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Commit | Line | Data |
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f8a95309 ACM |
1 | /* |
2 | * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com> | |
3 | * | |
4 | * Parts came from builtin-{top,stat,record}.c, see those files for further | |
5 | * copyright notes. | |
6 | * | |
7 | * Released under the GPL v2. (and only v2, not any later version) | |
8 | */ | |
9 | ||
936be503 DA |
10 | #include <byteswap.h> |
11 | #include "asm/bug.h" | |
69aad6f1 | 12 | #include "evsel.h" |
70082dd9 | 13 | #include "evlist.h" |
69aad6f1 | 14 | #include "util.h" |
86bd5e86 | 15 | #include "cpumap.h" |
fd78260b | 16 | #include "thread_map.h" |
12864b31 | 17 | #include "target.h" |
69aad6f1 | 18 | |
c52b12ed | 19 | #define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y)) |
727ab04e | 20 | #define GROUP_FD(group_fd, cpu) (*(int *)xyarray__entry(group_fd, cpu, 0)) |
c52b12ed | 21 | |
c2a70653 ACM |
22 | int __perf_evsel__sample_size(u64 sample_type) |
23 | { | |
24 | u64 mask = sample_type & PERF_SAMPLE_MASK; | |
25 | int size = 0; | |
26 | int i; | |
27 | ||
28 | for (i = 0; i < 64; i++) { | |
29 | if (mask & (1ULL << i)) | |
30 | size++; | |
31 | } | |
32 | ||
33 | size *= sizeof(u64); | |
34 | ||
35 | return size; | |
36 | } | |
37 | ||
4bf9ce1b | 38 | void hists__init(struct hists *hists) |
0e2a5f10 ACM |
39 | { |
40 | memset(hists, 0, sizeof(*hists)); | |
41 | hists->entries_in_array[0] = hists->entries_in_array[1] = RB_ROOT; | |
42 | hists->entries_in = &hists->entries_in_array[0]; | |
43 | hists->entries_collapsed = RB_ROOT; | |
44 | hists->entries = RB_ROOT; | |
45 | pthread_mutex_init(&hists->lock, NULL); | |
46 | } | |
47 | ||
ef1d1af2 ACM |
48 | void perf_evsel__init(struct perf_evsel *evsel, |
49 | struct perf_event_attr *attr, int idx) | |
50 | { | |
51 | evsel->idx = idx; | |
52 | evsel->attr = *attr; | |
53 | INIT_LIST_HEAD(&evsel->node); | |
1980c2eb | 54 | hists__init(&evsel->hists); |
ef1d1af2 ACM |
55 | } |
56 | ||
23a2f3ab | 57 | struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr, int idx) |
69aad6f1 ACM |
58 | { |
59 | struct perf_evsel *evsel = zalloc(sizeof(*evsel)); | |
60 | ||
ef1d1af2 ACM |
61 | if (evsel != NULL) |
62 | perf_evsel__init(evsel, attr, idx); | |
69aad6f1 ACM |
63 | |
64 | return evsel; | |
65 | } | |
66 | ||
5090c6ae NK |
67 | void perf_evsel__config(struct perf_evsel *evsel, struct perf_record_opts *opts, |
68 | struct perf_evsel *first) | |
0f82ebc4 ACM |
69 | { |
70 | struct perf_event_attr *attr = &evsel->attr; | |
71 | int track = !evsel->idx; /* only the first counter needs these */ | |
72 | ||
5e1c81d9 | 73 | attr->disabled = 1; |
808e1226 | 74 | attr->sample_id_all = opts->sample_id_all_missing ? 0 : 1; |
0f82ebc4 ACM |
75 | attr->inherit = !opts->no_inherit; |
76 | attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED | | |
77 | PERF_FORMAT_TOTAL_TIME_RUNNING | | |
78 | PERF_FORMAT_ID; | |
79 | ||
80 | attr->sample_type |= PERF_SAMPLE_IP | PERF_SAMPLE_TID; | |
81 | ||
82 | /* | |
83 | * We default some events to a 1 default interval. But keep | |
84 | * it a weak assumption overridable by the user. | |
85 | */ | |
86 | if (!attr->sample_period || (opts->user_freq != UINT_MAX && | |
87 | opts->user_interval != ULLONG_MAX)) { | |
88 | if (opts->freq) { | |
89 | attr->sample_type |= PERF_SAMPLE_PERIOD; | |
90 | attr->freq = 1; | |
91 | attr->sample_freq = opts->freq; | |
92 | } else { | |
93 | attr->sample_period = opts->default_interval; | |
94 | } | |
95 | } | |
96 | ||
97 | if (opts->no_samples) | |
98 | attr->sample_freq = 0; | |
99 | ||
100 | if (opts->inherit_stat) | |
101 | attr->inherit_stat = 1; | |
102 | ||
103 | if (opts->sample_address) { | |
104 | attr->sample_type |= PERF_SAMPLE_ADDR; | |
105 | attr->mmap_data = track; | |
106 | } | |
107 | ||
108 | if (opts->call_graph) | |
109 | attr->sample_type |= PERF_SAMPLE_CALLCHAIN; | |
110 | ||
e40ee742 | 111 | if (perf_target__has_cpu(&opts->target)) |
0f82ebc4 ACM |
112 | attr->sample_type |= PERF_SAMPLE_CPU; |
113 | ||
3e76ac78 AV |
114 | if (opts->period) |
115 | attr->sample_type |= PERF_SAMPLE_PERIOD; | |
116 | ||
808e1226 | 117 | if (!opts->sample_id_all_missing && |
d67356e7 | 118 | (opts->sample_time || !opts->no_inherit || |
aa22dd49 | 119 | perf_target__has_cpu(&opts->target))) |
0f82ebc4 ACM |
120 | attr->sample_type |= PERF_SAMPLE_TIME; |
121 | ||
122 | if (opts->raw_samples) { | |
123 | attr->sample_type |= PERF_SAMPLE_TIME; | |
124 | attr->sample_type |= PERF_SAMPLE_RAW; | |
125 | attr->sample_type |= PERF_SAMPLE_CPU; | |
126 | } | |
127 | ||
128 | if (opts->no_delay) { | |
129 | attr->watermark = 0; | |
130 | attr->wakeup_events = 1; | |
131 | } | |
bdfebd84 RAV |
132 | if (opts->branch_stack) { |
133 | attr->sample_type |= PERF_SAMPLE_BRANCH_STACK; | |
134 | attr->branch_sample_type = opts->branch_stack; | |
135 | } | |
0f82ebc4 ACM |
136 | |
137 | attr->mmap = track; | |
138 | attr->comm = track; | |
139 | ||
d67356e7 NK |
140 | if (perf_target__none(&opts->target) && |
141 | (!opts->group || evsel == first)) { | |
0f82ebc4 ACM |
142 | attr->enable_on_exec = 1; |
143 | } | |
144 | } | |
145 | ||
69aad6f1 ACM |
146 | int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads) |
147 | { | |
4af4c955 | 148 | int cpu, thread; |
69aad6f1 | 149 | evsel->fd = xyarray__new(ncpus, nthreads, sizeof(int)); |
4af4c955 DA |
150 | |
151 | if (evsel->fd) { | |
152 | for (cpu = 0; cpu < ncpus; cpu++) { | |
153 | for (thread = 0; thread < nthreads; thread++) { | |
154 | FD(evsel, cpu, thread) = -1; | |
155 | } | |
156 | } | |
157 | } | |
158 | ||
69aad6f1 ACM |
159 | return evsel->fd != NULL ? 0 : -ENOMEM; |
160 | } | |
161 | ||
70db7533 ACM |
162 | int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads) |
163 | { | |
a91e5431 ACM |
164 | evsel->sample_id = xyarray__new(ncpus, nthreads, sizeof(struct perf_sample_id)); |
165 | if (evsel->sample_id == NULL) | |
166 | return -ENOMEM; | |
167 | ||
168 | evsel->id = zalloc(ncpus * nthreads * sizeof(u64)); | |
169 | if (evsel->id == NULL) { | |
170 | xyarray__delete(evsel->sample_id); | |
171 | evsel->sample_id = NULL; | |
172 | return -ENOMEM; | |
173 | } | |
174 | ||
175 | return 0; | |
70db7533 ACM |
176 | } |
177 | ||
c52b12ed ACM |
178 | int perf_evsel__alloc_counts(struct perf_evsel *evsel, int ncpus) |
179 | { | |
180 | evsel->counts = zalloc((sizeof(*evsel->counts) + | |
181 | (ncpus * sizeof(struct perf_counts_values)))); | |
182 | return evsel->counts != NULL ? 0 : -ENOMEM; | |
183 | } | |
184 | ||
69aad6f1 ACM |
185 | void perf_evsel__free_fd(struct perf_evsel *evsel) |
186 | { | |
187 | xyarray__delete(evsel->fd); | |
188 | evsel->fd = NULL; | |
189 | } | |
190 | ||
70db7533 ACM |
191 | void perf_evsel__free_id(struct perf_evsel *evsel) |
192 | { | |
a91e5431 ACM |
193 | xyarray__delete(evsel->sample_id); |
194 | evsel->sample_id = NULL; | |
195 | free(evsel->id); | |
70db7533 ACM |
196 | evsel->id = NULL; |
197 | } | |
198 | ||
c52b12ed ACM |
199 | void perf_evsel__close_fd(struct perf_evsel *evsel, int ncpus, int nthreads) |
200 | { | |
201 | int cpu, thread; | |
202 | ||
203 | for (cpu = 0; cpu < ncpus; cpu++) | |
204 | for (thread = 0; thread < nthreads; ++thread) { | |
205 | close(FD(evsel, cpu, thread)); | |
206 | FD(evsel, cpu, thread) = -1; | |
207 | } | |
208 | } | |
209 | ||
ef1d1af2 | 210 | void perf_evsel__exit(struct perf_evsel *evsel) |
69aad6f1 ACM |
211 | { |
212 | assert(list_empty(&evsel->node)); | |
213 | xyarray__delete(evsel->fd); | |
a91e5431 ACM |
214 | xyarray__delete(evsel->sample_id); |
215 | free(evsel->id); | |
ef1d1af2 ACM |
216 | } |
217 | ||
218 | void perf_evsel__delete(struct perf_evsel *evsel) | |
219 | { | |
220 | perf_evsel__exit(evsel); | |
023695d9 | 221 | close_cgroup(evsel->cgrp); |
f0c55bcf | 222 | free(evsel->name); |
69aad6f1 ACM |
223 | free(evsel); |
224 | } | |
c52b12ed ACM |
225 | |
226 | int __perf_evsel__read_on_cpu(struct perf_evsel *evsel, | |
227 | int cpu, int thread, bool scale) | |
228 | { | |
229 | struct perf_counts_values count; | |
230 | size_t nv = scale ? 3 : 1; | |
231 | ||
232 | if (FD(evsel, cpu, thread) < 0) | |
233 | return -EINVAL; | |
234 | ||
4eed11d5 ACM |
235 | if (evsel->counts == NULL && perf_evsel__alloc_counts(evsel, cpu + 1) < 0) |
236 | return -ENOMEM; | |
237 | ||
c52b12ed ACM |
238 | if (readn(FD(evsel, cpu, thread), &count, nv * sizeof(u64)) < 0) |
239 | return -errno; | |
240 | ||
241 | if (scale) { | |
242 | if (count.run == 0) | |
243 | count.val = 0; | |
244 | else if (count.run < count.ena) | |
245 | count.val = (u64)((double)count.val * count.ena / count.run + 0.5); | |
246 | } else | |
247 | count.ena = count.run = 0; | |
248 | ||
249 | evsel->counts->cpu[cpu] = count; | |
250 | return 0; | |
251 | } | |
252 | ||
253 | int __perf_evsel__read(struct perf_evsel *evsel, | |
254 | int ncpus, int nthreads, bool scale) | |
255 | { | |
256 | size_t nv = scale ? 3 : 1; | |
257 | int cpu, thread; | |
258 | struct perf_counts_values *aggr = &evsel->counts->aggr, count; | |
259 | ||
52bcd994 | 260 | aggr->val = aggr->ena = aggr->run = 0; |
c52b12ed ACM |
261 | |
262 | for (cpu = 0; cpu < ncpus; cpu++) { | |
263 | for (thread = 0; thread < nthreads; thread++) { | |
264 | if (FD(evsel, cpu, thread) < 0) | |
265 | continue; | |
266 | ||
267 | if (readn(FD(evsel, cpu, thread), | |
268 | &count, nv * sizeof(u64)) < 0) | |
269 | return -errno; | |
270 | ||
271 | aggr->val += count.val; | |
272 | if (scale) { | |
273 | aggr->ena += count.ena; | |
274 | aggr->run += count.run; | |
275 | } | |
276 | } | |
277 | } | |
278 | ||
279 | evsel->counts->scaled = 0; | |
280 | if (scale) { | |
281 | if (aggr->run == 0) { | |
282 | evsel->counts->scaled = -1; | |
283 | aggr->val = 0; | |
284 | return 0; | |
285 | } | |
286 | ||
287 | if (aggr->run < aggr->ena) { | |
288 | evsel->counts->scaled = 1; | |
289 | aggr->val = (u64)((double)aggr->val * aggr->ena / aggr->run + 0.5); | |
290 | } | |
291 | } else | |
292 | aggr->ena = aggr->run = 0; | |
293 | ||
294 | return 0; | |
295 | } | |
48290609 | 296 | |
0252208e | 297 | static int __perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus, |
727ab04e ACM |
298 | struct thread_map *threads, bool group, |
299 | struct xyarray *group_fds) | |
48290609 | 300 | { |
0252208e | 301 | int cpu, thread; |
023695d9 | 302 | unsigned long flags = 0; |
727ab04e | 303 | int pid = -1, err; |
48290609 | 304 | |
0252208e ACM |
305 | if (evsel->fd == NULL && |
306 | perf_evsel__alloc_fd(evsel, cpus->nr, threads->nr) < 0) | |
727ab04e | 307 | return -ENOMEM; |
4eed11d5 | 308 | |
023695d9 SE |
309 | if (evsel->cgrp) { |
310 | flags = PERF_FLAG_PID_CGROUP; | |
311 | pid = evsel->cgrp->fd; | |
312 | } | |
313 | ||
86bd5e86 | 314 | for (cpu = 0; cpu < cpus->nr; cpu++) { |
727ab04e | 315 | int group_fd = group_fds ? GROUP_FD(group_fds, cpu) : -1; |
9d04f178 | 316 | |
0252208e | 317 | for (thread = 0; thread < threads->nr; thread++) { |
023695d9 SE |
318 | |
319 | if (!evsel->cgrp) | |
320 | pid = threads->map[thread]; | |
321 | ||
0252208e | 322 | FD(evsel, cpu, thread) = sys_perf_event_open(&evsel->attr, |
023695d9 | 323 | pid, |
f08199d3 | 324 | cpus->map[cpu], |
023695d9 | 325 | group_fd, flags); |
727ab04e ACM |
326 | if (FD(evsel, cpu, thread) < 0) { |
327 | err = -errno; | |
0252208e | 328 | goto out_close; |
727ab04e | 329 | } |
f08199d3 ACM |
330 | |
331 | if (group && group_fd == -1) | |
332 | group_fd = FD(evsel, cpu, thread); | |
0252208e | 333 | } |
48290609 ACM |
334 | } |
335 | ||
336 | return 0; | |
337 | ||
338 | out_close: | |
0252208e ACM |
339 | do { |
340 | while (--thread >= 0) { | |
341 | close(FD(evsel, cpu, thread)); | |
342 | FD(evsel, cpu, thread) = -1; | |
343 | } | |
344 | thread = threads->nr; | |
345 | } while (--cpu >= 0); | |
727ab04e ACM |
346 | return err; |
347 | } | |
348 | ||
349 | void perf_evsel__close(struct perf_evsel *evsel, int ncpus, int nthreads) | |
350 | { | |
351 | if (evsel->fd == NULL) | |
352 | return; | |
353 | ||
354 | perf_evsel__close_fd(evsel, ncpus, nthreads); | |
355 | perf_evsel__free_fd(evsel); | |
356 | evsel->fd = NULL; | |
48290609 ACM |
357 | } |
358 | ||
0252208e ACM |
359 | static struct { |
360 | struct cpu_map map; | |
361 | int cpus[1]; | |
362 | } empty_cpu_map = { | |
363 | .map.nr = 1, | |
364 | .cpus = { -1, }, | |
365 | }; | |
366 | ||
367 | static struct { | |
368 | struct thread_map map; | |
369 | int threads[1]; | |
370 | } empty_thread_map = { | |
371 | .map.nr = 1, | |
372 | .threads = { -1, }, | |
373 | }; | |
374 | ||
f08199d3 | 375 | int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus, |
727ab04e ACM |
376 | struct thread_map *threads, bool group, |
377 | struct xyarray *group_fd) | |
48290609 | 378 | { |
0252208e ACM |
379 | if (cpus == NULL) { |
380 | /* Work around old compiler warnings about strict aliasing */ | |
381 | cpus = &empty_cpu_map.map; | |
48290609 ACM |
382 | } |
383 | ||
0252208e ACM |
384 | if (threads == NULL) |
385 | threads = &empty_thread_map.map; | |
48290609 | 386 | |
727ab04e | 387 | return __perf_evsel__open(evsel, cpus, threads, group, group_fd); |
48290609 ACM |
388 | } |
389 | ||
f08199d3 | 390 | int perf_evsel__open_per_cpu(struct perf_evsel *evsel, |
727ab04e ACM |
391 | struct cpu_map *cpus, bool group, |
392 | struct xyarray *group_fd) | |
48290609 | 393 | { |
727ab04e ACM |
394 | return __perf_evsel__open(evsel, cpus, &empty_thread_map.map, group, |
395 | group_fd); | |
0252208e | 396 | } |
48290609 | 397 | |
f08199d3 | 398 | int perf_evsel__open_per_thread(struct perf_evsel *evsel, |
727ab04e ACM |
399 | struct thread_map *threads, bool group, |
400 | struct xyarray *group_fd) | |
0252208e | 401 | { |
727ab04e ACM |
402 | return __perf_evsel__open(evsel, &empty_cpu_map.map, threads, group, |
403 | group_fd); | |
48290609 | 404 | } |
70082dd9 | 405 | |
8115d60c ACM |
406 | static int perf_event__parse_id_sample(const union perf_event *event, u64 type, |
407 | struct perf_sample *sample) | |
d0dd74e8 ACM |
408 | { |
409 | const u64 *array = event->sample.array; | |
410 | ||
411 | array += ((event->header.size - | |
412 | sizeof(event->header)) / sizeof(u64)) - 1; | |
413 | ||
414 | if (type & PERF_SAMPLE_CPU) { | |
415 | u32 *p = (u32 *)array; | |
416 | sample->cpu = *p; | |
417 | array--; | |
418 | } | |
419 | ||
420 | if (type & PERF_SAMPLE_STREAM_ID) { | |
421 | sample->stream_id = *array; | |
422 | array--; | |
423 | } | |
424 | ||
425 | if (type & PERF_SAMPLE_ID) { | |
426 | sample->id = *array; | |
427 | array--; | |
428 | } | |
429 | ||
430 | if (type & PERF_SAMPLE_TIME) { | |
431 | sample->time = *array; | |
432 | array--; | |
433 | } | |
434 | ||
435 | if (type & PERF_SAMPLE_TID) { | |
436 | u32 *p = (u32 *)array; | |
437 | sample->pid = p[0]; | |
438 | sample->tid = p[1]; | |
439 | } | |
440 | ||
441 | return 0; | |
442 | } | |
443 | ||
98e1da90 FW |
444 | static bool sample_overlap(const union perf_event *event, |
445 | const void *offset, u64 size) | |
446 | { | |
447 | const void *base = event; | |
448 | ||
449 | if (offset + size > base + event->header.size) | |
450 | return true; | |
451 | ||
452 | return false; | |
453 | } | |
454 | ||
8115d60c | 455 | int perf_event__parse_sample(const union perf_event *event, u64 type, |
a2854124 | 456 | int sample_size, bool sample_id_all, |
936be503 | 457 | struct perf_sample *data, bool swapped) |
d0dd74e8 ACM |
458 | { |
459 | const u64 *array; | |
460 | ||
936be503 DA |
461 | /* |
462 | * used for cross-endian analysis. See git commit 65014ab3 | |
463 | * for why this goofiness is needed. | |
464 | */ | |
465 | union { | |
466 | u64 val64; | |
467 | u32 val32[2]; | |
468 | } u; | |
469 | ||
f3bda2c9 | 470 | memset(data, 0, sizeof(*data)); |
d0dd74e8 ACM |
471 | data->cpu = data->pid = data->tid = -1; |
472 | data->stream_id = data->id = data->time = -1ULL; | |
a4a03fc7 | 473 | data->period = 1; |
d0dd74e8 ACM |
474 | |
475 | if (event->header.type != PERF_RECORD_SAMPLE) { | |
476 | if (!sample_id_all) | |
477 | return 0; | |
8115d60c | 478 | return perf_event__parse_id_sample(event, type, data); |
d0dd74e8 ACM |
479 | } |
480 | ||
481 | array = event->sample.array; | |
482 | ||
a2854124 FW |
483 | if (sample_size + sizeof(event->header) > event->header.size) |
484 | return -EFAULT; | |
485 | ||
d0dd74e8 ACM |
486 | if (type & PERF_SAMPLE_IP) { |
487 | data->ip = event->ip.ip; | |
488 | array++; | |
489 | } | |
490 | ||
491 | if (type & PERF_SAMPLE_TID) { | |
936be503 DA |
492 | u.val64 = *array; |
493 | if (swapped) { | |
494 | /* undo swap of u64, then swap on individual u32s */ | |
495 | u.val64 = bswap_64(u.val64); | |
496 | u.val32[0] = bswap_32(u.val32[0]); | |
497 | u.val32[1] = bswap_32(u.val32[1]); | |
498 | } | |
499 | ||
500 | data->pid = u.val32[0]; | |
501 | data->tid = u.val32[1]; | |
d0dd74e8 ACM |
502 | array++; |
503 | } | |
504 | ||
505 | if (type & PERF_SAMPLE_TIME) { | |
506 | data->time = *array; | |
507 | array++; | |
508 | } | |
509 | ||
7cec0922 | 510 | data->addr = 0; |
d0dd74e8 ACM |
511 | if (type & PERF_SAMPLE_ADDR) { |
512 | data->addr = *array; | |
513 | array++; | |
514 | } | |
515 | ||
516 | data->id = -1ULL; | |
517 | if (type & PERF_SAMPLE_ID) { | |
518 | data->id = *array; | |
519 | array++; | |
520 | } | |
521 | ||
522 | if (type & PERF_SAMPLE_STREAM_ID) { | |
523 | data->stream_id = *array; | |
524 | array++; | |
525 | } | |
526 | ||
527 | if (type & PERF_SAMPLE_CPU) { | |
936be503 DA |
528 | |
529 | u.val64 = *array; | |
530 | if (swapped) { | |
531 | /* undo swap of u64, then swap on individual u32s */ | |
532 | u.val64 = bswap_64(u.val64); | |
533 | u.val32[0] = bswap_32(u.val32[0]); | |
534 | } | |
535 | ||
536 | data->cpu = u.val32[0]; | |
d0dd74e8 ACM |
537 | array++; |
538 | } | |
539 | ||
540 | if (type & PERF_SAMPLE_PERIOD) { | |
541 | data->period = *array; | |
542 | array++; | |
543 | } | |
544 | ||
545 | if (type & PERF_SAMPLE_READ) { | |
f9d36996 | 546 | fprintf(stderr, "PERF_SAMPLE_READ is unsupported for now\n"); |
d0dd74e8 ACM |
547 | return -1; |
548 | } | |
549 | ||
550 | if (type & PERF_SAMPLE_CALLCHAIN) { | |
98e1da90 FW |
551 | if (sample_overlap(event, array, sizeof(data->callchain->nr))) |
552 | return -EFAULT; | |
553 | ||
d0dd74e8 | 554 | data->callchain = (struct ip_callchain *)array; |
98e1da90 FW |
555 | |
556 | if (sample_overlap(event, array, data->callchain->nr)) | |
557 | return -EFAULT; | |
558 | ||
d0dd74e8 ACM |
559 | array += 1 + data->callchain->nr; |
560 | } | |
561 | ||
562 | if (type & PERF_SAMPLE_RAW) { | |
8e303f20 JO |
563 | const u64 *pdata; |
564 | ||
936be503 DA |
565 | u.val64 = *array; |
566 | if (WARN_ONCE(swapped, | |
567 | "Endianness of raw data not corrected!\n")) { | |
568 | /* undo swap of u64, then swap on individual u32s */ | |
569 | u.val64 = bswap_64(u.val64); | |
570 | u.val32[0] = bswap_32(u.val32[0]); | |
571 | u.val32[1] = bswap_32(u.val32[1]); | |
572 | } | |
98e1da90 FW |
573 | |
574 | if (sample_overlap(event, array, sizeof(u32))) | |
575 | return -EFAULT; | |
576 | ||
936be503 | 577 | data->raw_size = u.val32[0]; |
8e303f20 | 578 | pdata = (void *) array + sizeof(u32); |
98e1da90 | 579 | |
8e303f20 | 580 | if (sample_overlap(event, pdata, data->raw_size)) |
98e1da90 FW |
581 | return -EFAULT; |
582 | ||
8e303f20 | 583 | data->raw_data = (void *) pdata; |
fa30c964 SE |
584 | |
585 | array = (void *)array + data->raw_size + sizeof(u32); | |
d0dd74e8 ACM |
586 | } |
587 | ||
b5387528 RAV |
588 | if (type & PERF_SAMPLE_BRANCH_STACK) { |
589 | u64 sz; | |
590 | ||
591 | data->branch_stack = (struct branch_stack *)array; | |
592 | array++; /* nr */ | |
593 | ||
594 | sz = data->branch_stack->nr * sizeof(struct branch_entry); | |
595 | sz /= sizeof(u64); | |
596 | array += sz; | |
597 | } | |
d0dd74e8 ACM |
598 | return 0; |
599 | } | |
74eec26f AV |
600 | |
601 | int perf_event__synthesize_sample(union perf_event *event, u64 type, | |
602 | const struct perf_sample *sample, | |
603 | bool swapped) | |
604 | { | |
605 | u64 *array; | |
606 | ||
607 | /* | |
608 | * used for cross-endian analysis. See git commit 65014ab3 | |
609 | * for why this goofiness is needed. | |
610 | */ | |
611 | union { | |
612 | u64 val64; | |
613 | u32 val32[2]; | |
614 | } u; | |
615 | ||
616 | array = event->sample.array; | |
617 | ||
618 | if (type & PERF_SAMPLE_IP) { | |
619 | event->ip.ip = sample->ip; | |
620 | array++; | |
621 | } | |
622 | ||
623 | if (type & PERF_SAMPLE_TID) { | |
624 | u.val32[0] = sample->pid; | |
625 | u.val32[1] = sample->tid; | |
626 | if (swapped) { | |
627 | /* | |
628 | * Inverse of what is done in perf_event__parse_sample | |
629 | */ | |
630 | u.val32[0] = bswap_32(u.val32[0]); | |
631 | u.val32[1] = bswap_32(u.val32[1]); | |
632 | u.val64 = bswap_64(u.val64); | |
633 | } | |
634 | ||
635 | *array = u.val64; | |
636 | array++; | |
637 | } | |
638 | ||
639 | if (type & PERF_SAMPLE_TIME) { | |
640 | *array = sample->time; | |
641 | array++; | |
642 | } | |
643 | ||
644 | if (type & PERF_SAMPLE_ADDR) { | |
645 | *array = sample->addr; | |
646 | array++; | |
647 | } | |
648 | ||
649 | if (type & PERF_SAMPLE_ID) { | |
650 | *array = sample->id; | |
651 | array++; | |
652 | } | |
653 | ||
654 | if (type & PERF_SAMPLE_STREAM_ID) { | |
655 | *array = sample->stream_id; | |
656 | array++; | |
657 | } | |
658 | ||
659 | if (type & PERF_SAMPLE_CPU) { | |
660 | u.val32[0] = sample->cpu; | |
661 | if (swapped) { | |
662 | /* | |
663 | * Inverse of what is done in perf_event__parse_sample | |
664 | */ | |
665 | u.val32[0] = bswap_32(u.val32[0]); | |
666 | u.val64 = bswap_64(u.val64); | |
667 | } | |
668 | *array = u.val64; | |
669 | array++; | |
670 | } | |
671 | ||
672 | if (type & PERF_SAMPLE_PERIOD) { | |
673 | *array = sample->period; | |
674 | array++; | |
675 | } | |
676 | ||
677 | return 0; | |
678 | } |