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 | ||
99fa2984 | 872 | static int write_auxtrace(int fd, struct perf_header *h, |
4025ea40 AH |
873 | struct perf_evlist *evlist __maybe_unused) |
874 | { | |
99fa2984 AH |
875 | struct perf_session *session; |
876 | int err; | |
877 | ||
878 | session = container_of(h, struct perf_session, header); | |
879 | ||
880 | err = auxtrace_index__write(fd, &session->auxtrace_index); | |
881 | if (err < 0) | |
882 | pr_err("Failed to write auxtrace index\n"); | |
883 | return err; | |
4025ea40 AH |
884 | } |
885 | ||
7e94cfcc NK |
886 | static void print_hostname(struct perf_header *ph, int fd __maybe_unused, |
887 | FILE *fp) | |
fbe96f29 | 888 | { |
7e94cfcc | 889 | fprintf(fp, "# hostname : %s\n", ph->env.hostname); |
fbe96f29 SE |
890 | } |
891 | ||
7e94cfcc NK |
892 | static void print_osrelease(struct perf_header *ph, int fd __maybe_unused, |
893 | FILE *fp) | |
fbe96f29 | 894 | { |
7e94cfcc | 895 | fprintf(fp, "# os release : %s\n", ph->env.os_release); |
fbe96f29 SE |
896 | } |
897 | ||
7e94cfcc | 898 | static void print_arch(struct perf_header *ph, int fd __maybe_unused, FILE *fp) |
fbe96f29 | 899 | { |
7e94cfcc | 900 | fprintf(fp, "# arch : %s\n", ph->env.arch); |
fbe96f29 SE |
901 | } |
902 | ||
7e94cfcc NK |
903 | static void print_cpudesc(struct perf_header *ph, int fd __maybe_unused, |
904 | FILE *fp) | |
fbe96f29 | 905 | { |
7e94cfcc | 906 | fprintf(fp, "# cpudesc : %s\n", ph->env.cpu_desc); |
fbe96f29 SE |
907 | } |
908 | ||
7e94cfcc NK |
909 | static void print_nrcpus(struct perf_header *ph, int fd __maybe_unused, |
910 | FILE *fp) | |
fbe96f29 | 911 | { |
7e94cfcc NK |
912 | fprintf(fp, "# nrcpus online : %u\n", ph->env.nr_cpus_online); |
913 | fprintf(fp, "# nrcpus avail : %u\n", ph->env.nr_cpus_avail); | |
fbe96f29 SE |
914 | } |
915 | ||
7e94cfcc NK |
916 | static void print_version(struct perf_header *ph, int fd __maybe_unused, |
917 | FILE *fp) | |
fbe96f29 | 918 | { |
7e94cfcc | 919 | fprintf(fp, "# perf version : %s\n", ph->env.version); |
fbe96f29 SE |
920 | } |
921 | ||
7e94cfcc NK |
922 | static void print_cmdline(struct perf_header *ph, int fd __maybe_unused, |
923 | FILE *fp) | |
fbe96f29 | 924 | { |
7e94cfcc | 925 | int nr, i; |
fbe96f29 | 926 | |
7e94cfcc | 927 | nr = ph->env.nr_cmdline; |
fbe96f29 SE |
928 | |
929 | fprintf(fp, "# cmdline : "); | |
930 | ||
768dd3f3 JO |
931 | for (i = 0; i < nr; i++) |
932 | fprintf(fp, "%s ", ph->env.cmdline_argv[i]); | |
fbe96f29 SE |
933 | fputc('\n', fp); |
934 | } | |
935 | ||
7e94cfcc NK |
936 | static void print_cpu_topology(struct perf_header *ph, int fd __maybe_unused, |
937 | FILE *fp) | |
fbe96f29 | 938 | { |
7e94cfcc | 939 | int nr, i; |
fbe96f29 SE |
940 | char *str; |
941 | ||
7e94cfcc NK |
942 | nr = ph->env.nr_sibling_cores; |
943 | str = ph->env.sibling_cores; | |
fbe96f29 SE |
944 | |
945 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 946 | fprintf(fp, "# sibling cores : %s\n", str); |
7e94cfcc | 947 | str += strlen(str) + 1; |
fbe96f29 SE |
948 | } |
949 | ||
7e94cfcc NK |
950 | nr = ph->env.nr_sibling_threads; |
951 | str = ph->env.sibling_threads; | |
fbe96f29 SE |
952 | |
953 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 954 | fprintf(fp, "# sibling threads : %s\n", str); |
7e94cfcc | 955 | str += strlen(str) + 1; |
fbe96f29 SE |
956 | } |
957 | } | |
958 | ||
4e1b9c67 | 959 | static void free_event_desc(struct perf_evsel *events) |
fbe96f29 | 960 | { |
4e1b9c67 RR |
961 | struct perf_evsel *evsel; |
962 | ||
963 | if (!events) | |
964 | return; | |
965 | ||
966 | for (evsel = events; evsel->attr.size; evsel++) { | |
74cf249d ACM |
967 | zfree(&evsel->name); |
968 | zfree(&evsel->id); | |
4e1b9c67 RR |
969 | } |
970 | ||
971 | free(events); | |
972 | } | |
973 | ||
974 | static struct perf_evsel * | |
975 | read_event_desc(struct perf_header *ph, int fd) | |
976 | { | |
977 | struct perf_evsel *evsel, *events = NULL; | |
978 | u64 *id; | |
fbe96f29 | 979 | void *buf = NULL; |
62db9068 SE |
980 | u32 nre, sz, nr, i, j; |
981 | ssize_t ret; | |
982 | size_t msz; | |
fbe96f29 SE |
983 | |
984 | /* number of events */ | |
5323f60c | 985 | ret = readn(fd, &nre, sizeof(nre)); |
fbe96f29 SE |
986 | if (ret != (ssize_t)sizeof(nre)) |
987 | goto error; | |
988 | ||
989 | if (ph->needs_swap) | |
990 | nre = bswap_32(nre); | |
991 | ||
5323f60c | 992 | ret = readn(fd, &sz, sizeof(sz)); |
fbe96f29 SE |
993 | if (ret != (ssize_t)sizeof(sz)) |
994 | goto error; | |
995 | ||
996 | if (ph->needs_swap) | |
997 | sz = bswap_32(sz); | |
998 | ||
62db9068 | 999 | /* buffer to hold on file attr struct */ |
fbe96f29 SE |
1000 | buf = malloc(sz); |
1001 | if (!buf) | |
1002 | goto error; | |
1003 | ||
4e1b9c67 RR |
1004 | /* the last event terminates with evsel->attr.size == 0: */ |
1005 | events = calloc(nre + 1, sizeof(*events)); | |
1006 | if (!events) | |
1007 | goto error; | |
1008 | ||
1009 | msz = sizeof(evsel->attr); | |
9fafd98f | 1010 | if (sz < msz) |
fbe96f29 SE |
1011 | msz = sz; |
1012 | ||
4e1b9c67 RR |
1013 | for (i = 0, evsel = events; i < nre; evsel++, i++) { |
1014 | evsel->idx = i; | |
fbe96f29 | 1015 | |
62db9068 SE |
1016 | /* |
1017 | * must read entire on-file attr struct to | |
1018 | * sync up with layout. | |
1019 | */ | |
5323f60c | 1020 | ret = readn(fd, buf, sz); |
fbe96f29 SE |
1021 | if (ret != (ssize_t)sz) |
1022 | goto error; | |
1023 | ||
1024 | if (ph->needs_swap) | |
1025 | perf_event__attr_swap(buf); | |
1026 | ||
4e1b9c67 | 1027 | memcpy(&evsel->attr, buf, msz); |
fbe96f29 | 1028 | |
5323f60c | 1029 | ret = readn(fd, &nr, sizeof(nr)); |
fbe96f29 SE |
1030 | if (ret != (ssize_t)sizeof(nr)) |
1031 | goto error; | |
1032 | ||
0807d2d8 | 1033 | if (ph->needs_swap) { |
fbe96f29 | 1034 | nr = bswap_32(nr); |
0807d2d8 ACM |
1035 | evsel->needs_swap = true; |
1036 | } | |
fbe96f29 | 1037 | |
4e1b9c67 RR |
1038 | evsel->name = do_read_string(fd, ph); |
1039 | ||
1040 | if (!nr) | |
1041 | continue; | |
1042 | ||
1043 | id = calloc(nr, sizeof(*id)); | |
1044 | if (!id) | |
1045 | goto error; | |
1046 | evsel->ids = nr; | |
1047 | evsel->id = id; | |
1048 | ||
1049 | for (j = 0 ; j < nr; j++) { | |
5323f60c | 1050 | ret = readn(fd, id, sizeof(*id)); |
4e1b9c67 RR |
1051 | if (ret != (ssize_t)sizeof(*id)) |
1052 | goto error; | |
1053 | if (ph->needs_swap) | |
1054 | *id = bswap_64(*id); | |
1055 | id++; | |
1056 | } | |
1057 | } | |
1058 | out: | |
04662523 | 1059 | free(buf); |
4e1b9c67 RR |
1060 | return events; |
1061 | error: | |
4cc97614 | 1062 | free_event_desc(events); |
4e1b9c67 RR |
1063 | events = NULL; |
1064 | goto out; | |
1065 | } | |
1066 | ||
2c5e8c52 PZ |
1067 | static int __desc_attr__fprintf(FILE *fp, const char *name, const char *val, |
1068 | void *priv __attribute__((unused))) | |
1069 | { | |
1070 | return fprintf(fp, ", %s = %s", name, val); | |
1071 | } | |
1072 | ||
4e1b9c67 RR |
1073 | static void print_event_desc(struct perf_header *ph, int fd, FILE *fp) |
1074 | { | |
1075 | struct perf_evsel *evsel, *events = read_event_desc(ph, fd); | |
1076 | u32 j; | |
1077 | u64 *id; | |
1078 | ||
1079 | if (!events) { | |
1080 | fprintf(fp, "# event desc: not available or unable to read\n"); | |
1081 | return; | |
1082 | } | |
1083 | ||
1084 | for (evsel = events; evsel->attr.size; evsel++) { | |
1085 | fprintf(fp, "# event : name = %s, ", evsel->name); | |
fbe96f29 | 1086 | |
4e1b9c67 | 1087 | if (evsel->ids) { |
fbe96f29 | 1088 | fprintf(fp, ", id = {"); |
4e1b9c67 RR |
1089 | for (j = 0, id = evsel->id; j < evsel->ids; j++, id++) { |
1090 | if (j) | |
1091 | fputc(',', fp); | |
1092 | fprintf(fp, " %"PRIu64, *id); | |
1093 | } | |
fbe96f29 | 1094 | fprintf(fp, " }"); |
4e1b9c67 | 1095 | } |
814c8c38 | 1096 | |
2c5e8c52 | 1097 | perf_event_attr__fprintf(fp, &evsel->attr, __desc_attr__fprintf, NULL); |
4e1b9c67 | 1098 | |
fbe96f29 SE |
1099 | fputc('\n', fp); |
1100 | } | |
4e1b9c67 RR |
1101 | |
1102 | free_event_desc(events); | |
fbe96f29 SE |
1103 | } |
1104 | ||
7e94cfcc | 1105 | static void print_total_mem(struct perf_header *ph, int fd __maybe_unused, |
1d037ca1 | 1106 | FILE *fp) |
fbe96f29 | 1107 | { |
7e94cfcc | 1108 | fprintf(fp, "# total memory : %Lu kB\n", ph->env.total_mem); |
fbe96f29 SE |
1109 | } |
1110 | ||
7e94cfcc | 1111 | static void print_numa_topology(struct perf_header *ph, int fd __maybe_unused, |
1d037ca1 | 1112 | FILE *fp) |
fbe96f29 | 1113 | { |
fbe96f29 | 1114 | u32 nr, c, i; |
7e94cfcc | 1115 | char *str, *tmp; |
fbe96f29 SE |
1116 | uint64_t mem_total, mem_free; |
1117 | ||
1118 | /* nr nodes */ | |
7e94cfcc NK |
1119 | nr = ph->env.nr_numa_nodes; |
1120 | str = ph->env.numa_nodes; | |
fbe96f29 SE |
1121 | |
1122 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 1123 | /* node number */ |
7e94cfcc NK |
1124 | c = strtoul(str, &tmp, 0); |
1125 | if (*tmp != ':') | |
fbe96f29 SE |
1126 | goto error; |
1127 | ||
7e94cfcc NK |
1128 | str = tmp + 1; |
1129 | mem_total = strtoull(str, &tmp, 0); | |
1130 | if (*tmp != ':') | |
fbe96f29 SE |
1131 | goto error; |
1132 | ||
7e94cfcc NK |
1133 | str = tmp + 1; |
1134 | mem_free = strtoull(str, &tmp, 0); | |
1135 | if (*tmp != ':') | |
fbe96f29 SE |
1136 | goto error; |
1137 | ||
fbe96f29 SE |
1138 | fprintf(fp, "# node%u meminfo : total = %"PRIu64" kB," |
1139 | " free = %"PRIu64" kB\n", | |
7e94cfcc | 1140 | c, mem_total, mem_free); |
fbe96f29 | 1141 | |
7e94cfcc | 1142 | str = tmp + 1; |
fbe96f29 | 1143 | fprintf(fp, "# node%u cpu list : %s\n", c, str); |
1234471e NK |
1144 | |
1145 | str += strlen(str) + 1; | |
fbe96f29 SE |
1146 | } |
1147 | return; | |
1148 | error: | |
1149 | fprintf(fp, "# numa topology : not available\n"); | |
1150 | } | |
1151 | ||
7e94cfcc | 1152 | static void print_cpuid(struct perf_header *ph, int fd __maybe_unused, FILE *fp) |
fbe96f29 | 1153 | { |
7e94cfcc | 1154 | fprintf(fp, "# cpuid : %s\n", ph->env.cpuid); |
fbe96f29 SE |
1155 | } |
1156 | ||
1d037ca1 | 1157 | static void print_branch_stack(struct perf_header *ph __maybe_unused, |
7e94cfcc | 1158 | int fd __maybe_unused, FILE *fp) |
330aa675 SE |
1159 | { |
1160 | fprintf(fp, "# contains samples with branch stack\n"); | |
1161 | } | |
1162 | ||
4025ea40 AH |
1163 | static void print_auxtrace(struct perf_header *ph __maybe_unused, |
1164 | int fd __maybe_unused, FILE *fp) | |
1165 | { | |
1166 | fprintf(fp, "# contains AUX area data (e.g. instruction trace)\n"); | |
1167 | } | |
1168 | ||
7e94cfcc NK |
1169 | static void print_pmu_mappings(struct perf_header *ph, int fd __maybe_unused, |
1170 | FILE *fp) | |
50a9667c RR |
1171 | { |
1172 | const char *delimiter = "# pmu mappings: "; | |
7e94cfcc | 1173 | char *str, *tmp; |
50a9667c RR |
1174 | u32 pmu_num; |
1175 | u32 type; | |
1176 | ||
7e94cfcc | 1177 | pmu_num = ph->env.nr_pmu_mappings; |
50a9667c RR |
1178 | if (!pmu_num) { |
1179 | fprintf(fp, "# pmu mappings: not available\n"); | |
1180 | return; | |
1181 | } | |
1182 | ||
7e94cfcc NK |
1183 | str = ph->env.pmu_mappings; |
1184 | ||
50a9667c | 1185 | while (pmu_num) { |
7e94cfcc NK |
1186 | type = strtoul(str, &tmp, 0); |
1187 | if (*tmp != ':') | |
1188 | goto error; | |
1189 | ||
1190 | str = tmp + 1; | |
1191 | fprintf(fp, "%s%s = %" PRIu32, delimiter, str, type); | |
be4a2ded | 1192 | |
50a9667c | 1193 | delimiter = ", "; |
7e94cfcc NK |
1194 | str += strlen(str) + 1; |
1195 | pmu_num--; | |
50a9667c RR |
1196 | } |
1197 | ||
1198 | fprintf(fp, "\n"); | |
1199 | ||
1200 | if (!pmu_num) | |
1201 | return; | |
1202 | error: | |
1203 | fprintf(fp, "# pmu mappings: unable to read\n"); | |
1204 | } | |
1205 | ||
a8bb559b NK |
1206 | static void print_group_desc(struct perf_header *ph, int fd __maybe_unused, |
1207 | FILE *fp) | |
1208 | { | |
1209 | struct perf_session *session; | |
1210 | struct perf_evsel *evsel; | |
1211 | u32 nr = 0; | |
1212 | ||
1213 | session = container_of(ph, struct perf_session, header); | |
1214 | ||
0050f7aa | 1215 | evlist__for_each(session->evlist, evsel) { |
a8bb559b NK |
1216 | if (perf_evsel__is_group_leader(evsel) && |
1217 | evsel->nr_members > 1) { | |
1218 | fprintf(fp, "# group: %s{%s", evsel->group_name ?: "", | |
1219 | perf_evsel__name(evsel)); | |
1220 | ||
1221 | nr = evsel->nr_members - 1; | |
1222 | } else if (nr) { | |
1223 | fprintf(fp, ",%s", perf_evsel__name(evsel)); | |
1224 | ||
1225 | if (--nr == 0) | |
1226 | fprintf(fp, "}\n"); | |
1227 | } | |
1228 | } | |
1229 | } | |
1230 | ||
08d95bd2 RR |
1231 | static int __event_process_build_id(struct build_id_event *bev, |
1232 | char *filename, | |
1233 | struct perf_session *session) | |
1234 | { | |
1235 | int err = -1; | |
08d95bd2 | 1236 | struct machine *machine; |
1f121b03 | 1237 | u16 cpumode; |
08d95bd2 RR |
1238 | struct dso *dso; |
1239 | enum dso_kernel_type dso_type; | |
1240 | ||
1241 | machine = perf_session__findnew_machine(session, bev->pid); | |
1242 | if (!machine) | |
1243 | goto out; | |
1244 | ||
1f121b03 | 1245 | cpumode = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
08d95bd2 | 1246 | |
1f121b03 | 1247 | switch (cpumode) { |
08d95bd2 RR |
1248 | case PERF_RECORD_MISC_KERNEL: |
1249 | dso_type = DSO_TYPE_KERNEL; | |
08d95bd2 RR |
1250 | break; |
1251 | case PERF_RECORD_MISC_GUEST_KERNEL: | |
1252 | dso_type = DSO_TYPE_GUEST_KERNEL; | |
08d95bd2 RR |
1253 | break; |
1254 | case PERF_RECORD_MISC_USER: | |
1255 | case PERF_RECORD_MISC_GUEST_USER: | |
1256 | dso_type = DSO_TYPE_USER; | |
08d95bd2 RR |
1257 | break; |
1258 | default: | |
1259 | goto out; | |
1260 | } | |
1261 | ||
aa7cc2ae | 1262 | dso = machine__findnew_dso(machine, filename); |
08d95bd2 RR |
1263 | if (dso != NULL) { |
1264 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; | |
1265 | ||
1266 | dso__set_build_id(dso, &bev->build_id); | |
1267 | ||
1f121b03 | 1268 | if (!is_kernel_module(filename, cpumode)) |
08d95bd2 RR |
1269 | dso->kernel = dso_type; |
1270 | ||
1271 | build_id__sprintf(dso->build_id, sizeof(dso->build_id), | |
1272 | sbuild_id); | |
1273 | pr_debug("build id event received for %s: %s\n", | |
1274 | dso->long_name, sbuild_id); | |
d3a7c489 | 1275 | dso__put(dso); |
08d95bd2 RR |
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 | ||
768dd3f3 | 1540 | static int process_cmdline(struct perf_file_section *section, |
3d7eb86b NK |
1541 | struct perf_header *ph, int fd, |
1542 | void *data __maybe_unused) | |
a1ae5655 | 1543 | { |
727ebd54 | 1544 | ssize_t ret; |
768dd3f3 JO |
1545 | char *str, *cmdline = NULL, **argv = NULL; |
1546 | u32 nr, i, len = 0; | |
a1ae5655 | 1547 | |
5323f60c | 1548 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1549 | if (ret != sizeof(nr)) |
1550 | return -1; | |
1551 | ||
1552 | if (ph->needs_swap) | |
1553 | nr = bswap_32(nr); | |
1554 | ||
1555 | ph->env.nr_cmdline = nr; | |
768dd3f3 JO |
1556 | |
1557 | cmdline = zalloc(section->size + nr + 1); | |
1558 | if (!cmdline) | |
1559 | return -1; | |
1560 | ||
1561 | argv = zalloc(sizeof(char *) * (nr + 1)); | |
1562 | if (!argv) | |
1563 | goto error; | |
a1ae5655 NK |
1564 | |
1565 | for (i = 0; i < nr; i++) { | |
1566 | str = do_read_string(fd, ph); | |
1567 | if (!str) | |
1568 | goto error; | |
1569 | ||
768dd3f3 JO |
1570 | argv[i] = cmdline + len; |
1571 | memcpy(argv[i], str, strlen(str) + 1); | |
1572 | len += strlen(str) + 1; | |
a1ae5655 NK |
1573 | free(str); |
1574 | } | |
768dd3f3 JO |
1575 | ph->env.cmdline = cmdline; |
1576 | ph->env.cmdline_argv = (const char **) argv; | |
a1ae5655 NK |
1577 | return 0; |
1578 | ||
1579 | error: | |
768dd3f3 JO |
1580 | free(argv); |
1581 | free(cmdline); | |
a1ae5655 NK |
1582 | return -1; |
1583 | } | |
1584 | ||
1585 | static int process_cpu_topology(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1586 | struct perf_header *ph, int fd, |
1587 | void *data __maybe_unused) | |
a1ae5655 | 1588 | { |
727ebd54 | 1589 | ssize_t ret; |
a1ae5655 NK |
1590 | u32 nr, i; |
1591 | char *str; | |
1592 | struct strbuf sb; | |
1593 | ||
5323f60c | 1594 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1595 | if (ret != sizeof(nr)) |
1596 | return -1; | |
1597 | ||
1598 | if (ph->needs_swap) | |
1599 | nr = bswap_32(nr); | |
1600 | ||
1601 | ph->env.nr_sibling_cores = nr; | |
1602 | strbuf_init(&sb, 128); | |
1603 | ||
1604 | for (i = 0; i < nr; i++) { | |
1605 | str = do_read_string(fd, ph); | |
1606 | if (!str) | |
1607 | goto error; | |
1608 | ||
1609 | /* include a NULL character at the end */ | |
1610 | strbuf_add(&sb, str, strlen(str) + 1); | |
1611 | free(str); | |
1612 | } | |
1613 | ph->env.sibling_cores = strbuf_detach(&sb, NULL); | |
1614 | ||
5323f60c | 1615 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1616 | if (ret != sizeof(nr)) |
1617 | return -1; | |
1618 | ||
1619 | if (ph->needs_swap) | |
1620 | nr = bswap_32(nr); | |
1621 | ||
1622 | ph->env.nr_sibling_threads = nr; | |
1623 | ||
1624 | for (i = 0; i < nr; i++) { | |
1625 | str = do_read_string(fd, ph); | |
1626 | if (!str) | |
1627 | goto error; | |
1628 | ||
1629 | /* include a NULL character at the end */ | |
1630 | strbuf_add(&sb, str, strlen(str) + 1); | |
1631 | free(str); | |
1632 | } | |
1633 | ph->env.sibling_threads = strbuf_detach(&sb, NULL); | |
1634 | return 0; | |
1635 | ||
1636 | error: | |
1637 | strbuf_release(&sb); | |
1638 | return -1; | |
1639 | } | |
1640 | ||
1641 | static int process_numa_topology(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1642 | struct perf_header *ph, int fd, |
1643 | void *data __maybe_unused) | |
a1ae5655 | 1644 | { |
727ebd54 | 1645 | ssize_t ret; |
a1ae5655 NK |
1646 | u32 nr, node, i; |
1647 | char *str; | |
1648 | uint64_t mem_total, mem_free; | |
1649 | struct strbuf sb; | |
1650 | ||
1651 | /* nr nodes */ | |
5323f60c | 1652 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1653 | if (ret != sizeof(nr)) |
1654 | goto error; | |
1655 | ||
1656 | if (ph->needs_swap) | |
1657 | nr = bswap_32(nr); | |
1658 | ||
1659 | ph->env.nr_numa_nodes = nr; | |
1660 | strbuf_init(&sb, 256); | |
1661 | ||
1662 | for (i = 0; i < nr; i++) { | |
1663 | /* node number */ | |
5323f60c | 1664 | ret = readn(fd, &node, sizeof(node)); |
a1ae5655 NK |
1665 | if (ret != sizeof(node)) |
1666 | goto error; | |
1667 | ||
5323f60c | 1668 | ret = readn(fd, &mem_total, sizeof(u64)); |
a1ae5655 NK |
1669 | if (ret != sizeof(u64)) |
1670 | goto error; | |
1671 | ||
5323f60c | 1672 | ret = readn(fd, &mem_free, sizeof(u64)); |
a1ae5655 NK |
1673 | if (ret != sizeof(u64)) |
1674 | goto error; | |
1675 | ||
1676 | if (ph->needs_swap) { | |
1677 | node = bswap_32(node); | |
1678 | mem_total = bswap_64(mem_total); | |
1679 | mem_free = bswap_64(mem_free); | |
1680 | } | |
1681 | ||
1682 | strbuf_addf(&sb, "%u:%"PRIu64":%"PRIu64":", | |
1683 | node, mem_total, mem_free); | |
1684 | ||
1685 | str = do_read_string(fd, ph); | |
1686 | if (!str) | |
1687 | goto error; | |
1688 | ||
1689 | /* include a NULL character at the end */ | |
1690 | strbuf_add(&sb, str, strlen(str) + 1); | |
1691 | free(str); | |
1692 | } | |
1693 | ph->env.numa_nodes = strbuf_detach(&sb, NULL); | |
1694 | return 0; | |
1695 | ||
1696 | error: | |
1697 | strbuf_release(&sb); | |
1698 | return -1; | |
1699 | } | |
1700 | ||
1701 | static int process_pmu_mappings(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1702 | struct perf_header *ph, int fd, |
1703 | void *data __maybe_unused) | |
a1ae5655 | 1704 | { |
727ebd54 | 1705 | ssize_t ret; |
a1ae5655 NK |
1706 | char *name; |
1707 | u32 pmu_num; | |
1708 | u32 type; | |
1709 | struct strbuf sb; | |
1710 | ||
5323f60c | 1711 | ret = readn(fd, &pmu_num, sizeof(pmu_num)); |
a1ae5655 NK |
1712 | if (ret != sizeof(pmu_num)) |
1713 | return -1; | |
1714 | ||
1715 | if (ph->needs_swap) | |
1716 | pmu_num = bswap_32(pmu_num); | |
1717 | ||
1718 | if (!pmu_num) { | |
1719 | pr_debug("pmu mappings not available\n"); | |
1720 | return 0; | |
1721 | } | |
1722 | ||
1723 | ph->env.nr_pmu_mappings = pmu_num; | |
1724 | strbuf_init(&sb, 128); | |
1725 | ||
1726 | while (pmu_num) { | |
5323f60c | 1727 | if (readn(fd, &type, sizeof(type)) != sizeof(type)) |
a1ae5655 NK |
1728 | goto error; |
1729 | if (ph->needs_swap) | |
1730 | type = bswap_32(type); | |
1731 | ||
1732 | name = do_read_string(fd, ph); | |
1733 | if (!name) | |
1734 | goto error; | |
1735 | ||
1736 | strbuf_addf(&sb, "%u:%s", type, name); | |
1737 | /* include a NULL character at the end */ | |
1738 | strbuf_add(&sb, "", 1); | |
1739 | ||
1740 | free(name); | |
1741 | pmu_num--; | |
1742 | } | |
1743 | ph->env.pmu_mappings = strbuf_detach(&sb, NULL); | |
1744 | return 0; | |
1745 | ||
1746 | error: | |
1747 | strbuf_release(&sb); | |
1748 | return -1; | |
1749 | } | |
1750 | ||
a8bb559b NK |
1751 | static int process_group_desc(struct perf_file_section *section __maybe_unused, |
1752 | struct perf_header *ph, int fd, | |
1753 | void *data __maybe_unused) | |
1754 | { | |
1755 | size_t ret = -1; | |
1756 | u32 i, nr, nr_groups; | |
1757 | struct perf_session *session; | |
1758 | struct perf_evsel *evsel, *leader = NULL; | |
1759 | struct group_desc { | |
1760 | char *name; | |
1761 | u32 leader_idx; | |
1762 | u32 nr_members; | |
1763 | } *desc; | |
1764 | ||
1765 | if (readn(fd, &nr_groups, sizeof(nr_groups)) != sizeof(nr_groups)) | |
1766 | return -1; | |
1767 | ||
1768 | if (ph->needs_swap) | |
1769 | nr_groups = bswap_32(nr_groups); | |
1770 | ||
1771 | ph->env.nr_groups = nr_groups; | |
1772 | if (!nr_groups) { | |
1773 | pr_debug("group desc not available\n"); | |
1774 | return 0; | |
1775 | } | |
1776 | ||
1777 | desc = calloc(nr_groups, sizeof(*desc)); | |
1778 | if (!desc) | |
1779 | return -1; | |
1780 | ||
1781 | for (i = 0; i < nr_groups; i++) { | |
1782 | desc[i].name = do_read_string(fd, ph); | |
1783 | if (!desc[i].name) | |
1784 | goto out_free; | |
1785 | ||
1786 | if (readn(fd, &desc[i].leader_idx, sizeof(u32)) != sizeof(u32)) | |
1787 | goto out_free; | |
1788 | ||
1789 | if (readn(fd, &desc[i].nr_members, sizeof(u32)) != sizeof(u32)) | |
1790 | goto out_free; | |
1791 | ||
1792 | if (ph->needs_swap) { | |
1793 | desc[i].leader_idx = bswap_32(desc[i].leader_idx); | |
1794 | desc[i].nr_members = bswap_32(desc[i].nr_members); | |
1795 | } | |
1796 | } | |
1797 | ||
1798 | /* | |
1799 | * Rebuild group relationship based on the group_desc | |
1800 | */ | |
1801 | session = container_of(ph, struct perf_session, header); | |
1802 | session->evlist->nr_groups = nr_groups; | |
1803 | ||
1804 | i = nr = 0; | |
0050f7aa | 1805 | evlist__for_each(session->evlist, evsel) { |
a8bb559b NK |
1806 | if (evsel->idx == (int) desc[i].leader_idx) { |
1807 | evsel->leader = evsel; | |
1808 | /* {anon_group} is a dummy name */ | |
210e812f | 1809 | if (strcmp(desc[i].name, "{anon_group}")) { |
a8bb559b | 1810 | evsel->group_name = desc[i].name; |
210e812f NK |
1811 | desc[i].name = NULL; |
1812 | } | |
a8bb559b NK |
1813 | evsel->nr_members = desc[i].nr_members; |
1814 | ||
1815 | if (i >= nr_groups || nr > 0) { | |
1816 | pr_debug("invalid group desc\n"); | |
1817 | goto out_free; | |
1818 | } | |
1819 | ||
1820 | leader = evsel; | |
1821 | nr = evsel->nr_members - 1; | |
1822 | i++; | |
1823 | } else if (nr) { | |
1824 | /* This is a group member */ | |
1825 | evsel->leader = leader; | |
1826 | ||
1827 | nr--; | |
1828 | } | |
1829 | } | |
1830 | ||
1831 | if (i != nr_groups || nr != 0) { | |
1832 | pr_debug("invalid group desc\n"); | |
1833 | goto out_free; | |
1834 | } | |
1835 | ||
1836 | ret = 0; | |
1837 | out_free: | |
50a2740b | 1838 | for (i = 0; i < nr_groups; i++) |
74cf249d | 1839 | zfree(&desc[i].name); |
a8bb559b NK |
1840 | free(desc); |
1841 | ||
1842 | return ret; | |
1843 | } | |
1844 | ||
99fa2984 AH |
1845 | static int process_auxtrace(struct perf_file_section *section, |
1846 | struct perf_header *ph, int fd, | |
1847 | void *data __maybe_unused) | |
1848 | { | |
1849 | struct perf_session *session; | |
1850 | int err; | |
1851 | ||
1852 | session = container_of(ph, struct perf_session, header); | |
1853 | ||
1854 | err = auxtrace_index__process(fd, section->size, session, | |
1855 | ph->needs_swap); | |
1856 | if (err < 0) | |
1857 | pr_err("Failed to process auxtrace index\n"); | |
1858 | return err; | |
1859 | } | |
1860 | ||
fbe96f29 SE |
1861 | struct feature_ops { |
1862 | int (*write)(int fd, struct perf_header *h, struct perf_evlist *evlist); | |
1863 | void (*print)(struct perf_header *h, int fd, FILE *fp); | |
f1c67db7 | 1864 | int (*process)(struct perf_file_section *section, |
3d7eb86b | 1865 | struct perf_header *h, int fd, void *data); |
fbe96f29 SE |
1866 | const char *name; |
1867 | bool full_only; | |
1868 | }; | |
1869 | ||
8cdfa78a RR |
1870 | #define FEAT_OPA(n, func) \ |
1871 | [n] = { .name = #n, .write = write_##func, .print = print_##func } | |
f1c67db7 RR |
1872 | #define FEAT_OPP(n, func) \ |
1873 | [n] = { .name = #n, .write = write_##func, .print = print_##func, \ | |
1874 | .process = process_##func } | |
8cdfa78a | 1875 | #define FEAT_OPF(n, func) \ |
f1c67db7 | 1876 | [n] = { .name = #n, .write = write_##func, .print = print_##func, \ |
a1ae5655 | 1877 | .process = process_##func, .full_only = true } |
8cdfa78a RR |
1878 | |
1879 | /* feature_ops not implemented: */ | |
2eeaaa09 SE |
1880 | #define print_tracing_data NULL |
1881 | #define print_build_id NULL | |
fbe96f29 SE |
1882 | |
1883 | static const struct feature_ops feat_ops[HEADER_LAST_FEATURE] = { | |
2eeaaa09 | 1884 | FEAT_OPP(HEADER_TRACING_DATA, tracing_data), |
f1c67db7 | 1885 | FEAT_OPP(HEADER_BUILD_ID, build_id), |
a1ae5655 NK |
1886 | FEAT_OPP(HEADER_HOSTNAME, hostname), |
1887 | FEAT_OPP(HEADER_OSRELEASE, osrelease), | |
1888 | FEAT_OPP(HEADER_VERSION, version), | |
1889 | FEAT_OPP(HEADER_ARCH, arch), | |
1890 | FEAT_OPP(HEADER_NRCPUS, nrcpus), | |
1891 | FEAT_OPP(HEADER_CPUDESC, cpudesc), | |
37e9d750 | 1892 | FEAT_OPP(HEADER_CPUID, cpuid), |
a1ae5655 | 1893 | FEAT_OPP(HEADER_TOTAL_MEM, total_mem), |
7c2f7afd | 1894 | FEAT_OPP(HEADER_EVENT_DESC, event_desc), |
a1ae5655 | 1895 | FEAT_OPP(HEADER_CMDLINE, cmdline), |
8cdfa78a RR |
1896 | FEAT_OPF(HEADER_CPU_TOPOLOGY, cpu_topology), |
1897 | FEAT_OPF(HEADER_NUMA_TOPOLOGY, numa_topology), | |
330aa675 | 1898 | FEAT_OPA(HEADER_BRANCH_STACK, branch_stack), |
a1ae5655 | 1899 | FEAT_OPP(HEADER_PMU_MAPPINGS, pmu_mappings), |
a8bb559b | 1900 | FEAT_OPP(HEADER_GROUP_DESC, group_desc), |
99fa2984 | 1901 | FEAT_OPP(HEADER_AUXTRACE, auxtrace), |
fbe96f29 SE |
1902 | }; |
1903 | ||
1904 | struct header_print_data { | |
1905 | FILE *fp; | |
1906 | bool full; /* extended list of headers */ | |
1907 | }; | |
1908 | ||
1909 | static int perf_file_section__fprintf_info(struct perf_file_section *section, | |
1910 | struct perf_header *ph, | |
1911 | int feat, int fd, void *data) | |
1912 | { | |
1913 | struct header_print_data *hd = data; | |
1914 | ||
1915 | if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) { | |
1916 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " | |
1917 | "%d, continuing...\n", section->offset, feat); | |
1918 | return 0; | |
1919 | } | |
b1e5a9be | 1920 | if (feat >= HEADER_LAST_FEATURE) { |
fbe96f29 | 1921 | pr_warning("unknown feature %d\n", feat); |
f7a8a133 | 1922 | return 0; |
fbe96f29 SE |
1923 | } |
1924 | if (!feat_ops[feat].print) | |
1925 | return 0; | |
1926 | ||
1927 | if (!feat_ops[feat].full_only || hd->full) | |
1928 | feat_ops[feat].print(ph, fd, hd->fp); | |
1929 | else | |
1930 | fprintf(hd->fp, "# %s info available, use -I to display\n", | |
1931 | feat_ops[feat].name); | |
1932 | ||
1933 | return 0; | |
1934 | } | |
1935 | ||
1936 | int perf_header__fprintf_info(struct perf_session *session, FILE *fp, bool full) | |
1937 | { | |
1938 | struct header_print_data hd; | |
1939 | struct perf_header *header = &session->header; | |
cc9784bd | 1940 | int fd = perf_data_file__fd(session->file); |
fbe96f29 SE |
1941 | hd.fp = fp; |
1942 | hd.full = full; | |
1943 | ||
1944 | perf_header__process_sections(header, fd, &hd, | |
1945 | perf_file_section__fprintf_info); | |
1946 | return 0; | |
1947 | } | |
1948 | ||
fbe96f29 SE |
1949 | static int do_write_feat(int fd, struct perf_header *h, int type, |
1950 | struct perf_file_section **p, | |
1951 | struct perf_evlist *evlist) | |
1952 | { | |
1953 | int err; | |
1954 | int ret = 0; | |
1955 | ||
1956 | if (perf_header__has_feat(h, type)) { | |
b1e5a9be RR |
1957 | if (!feat_ops[type].write) |
1958 | return -1; | |
fbe96f29 SE |
1959 | |
1960 | (*p)->offset = lseek(fd, 0, SEEK_CUR); | |
1961 | ||
1962 | err = feat_ops[type].write(fd, h, evlist); | |
1963 | if (err < 0) { | |
1964 | pr_debug("failed to write feature %d\n", type); | |
1965 | ||
1966 | /* undo anything written */ | |
1967 | lseek(fd, (*p)->offset, SEEK_SET); | |
1968 | ||
1969 | return -1; | |
1970 | } | |
1971 | (*p)->size = lseek(fd, 0, SEEK_CUR) - (*p)->offset; | |
1972 | (*p)++; | |
1973 | } | |
1974 | return ret; | |
1975 | } | |
1976 | ||
1c0b04d1 | 1977 | static int perf_header__adds_write(struct perf_header *header, |
361c99a6 | 1978 | struct perf_evlist *evlist, int fd) |
2ba08250 | 1979 | { |
9e827dd0 | 1980 | int nr_sections; |
fbe96f29 | 1981 | struct perf_file_section *feat_sec, *p; |
9e827dd0 FW |
1982 | int sec_size; |
1983 | u64 sec_start; | |
b1e5a9be | 1984 | int feat; |
fbe96f29 | 1985 | int err; |
9e827dd0 | 1986 | |
1c0b04d1 | 1987 | nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS); |
9e827dd0 | 1988 | if (!nr_sections) |
d5eed904 | 1989 | return 0; |
9e827dd0 | 1990 | |
91b98804 | 1991 | feat_sec = p = calloc(nr_sections, sizeof(*feat_sec)); |
d5eed904 ACM |
1992 | if (feat_sec == NULL) |
1993 | return -ENOMEM; | |
9e827dd0 FW |
1994 | |
1995 | sec_size = sizeof(*feat_sec) * nr_sections; | |
1996 | ||
8d541e97 | 1997 | sec_start = header->feat_offset; |
f887f301 | 1998 | lseek(fd, sec_start + sec_size, SEEK_SET); |
2ba08250 | 1999 | |
b1e5a9be RR |
2000 | for_each_set_bit(feat, header->adds_features, HEADER_FEAT_BITS) { |
2001 | if (do_write_feat(fd, header, feat, &p, evlist)) | |
2002 | perf_header__clear_feat(header, feat); | |
2003 | } | |
9e827dd0 | 2004 | |
f887f301 | 2005 | lseek(fd, sec_start, SEEK_SET); |
fbe96f29 SE |
2006 | /* |
2007 | * may write more than needed due to dropped feature, but | |
2008 | * this is okay, reader will skip the mising entries | |
2009 | */ | |
d5eed904 ACM |
2010 | err = do_write(fd, feat_sec, sec_size); |
2011 | if (err < 0) | |
2012 | pr_debug("failed to write feature section\n"); | |
9e827dd0 | 2013 | free(feat_sec); |
d5eed904 | 2014 | return err; |
9e827dd0 | 2015 | } |
2ba08250 | 2016 | |
8dc58101 TZ |
2017 | int perf_header__write_pipe(int fd) |
2018 | { | |
2019 | struct perf_pipe_file_header f_header; | |
2020 | int err; | |
2021 | ||
2022 | f_header = (struct perf_pipe_file_header){ | |
2023 | .magic = PERF_MAGIC, | |
2024 | .size = sizeof(f_header), | |
2025 | }; | |
2026 | ||
2027 | err = do_write(fd, &f_header, sizeof(f_header)); | |
2028 | if (err < 0) { | |
2029 | pr_debug("failed to write perf pipe header\n"); | |
2030 | return err; | |
2031 | } | |
2032 | ||
2033 | return 0; | |
2034 | } | |
2035 | ||
a91e5431 ACM |
2036 | int perf_session__write_header(struct perf_session *session, |
2037 | struct perf_evlist *evlist, | |
2038 | int fd, bool at_exit) | |
7c6a1c65 PZ |
2039 | { |
2040 | struct perf_file_header f_header; | |
2041 | struct perf_file_attr f_attr; | |
1c0b04d1 | 2042 | struct perf_header *header = &session->header; |
563aecb2 | 2043 | struct perf_evsel *evsel; |
944d62ba | 2044 | u64 attr_offset; |
a91e5431 | 2045 | int err; |
7c6a1c65 PZ |
2046 | |
2047 | lseek(fd, sizeof(f_header), SEEK_SET); | |
2048 | ||
0050f7aa | 2049 | evlist__for_each(session->evlist, evsel) { |
6606f873 RR |
2050 | evsel->id_offset = lseek(fd, 0, SEEK_CUR); |
2051 | err = do_write(fd, evsel->id, evsel->ids * sizeof(u64)); | |
d5eed904 ACM |
2052 | if (err < 0) { |
2053 | pr_debug("failed to write perf header\n"); | |
2054 | return err; | |
2055 | } | |
7c6a1c65 PZ |
2056 | } |
2057 | ||
944d62ba | 2058 | attr_offset = lseek(fd, 0, SEEK_CUR); |
7c6a1c65 | 2059 | |
0050f7aa | 2060 | evlist__for_each(evlist, evsel) { |
7c6a1c65 | 2061 | f_attr = (struct perf_file_attr){ |
6606f873 | 2062 | .attr = evsel->attr, |
7c6a1c65 | 2063 | .ids = { |
6606f873 RR |
2064 | .offset = evsel->id_offset, |
2065 | .size = evsel->ids * sizeof(u64), | |
7c6a1c65 PZ |
2066 | } |
2067 | }; | |
d5eed904 ACM |
2068 | err = do_write(fd, &f_attr, sizeof(f_attr)); |
2069 | if (err < 0) { | |
2070 | pr_debug("failed to write perf header attribute\n"); | |
2071 | return err; | |
2072 | } | |
7c6a1c65 PZ |
2073 | } |
2074 | ||
d645c442 AH |
2075 | if (!header->data_offset) |
2076 | header->data_offset = lseek(fd, 0, SEEK_CUR); | |
8d541e97 | 2077 | header->feat_offset = header->data_offset + header->data_size; |
7c6a1c65 | 2078 | |
d5eed904 | 2079 | if (at_exit) { |
1c0b04d1 | 2080 | err = perf_header__adds_write(header, evlist, fd); |
d5eed904 ACM |
2081 | if (err < 0) |
2082 | return err; | |
2083 | } | |
9e827dd0 | 2084 | |
7c6a1c65 PZ |
2085 | f_header = (struct perf_file_header){ |
2086 | .magic = PERF_MAGIC, | |
2087 | .size = sizeof(f_header), | |
2088 | .attr_size = sizeof(f_attr), | |
2089 | .attrs = { | |
944d62ba | 2090 | .offset = attr_offset, |
a91e5431 | 2091 | .size = evlist->nr_entries * sizeof(f_attr), |
7c6a1c65 PZ |
2092 | }, |
2093 | .data = { | |
1c0b04d1 ACM |
2094 | .offset = header->data_offset, |
2095 | .size = header->data_size, | |
7c6a1c65 | 2096 | }, |
44b3c578 | 2097 | /* event_types is ignored, store zeros */ |
7c6a1c65 PZ |
2098 | }; |
2099 | ||
1c0b04d1 | 2100 | memcpy(&f_header.adds_features, &header->adds_features, sizeof(header->adds_features)); |
2ba08250 | 2101 | |
7c6a1c65 | 2102 | lseek(fd, 0, SEEK_SET); |
d5eed904 ACM |
2103 | err = do_write(fd, &f_header, sizeof(f_header)); |
2104 | if (err < 0) { | |
2105 | pr_debug("failed to write perf header\n"); | |
2106 | return err; | |
2107 | } | |
1c0b04d1 | 2108 | lseek(fd, header->data_offset + header->data_size, SEEK_SET); |
7c6a1c65 | 2109 | |
d5eed904 | 2110 | return 0; |
7c6a1c65 PZ |
2111 | } |
2112 | ||
1c0b04d1 | 2113 | static int perf_header__getbuffer64(struct perf_header *header, |
ba21594c ACM |
2114 | int fd, void *buf, size_t size) |
2115 | { | |
1e7972cc | 2116 | if (readn(fd, buf, size) <= 0) |
ba21594c ACM |
2117 | return -1; |
2118 | ||
1c0b04d1 | 2119 | if (header->needs_swap) |
ba21594c ACM |
2120 | mem_bswap_64(buf, size); |
2121 | ||
2122 | return 0; | |
2123 | } | |
2124 | ||
1c0b04d1 | 2125 | int perf_header__process_sections(struct perf_header *header, int fd, |
fbe96f29 | 2126 | void *data, |
1c0b04d1 | 2127 | int (*process)(struct perf_file_section *section, |
b1e5a9be RR |
2128 | struct perf_header *ph, |
2129 | int feat, int fd, void *data)) | |
2ba08250 | 2130 | { |
b1e5a9be | 2131 | struct perf_file_section *feat_sec, *sec; |
9e827dd0 FW |
2132 | int nr_sections; |
2133 | int sec_size; | |
b1e5a9be RR |
2134 | int feat; |
2135 | int err; | |
9e827dd0 | 2136 | |
1c0b04d1 | 2137 | nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS); |
9e827dd0 | 2138 | if (!nr_sections) |
37562eac | 2139 | return 0; |
9e827dd0 | 2140 | |
91b98804 | 2141 | feat_sec = sec = calloc(nr_sections, sizeof(*feat_sec)); |
9e827dd0 | 2142 | if (!feat_sec) |
37562eac | 2143 | return -1; |
9e827dd0 FW |
2144 | |
2145 | sec_size = sizeof(*feat_sec) * nr_sections; | |
2146 | ||
8d541e97 | 2147 | lseek(fd, header->feat_offset, SEEK_SET); |
9e827dd0 | 2148 | |
b1e5a9be RR |
2149 | err = perf_header__getbuffer64(header, fd, feat_sec, sec_size); |
2150 | if (err < 0) | |
769885f3 | 2151 | goto out_free; |
9e827dd0 | 2152 | |
b1e5a9be RR |
2153 | for_each_set_bit(feat, header->adds_features, HEADER_LAST_FEATURE) { |
2154 | err = process(sec++, header, feat, fd, data); | |
2155 | if (err < 0) | |
2156 | goto out_free; | |
2ba08250 | 2157 | } |
b1e5a9be | 2158 | err = 0; |
769885f3 | 2159 | out_free: |
37562eac ACM |
2160 | free(feat_sec); |
2161 | return err; | |
769885f3 | 2162 | } |
4778d2e4 | 2163 | |
114382a0 SE |
2164 | static const int attr_file_abi_sizes[] = { |
2165 | [0] = PERF_ATTR_SIZE_VER0, | |
2166 | [1] = PERF_ATTR_SIZE_VER1, | |
239cc478 | 2167 | [2] = PERF_ATTR_SIZE_VER2, |
0f6a3015 | 2168 | [3] = PERF_ATTR_SIZE_VER3, |
6a21c0b5 | 2169 | [4] = PERF_ATTR_SIZE_VER4, |
114382a0 SE |
2170 | 0, |
2171 | }; | |
2172 | ||
2173 | /* | |
2174 | * In the legacy file format, the magic number is not used to encode endianness. | |
2175 | * hdr_sz was used to encode endianness. But given that hdr_sz can vary based | |
2176 | * on ABI revisions, we need to try all combinations for all endianness to | |
2177 | * detect the endianness. | |
2178 | */ | |
2179 | static int try_all_file_abis(uint64_t hdr_sz, struct perf_header *ph) | |
73323f54 | 2180 | { |
114382a0 SE |
2181 | uint64_t ref_size, attr_size; |
2182 | int i; | |
73323f54 | 2183 | |
114382a0 SE |
2184 | for (i = 0 ; attr_file_abi_sizes[i]; i++) { |
2185 | ref_size = attr_file_abi_sizes[i] | |
2186 | + sizeof(struct perf_file_section); | |
2187 | if (hdr_sz != ref_size) { | |
2188 | attr_size = bswap_64(hdr_sz); | |
2189 | if (attr_size != ref_size) | |
2190 | continue; | |
73323f54 | 2191 | |
114382a0 SE |
2192 | ph->needs_swap = true; |
2193 | } | |
2194 | pr_debug("ABI%d perf.data file detected, need_swap=%d\n", | |
2195 | i, | |
2196 | ph->needs_swap); | |
2197 | return 0; | |
2198 | } | |
2199 | /* could not determine endianness */ | |
2200 | return -1; | |
2201 | } | |
73323f54 | 2202 | |
114382a0 SE |
2203 | #define PERF_PIPE_HDR_VER0 16 |
2204 | ||
2205 | static const size_t attr_pipe_abi_sizes[] = { | |
2206 | [0] = PERF_PIPE_HDR_VER0, | |
2207 | 0, | |
2208 | }; | |
2209 | ||
2210 | /* | |
2211 | * In the legacy pipe format, there is an implicit assumption that endiannesss | |
2212 | * between host recording the samples, and host parsing the samples is the | |
2213 | * same. This is not always the case given that the pipe output may always be | |
2214 | * redirected into a file and analyzed on a different machine with possibly a | |
2215 | * different endianness and perf_event ABI revsions in the perf tool itself. | |
2216 | */ | |
2217 | static int try_all_pipe_abis(uint64_t hdr_sz, struct perf_header *ph) | |
2218 | { | |
2219 | u64 attr_size; | |
2220 | int i; | |
2221 | ||
2222 | for (i = 0 ; attr_pipe_abi_sizes[i]; i++) { | |
2223 | if (hdr_sz != attr_pipe_abi_sizes[i]) { | |
2224 | attr_size = bswap_64(hdr_sz); | |
2225 | if (attr_size != hdr_sz) | |
2226 | continue; | |
73323f54 SE |
2227 | |
2228 | ph->needs_swap = true; | |
2229 | } | |
114382a0 | 2230 | pr_debug("Pipe ABI%d perf.data file detected\n", i); |
73323f54 SE |
2231 | return 0; |
2232 | } | |
114382a0 SE |
2233 | return -1; |
2234 | } | |
2235 | ||
e84ba4e2 FT |
2236 | bool is_perf_magic(u64 magic) |
2237 | { | |
2238 | if (!memcmp(&magic, __perf_magic1, sizeof(magic)) | |
2239 | || magic == __perf_magic2 | |
2240 | || magic == __perf_magic2_sw) | |
2241 | return true; | |
2242 | ||
2243 | return false; | |
2244 | } | |
2245 | ||
114382a0 SE |
2246 | static int check_magic_endian(u64 magic, uint64_t hdr_sz, |
2247 | bool is_pipe, struct perf_header *ph) | |
2248 | { | |
2249 | int ret; | |
2250 | ||
2251 | /* check for legacy format */ | |
2252 | ret = memcmp(&magic, __perf_magic1, sizeof(magic)); | |
2253 | if (ret == 0) { | |
2a08c3ec | 2254 | ph->version = PERF_HEADER_VERSION_1; |
114382a0 SE |
2255 | pr_debug("legacy perf.data format\n"); |
2256 | if (is_pipe) | |
2257 | return try_all_pipe_abis(hdr_sz, ph); | |
2258 | ||
2259 | return try_all_file_abis(hdr_sz, ph); | |
2260 | } | |
2261 | /* | |
2262 | * the new magic number serves two purposes: | |
2263 | * - unique number to identify actual perf.data files | |
2264 | * - encode endianness of file | |
2265 | */ | |
f7913971 | 2266 | ph->version = PERF_HEADER_VERSION_2; |
73323f54 | 2267 | |
114382a0 SE |
2268 | /* check magic number with one endianness */ |
2269 | if (magic == __perf_magic2) | |
73323f54 SE |
2270 | return 0; |
2271 | ||
114382a0 SE |
2272 | /* check magic number with opposite endianness */ |
2273 | if (magic != __perf_magic2_sw) | |
73323f54 SE |
2274 | return -1; |
2275 | ||
2276 | ph->needs_swap = true; | |
2277 | ||
2278 | return 0; | |
2279 | } | |
2280 | ||
1c0b04d1 | 2281 | int perf_file_header__read(struct perf_file_header *header, |
37562eac ACM |
2282 | struct perf_header *ph, int fd) |
2283 | { | |
727ebd54 | 2284 | ssize_t ret; |
73323f54 | 2285 | |
37562eac | 2286 | lseek(fd, 0, SEEK_SET); |
37562eac | 2287 | |
73323f54 SE |
2288 | ret = readn(fd, header, sizeof(*header)); |
2289 | if (ret <= 0) | |
37562eac ACM |
2290 | return -1; |
2291 | ||
114382a0 SE |
2292 | if (check_magic_endian(header->magic, |
2293 | header->attr_size, false, ph) < 0) { | |
2294 | pr_debug("magic/endian check failed\n"); | |
73323f54 | 2295 | return -1; |
114382a0 | 2296 | } |
ba21594c | 2297 | |
73323f54 | 2298 | if (ph->needs_swap) { |
1c0b04d1 | 2299 | mem_bswap_64(header, offsetof(struct perf_file_header, |
73323f54 | 2300 | adds_features)); |
ba21594c ACM |
2301 | } |
2302 | ||
1c0b04d1 | 2303 | if (header->size != sizeof(*header)) { |
37562eac | 2304 | /* Support the previous format */ |
1c0b04d1 ACM |
2305 | if (header->size == offsetof(typeof(*header), adds_features)) |
2306 | bitmap_zero(header->adds_features, HEADER_FEAT_BITS); | |
37562eac ACM |
2307 | else |
2308 | return -1; | |
d327fa43 | 2309 | } else if (ph->needs_swap) { |
d327fa43 DA |
2310 | /* |
2311 | * feature bitmap is declared as an array of unsigned longs -- | |
2312 | * not good since its size can differ between the host that | |
2313 | * generated the data file and the host analyzing the file. | |
2314 | * | |
2315 | * We need to handle endianness, but we don't know the size of | |
2316 | * the unsigned long where the file was generated. Take a best | |
2317 | * guess at determining it: try 64-bit swap first (ie., file | |
2318 | * created on a 64-bit host), and check if the hostname feature | |
2319 | * bit is set (this feature bit is forced on as of fbe96f2). | |
2320 | * If the bit is not, undo the 64-bit swap and try a 32-bit | |
2321 | * swap. If the hostname bit is still not set (e.g., older data | |
2322 | * file), punt and fallback to the original behavior -- | |
2323 | * clearing all feature bits and setting buildid. | |
2324 | */ | |
80c0120a DA |
2325 | mem_bswap_64(&header->adds_features, |
2326 | BITS_TO_U64(HEADER_FEAT_BITS)); | |
d327fa43 DA |
2327 | |
2328 | if (!test_bit(HEADER_HOSTNAME, header->adds_features)) { | |
80c0120a DA |
2329 | /* unswap as u64 */ |
2330 | mem_bswap_64(&header->adds_features, | |
2331 | BITS_TO_U64(HEADER_FEAT_BITS)); | |
2332 | ||
2333 | /* unswap as u32 */ | |
2334 | mem_bswap_32(&header->adds_features, | |
2335 | BITS_TO_U32(HEADER_FEAT_BITS)); | |
d327fa43 DA |
2336 | } |
2337 | ||
2338 | if (!test_bit(HEADER_HOSTNAME, header->adds_features)) { | |
2339 | bitmap_zero(header->adds_features, HEADER_FEAT_BITS); | |
2340 | set_bit(HEADER_BUILD_ID, header->adds_features); | |
2341 | } | |
4778d2e4 | 2342 | } |
9e827dd0 | 2343 | |
1c0b04d1 | 2344 | memcpy(&ph->adds_features, &header->adds_features, |
ba21594c | 2345 | sizeof(ph->adds_features)); |
37562eac | 2346 | |
1c0b04d1 ACM |
2347 | ph->data_offset = header->data.offset; |
2348 | ph->data_size = header->data.size; | |
8d541e97 | 2349 | ph->feat_offset = header->data.offset + header->data.size; |
37562eac ACM |
2350 | return 0; |
2351 | } | |
2352 | ||
1c0b04d1 | 2353 | static int perf_file_section__process(struct perf_file_section *section, |
ba21594c | 2354 | struct perf_header *ph, |
da378962 | 2355 | int feat, int fd, void *data) |
37562eac | 2356 | { |
1c0b04d1 | 2357 | if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) { |
9486aa38 | 2358 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " |
1c0b04d1 | 2359 | "%d, continuing...\n", section->offset, feat); |
37562eac ACM |
2360 | return 0; |
2361 | } | |
2362 | ||
b1e5a9be RR |
2363 | if (feat >= HEADER_LAST_FEATURE) { |
2364 | pr_debug("unknown feature %d, continuing...\n", feat); | |
2365 | return 0; | |
2366 | } | |
2367 | ||
f1c67db7 RR |
2368 | if (!feat_ops[feat].process) |
2369 | return 0; | |
37562eac | 2370 | |
3d7eb86b | 2371 | return feat_ops[feat].process(section, ph, fd, data); |
37562eac | 2372 | } |
2ba08250 | 2373 | |
1c0b04d1 | 2374 | static int perf_file_header__read_pipe(struct perf_pipe_file_header *header, |
454c407e TZ |
2375 | struct perf_header *ph, int fd, |
2376 | bool repipe) | |
7c6a1c65 | 2377 | { |
727ebd54 | 2378 | ssize_t ret; |
73323f54 SE |
2379 | |
2380 | ret = readn(fd, header, sizeof(*header)); | |
2381 | if (ret <= 0) | |
2382 | return -1; | |
2383 | ||
114382a0 SE |
2384 | if (check_magic_endian(header->magic, header->size, true, ph) < 0) { |
2385 | pr_debug("endian/magic failed\n"); | |
8dc58101 | 2386 | return -1; |
114382a0 SE |
2387 | } |
2388 | ||
2389 | if (ph->needs_swap) | |
2390 | header->size = bswap_64(header->size); | |
8dc58101 | 2391 | |
1c0b04d1 | 2392 | if (repipe && do_write(STDOUT_FILENO, header, sizeof(*header)) < 0) |
454c407e TZ |
2393 | return -1; |
2394 | ||
8dc58101 TZ |
2395 | return 0; |
2396 | } | |
2397 | ||
d4339569 | 2398 | static int perf_header__read_pipe(struct perf_session *session) |
8dc58101 | 2399 | { |
1c0b04d1 | 2400 | struct perf_header *header = &session->header; |
8dc58101 TZ |
2401 | struct perf_pipe_file_header f_header; |
2402 | ||
cc9784bd JO |
2403 | if (perf_file_header__read_pipe(&f_header, header, |
2404 | perf_data_file__fd(session->file), | |
454c407e | 2405 | session->repipe) < 0) { |
8dc58101 TZ |
2406 | pr_debug("incompatible file format\n"); |
2407 | return -EINVAL; | |
2408 | } | |
2409 | ||
8dc58101 TZ |
2410 | return 0; |
2411 | } | |
2412 | ||
69996df4 SE |
2413 | static int read_attr(int fd, struct perf_header *ph, |
2414 | struct perf_file_attr *f_attr) | |
2415 | { | |
2416 | struct perf_event_attr *attr = &f_attr->attr; | |
2417 | size_t sz, left; | |
2418 | size_t our_sz = sizeof(f_attr->attr); | |
727ebd54 | 2419 | ssize_t ret; |
69996df4 SE |
2420 | |
2421 | memset(f_attr, 0, sizeof(*f_attr)); | |
2422 | ||
2423 | /* read minimal guaranteed structure */ | |
2424 | ret = readn(fd, attr, PERF_ATTR_SIZE_VER0); | |
2425 | if (ret <= 0) { | |
2426 | pr_debug("cannot read %d bytes of header attr\n", | |
2427 | PERF_ATTR_SIZE_VER0); | |
2428 | return -1; | |
2429 | } | |
2430 | ||
2431 | /* on file perf_event_attr size */ | |
2432 | sz = attr->size; | |
114382a0 | 2433 | |
69996df4 SE |
2434 | if (ph->needs_swap) |
2435 | sz = bswap_32(sz); | |
2436 | ||
2437 | if (sz == 0) { | |
2438 | /* assume ABI0 */ | |
2439 | sz = PERF_ATTR_SIZE_VER0; | |
2440 | } else if (sz > our_sz) { | |
2441 | pr_debug("file uses a more recent and unsupported ABI" | |
2442 | " (%zu bytes extra)\n", sz - our_sz); | |
2443 | return -1; | |
2444 | } | |
2445 | /* what we have not yet read and that we know about */ | |
2446 | left = sz - PERF_ATTR_SIZE_VER0; | |
2447 | if (left) { | |
2448 | void *ptr = attr; | |
2449 | ptr += PERF_ATTR_SIZE_VER0; | |
2450 | ||
2451 | ret = readn(fd, ptr, left); | |
2452 | } | |
2453 | /* read perf_file_section, ids are read in caller */ | |
2454 | ret = readn(fd, &f_attr->ids, sizeof(f_attr->ids)); | |
2455 | ||
2456 | return ret <= 0 ? -1 : 0; | |
2457 | } | |
2458 | ||
831394bd NK |
2459 | static int perf_evsel__prepare_tracepoint_event(struct perf_evsel *evsel, |
2460 | struct pevent *pevent) | |
cb9dd49e | 2461 | { |
831394bd | 2462 | struct event_format *event; |
cb9dd49e ACM |
2463 | char bf[128]; |
2464 | ||
831394bd NK |
2465 | /* already prepared */ |
2466 | if (evsel->tp_format) | |
2467 | return 0; | |
2468 | ||
3dce2ce3 NK |
2469 | if (pevent == NULL) { |
2470 | pr_debug("broken or missing trace data\n"); | |
2471 | return -1; | |
2472 | } | |
2473 | ||
831394bd | 2474 | event = pevent_find_event(pevent, evsel->attr.config); |
cb9dd49e ACM |
2475 | if (event == NULL) |
2476 | return -1; | |
2477 | ||
831394bd NK |
2478 | if (!evsel->name) { |
2479 | snprintf(bf, sizeof(bf), "%s:%s", event->system, event->name); | |
2480 | evsel->name = strdup(bf); | |
2481 | if (evsel->name == NULL) | |
2482 | return -1; | |
2483 | } | |
cb9dd49e | 2484 | |
fcf65bf1 | 2485 | evsel->tp_format = event; |
cb9dd49e ACM |
2486 | return 0; |
2487 | } | |
2488 | ||
831394bd NK |
2489 | static int perf_evlist__prepare_tracepoint_events(struct perf_evlist *evlist, |
2490 | struct pevent *pevent) | |
cb9dd49e ACM |
2491 | { |
2492 | struct perf_evsel *pos; | |
2493 | ||
0050f7aa | 2494 | evlist__for_each(evlist, pos) { |
831394bd NK |
2495 | if (pos->attr.type == PERF_TYPE_TRACEPOINT && |
2496 | perf_evsel__prepare_tracepoint_event(pos, pevent)) | |
cb9dd49e ACM |
2497 | return -1; |
2498 | } | |
2499 | ||
2500 | return 0; | |
2501 | } | |
2502 | ||
d4339569 | 2503 | int perf_session__read_header(struct perf_session *session) |
8dc58101 | 2504 | { |
cc9784bd | 2505 | struct perf_data_file *file = session->file; |
1c0b04d1 | 2506 | struct perf_header *header = &session->header; |
ba21594c | 2507 | struct perf_file_header f_header; |
7c6a1c65 PZ |
2508 | struct perf_file_attr f_attr; |
2509 | u64 f_id; | |
7c6a1c65 | 2510 | int nr_attrs, nr_ids, i, j; |
cc9784bd | 2511 | int fd = perf_data_file__fd(file); |
7c6a1c65 | 2512 | |
334fe7a3 | 2513 | session->evlist = perf_evlist__new(); |
a91e5431 ACM |
2514 | if (session->evlist == NULL) |
2515 | return -ENOMEM; | |
2516 | ||
cc9784bd | 2517 | if (perf_data_file__is_pipe(file)) |
d4339569 | 2518 | return perf_header__read_pipe(session); |
8dc58101 | 2519 | |
69996df4 | 2520 | if (perf_file_header__read(&f_header, header, fd) < 0) |
4dc0a04b | 2521 | return -EINVAL; |
7c6a1c65 | 2522 | |
b314e5cf NK |
2523 | /* |
2524 | * Sanity check that perf.data was written cleanly; data size is | |
2525 | * initialized to 0 and updated only if the on_exit function is run. | |
2526 | * If data size is still 0 then the file contains only partial | |
2527 | * information. Just warn user and process it as much as it can. | |
2528 | */ | |
2529 | if (f_header.data.size == 0) { | |
2530 | pr_warning("WARNING: The %s file's data size field is 0 which is unexpected.\n" | |
2531 | "Was the 'perf record' command properly terminated?\n", | |
cc9784bd | 2532 | file->path); |
b314e5cf NK |
2533 | } |
2534 | ||
69996df4 | 2535 | nr_attrs = f_header.attrs.size / f_header.attr_size; |
7c6a1c65 PZ |
2536 | lseek(fd, f_header.attrs.offset, SEEK_SET); |
2537 | ||
2538 | for (i = 0; i < nr_attrs; i++) { | |
a91e5431 | 2539 | struct perf_evsel *evsel; |
1c222bce | 2540 | off_t tmp; |
7c6a1c65 | 2541 | |
69996df4 | 2542 | if (read_attr(fd, header, &f_attr) < 0) |
769885f3 | 2543 | goto out_errno; |
ba21594c | 2544 | |
1060ab85 DA |
2545 | if (header->needs_swap) { |
2546 | f_attr.ids.size = bswap_64(f_attr.ids.size); | |
2547 | f_attr.ids.offset = bswap_64(f_attr.ids.offset); | |
eda3913b | 2548 | perf_event__attr_swap(&f_attr.attr); |
1060ab85 | 2549 | } |
eda3913b | 2550 | |
1c222bce | 2551 | tmp = lseek(fd, 0, SEEK_CUR); |
ef503831 | 2552 | evsel = perf_evsel__new(&f_attr.attr); |
7c6a1c65 | 2553 | |
a91e5431 ACM |
2554 | if (evsel == NULL) |
2555 | goto out_delete_evlist; | |
0807d2d8 ACM |
2556 | |
2557 | evsel->needs_swap = header->needs_swap; | |
a91e5431 ACM |
2558 | /* |
2559 | * Do it before so that if perf_evsel__alloc_id fails, this | |
2560 | * entry gets purged too at perf_evlist__delete(). | |
2561 | */ | |
2562 | perf_evlist__add(session->evlist, evsel); | |
7c6a1c65 PZ |
2563 | |
2564 | nr_ids = f_attr.ids.size / sizeof(u64); | |
a91e5431 ACM |
2565 | /* |
2566 | * We don't have the cpu and thread maps on the header, so | |
2567 | * for allocating the perf_sample_id table we fake 1 cpu and | |
2568 | * hattr->ids threads. | |
2569 | */ | |
2570 | if (perf_evsel__alloc_id(evsel, 1, nr_ids)) | |
2571 | goto out_delete_evlist; | |
2572 | ||
7c6a1c65 PZ |
2573 | lseek(fd, f_attr.ids.offset, SEEK_SET); |
2574 | ||
2575 | for (j = 0; j < nr_ids; j++) { | |
1c0b04d1 | 2576 | if (perf_header__getbuffer64(header, fd, &f_id, sizeof(f_id))) |
769885f3 | 2577 | goto out_errno; |
7c6a1c65 | 2578 | |
a91e5431 | 2579 | perf_evlist__id_add(session->evlist, evsel, 0, j, f_id); |
7c6a1c65 | 2580 | } |
11deb1f9 | 2581 | |
7c6a1c65 PZ |
2582 | lseek(fd, tmp, SEEK_SET); |
2583 | } | |
2584 | ||
d04b35f8 ACM |
2585 | symbol_conf.nr_events = nr_attrs; |
2586 | ||
29f5ffd3 | 2587 | perf_header__process_sections(header, fd, &session->tevent, |
fbe96f29 | 2588 | perf_file_section__process); |
4778d2e4 | 2589 | |
831394bd | 2590 | if (perf_evlist__prepare_tracepoint_events(session->evlist, |
29f5ffd3 | 2591 | session->tevent.pevent)) |
cb9dd49e ACM |
2592 | goto out_delete_evlist; |
2593 | ||
4dc0a04b | 2594 | return 0; |
769885f3 ACM |
2595 | out_errno: |
2596 | return -errno; | |
a91e5431 ACM |
2597 | |
2598 | out_delete_evlist: | |
2599 | perf_evlist__delete(session->evlist); | |
2600 | session->evlist = NULL; | |
2601 | return -ENOMEM; | |
7c6a1c65 | 2602 | } |
0d3a5c88 | 2603 | |
45694aa7 | 2604 | int perf_event__synthesize_attr(struct perf_tool *tool, |
f4d83436 | 2605 | struct perf_event_attr *attr, u32 ids, u64 *id, |
743eb868 | 2606 | perf_event__handler_t process) |
2c46dbb5 | 2607 | { |
8115d60c | 2608 | union perf_event *ev; |
2c46dbb5 TZ |
2609 | size_t size; |
2610 | int err; | |
2611 | ||
2612 | size = sizeof(struct perf_event_attr); | |
9ac3e487 | 2613 | size = PERF_ALIGN(size, sizeof(u64)); |
2c46dbb5 TZ |
2614 | size += sizeof(struct perf_event_header); |
2615 | size += ids * sizeof(u64); | |
2616 | ||
2617 | ev = malloc(size); | |
2618 | ||
ce47dc56 CS |
2619 | if (ev == NULL) |
2620 | return -ENOMEM; | |
2621 | ||
2c46dbb5 TZ |
2622 | ev->attr.attr = *attr; |
2623 | memcpy(ev->attr.id, id, ids * sizeof(u64)); | |
2624 | ||
2625 | ev->attr.header.type = PERF_RECORD_HEADER_ATTR; | |
f4d83436 | 2626 | ev->attr.header.size = (u16)size; |
2c46dbb5 | 2627 | |
f4d83436 RR |
2628 | if (ev->attr.header.size == size) |
2629 | err = process(tool, ev, NULL, NULL); | |
2630 | else | |
2631 | err = -E2BIG; | |
2c46dbb5 TZ |
2632 | |
2633 | free(ev); | |
2634 | ||
2635 | return err; | |
2636 | } | |
2637 | ||
45694aa7 | 2638 | int perf_event__synthesize_attrs(struct perf_tool *tool, |
d20deb64 | 2639 | struct perf_session *session, |
a91e5431 | 2640 | perf_event__handler_t process) |
2c46dbb5 | 2641 | { |
6606f873 | 2642 | struct perf_evsel *evsel; |
a91e5431 | 2643 | int err = 0; |
2c46dbb5 | 2644 | |
0050f7aa | 2645 | evlist__for_each(session->evlist, evsel) { |
6606f873 RR |
2646 | err = perf_event__synthesize_attr(tool, &evsel->attr, evsel->ids, |
2647 | evsel->id, process); | |
2c46dbb5 TZ |
2648 | if (err) { |
2649 | pr_debug("failed to create perf header attribute\n"); | |
2650 | return err; | |
2651 | } | |
2652 | } | |
2653 | ||
2654 | return err; | |
2655 | } | |
2656 | ||
47c3d109 AH |
2657 | int perf_event__process_attr(struct perf_tool *tool __maybe_unused, |
2658 | union perf_event *event, | |
10d0f086 | 2659 | struct perf_evlist **pevlist) |
2c46dbb5 | 2660 | { |
f4d83436 | 2661 | u32 i, ids, n_ids; |
a91e5431 | 2662 | struct perf_evsel *evsel; |
10d0f086 | 2663 | struct perf_evlist *evlist = *pevlist; |
2c46dbb5 | 2664 | |
10d0f086 | 2665 | if (evlist == NULL) { |
334fe7a3 | 2666 | *pevlist = evlist = perf_evlist__new(); |
10d0f086 | 2667 | if (evlist == NULL) |
a91e5431 ACM |
2668 | return -ENOMEM; |
2669 | } | |
2670 | ||
ef503831 | 2671 | evsel = perf_evsel__new(&event->attr.attr); |
a91e5431 | 2672 | if (evsel == NULL) |
2c46dbb5 TZ |
2673 | return -ENOMEM; |
2674 | ||
10d0f086 | 2675 | perf_evlist__add(evlist, evsel); |
a91e5431 | 2676 | |
8115d60c ACM |
2677 | ids = event->header.size; |
2678 | ids -= (void *)&event->attr.id - (void *)event; | |
2c46dbb5 | 2679 | n_ids = ids / sizeof(u64); |
a91e5431 ACM |
2680 | /* |
2681 | * We don't have the cpu and thread maps on the header, so | |
2682 | * for allocating the perf_sample_id table we fake 1 cpu and | |
2683 | * hattr->ids threads. | |
2684 | */ | |
2685 | if (perf_evsel__alloc_id(evsel, 1, n_ids)) | |
2686 | return -ENOMEM; | |
2c46dbb5 TZ |
2687 | |
2688 | for (i = 0; i < n_ids; i++) { | |
10d0f086 | 2689 | perf_evlist__id_add(evlist, evsel, 0, i, event->attr.id[i]); |
2c46dbb5 TZ |
2690 | } |
2691 | ||
7e0d6fc9 AH |
2692 | symbol_conf.nr_events = evlist->nr_entries; |
2693 | ||
2c46dbb5 TZ |
2694 | return 0; |
2695 | } | |
cd19a035 | 2696 | |
45694aa7 | 2697 | int perf_event__synthesize_tracing_data(struct perf_tool *tool, int fd, |
d20deb64 | 2698 | struct perf_evlist *evlist, |
743eb868 | 2699 | perf_event__handler_t process) |
9215545e | 2700 | { |
8115d60c | 2701 | union perf_event ev; |
29208e57 | 2702 | struct tracing_data *tdata; |
9215545e | 2703 | ssize_t size = 0, aligned_size = 0, padding; |
1d037ca1 | 2704 | int err __maybe_unused = 0; |
9215545e | 2705 | |
29208e57 JO |
2706 | /* |
2707 | * We are going to store the size of the data followed | |
2708 | * by the data contents. Since the fd descriptor is a pipe, | |
2709 | * we cannot seek back to store the size of the data once | |
2710 | * we know it. Instead we: | |
2711 | * | |
2712 | * - write the tracing data to the temp file | |
2713 | * - get/write the data size to pipe | |
2714 | * - write the tracing data from the temp file | |
2715 | * to the pipe | |
2716 | */ | |
2717 | tdata = tracing_data_get(&evlist->entries, fd, true); | |
2718 | if (!tdata) | |
2719 | return -1; | |
2720 | ||
9215545e TZ |
2721 | memset(&ev, 0, sizeof(ev)); |
2722 | ||
2723 | ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA; | |
29208e57 | 2724 | size = tdata->size; |
9ac3e487 | 2725 | aligned_size = PERF_ALIGN(size, sizeof(u64)); |
9215545e TZ |
2726 | padding = aligned_size - size; |
2727 | ev.tracing_data.header.size = sizeof(ev.tracing_data); | |
2728 | ev.tracing_data.size = aligned_size; | |
2729 | ||
45694aa7 | 2730 | process(tool, &ev, NULL, NULL); |
9215545e | 2731 | |
29208e57 JO |
2732 | /* |
2733 | * The put function will copy all the tracing data | |
2734 | * stored in temp file to the pipe. | |
2735 | */ | |
2736 | tracing_data_put(tdata); | |
2737 | ||
9215545e TZ |
2738 | write_padded(fd, NULL, 0, padding); |
2739 | ||
2740 | return aligned_size; | |
2741 | } | |
2742 | ||
47c3d109 AH |
2743 | int perf_event__process_tracing_data(struct perf_tool *tool __maybe_unused, |
2744 | union perf_event *event, | |
8115d60c | 2745 | struct perf_session *session) |
9215545e | 2746 | { |
8115d60c | 2747 | ssize_t size_read, padding, size = event->tracing_data.size; |
cc9784bd JO |
2748 | int fd = perf_data_file__fd(session->file); |
2749 | off_t offset = lseek(fd, 0, SEEK_CUR); | |
9215545e TZ |
2750 | char buf[BUFSIZ]; |
2751 | ||
2752 | /* setup for reading amidst mmap */ | |
cc9784bd | 2753 | lseek(fd, offset + sizeof(struct tracing_data_event), |
9215545e TZ |
2754 | SEEK_SET); |
2755 | ||
29f5ffd3 | 2756 | size_read = trace_report(fd, &session->tevent, |
da378962 | 2757 | session->repipe); |
9ac3e487 | 2758 | padding = PERF_ALIGN(size_read, sizeof(u64)) - size_read; |
9215545e | 2759 | |
cc9784bd | 2760 | if (readn(fd, buf, padding) < 0) { |
2caa48a2 ACM |
2761 | pr_err("%s: reading input file", __func__); |
2762 | return -1; | |
2763 | } | |
454c407e TZ |
2764 | if (session->repipe) { |
2765 | int retw = write(STDOUT_FILENO, buf, padding); | |
2caa48a2 ACM |
2766 | if (retw <= 0 || retw != padding) { |
2767 | pr_err("%s: repiping tracing data padding", __func__); | |
2768 | return -1; | |
2769 | } | |
454c407e | 2770 | } |
9215545e | 2771 | |
2caa48a2 ACM |
2772 | if (size_read + padding != size) { |
2773 | pr_err("%s: tracing data size mismatch", __func__); | |
2774 | return -1; | |
2775 | } | |
9215545e | 2776 | |
831394bd | 2777 | perf_evlist__prepare_tracepoint_events(session->evlist, |
29f5ffd3 | 2778 | session->tevent.pevent); |
8b6ee4c5 | 2779 | |
9215545e TZ |
2780 | return size_read + padding; |
2781 | } | |
c7929e47 | 2782 | |
45694aa7 | 2783 | int perf_event__synthesize_build_id(struct perf_tool *tool, |
d20deb64 | 2784 | struct dso *pos, u16 misc, |
8115d60c | 2785 | perf_event__handler_t process, |
743eb868 | 2786 | struct machine *machine) |
c7929e47 | 2787 | { |
8115d60c | 2788 | union perf_event ev; |
c7929e47 TZ |
2789 | size_t len; |
2790 | int err = 0; | |
2791 | ||
2792 | if (!pos->hit) | |
2793 | return err; | |
2794 | ||
2795 | memset(&ev, 0, sizeof(ev)); | |
2796 | ||
2797 | len = pos->long_name_len + 1; | |
9ac3e487 | 2798 | len = PERF_ALIGN(len, NAME_ALIGN); |
c7929e47 TZ |
2799 | memcpy(&ev.build_id.build_id, pos->build_id, sizeof(pos->build_id)); |
2800 | ev.build_id.header.type = PERF_RECORD_HEADER_BUILD_ID; | |
2801 | ev.build_id.header.misc = misc; | |
23346f21 | 2802 | ev.build_id.pid = machine->pid; |
c7929e47 TZ |
2803 | ev.build_id.header.size = sizeof(ev.build_id) + len; |
2804 | memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len); | |
2805 | ||
45694aa7 | 2806 | err = process(tool, &ev, NULL, machine); |
c7929e47 TZ |
2807 | |
2808 | return err; | |
2809 | } | |
2810 | ||
1d037ca1 | 2811 | int perf_event__process_build_id(struct perf_tool *tool __maybe_unused, |
d20deb64 | 2812 | union perf_event *event, |
8115d60c | 2813 | struct perf_session *session) |
c7929e47 | 2814 | { |
8115d60c ACM |
2815 | __event_process_build_id(&event->build_id, |
2816 | event->build_id.filename, | |
a1645ce1 | 2817 | session); |
c7929e47 TZ |
2818 | return 0; |
2819 | } |