Commit | Line | Data |
---|---|---|
a43783ae | 1 | #include <errno.h> |
fd20e811 | 2 | #include <inttypes.h> |
a9072bc0 | 3 | #include "util.h" |
a067558e | 4 | #include "string2.h" |
391e4206 | 5 | #include <sys/param.h> |
7c6a1c65 | 6 | #include <sys/types.h> |
ba21594c | 7 | #include <byteswap.h> |
7c6a1c65 PZ |
8 | #include <unistd.h> |
9 | #include <stdio.h> | |
10 | #include <stdlib.h> | |
8671dab9 | 11 | #include <linux/list.h> |
ba21594c | 12 | #include <linux/kernel.h> |
b1e5a9be | 13 | #include <linux/bitops.h> |
7a8ef4c4 ACM |
14 | #include <sys/stat.h> |
15 | #include <sys/types.h> | |
fbe96f29 | 16 | #include <sys/utsname.h> |
7a8ef4c4 | 17 | #include <unistd.h> |
7c6a1c65 | 18 | |
361c99a6 | 19 | #include "evlist.h" |
a91e5431 | 20 | #include "evsel.h" |
7c6a1c65 | 21 | #include "header.h" |
98521b38 | 22 | #include "memswap.h" |
03456a15 FW |
23 | #include "../perf.h" |
24 | #include "trace-event.h" | |
301a0b02 | 25 | #include "session.h" |
8671dab9 | 26 | #include "symbol.h" |
4778d2e4 | 27 | #include "debug.h" |
fbe96f29 | 28 | #include "cpumap.h" |
50a9667c | 29 | #include "pmu.h" |
7dbf4dcf | 30 | #include "vdso.h" |
a1ae5655 | 31 | #include "strbuf.h" |
ebb296c2 | 32 | #include "build-id.h" |
cc9784bd | 33 | #include "data.h" |
720e98b5 JO |
34 | #include <api/fs/fs.h> |
35 | #include "asm/bug.h" | |
7c6a1c65 | 36 | |
3d689ed6 ACM |
37 | #include "sane_ctype.h" |
38 | ||
73323f54 SE |
39 | /* |
40 | * magic2 = "PERFILE2" | |
41 | * must be a numerical value to let the endianness | |
42 | * determine the memory layout. That way we are able | |
43 | * to detect endianness when reading the perf.data file | |
44 | * back. | |
45 | * | |
46 | * we check for legacy (PERFFILE) format. | |
47 | */ | |
48 | static const char *__perf_magic1 = "PERFFILE"; | |
49 | static const u64 __perf_magic2 = 0x32454c4946524550ULL; | |
50 | static const u64 __perf_magic2_sw = 0x50455246494c4532ULL; | |
7c6a1c65 | 51 | |
73323f54 | 52 | #define PERF_MAGIC __perf_magic2 |
7c6a1c65 | 53 | |
d25ed5d9 SA |
54 | const char perf_version_string[] = PERF_VERSION; |
55 | ||
7c6a1c65 | 56 | struct perf_file_attr { |
cdd6c482 | 57 | struct perf_event_attr attr; |
7c6a1c65 PZ |
58 | struct perf_file_section ids; |
59 | }; | |
60 | ||
1c0b04d1 | 61 | void perf_header__set_feat(struct perf_header *header, int feat) |
8d06367f | 62 | { |
1c0b04d1 | 63 | set_bit(feat, header->adds_features); |
8d06367f ACM |
64 | } |
65 | ||
1c0b04d1 | 66 | void perf_header__clear_feat(struct perf_header *header, int feat) |
baa2f6ce | 67 | { |
1c0b04d1 | 68 | clear_bit(feat, header->adds_features); |
baa2f6ce ACM |
69 | } |
70 | ||
1c0b04d1 | 71 | bool perf_header__has_feat(const struct perf_header *header, int feat) |
8d06367f | 72 | { |
1c0b04d1 | 73 | return test_bit(feat, header->adds_features); |
8d06367f ACM |
74 | } |
75 | ||
3726cc75 | 76 | static int do_write(int fd, const void *buf, size_t size) |
7c6a1c65 PZ |
77 | { |
78 | while (size) { | |
79 | int ret = write(fd, buf, size); | |
80 | ||
81 | if (ret < 0) | |
d5eed904 | 82 | return -errno; |
7c6a1c65 PZ |
83 | |
84 | size -= ret; | |
85 | buf += ret; | |
86 | } | |
3726cc75 ACM |
87 | |
88 | return 0; | |
7c6a1c65 PZ |
89 | } |
90 | ||
e195fac8 | 91 | int write_padded(int fd, const void *bf, size_t count, size_t count_aligned) |
f92cb24c ACM |
92 | { |
93 | static const char zero_buf[NAME_ALIGN]; | |
94 | int err = do_write(fd, bf, count); | |
95 | ||
96 | if (!err) | |
97 | err = do_write(fd, zero_buf, count_aligned - count); | |
98 | ||
99 | return err; | |
100 | } | |
101 | ||
2bb00d2f KL |
102 | #define string_size(str) \ |
103 | (PERF_ALIGN((strlen(str) + 1), NAME_ALIGN) + sizeof(u32)) | |
104 | ||
fbe96f29 SE |
105 | static int do_write_string(int fd, const char *str) |
106 | { | |
107 | u32 len, olen; | |
108 | int ret; | |
109 | ||
110 | olen = strlen(str) + 1; | |
9ac3e487 | 111 | len = PERF_ALIGN(olen, NAME_ALIGN); |
fbe96f29 SE |
112 | |
113 | /* write len, incl. \0 */ | |
114 | ret = do_write(fd, &len, sizeof(len)); | |
115 | if (ret < 0) | |
116 | return ret; | |
117 | ||
118 | return write_padded(fd, str, olen, len); | |
119 | } | |
120 | ||
121 | static char *do_read_string(int fd, struct perf_header *ph) | |
122 | { | |
123 | ssize_t sz, ret; | |
124 | u32 len; | |
125 | char *buf; | |
126 | ||
5323f60c | 127 | sz = readn(fd, &len, sizeof(len)); |
fbe96f29 SE |
128 | if (sz < (ssize_t)sizeof(len)) |
129 | return NULL; | |
130 | ||
131 | if (ph->needs_swap) | |
132 | len = bswap_32(len); | |
133 | ||
134 | buf = malloc(len); | |
135 | if (!buf) | |
136 | return NULL; | |
137 | ||
5323f60c | 138 | ret = readn(fd, buf, len); |
fbe96f29 SE |
139 | if (ret == (ssize_t)len) { |
140 | /* | |
141 | * strings are padded by zeroes | |
142 | * thus the actual strlen of buf | |
143 | * may be less than len | |
144 | */ | |
145 | return buf; | |
146 | } | |
147 | ||
148 | free(buf); | |
149 | return NULL; | |
150 | } | |
151 | ||
1d037ca1 | 152 | static int write_tracing_data(int fd, struct perf_header *h __maybe_unused, |
fbe96f29 SE |
153 | struct perf_evlist *evlist) |
154 | { | |
155 | return read_tracing_data(fd, &evlist->entries); | |
156 | } | |
157 | ||
158 | ||
159 | static int write_build_id(int fd, struct perf_header *h, | |
1d037ca1 | 160 | struct perf_evlist *evlist __maybe_unused) |
fbe96f29 SE |
161 | { |
162 | struct perf_session *session; | |
163 | int err; | |
164 | ||
165 | session = container_of(h, struct perf_session, header); | |
166 | ||
e20960c0 RR |
167 | if (!perf_session__read_build_ids(session, true)) |
168 | return -1; | |
169 | ||
714c9c4a | 170 | err = perf_session__write_buildid_table(session, fd); |
fbe96f29 SE |
171 | if (err < 0) { |
172 | pr_debug("failed to write buildid table\n"); | |
173 | return err; | |
174 | } | |
73c5d224 | 175 | perf_session__cache_build_ids(session); |
fbe96f29 SE |
176 | |
177 | return 0; | |
178 | } | |
179 | ||
1d037ca1 IT |
180 | static int write_hostname(int fd, struct perf_header *h __maybe_unused, |
181 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
182 | { |
183 | struct utsname uts; | |
184 | int ret; | |
185 | ||
186 | ret = uname(&uts); | |
187 | if (ret < 0) | |
188 | return -1; | |
189 | ||
190 | return do_write_string(fd, uts.nodename); | |
191 | } | |
192 | ||
1d037ca1 IT |
193 | static int write_osrelease(int fd, struct perf_header *h __maybe_unused, |
194 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
195 | { |
196 | struct utsname uts; | |
197 | int ret; | |
198 | ||
199 | ret = uname(&uts); | |
200 | if (ret < 0) | |
201 | return -1; | |
202 | ||
203 | return do_write_string(fd, uts.release); | |
204 | } | |
205 | ||
1d037ca1 IT |
206 | static int write_arch(int fd, struct perf_header *h __maybe_unused, |
207 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
208 | { |
209 | struct utsname uts; | |
210 | int ret; | |
211 | ||
212 | ret = uname(&uts); | |
213 | if (ret < 0) | |
214 | return -1; | |
215 | ||
216 | return do_write_string(fd, uts.machine); | |
217 | } | |
218 | ||
1d037ca1 IT |
219 | static int write_version(int fd, struct perf_header *h __maybe_unused, |
220 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
221 | { |
222 | return do_write_string(fd, perf_version_string); | |
223 | } | |
224 | ||
493c3031 | 225 | static int __write_cpudesc(int fd, const char *cpuinfo_proc) |
fbe96f29 | 226 | { |
fbe96f29 SE |
227 | FILE *file; |
228 | char *buf = NULL; | |
229 | char *s, *p; | |
493c3031 | 230 | const char *search = cpuinfo_proc; |
fbe96f29 SE |
231 | size_t len = 0; |
232 | int ret = -1; | |
233 | ||
234 | if (!search) | |
235 | return -1; | |
236 | ||
237 | file = fopen("/proc/cpuinfo", "r"); | |
238 | if (!file) | |
239 | return -1; | |
240 | ||
241 | while (getline(&buf, &len, file) > 0) { | |
242 | ret = strncmp(buf, search, strlen(search)); | |
243 | if (!ret) | |
244 | break; | |
245 | } | |
246 | ||
ed307758 WN |
247 | if (ret) { |
248 | ret = -1; | |
fbe96f29 | 249 | goto done; |
ed307758 | 250 | } |
fbe96f29 SE |
251 | |
252 | s = buf; | |
253 | ||
254 | p = strchr(buf, ':'); | |
255 | if (p && *(p+1) == ' ' && *(p+2)) | |
256 | s = p + 2; | |
257 | p = strchr(s, '\n'); | |
258 | if (p) | |
259 | *p = '\0'; | |
260 | ||
261 | /* squash extra space characters (branding string) */ | |
262 | p = s; | |
263 | while (*p) { | |
264 | if (isspace(*p)) { | |
265 | char *r = p + 1; | |
266 | char *q = r; | |
267 | *p = ' '; | |
268 | while (*q && isspace(*q)) | |
269 | q++; | |
270 | if (q != (p+1)) | |
271 | while ((*r++ = *q++)); | |
272 | } | |
273 | p++; | |
274 | } | |
275 | ret = do_write_string(fd, s); | |
276 | done: | |
277 | free(buf); | |
278 | fclose(file); | |
279 | return ret; | |
280 | } | |
281 | ||
493c3031 WN |
282 | static int write_cpudesc(int fd, struct perf_header *h __maybe_unused, |
283 | struct perf_evlist *evlist __maybe_unused) | |
284 | { | |
285 | #ifndef CPUINFO_PROC | |
286 | #define CPUINFO_PROC {"model name", } | |
287 | #endif | |
288 | const char *cpuinfo_procs[] = CPUINFO_PROC; | |
289 | unsigned int i; | |
290 | ||
291 | for (i = 0; i < ARRAY_SIZE(cpuinfo_procs); i++) { | |
292 | int ret; | |
293 | ret = __write_cpudesc(fd, cpuinfo_procs[i]); | |
294 | if (ret >= 0) | |
295 | return ret; | |
296 | } | |
297 | return -1; | |
298 | } | |
299 | ||
300 | ||
1d037ca1 IT |
301 | static int write_nrcpus(int fd, struct perf_header *h __maybe_unused, |
302 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
303 | { |
304 | long nr; | |
305 | u32 nrc, nra; | |
306 | int ret; | |
307 | ||
da8a58b5 | 308 | nrc = cpu__max_present_cpu(); |
fbe96f29 SE |
309 | |
310 | nr = sysconf(_SC_NPROCESSORS_ONLN); | |
311 | if (nr < 0) | |
312 | return -1; | |
313 | ||
314 | nra = (u32)(nr & UINT_MAX); | |
315 | ||
316 | ret = do_write(fd, &nrc, sizeof(nrc)); | |
317 | if (ret < 0) | |
318 | return ret; | |
319 | ||
320 | return do_write(fd, &nra, sizeof(nra)); | |
321 | } | |
322 | ||
1d037ca1 | 323 | static int write_event_desc(int fd, struct perf_header *h __maybe_unused, |
fbe96f29 SE |
324 | struct perf_evlist *evlist) |
325 | { | |
6606f873 | 326 | struct perf_evsel *evsel; |
74ba9e11 | 327 | u32 nre, nri, sz; |
fbe96f29 SE |
328 | int ret; |
329 | ||
74ba9e11 | 330 | nre = evlist->nr_entries; |
fbe96f29 SE |
331 | |
332 | /* | |
333 | * write number of events | |
334 | */ | |
335 | ret = do_write(fd, &nre, sizeof(nre)); | |
336 | if (ret < 0) | |
337 | return ret; | |
338 | ||
339 | /* | |
340 | * size of perf_event_attr struct | |
341 | */ | |
6606f873 | 342 | sz = (u32)sizeof(evsel->attr); |
fbe96f29 SE |
343 | ret = do_write(fd, &sz, sizeof(sz)); |
344 | if (ret < 0) | |
345 | return ret; | |
346 | ||
e5cadb93 | 347 | evlist__for_each_entry(evlist, evsel) { |
6606f873 | 348 | ret = do_write(fd, &evsel->attr, sz); |
fbe96f29 SE |
349 | if (ret < 0) |
350 | return ret; | |
351 | /* | |
352 | * write number of unique id per event | |
353 | * there is one id per instance of an event | |
354 | * | |
355 | * copy into an nri to be independent of the | |
356 | * type of ids, | |
357 | */ | |
6606f873 | 358 | nri = evsel->ids; |
fbe96f29 SE |
359 | ret = do_write(fd, &nri, sizeof(nri)); |
360 | if (ret < 0) | |
361 | return ret; | |
362 | ||
363 | /* | |
364 | * write event string as passed on cmdline | |
365 | */ | |
6606f873 | 366 | ret = do_write_string(fd, perf_evsel__name(evsel)); |
fbe96f29 SE |
367 | if (ret < 0) |
368 | return ret; | |
369 | /* | |
370 | * write unique ids for this event | |
371 | */ | |
6606f873 | 372 | ret = do_write(fd, evsel->id, evsel->ids * sizeof(u64)); |
fbe96f29 SE |
373 | if (ret < 0) |
374 | return ret; | |
375 | } | |
376 | return 0; | |
377 | } | |
378 | ||
1d037ca1 IT |
379 | static int write_cmdline(int fd, struct perf_header *h __maybe_unused, |
380 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
381 | { |
382 | char buf[MAXPATHLEN]; | |
b6998692 ACM |
383 | u32 n; |
384 | int i, ret; | |
fbe96f29 | 385 | |
55f77128 TR |
386 | /* actual path to perf binary */ |
387 | ret = readlink("/proc/self/exe", buf, sizeof(buf) - 1); | |
fbe96f29 SE |
388 | if (ret <= 0) |
389 | return -1; | |
390 | ||
391 | /* readlink() does not add null termination */ | |
392 | buf[ret] = '\0'; | |
393 | ||
394 | /* account for binary path */ | |
b6998692 | 395 | n = perf_env.nr_cmdline + 1; |
fbe96f29 SE |
396 | |
397 | ret = do_write(fd, &n, sizeof(n)); | |
398 | if (ret < 0) | |
399 | return ret; | |
400 | ||
401 | ret = do_write_string(fd, buf); | |
402 | if (ret < 0) | |
403 | return ret; | |
404 | ||
b6998692 ACM |
405 | for (i = 0 ; i < perf_env.nr_cmdline; i++) { |
406 | ret = do_write_string(fd, perf_env.cmdline_argv[i]); | |
fbe96f29 SE |
407 | if (ret < 0) |
408 | return ret; | |
409 | } | |
410 | return 0; | |
411 | } | |
412 | ||
413 | #define CORE_SIB_FMT \ | |
414 | "/sys/devices/system/cpu/cpu%d/topology/core_siblings_list" | |
415 | #define THRD_SIB_FMT \ | |
416 | "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list" | |
417 | ||
418 | struct cpu_topo { | |
2bb00d2f | 419 | u32 cpu_nr; |
fbe96f29 SE |
420 | u32 core_sib; |
421 | u32 thread_sib; | |
422 | char **core_siblings; | |
423 | char **thread_siblings; | |
424 | }; | |
425 | ||
426 | static int build_cpu_topo(struct cpu_topo *tp, int cpu) | |
427 | { | |
428 | FILE *fp; | |
429 | char filename[MAXPATHLEN]; | |
430 | char *buf = NULL, *p; | |
431 | size_t len = 0; | |
c5885749 | 432 | ssize_t sret; |
fbe96f29 SE |
433 | u32 i = 0; |
434 | int ret = -1; | |
435 | ||
436 | sprintf(filename, CORE_SIB_FMT, cpu); | |
437 | fp = fopen(filename, "r"); | |
438 | if (!fp) | |
c5885749 | 439 | goto try_threads; |
fbe96f29 | 440 | |
c5885749 | 441 | sret = getline(&buf, &len, fp); |
fbe96f29 | 442 | fclose(fp); |
c5885749 SE |
443 | if (sret <= 0) |
444 | goto try_threads; | |
fbe96f29 SE |
445 | |
446 | p = strchr(buf, '\n'); | |
447 | if (p) | |
448 | *p = '\0'; | |
449 | ||
450 | for (i = 0; i < tp->core_sib; i++) { | |
451 | if (!strcmp(buf, tp->core_siblings[i])) | |
452 | break; | |
453 | } | |
454 | if (i == tp->core_sib) { | |
455 | tp->core_siblings[i] = buf; | |
456 | tp->core_sib++; | |
457 | buf = NULL; | |
458 | len = 0; | |
459 | } | |
c5885749 | 460 | ret = 0; |
fbe96f29 | 461 | |
c5885749 | 462 | try_threads: |
fbe96f29 SE |
463 | sprintf(filename, THRD_SIB_FMT, cpu); |
464 | fp = fopen(filename, "r"); | |
465 | if (!fp) | |
466 | goto done; | |
467 | ||
468 | if (getline(&buf, &len, fp) <= 0) | |
469 | goto done; | |
470 | ||
471 | p = strchr(buf, '\n'); | |
472 | if (p) | |
473 | *p = '\0'; | |
474 | ||
475 | for (i = 0; i < tp->thread_sib; i++) { | |
476 | if (!strcmp(buf, tp->thread_siblings[i])) | |
477 | break; | |
478 | } | |
479 | if (i == tp->thread_sib) { | |
480 | tp->thread_siblings[i] = buf; | |
481 | tp->thread_sib++; | |
482 | buf = NULL; | |
483 | } | |
484 | ret = 0; | |
485 | done: | |
486 | if(fp) | |
487 | fclose(fp); | |
488 | free(buf); | |
489 | return ret; | |
490 | } | |
491 | ||
492 | static void free_cpu_topo(struct cpu_topo *tp) | |
493 | { | |
494 | u32 i; | |
495 | ||
496 | if (!tp) | |
497 | return; | |
498 | ||
499 | for (i = 0 ; i < tp->core_sib; i++) | |
74cf249d | 500 | zfree(&tp->core_siblings[i]); |
fbe96f29 SE |
501 | |
502 | for (i = 0 ; i < tp->thread_sib; i++) | |
74cf249d | 503 | zfree(&tp->thread_siblings[i]); |
fbe96f29 SE |
504 | |
505 | free(tp); | |
506 | } | |
507 | ||
508 | static struct cpu_topo *build_cpu_topology(void) | |
509 | { | |
43db2843 | 510 | struct cpu_topo *tp = NULL; |
fbe96f29 SE |
511 | void *addr; |
512 | u32 nr, i; | |
aa36ddd7 | 513 | size_t sz; |
fbe96f29 SE |
514 | long ncpus; |
515 | int ret = -1; | |
43db2843 | 516 | struct cpu_map *map; |
fbe96f29 | 517 | |
da8a58b5 | 518 | ncpus = cpu__max_present_cpu(); |
fbe96f29 | 519 | |
43db2843 JS |
520 | /* build online CPU map */ |
521 | map = cpu_map__new(NULL); | |
522 | if (map == NULL) { | |
523 | pr_debug("failed to get system cpumap\n"); | |
524 | return NULL; | |
525 | } | |
526 | ||
fbe96f29 SE |
527 | nr = (u32)(ncpus & UINT_MAX); |
528 | ||
529 | sz = nr * sizeof(char *); | |
aa36ddd7 | 530 | addr = calloc(1, sizeof(*tp) + 2 * sz); |
fbe96f29 | 531 | if (!addr) |
43db2843 | 532 | goto out_free; |
fbe96f29 SE |
533 | |
534 | tp = addr; | |
2bb00d2f | 535 | tp->cpu_nr = nr; |
fbe96f29 SE |
536 | addr += sizeof(*tp); |
537 | tp->core_siblings = addr; | |
538 | addr += sz; | |
539 | tp->thread_siblings = addr; | |
540 | ||
541 | for (i = 0; i < nr; i++) { | |
43db2843 JS |
542 | if (!cpu_map__has(map, i)) |
543 | continue; | |
544 | ||
fbe96f29 SE |
545 | ret = build_cpu_topo(tp, i); |
546 | if (ret < 0) | |
547 | break; | |
548 | } | |
43db2843 JS |
549 | |
550 | out_free: | |
551 | cpu_map__put(map); | |
fbe96f29 SE |
552 | if (ret) { |
553 | free_cpu_topo(tp); | |
554 | tp = NULL; | |
555 | } | |
556 | return tp; | |
557 | } | |
558 | ||
1d037ca1 IT |
559 | static int write_cpu_topology(int fd, struct perf_header *h __maybe_unused, |
560 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
561 | { |
562 | struct cpu_topo *tp; | |
563 | u32 i; | |
aa36ddd7 | 564 | int ret, j; |
fbe96f29 SE |
565 | |
566 | tp = build_cpu_topology(); | |
567 | if (!tp) | |
568 | return -1; | |
569 | ||
570 | ret = do_write(fd, &tp->core_sib, sizeof(tp->core_sib)); | |
571 | if (ret < 0) | |
572 | goto done; | |
573 | ||
574 | for (i = 0; i < tp->core_sib; i++) { | |
575 | ret = do_write_string(fd, tp->core_siblings[i]); | |
576 | if (ret < 0) | |
577 | goto done; | |
578 | } | |
579 | ret = do_write(fd, &tp->thread_sib, sizeof(tp->thread_sib)); | |
580 | if (ret < 0) | |
581 | goto done; | |
582 | ||
583 | for (i = 0; i < tp->thread_sib; i++) { | |
584 | ret = do_write_string(fd, tp->thread_siblings[i]); | |
585 | if (ret < 0) | |
586 | break; | |
587 | } | |
2bb00d2f | 588 | |
aa36ddd7 ACM |
589 | ret = perf_env__read_cpu_topology_map(&perf_env); |
590 | if (ret < 0) | |
591 | goto done; | |
592 | ||
593 | for (j = 0; j < perf_env.nr_cpus_avail; j++) { | |
594 | ret = do_write(fd, &perf_env.cpu[j].core_id, | |
595 | sizeof(perf_env.cpu[j].core_id)); | |
2bb00d2f KL |
596 | if (ret < 0) |
597 | return ret; | |
aa36ddd7 ACM |
598 | ret = do_write(fd, &perf_env.cpu[j].socket_id, |
599 | sizeof(perf_env.cpu[j].socket_id)); | |
2bb00d2f KL |
600 | if (ret < 0) |
601 | return ret; | |
602 | } | |
fbe96f29 SE |
603 | done: |
604 | free_cpu_topo(tp); | |
605 | return ret; | |
606 | } | |
607 | ||
608 | ||
609 | ||
1d037ca1 IT |
610 | static int write_total_mem(int fd, struct perf_header *h __maybe_unused, |
611 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
612 | { |
613 | char *buf = NULL; | |
614 | FILE *fp; | |
615 | size_t len = 0; | |
616 | int ret = -1, n; | |
617 | uint64_t mem; | |
618 | ||
619 | fp = fopen("/proc/meminfo", "r"); | |
620 | if (!fp) | |
621 | return -1; | |
622 | ||
623 | while (getline(&buf, &len, fp) > 0) { | |
624 | ret = strncmp(buf, "MemTotal:", 9); | |
625 | if (!ret) | |
626 | break; | |
627 | } | |
628 | if (!ret) { | |
629 | n = sscanf(buf, "%*s %"PRIu64, &mem); | |
630 | if (n == 1) | |
631 | ret = do_write(fd, &mem, sizeof(mem)); | |
ed307758 WN |
632 | } else |
633 | ret = -1; | |
fbe96f29 SE |
634 | free(buf); |
635 | fclose(fp); | |
636 | return ret; | |
637 | } | |
638 | ||
639 | static int write_topo_node(int fd, int node) | |
640 | { | |
641 | char str[MAXPATHLEN]; | |
642 | char field[32]; | |
643 | char *buf = NULL, *p; | |
644 | size_t len = 0; | |
645 | FILE *fp; | |
646 | u64 mem_total, mem_free, mem; | |
647 | int ret = -1; | |
648 | ||
649 | sprintf(str, "/sys/devices/system/node/node%d/meminfo", node); | |
650 | fp = fopen(str, "r"); | |
651 | if (!fp) | |
652 | return -1; | |
653 | ||
654 | while (getline(&buf, &len, fp) > 0) { | |
655 | /* skip over invalid lines */ | |
656 | if (!strchr(buf, ':')) | |
657 | continue; | |
a761a2d8 | 658 | if (sscanf(buf, "%*s %*d %31s %"PRIu64, field, &mem) != 2) |
fbe96f29 SE |
659 | goto done; |
660 | if (!strcmp(field, "MemTotal:")) | |
661 | mem_total = mem; | |
662 | if (!strcmp(field, "MemFree:")) | |
663 | mem_free = mem; | |
664 | } | |
665 | ||
666 | fclose(fp); | |
5809fde0 | 667 | fp = NULL; |
fbe96f29 SE |
668 | |
669 | ret = do_write(fd, &mem_total, sizeof(u64)); | |
670 | if (ret) | |
671 | goto done; | |
672 | ||
673 | ret = do_write(fd, &mem_free, sizeof(u64)); | |
674 | if (ret) | |
675 | goto done; | |
676 | ||
677 | ret = -1; | |
678 | sprintf(str, "/sys/devices/system/node/node%d/cpulist", node); | |
679 | ||
680 | fp = fopen(str, "r"); | |
681 | if (!fp) | |
682 | goto done; | |
683 | ||
684 | if (getline(&buf, &len, fp) <= 0) | |
685 | goto done; | |
686 | ||
687 | p = strchr(buf, '\n'); | |
688 | if (p) | |
689 | *p = '\0'; | |
690 | ||
691 | ret = do_write_string(fd, buf); | |
692 | done: | |
693 | free(buf); | |
5809fde0 TJ |
694 | if (fp) |
695 | fclose(fp); | |
fbe96f29 SE |
696 | return ret; |
697 | } | |
698 | ||
1d037ca1 IT |
699 | static int write_numa_topology(int fd, struct perf_header *h __maybe_unused, |
700 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
701 | { |
702 | char *buf = NULL; | |
703 | size_t len = 0; | |
704 | FILE *fp; | |
705 | struct cpu_map *node_map = NULL; | |
706 | char *c; | |
707 | u32 nr, i, j; | |
708 | int ret = -1; | |
709 | ||
710 | fp = fopen("/sys/devices/system/node/online", "r"); | |
711 | if (!fp) | |
712 | return -1; | |
713 | ||
714 | if (getline(&buf, &len, fp) <= 0) | |
715 | goto done; | |
716 | ||
717 | c = strchr(buf, '\n'); | |
718 | if (c) | |
719 | *c = '\0'; | |
720 | ||
721 | node_map = cpu_map__new(buf); | |
722 | if (!node_map) | |
723 | goto done; | |
724 | ||
725 | nr = (u32)node_map->nr; | |
726 | ||
727 | ret = do_write(fd, &nr, sizeof(nr)); | |
728 | if (ret < 0) | |
729 | goto done; | |
730 | ||
731 | for (i = 0; i < nr; i++) { | |
732 | j = (u32)node_map->map[i]; | |
733 | ret = do_write(fd, &j, sizeof(j)); | |
734 | if (ret < 0) | |
735 | break; | |
736 | ||
737 | ret = write_topo_node(fd, i); | |
738 | if (ret < 0) | |
739 | break; | |
740 | } | |
741 | done: | |
742 | free(buf); | |
743 | fclose(fp); | |
5191d887 | 744 | cpu_map__put(node_map); |
fbe96f29 SE |
745 | return ret; |
746 | } | |
747 | ||
50a9667c RR |
748 | /* |
749 | * File format: | |
750 | * | |
751 | * struct pmu_mappings { | |
752 | * u32 pmu_num; | |
753 | * struct pmu_map { | |
754 | * u32 type; | |
755 | * char name[]; | |
756 | * }[pmu_num]; | |
757 | * }; | |
758 | */ | |
759 | ||
1d037ca1 IT |
760 | static int write_pmu_mappings(int fd, struct perf_header *h __maybe_unused, |
761 | struct perf_evlist *evlist __maybe_unused) | |
50a9667c RR |
762 | { |
763 | struct perf_pmu *pmu = NULL; | |
764 | off_t offset = lseek(fd, 0, SEEK_CUR); | |
765 | __u32 pmu_num = 0; | |
5323f60c | 766 | int ret; |
50a9667c RR |
767 | |
768 | /* write real pmu_num later */ | |
5323f60c NK |
769 | ret = do_write(fd, &pmu_num, sizeof(pmu_num)); |
770 | if (ret < 0) | |
771 | return ret; | |
50a9667c RR |
772 | |
773 | while ((pmu = perf_pmu__scan(pmu))) { | |
774 | if (!pmu->name) | |
775 | continue; | |
776 | pmu_num++; | |
5323f60c NK |
777 | |
778 | ret = do_write(fd, &pmu->type, sizeof(pmu->type)); | |
779 | if (ret < 0) | |
780 | return ret; | |
781 | ||
782 | ret = do_write_string(fd, pmu->name); | |
783 | if (ret < 0) | |
784 | return ret; | |
50a9667c RR |
785 | } |
786 | ||
787 | if (pwrite(fd, &pmu_num, sizeof(pmu_num), offset) != sizeof(pmu_num)) { | |
788 | /* discard all */ | |
789 | lseek(fd, offset, SEEK_SET); | |
790 | return -1; | |
791 | } | |
792 | ||
793 | return 0; | |
794 | } | |
795 | ||
a8bb559b NK |
796 | /* |
797 | * File format: | |
798 | * | |
799 | * struct group_descs { | |
800 | * u32 nr_groups; | |
801 | * struct group_desc { | |
802 | * char name[]; | |
803 | * u32 leader_idx; | |
804 | * u32 nr_members; | |
805 | * }[nr_groups]; | |
806 | * }; | |
807 | */ | |
808 | static int write_group_desc(int fd, struct perf_header *h __maybe_unused, | |
809 | struct perf_evlist *evlist) | |
810 | { | |
811 | u32 nr_groups = evlist->nr_groups; | |
812 | struct perf_evsel *evsel; | |
813 | int ret; | |
814 | ||
815 | ret = do_write(fd, &nr_groups, sizeof(nr_groups)); | |
816 | if (ret < 0) | |
817 | return ret; | |
818 | ||
e5cadb93 | 819 | evlist__for_each_entry(evlist, evsel) { |
a8bb559b NK |
820 | if (perf_evsel__is_group_leader(evsel) && |
821 | evsel->nr_members > 1) { | |
822 | const char *name = evsel->group_name ?: "{anon_group}"; | |
823 | u32 leader_idx = evsel->idx; | |
824 | u32 nr_members = evsel->nr_members; | |
825 | ||
826 | ret = do_write_string(fd, name); | |
827 | if (ret < 0) | |
828 | return ret; | |
829 | ||
830 | ret = do_write(fd, &leader_idx, sizeof(leader_idx)); | |
831 | if (ret < 0) | |
832 | return ret; | |
833 | ||
834 | ret = do_write(fd, &nr_members, sizeof(nr_members)); | |
835 | if (ret < 0) | |
836 | return ret; | |
837 | } | |
838 | } | |
839 | return 0; | |
840 | } | |
841 | ||
fbe96f29 SE |
842 | /* |
843 | * default get_cpuid(): nothing gets recorded | |
7a759cd8 | 844 | * actual implementation must be in arch/$(SRCARCH)/util/header.c |
fbe96f29 | 845 | */ |
11d8f870 | 846 | int __weak get_cpuid(char *buffer __maybe_unused, size_t sz __maybe_unused) |
fbe96f29 SE |
847 | { |
848 | return -1; | |
849 | } | |
850 | ||
1d037ca1 IT |
851 | static int write_cpuid(int fd, struct perf_header *h __maybe_unused, |
852 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
853 | { |
854 | char buffer[64]; | |
855 | int ret; | |
856 | ||
857 | ret = get_cpuid(buffer, sizeof(buffer)); | |
858 | if (!ret) | |
859 | goto write_it; | |
860 | ||
861 | return -1; | |
862 | write_it: | |
863 | return do_write_string(fd, buffer); | |
864 | } | |
865 | ||
1d037ca1 IT |
866 | static int write_branch_stack(int fd __maybe_unused, |
867 | struct perf_header *h __maybe_unused, | |
868 | struct perf_evlist *evlist __maybe_unused) | |
330aa675 SE |
869 | { |
870 | return 0; | |
871 | } | |
872 | ||
99fa2984 | 873 | static int write_auxtrace(int fd, struct perf_header *h, |
4025ea40 AH |
874 | struct perf_evlist *evlist __maybe_unused) |
875 | { | |
99fa2984 AH |
876 | struct perf_session *session; |
877 | int err; | |
878 | ||
879 | session = container_of(h, struct perf_session, header); | |
880 | ||
881 | err = auxtrace_index__write(fd, &session->auxtrace_index); | |
882 | if (err < 0) | |
883 | pr_err("Failed to write auxtrace index\n"); | |
884 | return err; | |
4025ea40 AH |
885 | } |
886 | ||
720e98b5 JO |
887 | static int cpu_cache_level__sort(const void *a, const void *b) |
888 | { | |
889 | struct cpu_cache_level *cache_a = (struct cpu_cache_level *)a; | |
890 | struct cpu_cache_level *cache_b = (struct cpu_cache_level *)b; | |
891 | ||
892 | return cache_a->level - cache_b->level; | |
893 | } | |
894 | ||
895 | static bool cpu_cache_level__cmp(struct cpu_cache_level *a, struct cpu_cache_level *b) | |
896 | { | |
897 | if (a->level != b->level) | |
898 | return false; | |
899 | ||
900 | if (a->line_size != b->line_size) | |
901 | return false; | |
902 | ||
903 | if (a->sets != b->sets) | |
904 | return false; | |
905 | ||
906 | if (a->ways != b->ways) | |
907 | return false; | |
908 | ||
909 | if (strcmp(a->type, b->type)) | |
910 | return false; | |
911 | ||
912 | if (strcmp(a->size, b->size)) | |
913 | return false; | |
914 | ||
915 | if (strcmp(a->map, b->map)) | |
916 | return false; | |
917 | ||
918 | return true; | |
919 | } | |
920 | ||
921 | static int cpu_cache_level__read(struct cpu_cache_level *cache, u32 cpu, u16 level) | |
922 | { | |
923 | char path[PATH_MAX], file[PATH_MAX]; | |
924 | struct stat st; | |
925 | size_t len; | |
926 | ||
927 | scnprintf(path, PATH_MAX, "devices/system/cpu/cpu%d/cache/index%d/", cpu, level); | |
928 | scnprintf(file, PATH_MAX, "%s/%s", sysfs__mountpoint(), path); | |
929 | ||
930 | if (stat(file, &st)) | |
931 | return 1; | |
932 | ||
933 | scnprintf(file, PATH_MAX, "%s/level", path); | |
934 | if (sysfs__read_int(file, (int *) &cache->level)) | |
935 | return -1; | |
936 | ||
937 | scnprintf(file, PATH_MAX, "%s/coherency_line_size", path); | |
938 | if (sysfs__read_int(file, (int *) &cache->line_size)) | |
939 | return -1; | |
940 | ||
941 | scnprintf(file, PATH_MAX, "%s/number_of_sets", path); | |
942 | if (sysfs__read_int(file, (int *) &cache->sets)) | |
943 | return -1; | |
944 | ||
945 | scnprintf(file, PATH_MAX, "%s/ways_of_associativity", path); | |
946 | if (sysfs__read_int(file, (int *) &cache->ways)) | |
947 | return -1; | |
948 | ||
949 | scnprintf(file, PATH_MAX, "%s/type", path); | |
950 | if (sysfs__read_str(file, &cache->type, &len)) | |
951 | return -1; | |
952 | ||
953 | cache->type[len] = 0; | |
954 | cache->type = rtrim(cache->type); | |
955 | ||
956 | scnprintf(file, PATH_MAX, "%s/size", path); | |
957 | if (sysfs__read_str(file, &cache->size, &len)) { | |
958 | free(cache->type); | |
959 | return -1; | |
960 | } | |
961 | ||
962 | cache->size[len] = 0; | |
963 | cache->size = rtrim(cache->size); | |
964 | ||
965 | scnprintf(file, PATH_MAX, "%s/shared_cpu_list", path); | |
966 | if (sysfs__read_str(file, &cache->map, &len)) { | |
967 | free(cache->map); | |
968 | free(cache->type); | |
969 | return -1; | |
970 | } | |
971 | ||
972 | cache->map[len] = 0; | |
973 | cache->map = rtrim(cache->map); | |
974 | return 0; | |
975 | } | |
976 | ||
977 | static void cpu_cache_level__fprintf(FILE *out, struct cpu_cache_level *c) | |
978 | { | |
979 | fprintf(out, "L%d %-15s %8s [%s]\n", c->level, c->type, c->size, c->map); | |
980 | } | |
981 | ||
982 | static int build_caches(struct cpu_cache_level caches[], u32 size, u32 *cntp) | |
983 | { | |
984 | u32 i, cnt = 0; | |
985 | long ncpus; | |
986 | u32 nr, cpu; | |
987 | u16 level; | |
988 | ||
989 | ncpus = sysconf(_SC_NPROCESSORS_CONF); | |
990 | if (ncpus < 0) | |
991 | return -1; | |
992 | ||
993 | nr = (u32)(ncpus & UINT_MAX); | |
994 | ||
995 | for (cpu = 0; cpu < nr; cpu++) { | |
996 | for (level = 0; level < 10; level++) { | |
997 | struct cpu_cache_level c; | |
998 | int err; | |
999 | ||
1000 | err = cpu_cache_level__read(&c, cpu, level); | |
1001 | if (err < 0) | |
1002 | return err; | |
1003 | ||
1004 | if (err == 1) | |
1005 | break; | |
1006 | ||
1007 | for (i = 0; i < cnt; i++) { | |
1008 | if (cpu_cache_level__cmp(&c, &caches[i])) | |
1009 | break; | |
1010 | } | |
1011 | ||
1012 | if (i == cnt) | |
1013 | caches[cnt++] = c; | |
1014 | else | |
1015 | cpu_cache_level__free(&c); | |
1016 | ||
1017 | if (WARN_ONCE(cnt == size, "way too many cpu caches..")) | |
1018 | goto out; | |
1019 | } | |
1020 | } | |
1021 | out: | |
1022 | *cntp = cnt; | |
1023 | return 0; | |
1024 | } | |
1025 | ||
1026 | #define MAX_CACHES 2000 | |
1027 | ||
1028 | static int write_cache(int fd, struct perf_header *h __maybe_unused, | |
1029 | struct perf_evlist *evlist __maybe_unused) | |
1030 | { | |
1031 | struct cpu_cache_level caches[MAX_CACHES]; | |
1032 | u32 cnt = 0, i, version = 1; | |
1033 | int ret; | |
1034 | ||
1035 | ret = build_caches(caches, MAX_CACHES, &cnt); | |
1036 | if (ret) | |
1037 | goto out; | |
1038 | ||
1039 | qsort(&caches, cnt, sizeof(struct cpu_cache_level), cpu_cache_level__sort); | |
1040 | ||
1041 | ret = do_write(fd, &version, sizeof(u32)); | |
1042 | if (ret < 0) | |
1043 | goto out; | |
1044 | ||
1045 | ret = do_write(fd, &cnt, sizeof(u32)); | |
1046 | if (ret < 0) | |
1047 | goto out; | |
1048 | ||
1049 | for (i = 0; i < cnt; i++) { | |
1050 | struct cpu_cache_level *c = &caches[i]; | |
1051 | ||
1052 | #define _W(v) \ | |
1053 | ret = do_write(fd, &c->v, sizeof(u32)); \ | |
1054 | if (ret < 0) \ | |
1055 | goto out; | |
1056 | ||
1057 | _W(level) | |
1058 | _W(line_size) | |
1059 | _W(sets) | |
1060 | _W(ways) | |
1061 | #undef _W | |
1062 | ||
1063 | #define _W(v) \ | |
1064 | ret = do_write_string(fd, (const char *) c->v); \ | |
1065 | if (ret < 0) \ | |
1066 | goto out; | |
1067 | ||
1068 | _W(type) | |
1069 | _W(size) | |
1070 | _W(map) | |
1071 | #undef _W | |
1072 | } | |
1073 | ||
1074 | out: | |
1075 | for (i = 0; i < cnt; i++) | |
1076 | cpu_cache_level__free(&caches[i]); | |
1077 | return ret; | |
1078 | } | |
1079 | ||
ffa517ad JO |
1080 | static int write_stat(int fd __maybe_unused, |
1081 | struct perf_header *h __maybe_unused, | |
1082 | struct perf_evlist *evlist __maybe_unused) | |
1083 | { | |
1084 | return 0; | |
1085 | } | |
1086 | ||
7e94cfcc NK |
1087 | static void print_hostname(struct perf_header *ph, int fd __maybe_unused, |
1088 | FILE *fp) | |
fbe96f29 | 1089 | { |
7e94cfcc | 1090 | fprintf(fp, "# hostname : %s\n", ph->env.hostname); |
fbe96f29 SE |
1091 | } |
1092 | ||
7e94cfcc NK |
1093 | static void print_osrelease(struct perf_header *ph, int fd __maybe_unused, |
1094 | FILE *fp) | |
fbe96f29 | 1095 | { |
7e94cfcc | 1096 | fprintf(fp, "# os release : %s\n", ph->env.os_release); |
fbe96f29 SE |
1097 | } |
1098 | ||
7e94cfcc | 1099 | static void print_arch(struct perf_header *ph, int fd __maybe_unused, FILE *fp) |
fbe96f29 | 1100 | { |
7e94cfcc | 1101 | fprintf(fp, "# arch : %s\n", ph->env.arch); |
fbe96f29 SE |
1102 | } |
1103 | ||
7e94cfcc NK |
1104 | static void print_cpudesc(struct perf_header *ph, int fd __maybe_unused, |
1105 | FILE *fp) | |
fbe96f29 | 1106 | { |
7e94cfcc | 1107 | fprintf(fp, "# cpudesc : %s\n", ph->env.cpu_desc); |
fbe96f29 SE |
1108 | } |
1109 | ||
7e94cfcc NK |
1110 | static void print_nrcpus(struct perf_header *ph, int fd __maybe_unused, |
1111 | FILE *fp) | |
fbe96f29 | 1112 | { |
7e94cfcc NK |
1113 | fprintf(fp, "# nrcpus online : %u\n", ph->env.nr_cpus_online); |
1114 | fprintf(fp, "# nrcpus avail : %u\n", ph->env.nr_cpus_avail); | |
fbe96f29 SE |
1115 | } |
1116 | ||
7e94cfcc NK |
1117 | static void print_version(struct perf_header *ph, int fd __maybe_unused, |
1118 | FILE *fp) | |
fbe96f29 | 1119 | { |
7e94cfcc | 1120 | fprintf(fp, "# perf version : %s\n", ph->env.version); |
fbe96f29 SE |
1121 | } |
1122 | ||
7e94cfcc NK |
1123 | static void print_cmdline(struct perf_header *ph, int fd __maybe_unused, |
1124 | FILE *fp) | |
fbe96f29 | 1125 | { |
7e94cfcc | 1126 | int nr, i; |
fbe96f29 | 1127 | |
7e94cfcc | 1128 | nr = ph->env.nr_cmdline; |
fbe96f29 SE |
1129 | |
1130 | fprintf(fp, "# cmdline : "); | |
1131 | ||
768dd3f3 JO |
1132 | for (i = 0; i < nr; i++) |
1133 | fprintf(fp, "%s ", ph->env.cmdline_argv[i]); | |
fbe96f29 SE |
1134 | fputc('\n', fp); |
1135 | } | |
1136 | ||
7e94cfcc NK |
1137 | static void print_cpu_topology(struct perf_header *ph, int fd __maybe_unused, |
1138 | FILE *fp) | |
fbe96f29 | 1139 | { |
7e94cfcc | 1140 | int nr, i; |
fbe96f29 | 1141 | char *str; |
da8a58b5 | 1142 | int cpu_nr = ph->env.nr_cpus_avail; |
fbe96f29 | 1143 | |
7e94cfcc NK |
1144 | nr = ph->env.nr_sibling_cores; |
1145 | str = ph->env.sibling_cores; | |
fbe96f29 SE |
1146 | |
1147 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 1148 | fprintf(fp, "# sibling cores : %s\n", str); |
7e94cfcc | 1149 | str += strlen(str) + 1; |
fbe96f29 SE |
1150 | } |
1151 | ||
7e94cfcc NK |
1152 | nr = ph->env.nr_sibling_threads; |
1153 | str = ph->env.sibling_threads; | |
fbe96f29 SE |
1154 | |
1155 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 1156 | fprintf(fp, "# sibling threads : %s\n", str); |
7e94cfcc | 1157 | str += strlen(str) + 1; |
fbe96f29 | 1158 | } |
2bb00d2f KL |
1159 | |
1160 | if (ph->env.cpu != NULL) { | |
1161 | for (i = 0; i < cpu_nr; i++) | |
1162 | fprintf(fp, "# CPU %d: Core ID %d, Socket ID %d\n", i, | |
1163 | ph->env.cpu[i].core_id, ph->env.cpu[i].socket_id); | |
1164 | } else | |
1165 | fprintf(fp, "# Core ID and Socket ID information is not available\n"); | |
fbe96f29 SE |
1166 | } |
1167 | ||
4e1b9c67 | 1168 | static void free_event_desc(struct perf_evsel *events) |
fbe96f29 | 1169 | { |
4e1b9c67 RR |
1170 | struct perf_evsel *evsel; |
1171 | ||
1172 | if (!events) | |
1173 | return; | |
1174 | ||
1175 | for (evsel = events; evsel->attr.size; evsel++) { | |
74cf249d ACM |
1176 | zfree(&evsel->name); |
1177 | zfree(&evsel->id); | |
4e1b9c67 RR |
1178 | } |
1179 | ||
1180 | free(events); | |
1181 | } | |
1182 | ||
1183 | static struct perf_evsel * | |
1184 | read_event_desc(struct perf_header *ph, int fd) | |
1185 | { | |
1186 | struct perf_evsel *evsel, *events = NULL; | |
1187 | u64 *id; | |
fbe96f29 | 1188 | void *buf = NULL; |
62db9068 SE |
1189 | u32 nre, sz, nr, i, j; |
1190 | ssize_t ret; | |
1191 | size_t msz; | |
fbe96f29 SE |
1192 | |
1193 | /* number of events */ | |
5323f60c | 1194 | ret = readn(fd, &nre, sizeof(nre)); |
fbe96f29 SE |
1195 | if (ret != (ssize_t)sizeof(nre)) |
1196 | goto error; | |
1197 | ||
1198 | if (ph->needs_swap) | |
1199 | nre = bswap_32(nre); | |
1200 | ||
5323f60c | 1201 | ret = readn(fd, &sz, sizeof(sz)); |
fbe96f29 SE |
1202 | if (ret != (ssize_t)sizeof(sz)) |
1203 | goto error; | |
1204 | ||
1205 | if (ph->needs_swap) | |
1206 | sz = bswap_32(sz); | |
1207 | ||
62db9068 | 1208 | /* buffer to hold on file attr struct */ |
fbe96f29 SE |
1209 | buf = malloc(sz); |
1210 | if (!buf) | |
1211 | goto error; | |
1212 | ||
4e1b9c67 RR |
1213 | /* the last event terminates with evsel->attr.size == 0: */ |
1214 | events = calloc(nre + 1, sizeof(*events)); | |
1215 | if (!events) | |
1216 | goto error; | |
1217 | ||
1218 | msz = sizeof(evsel->attr); | |
9fafd98f | 1219 | if (sz < msz) |
fbe96f29 SE |
1220 | msz = sz; |
1221 | ||
4e1b9c67 RR |
1222 | for (i = 0, evsel = events; i < nre; evsel++, i++) { |
1223 | evsel->idx = i; | |
fbe96f29 | 1224 | |
62db9068 SE |
1225 | /* |
1226 | * must read entire on-file attr struct to | |
1227 | * sync up with layout. | |
1228 | */ | |
5323f60c | 1229 | ret = readn(fd, buf, sz); |
fbe96f29 SE |
1230 | if (ret != (ssize_t)sz) |
1231 | goto error; | |
1232 | ||
1233 | if (ph->needs_swap) | |
1234 | perf_event__attr_swap(buf); | |
1235 | ||
4e1b9c67 | 1236 | memcpy(&evsel->attr, buf, msz); |
fbe96f29 | 1237 | |
5323f60c | 1238 | ret = readn(fd, &nr, sizeof(nr)); |
fbe96f29 SE |
1239 | if (ret != (ssize_t)sizeof(nr)) |
1240 | goto error; | |
1241 | ||
0807d2d8 | 1242 | if (ph->needs_swap) { |
fbe96f29 | 1243 | nr = bswap_32(nr); |
0807d2d8 ACM |
1244 | evsel->needs_swap = true; |
1245 | } | |
fbe96f29 | 1246 | |
4e1b9c67 RR |
1247 | evsel->name = do_read_string(fd, ph); |
1248 | ||
1249 | if (!nr) | |
1250 | continue; | |
1251 | ||
1252 | id = calloc(nr, sizeof(*id)); | |
1253 | if (!id) | |
1254 | goto error; | |
1255 | evsel->ids = nr; | |
1256 | evsel->id = id; | |
1257 | ||
1258 | for (j = 0 ; j < nr; j++) { | |
5323f60c | 1259 | ret = readn(fd, id, sizeof(*id)); |
4e1b9c67 RR |
1260 | if (ret != (ssize_t)sizeof(*id)) |
1261 | goto error; | |
1262 | if (ph->needs_swap) | |
1263 | *id = bswap_64(*id); | |
1264 | id++; | |
1265 | } | |
1266 | } | |
1267 | out: | |
04662523 | 1268 | free(buf); |
4e1b9c67 RR |
1269 | return events; |
1270 | error: | |
4cc97614 | 1271 | free_event_desc(events); |
4e1b9c67 RR |
1272 | events = NULL; |
1273 | goto out; | |
1274 | } | |
1275 | ||
2c5e8c52 PZ |
1276 | static int __desc_attr__fprintf(FILE *fp, const char *name, const char *val, |
1277 | void *priv __attribute__((unused))) | |
1278 | { | |
1279 | return fprintf(fp, ", %s = %s", name, val); | |
1280 | } | |
1281 | ||
4e1b9c67 RR |
1282 | static void print_event_desc(struct perf_header *ph, int fd, FILE *fp) |
1283 | { | |
1284 | struct perf_evsel *evsel, *events = read_event_desc(ph, fd); | |
1285 | u32 j; | |
1286 | u64 *id; | |
1287 | ||
1288 | if (!events) { | |
1289 | fprintf(fp, "# event desc: not available or unable to read\n"); | |
1290 | return; | |
1291 | } | |
1292 | ||
1293 | for (evsel = events; evsel->attr.size; evsel++) { | |
1294 | fprintf(fp, "# event : name = %s, ", evsel->name); | |
fbe96f29 | 1295 | |
4e1b9c67 | 1296 | if (evsel->ids) { |
fbe96f29 | 1297 | fprintf(fp, ", id = {"); |
4e1b9c67 RR |
1298 | for (j = 0, id = evsel->id; j < evsel->ids; j++, id++) { |
1299 | if (j) | |
1300 | fputc(',', fp); | |
1301 | fprintf(fp, " %"PRIu64, *id); | |
1302 | } | |
fbe96f29 | 1303 | fprintf(fp, " }"); |
4e1b9c67 | 1304 | } |
814c8c38 | 1305 | |
2c5e8c52 | 1306 | perf_event_attr__fprintf(fp, &evsel->attr, __desc_attr__fprintf, NULL); |
4e1b9c67 | 1307 | |
fbe96f29 SE |
1308 | fputc('\n', fp); |
1309 | } | |
4e1b9c67 RR |
1310 | |
1311 | free_event_desc(events); | |
fbe96f29 SE |
1312 | } |
1313 | ||
7e94cfcc | 1314 | static void print_total_mem(struct perf_header *ph, int fd __maybe_unused, |
1d037ca1 | 1315 | FILE *fp) |
fbe96f29 | 1316 | { |
7e94cfcc | 1317 | fprintf(fp, "# total memory : %Lu kB\n", ph->env.total_mem); |
fbe96f29 SE |
1318 | } |
1319 | ||
7e94cfcc | 1320 | static void print_numa_topology(struct perf_header *ph, int fd __maybe_unused, |
1d037ca1 | 1321 | FILE *fp) |
fbe96f29 | 1322 | { |
c60da22a JO |
1323 | int i; |
1324 | struct numa_node *n; | |
fbe96f29 | 1325 | |
c60da22a JO |
1326 | for (i = 0; i < ph->env.nr_numa_nodes; i++) { |
1327 | n = &ph->env.numa_nodes[i]; | |
fbe96f29 | 1328 | |
fbe96f29 SE |
1329 | fprintf(fp, "# node%u meminfo : total = %"PRIu64" kB," |
1330 | " free = %"PRIu64" kB\n", | |
c60da22a | 1331 | n->node, n->mem_total, n->mem_free); |
1234471e | 1332 | |
c60da22a JO |
1333 | fprintf(fp, "# node%u cpu list : ", n->node); |
1334 | cpu_map__fprintf(n->map, fp); | |
fbe96f29 | 1335 | } |
fbe96f29 SE |
1336 | } |
1337 | ||
7e94cfcc | 1338 | static void print_cpuid(struct perf_header *ph, int fd __maybe_unused, FILE *fp) |
fbe96f29 | 1339 | { |
7e94cfcc | 1340 | fprintf(fp, "# cpuid : %s\n", ph->env.cpuid); |
fbe96f29 SE |
1341 | } |
1342 | ||
1d037ca1 | 1343 | static void print_branch_stack(struct perf_header *ph __maybe_unused, |
7e94cfcc | 1344 | int fd __maybe_unused, FILE *fp) |
330aa675 SE |
1345 | { |
1346 | fprintf(fp, "# contains samples with branch stack\n"); | |
1347 | } | |
1348 | ||
4025ea40 AH |
1349 | static void print_auxtrace(struct perf_header *ph __maybe_unused, |
1350 | int fd __maybe_unused, FILE *fp) | |
1351 | { | |
1352 | fprintf(fp, "# contains AUX area data (e.g. instruction trace)\n"); | |
1353 | } | |
1354 | ||
ffa517ad JO |
1355 | static void print_stat(struct perf_header *ph __maybe_unused, |
1356 | int fd __maybe_unused, FILE *fp) | |
1357 | { | |
1358 | fprintf(fp, "# contains stat data\n"); | |
1359 | } | |
1360 | ||
720e98b5 JO |
1361 | static void print_cache(struct perf_header *ph __maybe_unused, |
1362 | int fd __maybe_unused, FILE *fp __maybe_unused) | |
1363 | { | |
1364 | int i; | |
1365 | ||
1366 | fprintf(fp, "# CPU cache info:\n"); | |
1367 | for (i = 0; i < ph->env.caches_cnt; i++) { | |
1368 | fprintf(fp, "# "); | |
1369 | cpu_cache_level__fprintf(fp, &ph->env.caches[i]); | |
1370 | } | |
1371 | } | |
1372 | ||
7e94cfcc NK |
1373 | static void print_pmu_mappings(struct perf_header *ph, int fd __maybe_unused, |
1374 | FILE *fp) | |
50a9667c RR |
1375 | { |
1376 | const char *delimiter = "# pmu mappings: "; | |
7e94cfcc | 1377 | char *str, *tmp; |
50a9667c RR |
1378 | u32 pmu_num; |
1379 | u32 type; | |
1380 | ||
7e94cfcc | 1381 | pmu_num = ph->env.nr_pmu_mappings; |
50a9667c RR |
1382 | if (!pmu_num) { |
1383 | fprintf(fp, "# pmu mappings: not available\n"); | |
1384 | return; | |
1385 | } | |
1386 | ||
7e94cfcc NK |
1387 | str = ph->env.pmu_mappings; |
1388 | ||
50a9667c | 1389 | while (pmu_num) { |
7e94cfcc NK |
1390 | type = strtoul(str, &tmp, 0); |
1391 | if (*tmp != ':') | |
1392 | goto error; | |
1393 | ||
1394 | str = tmp + 1; | |
1395 | fprintf(fp, "%s%s = %" PRIu32, delimiter, str, type); | |
be4a2ded | 1396 | |
50a9667c | 1397 | delimiter = ", "; |
7e94cfcc NK |
1398 | str += strlen(str) + 1; |
1399 | pmu_num--; | |
50a9667c RR |
1400 | } |
1401 | ||
1402 | fprintf(fp, "\n"); | |
1403 | ||
1404 | if (!pmu_num) | |
1405 | return; | |
1406 | error: | |
1407 | fprintf(fp, "# pmu mappings: unable to read\n"); | |
1408 | } | |
1409 | ||
a8bb559b NK |
1410 | static void print_group_desc(struct perf_header *ph, int fd __maybe_unused, |
1411 | FILE *fp) | |
1412 | { | |
1413 | struct perf_session *session; | |
1414 | struct perf_evsel *evsel; | |
1415 | u32 nr = 0; | |
1416 | ||
1417 | session = container_of(ph, struct perf_session, header); | |
1418 | ||
e5cadb93 | 1419 | evlist__for_each_entry(session->evlist, evsel) { |
a8bb559b NK |
1420 | if (perf_evsel__is_group_leader(evsel) && |
1421 | evsel->nr_members > 1) { | |
1422 | fprintf(fp, "# group: %s{%s", evsel->group_name ?: "", | |
1423 | perf_evsel__name(evsel)); | |
1424 | ||
1425 | nr = evsel->nr_members - 1; | |
1426 | } else if (nr) { | |
1427 | fprintf(fp, ",%s", perf_evsel__name(evsel)); | |
1428 | ||
1429 | if (--nr == 0) | |
1430 | fprintf(fp, "}\n"); | |
1431 | } | |
1432 | } | |
1433 | } | |
1434 | ||
08d95bd2 RR |
1435 | static int __event_process_build_id(struct build_id_event *bev, |
1436 | char *filename, | |
1437 | struct perf_session *session) | |
1438 | { | |
1439 | int err = -1; | |
08d95bd2 | 1440 | struct machine *machine; |
1f121b03 | 1441 | u16 cpumode; |
08d95bd2 RR |
1442 | struct dso *dso; |
1443 | enum dso_kernel_type dso_type; | |
1444 | ||
1445 | machine = perf_session__findnew_machine(session, bev->pid); | |
1446 | if (!machine) | |
1447 | goto out; | |
1448 | ||
1f121b03 | 1449 | cpumode = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
08d95bd2 | 1450 | |
1f121b03 | 1451 | switch (cpumode) { |
08d95bd2 RR |
1452 | case PERF_RECORD_MISC_KERNEL: |
1453 | dso_type = DSO_TYPE_KERNEL; | |
08d95bd2 RR |
1454 | break; |
1455 | case PERF_RECORD_MISC_GUEST_KERNEL: | |
1456 | dso_type = DSO_TYPE_GUEST_KERNEL; | |
08d95bd2 RR |
1457 | break; |
1458 | case PERF_RECORD_MISC_USER: | |
1459 | case PERF_RECORD_MISC_GUEST_USER: | |
1460 | dso_type = DSO_TYPE_USER; | |
08d95bd2 RR |
1461 | break; |
1462 | default: | |
1463 | goto out; | |
1464 | } | |
1465 | ||
aa7cc2ae | 1466 | dso = machine__findnew_dso(machine, filename); |
08d95bd2 | 1467 | if (dso != NULL) { |
b5d8bbe8 | 1468 | char sbuild_id[SBUILD_ID_SIZE]; |
08d95bd2 RR |
1469 | |
1470 | dso__set_build_id(dso, &bev->build_id); | |
1471 | ||
1deec1bd NK |
1472 | if (dso_type != DSO_TYPE_USER) { |
1473 | struct kmod_path m = { .name = NULL, }; | |
1474 | ||
1475 | if (!kmod_path__parse_name(&m, filename) && m.kmod) | |
6b335e8f | 1476 | dso__set_module_info(dso, &m, machine); |
1deec1bd NK |
1477 | else |
1478 | dso->kernel = dso_type; | |
1479 | ||
1480 | free(m.name); | |
1481 | } | |
08d95bd2 RR |
1482 | |
1483 | build_id__sprintf(dso->build_id, sizeof(dso->build_id), | |
1484 | sbuild_id); | |
1485 | pr_debug("build id event received for %s: %s\n", | |
1486 | dso->long_name, sbuild_id); | |
d3a7c489 | 1487 | dso__put(dso); |
08d95bd2 RR |
1488 | } |
1489 | ||
1490 | err = 0; | |
1491 | out: | |
1492 | return err; | |
1493 | } | |
1494 | ||
1495 | static int perf_header__read_build_ids_abi_quirk(struct perf_header *header, | |
1496 | int input, u64 offset, u64 size) | |
1497 | { | |
1498 | struct perf_session *session = container_of(header, struct perf_session, header); | |
1499 | struct { | |
1500 | struct perf_event_header header; | |
9ac3e487 | 1501 | u8 build_id[PERF_ALIGN(BUILD_ID_SIZE, sizeof(u64))]; |
08d95bd2 RR |
1502 | char filename[0]; |
1503 | } old_bev; | |
1504 | struct build_id_event bev; | |
1505 | char filename[PATH_MAX]; | |
1506 | u64 limit = offset + size; | |
1507 | ||
1508 | while (offset < limit) { | |
1509 | ssize_t len; | |
1510 | ||
5323f60c | 1511 | if (readn(input, &old_bev, sizeof(old_bev)) != sizeof(old_bev)) |
08d95bd2 RR |
1512 | return -1; |
1513 | ||
1514 | if (header->needs_swap) | |
1515 | perf_event_header__bswap(&old_bev.header); | |
1516 | ||
1517 | len = old_bev.header.size - sizeof(old_bev); | |
5323f60c | 1518 | if (readn(input, filename, len) != len) |
08d95bd2 RR |
1519 | return -1; |
1520 | ||
1521 | bev.header = old_bev.header; | |
1522 | ||
1523 | /* | |
1524 | * As the pid is the missing value, we need to fill | |
1525 | * it properly. The header.misc value give us nice hint. | |
1526 | */ | |
1527 | bev.pid = HOST_KERNEL_ID; | |
1528 | if (bev.header.misc == PERF_RECORD_MISC_GUEST_USER || | |
1529 | bev.header.misc == PERF_RECORD_MISC_GUEST_KERNEL) | |
1530 | bev.pid = DEFAULT_GUEST_KERNEL_ID; | |
1531 | ||
1532 | memcpy(bev.build_id, old_bev.build_id, sizeof(bev.build_id)); | |
1533 | __event_process_build_id(&bev, filename, session); | |
1534 | ||
1535 | offset += bev.header.size; | |
1536 | } | |
1537 | ||
1538 | return 0; | |
1539 | } | |
1540 | ||
1541 | static int perf_header__read_build_ids(struct perf_header *header, | |
1542 | int input, u64 offset, u64 size) | |
1543 | { | |
1544 | struct perf_session *session = container_of(header, struct perf_session, header); | |
1545 | struct build_id_event bev; | |
1546 | char filename[PATH_MAX]; | |
1547 | u64 limit = offset + size, orig_offset = offset; | |
1548 | int err = -1; | |
1549 | ||
1550 | while (offset < limit) { | |
1551 | ssize_t len; | |
1552 | ||
5323f60c | 1553 | if (readn(input, &bev, sizeof(bev)) != sizeof(bev)) |
08d95bd2 RR |
1554 | goto out; |
1555 | ||
1556 | if (header->needs_swap) | |
1557 | perf_event_header__bswap(&bev.header); | |
1558 | ||
1559 | len = bev.header.size - sizeof(bev); | |
5323f60c | 1560 | if (readn(input, filename, len) != len) |
08d95bd2 RR |
1561 | goto out; |
1562 | /* | |
1563 | * The a1645ce1 changeset: | |
1564 | * | |
1565 | * "perf: 'perf kvm' tool for monitoring guest performance from host" | |
1566 | * | |
1567 | * Added a field to struct build_id_event that broke the file | |
1568 | * format. | |
1569 | * | |
1570 | * Since the kernel build-id is the first entry, process the | |
1571 | * table using the old format if the well known | |
1572 | * '[kernel.kallsyms]' string for the kernel build-id has the | |
1573 | * first 4 characters chopped off (where the pid_t sits). | |
1574 | */ | |
1575 | if (memcmp(filename, "nel.kallsyms]", 13) == 0) { | |
1576 | if (lseek(input, orig_offset, SEEK_SET) == (off_t)-1) | |
1577 | return -1; | |
1578 | return perf_header__read_build_ids_abi_quirk(header, input, offset, size); | |
1579 | } | |
1580 | ||
1581 | __event_process_build_id(&bev, filename, session); | |
1582 | ||
1583 | offset += bev.header.size; | |
1584 | } | |
1585 | err = 0; | |
1586 | out: | |
1587 | return err; | |
1588 | } | |
1589 | ||
3d7eb86b NK |
1590 | static int process_tracing_data(struct perf_file_section *section __maybe_unused, |
1591 | struct perf_header *ph __maybe_unused, | |
1592 | int fd, void *data) | |
f1c67db7 | 1593 | { |
3dce2ce3 NK |
1594 | ssize_t ret = trace_report(fd, data, false); |
1595 | return ret < 0 ? -1 : 0; | |
f1c67db7 RR |
1596 | } |
1597 | ||
1598 | static int process_build_id(struct perf_file_section *section, | |
3d7eb86b | 1599 | struct perf_header *ph, int fd, |
1d037ca1 | 1600 | void *data __maybe_unused) |
f1c67db7 RR |
1601 | { |
1602 | if (perf_header__read_build_ids(ph, fd, section->offset, section->size)) | |
1603 | pr_debug("Failed to read buildids, continuing...\n"); | |
1604 | return 0; | |
1605 | } | |
1606 | ||
a1ae5655 | 1607 | static int process_hostname(struct perf_file_section *section __maybe_unused, |
3d7eb86b NK |
1608 | struct perf_header *ph, int fd, |
1609 | void *data __maybe_unused) | |
a1ae5655 NK |
1610 | { |
1611 | ph->env.hostname = do_read_string(fd, ph); | |
1612 | return ph->env.hostname ? 0 : -ENOMEM; | |
1613 | } | |
1614 | ||
1615 | static int process_osrelease(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1616 | struct perf_header *ph, int fd, |
1617 | void *data __maybe_unused) | |
a1ae5655 NK |
1618 | { |
1619 | ph->env.os_release = do_read_string(fd, ph); | |
1620 | return ph->env.os_release ? 0 : -ENOMEM; | |
1621 | } | |
1622 | ||
1623 | static int process_version(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1624 | struct perf_header *ph, int fd, |
1625 | void *data __maybe_unused) | |
a1ae5655 NK |
1626 | { |
1627 | ph->env.version = do_read_string(fd, ph); | |
1628 | return ph->env.version ? 0 : -ENOMEM; | |
1629 | } | |
1630 | ||
1631 | static int process_arch(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1632 | struct perf_header *ph, int fd, |
1633 | void *data __maybe_unused) | |
a1ae5655 NK |
1634 | { |
1635 | ph->env.arch = do_read_string(fd, ph); | |
1636 | return ph->env.arch ? 0 : -ENOMEM; | |
1637 | } | |
1638 | ||
1639 | static int process_nrcpus(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1640 | struct perf_header *ph, int fd, |
1641 | void *data __maybe_unused) | |
a1ae5655 | 1642 | { |
727ebd54 | 1643 | ssize_t ret; |
a1ae5655 NK |
1644 | u32 nr; |
1645 | ||
5323f60c | 1646 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1647 | if (ret != sizeof(nr)) |
1648 | return -1; | |
1649 | ||
1650 | if (ph->needs_swap) | |
1651 | nr = bswap_32(nr); | |
1652 | ||
caa47047 | 1653 | ph->env.nr_cpus_avail = nr; |
a1ae5655 | 1654 | |
5323f60c | 1655 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1656 | if (ret != sizeof(nr)) |
1657 | return -1; | |
1658 | ||
1659 | if (ph->needs_swap) | |
1660 | nr = bswap_32(nr); | |
1661 | ||
caa47047 | 1662 | ph->env.nr_cpus_online = nr; |
a1ae5655 NK |
1663 | return 0; |
1664 | } | |
1665 | ||
1666 | static int process_cpudesc(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1667 | struct perf_header *ph, int fd, |
1668 | void *data __maybe_unused) | |
a1ae5655 NK |
1669 | { |
1670 | ph->env.cpu_desc = do_read_string(fd, ph); | |
1671 | return ph->env.cpu_desc ? 0 : -ENOMEM; | |
1672 | } | |
1673 | ||
1674 | static int process_cpuid(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1675 | struct perf_header *ph, int fd, |
1676 | void *data __maybe_unused) | |
a1ae5655 NK |
1677 | { |
1678 | ph->env.cpuid = do_read_string(fd, ph); | |
1679 | return ph->env.cpuid ? 0 : -ENOMEM; | |
1680 | } | |
1681 | ||
1682 | static int process_total_mem(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1683 | struct perf_header *ph, int fd, |
1684 | void *data __maybe_unused) | |
a1ae5655 NK |
1685 | { |
1686 | uint64_t mem; | |
727ebd54 | 1687 | ssize_t ret; |
a1ae5655 | 1688 | |
5323f60c | 1689 | ret = readn(fd, &mem, sizeof(mem)); |
a1ae5655 NK |
1690 | if (ret != sizeof(mem)) |
1691 | return -1; | |
1692 | ||
1693 | if (ph->needs_swap) | |
1694 | mem = bswap_64(mem); | |
1695 | ||
1696 | ph->env.total_mem = mem; | |
1697 | return 0; | |
1698 | } | |
1699 | ||
7c2f7afd RR |
1700 | static struct perf_evsel * |
1701 | perf_evlist__find_by_index(struct perf_evlist *evlist, int idx) | |
1702 | { | |
1703 | struct perf_evsel *evsel; | |
1704 | ||
e5cadb93 | 1705 | evlist__for_each_entry(evlist, evsel) { |
7c2f7afd RR |
1706 | if (evsel->idx == idx) |
1707 | return evsel; | |
1708 | } | |
1709 | ||
1710 | return NULL; | |
1711 | } | |
1712 | ||
1713 | static void | |
3d7eb86b NK |
1714 | perf_evlist__set_event_name(struct perf_evlist *evlist, |
1715 | struct perf_evsel *event) | |
7c2f7afd RR |
1716 | { |
1717 | struct perf_evsel *evsel; | |
1718 | ||
1719 | if (!event->name) | |
1720 | return; | |
1721 | ||
1722 | evsel = perf_evlist__find_by_index(evlist, event->idx); | |
1723 | if (!evsel) | |
1724 | return; | |
1725 | ||
1726 | if (evsel->name) | |
1727 | return; | |
1728 | ||
1729 | evsel->name = strdup(event->name); | |
1730 | } | |
1731 | ||
1732 | static int | |
1d037ca1 | 1733 | process_event_desc(struct perf_file_section *section __maybe_unused, |
3d7eb86b | 1734 | struct perf_header *header, int fd, |
1d037ca1 | 1735 | void *data __maybe_unused) |
7c2f7afd | 1736 | { |
3d7eb86b | 1737 | struct perf_session *session; |
7c2f7afd RR |
1738 | struct perf_evsel *evsel, *events = read_event_desc(header, fd); |
1739 | ||
1740 | if (!events) | |
1741 | return 0; | |
1742 | ||
3d7eb86b | 1743 | session = container_of(header, struct perf_session, header); |
7c2f7afd RR |
1744 | for (evsel = events; evsel->attr.size; evsel++) |
1745 | perf_evlist__set_event_name(session->evlist, evsel); | |
1746 | ||
1747 | free_event_desc(events); | |
1748 | ||
1749 | return 0; | |
1750 | } | |
1751 | ||
768dd3f3 | 1752 | static int process_cmdline(struct perf_file_section *section, |
3d7eb86b NK |
1753 | struct perf_header *ph, int fd, |
1754 | void *data __maybe_unused) | |
a1ae5655 | 1755 | { |
727ebd54 | 1756 | ssize_t ret; |
768dd3f3 JO |
1757 | char *str, *cmdline = NULL, **argv = NULL; |
1758 | u32 nr, i, len = 0; | |
a1ae5655 | 1759 | |
5323f60c | 1760 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1761 | if (ret != sizeof(nr)) |
1762 | return -1; | |
1763 | ||
1764 | if (ph->needs_swap) | |
1765 | nr = bswap_32(nr); | |
1766 | ||
1767 | ph->env.nr_cmdline = nr; | |
768dd3f3 JO |
1768 | |
1769 | cmdline = zalloc(section->size + nr + 1); | |
1770 | if (!cmdline) | |
1771 | return -1; | |
1772 | ||
1773 | argv = zalloc(sizeof(char *) * (nr + 1)); | |
1774 | if (!argv) | |
1775 | goto error; | |
a1ae5655 NK |
1776 | |
1777 | for (i = 0; i < nr; i++) { | |
1778 | str = do_read_string(fd, ph); | |
1779 | if (!str) | |
1780 | goto error; | |
1781 | ||
768dd3f3 JO |
1782 | argv[i] = cmdline + len; |
1783 | memcpy(argv[i], str, strlen(str) + 1); | |
1784 | len += strlen(str) + 1; | |
a1ae5655 NK |
1785 | free(str); |
1786 | } | |
768dd3f3 JO |
1787 | ph->env.cmdline = cmdline; |
1788 | ph->env.cmdline_argv = (const char **) argv; | |
a1ae5655 NK |
1789 | return 0; |
1790 | ||
1791 | error: | |
768dd3f3 JO |
1792 | free(argv); |
1793 | free(cmdline); | |
a1ae5655 NK |
1794 | return -1; |
1795 | } | |
1796 | ||
2bb00d2f | 1797 | static int process_cpu_topology(struct perf_file_section *section, |
3d7eb86b NK |
1798 | struct perf_header *ph, int fd, |
1799 | void *data __maybe_unused) | |
a1ae5655 | 1800 | { |
727ebd54 | 1801 | ssize_t ret; |
a1ae5655 NK |
1802 | u32 nr, i; |
1803 | char *str; | |
1804 | struct strbuf sb; | |
da8a58b5 | 1805 | int cpu_nr = ph->env.nr_cpus_avail; |
2bb00d2f KL |
1806 | u64 size = 0; |
1807 | ||
1808 | ph->env.cpu = calloc(cpu_nr, sizeof(*ph->env.cpu)); | |
1809 | if (!ph->env.cpu) | |
1810 | return -1; | |
a1ae5655 | 1811 | |
5323f60c | 1812 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 | 1813 | if (ret != sizeof(nr)) |
2bb00d2f | 1814 | goto free_cpu; |
a1ae5655 NK |
1815 | |
1816 | if (ph->needs_swap) | |
1817 | nr = bswap_32(nr); | |
1818 | ||
1819 | ph->env.nr_sibling_cores = nr; | |
2bb00d2f | 1820 | size += sizeof(u32); |
642aadaa MH |
1821 | if (strbuf_init(&sb, 128) < 0) |
1822 | goto free_cpu; | |
a1ae5655 NK |
1823 | |
1824 | for (i = 0; i < nr; i++) { | |
1825 | str = do_read_string(fd, ph); | |
1826 | if (!str) | |
1827 | goto error; | |
1828 | ||
1829 | /* include a NULL character at the end */ | |
642aadaa MH |
1830 | if (strbuf_add(&sb, str, strlen(str) + 1) < 0) |
1831 | goto error; | |
2bb00d2f | 1832 | size += string_size(str); |
a1ae5655 NK |
1833 | free(str); |
1834 | } | |
1835 | ph->env.sibling_cores = strbuf_detach(&sb, NULL); | |
1836 | ||
5323f60c | 1837 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1838 | if (ret != sizeof(nr)) |
1839 | return -1; | |
1840 | ||
1841 | if (ph->needs_swap) | |
1842 | nr = bswap_32(nr); | |
1843 | ||
1844 | ph->env.nr_sibling_threads = nr; | |
2bb00d2f | 1845 | size += sizeof(u32); |
a1ae5655 NK |
1846 | |
1847 | for (i = 0; i < nr; i++) { | |
1848 | str = do_read_string(fd, ph); | |
1849 | if (!str) | |
1850 | goto error; | |
1851 | ||
1852 | /* include a NULL character at the end */ | |
642aadaa MH |
1853 | if (strbuf_add(&sb, str, strlen(str) + 1) < 0) |
1854 | goto error; | |
2bb00d2f | 1855 | size += string_size(str); |
a1ae5655 NK |
1856 | free(str); |
1857 | } | |
1858 | ph->env.sibling_threads = strbuf_detach(&sb, NULL); | |
2bb00d2f KL |
1859 | |
1860 | /* | |
1861 | * The header may be from old perf, | |
1862 | * which doesn't include core id and socket id information. | |
1863 | */ | |
1864 | if (section->size <= size) { | |
1865 | zfree(&ph->env.cpu); | |
1866 | return 0; | |
1867 | } | |
1868 | ||
1869 | for (i = 0; i < (u32)cpu_nr; i++) { | |
1870 | ret = readn(fd, &nr, sizeof(nr)); | |
1871 | if (ret != sizeof(nr)) | |
1872 | goto free_cpu; | |
1873 | ||
1874 | if (ph->needs_swap) | |
1875 | nr = bswap_32(nr); | |
1876 | ||
2bb00d2f KL |
1877 | ph->env.cpu[i].core_id = nr; |
1878 | ||
1879 | ret = readn(fd, &nr, sizeof(nr)); | |
1880 | if (ret != sizeof(nr)) | |
1881 | goto free_cpu; | |
1882 | ||
1883 | if (ph->needs_swap) | |
1884 | nr = bswap_32(nr); | |
1885 | ||
da8a58b5 | 1886 | if (nr != (u32)-1 && nr > (u32)cpu_nr) { |
2bb00d2f KL |
1887 | pr_debug("socket_id number is too big." |
1888 | "You may need to upgrade the perf tool.\n"); | |
1889 | goto free_cpu; | |
1890 | } | |
1891 | ||
1892 | ph->env.cpu[i].socket_id = nr; | |
1893 | } | |
1894 | ||
a1ae5655 NK |
1895 | return 0; |
1896 | ||
1897 | error: | |
1898 | strbuf_release(&sb); | |
2bb00d2f KL |
1899 | free_cpu: |
1900 | zfree(&ph->env.cpu); | |
a1ae5655 NK |
1901 | return -1; |
1902 | } | |
1903 | ||
1904 | static int process_numa_topology(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1905 | struct perf_header *ph, int fd, |
1906 | void *data __maybe_unused) | |
a1ae5655 | 1907 | { |
c60da22a | 1908 | struct numa_node *nodes, *n; |
727ebd54 | 1909 | ssize_t ret; |
c60da22a | 1910 | u32 nr, i; |
a1ae5655 | 1911 | char *str; |
a1ae5655 NK |
1912 | |
1913 | /* nr nodes */ | |
5323f60c | 1914 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 | 1915 | if (ret != sizeof(nr)) |
642aadaa | 1916 | return -1; |
a1ae5655 NK |
1917 | |
1918 | if (ph->needs_swap) | |
1919 | nr = bswap_32(nr); | |
1920 | ||
c60da22a JO |
1921 | nodes = zalloc(sizeof(*nodes) * nr); |
1922 | if (!nodes) | |
1923 | return -ENOMEM; | |
a1ae5655 NK |
1924 | |
1925 | for (i = 0; i < nr; i++) { | |
c60da22a JO |
1926 | n = &nodes[i]; |
1927 | ||
a1ae5655 | 1928 | /* node number */ |
c60da22a JO |
1929 | ret = readn(fd, &n->node, sizeof(u32)); |
1930 | if (ret != sizeof(n->node)) | |
a1ae5655 NK |
1931 | goto error; |
1932 | ||
c60da22a | 1933 | ret = readn(fd, &n->mem_total, sizeof(u64)); |
a1ae5655 NK |
1934 | if (ret != sizeof(u64)) |
1935 | goto error; | |
1936 | ||
c60da22a | 1937 | ret = readn(fd, &n->mem_free, sizeof(u64)); |
a1ae5655 NK |
1938 | if (ret != sizeof(u64)) |
1939 | goto error; | |
1940 | ||
1941 | if (ph->needs_swap) { | |
c60da22a JO |
1942 | n->node = bswap_32(n->node); |
1943 | n->mem_total = bswap_64(n->mem_total); | |
1944 | n->mem_free = bswap_64(n->mem_free); | |
a1ae5655 NK |
1945 | } |
1946 | ||
a1ae5655 NK |
1947 | str = do_read_string(fd, ph); |
1948 | if (!str) | |
1949 | goto error; | |
1950 | ||
c60da22a JO |
1951 | n->map = cpu_map__new(str); |
1952 | if (!n->map) | |
642aadaa | 1953 | goto error; |
c60da22a | 1954 | |
a1ae5655 NK |
1955 | free(str); |
1956 | } | |
f957a530 | 1957 | ph->env.nr_numa_nodes = nr; |
c60da22a | 1958 | ph->env.numa_nodes = nodes; |
a1ae5655 NK |
1959 | return 0; |
1960 | ||
1961 | error: | |
c60da22a | 1962 | free(nodes); |
a1ae5655 NK |
1963 | return -1; |
1964 | } | |
1965 | ||
1966 | static int process_pmu_mappings(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1967 | struct perf_header *ph, int fd, |
1968 | void *data __maybe_unused) | |
a1ae5655 | 1969 | { |
727ebd54 | 1970 | ssize_t ret; |
a1ae5655 NK |
1971 | char *name; |
1972 | u32 pmu_num; | |
1973 | u32 type; | |
1974 | struct strbuf sb; | |
1975 | ||
5323f60c | 1976 | ret = readn(fd, &pmu_num, sizeof(pmu_num)); |
a1ae5655 NK |
1977 | if (ret != sizeof(pmu_num)) |
1978 | return -1; | |
1979 | ||
1980 | if (ph->needs_swap) | |
1981 | pmu_num = bswap_32(pmu_num); | |
1982 | ||
1983 | if (!pmu_num) { | |
1984 | pr_debug("pmu mappings not available\n"); | |
1985 | return 0; | |
1986 | } | |
1987 | ||
1988 | ph->env.nr_pmu_mappings = pmu_num; | |
642aadaa MH |
1989 | if (strbuf_init(&sb, 128) < 0) |
1990 | return -1; | |
a1ae5655 NK |
1991 | |
1992 | while (pmu_num) { | |
5323f60c | 1993 | if (readn(fd, &type, sizeof(type)) != sizeof(type)) |
a1ae5655 NK |
1994 | goto error; |
1995 | if (ph->needs_swap) | |
1996 | type = bswap_32(type); | |
1997 | ||
1998 | name = do_read_string(fd, ph); | |
1999 | if (!name) | |
2000 | goto error; | |
2001 | ||
642aadaa MH |
2002 | if (strbuf_addf(&sb, "%u:%s", type, name) < 0) |
2003 | goto error; | |
a1ae5655 | 2004 | /* include a NULL character at the end */ |
642aadaa MH |
2005 | if (strbuf_add(&sb, "", 1) < 0) |
2006 | goto error; | |
a1ae5655 | 2007 | |
e0838e02 KL |
2008 | if (!strcmp(name, "msr")) |
2009 | ph->env.msr_pmu_type = type; | |
2010 | ||
a1ae5655 NK |
2011 | free(name); |
2012 | pmu_num--; | |
2013 | } | |
2014 | ph->env.pmu_mappings = strbuf_detach(&sb, NULL); | |
2015 | return 0; | |
2016 | ||
2017 | error: | |
2018 | strbuf_release(&sb); | |
2019 | return -1; | |
2020 | } | |
2021 | ||
a8bb559b NK |
2022 | static int process_group_desc(struct perf_file_section *section __maybe_unused, |
2023 | struct perf_header *ph, int fd, | |
2024 | void *data __maybe_unused) | |
2025 | { | |
2026 | size_t ret = -1; | |
2027 | u32 i, nr, nr_groups; | |
2028 | struct perf_session *session; | |
2029 | struct perf_evsel *evsel, *leader = NULL; | |
2030 | struct group_desc { | |
2031 | char *name; | |
2032 | u32 leader_idx; | |
2033 | u32 nr_members; | |
2034 | } *desc; | |
2035 | ||
2036 | if (readn(fd, &nr_groups, sizeof(nr_groups)) != sizeof(nr_groups)) | |
2037 | return -1; | |
2038 | ||
2039 | if (ph->needs_swap) | |
2040 | nr_groups = bswap_32(nr_groups); | |
2041 | ||
2042 | ph->env.nr_groups = nr_groups; | |
2043 | if (!nr_groups) { | |
2044 | pr_debug("group desc not available\n"); | |
2045 | return 0; | |
2046 | } | |
2047 | ||
2048 | desc = calloc(nr_groups, sizeof(*desc)); | |
2049 | if (!desc) | |
2050 | return -1; | |
2051 | ||
2052 | for (i = 0; i < nr_groups; i++) { | |
2053 | desc[i].name = do_read_string(fd, ph); | |
2054 | if (!desc[i].name) | |
2055 | goto out_free; | |
2056 | ||
2057 | if (readn(fd, &desc[i].leader_idx, sizeof(u32)) != sizeof(u32)) | |
2058 | goto out_free; | |
2059 | ||
2060 | if (readn(fd, &desc[i].nr_members, sizeof(u32)) != sizeof(u32)) | |
2061 | goto out_free; | |
2062 | ||
2063 | if (ph->needs_swap) { | |
2064 | desc[i].leader_idx = bswap_32(desc[i].leader_idx); | |
2065 | desc[i].nr_members = bswap_32(desc[i].nr_members); | |
2066 | } | |
2067 | } | |
2068 | ||
2069 | /* | |
2070 | * Rebuild group relationship based on the group_desc | |
2071 | */ | |
2072 | session = container_of(ph, struct perf_session, header); | |
2073 | session->evlist->nr_groups = nr_groups; | |
2074 | ||
2075 | i = nr = 0; | |
e5cadb93 | 2076 | evlist__for_each_entry(session->evlist, evsel) { |
a8bb559b NK |
2077 | if (evsel->idx == (int) desc[i].leader_idx) { |
2078 | evsel->leader = evsel; | |
2079 | /* {anon_group} is a dummy name */ | |
210e812f | 2080 | if (strcmp(desc[i].name, "{anon_group}")) { |
a8bb559b | 2081 | evsel->group_name = desc[i].name; |
210e812f NK |
2082 | desc[i].name = NULL; |
2083 | } | |
a8bb559b NK |
2084 | evsel->nr_members = desc[i].nr_members; |
2085 | ||
2086 | if (i >= nr_groups || nr > 0) { | |
2087 | pr_debug("invalid group desc\n"); | |
2088 | goto out_free; | |
2089 | } | |
2090 | ||
2091 | leader = evsel; | |
2092 | nr = evsel->nr_members - 1; | |
2093 | i++; | |
2094 | } else if (nr) { | |
2095 | /* This is a group member */ | |
2096 | evsel->leader = leader; | |
2097 | ||
2098 | nr--; | |
2099 | } | |
2100 | } | |
2101 | ||
2102 | if (i != nr_groups || nr != 0) { | |
2103 | pr_debug("invalid group desc\n"); | |
2104 | goto out_free; | |
2105 | } | |
2106 | ||
2107 | ret = 0; | |
2108 | out_free: | |
50a2740b | 2109 | for (i = 0; i < nr_groups; i++) |
74cf249d | 2110 | zfree(&desc[i].name); |
a8bb559b NK |
2111 | free(desc); |
2112 | ||
2113 | return ret; | |
2114 | } | |
2115 | ||
99fa2984 AH |
2116 | static int process_auxtrace(struct perf_file_section *section, |
2117 | struct perf_header *ph, int fd, | |
2118 | void *data __maybe_unused) | |
2119 | { | |
2120 | struct perf_session *session; | |
2121 | int err; | |
2122 | ||
2123 | session = container_of(ph, struct perf_session, header); | |
2124 | ||
2125 | err = auxtrace_index__process(fd, section->size, session, | |
2126 | ph->needs_swap); | |
2127 | if (err < 0) | |
2128 | pr_err("Failed to process auxtrace index\n"); | |
2129 | return err; | |
2130 | } | |
2131 | ||
720e98b5 JO |
2132 | static int process_cache(struct perf_file_section *section __maybe_unused, |
2133 | struct perf_header *ph __maybe_unused, int fd __maybe_unused, | |
2134 | void *data __maybe_unused) | |
2135 | { | |
2136 | struct cpu_cache_level *caches; | |
2137 | u32 cnt, i, version; | |
2138 | ||
2139 | if (readn(fd, &version, sizeof(version)) != sizeof(version)) | |
2140 | return -1; | |
2141 | ||
2142 | if (ph->needs_swap) | |
2143 | version = bswap_32(version); | |
2144 | ||
2145 | if (version != 1) | |
2146 | return -1; | |
2147 | ||
2148 | if (readn(fd, &cnt, sizeof(cnt)) != sizeof(cnt)) | |
2149 | return -1; | |
2150 | ||
2151 | if (ph->needs_swap) | |
2152 | cnt = bswap_32(cnt); | |
2153 | ||
2154 | caches = zalloc(sizeof(*caches) * cnt); | |
2155 | if (!caches) | |
2156 | return -1; | |
2157 | ||
2158 | for (i = 0; i < cnt; i++) { | |
2159 | struct cpu_cache_level c; | |
2160 | ||
2161 | #define _R(v) \ | |
2162 | if (readn(fd, &c.v, sizeof(u32)) != sizeof(u32))\ | |
2163 | goto out_free_caches; \ | |
2164 | if (ph->needs_swap) \ | |
2165 | c.v = bswap_32(c.v); \ | |
2166 | ||
2167 | _R(level) | |
2168 | _R(line_size) | |
2169 | _R(sets) | |
2170 | _R(ways) | |
2171 | #undef _R | |
2172 | ||
2173 | #define _R(v) \ | |
2174 | c.v = do_read_string(fd, ph); \ | |
2175 | if (!c.v) \ | |
2176 | goto out_free_caches; | |
2177 | ||
2178 | _R(type) | |
2179 | _R(size) | |
2180 | _R(map) | |
2181 | #undef _R | |
2182 | ||
2183 | caches[i] = c; | |
2184 | } | |
2185 | ||
2186 | ph->env.caches = caches; | |
2187 | ph->env.caches_cnt = cnt; | |
2188 | return 0; | |
2189 | out_free_caches: | |
2190 | free(caches); | |
2191 | return -1; | |
2192 | } | |
2193 | ||
fbe96f29 SE |
2194 | struct feature_ops { |
2195 | int (*write)(int fd, struct perf_header *h, struct perf_evlist *evlist); | |
2196 | void (*print)(struct perf_header *h, int fd, FILE *fp); | |
f1c67db7 | 2197 | int (*process)(struct perf_file_section *section, |
3d7eb86b | 2198 | struct perf_header *h, int fd, void *data); |
fbe96f29 SE |
2199 | const char *name; |
2200 | bool full_only; | |
2201 | }; | |
2202 | ||
8cdfa78a RR |
2203 | #define FEAT_OPA(n, func) \ |
2204 | [n] = { .name = #n, .write = write_##func, .print = print_##func } | |
f1c67db7 RR |
2205 | #define FEAT_OPP(n, func) \ |
2206 | [n] = { .name = #n, .write = write_##func, .print = print_##func, \ | |
2207 | .process = process_##func } | |
8cdfa78a | 2208 | #define FEAT_OPF(n, func) \ |
f1c67db7 | 2209 | [n] = { .name = #n, .write = write_##func, .print = print_##func, \ |
a1ae5655 | 2210 | .process = process_##func, .full_only = true } |
8cdfa78a RR |
2211 | |
2212 | /* feature_ops not implemented: */ | |
2eeaaa09 SE |
2213 | #define print_tracing_data NULL |
2214 | #define print_build_id NULL | |
fbe96f29 SE |
2215 | |
2216 | static const struct feature_ops feat_ops[HEADER_LAST_FEATURE] = { | |
2eeaaa09 | 2217 | FEAT_OPP(HEADER_TRACING_DATA, tracing_data), |
f1c67db7 | 2218 | FEAT_OPP(HEADER_BUILD_ID, build_id), |
a1ae5655 NK |
2219 | FEAT_OPP(HEADER_HOSTNAME, hostname), |
2220 | FEAT_OPP(HEADER_OSRELEASE, osrelease), | |
2221 | FEAT_OPP(HEADER_VERSION, version), | |
2222 | FEAT_OPP(HEADER_ARCH, arch), | |
2223 | FEAT_OPP(HEADER_NRCPUS, nrcpus), | |
2224 | FEAT_OPP(HEADER_CPUDESC, cpudesc), | |
37e9d750 | 2225 | FEAT_OPP(HEADER_CPUID, cpuid), |
a1ae5655 | 2226 | FEAT_OPP(HEADER_TOTAL_MEM, total_mem), |
7c2f7afd | 2227 | FEAT_OPP(HEADER_EVENT_DESC, event_desc), |
a1ae5655 | 2228 | FEAT_OPP(HEADER_CMDLINE, cmdline), |
8cdfa78a RR |
2229 | FEAT_OPF(HEADER_CPU_TOPOLOGY, cpu_topology), |
2230 | FEAT_OPF(HEADER_NUMA_TOPOLOGY, numa_topology), | |
330aa675 | 2231 | FEAT_OPA(HEADER_BRANCH_STACK, branch_stack), |
a1ae5655 | 2232 | FEAT_OPP(HEADER_PMU_MAPPINGS, pmu_mappings), |
a8bb559b | 2233 | FEAT_OPP(HEADER_GROUP_DESC, group_desc), |
99fa2984 | 2234 | FEAT_OPP(HEADER_AUXTRACE, auxtrace), |
ffa517ad | 2235 | FEAT_OPA(HEADER_STAT, stat), |
720e98b5 | 2236 | FEAT_OPF(HEADER_CACHE, cache), |
fbe96f29 SE |
2237 | }; |
2238 | ||
2239 | struct header_print_data { | |
2240 | FILE *fp; | |
2241 | bool full; /* extended list of headers */ | |
2242 | }; | |
2243 | ||
2244 | static int perf_file_section__fprintf_info(struct perf_file_section *section, | |
2245 | struct perf_header *ph, | |
2246 | int feat, int fd, void *data) | |
2247 | { | |
2248 | struct header_print_data *hd = data; | |
2249 | ||
2250 | if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) { | |
2251 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " | |
2252 | "%d, continuing...\n", section->offset, feat); | |
2253 | return 0; | |
2254 | } | |
b1e5a9be | 2255 | if (feat >= HEADER_LAST_FEATURE) { |
fbe96f29 | 2256 | pr_warning("unknown feature %d\n", feat); |
f7a8a133 | 2257 | return 0; |
fbe96f29 SE |
2258 | } |
2259 | if (!feat_ops[feat].print) | |
2260 | return 0; | |
2261 | ||
2262 | if (!feat_ops[feat].full_only || hd->full) | |
2263 | feat_ops[feat].print(ph, fd, hd->fp); | |
2264 | else | |
2265 | fprintf(hd->fp, "# %s info available, use -I to display\n", | |
2266 | feat_ops[feat].name); | |
2267 | ||
2268 | return 0; | |
2269 | } | |
2270 | ||
2271 | int perf_header__fprintf_info(struct perf_session *session, FILE *fp, bool full) | |
2272 | { | |
2273 | struct header_print_data hd; | |
2274 | struct perf_header *header = &session->header; | |
cc9784bd | 2275 | int fd = perf_data_file__fd(session->file); |
f45f5615 | 2276 | struct stat st; |
aabae165 | 2277 | int ret, bit; |
f45f5615 | 2278 | |
fbe96f29 SE |
2279 | hd.fp = fp; |
2280 | hd.full = full; | |
2281 | ||
f45f5615 JO |
2282 | ret = fstat(fd, &st); |
2283 | if (ret == -1) | |
2284 | return -1; | |
2285 | ||
2286 | fprintf(fp, "# captured on: %s", ctime(&st.st_ctime)); | |
2287 | ||
fbe96f29 SE |
2288 | perf_header__process_sections(header, fd, &hd, |
2289 | perf_file_section__fprintf_info); | |
aabae165 | 2290 | |
c9d1c934 DCC |
2291 | if (session->file->is_pipe) |
2292 | return 0; | |
2293 | ||
aabae165 JO |
2294 | fprintf(fp, "# missing features: "); |
2295 | for_each_clear_bit(bit, header->adds_features, HEADER_LAST_FEATURE) { | |
2296 | if (bit) | |
2297 | fprintf(fp, "%s ", feat_ops[bit].name); | |
2298 | } | |
2299 | ||
2300 | fprintf(fp, "\n"); | |
fbe96f29 SE |
2301 | return 0; |
2302 | } | |
2303 | ||
fbe96f29 SE |
2304 | static int do_write_feat(int fd, struct perf_header *h, int type, |
2305 | struct perf_file_section **p, | |
2306 | struct perf_evlist *evlist) | |
2307 | { | |
2308 | int err; | |
2309 | int ret = 0; | |
2310 | ||
2311 | if (perf_header__has_feat(h, type)) { | |
b1e5a9be RR |
2312 | if (!feat_ops[type].write) |
2313 | return -1; | |
fbe96f29 SE |
2314 | |
2315 | (*p)->offset = lseek(fd, 0, SEEK_CUR); | |
2316 | ||
2317 | err = feat_ops[type].write(fd, h, evlist); | |
2318 | if (err < 0) { | |
0c2aff4c | 2319 | pr_debug("failed to write feature %s\n", feat_ops[type].name); |
fbe96f29 SE |
2320 | |
2321 | /* undo anything written */ | |
2322 | lseek(fd, (*p)->offset, SEEK_SET); | |
2323 | ||
2324 | return -1; | |
2325 | } | |
2326 | (*p)->size = lseek(fd, 0, SEEK_CUR) - (*p)->offset; | |
2327 | (*p)++; | |
2328 | } | |
2329 | return ret; | |
2330 | } | |
2331 | ||
1c0b04d1 | 2332 | static int perf_header__adds_write(struct perf_header *header, |
361c99a6 | 2333 | struct perf_evlist *evlist, int fd) |
2ba08250 | 2334 | { |
9e827dd0 | 2335 | int nr_sections; |
fbe96f29 | 2336 | struct perf_file_section *feat_sec, *p; |
9e827dd0 FW |
2337 | int sec_size; |
2338 | u64 sec_start; | |
b1e5a9be | 2339 | int feat; |
fbe96f29 | 2340 | int err; |
9e827dd0 | 2341 | |
1c0b04d1 | 2342 | nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS); |
9e827dd0 | 2343 | if (!nr_sections) |
d5eed904 | 2344 | return 0; |
9e827dd0 | 2345 | |
91b98804 | 2346 | feat_sec = p = calloc(nr_sections, sizeof(*feat_sec)); |
d5eed904 ACM |
2347 | if (feat_sec == NULL) |
2348 | return -ENOMEM; | |
9e827dd0 FW |
2349 | |
2350 | sec_size = sizeof(*feat_sec) * nr_sections; | |
2351 | ||
8d541e97 | 2352 | sec_start = header->feat_offset; |
f887f301 | 2353 | lseek(fd, sec_start + sec_size, SEEK_SET); |
2ba08250 | 2354 | |
b1e5a9be RR |
2355 | for_each_set_bit(feat, header->adds_features, HEADER_FEAT_BITS) { |
2356 | if (do_write_feat(fd, header, feat, &p, evlist)) | |
2357 | perf_header__clear_feat(header, feat); | |
2358 | } | |
9e827dd0 | 2359 | |
f887f301 | 2360 | lseek(fd, sec_start, SEEK_SET); |
fbe96f29 SE |
2361 | /* |
2362 | * may write more than needed due to dropped feature, but | |
2363 | * this is okay, reader will skip the mising entries | |
2364 | */ | |
d5eed904 ACM |
2365 | err = do_write(fd, feat_sec, sec_size); |
2366 | if (err < 0) | |
2367 | pr_debug("failed to write feature section\n"); | |
9e827dd0 | 2368 | free(feat_sec); |
d5eed904 | 2369 | return err; |
9e827dd0 | 2370 | } |
2ba08250 | 2371 | |
8dc58101 TZ |
2372 | int perf_header__write_pipe(int fd) |
2373 | { | |
2374 | struct perf_pipe_file_header f_header; | |
2375 | int err; | |
2376 | ||
2377 | f_header = (struct perf_pipe_file_header){ | |
2378 | .magic = PERF_MAGIC, | |
2379 | .size = sizeof(f_header), | |
2380 | }; | |
2381 | ||
2382 | err = do_write(fd, &f_header, sizeof(f_header)); | |
2383 | if (err < 0) { | |
2384 | pr_debug("failed to write perf pipe header\n"); | |
2385 | return err; | |
2386 | } | |
2387 | ||
2388 | return 0; | |
2389 | } | |
2390 | ||
a91e5431 ACM |
2391 | int perf_session__write_header(struct perf_session *session, |
2392 | struct perf_evlist *evlist, | |
2393 | int fd, bool at_exit) | |
7c6a1c65 PZ |
2394 | { |
2395 | struct perf_file_header f_header; | |
2396 | struct perf_file_attr f_attr; | |
1c0b04d1 | 2397 | struct perf_header *header = &session->header; |
563aecb2 | 2398 | struct perf_evsel *evsel; |
944d62ba | 2399 | u64 attr_offset; |
a91e5431 | 2400 | int err; |
7c6a1c65 PZ |
2401 | |
2402 | lseek(fd, sizeof(f_header), SEEK_SET); | |
2403 | ||
e5cadb93 | 2404 | evlist__for_each_entry(session->evlist, evsel) { |
6606f873 RR |
2405 | evsel->id_offset = lseek(fd, 0, SEEK_CUR); |
2406 | err = do_write(fd, evsel->id, evsel->ids * sizeof(u64)); | |
d5eed904 ACM |
2407 | if (err < 0) { |
2408 | pr_debug("failed to write perf header\n"); | |
2409 | return err; | |
2410 | } | |
7c6a1c65 PZ |
2411 | } |
2412 | ||
944d62ba | 2413 | attr_offset = lseek(fd, 0, SEEK_CUR); |
7c6a1c65 | 2414 | |
e5cadb93 | 2415 | evlist__for_each_entry(evlist, evsel) { |
7c6a1c65 | 2416 | f_attr = (struct perf_file_attr){ |
6606f873 | 2417 | .attr = evsel->attr, |
7c6a1c65 | 2418 | .ids = { |
6606f873 RR |
2419 | .offset = evsel->id_offset, |
2420 | .size = evsel->ids * sizeof(u64), | |
7c6a1c65 PZ |
2421 | } |
2422 | }; | |
d5eed904 ACM |
2423 | err = do_write(fd, &f_attr, sizeof(f_attr)); |
2424 | if (err < 0) { | |
2425 | pr_debug("failed to write perf header attribute\n"); | |
2426 | return err; | |
2427 | } | |
7c6a1c65 PZ |
2428 | } |
2429 | ||
d645c442 AH |
2430 | if (!header->data_offset) |
2431 | header->data_offset = lseek(fd, 0, SEEK_CUR); | |
8d541e97 | 2432 | header->feat_offset = header->data_offset + header->data_size; |
7c6a1c65 | 2433 | |
d5eed904 | 2434 | if (at_exit) { |
1c0b04d1 | 2435 | err = perf_header__adds_write(header, evlist, fd); |
d5eed904 ACM |
2436 | if (err < 0) |
2437 | return err; | |
2438 | } | |
9e827dd0 | 2439 | |
7c6a1c65 PZ |
2440 | f_header = (struct perf_file_header){ |
2441 | .magic = PERF_MAGIC, | |
2442 | .size = sizeof(f_header), | |
2443 | .attr_size = sizeof(f_attr), | |
2444 | .attrs = { | |
944d62ba | 2445 | .offset = attr_offset, |
a91e5431 | 2446 | .size = evlist->nr_entries * sizeof(f_attr), |
7c6a1c65 PZ |
2447 | }, |
2448 | .data = { | |
1c0b04d1 ACM |
2449 | .offset = header->data_offset, |
2450 | .size = header->data_size, | |
7c6a1c65 | 2451 | }, |
44b3c578 | 2452 | /* event_types is ignored, store zeros */ |
7c6a1c65 PZ |
2453 | }; |
2454 | ||
1c0b04d1 | 2455 | memcpy(&f_header.adds_features, &header->adds_features, sizeof(header->adds_features)); |
2ba08250 | 2456 | |
7c6a1c65 | 2457 | lseek(fd, 0, SEEK_SET); |
d5eed904 ACM |
2458 | err = do_write(fd, &f_header, sizeof(f_header)); |
2459 | if (err < 0) { | |
2460 | pr_debug("failed to write perf header\n"); | |
2461 | return err; | |
2462 | } | |
1c0b04d1 | 2463 | lseek(fd, header->data_offset + header->data_size, SEEK_SET); |
7c6a1c65 | 2464 | |
d5eed904 | 2465 | return 0; |
7c6a1c65 PZ |
2466 | } |
2467 | ||
1c0b04d1 | 2468 | static int perf_header__getbuffer64(struct perf_header *header, |
ba21594c ACM |
2469 | int fd, void *buf, size_t size) |
2470 | { | |
1e7972cc | 2471 | if (readn(fd, buf, size) <= 0) |
ba21594c ACM |
2472 | return -1; |
2473 | ||
1c0b04d1 | 2474 | if (header->needs_swap) |
ba21594c ACM |
2475 | mem_bswap_64(buf, size); |
2476 | ||
2477 | return 0; | |
2478 | } | |
2479 | ||
1c0b04d1 | 2480 | int perf_header__process_sections(struct perf_header *header, int fd, |
fbe96f29 | 2481 | void *data, |
1c0b04d1 | 2482 | int (*process)(struct perf_file_section *section, |
b1e5a9be RR |
2483 | struct perf_header *ph, |
2484 | int feat, int fd, void *data)) | |
2ba08250 | 2485 | { |
b1e5a9be | 2486 | struct perf_file_section *feat_sec, *sec; |
9e827dd0 FW |
2487 | int nr_sections; |
2488 | int sec_size; | |
b1e5a9be RR |
2489 | int feat; |
2490 | int err; | |
9e827dd0 | 2491 | |
1c0b04d1 | 2492 | nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS); |
9e827dd0 | 2493 | if (!nr_sections) |
37562eac | 2494 | return 0; |
9e827dd0 | 2495 | |
91b98804 | 2496 | feat_sec = sec = calloc(nr_sections, sizeof(*feat_sec)); |
9e827dd0 | 2497 | if (!feat_sec) |
37562eac | 2498 | return -1; |
9e827dd0 FW |
2499 | |
2500 | sec_size = sizeof(*feat_sec) * nr_sections; | |
2501 | ||
8d541e97 | 2502 | lseek(fd, header->feat_offset, SEEK_SET); |
9e827dd0 | 2503 | |
b1e5a9be RR |
2504 | err = perf_header__getbuffer64(header, fd, feat_sec, sec_size); |
2505 | if (err < 0) | |
769885f3 | 2506 | goto out_free; |
9e827dd0 | 2507 | |
b1e5a9be RR |
2508 | for_each_set_bit(feat, header->adds_features, HEADER_LAST_FEATURE) { |
2509 | err = process(sec++, header, feat, fd, data); | |
2510 | if (err < 0) | |
2511 | goto out_free; | |
2ba08250 | 2512 | } |
b1e5a9be | 2513 | err = 0; |
769885f3 | 2514 | out_free: |
37562eac ACM |
2515 | free(feat_sec); |
2516 | return err; | |
769885f3 | 2517 | } |
4778d2e4 | 2518 | |
114382a0 SE |
2519 | static const int attr_file_abi_sizes[] = { |
2520 | [0] = PERF_ATTR_SIZE_VER0, | |
2521 | [1] = PERF_ATTR_SIZE_VER1, | |
239cc478 | 2522 | [2] = PERF_ATTR_SIZE_VER2, |
0f6a3015 | 2523 | [3] = PERF_ATTR_SIZE_VER3, |
6a21c0b5 | 2524 | [4] = PERF_ATTR_SIZE_VER4, |
114382a0 SE |
2525 | 0, |
2526 | }; | |
2527 | ||
2528 | /* | |
2529 | * In the legacy file format, the magic number is not used to encode endianness. | |
2530 | * hdr_sz was used to encode endianness. But given that hdr_sz can vary based | |
2531 | * on ABI revisions, we need to try all combinations for all endianness to | |
2532 | * detect the endianness. | |
2533 | */ | |
2534 | static int try_all_file_abis(uint64_t hdr_sz, struct perf_header *ph) | |
73323f54 | 2535 | { |
114382a0 SE |
2536 | uint64_t ref_size, attr_size; |
2537 | int i; | |
73323f54 | 2538 | |
114382a0 SE |
2539 | for (i = 0 ; attr_file_abi_sizes[i]; i++) { |
2540 | ref_size = attr_file_abi_sizes[i] | |
2541 | + sizeof(struct perf_file_section); | |
2542 | if (hdr_sz != ref_size) { | |
2543 | attr_size = bswap_64(hdr_sz); | |
2544 | if (attr_size != ref_size) | |
2545 | continue; | |
73323f54 | 2546 | |
114382a0 SE |
2547 | ph->needs_swap = true; |
2548 | } | |
2549 | pr_debug("ABI%d perf.data file detected, need_swap=%d\n", | |
2550 | i, | |
2551 | ph->needs_swap); | |
2552 | return 0; | |
2553 | } | |
2554 | /* could not determine endianness */ | |
2555 | return -1; | |
2556 | } | |
73323f54 | 2557 | |
114382a0 SE |
2558 | #define PERF_PIPE_HDR_VER0 16 |
2559 | ||
2560 | static const size_t attr_pipe_abi_sizes[] = { | |
2561 | [0] = PERF_PIPE_HDR_VER0, | |
2562 | 0, | |
2563 | }; | |
2564 | ||
2565 | /* | |
2566 | * In the legacy pipe format, there is an implicit assumption that endiannesss | |
2567 | * between host recording the samples, and host parsing the samples is the | |
2568 | * same. This is not always the case given that the pipe output may always be | |
2569 | * redirected into a file and analyzed on a different machine with possibly a | |
2570 | * different endianness and perf_event ABI revsions in the perf tool itself. | |
2571 | */ | |
2572 | static int try_all_pipe_abis(uint64_t hdr_sz, struct perf_header *ph) | |
2573 | { | |
2574 | u64 attr_size; | |
2575 | int i; | |
2576 | ||
2577 | for (i = 0 ; attr_pipe_abi_sizes[i]; i++) { | |
2578 | if (hdr_sz != attr_pipe_abi_sizes[i]) { | |
2579 | attr_size = bswap_64(hdr_sz); | |
2580 | if (attr_size != hdr_sz) | |
2581 | continue; | |
73323f54 SE |
2582 | |
2583 | ph->needs_swap = true; | |
2584 | } | |
114382a0 | 2585 | pr_debug("Pipe ABI%d perf.data file detected\n", i); |
73323f54 SE |
2586 | return 0; |
2587 | } | |
114382a0 SE |
2588 | return -1; |
2589 | } | |
2590 | ||
e84ba4e2 FT |
2591 | bool is_perf_magic(u64 magic) |
2592 | { | |
2593 | if (!memcmp(&magic, __perf_magic1, sizeof(magic)) | |
2594 | || magic == __perf_magic2 | |
2595 | || magic == __perf_magic2_sw) | |
2596 | return true; | |
2597 | ||
2598 | return false; | |
2599 | } | |
2600 | ||
114382a0 SE |
2601 | static int check_magic_endian(u64 magic, uint64_t hdr_sz, |
2602 | bool is_pipe, struct perf_header *ph) | |
2603 | { | |
2604 | int ret; | |
2605 | ||
2606 | /* check for legacy format */ | |
2607 | ret = memcmp(&magic, __perf_magic1, sizeof(magic)); | |
2608 | if (ret == 0) { | |
2a08c3ec | 2609 | ph->version = PERF_HEADER_VERSION_1; |
114382a0 SE |
2610 | pr_debug("legacy perf.data format\n"); |
2611 | if (is_pipe) | |
2612 | return try_all_pipe_abis(hdr_sz, ph); | |
2613 | ||
2614 | return try_all_file_abis(hdr_sz, ph); | |
2615 | } | |
2616 | /* | |
2617 | * the new magic number serves two purposes: | |
2618 | * - unique number to identify actual perf.data files | |
2619 | * - encode endianness of file | |
2620 | */ | |
f7913971 | 2621 | ph->version = PERF_HEADER_VERSION_2; |
73323f54 | 2622 | |
114382a0 SE |
2623 | /* check magic number with one endianness */ |
2624 | if (magic == __perf_magic2) | |
73323f54 SE |
2625 | return 0; |
2626 | ||
114382a0 SE |
2627 | /* check magic number with opposite endianness */ |
2628 | if (magic != __perf_magic2_sw) | |
73323f54 SE |
2629 | return -1; |
2630 | ||
2631 | ph->needs_swap = true; | |
2632 | ||
2633 | return 0; | |
2634 | } | |
2635 | ||
1c0b04d1 | 2636 | int perf_file_header__read(struct perf_file_header *header, |
37562eac ACM |
2637 | struct perf_header *ph, int fd) |
2638 | { | |
727ebd54 | 2639 | ssize_t ret; |
73323f54 | 2640 | |
37562eac | 2641 | lseek(fd, 0, SEEK_SET); |
37562eac | 2642 | |
73323f54 SE |
2643 | ret = readn(fd, header, sizeof(*header)); |
2644 | if (ret <= 0) | |
37562eac ACM |
2645 | return -1; |
2646 | ||
114382a0 SE |
2647 | if (check_magic_endian(header->magic, |
2648 | header->attr_size, false, ph) < 0) { | |
2649 | pr_debug("magic/endian check failed\n"); | |
73323f54 | 2650 | return -1; |
114382a0 | 2651 | } |
ba21594c | 2652 | |
73323f54 | 2653 | if (ph->needs_swap) { |
1c0b04d1 | 2654 | mem_bswap_64(header, offsetof(struct perf_file_header, |
73323f54 | 2655 | adds_features)); |
ba21594c ACM |
2656 | } |
2657 | ||
1c0b04d1 | 2658 | if (header->size != sizeof(*header)) { |
37562eac | 2659 | /* Support the previous format */ |
1c0b04d1 ACM |
2660 | if (header->size == offsetof(typeof(*header), adds_features)) |
2661 | bitmap_zero(header->adds_features, HEADER_FEAT_BITS); | |
37562eac ACM |
2662 | else |
2663 | return -1; | |
d327fa43 | 2664 | } else if (ph->needs_swap) { |
d327fa43 DA |
2665 | /* |
2666 | * feature bitmap is declared as an array of unsigned longs -- | |
2667 | * not good since its size can differ between the host that | |
2668 | * generated the data file and the host analyzing the file. | |
2669 | * | |
2670 | * We need to handle endianness, but we don't know the size of | |
2671 | * the unsigned long where the file was generated. Take a best | |
2672 | * guess at determining it: try 64-bit swap first (ie., file | |
2673 | * created on a 64-bit host), and check if the hostname feature | |
2674 | * bit is set (this feature bit is forced on as of fbe96f2). | |
2675 | * If the bit is not, undo the 64-bit swap and try a 32-bit | |
2676 | * swap. If the hostname bit is still not set (e.g., older data | |
2677 | * file), punt and fallback to the original behavior -- | |
2678 | * clearing all feature bits and setting buildid. | |
2679 | */ | |
80c0120a DA |
2680 | mem_bswap_64(&header->adds_features, |
2681 | BITS_TO_U64(HEADER_FEAT_BITS)); | |
d327fa43 DA |
2682 | |
2683 | if (!test_bit(HEADER_HOSTNAME, header->adds_features)) { | |
80c0120a DA |
2684 | /* unswap as u64 */ |
2685 | mem_bswap_64(&header->adds_features, | |
2686 | BITS_TO_U64(HEADER_FEAT_BITS)); | |
2687 | ||
2688 | /* unswap as u32 */ | |
2689 | mem_bswap_32(&header->adds_features, | |
2690 | BITS_TO_U32(HEADER_FEAT_BITS)); | |
d327fa43 DA |
2691 | } |
2692 | ||
2693 | if (!test_bit(HEADER_HOSTNAME, header->adds_features)) { | |
2694 | bitmap_zero(header->adds_features, HEADER_FEAT_BITS); | |
2695 | set_bit(HEADER_BUILD_ID, header->adds_features); | |
2696 | } | |
4778d2e4 | 2697 | } |
9e827dd0 | 2698 | |
1c0b04d1 | 2699 | memcpy(&ph->adds_features, &header->adds_features, |
ba21594c | 2700 | sizeof(ph->adds_features)); |
37562eac | 2701 | |
1c0b04d1 ACM |
2702 | ph->data_offset = header->data.offset; |
2703 | ph->data_size = header->data.size; | |
8d541e97 | 2704 | ph->feat_offset = header->data.offset + header->data.size; |
37562eac ACM |
2705 | return 0; |
2706 | } | |
2707 | ||
1c0b04d1 | 2708 | static int perf_file_section__process(struct perf_file_section *section, |
ba21594c | 2709 | struct perf_header *ph, |
da378962 | 2710 | int feat, int fd, void *data) |
37562eac | 2711 | { |
1c0b04d1 | 2712 | if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) { |
9486aa38 | 2713 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " |
1c0b04d1 | 2714 | "%d, continuing...\n", section->offset, feat); |
37562eac ACM |
2715 | return 0; |
2716 | } | |
2717 | ||
b1e5a9be RR |
2718 | if (feat >= HEADER_LAST_FEATURE) { |
2719 | pr_debug("unknown feature %d, continuing...\n", feat); | |
2720 | return 0; | |
2721 | } | |
2722 | ||
f1c67db7 RR |
2723 | if (!feat_ops[feat].process) |
2724 | return 0; | |
37562eac | 2725 | |
3d7eb86b | 2726 | return feat_ops[feat].process(section, ph, fd, data); |
37562eac | 2727 | } |
2ba08250 | 2728 | |
1c0b04d1 | 2729 | static int perf_file_header__read_pipe(struct perf_pipe_file_header *header, |
454c407e TZ |
2730 | struct perf_header *ph, int fd, |
2731 | bool repipe) | |
7c6a1c65 | 2732 | { |
727ebd54 | 2733 | ssize_t ret; |
73323f54 SE |
2734 | |
2735 | ret = readn(fd, header, sizeof(*header)); | |
2736 | if (ret <= 0) | |
2737 | return -1; | |
2738 | ||
114382a0 SE |
2739 | if (check_magic_endian(header->magic, header->size, true, ph) < 0) { |
2740 | pr_debug("endian/magic failed\n"); | |
8dc58101 | 2741 | return -1; |
114382a0 SE |
2742 | } |
2743 | ||
2744 | if (ph->needs_swap) | |
2745 | header->size = bswap_64(header->size); | |
8dc58101 | 2746 | |
1c0b04d1 | 2747 | if (repipe && do_write(STDOUT_FILENO, header, sizeof(*header)) < 0) |
454c407e TZ |
2748 | return -1; |
2749 | ||
8dc58101 TZ |
2750 | return 0; |
2751 | } | |
2752 | ||
d4339569 | 2753 | static int perf_header__read_pipe(struct perf_session *session) |
8dc58101 | 2754 | { |
1c0b04d1 | 2755 | struct perf_header *header = &session->header; |
8dc58101 TZ |
2756 | struct perf_pipe_file_header f_header; |
2757 | ||
cc9784bd JO |
2758 | if (perf_file_header__read_pipe(&f_header, header, |
2759 | perf_data_file__fd(session->file), | |
454c407e | 2760 | session->repipe) < 0) { |
8dc58101 TZ |
2761 | pr_debug("incompatible file format\n"); |
2762 | return -EINVAL; | |
2763 | } | |
2764 | ||
8dc58101 TZ |
2765 | return 0; |
2766 | } | |
2767 | ||
69996df4 SE |
2768 | static int read_attr(int fd, struct perf_header *ph, |
2769 | struct perf_file_attr *f_attr) | |
2770 | { | |
2771 | struct perf_event_attr *attr = &f_attr->attr; | |
2772 | size_t sz, left; | |
2773 | size_t our_sz = sizeof(f_attr->attr); | |
727ebd54 | 2774 | ssize_t ret; |
69996df4 SE |
2775 | |
2776 | memset(f_attr, 0, sizeof(*f_attr)); | |
2777 | ||
2778 | /* read minimal guaranteed structure */ | |
2779 | ret = readn(fd, attr, PERF_ATTR_SIZE_VER0); | |
2780 | if (ret <= 0) { | |
2781 | pr_debug("cannot read %d bytes of header attr\n", | |
2782 | PERF_ATTR_SIZE_VER0); | |
2783 | return -1; | |
2784 | } | |
2785 | ||
2786 | /* on file perf_event_attr size */ | |
2787 | sz = attr->size; | |
114382a0 | 2788 | |
69996df4 SE |
2789 | if (ph->needs_swap) |
2790 | sz = bswap_32(sz); | |
2791 | ||
2792 | if (sz == 0) { | |
2793 | /* assume ABI0 */ | |
2794 | sz = PERF_ATTR_SIZE_VER0; | |
2795 | } else if (sz > our_sz) { | |
2796 | pr_debug("file uses a more recent and unsupported ABI" | |
2797 | " (%zu bytes extra)\n", sz - our_sz); | |
2798 | return -1; | |
2799 | } | |
2800 | /* what we have not yet read and that we know about */ | |
2801 | left = sz - PERF_ATTR_SIZE_VER0; | |
2802 | if (left) { | |
2803 | void *ptr = attr; | |
2804 | ptr += PERF_ATTR_SIZE_VER0; | |
2805 | ||
2806 | ret = readn(fd, ptr, left); | |
2807 | } | |
2808 | /* read perf_file_section, ids are read in caller */ | |
2809 | ret = readn(fd, &f_attr->ids, sizeof(f_attr->ids)); | |
2810 | ||
2811 | return ret <= 0 ? -1 : 0; | |
2812 | } | |
2813 | ||
831394bd NK |
2814 | static int perf_evsel__prepare_tracepoint_event(struct perf_evsel *evsel, |
2815 | struct pevent *pevent) | |
cb9dd49e | 2816 | { |
831394bd | 2817 | struct event_format *event; |
cb9dd49e ACM |
2818 | char bf[128]; |
2819 | ||
831394bd NK |
2820 | /* already prepared */ |
2821 | if (evsel->tp_format) | |
2822 | return 0; | |
2823 | ||
3dce2ce3 NK |
2824 | if (pevent == NULL) { |
2825 | pr_debug("broken or missing trace data\n"); | |
2826 | return -1; | |
2827 | } | |
2828 | ||
831394bd | 2829 | event = pevent_find_event(pevent, evsel->attr.config); |
a7619aef NK |
2830 | if (event == NULL) { |
2831 | pr_debug("cannot find event format for %d\n", (int)evsel->attr.config); | |
cb9dd49e | 2832 | return -1; |
a7619aef | 2833 | } |
cb9dd49e | 2834 | |
831394bd NK |
2835 | if (!evsel->name) { |
2836 | snprintf(bf, sizeof(bf), "%s:%s", event->system, event->name); | |
2837 | evsel->name = strdup(bf); | |
2838 | if (evsel->name == NULL) | |
2839 | return -1; | |
2840 | } | |
cb9dd49e | 2841 | |
fcf65bf1 | 2842 | evsel->tp_format = event; |
cb9dd49e ACM |
2843 | return 0; |
2844 | } | |
2845 | ||
831394bd NK |
2846 | static int perf_evlist__prepare_tracepoint_events(struct perf_evlist *evlist, |
2847 | struct pevent *pevent) | |
cb9dd49e ACM |
2848 | { |
2849 | struct perf_evsel *pos; | |
2850 | ||
e5cadb93 | 2851 | evlist__for_each_entry(evlist, pos) { |
831394bd NK |
2852 | if (pos->attr.type == PERF_TYPE_TRACEPOINT && |
2853 | perf_evsel__prepare_tracepoint_event(pos, pevent)) | |
cb9dd49e ACM |
2854 | return -1; |
2855 | } | |
2856 | ||
2857 | return 0; | |
2858 | } | |
2859 | ||
d4339569 | 2860 | int perf_session__read_header(struct perf_session *session) |
8dc58101 | 2861 | { |
cc9784bd | 2862 | struct perf_data_file *file = session->file; |
1c0b04d1 | 2863 | struct perf_header *header = &session->header; |
ba21594c | 2864 | struct perf_file_header f_header; |
7c6a1c65 PZ |
2865 | struct perf_file_attr f_attr; |
2866 | u64 f_id; | |
7c6a1c65 | 2867 | int nr_attrs, nr_ids, i, j; |
cc9784bd | 2868 | int fd = perf_data_file__fd(file); |
7c6a1c65 | 2869 | |
334fe7a3 | 2870 | session->evlist = perf_evlist__new(); |
a91e5431 ACM |
2871 | if (session->evlist == NULL) |
2872 | return -ENOMEM; | |
2873 | ||
2c07144d | 2874 | session->evlist->env = &header->env; |
4cde998d | 2875 | session->machines.host.env = &header->env; |
cc9784bd | 2876 | if (perf_data_file__is_pipe(file)) |
d4339569 | 2877 | return perf_header__read_pipe(session); |
8dc58101 | 2878 | |
69996df4 | 2879 | if (perf_file_header__read(&f_header, header, fd) < 0) |
4dc0a04b | 2880 | return -EINVAL; |
7c6a1c65 | 2881 | |
b314e5cf NK |
2882 | /* |
2883 | * Sanity check that perf.data was written cleanly; data size is | |
2884 | * initialized to 0 and updated only if the on_exit function is run. | |
2885 | * If data size is still 0 then the file contains only partial | |
2886 | * information. Just warn user and process it as much as it can. | |
2887 | */ | |
2888 | if (f_header.data.size == 0) { | |
2889 | pr_warning("WARNING: The %s file's data size field is 0 which is unexpected.\n" | |
2890 | "Was the 'perf record' command properly terminated?\n", | |
cc9784bd | 2891 | file->path); |
b314e5cf NK |
2892 | } |
2893 | ||
69996df4 | 2894 | nr_attrs = f_header.attrs.size / f_header.attr_size; |
7c6a1c65 PZ |
2895 | lseek(fd, f_header.attrs.offset, SEEK_SET); |
2896 | ||
2897 | for (i = 0; i < nr_attrs; i++) { | |
a91e5431 | 2898 | struct perf_evsel *evsel; |
1c222bce | 2899 | off_t tmp; |
7c6a1c65 | 2900 | |
69996df4 | 2901 | if (read_attr(fd, header, &f_attr) < 0) |
769885f3 | 2902 | goto out_errno; |
ba21594c | 2903 | |
1060ab85 DA |
2904 | if (header->needs_swap) { |
2905 | f_attr.ids.size = bswap_64(f_attr.ids.size); | |
2906 | f_attr.ids.offset = bswap_64(f_attr.ids.offset); | |
eda3913b | 2907 | perf_event__attr_swap(&f_attr.attr); |
1060ab85 | 2908 | } |
eda3913b | 2909 | |
1c222bce | 2910 | tmp = lseek(fd, 0, SEEK_CUR); |
ef503831 | 2911 | evsel = perf_evsel__new(&f_attr.attr); |
7c6a1c65 | 2912 | |
a91e5431 ACM |
2913 | if (evsel == NULL) |
2914 | goto out_delete_evlist; | |
0807d2d8 ACM |
2915 | |
2916 | evsel->needs_swap = header->needs_swap; | |
a91e5431 ACM |
2917 | /* |
2918 | * Do it before so that if perf_evsel__alloc_id fails, this | |
2919 | * entry gets purged too at perf_evlist__delete(). | |
2920 | */ | |
2921 | perf_evlist__add(session->evlist, evsel); | |
7c6a1c65 PZ |
2922 | |
2923 | nr_ids = f_attr.ids.size / sizeof(u64); | |
a91e5431 ACM |
2924 | /* |
2925 | * We don't have the cpu and thread maps on the header, so | |
2926 | * for allocating the perf_sample_id table we fake 1 cpu and | |
2927 | * hattr->ids threads. | |
2928 | */ | |
2929 | if (perf_evsel__alloc_id(evsel, 1, nr_ids)) | |
2930 | goto out_delete_evlist; | |
2931 | ||
7c6a1c65 PZ |
2932 | lseek(fd, f_attr.ids.offset, SEEK_SET); |
2933 | ||
2934 | for (j = 0; j < nr_ids; j++) { | |
1c0b04d1 | 2935 | if (perf_header__getbuffer64(header, fd, &f_id, sizeof(f_id))) |
769885f3 | 2936 | goto out_errno; |
7c6a1c65 | 2937 | |
a91e5431 | 2938 | perf_evlist__id_add(session->evlist, evsel, 0, j, f_id); |
7c6a1c65 | 2939 | } |
11deb1f9 | 2940 | |
7c6a1c65 PZ |
2941 | lseek(fd, tmp, SEEK_SET); |
2942 | } | |
2943 | ||
d04b35f8 ACM |
2944 | symbol_conf.nr_events = nr_attrs; |
2945 | ||
29f5ffd3 | 2946 | perf_header__process_sections(header, fd, &session->tevent, |
fbe96f29 | 2947 | perf_file_section__process); |
4778d2e4 | 2948 | |
831394bd | 2949 | if (perf_evlist__prepare_tracepoint_events(session->evlist, |
29f5ffd3 | 2950 | session->tevent.pevent)) |
cb9dd49e ACM |
2951 | goto out_delete_evlist; |
2952 | ||
4dc0a04b | 2953 | return 0; |
769885f3 ACM |
2954 | out_errno: |
2955 | return -errno; | |
a91e5431 ACM |
2956 | |
2957 | out_delete_evlist: | |
2958 | perf_evlist__delete(session->evlist); | |
2959 | session->evlist = NULL; | |
2960 | return -ENOMEM; | |
7c6a1c65 | 2961 | } |
0d3a5c88 | 2962 | |
45694aa7 | 2963 | int perf_event__synthesize_attr(struct perf_tool *tool, |
f4d83436 | 2964 | struct perf_event_attr *attr, u32 ids, u64 *id, |
743eb868 | 2965 | perf_event__handler_t process) |
2c46dbb5 | 2966 | { |
8115d60c | 2967 | union perf_event *ev; |
2c46dbb5 TZ |
2968 | size_t size; |
2969 | int err; | |
2970 | ||
2971 | size = sizeof(struct perf_event_attr); | |
9ac3e487 | 2972 | size = PERF_ALIGN(size, sizeof(u64)); |
2c46dbb5 TZ |
2973 | size += sizeof(struct perf_event_header); |
2974 | size += ids * sizeof(u64); | |
2975 | ||
2976 | ev = malloc(size); | |
2977 | ||
ce47dc56 CS |
2978 | if (ev == NULL) |
2979 | return -ENOMEM; | |
2980 | ||
2c46dbb5 TZ |
2981 | ev->attr.attr = *attr; |
2982 | memcpy(ev->attr.id, id, ids * sizeof(u64)); | |
2983 | ||
2984 | ev->attr.header.type = PERF_RECORD_HEADER_ATTR; | |
f4d83436 | 2985 | ev->attr.header.size = (u16)size; |
2c46dbb5 | 2986 | |
f4d83436 RR |
2987 | if (ev->attr.header.size == size) |
2988 | err = process(tool, ev, NULL, NULL); | |
2989 | else | |
2990 | err = -E2BIG; | |
2c46dbb5 TZ |
2991 | |
2992 | free(ev); | |
2993 | ||
2994 | return err; | |
2995 | } | |
2996 | ||
a6e52817 JO |
2997 | static struct event_update_event * |
2998 | event_update_event__new(size_t size, u64 type, u64 id) | |
2999 | { | |
3000 | struct event_update_event *ev; | |
3001 | ||
3002 | size += sizeof(*ev); | |
3003 | size = PERF_ALIGN(size, sizeof(u64)); | |
3004 | ||
3005 | ev = zalloc(size); | |
3006 | if (ev) { | |
3007 | ev->header.type = PERF_RECORD_EVENT_UPDATE; | |
3008 | ev->header.size = (u16)size; | |
3009 | ev->type = type; | |
3010 | ev->id = id; | |
3011 | } | |
3012 | return ev; | |
3013 | } | |
3014 | ||
3015 | int | |
3016 | perf_event__synthesize_event_update_unit(struct perf_tool *tool, | |
3017 | struct perf_evsel *evsel, | |
3018 | perf_event__handler_t process) | |
3019 | { | |
3020 | struct event_update_event *ev; | |
3021 | size_t size = strlen(evsel->unit); | |
3022 | int err; | |
3023 | ||
3024 | ev = event_update_event__new(size + 1, PERF_EVENT_UPDATE__UNIT, evsel->id[0]); | |
3025 | if (ev == NULL) | |
3026 | return -ENOMEM; | |
3027 | ||
3028 | strncpy(ev->data, evsel->unit, size); | |
3029 | err = process(tool, (union perf_event *)ev, NULL, NULL); | |
3030 | free(ev); | |
3031 | return err; | |
3032 | } | |
3033 | ||
daeecbc0 JO |
3034 | int |
3035 | perf_event__synthesize_event_update_scale(struct perf_tool *tool, | |
3036 | struct perf_evsel *evsel, | |
3037 | perf_event__handler_t process) | |
3038 | { | |
3039 | struct event_update_event *ev; | |
3040 | struct event_update_event_scale *ev_data; | |
3041 | int err; | |
3042 | ||
3043 | ev = event_update_event__new(sizeof(*ev_data), PERF_EVENT_UPDATE__SCALE, evsel->id[0]); | |
3044 | if (ev == NULL) | |
3045 | return -ENOMEM; | |
3046 | ||
3047 | ev_data = (struct event_update_event_scale *) ev->data; | |
3048 | ev_data->scale = evsel->scale; | |
3049 | err = process(tool, (union perf_event*) ev, NULL, NULL); | |
3050 | free(ev); | |
3051 | return err; | |
3052 | } | |
3053 | ||
802c9048 JO |
3054 | int |
3055 | perf_event__synthesize_event_update_name(struct perf_tool *tool, | |
3056 | struct perf_evsel *evsel, | |
3057 | perf_event__handler_t process) | |
3058 | { | |
3059 | struct event_update_event *ev; | |
3060 | size_t len = strlen(evsel->name); | |
3061 | int err; | |
3062 | ||
3063 | ev = event_update_event__new(len + 1, PERF_EVENT_UPDATE__NAME, evsel->id[0]); | |
3064 | if (ev == NULL) | |
3065 | return -ENOMEM; | |
3066 | ||
3067 | strncpy(ev->data, evsel->name, len); | |
3068 | err = process(tool, (union perf_event*) ev, NULL, NULL); | |
3069 | free(ev); | |
3070 | return err; | |
3071 | } | |
daeecbc0 | 3072 | |
86ebb09f JO |
3073 | int |
3074 | perf_event__synthesize_event_update_cpus(struct perf_tool *tool, | |
3075 | struct perf_evsel *evsel, | |
3076 | perf_event__handler_t process) | |
3077 | { | |
3078 | size_t size = sizeof(struct event_update_event); | |
3079 | struct event_update_event *ev; | |
3080 | int max, err; | |
3081 | u16 type; | |
3082 | ||
3083 | if (!evsel->own_cpus) | |
3084 | return 0; | |
3085 | ||
3086 | ev = cpu_map_data__alloc(evsel->own_cpus, &size, &type, &max); | |
3087 | if (!ev) | |
3088 | return -ENOMEM; | |
3089 | ||
3090 | ev->header.type = PERF_RECORD_EVENT_UPDATE; | |
3091 | ev->header.size = (u16)size; | |
3092 | ev->type = PERF_EVENT_UPDATE__CPUS; | |
3093 | ev->id = evsel->id[0]; | |
3094 | ||
3095 | cpu_map_data__synthesize((struct cpu_map_data *) ev->data, | |
3096 | evsel->own_cpus, | |
3097 | type, max); | |
3098 | ||
3099 | err = process(tool, (union perf_event*) ev, NULL, NULL); | |
3100 | free(ev); | |
3101 | return err; | |
3102 | } | |
3103 | ||
c853f939 JO |
3104 | size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp) |
3105 | { | |
3106 | struct event_update_event *ev = &event->event_update; | |
3107 | struct event_update_event_scale *ev_scale; | |
3108 | struct event_update_event_cpus *ev_cpus; | |
3109 | struct cpu_map *map; | |
3110 | size_t ret; | |
3111 | ||
3112 | ret = fprintf(fp, "\n... id: %" PRIu64 "\n", ev->id); | |
3113 | ||
3114 | switch (ev->type) { | |
3115 | case PERF_EVENT_UPDATE__SCALE: | |
3116 | ev_scale = (struct event_update_event_scale *) ev->data; | |
3117 | ret += fprintf(fp, "... scale: %f\n", ev_scale->scale); | |
3118 | break; | |
3119 | case PERF_EVENT_UPDATE__UNIT: | |
3120 | ret += fprintf(fp, "... unit: %s\n", ev->data); | |
3121 | break; | |
3122 | case PERF_EVENT_UPDATE__NAME: | |
3123 | ret += fprintf(fp, "... name: %s\n", ev->data); | |
3124 | break; | |
3125 | case PERF_EVENT_UPDATE__CPUS: | |
3126 | ev_cpus = (struct event_update_event_cpus *) ev->data; | |
3127 | ret += fprintf(fp, "... "); | |
3128 | ||
3129 | map = cpu_map__new_data(&ev_cpus->cpus); | |
3130 | if (map) | |
3131 | ret += cpu_map__fprintf(map, fp); | |
3132 | else | |
3133 | ret += fprintf(fp, "failed to get cpus\n"); | |
3134 | break; | |
3135 | default: | |
3136 | ret += fprintf(fp, "... unknown type\n"); | |
3137 | break; | |
3138 | } | |
3139 | ||
3140 | return ret; | |
3141 | } | |
86ebb09f | 3142 | |
45694aa7 | 3143 | int perf_event__synthesize_attrs(struct perf_tool *tool, |
d20deb64 | 3144 | struct perf_session *session, |
a91e5431 | 3145 | perf_event__handler_t process) |
2c46dbb5 | 3146 | { |
6606f873 | 3147 | struct perf_evsel *evsel; |
a91e5431 | 3148 | int err = 0; |
2c46dbb5 | 3149 | |
e5cadb93 | 3150 | evlist__for_each_entry(session->evlist, evsel) { |
6606f873 RR |
3151 | err = perf_event__synthesize_attr(tool, &evsel->attr, evsel->ids, |
3152 | evsel->id, process); | |
2c46dbb5 TZ |
3153 | if (err) { |
3154 | pr_debug("failed to create perf header attribute\n"); | |
3155 | return err; | |
3156 | } | |
3157 | } | |
3158 | ||
3159 | return err; | |
3160 | } | |
3161 | ||
47c3d109 AH |
3162 | int perf_event__process_attr(struct perf_tool *tool __maybe_unused, |
3163 | union perf_event *event, | |
10d0f086 | 3164 | struct perf_evlist **pevlist) |
2c46dbb5 | 3165 | { |
f4d83436 | 3166 | u32 i, ids, n_ids; |
a91e5431 | 3167 | struct perf_evsel *evsel; |
10d0f086 | 3168 | struct perf_evlist *evlist = *pevlist; |
2c46dbb5 | 3169 | |
10d0f086 | 3170 | if (evlist == NULL) { |
334fe7a3 | 3171 | *pevlist = evlist = perf_evlist__new(); |
10d0f086 | 3172 | if (evlist == NULL) |
a91e5431 ACM |
3173 | return -ENOMEM; |
3174 | } | |
3175 | ||
ef503831 | 3176 | evsel = perf_evsel__new(&event->attr.attr); |
a91e5431 | 3177 | if (evsel == NULL) |
2c46dbb5 TZ |
3178 | return -ENOMEM; |
3179 | ||
10d0f086 | 3180 | perf_evlist__add(evlist, evsel); |
a91e5431 | 3181 | |
8115d60c ACM |
3182 | ids = event->header.size; |
3183 | ids -= (void *)&event->attr.id - (void *)event; | |
2c46dbb5 | 3184 | n_ids = ids / sizeof(u64); |
a91e5431 ACM |
3185 | /* |
3186 | * We don't have the cpu and thread maps on the header, so | |
3187 | * for allocating the perf_sample_id table we fake 1 cpu and | |
3188 | * hattr->ids threads. | |
3189 | */ | |
3190 | if (perf_evsel__alloc_id(evsel, 1, n_ids)) | |
3191 | return -ENOMEM; | |
2c46dbb5 TZ |
3192 | |
3193 | for (i = 0; i < n_ids; i++) { | |
10d0f086 | 3194 | perf_evlist__id_add(evlist, evsel, 0, i, event->attr.id[i]); |
2c46dbb5 TZ |
3195 | } |
3196 | ||
7e0d6fc9 AH |
3197 | symbol_conf.nr_events = evlist->nr_entries; |
3198 | ||
2c46dbb5 TZ |
3199 | return 0; |
3200 | } | |
cd19a035 | 3201 | |
ffe77725 JO |
3202 | int perf_event__process_event_update(struct perf_tool *tool __maybe_unused, |
3203 | union perf_event *event, | |
3204 | struct perf_evlist **pevlist) | |
3205 | { | |
3206 | struct event_update_event *ev = &event->event_update; | |
daeecbc0 | 3207 | struct event_update_event_scale *ev_scale; |
86ebb09f | 3208 | struct event_update_event_cpus *ev_cpus; |
ffe77725 JO |
3209 | struct perf_evlist *evlist; |
3210 | struct perf_evsel *evsel; | |
86ebb09f | 3211 | struct cpu_map *map; |
ffe77725 JO |
3212 | |
3213 | if (!pevlist || *pevlist == NULL) | |
3214 | return -EINVAL; | |
3215 | ||
3216 | evlist = *pevlist; | |
3217 | ||
3218 | evsel = perf_evlist__id2evsel(evlist, ev->id); | |
3219 | if (evsel == NULL) | |
3220 | return -EINVAL; | |
3221 | ||
a6e52817 JO |
3222 | switch (ev->type) { |
3223 | case PERF_EVENT_UPDATE__UNIT: | |
3224 | evsel->unit = strdup(ev->data); | |
daeecbc0 | 3225 | break; |
802c9048 JO |
3226 | case PERF_EVENT_UPDATE__NAME: |
3227 | evsel->name = strdup(ev->data); | |
3228 | break; | |
daeecbc0 JO |
3229 | case PERF_EVENT_UPDATE__SCALE: |
3230 | ev_scale = (struct event_update_event_scale *) ev->data; | |
3231 | evsel->scale = ev_scale->scale; | |
8434a2ec | 3232 | break; |
86ebb09f JO |
3233 | case PERF_EVENT_UPDATE__CPUS: |
3234 | ev_cpus = (struct event_update_event_cpus *) ev->data; | |
3235 | ||
3236 | map = cpu_map__new_data(&ev_cpus->cpus); | |
3237 | if (map) | |
3238 | evsel->own_cpus = map; | |
3239 | else | |
3240 | pr_err("failed to get event_update cpus\n"); | |
a6e52817 JO |
3241 | default: |
3242 | break; | |
3243 | } | |
3244 | ||
ffe77725 JO |
3245 | return 0; |
3246 | } | |
3247 | ||
45694aa7 | 3248 | int perf_event__synthesize_tracing_data(struct perf_tool *tool, int fd, |
d20deb64 | 3249 | struct perf_evlist *evlist, |
743eb868 | 3250 | perf_event__handler_t process) |
9215545e | 3251 | { |
8115d60c | 3252 | union perf_event ev; |
29208e57 | 3253 | struct tracing_data *tdata; |
9215545e | 3254 | ssize_t size = 0, aligned_size = 0, padding; |
1d037ca1 | 3255 | int err __maybe_unused = 0; |
9215545e | 3256 | |
29208e57 JO |
3257 | /* |
3258 | * We are going to store the size of the data followed | |
3259 | * by the data contents. Since the fd descriptor is a pipe, | |
3260 | * we cannot seek back to store the size of the data once | |
3261 | * we know it. Instead we: | |
3262 | * | |
3263 | * - write the tracing data to the temp file | |
3264 | * - get/write the data size to pipe | |
3265 | * - write the tracing data from the temp file | |
3266 | * to the pipe | |
3267 | */ | |
3268 | tdata = tracing_data_get(&evlist->entries, fd, true); | |
3269 | if (!tdata) | |
3270 | return -1; | |
3271 | ||
9215545e TZ |
3272 | memset(&ev, 0, sizeof(ev)); |
3273 | ||
3274 | ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA; | |
29208e57 | 3275 | size = tdata->size; |
9ac3e487 | 3276 | aligned_size = PERF_ALIGN(size, sizeof(u64)); |
9215545e TZ |
3277 | padding = aligned_size - size; |
3278 | ev.tracing_data.header.size = sizeof(ev.tracing_data); | |
3279 | ev.tracing_data.size = aligned_size; | |
3280 | ||
45694aa7 | 3281 | process(tool, &ev, NULL, NULL); |
9215545e | 3282 | |
29208e57 JO |
3283 | /* |
3284 | * The put function will copy all the tracing data | |
3285 | * stored in temp file to the pipe. | |
3286 | */ | |
3287 | tracing_data_put(tdata); | |
3288 | ||
9215545e TZ |
3289 | write_padded(fd, NULL, 0, padding); |
3290 | ||
3291 | return aligned_size; | |
3292 | } | |
3293 | ||
47c3d109 AH |
3294 | int perf_event__process_tracing_data(struct perf_tool *tool __maybe_unused, |
3295 | union perf_event *event, | |
8115d60c | 3296 | struct perf_session *session) |
9215545e | 3297 | { |
8115d60c | 3298 | ssize_t size_read, padding, size = event->tracing_data.size; |
cc9784bd JO |
3299 | int fd = perf_data_file__fd(session->file); |
3300 | off_t offset = lseek(fd, 0, SEEK_CUR); | |
9215545e TZ |
3301 | char buf[BUFSIZ]; |
3302 | ||
3303 | /* setup for reading amidst mmap */ | |
cc9784bd | 3304 | lseek(fd, offset + sizeof(struct tracing_data_event), |
9215545e TZ |
3305 | SEEK_SET); |
3306 | ||
29f5ffd3 | 3307 | size_read = trace_report(fd, &session->tevent, |
da378962 | 3308 | session->repipe); |
9ac3e487 | 3309 | padding = PERF_ALIGN(size_read, sizeof(u64)) - size_read; |
9215545e | 3310 | |
cc9784bd | 3311 | if (readn(fd, buf, padding) < 0) { |
2caa48a2 ACM |
3312 | pr_err("%s: reading input file", __func__); |
3313 | return -1; | |
3314 | } | |
454c407e TZ |
3315 | if (session->repipe) { |
3316 | int retw = write(STDOUT_FILENO, buf, padding); | |
2caa48a2 ACM |
3317 | if (retw <= 0 || retw != padding) { |
3318 | pr_err("%s: repiping tracing data padding", __func__); | |
3319 | return -1; | |
3320 | } | |
454c407e | 3321 | } |
9215545e | 3322 | |
2caa48a2 ACM |
3323 | if (size_read + padding != size) { |
3324 | pr_err("%s: tracing data size mismatch", __func__); | |
3325 | return -1; | |
3326 | } | |
9215545e | 3327 | |
831394bd | 3328 | perf_evlist__prepare_tracepoint_events(session->evlist, |
29f5ffd3 | 3329 | session->tevent.pevent); |
8b6ee4c5 | 3330 | |
9215545e TZ |
3331 | return size_read + padding; |
3332 | } | |
c7929e47 | 3333 | |
45694aa7 | 3334 | int perf_event__synthesize_build_id(struct perf_tool *tool, |
d20deb64 | 3335 | struct dso *pos, u16 misc, |
8115d60c | 3336 | perf_event__handler_t process, |
743eb868 | 3337 | struct machine *machine) |
c7929e47 | 3338 | { |
8115d60c | 3339 | union perf_event ev; |
c7929e47 TZ |
3340 | size_t len; |
3341 | int err = 0; | |
3342 | ||
3343 | if (!pos->hit) | |
3344 | return err; | |
3345 | ||
3346 | memset(&ev, 0, sizeof(ev)); | |
3347 | ||
3348 | len = pos->long_name_len + 1; | |
9ac3e487 | 3349 | len = PERF_ALIGN(len, NAME_ALIGN); |
c7929e47 TZ |
3350 | memcpy(&ev.build_id.build_id, pos->build_id, sizeof(pos->build_id)); |
3351 | ev.build_id.header.type = PERF_RECORD_HEADER_BUILD_ID; | |
3352 | ev.build_id.header.misc = misc; | |
23346f21 | 3353 | ev.build_id.pid = machine->pid; |
c7929e47 TZ |
3354 | ev.build_id.header.size = sizeof(ev.build_id) + len; |
3355 | memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len); | |
3356 | ||
45694aa7 | 3357 | err = process(tool, &ev, NULL, machine); |
c7929e47 TZ |
3358 | |
3359 | return err; | |
3360 | } | |
3361 | ||
1d037ca1 | 3362 | int perf_event__process_build_id(struct perf_tool *tool __maybe_unused, |
d20deb64 | 3363 | union perf_event *event, |
8115d60c | 3364 | struct perf_session *session) |
c7929e47 | 3365 | { |
8115d60c ACM |
3366 | __event_process_build_id(&event->build_id, |
3367 | event->build_id.filename, | |
a1645ce1 | 3368 | session); |
c7929e47 TZ |
3369 | return 0; |
3370 | } |