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