Commit | Line | Data |
---|---|---|
a9072bc0 | 1 | #include "util.h" |
7c6a1c65 | 2 | #include <sys/types.h> |
ba21594c | 3 | #include <byteswap.h> |
7c6a1c65 PZ |
4 | #include <unistd.h> |
5 | #include <stdio.h> | |
6 | #include <stdlib.h> | |
8671dab9 | 7 | #include <linux/list.h> |
ba21594c | 8 | #include <linux/kernel.h> |
b1e5a9be | 9 | #include <linux/bitops.h> |
fbe96f29 | 10 | #include <sys/utsname.h> |
7c6a1c65 | 11 | |
361c99a6 | 12 | #include "evlist.h" |
a91e5431 | 13 | #include "evsel.h" |
7c6a1c65 | 14 | #include "header.h" |
03456a15 FW |
15 | #include "../perf.h" |
16 | #include "trace-event.h" | |
301a0b02 | 17 | #include "session.h" |
8671dab9 | 18 | #include "symbol.h" |
4778d2e4 | 19 | #include "debug.h" |
fbe96f29 | 20 | #include "cpumap.h" |
50a9667c | 21 | #include "pmu.h" |
7dbf4dcf | 22 | #include "vdso.h" |
a1ae5655 | 23 | #include "strbuf.h" |
ebb296c2 | 24 | #include "build-id.h" |
cc9784bd | 25 | #include "data.h" |
7c6a1c65 | 26 | |
a1ac1d3c SE |
27 | static bool no_buildid_cache = false; |
28 | ||
fbe96f29 SE |
29 | static u32 header_argc; |
30 | static const char **header_argv; | |
31 | ||
73323f54 SE |
32 | /* |
33 | * magic2 = "PERFILE2" | |
34 | * must be a numerical value to let the endianness | |
35 | * determine the memory layout. That way we are able | |
36 | * to detect endianness when reading the perf.data file | |
37 | * back. | |
38 | * | |
39 | * we check for legacy (PERFFILE) format. | |
40 | */ | |
41 | static const char *__perf_magic1 = "PERFFILE"; | |
42 | static const u64 __perf_magic2 = 0x32454c4946524550ULL; | |
43 | static const u64 __perf_magic2_sw = 0x50455246494c4532ULL; | |
7c6a1c65 | 44 | |
73323f54 | 45 | #define PERF_MAGIC __perf_magic2 |
7c6a1c65 | 46 | |
7c6a1c65 | 47 | struct perf_file_attr { |
cdd6c482 | 48 | struct perf_event_attr attr; |
7c6a1c65 PZ |
49 | struct perf_file_section ids; |
50 | }; | |
51 | ||
1c0b04d1 | 52 | void perf_header__set_feat(struct perf_header *header, int feat) |
8d06367f | 53 | { |
1c0b04d1 | 54 | set_bit(feat, header->adds_features); |
8d06367f ACM |
55 | } |
56 | ||
1c0b04d1 | 57 | void perf_header__clear_feat(struct perf_header *header, int feat) |
baa2f6ce | 58 | { |
1c0b04d1 | 59 | clear_bit(feat, header->adds_features); |
baa2f6ce ACM |
60 | } |
61 | ||
1c0b04d1 | 62 | bool perf_header__has_feat(const struct perf_header *header, int feat) |
8d06367f | 63 | { |
1c0b04d1 | 64 | return test_bit(feat, header->adds_features); |
8d06367f ACM |
65 | } |
66 | ||
3726cc75 | 67 | static int do_write(int fd, const void *buf, size_t size) |
7c6a1c65 PZ |
68 | { |
69 | while (size) { | |
70 | int ret = write(fd, buf, size); | |
71 | ||
72 | if (ret < 0) | |
d5eed904 | 73 | return -errno; |
7c6a1c65 PZ |
74 | |
75 | size -= ret; | |
76 | buf += ret; | |
77 | } | |
3726cc75 ACM |
78 | |
79 | return 0; | |
7c6a1c65 PZ |
80 | } |
81 | ||
f92cb24c ACM |
82 | #define NAME_ALIGN 64 |
83 | ||
84 | static int write_padded(int fd, const void *bf, size_t count, | |
85 | size_t count_aligned) | |
86 | { | |
87 | static const char zero_buf[NAME_ALIGN]; | |
88 | int err = do_write(fd, bf, count); | |
89 | ||
90 | if (!err) | |
91 | err = do_write(fd, zero_buf, count_aligned - count); | |
92 | ||
93 | return err; | |
94 | } | |
95 | ||
fbe96f29 SE |
96 | static int do_write_string(int fd, const char *str) |
97 | { | |
98 | u32 len, olen; | |
99 | int ret; | |
100 | ||
101 | olen = strlen(str) + 1; | |
9ac3e487 | 102 | len = PERF_ALIGN(olen, NAME_ALIGN); |
fbe96f29 SE |
103 | |
104 | /* write len, incl. \0 */ | |
105 | ret = do_write(fd, &len, sizeof(len)); | |
106 | if (ret < 0) | |
107 | return ret; | |
108 | ||
109 | return write_padded(fd, str, olen, len); | |
110 | } | |
111 | ||
112 | static char *do_read_string(int fd, struct perf_header *ph) | |
113 | { | |
114 | ssize_t sz, ret; | |
115 | u32 len; | |
116 | char *buf; | |
117 | ||
5323f60c | 118 | sz = readn(fd, &len, sizeof(len)); |
fbe96f29 SE |
119 | if (sz < (ssize_t)sizeof(len)) |
120 | return NULL; | |
121 | ||
122 | if (ph->needs_swap) | |
123 | len = bswap_32(len); | |
124 | ||
125 | buf = malloc(len); | |
126 | if (!buf) | |
127 | return NULL; | |
128 | ||
5323f60c | 129 | ret = readn(fd, buf, len); |
fbe96f29 SE |
130 | if (ret == (ssize_t)len) { |
131 | /* | |
132 | * strings are padded by zeroes | |
133 | * thus the actual strlen of buf | |
134 | * may be less than len | |
135 | */ | |
136 | return buf; | |
137 | } | |
138 | ||
139 | free(buf); | |
140 | return NULL; | |
141 | } | |
142 | ||
143 | int | |
144 | perf_header__set_cmdline(int argc, const char **argv) | |
145 | { | |
146 | int i; | |
147 | ||
56e6f602 DA |
148 | /* |
149 | * If header_argv has already been set, do not override it. | |
150 | * This allows a command to set the cmdline, parse args and | |
151 | * then call another builtin function that implements a | |
152 | * command -- e.g, cmd_kvm calling cmd_record. | |
153 | */ | |
154 | if (header_argv) | |
155 | return 0; | |
156 | ||
fbe96f29 SE |
157 | header_argc = (u32)argc; |
158 | ||
159 | /* do not include NULL termination */ | |
160 | header_argv = calloc(argc, sizeof(char *)); | |
161 | if (!header_argv) | |
162 | return -ENOMEM; | |
163 | ||
164 | /* | |
165 | * must copy argv contents because it gets moved | |
166 | * around during option parsing | |
167 | */ | |
168 | for (i = 0; i < argc ; i++) | |
169 | header_argv[i] = argv[i]; | |
170 | ||
171 | return 0; | |
172 | } | |
173 | ||
1b549504 RR |
174 | #define dsos__for_each_with_build_id(pos, head) \ |
175 | list_for_each_entry(pos, head, node) \ | |
176 | if (!pos->has_build_id) \ | |
177 | continue; \ | |
178 | else | |
179 | ||
bf4414ae | 180 | static int write_buildid(const char *name, size_t name_len, u8 *build_id, |
7dbf4dcf JO |
181 | pid_t pid, u16 misc, int fd) |
182 | { | |
183 | int err; | |
184 | struct build_id_event b; | |
185 | size_t len; | |
186 | ||
187 | len = name_len + 1; | |
188 | len = PERF_ALIGN(len, NAME_ALIGN); | |
189 | ||
190 | memset(&b, 0, sizeof(b)); | |
191 | memcpy(&b.build_id, build_id, BUILD_ID_SIZE); | |
192 | b.pid = pid; | |
193 | b.header.misc = misc; | |
194 | b.header.size = sizeof(b) + len; | |
195 | ||
196 | err = do_write(fd, &b, sizeof(b)); | |
197 | if (err < 0) | |
198 | return err; | |
199 | ||
200 | return write_padded(fd, name, name_len + 1, len); | |
201 | } | |
202 | ||
5b6a42fc AH |
203 | static int __dsos__write_buildid_table(struct list_head *head, |
204 | struct machine *machine, | |
205 | pid_t pid, u16 misc, int fd) | |
1b549504 | 206 | { |
5b6a42fc | 207 | char nm[PATH_MAX]; |
1b549504 RR |
208 | struct dso *pos; |
209 | ||
210 | dsos__for_each_with_build_id(pos, head) { | |
211 | int err; | |
bf4414ae | 212 | const char *name; |
7dbf4dcf | 213 | size_t name_len; |
1b549504 RR |
214 | |
215 | if (!pos->hit) | |
216 | continue; | |
7dbf4dcf JO |
217 | |
218 | if (is_vdso_map(pos->short_name)) { | |
219 | name = (char *) VDSO__MAP_NAME; | |
220 | name_len = sizeof(VDSO__MAP_NAME) + 1; | |
5b6a42fc AH |
221 | } else if (dso__is_kcore(pos)) { |
222 | machine__mmap_name(machine, nm, sizeof(nm)); | |
223 | name = nm; | |
224 | name_len = strlen(nm) + 1; | |
7dbf4dcf JO |
225 | } else { |
226 | name = pos->long_name; | |
227 | name_len = pos->long_name_len + 1; | |
228 | } | |
229 | ||
230 | err = write_buildid(name, name_len, pos->build_id, | |
231 | pid, misc, fd); | |
232 | if (err) | |
1b549504 RR |
233 | return err; |
234 | } | |
235 | ||
236 | return 0; | |
237 | } | |
238 | ||
239 | static int machine__write_buildid_table(struct machine *machine, int fd) | |
240 | { | |
241 | int err; | |
242 | u16 kmisc = PERF_RECORD_MISC_KERNEL, | |
243 | umisc = PERF_RECORD_MISC_USER; | |
244 | ||
245 | if (!machine__is_host(machine)) { | |
246 | kmisc = PERF_RECORD_MISC_GUEST_KERNEL; | |
247 | umisc = PERF_RECORD_MISC_GUEST_USER; | |
248 | } | |
249 | ||
5b6a42fc AH |
250 | err = __dsos__write_buildid_table(&machine->kernel_dsos, machine, |
251 | machine->pid, kmisc, fd); | |
1b549504 | 252 | if (err == 0) |
5b6a42fc | 253 | err = __dsos__write_buildid_table(&machine->user_dsos, machine, |
1b549504 RR |
254 | machine->pid, umisc, fd); |
255 | return err; | |
256 | } | |
257 | ||
258 | static int dsos__write_buildid_table(struct perf_header *header, int fd) | |
259 | { | |
260 | struct perf_session *session = container_of(header, | |
261 | struct perf_session, header); | |
262 | struct rb_node *nd; | |
876650e6 | 263 | int err = machine__write_buildid_table(&session->machines.host, fd); |
1b549504 RR |
264 | |
265 | if (err) | |
266 | return err; | |
267 | ||
876650e6 | 268 | for (nd = rb_first(&session->machines.guests); nd; nd = rb_next(nd)) { |
1b549504 RR |
269 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
270 | err = machine__write_buildid_table(pos, fd); | |
271 | if (err) | |
272 | break; | |
273 | } | |
274 | return err; | |
275 | } | |
276 | ||
277 | int build_id_cache__add_s(const char *sbuild_id, const char *debugdir, | |
7dbf4dcf | 278 | const char *name, bool is_kallsyms, bool is_vdso) |
1b549504 RR |
279 | { |
280 | const size_t size = PATH_MAX; | |
281 | char *realname, *filename = zalloc(size), | |
282 | *linkname = zalloc(size), *targetname; | |
283 | int len, err = -1; | |
7dbf4dcf | 284 | bool slash = is_kallsyms || is_vdso; |
1b549504 RR |
285 | |
286 | if (is_kallsyms) { | |
287 | if (symbol_conf.kptr_restrict) { | |
288 | pr_debug("Not caching a kptr_restrict'ed /proc/kallsyms\n"); | |
fdae6373 TJ |
289 | err = 0; |
290 | goto out_free; | |
1b549504 | 291 | } |
7dbf4dcf | 292 | realname = (char *) name; |
1b549504 RR |
293 | } else |
294 | realname = realpath(name, NULL); | |
295 | ||
296 | if (realname == NULL || filename == NULL || linkname == NULL) | |
297 | goto out_free; | |
298 | ||
e7f01d1e | 299 | len = scnprintf(filename, size, "%s%s%s", |
7dbf4dcf JO |
300 | debugdir, slash ? "/" : "", |
301 | is_vdso ? VDSO__MAP_NAME : realname); | |
1b549504 RR |
302 | if (mkdir_p(filename, 0755)) |
303 | goto out_free; | |
304 | ||
afda0f94 | 305 | snprintf(filename + len, size - len, "/%s", sbuild_id); |
1b549504 RR |
306 | |
307 | if (access(filename, F_OK)) { | |
308 | if (is_kallsyms) { | |
309 | if (copyfile("/proc/kallsyms", filename)) | |
310 | goto out_free; | |
311 | } else if (link(realname, filename) && copyfile(name, filename)) | |
312 | goto out_free; | |
313 | } | |
314 | ||
e7f01d1e | 315 | len = scnprintf(linkname, size, "%s/.build-id/%.2s", |
1b549504 RR |
316 | debugdir, sbuild_id); |
317 | ||
318 | if (access(linkname, X_OK) && mkdir_p(linkname, 0755)) | |
319 | goto out_free; | |
320 | ||
321 | snprintf(linkname + len, size - len, "/%s", sbuild_id + 2); | |
322 | targetname = filename + strlen(debugdir) - 5; | |
323 | memcpy(targetname, "../..", 5); | |
324 | ||
325 | if (symlink(targetname, linkname) == 0) | |
326 | err = 0; | |
327 | out_free: | |
328 | if (!is_kallsyms) | |
329 | free(realname); | |
330 | free(filename); | |
331 | free(linkname); | |
332 | return err; | |
333 | } | |
334 | ||
335 | static int build_id_cache__add_b(const u8 *build_id, size_t build_id_size, | |
336 | const char *name, const char *debugdir, | |
7dbf4dcf | 337 | bool is_kallsyms, bool is_vdso) |
1b549504 RR |
338 | { |
339 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; | |
340 | ||
341 | build_id__sprintf(build_id, build_id_size, sbuild_id); | |
342 | ||
7dbf4dcf JO |
343 | return build_id_cache__add_s(sbuild_id, debugdir, name, |
344 | is_kallsyms, is_vdso); | |
1b549504 RR |
345 | } |
346 | ||
347 | int build_id_cache__remove_s(const char *sbuild_id, const char *debugdir) | |
348 | { | |
349 | const size_t size = PATH_MAX; | |
350 | char *filename = zalloc(size), | |
351 | *linkname = zalloc(size); | |
352 | int err = -1; | |
353 | ||
354 | if (filename == NULL || linkname == NULL) | |
355 | goto out_free; | |
356 | ||
357 | snprintf(linkname, size, "%s/.build-id/%.2s/%s", | |
358 | debugdir, sbuild_id, sbuild_id + 2); | |
359 | ||
360 | if (access(linkname, F_OK)) | |
361 | goto out_free; | |
362 | ||
363 | if (readlink(linkname, filename, size - 1) < 0) | |
364 | goto out_free; | |
365 | ||
366 | if (unlink(linkname)) | |
367 | goto out_free; | |
368 | ||
369 | /* | |
370 | * Since the link is relative, we must make it absolute: | |
371 | */ | |
372 | snprintf(linkname, size, "%s/.build-id/%.2s/%s", | |
373 | debugdir, sbuild_id, filename); | |
374 | ||
375 | if (unlink(linkname)) | |
376 | goto out_free; | |
377 | ||
378 | err = 0; | |
379 | out_free: | |
380 | free(filename); | |
381 | free(linkname); | |
382 | return err; | |
383 | } | |
384 | ||
5b6a42fc AH |
385 | static int dso__cache_build_id(struct dso *dso, struct machine *machine, |
386 | const char *debugdir) | |
1b549504 RR |
387 | { |
388 | bool is_kallsyms = dso->kernel && dso->long_name[0] != '/'; | |
7dbf4dcf | 389 | bool is_vdso = is_vdso_map(dso->short_name); |
bf4414ae | 390 | const char *name = dso->long_name; |
5b6a42fc | 391 | char nm[PATH_MAX]; |
1b549504 | 392 | |
5b6a42fc AH |
393 | if (dso__is_kcore(dso)) { |
394 | is_kallsyms = true; | |
395 | machine__mmap_name(machine, nm, sizeof(nm)); | |
396 | name = nm; | |
397 | } | |
398 | return build_id_cache__add_b(dso->build_id, sizeof(dso->build_id), name, | |
399 | debugdir, is_kallsyms, is_vdso); | |
1b549504 RR |
400 | } |
401 | ||
5b6a42fc AH |
402 | static int __dsos__cache_build_ids(struct list_head *head, |
403 | struct machine *machine, const char *debugdir) | |
1b549504 RR |
404 | { |
405 | struct dso *pos; | |
406 | int err = 0; | |
407 | ||
408 | dsos__for_each_with_build_id(pos, head) | |
5b6a42fc | 409 | if (dso__cache_build_id(pos, machine, debugdir)) |
1b549504 RR |
410 | err = -1; |
411 | ||
412 | return err; | |
413 | } | |
414 | ||
415 | static int machine__cache_build_ids(struct machine *machine, const char *debugdir) | |
416 | { | |
5b6a42fc AH |
417 | int ret = __dsos__cache_build_ids(&machine->kernel_dsos, machine, |
418 | debugdir); | |
419 | ret |= __dsos__cache_build_ids(&machine->user_dsos, machine, debugdir); | |
1b549504 RR |
420 | return ret; |
421 | } | |
422 | ||
423 | static int perf_session__cache_build_ids(struct perf_session *session) | |
424 | { | |
425 | struct rb_node *nd; | |
426 | int ret; | |
427 | char debugdir[PATH_MAX]; | |
428 | ||
429 | snprintf(debugdir, sizeof(debugdir), "%s", buildid_dir); | |
430 | ||
431 | if (mkdir(debugdir, 0755) != 0 && errno != EEXIST) | |
432 | return -1; | |
433 | ||
876650e6 | 434 | ret = machine__cache_build_ids(&session->machines.host, debugdir); |
1b549504 | 435 | |
876650e6 | 436 | for (nd = rb_first(&session->machines.guests); nd; nd = rb_next(nd)) { |
1b549504 RR |
437 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
438 | ret |= machine__cache_build_ids(pos, debugdir); | |
439 | } | |
440 | return ret ? -1 : 0; | |
441 | } | |
442 | ||
443 | static bool machine__read_build_ids(struct machine *machine, bool with_hits) | |
444 | { | |
445 | bool ret = __dsos__read_build_ids(&machine->kernel_dsos, with_hits); | |
446 | ret |= __dsos__read_build_ids(&machine->user_dsos, with_hits); | |
447 | return ret; | |
448 | } | |
449 | ||
450 | static bool perf_session__read_build_ids(struct perf_session *session, bool with_hits) | |
451 | { | |
452 | struct rb_node *nd; | |
876650e6 | 453 | bool ret = machine__read_build_ids(&session->machines.host, with_hits); |
1b549504 | 454 | |
876650e6 | 455 | for (nd = rb_first(&session->machines.guests); nd; nd = rb_next(nd)) { |
1b549504 RR |
456 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
457 | ret |= machine__read_build_ids(pos, with_hits); | |
458 | } | |
459 | ||
460 | return ret; | |
461 | } | |
462 | ||
1d037ca1 | 463 | static int write_tracing_data(int fd, struct perf_header *h __maybe_unused, |
fbe96f29 SE |
464 | struct perf_evlist *evlist) |
465 | { | |
466 | return read_tracing_data(fd, &evlist->entries); | |
467 | } | |
468 | ||
469 | ||
470 | static int write_build_id(int fd, struct perf_header *h, | |
1d037ca1 | 471 | struct perf_evlist *evlist __maybe_unused) |
fbe96f29 SE |
472 | { |
473 | struct perf_session *session; | |
474 | int err; | |
475 | ||
476 | session = container_of(h, struct perf_session, header); | |
477 | ||
e20960c0 RR |
478 | if (!perf_session__read_build_ids(session, true)) |
479 | return -1; | |
480 | ||
fbe96f29 SE |
481 | err = dsos__write_buildid_table(h, fd); |
482 | if (err < 0) { | |
483 | pr_debug("failed to write buildid table\n"); | |
484 | return err; | |
485 | } | |
486 | if (!no_buildid_cache) | |
487 | perf_session__cache_build_ids(session); | |
488 | ||
489 | return 0; | |
490 | } | |
491 | ||
1d037ca1 IT |
492 | static int write_hostname(int fd, struct perf_header *h __maybe_unused, |
493 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
494 | { |
495 | struct utsname uts; | |
496 | int ret; | |
497 | ||
498 | ret = uname(&uts); | |
499 | if (ret < 0) | |
500 | return -1; | |
501 | ||
502 | return do_write_string(fd, uts.nodename); | |
503 | } | |
504 | ||
1d037ca1 IT |
505 | static int write_osrelease(int fd, struct perf_header *h __maybe_unused, |
506 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
507 | { |
508 | struct utsname uts; | |
509 | int ret; | |
510 | ||
511 | ret = uname(&uts); | |
512 | if (ret < 0) | |
513 | return -1; | |
514 | ||
515 | return do_write_string(fd, uts.release); | |
516 | } | |
517 | ||
1d037ca1 IT |
518 | static int write_arch(int fd, struct perf_header *h __maybe_unused, |
519 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
520 | { |
521 | struct utsname uts; | |
522 | int ret; | |
523 | ||
524 | ret = uname(&uts); | |
525 | if (ret < 0) | |
526 | return -1; | |
527 | ||
528 | return do_write_string(fd, uts.machine); | |
529 | } | |
530 | ||
1d037ca1 IT |
531 | static int write_version(int fd, struct perf_header *h __maybe_unused, |
532 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
533 | { |
534 | return do_write_string(fd, perf_version_string); | |
535 | } | |
536 | ||
1d037ca1 IT |
537 | static int write_cpudesc(int fd, struct perf_header *h __maybe_unused, |
538 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
539 | { |
540 | #ifndef CPUINFO_PROC | |
541 | #define CPUINFO_PROC NULL | |
542 | #endif | |
543 | FILE *file; | |
544 | char *buf = NULL; | |
545 | char *s, *p; | |
546 | const char *search = CPUINFO_PROC; | |
547 | size_t len = 0; | |
548 | int ret = -1; | |
549 | ||
550 | if (!search) | |
551 | return -1; | |
552 | ||
553 | file = fopen("/proc/cpuinfo", "r"); | |
554 | if (!file) | |
555 | return -1; | |
556 | ||
557 | while (getline(&buf, &len, file) > 0) { | |
558 | ret = strncmp(buf, search, strlen(search)); | |
559 | if (!ret) | |
560 | break; | |
561 | } | |
562 | ||
563 | if (ret) | |
564 | goto done; | |
565 | ||
566 | s = buf; | |
567 | ||
568 | p = strchr(buf, ':'); | |
569 | if (p && *(p+1) == ' ' && *(p+2)) | |
570 | s = p + 2; | |
571 | p = strchr(s, '\n'); | |
572 | if (p) | |
573 | *p = '\0'; | |
574 | ||
575 | /* squash extra space characters (branding string) */ | |
576 | p = s; | |
577 | while (*p) { | |
578 | if (isspace(*p)) { | |
579 | char *r = p + 1; | |
580 | char *q = r; | |
581 | *p = ' '; | |
582 | while (*q && isspace(*q)) | |
583 | q++; | |
584 | if (q != (p+1)) | |
585 | while ((*r++ = *q++)); | |
586 | } | |
587 | p++; | |
588 | } | |
589 | ret = do_write_string(fd, s); | |
590 | done: | |
591 | free(buf); | |
592 | fclose(file); | |
593 | return ret; | |
594 | } | |
595 | ||
1d037ca1 IT |
596 | static int write_nrcpus(int fd, struct perf_header *h __maybe_unused, |
597 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
598 | { |
599 | long nr; | |
600 | u32 nrc, nra; | |
601 | int ret; | |
602 | ||
603 | nr = sysconf(_SC_NPROCESSORS_CONF); | |
604 | if (nr < 0) | |
605 | return -1; | |
606 | ||
607 | nrc = (u32)(nr & UINT_MAX); | |
608 | ||
609 | nr = sysconf(_SC_NPROCESSORS_ONLN); | |
610 | if (nr < 0) | |
611 | return -1; | |
612 | ||
613 | nra = (u32)(nr & UINT_MAX); | |
614 | ||
615 | ret = do_write(fd, &nrc, sizeof(nrc)); | |
616 | if (ret < 0) | |
617 | return ret; | |
618 | ||
619 | return do_write(fd, &nra, sizeof(nra)); | |
620 | } | |
621 | ||
1d037ca1 | 622 | static int write_event_desc(int fd, struct perf_header *h __maybe_unused, |
fbe96f29 SE |
623 | struct perf_evlist *evlist) |
624 | { | |
6606f873 | 625 | struct perf_evsel *evsel; |
74ba9e11 | 626 | u32 nre, nri, sz; |
fbe96f29 SE |
627 | int ret; |
628 | ||
74ba9e11 | 629 | nre = evlist->nr_entries; |
fbe96f29 SE |
630 | |
631 | /* | |
632 | * write number of events | |
633 | */ | |
634 | ret = do_write(fd, &nre, sizeof(nre)); | |
635 | if (ret < 0) | |
636 | return ret; | |
637 | ||
638 | /* | |
639 | * size of perf_event_attr struct | |
640 | */ | |
6606f873 | 641 | sz = (u32)sizeof(evsel->attr); |
fbe96f29 SE |
642 | ret = do_write(fd, &sz, sizeof(sz)); |
643 | if (ret < 0) | |
644 | return ret; | |
645 | ||
0050f7aa | 646 | evlist__for_each(evlist, evsel) { |
6606f873 | 647 | ret = do_write(fd, &evsel->attr, sz); |
fbe96f29 SE |
648 | if (ret < 0) |
649 | return ret; | |
650 | /* | |
651 | * write number of unique id per event | |
652 | * there is one id per instance of an event | |
653 | * | |
654 | * copy into an nri to be independent of the | |
655 | * type of ids, | |
656 | */ | |
6606f873 | 657 | nri = evsel->ids; |
fbe96f29 SE |
658 | ret = do_write(fd, &nri, sizeof(nri)); |
659 | if (ret < 0) | |
660 | return ret; | |
661 | ||
662 | /* | |
663 | * write event string as passed on cmdline | |
664 | */ | |
6606f873 | 665 | ret = do_write_string(fd, perf_evsel__name(evsel)); |
fbe96f29 SE |
666 | if (ret < 0) |
667 | return ret; | |
668 | /* | |
669 | * write unique ids for this event | |
670 | */ | |
6606f873 | 671 | ret = do_write(fd, evsel->id, evsel->ids * sizeof(u64)); |
fbe96f29 SE |
672 | if (ret < 0) |
673 | return ret; | |
674 | } | |
675 | return 0; | |
676 | } | |
677 | ||
1d037ca1 IT |
678 | static int write_cmdline(int fd, struct perf_header *h __maybe_unused, |
679 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
680 | { |
681 | char buf[MAXPATHLEN]; | |
682 | char proc[32]; | |
683 | u32 i, n; | |
684 | int ret; | |
685 | ||
686 | /* | |
687 | * actual atual path to perf binary | |
688 | */ | |
689 | sprintf(proc, "/proc/%d/exe", getpid()); | |
690 | ret = readlink(proc, buf, sizeof(buf)); | |
691 | if (ret <= 0) | |
692 | return -1; | |
693 | ||
694 | /* readlink() does not add null termination */ | |
695 | buf[ret] = '\0'; | |
696 | ||
697 | /* account for binary path */ | |
698 | n = header_argc + 1; | |
699 | ||
700 | ret = do_write(fd, &n, sizeof(n)); | |
701 | if (ret < 0) | |
702 | return ret; | |
703 | ||
704 | ret = do_write_string(fd, buf); | |
705 | if (ret < 0) | |
706 | return ret; | |
707 | ||
708 | for (i = 0 ; i < header_argc; i++) { | |
709 | ret = do_write_string(fd, header_argv[i]); | |
710 | if (ret < 0) | |
711 | return ret; | |
712 | } | |
713 | return 0; | |
714 | } | |
715 | ||
716 | #define CORE_SIB_FMT \ | |
717 | "/sys/devices/system/cpu/cpu%d/topology/core_siblings_list" | |
718 | #define THRD_SIB_FMT \ | |
719 | "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list" | |
720 | ||
721 | struct cpu_topo { | |
722 | u32 core_sib; | |
723 | u32 thread_sib; | |
724 | char **core_siblings; | |
725 | char **thread_siblings; | |
726 | }; | |
727 | ||
728 | static int build_cpu_topo(struct cpu_topo *tp, int cpu) | |
729 | { | |
730 | FILE *fp; | |
731 | char filename[MAXPATHLEN]; | |
732 | char *buf = NULL, *p; | |
733 | size_t len = 0; | |
c5885749 | 734 | ssize_t sret; |
fbe96f29 SE |
735 | u32 i = 0; |
736 | int ret = -1; | |
737 | ||
738 | sprintf(filename, CORE_SIB_FMT, cpu); | |
739 | fp = fopen(filename, "r"); | |
740 | if (!fp) | |
c5885749 | 741 | goto try_threads; |
fbe96f29 | 742 | |
c5885749 | 743 | sret = getline(&buf, &len, fp); |
fbe96f29 | 744 | fclose(fp); |
c5885749 SE |
745 | if (sret <= 0) |
746 | goto try_threads; | |
fbe96f29 SE |
747 | |
748 | p = strchr(buf, '\n'); | |
749 | if (p) | |
750 | *p = '\0'; | |
751 | ||
752 | for (i = 0; i < tp->core_sib; i++) { | |
753 | if (!strcmp(buf, tp->core_siblings[i])) | |
754 | break; | |
755 | } | |
756 | if (i == tp->core_sib) { | |
757 | tp->core_siblings[i] = buf; | |
758 | tp->core_sib++; | |
759 | buf = NULL; | |
760 | len = 0; | |
761 | } | |
c5885749 | 762 | ret = 0; |
fbe96f29 | 763 | |
c5885749 | 764 | try_threads: |
fbe96f29 SE |
765 | sprintf(filename, THRD_SIB_FMT, cpu); |
766 | fp = fopen(filename, "r"); | |
767 | if (!fp) | |
768 | goto done; | |
769 | ||
770 | if (getline(&buf, &len, fp) <= 0) | |
771 | goto done; | |
772 | ||
773 | p = strchr(buf, '\n'); | |
774 | if (p) | |
775 | *p = '\0'; | |
776 | ||
777 | for (i = 0; i < tp->thread_sib; i++) { | |
778 | if (!strcmp(buf, tp->thread_siblings[i])) | |
779 | break; | |
780 | } | |
781 | if (i == tp->thread_sib) { | |
782 | tp->thread_siblings[i] = buf; | |
783 | tp->thread_sib++; | |
784 | buf = NULL; | |
785 | } | |
786 | ret = 0; | |
787 | done: | |
788 | if(fp) | |
789 | fclose(fp); | |
790 | free(buf); | |
791 | return ret; | |
792 | } | |
793 | ||
794 | static void free_cpu_topo(struct cpu_topo *tp) | |
795 | { | |
796 | u32 i; | |
797 | ||
798 | if (!tp) | |
799 | return; | |
800 | ||
801 | for (i = 0 ; i < tp->core_sib; i++) | |
74cf249d | 802 | zfree(&tp->core_siblings[i]); |
fbe96f29 SE |
803 | |
804 | for (i = 0 ; i < tp->thread_sib; i++) | |
74cf249d | 805 | zfree(&tp->thread_siblings[i]); |
fbe96f29 SE |
806 | |
807 | free(tp); | |
808 | } | |
809 | ||
810 | static struct cpu_topo *build_cpu_topology(void) | |
811 | { | |
812 | struct cpu_topo *tp; | |
813 | void *addr; | |
814 | u32 nr, i; | |
815 | size_t sz; | |
816 | long ncpus; | |
817 | int ret = -1; | |
818 | ||
819 | ncpus = sysconf(_SC_NPROCESSORS_CONF); | |
820 | if (ncpus < 0) | |
821 | return NULL; | |
822 | ||
823 | nr = (u32)(ncpus & UINT_MAX); | |
824 | ||
825 | sz = nr * sizeof(char *); | |
826 | ||
827 | addr = calloc(1, sizeof(*tp) + 2 * sz); | |
828 | if (!addr) | |
829 | return NULL; | |
830 | ||
831 | tp = addr; | |
832 | ||
833 | addr += sizeof(*tp); | |
834 | tp->core_siblings = addr; | |
835 | addr += sz; | |
836 | tp->thread_siblings = addr; | |
837 | ||
838 | for (i = 0; i < nr; i++) { | |
839 | ret = build_cpu_topo(tp, i); | |
840 | if (ret < 0) | |
841 | break; | |
842 | } | |
843 | if (ret) { | |
844 | free_cpu_topo(tp); | |
845 | tp = NULL; | |
846 | } | |
847 | return tp; | |
848 | } | |
849 | ||
1d037ca1 IT |
850 | static int write_cpu_topology(int fd, struct perf_header *h __maybe_unused, |
851 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
852 | { |
853 | struct cpu_topo *tp; | |
854 | u32 i; | |
855 | int ret; | |
856 | ||
857 | tp = build_cpu_topology(); | |
858 | if (!tp) | |
859 | return -1; | |
860 | ||
861 | ret = do_write(fd, &tp->core_sib, sizeof(tp->core_sib)); | |
862 | if (ret < 0) | |
863 | goto done; | |
864 | ||
865 | for (i = 0; i < tp->core_sib; i++) { | |
866 | ret = do_write_string(fd, tp->core_siblings[i]); | |
867 | if (ret < 0) | |
868 | goto done; | |
869 | } | |
870 | ret = do_write(fd, &tp->thread_sib, sizeof(tp->thread_sib)); | |
871 | if (ret < 0) | |
872 | goto done; | |
873 | ||
874 | for (i = 0; i < tp->thread_sib; i++) { | |
875 | ret = do_write_string(fd, tp->thread_siblings[i]); | |
876 | if (ret < 0) | |
877 | break; | |
878 | } | |
879 | done: | |
880 | free_cpu_topo(tp); | |
881 | return ret; | |
882 | } | |
883 | ||
884 | ||
885 | ||
1d037ca1 IT |
886 | static int write_total_mem(int fd, struct perf_header *h __maybe_unused, |
887 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
888 | { |
889 | char *buf = NULL; | |
890 | FILE *fp; | |
891 | size_t len = 0; | |
892 | int ret = -1, n; | |
893 | uint64_t mem; | |
894 | ||
895 | fp = fopen("/proc/meminfo", "r"); | |
896 | if (!fp) | |
897 | return -1; | |
898 | ||
899 | while (getline(&buf, &len, fp) > 0) { | |
900 | ret = strncmp(buf, "MemTotal:", 9); | |
901 | if (!ret) | |
902 | break; | |
903 | } | |
904 | if (!ret) { | |
905 | n = sscanf(buf, "%*s %"PRIu64, &mem); | |
906 | if (n == 1) | |
907 | ret = do_write(fd, &mem, sizeof(mem)); | |
908 | } | |
909 | free(buf); | |
910 | fclose(fp); | |
911 | return ret; | |
912 | } | |
913 | ||
914 | static int write_topo_node(int fd, int node) | |
915 | { | |
916 | char str[MAXPATHLEN]; | |
917 | char field[32]; | |
918 | char *buf = NULL, *p; | |
919 | size_t len = 0; | |
920 | FILE *fp; | |
921 | u64 mem_total, mem_free, mem; | |
922 | int ret = -1; | |
923 | ||
924 | sprintf(str, "/sys/devices/system/node/node%d/meminfo", node); | |
925 | fp = fopen(str, "r"); | |
926 | if (!fp) | |
927 | return -1; | |
928 | ||
929 | while (getline(&buf, &len, fp) > 0) { | |
930 | /* skip over invalid lines */ | |
931 | if (!strchr(buf, ':')) | |
932 | continue; | |
933 | if (sscanf(buf, "%*s %*d %s %"PRIu64, field, &mem) != 2) | |
934 | goto done; | |
935 | if (!strcmp(field, "MemTotal:")) | |
936 | mem_total = mem; | |
937 | if (!strcmp(field, "MemFree:")) | |
938 | mem_free = mem; | |
939 | } | |
940 | ||
941 | fclose(fp); | |
5809fde0 | 942 | fp = NULL; |
fbe96f29 SE |
943 | |
944 | ret = do_write(fd, &mem_total, sizeof(u64)); | |
945 | if (ret) | |
946 | goto done; | |
947 | ||
948 | ret = do_write(fd, &mem_free, sizeof(u64)); | |
949 | if (ret) | |
950 | goto done; | |
951 | ||
952 | ret = -1; | |
953 | sprintf(str, "/sys/devices/system/node/node%d/cpulist", node); | |
954 | ||
955 | fp = fopen(str, "r"); | |
956 | if (!fp) | |
957 | goto done; | |
958 | ||
959 | if (getline(&buf, &len, fp) <= 0) | |
960 | goto done; | |
961 | ||
962 | p = strchr(buf, '\n'); | |
963 | if (p) | |
964 | *p = '\0'; | |
965 | ||
966 | ret = do_write_string(fd, buf); | |
967 | done: | |
968 | free(buf); | |
5809fde0 TJ |
969 | if (fp) |
970 | fclose(fp); | |
fbe96f29 SE |
971 | return ret; |
972 | } | |
973 | ||
1d037ca1 IT |
974 | static int write_numa_topology(int fd, struct perf_header *h __maybe_unused, |
975 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
976 | { |
977 | char *buf = NULL; | |
978 | size_t len = 0; | |
979 | FILE *fp; | |
980 | struct cpu_map *node_map = NULL; | |
981 | char *c; | |
982 | u32 nr, i, j; | |
983 | int ret = -1; | |
984 | ||
985 | fp = fopen("/sys/devices/system/node/online", "r"); | |
986 | if (!fp) | |
987 | return -1; | |
988 | ||
989 | if (getline(&buf, &len, fp) <= 0) | |
990 | goto done; | |
991 | ||
992 | c = strchr(buf, '\n'); | |
993 | if (c) | |
994 | *c = '\0'; | |
995 | ||
996 | node_map = cpu_map__new(buf); | |
997 | if (!node_map) | |
998 | goto done; | |
999 | ||
1000 | nr = (u32)node_map->nr; | |
1001 | ||
1002 | ret = do_write(fd, &nr, sizeof(nr)); | |
1003 | if (ret < 0) | |
1004 | goto done; | |
1005 | ||
1006 | for (i = 0; i < nr; i++) { | |
1007 | j = (u32)node_map->map[i]; | |
1008 | ret = do_write(fd, &j, sizeof(j)); | |
1009 | if (ret < 0) | |
1010 | break; | |
1011 | ||
1012 | ret = write_topo_node(fd, i); | |
1013 | if (ret < 0) | |
1014 | break; | |
1015 | } | |
1016 | done: | |
1017 | free(buf); | |
1018 | fclose(fp); | |
1019 | free(node_map); | |
1020 | return ret; | |
1021 | } | |
1022 | ||
50a9667c RR |
1023 | /* |
1024 | * File format: | |
1025 | * | |
1026 | * struct pmu_mappings { | |
1027 | * u32 pmu_num; | |
1028 | * struct pmu_map { | |
1029 | * u32 type; | |
1030 | * char name[]; | |
1031 | * }[pmu_num]; | |
1032 | * }; | |
1033 | */ | |
1034 | ||
1d037ca1 IT |
1035 | static int write_pmu_mappings(int fd, struct perf_header *h __maybe_unused, |
1036 | struct perf_evlist *evlist __maybe_unused) | |
50a9667c RR |
1037 | { |
1038 | struct perf_pmu *pmu = NULL; | |
1039 | off_t offset = lseek(fd, 0, SEEK_CUR); | |
1040 | __u32 pmu_num = 0; | |
5323f60c | 1041 | int ret; |
50a9667c RR |
1042 | |
1043 | /* write real pmu_num later */ | |
5323f60c NK |
1044 | ret = do_write(fd, &pmu_num, sizeof(pmu_num)); |
1045 | if (ret < 0) | |
1046 | return ret; | |
50a9667c RR |
1047 | |
1048 | while ((pmu = perf_pmu__scan(pmu))) { | |
1049 | if (!pmu->name) | |
1050 | continue; | |
1051 | pmu_num++; | |
5323f60c NK |
1052 | |
1053 | ret = do_write(fd, &pmu->type, sizeof(pmu->type)); | |
1054 | if (ret < 0) | |
1055 | return ret; | |
1056 | ||
1057 | ret = do_write_string(fd, pmu->name); | |
1058 | if (ret < 0) | |
1059 | return ret; | |
50a9667c RR |
1060 | } |
1061 | ||
1062 | if (pwrite(fd, &pmu_num, sizeof(pmu_num), offset) != sizeof(pmu_num)) { | |
1063 | /* discard all */ | |
1064 | lseek(fd, offset, SEEK_SET); | |
1065 | return -1; | |
1066 | } | |
1067 | ||
1068 | return 0; | |
1069 | } | |
1070 | ||
a8bb559b NK |
1071 | /* |
1072 | * File format: | |
1073 | * | |
1074 | * struct group_descs { | |
1075 | * u32 nr_groups; | |
1076 | * struct group_desc { | |
1077 | * char name[]; | |
1078 | * u32 leader_idx; | |
1079 | * u32 nr_members; | |
1080 | * }[nr_groups]; | |
1081 | * }; | |
1082 | */ | |
1083 | static int write_group_desc(int fd, struct perf_header *h __maybe_unused, | |
1084 | struct perf_evlist *evlist) | |
1085 | { | |
1086 | u32 nr_groups = evlist->nr_groups; | |
1087 | struct perf_evsel *evsel; | |
1088 | int ret; | |
1089 | ||
1090 | ret = do_write(fd, &nr_groups, sizeof(nr_groups)); | |
1091 | if (ret < 0) | |
1092 | return ret; | |
1093 | ||
0050f7aa | 1094 | evlist__for_each(evlist, evsel) { |
a8bb559b NK |
1095 | if (perf_evsel__is_group_leader(evsel) && |
1096 | evsel->nr_members > 1) { | |
1097 | const char *name = evsel->group_name ?: "{anon_group}"; | |
1098 | u32 leader_idx = evsel->idx; | |
1099 | u32 nr_members = evsel->nr_members; | |
1100 | ||
1101 | ret = do_write_string(fd, name); | |
1102 | if (ret < 0) | |
1103 | return ret; | |
1104 | ||
1105 | ret = do_write(fd, &leader_idx, sizeof(leader_idx)); | |
1106 | if (ret < 0) | |
1107 | return ret; | |
1108 | ||
1109 | ret = do_write(fd, &nr_members, sizeof(nr_members)); | |
1110 | if (ret < 0) | |
1111 | return ret; | |
1112 | } | |
1113 | } | |
1114 | return 0; | |
1115 | } | |
1116 | ||
fbe96f29 SE |
1117 | /* |
1118 | * default get_cpuid(): nothing gets recorded | |
1119 | * actual implementation must be in arch/$(ARCH)/util/header.c | |
1120 | */ | |
1d037ca1 IT |
1121 | int __attribute__ ((weak)) get_cpuid(char *buffer __maybe_unused, |
1122 | size_t sz __maybe_unused) | |
fbe96f29 SE |
1123 | { |
1124 | return -1; | |
1125 | } | |
1126 | ||
1d037ca1 IT |
1127 | static int write_cpuid(int fd, struct perf_header *h __maybe_unused, |
1128 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
1129 | { |
1130 | char buffer[64]; | |
1131 | int ret; | |
1132 | ||
1133 | ret = get_cpuid(buffer, sizeof(buffer)); | |
1134 | if (!ret) | |
1135 | goto write_it; | |
1136 | ||
1137 | return -1; | |
1138 | write_it: | |
1139 | return do_write_string(fd, buffer); | |
1140 | } | |
1141 | ||
1d037ca1 IT |
1142 | static int write_branch_stack(int fd __maybe_unused, |
1143 | struct perf_header *h __maybe_unused, | |
1144 | struct perf_evlist *evlist __maybe_unused) | |
330aa675 SE |
1145 | { |
1146 | return 0; | |
1147 | } | |
1148 | ||
7e94cfcc NK |
1149 | static void print_hostname(struct perf_header *ph, int fd __maybe_unused, |
1150 | FILE *fp) | |
fbe96f29 | 1151 | { |
7e94cfcc | 1152 | fprintf(fp, "# hostname : %s\n", ph->env.hostname); |
fbe96f29 SE |
1153 | } |
1154 | ||
7e94cfcc NK |
1155 | static void print_osrelease(struct perf_header *ph, int fd __maybe_unused, |
1156 | FILE *fp) | |
fbe96f29 | 1157 | { |
7e94cfcc | 1158 | fprintf(fp, "# os release : %s\n", ph->env.os_release); |
fbe96f29 SE |
1159 | } |
1160 | ||
7e94cfcc | 1161 | static void print_arch(struct perf_header *ph, int fd __maybe_unused, FILE *fp) |
fbe96f29 | 1162 | { |
7e94cfcc | 1163 | fprintf(fp, "# arch : %s\n", ph->env.arch); |
fbe96f29 SE |
1164 | } |
1165 | ||
7e94cfcc NK |
1166 | static void print_cpudesc(struct perf_header *ph, int fd __maybe_unused, |
1167 | FILE *fp) | |
fbe96f29 | 1168 | { |
7e94cfcc | 1169 | fprintf(fp, "# cpudesc : %s\n", ph->env.cpu_desc); |
fbe96f29 SE |
1170 | } |
1171 | ||
7e94cfcc NK |
1172 | static void print_nrcpus(struct perf_header *ph, int fd __maybe_unused, |
1173 | FILE *fp) | |
fbe96f29 | 1174 | { |
7e94cfcc NK |
1175 | fprintf(fp, "# nrcpus online : %u\n", ph->env.nr_cpus_online); |
1176 | fprintf(fp, "# nrcpus avail : %u\n", ph->env.nr_cpus_avail); | |
fbe96f29 SE |
1177 | } |
1178 | ||
7e94cfcc NK |
1179 | static void print_version(struct perf_header *ph, int fd __maybe_unused, |
1180 | FILE *fp) | |
fbe96f29 | 1181 | { |
7e94cfcc | 1182 | fprintf(fp, "# perf version : %s\n", ph->env.version); |
fbe96f29 SE |
1183 | } |
1184 | ||
7e94cfcc NK |
1185 | static void print_cmdline(struct perf_header *ph, int fd __maybe_unused, |
1186 | FILE *fp) | |
fbe96f29 | 1187 | { |
7e94cfcc | 1188 | int nr, i; |
fbe96f29 | 1189 | char *str; |
fbe96f29 | 1190 | |
7e94cfcc NK |
1191 | nr = ph->env.nr_cmdline; |
1192 | str = ph->env.cmdline; | |
fbe96f29 SE |
1193 | |
1194 | fprintf(fp, "# cmdline : "); | |
1195 | ||
1196 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 1197 | fprintf(fp, "%s ", str); |
7e94cfcc | 1198 | str += strlen(str) + 1; |
fbe96f29 SE |
1199 | } |
1200 | fputc('\n', fp); | |
1201 | } | |
1202 | ||
7e94cfcc NK |
1203 | static void print_cpu_topology(struct perf_header *ph, int fd __maybe_unused, |
1204 | FILE *fp) | |
fbe96f29 | 1205 | { |
7e94cfcc | 1206 | int nr, i; |
fbe96f29 SE |
1207 | char *str; |
1208 | ||
7e94cfcc NK |
1209 | nr = ph->env.nr_sibling_cores; |
1210 | str = ph->env.sibling_cores; | |
fbe96f29 SE |
1211 | |
1212 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 1213 | fprintf(fp, "# sibling cores : %s\n", str); |
7e94cfcc | 1214 | str += strlen(str) + 1; |
fbe96f29 SE |
1215 | } |
1216 | ||
7e94cfcc NK |
1217 | nr = ph->env.nr_sibling_threads; |
1218 | str = ph->env.sibling_threads; | |
fbe96f29 SE |
1219 | |
1220 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 1221 | fprintf(fp, "# sibling threads : %s\n", str); |
7e94cfcc | 1222 | str += strlen(str) + 1; |
fbe96f29 SE |
1223 | } |
1224 | } | |
1225 | ||
4e1b9c67 | 1226 | static void free_event_desc(struct perf_evsel *events) |
fbe96f29 | 1227 | { |
4e1b9c67 RR |
1228 | struct perf_evsel *evsel; |
1229 | ||
1230 | if (!events) | |
1231 | return; | |
1232 | ||
1233 | for (evsel = events; evsel->attr.size; evsel++) { | |
74cf249d ACM |
1234 | zfree(&evsel->name); |
1235 | zfree(&evsel->id); | |
4e1b9c67 RR |
1236 | } |
1237 | ||
1238 | free(events); | |
1239 | } | |
1240 | ||
1241 | static struct perf_evsel * | |
1242 | read_event_desc(struct perf_header *ph, int fd) | |
1243 | { | |
1244 | struct perf_evsel *evsel, *events = NULL; | |
1245 | u64 *id; | |
fbe96f29 | 1246 | void *buf = NULL; |
62db9068 SE |
1247 | u32 nre, sz, nr, i, j; |
1248 | ssize_t ret; | |
1249 | size_t msz; | |
fbe96f29 SE |
1250 | |
1251 | /* number of events */ | |
5323f60c | 1252 | ret = readn(fd, &nre, sizeof(nre)); |
fbe96f29 SE |
1253 | if (ret != (ssize_t)sizeof(nre)) |
1254 | goto error; | |
1255 | ||
1256 | if (ph->needs_swap) | |
1257 | nre = bswap_32(nre); | |
1258 | ||
5323f60c | 1259 | ret = readn(fd, &sz, sizeof(sz)); |
fbe96f29 SE |
1260 | if (ret != (ssize_t)sizeof(sz)) |
1261 | goto error; | |
1262 | ||
1263 | if (ph->needs_swap) | |
1264 | sz = bswap_32(sz); | |
1265 | ||
62db9068 | 1266 | /* buffer to hold on file attr struct */ |
fbe96f29 SE |
1267 | buf = malloc(sz); |
1268 | if (!buf) | |
1269 | goto error; | |
1270 | ||
4e1b9c67 RR |
1271 | /* the last event terminates with evsel->attr.size == 0: */ |
1272 | events = calloc(nre + 1, sizeof(*events)); | |
1273 | if (!events) | |
1274 | goto error; | |
1275 | ||
1276 | msz = sizeof(evsel->attr); | |
9fafd98f | 1277 | if (sz < msz) |
fbe96f29 SE |
1278 | msz = sz; |
1279 | ||
4e1b9c67 RR |
1280 | for (i = 0, evsel = events; i < nre; evsel++, i++) { |
1281 | evsel->idx = i; | |
fbe96f29 | 1282 | |
62db9068 SE |
1283 | /* |
1284 | * must read entire on-file attr struct to | |
1285 | * sync up with layout. | |
1286 | */ | |
5323f60c | 1287 | ret = readn(fd, buf, sz); |
fbe96f29 SE |
1288 | if (ret != (ssize_t)sz) |
1289 | goto error; | |
1290 | ||
1291 | if (ph->needs_swap) | |
1292 | perf_event__attr_swap(buf); | |
1293 | ||
4e1b9c67 | 1294 | memcpy(&evsel->attr, buf, msz); |
fbe96f29 | 1295 | |
5323f60c | 1296 | ret = readn(fd, &nr, sizeof(nr)); |
fbe96f29 SE |
1297 | if (ret != (ssize_t)sizeof(nr)) |
1298 | goto error; | |
1299 | ||
0807d2d8 | 1300 | if (ph->needs_swap) { |
fbe96f29 | 1301 | nr = bswap_32(nr); |
0807d2d8 ACM |
1302 | evsel->needs_swap = true; |
1303 | } | |
fbe96f29 | 1304 | |
4e1b9c67 RR |
1305 | evsel->name = do_read_string(fd, ph); |
1306 | ||
1307 | if (!nr) | |
1308 | continue; | |
1309 | ||
1310 | id = calloc(nr, sizeof(*id)); | |
1311 | if (!id) | |
1312 | goto error; | |
1313 | evsel->ids = nr; | |
1314 | evsel->id = id; | |
1315 | ||
1316 | for (j = 0 ; j < nr; j++) { | |
5323f60c | 1317 | ret = readn(fd, id, sizeof(*id)); |
4e1b9c67 RR |
1318 | if (ret != (ssize_t)sizeof(*id)) |
1319 | goto error; | |
1320 | if (ph->needs_swap) | |
1321 | *id = bswap_64(*id); | |
1322 | id++; | |
1323 | } | |
1324 | } | |
1325 | out: | |
04662523 | 1326 | free(buf); |
4e1b9c67 RR |
1327 | return events; |
1328 | error: | |
1329 | if (events) | |
1330 | free_event_desc(events); | |
1331 | events = NULL; | |
1332 | goto out; | |
1333 | } | |
1334 | ||
1335 | static void print_event_desc(struct perf_header *ph, int fd, FILE *fp) | |
1336 | { | |
1337 | struct perf_evsel *evsel, *events = read_event_desc(ph, fd); | |
1338 | u32 j; | |
1339 | u64 *id; | |
1340 | ||
1341 | if (!events) { | |
1342 | fprintf(fp, "# event desc: not available or unable to read\n"); | |
1343 | return; | |
1344 | } | |
1345 | ||
1346 | for (evsel = events; evsel->attr.size; evsel++) { | |
1347 | fprintf(fp, "# event : name = %s, ", evsel->name); | |
fbe96f29 SE |
1348 | |
1349 | fprintf(fp, "type = %d, config = 0x%"PRIx64 | |
1350 | ", config1 = 0x%"PRIx64", config2 = 0x%"PRIx64, | |
4e1b9c67 RR |
1351 | evsel->attr.type, |
1352 | (u64)evsel->attr.config, | |
1353 | (u64)evsel->attr.config1, | |
1354 | (u64)evsel->attr.config2); | |
fbe96f29 SE |
1355 | |
1356 | fprintf(fp, ", excl_usr = %d, excl_kern = %d", | |
4e1b9c67 RR |
1357 | evsel->attr.exclude_user, |
1358 | evsel->attr.exclude_kernel); | |
fbe96f29 | 1359 | |
78b961ff | 1360 | fprintf(fp, ", excl_host = %d, excl_guest = %d", |
4e1b9c67 RR |
1361 | evsel->attr.exclude_host, |
1362 | evsel->attr.exclude_guest); | |
78b961ff | 1363 | |
4e1b9c67 | 1364 | fprintf(fp, ", precise_ip = %d", evsel->attr.precise_ip); |
78b961ff | 1365 | |
5c5e854b SE |
1366 | fprintf(fp, ", attr_mmap2 = %d", evsel->attr.mmap2); |
1367 | fprintf(fp, ", attr_mmap = %d", evsel->attr.mmap); | |
1368 | fprintf(fp, ", attr_mmap_data = %d", evsel->attr.mmap_data); | |
4e1b9c67 | 1369 | if (evsel->ids) { |
fbe96f29 | 1370 | fprintf(fp, ", id = {"); |
4e1b9c67 RR |
1371 | for (j = 0, id = evsel->id; j < evsel->ids; j++, id++) { |
1372 | if (j) | |
1373 | fputc(',', fp); | |
1374 | fprintf(fp, " %"PRIu64, *id); | |
1375 | } | |
fbe96f29 | 1376 | fprintf(fp, " }"); |
4e1b9c67 RR |
1377 | } |
1378 | ||
fbe96f29 SE |
1379 | fputc('\n', fp); |
1380 | } | |
4e1b9c67 RR |
1381 | |
1382 | free_event_desc(events); | |
fbe96f29 SE |
1383 | } |
1384 | ||
7e94cfcc | 1385 | static void print_total_mem(struct perf_header *ph, int fd __maybe_unused, |
1d037ca1 | 1386 | FILE *fp) |
fbe96f29 | 1387 | { |
7e94cfcc | 1388 | fprintf(fp, "# total memory : %Lu kB\n", ph->env.total_mem); |
fbe96f29 SE |
1389 | } |
1390 | ||
7e94cfcc | 1391 | static void print_numa_topology(struct perf_header *ph, int fd __maybe_unused, |
1d037ca1 | 1392 | FILE *fp) |
fbe96f29 | 1393 | { |
fbe96f29 | 1394 | u32 nr, c, i; |
7e94cfcc | 1395 | char *str, *tmp; |
fbe96f29 SE |
1396 | uint64_t mem_total, mem_free; |
1397 | ||
1398 | /* nr nodes */ | |
7e94cfcc NK |
1399 | nr = ph->env.nr_numa_nodes; |
1400 | str = ph->env.numa_nodes; | |
fbe96f29 SE |
1401 | |
1402 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 1403 | /* node number */ |
7e94cfcc NK |
1404 | c = strtoul(str, &tmp, 0); |
1405 | if (*tmp != ':') | |
fbe96f29 SE |
1406 | goto error; |
1407 | ||
7e94cfcc NK |
1408 | str = tmp + 1; |
1409 | mem_total = strtoull(str, &tmp, 0); | |
1410 | if (*tmp != ':') | |
fbe96f29 SE |
1411 | goto error; |
1412 | ||
7e94cfcc NK |
1413 | str = tmp + 1; |
1414 | mem_free = strtoull(str, &tmp, 0); | |
1415 | if (*tmp != ':') | |
fbe96f29 SE |
1416 | goto error; |
1417 | ||
fbe96f29 SE |
1418 | fprintf(fp, "# node%u meminfo : total = %"PRIu64" kB," |
1419 | " free = %"PRIu64" kB\n", | |
7e94cfcc | 1420 | c, mem_total, mem_free); |
fbe96f29 | 1421 | |
7e94cfcc | 1422 | str = tmp + 1; |
fbe96f29 | 1423 | fprintf(fp, "# node%u cpu list : %s\n", c, str); |
1234471e NK |
1424 | |
1425 | str += strlen(str) + 1; | |
fbe96f29 SE |
1426 | } |
1427 | return; | |
1428 | error: | |
1429 | fprintf(fp, "# numa topology : not available\n"); | |
1430 | } | |
1431 | ||
7e94cfcc | 1432 | static void print_cpuid(struct perf_header *ph, int fd __maybe_unused, FILE *fp) |
fbe96f29 | 1433 | { |
7e94cfcc | 1434 | fprintf(fp, "# cpuid : %s\n", ph->env.cpuid); |
fbe96f29 SE |
1435 | } |
1436 | ||
1d037ca1 | 1437 | static void print_branch_stack(struct perf_header *ph __maybe_unused, |
7e94cfcc | 1438 | int fd __maybe_unused, FILE *fp) |
330aa675 SE |
1439 | { |
1440 | fprintf(fp, "# contains samples with branch stack\n"); | |
1441 | } | |
1442 | ||
7e94cfcc NK |
1443 | static void print_pmu_mappings(struct perf_header *ph, int fd __maybe_unused, |
1444 | FILE *fp) | |
50a9667c RR |
1445 | { |
1446 | const char *delimiter = "# pmu mappings: "; | |
7e94cfcc | 1447 | char *str, *tmp; |
50a9667c RR |
1448 | u32 pmu_num; |
1449 | u32 type; | |
1450 | ||
7e94cfcc | 1451 | pmu_num = ph->env.nr_pmu_mappings; |
50a9667c RR |
1452 | if (!pmu_num) { |
1453 | fprintf(fp, "# pmu mappings: not available\n"); | |
1454 | return; | |
1455 | } | |
1456 | ||
7e94cfcc NK |
1457 | str = ph->env.pmu_mappings; |
1458 | ||
50a9667c | 1459 | while (pmu_num) { |
7e94cfcc NK |
1460 | type = strtoul(str, &tmp, 0); |
1461 | if (*tmp != ':') | |
1462 | goto error; | |
1463 | ||
1464 | str = tmp + 1; | |
1465 | fprintf(fp, "%s%s = %" PRIu32, delimiter, str, type); | |
be4a2ded | 1466 | |
50a9667c | 1467 | delimiter = ", "; |
7e94cfcc NK |
1468 | str += strlen(str) + 1; |
1469 | pmu_num--; | |
50a9667c RR |
1470 | } |
1471 | ||
1472 | fprintf(fp, "\n"); | |
1473 | ||
1474 | if (!pmu_num) | |
1475 | return; | |
1476 | error: | |
1477 | fprintf(fp, "# pmu mappings: unable to read\n"); | |
1478 | } | |
1479 | ||
a8bb559b NK |
1480 | static void print_group_desc(struct perf_header *ph, int fd __maybe_unused, |
1481 | FILE *fp) | |
1482 | { | |
1483 | struct perf_session *session; | |
1484 | struct perf_evsel *evsel; | |
1485 | u32 nr = 0; | |
1486 | ||
1487 | session = container_of(ph, struct perf_session, header); | |
1488 | ||
0050f7aa | 1489 | evlist__for_each(session->evlist, evsel) { |
a8bb559b NK |
1490 | if (perf_evsel__is_group_leader(evsel) && |
1491 | evsel->nr_members > 1) { | |
1492 | fprintf(fp, "# group: %s{%s", evsel->group_name ?: "", | |
1493 | perf_evsel__name(evsel)); | |
1494 | ||
1495 | nr = evsel->nr_members - 1; | |
1496 | } else if (nr) { | |
1497 | fprintf(fp, ",%s", perf_evsel__name(evsel)); | |
1498 | ||
1499 | if (--nr == 0) | |
1500 | fprintf(fp, "}\n"); | |
1501 | } | |
1502 | } | |
1503 | } | |
1504 | ||
08d95bd2 RR |
1505 | static int __event_process_build_id(struct build_id_event *bev, |
1506 | char *filename, | |
1507 | struct perf_session *session) | |
1508 | { | |
1509 | int err = -1; | |
1510 | struct list_head *head; | |
1511 | struct machine *machine; | |
1512 | u16 misc; | |
1513 | struct dso *dso; | |
1514 | enum dso_kernel_type dso_type; | |
1515 | ||
1516 | machine = perf_session__findnew_machine(session, bev->pid); | |
1517 | if (!machine) | |
1518 | goto out; | |
1519 | ||
1520 | misc = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
1521 | ||
1522 | switch (misc) { | |
1523 | case PERF_RECORD_MISC_KERNEL: | |
1524 | dso_type = DSO_TYPE_KERNEL; | |
1525 | head = &machine->kernel_dsos; | |
1526 | break; | |
1527 | case PERF_RECORD_MISC_GUEST_KERNEL: | |
1528 | dso_type = DSO_TYPE_GUEST_KERNEL; | |
1529 | head = &machine->kernel_dsos; | |
1530 | break; | |
1531 | case PERF_RECORD_MISC_USER: | |
1532 | case PERF_RECORD_MISC_GUEST_USER: | |
1533 | dso_type = DSO_TYPE_USER; | |
1534 | head = &machine->user_dsos; | |
1535 | break; | |
1536 | default: | |
1537 | goto out; | |
1538 | } | |
1539 | ||
1540 | dso = __dsos__findnew(head, filename); | |
1541 | if (dso != NULL) { | |
1542 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; | |
1543 | ||
1544 | dso__set_build_id(dso, &bev->build_id); | |
1545 | ||
1546 | if (filename[0] == '[') | |
1547 | dso->kernel = dso_type; | |
1548 | ||
1549 | build_id__sprintf(dso->build_id, sizeof(dso->build_id), | |
1550 | sbuild_id); | |
1551 | pr_debug("build id event received for %s: %s\n", | |
1552 | dso->long_name, sbuild_id); | |
1553 | } | |
1554 | ||
1555 | err = 0; | |
1556 | out: | |
1557 | return err; | |
1558 | } | |
1559 | ||
1560 | static int perf_header__read_build_ids_abi_quirk(struct perf_header *header, | |
1561 | int input, u64 offset, u64 size) | |
1562 | { | |
1563 | struct perf_session *session = container_of(header, struct perf_session, header); | |
1564 | struct { | |
1565 | struct perf_event_header header; | |
9ac3e487 | 1566 | u8 build_id[PERF_ALIGN(BUILD_ID_SIZE, sizeof(u64))]; |
08d95bd2 RR |
1567 | char filename[0]; |
1568 | } old_bev; | |
1569 | struct build_id_event bev; | |
1570 | char filename[PATH_MAX]; | |
1571 | u64 limit = offset + size; | |
1572 | ||
1573 | while (offset < limit) { | |
1574 | ssize_t len; | |
1575 | ||
5323f60c | 1576 | if (readn(input, &old_bev, sizeof(old_bev)) != sizeof(old_bev)) |
08d95bd2 RR |
1577 | return -1; |
1578 | ||
1579 | if (header->needs_swap) | |
1580 | perf_event_header__bswap(&old_bev.header); | |
1581 | ||
1582 | len = old_bev.header.size - sizeof(old_bev); | |
5323f60c | 1583 | if (readn(input, filename, len) != len) |
08d95bd2 RR |
1584 | return -1; |
1585 | ||
1586 | bev.header = old_bev.header; | |
1587 | ||
1588 | /* | |
1589 | * As the pid is the missing value, we need to fill | |
1590 | * it properly. The header.misc value give us nice hint. | |
1591 | */ | |
1592 | bev.pid = HOST_KERNEL_ID; | |
1593 | if (bev.header.misc == PERF_RECORD_MISC_GUEST_USER || | |
1594 | bev.header.misc == PERF_RECORD_MISC_GUEST_KERNEL) | |
1595 | bev.pid = DEFAULT_GUEST_KERNEL_ID; | |
1596 | ||
1597 | memcpy(bev.build_id, old_bev.build_id, sizeof(bev.build_id)); | |
1598 | __event_process_build_id(&bev, filename, session); | |
1599 | ||
1600 | offset += bev.header.size; | |
1601 | } | |
1602 | ||
1603 | return 0; | |
1604 | } | |
1605 | ||
1606 | static int perf_header__read_build_ids(struct perf_header *header, | |
1607 | int input, u64 offset, u64 size) | |
1608 | { | |
1609 | struct perf_session *session = container_of(header, struct perf_session, header); | |
1610 | struct build_id_event bev; | |
1611 | char filename[PATH_MAX]; | |
1612 | u64 limit = offset + size, orig_offset = offset; | |
1613 | int err = -1; | |
1614 | ||
1615 | while (offset < limit) { | |
1616 | ssize_t len; | |
1617 | ||
5323f60c | 1618 | if (readn(input, &bev, sizeof(bev)) != sizeof(bev)) |
08d95bd2 RR |
1619 | goto out; |
1620 | ||
1621 | if (header->needs_swap) | |
1622 | perf_event_header__bswap(&bev.header); | |
1623 | ||
1624 | len = bev.header.size - sizeof(bev); | |
5323f60c | 1625 | if (readn(input, filename, len) != len) |
08d95bd2 RR |
1626 | goto out; |
1627 | /* | |
1628 | * The a1645ce1 changeset: | |
1629 | * | |
1630 | * "perf: 'perf kvm' tool for monitoring guest performance from host" | |
1631 | * | |
1632 | * Added a field to struct build_id_event that broke the file | |
1633 | * format. | |
1634 | * | |
1635 | * Since the kernel build-id is the first entry, process the | |
1636 | * table using the old format if the well known | |
1637 | * '[kernel.kallsyms]' string for the kernel build-id has the | |
1638 | * first 4 characters chopped off (where the pid_t sits). | |
1639 | */ | |
1640 | if (memcmp(filename, "nel.kallsyms]", 13) == 0) { | |
1641 | if (lseek(input, orig_offset, SEEK_SET) == (off_t)-1) | |
1642 | return -1; | |
1643 | return perf_header__read_build_ids_abi_quirk(header, input, offset, size); | |
1644 | } | |
1645 | ||
1646 | __event_process_build_id(&bev, filename, session); | |
1647 | ||
1648 | offset += bev.header.size; | |
1649 | } | |
1650 | err = 0; | |
1651 | out: | |
1652 | return err; | |
1653 | } | |
1654 | ||
3d7eb86b NK |
1655 | static int process_tracing_data(struct perf_file_section *section __maybe_unused, |
1656 | struct perf_header *ph __maybe_unused, | |
1657 | int fd, void *data) | |
f1c67db7 | 1658 | { |
3dce2ce3 NK |
1659 | ssize_t ret = trace_report(fd, data, false); |
1660 | return ret < 0 ? -1 : 0; | |
f1c67db7 RR |
1661 | } |
1662 | ||
1663 | static int process_build_id(struct perf_file_section *section, | |
3d7eb86b | 1664 | struct perf_header *ph, int fd, |
1d037ca1 | 1665 | void *data __maybe_unused) |
f1c67db7 RR |
1666 | { |
1667 | if (perf_header__read_build_ids(ph, fd, section->offset, section->size)) | |
1668 | pr_debug("Failed to read buildids, continuing...\n"); | |
1669 | return 0; | |
1670 | } | |
1671 | ||
a1ae5655 | 1672 | static int process_hostname(struct perf_file_section *section __maybe_unused, |
3d7eb86b NK |
1673 | struct perf_header *ph, int fd, |
1674 | void *data __maybe_unused) | |
a1ae5655 NK |
1675 | { |
1676 | ph->env.hostname = do_read_string(fd, ph); | |
1677 | return ph->env.hostname ? 0 : -ENOMEM; | |
1678 | } | |
1679 | ||
1680 | static int process_osrelease(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1681 | struct perf_header *ph, int fd, |
1682 | void *data __maybe_unused) | |
a1ae5655 NK |
1683 | { |
1684 | ph->env.os_release = do_read_string(fd, ph); | |
1685 | return ph->env.os_release ? 0 : -ENOMEM; | |
1686 | } | |
1687 | ||
1688 | static int process_version(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1689 | struct perf_header *ph, int fd, |
1690 | void *data __maybe_unused) | |
a1ae5655 NK |
1691 | { |
1692 | ph->env.version = do_read_string(fd, ph); | |
1693 | return ph->env.version ? 0 : -ENOMEM; | |
1694 | } | |
1695 | ||
1696 | static int process_arch(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1697 | struct perf_header *ph, int fd, |
1698 | void *data __maybe_unused) | |
a1ae5655 NK |
1699 | { |
1700 | ph->env.arch = do_read_string(fd, ph); | |
1701 | return ph->env.arch ? 0 : -ENOMEM; | |
1702 | } | |
1703 | ||
1704 | static int process_nrcpus(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1705 | struct perf_header *ph, int fd, |
1706 | void *data __maybe_unused) | |
a1ae5655 | 1707 | { |
727ebd54 | 1708 | ssize_t ret; |
a1ae5655 NK |
1709 | u32 nr; |
1710 | ||
5323f60c | 1711 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1712 | if (ret != sizeof(nr)) |
1713 | return -1; | |
1714 | ||
1715 | if (ph->needs_swap) | |
1716 | nr = bswap_32(nr); | |
1717 | ||
1718 | ph->env.nr_cpus_online = nr; | |
1719 | ||
5323f60c | 1720 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1721 | if (ret != sizeof(nr)) |
1722 | return -1; | |
1723 | ||
1724 | if (ph->needs_swap) | |
1725 | nr = bswap_32(nr); | |
1726 | ||
1727 | ph->env.nr_cpus_avail = nr; | |
1728 | return 0; | |
1729 | } | |
1730 | ||
1731 | static int process_cpudesc(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1732 | struct perf_header *ph, int fd, |
1733 | void *data __maybe_unused) | |
a1ae5655 NK |
1734 | { |
1735 | ph->env.cpu_desc = do_read_string(fd, ph); | |
1736 | return ph->env.cpu_desc ? 0 : -ENOMEM; | |
1737 | } | |
1738 | ||
1739 | static int process_cpuid(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1740 | struct perf_header *ph, int fd, |
1741 | void *data __maybe_unused) | |
a1ae5655 NK |
1742 | { |
1743 | ph->env.cpuid = do_read_string(fd, ph); | |
1744 | return ph->env.cpuid ? 0 : -ENOMEM; | |
1745 | } | |
1746 | ||
1747 | static int process_total_mem(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1748 | struct perf_header *ph, int fd, |
1749 | void *data __maybe_unused) | |
a1ae5655 NK |
1750 | { |
1751 | uint64_t mem; | |
727ebd54 | 1752 | ssize_t ret; |
a1ae5655 | 1753 | |
5323f60c | 1754 | ret = readn(fd, &mem, sizeof(mem)); |
a1ae5655 NK |
1755 | if (ret != sizeof(mem)) |
1756 | return -1; | |
1757 | ||
1758 | if (ph->needs_swap) | |
1759 | mem = bswap_64(mem); | |
1760 | ||
1761 | ph->env.total_mem = mem; | |
1762 | return 0; | |
1763 | } | |
1764 | ||
7c2f7afd RR |
1765 | static struct perf_evsel * |
1766 | perf_evlist__find_by_index(struct perf_evlist *evlist, int idx) | |
1767 | { | |
1768 | struct perf_evsel *evsel; | |
1769 | ||
0050f7aa | 1770 | evlist__for_each(evlist, evsel) { |
7c2f7afd RR |
1771 | if (evsel->idx == idx) |
1772 | return evsel; | |
1773 | } | |
1774 | ||
1775 | return NULL; | |
1776 | } | |
1777 | ||
1778 | static void | |
3d7eb86b NK |
1779 | perf_evlist__set_event_name(struct perf_evlist *evlist, |
1780 | struct perf_evsel *event) | |
7c2f7afd RR |
1781 | { |
1782 | struct perf_evsel *evsel; | |
1783 | ||
1784 | if (!event->name) | |
1785 | return; | |
1786 | ||
1787 | evsel = perf_evlist__find_by_index(evlist, event->idx); | |
1788 | if (!evsel) | |
1789 | return; | |
1790 | ||
1791 | if (evsel->name) | |
1792 | return; | |
1793 | ||
1794 | evsel->name = strdup(event->name); | |
1795 | } | |
1796 | ||
1797 | static int | |
1d037ca1 | 1798 | process_event_desc(struct perf_file_section *section __maybe_unused, |
3d7eb86b | 1799 | struct perf_header *header, int fd, |
1d037ca1 | 1800 | void *data __maybe_unused) |
7c2f7afd | 1801 | { |
3d7eb86b | 1802 | struct perf_session *session; |
7c2f7afd RR |
1803 | struct perf_evsel *evsel, *events = read_event_desc(header, fd); |
1804 | ||
1805 | if (!events) | |
1806 | return 0; | |
1807 | ||
3d7eb86b | 1808 | session = container_of(header, struct perf_session, header); |
7c2f7afd RR |
1809 | for (evsel = events; evsel->attr.size; evsel++) |
1810 | perf_evlist__set_event_name(session->evlist, evsel); | |
1811 | ||
1812 | free_event_desc(events); | |
1813 | ||
1814 | return 0; | |
1815 | } | |
1816 | ||
a1ae5655 | 1817 | static int process_cmdline(struct perf_file_section *section __maybe_unused, |
3d7eb86b NK |
1818 | struct perf_header *ph, int fd, |
1819 | void *data __maybe_unused) | |
a1ae5655 | 1820 | { |
727ebd54 | 1821 | ssize_t ret; |
a1ae5655 NK |
1822 | char *str; |
1823 | u32 nr, i; | |
1824 | struct strbuf sb; | |
1825 | ||
5323f60c | 1826 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1827 | if (ret != sizeof(nr)) |
1828 | return -1; | |
1829 | ||
1830 | if (ph->needs_swap) | |
1831 | nr = bswap_32(nr); | |
1832 | ||
1833 | ph->env.nr_cmdline = nr; | |
1834 | strbuf_init(&sb, 128); | |
1835 | ||
1836 | for (i = 0; i < nr; i++) { | |
1837 | str = do_read_string(fd, ph); | |
1838 | if (!str) | |
1839 | goto error; | |
1840 | ||
1841 | /* include a NULL character at the end */ | |
1842 | strbuf_add(&sb, str, strlen(str) + 1); | |
1843 | free(str); | |
1844 | } | |
1845 | ph->env.cmdline = strbuf_detach(&sb, NULL); | |
1846 | return 0; | |
1847 | ||
1848 | error: | |
1849 | strbuf_release(&sb); | |
1850 | return -1; | |
1851 | } | |
1852 | ||
1853 | static int process_cpu_topology(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1854 | struct perf_header *ph, int fd, |
1855 | void *data __maybe_unused) | |
a1ae5655 | 1856 | { |
727ebd54 | 1857 | ssize_t ret; |
a1ae5655 NK |
1858 | u32 nr, i; |
1859 | char *str; | |
1860 | struct strbuf sb; | |
1861 | ||
5323f60c | 1862 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1863 | if (ret != sizeof(nr)) |
1864 | return -1; | |
1865 | ||
1866 | if (ph->needs_swap) | |
1867 | nr = bswap_32(nr); | |
1868 | ||
1869 | ph->env.nr_sibling_cores = nr; | |
1870 | strbuf_init(&sb, 128); | |
1871 | ||
1872 | for (i = 0; i < nr; i++) { | |
1873 | str = do_read_string(fd, ph); | |
1874 | if (!str) | |
1875 | goto error; | |
1876 | ||
1877 | /* include a NULL character at the end */ | |
1878 | strbuf_add(&sb, str, strlen(str) + 1); | |
1879 | free(str); | |
1880 | } | |
1881 | ph->env.sibling_cores = strbuf_detach(&sb, NULL); | |
1882 | ||
5323f60c | 1883 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1884 | if (ret != sizeof(nr)) |
1885 | return -1; | |
1886 | ||
1887 | if (ph->needs_swap) | |
1888 | nr = bswap_32(nr); | |
1889 | ||
1890 | ph->env.nr_sibling_threads = nr; | |
1891 | ||
1892 | for (i = 0; i < nr; i++) { | |
1893 | str = do_read_string(fd, ph); | |
1894 | if (!str) | |
1895 | goto error; | |
1896 | ||
1897 | /* include a NULL character at the end */ | |
1898 | strbuf_add(&sb, str, strlen(str) + 1); | |
1899 | free(str); | |
1900 | } | |
1901 | ph->env.sibling_threads = strbuf_detach(&sb, NULL); | |
1902 | return 0; | |
1903 | ||
1904 | error: | |
1905 | strbuf_release(&sb); | |
1906 | return -1; | |
1907 | } | |
1908 | ||
1909 | static int process_numa_topology(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1910 | struct perf_header *ph, int fd, |
1911 | void *data __maybe_unused) | |
a1ae5655 | 1912 | { |
727ebd54 | 1913 | ssize_t ret; |
a1ae5655 NK |
1914 | u32 nr, node, i; |
1915 | char *str; | |
1916 | uint64_t mem_total, mem_free; | |
1917 | struct strbuf sb; | |
1918 | ||
1919 | /* nr nodes */ | |
5323f60c | 1920 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1921 | if (ret != sizeof(nr)) |
1922 | goto error; | |
1923 | ||
1924 | if (ph->needs_swap) | |
1925 | nr = bswap_32(nr); | |
1926 | ||
1927 | ph->env.nr_numa_nodes = nr; | |
1928 | strbuf_init(&sb, 256); | |
1929 | ||
1930 | for (i = 0; i < nr; i++) { | |
1931 | /* node number */ | |
5323f60c | 1932 | ret = readn(fd, &node, sizeof(node)); |
a1ae5655 NK |
1933 | if (ret != sizeof(node)) |
1934 | goto error; | |
1935 | ||
5323f60c | 1936 | ret = readn(fd, &mem_total, sizeof(u64)); |
a1ae5655 NK |
1937 | if (ret != sizeof(u64)) |
1938 | goto error; | |
1939 | ||
5323f60c | 1940 | ret = readn(fd, &mem_free, sizeof(u64)); |
a1ae5655 NK |
1941 | if (ret != sizeof(u64)) |
1942 | goto error; | |
1943 | ||
1944 | if (ph->needs_swap) { | |
1945 | node = bswap_32(node); | |
1946 | mem_total = bswap_64(mem_total); | |
1947 | mem_free = bswap_64(mem_free); | |
1948 | } | |
1949 | ||
1950 | strbuf_addf(&sb, "%u:%"PRIu64":%"PRIu64":", | |
1951 | node, mem_total, mem_free); | |
1952 | ||
1953 | str = do_read_string(fd, ph); | |
1954 | if (!str) | |
1955 | goto error; | |
1956 | ||
1957 | /* include a NULL character at the end */ | |
1958 | strbuf_add(&sb, str, strlen(str) + 1); | |
1959 | free(str); | |
1960 | } | |
1961 | ph->env.numa_nodes = strbuf_detach(&sb, NULL); | |
1962 | return 0; | |
1963 | ||
1964 | error: | |
1965 | strbuf_release(&sb); | |
1966 | return -1; | |
1967 | } | |
1968 | ||
1969 | static int process_pmu_mappings(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1970 | struct perf_header *ph, int fd, |
1971 | void *data __maybe_unused) | |
a1ae5655 | 1972 | { |
727ebd54 | 1973 | ssize_t ret; |
a1ae5655 NK |
1974 | char *name; |
1975 | u32 pmu_num; | |
1976 | u32 type; | |
1977 | struct strbuf sb; | |
1978 | ||
5323f60c | 1979 | ret = readn(fd, &pmu_num, sizeof(pmu_num)); |
a1ae5655 NK |
1980 | if (ret != sizeof(pmu_num)) |
1981 | return -1; | |
1982 | ||
1983 | if (ph->needs_swap) | |
1984 | pmu_num = bswap_32(pmu_num); | |
1985 | ||
1986 | if (!pmu_num) { | |
1987 | pr_debug("pmu mappings not available\n"); | |
1988 | return 0; | |
1989 | } | |
1990 | ||
1991 | ph->env.nr_pmu_mappings = pmu_num; | |
1992 | strbuf_init(&sb, 128); | |
1993 | ||
1994 | while (pmu_num) { | |
5323f60c | 1995 | if (readn(fd, &type, sizeof(type)) != sizeof(type)) |
a1ae5655 NK |
1996 | goto error; |
1997 | if (ph->needs_swap) | |
1998 | type = bswap_32(type); | |
1999 | ||
2000 | name = do_read_string(fd, ph); | |
2001 | if (!name) | |
2002 | goto error; | |
2003 | ||
2004 | strbuf_addf(&sb, "%u:%s", type, name); | |
2005 | /* include a NULL character at the end */ | |
2006 | strbuf_add(&sb, "", 1); | |
2007 | ||
2008 | free(name); | |
2009 | pmu_num--; | |
2010 | } | |
2011 | ph->env.pmu_mappings = strbuf_detach(&sb, NULL); | |
2012 | return 0; | |
2013 | ||
2014 | error: | |
2015 | strbuf_release(&sb); | |
2016 | return -1; | |
2017 | } | |
2018 | ||
a8bb559b NK |
2019 | static int process_group_desc(struct perf_file_section *section __maybe_unused, |
2020 | struct perf_header *ph, int fd, | |
2021 | void *data __maybe_unused) | |
2022 | { | |
2023 | size_t ret = -1; | |
2024 | u32 i, nr, nr_groups; | |
2025 | struct perf_session *session; | |
2026 | struct perf_evsel *evsel, *leader = NULL; | |
2027 | struct group_desc { | |
2028 | char *name; | |
2029 | u32 leader_idx; | |
2030 | u32 nr_members; | |
2031 | } *desc; | |
2032 | ||
2033 | if (readn(fd, &nr_groups, sizeof(nr_groups)) != sizeof(nr_groups)) | |
2034 | return -1; | |
2035 | ||
2036 | if (ph->needs_swap) | |
2037 | nr_groups = bswap_32(nr_groups); | |
2038 | ||
2039 | ph->env.nr_groups = nr_groups; | |
2040 | if (!nr_groups) { | |
2041 | pr_debug("group desc not available\n"); | |
2042 | return 0; | |
2043 | } | |
2044 | ||
2045 | desc = calloc(nr_groups, sizeof(*desc)); | |
2046 | if (!desc) | |
2047 | return -1; | |
2048 | ||
2049 | for (i = 0; i < nr_groups; i++) { | |
2050 | desc[i].name = do_read_string(fd, ph); | |
2051 | if (!desc[i].name) | |
2052 | goto out_free; | |
2053 | ||
2054 | if (readn(fd, &desc[i].leader_idx, sizeof(u32)) != sizeof(u32)) | |
2055 | goto out_free; | |
2056 | ||
2057 | if (readn(fd, &desc[i].nr_members, sizeof(u32)) != sizeof(u32)) | |
2058 | goto out_free; | |
2059 | ||
2060 | if (ph->needs_swap) { | |
2061 | desc[i].leader_idx = bswap_32(desc[i].leader_idx); | |
2062 | desc[i].nr_members = bswap_32(desc[i].nr_members); | |
2063 | } | |
2064 | } | |
2065 | ||
2066 | /* | |
2067 | * Rebuild group relationship based on the group_desc | |
2068 | */ | |
2069 | session = container_of(ph, struct perf_session, header); | |
2070 | session->evlist->nr_groups = nr_groups; | |
2071 | ||
2072 | i = nr = 0; | |
0050f7aa | 2073 | evlist__for_each(session->evlist, evsel) { |
a8bb559b NK |
2074 | if (evsel->idx == (int) desc[i].leader_idx) { |
2075 | evsel->leader = evsel; | |
2076 | /* {anon_group} is a dummy name */ | |
210e812f | 2077 | if (strcmp(desc[i].name, "{anon_group}")) { |
a8bb559b | 2078 | evsel->group_name = desc[i].name; |
210e812f NK |
2079 | desc[i].name = NULL; |
2080 | } | |
a8bb559b NK |
2081 | evsel->nr_members = desc[i].nr_members; |
2082 | ||
2083 | if (i >= nr_groups || nr > 0) { | |
2084 | pr_debug("invalid group desc\n"); | |
2085 | goto out_free; | |
2086 | } | |
2087 | ||
2088 | leader = evsel; | |
2089 | nr = evsel->nr_members - 1; | |
2090 | i++; | |
2091 | } else if (nr) { | |
2092 | /* This is a group member */ | |
2093 | evsel->leader = leader; | |
2094 | ||
2095 | nr--; | |
2096 | } | |
2097 | } | |
2098 | ||
2099 | if (i != nr_groups || nr != 0) { | |
2100 | pr_debug("invalid group desc\n"); | |
2101 | goto out_free; | |
2102 | } | |
2103 | ||
2104 | ret = 0; | |
2105 | out_free: | |
50a2740b | 2106 | for (i = 0; i < nr_groups; i++) |
74cf249d | 2107 | zfree(&desc[i].name); |
a8bb559b NK |
2108 | free(desc); |
2109 | ||
2110 | return ret; | |
2111 | } | |
2112 | ||
fbe96f29 SE |
2113 | struct feature_ops { |
2114 | int (*write)(int fd, struct perf_header *h, struct perf_evlist *evlist); | |
2115 | void (*print)(struct perf_header *h, int fd, FILE *fp); | |
f1c67db7 | 2116 | int (*process)(struct perf_file_section *section, |
3d7eb86b | 2117 | struct perf_header *h, int fd, void *data); |
fbe96f29 SE |
2118 | const char *name; |
2119 | bool full_only; | |
2120 | }; | |
2121 | ||
8cdfa78a RR |
2122 | #define FEAT_OPA(n, func) \ |
2123 | [n] = { .name = #n, .write = write_##func, .print = print_##func } | |
f1c67db7 RR |
2124 | #define FEAT_OPP(n, func) \ |
2125 | [n] = { .name = #n, .write = write_##func, .print = print_##func, \ | |
2126 | .process = process_##func } | |
8cdfa78a | 2127 | #define FEAT_OPF(n, func) \ |
f1c67db7 | 2128 | [n] = { .name = #n, .write = write_##func, .print = print_##func, \ |
a1ae5655 | 2129 | .process = process_##func, .full_only = true } |
8cdfa78a RR |
2130 | |
2131 | /* feature_ops not implemented: */ | |
2eeaaa09 SE |
2132 | #define print_tracing_data NULL |
2133 | #define print_build_id NULL | |
fbe96f29 SE |
2134 | |
2135 | static const struct feature_ops feat_ops[HEADER_LAST_FEATURE] = { | |
2eeaaa09 | 2136 | FEAT_OPP(HEADER_TRACING_DATA, tracing_data), |
f1c67db7 | 2137 | FEAT_OPP(HEADER_BUILD_ID, build_id), |
a1ae5655 NK |
2138 | FEAT_OPP(HEADER_HOSTNAME, hostname), |
2139 | FEAT_OPP(HEADER_OSRELEASE, osrelease), | |
2140 | FEAT_OPP(HEADER_VERSION, version), | |
2141 | FEAT_OPP(HEADER_ARCH, arch), | |
2142 | FEAT_OPP(HEADER_NRCPUS, nrcpus), | |
2143 | FEAT_OPP(HEADER_CPUDESC, cpudesc), | |
37e9d750 | 2144 | FEAT_OPP(HEADER_CPUID, cpuid), |
a1ae5655 | 2145 | FEAT_OPP(HEADER_TOTAL_MEM, total_mem), |
7c2f7afd | 2146 | FEAT_OPP(HEADER_EVENT_DESC, event_desc), |
a1ae5655 | 2147 | FEAT_OPP(HEADER_CMDLINE, cmdline), |
8cdfa78a RR |
2148 | FEAT_OPF(HEADER_CPU_TOPOLOGY, cpu_topology), |
2149 | FEAT_OPF(HEADER_NUMA_TOPOLOGY, numa_topology), | |
330aa675 | 2150 | FEAT_OPA(HEADER_BRANCH_STACK, branch_stack), |
a1ae5655 | 2151 | FEAT_OPP(HEADER_PMU_MAPPINGS, pmu_mappings), |
a8bb559b | 2152 | FEAT_OPP(HEADER_GROUP_DESC, group_desc), |
fbe96f29 SE |
2153 | }; |
2154 | ||
2155 | struct header_print_data { | |
2156 | FILE *fp; | |
2157 | bool full; /* extended list of headers */ | |
2158 | }; | |
2159 | ||
2160 | static int perf_file_section__fprintf_info(struct perf_file_section *section, | |
2161 | struct perf_header *ph, | |
2162 | int feat, int fd, void *data) | |
2163 | { | |
2164 | struct header_print_data *hd = data; | |
2165 | ||
2166 | if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) { | |
2167 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " | |
2168 | "%d, continuing...\n", section->offset, feat); | |
2169 | return 0; | |
2170 | } | |
b1e5a9be | 2171 | if (feat >= HEADER_LAST_FEATURE) { |
fbe96f29 | 2172 | pr_warning("unknown feature %d\n", feat); |
f7a8a133 | 2173 | return 0; |
fbe96f29 SE |
2174 | } |
2175 | if (!feat_ops[feat].print) | |
2176 | return 0; | |
2177 | ||
2178 | if (!feat_ops[feat].full_only || hd->full) | |
2179 | feat_ops[feat].print(ph, fd, hd->fp); | |
2180 | else | |
2181 | fprintf(hd->fp, "# %s info available, use -I to display\n", | |
2182 | feat_ops[feat].name); | |
2183 | ||
2184 | return 0; | |
2185 | } | |
2186 | ||
2187 | int perf_header__fprintf_info(struct perf_session *session, FILE *fp, bool full) | |
2188 | { | |
2189 | struct header_print_data hd; | |
2190 | struct perf_header *header = &session->header; | |
cc9784bd | 2191 | int fd = perf_data_file__fd(session->file); |
fbe96f29 SE |
2192 | hd.fp = fp; |
2193 | hd.full = full; | |
2194 | ||
2195 | perf_header__process_sections(header, fd, &hd, | |
2196 | perf_file_section__fprintf_info); | |
2197 | return 0; | |
2198 | } | |
2199 | ||
fbe96f29 SE |
2200 | static int do_write_feat(int fd, struct perf_header *h, int type, |
2201 | struct perf_file_section **p, | |
2202 | struct perf_evlist *evlist) | |
2203 | { | |
2204 | int err; | |
2205 | int ret = 0; | |
2206 | ||
2207 | if (perf_header__has_feat(h, type)) { | |
b1e5a9be RR |
2208 | if (!feat_ops[type].write) |
2209 | return -1; | |
fbe96f29 SE |
2210 | |
2211 | (*p)->offset = lseek(fd, 0, SEEK_CUR); | |
2212 | ||
2213 | err = feat_ops[type].write(fd, h, evlist); | |
2214 | if (err < 0) { | |
2215 | pr_debug("failed to write feature %d\n", type); | |
2216 | ||
2217 | /* undo anything written */ | |
2218 | lseek(fd, (*p)->offset, SEEK_SET); | |
2219 | ||
2220 | return -1; | |
2221 | } | |
2222 | (*p)->size = lseek(fd, 0, SEEK_CUR) - (*p)->offset; | |
2223 | (*p)++; | |
2224 | } | |
2225 | return ret; | |
2226 | } | |
2227 | ||
1c0b04d1 | 2228 | static int perf_header__adds_write(struct perf_header *header, |
361c99a6 | 2229 | struct perf_evlist *evlist, int fd) |
2ba08250 | 2230 | { |
9e827dd0 | 2231 | int nr_sections; |
fbe96f29 | 2232 | struct perf_file_section *feat_sec, *p; |
9e827dd0 FW |
2233 | int sec_size; |
2234 | u64 sec_start; | |
b1e5a9be | 2235 | int feat; |
fbe96f29 | 2236 | int err; |
9e827dd0 | 2237 | |
1c0b04d1 | 2238 | nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS); |
9e827dd0 | 2239 | if (!nr_sections) |
d5eed904 | 2240 | return 0; |
9e827dd0 | 2241 | |
91b98804 | 2242 | feat_sec = p = calloc(nr_sections, sizeof(*feat_sec)); |
d5eed904 ACM |
2243 | if (feat_sec == NULL) |
2244 | return -ENOMEM; | |
9e827dd0 FW |
2245 | |
2246 | sec_size = sizeof(*feat_sec) * nr_sections; | |
2247 | ||
8d541e97 | 2248 | sec_start = header->feat_offset; |
f887f301 | 2249 | lseek(fd, sec_start + sec_size, SEEK_SET); |
2ba08250 | 2250 | |
b1e5a9be RR |
2251 | for_each_set_bit(feat, header->adds_features, HEADER_FEAT_BITS) { |
2252 | if (do_write_feat(fd, header, feat, &p, evlist)) | |
2253 | perf_header__clear_feat(header, feat); | |
2254 | } | |
9e827dd0 | 2255 | |
f887f301 | 2256 | lseek(fd, sec_start, SEEK_SET); |
fbe96f29 SE |
2257 | /* |
2258 | * may write more than needed due to dropped feature, but | |
2259 | * this is okay, reader will skip the mising entries | |
2260 | */ | |
d5eed904 ACM |
2261 | err = do_write(fd, feat_sec, sec_size); |
2262 | if (err < 0) | |
2263 | pr_debug("failed to write feature section\n"); | |
9e827dd0 | 2264 | free(feat_sec); |
d5eed904 | 2265 | return err; |
9e827dd0 | 2266 | } |
2ba08250 | 2267 | |
8dc58101 TZ |
2268 | int perf_header__write_pipe(int fd) |
2269 | { | |
2270 | struct perf_pipe_file_header f_header; | |
2271 | int err; | |
2272 | ||
2273 | f_header = (struct perf_pipe_file_header){ | |
2274 | .magic = PERF_MAGIC, | |
2275 | .size = sizeof(f_header), | |
2276 | }; | |
2277 | ||
2278 | err = do_write(fd, &f_header, sizeof(f_header)); | |
2279 | if (err < 0) { | |
2280 | pr_debug("failed to write perf pipe header\n"); | |
2281 | return err; | |
2282 | } | |
2283 | ||
2284 | return 0; | |
2285 | } | |
2286 | ||
a91e5431 ACM |
2287 | int perf_session__write_header(struct perf_session *session, |
2288 | struct perf_evlist *evlist, | |
2289 | int fd, bool at_exit) | |
7c6a1c65 PZ |
2290 | { |
2291 | struct perf_file_header f_header; | |
2292 | struct perf_file_attr f_attr; | |
1c0b04d1 | 2293 | struct perf_header *header = &session->header; |
563aecb2 | 2294 | struct perf_evsel *evsel; |
944d62ba | 2295 | u64 attr_offset; |
a91e5431 | 2296 | int err; |
7c6a1c65 PZ |
2297 | |
2298 | lseek(fd, sizeof(f_header), SEEK_SET); | |
2299 | ||
0050f7aa | 2300 | evlist__for_each(session->evlist, evsel) { |
6606f873 RR |
2301 | evsel->id_offset = lseek(fd, 0, SEEK_CUR); |
2302 | err = do_write(fd, evsel->id, evsel->ids * sizeof(u64)); | |
d5eed904 ACM |
2303 | if (err < 0) { |
2304 | pr_debug("failed to write perf header\n"); | |
2305 | return err; | |
2306 | } | |
7c6a1c65 PZ |
2307 | } |
2308 | ||
944d62ba | 2309 | attr_offset = lseek(fd, 0, SEEK_CUR); |
7c6a1c65 | 2310 | |
0050f7aa | 2311 | evlist__for_each(evlist, evsel) { |
7c6a1c65 | 2312 | f_attr = (struct perf_file_attr){ |
6606f873 | 2313 | .attr = evsel->attr, |
7c6a1c65 | 2314 | .ids = { |
6606f873 RR |
2315 | .offset = evsel->id_offset, |
2316 | .size = evsel->ids * sizeof(u64), | |
7c6a1c65 PZ |
2317 | } |
2318 | }; | |
d5eed904 ACM |
2319 | err = do_write(fd, &f_attr, sizeof(f_attr)); |
2320 | if (err < 0) { | |
2321 | pr_debug("failed to write perf header attribute\n"); | |
2322 | return err; | |
2323 | } | |
7c6a1c65 PZ |
2324 | } |
2325 | ||
d645c442 AH |
2326 | if (!header->data_offset) |
2327 | header->data_offset = lseek(fd, 0, SEEK_CUR); | |
8d541e97 | 2328 | header->feat_offset = header->data_offset + header->data_size; |
7c6a1c65 | 2329 | |
d5eed904 | 2330 | if (at_exit) { |
1c0b04d1 | 2331 | err = perf_header__adds_write(header, evlist, fd); |
d5eed904 ACM |
2332 | if (err < 0) |
2333 | return err; | |
2334 | } | |
9e827dd0 | 2335 | |
7c6a1c65 PZ |
2336 | f_header = (struct perf_file_header){ |
2337 | .magic = PERF_MAGIC, | |
2338 | .size = sizeof(f_header), | |
2339 | .attr_size = sizeof(f_attr), | |
2340 | .attrs = { | |
944d62ba | 2341 | .offset = attr_offset, |
a91e5431 | 2342 | .size = evlist->nr_entries * sizeof(f_attr), |
7c6a1c65 PZ |
2343 | }, |
2344 | .data = { | |
1c0b04d1 ACM |
2345 | .offset = header->data_offset, |
2346 | .size = header->data_size, | |
7c6a1c65 | 2347 | }, |
44b3c578 | 2348 | /* event_types is ignored, store zeros */ |
7c6a1c65 PZ |
2349 | }; |
2350 | ||
1c0b04d1 | 2351 | memcpy(&f_header.adds_features, &header->adds_features, sizeof(header->adds_features)); |
2ba08250 | 2352 | |
7c6a1c65 | 2353 | lseek(fd, 0, SEEK_SET); |
d5eed904 ACM |
2354 | err = do_write(fd, &f_header, sizeof(f_header)); |
2355 | if (err < 0) { | |
2356 | pr_debug("failed to write perf header\n"); | |
2357 | return err; | |
2358 | } | |
1c0b04d1 | 2359 | lseek(fd, header->data_offset + header->data_size, SEEK_SET); |
7c6a1c65 | 2360 | |
d5eed904 | 2361 | return 0; |
7c6a1c65 PZ |
2362 | } |
2363 | ||
1c0b04d1 | 2364 | static int perf_header__getbuffer64(struct perf_header *header, |
ba21594c ACM |
2365 | int fd, void *buf, size_t size) |
2366 | { | |
1e7972cc | 2367 | if (readn(fd, buf, size) <= 0) |
ba21594c ACM |
2368 | return -1; |
2369 | ||
1c0b04d1 | 2370 | if (header->needs_swap) |
ba21594c ACM |
2371 | mem_bswap_64(buf, size); |
2372 | ||
2373 | return 0; | |
2374 | } | |
2375 | ||
1c0b04d1 | 2376 | int perf_header__process_sections(struct perf_header *header, int fd, |
fbe96f29 | 2377 | void *data, |
1c0b04d1 | 2378 | int (*process)(struct perf_file_section *section, |
b1e5a9be RR |
2379 | struct perf_header *ph, |
2380 | int feat, int fd, void *data)) | |
2ba08250 | 2381 | { |
b1e5a9be | 2382 | struct perf_file_section *feat_sec, *sec; |
9e827dd0 FW |
2383 | int nr_sections; |
2384 | int sec_size; | |
b1e5a9be RR |
2385 | int feat; |
2386 | int err; | |
9e827dd0 | 2387 | |
1c0b04d1 | 2388 | nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS); |
9e827dd0 | 2389 | if (!nr_sections) |
37562eac | 2390 | return 0; |
9e827dd0 | 2391 | |
91b98804 | 2392 | feat_sec = sec = calloc(nr_sections, sizeof(*feat_sec)); |
9e827dd0 | 2393 | if (!feat_sec) |
37562eac | 2394 | return -1; |
9e827dd0 FW |
2395 | |
2396 | sec_size = sizeof(*feat_sec) * nr_sections; | |
2397 | ||
8d541e97 | 2398 | lseek(fd, header->feat_offset, SEEK_SET); |
9e827dd0 | 2399 | |
b1e5a9be RR |
2400 | err = perf_header__getbuffer64(header, fd, feat_sec, sec_size); |
2401 | if (err < 0) | |
769885f3 | 2402 | goto out_free; |
9e827dd0 | 2403 | |
b1e5a9be RR |
2404 | for_each_set_bit(feat, header->adds_features, HEADER_LAST_FEATURE) { |
2405 | err = process(sec++, header, feat, fd, data); | |
2406 | if (err < 0) | |
2407 | goto out_free; | |
2ba08250 | 2408 | } |
b1e5a9be | 2409 | err = 0; |
769885f3 | 2410 | out_free: |
37562eac ACM |
2411 | free(feat_sec); |
2412 | return err; | |
769885f3 | 2413 | } |
4778d2e4 | 2414 | |
114382a0 SE |
2415 | static const int attr_file_abi_sizes[] = { |
2416 | [0] = PERF_ATTR_SIZE_VER0, | |
2417 | [1] = PERF_ATTR_SIZE_VER1, | |
239cc478 | 2418 | [2] = PERF_ATTR_SIZE_VER2, |
0f6a3015 | 2419 | [3] = PERF_ATTR_SIZE_VER3, |
114382a0 SE |
2420 | 0, |
2421 | }; | |
2422 | ||
2423 | /* | |
2424 | * In the legacy file format, the magic number is not used to encode endianness. | |
2425 | * hdr_sz was used to encode endianness. But given that hdr_sz can vary based | |
2426 | * on ABI revisions, we need to try all combinations for all endianness to | |
2427 | * detect the endianness. | |
2428 | */ | |
2429 | static int try_all_file_abis(uint64_t hdr_sz, struct perf_header *ph) | |
73323f54 | 2430 | { |
114382a0 SE |
2431 | uint64_t ref_size, attr_size; |
2432 | int i; | |
73323f54 | 2433 | |
114382a0 SE |
2434 | for (i = 0 ; attr_file_abi_sizes[i]; i++) { |
2435 | ref_size = attr_file_abi_sizes[i] | |
2436 | + sizeof(struct perf_file_section); | |
2437 | if (hdr_sz != ref_size) { | |
2438 | attr_size = bswap_64(hdr_sz); | |
2439 | if (attr_size != ref_size) | |
2440 | continue; | |
73323f54 | 2441 | |
114382a0 SE |
2442 | ph->needs_swap = true; |
2443 | } | |
2444 | pr_debug("ABI%d perf.data file detected, need_swap=%d\n", | |
2445 | i, | |
2446 | ph->needs_swap); | |
2447 | return 0; | |
2448 | } | |
2449 | /* could not determine endianness */ | |
2450 | return -1; | |
2451 | } | |
73323f54 | 2452 | |
114382a0 SE |
2453 | #define PERF_PIPE_HDR_VER0 16 |
2454 | ||
2455 | static const size_t attr_pipe_abi_sizes[] = { | |
2456 | [0] = PERF_PIPE_HDR_VER0, | |
2457 | 0, | |
2458 | }; | |
2459 | ||
2460 | /* | |
2461 | * In the legacy pipe format, there is an implicit assumption that endiannesss | |
2462 | * between host recording the samples, and host parsing the samples is the | |
2463 | * same. This is not always the case given that the pipe output may always be | |
2464 | * redirected into a file and analyzed on a different machine with possibly a | |
2465 | * different endianness and perf_event ABI revsions in the perf tool itself. | |
2466 | */ | |
2467 | static int try_all_pipe_abis(uint64_t hdr_sz, struct perf_header *ph) | |
2468 | { | |
2469 | u64 attr_size; | |
2470 | int i; | |
2471 | ||
2472 | for (i = 0 ; attr_pipe_abi_sizes[i]; i++) { | |
2473 | if (hdr_sz != attr_pipe_abi_sizes[i]) { | |
2474 | attr_size = bswap_64(hdr_sz); | |
2475 | if (attr_size != hdr_sz) | |
2476 | continue; | |
73323f54 SE |
2477 | |
2478 | ph->needs_swap = true; | |
2479 | } | |
114382a0 | 2480 | pr_debug("Pipe ABI%d perf.data file detected\n", i); |
73323f54 SE |
2481 | return 0; |
2482 | } | |
114382a0 SE |
2483 | return -1; |
2484 | } | |
2485 | ||
e84ba4e2 FT |
2486 | bool is_perf_magic(u64 magic) |
2487 | { | |
2488 | if (!memcmp(&magic, __perf_magic1, sizeof(magic)) | |
2489 | || magic == __perf_magic2 | |
2490 | || magic == __perf_magic2_sw) | |
2491 | return true; | |
2492 | ||
2493 | return false; | |
2494 | } | |
2495 | ||
114382a0 SE |
2496 | static int check_magic_endian(u64 magic, uint64_t hdr_sz, |
2497 | bool is_pipe, struct perf_header *ph) | |
2498 | { | |
2499 | int ret; | |
2500 | ||
2501 | /* check for legacy format */ | |
2502 | ret = memcmp(&magic, __perf_magic1, sizeof(magic)); | |
2503 | if (ret == 0) { | |
2a08c3ec | 2504 | ph->version = PERF_HEADER_VERSION_1; |
114382a0 SE |
2505 | pr_debug("legacy perf.data format\n"); |
2506 | if (is_pipe) | |
2507 | return try_all_pipe_abis(hdr_sz, ph); | |
2508 | ||
2509 | return try_all_file_abis(hdr_sz, ph); | |
2510 | } | |
2511 | /* | |
2512 | * the new magic number serves two purposes: | |
2513 | * - unique number to identify actual perf.data files | |
2514 | * - encode endianness of file | |
2515 | */ | |
73323f54 | 2516 | |
114382a0 SE |
2517 | /* check magic number with one endianness */ |
2518 | if (magic == __perf_magic2) | |
73323f54 SE |
2519 | return 0; |
2520 | ||
114382a0 SE |
2521 | /* check magic number with opposite endianness */ |
2522 | if (magic != __perf_magic2_sw) | |
73323f54 SE |
2523 | return -1; |
2524 | ||
2525 | ph->needs_swap = true; | |
2a08c3ec | 2526 | ph->version = PERF_HEADER_VERSION_2; |
73323f54 SE |
2527 | |
2528 | return 0; | |
2529 | } | |
2530 | ||
1c0b04d1 | 2531 | int perf_file_header__read(struct perf_file_header *header, |
37562eac ACM |
2532 | struct perf_header *ph, int fd) |
2533 | { | |
727ebd54 | 2534 | ssize_t ret; |
73323f54 | 2535 | |
37562eac | 2536 | lseek(fd, 0, SEEK_SET); |
37562eac | 2537 | |
73323f54 SE |
2538 | ret = readn(fd, header, sizeof(*header)); |
2539 | if (ret <= 0) | |
37562eac ACM |
2540 | return -1; |
2541 | ||
114382a0 SE |
2542 | if (check_magic_endian(header->magic, |
2543 | header->attr_size, false, ph) < 0) { | |
2544 | pr_debug("magic/endian check failed\n"); | |
73323f54 | 2545 | return -1; |
114382a0 | 2546 | } |
ba21594c | 2547 | |
73323f54 | 2548 | if (ph->needs_swap) { |
1c0b04d1 | 2549 | mem_bswap_64(header, offsetof(struct perf_file_header, |
73323f54 | 2550 | adds_features)); |
ba21594c ACM |
2551 | } |
2552 | ||
1c0b04d1 | 2553 | if (header->size != sizeof(*header)) { |
37562eac | 2554 | /* Support the previous format */ |
1c0b04d1 ACM |
2555 | if (header->size == offsetof(typeof(*header), adds_features)) |
2556 | bitmap_zero(header->adds_features, HEADER_FEAT_BITS); | |
37562eac ACM |
2557 | else |
2558 | return -1; | |
d327fa43 | 2559 | } else if (ph->needs_swap) { |
d327fa43 DA |
2560 | /* |
2561 | * feature bitmap is declared as an array of unsigned longs -- | |
2562 | * not good since its size can differ between the host that | |
2563 | * generated the data file and the host analyzing the file. | |
2564 | * | |
2565 | * We need to handle endianness, but we don't know the size of | |
2566 | * the unsigned long where the file was generated. Take a best | |
2567 | * guess at determining it: try 64-bit swap first (ie., file | |
2568 | * created on a 64-bit host), and check if the hostname feature | |
2569 | * bit is set (this feature bit is forced on as of fbe96f2). | |
2570 | * If the bit is not, undo the 64-bit swap and try a 32-bit | |
2571 | * swap. If the hostname bit is still not set (e.g., older data | |
2572 | * file), punt and fallback to the original behavior -- | |
2573 | * clearing all feature bits and setting buildid. | |
2574 | */ | |
80c0120a DA |
2575 | mem_bswap_64(&header->adds_features, |
2576 | BITS_TO_U64(HEADER_FEAT_BITS)); | |
d327fa43 DA |
2577 | |
2578 | if (!test_bit(HEADER_HOSTNAME, header->adds_features)) { | |
80c0120a DA |
2579 | /* unswap as u64 */ |
2580 | mem_bswap_64(&header->adds_features, | |
2581 | BITS_TO_U64(HEADER_FEAT_BITS)); | |
2582 | ||
2583 | /* unswap as u32 */ | |
2584 | mem_bswap_32(&header->adds_features, | |
2585 | BITS_TO_U32(HEADER_FEAT_BITS)); | |
d327fa43 DA |
2586 | } |
2587 | ||
2588 | if (!test_bit(HEADER_HOSTNAME, header->adds_features)) { | |
2589 | bitmap_zero(header->adds_features, HEADER_FEAT_BITS); | |
2590 | set_bit(HEADER_BUILD_ID, header->adds_features); | |
2591 | } | |
4778d2e4 | 2592 | } |
9e827dd0 | 2593 | |
1c0b04d1 | 2594 | memcpy(&ph->adds_features, &header->adds_features, |
ba21594c | 2595 | sizeof(ph->adds_features)); |
37562eac | 2596 | |
1c0b04d1 ACM |
2597 | ph->data_offset = header->data.offset; |
2598 | ph->data_size = header->data.size; | |
8d541e97 | 2599 | ph->feat_offset = header->data.offset + header->data.size; |
37562eac ACM |
2600 | return 0; |
2601 | } | |
2602 | ||
1c0b04d1 | 2603 | static int perf_file_section__process(struct perf_file_section *section, |
ba21594c | 2604 | struct perf_header *ph, |
da378962 | 2605 | int feat, int fd, void *data) |
37562eac | 2606 | { |
1c0b04d1 | 2607 | if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) { |
9486aa38 | 2608 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " |
1c0b04d1 | 2609 | "%d, continuing...\n", section->offset, feat); |
37562eac ACM |
2610 | return 0; |
2611 | } | |
2612 | ||
b1e5a9be RR |
2613 | if (feat >= HEADER_LAST_FEATURE) { |
2614 | pr_debug("unknown feature %d, continuing...\n", feat); | |
2615 | return 0; | |
2616 | } | |
2617 | ||
f1c67db7 RR |
2618 | if (!feat_ops[feat].process) |
2619 | return 0; | |
37562eac | 2620 | |
3d7eb86b | 2621 | return feat_ops[feat].process(section, ph, fd, data); |
37562eac | 2622 | } |
2ba08250 | 2623 | |
1c0b04d1 | 2624 | static int perf_file_header__read_pipe(struct perf_pipe_file_header *header, |
454c407e TZ |
2625 | struct perf_header *ph, int fd, |
2626 | bool repipe) | |
7c6a1c65 | 2627 | { |
727ebd54 | 2628 | ssize_t ret; |
73323f54 SE |
2629 | |
2630 | ret = readn(fd, header, sizeof(*header)); | |
2631 | if (ret <= 0) | |
2632 | return -1; | |
2633 | ||
114382a0 SE |
2634 | if (check_magic_endian(header->magic, header->size, true, ph) < 0) { |
2635 | pr_debug("endian/magic failed\n"); | |
8dc58101 | 2636 | return -1; |
114382a0 SE |
2637 | } |
2638 | ||
2639 | if (ph->needs_swap) | |
2640 | header->size = bswap_64(header->size); | |
8dc58101 | 2641 | |
1c0b04d1 | 2642 | if (repipe && do_write(STDOUT_FILENO, header, sizeof(*header)) < 0) |
454c407e TZ |
2643 | return -1; |
2644 | ||
8dc58101 TZ |
2645 | return 0; |
2646 | } | |
2647 | ||
d4339569 | 2648 | static int perf_header__read_pipe(struct perf_session *session) |
8dc58101 | 2649 | { |
1c0b04d1 | 2650 | struct perf_header *header = &session->header; |
8dc58101 TZ |
2651 | struct perf_pipe_file_header f_header; |
2652 | ||
cc9784bd JO |
2653 | if (perf_file_header__read_pipe(&f_header, header, |
2654 | perf_data_file__fd(session->file), | |
454c407e | 2655 | session->repipe) < 0) { |
8dc58101 TZ |
2656 | pr_debug("incompatible file format\n"); |
2657 | return -EINVAL; | |
2658 | } | |
2659 | ||
8dc58101 TZ |
2660 | return 0; |
2661 | } | |
2662 | ||
69996df4 SE |
2663 | static int read_attr(int fd, struct perf_header *ph, |
2664 | struct perf_file_attr *f_attr) | |
2665 | { | |
2666 | struct perf_event_attr *attr = &f_attr->attr; | |
2667 | size_t sz, left; | |
2668 | size_t our_sz = sizeof(f_attr->attr); | |
727ebd54 | 2669 | ssize_t ret; |
69996df4 SE |
2670 | |
2671 | memset(f_attr, 0, sizeof(*f_attr)); | |
2672 | ||
2673 | /* read minimal guaranteed structure */ | |
2674 | ret = readn(fd, attr, PERF_ATTR_SIZE_VER0); | |
2675 | if (ret <= 0) { | |
2676 | pr_debug("cannot read %d bytes of header attr\n", | |
2677 | PERF_ATTR_SIZE_VER0); | |
2678 | return -1; | |
2679 | } | |
2680 | ||
2681 | /* on file perf_event_attr size */ | |
2682 | sz = attr->size; | |
114382a0 | 2683 | |
69996df4 SE |
2684 | if (ph->needs_swap) |
2685 | sz = bswap_32(sz); | |
2686 | ||
2687 | if (sz == 0) { | |
2688 | /* assume ABI0 */ | |
2689 | sz = PERF_ATTR_SIZE_VER0; | |
2690 | } else if (sz > our_sz) { | |
2691 | pr_debug("file uses a more recent and unsupported ABI" | |
2692 | " (%zu bytes extra)\n", sz - our_sz); | |
2693 | return -1; | |
2694 | } | |
2695 | /* what we have not yet read and that we know about */ | |
2696 | left = sz - PERF_ATTR_SIZE_VER0; | |
2697 | if (left) { | |
2698 | void *ptr = attr; | |
2699 | ptr += PERF_ATTR_SIZE_VER0; | |
2700 | ||
2701 | ret = readn(fd, ptr, left); | |
2702 | } | |
2703 | /* read perf_file_section, ids are read in caller */ | |
2704 | ret = readn(fd, &f_attr->ids, sizeof(f_attr->ids)); | |
2705 | ||
2706 | return ret <= 0 ? -1 : 0; | |
2707 | } | |
2708 | ||
831394bd NK |
2709 | static int perf_evsel__prepare_tracepoint_event(struct perf_evsel *evsel, |
2710 | struct pevent *pevent) | |
cb9dd49e | 2711 | { |
831394bd | 2712 | struct event_format *event; |
cb9dd49e ACM |
2713 | char bf[128]; |
2714 | ||
831394bd NK |
2715 | /* already prepared */ |
2716 | if (evsel->tp_format) | |
2717 | return 0; | |
2718 | ||
3dce2ce3 NK |
2719 | if (pevent == NULL) { |
2720 | pr_debug("broken or missing trace data\n"); | |
2721 | return -1; | |
2722 | } | |
2723 | ||
831394bd | 2724 | event = pevent_find_event(pevent, evsel->attr.config); |
cb9dd49e ACM |
2725 | if (event == NULL) |
2726 | return -1; | |
2727 | ||
831394bd NK |
2728 | if (!evsel->name) { |
2729 | snprintf(bf, sizeof(bf), "%s:%s", event->system, event->name); | |
2730 | evsel->name = strdup(bf); | |
2731 | if (evsel->name == NULL) | |
2732 | return -1; | |
2733 | } | |
cb9dd49e | 2734 | |
fcf65bf1 | 2735 | evsel->tp_format = event; |
cb9dd49e ACM |
2736 | return 0; |
2737 | } | |
2738 | ||
831394bd NK |
2739 | static int perf_evlist__prepare_tracepoint_events(struct perf_evlist *evlist, |
2740 | struct pevent *pevent) | |
cb9dd49e ACM |
2741 | { |
2742 | struct perf_evsel *pos; | |
2743 | ||
0050f7aa | 2744 | evlist__for_each(evlist, pos) { |
831394bd NK |
2745 | if (pos->attr.type == PERF_TYPE_TRACEPOINT && |
2746 | perf_evsel__prepare_tracepoint_event(pos, pevent)) | |
cb9dd49e ACM |
2747 | return -1; |
2748 | } | |
2749 | ||
2750 | return 0; | |
2751 | } | |
2752 | ||
d4339569 | 2753 | int perf_session__read_header(struct perf_session *session) |
8dc58101 | 2754 | { |
cc9784bd | 2755 | struct perf_data_file *file = session->file; |
1c0b04d1 | 2756 | struct perf_header *header = &session->header; |
ba21594c | 2757 | struct perf_file_header f_header; |
7c6a1c65 PZ |
2758 | struct perf_file_attr f_attr; |
2759 | u64 f_id; | |
7c6a1c65 | 2760 | int nr_attrs, nr_ids, i, j; |
cc9784bd | 2761 | int fd = perf_data_file__fd(file); |
7c6a1c65 | 2762 | |
334fe7a3 | 2763 | session->evlist = perf_evlist__new(); |
a91e5431 ACM |
2764 | if (session->evlist == NULL) |
2765 | return -ENOMEM; | |
2766 | ||
cc9784bd | 2767 | if (perf_data_file__is_pipe(file)) |
d4339569 | 2768 | return perf_header__read_pipe(session); |
8dc58101 | 2769 | |
69996df4 | 2770 | if (perf_file_header__read(&f_header, header, fd) < 0) |
4dc0a04b | 2771 | return -EINVAL; |
7c6a1c65 | 2772 | |
b314e5cf NK |
2773 | /* |
2774 | * Sanity check that perf.data was written cleanly; data size is | |
2775 | * initialized to 0 and updated only if the on_exit function is run. | |
2776 | * If data size is still 0 then the file contains only partial | |
2777 | * information. Just warn user and process it as much as it can. | |
2778 | */ | |
2779 | if (f_header.data.size == 0) { | |
2780 | pr_warning("WARNING: The %s file's data size field is 0 which is unexpected.\n" | |
2781 | "Was the 'perf record' command properly terminated?\n", | |
cc9784bd | 2782 | file->path); |
b314e5cf NK |
2783 | } |
2784 | ||
69996df4 | 2785 | nr_attrs = f_header.attrs.size / f_header.attr_size; |
7c6a1c65 PZ |
2786 | lseek(fd, f_header.attrs.offset, SEEK_SET); |
2787 | ||
2788 | for (i = 0; i < nr_attrs; i++) { | |
a91e5431 | 2789 | struct perf_evsel *evsel; |
1c222bce | 2790 | off_t tmp; |
7c6a1c65 | 2791 | |
69996df4 | 2792 | if (read_attr(fd, header, &f_attr) < 0) |
769885f3 | 2793 | goto out_errno; |
ba21594c | 2794 | |
eda3913b DA |
2795 | if (header->needs_swap) |
2796 | perf_event__attr_swap(&f_attr.attr); | |
2797 | ||
1c222bce | 2798 | tmp = lseek(fd, 0, SEEK_CUR); |
ef503831 | 2799 | evsel = perf_evsel__new(&f_attr.attr); |
7c6a1c65 | 2800 | |
a91e5431 ACM |
2801 | if (evsel == NULL) |
2802 | goto out_delete_evlist; | |
0807d2d8 ACM |
2803 | |
2804 | evsel->needs_swap = header->needs_swap; | |
a91e5431 ACM |
2805 | /* |
2806 | * Do it before so that if perf_evsel__alloc_id fails, this | |
2807 | * entry gets purged too at perf_evlist__delete(). | |
2808 | */ | |
2809 | perf_evlist__add(session->evlist, evsel); | |
7c6a1c65 PZ |
2810 | |
2811 | nr_ids = f_attr.ids.size / sizeof(u64); | |
a91e5431 ACM |
2812 | /* |
2813 | * We don't have the cpu and thread maps on the header, so | |
2814 | * for allocating the perf_sample_id table we fake 1 cpu and | |
2815 | * hattr->ids threads. | |
2816 | */ | |
2817 | if (perf_evsel__alloc_id(evsel, 1, nr_ids)) | |
2818 | goto out_delete_evlist; | |
2819 | ||
7c6a1c65 PZ |
2820 | lseek(fd, f_attr.ids.offset, SEEK_SET); |
2821 | ||
2822 | for (j = 0; j < nr_ids; j++) { | |
1c0b04d1 | 2823 | if (perf_header__getbuffer64(header, fd, &f_id, sizeof(f_id))) |
769885f3 | 2824 | goto out_errno; |
7c6a1c65 | 2825 | |
a91e5431 | 2826 | perf_evlist__id_add(session->evlist, evsel, 0, j, f_id); |
7c6a1c65 | 2827 | } |
11deb1f9 | 2828 | |
7c6a1c65 PZ |
2829 | lseek(fd, tmp, SEEK_SET); |
2830 | } | |
2831 | ||
d04b35f8 ACM |
2832 | symbol_conf.nr_events = nr_attrs; |
2833 | ||
29f5ffd3 | 2834 | perf_header__process_sections(header, fd, &session->tevent, |
fbe96f29 | 2835 | perf_file_section__process); |
4778d2e4 | 2836 | |
831394bd | 2837 | if (perf_evlist__prepare_tracepoint_events(session->evlist, |
29f5ffd3 | 2838 | session->tevent.pevent)) |
cb9dd49e ACM |
2839 | goto out_delete_evlist; |
2840 | ||
4dc0a04b | 2841 | return 0; |
769885f3 ACM |
2842 | out_errno: |
2843 | return -errno; | |
a91e5431 ACM |
2844 | |
2845 | out_delete_evlist: | |
2846 | perf_evlist__delete(session->evlist); | |
2847 | session->evlist = NULL; | |
2848 | return -ENOMEM; | |
7c6a1c65 | 2849 | } |
0d3a5c88 | 2850 | |
45694aa7 | 2851 | int perf_event__synthesize_attr(struct perf_tool *tool, |
f4d83436 | 2852 | struct perf_event_attr *attr, u32 ids, u64 *id, |
743eb868 | 2853 | perf_event__handler_t process) |
2c46dbb5 | 2854 | { |
8115d60c | 2855 | union perf_event *ev; |
2c46dbb5 TZ |
2856 | size_t size; |
2857 | int err; | |
2858 | ||
2859 | size = sizeof(struct perf_event_attr); | |
9ac3e487 | 2860 | size = PERF_ALIGN(size, sizeof(u64)); |
2c46dbb5 TZ |
2861 | size += sizeof(struct perf_event_header); |
2862 | size += ids * sizeof(u64); | |
2863 | ||
2864 | ev = malloc(size); | |
2865 | ||
ce47dc56 CS |
2866 | if (ev == NULL) |
2867 | return -ENOMEM; | |
2868 | ||
2c46dbb5 TZ |
2869 | ev->attr.attr = *attr; |
2870 | memcpy(ev->attr.id, id, ids * sizeof(u64)); | |
2871 | ||
2872 | ev->attr.header.type = PERF_RECORD_HEADER_ATTR; | |
f4d83436 | 2873 | ev->attr.header.size = (u16)size; |
2c46dbb5 | 2874 | |
f4d83436 RR |
2875 | if (ev->attr.header.size == size) |
2876 | err = process(tool, ev, NULL, NULL); | |
2877 | else | |
2878 | err = -E2BIG; | |
2c46dbb5 TZ |
2879 | |
2880 | free(ev); | |
2881 | ||
2882 | return err; | |
2883 | } | |
2884 | ||
45694aa7 | 2885 | int perf_event__synthesize_attrs(struct perf_tool *tool, |
d20deb64 | 2886 | struct perf_session *session, |
a91e5431 | 2887 | perf_event__handler_t process) |
2c46dbb5 | 2888 | { |
6606f873 | 2889 | struct perf_evsel *evsel; |
a91e5431 | 2890 | int err = 0; |
2c46dbb5 | 2891 | |
0050f7aa | 2892 | evlist__for_each(session->evlist, evsel) { |
6606f873 RR |
2893 | err = perf_event__synthesize_attr(tool, &evsel->attr, evsel->ids, |
2894 | evsel->id, process); | |
2c46dbb5 TZ |
2895 | if (err) { |
2896 | pr_debug("failed to create perf header attribute\n"); | |
2897 | return err; | |
2898 | } | |
2899 | } | |
2900 | ||
2901 | return err; | |
2902 | } | |
2903 | ||
47c3d109 AH |
2904 | int perf_event__process_attr(struct perf_tool *tool __maybe_unused, |
2905 | union perf_event *event, | |
10d0f086 | 2906 | struct perf_evlist **pevlist) |
2c46dbb5 | 2907 | { |
f4d83436 | 2908 | u32 i, ids, n_ids; |
a91e5431 | 2909 | struct perf_evsel *evsel; |
10d0f086 | 2910 | struct perf_evlist *evlist = *pevlist; |
2c46dbb5 | 2911 | |
10d0f086 | 2912 | if (evlist == NULL) { |
334fe7a3 | 2913 | *pevlist = evlist = perf_evlist__new(); |
10d0f086 | 2914 | if (evlist == NULL) |
a91e5431 ACM |
2915 | return -ENOMEM; |
2916 | } | |
2917 | ||
ef503831 | 2918 | evsel = perf_evsel__new(&event->attr.attr); |
a91e5431 | 2919 | if (evsel == NULL) |
2c46dbb5 TZ |
2920 | return -ENOMEM; |
2921 | ||
10d0f086 | 2922 | perf_evlist__add(evlist, evsel); |
a91e5431 | 2923 | |
8115d60c ACM |
2924 | ids = event->header.size; |
2925 | ids -= (void *)&event->attr.id - (void *)event; | |
2c46dbb5 | 2926 | n_ids = ids / sizeof(u64); |
a91e5431 ACM |
2927 | /* |
2928 | * We don't have the cpu and thread maps on the header, so | |
2929 | * for allocating the perf_sample_id table we fake 1 cpu and | |
2930 | * hattr->ids threads. | |
2931 | */ | |
2932 | if (perf_evsel__alloc_id(evsel, 1, n_ids)) | |
2933 | return -ENOMEM; | |
2c46dbb5 TZ |
2934 | |
2935 | for (i = 0; i < n_ids; i++) { | |
10d0f086 | 2936 | perf_evlist__id_add(evlist, evsel, 0, i, event->attr.id[i]); |
2c46dbb5 TZ |
2937 | } |
2938 | ||
7e0d6fc9 AH |
2939 | symbol_conf.nr_events = evlist->nr_entries; |
2940 | ||
2c46dbb5 TZ |
2941 | return 0; |
2942 | } | |
cd19a035 | 2943 | |
45694aa7 | 2944 | int perf_event__synthesize_tracing_data(struct perf_tool *tool, int fd, |
d20deb64 | 2945 | struct perf_evlist *evlist, |
743eb868 | 2946 | perf_event__handler_t process) |
9215545e | 2947 | { |
8115d60c | 2948 | union perf_event ev; |
29208e57 | 2949 | struct tracing_data *tdata; |
9215545e | 2950 | ssize_t size = 0, aligned_size = 0, padding; |
1d037ca1 | 2951 | int err __maybe_unused = 0; |
9215545e | 2952 | |
29208e57 JO |
2953 | /* |
2954 | * We are going to store the size of the data followed | |
2955 | * by the data contents. Since the fd descriptor is a pipe, | |
2956 | * we cannot seek back to store the size of the data once | |
2957 | * we know it. Instead we: | |
2958 | * | |
2959 | * - write the tracing data to the temp file | |
2960 | * - get/write the data size to pipe | |
2961 | * - write the tracing data from the temp file | |
2962 | * to the pipe | |
2963 | */ | |
2964 | tdata = tracing_data_get(&evlist->entries, fd, true); | |
2965 | if (!tdata) | |
2966 | return -1; | |
2967 | ||
9215545e TZ |
2968 | memset(&ev, 0, sizeof(ev)); |
2969 | ||
2970 | ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA; | |
29208e57 | 2971 | size = tdata->size; |
9ac3e487 | 2972 | aligned_size = PERF_ALIGN(size, sizeof(u64)); |
9215545e TZ |
2973 | padding = aligned_size - size; |
2974 | ev.tracing_data.header.size = sizeof(ev.tracing_data); | |
2975 | ev.tracing_data.size = aligned_size; | |
2976 | ||
45694aa7 | 2977 | process(tool, &ev, NULL, NULL); |
9215545e | 2978 | |
29208e57 JO |
2979 | /* |
2980 | * The put function will copy all the tracing data | |
2981 | * stored in temp file to the pipe. | |
2982 | */ | |
2983 | tracing_data_put(tdata); | |
2984 | ||
9215545e TZ |
2985 | write_padded(fd, NULL, 0, padding); |
2986 | ||
2987 | return aligned_size; | |
2988 | } | |
2989 | ||
47c3d109 AH |
2990 | int perf_event__process_tracing_data(struct perf_tool *tool __maybe_unused, |
2991 | union perf_event *event, | |
8115d60c | 2992 | struct perf_session *session) |
9215545e | 2993 | { |
8115d60c | 2994 | ssize_t size_read, padding, size = event->tracing_data.size; |
cc9784bd JO |
2995 | int fd = perf_data_file__fd(session->file); |
2996 | off_t offset = lseek(fd, 0, SEEK_CUR); | |
9215545e TZ |
2997 | char buf[BUFSIZ]; |
2998 | ||
2999 | /* setup for reading amidst mmap */ | |
cc9784bd | 3000 | lseek(fd, offset + sizeof(struct tracing_data_event), |
9215545e TZ |
3001 | SEEK_SET); |
3002 | ||
29f5ffd3 | 3003 | size_read = trace_report(fd, &session->tevent, |
da378962 | 3004 | session->repipe); |
9ac3e487 | 3005 | padding = PERF_ALIGN(size_read, sizeof(u64)) - size_read; |
9215545e | 3006 | |
cc9784bd | 3007 | if (readn(fd, buf, padding) < 0) { |
2caa48a2 ACM |
3008 | pr_err("%s: reading input file", __func__); |
3009 | return -1; | |
3010 | } | |
454c407e TZ |
3011 | if (session->repipe) { |
3012 | int retw = write(STDOUT_FILENO, buf, padding); | |
2caa48a2 ACM |
3013 | if (retw <= 0 || retw != padding) { |
3014 | pr_err("%s: repiping tracing data padding", __func__); | |
3015 | return -1; | |
3016 | } | |
454c407e | 3017 | } |
9215545e | 3018 | |
2caa48a2 ACM |
3019 | if (size_read + padding != size) { |
3020 | pr_err("%s: tracing data size mismatch", __func__); | |
3021 | return -1; | |
3022 | } | |
9215545e | 3023 | |
831394bd | 3024 | perf_evlist__prepare_tracepoint_events(session->evlist, |
29f5ffd3 | 3025 | session->tevent.pevent); |
8b6ee4c5 | 3026 | |
9215545e TZ |
3027 | return size_read + padding; |
3028 | } | |
c7929e47 | 3029 | |
45694aa7 | 3030 | int perf_event__synthesize_build_id(struct perf_tool *tool, |
d20deb64 | 3031 | struct dso *pos, u16 misc, |
8115d60c | 3032 | perf_event__handler_t process, |
743eb868 | 3033 | struct machine *machine) |
c7929e47 | 3034 | { |
8115d60c | 3035 | union perf_event ev; |
c7929e47 TZ |
3036 | size_t len; |
3037 | int err = 0; | |
3038 | ||
3039 | if (!pos->hit) | |
3040 | return err; | |
3041 | ||
3042 | memset(&ev, 0, sizeof(ev)); | |
3043 | ||
3044 | len = pos->long_name_len + 1; | |
9ac3e487 | 3045 | len = PERF_ALIGN(len, NAME_ALIGN); |
c7929e47 TZ |
3046 | memcpy(&ev.build_id.build_id, pos->build_id, sizeof(pos->build_id)); |
3047 | ev.build_id.header.type = PERF_RECORD_HEADER_BUILD_ID; | |
3048 | ev.build_id.header.misc = misc; | |
23346f21 | 3049 | ev.build_id.pid = machine->pid; |
c7929e47 TZ |
3050 | ev.build_id.header.size = sizeof(ev.build_id) + len; |
3051 | memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len); | |
3052 | ||
45694aa7 | 3053 | err = process(tool, &ev, NULL, machine); |
c7929e47 TZ |
3054 | |
3055 | return err; | |
3056 | } | |
3057 | ||
1d037ca1 | 3058 | int perf_event__process_build_id(struct perf_tool *tool __maybe_unused, |
d20deb64 | 3059 | union perf_event *event, |
8115d60c | 3060 | struct perf_session *session) |
c7929e47 | 3061 | { |
8115d60c ACM |
3062 | __event_process_build_id(&event->build_id, |
3063 | event->build_id.filename, | |
a1645ce1 | 3064 | session); |
c7929e47 TZ |
3065 | return 0; |
3066 | } | |
a1ac1d3c SE |
3067 | |
3068 | void disable_buildid_cache(void) | |
3069 | { | |
3070 | no_buildid_cache = true; | |
3071 | } |