146 | struct perf_file_attr { |
cdd6c482 | 147 | struct perf_event_attr attr; |
7c6a1c65 PZ |
148 | struct perf_file_section ids; |
149 | }; | |
150 | ||
8d06367f ACM |
151 | void perf_header__set_feat(struct perf_header *self, int feat) |
152 | { | |
153 | set_bit(feat, self->adds_features); | |
154 | } | |
155 | ||
baa2f6ce ACM |
156 | void perf_header__clear_feat(struct perf_header *self, int feat) |
157 | { | |
158 | clear_bit(feat, self->adds_features); | |
159 | } | |
160 | ||
8d06367f ACM |
161 | bool perf_header__has_feat(const struct perf_header *self, int feat) |
162 | { | |
163 | return test_bit(feat, self->adds_features); | |
164 | } | |
165 | ||
3726cc75 | 166 | static int do_write(int fd, const void *buf, size_t size) |
7c6a1c65 PZ |
167 | { |
168 | while (size) { | |
169 | int ret = write(fd, buf, size); | |
170 | ||
171 | if (ret < 0) | |
d5eed904 | 172 | return -errno; |
7c6a1c65 PZ |
173 | |
174 | size -= ret; | |
175 | buf += ret; | |
176 | } | |
3726cc75 ACM |
177 | |
178 | return 0; | |
7c6a1c65 PZ |
179 | } |
180 | ||
f92cb24c ACM |
181 | #define NAME_ALIGN 64 |
182 | ||
183 | static int write_padded(int fd, const void *bf, size_t count, | |
184 | size_t count_aligned) | |
185 | { | |
186 | static const char zero_buf[NAME_ALIGN]; | |
187 | int err = do_write(fd, bf, count); | |
188 | ||
189 | if (!err) | |
190 | err = do_write(fd, zero_buf, count_aligned - count); | |
191 | ||
192 | return err; | |
193 | } | |
194 | ||
4cf40131 ACM |
195 | #define dsos__for_each_with_build_id(pos, head) \ |
196 | list_for_each_entry(pos, head, node) \ | |
197 | if (!pos->has_build_id) \ | |
198 | continue; \ | |
199 | else | |
200 | ||
a1645ce1 ZY |
201 | static int __dsos__write_buildid_table(struct list_head *head, pid_t pid, |
202 | u16 misc, int fd) | |
8671dab9 | 203 | { |
e30a3d12 ACM |
204 | struct dso *pos; |
205 | ||
4cf40131 | 206 | dsos__for_each_with_build_id(pos, head) { |
d5eed904 | 207 | int err; |
e30a3d12 | 208 | struct build_id_event b; |
6122e4e4 | 209 | size_t len; |
e30a3d12 | 210 | |
6122e4e4 ACM |
211 | if (!pos->hit) |
212 | continue; | |
213 | len = pos->long_name_len + 1; | |
7691b1ec | 214 | len = ALIGN(len, NAME_ALIGN); |
e30a3d12 ACM |
215 | memset(&b, 0, sizeof(b)); |
216 | memcpy(&b.build_id, pos->build_id, sizeof(pos->build_id)); | |
a1645ce1 | 217 | b.pid = pid; |
a89e5abe | 218 | b.header.misc = misc; |
e30a3d12 | 219 | b.header.size = sizeof(b) + len; |
d5eed904 ACM |
220 | err = do_write(fd, &b, sizeof(b)); |
221 | if (err < 0) | |
222 | return err; | |
f92cb24c ACM |
223 | err = write_padded(fd, pos->long_name, |
224 | pos->long_name_len + 1, len); | |
d5eed904 ACM |
225 | if (err < 0) |
226 | return err; | |
57f395a7 | 227 | } |
3726cc75 ACM |
228 | |
229 | return 0; | |
8671dab9 FW |
230 | } |
231 | ||
f869097e ACM |
232 | static int machine__write_buildid_table(struct machine *self, int fd) |
233 | { | |
234 | int err; | |
235 | u16 kmisc = PERF_RECORD_MISC_KERNEL, | |
236 | umisc = PERF_RECORD_MISC_USER; | |
237 | ||
238 | if (!machine__is_host(self)) { | |
239 | kmisc = PERF_RECORD_MISC_GUEST_KERNEL; | |
240 | umisc = PERF_RECORD_MISC_GUEST_USER; | |
241 | } | |
242 | ||
243 | err = __dsos__write_buildid_table(&self->kernel_dsos, self->pid, | |
244 | kmisc, fd); | |
245 | if (err == 0) | |
246 | err = __dsos__write_buildid_table(&self->user_dsos, | |
247 | self->pid, umisc, fd); | |
248 | return err; | |
249 | } | |
250 | ||
a1645ce1 | 251 | static int dsos__write_buildid_table(struct perf_header *header, int fd) |
b0da954a | 252 | { |
a1645ce1 ZY |
253 | struct perf_session *session = container_of(header, |
254 | struct perf_session, header); | |
255 | struct rb_node *nd; | |
f869097e ACM |
256 | int err = machine__write_buildid_table(&session->host_machine, fd); |
257 | ||
258 | if (err) | |
259 | return err; | |
a1645ce1 | 260 | |
23346f21 ACM |
261 | for (nd = rb_first(&session->machines); nd; nd = rb_next(nd)) { |
262 | struct machine *pos = rb_entry(nd, struct machine, rb_node); | |
f869097e | 263 | err = machine__write_buildid_table(pos, fd); |
a1645ce1 ZY |
264 | if (err) |
265 | break; | |
266 | } | |
b0da954a ACM |
267 | return err; |
268 | } | |
269 | ||
ef12a141 ACM |
270 | int build_id_cache__add_s(const char *sbuild_id, const char *debugdir, |
271 | const char *name, bool is_kallsyms) | |
4cf40131 ACM |
272 | { |
273 | const size_t size = PATH_MAX; | |
68a7a771 FBH |
274 | char *realname = realpath(name, NULL), |
275 | *filename = malloc(size), | |
ef12a141 | 276 | *linkname = malloc(size), *targetname; |
4cf40131 ACM |
277 | int len, err = -1; |
278 | ||
68a7a771 | 279 | if (realname == NULL || filename == NULL || linkname == NULL) |
4cf40131 ACM |
280 | goto out_free; |
281 | ||
9e201442 | 282 | len = snprintf(filename, size, "%s%s%s", |
68a7a771 | 283 | debugdir, is_kallsyms ? "/" : "", realname); |
4cf40131 ACM |
284 | if (mkdir_p(filename, 0755)) |
285 | goto out_free; | |
286 | ||
ef12a141 | 287 | snprintf(filename + len, sizeof(filename) - len, "/%s", sbuild_id); |
4cf40131 | 288 | |
9e201442 ACM |
289 | if (access(filename, F_OK)) { |
290 | if (is_kallsyms) { | |
291 | if (copyfile("/proc/kallsyms", filename)) | |
292 | goto out_free; | |
68a7a771 | 293 | } else if (link(realname, filename) && copyfile(name, filename)) |
9e201442 ACM |
294 | goto out_free; |
295 | } | |
4cf40131 ACM |
296 | |
297 | len = snprintf(linkname, size, "%s/.build-id/%.2s", | |
298 | debugdir, sbuild_id); | |
299 | ||
300 | if (access(linkname, X_OK) && mkdir_p(linkname, 0755)) | |
301 | goto out_free; | |
302 | ||
303 | snprintf(linkname + len, size - len, "/%s", sbuild_id + 2); | |
304 | targetname = filename + strlen(debugdir) - 5; | |
305 | memcpy(targetname, "../..", 5); | |
306 | ||
307 | if (symlink(targetname, linkname) == 0) | |
308 | err = 0; | |
309 | out_free: | |
68a7a771 | 310 | free(realname); |
4cf40131 ACM |
311 | free(filename); |
312 | free(linkname); | |
313 | return err; | |
314 | } | |
315 | ||
ef12a141 ACM |
316 | static int build_id_cache__add_b(const u8 *build_id, size_t build_id_size, |
317 | const char *name, const char *debugdir, | |
318 | bool is_kallsyms) | |
319 | { | |
320 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; | |
321 | ||
322 | build_id__sprintf(build_id, build_id_size, sbuild_id); | |
323 | ||
324 | return build_id_cache__add_s(sbuild_id, debugdir, name, is_kallsyms); | |
325 | } | |
326 | ||
327 | int build_id_cache__remove_s(const char *sbuild_id, const char *debugdir) | |
328 | { | |
329 | const size_t size = PATH_MAX; | |
330 | char *filename = malloc(size), | |
331 | *linkname = malloc(size); | |
332 | int err = -1; | |
333 | ||
334 | if (filename == NULL || linkname == NULL) | |
335 | goto out_free; | |
336 | ||
337 | snprintf(linkname, size, "%s/.build-id/%.2s/%s", | |
338 | debugdir, sbuild_id, sbuild_id + 2); | |
339 | ||
340 | if (access(linkname, F_OK)) | |
341 | goto out_free; | |
342 | ||
343 | if (readlink(linkname, filename, size) < 0) | |
344 | goto out_free; | |
345 | ||
346 | if (unlink(linkname)) | |
347 | goto out_free; | |
348 | ||
349 | /* | |
350 | * Since the link is relative, we must make it absolute: | |
351 | */ | |
352 | snprintf(linkname, size, "%s/.build-id/%.2s/%s", | |
353 | debugdir, sbuild_id, filename); | |
354 | ||
355 | if (unlink(linkname)) | |
356 | goto out_free; | |
357 | ||
358 | err = 0; | |
359 | out_free: | |
360 | free(filename); | |
361 | free(linkname); | |
362 | return err; | |
363 | } | |
364 | ||
365 | static int dso__cache_build_id(struct dso *self, const char *debugdir) | |
366 | { | |
367 | bool is_kallsyms = self->kernel && self->long_name[0] != '/'; | |
368 | ||
369 | return build_id_cache__add_b(self->build_id, sizeof(self->build_id), | |
370 | self->long_name, debugdir, is_kallsyms); | |
371 | } | |
372 | ||
4cf40131 ACM |
373 | static int __dsos__cache_build_ids(struct list_head *head, const char *debugdir) |
374 | { | |
375 | struct dso *pos; | |
376 | int err = 0; | |
377 | ||
378 | dsos__for_each_with_build_id(pos, head) | |
379 | if (dso__cache_build_id(pos, debugdir)) | |
380 | err = -1; | |
381 | ||
382 | return err; | |
383 | } | |
384 | ||
f869097e ACM |
385 | static int machine__cache_build_ids(struct machine *self, const char *debugdir) |
386 | { | |
387 | int ret = __dsos__cache_build_ids(&self->kernel_dsos, debugdir); | |
388 | ret |= __dsos__cache_build_ids(&self->user_dsos, debugdir); | |
389 | return ret; | |
390 | } | |
391 | ||
392 | static int perf_session__cache_build_ids(struct perf_session *self) | |
4cf40131 | 393 | { |
a1645ce1 | 394 | struct rb_node *nd; |
f869097e | 395 | int ret; |
4cf40131 ACM |
396 | char debugdir[PATH_MAX]; |
397 | ||
45de34bb | 398 | snprintf(debugdir, sizeof(debugdir), "%s", buildid_dir); |
4cf40131 ACM |
399 | |
400 | if (mkdir(debugdir, 0755) != 0 && errno != EEXIST) | |
401 | return -1; | |
402 | ||
f869097e ACM |
403 | ret = machine__cache_build_ids(&self->host_machine, debugdir); |
404 | ||
405 | for (nd = rb_first(&self->machines); nd; nd = rb_next(nd)) { | |
23346f21 | 406 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
f869097e | 407 | ret |= machine__cache_build_ids(pos, debugdir); |
a1645ce1 ZY |
408 | } |
409 | return ret ? -1 : 0; | |
410 | } | |
411 | ||
f869097e ACM |
412 | static bool machine__read_build_ids(struct machine *self, bool with_hits) |
413 | { | |
414 | bool ret = __dsos__read_build_ids(&self->kernel_dsos, with_hits); | |
415 | ret |= __dsos__read_build_ids(&self->user_dsos, with_hits); | |
416 | return ret; | |
417 | } | |
418 | ||
419 | static bool perf_session__read_build_ids(struct perf_session *self, bool with_hits) | |
a1645ce1 | 420 | { |
a1645ce1 | 421 | struct rb_node *nd; |
f869097e | 422 | bool ret = machine__read_build_ids(&self->host_machine, with_hits); |
a1645ce1 | 423 | |
f869097e | 424 | for (nd = rb_first(&self->machines); nd; nd = rb_next(nd)) { |
23346f21 | 425 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
f869097e | 426 | ret |= machine__read_build_ids(pos, with_hits); |
a1645ce1 ZY |
427 | } |
428 | ||
429 | return ret; | |
4cf40131 ACM |
430 | } |
431 | ||
361c99a6 ACM |
432 | static int perf_header__adds_write(struct perf_header *self, |
433 | struct perf_evlist *evlist, int fd) | |
2ba08250 | 434 | { |
9e827dd0 | 435 | int nr_sections; |
f869097e | 436 | struct perf_session *session; |
9e827dd0 FW |
437 | struct perf_file_section *feat_sec; |
438 | int sec_size; | |
439 | u64 sec_start; | |
d5eed904 | 440 | int idx = 0, err; |
9e827dd0 | 441 | |
f869097e | 442 | session = container_of(self, struct perf_session, header); |
baa2f6ce ACM |
443 | |
444 | if (perf_header__has_feat(self, HEADER_BUILD_ID && | |
445 | !perf_session__read_build_ids(session, true))) | |
446 | perf_header__clear_feat(self, HEADER_BUILD_ID); | |
9e827dd0 FW |
447 | |
448 | nr_sections = bitmap_weight(self->adds_features, HEADER_FEAT_BITS); | |
449 | if (!nr_sections) | |
d5eed904 | 450 | return 0; |
9e827dd0 FW |
451 | |
452 | feat_sec = calloc(sizeof(*feat_sec), nr_sections); | |
d5eed904 ACM |
453 | if (feat_sec == NULL) |
454 | return -ENOMEM; | |
9e827dd0 FW |
455 | |
456 | sec_size = sizeof(*feat_sec) * nr_sections; | |
457 | ||
458 | sec_start = self->data_offset + self->data_size; | |
f887f301 | 459 | lseek(fd, sec_start + sec_size, SEEK_SET); |
2ba08250 | 460 | |
3e13ab2d | 461 | if (perf_header__has_feat(self, HEADER_TRACE_INFO)) { |
9e827dd0 FW |
462 | struct perf_file_section *trace_sec; |
463 | ||
464 | trace_sec = &feat_sec[idx++]; | |
465 | ||
2ba08250 | 466 | /* Write trace info */ |
f887f301 | 467 | trace_sec->offset = lseek(fd, 0, SEEK_CUR); |
361c99a6 | 468 | read_tracing_data(fd, &evlist->entries); |
f887f301 | 469 | trace_sec->size = lseek(fd, 0, SEEK_CUR) - trace_sec->offset; |
2ba08250 | 470 | } |
8671dab9 | 471 | |
9e827dd0 FW |
472 | if (perf_header__has_feat(self, HEADER_BUILD_ID)) { |
473 | struct perf_file_section *buildid_sec; | |
474 | ||
475 | buildid_sec = &feat_sec[idx++]; | |
476 | ||
477 | /* Write build-ids */ | |
f887f301 | 478 | buildid_sec->offset = lseek(fd, 0, SEEK_CUR); |
a1645ce1 | 479 | err = dsos__write_buildid_table(self, fd); |
d5eed904 ACM |
480 | if (err < 0) { |
481 | pr_debug("failed to write buildid table\n"); | |
482 | goto out_free; | |
483 | } | |
f887f301 XG |
484 | buildid_sec->size = lseek(fd, 0, SEEK_CUR) - |
485 | buildid_sec->offset; | |
a1ac1d3c SE |
486 | if (!no_buildid_cache) |
487 | perf_session__cache_build_ids(session); | |
8671dab9 | 488 | } |
9e827dd0 | 489 | |
f887f301 | 490 | lseek(fd, sec_start, SEEK_SET); |
d5eed904 ACM |
491 | err = do_write(fd, feat_sec, sec_size); |
492 | if (err < 0) | |
493 | pr_debug("failed to write feature section\n"); | |
494 | out_free: | |
9e827dd0 | 495 | free(feat_sec); |
d5eed904 | 496 | return err; |
9e827dd0 | 497 | } |
2ba08250 | 498 | |
8dc58101 TZ |
499 | int perf_header__write_pipe(int fd) |
500 | { | |
501 | struct perf_pipe_file_header f_header; | |
502 | int err; | |
503 | ||
504 | f_header = (struct perf_pipe_file_header){ | |
505 | .magic = PERF_MAGIC, | |
506 | .size = sizeof(f_header), | |
507 | }; | |
508 | ||
509 | err = do_write(fd, &f_header, sizeof(f_header)); | |
510 | if (err < 0) { | |
511 | pr_debug("failed to write perf pipe header\n"); | |
512 | return err; | |
513 | } | |
514 | ||
515 | return 0; | |
516 | } | |
517 | ||
361c99a6 ACM |
518 | int perf_header__write(struct perf_header *self, struct perf_evlist *evlist, |
519 | int fd, bool at_exit) | |
7c6a1c65 PZ |
520 | { |
521 | struct perf_file_header f_header; | |
522 | struct perf_file_attr f_attr; | |
523 | struct perf_header_attr *attr; | |
d5eed904 | 524 | int i, err; |
7c6a1c65 PZ |
525 | |
526 | lseek(fd, sizeof(f_header), SEEK_SET); | |
527 | ||
7c6a1c65 PZ |
528 | for (i = 0; i < self->attrs; i++) { |
529 | attr = self->attr[i]; | |
530 | ||
531 | attr->id_offset = lseek(fd, 0, SEEK_CUR); | |
d5eed904 ACM |
532 | err = do_write(fd, attr->id, attr->ids * sizeof(u64)); |
533 | if (err < 0) { | |
534 | pr_debug("failed to write perf header\n"); | |
535 | return err; | |
536 | } | |
7c6a1c65 PZ |
537 | } |
538 | ||
539 | ||
540 | self->attr_offset = lseek(fd, 0, SEEK_CUR); | |
541 | ||
542 | for (i = 0; i < self->attrs; i++) { | |
543 | attr = self->attr[i]; | |
544 | ||
545 | f_attr = (struct perf_file_attr){ | |
546 | .attr = attr->attr, | |
547 | .ids = { | |
548 | .offset = attr->id_offset, | |
549 | .size = attr->ids * sizeof(u64), | |
550 | } | |
551 | }; | |
d5eed904 ACM |
552 | err = do_write(fd, &f_attr, sizeof(f_attr)); |
553 | if (err < 0) { | |
554 | pr_debug("failed to write perf header attribute\n"); | |
555 | return err; | |
556 | } | |
7c6a1c65 PZ |
557 | } |
558 | ||
8755a8f2 AV |
559 | self->event_offset = lseek(fd, 0, SEEK_CUR); |
560 | self->event_size = event_count * sizeof(struct perf_trace_event_type); | |
d5eed904 ACM |
561 | if (events) { |
562 | err = do_write(fd, events, self->event_size); | |
563 | if (err < 0) { | |
564 | pr_debug("failed to write perf header events\n"); | |
565 | return err; | |
566 | } | |
567 | } | |
8755a8f2 | 568 | |
7c6a1c65 PZ |
569 | self->data_offset = lseek(fd, 0, SEEK_CUR); |
570 | ||
d5eed904 | 571 | if (at_exit) { |
361c99a6 | 572 | err = perf_header__adds_write(self, evlist, fd); |
d5eed904 ACM |
573 | if (err < 0) |
574 | return err; | |
575 | } | |
9e827dd0 | 576 | |
7c6a1c65 PZ |
577 | f_header = (struct perf_file_header){ |
578 | .magic = PERF_MAGIC, | |
579 | .size = sizeof(f_header), | |
580 | .attr_size = sizeof(f_attr), | |
581 | .attrs = { | |
582 | .offset = self->attr_offset, | |
583 | .size = self->attrs * sizeof(f_attr), | |
584 | }, | |
585 | .data = { | |
586 | .offset = self->data_offset, | |
587 | .size = self->data_size, | |
588 | }, | |
8755a8f2 AV |
589 | .event_types = { |
590 | .offset = self->event_offset, | |
591 | .size = self->event_size, | |
592 | }, | |
7c6a1c65 PZ |
593 | }; |
594 | ||
db9f11e3 | 595 | memcpy(&f_header.adds_features, &self->adds_features, sizeof(self->adds_features)); |
2ba08250 | 596 | |
7c6a1c65 | 597 | lseek(fd, 0, SEEK_SET); |
d5eed904 ACM |
598 | err = do_write(fd, &f_header, sizeof(f_header)); |
599 | if (err < 0) { | |
600 | pr_debug("failed to write perf header\n"); | |
601 | return err; | |
602 | } | |
f887f301 | 603 | lseek(fd, self->data_offset + self->data_size, SEEK_SET); |
7c6a1c65 PZ |
604 | |
605 | self->frozen = 1; | |
d5eed904 | 606 | return 0; |
7c6a1c65 PZ |
607 | } |
608 | ||
ba21594c ACM |
609 | static int perf_header__getbuffer64(struct perf_header *self, |
610 | int fd, void *buf, size_t size) | |
611 | { | |
1e7972cc | 612 | if (readn(fd, buf, size) <= 0) |
ba21594c ACM |
613 | return -1; |
614 | ||
615 | if (self->needs_swap) | |
616 | mem_bswap_64(buf, size); | |
617 | ||
618 | return 0; | |
619 | } | |
620 | ||
37562eac ACM |
621 | int perf_header__process_sections(struct perf_header *self, int fd, |
622 | int (*process)(struct perf_file_section *self, | |
ba21594c | 623 | struct perf_header *ph, |
37562eac | 624 | int feat, int fd)) |
2ba08250 | 625 | { |
9e827dd0 FW |
626 | struct perf_file_section *feat_sec; |
627 | int nr_sections; | |
628 | int sec_size; | |
629 | int idx = 0; | |
769885f3 | 630 | int err = -1, feat = 1; |
9e827dd0 FW |
631 | |
632 | nr_sections = bitmap_weight(self->adds_features, HEADER_FEAT_BITS); | |
633 | if (!nr_sections) | |
37562eac | 634 | return 0; |
9e827dd0 FW |
635 | |
636 | feat_sec = calloc(sizeof(*feat_sec), nr_sections); | |
637 | if (!feat_sec) | |
37562eac | 638 | return -1; |
9e827dd0 FW |
639 | |
640 | sec_size = sizeof(*feat_sec) * nr_sections; | |
641 | ||
f887f301 | 642 | lseek(fd, self->data_offset + self->data_size, SEEK_SET); |
9e827dd0 | 643 | |
ba21594c | 644 | if (perf_header__getbuffer64(self, fd, feat_sec, sec_size)) |
769885f3 | 645 | goto out_free; |
9e827dd0 | 646 | |
769885f3 | 647 | err = 0; |
37562eac ACM |
648 | while (idx < nr_sections && feat < HEADER_LAST_FEATURE) { |
649 | if (perf_header__has_feat(self, feat)) { | |
650 | struct perf_file_section *sec = &feat_sec[idx++]; | |
2ba08250 | 651 | |
ba21594c | 652 | err = process(sec, self, feat, fd); |
37562eac ACM |
653 | if (err < 0) |
654 | break; | |
655 | } | |
656 | ++feat; | |
2ba08250 | 657 | } |
769885f3 | 658 | out_free: |
37562eac ACM |
659 | free(feat_sec); |
660 | return err; | |
769885f3 | 661 | } |
4778d2e4 | 662 | |
37562eac ACM |
663 | int perf_file_header__read(struct perf_file_header *self, |
664 | struct perf_header *ph, int fd) | |
665 | { | |
666 | lseek(fd, 0, SEEK_SET); | |
37562eac | 667 | |
1e7972cc | 668 | if (readn(fd, self, sizeof(*self)) <= 0 || |
ba21594c | 669 | memcmp(&self->magic, __perf_magic, sizeof(self->magic))) |
37562eac ACM |
670 | return -1; |
671 | ||
ba21594c ACM |
672 | if (self->attr_size != sizeof(struct perf_file_attr)) { |
673 | u64 attr_size = bswap_64(self->attr_size); | |
674 | ||
675 | if (attr_size != sizeof(struct perf_file_attr)) | |
676 | return -1; | |
677 | ||
678 | mem_bswap_64(self, offsetof(struct perf_file_header, | |
679 | adds_features)); | |
680 | ph->needs_swap = true; | |
681 | } | |
682 | ||
37562eac ACM |
683 | if (self->size != sizeof(*self)) { |
684 | /* Support the previous format */ | |
685 | if (self->size == offsetof(typeof(*self), adds_features)) | |
686 | bitmap_zero(self->adds_features, HEADER_FEAT_BITS); | |
687 | else | |
688 | return -1; | |
4778d2e4 | 689 | } |
9e827dd0 | 690 | |
37562eac | 691 | memcpy(&ph->adds_features, &self->adds_features, |
ba21594c ACM |
692 | sizeof(ph->adds_features)); |
693 | /* | |
694 | * FIXME: hack that assumes that if we need swap the perf.data file | |
695 | * may be coming from an arch with a different word-size, ergo different | |
696 | * DEFINE_BITMAP format, investigate more later, but for now its mostly | |
697 | * safe to assume that we have a build-id section. Trace files probably | |
698 | * have several other issues in this realm anyway... | |
699 | */ | |
700 | if (ph->needs_swap) { | |
701 | memset(&ph->adds_features, 0, sizeof(ph->adds_features)); | |
702 | perf_header__set_feat(ph, HEADER_BUILD_ID); | |
703 | } | |
37562eac ACM |
704 | |
705 | ph->event_offset = self->event_types.offset; | |
ba21594c ACM |
706 | ph->event_size = self->event_types.size; |
707 | ph->data_offset = self->data.offset; | |
37562eac ACM |
708 | ph->data_size = self->data.size; |
709 | return 0; | |
710 | } | |
711 | ||
a1645ce1 ZY |
712 | static int __event_process_build_id(struct build_id_event *bev, |
713 | char *filename, | |
714 | struct perf_session *session) | |
715 | { | |
716 | int err = -1; | |
717 | struct list_head *head; | |
23346f21 | 718 | struct machine *machine; |
a1645ce1 ZY |
719 | u16 misc; |
720 | struct dso *dso; | |
721 | enum dso_kernel_type dso_type; | |
722 | ||
23346f21 ACM |
723 | machine = perf_session__findnew_machine(session, bev->pid); |
724 | if (!machine) | |
a1645ce1 ZY |
725 | goto out; |
726 | ||
727 | misc = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
728 | ||
729 | switch (misc) { | |
730 | case PERF_RECORD_MISC_KERNEL: | |
731 | dso_type = DSO_TYPE_KERNEL; | |
23346f21 | 732 | head = &machine->kernel_dsos; |
a1645ce1 ZY |
733 | break; |
734 | case PERF_RECORD_MISC_GUEST_KERNEL: | |
735 | dso_type = DSO_TYPE_GUEST_KERNEL; | |
23346f21 | 736 | head = &machine->kernel_dsos; |
a1645ce1 ZY |
737 | break; |
738 | case PERF_RECORD_MISC_USER: | |
739 | case PERF_RECORD_MISC_GUEST_USER: | |
740 | dso_type = DSO_TYPE_USER; | |
23346f21 | 741 | head = &machine->user_dsos; |
a1645ce1 ZY |
742 | break; |
743 | default: | |
744 | goto out; | |
745 | } | |
746 | ||
747 | dso = __dsos__findnew(head, filename); | |
748 | if (dso != NULL) { | |
454c407e TZ |
749 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; |
750 | ||
a1645ce1 | 751 | dso__set_build_id(dso, &bev->build_id); |
454c407e TZ |
752 | |
753 | if (filename[0] == '[') | |
754 | dso->kernel = dso_type; | |
755 | ||
756 | build_id__sprintf(dso->build_id, sizeof(dso->build_id), | |
757 | sbuild_id); | |
758 | pr_debug("build id event received for %s: %s\n", | |
759 | dso->long_name, sbuild_id); | |
760 | } | |
a1645ce1 ZY |
761 | |
762 | err = 0; | |
763 | out: | |
764 | return err; | |
765 | } | |
766 | ||
767 | static int perf_header__read_build_ids(struct perf_header *self, | |
768 | int input, u64 offset, u64 size) | |
769 | { | |
770 | struct perf_session *session = container_of(self, | |
771 | struct perf_session, header); | |
772 | struct build_id_event bev; | |
773 | char filename[PATH_MAX]; | |
774 | u64 limit = offset + size; | |
775 | int err = -1; | |
776 | ||
777 | while (offset < limit) { | |
778 | ssize_t len; | |
779 | ||
780 | if (read(input, &bev, sizeof(bev)) != sizeof(bev)) | |
781 | goto out; | |
782 | ||
783 | if (self->needs_swap) | |
784 | perf_event_header__bswap(&bev.header); | |
785 | ||
786 | len = bev.header.size - sizeof(bev); | |
787 | if (read(input, filename, len) != len) | |
788 | goto out; | |
789 | ||
790 | __event_process_build_id(&bev, filename, session); | |
791 | ||
792 | offset += bev.header.size; | |
793 | } | |
794 | err = 0; | |
795 | out: | |
796 | return err; | |
797 | } | |
798 | ||
37562eac | 799 | static int perf_file_section__process(struct perf_file_section *self, |
ba21594c | 800 | struct perf_header *ph, |
37562eac ACM |
801 | int feat, int fd) |
802 | { | |
f887f301 | 803 | if (lseek(fd, self->offset, SEEK_SET) == (off_t)-1) { |
9486aa38 ACM |
804 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " |
805 | "%d, continuing...\n", self->offset, feat); | |
37562eac ACM |
806 | return 0; |
807 | } | |
808 | ||
809 | switch (feat) { | |
810 | case HEADER_TRACE_INFO: | |
454c407e | 811 | trace_report(fd, false); |
37562eac ACM |
812 | break; |
813 | ||
814 | case HEADER_BUILD_ID: | |
ba21594c | 815 | if (perf_header__read_build_ids(ph, fd, self->offset, self->size)) |
37562eac ACM |
816 | pr_debug("Failed to read buildids, continuing...\n"); |
817 | break; | |
818 | default: | |
819 | pr_debug("unknown feature %d, continuing...\n", feat); | |
820 | } | |
821 | ||
822 | return 0; | |
823 | } | |
2ba08250 | 824 | |
8dc58101 | 825 | static int perf_file_header__read_pipe(struct perf_pipe_file_header *self, |
454c407e TZ |
826 | struct perf_header *ph, int fd, |
827 | bool repipe) | |
7c6a1c65 | 828 | { |
1e7972cc | 829 | if (readn(fd, self, sizeof(*self)) <= 0 || |
8dc58101 TZ |
830 | memcmp(&self->magic, __perf_magic, sizeof(self->magic))) |
831 | return -1; | |
832 | ||
454c407e TZ |
833 | if (repipe && do_write(STDOUT_FILENO, self, sizeof(*self)) < 0) |
834 | return -1; | |
835 | ||
8dc58101 TZ |
836 | if (self->size != sizeof(*self)) { |
837 | u64 size = bswap_64(self->size); | |
838 | ||
839 | if (size != sizeof(*self)) | |
840 | return -1; | |
841 | ||
842 | ph->needs_swap = true; | |
843 | } | |
844 | ||
845 | return 0; | |
846 | } | |
847 | ||
848 | static int perf_header__read_pipe(struct perf_session *session, int fd) | |
849 | { | |
850 | struct perf_header *self = &session->header; | |
851 | struct perf_pipe_file_header f_header; | |
852 | ||
454c407e TZ |
853 | if (perf_file_header__read_pipe(&f_header, self, fd, |
854 | session->repipe) < 0) { | |
8dc58101 TZ |
855 | pr_debug("incompatible file format\n"); |
856 | return -EINVAL; | |
857 | } | |
858 | ||
859 | session->fd = fd; | |
860 | ||
861 | return 0; | |
862 | } | |
863 | ||
864 | int perf_header__read(struct perf_session *session, int fd) | |
865 | { | |
866 | struct perf_header *self = &session->header; | |
ba21594c | 867 | struct perf_file_header f_header; |
7c6a1c65 PZ |
868 | struct perf_file_attr f_attr; |
869 | u64 f_id; | |
7c6a1c65 PZ |
870 | int nr_attrs, nr_ids, i, j; |
871 | ||
8dc58101 TZ |
872 | if (session->fd_pipe) |
873 | return perf_header__read_pipe(session, fd); | |
874 | ||
4dc0a04b ACM |
875 | if (perf_file_header__read(&f_header, self, fd) < 0) { |
876 | pr_debug("incompatible file format\n"); | |
877 | return -EINVAL; | |
878 | } | |
7c6a1c65 PZ |
879 | |
880 | nr_attrs = f_header.attrs.size / sizeof(f_attr); | |
881 | lseek(fd, f_header.attrs.offset, SEEK_SET); | |
882 | ||
883 | for (i = 0; i < nr_attrs; i++) { | |
884 | struct perf_header_attr *attr; | |
1c222bce | 885 | off_t tmp; |
7c6a1c65 | 886 | |
ba21594c | 887 | if (perf_header__getbuffer64(self, fd, &f_attr, sizeof(f_attr))) |
769885f3 | 888 | goto out_errno; |
ba21594c | 889 | |
1c222bce | 890 | tmp = lseek(fd, 0, SEEK_CUR); |
7c6a1c65 PZ |
891 | |
892 | attr = perf_header_attr__new(&f_attr.attr); | |
dc79c0fc | 893 | if (attr == NULL) |
4dc0a04b | 894 | return -ENOMEM; |
7c6a1c65 PZ |
895 | |
896 | nr_ids = f_attr.ids.size / sizeof(u64); | |
897 | lseek(fd, f_attr.ids.offset, SEEK_SET); | |
898 | ||
899 | for (j = 0; j < nr_ids; j++) { | |
ba21594c | 900 | if (perf_header__getbuffer64(self, fd, &f_id, sizeof(f_id))) |
769885f3 | 901 | goto out_errno; |
7c6a1c65 | 902 | |
4dc0a04b ACM |
903 | if (perf_header_attr__add_id(attr, f_id) < 0) { |
904 | perf_header_attr__delete(attr); | |
905 | return -ENOMEM; | |
906 | } | |
907 | } | |
908 | if (perf_header__add_attr(self, attr) < 0) { | |
909 | perf_header_attr__delete(attr); | |
910 | return -ENOMEM; | |
7c6a1c65 | 911 | } |
11deb1f9 | 912 | |
7c6a1c65 PZ |
913 | lseek(fd, tmp, SEEK_SET); |
914 | } | |
915 | ||
8755a8f2 AV |
916 | if (f_header.event_types.size) { |
917 | lseek(fd, f_header.event_types.offset, SEEK_SET); | |
918 | events = malloc(f_header.event_types.size); | |
4dc0a04b ACM |
919 | if (events == NULL) |
920 | return -ENOMEM; | |
ba21594c ACM |
921 | if (perf_header__getbuffer64(self, fd, events, |
922 | f_header.event_types.size)) | |
769885f3 | 923 | goto out_errno; |
8755a8f2 AV |
924 | event_count = f_header.event_types.size / sizeof(struct perf_trace_event_type); |
925 | } | |
03456a15 | 926 | |
37562eac | 927 | perf_header__process_sections(self, fd, perf_file_section__process); |
4778d2e4 | 928 | |
2e01d179 | 929 | lseek(fd, self->data_offset, SEEK_SET); |
7c6a1c65 PZ |
930 | |
931 | self->frozen = 1; | |
4dc0a04b | 932 | return 0; |
769885f3 ACM |
933 | out_errno: |
934 | return -errno; | |
7c6a1c65 | 935 | } |
0d3a5c88 FW |
936 | |
937 | u64 perf_header__sample_type(struct perf_header *header) | |
938 | { | |
939 | u64 type = 0; | |
940 | int i; | |
941 | ||
942 | for (i = 0; i < header->attrs; i++) { | |
943 | struct perf_header_attr *attr = header->attr[i]; | |
944 | ||
945 | if (!type) | |
946 | type = attr->attr.sample_type; | |
947 | else if (type != attr->attr.sample_type) | |
948 | die("non matching sample_type"); | |
949 | } | |
950 | ||
951 | return type; | |
952 | } | |
953 | ||
9c90a61c ACM |
954 | bool perf_header__sample_id_all(const struct perf_header *header) |
955 | { | |
956 | bool value = false, first = true; | |
957 | int i; | |
958 | ||
959 | for (i = 0; i < header->attrs; i++) { | |
960 | struct perf_header_attr *attr = header->attr[i]; | |
961 | ||
962 | if (first) { | |
963 | value = attr->attr.sample_id_all; | |
964 | first = false; | |
965 | } else if (value != attr->attr.sample_id_all) | |
966 | die("non matching sample_id_all"); | |
967 | } | |
968 | ||
969 | return value; | |
970 | } | |
971 | ||
8115d60c ACM |
972 | int perf_event__synthesize_attr(struct perf_event_attr *attr, u16 ids, u64 *id, |
973 | perf_event__handler_t process, | |
974 | struct perf_session *session) | |
2c46dbb5 | 975 | { |
8115d60c | 976 | union perf_event *ev; |
2c46dbb5 TZ |
977 | size_t size; |
978 | int err; | |
979 | ||
980 | size = sizeof(struct perf_event_attr); | |
981 | size = ALIGN(size, sizeof(u64)); | |
982 | size += sizeof(struct perf_event_header); | |
983 | size += ids * sizeof(u64); | |
984 | ||
985 | ev = malloc(size); | |
986 | ||
ce47dc56 CS |
987 | if (ev == NULL) |
988 | return -ENOMEM; | |
989 | ||
2c46dbb5 TZ |
990 | ev->attr.attr = *attr; |
991 | memcpy(ev->attr.id, id, ids * sizeof(u64)); | |
992 | ||
993 | ev->attr.header.type = PERF_RECORD_HEADER_ATTR; | |
994 | ev->attr.header.size = size; | |
995 | ||
640c03ce | 996 | err = process(ev, NULL, session); |
2c46dbb5 TZ |
997 | |
998 | free(ev); | |
999 | ||
1000 | return err; | |
1001 | } | |
1002 | ||
8115d60c ACM |
1003 | int perf_event__synthesize_attrs(struct perf_header *self, |
1004 | perf_event__handler_t process, | |
1005 | struct perf_session *session) | |
2c46dbb5 TZ |
1006 | { |
1007 | struct perf_header_attr *attr; | |
1008 | int i, err = 0; | |
1009 | ||
1010 | for (i = 0; i < self->attrs; i++) { | |
1011 | attr = self->attr[i]; | |
1012 | ||
8115d60c ACM |
1013 | err = perf_event__synthesize_attr(&attr->attr, attr->ids, |
1014 | attr->id, process, session); | |
2c46dbb5 TZ |
1015 | if (err) { |
1016 | pr_debug("failed to create perf header attribute\n"); | |
1017 | return err; | |
1018 | } | |
1019 | } | |
1020 | ||
1021 | return err; | |
1022 | } | |
1023 | ||
8115d60c ACM |
1024 | int perf_event__process_attr(union perf_event *event, |
1025 | struct perf_session *session) | |
2c46dbb5 TZ |
1026 | { |
1027 | struct perf_header_attr *attr; | |
1028 | unsigned int i, ids, n_ids; | |
1029 | ||
8115d60c | 1030 | attr = perf_header_attr__new(&event->attr.attr); |
2c46dbb5 TZ |
1031 | if (attr == NULL) |
1032 | return -ENOMEM; | |
1033 | ||
8115d60c ACM |
1034 | ids = event->header.size; |
1035 | ids -= (void *)&event->attr.id - (void *)event; | |
2c46dbb5 TZ |
1036 | n_ids = ids / sizeof(u64); |
1037 | ||
1038 | for (i = 0; i < n_ids; i++) { | |
8115d60c | 1039 | if (perf_header_attr__add_id(attr, event->attr.id[i]) < 0) { |
2c46dbb5 TZ |
1040 | perf_header_attr__delete(attr); |
1041 | return -ENOMEM; | |
1042 | } | |
1043 | } | |
1044 | ||
1045 | if (perf_header__add_attr(&session->header, attr) < 0) { | |
1046 | perf_header_attr__delete(attr); | |
1047 | return -ENOMEM; | |
1048 | } | |
1049 | ||
1050 | perf_session__update_sample_type(session); | |
1051 | ||
1052 | return 0; | |
1053 | } | |
cd19a035 | 1054 | |
8115d60c ACM |
1055 | int perf_event__synthesize_event_type(u64 event_id, char *name, |
1056 | perf_event__handler_t process, | |
1057 | struct perf_session *session) | |
cd19a035 | 1058 | { |
8115d60c | 1059 | union perf_event ev; |
cd19a035 TZ |
1060 | size_t size = 0; |
1061 | int err = 0; | |
1062 | ||
1063 | memset(&ev, 0, sizeof(ev)); | |
1064 | ||
1065 | ev.event_type.event_type.event_id = event_id; | |
1066 | memset(ev.event_type.event_type.name, 0, MAX_EVENT_NAME); | |
1067 | strncpy(ev.event_type.event_type.name, name, MAX_EVENT_NAME - 1); | |
1068 | ||
1069 | ev.event_type.header.type = PERF_RECORD_HEADER_EVENT_TYPE; | |
1070 | size = strlen(name); | |
1071 | size = ALIGN(size, sizeof(u64)); | |
1072 | ev.event_type.header.size = sizeof(ev.event_type) - | |
1073 | (sizeof(ev.event_type.event_type.name) - size); | |
1074 | ||
640c03ce | 1075 | err = process(&ev, NULL, session); |
cd19a035 TZ |
1076 | |
1077 | return err; | |
1078 | } | |
1079 | ||
8115d60c ACM |
1080 | int perf_event__synthesize_event_types(perf_event__handler_t process, |
1081 | struct perf_session *session) | |
cd19a035 TZ |
1082 | { |
1083 | struct perf_trace_event_type *type; | |
1084 | int i, err = 0; | |
1085 | ||
1086 | for (i = 0; i < event_count; i++) { | |
1087 | type = &events[i]; | |
1088 | ||
8115d60c ACM |
1089 | err = perf_event__synthesize_event_type(type->event_id, |
1090 | type->name, process, | |
1091 | session); | |
cd19a035 TZ |
1092 | if (err) { |
1093 | pr_debug("failed to create perf header event type\n"); | |
1094 | return err; | |
1095 | } | |
1096 | } | |
1097 | ||
1098 | return err; | |
1099 | } | |
1100 | ||
8115d60c ACM |
1101 | int perf_event__process_event_type(union perf_event *event, |
1102 | struct perf_session *session __unused) | |
cd19a035 | 1103 | { |
8115d60c ACM |
1104 | if (perf_header__push_event(event->event_type.event_type.event_id, |
1105 | event->event_type.event_type.name) < 0) | |
cd19a035 TZ |
1106 | return -ENOMEM; |
1107 | ||
1108 | return 0; | |
1109 | } | |
9215545e | 1110 | |
8115d60c ACM |
1111 | int perf_event__synthesize_tracing_data(int fd, struct perf_evlist *evlist, |
1112 | perf_event__handler_t process, | |
9215545e TZ |
1113 | struct perf_session *session __unused) |
1114 | { | |
8115d60c | 1115 | union perf_event ev; |
9215545e | 1116 | ssize_t size = 0, aligned_size = 0, padding; |
fb7d0b3c | 1117 | int err __used = 0; |
9215545e TZ |
1118 | |
1119 | memset(&ev, 0, sizeof(ev)); | |
1120 | ||
1121 | ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA; | |
361c99a6 | 1122 | size = read_tracing_data_size(fd, &evlist->entries); |
9215545e TZ |
1123 | if (size <= 0) |
1124 | return size; | |
1125 | aligned_size = ALIGN(size, sizeof(u64)); | |
1126 | padding = aligned_size - size; | |
1127 | ev.tracing_data.header.size = sizeof(ev.tracing_data); | |
1128 | ev.tracing_data.size = aligned_size; | |
1129 | ||
640c03ce | 1130 | process(&ev, NULL, session); |
9215545e | 1131 | |
361c99a6 | 1132 | err = read_tracing_data(fd, &evlist->entries); |
9215545e TZ |
1133 | write_padded(fd, NULL, 0, padding); |
1134 | ||
1135 | return aligned_size; | |
1136 | } | |
1137 | ||
8115d60c ACM |
1138 | int perf_event__process_tracing_data(union perf_event *event, |
1139 | struct perf_session *session) | |
9215545e | 1140 | { |
8115d60c | 1141 | ssize_t size_read, padding, size = event->tracing_data.size; |
9215545e TZ |
1142 | off_t offset = lseek(session->fd, 0, SEEK_CUR); |
1143 | char buf[BUFSIZ]; | |
1144 | ||
1145 | /* setup for reading amidst mmap */ | |
1146 | lseek(session->fd, offset + sizeof(struct tracing_data_event), | |
1147 | SEEK_SET); | |
1148 | ||
454c407e | 1149 | size_read = trace_report(session->fd, session->repipe); |
9215545e TZ |
1150 | |
1151 | padding = ALIGN(size_read, sizeof(u64)) - size_read; | |
1152 | ||
1153 | if (read(session->fd, buf, padding) < 0) | |
1154 | die("reading input file"); | |
454c407e TZ |
1155 | if (session->repipe) { |
1156 | int retw = write(STDOUT_FILENO, buf, padding); | |
1157 | if (retw <= 0 || retw != padding) | |
1158 | die("repiping tracing data padding"); | |
1159 | } | |
9215545e TZ |
1160 | |
1161 | if (size_read + padding != size) | |
1162 | die("tracing data size mismatch"); | |
1163 | ||
1164 | return size_read + padding; | |
1165 | } | |
c7929e47 | 1166 | |
8115d60c ACM |
1167 | int perf_event__synthesize_build_id(struct dso *pos, u16 misc, |
1168 | perf_event__handler_t process, | |
1169 | struct machine *machine, | |
1170 | struct perf_session *session) | |
c7929e47 | 1171 | { |
8115d60c | 1172 | union perf_event ev; |
c7929e47 TZ |
1173 | size_t len; |
1174 | int err = 0; | |
1175 | ||
1176 | if (!pos->hit) | |
1177 | return err; | |
1178 | ||
1179 | memset(&ev, 0, sizeof(ev)); | |
1180 | ||
1181 | len = pos->long_name_len + 1; | |
1182 | len = ALIGN(len, NAME_ALIGN); | |
1183 | memcpy(&ev.build_id.build_id, pos->build_id, sizeof(pos->build_id)); | |
1184 | ev.build_id.header.type = PERF_RECORD_HEADER_BUILD_ID; | |
1185 | ev.build_id.header.misc = misc; | |
23346f21 | 1186 | ev.build_id.pid = machine->pid; |
c7929e47 TZ |
1187 | ev.build_id.header.size = sizeof(ev.build_id) + len; |
1188 | memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len); | |
1189 | ||
640c03ce | 1190 | err = process(&ev, NULL, session); |
c7929e47 TZ |
1191 | |
1192 | return err; | |
1193 | } | |
1194 | ||
8115d60c ACM |
1195 | int perf_event__process_build_id(union perf_event *event, |
1196 | struct perf_session *session) | |
c7929e47 | 1197 | { |
8115d60c ACM |
1198 | __event_process_build_id(&event->build_id, |
1199 | event->build_id.filename, | |
a1645ce1 | 1200 | session); |
c7929e47 TZ |
1201 | return 0; |
1202 | } | |
a1ac1d3c SE |
1203 | |
1204 | void disable_buildid_cache(void) | |
1205 | { | |
1206 | no_buildid_cache = true; | |
1207 | } |