Commit | Line | Data |
---|---|---|
a9072bc0 | 1 | #include "util.h" |
7c6a1c65 | 2 | #include <sys/types.h> |
ba21594c | 3 | #include <byteswap.h> |
7c6a1c65 PZ |
4 | #include <unistd.h> |
5 | #include <stdio.h> | |
6 | #include <stdlib.h> | |
8671dab9 | 7 | #include <linux/list.h> |
ba21594c | 8 | #include <linux/kernel.h> |
b1e5a9be | 9 | #include <linux/bitops.h> |
fbe96f29 | 10 | #include <sys/utsname.h> |
7c6a1c65 | 11 | |
361c99a6 | 12 | #include "evlist.h" |
a91e5431 | 13 | #include "evsel.h" |
7c6a1c65 | 14 | #include "header.h" |
03456a15 FW |
15 | #include "../perf.h" |
16 | #include "trace-event.h" | |
301a0b02 | 17 | #include "session.h" |
8671dab9 | 18 | #include "symbol.h" |
4778d2e4 | 19 | #include "debug.h" |
fbe96f29 | 20 | #include "cpumap.h" |
50a9667c | 21 | #include "pmu.h" |
7dbf4dcf | 22 | #include "vdso.h" |
a1ae5655 | 23 | #include "strbuf.h" |
ebb296c2 | 24 | #include "build-id.h" |
cc9784bd | 25 | #include "data.h" |
7c6a1c65 | 26 | |
fbe96f29 SE |
27 | static u32 header_argc; |
28 | static const char **header_argv; | |
29 | ||
73323f54 SE |
30 | /* |
31 | * magic2 = "PERFILE2" | |
32 | * must be a numerical value to let the endianness | |
33 | * determine the memory layout. That way we are able | |
34 | * to detect endianness when reading the perf.data file | |
35 | * back. | |
36 | * | |
37 | * we check for legacy (PERFFILE) format. | |
38 | */ | |
39 | static const char *__perf_magic1 = "PERFFILE"; | |
40 | static const u64 __perf_magic2 = 0x32454c4946524550ULL; | |
41 | static const u64 __perf_magic2_sw = 0x50455246494c4532ULL; | |
7c6a1c65 | 42 | |
73323f54 | 43 | #define PERF_MAGIC __perf_magic2 |
7c6a1c65 | 44 | |
7c6a1c65 | 45 | struct perf_file_attr { |
cdd6c482 | 46 | struct perf_event_attr attr; |
7c6a1c65 PZ |
47 | struct perf_file_section ids; |
48 | }; | |
49 | ||
1c0b04d1 | 50 | void perf_header__set_feat(struct perf_header *header, int feat) |
8d06367f | 51 | { |
1c0b04d1 | 52 | set_bit(feat, header->adds_features); |
8d06367f ACM |
53 | } |
54 | ||
1c0b04d1 | 55 | void perf_header__clear_feat(struct perf_header *header, int feat) |
baa2f6ce | 56 | { |
1c0b04d1 | 57 | clear_bit(feat, header->adds_features); |
baa2f6ce ACM |
58 | } |
59 | ||
1c0b04d1 | 60 | bool perf_header__has_feat(const struct perf_header *header, int feat) |
8d06367f | 61 | { |
1c0b04d1 | 62 | return test_bit(feat, header->adds_features); |
8d06367f ACM |
63 | } |
64 | ||
3726cc75 | 65 | static int do_write(int fd, const void *buf, size_t size) |
7c6a1c65 PZ |
66 | { |
67 | while (size) { | |
68 | int ret = write(fd, buf, size); | |
69 | ||
70 | if (ret < 0) | |
d5eed904 | 71 | return -errno; |
7c6a1c65 PZ |
72 | |
73 | size -= ret; | |
74 | buf += ret; | |
75 | } | |
3726cc75 ACM |
76 | |
77 | return 0; | |
7c6a1c65 PZ |
78 | } |
79 | ||
e195fac8 | 80 | int write_padded(int fd, const void *bf, size_t count, size_t count_aligned) |
f92cb24c ACM |
81 | { |
82 | static const char zero_buf[NAME_ALIGN]; | |
83 | int err = do_write(fd, bf, count); | |
84 | ||
85 | if (!err) | |
86 | err = do_write(fd, zero_buf, count_aligned - count); | |
87 | ||
88 | return err; | |
89 | } | |
90 | ||
fbe96f29 SE |
91 | static int do_write_string(int fd, const char *str) |
92 | { | |
93 | u32 len, olen; | |
94 | int ret; | |
95 | ||
96 | olen = strlen(str) + 1; | |
9ac3e487 | 97 | len = PERF_ALIGN(olen, NAME_ALIGN); |
fbe96f29 SE |
98 | |
99 | /* write len, incl. \0 */ | |
100 | ret = do_write(fd, &len, sizeof(len)); | |
101 | if (ret < 0) | |
102 | return ret; | |
103 | ||
104 | return write_padded(fd, str, olen, len); | |
105 | } | |
106 | ||
107 | static char *do_read_string(int fd, struct perf_header *ph) | |
108 | { | |
109 | ssize_t sz, ret; | |
110 | u32 len; | |
111 | char *buf; | |
112 | ||
5323f60c | 113 | sz = readn(fd, &len, sizeof(len)); |
fbe96f29 SE |
114 | if (sz < (ssize_t)sizeof(len)) |
115 | return NULL; | |
116 | ||
117 | if (ph->needs_swap) | |
118 | len = bswap_32(len); | |
119 | ||
120 | buf = malloc(len); | |
121 | if (!buf) | |
122 | return NULL; | |
123 | ||
5323f60c | 124 | ret = readn(fd, buf, len); |
fbe96f29 SE |
125 | if (ret == (ssize_t)len) { |
126 | /* | |
127 | * strings are padded by zeroes | |
128 | * thus the actual strlen of buf | |
129 | * may be less than len | |
130 | */ | |
131 | return buf; | |
132 | } | |
133 | ||
134 | free(buf); | |
135 | return NULL; | |
136 | } | |
137 | ||
138 | int | |
139 | perf_header__set_cmdline(int argc, const char **argv) | |
140 | { | |
141 | int i; | |
142 | ||
56e6f602 DA |
143 | /* |
144 | * If header_argv has already been set, do not override it. | |
145 | * This allows a command to set the cmdline, parse args and | |
146 | * then call another builtin function that implements a | |
147 | * command -- e.g, cmd_kvm calling cmd_record. | |
148 | */ | |
149 | if (header_argv) | |
150 | return 0; | |
151 | ||
fbe96f29 SE |
152 | header_argc = (u32)argc; |
153 | ||
154 | /* do not include NULL termination */ | |
155 | header_argv = calloc(argc, sizeof(char *)); | |
156 | if (!header_argv) | |
157 | return -ENOMEM; | |
158 | ||
159 | /* | |
160 | * must copy argv contents because it gets moved | |
161 | * around during option parsing | |
162 | */ | |
163 | for (i = 0; i < argc ; i++) | |
164 | header_argv[i] = argv[i]; | |
165 | ||
166 | return 0; | |
167 | } | |
168 | ||
1d037ca1 | 169 | static int write_tracing_data(int fd, struct perf_header *h __maybe_unused, |
fbe96f29 SE |
170 | struct perf_evlist *evlist) |
171 | { | |
172 | return read_tracing_data(fd, &evlist->entries); | |
173 | } | |
174 | ||
175 | ||
176 | static int write_build_id(int fd, struct perf_header *h, | |
1d037ca1 | 177 | struct perf_evlist *evlist __maybe_unused) |
fbe96f29 SE |
178 | { |
179 | struct perf_session *session; | |
180 | int err; | |
181 | ||
182 | session = container_of(h, struct perf_session, header); | |
183 | ||
e20960c0 RR |
184 | if (!perf_session__read_build_ids(session, true)) |
185 | return -1; | |
186 | ||
714c9c4a | 187 | err = perf_session__write_buildid_table(session, fd); |
fbe96f29 SE |
188 | if (err < 0) { |
189 | pr_debug("failed to write buildid table\n"); | |
190 | return err; | |
191 | } | |
73c5d224 | 192 | perf_session__cache_build_ids(session); |
fbe96f29 SE |
193 | |
194 | return 0; | |
195 | } | |
196 | ||
1d037ca1 IT |
197 | static int write_hostname(int fd, struct perf_header *h __maybe_unused, |
198 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
199 | { |
200 | struct utsname uts; | |
201 | int ret; | |
202 | ||
203 | ret = uname(&uts); | |
204 | if (ret < 0) | |
205 | return -1; | |
206 | ||
207 | return do_write_string(fd, uts.nodename); | |
208 | } | |
209 | ||
1d037ca1 IT |
210 | static int write_osrelease(int fd, struct perf_header *h __maybe_unused, |
211 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
212 | { |
213 | struct utsname uts; | |
214 | int ret; | |
215 | ||
216 | ret = uname(&uts); | |
217 | if (ret < 0) | |
218 | return -1; | |
219 | ||
220 | return do_write_string(fd, uts.release); | |
221 | } | |
222 | ||
1d037ca1 IT |
223 | static int write_arch(int fd, struct perf_header *h __maybe_unused, |
224 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
225 | { |
226 | struct utsname uts; | |
227 | int ret; | |
228 | ||
229 | ret = uname(&uts); | |
230 | if (ret < 0) | |
231 | return -1; | |
232 | ||
233 | return do_write_string(fd, uts.machine); | |
234 | } | |
235 | ||
1d037ca1 IT |
236 | static int write_version(int fd, struct perf_header *h __maybe_unused, |
237 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
238 | { |
239 | return do_write_string(fd, perf_version_string); | |
240 | } | |
241 | ||
493c3031 | 242 | static int __write_cpudesc(int fd, const char *cpuinfo_proc) |
fbe96f29 | 243 | { |
fbe96f29 SE |
244 | FILE *file; |
245 | char *buf = NULL; | |
246 | char *s, *p; | |
493c3031 | 247 | const char *search = cpuinfo_proc; |
fbe96f29 SE |
248 | size_t len = 0; |
249 | int ret = -1; | |
250 | ||
251 | if (!search) | |
252 | return -1; | |
253 | ||
254 | file = fopen("/proc/cpuinfo", "r"); | |
255 | if (!file) | |
256 | return -1; | |
257 | ||
258 | while (getline(&buf, &len, file) > 0) { | |
259 | ret = strncmp(buf, search, strlen(search)); | |
260 | if (!ret) | |
261 | break; | |
262 | } | |
263 | ||
ed307758 WN |
264 | if (ret) { |
265 | ret = -1; | |
fbe96f29 | 266 | goto done; |
ed307758 | 267 | } |
fbe96f29 SE |
268 | |
269 | s = buf; | |
270 | ||
271 | p = strchr(buf, ':'); | |
272 | if (p && *(p+1) == ' ' && *(p+2)) | |
273 | s = p + 2; | |
274 | p = strchr(s, '\n'); | |
275 | if (p) | |
276 | *p = '\0'; | |
277 | ||
278 | /* squash extra space characters (branding string) */ | |
279 | p = s; | |
280 | while (*p) { | |
281 | if (isspace(*p)) { | |
282 | char *r = p + 1; | |
283 | char *q = r; | |
284 | *p = ' '; | |
285 | while (*q && isspace(*q)) | |
286 | q++; | |
287 | if (q != (p+1)) | |
288 | while ((*r++ = *q++)); | |
289 | } | |
290 | p++; | |
291 | } | |
292 | ret = do_write_string(fd, s); | |
293 | done: | |
294 | free(buf); | |
295 | fclose(file); | |
296 | return ret; | |
297 | } | |
298 | ||
493c3031 WN |
299 | static int write_cpudesc(int fd, struct perf_header *h __maybe_unused, |
300 | struct perf_evlist *evlist __maybe_unused) | |
301 | { | |
302 | #ifndef CPUINFO_PROC | |
303 | #define CPUINFO_PROC {"model name", } | |
304 | #endif | |
305 | const char *cpuinfo_procs[] = CPUINFO_PROC; | |
306 | unsigned int i; | |
307 | ||
308 | for (i = 0; i < ARRAY_SIZE(cpuinfo_procs); i++) { | |
309 | int ret; | |
310 | ret = __write_cpudesc(fd, cpuinfo_procs[i]); | |
311 | if (ret >= 0) | |
312 | return ret; | |
313 | } | |
314 | return -1; | |
315 | } | |
316 | ||
317 | ||
1d037ca1 IT |
318 | static int write_nrcpus(int fd, struct perf_header *h __maybe_unused, |
319 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
320 | { |
321 | long nr; | |
322 | u32 nrc, nra; | |
323 | int ret; | |
324 | ||
325 | nr = sysconf(_SC_NPROCESSORS_CONF); | |
326 | if (nr < 0) | |
327 | return -1; | |
328 | ||
329 | nrc = (u32)(nr & UINT_MAX); | |
330 | ||
331 | nr = sysconf(_SC_NPROCESSORS_ONLN); | |
332 | if (nr < 0) | |
333 | return -1; | |
334 | ||
335 | nra = (u32)(nr & UINT_MAX); | |
336 | ||
337 | ret = do_write(fd, &nrc, sizeof(nrc)); | |
338 | if (ret < 0) | |
339 | return ret; | |
340 | ||
341 | return do_write(fd, &nra, sizeof(nra)); | |
342 | } | |
343 | ||
1d037ca1 | 344 | static int write_event_desc(int fd, struct perf_header *h __maybe_unused, |
fbe96f29 SE |
345 | struct perf_evlist *evlist) |
346 | { | |
6606f873 | 347 | struct perf_evsel *evsel; |
74ba9e11 | 348 | u32 nre, nri, sz; |
fbe96f29 SE |
349 | int ret; |
350 | ||
74ba9e11 | 351 | nre = evlist->nr_entries; |
fbe96f29 SE |
352 | |
353 | /* | |
354 | * write number of events | |
355 | */ | |
356 | ret = do_write(fd, &nre, sizeof(nre)); | |
357 | if (ret < 0) | |
358 | return ret; | |
359 | ||
360 | /* | |
361 | * size of perf_event_attr struct | |
362 | */ | |
6606f873 | 363 | sz = (u32)sizeof(evsel->attr); |
fbe96f29 SE |
364 | ret = do_write(fd, &sz, sizeof(sz)); |
365 | if (ret < 0) | |
366 | return ret; | |
367 | ||
0050f7aa | 368 | evlist__for_each(evlist, evsel) { |
6606f873 | 369 | ret = do_write(fd, &evsel->attr, sz); |
fbe96f29 SE |
370 | if (ret < 0) |
371 | return ret; | |
372 | /* | |
373 | * write number of unique id per event | |
374 | * there is one id per instance of an event | |
375 | * | |
376 | * copy into an nri to be independent of the | |
377 | * type of ids, | |
378 | */ | |
6606f873 | 379 | nri = evsel->ids; |
fbe96f29 SE |
380 | ret = do_write(fd, &nri, sizeof(nri)); |
381 | if (ret < 0) | |
382 | return ret; | |
383 | ||
384 | /* | |
385 | * write event string as passed on cmdline | |
386 | */ | |
6606f873 | 387 | ret = do_write_string(fd, perf_evsel__name(evsel)); |
fbe96f29 SE |
388 | if (ret < 0) |
389 | return ret; | |
390 | /* | |
391 | * write unique ids for this event | |
392 | */ | |
6606f873 | 393 | ret = do_write(fd, evsel->id, evsel->ids * sizeof(u64)); |
fbe96f29 SE |
394 | if (ret < 0) |
395 | return ret; | |
396 | } | |
397 | return 0; | |
398 | } | |
399 | ||
1d037ca1 IT |
400 | static int write_cmdline(int fd, struct perf_header *h __maybe_unused, |
401 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
402 | { |
403 | char buf[MAXPATHLEN]; | |
404 | char proc[32]; | |
405 | u32 i, n; | |
406 | int ret; | |
407 | ||
408 | /* | |
409 | * actual atual path to perf binary | |
410 | */ | |
411 | sprintf(proc, "/proc/%d/exe", getpid()); | |
412 | ret = readlink(proc, buf, sizeof(buf)); | |
413 | if (ret <= 0) | |
414 | return -1; | |
415 | ||
416 | /* readlink() does not add null termination */ | |
417 | buf[ret] = '\0'; | |
418 | ||
419 | /* account for binary path */ | |
420 | n = header_argc + 1; | |
421 | ||
422 | ret = do_write(fd, &n, sizeof(n)); | |
423 | if (ret < 0) | |
424 | return ret; | |
425 | ||
426 | ret = do_write_string(fd, buf); | |
427 | if (ret < 0) | |
428 | return ret; | |
429 | ||
430 | for (i = 0 ; i < header_argc; i++) { | |
431 | ret = do_write_string(fd, header_argv[i]); | |
432 | if (ret < 0) | |
433 | return ret; | |
434 | } | |
435 | return 0; | |
436 | } | |
437 | ||
438 | #define CORE_SIB_FMT \ | |
439 | "/sys/devices/system/cpu/cpu%d/topology/core_siblings_list" | |
440 | #define THRD_SIB_FMT \ | |
441 | "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list" | |
442 | ||
443 | struct cpu_topo { | |
444 | u32 core_sib; | |
445 | u32 thread_sib; | |
446 | char **core_siblings; | |
447 | char **thread_siblings; | |
448 | }; | |
449 | ||
450 | static int build_cpu_topo(struct cpu_topo *tp, int cpu) | |
451 | { | |
452 | FILE *fp; | |
453 | char filename[MAXPATHLEN]; | |
454 | char *buf = NULL, *p; | |
455 | size_t len = 0; | |
c5885749 | 456 | ssize_t sret; |
fbe96f29 SE |
457 | u32 i = 0; |
458 | int ret = -1; | |
459 | ||
460 | sprintf(filename, CORE_SIB_FMT, cpu); | |
461 | fp = fopen(filename, "r"); | |
462 | if (!fp) | |
c5885749 | 463 | goto try_threads; |
fbe96f29 | 464 | |
c5885749 | 465 | sret = getline(&buf, &len, fp); |
fbe96f29 | 466 | fclose(fp); |
c5885749 SE |
467 | if (sret <= 0) |
468 | goto try_threads; | |
fbe96f29 SE |
469 | |
470 | p = strchr(buf, '\n'); | |
471 | if (p) | |
472 | *p = '\0'; | |
473 | ||
474 | for (i = 0; i < tp->core_sib; i++) { | |
475 | if (!strcmp(buf, tp->core_siblings[i])) | |
476 | break; | |
477 | } | |
478 | if (i == tp->core_sib) { | |
479 | tp->core_siblings[i] = buf; | |
480 | tp->core_sib++; | |
481 | buf = NULL; | |
482 | len = 0; | |
483 | } | |
c5885749 | 484 | ret = 0; |
fbe96f29 | 485 | |
c5885749 | 486 | try_threads: |
fbe96f29 SE |
487 | sprintf(filename, THRD_SIB_FMT, cpu); |
488 | fp = fopen(filename, "r"); | |
489 | if (!fp) | |
490 | goto done; | |
491 | ||
492 | if (getline(&buf, &len, fp) <= 0) | |
493 | goto done; | |
494 | ||
495 | p = strchr(buf, '\n'); | |
496 | if (p) | |
497 | *p = '\0'; | |
498 | ||
499 | for (i = 0; i < tp->thread_sib; i++) { | |
500 | if (!strcmp(buf, tp->thread_siblings[i])) | |
501 | break; | |
502 | } | |
503 | if (i == tp->thread_sib) { | |
504 | tp->thread_siblings[i] = buf; | |
505 | tp->thread_sib++; | |
506 | buf = NULL; | |
507 | } | |
508 | ret = 0; | |
509 | done: | |
510 | if(fp) | |
511 | fclose(fp); | |
512 | free(buf); | |
513 | return ret; | |
514 | } | |
515 | ||
516 | static void free_cpu_topo(struct cpu_topo *tp) | |
517 | { | |
518 | u32 i; | |
519 | ||
520 | if (!tp) | |
521 | return; | |
522 | ||
523 | for (i = 0 ; i < tp->core_sib; i++) | |
74cf249d | 524 | zfree(&tp->core_siblings[i]); |
fbe96f29 SE |
525 | |
526 | for (i = 0 ; i < tp->thread_sib; i++) | |
74cf249d | 527 | zfree(&tp->thread_siblings[i]); |
fbe96f29 SE |
528 | |
529 | free(tp); | |
530 | } | |
531 | ||
532 | static struct cpu_topo *build_cpu_topology(void) | |
533 | { | |
534 | struct cpu_topo *tp; | |
535 | void *addr; | |
536 | u32 nr, i; | |
537 | size_t sz; | |
538 | long ncpus; | |
539 | int ret = -1; | |
540 | ||
541 | ncpus = sysconf(_SC_NPROCESSORS_CONF); | |
542 | if (ncpus < 0) | |
543 | return NULL; | |
544 | ||
545 | nr = (u32)(ncpus & UINT_MAX); | |
546 | ||
547 | sz = nr * sizeof(char *); | |
548 | ||
549 | addr = calloc(1, sizeof(*tp) + 2 * sz); | |
550 | if (!addr) | |
551 | return NULL; | |
552 | ||
553 | tp = addr; | |
554 | ||
555 | addr += sizeof(*tp); | |
556 | tp->core_siblings = addr; | |
557 | addr += sz; | |
558 | tp->thread_siblings = addr; | |
559 | ||
560 | for (i = 0; i < nr; i++) { | |
561 | ret = build_cpu_topo(tp, i); | |
562 | if (ret < 0) | |
563 | break; | |
564 | } | |
565 | if (ret) { | |
566 | free_cpu_topo(tp); | |
567 | tp = NULL; | |
568 | } | |
569 | return tp; | |
570 | } | |
571 | ||
1d037ca1 IT |
572 | static int write_cpu_topology(int fd, struct perf_header *h __maybe_unused, |
573 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
574 | { |
575 | struct cpu_topo *tp; | |
576 | u32 i; | |
577 | int ret; | |
578 | ||
579 | tp = build_cpu_topology(); | |
580 | if (!tp) | |
581 | return -1; | |
582 | ||
583 | ret = do_write(fd, &tp->core_sib, sizeof(tp->core_sib)); | |
584 | if (ret < 0) | |
585 | goto done; | |
586 | ||
587 | for (i = 0; i < tp->core_sib; i++) { | |
588 | ret = do_write_string(fd, tp->core_siblings[i]); | |
589 | if (ret < 0) | |
590 | goto done; | |
591 | } | |
592 | ret = do_write(fd, &tp->thread_sib, sizeof(tp->thread_sib)); | |
593 | if (ret < 0) | |
594 | goto done; | |
595 | ||
596 | for (i = 0; i < tp->thread_sib; i++) { | |
597 | ret = do_write_string(fd, tp->thread_siblings[i]); | |
598 | if (ret < 0) | |
599 | break; | |
600 | } | |
601 | done: | |
602 | free_cpu_topo(tp); | |
603 | return ret; | |
604 | } | |
605 | ||
606 | ||
607 | ||
1d037ca1 IT |
608 | static int write_total_mem(int fd, struct perf_header *h __maybe_unused, |
609 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
610 | { |
611 | char *buf = NULL; | |
612 | FILE *fp; | |
613 | size_t len = 0; | |
614 | int ret = -1, n; | |
615 | uint64_t mem; | |
616 | ||
617 | fp = fopen("/proc/meminfo", "r"); | |
618 | if (!fp) | |
619 | return -1; | |
620 | ||
621 | while (getline(&buf, &len, fp) > 0) { | |
622 | ret = strncmp(buf, "MemTotal:", 9); | |
623 | if (!ret) | |
624 | break; | |
625 | } | |
626 | if (!ret) { | |
627 | n = sscanf(buf, "%*s %"PRIu64, &mem); | |
628 | if (n == 1) | |
629 | ret = do_write(fd, &mem, sizeof(mem)); | |
ed307758 WN |
630 | } else |
631 | ret = -1; | |
fbe96f29 SE |
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; | |
a761a2d8 | 656 | if (sscanf(buf, "%*s %*d %31s %"PRIu64, field, &mem) != 2) |
fbe96f29 SE |
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); | |
5809fde0 | 665 | fp = NULL; |
fbe96f29 SE |
666 | |
667 | ret = do_write(fd, &mem_total, sizeof(u64)); | |
668 | if (ret) | |
669 | goto done; | |
670 | ||
671 | ret = do_write(fd, &mem_free, sizeof(u64)); | |
672 | if (ret) | |
673 | goto done; | |
674 | ||
675 | ret = -1; | |
676 | sprintf(str, "/sys/devices/system/node/node%d/cpulist", node); | |
677 | ||
678 | fp = fopen(str, "r"); | |
679 | if (!fp) | |
680 | goto done; | |
681 | ||
682 | if (getline(&buf, &len, fp) <= 0) | |
683 | goto done; | |
684 | ||
685 | p = strchr(buf, '\n'); | |
686 | if (p) | |
687 | *p = '\0'; | |
688 | ||
689 | ret = do_write_string(fd, buf); | |
690 | done: | |
691 | free(buf); | |
5809fde0 TJ |
692 | if (fp) |
693 | fclose(fp); | |
fbe96f29 SE |
694 | return ret; |
695 | } | |
696 | ||
1d037ca1 IT |
697 | static int write_numa_topology(int fd, struct perf_header *h __maybe_unused, |
698 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
699 | { |
700 | char *buf = NULL; | |
701 | size_t len = 0; | |
702 | FILE *fp; | |
703 | struct cpu_map *node_map = NULL; | |
704 | char *c; | |
705 | u32 nr, i, j; | |
706 | int ret = -1; | |
707 | ||
708 | fp = fopen("/sys/devices/system/node/online", "r"); | |
709 | if (!fp) | |
710 | return -1; | |
711 | ||
712 | if (getline(&buf, &len, fp) <= 0) | |
713 | goto done; | |
714 | ||
715 | c = strchr(buf, '\n'); | |
716 | if (c) | |
717 | *c = '\0'; | |
718 | ||
719 | node_map = cpu_map__new(buf); | |
720 | if (!node_map) | |
721 | goto done; | |
722 | ||
723 | nr = (u32)node_map->nr; | |
724 | ||
725 | ret = do_write(fd, &nr, sizeof(nr)); | |
726 | if (ret < 0) | |
727 | goto done; | |
728 | ||
729 | for (i = 0; i < nr; i++) { | |
730 | j = (u32)node_map->map[i]; | |
731 | ret = do_write(fd, &j, sizeof(j)); | |
732 | if (ret < 0) | |
733 | break; | |
734 | ||
735 | ret = write_topo_node(fd, i); | |
736 | if (ret < 0) | |
737 | break; | |
738 | } | |
739 | done: | |
740 | free(buf); | |
741 | fclose(fp); | |
742 | free(node_map); | |
743 | return ret; | |
744 | } | |
745 | ||
50a9667c RR |
746 | /* |
747 | * File format: | |
748 | * | |
749 | * struct pmu_mappings { | |
750 | * u32 pmu_num; | |
751 | * struct pmu_map { | |
752 | * u32 type; | |
753 | * char name[]; | |
754 | * }[pmu_num]; | |
755 | * }; | |
756 | */ | |
757 | ||
1d037ca1 IT |
758 | static int write_pmu_mappings(int fd, struct perf_header *h __maybe_unused, |
759 | struct perf_evlist *evlist __maybe_unused) | |
50a9667c RR |
760 | { |
761 | struct perf_pmu *pmu = NULL; | |
762 | off_t offset = lseek(fd, 0, SEEK_CUR); | |
763 | __u32 pmu_num = 0; | |
5323f60c | 764 | int ret; |
50a9667c RR |
765 | |
766 | /* write real pmu_num later */ | |
5323f60c NK |
767 | ret = do_write(fd, &pmu_num, sizeof(pmu_num)); |
768 | if (ret < 0) | |
769 | return ret; | |
50a9667c RR |
770 | |
771 | while ((pmu = perf_pmu__scan(pmu))) { | |
772 | if (!pmu->name) | |
773 | continue; | |
774 | pmu_num++; | |
5323f60c NK |
775 | |
776 | ret = do_write(fd, &pmu->type, sizeof(pmu->type)); | |
777 | if (ret < 0) | |
778 | return ret; | |
779 | ||
780 | ret = do_write_string(fd, pmu->name); | |
781 | if (ret < 0) | |
782 | return ret; | |
50a9667c RR |
783 | } |
784 | ||
785 | if (pwrite(fd, &pmu_num, sizeof(pmu_num), offset) != sizeof(pmu_num)) { | |
786 | /* discard all */ | |
787 | lseek(fd, offset, SEEK_SET); | |
788 | return -1; | |
789 | } | |
790 | ||
791 | return 0; | |
792 | } | |
793 | ||
a8bb559b NK |
794 | /* |
795 | * File format: | |
796 | * | |
797 | * struct group_descs { | |
798 | * u32 nr_groups; | |
799 | * struct group_desc { | |
800 | * char name[]; | |
801 | * u32 leader_idx; | |
802 | * u32 nr_members; | |
803 | * }[nr_groups]; | |
804 | * }; | |
805 | */ | |
806 | static int write_group_desc(int fd, struct perf_header *h __maybe_unused, | |
807 | struct perf_evlist *evlist) | |
808 | { | |
809 | u32 nr_groups = evlist->nr_groups; | |
810 | struct perf_evsel *evsel; | |
811 | int ret; | |
812 | ||
813 | ret = do_write(fd, &nr_groups, sizeof(nr_groups)); | |
814 | if (ret < 0) | |
815 | return ret; | |
816 | ||
0050f7aa | 817 | evlist__for_each(evlist, evsel) { |
a8bb559b NK |
818 | if (perf_evsel__is_group_leader(evsel) && |
819 | evsel->nr_members > 1) { | |
820 | const char *name = evsel->group_name ?: "{anon_group}"; | |
821 | u32 leader_idx = evsel->idx; | |
822 | u32 nr_members = evsel->nr_members; | |
823 | ||
824 | ret = do_write_string(fd, name); | |
825 | if (ret < 0) | |
826 | return ret; | |
827 | ||
828 | ret = do_write(fd, &leader_idx, sizeof(leader_idx)); | |
829 | if (ret < 0) | |
830 | return ret; | |
831 | ||
832 | ret = do_write(fd, &nr_members, sizeof(nr_members)); | |
833 | if (ret < 0) | |
834 | return ret; | |
835 | } | |
836 | } | |
837 | return 0; | |
838 | } | |
839 | ||
fbe96f29 SE |
840 | /* |
841 | * default get_cpuid(): nothing gets recorded | |
842 | * actual implementation must be in arch/$(ARCH)/util/header.c | |
843 | */ | |
1d037ca1 IT |
844 | int __attribute__ ((weak)) get_cpuid(char *buffer __maybe_unused, |
845 | size_t sz __maybe_unused) | |
fbe96f29 SE |
846 | { |
847 | return -1; | |
848 | } | |
849 | ||
1d037ca1 IT |
850 | static int write_cpuid(int fd, struct perf_header *h __maybe_unused, |
851 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
852 | { |
853 | char buffer[64]; | |
854 | int ret; | |
855 | ||
856 | ret = get_cpuid(buffer, sizeof(buffer)); | |
857 | if (!ret) | |
858 | goto write_it; | |
859 | ||
860 | return -1; | |
861 | write_it: | |
862 | return do_write_string(fd, buffer); | |
863 | } | |
864 | ||
1d037ca1 IT |
865 | static int write_branch_stack(int fd __maybe_unused, |
866 | struct perf_header *h __maybe_unused, | |
867 | struct perf_evlist *evlist __maybe_unused) | |
330aa675 SE |
868 | { |
869 | return 0; | |
870 | } | |
871 | ||
4025ea40 AH |
872 | static int write_auxtrace(int fd __maybe_unused, |
873 | struct perf_header *h __maybe_unused, | |
874 | struct perf_evlist *evlist __maybe_unused) | |
875 | { | |
876 | return 0; | |
877 | } | |
878 | ||
7e94cfcc NK |
879 | static void print_hostname(struct perf_header *ph, int fd __maybe_unused, |
880 | FILE *fp) | |
fbe96f29 | 881 | { |
7e94cfcc | 882 | fprintf(fp, "# hostname : %s\n", ph->env.hostname); |
fbe96f29 SE |
883 | } |
884 | ||
7e94cfcc NK |
885 | static void print_osrelease(struct perf_header *ph, int fd __maybe_unused, |
886 | FILE *fp) | |
fbe96f29 | 887 | { |
7e94cfcc | 888 | fprintf(fp, "# os release : %s\n", ph->env.os_release); |
fbe96f29 SE |
889 | } |
890 | ||
7e94cfcc | 891 | static void print_arch(struct perf_header *ph, int fd __maybe_unused, FILE *fp) |
fbe96f29 | 892 | { |
7e94cfcc | 893 | fprintf(fp, "# arch : %s\n", ph->env.arch); |
fbe96f29 SE |
894 | } |
895 | ||
7e94cfcc NK |
896 | static void print_cpudesc(struct perf_header *ph, int fd __maybe_unused, |
897 | FILE *fp) | |
fbe96f29 | 898 | { |
7e94cfcc | 899 | fprintf(fp, "# cpudesc : %s\n", ph->env.cpu_desc); |
fbe96f29 SE |
900 | } |
901 | ||
7e94cfcc NK |
902 | static void print_nrcpus(struct perf_header *ph, int fd __maybe_unused, |
903 | FILE *fp) | |
fbe96f29 | 904 | { |
7e94cfcc NK |
905 | fprintf(fp, "# nrcpus online : %u\n", ph->env.nr_cpus_online); |
906 | fprintf(fp, "# nrcpus avail : %u\n", ph->env.nr_cpus_avail); | |
fbe96f29 SE |
907 | } |
908 | ||
7e94cfcc NK |
909 | static void print_version(struct perf_header *ph, int fd __maybe_unused, |
910 | FILE *fp) | |
fbe96f29 | 911 | { |
7e94cfcc | 912 | fprintf(fp, "# perf version : %s\n", ph->env.version); |
fbe96f29 SE |
913 | } |
914 | ||
7e94cfcc NK |
915 | static void print_cmdline(struct perf_header *ph, int fd __maybe_unused, |
916 | FILE *fp) | |
fbe96f29 | 917 | { |
7e94cfcc | 918 | int nr, i; |
fbe96f29 | 919 | char *str; |
fbe96f29 | 920 | |
7e94cfcc NK |
921 | nr = ph->env.nr_cmdline; |
922 | str = ph->env.cmdline; | |
fbe96f29 SE |
923 | |
924 | fprintf(fp, "# cmdline : "); | |
925 | ||
926 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 927 | fprintf(fp, "%s ", str); |
7e94cfcc | 928 | str += strlen(str) + 1; |
fbe96f29 SE |
929 | } |
930 | fputc('\n', fp); | |
931 | } | |
932 | ||
7e94cfcc NK |
933 | static void print_cpu_topology(struct perf_header *ph, int fd __maybe_unused, |
934 | FILE *fp) | |
fbe96f29 | 935 | { |
7e94cfcc | 936 | int nr, i; |
fbe96f29 SE |
937 | char *str; |
938 | ||
7e94cfcc NK |
939 | nr = ph->env.nr_sibling_cores; |
940 | str = ph->env.sibling_cores; | |
fbe96f29 SE |
941 | |
942 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 943 | fprintf(fp, "# sibling cores : %s\n", str); |
7e94cfcc | 944 | str += strlen(str) + 1; |
fbe96f29 SE |
945 | } |
946 | ||
7e94cfcc NK |
947 | nr = ph->env.nr_sibling_threads; |
948 | str = ph->env.sibling_threads; | |
fbe96f29 SE |
949 | |
950 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 951 | fprintf(fp, "# sibling threads : %s\n", str); |
7e94cfcc | 952 | str += strlen(str) + 1; |
fbe96f29 SE |
953 | } |
954 | } | |
955 | ||
4e1b9c67 | 956 | static void free_event_desc(struct perf_evsel *events) |
fbe96f29 | 957 | { |
4e1b9c67 RR |
958 | struct perf_evsel *evsel; |
959 | ||
960 | if (!events) | |
961 | return; | |
962 | ||
963 | for (evsel = events; evsel->attr.size; evsel++) { | |
74cf249d ACM |
964 | zfree(&evsel->name); |
965 | zfree(&evsel->id); | |
4e1b9c67 RR |
966 | } |
967 | ||
968 | free(events); | |
969 | } | |
970 | ||
971 | static struct perf_evsel * | |
972 | read_event_desc(struct perf_header *ph, int fd) | |
973 | { | |
974 | struct perf_evsel *evsel, *events = NULL; | |
975 | u64 *id; | |
fbe96f29 | 976 | void *buf = NULL; |
62db9068 SE |
977 | u32 nre, sz, nr, i, j; |
978 | ssize_t ret; | |
979 | size_t msz; | |
fbe96f29 SE |
980 | |
981 | /* number of events */ | |
5323f60c | 982 | ret = readn(fd, &nre, sizeof(nre)); |
fbe96f29 SE |
983 | if (ret != (ssize_t)sizeof(nre)) |
984 | goto error; | |
985 | ||
986 | if (ph->needs_swap) | |
987 | nre = bswap_32(nre); | |
988 | ||
5323f60c | 989 | ret = readn(fd, &sz, sizeof(sz)); |
fbe96f29 SE |
990 | if (ret != (ssize_t)sizeof(sz)) |
991 | goto error; | |
992 | ||
993 | if (ph->needs_swap) | |
994 | sz = bswap_32(sz); | |
995 | ||
62db9068 | 996 | /* buffer to hold on file attr struct */ |
fbe96f29 SE |
997 | buf = malloc(sz); |
998 | if (!buf) | |
999 | goto error; | |
1000 | ||
4e1b9c67 RR |
1001 | /* the last event terminates with evsel->attr.size == 0: */ |
1002 | events = calloc(nre + 1, sizeof(*events)); | |
1003 | if (!events) | |
1004 | goto error; | |
1005 | ||
1006 | msz = sizeof(evsel->attr); | |
9fafd98f | 1007 | if (sz < msz) |
fbe96f29 SE |
1008 | msz = sz; |
1009 | ||
4e1b9c67 RR |
1010 | for (i = 0, evsel = events; i < nre; evsel++, i++) { |
1011 | evsel->idx = i; | |
fbe96f29 | 1012 | |
62db9068 SE |
1013 | /* |
1014 | * must read entire on-file attr struct to | |
1015 | * sync up with layout. | |
1016 | */ | |
5323f60c | 1017 | ret = readn(fd, buf, sz); |
fbe96f29 SE |
1018 | if (ret != (ssize_t)sz) |
1019 | goto error; | |
1020 | ||
1021 | if (ph->needs_swap) | |
1022 | perf_event__attr_swap(buf); | |
1023 | ||
4e1b9c67 | 1024 | memcpy(&evsel->attr, buf, msz); |
fbe96f29 | 1025 | |
5323f60c | 1026 | ret = readn(fd, &nr, sizeof(nr)); |
fbe96f29 SE |
1027 | if (ret != (ssize_t)sizeof(nr)) |
1028 | goto error; | |
1029 | ||
0807d2d8 | 1030 | if (ph->needs_swap) { |
fbe96f29 | 1031 | nr = bswap_32(nr); |
0807d2d8 ACM |
1032 | evsel->needs_swap = true; |
1033 | } | |
fbe96f29 | 1034 | |
4e1b9c67 RR |
1035 | evsel->name = do_read_string(fd, ph); |
1036 | ||
1037 | if (!nr) | |
1038 | continue; | |
1039 | ||
1040 | id = calloc(nr, sizeof(*id)); | |
1041 | if (!id) | |
1042 | goto error; | |
1043 | evsel->ids = nr; | |
1044 | evsel->id = id; | |
1045 | ||
1046 | for (j = 0 ; j < nr; j++) { | |
5323f60c | 1047 | ret = readn(fd, id, sizeof(*id)); |
4e1b9c67 RR |
1048 | if (ret != (ssize_t)sizeof(*id)) |
1049 | goto error; | |
1050 | if (ph->needs_swap) | |
1051 | *id = bswap_64(*id); | |
1052 | id++; | |
1053 | } | |
1054 | } | |
1055 | out: | |
04662523 | 1056 | free(buf); |
4e1b9c67 RR |
1057 | return events; |
1058 | error: | |
1059 | if (events) | |
1060 | free_event_desc(events); | |
1061 | events = NULL; | |
1062 | goto out; | |
1063 | } | |
1064 | ||
2c5e8c52 PZ |
1065 | static int __desc_attr__fprintf(FILE *fp, const char *name, const char *val, |
1066 | void *priv __attribute__((unused))) | |
1067 | { | |
1068 | return fprintf(fp, ", %s = %s", name, val); | |
1069 | } | |
1070 | ||
4e1b9c67 RR |
1071 | static void print_event_desc(struct perf_header *ph, int fd, FILE *fp) |
1072 | { | |
1073 | struct perf_evsel *evsel, *events = read_event_desc(ph, fd); | |
1074 | u32 j; | |
1075 | u64 *id; | |
1076 | ||
1077 | if (!events) { | |
1078 | fprintf(fp, "# event desc: not available or unable to read\n"); | |
1079 | return; | |
1080 | } | |
1081 | ||
1082 | for (evsel = events; evsel->attr.size; evsel++) { | |
1083 | fprintf(fp, "# event : name = %s, ", evsel->name); | |
fbe96f29 | 1084 | |
4e1b9c67 | 1085 | if (evsel->ids) { |
fbe96f29 | 1086 | fprintf(fp, ", id = {"); |
4e1b9c67 RR |
1087 | for (j = 0, id = evsel->id; j < evsel->ids; j++, id++) { |
1088 | if (j) | |
1089 | fputc(',', fp); | |
1090 | fprintf(fp, " %"PRIu64, *id); | |
1091 | } | |
fbe96f29 | 1092 | fprintf(fp, " }"); |
4e1b9c67 | 1093 | } |
814c8c38 | 1094 | |
2c5e8c52 | 1095 | perf_event_attr__fprintf(fp, &evsel->attr, __desc_attr__fprintf, NULL); |
4e1b9c67 | 1096 | |
fbe96f29 SE |
1097 | fputc('\n', fp); |
1098 | } | |
4e1b9c67 RR |
1099 | |
1100 | free_event_desc(events); | |
fbe96f29 SE |
1101 | } |
1102 | ||
7e94cfcc | 1103 | static void print_total_mem(struct perf_header *ph, int fd __maybe_unused, |
1d037ca1 | 1104 | FILE *fp) |
fbe96f29 | 1105 | { |
7e94cfcc | 1106 | fprintf(fp, "# total memory : %Lu kB\n", ph->env.total_mem); |
fbe96f29 SE |
1107 | } |
1108 | ||
7e94cfcc | 1109 | static void print_numa_topology(struct perf_header *ph, int fd __maybe_unused, |
1d037ca1 | 1110 | FILE *fp) |
fbe96f29 | 1111 | { |
fbe96f29 | 1112 | u32 nr, c, i; |
7e94cfcc | 1113 | char *str, *tmp; |
fbe96f29 SE |
1114 | uint64_t mem_total, mem_free; |
1115 | ||
1116 | /* nr nodes */ | |
7e94cfcc NK |
1117 | nr = ph->env.nr_numa_nodes; |
1118 | str = ph->env.numa_nodes; | |
fbe96f29 SE |
1119 | |
1120 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 1121 | /* node number */ |
7e94cfcc NK |
1122 | c = strtoul(str, &tmp, 0); |
1123 | if (*tmp != ':') | |
fbe96f29 SE |
1124 | goto error; |
1125 | ||
7e94cfcc NK |
1126 | str = tmp + 1; |
1127 | mem_total = strtoull(str, &tmp, 0); | |
1128 | if (*tmp != ':') | |
fbe96f29 SE |
1129 | goto error; |
1130 | ||
7e94cfcc NK |
1131 | str = tmp + 1; |
1132 | mem_free = strtoull(str, &tmp, 0); | |
1133 | if (*tmp != ':') | |
fbe96f29 SE |
1134 | goto error; |
1135 | ||
fbe96f29 SE |
1136 | fprintf(fp, "# node%u meminfo : total = %"PRIu64" kB," |
1137 | " free = %"PRIu64" kB\n", | |
7e94cfcc | 1138 | c, mem_total, mem_free); |
fbe96f29 | 1139 | |
7e94cfcc | 1140 | str = tmp + 1; |
fbe96f29 | 1141 | fprintf(fp, "# node%u cpu list : %s\n", c, str); |
1234471e NK |
1142 | |
1143 | str += strlen(str) + 1; | |
fbe96f29 SE |
1144 | } |
1145 | return; | |
1146 | error: | |
1147 | fprintf(fp, "# numa topology : not available\n"); | |
1148 | } | |
1149 | ||
7e94cfcc | 1150 | static void print_cpuid(struct perf_header *ph, int fd __maybe_unused, FILE *fp) |
fbe96f29 | 1151 | { |
7e94cfcc | 1152 | fprintf(fp, "# cpuid : %s\n", ph->env.cpuid); |
fbe96f29 SE |
1153 | } |
1154 | ||
1d037ca1 | 1155 | static void print_branch_stack(struct perf_header *ph __maybe_unused, |
7e94cfcc | 1156 | int fd __maybe_unused, FILE *fp) |
330aa675 SE |
1157 | { |
1158 | fprintf(fp, "# contains samples with branch stack\n"); | |
1159 | } | |
1160 | ||
4025ea40 AH |
1161 | static void print_auxtrace(struct perf_header *ph __maybe_unused, |
1162 | int fd __maybe_unused, FILE *fp) | |
1163 | { | |
1164 | fprintf(fp, "# contains AUX area data (e.g. instruction trace)\n"); | |
1165 | } | |
1166 | ||
7e94cfcc NK |
1167 | static void print_pmu_mappings(struct perf_header *ph, int fd __maybe_unused, |
1168 | FILE *fp) | |
50a9667c RR |
1169 | { |
1170 | const char *delimiter = "# pmu mappings: "; | |
7e94cfcc | 1171 | char *str, *tmp; |
50a9667c RR |
1172 | u32 pmu_num; |
1173 | u32 type; | |
1174 | ||
7e94cfcc | 1175 | pmu_num = ph->env.nr_pmu_mappings; |
50a9667c RR |
1176 | if (!pmu_num) { |
1177 | fprintf(fp, "# pmu mappings: not available\n"); | |
1178 | return; | |
1179 | } | |
1180 | ||
7e94cfcc NK |
1181 | str = ph->env.pmu_mappings; |
1182 | ||
50a9667c | 1183 | while (pmu_num) { |
7e94cfcc NK |
1184 | type = strtoul(str, &tmp, 0); |
1185 | if (*tmp != ':') | |
1186 | goto error; | |
1187 | ||
1188 | str = tmp + 1; | |
1189 | fprintf(fp, "%s%s = %" PRIu32, delimiter, str, type); | |
be4a2ded | 1190 | |
50a9667c | 1191 | delimiter = ", "; |
7e94cfcc NK |
1192 | str += strlen(str) + 1; |
1193 | pmu_num--; | |
50a9667c RR |
1194 | } |
1195 | ||
1196 | fprintf(fp, "\n"); | |
1197 | ||
1198 | if (!pmu_num) | |
1199 | return; | |
1200 | error: | |
1201 | fprintf(fp, "# pmu mappings: unable to read\n"); | |
1202 | } | |
1203 | ||
a8bb559b NK |
1204 | static void print_group_desc(struct perf_header *ph, int fd __maybe_unused, |
1205 | FILE *fp) | |
1206 | { | |
1207 | struct perf_session *session; | |
1208 | struct perf_evsel *evsel; | |
1209 | u32 nr = 0; | |
1210 | ||
1211 | session = container_of(ph, struct perf_session, header); | |
1212 | ||
0050f7aa | 1213 | evlist__for_each(session->evlist, evsel) { |
a8bb559b NK |
1214 | if (perf_evsel__is_group_leader(evsel) && |
1215 | evsel->nr_members > 1) { | |
1216 | fprintf(fp, "# group: %s{%s", evsel->group_name ?: "", | |
1217 | perf_evsel__name(evsel)); | |
1218 | ||
1219 | nr = evsel->nr_members - 1; | |
1220 | } else if (nr) { | |
1221 | fprintf(fp, ",%s", perf_evsel__name(evsel)); | |
1222 | ||
1223 | if (--nr == 0) | |
1224 | fprintf(fp, "}\n"); | |
1225 | } | |
1226 | } | |
1227 | } | |
1228 | ||
08d95bd2 RR |
1229 | static int __event_process_build_id(struct build_id_event *bev, |
1230 | char *filename, | |
1231 | struct perf_session *session) | |
1232 | { | |
1233 | int err = -1; | |
8fa7d87f | 1234 | struct dsos *dsos; |
08d95bd2 RR |
1235 | struct machine *machine; |
1236 | u16 misc; | |
1237 | struct dso *dso; | |
1238 | enum dso_kernel_type dso_type; | |
1239 | ||
1240 | machine = perf_session__findnew_machine(session, bev->pid); | |
1241 | if (!machine) | |
1242 | goto out; | |
1243 | ||
1244 | misc = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
1245 | ||
1246 | switch (misc) { | |
1247 | case PERF_RECORD_MISC_KERNEL: | |
1248 | dso_type = DSO_TYPE_KERNEL; | |
8fa7d87f | 1249 | dsos = &machine->kernel_dsos; |
08d95bd2 RR |
1250 | break; |
1251 | case PERF_RECORD_MISC_GUEST_KERNEL: | |
1252 | dso_type = DSO_TYPE_GUEST_KERNEL; | |
8fa7d87f | 1253 | dsos = &machine->kernel_dsos; |
08d95bd2 RR |
1254 | break; |
1255 | case PERF_RECORD_MISC_USER: | |
1256 | case PERF_RECORD_MISC_GUEST_USER: | |
1257 | dso_type = DSO_TYPE_USER; | |
8fa7d87f | 1258 | dsos = &machine->user_dsos; |
08d95bd2 RR |
1259 | break; |
1260 | default: | |
1261 | goto out; | |
1262 | } | |
1263 | ||
8fa7d87f | 1264 | dso = __dsos__findnew(dsos, filename); |
08d95bd2 RR |
1265 | if (dso != NULL) { |
1266 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; | |
1267 | ||
1268 | dso__set_build_id(dso, &bev->build_id); | |
1269 | ||
e746b3ea | 1270 | if (!is_kernel_module(filename)) |
08d95bd2 RR |
1271 | dso->kernel = dso_type; |
1272 | ||
1273 | build_id__sprintf(dso->build_id, sizeof(dso->build_id), | |
1274 | sbuild_id); | |
1275 | pr_debug("build id event received for %s: %s\n", | |
1276 | dso->long_name, sbuild_id); | |
1277 | } | |
1278 | ||
1279 | err = 0; | |
1280 | out: | |
1281 | return err; | |
1282 | } | |
1283 | ||
1284 | static int perf_header__read_build_ids_abi_quirk(struct perf_header *header, | |
1285 | int input, u64 offset, u64 size) | |
1286 | { | |
1287 | struct perf_session *session = container_of(header, struct perf_session, header); | |
1288 | struct { | |
1289 | struct perf_event_header header; | |
9ac3e487 | 1290 | u8 build_id[PERF_ALIGN(BUILD_ID_SIZE, sizeof(u64))]; |
08d95bd2 RR |
1291 | char filename[0]; |
1292 | } old_bev; | |
1293 | struct build_id_event bev; | |
1294 | char filename[PATH_MAX]; | |
1295 | u64 limit = offset + size; | |
1296 | ||
1297 | while (offset < limit) { | |
1298 | ssize_t len; | |
1299 | ||
5323f60c | 1300 | if (readn(input, &old_bev, sizeof(old_bev)) != sizeof(old_bev)) |
08d95bd2 RR |
1301 | return -1; |
1302 | ||
1303 | if (header->needs_swap) | |
1304 | perf_event_header__bswap(&old_bev.header); | |
1305 | ||
1306 | len = old_bev.header.size - sizeof(old_bev); | |
5323f60c | 1307 | if (readn(input, filename, len) != len) |
08d95bd2 RR |
1308 | return -1; |
1309 | ||
1310 | bev.header = old_bev.header; | |
1311 | ||
1312 | /* | |
1313 | * As the pid is the missing value, we need to fill | |
1314 | * it properly. The header.misc value give us nice hint. | |
1315 | */ | |
1316 | bev.pid = HOST_KERNEL_ID; | |
1317 | if (bev.header.misc == PERF_RECORD_MISC_GUEST_USER || | |
1318 | bev.header.misc == PERF_RECORD_MISC_GUEST_KERNEL) | |
1319 | bev.pid = DEFAULT_GUEST_KERNEL_ID; | |
1320 | ||
1321 | memcpy(bev.build_id, old_bev.build_id, sizeof(bev.build_id)); | |
1322 | __event_process_build_id(&bev, filename, session); | |
1323 | ||
1324 | offset += bev.header.size; | |
1325 | } | |
1326 | ||
1327 | return 0; | |
1328 | } | |
1329 | ||
1330 | static int perf_header__read_build_ids(struct perf_header *header, | |
1331 | int input, u64 offset, u64 size) | |
1332 | { | |
1333 | struct perf_session *session = container_of(header, struct perf_session, header); | |
1334 | struct build_id_event bev; | |
1335 | char filename[PATH_MAX]; | |
1336 | u64 limit = offset + size, orig_offset = offset; | |
1337 | int err = -1; | |
1338 | ||
1339 | while (offset < limit) { | |
1340 | ssize_t len; | |
1341 | ||
5323f60c | 1342 | if (readn(input, &bev, sizeof(bev)) != sizeof(bev)) |
08d95bd2 RR |
1343 | goto out; |
1344 | ||
1345 | if (header->needs_swap) | |
1346 | perf_event_header__bswap(&bev.header); | |
1347 | ||
1348 | len = bev.header.size - sizeof(bev); | |
5323f60c | 1349 | if (readn(input, filename, len) != len) |
08d95bd2 RR |
1350 | goto out; |
1351 | /* | |
1352 | * The a1645ce1 changeset: | |
1353 | * | |
1354 | * "perf: 'perf kvm' tool for monitoring guest performance from host" | |
1355 | * | |
1356 | * Added a field to struct build_id_event that broke the file | |
1357 | * format. | |
1358 | * | |
1359 | * Since the kernel build-id is the first entry, process the | |
1360 | * table using the old format if the well known | |
1361 | * '[kernel.kallsyms]' string for the kernel build-id has the | |
1362 | * first 4 characters chopped off (where the pid_t sits). | |
1363 | */ | |
1364 | if (memcmp(filename, "nel.kallsyms]", 13) == 0) { | |
1365 | if (lseek(input, orig_offset, SEEK_SET) == (off_t)-1) | |
1366 | return -1; | |
1367 | return perf_header__read_build_ids_abi_quirk(header, input, offset, size); | |
1368 | } | |
1369 | ||
1370 | __event_process_build_id(&bev, filename, session); | |
1371 | ||
1372 | offset += bev.header.size; | |
1373 | } | |
1374 | err = 0; | |
1375 | out: | |
1376 | return err; | |
1377 | } | |
1378 | ||
3d7eb86b NK |
1379 | static int process_tracing_data(struct perf_file_section *section __maybe_unused, |
1380 | struct perf_header *ph __maybe_unused, | |
1381 | int fd, void *data) | |
f1c67db7 | 1382 | { |
3dce2ce3 NK |
1383 | ssize_t ret = trace_report(fd, data, false); |
1384 | return ret < 0 ? -1 : 0; | |
f1c67db7 RR |
1385 | } |
1386 | ||
1387 | static int process_build_id(struct perf_file_section *section, | |
3d7eb86b | 1388 | struct perf_header *ph, int fd, |
1d037ca1 | 1389 | void *data __maybe_unused) |
f1c67db7 RR |
1390 | { |
1391 | if (perf_header__read_build_ids(ph, fd, section->offset, section->size)) | |
1392 | pr_debug("Failed to read buildids, continuing...\n"); | |
1393 | return 0; | |
1394 | } | |
1395 | ||
a1ae5655 | 1396 | static int process_hostname(struct perf_file_section *section __maybe_unused, |
3d7eb86b NK |
1397 | struct perf_header *ph, int fd, |
1398 | void *data __maybe_unused) | |
a1ae5655 NK |
1399 | { |
1400 | ph->env.hostname = do_read_string(fd, ph); | |
1401 | return ph->env.hostname ? 0 : -ENOMEM; | |
1402 | } | |
1403 | ||
1404 | static int process_osrelease(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1405 | struct perf_header *ph, int fd, |
1406 | void *data __maybe_unused) | |
a1ae5655 NK |
1407 | { |
1408 | ph->env.os_release = do_read_string(fd, ph); | |
1409 | return ph->env.os_release ? 0 : -ENOMEM; | |
1410 | } | |
1411 | ||
1412 | static int process_version(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1413 | struct perf_header *ph, int fd, |
1414 | void *data __maybe_unused) | |
a1ae5655 NK |
1415 | { |
1416 | ph->env.version = do_read_string(fd, ph); | |
1417 | return ph->env.version ? 0 : -ENOMEM; | |
1418 | } | |
1419 | ||
1420 | static int process_arch(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1421 | struct perf_header *ph, int fd, |
1422 | void *data __maybe_unused) | |
a1ae5655 NK |
1423 | { |
1424 | ph->env.arch = do_read_string(fd, ph); | |
1425 | return ph->env.arch ? 0 : -ENOMEM; | |
1426 | } | |
1427 | ||
1428 | static int process_nrcpus(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1429 | struct perf_header *ph, int fd, |
1430 | void *data __maybe_unused) | |
a1ae5655 | 1431 | { |
727ebd54 | 1432 | ssize_t ret; |
a1ae5655 NK |
1433 | u32 nr; |
1434 | ||
5323f60c | 1435 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1436 | if (ret != sizeof(nr)) |
1437 | return -1; | |
1438 | ||
1439 | if (ph->needs_swap) | |
1440 | nr = bswap_32(nr); | |
1441 | ||
1442 | ph->env.nr_cpus_online = nr; | |
1443 | ||
5323f60c | 1444 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1445 | if (ret != sizeof(nr)) |
1446 | return -1; | |
1447 | ||
1448 | if (ph->needs_swap) | |
1449 | nr = bswap_32(nr); | |
1450 | ||
1451 | ph->env.nr_cpus_avail = nr; | |
1452 | return 0; | |
1453 | } | |
1454 | ||
1455 | static int process_cpudesc(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1456 | struct perf_header *ph, int fd, |
1457 | void *data __maybe_unused) | |
a1ae5655 NK |
1458 | { |
1459 | ph->env.cpu_desc = do_read_string(fd, ph); | |
1460 | return ph->env.cpu_desc ? 0 : -ENOMEM; | |
1461 | } | |
1462 | ||
1463 | static int process_cpuid(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1464 | struct perf_header *ph, int fd, |
1465 | void *data __maybe_unused) | |
a1ae5655 NK |
1466 | { |
1467 | ph->env.cpuid = do_read_string(fd, ph); | |
1468 | return ph->env.cpuid ? 0 : -ENOMEM; | |
1469 | } | |
1470 | ||
1471 | static int process_total_mem(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1472 | struct perf_header *ph, int fd, |
1473 | void *data __maybe_unused) | |
a1ae5655 NK |
1474 | { |
1475 | uint64_t mem; | |
727ebd54 | 1476 | ssize_t ret; |
a1ae5655 | 1477 | |
5323f60c | 1478 | ret = readn(fd, &mem, sizeof(mem)); |
a1ae5655 NK |
1479 | if (ret != sizeof(mem)) |
1480 | return -1; | |
1481 | ||
1482 | if (ph->needs_swap) | |
1483 | mem = bswap_64(mem); | |
1484 | ||
1485 | ph->env.total_mem = mem; | |
1486 | return 0; | |
1487 | } | |
1488 | ||
7c2f7afd RR |
1489 | static struct perf_evsel * |
1490 | perf_evlist__find_by_index(struct perf_evlist *evlist, int idx) | |
1491 | { | |
1492 | struct perf_evsel *evsel; | |
1493 | ||
0050f7aa | 1494 | evlist__for_each(evlist, evsel) { |
7c2f7afd RR |
1495 | if (evsel->idx == idx) |
1496 | return evsel; | |
1497 | } | |
1498 | ||
1499 | return NULL; | |
1500 | } | |
1501 | ||
1502 | static void | |
3d7eb86b NK |
1503 | perf_evlist__set_event_name(struct perf_evlist *evlist, |
1504 | struct perf_evsel *event) | |
7c2f7afd RR |
1505 | { |
1506 | struct perf_evsel *evsel; | |
1507 | ||
1508 | if (!event->name) | |
1509 | return; | |
1510 | ||
1511 | evsel = perf_evlist__find_by_index(evlist, event->idx); | |
1512 | if (!evsel) | |
1513 | return; | |
1514 | ||
1515 | if (evsel->name) | |
1516 | return; | |
1517 | ||
1518 | evsel->name = strdup(event->name); | |
1519 | } | |
1520 | ||
1521 | static int | |
1d037ca1 | 1522 | process_event_desc(struct perf_file_section *section __maybe_unused, |
3d7eb86b | 1523 | struct perf_header *header, int fd, |
1d037ca1 | 1524 | void *data __maybe_unused) |
7c2f7afd | 1525 | { |
3d7eb86b | 1526 | struct perf_session *session; |
7c2f7afd RR |
1527 | struct perf_evsel *evsel, *events = read_event_desc(header, fd); |
1528 | ||
1529 | if (!events) | |
1530 | return 0; | |
1531 | ||
3d7eb86b | 1532 | session = container_of(header, struct perf_session, header); |
7c2f7afd RR |
1533 | for (evsel = events; evsel->attr.size; evsel++) |
1534 | perf_evlist__set_event_name(session->evlist, evsel); | |
1535 | ||
1536 | free_event_desc(events); | |
1537 | ||
1538 | return 0; | |
1539 | } | |
1540 | ||
a1ae5655 | 1541 | static int process_cmdline(struct perf_file_section *section __maybe_unused, |
3d7eb86b NK |
1542 | struct perf_header *ph, int fd, |
1543 | void *data __maybe_unused) | |
a1ae5655 | 1544 | { |
727ebd54 | 1545 | ssize_t ret; |
a1ae5655 NK |
1546 | char *str; |
1547 | u32 nr, i; | |
1548 | struct strbuf sb; | |
1549 | ||
5323f60c | 1550 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1551 | if (ret != sizeof(nr)) |
1552 | return -1; | |
1553 | ||
1554 | if (ph->needs_swap) | |
1555 | nr = bswap_32(nr); | |
1556 | ||
1557 | ph->env.nr_cmdline = nr; | |
1558 | strbuf_init(&sb, 128); | |
1559 | ||
1560 | for (i = 0; i < nr; i++) { | |
1561 | str = do_read_string(fd, ph); | |
1562 | if (!str) | |
1563 | goto error; | |
1564 | ||
1565 | /* include a NULL character at the end */ | |
1566 | strbuf_add(&sb, str, strlen(str) + 1); | |
1567 | free(str); | |
1568 | } | |
1569 | ph->env.cmdline = strbuf_detach(&sb, NULL); | |
1570 | return 0; | |
1571 | ||
1572 | error: | |
1573 | strbuf_release(&sb); | |
1574 | return -1; | |
1575 | } | |
1576 | ||
1577 | static int process_cpu_topology(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1578 | struct perf_header *ph, int fd, |
1579 | void *data __maybe_unused) | |
a1ae5655 | 1580 | { |
727ebd54 | 1581 | ssize_t ret; |
a1ae5655 NK |
1582 | u32 nr, i; |
1583 | char *str; | |
1584 | struct strbuf sb; | |
1585 | ||
5323f60c | 1586 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1587 | if (ret != sizeof(nr)) |
1588 | return -1; | |
1589 | ||
1590 | if (ph->needs_swap) | |
1591 | nr = bswap_32(nr); | |
1592 | ||
1593 | ph->env.nr_sibling_cores = nr; | |
1594 | strbuf_init(&sb, 128); | |
1595 | ||
1596 | for (i = 0; i < nr; i++) { | |
1597 | str = do_read_string(fd, ph); | |
1598 | if (!str) | |
1599 | goto error; | |
1600 | ||
1601 | /* include a NULL character at the end */ | |
1602 | strbuf_add(&sb, str, strlen(str) + 1); | |
1603 | free(str); | |
1604 | } | |
1605 | ph->env.sibling_cores = strbuf_detach(&sb, NULL); | |
1606 | ||
5323f60c | 1607 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1608 | if (ret != sizeof(nr)) |
1609 | return -1; | |
1610 | ||
1611 | if (ph->needs_swap) | |
1612 | nr = bswap_32(nr); | |
1613 | ||
1614 | ph->env.nr_sibling_threads = nr; | |
1615 | ||
1616 | for (i = 0; i < nr; i++) { | |
1617 | str = do_read_string(fd, ph); | |
1618 | if (!str) | |
1619 | goto error; | |
1620 | ||
1621 | /* include a NULL character at the end */ | |
1622 | strbuf_add(&sb, str, strlen(str) + 1); | |
1623 | free(str); | |
1624 | } | |
1625 | ph->env.sibling_threads = strbuf_detach(&sb, NULL); | |
1626 | return 0; | |
1627 | ||
1628 | error: | |
1629 | strbuf_release(&sb); | |
1630 | return -1; | |
1631 | } | |
1632 | ||
1633 | static int process_numa_topology(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1634 | struct perf_header *ph, int fd, |
1635 | void *data __maybe_unused) | |
a1ae5655 | 1636 | { |
727ebd54 | 1637 | ssize_t ret; |
a1ae5655 NK |
1638 | u32 nr, node, i; |
1639 | char *str; | |
1640 | uint64_t mem_total, mem_free; | |
1641 | struct strbuf sb; | |
1642 | ||
1643 | /* nr nodes */ | |
5323f60c | 1644 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1645 | if (ret != sizeof(nr)) |
1646 | goto error; | |
1647 | ||
1648 | if (ph->needs_swap) | |
1649 | nr = bswap_32(nr); | |
1650 | ||
1651 | ph->env.nr_numa_nodes = nr; | |
1652 | strbuf_init(&sb, 256); | |
1653 | ||
1654 | for (i = 0; i < nr; i++) { | |
1655 | /* node number */ | |
5323f60c | 1656 | ret = readn(fd, &node, sizeof(node)); |
a1ae5655 NK |
1657 | if (ret != sizeof(node)) |
1658 | goto error; | |
1659 | ||
5323f60c | 1660 | ret = readn(fd, &mem_total, sizeof(u64)); |
a1ae5655 NK |
1661 | if (ret != sizeof(u64)) |
1662 | goto error; | |
1663 | ||
5323f60c | 1664 | ret = readn(fd, &mem_free, sizeof(u64)); |
a1ae5655 NK |
1665 | if (ret != sizeof(u64)) |
1666 | goto error; | |
1667 | ||
1668 | if (ph->needs_swap) { | |
1669 | node = bswap_32(node); | |
1670 | mem_total = bswap_64(mem_total); | |
1671 | mem_free = bswap_64(mem_free); | |
1672 | } | |
1673 | ||
1674 | strbuf_addf(&sb, "%u:%"PRIu64":%"PRIu64":", | |
1675 | node, mem_total, mem_free); | |
1676 | ||
1677 | str = do_read_string(fd, ph); | |
1678 | if (!str) | |
1679 | goto error; | |
1680 | ||
1681 | /* include a NULL character at the end */ | |
1682 | strbuf_add(&sb, str, strlen(str) + 1); | |
1683 | free(str); | |
1684 | } | |
1685 | ph->env.numa_nodes = strbuf_detach(&sb, NULL); | |
1686 | return 0; | |
1687 | ||
1688 | error: | |
1689 | strbuf_release(&sb); | |
1690 | return -1; | |
1691 | } | |
1692 | ||
1693 | static int process_pmu_mappings(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1694 | struct perf_header *ph, int fd, |
1695 | void *data __maybe_unused) | |
a1ae5655 | 1696 | { |
727ebd54 | 1697 | ssize_t ret; |
a1ae5655 NK |
1698 | char *name; |
1699 | u32 pmu_num; | |
1700 | u32 type; | |
1701 | struct strbuf sb; | |
1702 | ||
5323f60c | 1703 | ret = readn(fd, &pmu_num, sizeof(pmu_num)); |
a1ae5655 NK |
1704 | if (ret != sizeof(pmu_num)) |
1705 | return -1; | |
1706 | ||
1707 | if (ph->needs_swap) | |
1708 | pmu_num = bswap_32(pmu_num); | |
1709 | ||
1710 | if (!pmu_num) { | |
1711 | pr_debug("pmu mappings not available\n"); | |
1712 | return 0; | |
1713 | } | |
1714 | ||
1715 | ph->env.nr_pmu_mappings = pmu_num; | |
1716 | strbuf_init(&sb, 128); | |
1717 | ||
1718 | while (pmu_num) { | |
5323f60c | 1719 | if (readn(fd, &type, sizeof(type)) != sizeof(type)) |
a1ae5655 NK |
1720 | goto error; |
1721 | if (ph->needs_swap) | |
1722 | type = bswap_32(type); | |
1723 | ||
1724 | name = do_read_string(fd, ph); | |
1725 | if (!name) | |
1726 | goto error; | |
1727 | ||
1728 | strbuf_addf(&sb, "%u:%s", type, name); | |
1729 | /* include a NULL character at the end */ | |
1730 | strbuf_add(&sb, "", 1); | |
1731 | ||
1732 | free(name); | |
1733 | pmu_num--; | |
1734 | } | |
1735 | ph->env.pmu_mappings = strbuf_detach(&sb, NULL); | |
1736 | return 0; | |
1737 | ||
1738 | error: | |
1739 | strbuf_release(&sb); | |
1740 | return -1; | |
1741 | } | |
1742 | ||
a8bb559b NK |
1743 | static int process_group_desc(struct perf_file_section *section __maybe_unused, |
1744 | struct perf_header *ph, int fd, | |
1745 | void *data __maybe_unused) | |
1746 | { | |
1747 | size_t ret = -1; | |
1748 | u32 i, nr, nr_groups; | |
1749 | struct perf_session *session; | |
1750 | struct perf_evsel *evsel, *leader = NULL; | |
1751 | struct group_desc { | |
1752 | char *name; | |
1753 | u32 leader_idx; | |
1754 | u32 nr_members; | |
1755 | } *desc; | |
1756 | ||
1757 | if (readn(fd, &nr_groups, sizeof(nr_groups)) != sizeof(nr_groups)) | |
1758 | return -1; | |
1759 | ||
1760 | if (ph->needs_swap) | |
1761 | nr_groups = bswap_32(nr_groups); | |
1762 | ||
1763 | ph->env.nr_groups = nr_groups; | |
1764 | if (!nr_groups) { | |
1765 | pr_debug("group desc not available\n"); | |
1766 | return 0; | |
1767 | } | |
1768 | ||
1769 | desc = calloc(nr_groups, sizeof(*desc)); | |
1770 | if (!desc) | |
1771 | return -1; | |
1772 | ||
1773 | for (i = 0; i < nr_groups; i++) { | |
1774 | desc[i].name = do_read_string(fd, ph); | |
1775 | if (!desc[i].name) | |
1776 | goto out_free; | |
1777 | ||
1778 | if (readn(fd, &desc[i].leader_idx, sizeof(u32)) != sizeof(u32)) | |
1779 | goto out_free; | |
1780 | ||
1781 | if (readn(fd, &desc[i].nr_members, sizeof(u32)) != sizeof(u32)) | |
1782 | goto out_free; | |
1783 | ||
1784 | if (ph->needs_swap) { | |
1785 | desc[i].leader_idx = bswap_32(desc[i].leader_idx); | |
1786 | desc[i].nr_members = bswap_32(desc[i].nr_members); | |
1787 | } | |
1788 | } | |
1789 | ||
1790 | /* | |
1791 | * Rebuild group relationship based on the group_desc | |
1792 | */ | |
1793 | session = container_of(ph, struct perf_session, header); | |
1794 | session->evlist->nr_groups = nr_groups; | |
1795 | ||
1796 | i = nr = 0; | |
0050f7aa | 1797 | evlist__for_each(session->evlist, evsel) { |
a8bb559b NK |
1798 | if (evsel->idx == (int) desc[i].leader_idx) { |
1799 | evsel->leader = evsel; | |
1800 | /* {anon_group} is a dummy name */ | |
210e812f | 1801 | if (strcmp(desc[i].name, "{anon_group}")) { |
a8bb559b | 1802 | evsel->group_name = desc[i].name; |
210e812f NK |
1803 | desc[i].name = NULL; |
1804 | } | |
a8bb559b NK |
1805 | evsel->nr_members = desc[i].nr_members; |
1806 | ||
1807 | if (i >= nr_groups || nr > 0) { | |
1808 | pr_debug("invalid group desc\n"); | |
1809 | goto out_free; | |
1810 | } | |
1811 | ||
1812 | leader = evsel; | |
1813 | nr = evsel->nr_members - 1; | |
1814 | i++; | |
1815 | } else if (nr) { | |
1816 | /* This is a group member */ | |
1817 | evsel->leader = leader; | |
1818 | ||
1819 | nr--; | |
1820 | } | |
1821 | } | |
1822 | ||
1823 | if (i != nr_groups || nr != 0) { | |
1824 | pr_debug("invalid group desc\n"); | |
1825 | goto out_free; | |
1826 | } | |
1827 | ||
1828 | ret = 0; | |
1829 | out_free: | |
50a2740b | 1830 | for (i = 0; i < nr_groups; i++) |
74cf249d | 1831 | zfree(&desc[i].name); |
a8bb559b NK |
1832 | free(desc); |
1833 | ||
1834 | return ret; | |
1835 | } | |
1836 | ||
fbe96f29 SE |
1837 | struct feature_ops { |
1838 | int (*write)(int fd, struct perf_header *h, struct perf_evlist *evlist); | |
1839 | void (*print)(struct perf_header *h, int fd, FILE *fp); | |
f1c67db7 | 1840 | int (*process)(struct perf_file_section *section, |
3d7eb86b | 1841 | struct perf_header *h, int fd, void *data); |
fbe96f29 SE |
1842 | const char *name; |
1843 | bool full_only; | |
1844 | }; | |
1845 | ||
8cdfa78a RR |
1846 | #define FEAT_OPA(n, func) \ |
1847 | [n] = { .name = #n, .write = write_##func, .print = print_##func } | |
f1c67db7 RR |
1848 | #define FEAT_OPP(n, func) \ |
1849 | [n] = { .name = #n, .write = write_##func, .print = print_##func, \ | |
1850 | .process = process_##func } | |
8cdfa78a | 1851 | #define FEAT_OPF(n, func) \ |
f1c67db7 | 1852 | [n] = { .name = #n, .write = write_##func, .print = print_##func, \ |
a1ae5655 | 1853 | .process = process_##func, .full_only = true } |
8cdfa78a RR |
1854 | |
1855 | /* feature_ops not implemented: */ | |
2eeaaa09 SE |
1856 | #define print_tracing_data NULL |
1857 | #define print_build_id NULL | |
fbe96f29 SE |
1858 | |
1859 | static const struct feature_ops feat_ops[HEADER_LAST_FEATURE] = { | |
2eeaaa09 | 1860 | FEAT_OPP(HEADER_TRACING_DATA, tracing_data), |
f1c67db7 | 1861 | FEAT_OPP(HEADER_BUILD_ID, build_id), |
a1ae5655 NK |
1862 | FEAT_OPP(HEADER_HOSTNAME, hostname), |
1863 | FEAT_OPP(HEADER_OSRELEASE, osrelease), | |
1864 | FEAT_OPP(HEADER_VERSION, version), | |
1865 | FEAT_OPP(HEADER_ARCH, arch), | |
1866 | FEAT_OPP(HEADER_NRCPUS, nrcpus), | |
1867 | FEAT_OPP(HEADER_CPUDESC, cpudesc), | |
37e9d750 | 1868 | FEAT_OPP(HEADER_CPUID, cpuid), |
a1ae5655 | 1869 | FEAT_OPP(HEADER_TOTAL_MEM, total_mem), |
7c2f7afd | 1870 | FEAT_OPP(HEADER_EVENT_DESC, event_desc), |
a1ae5655 | 1871 | FEAT_OPP(HEADER_CMDLINE, cmdline), |
8cdfa78a RR |
1872 | FEAT_OPF(HEADER_CPU_TOPOLOGY, cpu_topology), |
1873 | FEAT_OPF(HEADER_NUMA_TOPOLOGY, numa_topology), | |
330aa675 | 1874 | FEAT_OPA(HEADER_BRANCH_STACK, branch_stack), |
a1ae5655 | 1875 | FEAT_OPP(HEADER_PMU_MAPPINGS, pmu_mappings), |
a8bb559b | 1876 | FEAT_OPP(HEADER_GROUP_DESC, group_desc), |
4025ea40 | 1877 | FEAT_OPA(HEADER_AUXTRACE, auxtrace), |
fbe96f29 SE |
1878 | }; |
1879 | ||
1880 | struct header_print_data { | |
1881 | FILE *fp; | |
1882 | bool full; /* extended list of headers */ | |
1883 | }; | |
1884 | ||
1885 | static int perf_file_section__fprintf_info(struct perf_file_section *section, | |
1886 | struct perf_header *ph, | |
1887 | int feat, int fd, void *data) | |
1888 | { | |
1889 | struct header_print_data *hd = data; | |
1890 | ||
1891 | if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) { | |
1892 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " | |
1893 | "%d, continuing...\n", section->offset, feat); | |
1894 | return 0; | |
1895 | } | |
b1e5a9be | 1896 | if (feat >= HEADER_LAST_FEATURE) { |
fbe96f29 | 1897 | pr_warning("unknown feature %d\n", feat); |
f7a8a133 | 1898 | return 0; |
fbe96f29 SE |
1899 | } |
1900 | if (!feat_ops[feat].print) | |
1901 | return 0; | |
1902 | ||
1903 | if (!feat_ops[feat].full_only || hd->full) | |
1904 | feat_ops[feat].print(ph, fd, hd->fp); | |
1905 | else | |
1906 | fprintf(hd->fp, "# %s info available, use -I to display\n", | |
1907 | feat_ops[feat].name); | |
1908 | ||
1909 | return 0; | |
1910 | } | |
1911 | ||
1912 | int perf_header__fprintf_info(struct perf_session *session, FILE *fp, bool full) | |
1913 | { | |
1914 | struct header_print_data hd; | |
1915 | struct perf_header *header = &session->header; | |
cc9784bd | 1916 | int fd = perf_data_file__fd(session->file); |
fbe96f29 SE |
1917 | hd.fp = fp; |
1918 | hd.full = full; | |
1919 | ||
1920 | perf_header__process_sections(header, fd, &hd, | |
1921 | perf_file_section__fprintf_info); | |
1922 | return 0; | |
1923 | } | |
1924 | ||
fbe96f29 SE |
1925 | static int do_write_feat(int fd, struct perf_header *h, int type, |
1926 | struct perf_file_section **p, | |
1927 | struct perf_evlist *evlist) | |
1928 | { | |
1929 | int err; | |
1930 | int ret = 0; | |
1931 | ||
1932 | if (perf_header__has_feat(h, type)) { | |
b1e5a9be RR |
1933 | if (!feat_ops[type].write) |
1934 | return -1; | |
fbe96f29 SE |
1935 | |
1936 | (*p)->offset = lseek(fd, 0, SEEK_CUR); | |
1937 | ||
1938 | err = feat_ops[type].write(fd, h, evlist); | |
1939 | if (err < 0) { | |
1940 | pr_debug("failed to write feature %d\n", type); | |
1941 | ||
1942 | /* undo anything written */ | |
1943 | lseek(fd, (*p)->offset, SEEK_SET); | |
1944 | ||
1945 | return -1; | |
1946 | } | |
1947 | (*p)->size = lseek(fd, 0, SEEK_CUR) - (*p)->offset; | |
1948 | (*p)++; | |
1949 | } | |
1950 | return ret; | |
1951 | } | |
1952 | ||
1c0b04d1 | 1953 | static int perf_header__adds_write(struct perf_header *header, |
361c99a6 | 1954 | struct perf_evlist *evlist, int fd) |
2ba08250 | 1955 | { |
9e827dd0 | 1956 | int nr_sections; |
fbe96f29 | 1957 | struct perf_file_section *feat_sec, *p; |
9e827dd0 FW |
1958 | int sec_size; |
1959 | u64 sec_start; | |
b1e5a9be | 1960 | int feat; |
fbe96f29 | 1961 | int err; |
9e827dd0 | 1962 | |
1c0b04d1 | 1963 | nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS); |
9e827dd0 | 1964 | if (!nr_sections) |
d5eed904 | 1965 | return 0; |
9e827dd0 | 1966 | |
91b98804 | 1967 | feat_sec = p = calloc(nr_sections, sizeof(*feat_sec)); |
d5eed904 ACM |
1968 | if (feat_sec == NULL) |
1969 | return -ENOMEM; | |
9e827dd0 FW |
1970 | |
1971 | sec_size = sizeof(*feat_sec) * nr_sections; | |
1972 | ||
8d541e97 | 1973 | sec_start = header->feat_offset; |
f887f301 | 1974 | lseek(fd, sec_start + sec_size, SEEK_SET); |
2ba08250 | 1975 | |
b1e5a9be RR |
1976 | for_each_set_bit(feat, header->adds_features, HEADER_FEAT_BITS) { |
1977 | if (do_write_feat(fd, header, feat, &p, evlist)) | |
1978 | perf_header__clear_feat(header, feat); | |
1979 | } | |
9e827dd0 | 1980 | |
f887f301 | 1981 | lseek(fd, sec_start, SEEK_SET); |
fbe96f29 SE |
1982 | /* |
1983 | * may write more than needed due to dropped feature, but | |
1984 | * this is okay, reader will skip the mising entries | |
1985 | */ | |
d5eed904 ACM |
1986 | err = do_write(fd, feat_sec, sec_size); |
1987 | if (err < 0) | |
1988 | pr_debug("failed to write feature section\n"); | |
9e827dd0 | 1989 | free(feat_sec); |
d5eed904 | 1990 | return err; |
9e827dd0 | 1991 | } |
2ba08250 | 1992 | |
8dc58101 TZ |
1993 | int perf_header__write_pipe(int fd) |
1994 | { | |
1995 | struct perf_pipe_file_header f_header; | |
1996 | int err; | |
1997 | ||
1998 | f_header = (struct perf_pipe_file_header){ | |
1999 | .magic = PERF_MAGIC, | |
2000 | .size = sizeof(f_header), | |
2001 | }; | |
2002 | ||
2003 | err = do_write(fd, &f_header, sizeof(f_header)); | |
2004 | if (err < 0) { | |
2005 | pr_debug("failed to write perf pipe header\n"); | |
2006 | return err; | |
2007 | } | |
2008 | ||
2009 | return 0; | |
2010 | } | |
2011 | ||
a91e5431 ACM |
2012 | int perf_session__write_header(struct perf_session *session, |
2013 | struct perf_evlist *evlist, | |
2014 | int fd, bool at_exit) | |
7c6a1c65 PZ |
2015 | { |
2016 | struct perf_file_header f_header; | |
2017 | struct perf_file_attr f_attr; | |
1c0b04d1 | 2018 | struct perf_header *header = &session->header; |
563aecb2 | 2019 | struct perf_evsel *evsel; |
944d62ba | 2020 | u64 attr_offset; |
a91e5431 | 2021 | int err; |
7c6a1c65 PZ |
2022 | |
2023 | lseek(fd, sizeof(f_header), SEEK_SET); | |
2024 | ||
0050f7aa | 2025 | evlist__for_each(session->evlist, evsel) { |
6606f873 RR |
2026 | evsel->id_offset = lseek(fd, 0, SEEK_CUR); |
2027 | err = do_write(fd, evsel->id, evsel->ids * sizeof(u64)); | |
d5eed904 ACM |
2028 | if (err < 0) { |
2029 | pr_debug("failed to write perf header\n"); | |
2030 | return err; | |
2031 | } | |
7c6a1c65 PZ |
2032 | } |
2033 | ||
944d62ba | 2034 | attr_offset = lseek(fd, 0, SEEK_CUR); |
7c6a1c65 | 2035 | |
0050f7aa | 2036 | evlist__for_each(evlist, evsel) { |
7c6a1c65 | 2037 | f_attr = (struct perf_file_attr){ |
6606f873 | 2038 | .attr = evsel->attr, |
7c6a1c65 | 2039 | .ids = { |
6606f873 RR |
2040 | .offset = evsel->id_offset, |
2041 | .size = evsel->ids * sizeof(u64), | |
7c6a1c65 PZ |
2042 | } |
2043 | }; | |
d5eed904 ACM |
2044 | err = do_write(fd, &f_attr, sizeof(f_attr)); |
2045 | if (err < 0) { | |
2046 | pr_debug("failed to write perf header attribute\n"); | |
2047 | return err; | |
2048 | } | |
7c6a1c65 PZ |
2049 | } |
2050 | ||
d645c442 AH |
2051 | if (!header->data_offset) |
2052 | header->data_offset = lseek(fd, 0, SEEK_CUR); | |
8d541e97 | 2053 | header->feat_offset = header->data_offset + header->data_size; |
7c6a1c65 | 2054 | |
d5eed904 | 2055 | if (at_exit) { |
1c0b04d1 | 2056 | err = perf_header__adds_write(header, evlist, fd); |
d5eed904 ACM |
2057 | if (err < 0) |
2058 | return err; | |
2059 | } | |
9e827dd0 | 2060 | |
7c6a1c65 PZ |
2061 | f_header = (struct perf_file_header){ |
2062 | .magic = PERF_MAGIC, | |
2063 | .size = sizeof(f_header), | |
2064 | .attr_size = sizeof(f_attr), | |
2065 | .attrs = { | |
944d62ba | 2066 | .offset = attr_offset, |
a91e5431 | 2067 | .size = evlist->nr_entries * sizeof(f_attr), |
7c6a1c65 PZ |
2068 | }, |
2069 | .data = { | |
1c0b04d1 ACM |
2070 | .offset = header->data_offset, |
2071 | .size = header->data_size, | |
7c6a1c65 | 2072 | }, |
44b3c578 | 2073 | /* event_types is ignored, store zeros */ |
7c6a1c65 PZ |
2074 | }; |
2075 | ||
1c0b04d1 | 2076 | memcpy(&f_header.adds_features, &header->adds_features, sizeof(header->adds_features)); |
2ba08250 | 2077 | |
7c6a1c65 | 2078 | lseek(fd, 0, SEEK_SET); |
d5eed904 ACM |
2079 | err = do_write(fd, &f_header, sizeof(f_header)); |
2080 | if (err < 0) { | |
2081 | pr_debug("failed to write perf header\n"); | |
2082 | return err; | |
2083 | } | |
1c0b04d1 | 2084 | lseek(fd, header->data_offset + header->data_size, SEEK_SET); |
7c6a1c65 | 2085 | |
d5eed904 | 2086 | return 0; |
7c6a1c65 PZ |
2087 | } |
2088 | ||
1c0b04d1 | 2089 | static int perf_header__getbuffer64(struct perf_header *header, |
ba21594c ACM |
2090 | int fd, void *buf, size_t size) |
2091 | { | |
1e7972cc | 2092 | if (readn(fd, buf, size) <= 0) |
ba21594c ACM |
2093 | return -1; |
2094 | ||
1c0b04d1 | 2095 | if (header->needs_swap) |
ba21594c ACM |
2096 | mem_bswap_64(buf, size); |
2097 | ||
2098 | return 0; | |
2099 | } | |
2100 | ||
1c0b04d1 | 2101 | int perf_header__process_sections(struct perf_header *header, int fd, |
fbe96f29 | 2102 | void *data, |
1c0b04d1 | 2103 | int (*process)(struct perf_file_section *section, |
b1e5a9be RR |
2104 | struct perf_header *ph, |
2105 | int feat, int fd, void *data)) | |
2ba08250 | 2106 | { |
b1e5a9be | 2107 | struct perf_file_section *feat_sec, *sec; |
9e827dd0 FW |
2108 | int nr_sections; |
2109 | int sec_size; | |
b1e5a9be RR |
2110 | int feat; |
2111 | int err; | |
9e827dd0 | 2112 | |
1c0b04d1 | 2113 | nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS); |
9e827dd0 | 2114 | if (!nr_sections) |
37562eac | 2115 | return 0; |
9e827dd0 | 2116 | |
91b98804 | 2117 | feat_sec = sec = calloc(nr_sections, sizeof(*feat_sec)); |
9e827dd0 | 2118 | if (!feat_sec) |
37562eac | 2119 | return -1; |
9e827dd0 FW |
2120 | |
2121 | sec_size = sizeof(*feat_sec) * nr_sections; | |
2122 | ||
8d541e97 | 2123 | lseek(fd, header->feat_offset, SEEK_SET); |
9e827dd0 | 2124 | |
b1e5a9be RR |
2125 | err = perf_header__getbuffer64(header, fd, feat_sec, sec_size); |
2126 | if (err < 0) | |
769885f3 | 2127 | goto out_free; |
9e827dd0 | 2128 | |
b1e5a9be RR |
2129 | for_each_set_bit(feat, header->adds_features, HEADER_LAST_FEATURE) { |
2130 | err = process(sec++, header, feat, fd, data); | |
2131 | if (err < 0) | |
2132 | goto out_free; | |
2ba08250 | 2133 | } |
b1e5a9be | 2134 | err = 0; |
769885f3 | 2135 | out_free: |
37562eac ACM |
2136 | free(feat_sec); |
2137 | return err; | |
769885f3 | 2138 | } |
4778d2e4 | 2139 | |
114382a0 SE |
2140 | static const int attr_file_abi_sizes[] = { |
2141 | [0] = PERF_ATTR_SIZE_VER0, | |
2142 | [1] = PERF_ATTR_SIZE_VER1, | |
239cc478 | 2143 | [2] = PERF_ATTR_SIZE_VER2, |
0f6a3015 | 2144 | [3] = PERF_ATTR_SIZE_VER3, |
6a21c0b5 | 2145 | [4] = PERF_ATTR_SIZE_VER4, |
114382a0 SE |
2146 | 0, |
2147 | }; | |
2148 | ||
2149 | /* | |
2150 | * In the legacy file format, the magic number is not used to encode endianness. | |
2151 | * hdr_sz was used to encode endianness. But given that hdr_sz can vary based | |
2152 | * on ABI revisions, we need to try all combinations for all endianness to | |
2153 | * detect the endianness. | |
2154 | */ | |
2155 | static int try_all_file_abis(uint64_t hdr_sz, struct perf_header *ph) | |
73323f54 | 2156 | { |
114382a0 SE |
2157 | uint64_t ref_size, attr_size; |
2158 | int i; | |
73323f54 | 2159 | |
114382a0 SE |
2160 | for (i = 0 ; attr_file_abi_sizes[i]; i++) { |
2161 | ref_size = attr_file_abi_sizes[i] | |
2162 | + sizeof(struct perf_file_section); | |
2163 | if (hdr_sz != ref_size) { | |
2164 | attr_size = bswap_64(hdr_sz); | |
2165 | if (attr_size != ref_size) | |
2166 | continue; | |
73323f54 | 2167 | |
114382a0 SE |
2168 | ph->needs_swap = true; |
2169 | } | |
2170 | pr_debug("ABI%d perf.data file detected, need_swap=%d\n", | |
2171 | i, | |
2172 | ph->needs_swap); | |
2173 | return 0; | |
2174 | } | |
2175 | /* could not determine endianness */ | |
2176 | return -1; | |
2177 | } | |
73323f54 | 2178 | |
114382a0 SE |
2179 | #define PERF_PIPE_HDR_VER0 16 |
2180 | ||
2181 | static const size_t attr_pipe_abi_sizes[] = { | |
2182 | [0] = PERF_PIPE_HDR_VER0, | |
2183 | 0, | |
2184 | }; | |
2185 | ||
2186 | /* | |
2187 | * In the legacy pipe format, there is an implicit assumption that endiannesss | |
2188 | * between host recording the samples, and host parsing the samples is the | |
2189 | * same. This is not always the case given that the pipe output may always be | |
2190 | * redirected into a file and analyzed on a different machine with possibly a | |
2191 | * different endianness and perf_event ABI revsions in the perf tool itself. | |
2192 | */ | |
2193 | static int try_all_pipe_abis(uint64_t hdr_sz, struct perf_header *ph) | |
2194 | { | |
2195 | u64 attr_size; | |
2196 | int i; | |
2197 | ||
2198 | for (i = 0 ; attr_pipe_abi_sizes[i]; i++) { | |
2199 | if (hdr_sz != attr_pipe_abi_sizes[i]) { | |
2200 | attr_size = bswap_64(hdr_sz); | |
2201 | if (attr_size != hdr_sz) | |
2202 | continue; | |
73323f54 SE |
2203 | |
2204 | ph->needs_swap = true; | |
2205 | } | |
114382a0 | 2206 | pr_debug("Pipe ABI%d perf.data file detected\n", i); |
73323f54 SE |
2207 | return 0; |
2208 | } | |
114382a0 SE |
2209 | return -1; |
2210 | } | |
2211 | ||
e84ba4e2 FT |
2212 | bool is_perf_magic(u64 magic) |
2213 | { | |
2214 | if (!memcmp(&magic, __perf_magic1, sizeof(magic)) | |
2215 | || magic == __perf_magic2 | |
2216 | || magic == __perf_magic2_sw) | |
2217 | return true; | |
2218 | ||
2219 | return false; | |
2220 | } | |
2221 | ||
114382a0 SE |
2222 | static int check_magic_endian(u64 magic, uint64_t hdr_sz, |
2223 | bool is_pipe, struct perf_header *ph) | |
2224 | { | |
2225 | int ret; | |
2226 | ||
2227 | /* check for legacy format */ | |
2228 | ret = memcmp(&magic, __perf_magic1, sizeof(magic)); | |
2229 | if (ret == 0) { | |
2a08c3ec | 2230 | ph->version = PERF_HEADER_VERSION_1; |
114382a0 SE |
2231 | pr_debug("legacy perf.data format\n"); |
2232 | if (is_pipe) | |
2233 | return try_all_pipe_abis(hdr_sz, ph); | |
2234 | ||
2235 | return try_all_file_abis(hdr_sz, ph); | |
2236 | } | |
2237 | /* | |
2238 | * the new magic number serves two purposes: | |
2239 | * - unique number to identify actual perf.data files | |
2240 | * - encode endianness of file | |
2241 | */ | |
f7913971 | 2242 | ph->version = PERF_HEADER_VERSION_2; |
73323f54 | 2243 | |
114382a0 SE |
2244 | /* check magic number with one endianness */ |
2245 | if (magic == __perf_magic2) | |
73323f54 SE |
2246 | return 0; |
2247 | ||
114382a0 SE |
2248 | /* check magic number with opposite endianness */ |
2249 | if (magic != __perf_magic2_sw) | |
73323f54 SE |
2250 | return -1; |
2251 | ||
2252 | ph->needs_swap = true; | |
2253 | ||
2254 | return 0; | |
2255 | } | |
2256 | ||
1c0b04d1 | 2257 | int perf_file_header__read(struct perf_file_header *header, |
37562eac ACM |
2258 | struct perf_header *ph, int fd) |
2259 | { | |
727ebd54 | 2260 | ssize_t ret; |
73323f54 | 2261 | |
37562eac | 2262 | lseek(fd, 0, SEEK_SET); |
37562eac | 2263 | |
73323f54 SE |
2264 | ret = readn(fd, header, sizeof(*header)); |
2265 | if (ret <= 0) | |
37562eac ACM |
2266 | return -1; |
2267 | ||
114382a0 SE |
2268 | if (check_magic_endian(header->magic, |
2269 | header->attr_size, false, ph) < 0) { | |
2270 | pr_debug("magic/endian check failed\n"); | |
73323f54 | 2271 | return -1; |
114382a0 | 2272 | } |
ba21594c | 2273 | |
73323f54 | 2274 | if (ph->needs_swap) { |
1c0b04d1 | 2275 | mem_bswap_64(header, offsetof(struct perf_file_header, |
73323f54 | 2276 | adds_features)); |
ba21594c ACM |
2277 | } |
2278 | ||
1c0b04d1 | 2279 | if (header->size != sizeof(*header)) { |
37562eac | 2280 | /* Support the previous format */ |
1c0b04d1 ACM |
2281 | if (header->size == offsetof(typeof(*header), adds_features)) |
2282 | bitmap_zero(header->adds_features, HEADER_FEAT_BITS); | |
37562eac ACM |
2283 | else |
2284 | return -1; | |
d327fa43 | 2285 | } else if (ph->needs_swap) { |
d327fa43 DA |
2286 | /* |
2287 | * feature bitmap is declared as an array of unsigned longs -- | |
2288 | * not good since its size can differ between the host that | |
2289 | * generated the data file and the host analyzing the file. | |
2290 | * | |
2291 | * We need to handle endianness, but we don't know the size of | |
2292 | * the unsigned long where the file was generated. Take a best | |
2293 | * guess at determining it: try 64-bit swap first (ie., file | |
2294 | * created on a 64-bit host), and check if the hostname feature | |
2295 | * bit is set (this feature bit is forced on as of fbe96f2). | |
2296 | * If the bit is not, undo the 64-bit swap and try a 32-bit | |
2297 | * swap. If the hostname bit is still not set (e.g., older data | |
2298 | * file), punt and fallback to the original behavior -- | |
2299 | * clearing all feature bits and setting buildid. | |
2300 | */ | |
80c0120a DA |
2301 | mem_bswap_64(&header->adds_features, |
2302 | BITS_TO_U64(HEADER_FEAT_BITS)); | |
d327fa43 DA |
2303 | |
2304 | if (!test_bit(HEADER_HOSTNAME, header->adds_features)) { | |
80c0120a DA |
2305 | /* unswap as u64 */ |
2306 | mem_bswap_64(&header->adds_features, | |
2307 | BITS_TO_U64(HEADER_FEAT_BITS)); | |
2308 | ||
2309 | /* unswap as u32 */ | |
2310 | mem_bswap_32(&header->adds_features, | |
2311 | BITS_TO_U32(HEADER_FEAT_BITS)); | |
d327fa43 DA |
2312 | } |
2313 | ||
2314 | if (!test_bit(HEADER_HOSTNAME, header->adds_features)) { | |
2315 | bitmap_zero(header->adds_features, HEADER_FEAT_BITS); | |
2316 | set_bit(HEADER_BUILD_ID, header->adds_features); | |
2317 | } | |
4778d2e4 | 2318 | } |
9e827dd0 | 2319 | |
1c0b04d1 | 2320 | memcpy(&ph->adds_features, &header->adds_features, |
ba21594c | 2321 | sizeof(ph->adds_features)); |
37562eac | 2322 | |
1c0b04d1 ACM |
2323 | ph->data_offset = header->data.offset; |
2324 | ph->data_size = header->data.size; | |
8d541e97 | 2325 | ph->feat_offset = header->data.offset + header->data.size; |
37562eac ACM |
2326 | return 0; |
2327 | } | |
2328 | ||
1c0b04d1 | 2329 | static int perf_file_section__process(struct perf_file_section *section, |
ba21594c | 2330 | struct perf_header *ph, |
da378962 | 2331 | int feat, int fd, void *data) |
37562eac | 2332 | { |
1c0b04d1 | 2333 | if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) { |
9486aa38 | 2334 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " |
1c0b04d1 | 2335 | "%d, continuing...\n", section->offset, feat); |
37562eac ACM |
2336 | return 0; |
2337 | } | |
2338 | ||
b1e5a9be RR |
2339 | if (feat >= HEADER_LAST_FEATURE) { |
2340 | pr_debug("unknown feature %d, continuing...\n", feat); | |
2341 | return 0; | |
2342 | } | |
2343 | ||
f1c67db7 RR |
2344 | if (!feat_ops[feat].process) |
2345 | return 0; | |
37562eac | 2346 | |
3d7eb86b | 2347 | return feat_ops[feat].process(section, ph, fd, data); |
37562eac | 2348 | } |
2ba08250 | 2349 | |
1c0b04d1 | 2350 | static int perf_file_header__read_pipe(struct perf_pipe_file_header *header, |
454c407e TZ |
2351 | struct perf_header *ph, int fd, |
2352 | bool repipe) | |
7c6a1c65 | 2353 | { |
727ebd54 | 2354 | ssize_t ret; |
73323f54 SE |
2355 | |
2356 | ret = readn(fd, header, sizeof(*header)); | |
2357 | if (ret <= 0) | |
2358 | return -1; | |
2359 | ||
114382a0 SE |
2360 | if (check_magic_endian(header->magic, header->size, true, ph) < 0) { |
2361 | pr_debug("endian/magic failed\n"); | |
8dc58101 | 2362 | return -1; |
114382a0 SE |
2363 | } |
2364 | ||
2365 | if (ph->needs_swap) | |
2366 | header->size = bswap_64(header->size); | |
8dc58101 | 2367 | |
1c0b04d1 | 2368 | if (repipe && do_write(STDOUT_FILENO, header, sizeof(*header)) < 0) |
454c407e TZ |
2369 | return -1; |
2370 | ||
8dc58101 TZ |
2371 | return 0; |
2372 | } | |
2373 | ||
d4339569 | 2374 | static int perf_header__read_pipe(struct perf_session *session) |
8dc58101 | 2375 | { |
1c0b04d1 | 2376 | struct perf_header *header = &session->header; |
8dc58101 TZ |
2377 | struct perf_pipe_file_header f_header; |
2378 | ||
cc9784bd JO |
2379 | if (perf_file_header__read_pipe(&f_header, header, |
2380 | perf_data_file__fd(session->file), | |
454c407e | 2381 | session->repipe) < 0) { |
8dc58101 TZ |
2382 | pr_debug("incompatible file format\n"); |
2383 | return -EINVAL; | |
2384 | } | |
2385 | ||
8dc58101 TZ |
2386 | return 0; |
2387 | } | |
2388 | ||
69996df4 SE |
2389 | static int read_attr(int fd, struct perf_header *ph, |
2390 | struct perf_file_attr *f_attr) | |
2391 | { | |
2392 | struct perf_event_attr *attr = &f_attr->attr; | |
2393 | size_t sz, left; | |
2394 | size_t our_sz = sizeof(f_attr->attr); | |
727ebd54 | 2395 | ssize_t ret; |
69996df4 SE |
2396 | |
2397 | memset(f_attr, 0, sizeof(*f_attr)); | |
2398 | ||
2399 | /* read minimal guaranteed structure */ | |
2400 | ret = readn(fd, attr, PERF_ATTR_SIZE_VER0); | |
2401 | if (ret <= 0) { | |
2402 | pr_debug("cannot read %d bytes of header attr\n", | |
2403 | PERF_ATTR_SIZE_VER0); | |
2404 | return -1; | |
2405 | } | |
2406 | ||
2407 | /* on file perf_event_attr size */ | |
2408 | sz = attr->size; | |
114382a0 | 2409 | |
69996df4 SE |
2410 | if (ph->needs_swap) |
2411 | sz = bswap_32(sz); | |
2412 | ||
2413 | if (sz == 0) { | |
2414 | /* assume ABI0 */ | |
2415 | sz = PERF_ATTR_SIZE_VER0; | |
2416 | } else if (sz > our_sz) { | |
2417 | pr_debug("file uses a more recent and unsupported ABI" | |
2418 | " (%zu bytes extra)\n", sz - our_sz); | |
2419 | return -1; | |
2420 | } | |
2421 | /* what we have not yet read and that we know about */ | |
2422 | left = sz - PERF_ATTR_SIZE_VER0; | |
2423 | if (left) { | |
2424 | void *ptr = attr; | |
2425 | ptr += PERF_ATTR_SIZE_VER0; | |
2426 | ||
2427 | ret = readn(fd, ptr, left); | |
2428 | } | |
2429 | /* read perf_file_section, ids are read in caller */ | |
2430 | ret = readn(fd, &f_attr->ids, sizeof(f_attr->ids)); | |
2431 | ||
2432 | return ret <= 0 ? -1 : 0; | |
2433 | } | |
2434 | ||
831394bd NK |
2435 | static int perf_evsel__prepare_tracepoint_event(struct perf_evsel *evsel, |
2436 | struct pevent *pevent) | |
cb9dd49e | 2437 | { |
831394bd | 2438 | struct event_format *event; |
cb9dd49e ACM |
2439 | char bf[128]; |
2440 | ||
831394bd NK |
2441 | /* already prepared */ |
2442 | if (evsel->tp_format) | |
2443 | return 0; | |
2444 | ||
3dce2ce3 NK |
2445 | if (pevent == NULL) { |
2446 | pr_debug("broken or missing trace data\n"); | |
2447 | return -1; | |
2448 | } | |
2449 | ||
831394bd | 2450 | event = pevent_find_event(pevent, evsel->attr.config); |
cb9dd49e ACM |
2451 | if (event == NULL) |
2452 | return -1; | |
2453 | ||
831394bd NK |
2454 | if (!evsel->name) { |
2455 | snprintf(bf, sizeof(bf), "%s:%s", event->system, event->name); | |
2456 | evsel->name = strdup(bf); | |
2457 | if (evsel->name == NULL) | |
2458 | return -1; | |
2459 | } | |
cb9dd49e | 2460 | |
fcf65bf1 | 2461 | evsel->tp_format = event; |
cb9dd49e ACM |
2462 | return 0; |
2463 | } | |
2464 | ||
831394bd NK |
2465 | static int perf_evlist__prepare_tracepoint_events(struct perf_evlist *evlist, |
2466 | struct pevent *pevent) | |
cb9dd49e ACM |
2467 | { |
2468 | struct perf_evsel *pos; | |
2469 | ||
0050f7aa | 2470 | evlist__for_each(evlist, pos) { |
831394bd NK |
2471 | if (pos->attr.type == PERF_TYPE_TRACEPOINT && |
2472 | perf_evsel__prepare_tracepoint_event(pos, pevent)) | |
cb9dd49e ACM |
2473 | return -1; |
2474 | } | |
2475 | ||
2476 | return 0; | |
2477 | } | |
2478 | ||
d4339569 | 2479 | int perf_session__read_header(struct perf_session *session) |
8dc58101 | 2480 | { |
cc9784bd | 2481 | struct perf_data_file *file = session->file; |
1c0b04d1 | 2482 | struct perf_header *header = &session->header; |
ba21594c | 2483 | struct perf_file_header f_header; |
7c6a1c65 PZ |
2484 | struct perf_file_attr f_attr; |
2485 | u64 f_id; | |
7c6a1c65 | 2486 | int nr_attrs, nr_ids, i, j; |
cc9784bd | 2487 | int fd = perf_data_file__fd(file); |
7c6a1c65 | 2488 | |
334fe7a3 | 2489 | session->evlist = perf_evlist__new(); |
a91e5431 ACM |
2490 | if (session->evlist == NULL) |
2491 | return -ENOMEM; | |
2492 | ||
cc9784bd | 2493 | if (perf_data_file__is_pipe(file)) |
d4339569 | 2494 | return perf_header__read_pipe(session); |
8dc58101 | 2495 | |
69996df4 | 2496 | if (perf_file_header__read(&f_header, header, fd) < 0) |
4dc0a04b | 2497 | return -EINVAL; |
7c6a1c65 | 2498 | |
b314e5cf NK |
2499 | /* |
2500 | * Sanity check that perf.data was written cleanly; data size is | |
2501 | * initialized to 0 and updated only if the on_exit function is run. | |
2502 | * If data size is still 0 then the file contains only partial | |
2503 | * information. Just warn user and process it as much as it can. | |
2504 | */ | |
2505 | if (f_header.data.size == 0) { | |
2506 | pr_warning("WARNING: The %s file's data size field is 0 which is unexpected.\n" | |
2507 | "Was the 'perf record' command properly terminated?\n", | |
cc9784bd | 2508 | file->path); |
b314e5cf NK |
2509 | } |
2510 | ||
69996df4 | 2511 | nr_attrs = f_header.attrs.size / f_header.attr_size; |
7c6a1c65 PZ |
2512 | lseek(fd, f_header.attrs.offset, SEEK_SET); |
2513 | ||
2514 | for (i = 0; i < nr_attrs; i++) { | |
a91e5431 | 2515 | struct perf_evsel *evsel; |
1c222bce | 2516 | off_t tmp; |
7c6a1c65 | 2517 | |
69996df4 | 2518 | if (read_attr(fd, header, &f_attr) < 0) |
769885f3 | 2519 | goto out_errno; |
ba21594c | 2520 | |
1060ab85 DA |
2521 | if (header->needs_swap) { |
2522 | f_attr.ids.size = bswap_64(f_attr.ids.size); | |
2523 | f_attr.ids.offset = bswap_64(f_attr.ids.offset); | |
eda3913b | 2524 | perf_event__attr_swap(&f_attr.attr); |
1060ab85 | 2525 | } |
eda3913b | 2526 | |
1c222bce | 2527 | tmp = lseek(fd, 0, SEEK_CUR); |
ef503831 | 2528 | evsel = perf_evsel__new(&f_attr.attr); |
7c6a1c65 | 2529 | |
a91e5431 ACM |
2530 | if (evsel == NULL) |
2531 | goto out_delete_evlist; | |
0807d2d8 ACM |
2532 | |
2533 | evsel->needs_swap = header->needs_swap; | |
a91e5431 ACM |
2534 | /* |
2535 | * Do it before so that if perf_evsel__alloc_id fails, this | |
2536 | * entry gets purged too at perf_evlist__delete(). | |
2537 | */ | |
2538 | perf_evlist__add(session->evlist, evsel); | |
7c6a1c65 PZ |
2539 | |
2540 | nr_ids = f_attr.ids.size / sizeof(u64); | |
a91e5431 ACM |
2541 | /* |
2542 | * We don't have the cpu and thread maps on the header, so | |
2543 | * for allocating the perf_sample_id table we fake 1 cpu and | |
2544 | * hattr->ids threads. | |
2545 | */ | |
2546 | if (perf_evsel__alloc_id(evsel, 1, nr_ids)) | |
2547 | goto out_delete_evlist; | |
2548 | ||
7c6a1c65 PZ |
2549 | lseek(fd, f_attr.ids.offset, SEEK_SET); |
2550 | ||
2551 | for (j = 0; j < nr_ids; j++) { | |
1c0b04d1 | 2552 | if (perf_header__getbuffer64(header, fd, &f_id, sizeof(f_id))) |
769885f3 | 2553 | goto out_errno; |
7c6a1c65 | 2554 | |
a91e5431 | 2555 | perf_evlist__id_add(session->evlist, evsel, 0, j, f_id); |
7c6a1c65 | 2556 | } |
11deb1f9 | 2557 | |
7c6a1c65 PZ |
2558 | lseek(fd, tmp, SEEK_SET); |
2559 | } | |
2560 | ||
d04b35f8 ACM |
2561 | symbol_conf.nr_events = nr_attrs; |
2562 | ||
29f5ffd3 | 2563 | perf_header__process_sections(header, fd, &session->tevent, |
fbe96f29 | 2564 | perf_file_section__process); |
4778d2e4 | 2565 | |
831394bd | 2566 | if (perf_evlist__prepare_tracepoint_events(session->evlist, |
29f5ffd3 | 2567 | session->tevent.pevent)) |
cb9dd49e ACM |
2568 | goto out_delete_evlist; |
2569 | ||
4dc0a04b | 2570 | return 0; |
769885f3 ACM |
2571 | out_errno: |
2572 | return -errno; | |
a91e5431 ACM |
2573 | |
2574 | out_delete_evlist: | |
2575 | perf_evlist__delete(session->evlist); | |
2576 | session->evlist = NULL; | |
2577 | return -ENOMEM; | |
7c6a1c65 | 2578 | } |
0d3a5c88 | 2579 | |
45694aa7 | 2580 | int perf_event__synthesize_attr(struct perf_tool *tool, |
f4d83436 | 2581 | struct perf_event_attr *attr, u32 ids, u64 *id, |
743eb868 | 2582 | perf_event__handler_t process) |
2c46dbb5 | 2583 | { |
8115d60c | 2584 | union perf_event *ev; |
2c46dbb5 TZ |
2585 | size_t size; |
2586 | int err; | |
2587 | ||
2588 | size = sizeof(struct perf_event_attr); | |
9ac3e487 | 2589 | size = PERF_ALIGN(size, sizeof(u64)); |
2c46dbb5 TZ |
2590 | size += sizeof(struct perf_event_header); |
2591 | size += ids * sizeof(u64); | |
2592 | ||
2593 | ev = malloc(size); | |
2594 | ||
ce47dc56 CS |
2595 | if (ev == NULL) |
2596 | return -ENOMEM; | |
2597 | ||
2c46dbb5 TZ |
2598 | ev->attr.attr = *attr; |
2599 | memcpy(ev->attr.id, id, ids * sizeof(u64)); | |
2600 | ||
2601 | ev->attr.header.type = PERF_RECORD_HEADER_ATTR; | |
f4d83436 | 2602 | ev->attr.header.size = (u16)size; |
2c46dbb5 | 2603 | |
f4d83436 RR |
2604 | if (ev->attr.header.size == size) |
2605 | err = process(tool, ev, NULL, NULL); | |
2606 | else | |
2607 | err = -E2BIG; | |
2c46dbb5 TZ |
2608 | |
2609 | free(ev); | |
2610 | ||
2611 | return err; | |
2612 | } | |
2613 | ||
45694aa7 | 2614 | int perf_event__synthesize_attrs(struct perf_tool *tool, |
d20deb64 | 2615 | struct perf_session *session, |
a91e5431 | 2616 | perf_event__handler_t process) |
2c46dbb5 | 2617 | { |
6606f873 | 2618 | struct perf_evsel *evsel; |
a91e5431 | 2619 | int err = 0; |
2c46dbb5 | 2620 | |
0050f7aa | 2621 | evlist__for_each(session->evlist, evsel) { |
6606f873 RR |
2622 | err = perf_event__synthesize_attr(tool, &evsel->attr, evsel->ids, |
2623 | evsel->id, process); | |
2c46dbb5 TZ |
2624 | if (err) { |
2625 | pr_debug("failed to create perf header attribute\n"); | |
2626 | return err; | |
2627 | } | |
2628 | } | |
2629 | ||
2630 | return err; | |
2631 | } | |
2632 | ||
47c3d109 AH |
2633 | int perf_event__process_attr(struct perf_tool *tool __maybe_unused, |
2634 | union perf_event *event, | |
10d0f086 | 2635 | struct perf_evlist **pevlist) |
2c46dbb5 | 2636 | { |
f4d83436 | 2637 | u32 i, ids, n_ids; |
a91e5431 | 2638 | struct perf_evsel *evsel; |
10d0f086 | 2639 | struct perf_evlist *evlist = *pevlist; |
2c46dbb5 | 2640 | |
10d0f086 | 2641 | if (evlist == NULL) { |
334fe7a3 | 2642 | *pevlist = evlist = perf_evlist__new(); |
10d0f086 | 2643 | if (evlist == NULL) |
a91e5431 ACM |
2644 | return -ENOMEM; |
2645 | } | |
2646 | ||
ef503831 | 2647 | evsel = perf_evsel__new(&event->attr.attr); |
a91e5431 | 2648 | if (evsel == NULL) |
2c46dbb5 TZ |
2649 | return -ENOMEM; |
2650 | ||
10d0f086 | 2651 | perf_evlist__add(evlist, evsel); |
a91e5431 | 2652 | |
8115d60c ACM |
2653 | ids = event->header.size; |
2654 | ids -= (void *)&event->attr.id - (void *)event; | |
2c46dbb5 | 2655 | n_ids = ids / sizeof(u64); |
a91e5431 ACM |
2656 | /* |
2657 | * We don't have the cpu and thread maps on the header, so | |
2658 | * for allocating the perf_sample_id table we fake 1 cpu and | |
2659 | * hattr->ids threads. | |
2660 | */ | |
2661 | if (perf_evsel__alloc_id(evsel, 1, n_ids)) | |
2662 | return -ENOMEM; | |
2c46dbb5 TZ |
2663 | |
2664 | for (i = 0; i < n_ids; i++) { | |
10d0f086 | 2665 | perf_evlist__id_add(evlist, evsel, 0, i, event->attr.id[i]); |
2c46dbb5 TZ |
2666 | } |
2667 | ||
7e0d6fc9 AH |
2668 | symbol_conf.nr_events = evlist->nr_entries; |
2669 | ||
2c46dbb5 TZ |
2670 | return 0; |
2671 | } | |
cd19a035 | 2672 | |
45694aa7 | 2673 | int perf_event__synthesize_tracing_data(struct perf_tool *tool, int fd, |
d20deb64 | 2674 | struct perf_evlist *evlist, |
743eb868 | 2675 | perf_event__handler_t process) |
9215545e | 2676 | { |
8115d60c | 2677 | union perf_event ev; |
29208e57 | 2678 | struct tracing_data *tdata; |
9215545e | 2679 | ssize_t size = 0, aligned_size = 0, padding; |
1d037ca1 | 2680 | int err __maybe_unused = 0; |
9215545e | 2681 | |
29208e57 JO |
2682 | /* |
2683 | * We are going to store the size of the data followed | |
2684 | * by the data contents. Since the fd descriptor is a pipe, | |
2685 | * we cannot seek back to store the size of the data once | |
2686 | * we know it. Instead we: | |
2687 | * | |
2688 | * - write the tracing data to the temp file | |
2689 | * - get/write the data size to pipe | |
2690 | * - write the tracing data from the temp file | |
2691 | * to the pipe | |
2692 | */ | |
2693 | tdata = tracing_data_get(&evlist->entries, fd, true); | |
2694 | if (!tdata) | |
2695 | return -1; | |
2696 | ||
9215545e TZ |
2697 | memset(&ev, 0, sizeof(ev)); |
2698 | ||
2699 | ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA; | |
29208e57 | 2700 | size = tdata->size; |
9ac3e487 | 2701 | aligned_size = PERF_ALIGN(size, sizeof(u64)); |
9215545e TZ |
2702 | padding = aligned_size - size; |
2703 | ev.tracing_data.header.size = sizeof(ev.tracing_data); | |
2704 | ev.tracing_data.size = aligned_size; | |
2705 | ||
45694aa7 | 2706 | process(tool, &ev, NULL, NULL); |
9215545e | 2707 | |
29208e57 JO |
2708 | /* |
2709 | * The put function will copy all the tracing data | |
2710 | * stored in temp file to the pipe. | |
2711 | */ | |
2712 | tracing_data_put(tdata); | |
2713 | ||
9215545e TZ |
2714 | write_padded(fd, NULL, 0, padding); |
2715 | ||
2716 | return aligned_size; | |
2717 | } | |
2718 | ||
47c3d109 AH |
2719 | int perf_event__process_tracing_data(struct perf_tool *tool __maybe_unused, |
2720 | union perf_event *event, | |
8115d60c | 2721 | struct perf_session *session) |
9215545e | 2722 | { |
8115d60c | 2723 | ssize_t size_read, padding, size = event->tracing_data.size; |
cc9784bd JO |
2724 | int fd = perf_data_file__fd(session->file); |
2725 | off_t offset = lseek(fd, 0, SEEK_CUR); | |
9215545e TZ |
2726 | char buf[BUFSIZ]; |
2727 | ||
2728 | /* setup for reading amidst mmap */ | |
cc9784bd | 2729 | lseek(fd, offset + sizeof(struct tracing_data_event), |
9215545e TZ |
2730 | SEEK_SET); |
2731 | ||
29f5ffd3 | 2732 | size_read = trace_report(fd, &session->tevent, |
da378962 | 2733 | session->repipe); |
9ac3e487 | 2734 | padding = PERF_ALIGN(size_read, sizeof(u64)) - size_read; |
9215545e | 2735 | |
cc9784bd | 2736 | if (readn(fd, buf, padding) < 0) { |
2caa48a2 ACM |
2737 | pr_err("%s: reading input file", __func__); |
2738 | return -1; | |
2739 | } | |
454c407e TZ |
2740 | if (session->repipe) { |
2741 | int retw = write(STDOUT_FILENO, buf, padding); | |
2caa48a2 ACM |
2742 | if (retw <= 0 || retw != padding) { |
2743 | pr_err("%s: repiping tracing data padding", __func__); | |
2744 | return -1; | |
2745 | } | |
454c407e | 2746 | } |
9215545e | 2747 | |
2caa48a2 ACM |
2748 | if (size_read + padding != size) { |
2749 | pr_err("%s: tracing data size mismatch", __func__); | |
2750 | return -1; | |
2751 | } | |
9215545e | 2752 | |
831394bd | 2753 | perf_evlist__prepare_tracepoint_events(session->evlist, |
29f5ffd3 | 2754 | session->tevent.pevent); |
8b6ee4c5 | 2755 | |
9215545e TZ |
2756 | return size_read + padding; |
2757 | } | |
c7929e47 | 2758 | |
45694aa7 | 2759 | int perf_event__synthesize_build_id(struct perf_tool *tool, |
d20deb64 | 2760 | struct dso *pos, u16 misc, |
8115d60c | 2761 | perf_event__handler_t process, |
743eb868 | 2762 | struct machine *machine) |
c7929e47 | 2763 | { |
8115d60c | 2764 | union perf_event ev; |
c7929e47 TZ |
2765 | size_t len; |
2766 | int err = 0; | |
2767 | ||
2768 | if (!pos->hit) | |
2769 | return err; | |
2770 | ||
2771 | memset(&ev, 0, sizeof(ev)); | |
2772 | ||
2773 | len = pos->long_name_len + 1; | |
9ac3e487 | 2774 | len = PERF_ALIGN(len, NAME_ALIGN); |
c7929e47 TZ |
2775 | memcpy(&ev.build_id.build_id, pos->build_id, sizeof(pos->build_id)); |
2776 | ev.build_id.header.type = PERF_RECORD_HEADER_BUILD_ID; | |
2777 | ev.build_id.header.misc = misc; | |
23346f21 | 2778 | ev.build_id.pid = machine->pid; |
c7929e47 TZ |
2779 | ev.build_id.header.size = sizeof(ev.build_id) + len; |
2780 | memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len); | |
2781 | ||
45694aa7 | 2782 | err = process(tool, &ev, NULL, machine); |
c7929e47 TZ |
2783 | |
2784 | return err; | |
2785 | } | |
2786 | ||
1d037ca1 | 2787 | int perf_event__process_build_id(struct perf_tool *tool __maybe_unused, |
d20deb64 | 2788 | union perf_event *event, |
8115d60c | 2789 | struct perf_session *session) |
c7929e47 | 2790 | { |
8115d60c ACM |
2791 | __event_process_build_id(&event->build_id, |
2792 | event->build_id.filename, | |
a1645ce1 | 2793 | session); |
c7929e47 TZ |
2794 | return 0; |
2795 | } |