Commit | Line | Data |
---|---|---|
a9072bc0 | 1 | #include "util.h" |
7c6a1c65 | 2 | #include <sys/types.h> |
ba21594c | 3 | #include <byteswap.h> |
7c6a1c65 PZ |
4 | #include <unistd.h> |
5 | #include <stdio.h> | |
6 | #include <stdlib.h> | |
8671dab9 | 7 | #include <linux/list.h> |
ba21594c | 8 | #include <linux/kernel.h> |
b1e5a9be | 9 | #include <linux/bitops.h> |
fbe96f29 | 10 | #include <sys/utsname.h> |
7c6a1c65 | 11 | |
361c99a6 | 12 | #include "evlist.h" |
a91e5431 | 13 | #include "evsel.h" |
7c6a1c65 | 14 | #include "header.h" |
03456a15 FW |
15 | #include "../perf.h" |
16 | #include "trace-event.h" | |
301a0b02 | 17 | #include "session.h" |
8671dab9 | 18 | #include "symbol.h" |
4778d2e4 | 19 | #include "debug.h" |
fbe96f29 | 20 | #include "cpumap.h" |
50a9667c | 21 | #include "pmu.h" |
7dbf4dcf | 22 | #include "vdso.h" |
a1ae5655 | 23 | #include "strbuf.h" |
ebb296c2 | 24 | #include "build-id.h" |
cc9784bd | 25 | #include "data.h" |
7c6a1c65 | 26 | |
fbe96f29 SE |
27 | static u32 header_argc; |
28 | static const char **header_argv; | |
29 | ||
73323f54 SE |
30 | /* |
31 | * magic2 = "PERFILE2" | |
32 | * must be a numerical value to let the endianness | |
33 | * determine the memory layout. That way we are able | |
34 | * to detect endianness when reading the perf.data file | |
35 | * back. | |
36 | * | |
37 | * we check for legacy (PERFFILE) format. | |
38 | */ | |
39 | static const char *__perf_magic1 = "PERFFILE"; | |
40 | static const u64 __perf_magic2 = 0x32454c4946524550ULL; | |
41 | static const u64 __perf_magic2_sw = 0x50455246494c4532ULL; | |
7c6a1c65 | 42 | |
73323f54 | 43 | #define PERF_MAGIC __perf_magic2 |
7c6a1c65 | 44 | |
7c6a1c65 | 45 | struct perf_file_attr { |
cdd6c482 | 46 | struct perf_event_attr attr; |
7c6a1c65 PZ |
47 | struct perf_file_section ids; |
48 | }; | |
49 | ||
1c0b04d1 | 50 | void perf_header__set_feat(struct perf_header *header, int feat) |
8d06367f | 51 | { |
1c0b04d1 | 52 | set_bit(feat, header->adds_features); |
8d06367f ACM |
53 | } |
54 | ||
1c0b04d1 | 55 | void perf_header__clear_feat(struct perf_header *header, int feat) |
baa2f6ce | 56 | { |
1c0b04d1 | 57 | clear_bit(feat, header->adds_features); |
baa2f6ce ACM |
58 | } |
59 | ||
1c0b04d1 | 60 | bool perf_header__has_feat(const struct perf_header *header, int feat) |
8d06367f | 61 | { |
1c0b04d1 | 62 | return test_bit(feat, header->adds_features); |
8d06367f ACM |
63 | } |
64 | ||
3726cc75 | 65 | static int do_write(int fd, const void *buf, size_t size) |
7c6a1c65 PZ |
66 | { |
67 | while (size) { | |
68 | int ret = write(fd, buf, size); | |
69 | ||
70 | if (ret < 0) | |
d5eed904 | 71 | return -errno; |
7c6a1c65 PZ |
72 | |
73 | size -= ret; | |
74 | buf += ret; | |
75 | } | |
3726cc75 ACM |
76 | |
77 | return 0; | |
7c6a1c65 PZ |
78 | } |
79 | ||
e195fac8 | 80 | int write_padded(int fd, const void *bf, size_t count, size_t count_aligned) |
f92cb24c ACM |
81 | { |
82 | static const char zero_buf[NAME_ALIGN]; | |
83 | int err = do_write(fd, bf, count); | |
84 | ||
85 | if (!err) | |
86 | err = do_write(fd, zero_buf, count_aligned - count); | |
87 | ||
88 | return err; | |
89 | } | |
90 | ||
2bb00d2f KL |
91 | #define string_size(str) \ |
92 | (PERF_ALIGN((strlen(str) + 1), NAME_ALIGN) + sizeof(u32)) | |
93 | ||
fbe96f29 SE |
94 | static int do_write_string(int fd, const char *str) |
95 | { | |
96 | u32 len, olen; | |
97 | int ret; | |
98 | ||
99 | olen = strlen(str) + 1; | |
9ac3e487 | 100 | len = PERF_ALIGN(olen, NAME_ALIGN); |
fbe96f29 SE |
101 | |
102 | /* write len, incl. \0 */ | |
103 | ret = do_write(fd, &len, sizeof(len)); | |
104 | if (ret < 0) | |
105 | return ret; | |
106 | ||
107 | return write_padded(fd, str, olen, len); | |
108 | } | |
109 | ||
110 | static char *do_read_string(int fd, struct perf_header *ph) | |
111 | { | |
112 | ssize_t sz, ret; | |
113 | u32 len; | |
114 | char *buf; | |
115 | ||
5323f60c | 116 | sz = readn(fd, &len, sizeof(len)); |
fbe96f29 SE |
117 | if (sz < (ssize_t)sizeof(len)) |
118 | return NULL; | |
119 | ||
120 | if (ph->needs_swap) | |
121 | len = bswap_32(len); | |
122 | ||
123 | buf = malloc(len); | |
124 | if (!buf) | |
125 | return NULL; | |
126 | ||
5323f60c | 127 | ret = readn(fd, buf, len); |
fbe96f29 SE |
128 | if (ret == (ssize_t)len) { |
129 | /* | |
130 | * strings are padded by zeroes | |
131 | * thus the actual strlen of buf | |
132 | * may be less than len | |
133 | */ | |
134 | return buf; | |
135 | } | |
136 | ||
137 | free(buf); | |
138 | return NULL; | |
139 | } | |
140 | ||
141 | int | |
142 | perf_header__set_cmdline(int argc, const char **argv) | |
143 | { | |
144 | int i; | |
145 | ||
56e6f602 DA |
146 | /* |
147 | * If header_argv has already been set, do not override it. | |
148 | * This allows a command to set the cmdline, parse args and | |
149 | * then call another builtin function that implements a | |
150 | * command -- e.g, cmd_kvm calling cmd_record. | |
151 | */ | |
152 | if (header_argv) | |
153 | return 0; | |
154 | ||
fbe96f29 SE |
155 | header_argc = (u32)argc; |
156 | ||
157 | /* do not include NULL termination */ | |
158 | header_argv = calloc(argc, sizeof(char *)); | |
159 | if (!header_argv) | |
160 | return -ENOMEM; | |
161 | ||
162 | /* | |
163 | * must copy argv contents because it gets moved | |
164 | * around during option parsing | |
165 | */ | |
166 | for (i = 0; i < argc ; i++) | |
167 | header_argv[i] = argv[i]; | |
168 | ||
169 | return 0; | |
170 | } | |
171 | ||
1d037ca1 | 172 | static int write_tracing_data(int fd, struct perf_header *h __maybe_unused, |
fbe96f29 SE |
173 | struct perf_evlist *evlist) |
174 | { | |
175 | return read_tracing_data(fd, &evlist->entries); | |
176 | } | |
177 | ||
178 | ||
179 | static int write_build_id(int fd, struct perf_header *h, | |
1d037ca1 | 180 | struct perf_evlist *evlist __maybe_unused) |
fbe96f29 SE |
181 | { |
182 | struct perf_session *session; | |
183 | int err; | |
184 | ||
185 | session = container_of(h, struct perf_session, header); | |
186 | ||
e20960c0 RR |
187 | if (!perf_session__read_build_ids(session, true)) |
188 | return -1; | |
189 | ||
714c9c4a | 190 | err = perf_session__write_buildid_table(session, fd); |
fbe96f29 SE |
191 | if (err < 0) { |
192 | pr_debug("failed to write buildid table\n"); | |
193 | return err; | |
194 | } | |
73c5d224 | 195 | perf_session__cache_build_ids(session); |
fbe96f29 SE |
196 | |
197 | return 0; | |
198 | } | |
199 | ||
1d037ca1 IT |
200 | static int write_hostname(int fd, struct perf_header *h __maybe_unused, |
201 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
202 | { |
203 | struct utsname uts; | |
204 | int ret; | |
205 | ||
206 | ret = uname(&uts); | |
207 | if (ret < 0) | |
208 | return -1; | |
209 | ||
210 | return do_write_string(fd, uts.nodename); | |
211 | } | |
212 | ||
1d037ca1 IT |
213 | static int write_osrelease(int fd, struct perf_header *h __maybe_unused, |
214 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
215 | { |
216 | struct utsname uts; | |
217 | int ret; | |
218 | ||
219 | ret = uname(&uts); | |
220 | if (ret < 0) | |
221 | return -1; | |
222 | ||
223 | return do_write_string(fd, uts.release); | |
224 | } | |
225 | ||
1d037ca1 IT |
226 | static int write_arch(int fd, struct perf_header *h __maybe_unused, |
227 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
228 | { |
229 | struct utsname uts; | |
230 | int ret; | |
231 | ||
232 | ret = uname(&uts); | |
233 | if (ret < 0) | |
234 | return -1; | |
235 | ||
236 | return do_write_string(fd, uts.machine); | |
237 | } | |
238 | ||
1d037ca1 IT |
239 | static int write_version(int fd, struct perf_header *h __maybe_unused, |
240 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
241 | { |
242 | return do_write_string(fd, perf_version_string); | |
243 | } | |
244 | ||
493c3031 | 245 | static int __write_cpudesc(int fd, const char *cpuinfo_proc) |
fbe96f29 | 246 | { |
fbe96f29 SE |
247 | FILE *file; |
248 | char *buf = NULL; | |
249 | char *s, *p; | |
493c3031 | 250 | const char *search = cpuinfo_proc; |
fbe96f29 SE |
251 | size_t len = 0; |
252 | int ret = -1; | |
253 | ||
254 | if (!search) | |
255 | return -1; | |
256 | ||
257 | file = fopen("/proc/cpuinfo", "r"); | |
258 | if (!file) | |
259 | return -1; | |
260 | ||
261 | while (getline(&buf, &len, file) > 0) { | |
262 | ret = strncmp(buf, search, strlen(search)); | |
263 | if (!ret) | |
264 | break; | |
265 | } | |
266 | ||
ed307758 WN |
267 | if (ret) { |
268 | ret = -1; | |
fbe96f29 | 269 | goto done; |
ed307758 | 270 | } |
fbe96f29 SE |
271 | |
272 | s = buf; | |
273 | ||
274 | p = strchr(buf, ':'); | |
275 | if (p && *(p+1) == ' ' && *(p+2)) | |
276 | s = p + 2; | |
277 | p = strchr(s, '\n'); | |
278 | if (p) | |
279 | *p = '\0'; | |
280 | ||
281 | /* squash extra space characters (branding string) */ | |
282 | p = s; | |
283 | while (*p) { | |
284 | if (isspace(*p)) { | |
285 | char *r = p + 1; | |
286 | char *q = r; | |
287 | *p = ' '; | |
288 | while (*q && isspace(*q)) | |
289 | q++; | |
290 | if (q != (p+1)) | |
291 | while ((*r++ = *q++)); | |
292 | } | |
293 | p++; | |
294 | } | |
295 | ret = do_write_string(fd, s); | |
296 | done: | |
297 | free(buf); | |
298 | fclose(file); | |
299 | return ret; | |
300 | } | |
301 | ||
493c3031 WN |
302 | static int write_cpudesc(int fd, struct perf_header *h __maybe_unused, |
303 | struct perf_evlist *evlist __maybe_unused) | |
304 | { | |
305 | #ifndef CPUINFO_PROC | |
306 | #define CPUINFO_PROC {"model name", } | |
307 | #endif | |
308 | const char *cpuinfo_procs[] = CPUINFO_PROC; | |
309 | unsigned int i; | |
310 | ||
311 | for (i = 0; i < ARRAY_SIZE(cpuinfo_procs); i++) { | |
312 | int ret; | |
313 | ret = __write_cpudesc(fd, cpuinfo_procs[i]); | |
314 | if (ret >= 0) | |
315 | return ret; | |
316 | } | |
317 | return -1; | |
318 | } | |
319 | ||
320 | ||
1d037ca1 IT |
321 | static int write_nrcpus(int fd, struct perf_header *h __maybe_unused, |
322 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
323 | { |
324 | long nr; | |
325 | u32 nrc, nra; | |
326 | int ret; | |
327 | ||
328 | nr = sysconf(_SC_NPROCESSORS_CONF); | |
329 | if (nr < 0) | |
330 | return -1; | |
331 | ||
332 | nrc = (u32)(nr & UINT_MAX); | |
333 | ||
334 | nr = sysconf(_SC_NPROCESSORS_ONLN); | |
335 | if (nr < 0) | |
336 | return -1; | |
337 | ||
338 | nra = (u32)(nr & UINT_MAX); | |
339 | ||
340 | ret = do_write(fd, &nrc, sizeof(nrc)); | |
341 | if (ret < 0) | |
342 | return ret; | |
343 | ||
344 | return do_write(fd, &nra, sizeof(nra)); | |
345 | } | |
346 | ||
1d037ca1 | 347 | static int write_event_desc(int fd, struct perf_header *h __maybe_unused, |
fbe96f29 SE |
348 | struct perf_evlist *evlist) |
349 | { | |
6606f873 | 350 | struct perf_evsel *evsel; |
74ba9e11 | 351 | u32 nre, nri, sz; |
fbe96f29 SE |
352 | int ret; |
353 | ||
74ba9e11 | 354 | nre = evlist->nr_entries; |
fbe96f29 SE |
355 | |
356 | /* | |
357 | * write number of events | |
358 | */ | |
359 | ret = do_write(fd, &nre, sizeof(nre)); | |
360 | if (ret < 0) | |
361 | return ret; | |
362 | ||
363 | /* | |
364 | * size of perf_event_attr struct | |
365 | */ | |
6606f873 | 366 | sz = (u32)sizeof(evsel->attr); |
fbe96f29 SE |
367 | ret = do_write(fd, &sz, sizeof(sz)); |
368 | if (ret < 0) | |
369 | return ret; | |
370 | ||
0050f7aa | 371 | evlist__for_each(evlist, evsel) { |
6606f873 | 372 | ret = do_write(fd, &evsel->attr, sz); |
fbe96f29 SE |
373 | if (ret < 0) |
374 | return ret; | |
375 | /* | |
376 | * write number of unique id per event | |
377 | * there is one id per instance of an event | |
378 | * | |
379 | * copy into an nri to be independent of the | |
380 | * type of ids, | |
381 | */ | |
6606f873 | 382 | nri = evsel->ids; |
fbe96f29 SE |
383 | ret = do_write(fd, &nri, sizeof(nri)); |
384 | if (ret < 0) | |
385 | return ret; | |
386 | ||
387 | /* | |
388 | * write event string as passed on cmdline | |
389 | */ | |
6606f873 | 390 | ret = do_write_string(fd, perf_evsel__name(evsel)); |
fbe96f29 SE |
391 | if (ret < 0) |
392 | return ret; | |
393 | /* | |
394 | * write unique ids for this event | |
395 | */ | |
6606f873 | 396 | ret = do_write(fd, evsel->id, evsel->ids * sizeof(u64)); |
fbe96f29 SE |
397 | if (ret < 0) |
398 | return ret; | |
399 | } | |
400 | return 0; | |
401 | } | |
402 | ||
1d037ca1 IT |
403 | static int write_cmdline(int fd, struct perf_header *h __maybe_unused, |
404 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
405 | { |
406 | char buf[MAXPATHLEN]; | |
407 | char proc[32]; | |
408 | u32 i, n; | |
409 | int ret; | |
410 | ||
411 | /* | |
412 | * actual atual path to perf binary | |
413 | */ | |
414 | sprintf(proc, "/proc/%d/exe", getpid()); | |
415 | ret = readlink(proc, buf, sizeof(buf)); | |
416 | if (ret <= 0) | |
417 | return -1; | |
418 | ||
419 | /* readlink() does not add null termination */ | |
420 | buf[ret] = '\0'; | |
421 | ||
422 | /* account for binary path */ | |
423 | n = header_argc + 1; | |
424 | ||
425 | ret = do_write(fd, &n, sizeof(n)); | |
426 | if (ret < 0) | |
427 | return ret; | |
428 | ||
429 | ret = do_write_string(fd, buf); | |
430 | if (ret < 0) | |
431 | return ret; | |
432 | ||
433 | for (i = 0 ; i < header_argc; i++) { | |
434 | ret = do_write_string(fd, header_argv[i]); | |
435 | if (ret < 0) | |
436 | return ret; | |
437 | } | |
438 | return 0; | |
439 | } | |
440 | ||
441 | #define CORE_SIB_FMT \ | |
442 | "/sys/devices/system/cpu/cpu%d/topology/core_siblings_list" | |
443 | #define THRD_SIB_FMT \ | |
444 | "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list" | |
445 | ||
446 | struct cpu_topo { | |
2bb00d2f | 447 | u32 cpu_nr; |
fbe96f29 SE |
448 | u32 core_sib; |
449 | u32 thread_sib; | |
450 | char **core_siblings; | |
451 | char **thread_siblings; | |
2bb00d2f KL |
452 | int *core_id; |
453 | int *phy_pkg_id; | |
fbe96f29 SE |
454 | }; |
455 | ||
456 | static int build_cpu_topo(struct cpu_topo *tp, int cpu) | |
457 | { | |
458 | FILE *fp; | |
459 | char filename[MAXPATHLEN]; | |
460 | char *buf = NULL, *p; | |
461 | size_t len = 0; | |
c5885749 | 462 | ssize_t sret; |
fbe96f29 SE |
463 | u32 i = 0; |
464 | int ret = -1; | |
465 | ||
466 | sprintf(filename, CORE_SIB_FMT, cpu); | |
467 | fp = fopen(filename, "r"); | |
468 | if (!fp) | |
c5885749 | 469 | goto try_threads; |
fbe96f29 | 470 | |
c5885749 | 471 | sret = getline(&buf, &len, fp); |
fbe96f29 | 472 | fclose(fp); |
c5885749 SE |
473 | if (sret <= 0) |
474 | goto try_threads; | |
fbe96f29 SE |
475 | |
476 | p = strchr(buf, '\n'); | |
477 | if (p) | |
478 | *p = '\0'; | |
479 | ||
480 | for (i = 0; i < tp->core_sib; i++) { | |
481 | if (!strcmp(buf, tp->core_siblings[i])) | |
482 | break; | |
483 | } | |
484 | if (i == tp->core_sib) { | |
485 | tp->core_siblings[i] = buf; | |
486 | tp->core_sib++; | |
487 | buf = NULL; | |
488 | len = 0; | |
489 | } | |
c5885749 | 490 | ret = 0; |
fbe96f29 | 491 | |
c5885749 | 492 | try_threads: |
fbe96f29 SE |
493 | sprintf(filename, THRD_SIB_FMT, cpu); |
494 | fp = fopen(filename, "r"); | |
495 | if (!fp) | |
496 | goto done; | |
497 | ||
498 | if (getline(&buf, &len, fp) <= 0) | |
499 | goto done; | |
500 | ||
501 | p = strchr(buf, '\n'); | |
502 | if (p) | |
503 | *p = '\0'; | |
504 | ||
505 | for (i = 0; i < tp->thread_sib; i++) { | |
506 | if (!strcmp(buf, tp->thread_siblings[i])) | |
507 | break; | |
508 | } | |
509 | if (i == tp->thread_sib) { | |
510 | tp->thread_siblings[i] = buf; | |
511 | tp->thread_sib++; | |
512 | buf = NULL; | |
513 | } | |
514 | ret = 0; | |
515 | done: | |
2bb00d2f KL |
516 | tp->core_id[cpu] = cpu_map__get_core_id(cpu); |
517 | tp->phy_pkg_id[cpu] = cpu_map__get_socket_id(cpu); | |
518 | ||
fbe96f29 SE |
519 | if(fp) |
520 | fclose(fp); | |
521 | free(buf); | |
522 | return ret; | |
523 | } | |
524 | ||
525 | static void free_cpu_topo(struct cpu_topo *tp) | |
526 | { | |
527 | u32 i; | |
528 | ||
529 | if (!tp) | |
530 | return; | |
531 | ||
532 | for (i = 0 ; i < tp->core_sib; i++) | |
74cf249d | 533 | zfree(&tp->core_siblings[i]); |
fbe96f29 SE |
534 | |
535 | for (i = 0 ; i < tp->thread_sib; i++) | |
74cf249d | 536 | zfree(&tp->thread_siblings[i]); |
fbe96f29 SE |
537 | |
538 | free(tp); | |
539 | } | |
540 | ||
541 | static struct cpu_topo *build_cpu_topology(void) | |
542 | { | |
543 | struct cpu_topo *tp; | |
544 | void *addr; | |
545 | u32 nr, i; | |
2bb00d2f | 546 | size_t sz, sz_id; |
fbe96f29 SE |
547 | long ncpus; |
548 | int ret = -1; | |
549 | ||
550 | ncpus = sysconf(_SC_NPROCESSORS_CONF); | |
551 | if (ncpus < 0) | |
552 | return NULL; | |
553 | ||
554 | nr = (u32)(ncpus & UINT_MAX); | |
555 | ||
556 | sz = nr * sizeof(char *); | |
2bb00d2f | 557 | sz_id = nr * sizeof(int); |
fbe96f29 | 558 | |
2bb00d2f | 559 | addr = calloc(1, sizeof(*tp) + 2 * sz + 2 * sz_id); |
fbe96f29 SE |
560 | if (!addr) |
561 | return NULL; | |
562 | ||
563 | tp = addr; | |
2bb00d2f | 564 | tp->cpu_nr = nr; |
fbe96f29 SE |
565 | addr += sizeof(*tp); |
566 | tp->core_siblings = addr; | |
567 | addr += sz; | |
568 | tp->thread_siblings = addr; | |
2bb00d2f KL |
569 | addr += sz; |
570 | tp->core_id = addr; | |
571 | addr += sz_id; | |
572 | tp->phy_pkg_id = addr; | |
fbe96f29 SE |
573 | |
574 | for (i = 0; i < nr; i++) { | |
575 | ret = build_cpu_topo(tp, i); | |
576 | if (ret < 0) | |
577 | break; | |
578 | } | |
579 | if (ret) { | |
580 | free_cpu_topo(tp); | |
581 | tp = NULL; | |
582 | } | |
583 | return tp; | |
584 | } | |
585 | ||
1d037ca1 IT |
586 | static int write_cpu_topology(int fd, struct perf_header *h __maybe_unused, |
587 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
588 | { |
589 | struct cpu_topo *tp; | |
590 | u32 i; | |
591 | int ret; | |
592 | ||
593 | tp = build_cpu_topology(); | |
594 | if (!tp) | |
595 | return -1; | |
596 | ||
597 | ret = do_write(fd, &tp->core_sib, sizeof(tp->core_sib)); | |
598 | if (ret < 0) | |
599 | goto done; | |
600 | ||
601 | for (i = 0; i < tp->core_sib; i++) { | |
602 | ret = do_write_string(fd, tp->core_siblings[i]); | |
603 | if (ret < 0) | |
604 | goto done; | |
605 | } | |
606 | ret = do_write(fd, &tp->thread_sib, sizeof(tp->thread_sib)); | |
607 | if (ret < 0) | |
608 | goto done; | |
609 | ||
610 | for (i = 0; i < tp->thread_sib; i++) { | |
611 | ret = do_write_string(fd, tp->thread_siblings[i]); | |
612 | if (ret < 0) | |
613 | break; | |
614 | } | |
2bb00d2f KL |
615 | |
616 | for (i = 0; i < tp->cpu_nr; i++) { | |
617 | ret = do_write(fd, &tp->core_id[i], sizeof(int)); | |
618 | if (ret < 0) | |
619 | return ret; | |
620 | ret = do_write(fd, &tp->phy_pkg_id[i], sizeof(int)); | |
621 | if (ret < 0) | |
622 | return ret; | |
623 | } | |
fbe96f29 SE |
624 | done: |
625 | free_cpu_topo(tp); | |
626 | return ret; | |
627 | } | |
628 | ||
629 | ||
630 | ||
1d037ca1 IT |
631 | static int write_total_mem(int fd, struct perf_header *h __maybe_unused, |
632 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
633 | { |
634 | char *buf = NULL; | |
635 | FILE *fp; | |
636 | size_t len = 0; | |
637 | int ret = -1, n; | |
638 | uint64_t mem; | |
639 | ||
640 | fp = fopen("/proc/meminfo", "r"); | |
641 | if (!fp) | |
642 | return -1; | |
643 | ||
644 | while (getline(&buf, &len, fp) > 0) { | |
645 | ret = strncmp(buf, "MemTotal:", 9); | |
646 | if (!ret) | |
647 | break; | |
648 | } | |
649 | if (!ret) { | |
650 | n = sscanf(buf, "%*s %"PRIu64, &mem); | |
651 | if (n == 1) | |
652 | ret = do_write(fd, &mem, sizeof(mem)); | |
ed307758 WN |
653 | } else |
654 | ret = -1; | |
fbe96f29 SE |
655 | free(buf); |
656 | fclose(fp); | |
657 | return ret; | |
658 | } | |
659 | ||
660 | static int write_topo_node(int fd, int node) | |
661 | { | |
662 | char str[MAXPATHLEN]; | |
663 | char field[32]; | |
664 | char *buf = NULL, *p; | |
665 | size_t len = 0; | |
666 | FILE *fp; | |
667 | u64 mem_total, mem_free, mem; | |
668 | int ret = -1; | |
669 | ||
670 | sprintf(str, "/sys/devices/system/node/node%d/meminfo", node); | |
671 | fp = fopen(str, "r"); | |
672 | if (!fp) | |
673 | return -1; | |
674 | ||
675 | while (getline(&buf, &len, fp) > 0) { | |
676 | /* skip over invalid lines */ | |
677 | if (!strchr(buf, ':')) | |
678 | continue; | |
a761a2d8 | 679 | if (sscanf(buf, "%*s %*d %31s %"PRIu64, field, &mem) != 2) |
fbe96f29 SE |
680 | goto done; |
681 | if (!strcmp(field, "MemTotal:")) | |
682 | mem_total = mem; | |
683 | if (!strcmp(field, "MemFree:")) | |
684 | mem_free = mem; | |
685 | } | |
686 | ||
687 | fclose(fp); | |
5809fde0 | 688 | fp = NULL; |
fbe96f29 SE |
689 | |
690 | ret = do_write(fd, &mem_total, sizeof(u64)); | |
691 | if (ret) | |
692 | goto done; | |
693 | ||
694 | ret = do_write(fd, &mem_free, sizeof(u64)); | |
695 | if (ret) | |
696 | goto done; | |
697 | ||
698 | ret = -1; | |
699 | sprintf(str, "/sys/devices/system/node/node%d/cpulist", node); | |
700 | ||
701 | fp = fopen(str, "r"); | |
702 | if (!fp) | |
703 | goto done; | |
704 | ||
705 | if (getline(&buf, &len, fp) <= 0) | |
706 | goto done; | |
707 | ||
708 | p = strchr(buf, '\n'); | |
709 | if (p) | |
710 | *p = '\0'; | |
711 | ||
712 | ret = do_write_string(fd, buf); | |
713 | done: | |
714 | free(buf); | |
5809fde0 TJ |
715 | if (fp) |
716 | fclose(fp); | |
fbe96f29 SE |
717 | return ret; |
718 | } | |
719 | ||
1d037ca1 IT |
720 | static int write_numa_topology(int fd, struct perf_header *h __maybe_unused, |
721 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
722 | { |
723 | char *buf = NULL; | |
724 | size_t len = 0; | |
725 | FILE *fp; | |
726 | struct cpu_map *node_map = NULL; | |
727 | char *c; | |
728 | u32 nr, i, j; | |
729 | int ret = -1; | |
730 | ||
731 | fp = fopen("/sys/devices/system/node/online", "r"); | |
732 | if (!fp) | |
733 | return -1; | |
734 | ||
735 | if (getline(&buf, &len, fp) <= 0) | |
736 | goto done; | |
737 | ||
738 | c = strchr(buf, '\n'); | |
739 | if (c) | |
740 | *c = '\0'; | |
741 | ||
742 | node_map = cpu_map__new(buf); | |
743 | if (!node_map) | |
744 | goto done; | |
745 | ||
746 | nr = (u32)node_map->nr; | |
747 | ||
748 | ret = do_write(fd, &nr, sizeof(nr)); | |
749 | if (ret < 0) | |
750 | goto done; | |
751 | ||
752 | for (i = 0; i < nr; i++) { | |
753 | j = (u32)node_map->map[i]; | |
754 | ret = do_write(fd, &j, sizeof(j)); | |
755 | if (ret < 0) | |
756 | break; | |
757 | ||
758 | ret = write_topo_node(fd, i); | |
759 | if (ret < 0) | |
760 | break; | |
761 | } | |
762 | done: | |
763 | free(buf); | |
764 | fclose(fp); | |
765 | free(node_map); | |
766 | return ret; | |
767 | } | |
768 | ||
50a9667c RR |
769 | /* |
770 | * File format: | |
771 | * | |
772 | * struct pmu_mappings { | |
773 | * u32 pmu_num; | |
774 | * struct pmu_map { | |
775 | * u32 type; | |
776 | * char name[]; | |
777 | * }[pmu_num]; | |
778 | * }; | |
779 | */ | |
780 | ||
1d037ca1 IT |
781 | static int write_pmu_mappings(int fd, struct perf_header *h __maybe_unused, |
782 | struct perf_evlist *evlist __maybe_unused) | |
50a9667c RR |
783 | { |
784 | struct perf_pmu *pmu = NULL; | |
785 | off_t offset = lseek(fd, 0, SEEK_CUR); | |
786 | __u32 pmu_num = 0; | |
5323f60c | 787 | int ret; |
50a9667c RR |
788 | |
789 | /* write real pmu_num later */ | |
5323f60c NK |
790 | ret = do_write(fd, &pmu_num, sizeof(pmu_num)); |
791 | if (ret < 0) | |
792 | return ret; | |
50a9667c RR |
793 | |
794 | while ((pmu = perf_pmu__scan(pmu))) { | |
795 | if (!pmu->name) | |
796 | continue; | |
797 | pmu_num++; | |
5323f60c NK |
798 | |
799 | ret = do_write(fd, &pmu->type, sizeof(pmu->type)); | |
800 | if (ret < 0) | |
801 | return ret; | |
802 | ||
803 | ret = do_write_string(fd, pmu->name); | |
804 | if (ret < 0) | |
805 | return ret; | |
50a9667c RR |
806 | } |
807 | ||
808 | if (pwrite(fd, &pmu_num, sizeof(pmu_num), offset) != sizeof(pmu_num)) { | |
809 | /* discard all */ | |
810 | lseek(fd, offset, SEEK_SET); | |
811 | return -1; | |
812 | } | |
813 | ||
814 | return 0; | |
815 | } | |
816 | ||
a8bb559b NK |
817 | /* |
818 | * File format: | |
819 | * | |
820 | * struct group_descs { | |
821 | * u32 nr_groups; | |
822 | * struct group_desc { | |
823 | * char name[]; | |
824 | * u32 leader_idx; | |
825 | * u32 nr_members; | |
826 | * }[nr_groups]; | |
827 | * }; | |
828 | */ | |
829 | static int write_group_desc(int fd, struct perf_header *h __maybe_unused, | |
830 | struct perf_evlist *evlist) | |
831 | { | |
832 | u32 nr_groups = evlist->nr_groups; | |
833 | struct perf_evsel *evsel; | |
834 | int ret; | |
835 | ||
836 | ret = do_write(fd, &nr_groups, sizeof(nr_groups)); | |
837 | if (ret < 0) | |
838 | return ret; | |
839 | ||
0050f7aa | 840 | evlist__for_each(evlist, evsel) { |
a8bb559b NK |
841 | if (perf_evsel__is_group_leader(evsel) && |
842 | evsel->nr_members > 1) { | |
843 | const char *name = evsel->group_name ?: "{anon_group}"; | |
844 | u32 leader_idx = evsel->idx; | |
845 | u32 nr_members = evsel->nr_members; | |
846 | ||
847 | ret = do_write_string(fd, name); | |
848 | if (ret < 0) | |
849 | return ret; | |
850 | ||
851 | ret = do_write(fd, &leader_idx, sizeof(leader_idx)); | |
852 | if (ret < 0) | |
853 | return ret; | |
854 | ||
855 | ret = do_write(fd, &nr_members, sizeof(nr_members)); | |
856 | if (ret < 0) | |
857 | return ret; | |
858 | } | |
859 | } | |
860 | return 0; | |
861 | } | |
862 | ||
fbe96f29 SE |
863 | /* |
864 | * default get_cpuid(): nothing gets recorded | |
865 | * actual implementation must be in arch/$(ARCH)/util/header.c | |
866 | */ | |
1d037ca1 IT |
867 | int __attribute__ ((weak)) get_cpuid(char *buffer __maybe_unused, |
868 | size_t sz __maybe_unused) | |
fbe96f29 SE |
869 | { |
870 | return -1; | |
871 | } | |
872 | ||
1d037ca1 IT |
873 | static int write_cpuid(int fd, struct perf_header *h __maybe_unused, |
874 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
875 | { |
876 | char buffer[64]; | |
877 | int ret; | |
878 | ||
879 | ret = get_cpuid(buffer, sizeof(buffer)); | |
880 | if (!ret) | |
881 | goto write_it; | |
882 | ||
883 | return -1; | |
884 | write_it: | |
885 | return do_write_string(fd, buffer); | |
886 | } | |
887 | ||
1d037ca1 IT |
888 | static int write_branch_stack(int fd __maybe_unused, |
889 | struct perf_header *h __maybe_unused, | |
890 | struct perf_evlist *evlist __maybe_unused) | |
330aa675 SE |
891 | { |
892 | return 0; | |
893 | } | |
894 | ||
99fa2984 | 895 | static int write_auxtrace(int fd, struct perf_header *h, |
4025ea40 AH |
896 | struct perf_evlist *evlist __maybe_unused) |
897 | { | |
99fa2984 AH |
898 | struct perf_session *session; |
899 | int err; | |
900 | ||
901 | session = container_of(h, struct perf_session, header); | |
902 | ||
903 | err = auxtrace_index__write(fd, &session->auxtrace_index); | |
904 | if (err < 0) | |
905 | pr_err("Failed to write auxtrace index\n"); | |
906 | return err; | |
4025ea40 AH |
907 | } |
908 | ||
7e94cfcc NK |
909 | static void print_hostname(struct perf_header *ph, int fd __maybe_unused, |
910 | FILE *fp) | |
fbe96f29 | 911 | { |
7e94cfcc | 912 | fprintf(fp, "# hostname : %s\n", ph->env.hostname); |
fbe96f29 SE |
913 | } |
914 | ||
7e94cfcc NK |
915 | static void print_osrelease(struct perf_header *ph, int fd __maybe_unused, |
916 | FILE *fp) | |
fbe96f29 | 917 | { |
7e94cfcc | 918 | fprintf(fp, "# os release : %s\n", ph->env.os_release); |
fbe96f29 SE |
919 | } |
920 | ||
7e94cfcc | 921 | static void print_arch(struct perf_header *ph, int fd __maybe_unused, FILE *fp) |
fbe96f29 | 922 | { |
7e94cfcc | 923 | fprintf(fp, "# arch : %s\n", ph->env.arch); |
fbe96f29 SE |
924 | } |
925 | ||
7e94cfcc NK |
926 | static void print_cpudesc(struct perf_header *ph, int fd __maybe_unused, |
927 | FILE *fp) | |
fbe96f29 | 928 | { |
7e94cfcc | 929 | fprintf(fp, "# cpudesc : %s\n", ph->env.cpu_desc); |
fbe96f29 SE |
930 | } |
931 | ||
7e94cfcc NK |
932 | static void print_nrcpus(struct perf_header *ph, int fd __maybe_unused, |
933 | FILE *fp) | |
fbe96f29 | 934 | { |
7e94cfcc NK |
935 | fprintf(fp, "# nrcpus online : %u\n", ph->env.nr_cpus_online); |
936 | fprintf(fp, "# nrcpus avail : %u\n", ph->env.nr_cpus_avail); | |
fbe96f29 SE |
937 | } |
938 | ||
7e94cfcc NK |
939 | static void print_version(struct perf_header *ph, int fd __maybe_unused, |
940 | FILE *fp) | |
fbe96f29 | 941 | { |
7e94cfcc | 942 | fprintf(fp, "# perf version : %s\n", ph->env.version); |
fbe96f29 SE |
943 | } |
944 | ||
7e94cfcc NK |
945 | static void print_cmdline(struct perf_header *ph, int fd __maybe_unused, |
946 | FILE *fp) | |
fbe96f29 | 947 | { |
7e94cfcc | 948 | int nr, i; |
fbe96f29 | 949 | |
7e94cfcc | 950 | nr = ph->env.nr_cmdline; |
fbe96f29 SE |
951 | |
952 | fprintf(fp, "# cmdline : "); | |
953 | ||
768dd3f3 JO |
954 | for (i = 0; i < nr; i++) |
955 | fprintf(fp, "%s ", ph->env.cmdline_argv[i]); | |
fbe96f29 SE |
956 | fputc('\n', fp); |
957 | } | |
958 | ||
7e94cfcc NK |
959 | static void print_cpu_topology(struct perf_header *ph, int fd __maybe_unused, |
960 | FILE *fp) | |
fbe96f29 | 961 | { |
7e94cfcc | 962 | int nr, i; |
fbe96f29 | 963 | char *str; |
2bb00d2f | 964 | int cpu_nr = ph->env.nr_cpus_online; |
fbe96f29 | 965 | |
7e94cfcc NK |
966 | nr = ph->env.nr_sibling_cores; |
967 | str = ph->env.sibling_cores; | |
fbe96f29 SE |
968 | |
969 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 970 | fprintf(fp, "# sibling cores : %s\n", str); |
7e94cfcc | 971 | str += strlen(str) + 1; |
fbe96f29 SE |
972 | } |
973 | ||
7e94cfcc NK |
974 | nr = ph->env.nr_sibling_threads; |
975 | str = ph->env.sibling_threads; | |
fbe96f29 SE |
976 | |
977 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 978 | fprintf(fp, "# sibling threads : %s\n", str); |
7e94cfcc | 979 | str += strlen(str) + 1; |
fbe96f29 | 980 | } |
2bb00d2f KL |
981 | |
982 | if (ph->env.cpu != NULL) { | |
983 | for (i = 0; i < cpu_nr; i++) | |
984 | fprintf(fp, "# CPU %d: Core ID %d, Socket ID %d\n", i, | |
985 | ph->env.cpu[i].core_id, ph->env.cpu[i].socket_id); | |
986 | } else | |
987 | fprintf(fp, "# Core ID and Socket ID information is not available\n"); | |
fbe96f29 SE |
988 | } |
989 | ||
4e1b9c67 | 990 | static void free_event_desc(struct perf_evsel *events) |
fbe96f29 | 991 | { |
4e1b9c67 RR |
992 | struct perf_evsel *evsel; |
993 | ||
994 | if (!events) | |
995 | return; | |
996 | ||
997 | for (evsel = events; evsel->attr.size; evsel++) { | |
74cf249d ACM |
998 | zfree(&evsel->name); |
999 | zfree(&evsel->id); | |
4e1b9c67 RR |
1000 | } |
1001 | ||
1002 | free(events); | |
1003 | } | |
1004 | ||
1005 | static struct perf_evsel * | |
1006 | read_event_desc(struct perf_header *ph, int fd) | |
1007 | { | |
1008 | struct perf_evsel *evsel, *events = NULL; | |
1009 | u64 *id; | |
fbe96f29 | 1010 | void *buf = NULL; |
62db9068 SE |
1011 | u32 nre, sz, nr, i, j; |
1012 | ssize_t ret; | |
1013 | size_t msz; | |
fbe96f29 SE |
1014 | |
1015 | /* number of events */ | |
5323f60c | 1016 | ret = readn(fd, &nre, sizeof(nre)); |
fbe96f29 SE |
1017 | if (ret != (ssize_t)sizeof(nre)) |
1018 | goto error; | |
1019 | ||
1020 | if (ph->needs_swap) | |
1021 | nre = bswap_32(nre); | |
1022 | ||
5323f60c | 1023 | ret = readn(fd, &sz, sizeof(sz)); |
fbe96f29 SE |
1024 | if (ret != (ssize_t)sizeof(sz)) |
1025 | goto error; | |
1026 | ||
1027 | if (ph->needs_swap) | |
1028 | sz = bswap_32(sz); | |
1029 | ||
62db9068 | 1030 | /* buffer to hold on file attr struct */ |
fbe96f29 SE |
1031 | buf = malloc(sz); |
1032 | if (!buf) | |
1033 | goto error; | |
1034 | ||
4e1b9c67 RR |
1035 | /* the last event terminates with evsel->attr.size == 0: */ |
1036 | events = calloc(nre + 1, sizeof(*events)); | |
1037 | if (!events) | |
1038 | goto error; | |
1039 | ||
1040 | msz = sizeof(evsel->attr); | |
9fafd98f | 1041 | if (sz < msz) |
fbe96f29 SE |
1042 | msz = sz; |
1043 | ||
4e1b9c67 RR |
1044 | for (i = 0, evsel = events; i < nre; evsel++, i++) { |
1045 | evsel->idx = i; | |
fbe96f29 | 1046 | |
62db9068 SE |
1047 | /* |
1048 | * must read entire on-file attr struct to | |
1049 | * sync up with layout. | |
1050 | */ | |
5323f60c | 1051 | ret = readn(fd, buf, sz); |
fbe96f29 SE |
1052 | if (ret != (ssize_t)sz) |
1053 | goto error; | |
1054 | ||
1055 | if (ph->needs_swap) | |
1056 | perf_event__attr_swap(buf); | |
1057 | ||
4e1b9c67 | 1058 | memcpy(&evsel->attr, buf, msz); |
fbe96f29 | 1059 | |
5323f60c | 1060 | ret = readn(fd, &nr, sizeof(nr)); |
fbe96f29 SE |
1061 | if (ret != (ssize_t)sizeof(nr)) |
1062 | goto error; | |
1063 | ||
0807d2d8 | 1064 | if (ph->needs_swap) { |
fbe96f29 | 1065 | nr = bswap_32(nr); |
0807d2d8 ACM |
1066 | evsel->needs_swap = true; |
1067 | } | |
fbe96f29 | 1068 | |
4e1b9c67 RR |
1069 | evsel->name = do_read_string(fd, ph); |
1070 | ||
1071 | if (!nr) | |
1072 | continue; | |
1073 | ||
1074 | id = calloc(nr, sizeof(*id)); | |
1075 | if (!id) | |
1076 | goto error; | |
1077 | evsel->ids = nr; | |
1078 | evsel->id = id; | |
1079 | ||
1080 | for (j = 0 ; j < nr; j++) { | |
5323f60c | 1081 | ret = readn(fd, id, sizeof(*id)); |
4e1b9c67 RR |
1082 | if (ret != (ssize_t)sizeof(*id)) |
1083 | goto error; | |
1084 | if (ph->needs_swap) | |
1085 | *id = bswap_64(*id); | |
1086 | id++; | |
1087 | } | |
1088 | } | |
1089 | out: | |
04662523 | 1090 | free(buf); |
4e1b9c67 RR |
1091 | return events; |
1092 | error: | |
4cc97614 | 1093 | free_event_desc(events); |
4e1b9c67 RR |
1094 | events = NULL; |
1095 | goto out; | |
1096 | } | |
1097 | ||
2c5e8c52 PZ |
1098 | static int __desc_attr__fprintf(FILE *fp, const char *name, const char *val, |
1099 | void *priv __attribute__((unused))) | |
1100 | { | |
1101 | return fprintf(fp, ", %s = %s", name, val); | |
1102 | } | |
1103 | ||
4e1b9c67 RR |
1104 | static void print_event_desc(struct perf_header *ph, int fd, FILE *fp) |
1105 | { | |
1106 | struct perf_evsel *evsel, *events = read_event_desc(ph, fd); | |
1107 | u32 j; | |
1108 | u64 *id; | |
1109 | ||
1110 | if (!events) { | |
1111 | fprintf(fp, "# event desc: not available or unable to read\n"); | |
1112 | return; | |
1113 | } | |
1114 | ||
1115 | for (evsel = events; evsel->attr.size; evsel++) { | |
1116 | fprintf(fp, "# event : name = %s, ", evsel->name); | |
fbe96f29 | 1117 | |
4e1b9c67 | 1118 | if (evsel->ids) { |
fbe96f29 | 1119 | fprintf(fp, ", id = {"); |
4e1b9c67 RR |
1120 | for (j = 0, id = evsel->id; j < evsel->ids; j++, id++) { |
1121 | if (j) | |
1122 | fputc(',', fp); | |
1123 | fprintf(fp, " %"PRIu64, *id); | |
1124 | } | |
fbe96f29 | 1125 | fprintf(fp, " }"); |
4e1b9c67 | 1126 | } |
814c8c38 | 1127 | |
2c5e8c52 | 1128 | perf_event_attr__fprintf(fp, &evsel->attr, __desc_attr__fprintf, NULL); |
4e1b9c67 | 1129 | |
fbe96f29 SE |
1130 | fputc('\n', fp); |
1131 | } | |
4e1b9c67 RR |
1132 | |
1133 | free_event_desc(events); | |
fbe96f29 SE |
1134 | } |
1135 | ||
7e94cfcc | 1136 | static void print_total_mem(struct perf_header *ph, int fd __maybe_unused, |
1d037ca1 | 1137 | FILE *fp) |
fbe96f29 | 1138 | { |
7e94cfcc | 1139 | fprintf(fp, "# total memory : %Lu kB\n", ph->env.total_mem); |
fbe96f29 SE |
1140 | } |
1141 | ||
7e94cfcc | 1142 | static void print_numa_topology(struct perf_header *ph, int fd __maybe_unused, |
1d037ca1 | 1143 | FILE *fp) |
fbe96f29 | 1144 | { |
fbe96f29 | 1145 | u32 nr, c, i; |
7e94cfcc | 1146 | char *str, *tmp; |
fbe96f29 SE |
1147 | uint64_t mem_total, mem_free; |
1148 | ||
1149 | /* nr nodes */ | |
7e94cfcc NK |
1150 | nr = ph->env.nr_numa_nodes; |
1151 | str = ph->env.numa_nodes; | |
fbe96f29 SE |
1152 | |
1153 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 1154 | /* node number */ |
7e94cfcc NK |
1155 | c = strtoul(str, &tmp, 0); |
1156 | if (*tmp != ':') | |
fbe96f29 SE |
1157 | goto error; |
1158 | ||
7e94cfcc NK |
1159 | str = tmp + 1; |
1160 | mem_total = strtoull(str, &tmp, 0); | |
1161 | if (*tmp != ':') | |
fbe96f29 SE |
1162 | goto error; |
1163 | ||
7e94cfcc NK |
1164 | str = tmp + 1; |
1165 | mem_free = strtoull(str, &tmp, 0); | |
1166 | if (*tmp != ':') | |
fbe96f29 SE |
1167 | goto error; |
1168 | ||
fbe96f29 SE |
1169 | fprintf(fp, "# node%u meminfo : total = %"PRIu64" kB," |
1170 | " free = %"PRIu64" kB\n", | |
7e94cfcc | 1171 | c, mem_total, mem_free); |
fbe96f29 | 1172 | |
7e94cfcc | 1173 | str = tmp + 1; |
fbe96f29 | 1174 | fprintf(fp, "# node%u cpu list : %s\n", c, str); |
1234471e NK |
1175 | |
1176 | str += strlen(str) + 1; | |
fbe96f29 SE |
1177 | } |
1178 | return; | |
1179 | error: | |
1180 | fprintf(fp, "# numa topology : not available\n"); | |
1181 | } | |
1182 | ||
7e94cfcc | 1183 | static void print_cpuid(struct perf_header *ph, int fd __maybe_unused, FILE *fp) |
fbe96f29 | 1184 | { |
7e94cfcc | 1185 | fprintf(fp, "# cpuid : %s\n", ph->env.cpuid); |
fbe96f29 SE |
1186 | } |
1187 | ||
1d037ca1 | 1188 | static void print_branch_stack(struct perf_header *ph __maybe_unused, |
7e94cfcc | 1189 | int fd __maybe_unused, FILE *fp) |
330aa675 SE |
1190 | { |
1191 | fprintf(fp, "# contains samples with branch stack\n"); | |
1192 | } | |
1193 | ||
4025ea40 AH |
1194 | static void print_auxtrace(struct perf_header *ph __maybe_unused, |
1195 | int fd __maybe_unused, FILE *fp) | |
1196 | { | |
1197 | fprintf(fp, "# contains AUX area data (e.g. instruction trace)\n"); | |
1198 | } | |
1199 | ||
7e94cfcc NK |
1200 | static void print_pmu_mappings(struct perf_header *ph, int fd __maybe_unused, |
1201 | FILE *fp) | |
50a9667c RR |
1202 | { |
1203 | const char *delimiter = "# pmu mappings: "; | |
7e94cfcc | 1204 | char *str, *tmp; |
50a9667c RR |
1205 | u32 pmu_num; |
1206 | u32 type; | |
1207 | ||
7e94cfcc | 1208 | pmu_num = ph->env.nr_pmu_mappings; |
50a9667c RR |
1209 | if (!pmu_num) { |
1210 | fprintf(fp, "# pmu mappings: not available\n"); | |
1211 | return; | |
1212 | } | |
1213 | ||
7e94cfcc NK |
1214 | str = ph->env.pmu_mappings; |
1215 | ||
50a9667c | 1216 | while (pmu_num) { |
7e94cfcc NK |
1217 | type = strtoul(str, &tmp, 0); |
1218 | if (*tmp != ':') | |
1219 | goto error; | |
1220 | ||
1221 | str = tmp + 1; | |
1222 | fprintf(fp, "%s%s = %" PRIu32, delimiter, str, type); | |
be4a2ded | 1223 | |
50a9667c | 1224 | delimiter = ", "; |
7e94cfcc NK |
1225 | str += strlen(str) + 1; |
1226 | pmu_num--; | |
50a9667c RR |
1227 | } |
1228 | ||
1229 | fprintf(fp, "\n"); | |
1230 | ||
1231 | if (!pmu_num) | |
1232 | return; | |
1233 | error: | |
1234 | fprintf(fp, "# pmu mappings: unable to read\n"); | |
1235 | } | |
1236 | ||
a8bb559b NK |
1237 | static void print_group_desc(struct perf_header *ph, int fd __maybe_unused, |
1238 | FILE *fp) | |
1239 | { | |
1240 | struct perf_session *session; | |
1241 | struct perf_evsel *evsel; | |
1242 | u32 nr = 0; | |
1243 | ||
1244 | session = container_of(ph, struct perf_session, header); | |
1245 | ||
0050f7aa | 1246 | evlist__for_each(session->evlist, evsel) { |
a8bb559b NK |
1247 | if (perf_evsel__is_group_leader(evsel) && |
1248 | evsel->nr_members > 1) { | |
1249 | fprintf(fp, "# group: %s{%s", evsel->group_name ?: "", | |
1250 | perf_evsel__name(evsel)); | |
1251 | ||
1252 | nr = evsel->nr_members - 1; | |
1253 | } else if (nr) { | |
1254 | fprintf(fp, ",%s", perf_evsel__name(evsel)); | |
1255 | ||
1256 | if (--nr == 0) | |
1257 | fprintf(fp, "}\n"); | |
1258 | } | |
1259 | } | |
1260 | } | |
1261 | ||
08d95bd2 RR |
1262 | static int __event_process_build_id(struct build_id_event *bev, |
1263 | char *filename, | |
1264 | struct perf_session *session) | |
1265 | { | |
1266 | int err = -1; | |
08d95bd2 | 1267 | struct machine *machine; |
1f121b03 | 1268 | u16 cpumode; |
08d95bd2 RR |
1269 | struct dso *dso; |
1270 | enum dso_kernel_type dso_type; | |
1271 | ||
1272 | machine = perf_session__findnew_machine(session, bev->pid); | |
1273 | if (!machine) | |
1274 | goto out; | |
1275 | ||
1f121b03 | 1276 | cpumode = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
08d95bd2 | 1277 | |
1f121b03 | 1278 | switch (cpumode) { |
08d95bd2 RR |
1279 | case PERF_RECORD_MISC_KERNEL: |
1280 | dso_type = DSO_TYPE_KERNEL; | |
08d95bd2 RR |
1281 | break; |
1282 | case PERF_RECORD_MISC_GUEST_KERNEL: | |
1283 | dso_type = DSO_TYPE_GUEST_KERNEL; | |
08d95bd2 RR |
1284 | break; |
1285 | case PERF_RECORD_MISC_USER: | |
1286 | case PERF_RECORD_MISC_GUEST_USER: | |
1287 | dso_type = DSO_TYPE_USER; | |
08d95bd2 RR |
1288 | break; |
1289 | default: | |
1290 | goto out; | |
1291 | } | |
1292 | ||
aa7cc2ae | 1293 | dso = machine__findnew_dso(machine, filename); |
08d95bd2 RR |
1294 | if (dso != NULL) { |
1295 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; | |
1296 | ||
1297 | dso__set_build_id(dso, &bev->build_id); | |
1298 | ||
1f121b03 | 1299 | if (!is_kernel_module(filename, cpumode)) |
08d95bd2 RR |
1300 | dso->kernel = dso_type; |
1301 | ||
1302 | build_id__sprintf(dso->build_id, sizeof(dso->build_id), | |
1303 | sbuild_id); | |
1304 | pr_debug("build id event received for %s: %s\n", | |
1305 | dso->long_name, sbuild_id); | |
d3a7c489 | 1306 | dso__put(dso); |
08d95bd2 RR |
1307 | } |
1308 | ||
1309 | err = 0; | |
1310 | out: | |
1311 | return err; | |
1312 | } | |
1313 | ||
1314 | static int perf_header__read_build_ids_abi_quirk(struct perf_header *header, | |
1315 | int input, u64 offset, u64 size) | |
1316 | { | |
1317 | struct perf_session *session = container_of(header, struct perf_session, header); | |
1318 | struct { | |
1319 | struct perf_event_header header; | |
9ac3e487 | 1320 | u8 build_id[PERF_ALIGN(BUILD_ID_SIZE, sizeof(u64))]; |
08d95bd2 RR |
1321 | char filename[0]; |
1322 | } old_bev; | |
1323 | struct build_id_event bev; | |
1324 | char filename[PATH_MAX]; | |
1325 | u64 limit = offset + size; | |
1326 | ||
1327 | while (offset < limit) { | |
1328 | ssize_t len; | |
1329 | ||
5323f60c | 1330 | if (readn(input, &old_bev, sizeof(old_bev)) != sizeof(old_bev)) |
08d95bd2 RR |
1331 | return -1; |
1332 | ||
1333 | if (header->needs_swap) | |
1334 | perf_event_header__bswap(&old_bev.header); | |
1335 | ||
1336 | len = old_bev.header.size - sizeof(old_bev); | |
5323f60c | 1337 | if (readn(input, filename, len) != len) |
08d95bd2 RR |
1338 | return -1; |
1339 | ||
1340 | bev.header = old_bev.header; | |
1341 | ||
1342 | /* | |
1343 | * As the pid is the missing value, we need to fill | |
1344 | * it properly. The header.misc value give us nice hint. | |
1345 | */ | |
1346 | bev.pid = HOST_KERNEL_ID; | |
1347 | if (bev.header.misc == PERF_RECORD_MISC_GUEST_USER || | |
1348 | bev.header.misc == PERF_RECORD_MISC_GUEST_KERNEL) | |
1349 | bev.pid = DEFAULT_GUEST_KERNEL_ID; | |
1350 | ||
1351 | memcpy(bev.build_id, old_bev.build_id, sizeof(bev.build_id)); | |
1352 | __event_process_build_id(&bev, filename, session); | |
1353 | ||
1354 | offset += bev.header.size; | |
1355 | } | |
1356 | ||
1357 | return 0; | |
1358 | } | |
1359 | ||
1360 | static int perf_header__read_build_ids(struct perf_header *header, | |
1361 | int input, u64 offset, u64 size) | |
1362 | { | |
1363 | struct perf_session *session = container_of(header, struct perf_session, header); | |
1364 | struct build_id_event bev; | |
1365 | char filename[PATH_MAX]; | |
1366 | u64 limit = offset + size, orig_offset = offset; | |
1367 | int err = -1; | |
1368 | ||
1369 | while (offset < limit) { | |
1370 | ssize_t len; | |
1371 | ||
5323f60c | 1372 | if (readn(input, &bev, sizeof(bev)) != sizeof(bev)) |
08d95bd2 RR |
1373 | goto out; |
1374 | ||
1375 | if (header->needs_swap) | |
1376 | perf_event_header__bswap(&bev.header); | |
1377 | ||
1378 | len = bev.header.size - sizeof(bev); | |
5323f60c | 1379 | if (readn(input, filename, len) != len) |
08d95bd2 RR |
1380 | goto out; |
1381 | /* | |
1382 | * The a1645ce1 changeset: | |
1383 | * | |
1384 | * "perf: 'perf kvm' tool for monitoring guest performance from host" | |
1385 | * | |
1386 | * Added a field to struct build_id_event that broke the file | |
1387 | * format. | |
1388 | * | |
1389 | * Since the kernel build-id is the first entry, process the | |
1390 | * table using the old format if the well known | |
1391 | * '[kernel.kallsyms]' string for the kernel build-id has the | |
1392 | * first 4 characters chopped off (where the pid_t sits). | |
1393 | */ | |
1394 | if (memcmp(filename, "nel.kallsyms]", 13) == 0) { | |
1395 | if (lseek(input, orig_offset, SEEK_SET) == (off_t)-1) | |
1396 | return -1; | |
1397 | return perf_header__read_build_ids_abi_quirk(header, input, offset, size); | |
1398 | } | |
1399 | ||
1400 | __event_process_build_id(&bev, filename, session); | |
1401 | ||
1402 | offset += bev.header.size; | |
1403 | } | |
1404 | err = 0; | |
1405 | out: | |
1406 | return err; | |
1407 | } | |
1408 | ||
3d7eb86b NK |
1409 | static int process_tracing_data(struct perf_file_section *section __maybe_unused, |
1410 | struct perf_header *ph __maybe_unused, | |
1411 | int fd, void *data) | |
f1c67db7 | 1412 | { |
3dce2ce3 NK |
1413 | ssize_t ret = trace_report(fd, data, false); |
1414 | return ret < 0 ? -1 : 0; | |
f1c67db7 RR |
1415 | } |
1416 | ||
1417 | static int process_build_id(struct perf_file_section *section, | |
3d7eb86b | 1418 | struct perf_header *ph, int fd, |
1d037ca1 | 1419 | void *data __maybe_unused) |
f1c67db7 RR |
1420 | { |
1421 | if (perf_header__read_build_ids(ph, fd, section->offset, section->size)) | |
1422 | pr_debug("Failed to read buildids, continuing...\n"); | |
1423 | return 0; | |
1424 | } | |
1425 | ||
a1ae5655 | 1426 | static int process_hostname(struct perf_file_section *section __maybe_unused, |
3d7eb86b NK |
1427 | struct perf_header *ph, int fd, |
1428 | void *data __maybe_unused) | |
a1ae5655 NK |
1429 | { |
1430 | ph->env.hostname = do_read_string(fd, ph); | |
1431 | return ph->env.hostname ? 0 : -ENOMEM; | |
1432 | } | |
1433 | ||
1434 | static int process_osrelease(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1435 | struct perf_header *ph, int fd, |
1436 | void *data __maybe_unused) | |
a1ae5655 NK |
1437 | { |
1438 | ph->env.os_release = do_read_string(fd, ph); | |
1439 | return ph->env.os_release ? 0 : -ENOMEM; | |
1440 | } | |
1441 | ||
1442 | static int process_version(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1443 | struct perf_header *ph, int fd, |
1444 | void *data __maybe_unused) | |
a1ae5655 NK |
1445 | { |
1446 | ph->env.version = do_read_string(fd, ph); | |
1447 | return ph->env.version ? 0 : -ENOMEM; | |
1448 | } | |
1449 | ||
1450 | static int process_arch(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1451 | struct perf_header *ph, int fd, |
1452 | void *data __maybe_unused) | |
a1ae5655 NK |
1453 | { |
1454 | ph->env.arch = do_read_string(fd, ph); | |
1455 | return ph->env.arch ? 0 : -ENOMEM; | |
1456 | } | |
1457 | ||
1458 | static int process_nrcpus(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1459 | struct perf_header *ph, int fd, |
1460 | void *data __maybe_unused) | |
a1ae5655 | 1461 | { |
727ebd54 | 1462 | ssize_t ret; |
a1ae5655 NK |
1463 | u32 nr; |
1464 | ||
5323f60c | 1465 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1466 | if (ret != sizeof(nr)) |
1467 | return -1; | |
1468 | ||
1469 | if (ph->needs_swap) | |
1470 | nr = bswap_32(nr); | |
1471 | ||
1472 | ph->env.nr_cpus_online = nr; | |
1473 | ||
5323f60c | 1474 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1475 | if (ret != sizeof(nr)) |
1476 | return -1; | |
1477 | ||
1478 | if (ph->needs_swap) | |
1479 | nr = bswap_32(nr); | |
1480 | ||
1481 | ph->env.nr_cpus_avail = nr; | |
1482 | return 0; | |
1483 | } | |
1484 | ||
1485 | static int process_cpudesc(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1486 | struct perf_header *ph, int fd, |
1487 | void *data __maybe_unused) | |
a1ae5655 NK |
1488 | { |
1489 | ph->env.cpu_desc = do_read_string(fd, ph); | |
1490 | return ph->env.cpu_desc ? 0 : -ENOMEM; | |
1491 | } | |
1492 | ||
1493 | static int process_cpuid(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1494 | struct perf_header *ph, int fd, |
1495 | void *data __maybe_unused) | |
a1ae5655 NK |
1496 | { |
1497 | ph->env.cpuid = do_read_string(fd, ph); | |
1498 | return ph->env.cpuid ? 0 : -ENOMEM; | |
1499 | } | |
1500 | ||
1501 | static int process_total_mem(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1502 | struct perf_header *ph, int fd, |
1503 | void *data __maybe_unused) | |
a1ae5655 NK |
1504 | { |
1505 | uint64_t mem; | |
727ebd54 | 1506 | ssize_t ret; |
a1ae5655 | 1507 | |
5323f60c | 1508 | ret = readn(fd, &mem, sizeof(mem)); |
a1ae5655 NK |
1509 | if (ret != sizeof(mem)) |
1510 | return -1; | |
1511 | ||
1512 | if (ph->needs_swap) | |
1513 | mem = bswap_64(mem); | |
1514 | ||
1515 | ph->env.total_mem = mem; | |
1516 | return 0; | |
1517 | } | |
1518 | ||
7c2f7afd RR |
1519 | static struct perf_evsel * |
1520 | perf_evlist__find_by_index(struct perf_evlist *evlist, int idx) | |
1521 | { | |
1522 | struct perf_evsel *evsel; | |
1523 | ||
0050f7aa | 1524 | evlist__for_each(evlist, evsel) { |
7c2f7afd RR |
1525 | if (evsel->idx == idx) |
1526 | return evsel; | |
1527 | } | |
1528 | ||
1529 | return NULL; | |
1530 | } | |
1531 | ||
1532 | static void | |
3d7eb86b NK |
1533 | perf_evlist__set_event_name(struct perf_evlist *evlist, |
1534 | struct perf_evsel *event) | |
7c2f7afd RR |
1535 | { |
1536 | struct perf_evsel *evsel; | |
1537 | ||
1538 | if (!event->name) | |
1539 | return; | |
1540 | ||
1541 | evsel = perf_evlist__find_by_index(evlist, event->idx); | |
1542 | if (!evsel) | |
1543 | return; | |
1544 | ||
1545 | if (evsel->name) | |
1546 | return; | |
1547 | ||
1548 | evsel->name = strdup(event->name); | |
1549 | } | |
1550 | ||
1551 | static int | |
1d037ca1 | 1552 | process_event_desc(struct perf_file_section *section __maybe_unused, |
3d7eb86b | 1553 | struct perf_header *header, int fd, |
1d037ca1 | 1554 | void *data __maybe_unused) |
7c2f7afd | 1555 | { |
3d7eb86b | 1556 | struct perf_session *session; |
7c2f7afd RR |
1557 | struct perf_evsel *evsel, *events = read_event_desc(header, fd); |
1558 | ||
1559 | if (!events) | |
1560 | return 0; | |
1561 | ||
3d7eb86b | 1562 | session = container_of(header, struct perf_session, header); |
7c2f7afd RR |
1563 | for (evsel = events; evsel->attr.size; evsel++) |
1564 | perf_evlist__set_event_name(session->evlist, evsel); | |
1565 | ||
1566 | free_event_desc(events); | |
1567 | ||
1568 | return 0; | |
1569 | } | |
1570 | ||
768dd3f3 | 1571 | static int process_cmdline(struct perf_file_section *section, |
3d7eb86b NK |
1572 | struct perf_header *ph, int fd, |
1573 | void *data __maybe_unused) | |
a1ae5655 | 1574 | { |
727ebd54 | 1575 | ssize_t ret; |
768dd3f3 JO |
1576 | char *str, *cmdline = NULL, **argv = NULL; |
1577 | u32 nr, i, len = 0; | |
a1ae5655 | 1578 | |
5323f60c | 1579 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1580 | if (ret != sizeof(nr)) |
1581 | return -1; | |
1582 | ||
1583 | if (ph->needs_swap) | |
1584 | nr = bswap_32(nr); | |
1585 | ||
1586 | ph->env.nr_cmdline = nr; | |
768dd3f3 JO |
1587 | |
1588 | cmdline = zalloc(section->size + nr + 1); | |
1589 | if (!cmdline) | |
1590 | return -1; | |
1591 | ||
1592 | argv = zalloc(sizeof(char *) * (nr + 1)); | |
1593 | if (!argv) | |
1594 | goto error; | |
a1ae5655 NK |
1595 | |
1596 | for (i = 0; i < nr; i++) { | |
1597 | str = do_read_string(fd, ph); | |
1598 | if (!str) | |
1599 | goto error; | |
1600 | ||
768dd3f3 JO |
1601 | argv[i] = cmdline + len; |
1602 | memcpy(argv[i], str, strlen(str) + 1); | |
1603 | len += strlen(str) + 1; | |
a1ae5655 NK |
1604 | free(str); |
1605 | } | |
768dd3f3 JO |
1606 | ph->env.cmdline = cmdline; |
1607 | ph->env.cmdline_argv = (const char **) argv; | |
a1ae5655 NK |
1608 | return 0; |
1609 | ||
1610 | error: | |
768dd3f3 JO |
1611 | free(argv); |
1612 | free(cmdline); | |
a1ae5655 NK |
1613 | return -1; |
1614 | } | |
1615 | ||
2bb00d2f | 1616 | static int process_cpu_topology(struct perf_file_section *section, |
3d7eb86b NK |
1617 | struct perf_header *ph, int fd, |
1618 | void *data __maybe_unused) | |
a1ae5655 | 1619 | { |
727ebd54 | 1620 | ssize_t ret; |
a1ae5655 NK |
1621 | u32 nr, i; |
1622 | char *str; | |
1623 | struct strbuf sb; | |
2bb00d2f KL |
1624 | int cpu_nr = ph->env.nr_cpus_online; |
1625 | u64 size = 0; | |
1626 | ||
1627 | ph->env.cpu = calloc(cpu_nr, sizeof(*ph->env.cpu)); | |
1628 | if (!ph->env.cpu) | |
1629 | return -1; | |
a1ae5655 | 1630 | |
5323f60c | 1631 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 | 1632 | if (ret != sizeof(nr)) |
2bb00d2f | 1633 | goto free_cpu; |
a1ae5655 NK |
1634 | |
1635 | if (ph->needs_swap) | |
1636 | nr = bswap_32(nr); | |
1637 | ||
1638 | ph->env.nr_sibling_cores = nr; | |
2bb00d2f | 1639 | size += sizeof(u32); |
a1ae5655 NK |
1640 | strbuf_init(&sb, 128); |
1641 | ||
1642 | for (i = 0; i < nr; i++) { | |
1643 | str = do_read_string(fd, ph); | |
1644 | if (!str) | |
1645 | goto error; | |
1646 | ||
1647 | /* include a NULL character at the end */ | |
1648 | strbuf_add(&sb, str, strlen(str) + 1); | |
2bb00d2f | 1649 | size += string_size(str); |
a1ae5655 NK |
1650 | free(str); |
1651 | } | |
1652 | ph->env.sibling_cores = strbuf_detach(&sb, NULL); | |
1653 | ||
5323f60c | 1654 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1655 | if (ret != sizeof(nr)) |
1656 | return -1; | |
1657 | ||
1658 | if (ph->needs_swap) | |
1659 | nr = bswap_32(nr); | |
1660 | ||
1661 | ph->env.nr_sibling_threads = nr; | |
2bb00d2f | 1662 | size += sizeof(u32); |
a1ae5655 NK |
1663 | |
1664 | for (i = 0; i < nr; i++) { | |
1665 | str = do_read_string(fd, ph); | |
1666 | if (!str) | |
1667 | goto error; | |
1668 | ||
1669 | /* include a NULL character at the end */ | |
1670 | strbuf_add(&sb, str, strlen(str) + 1); | |
2bb00d2f | 1671 | size += string_size(str); |
a1ae5655 NK |
1672 | free(str); |
1673 | } | |
1674 | ph->env.sibling_threads = strbuf_detach(&sb, NULL); | |
2bb00d2f KL |
1675 | |
1676 | /* | |
1677 | * The header may be from old perf, | |
1678 | * which doesn't include core id and socket id information. | |
1679 | */ | |
1680 | if (section->size <= size) { | |
1681 | zfree(&ph->env.cpu); | |
1682 | return 0; | |
1683 | } | |
1684 | ||
1685 | for (i = 0; i < (u32)cpu_nr; i++) { | |
1686 | ret = readn(fd, &nr, sizeof(nr)); | |
1687 | if (ret != sizeof(nr)) | |
1688 | goto free_cpu; | |
1689 | ||
1690 | if (ph->needs_swap) | |
1691 | nr = bswap_32(nr); | |
1692 | ||
1693 | if (nr > (u32)cpu_nr) { | |
1694 | pr_debug("core_id number is too big." | |
1695 | "You may need to upgrade the perf tool.\n"); | |
1696 | goto free_cpu; | |
1697 | } | |
1698 | ph->env.cpu[i].core_id = nr; | |
1699 | ||
1700 | ret = readn(fd, &nr, sizeof(nr)); | |
1701 | if (ret != sizeof(nr)) | |
1702 | goto free_cpu; | |
1703 | ||
1704 | if (ph->needs_swap) | |
1705 | nr = bswap_32(nr); | |
1706 | ||
1707 | if (nr > (u32)cpu_nr) { | |
1708 | pr_debug("socket_id number is too big." | |
1709 | "You may need to upgrade the perf tool.\n"); | |
1710 | goto free_cpu; | |
1711 | } | |
1712 | ||
1713 | ph->env.cpu[i].socket_id = nr; | |
1714 | } | |
1715 | ||
a1ae5655 NK |
1716 | return 0; |
1717 | ||
1718 | error: | |
1719 | strbuf_release(&sb); | |
2bb00d2f KL |
1720 | free_cpu: |
1721 | zfree(&ph->env.cpu); | |
a1ae5655 NK |
1722 | return -1; |
1723 | } | |
1724 | ||
1725 | static int process_numa_topology(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1726 | struct perf_header *ph, int fd, |
1727 | void *data __maybe_unused) | |
a1ae5655 | 1728 | { |
727ebd54 | 1729 | ssize_t ret; |
a1ae5655 NK |
1730 | u32 nr, node, i; |
1731 | char *str; | |
1732 | uint64_t mem_total, mem_free; | |
1733 | struct strbuf sb; | |
1734 | ||
1735 | /* nr nodes */ | |
5323f60c | 1736 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1737 | if (ret != sizeof(nr)) |
1738 | goto error; | |
1739 | ||
1740 | if (ph->needs_swap) | |
1741 | nr = bswap_32(nr); | |
1742 | ||
1743 | ph->env.nr_numa_nodes = nr; | |
1744 | strbuf_init(&sb, 256); | |
1745 | ||
1746 | for (i = 0; i < nr; i++) { | |
1747 | /* node number */ | |
5323f60c | 1748 | ret = readn(fd, &node, sizeof(node)); |
a1ae5655 NK |
1749 | if (ret != sizeof(node)) |
1750 | goto error; | |
1751 | ||
5323f60c | 1752 | ret = readn(fd, &mem_total, sizeof(u64)); |
a1ae5655 NK |
1753 | if (ret != sizeof(u64)) |
1754 | goto error; | |
1755 | ||
5323f60c | 1756 | ret = readn(fd, &mem_free, sizeof(u64)); |
a1ae5655 NK |
1757 | if (ret != sizeof(u64)) |
1758 | goto error; | |
1759 | ||
1760 | if (ph->needs_swap) { | |
1761 | node = bswap_32(node); | |
1762 | mem_total = bswap_64(mem_total); | |
1763 | mem_free = bswap_64(mem_free); | |
1764 | } | |
1765 | ||
1766 | strbuf_addf(&sb, "%u:%"PRIu64":%"PRIu64":", | |
1767 | node, mem_total, mem_free); | |
1768 | ||
1769 | str = do_read_string(fd, ph); | |
1770 | if (!str) | |
1771 | goto error; | |
1772 | ||
1773 | /* include a NULL character at the end */ | |
1774 | strbuf_add(&sb, str, strlen(str) + 1); | |
1775 | free(str); | |
1776 | } | |
1777 | ph->env.numa_nodes = strbuf_detach(&sb, NULL); | |
1778 | return 0; | |
1779 | ||
1780 | error: | |
1781 | strbuf_release(&sb); | |
1782 | return -1; | |
1783 | } | |
1784 | ||
1785 | static int process_pmu_mappings(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1786 | struct perf_header *ph, int fd, |
1787 | void *data __maybe_unused) | |
a1ae5655 | 1788 | { |
727ebd54 | 1789 | ssize_t ret; |
a1ae5655 NK |
1790 | char *name; |
1791 | u32 pmu_num; | |
1792 | u32 type; | |
1793 | struct strbuf sb; | |
1794 | ||
5323f60c | 1795 | ret = readn(fd, &pmu_num, sizeof(pmu_num)); |
a1ae5655 NK |
1796 | if (ret != sizeof(pmu_num)) |
1797 | return -1; | |
1798 | ||
1799 | if (ph->needs_swap) | |
1800 | pmu_num = bswap_32(pmu_num); | |
1801 | ||
1802 | if (!pmu_num) { | |
1803 | pr_debug("pmu mappings not available\n"); | |
1804 | return 0; | |
1805 | } | |
1806 | ||
1807 | ph->env.nr_pmu_mappings = pmu_num; | |
1808 | strbuf_init(&sb, 128); | |
1809 | ||
1810 | while (pmu_num) { | |
5323f60c | 1811 | if (readn(fd, &type, sizeof(type)) != sizeof(type)) |
a1ae5655 NK |
1812 | goto error; |
1813 | if (ph->needs_swap) | |
1814 | type = bswap_32(type); | |
1815 | ||
1816 | name = do_read_string(fd, ph); | |
1817 | if (!name) | |
1818 | goto error; | |
1819 | ||
1820 | strbuf_addf(&sb, "%u:%s", type, name); | |
1821 | /* include a NULL character at the end */ | |
1822 | strbuf_add(&sb, "", 1); | |
1823 | ||
1824 | free(name); | |
1825 | pmu_num--; | |
1826 | } | |
1827 | ph->env.pmu_mappings = strbuf_detach(&sb, NULL); | |
1828 | return 0; | |
1829 | ||
1830 | error: | |
1831 | strbuf_release(&sb); | |
1832 | return -1; | |
1833 | } | |
1834 | ||
a8bb559b NK |
1835 | static int process_group_desc(struct perf_file_section *section __maybe_unused, |
1836 | struct perf_header *ph, int fd, | |
1837 | void *data __maybe_unused) | |
1838 | { | |
1839 | size_t ret = -1; | |
1840 | u32 i, nr, nr_groups; | |
1841 | struct perf_session *session; | |
1842 | struct perf_evsel *evsel, *leader = NULL; | |
1843 | struct group_desc { | |
1844 | char *name; | |
1845 | u32 leader_idx; | |
1846 | u32 nr_members; | |
1847 | } *desc; | |
1848 | ||
1849 | if (readn(fd, &nr_groups, sizeof(nr_groups)) != sizeof(nr_groups)) | |
1850 | return -1; | |
1851 | ||
1852 | if (ph->needs_swap) | |
1853 | nr_groups = bswap_32(nr_groups); | |
1854 | ||
1855 | ph->env.nr_groups = nr_groups; | |
1856 | if (!nr_groups) { | |
1857 | pr_debug("group desc not available\n"); | |
1858 | return 0; | |
1859 | } | |
1860 | ||
1861 | desc = calloc(nr_groups, sizeof(*desc)); | |
1862 | if (!desc) | |
1863 | return -1; | |
1864 | ||
1865 | for (i = 0; i < nr_groups; i++) { | |
1866 | desc[i].name = do_read_string(fd, ph); | |
1867 | if (!desc[i].name) | |
1868 | goto out_free; | |
1869 | ||
1870 | if (readn(fd, &desc[i].leader_idx, sizeof(u32)) != sizeof(u32)) | |
1871 | goto out_free; | |
1872 | ||
1873 | if (readn(fd, &desc[i].nr_members, sizeof(u32)) != sizeof(u32)) | |
1874 | goto out_free; | |
1875 | ||
1876 | if (ph->needs_swap) { | |
1877 | desc[i].leader_idx = bswap_32(desc[i].leader_idx); | |
1878 | desc[i].nr_members = bswap_32(desc[i].nr_members); | |
1879 | } | |
1880 | } | |
1881 | ||
1882 | /* | |
1883 | * Rebuild group relationship based on the group_desc | |
1884 | */ | |
1885 | session = container_of(ph, struct perf_session, header); | |
1886 | session->evlist->nr_groups = nr_groups; | |
1887 | ||
1888 | i = nr = 0; | |
0050f7aa | 1889 | evlist__for_each(session->evlist, evsel) { |
a8bb559b NK |
1890 | if (evsel->idx == (int) desc[i].leader_idx) { |
1891 | evsel->leader = evsel; | |
1892 | /* {anon_group} is a dummy name */ | |
210e812f | 1893 | if (strcmp(desc[i].name, "{anon_group}")) { |
a8bb559b | 1894 | evsel->group_name = desc[i].name; |
210e812f NK |
1895 | desc[i].name = NULL; |
1896 | } | |
a8bb559b NK |
1897 | evsel->nr_members = desc[i].nr_members; |
1898 | ||
1899 | if (i >= nr_groups || nr > 0) { | |
1900 | pr_debug("invalid group desc\n"); | |
1901 | goto out_free; | |
1902 | } | |
1903 | ||
1904 | leader = evsel; | |
1905 | nr = evsel->nr_members - 1; | |
1906 | i++; | |
1907 | } else if (nr) { | |
1908 | /* This is a group member */ | |
1909 | evsel->leader = leader; | |
1910 | ||
1911 | nr--; | |
1912 | } | |
1913 | } | |
1914 | ||
1915 | if (i != nr_groups || nr != 0) { | |
1916 | pr_debug("invalid group desc\n"); | |
1917 | goto out_free; | |
1918 | } | |
1919 | ||
1920 | ret = 0; | |
1921 | out_free: | |
50a2740b | 1922 | for (i = 0; i < nr_groups; i++) |
74cf249d | 1923 | zfree(&desc[i].name); |
a8bb559b NK |
1924 | free(desc); |
1925 | ||
1926 | return ret; | |
1927 | } | |
1928 | ||
99fa2984 AH |
1929 | static int process_auxtrace(struct perf_file_section *section, |
1930 | struct perf_header *ph, int fd, | |
1931 | void *data __maybe_unused) | |
1932 | { | |
1933 | struct perf_session *session; | |
1934 | int err; | |
1935 | ||
1936 | session = container_of(ph, struct perf_session, header); | |
1937 | ||
1938 | err = auxtrace_index__process(fd, section->size, session, | |
1939 | ph->needs_swap); | |
1940 | if (err < 0) | |
1941 | pr_err("Failed to process auxtrace index\n"); | |
1942 | return err; | |
1943 | } | |
1944 | ||
fbe96f29 SE |
1945 | struct feature_ops { |
1946 | int (*write)(int fd, struct perf_header *h, struct perf_evlist *evlist); | |
1947 | void (*print)(struct perf_header *h, int fd, FILE *fp); | |
f1c67db7 | 1948 | int (*process)(struct perf_file_section *section, |
3d7eb86b | 1949 | struct perf_header *h, int fd, void *data); |
fbe96f29 SE |
1950 | const char *name; |
1951 | bool full_only; | |
1952 | }; | |
1953 | ||
8cdfa78a RR |
1954 | #define FEAT_OPA(n, func) \ |
1955 | [n] = { .name = #n, .write = write_##func, .print = print_##func } | |
f1c67db7 RR |
1956 | #define FEAT_OPP(n, func) \ |
1957 | [n] = { .name = #n, .write = write_##func, .print = print_##func, \ | |
1958 | .process = process_##func } | |
8cdfa78a | 1959 | #define FEAT_OPF(n, func) \ |
f1c67db7 | 1960 | [n] = { .name = #n, .write = write_##func, .print = print_##func, \ |
a1ae5655 | 1961 | .process = process_##func, .full_only = true } |
8cdfa78a RR |
1962 | |
1963 | /* feature_ops not implemented: */ | |
2eeaaa09 SE |
1964 | #define print_tracing_data NULL |
1965 | #define print_build_id NULL | |
fbe96f29 SE |
1966 | |
1967 | static const struct feature_ops feat_ops[HEADER_LAST_FEATURE] = { | |
2eeaaa09 | 1968 | FEAT_OPP(HEADER_TRACING_DATA, tracing_data), |
f1c67db7 | 1969 | FEAT_OPP(HEADER_BUILD_ID, build_id), |
a1ae5655 NK |
1970 | FEAT_OPP(HEADER_HOSTNAME, hostname), |
1971 | FEAT_OPP(HEADER_OSRELEASE, osrelease), | |
1972 | FEAT_OPP(HEADER_VERSION, version), | |
1973 | FEAT_OPP(HEADER_ARCH, arch), | |
1974 | FEAT_OPP(HEADER_NRCPUS, nrcpus), | |
1975 | FEAT_OPP(HEADER_CPUDESC, cpudesc), | |
37e9d750 | 1976 | FEAT_OPP(HEADER_CPUID, cpuid), |
a1ae5655 | 1977 | FEAT_OPP(HEADER_TOTAL_MEM, total_mem), |
7c2f7afd | 1978 | FEAT_OPP(HEADER_EVENT_DESC, event_desc), |
a1ae5655 | 1979 | FEAT_OPP(HEADER_CMDLINE, cmdline), |
8cdfa78a RR |
1980 | FEAT_OPF(HEADER_CPU_TOPOLOGY, cpu_topology), |
1981 | FEAT_OPF(HEADER_NUMA_TOPOLOGY, numa_topology), | |
330aa675 | 1982 | FEAT_OPA(HEADER_BRANCH_STACK, branch_stack), |
a1ae5655 | 1983 | FEAT_OPP(HEADER_PMU_MAPPINGS, pmu_mappings), |
a8bb559b | 1984 | FEAT_OPP(HEADER_GROUP_DESC, group_desc), |
99fa2984 | 1985 | FEAT_OPP(HEADER_AUXTRACE, auxtrace), |
fbe96f29 SE |
1986 | }; |
1987 | ||
1988 | struct header_print_data { | |
1989 | FILE *fp; | |
1990 | bool full; /* extended list of headers */ | |
1991 | }; | |
1992 | ||
1993 | static int perf_file_section__fprintf_info(struct perf_file_section *section, | |
1994 | struct perf_header *ph, | |
1995 | int feat, int fd, void *data) | |
1996 | { | |
1997 | struct header_print_data *hd = data; | |
1998 | ||
1999 | if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) { | |
2000 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " | |
2001 | "%d, continuing...\n", section->offset, feat); | |
2002 | return 0; | |
2003 | } | |
b1e5a9be | 2004 | if (feat >= HEADER_LAST_FEATURE) { |
fbe96f29 | 2005 | pr_warning("unknown feature %d\n", feat); |
f7a8a133 | 2006 | return 0; |
fbe96f29 SE |
2007 | } |
2008 | if (!feat_ops[feat].print) | |
2009 | return 0; | |
2010 | ||
2011 | if (!feat_ops[feat].full_only || hd->full) | |
2012 | feat_ops[feat].print(ph, fd, hd->fp); | |
2013 | else | |
2014 | fprintf(hd->fp, "# %s info available, use -I to display\n", | |
2015 | feat_ops[feat].name); | |
2016 | ||
2017 | return 0; | |
2018 | } | |
2019 | ||
2020 | int perf_header__fprintf_info(struct perf_session *session, FILE *fp, bool full) | |
2021 | { | |
2022 | struct header_print_data hd; | |
2023 | struct perf_header *header = &session->header; | |
cc9784bd | 2024 | int fd = perf_data_file__fd(session->file); |
fbe96f29 SE |
2025 | hd.fp = fp; |
2026 | hd.full = full; | |
2027 | ||
2028 | perf_header__process_sections(header, fd, &hd, | |
2029 | perf_file_section__fprintf_info); | |
2030 | return 0; | |
2031 | } | |
2032 | ||
fbe96f29 SE |
2033 | static int do_write_feat(int fd, struct perf_header *h, int type, |
2034 | struct perf_file_section **p, | |
2035 | struct perf_evlist *evlist) | |
2036 | { | |
2037 | int err; | |
2038 | int ret = 0; | |
2039 | ||
2040 | if (perf_header__has_feat(h, type)) { | |
b1e5a9be RR |
2041 | if (!feat_ops[type].write) |
2042 | return -1; | |
fbe96f29 SE |
2043 | |
2044 | (*p)->offset = lseek(fd, 0, SEEK_CUR); | |
2045 | ||
2046 | err = feat_ops[type].write(fd, h, evlist); | |
2047 | if (err < 0) { | |
2048 | pr_debug("failed to write feature %d\n", type); | |
2049 | ||
2050 | /* undo anything written */ | |
2051 | lseek(fd, (*p)->offset, SEEK_SET); | |
2052 | ||
2053 | return -1; | |
2054 | } | |
2055 | (*p)->size = lseek(fd, 0, SEEK_CUR) - (*p)->offset; | |
2056 | (*p)++; | |
2057 | } | |
2058 | return ret; | |
2059 | } | |
2060 | ||
1c0b04d1 | 2061 | static int perf_header__adds_write(struct perf_header *header, |
361c99a6 | 2062 | struct perf_evlist *evlist, int fd) |
2ba08250 | 2063 | { |
9e827dd0 | 2064 | int nr_sections; |
fbe96f29 | 2065 | struct perf_file_section *feat_sec, *p; |
9e827dd0 FW |
2066 | int sec_size; |
2067 | u64 sec_start; | |
b1e5a9be | 2068 | int feat; |
fbe96f29 | 2069 | int err; |
9e827dd0 | 2070 | |
1c0b04d1 | 2071 | nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS); |
9e827dd0 | 2072 | if (!nr_sections) |
d5eed904 | 2073 | return 0; |
9e827dd0 | 2074 | |
91b98804 | 2075 | feat_sec = p = calloc(nr_sections, sizeof(*feat_sec)); |
d5eed904 ACM |
2076 | if (feat_sec == NULL) |
2077 | return -ENOMEM; | |
9e827dd0 FW |
2078 | |
2079 | sec_size = sizeof(*feat_sec) * nr_sections; | |
2080 | ||
8d541e97 | 2081 | sec_start = header->feat_offset; |
f887f301 | 2082 | lseek(fd, sec_start + sec_size, SEEK_SET); |
2ba08250 | 2083 | |
b1e5a9be RR |
2084 | for_each_set_bit(feat, header->adds_features, HEADER_FEAT_BITS) { |
2085 | if (do_write_feat(fd, header, feat, &p, evlist)) | |
2086 | perf_header__clear_feat(header, feat); | |
2087 | } | |
9e827dd0 | 2088 | |
f887f301 | 2089 | lseek(fd, sec_start, SEEK_SET); |
fbe96f29 SE |
2090 | /* |
2091 | * may write more than needed due to dropped feature, but | |
2092 | * this is okay, reader will skip the mising entries | |
2093 | */ | |
d5eed904 ACM |
2094 | err = do_write(fd, feat_sec, sec_size); |
2095 | if (err < 0) | |
2096 | pr_debug("failed to write feature section\n"); | |
9e827dd0 | 2097 | free(feat_sec); |
d5eed904 | 2098 | return err; |
9e827dd0 | 2099 | } |
2ba08250 | 2100 | |
8dc58101 TZ |
2101 | int perf_header__write_pipe(int fd) |
2102 | { | |
2103 | struct perf_pipe_file_header f_header; | |
2104 | int err; | |
2105 | ||
2106 | f_header = (struct perf_pipe_file_header){ | |
2107 | .magic = PERF_MAGIC, | |
2108 | .size = sizeof(f_header), | |
2109 | }; | |
2110 | ||
2111 | err = do_write(fd, &f_header, sizeof(f_header)); | |
2112 | if (err < 0) { | |
2113 | pr_debug("failed to write perf pipe header\n"); | |
2114 | return err; | |
2115 | } | |
2116 | ||
2117 | return 0; | |
2118 | } | |
2119 | ||
a91e5431 ACM |
2120 | int perf_session__write_header(struct perf_session *session, |
2121 | struct perf_evlist *evlist, | |
2122 | int fd, bool at_exit) | |
7c6a1c65 PZ |
2123 | { |
2124 | struct perf_file_header f_header; | |
2125 | struct perf_file_attr f_attr; | |
1c0b04d1 | 2126 | struct perf_header *header = &session->header; |
563aecb2 | 2127 | struct perf_evsel *evsel; |
944d62ba | 2128 | u64 attr_offset; |
a91e5431 | 2129 | int err; |
7c6a1c65 PZ |
2130 | |
2131 | lseek(fd, sizeof(f_header), SEEK_SET); | |
2132 | ||
0050f7aa | 2133 | evlist__for_each(session->evlist, evsel) { |
6606f873 RR |
2134 | evsel->id_offset = lseek(fd, 0, SEEK_CUR); |
2135 | err = do_write(fd, evsel->id, evsel->ids * sizeof(u64)); | |
d5eed904 ACM |
2136 | if (err < 0) { |
2137 | pr_debug("failed to write perf header\n"); | |
2138 | return err; | |
2139 | } | |
7c6a1c65 PZ |
2140 | } |
2141 | ||
944d62ba | 2142 | attr_offset = lseek(fd, 0, SEEK_CUR); |
7c6a1c65 | 2143 | |
0050f7aa | 2144 | evlist__for_each(evlist, evsel) { |
7c6a1c65 | 2145 | f_attr = (struct perf_file_attr){ |
6606f873 | 2146 | .attr = evsel->attr, |
7c6a1c65 | 2147 | .ids = { |
6606f873 RR |
2148 | .offset = evsel->id_offset, |
2149 | .size = evsel->ids * sizeof(u64), | |
7c6a1c65 PZ |
2150 | } |
2151 | }; | |
d5eed904 ACM |
2152 | err = do_write(fd, &f_attr, sizeof(f_attr)); |
2153 | if (err < 0) { | |
2154 | pr_debug("failed to write perf header attribute\n"); | |
2155 | return err; | |
2156 | } | |
7c6a1c65 PZ |
2157 | } |
2158 | ||
d645c442 AH |
2159 | if (!header->data_offset) |
2160 | header->data_offset = lseek(fd, 0, SEEK_CUR); | |
8d541e97 | 2161 | header->feat_offset = header->data_offset + header->data_size; |
7c6a1c65 | 2162 | |
d5eed904 | 2163 | if (at_exit) { |
1c0b04d1 | 2164 | err = perf_header__adds_write(header, evlist, fd); |
d5eed904 ACM |
2165 | if (err < 0) |
2166 | return err; | |
2167 | } | |
9e827dd0 | 2168 | |
7c6a1c65 PZ |
2169 | f_header = (struct perf_file_header){ |
2170 | .magic = PERF_MAGIC, | |
2171 | .size = sizeof(f_header), | |
2172 | .attr_size = sizeof(f_attr), | |
2173 | .attrs = { | |
944d62ba | 2174 | .offset = attr_offset, |
a91e5431 | 2175 | .size = evlist->nr_entries * sizeof(f_attr), |
7c6a1c65 PZ |
2176 | }, |
2177 | .data = { | |
1c0b04d1 ACM |
2178 | .offset = header->data_offset, |
2179 | .size = header->data_size, | |
7c6a1c65 | 2180 | }, |
44b3c578 | 2181 | /* event_types is ignored, store zeros */ |
7c6a1c65 PZ |
2182 | }; |
2183 | ||
1c0b04d1 | 2184 | memcpy(&f_header.adds_features, &header->adds_features, sizeof(header->adds_features)); |
2ba08250 | 2185 | |
7c6a1c65 | 2186 | lseek(fd, 0, SEEK_SET); |
d5eed904 ACM |
2187 | err = do_write(fd, &f_header, sizeof(f_header)); |
2188 | if (err < 0) { | |
2189 | pr_debug("failed to write perf header\n"); | |
2190 | return err; | |
2191 | } | |
1c0b04d1 | 2192 | lseek(fd, header->data_offset + header->data_size, SEEK_SET); |
7c6a1c65 | 2193 | |
d5eed904 | 2194 | return 0; |
7c6a1c65 PZ |
2195 | } |
2196 | ||
1c0b04d1 | 2197 | static int perf_header__getbuffer64(struct perf_header *header, |
ba21594c ACM |
2198 | int fd, void *buf, size_t size) |
2199 | { | |
1e7972cc | 2200 | if (readn(fd, buf, size) <= 0) |
ba21594c ACM |
2201 | return -1; |
2202 | ||
1c0b04d1 | 2203 | if (header->needs_swap) |
ba21594c ACM |
2204 | mem_bswap_64(buf, size); |
2205 | ||
2206 | return 0; | |
2207 | } | |
2208 | ||
1c0b04d1 | 2209 | int perf_header__process_sections(struct perf_header *header, int fd, |
fbe96f29 | 2210 | void *data, |
1c0b04d1 | 2211 | int (*process)(struct perf_file_section *section, |
b1e5a9be RR |
2212 | struct perf_header *ph, |
2213 | int feat, int fd, void *data)) | |
2ba08250 | 2214 | { |
b1e5a9be | 2215 | struct perf_file_section *feat_sec, *sec; |
9e827dd0 FW |
2216 | int nr_sections; |
2217 | int sec_size; | |
b1e5a9be RR |
2218 | int feat; |
2219 | int err; | |
9e827dd0 | 2220 | |
1c0b04d1 | 2221 | nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS); |
9e827dd0 | 2222 | if (!nr_sections) |
37562eac | 2223 | return 0; |
9e827dd0 | 2224 | |
91b98804 | 2225 | feat_sec = sec = calloc(nr_sections, sizeof(*feat_sec)); |
9e827dd0 | 2226 | if (!feat_sec) |
37562eac | 2227 | return -1; |
9e827dd0 FW |
2228 | |
2229 | sec_size = sizeof(*feat_sec) * nr_sections; | |
2230 | ||
8d541e97 | 2231 | lseek(fd, header->feat_offset, SEEK_SET); |
9e827dd0 | 2232 | |
b1e5a9be RR |
2233 | err = perf_header__getbuffer64(header, fd, feat_sec, sec_size); |
2234 | if (err < 0) | |
769885f3 | 2235 | goto out_free; |
9e827dd0 | 2236 | |
b1e5a9be RR |
2237 | for_each_set_bit(feat, header->adds_features, HEADER_LAST_FEATURE) { |
2238 | err = process(sec++, header, feat, fd, data); | |
2239 | if (err < 0) | |
2240 | goto out_free; | |
2ba08250 | 2241 | } |
b1e5a9be | 2242 | err = 0; |
769885f3 | 2243 | out_free: |
37562eac ACM |
2244 | free(feat_sec); |
2245 | return err; | |
769885f3 | 2246 | } |
4778d2e4 | 2247 | |
114382a0 SE |
2248 | static const int attr_file_abi_sizes[] = { |
2249 | [0] = PERF_ATTR_SIZE_VER0, | |
2250 | [1] = PERF_ATTR_SIZE_VER1, | |
239cc478 | 2251 | [2] = PERF_ATTR_SIZE_VER2, |
0f6a3015 | 2252 | [3] = PERF_ATTR_SIZE_VER3, |
6a21c0b5 | 2253 | [4] = PERF_ATTR_SIZE_VER4, |
114382a0 SE |
2254 | 0, |
2255 | }; | |
2256 | ||
2257 | /* | |
2258 | * In the legacy file format, the magic number is not used to encode endianness. | |
2259 | * hdr_sz was used to encode endianness. But given that hdr_sz can vary based | |
2260 | * on ABI revisions, we need to try all combinations for all endianness to | |
2261 | * detect the endianness. | |
2262 | */ | |
2263 | static int try_all_file_abis(uint64_t hdr_sz, struct perf_header *ph) | |
73323f54 | 2264 | { |
114382a0 SE |
2265 | uint64_t ref_size, attr_size; |
2266 | int i; | |
73323f54 | 2267 | |
114382a0 SE |
2268 | for (i = 0 ; attr_file_abi_sizes[i]; i++) { |
2269 | ref_size = attr_file_abi_sizes[i] | |
2270 | + sizeof(struct perf_file_section); | |
2271 | if (hdr_sz != ref_size) { | |
2272 | attr_size = bswap_64(hdr_sz); | |
2273 | if (attr_size != ref_size) | |
2274 | continue; | |
73323f54 | 2275 | |
114382a0 SE |
2276 | ph->needs_swap = true; |
2277 | } | |
2278 | pr_debug("ABI%d perf.data file detected, need_swap=%d\n", | |
2279 | i, | |
2280 | ph->needs_swap); | |
2281 | return 0; | |
2282 | } | |
2283 | /* could not determine endianness */ | |
2284 | return -1; | |
2285 | } | |
73323f54 | 2286 | |
114382a0 SE |
2287 | #define PERF_PIPE_HDR_VER0 16 |
2288 | ||
2289 | static const size_t attr_pipe_abi_sizes[] = { | |
2290 | [0] = PERF_PIPE_HDR_VER0, | |
2291 | 0, | |
2292 | }; | |
2293 | ||
2294 | /* | |
2295 | * In the legacy pipe format, there is an implicit assumption that endiannesss | |
2296 | * between host recording the samples, and host parsing the samples is the | |
2297 | * same. This is not always the case given that the pipe output may always be | |
2298 | * redirected into a file and analyzed on a different machine with possibly a | |
2299 | * different endianness and perf_event ABI revsions in the perf tool itself. | |
2300 | */ | |
2301 | static int try_all_pipe_abis(uint64_t hdr_sz, struct perf_header *ph) | |
2302 | { | |
2303 | u64 attr_size; | |
2304 | int i; | |
2305 | ||
2306 | for (i = 0 ; attr_pipe_abi_sizes[i]; i++) { | |
2307 | if (hdr_sz != attr_pipe_abi_sizes[i]) { | |
2308 | attr_size = bswap_64(hdr_sz); | |
2309 | if (attr_size != hdr_sz) | |
2310 | continue; | |
73323f54 SE |
2311 | |
2312 | ph->needs_swap = true; | |
2313 | } | |
114382a0 | 2314 | pr_debug("Pipe ABI%d perf.data file detected\n", i); |
73323f54 SE |
2315 | return 0; |
2316 | } | |
114382a0 SE |
2317 | return -1; |
2318 | } | |
2319 | ||
e84ba4e2 FT |
2320 | bool is_perf_magic(u64 magic) |
2321 | { | |
2322 | if (!memcmp(&magic, __perf_magic1, sizeof(magic)) | |
2323 | || magic == __perf_magic2 | |
2324 | || magic == __perf_magic2_sw) | |
2325 | return true; | |
2326 | ||
2327 | return false; | |
2328 | } | |
2329 | ||
114382a0 SE |
2330 | static int check_magic_endian(u64 magic, uint64_t hdr_sz, |
2331 | bool is_pipe, struct perf_header *ph) | |
2332 | { | |
2333 | int ret; | |
2334 | ||
2335 | /* check for legacy format */ | |
2336 | ret = memcmp(&magic, __perf_magic1, sizeof(magic)); | |
2337 | if (ret == 0) { | |
2a08c3ec | 2338 | ph->version = PERF_HEADER_VERSION_1; |
114382a0 SE |
2339 | pr_debug("legacy perf.data format\n"); |
2340 | if (is_pipe) | |
2341 | return try_all_pipe_abis(hdr_sz, ph); | |
2342 | ||
2343 | return try_all_file_abis(hdr_sz, ph); | |
2344 | } | |
2345 | /* | |
2346 | * the new magic number serves two purposes: | |
2347 | * - unique number to identify actual perf.data files | |
2348 | * - encode endianness of file | |
2349 | */ | |
f7913971 | 2350 | ph->version = PERF_HEADER_VERSION_2; |
73323f54 | 2351 | |
114382a0 SE |
2352 | /* check magic number with one endianness */ |
2353 | if (magic == __perf_magic2) | |
73323f54 SE |
2354 | return 0; |
2355 | ||
114382a0 SE |
2356 | /* check magic number with opposite endianness */ |
2357 | if (magic != __perf_magic2_sw) | |
73323f54 SE |
2358 | return -1; |
2359 | ||
2360 | ph->needs_swap = true; | |
2361 | ||
2362 | return 0; | |
2363 | } | |
2364 | ||
1c0b04d1 | 2365 | int perf_file_header__read(struct perf_file_header *header, |
37562eac ACM |
2366 | struct perf_header *ph, int fd) |
2367 | { | |
727ebd54 | 2368 | ssize_t ret; |
73323f54 | 2369 | |
37562eac | 2370 | lseek(fd, 0, SEEK_SET); |
37562eac | 2371 | |
73323f54 SE |
2372 | ret = readn(fd, header, sizeof(*header)); |
2373 | if (ret <= 0) | |
37562eac ACM |
2374 | return -1; |
2375 | ||
114382a0 SE |
2376 | if (check_magic_endian(header->magic, |
2377 | header->attr_size, false, ph) < 0) { | |
2378 | pr_debug("magic/endian check failed\n"); | |
73323f54 | 2379 | return -1; |
114382a0 | 2380 | } |
ba21594c | 2381 | |
73323f54 | 2382 | if (ph->needs_swap) { |
1c0b04d1 | 2383 | mem_bswap_64(header, offsetof(struct perf_file_header, |
73323f54 | 2384 | adds_features)); |
ba21594c ACM |
2385 | } |
2386 | ||
1c0b04d1 | 2387 | if (header->size != sizeof(*header)) { |
37562eac | 2388 | /* Support the previous format */ |
1c0b04d1 ACM |
2389 | if (header->size == offsetof(typeof(*header), adds_features)) |
2390 | bitmap_zero(header->adds_features, HEADER_FEAT_BITS); | |
37562eac ACM |
2391 | else |
2392 | return -1; | |
d327fa43 | 2393 | } else if (ph->needs_swap) { |
d327fa43 DA |
2394 | /* |
2395 | * feature bitmap is declared as an array of unsigned longs -- | |
2396 | * not good since its size can differ between the host that | |
2397 | * generated the data file and the host analyzing the file. | |
2398 | * | |
2399 | * We need to handle endianness, but we don't know the size of | |
2400 | * the unsigned long where the file was generated. Take a best | |
2401 | * guess at determining it: try 64-bit swap first (ie., file | |
2402 | * created on a 64-bit host), and check if the hostname feature | |
2403 | * bit is set (this feature bit is forced on as of fbe96f2). | |
2404 | * If the bit is not, undo the 64-bit swap and try a 32-bit | |
2405 | * swap. If the hostname bit is still not set (e.g., older data | |
2406 | * file), punt and fallback to the original behavior -- | |
2407 | * clearing all feature bits and setting buildid. | |
2408 | */ | |
80c0120a DA |
2409 | mem_bswap_64(&header->adds_features, |
2410 | BITS_TO_U64(HEADER_FEAT_BITS)); | |
d327fa43 DA |
2411 | |
2412 | if (!test_bit(HEADER_HOSTNAME, header->adds_features)) { | |
80c0120a DA |
2413 | /* unswap as u64 */ |
2414 | mem_bswap_64(&header->adds_features, | |
2415 | BITS_TO_U64(HEADER_FEAT_BITS)); | |
2416 | ||
2417 | /* unswap as u32 */ | |
2418 | mem_bswap_32(&header->adds_features, | |
2419 | BITS_TO_U32(HEADER_FEAT_BITS)); | |
d327fa43 DA |
2420 | } |
2421 | ||
2422 | if (!test_bit(HEADER_HOSTNAME, header->adds_features)) { | |
2423 | bitmap_zero(header->adds_features, HEADER_FEAT_BITS); | |
2424 | set_bit(HEADER_BUILD_ID, header->adds_features); | |
2425 | } | |
4778d2e4 | 2426 | } |
9e827dd0 | 2427 | |
1c0b04d1 | 2428 | memcpy(&ph->adds_features, &header->adds_features, |
ba21594c | 2429 | sizeof(ph->adds_features)); |
37562eac | 2430 | |
1c0b04d1 ACM |
2431 | ph->data_offset = header->data.offset; |
2432 | ph->data_size = header->data.size; | |
8d541e97 | 2433 | ph->feat_offset = header->data.offset + header->data.size; |
37562eac ACM |
2434 | return 0; |
2435 | } | |
2436 | ||
1c0b04d1 | 2437 | static int perf_file_section__process(struct perf_file_section *section, |
ba21594c | 2438 | struct perf_header *ph, |
da378962 | 2439 | int feat, int fd, void *data) |
37562eac | 2440 | { |
1c0b04d1 | 2441 | if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) { |
9486aa38 | 2442 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " |
1c0b04d1 | 2443 | "%d, continuing...\n", section->offset, feat); |
37562eac ACM |
2444 | return 0; |
2445 | } | |
2446 | ||
b1e5a9be RR |
2447 | if (feat >= HEADER_LAST_FEATURE) { |
2448 | pr_debug("unknown feature %d, continuing...\n", feat); | |
2449 | return 0; | |
2450 | } | |
2451 | ||
f1c67db7 RR |
2452 | if (!feat_ops[feat].process) |
2453 | return 0; | |
37562eac | 2454 | |
3d7eb86b | 2455 | return feat_ops[feat].process(section, ph, fd, data); |
37562eac | 2456 | } |
2ba08250 | 2457 | |
1c0b04d1 | 2458 | static int perf_file_header__read_pipe(struct perf_pipe_file_header *header, |
454c407e TZ |
2459 | struct perf_header *ph, int fd, |
2460 | bool repipe) | |
7c6a1c65 | 2461 | { |
727ebd54 | 2462 | ssize_t ret; |
73323f54 SE |
2463 | |
2464 | ret = readn(fd, header, sizeof(*header)); | |
2465 | if (ret <= 0) | |
2466 | return -1; | |
2467 | ||
114382a0 SE |
2468 | if (check_magic_endian(header->magic, header->size, true, ph) < 0) { |
2469 | pr_debug("endian/magic failed\n"); | |
8dc58101 | 2470 | return -1; |
114382a0 SE |
2471 | } |
2472 | ||
2473 | if (ph->needs_swap) | |
2474 | header->size = bswap_64(header->size); | |
8dc58101 | 2475 | |
1c0b04d1 | 2476 | if (repipe && do_write(STDOUT_FILENO, header, sizeof(*header)) < 0) |
454c407e TZ |
2477 | return -1; |
2478 | ||
8dc58101 TZ |
2479 | return 0; |
2480 | } | |
2481 | ||
d4339569 | 2482 | static int perf_header__read_pipe(struct perf_session *session) |
8dc58101 | 2483 | { |
1c0b04d1 | 2484 | struct perf_header *header = &session->header; |
8dc58101 TZ |
2485 | struct perf_pipe_file_header f_header; |
2486 | ||
cc9784bd JO |
2487 | if (perf_file_header__read_pipe(&f_header, header, |
2488 | perf_data_file__fd(session->file), | |
454c407e | 2489 | session->repipe) < 0) { |
8dc58101 TZ |
2490 | pr_debug("incompatible file format\n"); |
2491 | return -EINVAL; | |
2492 | } | |
2493 | ||
8dc58101 TZ |
2494 | return 0; |
2495 | } | |
2496 | ||
69996df4 SE |
2497 | static int read_attr(int fd, struct perf_header *ph, |
2498 | struct perf_file_attr *f_attr) | |
2499 | { | |
2500 | struct perf_event_attr *attr = &f_attr->attr; | |
2501 | size_t sz, left; | |
2502 | size_t our_sz = sizeof(f_attr->attr); | |
727ebd54 | 2503 | ssize_t ret; |
69996df4 SE |
2504 | |
2505 | memset(f_attr, 0, sizeof(*f_attr)); | |
2506 | ||
2507 | /* read minimal guaranteed structure */ | |
2508 | ret = readn(fd, attr, PERF_ATTR_SIZE_VER0); | |
2509 | if (ret <= 0) { | |
2510 | pr_debug("cannot read %d bytes of header attr\n", | |
2511 | PERF_ATTR_SIZE_VER0); | |
2512 | return -1; | |
2513 | } | |
2514 | ||
2515 | /* on file perf_event_attr size */ | |
2516 | sz = attr->size; | |
114382a0 | 2517 | |
69996df4 SE |
2518 | if (ph->needs_swap) |
2519 | sz = bswap_32(sz); | |
2520 | ||
2521 | if (sz == 0) { | |
2522 | /* assume ABI0 */ | |
2523 | sz = PERF_ATTR_SIZE_VER0; | |
2524 | } else if (sz > our_sz) { | |
2525 | pr_debug("file uses a more recent and unsupported ABI" | |
2526 | " (%zu bytes extra)\n", sz - our_sz); | |
2527 | return -1; | |
2528 | } | |
2529 | /* what we have not yet read and that we know about */ | |
2530 | left = sz - PERF_ATTR_SIZE_VER0; | |
2531 | if (left) { | |
2532 | void *ptr = attr; | |
2533 | ptr += PERF_ATTR_SIZE_VER0; | |
2534 | ||
2535 | ret = readn(fd, ptr, left); | |
2536 | } | |
2537 | /* read perf_file_section, ids are read in caller */ | |
2538 | ret = readn(fd, &f_attr->ids, sizeof(f_attr->ids)); | |
2539 | ||
2540 | return ret <= 0 ? -1 : 0; | |
2541 | } | |
2542 | ||
831394bd NK |
2543 | static int perf_evsel__prepare_tracepoint_event(struct perf_evsel *evsel, |
2544 | struct pevent *pevent) | |
cb9dd49e | 2545 | { |
831394bd | 2546 | struct event_format *event; |
cb9dd49e ACM |
2547 | char bf[128]; |
2548 | ||
831394bd NK |
2549 | /* already prepared */ |
2550 | if (evsel->tp_format) | |
2551 | return 0; | |
2552 | ||
3dce2ce3 NK |
2553 | if (pevent == NULL) { |
2554 | pr_debug("broken or missing trace data\n"); | |
2555 | return -1; | |
2556 | } | |
2557 | ||
831394bd | 2558 | event = pevent_find_event(pevent, evsel->attr.config); |
cb9dd49e ACM |
2559 | if (event == NULL) |
2560 | return -1; | |
2561 | ||
831394bd NK |
2562 | if (!evsel->name) { |
2563 | snprintf(bf, sizeof(bf), "%s:%s", event->system, event->name); | |
2564 | evsel->name = strdup(bf); | |
2565 | if (evsel->name == NULL) | |
2566 | return -1; | |
2567 | } | |
cb9dd49e | 2568 | |
fcf65bf1 | 2569 | evsel->tp_format = event; |
cb9dd49e ACM |
2570 | return 0; |
2571 | } | |
2572 | ||
831394bd NK |
2573 | static int perf_evlist__prepare_tracepoint_events(struct perf_evlist *evlist, |
2574 | struct pevent *pevent) | |
cb9dd49e ACM |
2575 | { |
2576 | struct perf_evsel *pos; | |
2577 | ||
0050f7aa | 2578 | evlist__for_each(evlist, pos) { |
831394bd NK |
2579 | if (pos->attr.type == PERF_TYPE_TRACEPOINT && |
2580 | perf_evsel__prepare_tracepoint_event(pos, pevent)) | |
cb9dd49e ACM |
2581 | return -1; |
2582 | } | |
2583 | ||
2584 | return 0; | |
2585 | } | |
2586 | ||
d4339569 | 2587 | int perf_session__read_header(struct perf_session *session) |
8dc58101 | 2588 | { |
cc9784bd | 2589 | struct perf_data_file *file = session->file; |
1c0b04d1 | 2590 | struct perf_header *header = &session->header; |
ba21594c | 2591 | struct perf_file_header f_header; |
7c6a1c65 PZ |
2592 | struct perf_file_attr f_attr; |
2593 | u64 f_id; | |
7c6a1c65 | 2594 | int nr_attrs, nr_ids, i, j; |
cc9784bd | 2595 | int fd = perf_data_file__fd(file); |
7c6a1c65 | 2596 | |
334fe7a3 | 2597 | session->evlist = perf_evlist__new(); |
a91e5431 ACM |
2598 | if (session->evlist == NULL) |
2599 | return -ENOMEM; | |
2600 | ||
2c07144d | 2601 | session->evlist->env = &header->env; |
cc9784bd | 2602 | if (perf_data_file__is_pipe(file)) |
d4339569 | 2603 | return perf_header__read_pipe(session); |
8dc58101 | 2604 | |
69996df4 | 2605 | if (perf_file_header__read(&f_header, header, fd) < 0) |
4dc0a04b | 2606 | return -EINVAL; |
7c6a1c65 | 2607 | |
b314e5cf NK |
2608 | /* |
2609 | * Sanity check that perf.data was written cleanly; data size is | |
2610 | * initialized to 0 and updated only if the on_exit function is run. | |
2611 | * If data size is still 0 then the file contains only partial | |
2612 | * information. Just warn user and process it as much as it can. | |
2613 | */ | |
2614 | if (f_header.data.size == 0) { | |
2615 | pr_warning("WARNING: The %s file's data size field is 0 which is unexpected.\n" | |
2616 | "Was the 'perf record' command properly terminated?\n", | |
cc9784bd | 2617 | file->path); |
b314e5cf NK |
2618 | } |
2619 | ||
69996df4 | 2620 | nr_attrs = f_header.attrs.size / f_header.attr_size; |
7c6a1c65 PZ |
2621 | lseek(fd, f_header.attrs.offset, SEEK_SET); |
2622 | ||
2623 | for (i = 0; i < nr_attrs; i++) { | |
a91e5431 | 2624 | struct perf_evsel *evsel; |
1c222bce | 2625 | off_t tmp; |
7c6a1c65 | 2626 | |
69996df4 | 2627 | if (read_attr(fd, header, &f_attr) < 0) |
769885f3 | 2628 | goto out_errno; |
ba21594c | 2629 | |
1060ab85 DA |
2630 | if (header->needs_swap) { |
2631 | f_attr.ids.size = bswap_64(f_attr.ids.size); | |
2632 | f_attr.ids.offset = bswap_64(f_attr.ids.offset); | |
eda3913b | 2633 | perf_event__attr_swap(&f_attr.attr); |
1060ab85 | 2634 | } |
eda3913b | 2635 | |
1c222bce | 2636 | tmp = lseek(fd, 0, SEEK_CUR); |
ef503831 | 2637 | evsel = perf_evsel__new(&f_attr.attr); |
7c6a1c65 | 2638 | |
a91e5431 ACM |
2639 | if (evsel == NULL) |
2640 | goto out_delete_evlist; | |
0807d2d8 ACM |
2641 | |
2642 | evsel->needs_swap = header->needs_swap; | |
a91e5431 ACM |
2643 | /* |
2644 | * Do it before so that if perf_evsel__alloc_id fails, this | |
2645 | * entry gets purged too at perf_evlist__delete(). | |
2646 | */ | |
2647 | perf_evlist__add(session->evlist, evsel); | |
7c6a1c65 PZ |
2648 | |
2649 | nr_ids = f_attr.ids.size / sizeof(u64); | |
a91e5431 ACM |
2650 | /* |
2651 | * We don't have the cpu and thread maps on the header, so | |
2652 | * for allocating the perf_sample_id table we fake 1 cpu and | |
2653 | * hattr->ids threads. | |
2654 | */ | |
2655 | if (perf_evsel__alloc_id(evsel, 1, nr_ids)) | |
2656 | goto out_delete_evlist; | |
2657 | ||
7c6a1c65 PZ |
2658 | lseek(fd, f_attr.ids.offset, SEEK_SET); |
2659 | ||
2660 | for (j = 0; j < nr_ids; j++) { | |
1c0b04d1 | 2661 | if (perf_header__getbuffer64(header, fd, &f_id, sizeof(f_id))) |
769885f3 | 2662 | goto out_errno; |
7c6a1c65 | 2663 | |
a91e5431 | 2664 | perf_evlist__id_add(session->evlist, evsel, 0, j, f_id); |
7c6a1c65 | 2665 | } |
11deb1f9 | 2666 | |
7c6a1c65 PZ |
2667 | lseek(fd, tmp, SEEK_SET); |
2668 | } | |
2669 | ||
d04b35f8 ACM |
2670 | symbol_conf.nr_events = nr_attrs; |
2671 | ||
29f5ffd3 | 2672 | perf_header__process_sections(header, fd, &session->tevent, |
fbe96f29 | 2673 | perf_file_section__process); |
4778d2e4 | 2674 | |
831394bd | 2675 | if (perf_evlist__prepare_tracepoint_events(session->evlist, |
29f5ffd3 | 2676 | session->tevent.pevent)) |
cb9dd49e ACM |
2677 | goto out_delete_evlist; |
2678 | ||
4dc0a04b | 2679 | return 0; |
769885f3 ACM |
2680 | out_errno: |
2681 | return -errno; | |
a91e5431 ACM |
2682 | |
2683 | out_delete_evlist: | |
2684 | perf_evlist__delete(session->evlist); | |
2685 | session->evlist = NULL; | |
2686 | return -ENOMEM; | |
7c6a1c65 | 2687 | } |
0d3a5c88 | 2688 | |
45694aa7 | 2689 | int perf_event__synthesize_attr(struct perf_tool *tool, |
f4d83436 | 2690 | struct perf_event_attr *attr, u32 ids, u64 *id, |
743eb868 | 2691 | perf_event__handler_t process) |
2c46dbb5 | 2692 | { |
8115d60c | 2693 | union perf_event *ev; |
2c46dbb5 TZ |
2694 | size_t size; |
2695 | int err; | |
2696 | ||
2697 | size = sizeof(struct perf_event_attr); | |
9ac3e487 | 2698 | size = PERF_ALIGN(size, sizeof(u64)); |
2c46dbb5 TZ |
2699 | size += sizeof(struct perf_event_header); |
2700 | size += ids * sizeof(u64); | |
2701 | ||
2702 | ev = malloc(size); | |
2703 | ||
ce47dc56 CS |
2704 | if (ev == NULL) |
2705 | return -ENOMEM; | |
2706 | ||
2c46dbb5 TZ |
2707 | ev->attr.attr = *attr; |
2708 | memcpy(ev->attr.id, id, ids * sizeof(u64)); | |
2709 | ||
2710 | ev->attr.header.type = PERF_RECORD_HEADER_ATTR; | |
f4d83436 | 2711 | ev->attr.header.size = (u16)size; |
2c46dbb5 | 2712 | |
f4d83436 RR |
2713 | if (ev->attr.header.size == size) |
2714 | err = process(tool, ev, NULL, NULL); | |
2715 | else | |
2716 | err = -E2BIG; | |
2c46dbb5 TZ |
2717 | |
2718 | free(ev); | |
2719 | ||
2720 | return err; | |
2721 | } | |
2722 | ||
45694aa7 | 2723 | int perf_event__synthesize_attrs(struct perf_tool *tool, |
d20deb64 | 2724 | struct perf_session *session, |
a91e5431 | 2725 | perf_event__handler_t process) |
2c46dbb5 | 2726 | { |
6606f873 | 2727 | struct perf_evsel *evsel; |
a91e5431 | 2728 | int err = 0; |
2c46dbb5 | 2729 | |
0050f7aa | 2730 | evlist__for_each(session->evlist, evsel) { |
6606f873 RR |
2731 | err = perf_event__synthesize_attr(tool, &evsel->attr, evsel->ids, |
2732 | evsel->id, process); | |
2c46dbb5 TZ |
2733 | if (err) { |
2734 | pr_debug("failed to create perf header attribute\n"); | |
2735 | return err; | |
2736 | } | |
2737 | } | |
2738 | ||
2739 | return err; | |
2740 | } | |
2741 | ||
47c3d109 AH |
2742 | int perf_event__process_attr(struct perf_tool *tool __maybe_unused, |
2743 | union perf_event *event, | |
10d0f086 | 2744 | struct perf_evlist **pevlist) |
2c46dbb5 | 2745 | { |
f4d83436 | 2746 | u32 i, ids, n_ids; |
a91e5431 | 2747 | struct perf_evsel *evsel; |
10d0f086 | 2748 | struct perf_evlist *evlist = *pevlist; |
2c46dbb5 | 2749 | |
10d0f086 | 2750 | if (evlist == NULL) { |
334fe7a3 | 2751 | *pevlist = evlist = perf_evlist__new(); |
10d0f086 | 2752 | if (evlist == NULL) |
a91e5431 ACM |
2753 | return -ENOMEM; |
2754 | } | |
2755 | ||
ef503831 | 2756 | evsel = perf_evsel__new(&event->attr.attr); |
a91e5431 | 2757 | if (evsel == NULL) |
2c46dbb5 TZ |
2758 | return -ENOMEM; |
2759 | ||
10d0f086 | 2760 | perf_evlist__add(evlist, evsel); |
a91e5431 | 2761 | |
8115d60c ACM |
2762 | ids = event->header.size; |
2763 | ids -= (void *)&event->attr.id - (void *)event; | |
2c46dbb5 | 2764 | n_ids = ids / sizeof(u64); |
a91e5431 ACM |
2765 | /* |
2766 | * We don't have the cpu and thread maps on the header, so | |
2767 | * for allocating the perf_sample_id table we fake 1 cpu and | |
2768 | * hattr->ids threads. | |
2769 | */ | |
2770 | if (perf_evsel__alloc_id(evsel, 1, n_ids)) | |
2771 | return -ENOMEM; | |
2c46dbb5 TZ |
2772 | |
2773 | for (i = 0; i < n_ids; i++) { | |
10d0f086 | 2774 | perf_evlist__id_add(evlist, evsel, 0, i, event->attr.id[i]); |
2c46dbb5 TZ |
2775 | } |
2776 | ||
7e0d6fc9 AH |
2777 | symbol_conf.nr_events = evlist->nr_entries; |
2778 | ||
2c46dbb5 TZ |
2779 | return 0; |
2780 | } | |
cd19a035 | 2781 | |
45694aa7 | 2782 | int perf_event__synthesize_tracing_data(struct perf_tool *tool, int fd, |
d20deb64 | 2783 | struct perf_evlist *evlist, |
743eb868 | 2784 | perf_event__handler_t process) |
9215545e | 2785 | { |
8115d60c | 2786 | union perf_event ev; |
29208e57 | 2787 | struct tracing_data *tdata; |
9215545e | 2788 | ssize_t size = 0, aligned_size = 0, padding; |
1d037ca1 | 2789 | int err __maybe_unused = 0; |
9215545e | 2790 | |
29208e57 JO |
2791 | /* |
2792 | * We are going to store the size of the data followed | |
2793 | * by the data contents. Since the fd descriptor is a pipe, | |
2794 | * we cannot seek back to store the size of the data once | |
2795 | * we know it. Instead we: | |
2796 | * | |
2797 | * - write the tracing data to the temp file | |
2798 | * - get/write the data size to pipe | |
2799 | * - write the tracing data from the temp file | |
2800 | * to the pipe | |
2801 | */ | |
2802 | tdata = tracing_data_get(&evlist->entries, fd, true); | |
2803 | if (!tdata) | |
2804 | return -1; | |
2805 | ||
9215545e TZ |
2806 | memset(&ev, 0, sizeof(ev)); |
2807 | ||
2808 | ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA; | |
29208e57 | 2809 | size = tdata->size; |
9ac3e487 | 2810 | aligned_size = PERF_ALIGN(size, sizeof(u64)); |
9215545e TZ |
2811 | padding = aligned_size - size; |
2812 | ev.tracing_data.header.size = sizeof(ev.tracing_data); | |
2813 | ev.tracing_data.size = aligned_size; | |
2814 | ||
45694aa7 | 2815 | process(tool, &ev, NULL, NULL); |
9215545e | 2816 | |
29208e57 JO |
2817 | /* |
2818 | * The put function will copy all the tracing data | |
2819 | * stored in temp file to the pipe. | |
2820 | */ | |
2821 | tracing_data_put(tdata); | |
2822 | ||
9215545e TZ |
2823 | write_padded(fd, NULL, 0, padding); |
2824 | ||
2825 | return aligned_size; | |
2826 | } | |
2827 | ||
47c3d109 AH |
2828 | int perf_event__process_tracing_data(struct perf_tool *tool __maybe_unused, |
2829 | union perf_event *event, | |
8115d60c | 2830 | struct perf_session *session) |
9215545e | 2831 | { |
8115d60c | 2832 | ssize_t size_read, padding, size = event->tracing_data.size; |
cc9784bd JO |
2833 | int fd = perf_data_file__fd(session->file); |
2834 | off_t offset = lseek(fd, 0, SEEK_CUR); | |
9215545e TZ |
2835 | char buf[BUFSIZ]; |
2836 | ||
2837 | /* setup for reading amidst mmap */ | |
cc9784bd | 2838 | lseek(fd, offset + sizeof(struct tracing_data_event), |
9215545e TZ |
2839 | SEEK_SET); |
2840 | ||
29f5ffd3 | 2841 | size_read = trace_report(fd, &session->tevent, |
da378962 | 2842 | session->repipe); |
9ac3e487 | 2843 | padding = PERF_ALIGN(size_read, sizeof(u64)) - size_read; |
9215545e | 2844 | |
cc9784bd | 2845 | if (readn(fd, buf, padding) < 0) { |
2caa48a2 ACM |
2846 | pr_err("%s: reading input file", __func__); |
2847 | return -1; | |
2848 | } | |
454c407e TZ |
2849 | if (session->repipe) { |
2850 | int retw = write(STDOUT_FILENO, buf, padding); | |
2caa48a2 ACM |
2851 | if (retw <= 0 || retw != padding) { |
2852 | pr_err("%s: repiping tracing data padding", __func__); | |
2853 | return -1; | |
2854 | } | |
454c407e | 2855 | } |
9215545e | 2856 | |
2caa48a2 ACM |
2857 | if (size_read + padding != size) { |
2858 | pr_err("%s: tracing data size mismatch", __func__); | |
2859 | return -1; | |
2860 | } | |
9215545e | 2861 | |
831394bd | 2862 | perf_evlist__prepare_tracepoint_events(session->evlist, |
29f5ffd3 | 2863 | session->tevent.pevent); |
8b6ee4c5 | 2864 | |
9215545e TZ |
2865 | return size_read + padding; |
2866 | } | |
c7929e47 | 2867 | |
45694aa7 | 2868 | int perf_event__synthesize_build_id(struct perf_tool *tool, |
d20deb64 | 2869 | struct dso *pos, u16 misc, |
8115d60c | 2870 | perf_event__handler_t process, |
743eb868 | 2871 | struct machine *machine) |
c7929e47 | 2872 | { |
8115d60c | 2873 | union perf_event ev; |
c7929e47 TZ |
2874 | size_t len; |
2875 | int err = 0; | |
2876 | ||
2877 | if (!pos->hit) | |
2878 | return err; | |
2879 | ||
2880 | memset(&ev, 0, sizeof(ev)); | |
2881 | ||
2882 | len = pos->long_name_len + 1; | |
9ac3e487 | 2883 | len = PERF_ALIGN(len, NAME_ALIGN); |
c7929e47 TZ |
2884 | memcpy(&ev.build_id.build_id, pos->build_id, sizeof(pos->build_id)); |
2885 | ev.build_id.header.type = PERF_RECORD_HEADER_BUILD_ID; | |
2886 | ev.build_id.header.misc = misc; | |
23346f21 | 2887 | ev.build_id.pid = machine->pid; |
c7929e47 TZ |
2888 | ev.build_id.header.size = sizeof(ev.build_id) + len; |
2889 | memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len); | |
2890 | ||
45694aa7 | 2891 | err = process(tool, &ev, NULL, machine); |
c7929e47 TZ |
2892 | |
2893 | return err; | |
2894 | } | |
2895 | ||
1d037ca1 | 2896 | int perf_event__process_build_id(struct perf_tool *tool __maybe_unused, |
d20deb64 | 2897 | union perf_event *event, |
8115d60c | 2898 | struct perf_session *session) |
c7929e47 | 2899 | { |
8115d60c ACM |
2900 | __event_process_build_id(&event->build_id, |
2901 | event->build_id.filename, | |
a1645ce1 | 2902 | session); |
c7929e47 TZ |
2903 | return 0; |
2904 | } |