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 | |
a1ac1d3c SE |
27 | static bool no_buildid_cache = false; |
28 | ||
fbe96f29 SE |
29 | static u32 header_argc; |
30 | static const char **header_argv; | |
31 | ||
73323f54 SE |
32 | /* |
33 | * magic2 = "PERFILE2" | |
34 | * must be a numerical value to let the endianness | |
35 | * determine the memory layout. That way we are able | |
36 | * to detect endianness when reading the perf.data file | |
37 | * back. | |
38 | * | |
39 | * we check for legacy (PERFFILE) format. | |
40 | */ | |
41 | static const char *__perf_magic1 = "PERFFILE"; | |
42 | static const u64 __perf_magic2 = 0x32454c4946524550ULL; | |
43 | static const u64 __perf_magic2_sw = 0x50455246494c4532ULL; | |
7c6a1c65 | 44 | |
73323f54 | 45 | #define PERF_MAGIC __perf_magic2 |
7c6a1c65 | 46 | |
7c6a1c65 | 47 | struct perf_file_attr { |
cdd6c482 | 48 | struct perf_event_attr attr; |
7c6a1c65 PZ |
49 | struct perf_file_section ids; |
50 | }; | |
51 | ||
1c0b04d1 | 52 | void perf_header__set_feat(struct perf_header *header, int feat) |
8d06367f | 53 | { |
1c0b04d1 | 54 | set_bit(feat, header->adds_features); |
8d06367f ACM |
55 | } |
56 | ||
1c0b04d1 | 57 | void perf_header__clear_feat(struct perf_header *header, int feat) |
baa2f6ce | 58 | { |
1c0b04d1 | 59 | clear_bit(feat, header->adds_features); |
baa2f6ce ACM |
60 | } |
61 | ||
1c0b04d1 | 62 | bool perf_header__has_feat(const struct perf_header *header, int feat) |
8d06367f | 63 | { |
1c0b04d1 | 64 | return test_bit(feat, header->adds_features); |
8d06367f ACM |
65 | } |
66 | ||
3726cc75 | 67 | static int do_write(int fd, const void *buf, size_t size) |
7c6a1c65 PZ |
68 | { |
69 | while (size) { | |
70 | int ret = write(fd, buf, size); | |
71 | ||
72 | if (ret < 0) | |
d5eed904 | 73 | return -errno; |
7c6a1c65 PZ |
74 | |
75 | size -= ret; | |
76 | buf += ret; | |
77 | } | |
3726cc75 ACM |
78 | |
79 | return 0; | |
7c6a1c65 PZ |
80 | } |
81 | ||
e195fac8 | 82 | int write_padded(int fd, const void *bf, size_t count, size_t count_aligned) |
f92cb24c ACM |
83 | { |
84 | static const char zero_buf[NAME_ALIGN]; | |
85 | int err = do_write(fd, bf, count); | |
86 | ||
87 | if (!err) | |
88 | err = do_write(fd, zero_buf, count_aligned - count); | |
89 | ||
90 | return err; | |
91 | } | |
92 | ||
fbe96f29 SE |
93 | static int do_write_string(int fd, const char *str) |
94 | { | |
95 | u32 len, olen; | |
96 | int ret; | |
97 | ||
98 | olen = strlen(str) + 1; | |
9ac3e487 | 99 | len = PERF_ALIGN(olen, NAME_ALIGN); |
fbe96f29 SE |
100 | |
101 | /* write len, incl. \0 */ | |
102 | ret = do_write(fd, &len, sizeof(len)); | |
103 | if (ret < 0) | |
104 | return ret; | |
105 | ||
106 | return write_padded(fd, str, olen, len); | |
107 | } | |
108 | ||
109 | static char *do_read_string(int fd, struct perf_header *ph) | |
110 | { | |
111 | ssize_t sz, ret; | |
112 | u32 len; | |
113 | char *buf; | |
114 | ||
5323f60c | 115 | sz = readn(fd, &len, sizeof(len)); |
fbe96f29 SE |
116 | if (sz < (ssize_t)sizeof(len)) |
117 | return NULL; | |
118 | ||
119 | if (ph->needs_swap) | |
120 | len = bswap_32(len); | |
121 | ||
122 | buf = malloc(len); | |
123 | if (!buf) | |
124 | return NULL; | |
125 | ||
5323f60c | 126 | ret = readn(fd, buf, len); |
fbe96f29 SE |
127 | if (ret == (ssize_t)len) { |
128 | /* | |
129 | * strings are padded by zeroes | |
130 | * thus the actual strlen of buf | |
131 | * may be less than len | |
132 | */ | |
133 | return buf; | |
134 | } | |
135 | ||
136 | free(buf); | |
137 | return NULL; | |
138 | } | |
139 | ||
140 | int | |
141 | perf_header__set_cmdline(int argc, const char **argv) | |
142 | { | |
143 | int i; | |
144 | ||
56e6f602 DA |
145 | /* |
146 | * If header_argv has already been set, do not override it. | |
147 | * This allows a command to set the cmdline, parse args and | |
148 | * then call another builtin function that implements a | |
149 | * command -- e.g, cmd_kvm calling cmd_record. | |
150 | */ | |
151 | if (header_argv) | |
152 | return 0; | |
153 | ||
fbe96f29 SE |
154 | header_argc = (u32)argc; |
155 | ||
156 | /* do not include NULL termination */ | |
157 | header_argv = calloc(argc, sizeof(char *)); | |
158 | if (!header_argv) | |
159 | return -ENOMEM; | |
160 | ||
161 | /* | |
162 | * must copy argv contents because it gets moved | |
163 | * around during option parsing | |
164 | */ | |
165 | for (i = 0; i < argc ; i++) | |
166 | header_argv[i] = argv[i]; | |
167 | ||
168 | return 0; | |
169 | } | |
170 | ||
1d037ca1 | 171 | static int write_tracing_data(int fd, struct perf_header *h __maybe_unused, |
fbe96f29 SE |
172 | struct perf_evlist *evlist) |
173 | { | |
174 | return read_tracing_data(fd, &evlist->entries); | |
175 | } | |
176 | ||
177 | ||
178 | static int write_build_id(int fd, struct perf_header *h, | |
1d037ca1 | 179 | struct perf_evlist *evlist __maybe_unused) |
fbe96f29 SE |
180 | { |
181 | struct perf_session *session; | |
182 | int err; | |
183 | ||
184 | session = container_of(h, struct perf_session, header); | |
185 | ||
e20960c0 RR |
186 | if (!perf_session__read_build_ids(session, true)) |
187 | return -1; | |
188 | ||
714c9c4a | 189 | err = perf_session__write_buildid_table(session, fd); |
fbe96f29 SE |
190 | if (err < 0) { |
191 | pr_debug("failed to write buildid table\n"); | |
192 | return err; | |
193 | } | |
194 | if (!no_buildid_cache) | |
195 | perf_session__cache_build_ids(session); | |
196 | ||
197 | return 0; | |
198 | } | |
199 | ||
1d037ca1 IT |
200 | static int write_hostname(int fd, struct perf_header *h __maybe_unused, |
201 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
202 | { |
203 | struct utsname uts; | |
204 | int ret; | |
205 | ||
206 | ret = uname(&uts); | |
207 | if (ret < 0) | |
208 | return -1; | |
209 | ||
210 | return do_write_string(fd, uts.nodename); | |
211 | } | |
212 | ||
1d037ca1 IT |
213 | static int write_osrelease(int fd, struct perf_header *h __maybe_unused, |
214 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
215 | { |
216 | struct utsname uts; | |
217 | int ret; | |
218 | ||
219 | ret = uname(&uts); | |
220 | if (ret < 0) | |
221 | return -1; | |
222 | ||
223 | return do_write_string(fd, uts.release); | |
224 | } | |
225 | ||
1d037ca1 IT |
226 | static int write_arch(int fd, struct perf_header *h __maybe_unused, |
227 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
228 | { |
229 | struct utsname uts; | |
230 | int ret; | |
231 | ||
232 | ret = uname(&uts); | |
233 | if (ret < 0) | |
234 | return -1; | |
235 | ||
236 | return do_write_string(fd, uts.machine); | |
237 | } | |
238 | ||
1d037ca1 IT |
239 | static int write_version(int fd, struct perf_header *h __maybe_unused, |
240 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
241 | { |
242 | return do_write_string(fd, perf_version_string); | |
243 | } | |
244 | ||
493c3031 | 245 | static int __write_cpudesc(int fd, const char *cpuinfo_proc) |
fbe96f29 | 246 | { |
fbe96f29 SE |
247 | FILE *file; |
248 | char *buf = NULL; | |
249 | char *s, *p; | |
493c3031 | 250 | const char *search = cpuinfo_proc; |
fbe96f29 SE |
251 | size_t len = 0; |
252 | int ret = -1; | |
253 | ||
254 | if (!search) | |
255 | return -1; | |
256 | ||
257 | file = fopen("/proc/cpuinfo", "r"); | |
258 | if (!file) | |
259 | return -1; | |
260 | ||
261 | while (getline(&buf, &len, file) > 0) { | |
262 | ret = strncmp(buf, search, strlen(search)); | |
263 | if (!ret) | |
264 | break; | |
265 | } | |
266 | ||
ed307758 WN |
267 | if (ret) { |
268 | ret = -1; | |
fbe96f29 | 269 | goto done; |
ed307758 | 270 | } |
fbe96f29 SE |
271 | |
272 | s = buf; | |
273 | ||
274 | p = strchr(buf, ':'); | |
275 | if (p && *(p+1) == ' ' && *(p+2)) | |
276 | s = p + 2; | |
277 | p = strchr(s, '\n'); | |
278 | if (p) | |
279 | *p = '\0'; | |
280 | ||
281 | /* squash extra space characters (branding string) */ | |
282 | p = s; | |
283 | while (*p) { | |
284 | if (isspace(*p)) { | |
285 | char *r = p + 1; | |
286 | char *q = r; | |
287 | *p = ' '; | |
288 | while (*q && isspace(*q)) | |
289 | q++; | |
290 | if (q != (p+1)) | |
291 | while ((*r++ = *q++)); | |
292 | } | |
293 | p++; | |
294 | } | |
295 | ret = do_write_string(fd, s); | |
296 | done: | |
297 | free(buf); | |
298 | fclose(file); | |
299 | return ret; | |
300 | } | |
301 | ||
493c3031 WN |
302 | static int write_cpudesc(int fd, struct perf_header *h __maybe_unused, |
303 | struct perf_evlist *evlist __maybe_unused) | |
304 | { | |
305 | #ifndef CPUINFO_PROC | |
306 | #define CPUINFO_PROC {"model name", } | |
307 | #endif | |
308 | const char *cpuinfo_procs[] = CPUINFO_PROC; | |
309 | unsigned int i; | |
310 | ||
311 | for (i = 0; i < ARRAY_SIZE(cpuinfo_procs); i++) { | |
312 | int ret; | |
313 | ret = __write_cpudesc(fd, cpuinfo_procs[i]); | |
314 | if (ret >= 0) | |
315 | return ret; | |
316 | } | |
317 | return -1; | |
318 | } | |
319 | ||
320 | ||
1d037ca1 IT |
321 | static int write_nrcpus(int fd, struct perf_header *h __maybe_unused, |
322 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
323 | { |
324 | long nr; | |
325 | u32 nrc, nra; | |
326 | int ret; | |
327 | ||
328 | nr = sysconf(_SC_NPROCESSORS_CONF); | |
329 | if (nr < 0) | |
330 | return -1; | |
331 | ||
332 | nrc = (u32)(nr & UINT_MAX); | |
333 | ||
334 | nr = sysconf(_SC_NPROCESSORS_ONLN); | |
335 | if (nr < 0) | |
336 | return -1; | |
337 | ||
338 | nra = (u32)(nr & UINT_MAX); | |
339 | ||
340 | ret = do_write(fd, &nrc, sizeof(nrc)); | |
341 | if (ret < 0) | |
342 | return ret; | |
343 | ||
344 | return do_write(fd, &nra, sizeof(nra)); | |
345 | } | |
346 | ||
1d037ca1 | 347 | static int write_event_desc(int fd, struct perf_header *h __maybe_unused, |
fbe96f29 SE |
348 | struct perf_evlist *evlist) |
349 | { | |
6606f873 | 350 | struct perf_evsel *evsel; |
74ba9e11 | 351 | u32 nre, nri, sz; |
fbe96f29 SE |
352 | int ret; |
353 | ||
74ba9e11 | 354 | nre = evlist->nr_entries; |
fbe96f29 SE |
355 | |
356 | /* | |
357 | * write number of events | |
358 | */ | |
359 | ret = do_write(fd, &nre, sizeof(nre)); | |
360 | if (ret < 0) | |
361 | return ret; | |
362 | ||
363 | /* | |
364 | * size of perf_event_attr struct | |
365 | */ | |
6606f873 | 366 | sz = (u32)sizeof(evsel->attr); |
fbe96f29 SE |
367 | ret = do_write(fd, &sz, sizeof(sz)); |
368 | if (ret < 0) | |
369 | return ret; | |
370 | ||
0050f7aa | 371 | evlist__for_each(evlist, evsel) { |
6606f873 | 372 | ret = do_write(fd, &evsel->attr, sz); |
fbe96f29 SE |
373 | if (ret < 0) |
374 | return ret; | |
375 | /* | |
376 | * write number of unique id per event | |
377 | * there is one id per instance of an event | |
378 | * | |
379 | * copy into an nri to be independent of the | |
380 | * type of ids, | |
381 | */ | |
6606f873 | 382 | nri = evsel->ids; |
fbe96f29 SE |
383 | ret = do_write(fd, &nri, sizeof(nri)); |
384 | if (ret < 0) | |
385 | return ret; | |
386 | ||
387 | /* | |
388 | * write event string as passed on cmdline | |
389 | */ | |
6606f873 | 390 | ret = do_write_string(fd, perf_evsel__name(evsel)); |
fbe96f29 SE |
391 | if (ret < 0) |
392 | return ret; | |
393 | /* | |
394 | * write unique ids for this event | |
395 | */ | |
6606f873 | 396 | ret = do_write(fd, evsel->id, evsel->ids * sizeof(u64)); |
fbe96f29 SE |
397 | if (ret < 0) |
398 | return ret; | |
399 | } | |
400 | return 0; | |
401 | } | |
402 | ||
1d037ca1 IT |
403 | static int write_cmdline(int fd, struct perf_header *h __maybe_unused, |
404 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
405 | { |
406 | char buf[MAXPATHLEN]; | |
407 | char proc[32]; | |
408 | u32 i, n; | |
409 | int ret; | |
410 | ||
411 | /* | |
412 | * actual atual path to perf binary | |
413 | */ | |
414 | sprintf(proc, "/proc/%d/exe", getpid()); | |
415 | ret = readlink(proc, buf, sizeof(buf)); | |
416 | if (ret <= 0) | |
417 | return -1; | |
418 | ||
419 | /* readlink() does not add null termination */ | |
420 | buf[ret] = '\0'; | |
421 | ||
422 | /* account for binary path */ | |
423 | n = header_argc + 1; | |
424 | ||
425 | ret = do_write(fd, &n, sizeof(n)); | |
426 | if (ret < 0) | |
427 | return ret; | |
428 | ||
429 | ret = do_write_string(fd, buf); | |
430 | if (ret < 0) | |
431 | return ret; | |
432 | ||
433 | for (i = 0 ; i < header_argc; i++) { | |
434 | ret = do_write_string(fd, header_argv[i]); | |
435 | if (ret < 0) | |
436 | return ret; | |
437 | } | |
438 | return 0; | |
439 | } | |
440 | ||
441 | #define CORE_SIB_FMT \ | |
442 | "/sys/devices/system/cpu/cpu%d/topology/core_siblings_list" | |
443 | #define THRD_SIB_FMT \ | |
444 | "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list" | |
445 | ||
446 | struct cpu_topo { | |
447 | u32 core_sib; | |
448 | u32 thread_sib; | |
449 | char **core_siblings; | |
450 | char **thread_siblings; | |
451 | }; | |
452 | ||
453 | static int build_cpu_topo(struct cpu_topo *tp, int cpu) | |
454 | { | |
455 | FILE *fp; | |
456 | char filename[MAXPATHLEN]; | |
457 | char *buf = NULL, *p; | |
458 | size_t len = 0; | |
c5885749 | 459 | ssize_t sret; |
fbe96f29 SE |
460 | u32 i = 0; |
461 | int ret = -1; | |
462 | ||
463 | sprintf(filename, CORE_SIB_FMT, cpu); | |
464 | fp = fopen(filename, "r"); | |
465 | if (!fp) | |
c5885749 | 466 | goto try_threads; |
fbe96f29 | 467 | |
c5885749 | 468 | sret = getline(&buf, &len, fp); |
fbe96f29 | 469 | fclose(fp); |
c5885749 SE |
470 | if (sret <= 0) |
471 | goto try_threads; | |
fbe96f29 SE |
472 | |
473 | p = strchr(buf, '\n'); | |
474 | if (p) | |
475 | *p = '\0'; | |
476 | ||
477 | for (i = 0; i < tp->core_sib; i++) { | |
478 | if (!strcmp(buf, tp->core_siblings[i])) | |
479 | break; | |
480 | } | |
481 | if (i == tp->core_sib) { | |
482 | tp->core_siblings[i] = buf; | |
483 | tp->core_sib++; | |
484 | buf = NULL; | |
485 | len = 0; | |
486 | } | |
c5885749 | 487 | ret = 0; |
fbe96f29 | 488 | |
c5885749 | 489 | try_threads: |
fbe96f29 SE |
490 | sprintf(filename, THRD_SIB_FMT, cpu); |
491 | fp = fopen(filename, "r"); | |
492 | if (!fp) | |
493 | goto done; | |
494 | ||
495 | if (getline(&buf, &len, fp) <= 0) | |
496 | goto done; | |
497 | ||
498 | p = strchr(buf, '\n'); | |
499 | if (p) | |
500 | *p = '\0'; | |
501 | ||
502 | for (i = 0; i < tp->thread_sib; i++) { | |
503 | if (!strcmp(buf, tp->thread_siblings[i])) | |
504 | break; | |
505 | } | |
506 | if (i == tp->thread_sib) { | |
507 | tp->thread_siblings[i] = buf; | |
508 | tp->thread_sib++; | |
509 | buf = NULL; | |
510 | } | |
511 | ret = 0; | |
512 | done: | |
513 | if(fp) | |
514 | fclose(fp); | |
515 | free(buf); | |
516 | return ret; | |
517 | } | |
518 | ||
519 | static void free_cpu_topo(struct cpu_topo *tp) | |
520 | { | |
521 | u32 i; | |
522 | ||
523 | if (!tp) | |
524 | return; | |
525 | ||
526 | for (i = 0 ; i < tp->core_sib; i++) | |
74cf249d | 527 | zfree(&tp->core_siblings[i]); |
fbe96f29 SE |
528 | |
529 | for (i = 0 ; i < tp->thread_sib; i++) | |
74cf249d | 530 | zfree(&tp->thread_siblings[i]); |
fbe96f29 SE |
531 | |
532 | free(tp); | |
533 | } | |
534 | ||
535 | static struct cpu_topo *build_cpu_topology(void) | |
536 | { | |
537 | struct cpu_topo *tp; | |
538 | void *addr; | |
539 | u32 nr, i; | |
540 | size_t sz; | |
541 | long ncpus; | |
542 | int ret = -1; | |
543 | ||
544 | ncpus = sysconf(_SC_NPROCESSORS_CONF); | |
545 | if (ncpus < 0) | |
546 | return NULL; | |
547 | ||
548 | nr = (u32)(ncpus & UINT_MAX); | |
549 | ||
550 | sz = nr * sizeof(char *); | |
551 | ||
552 | addr = calloc(1, sizeof(*tp) + 2 * sz); | |
553 | if (!addr) | |
554 | return NULL; | |
555 | ||
556 | tp = addr; | |
557 | ||
558 | addr += sizeof(*tp); | |
559 | tp->core_siblings = addr; | |
560 | addr += sz; | |
561 | tp->thread_siblings = addr; | |
562 | ||
563 | for (i = 0; i < nr; i++) { | |
564 | ret = build_cpu_topo(tp, i); | |
565 | if (ret < 0) | |
566 | break; | |
567 | } | |
568 | if (ret) { | |
569 | free_cpu_topo(tp); | |
570 | tp = NULL; | |
571 | } | |
572 | return tp; | |
573 | } | |
574 | ||
1d037ca1 IT |
575 | static int write_cpu_topology(int fd, struct perf_header *h __maybe_unused, |
576 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
577 | { |
578 | struct cpu_topo *tp; | |
579 | u32 i; | |
580 | int ret; | |
581 | ||
582 | tp = build_cpu_topology(); | |
583 | if (!tp) | |
584 | return -1; | |
585 | ||
586 | ret = do_write(fd, &tp->core_sib, sizeof(tp->core_sib)); | |
587 | if (ret < 0) | |
588 | goto done; | |
589 | ||
590 | for (i = 0; i < tp->core_sib; i++) { | |
591 | ret = do_write_string(fd, tp->core_siblings[i]); | |
592 | if (ret < 0) | |
593 | goto done; | |
594 | } | |
595 | ret = do_write(fd, &tp->thread_sib, sizeof(tp->thread_sib)); | |
596 | if (ret < 0) | |
597 | goto done; | |
598 | ||
599 | for (i = 0; i < tp->thread_sib; i++) { | |
600 | ret = do_write_string(fd, tp->thread_siblings[i]); | |
601 | if (ret < 0) | |
602 | break; | |
603 | } | |
604 | done: | |
605 | free_cpu_topo(tp); | |
606 | return ret; | |
607 | } | |
608 | ||
609 | ||
610 | ||
1d037ca1 IT |
611 | static int write_total_mem(int fd, struct perf_header *h __maybe_unused, |
612 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
613 | { |
614 | char *buf = NULL; | |
615 | FILE *fp; | |
616 | size_t len = 0; | |
617 | int ret = -1, n; | |
618 | uint64_t mem; | |
619 | ||
620 | fp = fopen("/proc/meminfo", "r"); | |
621 | if (!fp) | |
622 | return -1; | |
623 | ||
624 | while (getline(&buf, &len, fp) > 0) { | |
625 | ret = strncmp(buf, "MemTotal:", 9); | |
626 | if (!ret) | |
627 | break; | |
628 | } | |
629 | if (!ret) { | |
630 | n = sscanf(buf, "%*s %"PRIu64, &mem); | |
631 | if (n == 1) | |
632 | ret = do_write(fd, &mem, sizeof(mem)); | |
ed307758 WN |
633 | } else |
634 | ret = -1; | |
fbe96f29 SE |
635 | free(buf); |
636 | fclose(fp); | |
637 | return ret; | |
638 | } | |
639 | ||
640 | static int write_topo_node(int fd, int node) | |
641 | { | |
642 | char str[MAXPATHLEN]; | |
643 | char field[32]; | |
644 | char *buf = NULL, *p; | |
645 | size_t len = 0; | |
646 | FILE *fp; | |
647 | u64 mem_total, mem_free, mem; | |
648 | int ret = -1; | |
649 | ||
650 | sprintf(str, "/sys/devices/system/node/node%d/meminfo", node); | |
651 | fp = fopen(str, "r"); | |
652 | if (!fp) | |
653 | return -1; | |
654 | ||
655 | while (getline(&buf, &len, fp) > 0) { | |
656 | /* skip over invalid lines */ | |
657 | if (!strchr(buf, ':')) | |
658 | continue; | |
a761a2d8 | 659 | if (sscanf(buf, "%*s %*d %31s %"PRIu64, field, &mem) != 2) |
fbe96f29 SE |
660 | goto done; |
661 | if (!strcmp(field, "MemTotal:")) | |
662 | mem_total = mem; | |
663 | if (!strcmp(field, "MemFree:")) | |
664 | mem_free = mem; | |
665 | } | |
666 | ||
667 | fclose(fp); | |
5809fde0 | 668 | fp = NULL; |
fbe96f29 SE |
669 | |
670 | ret = do_write(fd, &mem_total, sizeof(u64)); | |
671 | if (ret) | |
672 | goto done; | |
673 | ||
674 | ret = do_write(fd, &mem_free, sizeof(u64)); | |
675 | if (ret) | |
676 | goto done; | |
677 | ||
678 | ret = -1; | |
679 | sprintf(str, "/sys/devices/system/node/node%d/cpulist", node); | |
680 | ||
681 | fp = fopen(str, "r"); | |
682 | if (!fp) | |
683 | goto done; | |
684 | ||
685 | if (getline(&buf, &len, fp) <= 0) | |
686 | goto done; | |
687 | ||
688 | p = strchr(buf, '\n'); | |
689 | if (p) | |
690 | *p = '\0'; | |
691 | ||
692 | ret = do_write_string(fd, buf); | |
693 | done: | |
694 | free(buf); | |
5809fde0 TJ |
695 | if (fp) |
696 | fclose(fp); | |
fbe96f29 SE |
697 | return ret; |
698 | } | |
699 | ||
1d037ca1 IT |
700 | static int write_numa_topology(int fd, struct perf_header *h __maybe_unused, |
701 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
702 | { |
703 | char *buf = NULL; | |
704 | size_t len = 0; | |
705 | FILE *fp; | |
706 | struct cpu_map *node_map = NULL; | |
707 | char *c; | |
708 | u32 nr, i, j; | |
709 | int ret = -1; | |
710 | ||
711 | fp = fopen("/sys/devices/system/node/online", "r"); | |
712 | if (!fp) | |
713 | return -1; | |
714 | ||
715 | if (getline(&buf, &len, fp) <= 0) | |
716 | goto done; | |
717 | ||
718 | c = strchr(buf, '\n'); | |
719 | if (c) | |
720 | *c = '\0'; | |
721 | ||
722 | node_map = cpu_map__new(buf); | |
723 | if (!node_map) | |
724 | goto done; | |
725 | ||
726 | nr = (u32)node_map->nr; | |
727 | ||
728 | ret = do_write(fd, &nr, sizeof(nr)); | |
729 | if (ret < 0) | |
730 | goto done; | |
731 | ||
732 | for (i = 0; i < nr; i++) { | |
733 | j = (u32)node_map->map[i]; | |
734 | ret = do_write(fd, &j, sizeof(j)); | |
735 | if (ret < 0) | |
736 | break; | |
737 | ||
738 | ret = write_topo_node(fd, i); | |
739 | if (ret < 0) | |
740 | break; | |
741 | } | |
742 | done: | |
743 | free(buf); | |
744 | fclose(fp); | |
745 | free(node_map); | |
746 | return ret; | |
747 | } | |
748 | ||
50a9667c RR |
749 | /* |
750 | * File format: | |
751 | * | |
752 | * struct pmu_mappings { | |
753 | * u32 pmu_num; | |
754 | * struct pmu_map { | |
755 | * u32 type; | |
756 | * char name[]; | |
757 | * }[pmu_num]; | |
758 | * }; | |
759 | */ | |
760 | ||
1d037ca1 IT |
761 | static int write_pmu_mappings(int fd, struct perf_header *h __maybe_unused, |
762 | struct perf_evlist *evlist __maybe_unused) | |
50a9667c RR |
763 | { |
764 | struct perf_pmu *pmu = NULL; | |
765 | off_t offset = lseek(fd, 0, SEEK_CUR); | |
766 | __u32 pmu_num = 0; | |
5323f60c | 767 | int ret; |
50a9667c RR |
768 | |
769 | /* write real pmu_num later */ | |
5323f60c NK |
770 | ret = do_write(fd, &pmu_num, sizeof(pmu_num)); |
771 | if (ret < 0) | |
772 | return ret; | |
50a9667c RR |
773 | |
774 | while ((pmu = perf_pmu__scan(pmu))) { | |
775 | if (!pmu->name) | |
776 | continue; | |
777 | pmu_num++; | |
5323f60c NK |
778 | |
779 | ret = do_write(fd, &pmu->type, sizeof(pmu->type)); | |
780 | if (ret < 0) | |
781 | return ret; | |
782 | ||
783 | ret = do_write_string(fd, pmu->name); | |
784 | if (ret < 0) | |
785 | return ret; | |
50a9667c RR |
786 | } |
787 | ||
788 | if (pwrite(fd, &pmu_num, sizeof(pmu_num), offset) != sizeof(pmu_num)) { | |
789 | /* discard all */ | |
790 | lseek(fd, offset, SEEK_SET); | |
791 | return -1; | |
792 | } | |
793 | ||
794 | return 0; | |
795 | } | |
796 | ||
a8bb559b NK |
797 | /* |
798 | * File format: | |
799 | * | |
800 | * struct group_descs { | |
801 | * u32 nr_groups; | |
802 | * struct group_desc { | |
803 | * char name[]; | |
804 | * u32 leader_idx; | |
805 | * u32 nr_members; | |
806 | * }[nr_groups]; | |
807 | * }; | |
808 | */ | |
809 | static int write_group_desc(int fd, struct perf_header *h __maybe_unused, | |
810 | struct perf_evlist *evlist) | |
811 | { | |
812 | u32 nr_groups = evlist->nr_groups; | |
813 | struct perf_evsel *evsel; | |
814 | int ret; | |
815 | ||
816 | ret = do_write(fd, &nr_groups, sizeof(nr_groups)); | |
817 | if (ret < 0) | |
818 | return ret; | |
819 | ||
0050f7aa | 820 | evlist__for_each(evlist, evsel) { |
a8bb559b NK |
821 | if (perf_evsel__is_group_leader(evsel) && |
822 | evsel->nr_members > 1) { | |
823 | const char *name = evsel->group_name ?: "{anon_group}"; | |
824 | u32 leader_idx = evsel->idx; | |
825 | u32 nr_members = evsel->nr_members; | |
826 | ||
827 | ret = do_write_string(fd, name); | |
828 | if (ret < 0) | |
829 | return ret; | |
830 | ||
831 | ret = do_write(fd, &leader_idx, sizeof(leader_idx)); | |
832 | if (ret < 0) | |
833 | return ret; | |
834 | ||
835 | ret = do_write(fd, &nr_members, sizeof(nr_members)); | |
836 | if (ret < 0) | |
837 | return ret; | |
838 | } | |
839 | } | |
840 | return 0; | |
841 | } | |
842 | ||
fbe96f29 SE |
843 | /* |
844 | * default get_cpuid(): nothing gets recorded | |
845 | * actual implementation must be in arch/$(ARCH)/util/header.c | |
846 | */ | |
1d037ca1 IT |
847 | int __attribute__ ((weak)) get_cpuid(char *buffer __maybe_unused, |
848 | size_t sz __maybe_unused) | |
fbe96f29 SE |
849 | { |
850 | return -1; | |
851 | } | |
852 | ||
1d037ca1 IT |
853 | static int write_cpuid(int fd, struct perf_header *h __maybe_unused, |
854 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
855 | { |
856 | char buffer[64]; | |
857 | int ret; | |
858 | ||
859 | ret = get_cpuid(buffer, sizeof(buffer)); | |
860 | if (!ret) | |
861 | goto write_it; | |
862 | ||
863 | return -1; | |
864 | write_it: | |
865 | return do_write_string(fd, buffer); | |
866 | } | |
867 | ||
1d037ca1 IT |
868 | static int write_branch_stack(int fd __maybe_unused, |
869 | struct perf_header *h __maybe_unused, | |
870 | struct perf_evlist *evlist __maybe_unused) | |
330aa675 SE |
871 | { |
872 | return 0; | |
873 | } | |
874 | ||
7e94cfcc NK |
875 | static void print_hostname(struct perf_header *ph, int fd __maybe_unused, |
876 | FILE *fp) | |
fbe96f29 | 877 | { |
7e94cfcc | 878 | fprintf(fp, "# hostname : %s\n", ph->env.hostname); |
fbe96f29 SE |
879 | } |
880 | ||
7e94cfcc NK |
881 | static void print_osrelease(struct perf_header *ph, int fd __maybe_unused, |
882 | FILE *fp) | |
fbe96f29 | 883 | { |
7e94cfcc | 884 | fprintf(fp, "# os release : %s\n", ph->env.os_release); |
fbe96f29 SE |
885 | } |
886 | ||
7e94cfcc | 887 | static void print_arch(struct perf_header *ph, int fd __maybe_unused, FILE *fp) |
fbe96f29 | 888 | { |
7e94cfcc | 889 | fprintf(fp, "# arch : %s\n", ph->env.arch); |
fbe96f29 SE |
890 | } |
891 | ||
7e94cfcc NK |
892 | static void print_cpudesc(struct perf_header *ph, int fd __maybe_unused, |
893 | FILE *fp) | |
fbe96f29 | 894 | { |
7e94cfcc | 895 | fprintf(fp, "# cpudesc : %s\n", ph->env.cpu_desc); |
fbe96f29 SE |
896 | } |
897 | ||
7e94cfcc NK |
898 | static void print_nrcpus(struct perf_header *ph, int fd __maybe_unused, |
899 | FILE *fp) | |
fbe96f29 | 900 | { |
7e94cfcc NK |
901 | fprintf(fp, "# nrcpus online : %u\n", ph->env.nr_cpus_online); |
902 | fprintf(fp, "# nrcpus avail : %u\n", ph->env.nr_cpus_avail); | |
fbe96f29 SE |
903 | } |
904 | ||
7e94cfcc NK |
905 | static void print_version(struct perf_header *ph, int fd __maybe_unused, |
906 | FILE *fp) | |
fbe96f29 | 907 | { |
7e94cfcc | 908 | fprintf(fp, "# perf version : %s\n", ph->env.version); |
fbe96f29 SE |
909 | } |
910 | ||
7e94cfcc NK |
911 | static void print_cmdline(struct perf_header *ph, int fd __maybe_unused, |
912 | FILE *fp) | |
fbe96f29 | 913 | { |
7e94cfcc | 914 | int nr, i; |
fbe96f29 | 915 | char *str; |
fbe96f29 | 916 | |
7e94cfcc NK |
917 | nr = ph->env.nr_cmdline; |
918 | str = ph->env.cmdline; | |
fbe96f29 SE |
919 | |
920 | fprintf(fp, "# cmdline : "); | |
921 | ||
922 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 923 | fprintf(fp, "%s ", str); |
7e94cfcc | 924 | str += strlen(str) + 1; |
fbe96f29 SE |
925 | } |
926 | fputc('\n', fp); | |
927 | } | |
928 | ||
7e94cfcc NK |
929 | static void print_cpu_topology(struct perf_header *ph, int fd __maybe_unused, |
930 | FILE *fp) | |
fbe96f29 | 931 | { |
7e94cfcc | 932 | int nr, i; |
fbe96f29 SE |
933 | char *str; |
934 | ||
7e94cfcc NK |
935 | nr = ph->env.nr_sibling_cores; |
936 | str = ph->env.sibling_cores; | |
fbe96f29 SE |
937 | |
938 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 939 | fprintf(fp, "# sibling cores : %s\n", str); |
7e94cfcc | 940 | str += strlen(str) + 1; |
fbe96f29 SE |
941 | } |
942 | ||
7e94cfcc NK |
943 | nr = ph->env.nr_sibling_threads; |
944 | str = ph->env.sibling_threads; | |
fbe96f29 SE |
945 | |
946 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 947 | fprintf(fp, "# sibling threads : %s\n", str); |
7e94cfcc | 948 | str += strlen(str) + 1; |
fbe96f29 SE |
949 | } |
950 | } | |
951 | ||
4e1b9c67 | 952 | static void free_event_desc(struct perf_evsel *events) |
fbe96f29 | 953 | { |
4e1b9c67 RR |
954 | struct perf_evsel *evsel; |
955 | ||
956 | if (!events) | |
957 | return; | |
958 | ||
959 | for (evsel = events; evsel->attr.size; evsel++) { | |
74cf249d ACM |
960 | zfree(&evsel->name); |
961 | zfree(&evsel->id); | |
4e1b9c67 RR |
962 | } |
963 | ||
964 | free(events); | |
965 | } | |
966 | ||
967 | static struct perf_evsel * | |
968 | read_event_desc(struct perf_header *ph, int fd) | |
969 | { | |
970 | struct perf_evsel *evsel, *events = NULL; | |
971 | u64 *id; | |
fbe96f29 | 972 | void *buf = NULL; |
62db9068 SE |
973 | u32 nre, sz, nr, i, j; |
974 | ssize_t ret; | |
975 | size_t msz; | |
fbe96f29 SE |
976 | |
977 | /* number of events */ | |
5323f60c | 978 | ret = readn(fd, &nre, sizeof(nre)); |
fbe96f29 SE |
979 | if (ret != (ssize_t)sizeof(nre)) |
980 | goto error; | |
981 | ||
982 | if (ph->needs_swap) | |
983 | nre = bswap_32(nre); | |
984 | ||
5323f60c | 985 | ret = readn(fd, &sz, sizeof(sz)); |
fbe96f29 SE |
986 | if (ret != (ssize_t)sizeof(sz)) |
987 | goto error; | |
988 | ||
989 | if (ph->needs_swap) | |
990 | sz = bswap_32(sz); | |
991 | ||
62db9068 | 992 | /* buffer to hold on file attr struct */ |
fbe96f29 SE |
993 | buf = malloc(sz); |
994 | if (!buf) | |
995 | goto error; | |
996 | ||
4e1b9c67 RR |
997 | /* the last event terminates with evsel->attr.size == 0: */ |
998 | events = calloc(nre + 1, sizeof(*events)); | |
999 | if (!events) | |
1000 | goto error; | |
1001 | ||
1002 | msz = sizeof(evsel->attr); | |
9fafd98f | 1003 | if (sz < msz) |
fbe96f29 SE |
1004 | msz = sz; |
1005 | ||
4e1b9c67 RR |
1006 | for (i = 0, evsel = events; i < nre; evsel++, i++) { |
1007 | evsel->idx = i; | |
fbe96f29 | 1008 | |
62db9068 SE |
1009 | /* |
1010 | * must read entire on-file attr struct to | |
1011 | * sync up with layout. | |
1012 | */ | |
5323f60c | 1013 | ret = readn(fd, buf, sz); |
fbe96f29 SE |
1014 | if (ret != (ssize_t)sz) |
1015 | goto error; | |
1016 | ||
1017 | if (ph->needs_swap) | |
1018 | perf_event__attr_swap(buf); | |
1019 | ||
4e1b9c67 | 1020 | memcpy(&evsel->attr, buf, msz); |
fbe96f29 | 1021 | |
5323f60c | 1022 | ret = readn(fd, &nr, sizeof(nr)); |
fbe96f29 SE |
1023 | if (ret != (ssize_t)sizeof(nr)) |
1024 | goto error; | |
1025 | ||
0807d2d8 | 1026 | if (ph->needs_swap) { |
fbe96f29 | 1027 | nr = bswap_32(nr); |
0807d2d8 ACM |
1028 | evsel->needs_swap = true; |
1029 | } | |
fbe96f29 | 1030 | |
4e1b9c67 RR |
1031 | evsel->name = do_read_string(fd, ph); |
1032 | ||
1033 | if (!nr) | |
1034 | continue; | |
1035 | ||
1036 | id = calloc(nr, sizeof(*id)); | |
1037 | if (!id) | |
1038 | goto error; | |
1039 | evsel->ids = nr; | |
1040 | evsel->id = id; | |
1041 | ||
1042 | for (j = 0 ; j < nr; j++) { | |
5323f60c | 1043 | ret = readn(fd, id, sizeof(*id)); |
4e1b9c67 RR |
1044 | if (ret != (ssize_t)sizeof(*id)) |
1045 | goto error; | |
1046 | if (ph->needs_swap) | |
1047 | *id = bswap_64(*id); | |
1048 | id++; | |
1049 | } | |
1050 | } | |
1051 | out: | |
04662523 | 1052 | free(buf); |
4e1b9c67 RR |
1053 | return events; |
1054 | error: | |
1055 | if (events) | |
1056 | free_event_desc(events); | |
1057 | events = NULL; | |
1058 | goto out; | |
1059 | } | |
1060 | ||
1061 | static void print_event_desc(struct perf_header *ph, int fd, FILE *fp) | |
1062 | { | |
1063 | struct perf_evsel *evsel, *events = read_event_desc(ph, fd); | |
1064 | u32 j; | |
1065 | u64 *id; | |
1066 | ||
1067 | if (!events) { | |
1068 | fprintf(fp, "# event desc: not available or unable to read\n"); | |
1069 | return; | |
1070 | } | |
1071 | ||
1072 | for (evsel = events; evsel->attr.size; evsel++) { | |
1073 | fprintf(fp, "# event : name = %s, ", evsel->name); | |
fbe96f29 SE |
1074 | |
1075 | fprintf(fp, "type = %d, config = 0x%"PRIx64 | |
1076 | ", config1 = 0x%"PRIx64", config2 = 0x%"PRIx64, | |
4e1b9c67 RR |
1077 | evsel->attr.type, |
1078 | (u64)evsel->attr.config, | |
1079 | (u64)evsel->attr.config1, | |
1080 | (u64)evsel->attr.config2); | |
fbe96f29 SE |
1081 | |
1082 | fprintf(fp, ", excl_usr = %d, excl_kern = %d", | |
4e1b9c67 RR |
1083 | evsel->attr.exclude_user, |
1084 | evsel->attr.exclude_kernel); | |
fbe96f29 | 1085 | |
78b961ff | 1086 | fprintf(fp, ", excl_host = %d, excl_guest = %d", |
4e1b9c67 RR |
1087 | evsel->attr.exclude_host, |
1088 | evsel->attr.exclude_guest); | |
78b961ff | 1089 | |
4e1b9c67 | 1090 | fprintf(fp, ", precise_ip = %d", evsel->attr.precise_ip); |
78b961ff | 1091 | |
5c5e854b SE |
1092 | fprintf(fp, ", attr_mmap2 = %d", evsel->attr.mmap2); |
1093 | fprintf(fp, ", attr_mmap = %d", evsel->attr.mmap); | |
1094 | fprintf(fp, ", attr_mmap_data = %d", evsel->attr.mmap_data); | |
4e1b9c67 | 1095 | if (evsel->ids) { |
fbe96f29 | 1096 | fprintf(fp, ", id = {"); |
4e1b9c67 RR |
1097 | for (j = 0, id = evsel->id; j < evsel->ids; j++, id++) { |
1098 | if (j) | |
1099 | fputc(',', fp); | |
1100 | fprintf(fp, " %"PRIu64, *id); | |
1101 | } | |
fbe96f29 | 1102 | fprintf(fp, " }"); |
4e1b9c67 RR |
1103 | } |
1104 | ||
fbe96f29 SE |
1105 | fputc('\n', fp); |
1106 | } | |
4e1b9c67 RR |
1107 | |
1108 | free_event_desc(events); | |
fbe96f29 SE |
1109 | } |
1110 | ||
7e94cfcc | 1111 | static void print_total_mem(struct perf_header *ph, int fd __maybe_unused, |
1d037ca1 | 1112 | FILE *fp) |
fbe96f29 | 1113 | { |
7e94cfcc | 1114 | fprintf(fp, "# total memory : %Lu kB\n", ph->env.total_mem); |
fbe96f29 SE |
1115 | } |
1116 | ||
7e94cfcc | 1117 | static void print_numa_topology(struct perf_header *ph, int fd __maybe_unused, |
1d037ca1 | 1118 | FILE *fp) |
fbe96f29 | 1119 | { |
fbe96f29 | 1120 | u32 nr, c, i; |
7e94cfcc | 1121 | char *str, *tmp; |
fbe96f29 SE |
1122 | uint64_t mem_total, mem_free; |
1123 | ||
1124 | /* nr nodes */ | |
7e94cfcc NK |
1125 | nr = ph->env.nr_numa_nodes; |
1126 | str = ph->env.numa_nodes; | |
fbe96f29 SE |
1127 | |
1128 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 1129 | /* node number */ |
7e94cfcc NK |
1130 | c = strtoul(str, &tmp, 0); |
1131 | if (*tmp != ':') | |
fbe96f29 SE |
1132 | goto error; |
1133 | ||
7e94cfcc NK |
1134 | str = tmp + 1; |
1135 | mem_total = strtoull(str, &tmp, 0); | |
1136 | if (*tmp != ':') | |
fbe96f29 SE |
1137 | goto error; |
1138 | ||
7e94cfcc NK |
1139 | str = tmp + 1; |
1140 | mem_free = strtoull(str, &tmp, 0); | |
1141 | if (*tmp != ':') | |
fbe96f29 SE |
1142 | goto error; |
1143 | ||
fbe96f29 SE |
1144 | fprintf(fp, "# node%u meminfo : total = %"PRIu64" kB," |
1145 | " free = %"PRIu64" kB\n", | |
7e94cfcc | 1146 | c, mem_total, mem_free); |
fbe96f29 | 1147 | |
7e94cfcc | 1148 | str = tmp + 1; |
fbe96f29 | 1149 | fprintf(fp, "# node%u cpu list : %s\n", c, str); |
1234471e NK |
1150 | |
1151 | str += strlen(str) + 1; | |
fbe96f29 SE |
1152 | } |
1153 | return; | |
1154 | error: | |
1155 | fprintf(fp, "# numa topology : not available\n"); | |
1156 | } | |
1157 | ||
7e94cfcc | 1158 | static void print_cpuid(struct perf_header *ph, int fd __maybe_unused, FILE *fp) |
fbe96f29 | 1159 | { |
7e94cfcc | 1160 | fprintf(fp, "# cpuid : %s\n", ph->env.cpuid); |
fbe96f29 SE |
1161 | } |
1162 | ||
1d037ca1 | 1163 | static void print_branch_stack(struct perf_header *ph __maybe_unused, |
7e94cfcc | 1164 | int fd __maybe_unused, FILE *fp) |
330aa675 SE |
1165 | { |
1166 | fprintf(fp, "# contains samples with branch stack\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; | |
8fa7d87f | 1236 | struct dsos *dsos; |
08d95bd2 RR |
1237 | struct machine *machine; |
1238 | u16 misc; | |
1239 | struct dso *dso; | |
1240 | enum dso_kernel_type dso_type; | |
1241 | ||
1242 | machine = perf_session__findnew_machine(session, bev->pid); | |
1243 | if (!machine) | |
1244 | goto out; | |
1245 | ||
1246 | misc = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
1247 | ||
1248 | switch (misc) { | |
1249 | case PERF_RECORD_MISC_KERNEL: | |
1250 | dso_type = DSO_TYPE_KERNEL; | |
8fa7d87f | 1251 | dsos = &machine->kernel_dsos; |
08d95bd2 RR |
1252 | break; |
1253 | case PERF_RECORD_MISC_GUEST_KERNEL: | |
1254 | dso_type = DSO_TYPE_GUEST_KERNEL; | |
8fa7d87f | 1255 | dsos = &machine->kernel_dsos; |
08d95bd2 RR |
1256 | break; |
1257 | case PERF_RECORD_MISC_USER: | |
1258 | case PERF_RECORD_MISC_GUEST_USER: | |
1259 | dso_type = DSO_TYPE_USER; | |
8fa7d87f | 1260 | dsos = &machine->user_dsos; |
08d95bd2 RR |
1261 | break; |
1262 | default: | |
1263 | goto out; | |
1264 | } | |
1265 | ||
8fa7d87f | 1266 | dso = __dsos__findnew(dsos, filename); |
08d95bd2 RR |
1267 | if (dso != NULL) { |
1268 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; | |
1269 | ||
1270 | dso__set_build_id(dso, &bev->build_id); | |
1271 | ||
b837a8bd | 1272 | if (!is_kernel_module(filename, NULL)) |
08d95bd2 RR |
1273 | dso->kernel = dso_type; |
1274 | ||
1275 | build_id__sprintf(dso->build_id, sizeof(dso->build_id), | |
1276 | sbuild_id); | |
1277 | pr_debug("build id event received for %s: %s\n", | |
1278 | dso->long_name, sbuild_id); | |
1279 | } | |
1280 | ||
1281 | err = 0; | |
1282 | out: | |
1283 | return err; | |
1284 | } | |
1285 | ||
1286 | static int perf_header__read_build_ids_abi_quirk(struct perf_header *header, | |
1287 | int input, u64 offset, u64 size) | |
1288 | { | |
1289 | struct perf_session *session = container_of(header, struct perf_session, header); | |
1290 | struct { | |
1291 | struct perf_event_header header; | |
9ac3e487 | 1292 | u8 build_id[PERF_ALIGN(BUILD_ID_SIZE, sizeof(u64))]; |
08d95bd2 RR |
1293 | char filename[0]; |
1294 | } old_bev; | |
1295 | struct build_id_event bev; | |
1296 | char filename[PATH_MAX]; | |
1297 | u64 limit = offset + size; | |
1298 | ||
1299 | while (offset < limit) { | |
1300 | ssize_t len; | |
1301 | ||
5323f60c | 1302 | if (readn(input, &old_bev, sizeof(old_bev)) != sizeof(old_bev)) |
08d95bd2 RR |
1303 | return -1; |
1304 | ||
1305 | if (header->needs_swap) | |
1306 | perf_event_header__bswap(&old_bev.header); | |
1307 | ||
1308 | len = old_bev.header.size - sizeof(old_bev); | |
5323f60c | 1309 | if (readn(input, filename, len) != len) |
08d95bd2 RR |
1310 | return -1; |
1311 | ||
1312 | bev.header = old_bev.header; | |
1313 | ||
1314 | /* | |
1315 | * As the pid is the missing value, we need to fill | |
1316 | * it properly. The header.misc value give us nice hint. | |
1317 | */ | |
1318 | bev.pid = HOST_KERNEL_ID; | |
1319 | if (bev.header.misc == PERF_RECORD_MISC_GUEST_USER || | |
1320 | bev.header.misc == PERF_RECORD_MISC_GUEST_KERNEL) | |
1321 | bev.pid = DEFAULT_GUEST_KERNEL_ID; | |
1322 | ||
1323 | memcpy(bev.build_id, old_bev.build_id, sizeof(bev.build_id)); | |
1324 | __event_process_build_id(&bev, filename, session); | |
1325 | ||
1326 | offset += bev.header.size; | |
1327 | } | |
1328 | ||
1329 | return 0; | |
1330 | } | |
1331 | ||
1332 | static int perf_header__read_build_ids(struct perf_header *header, | |
1333 | int input, u64 offset, u64 size) | |
1334 | { | |
1335 | struct perf_session *session = container_of(header, struct perf_session, header); | |
1336 | struct build_id_event bev; | |
1337 | char filename[PATH_MAX]; | |
1338 | u64 limit = offset + size, orig_offset = offset; | |
1339 | int err = -1; | |
1340 | ||
1341 | while (offset < limit) { | |
1342 | ssize_t len; | |
1343 | ||
5323f60c | 1344 | if (readn(input, &bev, sizeof(bev)) != sizeof(bev)) |
08d95bd2 RR |
1345 | goto out; |
1346 | ||
1347 | if (header->needs_swap) | |
1348 | perf_event_header__bswap(&bev.header); | |
1349 | ||
1350 | len = bev.header.size - sizeof(bev); | |
5323f60c | 1351 | if (readn(input, filename, len) != len) |
08d95bd2 RR |
1352 | goto out; |
1353 | /* | |
1354 | * The a1645ce1 changeset: | |
1355 | * | |
1356 | * "perf: 'perf kvm' tool for monitoring guest performance from host" | |
1357 | * | |
1358 | * Added a field to struct build_id_event that broke the file | |
1359 | * format. | |
1360 | * | |
1361 | * Since the kernel build-id is the first entry, process the | |
1362 | * table using the old format if the well known | |
1363 | * '[kernel.kallsyms]' string for the kernel build-id has the | |
1364 | * first 4 characters chopped off (where the pid_t sits). | |
1365 | */ | |
1366 | if (memcmp(filename, "nel.kallsyms]", 13) == 0) { | |
1367 | if (lseek(input, orig_offset, SEEK_SET) == (off_t)-1) | |
1368 | return -1; | |
1369 | return perf_header__read_build_ids_abi_quirk(header, input, offset, size); | |
1370 | } | |
1371 | ||
1372 | __event_process_build_id(&bev, filename, session); | |
1373 | ||
1374 | offset += bev.header.size; | |
1375 | } | |
1376 | err = 0; | |
1377 | out: | |
1378 | return err; | |
1379 | } | |
1380 | ||
3d7eb86b NK |
1381 | static int process_tracing_data(struct perf_file_section *section __maybe_unused, |
1382 | struct perf_header *ph __maybe_unused, | |
1383 | int fd, void *data) | |
f1c67db7 | 1384 | { |
3dce2ce3 NK |
1385 | ssize_t ret = trace_report(fd, data, false); |
1386 | return ret < 0 ? -1 : 0; | |
f1c67db7 RR |
1387 | } |
1388 | ||
1389 | static int process_build_id(struct perf_file_section *section, | |
3d7eb86b | 1390 | struct perf_header *ph, int fd, |
1d037ca1 | 1391 | void *data __maybe_unused) |
f1c67db7 RR |
1392 | { |
1393 | if (perf_header__read_build_ids(ph, fd, section->offset, section->size)) | |
1394 | pr_debug("Failed to read buildids, continuing...\n"); | |
1395 | return 0; | |
1396 | } | |
1397 | ||
a1ae5655 | 1398 | static int process_hostname(struct perf_file_section *section __maybe_unused, |
3d7eb86b NK |
1399 | struct perf_header *ph, int fd, |
1400 | void *data __maybe_unused) | |
a1ae5655 NK |
1401 | { |
1402 | ph->env.hostname = do_read_string(fd, ph); | |
1403 | return ph->env.hostname ? 0 : -ENOMEM; | |
1404 | } | |
1405 | ||
1406 | static int process_osrelease(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1407 | struct perf_header *ph, int fd, |
1408 | void *data __maybe_unused) | |
a1ae5655 NK |
1409 | { |
1410 | ph->env.os_release = do_read_string(fd, ph); | |
1411 | return ph->env.os_release ? 0 : -ENOMEM; | |
1412 | } | |
1413 | ||
1414 | static int process_version(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1415 | struct perf_header *ph, int fd, |
1416 | void *data __maybe_unused) | |
a1ae5655 NK |
1417 | { |
1418 | ph->env.version = do_read_string(fd, ph); | |
1419 | return ph->env.version ? 0 : -ENOMEM; | |
1420 | } | |
1421 | ||
1422 | static int process_arch(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1423 | struct perf_header *ph, int fd, |
1424 | void *data __maybe_unused) | |
a1ae5655 NK |
1425 | { |
1426 | ph->env.arch = do_read_string(fd, ph); | |
1427 | return ph->env.arch ? 0 : -ENOMEM; | |
1428 | } | |
1429 | ||
1430 | static int process_nrcpus(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1431 | struct perf_header *ph, int fd, |
1432 | void *data __maybe_unused) | |
a1ae5655 | 1433 | { |
727ebd54 | 1434 | ssize_t ret; |
a1ae5655 NK |
1435 | u32 nr; |
1436 | ||
5323f60c | 1437 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1438 | if (ret != sizeof(nr)) |
1439 | return -1; | |
1440 | ||
1441 | if (ph->needs_swap) | |
1442 | nr = bswap_32(nr); | |
1443 | ||
1444 | ph->env.nr_cpus_online = nr; | |
1445 | ||
5323f60c | 1446 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1447 | if (ret != sizeof(nr)) |
1448 | return -1; | |
1449 | ||
1450 | if (ph->needs_swap) | |
1451 | nr = bswap_32(nr); | |
1452 | ||
1453 | ph->env.nr_cpus_avail = nr; | |
1454 | return 0; | |
1455 | } | |
1456 | ||
1457 | static int process_cpudesc(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1458 | struct perf_header *ph, int fd, |
1459 | void *data __maybe_unused) | |
a1ae5655 NK |
1460 | { |
1461 | ph->env.cpu_desc = do_read_string(fd, ph); | |
1462 | return ph->env.cpu_desc ? 0 : -ENOMEM; | |
1463 | } | |
1464 | ||
1465 | static int process_cpuid(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1466 | struct perf_header *ph, int fd, |
1467 | void *data __maybe_unused) | |
a1ae5655 NK |
1468 | { |
1469 | ph->env.cpuid = do_read_string(fd, ph); | |
1470 | return ph->env.cpuid ? 0 : -ENOMEM; | |
1471 | } | |
1472 | ||
1473 | static int process_total_mem(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1474 | struct perf_header *ph, int fd, |
1475 | void *data __maybe_unused) | |
a1ae5655 NK |
1476 | { |
1477 | uint64_t mem; | |
727ebd54 | 1478 | ssize_t ret; |
a1ae5655 | 1479 | |
5323f60c | 1480 | ret = readn(fd, &mem, sizeof(mem)); |
a1ae5655 NK |
1481 | if (ret != sizeof(mem)) |
1482 | return -1; | |
1483 | ||
1484 | if (ph->needs_swap) | |
1485 | mem = bswap_64(mem); | |
1486 | ||
1487 | ph->env.total_mem = mem; | |
1488 | return 0; | |
1489 | } | |
1490 | ||
7c2f7afd RR |
1491 | static struct perf_evsel * |
1492 | perf_evlist__find_by_index(struct perf_evlist *evlist, int idx) | |
1493 | { | |
1494 | struct perf_evsel *evsel; | |
1495 | ||
0050f7aa | 1496 | evlist__for_each(evlist, evsel) { |
7c2f7afd RR |
1497 | if (evsel->idx == idx) |
1498 | return evsel; | |
1499 | } | |
1500 | ||
1501 | return NULL; | |
1502 | } | |
1503 | ||
1504 | static void | |
3d7eb86b NK |
1505 | perf_evlist__set_event_name(struct perf_evlist *evlist, |
1506 | struct perf_evsel *event) | |
7c2f7afd RR |
1507 | { |
1508 | struct perf_evsel *evsel; | |
1509 | ||
1510 | if (!event->name) | |
1511 | return; | |
1512 | ||
1513 | evsel = perf_evlist__find_by_index(evlist, event->idx); | |
1514 | if (!evsel) | |
1515 | return; | |
1516 | ||
1517 | if (evsel->name) | |
1518 | return; | |
1519 | ||
1520 | evsel->name = strdup(event->name); | |
1521 | } | |
1522 | ||
1523 | static int | |
1d037ca1 | 1524 | process_event_desc(struct perf_file_section *section __maybe_unused, |
3d7eb86b | 1525 | struct perf_header *header, int fd, |
1d037ca1 | 1526 | void *data __maybe_unused) |
7c2f7afd | 1527 | { |
3d7eb86b | 1528 | struct perf_session *session; |
7c2f7afd RR |
1529 | struct perf_evsel *evsel, *events = read_event_desc(header, fd); |
1530 | ||
1531 | if (!events) | |
1532 | return 0; | |
1533 | ||
3d7eb86b | 1534 | session = container_of(header, struct perf_session, header); |
7c2f7afd RR |
1535 | for (evsel = events; evsel->attr.size; evsel++) |
1536 | perf_evlist__set_event_name(session->evlist, evsel); | |
1537 | ||
1538 | free_event_desc(events); | |
1539 | ||
1540 | return 0; | |
1541 | } | |
1542 | ||
a1ae5655 | 1543 | static int process_cmdline(struct perf_file_section *section __maybe_unused, |
3d7eb86b NK |
1544 | struct perf_header *ph, int fd, |
1545 | void *data __maybe_unused) | |
a1ae5655 | 1546 | { |
727ebd54 | 1547 | ssize_t ret; |
a1ae5655 NK |
1548 | char *str; |
1549 | u32 nr, i; | |
1550 | struct strbuf sb; | |
1551 | ||
5323f60c | 1552 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1553 | if (ret != sizeof(nr)) |
1554 | return -1; | |
1555 | ||
1556 | if (ph->needs_swap) | |
1557 | nr = bswap_32(nr); | |
1558 | ||
1559 | ph->env.nr_cmdline = nr; | |
1560 | strbuf_init(&sb, 128); | |
1561 | ||
1562 | for (i = 0; i < nr; i++) { | |
1563 | str = do_read_string(fd, ph); | |
1564 | if (!str) | |
1565 | goto error; | |
1566 | ||
1567 | /* include a NULL character at the end */ | |
1568 | strbuf_add(&sb, str, strlen(str) + 1); | |
1569 | free(str); | |
1570 | } | |
1571 | ph->env.cmdline = strbuf_detach(&sb, NULL); | |
1572 | return 0; | |
1573 | ||
1574 | error: | |
1575 | strbuf_release(&sb); | |
1576 | return -1; | |
1577 | } | |
1578 | ||
1579 | static int process_cpu_topology(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1580 | struct perf_header *ph, int fd, |
1581 | void *data __maybe_unused) | |
a1ae5655 | 1582 | { |
727ebd54 | 1583 | ssize_t ret; |
a1ae5655 NK |
1584 | u32 nr, i; |
1585 | char *str; | |
1586 | struct strbuf sb; | |
1587 | ||
5323f60c | 1588 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1589 | if (ret != sizeof(nr)) |
1590 | return -1; | |
1591 | ||
1592 | if (ph->needs_swap) | |
1593 | nr = bswap_32(nr); | |
1594 | ||
1595 | ph->env.nr_sibling_cores = nr; | |
1596 | strbuf_init(&sb, 128); | |
1597 | ||
1598 | for (i = 0; i < nr; i++) { | |
1599 | str = do_read_string(fd, ph); | |
1600 | if (!str) | |
1601 | goto error; | |
1602 | ||
1603 | /* include a NULL character at the end */ | |
1604 | strbuf_add(&sb, str, strlen(str) + 1); | |
1605 | free(str); | |
1606 | } | |
1607 | ph->env.sibling_cores = strbuf_detach(&sb, NULL); | |
1608 | ||
5323f60c | 1609 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1610 | if (ret != sizeof(nr)) |
1611 | return -1; | |
1612 | ||
1613 | if (ph->needs_swap) | |
1614 | nr = bswap_32(nr); | |
1615 | ||
1616 | ph->env.nr_sibling_threads = nr; | |
1617 | ||
1618 | for (i = 0; i < nr; i++) { | |
1619 | str = do_read_string(fd, ph); | |
1620 | if (!str) | |
1621 | goto error; | |
1622 | ||
1623 | /* include a NULL character at the end */ | |
1624 | strbuf_add(&sb, str, strlen(str) + 1); | |
1625 | free(str); | |
1626 | } | |
1627 | ph->env.sibling_threads = strbuf_detach(&sb, NULL); | |
1628 | return 0; | |
1629 | ||
1630 | error: | |
1631 | strbuf_release(&sb); | |
1632 | return -1; | |
1633 | } | |
1634 | ||
1635 | static int process_numa_topology(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1636 | struct perf_header *ph, int fd, |
1637 | void *data __maybe_unused) | |
a1ae5655 | 1638 | { |
727ebd54 | 1639 | ssize_t ret; |
a1ae5655 NK |
1640 | u32 nr, node, i; |
1641 | char *str; | |
1642 | uint64_t mem_total, mem_free; | |
1643 | struct strbuf sb; | |
1644 | ||
1645 | /* nr nodes */ | |
5323f60c | 1646 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1647 | if (ret != sizeof(nr)) |
1648 | goto error; | |
1649 | ||
1650 | if (ph->needs_swap) | |
1651 | nr = bswap_32(nr); | |
1652 | ||
1653 | ph->env.nr_numa_nodes = nr; | |
1654 | strbuf_init(&sb, 256); | |
1655 | ||
1656 | for (i = 0; i < nr; i++) { | |
1657 | /* node number */ | |
5323f60c | 1658 | ret = readn(fd, &node, sizeof(node)); |
a1ae5655 NK |
1659 | if (ret != sizeof(node)) |
1660 | goto error; | |
1661 | ||
5323f60c | 1662 | ret = readn(fd, &mem_total, sizeof(u64)); |
a1ae5655 NK |
1663 | if (ret != sizeof(u64)) |
1664 | goto error; | |
1665 | ||
5323f60c | 1666 | ret = readn(fd, &mem_free, sizeof(u64)); |
a1ae5655 NK |
1667 | if (ret != sizeof(u64)) |
1668 | goto error; | |
1669 | ||
1670 | if (ph->needs_swap) { | |
1671 | node = bswap_32(node); | |
1672 | mem_total = bswap_64(mem_total); | |
1673 | mem_free = bswap_64(mem_free); | |
1674 | } | |
1675 | ||
1676 | strbuf_addf(&sb, "%u:%"PRIu64":%"PRIu64":", | |
1677 | node, mem_total, mem_free); | |
1678 | ||
1679 | str = do_read_string(fd, ph); | |
1680 | if (!str) | |
1681 | goto error; | |
1682 | ||
1683 | /* include a NULL character at the end */ | |
1684 | strbuf_add(&sb, str, strlen(str) + 1); | |
1685 | free(str); | |
1686 | } | |
1687 | ph->env.numa_nodes = strbuf_detach(&sb, NULL); | |
1688 | return 0; | |
1689 | ||
1690 | error: | |
1691 | strbuf_release(&sb); | |
1692 | return -1; | |
1693 | } | |
1694 | ||
1695 | static int process_pmu_mappings(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1696 | struct perf_header *ph, int fd, |
1697 | void *data __maybe_unused) | |
a1ae5655 | 1698 | { |
727ebd54 | 1699 | ssize_t ret; |
a1ae5655 NK |
1700 | char *name; |
1701 | u32 pmu_num; | |
1702 | u32 type; | |
1703 | struct strbuf sb; | |
1704 | ||
5323f60c | 1705 | ret = readn(fd, &pmu_num, sizeof(pmu_num)); |
a1ae5655 NK |
1706 | if (ret != sizeof(pmu_num)) |
1707 | return -1; | |
1708 | ||
1709 | if (ph->needs_swap) | |
1710 | pmu_num = bswap_32(pmu_num); | |
1711 | ||
1712 | if (!pmu_num) { | |
1713 | pr_debug("pmu mappings not available\n"); | |
1714 | return 0; | |
1715 | } | |
1716 | ||
1717 | ph->env.nr_pmu_mappings = pmu_num; | |
1718 | strbuf_init(&sb, 128); | |
1719 | ||
1720 | while (pmu_num) { | |
5323f60c | 1721 | if (readn(fd, &type, sizeof(type)) != sizeof(type)) |
a1ae5655 NK |
1722 | goto error; |
1723 | if (ph->needs_swap) | |
1724 | type = bswap_32(type); | |
1725 | ||
1726 | name = do_read_string(fd, ph); | |
1727 | if (!name) | |
1728 | goto error; | |
1729 | ||
1730 | strbuf_addf(&sb, "%u:%s", type, name); | |
1731 | /* include a NULL character at the end */ | |
1732 | strbuf_add(&sb, "", 1); | |
1733 | ||
1734 | free(name); | |
1735 | pmu_num--; | |
1736 | } | |
1737 | ph->env.pmu_mappings = strbuf_detach(&sb, NULL); | |
1738 | return 0; | |
1739 | ||
1740 | error: | |
1741 | strbuf_release(&sb); | |
1742 | return -1; | |
1743 | } | |
1744 | ||
a8bb559b NK |
1745 | static int process_group_desc(struct perf_file_section *section __maybe_unused, |
1746 | struct perf_header *ph, int fd, | |
1747 | void *data __maybe_unused) | |
1748 | { | |
1749 | size_t ret = -1; | |
1750 | u32 i, nr, nr_groups; | |
1751 | struct perf_session *session; | |
1752 | struct perf_evsel *evsel, *leader = NULL; | |
1753 | struct group_desc { | |
1754 | char *name; | |
1755 | u32 leader_idx; | |
1756 | u32 nr_members; | |
1757 | } *desc; | |
1758 | ||
1759 | if (readn(fd, &nr_groups, sizeof(nr_groups)) != sizeof(nr_groups)) | |
1760 | return -1; | |
1761 | ||
1762 | if (ph->needs_swap) | |
1763 | nr_groups = bswap_32(nr_groups); | |
1764 | ||
1765 | ph->env.nr_groups = nr_groups; | |
1766 | if (!nr_groups) { | |
1767 | pr_debug("group desc not available\n"); | |
1768 | return 0; | |
1769 | } | |
1770 | ||
1771 | desc = calloc(nr_groups, sizeof(*desc)); | |
1772 | if (!desc) | |
1773 | return -1; | |
1774 | ||
1775 | for (i = 0; i < nr_groups; i++) { | |
1776 | desc[i].name = do_read_string(fd, ph); | |
1777 | if (!desc[i].name) | |
1778 | goto out_free; | |
1779 | ||
1780 | if (readn(fd, &desc[i].leader_idx, sizeof(u32)) != sizeof(u32)) | |
1781 | goto out_free; | |
1782 | ||
1783 | if (readn(fd, &desc[i].nr_members, sizeof(u32)) != sizeof(u32)) | |
1784 | goto out_free; | |
1785 | ||
1786 | if (ph->needs_swap) { | |
1787 | desc[i].leader_idx = bswap_32(desc[i].leader_idx); | |
1788 | desc[i].nr_members = bswap_32(desc[i].nr_members); | |
1789 | } | |
1790 | } | |
1791 | ||
1792 | /* | |
1793 | * Rebuild group relationship based on the group_desc | |
1794 | */ | |
1795 | session = container_of(ph, struct perf_session, header); | |
1796 | session->evlist->nr_groups = nr_groups; | |
1797 | ||
1798 | i = nr = 0; | |
0050f7aa | 1799 | evlist__for_each(session->evlist, evsel) { |
a8bb559b NK |
1800 | if (evsel->idx == (int) desc[i].leader_idx) { |
1801 | evsel->leader = evsel; | |
1802 | /* {anon_group} is a dummy name */ | |
210e812f | 1803 | if (strcmp(desc[i].name, "{anon_group}")) { |
a8bb559b | 1804 | evsel->group_name = desc[i].name; |
210e812f NK |
1805 | desc[i].name = NULL; |
1806 | } | |
a8bb559b NK |
1807 | evsel->nr_members = desc[i].nr_members; |
1808 | ||
1809 | if (i >= nr_groups || nr > 0) { | |
1810 | pr_debug("invalid group desc\n"); | |
1811 | goto out_free; | |
1812 | } | |
1813 | ||
1814 | leader = evsel; | |
1815 | nr = evsel->nr_members - 1; | |
1816 | i++; | |
1817 | } else if (nr) { | |
1818 | /* This is a group member */ | |
1819 | evsel->leader = leader; | |
1820 | ||
1821 | nr--; | |
1822 | } | |
1823 | } | |
1824 | ||
1825 | if (i != nr_groups || nr != 0) { | |
1826 | pr_debug("invalid group desc\n"); | |
1827 | goto out_free; | |
1828 | } | |
1829 | ||
1830 | ret = 0; | |
1831 | out_free: | |
50a2740b | 1832 | for (i = 0; i < nr_groups; i++) |
74cf249d | 1833 | zfree(&desc[i].name); |
a8bb559b NK |
1834 | free(desc); |
1835 | ||
1836 | return ret; | |
1837 | } | |
1838 | ||
fbe96f29 SE |
1839 | struct feature_ops { |
1840 | int (*write)(int fd, struct perf_header *h, struct perf_evlist *evlist); | |
1841 | void (*print)(struct perf_header *h, int fd, FILE *fp); | |
f1c67db7 | 1842 | int (*process)(struct perf_file_section *section, |
3d7eb86b | 1843 | struct perf_header *h, int fd, void *data); |
fbe96f29 SE |
1844 | const char *name; |
1845 | bool full_only; | |
1846 | }; | |
1847 | ||
8cdfa78a RR |
1848 | #define FEAT_OPA(n, func) \ |
1849 | [n] = { .name = #n, .write = write_##func, .print = print_##func } | |
f1c67db7 RR |
1850 | #define FEAT_OPP(n, func) \ |
1851 | [n] = { .name = #n, .write = write_##func, .print = print_##func, \ | |
1852 | .process = process_##func } | |
8cdfa78a | 1853 | #define FEAT_OPF(n, func) \ |
f1c67db7 | 1854 | [n] = { .name = #n, .write = write_##func, .print = print_##func, \ |
a1ae5655 | 1855 | .process = process_##func, .full_only = true } |
8cdfa78a RR |
1856 | |
1857 | /* feature_ops not implemented: */ | |
2eeaaa09 SE |
1858 | #define print_tracing_data NULL |
1859 | #define print_build_id NULL | |
fbe96f29 SE |
1860 | |
1861 | static const struct feature_ops feat_ops[HEADER_LAST_FEATURE] = { | |
2eeaaa09 | 1862 | FEAT_OPP(HEADER_TRACING_DATA, tracing_data), |
f1c67db7 | 1863 | FEAT_OPP(HEADER_BUILD_ID, build_id), |
a1ae5655 NK |
1864 | FEAT_OPP(HEADER_HOSTNAME, hostname), |
1865 | FEAT_OPP(HEADER_OSRELEASE, osrelease), | |
1866 | FEAT_OPP(HEADER_VERSION, version), | |
1867 | FEAT_OPP(HEADER_ARCH, arch), | |
1868 | FEAT_OPP(HEADER_NRCPUS, nrcpus), | |
1869 | FEAT_OPP(HEADER_CPUDESC, cpudesc), | |
37e9d750 | 1870 | FEAT_OPP(HEADER_CPUID, cpuid), |
a1ae5655 | 1871 | FEAT_OPP(HEADER_TOTAL_MEM, total_mem), |
7c2f7afd | 1872 | FEAT_OPP(HEADER_EVENT_DESC, event_desc), |
a1ae5655 | 1873 | FEAT_OPP(HEADER_CMDLINE, cmdline), |
8cdfa78a RR |
1874 | FEAT_OPF(HEADER_CPU_TOPOLOGY, cpu_topology), |
1875 | FEAT_OPF(HEADER_NUMA_TOPOLOGY, numa_topology), | |
330aa675 | 1876 | FEAT_OPA(HEADER_BRANCH_STACK, branch_stack), |
a1ae5655 | 1877 | FEAT_OPP(HEADER_PMU_MAPPINGS, pmu_mappings), |
a8bb559b | 1878 | FEAT_OPP(HEADER_GROUP_DESC, group_desc), |
fbe96f29 SE |
1879 | }; |
1880 | ||
1881 | struct header_print_data { | |
1882 | FILE *fp; | |
1883 | bool full; /* extended list of headers */ | |
1884 | }; | |
1885 | ||
1886 | static int perf_file_section__fprintf_info(struct perf_file_section *section, | |
1887 | struct perf_header *ph, | |
1888 | int feat, int fd, void *data) | |
1889 | { | |
1890 | struct header_print_data *hd = data; | |
1891 | ||
1892 | if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) { | |
1893 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " | |
1894 | "%d, continuing...\n", section->offset, feat); | |
1895 | return 0; | |
1896 | } | |
b1e5a9be | 1897 | if (feat >= HEADER_LAST_FEATURE) { |
fbe96f29 | 1898 | pr_warning("unknown feature %d\n", feat); |
f7a8a133 | 1899 | return 0; |
fbe96f29 SE |
1900 | } |
1901 | if (!feat_ops[feat].print) | |
1902 | return 0; | |
1903 | ||
1904 | if (!feat_ops[feat].full_only || hd->full) | |
1905 | feat_ops[feat].print(ph, fd, hd->fp); | |
1906 | else | |
1907 | fprintf(hd->fp, "# %s info available, use -I to display\n", | |
1908 | feat_ops[feat].name); | |
1909 | ||
1910 | return 0; | |
1911 | } | |
1912 | ||
1913 | int perf_header__fprintf_info(struct perf_session *session, FILE *fp, bool full) | |
1914 | { | |
1915 | struct header_print_data hd; | |
1916 | struct perf_header *header = &session->header; | |
cc9784bd | 1917 | int fd = perf_data_file__fd(session->file); |
fbe96f29 SE |
1918 | hd.fp = fp; |
1919 | hd.full = full; | |
1920 | ||
1921 | perf_header__process_sections(header, fd, &hd, | |
1922 | perf_file_section__fprintf_info); | |
1923 | return 0; | |
1924 | } | |
1925 | ||
fbe96f29 SE |
1926 | static int do_write_feat(int fd, struct perf_header *h, int type, |
1927 | struct perf_file_section **p, | |
1928 | struct perf_evlist *evlist) | |
1929 | { | |
1930 | int err; | |
1931 | int ret = 0; | |
1932 | ||
1933 | if (perf_header__has_feat(h, type)) { | |
b1e5a9be RR |
1934 | if (!feat_ops[type].write) |
1935 | return -1; | |
fbe96f29 SE |
1936 | |
1937 | (*p)->offset = lseek(fd, 0, SEEK_CUR); | |
1938 | ||
1939 | err = feat_ops[type].write(fd, h, evlist); | |
1940 | if (err < 0) { | |
1941 | pr_debug("failed to write feature %d\n", type); | |
1942 | ||
1943 | /* undo anything written */ | |
1944 | lseek(fd, (*p)->offset, SEEK_SET); | |
1945 | ||
1946 | return -1; | |
1947 | } | |
1948 | (*p)->size = lseek(fd, 0, SEEK_CUR) - (*p)->offset; | |
1949 | (*p)++; | |
1950 | } | |
1951 | return ret; | |
1952 | } | |
1953 | ||
1c0b04d1 | 1954 | static int perf_header__adds_write(struct perf_header *header, |
361c99a6 | 1955 | struct perf_evlist *evlist, int fd) |
2ba08250 | 1956 | { |
9e827dd0 | 1957 | int nr_sections; |
fbe96f29 | 1958 | struct perf_file_section *feat_sec, *p; |
9e827dd0 FW |
1959 | int sec_size; |
1960 | u64 sec_start; | |
b1e5a9be | 1961 | int feat; |
fbe96f29 | 1962 | int err; |
9e827dd0 | 1963 | |
1c0b04d1 | 1964 | nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS); |
9e827dd0 | 1965 | if (!nr_sections) |
d5eed904 | 1966 | return 0; |
9e827dd0 | 1967 | |
91b98804 | 1968 | feat_sec = p = calloc(nr_sections, sizeof(*feat_sec)); |
d5eed904 ACM |
1969 | if (feat_sec == NULL) |
1970 | return -ENOMEM; | |
9e827dd0 FW |
1971 | |
1972 | sec_size = sizeof(*feat_sec) * nr_sections; | |
1973 | ||
8d541e97 | 1974 | sec_start = header->feat_offset; |
f887f301 | 1975 | lseek(fd, sec_start + sec_size, SEEK_SET); |
2ba08250 | 1976 | |
b1e5a9be RR |
1977 | for_each_set_bit(feat, header->adds_features, HEADER_FEAT_BITS) { |
1978 | if (do_write_feat(fd, header, feat, &p, evlist)) | |
1979 | perf_header__clear_feat(header, feat); | |
1980 | } | |
9e827dd0 | 1981 | |
f887f301 | 1982 | lseek(fd, sec_start, SEEK_SET); |
fbe96f29 SE |
1983 | /* |
1984 | * may write more than needed due to dropped feature, but | |
1985 | * this is okay, reader will skip the mising entries | |
1986 | */ | |
d5eed904 ACM |
1987 | err = do_write(fd, feat_sec, sec_size); |
1988 | if (err < 0) | |
1989 | pr_debug("failed to write feature section\n"); | |
9e827dd0 | 1990 | free(feat_sec); |
d5eed904 | 1991 | return err; |
9e827dd0 | 1992 | } |
2ba08250 | 1993 | |
8dc58101 TZ |
1994 | int perf_header__write_pipe(int fd) |
1995 | { | |
1996 | struct perf_pipe_file_header f_header; | |
1997 | int err; | |
1998 | ||
1999 | f_header = (struct perf_pipe_file_header){ | |
2000 | .magic = PERF_MAGIC, | |
2001 | .size = sizeof(f_header), | |
2002 | }; | |
2003 | ||
2004 | err = do_write(fd, &f_header, sizeof(f_header)); | |
2005 | if (err < 0) { | |
2006 | pr_debug("failed to write perf pipe header\n"); | |
2007 | return err; | |
2008 | } | |
2009 | ||
2010 | return 0; | |
2011 | } | |
2012 | ||
a91e5431 ACM |
2013 | int perf_session__write_header(struct perf_session *session, |
2014 | struct perf_evlist *evlist, | |
2015 | int fd, bool at_exit) | |
7c6a1c65 PZ |
2016 | { |
2017 | struct perf_file_header f_header; | |
2018 | struct perf_file_attr f_attr; | |
1c0b04d1 | 2019 | struct perf_header *header = &session->header; |
563aecb2 | 2020 | struct perf_evsel *evsel; |
944d62ba | 2021 | u64 attr_offset; |
a91e5431 | 2022 | int err; |
7c6a1c65 PZ |
2023 | |
2024 | lseek(fd, sizeof(f_header), SEEK_SET); | |
2025 | ||
0050f7aa | 2026 | evlist__for_each(session->evlist, evsel) { |
6606f873 RR |
2027 | evsel->id_offset = lseek(fd, 0, SEEK_CUR); |
2028 | err = do_write(fd, evsel->id, evsel->ids * sizeof(u64)); | |
d5eed904 ACM |
2029 | if (err < 0) { |
2030 | pr_debug("failed to write perf header\n"); | |
2031 | return err; | |
2032 | } | |
7c6a1c65 PZ |
2033 | } |
2034 | ||
944d62ba | 2035 | attr_offset = lseek(fd, 0, SEEK_CUR); |
7c6a1c65 | 2036 | |
0050f7aa | 2037 | evlist__for_each(evlist, evsel) { |
7c6a1c65 | 2038 | f_attr = (struct perf_file_attr){ |
6606f873 | 2039 | .attr = evsel->attr, |
7c6a1c65 | 2040 | .ids = { |
6606f873 RR |
2041 | .offset = evsel->id_offset, |
2042 | .size = evsel->ids * sizeof(u64), | |
7c6a1c65 PZ |
2043 | } |
2044 | }; | |
d5eed904 ACM |
2045 | err = do_write(fd, &f_attr, sizeof(f_attr)); |
2046 | if (err < 0) { | |
2047 | pr_debug("failed to write perf header attribute\n"); | |
2048 | return err; | |
2049 | } | |
7c6a1c65 PZ |
2050 | } |
2051 | ||
d645c442 AH |
2052 | if (!header->data_offset) |
2053 | header->data_offset = lseek(fd, 0, SEEK_CUR); | |
8d541e97 | 2054 | header->feat_offset = header->data_offset + header->data_size; |
7c6a1c65 | 2055 | |
d5eed904 | 2056 | if (at_exit) { |
1c0b04d1 | 2057 | err = perf_header__adds_write(header, evlist, fd); |
d5eed904 ACM |
2058 | if (err < 0) |
2059 | return err; | |
2060 | } | |
9e827dd0 | 2061 | |
7c6a1c65 PZ |
2062 | f_header = (struct perf_file_header){ |
2063 | .magic = PERF_MAGIC, | |
2064 | .size = sizeof(f_header), | |
2065 | .attr_size = sizeof(f_attr), | |
2066 | .attrs = { | |
944d62ba | 2067 | .offset = attr_offset, |
a91e5431 | 2068 | .size = evlist->nr_entries * sizeof(f_attr), |
7c6a1c65 PZ |
2069 | }, |
2070 | .data = { | |
1c0b04d1 ACM |
2071 | .offset = header->data_offset, |
2072 | .size = header->data_size, | |
7c6a1c65 | 2073 | }, |
44b3c578 | 2074 | /* event_types is ignored, store zeros */ |
7c6a1c65 PZ |
2075 | }; |
2076 | ||
1c0b04d1 | 2077 | memcpy(&f_header.adds_features, &header->adds_features, sizeof(header->adds_features)); |
2ba08250 | 2078 | |
7c6a1c65 | 2079 | lseek(fd, 0, SEEK_SET); |
d5eed904 ACM |
2080 | err = do_write(fd, &f_header, sizeof(f_header)); |
2081 | if (err < 0) { | |
2082 | pr_debug("failed to write perf header\n"); | |
2083 | return err; | |
2084 | } | |
1c0b04d1 | 2085 | lseek(fd, header->data_offset + header->data_size, SEEK_SET); |
7c6a1c65 | 2086 | |
d5eed904 | 2087 | return 0; |
7c6a1c65 PZ |
2088 | } |
2089 | ||
1c0b04d1 | 2090 | static int perf_header__getbuffer64(struct perf_header *header, |
ba21594c ACM |
2091 | int fd, void *buf, size_t size) |
2092 | { | |
1e7972cc | 2093 | if (readn(fd, buf, size) <= 0) |
ba21594c ACM |
2094 | return -1; |
2095 | ||
1c0b04d1 | 2096 | if (header->needs_swap) |
ba21594c ACM |
2097 | mem_bswap_64(buf, size); |
2098 | ||
2099 | return 0; | |
2100 | } | |
2101 | ||
1c0b04d1 | 2102 | int perf_header__process_sections(struct perf_header *header, int fd, |
fbe96f29 | 2103 | void *data, |
1c0b04d1 | 2104 | int (*process)(struct perf_file_section *section, |
b1e5a9be RR |
2105 | struct perf_header *ph, |
2106 | int feat, int fd, void *data)) | |
2ba08250 | 2107 | { |
b1e5a9be | 2108 | struct perf_file_section *feat_sec, *sec; |
9e827dd0 FW |
2109 | int nr_sections; |
2110 | int sec_size; | |
b1e5a9be RR |
2111 | int feat; |
2112 | int err; | |
9e827dd0 | 2113 | |
1c0b04d1 | 2114 | nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS); |
9e827dd0 | 2115 | if (!nr_sections) |
37562eac | 2116 | return 0; |
9e827dd0 | 2117 | |
91b98804 | 2118 | feat_sec = sec = calloc(nr_sections, sizeof(*feat_sec)); |
9e827dd0 | 2119 | if (!feat_sec) |
37562eac | 2120 | return -1; |
9e827dd0 FW |
2121 | |
2122 | sec_size = sizeof(*feat_sec) * nr_sections; | |
2123 | ||
8d541e97 | 2124 | lseek(fd, header->feat_offset, SEEK_SET); |
9e827dd0 | 2125 | |
b1e5a9be RR |
2126 | err = perf_header__getbuffer64(header, fd, feat_sec, sec_size); |
2127 | if (err < 0) | |
769885f3 | 2128 | goto out_free; |
9e827dd0 | 2129 | |
b1e5a9be RR |
2130 | for_each_set_bit(feat, header->adds_features, HEADER_LAST_FEATURE) { |
2131 | err = process(sec++, header, feat, fd, data); | |
2132 | if (err < 0) | |
2133 | goto out_free; | |
2ba08250 | 2134 | } |
b1e5a9be | 2135 | err = 0; |
769885f3 | 2136 | out_free: |
37562eac ACM |
2137 | free(feat_sec); |
2138 | return err; | |
769885f3 | 2139 | } |
4778d2e4 | 2140 | |
114382a0 SE |
2141 | static const int attr_file_abi_sizes[] = { |
2142 | [0] = PERF_ATTR_SIZE_VER0, | |
2143 | [1] = PERF_ATTR_SIZE_VER1, | |
239cc478 | 2144 | [2] = PERF_ATTR_SIZE_VER2, |
0f6a3015 | 2145 | [3] = PERF_ATTR_SIZE_VER3, |
114382a0 SE |
2146 | 0, |
2147 | }; | |
2148 | ||
2149 | /* | |
2150 | * In the legacy file format, the magic number is not used to encode endianness. | |
2151 | * hdr_sz was used to encode endianness. But given that hdr_sz can vary based | |
2152 | * on ABI revisions, we need to try all combinations for all endianness to | |
2153 | * detect the endianness. | |
2154 | */ | |
2155 | static int try_all_file_abis(uint64_t hdr_sz, struct perf_header *ph) | |
73323f54 | 2156 | { |
114382a0 SE |
2157 | uint64_t ref_size, attr_size; |
2158 | int i; | |
73323f54 | 2159 | |
114382a0 SE |
2160 | for (i = 0 ; attr_file_abi_sizes[i]; i++) { |
2161 | ref_size = attr_file_abi_sizes[i] | |
2162 | + sizeof(struct perf_file_section); | |
2163 | if (hdr_sz != ref_size) { | |
2164 | attr_size = bswap_64(hdr_sz); | |
2165 | if (attr_size != ref_size) | |
2166 | continue; | |
73323f54 | 2167 | |
114382a0 SE |
2168 | ph->needs_swap = true; |
2169 | } | |
2170 | pr_debug("ABI%d perf.data file detected, need_swap=%d\n", | |
2171 | i, | |
2172 | ph->needs_swap); | |
2173 | return 0; | |
2174 | } | |
2175 | /* could not determine endianness */ | |
2176 | return -1; | |
2177 | } | |
73323f54 | 2178 | |
114382a0 SE |
2179 | #define PERF_PIPE_HDR_VER0 16 |
2180 | ||
2181 | static const size_t attr_pipe_abi_sizes[] = { | |
2182 | [0] = PERF_PIPE_HDR_VER0, | |
2183 | 0, | |
2184 | }; | |
2185 | ||
2186 | /* | |
2187 | * In the legacy pipe format, there is an implicit assumption that endiannesss | |
2188 | * between host recording the samples, and host parsing the samples is the | |
2189 | * same. This is not always the case given that the pipe output may always be | |
2190 | * redirected into a file and analyzed on a different machine with possibly a | |
2191 | * different endianness and perf_event ABI revsions in the perf tool itself. | |
2192 | */ | |
2193 | static int try_all_pipe_abis(uint64_t hdr_sz, struct perf_header *ph) | |
2194 | { | |
2195 | u64 attr_size; | |
2196 | int i; | |
2197 | ||
2198 | for (i = 0 ; attr_pipe_abi_sizes[i]; i++) { | |
2199 | if (hdr_sz != attr_pipe_abi_sizes[i]) { | |
2200 | attr_size = bswap_64(hdr_sz); | |
2201 | if (attr_size != hdr_sz) | |
2202 | continue; | |
73323f54 SE |
2203 | |
2204 | ph->needs_swap = true; | |
2205 | } | |
114382a0 | 2206 | pr_debug("Pipe ABI%d perf.data file detected\n", i); |
73323f54 SE |
2207 | return 0; |
2208 | } | |
114382a0 SE |
2209 | return -1; |
2210 | } | |
2211 | ||
e84ba4e2 FT |
2212 | bool is_perf_magic(u64 magic) |
2213 | { | |
2214 | if (!memcmp(&magic, __perf_magic1, sizeof(magic)) | |
2215 | || magic == __perf_magic2 | |
2216 | || magic == __perf_magic2_sw) | |
2217 | return true; | |
2218 | ||
2219 | return false; | |
2220 | } | |
2221 | ||
114382a0 SE |
2222 | static int check_magic_endian(u64 magic, uint64_t hdr_sz, |
2223 | bool is_pipe, struct perf_header *ph) | |
2224 | { | |
2225 | int ret; | |
2226 | ||
2227 | /* check for legacy format */ | |
2228 | ret = memcmp(&magic, __perf_magic1, sizeof(magic)); | |
2229 | if (ret == 0) { | |
2a08c3ec | 2230 | ph->version = PERF_HEADER_VERSION_1; |
114382a0 SE |
2231 | pr_debug("legacy perf.data format\n"); |
2232 | if (is_pipe) | |
2233 | return try_all_pipe_abis(hdr_sz, ph); | |
2234 | ||
2235 | return try_all_file_abis(hdr_sz, ph); | |
2236 | } | |
2237 | /* | |
2238 | * the new magic number serves two purposes: | |
2239 | * - unique number to identify actual perf.data files | |
2240 | * - encode endianness of file | |
2241 | */ | |
73323f54 | 2242 | |
114382a0 SE |
2243 | /* check magic number with one endianness */ |
2244 | if (magic == __perf_magic2) | |
73323f54 SE |
2245 | return 0; |
2246 | ||
114382a0 SE |
2247 | /* check magic number with opposite endianness */ |
2248 | if (magic != __perf_magic2_sw) | |
73323f54 SE |
2249 | return -1; |
2250 | ||
2251 | ph->needs_swap = true; | |
2a08c3ec | 2252 | ph->version = PERF_HEADER_VERSION_2; |
73323f54 SE |
2253 | |
2254 | return 0; | |
2255 | } | |
2256 | ||
1c0b04d1 | 2257 | int perf_file_header__read(struct perf_file_header *header, |
37562eac ACM |
2258 | struct perf_header *ph, int fd) |
2259 | { | |
727ebd54 | 2260 | ssize_t ret; |
73323f54 | 2261 | |
37562eac | 2262 | lseek(fd, 0, SEEK_SET); |
37562eac | 2263 | |
73323f54 SE |
2264 | ret = readn(fd, header, sizeof(*header)); |
2265 | if (ret <= 0) | |
37562eac ACM |
2266 | return -1; |
2267 | ||
114382a0 SE |
2268 | if (check_magic_endian(header->magic, |
2269 | header->attr_size, false, ph) < 0) { | |
2270 | pr_debug("magic/endian check failed\n"); | |
73323f54 | 2271 | return -1; |
114382a0 | 2272 | } |
ba21594c | 2273 | |
73323f54 | 2274 | if (ph->needs_swap) { |
1c0b04d1 | 2275 | mem_bswap_64(header, offsetof(struct perf_file_header, |
73323f54 | 2276 | adds_features)); |
ba21594c ACM |
2277 | } |
2278 | ||
1c0b04d1 | 2279 | if (header->size != sizeof(*header)) { |
37562eac | 2280 | /* Support the previous format */ |
1c0b04d1 ACM |
2281 | if (header->size == offsetof(typeof(*header), adds_features)) |
2282 | bitmap_zero(header->adds_features, HEADER_FEAT_BITS); | |
37562eac ACM |
2283 | else |
2284 | return -1; | |
d327fa43 | 2285 | } else if (ph->needs_swap) { |
d327fa43 DA |
2286 | /* |
2287 | * feature bitmap is declared as an array of unsigned longs -- | |
2288 | * not good since its size can differ between the host that | |
2289 | * generated the data file and the host analyzing the file. | |
2290 | * | |
2291 | * We need to handle endianness, but we don't know the size of | |
2292 | * the unsigned long where the file was generated. Take a best | |
2293 | * guess at determining it: try 64-bit swap first (ie., file | |
2294 | * created on a 64-bit host), and check if the hostname feature | |
2295 | * bit is set (this feature bit is forced on as of fbe96f2). | |
2296 | * If the bit is not, undo the 64-bit swap and try a 32-bit | |
2297 | * swap. If the hostname bit is still not set (e.g., older data | |
2298 | * file), punt and fallback to the original behavior -- | |
2299 | * clearing all feature bits and setting buildid. | |
2300 | */ | |
80c0120a DA |
2301 | mem_bswap_64(&header->adds_features, |
2302 | BITS_TO_U64(HEADER_FEAT_BITS)); | |
d327fa43 DA |
2303 | |
2304 | if (!test_bit(HEADER_HOSTNAME, header->adds_features)) { | |
80c0120a DA |
2305 | /* unswap as u64 */ |
2306 | mem_bswap_64(&header->adds_features, | |
2307 | BITS_TO_U64(HEADER_FEAT_BITS)); | |
2308 | ||
2309 | /* unswap as u32 */ | |
2310 | mem_bswap_32(&header->adds_features, | |
2311 | BITS_TO_U32(HEADER_FEAT_BITS)); | |
d327fa43 DA |
2312 | } |
2313 | ||
2314 | if (!test_bit(HEADER_HOSTNAME, header->adds_features)) { | |
2315 | bitmap_zero(header->adds_features, HEADER_FEAT_BITS); | |
2316 | set_bit(HEADER_BUILD_ID, header->adds_features); | |
2317 | } | |
4778d2e4 | 2318 | } |
9e827dd0 | 2319 | |
1c0b04d1 | 2320 | memcpy(&ph->adds_features, &header->adds_features, |
ba21594c | 2321 | sizeof(ph->adds_features)); |
37562eac | 2322 | |
1c0b04d1 ACM |
2323 | ph->data_offset = header->data.offset; |
2324 | ph->data_size = header->data.size; | |
8d541e97 | 2325 | ph->feat_offset = header->data.offset + header->data.size; |
37562eac ACM |
2326 | return 0; |
2327 | } | |
2328 | ||
1c0b04d1 | 2329 | static int perf_file_section__process(struct perf_file_section *section, |
ba21594c | 2330 | struct perf_header *ph, |
da378962 | 2331 | int feat, int fd, void *data) |
37562eac | 2332 | { |
1c0b04d1 | 2333 | if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) { |
9486aa38 | 2334 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " |
1c0b04d1 | 2335 | "%d, continuing...\n", section->offset, feat); |
37562eac ACM |
2336 | return 0; |
2337 | } | |
2338 | ||
b1e5a9be RR |
2339 | if (feat >= HEADER_LAST_FEATURE) { |
2340 | pr_debug("unknown feature %d, continuing...\n", feat); | |
2341 | return 0; | |
2342 | } | |
2343 | ||
f1c67db7 RR |
2344 | if (!feat_ops[feat].process) |
2345 | return 0; | |
37562eac | 2346 | |
3d7eb86b | 2347 | return feat_ops[feat].process(section, ph, fd, data); |
37562eac | 2348 | } |
2ba08250 | 2349 | |
1c0b04d1 | 2350 | static int perf_file_header__read_pipe(struct perf_pipe_file_header *header, |
454c407e TZ |
2351 | struct perf_header *ph, int fd, |
2352 | bool repipe) | |
7c6a1c65 | 2353 | { |
727ebd54 | 2354 | ssize_t ret; |
73323f54 SE |
2355 | |
2356 | ret = readn(fd, header, sizeof(*header)); | |
2357 | if (ret <= 0) | |
2358 | return -1; | |
2359 | ||
114382a0 SE |
2360 | if (check_magic_endian(header->magic, header->size, true, ph) < 0) { |
2361 | pr_debug("endian/magic failed\n"); | |
8dc58101 | 2362 | return -1; |
114382a0 SE |
2363 | } |
2364 | ||
2365 | if (ph->needs_swap) | |
2366 | header->size = bswap_64(header->size); | |
8dc58101 | 2367 | |
1c0b04d1 | 2368 | if (repipe && do_write(STDOUT_FILENO, header, sizeof(*header)) < 0) |
454c407e TZ |
2369 | return -1; |
2370 | ||
8dc58101 TZ |
2371 | return 0; |
2372 | } | |
2373 | ||
d4339569 | 2374 | static int perf_header__read_pipe(struct perf_session *session) |
8dc58101 | 2375 | { |
1c0b04d1 | 2376 | struct perf_header *header = &session->header; |
8dc58101 TZ |
2377 | struct perf_pipe_file_header f_header; |
2378 | ||
cc9784bd JO |
2379 | if (perf_file_header__read_pipe(&f_header, header, |
2380 | perf_data_file__fd(session->file), | |
454c407e | 2381 | session->repipe) < 0) { |
8dc58101 TZ |
2382 | pr_debug("incompatible file format\n"); |
2383 | return -EINVAL; | |
2384 | } | |
2385 | ||
8dc58101 TZ |
2386 | return 0; |
2387 | } | |
2388 | ||
69996df4 SE |
2389 | static int read_attr(int fd, struct perf_header *ph, |
2390 | struct perf_file_attr *f_attr) | |
2391 | { | |
2392 | struct perf_event_attr *attr = &f_attr->attr; | |
2393 | size_t sz, left; | |
2394 | size_t our_sz = sizeof(f_attr->attr); | |
727ebd54 | 2395 | ssize_t ret; |
69996df4 SE |
2396 | |
2397 | memset(f_attr, 0, sizeof(*f_attr)); | |
2398 | ||
2399 | /* read minimal guaranteed structure */ | |
2400 | ret = readn(fd, attr, PERF_ATTR_SIZE_VER0); | |
2401 | if (ret <= 0) { | |
2402 | pr_debug("cannot read %d bytes of header attr\n", | |
2403 | PERF_ATTR_SIZE_VER0); | |
2404 | return -1; | |
2405 | } | |
2406 | ||
2407 | /* on file perf_event_attr size */ | |
2408 | sz = attr->size; | |
114382a0 | 2409 | |
69996df4 SE |
2410 | if (ph->needs_swap) |
2411 | sz = bswap_32(sz); | |
2412 | ||
2413 | if (sz == 0) { | |
2414 | /* assume ABI0 */ | |
2415 | sz = PERF_ATTR_SIZE_VER0; | |
2416 | } else if (sz > our_sz) { | |
2417 | pr_debug("file uses a more recent and unsupported ABI" | |
2418 | " (%zu bytes extra)\n", sz - our_sz); | |
2419 | return -1; | |
2420 | } | |
2421 | /* what we have not yet read and that we know about */ | |
2422 | left = sz - PERF_ATTR_SIZE_VER0; | |
2423 | if (left) { | |
2424 | void *ptr = attr; | |
2425 | ptr += PERF_ATTR_SIZE_VER0; | |
2426 | ||
2427 | ret = readn(fd, ptr, left); | |
2428 | } | |
2429 | /* read perf_file_section, ids are read in caller */ | |
2430 | ret = readn(fd, &f_attr->ids, sizeof(f_attr->ids)); | |
2431 | ||
2432 | return ret <= 0 ? -1 : 0; | |
2433 | } | |
2434 | ||
831394bd NK |
2435 | static int perf_evsel__prepare_tracepoint_event(struct perf_evsel *evsel, |
2436 | struct pevent *pevent) | |
cb9dd49e | 2437 | { |
831394bd | 2438 | struct event_format *event; |
cb9dd49e ACM |
2439 | char bf[128]; |
2440 | ||
831394bd NK |
2441 | /* already prepared */ |
2442 | if (evsel->tp_format) | |
2443 | return 0; | |
2444 | ||
3dce2ce3 NK |
2445 | if (pevent == NULL) { |
2446 | pr_debug("broken or missing trace data\n"); | |
2447 | return -1; | |
2448 | } | |
2449 | ||
831394bd | 2450 | event = pevent_find_event(pevent, evsel->attr.config); |
cb9dd49e ACM |
2451 | if (event == NULL) |
2452 | return -1; | |
2453 | ||
831394bd NK |
2454 | if (!evsel->name) { |
2455 | snprintf(bf, sizeof(bf), "%s:%s", event->system, event->name); | |
2456 | evsel->name = strdup(bf); | |
2457 | if (evsel->name == NULL) | |
2458 | return -1; | |
2459 | } | |
cb9dd49e | 2460 | |
fcf65bf1 | 2461 | evsel->tp_format = event; |
cb9dd49e ACM |
2462 | return 0; |
2463 | } | |
2464 | ||
831394bd NK |
2465 | static int perf_evlist__prepare_tracepoint_events(struct perf_evlist *evlist, |
2466 | struct pevent *pevent) | |
cb9dd49e ACM |
2467 | { |
2468 | struct perf_evsel *pos; | |
2469 | ||
0050f7aa | 2470 | evlist__for_each(evlist, pos) { |
831394bd NK |
2471 | if (pos->attr.type == PERF_TYPE_TRACEPOINT && |
2472 | perf_evsel__prepare_tracepoint_event(pos, pevent)) | |
cb9dd49e ACM |
2473 | return -1; |
2474 | } | |
2475 | ||
2476 | return 0; | |
2477 | } | |
2478 | ||
d4339569 | 2479 | int perf_session__read_header(struct perf_session *session) |
8dc58101 | 2480 | { |
cc9784bd | 2481 | struct perf_data_file *file = session->file; |
1c0b04d1 | 2482 | struct perf_header *header = &session->header; |
ba21594c | 2483 | struct perf_file_header f_header; |
7c6a1c65 PZ |
2484 | struct perf_file_attr f_attr; |
2485 | u64 f_id; | |
7c6a1c65 | 2486 | int nr_attrs, nr_ids, i, j; |
cc9784bd | 2487 | int fd = perf_data_file__fd(file); |
7c6a1c65 | 2488 | |
334fe7a3 | 2489 | session->evlist = perf_evlist__new(); |
a91e5431 ACM |
2490 | if (session->evlist == NULL) |
2491 | return -ENOMEM; | |
2492 | ||
cc9784bd | 2493 | if (perf_data_file__is_pipe(file)) |
d4339569 | 2494 | return perf_header__read_pipe(session); |
8dc58101 | 2495 | |
69996df4 | 2496 | if (perf_file_header__read(&f_header, header, fd) < 0) |
4dc0a04b | 2497 | return -EINVAL; |
7c6a1c65 | 2498 | |
b314e5cf NK |
2499 | /* |
2500 | * Sanity check that perf.data was written cleanly; data size is | |
2501 | * initialized to 0 and updated only if the on_exit function is run. | |
2502 | * If data size is still 0 then the file contains only partial | |
2503 | * information. Just warn user and process it as much as it can. | |
2504 | */ | |
2505 | if (f_header.data.size == 0) { | |
2506 | pr_warning("WARNING: The %s file's data size field is 0 which is unexpected.\n" | |
2507 | "Was the 'perf record' command properly terminated?\n", | |
cc9784bd | 2508 | file->path); |
b314e5cf NK |
2509 | } |
2510 | ||
69996df4 | 2511 | nr_attrs = f_header.attrs.size / f_header.attr_size; |
7c6a1c65 PZ |
2512 | lseek(fd, f_header.attrs.offset, SEEK_SET); |
2513 | ||
2514 | for (i = 0; i < nr_attrs; i++) { | |
a91e5431 | 2515 | struct perf_evsel *evsel; |
1c222bce | 2516 | off_t tmp; |
7c6a1c65 | 2517 | |
69996df4 | 2518 | if (read_attr(fd, header, &f_attr) < 0) |
769885f3 | 2519 | goto out_errno; |
ba21594c | 2520 | |
eda3913b DA |
2521 | if (header->needs_swap) |
2522 | perf_event__attr_swap(&f_attr.attr); | |
2523 | ||
1c222bce | 2524 | tmp = lseek(fd, 0, SEEK_CUR); |
ef503831 | 2525 | evsel = perf_evsel__new(&f_attr.attr); |
7c6a1c65 | 2526 | |
a91e5431 ACM |
2527 | if (evsel == NULL) |
2528 | goto out_delete_evlist; | |
0807d2d8 ACM |
2529 | |
2530 | evsel->needs_swap = header->needs_swap; | |
a91e5431 ACM |
2531 | /* |
2532 | * Do it before so that if perf_evsel__alloc_id fails, this | |
2533 | * entry gets purged too at perf_evlist__delete(). | |
2534 | */ | |
2535 | perf_evlist__add(session->evlist, evsel); | |
7c6a1c65 PZ |
2536 | |
2537 | nr_ids = f_attr.ids.size / sizeof(u64); | |
a91e5431 ACM |
2538 | /* |
2539 | * We don't have the cpu and thread maps on the header, so | |
2540 | * for allocating the perf_sample_id table we fake 1 cpu and | |
2541 | * hattr->ids threads. | |
2542 | */ | |
2543 | if (perf_evsel__alloc_id(evsel, 1, nr_ids)) | |
2544 | goto out_delete_evlist; | |
2545 | ||
7c6a1c65 PZ |
2546 | lseek(fd, f_attr.ids.offset, SEEK_SET); |
2547 | ||
2548 | for (j = 0; j < nr_ids; j++) { | |
1c0b04d1 | 2549 | if (perf_header__getbuffer64(header, fd, &f_id, sizeof(f_id))) |
769885f3 | 2550 | goto out_errno; |
7c6a1c65 | 2551 | |
a91e5431 | 2552 | perf_evlist__id_add(session->evlist, evsel, 0, j, f_id); |
7c6a1c65 | 2553 | } |
11deb1f9 | 2554 | |
7c6a1c65 PZ |
2555 | lseek(fd, tmp, SEEK_SET); |
2556 | } | |
2557 | ||
d04b35f8 ACM |
2558 | symbol_conf.nr_events = nr_attrs; |
2559 | ||
29f5ffd3 | 2560 | perf_header__process_sections(header, fd, &session->tevent, |
fbe96f29 | 2561 | perf_file_section__process); |
4778d2e4 | 2562 | |
831394bd | 2563 | if (perf_evlist__prepare_tracepoint_events(session->evlist, |
29f5ffd3 | 2564 | session->tevent.pevent)) |
cb9dd49e ACM |
2565 | goto out_delete_evlist; |
2566 | ||
4dc0a04b | 2567 | return 0; |
769885f3 ACM |
2568 | out_errno: |
2569 | return -errno; | |
a91e5431 ACM |
2570 | |
2571 | out_delete_evlist: | |
2572 | perf_evlist__delete(session->evlist); | |
2573 | session->evlist = NULL; | |
2574 | return -ENOMEM; | |
7c6a1c65 | 2575 | } |
0d3a5c88 | 2576 | |
45694aa7 | 2577 | int perf_event__synthesize_attr(struct perf_tool *tool, |
f4d83436 | 2578 | struct perf_event_attr *attr, u32 ids, u64 *id, |
743eb868 | 2579 | perf_event__handler_t process) |
2c46dbb5 | 2580 | { |
8115d60c | 2581 | union perf_event *ev; |
2c46dbb5 TZ |
2582 | size_t size; |
2583 | int err; | |
2584 | ||
2585 | size = sizeof(struct perf_event_attr); | |
9ac3e487 | 2586 | size = PERF_ALIGN(size, sizeof(u64)); |
2c46dbb5 TZ |
2587 | size += sizeof(struct perf_event_header); |
2588 | size += ids * sizeof(u64); | |
2589 | ||
2590 | ev = malloc(size); | |
2591 | ||
ce47dc56 CS |
2592 | if (ev == NULL) |
2593 | return -ENOMEM; | |
2594 | ||
2c46dbb5 TZ |
2595 | ev->attr.attr = *attr; |
2596 | memcpy(ev->attr.id, id, ids * sizeof(u64)); | |
2597 | ||
2598 | ev->attr.header.type = PERF_RECORD_HEADER_ATTR; | |
f4d83436 | 2599 | ev->attr.header.size = (u16)size; |
2c46dbb5 | 2600 | |
f4d83436 RR |
2601 | if (ev->attr.header.size == size) |
2602 | err = process(tool, ev, NULL, NULL); | |
2603 | else | |
2604 | err = -E2BIG; | |
2c46dbb5 TZ |
2605 | |
2606 | free(ev); | |
2607 | ||
2608 | return err; | |
2609 | } | |
2610 | ||
45694aa7 | 2611 | int perf_event__synthesize_attrs(struct perf_tool *tool, |
d20deb64 | 2612 | struct perf_session *session, |
a91e5431 | 2613 | perf_event__handler_t process) |
2c46dbb5 | 2614 | { |
6606f873 | 2615 | struct perf_evsel *evsel; |
a91e5431 | 2616 | int err = 0; |
2c46dbb5 | 2617 | |
0050f7aa | 2618 | evlist__for_each(session->evlist, evsel) { |
6606f873 RR |
2619 | err = perf_event__synthesize_attr(tool, &evsel->attr, evsel->ids, |
2620 | evsel->id, process); | |
2c46dbb5 TZ |
2621 | if (err) { |
2622 | pr_debug("failed to create perf header attribute\n"); | |
2623 | return err; | |
2624 | } | |
2625 | } | |
2626 | ||
2627 | return err; | |
2628 | } | |
2629 | ||
47c3d109 AH |
2630 | int perf_event__process_attr(struct perf_tool *tool __maybe_unused, |
2631 | union perf_event *event, | |
10d0f086 | 2632 | struct perf_evlist **pevlist) |
2c46dbb5 | 2633 | { |
f4d83436 | 2634 | u32 i, ids, n_ids; |
a91e5431 | 2635 | struct perf_evsel *evsel; |
10d0f086 | 2636 | struct perf_evlist *evlist = *pevlist; |
2c46dbb5 | 2637 | |
10d0f086 | 2638 | if (evlist == NULL) { |
334fe7a3 | 2639 | *pevlist = evlist = perf_evlist__new(); |
10d0f086 | 2640 | if (evlist == NULL) |
a91e5431 ACM |
2641 | return -ENOMEM; |
2642 | } | |
2643 | ||
ef503831 | 2644 | evsel = perf_evsel__new(&event->attr.attr); |
a91e5431 | 2645 | if (evsel == NULL) |
2c46dbb5 TZ |
2646 | return -ENOMEM; |
2647 | ||
10d0f086 | 2648 | perf_evlist__add(evlist, evsel); |
a91e5431 | 2649 | |
8115d60c ACM |
2650 | ids = event->header.size; |
2651 | ids -= (void *)&event->attr.id - (void *)event; | |
2c46dbb5 | 2652 | n_ids = ids / sizeof(u64); |
a91e5431 ACM |
2653 | /* |
2654 | * We don't have the cpu and thread maps on the header, so | |
2655 | * for allocating the perf_sample_id table we fake 1 cpu and | |
2656 | * hattr->ids threads. | |
2657 | */ | |
2658 | if (perf_evsel__alloc_id(evsel, 1, n_ids)) | |
2659 | return -ENOMEM; | |
2c46dbb5 TZ |
2660 | |
2661 | for (i = 0; i < n_ids; i++) { | |
10d0f086 | 2662 | perf_evlist__id_add(evlist, evsel, 0, i, event->attr.id[i]); |
2c46dbb5 TZ |
2663 | } |
2664 | ||
7e0d6fc9 AH |
2665 | symbol_conf.nr_events = evlist->nr_entries; |
2666 | ||
2c46dbb5 TZ |
2667 | return 0; |
2668 | } | |
cd19a035 | 2669 | |
45694aa7 | 2670 | int perf_event__synthesize_tracing_data(struct perf_tool *tool, int fd, |
d20deb64 | 2671 | struct perf_evlist *evlist, |
743eb868 | 2672 | perf_event__handler_t process) |
9215545e | 2673 | { |
8115d60c | 2674 | union perf_event ev; |
29208e57 | 2675 | struct tracing_data *tdata; |
9215545e | 2676 | ssize_t size = 0, aligned_size = 0, padding; |
1d037ca1 | 2677 | int err __maybe_unused = 0; |
9215545e | 2678 | |
29208e57 JO |
2679 | /* |
2680 | * We are going to store the size of the data followed | |
2681 | * by the data contents. Since the fd descriptor is a pipe, | |
2682 | * we cannot seek back to store the size of the data once | |
2683 | * we know it. Instead we: | |
2684 | * | |
2685 | * - write the tracing data to the temp file | |
2686 | * - get/write the data size to pipe | |
2687 | * - write the tracing data from the temp file | |
2688 | * to the pipe | |
2689 | */ | |
2690 | tdata = tracing_data_get(&evlist->entries, fd, true); | |
2691 | if (!tdata) | |
2692 | return -1; | |
2693 | ||
9215545e TZ |
2694 | memset(&ev, 0, sizeof(ev)); |
2695 | ||
2696 | ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA; | |
29208e57 | 2697 | size = tdata->size; |
9ac3e487 | 2698 | aligned_size = PERF_ALIGN(size, sizeof(u64)); |
9215545e TZ |
2699 | padding = aligned_size - size; |
2700 | ev.tracing_data.header.size = sizeof(ev.tracing_data); | |
2701 | ev.tracing_data.size = aligned_size; | |
2702 | ||
45694aa7 | 2703 | process(tool, &ev, NULL, NULL); |
9215545e | 2704 | |
29208e57 JO |
2705 | /* |
2706 | * The put function will copy all the tracing data | |
2707 | * stored in temp file to the pipe. | |
2708 | */ | |
2709 | tracing_data_put(tdata); | |
2710 | ||
9215545e TZ |
2711 | write_padded(fd, NULL, 0, padding); |
2712 | ||
2713 | return aligned_size; | |
2714 | } | |
2715 | ||
47c3d109 AH |
2716 | int perf_event__process_tracing_data(struct perf_tool *tool __maybe_unused, |
2717 | union perf_event *event, | |
8115d60c | 2718 | struct perf_session *session) |
9215545e | 2719 | { |
8115d60c | 2720 | ssize_t size_read, padding, size = event->tracing_data.size; |
cc9784bd JO |
2721 | int fd = perf_data_file__fd(session->file); |
2722 | off_t offset = lseek(fd, 0, SEEK_CUR); | |
9215545e TZ |
2723 | char buf[BUFSIZ]; |
2724 | ||
2725 | /* setup for reading amidst mmap */ | |
cc9784bd | 2726 | lseek(fd, offset + sizeof(struct tracing_data_event), |
9215545e TZ |
2727 | SEEK_SET); |
2728 | ||
29f5ffd3 | 2729 | size_read = trace_report(fd, &session->tevent, |
da378962 | 2730 | session->repipe); |
9ac3e487 | 2731 | padding = PERF_ALIGN(size_read, sizeof(u64)) - size_read; |
9215545e | 2732 | |
cc9784bd | 2733 | if (readn(fd, buf, padding) < 0) { |
2caa48a2 ACM |
2734 | pr_err("%s: reading input file", __func__); |
2735 | return -1; | |
2736 | } | |
454c407e TZ |
2737 | if (session->repipe) { |
2738 | int retw = write(STDOUT_FILENO, buf, padding); | |
2caa48a2 ACM |
2739 | if (retw <= 0 || retw != padding) { |
2740 | pr_err("%s: repiping tracing data padding", __func__); | |
2741 | return -1; | |
2742 | } | |
454c407e | 2743 | } |
9215545e | 2744 | |
2caa48a2 ACM |
2745 | if (size_read + padding != size) { |
2746 | pr_err("%s: tracing data size mismatch", __func__); | |
2747 | return -1; | |
2748 | } | |
9215545e | 2749 | |
831394bd | 2750 | perf_evlist__prepare_tracepoint_events(session->evlist, |
29f5ffd3 | 2751 | session->tevent.pevent); |
8b6ee4c5 | 2752 | |
9215545e TZ |
2753 | return size_read + padding; |
2754 | } | |
c7929e47 | 2755 | |
45694aa7 | 2756 | int perf_event__synthesize_build_id(struct perf_tool *tool, |
d20deb64 | 2757 | struct dso *pos, u16 misc, |
8115d60c | 2758 | perf_event__handler_t process, |
743eb868 | 2759 | struct machine *machine) |
c7929e47 | 2760 | { |
8115d60c | 2761 | union perf_event ev; |
c7929e47 TZ |
2762 | size_t len; |
2763 | int err = 0; | |
2764 | ||
2765 | if (!pos->hit) | |
2766 | return err; | |
2767 | ||
2768 | memset(&ev, 0, sizeof(ev)); | |
2769 | ||
2770 | len = pos->long_name_len + 1; | |
9ac3e487 | 2771 | len = PERF_ALIGN(len, NAME_ALIGN); |
c7929e47 TZ |
2772 | memcpy(&ev.build_id.build_id, pos->build_id, sizeof(pos->build_id)); |
2773 | ev.build_id.header.type = PERF_RECORD_HEADER_BUILD_ID; | |
2774 | ev.build_id.header.misc = misc; | |
23346f21 | 2775 | ev.build_id.pid = machine->pid; |
c7929e47 TZ |
2776 | ev.build_id.header.size = sizeof(ev.build_id) + len; |
2777 | memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len); | |
2778 | ||
45694aa7 | 2779 | err = process(tool, &ev, NULL, machine); |
c7929e47 TZ |
2780 | |
2781 | return err; | |
2782 | } | |
2783 | ||
1d037ca1 | 2784 | int perf_event__process_build_id(struct perf_tool *tool __maybe_unused, |
d20deb64 | 2785 | union perf_event *event, |
8115d60c | 2786 | struct perf_session *session) |
c7929e47 | 2787 | { |
8115d60c ACM |
2788 | __event_process_build_id(&event->build_id, |
2789 | event->build_id.filename, | |
a1645ce1 | 2790 | session); |
c7929e47 TZ |
2791 | return 0; |
2792 | } | |
a1ac1d3c SE |
2793 | |
2794 | void disable_buildid_cache(void) | |
2795 | { | |
2796 | no_buildid_cache = true; | |
2797 | } |