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" |
7c6a1c65 | 25 | |
a1ac1d3c SE |
26 | static bool no_buildid_cache = false; |
27 | ||
db146f06 RR |
28 | static int trace_event_count; |
29 | static struct perf_trace_event_type *trace_events; | |
8755a8f2 | 30 | |
fbe96f29 SE |
31 | static u32 header_argc; |
32 | static const char **header_argv; | |
33 | ||
ae99fb2c | 34 | int perf_header__push_event(u64 id, const char *name) |
8755a8f2 | 35 | { |
f3054c77 UD |
36 | struct perf_trace_event_type *nevents; |
37 | ||
ec60a3fe | 38 | if (strlen(name) > MAX_EVENT_NAME) |
6beba7ad | 39 | pr_warning("Event %s will be truncated\n", name); |
8755a8f2 | 40 | |
db146f06 | 41 | nevents = realloc(trace_events, (trace_event_count + 1) * sizeof(*trace_events)); |
f3054c77 UD |
42 | if (nevents == NULL) |
43 | return -ENOMEM; | |
db146f06 | 44 | trace_events = nevents; |
ae99fb2c | 45 | |
db146f06 RR |
46 | memset(&trace_events[trace_event_count], 0, sizeof(struct perf_trace_event_type)); |
47 | trace_events[trace_event_count].event_id = id; | |
48 | strncpy(trace_events[trace_event_count].name, name, MAX_EVENT_NAME - 1); | |
49 | trace_event_count++; | |
ae99fb2c | 50 | return 0; |
8755a8f2 AV |
51 | } |
52 | ||
53 | char *perf_header__find_event(u64 id) | |
54 | { | |
55 | int i; | |
db146f06 RR |
56 | for (i = 0 ; i < trace_event_count; i++) { |
57 | if (trace_events[i].event_id == id) | |
58 | return trace_events[i].name; | |
8755a8f2 AV |
59 | } |
60 | return NULL; | |
61 | } | |
62 | ||
73323f54 SE |
63 | /* |
64 | * magic2 = "PERFILE2" | |
65 | * must be a numerical value to let the endianness | |
66 | * determine the memory layout. That way we are able | |
67 | * to detect endianness when reading the perf.data file | |
68 | * back. | |
69 | * | |
70 | * we check for legacy (PERFFILE) format. | |
71 | */ | |
72 | static const char *__perf_magic1 = "PERFFILE"; | |
73 | static const u64 __perf_magic2 = 0x32454c4946524550ULL; | |
74 | static const u64 __perf_magic2_sw = 0x50455246494c4532ULL; | |
7c6a1c65 | 75 | |
73323f54 | 76 | #define PERF_MAGIC __perf_magic2 |
7c6a1c65 | 77 | |
7c6a1c65 | 78 | struct perf_file_attr { |
cdd6c482 | 79 | struct perf_event_attr attr; |
7c6a1c65 PZ |
80 | struct perf_file_section ids; |
81 | }; | |
82 | ||
1c0b04d1 | 83 | void perf_header__set_feat(struct perf_header *header, int feat) |
8d06367f | 84 | { |
1c0b04d1 | 85 | set_bit(feat, header->adds_features); |
8d06367f ACM |
86 | } |
87 | ||
1c0b04d1 | 88 | void perf_header__clear_feat(struct perf_header *header, int feat) |
baa2f6ce | 89 | { |
1c0b04d1 | 90 | clear_bit(feat, header->adds_features); |
baa2f6ce ACM |
91 | } |
92 | ||
1c0b04d1 | 93 | bool perf_header__has_feat(const struct perf_header *header, int feat) |
8d06367f | 94 | { |
1c0b04d1 | 95 | return test_bit(feat, header->adds_features); |
8d06367f ACM |
96 | } |
97 | ||
3726cc75 | 98 | static int do_write(int fd, const void *buf, size_t size) |
7c6a1c65 PZ |
99 | { |
100 | while (size) { | |
101 | int ret = write(fd, buf, size); | |
102 | ||
103 | if (ret < 0) | |
d5eed904 | 104 | return -errno; |
7c6a1c65 PZ |
105 | |
106 | size -= ret; | |
107 | buf += ret; | |
108 | } | |
3726cc75 ACM |
109 | |
110 | return 0; | |
7c6a1c65 PZ |
111 | } |
112 | ||
f92cb24c ACM |
113 | #define NAME_ALIGN 64 |
114 | ||
115 | static int write_padded(int fd, const void *bf, size_t count, | |
116 | size_t count_aligned) | |
117 | { | |
118 | static const char zero_buf[NAME_ALIGN]; | |
119 | int err = do_write(fd, bf, count); | |
120 | ||
121 | if (!err) | |
122 | err = do_write(fd, zero_buf, count_aligned - count); | |
123 | ||
124 | return err; | |
125 | } | |
126 | ||
fbe96f29 SE |
127 | static int do_write_string(int fd, const char *str) |
128 | { | |
129 | u32 len, olen; | |
130 | int ret; | |
131 | ||
132 | olen = strlen(str) + 1; | |
9ac3e487 | 133 | len = PERF_ALIGN(olen, NAME_ALIGN); |
fbe96f29 SE |
134 | |
135 | /* write len, incl. \0 */ | |
136 | ret = do_write(fd, &len, sizeof(len)); | |
137 | if (ret < 0) | |
138 | return ret; | |
139 | ||
140 | return write_padded(fd, str, olen, len); | |
141 | } | |
142 | ||
143 | static char *do_read_string(int fd, struct perf_header *ph) | |
144 | { | |
145 | ssize_t sz, ret; | |
146 | u32 len; | |
147 | char *buf; | |
148 | ||
5323f60c | 149 | sz = readn(fd, &len, sizeof(len)); |
fbe96f29 SE |
150 | if (sz < (ssize_t)sizeof(len)) |
151 | return NULL; | |
152 | ||
153 | if (ph->needs_swap) | |
154 | len = bswap_32(len); | |
155 | ||
156 | buf = malloc(len); | |
157 | if (!buf) | |
158 | return NULL; | |
159 | ||
5323f60c | 160 | ret = readn(fd, buf, len); |
fbe96f29 SE |
161 | if (ret == (ssize_t)len) { |
162 | /* | |
163 | * strings are padded by zeroes | |
164 | * thus the actual strlen of buf | |
165 | * may be less than len | |
166 | */ | |
167 | return buf; | |
168 | } | |
169 | ||
170 | free(buf); | |
171 | return NULL; | |
172 | } | |
173 | ||
174 | int | |
175 | perf_header__set_cmdline(int argc, const char **argv) | |
176 | { | |
177 | int i; | |
178 | ||
56e6f602 DA |
179 | /* |
180 | * If header_argv has already been set, do not override it. | |
181 | * This allows a command to set the cmdline, parse args and | |
182 | * then call another builtin function that implements a | |
183 | * command -- e.g, cmd_kvm calling cmd_record. | |
184 | */ | |
185 | if (header_argv) | |
186 | return 0; | |
187 | ||
fbe96f29 SE |
188 | header_argc = (u32)argc; |
189 | ||
190 | /* do not include NULL termination */ | |
191 | header_argv = calloc(argc, sizeof(char *)); | |
192 | if (!header_argv) | |
193 | return -ENOMEM; | |
194 | ||
195 | /* | |
196 | * must copy argv contents because it gets moved | |
197 | * around during option parsing | |
198 | */ | |
199 | for (i = 0; i < argc ; i++) | |
200 | header_argv[i] = argv[i]; | |
201 | ||
202 | return 0; | |
203 | } | |
204 | ||
1b549504 RR |
205 | #define dsos__for_each_with_build_id(pos, head) \ |
206 | list_for_each_entry(pos, head, node) \ | |
207 | if (!pos->has_build_id) \ | |
208 | continue; \ | |
209 | else | |
210 | ||
7dbf4dcf JO |
211 | static int write_buildid(char *name, size_t name_len, u8 *build_id, |
212 | pid_t pid, u16 misc, int fd) | |
213 | { | |
214 | int err; | |
215 | struct build_id_event b; | |
216 | size_t len; | |
217 | ||
218 | len = name_len + 1; | |
219 | len = PERF_ALIGN(len, NAME_ALIGN); | |
220 | ||
221 | memset(&b, 0, sizeof(b)); | |
222 | memcpy(&b.build_id, build_id, BUILD_ID_SIZE); | |
223 | b.pid = pid; | |
224 | b.header.misc = misc; | |
225 | b.header.size = sizeof(b) + len; | |
226 | ||
227 | err = do_write(fd, &b, sizeof(b)); | |
228 | if (err < 0) | |
229 | return err; | |
230 | ||
231 | return write_padded(fd, name, name_len + 1, len); | |
232 | } | |
233 | ||
1b549504 RR |
234 | static int __dsos__write_buildid_table(struct list_head *head, pid_t pid, |
235 | u16 misc, int fd) | |
236 | { | |
237 | struct dso *pos; | |
238 | ||
239 | dsos__for_each_with_build_id(pos, head) { | |
240 | int err; | |
7dbf4dcf JO |
241 | char *name; |
242 | size_t name_len; | |
1b549504 RR |
243 | |
244 | if (!pos->hit) | |
245 | continue; | |
7dbf4dcf JO |
246 | |
247 | if (is_vdso_map(pos->short_name)) { | |
248 | name = (char *) VDSO__MAP_NAME; | |
249 | name_len = sizeof(VDSO__MAP_NAME) + 1; | |
250 | } else { | |
251 | name = pos->long_name; | |
252 | name_len = pos->long_name_len + 1; | |
253 | } | |
254 | ||
255 | err = write_buildid(name, name_len, pos->build_id, | |
256 | pid, misc, fd); | |
257 | if (err) | |
1b549504 RR |
258 | return err; |
259 | } | |
260 | ||
261 | return 0; | |
262 | } | |
263 | ||
264 | static int machine__write_buildid_table(struct machine *machine, int fd) | |
265 | { | |
266 | int err; | |
267 | u16 kmisc = PERF_RECORD_MISC_KERNEL, | |
268 | umisc = PERF_RECORD_MISC_USER; | |
269 | ||
270 | if (!machine__is_host(machine)) { | |
271 | kmisc = PERF_RECORD_MISC_GUEST_KERNEL; | |
272 | umisc = PERF_RECORD_MISC_GUEST_USER; | |
273 | } | |
274 | ||
275 | err = __dsos__write_buildid_table(&machine->kernel_dsos, machine->pid, | |
276 | kmisc, fd); | |
277 | if (err == 0) | |
278 | err = __dsos__write_buildid_table(&machine->user_dsos, | |
279 | machine->pid, umisc, fd); | |
280 | return err; | |
281 | } | |
282 | ||
283 | static int dsos__write_buildid_table(struct perf_header *header, int fd) | |
284 | { | |
285 | struct perf_session *session = container_of(header, | |
286 | struct perf_session, header); | |
287 | struct rb_node *nd; | |
876650e6 | 288 | int err = machine__write_buildid_table(&session->machines.host, fd); |
1b549504 RR |
289 | |
290 | if (err) | |
291 | return err; | |
292 | ||
876650e6 | 293 | for (nd = rb_first(&session->machines.guests); nd; nd = rb_next(nd)) { |
1b549504 RR |
294 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
295 | err = machine__write_buildid_table(pos, fd); | |
296 | if (err) | |
297 | break; | |
298 | } | |
299 | return err; | |
300 | } | |
301 | ||
302 | int build_id_cache__add_s(const char *sbuild_id, const char *debugdir, | |
7dbf4dcf | 303 | const char *name, bool is_kallsyms, bool is_vdso) |
1b549504 RR |
304 | { |
305 | const size_t size = PATH_MAX; | |
306 | char *realname, *filename = zalloc(size), | |
307 | *linkname = zalloc(size), *targetname; | |
308 | int len, err = -1; | |
7dbf4dcf | 309 | bool slash = is_kallsyms || is_vdso; |
1b549504 RR |
310 | |
311 | if (is_kallsyms) { | |
312 | if (symbol_conf.kptr_restrict) { | |
313 | pr_debug("Not caching a kptr_restrict'ed /proc/kallsyms\n"); | |
fdae6373 TJ |
314 | err = 0; |
315 | goto out_free; | |
1b549504 | 316 | } |
7dbf4dcf | 317 | realname = (char *) name; |
1b549504 RR |
318 | } else |
319 | realname = realpath(name, NULL); | |
320 | ||
321 | if (realname == NULL || filename == NULL || linkname == NULL) | |
322 | goto out_free; | |
323 | ||
e7f01d1e | 324 | len = scnprintf(filename, size, "%s%s%s", |
7dbf4dcf JO |
325 | debugdir, slash ? "/" : "", |
326 | is_vdso ? VDSO__MAP_NAME : realname); | |
1b549504 RR |
327 | if (mkdir_p(filename, 0755)) |
328 | goto out_free; | |
329 | ||
afda0f94 | 330 | snprintf(filename + len, size - len, "/%s", sbuild_id); |
1b549504 RR |
331 | |
332 | if (access(filename, F_OK)) { | |
333 | if (is_kallsyms) { | |
334 | if (copyfile("/proc/kallsyms", filename)) | |
335 | goto out_free; | |
336 | } else if (link(realname, filename) && copyfile(name, filename)) | |
337 | goto out_free; | |
338 | } | |
339 | ||
e7f01d1e | 340 | len = scnprintf(linkname, size, "%s/.build-id/%.2s", |
1b549504 RR |
341 | debugdir, sbuild_id); |
342 | ||
343 | if (access(linkname, X_OK) && mkdir_p(linkname, 0755)) | |
344 | goto out_free; | |
345 | ||
346 | snprintf(linkname + len, size - len, "/%s", sbuild_id + 2); | |
347 | targetname = filename + strlen(debugdir) - 5; | |
348 | memcpy(targetname, "../..", 5); | |
349 | ||
350 | if (symlink(targetname, linkname) == 0) | |
351 | err = 0; | |
352 | out_free: | |
353 | if (!is_kallsyms) | |
354 | free(realname); | |
355 | free(filename); | |
356 | free(linkname); | |
357 | return err; | |
358 | } | |
359 | ||
360 | static int build_id_cache__add_b(const u8 *build_id, size_t build_id_size, | |
361 | const char *name, const char *debugdir, | |
7dbf4dcf | 362 | bool is_kallsyms, bool is_vdso) |
1b549504 RR |
363 | { |
364 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; | |
365 | ||
366 | build_id__sprintf(build_id, build_id_size, sbuild_id); | |
367 | ||
7dbf4dcf JO |
368 | return build_id_cache__add_s(sbuild_id, debugdir, name, |
369 | is_kallsyms, is_vdso); | |
1b549504 RR |
370 | } |
371 | ||
372 | int build_id_cache__remove_s(const char *sbuild_id, const char *debugdir) | |
373 | { | |
374 | const size_t size = PATH_MAX; | |
375 | char *filename = zalloc(size), | |
376 | *linkname = zalloc(size); | |
377 | int err = -1; | |
378 | ||
379 | if (filename == NULL || linkname == NULL) | |
380 | goto out_free; | |
381 | ||
382 | snprintf(linkname, size, "%s/.build-id/%.2s/%s", | |
383 | debugdir, sbuild_id, sbuild_id + 2); | |
384 | ||
385 | if (access(linkname, F_OK)) | |
386 | goto out_free; | |
387 | ||
388 | if (readlink(linkname, filename, size - 1) < 0) | |
389 | goto out_free; | |
390 | ||
391 | if (unlink(linkname)) | |
392 | goto out_free; | |
393 | ||
394 | /* | |
395 | * Since the link is relative, we must make it absolute: | |
396 | */ | |
397 | snprintf(linkname, size, "%s/.build-id/%.2s/%s", | |
398 | debugdir, sbuild_id, filename); | |
399 | ||
400 | if (unlink(linkname)) | |
401 | goto out_free; | |
402 | ||
403 | err = 0; | |
404 | out_free: | |
405 | free(filename); | |
406 | free(linkname); | |
407 | return err; | |
408 | } | |
409 | ||
410 | static int dso__cache_build_id(struct dso *dso, const char *debugdir) | |
411 | { | |
412 | bool is_kallsyms = dso->kernel && dso->long_name[0] != '/'; | |
7dbf4dcf | 413 | bool is_vdso = is_vdso_map(dso->short_name); |
1b549504 RR |
414 | |
415 | return build_id_cache__add_b(dso->build_id, sizeof(dso->build_id), | |
7dbf4dcf JO |
416 | dso->long_name, debugdir, |
417 | is_kallsyms, is_vdso); | |
1b549504 RR |
418 | } |
419 | ||
420 | static int __dsos__cache_build_ids(struct list_head *head, const char *debugdir) | |
421 | { | |
422 | struct dso *pos; | |
423 | int err = 0; | |
424 | ||
425 | dsos__for_each_with_build_id(pos, head) | |
426 | if (dso__cache_build_id(pos, debugdir)) | |
427 | err = -1; | |
428 | ||
429 | return err; | |
430 | } | |
431 | ||
432 | static int machine__cache_build_ids(struct machine *machine, const char *debugdir) | |
433 | { | |
434 | int ret = __dsos__cache_build_ids(&machine->kernel_dsos, debugdir); | |
435 | ret |= __dsos__cache_build_ids(&machine->user_dsos, debugdir); | |
436 | return ret; | |
437 | } | |
438 | ||
439 | static int perf_session__cache_build_ids(struct perf_session *session) | |
440 | { | |
441 | struct rb_node *nd; | |
442 | int ret; | |
443 | char debugdir[PATH_MAX]; | |
444 | ||
445 | snprintf(debugdir, sizeof(debugdir), "%s", buildid_dir); | |
446 | ||
447 | if (mkdir(debugdir, 0755) != 0 && errno != EEXIST) | |
448 | return -1; | |
449 | ||
876650e6 | 450 | ret = machine__cache_build_ids(&session->machines.host, debugdir); |
1b549504 | 451 | |
876650e6 | 452 | for (nd = rb_first(&session->machines.guests); nd; nd = rb_next(nd)) { |
1b549504 RR |
453 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
454 | ret |= machine__cache_build_ids(pos, debugdir); | |
455 | } | |
456 | return ret ? -1 : 0; | |
457 | } | |
458 | ||
459 | static bool machine__read_build_ids(struct machine *machine, bool with_hits) | |
460 | { | |
461 | bool ret = __dsos__read_build_ids(&machine->kernel_dsos, with_hits); | |
462 | ret |= __dsos__read_build_ids(&machine->user_dsos, with_hits); | |
463 | return ret; | |
464 | } | |
465 | ||
466 | static bool perf_session__read_build_ids(struct perf_session *session, bool with_hits) | |
467 | { | |
468 | struct rb_node *nd; | |
876650e6 | 469 | bool ret = machine__read_build_ids(&session->machines.host, with_hits); |
1b549504 | 470 | |
876650e6 | 471 | for (nd = rb_first(&session->machines.guests); nd; nd = rb_next(nd)) { |
1b549504 RR |
472 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
473 | ret |= machine__read_build_ids(pos, with_hits); | |
474 | } | |
475 | ||
476 | return ret; | |
477 | } | |
478 | ||
1d037ca1 | 479 | static int write_tracing_data(int fd, struct perf_header *h __maybe_unused, |
fbe96f29 SE |
480 | struct perf_evlist *evlist) |
481 | { | |
482 | return read_tracing_data(fd, &evlist->entries); | |
483 | } | |
484 | ||
485 | ||
486 | static int write_build_id(int fd, struct perf_header *h, | |
1d037ca1 | 487 | struct perf_evlist *evlist __maybe_unused) |
fbe96f29 SE |
488 | { |
489 | struct perf_session *session; | |
490 | int err; | |
491 | ||
492 | session = container_of(h, struct perf_session, header); | |
493 | ||
e20960c0 RR |
494 | if (!perf_session__read_build_ids(session, true)) |
495 | return -1; | |
496 | ||
fbe96f29 SE |
497 | err = dsos__write_buildid_table(h, fd); |
498 | if (err < 0) { | |
499 | pr_debug("failed to write buildid table\n"); | |
500 | return err; | |
501 | } | |
502 | if (!no_buildid_cache) | |
503 | perf_session__cache_build_ids(session); | |
504 | ||
505 | return 0; | |
506 | } | |
507 | ||
1d037ca1 IT |
508 | static int write_hostname(int fd, struct perf_header *h __maybe_unused, |
509 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
510 | { |
511 | struct utsname uts; | |
512 | int ret; | |
513 | ||
514 | ret = uname(&uts); | |
515 | if (ret < 0) | |
516 | return -1; | |
517 | ||
518 | return do_write_string(fd, uts.nodename); | |
519 | } | |
520 | ||
1d037ca1 IT |
521 | static int write_osrelease(int fd, struct perf_header *h __maybe_unused, |
522 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
523 | { |
524 | struct utsname uts; | |
525 | int ret; | |
526 | ||
527 | ret = uname(&uts); | |
528 | if (ret < 0) | |
529 | return -1; | |
530 | ||
531 | return do_write_string(fd, uts.release); | |
532 | } | |
533 | ||
1d037ca1 IT |
534 | static int write_arch(int fd, struct perf_header *h __maybe_unused, |
535 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
536 | { |
537 | struct utsname uts; | |
538 | int ret; | |
539 | ||
540 | ret = uname(&uts); | |
541 | if (ret < 0) | |
542 | return -1; | |
543 | ||
544 | return do_write_string(fd, uts.machine); | |
545 | } | |
546 | ||
1d037ca1 IT |
547 | static int write_version(int fd, struct perf_header *h __maybe_unused, |
548 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
549 | { |
550 | return do_write_string(fd, perf_version_string); | |
551 | } | |
552 | ||
1d037ca1 IT |
553 | static int write_cpudesc(int fd, struct perf_header *h __maybe_unused, |
554 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
555 | { |
556 | #ifndef CPUINFO_PROC | |
557 | #define CPUINFO_PROC NULL | |
558 | #endif | |
559 | FILE *file; | |
560 | char *buf = NULL; | |
561 | char *s, *p; | |
562 | const char *search = CPUINFO_PROC; | |
563 | size_t len = 0; | |
564 | int ret = -1; | |
565 | ||
566 | if (!search) | |
567 | return -1; | |
568 | ||
569 | file = fopen("/proc/cpuinfo", "r"); | |
570 | if (!file) | |
571 | return -1; | |
572 | ||
573 | while (getline(&buf, &len, file) > 0) { | |
574 | ret = strncmp(buf, search, strlen(search)); | |
575 | if (!ret) | |
576 | break; | |
577 | } | |
578 | ||
579 | if (ret) | |
580 | goto done; | |
581 | ||
582 | s = buf; | |
583 | ||
584 | p = strchr(buf, ':'); | |
585 | if (p && *(p+1) == ' ' && *(p+2)) | |
586 | s = p + 2; | |
587 | p = strchr(s, '\n'); | |
588 | if (p) | |
589 | *p = '\0'; | |
590 | ||
591 | /* squash extra space characters (branding string) */ | |
592 | p = s; | |
593 | while (*p) { | |
594 | if (isspace(*p)) { | |
595 | char *r = p + 1; | |
596 | char *q = r; | |
597 | *p = ' '; | |
598 | while (*q && isspace(*q)) | |
599 | q++; | |
600 | if (q != (p+1)) | |
601 | while ((*r++ = *q++)); | |
602 | } | |
603 | p++; | |
604 | } | |
605 | ret = do_write_string(fd, s); | |
606 | done: | |
607 | free(buf); | |
608 | fclose(file); | |
609 | return ret; | |
610 | } | |
611 | ||
1d037ca1 IT |
612 | static int write_nrcpus(int fd, struct perf_header *h __maybe_unused, |
613 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
614 | { |
615 | long nr; | |
616 | u32 nrc, nra; | |
617 | int ret; | |
618 | ||
619 | nr = sysconf(_SC_NPROCESSORS_CONF); | |
620 | if (nr < 0) | |
621 | return -1; | |
622 | ||
623 | nrc = (u32)(nr & UINT_MAX); | |
624 | ||
625 | nr = sysconf(_SC_NPROCESSORS_ONLN); | |
626 | if (nr < 0) | |
627 | return -1; | |
628 | ||
629 | nra = (u32)(nr & UINT_MAX); | |
630 | ||
631 | ret = do_write(fd, &nrc, sizeof(nrc)); | |
632 | if (ret < 0) | |
633 | return ret; | |
634 | ||
635 | return do_write(fd, &nra, sizeof(nra)); | |
636 | } | |
637 | ||
1d037ca1 | 638 | static int write_event_desc(int fd, struct perf_header *h __maybe_unused, |
fbe96f29 SE |
639 | struct perf_evlist *evlist) |
640 | { | |
6606f873 | 641 | struct perf_evsel *evsel; |
74ba9e11 | 642 | u32 nre, nri, sz; |
fbe96f29 SE |
643 | int ret; |
644 | ||
74ba9e11 | 645 | nre = evlist->nr_entries; |
fbe96f29 SE |
646 | |
647 | /* | |
648 | * write number of events | |
649 | */ | |
650 | ret = do_write(fd, &nre, sizeof(nre)); | |
651 | if (ret < 0) | |
652 | return ret; | |
653 | ||
654 | /* | |
655 | * size of perf_event_attr struct | |
656 | */ | |
6606f873 | 657 | sz = (u32)sizeof(evsel->attr); |
fbe96f29 SE |
658 | ret = do_write(fd, &sz, sizeof(sz)); |
659 | if (ret < 0) | |
660 | return ret; | |
661 | ||
6606f873 | 662 | list_for_each_entry(evsel, &evlist->entries, node) { |
fbe96f29 | 663 | |
6606f873 | 664 | ret = do_write(fd, &evsel->attr, sz); |
fbe96f29 SE |
665 | if (ret < 0) |
666 | return ret; | |
667 | /* | |
668 | * write number of unique id per event | |
669 | * there is one id per instance of an event | |
670 | * | |
671 | * copy into an nri to be independent of the | |
672 | * type of ids, | |
673 | */ | |
6606f873 | 674 | nri = evsel->ids; |
fbe96f29 SE |
675 | ret = do_write(fd, &nri, sizeof(nri)); |
676 | if (ret < 0) | |
677 | return ret; | |
678 | ||
679 | /* | |
680 | * write event string as passed on cmdline | |
681 | */ | |
6606f873 | 682 | ret = do_write_string(fd, perf_evsel__name(evsel)); |
fbe96f29 SE |
683 | if (ret < 0) |
684 | return ret; | |
685 | /* | |
686 | * write unique ids for this event | |
687 | */ | |
6606f873 | 688 | ret = do_write(fd, evsel->id, evsel->ids * sizeof(u64)); |
fbe96f29 SE |
689 | if (ret < 0) |
690 | return ret; | |
691 | } | |
692 | return 0; | |
693 | } | |
694 | ||
1d037ca1 IT |
695 | static int write_cmdline(int fd, struct perf_header *h __maybe_unused, |
696 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
697 | { |
698 | char buf[MAXPATHLEN]; | |
699 | char proc[32]; | |
700 | u32 i, n; | |
701 | int ret; | |
702 | ||
703 | /* | |
704 | * actual atual path to perf binary | |
705 | */ | |
706 | sprintf(proc, "/proc/%d/exe", getpid()); | |
707 | ret = readlink(proc, buf, sizeof(buf)); | |
708 | if (ret <= 0) | |
709 | return -1; | |
710 | ||
711 | /* readlink() does not add null termination */ | |
712 | buf[ret] = '\0'; | |
713 | ||
714 | /* account for binary path */ | |
715 | n = header_argc + 1; | |
716 | ||
717 | ret = do_write(fd, &n, sizeof(n)); | |
718 | if (ret < 0) | |
719 | return ret; | |
720 | ||
721 | ret = do_write_string(fd, buf); | |
722 | if (ret < 0) | |
723 | return ret; | |
724 | ||
725 | for (i = 0 ; i < header_argc; i++) { | |
726 | ret = do_write_string(fd, header_argv[i]); | |
727 | if (ret < 0) | |
728 | return ret; | |
729 | } | |
730 | return 0; | |
731 | } | |
732 | ||
733 | #define CORE_SIB_FMT \ | |
734 | "/sys/devices/system/cpu/cpu%d/topology/core_siblings_list" | |
735 | #define THRD_SIB_FMT \ | |
736 | "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list" | |
737 | ||
738 | struct cpu_topo { | |
739 | u32 core_sib; | |
740 | u32 thread_sib; | |
741 | char **core_siblings; | |
742 | char **thread_siblings; | |
743 | }; | |
744 | ||
745 | static int build_cpu_topo(struct cpu_topo *tp, int cpu) | |
746 | { | |
747 | FILE *fp; | |
748 | char filename[MAXPATHLEN]; | |
749 | char *buf = NULL, *p; | |
750 | size_t len = 0; | |
751 | u32 i = 0; | |
752 | int ret = -1; | |
753 | ||
754 | sprintf(filename, CORE_SIB_FMT, cpu); | |
755 | fp = fopen(filename, "r"); | |
756 | if (!fp) | |
757 | return -1; | |
758 | ||
759 | if (getline(&buf, &len, fp) <= 0) | |
760 | goto done; | |
761 | ||
762 | fclose(fp); | |
763 | ||
764 | p = strchr(buf, '\n'); | |
765 | if (p) | |
766 | *p = '\0'; | |
767 | ||
768 | for (i = 0; i < tp->core_sib; i++) { | |
769 | if (!strcmp(buf, tp->core_siblings[i])) | |
770 | break; | |
771 | } | |
772 | if (i == tp->core_sib) { | |
773 | tp->core_siblings[i] = buf; | |
774 | tp->core_sib++; | |
775 | buf = NULL; | |
776 | len = 0; | |
777 | } | |
778 | ||
779 | sprintf(filename, THRD_SIB_FMT, cpu); | |
780 | fp = fopen(filename, "r"); | |
781 | if (!fp) | |
782 | goto done; | |
783 | ||
784 | if (getline(&buf, &len, fp) <= 0) | |
785 | goto done; | |
786 | ||
787 | p = strchr(buf, '\n'); | |
788 | if (p) | |
789 | *p = '\0'; | |
790 | ||
791 | for (i = 0; i < tp->thread_sib; i++) { | |
792 | if (!strcmp(buf, tp->thread_siblings[i])) | |
793 | break; | |
794 | } | |
795 | if (i == tp->thread_sib) { | |
796 | tp->thread_siblings[i] = buf; | |
797 | tp->thread_sib++; | |
798 | buf = NULL; | |
799 | } | |
800 | ret = 0; | |
801 | done: | |
802 | if(fp) | |
803 | fclose(fp); | |
804 | free(buf); | |
805 | return ret; | |
806 | } | |
807 | ||
808 | static void free_cpu_topo(struct cpu_topo *tp) | |
809 | { | |
810 | u32 i; | |
811 | ||
812 | if (!tp) | |
813 | return; | |
814 | ||
815 | for (i = 0 ; i < tp->core_sib; i++) | |
816 | free(tp->core_siblings[i]); | |
817 | ||
818 | for (i = 0 ; i < tp->thread_sib; i++) | |
819 | free(tp->thread_siblings[i]); | |
820 | ||
821 | free(tp); | |
822 | } | |
823 | ||
824 | static struct cpu_topo *build_cpu_topology(void) | |
825 | { | |
826 | struct cpu_topo *tp; | |
827 | void *addr; | |
828 | u32 nr, i; | |
829 | size_t sz; | |
830 | long ncpus; | |
831 | int ret = -1; | |
832 | ||
833 | ncpus = sysconf(_SC_NPROCESSORS_CONF); | |
834 | if (ncpus < 0) | |
835 | return NULL; | |
836 | ||
837 | nr = (u32)(ncpus & UINT_MAX); | |
838 | ||
839 | sz = nr * sizeof(char *); | |
840 | ||
841 | addr = calloc(1, sizeof(*tp) + 2 * sz); | |
842 | if (!addr) | |
843 | return NULL; | |
844 | ||
845 | tp = addr; | |
846 | ||
847 | addr += sizeof(*tp); | |
848 | tp->core_siblings = addr; | |
849 | addr += sz; | |
850 | tp->thread_siblings = addr; | |
851 | ||
852 | for (i = 0; i < nr; i++) { | |
853 | ret = build_cpu_topo(tp, i); | |
854 | if (ret < 0) | |
855 | break; | |
856 | } | |
857 | if (ret) { | |
858 | free_cpu_topo(tp); | |
859 | tp = NULL; | |
860 | } | |
861 | return tp; | |
862 | } | |
863 | ||
1d037ca1 IT |
864 | static int write_cpu_topology(int fd, struct perf_header *h __maybe_unused, |
865 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
866 | { |
867 | struct cpu_topo *tp; | |
868 | u32 i; | |
869 | int ret; | |
870 | ||
871 | tp = build_cpu_topology(); | |
872 | if (!tp) | |
873 | return -1; | |
874 | ||
875 | ret = do_write(fd, &tp->core_sib, sizeof(tp->core_sib)); | |
876 | if (ret < 0) | |
877 | goto done; | |
878 | ||
879 | for (i = 0; i < tp->core_sib; i++) { | |
880 | ret = do_write_string(fd, tp->core_siblings[i]); | |
881 | if (ret < 0) | |
882 | goto done; | |
883 | } | |
884 | ret = do_write(fd, &tp->thread_sib, sizeof(tp->thread_sib)); | |
885 | if (ret < 0) | |
886 | goto done; | |
887 | ||
888 | for (i = 0; i < tp->thread_sib; i++) { | |
889 | ret = do_write_string(fd, tp->thread_siblings[i]); | |
890 | if (ret < 0) | |
891 | break; | |
892 | } | |
893 | done: | |
894 | free_cpu_topo(tp); | |
895 | return ret; | |
896 | } | |
897 | ||
898 | ||
899 | ||
1d037ca1 IT |
900 | static int write_total_mem(int fd, struct perf_header *h __maybe_unused, |
901 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
902 | { |
903 | char *buf = NULL; | |
904 | FILE *fp; | |
905 | size_t len = 0; | |
906 | int ret = -1, n; | |
907 | uint64_t mem; | |
908 | ||
909 | fp = fopen("/proc/meminfo", "r"); | |
910 | if (!fp) | |
911 | return -1; | |
912 | ||
913 | while (getline(&buf, &len, fp) > 0) { | |
914 | ret = strncmp(buf, "MemTotal:", 9); | |
915 | if (!ret) | |
916 | break; | |
917 | } | |
918 | if (!ret) { | |
919 | n = sscanf(buf, "%*s %"PRIu64, &mem); | |
920 | if (n == 1) | |
921 | ret = do_write(fd, &mem, sizeof(mem)); | |
922 | } | |
923 | free(buf); | |
924 | fclose(fp); | |
925 | return ret; | |
926 | } | |
927 | ||
928 | static int write_topo_node(int fd, int node) | |
929 | { | |
930 | char str[MAXPATHLEN]; | |
931 | char field[32]; | |
932 | char *buf = NULL, *p; | |
933 | size_t len = 0; | |
934 | FILE *fp; | |
935 | u64 mem_total, mem_free, mem; | |
936 | int ret = -1; | |
937 | ||
938 | sprintf(str, "/sys/devices/system/node/node%d/meminfo", node); | |
939 | fp = fopen(str, "r"); | |
940 | if (!fp) | |
941 | return -1; | |
942 | ||
943 | while (getline(&buf, &len, fp) > 0) { | |
944 | /* skip over invalid lines */ | |
945 | if (!strchr(buf, ':')) | |
946 | continue; | |
947 | if (sscanf(buf, "%*s %*d %s %"PRIu64, field, &mem) != 2) | |
948 | goto done; | |
949 | if (!strcmp(field, "MemTotal:")) | |
950 | mem_total = mem; | |
951 | if (!strcmp(field, "MemFree:")) | |
952 | mem_free = mem; | |
953 | } | |
954 | ||
955 | fclose(fp); | |
5809fde0 | 956 | fp = NULL; |
fbe96f29 SE |
957 | |
958 | ret = do_write(fd, &mem_total, sizeof(u64)); | |
959 | if (ret) | |
960 | goto done; | |
961 | ||
962 | ret = do_write(fd, &mem_free, sizeof(u64)); | |
963 | if (ret) | |
964 | goto done; | |
965 | ||
966 | ret = -1; | |
967 | sprintf(str, "/sys/devices/system/node/node%d/cpulist", node); | |
968 | ||
969 | fp = fopen(str, "r"); | |
970 | if (!fp) | |
971 | goto done; | |
972 | ||
973 | if (getline(&buf, &len, fp) <= 0) | |
974 | goto done; | |
975 | ||
976 | p = strchr(buf, '\n'); | |
977 | if (p) | |
978 | *p = '\0'; | |
979 | ||
980 | ret = do_write_string(fd, buf); | |
981 | done: | |
982 | free(buf); | |
5809fde0 TJ |
983 | if (fp) |
984 | fclose(fp); | |
fbe96f29 SE |
985 | return ret; |
986 | } | |
987 | ||
1d037ca1 IT |
988 | static int write_numa_topology(int fd, struct perf_header *h __maybe_unused, |
989 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
990 | { |
991 | char *buf = NULL; | |
992 | size_t len = 0; | |
993 | FILE *fp; | |
994 | struct cpu_map *node_map = NULL; | |
995 | char *c; | |
996 | u32 nr, i, j; | |
997 | int ret = -1; | |
998 | ||
999 | fp = fopen("/sys/devices/system/node/online", "r"); | |
1000 | if (!fp) | |
1001 | return -1; | |
1002 | ||
1003 | if (getline(&buf, &len, fp) <= 0) | |
1004 | goto done; | |
1005 | ||
1006 | c = strchr(buf, '\n'); | |
1007 | if (c) | |
1008 | *c = '\0'; | |
1009 | ||
1010 | node_map = cpu_map__new(buf); | |
1011 | if (!node_map) | |
1012 | goto done; | |
1013 | ||
1014 | nr = (u32)node_map->nr; | |
1015 | ||
1016 | ret = do_write(fd, &nr, sizeof(nr)); | |
1017 | if (ret < 0) | |
1018 | goto done; | |
1019 | ||
1020 | for (i = 0; i < nr; i++) { | |
1021 | j = (u32)node_map->map[i]; | |
1022 | ret = do_write(fd, &j, sizeof(j)); | |
1023 | if (ret < 0) | |
1024 | break; | |
1025 | ||
1026 | ret = write_topo_node(fd, i); | |
1027 | if (ret < 0) | |
1028 | break; | |
1029 | } | |
1030 | done: | |
1031 | free(buf); | |
1032 | fclose(fp); | |
1033 | free(node_map); | |
1034 | return ret; | |
1035 | } | |
1036 | ||
50a9667c RR |
1037 | /* |
1038 | * File format: | |
1039 | * | |
1040 | * struct pmu_mappings { | |
1041 | * u32 pmu_num; | |
1042 | * struct pmu_map { | |
1043 | * u32 type; | |
1044 | * char name[]; | |
1045 | * }[pmu_num]; | |
1046 | * }; | |
1047 | */ | |
1048 | ||
1d037ca1 IT |
1049 | static int write_pmu_mappings(int fd, struct perf_header *h __maybe_unused, |
1050 | struct perf_evlist *evlist __maybe_unused) | |
50a9667c RR |
1051 | { |
1052 | struct perf_pmu *pmu = NULL; | |
1053 | off_t offset = lseek(fd, 0, SEEK_CUR); | |
1054 | __u32 pmu_num = 0; | |
5323f60c | 1055 | int ret; |
50a9667c RR |
1056 | |
1057 | /* write real pmu_num later */ | |
5323f60c NK |
1058 | ret = do_write(fd, &pmu_num, sizeof(pmu_num)); |
1059 | if (ret < 0) | |
1060 | return ret; | |
50a9667c RR |
1061 | |
1062 | while ((pmu = perf_pmu__scan(pmu))) { | |
1063 | if (!pmu->name) | |
1064 | continue; | |
1065 | pmu_num++; | |
5323f60c NK |
1066 | |
1067 | ret = do_write(fd, &pmu->type, sizeof(pmu->type)); | |
1068 | if (ret < 0) | |
1069 | return ret; | |
1070 | ||
1071 | ret = do_write_string(fd, pmu->name); | |
1072 | if (ret < 0) | |
1073 | return ret; | |
50a9667c RR |
1074 | } |
1075 | ||
1076 | if (pwrite(fd, &pmu_num, sizeof(pmu_num), offset) != sizeof(pmu_num)) { | |
1077 | /* discard all */ | |
1078 | lseek(fd, offset, SEEK_SET); | |
1079 | return -1; | |
1080 | } | |
1081 | ||
1082 | return 0; | |
1083 | } | |
1084 | ||
a8bb559b NK |
1085 | /* |
1086 | * File format: | |
1087 | * | |
1088 | * struct group_descs { | |
1089 | * u32 nr_groups; | |
1090 | * struct group_desc { | |
1091 | * char name[]; | |
1092 | * u32 leader_idx; | |
1093 | * u32 nr_members; | |
1094 | * }[nr_groups]; | |
1095 | * }; | |
1096 | */ | |
1097 | static int write_group_desc(int fd, struct perf_header *h __maybe_unused, | |
1098 | struct perf_evlist *evlist) | |
1099 | { | |
1100 | u32 nr_groups = evlist->nr_groups; | |
1101 | struct perf_evsel *evsel; | |
1102 | int ret; | |
1103 | ||
1104 | ret = do_write(fd, &nr_groups, sizeof(nr_groups)); | |
1105 | if (ret < 0) | |
1106 | return ret; | |
1107 | ||
1108 | list_for_each_entry(evsel, &evlist->entries, node) { | |
1109 | if (perf_evsel__is_group_leader(evsel) && | |
1110 | evsel->nr_members > 1) { | |
1111 | const char *name = evsel->group_name ?: "{anon_group}"; | |
1112 | u32 leader_idx = evsel->idx; | |
1113 | u32 nr_members = evsel->nr_members; | |
1114 | ||
1115 | ret = do_write_string(fd, name); | |
1116 | if (ret < 0) | |
1117 | return ret; | |
1118 | ||
1119 | ret = do_write(fd, &leader_idx, sizeof(leader_idx)); | |
1120 | if (ret < 0) | |
1121 | return ret; | |
1122 | ||
1123 | ret = do_write(fd, &nr_members, sizeof(nr_members)); | |
1124 | if (ret < 0) | |
1125 | return ret; | |
1126 | } | |
1127 | } | |
1128 | return 0; | |
1129 | } | |
1130 | ||
fbe96f29 SE |
1131 | /* |
1132 | * default get_cpuid(): nothing gets recorded | |
1133 | * actual implementation must be in arch/$(ARCH)/util/header.c | |
1134 | */ | |
1d037ca1 IT |
1135 | int __attribute__ ((weak)) get_cpuid(char *buffer __maybe_unused, |
1136 | size_t sz __maybe_unused) | |
fbe96f29 SE |
1137 | { |
1138 | return -1; | |
1139 | } | |
1140 | ||
1d037ca1 IT |
1141 | static int write_cpuid(int fd, struct perf_header *h __maybe_unused, |
1142 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
1143 | { |
1144 | char buffer[64]; | |
1145 | int ret; | |
1146 | ||
1147 | ret = get_cpuid(buffer, sizeof(buffer)); | |
1148 | if (!ret) | |
1149 | goto write_it; | |
1150 | ||
1151 | return -1; | |
1152 | write_it: | |
1153 | return do_write_string(fd, buffer); | |
1154 | } | |
1155 | ||
1d037ca1 IT |
1156 | static int write_branch_stack(int fd __maybe_unused, |
1157 | struct perf_header *h __maybe_unused, | |
1158 | struct perf_evlist *evlist __maybe_unused) | |
330aa675 SE |
1159 | { |
1160 | return 0; | |
1161 | } | |
1162 | ||
7e94cfcc NK |
1163 | static void print_hostname(struct perf_header *ph, int fd __maybe_unused, |
1164 | FILE *fp) | |
fbe96f29 | 1165 | { |
7e94cfcc | 1166 | fprintf(fp, "# hostname : %s\n", ph->env.hostname); |
fbe96f29 SE |
1167 | } |
1168 | ||
7e94cfcc NK |
1169 | static void print_osrelease(struct perf_header *ph, int fd __maybe_unused, |
1170 | FILE *fp) | |
fbe96f29 | 1171 | { |
7e94cfcc | 1172 | fprintf(fp, "# os release : %s\n", ph->env.os_release); |
fbe96f29 SE |
1173 | } |
1174 | ||
7e94cfcc | 1175 | static void print_arch(struct perf_header *ph, int fd __maybe_unused, FILE *fp) |
fbe96f29 | 1176 | { |
7e94cfcc | 1177 | fprintf(fp, "# arch : %s\n", ph->env.arch); |
fbe96f29 SE |
1178 | } |
1179 | ||
7e94cfcc NK |
1180 | static void print_cpudesc(struct perf_header *ph, int fd __maybe_unused, |
1181 | FILE *fp) | |
fbe96f29 | 1182 | { |
7e94cfcc | 1183 | fprintf(fp, "# cpudesc : %s\n", ph->env.cpu_desc); |
fbe96f29 SE |
1184 | } |
1185 | ||
7e94cfcc NK |
1186 | static void print_nrcpus(struct perf_header *ph, int fd __maybe_unused, |
1187 | FILE *fp) | |
fbe96f29 | 1188 | { |
7e94cfcc NK |
1189 | fprintf(fp, "# nrcpus online : %u\n", ph->env.nr_cpus_online); |
1190 | fprintf(fp, "# nrcpus avail : %u\n", ph->env.nr_cpus_avail); | |
fbe96f29 SE |
1191 | } |
1192 | ||
7e94cfcc NK |
1193 | static void print_version(struct perf_header *ph, int fd __maybe_unused, |
1194 | FILE *fp) | |
fbe96f29 | 1195 | { |
7e94cfcc | 1196 | fprintf(fp, "# perf version : %s\n", ph->env.version); |
fbe96f29 SE |
1197 | } |
1198 | ||
7e94cfcc NK |
1199 | static void print_cmdline(struct perf_header *ph, int fd __maybe_unused, |
1200 | FILE *fp) | |
fbe96f29 | 1201 | { |
7e94cfcc | 1202 | int nr, i; |
fbe96f29 | 1203 | char *str; |
fbe96f29 | 1204 | |
7e94cfcc NK |
1205 | nr = ph->env.nr_cmdline; |
1206 | str = ph->env.cmdline; | |
fbe96f29 SE |
1207 | |
1208 | fprintf(fp, "# cmdline : "); | |
1209 | ||
1210 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 1211 | fprintf(fp, "%s ", str); |
7e94cfcc | 1212 | str += strlen(str) + 1; |
fbe96f29 SE |
1213 | } |
1214 | fputc('\n', fp); | |
1215 | } | |
1216 | ||
7e94cfcc NK |
1217 | static void print_cpu_topology(struct perf_header *ph, int fd __maybe_unused, |
1218 | FILE *fp) | |
fbe96f29 | 1219 | { |
7e94cfcc | 1220 | int nr, i; |
fbe96f29 SE |
1221 | char *str; |
1222 | ||
7e94cfcc NK |
1223 | nr = ph->env.nr_sibling_cores; |
1224 | str = ph->env.sibling_cores; | |
fbe96f29 SE |
1225 | |
1226 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 1227 | fprintf(fp, "# sibling cores : %s\n", str); |
7e94cfcc | 1228 | str += strlen(str) + 1; |
fbe96f29 SE |
1229 | } |
1230 | ||
7e94cfcc NK |
1231 | nr = ph->env.nr_sibling_threads; |
1232 | str = ph->env.sibling_threads; | |
fbe96f29 SE |
1233 | |
1234 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 1235 | fprintf(fp, "# sibling threads : %s\n", str); |
7e94cfcc | 1236 | str += strlen(str) + 1; |
fbe96f29 SE |
1237 | } |
1238 | } | |
1239 | ||
4e1b9c67 | 1240 | static void free_event_desc(struct perf_evsel *events) |
fbe96f29 | 1241 | { |
4e1b9c67 RR |
1242 | struct perf_evsel *evsel; |
1243 | ||
1244 | if (!events) | |
1245 | return; | |
1246 | ||
1247 | for (evsel = events; evsel->attr.size; evsel++) { | |
1248 | if (evsel->name) | |
1249 | free(evsel->name); | |
1250 | if (evsel->id) | |
1251 | free(evsel->id); | |
1252 | } | |
1253 | ||
1254 | free(events); | |
1255 | } | |
1256 | ||
1257 | static struct perf_evsel * | |
1258 | read_event_desc(struct perf_header *ph, int fd) | |
1259 | { | |
1260 | struct perf_evsel *evsel, *events = NULL; | |
1261 | u64 *id; | |
fbe96f29 | 1262 | void *buf = NULL; |
62db9068 SE |
1263 | u32 nre, sz, nr, i, j; |
1264 | ssize_t ret; | |
1265 | size_t msz; | |
fbe96f29 SE |
1266 | |
1267 | /* number of events */ | |
5323f60c | 1268 | ret = readn(fd, &nre, sizeof(nre)); |
fbe96f29 SE |
1269 | if (ret != (ssize_t)sizeof(nre)) |
1270 | goto error; | |
1271 | ||
1272 | if (ph->needs_swap) | |
1273 | nre = bswap_32(nre); | |
1274 | ||
5323f60c | 1275 | ret = readn(fd, &sz, sizeof(sz)); |
fbe96f29 SE |
1276 | if (ret != (ssize_t)sizeof(sz)) |
1277 | goto error; | |
1278 | ||
1279 | if (ph->needs_swap) | |
1280 | sz = bswap_32(sz); | |
1281 | ||
62db9068 | 1282 | /* buffer to hold on file attr struct */ |
fbe96f29 SE |
1283 | buf = malloc(sz); |
1284 | if (!buf) | |
1285 | goto error; | |
1286 | ||
4e1b9c67 RR |
1287 | /* the last event terminates with evsel->attr.size == 0: */ |
1288 | events = calloc(nre + 1, sizeof(*events)); | |
1289 | if (!events) | |
1290 | goto error; | |
1291 | ||
1292 | msz = sizeof(evsel->attr); | |
9fafd98f | 1293 | if (sz < msz) |
fbe96f29 SE |
1294 | msz = sz; |
1295 | ||
4e1b9c67 RR |
1296 | for (i = 0, evsel = events; i < nre; evsel++, i++) { |
1297 | evsel->idx = i; | |
fbe96f29 | 1298 | |
62db9068 SE |
1299 | /* |
1300 | * must read entire on-file attr struct to | |
1301 | * sync up with layout. | |
1302 | */ | |
5323f60c | 1303 | ret = readn(fd, buf, sz); |
fbe96f29 SE |
1304 | if (ret != (ssize_t)sz) |
1305 | goto error; | |
1306 | ||
1307 | if (ph->needs_swap) | |
1308 | perf_event__attr_swap(buf); | |
1309 | ||
4e1b9c67 | 1310 | memcpy(&evsel->attr, buf, msz); |
fbe96f29 | 1311 | |
5323f60c | 1312 | ret = readn(fd, &nr, sizeof(nr)); |
fbe96f29 SE |
1313 | if (ret != (ssize_t)sizeof(nr)) |
1314 | goto error; | |
1315 | ||
0807d2d8 | 1316 | if (ph->needs_swap) { |
fbe96f29 | 1317 | nr = bswap_32(nr); |
0807d2d8 ACM |
1318 | evsel->needs_swap = true; |
1319 | } | |
fbe96f29 | 1320 | |
4e1b9c67 RR |
1321 | evsel->name = do_read_string(fd, ph); |
1322 | ||
1323 | if (!nr) | |
1324 | continue; | |
1325 | ||
1326 | id = calloc(nr, sizeof(*id)); | |
1327 | if (!id) | |
1328 | goto error; | |
1329 | evsel->ids = nr; | |
1330 | evsel->id = id; | |
1331 | ||
1332 | for (j = 0 ; j < nr; j++) { | |
5323f60c | 1333 | ret = readn(fd, id, sizeof(*id)); |
4e1b9c67 RR |
1334 | if (ret != (ssize_t)sizeof(*id)) |
1335 | goto error; | |
1336 | if (ph->needs_swap) | |
1337 | *id = bswap_64(*id); | |
1338 | id++; | |
1339 | } | |
1340 | } | |
1341 | out: | |
1342 | if (buf) | |
1343 | free(buf); | |
1344 | return events; | |
1345 | error: | |
1346 | if (events) | |
1347 | free_event_desc(events); | |
1348 | events = NULL; | |
1349 | goto out; | |
1350 | } | |
1351 | ||
1352 | static void print_event_desc(struct perf_header *ph, int fd, FILE *fp) | |
1353 | { | |
1354 | struct perf_evsel *evsel, *events = read_event_desc(ph, fd); | |
1355 | u32 j; | |
1356 | u64 *id; | |
1357 | ||
1358 | if (!events) { | |
1359 | fprintf(fp, "# event desc: not available or unable to read\n"); | |
1360 | return; | |
1361 | } | |
1362 | ||
1363 | for (evsel = events; evsel->attr.size; evsel++) { | |
1364 | fprintf(fp, "# event : name = %s, ", evsel->name); | |
fbe96f29 SE |
1365 | |
1366 | fprintf(fp, "type = %d, config = 0x%"PRIx64 | |
1367 | ", config1 = 0x%"PRIx64", config2 = 0x%"PRIx64, | |
4e1b9c67 RR |
1368 | evsel->attr.type, |
1369 | (u64)evsel->attr.config, | |
1370 | (u64)evsel->attr.config1, | |
1371 | (u64)evsel->attr.config2); | |
fbe96f29 SE |
1372 | |
1373 | fprintf(fp, ", excl_usr = %d, excl_kern = %d", | |
4e1b9c67 RR |
1374 | evsel->attr.exclude_user, |
1375 | evsel->attr.exclude_kernel); | |
fbe96f29 | 1376 | |
78b961ff | 1377 | fprintf(fp, ", excl_host = %d, excl_guest = %d", |
4e1b9c67 RR |
1378 | evsel->attr.exclude_host, |
1379 | evsel->attr.exclude_guest); | |
78b961ff | 1380 | |
4e1b9c67 | 1381 | fprintf(fp, ", precise_ip = %d", evsel->attr.precise_ip); |
78b961ff | 1382 | |
4e1b9c67 | 1383 | if (evsel->ids) { |
fbe96f29 | 1384 | fprintf(fp, ", id = {"); |
4e1b9c67 RR |
1385 | for (j = 0, id = evsel->id; j < evsel->ids; j++, id++) { |
1386 | if (j) | |
1387 | fputc(',', fp); | |
1388 | fprintf(fp, " %"PRIu64, *id); | |
1389 | } | |
fbe96f29 | 1390 | fprintf(fp, " }"); |
4e1b9c67 RR |
1391 | } |
1392 | ||
fbe96f29 SE |
1393 | fputc('\n', fp); |
1394 | } | |
4e1b9c67 RR |
1395 | |
1396 | free_event_desc(events); | |
fbe96f29 SE |
1397 | } |
1398 | ||
7e94cfcc | 1399 | static void print_total_mem(struct perf_header *ph, int fd __maybe_unused, |
1d037ca1 | 1400 | FILE *fp) |
fbe96f29 | 1401 | { |
7e94cfcc | 1402 | fprintf(fp, "# total memory : %Lu kB\n", ph->env.total_mem); |
fbe96f29 SE |
1403 | } |
1404 | ||
7e94cfcc | 1405 | static void print_numa_topology(struct perf_header *ph, int fd __maybe_unused, |
1d037ca1 | 1406 | FILE *fp) |
fbe96f29 | 1407 | { |
fbe96f29 | 1408 | u32 nr, c, i; |
7e94cfcc | 1409 | char *str, *tmp; |
fbe96f29 SE |
1410 | uint64_t mem_total, mem_free; |
1411 | ||
1412 | /* nr nodes */ | |
7e94cfcc NK |
1413 | nr = ph->env.nr_numa_nodes; |
1414 | str = ph->env.numa_nodes; | |
fbe96f29 SE |
1415 | |
1416 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 1417 | /* node number */ |
7e94cfcc NK |
1418 | c = strtoul(str, &tmp, 0); |
1419 | if (*tmp != ':') | |
fbe96f29 SE |
1420 | goto error; |
1421 | ||
7e94cfcc NK |
1422 | str = tmp + 1; |
1423 | mem_total = strtoull(str, &tmp, 0); | |
1424 | if (*tmp != ':') | |
fbe96f29 SE |
1425 | goto error; |
1426 | ||
7e94cfcc NK |
1427 | str = tmp + 1; |
1428 | mem_free = strtoull(str, &tmp, 0); | |
1429 | if (*tmp != ':') | |
fbe96f29 SE |
1430 | goto error; |
1431 | ||
fbe96f29 SE |
1432 | fprintf(fp, "# node%u meminfo : total = %"PRIu64" kB," |
1433 | " free = %"PRIu64" kB\n", | |
7e94cfcc | 1434 | c, mem_total, mem_free); |
fbe96f29 | 1435 | |
7e94cfcc | 1436 | str = tmp + 1; |
fbe96f29 | 1437 | fprintf(fp, "# node%u cpu list : %s\n", c, str); |
1234471e NK |
1438 | |
1439 | str += strlen(str) + 1; | |
fbe96f29 SE |
1440 | } |
1441 | return; | |
1442 | error: | |
1443 | fprintf(fp, "# numa topology : not available\n"); | |
1444 | } | |
1445 | ||
7e94cfcc | 1446 | static void print_cpuid(struct perf_header *ph, int fd __maybe_unused, FILE *fp) |
fbe96f29 | 1447 | { |
7e94cfcc | 1448 | fprintf(fp, "# cpuid : %s\n", ph->env.cpuid); |
fbe96f29 SE |
1449 | } |
1450 | ||
1d037ca1 | 1451 | static void print_branch_stack(struct perf_header *ph __maybe_unused, |
7e94cfcc | 1452 | int fd __maybe_unused, FILE *fp) |
330aa675 SE |
1453 | { |
1454 | fprintf(fp, "# contains samples with branch stack\n"); | |
1455 | } | |
1456 | ||
7e94cfcc NK |
1457 | static void print_pmu_mappings(struct perf_header *ph, int fd __maybe_unused, |
1458 | FILE *fp) | |
50a9667c RR |
1459 | { |
1460 | const char *delimiter = "# pmu mappings: "; | |
7e94cfcc | 1461 | char *str, *tmp; |
50a9667c RR |
1462 | u32 pmu_num; |
1463 | u32 type; | |
1464 | ||
7e94cfcc | 1465 | pmu_num = ph->env.nr_pmu_mappings; |
50a9667c RR |
1466 | if (!pmu_num) { |
1467 | fprintf(fp, "# pmu mappings: not available\n"); | |
1468 | return; | |
1469 | } | |
1470 | ||
7e94cfcc NK |
1471 | str = ph->env.pmu_mappings; |
1472 | ||
50a9667c | 1473 | while (pmu_num) { |
7e94cfcc NK |
1474 | type = strtoul(str, &tmp, 0); |
1475 | if (*tmp != ':') | |
1476 | goto error; | |
1477 | ||
1478 | str = tmp + 1; | |
1479 | fprintf(fp, "%s%s = %" PRIu32, delimiter, str, type); | |
be4a2ded | 1480 | |
50a9667c | 1481 | delimiter = ", "; |
7e94cfcc NK |
1482 | str += strlen(str) + 1; |
1483 | pmu_num--; | |
50a9667c RR |
1484 | } |
1485 | ||
1486 | fprintf(fp, "\n"); | |
1487 | ||
1488 | if (!pmu_num) | |
1489 | return; | |
1490 | error: | |
1491 | fprintf(fp, "# pmu mappings: unable to read\n"); | |
1492 | } | |
1493 | ||
a8bb559b NK |
1494 | static void print_group_desc(struct perf_header *ph, int fd __maybe_unused, |
1495 | FILE *fp) | |
1496 | { | |
1497 | struct perf_session *session; | |
1498 | struct perf_evsel *evsel; | |
1499 | u32 nr = 0; | |
1500 | ||
1501 | session = container_of(ph, struct perf_session, header); | |
1502 | ||
1503 | list_for_each_entry(evsel, &session->evlist->entries, node) { | |
1504 | if (perf_evsel__is_group_leader(evsel) && | |
1505 | evsel->nr_members > 1) { | |
1506 | fprintf(fp, "# group: %s{%s", evsel->group_name ?: "", | |
1507 | perf_evsel__name(evsel)); | |
1508 | ||
1509 | nr = evsel->nr_members - 1; | |
1510 | } else if (nr) { | |
1511 | fprintf(fp, ",%s", perf_evsel__name(evsel)); | |
1512 | ||
1513 | if (--nr == 0) | |
1514 | fprintf(fp, "}\n"); | |
1515 | } | |
1516 | } | |
1517 | } | |
1518 | ||
08d95bd2 RR |
1519 | static int __event_process_build_id(struct build_id_event *bev, |
1520 | char *filename, | |
1521 | struct perf_session *session) | |
1522 | { | |
1523 | int err = -1; | |
1524 | struct list_head *head; | |
1525 | struct machine *machine; | |
1526 | u16 misc; | |
1527 | struct dso *dso; | |
1528 | enum dso_kernel_type dso_type; | |
1529 | ||
1530 | machine = perf_session__findnew_machine(session, bev->pid); | |
1531 | if (!machine) | |
1532 | goto out; | |
1533 | ||
1534 | misc = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
1535 | ||
1536 | switch (misc) { | |
1537 | case PERF_RECORD_MISC_KERNEL: | |
1538 | dso_type = DSO_TYPE_KERNEL; | |
1539 | head = &machine->kernel_dsos; | |
1540 | break; | |
1541 | case PERF_RECORD_MISC_GUEST_KERNEL: | |
1542 | dso_type = DSO_TYPE_GUEST_KERNEL; | |
1543 | head = &machine->kernel_dsos; | |
1544 | break; | |
1545 | case PERF_RECORD_MISC_USER: | |
1546 | case PERF_RECORD_MISC_GUEST_USER: | |
1547 | dso_type = DSO_TYPE_USER; | |
1548 | head = &machine->user_dsos; | |
1549 | break; | |
1550 | default: | |
1551 | goto out; | |
1552 | } | |
1553 | ||
1554 | dso = __dsos__findnew(head, filename); | |
1555 | if (dso != NULL) { | |
1556 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; | |
1557 | ||
1558 | dso__set_build_id(dso, &bev->build_id); | |
1559 | ||
1560 | if (filename[0] == '[') | |
1561 | dso->kernel = dso_type; | |
1562 | ||
1563 | build_id__sprintf(dso->build_id, sizeof(dso->build_id), | |
1564 | sbuild_id); | |
1565 | pr_debug("build id event received for %s: %s\n", | |
1566 | dso->long_name, sbuild_id); | |
1567 | } | |
1568 | ||
1569 | err = 0; | |
1570 | out: | |
1571 | return err; | |
1572 | } | |
1573 | ||
1574 | static int perf_header__read_build_ids_abi_quirk(struct perf_header *header, | |
1575 | int input, u64 offset, u64 size) | |
1576 | { | |
1577 | struct perf_session *session = container_of(header, struct perf_session, header); | |
1578 | struct { | |
1579 | struct perf_event_header header; | |
9ac3e487 | 1580 | u8 build_id[PERF_ALIGN(BUILD_ID_SIZE, sizeof(u64))]; |
08d95bd2 RR |
1581 | char filename[0]; |
1582 | } old_bev; | |
1583 | struct build_id_event bev; | |
1584 | char filename[PATH_MAX]; | |
1585 | u64 limit = offset + size; | |
1586 | ||
1587 | while (offset < limit) { | |
1588 | ssize_t len; | |
1589 | ||
5323f60c | 1590 | if (readn(input, &old_bev, sizeof(old_bev)) != sizeof(old_bev)) |
08d95bd2 RR |
1591 | return -1; |
1592 | ||
1593 | if (header->needs_swap) | |
1594 | perf_event_header__bswap(&old_bev.header); | |
1595 | ||
1596 | len = old_bev.header.size - sizeof(old_bev); | |
5323f60c | 1597 | if (readn(input, filename, len) != len) |
08d95bd2 RR |
1598 | return -1; |
1599 | ||
1600 | bev.header = old_bev.header; | |
1601 | ||
1602 | /* | |
1603 | * As the pid is the missing value, we need to fill | |
1604 | * it properly. The header.misc value give us nice hint. | |
1605 | */ | |
1606 | bev.pid = HOST_KERNEL_ID; | |
1607 | if (bev.header.misc == PERF_RECORD_MISC_GUEST_USER || | |
1608 | bev.header.misc == PERF_RECORD_MISC_GUEST_KERNEL) | |
1609 | bev.pid = DEFAULT_GUEST_KERNEL_ID; | |
1610 | ||
1611 | memcpy(bev.build_id, old_bev.build_id, sizeof(bev.build_id)); | |
1612 | __event_process_build_id(&bev, filename, session); | |
1613 | ||
1614 | offset += bev.header.size; | |
1615 | } | |
1616 | ||
1617 | return 0; | |
1618 | } | |
1619 | ||
1620 | static int perf_header__read_build_ids(struct perf_header *header, | |
1621 | int input, u64 offset, u64 size) | |
1622 | { | |
1623 | struct perf_session *session = container_of(header, struct perf_session, header); | |
1624 | struct build_id_event bev; | |
1625 | char filename[PATH_MAX]; | |
1626 | u64 limit = offset + size, orig_offset = offset; | |
1627 | int err = -1; | |
1628 | ||
1629 | while (offset < limit) { | |
1630 | ssize_t len; | |
1631 | ||
5323f60c | 1632 | if (readn(input, &bev, sizeof(bev)) != sizeof(bev)) |
08d95bd2 RR |
1633 | goto out; |
1634 | ||
1635 | if (header->needs_swap) | |
1636 | perf_event_header__bswap(&bev.header); | |
1637 | ||
1638 | len = bev.header.size - sizeof(bev); | |
5323f60c | 1639 | if (readn(input, filename, len) != len) |
08d95bd2 RR |
1640 | goto out; |
1641 | /* | |
1642 | * The a1645ce1 changeset: | |
1643 | * | |
1644 | * "perf: 'perf kvm' tool for monitoring guest performance from host" | |
1645 | * | |
1646 | * Added a field to struct build_id_event that broke the file | |
1647 | * format. | |
1648 | * | |
1649 | * Since the kernel build-id is the first entry, process the | |
1650 | * table using the old format if the well known | |
1651 | * '[kernel.kallsyms]' string for the kernel build-id has the | |
1652 | * first 4 characters chopped off (where the pid_t sits). | |
1653 | */ | |
1654 | if (memcmp(filename, "nel.kallsyms]", 13) == 0) { | |
1655 | if (lseek(input, orig_offset, SEEK_SET) == (off_t)-1) | |
1656 | return -1; | |
1657 | return perf_header__read_build_ids_abi_quirk(header, input, offset, size); | |
1658 | } | |
1659 | ||
1660 | __event_process_build_id(&bev, filename, session); | |
1661 | ||
1662 | offset += bev.header.size; | |
1663 | } | |
1664 | err = 0; | |
1665 | out: | |
1666 | return err; | |
1667 | } | |
1668 | ||
3d7eb86b NK |
1669 | static int process_tracing_data(struct perf_file_section *section __maybe_unused, |
1670 | struct perf_header *ph __maybe_unused, | |
1671 | int fd, void *data) | |
f1c67db7 | 1672 | { |
da378962 | 1673 | trace_report(fd, data, false); |
f1c67db7 RR |
1674 | return 0; |
1675 | } | |
1676 | ||
1677 | static int process_build_id(struct perf_file_section *section, | |
3d7eb86b | 1678 | struct perf_header *ph, int fd, |
1d037ca1 | 1679 | void *data __maybe_unused) |
f1c67db7 RR |
1680 | { |
1681 | if (perf_header__read_build_ids(ph, fd, section->offset, section->size)) | |
1682 | pr_debug("Failed to read buildids, continuing...\n"); | |
1683 | return 0; | |
1684 | } | |
1685 | ||
a1ae5655 | 1686 | static int process_hostname(struct perf_file_section *section __maybe_unused, |
3d7eb86b NK |
1687 | struct perf_header *ph, int fd, |
1688 | void *data __maybe_unused) | |
a1ae5655 NK |
1689 | { |
1690 | ph->env.hostname = do_read_string(fd, ph); | |
1691 | return ph->env.hostname ? 0 : -ENOMEM; | |
1692 | } | |
1693 | ||
1694 | static int process_osrelease(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1695 | struct perf_header *ph, int fd, |
1696 | void *data __maybe_unused) | |
a1ae5655 NK |
1697 | { |
1698 | ph->env.os_release = do_read_string(fd, ph); | |
1699 | return ph->env.os_release ? 0 : -ENOMEM; | |
1700 | } | |
1701 | ||
1702 | static int process_version(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1703 | struct perf_header *ph, int fd, |
1704 | void *data __maybe_unused) | |
a1ae5655 NK |
1705 | { |
1706 | ph->env.version = do_read_string(fd, ph); | |
1707 | return ph->env.version ? 0 : -ENOMEM; | |
1708 | } | |
1709 | ||
1710 | static int process_arch(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1711 | struct perf_header *ph, int fd, |
1712 | void *data __maybe_unused) | |
a1ae5655 NK |
1713 | { |
1714 | ph->env.arch = do_read_string(fd, ph); | |
1715 | return ph->env.arch ? 0 : -ENOMEM; | |
1716 | } | |
1717 | ||
1718 | static int process_nrcpus(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1719 | struct perf_header *ph, int fd, |
1720 | void *data __maybe_unused) | |
a1ae5655 NK |
1721 | { |
1722 | size_t ret; | |
1723 | u32 nr; | |
1724 | ||
5323f60c | 1725 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1726 | if (ret != sizeof(nr)) |
1727 | return -1; | |
1728 | ||
1729 | if (ph->needs_swap) | |
1730 | nr = bswap_32(nr); | |
1731 | ||
1732 | ph->env.nr_cpus_online = nr; | |
1733 | ||
5323f60c | 1734 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1735 | if (ret != sizeof(nr)) |
1736 | return -1; | |
1737 | ||
1738 | if (ph->needs_swap) | |
1739 | nr = bswap_32(nr); | |
1740 | ||
1741 | ph->env.nr_cpus_avail = nr; | |
1742 | return 0; | |
1743 | } | |
1744 | ||
1745 | static int process_cpudesc(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1746 | struct perf_header *ph, int fd, |
1747 | void *data __maybe_unused) | |
a1ae5655 NK |
1748 | { |
1749 | ph->env.cpu_desc = do_read_string(fd, ph); | |
1750 | return ph->env.cpu_desc ? 0 : -ENOMEM; | |
1751 | } | |
1752 | ||
1753 | static int process_cpuid(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1754 | struct perf_header *ph, int fd, |
1755 | void *data __maybe_unused) | |
a1ae5655 NK |
1756 | { |
1757 | ph->env.cpuid = do_read_string(fd, ph); | |
1758 | return ph->env.cpuid ? 0 : -ENOMEM; | |
1759 | } | |
1760 | ||
1761 | static int process_total_mem(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1762 | struct perf_header *ph, int fd, |
1763 | void *data __maybe_unused) | |
a1ae5655 NK |
1764 | { |
1765 | uint64_t mem; | |
1766 | size_t ret; | |
1767 | ||
5323f60c | 1768 | ret = readn(fd, &mem, sizeof(mem)); |
a1ae5655 NK |
1769 | if (ret != sizeof(mem)) |
1770 | return -1; | |
1771 | ||
1772 | if (ph->needs_swap) | |
1773 | mem = bswap_64(mem); | |
1774 | ||
1775 | ph->env.total_mem = mem; | |
1776 | return 0; | |
1777 | } | |
1778 | ||
7c2f7afd RR |
1779 | static struct perf_evsel * |
1780 | perf_evlist__find_by_index(struct perf_evlist *evlist, int idx) | |
1781 | { | |
1782 | struct perf_evsel *evsel; | |
1783 | ||
1784 | list_for_each_entry(evsel, &evlist->entries, node) { | |
1785 | if (evsel->idx == idx) | |
1786 | return evsel; | |
1787 | } | |
1788 | ||
1789 | return NULL; | |
1790 | } | |
1791 | ||
1792 | static void | |
3d7eb86b NK |
1793 | perf_evlist__set_event_name(struct perf_evlist *evlist, |
1794 | struct perf_evsel *event) | |
7c2f7afd RR |
1795 | { |
1796 | struct perf_evsel *evsel; | |
1797 | ||
1798 | if (!event->name) | |
1799 | return; | |
1800 | ||
1801 | evsel = perf_evlist__find_by_index(evlist, event->idx); | |
1802 | if (!evsel) | |
1803 | return; | |
1804 | ||
1805 | if (evsel->name) | |
1806 | return; | |
1807 | ||
1808 | evsel->name = strdup(event->name); | |
1809 | } | |
1810 | ||
1811 | static int | |
1d037ca1 | 1812 | process_event_desc(struct perf_file_section *section __maybe_unused, |
3d7eb86b | 1813 | struct perf_header *header, int fd, |
1d037ca1 | 1814 | void *data __maybe_unused) |
7c2f7afd | 1815 | { |
3d7eb86b | 1816 | struct perf_session *session; |
7c2f7afd RR |
1817 | struct perf_evsel *evsel, *events = read_event_desc(header, fd); |
1818 | ||
1819 | if (!events) | |
1820 | return 0; | |
1821 | ||
3d7eb86b | 1822 | session = container_of(header, struct perf_session, header); |
7c2f7afd RR |
1823 | for (evsel = events; evsel->attr.size; evsel++) |
1824 | perf_evlist__set_event_name(session->evlist, evsel); | |
1825 | ||
1826 | free_event_desc(events); | |
1827 | ||
1828 | return 0; | |
1829 | } | |
1830 | ||
a1ae5655 | 1831 | static int process_cmdline(struct perf_file_section *section __maybe_unused, |
3d7eb86b NK |
1832 | struct perf_header *ph, int fd, |
1833 | void *data __maybe_unused) | |
a1ae5655 NK |
1834 | { |
1835 | size_t ret; | |
1836 | char *str; | |
1837 | u32 nr, i; | |
1838 | struct strbuf sb; | |
1839 | ||
5323f60c | 1840 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1841 | if (ret != sizeof(nr)) |
1842 | return -1; | |
1843 | ||
1844 | if (ph->needs_swap) | |
1845 | nr = bswap_32(nr); | |
1846 | ||
1847 | ph->env.nr_cmdline = nr; | |
1848 | strbuf_init(&sb, 128); | |
1849 | ||
1850 | for (i = 0; i < nr; i++) { | |
1851 | str = do_read_string(fd, ph); | |
1852 | if (!str) | |
1853 | goto error; | |
1854 | ||
1855 | /* include a NULL character at the end */ | |
1856 | strbuf_add(&sb, str, strlen(str) + 1); | |
1857 | free(str); | |
1858 | } | |
1859 | ph->env.cmdline = strbuf_detach(&sb, NULL); | |
1860 | return 0; | |
1861 | ||
1862 | error: | |
1863 | strbuf_release(&sb); | |
1864 | return -1; | |
1865 | } | |
1866 | ||
1867 | static int process_cpu_topology(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1868 | struct perf_header *ph, int fd, |
1869 | void *data __maybe_unused) | |
a1ae5655 NK |
1870 | { |
1871 | size_t ret; | |
1872 | u32 nr, i; | |
1873 | char *str; | |
1874 | struct strbuf sb; | |
1875 | ||
5323f60c | 1876 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1877 | if (ret != sizeof(nr)) |
1878 | return -1; | |
1879 | ||
1880 | if (ph->needs_swap) | |
1881 | nr = bswap_32(nr); | |
1882 | ||
1883 | ph->env.nr_sibling_cores = nr; | |
1884 | strbuf_init(&sb, 128); | |
1885 | ||
1886 | for (i = 0; i < nr; i++) { | |
1887 | str = do_read_string(fd, ph); | |
1888 | if (!str) | |
1889 | goto error; | |
1890 | ||
1891 | /* include a NULL character at the end */ | |
1892 | strbuf_add(&sb, str, strlen(str) + 1); | |
1893 | free(str); | |
1894 | } | |
1895 | ph->env.sibling_cores = strbuf_detach(&sb, NULL); | |
1896 | ||
5323f60c | 1897 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1898 | if (ret != sizeof(nr)) |
1899 | return -1; | |
1900 | ||
1901 | if (ph->needs_swap) | |
1902 | nr = bswap_32(nr); | |
1903 | ||
1904 | ph->env.nr_sibling_threads = nr; | |
1905 | ||
1906 | for (i = 0; i < nr; i++) { | |
1907 | str = do_read_string(fd, ph); | |
1908 | if (!str) | |
1909 | goto error; | |
1910 | ||
1911 | /* include a NULL character at the end */ | |
1912 | strbuf_add(&sb, str, strlen(str) + 1); | |
1913 | free(str); | |
1914 | } | |
1915 | ph->env.sibling_threads = strbuf_detach(&sb, NULL); | |
1916 | return 0; | |
1917 | ||
1918 | error: | |
1919 | strbuf_release(&sb); | |
1920 | return -1; | |
1921 | } | |
1922 | ||
1923 | static int process_numa_topology(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1924 | struct perf_header *ph, int fd, |
1925 | void *data __maybe_unused) | |
a1ae5655 NK |
1926 | { |
1927 | size_t ret; | |
1928 | u32 nr, node, i; | |
1929 | char *str; | |
1930 | uint64_t mem_total, mem_free; | |
1931 | struct strbuf sb; | |
1932 | ||
1933 | /* nr nodes */ | |
5323f60c | 1934 | ret = readn(fd, &nr, sizeof(nr)); |
a1ae5655 NK |
1935 | if (ret != sizeof(nr)) |
1936 | goto error; | |
1937 | ||
1938 | if (ph->needs_swap) | |
1939 | nr = bswap_32(nr); | |
1940 | ||
1941 | ph->env.nr_numa_nodes = nr; | |
1942 | strbuf_init(&sb, 256); | |
1943 | ||
1944 | for (i = 0; i < nr; i++) { | |
1945 | /* node number */ | |
5323f60c | 1946 | ret = readn(fd, &node, sizeof(node)); |
a1ae5655 NK |
1947 | if (ret != sizeof(node)) |
1948 | goto error; | |
1949 | ||
5323f60c | 1950 | ret = readn(fd, &mem_total, sizeof(u64)); |
a1ae5655 NK |
1951 | if (ret != sizeof(u64)) |
1952 | goto error; | |
1953 | ||
5323f60c | 1954 | ret = readn(fd, &mem_free, sizeof(u64)); |
a1ae5655 NK |
1955 | if (ret != sizeof(u64)) |
1956 | goto error; | |
1957 | ||
1958 | if (ph->needs_swap) { | |
1959 | node = bswap_32(node); | |
1960 | mem_total = bswap_64(mem_total); | |
1961 | mem_free = bswap_64(mem_free); | |
1962 | } | |
1963 | ||
1964 | strbuf_addf(&sb, "%u:%"PRIu64":%"PRIu64":", | |
1965 | node, mem_total, mem_free); | |
1966 | ||
1967 | str = do_read_string(fd, ph); | |
1968 | if (!str) | |
1969 | goto error; | |
1970 | ||
1971 | /* include a NULL character at the end */ | |
1972 | strbuf_add(&sb, str, strlen(str) + 1); | |
1973 | free(str); | |
1974 | } | |
1975 | ph->env.numa_nodes = strbuf_detach(&sb, NULL); | |
1976 | return 0; | |
1977 | ||
1978 | error: | |
1979 | strbuf_release(&sb); | |
1980 | return -1; | |
1981 | } | |
1982 | ||
1983 | static int process_pmu_mappings(struct perf_file_section *section __maybe_unused, | |
3d7eb86b NK |
1984 | struct perf_header *ph, int fd, |
1985 | void *data __maybe_unused) | |
a1ae5655 NK |
1986 | { |
1987 | size_t ret; | |
1988 | char *name; | |
1989 | u32 pmu_num; | |
1990 | u32 type; | |
1991 | struct strbuf sb; | |
1992 | ||
5323f60c | 1993 | ret = readn(fd, &pmu_num, sizeof(pmu_num)); |
a1ae5655 NK |
1994 | if (ret != sizeof(pmu_num)) |
1995 | return -1; | |
1996 | ||
1997 | if (ph->needs_swap) | |
1998 | pmu_num = bswap_32(pmu_num); | |
1999 | ||
2000 | if (!pmu_num) { | |
2001 | pr_debug("pmu mappings not available\n"); | |
2002 | return 0; | |
2003 | } | |
2004 | ||
2005 | ph->env.nr_pmu_mappings = pmu_num; | |
2006 | strbuf_init(&sb, 128); | |
2007 | ||
2008 | while (pmu_num) { | |
5323f60c | 2009 | if (readn(fd, &type, sizeof(type)) != sizeof(type)) |
a1ae5655 NK |
2010 | goto error; |
2011 | if (ph->needs_swap) | |
2012 | type = bswap_32(type); | |
2013 | ||
2014 | name = do_read_string(fd, ph); | |
2015 | if (!name) | |
2016 | goto error; | |
2017 | ||
2018 | strbuf_addf(&sb, "%u:%s", type, name); | |
2019 | /* include a NULL character at the end */ | |
2020 | strbuf_add(&sb, "", 1); | |
2021 | ||
2022 | free(name); | |
2023 | pmu_num--; | |
2024 | } | |
2025 | ph->env.pmu_mappings = strbuf_detach(&sb, NULL); | |
2026 | return 0; | |
2027 | ||
2028 | error: | |
2029 | strbuf_release(&sb); | |
2030 | return -1; | |
2031 | } | |
2032 | ||
a8bb559b NK |
2033 | static int process_group_desc(struct perf_file_section *section __maybe_unused, |
2034 | struct perf_header *ph, int fd, | |
2035 | void *data __maybe_unused) | |
2036 | { | |
2037 | size_t ret = -1; | |
2038 | u32 i, nr, nr_groups; | |
2039 | struct perf_session *session; | |
2040 | struct perf_evsel *evsel, *leader = NULL; | |
2041 | struct group_desc { | |
2042 | char *name; | |
2043 | u32 leader_idx; | |
2044 | u32 nr_members; | |
2045 | } *desc; | |
2046 | ||
2047 | if (readn(fd, &nr_groups, sizeof(nr_groups)) != sizeof(nr_groups)) | |
2048 | return -1; | |
2049 | ||
2050 | if (ph->needs_swap) | |
2051 | nr_groups = bswap_32(nr_groups); | |
2052 | ||
2053 | ph->env.nr_groups = nr_groups; | |
2054 | if (!nr_groups) { | |
2055 | pr_debug("group desc not available\n"); | |
2056 | return 0; | |
2057 | } | |
2058 | ||
2059 | desc = calloc(nr_groups, sizeof(*desc)); | |
2060 | if (!desc) | |
2061 | return -1; | |
2062 | ||
2063 | for (i = 0; i < nr_groups; i++) { | |
2064 | desc[i].name = do_read_string(fd, ph); | |
2065 | if (!desc[i].name) | |
2066 | goto out_free; | |
2067 | ||
2068 | if (readn(fd, &desc[i].leader_idx, sizeof(u32)) != sizeof(u32)) | |
2069 | goto out_free; | |
2070 | ||
2071 | if (readn(fd, &desc[i].nr_members, sizeof(u32)) != sizeof(u32)) | |
2072 | goto out_free; | |
2073 | ||
2074 | if (ph->needs_swap) { | |
2075 | desc[i].leader_idx = bswap_32(desc[i].leader_idx); | |
2076 | desc[i].nr_members = bswap_32(desc[i].nr_members); | |
2077 | } | |
2078 | } | |
2079 | ||
2080 | /* | |
2081 | * Rebuild group relationship based on the group_desc | |
2082 | */ | |
2083 | session = container_of(ph, struct perf_session, header); | |
2084 | session->evlist->nr_groups = nr_groups; | |
2085 | ||
2086 | i = nr = 0; | |
2087 | list_for_each_entry(evsel, &session->evlist->entries, node) { | |
2088 | if (evsel->idx == (int) desc[i].leader_idx) { | |
2089 | evsel->leader = evsel; | |
2090 | /* {anon_group} is a dummy name */ | |
2091 | if (strcmp(desc[i].name, "{anon_group}")) | |
2092 | evsel->group_name = desc[i].name; | |
2093 | evsel->nr_members = desc[i].nr_members; | |
2094 | ||
2095 | if (i >= nr_groups || nr > 0) { | |
2096 | pr_debug("invalid group desc\n"); | |
2097 | goto out_free; | |
2098 | } | |
2099 | ||
2100 | leader = evsel; | |
2101 | nr = evsel->nr_members - 1; | |
2102 | i++; | |
2103 | } else if (nr) { | |
2104 | /* This is a group member */ | |
2105 | evsel->leader = leader; | |
2106 | ||
2107 | nr--; | |
2108 | } | |
2109 | } | |
2110 | ||
2111 | if (i != nr_groups || nr != 0) { | |
2112 | pr_debug("invalid group desc\n"); | |
2113 | goto out_free; | |
2114 | } | |
2115 | ||
2116 | ret = 0; | |
2117 | out_free: | |
2118 | while ((int) --i >= 0) | |
2119 | free(desc[i].name); | |
2120 | free(desc); | |
2121 | ||
2122 | return ret; | |
2123 | } | |
2124 | ||
fbe96f29 SE |
2125 | struct feature_ops { |
2126 | int (*write)(int fd, struct perf_header *h, struct perf_evlist *evlist); | |
2127 | void (*print)(struct perf_header *h, int fd, FILE *fp); | |
f1c67db7 | 2128 | int (*process)(struct perf_file_section *section, |
3d7eb86b | 2129 | struct perf_header *h, int fd, void *data); |
fbe96f29 SE |
2130 | const char *name; |
2131 | bool full_only; | |
2132 | }; | |
2133 | ||
8cdfa78a RR |
2134 | #define FEAT_OPA(n, func) \ |
2135 | [n] = { .name = #n, .write = write_##func, .print = print_##func } | |
f1c67db7 RR |
2136 | #define FEAT_OPP(n, func) \ |
2137 | [n] = { .name = #n, .write = write_##func, .print = print_##func, \ | |
2138 | .process = process_##func } | |
8cdfa78a | 2139 | #define FEAT_OPF(n, func) \ |
f1c67db7 | 2140 | [n] = { .name = #n, .write = write_##func, .print = print_##func, \ |
a1ae5655 | 2141 | .process = process_##func, .full_only = true } |
8cdfa78a RR |
2142 | |
2143 | /* feature_ops not implemented: */ | |
2eeaaa09 SE |
2144 | #define print_tracing_data NULL |
2145 | #define print_build_id NULL | |
fbe96f29 SE |
2146 | |
2147 | static const struct feature_ops feat_ops[HEADER_LAST_FEATURE] = { | |
2eeaaa09 | 2148 | FEAT_OPP(HEADER_TRACING_DATA, tracing_data), |
f1c67db7 | 2149 | FEAT_OPP(HEADER_BUILD_ID, build_id), |
a1ae5655 NK |
2150 | FEAT_OPP(HEADER_HOSTNAME, hostname), |
2151 | FEAT_OPP(HEADER_OSRELEASE, osrelease), | |
2152 | FEAT_OPP(HEADER_VERSION, version), | |
2153 | FEAT_OPP(HEADER_ARCH, arch), | |
2154 | FEAT_OPP(HEADER_NRCPUS, nrcpus), | |
2155 | FEAT_OPP(HEADER_CPUDESC, cpudesc), | |
37e9d750 | 2156 | FEAT_OPP(HEADER_CPUID, cpuid), |
a1ae5655 | 2157 | FEAT_OPP(HEADER_TOTAL_MEM, total_mem), |
7c2f7afd | 2158 | FEAT_OPP(HEADER_EVENT_DESC, event_desc), |
a1ae5655 | 2159 | FEAT_OPP(HEADER_CMDLINE, cmdline), |
8cdfa78a RR |
2160 | FEAT_OPF(HEADER_CPU_TOPOLOGY, cpu_topology), |
2161 | FEAT_OPF(HEADER_NUMA_TOPOLOGY, numa_topology), | |
330aa675 | 2162 | FEAT_OPA(HEADER_BRANCH_STACK, branch_stack), |
a1ae5655 | 2163 | FEAT_OPP(HEADER_PMU_MAPPINGS, pmu_mappings), |
a8bb559b | 2164 | FEAT_OPP(HEADER_GROUP_DESC, group_desc), |
fbe96f29 SE |
2165 | }; |
2166 | ||
2167 | struct header_print_data { | |
2168 | FILE *fp; | |
2169 | bool full; /* extended list of headers */ | |
2170 | }; | |
2171 | ||
2172 | static int perf_file_section__fprintf_info(struct perf_file_section *section, | |
2173 | struct perf_header *ph, | |
2174 | int feat, int fd, void *data) | |
2175 | { | |
2176 | struct header_print_data *hd = data; | |
2177 | ||
2178 | if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) { | |
2179 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " | |
2180 | "%d, continuing...\n", section->offset, feat); | |
2181 | return 0; | |
2182 | } | |
b1e5a9be | 2183 | if (feat >= HEADER_LAST_FEATURE) { |
fbe96f29 | 2184 | pr_warning("unknown feature %d\n", feat); |
f7a8a133 | 2185 | return 0; |
fbe96f29 SE |
2186 | } |
2187 | if (!feat_ops[feat].print) | |
2188 | return 0; | |
2189 | ||
2190 | if (!feat_ops[feat].full_only || hd->full) | |
2191 | feat_ops[feat].print(ph, fd, hd->fp); | |
2192 | else | |
2193 | fprintf(hd->fp, "# %s info available, use -I to display\n", | |
2194 | feat_ops[feat].name); | |
2195 | ||
2196 | return 0; | |
2197 | } | |
2198 | ||
2199 | int perf_header__fprintf_info(struct perf_session *session, FILE *fp, bool full) | |
2200 | { | |
2201 | struct header_print_data hd; | |
2202 | struct perf_header *header = &session->header; | |
2203 | int fd = session->fd; | |
2204 | hd.fp = fp; | |
2205 | hd.full = full; | |
2206 | ||
2207 | perf_header__process_sections(header, fd, &hd, | |
2208 | perf_file_section__fprintf_info); | |
2209 | return 0; | |
2210 | } | |
2211 | ||
fbe96f29 SE |
2212 | static int do_write_feat(int fd, struct perf_header *h, int type, |
2213 | struct perf_file_section **p, | |
2214 | struct perf_evlist *evlist) | |
2215 | { | |
2216 | int err; | |
2217 | int ret = 0; | |
2218 | ||
2219 | if (perf_header__has_feat(h, type)) { | |
b1e5a9be RR |
2220 | if (!feat_ops[type].write) |
2221 | return -1; | |
fbe96f29 SE |
2222 | |
2223 | (*p)->offset = lseek(fd, 0, SEEK_CUR); | |
2224 | ||
2225 | err = feat_ops[type].write(fd, h, evlist); | |
2226 | if (err < 0) { | |
2227 | pr_debug("failed to write feature %d\n", type); | |
2228 | ||
2229 | /* undo anything written */ | |
2230 | lseek(fd, (*p)->offset, SEEK_SET); | |
2231 | ||
2232 | return -1; | |
2233 | } | |
2234 | (*p)->size = lseek(fd, 0, SEEK_CUR) - (*p)->offset; | |
2235 | (*p)++; | |
2236 | } | |
2237 | return ret; | |
2238 | } | |
2239 | ||
1c0b04d1 | 2240 | static int perf_header__adds_write(struct perf_header *header, |
361c99a6 | 2241 | struct perf_evlist *evlist, int fd) |
2ba08250 | 2242 | { |
9e827dd0 | 2243 | int nr_sections; |
fbe96f29 | 2244 | struct perf_file_section *feat_sec, *p; |
9e827dd0 FW |
2245 | int sec_size; |
2246 | u64 sec_start; | |
b1e5a9be | 2247 | int feat; |
fbe96f29 | 2248 | int err; |
9e827dd0 | 2249 | |
1c0b04d1 | 2250 | nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS); |
9e827dd0 | 2251 | if (!nr_sections) |
d5eed904 | 2252 | return 0; |
9e827dd0 | 2253 | |
91b98804 | 2254 | feat_sec = p = calloc(nr_sections, sizeof(*feat_sec)); |
d5eed904 ACM |
2255 | if (feat_sec == NULL) |
2256 | return -ENOMEM; | |
9e827dd0 FW |
2257 | |
2258 | sec_size = sizeof(*feat_sec) * nr_sections; | |
2259 | ||
1c0b04d1 | 2260 | sec_start = header->data_offset + header->data_size; |
f887f301 | 2261 | lseek(fd, sec_start + sec_size, SEEK_SET); |
2ba08250 | 2262 | |
b1e5a9be RR |
2263 | for_each_set_bit(feat, header->adds_features, HEADER_FEAT_BITS) { |
2264 | if (do_write_feat(fd, header, feat, &p, evlist)) | |
2265 | perf_header__clear_feat(header, feat); | |
2266 | } | |
9e827dd0 | 2267 | |
f887f301 | 2268 | lseek(fd, sec_start, SEEK_SET); |
fbe96f29 SE |
2269 | /* |
2270 | * may write more than needed due to dropped feature, but | |
2271 | * this is okay, reader will skip the mising entries | |
2272 | */ | |
d5eed904 ACM |
2273 | err = do_write(fd, feat_sec, sec_size); |
2274 | if (err < 0) | |
2275 | pr_debug("failed to write feature section\n"); | |
9e827dd0 | 2276 | free(feat_sec); |
d5eed904 | 2277 | return err; |
9e827dd0 | 2278 | } |
2ba08250 | 2279 | |
8dc58101 TZ |
2280 | int perf_header__write_pipe(int fd) |
2281 | { | |
2282 | struct perf_pipe_file_header f_header; | |
2283 | int err; | |
2284 | ||
2285 | f_header = (struct perf_pipe_file_header){ | |
2286 | .magic = PERF_MAGIC, | |
2287 | .size = sizeof(f_header), | |
2288 | }; | |
2289 | ||
2290 | err = do_write(fd, &f_header, sizeof(f_header)); | |
2291 | if (err < 0) { | |
2292 | pr_debug("failed to write perf pipe header\n"); | |
2293 | return err; | |
2294 | } | |
2295 | ||
2296 | return 0; | |
2297 | } | |
2298 | ||
a91e5431 ACM |
2299 | int perf_session__write_header(struct perf_session *session, |
2300 | struct perf_evlist *evlist, | |
2301 | int fd, bool at_exit) | |
7c6a1c65 PZ |
2302 | { |
2303 | struct perf_file_header f_header; | |
2304 | struct perf_file_attr f_attr; | |
1c0b04d1 | 2305 | struct perf_header *header = &session->header; |
6606f873 | 2306 | struct perf_evsel *evsel, *pair = NULL; |
a91e5431 | 2307 | int err; |
7c6a1c65 PZ |
2308 | |
2309 | lseek(fd, sizeof(f_header), SEEK_SET); | |
2310 | ||
a91e5431 | 2311 | if (session->evlist != evlist) |
0c21f736 | 2312 | pair = perf_evlist__first(session->evlist); |
7c6a1c65 | 2313 | |
6606f873 RR |
2314 | list_for_each_entry(evsel, &evlist->entries, node) { |
2315 | evsel->id_offset = lseek(fd, 0, SEEK_CUR); | |
2316 | err = do_write(fd, evsel->id, evsel->ids * sizeof(u64)); | |
d5eed904 | 2317 | if (err < 0) { |
a91e5431 | 2318 | out_err_write: |
d5eed904 ACM |
2319 | pr_debug("failed to write perf header\n"); |
2320 | return err; | |
2321 | } | |
a91e5431 ACM |
2322 | if (session->evlist != evlist) { |
2323 | err = do_write(fd, pair->id, pair->ids * sizeof(u64)); | |
2324 | if (err < 0) | |
2325 | goto out_err_write; | |
6606f873 | 2326 | evsel->ids += pair->ids; |
0c21f736 | 2327 | pair = perf_evsel__next(pair); |
a91e5431 | 2328 | } |
7c6a1c65 PZ |
2329 | } |
2330 | ||
1c0b04d1 | 2331 | header->attr_offset = lseek(fd, 0, SEEK_CUR); |
7c6a1c65 | 2332 | |
6606f873 | 2333 | list_for_each_entry(evsel, &evlist->entries, node) { |
7c6a1c65 | 2334 | f_attr = (struct perf_file_attr){ |
6606f873 | 2335 | .attr = evsel->attr, |
7c6a1c65 | 2336 | .ids = { |
6606f873 RR |
2337 | .offset = evsel->id_offset, |
2338 | .size = evsel->ids * sizeof(u64), | |
7c6a1c65 PZ |
2339 | } |
2340 | }; | |
d5eed904 ACM |
2341 | err = do_write(fd, &f_attr, sizeof(f_attr)); |
2342 | if (err < 0) { | |
2343 | pr_debug("failed to write perf header attribute\n"); | |
2344 | return err; | |
2345 | } | |
7c6a1c65 PZ |
2346 | } |
2347 | ||
1c0b04d1 | 2348 | header->event_offset = lseek(fd, 0, SEEK_CUR); |
db146f06 RR |
2349 | header->event_size = trace_event_count * sizeof(struct perf_trace_event_type); |
2350 | if (trace_events) { | |
2351 | err = do_write(fd, trace_events, header->event_size); | |
d5eed904 ACM |
2352 | if (err < 0) { |
2353 | pr_debug("failed to write perf header events\n"); | |
2354 | return err; | |
2355 | } | |
2356 | } | |
8755a8f2 | 2357 | |
1c0b04d1 | 2358 | header->data_offset = lseek(fd, 0, SEEK_CUR); |
7c6a1c65 | 2359 | |
d5eed904 | 2360 | if (at_exit) { |
1c0b04d1 | 2361 | err = perf_header__adds_write(header, evlist, fd); |
d5eed904 ACM |
2362 | if (err < 0) |
2363 | return err; | |
2364 | } | |
9e827dd0 | 2365 | |
7c6a1c65 PZ |
2366 | f_header = (struct perf_file_header){ |
2367 | .magic = PERF_MAGIC, | |
2368 | .size = sizeof(f_header), | |
2369 | .attr_size = sizeof(f_attr), | |
2370 | .attrs = { | |
1c0b04d1 | 2371 | .offset = header->attr_offset, |
a91e5431 | 2372 | .size = evlist->nr_entries * sizeof(f_attr), |
7c6a1c65 PZ |
2373 | }, |
2374 | .data = { | |
1c0b04d1 ACM |
2375 | .offset = header->data_offset, |
2376 | .size = header->data_size, | |
7c6a1c65 | 2377 | }, |
8755a8f2 | 2378 | .event_types = { |
1c0b04d1 ACM |
2379 | .offset = header->event_offset, |
2380 | .size = header->event_size, | |
8755a8f2 | 2381 | }, |
7c6a1c65 PZ |
2382 | }; |
2383 | ||
1c0b04d1 | 2384 | memcpy(&f_header.adds_features, &header->adds_features, sizeof(header->adds_features)); |
2ba08250 | 2385 | |
7c6a1c65 | 2386 | lseek(fd, 0, SEEK_SET); |
d5eed904 ACM |
2387 | err = do_write(fd, &f_header, sizeof(f_header)); |
2388 | if (err < 0) { | |
2389 | pr_debug("failed to write perf header\n"); | |
2390 | return err; | |
2391 | } | |
1c0b04d1 | 2392 | lseek(fd, header->data_offset + header->data_size, SEEK_SET); |
7c6a1c65 | 2393 | |
1c0b04d1 | 2394 | header->frozen = 1; |
d5eed904 | 2395 | return 0; |
7c6a1c65 PZ |
2396 | } |
2397 | ||
1c0b04d1 | 2398 | static int perf_header__getbuffer64(struct perf_header *header, |
ba21594c ACM |
2399 | int fd, void *buf, size_t size) |
2400 | { | |
1e7972cc | 2401 | if (readn(fd, buf, size) <= 0) |
ba21594c ACM |
2402 | return -1; |
2403 | ||
1c0b04d1 | 2404 | if (header->needs_swap) |
ba21594c ACM |
2405 | mem_bswap_64(buf, size); |
2406 | ||
2407 | return 0; | |
2408 | } | |
2409 | ||
1c0b04d1 | 2410 | int perf_header__process_sections(struct perf_header *header, int fd, |
fbe96f29 | 2411 | void *data, |
1c0b04d1 | 2412 | int (*process)(struct perf_file_section *section, |
b1e5a9be RR |
2413 | struct perf_header *ph, |
2414 | int feat, int fd, void *data)) | |
2ba08250 | 2415 | { |
b1e5a9be | 2416 | struct perf_file_section *feat_sec, *sec; |
9e827dd0 FW |
2417 | int nr_sections; |
2418 | int sec_size; | |
b1e5a9be RR |
2419 | int feat; |
2420 | int err; | |
9e827dd0 | 2421 | |
1c0b04d1 | 2422 | nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS); |
9e827dd0 | 2423 | if (!nr_sections) |
37562eac | 2424 | return 0; |
9e827dd0 | 2425 | |
91b98804 | 2426 | feat_sec = sec = calloc(nr_sections, sizeof(*feat_sec)); |
9e827dd0 | 2427 | if (!feat_sec) |
37562eac | 2428 | return -1; |
9e827dd0 FW |
2429 | |
2430 | sec_size = sizeof(*feat_sec) * nr_sections; | |
2431 | ||
1c0b04d1 | 2432 | lseek(fd, header->data_offset + header->data_size, SEEK_SET); |
9e827dd0 | 2433 | |
b1e5a9be RR |
2434 | err = perf_header__getbuffer64(header, fd, feat_sec, sec_size); |
2435 | if (err < 0) | |
769885f3 | 2436 | goto out_free; |
9e827dd0 | 2437 | |
b1e5a9be RR |
2438 | for_each_set_bit(feat, header->adds_features, HEADER_LAST_FEATURE) { |
2439 | err = process(sec++, header, feat, fd, data); | |
2440 | if (err < 0) | |
2441 | goto out_free; | |
2ba08250 | 2442 | } |
b1e5a9be | 2443 | err = 0; |
769885f3 | 2444 | out_free: |
37562eac ACM |
2445 | free(feat_sec); |
2446 | return err; | |
769885f3 | 2447 | } |
4778d2e4 | 2448 | |
114382a0 SE |
2449 | static const int attr_file_abi_sizes[] = { |
2450 | [0] = PERF_ATTR_SIZE_VER0, | |
2451 | [1] = PERF_ATTR_SIZE_VER1, | |
239cc478 | 2452 | [2] = PERF_ATTR_SIZE_VER2, |
0f6a3015 | 2453 | [3] = PERF_ATTR_SIZE_VER3, |
114382a0 SE |
2454 | 0, |
2455 | }; | |
2456 | ||
2457 | /* | |
2458 | * In the legacy file format, the magic number is not used to encode endianness. | |
2459 | * hdr_sz was used to encode endianness. But given that hdr_sz can vary based | |
2460 | * on ABI revisions, we need to try all combinations for all endianness to | |
2461 | * detect the endianness. | |
2462 | */ | |
2463 | static int try_all_file_abis(uint64_t hdr_sz, struct perf_header *ph) | |
73323f54 | 2464 | { |
114382a0 SE |
2465 | uint64_t ref_size, attr_size; |
2466 | int i; | |
73323f54 | 2467 | |
114382a0 SE |
2468 | for (i = 0 ; attr_file_abi_sizes[i]; i++) { |
2469 | ref_size = attr_file_abi_sizes[i] | |
2470 | + sizeof(struct perf_file_section); | |
2471 | if (hdr_sz != ref_size) { | |
2472 | attr_size = bswap_64(hdr_sz); | |
2473 | if (attr_size != ref_size) | |
2474 | continue; | |
73323f54 | 2475 | |
114382a0 SE |
2476 | ph->needs_swap = true; |
2477 | } | |
2478 | pr_debug("ABI%d perf.data file detected, need_swap=%d\n", | |
2479 | i, | |
2480 | ph->needs_swap); | |
2481 | return 0; | |
2482 | } | |
2483 | /* could not determine endianness */ | |
2484 | return -1; | |
2485 | } | |
73323f54 | 2486 | |
114382a0 SE |
2487 | #define PERF_PIPE_HDR_VER0 16 |
2488 | ||
2489 | static const size_t attr_pipe_abi_sizes[] = { | |
2490 | [0] = PERF_PIPE_HDR_VER0, | |
2491 | 0, | |
2492 | }; | |
2493 | ||
2494 | /* | |
2495 | * In the legacy pipe format, there is an implicit assumption that endiannesss | |
2496 | * between host recording the samples, and host parsing the samples is the | |
2497 | * same. This is not always the case given that the pipe output may always be | |
2498 | * redirected into a file and analyzed on a different machine with possibly a | |
2499 | * different endianness and perf_event ABI revsions in the perf tool itself. | |
2500 | */ | |
2501 | static int try_all_pipe_abis(uint64_t hdr_sz, struct perf_header *ph) | |
2502 | { | |
2503 | u64 attr_size; | |
2504 | int i; | |
2505 | ||
2506 | for (i = 0 ; attr_pipe_abi_sizes[i]; i++) { | |
2507 | if (hdr_sz != attr_pipe_abi_sizes[i]) { | |
2508 | attr_size = bswap_64(hdr_sz); | |
2509 | if (attr_size != hdr_sz) | |
2510 | continue; | |
73323f54 SE |
2511 | |
2512 | ph->needs_swap = true; | |
2513 | } | |
114382a0 | 2514 | pr_debug("Pipe ABI%d perf.data file detected\n", i); |
73323f54 SE |
2515 | return 0; |
2516 | } | |
114382a0 SE |
2517 | return -1; |
2518 | } | |
2519 | ||
e84ba4e2 FT |
2520 | bool is_perf_magic(u64 magic) |
2521 | { | |
2522 | if (!memcmp(&magic, __perf_magic1, sizeof(magic)) | |
2523 | || magic == __perf_magic2 | |
2524 | || magic == __perf_magic2_sw) | |
2525 | return true; | |
2526 | ||
2527 | return false; | |
2528 | } | |
2529 | ||
114382a0 SE |
2530 | static int check_magic_endian(u64 magic, uint64_t hdr_sz, |
2531 | bool is_pipe, struct perf_header *ph) | |
2532 | { | |
2533 | int ret; | |
2534 | ||
2535 | /* check for legacy format */ | |
2536 | ret = memcmp(&magic, __perf_magic1, sizeof(magic)); | |
2537 | if (ret == 0) { | |
2538 | pr_debug("legacy perf.data format\n"); | |
2539 | if (is_pipe) | |
2540 | return try_all_pipe_abis(hdr_sz, ph); | |
2541 | ||
2542 | return try_all_file_abis(hdr_sz, ph); | |
2543 | } | |
2544 | /* | |
2545 | * the new magic number serves two purposes: | |
2546 | * - unique number to identify actual perf.data files | |
2547 | * - encode endianness of file | |
2548 | */ | |
73323f54 | 2549 | |
114382a0 SE |
2550 | /* check magic number with one endianness */ |
2551 | if (magic == __perf_magic2) | |
73323f54 SE |
2552 | return 0; |
2553 | ||
114382a0 SE |
2554 | /* check magic number with opposite endianness */ |
2555 | if (magic != __perf_magic2_sw) | |
73323f54 SE |
2556 | return -1; |
2557 | ||
2558 | ph->needs_swap = true; | |
2559 | ||
2560 | return 0; | |
2561 | } | |
2562 | ||
1c0b04d1 | 2563 | int perf_file_header__read(struct perf_file_header *header, |
37562eac ACM |
2564 | struct perf_header *ph, int fd) |
2565 | { | |
73323f54 SE |
2566 | int ret; |
2567 | ||
37562eac | 2568 | lseek(fd, 0, SEEK_SET); |
37562eac | 2569 | |
73323f54 SE |
2570 | ret = readn(fd, header, sizeof(*header)); |
2571 | if (ret <= 0) | |
37562eac ACM |
2572 | return -1; |
2573 | ||
114382a0 SE |
2574 | if (check_magic_endian(header->magic, |
2575 | header->attr_size, false, ph) < 0) { | |
2576 | pr_debug("magic/endian check failed\n"); | |
73323f54 | 2577 | return -1; |
114382a0 | 2578 | } |
ba21594c | 2579 | |
73323f54 | 2580 | if (ph->needs_swap) { |
1c0b04d1 | 2581 | mem_bswap_64(header, offsetof(struct perf_file_header, |
73323f54 | 2582 | adds_features)); |
ba21594c ACM |
2583 | } |
2584 | ||
1c0b04d1 | 2585 | if (header->size != sizeof(*header)) { |
37562eac | 2586 | /* Support the previous format */ |
1c0b04d1 ACM |
2587 | if (header->size == offsetof(typeof(*header), adds_features)) |
2588 | bitmap_zero(header->adds_features, HEADER_FEAT_BITS); | |
37562eac ACM |
2589 | else |
2590 | return -1; | |
d327fa43 | 2591 | } else if (ph->needs_swap) { |
d327fa43 DA |
2592 | /* |
2593 | * feature bitmap is declared as an array of unsigned longs -- | |
2594 | * not good since its size can differ between the host that | |
2595 | * generated the data file and the host analyzing the file. | |
2596 | * | |
2597 | * We need to handle endianness, but we don't know the size of | |
2598 | * the unsigned long where the file was generated. Take a best | |
2599 | * guess at determining it: try 64-bit swap first (ie., file | |
2600 | * created on a 64-bit host), and check if the hostname feature | |
2601 | * bit is set (this feature bit is forced on as of fbe96f2). | |
2602 | * If the bit is not, undo the 64-bit swap and try a 32-bit | |
2603 | * swap. If the hostname bit is still not set (e.g., older data | |
2604 | * file), punt and fallback to the original behavior -- | |
2605 | * clearing all feature bits and setting buildid. | |
2606 | */ | |
80c0120a DA |
2607 | mem_bswap_64(&header->adds_features, |
2608 | BITS_TO_U64(HEADER_FEAT_BITS)); | |
d327fa43 DA |
2609 | |
2610 | if (!test_bit(HEADER_HOSTNAME, header->adds_features)) { | |
80c0120a DA |
2611 | /* unswap as u64 */ |
2612 | mem_bswap_64(&header->adds_features, | |
2613 | BITS_TO_U64(HEADER_FEAT_BITS)); | |
2614 | ||
2615 | /* unswap as u32 */ | |
2616 | mem_bswap_32(&header->adds_features, | |
2617 | BITS_TO_U32(HEADER_FEAT_BITS)); | |
d327fa43 DA |
2618 | } |
2619 | ||
2620 | if (!test_bit(HEADER_HOSTNAME, header->adds_features)) { | |
2621 | bitmap_zero(header->adds_features, HEADER_FEAT_BITS); | |
2622 | set_bit(HEADER_BUILD_ID, header->adds_features); | |
2623 | } | |
4778d2e4 | 2624 | } |
9e827dd0 | 2625 | |
1c0b04d1 | 2626 | memcpy(&ph->adds_features, &header->adds_features, |
ba21594c | 2627 | sizeof(ph->adds_features)); |
37562eac | 2628 | |
1c0b04d1 ACM |
2629 | ph->event_offset = header->event_types.offset; |
2630 | ph->event_size = header->event_types.size; | |
2631 | ph->data_offset = header->data.offset; | |
2632 | ph->data_size = header->data.size; | |
37562eac ACM |
2633 | return 0; |
2634 | } | |
2635 | ||
1c0b04d1 | 2636 | static int perf_file_section__process(struct perf_file_section *section, |
ba21594c | 2637 | struct perf_header *ph, |
da378962 | 2638 | int feat, int fd, void *data) |
37562eac | 2639 | { |
1c0b04d1 | 2640 | if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) { |
9486aa38 | 2641 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " |
1c0b04d1 | 2642 | "%d, continuing...\n", section->offset, feat); |
37562eac ACM |
2643 | return 0; |
2644 | } | |
2645 | ||
b1e5a9be RR |
2646 | if (feat >= HEADER_LAST_FEATURE) { |
2647 | pr_debug("unknown feature %d, continuing...\n", feat); | |
2648 | return 0; | |
2649 | } | |
2650 | ||
f1c67db7 RR |
2651 | if (!feat_ops[feat].process) |
2652 | return 0; | |
37562eac | 2653 | |
3d7eb86b | 2654 | return feat_ops[feat].process(section, ph, fd, data); |
37562eac | 2655 | } |
2ba08250 | 2656 | |
1c0b04d1 | 2657 | static int perf_file_header__read_pipe(struct perf_pipe_file_header *header, |
454c407e TZ |
2658 | struct perf_header *ph, int fd, |
2659 | bool repipe) | |
7c6a1c65 | 2660 | { |
73323f54 SE |
2661 | int ret; |
2662 | ||
2663 | ret = readn(fd, header, sizeof(*header)); | |
2664 | if (ret <= 0) | |
2665 | return -1; | |
2666 | ||
114382a0 SE |
2667 | if (check_magic_endian(header->magic, header->size, true, ph) < 0) { |
2668 | pr_debug("endian/magic failed\n"); | |
8dc58101 | 2669 | return -1; |
114382a0 SE |
2670 | } |
2671 | ||
2672 | if (ph->needs_swap) | |
2673 | header->size = bswap_64(header->size); | |
8dc58101 | 2674 | |
1c0b04d1 | 2675 | if (repipe && do_write(STDOUT_FILENO, header, sizeof(*header)) < 0) |
454c407e TZ |
2676 | return -1; |
2677 | ||
8dc58101 TZ |
2678 | return 0; |
2679 | } | |
2680 | ||
2681 | static int perf_header__read_pipe(struct perf_session *session, int fd) | |
2682 | { | |
1c0b04d1 | 2683 | struct perf_header *header = &session->header; |
8dc58101 TZ |
2684 | struct perf_pipe_file_header f_header; |
2685 | ||
1c0b04d1 | 2686 | if (perf_file_header__read_pipe(&f_header, header, fd, |
454c407e | 2687 | session->repipe) < 0) { |
8dc58101 TZ |
2688 | pr_debug("incompatible file format\n"); |
2689 | return -EINVAL; | |
2690 | } | |
2691 | ||
2692 | session->fd = fd; | |
2693 | ||
2694 | return 0; | |
2695 | } | |
2696 | ||
69996df4 SE |
2697 | static int read_attr(int fd, struct perf_header *ph, |
2698 | struct perf_file_attr *f_attr) | |
2699 | { | |
2700 | struct perf_event_attr *attr = &f_attr->attr; | |
2701 | size_t sz, left; | |
2702 | size_t our_sz = sizeof(f_attr->attr); | |
2703 | int ret; | |
2704 | ||
2705 | memset(f_attr, 0, sizeof(*f_attr)); | |
2706 | ||
2707 | /* read minimal guaranteed structure */ | |
2708 | ret = readn(fd, attr, PERF_ATTR_SIZE_VER0); | |
2709 | if (ret <= 0) { | |
2710 | pr_debug("cannot read %d bytes of header attr\n", | |
2711 | PERF_ATTR_SIZE_VER0); | |
2712 | return -1; | |
2713 | } | |
2714 | ||
2715 | /* on file perf_event_attr size */ | |
2716 | sz = attr->size; | |
114382a0 | 2717 | |
69996df4 SE |
2718 | if (ph->needs_swap) |
2719 | sz = bswap_32(sz); | |
2720 | ||
2721 | if (sz == 0) { | |
2722 | /* assume ABI0 */ | |
2723 | sz = PERF_ATTR_SIZE_VER0; | |
2724 | } else if (sz > our_sz) { | |
2725 | pr_debug("file uses a more recent and unsupported ABI" | |
2726 | " (%zu bytes extra)\n", sz - our_sz); | |
2727 | return -1; | |
2728 | } | |
2729 | /* what we have not yet read and that we know about */ | |
2730 | left = sz - PERF_ATTR_SIZE_VER0; | |
2731 | if (left) { | |
2732 | void *ptr = attr; | |
2733 | ptr += PERF_ATTR_SIZE_VER0; | |
2734 | ||
2735 | ret = readn(fd, ptr, left); | |
2736 | } | |
2737 | /* read perf_file_section, ids are read in caller */ | |
2738 | ret = readn(fd, &f_attr->ids, sizeof(f_attr->ids)); | |
2739 | ||
2740 | return ret <= 0 ? -1 : 0; | |
2741 | } | |
2742 | ||
831394bd NK |
2743 | static int perf_evsel__prepare_tracepoint_event(struct perf_evsel *evsel, |
2744 | struct pevent *pevent) | |
cb9dd49e | 2745 | { |
831394bd | 2746 | struct event_format *event; |
cb9dd49e ACM |
2747 | char bf[128]; |
2748 | ||
831394bd NK |
2749 | /* already prepared */ |
2750 | if (evsel->tp_format) | |
2751 | return 0; | |
2752 | ||
2753 | event = pevent_find_event(pevent, evsel->attr.config); | |
cb9dd49e ACM |
2754 | if (event == NULL) |
2755 | return -1; | |
2756 | ||
831394bd NK |
2757 | if (!evsel->name) { |
2758 | snprintf(bf, sizeof(bf), "%s:%s", event->system, event->name); | |
2759 | evsel->name = strdup(bf); | |
2760 | if (evsel->name == NULL) | |
2761 | return -1; | |
2762 | } | |
cb9dd49e | 2763 | |
fcf65bf1 | 2764 | evsel->tp_format = event; |
cb9dd49e ACM |
2765 | return 0; |
2766 | } | |
2767 | ||
831394bd NK |
2768 | static int perf_evlist__prepare_tracepoint_events(struct perf_evlist *evlist, |
2769 | struct pevent *pevent) | |
cb9dd49e ACM |
2770 | { |
2771 | struct perf_evsel *pos; | |
2772 | ||
2773 | list_for_each_entry(pos, &evlist->entries, node) { | |
831394bd NK |
2774 | if (pos->attr.type == PERF_TYPE_TRACEPOINT && |
2775 | perf_evsel__prepare_tracepoint_event(pos, pevent)) | |
cb9dd49e ACM |
2776 | return -1; |
2777 | } | |
2778 | ||
2779 | return 0; | |
2780 | } | |
2781 | ||
a91e5431 | 2782 | int perf_session__read_header(struct perf_session *session, int fd) |
8dc58101 | 2783 | { |
1c0b04d1 | 2784 | struct perf_header *header = &session->header; |
ba21594c | 2785 | struct perf_file_header f_header; |
7c6a1c65 PZ |
2786 | struct perf_file_attr f_attr; |
2787 | u64 f_id; | |
7c6a1c65 PZ |
2788 | int nr_attrs, nr_ids, i, j; |
2789 | ||
334fe7a3 | 2790 | session->evlist = perf_evlist__new(); |
a91e5431 ACM |
2791 | if (session->evlist == NULL) |
2792 | return -ENOMEM; | |
2793 | ||
8dc58101 TZ |
2794 | if (session->fd_pipe) |
2795 | return perf_header__read_pipe(session, fd); | |
2796 | ||
69996df4 | 2797 | if (perf_file_header__read(&f_header, header, fd) < 0) |
4dc0a04b | 2798 | return -EINVAL; |
7c6a1c65 | 2799 | |
69996df4 | 2800 | nr_attrs = f_header.attrs.size / f_header.attr_size; |
7c6a1c65 PZ |
2801 | lseek(fd, f_header.attrs.offset, SEEK_SET); |
2802 | ||
2803 | for (i = 0; i < nr_attrs; i++) { | |
a91e5431 | 2804 | struct perf_evsel *evsel; |
1c222bce | 2805 | off_t tmp; |
7c6a1c65 | 2806 | |
69996df4 | 2807 | if (read_attr(fd, header, &f_attr) < 0) |
769885f3 | 2808 | goto out_errno; |
ba21594c | 2809 | |
eda3913b DA |
2810 | if (header->needs_swap) |
2811 | perf_event__attr_swap(&f_attr.attr); | |
2812 | ||
1c222bce | 2813 | tmp = lseek(fd, 0, SEEK_CUR); |
a91e5431 | 2814 | evsel = perf_evsel__new(&f_attr.attr, i); |
7c6a1c65 | 2815 | |
a91e5431 ACM |
2816 | if (evsel == NULL) |
2817 | goto out_delete_evlist; | |
0807d2d8 ACM |
2818 | |
2819 | evsel->needs_swap = header->needs_swap; | |
a91e5431 ACM |
2820 | /* |
2821 | * Do it before so that if perf_evsel__alloc_id fails, this | |
2822 | * entry gets purged too at perf_evlist__delete(). | |
2823 | */ | |
2824 | perf_evlist__add(session->evlist, evsel); | |
7c6a1c65 PZ |
2825 | |
2826 | nr_ids = f_attr.ids.size / sizeof(u64); | |
a91e5431 ACM |
2827 | /* |
2828 | * We don't have the cpu and thread maps on the header, so | |
2829 | * for allocating the perf_sample_id table we fake 1 cpu and | |
2830 | * hattr->ids threads. | |
2831 | */ | |
2832 | if (perf_evsel__alloc_id(evsel, 1, nr_ids)) | |
2833 | goto out_delete_evlist; | |
2834 | ||
7c6a1c65 PZ |
2835 | lseek(fd, f_attr.ids.offset, SEEK_SET); |
2836 | ||
2837 | for (j = 0; j < nr_ids; j++) { | |
1c0b04d1 | 2838 | if (perf_header__getbuffer64(header, fd, &f_id, sizeof(f_id))) |
769885f3 | 2839 | goto out_errno; |
7c6a1c65 | 2840 | |
a91e5431 | 2841 | perf_evlist__id_add(session->evlist, evsel, 0, j, f_id); |
7c6a1c65 | 2842 | } |
11deb1f9 | 2843 | |
7c6a1c65 PZ |
2844 | lseek(fd, tmp, SEEK_SET); |
2845 | } | |
2846 | ||
d04b35f8 ACM |
2847 | symbol_conf.nr_events = nr_attrs; |
2848 | ||
8755a8f2 AV |
2849 | if (f_header.event_types.size) { |
2850 | lseek(fd, f_header.event_types.offset, SEEK_SET); | |
db146f06 RR |
2851 | trace_events = malloc(f_header.event_types.size); |
2852 | if (trace_events == NULL) | |
4dc0a04b | 2853 | return -ENOMEM; |
db146f06 | 2854 | if (perf_header__getbuffer64(header, fd, trace_events, |
ba21594c | 2855 | f_header.event_types.size)) |
769885f3 | 2856 | goto out_errno; |
db146f06 | 2857 | trace_event_count = f_header.event_types.size / sizeof(struct perf_trace_event_type); |
8755a8f2 | 2858 | } |
03456a15 | 2859 | |
da378962 | 2860 | perf_header__process_sections(header, fd, &session->pevent, |
fbe96f29 | 2861 | perf_file_section__process); |
4778d2e4 | 2862 | |
1c0b04d1 | 2863 | lseek(fd, header->data_offset, SEEK_SET); |
7c6a1c65 | 2864 | |
831394bd NK |
2865 | if (perf_evlist__prepare_tracepoint_events(session->evlist, |
2866 | session->pevent)) | |
cb9dd49e ACM |
2867 | goto out_delete_evlist; |
2868 | ||
1c0b04d1 | 2869 | header->frozen = 1; |
4dc0a04b | 2870 | return 0; |
769885f3 ACM |
2871 | out_errno: |
2872 | return -errno; | |
a91e5431 ACM |
2873 | |
2874 | out_delete_evlist: | |
2875 | perf_evlist__delete(session->evlist); | |
2876 | session->evlist = NULL; | |
2877 | return -ENOMEM; | |
7c6a1c65 | 2878 | } |
0d3a5c88 | 2879 | |
45694aa7 | 2880 | int perf_event__synthesize_attr(struct perf_tool *tool, |
f4d83436 | 2881 | struct perf_event_attr *attr, u32 ids, u64 *id, |
743eb868 | 2882 | perf_event__handler_t process) |
2c46dbb5 | 2883 | { |
8115d60c | 2884 | union perf_event *ev; |
2c46dbb5 TZ |
2885 | size_t size; |
2886 | int err; | |
2887 | ||
2888 | size = sizeof(struct perf_event_attr); | |
9ac3e487 | 2889 | size = PERF_ALIGN(size, sizeof(u64)); |
2c46dbb5 TZ |
2890 | size += sizeof(struct perf_event_header); |
2891 | size += ids * sizeof(u64); | |
2892 | ||
2893 | ev = malloc(size); | |
2894 | ||
ce47dc56 CS |
2895 | if (ev == NULL) |
2896 | return -ENOMEM; | |
2897 | ||
2c46dbb5 TZ |
2898 | ev->attr.attr = *attr; |
2899 | memcpy(ev->attr.id, id, ids * sizeof(u64)); | |
2900 | ||
2901 | ev->attr.header.type = PERF_RECORD_HEADER_ATTR; | |
f4d83436 | 2902 | ev->attr.header.size = (u16)size; |
2c46dbb5 | 2903 | |
f4d83436 RR |
2904 | if (ev->attr.header.size == size) |
2905 | err = process(tool, ev, NULL, NULL); | |
2906 | else | |
2907 | err = -E2BIG; | |
2c46dbb5 TZ |
2908 | |
2909 | free(ev); | |
2910 | ||
2911 | return err; | |
2912 | } | |
2913 | ||
45694aa7 | 2914 | int perf_event__synthesize_attrs(struct perf_tool *tool, |
d20deb64 | 2915 | struct perf_session *session, |
a91e5431 | 2916 | perf_event__handler_t process) |
2c46dbb5 | 2917 | { |
6606f873 | 2918 | struct perf_evsel *evsel; |
a91e5431 | 2919 | int err = 0; |
2c46dbb5 | 2920 | |
6606f873 RR |
2921 | list_for_each_entry(evsel, &session->evlist->entries, node) { |
2922 | err = perf_event__synthesize_attr(tool, &evsel->attr, evsel->ids, | |
2923 | evsel->id, process); | |
2c46dbb5 TZ |
2924 | if (err) { |
2925 | pr_debug("failed to create perf header attribute\n"); | |
2926 | return err; | |
2927 | } | |
2928 | } | |
2929 | ||
2930 | return err; | |
2931 | } | |
2932 | ||
8115d60c | 2933 | int perf_event__process_attr(union perf_event *event, |
10d0f086 | 2934 | struct perf_evlist **pevlist) |
2c46dbb5 | 2935 | { |
f4d83436 | 2936 | u32 i, ids, n_ids; |
a91e5431 | 2937 | struct perf_evsel *evsel; |
10d0f086 | 2938 | struct perf_evlist *evlist = *pevlist; |
2c46dbb5 | 2939 | |
10d0f086 | 2940 | if (evlist == NULL) { |
334fe7a3 | 2941 | *pevlist = evlist = perf_evlist__new(); |
10d0f086 | 2942 | if (evlist == NULL) |
a91e5431 ACM |
2943 | return -ENOMEM; |
2944 | } | |
2945 | ||
10d0f086 | 2946 | evsel = perf_evsel__new(&event->attr.attr, evlist->nr_entries); |
a91e5431 | 2947 | if (evsel == NULL) |
2c46dbb5 TZ |
2948 | return -ENOMEM; |
2949 | ||
10d0f086 | 2950 | perf_evlist__add(evlist, evsel); |
a91e5431 | 2951 | |
8115d60c ACM |
2952 | ids = event->header.size; |
2953 | ids -= (void *)&event->attr.id - (void *)event; | |
2c46dbb5 | 2954 | n_ids = ids / sizeof(u64); |
a91e5431 ACM |
2955 | /* |
2956 | * We don't have the cpu and thread maps on the header, so | |
2957 | * for allocating the perf_sample_id table we fake 1 cpu and | |
2958 | * hattr->ids threads. | |
2959 | */ | |
2960 | if (perf_evsel__alloc_id(evsel, 1, n_ids)) | |
2961 | return -ENOMEM; | |
2c46dbb5 TZ |
2962 | |
2963 | for (i = 0; i < n_ids; i++) { | |
10d0f086 | 2964 | perf_evlist__id_add(evlist, evsel, 0, i, event->attr.id[i]); |
2c46dbb5 TZ |
2965 | } |
2966 | ||
2c46dbb5 TZ |
2967 | return 0; |
2968 | } | |
cd19a035 | 2969 | |
45694aa7 | 2970 | int perf_event__synthesize_event_type(struct perf_tool *tool, |
d20deb64 | 2971 | u64 event_id, char *name, |
8115d60c | 2972 | perf_event__handler_t process, |
743eb868 | 2973 | struct machine *machine) |
cd19a035 | 2974 | { |
8115d60c | 2975 | union perf_event ev; |
cd19a035 TZ |
2976 | size_t size = 0; |
2977 | int err = 0; | |
2978 | ||
2979 | memset(&ev, 0, sizeof(ev)); | |
2980 | ||
2981 | ev.event_type.event_type.event_id = event_id; | |
2982 | memset(ev.event_type.event_type.name, 0, MAX_EVENT_NAME); | |
2983 | strncpy(ev.event_type.event_type.name, name, MAX_EVENT_NAME - 1); | |
2984 | ||
2985 | ev.event_type.header.type = PERF_RECORD_HEADER_EVENT_TYPE; | |
f8f4b287 | 2986 | size = strlen(ev.event_type.event_type.name); |
9ac3e487 | 2987 | size = PERF_ALIGN(size, sizeof(u64)); |
cd19a035 TZ |
2988 | ev.event_type.header.size = sizeof(ev.event_type) - |
2989 | (sizeof(ev.event_type.event_type.name) - size); | |
2990 | ||
45694aa7 | 2991 | err = process(tool, &ev, NULL, machine); |
cd19a035 TZ |
2992 | |
2993 | return err; | |
2994 | } | |
2995 | ||
45694aa7 | 2996 | int perf_event__synthesize_event_types(struct perf_tool *tool, |
d20deb64 | 2997 | perf_event__handler_t process, |
743eb868 | 2998 | struct machine *machine) |
cd19a035 TZ |
2999 | { |
3000 | struct perf_trace_event_type *type; | |
3001 | int i, err = 0; | |
3002 | ||
db146f06 RR |
3003 | for (i = 0; i < trace_event_count; i++) { |
3004 | type = &trace_events[i]; | |
cd19a035 | 3005 | |
45694aa7 | 3006 | err = perf_event__synthesize_event_type(tool, type->event_id, |
8115d60c | 3007 | type->name, process, |
743eb868 | 3008 | machine); |
cd19a035 TZ |
3009 | if (err) { |
3010 | pr_debug("failed to create perf header event type\n"); | |
3011 | return err; | |
3012 | } | |
3013 | } | |
3014 | ||
3015 | return err; | |
3016 | } | |
3017 | ||
1d037ca1 | 3018 | int perf_event__process_event_type(struct perf_tool *tool __maybe_unused, |
743eb868 | 3019 | union perf_event *event) |
cd19a035 | 3020 | { |
8115d60c ACM |
3021 | if (perf_header__push_event(event->event_type.event_type.event_id, |
3022 | event->event_type.event_type.name) < 0) | |
cd19a035 TZ |
3023 | return -ENOMEM; |
3024 | ||
3025 | return 0; | |
3026 | } | |
9215545e | 3027 | |
45694aa7 | 3028 | int perf_event__synthesize_tracing_data(struct perf_tool *tool, int fd, |
d20deb64 | 3029 | struct perf_evlist *evlist, |
743eb868 | 3030 | perf_event__handler_t process) |
9215545e | 3031 | { |
8115d60c | 3032 | union perf_event ev; |
29208e57 | 3033 | struct tracing_data *tdata; |
9215545e | 3034 | ssize_t size = 0, aligned_size = 0, padding; |
1d037ca1 | 3035 | int err __maybe_unused = 0; |
9215545e | 3036 | |
29208e57 JO |
3037 | /* |
3038 | * We are going to store the size of the data followed | |
3039 | * by the data contents. Since the fd descriptor is a pipe, | |
3040 | * we cannot seek back to store the size of the data once | |
3041 | * we know it. Instead we: | |
3042 | * | |
3043 | * - write the tracing data to the temp file | |
3044 | * - get/write the data size to pipe | |
3045 | * - write the tracing data from the temp file | |
3046 | * to the pipe | |
3047 | */ | |
3048 | tdata = tracing_data_get(&evlist->entries, fd, true); | |
3049 | if (!tdata) | |
3050 | return -1; | |
3051 | ||
9215545e TZ |
3052 | memset(&ev, 0, sizeof(ev)); |
3053 | ||
3054 | ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA; | |
29208e57 | 3055 | size = tdata->size; |
9ac3e487 | 3056 | aligned_size = PERF_ALIGN(size, sizeof(u64)); |
9215545e TZ |
3057 | padding = aligned_size - size; |
3058 | ev.tracing_data.header.size = sizeof(ev.tracing_data); | |
3059 | ev.tracing_data.size = aligned_size; | |
3060 | ||
45694aa7 | 3061 | process(tool, &ev, NULL, NULL); |
9215545e | 3062 | |
29208e57 JO |
3063 | /* |
3064 | * The put function will copy all the tracing data | |
3065 | * stored in temp file to the pipe. | |
3066 | */ | |
3067 | tracing_data_put(tdata); | |
3068 | ||
9215545e TZ |
3069 | write_padded(fd, NULL, 0, padding); |
3070 | ||
3071 | return aligned_size; | |
3072 | } | |
3073 | ||
8115d60c ACM |
3074 | int perf_event__process_tracing_data(union perf_event *event, |
3075 | struct perf_session *session) | |
9215545e | 3076 | { |
8115d60c | 3077 | ssize_t size_read, padding, size = event->tracing_data.size; |
9215545e TZ |
3078 | off_t offset = lseek(session->fd, 0, SEEK_CUR); |
3079 | char buf[BUFSIZ]; | |
3080 | ||
3081 | /* setup for reading amidst mmap */ | |
3082 | lseek(session->fd, offset + sizeof(struct tracing_data_event), | |
3083 | SEEK_SET); | |
3084 | ||
da378962 ACM |
3085 | size_read = trace_report(session->fd, &session->pevent, |
3086 | session->repipe); | |
9ac3e487 | 3087 | padding = PERF_ALIGN(size_read, sizeof(u64)) - size_read; |
9215545e | 3088 | |
2caa48a2 ACM |
3089 | if (readn(session->fd, buf, padding) < 0) { |
3090 | pr_err("%s: reading input file", __func__); | |
3091 | return -1; | |
3092 | } | |
454c407e TZ |
3093 | if (session->repipe) { |
3094 | int retw = write(STDOUT_FILENO, buf, padding); | |
2caa48a2 ACM |
3095 | if (retw <= 0 || retw != padding) { |
3096 | pr_err("%s: repiping tracing data padding", __func__); | |
3097 | return -1; | |
3098 | } | |
454c407e | 3099 | } |
9215545e | 3100 | |
2caa48a2 ACM |
3101 | if (size_read + padding != size) { |
3102 | pr_err("%s: tracing data size mismatch", __func__); | |
3103 | return -1; | |
3104 | } | |
9215545e | 3105 | |
831394bd NK |
3106 | perf_evlist__prepare_tracepoint_events(session->evlist, |
3107 | session->pevent); | |
8b6ee4c5 | 3108 | |
9215545e TZ |
3109 | return size_read + padding; |
3110 | } | |
c7929e47 | 3111 | |
45694aa7 | 3112 | int perf_event__synthesize_build_id(struct perf_tool *tool, |
d20deb64 | 3113 | struct dso *pos, u16 misc, |
8115d60c | 3114 | perf_event__handler_t process, |
743eb868 | 3115 | struct machine *machine) |
c7929e47 | 3116 | { |
8115d60c | 3117 | union perf_event ev; |
c7929e47 TZ |
3118 | size_t len; |
3119 | int err = 0; | |
3120 | ||
3121 | if (!pos->hit) | |
3122 | return err; | |
3123 | ||
3124 | memset(&ev, 0, sizeof(ev)); | |
3125 | ||
3126 | len = pos->long_name_len + 1; | |
9ac3e487 | 3127 | len = PERF_ALIGN(len, NAME_ALIGN); |
c7929e47 TZ |
3128 | memcpy(&ev.build_id.build_id, pos->build_id, sizeof(pos->build_id)); |
3129 | ev.build_id.header.type = PERF_RECORD_HEADER_BUILD_ID; | |
3130 | ev.build_id.header.misc = misc; | |
23346f21 | 3131 | ev.build_id.pid = machine->pid; |
c7929e47 TZ |
3132 | ev.build_id.header.size = sizeof(ev.build_id) + len; |
3133 | memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len); | |
3134 | ||
45694aa7 | 3135 | err = process(tool, &ev, NULL, machine); |
c7929e47 TZ |
3136 | |
3137 | return err; | |
3138 | } | |
3139 | ||
1d037ca1 | 3140 | int perf_event__process_build_id(struct perf_tool *tool __maybe_unused, |
d20deb64 | 3141 | union perf_event *event, |
8115d60c | 3142 | struct perf_session *session) |
c7929e47 | 3143 | { |
8115d60c ACM |
3144 | __event_process_build_id(&event->build_id, |
3145 | event->build_id.filename, | |
a1645ce1 | 3146 | session); |
c7929e47 TZ |
3147 | return 0; |
3148 | } | |
a1ac1d3c SE |
3149 | |
3150 | void disable_buildid_cache(void) | |
3151 | { | |
3152 | no_buildid_cache = true; | |
3153 | } |