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 | ||
ffa517ad JO |
871 | static int write_stat(int fd __maybe_unused, |
872 | struct perf_header *h __maybe_unused, | |
873 | struct perf_evlist *evlist __maybe_unused) | |
874 | { | |
875 | return 0; | |
876 | } | |
877 | ||
7e94cfcc NK |
878 | static void print_hostname(struct perf_header *ph, int fd __maybe_unused, |
879 | FILE *fp) | |
fbe96f29 | 880 | { |
7e94cfcc | 881 | fprintf(fp, "# hostname : %s\n", ph->env.hostname); |
fbe96f29 SE |
882 | } |
883 | ||
7e94cfcc NK |
884 | static void print_osrelease(struct perf_header *ph, int fd __maybe_unused, |
885 | FILE *fp) | |
fbe96f29 | 886 | { |
7e94cfcc | 887 | fprintf(fp, "# os release : %s\n", ph->env.os_release); |
fbe96f29 SE |
888 | } |
889 | ||
7e94cfcc | 890 | static void print_arch(struct perf_header *ph, int fd __maybe_unused, FILE *fp) |
fbe96f29 | 891 | { |
7e94cfcc | 892 | fprintf(fp, "# arch : %s\n", ph->env.arch); |
fbe96f29 SE |
893 | } |
894 | ||
7e94cfcc NK |
895 | static void print_cpudesc(struct perf_header *ph, int fd __maybe_unused, |
896 | FILE *fp) | |
fbe96f29 | 897 | { |
7e94cfcc | 898 | fprintf(fp, "# cpudesc : %s\n", ph->env.cpu_desc); |
fbe96f29 SE |
899 | } |
900 | ||
7e94cfcc NK |
901 | static void print_nrcpus(struct perf_header *ph, int fd __maybe_unused, |
902 | FILE *fp) | |
fbe96f29 | 903 | { |
7e94cfcc NK |
904 | fprintf(fp, "# nrcpus online : %u\n", ph->env.nr_cpus_online); |
905 | fprintf(fp, "# nrcpus avail : %u\n", ph->env.nr_cpus_avail); | |
fbe96f29 SE |
906 | } |
907 | ||
7e94cfcc NK |
908 | static void print_version(struct perf_header *ph, int fd __maybe_unused, |
909 | FILE *fp) | |
fbe96f29 | 910 | { |
7e94cfcc | 911 | fprintf(fp, "# perf version : %s\n", ph->env.version); |
fbe96f29 SE |
912 | } |
913 | ||
7e94cfcc NK |
914 | static void print_cmdline(struct perf_header *ph, int fd __maybe_unused, |
915 | FILE *fp) | |
fbe96f29 | 916 | { |
7e94cfcc | 917 | int nr, i; |
fbe96f29 | 918 | |
7e94cfcc | 919 | nr = ph->env.nr_cmdline; |
fbe96f29 SE |
920 | |
921 | fprintf(fp, "# cmdline : "); | |
922 | ||
768dd3f3 JO |
923 | for (i = 0; i < nr; i++) |
924 | fprintf(fp, "%s ", ph->env.cmdline_argv[i]); | |
fbe96f29 SE |
925 | fputc('\n', fp); |
926 | } | |
927 | ||
7e94cfcc NK |
928 | static void print_cpu_topology(struct perf_header *ph, int fd __maybe_unused, |
929 | FILE *fp) | |
fbe96f29 | 930 | { |
7e94cfcc | 931 | int nr, i; |
fbe96f29 | 932 | char *str; |
2bb00d2f | 933 | int cpu_nr = ph->env.nr_cpus_online; |
fbe96f29 | 934 | |
7e94cfcc NK |
935 | nr = ph->env.nr_sibling_cores; |
936 | str = ph->env.sibling_cores; | |
fbe96f29 SE |
937 | |
938 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 939 | fprintf(fp, "# sibling cores : %s\n", str); |
7e94cfcc | 940 | str += strlen(str) + 1; |
fbe96f29 SE |
941 | } |
942 | ||
7e94cfcc NK |
943 | nr = ph->env.nr_sibling_threads; |
944 | str = ph->env.sibling_threads; | |
fbe96f29 SE |
945 | |
946 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 947 | fprintf(fp, "# sibling threads : %s\n", str); |
7e94cfcc | 948 | str += strlen(str) + 1; |
fbe96f29 | 949 | } |
2bb00d2f KL |
950 | |
951 | if (ph->env.cpu != NULL) { | |
952 | for (i = 0; i < cpu_nr; i++) | |
953 | fprintf(fp, "# CPU %d: Core ID %d, Socket ID %d\n", i, | |
954 | ph->env.cpu[i].core_id, ph->env.cpu[i].socket_id); | |
955 | } else | |
956 | fprintf(fp, "# Core ID and Socket ID information is not available\n"); | |
fbe96f29 SE |
957 | } |
958 | ||
4e1b9c67 | 959 | static void free_event_desc(struct perf_evsel *events) |
fbe96f29 | 960 | { |
4e1b9c67 RR |
961 | struct perf_evsel *evsel; |
962 | ||
963 | if (!events) | |
964 | return; | |
965 | ||
966 | for (evsel = events; evsel->attr.size; evsel++) { | |
74cf249d ACM |
967 | zfree(&evsel->name); |
968 | zfree(&evsel->id); | |
4e1b9c67 RR |
969 | } |
970 | ||
971 | free(events); | |
972 | } | |
973 | ||
974 | static struct perf_evsel * | |
975 | read_event_desc(struct perf_header *ph, int fd) | |
976 | { | |
977 | struct perf_evsel *evsel, *events = NULL; | |
978 | u64 *id; | |
fbe96f29 | 979 | void *buf = NULL; |
62db9068 SE |
980 | u32 nre, sz, nr, i, j; |
981 | ssize_t ret; | |
982 | size_t msz; | |
fbe96f29 SE |
983 | |
984 | /* number of events */ | |
5323f60c | 985 | ret = readn(fd, &nre, sizeof(nre)); |
fbe96f29 SE |
986 | if (ret != (ssize_t)sizeof(nre)) |
987 | goto error; | |
988 | ||
989 | if (ph->needs_swap) | |
990 | nre = bswap_32(nre); | |
991 | ||
5323f60c | 992 | ret = readn(fd, &sz, sizeof(sz)); |
fbe96f29 SE |
993 | if (ret != (ssize_t)sizeof(sz)) |
994 | goto error; | |
995 | ||
996 | if (ph->needs_swap) | |
997 | sz = bswap_32(sz); | |
998 | ||
62db9068 | 999 | /* buffer to hold on file attr struct */ |
fbe96f29 SE |
1000 | buf = malloc(sz); |
1001 | if (!buf) | |
1002 | goto error; | |
1003 | ||
4e1b9c67 RR |
1004 | /* the last event terminates with evsel->attr.size == 0: */ |
1005 | events = calloc(nre + 1, sizeof(*events)); | |
1006 | if (!events) | |
1007 | goto error; | |
1008 | ||
1009 | msz = sizeof(evsel->attr); | |
9fafd98f | 1010 | if (sz < msz) |
fbe96f29 SE |
1011 | msz = sz; |
1012 | ||
4e1b9c67 RR |
1013 | for (i = 0, evsel = events; i < nre; evsel++, i++) { |
1014 | evsel->idx = i; | |
fbe96f29 | 1015 | |
62db9068 SE |
1016 | /* |
1017 | * must read entire on-file attr struct to | |
1018 | * sync up with layout. | |
1019 | */ | |
5323f60c | 1020 | ret = readn(fd, buf, sz); |
fbe96f29 SE |
1021 | if (ret != (ssize_t)sz) |
1022 | goto error; | |
1023 | ||
1024 | if (ph->needs_swap) | |
1025 | perf_event__attr_swap(buf); | |
1026 | ||
4e1b9c67 | 1027 | memcpy(&evsel->attr, buf, msz); |
fbe96f29 | 1028 | |
5323f60c | 1029 | ret = readn(fd, &nr, sizeof(nr)); |
fbe96f29 SE |
1030 | if (ret != (ssize_t)sizeof(nr)) |
1031 | goto error; | |
1032 | ||
0807d2d8 | 1033 | if (ph->needs_swap) { |
fbe96f29 | 1034 | nr = bswap_32(nr); |
0807d2d8 ACM |
1035 | evsel->needs_swap = true; |
1036 | } | |
fbe96f29 | 1037 | |
4e1b9c67 RR |
1038 | evsel->name = do_read_string(fd, ph); |
1039 | ||
1040 | if (!nr) | |
1041 | continue; | |
1042 | ||
1043 | id = calloc(nr, sizeof(*id)); | |
1044 | if (!id) | |
1045 | goto error; | |
1046 | evsel->ids = nr; | |
1047 | evsel->id = id; | |
1048 | ||
1049 | for (j = 0 ; j < nr; j++) { | |
5323f60c | 1050 | ret = readn(fd, id, sizeof(*id)); |
4e1b9c67 RR |
1051 | if (ret != (ssize_t)sizeof(*id)) |
1052 | goto error; | |
1053 | if (ph->needs_swap) | |
1054 | *id = bswap_64(*id); | |
1055 | id++; | |
1056 | } | |
1057 | } | |
1058 | out: | |
04662523 | 1059 | free(buf); |
4e1b9c67 RR |
1060 | return events; |
1061 | error: | |
4cc97614 | 1062 | free_event_desc(events); |
4e1b9c67 RR |
1063 | events = NULL; |
1064 | goto out; | |
1065 | } | |
1066 | ||
2c5e8c52 PZ |
1067 | static int __desc_attr__fprintf(FILE *fp, const char *name, const char *val, |
1068 | void *priv __attribute__((unused))) | |
1069 | { | |
1070 | return fprintf(fp, ", %s = %s", name, val); | |
1071 | } | |
1072 | ||
4e1b9c67 RR |
1073 | static void print_event_desc(struct perf_header *ph, int fd, FILE *fp) |
1074 | { | |
1075 | struct perf_evsel *evsel, *events = read_event_desc(ph, fd); | |
1076 | u32 j; | |
1077 | u64 *id; | |
1078 | ||
1079 | if (!events) { | |
1080 | fprintf(fp, "# event desc: not available or unable to read\n"); | |
1081 | return; | |
1082 | } | |
1083 | ||
1084 | for (evsel = events; evsel->attr.size; evsel++) { | |
1085 | fprintf(fp, "# event : name = %s, ", evsel->name); | |
fbe96f29 | 1086 | |
4e1b9c67 | 1087 | if (evsel->ids) { |
fbe96f29 | 1088 | fprintf(fp, ", id = {"); |
4e1b9c67 RR |
1089 | for (j = 0, id = evsel->id; j < evsel->ids; j++, id++) { |
1090 | if (j) | |
1091 | fputc(',', fp); | |
1092 | fprintf(fp, " %"PRIu64, *id); | |
1093 | } | |
fbe96f29 | 1094 | fprintf(fp, " }"); |
4e1b9c67 | 1095 | } |
814c8c38 | 1096 | |
2c5e8c52 | 1097 | perf_event_attr__fprintf(fp, &evsel->attr, __desc_attr__fprintf, NULL); |
4e1b9c67 | 1098 | |
fbe96f29 SE |
1099 | fputc('\n', fp); |
1100 | } | |
4e1b9c67 RR |
1101 | |
1102 | free_event_desc(events); | |
fbe96f29 SE |
1103 | } |
1104 | ||
7e94cfcc | 1105 | static void print_total_mem(struct perf_header *ph, int fd __maybe_unused, |
1d037ca1 | 1106 | FILE *fp) |
fbe96f29 | 1107 | { |
7e94cfcc | 1108 | fprintf(fp, "# total memory : %Lu kB\n", ph->env.total_mem); |
fbe96f29 SE |
1109 | } |
1110 | ||
7e94cfcc | 1111 | static void print_numa_topology(struct perf_header *ph, int fd __maybe_unused, |
1d037ca1 | 1112 | FILE *fp) |
fbe96f29 | 1113 | { |
fbe96f29 | 1114 | u32 nr, c, i; |
7e94cfcc | 1115 | char *str, *tmp; |
fbe96f29 SE |
1116 | uint64_t mem_total, mem_free; |
1117 | ||
1118 | /* nr nodes */ | |
7e94cfcc NK |
1119 | nr = ph->env.nr_numa_nodes; |
1120 | str = ph->env.numa_nodes; | |
fbe96f29 SE |
1121 | |
1122 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 1123 | /* node number */ |
7e94cfcc NK |
1124 | c = strtoul(str, &tmp, 0); |
1125 | if (*tmp != ':') | |
fbe96f29 SE |
1126 | goto error; |
1127 | ||
7e94cfcc NK |
1128 | str = tmp + 1; |
1129 | mem_total = strtoull(str, &tmp, 0); | |
1130 | if (*tmp != ':') | |
fbe96f29 SE |
1131 | goto error; |
1132 | ||
7e94cfcc NK |
1133 | str = tmp + 1; |
1134 | mem_free = strtoull(str, &tmp, 0); | |
1135 | if (*tmp != ':') | |
fbe96f29 SE |
1136 | goto error; |
1137 | ||
fbe96f29 SE |
1138 | fprintf(fp, "# node%u meminfo : total = %"PRIu64" kB," |
1139 | " free = %"PRIu64" kB\n", | |
7e94cfcc | 1140 | c, mem_total, mem_free); |
fbe96f29 | 1141 | |
7e94cfcc | 1142 | str = tmp + 1; |
fbe96f29 | 1143 | fprintf(fp, "# node%u cpu list : %s\n", c, str); |
1234471e NK |
1144 | |
1145 | str += strlen(str) + 1; | |
fbe96f29 SE |
1146 | } |
1147 | return; | |
1148 | error: | |
1149 | fprintf(fp, "# numa topology : not available\n"); | |
1150 | } | |
1151 | ||
7e94cfcc | 1152 | static void print_cpuid(struct perf_header *ph, int fd __maybe_unused, FILE *fp) |
fbe96f29 | 1153 | { |
7e94cfcc | 1154 | fprintf(fp, "# cpuid : %s\n", ph->env.cpuid); |
fbe96f29 SE |
1155 | } |
1156 | ||
1d037ca1 | 1157 | static void print_branch_stack(struct perf_header *ph __maybe_unused, |
7e94cfcc | 1158 | int fd __maybe_unused, FILE *fp) |
330aa675 SE |
1159 | { |
1160 | fprintf(fp, "# contains samples with branch stack\n"); | |
1161 | } | |
1162 | ||
4025ea40 AH |
1163 | static void print_auxtrace(struct perf_header *ph __maybe_unused, |
1164 | int fd __maybe_unused, FILE *fp) | |
1165 | { | |
1166 | fprintf(fp, "# contains AUX area data (e.g. instruction trace)\n"); | |
1167 | } | |
1168 | ||
ffa517ad JO |
1169 | static void print_stat(struct perf_header *ph __maybe_unused, |
1170 | int fd __maybe_unused, FILE *fp) | |
1171 | { | |
1172 | fprintf(fp, "# contains stat data\n"); | |
1173 | } | |
1174 | ||
7e94cfcc NK |
1175 | static void print_pmu_mappings(struct perf_header *ph, int fd __maybe_unused, |
1176 | FILE *fp) | |
50a9667c RR |
1177 | { |
1178 | const char *delimiter = "# pmu mappings: "; | |
7e94cfcc | 1179 | char *str, *tmp; |
50a9667c RR |
1180 | u32 pmu_num; |
1181 | u32 type; | |
1182 | ||
7e94cfcc | 1183 | pmu_num = ph->env.nr_pmu_mappings; |
50a9667c RR |
1184 | if (!pmu_num) { |
1185 | fprintf(fp, "# pmu mappings: not available\n"); | |
1186 | return; | |
1187 | } | |
1188 | ||
7e94cfcc NK |
1189 | str = ph->env.pmu_mappings; |
1190 | ||
50a9667c | 1191 | while (pmu_num) { |
7e94cfcc NK |
1192 | type = strtoul(str, &tmp, 0); |
1193 | if (*tmp != ':') | |
1194 | goto error; | |
1195 | ||
1196 | str = tmp + 1; | |
1197 | fprintf(fp, "%s%s = %" PRIu32, delimiter, str, type); | |
be4a2ded | 1198 | |
50a9667c | 1199 | delimiter = ", "; |
7e94cfcc NK |
1200 | str += strlen(str) + 1; |
1201 | pmu_num--; | |
50a9667c RR |
1202 | } |
1203 | ||
1204 | fprintf(fp, "\n"); | |
1205 | ||
1206 | if (!pmu_num) | |
1207 | return; | |
1208 | error: | |
1209 | fprintf(fp, "# pmu mappings: unable to read\n"); | |
1210 | } | |
1211 | ||
a8bb559b NK |
1212 | static void print_group_desc(struct perf_header *ph, int fd __maybe_unused, |
1213 | FILE *fp) | |
1214 | { | |
1215 | struct perf_session *session; | |
1216 | struct perf_evsel *evsel; | |
1217 | u32 nr = 0; | |
1218 | ||
1219 | session = container_of(ph, struct perf_session, header); | |
1220 | ||
0050f7aa | 1221 | evlist__for_each(session->evlist, evsel) { |
a8bb559b NK |
1222 | if (perf_evsel__is_group_leader(evsel) && |
1223 | evsel->nr_members > 1) { | |
1224 | fprintf(fp, "# group: %s{%s", evsel->group_name ?: "", | |
1225 | perf_evsel__name(evsel)); | |
1226 | ||
1227 | nr = evsel->nr_members - 1; | |
1228 | } else if (nr) { | |
1229 | fprintf(fp, ",%s", perf_evsel__name(evsel)); | |
1230 | ||
1231 | if (--nr == 0) | |
1232 | fprintf(fp, "}\n"); | |
1233 | } | |
1234 | } | |
1235 | } | |
1236 | ||
08d95bd2 RR |
1237 | static int __event_process_build_id(struct build_id_event *bev, |
1238 | char *filename, | |
1239 | struct perf_session *session) | |
1240 | { | |
1241 | int err = -1; | |
08d95bd2 | 1242 | struct machine *machine; |
1f121b03 | 1243 | u16 cpumode; |
08d95bd2 RR |
1244 | struct dso *dso; |
1245 | enum dso_kernel_type dso_type; | |
1246 | ||
1247 | machine = perf_session__findnew_machine(session, bev->pid); | |
1248 | if (!machine) | |
1249 | goto out; | |
1250 | ||
1f121b03 | 1251 | cpumode = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
08d95bd2 | 1252 | |
1f121b03 | 1253 | switch (cpumode) { |
08d95bd2 RR |
1254 | case PERF_RECORD_MISC_KERNEL: |
1255 | dso_type = DSO_TYPE_KERNEL; | |
08d95bd2 RR |
1256 | break; |
1257 | case PERF_RECORD_MISC_GUEST_KERNEL: | |
1258 | dso_type = DSO_TYPE_GUEST_KERNEL; | |
08d95bd2 RR |
1259 | break; |
1260 | case PERF_RECORD_MISC_USER: | |
1261 | case PERF_RECORD_MISC_GUEST_USER: | |
1262 | dso_type = DSO_TYPE_USER; | |
08d95bd2 RR |
1263 | break; |
1264 | default: | |
1265 | goto out; | |
1266 | } | |
1267 | ||
aa7cc2ae | 1268 | dso = machine__findnew_dso(machine, filename); |
08d95bd2 RR |
1269 | if (dso != NULL) { |
1270 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; | |
1271 | ||
1272 | dso__set_build_id(dso, &bev->build_id); | |
1273 | ||
1f121b03 | 1274 | if (!is_kernel_module(filename, cpumode)) |
08d95bd2 RR |
1275 | dso->kernel = dso_type; |
1276 | ||
1277 | build_id__sprintf(dso->build_id, sizeof(dso->build_id), | |
1278 | sbuild_id); | |
1279 | pr_debug("build id event received for %s: %s\n", | |
1280 | dso->long_name, sbuild_id); | |
d3a7c489 | 1281 | dso__put(dso); |
08d95bd2 RR |
1282 | } |
1283 | ||
1284 | err = 0; | |
1285 | out: | |
1286 | return err; | |
1287 | } | |
1288 | ||
1289 | static int perf_header__read_build_ids_abi_quirk(struct perf_header *header, | |
1290 | int input, u64 offset, u64 size) | |
1291 | { | |
1292 | struct perf_session *session = container_of(header, struct perf_session, header); | |
1293 | struct { | |
1294 | struct perf_event_header header; | |
9ac3e487 | 1295 | u8 build_id[PERF_ALIGN(BUILD_ID_SIZE, sizeof(u64))]; |
08d95bd2 RR |
1296 | char filename[0]; |
1297 | } old_bev; | |
1298 | struct build_id_event bev; | |
1299 | char filename[PATH_MAX]; | |
1300 | u64 limit = offset + size; | |
1301 | ||
1302 | while (offset < limit) { | |
1303 | ssize_t len; | |
1304 | ||
5323f60c | 1305 | if (readn(input, &old_bev, sizeof(old_bev)) != sizeof(old_bev)) |
08d95bd2 RR |
1306 | return -1; |
1307 | ||
1308 | if (header->needs_swap) | |
1309 | perf_event_header__bswap(&old_bev.header); | |
1310 | ||
1311 | len = old_bev.header.size - sizeof(old_bev); | |
5323f60c | 1312 | if (readn(input, filename, len) != len) |
08d95bd2 RR |
1313 | return -1; |
1314 | ||
1315 | bev.header = old_bev.header; | |
1316 | ||
1317 | /* | |
1318 | * As the pid is the missing value, we need to fill | |
1319 | * it properly. The header.misc value give us nice hint. | |
1320 | */ | |
1321 | bev.pid = HOST_KERNEL_ID; | |
1322 | if (bev.header.misc == PERF_RECORD_MISC_GUEST_USER || | |
1323 | bev.header.misc == PERF_RECORD_MISC_GUEST_KERNEL) | |
1324 | bev.pid = DEFAULT_GUEST_KERNEL_ID; | |
1325 | ||
1326 | memcpy(bev.build_id, old_bev.build_id, sizeof(bev.build_id)); | |
1327 | __event_process_build_id(&bev, filename, session); | |
1328 | ||
1329 | offset += bev.header.size; | |
1330 | } | |
1331 | ||
1332 | return 0; | |
1333 | } | |
1334 | ||
1335 | static int perf_header__read_build_ids(struct perf_header *header, | |
1336 | int input, u64 offset, u64 size) | |
1337 | { | |
1338 | struct perf_session *session = container_of(header, struct perf_session, header); | |
1339 | struct build_id_event bev; | |
1340 | char filename[PATH_MAX]; | |
1341 | u64 limit = offset + size, orig_offset = offset; | |
1342 | int err = -1; | |
1343 | ||
1344 | while (offset < limit) { | |
1345 | ssize_t len; | |
1346 | ||
5323f60c | 1347 | if (readn(input, &bev, sizeof(bev)) != sizeof(bev)) |
08d95bd2 RR |
1348 | goto out; |
1349 | ||
1350 | if (header->needs_swap) | |
1351 | perf_event_header__bswap(&bev.header); | |
1352 | ||
1353 | len = bev.header.size - sizeof(bev); | |
5323f60c | 1354 | if (readn(input, filename, len) != len) |
08d95bd2 RR |
1355 | goto out; |
1356 | /* | |
1357 | * The a1645ce1 changeset: | |
1358 | * | |
1359 | * "perf: 'perf kvm' tool for monitoring guest performance from host" | |
1360 | * | |
1361 | * Added a field to struct build_id_event that broke the file | |
1362 | * format. | |
1363 | * | |
1364 | * Since the kernel build-id is the first entry, process the | |
1365 | * table using the old format if the well known | |
1366 | * '[kernel.kallsyms]' string for the kernel build-id has the | |
1367 | * first 4 characters chopped off (where the pid_t sits). | |
1368 | */ | |
1369 | if (memcmp(filename, "nel.kallsyms]", 13) == 0) { | |
1370 | if (lseek(input, orig_offset, SEEK_SET) == (off_t)-1) | |
1371 | return -1; | |
1372 | return perf_header__read_build_ids_abi_quirk(header, input, offset, size); | |
1373 | } | |
1374 | ||
1375 | __event_process_build_id(&bev, filename, session); | |
1376 | ||
1377 | offset += bev.header.size; | |
1378 | } | |
1379 | err = 0; | |
1380 | out: | |
1381 | return err; | |
1382 | } | |
1383 | ||
3d7eb86b NK |
1384 | static int process_tracing_data(struct perf_file_section *section __maybe_unused, |
1385 | struct perf_header *ph __maybe_unused, | |
1386 | int fd, void *data) | |
f1c67db7 | 1387 | { |
3dce2ce3 NK |
1388 | ssize_t ret = trace_report(fd, data, false); |
1389 | return ret < 0 ? -1 : 0; | |
f1c67db7 RR |
1390 | } |
1391 | ||
1392 | static int process_build_id(struct perf_file_section *section, | |
3d7eb86b | 1393 | struct perf_header *ph, int fd, |
1d037ca1 | 1394 | void *data __maybe_unused) |
f1c67db7 RR |
1395 | { |
1396 | if (perf_header__read_build_ids(ph, fd, section->offset, section->size)) | |
1397 | pr_debug("Failed to read buildids, continuing...\n"); | |
1398 | return 0; | |
1399 | } | |
1400 | ||
a1ae5655 | 1401 | static int process_hostname(struct perf_file_section *section __maybe_unused, |
3d7eb86b NK |
1402 | struct perf_header *ph, int fd, |
1403 | void *data __maybe_unused) | |
a1ae5655 NK |
1404 | { |
1405 | ph->env.hostname = do_read_string(fd, ph); | |
1406 | return ph->env.hostname ? 0 : -ENOMEM; | |
1407 | } | |
1408 | ||
1409 | static int process_osrelease(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1410 | struct perf_header *ph, int fd, |
1411 | void *data __maybe_unused) | |
a1ae5655 NK |
1412 | { |
1413 | ph->env.os_release = do_read_string(fd, ph); | |
1414 | return ph->env.os_release ? 0 : -ENOMEM; | |
1415 | } | |
1416 | ||
1417 | static int process_version(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1418 | struct perf_header *ph, int fd, |
1419 | void *data __maybe_unused) | |
a1ae5655 NK |
1420 | { |
1421 | ph->env.version = do_read_string(fd, ph); | |
1422 | return ph->env.version ? 0 : -ENOMEM; | |
1423 | } | |
1424 | ||
1425 | static int process_arch(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1426 | struct perf_header *ph, int fd, |
1427 | void *data __maybe_unused) | |
a1ae5655 NK |
1428 | { |
1429 | ph->env.arch = do_read_string(fd, ph); | |
1430 | return ph->env.arch ? 0 : -ENOMEM; | |
1431 | } | |
1432 | ||
1433 | static int process_nrcpus(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1434 | struct perf_header *ph, int fd, |
1435 | void *data __maybe_unused) | |
a1ae5655 | 1436 | { |
727ebd54 | 1437 | ssize_t ret; |
a1ae5655 NK |
1438 | u32 nr; |
1439 | ||
5323f60c | 1440 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1441 | if (ret != sizeof(nr)) |
1442 | return -1; | |
1443 | ||
1444 | if (ph->needs_swap) | |
1445 | nr = bswap_32(nr); | |
1446 | ||
caa47047 | 1447 | ph->env.nr_cpus_avail = nr; |
a1ae5655 | 1448 | |
5323f60c | 1449 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1450 | if (ret != sizeof(nr)) |
1451 | return -1; | |
1452 | ||
1453 | if (ph->needs_swap) | |
1454 | nr = bswap_32(nr); | |
1455 | ||
caa47047 | 1456 | ph->env.nr_cpus_online = nr; |
a1ae5655 NK |
1457 | return 0; |
1458 | } | |
1459 | ||
1460 | static int process_cpudesc(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1461 | struct perf_header *ph, int fd, |
1462 | void *data __maybe_unused) | |
a1ae5655 NK |
1463 | { |
1464 | ph->env.cpu_desc = do_read_string(fd, ph); | |
1465 | return ph->env.cpu_desc ? 0 : -ENOMEM; | |
1466 | } | |
1467 | ||
1468 | static int process_cpuid(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1469 | struct perf_header *ph, int fd, |
1470 | void *data __maybe_unused) | |
a1ae5655 NK |
1471 | { |
1472 | ph->env.cpuid = do_read_string(fd, ph); | |
1473 | return ph->env.cpuid ? 0 : -ENOMEM; | |
1474 | } | |
1475 | ||
1476 | static int process_total_mem(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1477 | struct perf_header *ph, int fd, |
1478 | void *data __maybe_unused) | |
a1ae5655 NK |
1479 | { |
1480 | uint64_t mem; | |
727ebd54 | 1481 | ssize_t ret; |
a1ae5655 | 1482 | |
5323f60c | 1483 | ret = readn(fd, &mem, sizeof(mem)); |
a1ae5655 NK |
1484 | if (ret != sizeof(mem)) |
1485 | return -1; | |
1486 | ||
1487 | if (ph->needs_swap) | |
1488 | mem = bswap_64(mem); | |
1489 | ||
1490 | ph->env.total_mem = mem; | |
1491 | return 0; | |
1492 | } | |
1493 | ||
7c2f7afd RR |
1494 | static struct perf_evsel * |
1495 | perf_evlist__find_by_index(struct perf_evlist *evlist, int idx) | |
1496 | { | |
1497 | struct perf_evsel *evsel; | |
1498 | ||
0050f7aa | 1499 | evlist__for_each(evlist, evsel) { |
7c2f7afd RR |
1500 | if (evsel->idx == idx) |
1501 | return evsel; | |
1502 | } | |
1503 | ||
1504 | return NULL; | |
1505 | } | |
1506 | ||
1507 | static void | |
3d7eb86b NK |
1508 | perf_evlist__set_event_name(struct perf_evlist *evlist, |
1509 | struct perf_evsel *event) | |
7c2f7afd RR |
1510 | { |
1511 | struct perf_evsel *evsel; | |
1512 | ||
1513 | if (!event->name) | |
1514 | return; | |
1515 | ||
1516 | evsel = perf_evlist__find_by_index(evlist, event->idx); | |
1517 | if (!evsel) | |
1518 | return; | |
1519 | ||
1520 | if (evsel->name) | |
1521 | return; | |
1522 | ||
1523 | evsel->name = strdup(event->name); | |
1524 | } | |
1525 | ||
1526 | static int | |
1d037ca1 | 1527 | process_event_desc(struct perf_file_section *section __maybe_unused, |
3d7eb86b | 1528 | struct perf_header *header, int fd, |
1d037ca1 | 1529 | void *data __maybe_unused) |
7c2f7afd | 1530 | { |
3d7eb86b | 1531 | struct perf_session *session; |
7c2f7afd RR |
1532 | struct perf_evsel *evsel, *events = read_event_desc(header, fd); |
1533 | ||
1534 | if (!events) | |
1535 | return 0; | |
1536 | ||
3d7eb86b | 1537 | session = container_of(header, struct perf_session, header); |
7c2f7afd RR |
1538 | for (evsel = events; evsel->attr.size; evsel++) |
1539 | perf_evlist__set_event_name(session->evlist, evsel); | |
1540 | ||
1541 | free_event_desc(events); | |
1542 | ||
1543 | return 0; | |
1544 | } | |
1545 | ||
768dd3f3 | 1546 | static int process_cmdline(struct perf_file_section *section, |
3d7eb86b NK |
1547 | struct perf_header *ph, int fd, |
1548 | void *data __maybe_unused) | |
a1ae5655 | 1549 | { |
727ebd54 | 1550 | ssize_t ret; |
768dd3f3 JO |
1551 | char *str, *cmdline = NULL, **argv = NULL; |
1552 | u32 nr, i, len = 0; | |
a1ae5655 | 1553 | |
5323f60c | 1554 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1555 | if (ret != sizeof(nr)) |
1556 | return -1; | |
1557 | ||
1558 | if (ph->needs_swap) | |
1559 | nr = bswap_32(nr); | |
1560 | ||
1561 | ph->env.nr_cmdline = nr; | |
768dd3f3 JO |
1562 | |
1563 | cmdline = zalloc(section->size + nr + 1); | |
1564 | if (!cmdline) | |
1565 | return -1; | |
1566 | ||
1567 | argv = zalloc(sizeof(char *) * (nr + 1)); | |
1568 | if (!argv) | |
1569 | goto error; | |
a1ae5655 NK |
1570 | |
1571 | for (i = 0; i < nr; i++) { | |
1572 | str = do_read_string(fd, ph); | |
1573 | if (!str) | |
1574 | goto error; | |
1575 | ||
768dd3f3 JO |
1576 | argv[i] = cmdline + len; |
1577 | memcpy(argv[i], str, strlen(str) + 1); | |
1578 | len += strlen(str) + 1; | |
a1ae5655 NK |
1579 | free(str); |
1580 | } | |
768dd3f3 JO |
1581 | ph->env.cmdline = cmdline; |
1582 | ph->env.cmdline_argv = (const char **) argv; | |
a1ae5655 NK |
1583 | return 0; |
1584 | ||
1585 | error: | |
768dd3f3 JO |
1586 | free(argv); |
1587 | free(cmdline); | |
a1ae5655 NK |
1588 | return -1; |
1589 | } | |
1590 | ||
2bb00d2f | 1591 | static int process_cpu_topology(struct perf_file_section *section, |
3d7eb86b NK |
1592 | struct perf_header *ph, int fd, |
1593 | void *data __maybe_unused) | |
a1ae5655 | 1594 | { |
727ebd54 | 1595 | ssize_t ret; |
a1ae5655 NK |
1596 | u32 nr, i; |
1597 | char *str; | |
1598 | struct strbuf sb; | |
2bb00d2f KL |
1599 | int cpu_nr = ph->env.nr_cpus_online; |
1600 | u64 size = 0; | |
1601 | ||
1602 | ph->env.cpu = calloc(cpu_nr, sizeof(*ph->env.cpu)); | |
1603 | if (!ph->env.cpu) | |
1604 | return -1; | |
a1ae5655 | 1605 | |
5323f60c | 1606 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 | 1607 | if (ret != sizeof(nr)) |
2bb00d2f | 1608 | goto free_cpu; |
a1ae5655 NK |
1609 | |
1610 | if (ph->needs_swap) | |
1611 | nr = bswap_32(nr); | |
1612 | ||
1613 | ph->env.nr_sibling_cores = nr; | |
2bb00d2f | 1614 | size += sizeof(u32); |
a1ae5655 NK |
1615 | strbuf_init(&sb, 128); |
1616 | ||
1617 | for (i = 0; i < nr; i++) { | |
1618 | str = do_read_string(fd, ph); | |
1619 | if (!str) | |
1620 | goto error; | |
1621 | ||
1622 | /* include a NULL character at the end */ | |
1623 | strbuf_add(&sb, str, strlen(str) + 1); | |
2bb00d2f | 1624 | size += string_size(str); |
a1ae5655 NK |
1625 | free(str); |
1626 | } | |
1627 | ph->env.sibling_cores = strbuf_detach(&sb, NULL); | |
1628 | ||
5323f60c | 1629 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1630 | if (ret != sizeof(nr)) |
1631 | return -1; | |
1632 | ||
1633 | if (ph->needs_swap) | |
1634 | nr = bswap_32(nr); | |
1635 | ||
1636 | ph->env.nr_sibling_threads = nr; | |
2bb00d2f | 1637 | size += sizeof(u32); |
a1ae5655 NK |
1638 | |
1639 | for (i = 0; i < nr; i++) { | |
1640 | str = do_read_string(fd, ph); | |
1641 | if (!str) | |
1642 | goto error; | |
1643 | ||
1644 | /* include a NULL character at the end */ | |
1645 | strbuf_add(&sb, str, strlen(str) + 1); | |
2bb00d2f | 1646 | size += string_size(str); |
a1ae5655 NK |
1647 | free(str); |
1648 | } | |
1649 | ph->env.sibling_threads = strbuf_detach(&sb, NULL); | |
2bb00d2f KL |
1650 | |
1651 | /* | |
1652 | * The header may be from old perf, | |
1653 | * which doesn't include core id and socket id information. | |
1654 | */ | |
1655 | if (section->size <= size) { | |
1656 | zfree(&ph->env.cpu); | |
1657 | return 0; | |
1658 | } | |
1659 | ||
1660 | for (i = 0; i < (u32)cpu_nr; i++) { | |
1661 | ret = readn(fd, &nr, sizeof(nr)); | |
1662 | if (ret != sizeof(nr)) | |
1663 | goto free_cpu; | |
1664 | ||
1665 | if (ph->needs_swap) | |
1666 | nr = bswap_32(nr); | |
1667 | ||
1668 | if (nr > (u32)cpu_nr) { | |
1669 | pr_debug("core_id number is too big." | |
1670 | "You may need to upgrade the perf tool.\n"); | |
1671 | goto free_cpu; | |
1672 | } | |
1673 | ph->env.cpu[i].core_id = nr; | |
1674 | ||
1675 | ret = readn(fd, &nr, sizeof(nr)); | |
1676 | if (ret != sizeof(nr)) | |
1677 | goto free_cpu; | |
1678 | ||
1679 | if (ph->needs_swap) | |
1680 | nr = bswap_32(nr); | |
1681 | ||
1682 | if (nr > (u32)cpu_nr) { | |
1683 | pr_debug("socket_id number is too big." | |
1684 | "You may need to upgrade the perf tool.\n"); | |
1685 | goto free_cpu; | |
1686 | } | |
1687 | ||
1688 | ph->env.cpu[i].socket_id = nr; | |
1689 | } | |
1690 | ||
a1ae5655 NK |
1691 | return 0; |
1692 | ||
1693 | error: | |
1694 | strbuf_release(&sb); | |
2bb00d2f KL |
1695 | free_cpu: |
1696 | zfree(&ph->env.cpu); | |
a1ae5655 NK |
1697 | return -1; |
1698 | } | |
1699 | ||
1700 | static int process_numa_topology(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1701 | struct perf_header *ph, int fd, |
1702 | void *data __maybe_unused) | |
a1ae5655 | 1703 | { |
727ebd54 | 1704 | ssize_t ret; |
a1ae5655 NK |
1705 | u32 nr, node, i; |
1706 | char *str; | |
1707 | uint64_t mem_total, mem_free; | |
1708 | struct strbuf sb; | |
1709 | ||
1710 | /* nr nodes */ | |
5323f60c | 1711 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1712 | if (ret != sizeof(nr)) |
1713 | goto error; | |
1714 | ||
1715 | if (ph->needs_swap) | |
1716 | nr = bswap_32(nr); | |
1717 | ||
1718 | ph->env.nr_numa_nodes = nr; | |
1719 | strbuf_init(&sb, 256); | |
1720 | ||
1721 | for (i = 0; i < nr; i++) { | |
1722 | /* node number */ | |
5323f60c | 1723 | ret = readn(fd, &node, sizeof(node)); |
a1ae5655 NK |
1724 | if (ret != sizeof(node)) |
1725 | goto error; | |
1726 | ||
5323f60c | 1727 | ret = readn(fd, &mem_total, sizeof(u64)); |
a1ae5655 NK |
1728 | if (ret != sizeof(u64)) |
1729 | goto error; | |
1730 | ||
5323f60c | 1731 | ret = readn(fd, &mem_free, sizeof(u64)); |
a1ae5655 NK |
1732 | if (ret != sizeof(u64)) |
1733 | goto error; | |
1734 | ||
1735 | if (ph->needs_swap) { | |
1736 | node = bswap_32(node); | |
1737 | mem_total = bswap_64(mem_total); | |
1738 | mem_free = bswap_64(mem_free); | |
1739 | } | |
1740 | ||
1741 | strbuf_addf(&sb, "%u:%"PRIu64":%"PRIu64":", | |
1742 | node, mem_total, mem_free); | |
1743 | ||
1744 | str = do_read_string(fd, ph); | |
1745 | if (!str) | |
1746 | goto error; | |
1747 | ||
1748 | /* include a NULL character at the end */ | |
1749 | strbuf_add(&sb, str, strlen(str) + 1); | |
1750 | free(str); | |
1751 | } | |
1752 | ph->env.numa_nodes = strbuf_detach(&sb, NULL); | |
1753 | return 0; | |
1754 | ||
1755 | error: | |
1756 | strbuf_release(&sb); | |
1757 | return -1; | |
1758 | } | |
1759 | ||
1760 | static int process_pmu_mappings(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1761 | struct perf_header *ph, int fd, |
1762 | void *data __maybe_unused) | |
a1ae5655 | 1763 | { |
727ebd54 | 1764 | ssize_t ret; |
a1ae5655 NK |
1765 | char *name; |
1766 | u32 pmu_num; | |
1767 | u32 type; | |
1768 | struct strbuf sb; | |
1769 | ||
5323f60c | 1770 | ret = readn(fd, &pmu_num, sizeof(pmu_num)); |
a1ae5655 NK |
1771 | if (ret != sizeof(pmu_num)) |
1772 | return -1; | |
1773 | ||
1774 | if (ph->needs_swap) | |
1775 | pmu_num = bswap_32(pmu_num); | |
1776 | ||
1777 | if (!pmu_num) { | |
1778 | pr_debug("pmu mappings not available\n"); | |
1779 | return 0; | |
1780 | } | |
1781 | ||
1782 | ph->env.nr_pmu_mappings = pmu_num; | |
1783 | strbuf_init(&sb, 128); | |
1784 | ||
1785 | while (pmu_num) { | |
5323f60c | 1786 | if (readn(fd, &type, sizeof(type)) != sizeof(type)) |
a1ae5655 NK |
1787 | goto error; |
1788 | if (ph->needs_swap) | |
1789 | type = bswap_32(type); | |
1790 | ||
1791 | name = do_read_string(fd, ph); | |
1792 | if (!name) | |
1793 | goto error; | |
1794 | ||
1795 | strbuf_addf(&sb, "%u:%s", type, name); | |
1796 | /* include a NULL character at the end */ | |
1797 | strbuf_add(&sb, "", 1); | |
1798 | ||
e0838e02 KL |
1799 | if (!strcmp(name, "msr")) |
1800 | ph->env.msr_pmu_type = type; | |
1801 | ||
a1ae5655 NK |
1802 | free(name); |
1803 | pmu_num--; | |
1804 | } | |
1805 | ph->env.pmu_mappings = strbuf_detach(&sb, NULL); | |
1806 | return 0; | |
1807 | ||
1808 | error: | |
1809 | strbuf_release(&sb); | |
1810 | return -1; | |
1811 | } | |
1812 | ||
a8bb559b NK |
1813 | static int process_group_desc(struct perf_file_section *section __maybe_unused, |
1814 | struct perf_header *ph, int fd, | |
1815 | void *data __maybe_unused) | |
1816 | { | |
1817 | size_t ret = -1; | |
1818 | u32 i, nr, nr_groups; | |
1819 | struct perf_session *session; | |
1820 | struct perf_evsel *evsel, *leader = NULL; | |
1821 | struct group_desc { | |
1822 | char *name; | |
1823 | u32 leader_idx; | |
1824 | u32 nr_members; | |
1825 | } *desc; | |
1826 | ||
1827 | if (readn(fd, &nr_groups, sizeof(nr_groups)) != sizeof(nr_groups)) | |
1828 | return -1; | |
1829 | ||
1830 | if (ph->needs_swap) | |
1831 | nr_groups = bswap_32(nr_groups); | |
1832 | ||
1833 | ph->env.nr_groups = nr_groups; | |
1834 | if (!nr_groups) { | |
1835 | pr_debug("group desc not available\n"); | |
1836 | return 0; | |
1837 | } | |
1838 | ||
1839 | desc = calloc(nr_groups, sizeof(*desc)); | |
1840 | if (!desc) | |
1841 | return -1; | |
1842 | ||
1843 | for (i = 0; i < nr_groups; i++) { | |
1844 | desc[i].name = do_read_string(fd, ph); | |
1845 | if (!desc[i].name) | |
1846 | goto out_free; | |
1847 | ||
1848 | if (readn(fd, &desc[i].leader_idx, sizeof(u32)) != sizeof(u32)) | |
1849 | goto out_free; | |
1850 | ||
1851 | if (readn(fd, &desc[i].nr_members, sizeof(u32)) != sizeof(u32)) | |
1852 | goto out_free; | |
1853 | ||
1854 | if (ph->needs_swap) { | |
1855 | desc[i].leader_idx = bswap_32(desc[i].leader_idx); | |
1856 | desc[i].nr_members = bswap_32(desc[i].nr_members); | |
1857 | } | |
1858 | } | |
1859 | ||
1860 | /* | |
1861 | * Rebuild group relationship based on the group_desc | |
1862 | */ | |
1863 | session = container_of(ph, struct perf_session, header); | |
1864 | session->evlist->nr_groups = nr_groups; | |
1865 | ||
1866 | i = nr = 0; | |
0050f7aa | 1867 | evlist__for_each(session->evlist, evsel) { |
a8bb559b NK |
1868 | if (evsel->idx == (int) desc[i].leader_idx) { |
1869 | evsel->leader = evsel; | |
1870 | /* {anon_group} is a dummy name */ | |
210e812f | 1871 | if (strcmp(desc[i].name, "{anon_group}")) { |
a8bb559b | 1872 | evsel->group_name = desc[i].name; |
210e812f NK |
1873 | desc[i].name = NULL; |
1874 | } | |
a8bb559b NK |
1875 | evsel->nr_members = desc[i].nr_members; |
1876 | ||
1877 | if (i >= nr_groups || nr > 0) { | |
1878 | pr_debug("invalid group desc\n"); | |
1879 | goto out_free; | |
1880 | } | |
1881 | ||
1882 | leader = evsel; | |
1883 | nr = evsel->nr_members - 1; | |
1884 | i++; | |
1885 | } else if (nr) { | |
1886 | /* This is a group member */ | |
1887 | evsel->leader = leader; | |
1888 | ||
1889 | nr--; | |
1890 | } | |
1891 | } | |
1892 | ||
1893 | if (i != nr_groups || nr != 0) { | |
1894 | pr_debug("invalid group desc\n"); | |
1895 | goto out_free; | |
1896 | } | |
1897 | ||
1898 | ret = 0; | |
1899 | out_free: | |
50a2740b | 1900 | for (i = 0; i < nr_groups; i++) |
74cf249d | 1901 | zfree(&desc[i].name); |
a8bb559b NK |
1902 | free(desc); |
1903 | ||
1904 | return ret; | |
1905 | } | |
1906 | ||
99fa2984 AH |
1907 | static int process_auxtrace(struct perf_file_section *section, |
1908 | struct perf_header *ph, int fd, | |
1909 | void *data __maybe_unused) | |
1910 | { | |
1911 | struct perf_session *session; | |
1912 | int err; | |
1913 | ||
1914 | session = container_of(ph, struct perf_session, header); | |
1915 | ||
1916 | err = auxtrace_index__process(fd, section->size, session, | |
1917 | ph->needs_swap); | |
1918 | if (err < 0) | |
1919 | pr_err("Failed to process auxtrace index\n"); | |
1920 | return err; | |
1921 | } | |
1922 | ||
fbe96f29 SE |
1923 | struct feature_ops { |
1924 | int (*write)(int fd, struct perf_header *h, struct perf_evlist *evlist); | |
1925 | void (*print)(struct perf_header *h, int fd, FILE *fp); | |
f1c67db7 | 1926 | int (*process)(struct perf_file_section *section, |
3d7eb86b | 1927 | struct perf_header *h, int fd, void *data); |
fbe96f29 SE |
1928 | const char *name; |
1929 | bool full_only; | |
1930 | }; | |
1931 | ||
8cdfa78a RR |
1932 | #define FEAT_OPA(n, func) \ |
1933 | [n] = { .name = #n, .write = write_##func, .print = print_##func } | |
f1c67db7 RR |
1934 | #define FEAT_OPP(n, func) \ |
1935 | [n] = { .name = #n, .write = write_##func, .print = print_##func, \ | |
1936 | .process = process_##func } | |
8cdfa78a | 1937 | #define FEAT_OPF(n, func) \ |
f1c67db7 | 1938 | [n] = { .name = #n, .write = write_##func, .print = print_##func, \ |
a1ae5655 | 1939 | .process = process_##func, .full_only = true } |
8cdfa78a RR |
1940 | |
1941 | /* feature_ops not implemented: */ | |
2eeaaa09 SE |
1942 | #define print_tracing_data NULL |
1943 | #define print_build_id NULL | |
fbe96f29 SE |
1944 | |
1945 | static const struct feature_ops feat_ops[HEADER_LAST_FEATURE] = { | |
2eeaaa09 | 1946 | FEAT_OPP(HEADER_TRACING_DATA, tracing_data), |
f1c67db7 | 1947 | FEAT_OPP(HEADER_BUILD_ID, build_id), |
a1ae5655 NK |
1948 | FEAT_OPP(HEADER_HOSTNAME, hostname), |
1949 | FEAT_OPP(HEADER_OSRELEASE, osrelease), | |
1950 | FEAT_OPP(HEADER_VERSION, version), | |
1951 | FEAT_OPP(HEADER_ARCH, arch), | |
1952 | FEAT_OPP(HEADER_NRCPUS, nrcpus), | |
1953 | FEAT_OPP(HEADER_CPUDESC, cpudesc), | |
37e9d750 | 1954 | FEAT_OPP(HEADER_CPUID, cpuid), |
a1ae5655 | 1955 | FEAT_OPP(HEADER_TOTAL_MEM, total_mem), |
7c2f7afd | 1956 | FEAT_OPP(HEADER_EVENT_DESC, event_desc), |
a1ae5655 | 1957 | FEAT_OPP(HEADER_CMDLINE, cmdline), |
8cdfa78a RR |
1958 | FEAT_OPF(HEADER_CPU_TOPOLOGY, cpu_topology), |
1959 | FEAT_OPF(HEADER_NUMA_TOPOLOGY, numa_topology), | |
330aa675 | 1960 | FEAT_OPA(HEADER_BRANCH_STACK, branch_stack), |
a1ae5655 | 1961 | FEAT_OPP(HEADER_PMU_MAPPINGS, pmu_mappings), |
a8bb559b | 1962 | FEAT_OPP(HEADER_GROUP_DESC, group_desc), |
99fa2984 | 1963 | FEAT_OPP(HEADER_AUXTRACE, auxtrace), |
ffa517ad | 1964 | FEAT_OPA(HEADER_STAT, stat), |
fbe96f29 SE |
1965 | }; |
1966 | ||
1967 | struct header_print_data { | |
1968 | FILE *fp; | |
1969 | bool full; /* extended list of headers */ | |
1970 | }; | |
1971 | ||
1972 | static int perf_file_section__fprintf_info(struct perf_file_section *section, | |
1973 | struct perf_header *ph, | |
1974 | int feat, int fd, void *data) | |
1975 | { | |
1976 | struct header_print_data *hd = data; | |
1977 | ||
1978 | if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) { | |
1979 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " | |
1980 | "%d, continuing...\n", section->offset, feat); | |
1981 | return 0; | |
1982 | } | |
b1e5a9be | 1983 | if (feat >= HEADER_LAST_FEATURE) { |
fbe96f29 | 1984 | pr_warning("unknown feature %d\n", feat); |
f7a8a133 | 1985 | return 0; |
fbe96f29 SE |
1986 | } |
1987 | if (!feat_ops[feat].print) | |
1988 | return 0; | |
1989 | ||
1990 | if (!feat_ops[feat].full_only || hd->full) | |
1991 | feat_ops[feat].print(ph, fd, hd->fp); | |
1992 | else | |
1993 | fprintf(hd->fp, "# %s info available, use -I to display\n", | |
1994 | feat_ops[feat].name); | |
1995 | ||
1996 | return 0; | |
1997 | } | |
1998 | ||
1999 | int perf_header__fprintf_info(struct perf_session *session, FILE *fp, bool full) | |
2000 | { | |
2001 | struct header_print_data hd; | |
2002 | struct perf_header *header = &session->header; | |
cc9784bd | 2003 | int fd = perf_data_file__fd(session->file); |
fbe96f29 SE |
2004 | hd.fp = fp; |
2005 | hd.full = full; | |
2006 | ||
2007 | perf_header__process_sections(header, fd, &hd, | |
2008 | perf_file_section__fprintf_info); | |
2009 | return 0; | |
2010 | } | |
2011 | ||
fbe96f29 SE |
2012 | static int do_write_feat(int fd, struct perf_header *h, int type, |
2013 | struct perf_file_section **p, | |
2014 | struct perf_evlist *evlist) | |
2015 | { | |
2016 | int err; | |
2017 | int ret = 0; | |
2018 | ||
2019 | if (perf_header__has_feat(h, type)) { | |
b1e5a9be RR |
2020 | if (!feat_ops[type].write) |
2021 | return -1; | |
fbe96f29 SE |
2022 | |
2023 | (*p)->offset = lseek(fd, 0, SEEK_CUR); | |
2024 | ||
2025 | err = feat_ops[type].write(fd, h, evlist); | |
2026 | if (err < 0) { | |
2027 | pr_debug("failed to write feature %d\n", type); | |
2028 | ||
2029 | /* undo anything written */ | |
2030 | lseek(fd, (*p)->offset, SEEK_SET); | |
2031 | ||
2032 | return -1; | |
2033 | } | |
2034 | (*p)->size = lseek(fd, 0, SEEK_CUR) - (*p)->offset; | |
2035 | (*p)++; | |
2036 | } | |
2037 | return ret; | |
2038 | } | |
2039 | ||
1c0b04d1 | 2040 | static int perf_header__adds_write(struct perf_header *header, |
361c99a6 | 2041 | struct perf_evlist *evlist, int fd) |
2ba08250 | 2042 | { |
9e827dd0 | 2043 | int nr_sections; |
fbe96f29 | 2044 | struct perf_file_section *feat_sec, *p; |
9e827dd0 FW |
2045 | int sec_size; |
2046 | u64 sec_start; | |
b1e5a9be | 2047 | int feat; |
fbe96f29 | 2048 | int err; |
9e827dd0 | 2049 | |
1c0b04d1 | 2050 | nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS); |
9e827dd0 | 2051 | if (!nr_sections) |
d5eed904 | 2052 | return 0; |
9e827dd0 | 2053 | |
91b98804 | 2054 | feat_sec = p = calloc(nr_sections, sizeof(*feat_sec)); |
d5eed904 ACM |
2055 | if (feat_sec == NULL) |
2056 | return -ENOMEM; | |
9e827dd0 FW |
2057 | |
2058 | sec_size = sizeof(*feat_sec) * nr_sections; | |
2059 | ||
8d541e97 | 2060 | sec_start = header->feat_offset; |
f887f301 | 2061 | lseek(fd, sec_start + sec_size, SEEK_SET); |
2ba08250 | 2062 | |
b1e5a9be RR |
2063 | for_each_set_bit(feat, header->adds_features, HEADER_FEAT_BITS) { |
2064 | if (do_write_feat(fd, header, feat, &p, evlist)) | |
2065 | perf_header__clear_feat(header, feat); | |
2066 | } | |
9e827dd0 | 2067 | |
f887f301 | 2068 | lseek(fd, sec_start, SEEK_SET); |
fbe96f29 SE |
2069 | /* |
2070 | * may write more than needed due to dropped feature, but | |
2071 | * this is okay, reader will skip the mising entries | |
2072 | */ | |
d5eed904 ACM |
2073 | err = do_write(fd, feat_sec, sec_size); |
2074 | if (err < 0) | |
2075 | pr_debug("failed to write feature section\n"); | |
9e827dd0 | 2076 | free(feat_sec); |
d5eed904 | 2077 | return err; |
9e827dd0 | 2078 | } |
2ba08250 | 2079 | |
8dc58101 TZ |
2080 | int perf_header__write_pipe(int fd) |
2081 | { | |
2082 | struct perf_pipe_file_header f_header; | |
2083 | int err; | |
2084 | ||
2085 | f_header = (struct perf_pipe_file_header){ | |
2086 | .magic = PERF_MAGIC, | |
2087 | .size = sizeof(f_header), | |
2088 | }; | |
2089 | ||
2090 | err = do_write(fd, &f_header, sizeof(f_header)); | |
2091 | if (err < 0) { | |
2092 | pr_debug("failed to write perf pipe header\n"); | |
2093 | return err; | |
2094 | } | |
2095 | ||
2096 | return 0; | |
2097 | } | |
2098 | ||
a91e5431 ACM |
2099 | int perf_session__write_header(struct perf_session *session, |
2100 | struct perf_evlist *evlist, | |
2101 | int fd, bool at_exit) | |
7c6a1c65 PZ |
2102 | { |
2103 | struct perf_file_header f_header; | |
2104 | struct perf_file_attr f_attr; | |
1c0b04d1 | 2105 | struct perf_header *header = &session->header; |
563aecb2 | 2106 | struct perf_evsel *evsel; |
944d62ba | 2107 | u64 attr_offset; |
a91e5431 | 2108 | int err; |
7c6a1c65 PZ |
2109 | |
2110 | lseek(fd, sizeof(f_header), SEEK_SET); | |
2111 | ||
0050f7aa | 2112 | evlist__for_each(session->evlist, evsel) { |
6606f873 RR |
2113 | evsel->id_offset = lseek(fd, 0, SEEK_CUR); |
2114 | err = do_write(fd, evsel->id, evsel->ids * sizeof(u64)); | |
d5eed904 ACM |
2115 | if (err < 0) { |
2116 | pr_debug("failed to write perf header\n"); | |
2117 | return err; | |
2118 | } | |
7c6a1c65 PZ |
2119 | } |
2120 | ||
944d62ba | 2121 | attr_offset = lseek(fd, 0, SEEK_CUR); |
7c6a1c65 | 2122 | |
0050f7aa | 2123 | evlist__for_each(evlist, evsel) { |
7c6a1c65 | 2124 | f_attr = (struct perf_file_attr){ |
6606f873 | 2125 | .attr = evsel->attr, |
7c6a1c65 | 2126 | .ids = { |
6606f873 RR |
2127 | .offset = evsel->id_offset, |
2128 | .size = evsel->ids * sizeof(u64), | |
7c6a1c65 PZ |
2129 | } |
2130 | }; | |
d5eed904 ACM |
2131 | err = do_write(fd, &f_attr, sizeof(f_attr)); |
2132 | if (err < 0) { | |
2133 | pr_debug("failed to write perf header attribute\n"); | |
2134 | return err; | |
2135 | } | |
7c6a1c65 PZ |
2136 | } |
2137 | ||
d645c442 AH |
2138 | if (!header->data_offset) |
2139 | header->data_offset = lseek(fd, 0, SEEK_CUR); | |
8d541e97 | 2140 | header->feat_offset = header->data_offset + header->data_size; |
7c6a1c65 | 2141 | |
d5eed904 | 2142 | if (at_exit) { |
1c0b04d1 | 2143 | err = perf_header__adds_write(header, evlist, fd); |
d5eed904 ACM |
2144 | if (err < 0) |
2145 | return err; | |
2146 | } | |
9e827dd0 | 2147 | |
7c6a1c65 PZ |
2148 | f_header = (struct perf_file_header){ |
2149 | .magic = PERF_MAGIC, | |
2150 | .size = sizeof(f_header), | |
2151 | .attr_size = sizeof(f_attr), | |
2152 | .attrs = { | |
944d62ba | 2153 | .offset = attr_offset, |
a91e5431 | 2154 | .size = evlist->nr_entries * sizeof(f_attr), |
7c6a1c65 PZ |
2155 | }, |
2156 | .data = { | |
1c0b04d1 ACM |
2157 | .offset = header->data_offset, |
2158 | .size = header->data_size, | |
7c6a1c65 | 2159 | }, |
44b3c578 | 2160 | /* event_types is ignored, store zeros */ |
7c6a1c65 PZ |
2161 | }; |
2162 | ||
1c0b04d1 | 2163 | memcpy(&f_header.adds_features, &header->adds_features, sizeof(header->adds_features)); |
2ba08250 | 2164 | |
7c6a1c65 | 2165 | lseek(fd, 0, SEEK_SET); |
d5eed904 ACM |
2166 | err = do_write(fd, &f_header, sizeof(f_header)); |
2167 | if (err < 0) { | |
2168 | pr_debug("failed to write perf header\n"); | |
2169 | return err; | |
2170 | } | |
1c0b04d1 | 2171 | lseek(fd, header->data_offset + header->data_size, SEEK_SET); |
7c6a1c65 | 2172 | |
d5eed904 | 2173 | return 0; |
7c6a1c65 PZ |
2174 | } |
2175 | ||
1c0b04d1 | 2176 | static int perf_header__getbuffer64(struct perf_header *header, |
ba21594c ACM |
2177 | int fd, void *buf, size_t size) |
2178 | { | |
1e7972cc | 2179 | if (readn(fd, buf, size) <= 0) |
ba21594c ACM |
2180 | return -1; |
2181 | ||
1c0b04d1 | 2182 | if (header->needs_swap) |
ba21594c ACM |
2183 | mem_bswap_64(buf, size); |
2184 | ||
2185 | return 0; | |
2186 | } | |
2187 | ||
1c0b04d1 | 2188 | int perf_header__process_sections(struct perf_header *header, int fd, |
fbe96f29 | 2189 | void *data, |
1c0b04d1 | 2190 | int (*process)(struct perf_file_section *section, |
b1e5a9be RR |
2191 | struct perf_header *ph, |
2192 | int feat, int fd, void *data)) | |
2ba08250 | 2193 | { |
b1e5a9be | 2194 | struct perf_file_section *feat_sec, *sec; |
9e827dd0 FW |
2195 | int nr_sections; |
2196 | int sec_size; | |
b1e5a9be RR |
2197 | int feat; |
2198 | int err; | |
9e827dd0 | 2199 | |
1c0b04d1 | 2200 | nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS); |
9e827dd0 | 2201 | if (!nr_sections) |
37562eac | 2202 | return 0; |
9e827dd0 | 2203 | |
91b98804 | 2204 | feat_sec = sec = calloc(nr_sections, sizeof(*feat_sec)); |
9e827dd0 | 2205 | if (!feat_sec) |
37562eac | 2206 | return -1; |
9e827dd0 FW |
2207 | |
2208 | sec_size = sizeof(*feat_sec) * nr_sections; | |
2209 | ||
8d541e97 | 2210 | lseek(fd, header->feat_offset, SEEK_SET); |
9e827dd0 | 2211 | |
b1e5a9be RR |
2212 | err = perf_header__getbuffer64(header, fd, feat_sec, sec_size); |
2213 | if (err < 0) | |
769885f3 | 2214 | goto out_free; |
9e827dd0 | 2215 | |
b1e5a9be RR |
2216 | for_each_set_bit(feat, header->adds_features, HEADER_LAST_FEATURE) { |
2217 | err = process(sec++, header, feat, fd, data); | |
2218 | if (err < 0) | |
2219 | goto out_free; | |
2ba08250 | 2220 | } |
b1e5a9be | 2221 | err = 0; |
769885f3 | 2222 | out_free: |
37562eac ACM |
2223 | free(feat_sec); |
2224 | return err; | |
769885f3 | 2225 | } |
4778d2e4 | 2226 | |
114382a0 SE |
2227 | static const int attr_file_abi_sizes[] = { |
2228 | [0] = PERF_ATTR_SIZE_VER0, | |
2229 | [1] = PERF_ATTR_SIZE_VER1, | |
239cc478 | 2230 | [2] = PERF_ATTR_SIZE_VER2, |
0f6a3015 | 2231 | [3] = PERF_ATTR_SIZE_VER3, |
6a21c0b5 | 2232 | [4] = PERF_ATTR_SIZE_VER4, |
114382a0 SE |
2233 | 0, |
2234 | }; | |
2235 | ||
2236 | /* | |
2237 | * In the legacy file format, the magic number is not used to encode endianness. | |
2238 | * hdr_sz was used to encode endianness. But given that hdr_sz can vary based | |
2239 | * on ABI revisions, we need to try all combinations for all endianness to | |
2240 | * detect the endianness. | |
2241 | */ | |
2242 | static int try_all_file_abis(uint64_t hdr_sz, struct perf_header *ph) | |
73323f54 | 2243 | { |
114382a0 SE |
2244 | uint64_t ref_size, attr_size; |
2245 | int i; | |
73323f54 | 2246 | |
114382a0 SE |
2247 | for (i = 0 ; attr_file_abi_sizes[i]; i++) { |
2248 | ref_size = attr_file_abi_sizes[i] | |
2249 | + sizeof(struct perf_file_section); | |
2250 | if (hdr_sz != ref_size) { | |
2251 | attr_size = bswap_64(hdr_sz); | |
2252 | if (attr_size != ref_size) | |
2253 | continue; | |
73323f54 | 2254 | |
114382a0 SE |
2255 | ph->needs_swap = true; |
2256 | } | |
2257 | pr_debug("ABI%d perf.data file detected, need_swap=%d\n", | |
2258 | i, | |
2259 | ph->needs_swap); | |
2260 | return 0; | |
2261 | } | |
2262 | /* could not determine endianness */ | |
2263 | return -1; | |
2264 | } | |
73323f54 | 2265 | |
114382a0 SE |
2266 | #define PERF_PIPE_HDR_VER0 16 |
2267 | ||
2268 | static const size_t attr_pipe_abi_sizes[] = { | |
2269 | [0] = PERF_PIPE_HDR_VER0, | |
2270 | 0, | |
2271 | }; | |
2272 | ||
2273 | /* | |
2274 | * In the legacy pipe format, there is an implicit assumption that endiannesss | |
2275 | * between host recording the samples, and host parsing the samples is the | |
2276 | * same. This is not always the case given that the pipe output may always be | |
2277 | * redirected into a file and analyzed on a different machine with possibly a | |
2278 | * different endianness and perf_event ABI revsions in the perf tool itself. | |
2279 | */ | |
2280 | static int try_all_pipe_abis(uint64_t hdr_sz, struct perf_header *ph) | |
2281 | { | |
2282 | u64 attr_size; | |
2283 | int i; | |
2284 | ||
2285 | for (i = 0 ; attr_pipe_abi_sizes[i]; i++) { | |
2286 | if (hdr_sz != attr_pipe_abi_sizes[i]) { | |
2287 | attr_size = bswap_64(hdr_sz); | |
2288 | if (attr_size != hdr_sz) | |
2289 | continue; | |
73323f54 SE |
2290 | |
2291 | ph->needs_swap = true; | |
2292 | } | |
114382a0 | 2293 | pr_debug("Pipe ABI%d perf.data file detected\n", i); |
73323f54 SE |
2294 | return 0; |
2295 | } | |
114382a0 SE |
2296 | return -1; |
2297 | } | |
2298 | ||
e84ba4e2 FT |
2299 | bool is_perf_magic(u64 magic) |
2300 | { | |
2301 | if (!memcmp(&magic, __perf_magic1, sizeof(magic)) | |
2302 | || magic == __perf_magic2 | |
2303 | || magic == __perf_magic2_sw) | |
2304 | return true; | |
2305 | ||
2306 | return false; | |
2307 | } | |
2308 | ||
114382a0 SE |
2309 | static int check_magic_endian(u64 magic, uint64_t hdr_sz, |
2310 | bool is_pipe, struct perf_header *ph) | |
2311 | { | |
2312 | int ret; | |
2313 | ||
2314 | /* check for legacy format */ | |
2315 | ret = memcmp(&magic, __perf_magic1, sizeof(magic)); | |
2316 | if (ret == 0) { | |
2a08c3ec | 2317 | ph->version = PERF_HEADER_VERSION_1; |
114382a0 SE |
2318 | pr_debug("legacy perf.data format\n"); |
2319 | if (is_pipe) | |
2320 | return try_all_pipe_abis(hdr_sz, ph); | |
2321 | ||
2322 | return try_all_file_abis(hdr_sz, ph); | |
2323 | } | |
2324 | /* | |
2325 | * the new magic number serves two purposes: | |
2326 | * - unique number to identify actual perf.data files | |
2327 | * - encode endianness of file | |
2328 | */ | |
f7913971 | 2329 | ph->version = PERF_HEADER_VERSION_2; |
73323f54 | 2330 | |
114382a0 SE |
2331 | /* check magic number with one endianness */ |
2332 | if (magic == __perf_magic2) | |
73323f54 SE |
2333 | return 0; |
2334 | ||
114382a0 SE |
2335 | /* check magic number with opposite endianness */ |
2336 | if (magic != __perf_magic2_sw) | |
73323f54 SE |
2337 | return -1; |
2338 | ||
2339 | ph->needs_swap = true; | |
2340 | ||
2341 | return 0; | |
2342 | } | |
2343 | ||
1c0b04d1 | 2344 | int perf_file_header__read(struct perf_file_header *header, |
37562eac ACM |
2345 | struct perf_header *ph, int fd) |
2346 | { | |
727ebd54 | 2347 | ssize_t ret; |
73323f54 | 2348 | |
37562eac | 2349 | lseek(fd, 0, SEEK_SET); |
37562eac | 2350 | |
73323f54 SE |
2351 | ret = readn(fd, header, sizeof(*header)); |
2352 | if (ret <= 0) | |
37562eac ACM |
2353 | return -1; |
2354 | ||
114382a0 SE |
2355 | if (check_magic_endian(header->magic, |
2356 | header->attr_size, false, ph) < 0) { | |
2357 | pr_debug("magic/endian check failed\n"); | |
73323f54 | 2358 | return -1; |
114382a0 | 2359 | } |
ba21594c | 2360 | |
73323f54 | 2361 | if (ph->needs_swap) { |
1c0b04d1 | 2362 | mem_bswap_64(header, offsetof(struct perf_file_header, |
73323f54 | 2363 | adds_features)); |
ba21594c ACM |
2364 | } |
2365 | ||
1c0b04d1 | 2366 | if (header->size != sizeof(*header)) { |
37562eac | 2367 | /* Support the previous format */ |
1c0b04d1 ACM |
2368 | if (header->size == offsetof(typeof(*header), adds_features)) |
2369 | bitmap_zero(header->adds_features, HEADER_FEAT_BITS); | |
37562eac ACM |
2370 | else |
2371 | return -1; | |
d327fa43 | 2372 | } else if (ph->needs_swap) { |
d327fa43 DA |
2373 | /* |
2374 | * feature bitmap is declared as an array of unsigned longs -- | |
2375 | * not good since its size can differ between the host that | |
2376 | * generated the data file and the host analyzing the file. | |
2377 | * | |
2378 | * We need to handle endianness, but we don't know the size of | |
2379 | * the unsigned long where the file was generated. Take a best | |
2380 | * guess at determining it: try 64-bit swap first (ie., file | |
2381 | * created on a 64-bit host), and check if the hostname feature | |
2382 | * bit is set (this feature bit is forced on as of fbe96f2). | |
2383 | * If the bit is not, undo the 64-bit swap and try a 32-bit | |
2384 | * swap. If the hostname bit is still not set (e.g., older data | |
2385 | * file), punt and fallback to the original behavior -- | |
2386 | * clearing all feature bits and setting buildid. | |
2387 | */ | |
80c0120a DA |
2388 | mem_bswap_64(&header->adds_features, |
2389 | BITS_TO_U64(HEADER_FEAT_BITS)); | |
d327fa43 DA |
2390 | |
2391 | if (!test_bit(HEADER_HOSTNAME, header->adds_features)) { | |
80c0120a DA |
2392 | /* unswap as u64 */ |
2393 | mem_bswap_64(&header->adds_features, | |
2394 | BITS_TO_U64(HEADER_FEAT_BITS)); | |
2395 | ||
2396 | /* unswap as u32 */ | |
2397 | mem_bswap_32(&header->adds_features, | |
2398 | BITS_TO_U32(HEADER_FEAT_BITS)); | |
d327fa43 DA |
2399 | } |
2400 | ||
2401 | if (!test_bit(HEADER_HOSTNAME, header->adds_features)) { | |
2402 | bitmap_zero(header->adds_features, HEADER_FEAT_BITS); | |
2403 | set_bit(HEADER_BUILD_ID, header->adds_features); | |
2404 | } | |
4778d2e4 | 2405 | } |
9e827dd0 | 2406 | |
1c0b04d1 | 2407 | memcpy(&ph->adds_features, &header->adds_features, |
ba21594c | 2408 | sizeof(ph->adds_features)); |
37562eac | 2409 | |
1c0b04d1 ACM |
2410 | ph->data_offset = header->data.offset; |
2411 | ph->data_size = header->data.size; | |
8d541e97 | 2412 | ph->feat_offset = header->data.offset + header->data.size; |
37562eac ACM |
2413 | return 0; |
2414 | } | |
2415 | ||
1c0b04d1 | 2416 | static int perf_file_section__process(struct perf_file_section *section, |
ba21594c | 2417 | struct perf_header *ph, |
da378962 | 2418 | int feat, int fd, void *data) |
37562eac | 2419 | { |
1c0b04d1 | 2420 | if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) { |
9486aa38 | 2421 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " |
1c0b04d1 | 2422 | "%d, continuing...\n", section->offset, feat); |
37562eac ACM |
2423 | return 0; |
2424 | } | |
2425 | ||
b1e5a9be RR |
2426 | if (feat >= HEADER_LAST_FEATURE) { |
2427 | pr_debug("unknown feature %d, continuing...\n", feat); | |
2428 | return 0; | |
2429 | } | |
2430 | ||
f1c67db7 RR |
2431 | if (!feat_ops[feat].process) |
2432 | return 0; | |
37562eac | 2433 | |
3d7eb86b | 2434 | return feat_ops[feat].process(section, ph, fd, data); |
37562eac | 2435 | } |
2ba08250 | 2436 | |
1c0b04d1 | 2437 | static int perf_file_header__read_pipe(struct perf_pipe_file_header *header, |
454c407e TZ |
2438 | struct perf_header *ph, int fd, |
2439 | bool repipe) | |
7c6a1c65 | 2440 | { |
727ebd54 | 2441 | ssize_t ret; |
73323f54 SE |
2442 | |
2443 | ret = readn(fd, header, sizeof(*header)); | |
2444 | if (ret <= 0) | |
2445 | return -1; | |
2446 | ||
114382a0 SE |
2447 | if (check_magic_endian(header->magic, header->size, true, ph) < 0) { |
2448 | pr_debug("endian/magic failed\n"); | |
8dc58101 | 2449 | return -1; |
114382a0 SE |
2450 | } |
2451 | ||
2452 | if (ph->needs_swap) | |
2453 | header->size = bswap_64(header->size); | |
8dc58101 | 2454 | |
1c0b04d1 | 2455 | if (repipe && do_write(STDOUT_FILENO, header, sizeof(*header)) < 0) |
454c407e TZ |
2456 | return -1; |
2457 | ||
8dc58101 TZ |
2458 | return 0; |
2459 | } | |
2460 | ||
d4339569 | 2461 | static int perf_header__read_pipe(struct perf_session *session) |
8dc58101 | 2462 | { |
1c0b04d1 | 2463 | struct perf_header *header = &session->header; |
8dc58101 TZ |
2464 | struct perf_pipe_file_header f_header; |
2465 | ||
cc9784bd JO |
2466 | if (perf_file_header__read_pipe(&f_header, header, |
2467 | perf_data_file__fd(session->file), | |
454c407e | 2468 | session->repipe) < 0) { |
8dc58101 TZ |
2469 | pr_debug("incompatible file format\n"); |
2470 | return -EINVAL; | |
2471 | } | |
2472 | ||
8dc58101 TZ |
2473 | return 0; |
2474 | } | |
2475 | ||
69996df4 SE |
2476 | static int read_attr(int fd, struct perf_header *ph, |
2477 | struct perf_file_attr *f_attr) | |
2478 | { | |
2479 | struct perf_event_attr *attr = &f_attr->attr; | |
2480 | size_t sz, left; | |
2481 | size_t our_sz = sizeof(f_attr->attr); | |
727ebd54 | 2482 | ssize_t ret; |
69996df4 SE |
2483 | |
2484 | memset(f_attr, 0, sizeof(*f_attr)); | |
2485 | ||
2486 | /* read minimal guaranteed structure */ | |
2487 | ret = readn(fd, attr, PERF_ATTR_SIZE_VER0); | |
2488 | if (ret <= 0) { | |
2489 | pr_debug("cannot read %d bytes of header attr\n", | |
2490 | PERF_ATTR_SIZE_VER0); | |
2491 | return -1; | |
2492 | } | |
2493 | ||
2494 | /* on file perf_event_attr size */ | |
2495 | sz = attr->size; | |
114382a0 | 2496 | |
69996df4 SE |
2497 | if (ph->needs_swap) |
2498 | sz = bswap_32(sz); | |
2499 | ||
2500 | if (sz == 0) { | |
2501 | /* assume ABI0 */ | |
2502 | sz = PERF_ATTR_SIZE_VER0; | |
2503 | } else if (sz > our_sz) { | |
2504 | pr_debug("file uses a more recent and unsupported ABI" | |
2505 | " (%zu bytes extra)\n", sz - our_sz); | |
2506 | return -1; | |
2507 | } | |
2508 | /* what we have not yet read and that we know about */ | |
2509 | left = sz - PERF_ATTR_SIZE_VER0; | |
2510 | if (left) { | |
2511 | void *ptr = attr; | |
2512 | ptr += PERF_ATTR_SIZE_VER0; | |
2513 | ||
2514 | ret = readn(fd, ptr, left); | |
2515 | } | |
2516 | /* read perf_file_section, ids are read in caller */ | |
2517 | ret = readn(fd, &f_attr->ids, sizeof(f_attr->ids)); | |
2518 | ||
2519 | return ret <= 0 ? -1 : 0; | |
2520 | } | |
2521 | ||
831394bd NK |
2522 | static int perf_evsel__prepare_tracepoint_event(struct perf_evsel *evsel, |
2523 | struct pevent *pevent) | |
cb9dd49e | 2524 | { |
831394bd | 2525 | struct event_format *event; |
cb9dd49e ACM |
2526 | char bf[128]; |
2527 | ||
831394bd NK |
2528 | /* already prepared */ |
2529 | if (evsel->tp_format) | |
2530 | return 0; | |
2531 | ||
3dce2ce3 NK |
2532 | if (pevent == NULL) { |
2533 | pr_debug("broken or missing trace data\n"); | |
2534 | return -1; | |
2535 | } | |
2536 | ||
831394bd | 2537 | event = pevent_find_event(pevent, evsel->attr.config); |
cb9dd49e ACM |
2538 | if (event == NULL) |
2539 | return -1; | |
2540 | ||
831394bd NK |
2541 | if (!evsel->name) { |
2542 | snprintf(bf, sizeof(bf), "%s:%s", event->system, event->name); | |
2543 | evsel->name = strdup(bf); | |
2544 | if (evsel->name == NULL) | |
2545 | return -1; | |
2546 | } | |
cb9dd49e | 2547 | |
fcf65bf1 | 2548 | evsel->tp_format = event; |
cb9dd49e ACM |
2549 | return 0; |
2550 | } | |
2551 | ||
831394bd NK |
2552 | static int perf_evlist__prepare_tracepoint_events(struct perf_evlist *evlist, |
2553 | struct pevent *pevent) | |
cb9dd49e ACM |
2554 | { |
2555 | struct perf_evsel *pos; | |
2556 | ||
0050f7aa | 2557 | evlist__for_each(evlist, pos) { |
831394bd NK |
2558 | if (pos->attr.type == PERF_TYPE_TRACEPOINT && |
2559 | perf_evsel__prepare_tracepoint_event(pos, pevent)) | |
cb9dd49e ACM |
2560 | return -1; |
2561 | } | |
2562 | ||
2563 | return 0; | |
2564 | } | |
2565 | ||
d4339569 | 2566 | int perf_session__read_header(struct perf_session *session) |
8dc58101 | 2567 | { |
cc9784bd | 2568 | struct perf_data_file *file = session->file; |
1c0b04d1 | 2569 | struct perf_header *header = &session->header; |
ba21594c | 2570 | struct perf_file_header f_header; |
7c6a1c65 PZ |
2571 | struct perf_file_attr f_attr; |
2572 | u64 f_id; | |
7c6a1c65 | 2573 | int nr_attrs, nr_ids, i, j; |
cc9784bd | 2574 | int fd = perf_data_file__fd(file); |
7c6a1c65 | 2575 | |
334fe7a3 | 2576 | session->evlist = perf_evlist__new(); |
a91e5431 ACM |
2577 | if (session->evlist == NULL) |
2578 | return -ENOMEM; | |
2579 | ||
2c07144d | 2580 | session->evlist->env = &header->env; |
4cde998d | 2581 | session->machines.host.env = &header->env; |
cc9784bd | 2582 | if (perf_data_file__is_pipe(file)) |
d4339569 | 2583 | return perf_header__read_pipe(session); |
8dc58101 | 2584 | |
69996df4 | 2585 | if (perf_file_header__read(&f_header, header, fd) < 0) |
4dc0a04b | 2586 | return -EINVAL; |
7c6a1c65 | 2587 | |
b314e5cf NK |
2588 | /* |
2589 | * Sanity check that perf.data was written cleanly; data size is | |
2590 | * initialized to 0 and updated only if the on_exit function is run. | |
2591 | * If data size is still 0 then the file contains only partial | |
2592 | * information. Just warn user and process it as much as it can. | |
2593 | */ | |
2594 | if (f_header.data.size == 0) { | |
2595 | pr_warning("WARNING: The %s file's data size field is 0 which is unexpected.\n" | |
2596 | "Was the 'perf record' command properly terminated?\n", | |
cc9784bd | 2597 | file->path); |
b314e5cf NK |
2598 | } |
2599 | ||
69996df4 | 2600 | nr_attrs = f_header.attrs.size / f_header.attr_size; |
7c6a1c65 PZ |
2601 | lseek(fd, f_header.attrs.offset, SEEK_SET); |
2602 | ||
2603 | for (i = 0; i < nr_attrs; i++) { | |
a91e5431 | 2604 | struct perf_evsel *evsel; |
1c222bce | 2605 | off_t tmp; |
7c6a1c65 | 2606 | |
69996df4 | 2607 | if (read_attr(fd, header, &f_attr) < 0) |
769885f3 | 2608 | goto out_errno; |
ba21594c | 2609 | |
1060ab85 DA |
2610 | if (header->needs_swap) { |
2611 | f_attr.ids.size = bswap_64(f_attr.ids.size); | |
2612 | f_attr.ids.offset = bswap_64(f_attr.ids.offset); | |
eda3913b | 2613 | perf_event__attr_swap(&f_attr.attr); |
1060ab85 | 2614 | } |
eda3913b | 2615 | |
1c222bce | 2616 | tmp = lseek(fd, 0, SEEK_CUR); |
ef503831 | 2617 | evsel = perf_evsel__new(&f_attr.attr); |
7c6a1c65 | 2618 | |
a91e5431 ACM |
2619 | if (evsel == NULL) |
2620 | goto out_delete_evlist; | |
0807d2d8 ACM |
2621 | |
2622 | evsel->needs_swap = header->needs_swap; | |
a91e5431 ACM |
2623 | /* |
2624 | * Do it before so that if perf_evsel__alloc_id fails, this | |
2625 | * entry gets purged too at perf_evlist__delete(). | |
2626 | */ | |
2627 | perf_evlist__add(session->evlist, evsel); | |
7c6a1c65 PZ |
2628 | |
2629 | nr_ids = f_attr.ids.size / sizeof(u64); | |
a91e5431 ACM |
2630 | /* |
2631 | * We don't have the cpu and thread maps on the header, so | |
2632 | * for allocating the perf_sample_id table we fake 1 cpu and | |
2633 | * hattr->ids threads. | |
2634 | */ | |
2635 | if (perf_evsel__alloc_id(evsel, 1, nr_ids)) | |
2636 | goto out_delete_evlist; | |
2637 | ||
7c6a1c65 PZ |
2638 | lseek(fd, f_attr.ids.offset, SEEK_SET); |
2639 | ||
2640 | for (j = 0; j < nr_ids; j++) { | |
1c0b04d1 | 2641 | if (perf_header__getbuffer64(header, fd, &f_id, sizeof(f_id))) |
769885f3 | 2642 | goto out_errno; |
7c6a1c65 | 2643 | |
a91e5431 | 2644 | perf_evlist__id_add(session->evlist, evsel, 0, j, f_id); |
7c6a1c65 | 2645 | } |
11deb1f9 | 2646 | |
7c6a1c65 PZ |
2647 | lseek(fd, tmp, SEEK_SET); |
2648 | } | |
2649 | ||
d04b35f8 ACM |
2650 | symbol_conf.nr_events = nr_attrs; |
2651 | ||
29f5ffd3 | 2652 | perf_header__process_sections(header, fd, &session->tevent, |
fbe96f29 | 2653 | perf_file_section__process); |
4778d2e4 | 2654 | |
831394bd | 2655 | if (perf_evlist__prepare_tracepoint_events(session->evlist, |
29f5ffd3 | 2656 | session->tevent.pevent)) |
cb9dd49e ACM |
2657 | goto out_delete_evlist; |
2658 | ||
4dc0a04b | 2659 | return 0; |
769885f3 ACM |
2660 | out_errno: |
2661 | return -errno; | |
a91e5431 ACM |
2662 | |
2663 | out_delete_evlist: | |
2664 | perf_evlist__delete(session->evlist); | |
2665 | session->evlist = NULL; | |
2666 | return -ENOMEM; | |
7c6a1c65 | 2667 | } |
0d3a5c88 | 2668 | |
45694aa7 | 2669 | int perf_event__synthesize_attr(struct perf_tool *tool, |
f4d83436 | 2670 | struct perf_event_attr *attr, u32 ids, u64 *id, |
743eb868 | 2671 | perf_event__handler_t process) |
2c46dbb5 | 2672 | { |
8115d60c | 2673 | union perf_event *ev; |
2c46dbb5 TZ |
2674 | size_t size; |
2675 | int err; | |
2676 | ||
2677 | size = sizeof(struct perf_event_attr); | |
9ac3e487 | 2678 | size = PERF_ALIGN(size, sizeof(u64)); |
2c46dbb5 TZ |
2679 | size += sizeof(struct perf_event_header); |
2680 | size += ids * sizeof(u64); | |
2681 | ||
2682 | ev = malloc(size); | |
2683 | ||
ce47dc56 CS |
2684 | if (ev == NULL) |
2685 | return -ENOMEM; | |
2686 | ||
2c46dbb5 TZ |
2687 | ev->attr.attr = *attr; |
2688 | memcpy(ev->attr.id, id, ids * sizeof(u64)); | |
2689 | ||
2690 | ev->attr.header.type = PERF_RECORD_HEADER_ATTR; | |
f4d83436 | 2691 | ev->attr.header.size = (u16)size; |
2c46dbb5 | 2692 | |
f4d83436 RR |
2693 | if (ev->attr.header.size == size) |
2694 | err = process(tool, ev, NULL, NULL); | |
2695 | else | |
2696 | err = -E2BIG; | |
2c46dbb5 TZ |
2697 | |
2698 | free(ev); | |
2699 | ||
2700 | return err; | |
2701 | } | |
2702 | ||
a6e52817 JO |
2703 | static struct event_update_event * |
2704 | event_update_event__new(size_t size, u64 type, u64 id) | |
2705 | { | |
2706 | struct event_update_event *ev; | |
2707 | ||
2708 | size += sizeof(*ev); | |
2709 | size = PERF_ALIGN(size, sizeof(u64)); | |
2710 | ||
2711 | ev = zalloc(size); | |
2712 | if (ev) { | |
2713 | ev->header.type = PERF_RECORD_EVENT_UPDATE; | |
2714 | ev->header.size = (u16)size; | |
2715 | ev->type = type; | |
2716 | ev->id = id; | |
2717 | } | |
2718 | return ev; | |
2719 | } | |
2720 | ||
2721 | int | |
2722 | perf_event__synthesize_event_update_unit(struct perf_tool *tool, | |
2723 | struct perf_evsel *evsel, | |
2724 | perf_event__handler_t process) | |
2725 | { | |
2726 | struct event_update_event *ev; | |
2727 | size_t size = strlen(evsel->unit); | |
2728 | int err; | |
2729 | ||
2730 | ev = event_update_event__new(size + 1, PERF_EVENT_UPDATE__UNIT, evsel->id[0]); | |
2731 | if (ev == NULL) | |
2732 | return -ENOMEM; | |
2733 | ||
2734 | strncpy(ev->data, evsel->unit, size); | |
2735 | err = process(tool, (union perf_event *)ev, NULL, NULL); | |
2736 | free(ev); | |
2737 | return err; | |
2738 | } | |
2739 | ||
daeecbc0 JO |
2740 | int |
2741 | perf_event__synthesize_event_update_scale(struct perf_tool *tool, | |
2742 | struct perf_evsel *evsel, | |
2743 | perf_event__handler_t process) | |
2744 | { | |
2745 | struct event_update_event *ev; | |
2746 | struct event_update_event_scale *ev_data; | |
2747 | int err; | |
2748 | ||
2749 | ev = event_update_event__new(sizeof(*ev_data), PERF_EVENT_UPDATE__SCALE, evsel->id[0]); | |
2750 | if (ev == NULL) | |
2751 | return -ENOMEM; | |
2752 | ||
2753 | ev_data = (struct event_update_event_scale *) ev->data; | |
2754 | ev_data->scale = evsel->scale; | |
2755 | err = process(tool, (union perf_event*) ev, NULL, NULL); | |
2756 | free(ev); | |
2757 | return err; | |
2758 | } | |
2759 | ||
802c9048 JO |
2760 | int |
2761 | perf_event__synthesize_event_update_name(struct perf_tool *tool, | |
2762 | struct perf_evsel *evsel, | |
2763 | perf_event__handler_t process) | |
2764 | { | |
2765 | struct event_update_event *ev; | |
2766 | size_t len = strlen(evsel->name); | |
2767 | int err; | |
2768 | ||
2769 | ev = event_update_event__new(len + 1, PERF_EVENT_UPDATE__NAME, evsel->id[0]); | |
2770 | if (ev == NULL) | |
2771 | return -ENOMEM; | |
2772 | ||
2773 | strncpy(ev->data, evsel->name, len); | |
2774 | err = process(tool, (union perf_event*) ev, NULL, NULL); | |
2775 | free(ev); | |
2776 | return err; | |
2777 | } | |
daeecbc0 | 2778 | |
86ebb09f JO |
2779 | int |
2780 | perf_event__synthesize_event_update_cpus(struct perf_tool *tool, | |
2781 | struct perf_evsel *evsel, | |
2782 | perf_event__handler_t process) | |
2783 | { | |
2784 | size_t size = sizeof(struct event_update_event); | |
2785 | struct event_update_event *ev; | |
2786 | int max, err; | |
2787 | u16 type; | |
2788 | ||
2789 | if (!evsel->own_cpus) | |
2790 | return 0; | |
2791 | ||
2792 | ev = cpu_map_data__alloc(evsel->own_cpus, &size, &type, &max); | |
2793 | if (!ev) | |
2794 | return -ENOMEM; | |
2795 | ||
2796 | ev->header.type = PERF_RECORD_EVENT_UPDATE; | |
2797 | ev->header.size = (u16)size; | |
2798 | ev->type = PERF_EVENT_UPDATE__CPUS; | |
2799 | ev->id = evsel->id[0]; | |
2800 | ||
2801 | cpu_map_data__synthesize((struct cpu_map_data *) ev->data, | |
2802 | evsel->own_cpus, | |
2803 | type, max); | |
2804 | ||
2805 | err = process(tool, (union perf_event*) ev, NULL, NULL); | |
2806 | free(ev); | |
2807 | return err; | |
2808 | } | |
2809 | ||
c853f939 JO |
2810 | size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp) |
2811 | { | |
2812 | struct event_update_event *ev = &event->event_update; | |
2813 | struct event_update_event_scale *ev_scale; | |
2814 | struct event_update_event_cpus *ev_cpus; | |
2815 | struct cpu_map *map; | |
2816 | size_t ret; | |
2817 | ||
2818 | ret = fprintf(fp, "\n... id: %" PRIu64 "\n", ev->id); | |
2819 | ||
2820 | switch (ev->type) { | |
2821 | case PERF_EVENT_UPDATE__SCALE: | |
2822 | ev_scale = (struct event_update_event_scale *) ev->data; | |
2823 | ret += fprintf(fp, "... scale: %f\n", ev_scale->scale); | |
2824 | break; | |
2825 | case PERF_EVENT_UPDATE__UNIT: | |
2826 | ret += fprintf(fp, "... unit: %s\n", ev->data); | |
2827 | break; | |
2828 | case PERF_EVENT_UPDATE__NAME: | |
2829 | ret += fprintf(fp, "... name: %s\n", ev->data); | |
2830 | break; | |
2831 | case PERF_EVENT_UPDATE__CPUS: | |
2832 | ev_cpus = (struct event_update_event_cpus *) ev->data; | |
2833 | ret += fprintf(fp, "... "); | |
2834 | ||
2835 | map = cpu_map__new_data(&ev_cpus->cpus); | |
2836 | if (map) | |
2837 | ret += cpu_map__fprintf(map, fp); | |
2838 | else | |
2839 | ret += fprintf(fp, "failed to get cpus\n"); | |
2840 | break; | |
2841 | default: | |
2842 | ret += fprintf(fp, "... unknown type\n"); | |
2843 | break; | |
2844 | } | |
2845 | ||
2846 | return ret; | |
2847 | } | |
86ebb09f | 2848 | |
45694aa7 | 2849 | int perf_event__synthesize_attrs(struct perf_tool *tool, |
d20deb64 | 2850 | struct perf_session *session, |
a91e5431 | 2851 | perf_event__handler_t process) |
2c46dbb5 | 2852 | { |
6606f873 | 2853 | struct perf_evsel *evsel; |
a91e5431 | 2854 | int err = 0; |
2c46dbb5 | 2855 | |
0050f7aa | 2856 | evlist__for_each(session->evlist, evsel) { |
6606f873 RR |
2857 | err = perf_event__synthesize_attr(tool, &evsel->attr, evsel->ids, |
2858 | evsel->id, process); | |
2c46dbb5 TZ |
2859 | if (err) { |
2860 | pr_debug("failed to create perf header attribute\n"); | |
2861 | return err; | |
2862 | } | |
2863 | } | |
2864 | ||
2865 | return err; | |
2866 | } | |
2867 | ||
47c3d109 AH |
2868 | int perf_event__process_attr(struct perf_tool *tool __maybe_unused, |
2869 | union perf_event *event, | |
10d0f086 | 2870 | struct perf_evlist **pevlist) |
2c46dbb5 | 2871 | { |
f4d83436 | 2872 | u32 i, ids, n_ids; |
a91e5431 | 2873 | struct perf_evsel *evsel; |
10d0f086 | 2874 | struct perf_evlist *evlist = *pevlist; |
2c46dbb5 | 2875 | |
10d0f086 | 2876 | if (evlist == NULL) { |
334fe7a3 | 2877 | *pevlist = evlist = perf_evlist__new(); |
10d0f086 | 2878 | if (evlist == NULL) |
a91e5431 ACM |
2879 | return -ENOMEM; |
2880 | } | |
2881 | ||
ef503831 | 2882 | evsel = perf_evsel__new(&event->attr.attr); |
a91e5431 | 2883 | if (evsel == NULL) |
2c46dbb5 TZ |
2884 | return -ENOMEM; |
2885 | ||
10d0f086 | 2886 | perf_evlist__add(evlist, evsel); |
a91e5431 | 2887 | |
8115d60c ACM |
2888 | ids = event->header.size; |
2889 | ids -= (void *)&event->attr.id - (void *)event; | |
2c46dbb5 | 2890 | n_ids = ids / sizeof(u64); |
a91e5431 ACM |
2891 | /* |
2892 | * We don't have the cpu and thread maps on the header, so | |
2893 | * for allocating the perf_sample_id table we fake 1 cpu and | |
2894 | * hattr->ids threads. | |
2895 | */ | |
2896 | if (perf_evsel__alloc_id(evsel, 1, n_ids)) | |
2897 | return -ENOMEM; | |
2c46dbb5 TZ |
2898 | |
2899 | for (i = 0; i < n_ids; i++) { | |
10d0f086 | 2900 | perf_evlist__id_add(evlist, evsel, 0, i, event->attr.id[i]); |
2c46dbb5 TZ |
2901 | } |
2902 | ||
7e0d6fc9 AH |
2903 | symbol_conf.nr_events = evlist->nr_entries; |
2904 | ||
2c46dbb5 TZ |
2905 | return 0; |
2906 | } | |
cd19a035 | 2907 | |
ffe77725 JO |
2908 | int perf_event__process_event_update(struct perf_tool *tool __maybe_unused, |
2909 | union perf_event *event, | |
2910 | struct perf_evlist **pevlist) | |
2911 | { | |
2912 | struct event_update_event *ev = &event->event_update; | |
daeecbc0 | 2913 | struct event_update_event_scale *ev_scale; |
86ebb09f | 2914 | struct event_update_event_cpus *ev_cpus; |
ffe77725 JO |
2915 | struct perf_evlist *evlist; |
2916 | struct perf_evsel *evsel; | |
86ebb09f | 2917 | struct cpu_map *map; |
ffe77725 JO |
2918 | |
2919 | if (!pevlist || *pevlist == NULL) | |
2920 | return -EINVAL; | |
2921 | ||
2922 | evlist = *pevlist; | |
2923 | ||
2924 | evsel = perf_evlist__id2evsel(evlist, ev->id); | |
2925 | if (evsel == NULL) | |
2926 | return -EINVAL; | |
2927 | ||
a6e52817 JO |
2928 | switch (ev->type) { |
2929 | case PERF_EVENT_UPDATE__UNIT: | |
2930 | evsel->unit = strdup(ev->data); | |
daeecbc0 | 2931 | break; |
802c9048 JO |
2932 | case PERF_EVENT_UPDATE__NAME: |
2933 | evsel->name = strdup(ev->data); | |
2934 | break; | |
daeecbc0 JO |
2935 | case PERF_EVENT_UPDATE__SCALE: |
2936 | ev_scale = (struct event_update_event_scale *) ev->data; | |
2937 | evsel->scale = ev_scale->scale; | |
86ebb09f JO |
2938 | case PERF_EVENT_UPDATE__CPUS: |
2939 | ev_cpus = (struct event_update_event_cpus *) ev->data; | |
2940 | ||
2941 | map = cpu_map__new_data(&ev_cpus->cpus); | |
2942 | if (map) | |
2943 | evsel->own_cpus = map; | |
2944 | else | |
2945 | pr_err("failed to get event_update cpus\n"); | |
a6e52817 JO |
2946 | default: |
2947 | break; | |
2948 | } | |
2949 | ||
ffe77725 JO |
2950 | return 0; |
2951 | } | |
2952 | ||
45694aa7 | 2953 | int perf_event__synthesize_tracing_data(struct perf_tool *tool, int fd, |
d20deb64 | 2954 | struct perf_evlist *evlist, |
743eb868 | 2955 | perf_event__handler_t process) |
9215545e | 2956 | { |
8115d60c | 2957 | union perf_event ev; |
29208e57 | 2958 | struct tracing_data *tdata; |
9215545e | 2959 | ssize_t size = 0, aligned_size = 0, padding; |
1d037ca1 | 2960 | int err __maybe_unused = 0; |
9215545e | 2961 | |
29208e57 JO |
2962 | /* |
2963 | * We are going to store the size of the data followed | |
2964 | * by the data contents. Since the fd descriptor is a pipe, | |
2965 | * we cannot seek back to store the size of the data once | |
2966 | * we know it. Instead we: | |
2967 | * | |
2968 | * - write the tracing data to the temp file | |
2969 | * - get/write the data size to pipe | |
2970 | * - write the tracing data from the temp file | |
2971 | * to the pipe | |
2972 | */ | |
2973 | tdata = tracing_data_get(&evlist->entries, fd, true); | |
2974 | if (!tdata) | |
2975 | return -1; | |
2976 | ||
9215545e TZ |
2977 | memset(&ev, 0, sizeof(ev)); |
2978 | ||
2979 | ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA; | |
29208e57 | 2980 | size = tdata->size; |
9ac3e487 | 2981 | aligned_size = PERF_ALIGN(size, sizeof(u64)); |
9215545e TZ |
2982 | padding = aligned_size - size; |
2983 | ev.tracing_data.header.size = sizeof(ev.tracing_data); | |
2984 | ev.tracing_data.size = aligned_size; | |
2985 | ||
45694aa7 | 2986 | process(tool, &ev, NULL, NULL); |
9215545e | 2987 | |
29208e57 JO |
2988 | /* |
2989 | * The put function will copy all the tracing data | |
2990 | * stored in temp file to the pipe. | |
2991 | */ | |
2992 | tracing_data_put(tdata); | |
2993 | ||
9215545e TZ |
2994 | write_padded(fd, NULL, 0, padding); |
2995 | ||
2996 | return aligned_size; | |
2997 | } | |
2998 | ||
47c3d109 AH |
2999 | int perf_event__process_tracing_data(struct perf_tool *tool __maybe_unused, |
3000 | union perf_event *event, | |
8115d60c | 3001 | struct perf_session *session) |
9215545e | 3002 | { |
8115d60c | 3003 | ssize_t size_read, padding, size = event->tracing_data.size; |
cc9784bd JO |
3004 | int fd = perf_data_file__fd(session->file); |
3005 | off_t offset = lseek(fd, 0, SEEK_CUR); | |
9215545e TZ |
3006 | char buf[BUFSIZ]; |
3007 | ||
3008 | /* setup for reading amidst mmap */ | |
cc9784bd | 3009 | lseek(fd, offset + sizeof(struct tracing_data_event), |
9215545e TZ |
3010 | SEEK_SET); |
3011 | ||
29f5ffd3 | 3012 | size_read = trace_report(fd, &session->tevent, |
da378962 | 3013 | session->repipe); |
9ac3e487 | 3014 | padding = PERF_ALIGN(size_read, sizeof(u64)) - size_read; |
9215545e | 3015 | |
cc9784bd | 3016 | if (readn(fd, buf, padding) < 0) { |
2caa48a2 ACM |
3017 | pr_err("%s: reading input file", __func__); |
3018 | return -1; | |
3019 | } | |
454c407e TZ |
3020 | if (session->repipe) { |
3021 | int retw = write(STDOUT_FILENO, buf, padding); | |
2caa48a2 ACM |
3022 | if (retw <= 0 || retw != padding) { |
3023 | pr_err("%s: repiping tracing data padding", __func__); | |
3024 | return -1; | |
3025 | } | |
454c407e | 3026 | } |
9215545e | 3027 | |
2caa48a2 ACM |
3028 | if (size_read + padding != size) { |
3029 | pr_err("%s: tracing data size mismatch", __func__); | |
3030 | return -1; | |
3031 | } | |
9215545e | 3032 | |
831394bd | 3033 | perf_evlist__prepare_tracepoint_events(session->evlist, |
29f5ffd3 | 3034 | session->tevent.pevent); |
8b6ee4c5 | 3035 | |
9215545e TZ |
3036 | return size_read + padding; |
3037 | } | |
c7929e47 | 3038 | |
45694aa7 | 3039 | int perf_event__synthesize_build_id(struct perf_tool *tool, |
d20deb64 | 3040 | struct dso *pos, u16 misc, |
8115d60c | 3041 | perf_event__handler_t process, |
743eb868 | 3042 | struct machine *machine) |
c7929e47 | 3043 | { |
8115d60c | 3044 | union perf_event ev; |
c7929e47 TZ |
3045 | size_t len; |
3046 | int err = 0; | |
3047 | ||
3048 | if (!pos->hit) | |
3049 | return err; | |
3050 | ||
3051 | memset(&ev, 0, sizeof(ev)); | |
3052 | ||
3053 | len = pos->long_name_len + 1; | |
9ac3e487 | 3054 | len = PERF_ALIGN(len, NAME_ALIGN); |
c7929e47 TZ |
3055 | memcpy(&ev.build_id.build_id, pos->build_id, sizeof(pos->build_id)); |
3056 | ev.build_id.header.type = PERF_RECORD_HEADER_BUILD_ID; | |
3057 | ev.build_id.header.misc = misc; | |
23346f21 | 3058 | ev.build_id.pid = machine->pid; |
c7929e47 TZ |
3059 | ev.build_id.header.size = sizeof(ev.build_id) + len; |
3060 | memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len); | |
3061 | ||
45694aa7 | 3062 | err = process(tool, &ev, NULL, machine); |
c7929e47 TZ |
3063 | |
3064 | return err; | |
3065 | } | |
3066 | ||
1d037ca1 | 3067 | int perf_event__process_build_id(struct perf_tool *tool __maybe_unused, |
d20deb64 | 3068 | union perf_event *event, |
8115d60c | 3069 | struct perf_session *session) |
c7929e47 | 3070 | { |
8115d60c ACM |
3071 | __event_process_build_id(&event->build_id, |
3072 | event->build_id.filename, | |
a1645ce1 | 3073 | session); |
c7929e47 TZ |
3074 | return 0; |
3075 | } |