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 | |
73323f54 SE |
27 | /* |
28 | * magic2 = "PERFILE2" | |
29 | * must be a numerical value to let the endianness | |
30 | * determine the memory layout. That way we are able | |
31 | * to detect endianness when reading the perf.data file | |
32 | * back. | |
33 | * | |
34 | * we check for legacy (PERFFILE) format. | |
35 | */ | |
36 | static const char *__perf_magic1 = "PERFFILE"; | |
37 | static const u64 __perf_magic2 = 0x32454c4946524550ULL; | |
38 | static const u64 __perf_magic2_sw = 0x50455246494c4532ULL; | |
7c6a1c65 | 39 | |
73323f54 | 40 | #define PERF_MAGIC __perf_magic2 |
7c6a1c65 | 41 | |
7c6a1c65 | 42 | struct perf_file_attr { |
cdd6c482 | 43 | struct perf_event_attr attr; |
7c6a1c65 PZ |
44 | struct perf_file_section ids; |
45 | }; | |
46 | ||
1c0b04d1 | 47 | void perf_header__set_feat(struct perf_header *header, int feat) |
8d06367f | 48 | { |
1c0b04d1 | 49 | set_bit(feat, header->adds_features); |
8d06367f ACM |
50 | } |
51 | ||
1c0b04d1 | 52 | void perf_header__clear_feat(struct perf_header *header, int feat) |
baa2f6ce | 53 | { |
1c0b04d1 | 54 | clear_bit(feat, header->adds_features); |
baa2f6ce ACM |
55 | } |
56 | ||
1c0b04d1 | 57 | bool perf_header__has_feat(const struct perf_header *header, int feat) |
8d06367f | 58 | { |
1c0b04d1 | 59 | return test_bit(feat, header->adds_features); |
8d06367f ACM |
60 | } |
61 | ||
3726cc75 | 62 | static int do_write(int fd, const void *buf, size_t size) |
7c6a1c65 PZ |
63 | { |
64 | while (size) { | |
65 | int ret = write(fd, buf, size); | |
66 | ||
67 | if (ret < 0) | |
d5eed904 | 68 | return -errno; |
7c6a1c65 PZ |
69 | |
70 | size -= ret; | |
71 | buf += ret; | |
72 | } | |
3726cc75 ACM |
73 | |
74 | return 0; | |
7c6a1c65 PZ |
75 | } |
76 | ||
e195fac8 | 77 | int write_padded(int fd, const void *bf, size_t count, size_t count_aligned) |
f92cb24c ACM |
78 | { |
79 | static const char zero_buf[NAME_ALIGN]; | |
80 | int err = do_write(fd, bf, count); | |
81 | ||
82 | if (!err) | |
83 | err = do_write(fd, zero_buf, count_aligned - count); | |
84 | ||
85 | return err; | |
86 | } | |
87 | ||
2bb00d2f KL |
88 | #define string_size(str) \ |
89 | (PERF_ALIGN((strlen(str) + 1), NAME_ALIGN) + sizeof(u32)) | |
90 | ||
fbe96f29 SE |
91 | static int do_write_string(int fd, const char *str) |
92 | { | |
93 | u32 len, olen; | |
94 | int ret; | |
95 | ||
96 | olen = strlen(str) + 1; | |
9ac3e487 | 97 | len = PERF_ALIGN(olen, NAME_ALIGN); |
fbe96f29 SE |
98 | |
99 | /* write len, incl. \0 */ | |
100 | ret = do_write(fd, &len, sizeof(len)); | |
101 | if (ret < 0) | |
102 | return ret; | |
103 | ||
104 | return write_padded(fd, str, olen, len); | |
105 | } | |
106 | ||
107 | static char *do_read_string(int fd, struct perf_header *ph) | |
108 | { | |
109 | ssize_t sz, ret; | |
110 | u32 len; | |
111 | char *buf; | |
112 | ||
5323f60c | 113 | sz = readn(fd, &len, sizeof(len)); |
fbe96f29 SE |
114 | if (sz < (ssize_t)sizeof(len)) |
115 | return NULL; | |
116 | ||
117 | if (ph->needs_swap) | |
118 | len = bswap_32(len); | |
119 | ||
120 | buf = malloc(len); | |
121 | if (!buf) | |
122 | return NULL; | |
123 | ||
5323f60c | 124 | ret = readn(fd, buf, len); |
fbe96f29 SE |
125 | if (ret == (ssize_t)len) { |
126 | /* | |
127 | * strings are padded by zeroes | |
128 | * thus the actual strlen of buf | |
129 | * may be less than len | |
130 | */ | |
131 | return buf; | |
132 | } | |
133 | ||
134 | free(buf); | |
135 | return NULL; | |
136 | } | |
137 | ||
1d037ca1 | 138 | static int write_tracing_data(int fd, struct perf_header *h __maybe_unused, |
fbe96f29 SE |
139 | struct perf_evlist *evlist) |
140 | { | |
141 | return read_tracing_data(fd, &evlist->entries); | |
142 | } | |
143 | ||
144 | ||
145 | static int write_build_id(int fd, struct perf_header *h, | |
1d037ca1 | 146 | struct perf_evlist *evlist __maybe_unused) |
fbe96f29 SE |
147 | { |
148 | struct perf_session *session; | |
149 | int err; | |
150 | ||
151 | session = container_of(h, struct perf_session, header); | |
152 | ||
e20960c0 RR |
153 | if (!perf_session__read_build_ids(session, true)) |
154 | return -1; | |
155 | ||
714c9c4a | 156 | err = perf_session__write_buildid_table(session, fd); |
fbe96f29 SE |
157 | if (err < 0) { |
158 | pr_debug("failed to write buildid table\n"); | |
159 | return err; | |
160 | } | |
73c5d224 | 161 | perf_session__cache_build_ids(session); |
fbe96f29 SE |
162 | |
163 | return 0; | |
164 | } | |
165 | ||
1d037ca1 IT |
166 | static int write_hostname(int fd, struct perf_header *h __maybe_unused, |
167 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
168 | { |
169 | struct utsname uts; | |
170 | int ret; | |
171 | ||
172 | ret = uname(&uts); | |
173 | if (ret < 0) | |
174 | return -1; | |
175 | ||
176 | return do_write_string(fd, uts.nodename); | |
177 | } | |
178 | ||
1d037ca1 IT |
179 | static int write_osrelease(int fd, struct perf_header *h __maybe_unused, |
180 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
181 | { |
182 | struct utsname uts; | |
183 | int ret; | |
184 | ||
185 | ret = uname(&uts); | |
186 | if (ret < 0) | |
187 | return -1; | |
188 | ||
189 | return do_write_string(fd, uts.release); | |
190 | } | |
191 | ||
1d037ca1 IT |
192 | static int write_arch(int fd, struct perf_header *h __maybe_unused, |
193 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
194 | { |
195 | struct utsname uts; | |
196 | int ret; | |
197 | ||
198 | ret = uname(&uts); | |
199 | if (ret < 0) | |
200 | return -1; | |
201 | ||
202 | return do_write_string(fd, uts.machine); | |
203 | } | |
204 | ||
1d037ca1 IT |
205 | static int write_version(int fd, struct perf_header *h __maybe_unused, |
206 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
207 | { |
208 | return do_write_string(fd, perf_version_string); | |
209 | } | |
210 | ||
493c3031 | 211 | static int __write_cpudesc(int fd, const char *cpuinfo_proc) |
fbe96f29 | 212 | { |
fbe96f29 SE |
213 | FILE *file; |
214 | char *buf = NULL; | |
215 | char *s, *p; | |
493c3031 | 216 | const char *search = cpuinfo_proc; |
fbe96f29 SE |
217 | size_t len = 0; |
218 | int ret = -1; | |
219 | ||
220 | if (!search) | |
221 | return -1; | |
222 | ||
223 | file = fopen("/proc/cpuinfo", "r"); | |
224 | if (!file) | |
225 | return -1; | |
226 | ||
227 | while (getline(&buf, &len, file) > 0) { | |
228 | ret = strncmp(buf, search, strlen(search)); | |
229 | if (!ret) | |
230 | break; | |
231 | } | |
232 | ||
ed307758 WN |
233 | if (ret) { |
234 | ret = -1; | |
fbe96f29 | 235 | goto done; |
ed307758 | 236 | } |
fbe96f29 SE |
237 | |
238 | s = buf; | |
239 | ||
240 | p = strchr(buf, ':'); | |
241 | if (p && *(p+1) == ' ' && *(p+2)) | |
242 | s = p + 2; | |
243 | p = strchr(s, '\n'); | |
244 | if (p) | |
245 | *p = '\0'; | |
246 | ||
247 | /* squash extra space characters (branding string) */ | |
248 | p = s; | |
249 | while (*p) { | |
250 | if (isspace(*p)) { | |
251 | char *r = p + 1; | |
252 | char *q = r; | |
253 | *p = ' '; | |
254 | while (*q && isspace(*q)) | |
255 | q++; | |
256 | if (q != (p+1)) | |
257 | while ((*r++ = *q++)); | |
258 | } | |
259 | p++; | |
260 | } | |
261 | ret = do_write_string(fd, s); | |
262 | done: | |
263 | free(buf); | |
264 | fclose(file); | |
265 | return ret; | |
266 | } | |
267 | ||
493c3031 WN |
268 | static int write_cpudesc(int fd, struct perf_header *h __maybe_unused, |
269 | struct perf_evlist *evlist __maybe_unused) | |
270 | { | |
271 | #ifndef CPUINFO_PROC | |
272 | #define CPUINFO_PROC {"model name", } | |
273 | #endif | |
274 | const char *cpuinfo_procs[] = CPUINFO_PROC; | |
275 | unsigned int i; | |
276 | ||
277 | for (i = 0; i < ARRAY_SIZE(cpuinfo_procs); i++) { | |
278 | int ret; | |
279 | ret = __write_cpudesc(fd, cpuinfo_procs[i]); | |
280 | if (ret >= 0) | |
281 | return ret; | |
282 | } | |
283 | return -1; | |
284 | } | |
285 | ||
286 | ||
1d037ca1 IT |
287 | static int write_nrcpus(int fd, struct perf_header *h __maybe_unused, |
288 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
289 | { |
290 | long nr; | |
291 | u32 nrc, nra; | |
292 | int ret; | |
293 | ||
294 | nr = sysconf(_SC_NPROCESSORS_CONF); | |
295 | if (nr < 0) | |
296 | return -1; | |
297 | ||
298 | nrc = (u32)(nr & UINT_MAX); | |
299 | ||
300 | nr = sysconf(_SC_NPROCESSORS_ONLN); | |
301 | if (nr < 0) | |
302 | return -1; | |
303 | ||
304 | nra = (u32)(nr & UINT_MAX); | |
305 | ||
306 | ret = do_write(fd, &nrc, sizeof(nrc)); | |
307 | if (ret < 0) | |
308 | return ret; | |
309 | ||
310 | return do_write(fd, &nra, sizeof(nra)); | |
311 | } | |
312 | ||
1d037ca1 | 313 | static int write_event_desc(int fd, struct perf_header *h __maybe_unused, |
fbe96f29 SE |
314 | struct perf_evlist *evlist) |
315 | { | |
6606f873 | 316 | struct perf_evsel *evsel; |
74ba9e11 | 317 | u32 nre, nri, sz; |
fbe96f29 SE |
318 | int ret; |
319 | ||
74ba9e11 | 320 | nre = evlist->nr_entries; |
fbe96f29 SE |
321 | |
322 | /* | |
323 | * write number of events | |
324 | */ | |
325 | ret = do_write(fd, &nre, sizeof(nre)); | |
326 | if (ret < 0) | |
327 | return ret; | |
328 | ||
329 | /* | |
330 | * size of perf_event_attr struct | |
331 | */ | |
6606f873 | 332 | sz = (u32)sizeof(evsel->attr); |
fbe96f29 SE |
333 | ret = do_write(fd, &sz, sizeof(sz)); |
334 | if (ret < 0) | |
335 | return ret; | |
336 | ||
0050f7aa | 337 | evlist__for_each(evlist, evsel) { |
6606f873 | 338 | ret = do_write(fd, &evsel->attr, sz); |
fbe96f29 SE |
339 | if (ret < 0) |
340 | return ret; | |
341 | /* | |
342 | * write number of unique id per event | |
343 | * there is one id per instance of an event | |
344 | * | |
345 | * copy into an nri to be independent of the | |
346 | * type of ids, | |
347 | */ | |
6606f873 | 348 | nri = evsel->ids; |
fbe96f29 SE |
349 | ret = do_write(fd, &nri, sizeof(nri)); |
350 | if (ret < 0) | |
351 | return ret; | |
352 | ||
353 | /* | |
354 | * write event string as passed on cmdline | |
355 | */ | |
6606f873 | 356 | ret = do_write_string(fd, perf_evsel__name(evsel)); |
fbe96f29 SE |
357 | if (ret < 0) |
358 | return ret; | |
359 | /* | |
360 | * write unique ids for this event | |
361 | */ | |
6606f873 | 362 | ret = do_write(fd, evsel->id, evsel->ids * sizeof(u64)); |
fbe96f29 SE |
363 | if (ret < 0) |
364 | return ret; | |
365 | } | |
366 | return 0; | |
367 | } | |
368 | ||
1d037ca1 IT |
369 | static int write_cmdline(int fd, struct perf_header *h __maybe_unused, |
370 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
371 | { |
372 | char buf[MAXPATHLEN]; | |
373 | char proc[32]; | |
b6998692 ACM |
374 | u32 n; |
375 | int i, ret; | |
fbe96f29 SE |
376 | |
377 | /* | |
378 | * actual atual path to perf binary | |
379 | */ | |
380 | sprintf(proc, "/proc/%d/exe", getpid()); | |
381 | ret = readlink(proc, buf, sizeof(buf)); | |
382 | if (ret <= 0) | |
383 | return -1; | |
384 | ||
385 | /* readlink() does not add null termination */ | |
386 | buf[ret] = '\0'; | |
387 | ||
388 | /* account for binary path */ | |
b6998692 | 389 | n = perf_env.nr_cmdline + 1; |
fbe96f29 SE |
390 | |
391 | ret = do_write(fd, &n, sizeof(n)); | |
392 | if (ret < 0) | |
393 | return ret; | |
394 | ||
395 | ret = do_write_string(fd, buf); | |
396 | if (ret < 0) | |
397 | return ret; | |
398 | ||
b6998692 ACM |
399 | for (i = 0 ; i < perf_env.nr_cmdline; i++) { |
400 | ret = do_write_string(fd, perf_env.cmdline_argv[i]); | |
fbe96f29 SE |
401 | if (ret < 0) |
402 | return ret; | |
403 | } | |
404 | return 0; | |
405 | } | |
406 | ||
407 | #define CORE_SIB_FMT \ | |
408 | "/sys/devices/system/cpu/cpu%d/topology/core_siblings_list" | |
409 | #define THRD_SIB_FMT \ | |
410 | "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list" | |
411 | ||
412 | struct cpu_topo { | |
2bb00d2f | 413 | u32 cpu_nr; |
fbe96f29 SE |
414 | u32 core_sib; |
415 | u32 thread_sib; | |
416 | char **core_siblings; | |
417 | char **thread_siblings; | |
418 | }; | |
419 | ||
420 | static int build_cpu_topo(struct cpu_topo *tp, int cpu) | |
421 | { | |
422 | FILE *fp; | |
423 | char filename[MAXPATHLEN]; | |
424 | char *buf = NULL, *p; | |
425 | size_t len = 0; | |
c5885749 | 426 | ssize_t sret; |
fbe96f29 SE |
427 | u32 i = 0; |
428 | int ret = -1; | |
429 | ||
430 | sprintf(filename, CORE_SIB_FMT, cpu); | |
431 | fp = fopen(filename, "r"); | |
432 | if (!fp) | |
c5885749 | 433 | goto try_threads; |
fbe96f29 | 434 | |
c5885749 | 435 | sret = getline(&buf, &len, fp); |
fbe96f29 | 436 | fclose(fp); |
c5885749 SE |
437 | if (sret <= 0) |
438 | goto try_threads; | |
fbe96f29 SE |
439 | |
440 | p = strchr(buf, '\n'); | |
441 | if (p) | |
442 | *p = '\0'; | |
443 | ||
444 | for (i = 0; i < tp->core_sib; i++) { | |
445 | if (!strcmp(buf, tp->core_siblings[i])) | |
446 | break; | |
447 | } | |
448 | if (i == tp->core_sib) { | |
449 | tp->core_siblings[i] = buf; | |
450 | tp->core_sib++; | |
451 | buf = NULL; | |
452 | len = 0; | |
453 | } | |
c5885749 | 454 | ret = 0; |
fbe96f29 | 455 | |
c5885749 | 456 | try_threads: |
fbe96f29 SE |
457 | sprintf(filename, THRD_SIB_FMT, cpu); |
458 | fp = fopen(filename, "r"); | |
459 | if (!fp) | |
460 | goto done; | |
461 | ||
462 | if (getline(&buf, &len, fp) <= 0) | |
463 | goto done; | |
464 | ||
465 | p = strchr(buf, '\n'); | |
466 | if (p) | |
467 | *p = '\0'; | |
468 | ||
469 | for (i = 0; i < tp->thread_sib; i++) { | |
470 | if (!strcmp(buf, tp->thread_siblings[i])) | |
471 | break; | |
472 | } | |
473 | if (i == tp->thread_sib) { | |
474 | tp->thread_siblings[i] = buf; | |
475 | tp->thread_sib++; | |
476 | buf = NULL; | |
477 | } | |
478 | ret = 0; | |
479 | done: | |
480 | if(fp) | |
481 | fclose(fp); | |
482 | free(buf); | |
483 | return ret; | |
484 | } | |
485 | ||
486 | static void free_cpu_topo(struct cpu_topo *tp) | |
487 | { | |
488 | u32 i; | |
489 | ||
490 | if (!tp) | |
491 | return; | |
492 | ||
493 | for (i = 0 ; i < tp->core_sib; i++) | |
74cf249d | 494 | zfree(&tp->core_siblings[i]); |
fbe96f29 SE |
495 | |
496 | for (i = 0 ; i < tp->thread_sib; i++) | |
74cf249d | 497 | zfree(&tp->thread_siblings[i]); |
fbe96f29 SE |
498 | |
499 | free(tp); | |
500 | } | |
501 | ||
502 | static struct cpu_topo *build_cpu_topology(void) | |
503 | { | |
504 | struct cpu_topo *tp; | |
505 | void *addr; | |
506 | u32 nr, i; | |
aa36ddd7 | 507 | size_t sz; |
fbe96f29 SE |
508 | long ncpus; |
509 | int ret = -1; | |
510 | ||
511 | ncpus = sysconf(_SC_NPROCESSORS_CONF); | |
512 | if (ncpus < 0) | |
513 | return NULL; | |
514 | ||
515 | nr = (u32)(ncpus & UINT_MAX); | |
516 | ||
517 | sz = nr * sizeof(char *); | |
518 | ||
aa36ddd7 | 519 | addr = calloc(1, sizeof(*tp) + 2 * sz); |
fbe96f29 SE |
520 | if (!addr) |
521 | return NULL; | |
522 | ||
523 | tp = addr; | |
2bb00d2f | 524 | tp->cpu_nr = nr; |
fbe96f29 SE |
525 | addr += sizeof(*tp); |
526 | tp->core_siblings = addr; | |
527 | addr += sz; | |
528 | tp->thread_siblings = addr; | |
529 | ||
530 | for (i = 0; i < nr; i++) { | |
531 | ret = build_cpu_topo(tp, i); | |
532 | if (ret < 0) | |
533 | break; | |
534 | } | |
535 | if (ret) { | |
536 | free_cpu_topo(tp); | |
537 | tp = NULL; | |
538 | } | |
539 | return tp; | |
540 | } | |
541 | ||
1d037ca1 IT |
542 | static int write_cpu_topology(int fd, struct perf_header *h __maybe_unused, |
543 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
544 | { |
545 | struct cpu_topo *tp; | |
546 | u32 i; | |
aa36ddd7 | 547 | int ret, j; |
fbe96f29 SE |
548 | |
549 | tp = build_cpu_topology(); | |
550 | if (!tp) | |
551 | return -1; | |
552 | ||
553 | ret = do_write(fd, &tp->core_sib, sizeof(tp->core_sib)); | |
554 | if (ret < 0) | |
555 | goto done; | |
556 | ||
557 | for (i = 0; i < tp->core_sib; i++) { | |
558 | ret = do_write_string(fd, tp->core_siblings[i]); | |
559 | if (ret < 0) | |
560 | goto done; | |
561 | } | |
562 | ret = do_write(fd, &tp->thread_sib, sizeof(tp->thread_sib)); | |
563 | if (ret < 0) | |
564 | goto done; | |
565 | ||
566 | for (i = 0; i < tp->thread_sib; i++) { | |
567 | ret = do_write_string(fd, tp->thread_siblings[i]); | |
568 | if (ret < 0) | |
569 | break; | |
570 | } | |
2bb00d2f | 571 | |
aa36ddd7 ACM |
572 | ret = perf_env__read_cpu_topology_map(&perf_env); |
573 | if (ret < 0) | |
574 | goto done; | |
575 | ||
576 | for (j = 0; j < perf_env.nr_cpus_avail; j++) { | |
577 | ret = do_write(fd, &perf_env.cpu[j].core_id, | |
578 | sizeof(perf_env.cpu[j].core_id)); | |
2bb00d2f KL |
579 | if (ret < 0) |
580 | return ret; | |
aa36ddd7 ACM |
581 | ret = do_write(fd, &perf_env.cpu[j].socket_id, |
582 | sizeof(perf_env.cpu[j].socket_id)); | |
2bb00d2f KL |
583 | if (ret < 0) |
584 | return ret; | |
585 | } | |
fbe96f29 SE |
586 | done: |
587 | free_cpu_topo(tp); | |
588 | return ret; | |
589 | } | |
590 | ||
591 | ||
592 | ||
1d037ca1 IT |
593 | static int write_total_mem(int fd, struct perf_header *h __maybe_unused, |
594 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
595 | { |
596 | char *buf = NULL; | |
597 | FILE *fp; | |
598 | size_t len = 0; | |
599 | int ret = -1, n; | |
600 | uint64_t mem; | |
601 | ||
602 | fp = fopen("/proc/meminfo", "r"); | |
603 | if (!fp) | |
604 | return -1; | |
605 | ||
606 | while (getline(&buf, &len, fp) > 0) { | |
607 | ret = strncmp(buf, "MemTotal:", 9); | |
608 | if (!ret) | |
609 | break; | |
610 | } | |
611 | if (!ret) { | |
612 | n = sscanf(buf, "%*s %"PRIu64, &mem); | |
613 | if (n == 1) | |
614 | ret = do_write(fd, &mem, sizeof(mem)); | |
ed307758 WN |
615 | } else |
616 | ret = -1; | |
fbe96f29 SE |
617 | free(buf); |
618 | fclose(fp); | |
619 | return ret; | |
620 | } | |
621 | ||
622 | static int write_topo_node(int fd, int node) | |
623 | { | |
624 | char str[MAXPATHLEN]; | |
625 | char field[32]; | |
626 | char *buf = NULL, *p; | |
627 | size_t len = 0; | |
628 | FILE *fp; | |
629 | u64 mem_total, mem_free, mem; | |
630 | int ret = -1; | |
631 | ||
632 | sprintf(str, "/sys/devices/system/node/node%d/meminfo", node); | |
633 | fp = fopen(str, "r"); | |
634 | if (!fp) | |
635 | return -1; | |
636 | ||
637 | while (getline(&buf, &len, fp) > 0) { | |
638 | /* skip over invalid lines */ | |
639 | if (!strchr(buf, ':')) | |
640 | continue; | |
a761a2d8 | 641 | if (sscanf(buf, "%*s %*d %31s %"PRIu64, field, &mem) != 2) |
fbe96f29 SE |
642 | goto done; |
643 | if (!strcmp(field, "MemTotal:")) | |
644 | mem_total = mem; | |
645 | if (!strcmp(field, "MemFree:")) | |
646 | mem_free = mem; | |
647 | } | |
648 | ||
649 | fclose(fp); | |
5809fde0 | 650 | fp = NULL; |
fbe96f29 SE |
651 | |
652 | ret = do_write(fd, &mem_total, sizeof(u64)); | |
653 | if (ret) | |
654 | goto done; | |
655 | ||
656 | ret = do_write(fd, &mem_free, sizeof(u64)); | |
657 | if (ret) | |
658 | goto done; | |
659 | ||
660 | ret = -1; | |
661 | sprintf(str, "/sys/devices/system/node/node%d/cpulist", node); | |
662 | ||
663 | fp = fopen(str, "r"); | |
664 | if (!fp) | |
665 | goto done; | |
666 | ||
667 | if (getline(&buf, &len, fp) <= 0) | |
668 | goto done; | |
669 | ||
670 | p = strchr(buf, '\n'); | |
671 | if (p) | |
672 | *p = '\0'; | |
673 | ||
674 | ret = do_write_string(fd, buf); | |
675 | done: | |
676 | free(buf); | |
5809fde0 TJ |
677 | if (fp) |
678 | fclose(fp); | |
fbe96f29 SE |
679 | return ret; |
680 | } | |
681 | ||
1d037ca1 IT |
682 | static int write_numa_topology(int fd, struct perf_header *h __maybe_unused, |
683 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
684 | { |
685 | char *buf = NULL; | |
686 | size_t len = 0; | |
687 | FILE *fp; | |
688 | struct cpu_map *node_map = NULL; | |
689 | char *c; | |
690 | u32 nr, i, j; | |
691 | int ret = -1; | |
692 | ||
693 | fp = fopen("/sys/devices/system/node/online", "r"); | |
694 | if (!fp) | |
695 | return -1; | |
696 | ||
697 | if (getline(&buf, &len, fp) <= 0) | |
698 | goto done; | |
699 | ||
700 | c = strchr(buf, '\n'); | |
701 | if (c) | |
702 | *c = '\0'; | |
703 | ||
704 | node_map = cpu_map__new(buf); | |
705 | if (!node_map) | |
706 | goto done; | |
707 | ||
708 | nr = (u32)node_map->nr; | |
709 | ||
710 | ret = do_write(fd, &nr, sizeof(nr)); | |
711 | if (ret < 0) | |
712 | goto done; | |
713 | ||
714 | for (i = 0; i < nr; i++) { | |
715 | j = (u32)node_map->map[i]; | |
716 | ret = do_write(fd, &j, sizeof(j)); | |
717 | if (ret < 0) | |
718 | break; | |
719 | ||
720 | ret = write_topo_node(fd, i); | |
721 | if (ret < 0) | |
722 | break; | |
723 | } | |
724 | done: | |
725 | free(buf); | |
726 | fclose(fp); | |
5191d887 | 727 | cpu_map__put(node_map); |
fbe96f29 SE |
728 | return ret; |
729 | } | |
730 | ||
50a9667c RR |
731 | /* |
732 | * File format: | |
733 | * | |
734 | * struct pmu_mappings { | |
735 | * u32 pmu_num; | |
736 | * struct pmu_map { | |
737 | * u32 type; | |
738 | * char name[]; | |
739 | * }[pmu_num]; | |
740 | * }; | |
741 | */ | |
742 | ||
1d037ca1 IT |
743 | static int write_pmu_mappings(int fd, struct perf_header *h __maybe_unused, |
744 | struct perf_evlist *evlist __maybe_unused) | |
50a9667c RR |
745 | { |
746 | struct perf_pmu *pmu = NULL; | |
747 | off_t offset = lseek(fd, 0, SEEK_CUR); | |
748 | __u32 pmu_num = 0; | |
5323f60c | 749 | int ret; |
50a9667c RR |
750 | |
751 | /* write real pmu_num later */ | |
5323f60c NK |
752 | ret = do_write(fd, &pmu_num, sizeof(pmu_num)); |
753 | if (ret < 0) | |
754 | return ret; | |
50a9667c RR |
755 | |
756 | while ((pmu = perf_pmu__scan(pmu))) { | |
757 | if (!pmu->name) | |
758 | continue; | |
759 | pmu_num++; | |
5323f60c NK |
760 | |
761 | ret = do_write(fd, &pmu->type, sizeof(pmu->type)); | |
762 | if (ret < 0) | |
763 | return ret; | |
764 | ||
765 | ret = do_write_string(fd, pmu->name); | |
766 | if (ret < 0) | |
767 | return ret; | |
50a9667c RR |
768 | } |
769 | ||
770 | if (pwrite(fd, &pmu_num, sizeof(pmu_num), offset) != sizeof(pmu_num)) { | |
771 | /* discard all */ | |
772 | lseek(fd, offset, SEEK_SET); | |
773 | return -1; | |
774 | } | |
775 | ||
776 | return 0; | |
777 | } | |
778 | ||
a8bb559b NK |
779 | /* |
780 | * File format: | |
781 | * | |
782 | * struct group_descs { | |
783 | * u32 nr_groups; | |
784 | * struct group_desc { | |
785 | * char name[]; | |
786 | * u32 leader_idx; | |
787 | * u32 nr_members; | |
788 | * }[nr_groups]; | |
789 | * }; | |
790 | */ | |
791 | static int write_group_desc(int fd, struct perf_header *h __maybe_unused, | |
792 | struct perf_evlist *evlist) | |
793 | { | |
794 | u32 nr_groups = evlist->nr_groups; | |
795 | struct perf_evsel *evsel; | |
796 | int ret; | |
797 | ||
798 | ret = do_write(fd, &nr_groups, sizeof(nr_groups)); | |
799 | if (ret < 0) | |
800 | return ret; | |
801 | ||
0050f7aa | 802 | evlist__for_each(evlist, evsel) { |
a8bb559b NK |
803 | if (perf_evsel__is_group_leader(evsel) && |
804 | evsel->nr_members > 1) { | |
805 | const char *name = evsel->group_name ?: "{anon_group}"; | |
806 | u32 leader_idx = evsel->idx; | |
807 | u32 nr_members = evsel->nr_members; | |
808 | ||
809 | ret = do_write_string(fd, name); | |
810 | if (ret < 0) | |
811 | return ret; | |
812 | ||
813 | ret = do_write(fd, &leader_idx, sizeof(leader_idx)); | |
814 | if (ret < 0) | |
815 | return ret; | |
816 | ||
817 | ret = do_write(fd, &nr_members, sizeof(nr_members)); | |
818 | if (ret < 0) | |
819 | return ret; | |
820 | } | |
821 | } | |
822 | return 0; | |
823 | } | |
824 | ||
fbe96f29 SE |
825 | /* |
826 | * default get_cpuid(): nothing gets recorded | |
827 | * actual implementation must be in arch/$(ARCH)/util/header.c | |
828 | */ | |
1d037ca1 IT |
829 | int __attribute__ ((weak)) get_cpuid(char *buffer __maybe_unused, |
830 | size_t sz __maybe_unused) | |
fbe96f29 SE |
831 | { |
832 | return -1; | |
833 | } | |
834 | ||
1d037ca1 IT |
835 | static int write_cpuid(int fd, struct perf_header *h __maybe_unused, |
836 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
837 | { |
838 | char buffer[64]; | |
839 | int ret; | |
840 | ||
841 | ret = get_cpuid(buffer, sizeof(buffer)); | |
842 | if (!ret) | |
843 | goto write_it; | |
844 | ||
845 | return -1; | |
846 | write_it: | |
847 | return do_write_string(fd, buffer); | |
848 | } | |
849 | ||
1d037ca1 IT |
850 | static int write_branch_stack(int fd __maybe_unused, |
851 | struct perf_header *h __maybe_unused, | |
852 | struct perf_evlist *evlist __maybe_unused) | |
330aa675 SE |
853 | { |
854 | return 0; | |
855 | } | |
856 | ||
99fa2984 | 857 | static int write_auxtrace(int fd, struct perf_header *h, |
4025ea40 AH |
858 | struct perf_evlist *evlist __maybe_unused) |
859 | { | |
99fa2984 AH |
860 | struct perf_session *session; |
861 | int err; | |
862 | ||
863 | session = container_of(h, struct perf_session, header); | |
864 | ||
865 | err = auxtrace_index__write(fd, &session->auxtrace_index); | |
866 | if (err < 0) | |
867 | pr_err("Failed to write auxtrace index\n"); | |
868 | return err; | |
4025ea40 AH |
869 | } |
870 | ||
7e94cfcc NK |
871 | static void print_hostname(struct perf_header *ph, int fd __maybe_unused, |
872 | FILE *fp) | |
fbe96f29 | 873 | { |
7e94cfcc | 874 | fprintf(fp, "# hostname : %s\n", ph->env.hostname); |
fbe96f29 SE |
875 | } |
876 | ||
7e94cfcc NK |
877 | static void print_osrelease(struct perf_header *ph, int fd __maybe_unused, |
878 | FILE *fp) | |
fbe96f29 | 879 | { |
7e94cfcc | 880 | fprintf(fp, "# os release : %s\n", ph->env.os_release); |
fbe96f29 SE |
881 | } |
882 | ||
7e94cfcc | 883 | static void print_arch(struct perf_header *ph, int fd __maybe_unused, FILE *fp) |
fbe96f29 | 884 | { |
7e94cfcc | 885 | fprintf(fp, "# arch : %s\n", ph->env.arch); |
fbe96f29 SE |
886 | } |
887 | ||
7e94cfcc NK |
888 | static void print_cpudesc(struct perf_header *ph, int fd __maybe_unused, |
889 | FILE *fp) | |
fbe96f29 | 890 | { |
7e94cfcc | 891 | fprintf(fp, "# cpudesc : %s\n", ph->env.cpu_desc); |
fbe96f29 SE |
892 | } |
893 | ||
7e94cfcc NK |
894 | static void print_nrcpus(struct perf_header *ph, int fd __maybe_unused, |
895 | FILE *fp) | |
fbe96f29 | 896 | { |
7e94cfcc NK |
897 | fprintf(fp, "# nrcpus online : %u\n", ph->env.nr_cpus_online); |
898 | fprintf(fp, "# nrcpus avail : %u\n", ph->env.nr_cpus_avail); | |
fbe96f29 SE |
899 | } |
900 | ||
7e94cfcc NK |
901 | static void print_version(struct perf_header *ph, int fd __maybe_unused, |
902 | FILE *fp) | |
fbe96f29 | 903 | { |
7e94cfcc | 904 | fprintf(fp, "# perf version : %s\n", ph->env.version); |
fbe96f29 SE |
905 | } |
906 | ||
7e94cfcc NK |
907 | static void print_cmdline(struct perf_header *ph, int fd __maybe_unused, |
908 | FILE *fp) | |
fbe96f29 | 909 | { |
7e94cfcc | 910 | int nr, i; |
fbe96f29 | 911 | |
7e94cfcc | 912 | nr = ph->env.nr_cmdline; |
fbe96f29 SE |
913 | |
914 | fprintf(fp, "# cmdline : "); | |
915 | ||
768dd3f3 JO |
916 | for (i = 0; i < nr; i++) |
917 | fprintf(fp, "%s ", ph->env.cmdline_argv[i]); | |
fbe96f29 SE |
918 | fputc('\n', fp); |
919 | } | |
920 | ||
7e94cfcc NK |
921 | static void print_cpu_topology(struct perf_header *ph, int fd __maybe_unused, |
922 | FILE *fp) | |
fbe96f29 | 923 | { |
7e94cfcc | 924 | int nr, i; |
fbe96f29 | 925 | char *str; |
2bb00d2f | 926 | int cpu_nr = ph->env.nr_cpus_online; |
fbe96f29 | 927 | |
7e94cfcc NK |
928 | nr = ph->env.nr_sibling_cores; |
929 | str = ph->env.sibling_cores; | |
fbe96f29 SE |
930 | |
931 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 932 | fprintf(fp, "# sibling cores : %s\n", str); |
7e94cfcc | 933 | str += strlen(str) + 1; |
fbe96f29 SE |
934 | } |
935 | ||
7e94cfcc NK |
936 | nr = ph->env.nr_sibling_threads; |
937 | str = ph->env.sibling_threads; | |
fbe96f29 SE |
938 | |
939 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 940 | fprintf(fp, "# sibling threads : %s\n", str); |
7e94cfcc | 941 | str += strlen(str) + 1; |
fbe96f29 | 942 | } |
2bb00d2f KL |
943 | |
944 | if (ph->env.cpu != NULL) { | |
945 | for (i = 0; i < cpu_nr; i++) | |
946 | fprintf(fp, "# CPU %d: Core ID %d, Socket ID %d\n", i, | |
947 | ph->env.cpu[i].core_id, ph->env.cpu[i].socket_id); | |
948 | } else | |
949 | fprintf(fp, "# Core ID and Socket ID information is not available\n"); | |
fbe96f29 SE |
950 | } |
951 | ||
4e1b9c67 | 952 | static void free_event_desc(struct perf_evsel *events) |
fbe96f29 | 953 | { |
4e1b9c67 RR |
954 | struct perf_evsel *evsel; |
955 | ||
956 | if (!events) | |
957 | return; | |
958 | ||
959 | for (evsel = events; evsel->attr.size; evsel++) { | |
74cf249d ACM |
960 | zfree(&evsel->name); |
961 | zfree(&evsel->id); | |
4e1b9c67 RR |
962 | } |
963 | ||
964 | free(events); | |
965 | } | |
966 | ||
967 | static struct perf_evsel * | |
968 | read_event_desc(struct perf_header *ph, int fd) | |
969 | { | |
970 | struct perf_evsel *evsel, *events = NULL; | |
971 | u64 *id; | |
fbe96f29 | 972 | void *buf = NULL; |
62db9068 SE |
973 | u32 nre, sz, nr, i, j; |
974 | ssize_t ret; | |
975 | size_t msz; | |
fbe96f29 SE |
976 | |
977 | /* number of events */ | |
5323f60c | 978 | ret = readn(fd, &nre, sizeof(nre)); |
fbe96f29 SE |
979 | if (ret != (ssize_t)sizeof(nre)) |
980 | goto error; | |
981 | ||
982 | if (ph->needs_swap) | |
983 | nre = bswap_32(nre); | |
984 | ||
5323f60c | 985 | ret = readn(fd, &sz, sizeof(sz)); |
fbe96f29 SE |
986 | if (ret != (ssize_t)sizeof(sz)) |
987 | goto error; | |
988 | ||
989 | if (ph->needs_swap) | |
990 | sz = bswap_32(sz); | |
991 | ||
62db9068 | 992 | /* buffer to hold on file attr struct */ |
fbe96f29 SE |
993 | buf = malloc(sz); |
994 | if (!buf) | |
995 | goto error; | |
996 | ||
4e1b9c67 RR |
997 | /* the last event terminates with evsel->attr.size == 0: */ |
998 | events = calloc(nre + 1, sizeof(*events)); | |
999 | if (!events) | |
1000 | goto error; | |
1001 | ||
1002 | msz = sizeof(evsel->attr); | |
9fafd98f | 1003 | if (sz < msz) |
fbe96f29 SE |
1004 | msz = sz; |
1005 | ||
4e1b9c67 RR |
1006 | for (i = 0, evsel = events; i < nre; evsel++, i++) { |
1007 | evsel->idx = i; | |
fbe96f29 | 1008 | |
62db9068 SE |
1009 | /* |
1010 | * must read entire on-file attr struct to | |
1011 | * sync up with layout. | |
1012 | */ | |
5323f60c | 1013 | ret = readn(fd, buf, sz); |
fbe96f29 SE |
1014 | if (ret != (ssize_t)sz) |
1015 | goto error; | |
1016 | ||
1017 | if (ph->needs_swap) | |
1018 | perf_event__attr_swap(buf); | |
1019 | ||
4e1b9c67 | 1020 | memcpy(&evsel->attr, buf, msz); |
fbe96f29 | 1021 | |
5323f60c | 1022 | ret = readn(fd, &nr, sizeof(nr)); |
fbe96f29 SE |
1023 | if (ret != (ssize_t)sizeof(nr)) |
1024 | goto error; | |
1025 | ||
0807d2d8 | 1026 | if (ph->needs_swap) { |
fbe96f29 | 1027 | nr = bswap_32(nr); |
0807d2d8 ACM |
1028 | evsel->needs_swap = true; |
1029 | } | |
fbe96f29 | 1030 | |
4e1b9c67 RR |
1031 | evsel->name = do_read_string(fd, ph); |
1032 | ||
1033 | if (!nr) | |
1034 | continue; | |
1035 | ||
1036 | id = calloc(nr, sizeof(*id)); | |
1037 | if (!id) | |
1038 | goto error; | |
1039 | evsel->ids = nr; | |
1040 | evsel->id = id; | |
1041 | ||
1042 | for (j = 0 ; j < nr; j++) { | |
5323f60c | 1043 | ret = readn(fd, id, sizeof(*id)); |
4e1b9c67 RR |
1044 | if (ret != (ssize_t)sizeof(*id)) |
1045 | goto error; | |
1046 | if (ph->needs_swap) | |
1047 | *id = bswap_64(*id); | |
1048 | id++; | |
1049 | } | |
1050 | } | |
1051 | out: | |
04662523 | 1052 | free(buf); |
4e1b9c67 RR |
1053 | return events; |
1054 | error: | |
4cc97614 | 1055 | free_event_desc(events); |
4e1b9c67 RR |
1056 | events = NULL; |
1057 | goto out; | |
1058 | } | |
1059 | ||
2c5e8c52 PZ |
1060 | static int __desc_attr__fprintf(FILE *fp, const char *name, const char *val, |
1061 | void *priv __attribute__((unused))) | |
1062 | { | |
1063 | return fprintf(fp, ", %s = %s", name, val); | |
1064 | } | |
1065 | ||
4e1b9c67 RR |
1066 | static void print_event_desc(struct perf_header *ph, int fd, FILE *fp) |
1067 | { | |
1068 | struct perf_evsel *evsel, *events = read_event_desc(ph, fd); | |
1069 | u32 j; | |
1070 | u64 *id; | |
1071 | ||
1072 | if (!events) { | |
1073 | fprintf(fp, "# event desc: not available or unable to read\n"); | |
1074 | return; | |
1075 | } | |
1076 | ||
1077 | for (evsel = events; evsel->attr.size; evsel++) { | |
1078 | fprintf(fp, "# event : name = %s, ", evsel->name); | |
fbe96f29 | 1079 | |
4e1b9c67 | 1080 | if (evsel->ids) { |
fbe96f29 | 1081 | fprintf(fp, ", id = {"); |
4e1b9c67 RR |
1082 | for (j = 0, id = evsel->id; j < evsel->ids; j++, id++) { |
1083 | if (j) | |
1084 | fputc(',', fp); | |
1085 | fprintf(fp, " %"PRIu64, *id); | |
1086 | } | |
fbe96f29 | 1087 | fprintf(fp, " }"); |
4e1b9c67 | 1088 | } |
814c8c38 | 1089 | |
2c5e8c52 | 1090 | perf_event_attr__fprintf(fp, &evsel->attr, __desc_attr__fprintf, NULL); |
4e1b9c67 | 1091 | |
fbe96f29 SE |
1092 | fputc('\n', fp); |
1093 | } | |
4e1b9c67 RR |
1094 | |
1095 | free_event_desc(events); | |
fbe96f29 SE |
1096 | } |
1097 | ||
7e94cfcc | 1098 | static void print_total_mem(struct perf_header *ph, int fd __maybe_unused, |
1d037ca1 | 1099 | FILE *fp) |
fbe96f29 | 1100 | { |
7e94cfcc | 1101 | fprintf(fp, "# total memory : %Lu kB\n", ph->env.total_mem); |
fbe96f29 SE |
1102 | } |
1103 | ||
7e94cfcc | 1104 | static void print_numa_topology(struct perf_header *ph, int fd __maybe_unused, |
1d037ca1 | 1105 | FILE *fp) |
fbe96f29 | 1106 | { |
fbe96f29 | 1107 | u32 nr, c, i; |
7e94cfcc | 1108 | char *str, *tmp; |
fbe96f29 SE |
1109 | uint64_t mem_total, mem_free; |
1110 | ||
1111 | /* nr nodes */ | |
7e94cfcc NK |
1112 | nr = ph->env.nr_numa_nodes; |
1113 | str = ph->env.numa_nodes; | |
fbe96f29 SE |
1114 | |
1115 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 1116 | /* node number */ |
7e94cfcc NK |
1117 | c = strtoul(str, &tmp, 0); |
1118 | if (*tmp != ':') | |
fbe96f29 SE |
1119 | goto error; |
1120 | ||
7e94cfcc NK |
1121 | str = tmp + 1; |
1122 | mem_total = strtoull(str, &tmp, 0); | |
1123 | if (*tmp != ':') | |
fbe96f29 SE |
1124 | goto error; |
1125 | ||
7e94cfcc NK |
1126 | str = tmp + 1; |
1127 | mem_free = strtoull(str, &tmp, 0); | |
1128 | if (*tmp != ':') | |
fbe96f29 SE |
1129 | goto error; |
1130 | ||
fbe96f29 SE |
1131 | fprintf(fp, "# node%u meminfo : total = %"PRIu64" kB," |
1132 | " free = %"PRIu64" kB\n", | |
7e94cfcc | 1133 | c, mem_total, mem_free); |
fbe96f29 | 1134 | |
7e94cfcc | 1135 | str = tmp + 1; |
fbe96f29 | 1136 | fprintf(fp, "# node%u cpu list : %s\n", c, str); |
1234471e NK |
1137 | |
1138 | str += strlen(str) + 1; | |
fbe96f29 SE |
1139 | } |
1140 | return; | |
1141 | error: | |
1142 | fprintf(fp, "# numa topology : not available\n"); | |
1143 | } | |
1144 | ||
7e94cfcc | 1145 | static void print_cpuid(struct perf_header *ph, int fd __maybe_unused, FILE *fp) |
fbe96f29 | 1146 | { |
7e94cfcc | 1147 | fprintf(fp, "# cpuid : %s\n", ph->env.cpuid); |
fbe96f29 SE |
1148 | } |
1149 | ||
1d037ca1 | 1150 | static void print_branch_stack(struct perf_header *ph __maybe_unused, |
7e94cfcc | 1151 | int fd __maybe_unused, FILE *fp) |
330aa675 SE |
1152 | { |
1153 | fprintf(fp, "# contains samples with branch stack\n"); | |
1154 | } | |
1155 | ||
4025ea40 AH |
1156 | static void print_auxtrace(struct perf_header *ph __maybe_unused, |
1157 | int fd __maybe_unused, FILE *fp) | |
1158 | { | |
1159 | fprintf(fp, "# contains AUX area data (e.g. instruction trace)\n"); | |
1160 | } | |
1161 | ||
7e94cfcc NK |
1162 | static void print_pmu_mappings(struct perf_header *ph, int fd __maybe_unused, |
1163 | FILE *fp) | |
50a9667c RR |
1164 | { |
1165 | const char *delimiter = "# pmu mappings: "; | |
7e94cfcc | 1166 | char *str, *tmp; |
50a9667c RR |
1167 | u32 pmu_num; |
1168 | u32 type; | |
1169 | ||
7e94cfcc | 1170 | pmu_num = ph->env.nr_pmu_mappings; |
50a9667c RR |
1171 | if (!pmu_num) { |
1172 | fprintf(fp, "# pmu mappings: not available\n"); | |
1173 | return; | |
1174 | } | |
1175 | ||
7e94cfcc NK |
1176 | str = ph->env.pmu_mappings; |
1177 | ||
50a9667c | 1178 | while (pmu_num) { |
7e94cfcc NK |
1179 | type = strtoul(str, &tmp, 0); |
1180 | if (*tmp != ':') | |
1181 | goto error; | |
1182 | ||
1183 | str = tmp + 1; | |
1184 | fprintf(fp, "%s%s = %" PRIu32, delimiter, str, type); | |
be4a2ded | 1185 | |
50a9667c | 1186 | delimiter = ", "; |
7e94cfcc NK |
1187 | str += strlen(str) + 1; |
1188 | pmu_num--; | |
50a9667c RR |
1189 | } |
1190 | ||
1191 | fprintf(fp, "\n"); | |
1192 | ||
1193 | if (!pmu_num) | |
1194 | return; | |
1195 | error: | |
1196 | fprintf(fp, "# pmu mappings: unable to read\n"); | |
1197 | } | |
1198 | ||
a8bb559b NK |
1199 | static void print_group_desc(struct perf_header *ph, int fd __maybe_unused, |
1200 | FILE *fp) | |
1201 | { | |
1202 | struct perf_session *session; | |
1203 | struct perf_evsel *evsel; | |
1204 | u32 nr = 0; | |
1205 | ||
1206 | session = container_of(ph, struct perf_session, header); | |
1207 | ||
0050f7aa | 1208 | evlist__for_each(session->evlist, evsel) { |
a8bb559b NK |
1209 | if (perf_evsel__is_group_leader(evsel) && |
1210 | evsel->nr_members > 1) { | |
1211 | fprintf(fp, "# group: %s{%s", evsel->group_name ?: "", | |
1212 | perf_evsel__name(evsel)); | |
1213 | ||
1214 | nr = evsel->nr_members - 1; | |
1215 | } else if (nr) { | |
1216 | fprintf(fp, ",%s", perf_evsel__name(evsel)); | |
1217 | ||
1218 | if (--nr == 0) | |
1219 | fprintf(fp, "}\n"); | |
1220 | } | |
1221 | } | |
1222 | } | |
1223 | ||
08d95bd2 RR |
1224 | static int __event_process_build_id(struct build_id_event *bev, |
1225 | char *filename, | |
1226 | struct perf_session *session) | |
1227 | { | |
1228 | int err = -1; | |
08d95bd2 | 1229 | struct machine *machine; |
1f121b03 | 1230 | u16 cpumode; |
08d95bd2 RR |
1231 | struct dso *dso; |
1232 | enum dso_kernel_type dso_type; | |
1233 | ||
1234 | machine = perf_session__findnew_machine(session, bev->pid); | |
1235 | if (!machine) | |
1236 | goto out; | |
1237 | ||
1f121b03 | 1238 | cpumode = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
08d95bd2 | 1239 | |
1f121b03 | 1240 | switch (cpumode) { |
08d95bd2 RR |
1241 | case PERF_RECORD_MISC_KERNEL: |
1242 | dso_type = DSO_TYPE_KERNEL; | |
08d95bd2 RR |
1243 | break; |
1244 | case PERF_RECORD_MISC_GUEST_KERNEL: | |
1245 | dso_type = DSO_TYPE_GUEST_KERNEL; | |
08d95bd2 RR |
1246 | break; |
1247 | case PERF_RECORD_MISC_USER: | |
1248 | case PERF_RECORD_MISC_GUEST_USER: | |
1249 | dso_type = DSO_TYPE_USER; | |
08d95bd2 RR |
1250 | break; |
1251 | default: | |
1252 | goto out; | |
1253 | } | |
1254 | ||
aa7cc2ae | 1255 | dso = machine__findnew_dso(machine, filename); |
08d95bd2 RR |
1256 | if (dso != NULL) { |
1257 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; | |
1258 | ||
1259 | dso__set_build_id(dso, &bev->build_id); | |
1260 | ||
1f121b03 | 1261 | if (!is_kernel_module(filename, cpumode)) |
08d95bd2 RR |
1262 | dso->kernel = dso_type; |
1263 | ||
1264 | build_id__sprintf(dso->build_id, sizeof(dso->build_id), | |
1265 | sbuild_id); | |
1266 | pr_debug("build id event received for %s: %s\n", | |
1267 | dso->long_name, sbuild_id); | |
d3a7c489 | 1268 | dso__put(dso); |
08d95bd2 RR |
1269 | } |
1270 | ||
1271 | err = 0; | |
1272 | out: | |
1273 | return err; | |
1274 | } | |
1275 | ||
1276 | static int perf_header__read_build_ids_abi_quirk(struct perf_header *header, | |
1277 | int input, u64 offset, u64 size) | |
1278 | { | |
1279 | struct perf_session *session = container_of(header, struct perf_session, header); | |
1280 | struct { | |
1281 | struct perf_event_header header; | |
9ac3e487 | 1282 | u8 build_id[PERF_ALIGN(BUILD_ID_SIZE, sizeof(u64))]; |
08d95bd2 RR |
1283 | char filename[0]; |
1284 | } old_bev; | |
1285 | struct build_id_event bev; | |
1286 | char filename[PATH_MAX]; | |
1287 | u64 limit = offset + size; | |
1288 | ||
1289 | while (offset < limit) { | |
1290 | ssize_t len; | |
1291 | ||
5323f60c | 1292 | if (readn(input, &old_bev, sizeof(old_bev)) != sizeof(old_bev)) |
08d95bd2 RR |
1293 | return -1; |
1294 | ||
1295 | if (header->needs_swap) | |
1296 | perf_event_header__bswap(&old_bev.header); | |
1297 | ||
1298 | len = old_bev.header.size - sizeof(old_bev); | |
5323f60c | 1299 | if (readn(input, filename, len) != len) |
08d95bd2 RR |
1300 | return -1; |
1301 | ||
1302 | bev.header = old_bev.header; | |
1303 | ||
1304 | /* | |
1305 | * As the pid is the missing value, we need to fill | |
1306 | * it properly. The header.misc value give us nice hint. | |
1307 | */ | |
1308 | bev.pid = HOST_KERNEL_ID; | |
1309 | if (bev.header.misc == PERF_RECORD_MISC_GUEST_USER || | |
1310 | bev.header.misc == PERF_RECORD_MISC_GUEST_KERNEL) | |
1311 | bev.pid = DEFAULT_GUEST_KERNEL_ID; | |
1312 | ||
1313 | memcpy(bev.build_id, old_bev.build_id, sizeof(bev.build_id)); | |
1314 | __event_process_build_id(&bev, filename, session); | |
1315 | ||
1316 | offset += bev.header.size; | |
1317 | } | |
1318 | ||
1319 | return 0; | |
1320 | } | |
1321 | ||
1322 | static int perf_header__read_build_ids(struct perf_header *header, | |
1323 | int input, u64 offset, u64 size) | |
1324 | { | |
1325 | struct perf_session *session = container_of(header, struct perf_session, header); | |
1326 | struct build_id_event bev; | |
1327 | char filename[PATH_MAX]; | |
1328 | u64 limit = offset + size, orig_offset = offset; | |
1329 | int err = -1; | |
1330 | ||
1331 | while (offset < limit) { | |
1332 | ssize_t len; | |
1333 | ||
5323f60c | 1334 | if (readn(input, &bev, sizeof(bev)) != sizeof(bev)) |
08d95bd2 RR |
1335 | goto out; |
1336 | ||
1337 | if (header->needs_swap) | |
1338 | perf_event_header__bswap(&bev.header); | |
1339 | ||
1340 | len = bev.header.size - sizeof(bev); | |
5323f60c | 1341 | if (readn(input, filename, len) != len) |
08d95bd2 RR |
1342 | goto out; |
1343 | /* | |
1344 | * The a1645ce1 changeset: | |
1345 | * | |
1346 | * "perf: 'perf kvm' tool for monitoring guest performance from host" | |
1347 | * | |
1348 | * Added a field to struct build_id_event that broke the file | |
1349 | * format. | |
1350 | * | |
1351 | * Since the kernel build-id is the first entry, process the | |
1352 | * table using the old format if the well known | |
1353 | * '[kernel.kallsyms]' string for the kernel build-id has the | |
1354 | * first 4 characters chopped off (where the pid_t sits). | |
1355 | */ | |
1356 | if (memcmp(filename, "nel.kallsyms]", 13) == 0) { | |
1357 | if (lseek(input, orig_offset, SEEK_SET) == (off_t)-1) | |
1358 | return -1; | |
1359 | return perf_header__read_build_ids_abi_quirk(header, input, offset, size); | |
1360 | } | |
1361 | ||
1362 | __event_process_build_id(&bev, filename, session); | |
1363 | ||
1364 | offset += bev.header.size; | |
1365 | } | |
1366 | err = 0; | |
1367 | out: | |
1368 | return err; | |
1369 | } | |
1370 | ||
3d7eb86b NK |
1371 | static int process_tracing_data(struct perf_file_section *section __maybe_unused, |
1372 | struct perf_header *ph __maybe_unused, | |
1373 | int fd, void *data) | |
f1c67db7 | 1374 | { |
3dce2ce3 NK |
1375 | ssize_t ret = trace_report(fd, data, false); |
1376 | return ret < 0 ? -1 : 0; | |
f1c67db7 RR |
1377 | } |
1378 | ||
1379 | static int process_build_id(struct perf_file_section *section, | |
3d7eb86b | 1380 | struct perf_header *ph, int fd, |
1d037ca1 | 1381 | void *data __maybe_unused) |
f1c67db7 RR |
1382 | { |
1383 | if (perf_header__read_build_ids(ph, fd, section->offset, section->size)) | |
1384 | pr_debug("Failed to read buildids, continuing...\n"); | |
1385 | return 0; | |
1386 | } | |
1387 | ||
a1ae5655 | 1388 | static int process_hostname(struct perf_file_section *section __maybe_unused, |
3d7eb86b NK |
1389 | struct perf_header *ph, int fd, |
1390 | void *data __maybe_unused) | |
a1ae5655 NK |
1391 | { |
1392 | ph->env.hostname = do_read_string(fd, ph); | |
1393 | return ph->env.hostname ? 0 : -ENOMEM; | |
1394 | } | |
1395 | ||
1396 | static int process_osrelease(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1397 | struct perf_header *ph, int fd, |
1398 | void *data __maybe_unused) | |
a1ae5655 NK |
1399 | { |
1400 | ph->env.os_release = do_read_string(fd, ph); | |
1401 | return ph->env.os_release ? 0 : -ENOMEM; | |
1402 | } | |
1403 | ||
1404 | static int process_version(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1405 | struct perf_header *ph, int fd, |
1406 | void *data __maybe_unused) | |
a1ae5655 NK |
1407 | { |
1408 | ph->env.version = do_read_string(fd, ph); | |
1409 | return ph->env.version ? 0 : -ENOMEM; | |
1410 | } | |
1411 | ||
1412 | static int process_arch(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1413 | struct perf_header *ph, int fd, |
1414 | void *data __maybe_unused) | |
a1ae5655 NK |
1415 | { |
1416 | ph->env.arch = do_read_string(fd, ph); | |
1417 | return ph->env.arch ? 0 : -ENOMEM; | |
1418 | } | |
1419 | ||
1420 | static int process_nrcpus(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1421 | struct perf_header *ph, int fd, |
1422 | void *data __maybe_unused) | |
a1ae5655 | 1423 | { |
727ebd54 | 1424 | ssize_t ret; |
a1ae5655 NK |
1425 | u32 nr; |
1426 | ||
5323f60c | 1427 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1428 | if (ret != sizeof(nr)) |
1429 | return -1; | |
1430 | ||
1431 | if (ph->needs_swap) | |
1432 | nr = bswap_32(nr); | |
1433 | ||
caa47047 | 1434 | ph->env.nr_cpus_avail = nr; |
a1ae5655 | 1435 | |
5323f60c | 1436 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1437 | if (ret != sizeof(nr)) |
1438 | return -1; | |
1439 | ||
1440 | if (ph->needs_swap) | |
1441 | nr = bswap_32(nr); | |
1442 | ||
caa47047 | 1443 | ph->env.nr_cpus_online = nr; |
a1ae5655 NK |
1444 | return 0; |
1445 | } | |
1446 | ||
1447 | static int process_cpudesc(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1448 | struct perf_header *ph, int fd, |
1449 | void *data __maybe_unused) | |
a1ae5655 NK |
1450 | { |
1451 | ph->env.cpu_desc = do_read_string(fd, ph); | |
1452 | return ph->env.cpu_desc ? 0 : -ENOMEM; | |
1453 | } | |
1454 | ||
1455 | static int process_cpuid(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1456 | struct perf_header *ph, int fd, |
1457 | void *data __maybe_unused) | |
a1ae5655 NK |
1458 | { |
1459 | ph->env.cpuid = do_read_string(fd, ph); | |
1460 | return ph->env.cpuid ? 0 : -ENOMEM; | |
1461 | } | |
1462 | ||
1463 | static int process_total_mem(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1464 | struct perf_header *ph, int fd, |
1465 | void *data __maybe_unused) | |
a1ae5655 NK |
1466 | { |
1467 | uint64_t mem; | |
727ebd54 | 1468 | ssize_t ret; |
a1ae5655 | 1469 | |
5323f60c | 1470 | ret = readn(fd, &mem, sizeof(mem)); |
a1ae5655 NK |
1471 | if (ret != sizeof(mem)) |
1472 | return -1; | |
1473 | ||
1474 | if (ph->needs_swap) | |
1475 | mem = bswap_64(mem); | |
1476 | ||
1477 | ph->env.total_mem = mem; | |
1478 | return 0; | |
1479 | } | |
1480 | ||
7c2f7afd RR |
1481 | static struct perf_evsel * |
1482 | perf_evlist__find_by_index(struct perf_evlist *evlist, int idx) | |
1483 | { | |
1484 | struct perf_evsel *evsel; | |
1485 | ||
0050f7aa | 1486 | evlist__for_each(evlist, evsel) { |
7c2f7afd RR |
1487 | if (evsel->idx == idx) |
1488 | return evsel; | |
1489 | } | |
1490 | ||
1491 | return NULL; | |
1492 | } | |
1493 | ||
1494 | static void | |
3d7eb86b NK |
1495 | perf_evlist__set_event_name(struct perf_evlist *evlist, |
1496 | struct perf_evsel *event) | |
7c2f7afd RR |
1497 | { |
1498 | struct perf_evsel *evsel; | |
1499 | ||
1500 | if (!event->name) | |
1501 | return; | |
1502 | ||
1503 | evsel = perf_evlist__find_by_index(evlist, event->idx); | |
1504 | if (!evsel) | |
1505 | return; | |
1506 | ||
1507 | if (evsel->name) | |
1508 | return; | |
1509 | ||
1510 | evsel->name = strdup(event->name); | |
1511 | } | |
1512 | ||
1513 | static int | |
1d037ca1 | 1514 | process_event_desc(struct perf_file_section *section __maybe_unused, |
3d7eb86b | 1515 | struct perf_header *header, int fd, |
1d037ca1 | 1516 | void *data __maybe_unused) |
7c2f7afd | 1517 | { |
3d7eb86b | 1518 | struct perf_session *session; |
7c2f7afd RR |
1519 | struct perf_evsel *evsel, *events = read_event_desc(header, fd); |
1520 | ||
1521 | if (!events) | |
1522 | return 0; | |
1523 | ||
3d7eb86b | 1524 | session = container_of(header, struct perf_session, header); |
7c2f7afd RR |
1525 | for (evsel = events; evsel->attr.size; evsel++) |
1526 | perf_evlist__set_event_name(session->evlist, evsel); | |
1527 | ||
1528 | free_event_desc(events); | |
1529 | ||
1530 | return 0; | |
1531 | } | |
1532 | ||
768dd3f3 | 1533 | static int process_cmdline(struct perf_file_section *section, |
3d7eb86b NK |
1534 | struct perf_header *ph, int fd, |
1535 | void *data __maybe_unused) | |
a1ae5655 | 1536 | { |
727ebd54 | 1537 | ssize_t ret; |
768dd3f3 JO |
1538 | char *str, *cmdline = NULL, **argv = NULL; |
1539 | u32 nr, i, len = 0; | |
a1ae5655 | 1540 | |
5323f60c | 1541 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1542 | if (ret != sizeof(nr)) |
1543 | return -1; | |
1544 | ||
1545 | if (ph->needs_swap) | |
1546 | nr = bswap_32(nr); | |
1547 | ||
1548 | ph->env.nr_cmdline = nr; | |
768dd3f3 JO |
1549 | |
1550 | cmdline = zalloc(section->size + nr + 1); | |
1551 | if (!cmdline) | |
1552 | return -1; | |
1553 | ||
1554 | argv = zalloc(sizeof(char *) * (nr + 1)); | |
1555 | if (!argv) | |
1556 | goto error; | |
a1ae5655 NK |
1557 | |
1558 | for (i = 0; i < nr; i++) { | |
1559 | str = do_read_string(fd, ph); | |
1560 | if (!str) | |
1561 | goto error; | |
1562 | ||
768dd3f3 JO |
1563 | argv[i] = cmdline + len; |
1564 | memcpy(argv[i], str, strlen(str) + 1); | |
1565 | len += strlen(str) + 1; | |
a1ae5655 NK |
1566 | free(str); |
1567 | } | |
768dd3f3 JO |
1568 | ph->env.cmdline = cmdline; |
1569 | ph->env.cmdline_argv = (const char **) argv; | |
a1ae5655 NK |
1570 | return 0; |
1571 | ||
1572 | error: | |
768dd3f3 JO |
1573 | free(argv); |
1574 | free(cmdline); | |
a1ae5655 NK |
1575 | return -1; |
1576 | } | |
1577 | ||
2bb00d2f | 1578 | static int process_cpu_topology(struct perf_file_section *section, |
3d7eb86b NK |
1579 | struct perf_header *ph, int fd, |
1580 | void *data __maybe_unused) | |
a1ae5655 | 1581 | { |
727ebd54 | 1582 | ssize_t ret; |
a1ae5655 NK |
1583 | u32 nr, i; |
1584 | char *str; | |
1585 | struct strbuf sb; | |
2bb00d2f KL |
1586 | int cpu_nr = ph->env.nr_cpus_online; |
1587 | u64 size = 0; | |
1588 | ||
1589 | ph->env.cpu = calloc(cpu_nr, sizeof(*ph->env.cpu)); | |
1590 | if (!ph->env.cpu) | |
1591 | return -1; | |
a1ae5655 | 1592 | |
5323f60c | 1593 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 | 1594 | if (ret != sizeof(nr)) |
2bb00d2f | 1595 | goto free_cpu; |
a1ae5655 NK |
1596 | |
1597 | if (ph->needs_swap) | |
1598 | nr = bswap_32(nr); | |
1599 | ||
1600 | ph->env.nr_sibling_cores = nr; | |
2bb00d2f | 1601 | size += sizeof(u32); |
a1ae5655 NK |
1602 | strbuf_init(&sb, 128); |
1603 | ||
1604 | for (i = 0; i < nr; i++) { | |
1605 | str = do_read_string(fd, ph); | |
1606 | if (!str) | |
1607 | goto error; | |
1608 | ||
1609 | /* include a NULL character at the end */ | |
1610 | strbuf_add(&sb, str, strlen(str) + 1); | |
2bb00d2f | 1611 | size += string_size(str); |
a1ae5655 NK |
1612 | free(str); |
1613 | } | |
1614 | ph->env.sibling_cores = strbuf_detach(&sb, NULL); | |
1615 | ||
5323f60c | 1616 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1617 | if (ret != sizeof(nr)) |
1618 | return -1; | |
1619 | ||
1620 | if (ph->needs_swap) | |
1621 | nr = bswap_32(nr); | |
1622 | ||
1623 | ph->env.nr_sibling_threads = nr; | |
2bb00d2f | 1624 | size += sizeof(u32); |
a1ae5655 NK |
1625 | |
1626 | for (i = 0; i < nr; i++) { | |
1627 | str = do_read_string(fd, ph); | |
1628 | if (!str) | |
1629 | goto error; | |
1630 | ||
1631 | /* include a NULL character at the end */ | |
1632 | strbuf_add(&sb, str, strlen(str) + 1); | |
2bb00d2f | 1633 | size += string_size(str); |
a1ae5655 NK |
1634 | free(str); |
1635 | } | |
1636 | ph->env.sibling_threads = strbuf_detach(&sb, NULL); | |
2bb00d2f KL |
1637 | |
1638 | /* | |
1639 | * The header may be from old perf, | |
1640 | * which doesn't include core id and socket id information. | |
1641 | */ | |
1642 | if (section->size <= size) { | |
1643 | zfree(&ph->env.cpu); | |
1644 | return 0; | |
1645 | } | |
1646 | ||
1647 | for (i = 0; i < (u32)cpu_nr; i++) { | |
1648 | ret = readn(fd, &nr, sizeof(nr)); | |
1649 | if (ret != sizeof(nr)) | |
1650 | goto free_cpu; | |
1651 | ||
1652 | if (ph->needs_swap) | |
1653 | nr = bswap_32(nr); | |
1654 | ||
1655 | if (nr > (u32)cpu_nr) { | |
1656 | pr_debug("core_id number is too big." | |
1657 | "You may need to upgrade the perf tool.\n"); | |
1658 | goto free_cpu; | |
1659 | } | |
1660 | ph->env.cpu[i].core_id = nr; | |
1661 | ||
1662 | ret = readn(fd, &nr, sizeof(nr)); | |
1663 | if (ret != sizeof(nr)) | |
1664 | goto free_cpu; | |
1665 | ||
1666 | if (ph->needs_swap) | |
1667 | nr = bswap_32(nr); | |
1668 | ||
1669 | if (nr > (u32)cpu_nr) { | |
1670 | pr_debug("socket_id number is too big." | |
1671 | "You may need to upgrade the perf tool.\n"); | |
1672 | goto free_cpu; | |
1673 | } | |
1674 | ||
1675 | ph->env.cpu[i].socket_id = nr; | |
1676 | } | |
1677 | ||
a1ae5655 NK |
1678 | return 0; |
1679 | ||
1680 | error: | |
1681 | strbuf_release(&sb); | |
2bb00d2f KL |
1682 | free_cpu: |
1683 | zfree(&ph->env.cpu); | |
a1ae5655 NK |
1684 | return -1; |
1685 | } | |
1686 | ||
1687 | static int process_numa_topology(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1688 | struct perf_header *ph, int fd, |
1689 | void *data __maybe_unused) | |
a1ae5655 | 1690 | { |
727ebd54 | 1691 | ssize_t ret; |
a1ae5655 NK |
1692 | u32 nr, node, i; |
1693 | char *str; | |
1694 | uint64_t mem_total, mem_free; | |
1695 | struct strbuf sb; | |
1696 | ||
1697 | /* nr nodes */ | |
5323f60c | 1698 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1699 | if (ret != sizeof(nr)) |
1700 | goto error; | |
1701 | ||
1702 | if (ph->needs_swap) | |
1703 | nr = bswap_32(nr); | |
1704 | ||
1705 | ph->env.nr_numa_nodes = nr; | |
1706 | strbuf_init(&sb, 256); | |
1707 | ||
1708 | for (i = 0; i < nr; i++) { | |
1709 | /* node number */ | |
5323f60c | 1710 | ret = readn(fd, &node, sizeof(node)); |
a1ae5655 NK |
1711 | if (ret != sizeof(node)) |
1712 | goto error; | |
1713 | ||
5323f60c | 1714 | ret = readn(fd, &mem_total, sizeof(u64)); |
a1ae5655 NK |
1715 | if (ret != sizeof(u64)) |
1716 | goto error; | |
1717 | ||
5323f60c | 1718 | ret = readn(fd, &mem_free, sizeof(u64)); |
a1ae5655 NK |
1719 | if (ret != sizeof(u64)) |
1720 | goto error; | |
1721 | ||
1722 | if (ph->needs_swap) { | |
1723 | node = bswap_32(node); | |
1724 | mem_total = bswap_64(mem_total); | |
1725 | mem_free = bswap_64(mem_free); | |
1726 | } | |
1727 | ||
1728 | strbuf_addf(&sb, "%u:%"PRIu64":%"PRIu64":", | |
1729 | node, mem_total, mem_free); | |
1730 | ||
1731 | str = do_read_string(fd, ph); | |
1732 | if (!str) | |
1733 | goto error; | |
1734 | ||
1735 | /* include a NULL character at the end */ | |
1736 | strbuf_add(&sb, str, strlen(str) + 1); | |
1737 | free(str); | |
1738 | } | |
1739 | ph->env.numa_nodes = strbuf_detach(&sb, NULL); | |
1740 | return 0; | |
1741 | ||
1742 | error: | |
1743 | strbuf_release(&sb); | |
1744 | return -1; | |
1745 | } | |
1746 | ||
1747 | static int process_pmu_mappings(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1748 | struct perf_header *ph, int fd, |
1749 | void *data __maybe_unused) | |
a1ae5655 | 1750 | { |
727ebd54 | 1751 | ssize_t ret; |
a1ae5655 NK |
1752 | char *name; |
1753 | u32 pmu_num; | |
1754 | u32 type; | |
1755 | struct strbuf sb; | |
1756 | ||
5323f60c | 1757 | ret = readn(fd, &pmu_num, sizeof(pmu_num)); |
a1ae5655 NK |
1758 | if (ret != sizeof(pmu_num)) |
1759 | return -1; | |
1760 | ||
1761 | if (ph->needs_swap) | |
1762 | pmu_num = bswap_32(pmu_num); | |
1763 | ||
1764 | if (!pmu_num) { | |
1765 | pr_debug("pmu mappings not available\n"); | |
1766 | return 0; | |
1767 | } | |
1768 | ||
1769 | ph->env.nr_pmu_mappings = pmu_num; | |
1770 | strbuf_init(&sb, 128); | |
1771 | ||
1772 | while (pmu_num) { | |
5323f60c | 1773 | if (readn(fd, &type, sizeof(type)) != sizeof(type)) |
a1ae5655 NK |
1774 | goto error; |
1775 | if (ph->needs_swap) | |
1776 | type = bswap_32(type); | |
1777 | ||
1778 | name = do_read_string(fd, ph); | |
1779 | if (!name) | |
1780 | goto error; | |
1781 | ||
1782 | strbuf_addf(&sb, "%u:%s", type, name); | |
1783 | /* include a NULL character at the end */ | |
1784 | strbuf_add(&sb, "", 1); | |
1785 | ||
e0838e02 KL |
1786 | if (!strcmp(name, "msr")) |
1787 | ph->env.msr_pmu_type = type; | |
1788 | ||
a1ae5655 NK |
1789 | free(name); |
1790 | pmu_num--; | |
1791 | } | |
1792 | ph->env.pmu_mappings = strbuf_detach(&sb, NULL); | |
1793 | return 0; | |
1794 | ||
1795 | error: | |
1796 | strbuf_release(&sb); | |
1797 | return -1; | |
1798 | } | |
1799 | ||
a8bb559b NK |
1800 | static int process_group_desc(struct perf_file_section *section __maybe_unused, |
1801 | struct perf_header *ph, int fd, | |
1802 | void *data __maybe_unused) | |
1803 | { | |
1804 | size_t ret = -1; | |
1805 | u32 i, nr, nr_groups; | |
1806 | struct perf_session *session; | |
1807 | struct perf_evsel *evsel, *leader = NULL; | |
1808 | struct group_desc { | |
1809 | char *name; | |
1810 | u32 leader_idx; | |
1811 | u32 nr_members; | |
1812 | } *desc; | |
1813 | ||
1814 | if (readn(fd, &nr_groups, sizeof(nr_groups)) != sizeof(nr_groups)) | |
1815 | return -1; | |
1816 | ||
1817 | if (ph->needs_swap) | |
1818 | nr_groups = bswap_32(nr_groups); | |
1819 | ||
1820 | ph->env.nr_groups = nr_groups; | |
1821 | if (!nr_groups) { | |
1822 | pr_debug("group desc not available\n"); | |
1823 | return 0; | |
1824 | } | |
1825 | ||
1826 | desc = calloc(nr_groups, sizeof(*desc)); | |
1827 | if (!desc) | |
1828 | return -1; | |
1829 | ||
1830 | for (i = 0; i < nr_groups; i++) { | |
1831 | desc[i].name = do_read_string(fd, ph); | |
1832 | if (!desc[i].name) | |
1833 | goto out_free; | |
1834 | ||
1835 | if (readn(fd, &desc[i].leader_idx, sizeof(u32)) != sizeof(u32)) | |
1836 | goto out_free; | |
1837 | ||
1838 | if (readn(fd, &desc[i].nr_members, sizeof(u32)) != sizeof(u32)) | |
1839 | goto out_free; | |
1840 | ||
1841 | if (ph->needs_swap) { | |
1842 | desc[i].leader_idx = bswap_32(desc[i].leader_idx); | |
1843 | desc[i].nr_members = bswap_32(desc[i].nr_members); | |
1844 | } | |
1845 | } | |
1846 | ||
1847 | /* | |
1848 | * Rebuild group relationship based on the group_desc | |
1849 | */ | |
1850 | session = container_of(ph, struct perf_session, header); | |
1851 | session->evlist->nr_groups = nr_groups; | |
1852 | ||
1853 | i = nr = 0; | |
0050f7aa | 1854 | evlist__for_each(session->evlist, evsel) { |
a8bb559b NK |
1855 | if (evsel->idx == (int) desc[i].leader_idx) { |
1856 | evsel->leader = evsel; | |
1857 | /* {anon_group} is a dummy name */ | |
210e812f | 1858 | if (strcmp(desc[i].name, "{anon_group}")) { |
a8bb559b | 1859 | evsel->group_name = desc[i].name; |
210e812f NK |
1860 | desc[i].name = NULL; |
1861 | } | |
a8bb559b NK |
1862 | evsel->nr_members = desc[i].nr_members; |
1863 | ||
1864 | if (i >= nr_groups || nr > 0) { | |
1865 | pr_debug("invalid group desc\n"); | |
1866 | goto out_free; | |
1867 | } | |
1868 | ||
1869 | leader = evsel; | |
1870 | nr = evsel->nr_members - 1; | |
1871 | i++; | |
1872 | } else if (nr) { | |
1873 | /* This is a group member */ | |
1874 | evsel->leader = leader; | |
1875 | ||
1876 | nr--; | |
1877 | } | |
1878 | } | |
1879 | ||
1880 | if (i != nr_groups || nr != 0) { | |
1881 | pr_debug("invalid group desc\n"); | |
1882 | goto out_free; | |
1883 | } | |
1884 | ||
1885 | ret = 0; | |
1886 | out_free: | |
50a2740b | 1887 | for (i = 0; i < nr_groups; i++) |
74cf249d | 1888 | zfree(&desc[i].name); |
a8bb559b NK |
1889 | free(desc); |
1890 | ||
1891 | return ret; | |
1892 | } | |
1893 | ||
99fa2984 AH |
1894 | static int process_auxtrace(struct perf_file_section *section, |
1895 | struct perf_header *ph, int fd, | |
1896 | void *data __maybe_unused) | |
1897 | { | |
1898 | struct perf_session *session; | |
1899 | int err; | |
1900 | ||
1901 | session = container_of(ph, struct perf_session, header); | |
1902 | ||
1903 | err = auxtrace_index__process(fd, section->size, session, | |
1904 | ph->needs_swap); | |
1905 | if (err < 0) | |
1906 | pr_err("Failed to process auxtrace index\n"); | |
1907 | return err; | |
1908 | } | |
1909 | ||
fbe96f29 SE |
1910 | struct feature_ops { |
1911 | int (*write)(int fd, struct perf_header *h, struct perf_evlist *evlist); | |
1912 | void (*print)(struct perf_header *h, int fd, FILE *fp); | |
f1c67db7 | 1913 | int (*process)(struct perf_file_section *section, |
3d7eb86b | 1914 | struct perf_header *h, int fd, void *data); |
fbe96f29 SE |
1915 | const char *name; |
1916 | bool full_only; | |
1917 | }; | |
1918 | ||
8cdfa78a RR |
1919 | #define FEAT_OPA(n, func) \ |
1920 | [n] = { .name = #n, .write = write_##func, .print = print_##func } | |
f1c67db7 RR |
1921 | #define FEAT_OPP(n, func) \ |
1922 | [n] = { .name = #n, .write = write_##func, .print = print_##func, \ | |
1923 | .process = process_##func } | |
8cdfa78a | 1924 | #define FEAT_OPF(n, func) \ |
f1c67db7 | 1925 | [n] = { .name = #n, .write = write_##func, .print = print_##func, \ |
a1ae5655 | 1926 | .process = process_##func, .full_only = true } |
8cdfa78a RR |
1927 | |
1928 | /* feature_ops not implemented: */ | |
2eeaaa09 SE |
1929 | #define print_tracing_data NULL |
1930 | #define print_build_id NULL | |
fbe96f29 SE |
1931 | |
1932 | static const struct feature_ops feat_ops[HEADER_LAST_FEATURE] = { | |
2eeaaa09 | 1933 | FEAT_OPP(HEADER_TRACING_DATA, tracing_data), |
f1c67db7 | 1934 | FEAT_OPP(HEADER_BUILD_ID, build_id), |
a1ae5655 NK |
1935 | FEAT_OPP(HEADER_HOSTNAME, hostname), |
1936 | FEAT_OPP(HEADER_OSRELEASE, osrelease), | |
1937 | FEAT_OPP(HEADER_VERSION, version), | |
1938 | FEAT_OPP(HEADER_ARCH, arch), | |
1939 | FEAT_OPP(HEADER_NRCPUS, nrcpus), | |
1940 | FEAT_OPP(HEADER_CPUDESC, cpudesc), | |
37e9d750 | 1941 | FEAT_OPP(HEADER_CPUID, cpuid), |
a1ae5655 | 1942 | FEAT_OPP(HEADER_TOTAL_MEM, total_mem), |
7c2f7afd | 1943 | FEAT_OPP(HEADER_EVENT_DESC, event_desc), |
a1ae5655 | 1944 | FEAT_OPP(HEADER_CMDLINE, cmdline), |
8cdfa78a RR |
1945 | FEAT_OPF(HEADER_CPU_TOPOLOGY, cpu_topology), |
1946 | FEAT_OPF(HEADER_NUMA_TOPOLOGY, numa_topology), | |
330aa675 | 1947 | FEAT_OPA(HEADER_BRANCH_STACK, branch_stack), |
a1ae5655 | 1948 | FEAT_OPP(HEADER_PMU_MAPPINGS, pmu_mappings), |
a8bb559b | 1949 | FEAT_OPP(HEADER_GROUP_DESC, group_desc), |
99fa2984 | 1950 | FEAT_OPP(HEADER_AUXTRACE, auxtrace), |
fbe96f29 SE |
1951 | }; |
1952 | ||
1953 | struct header_print_data { | |
1954 | FILE *fp; | |
1955 | bool full; /* extended list of headers */ | |
1956 | }; | |
1957 | ||
1958 | static int perf_file_section__fprintf_info(struct perf_file_section *section, | |
1959 | struct perf_header *ph, | |
1960 | int feat, int fd, void *data) | |
1961 | { | |
1962 | struct header_print_data *hd = data; | |
1963 | ||
1964 | if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) { | |
1965 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " | |
1966 | "%d, continuing...\n", section->offset, feat); | |
1967 | return 0; | |
1968 | } | |
b1e5a9be | 1969 | if (feat >= HEADER_LAST_FEATURE) { |
fbe96f29 | 1970 | pr_warning("unknown feature %d\n", feat); |
f7a8a133 | 1971 | return 0; |
fbe96f29 SE |
1972 | } |
1973 | if (!feat_ops[feat].print) | |
1974 | return 0; | |
1975 | ||
1976 | if (!feat_ops[feat].full_only || hd->full) | |
1977 | feat_ops[feat].print(ph, fd, hd->fp); | |
1978 | else | |
1979 | fprintf(hd->fp, "# %s info available, use -I to display\n", | |
1980 | feat_ops[feat].name); | |
1981 | ||
1982 | return 0; | |
1983 | } | |
1984 | ||
1985 | int perf_header__fprintf_info(struct perf_session *session, FILE *fp, bool full) | |
1986 | { | |
1987 | struct header_print_data hd; | |
1988 | struct perf_header *header = &session->header; | |
cc9784bd | 1989 | int fd = perf_data_file__fd(session->file); |
fbe96f29 SE |
1990 | hd.fp = fp; |
1991 | hd.full = full; | |
1992 | ||
1993 | perf_header__process_sections(header, fd, &hd, | |
1994 | perf_file_section__fprintf_info); | |
1995 | return 0; | |
1996 | } | |
1997 | ||
fbe96f29 SE |
1998 | static int do_write_feat(int fd, struct perf_header *h, int type, |
1999 | struct perf_file_section **p, | |
2000 | struct perf_evlist *evlist) | |
2001 | { | |
2002 | int err; | |
2003 | int ret = 0; | |
2004 | ||
2005 | if (perf_header__has_feat(h, type)) { | |
b1e5a9be RR |
2006 | if (!feat_ops[type].write) |
2007 | return -1; | |
fbe96f29 SE |
2008 | |
2009 | (*p)->offset = lseek(fd, 0, SEEK_CUR); | |
2010 | ||
2011 | err = feat_ops[type].write(fd, h, evlist); | |
2012 | if (err < 0) { | |
2013 | pr_debug("failed to write feature %d\n", type); | |
2014 | ||
2015 | /* undo anything written */ | |
2016 | lseek(fd, (*p)->offset, SEEK_SET); | |
2017 | ||
2018 | return -1; | |
2019 | } | |
2020 | (*p)->size = lseek(fd, 0, SEEK_CUR) - (*p)->offset; | |
2021 | (*p)++; | |
2022 | } | |
2023 | return ret; | |
2024 | } | |
2025 | ||
1c0b04d1 | 2026 | static int perf_header__adds_write(struct perf_header *header, |
361c99a6 | 2027 | struct perf_evlist *evlist, int fd) |
2ba08250 | 2028 | { |
9e827dd0 | 2029 | int nr_sections; |
fbe96f29 | 2030 | struct perf_file_section *feat_sec, *p; |
9e827dd0 FW |
2031 | int sec_size; |
2032 | u64 sec_start; | |
b1e5a9be | 2033 | int feat; |
fbe96f29 | 2034 | int err; |
9e827dd0 | 2035 | |
1c0b04d1 | 2036 | nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS); |
9e827dd0 | 2037 | if (!nr_sections) |
d5eed904 | 2038 | return 0; |
9e827dd0 | 2039 | |
91b98804 | 2040 | feat_sec = p = calloc(nr_sections, sizeof(*feat_sec)); |
d5eed904 ACM |
2041 | if (feat_sec == NULL) |
2042 | return -ENOMEM; | |
9e827dd0 FW |
2043 | |
2044 | sec_size = sizeof(*feat_sec) * nr_sections; | |
2045 | ||
8d541e97 | 2046 | sec_start = header->feat_offset; |
f887f301 | 2047 | lseek(fd, sec_start + sec_size, SEEK_SET); |
2ba08250 | 2048 | |
b1e5a9be RR |
2049 | for_each_set_bit(feat, header->adds_features, HEADER_FEAT_BITS) { |
2050 | if (do_write_feat(fd, header, feat, &p, evlist)) | |
2051 | perf_header__clear_feat(header, feat); | |
2052 | } | |
9e827dd0 | 2053 | |
f887f301 | 2054 | lseek(fd, sec_start, SEEK_SET); |
fbe96f29 SE |
2055 | /* |
2056 | * may write more than needed due to dropped feature, but | |
2057 | * this is okay, reader will skip the mising entries | |
2058 | */ | |
d5eed904 ACM |
2059 | err = do_write(fd, feat_sec, sec_size); |
2060 | if (err < 0) | |
2061 | pr_debug("failed to write feature section\n"); | |
9e827dd0 | 2062 | free(feat_sec); |
d5eed904 | 2063 | return err; |
9e827dd0 | 2064 | } |
2ba08250 | 2065 | |
8dc58101 TZ |
2066 | int perf_header__write_pipe(int fd) |
2067 | { | |
2068 | struct perf_pipe_file_header f_header; | |
2069 | int err; | |
2070 | ||
2071 | f_header = (struct perf_pipe_file_header){ | |
2072 | .magic = PERF_MAGIC, | |
2073 | .size = sizeof(f_header), | |
2074 | }; | |
2075 | ||
2076 | err = do_write(fd, &f_header, sizeof(f_header)); | |
2077 | if (err < 0) { | |
2078 | pr_debug("failed to write perf pipe header\n"); | |
2079 | return err; | |
2080 | } | |
2081 | ||
2082 | return 0; | |
2083 | } | |
2084 | ||
a91e5431 ACM |
2085 | int perf_session__write_header(struct perf_session *session, |
2086 | struct perf_evlist *evlist, | |
2087 | int fd, bool at_exit) | |
7c6a1c65 PZ |
2088 | { |
2089 | struct perf_file_header f_header; | |
2090 | struct perf_file_attr f_attr; | |
1c0b04d1 | 2091 | struct perf_header *header = &session->header; |
563aecb2 | 2092 | struct perf_evsel *evsel; |
944d62ba | 2093 | u64 attr_offset; |
a91e5431 | 2094 | int err; |
7c6a1c65 PZ |
2095 | |
2096 | lseek(fd, sizeof(f_header), SEEK_SET); | |
2097 | ||
0050f7aa | 2098 | evlist__for_each(session->evlist, evsel) { |
6606f873 RR |
2099 | evsel->id_offset = lseek(fd, 0, SEEK_CUR); |
2100 | err = do_write(fd, evsel->id, evsel->ids * sizeof(u64)); | |
d5eed904 ACM |
2101 | if (err < 0) { |
2102 | pr_debug("failed to write perf header\n"); | |
2103 | return err; | |
2104 | } | |
7c6a1c65 PZ |
2105 | } |
2106 | ||
944d62ba | 2107 | attr_offset = lseek(fd, 0, SEEK_CUR); |
7c6a1c65 | 2108 | |
0050f7aa | 2109 | evlist__for_each(evlist, evsel) { |
7c6a1c65 | 2110 | f_attr = (struct perf_file_attr){ |
6606f873 | 2111 | .attr = evsel->attr, |
7c6a1c65 | 2112 | .ids = { |
6606f873 RR |
2113 | .offset = evsel->id_offset, |
2114 | .size = evsel->ids * sizeof(u64), | |
7c6a1c65 PZ |
2115 | } |
2116 | }; | |
d5eed904 ACM |
2117 | err = do_write(fd, &f_attr, sizeof(f_attr)); |
2118 | if (err < 0) { | |
2119 | pr_debug("failed to write perf header attribute\n"); | |
2120 | return err; | |
2121 | } | |
7c6a1c65 PZ |
2122 | } |
2123 | ||
d645c442 AH |
2124 | if (!header->data_offset) |
2125 | header->data_offset = lseek(fd, 0, SEEK_CUR); | |
8d541e97 | 2126 | header->feat_offset = header->data_offset + header->data_size; |
7c6a1c65 | 2127 | |
d5eed904 | 2128 | if (at_exit) { |
1c0b04d1 | 2129 | err = perf_header__adds_write(header, evlist, fd); |
d5eed904 ACM |
2130 | if (err < 0) |
2131 | return err; | |
2132 | } | |
9e827dd0 | 2133 | |
7c6a1c65 PZ |
2134 | f_header = (struct perf_file_header){ |
2135 | .magic = PERF_MAGIC, | |
2136 | .size = sizeof(f_header), | |
2137 | .attr_size = sizeof(f_attr), | |
2138 | .attrs = { | |
944d62ba | 2139 | .offset = attr_offset, |
a91e5431 | 2140 | .size = evlist->nr_entries * sizeof(f_attr), |
7c6a1c65 PZ |
2141 | }, |
2142 | .data = { | |
1c0b04d1 ACM |
2143 | .offset = header->data_offset, |
2144 | .size = header->data_size, | |
7c6a1c65 | 2145 | }, |
44b3c578 | 2146 | /* event_types is ignored, store zeros */ |
7c6a1c65 PZ |
2147 | }; |
2148 | ||
1c0b04d1 | 2149 | memcpy(&f_header.adds_features, &header->adds_features, sizeof(header->adds_features)); |
2ba08250 | 2150 | |
7c6a1c65 | 2151 | lseek(fd, 0, SEEK_SET); |
d5eed904 ACM |
2152 | err = do_write(fd, &f_header, sizeof(f_header)); |
2153 | if (err < 0) { | |
2154 | pr_debug("failed to write perf header\n"); | |
2155 | return err; | |
2156 | } | |
1c0b04d1 | 2157 | lseek(fd, header->data_offset + header->data_size, SEEK_SET); |
7c6a1c65 | 2158 | |
d5eed904 | 2159 | return 0; |
7c6a1c65 PZ |
2160 | } |
2161 | ||
1c0b04d1 | 2162 | static int perf_header__getbuffer64(struct perf_header *header, |
ba21594c ACM |
2163 | int fd, void *buf, size_t size) |
2164 | { | |
1e7972cc | 2165 | if (readn(fd, buf, size) <= 0) |
ba21594c ACM |
2166 | return -1; |
2167 | ||
1c0b04d1 | 2168 | if (header->needs_swap) |
ba21594c ACM |
2169 | mem_bswap_64(buf, size); |
2170 | ||
2171 | return 0; | |
2172 | } | |
2173 | ||
1c0b04d1 | 2174 | int perf_header__process_sections(struct perf_header *header, int fd, |
fbe96f29 | 2175 | void *data, |
1c0b04d1 | 2176 | int (*process)(struct perf_file_section *section, |
b1e5a9be RR |
2177 | struct perf_header *ph, |
2178 | int feat, int fd, void *data)) | |
2ba08250 | 2179 | { |
b1e5a9be | 2180 | struct perf_file_section *feat_sec, *sec; |
9e827dd0 FW |
2181 | int nr_sections; |
2182 | int sec_size; | |
b1e5a9be RR |
2183 | int feat; |
2184 | int err; | |
9e827dd0 | 2185 | |
1c0b04d1 | 2186 | nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS); |
9e827dd0 | 2187 | if (!nr_sections) |
37562eac | 2188 | return 0; |
9e827dd0 | 2189 | |
91b98804 | 2190 | feat_sec = sec = calloc(nr_sections, sizeof(*feat_sec)); |
9e827dd0 | 2191 | if (!feat_sec) |
37562eac | 2192 | return -1; |
9e827dd0 FW |
2193 | |
2194 | sec_size = sizeof(*feat_sec) * nr_sections; | |
2195 | ||
8d541e97 | 2196 | lseek(fd, header->feat_offset, SEEK_SET); |
9e827dd0 | 2197 | |
b1e5a9be RR |
2198 | err = perf_header__getbuffer64(header, fd, feat_sec, sec_size); |
2199 | if (err < 0) | |
769885f3 | 2200 | goto out_free; |
9e827dd0 | 2201 | |
b1e5a9be RR |
2202 | for_each_set_bit(feat, header->adds_features, HEADER_LAST_FEATURE) { |
2203 | err = process(sec++, header, feat, fd, data); | |
2204 | if (err < 0) | |
2205 | goto out_free; | |
2ba08250 | 2206 | } |
b1e5a9be | 2207 | err = 0; |
769885f3 | 2208 | out_free: |
37562eac ACM |
2209 | free(feat_sec); |
2210 | return err; | |
769885f3 | 2211 | } |
4778d2e4 | 2212 | |
114382a0 SE |
2213 | static const int attr_file_abi_sizes[] = { |
2214 | [0] = PERF_ATTR_SIZE_VER0, | |
2215 | [1] = PERF_ATTR_SIZE_VER1, | |
239cc478 | 2216 | [2] = PERF_ATTR_SIZE_VER2, |
0f6a3015 | 2217 | [3] = PERF_ATTR_SIZE_VER3, |
6a21c0b5 | 2218 | [4] = PERF_ATTR_SIZE_VER4, |
114382a0 SE |
2219 | 0, |
2220 | }; | |
2221 | ||
2222 | /* | |
2223 | * In the legacy file format, the magic number is not used to encode endianness. | |
2224 | * hdr_sz was used to encode endianness. But given that hdr_sz can vary based | |
2225 | * on ABI revisions, we need to try all combinations for all endianness to | |
2226 | * detect the endianness. | |
2227 | */ | |
2228 | static int try_all_file_abis(uint64_t hdr_sz, struct perf_header *ph) | |
73323f54 | 2229 | { |
114382a0 SE |
2230 | uint64_t ref_size, attr_size; |
2231 | int i; | |
73323f54 | 2232 | |
114382a0 SE |
2233 | for (i = 0 ; attr_file_abi_sizes[i]; i++) { |
2234 | ref_size = attr_file_abi_sizes[i] | |
2235 | + sizeof(struct perf_file_section); | |
2236 | if (hdr_sz != ref_size) { | |
2237 | attr_size = bswap_64(hdr_sz); | |
2238 | if (attr_size != ref_size) | |
2239 | continue; | |
73323f54 | 2240 | |
114382a0 SE |
2241 | ph->needs_swap = true; |
2242 | } | |
2243 | pr_debug("ABI%d perf.data file detected, need_swap=%d\n", | |
2244 | i, | |
2245 | ph->needs_swap); | |
2246 | return 0; | |
2247 | } | |
2248 | /* could not determine endianness */ | |
2249 | return -1; | |
2250 | } | |
73323f54 | 2251 | |
114382a0 SE |
2252 | #define PERF_PIPE_HDR_VER0 16 |
2253 | ||
2254 | static const size_t attr_pipe_abi_sizes[] = { | |
2255 | [0] = PERF_PIPE_HDR_VER0, | |
2256 | 0, | |
2257 | }; | |
2258 | ||
2259 | /* | |
2260 | * In the legacy pipe format, there is an implicit assumption that endiannesss | |
2261 | * between host recording the samples, and host parsing the samples is the | |
2262 | * same. This is not always the case given that the pipe output may always be | |
2263 | * redirected into a file and analyzed on a different machine with possibly a | |
2264 | * different endianness and perf_event ABI revsions in the perf tool itself. | |
2265 | */ | |
2266 | static int try_all_pipe_abis(uint64_t hdr_sz, struct perf_header *ph) | |
2267 | { | |
2268 | u64 attr_size; | |
2269 | int i; | |
2270 | ||
2271 | for (i = 0 ; attr_pipe_abi_sizes[i]; i++) { | |
2272 | if (hdr_sz != attr_pipe_abi_sizes[i]) { | |
2273 | attr_size = bswap_64(hdr_sz); | |
2274 | if (attr_size != hdr_sz) | |
2275 | continue; | |
73323f54 SE |
2276 | |
2277 | ph->needs_swap = true; | |
2278 | } | |
114382a0 | 2279 | pr_debug("Pipe ABI%d perf.data file detected\n", i); |
73323f54 SE |
2280 | return 0; |
2281 | } | |
114382a0 SE |
2282 | return -1; |
2283 | } | |
2284 | ||
e84ba4e2 FT |
2285 | bool is_perf_magic(u64 magic) |
2286 | { | |
2287 | if (!memcmp(&magic, __perf_magic1, sizeof(magic)) | |
2288 | || magic == __perf_magic2 | |
2289 | || magic == __perf_magic2_sw) | |
2290 | return true; | |
2291 | ||
2292 | return false; | |
2293 | } | |
2294 | ||
114382a0 SE |
2295 | static int check_magic_endian(u64 magic, uint64_t hdr_sz, |
2296 | bool is_pipe, struct perf_header *ph) | |
2297 | { | |
2298 | int ret; | |
2299 | ||
2300 | /* check for legacy format */ | |
2301 | ret = memcmp(&magic, __perf_magic1, sizeof(magic)); | |
2302 | if (ret == 0) { | |
2a08c3ec | 2303 | ph->version = PERF_HEADER_VERSION_1; |
114382a0 SE |
2304 | pr_debug("legacy perf.data format\n"); |
2305 | if (is_pipe) | |
2306 | return try_all_pipe_abis(hdr_sz, ph); | |
2307 | ||
2308 | return try_all_file_abis(hdr_sz, ph); | |
2309 | } | |
2310 | /* | |
2311 | * the new magic number serves two purposes: | |
2312 | * - unique number to identify actual perf.data files | |
2313 | * - encode endianness of file | |
2314 | */ | |
f7913971 | 2315 | ph->version = PERF_HEADER_VERSION_2; |
73323f54 | 2316 | |
114382a0 SE |
2317 | /* check magic number with one endianness */ |
2318 | if (magic == __perf_magic2) | |
73323f54 SE |
2319 | return 0; |
2320 | ||
114382a0 SE |
2321 | /* check magic number with opposite endianness */ |
2322 | if (magic != __perf_magic2_sw) | |
73323f54 SE |
2323 | return -1; |
2324 | ||
2325 | ph->needs_swap = true; | |
2326 | ||
2327 | return 0; | |
2328 | } | |
2329 | ||
1c0b04d1 | 2330 | int perf_file_header__read(struct perf_file_header *header, |
37562eac ACM |
2331 | struct perf_header *ph, int fd) |
2332 | { | |
727ebd54 | 2333 | ssize_t ret; |
73323f54 | 2334 | |
37562eac | 2335 | lseek(fd, 0, SEEK_SET); |
37562eac | 2336 | |
73323f54 SE |
2337 | ret = readn(fd, header, sizeof(*header)); |
2338 | if (ret <= 0) | |
37562eac ACM |
2339 | return -1; |
2340 | ||
114382a0 SE |
2341 | if (check_magic_endian(header->magic, |
2342 | header->attr_size, false, ph) < 0) { | |
2343 | pr_debug("magic/endian check failed\n"); | |
73323f54 | 2344 | return -1; |
114382a0 | 2345 | } |
ba21594c | 2346 | |
73323f54 | 2347 | if (ph->needs_swap) { |
1c0b04d1 | 2348 | mem_bswap_64(header, offsetof(struct perf_file_header, |
73323f54 | 2349 | adds_features)); |
ba21594c ACM |
2350 | } |
2351 | ||
1c0b04d1 | 2352 | if (header->size != sizeof(*header)) { |
37562eac | 2353 | /* Support the previous format */ |
1c0b04d1 ACM |
2354 | if (header->size == offsetof(typeof(*header), adds_features)) |
2355 | bitmap_zero(header->adds_features, HEADER_FEAT_BITS); | |
37562eac ACM |
2356 | else |
2357 | return -1; | |
d327fa43 | 2358 | } else if (ph->needs_swap) { |
d327fa43 DA |
2359 | /* |
2360 | * feature bitmap is declared as an array of unsigned longs -- | |
2361 | * not good since its size can differ between the host that | |
2362 | * generated the data file and the host analyzing the file. | |
2363 | * | |
2364 | * We need to handle endianness, but we don't know the size of | |
2365 | * the unsigned long where the file was generated. Take a best | |
2366 | * guess at determining it: try 64-bit swap first (ie., file | |
2367 | * created on a 64-bit host), and check if the hostname feature | |
2368 | * bit is set (this feature bit is forced on as of fbe96f2). | |
2369 | * If the bit is not, undo the 64-bit swap and try a 32-bit | |
2370 | * swap. If the hostname bit is still not set (e.g., older data | |
2371 | * file), punt and fallback to the original behavior -- | |
2372 | * clearing all feature bits and setting buildid. | |
2373 | */ | |
80c0120a DA |
2374 | mem_bswap_64(&header->adds_features, |
2375 | BITS_TO_U64(HEADER_FEAT_BITS)); | |
d327fa43 DA |
2376 | |
2377 | if (!test_bit(HEADER_HOSTNAME, header->adds_features)) { | |
80c0120a DA |
2378 | /* unswap as u64 */ |
2379 | mem_bswap_64(&header->adds_features, | |
2380 | BITS_TO_U64(HEADER_FEAT_BITS)); | |
2381 | ||
2382 | /* unswap as u32 */ | |
2383 | mem_bswap_32(&header->adds_features, | |
2384 | BITS_TO_U32(HEADER_FEAT_BITS)); | |
d327fa43 DA |
2385 | } |
2386 | ||
2387 | if (!test_bit(HEADER_HOSTNAME, header->adds_features)) { | |
2388 | bitmap_zero(header->adds_features, HEADER_FEAT_BITS); | |
2389 | set_bit(HEADER_BUILD_ID, header->adds_features); | |
2390 | } | |
4778d2e4 | 2391 | } |
9e827dd0 | 2392 | |
1c0b04d1 | 2393 | memcpy(&ph->adds_features, &header->adds_features, |
ba21594c | 2394 | sizeof(ph->adds_features)); |
37562eac | 2395 | |
1c0b04d1 ACM |
2396 | ph->data_offset = header->data.offset; |
2397 | ph->data_size = header->data.size; | |
8d541e97 | 2398 | ph->feat_offset = header->data.offset + header->data.size; |
37562eac ACM |
2399 | return 0; |
2400 | } | |
2401 | ||
1c0b04d1 | 2402 | static int perf_file_section__process(struct perf_file_section *section, |
ba21594c | 2403 | struct perf_header *ph, |
da378962 | 2404 | int feat, int fd, void *data) |
37562eac | 2405 | { |
1c0b04d1 | 2406 | if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) { |
9486aa38 | 2407 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " |
1c0b04d1 | 2408 | "%d, continuing...\n", section->offset, feat); |
37562eac ACM |
2409 | return 0; |
2410 | } | |
2411 | ||
b1e5a9be RR |
2412 | if (feat >= HEADER_LAST_FEATURE) { |
2413 | pr_debug("unknown feature %d, continuing...\n", feat); | |
2414 | return 0; | |
2415 | } | |
2416 | ||
f1c67db7 RR |
2417 | if (!feat_ops[feat].process) |
2418 | return 0; | |
37562eac | 2419 | |
3d7eb86b | 2420 | return feat_ops[feat].process(section, ph, fd, data); |
37562eac | 2421 | } |
2ba08250 | 2422 | |
1c0b04d1 | 2423 | static int perf_file_header__read_pipe(struct perf_pipe_file_header *header, |
454c407e TZ |
2424 | struct perf_header *ph, int fd, |
2425 | bool repipe) | |
7c6a1c65 | 2426 | { |
727ebd54 | 2427 | ssize_t ret; |
73323f54 SE |
2428 | |
2429 | ret = readn(fd, header, sizeof(*header)); | |
2430 | if (ret <= 0) | |
2431 | return -1; | |
2432 | ||
114382a0 SE |
2433 | if (check_magic_endian(header->magic, header->size, true, ph) < 0) { |
2434 | pr_debug("endian/magic failed\n"); | |
8dc58101 | 2435 | return -1; |
114382a0 SE |
2436 | } |
2437 | ||
2438 | if (ph->needs_swap) | |
2439 | header->size = bswap_64(header->size); | |
8dc58101 | 2440 | |
1c0b04d1 | 2441 | if (repipe && do_write(STDOUT_FILENO, header, sizeof(*header)) < 0) |
454c407e TZ |
2442 | return -1; |
2443 | ||
8dc58101 TZ |
2444 | return 0; |
2445 | } | |
2446 | ||
d4339569 | 2447 | static int perf_header__read_pipe(struct perf_session *session) |
8dc58101 | 2448 | { |
1c0b04d1 | 2449 | struct perf_header *header = &session->header; |
8dc58101 TZ |
2450 | struct perf_pipe_file_header f_header; |
2451 | ||
cc9784bd JO |
2452 | if (perf_file_header__read_pipe(&f_header, header, |
2453 | perf_data_file__fd(session->file), | |
454c407e | 2454 | session->repipe) < 0) { |
8dc58101 TZ |
2455 | pr_debug("incompatible file format\n"); |
2456 | return -EINVAL; | |
2457 | } | |
2458 | ||
8dc58101 TZ |
2459 | return 0; |
2460 | } | |
2461 | ||
69996df4 SE |
2462 | static int read_attr(int fd, struct perf_header *ph, |
2463 | struct perf_file_attr *f_attr) | |
2464 | { | |
2465 | struct perf_event_attr *attr = &f_attr->attr; | |
2466 | size_t sz, left; | |
2467 | size_t our_sz = sizeof(f_attr->attr); | |
727ebd54 | 2468 | ssize_t ret; |
69996df4 SE |
2469 | |
2470 | memset(f_attr, 0, sizeof(*f_attr)); | |
2471 | ||
2472 | /* read minimal guaranteed structure */ | |
2473 | ret = readn(fd, attr, PERF_ATTR_SIZE_VER0); | |
2474 | if (ret <= 0) { | |
2475 | pr_debug("cannot read %d bytes of header attr\n", | |
2476 | PERF_ATTR_SIZE_VER0); | |
2477 | return -1; | |
2478 | } | |
2479 | ||
2480 | /* on file perf_event_attr size */ | |
2481 | sz = attr->size; | |
114382a0 | 2482 | |
69996df4 SE |
2483 | if (ph->needs_swap) |
2484 | sz = bswap_32(sz); | |
2485 | ||
2486 | if (sz == 0) { | |
2487 | /* assume ABI0 */ | |
2488 | sz = PERF_ATTR_SIZE_VER0; | |
2489 | } else if (sz > our_sz) { | |
2490 | pr_debug("file uses a more recent and unsupported ABI" | |
2491 | " (%zu bytes extra)\n", sz - our_sz); | |
2492 | return -1; | |
2493 | } | |
2494 | /* what we have not yet read and that we know about */ | |
2495 | left = sz - PERF_ATTR_SIZE_VER0; | |
2496 | if (left) { | |
2497 | void *ptr = attr; | |
2498 | ptr += PERF_ATTR_SIZE_VER0; | |
2499 | ||
2500 | ret = readn(fd, ptr, left); | |
2501 | } | |
2502 | /* read perf_file_section, ids are read in caller */ | |
2503 | ret = readn(fd, &f_attr->ids, sizeof(f_attr->ids)); | |
2504 | ||
2505 | return ret <= 0 ? -1 : 0; | |
2506 | } | |
2507 | ||
831394bd NK |
2508 | static int perf_evsel__prepare_tracepoint_event(struct perf_evsel *evsel, |
2509 | struct pevent *pevent) | |
cb9dd49e | 2510 | { |
831394bd | 2511 | struct event_format *event; |
cb9dd49e ACM |
2512 | char bf[128]; |
2513 | ||
831394bd NK |
2514 | /* already prepared */ |
2515 | if (evsel->tp_format) | |
2516 | return 0; | |
2517 | ||
3dce2ce3 NK |
2518 | if (pevent == NULL) { |
2519 | pr_debug("broken or missing trace data\n"); | |
2520 | return -1; | |
2521 | } | |
2522 | ||
831394bd | 2523 | event = pevent_find_event(pevent, evsel->attr.config); |
cb9dd49e ACM |
2524 | if (event == NULL) |
2525 | return -1; | |
2526 | ||
831394bd NK |
2527 | if (!evsel->name) { |
2528 | snprintf(bf, sizeof(bf), "%s:%s", event->system, event->name); | |
2529 | evsel->name = strdup(bf); | |
2530 | if (evsel->name == NULL) | |
2531 | return -1; | |
2532 | } | |
cb9dd49e | 2533 | |
fcf65bf1 | 2534 | evsel->tp_format = event; |
cb9dd49e ACM |
2535 | return 0; |
2536 | } | |
2537 | ||
831394bd NK |
2538 | static int perf_evlist__prepare_tracepoint_events(struct perf_evlist *evlist, |
2539 | struct pevent *pevent) | |
cb9dd49e ACM |
2540 | { |
2541 | struct perf_evsel *pos; | |
2542 | ||
0050f7aa | 2543 | evlist__for_each(evlist, pos) { |
831394bd NK |
2544 | if (pos->attr.type == PERF_TYPE_TRACEPOINT && |
2545 | perf_evsel__prepare_tracepoint_event(pos, pevent)) | |
cb9dd49e ACM |
2546 | return -1; |
2547 | } | |
2548 | ||
2549 | return 0; | |
2550 | } | |
2551 | ||
d4339569 | 2552 | int perf_session__read_header(struct perf_session *session) |
8dc58101 | 2553 | { |
cc9784bd | 2554 | struct perf_data_file *file = session->file; |
1c0b04d1 | 2555 | struct perf_header *header = &session->header; |
ba21594c | 2556 | struct perf_file_header f_header; |
7c6a1c65 PZ |
2557 | struct perf_file_attr f_attr; |
2558 | u64 f_id; | |
7c6a1c65 | 2559 | int nr_attrs, nr_ids, i, j; |
cc9784bd | 2560 | int fd = perf_data_file__fd(file); |
7c6a1c65 | 2561 | |
334fe7a3 | 2562 | session->evlist = perf_evlist__new(); |
a91e5431 ACM |
2563 | if (session->evlist == NULL) |
2564 | return -ENOMEM; | |
2565 | ||
2c07144d | 2566 | session->evlist->env = &header->env; |
4cde998d | 2567 | session->machines.host.env = &header->env; |
cc9784bd | 2568 | if (perf_data_file__is_pipe(file)) |
d4339569 | 2569 | return perf_header__read_pipe(session); |
8dc58101 | 2570 | |
69996df4 | 2571 | if (perf_file_header__read(&f_header, header, fd) < 0) |
4dc0a04b | 2572 | return -EINVAL; |
7c6a1c65 | 2573 | |
b314e5cf NK |
2574 | /* |
2575 | * Sanity check that perf.data was written cleanly; data size is | |
2576 | * initialized to 0 and updated only if the on_exit function is run. | |
2577 | * If data size is still 0 then the file contains only partial | |
2578 | * information. Just warn user and process it as much as it can. | |
2579 | */ | |
2580 | if (f_header.data.size == 0) { | |
2581 | pr_warning("WARNING: The %s file's data size field is 0 which is unexpected.\n" | |
2582 | "Was the 'perf record' command properly terminated?\n", | |
cc9784bd | 2583 | file->path); |
b314e5cf NK |
2584 | } |
2585 | ||
69996df4 | 2586 | nr_attrs = f_header.attrs.size / f_header.attr_size; |
7c6a1c65 PZ |
2587 | lseek(fd, f_header.attrs.offset, SEEK_SET); |
2588 | ||
2589 | for (i = 0; i < nr_attrs; i++) { | |
a91e5431 | 2590 | struct perf_evsel *evsel; |
1c222bce | 2591 | off_t tmp; |
7c6a1c65 | 2592 | |
69996df4 | 2593 | if (read_attr(fd, header, &f_attr) < 0) |
769885f3 | 2594 | goto out_errno; |
ba21594c | 2595 | |
1060ab85 DA |
2596 | if (header->needs_swap) { |
2597 | f_attr.ids.size = bswap_64(f_attr.ids.size); | |
2598 | f_attr.ids.offset = bswap_64(f_attr.ids.offset); | |
eda3913b | 2599 | perf_event__attr_swap(&f_attr.attr); |
1060ab85 | 2600 | } |
eda3913b | 2601 | |
1c222bce | 2602 | tmp = lseek(fd, 0, SEEK_CUR); |
ef503831 | 2603 | evsel = perf_evsel__new(&f_attr.attr); |
7c6a1c65 | 2604 | |
a91e5431 ACM |
2605 | if (evsel == NULL) |
2606 | goto out_delete_evlist; | |
0807d2d8 ACM |
2607 | |
2608 | evsel->needs_swap = header->needs_swap; | |
a91e5431 ACM |
2609 | /* |
2610 | * Do it before so that if perf_evsel__alloc_id fails, this | |
2611 | * entry gets purged too at perf_evlist__delete(). | |
2612 | */ | |
2613 | perf_evlist__add(session->evlist, evsel); | |
7c6a1c65 PZ |
2614 | |
2615 | nr_ids = f_attr.ids.size / sizeof(u64); | |
a91e5431 ACM |
2616 | /* |
2617 | * We don't have the cpu and thread maps on the header, so | |
2618 | * for allocating the perf_sample_id table we fake 1 cpu and | |
2619 | * hattr->ids threads. | |
2620 | */ | |
2621 | if (perf_evsel__alloc_id(evsel, 1, nr_ids)) | |
2622 | goto out_delete_evlist; | |
2623 | ||
7c6a1c65 PZ |
2624 | lseek(fd, f_attr.ids.offset, SEEK_SET); |
2625 | ||
2626 | for (j = 0; j < nr_ids; j++) { | |
1c0b04d1 | 2627 | if (perf_header__getbuffer64(header, fd, &f_id, sizeof(f_id))) |
769885f3 | 2628 | goto out_errno; |
7c6a1c65 | 2629 | |
a91e5431 | 2630 | perf_evlist__id_add(session->evlist, evsel, 0, j, f_id); |
7c6a1c65 | 2631 | } |
11deb1f9 | 2632 | |
7c6a1c65 PZ |
2633 | lseek(fd, tmp, SEEK_SET); |
2634 | } | |
2635 | ||
d04b35f8 ACM |
2636 | symbol_conf.nr_events = nr_attrs; |
2637 | ||
29f5ffd3 | 2638 | perf_header__process_sections(header, fd, &session->tevent, |
fbe96f29 | 2639 | perf_file_section__process); |
4778d2e4 | 2640 | |
831394bd | 2641 | if (perf_evlist__prepare_tracepoint_events(session->evlist, |
29f5ffd3 | 2642 | session->tevent.pevent)) |
cb9dd49e ACM |
2643 | goto out_delete_evlist; |
2644 | ||
4dc0a04b | 2645 | return 0; |
769885f3 ACM |
2646 | out_errno: |
2647 | return -errno; | |
a91e5431 ACM |
2648 | |
2649 | out_delete_evlist: | |
2650 | perf_evlist__delete(session->evlist); | |
2651 | session->evlist = NULL; | |
2652 | return -ENOMEM; | |
7c6a1c65 | 2653 | } |
0d3a5c88 | 2654 | |
45694aa7 | 2655 | int perf_event__synthesize_attr(struct perf_tool *tool, |
f4d83436 | 2656 | struct perf_event_attr *attr, u32 ids, u64 *id, |
743eb868 | 2657 | perf_event__handler_t process) |
2c46dbb5 | 2658 | { |
8115d60c | 2659 | union perf_event *ev; |
2c46dbb5 TZ |
2660 | size_t size; |
2661 | int err; | |
2662 | ||
2663 | size = sizeof(struct perf_event_attr); | |
9ac3e487 | 2664 | size = PERF_ALIGN(size, sizeof(u64)); |
2c46dbb5 TZ |
2665 | size += sizeof(struct perf_event_header); |
2666 | size += ids * sizeof(u64); | |
2667 | ||
2668 | ev = malloc(size); | |
2669 | ||
ce47dc56 CS |
2670 | if (ev == NULL) |
2671 | return -ENOMEM; | |
2672 | ||
2c46dbb5 TZ |
2673 | ev->attr.attr = *attr; |
2674 | memcpy(ev->attr.id, id, ids * sizeof(u64)); | |
2675 | ||
2676 | ev->attr.header.type = PERF_RECORD_HEADER_ATTR; | |
f4d83436 | 2677 | ev->attr.header.size = (u16)size; |
2c46dbb5 | 2678 | |
f4d83436 RR |
2679 | if (ev->attr.header.size == size) |
2680 | err = process(tool, ev, NULL, NULL); | |
2681 | else | |
2682 | err = -E2BIG; | |
2c46dbb5 TZ |
2683 | |
2684 | free(ev); | |
2685 | ||
2686 | return err; | |
2687 | } | |
2688 | ||
45694aa7 | 2689 | int perf_event__synthesize_attrs(struct perf_tool *tool, |
d20deb64 | 2690 | struct perf_session *session, |
a91e5431 | 2691 | perf_event__handler_t process) |
2c46dbb5 | 2692 | { |
6606f873 | 2693 | struct perf_evsel *evsel; |
a91e5431 | 2694 | int err = 0; |
2c46dbb5 | 2695 | |
0050f7aa | 2696 | evlist__for_each(session->evlist, evsel) { |
6606f873 RR |
2697 | err = perf_event__synthesize_attr(tool, &evsel->attr, evsel->ids, |
2698 | evsel->id, process); | |
2c46dbb5 TZ |
2699 | if (err) { |
2700 | pr_debug("failed to create perf header attribute\n"); | |
2701 | return err; | |
2702 | } | |
2703 | } | |
2704 | ||
2705 | return err; | |
2706 | } | |
2707 | ||
47c3d109 AH |
2708 | int perf_event__process_attr(struct perf_tool *tool __maybe_unused, |
2709 | union perf_event *event, | |
10d0f086 | 2710 | struct perf_evlist **pevlist) |
2c46dbb5 | 2711 | { |
f4d83436 | 2712 | u32 i, ids, n_ids; |
a91e5431 | 2713 | struct perf_evsel *evsel; |
10d0f086 | 2714 | struct perf_evlist *evlist = *pevlist; |
2c46dbb5 | 2715 | |
10d0f086 | 2716 | if (evlist == NULL) { |
334fe7a3 | 2717 | *pevlist = evlist = perf_evlist__new(); |
10d0f086 | 2718 | if (evlist == NULL) |
a91e5431 ACM |
2719 | return -ENOMEM; |
2720 | } | |
2721 | ||
ef503831 | 2722 | evsel = perf_evsel__new(&event->attr.attr); |
a91e5431 | 2723 | if (evsel == NULL) |
2c46dbb5 TZ |
2724 | return -ENOMEM; |
2725 | ||
10d0f086 | 2726 | perf_evlist__add(evlist, evsel); |
a91e5431 | 2727 | |
8115d60c ACM |
2728 | ids = event->header.size; |
2729 | ids -= (void *)&event->attr.id - (void *)event; | |
2c46dbb5 | 2730 | n_ids = ids / sizeof(u64); |
a91e5431 ACM |
2731 | /* |
2732 | * We don't have the cpu and thread maps on the header, so | |
2733 | * for allocating the perf_sample_id table we fake 1 cpu and | |
2734 | * hattr->ids threads. | |
2735 | */ | |
2736 | if (perf_evsel__alloc_id(evsel, 1, n_ids)) | |
2737 | return -ENOMEM; | |
2c46dbb5 TZ |
2738 | |
2739 | for (i = 0; i < n_ids; i++) { | |
10d0f086 | 2740 | perf_evlist__id_add(evlist, evsel, 0, i, event->attr.id[i]); |
2c46dbb5 TZ |
2741 | } |
2742 | ||
7e0d6fc9 AH |
2743 | symbol_conf.nr_events = evlist->nr_entries; |
2744 | ||
2c46dbb5 TZ |
2745 | return 0; |
2746 | } | |
cd19a035 | 2747 | |
45694aa7 | 2748 | int perf_event__synthesize_tracing_data(struct perf_tool *tool, int fd, |
d20deb64 | 2749 | struct perf_evlist *evlist, |
743eb868 | 2750 | perf_event__handler_t process) |
9215545e | 2751 | { |
8115d60c | 2752 | union perf_event ev; |
29208e57 | 2753 | struct tracing_data *tdata; |
9215545e | 2754 | ssize_t size = 0, aligned_size = 0, padding; |
1d037ca1 | 2755 | int err __maybe_unused = 0; |
9215545e | 2756 | |
29208e57 JO |
2757 | /* |
2758 | * We are going to store the size of the data followed | |
2759 | * by the data contents. Since the fd descriptor is a pipe, | |
2760 | * we cannot seek back to store the size of the data once | |
2761 | * we know it. Instead we: | |
2762 | * | |
2763 | * - write the tracing data to the temp file | |
2764 | * - get/write the data size to pipe | |
2765 | * - write the tracing data from the temp file | |
2766 | * to the pipe | |
2767 | */ | |
2768 | tdata = tracing_data_get(&evlist->entries, fd, true); | |
2769 | if (!tdata) | |
2770 | return -1; | |
2771 | ||
9215545e TZ |
2772 | memset(&ev, 0, sizeof(ev)); |
2773 | ||
2774 | ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA; | |
29208e57 | 2775 | size = tdata->size; |
9ac3e487 | 2776 | aligned_size = PERF_ALIGN(size, sizeof(u64)); |
9215545e TZ |
2777 | padding = aligned_size - size; |
2778 | ev.tracing_data.header.size = sizeof(ev.tracing_data); | |
2779 | ev.tracing_data.size = aligned_size; | |
2780 | ||
45694aa7 | 2781 | process(tool, &ev, NULL, NULL); |
9215545e | 2782 | |
29208e57 JO |
2783 | /* |
2784 | * The put function will copy all the tracing data | |
2785 | * stored in temp file to the pipe. | |
2786 | */ | |
2787 | tracing_data_put(tdata); | |
2788 | ||
9215545e TZ |
2789 | write_padded(fd, NULL, 0, padding); |
2790 | ||
2791 | return aligned_size; | |
2792 | } | |
2793 | ||
47c3d109 AH |
2794 | int perf_event__process_tracing_data(struct perf_tool *tool __maybe_unused, |
2795 | union perf_event *event, | |
8115d60c | 2796 | struct perf_session *session) |
9215545e | 2797 | { |
8115d60c | 2798 | ssize_t size_read, padding, size = event->tracing_data.size; |
cc9784bd JO |
2799 | int fd = perf_data_file__fd(session->file); |
2800 | off_t offset = lseek(fd, 0, SEEK_CUR); | |
9215545e TZ |
2801 | char buf[BUFSIZ]; |
2802 | ||
2803 | /* setup for reading amidst mmap */ | |
cc9784bd | 2804 | lseek(fd, offset + sizeof(struct tracing_data_event), |
9215545e TZ |
2805 | SEEK_SET); |
2806 | ||
29f5ffd3 | 2807 | size_read = trace_report(fd, &session->tevent, |
da378962 | 2808 | session->repipe); |
9ac3e487 | 2809 | padding = PERF_ALIGN(size_read, sizeof(u64)) - size_read; |
9215545e | 2810 | |
cc9784bd | 2811 | if (readn(fd, buf, padding) < 0) { |
2caa48a2 ACM |
2812 | pr_err("%s: reading input file", __func__); |
2813 | return -1; | |
2814 | } | |
454c407e TZ |
2815 | if (session->repipe) { |
2816 | int retw = write(STDOUT_FILENO, buf, padding); | |
2caa48a2 ACM |
2817 | if (retw <= 0 || retw != padding) { |
2818 | pr_err("%s: repiping tracing data padding", __func__); | |
2819 | return -1; | |
2820 | } | |
454c407e | 2821 | } |
9215545e | 2822 | |
2caa48a2 ACM |
2823 | if (size_read + padding != size) { |
2824 | pr_err("%s: tracing data size mismatch", __func__); | |
2825 | return -1; | |
2826 | } | |
9215545e | 2827 | |
831394bd | 2828 | perf_evlist__prepare_tracepoint_events(session->evlist, |
29f5ffd3 | 2829 | session->tevent.pevent); |
8b6ee4c5 | 2830 | |
9215545e TZ |
2831 | return size_read + padding; |
2832 | } | |
c7929e47 | 2833 | |
45694aa7 | 2834 | int perf_event__synthesize_build_id(struct perf_tool *tool, |
d20deb64 | 2835 | struct dso *pos, u16 misc, |
8115d60c | 2836 | perf_event__handler_t process, |
743eb868 | 2837 | struct machine *machine) |
c7929e47 | 2838 | { |
8115d60c | 2839 | union perf_event ev; |
c7929e47 TZ |
2840 | size_t len; |
2841 | int err = 0; | |
2842 | ||
2843 | if (!pos->hit) | |
2844 | return err; | |
2845 | ||
2846 | memset(&ev, 0, sizeof(ev)); | |
2847 | ||
2848 | len = pos->long_name_len + 1; | |
9ac3e487 | 2849 | len = PERF_ALIGN(len, NAME_ALIGN); |
c7929e47 TZ |
2850 | memcpy(&ev.build_id.build_id, pos->build_id, sizeof(pos->build_id)); |
2851 | ev.build_id.header.type = PERF_RECORD_HEADER_BUILD_ID; | |
2852 | ev.build_id.header.misc = misc; | |
23346f21 | 2853 | ev.build_id.pid = machine->pid; |
c7929e47 TZ |
2854 | ev.build_id.header.size = sizeof(ev.build_id) + len; |
2855 | memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len); | |
2856 | ||
45694aa7 | 2857 | err = process(tool, &ev, NULL, machine); |
c7929e47 TZ |
2858 | |
2859 | return err; | |
2860 | } | |
2861 | ||
1d037ca1 | 2862 | int perf_event__process_build_id(struct perf_tool *tool __maybe_unused, |
d20deb64 | 2863 | union perf_event *event, |
8115d60c | 2864 | struct perf_session *session) |
c7929e47 | 2865 | { |
8115d60c ACM |
2866 | __event_process_build_id(&event->build_id, |
2867 | event->build_id.filename, | |
a1645ce1 | 2868 | session); |
c7929e47 TZ |
2869 | return 0; |
2870 | } |