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Commit | Line | Data |
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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> | |
0353631a | 11 | #include <linux/compiler.h> |
8671dab9 | 12 | #include <linux/list.h> |
ba21594c | 13 | #include <linux/kernel.h> |
b1e5a9be | 14 | #include <linux/bitops.h> |
7a8ef4c4 ACM |
15 | #include <sys/stat.h> |
16 | #include <sys/types.h> | |
fbe96f29 | 17 | #include <sys/utsname.h> |
7a8ef4c4 | 18 | #include <unistd.h> |
7c6a1c65 | 19 | |
361c99a6 | 20 | #include "evlist.h" |
a91e5431 | 21 | #include "evsel.h" |
7c6a1c65 | 22 | #include "header.h" |
98521b38 | 23 | #include "memswap.h" |
03456a15 FW |
24 | #include "../perf.h" |
25 | #include "trace-event.h" | |
301a0b02 | 26 | #include "session.h" |
8671dab9 | 27 | #include "symbol.h" |
4778d2e4 | 28 | #include "debug.h" |
fbe96f29 | 29 | #include "cpumap.h" |
50a9667c | 30 | #include "pmu.h" |
7dbf4dcf | 31 | #include "vdso.h" |
a1ae5655 | 32 | #include "strbuf.h" |
ebb296c2 | 33 | #include "build-id.h" |
cc9784bd | 34 | #include "data.h" |
720e98b5 JO |
35 | #include <api/fs/fs.h> |
36 | #include "asm/bug.h" | |
7c6a1c65 | 37 | |
3d689ed6 ACM |
38 | #include "sane_ctype.h" |
39 | ||
73323f54 SE |
40 | /* |
41 | * magic2 = "PERFILE2" | |
42 | * must be a numerical value to let the endianness | |
43 | * determine the memory layout. That way we are able | |
44 | * to detect endianness when reading the perf.data file | |
45 | * back. | |
46 | * | |
47 | * we check for legacy (PERFFILE) format. | |
48 | */ | |
49 | static const char *__perf_magic1 = "PERFFILE"; | |
50 | static const u64 __perf_magic2 = 0x32454c4946524550ULL; | |
51 | static const u64 __perf_magic2_sw = 0x50455246494c4532ULL; | |
7c6a1c65 | 52 | |
73323f54 | 53 | #define PERF_MAGIC __perf_magic2 |
7c6a1c65 | 54 | |
d25ed5d9 SA |
55 | const char perf_version_string[] = PERF_VERSION; |
56 | ||
7c6a1c65 | 57 | struct perf_file_attr { |
cdd6c482 | 58 | struct perf_event_attr attr; |
7c6a1c65 PZ |
59 | struct perf_file_section ids; |
60 | }; | |
61 | ||
1c0b04d1 | 62 | void perf_header__set_feat(struct perf_header *header, int feat) |
8d06367f | 63 | { |
1c0b04d1 | 64 | set_bit(feat, header->adds_features); |
8d06367f ACM |
65 | } |
66 | ||
1c0b04d1 | 67 | void perf_header__clear_feat(struct perf_header *header, int feat) |
baa2f6ce | 68 | { |
1c0b04d1 | 69 | clear_bit(feat, header->adds_features); |
baa2f6ce ACM |
70 | } |
71 | ||
1c0b04d1 | 72 | bool perf_header__has_feat(const struct perf_header *header, int feat) |
8d06367f | 73 | { |
1c0b04d1 | 74 | return test_bit(feat, header->adds_features); |
8d06367f ACM |
75 | } |
76 | ||
3726cc75 | 77 | static int do_write(int fd, const void *buf, size_t size) |
7c6a1c65 PZ |
78 | { |
79 | while (size) { | |
80 | int ret = write(fd, buf, size); | |
81 | ||
82 | if (ret < 0) | |
d5eed904 | 83 | return -errno; |
7c6a1c65 PZ |
84 | |
85 | size -= ret; | |
86 | buf += ret; | |
87 | } | |
3726cc75 ACM |
88 | |
89 | return 0; | |
7c6a1c65 PZ |
90 | } |
91 | ||
e195fac8 | 92 | int write_padded(int fd, const void *bf, size_t count, size_t count_aligned) |
f92cb24c ACM |
93 | { |
94 | static const char zero_buf[NAME_ALIGN]; | |
95 | int err = do_write(fd, bf, count); | |
96 | ||
97 | if (!err) | |
98 | err = do_write(fd, zero_buf, count_aligned - count); | |
99 | ||
100 | return err; | |
101 | } | |
102 | ||
2bb00d2f KL |
103 | #define string_size(str) \ |
104 | (PERF_ALIGN((strlen(str) + 1), NAME_ALIGN) + sizeof(u32)) | |
105 | ||
fbe96f29 SE |
106 | static int do_write_string(int fd, const char *str) |
107 | { | |
108 | u32 len, olen; | |
109 | int ret; | |
110 | ||
111 | olen = strlen(str) + 1; | |
9ac3e487 | 112 | len = PERF_ALIGN(olen, NAME_ALIGN); |
fbe96f29 SE |
113 | |
114 | /* write len, incl. \0 */ | |
115 | ret = do_write(fd, &len, sizeof(len)); | |
116 | if (ret < 0) | |
117 | return ret; | |
118 | ||
119 | return write_padded(fd, str, olen, len); | |
120 | } | |
121 | ||
122 | static char *do_read_string(int fd, struct perf_header *ph) | |
123 | { | |
124 | ssize_t sz, ret; | |
125 | u32 len; | |
126 | char *buf; | |
127 | ||
5323f60c | 128 | sz = readn(fd, &len, sizeof(len)); |
fbe96f29 SE |
129 | if (sz < (ssize_t)sizeof(len)) |
130 | return NULL; | |
131 | ||
132 | if (ph->needs_swap) | |
133 | len = bswap_32(len); | |
134 | ||
135 | buf = malloc(len); | |
136 | if (!buf) | |
137 | return NULL; | |
138 | ||
5323f60c | 139 | ret = readn(fd, buf, len); |
fbe96f29 SE |
140 | if (ret == (ssize_t)len) { |
141 | /* | |
142 | * strings are padded by zeroes | |
143 | * thus the actual strlen of buf | |
144 | * may be less than len | |
145 | */ | |
146 | return buf; | |
147 | } | |
148 | ||
149 | free(buf); | |
150 | return NULL; | |
151 | } | |
152 | ||
1d037ca1 | 153 | static int write_tracing_data(int fd, struct perf_header *h __maybe_unused, |
fbe96f29 SE |
154 | struct perf_evlist *evlist) |
155 | { | |
156 | return read_tracing_data(fd, &evlist->entries); | |
157 | } | |
158 | ||
159 | ||
160 | static int write_build_id(int fd, struct perf_header *h, | |
1d037ca1 | 161 | struct perf_evlist *evlist __maybe_unused) |
fbe96f29 SE |
162 | { |
163 | struct perf_session *session; | |
164 | int err; | |
165 | ||
166 | session = container_of(h, struct perf_session, header); | |
167 | ||
e20960c0 RR |
168 | if (!perf_session__read_build_ids(session, true)) |
169 | return -1; | |
170 | ||
714c9c4a | 171 | err = perf_session__write_buildid_table(session, fd); |
fbe96f29 SE |
172 | if (err < 0) { |
173 | pr_debug("failed to write buildid table\n"); | |
174 | return err; | |
175 | } | |
73c5d224 | 176 | perf_session__cache_build_ids(session); |
fbe96f29 SE |
177 | |
178 | return 0; | |
179 | } | |
180 | ||
1d037ca1 IT |
181 | static int write_hostname(int fd, struct perf_header *h __maybe_unused, |
182 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
183 | { |
184 | struct utsname uts; | |
185 | int ret; | |
186 | ||
187 | ret = uname(&uts); | |
188 | if (ret < 0) | |
189 | return -1; | |
190 | ||
191 | return do_write_string(fd, uts.nodename); | |
192 | } | |
193 | ||
1d037ca1 IT |
194 | static int write_osrelease(int fd, struct perf_header *h __maybe_unused, |
195 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
196 | { |
197 | struct utsname uts; | |
198 | int ret; | |
199 | ||
200 | ret = uname(&uts); | |
201 | if (ret < 0) | |
202 | return -1; | |
203 | ||
204 | return do_write_string(fd, uts.release); | |
205 | } | |
206 | ||
1d037ca1 IT |
207 | static int write_arch(int fd, struct perf_header *h __maybe_unused, |
208 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
209 | { |
210 | struct utsname uts; | |
211 | int ret; | |
212 | ||
213 | ret = uname(&uts); | |
214 | if (ret < 0) | |
215 | return -1; | |
216 | ||
217 | return do_write_string(fd, uts.machine); | |
218 | } | |
219 | ||
1d037ca1 IT |
220 | static int write_version(int fd, struct perf_header *h __maybe_unused, |
221 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
222 | { |
223 | return do_write_string(fd, perf_version_string); | |
224 | } | |
225 | ||
493c3031 | 226 | static int __write_cpudesc(int fd, const char *cpuinfo_proc) |
fbe96f29 | 227 | { |
fbe96f29 SE |
228 | FILE *file; |
229 | char *buf = NULL; | |
230 | char *s, *p; | |
493c3031 | 231 | const char *search = cpuinfo_proc; |
fbe96f29 SE |
232 | size_t len = 0; |
233 | int ret = -1; | |
234 | ||
235 | if (!search) | |
236 | return -1; | |
237 | ||
238 | file = fopen("/proc/cpuinfo", "r"); | |
239 | if (!file) | |
240 | return -1; | |
241 | ||
242 | while (getline(&buf, &len, file) > 0) { | |
243 | ret = strncmp(buf, search, strlen(search)); | |
244 | if (!ret) | |
245 | break; | |
246 | } | |
247 | ||
ed307758 WN |
248 | if (ret) { |
249 | ret = -1; | |
fbe96f29 | 250 | goto done; |
ed307758 | 251 | } |
fbe96f29 SE |
252 | |
253 | s = buf; | |
254 | ||
255 | p = strchr(buf, ':'); | |
256 | if (p && *(p+1) == ' ' && *(p+2)) | |
257 | s = p + 2; | |
258 | p = strchr(s, '\n'); | |
259 | if (p) | |
260 | *p = '\0'; | |
261 | ||
262 | /* squash extra space characters (branding string) */ | |
263 | p = s; | |
264 | while (*p) { | |
265 | if (isspace(*p)) { | |
266 | char *r = p + 1; | |
267 | char *q = r; | |
268 | *p = ' '; | |
269 | while (*q && isspace(*q)) | |
270 | q++; | |
271 | if (q != (p+1)) | |
272 | while ((*r++ = *q++)); | |
273 | } | |
274 | p++; | |
275 | } | |
276 | ret = do_write_string(fd, s); | |
277 | done: | |
278 | free(buf); | |
279 | fclose(file); | |
280 | return ret; | |
281 | } | |
282 | ||
493c3031 WN |
283 | static int write_cpudesc(int fd, struct perf_header *h __maybe_unused, |
284 | struct perf_evlist *evlist __maybe_unused) | |
285 | { | |
286 | #ifndef CPUINFO_PROC | |
287 | #define CPUINFO_PROC {"model name", } | |
288 | #endif | |
289 | const char *cpuinfo_procs[] = CPUINFO_PROC; | |
290 | unsigned int i; | |
291 | ||
292 | for (i = 0; i < ARRAY_SIZE(cpuinfo_procs); i++) { | |
293 | int ret; | |
294 | ret = __write_cpudesc(fd, cpuinfo_procs[i]); | |
295 | if (ret >= 0) | |
296 | return ret; | |
297 | } | |
298 | return -1; | |
299 | } | |
300 | ||
301 | ||
1d037ca1 IT |
302 | static int write_nrcpus(int fd, struct perf_header *h __maybe_unused, |
303 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
304 | { |
305 | long nr; | |
306 | u32 nrc, nra; | |
307 | int ret; | |
308 | ||
da8a58b5 | 309 | nrc = cpu__max_present_cpu(); |
fbe96f29 SE |
310 | |
311 | nr = sysconf(_SC_NPROCESSORS_ONLN); | |
312 | if (nr < 0) | |
313 | return -1; | |
314 | ||
315 | nra = (u32)(nr & UINT_MAX); | |
316 | ||
317 | ret = do_write(fd, &nrc, sizeof(nrc)); | |
318 | if (ret < 0) | |
319 | return ret; | |
320 | ||
321 | return do_write(fd, &nra, sizeof(nra)); | |
322 | } | |
323 | ||
1d037ca1 | 324 | static int write_event_desc(int fd, struct perf_header *h __maybe_unused, |
fbe96f29 SE |
325 | struct perf_evlist *evlist) |
326 | { | |
6606f873 | 327 | struct perf_evsel *evsel; |
74ba9e11 | 328 | u32 nre, nri, sz; |
fbe96f29 SE |
329 | int ret; |
330 | ||
74ba9e11 | 331 | nre = evlist->nr_entries; |
fbe96f29 SE |
332 | |
333 | /* | |
334 | * write number of events | |
335 | */ | |
336 | ret = do_write(fd, &nre, sizeof(nre)); | |
337 | if (ret < 0) | |
338 | return ret; | |
339 | ||
340 | /* | |
341 | * size of perf_event_attr struct | |
342 | */ | |
6606f873 | 343 | sz = (u32)sizeof(evsel->attr); |
fbe96f29 SE |
344 | ret = do_write(fd, &sz, sizeof(sz)); |
345 | if (ret < 0) | |
346 | return ret; | |
347 | ||
e5cadb93 | 348 | evlist__for_each_entry(evlist, evsel) { |
6606f873 | 349 | ret = do_write(fd, &evsel->attr, sz); |
fbe96f29 SE |
350 | if (ret < 0) |
351 | return ret; | |
352 | /* | |
353 | * write number of unique id per event | |
354 | * there is one id per instance of an event | |
355 | * | |
356 | * copy into an nri to be independent of the | |
357 | * type of ids, | |
358 | */ | |
6606f873 | 359 | nri = evsel->ids; |
fbe96f29 SE |
360 | ret = do_write(fd, &nri, sizeof(nri)); |
361 | if (ret < 0) | |
362 | return ret; | |
363 | ||
364 | /* | |
365 | * write event string as passed on cmdline | |
366 | */ | |
6606f873 | 367 | ret = do_write_string(fd, perf_evsel__name(evsel)); |
fbe96f29 SE |
368 | if (ret < 0) |
369 | return ret; | |
370 | /* | |
371 | * write unique ids for this event | |
372 | */ | |
6606f873 | 373 | ret = do_write(fd, evsel->id, evsel->ids * sizeof(u64)); |
fbe96f29 SE |
374 | if (ret < 0) |
375 | return ret; | |
376 | } | |
377 | return 0; | |
378 | } | |
379 | ||
1d037ca1 IT |
380 | static int write_cmdline(int fd, struct perf_header *h __maybe_unused, |
381 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
382 | { |
383 | char buf[MAXPATHLEN]; | |
b6998692 ACM |
384 | u32 n; |
385 | int i, ret; | |
fbe96f29 | 386 | |
55f77128 TR |
387 | /* actual path to perf binary */ |
388 | ret = readlink("/proc/self/exe", buf, sizeof(buf) - 1); | |
fbe96f29 SE |
389 | if (ret <= 0) |
390 | return -1; | |
391 | ||
392 | /* readlink() does not add null termination */ | |
393 | buf[ret] = '\0'; | |
394 | ||
395 | /* account for binary path */ | |
b6998692 | 396 | n = perf_env.nr_cmdline + 1; |
fbe96f29 SE |
397 | |
398 | ret = do_write(fd, &n, sizeof(n)); | |
399 | if (ret < 0) | |
400 | return ret; | |
401 | ||
402 | ret = do_write_string(fd, buf); | |
403 | if (ret < 0) | |
404 | return ret; | |
405 | ||
b6998692 ACM |
406 | for (i = 0 ; i < perf_env.nr_cmdline; i++) { |
407 | ret = do_write_string(fd, perf_env.cmdline_argv[i]); | |
fbe96f29 SE |
408 | if (ret < 0) |
409 | return ret; | |
410 | } | |
411 | return 0; | |
412 | } | |
413 | ||
414 | #define CORE_SIB_FMT \ | |
415 | "/sys/devices/system/cpu/cpu%d/topology/core_siblings_list" | |
416 | #define THRD_SIB_FMT \ | |
417 | "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list" | |
418 | ||
419 | struct cpu_topo { | |
2bb00d2f | 420 | u32 cpu_nr; |
fbe96f29 SE |
421 | u32 core_sib; |
422 | u32 thread_sib; | |
423 | char **core_siblings; | |
424 | char **thread_siblings; | |
425 | }; | |
426 | ||
427 | static int build_cpu_topo(struct cpu_topo *tp, int cpu) | |
428 | { | |
429 | FILE *fp; | |
430 | char filename[MAXPATHLEN]; | |
431 | char *buf = NULL, *p; | |
432 | size_t len = 0; | |
c5885749 | 433 | ssize_t sret; |
fbe96f29 SE |
434 | u32 i = 0; |
435 | int ret = -1; | |
436 | ||
437 | sprintf(filename, CORE_SIB_FMT, cpu); | |
438 | fp = fopen(filename, "r"); | |
439 | if (!fp) | |
c5885749 | 440 | goto try_threads; |
fbe96f29 | 441 | |
c5885749 | 442 | sret = getline(&buf, &len, fp); |
fbe96f29 | 443 | fclose(fp); |
c5885749 SE |
444 | if (sret <= 0) |
445 | goto try_threads; | |
fbe96f29 SE |
446 | |
447 | p = strchr(buf, '\n'); | |
448 | if (p) | |
449 | *p = '\0'; | |
450 | ||
451 | for (i = 0; i < tp->core_sib; i++) { | |
452 | if (!strcmp(buf, tp->core_siblings[i])) | |
453 | break; | |
454 | } | |
455 | if (i == tp->core_sib) { | |
456 | tp->core_siblings[i] = buf; | |
457 | tp->core_sib++; | |
458 | buf = NULL; | |
459 | len = 0; | |
460 | } | |
c5885749 | 461 | ret = 0; |
fbe96f29 | 462 | |
c5885749 | 463 | try_threads: |
fbe96f29 SE |
464 | sprintf(filename, THRD_SIB_FMT, cpu); |
465 | fp = fopen(filename, "r"); | |
466 | if (!fp) | |
467 | goto done; | |
468 | ||
469 | if (getline(&buf, &len, fp) <= 0) | |
470 | goto done; | |
471 | ||
472 | p = strchr(buf, '\n'); | |
473 | if (p) | |
474 | *p = '\0'; | |
475 | ||
476 | for (i = 0; i < tp->thread_sib; i++) { | |
477 | if (!strcmp(buf, tp->thread_siblings[i])) | |
478 | break; | |
479 | } | |
480 | if (i == tp->thread_sib) { | |
481 | tp->thread_siblings[i] = buf; | |
482 | tp->thread_sib++; | |
483 | buf = NULL; | |
484 | } | |
485 | ret = 0; | |
486 | done: | |
487 | if(fp) | |
488 | fclose(fp); | |
489 | free(buf); | |
490 | return ret; | |
491 | } | |
492 | ||
493 | static void free_cpu_topo(struct cpu_topo *tp) | |
494 | { | |
495 | u32 i; | |
496 | ||
497 | if (!tp) | |
498 | return; | |
499 | ||
500 | for (i = 0 ; i < tp->core_sib; i++) | |
74cf249d | 501 | zfree(&tp->core_siblings[i]); |
fbe96f29 SE |
502 | |
503 | for (i = 0 ; i < tp->thread_sib; i++) | |
74cf249d | 504 | zfree(&tp->thread_siblings[i]); |
fbe96f29 SE |
505 | |
506 | free(tp); | |
507 | } | |
508 | ||
509 | static struct cpu_topo *build_cpu_topology(void) | |
510 | { | |
43db2843 | 511 | struct cpu_topo *tp = NULL; |
fbe96f29 SE |
512 | void *addr; |
513 | u32 nr, i; | |
aa36ddd7 | 514 | size_t sz; |
fbe96f29 SE |
515 | long ncpus; |
516 | int ret = -1; | |
43db2843 | 517 | struct cpu_map *map; |
fbe96f29 | 518 | |
da8a58b5 | 519 | ncpus = cpu__max_present_cpu(); |
fbe96f29 | 520 | |
43db2843 JS |
521 | /* build online CPU map */ |
522 | map = cpu_map__new(NULL); | |
523 | if (map == NULL) { | |
524 | pr_debug("failed to get system cpumap\n"); | |
525 | return NULL; | |
526 | } | |
527 | ||
fbe96f29 SE |
528 | nr = (u32)(ncpus & UINT_MAX); |
529 | ||
530 | sz = nr * sizeof(char *); | |
aa36ddd7 | 531 | addr = calloc(1, sizeof(*tp) + 2 * sz); |
fbe96f29 | 532 | if (!addr) |
43db2843 | 533 | goto out_free; |
fbe96f29 SE |
534 | |
535 | tp = addr; | |
2bb00d2f | 536 | tp->cpu_nr = nr; |
fbe96f29 SE |
537 | addr += sizeof(*tp); |
538 | tp->core_siblings = addr; | |
539 | addr += sz; | |
540 | tp->thread_siblings = addr; | |
541 | ||
542 | for (i = 0; i < nr; i++) { | |
43db2843 JS |
543 | if (!cpu_map__has(map, i)) |
544 | continue; | |
545 | ||
fbe96f29 SE |
546 | ret = build_cpu_topo(tp, i); |
547 | if (ret < 0) | |
548 | break; | |
549 | } | |
43db2843 JS |
550 | |
551 | out_free: | |
552 | cpu_map__put(map); | |
fbe96f29 SE |
553 | if (ret) { |
554 | free_cpu_topo(tp); | |
555 | tp = NULL; | |
556 | } | |
557 | return tp; | |
558 | } | |
559 | ||
1d037ca1 IT |
560 | static int write_cpu_topology(int fd, struct perf_header *h __maybe_unused, |
561 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
562 | { |
563 | struct cpu_topo *tp; | |
564 | u32 i; | |
aa36ddd7 | 565 | int ret, j; |
fbe96f29 SE |
566 | |
567 | tp = build_cpu_topology(); | |
568 | if (!tp) | |
569 | return -1; | |
570 | ||
571 | ret = do_write(fd, &tp->core_sib, sizeof(tp->core_sib)); | |
572 | if (ret < 0) | |
573 | goto done; | |
574 | ||
575 | for (i = 0; i < tp->core_sib; i++) { | |
576 | ret = do_write_string(fd, tp->core_siblings[i]); | |
577 | if (ret < 0) | |
578 | goto done; | |
579 | } | |
580 | ret = do_write(fd, &tp->thread_sib, sizeof(tp->thread_sib)); | |
581 | if (ret < 0) | |
582 | goto done; | |
583 | ||
584 | for (i = 0; i < tp->thread_sib; i++) { | |
585 | ret = do_write_string(fd, tp->thread_siblings[i]); | |
586 | if (ret < 0) | |
587 | break; | |
588 | } | |
2bb00d2f | 589 | |
aa36ddd7 ACM |
590 | ret = perf_env__read_cpu_topology_map(&perf_env); |
591 | if (ret < 0) | |
592 | goto done; | |
593 | ||
594 | for (j = 0; j < perf_env.nr_cpus_avail; j++) { | |
595 | ret = do_write(fd, &perf_env.cpu[j].core_id, | |
596 | sizeof(perf_env.cpu[j].core_id)); | |
2bb00d2f KL |
597 | if (ret < 0) |
598 | return ret; | |
aa36ddd7 ACM |
599 | ret = do_write(fd, &perf_env.cpu[j].socket_id, |
600 | sizeof(perf_env.cpu[j].socket_id)); | |
2bb00d2f KL |
601 | if (ret < 0) |
602 | return ret; | |
603 | } | |
fbe96f29 SE |
604 | done: |
605 | free_cpu_topo(tp); | |
606 | return ret; | |
607 | } | |
608 | ||
609 | ||
610 | ||
1d037ca1 IT |
611 | static int write_total_mem(int fd, struct perf_header *h __maybe_unused, |
612 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
613 | { |
614 | char *buf = NULL; | |
615 | FILE *fp; | |
616 | size_t len = 0; | |
617 | int ret = -1, n; | |
618 | uint64_t mem; | |
619 | ||
620 | fp = fopen("/proc/meminfo", "r"); | |
621 | if (!fp) | |
622 | return -1; | |
623 | ||
624 | while (getline(&buf, &len, fp) > 0) { | |
625 | ret = strncmp(buf, "MemTotal:", 9); | |
626 | if (!ret) | |
627 | break; | |
628 | } | |
629 | if (!ret) { | |
630 | n = sscanf(buf, "%*s %"PRIu64, &mem); | |
631 | if (n == 1) | |
632 | ret = do_write(fd, &mem, sizeof(mem)); | |
ed307758 WN |
633 | } else |
634 | ret = -1; | |
fbe96f29 SE |
635 | free(buf); |
636 | fclose(fp); | |
637 | return ret; | |
638 | } | |
639 | ||
640 | static int write_topo_node(int fd, int node) | |
641 | { | |
642 | char str[MAXPATHLEN]; | |
643 | char field[32]; | |
644 | char *buf = NULL, *p; | |
645 | size_t len = 0; | |
646 | FILE *fp; | |
647 | u64 mem_total, mem_free, mem; | |
648 | int ret = -1; | |
649 | ||
650 | sprintf(str, "/sys/devices/system/node/node%d/meminfo", node); | |
651 | fp = fopen(str, "r"); | |
652 | if (!fp) | |
653 | return -1; | |
654 | ||
655 | while (getline(&buf, &len, fp) > 0) { | |
656 | /* skip over invalid lines */ | |
657 | if (!strchr(buf, ':')) | |
658 | continue; | |
a761a2d8 | 659 | if (sscanf(buf, "%*s %*d %31s %"PRIu64, field, &mem) != 2) |
fbe96f29 SE |
660 | goto done; |
661 | if (!strcmp(field, "MemTotal:")) | |
662 | mem_total = mem; | |
663 | if (!strcmp(field, "MemFree:")) | |
664 | mem_free = mem; | |
665 | } | |
666 | ||
667 | fclose(fp); | |
5809fde0 | 668 | fp = NULL; |
fbe96f29 SE |
669 | |
670 | ret = do_write(fd, &mem_total, sizeof(u64)); | |
671 | if (ret) | |
672 | goto done; | |
673 | ||
674 | ret = do_write(fd, &mem_free, sizeof(u64)); | |
675 | if (ret) | |
676 | goto done; | |
677 | ||
678 | ret = -1; | |
679 | sprintf(str, "/sys/devices/system/node/node%d/cpulist", node); | |
680 | ||
681 | fp = fopen(str, "r"); | |
682 | if (!fp) | |
683 | goto done; | |
684 | ||
685 | if (getline(&buf, &len, fp) <= 0) | |
686 | goto done; | |
687 | ||
688 | p = strchr(buf, '\n'); | |
689 | if (p) | |
690 | *p = '\0'; | |
691 | ||
692 | ret = do_write_string(fd, buf); | |
693 | done: | |
694 | free(buf); | |
5809fde0 TJ |
695 | if (fp) |
696 | fclose(fp); | |
fbe96f29 SE |
697 | return ret; |
698 | } | |
699 | ||
1d037ca1 IT |
700 | static int write_numa_topology(int fd, struct perf_header *h __maybe_unused, |
701 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
702 | { |
703 | char *buf = NULL; | |
704 | size_t len = 0; | |
705 | FILE *fp; | |
706 | struct cpu_map *node_map = NULL; | |
707 | char *c; | |
708 | u32 nr, i, j; | |
709 | int ret = -1; | |
710 | ||
711 | fp = fopen("/sys/devices/system/node/online", "r"); | |
712 | if (!fp) | |
713 | return -1; | |
714 | ||
715 | if (getline(&buf, &len, fp) <= 0) | |
716 | goto done; | |
717 | ||
718 | c = strchr(buf, '\n'); | |
719 | if (c) | |
720 | *c = '\0'; | |
721 | ||
722 | node_map = cpu_map__new(buf); | |
723 | if (!node_map) | |
724 | goto done; | |
725 | ||
726 | nr = (u32)node_map->nr; | |
727 | ||
728 | ret = do_write(fd, &nr, sizeof(nr)); | |
729 | if (ret < 0) | |
730 | goto done; | |
731 | ||
732 | for (i = 0; i < nr; i++) { | |
733 | j = (u32)node_map->map[i]; | |
734 | ret = do_write(fd, &j, sizeof(j)); | |
735 | if (ret < 0) | |
736 | break; | |
737 | ||
738 | ret = write_topo_node(fd, i); | |
739 | if (ret < 0) | |
740 | break; | |
741 | } | |
742 | done: | |
743 | free(buf); | |
744 | fclose(fp); | |
5191d887 | 745 | cpu_map__put(node_map); |
fbe96f29 SE |
746 | return ret; |
747 | } | |
748 | ||
50a9667c RR |
749 | /* |
750 | * File format: | |
751 | * | |
752 | * struct pmu_mappings { | |
753 | * u32 pmu_num; | |
754 | * struct pmu_map { | |
755 | * u32 type; | |
756 | * char name[]; | |
757 | * }[pmu_num]; | |
758 | * }; | |
759 | */ | |
760 | ||
1d037ca1 IT |
761 | static int write_pmu_mappings(int fd, struct perf_header *h __maybe_unused, |
762 | struct perf_evlist *evlist __maybe_unused) | |
50a9667c RR |
763 | { |
764 | struct perf_pmu *pmu = NULL; | |
765 | off_t offset = lseek(fd, 0, SEEK_CUR); | |
766 | __u32 pmu_num = 0; | |
5323f60c | 767 | int ret; |
50a9667c RR |
768 | |
769 | /* write real pmu_num later */ | |
5323f60c NK |
770 | ret = do_write(fd, &pmu_num, sizeof(pmu_num)); |
771 | if (ret < 0) | |
772 | return ret; | |
50a9667c RR |
773 | |
774 | while ((pmu = perf_pmu__scan(pmu))) { | |
775 | if (!pmu->name) | |
776 | continue; | |
777 | pmu_num++; | |
5323f60c NK |
778 | |
779 | ret = do_write(fd, &pmu->type, sizeof(pmu->type)); | |
780 | if (ret < 0) | |
781 | return ret; | |
782 | ||
783 | ret = do_write_string(fd, pmu->name); | |
784 | if (ret < 0) | |
785 | return ret; | |
50a9667c RR |
786 | } |
787 | ||
788 | if (pwrite(fd, &pmu_num, sizeof(pmu_num), offset) != sizeof(pmu_num)) { | |
789 | /* discard all */ | |
790 | lseek(fd, offset, SEEK_SET); | |
791 | return -1; | |
792 | } | |
793 | ||
794 | return 0; | |
795 | } | |
796 | ||
a8bb559b NK |
797 | /* |
798 | * File format: | |
799 | * | |
800 | * struct group_descs { | |
801 | * u32 nr_groups; | |
802 | * struct group_desc { | |
803 | * char name[]; | |
804 | * u32 leader_idx; | |
805 | * u32 nr_members; | |
806 | * }[nr_groups]; | |
807 | * }; | |
808 | */ | |
809 | static int write_group_desc(int fd, struct perf_header *h __maybe_unused, | |
810 | struct perf_evlist *evlist) | |
811 | { | |
812 | u32 nr_groups = evlist->nr_groups; | |
813 | struct perf_evsel *evsel; | |
814 | int ret; | |
815 | ||
816 | ret = do_write(fd, &nr_groups, sizeof(nr_groups)); | |
817 | if (ret < 0) | |
818 | return ret; | |
819 | ||
e5cadb93 | 820 | evlist__for_each_entry(evlist, evsel) { |
a8bb559b NK |
821 | if (perf_evsel__is_group_leader(evsel) && |
822 | evsel->nr_members > 1) { | |
823 | const char *name = evsel->group_name ?: "{anon_group}"; | |
824 | u32 leader_idx = evsel->idx; | |
825 | u32 nr_members = evsel->nr_members; | |
826 | ||
827 | ret = do_write_string(fd, name); | |
828 | if (ret < 0) | |
829 | return ret; | |
830 | ||
831 | ret = do_write(fd, &leader_idx, sizeof(leader_idx)); | |
832 | if (ret < 0) | |
833 | return ret; | |
834 | ||
835 | ret = do_write(fd, &nr_members, sizeof(nr_members)); | |
836 | if (ret < 0) | |
837 | return ret; | |
838 | } | |
839 | } | |
840 | return 0; | |
841 | } | |
842 | ||
fbe96f29 SE |
843 | /* |
844 | * default get_cpuid(): nothing gets recorded | |
7a759cd8 | 845 | * actual implementation must be in arch/$(SRCARCH)/util/header.c |
fbe96f29 | 846 | */ |
11d8f870 | 847 | int __weak get_cpuid(char *buffer __maybe_unused, size_t sz __maybe_unused) |
fbe96f29 SE |
848 | { |
849 | return -1; | |
850 | } | |
851 | ||
1d037ca1 IT |
852 | static int write_cpuid(int fd, struct perf_header *h __maybe_unused, |
853 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
854 | { |
855 | char buffer[64]; | |
856 | int ret; | |
857 | ||
858 | ret = get_cpuid(buffer, sizeof(buffer)); | |
859 | if (!ret) | |
860 | goto write_it; | |
861 | ||
862 | return -1; | |
863 | write_it: | |
864 | return do_write_string(fd, buffer); | |
865 | } | |
866 | ||
1d037ca1 IT |
867 | static int write_branch_stack(int fd __maybe_unused, |
868 | struct perf_header *h __maybe_unused, | |
869 | struct perf_evlist *evlist __maybe_unused) | |
330aa675 SE |
870 | { |
871 | return 0; | |
872 | } | |
873 | ||
99fa2984 | 874 | static int write_auxtrace(int fd, struct perf_header *h, |
4025ea40 AH |
875 | struct perf_evlist *evlist __maybe_unused) |
876 | { | |
99fa2984 AH |
877 | struct perf_session *session; |
878 | int err; | |
879 | ||
880 | session = container_of(h, struct perf_session, header); | |
881 | ||
882 | err = auxtrace_index__write(fd, &session->auxtrace_index); | |
883 | if (err < 0) | |
884 | pr_err("Failed to write auxtrace index\n"); | |
885 | return err; | |
4025ea40 AH |
886 | } |
887 | ||
720e98b5 JO |
888 | static int cpu_cache_level__sort(const void *a, const void *b) |
889 | { | |
890 | struct cpu_cache_level *cache_a = (struct cpu_cache_level *)a; | |
891 | struct cpu_cache_level *cache_b = (struct cpu_cache_level *)b; | |
892 | ||
893 | return cache_a->level - cache_b->level; | |
894 | } | |
895 | ||
896 | static bool cpu_cache_level__cmp(struct cpu_cache_level *a, struct cpu_cache_level *b) | |
897 | { | |
898 | if (a->level != b->level) | |
899 | return false; | |
900 | ||
901 | if (a->line_size != b->line_size) | |
902 | return false; | |
903 | ||
904 | if (a->sets != b->sets) | |
905 | return false; | |
906 | ||
907 | if (a->ways != b->ways) | |
908 | return false; | |
909 | ||
910 | if (strcmp(a->type, b->type)) | |
911 | return false; | |
912 | ||
913 | if (strcmp(a->size, b->size)) | |
914 | return false; | |
915 | ||
916 | if (strcmp(a->map, b->map)) | |
917 | return false; | |
918 | ||
919 | return true; | |
920 | } | |
921 | ||
922 | static int cpu_cache_level__read(struct cpu_cache_level *cache, u32 cpu, u16 level) | |
923 | { | |
924 | char path[PATH_MAX], file[PATH_MAX]; | |
925 | struct stat st; | |
926 | size_t len; | |
927 | ||
928 | scnprintf(path, PATH_MAX, "devices/system/cpu/cpu%d/cache/index%d/", cpu, level); | |
929 | scnprintf(file, PATH_MAX, "%s/%s", sysfs__mountpoint(), path); | |
930 | ||
931 | if (stat(file, &st)) | |
932 | return 1; | |
933 | ||
934 | scnprintf(file, PATH_MAX, "%s/level", path); | |
935 | if (sysfs__read_int(file, (int *) &cache->level)) | |
936 | return -1; | |
937 | ||
938 | scnprintf(file, PATH_MAX, "%s/coherency_line_size", path); | |
939 | if (sysfs__read_int(file, (int *) &cache->line_size)) | |
940 | return -1; | |
941 | ||
942 | scnprintf(file, PATH_MAX, "%s/number_of_sets", path); | |
943 | if (sysfs__read_int(file, (int *) &cache->sets)) | |
944 | return -1; | |
945 | ||
946 | scnprintf(file, PATH_MAX, "%s/ways_of_associativity", path); | |
947 | if (sysfs__read_int(file, (int *) &cache->ways)) | |
948 | return -1; | |
949 | ||
950 | scnprintf(file, PATH_MAX, "%s/type", path); | |
951 | if (sysfs__read_str(file, &cache->type, &len)) | |
952 | return -1; | |
953 | ||
954 | cache->type[len] = 0; | |
955 | cache->type = rtrim(cache->type); | |
956 | ||
957 | scnprintf(file, PATH_MAX, "%s/size", path); | |
958 | if (sysfs__read_str(file, &cache->size, &len)) { | |
959 | free(cache->type); | |
960 | return -1; | |
961 | } | |
962 | ||
963 | cache->size[len] = 0; | |
964 | cache->size = rtrim(cache->size); | |
965 | ||
966 | scnprintf(file, PATH_MAX, "%s/shared_cpu_list", path); | |
967 | if (sysfs__read_str(file, &cache->map, &len)) { | |
968 | free(cache->map); | |
969 | free(cache->type); | |
970 | return -1; | |
971 | } | |
972 | ||
973 | cache->map[len] = 0; | |
974 | cache->map = rtrim(cache->map); | |
975 | return 0; | |
976 | } | |
977 | ||
978 | static void cpu_cache_level__fprintf(FILE *out, struct cpu_cache_level *c) | |
979 | { | |
980 | fprintf(out, "L%d %-15s %8s [%s]\n", c->level, c->type, c->size, c->map); | |
981 | } | |
982 | ||
983 | static int build_caches(struct cpu_cache_level caches[], u32 size, u32 *cntp) | |
984 | { | |
985 | u32 i, cnt = 0; | |
986 | long ncpus; | |
987 | u32 nr, cpu; | |
988 | u16 level; | |
989 | ||
990 | ncpus = sysconf(_SC_NPROCESSORS_CONF); | |
991 | if (ncpus < 0) | |
992 | return -1; | |
993 | ||
994 | nr = (u32)(ncpus & UINT_MAX); | |
995 | ||
996 | for (cpu = 0; cpu < nr; cpu++) { | |
997 | for (level = 0; level < 10; level++) { | |
998 | struct cpu_cache_level c; | |
999 | int err; | |
1000 | ||
1001 | err = cpu_cache_level__read(&c, cpu, level); | |
1002 | if (err < 0) | |
1003 | return err; | |
1004 | ||
1005 | if (err == 1) | |
1006 | break; | |
1007 | ||
1008 | for (i = 0; i < cnt; i++) { | |
1009 | if (cpu_cache_level__cmp(&c, &caches[i])) | |
1010 | break; | |
1011 | } | |
1012 | ||
1013 | if (i == cnt) | |
1014 | caches[cnt++] = c; | |
1015 | else | |
1016 | cpu_cache_level__free(&c); | |
1017 | ||
1018 | if (WARN_ONCE(cnt == size, "way too many cpu caches..")) | |
1019 | goto out; | |
1020 | } | |
1021 | } | |
1022 | out: | |
1023 | *cntp = cnt; | |
1024 | return 0; | |
1025 | } | |
1026 | ||
1027 | #define MAX_CACHES 2000 | |
1028 | ||
1029 | static int write_cache(int fd, struct perf_header *h __maybe_unused, | |
1030 | struct perf_evlist *evlist __maybe_unused) | |
1031 | { | |
1032 | struct cpu_cache_level caches[MAX_CACHES]; | |
1033 | u32 cnt = 0, i, version = 1; | |
1034 | int ret; | |
1035 | ||
1036 | ret = build_caches(caches, MAX_CACHES, &cnt); | |
1037 | if (ret) | |
1038 | goto out; | |
1039 | ||
1040 | qsort(&caches, cnt, sizeof(struct cpu_cache_level), cpu_cache_level__sort); | |
1041 | ||
1042 | ret = do_write(fd, &version, sizeof(u32)); | |
1043 | if (ret < 0) | |
1044 | goto out; | |
1045 | ||
1046 | ret = do_write(fd, &cnt, sizeof(u32)); | |
1047 | if (ret < 0) | |
1048 | goto out; | |
1049 | ||
1050 | for (i = 0; i < cnt; i++) { | |
1051 | struct cpu_cache_level *c = &caches[i]; | |
1052 | ||
1053 | #define _W(v) \ | |
1054 | ret = do_write(fd, &c->v, sizeof(u32)); \ | |
1055 | if (ret < 0) \ | |
1056 | goto out; | |
1057 | ||
1058 | _W(level) | |
1059 | _W(line_size) | |
1060 | _W(sets) | |
1061 | _W(ways) | |
1062 | #undef _W | |
1063 | ||
1064 | #define _W(v) \ | |
1065 | ret = do_write_string(fd, (const char *) c->v); \ | |
1066 | if (ret < 0) \ | |
1067 | goto out; | |
1068 | ||
1069 | _W(type) | |
1070 | _W(size) | |
1071 | _W(map) | |
1072 | #undef _W | |
1073 | } | |
1074 | ||
1075 | out: | |
1076 | for (i = 0; i < cnt; i++) | |
1077 | cpu_cache_level__free(&caches[i]); | |
1078 | return ret; | |
1079 | } | |
1080 | ||
ffa517ad JO |
1081 | static int write_stat(int fd __maybe_unused, |
1082 | struct perf_header *h __maybe_unused, | |
1083 | struct perf_evlist *evlist __maybe_unused) | |
1084 | { | |
1085 | return 0; | |
1086 | } | |
1087 | ||
7e94cfcc NK |
1088 | static void print_hostname(struct perf_header *ph, int fd __maybe_unused, |
1089 | FILE *fp) | |
fbe96f29 | 1090 | { |
7e94cfcc | 1091 | fprintf(fp, "# hostname : %s\n", ph->env.hostname); |
fbe96f29 SE |
1092 | } |
1093 | ||
7e94cfcc NK |
1094 | static void print_osrelease(struct perf_header *ph, int fd __maybe_unused, |
1095 | FILE *fp) | |
fbe96f29 | 1096 | { |
7e94cfcc | 1097 | fprintf(fp, "# os release : %s\n", ph->env.os_release); |
fbe96f29 SE |
1098 | } |
1099 | ||
7e94cfcc | 1100 | static void print_arch(struct perf_header *ph, int fd __maybe_unused, FILE *fp) |
fbe96f29 | 1101 | { |
7e94cfcc | 1102 | fprintf(fp, "# arch : %s\n", ph->env.arch); |
fbe96f29 SE |
1103 | } |
1104 | ||
7e94cfcc NK |
1105 | static void print_cpudesc(struct perf_header *ph, int fd __maybe_unused, |
1106 | FILE *fp) | |
fbe96f29 | 1107 | { |
7e94cfcc | 1108 | fprintf(fp, "# cpudesc : %s\n", ph->env.cpu_desc); |
fbe96f29 SE |
1109 | } |
1110 | ||
7e94cfcc NK |
1111 | static void print_nrcpus(struct perf_header *ph, int fd __maybe_unused, |
1112 | FILE *fp) | |
fbe96f29 | 1113 | { |
7e94cfcc NK |
1114 | fprintf(fp, "# nrcpus online : %u\n", ph->env.nr_cpus_online); |
1115 | fprintf(fp, "# nrcpus avail : %u\n", ph->env.nr_cpus_avail); | |
fbe96f29 SE |
1116 | } |
1117 | ||
7e94cfcc NK |
1118 | static void print_version(struct perf_header *ph, int fd __maybe_unused, |
1119 | FILE *fp) | |
fbe96f29 | 1120 | { |
7e94cfcc | 1121 | fprintf(fp, "# perf version : %s\n", ph->env.version); |
fbe96f29 SE |
1122 | } |
1123 | ||
7e94cfcc NK |
1124 | static void print_cmdline(struct perf_header *ph, int fd __maybe_unused, |
1125 | FILE *fp) | |
fbe96f29 | 1126 | { |
7e94cfcc | 1127 | int nr, i; |
fbe96f29 | 1128 | |
7e94cfcc | 1129 | nr = ph->env.nr_cmdline; |
fbe96f29 SE |
1130 | |
1131 | fprintf(fp, "# cmdline : "); | |
1132 | ||
768dd3f3 JO |
1133 | for (i = 0; i < nr; i++) |
1134 | fprintf(fp, "%s ", ph->env.cmdline_argv[i]); | |
fbe96f29 SE |
1135 | fputc('\n', fp); |
1136 | } | |
1137 | ||
7e94cfcc NK |
1138 | static void print_cpu_topology(struct perf_header *ph, int fd __maybe_unused, |
1139 | FILE *fp) | |
fbe96f29 | 1140 | { |
7e94cfcc | 1141 | int nr, i; |
fbe96f29 | 1142 | char *str; |
da8a58b5 | 1143 | int cpu_nr = ph->env.nr_cpus_avail; |
fbe96f29 | 1144 | |
7e94cfcc NK |
1145 | nr = ph->env.nr_sibling_cores; |
1146 | str = ph->env.sibling_cores; | |
fbe96f29 SE |
1147 | |
1148 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 1149 | fprintf(fp, "# sibling cores : %s\n", str); |
7e94cfcc | 1150 | str += strlen(str) + 1; |
fbe96f29 SE |
1151 | } |
1152 | ||
7e94cfcc NK |
1153 | nr = ph->env.nr_sibling_threads; |
1154 | str = ph->env.sibling_threads; | |
fbe96f29 SE |
1155 | |
1156 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 1157 | fprintf(fp, "# sibling threads : %s\n", str); |
7e94cfcc | 1158 | str += strlen(str) + 1; |
fbe96f29 | 1159 | } |
2bb00d2f KL |
1160 | |
1161 | if (ph->env.cpu != NULL) { | |
1162 | for (i = 0; i < cpu_nr; i++) | |
1163 | fprintf(fp, "# CPU %d: Core ID %d, Socket ID %d\n", i, | |
1164 | ph->env.cpu[i].core_id, ph->env.cpu[i].socket_id); | |
1165 | } else | |
1166 | fprintf(fp, "# Core ID and Socket ID information is not available\n"); | |
fbe96f29 SE |
1167 | } |
1168 | ||
4e1b9c67 | 1169 | static void free_event_desc(struct perf_evsel *events) |
fbe96f29 | 1170 | { |
4e1b9c67 RR |
1171 | struct perf_evsel *evsel; |
1172 | ||
1173 | if (!events) | |
1174 | return; | |
1175 | ||
1176 | for (evsel = events; evsel->attr.size; evsel++) { | |
74cf249d ACM |
1177 | zfree(&evsel->name); |
1178 | zfree(&evsel->id); | |
4e1b9c67 RR |
1179 | } |
1180 | ||
1181 | free(events); | |
1182 | } | |
1183 | ||
1184 | static struct perf_evsel * | |
1185 | read_event_desc(struct perf_header *ph, int fd) | |
1186 | { | |
1187 | struct perf_evsel *evsel, *events = NULL; | |
1188 | u64 *id; | |
fbe96f29 | 1189 | void *buf = NULL; |
62db9068 SE |
1190 | u32 nre, sz, nr, i, j; |
1191 | ssize_t ret; | |
1192 | size_t msz; | |
fbe96f29 SE |
1193 | |
1194 | /* number of events */ | |
5323f60c | 1195 | ret = readn(fd, &nre, sizeof(nre)); |
fbe96f29 SE |
1196 | if (ret != (ssize_t)sizeof(nre)) |
1197 | goto error; | |
1198 | ||
1199 | if (ph->needs_swap) | |
1200 | nre = bswap_32(nre); | |
1201 | ||
5323f60c | 1202 | ret = readn(fd, &sz, sizeof(sz)); |
fbe96f29 SE |
1203 | if (ret != (ssize_t)sizeof(sz)) |
1204 | goto error; | |
1205 | ||
1206 | if (ph->needs_swap) | |
1207 | sz = bswap_32(sz); | |
1208 | ||
62db9068 | 1209 | /* buffer to hold on file attr struct */ |
fbe96f29 SE |
1210 | buf = malloc(sz); |
1211 | if (!buf) | |
1212 | goto error; | |
1213 | ||
4e1b9c67 RR |
1214 | /* the last event terminates with evsel->attr.size == 0: */ |
1215 | events = calloc(nre + 1, sizeof(*events)); | |
1216 | if (!events) | |
1217 | goto error; | |
1218 | ||
1219 | msz = sizeof(evsel->attr); | |
9fafd98f | 1220 | if (sz < msz) |
fbe96f29 SE |
1221 | msz = sz; |
1222 | ||
4e1b9c67 RR |
1223 | for (i = 0, evsel = events; i < nre; evsel++, i++) { |
1224 | evsel->idx = i; | |
fbe96f29 | 1225 | |
62db9068 SE |
1226 | /* |
1227 | * must read entire on-file attr struct to | |
1228 | * sync up with layout. | |
1229 | */ | |
5323f60c | 1230 | ret = readn(fd, buf, sz); |
fbe96f29 SE |
1231 | if (ret != (ssize_t)sz) |
1232 | goto error; | |
1233 | ||
1234 | if (ph->needs_swap) | |
1235 | perf_event__attr_swap(buf); | |
1236 | ||
4e1b9c67 | 1237 | memcpy(&evsel->attr, buf, msz); |
fbe96f29 | 1238 | |
5323f60c | 1239 | ret = readn(fd, &nr, sizeof(nr)); |
fbe96f29 SE |
1240 | if (ret != (ssize_t)sizeof(nr)) |
1241 | goto error; | |
1242 | ||
0807d2d8 | 1243 | if (ph->needs_swap) { |
fbe96f29 | 1244 | nr = bswap_32(nr); |
0807d2d8 ACM |
1245 | evsel->needs_swap = true; |
1246 | } | |
fbe96f29 | 1247 | |
4e1b9c67 RR |
1248 | evsel->name = do_read_string(fd, ph); |
1249 | ||
1250 | if (!nr) | |
1251 | continue; | |
1252 | ||
1253 | id = calloc(nr, sizeof(*id)); | |
1254 | if (!id) | |
1255 | goto error; | |
1256 | evsel->ids = nr; | |
1257 | evsel->id = id; | |
1258 | ||
1259 | for (j = 0 ; j < nr; j++) { | |
5323f60c | 1260 | ret = readn(fd, id, sizeof(*id)); |
4e1b9c67 RR |
1261 | if (ret != (ssize_t)sizeof(*id)) |
1262 | goto error; | |
1263 | if (ph->needs_swap) | |
1264 | *id = bswap_64(*id); | |
1265 | id++; | |
1266 | } | |
1267 | } | |
1268 | out: | |
04662523 | 1269 | free(buf); |
4e1b9c67 RR |
1270 | return events; |
1271 | error: | |
4cc97614 | 1272 | free_event_desc(events); |
4e1b9c67 RR |
1273 | events = NULL; |
1274 | goto out; | |
1275 | } | |
1276 | ||
2c5e8c52 | 1277 | static int __desc_attr__fprintf(FILE *fp, const char *name, const char *val, |
0353631a | 1278 | void *priv __maybe_unused) |
2c5e8c52 PZ |
1279 | { |
1280 | return fprintf(fp, ", %s = %s", name, val); | |
1281 | } | |
1282 | ||
4e1b9c67 RR |
1283 | static void print_event_desc(struct perf_header *ph, int fd, FILE *fp) |
1284 | { | |
1285 | struct perf_evsel *evsel, *events = read_event_desc(ph, fd); | |
1286 | u32 j; | |
1287 | u64 *id; | |
1288 | ||
1289 | if (!events) { | |
1290 | fprintf(fp, "# event desc: not available or unable to read\n"); | |
1291 | return; | |
1292 | } | |
1293 | ||
1294 | for (evsel = events; evsel->attr.size; evsel++) { | |
1295 | fprintf(fp, "# event : name = %s, ", evsel->name); | |
fbe96f29 | 1296 | |
4e1b9c67 | 1297 | if (evsel->ids) { |
fbe96f29 | 1298 | fprintf(fp, ", id = {"); |
4e1b9c67 RR |
1299 | for (j = 0, id = evsel->id; j < evsel->ids; j++, id++) { |
1300 | if (j) | |
1301 | fputc(',', fp); | |
1302 | fprintf(fp, " %"PRIu64, *id); | |
1303 | } | |
fbe96f29 | 1304 | fprintf(fp, " }"); |
4e1b9c67 | 1305 | } |
814c8c38 | 1306 | |
2c5e8c52 | 1307 | perf_event_attr__fprintf(fp, &evsel->attr, __desc_attr__fprintf, NULL); |
4e1b9c67 | 1308 | |
fbe96f29 SE |
1309 | fputc('\n', fp); |
1310 | } | |
4e1b9c67 RR |
1311 | |
1312 | free_event_desc(events); | |
fbe96f29 SE |
1313 | } |
1314 | ||
7e94cfcc | 1315 | static void print_total_mem(struct perf_header *ph, int fd __maybe_unused, |
1d037ca1 | 1316 | FILE *fp) |
fbe96f29 | 1317 | { |
7e94cfcc | 1318 | fprintf(fp, "# total memory : %Lu kB\n", ph->env.total_mem); |
fbe96f29 SE |
1319 | } |
1320 | ||
7e94cfcc | 1321 | static void print_numa_topology(struct perf_header *ph, int fd __maybe_unused, |
1d037ca1 | 1322 | FILE *fp) |
fbe96f29 | 1323 | { |
c60da22a JO |
1324 | int i; |
1325 | struct numa_node *n; | |
fbe96f29 | 1326 | |
c60da22a JO |
1327 | for (i = 0; i < ph->env.nr_numa_nodes; i++) { |
1328 | n = &ph->env.numa_nodes[i]; | |
fbe96f29 | 1329 | |
fbe96f29 SE |
1330 | fprintf(fp, "# node%u meminfo : total = %"PRIu64" kB," |
1331 | " free = %"PRIu64" kB\n", | |
c60da22a | 1332 | n->node, n->mem_total, n->mem_free); |
1234471e | 1333 | |
c60da22a JO |
1334 | fprintf(fp, "# node%u cpu list : ", n->node); |
1335 | cpu_map__fprintf(n->map, fp); | |
fbe96f29 | 1336 | } |
fbe96f29 SE |
1337 | } |
1338 | ||
7e94cfcc | 1339 | static void print_cpuid(struct perf_header *ph, int fd __maybe_unused, FILE *fp) |
fbe96f29 | 1340 | { |
7e94cfcc | 1341 | fprintf(fp, "# cpuid : %s\n", ph->env.cpuid); |
fbe96f29 SE |
1342 | } |
1343 | ||
1d037ca1 | 1344 | static void print_branch_stack(struct perf_header *ph __maybe_unused, |
7e94cfcc | 1345 | int fd __maybe_unused, FILE *fp) |
330aa675 SE |
1346 | { |
1347 | fprintf(fp, "# contains samples with branch stack\n"); | |
1348 | } | |
1349 | ||
4025ea40 AH |
1350 | static void print_auxtrace(struct perf_header *ph __maybe_unused, |
1351 | int fd __maybe_unused, FILE *fp) | |
1352 | { | |
1353 | fprintf(fp, "# contains AUX area data (e.g. instruction trace)\n"); | |
1354 | } | |
1355 | ||
ffa517ad JO |
1356 | static void print_stat(struct perf_header *ph __maybe_unused, |
1357 | int fd __maybe_unused, FILE *fp) | |
1358 | { | |
1359 | fprintf(fp, "# contains stat data\n"); | |
1360 | } | |
1361 | ||
720e98b5 JO |
1362 | static void print_cache(struct perf_header *ph __maybe_unused, |
1363 | int fd __maybe_unused, FILE *fp __maybe_unused) | |
1364 | { | |
1365 | int i; | |
1366 | ||
1367 | fprintf(fp, "# CPU cache info:\n"); | |
1368 | for (i = 0; i < ph->env.caches_cnt; i++) { | |
1369 | fprintf(fp, "# "); | |
1370 | cpu_cache_level__fprintf(fp, &ph->env.caches[i]); | |
1371 | } | |
1372 | } | |
1373 | ||
7e94cfcc NK |
1374 | static void print_pmu_mappings(struct perf_header *ph, int fd __maybe_unused, |
1375 | FILE *fp) | |
50a9667c RR |
1376 | { |
1377 | const char *delimiter = "# pmu mappings: "; | |
7e94cfcc | 1378 | char *str, *tmp; |
50a9667c RR |
1379 | u32 pmu_num; |
1380 | u32 type; | |
1381 | ||
7e94cfcc | 1382 | pmu_num = ph->env.nr_pmu_mappings; |
50a9667c RR |
1383 | if (!pmu_num) { |
1384 | fprintf(fp, "# pmu mappings: not available\n"); | |
1385 | return; | |
1386 | } | |
1387 | ||
7e94cfcc NK |
1388 | str = ph->env.pmu_mappings; |
1389 | ||
50a9667c | 1390 | while (pmu_num) { |
7e94cfcc NK |
1391 | type = strtoul(str, &tmp, 0); |
1392 | if (*tmp != ':') | |
1393 | goto error; | |
1394 | ||
1395 | str = tmp + 1; | |
1396 | fprintf(fp, "%s%s = %" PRIu32, delimiter, str, type); | |
be4a2ded | 1397 | |
50a9667c | 1398 | delimiter = ", "; |
7e94cfcc NK |
1399 | str += strlen(str) + 1; |
1400 | pmu_num--; | |
50a9667c RR |
1401 | } |
1402 | ||
1403 | fprintf(fp, "\n"); | |
1404 | ||
1405 | if (!pmu_num) | |
1406 | return; | |
1407 | error: | |
1408 | fprintf(fp, "# pmu mappings: unable to read\n"); | |
1409 | } | |
1410 | ||
a8bb559b NK |
1411 | static void print_group_desc(struct perf_header *ph, int fd __maybe_unused, |
1412 | FILE *fp) | |
1413 | { | |
1414 | struct perf_session *session; | |
1415 | struct perf_evsel *evsel; | |
1416 | u32 nr = 0; | |
1417 | ||
1418 | session = container_of(ph, struct perf_session, header); | |
1419 | ||
e5cadb93 | 1420 | evlist__for_each_entry(session->evlist, evsel) { |
a8bb559b NK |
1421 | if (perf_evsel__is_group_leader(evsel) && |
1422 | evsel->nr_members > 1) { | |
1423 | fprintf(fp, "# group: %s{%s", evsel->group_name ?: "", | |
1424 | perf_evsel__name(evsel)); | |
1425 | ||
1426 | nr = evsel->nr_members - 1; | |
1427 | } else if (nr) { | |
1428 | fprintf(fp, ",%s", perf_evsel__name(evsel)); | |
1429 | ||
1430 | if (--nr == 0) | |
1431 | fprintf(fp, "}\n"); | |
1432 | } | |
1433 | } | |
1434 | } | |
1435 | ||
08d95bd2 RR |
1436 | static int __event_process_build_id(struct build_id_event *bev, |
1437 | char *filename, | |
1438 | struct perf_session *session) | |
1439 | { | |
1440 | int err = -1; | |
08d95bd2 | 1441 | struct machine *machine; |
1f121b03 | 1442 | u16 cpumode; |
08d95bd2 RR |
1443 | struct dso *dso; |
1444 | enum dso_kernel_type dso_type; | |
1445 | ||
1446 | machine = perf_session__findnew_machine(session, bev->pid); | |
1447 | if (!machine) | |
1448 | goto out; | |
1449 | ||
1f121b03 | 1450 | cpumode = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
08d95bd2 | 1451 | |
1f121b03 | 1452 | switch (cpumode) { |
08d95bd2 RR |
1453 | case PERF_RECORD_MISC_KERNEL: |
1454 | dso_type = DSO_TYPE_KERNEL; | |
08d95bd2 RR |
1455 | break; |
1456 | case PERF_RECORD_MISC_GUEST_KERNEL: | |
1457 | dso_type = DSO_TYPE_GUEST_KERNEL; | |
08d95bd2 RR |
1458 | break; |
1459 | case PERF_RECORD_MISC_USER: | |
1460 | case PERF_RECORD_MISC_GUEST_USER: | |
1461 | dso_type = DSO_TYPE_USER; | |
08d95bd2 RR |
1462 | break; |
1463 | default: | |
1464 | goto out; | |
1465 | } | |
1466 | ||
aa7cc2ae | 1467 | dso = machine__findnew_dso(machine, filename); |
08d95bd2 | 1468 | if (dso != NULL) { |
b5d8bbe8 | 1469 | char sbuild_id[SBUILD_ID_SIZE]; |
08d95bd2 RR |
1470 | |
1471 | dso__set_build_id(dso, &bev->build_id); | |
1472 | ||
1deec1bd NK |
1473 | if (dso_type != DSO_TYPE_USER) { |
1474 | struct kmod_path m = { .name = NULL, }; | |
1475 | ||
1476 | if (!kmod_path__parse_name(&m, filename) && m.kmod) | |
6b335e8f | 1477 | dso__set_module_info(dso, &m, machine); |
1deec1bd NK |
1478 | else |
1479 | dso->kernel = dso_type; | |
1480 | ||
1481 | free(m.name); | |
1482 | } | |
08d95bd2 RR |
1483 | |
1484 | build_id__sprintf(dso->build_id, sizeof(dso->build_id), | |
1485 | sbuild_id); | |
1486 | pr_debug("build id event received for %s: %s\n", | |
1487 | dso->long_name, sbuild_id); | |
d3a7c489 | 1488 | dso__put(dso); |
08d95bd2 RR |
1489 | } |
1490 | ||
1491 | err = 0; | |
1492 | out: | |
1493 | return err; | |
1494 | } | |
1495 | ||
1496 | static int perf_header__read_build_ids_abi_quirk(struct perf_header *header, | |
1497 | int input, u64 offset, u64 size) | |
1498 | { | |
1499 | struct perf_session *session = container_of(header, struct perf_session, header); | |
1500 | struct { | |
1501 | struct perf_event_header header; | |
9ac3e487 | 1502 | u8 build_id[PERF_ALIGN(BUILD_ID_SIZE, sizeof(u64))]; |
08d95bd2 RR |
1503 | char filename[0]; |
1504 | } old_bev; | |
1505 | struct build_id_event bev; | |
1506 | char filename[PATH_MAX]; | |
1507 | u64 limit = offset + size; | |
1508 | ||
1509 | while (offset < limit) { | |
1510 | ssize_t len; | |
1511 | ||
5323f60c | 1512 | if (readn(input, &old_bev, sizeof(old_bev)) != sizeof(old_bev)) |
08d95bd2 RR |
1513 | return -1; |
1514 | ||
1515 | if (header->needs_swap) | |
1516 | perf_event_header__bswap(&old_bev.header); | |
1517 | ||
1518 | len = old_bev.header.size - sizeof(old_bev); | |
5323f60c | 1519 | if (readn(input, filename, len) != len) |
08d95bd2 RR |
1520 | return -1; |
1521 | ||
1522 | bev.header = old_bev.header; | |
1523 | ||
1524 | /* | |
1525 | * As the pid is the missing value, we need to fill | |
1526 | * it properly. The header.misc value give us nice hint. | |
1527 | */ | |
1528 | bev.pid = HOST_KERNEL_ID; | |
1529 | if (bev.header.misc == PERF_RECORD_MISC_GUEST_USER || | |
1530 | bev.header.misc == PERF_RECORD_MISC_GUEST_KERNEL) | |
1531 | bev.pid = DEFAULT_GUEST_KERNEL_ID; | |
1532 | ||
1533 | memcpy(bev.build_id, old_bev.build_id, sizeof(bev.build_id)); | |
1534 | __event_process_build_id(&bev, filename, session); | |
1535 | ||
1536 | offset += bev.header.size; | |
1537 | } | |
1538 | ||
1539 | return 0; | |
1540 | } | |
1541 | ||
1542 | static int perf_header__read_build_ids(struct perf_header *header, | |
1543 | int input, u64 offset, u64 size) | |
1544 | { | |
1545 | struct perf_session *session = container_of(header, struct perf_session, header); | |
1546 | struct build_id_event bev; | |
1547 | char filename[PATH_MAX]; | |
1548 | u64 limit = offset + size, orig_offset = offset; | |
1549 | int err = -1; | |
1550 | ||
1551 | while (offset < limit) { | |
1552 | ssize_t len; | |
1553 | ||
5323f60c | 1554 | if (readn(input, &bev, sizeof(bev)) != sizeof(bev)) |
08d95bd2 RR |
1555 | goto out; |
1556 | ||
1557 | if (header->needs_swap) | |
1558 | perf_event_header__bswap(&bev.header); | |
1559 | ||
1560 | len = bev.header.size - sizeof(bev); | |
5323f60c | 1561 | if (readn(input, filename, len) != len) |
08d95bd2 RR |
1562 | goto out; |
1563 | /* | |
1564 | * The a1645ce1 changeset: | |
1565 | * | |
1566 | * "perf: 'perf kvm' tool for monitoring guest performance from host" | |
1567 | * | |
1568 | * Added a field to struct build_id_event that broke the file | |
1569 | * format. | |
1570 | * | |
1571 | * Since the kernel build-id is the first entry, process the | |
1572 | * table using the old format if the well known | |
1573 | * '[kernel.kallsyms]' string for the kernel build-id has the | |
1574 | * first 4 characters chopped off (where the pid_t sits). | |
1575 | */ | |
1576 | if (memcmp(filename, "nel.kallsyms]", 13) == 0) { | |
1577 | if (lseek(input, orig_offset, SEEK_SET) == (off_t)-1) | |
1578 | return -1; | |
1579 | return perf_header__read_build_ids_abi_quirk(header, input, offset, size); | |
1580 | } | |
1581 | ||
1582 | __event_process_build_id(&bev, filename, session); | |
1583 | ||
1584 | offset += bev.header.size; | |
1585 | } | |
1586 | err = 0; | |
1587 | out: | |
1588 | return err; | |
1589 | } | |
1590 | ||
3d7eb86b NK |
1591 | static int process_tracing_data(struct perf_file_section *section __maybe_unused, |
1592 | struct perf_header *ph __maybe_unused, | |
1593 | int fd, void *data) | |
f1c67db7 | 1594 | { |
3dce2ce3 NK |
1595 | ssize_t ret = trace_report(fd, data, false); |
1596 | return ret < 0 ? -1 : 0; | |
f1c67db7 RR |
1597 | } |
1598 | ||
1599 | static int process_build_id(struct perf_file_section *section, | |
3d7eb86b | 1600 | struct perf_header *ph, int fd, |
1d037ca1 | 1601 | void *data __maybe_unused) |
f1c67db7 RR |
1602 | { |
1603 | if (perf_header__read_build_ids(ph, fd, section->offset, section->size)) | |
1604 | pr_debug("Failed to read buildids, continuing...\n"); | |
1605 | return 0; | |
1606 | } | |
1607 | ||
a1ae5655 | 1608 | static int process_hostname(struct perf_file_section *section __maybe_unused, |
3d7eb86b NK |
1609 | struct perf_header *ph, int fd, |
1610 | void *data __maybe_unused) | |
a1ae5655 NK |
1611 | { |
1612 | ph->env.hostname = do_read_string(fd, ph); | |
1613 | return ph->env.hostname ? 0 : -ENOMEM; | |
1614 | } | |
1615 | ||
1616 | static int process_osrelease(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1617 | struct perf_header *ph, int fd, |
1618 | void *data __maybe_unused) | |
a1ae5655 NK |
1619 | { |
1620 | ph->env.os_release = do_read_string(fd, ph); | |
1621 | return ph->env.os_release ? 0 : -ENOMEM; | |
1622 | } | |
1623 | ||
1624 | static int process_version(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1625 | struct perf_header *ph, int fd, |
1626 | void *data __maybe_unused) | |
a1ae5655 NK |
1627 | { |
1628 | ph->env.version = do_read_string(fd, ph); | |
1629 | return ph->env.version ? 0 : -ENOMEM; | |
1630 | } | |
1631 | ||
1632 | static int process_arch(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1633 | struct perf_header *ph, int fd, |
1634 | void *data __maybe_unused) | |
a1ae5655 NK |
1635 | { |
1636 | ph->env.arch = do_read_string(fd, ph); | |
1637 | return ph->env.arch ? 0 : -ENOMEM; | |
1638 | } | |
1639 | ||
1640 | static int process_nrcpus(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1641 | struct perf_header *ph, int fd, |
1642 | void *data __maybe_unused) | |
a1ae5655 | 1643 | { |
727ebd54 | 1644 | ssize_t ret; |
a1ae5655 NK |
1645 | u32 nr; |
1646 | ||
5323f60c | 1647 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1648 | if (ret != sizeof(nr)) |
1649 | return -1; | |
1650 | ||
1651 | if (ph->needs_swap) | |
1652 | nr = bswap_32(nr); | |
1653 | ||
caa47047 | 1654 | ph->env.nr_cpus_avail = nr; |
a1ae5655 | 1655 | |
5323f60c | 1656 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1657 | if (ret != sizeof(nr)) |
1658 | return -1; | |
1659 | ||
1660 | if (ph->needs_swap) | |
1661 | nr = bswap_32(nr); | |
1662 | ||
caa47047 | 1663 | ph->env.nr_cpus_online = nr; |
a1ae5655 NK |
1664 | return 0; |
1665 | } | |
1666 | ||
1667 | static int process_cpudesc(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1668 | struct perf_header *ph, int fd, |
1669 | void *data __maybe_unused) | |
a1ae5655 NK |
1670 | { |
1671 | ph->env.cpu_desc = do_read_string(fd, ph); | |
1672 | return ph->env.cpu_desc ? 0 : -ENOMEM; | |
1673 | } | |
1674 | ||
1675 | static int process_cpuid(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1676 | struct perf_header *ph, int fd, |
1677 | void *data __maybe_unused) | |
a1ae5655 NK |
1678 | { |
1679 | ph->env.cpuid = do_read_string(fd, ph); | |
1680 | return ph->env.cpuid ? 0 : -ENOMEM; | |
1681 | } | |
1682 | ||
1683 | static int process_total_mem(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1684 | struct perf_header *ph, int fd, |
1685 | void *data __maybe_unused) | |
a1ae5655 NK |
1686 | { |
1687 | uint64_t mem; | |
727ebd54 | 1688 | ssize_t ret; |
a1ae5655 | 1689 | |
5323f60c | 1690 | ret = readn(fd, &mem, sizeof(mem)); |
a1ae5655 NK |
1691 | if (ret != sizeof(mem)) |
1692 | return -1; | |
1693 | ||
1694 | if (ph->needs_swap) | |
1695 | mem = bswap_64(mem); | |
1696 | ||
1697 | ph->env.total_mem = mem; | |
1698 | return 0; | |
1699 | } | |
1700 | ||
7c2f7afd RR |
1701 | static struct perf_evsel * |
1702 | perf_evlist__find_by_index(struct perf_evlist *evlist, int idx) | |
1703 | { | |
1704 | struct perf_evsel *evsel; | |
1705 | ||
e5cadb93 | 1706 | evlist__for_each_entry(evlist, evsel) { |
7c2f7afd RR |
1707 | if (evsel->idx == idx) |
1708 | return evsel; | |
1709 | } | |
1710 | ||
1711 | return NULL; | |
1712 | } | |
1713 | ||
1714 | static void | |
3d7eb86b NK |
1715 | perf_evlist__set_event_name(struct perf_evlist *evlist, |
1716 | struct perf_evsel *event) | |
7c2f7afd RR |
1717 | { |
1718 | struct perf_evsel *evsel; | |
1719 | ||
1720 | if (!event->name) | |
1721 | return; | |
1722 | ||
1723 | evsel = perf_evlist__find_by_index(evlist, event->idx); | |
1724 | if (!evsel) | |
1725 | return; | |
1726 | ||
1727 | if (evsel->name) | |
1728 | return; | |
1729 | ||
1730 | evsel->name = strdup(event->name); | |
1731 | } | |
1732 | ||
1733 | static int | |
1d037ca1 | 1734 | process_event_desc(struct perf_file_section *section __maybe_unused, |
3d7eb86b | 1735 | struct perf_header *header, int fd, |
1d037ca1 | 1736 | void *data __maybe_unused) |
7c2f7afd | 1737 | { |
3d7eb86b | 1738 | struct perf_session *session; |
7c2f7afd RR |
1739 | struct perf_evsel *evsel, *events = read_event_desc(header, fd); |
1740 | ||
1741 | if (!events) | |
1742 | return 0; | |
1743 | ||
3d7eb86b | 1744 | session = container_of(header, struct perf_session, header); |
7c2f7afd RR |
1745 | for (evsel = events; evsel->attr.size; evsel++) |
1746 | perf_evlist__set_event_name(session->evlist, evsel); | |
1747 | ||
1748 | free_event_desc(events); | |
1749 | ||
1750 | return 0; | |
1751 | } | |
1752 | ||
768dd3f3 | 1753 | static int process_cmdline(struct perf_file_section *section, |
3d7eb86b NK |
1754 | struct perf_header *ph, int fd, |
1755 | void *data __maybe_unused) | |
a1ae5655 | 1756 | { |
727ebd54 | 1757 | ssize_t ret; |
768dd3f3 JO |
1758 | char *str, *cmdline = NULL, **argv = NULL; |
1759 | u32 nr, i, len = 0; | |
a1ae5655 | 1760 | |
5323f60c | 1761 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1762 | if (ret != sizeof(nr)) |
1763 | return -1; | |
1764 | ||
1765 | if (ph->needs_swap) | |
1766 | nr = bswap_32(nr); | |
1767 | ||
1768 | ph->env.nr_cmdline = nr; | |
768dd3f3 JO |
1769 | |
1770 | cmdline = zalloc(section->size + nr + 1); | |
1771 | if (!cmdline) | |
1772 | return -1; | |
1773 | ||
1774 | argv = zalloc(sizeof(char *) * (nr + 1)); | |
1775 | if (!argv) | |
1776 | goto error; | |
a1ae5655 NK |
1777 | |
1778 | for (i = 0; i < nr; i++) { | |
1779 | str = do_read_string(fd, ph); | |
1780 | if (!str) | |
1781 | goto error; | |
1782 | ||
768dd3f3 JO |
1783 | argv[i] = cmdline + len; |
1784 | memcpy(argv[i], str, strlen(str) + 1); | |
1785 | len += strlen(str) + 1; | |
a1ae5655 NK |
1786 | free(str); |
1787 | } | |
768dd3f3 JO |
1788 | ph->env.cmdline = cmdline; |
1789 | ph->env.cmdline_argv = (const char **) argv; | |
a1ae5655 NK |
1790 | return 0; |
1791 | ||
1792 | error: | |
768dd3f3 JO |
1793 | free(argv); |
1794 | free(cmdline); | |
a1ae5655 NK |
1795 | return -1; |
1796 | } | |
1797 | ||
2bb00d2f | 1798 | static int process_cpu_topology(struct perf_file_section *section, |
3d7eb86b NK |
1799 | struct perf_header *ph, int fd, |
1800 | void *data __maybe_unused) | |
a1ae5655 | 1801 | { |
727ebd54 | 1802 | ssize_t ret; |
a1ae5655 NK |
1803 | u32 nr, i; |
1804 | char *str; | |
1805 | struct strbuf sb; | |
da8a58b5 | 1806 | int cpu_nr = ph->env.nr_cpus_avail; |
2bb00d2f KL |
1807 | u64 size = 0; |
1808 | ||
1809 | ph->env.cpu = calloc(cpu_nr, sizeof(*ph->env.cpu)); | |
1810 | if (!ph->env.cpu) | |
1811 | return -1; | |
a1ae5655 | 1812 | |
5323f60c | 1813 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 | 1814 | if (ret != sizeof(nr)) |
2bb00d2f | 1815 | goto free_cpu; |
a1ae5655 NK |
1816 | |
1817 | if (ph->needs_swap) | |
1818 | nr = bswap_32(nr); | |
1819 | ||
1820 | ph->env.nr_sibling_cores = nr; | |
2bb00d2f | 1821 | size += sizeof(u32); |
642aadaa MH |
1822 | if (strbuf_init(&sb, 128) < 0) |
1823 | goto free_cpu; | |
a1ae5655 NK |
1824 | |
1825 | for (i = 0; i < nr; i++) { | |
1826 | str = do_read_string(fd, ph); | |
1827 | if (!str) | |
1828 | goto error; | |
1829 | ||
1830 | /* include a NULL character at the end */ | |
642aadaa MH |
1831 | if (strbuf_add(&sb, str, strlen(str) + 1) < 0) |
1832 | goto error; | |
2bb00d2f | 1833 | size += string_size(str); |
a1ae5655 NK |
1834 | free(str); |
1835 | } | |
1836 | ph->env.sibling_cores = strbuf_detach(&sb, NULL); | |
1837 | ||
5323f60c | 1838 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1839 | if (ret != sizeof(nr)) |
1840 | return -1; | |
1841 | ||
1842 | if (ph->needs_swap) | |
1843 | nr = bswap_32(nr); | |
1844 | ||
1845 | ph->env.nr_sibling_threads = nr; | |
2bb00d2f | 1846 | size += sizeof(u32); |
a1ae5655 NK |
1847 | |
1848 | for (i = 0; i < nr; i++) { | |
1849 | str = do_read_string(fd, ph); | |
1850 | if (!str) | |
1851 | goto error; | |
1852 | ||
1853 | /* include a NULL character at the end */ | |
642aadaa MH |
1854 | if (strbuf_add(&sb, str, strlen(str) + 1) < 0) |
1855 | goto error; | |
2bb00d2f | 1856 | size += string_size(str); |
a1ae5655 NK |
1857 | free(str); |
1858 | } | |
1859 | ph->env.sibling_threads = strbuf_detach(&sb, NULL); | |
2bb00d2f KL |
1860 | |
1861 | /* | |
1862 | * The header may be from old perf, | |
1863 | * which doesn't include core id and socket id information. | |
1864 | */ | |
1865 | if (section->size <= size) { | |
1866 | zfree(&ph->env.cpu); | |
1867 | return 0; | |
1868 | } | |
1869 | ||
1870 | for (i = 0; i < (u32)cpu_nr; i++) { | |
1871 | ret = readn(fd, &nr, sizeof(nr)); | |
1872 | if (ret != sizeof(nr)) | |
1873 | goto free_cpu; | |
1874 | ||
1875 | if (ph->needs_swap) | |
1876 | nr = bswap_32(nr); | |
1877 | ||
2bb00d2f KL |
1878 | ph->env.cpu[i].core_id = nr; |
1879 | ||
1880 | ret = readn(fd, &nr, sizeof(nr)); | |
1881 | if (ret != sizeof(nr)) | |
1882 | goto free_cpu; | |
1883 | ||
1884 | if (ph->needs_swap) | |
1885 | nr = bswap_32(nr); | |
1886 | ||
da8a58b5 | 1887 | if (nr != (u32)-1 && nr > (u32)cpu_nr) { |
2bb00d2f KL |
1888 | pr_debug("socket_id number is too big." |
1889 | "You may need to upgrade the perf tool.\n"); | |
1890 | goto free_cpu; | |
1891 | } | |
1892 | ||
1893 | ph->env.cpu[i].socket_id = nr; | |
1894 | } | |
1895 | ||
a1ae5655 NK |
1896 | return 0; |
1897 | ||
1898 | error: | |
1899 | strbuf_release(&sb); | |
2bb00d2f KL |
1900 | free_cpu: |
1901 | zfree(&ph->env.cpu); | |
a1ae5655 NK |
1902 | return -1; |
1903 | } | |
1904 | ||
1905 | static int process_numa_topology(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1906 | struct perf_header *ph, int fd, |
1907 | void *data __maybe_unused) | |
a1ae5655 | 1908 | { |
c60da22a | 1909 | struct numa_node *nodes, *n; |
727ebd54 | 1910 | ssize_t ret; |
c60da22a | 1911 | u32 nr, i; |
a1ae5655 | 1912 | char *str; |
a1ae5655 NK |
1913 | |
1914 | /* nr nodes */ | |
5323f60c | 1915 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 | 1916 | if (ret != sizeof(nr)) |
642aadaa | 1917 | return -1; |
a1ae5655 NK |
1918 | |
1919 | if (ph->needs_swap) | |
1920 | nr = bswap_32(nr); | |
1921 | ||
c60da22a JO |
1922 | nodes = zalloc(sizeof(*nodes) * nr); |
1923 | if (!nodes) | |
1924 | return -ENOMEM; | |
a1ae5655 NK |
1925 | |
1926 | for (i = 0; i < nr; i++) { | |
c60da22a JO |
1927 | n = &nodes[i]; |
1928 | ||
a1ae5655 | 1929 | /* node number */ |
c60da22a JO |
1930 | ret = readn(fd, &n->node, sizeof(u32)); |
1931 | if (ret != sizeof(n->node)) | |
a1ae5655 NK |
1932 | goto error; |
1933 | ||
c60da22a | 1934 | ret = readn(fd, &n->mem_total, sizeof(u64)); |
a1ae5655 NK |
1935 | if (ret != sizeof(u64)) |
1936 | goto error; | |
1937 | ||
c60da22a | 1938 | ret = readn(fd, &n->mem_free, sizeof(u64)); |
a1ae5655 NK |
1939 | if (ret != sizeof(u64)) |
1940 | goto error; | |
1941 | ||
1942 | if (ph->needs_swap) { | |
c60da22a JO |
1943 | n->node = bswap_32(n->node); |
1944 | n->mem_total = bswap_64(n->mem_total); | |
1945 | n->mem_free = bswap_64(n->mem_free); | |
a1ae5655 NK |
1946 | } |
1947 | ||
a1ae5655 NK |
1948 | str = do_read_string(fd, ph); |
1949 | if (!str) | |
1950 | goto error; | |
1951 | ||
c60da22a JO |
1952 | n->map = cpu_map__new(str); |
1953 | if (!n->map) | |
642aadaa | 1954 | goto error; |
c60da22a | 1955 | |
a1ae5655 NK |
1956 | free(str); |
1957 | } | |
f957a530 | 1958 | ph->env.nr_numa_nodes = nr; |
c60da22a | 1959 | ph->env.numa_nodes = nodes; |
a1ae5655 NK |
1960 | return 0; |
1961 | ||
1962 | error: | |
c60da22a | 1963 | free(nodes); |
a1ae5655 NK |
1964 | return -1; |
1965 | } | |
1966 | ||
1967 | static int process_pmu_mappings(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1968 | struct perf_header *ph, int fd, |
1969 | void *data __maybe_unused) | |
a1ae5655 | 1970 | { |
727ebd54 | 1971 | ssize_t ret; |
a1ae5655 NK |
1972 | char *name; |
1973 | u32 pmu_num; | |
1974 | u32 type; | |
1975 | struct strbuf sb; | |
1976 | ||
5323f60c | 1977 | ret = readn(fd, &pmu_num, sizeof(pmu_num)); |
a1ae5655 NK |
1978 | if (ret != sizeof(pmu_num)) |
1979 | return -1; | |
1980 | ||
1981 | if (ph->needs_swap) | |
1982 | pmu_num = bswap_32(pmu_num); | |
1983 | ||
1984 | if (!pmu_num) { | |
1985 | pr_debug("pmu mappings not available\n"); | |
1986 | return 0; | |
1987 | } | |
1988 | ||
1989 | ph->env.nr_pmu_mappings = pmu_num; | |
642aadaa MH |
1990 | if (strbuf_init(&sb, 128) < 0) |
1991 | return -1; | |
a1ae5655 NK |
1992 | |
1993 | while (pmu_num) { | |
5323f60c | 1994 | if (readn(fd, &type, sizeof(type)) != sizeof(type)) |
a1ae5655 NK |
1995 | goto error; |
1996 | if (ph->needs_swap) | |
1997 | type = bswap_32(type); | |
1998 | ||
1999 | name = do_read_string(fd, ph); | |
2000 | if (!name) | |
2001 | goto error; | |
2002 | ||
642aadaa MH |
2003 | if (strbuf_addf(&sb, "%u:%s", type, name) < 0) |
2004 | goto error; | |
a1ae5655 | 2005 | /* include a NULL character at the end */ |
642aadaa MH |
2006 | if (strbuf_add(&sb, "", 1) < 0) |
2007 | goto error; | |
a1ae5655 | 2008 | |
e0838e02 KL |
2009 | if (!strcmp(name, "msr")) |
2010 | ph->env.msr_pmu_type = type; | |
2011 | ||
a1ae5655 NK |
2012 | free(name); |
2013 | pmu_num--; | |
2014 | } | |
2015 | ph->env.pmu_mappings = strbuf_detach(&sb, NULL); | |
2016 | return 0; | |
2017 | ||
2018 | error: | |
2019 | strbuf_release(&sb); | |
2020 | return -1; | |
2021 | } | |
2022 | ||
a8bb559b NK |
2023 | static int process_group_desc(struct perf_file_section *section __maybe_unused, |
2024 | struct perf_header *ph, int fd, | |
2025 | void *data __maybe_unused) | |
2026 | { | |
2027 | size_t ret = -1; | |
2028 | u32 i, nr, nr_groups; | |
2029 | struct perf_session *session; | |
2030 | struct perf_evsel *evsel, *leader = NULL; | |
2031 | struct group_desc { | |
2032 | char *name; | |
2033 | u32 leader_idx; | |
2034 | u32 nr_members; | |
2035 | } *desc; | |
2036 | ||
2037 | if (readn(fd, &nr_groups, sizeof(nr_groups)) != sizeof(nr_groups)) | |
2038 | return -1; | |
2039 | ||
2040 | if (ph->needs_swap) | |
2041 | nr_groups = bswap_32(nr_groups); | |
2042 | ||
2043 | ph->env.nr_groups = nr_groups; | |
2044 | if (!nr_groups) { | |
2045 | pr_debug("group desc not available\n"); | |
2046 | return 0; | |
2047 | } | |
2048 | ||
2049 | desc = calloc(nr_groups, sizeof(*desc)); | |
2050 | if (!desc) | |
2051 | return -1; | |
2052 | ||
2053 | for (i = 0; i < nr_groups; i++) { | |
2054 | desc[i].name = do_read_string(fd, ph); | |
2055 | if (!desc[i].name) | |
2056 | goto out_free; | |
2057 | ||
2058 | if (readn(fd, &desc[i].leader_idx, sizeof(u32)) != sizeof(u32)) | |
2059 | goto out_free; | |
2060 | ||
2061 | if (readn(fd, &desc[i].nr_members, sizeof(u32)) != sizeof(u32)) | |
2062 | goto out_free; | |
2063 | ||
2064 | if (ph->needs_swap) { | |
2065 | desc[i].leader_idx = bswap_32(desc[i].leader_idx); | |
2066 | desc[i].nr_members = bswap_32(desc[i].nr_members); | |
2067 | } | |
2068 | } | |
2069 | ||
2070 | /* | |
2071 | * Rebuild group relationship based on the group_desc | |
2072 | */ | |
2073 | session = container_of(ph, struct perf_session, header); | |
2074 | session->evlist->nr_groups = nr_groups; | |
2075 | ||
2076 | i = nr = 0; | |
e5cadb93 | 2077 | evlist__for_each_entry(session->evlist, evsel) { |
a8bb559b NK |
2078 | if (evsel->idx == (int) desc[i].leader_idx) { |
2079 | evsel->leader = evsel; | |
2080 | /* {anon_group} is a dummy name */ | |
210e812f | 2081 | if (strcmp(desc[i].name, "{anon_group}")) { |
a8bb559b | 2082 | evsel->group_name = desc[i].name; |
210e812f NK |
2083 | desc[i].name = NULL; |
2084 | } | |
a8bb559b NK |
2085 | evsel->nr_members = desc[i].nr_members; |
2086 | ||
2087 | if (i >= nr_groups || nr > 0) { | |
2088 | pr_debug("invalid group desc\n"); | |
2089 | goto out_free; | |
2090 | } | |
2091 | ||
2092 | leader = evsel; | |
2093 | nr = evsel->nr_members - 1; | |
2094 | i++; | |
2095 | } else if (nr) { | |
2096 | /* This is a group member */ | |
2097 | evsel->leader = leader; | |
2098 | ||
2099 | nr--; | |
2100 | } | |
2101 | } | |
2102 | ||
2103 | if (i != nr_groups || nr != 0) { | |
2104 | pr_debug("invalid group desc\n"); | |
2105 | goto out_free; | |
2106 | } | |
2107 | ||
2108 | ret = 0; | |
2109 | out_free: | |
50a2740b | 2110 | for (i = 0; i < nr_groups; i++) |
74cf249d | 2111 | zfree(&desc[i].name); |
a8bb559b NK |
2112 | free(desc); |
2113 | ||
2114 | return ret; | |
2115 | } | |
2116 | ||
99fa2984 AH |
2117 | static int process_auxtrace(struct perf_file_section *section, |
2118 | struct perf_header *ph, int fd, | |
2119 | void *data __maybe_unused) | |
2120 | { | |
2121 | struct perf_session *session; | |
2122 | int err; | |
2123 | ||
2124 | session = container_of(ph, struct perf_session, header); | |
2125 | ||
2126 | err = auxtrace_index__process(fd, section->size, session, | |
2127 | ph->needs_swap); | |
2128 | if (err < 0) | |
2129 | pr_err("Failed to process auxtrace index\n"); | |
2130 | return err; | |
2131 | } | |
2132 | ||
720e98b5 JO |
2133 | static int process_cache(struct perf_file_section *section __maybe_unused, |
2134 | struct perf_header *ph __maybe_unused, int fd __maybe_unused, | |
2135 | void *data __maybe_unused) | |
2136 | { | |
2137 | struct cpu_cache_level *caches; | |
2138 | u32 cnt, i, version; | |
2139 | ||
2140 | if (readn(fd, &version, sizeof(version)) != sizeof(version)) | |
2141 | return -1; | |
2142 | ||
2143 | if (ph->needs_swap) | |
2144 | version = bswap_32(version); | |
2145 | ||
2146 | if (version != 1) | |
2147 | return -1; | |
2148 | ||
2149 | if (readn(fd, &cnt, sizeof(cnt)) != sizeof(cnt)) | |
2150 | return -1; | |
2151 | ||
2152 | if (ph->needs_swap) | |
2153 | cnt = bswap_32(cnt); | |
2154 | ||
2155 | caches = zalloc(sizeof(*caches) * cnt); | |
2156 | if (!caches) | |
2157 | return -1; | |
2158 | ||
2159 | for (i = 0; i < cnt; i++) { | |
2160 | struct cpu_cache_level c; | |
2161 | ||
2162 | #define _R(v) \ | |
2163 | if (readn(fd, &c.v, sizeof(u32)) != sizeof(u32))\ | |
2164 | goto out_free_caches; \ | |
2165 | if (ph->needs_swap) \ | |
2166 | c.v = bswap_32(c.v); \ | |
2167 | ||
2168 | _R(level) | |
2169 | _R(line_size) | |
2170 | _R(sets) | |
2171 | _R(ways) | |
2172 | #undef _R | |
2173 | ||
2174 | #define _R(v) \ | |
2175 | c.v = do_read_string(fd, ph); \ | |
2176 | if (!c.v) \ | |
2177 | goto out_free_caches; | |
2178 | ||
2179 | _R(type) | |
2180 | _R(size) | |
2181 | _R(map) | |
2182 | #undef _R | |
2183 | ||
2184 | caches[i] = c; | |
2185 | } | |
2186 | ||
2187 | ph->env.caches = caches; | |
2188 | ph->env.caches_cnt = cnt; | |
2189 | return 0; | |
2190 | out_free_caches: | |
2191 | free(caches); | |
2192 | return -1; | |
2193 | } | |
2194 | ||
fbe96f29 SE |
2195 | struct feature_ops { |
2196 | int (*write)(int fd, struct perf_header *h, struct perf_evlist *evlist); | |
2197 | void (*print)(struct perf_header *h, int fd, FILE *fp); | |
f1c67db7 | 2198 | int (*process)(struct perf_file_section *section, |
3d7eb86b | 2199 | struct perf_header *h, int fd, void *data); |
fbe96f29 SE |
2200 | const char *name; |
2201 | bool full_only; | |
2202 | }; | |
2203 | ||
8cdfa78a RR |
2204 | #define FEAT_OPA(n, func) \ |
2205 | [n] = { .name = #n, .write = write_##func, .print = print_##func } | |
f1c67db7 RR |
2206 | #define FEAT_OPP(n, func) \ |
2207 | [n] = { .name = #n, .write = write_##func, .print = print_##func, \ | |
2208 | .process = process_##func } | |
8cdfa78a | 2209 | #define FEAT_OPF(n, func) \ |
f1c67db7 | 2210 | [n] = { .name = #n, .write = write_##func, .print = print_##func, \ |
a1ae5655 | 2211 | .process = process_##func, .full_only = true } |
8cdfa78a RR |
2212 | |
2213 | /* feature_ops not implemented: */ | |
2eeaaa09 SE |
2214 | #define print_tracing_data NULL |
2215 | #define print_build_id NULL | |
fbe96f29 SE |
2216 | |
2217 | static const struct feature_ops feat_ops[HEADER_LAST_FEATURE] = { | |
2eeaaa09 | 2218 | FEAT_OPP(HEADER_TRACING_DATA, tracing_data), |
f1c67db7 | 2219 | FEAT_OPP(HEADER_BUILD_ID, build_id), |
a1ae5655 NK |
2220 | FEAT_OPP(HEADER_HOSTNAME, hostname), |
2221 | FEAT_OPP(HEADER_OSRELEASE, osrelease), | |
2222 | FEAT_OPP(HEADER_VERSION, version), | |
2223 | FEAT_OPP(HEADER_ARCH, arch), | |
2224 | FEAT_OPP(HEADER_NRCPUS, nrcpus), | |
2225 | FEAT_OPP(HEADER_CPUDESC, cpudesc), | |
37e9d750 | 2226 | FEAT_OPP(HEADER_CPUID, cpuid), |
a1ae5655 | 2227 | FEAT_OPP(HEADER_TOTAL_MEM, total_mem), |
7c2f7afd | 2228 | FEAT_OPP(HEADER_EVENT_DESC, event_desc), |
a1ae5655 | 2229 | FEAT_OPP(HEADER_CMDLINE, cmdline), |
8cdfa78a RR |
2230 | FEAT_OPF(HEADER_CPU_TOPOLOGY, cpu_topology), |
2231 | FEAT_OPF(HEADER_NUMA_TOPOLOGY, numa_topology), | |
330aa675 | 2232 | FEAT_OPA(HEADER_BRANCH_STACK, branch_stack), |
a1ae5655 | 2233 | FEAT_OPP(HEADER_PMU_MAPPINGS, pmu_mappings), |
a8bb559b | 2234 | FEAT_OPP(HEADER_GROUP_DESC, group_desc), |
99fa2984 | 2235 | FEAT_OPP(HEADER_AUXTRACE, auxtrace), |
ffa517ad | 2236 | FEAT_OPA(HEADER_STAT, stat), |
720e98b5 | 2237 | FEAT_OPF(HEADER_CACHE, cache), |
fbe96f29 SE |
2238 | }; |
2239 | ||
2240 | struct header_print_data { | |
2241 | FILE *fp; | |
2242 | bool full; /* extended list of headers */ | |
2243 | }; | |
2244 | ||
2245 | static int perf_file_section__fprintf_info(struct perf_file_section *section, | |
2246 | struct perf_header *ph, | |
2247 | int feat, int fd, void *data) | |
2248 | { | |
2249 | struct header_print_data *hd = data; | |
2250 | ||
2251 | if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) { | |
2252 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " | |
2253 | "%d, continuing...\n", section->offset, feat); | |
2254 | return 0; | |
2255 | } | |
b1e5a9be | 2256 | if (feat >= HEADER_LAST_FEATURE) { |
fbe96f29 | 2257 | pr_warning("unknown feature %d\n", feat); |
f7a8a133 | 2258 | return 0; |
fbe96f29 SE |
2259 | } |
2260 | if (!feat_ops[feat].print) | |
2261 | return 0; | |
2262 | ||
2263 | if (!feat_ops[feat].full_only || hd->full) | |
2264 | feat_ops[feat].print(ph, fd, hd->fp); | |
2265 | else | |
2266 | fprintf(hd->fp, "# %s info available, use -I to display\n", | |
2267 | feat_ops[feat].name); | |
2268 | ||
2269 | return 0; | |
2270 | } | |
2271 | ||
2272 | int perf_header__fprintf_info(struct perf_session *session, FILE *fp, bool full) | |
2273 | { | |
2274 | struct header_print_data hd; | |
2275 | struct perf_header *header = &session->header; | |
cc9784bd | 2276 | int fd = perf_data_file__fd(session->file); |
f45f5615 | 2277 | struct stat st; |
aabae165 | 2278 | int ret, bit; |
f45f5615 | 2279 | |
fbe96f29 SE |
2280 | hd.fp = fp; |
2281 | hd.full = full; | |
2282 | ||
f45f5615 JO |
2283 | ret = fstat(fd, &st); |
2284 | if (ret == -1) | |
2285 | return -1; | |
2286 | ||
2287 | fprintf(fp, "# captured on: %s", ctime(&st.st_ctime)); | |
2288 | ||
fbe96f29 SE |
2289 | perf_header__process_sections(header, fd, &hd, |
2290 | perf_file_section__fprintf_info); | |
aabae165 | 2291 | |
c9d1c934 DCC |
2292 | if (session->file->is_pipe) |
2293 | return 0; | |
2294 | ||
aabae165 JO |
2295 | fprintf(fp, "# missing features: "); |
2296 | for_each_clear_bit(bit, header->adds_features, HEADER_LAST_FEATURE) { | |
2297 | if (bit) | |
2298 | fprintf(fp, "%s ", feat_ops[bit].name); | |
2299 | } | |
2300 | ||
2301 | fprintf(fp, "\n"); | |
fbe96f29 SE |
2302 | return 0; |
2303 | } | |
2304 | ||
fbe96f29 SE |
2305 | static int do_write_feat(int fd, struct perf_header *h, int type, |
2306 | struct perf_file_section **p, | |
2307 | struct perf_evlist *evlist) | |
2308 | { | |
2309 | int err; | |
2310 | int ret = 0; | |
2311 | ||
2312 | if (perf_header__has_feat(h, type)) { | |
b1e5a9be RR |
2313 | if (!feat_ops[type].write) |
2314 | return -1; | |
fbe96f29 SE |
2315 | |
2316 | (*p)->offset = lseek(fd, 0, SEEK_CUR); | |
2317 | ||
2318 | err = feat_ops[type].write(fd, h, evlist); | |
2319 | if (err < 0) { | |
0c2aff4c | 2320 | pr_debug("failed to write feature %s\n", feat_ops[type].name); |
fbe96f29 SE |
2321 | |
2322 | /* undo anything written */ | |
2323 | lseek(fd, (*p)->offset, SEEK_SET); | |
2324 | ||
2325 | return -1; | |
2326 | } | |
2327 | (*p)->size = lseek(fd, 0, SEEK_CUR) - (*p)->offset; | |
2328 | (*p)++; | |
2329 | } | |
2330 | return ret; | |
2331 | } | |
2332 | ||
1c0b04d1 | 2333 | static int perf_header__adds_write(struct perf_header *header, |
361c99a6 | 2334 | struct perf_evlist *evlist, int fd) |
2ba08250 | 2335 | { |
9e827dd0 | 2336 | int nr_sections; |
fbe96f29 | 2337 | struct perf_file_section *feat_sec, *p; |
9e827dd0 FW |
2338 | int sec_size; |
2339 | u64 sec_start; | |
b1e5a9be | 2340 | int feat; |
fbe96f29 | 2341 | int err; |
9e827dd0 | 2342 | |
1c0b04d1 | 2343 | nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS); |
9e827dd0 | 2344 | if (!nr_sections) |
d5eed904 | 2345 | return 0; |
9e827dd0 | 2346 | |
91b98804 | 2347 | feat_sec = p = calloc(nr_sections, sizeof(*feat_sec)); |
d5eed904 ACM |
2348 | if (feat_sec == NULL) |
2349 | return -ENOMEM; | |
9e827dd0 FW |
2350 | |
2351 | sec_size = sizeof(*feat_sec) * nr_sections; | |
2352 | ||
8d541e97 | 2353 | sec_start = header->feat_offset; |
f887f301 | 2354 | lseek(fd, sec_start + sec_size, SEEK_SET); |
2ba08250 | 2355 | |
b1e5a9be RR |
2356 | for_each_set_bit(feat, header->adds_features, HEADER_FEAT_BITS) { |
2357 | if (do_write_feat(fd, header, feat, &p, evlist)) | |
2358 | perf_header__clear_feat(header, feat); | |
2359 | } | |
9e827dd0 | 2360 | |
f887f301 | 2361 | lseek(fd, sec_start, SEEK_SET); |
fbe96f29 SE |
2362 | /* |
2363 | * may write more than needed due to dropped feature, but | |
2364 | * this is okay, reader will skip the mising entries | |
2365 | */ | |
d5eed904 ACM |
2366 | err = do_write(fd, feat_sec, sec_size); |
2367 | if (err < 0) | |
2368 | pr_debug("failed to write feature section\n"); | |
9e827dd0 | 2369 | free(feat_sec); |
d5eed904 | 2370 | return err; |
9e827dd0 | 2371 | } |
2ba08250 | 2372 | |
8dc58101 TZ |
2373 | int perf_header__write_pipe(int fd) |
2374 | { | |
2375 | struct perf_pipe_file_header f_header; | |
2376 | int err; | |
2377 | ||
2378 | f_header = (struct perf_pipe_file_header){ | |
2379 | .magic = PERF_MAGIC, | |
2380 | .size = sizeof(f_header), | |
2381 | }; | |
2382 | ||
2383 | err = do_write(fd, &f_header, sizeof(f_header)); | |
2384 | if (err < 0) { | |
2385 | pr_debug("failed to write perf pipe header\n"); | |
2386 | return err; | |
2387 | } | |
2388 | ||
2389 | return 0; | |
2390 | } | |
2391 | ||
a91e5431 ACM |
2392 | int perf_session__write_header(struct perf_session *session, |
2393 | struct perf_evlist *evlist, | |
2394 | int fd, bool at_exit) | |
7c6a1c65 PZ |
2395 | { |
2396 | struct perf_file_header f_header; | |
2397 | struct perf_file_attr f_attr; | |
1c0b04d1 | 2398 | struct perf_header *header = &session->header; |
563aecb2 | 2399 | struct perf_evsel *evsel; |
944d62ba | 2400 | u64 attr_offset; |
a91e5431 | 2401 | int err; |
7c6a1c65 PZ |
2402 | |
2403 | lseek(fd, sizeof(f_header), SEEK_SET); | |
2404 | ||
e5cadb93 | 2405 | evlist__for_each_entry(session->evlist, evsel) { |
6606f873 RR |
2406 | evsel->id_offset = lseek(fd, 0, SEEK_CUR); |
2407 | err = do_write(fd, evsel->id, evsel->ids * sizeof(u64)); | |
d5eed904 ACM |
2408 | if (err < 0) { |
2409 | pr_debug("failed to write perf header\n"); | |
2410 | return err; | |
2411 | } | |
7c6a1c65 PZ |
2412 | } |
2413 | ||
944d62ba | 2414 | attr_offset = lseek(fd, 0, SEEK_CUR); |
7c6a1c65 | 2415 | |
e5cadb93 | 2416 | evlist__for_each_entry(evlist, evsel) { |
7c6a1c65 | 2417 | f_attr = (struct perf_file_attr){ |
6606f873 | 2418 | .attr = evsel->attr, |
7c6a1c65 | 2419 | .ids = { |
6606f873 RR |
2420 | .offset = evsel->id_offset, |
2421 | .size = evsel->ids * sizeof(u64), | |
7c6a1c65 PZ |
2422 | } |
2423 | }; | |
d5eed904 ACM |
2424 | err = do_write(fd, &f_attr, sizeof(f_attr)); |
2425 | if (err < 0) { | |
2426 | pr_debug("failed to write perf header attribute\n"); | |
2427 | return err; | |
2428 | } | |
7c6a1c65 PZ |
2429 | } |
2430 | ||
d645c442 AH |
2431 | if (!header->data_offset) |
2432 | header->data_offset = lseek(fd, 0, SEEK_CUR); | |
8d541e97 | 2433 | header->feat_offset = header->data_offset + header->data_size; |
7c6a1c65 | 2434 | |
d5eed904 | 2435 | if (at_exit) { |
1c0b04d1 | 2436 | err = perf_header__adds_write(header, evlist, fd); |
d5eed904 ACM |
2437 | if (err < 0) |
2438 | return err; | |
2439 | } | |
9e827dd0 | 2440 | |
7c6a1c65 PZ |
2441 | f_header = (struct perf_file_header){ |
2442 | .magic = PERF_MAGIC, | |
2443 | .size = sizeof(f_header), | |
2444 | .attr_size = sizeof(f_attr), | |
2445 | .attrs = { | |
944d62ba | 2446 | .offset = attr_offset, |
a91e5431 | 2447 | .size = evlist->nr_entries * sizeof(f_attr), |
7c6a1c65 PZ |
2448 | }, |
2449 | .data = { | |
1c0b04d1 ACM |
2450 | .offset = header->data_offset, |
2451 | .size = header->data_size, | |
7c6a1c65 | 2452 | }, |
44b3c578 | 2453 | /* event_types is ignored, store zeros */ |
7c6a1c65 PZ |
2454 | }; |
2455 | ||
1c0b04d1 | 2456 | memcpy(&f_header.adds_features, &header->adds_features, sizeof(header->adds_features)); |
2ba08250 | 2457 | |
7c6a1c65 | 2458 | lseek(fd, 0, SEEK_SET); |
d5eed904 ACM |
2459 | err = do_write(fd, &f_header, sizeof(f_header)); |
2460 | if (err < 0) { | |
2461 | pr_debug("failed to write perf header\n"); | |
2462 | return err; | |
2463 | } | |
1c0b04d1 | 2464 | lseek(fd, header->data_offset + header->data_size, SEEK_SET); |
7c6a1c65 | 2465 | |
d5eed904 | 2466 | return 0; |
7c6a1c65 PZ |
2467 | } |
2468 | ||
1c0b04d1 | 2469 | static int perf_header__getbuffer64(struct perf_header *header, |
ba21594c ACM |
2470 | int fd, void *buf, size_t size) |
2471 | { | |
1e7972cc | 2472 | if (readn(fd, buf, size) <= 0) |
ba21594c ACM |
2473 | return -1; |
2474 | ||
1c0b04d1 | 2475 | if (header->needs_swap) |
ba21594c ACM |
2476 | mem_bswap_64(buf, size); |
2477 | ||
2478 | return 0; | |
2479 | } | |
2480 | ||
1c0b04d1 | 2481 | int perf_header__process_sections(struct perf_header *header, int fd, |
fbe96f29 | 2482 | void *data, |
1c0b04d1 | 2483 | int (*process)(struct perf_file_section *section, |
b1e5a9be RR |
2484 | struct perf_header *ph, |
2485 | int feat, int fd, void *data)) | |
2ba08250 | 2486 | { |
b1e5a9be | 2487 | struct perf_file_section *feat_sec, *sec; |
9e827dd0 FW |
2488 | int nr_sections; |
2489 | int sec_size; | |
b1e5a9be RR |
2490 | int feat; |
2491 | int err; | |
9e827dd0 | 2492 | |
1c0b04d1 | 2493 | nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS); |
9e827dd0 | 2494 | if (!nr_sections) |
37562eac | 2495 | return 0; |
9e827dd0 | 2496 | |
91b98804 | 2497 | feat_sec = sec = calloc(nr_sections, sizeof(*feat_sec)); |
9e827dd0 | 2498 | if (!feat_sec) |
37562eac | 2499 | return -1; |
9e827dd0 FW |
2500 | |
2501 | sec_size = sizeof(*feat_sec) * nr_sections; | |
2502 | ||
8d541e97 | 2503 | lseek(fd, header->feat_offset, SEEK_SET); |
9e827dd0 | 2504 | |
b1e5a9be RR |
2505 | err = perf_header__getbuffer64(header, fd, feat_sec, sec_size); |
2506 | if (err < 0) | |
769885f3 | 2507 | goto out_free; |
9e827dd0 | 2508 | |
b1e5a9be RR |
2509 | for_each_set_bit(feat, header->adds_features, HEADER_LAST_FEATURE) { |
2510 | err = process(sec++, header, feat, fd, data); | |
2511 | if (err < 0) | |
2512 | goto out_free; | |
2ba08250 | 2513 | } |
b1e5a9be | 2514 | err = 0; |
769885f3 | 2515 | out_free: |
37562eac ACM |
2516 | free(feat_sec); |
2517 | return err; | |
769885f3 | 2518 | } |
4778d2e4 | 2519 | |
114382a0 SE |
2520 | static const int attr_file_abi_sizes[] = { |
2521 | [0] = PERF_ATTR_SIZE_VER0, | |
2522 | [1] = PERF_ATTR_SIZE_VER1, | |
239cc478 | 2523 | [2] = PERF_ATTR_SIZE_VER2, |
0f6a3015 | 2524 | [3] = PERF_ATTR_SIZE_VER3, |
6a21c0b5 | 2525 | [4] = PERF_ATTR_SIZE_VER4, |
114382a0 SE |
2526 | 0, |
2527 | }; | |
2528 | ||
2529 | /* | |
2530 | * In the legacy file format, the magic number is not used to encode endianness. | |
2531 | * hdr_sz was used to encode endianness. But given that hdr_sz can vary based | |
2532 | * on ABI revisions, we need to try all combinations for all endianness to | |
2533 | * detect the endianness. | |
2534 | */ | |
2535 | static int try_all_file_abis(uint64_t hdr_sz, struct perf_header *ph) | |
73323f54 | 2536 | { |
114382a0 SE |
2537 | uint64_t ref_size, attr_size; |
2538 | int i; | |
73323f54 | 2539 | |
114382a0 SE |
2540 | for (i = 0 ; attr_file_abi_sizes[i]; i++) { |
2541 | ref_size = attr_file_abi_sizes[i] | |
2542 | + sizeof(struct perf_file_section); | |
2543 | if (hdr_sz != ref_size) { | |
2544 | attr_size = bswap_64(hdr_sz); | |
2545 | if (attr_size != ref_size) | |
2546 | continue; | |
73323f54 | 2547 | |
114382a0 SE |
2548 | ph->needs_swap = true; |
2549 | } | |
2550 | pr_debug("ABI%d perf.data file detected, need_swap=%d\n", | |
2551 | i, | |
2552 | ph->needs_swap); | |
2553 | return 0; | |
2554 | } | |
2555 | /* could not determine endianness */ | |
2556 | return -1; | |
2557 | } | |
73323f54 | 2558 | |
114382a0 SE |
2559 | #define PERF_PIPE_HDR_VER0 16 |
2560 | ||
2561 | static const size_t attr_pipe_abi_sizes[] = { | |
2562 | [0] = PERF_PIPE_HDR_VER0, | |
2563 | 0, | |
2564 | }; | |
2565 | ||
2566 | /* | |
2567 | * In the legacy pipe format, there is an implicit assumption that endiannesss | |
2568 | * between host recording the samples, and host parsing the samples is the | |
2569 | * same. This is not always the case given that the pipe output may always be | |
2570 | * redirected into a file and analyzed on a different machine with possibly a | |
2571 | * different endianness and perf_event ABI revsions in the perf tool itself. | |
2572 | */ | |
2573 | static int try_all_pipe_abis(uint64_t hdr_sz, struct perf_header *ph) | |
2574 | { | |
2575 | u64 attr_size; | |
2576 | int i; | |
2577 | ||
2578 | for (i = 0 ; attr_pipe_abi_sizes[i]; i++) { | |
2579 | if (hdr_sz != attr_pipe_abi_sizes[i]) { | |
2580 | attr_size = bswap_64(hdr_sz); | |
2581 | if (attr_size != hdr_sz) | |
2582 | continue; | |
73323f54 SE |
2583 | |
2584 | ph->needs_swap = true; | |
2585 | } | |
114382a0 | 2586 | pr_debug("Pipe ABI%d perf.data file detected\n", i); |
73323f54 SE |
2587 | return 0; |
2588 | } | |
114382a0 SE |
2589 | return -1; |
2590 | } | |
2591 | ||
e84ba4e2 FT |
2592 | bool is_perf_magic(u64 magic) |
2593 | { | |
2594 | if (!memcmp(&magic, __perf_magic1, sizeof(magic)) | |
2595 | || magic == __perf_magic2 | |
2596 | || magic == __perf_magic2_sw) | |
2597 | return true; | |
2598 | ||
2599 | return false; | |
2600 | } | |
2601 | ||
114382a0 SE |
2602 | static int check_magic_endian(u64 magic, uint64_t hdr_sz, |
2603 | bool is_pipe, struct perf_header *ph) | |
2604 | { | |
2605 | int ret; | |
2606 | ||
2607 | /* check for legacy format */ | |
2608 | ret = memcmp(&magic, __perf_magic1, sizeof(magic)); | |
2609 | if (ret == 0) { | |
2a08c3ec | 2610 | ph->version = PERF_HEADER_VERSION_1; |
114382a0 SE |
2611 | pr_debug("legacy perf.data format\n"); |
2612 | if (is_pipe) | |
2613 | return try_all_pipe_abis(hdr_sz, ph); | |
2614 | ||
2615 | return try_all_file_abis(hdr_sz, ph); | |
2616 | } | |
2617 | /* | |
2618 | * the new magic number serves two purposes: | |
2619 | * - unique number to identify actual perf.data files | |
2620 | * - encode endianness of file | |
2621 | */ | |
f7913971 | 2622 | ph->version = PERF_HEADER_VERSION_2; |
73323f54 | 2623 | |
114382a0 SE |
2624 | /* check magic number with one endianness */ |
2625 | if (magic == __perf_magic2) | |
73323f54 SE |
2626 | return 0; |
2627 | ||
114382a0 SE |
2628 | /* check magic number with opposite endianness */ |
2629 | if (magic != __perf_magic2_sw) | |
73323f54 SE |
2630 | return -1; |
2631 | ||
2632 | ph->needs_swap = true; | |
2633 | ||
2634 | return 0; | |
2635 | } | |
2636 | ||
1c0b04d1 | 2637 | int perf_file_header__read(struct perf_file_header *header, |
37562eac ACM |
2638 | struct perf_header *ph, int fd) |
2639 | { | |
727ebd54 | 2640 | ssize_t ret; |
73323f54 | 2641 | |
37562eac | 2642 | lseek(fd, 0, SEEK_SET); |
37562eac | 2643 | |
73323f54 SE |
2644 | ret = readn(fd, header, sizeof(*header)); |
2645 | if (ret <= 0) | |
37562eac ACM |
2646 | return -1; |
2647 | ||
114382a0 SE |
2648 | if (check_magic_endian(header->magic, |
2649 | header->attr_size, false, ph) < 0) { | |
2650 | pr_debug("magic/endian check failed\n"); | |
73323f54 | 2651 | return -1; |
114382a0 | 2652 | } |
ba21594c | 2653 | |
73323f54 | 2654 | if (ph->needs_swap) { |
1c0b04d1 | 2655 | mem_bswap_64(header, offsetof(struct perf_file_header, |
73323f54 | 2656 | adds_features)); |
ba21594c ACM |
2657 | } |
2658 | ||
1c0b04d1 | 2659 | if (header->size != sizeof(*header)) { |
37562eac | 2660 | /* Support the previous format */ |
1c0b04d1 ACM |
2661 | if (header->size == offsetof(typeof(*header), adds_features)) |
2662 | bitmap_zero(header->adds_features, HEADER_FEAT_BITS); | |
37562eac ACM |
2663 | else |
2664 | return -1; | |
d327fa43 | 2665 | } else if (ph->needs_swap) { |
d327fa43 DA |
2666 | /* |
2667 | * feature bitmap is declared as an array of unsigned longs -- | |
2668 | * not good since its size can differ between the host that | |
2669 | * generated the data file and the host analyzing the file. | |
2670 | * | |
2671 | * We need to handle endianness, but we don't know the size of | |
2672 | * the unsigned long where the file was generated. Take a best | |
2673 | * guess at determining it: try 64-bit swap first (ie., file | |
2674 | * created on a 64-bit host), and check if the hostname feature | |
2675 | * bit is set (this feature bit is forced on as of fbe96f2). | |
2676 | * If the bit is not, undo the 64-bit swap and try a 32-bit | |
2677 | * swap. If the hostname bit is still not set (e.g., older data | |
2678 | * file), punt and fallback to the original behavior -- | |
2679 | * clearing all feature bits and setting buildid. | |
2680 | */ | |
80c0120a DA |
2681 | mem_bswap_64(&header->adds_features, |
2682 | BITS_TO_U64(HEADER_FEAT_BITS)); | |
d327fa43 DA |
2683 | |
2684 | if (!test_bit(HEADER_HOSTNAME, header->adds_features)) { | |
80c0120a DA |
2685 | /* unswap as u64 */ |
2686 | mem_bswap_64(&header->adds_features, | |
2687 | BITS_TO_U64(HEADER_FEAT_BITS)); | |
2688 | ||
2689 | /* unswap as u32 */ | |
2690 | mem_bswap_32(&header->adds_features, | |
2691 | BITS_TO_U32(HEADER_FEAT_BITS)); | |
d327fa43 DA |
2692 | } |
2693 | ||
2694 | if (!test_bit(HEADER_HOSTNAME, header->adds_features)) { | |
2695 | bitmap_zero(header->adds_features, HEADER_FEAT_BITS); | |
2696 | set_bit(HEADER_BUILD_ID, header->adds_features); | |
2697 | } | |
4778d2e4 | 2698 | } |
9e827dd0 | 2699 | |
1c0b04d1 | 2700 | memcpy(&ph->adds_features, &header->adds_features, |
ba21594c | 2701 | sizeof(ph->adds_features)); |
37562eac | 2702 | |
1c0b04d1 ACM |
2703 | ph->data_offset = header->data.offset; |
2704 | ph->data_size = header->data.size; | |
8d541e97 | 2705 | ph->feat_offset = header->data.offset + header->data.size; |
37562eac ACM |
2706 | return 0; |
2707 | } | |
2708 | ||
1c0b04d1 | 2709 | static int perf_file_section__process(struct perf_file_section *section, |
ba21594c | 2710 | struct perf_header *ph, |
da378962 | 2711 | int feat, int fd, void *data) |
37562eac | 2712 | { |
1c0b04d1 | 2713 | if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) { |
9486aa38 | 2714 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " |
1c0b04d1 | 2715 | "%d, continuing...\n", section->offset, feat); |
37562eac ACM |
2716 | return 0; |
2717 | } | |
2718 | ||
b1e5a9be RR |
2719 | if (feat >= HEADER_LAST_FEATURE) { |
2720 | pr_debug("unknown feature %d, continuing...\n", feat); | |
2721 | return 0; | |
2722 | } | |
2723 | ||
f1c67db7 RR |
2724 | if (!feat_ops[feat].process) |
2725 | return 0; | |
37562eac | 2726 | |
3d7eb86b | 2727 | return feat_ops[feat].process(section, ph, fd, data); |
37562eac | 2728 | } |
2ba08250 | 2729 | |
1c0b04d1 | 2730 | static int perf_file_header__read_pipe(struct perf_pipe_file_header *header, |
454c407e TZ |
2731 | struct perf_header *ph, int fd, |
2732 | bool repipe) | |
7c6a1c65 | 2733 | { |
727ebd54 | 2734 | ssize_t ret; |
73323f54 SE |
2735 | |
2736 | ret = readn(fd, header, sizeof(*header)); | |
2737 | if (ret <= 0) | |
2738 | return -1; | |
2739 | ||
114382a0 SE |
2740 | if (check_magic_endian(header->magic, header->size, true, ph) < 0) { |
2741 | pr_debug("endian/magic failed\n"); | |
8dc58101 | 2742 | return -1; |
114382a0 SE |
2743 | } |
2744 | ||
2745 | if (ph->needs_swap) | |
2746 | header->size = bswap_64(header->size); | |
8dc58101 | 2747 | |
1c0b04d1 | 2748 | if (repipe && do_write(STDOUT_FILENO, header, sizeof(*header)) < 0) |
454c407e TZ |
2749 | return -1; |
2750 | ||
8dc58101 TZ |
2751 | return 0; |
2752 | } | |
2753 | ||
d4339569 | 2754 | static int perf_header__read_pipe(struct perf_session *session) |
8dc58101 | 2755 | { |
1c0b04d1 | 2756 | struct perf_header *header = &session->header; |
8dc58101 TZ |
2757 | struct perf_pipe_file_header f_header; |
2758 | ||
cc9784bd JO |
2759 | if (perf_file_header__read_pipe(&f_header, header, |
2760 | perf_data_file__fd(session->file), | |
454c407e | 2761 | session->repipe) < 0) { |
8dc58101 TZ |
2762 | pr_debug("incompatible file format\n"); |
2763 | return -EINVAL; | |
2764 | } | |
2765 | ||
8dc58101 TZ |
2766 | return 0; |
2767 | } | |
2768 | ||
69996df4 SE |
2769 | static int read_attr(int fd, struct perf_header *ph, |
2770 | struct perf_file_attr *f_attr) | |
2771 | { | |
2772 | struct perf_event_attr *attr = &f_attr->attr; | |
2773 | size_t sz, left; | |
2774 | size_t our_sz = sizeof(f_attr->attr); | |
727ebd54 | 2775 | ssize_t ret; |
69996df4 SE |
2776 | |
2777 | memset(f_attr, 0, sizeof(*f_attr)); | |
2778 | ||
2779 | /* read minimal guaranteed structure */ | |
2780 | ret = readn(fd, attr, PERF_ATTR_SIZE_VER0); | |
2781 | if (ret <= 0) { | |
2782 | pr_debug("cannot read %d bytes of header attr\n", | |
2783 | PERF_ATTR_SIZE_VER0); | |
2784 | return -1; | |
2785 | } | |
2786 | ||
2787 | /* on file perf_event_attr size */ | |
2788 | sz = attr->size; | |
114382a0 | 2789 | |
69996df4 SE |
2790 | if (ph->needs_swap) |
2791 | sz = bswap_32(sz); | |
2792 | ||
2793 | if (sz == 0) { | |
2794 | /* assume ABI0 */ | |
2795 | sz = PERF_ATTR_SIZE_VER0; | |
2796 | } else if (sz > our_sz) { | |
2797 | pr_debug("file uses a more recent and unsupported ABI" | |
2798 | " (%zu bytes extra)\n", sz - our_sz); | |
2799 | return -1; | |
2800 | } | |
2801 | /* what we have not yet read and that we know about */ | |
2802 | left = sz - PERF_ATTR_SIZE_VER0; | |
2803 | if (left) { | |
2804 | void *ptr = attr; | |
2805 | ptr += PERF_ATTR_SIZE_VER0; | |
2806 | ||
2807 | ret = readn(fd, ptr, left); | |
2808 | } | |
2809 | /* read perf_file_section, ids are read in caller */ | |
2810 | ret = readn(fd, &f_attr->ids, sizeof(f_attr->ids)); | |
2811 | ||
2812 | return ret <= 0 ? -1 : 0; | |
2813 | } | |
2814 | ||
831394bd NK |
2815 | static int perf_evsel__prepare_tracepoint_event(struct perf_evsel *evsel, |
2816 | struct pevent *pevent) | |
cb9dd49e | 2817 | { |
831394bd | 2818 | struct event_format *event; |
cb9dd49e ACM |
2819 | char bf[128]; |
2820 | ||
831394bd NK |
2821 | /* already prepared */ |
2822 | if (evsel->tp_format) | |
2823 | return 0; | |
2824 | ||
3dce2ce3 NK |
2825 | if (pevent == NULL) { |
2826 | pr_debug("broken or missing trace data\n"); | |
2827 | return -1; | |
2828 | } | |
2829 | ||
831394bd | 2830 | event = pevent_find_event(pevent, evsel->attr.config); |
a7619aef NK |
2831 | if (event == NULL) { |
2832 | pr_debug("cannot find event format for %d\n", (int)evsel->attr.config); | |
cb9dd49e | 2833 | return -1; |
a7619aef | 2834 | } |
cb9dd49e | 2835 | |
831394bd NK |
2836 | if (!evsel->name) { |
2837 | snprintf(bf, sizeof(bf), "%s:%s", event->system, event->name); | |
2838 | evsel->name = strdup(bf); | |
2839 | if (evsel->name == NULL) | |
2840 | return -1; | |
2841 | } | |
cb9dd49e | 2842 | |
fcf65bf1 | 2843 | evsel->tp_format = event; |
cb9dd49e ACM |
2844 | return 0; |
2845 | } | |
2846 | ||
831394bd NK |
2847 | static int perf_evlist__prepare_tracepoint_events(struct perf_evlist *evlist, |
2848 | struct pevent *pevent) | |
cb9dd49e ACM |
2849 | { |
2850 | struct perf_evsel *pos; | |
2851 | ||
e5cadb93 | 2852 | evlist__for_each_entry(evlist, pos) { |
831394bd NK |
2853 | if (pos->attr.type == PERF_TYPE_TRACEPOINT && |
2854 | perf_evsel__prepare_tracepoint_event(pos, pevent)) | |
cb9dd49e ACM |
2855 | return -1; |
2856 | } | |
2857 | ||
2858 | return 0; | |
2859 | } | |
2860 | ||
d4339569 | 2861 | int perf_session__read_header(struct perf_session *session) |
8dc58101 | 2862 | { |
cc9784bd | 2863 | struct perf_data_file *file = session->file; |
1c0b04d1 | 2864 | struct perf_header *header = &session->header; |
ba21594c | 2865 | struct perf_file_header f_header; |
7c6a1c65 PZ |
2866 | struct perf_file_attr f_attr; |
2867 | u64 f_id; | |
7c6a1c65 | 2868 | int nr_attrs, nr_ids, i, j; |
cc9784bd | 2869 | int fd = perf_data_file__fd(file); |
7c6a1c65 | 2870 | |
334fe7a3 | 2871 | session->evlist = perf_evlist__new(); |
a91e5431 ACM |
2872 | if (session->evlist == NULL) |
2873 | return -ENOMEM; | |
2874 | ||
2c07144d | 2875 | session->evlist->env = &header->env; |
4cde998d | 2876 | session->machines.host.env = &header->env; |
cc9784bd | 2877 | if (perf_data_file__is_pipe(file)) |
d4339569 | 2878 | return perf_header__read_pipe(session); |
8dc58101 | 2879 | |
69996df4 | 2880 | if (perf_file_header__read(&f_header, header, fd) < 0) |
4dc0a04b | 2881 | return -EINVAL; |
7c6a1c65 | 2882 | |
b314e5cf NK |
2883 | /* |
2884 | * Sanity check that perf.data was written cleanly; data size is | |
2885 | * initialized to 0 and updated only if the on_exit function is run. | |
2886 | * If data size is still 0 then the file contains only partial | |
2887 | * information. Just warn user and process it as much as it can. | |
2888 | */ | |
2889 | if (f_header.data.size == 0) { | |
2890 | pr_warning("WARNING: The %s file's data size field is 0 which is unexpected.\n" | |
2891 | "Was the 'perf record' command properly terminated?\n", | |
cc9784bd | 2892 | file->path); |
b314e5cf NK |
2893 | } |
2894 | ||
69996df4 | 2895 | nr_attrs = f_header.attrs.size / f_header.attr_size; |
7c6a1c65 PZ |
2896 | lseek(fd, f_header.attrs.offset, SEEK_SET); |
2897 | ||
2898 | for (i = 0; i < nr_attrs; i++) { | |
a91e5431 | 2899 | struct perf_evsel *evsel; |
1c222bce | 2900 | off_t tmp; |
7c6a1c65 | 2901 | |
69996df4 | 2902 | if (read_attr(fd, header, &f_attr) < 0) |
769885f3 | 2903 | goto out_errno; |
ba21594c | 2904 | |
1060ab85 DA |
2905 | if (header->needs_swap) { |
2906 | f_attr.ids.size = bswap_64(f_attr.ids.size); | |
2907 | f_attr.ids.offset = bswap_64(f_attr.ids.offset); | |
eda3913b | 2908 | perf_event__attr_swap(&f_attr.attr); |
1060ab85 | 2909 | } |
eda3913b | 2910 | |
1c222bce | 2911 | tmp = lseek(fd, 0, SEEK_CUR); |
ef503831 | 2912 | evsel = perf_evsel__new(&f_attr.attr); |
7c6a1c65 | 2913 | |
a91e5431 ACM |
2914 | if (evsel == NULL) |
2915 | goto out_delete_evlist; | |
0807d2d8 ACM |
2916 | |
2917 | evsel->needs_swap = header->needs_swap; | |
a91e5431 ACM |
2918 | /* |
2919 | * Do it before so that if perf_evsel__alloc_id fails, this | |
2920 | * entry gets purged too at perf_evlist__delete(). | |
2921 | */ | |
2922 | perf_evlist__add(session->evlist, evsel); | |
7c6a1c65 PZ |
2923 | |
2924 | nr_ids = f_attr.ids.size / sizeof(u64); | |
a91e5431 ACM |
2925 | /* |
2926 | * We don't have the cpu and thread maps on the header, so | |
2927 | * for allocating the perf_sample_id table we fake 1 cpu and | |
2928 | * hattr->ids threads. | |
2929 | */ | |
2930 | if (perf_evsel__alloc_id(evsel, 1, nr_ids)) | |
2931 | goto out_delete_evlist; | |
2932 | ||
7c6a1c65 PZ |
2933 | lseek(fd, f_attr.ids.offset, SEEK_SET); |
2934 | ||
2935 | for (j = 0; j < nr_ids; j++) { | |
1c0b04d1 | 2936 | if (perf_header__getbuffer64(header, fd, &f_id, sizeof(f_id))) |
769885f3 | 2937 | goto out_errno; |
7c6a1c65 | 2938 | |
a91e5431 | 2939 | perf_evlist__id_add(session->evlist, evsel, 0, j, f_id); |
7c6a1c65 | 2940 | } |
11deb1f9 | 2941 | |
7c6a1c65 PZ |
2942 | lseek(fd, tmp, SEEK_SET); |
2943 | } | |
2944 | ||
d04b35f8 ACM |
2945 | symbol_conf.nr_events = nr_attrs; |
2946 | ||
29f5ffd3 | 2947 | perf_header__process_sections(header, fd, &session->tevent, |
fbe96f29 | 2948 | perf_file_section__process); |
4778d2e4 | 2949 | |
831394bd | 2950 | if (perf_evlist__prepare_tracepoint_events(session->evlist, |
29f5ffd3 | 2951 | session->tevent.pevent)) |
cb9dd49e ACM |
2952 | goto out_delete_evlist; |
2953 | ||
4dc0a04b | 2954 | return 0; |
769885f3 ACM |
2955 | out_errno: |
2956 | return -errno; | |
a91e5431 ACM |
2957 | |
2958 | out_delete_evlist: | |
2959 | perf_evlist__delete(session->evlist); | |
2960 | session->evlist = NULL; | |
2961 | return -ENOMEM; | |
7c6a1c65 | 2962 | } |
0d3a5c88 | 2963 | |
45694aa7 | 2964 | int perf_event__synthesize_attr(struct perf_tool *tool, |
f4d83436 | 2965 | struct perf_event_attr *attr, u32 ids, u64 *id, |
743eb868 | 2966 | perf_event__handler_t process) |
2c46dbb5 | 2967 | { |
8115d60c | 2968 | union perf_event *ev; |
2c46dbb5 TZ |
2969 | size_t size; |
2970 | int err; | |
2971 | ||
2972 | size = sizeof(struct perf_event_attr); | |
9ac3e487 | 2973 | size = PERF_ALIGN(size, sizeof(u64)); |
2c46dbb5 TZ |
2974 | size += sizeof(struct perf_event_header); |
2975 | size += ids * sizeof(u64); | |
2976 | ||
2977 | ev = malloc(size); | |
2978 | ||
ce47dc56 CS |
2979 | if (ev == NULL) |
2980 | return -ENOMEM; | |
2981 | ||
2c46dbb5 TZ |
2982 | ev->attr.attr = *attr; |
2983 | memcpy(ev->attr.id, id, ids * sizeof(u64)); | |
2984 | ||
2985 | ev->attr.header.type = PERF_RECORD_HEADER_ATTR; | |
f4d83436 | 2986 | ev->attr.header.size = (u16)size; |
2c46dbb5 | 2987 | |
f4d83436 RR |
2988 | if (ev->attr.header.size == size) |
2989 | err = process(tool, ev, NULL, NULL); | |
2990 | else | |
2991 | err = -E2BIG; | |
2c46dbb5 TZ |
2992 | |
2993 | free(ev); | |
2994 | ||
2995 | return err; | |
2996 | } | |
2997 | ||
a6e52817 JO |
2998 | static struct event_update_event * |
2999 | event_update_event__new(size_t size, u64 type, u64 id) | |
3000 | { | |
3001 | struct event_update_event *ev; | |
3002 | ||
3003 | size += sizeof(*ev); | |
3004 | size = PERF_ALIGN(size, sizeof(u64)); | |
3005 | ||
3006 | ev = zalloc(size); | |
3007 | if (ev) { | |
3008 | ev->header.type = PERF_RECORD_EVENT_UPDATE; | |
3009 | ev->header.size = (u16)size; | |
3010 | ev->type = type; | |
3011 | ev->id = id; | |
3012 | } | |
3013 | return ev; | |
3014 | } | |
3015 | ||
3016 | int | |
3017 | perf_event__synthesize_event_update_unit(struct perf_tool *tool, | |
3018 | struct perf_evsel *evsel, | |
3019 | perf_event__handler_t process) | |
3020 | { | |
3021 | struct event_update_event *ev; | |
3022 | size_t size = strlen(evsel->unit); | |
3023 | int err; | |
3024 | ||
3025 | ev = event_update_event__new(size + 1, PERF_EVENT_UPDATE__UNIT, evsel->id[0]); | |
3026 | if (ev == NULL) | |
3027 | return -ENOMEM; | |
3028 | ||
3029 | strncpy(ev->data, evsel->unit, size); | |
3030 | err = process(tool, (union perf_event *)ev, NULL, NULL); | |
3031 | free(ev); | |
3032 | return err; | |
3033 | } | |
3034 | ||
daeecbc0 JO |
3035 | int |
3036 | perf_event__synthesize_event_update_scale(struct perf_tool *tool, | |
3037 | struct perf_evsel *evsel, | |
3038 | perf_event__handler_t process) | |
3039 | { | |
3040 | struct event_update_event *ev; | |
3041 | struct event_update_event_scale *ev_data; | |
3042 | int err; | |
3043 | ||
3044 | ev = event_update_event__new(sizeof(*ev_data), PERF_EVENT_UPDATE__SCALE, evsel->id[0]); | |
3045 | if (ev == NULL) | |
3046 | return -ENOMEM; | |
3047 | ||
3048 | ev_data = (struct event_update_event_scale *) ev->data; | |
3049 | ev_data->scale = evsel->scale; | |
3050 | err = process(tool, (union perf_event*) ev, NULL, NULL); | |
3051 | free(ev); | |
3052 | return err; | |
3053 | } | |
3054 | ||
802c9048 JO |
3055 | int |
3056 | perf_event__synthesize_event_update_name(struct perf_tool *tool, | |
3057 | struct perf_evsel *evsel, | |
3058 | perf_event__handler_t process) | |
3059 | { | |
3060 | struct event_update_event *ev; | |
3061 | size_t len = strlen(evsel->name); | |
3062 | int err; | |
3063 | ||
3064 | ev = event_update_event__new(len + 1, PERF_EVENT_UPDATE__NAME, evsel->id[0]); | |
3065 | if (ev == NULL) | |
3066 | return -ENOMEM; | |
3067 | ||
3068 | strncpy(ev->data, evsel->name, len); | |
3069 | err = process(tool, (union perf_event*) ev, NULL, NULL); | |
3070 | free(ev); | |
3071 | return err; | |
3072 | } | |
daeecbc0 | 3073 | |
86ebb09f JO |
3074 | int |
3075 | perf_event__synthesize_event_update_cpus(struct perf_tool *tool, | |
3076 | struct perf_evsel *evsel, | |
3077 | perf_event__handler_t process) | |
3078 | { | |
3079 | size_t size = sizeof(struct event_update_event); | |
3080 | struct event_update_event *ev; | |
3081 | int max, err; | |
3082 | u16 type; | |
3083 | ||
3084 | if (!evsel->own_cpus) | |
3085 | return 0; | |
3086 | ||
3087 | ev = cpu_map_data__alloc(evsel->own_cpus, &size, &type, &max); | |
3088 | if (!ev) | |
3089 | return -ENOMEM; | |
3090 | ||
3091 | ev->header.type = PERF_RECORD_EVENT_UPDATE; | |
3092 | ev->header.size = (u16)size; | |
3093 | ev->type = PERF_EVENT_UPDATE__CPUS; | |
3094 | ev->id = evsel->id[0]; | |
3095 | ||
3096 | cpu_map_data__synthesize((struct cpu_map_data *) ev->data, | |
3097 | evsel->own_cpus, | |
3098 | type, max); | |
3099 | ||
3100 | err = process(tool, (union perf_event*) ev, NULL, NULL); | |
3101 | free(ev); | |
3102 | return err; | |
3103 | } | |
3104 | ||
c853f939 JO |
3105 | size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp) |
3106 | { | |
3107 | struct event_update_event *ev = &event->event_update; | |
3108 | struct event_update_event_scale *ev_scale; | |
3109 | struct event_update_event_cpus *ev_cpus; | |
3110 | struct cpu_map *map; | |
3111 | size_t ret; | |
3112 | ||
3113 | ret = fprintf(fp, "\n... id: %" PRIu64 "\n", ev->id); | |
3114 | ||
3115 | switch (ev->type) { | |
3116 | case PERF_EVENT_UPDATE__SCALE: | |
3117 | ev_scale = (struct event_update_event_scale *) ev->data; | |
3118 | ret += fprintf(fp, "... scale: %f\n", ev_scale->scale); | |
3119 | break; | |
3120 | case PERF_EVENT_UPDATE__UNIT: | |
3121 | ret += fprintf(fp, "... unit: %s\n", ev->data); | |
3122 | break; | |
3123 | case PERF_EVENT_UPDATE__NAME: | |
3124 | ret += fprintf(fp, "... name: %s\n", ev->data); | |
3125 | break; | |
3126 | case PERF_EVENT_UPDATE__CPUS: | |
3127 | ev_cpus = (struct event_update_event_cpus *) ev->data; | |
3128 | ret += fprintf(fp, "... "); | |
3129 | ||
3130 | map = cpu_map__new_data(&ev_cpus->cpus); | |
3131 | if (map) | |
3132 | ret += cpu_map__fprintf(map, fp); | |
3133 | else | |
3134 | ret += fprintf(fp, "failed to get cpus\n"); | |
3135 | break; | |
3136 | default: | |
3137 | ret += fprintf(fp, "... unknown type\n"); | |
3138 | break; | |
3139 | } | |
3140 | ||
3141 | return ret; | |
3142 | } | |
86ebb09f | 3143 | |
45694aa7 | 3144 | int perf_event__synthesize_attrs(struct perf_tool *tool, |
d20deb64 | 3145 | struct perf_session *session, |
a91e5431 | 3146 | perf_event__handler_t process) |
2c46dbb5 | 3147 | { |
6606f873 | 3148 | struct perf_evsel *evsel; |
a91e5431 | 3149 | int err = 0; |
2c46dbb5 | 3150 | |
e5cadb93 | 3151 | evlist__for_each_entry(session->evlist, evsel) { |
6606f873 RR |
3152 | err = perf_event__synthesize_attr(tool, &evsel->attr, evsel->ids, |
3153 | evsel->id, process); | |
2c46dbb5 TZ |
3154 | if (err) { |
3155 | pr_debug("failed to create perf header attribute\n"); | |
3156 | return err; | |
3157 | } | |
3158 | } | |
3159 | ||
3160 | return err; | |
3161 | } | |
3162 | ||
47c3d109 AH |
3163 | int perf_event__process_attr(struct perf_tool *tool __maybe_unused, |
3164 | union perf_event *event, | |
10d0f086 | 3165 | struct perf_evlist **pevlist) |
2c46dbb5 | 3166 | { |
f4d83436 | 3167 | u32 i, ids, n_ids; |
a91e5431 | 3168 | struct perf_evsel *evsel; |
10d0f086 | 3169 | struct perf_evlist *evlist = *pevlist; |
2c46dbb5 | 3170 | |
10d0f086 | 3171 | if (evlist == NULL) { |
334fe7a3 | 3172 | *pevlist = evlist = perf_evlist__new(); |
10d0f086 | 3173 | if (evlist == NULL) |
a91e5431 ACM |
3174 | return -ENOMEM; |
3175 | } | |
3176 | ||
ef503831 | 3177 | evsel = perf_evsel__new(&event->attr.attr); |
a91e5431 | 3178 | if (evsel == NULL) |
2c46dbb5 TZ |
3179 | return -ENOMEM; |
3180 | ||
10d0f086 | 3181 | perf_evlist__add(evlist, evsel); |
a91e5431 | 3182 | |
8115d60c ACM |
3183 | ids = event->header.size; |
3184 | ids -= (void *)&event->attr.id - (void *)event; | |
2c46dbb5 | 3185 | n_ids = ids / sizeof(u64); |
a91e5431 ACM |
3186 | /* |
3187 | * We don't have the cpu and thread maps on the header, so | |
3188 | * for allocating the perf_sample_id table we fake 1 cpu and | |
3189 | * hattr->ids threads. | |
3190 | */ | |
3191 | if (perf_evsel__alloc_id(evsel, 1, n_ids)) | |
3192 | return -ENOMEM; | |
2c46dbb5 TZ |
3193 | |
3194 | for (i = 0; i < n_ids; i++) { | |
10d0f086 | 3195 | perf_evlist__id_add(evlist, evsel, 0, i, event->attr.id[i]); |
2c46dbb5 TZ |
3196 | } |
3197 | ||
7e0d6fc9 AH |
3198 | symbol_conf.nr_events = evlist->nr_entries; |
3199 | ||
2c46dbb5 TZ |
3200 | return 0; |
3201 | } | |
cd19a035 | 3202 | |
ffe77725 JO |
3203 | int perf_event__process_event_update(struct perf_tool *tool __maybe_unused, |
3204 | union perf_event *event, | |
3205 | struct perf_evlist **pevlist) | |
3206 | { | |
3207 | struct event_update_event *ev = &event->event_update; | |
daeecbc0 | 3208 | struct event_update_event_scale *ev_scale; |
86ebb09f | 3209 | struct event_update_event_cpus *ev_cpus; |
ffe77725 JO |
3210 | struct perf_evlist *evlist; |
3211 | struct perf_evsel *evsel; | |
86ebb09f | 3212 | struct cpu_map *map; |
ffe77725 JO |
3213 | |
3214 | if (!pevlist || *pevlist == NULL) | |
3215 | return -EINVAL; | |
3216 | ||
3217 | evlist = *pevlist; | |
3218 | ||
3219 | evsel = perf_evlist__id2evsel(evlist, ev->id); | |
3220 | if (evsel == NULL) | |
3221 | return -EINVAL; | |
3222 | ||
a6e52817 JO |
3223 | switch (ev->type) { |
3224 | case PERF_EVENT_UPDATE__UNIT: | |
3225 | evsel->unit = strdup(ev->data); | |
daeecbc0 | 3226 | break; |
802c9048 JO |
3227 | case PERF_EVENT_UPDATE__NAME: |
3228 | evsel->name = strdup(ev->data); | |
3229 | break; | |
daeecbc0 JO |
3230 | case PERF_EVENT_UPDATE__SCALE: |
3231 | ev_scale = (struct event_update_event_scale *) ev->data; | |
3232 | evsel->scale = ev_scale->scale; | |
8434a2ec | 3233 | break; |
86ebb09f JO |
3234 | case PERF_EVENT_UPDATE__CPUS: |
3235 | ev_cpus = (struct event_update_event_cpus *) ev->data; | |
3236 | ||
3237 | map = cpu_map__new_data(&ev_cpus->cpus); | |
3238 | if (map) | |
3239 | evsel->own_cpus = map; | |
3240 | else | |
3241 | pr_err("failed to get event_update cpus\n"); | |
a6e52817 JO |
3242 | default: |
3243 | break; | |
3244 | } | |
3245 | ||
ffe77725 JO |
3246 | return 0; |
3247 | } | |
3248 | ||
45694aa7 | 3249 | int perf_event__synthesize_tracing_data(struct perf_tool *tool, int fd, |
d20deb64 | 3250 | struct perf_evlist *evlist, |
743eb868 | 3251 | perf_event__handler_t process) |
9215545e | 3252 | { |
8115d60c | 3253 | union perf_event ev; |
29208e57 | 3254 | struct tracing_data *tdata; |
9215545e | 3255 | ssize_t size = 0, aligned_size = 0, padding; |
1d037ca1 | 3256 | int err __maybe_unused = 0; |
9215545e | 3257 | |
29208e57 JO |
3258 | /* |
3259 | * We are going to store the size of the data followed | |
3260 | * by the data contents. Since the fd descriptor is a pipe, | |
3261 | * we cannot seek back to store the size of the data once | |
3262 | * we know it. Instead we: | |
3263 | * | |
3264 | * - write the tracing data to the temp file | |
3265 | * - get/write the data size to pipe | |
3266 | * - write the tracing data from the temp file | |
3267 | * to the pipe | |
3268 | */ | |
3269 | tdata = tracing_data_get(&evlist->entries, fd, true); | |
3270 | if (!tdata) | |
3271 | return -1; | |
3272 | ||
9215545e TZ |
3273 | memset(&ev, 0, sizeof(ev)); |
3274 | ||
3275 | ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA; | |
29208e57 | 3276 | size = tdata->size; |
9ac3e487 | 3277 | aligned_size = PERF_ALIGN(size, sizeof(u64)); |
9215545e TZ |
3278 | padding = aligned_size - size; |
3279 | ev.tracing_data.header.size = sizeof(ev.tracing_data); | |
3280 | ev.tracing_data.size = aligned_size; | |
3281 | ||
45694aa7 | 3282 | process(tool, &ev, NULL, NULL); |
9215545e | 3283 | |
29208e57 JO |
3284 | /* |
3285 | * The put function will copy all the tracing data | |
3286 | * stored in temp file to the pipe. | |
3287 | */ | |
3288 | tracing_data_put(tdata); | |
3289 | ||
9215545e TZ |
3290 | write_padded(fd, NULL, 0, padding); |
3291 | ||
3292 | return aligned_size; | |
3293 | } | |
3294 | ||
47c3d109 AH |
3295 | int perf_event__process_tracing_data(struct perf_tool *tool __maybe_unused, |
3296 | union perf_event *event, | |
8115d60c | 3297 | struct perf_session *session) |
9215545e | 3298 | { |
8115d60c | 3299 | ssize_t size_read, padding, size = event->tracing_data.size; |
cc9784bd JO |
3300 | int fd = perf_data_file__fd(session->file); |
3301 | off_t offset = lseek(fd, 0, SEEK_CUR); | |
9215545e TZ |
3302 | char buf[BUFSIZ]; |
3303 | ||
3304 | /* setup for reading amidst mmap */ | |
cc9784bd | 3305 | lseek(fd, offset + sizeof(struct tracing_data_event), |
9215545e TZ |
3306 | SEEK_SET); |
3307 | ||
29f5ffd3 | 3308 | size_read = trace_report(fd, &session->tevent, |
da378962 | 3309 | session->repipe); |
9ac3e487 | 3310 | padding = PERF_ALIGN(size_read, sizeof(u64)) - size_read; |
9215545e | 3311 | |
cc9784bd | 3312 | if (readn(fd, buf, padding) < 0) { |
2caa48a2 ACM |
3313 | pr_err("%s: reading input file", __func__); |
3314 | return -1; | |
3315 | } | |
454c407e TZ |
3316 | if (session->repipe) { |
3317 | int retw = write(STDOUT_FILENO, buf, padding); | |
2caa48a2 ACM |
3318 | if (retw <= 0 || retw != padding) { |
3319 | pr_err("%s: repiping tracing data padding", __func__); | |
3320 | return -1; | |
3321 | } | |
454c407e | 3322 | } |
9215545e | 3323 | |
2caa48a2 ACM |
3324 | if (size_read + padding != size) { |
3325 | pr_err("%s: tracing data size mismatch", __func__); | |
3326 | return -1; | |
3327 | } | |
9215545e | 3328 | |
831394bd | 3329 | perf_evlist__prepare_tracepoint_events(session->evlist, |
29f5ffd3 | 3330 | session->tevent.pevent); |
8b6ee4c5 | 3331 | |
9215545e TZ |
3332 | return size_read + padding; |
3333 | } | |
c7929e47 | 3334 | |
45694aa7 | 3335 | int perf_event__synthesize_build_id(struct perf_tool *tool, |
d20deb64 | 3336 | struct dso *pos, u16 misc, |
8115d60c | 3337 | perf_event__handler_t process, |
743eb868 | 3338 | struct machine *machine) |
c7929e47 | 3339 | { |
8115d60c | 3340 | union perf_event ev; |
c7929e47 TZ |
3341 | size_t len; |
3342 | int err = 0; | |
3343 | ||
3344 | if (!pos->hit) | |
3345 | return err; | |
3346 | ||
3347 | memset(&ev, 0, sizeof(ev)); | |
3348 | ||
3349 | len = pos->long_name_len + 1; | |
9ac3e487 | 3350 | len = PERF_ALIGN(len, NAME_ALIGN); |
c7929e47 TZ |
3351 | memcpy(&ev.build_id.build_id, pos->build_id, sizeof(pos->build_id)); |
3352 | ev.build_id.header.type = PERF_RECORD_HEADER_BUILD_ID; | |
3353 | ev.build_id.header.misc = misc; | |
23346f21 | 3354 | ev.build_id.pid = machine->pid; |
c7929e47 TZ |
3355 | ev.build_id.header.size = sizeof(ev.build_id) + len; |
3356 | memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len); | |
3357 | ||
45694aa7 | 3358 | err = process(tool, &ev, NULL, machine); |
c7929e47 TZ |
3359 | |
3360 | return err; | |
3361 | } | |
3362 | ||
1d037ca1 | 3363 | int perf_event__process_build_id(struct perf_tool *tool __maybe_unused, |
d20deb64 | 3364 | union perf_event *event, |
8115d60c | 3365 | struct perf_session *session) |
c7929e47 | 3366 | { |
8115d60c ACM |
3367 | __event_process_build_id(&event->build_id, |
3368 | event->build_id.filename, | |
a1645ce1 | 3369 | session); |
c7929e47 TZ |
3370 | return 0; |
3371 | } |