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 | ||
7e94cfcc NK |
872 | static void print_hostname(struct perf_header *ph, int fd __maybe_unused, |
873 | FILE *fp) | |
fbe96f29 | 874 | { |
7e94cfcc | 875 | fprintf(fp, "# hostname : %s\n", ph->env.hostname); |
fbe96f29 SE |
876 | } |
877 | ||
7e94cfcc NK |
878 | static void print_osrelease(struct perf_header *ph, int fd __maybe_unused, |
879 | FILE *fp) | |
fbe96f29 | 880 | { |
7e94cfcc | 881 | fprintf(fp, "# os release : %s\n", ph->env.os_release); |
fbe96f29 SE |
882 | } |
883 | ||
7e94cfcc | 884 | static void print_arch(struct perf_header *ph, int fd __maybe_unused, FILE *fp) |
fbe96f29 | 885 | { |
7e94cfcc | 886 | fprintf(fp, "# arch : %s\n", ph->env.arch); |
fbe96f29 SE |
887 | } |
888 | ||
7e94cfcc NK |
889 | static void print_cpudesc(struct perf_header *ph, int fd __maybe_unused, |
890 | FILE *fp) | |
fbe96f29 | 891 | { |
7e94cfcc | 892 | fprintf(fp, "# cpudesc : %s\n", ph->env.cpu_desc); |
fbe96f29 SE |
893 | } |
894 | ||
7e94cfcc NK |
895 | static void print_nrcpus(struct perf_header *ph, int fd __maybe_unused, |
896 | FILE *fp) | |
fbe96f29 | 897 | { |
7e94cfcc NK |
898 | fprintf(fp, "# nrcpus online : %u\n", ph->env.nr_cpus_online); |
899 | fprintf(fp, "# nrcpus avail : %u\n", ph->env.nr_cpus_avail); | |
fbe96f29 SE |
900 | } |
901 | ||
7e94cfcc NK |
902 | static void print_version(struct perf_header *ph, int fd __maybe_unused, |
903 | FILE *fp) | |
fbe96f29 | 904 | { |
7e94cfcc | 905 | fprintf(fp, "# perf version : %s\n", ph->env.version); |
fbe96f29 SE |
906 | } |
907 | ||
7e94cfcc NK |
908 | static void print_cmdline(struct perf_header *ph, int fd __maybe_unused, |
909 | FILE *fp) | |
fbe96f29 | 910 | { |
7e94cfcc | 911 | int nr, i; |
fbe96f29 | 912 | char *str; |
fbe96f29 | 913 | |
7e94cfcc NK |
914 | nr = ph->env.nr_cmdline; |
915 | str = ph->env.cmdline; | |
fbe96f29 SE |
916 | |
917 | fprintf(fp, "# cmdline : "); | |
918 | ||
919 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 920 | fprintf(fp, "%s ", str); |
7e94cfcc | 921 | str += strlen(str) + 1; |
fbe96f29 SE |
922 | } |
923 | fputc('\n', fp); | |
924 | } | |
925 | ||
7e94cfcc NK |
926 | static void print_cpu_topology(struct perf_header *ph, int fd __maybe_unused, |
927 | FILE *fp) | |
fbe96f29 | 928 | { |
7e94cfcc | 929 | int nr, i; |
fbe96f29 SE |
930 | char *str; |
931 | ||
7e94cfcc NK |
932 | nr = ph->env.nr_sibling_cores; |
933 | str = ph->env.sibling_cores; | |
fbe96f29 SE |
934 | |
935 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 936 | fprintf(fp, "# sibling cores : %s\n", str); |
7e94cfcc | 937 | str += strlen(str) + 1; |
fbe96f29 SE |
938 | } |
939 | ||
7e94cfcc NK |
940 | nr = ph->env.nr_sibling_threads; |
941 | str = ph->env.sibling_threads; | |
fbe96f29 SE |
942 | |
943 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 944 | fprintf(fp, "# sibling threads : %s\n", str); |
7e94cfcc | 945 | str += strlen(str) + 1; |
fbe96f29 SE |
946 | } |
947 | } | |
948 | ||
4e1b9c67 | 949 | static void free_event_desc(struct perf_evsel *events) |
fbe96f29 | 950 | { |
4e1b9c67 RR |
951 | struct perf_evsel *evsel; |
952 | ||
953 | if (!events) | |
954 | return; | |
955 | ||
956 | for (evsel = events; evsel->attr.size; evsel++) { | |
74cf249d ACM |
957 | zfree(&evsel->name); |
958 | zfree(&evsel->id); | |
4e1b9c67 RR |
959 | } |
960 | ||
961 | free(events); | |
962 | } | |
963 | ||
964 | static struct perf_evsel * | |
965 | read_event_desc(struct perf_header *ph, int fd) | |
966 | { | |
967 | struct perf_evsel *evsel, *events = NULL; | |
968 | u64 *id; | |
fbe96f29 | 969 | void *buf = NULL; |
62db9068 SE |
970 | u32 nre, sz, nr, i, j; |
971 | ssize_t ret; | |
972 | size_t msz; | |
fbe96f29 SE |
973 | |
974 | /* number of events */ | |
5323f60c | 975 | ret = readn(fd, &nre, sizeof(nre)); |
fbe96f29 SE |
976 | if (ret != (ssize_t)sizeof(nre)) |
977 | goto error; | |
978 | ||
979 | if (ph->needs_swap) | |
980 | nre = bswap_32(nre); | |
981 | ||
5323f60c | 982 | ret = readn(fd, &sz, sizeof(sz)); |
fbe96f29 SE |
983 | if (ret != (ssize_t)sizeof(sz)) |
984 | goto error; | |
985 | ||
986 | if (ph->needs_swap) | |
987 | sz = bswap_32(sz); | |
988 | ||
62db9068 | 989 | /* buffer to hold on file attr struct */ |
fbe96f29 SE |
990 | buf = malloc(sz); |
991 | if (!buf) | |
992 | goto error; | |
993 | ||
4e1b9c67 RR |
994 | /* the last event terminates with evsel->attr.size == 0: */ |
995 | events = calloc(nre + 1, sizeof(*events)); | |
996 | if (!events) | |
997 | goto error; | |
998 | ||
999 | msz = sizeof(evsel->attr); | |
9fafd98f | 1000 | if (sz < msz) |
fbe96f29 SE |
1001 | msz = sz; |
1002 | ||
4e1b9c67 RR |
1003 | for (i = 0, evsel = events; i < nre; evsel++, i++) { |
1004 | evsel->idx = i; | |
fbe96f29 | 1005 | |
62db9068 SE |
1006 | /* |
1007 | * must read entire on-file attr struct to | |
1008 | * sync up with layout. | |
1009 | */ | |
5323f60c | 1010 | ret = readn(fd, buf, sz); |
fbe96f29 SE |
1011 | if (ret != (ssize_t)sz) |
1012 | goto error; | |
1013 | ||
1014 | if (ph->needs_swap) | |
1015 | perf_event__attr_swap(buf); | |
1016 | ||
4e1b9c67 | 1017 | memcpy(&evsel->attr, buf, msz); |
fbe96f29 | 1018 | |
5323f60c | 1019 | ret = readn(fd, &nr, sizeof(nr)); |
fbe96f29 SE |
1020 | if (ret != (ssize_t)sizeof(nr)) |
1021 | goto error; | |
1022 | ||
0807d2d8 | 1023 | if (ph->needs_swap) { |
fbe96f29 | 1024 | nr = bswap_32(nr); |
0807d2d8 ACM |
1025 | evsel->needs_swap = true; |
1026 | } | |
fbe96f29 | 1027 | |
4e1b9c67 RR |
1028 | evsel->name = do_read_string(fd, ph); |
1029 | ||
1030 | if (!nr) | |
1031 | continue; | |
1032 | ||
1033 | id = calloc(nr, sizeof(*id)); | |
1034 | if (!id) | |
1035 | goto error; | |
1036 | evsel->ids = nr; | |
1037 | evsel->id = id; | |
1038 | ||
1039 | for (j = 0 ; j < nr; j++) { | |
5323f60c | 1040 | ret = readn(fd, id, sizeof(*id)); |
4e1b9c67 RR |
1041 | if (ret != (ssize_t)sizeof(*id)) |
1042 | goto error; | |
1043 | if (ph->needs_swap) | |
1044 | *id = bswap_64(*id); | |
1045 | id++; | |
1046 | } | |
1047 | } | |
1048 | out: | |
04662523 | 1049 | free(buf); |
4e1b9c67 RR |
1050 | return events; |
1051 | error: | |
1052 | if (events) | |
1053 | free_event_desc(events); | |
1054 | events = NULL; | |
1055 | goto out; | |
1056 | } | |
1057 | ||
1058 | static void print_event_desc(struct perf_header *ph, int fd, FILE *fp) | |
1059 | { | |
1060 | struct perf_evsel *evsel, *events = read_event_desc(ph, fd); | |
1061 | u32 j; | |
1062 | u64 *id; | |
1063 | ||
1064 | if (!events) { | |
1065 | fprintf(fp, "# event desc: not available or unable to read\n"); | |
1066 | return; | |
1067 | } | |
1068 | ||
1069 | for (evsel = events; evsel->attr.size; evsel++) { | |
1070 | fprintf(fp, "# event : name = %s, ", evsel->name); | |
fbe96f29 SE |
1071 | |
1072 | fprintf(fp, "type = %d, config = 0x%"PRIx64 | |
1073 | ", config1 = 0x%"PRIx64", config2 = 0x%"PRIx64, | |
4e1b9c67 RR |
1074 | evsel->attr.type, |
1075 | (u64)evsel->attr.config, | |
1076 | (u64)evsel->attr.config1, | |
1077 | (u64)evsel->attr.config2); | |
fbe96f29 SE |
1078 | |
1079 | fprintf(fp, ", excl_usr = %d, excl_kern = %d", | |
4e1b9c67 RR |
1080 | evsel->attr.exclude_user, |
1081 | evsel->attr.exclude_kernel); | |
fbe96f29 | 1082 | |
78b961ff | 1083 | fprintf(fp, ", excl_host = %d, excl_guest = %d", |
4e1b9c67 RR |
1084 | evsel->attr.exclude_host, |
1085 | evsel->attr.exclude_guest); | |
78b961ff | 1086 | |
4e1b9c67 | 1087 | fprintf(fp, ", precise_ip = %d", evsel->attr.precise_ip); |
78b961ff | 1088 | |
5c5e854b SE |
1089 | fprintf(fp, ", attr_mmap2 = %d", evsel->attr.mmap2); |
1090 | fprintf(fp, ", attr_mmap = %d", evsel->attr.mmap); | |
1091 | fprintf(fp, ", attr_mmap_data = %d", evsel->attr.mmap_data); | |
4e1b9c67 | 1092 | if (evsel->ids) { |
fbe96f29 | 1093 | fprintf(fp, ", id = {"); |
4e1b9c67 RR |
1094 | for (j = 0, id = evsel->id; j < evsel->ids; j++, id++) { |
1095 | if (j) | |
1096 | fputc(',', fp); | |
1097 | fprintf(fp, " %"PRIu64, *id); | |
1098 | } | |
fbe96f29 | 1099 | fprintf(fp, " }"); |
4e1b9c67 RR |
1100 | } |
1101 | ||
fbe96f29 SE |
1102 | fputc('\n', fp); |
1103 | } | |
4e1b9c67 RR |
1104 | |
1105 | free_event_desc(events); | |
fbe96f29 SE |
1106 | } |
1107 | ||
7e94cfcc | 1108 | static void print_total_mem(struct perf_header *ph, int fd __maybe_unused, |
1d037ca1 | 1109 | FILE *fp) |
fbe96f29 | 1110 | { |
7e94cfcc | 1111 | fprintf(fp, "# total memory : %Lu kB\n", ph->env.total_mem); |
fbe96f29 SE |
1112 | } |
1113 | ||
7e94cfcc | 1114 | static void print_numa_topology(struct perf_header *ph, int fd __maybe_unused, |
1d037ca1 | 1115 | FILE *fp) |
fbe96f29 | 1116 | { |
fbe96f29 | 1117 | u32 nr, c, i; |
7e94cfcc | 1118 | char *str, *tmp; |
fbe96f29 SE |
1119 | uint64_t mem_total, mem_free; |
1120 | ||
1121 | /* nr nodes */ | |
7e94cfcc NK |
1122 | nr = ph->env.nr_numa_nodes; |
1123 | str = ph->env.numa_nodes; | |
fbe96f29 SE |
1124 | |
1125 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 1126 | /* node number */ |
7e94cfcc NK |
1127 | c = strtoul(str, &tmp, 0); |
1128 | if (*tmp != ':') | |
fbe96f29 SE |
1129 | goto error; |
1130 | ||
7e94cfcc NK |
1131 | str = tmp + 1; |
1132 | mem_total = strtoull(str, &tmp, 0); | |
1133 | if (*tmp != ':') | |
fbe96f29 SE |
1134 | goto error; |
1135 | ||
7e94cfcc NK |
1136 | str = tmp + 1; |
1137 | mem_free = strtoull(str, &tmp, 0); | |
1138 | if (*tmp != ':') | |
fbe96f29 SE |
1139 | goto error; |
1140 | ||
fbe96f29 SE |
1141 | fprintf(fp, "# node%u meminfo : total = %"PRIu64" kB," |
1142 | " free = %"PRIu64" kB\n", | |
7e94cfcc | 1143 | c, mem_total, mem_free); |
fbe96f29 | 1144 | |
7e94cfcc | 1145 | str = tmp + 1; |
fbe96f29 | 1146 | fprintf(fp, "# node%u cpu list : %s\n", c, str); |
1234471e NK |
1147 | |
1148 | str += strlen(str) + 1; | |
fbe96f29 SE |
1149 | } |
1150 | return; | |
1151 | error: | |
1152 | fprintf(fp, "# numa topology : not available\n"); | |
1153 | } | |
1154 | ||
7e94cfcc | 1155 | static void print_cpuid(struct perf_header *ph, int fd __maybe_unused, FILE *fp) |
fbe96f29 | 1156 | { |
7e94cfcc | 1157 | fprintf(fp, "# cpuid : %s\n", ph->env.cpuid); |
fbe96f29 SE |
1158 | } |
1159 | ||
1d037ca1 | 1160 | static void print_branch_stack(struct perf_header *ph __maybe_unused, |
7e94cfcc | 1161 | int fd __maybe_unused, FILE *fp) |
330aa675 SE |
1162 | { |
1163 | fprintf(fp, "# contains samples with branch stack\n"); | |
1164 | } | |
1165 | ||
7e94cfcc NK |
1166 | static void print_pmu_mappings(struct perf_header *ph, int fd __maybe_unused, |
1167 | FILE *fp) | |
50a9667c RR |
1168 | { |
1169 | const char *delimiter = "# pmu mappings: "; | |
7e94cfcc | 1170 | char *str, *tmp; |
50a9667c RR |
1171 | u32 pmu_num; |
1172 | u32 type; | |
1173 | ||
7e94cfcc | 1174 | pmu_num = ph->env.nr_pmu_mappings; |
50a9667c RR |
1175 | if (!pmu_num) { |
1176 | fprintf(fp, "# pmu mappings: not available\n"); | |
1177 | return; | |
1178 | } | |
1179 | ||
7e94cfcc NK |
1180 | str = ph->env.pmu_mappings; |
1181 | ||
50a9667c | 1182 | while (pmu_num) { |
7e94cfcc NK |
1183 | type = strtoul(str, &tmp, 0); |
1184 | if (*tmp != ':') | |
1185 | goto error; | |
1186 | ||
1187 | str = tmp + 1; | |
1188 | fprintf(fp, "%s%s = %" PRIu32, delimiter, str, type); | |
be4a2ded | 1189 | |
50a9667c | 1190 | delimiter = ", "; |
7e94cfcc NK |
1191 | str += strlen(str) + 1; |
1192 | pmu_num--; | |
50a9667c RR |
1193 | } |
1194 | ||
1195 | fprintf(fp, "\n"); | |
1196 | ||
1197 | if (!pmu_num) | |
1198 | return; | |
1199 | error: | |
1200 | fprintf(fp, "# pmu mappings: unable to read\n"); | |
1201 | } | |
1202 | ||
a8bb559b NK |
1203 | static void print_group_desc(struct perf_header *ph, int fd __maybe_unused, |
1204 | FILE *fp) | |
1205 | { | |
1206 | struct perf_session *session; | |
1207 | struct perf_evsel *evsel; | |
1208 | u32 nr = 0; | |
1209 | ||
1210 | session = container_of(ph, struct perf_session, header); | |
1211 | ||
0050f7aa | 1212 | evlist__for_each(session->evlist, evsel) { |
a8bb559b NK |
1213 | if (perf_evsel__is_group_leader(evsel) && |
1214 | evsel->nr_members > 1) { | |
1215 | fprintf(fp, "# group: %s{%s", evsel->group_name ?: "", | |
1216 | perf_evsel__name(evsel)); | |
1217 | ||
1218 | nr = evsel->nr_members - 1; | |
1219 | } else if (nr) { | |
1220 | fprintf(fp, ",%s", perf_evsel__name(evsel)); | |
1221 | ||
1222 | if (--nr == 0) | |
1223 | fprintf(fp, "}\n"); | |
1224 | } | |
1225 | } | |
1226 | } | |
1227 | ||
08d95bd2 RR |
1228 | static int __event_process_build_id(struct build_id_event *bev, |
1229 | char *filename, | |
1230 | struct perf_session *session) | |
1231 | { | |
1232 | int err = -1; | |
8fa7d87f | 1233 | struct dsos *dsos; |
08d95bd2 RR |
1234 | struct machine *machine; |
1235 | u16 misc; | |
1236 | struct dso *dso; | |
1237 | enum dso_kernel_type dso_type; | |
1238 | ||
1239 | machine = perf_session__findnew_machine(session, bev->pid); | |
1240 | if (!machine) | |
1241 | goto out; | |
1242 | ||
1243 | misc = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
1244 | ||
1245 | switch (misc) { | |
1246 | case PERF_RECORD_MISC_KERNEL: | |
1247 | dso_type = DSO_TYPE_KERNEL; | |
8fa7d87f | 1248 | dsos = &machine->kernel_dsos; |
08d95bd2 RR |
1249 | break; |
1250 | case PERF_RECORD_MISC_GUEST_KERNEL: | |
1251 | dso_type = DSO_TYPE_GUEST_KERNEL; | |
8fa7d87f | 1252 | dsos = &machine->kernel_dsos; |
08d95bd2 RR |
1253 | break; |
1254 | case PERF_RECORD_MISC_USER: | |
1255 | case PERF_RECORD_MISC_GUEST_USER: | |
1256 | dso_type = DSO_TYPE_USER; | |
8fa7d87f | 1257 | dsos = &machine->user_dsos; |
08d95bd2 RR |
1258 | break; |
1259 | default: | |
1260 | goto out; | |
1261 | } | |
1262 | ||
8fa7d87f | 1263 | dso = __dsos__findnew(dsos, filename); |
08d95bd2 RR |
1264 | if (dso != NULL) { |
1265 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; | |
1266 | ||
1267 | dso__set_build_id(dso, &bev->build_id); | |
1268 | ||
b837a8bd | 1269 | if (!is_kernel_module(filename, NULL)) |
08d95bd2 RR |
1270 | dso->kernel = dso_type; |
1271 | ||
1272 | build_id__sprintf(dso->build_id, sizeof(dso->build_id), | |
1273 | sbuild_id); | |
1274 | pr_debug("build id event received for %s: %s\n", | |
1275 | dso->long_name, sbuild_id); | |
1276 | } | |
1277 | ||
1278 | err = 0; | |
1279 | out: | |
1280 | return err; | |
1281 | } | |
1282 | ||
1283 | static int perf_header__read_build_ids_abi_quirk(struct perf_header *header, | |
1284 | int input, u64 offset, u64 size) | |
1285 | { | |
1286 | struct perf_session *session = container_of(header, struct perf_session, header); | |
1287 | struct { | |
1288 | struct perf_event_header header; | |
9ac3e487 | 1289 | u8 build_id[PERF_ALIGN(BUILD_ID_SIZE, sizeof(u64))]; |
08d95bd2 RR |
1290 | char filename[0]; |
1291 | } old_bev; | |
1292 | struct build_id_event bev; | |
1293 | char filename[PATH_MAX]; | |
1294 | u64 limit = offset + size; | |
1295 | ||
1296 | while (offset < limit) { | |
1297 | ssize_t len; | |
1298 | ||
5323f60c | 1299 | if (readn(input, &old_bev, sizeof(old_bev)) != sizeof(old_bev)) |
08d95bd2 RR |
1300 | return -1; |
1301 | ||
1302 | if (header->needs_swap) | |
1303 | perf_event_header__bswap(&old_bev.header); | |
1304 | ||
1305 | len = old_bev.header.size - sizeof(old_bev); | |
5323f60c | 1306 | if (readn(input, filename, len) != len) |
08d95bd2 RR |
1307 | return -1; |
1308 | ||
1309 | bev.header = old_bev.header; | |
1310 | ||
1311 | /* | |
1312 | * As the pid is the missing value, we need to fill | |
1313 | * it properly. The header.misc value give us nice hint. | |
1314 | */ | |
1315 | bev.pid = HOST_KERNEL_ID; | |
1316 | if (bev.header.misc == PERF_RECORD_MISC_GUEST_USER || | |
1317 | bev.header.misc == PERF_RECORD_MISC_GUEST_KERNEL) | |
1318 | bev.pid = DEFAULT_GUEST_KERNEL_ID; | |
1319 | ||
1320 | memcpy(bev.build_id, old_bev.build_id, sizeof(bev.build_id)); | |
1321 | __event_process_build_id(&bev, filename, session); | |
1322 | ||
1323 | offset += bev.header.size; | |
1324 | } | |
1325 | ||
1326 | return 0; | |
1327 | } | |
1328 | ||
1329 | static int perf_header__read_build_ids(struct perf_header *header, | |
1330 | int input, u64 offset, u64 size) | |
1331 | { | |
1332 | struct perf_session *session = container_of(header, struct perf_session, header); | |
1333 | struct build_id_event bev; | |
1334 | char filename[PATH_MAX]; | |
1335 | u64 limit = offset + size, orig_offset = offset; | |
1336 | int err = -1; | |
1337 | ||
1338 | while (offset < limit) { | |
1339 | ssize_t len; | |
1340 | ||
5323f60c | 1341 | if (readn(input, &bev, sizeof(bev)) != sizeof(bev)) |
08d95bd2 RR |
1342 | goto out; |
1343 | ||
1344 | if (header->needs_swap) | |
1345 | perf_event_header__bswap(&bev.header); | |
1346 | ||
1347 | len = bev.header.size - sizeof(bev); | |
5323f60c | 1348 | if (readn(input, filename, len) != len) |
08d95bd2 RR |
1349 | goto out; |
1350 | /* | |
1351 | * The a1645ce1 changeset: | |
1352 | * | |
1353 | * "perf: 'perf kvm' tool for monitoring guest performance from host" | |
1354 | * | |
1355 | * Added a field to struct build_id_event that broke the file | |
1356 | * format. | |
1357 | * | |
1358 | * Since the kernel build-id is the first entry, process the | |
1359 | * table using the old format if the well known | |
1360 | * '[kernel.kallsyms]' string for the kernel build-id has the | |
1361 | * first 4 characters chopped off (where the pid_t sits). | |
1362 | */ | |
1363 | if (memcmp(filename, "nel.kallsyms]", 13) == 0) { | |
1364 | if (lseek(input, orig_offset, SEEK_SET) == (off_t)-1) | |
1365 | return -1; | |
1366 | return perf_header__read_build_ids_abi_quirk(header, input, offset, size); | |
1367 | } | |
1368 | ||
1369 | __event_process_build_id(&bev, filename, session); | |
1370 | ||
1371 | offset += bev.header.size; | |
1372 | } | |
1373 | err = 0; | |
1374 | out: | |
1375 | return err; | |
1376 | } | |
1377 | ||
3d7eb86b NK |
1378 | static int process_tracing_data(struct perf_file_section *section __maybe_unused, |
1379 | struct perf_header *ph __maybe_unused, | |
1380 | int fd, void *data) | |
f1c67db7 | 1381 | { |
3dce2ce3 NK |
1382 | ssize_t ret = trace_report(fd, data, false); |
1383 | return ret < 0 ? -1 : 0; | |
f1c67db7 RR |
1384 | } |
1385 | ||
1386 | static int process_build_id(struct perf_file_section *section, | |
3d7eb86b | 1387 | struct perf_header *ph, int fd, |
1d037ca1 | 1388 | void *data __maybe_unused) |
f1c67db7 RR |
1389 | { |
1390 | if (perf_header__read_build_ids(ph, fd, section->offset, section->size)) | |
1391 | pr_debug("Failed to read buildids, continuing...\n"); | |
1392 | return 0; | |
1393 | } | |
1394 | ||
a1ae5655 | 1395 | static int process_hostname(struct perf_file_section *section __maybe_unused, |
3d7eb86b NK |
1396 | struct perf_header *ph, int fd, |
1397 | void *data __maybe_unused) | |
a1ae5655 NK |
1398 | { |
1399 | ph->env.hostname = do_read_string(fd, ph); | |
1400 | return ph->env.hostname ? 0 : -ENOMEM; | |
1401 | } | |
1402 | ||
1403 | static int process_osrelease(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1404 | struct perf_header *ph, int fd, |
1405 | void *data __maybe_unused) | |
a1ae5655 NK |
1406 | { |
1407 | ph->env.os_release = do_read_string(fd, ph); | |
1408 | return ph->env.os_release ? 0 : -ENOMEM; | |
1409 | } | |
1410 | ||
1411 | static int process_version(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1412 | struct perf_header *ph, int fd, |
1413 | void *data __maybe_unused) | |
a1ae5655 NK |
1414 | { |
1415 | ph->env.version = do_read_string(fd, ph); | |
1416 | return ph->env.version ? 0 : -ENOMEM; | |
1417 | } | |
1418 | ||
1419 | static int process_arch(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1420 | struct perf_header *ph, int fd, |
1421 | void *data __maybe_unused) | |
a1ae5655 NK |
1422 | { |
1423 | ph->env.arch = do_read_string(fd, ph); | |
1424 | return ph->env.arch ? 0 : -ENOMEM; | |
1425 | } | |
1426 | ||
1427 | static int process_nrcpus(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1428 | struct perf_header *ph, int fd, |
1429 | void *data __maybe_unused) | |
a1ae5655 | 1430 | { |
727ebd54 | 1431 | ssize_t ret; |
a1ae5655 NK |
1432 | u32 nr; |
1433 | ||
5323f60c | 1434 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1435 | if (ret != sizeof(nr)) |
1436 | return -1; | |
1437 | ||
1438 | if (ph->needs_swap) | |
1439 | nr = bswap_32(nr); | |
1440 | ||
1441 | ph->env.nr_cpus_online = nr; | |
1442 | ||
5323f60c | 1443 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1444 | if (ret != sizeof(nr)) |
1445 | return -1; | |
1446 | ||
1447 | if (ph->needs_swap) | |
1448 | nr = bswap_32(nr); | |
1449 | ||
1450 | ph->env.nr_cpus_avail = nr; | |
1451 | return 0; | |
1452 | } | |
1453 | ||
1454 | static int process_cpudesc(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1455 | struct perf_header *ph, int fd, |
1456 | void *data __maybe_unused) | |
a1ae5655 NK |
1457 | { |
1458 | ph->env.cpu_desc = do_read_string(fd, ph); | |
1459 | return ph->env.cpu_desc ? 0 : -ENOMEM; | |
1460 | } | |
1461 | ||
1462 | static int process_cpuid(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1463 | struct perf_header *ph, int fd, |
1464 | void *data __maybe_unused) | |
a1ae5655 NK |
1465 | { |
1466 | ph->env.cpuid = do_read_string(fd, ph); | |
1467 | return ph->env.cpuid ? 0 : -ENOMEM; | |
1468 | } | |
1469 | ||
1470 | static int process_total_mem(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1471 | struct perf_header *ph, int fd, |
1472 | void *data __maybe_unused) | |
a1ae5655 NK |
1473 | { |
1474 | uint64_t mem; | |
727ebd54 | 1475 | ssize_t ret; |
a1ae5655 | 1476 | |
5323f60c | 1477 | ret = readn(fd, &mem, sizeof(mem)); |
a1ae5655 NK |
1478 | if (ret != sizeof(mem)) |
1479 | return -1; | |
1480 | ||
1481 | if (ph->needs_swap) | |
1482 | mem = bswap_64(mem); | |
1483 | ||
1484 | ph->env.total_mem = mem; | |
1485 | return 0; | |
1486 | } | |
1487 | ||
7c2f7afd RR |
1488 | static struct perf_evsel * |
1489 | perf_evlist__find_by_index(struct perf_evlist *evlist, int idx) | |
1490 | { | |
1491 | struct perf_evsel *evsel; | |
1492 | ||
0050f7aa | 1493 | evlist__for_each(evlist, evsel) { |
7c2f7afd RR |
1494 | if (evsel->idx == idx) |
1495 | return evsel; | |
1496 | } | |
1497 | ||
1498 | return NULL; | |
1499 | } | |
1500 | ||
1501 | static void | |
3d7eb86b NK |
1502 | perf_evlist__set_event_name(struct perf_evlist *evlist, |
1503 | struct perf_evsel *event) | |
7c2f7afd RR |
1504 | { |
1505 | struct perf_evsel *evsel; | |
1506 | ||
1507 | if (!event->name) | |
1508 | return; | |
1509 | ||
1510 | evsel = perf_evlist__find_by_index(evlist, event->idx); | |
1511 | if (!evsel) | |
1512 | return; | |
1513 | ||
1514 | if (evsel->name) | |
1515 | return; | |
1516 | ||
1517 | evsel->name = strdup(event->name); | |
1518 | } | |
1519 | ||
1520 | static int | |
1d037ca1 | 1521 | process_event_desc(struct perf_file_section *section __maybe_unused, |
3d7eb86b | 1522 | struct perf_header *header, int fd, |
1d037ca1 | 1523 | void *data __maybe_unused) |
7c2f7afd | 1524 | { |
3d7eb86b | 1525 | struct perf_session *session; |
7c2f7afd RR |
1526 | struct perf_evsel *evsel, *events = read_event_desc(header, fd); |
1527 | ||
1528 | if (!events) | |
1529 | return 0; | |
1530 | ||
3d7eb86b | 1531 | session = container_of(header, struct perf_session, header); |
7c2f7afd RR |
1532 | for (evsel = events; evsel->attr.size; evsel++) |
1533 | perf_evlist__set_event_name(session->evlist, evsel); | |
1534 | ||
1535 | free_event_desc(events); | |
1536 | ||
1537 | return 0; | |
1538 | } | |
1539 | ||
a1ae5655 | 1540 | static int process_cmdline(struct perf_file_section *section __maybe_unused, |
3d7eb86b NK |
1541 | struct perf_header *ph, int fd, |
1542 | void *data __maybe_unused) | |
a1ae5655 | 1543 | { |
727ebd54 | 1544 | ssize_t ret; |
a1ae5655 NK |
1545 | char *str; |
1546 | u32 nr, i; | |
1547 | struct strbuf sb; | |
1548 | ||
5323f60c | 1549 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1550 | if (ret != sizeof(nr)) |
1551 | return -1; | |
1552 | ||
1553 | if (ph->needs_swap) | |
1554 | nr = bswap_32(nr); | |
1555 | ||
1556 | ph->env.nr_cmdline = nr; | |
1557 | strbuf_init(&sb, 128); | |
1558 | ||
1559 | for (i = 0; i < nr; i++) { | |
1560 | str = do_read_string(fd, ph); | |
1561 | if (!str) | |
1562 | goto error; | |
1563 | ||
1564 | /* include a NULL character at the end */ | |
1565 | strbuf_add(&sb, str, strlen(str) + 1); | |
1566 | free(str); | |
1567 | } | |
1568 | ph->env.cmdline = strbuf_detach(&sb, NULL); | |
1569 | return 0; | |
1570 | ||
1571 | error: | |
1572 | strbuf_release(&sb); | |
1573 | return -1; | |
1574 | } | |
1575 | ||
1576 | static int process_cpu_topology(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1577 | struct perf_header *ph, int fd, |
1578 | void *data __maybe_unused) | |
a1ae5655 | 1579 | { |
727ebd54 | 1580 | ssize_t ret; |
a1ae5655 NK |
1581 | u32 nr, i; |
1582 | char *str; | |
1583 | struct strbuf sb; | |
1584 | ||
5323f60c | 1585 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1586 | if (ret != sizeof(nr)) |
1587 | return -1; | |
1588 | ||
1589 | if (ph->needs_swap) | |
1590 | nr = bswap_32(nr); | |
1591 | ||
1592 | ph->env.nr_sibling_cores = nr; | |
1593 | strbuf_init(&sb, 128); | |
1594 | ||
1595 | for (i = 0; i < nr; i++) { | |
1596 | str = do_read_string(fd, ph); | |
1597 | if (!str) | |
1598 | goto error; | |
1599 | ||
1600 | /* include a NULL character at the end */ | |
1601 | strbuf_add(&sb, str, strlen(str) + 1); | |
1602 | free(str); | |
1603 | } | |
1604 | ph->env.sibling_cores = strbuf_detach(&sb, NULL); | |
1605 | ||
5323f60c | 1606 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1607 | if (ret != sizeof(nr)) |
1608 | return -1; | |
1609 | ||
1610 | if (ph->needs_swap) | |
1611 | nr = bswap_32(nr); | |
1612 | ||
1613 | ph->env.nr_sibling_threads = nr; | |
1614 | ||
1615 | for (i = 0; i < nr; i++) { | |
1616 | str = do_read_string(fd, ph); | |
1617 | if (!str) | |
1618 | goto error; | |
1619 | ||
1620 | /* include a NULL character at the end */ | |
1621 | strbuf_add(&sb, str, strlen(str) + 1); | |
1622 | free(str); | |
1623 | } | |
1624 | ph->env.sibling_threads = strbuf_detach(&sb, NULL); | |
1625 | return 0; | |
1626 | ||
1627 | error: | |
1628 | strbuf_release(&sb); | |
1629 | return -1; | |
1630 | } | |
1631 | ||
1632 | static int process_numa_topology(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1633 | struct perf_header *ph, int fd, |
1634 | void *data __maybe_unused) | |
a1ae5655 | 1635 | { |
727ebd54 | 1636 | ssize_t ret; |
a1ae5655 NK |
1637 | u32 nr, node, i; |
1638 | char *str; | |
1639 | uint64_t mem_total, mem_free; | |
1640 | struct strbuf sb; | |
1641 | ||
1642 | /* nr nodes */ | |
5323f60c | 1643 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1644 | if (ret != sizeof(nr)) |
1645 | goto error; | |
1646 | ||
1647 | if (ph->needs_swap) | |
1648 | nr = bswap_32(nr); | |
1649 | ||
1650 | ph->env.nr_numa_nodes = nr; | |
1651 | strbuf_init(&sb, 256); | |
1652 | ||
1653 | for (i = 0; i < nr; i++) { | |
1654 | /* node number */ | |
5323f60c | 1655 | ret = readn(fd, &node, sizeof(node)); |
a1ae5655 NK |
1656 | if (ret != sizeof(node)) |
1657 | goto error; | |
1658 | ||
5323f60c | 1659 | ret = readn(fd, &mem_total, sizeof(u64)); |
a1ae5655 NK |
1660 | if (ret != sizeof(u64)) |
1661 | goto error; | |
1662 | ||
5323f60c | 1663 | ret = readn(fd, &mem_free, sizeof(u64)); |
a1ae5655 NK |
1664 | if (ret != sizeof(u64)) |
1665 | goto error; | |
1666 | ||
1667 | if (ph->needs_swap) { | |
1668 | node = bswap_32(node); | |
1669 | mem_total = bswap_64(mem_total); | |
1670 | mem_free = bswap_64(mem_free); | |
1671 | } | |
1672 | ||
1673 | strbuf_addf(&sb, "%u:%"PRIu64":%"PRIu64":", | |
1674 | node, mem_total, mem_free); | |
1675 | ||
1676 | str = do_read_string(fd, ph); | |
1677 | if (!str) | |
1678 | goto error; | |
1679 | ||
1680 | /* include a NULL character at the end */ | |
1681 | strbuf_add(&sb, str, strlen(str) + 1); | |
1682 | free(str); | |
1683 | } | |
1684 | ph->env.numa_nodes = strbuf_detach(&sb, NULL); | |
1685 | return 0; | |
1686 | ||
1687 | error: | |
1688 | strbuf_release(&sb); | |
1689 | return -1; | |
1690 | } | |
1691 | ||
1692 | static int process_pmu_mappings(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1693 | struct perf_header *ph, int fd, |
1694 | void *data __maybe_unused) | |
a1ae5655 | 1695 | { |
727ebd54 | 1696 | ssize_t ret; |
a1ae5655 NK |
1697 | char *name; |
1698 | u32 pmu_num; | |
1699 | u32 type; | |
1700 | struct strbuf sb; | |
1701 | ||
5323f60c | 1702 | ret = readn(fd, &pmu_num, sizeof(pmu_num)); |
a1ae5655 NK |
1703 | if (ret != sizeof(pmu_num)) |
1704 | return -1; | |
1705 | ||
1706 | if (ph->needs_swap) | |
1707 | pmu_num = bswap_32(pmu_num); | |
1708 | ||
1709 | if (!pmu_num) { | |
1710 | pr_debug("pmu mappings not available\n"); | |
1711 | return 0; | |
1712 | } | |
1713 | ||
1714 | ph->env.nr_pmu_mappings = pmu_num; | |
1715 | strbuf_init(&sb, 128); | |
1716 | ||
1717 | while (pmu_num) { | |
5323f60c | 1718 | if (readn(fd, &type, sizeof(type)) != sizeof(type)) |
a1ae5655 NK |
1719 | goto error; |
1720 | if (ph->needs_swap) | |
1721 | type = bswap_32(type); | |
1722 | ||
1723 | name = do_read_string(fd, ph); | |
1724 | if (!name) | |
1725 | goto error; | |
1726 | ||
1727 | strbuf_addf(&sb, "%u:%s", type, name); | |
1728 | /* include a NULL character at the end */ | |
1729 | strbuf_add(&sb, "", 1); | |
1730 | ||
1731 | free(name); | |
1732 | pmu_num--; | |
1733 | } | |
1734 | ph->env.pmu_mappings = strbuf_detach(&sb, NULL); | |
1735 | return 0; | |
1736 | ||
1737 | error: | |
1738 | strbuf_release(&sb); | |
1739 | return -1; | |
1740 | } | |
1741 | ||
a8bb559b NK |
1742 | static int process_group_desc(struct perf_file_section *section __maybe_unused, |
1743 | struct perf_header *ph, int fd, | |
1744 | void *data __maybe_unused) | |
1745 | { | |
1746 | size_t ret = -1; | |
1747 | u32 i, nr, nr_groups; | |
1748 | struct perf_session *session; | |
1749 | struct perf_evsel *evsel, *leader = NULL; | |
1750 | struct group_desc { | |
1751 | char *name; | |
1752 | u32 leader_idx; | |
1753 | u32 nr_members; | |
1754 | } *desc; | |
1755 | ||
1756 | if (readn(fd, &nr_groups, sizeof(nr_groups)) != sizeof(nr_groups)) | |
1757 | return -1; | |
1758 | ||
1759 | if (ph->needs_swap) | |
1760 | nr_groups = bswap_32(nr_groups); | |
1761 | ||
1762 | ph->env.nr_groups = nr_groups; | |
1763 | if (!nr_groups) { | |
1764 | pr_debug("group desc not available\n"); | |
1765 | return 0; | |
1766 | } | |
1767 | ||
1768 | desc = calloc(nr_groups, sizeof(*desc)); | |
1769 | if (!desc) | |
1770 | return -1; | |
1771 | ||
1772 | for (i = 0; i < nr_groups; i++) { | |
1773 | desc[i].name = do_read_string(fd, ph); | |
1774 | if (!desc[i].name) | |
1775 | goto out_free; | |
1776 | ||
1777 | if (readn(fd, &desc[i].leader_idx, sizeof(u32)) != sizeof(u32)) | |
1778 | goto out_free; | |
1779 | ||
1780 | if (readn(fd, &desc[i].nr_members, sizeof(u32)) != sizeof(u32)) | |
1781 | goto out_free; | |
1782 | ||
1783 | if (ph->needs_swap) { | |
1784 | desc[i].leader_idx = bswap_32(desc[i].leader_idx); | |
1785 | desc[i].nr_members = bswap_32(desc[i].nr_members); | |
1786 | } | |
1787 | } | |
1788 | ||
1789 | /* | |
1790 | * Rebuild group relationship based on the group_desc | |
1791 | */ | |
1792 | session = container_of(ph, struct perf_session, header); | |
1793 | session->evlist->nr_groups = nr_groups; | |
1794 | ||
1795 | i = nr = 0; | |
0050f7aa | 1796 | evlist__for_each(session->evlist, evsel) { |
a8bb559b NK |
1797 | if (evsel->idx == (int) desc[i].leader_idx) { |
1798 | evsel->leader = evsel; | |
1799 | /* {anon_group} is a dummy name */ | |
210e812f | 1800 | if (strcmp(desc[i].name, "{anon_group}")) { |
a8bb559b | 1801 | evsel->group_name = desc[i].name; |
210e812f NK |
1802 | desc[i].name = NULL; |
1803 | } | |
a8bb559b NK |
1804 | evsel->nr_members = desc[i].nr_members; |
1805 | ||
1806 | if (i >= nr_groups || nr > 0) { | |
1807 | pr_debug("invalid group desc\n"); | |
1808 | goto out_free; | |
1809 | } | |
1810 | ||
1811 | leader = evsel; | |
1812 | nr = evsel->nr_members - 1; | |
1813 | i++; | |
1814 | } else if (nr) { | |
1815 | /* This is a group member */ | |
1816 | evsel->leader = leader; | |
1817 | ||
1818 | nr--; | |
1819 | } | |
1820 | } | |
1821 | ||
1822 | if (i != nr_groups || nr != 0) { | |
1823 | pr_debug("invalid group desc\n"); | |
1824 | goto out_free; | |
1825 | } | |
1826 | ||
1827 | ret = 0; | |
1828 | out_free: | |
50a2740b | 1829 | for (i = 0; i < nr_groups; i++) |
74cf249d | 1830 | zfree(&desc[i].name); |
a8bb559b NK |
1831 | free(desc); |
1832 | ||
1833 | return ret; | |
1834 | } | |
1835 | ||
fbe96f29 SE |
1836 | struct feature_ops { |
1837 | int (*write)(int fd, struct perf_header *h, struct perf_evlist *evlist); | |
1838 | void (*print)(struct perf_header *h, int fd, FILE *fp); | |
f1c67db7 | 1839 | int (*process)(struct perf_file_section *section, |
3d7eb86b | 1840 | struct perf_header *h, int fd, void *data); |
fbe96f29 SE |
1841 | const char *name; |
1842 | bool full_only; | |
1843 | }; | |
1844 | ||
8cdfa78a RR |
1845 | #define FEAT_OPA(n, func) \ |
1846 | [n] = { .name = #n, .write = write_##func, .print = print_##func } | |
f1c67db7 RR |
1847 | #define FEAT_OPP(n, func) \ |
1848 | [n] = { .name = #n, .write = write_##func, .print = print_##func, \ | |
1849 | .process = process_##func } | |
8cdfa78a | 1850 | #define FEAT_OPF(n, func) \ |
f1c67db7 | 1851 | [n] = { .name = #n, .write = write_##func, .print = print_##func, \ |
a1ae5655 | 1852 | .process = process_##func, .full_only = true } |
8cdfa78a RR |
1853 | |
1854 | /* feature_ops not implemented: */ | |
2eeaaa09 SE |
1855 | #define print_tracing_data NULL |
1856 | #define print_build_id NULL | |
fbe96f29 SE |
1857 | |
1858 | static const struct feature_ops feat_ops[HEADER_LAST_FEATURE] = { | |
2eeaaa09 | 1859 | FEAT_OPP(HEADER_TRACING_DATA, tracing_data), |
f1c67db7 | 1860 | FEAT_OPP(HEADER_BUILD_ID, build_id), |
a1ae5655 NK |
1861 | FEAT_OPP(HEADER_HOSTNAME, hostname), |
1862 | FEAT_OPP(HEADER_OSRELEASE, osrelease), | |
1863 | FEAT_OPP(HEADER_VERSION, version), | |
1864 | FEAT_OPP(HEADER_ARCH, arch), | |
1865 | FEAT_OPP(HEADER_NRCPUS, nrcpus), | |
1866 | FEAT_OPP(HEADER_CPUDESC, cpudesc), | |
37e9d750 | 1867 | FEAT_OPP(HEADER_CPUID, cpuid), |
a1ae5655 | 1868 | FEAT_OPP(HEADER_TOTAL_MEM, total_mem), |
7c2f7afd | 1869 | FEAT_OPP(HEADER_EVENT_DESC, event_desc), |
a1ae5655 | 1870 | FEAT_OPP(HEADER_CMDLINE, cmdline), |
8cdfa78a RR |
1871 | FEAT_OPF(HEADER_CPU_TOPOLOGY, cpu_topology), |
1872 | FEAT_OPF(HEADER_NUMA_TOPOLOGY, numa_topology), | |
330aa675 | 1873 | FEAT_OPA(HEADER_BRANCH_STACK, branch_stack), |
a1ae5655 | 1874 | FEAT_OPP(HEADER_PMU_MAPPINGS, pmu_mappings), |
a8bb559b | 1875 | FEAT_OPP(HEADER_GROUP_DESC, group_desc), |
fbe96f29 SE |
1876 | }; |
1877 | ||
1878 | struct header_print_data { | |
1879 | FILE *fp; | |
1880 | bool full; /* extended list of headers */ | |
1881 | }; | |
1882 | ||
1883 | static int perf_file_section__fprintf_info(struct perf_file_section *section, | |
1884 | struct perf_header *ph, | |
1885 | int feat, int fd, void *data) | |
1886 | { | |
1887 | struct header_print_data *hd = data; | |
1888 | ||
1889 | if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) { | |
1890 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " | |
1891 | "%d, continuing...\n", section->offset, feat); | |
1892 | return 0; | |
1893 | } | |
b1e5a9be | 1894 | if (feat >= HEADER_LAST_FEATURE) { |
fbe96f29 | 1895 | pr_warning("unknown feature %d\n", feat); |
f7a8a133 | 1896 | return 0; |
fbe96f29 SE |
1897 | } |
1898 | if (!feat_ops[feat].print) | |
1899 | return 0; | |
1900 | ||
1901 | if (!feat_ops[feat].full_only || hd->full) | |
1902 | feat_ops[feat].print(ph, fd, hd->fp); | |
1903 | else | |
1904 | fprintf(hd->fp, "# %s info available, use -I to display\n", | |
1905 | feat_ops[feat].name); | |
1906 | ||
1907 | return 0; | |
1908 | } | |
1909 | ||
1910 | int perf_header__fprintf_info(struct perf_session *session, FILE *fp, bool full) | |
1911 | { | |
1912 | struct header_print_data hd; | |
1913 | struct perf_header *header = &session->header; | |
cc9784bd | 1914 | int fd = perf_data_file__fd(session->file); |
fbe96f29 SE |
1915 | hd.fp = fp; |
1916 | hd.full = full; | |
1917 | ||
1918 | perf_header__process_sections(header, fd, &hd, | |
1919 | perf_file_section__fprintf_info); | |
1920 | return 0; | |
1921 | } | |
1922 | ||
fbe96f29 SE |
1923 | static int do_write_feat(int fd, struct perf_header *h, int type, |
1924 | struct perf_file_section **p, | |
1925 | struct perf_evlist *evlist) | |
1926 | { | |
1927 | int err; | |
1928 | int ret = 0; | |
1929 | ||
1930 | if (perf_header__has_feat(h, type)) { | |
b1e5a9be RR |
1931 | if (!feat_ops[type].write) |
1932 | return -1; | |
fbe96f29 SE |
1933 | |
1934 | (*p)->offset = lseek(fd, 0, SEEK_CUR); | |
1935 | ||
1936 | err = feat_ops[type].write(fd, h, evlist); | |
1937 | if (err < 0) { | |
1938 | pr_debug("failed to write feature %d\n", type); | |
1939 | ||
1940 | /* undo anything written */ | |
1941 | lseek(fd, (*p)->offset, SEEK_SET); | |
1942 | ||
1943 | return -1; | |
1944 | } | |
1945 | (*p)->size = lseek(fd, 0, SEEK_CUR) - (*p)->offset; | |
1946 | (*p)++; | |
1947 | } | |
1948 | return ret; | |
1949 | } | |
1950 | ||
1c0b04d1 | 1951 | static int perf_header__adds_write(struct perf_header *header, |
361c99a6 | 1952 | struct perf_evlist *evlist, int fd) |
2ba08250 | 1953 | { |
9e827dd0 | 1954 | int nr_sections; |
fbe96f29 | 1955 | struct perf_file_section *feat_sec, *p; |
9e827dd0 FW |
1956 | int sec_size; |
1957 | u64 sec_start; | |
b1e5a9be | 1958 | int feat; |
fbe96f29 | 1959 | int err; |
9e827dd0 | 1960 | |
1c0b04d1 | 1961 | nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS); |
9e827dd0 | 1962 | if (!nr_sections) |
d5eed904 | 1963 | return 0; |
9e827dd0 | 1964 | |
91b98804 | 1965 | feat_sec = p = calloc(nr_sections, sizeof(*feat_sec)); |
d5eed904 ACM |
1966 | if (feat_sec == NULL) |
1967 | return -ENOMEM; | |
9e827dd0 FW |
1968 | |
1969 | sec_size = sizeof(*feat_sec) * nr_sections; | |
1970 | ||
8d541e97 | 1971 | sec_start = header->feat_offset; |
f887f301 | 1972 | lseek(fd, sec_start + sec_size, SEEK_SET); |
2ba08250 | 1973 | |
b1e5a9be RR |
1974 | for_each_set_bit(feat, header->adds_features, HEADER_FEAT_BITS) { |
1975 | if (do_write_feat(fd, header, feat, &p, evlist)) | |
1976 | perf_header__clear_feat(header, feat); | |
1977 | } | |
9e827dd0 | 1978 | |
f887f301 | 1979 | lseek(fd, sec_start, SEEK_SET); |
fbe96f29 SE |
1980 | /* |
1981 | * may write more than needed due to dropped feature, but | |
1982 | * this is okay, reader will skip the mising entries | |
1983 | */ | |
d5eed904 ACM |
1984 | err = do_write(fd, feat_sec, sec_size); |
1985 | if (err < 0) | |
1986 | pr_debug("failed to write feature section\n"); | |
9e827dd0 | 1987 | free(feat_sec); |
d5eed904 | 1988 | return err; |
9e827dd0 | 1989 | } |
2ba08250 | 1990 | |
8dc58101 TZ |
1991 | int perf_header__write_pipe(int fd) |
1992 | { | |
1993 | struct perf_pipe_file_header f_header; | |
1994 | int err; | |
1995 | ||
1996 | f_header = (struct perf_pipe_file_header){ | |
1997 | .magic = PERF_MAGIC, | |
1998 | .size = sizeof(f_header), | |
1999 | }; | |
2000 | ||
2001 | err = do_write(fd, &f_header, sizeof(f_header)); | |
2002 | if (err < 0) { | |
2003 | pr_debug("failed to write perf pipe header\n"); | |
2004 | return err; | |
2005 | } | |
2006 | ||
2007 | return 0; | |
2008 | } | |
2009 | ||
a91e5431 ACM |
2010 | int perf_session__write_header(struct perf_session *session, |
2011 | struct perf_evlist *evlist, | |
2012 | int fd, bool at_exit) | |
7c6a1c65 PZ |
2013 | { |
2014 | struct perf_file_header f_header; | |
2015 | struct perf_file_attr f_attr; | |
1c0b04d1 | 2016 | struct perf_header *header = &session->header; |
563aecb2 | 2017 | struct perf_evsel *evsel; |
944d62ba | 2018 | u64 attr_offset; |
a91e5431 | 2019 | int err; |
7c6a1c65 PZ |
2020 | |
2021 | lseek(fd, sizeof(f_header), SEEK_SET); | |
2022 | ||
0050f7aa | 2023 | evlist__for_each(session->evlist, evsel) { |
6606f873 RR |
2024 | evsel->id_offset = lseek(fd, 0, SEEK_CUR); |
2025 | err = do_write(fd, evsel->id, evsel->ids * sizeof(u64)); | |
d5eed904 ACM |
2026 | if (err < 0) { |
2027 | pr_debug("failed to write perf header\n"); | |
2028 | return err; | |
2029 | } | |
7c6a1c65 PZ |
2030 | } |
2031 | ||
944d62ba | 2032 | attr_offset = lseek(fd, 0, SEEK_CUR); |
7c6a1c65 | 2033 | |
0050f7aa | 2034 | evlist__for_each(evlist, evsel) { |
7c6a1c65 | 2035 | f_attr = (struct perf_file_attr){ |
6606f873 | 2036 | .attr = evsel->attr, |
7c6a1c65 | 2037 | .ids = { |
6606f873 RR |
2038 | .offset = evsel->id_offset, |
2039 | .size = evsel->ids * sizeof(u64), | |
7c6a1c65 PZ |
2040 | } |
2041 | }; | |
d5eed904 ACM |
2042 | err = do_write(fd, &f_attr, sizeof(f_attr)); |
2043 | if (err < 0) { | |
2044 | pr_debug("failed to write perf header attribute\n"); | |
2045 | return err; | |
2046 | } | |
7c6a1c65 PZ |
2047 | } |
2048 | ||
d645c442 AH |
2049 | if (!header->data_offset) |
2050 | header->data_offset = lseek(fd, 0, SEEK_CUR); | |
8d541e97 | 2051 | header->feat_offset = header->data_offset + header->data_size; |
7c6a1c65 | 2052 | |
d5eed904 | 2053 | if (at_exit) { |
1c0b04d1 | 2054 | err = perf_header__adds_write(header, evlist, fd); |
d5eed904 ACM |
2055 | if (err < 0) |
2056 | return err; | |
2057 | } | |
9e827dd0 | 2058 | |
7c6a1c65 PZ |
2059 | f_header = (struct perf_file_header){ |
2060 | .magic = PERF_MAGIC, | |
2061 | .size = sizeof(f_header), | |
2062 | .attr_size = sizeof(f_attr), | |
2063 | .attrs = { | |
944d62ba | 2064 | .offset = attr_offset, |
a91e5431 | 2065 | .size = evlist->nr_entries * sizeof(f_attr), |
7c6a1c65 PZ |
2066 | }, |
2067 | .data = { | |
1c0b04d1 ACM |
2068 | .offset = header->data_offset, |
2069 | .size = header->data_size, | |
7c6a1c65 | 2070 | }, |
44b3c578 | 2071 | /* event_types is ignored, store zeros */ |
7c6a1c65 PZ |
2072 | }; |
2073 | ||
1c0b04d1 | 2074 | memcpy(&f_header.adds_features, &header->adds_features, sizeof(header->adds_features)); |
2ba08250 | 2075 | |
7c6a1c65 | 2076 | lseek(fd, 0, SEEK_SET); |
d5eed904 ACM |
2077 | err = do_write(fd, &f_header, sizeof(f_header)); |
2078 | if (err < 0) { | |
2079 | pr_debug("failed to write perf header\n"); | |
2080 | return err; | |
2081 | } | |
1c0b04d1 | 2082 | lseek(fd, header->data_offset + header->data_size, SEEK_SET); |
7c6a1c65 | 2083 | |
d5eed904 | 2084 | return 0; |
7c6a1c65 PZ |
2085 | } |
2086 | ||
1c0b04d1 | 2087 | static int perf_header__getbuffer64(struct perf_header *header, |
ba21594c ACM |
2088 | int fd, void *buf, size_t size) |
2089 | { | |
1e7972cc | 2090 | if (readn(fd, buf, size) <= 0) |
ba21594c ACM |
2091 | return -1; |
2092 | ||
1c0b04d1 | 2093 | if (header->needs_swap) |
ba21594c ACM |
2094 | mem_bswap_64(buf, size); |
2095 | ||
2096 | return 0; | |
2097 | } | |
2098 | ||
1c0b04d1 | 2099 | int perf_header__process_sections(struct perf_header *header, int fd, |
fbe96f29 | 2100 | void *data, |
1c0b04d1 | 2101 | int (*process)(struct perf_file_section *section, |
b1e5a9be RR |
2102 | struct perf_header *ph, |
2103 | int feat, int fd, void *data)) | |
2ba08250 | 2104 | { |
b1e5a9be | 2105 | struct perf_file_section *feat_sec, *sec; |
9e827dd0 FW |
2106 | int nr_sections; |
2107 | int sec_size; | |
b1e5a9be RR |
2108 | int feat; |
2109 | int err; | |
9e827dd0 | 2110 | |
1c0b04d1 | 2111 | nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS); |
9e827dd0 | 2112 | if (!nr_sections) |
37562eac | 2113 | return 0; |
9e827dd0 | 2114 | |
91b98804 | 2115 | feat_sec = sec = calloc(nr_sections, sizeof(*feat_sec)); |
9e827dd0 | 2116 | if (!feat_sec) |
37562eac | 2117 | return -1; |
9e827dd0 FW |
2118 | |
2119 | sec_size = sizeof(*feat_sec) * nr_sections; | |
2120 | ||
8d541e97 | 2121 | lseek(fd, header->feat_offset, SEEK_SET); |
9e827dd0 | 2122 | |
b1e5a9be RR |
2123 | err = perf_header__getbuffer64(header, fd, feat_sec, sec_size); |
2124 | if (err < 0) | |
769885f3 | 2125 | goto out_free; |
9e827dd0 | 2126 | |
b1e5a9be RR |
2127 | for_each_set_bit(feat, header->adds_features, HEADER_LAST_FEATURE) { |
2128 | err = process(sec++, header, feat, fd, data); | |
2129 | if (err < 0) | |
2130 | goto out_free; | |
2ba08250 | 2131 | } |
b1e5a9be | 2132 | err = 0; |
769885f3 | 2133 | out_free: |
37562eac ACM |
2134 | free(feat_sec); |
2135 | return err; | |
769885f3 | 2136 | } |
4778d2e4 | 2137 | |
114382a0 SE |
2138 | static const int attr_file_abi_sizes[] = { |
2139 | [0] = PERF_ATTR_SIZE_VER0, | |
2140 | [1] = PERF_ATTR_SIZE_VER1, | |
239cc478 | 2141 | [2] = PERF_ATTR_SIZE_VER2, |
0f6a3015 | 2142 | [3] = PERF_ATTR_SIZE_VER3, |
6a21c0b5 | 2143 | [4] = PERF_ATTR_SIZE_VER4, |
114382a0 SE |
2144 | 0, |
2145 | }; | |
2146 | ||
2147 | /* | |
2148 | * In the legacy file format, the magic number is not used to encode endianness. | |
2149 | * hdr_sz was used to encode endianness. But given that hdr_sz can vary based | |
2150 | * on ABI revisions, we need to try all combinations for all endianness to | |
2151 | * detect the endianness. | |
2152 | */ | |
2153 | static int try_all_file_abis(uint64_t hdr_sz, struct perf_header *ph) | |
73323f54 | 2154 | { |
114382a0 SE |
2155 | uint64_t ref_size, attr_size; |
2156 | int i; | |
73323f54 | 2157 | |
114382a0 SE |
2158 | for (i = 0 ; attr_file_abi_sizes[i]; i++) { |
2159 | ref_size = attr_file_abi_sizes[i] | |
2160 | + sizeof(struct perf_file_section); | |
2161 | if (hdr_sz != ref_size) { | |
2162 | attr_size = bswap_64(hdr_sz); | |
2163 | if (attr_size != ref_size) | |
2164 | continue; | |
73323f54 | 2165 | |
114382a0 SE |
2166 | ph->needs_swap = true; |
2167 | } | |
2168 | pr_debug("ABI%d perf.data file detected, need_swap=%d\n", | |
2169 | i, | |
2170 | ph->needs_swap); | |
2171 | return 0; | |
2172 | } | |
2173 | /* could not determine endianness */ | |
2174 | return -1; | |
2175 | } | |
73323f54 | 2176 | |
114382a0 SE |
2177 | #define PERF_PIPE_HDR_VER0 16 |
2178 | ||
2179 | static const size_t attr_pipe_abi_sizes[] = { | |
2180 | [0] = PERF_PIPE_HDR_VER0, | |
2181 | 0, | |
2182 | }; | |
2183 | ||
2184 | /* | |
2185 | * In the legacy pipe format, there is an implicit assumption that endiannesss | |
2186 | * between host recording the samples, and host parsing the samples is the | |
2187 | * same. This is not always the case given that the pipe output may always be | |
2188 | * redirected into a file and analyzed on a different machine with possibly a | |
2189 | * different endianness and perf_event ABI revsions in the perf tool itself. | |
2190 | */ | |
2191 | static int try_all_pipe_abis(uint64_t hdr_sz, struct perf_header *ph) | |
2192 | { | |
2193 | u64 attr_size; | |
2194 | int i; | |
2195 | ||
2196 | for (i = 0 ; attr_pipe_abi_sizes[i]; i++) { | |
2197 | if (hdr_sz != attr_pipe_abi_sizes[i]) { | |
2198 | attr_size = bswap_64(hdr_sz); | |
2199 | if (attr_size != hdr_sz) | |
2200 | continue; | |
73323f54 SE |
2201 | |
2202 | ph->needs_swap = true; | |
2203 | } | |
114382a0 | 2204 | pr_debug("Pipe ABI%d perf.data file detected\n", i); |
73323f54 SE |
2205 | return 0; |
2206 | } | |
114382a0 SE |
2207 | return -1; |
2208 | } | |
2209 | ||
e84ba4e2 FT |
2210 | bool is_perf_magic(u64 magic) |
2211 | { | |
2212 | if (!memcmp(&magic, __perf_magic1, sizeof(magic)) | |
2213 | || magic == __perf_magic2 | |
2214 | || magic == __perf_magic2_sw) | |
2215 | return true; | |
2216 | ||
2217 | return false; | |
2218 | } | |
2219 | ||
114382a0 SE |
2220 | static int check_magic_endian(u64 magic, uint64_t hdr_sz, |
2221 | bool is_pipe, struct perf_header *ph) | |
2222 | { | |
2223 | int ret; | |
2224 | ||
2225 | /* check for legacy format */ | |
2226 | ret = memcmp(&magic, __perf_magic1, sizeof(magic)); | |
2227 | if (ret == 0) { | |
2a08c3ec | 2228 | ph->version = PERF_HEADER_VERSION_1; |
114382a0 SE |
2229 | pr_debug("legacy perf.data format\n"); |
2230 | if (is_pipe) | |
2231 | return try_all_pipe_abis(hdr_sz, ph); | |
2232 | ||
2233 | return try_all_file_abis(hdr_sz, ph); | |
2234 | } | |
2235 | /* | |
2236 | * the new magic number serves two purposes: | |
2237 | * - unique number to identify actual perf.data files | |
2238 | * - encode endianness of file | |
2239 | */ | |
73323f54 | 2240 | |
114382a0 SE |
2241 | /* check magic number with one endianness */ |
2242 | if (magic == __perf_magic2) | |
73323f54 SE |
2243 | return 0; |
2244 | ||
114382a0 SE |
2245 | /* check magic number with opposite endianness */ |
2246 | if (magic != __perf_magic2_sw) | |
73323f54 SE |
2247 | return -1; |
2248 | ||
2249 | ph->needs_swap = true; | |
2a08c3ec | 2250 | ph->version = PERF_HEADER_VERSION_2; |
73323f54 SE |
2251 | |
2252 | return 0; | |
2253 | } | |
2254 | ||
1c0b04d1 | 2255 | int perf_file_header__read(struct perf_file_header *header, |
37562eac ACM |
2256 | struct perf_header *ph, int fd) |
2257 | { | |
727ebd54 | 2258 | ssize_t ret; |
73323f54 | 2259 | |
37562eac | 2260 | lseek(fd, 0, SEEK_SET); |
37562eac | 2261 | |
73323f54 SE |
2262 | ret = readn(fd, header, sizeof(*header)); |
2263 | if (ret <= 0) | |
37562eac ACM |
2264 | return -1; |
2265 | ||
114382a0 SE |
2266 | if (check_magic_endian(header->magic, |
2267 | header->attr_size, false, ph) < 0) { | |
2268 | pr_debug("magic/endian check failed\n"); | |
73323f54 | 2269 | return -1; |
114382a0 | 2270 | } |
ba21594c | 2271 | |
73323f54 | 2272 | if (ph->needs_swap) { |
1c0b04d1 | 2273 | mem_bswap_64(header, offsetof(struct perf_file_header, |
73323f54 | 2274 | adds_features)); |
ba21594c ACM |
2275 | } |
2276 | ||
1c0b04d1 | 2277 | if (header->size != sizeof(*header)) { |
37562eac | 2278 | /* Support the previous format */ |
1c0b04d1 ACM |
2279 | if (header->size == offsetof(typeof(*header), adds_features)) |
2280 | bitmap_zero(header->adds_features, HEADER_FEAT_BITS); | |
37562eac ACM |
2281 | else |
2282 | return -1; | |
d327fa43 | 2283 | } else if (ph->needs_swap) { |
d327fa43 DA |
2284 | /* |
2285 | * feature bitmap is declared as an array of unsigned longs -- | |
2286 | * not good since its size can differ between the host that | |
2287 | * generated the data file and the host analyzing the file. | |
2288 | * | |
2289 | * We need to handle endianness, but we don't know the size of | |
2290 | * the unsigned long where the file was generated. Take a best | |
2291 | * guess at determining it: try 64-bit swap first (ie., file | |
2292 | * created on a 64-bit host), and check if the hostname feature | |
2293 | * bit is set (this feature bit is forced on as of fbe96f2). | |
2294 | * If the bit is not, undo the 64-bit swap and try a 32-bit | |
2295 | * swap. If the hostname bit is still not set (e.g., older data | |
2296 | * file), punt and fallback to the original behavior -- | |
2297 | * clearing all feature bits and setting buildid. | |
2298 | */ | |
80c0120a DA |
2299 | mem_bswap_64(&header->adds_features, |
2300 | BITS_TO_U64(HEADER_FEAT_BITS)); | |
d327fa43 DA |
2301 | |
2302 | if (!test_bit(HEADER_HOSTNAME, header->adds_features)) { | |
80c0120a DA |
2303 | /* unswap as u64 */ |
2304 | mem_bswap_64(&header->adds_features, | |
2305 | BITS_TO_U64(HEADER_FEAT_BITS)); | |
2306 | ||
2307 | /* unswap as u32 */ | |
2308 | mem_bswap_32(&header->adds_features, | |
2309 | BITS_TO_U32(HEADER_FEAT_BITS)); | |
d327fa43 DA |
2310 | } |
2311 | ||
2312 | if (!test_bit(HEADER_HOSTNAME, header->adds_features)) { | |
2313 | bitmap_zero(header->adds_features, HEADER_FEAT_BITS); | |
2314 | set_bit(HEADER_BUILD_ID, header->adds_features); | |
2315 | } | |
4778d2e4 | 2316 | } |
9e827dd0 | 2317 | |
1c0b04d1 | 2318 | memcpy(&ph->adds_features, &header->adds_features, |
ba21594c | 2319 | sizeof(ph->adds_features)); |
37562eac | 2320 | |
1c0b04d1 ACM |
2321 | ph->data_offset = header->data.offset; |
2322 | ph->data_size = header->data.size; | |
8d541e97 | 2323 | ph->feat_offset = header->data.offset + header->data.size; |
37562eac ACM |
2324 | return 0; |
2325 | } | |
2326 | ||
1c0b04d1 | 2327 | static int perf_file_section__process(struct perf_file_section *section, |
ba21594c | 2328 | struct perf_header *ph, |
da378962 | 2329 | int feat, int fd, void *data) |
37562eac | 2330 | { |
1c0b04d1 | 2331 | if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) { |
9486aa38 | 2332 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " |
1c0b04d1 | 2333 | "%d, continuing...\n", section->offset, feat); |
37562eac ACM |
2334 | return 0; |
2335 | } | |
2336 | ||
b1e5a9be RR |
2337 | if (feat >= HEADER_LAST_FEATURE) { |
2338 | pr_debug("unknown feature %d, continuing...\n", feat); | |
2339 | return 0; | |
2340 | } | |
2341 | ||
f1c67db7 RR |
2342 | if (!feat_ops[feat].process) |
2343 | return 0; | |
37562eac | 2344 | |
3d7eb86b | 2345 | return feat_ops[feat].process(section, ph, fd, data); |
37562eac | 2346 | } |
2ba08250 | 2347 | |
1c0b04d1 | 2348 | static int perf_file_header__read_pipe(struct perf_pipe_file_header *header, |
454c407e TZ |
2349 | struct perf_header *ph, int fd, |
2350 | bool repipe) | |
7c6a1c65 | 2351 | { |
727ebd54 | 2352 | ssize_t ret; |
73323f54 SE |
2353 | |
2354 | ret = readn(fd, header, sizeof(*header)); | |
2355 | if (ret <= 0) | |
2356 | return -1; | |
2357 | ||
114382a0 SE |
2358 | if (check_magic_endian(header->magic, header->size, true, ph) < 0) { |
2359 | pr_debug("endian/magic failed\n"); | |
8dc58101 | 2360 | return -1; |
114382a0 SE |
2361 | } |
2362 | ||
2363 | if (ph->needs_swap) | |
2364 | header->size = bswap_64(header->size); | |
8dc58101 | 2365 | |
1c0b04d1 | 2366 | if (repipe && do_write(STDOUT_FILENO, header, sizeof(*header)) < 0) |
454c407e TZ |
2367 | return -1; |
2368 | ||
8dc58101 TZ |
2369 | return 0; |
2370 | } | |
2371 | ||
d4339569 | 2372 | static int perf_header__read_pipe(struct perf_session *session) |
8dc58101 | 2373 | { |
1c0b04d1 | 2374 | struct perf_header *header = &session->header; |
8dc58101 TZ |
2375 | struct perf_pipe_file_header f_header; |
2376 | ||
cc9784bd JO |
2377 | if (perf_file_header__read_pipe(&f_header, header, |
2378 | perf_data_file__fd(session->file), | |
454c407e | 2379 | session->repipe) < 0) { |
8dc58101 TZ |
2380 | pr_debug("incompatible file format\n"); |
2381 | return -EINVAL; | |
2382 | } | |
2383 | ||
8dc58101 TZ |
2384 | return 0; |
2385 | } | |
2386 | ||
69996df4 SE |
2387 | static int read_attr(int fd, struct perf_header *ph, |
2388 | struct perf_file_attr *f_attr) | |
2389 | { | |
2390 | struct perf_event_attr *attr = &f_attr->attr; | |
2391 | size_t sz, left; | |
2392 | size_t our_sz = sizeof(f_attr->attr); | |
727ebd54 | 2393 | ssize_t ret; |
69996df4 SE |
2394 | |
2395 | memset(f_attr, 0, sizeof(*f_attr)); | |
2396 | ||
2397 | /* read minimal guaranteed structure */ | |
2398 | ret = readn(fd, attr, PERF_ATTR_SIZE_VER0); | |
2399 | if (ret <= 0) { | |
2400 | pr_debug("cannot read %d bytes of header attr\n", | |
2401 | PERF_ATTR_SIZE_VER0); | |
2402 | return -1; | |
2403 | } | |
2404 | ||
2405 | /* on file perf_event_attr size */ | |
2406 | sz = attr->size; | |
114382a0 | 2407 | |
69996df4 SE |
2408 | if (ph->needs_swap) |
2409 | sz = bswap_32(sz); | |
2410 | ||
2411 | if (sz == 0) { | |
2412 | /* assume ABI0 */ | |
2413 | sz = PERF_ATTR_SIZE_VER0; | |
2414 | } else if (sz > our_sz) { | |
2415 | pr_debug("file uses a more recent and unsupported ABI" | |
2416 | " (%zu bytes extra)\n", sz - our_sz); | |
2417 | return -1; | |
2418 | } | |
2419 | /* what we have not yet read and that we know about */ | |
2420 | left = sz - PERF_ATTR_SIZE_VER0; | |
2421 | if (left) { | |
2422 | void *ptr = attr; | |
2423 | ptr += PERF_ATTR_SIZE_VER0; | |
2424 | ||
2425 | ret = readn(fd, ptr, left); | |
2426 | } | |
2427 | /* read perf_file_section, ids are read in caller */ | |
2428 | ret = readn(fd, &f_attr->ids, sizeof(f_attr->ids)); | |
2429 | ||
2430 | return ret <= 0 ? -1 : 0; | |
2431 | } | |
2432 | ||
831394bd NK |
2433 | static int perf_evsel__prepare_tracepoint_event(struct perf_evsel *evsel, |
2434 | struct pevent *pevent) | |
cb9dd49e | 2435 | { |
831394bd | 2436 | struct event_format *event; |
cb9dd49e ACM |
2437 | char bf[128]; |
2438 | ||
831394bd NK |
2439 | /* already prepared */ |
2440 | if (evsel->tp_format) | |
2441 | return 0; | |
2442 | ||
3dce2ce3 NK |
2443 | if (pevent == NULL) { |
2444 | pr_debug("broken or missing trace data\n"); | |
2445 | return -1; | |
2446 | } | |
2447 | ||
831394bd | 2448 | event = pevent_find_event(pevent, evsel->attr.config); |
cb9dd49e ACM |
2449 | if (event == NULL) |
2450 | return -1; | |
2451 | ||
831394bd NK |
2452 | if (!evsel->name) { |
2453 | snprintf(bf, sizeof(bf), "%s:%s", event->system, event->name); | |
2454 | evsel->name = strdup(bf); | |
2455 | if (evsel->name == NULL) | |
2456 | return -1; | |
2457 | } | |
cb9dd49e | 2458 | |
fcf65bf1 | 2459 | evsel->tp_format = event; |
cb9dd49e ACM |
2460 | return 0; |
2461 | } | |
2462 | ||
831394bd NK |
2463 | static int perf_evlist__prepare_tracepoint_events(struct perf_evlist *evlist, |
2464 | struct pevent *pevent) | |
cb9dd49e ACM |
2465 | { |
2466 | struct perf_evsel *pos; | |
2467 | ||
0050f7aa | 2468 | evlist__for_each(evlist, pos) { |
831394bd NK |
2469 | if (pos->attr.type == PERF_TYPE_TRACEPOINT && |
2470 | perf_evsel__prepare_tracepoint_event(pos, pevent)) | |
cb9dd49e ACM |
2471 | return -1; |
2472 | } | |
2473 | ||
2474 | return 0; | |
2475 | } | |
2476 | ||
d4339569 | 2477 | int perf_session__read_header(struct perf_session *session) |
8dc58101 | 2478 | { |
cc9784bd | 2479 | struct perf_data_file *file = session->file; |
1c0b04d1 | 2480 | struct perf_header *header = &session->header; |
ba21594c | 2481 | struct perf_file_header f_header; |
7c6a1c65 PZ |
2482 | struct perf_file_attr f_attr; |
2483 | u64 f_id; | |
7c6a1c65 | 2484 | int nr_attrs, nr_ids, i, j; |
cc9784bd | 2485 | int fd = perf_data_file__fd(file); |
7c6a1c65 | 2486 | |
334fe7a3 | 2487 | session->evlist = perf_evlist__new(); |
a91e5431 ACM |
2488 | if (session->evlist == NULL) |
2489 | return -ENOMEM; | |
2490 | ||
cc9784bd | 2491 | if (perf_data_file__is_pipe(file)) |
d4339569 | 2492 | return perf_header__read_pipe(session); |
8dc58101 | 2493 | |
69996df4 | 2494 | if (perf_file_header__read(&f_header, header, fd) < 0) |
4dc0a04b | 2495 | return -EINVAL; |
7c6a1c65 | 2496 | |
b314e5cf NK |
2497 | /* |
2498 | * Sanity check that perf.data was written cleanly; data size is | |
2499 | * initialized to 0 and updated only if the on_exit function is run. | |
2500 | * If data size is still 0 then the file contains only partial | |
2501 | * information. Just warn user and process it as much as it can. | |
2502 | */ | |
2503 | if (f_header.data.size == 0) { | |
2504 | pr_warning("WARNING: The %s file's data size field is 0 which is unexpected.\n" | |
2505 | "Was the 'perf record' command properly terminated?\n", | |
cc9784bd | 2506 | file->path); |
b314e5cf NK |
2507 | } |
2508 | ||
69996df4 | 2509 | nr_attrs = f_header.attrs.size / f_header.attr_size; |
7c6a1c65 PZ |
2510 | lseek(fd, f_header.attrs.offset, SEEK_SET); |
2511 | ||
2512 | for (i = 0; i < nr_attrs; i++) { | |
a91e5431 | 2513 | struct perf_evsel *evsel; |
1c222bce | 2514 | off_t tmp; |
7c6a1c65 | 2515 | |
69996df4 | 2516 | if (read_attr(fd, header, &f_attr) < 0) |
769885f3 | 2517 | goto out_errno; |
ba21594c | 2518 | |
eda3913b DA |
2519 | if (header->needs_swap) |
2520 | perf_event__attr_swap(&f_attr.attr); | |
2521 | ||
1c222bce | 2522 | tmp = lseek(fd, 0, SEEK_CUR); |
ef503831 | 2523 | evsel = perf_evsel__new(&f_attr.attr); |
7c6a1c65 | 2524 | |
a91e5431 ACM |
2525 | if (evsel == NULL) |
2526 | goto out_delete_evlist; | |
0807d2d8 ACM |
2527 | |
2528 | evsel->needs_swap = header->needs_swap; | |
a91e5431 ACM |
2529 | /* |
2530 | * Do it before so that if perf_evsel__alloc_id fails, this | |
2531 | * entry gets purged too at perf_evlist__delete(). | |
2532 | */ | |
2533 | perf_evlist__add(session->evlist, evsel); | |
7c6a1c65 PZ |
2534 | |
2535 | nr_ids = f_attr.ids.size / sizeof(u64); | |
a91e5431 ACM |
2536 | /* |
2537 | * We don't have the cpu and thread maps on the header, so | |
2538 | * for allocating the perf_sample_id table we fake 1 cpu and | |
2539 | * hattr->ids threads. | |
2540 | */ | |
2541 | if (perf_evsel__alloc_id(evsel, 1, nr_ids)) | |
2542 | goto out_delete_evlist; | |
2543 | ||
7c6a1c65 PZ |
2544 | lseek(fd, f_attr.ids.offset, SEEK_SET); |
2545 | ||
2546 | for (j = 0; j < nr_ids; j++) { | |
1c0b04d1 | 2547 | if (perf_header__getbuffer64(header, fd, &f_id, sizeof(f_id))) |
769885f3 | 2548 | goto out_errno; |
7c6a1c65 | 2549 | |
a91e5431 | 2550 | perf_evlist__id_add(session->evlist, evsel, 0, j, f_id); |
7c6a1c65 | 2551 | } |
11deb1f9 | 2552 | |
7c6a1c65 PZ |
2553 | lseek(fd, tmp, SEEK_SET); |
2554 | } | |
2555 | ||
d04b35f8 ACM |
2556 | symbol_conf.nr_events = nr_attrs; |
2557 | ||
29f5ffd3 | 2558 | perf_header__process_sections(header, fd, &session->tevent, |
fbe96f29 | 2559 | perf_file_section__process); |
4778d2e4 | 2560 | |
831394bd | 2561 | if (perf_evlist__prepare_tracepoint_events(session->evlist, |
29f5ffd3 | 2562 | session->tevent.pevent)) |
cb9dd49e ACM |
2563 | goto out_delete_evlist; |
2564 | ||
4dc0a04b | 2565 | return 0; |
769885f3 ACM |
2566 | out_errno: |
2567 | return -errno; | |
a91e5431 ACM |
2568 | |
2569 | out_delete_evlist: | |
2570 | perf_evlist__delete(session->evlist); | |
2571 | session->evlist = NULL; | |
2572 | return -ENOMEM; | |
7c6a1c65 | 2573 | } |
0d3a5c88 | 2574 | |
45694aa7 | 2575 | int perf_event__synthesize_attr(struct perf_tool *tool, |
f4d83436 | 2576 | struct perf_event_attr *attr, u32 ids, u64 *id, |
743eb868 | 2577 | perf_event__handler_t process) |
2c46dbb5 | 2578 | { |
8115d60c | 2579 | union perf_event *ev; |
2c46dbb5 TZ |
2580 | size_t size; |
2581 | int err; | |
2582 | ||
2583 | size = sizeof(struct perf_event_attr); | |
9ac3e487 | 2584 | size = PERF_ALIGN(size, sizeof(u64)); |
2c46dbb5 TZ |
2585 | size += sizeof(struct perf_event_header); |
2586 | size += ids * sizeof(u64); | |
2587 | ||
2588 | ev = malloc(size); | |
2589 | ||
ce47dc56 CS |
2590 | if (ev == NULL) |
2591 | return -ENOMEM; | |
2592 | ||
2c46dbb5 TZ |
2593 | ev->attr.attr = *attr; |
2594 | memcpy(ev->attr.id, id, ids * sizeof(u64)); | |
2595 | ||
2596 | ev->attr.header.type = PERF_RECORD_HEADER_ATTR; | |
f4d83436 | 2597 | ev->attr.header.size = (u16)size; |
2c46dbb5 | 2598 | |
f4d83436 RR |
2599 | if (ev->attr.header.size == size) |
2600 | err = process(tool, ev, NULL, NULL); | |
2601 | else | |
2602 | err = -E2BIG; | |
2c46dbb5 TZ |
2603 | |
2604 | free(ev); | |
2605 | ||
2606 | return err; | |
2607 | } | |
2608 | ||
45694aa7 | 2609 | int perf_event__synthesize_attrs(struct perf_tool *tool, |
d20deb64 | 2610 | struct perf_session *session, |
a91e5431 | 2611 | perf_event__handler_t process) |
2c46dbb5 | 2612 | { |
6606f873 | 2613 | struct perf_evsel *evsel; |
a91e5431 | 2614 | int err = 0; |
2c46dbb5 | 2615 | |
0050f7aa | 2616 | evlist__for_each(session->evlist, evsel) { |
6606f873 RR |
2617 | err = perf_event__synthesize_attr(tool, &evsel->attr, evsel->ids, |
2618 | evsel->id, process); | |
2c46dbb5 TZ |
2619 | if (err) { |
2620 | pr_debug("failed to create perf header attribute\n"); | |
2621 | return err; | |
2622 | } | |
2623 | } | |
2624 | ||
2625 | return err; | |
2626 | } | |
2627 | ||
47c3d109 AH |
2628 | int perf_event__process_attr(struct perf_tool *tool __maybe_unused, |
2629 | union perf_event *event, | |
10d0f086 | 2630 | struct perf_evlist **pevlist) |
2c46dbb5 | 2631 | { |
f4d83436 | 2632 | u32 i, ids, n_ids; |
a91e5431 | 2633 | struct perf_evsel *evsel; |
10d0f086 | 2634 | struct perf_evlist *evlist = *pevlist; |
2c46dbb5 | 2635 | |
10d0f086 | 2636 | if (evlist == NULL) { |
334fe7a3 | 2637 | *pevlist = evlist = perf_evlist__new(); |
10d0f086 | 2638 | if (evlist == NULL) |
a91e5431 ACM |
2639 | return -ENOMEM; |
2640 | } | |
2641 | ||
ef503831 | 2642 | evsel = perf_evsel__new(&event->attr.attr); |
a91e5431 | 2643 | if (evsel == NULL) |
2c46dbb5 TZ |
2644 | return -ENOMEM; |
2645 | ||
10d0f086 | 2646 | perf_evlist__add(evlist, evsel); |
a91e5431 | 2647 | |
8115d60c ACM |
2648 | ids = event->header.size; |
2649 | ids -= (void *)&event->attr.id - (void *)event; | |
2c46dbb5 | 2650 | n_ids = ids / sizeof(u64); |
a91e5431 ACM |
2651 | /* |
2652 | * We don't have the cpu and thread maps on the header, so | |
2653 | * for allocating the perf_sample_id table we fake 1 cpu and | |
2654 | * hattr->ids threads. | |
2655 | */ | |
2656 | if (perf_evsel__alloc_id(evsel, 1, n_ids)) | |
2657 | return -ENOMEM; | |
2c46dbb5 TZ |
2658 | |
2659 | for (i = 0; i < n_ids; i++) { | |
10d0f086 | 2660 | perf_evlist__id_add(evlist, evsel, 0, i, event->attr.id[i]); |
2c46dbb5 TZ |
2661 | } |
2662 | ||
7e0d6fc9 AH |
2663 | symbol_conf.nr_events = evlist->nr_entries; |
2664 | ||
2c46dbb5 TZ |
2665 | return 0; |
2666 | } | |
cd19a035 | 2667 | |
45694aa7 | 2668 | int perf_event__synthesize_tracing_data(struct perf_tool *tool, int fd, |
d20deb64 | 2669 | struct perf_evlist *evlist, |
743eb868 | 2670 | perf_event__handler_t process) |
9215545e | 2671 | { |
8115d60c | 2672 | union perf_event ev; |
29208e57 | 2673 | struct tracing_data *tdata; |
9215545e | 2674 | ssize_t size = 0, aligned_size = 0, padding; |
1d037ca1 | 2675 | int err __maybe_unused = 0; |
9215545e | 2676 | |
29208e57 JO |
2677 | /* |
2678 | * We are going to store the size of the data followed | |
2679 | * by the data contents. Since the fd descriptor is a pipe, | |
2680 | * we cannot seek back to store the size of the data once | |
2681 | * we know it. Instead we: | |
2682 | * | |
2683 | * - write the tracing data to the temp file | |
2684 | * - get/write the data size to pipe | |
2685 | * - write the tracing data from the temp file | |
2686 | * to the pipe | |
2687 | */ | |
2688 | tdata = tracing_data_get(&evlist->entries, fd, true); | |
2689 | if (!tdata) | |
2690 | return -1; | |
2691 | ||
9215545e TZ |
2692 | memset(&ev, 0, sizeof(ev)); |
2693 | ||
2694 | ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA; | |
29208e57 | 2695 | size = tdata->size; |
9ac3e487 | 2696 | aligned_size = PERF_ALIGN(size, sizeof(u64)); |
9215545e TZ |
2697 | padding = aligned_size - size; |
2698 | ev.tracing_data.header.size = sizeof(ev.tracing_data); | |
2699 | ev.tracing_data.size = aligned_size; | |
2700 | ||
45694aa7 | 2701 | process(tool, &ev, NULL, NULL); |
9215545e | 2702 | |
29208e57 JO |
2703 | /* |
2704 | * The put function will copy all the tracing data | |
2705 | * stored in temp file to the pipe. | |
2706 | */ | |
2707 | tracing_data_put(tdata); | |
2708 | ||
9215545e TZ |
2709 | write_padded(fd, NULL, 0, padding); |
2710 | ||
2711 | return aligned_size; | |
2712 | } | |
2713 | ||
47c3d109 AH |
2714 | int perf_event__process_tracing_data(struct perf_tool *tool __maybe_unused, |
2715 | union perf_event *event, | |
8115d60c | 2716 | struct perf_session *session) |
9215545e | 2717 | { |
8115d60c | 2718 | ssize_t size_read, padding, size = event->tracing_data.size; |
cc9784bd JO |
2719 | int fd = perf_data_file__fd(session->file); |
2720 | off_t offset = lseek(fd, 0, SEEK_CUR); | |
9215545e TZ |
2721 | char buf[BUFSIZ]; |
2722 | ||
2723 | /* setup for reading amidst mmap */ | |
cc9784bd | 2724 | lseek(fd, offset + sizeof(struct tracing_data_event), |
9215545e TZ |
2725 | SEEK_SET); |
2726 | ||
29f5ffd3 | 2727 | size_read = trace_report(fd, &session->tevent, |
da378962 | 2728 | session->repipe); |
9ac3e487 | 2729 | padding = PERF_ALIGN(size_read, sizeof(u64)) - size_read; |
9215545e | 2730 | |
cc9784bd | 2731 | if (readn(fd, buf, padding) < 0) { |
2caa48a2 ACM |
2732 | pr_err("%s: reading input file", __func__); |
2733 | return -1; | |
2734 | } | |
454c407e TZ |
2735 | if (session->repipe) { |
2736 | int retw = write(STDOUT_FILENO, buf, padding); | |
2caa48a2 ACM |
2737 | if (retw <= 0 || retw != padding) { |
2738 | pr_err("%s: repiping tracing data padding", __func__); | |
2739 | return -1; | |
2740 | } | |
454c407e | 2741 | } |
9215545e | 2742 | |
2caa48a2 ACM |
2743 | if (size_read + padding != size) { |
2744 | pr_err("%s: tracing data size mismatch", __func__); | |
2745 | return -1; | |
2746 | } | |
9215545e | 2747 | |
831394bd | 2748 | perf_evlist__prepare_tracepoint_events(session->evlist, |
29f5ffd3 | 2749 | session->tevent.pevent); |
8b6ee4c5 | 2750 | |
9215545e TZ |
2751 | return size_read + padding; |
2752 | } | |
c7929e47 | 2753 | |
45694aa7 | 2754 | int perf_event__synthesize_build_id(struct perf_tool *tool, |
d20deb64 | 2755 | struct dso *pos, u16 misc, |
8115d60c | 2756 | perf_event__handler_t process, |
743eb868 | 2757 | struct machine *machine) |
c7929e47 | 2758 | { |
8115d60c | 2759 | union perf_event ev; |
c7929e47 TZ |
2760 | size_t len; |
2761 | int err = 0; | |
2762 | ||
2763 | if (!pos->hit) | |
2764 | return err; | |
2765 | ||
2766 | memset(&ev, 0, sizeof(ev)); | |
2767 | ||
2768 | len = pos->long_name_len + 1; | |
9ac3e487 | 2769 | len = PERF_ALIGN(len, NAME_ALIGN); |
c7929e47 TZ |
2770 | memcpy(&ev.build_id.build_id, pos->build_id, sizeof(pos->build_id)); |
2771 | ev.build_id.header.type = PERF_RECORD_HEADER_BUILD_ID; | |
2772 | ev.build_id.header.misc = misc; | |
23346f21 | 2773 | ev.build_id.pid = machine->pid; |
c7929e47 TZ |
2774 | ev.build_id.header.size = sizeof(ev.build_id) + len; |
2775 | memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len); | |
2776 | ||
45694aa7 | 2777 | err = process(tool, &ev, NULL, machine); |
c7929e47 TZ |
2778 | |
2779 | return err; | |
2780 | } | |
2781 | ||
1d037ca1 | 2782 | int perf_event__process_build_id(struct perf_tool *tool __maybe_unused, |
d20deb64 | 2783 | union perf_event *event, |
8115d60c | 2784 | struct perf_session *session) |
c7929e47 | 2785 | { |
8115d60c ACM |
2786 | __event_process_build_id(&event->build_id, |
2787 | event->build_id.filename, | |
a1645ce1 | 2788 | session); |
c7929e47 TZ |
2789 | return 0; |
2790 | } |