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" |
720e98b5 JO |
26 | #include <api/fs/fs.h> |
27 | #include "asm/bug.h" | |
7c6a1c65 | 28 | |
73323f54 SE |
29 | /* |
30 | * magic2 = "PERFILE2" | |
31 | * must be a numerical value to let the endianness | |
32 | * determine the memory layout. That way we are able | |
33 | * to detect endianness when reading the perf.data file | |
34 | * back. | |
35 | * | |
36 | * we check for legacy (PERFFILE) format. | |
37 | */ | |
38 | static const char *__perf_magic1 = "PERFFILE"; | |
39 | static const u64 __perf_magic2 = 0x32454c4946524550ULL; | |
40 | static const u64 __perf_magic2_sw = 0x50455246494c4532ULL; | |
7c6a1c65 | 41 | |
73323f54 | 42 | #define PERF_MAGIC __perf_magic2 |
7c6a1c65 | 43 | |
7c6a1c65 | 44 | struct perf_file_attr { |
cdd6c482 | 45 | struct perf_event_attr attr; |
7c6a1c65 PZ |
46 | struct perf_file_section ids; |
47 | }; | |
48 | ||
1c0b04d1 | 49 | void perf_header__set_feat(struct perf_header *header, int feat) |
8d06367f | 50 | { |
1c0b04d1 | 51 | set_bit(feat, header->adds_features); |
8d06367f ACM |
52 | } |
53 | ||
1c0b04d1 | 54 | void perf_header__clear_feat(struct perf_header *header, int feat) |
baa2f6ce | 55 | { |
1c0b04d1 | 56 | clear_bit(feat, header->adds_features); |
baa2f6ce ACM |
57 | } |
58 | ||
1c0b04d1 | 59 | bool perf_header__has_feat(const struct perf_header *header, int feat) |
8d06367f | 60 | { |
1c0b04d1 | 61 | return test_bit(feat, header->adds_features); |
8d06367f ACM |
62 | } |
63 | ||
3726cc75 | 64 | static int do_write(int fd, const void *buf, size_t size) |
7c6a1c65 PZ |
65 | { |
66 | while (size) { | |
67 | int ret = write(fd, buf, size); | |
68 | ||
69 | if (ret < 0) | |
d5eed904 | 70 | return -errno; |
7c6a1c65 PZ |
71 | |
72 | size -= ret; | |
73 | buf += ret; | |
74 | } | |
3726cc75 ACM |
75 | |
76 | return 0; | |
7c6a1c65 PZ |
77 | } |
78 | ||
e195fac8 | 79 | int write_padded(int fd, const void *bf, size_t count, size_t count_aligned) |
f92cb24c ACM |
80 | { |
81 | static const char zero_buf[NAME_ALIGN]; | |
82 | int err = do_write(fd, bf, count); | |
83 | ||
84 | if (!err) | |
85 | err = do_write(fd, zero_buf, count_aligned - count); | |
86 | ||
87 | return err; | |
88 | } | |
89 | ||
2bb00d2f KL |
90 | #define string_size(str) \ |
91 | (PERF_ALIGN((strlen(str) + 1), NAME_ALIGN) + sizeof(u32)) | |
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 | ||
1d037ca1 | 140 | static int write_tracing_data(int fd, struct perf_header *h __maybe_unused, |
fbe96f29 SE |
141 | struct perf_evlist *evlist) |
142 | { | |
143 | return read_tracing_data(fd, &evlist->entries); | |
144 | } | |
145 | ||
146 | ||
147 | static int write_build_id(int fd, struct perf_header *h, | |
1d037ca1 | 148 | struct perf_evlist *evlist __maybe_unused) |
fbe96f29 SE |
149 | { |
150 | struct perf_session *session; | |
151 | int err; | |
152 | ||
153 | session = container_of(h, struct perf_session, header); | |
154 | ||
e20960c0 RR |
155 | if (!perf_session__read_build_ids(session, true)) |
156 | return -1; | |
157 | ||
714c9c4a | 158 | err = perf_session__write_buildid_table(session, fd); |
fbe96f29 SE |
159 | if (err < 0) { |
160 | pr_debug("failed to write buildid table\n"); | |
161 | return err; | |
162 | } | |
73c5d224 | 163 | perf_session__cache_build_ids(session); |
fbe96f29 SE |
164 | |
165 | return 0; | |
166 | } | |
167 | ||
1d037ca1 IT |
168 | static int write_hostname(int fd, struct perf_header *h __maybe_unused, |
169 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
170 | { |
171 | struct utsname uts; | |
172 | int ret; | |
173 | ||
174 | ret = uname(&uts); | |
175 | if (ret < 0) | |
176 | return -1; | |
177 | ||
178 | return do_write_string(fd, uts.nodename); | |
179 | } | |
180 | ||
1d037ca1 IT |
181 | static int write_osrelease(int fd, struct perf_header *h __maybe_unused, |
182 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
183 | { |
184 | struct utsname uts; | |
185 | int ret; | |
186 | ||
187 | ret = uname(&uts); | |
188 | if (ret < 0) | |
189 | return -1; | |
190 | ||
191 | return do_write_string(fd, uts.release); | |
192 | } | |
193 | ||
1d037ca1 IT |
194 | static int write_arch(int fd, struct perf_header *h __maybe_unused, |
195 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
196 | { |
197 | struct utsname uts; | |
198 | int ret; | |
199 | ||
200 | ret = uname(&uts); | |
201 | if (ret < 0) | |
202 | return -1; | |
203 | ||
204 | return do_write_string(fd, uts.machine); | |
205 | } | |
206 | ||
1d037ca1 IT |
207 | static int write_version(int fd, struct perf_header *h __maybe_unused, |
208 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
209 | { |
210 | return do_write_string(fd, perf_version_string); | |
211 | } | |
212 | ||
493c3031 | 213 | static int __write_cpudesc(int fd, const char *cpuinfo_proc) |
fbe96f29 | 214 | { |
fbe96f29 SE |
215 | FILE *file; |
216 | char *buf = NULL; | |
217 | char *s, *p; | |
493c3031 | 218 | const char *search = cpuinfo_proc; |
fbe96f29 SE |
219 | size_t len = 0; |
220 | int ret = -1; | |
221 | ||
222 | if (!search) | |
223 | return -1; | |
224 | ||
225 | file = fopen("/proc/cpuinfo", "r"); | |
226 | if (!file) | |
227 | return -1; | |
228 | ||
229 | while (getline(&buf, &len, file) > 0) { | |
230 | ret = strncmp(buf, search, strlen(search)); | |
231 | if (!ret) | |
232 | break; | |
233 | } | |
234 | ||
ed307758 WN |
235 | if (ret) { |
236 | ret = -1; | |
fbe96f29 | 237 | goto done; |
ed307758 | 238 | } |
fbe96f29 SE |
239 | |
240 | s = buf; | |
241 | ||
242 | p = strchr(buf, ':'); | |
243 | if (p && *(p+1) == ' ' && *(p+2)) | |
244 | s = p + 2; | |
245 | p = strchr(s, '\n'); | |
246 | if (p) | |
247 | *p = '\0'; | |
248 | ||
249 | /* squash extra space characters (branding string) */ | |
250 | p = s; | |
251 | while (*p) { | |
252 | if (isspace(*p)) { | |
253 | char *r = p + 1; | |
254 | char *q = r; | |
255 | *p = ' '; | |
256 | while (*q && isspace(*q)) | |
257 | q++; | |
258 | if (q != (p+1)) | |
259 | while ((*r++ = *q++)); | |
260 | } | |
261 | p++; | |
262 | } | |
263 | ret = do_write_string(fd, s); | |
264 | done: | |
265 | free(buf); | |
266 | fclose(file); | |
267 | return ret; | |
268 | } | |
269 | ||
493c3031 WN |
270 | static int write_cpudesc(int fd, struct perf_header *h __maybe_unused, |
271 | struct perf_evlist *evlist __maybe_unused) | |
272 | { | |
273 | #ifndef CPUINFO_PROC | |
274 | #define CPUINFO_PROC {"model name", } | |
275 | #endif | |
276 | const char *cpuinfo_procs[] = CPUINFO_PROC; | |
277 | unsigned int i; | |
278 | ||
279 | for (i = 0; i < ARRAY_SIZE(cpuinfo_procs); i++) { | |
280 | int ret; | |
281 | ret = __write_cpudesc(fd, cpuinfo_procs[i]); | |
282 | if (ret >= 0) | |
283 | return ret; | |
284 | } | |
285 | return -1; | |
286 | } | |
287 | ||
288 | ||
1d037ca1 IT |
289 | static int write_nrcpus(int fd, struct perf_header *h __maybe_unused, |
290 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
291 | { |
292 | long nr; | |
293 | u32 nrc, nra; | |
294 | int ret; | |
295 | ||
296 | nr = sysconf(_SC_NPROCESSORS_CONF); | |
297 | if (nr < 0) | |
298 | return -1; | |
299 | ||
300 | nrc = (u32)(nr & UINT_MAX); | |
301 | ||
302 | nr = sysconf(_SC_NPROCESSORS_ONLN); | |
303 | if (nr < 0) | |
304 | return -1; | |
305 | ||
306 | nra = (u32)(nr & UINT_MAX); | |
307 | ||
308 | ret = do_write(fd, &nrc, sizeof(nrc)); | |
309 | if (ret < 0) | |
310 | return ret; | |
311 | ||
312 | return do_write(fd, &nra, sizeof(nra)); | |
313 | } | |
314 | ||
1d037ca1 | 315 | static int write_event_desc(int fd, struct perf_header *h __maybe_unused, |
fbe96f29 SE |
316 | struct perf_evlist *evlist) |
317 | { | |
6606f873 | 318 | struct perf_evsel *evsel; |
74ba9e11 | 319 | u32 nre, nri, sz; |
fbe96f29 SE |
320 | int ret; |
321 | ||
74ba9e11 | 322 | nre = evlist->nr_entries; |
fbe96f29 SE |
323 | |
324 | /* | |
325 | * write number of events | |
326 | */ | |
327 | ret = do_write(fd, &nre, sizeof(nre)); | |
328 | if (ret < 0) | |
329 | return ret; | |
330 | ||
331 | /* | |
332 | * size of perf_event_attr struct | |
333 | */ | |
6606f873 | 334 | sz = (u32)sizeof(evsel->attr); |
fbe96f29 SE |
335 | ret = do_write(fd, &sz, sizeof(sz)); |
336 | if (ret < 0) | |
337 | return ret; | |
338 | ||
e5cadb93 | 339 | evlist__for_each_entry(evlist, evsel) { |
6606f873 | 340 | ret = do_write(fd, &evsel->attr, sz); |
fbe96f29 SE |
341 | if (ret < 0) |
342 | return ret; | |
343 | /* | |
344 | * write number of unique id per event | |
345 | * there is one id per instance of an event | |
346 | * | |
347 | * copy into an nri to be independent of the | |
348 | * type of ids, | |
349 | */ | |
6606f873 | 350 | nri = evsel->ids; |
fbe96f29 SE |
351 | ret = do_write(fd, &nri, sizeof(nri)); |
352 | if (ret < 0) | |
353 | return ret; | |
354 | ||
355 | /* | |
356 | * write event string as passed on cmdline | |
357 | */ | |
6606f873 | 358 | ret = do_write_string(fd, perf_evsel__name(evsel)); |
fbe96f29 SE |
359 | if (ret < 0) |
360 | return ret; | |
361 | /* | |
362 | * write unique ids for this event | |
363 | */ | |
6606f873 | 364 | ret = do_write(fd, evsel->id, evsel->ids * sizeof(u64)); |
fbe96f29 SE |
365 | if (ret < 0) |
366 | return ret; | |
367 | } | |
368 | return 0; | |
369 | } | |
370 | ||
1d037ca1 IT |
371 | static int write_cmdline(int fd, struct perf_header *h __maybe_unused, |
372 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
373 | { |
374 | char buf[MAXPATHLEN]; | |
375 | char proc[32]; | |
b6998692 ACM |
376 | u32 n; |
377 | int i, ret; | |
fbe96f29 SE |
378 | |
379 | /* | |
380 | * actual atual path to perf binary | |
381 | */ | |
382 | sprintf(proc, "/proc/%d/exe", getpid()); | |
383 | ret = readlink(proc, buf, sizeof(buf)); | |
384 | if (ret <= 0) | |
385 | return -1; | |
386 | ||
387 | /* readlink() does not add null termination */ | |
388 | buf[ret] = '\0'; | |
389 | ||
390 | /* account for binary path */ | |
b6998692 | 391 | n = perf_env.nr_cmdline + 1; |
fbe96f29 SE |
392 | |
393 | ret = do_write(fd, &n, sizeof(n)); | |
394 | if (ret < 0) | |
395 | return ret; | |
396 | ||
397 | ret = do_write_string(fd, buf); | |
398 | if (ret < 0) | |
399 | return ret; | |
400 | ||
b6998692 ACM |
401 | for (i = 0 ; i < perf_env.nr_cmdline; i++) { |
402 | ret = do_write_string(fd, perf_env.cmdline_argv[i]); | |
fbe96f29 SE |
403 | if (ret < 0) |
404 | return ret; | |
405 | } | |
406 | return 0; | |
407 | } | |
408 | ||
409 | #define CORE_SIB_FMT \ | |
410 | "/sys/devices/system/cpu/cpu%d/topology/core_siblings_list" | |
411 | #define THRD_SIB_FMT \ | |
412 | "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list" | |
413 | ||
414 | struct cpu_topo { | |
2bb00d2f | 415 | u32 cpu_nr; |
fbe96f29 SE |
416 | u32 core_sib; |
417 | u32 thread_sib; | |
418 | char **core_siblings; | |
419 | char **thread_siblings; | |
420 | }; | |
421 | ||
422 | static int build_cpu_topo(struct cpu_topo *tp, int cpu) | |
423 | { | |
424 | FILE *fp; | |
425 | char filename[MAXPATHLEN]; | |
426 | char *buf = NULL, *p; | |
427 | size_t len = 0; | |
c5885749 | 428 | ssize_t sret; |
fbe96f29 SE |
429 | u32 i = 0; |
430 | int ret = -1; | |
431 | ||
432 | sprintf(filename, CORE_SIB_FMT, cpu); | |
433 | fp = fopen(filename, "r"); | |
434 | if (!fp) | |
c5885749 | 435 | goto try_threads; |
fbe96f29 | 436 | |
c5885749 | 437 | sret = getline(&buf, &len, fp); |
fbe96f29 | 438 | fclose(fp); |
c5885749 SE |
439 | if (sret <= 0) |
440 | goto try_threads; | |
fbe96f29 SE |
441 | |
442 | p = strchr(buf, '\n'); | |
443 | if (p) | |
444 | *p = '\0'; | |
445 | ||
446 | for (i = 0; i < tp->core_sib; i++) { | |
447 | if (!strcmp(buf, tp->core_siblings[i])) | |
448 | break; | |
449 | } | |
450 | if (i == tp->core_sib) { | |
451 | tp->core_siblings[i] = buf; | |
452 | tp->core_sib++; | |
453 | buf = NULL; | |
454 | len = 0; | |
455 | } | |
c5885749 | 456 | ret = 0; |
fbe96f29 | 457 | |
c5885749 | 458 | try_threads: |
fbe96f29 SE |
459 | sprintf(filename, THRD_SIB_FMT, cpu); |
460 | fp = fopen(filename, "r"); | |
461 | if (!fp) | |
462 | goto done; | |
463 | ||
464 | if (getline(&buf, &len, fp) <= 0) | |
465 | goto done; | |
466 | ||
467 | p = strchr(buf, '\n'); | |
468 | if (p) | |
469 | *p = '\0'; | |
470 | ||
471 | for (i = 0; i < tp->thread_sib; i++) { | |
472 | if (!strcmp(buf, tp->thread_siblings[i])) | |
473 | break; | |
474 | } | |
475 | if (i == tp->thread_sib) { | |
476 | tp->thread_siblings[i] = buf; | |
477 | tp->thread_sib++; | |
478 | buf = NULL; | |
479 | } | |
480 | ret = 0; | |
481 | done: | |
482 | if(fp) | |
483 | fclose(fp); | |
484 | free(buf); | |
485 | return ret; | |
486 | } | |
487 | ||
488 | static void free_cpu_topo(struct cpu_topo *tp) | |
489 | { | |
490 | u32 i; | |
491 | ||
492 | if (!tp) | |
493 | return; | |
494 | ||
495 | for (i = 0 ; i < tp->core_sib; i++) | |
74cf249d | 496 | zfree(&tp->core_siblings[i]); |
fbe96f29 SE |
497 | |
498 | for (i = 0 ; i < tp->thread_sib; i++) | |
74cf249d | 499 | zfree(&tp->thread_siblings[i]); |
fbe96f29 SE |
500 | |
501 | free(tp); | |
502 | } | |
503 | ||
504 | static struct cpu_topo *build_cpu_topology(void) | |
505 | { | |
506 | struct cpu_topo *tp; | |
507 | void *addr; | |
508 | u32 nr, i; | |
aa36ddd7 | 509 | size_t sz; |
fbe96f29 SE |
510 | long ncpus; |
511 | int ret = -1; | |
512 | ||
513 | ncpus = sysconf(_SC_NPROCESSORS_CONF); | |
514 | if (ncpus < 0) | |
515 | return NULL; | |
516 | ||
517 | nr = (u32)(ncpus & UINT_MAX); | |
518 | ||
519 | sz = nr * sizeof(char *); | |
520 | ||
aa36ddd7 | 521 | addr = calloc(1, sizeof(*tp) + 2 * sz); |
fbe96f29 SE |
522 | if (!addr) |
523 | return NULL; | |
524 | ||
525 | tp = addr; | |
2bb00d2f | 526 | tp->cpu_nr = nr; |
fbe96f29 SE |
527 | addr += sizeof(*tp); |
528 | tp->core_siblings = addr; | |
529 | addr += sz; | |
530 | tp->thread_siblings = addr; | |
531 | ||
532 | for (i = 0; i < nr; i++) { | |
533 | ret = build_cpu_topo(tp, i); | |
534 | if (ret < 0) | |
535 | break; | |
536 | } | |
537 | if (ret) { | |
538 | free_cpu_topo(tp); | |
539 | tp = NULL; | |
540 | } | |
541 | return tp; | |
542 | } | |
543 | ||
1d037ca1 IT |
544 | static int write_cpu_topology(int fd, struct perf_header *h __maybe_unused, |
545 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
546 | { |
547 | struct cpu_topo *tp; | |
548 | u32 i; | |
aa36ddd7 | 549 | int ret, j; |
fbe96f29 SE |
550 | |
551 | tp = build_cpu_topology(); | |
552 | if (!tp) | |
553 | return -1; | |
554 | ||
555 | ret = do_write(fd, &tp->core_sib, sizeof(tp->core_sib)); | |
556 | if (ret < 0) | |
557 | goto done; | |
558 | ||
559 | for (i = 0; i < tp->core_sib; i++) { | |
560 | ret = do_write_string(fd, tp->core_siblings[i]); | |
561 | if (ret < 0) | |
562 | goto done; | |
563 | } | |
564 | ret = do_write(fd, &tp->thread_sib, sizeof(tp->thread_sib)); | |
565 | if (ret < 0) | |
566 | goto done; | |
567 | ||
568 | for (i = 0; i < tp->thread_sib; i++) { | |
569 | ret = do_write_string(fd, tp->thread_siblings[i]); | |
570 | if (ret < 0) | |
571 | break; | |
572 | } | |
2bb00d2f | 573 | |
aa36ddd7 ACM |
574 | ret = perf_env__read_cpu_topology_map(&perf_env); |
575 | if (ret < 0) | |
576 | goto done; | |
577 | ||
578 | for (j = 0; j < perf_env.nr_cpus_avail; j++) { | |
579 | ret = do_write(fd, &perf_env.cpu[j].core_id, | |
580 | sizeof(perf_env.cpu[j].core_id)); | |
2bb00d2f KL |
581 | if (ret < 0) |
582 | return ret; | |
aa36ddd7 ACM |
583 | ret = do_write(fd, &perf_env.cpu[j].socket_id, |
584 | sizeof(perf_env.cpu[j].socket_id)); | |
2bb00d2f KL |
585 | if (ret < 0) |
586 | return ret; | |
587 | } | |
fbe96f29 SE |
588 | done: |
589 | free_cpu_topo(tp); | |
590 | return ret; | |
591 | } | |
592 | ||
593 | ||
594 | ||
1d037ca1 IT |
595 | static int write_total_mem(int fd, struct perf_header *h __maybe_unused, |
596 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
597 | { |
598 | char *buf = NULL; | |
599 | FILE *fp; | |
600 | size_t len = 0; | |
601 | int ret = -1, n; | |
602 | uint64_t mem; | |
603 | ||
604 | fp = fopen("/proc/meminfo", "r"); | |
605 | if (!fp) | |
606 | return -1; | |
607 | ||
608 | while (getline(&buf, &len, fp) > 0) { | |
609 | ret = strncmp(buf, "MemTotal:", 9); | |
610 | if (!ret) | |
611 | break; | |
612 | } | |
613 | if (!ret) { | |
614 | n = sscanf(buf, "%*s %"PRIu64, &mem); | |
615 | if (n == 1) | |
616 | ret = do_write(fd, &mem, sizeof(mem)); | |
ed307758 WN |
617 | } else |
618 | ret = -1; | |
fbe96f29 SE |
619 | free(buf); |
620 | fclose(fp); | |
621 | return ret; | |
622 | } | |
623 | ||
624 | static int write_topo_node(int fd, int node) | |
625 | { | |
626 | char str[MAXPATHLEN]; | |
627 | char field[32]; | |
628 | char *buf = NULL, *p; | |
629 | size_t len = 0; | |
630 | FILE *fp; | |
631 | u64 mem_total, mem_free, mem; | |
632 | int ret = -1; | |
633 | ||
634 | sprintf(str, "/sys/devices/system/node/node%d/meminfo", node); | |
635 | fp = fopen(str, "r"); | |
636 | if (!fp) | |
637 | return -1; | |
638 | ||
639 | while (getline(&buf, &len, fp) > 0) { | |
640 | /* skip over invalid lines */ | |
641 | if (!strchr(buf, ':')) | |
642 | continue; | |
a761a2d8 | 643 | if (sscanf(buf, "%*s %*d %31s %"PRIu64, field, &mem) != 2) |
fbe96f29 SE |
644 | goto done; |
645 | if (!strcmp(field, "MemTotal:")) | |
646 | mem_total = mem; | |
647 | if (!strcmp(field, "MemFree:")) | |
648 | mem_free = mem; | |
649 | } | |
650 | ||
651 | fclose(fp); | |
5809fde0 | 652 | fp = NULL; |
fbe96f29 SE |
653 | |
654 | ret = do_write(fd, &mem_total, sizeof(u64)); | |
655 | if (ret) | |
656 | goto done; | |
657 | ||
658 | ret = do_write(fd, &mem_free, sizeof(u64)); | |
659 | if (ret) | |
660 | goto done; | |
661 | ||
662 | ret = -1; | |
663 | sprintf(str, "/sys/devices/system/node/node%d/cpulist", node); | |
664 | ||
665 | fp = fopen(str, "r"); | |
666 | if (!fp) | |
667 | goto done; | |
668 | ||
669 | if (getline(&buf, &len, fp) <= 0) | |
670 | goto done; | |
671 | ||
672 | p = strchr(buf, '\n'); | |
673 | if (p) | |
674 | *p = '\0'; | |
675 | ||
676 | ret = do_write_string(fd, buf); | |
677 | done: | |
678 | free(buf); | |
5809fde0 TJ |
679 | if (fp) |
680 | fclose(fp); | |
fbe96f29 SE |
681 | return ret; |
682 | } | |
683 | ||
1d037ca1 IT |
684 | static int write_numa_topology(int fd, struct perf_header *h __maybe_unused, |
685 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
686 | { |
687 | char *buf = NULL; | |
688 | size_t len = 0; | |
689 | FILE *fp; | |
690 | struct cpu_map *node_map = NULL; | |
691 | char *c; | |
692 | u32 nr, i, j; | |
693 | int ret = -1; | |
694 | ||
695 | fp = fopen("/sys/devices/system/node/online", "r"); | |
696 | if (!fp) | |
697 | return -1; | |
698 | ||
699 | if (getline(&buf, &len, fp) <= 0) | |
700 | goto done; | |
701 | ||
702 | c = strchr(buf, '\n'); | |
703 | if (c) | |
704 | *c = '\0'; | |
705 | ||
706 | node_map = cpu_map__new(buf); | |
707 | if (!node_map) | |
708 | goto done; | |
709 | ||
710 | nr = (u32)node_map->nr; | |
711 | ||
712 | ret = do_write(fd, &nr, sizeof(nr)); | |
713 | if (ret < 0) | |
714 | goto done; | |
715 | ||
716 | for (i = 0; i < nr; i++) { | |
717 | j = (u32)node_map->map[i]; | |
718 | ret = do_write(fd, &j, sizeof(j)); | |
719 | if (ret < 0) | |
720 | break; | |
721 | ||
722 | ret = write_topo_node(fd, i); | |
723 | if (ret < 0) | |
724 | break; | |
725 | } | |
726 | done: | |
727 | free(buf); | |
728 | fclose(fp); | |
5191d887 | 729 | cpu_map__put(node_map); |
fbe96f29 SE |
730 | return ret; |
731 | } | |
732 | ||
50a9667c RR |
733 | /* |
734 | * File format: | |
735 | * | |
736 | * struct pmu_mappings { | |
737 | * u32 pmu_num; | |
738 | * struct pmu_map { | |
739 | * u32 type; | |
740 | * char name[]; | |
741 | * }[pmu_num]; | |
742 | * }; | |
743 | */ | |
744 | ||
1d037ca1 IT |
745 | static int write_pmu_mappings(int fd, struct perf_header *h __maybe_unused, |
746 | struct perf_evlist *evlist __maybe_unused) | |
50a9667c RR |
747 | { |
748 | struct perf_pmu *pmu = NULL; | |
749 | off_t offset = lseek(fd, 0, SEEK_CUR); | |
750 | __u32 pmu_num = 0; | |
5323f60c | 751 | int ret; |
50a9667c RR |
752 | |
753 | /* write real pmu_num later */ | |
5323f60c NK |
754 | ret = do_write(fd, &pmu_num, sizeof(pmu_num)); |
755 | if (ret < 0) | |
756 | return ret; | |
50a9667c RR |
757 | |
758 | while ((pmu = perf_pmu__scan(pmu))) { | |
759 | if (!pmu->name) | |
760 | continue; | |
761 | pmu_num++; | |
5323f60c NK |
762 | |
763 | ret = do_write(fd, &pmu->type, sizeof(pmu->type)); | |
764 | if (ret < 0) | |
765 | return ret; | |
766 | ||
767 | ret = do_write_string(fd, pmu->name); | |
768 | if (ret < 0) | |
769 | return ret; | |
50a9667c RR |
770 | } |
771 | ||
772 | if (pwrite(fd, &pmu_num, sizeof(pmu_num), offset) != sizeof(pmu_num)) { | |
773 | /* discard all */ | |
774 | lseek(fd, offset, SEEK_SET); | |
775 | return -1; | |
776 | } | |
777 | ||
778 | return 0; | |
779 | } | |
780 | ||
a8bb559b NK |
781 | /* |
782 | * File format: | |
783 | * | |
784 | * struct group_descs { | |
785 | * u32 nr_groups; | |
786 | * struct group_desc { | |
787 | * char name[]; | |
788 | * u32 leader_idx; | |
789 | * u32 nr_members; | |
790 | * }[nr_groups]; | |
791 | * }; | |
792 | */ | |
793 | static int write_group_desc(int fd, struct perf_header *h __maybe_unused, | |
794 | struct perf_evlist *evlist) | |
795 | { | |
796 | u32 nr_groups = evlist->nr_groups; | |
797 | struct perf_evsel *evsel; | |
798 | int ret; | |
799 | ||
800 | ret = do_write(fd, &nr_groups, sizeof(nr_groups)); | |
801 | if (ret < 0) | |
802 | return ret; | |
803 | ||
e5cadb93 | 804 | evlist__for_each_entry(evlist, evsel) { |
a8bb559b NK |
805 | if (perf_evsel__is_group_leader(evsel) && |
806 | evsel->nr_members > 1) { | |
807 | const char *name = evsel->group_name ?: "{anon_group}"; | |
808 | u32 leader_idx = evsel->idx; | |
809 | u32 nr_members = evsel->nr_members; | |
810 | ||
811 | ret = do_write_string(fd, name); | |
812 | if (ret < 0) | |
813 | return ret; | |
814 | ||
815 | ret = do_write(fd, &leader_idx, sizeof(leader_idx)); | |
816 | if (ret < 0) | |
817 | return ret; | |
818 | ||
819 | ret = do_write(fd, &nr_members, sizeof(nr_members)); | |
820 | if (ret < 0) | |
821 | return ret; | |
822 | } | |
823 | } | |
824 | return 0; | |
825 | } | |
826 | ||
fbe96f29 SE |
827 | /* |
828 | * default get_cpuid(): nothing gets recorded | |
829 | * actual implementation must be in arch/$(ARCH)/util/header.c | |
830 | */ | |
1d037ca1 IT |
831 | int __attribute__ ((weak)) get_cpuid(char *buffer __maybe_unused, |
832 | size_t sz __maybe_unused) | |
fbe96f29 SE |
833 | { |
834 | return -1; | |
835 | } | |
836 | ||
1d037ca1 IT |
837 | static int write_cpuid(int fd, struct perf_header *h __maybe_unused, |
838 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
839 | { |
840 | char buffer[64]; | |
841 | int ret; | |
842 | ||
843 | ret = get_cpuid(buffer, sizeof(buffer)); | |
844 | if (!ret) | |
845 | goto write_it; | |
846 | ||
847 | return -1; | |
848 | write_it: | |
849 | return do_write_string(fd, buffer); | |
850 | } | |
851 | ||
1d037ca1 IT |
852 | static int write_branch_stack(int fd __maybe_unused, |
853 | struct perf_header *h __maybe_unused, | |
854 | struct perf_evlist *evlist __maybe_unused) | |
330aa675 SE |
855 | { |
856 | return 0; | |
857 | } | |
858 | ||
99fa2984 | 859 | static int write_auxtrace(int fd, struct perf_header *h, |
4025ea40 AH |
860 | struct perf_evlist *evlist __maybe_unused) |
861 | { | |
99fa2984 AH |
862 | struct perf_session *session; |
863 | int err; | |
864 | ||
865 | session = container_of(h, struct perf_session, header); | |
866 | ||
867 | err = auxtrace_index__write(fd, &session->auxtrace_index); | |
868 | if (err < 0) | |
869 | pr_err("Failed to write auxtrace index\n"); | |
870 | return err; | |
4025ea40 AH |
871 | } |
872 | ||
720e98b5 JO |
873 | static int cpu_cache_level__sort(const void *a, const void *b) |
874 | { | |
875 | struct cpu_cache_level *cache_a = (struct cpu_cache_level *)a; | |
876 | struct cpu_cache_level *cache_b = (struct cpu_cache_level *)b; | |
877 | ||
878 | return cache_a->level - cache_b->level; | |
879 | } | |
880 | ||
881 | static bool cpu_cache_level__cmp(struct cpu_cache_level *a, struct cpu_cache_level *b) | |
882 | { | |
883 | if (a->level != b->level) | |
884 | return false; | |
885 | ||
886 | if (a->line_size != b->line_size) | |
887 | return false; | |
888 | ||
889 | if (a->sets != b->sets) | |
890 | return false; | |
891 | ||
892 | if (a->ways != b->ways) | |
893 | return false; | |
894 | ||
895 | if (strcmp(a->type, b->type)) | |
896 | return false; | |
897 | ||
898 | if (strcmp(a->size, b->size)) | |
899 | return false; | |
900 | ||
901 | if (strcmp(a->map, b->map)) | |
902 | return false; | |
903 | ||
904 | return true; | |
905 | } | |
906 | ||
907 | static int cpu_cache_level__read(struct cpu_cache_level *cache, u32 cpu, u16 level) | |
908 | { | |
909 | char path[PATH_MAX], file[PATH_MAX]; | |
910 | struct stat st; | |
911 | size_t len; | |
912 | ||
913 | scnprintf(path, PATH_MAX, "devices/system/cpu/cpu%d/cache/index%d/", cpu, level); | |
914 | scnprintf(file, PATH_MAX, "%s/%s", sysfs__mountpoint(), path); | |
915 | ||
916 | if (stat(file, &st)) | |
917 | return 1; | |
918 | ||
919 | scnprintf(file, PATH_MAX, "%s/level", path); | |
920 | if (sysfs__read_int(file, (int *) &cache->level)) | |
921 | return -1; | |
922 | ||
923 | scnprintf(file, PATH_MAX, "%s/coherency_line_size", path); | |
924 | if (sysfs__read_int(file, (int *) &cache->line_size)) | |
925 | return -1; | |
926 | ||
927 | scnprintf(file, PATH_MAX, "%s/number_of_sets", path); | |
928 | if (sysfs__read_int(file, (int *) &cache->sets)) | |
929 | return -1; | |
930 | ||
931 | scnprintf(file, PATH_MAX, "%s/ways_of_associativity", path); | |
932 | if (sysfs__read_int(file, (int *) &cache->ways)) | |
933 | return -1; | |
934 | ||
935 | scnprintf(file, PATH_MAX, "%s/type", path); | |
936 | if (sysfs__read_str(file, &cache->type, &len)) | |
937 | return -1; | |
938 | ||
939 | cache->type[len] = 0; | |
940 | cache->type = rtrim(cache->type); | |
941 | ||
942 | scnprintf(file, PATH_MAX, "%s/size", path); | |
943 | if (sysfs__read_str(file, &cache->size, &len)) { | |
944 | free(cache->type); | |
945 | return -1; | |
946 | } | |
947 | ||
948 | cache->size[len] = 0; | |
949 | cache->size = rtrim(cache->size); | |
950 | ||
951 | scnprintf(file, PATH_MAX, "%s/shared_cpu_list", path); | |
952 | if (sysfs__read_str(file, &cache->map, &len)) { | |
953 | free(cache->map); | |
954 | free(cache->type); | |
955 | return -1; | |
956 | } | |
957 | ||
958 | cache->map[len] = 0; | |
959 | cache->map = rtrim(cache->map); | |
960 | return 0; | |
961 | } | |
962 | ||
963 | static void cpu_cache_level__fprintf(FILE *out, struct cpu_cache_level *c) | |
964 | { | |
965 | fprintf(out, "L%d %-15s %8s [%s]\n", c->level, c->type, c->size, c->map); | |
966 | } | |
967 | ||
968 | static int build_caches(struct cpu_cache_level caches[], u32 size, u32 *cntp) | |
969 | { | |
970 | u32 i, cnt = 0; | |
971 | long ncpus; | |
972 | u32 nr, cpu; | |
973 | u16 level; | |
974 | ||
975 | ncpus = sysconf(_SC_NPROCESSORS_CONF); | |
976 | if (ncpus < 0) | |
977 | return -1; | |
978 | ||
979 | nr = (u32)(ncpus & UINT_MAX); | |
980 | ||
981 | for (cpu = 0; cpu < nr; cpu++) { | |
982 | for (level = 0; level < 10; level++) { | |
983 | struct cpu_cache_level c; | |
984 | int err; | |
985 | ||
986 | err = cpu_cache_level__read(&c, cpu, level); | |
987 | if (err < 0) | |
988 | return err; | |
989 | ||
990 | if (err == 1) | |
991 | break; | |
992 | ||
993 | for (i = 0; i < cnt; i++) { | |
994 | if (cpu_cache_level__cmp(&c, &caches[i])) | |
995 | break; | |
996 | } | |
997 | ||
998 | if (i == cnt) | |
999 | caches[cnt++] = c; | |
1000 | else | |
1001 | cpu_cache_level__free(&c); | |
1002 | ||
1003 | if (WARN_ONCE(cnt == size, "way too many cpu caches..")) | |
1004 | goto out; | |
1005 | } | |
1006 | } | |
1007 | out: | |
1008 | *cntp = cnt; | |
1009 | return 0; | |
1010 | } | |
1011 | ||
1012 | #define MAX_CACHES 2000 | |
1013 | ||
1014 | static int write_cache(int fd, struct perf_header *h __maybe_unused, | |
1015 | struct perf_evlist *evlist __maybe_unused) | |
1016 | { | |
1017 | struct cpu_cache_level caches[MAX_CACHES]; | |
1018 | u32 cnt = 0, i, version = 1; | |
1019 | int ret; | |
1020 | ||
1021 | ret = build_caches(caches, MAX_CACHES, &cnt); | |
1022 | if (ret) | |
1023 | goto out; | |
1024 | ||
1025 | qsort(&caches, cnt, sizeof(struct cpu_cache_level), cpu_cache_level__sort); | |
1026 | ||
1027 | ret = do_write(fd, &version, sizeof(u32)); | |
1028 | if (ret < 0) | |
1029 | goto out; | |
1030 | ||
1031 | ret = do_write(fd, &cnt, sizeof(u32)); | |
1032 | if (ret < 0) | |
1033 | goto out; | |
1034 | ||
1035 | for (i = 0; i < cnt; i++) { | |
1036 | struct cpu_cache_level *c = &caches[i]; | |
1037 | ||
1038 | #define _W(v) \ | |
1039 | ret = do_write(fd, &c->v, sizeof(u32)); \ | |
1040 | if (ret < 0) \ | |
1041 | goto out; | |
1042 | ||
1043 | _W(level) | |
1044 | _W(line_size) | |
1045 | _W(sets) | |
1046 | _W(ways) | |
1047 | #undef _W | |
1048 | ||
1049 | #define _W(v) \ | |
1050 | ret = do_write_string(fd, (const char *) c->v); \ | |
1051 | if (ret < 0) \ | |
1052 | goto out; | |
1053 | ||
1054 | _W(type) | |
1055 | _W(size) | |
1056 | _W(map) | |
1057 | #undef _W | |
1058 | } | |
1059 | ||
1060 | out: | |
1061 | for (i = 0; i < cnt; i++) | |
1062 | cpu_cache_level__free(&caches[i]); | |
1063 | return ret; | |
1064 | } | |
1065 | ||
ffa517ad JO |
1066 | static int write_stat(int fd __maybe_unused, |
1067 | struct perf_header *h __maybe_unused, | |
1068 | struct perf_evlist *evlist __maybe_unused) | |
1069 | { | |
1070 | return 0; | |
1071 | } | |
1072 | ||
7e94cfcc NK |
1073 | static void print_hostname(struct perf_header *ph, int fd __maybe_unused, |
1074 | FILE *fp) | |
fbe96f29 | 1075 | { |
7e94cfcc | 1076 | fprintf(fp, "# hostname : %s\n", ph->env.hostname); |
fbe96f29 SE |
1077 | } |
1078 | ||
7e94cfcc NK |
1079 | static void print_osrelease(struct perf_header *ph, int fd __maybe_unused, |
1080 | FILE *fp) | |
fbe96f29 | 1081 | { |
7e94cfcc | 1082 | fprintf(fp, "# os release : %s\n", ph->env.os_release); |
fbe96f29 SE |
1083 | } |
1084 | ||
7e94cfcc | 1085 | static void print_arch(struct perf_header *ph, int fd __maybe_unused, FILE *fp) |
fbe96f29 | 1086 | { |
7e94cfcc | 1087 | fprintf(fp, "# arch : %s\n", ph->env.arch); |
fbe96f29 SE |
1088 | } |
1089 | ||
7e94cfcc NK |
1090 | static void print_cpudesc(struct perf_header *ph, int fd __maybe_unused, |
1091 | FILE *fp) | |
fbe96f29 | 1092 | { |
7e94cfcc | 1093 | fprintf(fp, "# cpudesc : %s\n", ph->env.cpu_desc); |
fbe96f29 SE |
1094 | } |
1095 | ||
7e94cfcc NK |
1096 | static void print_nrcpus(struct perf_header *ph, int fd __maybe_unused, |
1097 | FILE *fp) | |
fbe96f29 | 1098 | { |
7e94cfcc NK |
1099 | fprintf(fp, "# nrcpus online : %u\n", ph->env.nr_cpus_online); |
1100 | fprintf(fp, "# nrcpus avail : %u\n", ph->env.nr_cpus_avail); | |
fbe96f29 SE |
1101 | } |
1102 | ||
7e94cfcc NK |
1103 | static void print_version(struct perf_header *ph, int fd __maybe_unused, |
1104 | FILE *fp) | |
fbe96f29 | 1105 | { |
7e94cfcc | 1106 | fprintf(fp, "# perf version : %s\n", ph->env.version); |
fbe96f29 SE |
1107 | } |
1108 | ||
7e94cfcc NK |
1109 | static void print_cmdline(struct perf_header *ph, int fd __maybe_unused, |
1110 | FILE *fp) | |
fbe96f29 | 1111 | { |
7e94cfcc | 1112 | int nr, i; |
fbe96f29 | 1113 | |
7e94cfcc | 1114 | nr = ph->env.nr_cmdline; |
fbe96f29 SE |
1115 | |
1116 | fprintf(fp, "# cmdline : "); | |
1117 | ||
768dd3f3 JO |
1118 | for (i = 0; i < nr; i++) |
1119 | fprintf(fp, "%s ", ph->env.cmdline_argv[i]); | |
fbe96f29 SE |
1120 | fputc('\n', fp); |
1121 | } | |
1122 | ||
7e94cfcc NK |
1123 | static void print_cpu_topology(struct perf_header *ph, int fd __maybe_unused, |
1124 | FILE *fp) | |
fbe96f29 | 1125 | { |
7e94cfcc | 1126 | int nr, i; |
fbe96f29 | 1127 | char *str; |
2bb00d2f | 1128 | int cpu_nr = ph->env.nr_cpus_online; |
fbe96f29 | 1129 | |
7e94cfcc NK |
1130 | nr = ph->env.nr_sibling_cores; |
1131 | str = ph->env.sibling_cores; | |
fbe96f29 SE |
1132 | |
1133 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 1134 | fprintf(fp, "# sibling cores : %s\n", str); |
7e94cfcc | 1135 | str += strlen(str) + 1; |
fbe96f29 SE |
1136 | } |
1137 | ||
7e94cfcc NK |
1138 | nr = ph->env.nr_sibling_threads; |
1139 | str = ph->env.sibling_threads; | |
fbe96f29 SE |
1140 | |
1141 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 1142 | fprintf(fp, "# sibling threads : %s\n", str); |
7e94cfcc | 1143 | str += strlen(str) + 1; |
fbe96f29 | 1144 | } |
2bb00d2f KL |
1145 | |
1146 | if (ph->env.cpu != NULL) { | |
1147 | for (i = 0; i < cpu_nr; i++) | |
1148 | fprintf(fp, "# CPU %d: Core ID %d, Socket ID %d\n", i, | |
1149 | ph->env.cpu[i].core_id, ph->env.cpu[i].socket_id); | |
1150 | } else | |
1151 | fprintf(fp, "# Core ID and Socket ID information is not available\n"); | |
fbe96f29 SE |
1152 | } |
1153 | ||
4e1b9c67 | 1154 | static void free_event_desc(struct perf_evsel *events) |
fbe96f29 | 1155 | { |
4e1b9c67 RR |
1156 | struct perf_evsel *evsel; |
1157 | ||
1158 | if (!events) | |
1159 | return; | |
1160 | ||
1161 | for (evsel = events; evsel->attr.size; evsel++) { | |
74cf249d ACM |
1162 | zfree(&evsel->name); |
1163 | zfree(&evsel->id); | |
4e1b9c67 RR |
1164 | } |
1165 | ||
1166 | free(events); | |
1167 | } | |
1168 | ||
1169 | static struct perf_evsel * | |
1170 | read_event_desc(struct perf_header *ph, int fd) | |
1171 | { | |
1172 | struct perf_evsel *evsel, *events = NULL; | |
1173 | u64 *id; | |
fbe96f29 | 1174 | void *buf = NULL; |
62db9068 SE |
1175 | u32 nre, sz, nr, i, j; |
1176 | ssize_t ret; | |
1177 | size_t msz; | |
fbe96f29 SE |
1178 | |
1179 | /* number of events */ | |
5323f60c | 1180 | ret = readn(fd, &nre, sizeof(nre)); |
fbe96f29 SE |
1181 | if (ret != (ssize_t)sizeof(nre)) |
1182 | goto error; | |
1183 | ||
1184 | if (ph->needs_swap) | |
1185 | nre = bswap_32(nre); | |
1186 | ||
5323f60c | 1187 | ret = readn(fd, &sz, sizeof(sz)); |
fbe96f29 SE |
1188 | if (ret != (ssize_t)sizeof(sz)) |
1189 | goto error; | |
1190 | ||
1191 | if (ph->needs_swap) | |
1192 | sz = bswap_32(sz); | |
1193 | ||
62db9068 | 1194 | /* buffer to hold on file attr struct */ |
fbe96f29 SE |
1195 | buf = malloc(sz); |
1196 | if (!buf) | |
1197 | goto error; | |
1198 | ||
4e1b9c67 RR |
1199 | /* the last event terminates with evsel->attr.size == 0: */ |
1200 | events = calloc(nre + 1, sizeof(*events)); | |
1201 | if (!events) | |
1202 | goto error; | |
1203 | ||
1204 | msz = sizeof(evsel->attr); | |
9fafd98f | 1205 | if (sz < msz) |
fbe96f29 SE |
1206 | msz = sz; |
1207 | ||
4e1b9c67 RR |
1208 | for (i = 0, evsel = events; i < nre; evsel++, i++) { |
1209 | evsel->idx = i; | |
fbe96f29 | 1210 | |
62db9068 SE |
1211 | /* |
1212 | * must read entire on-file attr struct to | |
1213 | * sync up with layout. | |
1214 | */ | |
5323f60c | 1215 | ret = readn(fd, buf, sz); |
fbe96f29 SE |
1216 | if (ret != (ssize_t)sz) |
1217 | goto error; | |
1218 | ||
1219 | if (ph->needs_swap) | |
1220 | perf_event__attr_swap(buf); | |
1221 | ||
4e1b9c67 | 1222 | memcpy(&evsel->attr, buf, msz); |
fbe96f29 | 1223 | |
5323f60c | 1224 | ret = readn(fd, &nr, sizeof(nr)); |
fbe96f29 SE |
1225 | if (ret != (ssize_t)sizeof(nr)) |
1226 | goto error; | |
1227 | ||
0807d2d8 | 1228 | if (ph->needs_swap) { |
fbe96f29 | 1229 | nr = bswap_32(nr); |
0807d2d8 ACM |
1230 | evsel->needs_swap = true; |
1231 | } | |
fbe96f29 | 1232 | |
4e1b9c67 RR |
1233 | evsel->name = do_read_string(fd, ph); |
1234 | ||
1235 | if (!nr) | |
1236 | continue; | |
1237 | ||
1238 | id = calloc(nr, sizeof(*id)); | |
1239 | if (!id) | |
1240 | goto error; | |
1241 | evsel->ids = nr; | |
1242 | evsel->id = id; | |
1243 | ||
1244 | for (j = 0 ; j < nr; j++) { | |
5323f60c | 1245 | ret = readn(fd, id, sizeof(*id)); |
4e1b9c67 RR |
1246 | if (ret != (ssize_t)sizeof(*id)) |
1247 | goto error; | |
1248 | if (ph->needs_swap) | |
1249 | *id = bswap_64(*id); | |
1250 | id++; | |
1251 | } | |
1252 | } | |
1253 | out: | |
04662523 | 1254 | free(buf); |
4e1b9c67 RR |
1255 | return events; |
1256 | error: | |
4cc97614 | 1257 | free_event_desc(events); |
4e1b9c67 RR |
1258 | events = NULL; |
1259 | goto out; | |
1260 | } | |
1261 | ||
2c5e8c52 PZ |
1262 | static int __desc_attr__fprintf(FILE *fp, const char *name, const char *val, |
1263 | void *priv __attribute__((unused))) | |
1264 | { | |
1265 | return fprintf(fp, ", %s = %s", name, val); | |
1266 | } | |
1267 | ||
4e1b9c67 RR |
1268 | static void print_event_desc(struct perf_header *ph, int fd, FILE *fp) |
1269 | { | |
1270 | struct perf_evsel *evsel, *events = read_event_desc(ph, fd); | |
1271 | u32 j; | |
1272 | u64 *id; | |
1273 | ||
1274 | if (!events) { | |
1275 | fprintf(fp, "# event desc: not available or unable to read\n"); | |
1276 | return; | |
1277 | } | |
1278 | ||
1279 | for (evsel = events; evsel->attr.size; evsel++) { | |
1280 | fprintf(fp, "# event : name = %s, ", evsel->name); | |
fbe96f29 | 1281 | |
4e1b9c67 | 1282 | if (evsel->ids) { |
fbe96f29 | 1283 | fprintf(fp, ", id = {"); |
4e1b9c67 RR |
1284 | for (j = 0, id = evsel->id; j < evsel->ids; j++, id++) { |
1285 | if (j) | |
1286 | fputc(',', fp); | |
1287 | fprintf(fp, " %"PRIu64, *id); | |
1288 | } | |
fbe96f29 | 1289 | fprintf(fp, " }"); |
4e1b9c67 | 1290 | } |
814c8c38 | 1291 | |
2c5e8c52 | 1292 | perf_event_attr__fprintf(fp, &evsel->attr, __desc_attr__fprintf, NULL); |
4e1b9c67 | 1293 | |
fbe96f29 SE |
1294 | fputc('\n', fp); |
1295 | } | |
4e1b9c67 RR |
1296 | |
1297 | free_event_desc(events); | |
fbe96f29 SE |
1298 | } |
1299 | ||
7e94cfcc | 1300 | static void print_total_mem(struct perf_header *ph, int fd __maybe_unused, |
1d037ca1 | 1301 | FILE *fp) |
fbe96f29 | 1302 | { |
7e94cfcc | 1303 | fprintf(fp, "# total memory : %Lu kB\n", ph->env.total_mem); |
fbe96f29 SE |
1304 | } |
1305 | ||
7e94cfcc | 1306 | static void print_numa_topology(struct perf_header *ph, int fd __maybe_unused, |
1d037ca1 | 1307 | FILE *fp) |
fbe96f29 | 1308 | { |
c60da22a JO |
1309 | int i; |
1310 | struct numa_node *n; | |
fbe96f29 | 1311 | |
c60da22a JO |
1312 | for (i = 0; i < ph->env.nr_numa_nodes; i++) { |
1313 | n = &ph->env.numa_nodes[i]; | |
fbe96f29 | 1314 | |
fbe96f29 SE |
1315 | fprintf(fp, "# node%u meminfo : total = %"PRIu64" kB," |
1316 | " free = %"PRIu64" kB\n", | |
c60da22a | 1317 | n->node, n->mem_total, n->mem_free); |
1234471e | 1318 | |
c60da22a JO |
1319 | fprintf(fp, "# node%u cpu list : ", n->node); |
1320 | cpu_map__fprintf(n->map, fp); | |
fbe96f29 | 1321 | } |
fbe96f29 SE |
1322 | } |
1323 | ||
7e94cfcc | 1324 | static void print_cpuid(struct perf_header *ph, int fd __maybe_unused, FILE *fp) |
fbe96f29 | 1325 | { |
7e94cfcc | 1326 | fprintf(fp, "# cpuid : %s\n", ph->env.cpuid); |
fbe96f29 SE |
1327 | } |
1328 | ||
1d037ca1 | 1329 | static void print_branch_stack(struct perf_header *ph __maybe_unused, |
7e94cfcc | 1330 | int fd __maybe_unused, FILE *fp) |
330aa675 SE |
1331 | { |
1332 | fprintf(fp, "# contains samples with branch stack\n"); | |
1333 | } | |
1334 | ||
4025ea40 AH |
1335 | static void print_auxtrace(struct perf_header *ph __maybe_unused, |
1336 | int fd __maybe_unused, FILE *fp) | |
1337 | { | |
1338 | fprintf(fp, "# contains AUX area data (e.g. instruction trace)\n"); | |
1339 | } | |
1340 | ||
ffa517ad JO |
1341 | static void print_stat(struct perf_header *ph __maybe_unused, |
1342 | int fd __maybe_unused, FILE *fp) | |
1343 | { | |
1344 | fprintf(fp, "# contains stat data\n"); | |
1345 | } | |
1346 | ||
720e98b5 JO |
1347 | static void print_cache(struct perf_header *ph __maybe_unused, |
1348 | int fd __maybe_unused, FILE *fp __maybe_unused) | |
1349 | { | |
1350 | int i; | |
1351 | ||
1352 | fprintf(fp, "# CPU cache info:\n"); | |
1353 | for (i = 0; i < ph->env.caches_cnt; i++) { | |
1354 | fprintf(fp, "# "); | |
1355 | cpu_cache_level__fprintf(fp, &ph->env.caches[i]); | |
1356 | } | |
1357 | } | |
1358 | ||
7e94cfcc NK |
1359 | static void print_pmu_mappings(struct perf_header *ph, int fd __maybe_unused, |
1360 | FILE *fp) | |
50a9667c RR |
1361 | { |
1362 | const char *delimiter = "# pmu mappings: "; | |
7e94cfcc | 1363 | char *str, *tmp; |
50a9667c RR |
1364 | u32 pmu_num; |
1365 | u32 type; | |
1366 | ||
7e94cfcc | 1367 | pmu_num = ph->env.nr_pmu_mappings; |
50a9667c RR |
1368 | if (!pmu_num) { |
1369 | fprintf(fp, "# pmu mappings: not available\n"); | |
1370 | return; | |
1371 | } | |
1372 | ||
7e94cfcc NK |
1373 | str = ph->env.pmu_mappings; |
1374 | ||
50a9667c | 1375 | while (pmu_num) { |
7e94cfcc NK |
1376 | type = strtoul(str, &tmp, 0); |
1377 | if (*tmp != ':') | |
1378 | goto error; | |
1379 | ||
1380 | str = tmp + 1; | |
1381 | fprintf(fp, "%s%s = %" PRIu32, delimiter, str, type); | |
be4a2ded | 1382 | |
50a9667c | 1383 | delimiter = ", "; |
7e94cfcc NK |
1384 | str += strlen(str) + 1; |
1385 | pmu_num--; | |
50a9667c RR |
1386 | } |
1387 | ||
1388 | fprintf(fp, "\n"); | |
1389 | ||
1390 | if (!pmu_num) | |
1391 | return; | |
1392 | error: | |
1393 | fprintf(fp, "# pmu mappings: unable to read\n"); | |
1394 | } | |
1395 | ||
a8bb559b NK |
1396 | static void print_group_desc(struct perf_header *ph, int fd __maybe_unused, |
1397 | FILE *fp) | |
1398 | { | |
1399 | struct perf_session *session; | |
1400 | struct perf_evsel *evsel; | |
1401 | u32 nr = 0; | |
1402 | ||
1403 | session = container_of(ph, struct perf_session, header); | |
1404 | ||
e5cadb93 | 1405 | evlist__for_each_entry(session->evlist, evsel) { |
a8bb559b NK |
1406 | if (perf_evsel__is_group_leader(evsel) && |
1407 | evsel->nr_members > 1) { | |
1408 | fprintf(fp, "# group: %s{%s", evsel->group_name ?: "", | |
1409 | perf_evsel__name(evsel)); | |
1410 | ||
1411 | nr = evsel->nr_members - 1; | |
1412 | } else if (nr) { | |
1413 | fprintf(fp, ",%s", perf_evsel__name(evsel)); | |
1414 | ||
1415 | if (--nr == 0) | |
1416 | fprintf(fp, "}\n"); | |
1417 | } | |
1418 | } | |
1419 | } | |
1420 | ||
08d95bd2 RR |
1421 | static int __event_process_build_id(struct build_id_event *bev, |
1422 | char *filename, | |
1423 | struct perf_session *session) | |
1424 | { | |
1425 | int err = -1; | |
08d95bd2 | 1426 | struct machine *machine; |
1f121b03 | 1427 | u16 cpumode; |
08d95bd2 RR |
1428 | struct dso *dso; |
1429 | enum dso_kernel_type dso_type; | |
1430 | ||
1431 | machine = perf_session__findnew_machine(session, bev->pid); | |
1432 | if (!machine) | |
1433 | goto out; | |
1434 | ||
1f121b03 | 1435 | cpumode = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
08d95bd2 | 1436 | |
1f121b03 | 1437 | switch (cpumode) { |
08d95bd2 RR |
1438 | case PERF_RECORD_MISC_KERNEL: |
1439 | dso_type = DSO_TYPE_KERNEL; | |
08d95bd2 RR |
1440 | break; |
1441 | case PERF_RECORD_MISC_GUEST_KERNEL: | |
1442 | dso_type = DSO_TYPE_GUEST_KERNEL; | |
08d95bd2 RR |
1443 | break; |
1444 | case PERF_RECORD_MISC_USER: | |
1445 | case PERF_RECORD_MISC_GUEST_USER: | |
1446 | dso_type = DSO_TYPE_USER; | |
08d95bd2 RR |
1447 | break; |
1448 | default: | |
1449 | goto out; | |
1450 | } | |
1451 | ||
aa7cc2ae | 1452 | dso = machine__findnew_dso(machine, filename); |
08d95bd2 | 1453 | if (dso != NULL) { |
b5d8bbe8 | 1454 | char sbuild_id[SBUILD_ID_SIZE]; |
08d95bd2 RR |
1455 | |
1456 | dso__set_build_id(dso, &bev->build_id); | |
1457 | ||
1f121b03 | 1458 | if (!is_kernel_module(filename, cpumode)) |
08d95bd2 RR |
1459 | dso->kernel = dso_type; |
1460 | ||
1461 | build_id__sprintf(dso->build_id, sizeof(dso->build_id), | |
1462 | sbuild_id); | |
1463 | pr_debug("build id event received for %s: %s\n", | |
1464 | dso->long_name, sbuild_id); | |
d3a7c489 | 1465 | dso__put(dso); |
08d95bd2 RR |
1466 | } |
1467 | ||
1468 | err = 0; | |
1469 | out: | |
1470 | return err; | |
1471 | } | |
1472 | ||
1473 | static int perf_header__read_build_ids_abi_quirk(struct perf_header *header, | |
1474 | int input, u64 offset, u64 size) | |
1475 | { | |
1476 | struct perf_session *session = container_of(header, struct perf_session, header); | |
1477 | struct { | |
1478 | struct perf_event_header header; | |
9ac3e487 | 1479 | u8 build_id[PERF_ALIGN(BUILD_ID_SIZE, sizeof(u64))]; |
08d95bd2 RR |
1480 | char filename[0]; |
1481 | } old_bev; | |
1482 | struct build_id_event bev; | |
1483 | char filename[PATH_MAX]; | |
1484 | u64 limit = offset + size; | |
1485 | ||
1486 | while (offset < limit) { | |
1487 | ssize_t len; | |
1488 | ||
5323f60c | 1489 | if (readn(input, &old_bev, sizeof(old_bev)) != sizeof(old_bev)) |
08d95bd2 RR |
1490 | return -1; |
1491 | ||
1492 | if (header->needs_swap) | |
1493 | perf_event_header__bswap(&old_bev.header); | |
1494 | ||
1495 | len = old_bev.header.size - sizeof(old_bev); | |
5323f60c | 1496 | if (readn(input, filename, len) != len) |
08d95bd2 RR |
1497 | return -1; |
1498 | ||
1499 | bev.header = old_bev.header; | |
1500 | ||
1501 | /* | |
1502 | * As the pid is the missing value, we need to fill | |
1503 | * it properly. The header.misc value give us nice hint. | |
1504 | */ | |
1505 | bev.pid = HOST_KERNEL_ID; | |
1506 | if (bev.header.misc == PERF_RECORD_MISC_GUEST_USER || | |
1507 | bev.header.misc == PERF_RECORD_MISC_GUEST_KERNEL) | |
1508 | bev.pid = DEFAULT_GUEST_KERNEL_ID; | |
1509 | ||
1510 | memcpy(bev.build_id, old_bev.build_id, sizeof(bev.build_id)); | |
1511 | __event_process_build_id(&bev, filename, session); | |
1512 | ||
1513 | offset += bev.header.size; | |
1514 | } | |
1515 | ||
1516 | return 0; | |
1517 | } | |
1518 | ||
1519 | static int perf_header__read_build_ids(struct perf_header *header, | |
1520 | int input, u64 offset, u64 size) | |
1521 | { | |
1522 | struct perf_session *session = container_of(header, struct perf_session, header); | |
1523 | struct build_id_event bev; | |
1524 | char filename[PATH_MAX]; | |
1525 | u64 limit = offset + size, orig_offset = offset; | |
1526 | int err = -1; | |
1527 | ||
1528 | while (offset < limit) { | |
1529 | ssize_t len; | |
1530 | ||
5323f60c | 1531 | if (readn(input, &bev, sizeof(bev)) != sizeof(bev)) |
08d95bd2 RR |
1532 | goto out; |
1533 | ||
1534 | if (header->needs_swap) | |
1535 | perf_event_header__bswap(&bev.header); | |
1536 | ||
1537 | len = bev.header.size - sizeof(bev); | |
5323f60c | 1538 | if (readn(input, filename, len) != len) |
08d95bd2 RR |
1539 | goto out; |
1540 | /* | |
1541 | * The a1645ce1 changeset: | |
1542 | * | |
1543 | * "perf: 'perf kvm' tool for monitoring guest performance from host" | |
1544 | * | |
1545 | * Added a field to struct build_id_event that broke the file | |
1546 | * format. | |
1547 | * | |
1548 | * Since the kernel build-id is the first entry, process the | |
1549 | * table using the old format if the well known | |
1550 | * '[kernel.kallsyms]' string for the kernel build-id has the | |
1551 | * first 4 characters chopped off (where the pid_t sits). | |
1552 | */ | |
1553 | if (memcmp(filename, "nel.kallsyms]", 13) == 0) { | |
1554 | if (lseek(input, orig_offset, SEEK_SET) == (off_t)-1) | |
1555 | return -1; | |
1556 | return perf_header__read_build_ids_abi_quirk(header, input, offset, size); | |
1557 | } | |
1558 | ||
1559 | __event_process_build_id(&bev, filename, session); | |
1560 | ||
1561 | offset += bev.header.size; | |
1562 | } | |
1563 | err = 0; | |
1564 | out: | |
1565 | return err; | |
1566 | } | |
1567 | ||
3d7eb86b NK |
1568 | static int process_tracing_data(struct perf_file_section *section __maybe_unused, |
1569 | struct perf_header *ph __maybe_unused, | |
1570 | int fd, void *data) | |
f1c67db7 | 1571 | { |
3dce2ce3 NK |
1572 | ssize_t ret = trace_report(fd, data, false); |
1573 | return ret < 0 ? -1 : 0; | |
f1c67db7 RR |
1574 | } |
1575 | ||
1576 | static int process_build_id(struct perf_file_section *section, | |
3d7eb86b | 1577 | struct perf_header *ph, int fd, |
1d037ca1 | 1578 | void *data __maybe_unused) |
f1c67db7 RR |
1579 | { |
1580 | if (perf_header__read_build_ids(ph, fd, section->offset, section->size)) | |
1581 | pr_debug("Failed to read buildids, continuing...\n"); | |
1582 | return 0; | |
1583 | } | |
1584 | ||
a1ae5655 | 1585 | static int process_hostname(struct perf_file_section *section __maybe_unused, |
3d7eb86b NK |
1586 | struct perf_header *ph, int fd, |
1587 | void *data __maybe_unused) | |
a1ae5655 NK |
1588 | { |
1589 | ph->env.hostname = do_read_string(fd, ph); | |
1590 | return ph->env.hostname ? 0 : -ENOMEM; | |
1591 | } | |
1592 | ||
1593 | static int process_osrelease(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1594 | struct perf_header *ph, int fd, |
1595 | void *data __maybe_unused) | |
a1ae5655 NK |
1596 | { |
1597 | ph->env.os_release = do_read_string(fd, ph); | |
1598 | return ph->env.os_release ? 0 : -ENOMEM; | |
1599 | } | |
1600 | ||
1601 | static int process_version(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1602 | struct perf_header *ph, int fd, |
1603 | void *data __maybe_unused) | |
a1ae5655 NK |
1604 | { |
1605 | ph->env.version = do_read_string(fd, ph); | |
1606 | return ph->env.version ? 0 : -ENOMEM; | |
1607 | } | |
1608 | ||
1609 | static int process_arch(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1610 | struct perf_header *ph, int fd, |
1611 | void *data __maybe_unused) | |
a1ae5655 NK |
1612 | { |
1613 | ph->env.arch = do_read_string(fd, ph); | |
1614 | return ph->env.arch ? 0 : -ENOMEM; | |
1615 | } | |
1616 | ||
1617 | static int process_nrcpus(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1618 | struct perf_header *ph, int fd, |
1619 | void *data __maybe_unused) | |
a1ae5655 | 1620 | { |
727ebd54 | 1621 | ssize_t ret; |
a1ae5655 NK |
1622 | u32 nr; |
1623 | ||
5323f60c | 1624 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1625 | if (ret != sizeof(nr)) |
1626 | return -1; | |
1627 | ||
1628 | if (ph->needs_swap) | |
1629 | nr = bswap_32(nr); | |
1630 | ||
caa47047 | 1631 | ph->env.nr_cpus_avail = nr; |
a1ae5655 | 1632 | |
5323f60c | 1633 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1634 | if (ret != sizeof(nr)) |
1635 | return -1; | |
1636 | ||
1637 | if (ph->needs_swap) | |
1638 | nr = bswap_32(nr); | |
1639 | ||
caa47047 | 1640 | ph->env.nr_cpus_online = nr; |
a1ae5655 NK |
1641 | return 0; |
1642 | } | |
1643 | ||
1644 | static int process_cpudesc(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1645 | struct perf_header *ph, int fd, |
1646 | void *data __maybe_unused) | |
a1ae5655 NK |
1647 | { |
1648 | ph->env.cpu_desc = do_read_string(fd, ph); | |
1649 | return ph->env.cpu_desc ? 0 : -ENOMEM; | |
1650 | } | |
1651 | ||
1652 | static int process_cpuid(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1653 | struct perf_header *ph, int fd, |
1654 | void *data __maybe_unused) | |
a1ae5655 NK |
1655 | { |
1656 | ph->env.cpuid = do_read_string(fd, ph); | |
1657 | return ph->env.cpuid ? 0 : -ENOMEM; | |
1658 | } | |
1659 | ||
1660 | static int process_total_mem(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1661 | struct perf_header *ph, int fd, |
1662 | void *data __maybe_unused) | |
a1ae5655 NK |
1663 | { |
1664 | uint64_t mem; | |
727ebd54 | 1665 | ssize_t ret; |
a1ae5655 | 1666 | |
5323f60c | 1667 | ret = readn(fd, &mem, sizeof(mem)); |
a1ae5655 NK |
1668 | if (ret != sizeof(mem)) |
1669 | return -1; | |
1670 | ||
1671 | if (ph->needs_swap) | |
1672 | mem = bswap_64(mem); | |
1673 | ||
1674 | ph->env.total_mem = mem; | |
1675 | return 0; | |
1676 | } | |
1677 | ||
7c2f7afd RR |
1678 | static struct perf_evsel * |
1679 | perf_evlist__find_by_index(struct perf_evlist *evlist, int idx) | |
1680 | { | |
1681 | struct perf_evsel *evsel; | |
1682 | ||
e5cadb93 | 1683 | evlist__for_each_entry(evlist, evsel) { |
7c2f7afd RR |
1684 | if (evsel->idx == idx) |
1685 | return evsel; | |
1686 | } | |
1687 | ||
1688 | return NULL; | |
1689 | } | |
1690 | ||
1691 | static void | |
3d7eb86b NK |
1692 | perf_evlist__set_event_name(struct perf_evlist *evlist, |
1693 | struct perf_evsel *event) | |
7c2f7afd RR |
1694 | { |
1695 | struct perf_evsel *evsel; | |
1696 | ||
1697 | if (!event->name) | |
1698 | return; | |
1699 | ||
1700 | evsel = perf_evlist__find_by_index(evlist, event->idx); | |
1701 | if (!evsel) | |
1702 | return; | |
1703 | ||
1704 | if (evsel->name) | |
1705 | return; | |
1706 | ||
1707 | evsel->name = strdup(event->name); | |
1708 | } | |
1709 | ||
1710 | static int | |
1d037ca1 | 1711 | process_event_desc(struct perf_file_section *section __maybe_unused, |
3d7eb86b | 1712 | struct perf_header *header, int fd, |
1d037ca1 | 1713 | void *data __maybe_unused) |
7c2f7afd | 1714 | { |
3d7eb86b | 1715 | struct perf_session *session; |
7c2f7afd RR |
1716 | struct perf_evsel *evsel, *events = read_event_desc(header, fd); |
1717 | ||
1718 | if (!events) | |
1719 | return 0; | |
1720 | ||
3d7eb86b | 1721 | session = container_of(header, struct perf_session, header); |
7c2f7afd RR |
1722 | for (evsel = events; evsel->attr.size; evsel++) |
1723 | perf_evlist__set_event_name(session->evlist, evsel); | |
1724 | ||
1725 | free_event_desc(events); | |
1726 | ||
1727 | return 0; | |
1728 | } | |
1729 | ||
768dd3f3 | 1730 | static int process_cmdline(struct perf_file_section *section, |
3d7eb86b NK |
1731 | struct perf_header *ph, int fd, |
1732 | void *data __maybe_unused) | |
a1ae5655 | 1733 | { |
727ebd54 | 1734 | ssize_t ret; |
768dd3f3 JO |
1735 | char *str, *cmdline = NULL, **argv = NULL; |
1736 | u32 nr, i, len = 0; | |
a1ae5655 | 1737 | |
5323f60c | 1738 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1739 | if (ret != sizeof(nr)) |
1740 | return -1; | |
1741 | ||
1742 | if (ph->needs_swap) | |
1743 | nr = bswap_32(nr); | |
1744 | ||
1745 | ph->env.nr_cmdline = nr; | |
768dd3f3 JO |
1746 | |
1747 | cmdline = zalloc(section->size + nr + 1); | |
1748 | if (!cmdline) | |
1749 | return -1; | |
1750 | ||
1751 | argv = zalloc(sizeof(char *) * (nr + 1)); | |
1752 | if (!argv) | |
1753 | goto error; | |
a1ae5655 NK |
1754 | |
1755 | for (i = 0; i < nr; i++) { | |
1756 | str = do_read_string(fd, ph); | |
1757 | if (!str) | |
1758 | goto error; | |
1759 | ||
768dd3f3 JO |
1760 | argv[i] = cmdline + len; |
1761 | memcpy(argv[i], str, strlen(str) + 1); | |
1762 | len += strlen(str) + 1; | |
a1ae5655 NK |
1763 | free(str); |
1764 | } | |
768dd3f3 JO |
1765 | ph->env.cmdline = cmdline; |
1766 | ph->env.cmdline_argv = (const char **) argv; | |
a1ae5655 NK |
1767 | return 0; |
1768 | ||
1769 | error: | |
768dd3f3 JO |
1770 | free(argv); |
1771 | free(cmdline); | |
a1ae5655 NK |
1772 | return -1; |
1773 | } | |
1774 | ||
2bb00d2f | 1775 | static int process_cpu_topology(struct perf_file_section *section, |
3d7eb86b NK |
1776 | struct perf_header *ph, int fd, |
1777 | void *data __maybe_unused) | |
a1ae5655 | 1778 | { |
727ebd54 | 1779 | ssize_t ret; |
a1ae5655 NK |
1780 | u32 nr, i; |
1781 | char *str; | |
1782 | struct strbuf sb; | |
2bb00d2f KL |
1783 | int cpu_nr = ph->env.nr_cpus_online; |
1784 | u64 size = 0; | |
1785 | ||
1786 | ph->env.cpu = calloc(cpu_nr, sizeof(*ph->env.cpu)); | |
1787 | if (!ph->env.cpu) | |
1788 | return -1; | |
a1ae5655 | 1789 | |
5323f60c | 1790 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 | 1791 | if (ret != sizeof(nr)) |
2bb00d2f | 1792 | goto free_cpu; |
a1ae5655 NK |
1793 | |
1794 | if (ph->needs_swap) | |
1795 | nr = bswap_32(nr); | |
1796 | ||
1797 | ph->env.nr_sibling_cores = nr; | |
2bb00d2f | 1798 | size += sizeof(u32); |
642aadaa MH |
1799 | if (strbuf_init(&sb, 128) < 0) |
1800 | goto free_cpu; | |
a1ae5655 NK |
1801 | |
1802 | for (i = 0; i < nr; i++) { | |
1803 | str = do_read_string(fd, ph); | |
1804 | if (!str) | |
1805 | goto error; | |
1806 | ||
1807 | /* include a NULL character at the end */ | |
642aadaa MH |
1808 | if (strbuf_add(&sb, str, strlen(str) + 1) < 0) |
1809 | goto error; | |
2bb00d2f | 1810 | size += string_size(str); |
a1ae5655 NK |
1811 | free(str); |
1812 | } | |
1813 | ph->env.sibling_cores = strbuf_detach(&sb, NULL); | |
1814 | ||
5323f60c | 1815 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1816 | if (ret != sizeof(nr)) |
1817 | return -1; | |
1818 | ||
1819 | if (ph->needs_swap) | |
1820 | nr = bswap_32(nr); | |
1821 | ||
1822 | ph->env.nr_sibling_threads = nr; | |
2bb00d2f | 1823 | size += sizeof(u32); |
a1ae5655 NK |
1824 | |
1825 | for (i = 0; i < nr; i++) { | |
1826 | str = do_read_string(fd, ph); | |
1827 | if (!str) | |
1828 | goto error; | |
1829 | ||
1830 | /* include a NULL character at the end */ | |
642aadaa MH |
1831 | if (strbuf_add(&sb, str, strlen(str) + 1) < 0) |
1832 | goto error; | |
2bb00d2f | 1833 | size += string_size(str); |
a1ae5655 NK |
1834 | free(str); |
1835 | } | |
1836 | ph->env.sibling_threads = strbuf_detach(&sb, NULL); | |
2bb00d2f KL |
1837 | |
1838 | /* | |
1839 | * The header may be from old perf, | |
1840 | * which doesn't include core id and socket id information. | |
1841 | */ | |
1842 | if (section->size <= size) { | |
1843 | zfree(&ph->env.cpu); | |
1844 | return 0; | |
1845 | } | |
1846 | ||
1847 | for (i = 0; i < (u32)cpu_nr; i++) { | |
1848 | ret = readn(fd, &nr, sizeof(nr)); | |
1849 | if (ret != sizeof(nr)) | |
1850 | goto free_cpu; | |
1851 | ||
1852 | if (ph->needs_swap) | |
1853 | nr = bswap_32(nr); | |
1854 | ||
2bb00d2f KL |
1855 | ph->env.cpu[i].core_id = nr; |
1856 | ||
1857 | ret = readn(fd, &nr, sizeof(nr)); | |
1858 | if (ret != sizeof(nr)) | |
1859 | goto free_cpu; | |
1860 | ||
1861 | if (ph->needs_swap) | |
1862 | nr = bswap_32(nr); | |
1863 | ||
1864 | if (nr > (u32)cpu_nr) { | |
1865 | pr_debug("socket_id number is too big." | |
1866 | "You may need to upgrade the perf tool.\n"); | |
1867 | goto free_cpu; | |
1868 | } | |
1869 | ||
1870 | ph->env.cpu[i].socket_id = nr; | |
1871 | } | |
1872 | ||
a1ae5655 NK |
1873 | return 0; |
1874 | ||
1875 | error: | |
1876 | strbuf_release(&sb); | |
2bb00d2f KL |
1877 | free_cpu: |
1878 | zfree(&ph->env.cpu); | |
a1ae5655 NK |
1879 | return -1; |
1880 | } | |
1881 | ||
1882 | static int process_numa_topology(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1883 | struct perf_header *ph, int fd, |
1884 | void *data __maybe_unused) | |
a1ae5655 | 1885 | { |
c60da22a | 1886 | struct numa_node *nodes, *n; |
727ebd54 | 1887 | ssize_t ret; |
c60da22a | 1888 | u32 nr, i; |
a1ae5655 | 1889 | char *str; |
a1ae5655 NK |
1890 | |
1891 | /* nr nodes */ | |
5323f60c | 1892 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 | 1893 | if (ret != sizeof(nr)) |
642aadaa | 1894 | return -1; |
a1ae5655 NK |
1895 | |
1896 | if (ph->needs_swap) | |
1897 | nr = bswap_32(nr); | |
1898 | ||
1899 | ph->env.nr_numa_nodes = nr; | |
c60da22a JO |
1900 | nodes = zalloc(sizeof(*nodes) * nr); |
1901 | if (!nodes) | |
1902 | return -ENOMEM; | |
a1ae5655 NK |
1903 | |
1904 | for (i = 0; i < nr; i++) { | |
c60da22a JO |
1905 | n = &nodes[i]; |
1906 | ||
a1ae5655 | 1907 | /* node number */ |
c60da22a JO |
1908 | ret = readn(fd, &n->node, sizeof(u32)); |
1909 | if (ret != sizeof(n->node)) | |
a1ae5655 NK |
1910 | goto error; |
1911 | ||
c60da22a | 1912 | ret = readn(fd, &n->mem_total, sizeof(u64)); |
a1ae5655 NK |
1913 | if (ret != sizeof(u64)) |
1914 | goto error; | |
1915 | ||
c60da22a | 1916 | ret = readn(fd, &n->mem_free, sizeof(u64)); |
a1ae5655 NK |
1917 | if (ret != sizeof(u64)) |
1918 | goto error; | |
1919 | ||
1920 | if (ph->needs_swap) { | |
c60da22a JO |
1921 | n->node = bswap_32(n->node); |
1922 | n->mem_total = bswap_64(n->mem_total); | |
1923 | n->mem_free = bswap_64(n->mem_free); | |
a1ae5655 NK |
1924 | } |
1925 | ||
a1ae5655 NK |
1926 | str = do_read_string(fd, ph); |
1927 | if (!str) | |
1928 | goto error; | |
1929 | ||
c60da22a JO |
1930 | n->map = cpu_map__new(str); |
1931 | if (!n->map) | |
642aadaa | 1932 | goto error; |
c60da22a | 1933 | |
a1ae5655 NK |
1934 | free(str); |
1935 | } | |
c60da22a | 1936 | ph->env.numa_nodes = nodes; |
a1ae5655 NK |
1937 | return 0; |
1938 | ||
1939 | error: | |
c60da22a | 1940 | free(nodes); |
a1ae5655 NK |
1941 | return -1; |
1942 | } | |
1943 | ||
1944 | static int process_pmu_mappings(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1945 | struct perf_header *ph, int fd, |
1946 | void *data __maybe_unused) | |
a1ae5655 | 1947 | { |
727ebd54 | 1948 | ssize_t ret; |
a1ae5655 NK |
1949 | char *name; |
1950 | u32 pmu_num; | |
1951 | u32 type; | |
1952 | struct strbuf sb; | |
1953 | ||
5323f60c | 1954 | ret = readn(fd, &pmu_num, sizeof(pmu_num)); |
a1ae5655 NK |
1955 | if (ret != sizeof(pmu_num)) |
1956 | return -1; | |
1957 | ||
1958 | if (ph->needs_swap) | |
1959 | pmu_num = bswap_32(pmu_num); | |
1960 | ||
1961 | if (!pmu_num) { | |
1962 | pr_debug("pmu mappings not available\n"); | |
1963 | return 0; | |
1964 | } | |
1965 | ||
1966 | ph->env.nr_pmu_mappings = pmu_num; | |
642aadaa MH |
1967 | if (strbuf_init(&sb, 128) < 0) |
1968 | return -1; | |
a1ae5655 NK |
1969 | |
1970 | while (pmu_num) { | |
5323f60c | 1971 | if (readn(fd, &type, sizeof(type)) != sizeof(type)) |
a1ae5655 NK |
1972 | goto error; |
1973 | if (ph->needs_swap) | |
1974 | type = bswap_32(type); | |
1975 | ||
1976 | name = do_read_string(fd, ph); | |
1977 | if (!name) | |
1978 | goto error; | |
1979 | ||
642aadaa MH |
1980 | if (strbuf_addf(&sb, "%u:%s", type, name) < 0) |
1981 | goto error; | |
a1ae5655 | 1982 | /* include a NULL character at the end */ |
642aadaa MH |
1983 | if (strbuf_add(&sb, "", 1) < 0) |
1984 | goto error; | |
a1ae5655 | 1985 | |
e0838e02 KL |
1986 | if (!strcmp(name, "msr")) |
1987 | ph->env.msr_pmu_type = type; | |
1988 | ||
a1ae5655 NK |
1989 | free(name); |
1990 | pmu_num--; | |
1991 | } | |
1992 | ph->env.pmu_mappings = strbuf_detach(&sb, NULL); | |
1993 | return 0; | |
1994 | ||
1995 | error: | |
1996 | strbuf_release(&sb); | |
1997 | return -1; | |
1998 | } | |
1999 | ||
a8bb559b NK |
2000 | static int process_group_desc(struct perf_file_section *section __maybe_unused, |
2001 | struct perf_header *ph, int fd, | |
2002 | void *data __maybe_unused) | |
2003 | { | |
2004 | size_t ret = -1; | |
2005 | u32 i, nr, nr_groups; | |
2006 | struct perf_session *session; | |
2007 | struct perf_evsel *evsel, *leader = NULL; | |
2008 | struct group_desc { | |
2009 | char *name; | |
2010 | u32 leader_idx; | |
2011 | u32 nr_members; | |
2012 | } *desc; | |
2013 | ||
2014 | if (readn(fd, &nr_groups, sizeof(nr_groups)) != sizeof(nr_groups)) | |
2015 | return -1; | |
2016 | ||
2017 | if (ph->needs_swap) | |
2018 | nr_groups = bswap_32(nr_groups); | |
2019 | ||
2020 | ph->env.nr_groups = nr_groups; | |
2021 | if (!nr_groups) { | |
2022 | pr_debug("group desc not available\n"); | |
2023 | return 0; | |
2024 | } | |
2025 | ||
2026 | desc = calloc(nr_groups, sizeof(*desc)); | |
2027 | if (!desc) | |
2028 | return -1; | |
2029 | ||
2030 | for (i = 0; i < nr_groups; i++) { | |
2031 | desc[i].name = do_read_string(fd, ph); | |
2032 | if (!desc[i].name) | |
2033 | goto out_free; | |
2034 | ||
2035 | if (readn(fd, &desc[i].leader_idx, sizeof(u32)) != sizeof(u32)) | |
2036 | goto out_free; | |
2037 | ||
2038 | if (readn(fd, &desc[i].nr_members, sizeof(u32)) != sizeof(u32)) | |
2039 | goto out_free; | |
2040 | ||
2041 | if (ph->needs_swap) { | |
2042 | desc[i].leader_idx = bswap_32(desc[i].leader_idx); | |
2043 | desc[i].nr_members = bswap_32(desc[i].nr_members); | |
2044 | } | |
2045 | } | |
2046 | ||
2047 | /* | |
2048 | * Rebuild group relationship based on the group_desc | |
2049 | */ | |
2050 | session = container_of(ph, struct perf_session, header); | |
2051 | session->evlist->nr_groups = nr_groups; | |
2052 | ||
2053 | i = nr = 0; | |
e5cadb93 | 2054 | evlist__for_each_entry(session->evlist, evsel) { |
a8bb559b NK |
2055 | if (evsel->idx == (int) desc[i].leader_idx) { |
2056 | evsel->leader = evsel; | |
2057 | /* {anon_group} is a dummy name */ | |
210e812f | 2058 | if (strcmp(desc[i].name, "{anon_group}")) { |
a8bb559b | 2059 | evsel->group_name = desc[i].name; |
210e812f NK |
2060 | desc[i].name = NULL; |
2061 | } | |
a8bb559b NK |
2062 | evsel->nr_members = desc[i].nr_members; |
2063 | ||
2064 | if (i >= nr_groups || nr > 0) { | |
2065 | pr_debug("invalid group desc\n"); | |
2066 | goto out_free; | |
2067 | } | |
2068 | ||
2069 | leader = evsel; | |
2070 | nr = evsel->nr_members - 1; | |
2071 | i++; | |
2072 | } else if (nr) { | |
2073 | /* This is a group member */ | |
2074 | evsel->leader = leader; | |
2075 | ||
2076 | nr--; | |
2077 | } | |
2078 | } | |
2079 | ||
2080 | if (i != nr_groups || nr != 0) { | |
2081 | pr_debug("invalid group desc\n"); | |
2082 | goto out_free; | |
2083 | } | |
2084 | ||
2085 | ret = 0; | |
2086 | out_free: | |
50a2740b | 2087 | for (i = 0; i < nr_groups; i++) |
74cf249d | 2088 | zfree(&desc[i].name); |
a8bb559b NK |
2089 | free(desc); |
2090 | ||
2091 | return ret; | |
2092 | } | |
2093 | ||
99fa2984 AH |
2094 | static int process_auxtrace(struct perf_file_section *section, |
2095 | struct perf_header *ph, int fd, | |
2096 | void *data __maybe_unused) | |
2097 | { | |
2098 | struct perf_session *session; | |
2099 | int err; | |
2100 | ||
2101 | session = container_of(ph, struct perf_session, header); | |
2102 | ||
2103 | err = auxtrace_index__process(fd, section->size, session, | |
2104 | ph->needs_swap); | |
2105 | if (err < 0) | |
2106 | pr_err("Failed to process auxtrace index\n"); | |
2107 | return err; | |
2108 | } | |
2109 | ||
720e98b5 JO |
2110 | static int process_cache(struct perf_file_section *section __maybe_unused, |
2111 | struct perf_header *ph __maybe_unused, int fd __maybe_unused, | |
2112 | void *data __maybe_unused) | |
2113 | { | |
2114 | struct cpu_cache_level *caches; | |
2115 | u32 cnt, i, version; | |
2116 | ||
2117 | if (readn(fd, &version, sizeof(version)) != sizeof(version)) | |
2118 | return -1; | |
2119 | ||
2120 | if (ph->needs_swap) | |
2121 | version = bswap_32(version); | |
2122 | ||
2123 | if (version != 1) | |
2124 | return -1; | |
2125 | ||
2126 | if (readn(fd, &cnt, sizeof(cnt)) != sizeof(cnt)) | |
2127 | return -1; | |
2128 | ||
2129 | if (ph->needs_swap) | |
2130 | cnt = bswap_32(cnt); | |
2131 | ||
2132 | caches = zalloc(sizeof(*caches) * cnt); | |
2133 | if (!caches) | |
2134 | return -1; | |
2135 | ||
2136 | for (i = 0; i < cnt; i++) { | |
2137 | struct cpu_cache_level c; | |
2138 | ||
2139 | #define _R(v) \ | |
2140 | if (readn(fd, &c.v, sizeof(u32)) != sizeof(u32))\ | |
2141 | goto out_free_caches; \ | |
2142 | if (ph->needs_swap) \ | |
2143 | c.v = bswap_32(c.v); \ | |
2144 | ||
2145 | _R(level) | |
2146 | _R(line_size) | |
2147 | _R(sets) | |
2148 | _R(ways) | |
2149 | #undef _R | |
2150 | ||
2151 | #define _R(v) \ | |
2152 | c.v = do_read_string(fd, ph); \ | |
2153 | if (!c.v) \ | |
2154 | goto out_free_caches; | |
2155 | ||
2156 | _R(type) | |
2157 | _R(size) | |
2158 | _R(map) | |
2159 | #undef _R | |
2160 | ||
2161 | caches[i] = c; | |
2162 | } | |
2163 | ||
2164 | ph->env.caches = caches; | |
2165 | ph->env.caches_cnt = cnt; | |
2166 | return 0; | |
2167 | out_free_caches: | |
2168 | free(caches); | |
2169 | return -1; | |
2170 | } | |
2171 | ||
fbe96f29 SE |
2172 | struct feature_ops { |
2173 | int (*write)(int fd, struct perf_header *h, struct perf_evlist *evlist); | |
2174 | void (*print)(struct perf_header *h, int fd, FILE *fp); | |
f1c67db7 | 2175 | int (*process)(struct perf_file_section *section, |
3d7eb86b | 2176 | struct perf_header *h, int fd, void *data); |
fbe96f29 SE |
2177 | const char *name; |
2178 | bool full_only; | |
2179 | }; | |
2180 | ||
8cdfa78a RR |
2181 | #define FEAT_OPA(n, func) \ |
2182 | [n] = { .name = #n, .write = write_##func, .print = print_##func } | |
f1c67db7 RR |
2183 | #define FEAT_OPP(n, func) \ |
2184 | [n] = { .name = #n, .write = write_##func, .print = print_##func, \ | |
2185 | .process = process_##func } | |
8cdfa78a | 2186 | #define FEAT_OPF(n, func) \ |
f1c67db7 | 2187 | [n] = { .name = #n, .write = write_##func, .print = print_##func, \ |
a1ae5655 | 2188 | .process = process_##func, .full_only = true } |
8cdfa78a RR |
2189 | |
2190 | /* feature_ops not implemented: */ | |
2eeaaa09 SE |
2191 | #define print_tracing_data NULL |
2192 | #define print_build_id NULL | |
fbe96f29 SE |
2193 | |
2194 | static const struct feature_ops feat_ops[HEADER_LAST_FEATURE] = { | |
2eeaaa09 | 2195 | FEAT_OPP(HEADER_TRACING_DATA, tracing_data), |
f1c67db7 | 2196 | FEAT_OPP(HEADER_BUILD_ID, build_id), |
a1ae5655 NK |
2197 | FEAT_OPP(HEADER_HOSTNAME, hostname), |
2198 | FEAT_OPP(HEADER_OSRELEASE, osrelease), | |
2199 | FEAT_OPP(HEADER_VERSION, version), | |
2200 | FEAT_OPP(HEADER_ARCH, arch), | |
2201 | FEAT_OPP(HEADER_NRCPUS, nrcpus), | |
2202 | FEAT_OPP(HEADER_CPUDESC, cpudesc), | |
37e9d750 | 2203 | FEAT_OPP(HEADER_CPUID, cpuid), |
a1ae5655 | 2204 | FEAT_OPP(HEADER_TOTAL_MEM, total_mem), |
7c2f7afd | 2205 | FEAT_OPP(HEADER_EVENT_DESC, event_desc), |
a1ae5655 | 2206 | FEAT_OPP(HEADER_CMDLINE, cmdline), |
8cdfa78a RR |
2207 | FEAT_OPF(HEADER_CPU_TOPOLOGY, cpu_topology), |
2208 | FEAT_OPF(HEADER_NUMA_TOPOLOGY, numa_topology), | |
330aa675 | 2209 | FEAT_OPA(HEADER_BRANCH_STACK, branch_stack), |
a1ae5655 | 2210 | FEAT_OPP(HEADER_PMU_MAPPINGS, pmu_mappings), |
a8bb559b | 2211 | FEAT_OPP(HEADER_GROUP_DESC, group_desc), |
99fa2984 | 2212 | FEAT_OPP(HEADER_AUXTRACE, auxtrace), |
ffa517ad | 2213 | FEAT_OPA(HEADER_STAT, stat), |
720e98b5 | 2214 | FEAT_OPF(HEADER_CACHE, cache), |
fbe96f29 SE |
2215 | }; |
2216 | ||
2217 | struct header_print_data { | |
2218 | FILE *fp; | |
2219 | bool full; /* extended list of headers */ | |
2220 | }; | |
2221 | ||
2222 | static int perf_file_section__fprintf_info(struct perf_file_section *section, | |
2223 | struct perf_header *ph, | |
2224 | int feat, int fd, void *data) | |
2225 | { | |
2226 | struct header_print_data *hd = data; | |
2227 | ||
2228 | if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) { | |
2229 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " | |
2230 | "%d, continuing...\n", section->offset, feat); | |
2231 | return 0; | |
2232 | } | |
b1e5a9be | 2233 | if (feat >= HEADER_LAST_FEATURE) { |
fbe96f29 | 2234 | pr_warning("unknown feature %d\n", feat); |
f7a8a133 | 2235 | return 0; |
fbe96f29 SE |
2236 | } |
2237 | if (!feat_ops[feat].print) | |
2238 | return 0; | |
2239 | ||
2240 | if (!feat_ops[feat].full_only || hd->full) | |
2241 | feat_ops[feat].print(ph, fd, hd->fp); | |
2242 | else | |
2243 | fprintf(hd->fp, "# %s info available, use -I to display\n", | |
2244 | feat_ops[feat].name); | |
2245 | ||
2246 | return 0; | |
2247 | } | |
2248 | ||
2249 | int perf_header__fprintf_info(struct perf_session *session, FILE *fp, bool full) | |
2250 | { | |
2251 | struct header_print_data hd; | |
2252 | struct perf_header *header = &session->header; | |
cc9784bd | 2253 | int fd = perf_data_file__fd(session->file); |
fbe96f29 SE |
2254 | hd.fp = fp; |
2255 | hd.full = full; | |
2256 | ||
2257 | perf_header__process_sections(header, fd, &hd, | |
2258 | perf_file_section__fprintf_info); | |
2259 | return 0; | |
2260 | } | |
2261 | ||
fbe96f29 SE |
2262 | static int do_write_feat(int fd, struct perf_header *h, int type, |
2263 | struct perf_file_section **p, | |
2264 | struct perf_evlist *evlist) | |
2265 | { | |
2266 | int err; | |
2267 | int ret = 0; | |
2268 | ||
2269 | if (perf_header__has_feat(h, type)) { | |
b1e5a9be RR |
2270 | if (!feat_ops[type].write) |
2271 | return -1; | |
fbe96f29 SE |
2272 | |
2273 | (*p)->offset = lseek(fd, 0, SEEK_CUR); | |
2274 | ||
2275 | err = feat_ops[type].write(fd, h, evlist); | |
2276 | if (err < 0) { | |
2277 | pr_debug("failed to write feature %d\n", type); | |
2278 | ||
2279 | /* undo anything written */ | |
2280 | lseek(fd, (*p)->offset, SEEK_SET); | |
2281 | ||
2282 | return -1; | |
2283 | } | |
2284 | (*p)->size = lseek(fd, 0, SEEK_CUR) - (*p)->offset; | |
2285 | (*p)++; | |
2286 | } | |
2287 | return ret; | |
2288 | } | |
2289 | ||
1c0b04d1 | 2290 | static int perf_header__adds_write(struct perf_header *header, |
361c99a6 | 2291 | struct perf_evlist *evlist, int fd) |
2ba08250 | 2292 | { |
9e827dd0 | 2293 | int nr_sections; |
fbe96f29 | 2294 | struct perf_file_section *feat_sec, *p; |
9e827dd0 FW |
2295 | int sec_size; |
2296 | u64 sec_start; | |
b1e5a9be | 2297 | int feat; |
fbe96f29 | 2298 | int err; |
9e827dd0 | 2299 | |
1c0b04d1 | 2300 | nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS); |
9e827dd0 | 2301 | if (!nr_sections) |
d5eed904 | 2302 | return 0; |
9e827dd0 | 2303 | |
91b98804 | 2304 | feat_sec = p = calloc(nr_sections, sizeof(*feat_sec)); |
d5eed904 ACM |
2305 | if (feat_sec == NULL) |
2306 | return -ENOMEM; | |
9e827dd0 FW |
2307 | |
2308 | sec_size = sizeof(*feat_sec) * nr_sections; | |
2309 | ||
8d541e97 | 2310 | sec_start = header->feat_offset; |
f887f301 | 2311 | lseek(fd, sec_start + sec_size, SEEK_SET); |
2ba08250 | 2312 | |
b1e5a9be RR |
2313 | for_each_set_bit(feat, header->adds_features, HEADER_FEAT_BITS) { |
2314 | if (do_write_feat(fd, header, feat, &p, evlist)) | |
2315 | perf_header__clear_feat(header, feat); | |
2316 | } | |
9e827dd0 | 2317 | |
f887f301 | 2318 | lseek(fd, sec_start, SEEK_SET); |
fbe96f29 SE |
2319 | /* |
2320 | * may write more than needed due to dropped feature, but | |
2321 | * this is okay, reader will skip the mising entries | |
2322 | */ | |
d5eed904 ACM |
2323 | err = do_write(fd, feat_sec, sec_size); |
2324 | if (err < 0) | |
2325 | pr_debug("failed to write feature section\n"); | |
9e827dd0 | 2326 | free(feat_sec); |
d5eed904 | 2327 | return err; |
9e827dd0 | 2328 | } |
2ba08250 | 2329 | |
8dc58101 TZ |
2330 | int perf_header__write_pipe(int fd) |
2331 | { | |
2332 | struct perf_pipe_file_header f_header; | |
2333 | int err; | |
2334 | ||
2335 | f_header = (struct perf_pipe_file_header){ | |
2336 | .magic = PERF_MAGIC, | |
2337 | .size = sizeof(f_header), | |
2338 | }; | |
2339 | ||
2340 | err = do_write(fd, &f_header, sizeof(f_header)); | |
2341 | if (err < 0) { | |
2342 | pr_debug("failed to write perf pipe header\n"); | |
2343 | return err; | |
2344 | } | |
2345 | ||
2346 | return 0; | |
2347 | } | |
2348 | ||
a91e5431 ACM |
2349 | int perf_session__write_header(struct perf_session *session, |
2350 | struct perf_evlist *evlist, | |
2351 | int fd, bool at_exit) | |
7c6a1c65 PZ |
2352 | { |
2353 | struct perf_file_header f_header; | |
2354 | struct perf_file_attr f_attr; | |
1c0b04d1 | 2355 | struct perf_header *header = &session->header; |
563aecb2 | 2356 | struct perf_evsel *evsel; |
944d62ba | 2357 | u64 attr_offset; |
a91e5431 | 2358 | int err; |
7c6a1c65 PZ |
2359 | |
2360 | lseek(fd, sizeof(f_header), SEEK_SET); | |
2361 | ||
e5cadb93 | 2362 | evlist__for_each_entry(session->evlist, evsel) { |
6606f873 RR |
2363 | evsel->id_offset = lseek(fd, 0, SEEK_CUR); |
2364 | err = do_write(fd, evsel->id, evsel->ids * sizeof(u64)); | |
d5eed904 ACM |
2365 | if (err < 0) { |
2366 | pr_debug("failed to write perf header\n"); | |
2367 | return err; | |
2368 | } | |
7c6a1c65 PZ |
2369 | } |
2370 | ||
944d62ba | 2371 | attr_offset = lseek(fd, 0, SEEK_CUR); |
7c6a1c65 | 2372 | |
e5cadb93 | 2373 | evlist__for_each_entry(evlist, evsel) { |
7c6a1c65 | 2374 | f_attr = (struct perf_file_attr){ |
6606f873 | 2375 | .attr = evsel->attr, |
7c6a1c65 | 2376 | .ids = { |
6606f873 RR |
2377 | .offset = evsel->id_offset, |
2378 | .size = evsel->ids * sizeof(u64), | |
7c6a1c65 PZ |
2379 | } |
2380 | }; | |
d5eed904 ACM |
2381 | err = do_write(fd, &f_attr, sizeof(f_attr)); |
2382 | if (err < 0) { | |
2383 | pr_debug("failed to write perf header attribute\n"); | |
2384 | return err; | |
2385 | } | |
7c6a1c65 PZ |
2386 | } |
2387 | ||
d645c442 AH |
2388 | if (!header->data_offset) |
2389 | header->data_offset = lseek(fd, 0, SEEK_CUR); | |
8d541e97 | 2390 | header->feat_offset = header->data_offset + header->data_size; |
7c6a1c65 | 2391 | |
d5eed904 | 2392 | if (at_exit) { |
1c0b04d1 | 2393 | err = perf_header__adds_write(header, evlist, fd); |
d5eed904 ACM |
2394 | if (err < 0) |
2395 | return err; | |
2396 | } | |
9e827dd0 | 2397 | |
7c6a1c65 PZ |
2398 | f_header = (struct perf_file_header){ |
2399 | .magic = PERF_MAGIC, | |
2400 | .size = sizeof(f_header), | |
2401 | .attr_size = sizeof(f_attr), | |
2402 | .attrs = { | |
944d62ba | 2403 | .offset = attr_offset, |
a91e5431 | 2404 | .size = evlist->nr_entries * sizeof(f_attr), |
7c6a1c65 PZ |
2405 | }, |
2406 | .data = { | |
1c0b04d1 ACM |
2407 | .offset = header->data_offset, |
2408 | .size = header->data_size, | |
7c6a1c65 | 2409 | }, |
44b3c578 | 2410 | /* event_types is ignored, store zeros */ |
7c6a1c65 PZ |
2411 | }; |
2412 | ||
1c0b04d1 | 2413 | memcpy(&f_header.adds_features, &header->adds_features, sizeof(header->adds_features)); |
2ba08250 | 2414 | |
7c6a1c65 | 2415 | lseek(fd, 0, SEEK_SET); |
d5eed904 ACM |
2416 | err = do_write(fd, &f_header, sizeof(f_header)); |
2417 | if (err < 0) { | |
2418 | pr_debug("failed to write perf header\n"); | |
2419 | return err; | |
2420 | } | |
1c0b04d1 | 2421 | lseek(fd, header->data_offset + header->data_size, SEEK_SET); |
7c6a1c65 | 2422 | |
d5eed904 | 2423 | return 0; |
7c6a1c65 PZ |
2424 | } |
2425 | ||
1c0b04d1 | 2426 | static int perf_header__getbuffer64(struct perf_header *header, |
ba21594c ACM |
2427 | int fd, void *buf, size_t size) |
2428 | { | |
1e7972cc | 2429 | if (readn(fd, buf, size) <= 0) |
ba21594c ACM |
2430 | return -1; |
2431 | ||
1c0b04d1 | 2432 | if (header->needs_swap) |
ba21594c ACM |
2433 | mem_bswap_64(buf, size); |
2434 | ||
2435 | return 0; | |
2436 | } | |
2437 | ||
1c0b04d1 | 2438 | int perf_header__process_sections(struct perf_header *header, int fd, |
fbe96f29 | 2439 | void *data, |
1c0b04d1 | 2440 | int (*process)(struct perf_file_section *section, |
b1e5a9be RR |
2441 | struct perf_header *ph, |
2442 | int feat, int fd, void *data)) | |
2ba08250 | 2443 | { |
b1e5a9be | 2444 | struct perf_file_section *feat_sec, *sec; |
9e827dd0 FW |
2445 | int nr_sections; |
2446 | int sec_size; | |
b1e5a9be RR |
2447 | int feat; |
2448 | int err; | |
9e827dd0 | 2449 | |
1c0b04d1 | 2450 | nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS); |
9e827dd0 | 2451 | if (!nr_sections) |
37562eac | 2452 | return 0; |
9e827dd0 | 2453 | |
91b98804 | 2454 | feat_sec = sec = calloc(nr_sections, sizeof(*feat_sec)); |
9e827dd0 | 2455 | if (!feat_sec) |
37562eac | 2456 | return -1; |
9e827dd0 FW |
2457 | |
2458 | sec_size = sizeof(*feat_sec) * nr_sections; | |
2459 | ||
8d541e97 | 2460 | lseek(fd, header->feat_offset, SEEK_SET); |
9e827dd0 | 2461 | |
b1e5a9be RR |
2462 | err = perf_header__getbuffer64(header, fd, feat_sec, sec_size); |
2463 | if (err < 0) | |
769885f3 | 2464 | goto out_free; |
9e827dd0 | 2465 | |
b1e5a9be RR |
2466 | for_each_set_bit(feat, header->adds_features, HEADER_LAST_FEATURE) { |
2467 | err = process(sec++, header, feat, fd, data); | |
2468 | if (err < 0) | |
2469 | goto out_free; | |
2ba08250 | 2470 | } |
b1e5a9be | 2471 | err = 0; |
769885f3 | 2472 | out_free: |
37562eac ACM |
2473 | free(feat_sec); |
2474 | return err; | |
769885f3 | 2475 | } |
4778d2e4 | 2476 | |
114382a0 SE |
2477 | static const int attr_file_abi_sizes[] = { |
2478 | [0] = PERF_ATTR_SIZE_VER0, | |
2479 | [1] = PERF_ATTR_SIZE_VER1, | |
239cc478 | 2480 | [2] = PERF_ATTR_SIZE_VER2, |
0f6a3015 | 2481 | [3] = PERF_ATTR_SIZE_VER3, |
6a21c0b5 | 2482 | [4] = PERF_ATTR_SIZE_VER4, |
114382a0 SE |
2483 | 0, |
2484 | }; | |
2485 | ||
2486 | /* | |
2487 | * In the legacy file format, the magic number is not used to encode endianness. | |
2488 | * hdr_sz was used to encode endianness. But given that hdr_sz can vary based | |
2489 | * on ABI revisions, we need to try all combinations for all endianness to | |
2490 | * detect the endianness. | |
2491 | */ | |
2492 | static int try_all_file_abis(uint64_t hdr_sz, struct perf_header *ph) | |
73323f54 | 2493 | { |
114382a0 SE |
2494 | uint64_t ref_size, attr_size; |
2495 | int i; | |
73323f54 | 2496 | |
114382a0 SE |
2497 | for (i = 0 ; attr_file_abi_sizes[i]; i++) { |
2498 | ref_size = attr_file_abi_sizes[i] | |
2499 | + sizeof(struct perf_file_section); | |
2500 | if (hdr_sz != ref_size) { | |
2501 | attr_size = bswap_64(hdr_sz); | |
2502 | if (attr_size != ref_size) | |
2503 | continue; | |
73323f54 | 2504 | |
114382a0 SE |
2505 | ph->needs_swap = true; |
2506 | } | |
2507 | pr_debug("ABI%d perf.data file detected, need_swap=%d\n", | |
2508 | i, | |
2509 | ph->needs_swap); | |
2510 | return 0; | |
2511 | } | |
2512 | /* could not determine endianness */ | |
2513 | return -1; | |
2514 | } | |
73323f54 | 2515 | |
114382a0 SE |
2516 | #define PERF_PIPE_HDR_VER0 16 |
2517 | ||
2518 | static const size_t attr_pipe_abi_sizes[] = { | |
2519 | [0] = PERF_PIPE_HDR_VER0, | |
2520 | 0, | |
2521 | }; | |
2522 | ||
2523 | /* | |
2524 | * In the legacy pipe format, there is an implicit assumption that endiannesss | |
2525 | * between host recording the samples, and host parsing the samples is the | |
2526 | * same. This is not always the case given that the pipe output may always be | |
2527 | * redirected into a file and analyzed on a different machine with possibly a | |
2528 | * different endianness and perf_event ABI revsions in the perf tool itself. | |
2529 | */ | |
2530 | static int try_all_pipe_abis(uint64_t hdr_sz, struct perf_header *ph) | |
2531 | { | |
2532 | u64 attr_size; | |
2533 | int i; | |
2534 | ||
2535 | for (i = 0 ; attr_pipe_abi_sizes[i]; i++) { | |
2536 | if (hdr_sz != attr_pipe_abi_sizes[i]) { | |
2537 | attr_size = bswap_64(hdr_sz); | |
2538 | if (attr_size != hdr_sz) | |
2539 | continue; | |
73323f54 SE |
2540 | |
2541 | ph->needs_swap = true; | |
2542 | } | |
114382a0 | 2543 | pr_debug("Pipe ABI%d perf.data file detected\n", i); |
73323f54 SE |
2544 | return 0; |
2545 | } | |
114382a0 SE |
2546 | return -1; |
2547 | } | |
2548 | ||
e84ba4e2 FT |
2549 | bool is_perf_magic(u64 magic) |
2550 | { | |
2551 | if (!memcmp(&magic, __perf_magic1, sizeof(magic)) | |
2552 | || magic == __perf_magic2 | |
2553 | || magic == __perf_magic2_sw) | |
2554 | return true; | |
2555 | ||
2556 | return false; | |
2557 | } | |
2558 | ||
114382a0 SE |
2559 | static int check_magic_endian(u64 magic, uint64_t hdr_sz, |
2560 | bool is_pipe, struct perf_header *ph) | |
2561 | { | |
2562 | int ret; | |
2563 | ||
2564 | /* check for legacy format */ | |
2565 | ret = memcmp(&magic, __perf_magic1, sizeof(magic)); | |
2566 | if (ret == 0) { | |
2a08c3ec | 2567 | ph->version = PERF_HEADER_VERSION_1; |
114382a0 SE |
2568 | pr_debug("legacy perf.data format\n"); |
2569 | if (is_pipe) | |
2570 | return try_all_pipe_abis(hdr_sz, ph); | |
2571 | ||
2572 | return try_all_file_abis(hdr_sz, ph); | |
2573 | } | |
2574 | /* | |
2575 | * the new magic number serves two purposes: | |
2576 | * - unique number to identify actual perf.data files | |
2577 | * - encode endianness of file | |
2578 | */ | |
f7913971 | 2579 | ph->version = PERF_HEADER_VERSION_2; |
73323f54 | 2580 | |
114382a0 SE |
2581 | /* check magic number with one endianness */ |
2582 | if (magic == __perf_magic2) | |
73323f54 SE |
2583 | return 0; |
2584 | ||
114382a0 SE |
2585 | /* check magic number with opposite endianness */ |
2586 | if (magic != __perf_magic2_sw) | |
73323f54 SE |
2587 | return -1; |
2588 | ||
2589 | ph->needs_swap = true; | |
2590 | ||
2591 | return 0; | |
2592 | } | |
2593 | ||
1c0b04d1 | 2594 | int perf_file_header__read(struct perf_file_header *header, |
37562eac ACM |
2595 | struct perf_header *ph, int fd) |
2596 | { | |
727ebd54 | 2597 | ssize_t ret; |
73323f54 | 2598 | |
37562eac | 2599 | lseek(fd, 0, SEEK_SET); |
37562eac | 2600 | |
73323f54 SE |
2601 | ret = readn(fd, header, sizeof(*header)); |
2602 | if (ret <= 0) | |
37562eac ACM |
2603 | return -1; |
2604 | ||
114382a0 SE |
2605 | if (check_magic_endian(header->magic, |
2606 | header->attr_size, false, ph) < 0) { | |
2607 | pr_debug("magic/endian check failed\n"); | |
73323f54 | 2608 | return -1; |
114382a0 | 2609 | } |
ba21594c | 2610 | |
73323f54 | 2611 | if (ph->needs_swap) { |
1c0b04d1 | 2612 | mem_bswap_64(header, offsetof(struct perf_file_header, |
73323f54 | 2613 | adds_features)); |
ba21594c ACM |
2614 | } |
2615 | ||
1c0b04d1 | 2616 | if (header->size != sizeof(*header)) { |
37562eac | 2617 | /* Support the previous format */ |
1c0b04d1 ACM |
2618 | if (header->size == offsetof(typeof(*header), adds_features)) |
2619 | bitmap_zero(header->adds_features, HEADER_FEAT_BITS); | |
37562eac ACM |
2620 | else |
2621 | return -1; | |
d327fa43 | 2622 | } else if (ph->needs_swap) { |
d327fa43 DA |
2623 | /* |
2624 | * feature bitmap is declared as an array of unsigned longs -- | |
2625 | * not good since its size can differ between the host that | |
2626 | * generated the data file and the host analyzing the file. | |
2627 | * | |
2628 | * We need to handle endianness, but we don't know the size of | |
2629 | * the unsigned long where the file was generated. Take a best | |
2630 | * guess at determining it: try 64-bit swap first (ie., file | |
2631 | * created on a 64-bit host), and check if the hostname feature | |
2632 | * bit is set (this feature bit is forced on as of fbe96f2). | |
2633 | * If the bit is not, undo the 64-bit swap and try a 32-bit | |
2634 | * swap. If the hostname bit is still not set (e.g., older data | |
2635 | * file), punt and fallback to the original behavior -- | |
2636 | * clearing all feature bits and setting buildid. | |
2637 | */ | |
80c0120a DA |
2638 | mem_bswap_64(&header->adds_features, |
2639 | BITS_TO_U64(HEADER_FEAT_BITS)); | |
d327fa43 DA |
2640 | |
2641 | if (!test_bit(HEADER_HOSTNAME, header->adds_features)) { | |
80c0120a DA |
2642 | /* unswap as u64 */ |
2643 | mem_bswap_64(&header->adds_features, | |
2644 | BITS_TO_U64(HEADER_FEAT_BITS)); | |
2645 | ||
2646 | /* unswap as u32 */ | |
2647 | mem_bswap_32(&header->adds_features, | |
2648 | BITS_TO_U32(HEADER_FEAT_BITS)); | |
d327fa43 DA |
2649 | } |
2650 | ||
2651 | if (!test_bit(HEADER_HOSTNAME, header->adds_features)) { | |
2652 | bitmap_zero(header->adds_features, HEADER_FEAT_BITS); | |
2653 | set_bit(HEADER_BUILD_ID, header->adds_features); | |
2654 | } | |
4778d2e4 | 2655 | } |
9e827dd0 | 2656 | |
1c0b04d1 | 2657 | memcpy(&ph->adds_features, &header->adds_features, |
ba21594c | 2658 | sizeof(ph->adds_features)); |
37562eac | 2659 | |
1c0b04d1 ACM |
2660 | ph->data_offset = header->data.offset; |
2661 | ph->data_size = header->data.size; | |
8d541e97 | 2662 | ph->feat_offset = header->data.offset + header->data.size; |
37562eac ACM |
2663 | return 0; |
2664 | } | |
2665 | ||
1c0b04d1 | 2666 | static int perf_file_section__process(struct perf_file_section *section, |
ba21594c | 2667 | struct perf_header *ph, |
da378962 | 2668 | int feat, int fd, void *data) |
37562eac | 2669 | { |
1c0b04d1 | 2670 | if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) { |
9486aa38 | 2671 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " |
1c0b04d1 | 2672 | "%d, continuing...\n", section->offset, feat); |
37562eac ACM |
2673 | return 0; |
2674 | } | |
2675 | ||
b1e5a9be RR |
2676 | if (feat >= HEADER_LAST_FEATURE) { |
2677 | pr_debug("unknown feature %d, continuing...\n", feat); | |
2678 | return 0; | |
2679 | } | |
2680 | ||
f1c67db7 RR |
2681 | if (!feat_ops[feat].process) |
2682 | return 0; | |
37562eac | 2683 | |
3d7eb86b | 2684 | return feat_ops[feat].process(section, ph, fd, data); |
37562eac | 2685 | } |
2ba08250 | 2686 | |
1c0b04d1 | 2687 | static int perf_file_header__read_pipe(struct perf_pipe_file_header *header, |
454c407e TZ |
2688 | struct perf_header *ph, int fd, |
2689 | bool repipe) | |
7c6a1c65 | 2690 | { |
727ebd54 | 2691 | ssize_t ret; |
73323f54 SE |
2692 | |
2693 | ret = readn(fd, header, sizeof(*header)); | |
2694 | if (ret <= 0) | |
2695 | return -1; | |
2696 | ||
114382a0 SE |
2697 | if (check_magic_endian(header->magic, header->size, true, ph) < 0) { |
2698 | pr_debug("endian/magic failed\n"); | |
8dc58101 | 2699 | return -1; |
114382a0 SE |
2700 | } |
2701 | ||
2702 | if (ph->needs_swap) | |
2703 | header->size = bswap_64(header->size); | |
8dc58101 | 2704 | |
1c0b04d1 | 2705 | if (repipe && do_write(STDOUT_FILENO, header, sizeof(*header)) < 0) |
454c407e TZ |
2706 | return -1; |
2707 | ||
8dc58101 TZ |
2708 | return 0; |
2709 | } | |
2710 | ||
d4339569 | 2711 | static int perf_header__read_pipe(struct perf_session *session) |
8dc58101 | 2712 | { |
1c0b04d1 | 2713 | struct perf_header *header = &session->header; |
8dc58101 TZ |
2714 | struct perf_pipe_file_header f_header; |
2715 | ||
cc9784bd JO |
2716 | if (perf_file_header__read_pipe(&f_header, header, |
2717 | perf_data_file__fd(session->file), | |
454c407e | 2718 | session->repipe) < 0) { |
8dc58101 TZ |
2719 | pr_debug("incompatible file format\n"); |
2720 | return -EINVAL; | |
2721 | } | |
2722 | ||
8dc58101 TZ |
2723 | return 0; |
2724 | } | |
2725 | ||
69996df4 SE |
2726 | static int read_attr(int fd, struct perf_header *ph, |
2727 | struct perf_file_attr *f_attr) | |
2728 | { | |
2729 | struct perf_event_attr *attr = &f_attr->attr; | |
2730 | size_t sz, left; | |
2731 | size_t our_sz = sizeof(f_attr->attr); | |
727ebd54 | 2732 | ssize_t ret; |
69996df4 SE |
2733 | |
2734 | memset(f_attr, 0, sizeof(*f_attr)); | |
2735 | ||
2736 | /* read minimal guaranteed structure */ | |
2737 | ret = readn(fd, attr, PERF_ATTR_SIZE_VER0); | |
2738 | if (ret <= 0) { | |
2739 | pr_debug("cannot read %d bytes of header attr\n", | |
2740 | PERF_ATTR_SIZE_VER0); | |
2741 | return -1; | |
2742 | } | |
2743 | ||
2744 | /* on file perf_event_attr size */ | |
2745 | sz = attr->size; | |
114382a0 | 2746 | |
69996df4 SE |
2747 | if (ph->needs_swap) |
2748 | sz = bswap_32(sz); | |
2749 | ||
2750 | if (sz == 0) { | |
2751 | /* assume ABI0 */ | |
2752 | sz = PERF_ATTR_SIZE_VER0; | |
2753 | } else if (sz > our_sz) { | |
2754 | pr_debug("file uses a more recent and unsupported ABI" | |
2755 | " (%zu bytes extra)\n", sz - our_sz); | |
2756 | return -1; | |
2757 | } | |
2758 | /* what we have not yet read and that we know about */ | |
2759 | left = sz - PERF_ATTR_SIZE_VER0; | |
2760 | if (left) { | |
2761 | void *ptr = attr; | |
2762 | ptr += PERF_ATTR_SIZE_VER0; | |
2763 | ||
2764 | ret = readn(fd, ptr, left); | |
2765 | } | |
2766 | /* read perf_file_section, ids are read in caller */ | |
2767 | ret = readn(fd, &f_attr->ids, sizeof(f_attr->ids)); | |
2768 | ||
2769 | return ret <= 0 ? -1 : 0; | |
2770 | } | |
2771 | ||
831394bd NK |
2772 | static int perf_evsel__prepare_tracepoint_event(struct perf_evsel *evsel, |
2773 | struct pevent *pevent) | |
cb9dd49e | 2774 | { |
831394bd | 2775 | struct event_format *event; |
cb9dd49e ACM |
2776 | char bf[128]; |
2777 | ||
831394bd NK |
2778 | /* already prepared */ |
2779 | if (evsel->tp_format) | |
2780 | return 0; | |
2781 | ||
3dce2ce3 NK |
2782 | if (pevent == NULL) { |
2783 | pr_debug("broken or missing trace data\n"); | |
2784 | return -1; | |
2785 | } | |
2786 | ||
831394bd | 2787 | event = pevent_find_event(pevent, evsel->attr.config); |
cb9dd49e ACM |
2788 | if (event == NULL) |
2789 | return -1; | |
2790 | ||
831394bd NK |
2791 | if (!evsel->name) { |
2792 | snprintf(bf, sizeof(bf), "%s:%s", event->system, event->name); | |
2793 | evsel->name = strdup(bf); | |
2794 | if (evsel->name == NULL) | |
2795 | return -1; | |
2796 | } | |
cb9dd49e | 2797 | |
fcf65bf1 | 2798 | evsel->tp_format = event; |
cb9dd49e ACM |
2799 | return 0; |
2800 | } | |
2801 | ||
831394bd NK |
2802 | static int perf_evlist__prepare_tracepoint_events(struct perf_evlist *evlist, |
2803 | struct pevent *pevent) | |
cb9dd49e ACM |
2804 | { |
2805 | struct perf_evsel *pos; | |
2806 | ||
e5cadb93 | 2807 | evlist__for_each_entry(evlist, pos) { |
831394bd NK |
2808 | if (pos->attr.type == PERF_TYPE_TRACEPOINT && |
2809 | perf_evsel__prepare_tracepoint_event(pos, pevent)) | |
cb9dd49e ACM |
2810 | return -1; |
2811 | } | |
2812 | ||
2813 | return 0; | |
2814 | } | |
2815 | ||
d4339569 | 2816 | int perf_session__read_header(struct perf_session *session) |
8dc58101 | 2817 | { |
cc9784bd | 2818 | struct perf_data_file *file = session->file; |
1c0b04d1 | 2819 | struct perf_header *header = &session->header; |
ba21594c | 2820 | struct perf_file_header f_header; |
7c6a1c65 PZ |
2821 | struct perf_file_attr f_attr; |
2822 | u64 f_id; | |
7c6a1c65 | 2823 | int nr_attrs, nr_ids, i, j; |
cc9784bd | 2824 | int fd = perf_data_file__fd(file); |
7c6a1c65 | 2825 | |
334fe7a3 | 2826 | session->evlist = perf_evlist__new(); |
a91e5431 ACM |
2827 | if (session->evlist == NULL) |
2828 | return -ENOMEM; | |
2829 | ||
2c07144d | 2830 | session->evlist->env = &header->env; |
4cde998d | 2831 | session->machines.host.env = &header->env; |
cc9784bd | 2832 | if (perf_data_file__is_pipe(file)) |
d4339569 | 2833 | return perf_header__read_pipe(session); |
8dc58101 | 2834 | |
69996df4 | 2835 | if (perf_file_header__read(&f_header, header, fd) < 0) |
4dc0a04b | 2836 | return -EINVAL; |
7c6a1c65 | 2837 | |
b314e5cf NK |
2838 | /* |
2839 | * Sanity check that perf.data was written cleanly; data size is | |
2840 | * initialized to 0 and updated only if the on_exit function is run. | |
2841 | * If data size is still 0 then the file contains only partial | |
2842 | * information. Just warn user and process it as much as it can. | |
2843 | */ | |
2844 | if (f_header.data.size == 0) { | |
2845 | pr_warning("WARNING: The %s file's data size field is 0 which is unexpected.\n" | |
2846 | "Was the 'perf record' command properly terminated?\n", | |
cc9784bd | 2847 | file->path); |
b314e5cf NK |
2848 | } |
2849 | ||
69996df4 | 2850 | nr_attrs = f_header.attrs.size / f_header.attr_size; |
7c6a1c65 PZ |
2851 | lseek(fd, f_header.attrs.offset, SEEK_SET); |
2852 | ||
2853 | for (i = 0; i < nr_attrs; i++) { | |
a91e5431 | 2854 | struct perf_evsel *evsel; |
1c222bce | 2855 | off_t tmp; |
7c6a1c65 | 2856 | |
69996df4 | 2857 | if (read_attr(fd, header, &f_attr) < 0) |
769885f3 | 2858 | goto out_errno; |
ba21594c | 2859 | |
1060ab85 DA |
2860 | if (header->needs_swap) { |
2861 | f_attr.ids.size = bswap_64(f_attr.ids.size); | |
2862 | f_attr.ids.offset = bswap_64(f_attr.ids.offset); | |
eda3913b | 2863 | perf_event__attr_swap(&f_attr.attr); |
1060ab85 | 2864 | } |
eda3913b | 2865 | |
1c222bce | 2866 | tmp = lseek(fd, 0, SEEK_CUR); |
ef503831 | 2867 | evsel = perf_evsel__new(&f_attr.attr); |
7c6a1c65 | 2868 | |
a91e5431 ACM |
2869 | if (evsel == NULL) |
2870 | goto out_delete_evlist; | |
0807d2d8 ACM |
2871 | |
2872 | evsel->needs_swap = header->needs_swap; | |
a91e5431 ACM |
2873 | /* |
2874 | * Do it before so that if perf_evsel__alloc_id fails, this | |
2875 | * entry gets purged too at perf_evlist__delete(). | |
2876 | */ | |
2877 | perf_evlist__add(session->evlist, evsel); | |
7c6a1c65 PZ |
2878 | |
2879 | nr_ids = f_attr.ids.size / sizeof(u64); | |
a91e5431 ACM |
2880 | /* |
2881 | * We don't have the cpu and thread maps on the header, so | |
2882 | * for allocating the perf_sample_id table we fake 1 cpu and | |
2883 | * hattr->ids threads. | |
2884 | */ | |
2885 | if (perf_evsel__alloc_id(evsel, 1, nr_ids)) | |
2886 | goto out_delete_evlist; | |
2887 | ||
7c6a1c65 PZ |
2888 | lseek(fd, f_attr.ids.offset, SEEK_SET); |
2889 | ||
2890 | for (j = 0; j < nr_ids; j++) { | |
1c0b04d1 | 2891 | if (perf_header__getbuffer64(header, fd, &f_id, sizeof(f_id))) |
769885f3 | 2892 | goto out_errno; |
7c6a1c65 | 2893 | |
a91e5431 | 2894 | perf_evlist__id_add(session->evlist, evsel, 0, j, f_id); |
7c6a1c65 | 2895 | } |
11deb1f9 | 2896 | |
7c6a1c65 PZ |
2897 | lseek(fd, tmp, SEEK_SET); |
2898 | } | |
2899 | ||
d04b35f8 ACM |
2900 | symbol_conf.nr_events = nr_attrs; |
2901 | ||
29f5ffd3 | 2902 | perf_header__process_sections(header, fd, &session->tevent, |
fbe96f29 | 2903 | perf_file_section__process); |
4778d2e4 | 2904 | |
831394bd | 2905 | if (perf_evlist__prepare_tracepoint_events(session->evlist, |
29f5ffd3 | 2906 | session->tevent.pevent)) |
cb9dd49e ACM |
2907 | goto out_delete_evlist; |
2908 | ||
4dc0a04b | 2909 | return 0; |
769885f3 ACM |
2910 | out_errno: |
2911 | return -errno; | |
a91e5431 ACM |
2912 | |
2913 | out_delete_evlist: | |
2914 | perf_evlist__delete(session->evlist); | |
2915 | session->evlist = NULL; | |
2916 | return -ENOMEM; | |
7c6a1c65 | 2917 | } |
0d3a5c88 | 2918 | |
45694aa7 | 2919 | int perf_event__synthesize_attr(struct perf_tool *tool, |
f4d83436 | 2920 | struct perf_event_attr *attr, u32 ids, u64 *id, |
743eb868 | 2921 | perf_event__handler_t process) |
2c46dbb5 | 2922 | { |
8115d60c | 2923 | union perf_event *ev; |
2c46dbb5 TZ |
2924 | size_t size; |
2925 | int err; | |
2926 | ||
2927 | size = sizeof(struct perf_event_attr); | |
9ac3e487 | 2928 | size = PERF_ALIGN(size, sizeof(u64)); |
2c46dbb5 TZ |
2929 | size += sizeof(struct perf_event_header); |
2930 | size += ids * sizeof(u64); | |
2931 | ||
2932 | ev = malloc(size); | |
2933 | ||
ce47dc56 CS |
2934 | if (ev == NULL) |
2935 | return -ENOMEM; | |
2936 | ||
2c46dbb5 TZ |
2937 | ev->attr.attr = *attr; |
2938 | memcpy(ev->attr.id, id, ids * sizeof(u64)); | |
2939 | ||
2940 | ev->attr.header.type = PERF_RECORD_HEADER_ATTR; | |
f4d83436 | 2941 | ev->attr.header.size = (u16)size; |
2c46dbb5 | 2942 | |
f4d83436 RR |
2943 | if (ev->attr.header.size == size) |
2944 | err = process(tool, ev, NULL, NULL); | |
2945 | else | |
2946 | err = -E2BIG; | |
2c46dbb5 TZ |
2947 | |
2948 | free(ev); | |
2949 | ||
2950 | return err; | |
2951 | } | |
2952 | ||
a6e52817 JO |
2953 | static struct event_update_event * |
2954 | event_update_event__new(size_t size, u64 type, u64 id) | |
2955 | { | |
2956 | struct event_update_event *ev; | |
2957 | ||
2958 | size += sizeof(*ev); | |
2959 | size = PERF_ALIGN(size, sizeof(u64)); | |
2960 | ||
2961 | ev = zalloc(size); | |
2962 | if (ev) { | |
2963 | ev->header.type = PERF_RECORD_EVENT_UPDATE; | |
2964 | ev->header.size = (u16)size; | |
2965 | ev->type = type; | |
2966 | ev->id = id; | |
2967 | } | |
2968 | return ev; | |
2969 | } | |
2970 | ||
2971 | int | |
2972 | perf_event__synthesize_event_update_unit(struct perf_tool *tool, | |
2973 | struct perf_evsel *evsel, | |
2974 | perf_event__handler_t process) | |
2975 | { | |
2976 | struct event_update_event *ev; | |
2977 | size_t size = strlen(evsel->unit); | |
2978 | int err; | |
2979 | ||
2980 | ev = event_update_event__new(size + 1, PERF_EVENT_UPDATE__UNIT, evsel->id[0]); | |
2981 | if (ev == NULL) | |
2982 | return -ENOMEM; | |
2983 | ||
2984 | strncpy(ev->data, evsel->unit, size); | |
2985 | err = process(tool, (union perf_event *)ev, NULL, NULL); | |
2986 | free(ev); | |
2987 | return err; | |
2988 | } | |
2989 | ||
daeecbc0 JO |
2990 | int |
2991 | perf_event__synthesize_event_update_scale(struct perf_tool *tool, | |
2992 | struct perf_evsel *evsel, | |
2993 | perf_event__handler_t process) | |
2994 | { | |
2995 | struct event_update_event *ev; | |
2996 | struct event_update_event_scale *ev_data; | |
2997 | int err; | |
2998 | ||
2999 | ev = event_update_event__new(sizeof(*ev_data), PERF_EVENT_UPDATE__SCALE, evsel->id[0]); | |
3000 | if (ev == NULL) | |
3001 | return -ENOMEM; | |
3002 | ||
3003 | ev_data = (struct event_update_event_scale *) ev->data; | |
3004 | ev_data->scale = evsel->scale; | |
3005 | err = process(tool, (union perf_event*) ev, NULL, NULL); | |
3006 | free(ev); | |
3007 | return err; | |
3008 | } | |
3009 | ||
802c9048 JO |
3010 | int |
3011 | perf_event__synthesize_event_update_name(struct perf_tool *tool, | |
3012 | struct perf_evsel *evsel, | |
3013 | perf_event__handler_t process) | |
3014 | { | |
3015 | struct event_update_event *ev; | |
3016 | size_t len = strlen(evsel->name); | |
3017 | int err; | |
3018 | ||
3019 | ev = event_update_event__new(len + 1, PERF_EVENT_UPDATE__NAME, evsel->id[0]); | |
3020 | if (ev == NULL) | |
3021 | return -ENOMEM; | |
3022 | ||
3023 | strncpy(ev->data, evsel->name, len); | |
3024 | err = process(tool, (union perf_event*) ev, NULL, NULL); | |
3025 | free(ev); | |
3026 | return err; | |
3027 | } | |
daeecbc0 | 3028 | |
86ebb09f JO |
3029 | int |
3030 | perf_event__synthesize_event_update_cpus(struct perf_tool *tool, | |
3031 | struct perf_evsel *evsel, | |
3032 | perf_event__handler_t process) | |
3033 | { | |
3034 | size_t size = sizeof(struct event_update_event); | |
3035 | struct event_update_event *ev; | |
3036 | int max, err; | |
3037 | u16 type; | |
3038 | ||
3039 | if (!evsel->own_cpus) | |
3040 | return 0; | |
3041 | ||
3042 | ev = cpu_map_data__alloc(evsel->own_cpus, &size, &type, &max); | |
3043 | if (!ev) | |
3044 | return -ENOMEM; | |
3045 | ||
3046 | ev->header.type = PERF_RECORD_EVENT_UPDATE; | |
3047 | ev->header.size = (u16)size; | |
3048 | ev->type = PERF_EVENT_UPDATE__CPUS; | |
3049 | ev->id = evsel->id[0]; | |
3050 | ||
3051 | cpu_map_data__synthesize((struct cpu_map_data *) ev->data, | |
3052 | evsel->own_cpus, | |
3053 | type, max); | |
3054 | ||
3055 | err = process(tool, (union perf_event*) ev, NULL, NULL); | |
3056 | free(ev); | |
3057 | return err; | |
3058 | } | |
3059 | ||
c853f939 JO |
3060 | size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp) |
3061 | { | |
3062 | struct event_update_event *ev = &event->event_update; | |
3063 | struct event_update_event_scale *ev_scale; | |
3064 | struct event_update_event_cpus *ev_cpus; | |
3065 | struct cpu_map *map; | |
3066 | size_t ret; | |
3067 | ||
3068 | ret = fprintf(fp, "\n... id: %" PRIu64 "\n", ev->id); | |
3069 | ||
3070 | switch (ev->type) { | |
3071 | case PERF_EVENT_UPDATE__SCALE: | |
3072 | ev_scale = (struct event_update_event_scale *) ev->data; | |
3073 | ret += fprintf(fp, "... scale: %f\n", ev_scale->scale); | |
3074 | break; | |
3075 | case PERF_EVENT_UPDATE__UNIT: | |
3076 | ret += fprintf(fp, "... unit: %s\n", ev->data); | |
3077 | break; | |
3078 | case PERF_EVENT_UPDATE__NAME: | |
3079 | ret += fprintf(fp, "... name: %s\n", ev->data); | |
3080 | break; | |
3081 | case PERF_EVENT_UPDATE__CPUS: | |
3082 | ev_cpus = (struct event_update_event_cpus *) ev->data; | |
3083 | ret += fprintf(fp, "... "); | |
3084 | ||
3085 | map = cpu_map__new_data(&ev_cpus->cpus); | |
3086 | if (map) | |
3087 | ret += cpu_map__fprintf(map, fp); | |
3088 | else | |
3089 | ret += fprintf(fp, "failed to get cpus\n"); | |
3090 | break; | |
3091 | default: | |
3092 | ret += fprintf(fp, "... unknown type\n"); | |
3093 | break; | |
3094 | } | |
3095 | ||
3096 | return ret; | |
3097 | } | |
86ebb09f | 3098 | |
45694aa7 | 3099 | int perf_event__synthesize_attrs(struct perf_tool *tool, |
d20deb64 | 3100 | struct perf_session *session, |
a91e5431 | 3101 | perf_event__handler_t process) |
2c46dbb5 | 3102 | { |
6606f873 | 3103 | struct perf_evsel *evsel; |
a91e5431 | 3104 | int err = 0; |
2c46dbb5 | 3105 | |
e5cadb93 | 3106 | evlist__for_each_entry(session->evlist, evsel) { |
6606f873 RR |
3107 | err = perf_event__synthesize_attr(tool, &evsel->attr, evsel->ids, |
3108 | evsel->id, process); | |
2c46dbb5 TZ |
3109 | if (err) { |
3110 | pr_debug("failed to create perf header attribute\n"); | |
3111 | return err; | |
3112 | } | |
3113 | } | |
3114 | ||
3115 | return err; | |
3116 | } | |
3117 | ||
47c3d109 AH |
3118 | int perf_event__process_attr(struct perf_tool *tool __maybe_unused, |
3119 | union perf_event *event, | |
10d0f086 | 3120 | struct perf_evlist **pevlist) |
2c46dbb5 | 3121 | { |
f4d83436 | 3122 | u32 i, ids, n_ids; |
a91e5431 | 3123 | struct perf_evsel *evsel; |
10d0f086 | 3124 | struct perf_evlist *evlist = *pevlist; |
2c46dbb5 | 3125 | |
10d0f086 | 3126 | if (evlist == NULL) { |
334fe7a3 | 3127 | *pevlist = evlist = perf_evlist__new(); |
10d0f086 | 3128 | if (evlist == NULL) |
a91e5431 ACM |
3129 | return -ENOMEM; |
3130 | } | |
3131 | ||
ef503831 | 3132 | evsel = perf_evsel__new(&event->attr.attr); |
a91e5431 | 3133 | if (evsel == NULL) |
2c46dbb5 TZ |
3134 | return -ENOMEM; |
3135 | ||
10d0f086 | 3136 | perf_evlist__add(evlist, evsel); |
a91e5431 | 3137 | |
8115d60c ACM |
3138 | ids = event->header.size; |
3139 | ids -= (void *)&event->attr.id - (void *)event; | |
2c46dbb5 | 3140 | n_ids = ids / sizeof(u64); |
a91e5431 ACM |
3141 | /* |
3142 | * We don't have the cpu and thread maps on the header, so | |
3143 | * for allocating the perf_sample_id table we fake 1 cpu and | |
3144 | * hattr->ids threads. | |
3145 | */ | |
3146 | if (perf_evsel__alloc_id(evsel, 1, n_ids)) | |
3147 | return -ENOMEM; | |
2c46dbb5 TZ |
3148 | |
3149 | for (i = 0; i < n_ids; i++) { | |
10d0f086 | 3150 | perf_evlist__id_add(evlist, evsel, 0, i, event->attr.id[i]); |
2c46dbb5 TZ |
3151 | } |
3152 | ||
7e0d6fc9 AH |
3153 | symbol_conf.nr_events = evlist->nr_entries; |
3154 | ||
2c46dbb5 TZ |
3155 | return 0; |
3156 | } | |
cd19a035 | 3157 | |
ffe77725 JO |
3158 | int perf_event__process_event_update(struct perf_tool *tool __maybe_unused, |
3159 | union perf_event *event, | |
3160 | struct perf_evlist **pevlist) | |
3161 | { | |
3162 | struct event_update_event *ev = &event->event_update; | |
daeecbc0 | 3163 | struct event_update_event_scale *ev_scale; |
86ebb09f | 3164 | struct event_update_event_cpus *ev_cpus; |
ffe77725 JO |
3165 | struct perf_evlist *evlist; |
3166 | struct perf_evsel *evsel; | |
86ebb09f | 3167 | struct cpu_map *map; |
ffe77725 JO |
3168 | |
3169 | if (!pevlist || *pevlist == NULL) | |
3170 | return -EINVAL; | |
3171 | ||
3172 | evlist = *pevlist; | |
3173 | ||
3174 | evsel = perf_evlist__id2evsel(evlist, ev->id); | |
3175 | if (evsel == NULL) | |
3176 | return -EINVAL; | |
3177 | ||
a6e52817 JO |
3178 | switch (ev->type) { |
3179 | case PERF_EVENT_UPDATE__UNIT: | |
3180 | evsel->unit = strdup(ev->data); | |
daeecbc0 | 3181 | break; |
802c9048 JO |
3182 | case PERF_EVENT_UPDATE__NAME: |
3183 | evsel->name = strdup(ev->data); | |
3184 | break; | |
daeecbc0 JO |
3185 | case PERF_EVENT_UPDATE__SCALE: |
3186 | ev_scale = (struct event_update_event_scale *) ev->data; | |
3187 | evsel->scale = ev_scale->scale; | |
86ebb09f JO |
3188 | case PERF_EVENT_UPDATE__CPUS: |
3189 | ev_cpus = (struct event_update_event_cpus *) ev->data; | |
3190 | ||
3191 | map = cpu_map__new_data(&ev_cpus->cpus); | |
3192 | if (map) | |
3193 | evsel->own_cpus = map; | |
3194 | else | |
3195 | pr_err("failed to get event_update cpus\n"); | |
a6e52817 JO |
3196 | default: |
3197 | break; | |
3198 | } | |
3199 | ||
ffe77725 JO |
3200 | return 0; |
3201 | } | |
3202 | ||
45694aa7 | 3203 | int perf_event__synthesize_tracing_data(struct perf_tool *tool, int fd, |
d20deb64 | 3204 | struct perf_evlist *evlist, |
743eb868 | 3205 | perf_event__handler_t process) |
9215545e | 3206 | { |
8115d60c | 3207 | union perf_event ev; |
29208e57 | 3208 | struct tracing_data *tdata; |
9215545e | 3209 | ssize_t size = 0, aligned_size = 0, padding; |
1d037ca1 | 3210 | int err __maybe_unused = 0; |
9215545e | 3211 | |
29208e57 JO |
3212 | /* |
3213 | * We are going to store the size of the data followed | |
3214 | * by the data contents. Since the fd descriptor is a pipe, | |
3215 | * we cannot seek back to store the size of the data once | |
3216 | * we know it. Instead we: | |
3217 | * | |
3218 | * - write the tracing data to the temp file | |
3219 | * - get/write the data size to pipe | |
3220 | * - write the tracing data from the temp file | |
3221 | * to the pipe | |
3222 | */ | |
3223 | tdata = tracing_data_get(&evlist->entries, fd, true); | |
3224 | if (!tdata) | |
3225 | return -1; | |
3226 | ||
9215545e TZ |
3227 | memset(&ev, 0, sizeof(ev)); |
3228 | ||
3229 | ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA; | |
29208e57 | 3230 | size = tdata->size; |
9ac3e487 | 3231 | aligned_size = PERF_ALIGN(size, sizeof(u64)); |
9215545e TZ |
3232 | padding = aligned_size - size; |
3233 | ev.tracing_data.header.size = sizeof(ev.tracing_data); | |
3234 | ev.tracing_data.size = aligned_size; | |
3235 | ||
45694aa7 | 3236 | process(tool, &ev, NULL, NULL); |
9215545e | 3237 | |
29208e57 JO |
3238 | /* |
3239 | * The put function will copy all the tracing data | |
3240 | * stored in temp file to the pipe. | |
3241 | */ | |
3242 | tracing_data_put(tdata); | |
3243 | ||
9215545e TZ |
3244 | write_padded(fd, NULL, 0, padding); |
3245 | ||
3246 | return aligned_size; | |
3247 | } | |
3248 | ||
47c3d109 AH |
3249 | int perf_event__process_tracing_data(struct perf_tool *tool __maybe_unused, |
3250 | union perf_event *event, | |
8115d60c | 3251 | struct perf_session *session) |
9215545e | 3252 | { |
8115d60c | 3253 | ssize_t size_read, padding, size = event->tracing_data.size; |
cc9784bd JO |
3254 | int fd = perf_data_file__fd(session->file); |
3255 | off_t offset = lseek(fd, 0, SEEK_CUR); | |
9215545e TZ |
3256 | char buf[BUFSIZ]; |
3257 | ||
3258 | /* setup for reading amidst mmap */ | |
cc9784bd | 3259 | lseek(fd, offset + sizeof(struct tracing_data_event), |
9215545e TZ |
3260 | SEEK_SET); |
3261 | ||
29f5ffd3 | 3262 | size_read = trace_report(fd, &session->tevent, |
da378962 | 3263 | session->repipe); |
9ac3e487 | 3264 | padding = PERF_ALIGN(size_read, sizeof(u64)) - size_read; |
9215545e | 3265 | |
cc9784bd | 3266 | if (readn(fd, buf, padding) < 0) { |
2caa48a2 ACM |
3267 | pr_err("%s: reading input file", __func__); |
3268 | return -1; | |
3269 | } | |
454c407e TZ |
3270 | if (session->repipe) { |
3271 | int retw = write(STDOUT_FILENO, buf, padding); | |
2caa48a2 ACM |
3272 | if (retw <= 0 || retw != padding) { |
3273 | pr_err("%s: repiping tracing data padding", __func__); | |
3274 | return -1; | |
3275 | } | |
454c407e | 3276 | } |
9215545e | 3277 | |
2caa48a2 ACM |
3278 | if (size_read + padding != size) { |
3279 | pr_err("%s: tracing data size mismatch", __func__); | |
3280 | return -1; | |
3281 | } | |
9215545e | 3282 | |
831394bd | 3283 | perf_evlist__prepare_tracepoint_events(session->evlist, |
29f5ffd3 | 3284 | session->tevent.pevent); |
8b6ee4c5 | 3285 | |
9215545e TZ |
3286 | return size_read + padding; |
3287 | } | |
c7929e47 | 3288 | |
45694aa7 | 3289 | int perf_event__synthesize_build_id(struct perf_tool *tool, |
d20deb64 | 3290 | struct dso *pos, u16 misc, |
8115d60c | 3291 | perf_event__handler_t process, |
743eb868 | 3292 | struct machine *machine) |
c7929e47 | 3293 | { |
8115d60c | 3294 | union perf_event ev; |
c7929e47 TZ |
3295 | size_t len; |
3296 | int err = 0; | |
3297 | ||
3298 | if (!pos->hit) | |
3299 | return err; | |
3300 | ||
3301 | memset(&ev, 0, sizeof(ev)); | |
3302 | ||
3303 | len = pos->long_name_len + 1; | |
9ac3e487 | 3304 | len = PERF_ALIGN(len, NAME_ALIGN); |
c7929e47 TZ |
3305 | memcpy(&ev.build_id.build_id, pos->build_id, sizeof(pos->build_id)); |
3306 | ev.build_id.header.type = PERF_RECORD_HEADER_BUILD_ID; | |
3307 | ev.build_id.header.misc = misc; | |
23346f21 | 3308 | ev.build_id.pid = machine->pid; |
c7929e47 TZ |
3309 | ev.build_id.header.size = sizeof(ev.build_id) + len; |
3310 | memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len); | |
3311 | ||
45694aa7 | 3312 | err = process(tool, &ev, NULL, machine); |
c7929e47 TZ |
3313 | |
3314 | return err; | |
3315 | } | |
3316 | ||
1d037ca1 | 3317 | int perf_event__process_build_id(struct perf_tool *tool __maybe_unused, |
d20deb64 | 3318 | union perf_event *event, |
8115d60c | 3319 | struct perf_session *session) |
c7929e47 | 3320 | { |
8115d60c ACM |
3321 | __event_process_build_id(&event->build_id, |
3322 | event->build_id.filename, | |
a1645ce1 | 3323 | session); |
c7929e47 TZ |
3324 | return 0; |
3325 | } |