Commit | Line | Data |
---|---|---|
b8f46c5a XG |
1 | #define _FILE_OFFSET_BITS 64 |
2 | ||
a9072bc0 | 3 | #include "util.h" |
7c6a1c65 | 4 | #include <sys/types.h> |
ba21594c | 5 | #include <byteswap.h> |
7c6a1c65 PZ |
6 | #include <unistd.h> |
7 | #include <stdio.h> | |
8 | #include <stdlib.h> | |
8671dab9 | 9 | #include <linux/list.h> |
ba21594c | 10 | #include <linux/kernel.h> |
fbe96f29 | 11 | #include <sys/utsname.h> |
7c6a1c65 | 12 | |
361c99a6 | 13 | #include "evlist.h" |
a91e5431 | 14 | #include "evsel.h" |
7c6a1c65 | 15 | #include "header.h" |
03456a15 FW |
16 | #include "../perf.h" |
17 | #include "trace-event.h" | |
301a0b02 | 18 | #include "session.h" |
8671dab9 | 19 | #include "symbol.h" |
4778d2e4 | 20 | #include "debug.h" |
fbe96f29 | 21 | #include "cpumap.h" |
7c6a1c65 | 22 | |
a1ac1d3c SE |
23 | static bool no_buildid_cache = false; |
24 | ||
8755a8f2 AV |
25 | static int event_count; |
26 | static struct perf_trace_event_type *events; | |
27 | ||
fbe96f29 SE |
28 | static u32 header_argc; |
29 | static const char **header_argv; | |
30 | ||
31 | static int dsos__write_buildid_table(struct perf_header *header, int fd); | |
32 | static int perf_session__cache_build_ids(struct perf_session *session); | |
33 | ||
ae99fb2c | 34 | int perf_header__push_event(u64 id, const char *name) |
8755a8f2 | 35 | { |
ec60a3fe | 36 | if (strlen(name) > MAX_EVENT_NAME) |
6beba7ad | 37 | pr_warning("Event %s will be truncated\n", name); |
8755a8f2 AV |
38 | |
39 | if (!events) { | |
40 | events = malloc(sizeof(struct perf_trace_event_type)); | |
ae99fb2c ACM |
41 | if (events == NULL) |
42 | return -ENOMEM; | |
8755a8f2 | 43 | } else { |
ae99fb2c ACM |
44 | struct perf_trace_event_type *nevents; |
45 | ||
46 | nevents = realloc(events, (event_count + 1) * sizeof(*events)); | |
47 | if (nevents == NULL) | |
48 | return -ENOMEM; | |
49 | events = nevents; | |
8755a8f2 AV |
50 | } |
51 | memset(&events[event_count], 0, sizeof(struct perf_trace_event_type)); | |
52 | events[event_count].event_id = id; | |
ec60a3fe | 53 | strncpy(events[event_count].name, name, MAX_EVENT_NAME - 1); |
8755a8f2 | 54 | event_count++; |
ae99fb2c | 55 | return 0; |
8755a8f2 AV |
56 | } |
57 | ||
58 | char *perf_header__find_event(u64 id) | |
59 | { | |
60 | int i; | |
61 | for (i = 0 ; i < event_count; i++) { | |
62 | if (events[i].event_id == id) | |
63 | return events[i].name; | |
64 | } | |
65 | return NULL; | |
66 | } | |
67 | ||
7c6a1c65 PZ |
68 | static const char *__perf_magic = "PERFFILE"; |
69 | ||
70 | #define PERF_MAGIC (*(u64 *)__perf_magic) | |
71 | ||
7c6a1c65 | 72 | struct perf_file_attr { |
cdd6c482 | 73 | struct perf_event_attr attr; |
7c6a1c65 PZ |
74 | struct perf_file_section ids; |
75 | }; | |
76 | ||
1c0b04d1 | 77 | void perf_header__set_feat(struct perf_header *header, int feat) |
8d06367f | 78 | { |
1c0b04d1 | 79 | set_bit(feat, header->adds_features); |
8d06367f ACM |
80 | } |
81 | ||
1c0b04d1 | 82 | void perf_header__clear_feat(struct perf_header *header, int feat) |
baa2f6ce | 83 | { |
1c0b04d1 | 84 | clear_bit(feat, header->adds_features); |
baa2f6ce ACM |
85 | } |
86 | ||
1c0b04d1 | 87 | bool perf_header__has_feat(const struct perf_header *header, int feat) |
8d06367f | 88 | { |
1c0b04d1 | 89 | return test_bit(feat, header->adds_features); |
8d06367f ACM |
90 | } |
91 | ||
3726cc75 | 92 | static int do_write(int fd, const void *buf, size_t size) |
7c6a1c65 PZ |
93 | { |
94 | while (size) { | |
95 | int ret = write(fd, buf, size); | |
96 | ||
97 | if (ret < 0) | |
d5eed904 | 98 | return -errno; |
7c6a1c65 PZ |
99 | |
100 | size -= ret; | |
101 | buf += ret; | |
102 | } | |
3726cc75 ACM |
103 | |
104 | return 0; | |
7c6a1c65 PZ |
105 | } |
106 | ||
f92cb24c ACM |
107 | #define NAME_ALIGN 64 |
108 | ||
109 | static int write_padded(int fd, const void *bf, size_t count, | |
110 | size_t count_aligned) | |
111 | { | |
112 | static const char zero_buf[NAME_ALIGN]; | |
113 | int err = do_write(fd, bf, count); | |
114 | ||
115 | if (!err) | |
116 | err = do_write(fd, zero_buf, count_aligned - count); | |
117 | ||
118 | return err; | |
119 | } | |
120 | ||
fbe96f29 SE |
121 | static int do_write_string(int fd, const char *str) |
122 | { | |
123 | u32 len, olen; | |
124 | int ret; | |
125 | ||
126 | olen = strlen(str) + 1; | |
127 | len = ALIGN(olen, NAME_ALIGN); | |
128 | ||
129 | /* write len, incl. \0 */ | |
130 | ret = do_write(fd, &len, sizeof(len)); | |
131 | if (ret < 0) | |
132 | return ret; | |
133 | ||
134 | return write_padded(fd, str, olen, len); | |
135 | } | |
136 | ||
137 | static char *do_read_string(int fd, struct perf_header *ph) | |
138 | { | |
139 | ssize_t sz, ret; | |
140 | u32 len; | |
141 | char *buf; | |
142 | ||
143 | sz = read(fd, &len, sizeof(len)); | |
144 | if (sz < (ssize_t)sizeof(len)) | |
145 | return NULL; | |
146 | ||
147 | if (ph->needs_swap) | |
148 | len = bswap_32(len); | |
149 | ||
150 | buf = malloc(len); | |
151 | if (!buf) | |
152 | return NULL; | |
153 | ||
154 | ret = read(fd, buf, len); | |
155 | if (ret == (ssize_t)len) { | |
156 | /* | |
157 | * strings are padded by zeroes | |
158 | * thus the actual strlen of buf | |
159 | * may be less than len | |
160 | */ | |
161 | return buf; | |
162 | } | |
163 | ||
164 | free(buf); | |
165 | return NULL; | |
166 | } | |
167 | ||
168 | int | |
169 | perf_header__set_cmdline(int argc, const char **argv) | |
170 | { | |
171 | int i; | |
172 | ||
173 | header_argc = (u32)argc; | |
174 | ||
175 | /* do not include NULL termination */ | |
176 | header_argv = calloc(argc, sizeof(char *)); | |
177 | if (!header_argv) | |
178 | return -ENOMEM; | |
179 | ||
180 | /* | |
181 | * must copy argv contents because it gets moved | |
182 | * around during option parsing | |
183 | */ | |
184 | for (i = 0; i < argc ; i++) | |
185 | header_argv[i] = argv[i]; | |
186 | ||
187 | return 0; | |
188 | } | |
189 | ||
190 | static int write_trace_info(int fd, struct perf_header *h __used, | |
191 | struct perf_evlist *evlist) | |
192 | { | |
193 | return read_tracing_data(fd, &evlist->entries); | |
194 | } | |
195 | ||
196 | ||
197 | static int write_build_id(int fd, struct perf_header *h, | |
198 | struct perf_evlist *evlist __used) | |
199 | { | |
200 | struct perf_session *session; | |
201 | int err; | |
202 | ||
203 | session = container_of(h, struct perf_session, header); | |
204 | ||
205 | err = dsos__write_buildid_table(h, fd); | |
206 | if (err < 0) { | |
207 | pr_debug("failed to write buildid table\n"); | |
208 | return err; | |
209 | } | |
210 | if (!no_buildid_cache) | |
211 | perf_session__cache_build_ids(session); | |
212 | ||
213 | return 0; | |
214 | } | |
215 | ||
216 | static int write_hostname(int fd, struct perf_header *h __used, | |
217 | struct perf_evlist *evlist __used) | |
218 | { | |
219 | struct utsname uts; | |
220 | int ret; | |
221 | ||
222 | ret = uname(&uts); | |
223 | if (ret < 0) | |
224 | return -1; | |
225 | ||
226 | return do_write_string(fd, uts.nodename); | |
227 | } | |
228 | ||
229 | static int write_osrelease(int fd, struct perf_header *h __used, | |
230 | struct perf_evlist *evlist __used) | |
231 | { | |
232 | struct utsname uts; | |
233 | int ret; | |
234 | ||
235 | ret = uname(&uts); | |
236 | if (ret < 0) | |
237 | return -1; | |
238 | ||
239 | return do_write_string(fd, uts.release); | |
240 | } | |
241 | ||
242 | static int write_arch(int fd, struct perf_header *h __used, | |
243 | struct perf_evlist *evlist __used) | |
244 | { | |
245 | struct utsname uts; | |
246 | int ret; | |
247 | ||
248 | ret = uname(&uts); | |
249 | if (ret < 0) | |
250 | return -1; | |
251 | ||
252 | return do_write_string(fd, uts.machine); | |
253 | } | |
254 | ||
255 | static int write_version(int fd, struct perf_header *h __used, | |
256 | struct perf_evlist *evlist __used) | |
257 | { | |
258 | return do_write_string(fd, perf_version_string); | |
259 | } | |
260 | ||
261 | static int write_cpudesc(int fd, struct perf_header *h __used, | |
262 | struct perf_evlist *evlist __used) | |
263 | { | |
264 | #ifndef CPUINFO_PROC | |
265 | #define CPUINFO_PROC NULL | |
266 | #endif | |
267 | FILE *file; | |
268 | char *buf = NULL; | |
269 | char *s, *p; | |
270 | const char *search = CPUINFO_PROC; | |
271 | size_t len = 0; | |
272 | int ret = -1; | |
273 | ||
274 | if (!search) | |
275 | return -1; | |
276 | ||
277 | file = fopen("/proc/cpuinfo", "r"); | |
278 | if (!file) | |
279 | return -1; | |
280 | ||
281 | while (getline(&buf, &len, file) > 0) { | |
282 | ret = strncmp(buf, search, strlen(search)); | |
283 | if (!ret) | |
284 | break; | |
285 | } | |
286 | ||
287 | if (ret) | |
288 | goto done; | |
289 | ||
290 | s = buf; | |
291 | ||
292 | p = strchr(buf, ':'); | |
293 | if (p && *(p+1) == ' ' && *(p+2)) | |
294 | s = p + 2; | |
295 | p = strchr(s, '\n'); | |
296 | if (p) | |
297 | *p = '\0'; | |
298 | ||
299 | /* squash extra space characters (branding string) */ | |
300 | p = s; | |
301 | while (*p) { | |
302 | if (isspace(*p)) { | |
303 | char *r = p + 1; | |
304 | char *q = r; | |
305 | *p = ' '; | |
306 | while (*q && isspace(*q)) | |
307 | q++; | |
308 | if (q != (p+1)) | |
309 | while ((*r++ = *q++)); | |
310 | } | |
311 | p++; | |
312 | } | |
313 | ret = do_write_string(fd, s); | |
314 | done: | |
315 | free(buf); | |
316 | fclose(file); | |
317 | return ret; | |
318 | } | |
319 | ||
320 | static int write_nrcpus(int fd, struct perf_header *h __used, | |
321 | struct perf_evlist *evlist __used) | |
322 | { | |
323 | long nr; | |
324 | u32 nrc, nra; | |
325 | int ret; | |
326 | ||
327 | nr = sysconf(_SC_NPROCESSORS_CONF); | |
328 | if (nr < 0) | |
329 | return -1; | |
330 | ||
331 | nrc = (u32)(nr & UINT_MAX); | |
332 | ||
333 | nr = sysconf(_SC_NPROCESSORS_ONLN); | |
334 | if (nr < 0) | |
335 | return -1; | |
336 | ||
337 | nra = (u32)(nr & UINT_MAX); | |
338 | ||
339 | ret = do_write(fd, &nrc, sizeof(nrc)); | |
340 | if (ret < 0) | |
341 | return ret; | |
342 | ||
343 | return do_write(fd, &nra, sizeof(nra)); | |
344 | } | |
345 | ||
346 | static int write_event_desc(int fd, struct perf_header *h __used, | |
347 | struct perf_evlist *evlist) | |
348 | { | |
349 | struct perf_evsel *attr; | |
350 | u32 nre = 0, nri, sz; | |
351 | int ret; | |
352 | ||
353 | list_for_each_entry(attr, &evlist->entries, node) | |
354 | nre++; | |
355 | ||
356 | /* | |
357 | * write number of events | |
358 | */ | |
359 | ret = do_write(fd, &nre, sizeof(nre)); | |
360 | if (ret < 0) | |
361 | return ret; | |
362 | ||
363 | /* | |
364 | * size of perf_event_attr struct | |
365 | */ | |
366 | sz = (u32)sizeof(attr->attr); | |
367 | ret = do_write(fd, &sz, sizeof(sz)); | |
368 | if (ret < 0) | |
369 | return ret; | |
370 | ||
371 | list_for_each_entry(attr, &evlist->entries, node) { | |
372 | ||
373 | ret = do_write(fd, &attr->attr, sz); | |
374 | if (ret < 0) | |
375 | return ret; | |
376 | /* | |
377 | * write number of unique id per event | |
378 | * there is one id per instance of an event | |
379 | * | |
380 | * copy into an nri to be independent of the | |
381 | * type of ids, | |
382 | */ | |
383 | nri = attr->ids; | |
384 | ret = do_write(fd, &nri, sizeof(nri)); | |
385 | if (ret < 0) | |
386 | return ret; | |
387 | ||
388 | /* | |
389 | * write event string as passed on cmdline | |
390 | */ | |
6340cfed | 391 | ret = do_write_string(fd, event_name(attr)); |
fbe96f29 SE |
392 | if (ret < 0) |
393 | return ret; | |
394 | /* | |
395 | * write unique ids for this event | |
396 | */ | |
397 | ret = do_write(fd, attr->id, attr->ids * sizeof(u64)); | |
398 | if (ret < 0) | |
399 | return ret; | |
400 | } | |
401 | return 0; | |
402 | } | |
403 | ||
404 | static int write_cmdline(int fd, struct perf_header *h __used, | |
405 | struct perf_evlist *evlist __used) | |
406 | { | |
407 | char buf[MAXPATHLEN]; | |
408 | char proc[32]; | |
409 | u32 i, n; | |
410 | int ret; | |
411 | ||
412 | /* | |
413 | * actual atual path to perf binary | |
414 | */ | |
415 | sprintf(proc, "/proc/%d/exe", getpid()); | |
416 | ret = readlink(proc, buf, sizeof(buf)); | |
417 | if (ret <= 0) | |
418 | return -1; | |
419 | ||
420 | /* readlink() does not add null termination */ | |
421 | buf[ret] = '\0'; | |
422 | ||
423 | /* account for binary path */ | |
424 | n = header_argc + 1; | |
425 | ||
426 | ret = do_write(fd, &n, sizeof(n)); | |
427 | if (ret < 0) | |
428 | return ret; | |
429 | ||
430 | ret = do_write_string(fd, buf); | |
431 | if (ret < 0) | |
432 | return ret; | |
433 | ||
434 | for (i = 0 ; i < header_argc; i++) { | |
435 | ret = do_write_string(fd, header_argv[i]); | |
436 | if (ret < 0) | |
437 | return ret; | |
438 | } | |
439 | return 0; | |
440 | } | |
441 | ||
442 | #define CORE_SIB_FMT \ | |
443 | "/sys/devices/system/cpu/cpu%d/topology/core_siblings_list" | |
444 | #define THRD_SIB_FMT \ | |
445 | "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list" | |
446 | ||
447 | struct cpu_topo { | |
448 | u32 core_sib; | |
449 | u32 thread_sib; | |
450 | char **core_siblings; | |
451 | char **thread_siblings; | |
452 | }; | |
453 | ||
454 | static int build_cpu_topo(struct cpu_topo *tp, int cpu) | |
455 | { | |
456 | FILE *fp; | |
457 | char filename[MAXPATHLEN]; | |
458 | char *buf = NULL, *p; | |
459 | size_t len = 0; | |
460 | u32 i = 0; | |
461 | int ret = -1; | |
462 | ||
463 | sprintf(filename, CORE_SIB_FMT, cpu); | |
464 | fp = fopen(filename, "r"); | |
465 | if (!fp) | |
466 | return -1; | |
467 | ||
468 | if (getline(&buf, &len, fp) <= 0) | |
469 | goto done; | |
470 | ||
471 | fclose(fp); | |
472 | ||
473 | p = strchr(buf, '\n'); | |
474 | if (p) | |
475 | *p = '\0'; | |
476 | ||
477 | for (i = 0; i < tp->core_sib; i++) { | |
478 | if (!strcmp(buf, tp->core_siblings[i])) | |
479 | break; | |
480 | } | |
481 | if (i == tp->core_sib) { | |
482 | tp->core_siblings[i] = buf; | |
483 | tp->core_sib++; | |
484 | buf = NULL; | |
485 | len = 0; | |
486 | } | |
487 | ||
488 | sprintf(filename, THRD_SIB_FMT, cpu); | |
489 | fp = fopen(filename, "r"); | |
490 | if (!fp) | |
491 | goto done; | |
492 | ||
493 | if (getline(&buf, &len, fp) <= 0) | |
494 | goto done; | |
495 | ||
496 | p = strchr(buf, '\n'); | |
497 | if (p) | |
498 | *p = '\0'; | |
499 | ||
500 | for (i = 0; i < tp->thread_sib; i++) { | |
501 | if (!strcmp(buf, tp->thread_siblings[i])) | |
502 | break; | |
503 | } | |
504 | if (i == tp->thread_sib) { | |
505 | tp->thread_siblings[i] = buf; | |
506 | tp->thread_sib++; | |
507 | buf = NULL; | |
508 | } | |
509 | ret = 0; | |
510 | done: | |
511 | if(fp) | |
512 | fclose(fp); | |
513 | free(buf); | |
514 | return ret; | |
515 | } | |
516 | ||
517 | static void free_cpu_topo(struct cpu_topo *tp) | |
518 | { | |
519 | u32 i; | |
520 | ||
521 | if (!tp) | |
522 | return; | |
523 | ||
524 | for (i = 0 ; i < tp->core_sib; i++) | |
525 | free(tp->core_siblings[i]); | |
526 | ||
527 | for (i = 0 ; i < tp->thread_sib; i++) | |
528 | free(tp->thread_siblings[i]); | |
529 | ||
530 | free(tp); | |
531 | } | |
532 | ||
533 | static struct cpu_topo *build_cpu_topology(void) | |
534 | { | |
535 | struct cpu_topo *tp; | |
536 | void *addr; | |
537 | u32 nr, i; | |
538 | size_t sz; | |
539 | long ncpus; | |
540 | int ret = -1; | |
541 | ||
542 | ncpus = sysconf(_SC_NPROCESSORS_CONF); | |
543 | if (ncpus < 0) | |
544 | return NULL; | |
545 | ||
546 | nr = (u32)(ncpus & UINT_MAX); | |
547 | ||
548 | sz = nr * sizeof(char *); | |
549 | ||
550 | addr = calloc(1, sizeof(*tp) + 2 * sz); | |
551 | if (!addr) | |
552 | return NULL; | |
553 | ||
554 | tp = addr; | |
555 | ||
556 | addr += sizeof(*tp); | |
557 | tp->core_siblings = addr; | |
558 | addr += sz; | |
559 | tp->thread_siblings = addr; | |
560 | ||
561 | for (i = 0; i < nr; i++) { | |
562 | ret = build_cpu_topo(tp, i); | |
563 | if (ret < 0) | |
564 | break; | |
565 | } | |
566 | if (ret) { | |
567 | free_cpu_topo(tp); | |
568 | tp = NULL; | |
569 | } | |
570 | return tp; | |
571 | } | |
572 | ||
573 | static int write_cpu_topology(int fd, struct perf_header *h __used, | |
574 | struct perf_evlist *evlist __used) | |
575 | { | |
576 | struct cpu_topo *tp; | |
577 | u32 i; | |
578 | int ret; | |
579 | ||
580 | tp = build_cpu_topology(); | |
581 | if (!tp) | |
582 | return -1; | |
583 | ||
584 | ret = do_write(fd, &tp->core_sib, sizeof(tp->core_sib)); | |
585 | if (ret < 0) | |
586 | goto done; | |
587 | ||
588 | for (i = 0; i < tp->core_sib; i++) { | |
589 | ret = do_write_string(fd, tp->core_siblings[i]); | |
590 | if (ret < 0) | |
591 | goto done; | |
592 | } | |
593 | ret = do_write(fd, &tp->thread_sib, sizeof(tp->thread_sib)); | |
594 | if (ret < 0) | |
595 | goto done; | |
596 | ||
597 | for (i = 0; i < tp->thread_sib; i++) { | |
598 | ret = do_write_string(fd, tp->thread_siblings[i]); | |
599 | if (ret < 0) | |
600 | break; | |
601 | } | |
602 | done: | |
603 | free_cpu_topo(tp); | |
604 | return ret; | |
605 | } | |
606 | ||
607 | ||
608 | ||
609 | static int write_total_mem(int fd, struct perf_header *h __used, | |
610 | struct perf_evlist *evlist __used) | |
611 | { | |
612 | char *buf = NULL; | |
613 | FILE *fp; | |
614 | size_t len = 0; | |
615 | int ret = -1, n; | |
616 | uint64_t mem; | |
617 | ||
618 | fp = fopen("/proc/meminfo", "r"); | |
619 | if (!fp) | |
620 | return -1; | |
621 | ||
622 | while (getline(&buf, &len, fp) > 0) { | |
623 | ret = strncmp(buf, "MemTotal:", 9); | |
624 | if (!ret) | |
625 | break; | |
626 | } | |
627 | if (!ret) { | |
628 | n = sscanf(buf, "%*s %"PRIu64, &mem); | |
629 | if (n == 1) | |
630 | ret = do_write(fd, &mem, sizeof(mem)); | |
631 | } | |
632 | free(buf); | |
633 | fclose(fp); | |
634 | return ret; | |
635 | } | |
636 | ||
637 | static int write_topo_node(int fd, int node) | |
638 | { | |
639 | char str[MAXPATHLEN]; | |
640 | char field[32]; | |
641 | char *buf = NULL, *p; | |
642 | size_t len = 0; | |
643 | FILE *fp; | |
644 | u64 mem_total, mem_free, mem; | |
645 | int ret = -1; | |
646 | ||
647 | sprintf(str, "/sys/devices/system/node/node%d/meminfo", node); | |
648 | fp = fopen(str, "r"); | |
649 | if (!fp) | |
650 | return -1; | |
651 | ||
652 | while (getline(&buf, &len, fp) > 0) { | |
653 | /* skip over invalid lines */ | |
654 | if (!strchr(buf, ':')) | |
655 | continue; | |
656 | if (sscanf(buf, "%*s %*d %s %"PRIu64, field, &mem) != 2) | |
657 | goto done; | |
658 | if (!strcmp(field, "MemTotal:")) | |
659 | mem_total = mem; | |
660 | if (!strcmp(field, "MemFree:")) | |
661 | mem_free = mem; | |
662 | } | |
663 | ||
664 | fclose(fp); | |
665 | ||
666 | ret = do_write(fd, &mem_total, sizeof(u64)); | |
667 | if (ret) | |
668 | goto done; | |
669 | ||
670 | ret = do_write(fd, &mem_free, sizeof(u64)); | |
671 | if (ret) | |
672 | goto done; | |
673 | ||
674 | ret = -1; | |
675 | sprintf(str, "/sys/devices/system/node/node%d/cpulist", node); | |
676 | ||
677 | fp = fopen(str, "r"); | |
678 | if (!fp) | |
679 | goto done; | |
680 | ||
681 | if (getline(&buf, &len, fp) <= 0) | |
682 | goto done; | |
683 | ||
684 | p = strchr(buf, '\n'); | |
685 | if (p) | |
686 | *p = '\0'; | |
687 | ||
688 | ret = do_write_string(fd, buf); | |
689 | done: | |
690 | free(buf); | |
691 | fclose(fp); | |
692 | return ret; | |
693 | } | |
694 | ||
695 | static int write_numa_topology(int fd, struct perf_header *h __used, | |
696 | struct perf_evlist *evlist __used) | |
697 | { | |
698 | char *buf = NULL; | |
699 | size_t len = 0; | |
700 | FILE *fp; | |
701 | struct cpu_map *node_map = NULL; | |
702 | char *c; | |
703 | u32 nr, i, j; | |
704 | int ret = -1; | |
705 | ||
706 | fp = fopen("/sys/devices/system/node/online", "r"); | |
707 | if (!fp) | |
708 | return -1; | |
709 | ||
710 | if (getline(&buf, &len, fp) <= 0) | |
711 | goto done; | |
712 | ||
713 | c = strchr(buf, '\n'); | |
714 | if (c) | |
715 | *c = '\0'; | |
716 | ||
717 | node_map = cpu_map__new(buf); | |
718 | if (!node_map) | |
719 | goto done; | |
720 | ||
721 | nr = (u32)node_map->nr; | |
722 | ||
723 | ret = do_write(fd, &nr, sizeof(nr)); | |
724 | if (ret < 0) | |
725 | goto done; | |
726 | ||
727 | for (i = 0; i < nr; i++) { | |
728 | j = (u32)node_map->map[i]; | |
729 | ret = do_write(fd, &j, sizeof(j)); | |
730 | if (ret < 0) | |
731 | break; | |
732 | ||
733 | ret = write_topo_node(fd, i); | |
734 | if (ret < 0) | |
735 | break; | |
736 | } | |
737 | done: | |
738 | free(buf); | |
739 | fclose(fp); | |
740 | free(node_map); | |
741 | return ret; | |
742 | } | |
743 | ||
744 | /* | |
745 | * default get_cpuid(): nothing gets recorded | |
746 | * actual implementation must be in arch/$(ARCH)/util/header.c | |
747 | */ | |
748 | int __attribute__((weak)) get_cpuid(char *buffer __used, size_t sz __used) | |
749 | { | |
750 | return -1; | |
751 | } | |
752 | ||
753 | static int write_cpuid(int fd, struct perf_header *h __used, | |
754 | struct perf_evlist *evlist __used) | |
755 | { | |
756 | char buffer[64]; | |
757 | int ret; | |
758 | ||
759 | ret = get_cpuid(buffer, sizeof(buffer)); | |
760 | if (!ret) | |
761 | goto write_it; | |
762 | ||
763 | return -1; | |
764 | write_it: | |
765 | return do_write_string(fd, buffer); | |
766 | } | |
767 | ||
768 | static void print_hostname(struct perf_header *ph, int fd, FILE *fp) | |
769 | { | |
770 | char *str = do_read_string(fd, ph); | |
771 | fprintf(fp, "# hostname : %s\n", str); | |
772 | free(str); | |
773 | } | |
774 | ||
775 | static void print_osrelease(struct perf_header *ph, int fd, FILE *fp) | |
776 | { | |
777 | char *str = do_read_string(fd, ph); | |
778 | fprintf(fp, "# os release : %s\n", str); | |
779 | free(str); | |
780 | } | |
781 | ||
782 | static void print_arch(struct perf_header *ph, int fd, FILE *fp) | |
783 | { | |
784 | char *str = do_read_string(fd, ph); | |
785 | fprintf(fp, "# arch : %s\n", str); | |
786 | free(str); | |
787 | } | |
788 | ||
789 | static void print_cpudesc(struct perf_header *ph, int fd, FILE *fp) | |
790 | { | |
791 | char *str = do_read_string(fd, ph); | |
792 | fprintf(fp, "# cpudesc : %s\n", str); | |
793 | free(str); | |
794 | } | |
795 | ||
796 | static void print_nrcpus(struct perf_header *ph, int fd, FILE *fp) | |
797 | { | |
798 | ssize_t ret; | |
799 | u32 nr; | |
800 | ||
801 | ret = read(fd, &nr, sizeof(nr)); | |
802 | if (ret != (ssize_t)sizeof(nr)) | |
803 | nr = -1; /* interpreted as error */ | |
804 | ||
805 | if (ph->needs_swap) | |
806 | nr = bswap_32(nr); | |
807 | ||
808 | fprintf(fp, "# nrcpus online : %u\n", nr); | |
809 | ||
810 | ret = read(fd, &nr, sizeof(nr)); | |
811 | if (ret != (ssize_t)sizeof(nr)) | |
812 | nr = -1; /* interpreted as error */ | |
813 | ||
814 | if (ph->needs_swap) | |
815 | nr = bswap_32(nr); | |
816 | ||
817 | fprintf(fp, "# nrcpus avail : %u\n", nr); | |
818 | } | |
819 | ||
820 | static void print_version(struct perf_header *ph, int fd, FILE *fp) | |
821 | { | |
822 | char *str = do_read_string(fd, ph); | |
823 | fprintf(fp, "# perf version : %s\n", str); | |
824 | free(str); | |
825 | } | |
826 | ||
827 | static void print_cmdline(struct perf_header *ph, int fd, FILE *fp) | |
828 | { | |
829 | ssize_t ret; | |
830 | char *str; | |
831 | u32 nr, i; | |
832 | ||
833 | ret = read(fd, &nr, sizeof(nr)); | |
834 | if (ret != (ssize_t)sizeof(nr)) | |
835 | return; | |
836 | ||
837 | if (ph->needs_swap) | |
838 | nr = bswap_32(nr); | |
839 | ||
840 | fprintf(fp, "# cmdline : "); | |
841 | ||
842 | for (i = 0; i < nr; i++) { | |
843 | str = do_read_string(fd, ph); | |
844 | fprintf(fp, "%s ", str); | |
845 | free(str); | |
846 | } | |
847 | fputc('\n', fp); | |
848 | } | |
849 | ||
850 | static void print_cpu_topology(struct perf_header *ph, int fd, FILE *fp) | |
851 | { | |
852 | ssize_t ret; | |
853 | u32 nr, i; | |
854 | char *str; | |
855 | ||
856 | ret = read(fd, &nr, sizeof(nr)); | |
857 | if (ret != (ssize_t)sizeof(nr)) | |
858 | return; | |
859 | ||
860 | if (ph->needs_swap) | |
861 | nr = bswap_32(nr); | |
862 | ||
863 | for (i = 0; i < nr; i++) { | |
864 | str = do_read_string(fd, ph); | |
865 | fprintf(fp, "# sibling cores : %s\n", str); | |
866 | free(str); | |
867 | } | |
868 | ||
869 | ret = read(fd, &nr, sizeof(nr)); | |
870 | if (ret != (ssize_t)sizeof(nr)) | |
871 | return; | |
872 | ||
873 | if (ph->needs_swap) | |
874 | nr = bswap_32(nr); | |
875 | ||
876 | for (i = 0; i < nr; i++) { | |
877 | str = do_read_string(fd, ph); | |
878 | fprintf(fp, "# sibling threads : %s\n", str); | |
879 | free(str); | |
880 | } | |
881 | } | |
882 | ||
883 | static void print_event_desc(struct perf_header *ph, int fd, FILE *fp) | |
884 | { | |
885 | struct perf_event_attr attr; | |
886 | uint64_t id; | |
887 | void *buf = NULL; | |
888 | char *str; | |
889 | u32 nre, sz, nr, i, j, msz; | |
890 | int ret; | |
891 | ||
892 | /* number of events */ | |
893 | ret = read(fd, &nre, sizeof(nre)); | |
894 | if (ret != (ssize_t)sizeof(nre)) | |
895 | goto error; | |
896 | ||
897 | if (ph->needs_swap) | |
898 | nre = bswap_32(nre); | |
899 | ||
900 | ret = read(fd, &sz, sizeof(sz)); | |
901 | if (ret != (ssize_t)sizeof(sz)) | |
902 | goto error; | |
903 | ||
904 | if (ph->needs_swap) | |
905 | sz = bswap_32(sz); | |
906 | ||
907 | /* | |
908 | * ensure it is at least to our ABI rev | |
909 | */ | |
910 | if (sz < (u32)sizeof(attr)) | |
911 | goto error; | |
912 | ||
913 | memset(&attr, 0, sizeof(attr)); | |
914 | ||
915 | /* read entire region to sync up to next field */ | |
916 | buf = malloc(sz); | |
917 | if (!buf) | |
918 | goto error; | |
919 | ||
920 | msz = sizeof(attr); | |
921 | if (sz < msz) | |
922 | msz = sz; | |
923 | ||
924 | for (i = 0 ; i < nre; i++) { | |
925 | ||
926 | ret = read(fd, buf, sz); | |
927 | if (ret != (ssize_t)sz) | |
928 | goto error; | |
929 | ||
930 | if (ph->needs_swap) | |
931 | perf_event__attr_swap(buf); | |
932 | ||
933 | memcpy(&attr, buf, msz); | |
934 | ||
935 | ret = read(fd, &nr, sizeof(nr)); | |
936 | if (ret != (ssize_t)sizeof(nr)) | |
937 | goto error; | |
938 | ||
939 | if (ph->needs_swap) | |
940 | nr = bswap_32(nr); | |
941 | ||
942 | str = do_read_string(fd, ph); | |
943 | fprintf(fp, "# event : name = %s, ", str); | |
944 | free(str); | |
945 | ||
946 | fprintf(fp, "type = %d, config = 0x%"PRIx64 | |
947 | ", config1 = 0x%"PRIx64", config2 = 0x%"PRIx64, | |
948 | attr.type, | |
949 | (u64)attr.config, | |
950 | (u64)attr.config1, | |
951 | (u64)attr.config2); | |
952 | ||
953 | fprintf(fp, ", excl_usr = %d, excl_kern = %d", | |
954 | attr.exclude_user, | |
955 | attr.exclude_kernel); | |
956 | ||
957 | if (nr) | |
958 | fprintf(fp, ", id = {"); | |
959 | ||
960 | for (j = 0 ; j < nr; j++) { | |
961 | ret = read(fd, &id, sizeof(id)); | |
962 | if (ret != (ssize_t)sizeof(id)) | |
963 | goto error; | |
964 | ||
965 | if (ph->needs_swap) | |
966 | id = bswap_64(id); | |
967 | ||
968 | if (j) | |
969 | fputc(',', fp); | |
970 | ||
971 | fprintf(fp, " %"PRIu64, id); | |
972 | } | |
973 | if (nr && j == nr) | |
974 | fprintf(fp, " }"); | |
975 | fputc('\n', fp); | |
976 | } | |
977 | free(buf); | |
978 | return; | |
979 | error: | |
980 | fprintf(fp, "# event desc: not available or unable to read\n"); | |
981 | } | |
982 | ||
983 | static void print_total_mem(struct perf_header *h __used, int fd, FILE *fp) | |
984 | { | |
985 | uint64_t mem; | |
986 | ssize_t ret; | |
987 | ||
988 | ret = read(fd, &mem, sizeof(mem)); | |
989 | if (ret != sizeof(mem)) | |
990 | goto error; | |
991 | ||
992 | if (h->needs_swap) | |
993 | mem = bswap_64(mem); | |
994 | ||
995 | fprintf(fp, "# total memory : %"PRIu64" kB\n", mem); | |
996 | return; | |
997 | error: | |
998 | fprintf(fp, "# total memory : unknown\n"); | |
999 | } | |
1000 | ||
1001 | static void print_numa_topology(struct perf_header *h __used, int fd, FILE *fp) | |
1002 | { | |
1003 | ssize_t ret; | |
1004 | u32 nr, c, i; | |
1005 | char *str; | |
1006 | uint64_t mem_total, mem_free; | |
1007 | ||
1008 | /* nr nodes */ | |
1009 | ret = read(fd, &nr, sizeof(nr)); | |
1010 | if (ret != (ssize_t)sizeof(nr)) | |
1011 | goto error; | |
1012 | ||
1013 | if (h->needs_swap) | |
1014 | nr = bswap_32(nr); | |
1015 | ||
1016 | for (i = 0; i < nr; i++) { | |
1017 | ||
1018 | /* node number */ | |
1019 | ret = read(fd, &c, sizeof(c)); | |
1020 | if (ret != (ssize_t)sizeof(c)) | |
1021 | goto error; | |
1022 | ||
1023 | if (h->needs_swap) | |
1024 | c = bswap_32(c); | |
1025 | ||
1026 | ret = read(fd, &mem_total, sizeof(u64)); | |
1027 | if (ret != sizeof(u64)) | |
1028 | goto error; | |
1029 | ||
1030 | ret = read(fd, &mem_free, sizeof(u64)); | |
1031 | if (ret != sizeof(u64)) | |
1032 | goto error; | |
1033 | ||
1034 | if (h->needs_swap) { | |
1035 | mem_total = bswap_64(mem_total); | |
1036 | mem_free = bswap_64(mem_free); | |
1037 | } | |
1038 | ||
1039 | fprintf(fp, "# node%u meminfo : total = %"PRIu64" kB," | |
1040 | " free = %"PRIu64" kB\n", | |
1041 | c, | |
1042 | mem_total, | |
1043 | mem_free); | |
1044 | ||
1045 | str = do_read_string(fd, h); | |
1046 | fprintf(fp, "# node%u cpu list : %s\n", c, str); | |
1047 | free(str); | |
1048 | } | |
1049 | return; | |
1050 | error: | |
1051 | fprintf(fp, "# numa topology : not available\n"); | |
1052 | } | |
1053 | ||
1054 | static void print_cpuid(struct perf_header *ph, int fd, FILE *fp) | |
1055 | { | |
1056 | char *str = do_read_string(fd, ph); | |
1057 | fprintf(fp, "# cpuid : %s\n", str); | |
1058 | free(str); | |
1059 | } | |
1060 | ||
1061 | struct feature_ops { | |
1062 | int (*write)(int fd, struct perf_header *h, struct perf_evlist *evlist); | |
1063 | void (*print)(struct perf_header *h, int fd, FILE *fp); | |
1064 | const char *name; | |
1065 | bool full_only; | |
1066 | }; | |
1067 | ||
1068 | #define FEAT_OPA(n, w, p) \ | |
1069 | [n] = { .name = #n, .write = w, .print = p } | |
1070 | #define FEAT_OPF(n, w, p) \ | |
1071 | [n] = { .name = #n, .write = w, .print = p, .full_only = true } | |
1072 | ||
1073 | static const struct feature_ops feat_ops[HEADER_LAST_FEATURE] = { | |
1074 | FEAT_OPA(HEADER_TRACE_INFO, write_trace_info, NULL), | |
1075 | FEAT_OPA(HEADER_BUILD_ID, write_build_id, NULL), | |
1076 | FEAT_OPA(HEADER_HOSTNAME, write_hostname, print_hostname), | |
1077 | FEAT_OPA(HEADER_OSRELEASE, write_osrelease, print_osrelease), | |
1078 | FEAT_OPA(HEADER_VERSION, write_version, print_version), | |
1079 | FEAT_OPA(HEADER_ARCH, write_arch, print_arch), | |
1080 | FEAT_OPA(HEADER_NRCPUS, write_nrcpus, print_nrcpus), | |
1081 | FEAT_OPA(HEADER_CPUDESC, write_cpudesc, print_cpudesc), | |
1082 | FEAT_OPA(HEADER_CPUID, write_cpuid, print_cpuid), | |
1083 | FEAT_OPA(HEADER_TOTAL_MEM, write_total_mem, print_total_mem), | |
1084 | FEAT_OPA(HEADER_EVENT_DESC, write_event_desc, print_event_desc), | |
1085 | FEAT_OPA(HEADER_CMDLINE, write_cmdline, print_cmdline), | |
1086 | FEAT_OPF(HEADER_CPU_TOPOLOGY, write_cpu_topology, print_cpu_topology), | |
1087 | FEAT_OPF(HEADER_NUMA_TOPOLOGY, write_numa_topology, print_numa_topology), | |
1088 | }; | |
1089 | ||
1090 | struct header_print_data { | |
1091 | FILE *fp; | |
1092 | bool full; /* extended list of headers */ | |
1093 | }; | |
1094 | ||
1095 | static int perf_file_section__fprintf_info(struct perf_file_section *section, | |
1096 | struct perf_header *ph, | |
1097 | int feat, int fd, void *data) | |
1098 | { | |
1099 | struct header_print_data *hd = data; | |
1100 | ||
1101 | if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) { | |
1102 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " | |
1103 | "%d, continuing...\n", section->offset, feat); | |
1104 | return 0; | |
1105 | } | |
1106 | if (feat < HEADER_TRACE_INFO || feat >= HEADER_LAST_FEATURE) { | |
1107 | pr_warning("unknown feature %d\n", feat); | |
1108 | return -1; | |
1109 | } | |
1110 | if (!feat_ops[feat].print) | |
1111 | return 0; | |
1112 | ||
1113 | if (!feat_ops[feat].full_only || hd->full) | |
1114 | feat_ops[feat].print(ph, fd, hd->fp); | |
1115 | else | |
1116 | fprintf(hd->fp, "# %s info available, use -I to display\n", | |
1117 | feat_ops[feat].name); | |
1118 | ||
1119 | return 0; | |
1120 | } | |
1121 | ||
1122 | int perf_header__fprintf_info(struct perf_session *session, FILE *fp, bool full) | |
1123 | { | |
1124 | struct header_print_data hd; | |
1125 | struct perf_header *header = &session->header; | |
1126 | int fd = session->fd; | |
1127 | hd.fp = fp; | |
1128 | hd.full = full; | |
1129 | ||
1130 | perf_header__process_sections(header, fd, &hd, | |
1131 | perf_file_section__fprintf_info); | |
1132 | return 0; | |
1133 | } | |
1134 | ||
4cf40131 ACM |
1135 | #define dsos__for_each_with_build_id(pos, head) \ |
1136 | list_for_each_entry(pos, head, node) \ | |
1137 | if (!pos->has_build_id) \ | |
1138 | continue; \ | |
1139 | else | |
1140 | ||
a1645ce1 ZY |
1141 | static int __dsos__write_buildid_table(struct list_head *head, pid_t pid, |
1142 | u16 misc, int fd) | |
8671dab9 | 1143 | { |
e30a3d12 ACM |
1144 | struct dso *pos; |
1145 | ||
4cf40131 | 1146 | dsos__for_each_with_build_id(pos, head) { |
d5eed904 | 1147 | int err; |
e30a3d12 | 1148 | struct build_id_event b; |
6122e4e4 | 1149 | size_t len; |
e30a3d12 | 1150 | |
6122e4e4 ACM |
1151 | if (!pos->hit) |
1152 | continue; | |
1153 | len = pos->long_name_len + 1; | |
7691b1ec | 1154 | len = ALIGN(len, NAME_ALIGN); |
e30a3d12 ACM |
1155 | memset(&b, 0, sizeof(b)); |
1156 | memcpy(&b.build_id, pos->build_id, sizeof(pos->build_id)); | |
a1645ce1 | 1157 | b.pid = pid; |
a89e5abe | 1158 | b.header.misc = misc; |
e30a3d12 | 1159 | b.header.size = sizeof(b) + len; |
d5eed904 ACM |
1160 | err = do_write(fd, &b, sizeof(b)); |
1161 | if (err < 0) | |
1162 | return err; | |
f92cb24c ACM |
1163 | err = write_padded(fd, pos->long_name, |
1164 | pos->long_name_len + 1, len); | |
d5eed904 ACM |
1165 | if (err < 0) |
1166 | return err; | |
57f395a7 | 1167 | } |
3726cc75 ACM |
1168 | |
1169 | return 0; | |
8671dab9 FW |
1170 | } |
1171 | ||
1c0b04d1 | 1172 | static int machine__write_buildid_table(struct machine *machine, int fd) |
f869097e ACM |
1173 | { |
1174 | int err; | |
1175 | u16 kmisc = PERF_RECORD_MISC_KERNEL, | |
1176 | umisc = PERF_RECORD_MISC_USER; | |
1177 | ||
1c0b04d1 | 1178 | if (!machine__is_host(machine)) { |
f869097e ACM |
1179 | kmisc = PERF_RECORD_MISC_GUEST_KERNEL; |
1180 | umisc = PERF_RECORD_MISC_GUEST_USER; | |
1181 | } | |
1182 | ||
1c0b04d1 | 1183 | err = __dsos__write_buildid_table(&machine->kernel_dsos, machine->pid, |
f869097e ACM |
1184 | kmisc, fd); |
1185 | if (err == 0) | |
1c0b04d1 ACM |
1186 | err = __dsos__write_buildid_table(&machine->user_dsos, |
1187 | machine->pid, umisc, fd); | |
f869097e ACM |
1188 | return err; |
1189 | } | |
1190 | ||
a1645ce1 | 1191 | static int dsos__write_buildid_table(struct perf_header *header, int fd) |
b0da954a | 1192 | { |
a1645ce1 ZY |
1193 | struct perf_session *session = container_of(header, |
1194 | struct perf_session, header); | |
1195 | struct rb_node *nd; | |
f869097e ACM |
1196 | int err = machine__write_buildid_table(&session->host_machine, fd); |
1197 | ||
1198 | if (err) | |
1199 | return err; | |
a1645ce1 | 1200 | |
23346f21 ACM |
1201 | for (nd = rb_first(&session->machines); nd; nd = rb_next(nd)) { |
1202 | struct machine *pos = rb_entry(nd, struct machine, rb_node); | |
f869097e | 1203 | err = machine__write_buildid_table(pos, fd); |
a1645ce1 ZY |
1204 | if (err) |
1205 | break; | |
1206 | } | |
b0da954a ACM |
1207 | return err; |
1208 | } | |
1209 | ||
ef12a141 ACM |
1210 | int build_id_cache__add_s(const char *sbuild_id, const char *debugdir, |
1211 | const char *name, bool is_kallsyms) | |
4cf40131 ACM |
1212 | { |
1213 | const size_t size = PATH_MAX; | |
4f9bae35 HP |
1214 | char *realname, *filename = zalloc(size), |
1215 | *linkname = zalloc(size), *targetname; | |
4cf40131 ACM |
1216 | int len, err = -1; |
1217 | ||
ec80fde7 ACM |
1218 | if (is_kallsyms) { |
1219 | if (symbol_conf.kptr_restrict) { | |
1220 | pr_debug("Not caching a kptr_restrict'ed /proc/kallsyms\n"); | |
1221 | return 0; | |
1222 | } | |
7ee235ef | 1223 | realname = (char *)name; |
ec80fde7 | 1224 | } else |
7ee235ef LM |
1225 | realname = realpath(name, NULL); |
1226 | ||
68a7a771 | 1227 | if (realname == NULL || filename == NULL || linkname == NULL) |
4cf40131 ACM |
1228 | goto out_free; |
1229 | ||
9e201442 | 1230 | len = snprintf(filename, size, "%s%s%s", |
68a7a771 | 1231 | debugdir, is_kallsyms ? "/" : "", realname); |
4cf40131 ACM |
1232 | if (mkdir_p(filename, 0755)) |
1233 | goto out_free; | |
1234 | ||
ef12a141 | 1235 | snprintf(filename + len, sizeof(filename) - len, "/%s", sbuild_id); |
4cf40131 | 1236 | |
9e201442 ACM |
1237 | if (access(filename, F_OK)) { |
1238 | if (is_kallsyms) { | |
1239 | if (copyfile("/proc/kallsyms", filename)) | |
1240 | goto out_free; | |
68a7a771 | 1241 | } else if (link(realname, filename) && copyfile(name, filename)) |
9e201442 ACM |
1242 | goto out_free; |
1243 | } | |
4cf40131 ACM |
1244 | |
1245 | len = snprintf(linkname, size, "%s/.build-id/%.2s", | |
1246 | debugdir, sbuild_id); | |
1247 | ||
1248 | if (access(linkname, X_OK) && mkdir_p(linkname, 0755)) | |
1249 | goto out_free; | |
1250 | ||
1251 | snprintf(linkname + len, size - len, "/%s", sbuild_id + 2); | |
1252 | targetname = filename + strlen(debugdir) - 5; | |
1253 | memcpy(targetname, "../..", 5); | |
1254 | ||
1255 | if (symlink(targetname, linkname) == 0) | |
1256 | err = 0; | |
1257 | out_free: | |
7ee235ef LM |
1258 | if (!is_kallsyms) |
1259 | free(realname); | |
4cf40131 ACM |
1260 | free(filename); |
1261 | free(linkname); | |
1262 | return err; | |
1263 | } | |
1264 | ||
ef12a141 ACM |
1265 | static int build_id_cache__add_b(const u8 *build_id, size_t build_id_size, |
1266 | const char *name, const char *debugdir, | |
1267 | bool is_kallsyms) | |
1268 | { | |
1269 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; | |
1270 | ||
1271 | build_id__sprintf(build_id, build_id_size, sbuild_id); | |
1272 | ||
1273 | return build_id_cache__add_s(sbuild_id, debugdir, name, is_kallsyms); | |
1274 | } | |
1275 | ||
1276 | int build_id_cache__remove_s(const char *sbuild_id, const char *debugdir) | |
1277 | { | |
1278 | const size_t size = PATH_MAX; | |
4f9bae35 HP |
1279 | char *filename = zalloc(size), |
1280 | *linkname = zalloc(size); | |
ef12a141 ACM |
1281 | int err = -1; |
1282 | ||
1283 | if (filename == NULL || linkname == NULL) | |
1284 | goto out_free; | |
1285 | ||
1286 | snprintf(linkname, size, "%s/.build-id/%.2s/%s", | |
1287 | debugdir, sbuild_id, sbuild_id + 2); | |
1288 | ||
1289 | if (access(linkname, F_OK)) | |
1290 | goto out_free; | |
1291 | ||
6c3c5b26 | 1292 | if (readlink(linkname, filename, size - 1) < 0) |
ef12a141 ACM |
1293 | goto out_free; |
1294 | ||
1295 | if (unlink(linkname)) | |
1296 | goto out_free; | |
1297 | ||
1298 | /* | |
1299 | * Since the link is relative, we must make it absolute: | |
1300 | */ | |
1301 | snprintf(linkname, size, "%s/.build-id/%.2s/%s", | |
1302 | debugdir, sbuild_id, filename); | |
1303 | ||
1304 | if (unlink(linkname)) | |
1305 | goto out_free; | |
1306 | ||
1307 | err = 0; | |
1308 | out_free: | |
1309 | free(filename); | |
1310 | free(linkname); | |
1311 | return err; | |
1312 | } | |
1313 | ||
1c0b04d1 | 1314 | static int dso__cache_build_id(struct dso *dso, const char *debugdir) |
ef12a141 | 1315 | { |
1c0b04d1 | 1316 | bool is_kallsyms = dso->kernel && dso->long_name[0] != '/'; |
ef12a141 | 1317 | |
1c0b04d1 ACM |
1318 | return build_id_cache__add_b(dso->build_id, sizeof(dso->build_id), |
1319 | dso->long_name, debugdir, is_kallsyms); | |
ef12a141 ACM |
1320 | } |
1321 | ||
4cf40131 ACM |
1322 | static int __dsos__cache_build_ids(struct list_head *head, const char *debugdir) |
1323 | { | |
1324 | struct dso *pos; | |
1325 | int err = 0; | |
1326 | ||
1327 | dsos__for_each_with_build_id(pos, head) | |
1328 | if (dso__cache_build_id(pos, debugdir)) | |
1329 | err = -1; | |
1330 | ||
1331 | return err; | |
1332 | } | |
1333 | ||
1c0b04d1 | 1334 | static int machine__cache_build_ids(struct machine *machine, const char *debugdir) |
f869097e | 1335 | { |
1c0b04d1 ACM |
1336 | int ret = __dsos__cache_build_ids(&machine->kernel_dsos, debugdir); |
1337 | ret |= __dsos__cache_build_ids(&machine->user_dsos, debugdir); | |
f869097e ACM |
1338 | return ret; |
1339 | } | |
1340 | ||
1c0b04d1 | 1341 | static int perf_session__cache_build_ids(struct perf_session *session) |
4cf40131 | 1342 | { |
a1645ce1 | 1343 | struct rb_node *nd; |
f869097e | 1344 | int ret; |
4cf40131 ACM |
1345 | char debugdir[PATH_MAX]; |
1346 | ||
45de34bb | 1347 | snprintf(debugdir, sizeof(debugdir), "%s", buildid_dir); |
4cf40131 ACM |
1348 | |
1349 | if (mkdir(debugdir, 0755) != 0 && errno != EEXIST) | |
1350 | return -1; | |
1351 | ||
1c0b04d1 | 1352 | ret = machine__cache_build_ids(&session->host_machine, debugdir); |
f869097e | 1353 | |
1c0b04d1 | 1354 | for (nd = rb_first(&session->machines); nd; nd = rb_next(nd)) { |
23346f21 | 1355 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
f869097e | 1356 | ret |= machine__cache_build_ids(pos, debugdir); |
a1645ce1 ZY |
1357 | } |
1358 | return ret ? -1 : 0; | |
1359 | } | |
1360 | ||
1c0b04d1 | 1361 | static bool machine__read_build_ids(struct machine *machine, bool with_hits) |
f869097e | 1362 | { |
1c0b04d1 ACM |
1363 | bool ret = __dsos__read_build_ids(&machine->kernel_dsos, with_hits); |
1364 | ret |= __dsos__read_build_ids(&machine->user_dsos, with_hits); | |
f869097e ACM |
1365 | return ret; |
1366 | } | |
1367 | ||
1c0b04d1 | 1368 | static bool perf_session__read_build_ids(struct perf_session *session, bool with_hits) |
a1645ce1 | 1369 | { |
a1645ce1 | 1370 | struct rb_node *nd; |
1c0b04d1 | 1371 | bool ret = machine__read_build_ids(&session->host_machine, with_hits); |
a1645ce1 | 1372 | |
1c0b04d1 | 1373 | for (nd = rb_first(&session->machines); nd; nd = rb_next(nd)) { |
23346f21 | 1374 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
f869097e | 1375 | ret |= machine__read_build_ids(pos, with_hits); |
a1645ce1 ZY |
1376 | } |
1377 | ||
1378 | return ret; | |
4cf40131 ACM |
1379 | } |
1380 | ||
fbe96f29 SE |
1381 | static int do_write_feat(int fd, struct perf_header *h, int type, |
1382 | struct perf_file_section **p, | |
1383 | struct perf_evlist *evlist) | |
1384 | { | |
1385 | int err; | |
1386 | int ret = 0; | |
1387 | ||
1388 | if (perf_header__has_feat(h, type)) { | |
1389 | ||
1390 | (*p)->offset = lseek(fd, 0, SEEK_CUR); | |
1391 | ||
1392 | err = feat_ops[type].write(fd, h, evlist); | |
1393 | if (err < 0) { | |
1394 | pr_debug("failed to write feature %d\n", type); | |
1395 | ||
1396 | /* undo anything written */ | |
1397 | lseek(fd, (*p)->offset, SEEK_SET); | |
1398 | ||
1399 | return -1; | |
1400 | } | |
1401 | (*p)->size = lseek(fd, 0, SEEK_CUR) - (*p)->offset; | |
1402 | (*p)++; | |
1403 | } | |
1404 | return ret; | |
1405 | } | |
1406 | ||
1c0b04d1 | 1407 | static int perf_header__adds_write(struct perf_header *header, |
361c99a6 | 1408 | struct perf_evlist *evlist, int fd) |
2ba08250 | 1409 | { |
9e827dd0 | 1410 | int nr_sections; |
f869097e | 1411 | struct perf_session *session; |
fbe96f29 | 1412 | struct perf_file_section *feat_sec, *p; |
9e827dd0 FW |
1413 | int sec_size; |
1414 | u64 sec_start; | |
fbe96f29 | 1415 | int err; |
9e827dd0 | 1416 | |
1c0b04d1 | 1417 | session = container_of(header, struct perf_session, header); |
baa2f6ce | 1418 | |
1c0b04d1 | 1419 | if (perf_header__has_feat(header, HEADER_BUILD_ID && |
baa2f6ce | 1420 | !perf_session__read_build_ids(session, true))) |
1c0b04d1 | 1421 | perf_header__clear_feat(header, HEADER_BUILD_ID); |
9e827dd0 | 1422 | |
1c0b04d1 | 1423 | nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS); |
9e827dd0 | 1424 | if (!nr_sections) |
d5eed904 | 1425 | return 0; |
9e827dd0 | 1426 | |
fbe96f29 | 1427 | feat_sec = p = calloc(sizeof(*feat_sec), nr_sections); |
d5eed904 ACM |
1428 | if (feat_sec == NULL) |
1429 | return -ENOMEM; | |
9e827dd0 FW |
1430 | |
1431 | sec_size = sizeof(*feat_sec) * nr_sections; | |
1432 | ||
1c0b04d1 | 1433 | sec_start = header->data_offset + header->data_size; |
f887f301 | 1434 | lseek(fd, sec_start + sec_size, SEEK_SET); |
2ba08250 | 1435 | |
fbe96f29 SE |
1436 | err = do_write_feat(fd, header, HEADER_TRACE_INFO, &p, evlist); |
1437 | if (err) | |
1438 | goto out_free; | |
9e827dd0 | 1439 | |
fbe96f29 SE |
1440 | err = do_write_feat(fd, header, HEADER_BUILD_ID, &p, evlist); |
1441 | if (err) { | |
1442 | perf_header__clear_feat(header, HEADER_BUILD_ID); | |
1443 | goto out_free; | |
2ba08250 | 1444 | } |
8671dab9 | 1445 | |
fbe96f29 SE |
1446 | err = do_write_feat(fd, header, HEADER_HOSTNAME, &p, evlist); |
1447 | if (err) | |
1448 | perf_header__clear_feat(header, HEADER_HOSTNAME); | |
9e827dd0 | 1449 | |
fbe96f29 SE |
1450 | err = do_write_feat(fd, header, HEADER_OSRELEASE, &p, evlist); |
1451 | if (err) | |
1452 | perf_header__clear_feat(header, HEADER_OSRELEASE); | |
9e827dd0 | 1453 | |
fbe96f29 SE |
1454 | err = do_write_feat(fd, header, HEADER_VERSION, &p, evlist); |
1455 | if (err) | |
1456 | perf_header__clear_feat(header, HEADER_VERSION); | |
1457 | ||
1458 | err = do_write_feat(fd, header, HEADER_ARCH, &p, evlist); | |
1459 | if (err) | |
1460 | perf_header__clear_feat(header, HEADER_ARCH); | |
1461 | ||
1462 | err = do_write_feat(fd, header, HEADER_NRCPUS, &p, evlist); | |
1463 | if (err) | |
1464 | perf_header__clear_feat(header, HEADER_NRCPUS); | |
1465 | ||
1466 | err = do_write_feat(fd, header, HEADER_CPUDESC, &p, evlist); | |
1467 | if (err) | |
1468 | perf_header__clear_feat(header, HEADER_CPUDESC); | |
1469 | ||
1470 | err = do_write_feat(fd, header, HEADER_CPUID, &p, evlist); | |
1471 | if (err) | |
1472 | perf_header__clear_feat(header, HEADER_CPUID); | |
1473 | ||
1474 | err = do_write_feat(fd, header, HEADER_TOTAL_MEM, &p, evlist); | |
1475 | if (err) | |
1476 | perf_header__clear_feat(header, HEADER_TOTAL_MEM); | |
1477 | ||
1478 | err = do_write_feat(fd, header, HEADER_CMDLINE, &p, evlist); | |
1479 | if (err) | |
1480 | perf_header__clear_feat(header, HEADER_CMDLINE); | |
1481 | ||
1482 | err = do_write_feat(fd, header, HEADER_EVENT_DESC, &p, evlist); | |
1483 | if (err) | |
1484 | perf_header__clear_feat(header, HEADER_EVENT_DESC); | |
1485 | ||
1486 | err = do_write_feat(fd, header, HEADER_CPU_TOPOLOGY, &p, evlist); | |
1487 | if (err) | |
1488 | perf_header__clear_feat(header, HEADER_CPU_TOPOLOGY); | |
1489 | ||
1490 | err = do_write_feat(fd, header, HEADER_NUMA_TOPOLOGY, &p, evlist); | |
1491 | if (err) | |
1492 | perf_header__clear_feat(header, HEADER_NUMA_TOPOLOGY); | |
9e827dd0 | 1493 | |
f887f301 | 1494 | lseek(fd, sec_start, SEEK_SET); |
fbe96f29 SE |
1495 | /* |
1496 | * may write more than needed due to dropped feature, but | |
1497 | * this is okay, reader will skip the mising entries | |
1498 | */ | |
d5eed904 ACM |
1499 | err = do_write(fd, feat_sec, sec_size); |
1500 | if (err < 0) | |
1501 | pr_debug("failed to write feature section\n"); | |
1502 | out_free: | |
9e827dd0 | 1503 | free(feat_sec); |
d5eed904 | 1504 | return err; |
9e827dd0 | 1505 | } |
2ba08250 | 1506 | |
8dc58101 TZ |
1507 | int perf_header__write_pipe(int fd) |
1508 | { | |
1509 | struct perf_pipe_file_header f_header; | |
1510 | int err; | |
1511 | ||
1512 | f_header = (struct perf_pipe_file_header){ | |
1513 | .magic = PERF_MAGIC, | |
1514 | .size = sizeof(f_header), | |
1515 | }; | |
1516 | ||
1517 | err = do_write(fd, &f_header, sizeof(f_header)); | |
1518 | if (err < 0) { | |
1519 | pr_debug("failed to write perf pipe header\n"); | |
1520 | return err; | |
1521 | } | |
1522 | ||
1523 | return 0; | |
1524 | } | |
1525 | ||
a91e5431 ACM |
1526 | int perf_session__write_header(struct perf_session *session, |
1527 | struct perf_evlist *evlist, | |
1528 | int fd, bool at_exit) | |
7c6a1c65 PZ |
1529 | { |
1530 | struct perf_file_header f_header; | |
1531 | struct perf_file_attr f_attr; | |
1c0b04d1 | 1532 | struct perf_header *header = &session->header; |
a91e5431 ACM |
1533 | struct perf_evsel *attr, *pair = NULL; |
1534 | int err; | |
7c6a1c65 PZ |
1535 | |
1536 | lseek(fd, sizeof(f_header), SEEK_SET); | |
1537 | ||
a91e5431 ACM |
1538 | if (session->evlist != evlist) |
1539 | pair = list_entry(session->evlist->entries.next, struct perf_evsel, node); | |
7c6a1c65 | 1540 | |
a91e5431 | 1541 | list_for_each_entry(attr, &evlist->entries, node) { |
7c6a1c65 | 1542 | attr->id_offset = lseek(fd, 0, SEEK_CUR); |
d5eed904 ACM |
1543 | err = do_write(fd, attr->id, attr->ids * sizeof(u64)); |
1544 | if (err < 0) { | |
a91e5431 | 1545 | out_err_write: |
d5eed904 ACM |
1546 | pr_debug("failed to write perf header\n"); |
1547 | return err; | |
1548 | } | |
a91e5431 ACM |
1549 | if (session->evlist != evlist) { |
1550 | err = do_write(fd, pair->id, pair->ids * sizeof(u64)); | |
1551 | if (err < 0) | |
1552 | goto out_err_write; | |
1553 | attr->ids += pair->ids; | |
1554 | pair = list_entry(pair->node.next, struct perf_evsel, node); | |
1555 | } | |
7c6a1c65 PZ |
1556 | } |
1557 | ||
1c0b04d1 | 1558 | header->attr_offset = lseek(fd, 0, SEEK_CUR); |
7c6a1c65 | 1559 | |
a91e5431 | 1560 | list_for_each_entry(attr, &evlist->entries, node) { |
7c6a1c65 PZ |
1561 | f_attr = (struct perf_file_attr){ |
1562 | .attr = attr->attr, | |
1563 | .ids = { | |
1564 | .offset = attr->id_offset, | |
1565 | .size = attr->ids * sizeof(u64), | |
1566 | } | |
1567 | }; | |
d5eed904 ACM |
1568 | err = do_write(fd, &f_attr, sizeof(f_attr)); |
1569 | if (err < 0) { | |
1570 | pr_debug("failed to write perf header attribute\n"); | |
1571 | return err; | |
1572 | } | |
7c6a1c65 PZ |
1573 | } |
1574 | ||
1c0b04d1 ACM |
1575 | header->event_offset = lseek(fd, 0, SEEK_CUR); |
1576 | header->event_size = event_count * sizeof(struct perf_trace_event_type); | |
d5eed904 | 1577 | if (events) { |
1c0b04d1 | 1578 | err = do_write(fd, events, header->event_size); |
d5eed904 ACM |
1579 | if (err < 0) { |
1580 | pr_debug("failed to write perf header events\n"); | |
1581 | return err; | |
1582 | } | |
1583 | } | |
8755a8f2 | 1584 | |
1c0b04d1 | 1585 | header->data_offset = lseek(fd, 0, SEEK_CUR); |
7c6a1c65 | 1586 | |
d5eed904 | 1587 | if (at_exit) { |
1c0b04d1 | 1588 | err = perf_header__adds_write(header, evlist, fd); |
d5eed904 ACM |
1589 | if (err < 0) |
1590 | return err; | |
1591 | } | |
9e827dd0 | 1592 | |
7c6a1c65 PZ |
1593 | f_header = (struct perf_file_header){ |
1594 | .magic = PERF_MAGIC, | |
1595 | .size = sizeof(f_header), | |
1596 | .attr_size = sizeof(f_attr), | |
1597 | .attrs = { | |
1c0b04d1 | 1598 | .offset = header->attr_offset, |
a91e5431 | 1599 | .size = evlist->nr_entries * sizeof(f_attr), |
7c6a1c65 PZ |
1600 | }, |
1601 | .data = { | |
1c0b04d1 ACM |
1602 | .offset = header->data_offset, |
1603 | .size = header->data_size, | |
7c6a1c65 | 1604 | }, |
8755a8f2 | 1605 | .event_types = { |
1c0b04d1 ACM |
1606 | .offset = header->event_offset, |
1607 | .size = header->event_size, | |
8755a8f2 | 1608 | }, |
7c6a1c65 PZ |
1609 | }; |
1610 | ||
1c0b04d1 | 1611 | memcpy(&f_header.adds_features, &header->adds_features, sizeof(header->adds_features)); |
2ba08250 | 1612 | |
7c6a1c65 | 1613 | lseek(fd, 0, SEEK_SET); |
d5eed904 ACM |
1614 | err = do_write(fd, &f_header, sizeof(f_header)); |
1615 | if (err < 0) { | |
1616 | pr_debug("failed to write perf header\n"); | |
1617 | return err; | |
1618 | } | |
1c0b04d1 | 1619 | lseek(fd, header->data_offset + header->data_size, SEEK_SET); |
7c6a1c65 | 1620 | |
1c0b04d1 | 1621 | header->frozen = 1; |
d5eed904 | 1622 | return 0; |
7c6a1c65 PZ |
1623 | } |
1624 | ||
1c0b04d1 | 1625 | static int perf_header__getbuffer64(struct perf_header *header, |
ba21594c ACM |
1626 | int fd, void *buf, size_t size) |
1627 | { | |
1e7972cc | 1628 | if (readn(fd, buf, size) <= 0) |
ba21594c ACM |
1629 | return -1; |
1630 | ||
1c0b04d1 | 1631 | if (header->needs_swap) |
ba21594c ACM |
1632 | mem_bswap_64(buf, size); |
1633 | ||
1634 | return 0; | |
1635 | } | |
1636 | ||
1c0b04d1 | 1637 | int perf_header__process_sections(struct perf_header *header, int fd, |
fbe96f29 | 1638 | void *data, |
1c0b04d1 | 1639 | int (*process)(struct perf_file_section *section, |
fbe96f29 SE |
1640 | struct perf_header *ph, |
1641 | int feat, int fd, void *data)) | |
2ba08250 | 1642 | { |
9e827dd0 FW |
1643 | struct perf_file_section *feat_sec; |
1644 | int nr_sections; | |
1645 | int sec_size; | |
1646 | int idx = 0; | |
769885f3 | 1647 | int err = -1, feat = 1; |
9e827dd0 | 1648 | |
1c0b04d1 | 1649 | nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS); |
9e827dd0 | 1650 | if (!nr_sections) |
37562eac | 1651 | return 0; |
9e827dd0 FW |
1652 | |
1653 | feat_sec = calloc(sizeof(*feat_sec), nr_sections); | |
1654 | if (!feat_sec) | |
37562eac | 1655 | return -1; |
9e827dd0 FW |
1656 | |
1657 | sec_size = sizeof(*feat_sec) * nr_sections; | |
1658 | ||
1c0b04d1 | 1659 | lseek(fd, header->data_offset + header->data_size, SEEK_SET); |
9e827dd0 | 1660 | |
1c0b04d1 | 1661 | if (perf_header__getbuffer64(header, fd, feat_sec, sec_size)) |
769885f3 | 1662 | goto out_free; |
9e827dd0 | 1663 | |
769885f3 | 1664 | err = 0; |
37562eac | 1665 | while (idx < nr_sections && feat < HEADER_LAST_FEATURE) { |
1c0b04d1 | 1666 | if (perf_header__has_feat(header, feat)) { |
37562eac | 1667 | struct perf_file_section *sec = &feat_sec[idx++]; |
2ba08250 | 1668 | |
fbe96f29 | 1669 | err = process(sec, header, feat, fd, data); |
37562eac ACM |
1670 | if (err < 0) |
1671 | break; | |
1672 | } | |
1673 | ++feat; | |
2ba08250 | 1674 | } |
769885f3 | 1675 | out_free: |
37562eac ACM |
1676 | free(feat_sec); |
1677 | return err; | |
769885f3 | 1678 | } |
4778d2e4 | 1679 | |
1c0b04d1 | 1680 | int perf_file_header__read(struct perf_file_header *header, |
37562eac ACM |
1681 | struct perf_header *ph, int fd) |
1682 | { | |
1683 | lseek(fd, 0, SEEK_SET); | |
37562eac | 1684 | |
1c0b04d1 ACM |
1685 | if (readn(fd, header, sizeof(*header)) <= 0 || |
1686 | memcmp(&header->magic, __perf_magic, sizeof(header->magic))) | |
37562eac ACM |
1687 | return -1; |
1688 | ||
1c0b04d1 ACM |
1689 | if (header->attr_size != sizeof(struct perf_file_attr)) { |
1690 | u64 attr_size = bswap_64(header->attr_size); | |
ba21594c ACM |
1691 | |
1692 | if (attr_size != sizeof(struct perf_file_attr)) | |
1693 | return -1; | |
1694 | ||
1c0b04d1 | 1695 | mem_bswap_64(header, offsetof(struct perf_file_header, |
ba21594c ACM |
1696 | adds_features)); |
1697 | ph->needs_swap = true; | |
1698 | } | |
1699 | ||
1c0b04d1 | 1700 | if (header->size != sizeof(*header)) { |
37562eac | 1701 | /* Support the previous format */ |
1c0b04d1 ACM |
1702 | if (header->size == offsetof(typeof(*header), adds_features)) |
1703 | bitmap_zero(header->adds_features, HEADER_FEAT_BITS); | |
37562eac ACM |
1704 | else |
1705 | return -1; | |
d327fa43 DA |
1706 | } else if (ph->needs_swap) { |
1707 | unsigned int i; | |
1708 | /* | |
1709 | * feature bitmap is declared as an array of unsigned longs -- | |
1710 | * not good since its size can differ between the host that | |
1711 | * generated the data file and the host analyzing the file. | |
1712 | * | |
1713 | * We need to handle endianness, but we don't know the size of | |
1714 | * the unsigned long where the file was generated. Take a best | |
1715 | * guess at determining it: try 64-bit swap first (ie., file | |
1716 | * created on a 64-bit host), and check if the hostname feature | |
1717 | * bit is set (this feature bit is forced on as of fbe96f2). | |
1718 | * If the bit is not, undo the 64-bit swap and try a 32-bit | |
1719 | * swap. If the hostname bit is still not set (e.g., older data | |
1720 | * file), punt and fallback to the original behavior -- | |
1721 | * clearing all feature bits and setting buildid. | |
1722 | */ | |
1723 | for (i = 0; i < BITS_TO_LONGS(HEADER_FEAT_BITS); ++i) | |
1724 | header->adds_features[i] = bswap_64(header->adds_features[i]); | |
1725 | ||
1726 | if (!test_bit(HEADER_HOSTNAME, header->adds_features)) { | |
1727 | for (i = 0; i < BITS_TO_LONGS(HEADER_FEAT_BITS); ++i) { | |
1728 | header->adds_features[i] = bswap_64(header->adds_features[i]); | |
1729 | header->adds_features[i] = bswap_32(header->adds_features[i]); | |
1730 | } | |
1731 | } | |
1732 | ||
1733 | if (!test_bit(HEADER_HOSTNAME, header->adds_features)) { | |
1734 | bitmap_zero(header->adds_features, HEADER_FEAT_BITS); | |
1735 | set_bit(HEADER_BUILD_ID, header->adds_features); | |
1736 | } | |
4778d2e4 | 1737 | } |
9e827dd0 | 1738 | |
1c0b04d1 | 1739 | memcpy(&ph->adds_features, &header->adds_features, |
ba21594c | 1740 | sizeof(ph->adds_features)); |
37562eac | 1741 | |
1c0b04d1 ACM |
1742 | ph->event_offset = header->event_types.offset; |
1743 | ph->event_size = header->event_types.size; | |
1744 | ph->data_offset = header->data.offset; | |
1745 | ph->data_size = header->data.size; | |
37562eac ACM |
1746 | return 0; |
1747 | } | |
1748 | ||
a1645ce1 ZY |
1749 | static int __event_process_build_id(struct build_id_event *bev, |
1750 | char *filename, | |
1751 | struct perf_session *session) | |
1752 | { | |
1753 | int err = -1; | |
1754 | struct list_head *head; | |
23346f21 | 1755 | struct machine *machine; |
a1645ce1 ZY |
1756 | u16 misc; |
1757 | struct dso *dso; | |
1758 | enum dso_kernel_type dso_type; | |
1759 | ||
23346f21 ACM |
1760 | machine = perf_session__findnew_machine(session, bev->pid); |
1761 | if (!machine) | |
a1645ce1 ZY |
1762 | goto out; |
1763 | ||
1764 | misc = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
1765 | ||
1766 | switch (misc) { | |
1767 | case PERF_RECORD_MISC_KERNEL: | |
1768 | dso_type = DSO_TYPE_KERNEL; | |
23346f21 | 1769 | head = &machine->kernel_dsos; |
a1645ce1 ZY |
1770 | break; |
1771 | case PERF_RECORD_MISC_GUEST_KERNEL: | |
1772 | dso_type = DSO_TYPE_GUEST_KERNEL; | |
23346f21 | 1773 | head = &machine->kernel_dsos; |
a1645ce1 ZY |
1774 | break; |
1775 | case PERF_RECORD_MISC_USER: | |
1776 | case PERF_RECORD_MISC_GUEST_USER: | |
1777 | dso_type = DSO_TYPE_USER; | |
23346f21 | 1778 | head = &machine->user_dsos; |
a1645ce1 ZY |
1779 | break; |
1780 | default: | |
1781 | goto out; | |
1782 | } | |
1783 | ||
1784 | dso = __dsos__findnew(head, filename); | |
1785 | if (dso != NULL) { | |
454c407e TZ |
1786 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; |
1787 | ||
a1645ce1 | 1788 | dso__set_build_id(dso, &bev->build_id); |
454c407e TZ |
1789 | |
1790 | if (filename[0] == '[') | |
1791 | dso->kernel = dso_type; | |
1792 | ||
1793 | build_id__sprintf(dso->build_id, sizeof(dso->build_id), | |
1794 | sbuild_id); | |
1795 | pr_debug("build id event received for %s: %s\n", | |
1796 | dso->long_name, sbuild_id); | |
1797 | } | |
a1645ce1 ZY |
1798 | |
1799 | err = 0; | |
1800 | out: | |
1801 | return err; | |
1802 | } | |
1803 | ||
b2511481 ACM |
1804 | static int perf_header__read_build_ids_abi_quirk(struct perf_header *header, |
1805 | int input, u64 offset, u64 size) | |
1806 | { | |
1807 | struct perf_session *session = container_of(header, struct perf_session, header); | |
1808 | struct { | |
1809 | struct perf_event_header header; | |
1810 | u8 build_id[ALIGN(BUILD_ID_SIZE, sizeof(u64))]; | |
1811 | char filename[0]; | |
1812 | } old_bev; | |
1813 | struct build_id_event bev; | |
1814 | char filename[PATH_MAX]; | |
1815 | u64 limit = offset + size; | |
1816 | ||
1817 | while (offset < limit) { | |
1818 | ssize_t len; | |
1819 | ||
1820 | if (read(input, &old_bev, sizeof(old_bev)) != sizeof(old_bev)) | |
1821 | return -1; | |
1822 | ||
1823 | if (header->needs_swap) | |
1824 | perf_event_header__bswap(&old_bev.header); | |
1825 | ||
1826 | len = old_bev.header.size - sizeof(old_bev); | |
1827 | if (read(input, filename, len) != len) | |
1828 | return -1; | |
1829 | ||
1830 | bev.header = old_bev.header; | |
f57b05ed JO |
1831 | |
1832 | /* | |
1833 | * As the pid is the missing value, we need to fill | |
1834 | * it properly. The header.misc value give us nice hint. | |
1835 | */ | |
1836 | bev.pid = HOST_KERNEL_ID; | |
1837 | if (bev.header.misc == PERF_RECORD_MISC_GUEST_USER || | |
1838 | bev.header.misc == PERF_RECORD_MISC_GUEST_KERNEL) | |
1839 | bev.pid = DEFAULT_GUEST_KERNEL_ID; | |
1840 | ||
b2511481 ACM |
1841 | memcpy(bev.build_id, old_bev.build_id, sizeof(bev.build_id)); |
1842 | __event_process_build_id(&bev, filename, session); | |
1843 | ||
1844 | offset += bev.header.size; | |
1845 | } | |
1846 | ||
1847 | return 0; | |
1848 | } | |
1849 | ||
1c0b04d1 ACM |
1850 | static int perf_header__read_build_ids(struct perf_header *header, |
1851 | int input, u64 offset, u64 size) | |
a1645ce1 | 1852 | { |
1c0b04d1 | 1853 | struct perf_session *session = container_of(header, struct perf_session, header); |
a1645ce1 ZY |
1854 | struct build_id_event bev; |
1855 | char filename[PATH_MAX]; | |
b2511481 | 1856 | u64 limit = offset + size, orig_offset = offset; |
a1645ce1 ZY |
1857 | int err = -1; |
1858 | ||
1859 | while (offset < limit) { | |
1860 | ssize_t len; | |
1861 | ||
1862 | if (read(input, &bev, sizeof(bev)) != sizeof(bev)) | |
1863 | goto out; | |
1864 | ||
1c0b04d1 | 1865 | if (header->needs_swap) |
a1645ce1 ZY |
1866 | perf_event_header__bswap(&bev.header); |
1867 | ||
1868 | len = bev.header.size - sizeof(bev); | |
1869 | if (read(input, filename, len) != len) | |
1870 | goto out; | |
b2511481 ACM |
1871 | /* |
1872 | * The a1645ce1 changeset: | |
1873 | * | |
1874 | * "perf: 'perf kvm' tool for monitoring guest performance from host" | |
1875 | * | |
1876 | * Added a field to struct build_id_event that broke the file | |
1877 | * format. | |
1878 | * | |
1879 | * Since the kernel build-id is the first entry, process the | |
1880 | * table using the old format if the well known | |
1881 | * '[kernel.kallsyms]' string for the kernel build-id has the | |
1882 | * first 4 characters chopped off (where the pid_t sits). | |
1883 | */ | |
1884 | if (memcmp(filename, "nel.kallsyms]", 13) == 0) { | |
1885 | if (lseek(input, orig_offset, SEEK_SET) == (off_t)-1) | |
1886 | return -1; | |
1887 | return perf_header__read_build_ids_abi_quirk(header, input, offset, size); | |
1888 | } | |
a1645ce1 ZY |
1889 | |
1890 | __event_process_build_id(&bev, filename, session); | |
1891 | ||
1892 | offset += bev.header.size; | |
1893 | } | |
1894 | err = 0; | |
1895 | out: | |
1896 | return err; | |
1897 | } | |
1898 | ||
1c0b04d1 | 1899 | static int perf_file_section__process(struct perf_file_section *section, |
ba21594c | 1900 | struct perf_header *ph, |
fbe96f29 | 1901 | int feat, int fd, void *data __used) |
37562eac | 1902 | { |
1c0b04d1 | 1903 | if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) { |
9486aa38 | 1904 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " |
1c0b04d1 | 1905 | "%d, continuing...\n", section->offset, feat); |
37562eac ACM |
1906 | return 0; |
1907 | } | |
1908 | ||
1909 | switch (feat) { | |
1910 | case HEADER_TRACE_INFO: | |
454c407e | 1911 | trace_report(fd, false); |
37562eac ACM |
1912 | break; |
1913 | ||
1914 | case HEADER_BUILD_ID: | |
1c0b04d1 | 1915 | if (perf_header__read_build_ids(ph, fd, section->offset, section->size)) |
37562eac ACM |
1916 | pr_debug("Failed to read buildids, continuing...\n"); |
1917 | break; | |
51192de3 DA |
1918 | |
1919 | case HEADER_HOSTNAME: | |
1920 | case HEADER_OSRELEASE: | |
1921 | case HEADER_VERSION: | |
1922 | case HEADER_ARCH: | |
1923 | case HEADER_NRCPUS: | |
1924 | case HEADER_CPUDESC: | |
1925 | case HEADER_CPUID: | |
1926 | case HEADER_TOTAL_MEM: | |
1927 | case HEADER_CMDLINE: | |
1928 | case HEADER_EVENT_DESC: | |
1929 | case HEADER_CPU_TOPOLOGY: | |
1930 | case HEADER_NUMA_TOPOLOGY: | |
1931 | break; | |
1932 | ||
37562eac ACM |
1933 | default: |
1934 | pr_debug("unknown feature %d, continuing...\n", feat); | |
1935 | } | |
1936 | ||
1937 | return 0; | |
1938 | } | |
2ba08250 | 1939 | |
1c0b04d1 | 1940 | static int perf_file_header__read_pipe(struct perf_pipe_file_header *header, |
454c407e TZ |
1941 | struct perf_header *ph, int fd, |
1942 | bool repipe) | |
7c6a1c65 | 1943 | { |
1c0b04d1 ACM |
1944 | if (readn(fd, header, sizeof(*header)) <= 0 || |
1945 | memcmp(&header->magic, __perf_magic, sizeof(header->magic))) | |
8dc58101 TZ |
1946 | return -1; |
1947 | ||
1c0b04d1 | 1948 | if (repipe && do_write(STDOUT_FILENO, header, sizeof(*header)) < 0) |
454c407e TZ |
1949 | return -1; |
1950 | ||
1c0b04d1 ACM |
1951 | if (header->size != sizeof(*header)) { |
1952 | u64 size = bswap_64(header->size); | |
8dc58101 | 1953 | |
1c0b04d1 | 1954 | if (size != sizeof(*header)) |
8dc58101 TZ |
1955 | return -1; |
1956 | ||
1957 | ph->needs_swap = true; | |
1958 | } | |
1959 | ||
1960 | return 0; | |
1961 | } | |
1962 | ||
1963 | static int perf_header__read_pipe(struct perf_session *session, int fd) | |
1964 | { | |
1c0b04d1 | 1965 | struct perf_header *header = &session->header; |
8dc58101 TZ |
1966 | struct perf_pipe_file_header f_header; |
1967 | ||
1c0b04d1 | 1968 | if (perf_file_header__read_pipe(&f_header, header, fd, |
454c407e | 1969 | session->repipe) < 0) { |
8dc58101 TZ |
1970 | pr_debug("incompatible file format\n"); |
1971 | return -EINVAL; | |
1972 | } | |
1973 | ||
1974 | session->fd = fd; | |
1975 | ||
1976 | return 0; | |
1977 | } | |
1978 | ||
a91e5431 | 1979 | int perf_session__read_header(struct perf_session *session, int fd) |
8dc58101 | 1980 | { |
1c0b04d1 | 1981 | struct perf_header *header = &session->header; |
ba21594c | 1982 | struct perf_file_header f_header; |
7c6a1c65 PZ |
1983 | struct perf_file_attr f_attr; |
1984 | u64 f_id; | |
7c6a1c65 PZ |
1985 | int nr_attrs, nr_ids, i, j; |
1986 | ||
a91e5431 ACM |
1987 | session->evlist = perf_evlist__new(NULL, NULL); |
1988 | if (session->evlist == NULL) | |
1989 | return -ENOMEM; | |
1990 | ||
8dc58101 TZ |
1991 | if (session->fd_pipe) |
1992 | return perf_header__read_pipe(session, fd); | |
1993 | ||
1c0b04d1 | 1994 | if (perf_file_header__read(&f_header, header, fd) < 0) { |
4dc0a04b ACM |
1995 | pr_debug("incompatible file format\n"); |
1996 | return -EINVAL; | |
1997 | } | |
7c6a1c65 PZ |
1998 | |
1999 | nr_attrs = f_header.attrs.size / sizeof(f_attr); | |
2000 | lseek(fd, f_header.attrs.offset, SEEK_SET); | |
2001 | ||
2002 | for (i = 0; i < nr_attrs; i++) { | |
a91e5431 | 2003 | struct perf_evsel *evsel; |
1c222bce | 2004 | off_t tmp; |
7c6a1c65 | 2005 | |
eda3913b | 2006 | if (readn(fd, &f_attr, sizeof(f_attr)) <= 0) |
769885f3 | 2007 | goto out_errno; |
ba21594c | 2008 | |
eda3913b DA |
2009 | if (header->needs_swap) |
2010 | perf_event__attr_swap(&f_attr.attr); | |
2011 | ||
1c222bce | 2012 | tmp = lseek(fd, 0, SEEK_CUR); |
a91e5431 | 2013 | evsel = perf_evsel__new(&f_attr.attr, i); |
7c6a1c65 | 2014 | |
a91e5431 ACM |
2015 | if (evsel == NULL) |
2016 | goto out_delete_evlist; | |
2017 | /* | |
2018 | * Do it before so that if perf_evsel__alloc_id fails, this | |
2019 | * entry gets purged too at perf_evlist__delete(). | |
2020 | */ | |
2021 | perf_evlist__add(session->evlist, evsel); | |
7c6a1c65 PZ |
2022 | |
2023 | nr_ids = f_attr.ids.size / sizeof(u64); | |
a91e5431 ACM |
2024 | /* |
2025 | * We don't have the cpu and thread maps on the header, so | |
2026 | * for allocating the perf_sample_id table we fake 1 cpu and | |
2027 | * hattr->ids threads. | |
2028 | */ | |
2029 | if (perf_evsel__alloc_id(evsel, 1, nr_ids)) | |
2030 | goto out_delete_evlist; | |
2031 | ||
7c6a1c65 PZ |
2032 | lseek(fd, f_attr.ids.offset, SEEK_SET); |
2033 | ||
2034 | for (j = 0; j < nr_ids; j++) { | |
1c0b04d1 | 2035 | if (perf_header__getbuffer64(header, fd, &f_id, sizeof(f_id))) |
769885f3 | 2036 | goto out_errno; |
7c6a1c65 | 2037 | |
a91e5431 | 2038 | perf_evlist__id_add(session->evlist, evsel, 0, j, f_id); |
7c6a1c65 | 2039 | } |
11deb1f9 | 2040 | |
7c6a1c65 PZ |
2041 | lseek(fd, tmp, SEEK_SET); |
2042 | } | |
2043 | ||
d04b35f8 ACM |
2044 | symbol_conf.nr_events = nr_attrs; |
2045 | ||
8755a8f2 AV |
2046 | if (f_header.event_types.size) { |
2047 | lseek(fd, f_header.event_types.offset, SEEK_SET); | |
2048 | events = malloc(f_header.event_types.size); | |
4dc0a04b ACM |
2049 | if (events == NULL) |
2050 | return -ENOMEM; | |
1c0b04d1 | 2051 | if (perf_header__getbuffer64(header, fd, events, |
ba21594c | 2052 | f_header.event_types.size)) |
769885f3 | 2053 | goto out_errno; |
8755a8f2 AV |
2054 | event_count = f_header.event_types.size / sizeof(struct perf_trace_event_type); |
2055 | } | |
03456a15 | 2056 | |
fbe96f29 SE |
2057 | perf_header__process_sections(header, fd, NULL, |
2058 | perf_file_section__process); | |
4778d2e4 | 2059 | |
1c0b04d1 | 2060 | lseek(fd, header->data_offset, SEEK_SET); |
7c6a1c65 | 2061 | |
1c0b04d1 | 2062 | header->frozen = 1; |
4dc0a04b | 2063 | return 0; |
769885f3 ACM |
2064 | out_errno: |
2065 | return -errno; | |
a91e5431 ACM |
2066 | |
2067 | out_delete_evlist: | |
2068 | perf_evlist__delete(session->evlist); | |
2069 | session->evlist = NULL; | |
2070 | return -ENOMEM; | |
7c6a1c65 | 2071 | } |
0d3a5c88 | 2072 | |
45694aa7 | 2073 | int perf_event__synthesize_attr(struct perf_tool *tool, |
d20deb64 | 2074 | struct perf_event_attr *attr, u16 ids, u64 *id, |
743eb868 | 2075 | perf_event__handler_t process) |
2c46dbb5 | 2076 | { |
8115d60c | 2077 | union perf_event *ev; |
2c46dbb5 TZ |
2078 | size_t size; |
2079 | int err; | |
2080 | ||
2081 | size = sizeof(struct perf_event_attr); | |
2082 | size = ALIGN(size, sizeof(u64)); | |
2083 | size += sizeof(struct perf_event_header); | |
2084 | size += ids * sizeof(u64); | |
2085 | ||
2086 | ev = malloc(size); | |
2087 | ||
ce47dc56 CS |
2088 | if (ev == NULL) |
2089 | return -ENOMEM; | |
2090 | ||
2c46dbb5 TZ |
2091 | ev->attr.attr = *attr; |
2092 | memcpy(ev->attr.id, id, ids * sizeof(u64)); | |
2093 | ||
2094 | ev->attr.header.type = PERF_RECORD_HEADER_ATTR; | |
2095 | ev->attr.header.size = size; | |
2096 | ||
45694aa7 | 2097 | err = process(tool, ev, NULL, NULL); |
2c46dbb5 TZ |
2098 | |
2099 | free(ev); | |
2100 | ||
2101 | return err; | |
2102 | } | |
2103 | ||
45694aa7 | 2104 | int perf_event__synthesize_attrs(struct perf_tool *tool, |
d20deb64 | 2105 | struct perf_session *session, |
a91e5431 | 2106 | perf_event__handler_t process) |
2c46dbb5 | 2107 | { |
a91e5431 ACM |
2108 | struct perf_evsel *attr; |
2109 | int err = 0; | |
2c46dbb5 | 2110 | |
a91e5431 | 2111 | list_for_each_entry(attr, &session->evlist->entries, node) { |
45694aa7 | 2112 | err = perf_event__synthesize_attr(tool, &attr->attr, attr->ids, |
743eb868 | 2113 | attr->id, process); |
2c46dbb5 TZ |
2114 | if (err) { |
2115 | pr_debug("failed to create perf header attribute\n"); | |
2116 | return err; | |
2117 | } | |
2118 | } | |
2119 | ||
2120 | return err; | |
2121 | } | |
2122 | ||
8115d60c | 2123 | int perf_event__process_attr(union perf_event *event, |
10d0f086 | 2124 | struct perf_evlist **pevlist) |
2c46dbb5 | 2125 | { |
2c46dbb5 | 2126 | unsigned int i, ids, n_ids; |
a91e5431 | 2127 | struct perf_evsel *evsel; |
10d0f086 | 2128 | struct perf_evlist *evlist = *pevlist; |
2c46dbb5 | 2129 | |
10d0f086 ACM |
2130 | if (evlist == NULL) { |
2131 | *pevlist = evlist = perf_evlist__new(NULL, NULL); | |
2132 | if (evlist == NULL) | |
a91e5431 ACM |
2133 | return -ENOMEM; |
2134 | } | |
2135 | ||
10d0f086 | 2136 | evsel = perf_evsel__new(&event->attr.attr, evlist->nr_entries); |
a91e5431 | 2137 | if (evsel == NULL) |
2c46dbb5 TZ |
2138 | return -ENOMEM; |
2139 | ||
10d0f086 | 2140 | perf_evlist__add(evlist, evsel); |
a91e5431 | 2141 | |
8115d60c ACM |
2142 | ids = event->header.size; |
2143 | ids -= (void *)&event->attr.id - (void *)event; | |
2c46dbb5 | 2144 | n_ids = ids / sizeof(u64); |
a91e5431 ACM |
2145 | /* |
2146 | * We don't have the cpu and thread maps on the header, so | |
2147 | * for allocating the perf_sample_id table we fake 1 cpu and | |
2148 | * hattr->ids threads. | |
2149 | */ | |
2150 | if (perf_evsel__alloc_id(evsel, 1, n_ids)) | |
2151 | return -ENOMEM; | |
2c46dbb5 TZ |
2152 | |
2153 | for (i = 0; i < n_ids; i++) { | |
10d0f086 | 2154 | perf_evlist__id_add(evlist, evsel, 0, i, event->attr.id[i]); |
2c46dbb5 TZ |
2155 | } |
2156 | ||
2c46dbb5 TZ |
2157 | return 0; |
2158 | } | |
cd19a035 | 2159 | |
45694aa7 | 2160 | int perf_event__synthesize_event_type(struct perf_tool *tool, |
d20deb64 | 2161 | u64 event_id, char *name, |
8115d60c | 2162 | perf_event__handler_t process, |
743eb868 | 2163 | struct machine *machine) |
cd19a035 | 2164 | { |
8115d60c | 2165 | union perf_event ev; |
cd19a035 TZ |
2166 | size_t size = 0; |
2167 | int err = 0; | |
2168 | ||
2169 | memset(&ev, 0, sizeof(ev)); | |
2170 | ||
2171 | ev.event_type.event_type.event_id = event_id; | |
2172 | memset(ev.event_type.event_type.name, 0, MAX_EVENT_NAME); | |
2173 | strncpy(ev.event_type.event_type.name, name, MAX_EVENT_NAME - 1); | |
2174 | ||
2175 | ev.event_type.header.type = PERF_RECORD_HEADER_EVENT_TYPE; | |
2176 | size = strlen(name); | |
2177 | size = ALIGN(size, sizeof(u64)); | |
2178 | ev.event_type.header.size = sizeof(ev.event_type) - | |
2179 | (sizeof(ev.event_type.event_type.name) - size); | |
2180 | ||
45694aa7 | 2181 | err = process(tool, &ev, NULL, machine); |
cd19a035 TZ |
2182 | |
2183 | return err; | |
2184 | } | |
2185 | ||
45694aa7 | 2186 | int perf_event__synthesize_event_types(struct perf_tool *tool, |
d20deb64 | 2187 | perf_event__handler_t process, |
743eb868 | 2188 | struct machine *machine) |
cd19a035 TZ |
2189 | { |
2190 | struct perf_trace_event_type *type; | |
2191 | int i, err = 0; | |
2192 | ||
2193 | for (i = 0; i < event_count; i++) { | |
2194 | type = &events[i]; | |
2195 | ||
45694aa7 | 2196 | err = perf_event__synthesize_event_type(tool, type->event_id, |
8115d60c | 2197 | type->name, process, |
743eb868 | 2198 | machine); |
cd19a035 TZ |
2199 | if (err) { |
2200 | pr_debug("failed to create perf header event type\n"); | |
2201 | return err; | |
2202 | } | |
2203 | } | |
2204 | ||
2205 | return err; | |
2206 | } | |
2207 | ||
45694aa7 | 2208 | int perf_event__process_event_type(struct perf_tool *tool __unused, |
743eb868 | 2209 | union perf_event *event) |
cd19a035 | 2210 | { |
8115d60c ACM |
2211 | if (perf_header__push_event(event->event_type.event_type.event_id, |
2212 | event->event_type.event_type.name) < 0) | |
cd19a035 TZ |
2213 | return -ENOMEM; |
2214 | ||
2215 | return 0; | |
2216 | } | |
9215545e | 2217 | |
45694aa7 | 2218 | int perf_event__synthesize_tracing_data(struct perf_tool *tool, int fd, |
d20deb64 | 2219 | struct perf_evlist *evlist, |
743eb868 | 2220 | perf_event__handler_t process) |
9215545e | 2221 | { |
8115d60c | 2222 | union perf_event ev; |
29208e57 | 2223 | struct tracing_data *tdata; |
9215545e | 2224 | ssize_t size = 0, aligned_size = 0, padding; |
fb7d0b3c | 2225 | int err __used = 0; |
9215545e | 2226 | |
29208e57 JO |
2227 | /* |
2228 | * We are going to store the size of the data followed | |
2229 | * by the data contents. Since the fd descriptor is a pipe, | |
2230 | * we cannot seek back to store the size of the data once | |
2231 | * we know it. Instead we: | |
2232 | * | |
2233 | * - write the tracing data to the temp file | |
2234 | * - get/write the data size to pipe | |
2235 | * - write the tracing data from the temp file | |
2236 | * to the pipe | |
2237 | */ | |
2238 | tdata = tracing_data_get(&evlist->entries, fd, true); | |
2239 | if (!tdata) | |
2240 | return -1; | |
2241 | ||
9215545e TZ |
2242 | memset(&ev, 0, sizeof(ev)); |
2243 | ||
2244 | ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA; | |
29208e57 | 2245 | size = tdata->size; |
9215545e TZ |
2246 | aligned_size = ALIGN(size, sizeof(u64)); |
2247 | padding = aligned_size - size; | |
2248 | ev.tracing_data.header.size = sizeof(ev.tracing_data); | |
2249 | ev.tracing_data.size = aligned_size; | |
2250 | ||
45694aa7 | 2251 | process(tool, &ev, NULL, NULL); |
9215545e | 2252 | |
29208e57 JO |
2253 | /* |
2254 | * The put function will copy all the tracing data | |
2255 | * stored in temp file to the pipe. | |
2256 | */ | |
2257 | tracing_data_put(tdata); | |
2258 | ||
9215545e TZ |
2259 | write_padded(fd, NULL, 0, padding); |
2260 | ||
2261 | return aligned_size; | |
2262 | } | |
2263 | ||
8115d60c ACM |
2264 | int perf_event__process_tracing_data(union perf_event *event, |
2265 | struct perf_session *session) | |
9215545e | 2266 | { |
8115d60c | 2267 | ssize_t size_read, padding, size = event->tracing_data.size; |
9215545e TZ |
2268 | off_t offset = lseek(session->fd, 0, SEEK_CUR); |
2269 | char buf[BUFSIZ]; | |
2270 | ||
2271 | /* setup for reading amidst mmap */ | |
2272 | lseek(session->fd, offset + sizeof(struct tracing_data_event), | |
2273 | SEEK_SET); | |
2274 | ||
454c407e | 2275 | size_read = trace_report(session->fd, session->repipe); |
9215545e TZ |
2276 | |
2277 | padding = ALIGN(size_read, sizeof(u64)) - size_read; | |
2278 | ||
2279 | if (read(session->fd, buf, padding) < 0) | |
2280 | die("reading input file"); | |
454c407e TZ |
2281 | if (session->repipe) { |
2282 | int retw = write(STDOUT_FILENO, buf, padding); | |
2283 | if (retw <= 0 || retw != padding) | |
2284 | die("repiping tracing data padding"); | |
2285 | } | |
9215545e TZ |
2286 | |
2287 | if (size_read + padding != size) | |
2288 | die("tracing data size mismatch"); | |
2289 | ||
2290 | return size_read + padding; | |
2291 | } | |
c7929e47 | 2292 | |
45694aa7 | 2293 | int perf_event__synthesize_build_id(struct perf_tool *tool, |
d20deb64 | 2294 | struct dso *pos, u16 misc, |
8115d60c | 2295 | perf_event__handler_t process, |
743eb868 | 2296 | struct machine *machine) |
c7929e47 | 2297 | { |
8115d60c | 2298 | union perf_event ev; |
c7929e47 TZ |
2299 | size_t len; |
2300 | int err = 0; | |
2301 | ||
2302 | if (!pos->hit) | |
2303 | return err; | |
2304 | ||
2305 | memset(&ev, 0, sizeof(ev)); | |
2306 | ||
2307 | len = pos->long_name_len + 1; | |
2308 | len = ALIGN(len, NAME_ALIGN); | |
2309 | memcpy(&ev.build_id.build_id, pos->build_id, sizeof(pos->build_id)); | |
2310 | ev.build_id.header.type = PERF_RECORD_HEADER_BUILD_ID; | |
2311 | ev.build_id.header.misc = misc; | |
23346f21 | 2312 | ev.build_id.pid = machine->pid; |
c7929e47 TZ |
2313 | ev.build_id.header.size = sizeof(ev.build_id) + len; |
2314 | memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len); | |
2315 | ||
45694aa7 | 2316 | err = process(tool, &ev, NULL, machine); |
c7929e47 TZ |
2317 | |
2318 | return err; | |
2319 | } | |
2320 | ||
45694aa7 | 2321 | int perf_event__process_build_id(struct perf_tool *tool __used, |
d20deb64 | 2322 | union perf_event *event, |
8115d60c | 2323 | struct perf_session *session) |
c7929e47 | 2324 | { |
8115d60c ACM |
2325 | __event_process_build_id(&event->build_id, |
2326 | event->build_id.filename, | |
a1645ce1 | 2327 | session); |
c7929e47 TZ |
2328 | return 0; |
2329 | } | |
a1ac1d3c SE |
2330 | |
2331 | void disable_buildid_cache(void) | |
2332 | { | |
2333 | no_buildid_cache = true; | |
2334 | } |