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Commit | Line | Data |
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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
a43783ae | 2 | #include <errno.h> |
fd20e811 | 3 | #include <inttypes.h> |
a9072bc0 | 4 | #include "util.h" |
a067558e | 5 | #include "string2.h" |
391e4206 | 6 | #include <sys/param.h> |
7c6a1c65 | 7 | #include <sys/types.h> |
ba21594c | 8 | #include <byteswap.h> |
7c6a1c65 PZ |
9 | #include <unistd.h> |
10 | #include <stdio.h> | |
11 | #include <stdlib.h> | |
0353631a | 12 | #include <linux/compiler.h> |
8671dab9 | 13 | #include <linux/list.h> |
ba21594c | 14 | #include <linux/kernel.h> |
b1e5a9be | 15 | #include <linux/bitops.h> |
a4d8c985 | 16 | #include <linux/stringify.h> |
7a8ef4c4 ACM |
17 | #include <sys/stat.h> |
18 | #include <sys/types.h> | |
fbe96f29 | 19 | #include <sys/utsname.h> |
7a8ef4c4 | 20 | #include <unistd.h> |
7c6a1c65 | 21 | |
361c99a6 | 22 | #include "evlist.h" |
a91e5431 | 23 | #include "evsel.h" |
7c6a1c65 | 24 | #include "header.h" |
98521b38 | 25 | #include "memswap.h" |
03456a15 FW |
26 | #include "../perf.h" |
27 | #include "trace-event.h" | |
301a0b02 | 28 | #include "session.h" |
8671dab9 | 29 | #include "symbol.h" |
4778d2e4 | 30 | #include "debug.h" |
fbe96f29 | 31 | #include "cpumap.h" |
50a9667c | 32 | #include "pmu.h" |
7dbf4dcf | 33 | #include "vdso.h" |
a1ae5655 | 34 | #include "strbuf.h" |
ebb296c2 | 35 | #include "build-id.h" |
cc9784bd | 36 | #include "data.h" |
720e98b5 JO |
37 | #include <api/fs/fs.h> |
38 | #include "asm/bug.h" | |
e9def1b2 | 39 | #include "tool.h" |
7c6a1c65 | 40 | |
3d689ed6 ACM |
41 | #include "sane_ctype.h" |
42 | ||
73323f54 SE |
43 | /* |
44 | * magic2 = "PERFILE2" | |
45 | * must be a numerical value to let the endianness | |
46 | * determine the memory layout. That way we are able | |
47 | * to detect endianness when reading the perf.data file | |
48 | * back. | |
49 | * | |
50 | * we check for legacy (PERFFILE) format. | |
51 | */ | |
52 | static const char *__perf_magic1 = "PERFFILE"; | |
53 | static const u64 __perf_magic2 = 0x32454c4946524550ULL; | |
54 | static const u64 __perf_magic2_sw = 0x50455246494c4532ULL; | |
7c6a1c65 | 55 | |
73323f54 | 56 | #define PERF_MAGIC __perf_magic2 |
7c6a1c65 | 57 | |
d25ed5d9 SA |
58 | const char perf_version_string[] = PERF_VERSION; |
59 | ||
7c6a1c65 | 60 | struct perf_file_attr { |
cdd6c482 | 61 | struct perf_event_attr attr; |
7c6a1c65 PZ |
62 | struct perf_file_section ids; |
63 | }; | |
64 | ||
ccebbeb6 DCC |
65 | struct feat_fd { |
66 | struct perf_header *ph; | |
67 | int fd; | |
0b3d3410 | 68 | void *buf; /* Either buf != NULL or fd >= 0 */ |
62552457 DCC |
69 | ssize_t offset; |
70 | size_t size; | |
f9ebdccf | 71 | struct perf_evsel *events; |
ccebbeb6 DCC |
72 | }; |
73 | ||
1c0b04d1 | 74 | void perf_header__set_feat(struct perf_header *header, int feat) |
8d06367f | 75 | { |
1c0b04d1 | 76 | set_bit(feat, header->adds_features); |
8d06367f ACM |
77 | } |
78 | ||
1c0b04d1 | 79 | void perf_header__clear_feat(struct perf_header *header, int feat) |
baa2f6ce | 80 | { |
1c0b04d1 | 81 | clear_bit(feat, header->adds_features); |
baa2f6ce ACM |
82 | } |
83 | ||
1c0b04d1 | 84 | bool perf_header__has_feat(const struct perf_header *header, int feat) |
8d06367f | 85 | { |
1c0b04d1 | 86 | return test_bit(feat, header->adds_features); |
8d06367f ACM |
87 | } |
88 | ||
0b3d3410 | 89 | static int __do_write_fd(struct feat_fd *ff, const void *buf, size_t size) |
7c6a1c65 | 90 | { |
0b3d3410 | 91 | ssize_t ret = writen(ff->fd, buf, size); |
7c6a1c65 | 92 | |
3b8f51a6 DCC |
93 | if (ret != (ssize_t)size) |
94 | return ret < 0 ? (int)ret : -1; | |
0b3d3410 DCC |
95 | return 0; |
96 | } | |
97 | ||
98 | static int __do_write_buf(struct feat_fd *ff, const void *buf, size_t size) | |
99 | { | |
100 | /* struct perf_event_header::size is u16 */ | |
101 | const size_t max_size = 0xffff - sizeof(struct perf_event_header); | |
102 | size_t new_size = ff->size; | |
103 | void *addr; | |
104 | ||
105 | if (size + ff->offset > max_size) | |
106 | return -E2BIG; | |
107 | ||
108 | while (size > (new_size - ff->offset)) | |
109 | new_size <<= 1; | |
110 | new_size = min(max_size, new_size); | |
111 | ||
112 | if (ff->size < new_size) { | |
113 | addr = realloc(ff->buf, new_size); | |
114 | if (!addr) | |
115 | return -ENOMEM; | |
116 | ff->buf = addr; | |
117 | ff->size = new_size; | |
118 | } | |
119 | ||
120 | memcpy(ff->buf + ff->offset, buf, size); | |
121 | ff->offset += size; | |
3726cc75 ACM |
122 | |
123 | return 0; | |
7c6a1c65 PZ |
124 | } |
125 | ||
0b3d3410 DCC |
126 | /* Return: 0 if succeded, -ERR if failed. */ |
127 | int do_write(struct feat_fd *ff, const void *buf, size_t size) | |
128 | { | |
129 | if (!ff->buf) | |
130 | return __do_write_fd(ff, buf, size); | |
131 | return __do_write_buf(ff, buf, size); | |
132 | } | |
133 | ||
2ff5365d | 134 | /* Return: 0 if succeded, -ERR if failed. */ |
ccebbeb6 DCC |
135 | int write_padded(struct feat_fd *ff, const void *bf, |
136 | size_t count, size_t count_aligned) | |
f92cb24c ACM |
137 | { |
138 | static const char zero_buf[NAME_ALIGN]; | |
ccebbeb6 | 139 | int err = do_write(ff, bf, count); |
f92cb24c ACM |
140 | |
141 | if (!err) | |
ccebbeb6 | 142 | err = do_write(ff, zero_buf, count_aligned - count); |
f92cb24c ACM |
143 | |
144 | return err; | |
145 | } | |
146 | ||
2bb00d2f KL |
147 | #define string_size(str) \ |
148 | (PERF_ALIGN((strlen(str) + 1), NAME_ALIGN) + sizeof(u32)) | |
149 | ||
2ff5365d | 150 | /* Return: 0 if succeded, -ERR if failed. */ |
ccebbeb6 | 151 | static int do_write_string(struct feat_fd *ff, const char *str) |
fbe96f29 SE |
152 | { |
153 | u32 len, olen; | |
154 | int ret; | |
155 | ||
156 | olen = strlen(str) + 1; | |
9ac3e487 | 157 | len = PERF_ALIGN(olen, NAME_ALIGN); |
fbe96f29 SE |
158 | |
159 | /* write len, incl. \0 */ | |
ccebbeb6 | 160 | ret = do_write(ff, &len, sizeof(len)); |
fbe96f29 SE |
161 | if (ret < 0) |
162 | return ret; | |
163 | ||
ccebbeb6 | 164 | return write_padded(ff, str, olen, len); |
fbe96f29 SE |
165 | } |
166 | ||
0b3d3410 | 167 | static int __do_read_fd(struct feat_fd *ff, void *addr, ssize_t size) |
6200e494 | 168 | { |
48e5fcea | 169 | ssize_t ret = readn(ff->fd, addr, size); |
6200e494 DCC |
170 | |
171 | if (ret != size) | |
172 | return ret < 0 ? (int)ret : -1; | |
173 | return 0; | |
174 | } | |
175 | ||
0b3d3410 DCC |
176 | static int __do_read_buf(struct feat_fd *ff, void *addr, ssize_t size) |
177 | { | |
178 | if (size > (ssize_t)ff->size - ff->offset) | |
179 | return -1; | |
180 | ||
181 | memcpy(addr, ff->buf + ff->offset, size); | |
182 | ff->offset += size; | |
183 | ||
184 | return 0; | |
185 | ||
186 | } | |
187 | ||
188 | static int __do_read(struct feat_fd *ff, void *addr, ssize_t size) | |
189 | { | |
190 | if (!ff->buf) | |
191 | return __do_read_fd(ff, addr, size); | |
192 | return __do_read_buf(ff, addr, size); | |
193 | } | |
194 | ||
48e5fcea | 195 | static int do_read_u32(struct feat_fd *ff, u32 *addr) |
6200e494 DCC |
196 | { |
197 | int ret; | |
198 | ||
48e5fcea | 199 | ret = __do_read(ff, addr, sizeof(*addr)); |
6200e494 DCC |
200 | if (ret) |
201 | return ret; | |
202 | ||
48e5fcea | 203 | if (ff->ph->needs_swap) |
6200e494 DCC |
204 | *addr = bswap_32(*addr); |
205 | return 0; | |
206 | } | |
207 | ||
48e5fcea | 208 | static int do_read_u64(struct feat_fd *ff, u64 *addr) |
6200e494 DCC |
209 | { |
210 | int ret; | |
211 | ||
48e5fcea | 212 | ret = __do_read(ff, addr, sizeof(*addr)); |
6200e494 DCC |
213 | if (ret) |
214 | return ret; | |
215 | ||
48e5fcea | 216 | if (ff->ph->needs_swap) |
6200e494 DCC |
217 | *addr = bswap_64(*addr); |
218 | return 0; | |
219 | } | |
220 | ||
48e5fcea | 221 | static char *do_read_string(struct feat_fd *ff) |
fbe96f29 | 222 | { |
fbe96f29 SE |
223 | u32 len; |
224 | char *buf; | |
225 | ||
48e5fcea | 226 | if (do_read_u32(ff, &len)) |
fbe96f29 SE |
227 | return NULL; |
228 | ||
fbe96f29 SE |
229 | buf = malloc(len); |
230 | if (!buf) | |
231 | return NULL; | |
232 | ||
48e5fcea | 233 | if (!__do_read(ff, buf, len)) { |
fbe96f29 SE |
234 | /* |
235 | * strings are padded by zeroes | |
236 | * thus the actual strlen of buf | |
237 | * may be less than len | |
238 | */ | |
239 | return buf; | |
240 | } | |
241 | ||
242 | free(buf); | |
243 | return NULL; | |
244 | } | |
245 | ||
ccebbeb6 DCC |
246 | static int write_tracing_data(struct feat_fd *ff, |
247 | struct perf_evlist *evlist) | |
fbe96f29 | 248 | { |
0b3d3410 DCC |
249 | if (WARN(ff->buf, "Error: calling %s in pipe-mode.\n", __func__)) |
250 | return -1; | |
251 | ||
ccebbeb6 | 252 | return read_tracing_data(ff->fd, &evlist->entries); |
fbe96f29 SE |
253 | } |
254 | ||
ccebbeb6 | 255 | static int write_build_id(struct feat_fd *ff, |
1d037ca1 | 256 | struct perf_evlist *evlist __maybe_unused) |
fbe96f29 SE |
257 | { |
258 | struct perf_session *session; | |
259 | int err; | |
260 | ||
ccebbeb6 | 261 | session = container_of(ff->ph, struct perf_session, header); |
fbe96f29 | 262 | |
e20960c0 RR |
263 | if (!perf_session__read_build_ids(session, true)) |
264 | return -1; | |
265 | ||
0b3d3410 DCC |
266 | if (WARN(ff->buf, "Error: calling %s in pipe-mode.\n", __func__)) |
267 | return -1; | |
268 | ||
ccebbeb6 | 269 | err = perf_session__write_buildid_table(session, ff); |
fbe96f29 SE |
270 | if (err < 0) { |
271 | pr_debug("failed to write buildid table\n"); | |
272 | return err; | |
273 | } | |
73c5d224 | 274 | perf_session__cache_build_ids(session); |
fbe96f29 SE |
275 | |
276 | return 0; | |
277 | } | |
278 | ||
ccebbeb6 | 279 | static int write_hostname(struct feat_fd *ff, |
1d037ca1 | 280 | struct perf_evlist *evlist __maybe_unused) |
fbe96f29 SE |
281 | { |
282 | struct utsname uts; | |
283 | int ret; | |
284 | ||
285 | ret = uname(&uts); | |
286 | if (ret < 0) | |
287 | return -1; | |
288 | ||
ccebbeb6 | 289 | return do_write_string(ff, uts.nodename); |
fbe96f29 SE |
290 | } |
291 | ||
ccebbeb6 | 292 | static int write_osrelease(struct feat_fd *ff, |
1d037ca1 | 293 | struct perf_evlist *evlist __maybe_unused) |
fbe96f29 SE |
294 | { |
295 | struct utsname uts; | |
296 | int ret; | |
297 | ||
298 | ret = uname(&uts); | |
299 | if (ret < 0) | |
300 | return -1; | |
301 | ||
ccebbeb6 | 302 | return do_write_string(ff, uts.release); |
fbe96f29 SE |
303 | } |
304 | ||
ccebbeb6 | 305 | static int write_arch(struct feat_fd *ff, |
1d037ca1 | 306 | struct perf_evlist *evlist __maybe_unused) |
fbe96f29 SE |
307 | { |
308 | struct utsname uts; | |
309 | int ret; | |
310 | ||
311 | ret = uname(&uts); | |
312 | if (ret < 0) | |
313 | return -1; | |
314 | ||
ccebbeb6 | 315 | return do_write_string(ff, uts.machine); |
fbe96f29 SE |
316 | } |
317 | ||
ccebbeb6 | 318 | static int write_version(struct feat_fd *ff, |
1d037ca1 | 319 | struct perf_evlist *evlist __maybe_unused) |
fbe96f29 | 320 | { |
ccebbeb6 | 321 | return do_write_string(ff, perf_version_string); |
fbe96f29 SE |
322 | } |
323 | ||
ccebbeb6 | 324 | static int __write_cpudesc(struct feat_fd *ff, const char *cpuinfo_proc) |
fbe96f29 | 325 | { |
fbe96f29 SE |
326 | FILE *file; |
327 | char *buf = NULL; | |
328 | char *s, *p; | |
493c3031 | 329 | const char *search = cpuinfo_proc; |
fbe96f29 SE |
330 | size_t len = 0; |
331 | int ret = -1; | |
332 | ||
333 | if (!search) | |
334 | return -1; | |
335 | ||
336 | file = fopen("/proc/cpuinfo", "r"); | |
337 | if (!file) | |
338 | return -1; | |
339 | ||
340 | while (getline(&buf, &len, file) > 0) { | |
341 | ret = strncmp(buf, search, strlen(search)); | |
342 | if (!ret) | |
343 | break; | |
344 | } | |
345 | ||
ed307758 WN |
346 | if (ret) { |
347 | ret = -1; | |
fbe96f29 | 348 | goto done; |
ed307758 | 349 | } |
fbe96f29 SE |
350 | |
351 | s = buf; | |
352 | ||
353 | p = strchr(buf, ':'); | |
354 | if (p && *(p+1) == ' ' && *(p+2)) | |
355 | s = p + 2; | |
356 | p = strchr(s, '\n'); | |
357 | if (p) | |
358 | *p = '\0'; | |
359 | ||
360 | /* squash extra space characters (branding string) */ | |
361 | p = s; | |
362 | while (*p) { | |
363 | if (isspace(*p)) { | |
364 | char *r = p + 1; | |
365 | char *q = r; | |
366 | *p = ' '; | |
367 | while (*q && isspace(*q)) | |
368 | q++; | |
369 | if (q != (p+1)) | |
370 | while ((*r++ = *q++)); | |
371 | } | |
372 | p++; | |
373 | } | |
ccebbeb6 | 374 | ret = do_write_string(ff, s); |
fbe96f29 SE |
375 | done: |
376 | free(buf); | |
377 | fclose(file); | |
378 | return ret; | |
379 | } | |
380 | ||
ccebbeb6 | 381 | static int write_cpudesc(struct feat_fd *ff, |
493c3031 WN |
382 | struct perf_evlist *evlist __maybe_unused) |
383 | { | |
493c3031 WN |
384 | const char *cpuinfo_procs[] = CPUINFO_PROC; |
385 | unsigned int i; | |
386 | ||
387 | for (i = 0; i < ARRAY_SIZE(cpuinfo_procs); i++) { | |
388 | int ret; | |
ccebbeb6 | 389 | ret = __write_cpudesc(ff, cpuinfo_procs[i]); |
493c3031 WN |
390 | if (ret >= 0) |
391 | return ret; | |
392 | } | |
393 | return -1; | |
394 | } | |
395 | ||
396 | ||
ccebbeb6 | 397 | static int write_nrcpus(struct feat_fd *ff, |
1d037ca1 | 398 | struct perf_evlist *evlist __maybe_unused) |
fbe96f29 SE |
399 | { |
400 | long nr; | |
401 | u32 nrc, nra; | |
402 | int ret; | |
403 | ||
da8a58b5 | 404 | nrc = cpu__max_present_cpu(); |
fbe96f29 SE |
405 | |
406 | nr = sysconf(_SC_NPROCESSORS_ONLN); | |
407 | if (nr < 0) | |
408 | return -1; | |
409 | ||
410 | nra = (u32)(nr & UINT_MAX); | |
411 | ||
ccebbeb6 | 412 | ret = do_write(ff, &nrc, sizeof(nrc)); |
fbe96f29 SE |
413 | if (ret < 0) |
414 | return ret; | |
415 | ||
ccebbeb6 | 416 | return do_write(ff, &nra, sizeof(nra)); |
fbe96f29 SE |
417 | } |
418 | ||
ccebbeb6 | 419 | static int write_event_desc(struct feat_fd *ff, |
fbe96f29 SE |
420 | struct perf_evlist *evlist) |
421 | { | |
6606f873 | 422 | struct perf_evsel *evsel; |
74ba9e11 | 423 | u32 nre, nri, sz; |
fbe96f29 SE |
424 | int ret; |
425 | ||
74ba9e11 | 426 | nre = evlist->nr_entries; |
fbe96f29 SE |
427 | |
428 | /* | |
429 | * write number of events | |
430 | */ | |
ccebbeb6 | 431 | ret = do_write(ff, &nre, sizeof(nre)); |
fbe96f29 SE |
432 | if (ret < 0) |
433 | return ret; | |
434 | ||
435 | /* | |
436 | * size of perf_event_attr struct | |
437 | */ | |
6606f873 | 438 | sz = (u32)sizeof(evsel->attr); |
ccebbeb6 | 439 | ret = do_write(ff, &sz, sizeof(sz)); |
fbe96f29 SE |
440 | if (ret < 0) |
441 | return ret; | |
442 | ||
e5cadb93 | 443 | evlist__for_each_entry(evlist, evsel) { |
ccebbeb6 | 444 | ret = do_write(ff, &evsel->attr, sz); |
fbe96f29 SE |
445 | if (ret < 0) |
446 | return ret; | |
447 | /* | |
448 | * write number of unique id per event | |
449 | * there is one id per instance of an event | |
450 | * | |
451 | * copy into an nri to be independent of the | |
452 | * type of ids, | |
453 | */ | |
6606f873 | 454 | nri = evsel->ids; |
ccebbeb6 | 455 | ret = do_write(ff, &nri, sizeof(nri)); |
fbe96f29 SE |
456 | if (ret < 0) |
457 | return ret; | |
458 | ||
459 | /* | |
460 | * write event string as passed on cmdline | |
461 | */ | |
ccebbeb6 | 462 | ret = do_write_string(ff, perf_evsel__name(evsel)); |
fbe96f29 SE |
463 | if (ret < 0) |
464 | return ret; | |
465 | /* | |
466 | * write unique ids for this event | |
467 | */ | |
ccebbeb6 | 468 | ret = do_write(ff, evsel->id, evsel->ids * sizeof(u64)); |
fbe96f29 SE |
469 | if (ret < 0) |
470 | return ret; | |
471 | } | |
472 | return 0; | |
473 | } | |
474 | ||
ccebbeb6 | 475 | static int write_cmdline(struct feat_fd *ff, |
1d037ca1 | 476 | struct perf_evlist *evlist __maybe_unused) |
fbe96f29 SE |
477 | { |
478 | char buf[MAXPATHLEN]; | |
b6998692 ACM |
479 | u32 n; |
480 | int i, ret; | |
fbe96f29 | 481 | |
55f77128 TR |
482 | /* actual path to perf binary */ |
483 | ret = readlink("/proc/self/exe", buf, sizeof(buf) - 1); | |
fbe96f29 SE |
484 | if (ret <= 0) |
485 | return -1; | |
486 | ||
487 | /* readlink() does not add null termination */ | |
488 | buf[ret] = '\0'; | |
489 | ||
490 | /* account for binary path */ | |
b6998692 | 491 | n = perf_env.nr_cmdline + 1; |
fbe96f29 | 492 | |
ccebbeb6 | 493 | ret = do_write(ff, &n, sizeof(n)); |
fbe96f29 SE |
494 | if (ret < 0) |
495 | return ret; | |
496 | ||
ccebbeb6 | 497 | ret = do_write_string(ff, buf); |
fbe96f29 SE |
498 | if (ret < 0) |
499 | return ret; | |
500 | ||
b6998692 | 501 | for (i = 0 ; i < perf_env.nr_cmdline; i++) { |
ccebbeb6 | 502 | ret = do_write_string(ff, perf_env.cmdline_argv[i]); |
fbe96f29 SE |
503 | if (ret < 0) |
504 | return ret; | |
505 | } | |
506 | return 0; | |
507 | } | |
508 | ||
509 | #define CORE_SIB_FMT \ | |
510 | "/sys/devices/system/cpu/cpu%d/topology/core_siblings_list" | |
511 | #define THRD_SIB_FMT \ | |
512 | "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list" | |
513 | ||
514 | struct cpu_topo { | |
2bb00d2f | 515 | u32 cpu_nr; |
fbe96f29 SE |
516 | u32 core_sib; |
517 | u32 thread_sib; | |
518 | char **core_siblings; | |
519 | char **thread_siblings; | |
520 | }; | |
521 | ||
522 | static int build_cpu_topo(struct cpu_topo *tp, int cpu) | |
523 | { | |
524 | FILE *fp; | |
525 | char filename[MAXPATHLEN]; | |
526 | char *buf = NULL, *p; | |
527 | size_t len = 0; | |
c5885749 | 528 | ssize_t sret; |
fbe96f29 SE |
529 | u32 i = 0; |
530 | int ret = -1; | |
531 | ||
532 | sprintf(filename, CORE_SIB_FMT, cpu); | |
533 | fp = fopen(filename, "r"); | |
534 | if (!fp) | |
c5885749 | 535 | goto try_threads; |
fbe96f29 | 536 | |
c5885749 | 537 | sret = getline(&buf, &len, fp); |
fbe96f29 | 538 | fclose(fp); |
c5885749 SE |
539 | if (sret <= 0) |
540 | goto try_threads; | |
fbe96f29 SE |
541 | |
542 | p = strchr(buf, '\n'); | |
543 | if (p) | |
544 | *p = '\0'; | |
545 | ||
546 | for (i = 0; i < tp->core_sib; i++) { | |
547 | if (!strcmp(buf, tp->core_siblings[i])) | |
548 | break; | |
549 | } | |
550 | if (i == tp->core_sib) { | |
551 | tp->core_siblings[i] = buf; | |
552 | tp->core_sib++; | |
553 | buf = NULL; | |
554 | len = 0; | |
555 | } | |
c5885749 | 556 | ret = 0; |
fbe96f29 | 557 | |
c5885749 | 558 | try_threads: |
fbe96f29 SE |
559 | sprintf(filename, THRD_SIB_FMT, cpu); |
560 | fp = fopen(filename, "r"); | |
561 | if (!fp) | |
562 | goto done; | |
563 | ||
564 | if (getline(&buf, &len, fp) <= 0) | |
565 | goto done; | |
566 | ||
567 | p = strchr(buf, '\n'); | |
568 | if (p) | |
569 | *p = '\0'; | |
570 | ||
571 | for (i = 0; i < tp->thread_sib; i++) { | |
572 | if (!strcmp(buf, tp->thread_siblings[i])) | |
573 | break; | |
574 | } | |
575 | if (i == tp->thread_sib) { | |
576 | tp->thread_siblings[i] = buf; | |
577 | tp->thread_sib++; | |
578 | buf = NULL; | |
579 | } | |
580 | ret = 0; | |
581 | done: | |
582 | if(fp) | |
583 | fclose(fp); | |
584 | free(buf); | |
585 | return ret; | |
586 | } | |
587 | ||
588 | static void free_cpu_topo(struct cpu_topo *tp) | |
589 | { | |
590 | u32 i; | |
591 | ||
592 | if (!tp) | |
593 | return; | |
594 | ||
595 | for (i = 0 ; i < tp->core_sib; i++) | |
74cf249d | 596 | zfree(&tp->core_siblings[i]); |
fbe96f29 SE |
597 | |
598 | for (i = 0 ; i < tp->thread_sib; i++) | |
74cf249d | 599 | zfree(&tp->thread_siblings[i]); |
fbe96f29 SE |
600 | |
601 | free(tp); | |
602 | } | |
603 | ||
604 | static struct cpu_topo *build_cpu_topology(void) | |
605 | { | |
43db2843 | 606 | struct cpu_topo *tp = NULL; |
fbe96f29 SE |
607 | void *addr; |
608 | u32 nr, i; | |
aa36ddd7 | 609 | size_t sz; |
fbe96f29 SE |
610 | long ncpus; |
611 | int ret = -1; | |
43db2843 | 612 | struct cpu_map *map; |
fbe96f29 | 613 | |
da8a58b5 | 614 | ncpus = cpu__max_present_cpu(); |
fbe96f29 | 615 | |
43db2843 JS |
616 | /* build online CPU map */ |
617 | map = cpu_map__new(NULL); | |
618 | if (map == NULL) { | |
619 | pr_debug("failed to get system cpumap\n"); | |
620 | return NULL; | |
621 | } | |
622 | ||
fbe96f29 SE |
623 | nr = (u32)(ncpus & UINT_MAX); |
624 | ||
625 | sz = nr * sizeof(char *); | |
aa36ddd7 | 626 | addr = calloc(1, sizeof(*tp) + 2 * sz); |
fbe96f29 | 627 | if (!addr) |
43db2843 | 628 | goto out_free; |
fbe96f29 SE |
629 | |
630 | tp = addr; | |
2bb00d2f | 631 | tp->cpu_nr = nr; |
fbe96f29 SE |
632 | addr += sizeof(*tp); |
633 | tp->core_siblings = addr; | |
634 | addr += sz; | |
635 | tp->thread_siblings = addr; | |
636 | ||
637 | for (i = 0; i < nr; i++) { | |
43db2843 JS |
638 | if (!cpu_map__has(map, i)) |
639 | continue; | |
640 | ||
fbe96f29 SE |
641 | ret = build_cpu_topo(tp, i); |
642 | if (ret < 0) | |
643 | break; | |
644 | } | |
43db2843 JS |
645 | |
646 | out_free: | |
647 | cpu_map__put(map); | |
fbe96f29 SE |
648 | if (ret) { |
649 | free_cpu_topo(tp); | |
650 | tp = NULL; | |
651 | } | |
652 | return tp; | |
653 | } | |
654 | ||
ccebbeb6 DCC |
655 | static int write_cpu_topology(struct feat_fd *ff, |
656 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
657 | { |
658 | struct cpu_topo *tp; | |
659 | u32 i; | |
aa36ddd7 | 660 | int ret, j; |
fbe96f29 SE |
661 | |
662 | tp = build_cpu_topology(); | |
663 | if (!tp) | |
664 | return -1; | |
665 | ||
ccebbeb6 | 666 | ret = do_write(ff, &tp->core_sib, sizeof(tp->core_sib)); |
fbe96f29 SE |
667 | if (ret < 0) |
668 | goto done; | |
669 | ||
670 | for (i = 0; i < tp->core_sib; i++) { | |
ccebbeb6 | 671 | ret = do_write_string(ff, tp->core_siblings[i]); |
fbe96f29 SE |
672 | if (ret < 0) |
673 | goto done; | |
674 | } | |
ccebbeb6 | 675 | ret = do_write(ff, &tp->thread_sib, sizeof(tp->thread_sib)); |
fbe96f29 SE |
676 | if (ret < 0) |
677 | goto done; | |
678 | ||
679 | for (i = 0; i < tp->thread_sib; i++) { | |
ccebbeb6 | 680 | ret = do_write_string(ff, tp->thread_siblings[i]); |
fbe96f29 SE |
681 | if (ret < 0) |
682 | break; | |
683 | } | |
2bb00d2f | 684 | |
aa36ddd7 ACM |
685 | ret = perf_env__read_cpu_topology_map(&perf_env); |
686 | if (ret < 0) | |
687 | goto done; | |
688 | ||
689 | for (j = 0; j < perf_env.nr_cpus_avail; j++) { | |
ccebbeb6 | 690 | ret = do_write(ff, &perf_env.cpu[j].core_id, |
aa36ddd7 | 691 | sizeof(perf_env.cpu[j].core_id)); |
2bb00d2f KL |
692 | if (ret < 0) |
693 | return ret; | |
ccebbeb6 | 694 | ret = do_write(ff, &perf_env.cpu[j].socket_id, |
aa36ddd7 | 695 | sizeof(perf_env.cpu[j].socket_id)); |
2bb00d2f KL |
696 | if (ret < 0) |
697 | return ret; | |
698 | } | |
fbe96f29 SE |
699 | done: |
700 | free_cpu_topo(tp); | |
701 | return ret; | |
702 | } | |
703 | ||
704 | ||
705 | ||
ccebbeb6 DCC |
706 | static int write_total_mem(struct feat_fd *ff, |
707 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
708 | { |
709 | char *buf = NULL; | |
710 | FILE *fp; | |
711 | size_t len = 0; | |
712 | int ret = -1, n; | |
713 | uint64_t mem; | |
714 | ||
715 | fp = fopen("/proc/meminfo", "r"); | |
716 | if (!fp) | |
717 | return -1; | |
718 | ||
719 | while (getline(&buf, &len, fp) > 0) { | |
720 | ret = strncmp(buf, "MemTotal:", 9); | |
721 | if (!ret) | |
722 | break; | |
723 | } | |
724 | if (!ret) { | |
725 | n = sscanf(buf, "%*s %"PRIu64, &mem); | |
726 | if (n == 1) | |
ccebbeb6 | 727 | ret = do_write(ff, &mem, sizeof(mem)); |
ed307758 WN |
728 | } else |
729 | ret = -1; | |
fbe96f29 SE |
730 | free(buf); |
731 | fclose(fp); | |
732 | return ret; | |
733 | } | |
734 | ||
ccebbeb6 | 735 | static int write_topo_node(struct feat_fd *ff, int node) |
fbe96f29 SE |
736 | { |
737 | char str[MAXPATHLEN]; | |
738 | char field[32]; | |
739 | char *buf = NULL, *p; | |
740 | size_t len = 0; | |
741 | FILE *fp; | |
742 | u64 mem_total, mem_free, mem; | |
743 | int ret = -1; | |
744 | ||
745 | sprintf(str, "/sys/devices/system/node/node%d/meminfo", node); | |
746 | fp = fopen(str, "r"); | |
747 | if (!fp) | |
748 | return -1; | |
749 | ||
750 | while (getline(&buf, &len, fp) > 0) { | |
751 | /* skip over invalid lines */ | |
752 | if (!strchr(buf, ':')) | |
753 | continue; | |
a761a2d8 | 754 | if (sscanf(buf, "%*s %*d %31s %"PRIu64, field, &mem) != 2) |
fbe96f29 SE |
755 | goto done; |
756 | if (!strcmp(field, "MemTotal:")) | |
757 | mem_total = mem; | |
758 | if (!strcmp(field, "MemFree:")) | |
759 | mem_free = mem; | |
760 | } | |
761 | ||
762 | fclose(fp); | |
5809fde0 | 763 | fp = NULL; |
fbe96f29 | 764 | |
ccebbeb6 | 765 | ret = do_write(ff, &mem_total, sizeof(u64)); |
fbe96f29 SE |
766 | if (ret) |
767 | goto done; | |
768 | ||
ccebbeb6 | 769 | ret = do_write(ff, &mem_free, sizeof(u64)); |
fbe96f29 SE |
770 | if (ret) |
771 | goto done; | |
772 | ||
773 | ret = -1; | |
774 | sprintf(str, "/sys/devices/system/node/node%d/cpulist", node); | |
775 | ||
776 | fp = fopen(str, "r"); | |
777 | if (!fp) | |
778 | goto done; | |
779 | ||
780 | if (getline(&buf, &len, fp) <= 0) | |
781 | goto done; | |
782 | ||
783 | p = strchr(buf, '\n'); | |
784 | if (p) | |
785 | *p = '\0'; | |
786 | ||
ccebbeb6 | 787 | ret = do_write_string(ff, buf); |
fbe96f29 SE |
788 | done: |
789 | free(buf); | |
5809fde0 TJ |
790 | if (fp) |
791 | fclose(fp); | |
fbe96f29 SE |
792 | return ret; |
793 | } | |
794 | ||
ccebbeb6 DCC |
795 | static int write_numa_topology(struct feat_fd *ff, |
796 | struct perf_evlist *evlist __maybe_unused) | |
fbe96f29 SE |
797 | { |
798 | char *buf = NULL; | |
799 | size_t len = 0; | |
800 | FILE *fp; | |
801 | struct cpu_map *node_map = NULL; | |
802 | char *c; | |
803 | u32 nr, i, j; | |
804 | int ret = -1; | |
805 | ||
806 | fp = fopen("/sys/devices/system/node/online", "r"); | |
807 | if (!fp) | |
808 | return -1; | |
809 | ||
810 | if (getline(&buf, &len, fp) <= 0) | |
811 | goto done; | |
812 | ||
813 | c = strchr(buf, '\n'); | |
814 | if (c) | |
815 | *c = '\0'; | |
816 | ||
817 | node_map = cpu_map__new(buf); | |
818 | if (!node_map) | |
819 | goto done; | |
820 | ||
821 | nr = (u32)node_map->nr; | |
822 | ||
ccebbeb6 | 823 | ret = do_write(ff, &nr, sizeof(nr)); |
fbe96f29 SE |
824 | if (ret < 0) |
825 | goto done; | |
826 | ||
827 | for (i = 0; i < nr; i++) { | |
828 | j = (u32)node_map->map[i]; | |
ccebbeb6 | 829 | ret = do_write(ff, &j, sizeof(j)); |
fbe96f29 SE |
830 | if (ret < 0) |
831 | break; | |
832 | ||
ccebbeb6 | 833 | ret = write_topo_node(ff, i); |
fbe96f29 SE |
834 | if (ret < 0) |
835 | break; | |
836 | } | |
837 | done: | |
838 | free(buf); | |
839 | fclose(fp); | |
5191d887 | 840 | cpu_map__put(node_map); |
fbe96f29 SE |
841 | return ret; |
842 | } | |
843 | ||
50a9667c RR |
844 | /* |
845 | * File format: | |
846 | * | |
847 | * struct pmu_mappings { | |
848 | * u32 pmu_num; | |
849 | * struct pmu_map { | |
850 | * u32 type; | |
851 | * char name[]; | |
852 | * }[pmu_num]; | |
853 | * }; | |
854 | */ | |
855 | ||
ccebbeb6 | 856 | static int write_pmu_mappings(struct feat_fd *ff, |
1d037ca1 | 857 | struct perf_evlist *evlist __maybe_unused) |
50a9667c RR |
858 | { |
859 | struct perf_pmu *pmu = NULL; | |
a02c395c | 860 | u32 pmu_num = 0; |
5323f60c | 861 | int ret; |
50a9667c | 862 | |
a02c395c DCC |
863 | /* |
864 | * Do a first pass to count number of pmu to avoid lseek so this | |
865 | * works in pipe mode as well. | |
866 | */ | |
867 | while ((pmu = perf_pmu__scan(pmu))) { | |
868 | if (!pmu->name) | |
869 | continue; | |
870 | pmu_num++; | |
871 | } | |
872 | ||
ccebbeb6 | 873 | ret = do_write(ff, &pmu_num, sizeof(pmu_num)); |
5323f60c NK |
874 | if (ret < 0) |
875 | return ret; | |
50a9667c RR |
876 | |
877 | while ((pmu = perf_pmu__scan(pmu))) { | |
878 | if (!pmu->name) | |
879 | continue; | |
5323f60c | 880 | |
ccebbeb6 | 881 | ret = do_write(ff, &pmu->type, sizeof(pmu->type)); |
5323f60c NK |
882 | if (ret < 0) |
883 | return ret; | |
884 | ||
ccebbeb6 | 885 | ret = do_write_string(ff, pmu->name); |
5323f60c NK |
886 | if (ret < 0) |
887 | return ret; | |
50a9667c RR |
888 | } |
889 | ||
50a9667c RR |
890 | return 0; |
891 | } | |
892 | ||
a8bb559b NK |
893 | /* |
894 | * File format: | |
895 | * | |
896 | * struct group_descs { | |
897 | * u32 nr_groups; | |
898 | * struct group_desc { | |
899 | * char name[]; | |
900 | * u32 leader_idx; | |
901 | * u32 nr_members; | |
902 | * }[nr_groups]; | |
903 | * }; | |
904 | */ | |
ccebbeb6 | 905 | static int write_group_desc(struct feat_fd *ff, |
a8bb559b NK |
906 | struct perf_evlist *evlist) |
907 | { | |
908 | u32 nr_groups = evlist->nr_groups; | |
909 | struct perf_evsel *evsel; | |
910 | int ret; | |
911 | ||
ccebbeb6 | 912 | ret = do_write(ff, &nr_groups, sizeof(nr_groups)); |
a8bb559b NK |
913 | if (ret < 0) |
914 | return ret; | |
915 | ||
e5cadb93 | 916 | evlist__for_each_entry(evlist, evsel) { |
a8bb559b NK |
917 | if (perf_evsel__is_group_leader(evsel) && |
918 | evsel->nr_members > 1) { | |
919 | const char *name = evsel->group_name ?: "{anon_group}"; | |
920 | u32 leader_idx = evsel->idx; | |
921 | u32 nr_members = evsel->nr_members; | |
922 | ||
ccebbeb6 | 923 | ret = do_write_string(ff, name); |
a8bb559b NK |
924 | if (ret < 0) |
925 | return ret; | |
926 | ||
ccebbeb6 | 927 | ret = do_write(ff, &leader_idx, sizeof(leader_idx)); |
a8bb559b NK |
928 | if (ret < 0) |
929 | return ret; | |
930 | ||
ccebbeb6 | 931 | ret = do_write(ff, &nr_members, sizeof(nr_members)); |
a8bb559b NK |
932 | if (ret < 0) |
933 | return ret; | |
934 | } | |
935 | } | |
936 | return 0; | |
937 | } | |
938 | ||
fbe96f29 SE |
939 | /* |
940 | * default get_cpuid(): nothing gets recorded | |
7a759cd8 | 941 | * actual implementation must be in arch/$(SRCARCH)/util/header.c |
fbe96f29 | 942 | */ |
11d8f870 | 943 | int __weak get_cpuid(char *buffer __maybe_unused, size_t sz __maybe_unused) |
fbe96f29 SE |
944 | { |
945 | return -1; | |
946 | } | |
947 | ||
ccebbeb6 | 948 | static int write_cpuid(struct feat_fd *ff, |
1d037ca1 | 949 | struct perf_evlist *evlist __maybe_unused) |
fbe96f29 SE |
950 | { |
951 | char buffer[64]; | |
952 | int ret; | |
953 | ||
954 | ret = get_cpuid(buffer, sizeof(buffer)); | |
955 | if (!ret) | |
956 | goto write_it; | |
957 | ||
958 | return -1; | |
959 | write_it: | |
ccebbeb6 | 960 | return do_write_string(ff, buffer); |
fbe96f29 SE |
961 | } |
962 | ||
ccebbeb6 DCC |
963 | static int write_branch_stack(struct feat_fd *ff __maybe_unused, |
964 | struct perf_evlist *evlist __maybe_unused) | |
330aa675 SE |
965 | { |
966 | return 0; | |
967 | } | |
968 | ||
ccebbeb6 | 969 | static int write_auxtrace(struct feat_fd *ff, |
4025ea40 AH |
970 | struct perf_evlist *evlist __maybe_unused) |
971 | { | |
99fa2984 AH |
972 | struct perf_session *session; |
973 | int err; | |
974 | ||
0b3d3410 DCC |
975 | if (WARN(ff->buf, "Error: calling %s in pipe-mode.\n", __func__)) |
976 | return -1; | |
977 | ||
ccebbeb6 | 978 | session = container_of(ff->ph, struct perf_session, header); |
99fa2984 | 979 | |
ccebbeb6 | 980 | err = auxtrace_index__write(ff->fd, &session->auxtrace_index); |
99fa2984 AH |
981 | if (err < 0) |
982 | pr_err("Failed to write auxtrace index\n"); | |
983 | return err; | |
4025ea40 AH |
984 | } |
985 | ||
720e98b5 JO |
986 | static int cpu_cache_level__sort(const void *a, const void *b) |
987 | { | |
988 | struct cpu_cache_level *cache_a = (struct cpu_cache_level *)a; | |
989 | struct cpu_cache_level *cache_b = (struct cpu_cache_level *)b; | |
990 | ||
991 | return cache_a->level - cache_b->level; | |
992 | } | |
993 | ||
994 | static bool cpu_cache_level__cmp(struct cpu_cache_level *a, struct cpu_cache_level *b) | |
995 | { | |
996 | if (a->level != b->level) | |
997 | return false; | |
998 | ||
999 | if (a->line_size != b->line_size) | |
1000 | return false; | |
1001 | ||
1002 | if (a->sets != b->sets) | |
1003 | return false; | |
1004 | ||
1005 | if (a->ways != b->ways) | |
1006 | return false; | |
1007 | ||
1008 | if (strcmp(a->type, b->type)) | |
1009 | return false; | |
1010 | ||
1011 | if (strcmp(a->size, b->size)) | |
1012 | return false; | |
1013 | ||
1014 | if (strcmp(a->map, b->map)) | |
1015 | return false; | |
1016 | ||
1017 | return true; | |
1018 | } | |
1019 | ||
1020 | static int cpu_cache_level__read(struct cpu_cache_level *cache, u32 cpu, u16 level) | |
1021 | { | |
1022 | char path[PATH_MAX], file[PATH_MAX]; | |
1023 | struct stat st; | |
1024 | size_t len; | |
1025 | ||
1026 | scnprintf(path, PATH_MAX, "devices/system/cpu/cpu%d/cache/index%d/", cpu, level); | |
1027 | scnprintf(file, PATH_MAX, "%s/%s", sysfs__mountpoint(), path); | |
1028 | ||
1029 | if (stat(file, &st)) | |
1030 | return 1; | |
1031 | ||
1032 | scnprintf(file, PATH_MAX, "%s/level", path); | |
1033 | if (sysfs__read_int(file, (int *) &cache->level)) | |
1034 | return -1; | |
1035 | ||
1036 | scnprintf(file, PATH_MAX, "%s/coherency_line_size", path); | |
1037 | if (sysfs__read_int(file, (int *) &cache->line_size)) | |
1038 | return -1; | |
1039 | ||
1040 | scnprintf(file, PATH_MAX, "%s/number_of_sets", path); | |
1041 | if (sysfs__read_int(file, (int *) &cache->sets)) | |
1042 | return -1; | |
1043 | ||
1044 | scnprintf(file, PATH_MAX, "%s/ways_of_associativity", path); | |
1045 | if (sysfs__read_int(file, (int *) &cache->ways)) | |
1046 | return -1; | |
1047 | ||
1048 | scnprintf(file, PATH_MAX, "%s/type", path); | |
1049 | if (sysfs__read_str(file, &cache->type, &len)) | |
1050 | return -1; | |
1051 | ||
1052 | cache->type[len] = 0; | |
1053 | cache->type = rtrim(cache->type); | |
1054 | ||
1055 | scnprintf(file, PATH_MAX, "%s/size", path); | |
1056 | if (sysfs__read_str(file, &cache->size, &len)) { | |
1057 | free(cache->type); | |
1058 | return -1; | |
1059 | } | |
1060 | ||
1061 | cache->size[len] = 0; | |
1062 | cache->size = rtrim(cache->size); | |
1063 | ||
1064 | scnprintf(file, PATH_MAX, "%s/shared_cpu_list", path); | |
1065 | if (sysfs__read_str(file, &cache->map, &len)) { | |
1066 | free(cache->map); | |
1067 | free(cache->type); | |
1068 | return -1; | |
1069 | } | |
1070 | ||
1071 | cache->map[len] = 0; | |
1072 | cache->map = rtrim(cache->map); | |
1073 | return 0; | |
1074 | } | |
1075 | ||
1076 | static void cpu_cache_level__fprintf(FILE *out, struct cpu_cache_level *c) | |
1077 | { | |
1078 | fprintf(out, "L%d %-15s %8s [%s]\n", c->level, c->type, c->size, c->map); | |
1079 | } | |
1080 | ||
1081 | static int build_caches(struct cpu_cache_level caches[], u32 size, u32 *cntp) | |
1082 | { | |
1083 | u32 i, cnt = 0; | |
1084 | long ncpus; | |
1085 | u32 nr, cpu; | |
1086 | u16 level; | |
1087 | ||
1088 | ncpus = sysconf(_SC_NPROCESSORS_CONF); | |
1089 | if (ncpus < 0) | |
1090 | return -1; | |
1091 | ||
1092 | nr = (u32)(ncpus & UINT_MAX); | |
1093 | ||
1094 | for (cpu = 0; cpu < nr; cpu++) { | |
1095 | for (level = 0; level < 10; level++) { | |
1096 | struct cpu_cache_level c; | |
1097 | int err; | |
1098 | ||
1099 | err = cpu_cache_level__read(&c, cpu, level); | |
1100 | if (err < 0) | |
1101 | return err; | |
1102 | ||
1103 | if (err == 1) | |
1104 | break; | |
1105 | ||
1106 | for (i = 0; i < cnt; i++) { | |
1107 | if (cpu_cache_level__cmp(&c, &caches[i])) | |
1108 | break; | |
1109 | } | |
1110 | ||
1111 | if (i == cnt) | |
1112 | caches[cnt++] = c; | |
1113 | else | |
1114 | cpu_cache_level__free(&c); | |
1115 | ||
1116 | if (WARN_ONCE(cnt == size, "way too many cpu caches..")) | |
1117 | goto out; | |
1118 | } | |
1119 | } | |
1120 | out: | |
1121 | *cntp = cnt; | |
1122 | return 0; | |
1123 | } | |
1124 | ||
1125 | #define MAX_CACHES 2000 | |
1126 | ||
ccebbeb6 DCC |
1127 | static int write_cache(struct feat_fd *ff, |
1128 | struct perf_evlist *evlist __maybe_unused) | |
720e98b5 JO |
1129 | { |
1130 | struct cpu_cache_level caches[MAX_CACHES]; | |
1131 | u32 cnt = 0, i, version = 1; | |
1132 | int ret; | |
1133 | ||
1134 | ret = build_caches(caches, MAX_CACHES, &cnt); | |
1135 | if (ret) | |
1136 | goto out; | |
1137 | ||
1138 | qsort(&caches, cnt, sizeof(struct cpu_cache_level), cpu_cache_level__sort); | |
1139 | ||
ccebbeb6 | 1140 | ret = do_write(ff, &version, sizeof(u32)); |
720e98b5 JO |
1141 | if (ret < 0) |
1142 | goto out; | |
1143 | ||
ccebbeb6 | 1144 | ret = do_write(ff, &cnt, sizeof(u32)); |
720e98b5 JO |
1145 | if (ret < 0) |
1146 | goto out; | |
1147 | ||
1148 | for (i = 0; i < cnt; i++) { | |
1149 | struct cpu_cache_level *c = &caches[i]; | |
1150 | ||
1151 | #define _W(v) \ | |
ccebbeb6 | 1152 | ret = do_write(ff, &c->v, sizeof(u32)); \ |
720e98b5 JO |
1153 | if (ret < 0) \ |
1154 | goto out; | |
1155 | ||
1156 | _W(level) | |
1157 | _W(line_size) | |
1158 | _W(sets) | |
1159 | _W(ways) | |
1160 | #undef _W | |
1161 | ||
1162 | #define _W(v) \ | |
ccebbeb6 | 1163 | ret = do_write_string(ff, (const char *) c->v); \ |
720e98b5 JO |
1164 | if (ret < 0) \ |
1165 | goto out; | |
1166 | ||
1167 | _W(type) | |
1168 | _W(size) | |
1169 | _W(map) | |
1170 | #undef _W | |
1171 | } | |
1172 | ||
1173 | out: | |
1174 | for (i = 0; i < cnt; i++) | |
1175 | cpu_cache_level__free(&caches[i]); | |
1176 | return ret; | |
1177 | } | |
1178 | ||
ccebbeb6 | 1179 | static int write_stat(struct feat_fd *ff __maybe_unused, |
ffa517ad JO |
1180 | struct perf_evlist *evlist __maybe_unused) |
1181 | { | |
1182 | return 0; | |
1183 | } | |
1184 | ||
cfc65420 | 1185 | static void print_hostname(struct feat_fd *ff, FILE *fp) |
fbe96f29 | 1186 | { |
cfc65420 | 1187 | fprintf(fp, "# hostname : %s\n", ff->ph->env.hostname); |
fbe96f29 SE |
1188 | } |
1189 | ||
cfc65420 | 1190 | static void print_osrelease(struct feat_fd *ff, FILE *fp) |
fbe96f29 | 1191 | { |
cfc65420 | 1192 | fprintf(fp, "# os release : %s\n", ff->ph->env.os_release); |
fbe96f29 SE |
1193 | } |
1194 | ||
cfc65420 | 1195 | static void print_arch(struct feat_fd *ff, FILE *fp) |
fbe96f29 | 1196 | { |
cfc65420 | 1197 | fprintf(fp, "# arch : %s\n", ff->ph->env.arch); |
fbe96f29 SE |
1198 | } |
1199 | ||
cfc65420 | 1200 | static void print_cpudesc(struct feat_fd *ff, FILE *fp) |
fbe96f29 | 1201 | { |
cfc65420 | 1202 | fprintf(fp, "# cpudesc : %s\n", ff->ph->env.cpu_desc); |
fbe96f29 SE |
1203 | } |
1204 | ||
cfc65420 | 1205 | static void print_nrcpus(struct feat_fd *ff, FILE *fp) |
fbe96f29 | 1206 | { |
cfc65420 DCC |
1207 | fprintf(fp, "# nrcpus online : %u\n", ff->ph->env.nr_cpus_online); |
1208 | fprintf(fp, "# nrcpus avail : %u\n", ff->ph->env.nr_cpus_avail); | |
fbe96f29 SE |
1209 | } |
1210 | ||
cfc65420 | 1211 | static void print_version(struct feat_fd *ff, FILE *fp) |
fbe96f29 | 1212 | { |
cfc65420 | 1213 | fprintf(fp, "# perf version : %s\n", ff->ph->env.version); |
fbe96f29 SE |
1214 | } |
1215 | ||
cfc65420 | 1216 | static void print_cmdline(struct feat_fd *ff, FILE *fp) |
fbe96f29 | 1217 | { |
7e94cfcc | 1218 | int nr, i; |
fbe96f29 | 1219 | |
cfc65420 | 1220 | nr = ff->ph->env.nr_cmdline; |
fbe96f29 SE |
1221 | |
1222 | fprintf(fp, "# cmdline : "); | |
1223 | ||
768dd3f3 | 1224 | for (i = 0; i < nr; i++) |
cfc65420 | 1225 | fprintf(fp, "%s ", ff->ph->env.cmdline_argv[i]); |
fbe96f29 SE |
1226 | fputc('\n', fp); |
1227 | } | |
1228 | ||
cfc65420 | 1229 | static void print_cpu_topology(struct feat_fd *ff, FILE *fp) |
fbe96f29 | 1230 | { |
cfc65420 DCC |
1231 | struct perf_header *ph = ff->ph; |
1232 | int cpu_nr = ph->env.nr_cpus_avail; | |
7e94cfcc | 1233 | int nr, i; |
fbe96f29 SE |
1234 | char *str; |
1235 | ||
7e94cfcc NK |
1236 | nr = ph->env.nr_sibling_cores; |
1237 | str = ph->env.sibling_cores; | |
fbe96f29 SE |
1238 | |
1239 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 1240 | fprintf(fp, "# sibling cores : %s\n", str); |
7e94cfcc | 1241 | str += strlen(str) + 1; |
fbe96f29 SE |
1242 | } |
1243 | ||
7e94cfcc NK |
1244 | nr = ph->env.nr_sibling_threads; |
1245 | str = ph->env.sibling_threads; | |
fbe96f29 SE |
1246 | |
1247 | for (i = 0; i < nr; i++) { | |
fbe96f29 | 1248 | fprintf(fp, "# sibling threads : %s\n", str); |
7e94cfcc | 1249 | str += strlen(str) + 1; |
fbe96f29 | 1250 | } |
2bb00d2f KL |
1251 | |
1252 | if (ph->env.cpu != NULL) { | |
1253 | for (i = 0; i < cpu_nr; i++) | |
1254 | fprintf(fp, "# CPU %d: Core ID %d, Socket ID %d\n", i, | |
1255 | ph->env.cpu[i].core_id, ph->env.cpu[i].socket_id); | |
1256 | } else | |
1257 | fprintf(fp, "# Core ID and Socket ID information is not available\n"); | |
fbe96f29 SE |
1258 | } |
1259 | ||
4e1b9c67 | 1260 | static void free_event_desc(struct perf_evsel *events) |
fbe96f29 | 1261 | { |
4e1b9c67 RR |
1262 | struct perf_evsel *evsel; |
1263 | ||
1264 | if (!events) | |
1265 | return; | |
1266 | ||
1267 | for (evsel = events; evsel->attr.size; evsel++) { | |
74cf249d ACM |
1268 | zfree(&evsel->name); |
1269 | zfree(&evsel->id); | |
4e1b9c67 RR |
1270 | } |
1271 | ||
1272 | free(events); | |
1273 | } | |
1274 | ||
48e5fcea | 1275 | static struct perf_evsel *read_event_desc(struct feat_fd *ff) |
4e1b9c67 RR |
1276 | { |
1277 | struct perf_evsel *evsel, *events = NULL; | |
1278 | u64 *id; | |
fbe96f29 | 1279 | void *buf = NULL; |
62db9068 | 1280 | u32 nre, sz, nr, i, j; |
62db9068 | 1281 | size_t msz; |
fbe96f29 SE |
1282 | |
1283 | /* number of events */ | |
48e5fcea | 1284 | if (do_read_u32(ff, &nre)) |
fbe96f29 SE |
1285 | goto error; |
1286 | ||
48e5fcea | 1287 | if (do_read_u32(ff, &sz)) |
fbe96f29 SE |
1288 | goto error; |
1289 | ||
62db9068 | 1290 | /* buffer to hold on file attr struct */ |
fbe96f29 SE |
1291 | buf = malloc(sz); |
1292 | if (!buf) | |
1293 | goto error; | |
1294 | ||
4e1b9c67 RR |
1295 | /* the last event terminates with evsel->attr.size == 0: */ |
1296 | events = calloc(nre + 1, sizeof(*events)); | |
1297 | if (!events) | |
1298 | goto error; | |
1299 | ||
1300 | msz = sizeof(evsel->attr); | |
9fafd98f | 1301 | if (sz < msz) |
fbe96f29 SE |
1302 | msz = sz; |
1303 | ||
4e1b9c67 RR |
1304 | for (i = 0, evsel = events; i < nre; evsel++, i++) { |
1305 | evsel->idx = i; | |
fbe96f29 | 1306 | |
62db9068 SE |
1307 | /* |
1308 | * must read entire on-file attr struct to | |
1309 | * sync up with layout. | |
1310 | */ | |
48e5fcea | 1311 | if (__do_read(ff, buf, sz)) |
fbe96f29 SE |
1312 | goto error; |
1313 | ||
48e5fcea | 1314 | if (ff->ph->needs_swap) |
fbe96f29 SE |
1315 | perf_event__attr_swap(buf); |
1316 | ||
4e1b9c67 | 1317 | memcpy(&evsel->attr, buf, msz); |
fbe96f29 | 1318 | |
48e5fcea | 1319 | if (do_read_u32(ff, &nr)) |
fbe96f29 SE |
1320 | goto error; |
1321 | ||
48e5fcea | 1322 | if (ff->ph->needs_swap) |
0807d2d8 | 1323 | evsel->needs_swap = true; |
fbe96f29 | 1324 | |
48e5fcea | 1325 | evsel->name = do_read_string(ff); |
6200e494 DCC |
1326 | if (!evsel->name) |
1327 | goto error; | |
4e1b9c67 RR |
1328 | |
1329 | if (!nr) | |
1330 | continue; | |
1331 | ||
1332 | id = calloc(nr, sizeof(*id)); | |
1333 | if (!id) | |
1334 | goto error; | |
1335 | evsel->ids = nr; | |
1336 | evsel->id = id; | |
1337 | ||
1338 | for (j = 0 ; j < nr; j++) { | |
48e5fcea | 1339 | if (do_read_u64(ff, id)) |
4e1b9c67 | 1340 | goto error; |
4e1b9c67 RR |
1341 | id++; |
1342 | } | |
1343 | } | |
1344 | out: | |
04662523 | 1345 | free(buf); |
4e1b9c67 RR |
1346 | return events; |
1347 | error: | |
4cc97614 | 1348 | free_event_desc(events); |
4e1b9c67 RR |
1349 | events = NULL; |
1350 | goto out; | |
1351 | } | |
1352 | ||
2c5e8c52 | 1353 | static int __desc_attr__fprintf(FILE *fp, const char *name, const char *val, |
0353631a | 1354 | void *priv __maybe_unused) |
2c5e8c52 PZ |
1355 | { |
1356 | return fprintf(fp, ", %s = %s", name, val); | |
1357 | } | |
1358 | ||
cfc65420 | 1359 | static void print_event_desc(struct feat_fd *ff, FILE *fp) |
4e1b9c67 | 1360 | { |
f9ebdccf | 1361 | struct perf_evsel *evsel, *events; |
4e1b9c67 RR |
1362 | u32 j; |
1363 | u64 *id; | |
1364 | ||
f9ebdccf DCC |
1365 | if (ff->events) |
1366 | events = ff->events; | |
1367 | else | |
1368 | events = read_event_desc(ff); | |
1369 | ||
4e1b9c67 RR |
1370 | if (!events) { |
1371 | fprintf(fp, "# event desc: not available or unable to read\n"); | |
1372 | return; | |
1373 | } | |
1374 | ||
1375 | for (evsel = events; evsel->attr.size; evsel++) { | |
1376 | fprintf(fp, "# event : name = %s, ", evsel->name); | |
fbe96f29 | 1377 | |
4e1b9c67 | 1378 | if (evsel->ids) { |
fbe96f29 | 1379 | fprintf(fp, ", id = {"); |
4e1b9c67 RR |
1380 | for (j = 0, id = evsel->id; j < evsel->ids; j++, id++) { |
1381 | if (j) | |
1382 | fputc(',', fp); | |
1383 | fprintf(fp, " %"PRIu64, *id); | |
1384 | } | |
fbe96f29 | 1385 | fprintf(fp, " }"); |
4e1b9c67 | 1386 | } |
814c8c38 | 1387 | |
2c5e8c52 | 1388 | perf_event_attr__fprintf(fp, &evsel->attr, __desc_attr__fprintf, NULL); |
4e1b9c67 | 1389 | |
fbe96f29 SE |
1390 | fputc('\n', fp); |
1391 | } | |
4e1b9c67 RR |
1392 | |
1393 | free_event_desc(events); | |
f9ebdccf | 1394 | ff->events = NULL; |
fbe96f29 SE |
1395 | } |
1396 | ||
cfc65420 | 1397 | static void print_total_mem(struct feat_fd *ff, FILE *fp) |
fbe96f29 | 1398 | { |
cfc65420 | 1399 | fprintf(fp, "# total memory : %llu kB\n", ff->ph->env.total_mem); |
fbe96f29 SE |
1400 | } |
1401 | ||
cfc65420 | 1402 | static void print_numa_topology(struct feat_fd *ff, FILE *fp) |
fbe96f29 | 1403 | { |
c60da22a JO |
1404 | int i; |
1405 | struct numa_node *n; | |
fbe96f29 | 1406 | |
cfc65420 DCC |
1407 | for (i = 0; i < ff->ph->env.nr_numa_nodes; i++) { |
1408 | n = &ff->ph->env.numa_nodes[i]; | |
fbe96f29 | 1409 | |
fbe96f29 SE |
1410 | fprintf(fp, "# node%u meminfo : total = %"PRIu64" kB," |
1411 | " free = %"PRIu64" kB\n", | |
c60da22a | 1412 | n->node, n->mem_total, n->mem_free); |
1234471e | 1413 | |
c60da22a JO |
1414 | fprintf(fp, "# node%u cpu list : ", n->node); |
1415 | cpu_map__fprintf(n->map, fp); | |
fbe96f29 | 1416 | } |
fbe96f29 SE |
1417 | } |
1418 | ||
cfc65420 | 1419 | static void print_cpuid(struct feat_fd *ff, FILE *fp) |
fbe96f29 | 1420 | { |
cfc65420 | 1421 | fprintf(fp, "# cpuid : %s\n", ff->ph->env.cpuid); |
fbe96f29 SE |
1422 | } |
1423 | ||
cfc65420 | 1424 | static void print_branch_stack(struct feat_fd *ff __maybe_unused, FILE *fp) |
330aa675 SE |
1425 | { |
1426 | fprintf(fp, "# contains samples with branch stack\n"); | |
1427 | } | |
1428 | ||
cfc65420 | 1429 | static void print_auxtrace(struct feat_fd *ff __maybe_unused, FILE *fp) |
4025ea40 AH |
1430 | { |
1431 | fprintf(fp, "# contains AUX area data (e.g. instruction trace)\n"); | |
1432 | } | |
1433 | ||
cfc65420 | 1434 | static void print_stat(struct feat_fd *ff __maybe_unused, FILE *fp) |
ffa517ad JO |
1435 | { |
1436 | fprintf(fp, "# contains stat data\n"); | |
1437 | } | |
1438 | ||
cfc65420 | 1439 | static void print_cache(struct feat_fd *ff, FILE *fp __maybe_unused) |
720e98b5 JO |
1440 | { |
1441 | int i; | |
1442 | ||
1443 | fprintf(fp, "# CPU cache info:\n"); | |
cfc65420 | 1444 | for (i = 0; i < ff->ph->env.caches_cnt; i++) { |
720e98b5 | 1445 | fprintf(fp, "# "); |
cfc65420 | 1446 | cpu_cache_level__fprintf(fp, &ff->ph->env.caches[i]); |
720e98b5 JO |
1447 | } |
1448 | } | |
1449 | ||
cfc65420 | 1450 | static void print_pmu_mappings(struct feat_fd *ff, FILE *fp) |
50a9667c RR |
1451 | { |
1452 | const char *delimiter = "# pmu mappings: "; | |
7e94cfcc | 1453 | char *str, *tmp; |
50a9667c RR |
1454 | u32 pmu_num; |
1455 | u32 type; | |
1456 | ||
cfc65420 | 1457 | pmu_num = ff->ph->env.nr_pmu_mappings; |
50a9667c RR |
1458 | if (!pmu_num) { |
1459 | fprintf(fp, "# pmu mappings: not available\n"); | |
1460 | return; | |
1461 | } | |
1462 | ||
cfc65420 | 1463 | str = ff->ph->env.pmu_mappings; |
7e94cfcc | 1464 | |
50a9667c | 1465 | while (pmu_num) { |
7e94cfcc NK |
1466 | type = strtoul(str, &tmp, 0); |
1467 | if (*tmp != ':') | |
1468 | goto error; | |
1469 | ||
1470 | str = tmp + 1; | |
1471 | fprintf(fp, "%s%s = %" PRIu32, delimiter, str, type); | |
be4a2ded | 1472 | |
50a9667c | 1473 | delimiter = ", "; |
7e94cfcc NK |
1474 | str += strlen(str) + 1; |
1475 | pmu_num--; | |
50a9667c RR |
1476 | } |
1477 | ||
1478 | fprintf(fp, "\n"); | |
1479 | ||
1480 | if (!pmu_num) | |
1481 | return; | |
1482 | error: | |
1483 | fprintf(fp, "# pmu mappings: unable to read\n"); | |
1484 | } | |
1485 | ||
cfc65420 | 1486 | static void print_group_desc(struct feat_fd *ff, FILE *fp) |
a8bb559b NK |
1487 | { |
1488 | struct perf_session *session; | |
1489 | struct perf_evsel *evsel; | |
1490 | u32 nr = 0; | |
1491 | ||
cfc65420 | 1492 | session = container_of(ff->ph, struct perf_session, header); |
a8bb559b | 1493 | |
e5cadb93 | 1494 | evlist__for_each_entry(session->evlist, evsel) { |
a8bb559b NK |
1495 | if (perf_evsel__is_group_leader(evsel) && |
1496 | evsel->nr_members > 1) { | |
1497 | fprintf(fp, "# group: %s{%s", evsel->group_name ?: "", | |
1498 | perf_evsel__name(evsel)); | |
1499 | ||
1500 | nr = evsel->nr_members - 1; | |
1501 | } else if (nr) { | |
1502 | fprintf(fp, ",%s", perf_evsel__name(evsel)); | |
1503 | ||
1504 | if (--nr == 0) | |
1505 | fprintf(fp, "}\n"); | |
1506 | } | |
1507 | } | |
1508 | } | |
1509 | ||
08d95bd2 RR |
1510 | static int __event_process_build_id(struct build_id_event *bev, |
1511 | char *filename, | |
1512 | struct perf_session *session) | |
1513 | { | |
1514 | int err = -1; | |
08d95bd2 | 1515 | struct machine *machine; |
1f121b03 | 1516 | u16 cpumode; |
08d95bd2 RR |
1517 | struct dso *dso; |
1518 | enum dso_kernel_type dso_type; | |
1519 | ||
1520 | machine = perf_session__findnew_machine(session, bev->pid); | |
1521 | if (!machine) | |
1522 | goto out; | |
1523 | ||
1f121b03 | 1524 | cpumode = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
08d95bd2 | 1525 | |
1f121b03 | 1526 | switch (cpumode) { |
08d95bd2 RR |
1527 | case PERF_RECORD_MISC_KERNEL: |
1528 | dso_type = DSO_TYPE_KERNEL; | |
08d95bd2 RR |
1529 | break; |
1530 | case PERF_RECORD_MISC_GUEST_KERNEL: | |
1531 | dso_type = DSO_TYPE_GUEST_KERNEL; | |
08d95bd2 RR |
1532 | break; |
1533 | case PERF_RECORD_MISC_USER: | |
1534 | case PERF_RECORD_MISC_GUEST_USER: | |
1535 | dso_type = DSO_TYPE_USER; | |
08d95bd2 RR |
1536 | break; |
1537 | default: | |
1538 | goto out; | |
1539 | } | |
1540 | ||
aa7cc2ae | 1541 | dso = machine__findnew_dso(machine, filename); |
08d95bd2 | 1542 | if (dso != NULL) { |
b5d8bbe8 | 1543 | char sbuild_id[SBUILD_ID_SIZE]; |
08d95bd2 RR |
1544 | |
1545 | dso__set_build_id(dso, &bev->build_id); | |
1546 | ||
1deec1bd NK |
1547 | if (dso_type != DSO_TYPE_USER) { |
1548 | struct kmod_path m = { .name = NULL, }; | |
1549 | ||
1550 | if (!kmod_path__parse_name(&m, filename) && m.kmod) | |
6b335e8f | 1551 | dso__set_module_info(dso, &m, machine); |
1deec1bd NK |
1552 | else |
1553 | dso->kernel = dso_type; | |
1554 | ||
1555 | free(m.name); | |
1556 | } | |
08d95bd2 RR |
1557 | |
1558 | build_id__sprintf(dso->build_id, sizeof(dso->build_id), | |
1559 | sbuild_id); | |
1560 | pr_debug("build id event received for %s: %s\n", | |
1561 | dso->long_name, sbuild_id); | |
d3a7c489 | 1562 | dso__put(dso); |
08d95bd2 RR |
1563 | } |
1564 | ||
1565 | err = 0; | |
1566 | out: | |
1567 | return err; | |
1568 | } | |
1569 | ||
1570 | static int perf_header__read_build_ids_abi_quirk(struct perf_header *header, | |
1571 | int input, u64 offset, u64 size) | |
1572 | { | |
1573 | struct perf_session *session = container_of(header, struct perf_session, header); | |
1574 | struct { | |
1575 | struct perf_event_header header; | |
9ac3e487 | 1576 | u8 build_id[PERF_ALIGN(BUILD_ID_SIZE, sizeof(u64))]; |
08d95bd2 RR |
1577 | char filename[0]; |
1578 | } old_bev; | |
1579 | struct build_id_event bev; | |
1580 | char filename[PATH_MAX]; | |
1581 | u64 limit = offset + size; | |
1582 | ||
1583 | while (offset < limit) { | |
1584 | ssize_t len; | |
1585 | ||
5323f60c | 1586 | if (readn(input, &old_bev, sizeof(old_bev)) != sizeof(old_bev)) |
08d95bd2 RR |
1587 | return -1; |
1588 | ||
1589 | if (header->needs_swap) | |
1590 | perf_event_header__bswap(&old_bev.header); | |
1591 | ||
1592 | len = old_bev.header.size - sizeof(old_bev); | |
5323f60c | 1593 | if (readn(input, filename, len) != len) |
08d95bd2 RR |
1594 | return -1; |
1595 | ||
1596 | bev.header = old_bev.header; | |
1597 | ||
1598 | /* | |
1599 | * As the pid is the missing value, we need to fill | |
1600 | * it properly. The header.misc value give us nice hint. | |
1601 | */ | |
1602 | bev.pid = HOST_KERNEL_ID; | |
1603 | if (bev.header.misc == PERF_RECORD_MISC_GUEST_USER || | |
1604 | bev.header.misc == PERF_RECORD_MISC_GUEST_KERNEL) | |
1605 | bev.pid = DEFAULT_GUEST_KERNEL_ID; | |
1606 | ||
1607 | memcpy(bev.build_id, old_bev.build_id, sizeof(bev.build_id)); | |
1608 | __event_process_build_id(&bev, filename, session); | |
1609 | ||
1610 | offset += bev.header.size; | |
1611 | } | |
1612 | ||
1613 | return 0; | |
1614 | } | |
1615 | ||
1616 | static int perf_header__read_build_ids(struct perf_header *header, | |
1617 | int input, u64 offset, u64 size) | |
1618 | { | |
1619 | struct perf_session *session = container_of(header, struct perf_session, header); | |
1620 | struct build_id_event bev; | |
1621 | char filename[PATH_MAX]; | |
1622 | u64 limit = offset + size, orig_offset = offset; | |
1623 | int err = -1; | |
1624 | ||
1625 | while (offset < limit) { | |
1626 | ssize_t len; | |
1627 | ||
5323f60c | 1628 | if (readn(input, &bev, sizeof(bev)) != sizeof(bev)) |
08d95bd2 RR |
1629 | goto out; |
1630 | ||
1631 | if (header->needs_swap) | |
1632 | perf_event_header__bswap(&bev.header); | |
1633 | ||
1634 | len = bev.header.size - sizeof(bev); | |
5323f60c | 1635 | if (readn(input, filename, len) != len) |
08d95bd2 RR |
1636 | goto out; |
1637 | /* | |
1638 | * The a1645ce1 changeset: | |
1639 | * | |
1640 | * "perf: 'perf kvm' tool for monitoring guest performance from host" | |
1641 | * | |
1642 | * Added a field to struct build_id_event that broke the file | |
1643 | * format. | |
1644 | * | |
1645 | * Since the kernel build-id is the first entry, process the | |
1646 | * table using the old format if the well known | |
1647 | * '[kernel.kallsyms]' string for the kernel build-id has the | |
1648 | * first 4 characters chopped off (where the pid_t sits). | |
1649 | */ | |
1650 | if (memcmp(filename, "nel.kallsyms]", 13) == 0) { | |
1651 | if (lseek(input, orig_offset, SEEK_SET) == (off_t)-1) | |
1652 | return -1; | |
1653 | return perf_header__read_build_ids_abi_quirk(header, input, offset, size); | |
1654 | } | |
1655 | ||
1656 | __event_process_build_id(&bev, filename, session); | |
1657 | ||
1658 | offset += bev.header.size; | |
1659 | } | |
1660 | err = 0; | |
1661 | out: | |
1662 | return err; | |
1663 | } | |
1664 | ||
dfaa1580 DCC |
1665 | /* Macro for features that simply need to read and store a string. */ |
1666 | #define FEAT_PROCESS_STR_FUN(__feat, __feat_env) \ | |
62552457 | 1667 | static int process_##__feat(struct feat_fd *ff, void *data __maybe_unused) \ |
dfaa1580 | 1668 | {\ |
48e5fcea | 1669 | ff->ph->env.__feat_env = do_read_string(ff); \ |
1a222754 | 1670 | return ff->ph->env.__feat_env ? 0 : -ENOMEM; \ |
dfaa1580 DCC |
1671 | } |
1672 | ||
1673 | FEAT_PROCESS_STR_FUN(hostname, hostname); | |
1674 | FEAT_PROCESS_STR_FUN(osrelease, os_release); | |
1675 | FEAT_PROCESS_STR_FUN(version, version); | |
1676 | FEAT_PROCESS_STR_FUN(arch, arch); | |
1677 | FEAT_PROCESS_STR_FUN(cpudesc, cpu_desc); | |
1678 | FEAT_PROCESS_STR_FUN(cpuid, cpuid); | |
1679 | ||
62552457 | 1680 | static int process_tracing_data(struct feat_fd *ff, void *data) |
f1c67db7 | 1681 | { |
1a222754 DCC |
1682 | ssize_t ret = trace_report(ff->fd, data, false); |
1683 | ||
3dce2ce3 | 1684 | return ret < 0 ? -1 : 0; |
f1c67db7 RR |
1685 | } |
1686 | ||
62552457 | 1687 | static int process_build_id(struct feat_fd *ff, void *data __maybe_unused) |
f1c67db7 | 1688 | { |
62552457 | 1689 | if (perf_header__read_build_ids(ff->ph, ff->fd, ff->offset, ff->size)) |
f1c67db7 RR |
1690 | pr_debug("Failed to read buildids, continuing...\n"); |
1691 | return 0; | |
1692 | } | |
1693 | ||
62552457 | 1694 | static int process_nrcpus(struct feat_fd *ff, void *data __maybe_unused) |
a1ae5655 | 1695 | { |
6200e494 DCC |
1696 | int ret; |
1697 | u32 nr_cpus_avail, nr_cpus_online; | |
a1ae5655 | 1698 | |
48e5fcea | 1699 | ret = do_read_u32(ff, &nr_cpus_avail); |
6200e494 DCC |
1700 | if (ret) |
1701 | return ret; | |
a1ae5655 | 1702 | |
48e5fcea | 1703 | ret = do_read_u32(ff, &nr_cpus_online); |
6200e494 DCC |
1704 | if (ret) |
1705 | return ret; | |
1a222754 DCC |
1706 | ff->ph->env.nr_cpus_avail = (int)nr_cpus_avail; |
1707 | ff->ph->env.nr_cpus_online = (int)nr_cpus_online; | |
a1ae5655 NK |
1708 | return 0; |
1709 | } | |
1710 | ||
62552457 | 1711 | static int process_total_mem(struct feat_fd *ff, void *data __maybe_unused) |
a1ae5655 | 1712 | { |
6200e494 DCC |
1713 | u64 total_mem; |
1714 | int ret; | |
a1ae5655 | 1715 | |
48e5fcea | 1716 | ret = do_read_u64(ff, &total_mem); |
6200e494 | 1717 | if (ret) |
a1ae5655 | 1718 | return -1; |
1a222754 | 1719 | ff->ph->env.total_mem = (unsigned long long)total_mem; |
a1ae5655 NK |
1720 | return 0; |
1721 | } | |
1722 | ||
7c2f7afd RR |
1723 | static struct perf_evsel * |
1724 | perf_evlist__find_by_index(struct perf_evlist *evlist, int idx) | |
1725 | { | |
1726 | struct perf_evsel *evsel; | |
1727 | ||
e5cadb93 | 1728 | evlist__for_each_entry(evlist, evsel) { |
7c2f7afd RR |
1729 | if (evsel->idx == idx) |
1730 | return evsel; | |
1731 | } | |
1732 | ||
1733 | return NULL; | |
1734 | } | |
1735 | ||
1736 | static void | |
3d7eb86b NK |
1737 | perf_evlist__set_event_name(struct perf_evlist *evlist, |
1738 | struct perf_evsel *event) | |
7c2f7afd RR |
1739 | { |
1740 | struct perf_evsel *evsel; | |
1741 | ||
1742 | if (!event->name) | |
1743 | return; | |
1744 | ||
1745 | evsel = perf_evlist__find_by_index(evlist, event->idx); | |
1746 | if (!evsel) | |
1747 | return; | |
1748 | ||
1749 | if (evsel->name) | |
1750 | return; | |
1751 | ||
1752 | evsel->name = strdup(event->name); | |
1753 | } | |
1754 | ||
1755 | static int | |
62552457 | 1756 | process_event_desc(struct feat_fd *ff, void *data __maybe_unused) |
7c2f7afd | 1757 | { |
3d7eb86b | 1758 | struct perf_session *session; |
48e5fcea | 1759 | struct perf_evsel *evsel, *events = read_event_desc(ff); |
7c2f7afd RR |
1760 | |
1761 | if (!events) | |
1762 | return 0; | |
1763 | ||
1a222754 | 1764 | session = container_of(ff->ph, struct perf_session, header); |
f9ebdccf DCC |
1765 | |
1766 | if (session->file->is_pipe) { | |
1767 | /* Save events for reading later by print_event_desc, | |
1768 | * since they can't be read again in pipe mode. */ | |
1769 | ff->events = events; | |
1770 | } | |
1771 | ||
7c2f7afd RR |
1772 | for (evsel = events; evsel->attr.size; evsel++) |
1773 | perf_evlist__set_event_name(session->evlist, evsel); | |
1774 | ||
f9ebdccf DCC |
1775 | if (!session->file->is_pipe) |
1776 | free_event_desc(events); | |
7c2f7afd RR |
1777 | |
1778 | return 0; | |
1779 | } | |
1780 | ||
62552457 | 1781 | static int process_cmdline(struct feat_fd *ff, void *data __maybe_unused) |
a1ae5655 | 1782 | { |
768dd3f3 JO |
1783 | char *str, *cmdline = NULL, **argv = NULL; |
1784 | u32 nr, i, len = 0; | |
a1ae5655 | 1785 | |
48e5fcea | 1786 | if (do_read_u32(ff, &nr)) |
a1ae5655 NK |
1787 | return -1; |
1788 | ||
1a222754 | 1789 | ff->ph->env.nr_cmdline = nr; |
768dd3f3 | 1790 | |
62552457 | 1791 | cmdline = zalloc(ff->size + nr + 1); |
768dd3f3 JO |
1792 | if (!cmdline) |
1793 | return -1; | |
1794 | ||
1795 | argv = zalloc(sizeof(char *) * (nr + 1)); | |
1796 | if (!argv) | |
1797 | goto error; | |
a1ae5655 NK |
1798 | |
1799 | for (i = 0; i < nr; i++) { | |
48e5fcea | 1800 | str = do_read_string(ff); |
a1ae5655 NK |
1801 | if (!str) |
1802 | goto error; | |
1803 | ||
768dd3f3 JO |
1804 | argv[i] = cmdline + len; |
1805 | memcpy(argv[i], str, strlen(str) + 1); | |
1806 | len += strlen(str) + 1; | |
a1ae5655 NK |
1807 | free(str); |
1808 | } | |
1a222754 DCC |
1809 | ff->ph->env.cmdline = cmdline; |
1810 | ff->ph->env.cmdline_argv = (const char **) argv; | |
a1ae5655 NK |
1811 | return 0; |
1812 | ||
1813 | error: | |
768dd3f3 JO |
1814 | free(argv); |
1815 | free(cmdline); | |
a1ae5655 NK |
1816 | return -1; |
1817 | } | |
1818 | ||
62552457 | 1819 | static int process_cpu_topology(struct feat_fd *ff, void *data __maybe_unused) |
a1ae5655 | 1820 | { |
a1ae5655 NK |
1821 | u32 nr, i; |
1822 | char *str; | |
1823 | struct strbuf sb; | |
1a222754 | 1824 | int cpu_nr = ff->ph->env.nr_cpus_avail; |
2bb00d2f | 1825 | u64 size = 0; |
1a222754 | 1826 | struct perf_header *ph = ff->ph; |
2bb00d2f KL |
1827 | |
1828 | ph->env.cpu = calloc(cpu_nr, sizeof(*ph->env.cpu)); | |
1829 | if (!ph->env.cpu) | |
1830 | return -1; | |
a1ae5655 | 1831 | |
48e5fcea | 1832 | if (do_read_u32(ff, &nr)) |
2bb00d2f | 1833 | goto free_cpu; |
a1ae5655 | 1834 | |
a1ae5655 | 1835 | ph->env.nr_sibling_cores = nr; |
2bb00d2f | 1836 | size += sizeof(u32); |
642aadaa MH |
1837 | if (strbuf_init(&sb, 128) < 0) |
1838 | goto free_cpu; | |
a1ae5655 NK |
1839 | |
1840 | for (i = 0; i < nr; i++) { | |
48e5fcea | 1841 | str = do_read_string(ff); |
a1ae5655 NK |
1842 | if (!str) |
1843 | goto error; | |
1844 | ||
1845 | /* include a NULL character at the end */ | |
642aadaa MH |
1846 | if (strbuf_add(&sb, str, strlen(str) + 1) < 0) |
1847 | goto error; | |
2bb00d2f | 1848 | size += string_size(str); |
a1ae5655 NK |
1849 | free(str); |
1850 | } | |
1851 | ph->env.sibling_cores = strbuf_detach(&sb, NULL); | |
1852 | ||
48e5fcea | 1853 | if (do_read_u32(ff, &nr)) |
a1ae5655 NK |
1854 | return -1; |
1855 | ||
a1ae5655 | 1856 | ph->env.nr_sibling_threads = nr; |
2bb00d2f | 1857 | size += sizeof(u32); |
a1ae5655 NK |
1858 | |
1859 | for (i = 0; i < nr; i++) { | |
48e5fcea | 1860 | str = do_read_string(ff); |
a1ae5655 NK |
1861 | if (!str) |
1862 | goto error; | |
1863 | ||
1864 | /* include a NULL character at the end */ | |
642aadaa MH |
1865 | if (strbuf_add(&sb, str, strlen(str) + 1) < 0) |
1866 | goto error; | |
2bb00d2f | 1867 | size += string_size(str); |
a1ae5655 NK |
1868 | free(str); |
1869 | } | |
1870 | ph->env.sibling_threads = strbuf_detach(&sb, NULL); | |
2bb00d2f KL |
1871 | |
1872 | /* | |
1873 | * The header may be from old perf, | |
1874 | * which doesn't include core id and socket id information. | |
1875 | */ | |
62552457 | 1876 | if (ff->size <= size) { |
2bb00d2f KL |
1877 | zfree(&ph->env.cpu); |
1878 | return 0; | |
1879 | } | |
1880 | ||
1881 | for (i = 0; i < (u32)cpu_nr; i++) { | |
48e5fcea | 1882 | if (do_read_u32(ff, &nr)) |
2bb00d2f KL |
1883 | goto free_cpu; |
1884 | ||
2bb00d2f KL |
1885 | ph->env.cpu[i].core_id = nr; |
1886 | ||
48e5fcea | 1887 | if (do_read_u32(ff, &nr)) |
2bb00d2f KL |
1888 | goto free_cpu; |
1889 | ||
da8a58b5 | 1890 | if (nr != (u32)-1 && nr > (u32)cpu_nr) { |
2bb00d2f KL |
1891 | pr_debug("socket_id number is too big." |
1892 | "You may need to upgrade the perf tool.\n"); | |
1893 | goto free_cpu; | |
1894 | } | |
1895 | ||
1896 | ph->env.cpu[i].socket_id = nr; | |
1897 | } | |
1898 | ||
a1ae5655 NK |
1899 | return 0; |
1900 | ||
1901 | error: | |
1902 | strbuf_release(&sb); | |
2bb00d2f KL |
1903 | free_cpu: |
1904 | zfree(&ph->env.cpu); | |
a1ae5655 NK |
1905 | return -1; |
1906 | } | |
1907 | ||
62552457 | 1908 | static int process_numa_topology(struct feat_fd *ff, void *data __maybe_unused) |
a1ae5655 | 1909 | { |
c60da22a | 1910 | struct numa_node *nodes, *n; |
c60da22a | 1911 | u32 nr, i; |
a1ae5655 | 1912 | char *str; |
a1ae5655 NK |
1913 | |
1914 | /* nr nodes */ | |
48e5fcea | 1915 | if (do_read_u32(ff, &nr)) |
642aadaa | 1916 | return -1; |
a1ae5655 | 1917 | |
c60da22a JO |
1918 | nodes = zalloc(sizeof(*nodes) * nr); |
1919 | if (!nodes) | |
1920 | return -ENOMEM; | |
a1ae5655 NK |
1921 | |
1922 | for (i = 0; i < nr; i++) { | |
c60da22a JO |
1923 | n = &nodes[i]; |
1924 | ||
a1ae5655 | 1925 | /* node number */ |
48e5fcea | 1926 | if (do_read_u32(ff, &n->node)) |
a1ae5655 NK |
1927 | goto error; |
1928 | ||
48e5fcea | 1929 | if (do_read_u64(ff, &n->mem_total)) |
a1ae5655 NK |
1930 | goto error; |
1931 | ||
48e5fcea | 1932 | if (do_read_u64(ff, &n->mem_free)) |
a1ae5655 NK |
1933 | goto error; |
1934 | ||
48e5fcea | 1935 | str = do_read_string(ff); |
a1ae5655 NK |
1936 | if (!str) |
1937 | goto error; | |
1938 | ||
c60da22a JO |
1939 | n->map = cpu_map__new(str); |
1940 | if (!n->map) | |
642aadaa | 1941 | goto error; |
c60da22a | 1942 | |
a1ae5655 NK |
1943 | free(str); |
1944 | } | |
1a222754 DCC |
1945 | ff->ph->env.nr_numa_nodes = nr; |
1946 | ff->ph->env.numa_nodes = nodes; | |
a1ae5655 NK |
1947 | return 0; |
1948 | ||
1949 | error: | |
c60da22a | 1950 | free(nodes); |
a1ae5655 NK |
1951 | return -1; |
1952 | } | |
1953 | ||
62552457 | 1954 | static int process_pmu_mappings(struct feat_fd *ff, void *data __maybe_unused) |
a1ae5655 | 1955 | { |
a1ae5655 NK |
1956 | char *name; |
1957 | u32 pmu_num; | |
1958 | u32 type; | |
1959 | struct strbuf sb; | |
1960 | ||
48e5fcea | 1961 | if (do_read_u32(ff, &pmu_num)) |
a1ae5655 NK |
1962 | return -1; |
1963 | ||
a1ae5655 NK |
1964 | if (!pmu_num) { |
1965 | pr_debug("pmu mappings not available\n"); | |
1966 | return 0; | |
1967 | } | |
1968 | ||
1a222754 | 1969 | ff->ph->env.nr_pmu_mappings = pmu_num; |
642aadaa MH |
1970 | if (strbuf_init(&sb, 128) < 0) |
1971 | return -1; | |
a1ae5655 NK |
1972 | |
1973 | while (pmu_num) { | |
48e5fcea | 1974 | if (do_read_u32(ff, &type)) |
a1ae5655 | 1975 | goto error; |
a1ae5655 | 1976 | |
48e5fcea | 1977 | name = do_read_string(ff); |
a1ae5655 NK |
1978 | if (!name) |
1979 | goto error; | |
1980 | ||
642aadaa MH |
1981 | if (strbuf_addf(&sb, "%u:%s", type, name) < 0) |
1982 | goto error; | |
a1ae5655 | 1983 | /* include a NULL character at the end */ |
642aadaa MH |
1984 | if (strbuf_add(&sb, "", 1) < 0) |
1985 | goto error; | |
a1ae5655 | 1986 | |
e0838e02 | 1987 | if (!strcmp(name, "msr")) |
1a222754 | 1988 | ff->ph->env.msr_pmu_type = type; |
e0838e02 | 1989 | |
a1ae5655 NK |
1990 | free(name); |
1991 | pmu_num--; | |
1992 | } | |
1a222754 | 1993 | ff->ph->env.pmu_mappings = strbuf_detach(&sb, NULL); |
a1ae5655 NK |
1994 | return 0; |
1995 | ||
1996 | error: | |
1997 | strbuf_release(&sb); | |
1998 | return -1; | |
1999 | } | |
2000 | ||
62552457 | 2001 | static int process_group_desc(struct feat_fd *ff, void *data __maybe_unused) |
a8bb559b NK |
2002 | { |
2003 | size_t ret = -1; | |
2004 | u32 i, nr, nr_groups; | |
2005 | struct perf_session *session; | |
2006 | struct perf_evsel *evsel, *leader = NULL; | |
2007 | struct group_desc { | |
2008 | char *name; | |
2009 | u32 leader_idx; | |
2010 | u32 nr_members; | |
2011 | } *desc; | |
2012 | ||
48e5fcea | 2013 | if (do_read_u32(ff, &nr_groups)) |
a8bb559b NK |
2014 | return -1; |
2015 | ||
1a222754 | 2016 | ff->ph->env.nr_groups = nr_groups; |
a8bb559b NK |
2017 | if (!nr_groups) { |
2018 | pr_debug("group desc not available\n"); | |
2019 | return 0; | |
2020 | } | |
2021 | ||
2022 | desc = calloc(nr_groups, sizeof(*desc)); | |
2023 | if (!desc) | |
2024 | return -1; | |
2025 | ||
2026 | for (i = 0; i < nr_groups; i++) { | |
48e5fcea | 2027 | desc[i].name = do_read_string(ff); |
a8bb559b NK |
2028 | if (!desc[i].name) |
2029 | goto out_free; | |
2030 | ||
48e5fcea | 2031 | if (do_read_u32(ff, &desc[i].leader_idx)) |
a8bb559b NK |
2032 | goto out_free; |
2033 | ||
48e5fcea | 2034 | if (do_read_u32(ff, &desc[i].nr_members)) |
a8bb559b | 2035 | goto out_free; |
a8bb559b NK |
2036 | } |
2037 | ||
2038 | /* | |
2039 | * Rebuild group relationship based on the group_desc | |
2040 | */ | |
1a222754 | 2041 | session = container_of(ff->ph, struct perf_session, header); |
a8bb559b NK |
2042 | session->evlist->nr_groups = nr_groups; |
2043 | ||
2044 | i = nr = 0; | |
e5cadb93 | 2045 | evlist__for_each_entry(session->evlist, evsel) { |
a8bb559b NK |
2046 | if (evsel->idx == (int) desc[i].leader_idx) { |
2047 | evsel->leader = evsel; | |
2048 | /* {anon_group} is a dummy name */ | |
210e812f | 2049 | if (strcmp(desc[i].name, "{anon_group}")) { |
a8bb559b | 2050 | evsel->group_name = desc[i].name; |
210e812f NK |
2051 | desc[i].name = NULL; |
2052 | } | |
a8bb559b NK |
2053 | evsel->nr_members = desc[i].nr_members; |
2054 | ||
2055 | if (i >= nr_groups || nr > 0) { | |
2056 | pr_debug("invalid group desc\n"); | |
2057 | goto out_free; | |
2058 | } | |
2059 | ||
2060 | leader = evsel; | |
2061 | nr = evsel->nr_members - 1; | |
2062 | i++; | |
2063 | } else if (nr) { | |
2064 | /* This is a group member */ | |
2065 | evsel->leader = leader; | |
2066 | ||
2067 | nr--; | |
2068 | } | |
2069 | } | |
2070 | ||
2071 | if (i != nr_groups || nr != 0) { | |
2072 | pr_debug("invalid group desc\n"); | |
2073 | goto out_free; | |
2074 | } | |
2075 | ||
2076 | ret = 0; | |
2077 | out_free: | |
50a2740b | 2078 | for (i = 0; i < nr_groups; i++) |
74cf249d | 2079 | zfree(&desc[i].name); |
a8bb559b NK |
2080 | free(desc); |
2081 | ||
2082 | return ret; | |
2083 | } | |
2084 | ||
62552457 | 2085 | static int process_auxtrace(struct feat_fd *ff, void *data __maybe_unused) |
99fa2984 AH |
2086 | { |
2087 | struct perf_session *session; | |
2088 | int err; | |
2089 | ||
1a222754 | 2090 | session = container_of(ff->ph, struct perf_session, header); |
99fa2984 | 2091 | |
62552457 | 2092 | err = auxtrace_index__process(ff->fd, ff->size, session, |
1a222754 | 2093 | ff->ph->needs_swap); |
99fa2984 AH |
2094 | if (err < 0) |
2095 | pr_err("Failed to process auxtrace index\n"); | |
2096 | return err; | |
2097 | } | |
2098 | ||
62552457 | 2099 | static int process_cache(struct feat_fd *ff, void *data __maybe_unused) |
720e98b5 JO |
2100 | { |
2101 | struct cpu_cache_level *caches; | |
2102 | u32 cnt, i, version; | |
2103 | ||
48e5fcea | 2104 | if (do_read_u32(ff, &version)) |
720e98b5 JO |
2105 | return -1; |
2106 | ||
720e98b5 JO |
2107 | if (version != 1) |
2108 | return -1; | |
2109 | ||
48e5fcea | 2110 | if (do_read_u32(ff, &cnt)) |
720e98b5 JO |
2111 | return -1; |
2112 | ||
720e98b5 JO |
2113 | caches = zalloc(sizeof(*caches) * cnt); |
2114 | if (!caches) | |
2115 | return -1; | |
2116 | ||
2117 | for (i = 0; i < cnt; i++) { | |
2118 | struct cpu_cache_level c; | |
2119 | ||
2120 | #define _R(v) \ | |
48e5fcea | 2121 | if (do_read_u32(ff, &c.v))\ |
720e98b5 | 2122 | goto out_free_caches; \ |
720e98b5 JO |
2123 | |
2124 | _R(level) | |
2125 | _R(line_size) | |
2126 | _R(sets) | |
2127 | _R(ways) | |
2128 | #undef _R | |
2129 | ||
1a222754 | 2130 | #define _R(v) \ |
48e5fcea | 2131 | c.v = do_read_string(ff); \ |
1a222754 | 2132 | if (!c.v) \ |
720e98b5 JO |
2133 | goto out_free_caches; |
2134 | ||
2135 | _R(type) | |
2136 | _R(size) | |
2137 | _R(map) | |
2138 | #undef _R | |
2139 | ||
2140 | caches[i] = c; | |
2141 | } | |
2142 | ||
1a222754 DCC |
2143 | ff->ph->env.caches = caches; |
2144 | ff->ph->env.caches_cnt = cnt; | |
720e98b5 JO |
2145 | return 0; |
2146 | out_free_caches: | |
2147 | free(caches); | |
2148 | return -1; | |
2149 | } | |
2150 | ||
fbe96f29 | 2151 | struct feature_ops { |
ccebbeb6 | 2152 | int (*write)(struct feat_fd *ff, struct perf_evlist *evlist); |
cfc65420 | 2153 | void (*print)(struct feat_fd *ff, FILE *fp); |
62552457 | 2154 | int (*process)(struct feat_fd *ff, void *data); |
fbe96f29 SE |
2155 | const char *name; |
2156 | bool full_only; | |
a4d8c985 | 2157 | bool synthesize; |
fbe96f29 SE |
2158 | }; |
2159 | ||
a4d8c985 DCC |
2160 | #define FEAT_OPR(n, func, __full_only) \ |
2161 | [HEADER_##n] = { \ | |
2162 | .name = __stringify(n), \ | |
2163 | .write = write_##func, \ | |
2164 | .print = print_##func, \ | |
2165 | .full_only = __full_only, \ | |
2166 | .process = process_##func, \ | |
2167 | .synthesize = true \ | |
2168 | } | |
2169 | ||
2170 | #define FEAT_OPN(n, func, __full_only) \ | |
2171 | [HEADER_##n] = { \ | |
2172 | .name = __stringify(n), \ | |
2173 | .write = write_##func, \ | |
2174 | .print = print_##func, \ | |
2175 | .full_only = __full_only, \ | |
2176 | .process = process_##func \ | |
2177 | } | |
8cdfa78a RR |
2178 | |
2179 | /* feature_ops not implemented: */ | |
2eeaaa09 SE |
2180 | #define print_tracing_data NULL |
2181 | #define print_build_id NULL | |
fbe96f29 | 2182 | |
a4d8c985 DCC |
2183 | #define process_branch_stack NULL |
2184 | #define process_stat NULL | |
2185 | ||
2186 | ||
fbe96f29 | 2187 | static const struct feature_ops feat_ops[HEADER_LAST_FEATURE] = { |
a4d8c985 DCC |
2188 | FEAT_OPN(TRACING_DATA, tracing_data, false), |
2189 | FEAT_OPN(BUILD_ID, build_id, false), | |
2190 | FEAT_OPR(HOSTNAME, hostname, false), | |
2191 | FEAT_OPR(OSRELEASE, osrelease, false), | |
2192 | FEAT_OPR(VERSION, version, false), | |
2193 | FEAT_OPR(ARCH, arch, false), | |
2194 | FEAT_OPR(NRCPUS, nrcpus, false), | |
2195 | FEAT_OPR(CPUDESC, cpudesc, false), | |
2196 | FEAT_OPR(CPUID, cpuid, false), | |
2197 | FEAT_OPR(TOTAL_MEM, total_mem, false), | |
2198 | FEAT_OPR(EVENT_DESC, event_desc, false), | |
2199 | FEAT_OPR(CMDLINE, cmdline, false), | |
2200 | FEAT_OPR(CPU_TOPOLOGY, cpu_topology, true), | |
2201 | FEAT_OPR(NUMA_TOPOLOGY, numa_topology, true), | |
2202 | FEAT_OPN(BRANCH_STACK, branch_stack, false), | |
2203 | FEAT_OPR(PMU_MAPPINGS, pmu_mappings, false), | |
2204 | FEAT_OPN(GROUP_DESC, group_desc, false), | |
2205 | FEAT_OPN(AUXTRACE, auxtrace, false), | |
2206 | FEAT_OPN(STAT, stat, false), | |
2207 | FEAT_OPN(CACHE, cache, true), | |
fbe96f29 SE |
2208 | }; |
2209 | ||
2210 | struct header_print_data { | |
2211 | FILE *fp; | |
2212 | bool full; /* extended list of headers */ | |
2213 | }; | |
2214 | ||
2215 | static int perf_file_section__fprintf_info(struct perf_file_section *section, | |
2216 | struct perf_header *ph, | |
2217 | int feat, int fd, void *data) | |
2218 | { | |
2219 | struct header_print_data *hd = data; | |
cfc65420 | 2220 | struct feat_fd ff; |
fbe96f29 SE |
2221 | |
2222 | if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) { | |
2223 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " | |
2224 | "%d, continuing...\n", section->offset, feat); | |
2225 | return 0; | |
2226 | } | |
b1e5a9be | 2227 | if (feat >= HEADER_LAST_FEATURE) { |
fbe96f29 | 2228 | pr_warning("unknown feature %d\n", feat); |
f7a8a133 | 2229 | return 0; |
fbe96f29 SE |
2230 | } |
2231 | if (!feat_ops[feat].print) | |
2232 | return 0; | |
2233 | ||
cfc65420 DCC |
2234 | ff = (struct feat_fd) { |
2235 | .fd = fd, | |
2236 | .ph = ph, | |
2237 | }; | |
2238 | ||
fbe96f29 | 2239 | if (!feat_ops[feat].full_only || hd->full) |
cfc65420 | 2240 | feat_ops[feat].print(&ff, hd->fp); |
fbe96f29 SE |
2241 | else |
2242 | fprintf(hd->fp, "# %s info available, use -I to display\n", | |
2243 | feat_ops[feat].name); | |
2244 | ||
2245 | return 0; | |
2246 | } | |
2247 | ||
2248 | int perf_header__fprintf_info(struct perf_session *session, FILE *fp, bool full) | |
2249 | { | |
2250 | struct header_print_data hd; | |
2251 | struct perf_header *header = &session->header; | |
cc9784bd | 2252 | int fd = perf_data_file__fd(session->file); |
f45f5615 | 2253 | struct stat st; |
aabae165 | 2254 | int ret, bit; |
f45f5615 | 2255 | |
fbe96f29 SE |
2256 | hd.fp = fp; |
2257 | hd.full = full; | |
2258 | ||
f45f5615 JO |
2259 | ret = fstat(fd, &st); |
2260 | if (ret == -1) | |
2261 | return -1; | |
2262 | ||
2263 | fprintf(fp, "# captured on: %s", ctime(&st.st_ctime)); | |
2264 | ||
fbe96f29 SE |
2265 | perf_header__process_sections(header, fd, &hd, |
2266 | perf_file_section__fprintf_info); | |
aabae165 | 2267 | |
c9d1c934 DCC |
2268 | if (session->file->is_pipe) |
2269 | return 0; | |
2270 | ||
aabae165 JO |
2271 | fprintf(fp, "# missing features: "); |
2272 | for_each_clear_bit(bit, header->adds_features, HEADER_LAST_FEATURE) { | |
2273 | if (bit) | |
2274 | fprintf(fp, "%s ", feat_ops[bit].name); | |
2275 | } | |
2276 | ||
2277 | fprintf(fp, "\n"); | |
fbe96f29 SE |
2278 | return 0; |
2279 | } | |
2280 | ||
ccebbeb6 | 2281 | static int do_write_feat(struct feat_fd *ff, int type, |
fbe96f29 SE |
2282 | struct perf_file_section **p, |
2283 | struct perf_evlist *evlist) | |
2284 | { | |
2285 | int err; | |
2286 | int ret = 0; | |
2287 | ||
ccebbeb6 | 2288 | if (perf_header__has_feat(ff->ph, type)) { |
b1e5a9be RR |
2289 | if (!feat_ops[type].write) |
2290 | return -1; | |
fbe96f29 | 2291 | |
0b3d3410 DCC |
2292 | if (WARN(ff->buf, "Error: calling %s in pipe-mode.\n", __func__)) |
2293 | return -1; | |
2294 | ||
ccebbeb6 | 2295 | (*p)->offset = lseek(ff->fd, 0, SEEK_CUR); |
fbe96f29 | 2296 | |
ccebbeb6 | 2297 | err = feat_ops[type].write(ff, evlist); |
fbe96f29 | 2298 | if (err < 0) { |
0c2aff4c | 2299 | pr_debug("failed to write feature %s\n", feat_ops[type].name); |
fbe96f29 SE |
2300 | |
2301 | /* undo anything written */ | |
ccebbeb6 | 2302 | lseek(ff->fd, (*p)->offset, SEEK_SET); |
fbe96f29 SE |
2303 | |
2304 | return -1; | |
2305 | } | |
ccebbeb6 | 2306 | (*p)->size = lseek(ff->fd, 0, SEEK_CUR) - (*p)->offset; |
fbe96f29 SE |
2307 | (*p)++; |
2308 | } | |
2309 | return ret; | |
2310 | } | |
2311 | ||
1c0b04d1 | 2312 | static int perf_header__adds_write(struct perf_header *header, |
361c99a6 | 2313 | struct perf_evlist *evlist, int fd) |
2ba08250 | 2314 | { |
9e827dd0 | 2315 | int nr_sections; |
ccebbeb6 | 2316 | struct feat_fd ff; |
fbe96f29 | 2317 | struct perf_file_section *feat_sec, *p; |
9e827dd0 FW |
2318 | int sec_size; |
2319 | u64 sec_start; | |
b1e5a9be | 2320 | int feat; |
fbe96f29 | 2321 | int err; |
9e827dd0 | 2322 | |
ccebbeb6 DCC |
2323 | ff = (struct feat_fd){ |
2324 | .fd = fd, | |
2325 | .ph = header, | |
2326 | }; | |
2327 | ||
1c0b04d1 | 2328 | nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS); |
9e827dd0 | 2329 | if (!nr_sections) |
d5eed904 | 2330 | return 0; |
9e827dd0 | 2331 | |
91b98804 | 2332 | feat_sec = p = calloc(nr_sections, sizeof(*feat_sec)); |
d5eed904 ACM |
2333 | if (feat_sec == NULL) |
2334 | return -ENOMEM; | |
9e827dd0 FW |
2335 | |
2336 | sec_size = sizeof(*feat_sec) * nr_sections; | |
2337 | ||
8d541e97 | 2338 | sec_start = header->feat_offset; |
f887f301 | 2339 | lseek(fd, sec_start + sec_size, SEEK_SET); |
2ba08250 | 2340 | |
b1e5a9be | 2341 | for_each_set_bit(feat, header->adds_features, HEADER_FEAT_BITS) { |
ccebbeb6 | 2342 | if (do_write_feat(&ff, feat, &p, evlist)) |
b1e5a9be RR |
2343 | perf_header__clear_feat(header, feat); |
2344 | } | |
9e827dd0 | 2345 | |
f887f301 | 2346 | lseek(fd, sec_start, SEEK_SET); |
fbe96f29 SE |
2347 | /* |
2348 | * may write more than needed due to dropped feature, but | |
2349 | * this is okay, reader will skip the mising entries | |
2350 | */ | |
ccebbeb6 | 2351 | err = do_write(&ff, feat_sec, sec_size); |
d5eed904 ACM |
2352 | if (err < 0) |
2353 | pr_debug("failed to write feature section\n"); | |
9e827dd0 | 2354 | free(feat_sec); |
d5eed904 | 2355 | return err; |
9e827dd0 | 2356 | } |
2ba08250 | 2357 | |
8dc58101 TZ |
2358 | int perf_header__write_pipe(int fd) |
2359 | { | |
2360 | struct perf_pipe_file_header f_header; | |
ccebbeb6 | 2361 | struct feat_fd ff; |
8dc58101 TZ |
2362 | int err; |
2363 | ||
ccebbeb6 DCC |
2364 | ff = (struct feat_fd){ .fd = fd }; |
2365 | ||
8dc58101 TZ |
2366 | f_header = (struct perf_pipe_file_header){ |
2367 | .magic = PERF_MAGIC, | |
2368 | .size = sizeof(f_header), | |
2369 | }; | |
2370 | ||
ccebbeb6 | 2371 | err = do_write(&ff, &f_header, sizeof(f_header)); |
8dc58101 TZ |
2372 | if (err < 0) { |
2373 | pr_debug("failed to write perf pipe header\n"); | |
2374 | return err; | |
2375 | } | |
2376 | ||
2377 | return 0; | |
2378 | } | |
2379 | ||
a91e5431 ACM |
2380 | int perf_session__write_header(struct perf_session *session, |
2381 | struct perf_evlist *evlist, | |
2382 | int fd, bool at_exit) | |
7c6a1c65 PZ |
2383 | { |
2384 | struct perf_file_header f_header; | |
2385 | struct perf_file_attr f_attr; | |
1c0b04d1 | 2386 | struct perf_header *header = &session->header; |
563aecb2 | 2387 | struct perf_evsel *evsel; |
ccebbeb6 | 2388 | struct feat_fd ff; |
944d62ba | 2389 | u64 attr_offset; |
a91e5431 | 2390 | int err; |
7c6a1c65 | 2391 | |
ccebbeb6 | 2392 | ff = (struct feat_fd){ .fd = fd}; |
7c6a1c65 PZ |
2393 | lseek(fd, sizeof(f_header), SEEK_SET); |
2394 | ||
e5cadb93 | 2395 | evlist__for_each_entry(session->evlist, evsel) { |
6606f873 | 2396 | evsel->id_offset = lseek(fd, 0, SEEK_CUR); |
ccebbeb6 | 2397 | err = do_write(&ff, evsel->id, evsel->ids * sizeof(u64)); |
d5eed904 ACM |
2398 | if (err < 0) { |
2399 | pr_debug("failed to write perf header\n"); | |
2400 | return err; | |
2401 | } | |
7c6a1c65 PZ |
2402 | } |
2403 | ||
ccebbeb6 | 2404 | attr_offset = lseek(ff.fd, 0, SEEK_CUR); |
7c6a1c65 | 2405 | |
e5cadb93 | 2406 | evlist__for_each_entry(evlist, evsel) { |
7c6a1c65 | 2407 | f_attr = (struct perf_file_attr){ |
6606f873 | 2408 | .attr = evsel->attr, |
7c6a1c65 | 2409 | .ids = { |
6606f873 RR |
2410 | .offset = evsel->id_offset, |
2411 | .size = evsel->ids * sizeof(u64), | |
7c6a1c65 PZ |
2412 | } |
2413 | }; | |
ccebbeb6 | 2414 | err = do_write(&ff, &f_attr, sizeof(f_attr)); |
d5eed904 ACM |
2415 | if (err < 0) { |
2416 | pr_debug("failed to write perf header attribute\n"); | |
2417 | return err; | |
2418 | } | |
7c6a1c65 PZ |
2419 | } |
2420 | ||
d645c442 AH |
2421 | if (!header->data_offset) |
2422 | header->data_offset = lseek(fd, 0, SEEK_CUR); | |
8d541e97 | 2423 | header->feat_offset = header->data_offset + header->data_size; |
7c6a1c65 | 2424 | |
d5eed904 | 2425 | if (at_exit) { |
1c0b04d1 | 2426 | err = perf_header__adds_write(header, evlist, fd); |
d5eed904 ACM |
2427 | if (err < 0) |
2428 | return err; | |
2429 | } | |
9e827dd0 | 2430 | |
7c6a1c65 PZ |
2431 | f_header = (struct perf_file_header){ |
2432 | .magic = PERF_MAGIC, | |
2433 | .size = sizeof(f_header), | |
2434 | .attr_size = sizeof(f_attr), | |
2435 | .attrs = { | |
944d62ba | 2436 | .offset = attr_offset, |
a91e5431 | 2437 | .size = evlist->nr_entries * sizeof(f_attr), |
7c6a1c65 PZ |
2438 | }, |
2439 | .data = { | |
1c0b04d1 ACM |
2440 | .offset = header->data_offset, |
2441 | .size = header->data_size, | |
7c6a1c65 | 2442 | }, |
44b3c578 | 2443 | /* event_types is ignored, store zeros */ |
7c6a1c65 PZ |
2444 | }; |
2445 | ||
1c0b04d1 | 2446 | memcpy(&f_header.adds_features, &header->adds_features, sizeof(header->adds_features)); |
2ba08250 | 2447 | |
7c6a1c65 | 2448 | lseek(fd, 0, SEEK_SET); |
ccebbeb6 | 2449 | err = do_write(&ff, &f_header, sizeof(f_header)); |
d5eed904 ACM |
2450 | if (err < 0) { |
2451 | pr_debug("failed to write perf header\n"); | |
2452 | return err; | |
2453 | } | |
1c0b04d1 | 2454 | lseek(fd, header->data_offset + header->data_size, SEEK_SET); |
7c6a1c65 | 2455 | |
d5eed904 | 2456 | return 0; |
7c6a1c65 PZ |
2457 | } |
2458 | ||
1c0b04d1 | 2459 | static int perf_header__getbuffer64(struct perf_header *header, |
ba21594c ACM |
2460 | int fd, void *buf, size_t size) |
2461 | { | |
1e7972cc | 2462 | if (readn(fd, buf, size) <= 0) |
ba21594c ACM |
2463 | return -1; |
2464 | ||
1c0b04d1 | 2465 | if (header->needs_swap) |
ba21594c ACM |
2466 | mem_bswap_64(buf, size); |
2467 | ||
2468 | return 0; | |
2469 | } | |
2470 | ||
1c0b04d1 | 2471 | int perf_header__process_sections(struct perf_header *header, int fd, |
fbe96f29 | 2472 | void *data, |
1c0b04d1 | 2473 | int (*process)(struct perf_file_section *section, |
b1e5a9be RR |
2474 | struct perf_header *ph, |
2475 | int feat, int fd, void *data)) | |
2ba08250 | 2476 | { |
b1e5a9be | 2477 | struct perf_file_section *feat_sec, *sec; |
9e827dd0 FW |
2478 | int nr_sections; |
2479 | int sec_size; | |
b1e5a9be RR |
2480 | int feat; |
2481 | int err; | |
9e827dd0 | 2482 | |
1c0b04d1 | 2483 | nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS); |
9e827dd0 | 2484 | if (!nr_sections) |
37562eac | 2485 | return 0; |
9e827dd0 | 2486 | |
91b98804 | 2487 | feat_sec = sec = calloc(nr_sections, sizeof(*feat_sec)); |
9e827dd0 | 2488 | if (!feat_sec) |
37562eac | 2489 | return -1; |
9e827dd0 FW |
2490 | |
2491 | sec_size = sizeof(*feat_sec) * nr_sections; | |
2492 | ||
8d541e97 | 2493 | lseek(fd, header->feat_offset, SEEK_SET); |
9e827dd0 | 2494 | |
b1e5a9be RR |
2495 | err = perf_header__getbuffer64(header, fd, feat_sec, sec_size); |
2496 | if (err < 0) | |
769885f3 | 2497 | goto out_free; |
9e827dd0 | 2498 | |
b1e5a9be RR |
2499 | for_each_set_bit(feat, header->adds_features, HEADER_LAST_FEATURE) { |
2500 | err = process(sec++, header, feat, fd, data); | |
2501 | if (err < 0) | |
2502 | goto out_free; | |
2ba08250 | 2503 | } |
b1e5a9be | 2504 | err = 0; |
769885f3 | 2505 | out_free: |
37562eac ACM |
2506 | free(feat_sec); |
2507 | return err; | |
769885f3 | 2508 | } |
4778d2e4 | 2509 | |
114382a0 SE |
2510 | static const int attr_file_abi_sizes[] = { |
2511 | [0] = PERF_ATTR_SIZE_VER0, | |
2512 | [1] = PERF_ATTR_SIZE_VER1, | |
239cc478 | 2513 | [2] = PERF_ATTR_SIZE_VER2, |
0f6a3015 | 2514 | [3] = PERF_ATTR_SIZE_VER3, |
6a21c0b5 | 2515 | [4] = PERF_ATTR_SIZE_VER4, |
114382a0 SE |
2516 | 0, |
2517 | }; | |
2518 | ||
2519 | /* | |
2520 | * In the legacy file format, the magic number is not used to encode endianness. | |
2521 | * hdr_sz was used to encode endianness. But given that hdr_sz can vary based | |
2522 | * on ABI revisions, we need to try all combinations for all endianness to | |
2523 | * detect the endianness. | |
2524 | */ | |
2525 | static int try_all_file_abis(uint64_t hdr_sz, struct perf_header *ph) | |
73323f54 | 2526 | { |
114382a0 SE |
2527 | uint64_t ref_size, attr_size; |
2528 | int i; | |
73323f54 | 2529 | |
114382a0 SE |
2530 | for (i = 0 ; attr_file_abi_sizes[i]; i++) { |
2531 | ref_size = attr_file_abi_sizes[i] | |
2532 | + sizeof(struct perf_file_section); | |
2533 | if (hdr_sz != ref_size) { | |
2534 | attr_size = bswap_64(hdr_sz); | |
2535 | if (attr_size != ref_size) | |
2536 | continue; | |
73323f54 | 2537 | |
114382a0 SE |
2538 | ph->needs_swap = true; |
2539 | } | |
2540 | pr_debug("ABI%d perf.data file detected, need_swap=%d\n", | |
2541 | i, | |
2542 | ph->needs_swap); | |
2543 | return 0; | |
2544 | } | |
2545 | /* could not determine endianness */ | |
2546 | return -1; | |
2547 | } | |
73323f54 | 2548 | |
114382a0 SE |
2549 | #define PERF_PIPE_HDR_VER0 16 |
2550 | ||
2551 | static const size_t attr_pipe_abi_sizes[] = { | |
2552 | [0] = PERF_PIPE_HDR_VER0, | |
2553 | 0, | |
2554 | }; | |
2555 | ||
2556 | /* | |
2557 | * In the legacy pipe format, there is an implicit assumption that endiannesss | |
2558 | * between host recording the samples, and host parsing the samples is the | |
2559 | * same. This is not always the case given that the pipe output may always be | |
2560 | * redirected into a file and analyzed on a different machine with possibly a | |
2561 | * different endianness and perf_event ABI revsions in the perf tool itself. | |
2562 | */ | |
2563 | static int try_all_pipe_abis(uint64_t hdr_sz, struct perf_header *ph) | |
2564 | { | |
2565 | u64 attr_size; | |
2566 | int i; | |
2567 | ||
2568 | for (i = 0 ; attr_pipe_abi_sizes[i]; i++) { | |
2569 | if (hdr_sz != attr_pipe_abi_sizes[i]) { | |
2570 | attr_size = bswap_64(hdr_sz); | |
2571 | if (attr_size != hdr_sz) | |
2572 | continue; | |
73323f54 SE |
2573 | |
2574 | ph->needs_swap = true; | |
2575 | } | |
114382a0 | 2576 | pr_debug("Pipe ABI%d perf.data file detected\n", i); |
73323f54 SE |
2577 | return 0; |
2578 | } | |
114382a0 SE |
2579 | return -1; |
2580 | } | |
2581 | ||
e84ba4e2 FT |
2582 | bool is_perf_magic(u64 magic) |
2583 | { | |
2584 | if (!memcmp(&magic, __perf_magic1, sizeof(magic)) | |
2585 | || magic == __perf_magic2 | |
2586 | || magic == __perf_magic2_sw) | |
2587 | return true; | |
2588 | ||
2589 | return false; | |
2590 | } | |
2591 | ||
114382a0 SE |
2592 | static int check_magic_endian(u64 magic, uint64_t hdr_sz, |
2593 | bool is_pipe, struct perf_header *ph) | |
2594 | { | |
2595 | int ret; | |
2596 | ||
2597 | /* check for legacy format */ | |
2598 | ret = memcmp(&magic, __perf_magic1, sizeof(magic)); | |
2599 | if (ret == 0) { | |
2a08c3ec | 2600 | ph->version = PERF_HEADER_VERSION_1; |
114382a0 SE |
2601 | pr_debug("legacy perf.data format\n"); |
2602 | if (is_pipe) | |
2603 | return try_all_pipe_abis(hdr_sz, ph); | |
2604 | ||
2605 | return try_all_file_abis(hdr_sz, ph); | |
2606 | } | |
2607 | /* | |
2608 | * the new magic number serves two purposes: | |
2609 | * - unique number to identify actual perf.data files | |
2610 | * - encode endianness of file | |
2611 | */ | |
f7913971 | 2612 | ph->version = PERF_HEADER_VERSION_2; |
73323f54 | 2613 | |
114382a0 SE |
2614 | /* check magic number with one endianness */ |
2615 | if (magic == __perf_magic2) | |
73323f54 SE |
2616 | return 0; |
2617 | ||
114382a0 SE |
2618 | /* check magic number with opposite endianness */ |
2619 | if (magic != __perf_magic2_sw) | |
73323f54 SE |
2620 | return -1; |
2621 | ||
2622 | ph->needs_swap = true; | |
2623 | ||
2624 | return 0; | |
2625 | } | |
2626 | ||
1c0b04d1 | 2627 | int perf_file_header__read(struct perf_file_header *header, |
37562eac ACM |
2628 | struct perf_header *ph, int fd) |
2629 | { | |
727ebd54 | 2630 | ssize_t ret; |
73323f54 | 2631 | |
37562eac | 2632 | lseek(fd, 0, SEEK_SET); |
37562eac | 2633 | |
73323f54 SE |
2634 | ret = readn(fd, header, sizeof(*header)); |
2635 | if (ret <= 0) | |
37562eac ACM |
2636 | return -1; |
2637 | ||
114382a0 SE |
2638 | if (check_magic_endian(header->magic, |
2639 | header->attr_size, false, ph) < 0) { | |
2640 | pr_debug("magic/endian check failed\n"); | |
73323f54 | 2641 | return -1; |
114382a0 | 2642 | } |
ba21594c | 2643 | |
73323f54 | 2644 | if (ph->needs_swap) { |
1c0b04d1 | 2645 | mem_bswap_64(header, offsetof(struct perf_file_header, |
73323f54 | 2646 | adds_features)); |
ba21594c ACM |
2647 | } |
2648 | ||
1c0b04d1 | 2649 | if (header->size != sizeof(*header)) { |
37562eac | 2650 | /* Support the previous format */ |
1c0b04d1 ACM |
2651 | if (header->size == offsetof(typeof(*header), adds_features)) |
2652 | bitmap_zero(header->adds_features, HEADER_FEAT_BITS); | |
37562eac ACM |
2653 | else |
2654 | return -1; | |
d327fa43 | 2655 | } else if (ph->needs_swap) { |
d327fa43 DA |
2656 | /* |
2657 | * feature bitmap is declared as an array of unsigned longs -- | |
2658 | * not good since its size can differ between the host that | |
2659 | * generated the data file and the host analyzing the file. | |
2660 | * | |
2661 | * We need to handle endianness, but we don't know the size of | |
2662 | * the unsigned long where the file was generated. Take a best | |
2663 | * guess at determining it: try 64-bit swap first (ie., file | |
2664 | * created on a 64-bit host), and check if the hostname feature | |
2665 | * bit is set (this feature bit is forced on as of fbe96f2). | |
2666 | * If the bit is not, undo the 64-bit swap and try a 32-bit | |
2667 | * swap. If the hostname bit is still not set (e.g., older data | |
2668 | * file), punt and fallback to the original behavior -- | |
2669 | * clearing all feature bits and setting buildid. | |
2670 | */ | |
80c0120a DA |
2671 | mem_bswap_64(&header->adds_features, |
2672 | BITS_TO_U64(HEADER_FEAT_BITS)); | |
d327fa43 DA |
2673 | |
2674 | if (!test_bit(HEADER_HOSTNAME, header->adds_features)) { | |
80c0120a DA |
2675 | /* unswap as u64 */ |
2676 | mem_bswap_64(&header->adds_features, | |
2677 | BITS_TO_U64(HEADER_FEAT_BITS)); | |
2678 | ||
2679 | /* unswap as u32 */ | |
2680 | mem_bswap_32(&header->adds_features, | |
2681 | BITS_TO_U32(HEADER_FEAT_BITS)); | |
d327fa43 DA |
2682 | } |
2683 | ||
2684 | if (!test_bit(HEADER_HOSTNAME, header->adds_features)) { | |
2685 | bitmap_zero(header->adds_features, HEADER_FEAT_BITS); | |
2686 | set_bit(HEADER_BUILD_ID, header->adds_features); | |
2687 | } | |
4778d2e4 | 2688 | } |
9e827dd0 | 2689 | |
1c0b04d1 | 2690 | memcpy(&ph->adds_features, &header->adds_features, |
ba21594c | 2691 | sizeof(ph->adds_features)); |
37562eac | 2692 | |
1c0b04d1 ACM |
2693 | ph->data_offset = header->data.offset; |
2694 | ph->data_size = header->data.size; | |
8d541e97 | 2695 | ph->feat_offset = header->data.offset + header->data.size; |
37562eac ACM |
2696 | return 0; |
2697 | } | |
2698 | ||
1c0b04d1 | 2699 | static int perf_file_section__process(struct perf_file_section *section, |
ba21594c | 2700 | struct perf_header *ph, |
da378962 | 2701 | int feat, int fd, void *data) |
37562eac | 2702 | { |
62552457 | 2703 | struct feat_fd fdd = { |
1a222754 DCC |
2704 | .fd = fd, |
2705 | .ph = ph, | |
62552457 DCC |
2706 | .size = section->size, |
2707 | .offset = section->offset, | |
1a222754 DCC |
2708 | }; |
2709 | ||
1c0b04d1 | 2710 | if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) { |
9486aa38 | 2711 | pr_debug("Failed to lseek to %" PRIu64 " offset for feature " |
1c0b04d1 | 2712 | "%d, continuing...\n", section->offset, feat); |
37562eac ACM |
2713 | return 0; |
2714 | } | |
2715 | ||
b1e5a9be RR |
2716 | if (feat >= HEADER_LAST_FEATURE) { |
2717 | pr_debug("unknown feature %d, continuing...\n", feat); | |
2718 | return 0; | |
2719 | } | |
2720 | ||
f1c67db7 RR |
2721 | if (!feat_ops[feat].process) |
2722 | return 0; | |
37562eac | 2723 | |
62552457 | 2724 | return feat_ops[feat].process(&fdd, data); |
37562eac | 2725 | } |
2ba08250 | 2726 | |
1c0b04d1 | 2727 | static int perf_file_header__read_pipe(struct perf_pipe_file_header *header, |
454c407e TZ |
2728 | struct perf_header *ph, int fd, |
2729 | bool repipe) | |
7c6a1c65 | 2730 | { |
ccebbeb6 DCC |
2731 | struct feat_fd ff = { |
2732 | .fd = STDOUT_FILENO, | |
2733 | .ph = ph, | |
2734 | }; | |
727ebd54 | 2735 | ssize_t ret; |
73323f54 SE |
2736 | |
2737 | ret = readn(fd, header, sizeof(*header)); | |
2738 | if (ret <= 0) | |
2739 | return -1; | |
2740 | ||
114382a0 SE |
2741 | if (check_magic_endian(header->magic, header->size, true, ph) < 0) { |
2742 | pr_debug("endian/magic failed\n"); | |
8dc58101 | 2743 | return -1; |
114382a0 SE |
2744 | } |
2745 | ||
2746 | if (ph->needs_swap) | |
2747 | header->size = bswap_64(header->size); | |
8dc58101 | 2748 | |
ccebbeb6 | 2749 | if (repipe && do_write(&ff, header, sizeof(*header)) < 0) |
454c407e TZ |
2750 | return -1; |
2751 | ||
8dc58101 TZ |
2752 | return 0; |
2753 | } | |
2754 | ||
d4339569 | 2755 | static int perf_header__read_pipe(struct perf_session *session) |
8dc58101 | 2756 | { |
1c0b04d1 | 2757 | struct perf_header *header = &session->header; |
8dc58101 TZ |
2758 | struct perf_pipe_file_header f_header; |
2759 | ||
cc9784bd JO |
2760 | if (perf_file_header__read_pipe(&f_header, header, |
2761 | perf_data_file__fd(session->file), | |
454c407e | 2762 | session->repipe) < 0) { |
8dc58101 TZ |
2763 | pr_debug("incompatible file format\n"); |
2764 | return -EINVAL; | |
2765 | } | |
2766 | ||
8dc58101 TZ |
2767 | return 0; |
2768 | } | |
2769 | ||
69996df4 SE |
2770 | static int read_attr(int fd, struct perf_header *ph, |
2771 | struct perf_file_attr *f_attr) | |
2772 | { | |
2773 | struct perf_event_attr *attr = &f_attr->attr; | |
2774 | size_t sz, left; | |
2775 | size_t our_sz = sizeof(f_attr->attr); | |
727ebd54 | 2776 | ssize_t ret; |
69996df4 SE |
2777 | |
2778 | memset(f_attr, 0, sizeof(*f_attr)); | |
2779 | ||
2780 | /* read minimal guaranteed structure */ | |
2781 | ret = readn(fd, attr, PERF_ATTR_SIZE_VER0); | |
2782 | if (ret <= 0) { | |
2783 | pr_debug("cannot read %d bytes of header attr\n", | |
2784 | PERF_ATTR_SIZE_VER0); | |
2785 | return -1; | |
2786 | } | |
2787 | ||
2788 | /* on file perf_event_attr size */ | |
2789 | sz = attr->size; | |
114382a0 | 2790 | |
69996df4 SE |
2791 | if (ph->needs_swap) |
2792 | sz = bswap_32(sz); | |
2793 | ||
2794 | if (sz == 0) { | |
2795 | /* assume ABI0 */ | |
2796 | sz = PERF_ATTR_SIZE_VER0; | |
2797 | } else if (sz > our_sz) { | |
2798 | pr_debug("file uses a more recent and unsupported ABI" | |
2799 | " (%zu bytes extra)\n", sz - our_sz); | |
2800 | return -1; | |
2801 | } | |
2802 | /* what we have not yet read and that we know about */ | |
2803 | left = sz - PERF_ATTR_SIZE_VER0; | |
2804 | if (left) { | |
2805 | void *ptr = attr; | |
2806 | ptr += PERF_ATTR_SIZE_VER0; | |
2807 | ||
2808 | ret = readn(fd, ptr, left); | |
2809 | } | |
2810 | /* read perf_file_section, ids are read in caller */ | |
2811 | ret = readn(fd, &f_attr->ids, sizeof(f_attr->ids)); | |
2812 | ||
2813 | return ret <= 0 ? -1 : 0; | |
2814 | } | |
2815 | ||
831394bd NK |
2816 | static int perf_evsel__prepare_tracepoint_event(struct perf_evsel *evsel, |
2817 | struct pevent *pevent) | |
cb9dd49e | 2818 | { |
831394bd | 2819 | struct event_format *event; |
cb9dd49e ACM |
2820 | char bf[128]; |
2821 | ||
831394bd NK |
2822 | /* already prepared */ |
2823 | if (evsel->tp_format) | |
2824 | return 0; | |
2825 | ||
3dce2ce3 NK |
2826 | if (pevent == NULL) { |
2827 | pr_debug("broken or missing trace data\n"); | |
2828 | return -1; | |
2829 | } | |
2830 | ||
831394bd | 2831 | event = pevent_find_event(pevent, evsel->attr.config); |
a7619aef NK |
2832 | if (event == NULL) { |
2833 | pr_debug("cannot find event format for %d\n", (int)evsel->attr.config); | |
cb9dd49e | 2834 | return -1; |
a7619aef | 2835 | } |
cb9dd49e | 2836 | |
831394bd NK |
2837 | if (!evsel->name) { |
2838 | snprintf(bf, sizeof(bf), "%s:%s", event->system, event->name); | |
2839 | evsel->name = strdup(bf); | |
2840 | if (evsel->name == NULL) | |
2841 | return -1; | |
2842 | } | |
cb9dd49e | 2843 | |
fcf65bf1 | 2844 | evsel->tp_format = event; |
cb9dd49e ACM |
2845 | return 0; |
2846 | } | |
2847 | ||
831394bd NK |
2848 | static int perf_evlist__prepare_tracepoint_events(struct perf_evlist *evlist, |
2849 | struct pevent *pevent) | |
cb9dd49e ACM |
2850 | { |
2851 | struct perf_evsel *pos; | |
2852 | ||
e5cadb93 | 2853 | evlist__for_each_entry(evlist, pos) { |
831394bd NK |
2854 | if (pos->attr.type == PERF_TYPE_TRACEPOINT && |
2855 | perf_evsel__prepare_tracepoint_event(pos, pevent)) | |
cb9dd49e ACM |
2856 | return -1; |
2857 | } | |
2858 | ||
2859 | return 0; | |
2860 | } | |
2861 | ||
d4339569 | 2862 | int perf_session__read_header(struct perf_session *session) |
8dc58101 | 2863 | { |
cc9784bd | 2864 | struct perf_data_file *file = session->file; |
1c0b04d1 | 2865 | struct perf_header *header = &session->header; |
ba21594c | 2866 | struct perf_file_header f_header; |
7c6a1c65 PZ |
2867 | struct perf_file_attr f_attr; |
2868 | u64 f_id; | |
7c6a1c65 | 2869 | int nr_attrs, nr_ids, i, j; |
cc9784bd | 2870 | int fd = perf_data_file__fd(file); |
7c6a1c65 | 2871 | |
334fe7a3 | 2872 | session->evlist = perf_evlist__new(); |
a91e5431 ACM |
2873 | if (session->evlist == NULL) |
2874 | return -ENOMEM; | |
2875 | ||
2c07144d | 2876 | session->evlist->env = &header->env; |
4cde998d | 2877 | session->machines.host.env = &header->env; |
cc9784bd | 2878 | if (perf_data_file__is_pipe(file)) |
d4339569 | 2879 | return perf_header__read_pipe(session); |
8dc58101 | 2880 | |
69996df4 | 2881 | if (perf_file_header__read(&f_header, header, fd) < 0) |
4dc0a04b | 2882 | return -EINVAL; |
7c6a1c65 | 2883 | |
b314e5cf NK |
2884 | /* |
2885 | * Sanity check that perf.data was written cleanly; data size is | |
2886 | * initialized to 0 and updated only if the on_exit function is run. | |
2887 | * If data size is still 0 then the file contains only partial | |
2888 | * information. Just warn user and process it as much as it can. | |
2889 | */ | |
2890 | if (f_header.data.size == 0) { | |
2891 | pr_warning("WARNING: The %s file's data size field is 0 which is unexpected.\n" | |
2892 | "Was the 'perf record' command properly terminated?\n", | |
cc9784bd | 2893 | file->path); |
b314e5cf NK |
2894 | } |
2895 | ||
69996df4 | 2896 | nr_attrs = f_header.attrs.size / f_header.attr_size; |
7c6a1c65 PZ |
2897 | lseek(fd, f_header.attrs.offset, SEEK_SET); |
2898 | ||
2899 | for (i = 0; i < nr_attrs; i++) { | |
a91e5431 | 2900 | struct perf_evsel *evsel; |
1c222bce | 2901 | off_t tmp; |
7c6a1c65 | 2902 | |
69996df4 | 2903 | if (read_attr(fd, header, &f_attr) < 0) |
769885f3 | 2904 | goto out_errno; |
ba21594c | 2905 | |
1060ab85 DA |
2906 | if (header->needs_swap) { |
2907 | f_attr.ids.size = bswap_64(f_attr.ids.size); | |
2908 | f_attr.ids.offset = bswap_64(f_attr.ids.offset); | |
eda3913b | 2909 | perf_event__attr_swap(&f_attr.attr); |
1060ab85 | 2910 | } |
eda3913b | 2911 | |
1c222bce | 2912 | tmp = lseek(fd, 0, SEEK_CUR); |
ef503831 | 2913 | evsel = perf_evsel__new(&f_attr.attr); |
7c6a1c65 | 2914 | |
a91e5431 ACM |
2915 | if (evsel == NULL) |
2916 | goto out_delete_evlist; | |
0807d2d8 ACM |
2917 | |
2918 | evsel->needs_swap = header->needs_swap; | |
a91e5431 ACM |
2919 | /* |
2920 | * Do it before so that if perf_evsel__alloc_id fails, this | |
2921 | * entry gets purged too at perf_evlist__delete(). | |
2922 | */ | |
2923 | perf_evlist__add(session->evlist, evsel); | |
7c6a1c65 PZ |
2924 | |
2925 | nr_ids = f_attr.ids.size / sizeof(u64); | |
a91e5431 ACM |
2926 | /* |
2927 | * We don't have the cpu and thread maps on the header, so | |
2928 | * for allocating the perf_sample_id table we fake 1 cpu and | |
2929 | * hattr->ids threads. | |
2930 | */ | |
2931 | if (perf_evsel__alloc_id(evsel, 1, nr_ids)) | |
2932 | goto out_delete_evlist; | |
2933 | ||
7c6a1c65 PZ |
2934 | lseek(fd, f_attr.ids.offset, SEEK_SET); |
2935 | ||
2936 | for (j = 0; j < nr_ids; j++) { | |
1c0b04d1 | 2937 | if (perf_header__getbuffer64(header, fd, &f_id, sizeof(f_id))) |
769885f3 | 2938 | goto out_errno; |
7c6a1c65 | 2939 | |
a91e5431 | 2940 | perf_evlist__id_add(session->evlist, evsel, 0, j, f_id); |
7c6a1c65 | 2941 | } |
11deb1f9 | 2942 | |
7c6a1c65 PZ |
2943 | lseek(fd, tmp, SEEK_SET); |
2944 | } | |
2945 | ||
d04b35f8 ACM |
2946 | symbol_conf.nr_events = nr_attrs; |
2947 | ||
29f5ffd3 | 2948 | perf_header__process_sections(header, fd, &session->tevent, |
fbe96f29 | 2949 | perf_file_section__process); |
4778d2e4 | 2950 | |
831394bd | 2951 | if (perf_evlist__prepare_tracepoint_events(session->evlist, |
29f5ffd3 | 2952 | session->tevent.pevent)) |
cb9dd49e ACM |
2953 | goto out_delete_evlist; |
2954 | ||
4dc0a04b | 2955 | return 0; |
769885f3 ACM |
2956 | out_errno: |
2957 | return -errno; | |
a91e5431 ACM |
2958 | |
2959 | out_delete_evlist: | |
2960 | perf_evlist__delete(session->evlist); | |
2961 | session->evlist = NULL; | |
2962 | return -ENOMEM; | |
7c6a1c65 | 2963 | } |
0d3a5c88 | 2964 | |
45694aa7 | 2965 | int perf_event__synthesize_attr(struct perf_tool *tool, |
f4d83436 | 2966 | struct perf_event_attr *attr, u32 ids, u64 *id, |
743eb868 | 2967 | perf_event__handler_t process) |
2c46dbb5 | 2968 | { |
8115d60c | 2969 | union perf_event *ev; |
2c46dbb5 TZ |
2970 | size_t size; |
2971 | int err; | |
2972 | ||
2973 | size = sizeof(struct perf_event_attr); | |
9ac3e487 | 2974 | size = PERF_ALIGN(size, sizeof(u64)); |
2c46dbb5 TZ |
2975 | size += sizeof(struct perf_event_header); |
2976 | size += ids * sizeof(u64); | |
2977 | ||
2978 | ev = malloc(size); | |
2979 | ||
ce47dc56 CS |
2980 | if (ev == NULL) |
2981 | return -ENOMEM; | |
2982 | ||
2c46dbb5 TZ |
2983 | ev->attr.attr = *attr; |
2984 | memcpy(ev->attr.id, id, ids * sizeof(u64)); | |
2985 | ||
2986 | ev->attr.header.type = PERF_RECORD_HEADER_ATTR; | |
f4d83436 | 2987 | ev->attr.header.size = (u16)size; |
2c46dbb5 | 2988 | |
f4d83436 RR |
2989 | if (ev->attr.header.size == size) |
2990 | err = process(tool, ev, NULL, NULL); | |
2991 | else | |
2992 | err = -E2BIG; | |
2c46dbb5 TZ |
2993 | |
2994 | free(ev); | |
2995 | ||
2996 | return err; | |
2997 | } | |
2998 | ||
e9def1b2 DCC |
2999 | int perf_event__synthesize_features(struct perf_tool *tool, |
3000 | struct perf_session *session, | |
3001 | struct perf_evlist *evlist, | |
3002 | perf_event__handler_t process) | |
3003 | { | |
3004 | struct perf_header *header = &session->header; | |
3005 | struct feat_fd ff; | |
3006 | struct feature_event *fe; | |
3007 | size_t sz, sz_hdr; | |
3008 | int feat, ret; | |
3009 | ||
3010 | sz_hdr = sizeof(fe->header); | |
3011 | sz = sizeof(union perf_event); | |
3012 | /* get a nice alignment */ | |
3013 | sz = PERF_ALIGN(sz, page_size); | |
3014 | ||
3015 | memset(&ff, 0, sizeof(ff)); | |
3016 | ||
3017 | ff.buf = malloc(sz); | |
3018 | if (!ff.buf) | |
3019 | return -ENOMEM; | |
3020 | ||
3021 | ff.size = sz - sz_hdr; | |
3022 | ||
3023 | for_each_set_bit(feat, header->adds_features, HEADER_FEAT_BITS) { | |
3024 | if (!feat_ops[feat].synthesize) { | |
3025 | pr_debug("No record header feature for header :%d\n", feat); | |
3026 | continue; | |
3027 | } | |
3028 | ||
3029 | ff.offset = sizeof(*fe); | |
3030 | ||
3031 | ret = feat_ops[feat].write(&ff, evlist); | |
3032 | if (ret || ff.offset <= (ssize_t)sizeof(*fe)) { | |
3033 | pr_debug("Error writing feature\n"); | |
3034 | continue; | |
3035 | } | |
3036 | /* ff.buf may have changed due to realloc in do_write() */ | |
3037 | fe = ff.buf; | |
3038 | memset(fe, 0, sizeof(*fe)); | |
3039 | ||
3040 | fe->feat_id = feat; | |
3041 | fe->header.type = PERF_RECORD_HEADER_FEATURE; | |
3042 | fe->header.size = ff.offset; | |
3043 | ||
3044 | ret = process(tool, ff.buf, NULL, NULL); | |
3045 | if (ret) { | |
3046 | free(ff.buf); | |
3047 | return ret; | |
3048 | } | |
3049 | } | |
3050 | free(ff.buf); | |
3051 | return 0; | |
3052 | } | |
3053 | ||
3054 | int perf_event__process_feature(struct perf_tool *tool, | |
3055 | union perf_event *event, | |
3056 | struct perf_session *session __maybe_unused) | |
3057 | { | |
3058 | struct feat_fd ff = { .fd = 0 }; | |
3059 | struct feature_event *fe = (struct feature_event *)event; | |
3060 | int type = fe->header.type; | |
3061 | u64 feat = fe->feat_id; | |
3062 | ||
3063 | if (type < 0 || type >= PERF_RECORD_HEADER_MAX) { | |
3064 | pr_warning("invalid record type %d in pipe-mode\n", type); | |
3065 | return 0; | |
3066 | } | |
3067 | if (feat == HEADER_RESERVED || feat > HEADER_LAST_FEATURE) { | |
3068 | pr_warning("invalid record type %d in pipe-mode\n", type); | |
3069 | return -1; | |
3070 | } | |
3071 | ||
3072 | if (!feat_ops[feat].process) | |
3073 | return 0; | |
3074 | ||
3075 | ff.buf = (void *)fe->data; | |
3076 | ff.size = event->header.size - sizeof(event->header); | |
3077 | ff.ph = &session->header; | |
3078 | ||
3079 | if (feat_ops[feat].process(&ff, NULL)) | |
3080 | return -1; | |
3081 | ||
3082 | if (!feat_ops[feat].print || !tool->show_feat_hdr) | |
3083 | return 0; | |
3084 | ||
3085 | if (!feat_ops[feat].full_only || | |
3086 | tool->show_feat_hdr >= SHOW_FEAT_HEADER_FULL_INFO) { | |
3087 | feat_ops[feat].print(&ff, stdout); | |
3088 | } else { | |
3089 | fprintf(stdout, "# %s info available, use -I to display\n", | |
3090 | feat_ops[feat].name); | |
3091 | } | |
3092 | ||
3093 | return 0; | |
3094 | } | |
3095 | ||
a6e52817 JO |
3096 | static struct event_update_event * |
3097 | event_update_event__new(size_t size, u64 type, u64 id) | |
3098 | { | |
3099 | struct event_update_event *ev; | |
3100 | ||
3101 | size += sizeof(*ev); | |
3102 | size = PERF_ALIGN(size, sizeof(u64)); | |
3103 | ||
3104 | ev = zalloc(size); | |
3105 | if (ev) { | |
3106 | ev->header.type = PERF_RECORD_EVENT_UPDATE; | |
3107 | ev->header.size = (u16)size; | |
3108 | ev->type = type; | |
3109 | ev->id = id; | |
3110 | } | |
3111 | return ev; | |
3112 | } | |
3113 | ||
3114 | int | |
3115 | perf_event__synthesize_event_update_unit(struct perf_tool *tool, | |
3116 | struct perf_evsel *evsel, | |
3117 | perf_event__handler_t process) | |
3118 | { | |
3119 | struct event_update_event *ev; | |
3120 | size_t size = strlen(evsel->unit); | |
3121 | int err; | |
3122 | ||
3123 | ev = event_update_event__new(size + 1, PERF_EVENT_UPDATE__UNIT, evsel->id[0]); | |
3124 | if (ev == NULL) | |
3125 | return -ENOMEM; | |
3126 | ||
3127 | strncpy(ev->data, evsel->unit, size); | |
3128 | err = process(tool, (union perf_event *)ev, NULL, NULL); | |
3129 | free(ev); | |
3130 | return err; | |
3131 | } | |
3132 | ||
daeecbc0 JO |
3133 | int |
3134 | perf_event__synthesize_event_update_scale(struct perf_tool *tool, | |
3135 | struct perf_evsel *evsel, | |
3136 | perf_event__handler_t process) | |
3137 | { | |
3138 | struct event_update_event *ev; | |
3139 | struct event_update_event_scale *ev_data; | |
3140 | int err; | |
3141 | ||
3142 | ev = event_update_event__new(sizeof(*ev_data), PERF_EVENT_UPDATE__SCALE, evsel->id[0]); | |
3143 | if (ev == NULL) | |
3144 | return -ENOMEM; | |
3145 | ||
3146 | ev_data = (struct event_update_event_scale *) ev->data; | |
3147 | ev_data->scale = evsel->scale; | |
3148 | err = process(tool, (union perf_event*) ev, NULL, NULL); | |
3149 | free(ev); | |
3150 | return err; | |
3151 | } | |
3152 | ||
802c9048 JO |
3153 | int |
3154 | perf_event__synthesize_event_update_name(struct perf_tool *tool, | |
3155 | struct perf_evsel *evsel, | |
3156 | perf_event__handler_t process) | |
3157 | { | |
3158 | struct event_update_event *ev; | |
3159 | size_t len = strlen(evsel->name); | |
3160 | int err; | |
3161 | ||
3162 | ev = event_update_event__new(len + 1, PERF_EVENT_UPDATE__NAME, evsel->id[0]); | |
3163 | if (ev == NULL) | |
3164 | return -ENOMEM; | |
3165 | ||
3166 | strncpy(ev->data, evsel->name, len); | |
3167 | err = process(tool, (union perf_event*) ev, NULL, NULL); | |
3168 | free(ev); | |
3169 | return err; | |
3170 | } | |
daeecbc0 | 3171 | |
86ebb09f JO |
3172 | int |
3173 | perf_event__synthesize_event_update_cpus(struct perf_tool *tool, | |
3174 | struct perf_evsel *evsel, | |
3175 | perf_event__handler_t process) | |
3176 | { | |
3177 | size_t size = sizeof(struct event_update_event); | |
3178 | struct event_update_event *ev; | |
3179 | int max, err; | |
3180 | u16 type; | |
3181 | ||
3182 | if (!evsel->own_cpus) | |
3183 | return 0; | |
3184 | ||
3185 | ev = cpu_map_data__alloc(evsel->own_cpus, &size, &type, &max); | |
3186 | if (!ev) | |
3187 | return -ENOMEM; | |
3188 | ||
3189 | ev->header.type = PERF_RECORD_EVENT_UPDATE; | |
3190 | ev->header.size = (u16)size; | |
3191 | ev->type = PERF_EVENT_UPDATE__CPUS; | |
3192 | ev->id = evsel->id[0]; | |
3193 | ||
3194 | cpu_map_data__synthesize((struct cpu_map_data *) ev->data, | |
3195 | evsel->own_cpus, | |
3196 | type, max); | |
3197 | ||
3198 | err = process(tool, (union perf_event*) ev, NULL, NULL); | |
3199 | free(ev); | |
3200 | return err; | |
3201 | } | |
3202 | ||
c853f939 JO |
3203 | size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp) |
3204 | { | |
3205 | struct event_update_event *ev = &event->event_update; | |
3206 | struct event_update_event_scale *ev_scale; | |
3207 | struct event_update_event_cpus *ev_cpus; | |
3208 | struct cpu_map *map; | |
3209 | size_t ret; | |
3210 | ||
3211 | ret = fprintf(fp, "\n... id: %" PRIu64 "\n", ev->id); | |
3212 | ||
3213 | switch (ev->type) { | |
3214 | case PERF_EVENT_UPDATE__SCALE: | |
3215 | ev_scale = (struct event_update_event_scale *) ev->data; | |
3216 | ret += fprintf(fp, "... scale: %f\n", ev_scale->scale); | |
3217 | break; | |
3218 | case PERF_EVENT_UPDATE__UNIT: | |
3219 | ret += fprintf(fp, "... unit: %s\n", ev->data); | |
3220 | break; | |
3221 | case PERF_EVENT_UPDATE__NAME: | |
3222 | ret += fprintf(fp, "... name: %s\n", ev->data); | |
3223 | break; | |
3224 | case PERF_EVENT_UPDATE__CPUS: | |
3225 | ev_cpus = (struct event_update_event_cpus *) ev->data; | |
3226 | ret += fprintf(fp, "... "); | |
3227 | ||
3228 | map = cpu_map__new_data(&ev_cpus->cpus); | |
3229 | if (map) | |
3230 | ret += cpu_map__fprintf(map, fp); | |
3231 | else | |
3232 | ret += fprintf(fp, "failed to get cpus\n"); | |
3233 | break; | |
3234 | default: | |
3235 | ret += fprintf(fp, "... unknown type\n"); | |
3236 | break; | |
3237 | } | |
3238 | ||
3239 | return ret; | |
3240 | } | |
86ebb09f | 3241 | |
45694aa7 | 3242 | int perf_event__synthesize_attrs(struct perf_tool *tool, |
d20deb64 | 3243 | struct perf_session *session, |
a91e5431 | 3244 | perf_event__handler_t process) |
2c46dbb5 | 3245 | { |
6606f873 | 3246 | struct perf_evsel *evsel; |
a91e5431 | 3247 | int err = 0; |
2c46dbb5 | 3248 | |
e5cadb93 | 3249 | evlist__for_each_entry(session->evlist, evsel) { |
6606f873 RR |
3250 | err = perf_event__synthesize_attr(tool, &evsel->attr, evsel->ids, |
3251 | evsel->id, process); | |
2c46dbb5 TZ |
3252 | if (err) { |
3253 | pr_debug("failed to create perf header attribute\n"); | |
3254 | return err; | |
3255 | } | |
3256 | } | |
3257 | ||
3258 | return err; | |
3259 | } | |
3260 | ||
47c3d109 AH |
3261 | int perf_event__process_attr(struct perf_tool *tool __maybe_unused, |
3262 | union perf_event *event, | |
10d0f086 | 3263 | struct perf_evlist **pevlist) |
2c46dbb5 | 3264 | { |
f4d83436 | 3265 | u32 i, ids, n_ids; |
a91e5431 | 3266 | struct perf_evsel *evsel; |
10d0f086 | 3267 | struct perf_evlist *evlist = *pevlist; |
2c46dbb5 | 3268 | |
10d0f086 | 3269 | if (evlist == NULL) { |
334fe7a3 | 3270 | *pevlist = evlist = perf_evlist__new(); |
10d0f086 | 3271 | if (evlist == NULL) |
a91e5431 ACM |
3272 | return -ENOMEM; |
3273 | } | |
3274 | ||
ef503831 | 3275 | evsel = perf_evsel__new(&event->attr.attr); |
a91e5431 | 3276 | if (evsel == NULL) |
2c46dbb5 TZ |
3277 | return -ENOMEM; |
3278 | ||
10d0f086 | 3279 | perf_evlist__add(evlist, evsel); |
a91e5431 | 3280 | |
8115d60c ACM |
3281 | ids = event->header.size; |
3282 | ids -= (void *)&event->attr.id - (void *)event; | |
2c46dbb5 | 3283 | n_ids = ids / sizeof(u64); |
a91e5431 ACM |
3284 | /* |
3285 | * We don't have the cpu and thread maps on the header, so | |
3286 | * for allocating the perf_sample_id table we fake 1 cpu and | |
3287 | * hattr->ids threads. | |
3288 | */ | |
3289 | if (perf_evsel__alloc_id(evsel, 1, n_ids)) | |
3290 | return -ENOMEM; | |
2c46dbb5 TZ |
3291 | |
3292 | for (i = 0; i < n_ids; i++) { | |
10d0f086 | 3293 | perf_evlist__id_add(evlist, evsel, 0, i, event->attr.id[i]); |
2c46dbb5 TZ |
3294 | } |
3295 | ||
7e0d6fc9 AH |
3296 | symbol_conf.nr_events = evlist->nr_entries; |
3297 | ||
2c46dbb5 TZ |
3298 | return 0; |
3299 | } | |
cd19a035 | 3300 | |
ffe77725 JO |
3301 | int perf_event__process_event_update(struct perf_tool *tool __maybe_unused, |
3302 | union perf_event *event, | |
3303 | struct perf_evlist **pevlist) | |
3304 | { | |
3305 | struct event_update_event *ev = &event->event_update; | |
daeecbc0 | 3306 | struct event_update_event_scale *ev_scale; |
86ebb09f | 3307 | struct event_update_event_cpus *ev_cpus; |
ffe77725 JO |
3308 | struct perf_evlist *evlist; |
3309 | struct perf_evsel *evsel; | |
86ebb09f | 3310 | struct cpu_map *map; |
ffe77725 JO |
3311 | |
3312 | if (!pevlist || *pevlist == NULL) | |
3313 | return -EINVAL; | |
3314 | ||
3315 | evlist = *pevlist; | |
3316 | ||
3317 | evsel = perf_evlist__id2evsel(evlist, ev->id); | |
3318 | if (evsel == NULL) | |
3319 | return -EINVAL; | |
3320 | ||
a6e52817 JO |
3321 | switch (ev->type) { |
3322 | case PERF_EVENT_UPDATE__UNIT: | |
3323 | evsel->unit = strdup(ev->data); | |
daeecbc0 | 3324 | break; |
802c9048 JO |
3325 | case PERF_EVENT_UPDATE__NAME: |
3326 | evsel->name = strdup(ev->data); | |
3327 | break; | |
daeecbc0 JO |
3328 | case PERF_EVENT_UPDATE__SCALE: |
3329 | ev_scale = (struct event_update_event_scale *) ev->data; | |
3330 | evsel->scale = ev_scale->scale; | |
8434a2ec | 3331 | break; |
86ebb09f JO |
3332 | case PERF_EVENT_UPDATE__CPUS: |
3333 | ev_cpus = (struct event_update_event_cpus *) ev->data; | |
3334 | ||
3335 | map = cpu_map__new_data(&ev_cpus->cpus); | |
3336 | if (map) | |
3337 | evsel->own_cpus = map; | |
3338 | else | |
3339 | pr_err("failed to get event_update cpus\n"); | |
a6e52817 JO |
3340 | default: |
3341 | break; | |
3342 | } | |
3343 | ||
ffe77725 JO |
3344 | return 0; |
3345 | } | |
3346 | ||
45694aa7 | 3347 | int perf_event__synthesize_tracing_data(struct perf_tool *tool, int fd, |
d20deb64 | 3348 | struct perf_evlist *evlist, |
743eb868 | 3349 | perf_event__handler_t process) |
9215545e | 3350 | { |
8115d60c | 3351 | union perf_event ev; |
29208e57 | 3352 | struct tracing_data *tdata; |
9215545e | 3353 | ssize_t size = 0, aligned_size = 0, padding; |
ccebbeb6 | 3354 | struct feat_fd ff; |
1d037ca1 | 3355 | int err __maybe_unused = 0; |
9215545e | 3356 | |
29208e57 JO |
3357 | /* |
3358 | * We are going to store the size of the data followed | |
3359 | * by the data contents. Since the fd descriptor is a pipe, | |
3360 | * we cannot seek back to store the size of the data once | |
3361 | * we know it. Instead we: | |
3362 | * | |
3363 | * - write the tracing data to the temp file | |
3364 | * - get/write the data size to pipe | |
3365 | * - write the tracing data from the temp file | |
3366 | * to the pipe | |
3367 | */ | |
3368 | tdata = tracing_data_get(&evlist->entries, fd, true); | |
3369 | if (!tdata) | |
3370 | return -1; | |
3371 | ||
9215545e TZ |
3372 | memset(&ev, 0, sizeof(ev)); |
3373 | ||
3374 | ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA; | |
29208e57 | 3375 | size = tdata->size; |
9ac3e487 | 3376 | aligned_size = PERF_ALIGN(size, sizeof(u64)); |
9215545e TZ |
3377 | padding = aligned_size - size; |
3378 | ev.tracing_data.header.size = sizeof(ev.tracing_data); | |
3379 | ev.tracing_data.size = aligned_size; | |
3380 | ||
45694aa7 | 3381 | process(tool, &ev, NULL, NULL); |
9215545e | 3382 | |
29208e57 JO |
3383 | /* |
3384 | * The put function will copy all the tracing data | |
3385 | * stored in temp file to the pipe. | |
3386 | */ | |
3387 | tracing_data_put(tdata); | |
3388 | ||
ccebbeb6 DCC |
3389 | ff = (struct feat_fd){ .fd = fd }; |
3390 | if (write_padded(&ff, NULL, 0, padding)) | |
2ff5365d | 3391 | return -1; |
9215545e TZ |
3392 | |
3393 | return aligned_size; | |
3394 | } | |
3395 | ||
47c3d109 AH |
3396 | int perf_event__process_tracing_data(struct perf_tool *tool __maybe_unused, |
3397 | union perf_event *event, | |
8115d60c | 3398 | struct perf_session *session) |
9215545e | 3399 | { |
8115d60c | 3400 | ssize_t size_read, padding, size = event->tracing_data.size; |
cc9784bd JO |
3401 | int fd = perf_data_file__fd(session->file); |
3402 | off_t offset = lseek(fd, 0, SEEK_CUR); | |
9215545e TZ |
3403 | char buf[BUFSIZ]; |
3404 | ||
3405 | /* setup for reading amidst mmap */ | |
cc9784bd | 3406 | lseek(fd, offset + sizeof(struct tracing_data_event), |
9215545e TZ |
3407 | SEEK_SET); |
3408 | ||
29f5ffd3 | 3409 | size_read = trace_report(fd, &session->tevent, |
da378962 | 3410 | session->repipe); |
9ac3e487 | 3411 | padding = PERF_ALIGN(size_read, sizeof(u64)) - size_read; |
9215545e | 3412 | |
cc9784bd | 3413 | if (readn(fd, buf, padding) < 0) { |
2caa48a2 ACM |
3414 | pr_err("%s: reading input file", __func__); |
3415 | return -1; | |
3416 | } | |
454c407e TZ |
3417 | if (session->repipe) { |
3418 | int retw = write(STDOUT_FILENO, buf, padding); | |
2caa48a2 ACM |
3419 | if (retw <= 0 || retw != padding) { |
3420 | pr_err("%s: repiping tracing data padding", __func__); | |
3421 | return -1; | |
3422 | } | |
454c407e | 3423 | } |
9215545e | 3424 | |
2caa48a2 ACM |
3425 | if (size_read + padding != size) { |
3426 | pr_err("%s: tracing data size mismatch", __func__); | |
3427 | return -1; | |
3428 | } | |
9215545e | 3429 | |
831394bd | 3430 | perf_evlist__prepare_tracepoint_events(session->evlist, |
29f5ffd3 | 3431 | session->tevent.pevent); |
8b6ee4c5 | 3432 | |
9215545e TZ |
3433 | return size_read + padding; |
3434 | } | |
c7929e47 | 3435 | |
45694aa7 | 3436 | int perf_event__synthesize_build_id(struct perf_tool *tool, |
d20deb64 | 3437 | struct dso *pos, u16 misc, |
8115d60c | 3438 | perf_event__handler_t process, |
743eb868 | 3439 | struct machine *machine) |
c7929e47 | 3440 | { |
8115d60c | 3441 | union perf_event ev; |
c7929e47 TZ |
3442 | size_t len; |
3443 | int err = 0; | |
3444 | ||
3445 | if (!pos->hit) | |
3446 | return err; | |
3447 | ||
3448 | memset(&ev, 0, sizeof(ev)); | |
3449 | ||
3450 | len = pos->long_name_len + 1; | |
9ac3e487 | 3451 | len = PERF_ALIGN(len, NAME_ALIGN); |
c7929e47 TZ |
3452 | memcpy(&ev.build_id.build_id, pos->build_id, sizeof(pos->build_id)); |
3453 | ev.build_id.header.type = PERF_RECORD_HEADER_BUILD_ID; | |
3454 | ev.build_id.header.misc = misc; | |
23346f21 | 3455 | ev.build_id.pid = machine->pid; |
c7929e47 TZ |
3456 | ev.build_id.header.size = sizeof(ev.build_id) + len; |
3457 | memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len); | |
3458 | ||
45694aa7 | 3459 | err = process(tool, &ev, NULL, machine); |
c7929e47 TZ |
3460 | |
3461 | return err; | |
3462 | } | |
3463 | ||
1d037ca1 | 3464 | int perf_event__process_build_id(struct perf_tool *tool __maybe_unused, |
d20deb64 | 3465 | union perf_event *event, |
8115d60c | 3466 | struct perf_session *session) |
c7929e47 | 3467 | { |
8115d60c ACM |
3468 | __event_process_build_id(&event->build_id, |
3469 | event->build_id.filename, | |
a1645ce1 | 3470 | session); |
c7929e47 TZ |
3471 | return 0; |
3472 | } |