Commit | Line | Data |
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2025cf9e | 1 | // SPDX-License-Identifier: GPL-2.0-only |
718c602d AH |
2 | /* |
3 | * auxtrace.c: AUX area trace support | |
4 | * Copyright (c) 2013-2015, Intel Corporation. | |
718c602d AH |
5 | */ |
6 | ||
fd20e811 | 7 | #include <inttypes.h> |
718c602d AH |
8 | #include <sys/types.h> |
9 | #include <sys/mman.h> | |
10 | #include <stdbool.h> | |
1b36c03e AH |
11 | #include <string.h> |
12 | #include <limits.h> | |
13 | #include <errno.h> | |
718c602d AH |
14 | |
15 | #include <linux/kernel.h> | |
16 | #include <linux/perf_event.h> | |
17 | #include <linux/types.h> | |
18 | #include <linux/bitops.h> | |
19 | #include <linux/log2.h> | |
e5027893 | 20 | #include <linux/string.h> |
16bd4321 | 21 | #include <linux/time64.h> |
718c602d | 22 | |
e5027893 | 23 | #include <sys/param.h> |
9e0cc4fe | 24 | #include <stdlib.h> |
85ed4729 | 25 | #include <stdio.h> |
e5027893 | 26 | #include <linux/list.h> |
7f7c536f | 27 | #include <linux/zalloc.h> |
9e0cc4fe | 28 | |
a7fdd30a | 29 | #include "config.h" |
718c602d | 30 | #include "evlist.h" |
1b36c03e AH |
31 | #include "dso.h" |
32 | #include "map.h" | |
33 | #include "pmu.h" | |
34 | #include "evsel.h" | |
eb7a52d4 | 35 | #include "evsel_config.h" |
7cadca8e | 36 | #include "symbol.h" |
40c7d246 | 37 | #include "util/perf_api_probe.h" |
ea49e01c | 38 | #include "util/synthetic-events.h" |
718c602d AH |
39 | #include "thread_map.h" |
40 | #include "asm/bug.h" | |
41 | #include "auxtrace.h" | |
42 | ||
c3278f02 AH |
43 | #include <linux/hash.h> |
44 | ||
9e0cc4fe | 45 | #include "event.h" |
aeb00b1a | 46 | #include "record.h" |
85ed4729 | 47 | #include "session.h" |
9e0cc4fe | 48 | #include "debug.h" |
4b6ab94e | 49 | #include <subcmd/parse-options.h> |
9e0cc4fe | 50 | |
440a23b3 | 51 | #include "cs-etm.h" |
5efb1d54 | 52 | #include "intel-pt.h" |
d0170af7 | 53 | #include "intel-bts.h" |
ffd3d18c | 54 | #include "arm-spe.h" |
5e91e57e | 55 | #include "hisi-ptt.h" |
b96e6615 | 56 | #include "s390-cpumsf.h" |
e0fcfb08 | 57 | #include "util/mmap.h" |
5efb1d54 | 58 | |
3052ba56 | 59 | #include <linux/ctype.h> |
3d689ed6 | 60 | #include "symbol/kallsyms.h" |
fb71c86c | 61 | #include <internal/lib.h> |
9823147d | 62 | #include "util/sample.h" |
3d689ed6 | 63 | |
eb7a52d4 AH |
64 | /* |
65 | * Make a group from 'leader' to 'last', requiring that the events were not | |
66 | * already grouped to a different leader. | |
67 | */ | |
64b4778b | 68 | static int evlist__regroup(struct evlist *evlist, struct evsel *leader, struct evsel *last) |
eb7a52d4 AH |
69 | { |
70 | struct evsel *evsel; | |
71 | bool grp; | |
72 | ||
c754c382 | 73 | if (!evsel__is_group_leader(leader)) |
eb7a52d4 AH |
74 | return -EINVAL; |
75 | ||
76 | grp = false; | |
77 | evlist__for_each_entry(evlist, evsel) { | |
78 | if (grp) { | |
fba7c866 JO |
79 | if (!(evsel__leader(evsel) == leader || |
80 | (evsel__leader(evsel) == evsel && | |
eb7a52d4 AH |
81 | evsel->core.nr_members <= 1))) |
82 | return -EINVAL; | |
83 | } else if (evsel == leader) { | |
84 | grp = true; | |
85 | } | |
86 | if (evsel == last) | |
87 | break; | |
88 | } | |
89 | ||
90 | grp = false; | |
91 | evlist__for_each_entry(evlist, evsel) { | |
92 | if (grp) { | |
fba7c866 JO |
93 | if (!evsel__has_leader(evsel, leader)) { |
94 | evsel__set_leader(evsel, leader); | |
eb7a52d4 AH |
95 | if (leader->core.nr_members < 1) |
96 | leader->core.nr_members = 1; | |
97 | leader->core.nr_members += 1; | |
98 | } | |
99 | } else if (evsel == leader) { | |
100 | grp = true; | |
101 | } | |
102 | if (evsel == last) | |
103 | break; | |
104 | } | |
105 | ||
106 | return 0; | |
107 | } | |
108 | ||
2e2967f4 AH |
109 | static bool auxtrace__dont_decode(struct perf_session *session) |
110 | { | |
111 | return !session->itrace_synth_opts || | |
112 | session->itrace_synth_opts->dont_decode; | |
113 | } | |
114 | ||
718c602d AH |
115 | int auxtrace_mmap__mmap(struct auxtrace_mmap *mm, |
116 | struct auxtrace_mmap_params *mp, | |
117 | void *userpg, int fd) | |
118 | { | |
119 | struct perf_event_mmap_page *pc = userpg; | |
120 | ||
718c602d AH |
121 | WARN_ONCE(mm->base, "Uninitialized auxtrace_mmap\n"); |
122 | ||
123 | mm->userpg = userpg; | |
124 | mm->mask = mp->mask; | |
125 | mm->len = mp->len; | |
126 | mm->prev = 0; | |
127 | mm->idx = mp->idx; | |
128 | mm->tid = mp->tid; | |
6d18804b | 129 | mm->cpu = mp->cpu.cpu; |
718c602d | 130 | |
d01508f2 | 131 | if (!mp->len || !mp->mmap_needed) { |
718c602d AH |
132 | mm->base = NULL; |
133 | return 0; | |
134 | } | |
135 | ||
136 | pc->aux_offset = mp->offset; | |
137 | pc->aux_size = mp->len; | |
138 | ||
139 | mm->base = mmap(NULL, mp->len, mp->prot, MAP_SHARED, fd, mp->offset); | |
140 | if (mm->base == MAP_FAILED) { | |
141 | pr_debug2("failed to mmap AUX area\n"); | |
142 | mm->base = NULL; | |
143 | return -1; | |
144 | } | |
145 | ||
146 | return 0; | |
147 | } | |
148 | ||
149 | void auxtrace_mmap__munmap(struct auxtrace_mmap *mm) | |
150 | { | |
151 | if (mm->base) { | |
152 | munmap(mm->base, mm->len); | |
153 | mm->base = NULL; | |
154 | } | |
155 | } | |
156 | ||
157 | void auxtrace_mmap_params__init(struct auxtrace_mmap_params *mp, | |
158 | off_t auxtrace_offset, | |
159 | unsigned int auxtrace_pages, | |
160 | bool auxtrace_overwrite) | |
161 | { | |
162 | if (auxtrace_pages) { | |
163 | mp->offset = auxtrace_offset; | |
164 | mp->len = auxtrace_pages * (size_t)page_size; | |
165 | mp->mask = is_power_of_2(mp->len) ? mp->len - 1 : 0; | |
166 | mp->prot = PROT_READ | (auxtrace_overwrite ? 0 : PROT_WRITE); | |
167 | pr_debug2("AUX area mmap length %zu\n", mp->len); | |
168 | } else { | |
169 | mp->len = 0; | |
170 | } | |
171 | } | |
172 | ||
173 | void auxtrace_mmap_params__set_idx(struct auxtrace_mmap_params *mp, | |
d01508f2 | 174 | struct evlist *evlist, |
84bd5aba | 175 | struct evsel *evsel, int idx) |
718c602d | 176 | { |
3e5deb70 | 177 | bool per_cpu = !perf_cpu_map__has_any_cpu(evlist->core.user_requested_cpus); |
84bd5aba | 178 | |
d01508f2 AH |
179 | mp->mmap_needed = evsel->needs_auxtrace_mmap; |
180 | ||
181 | if (!mp->mmap_needed) | |
182 | return; | |
183 | ||
718c602d AH |
184 | mp->idx = idx; |
185 | ||
186 | if (per_cpu) { | |
7be1fedd | 187 | mp->cpu = perf_cpu_map__cpu(evlist->core.all_cpus, idx); |
03617c22 | 188 | if (evlist->core.threads) |
a2f354e3 | 189 | mp->tid = perf_thread_map__pid(evlist->core.threads, 0); |
718c602d AH |
190 | else |
191 | mp->tid = -1; | |
192 | } else { | |
6d18804b | 193 | mp->cpu.cpu = -1; |
a2f354e3 | 194 | mp->tid = perf_thread_map__pid(evlist->core.threads, idx); |
718c602d AH |
195 | } |
196 | } | |
9e0cc4fe | 197 | |
e5027893 AH |
198 | #define AUXTRACE_INIT_NR_QUEUES 32 |
199 | ||
200 | static struct auxtrace_queue *auxtrace_alloc_queue_array(unsigned int nr_queues) | |
201 | { | |
202 | struct auxtrace_queue *queue_array; | |
203 | unsigned int max_nr_queues, i; | |
204 | ||
205 | max_nr_queues = UINT_MAX / sizeof(struct auxtrace_queue); | |
206 | if (nr_queues > max_nr_queues) | |
207 | return NULL; | |
208 | ||
209 | queue_array = calloc(nr_queues, sizeof(struct auxtrace_queue)); | |
210 | if (!queue_array) | |
211 | return NULL; | |
212 | ||
213 | for (i = 0; i < nr_queues; i++) { | |
214 | INIT_LIST_HEAD(&queue_array[i].head); | |
215 | queue_array[i].priv = NULL; | |
216 | } | |
217 | ||
218 | return queue_array; | |
219 | } | |
220 | ||
ee73fe99 | 221 | int auxtrace_queues__init_nr(struct auxtrace_queues *queues, int nr_queues) |
e5027893 | 222 | { |
ee73fe99 | 223 | queues->nr_queues = nr_queues; |
e5027893 AH |
224 | queues->queue_array = auxtrace_alloc_queue_array(queues->nr_queues); |
225 | if (!queues->queue_array) | |
226 | return -ENOMEM; | |
227 | return 0; | |
228 | } | |
229 | ||
ee73fe99 JC |
230 | int auxtrace_queues__init(struct auxtrace_queues *queues) |
231 | { | |
232 | return auxtrace_queues__init_nr(queues, AUXTRACE_INIT_NR_QUEUES); | |
233 | } | |
234 | ||
e5027893 AH |
235 | static int auxtrace_queues__grow(struct auxtrace_queues *queues, |
236 | unsigned int new_nr_queues) | |
237 | { | |
238 | unsigned int nr_queues = queues->nr_queues; | |
239 | struct auxtrace_queue *queue_array; | |
240 | unsigned int i; | |
241 | ||
242 | if (!nr_queues) | |
243 | nr_queues = AUXTRACE_INIT_NR_QUEUES; | |
244 | ||
245 | while (nr_queues && nr_queues < new_nr_queues) | |
246 | nr_queues <<= 1; | |
247 | ||
248 | if (nr_queues < queues->nr_queues || nr_queues < new_nr_queues) | |
249 | return -EINVAL; | |
250 | ||
251 | queue_array = auxtrace_alloc_queue_array(nr_queues); | |
252 | if (!queue_array) | |
253 | return -ENOMEM; | |
254 | ||
255 | for (i = 0; i < queues->nr_queues; i++) { | |
256 | list_splice_tail(&queues->queue_array[i].head, | |
257 | &queue_array[i].head); | |
99cbbe56 AH |
258 | queue_array[i].tid = queues->queue_array[i].tid; |
259 | queue_array[i].cpu = queues->queue_array[i].cpu; | |
260 | queue_array[i].set = queues->queue_array[i].set; | |
e5027893 AH |
261 | queue_array[i].priv = queues->queue_array[i].priv; |
262 | } | |
263 | ||
264 | queues->nr_queues = nr_queues; | |
265 | queues->queue_array = queue_array; | |
266 | ||
267 | return 0; | |
268 | } | |
269 | ||
270 | static void *auxtrace_copy_data(u64 size, struct perf_session *session) | |
271 | { | |
8ceb41d7 | 272 | int fd = perf_data__fd(session->data); |
e5027893 AH |
273 | void *p; |
274 | ssize_t ret; | |
275 | ||
276 | if (size > SSIZE_MAX) | |
277 | return NULL; | |
278 | ||
279 | p = malloc(size); | |
280 | if (!p) | |
281 | return NULL; | |
282 | ||
283 | ret = readn(fd, p, size); | |
284 | if (ret != (ssize_t)size) { | |
285 | free(p); | |
286 | return NULL; | |
287 | } | |
288 | ||
289 | return p; | |
290 | } | |
291 | ||
a356a597 AH |
292 | static int auxtrace_queues__queue_buffer(struct auxtrace_queues *queues, |
293 | unsigned int idx, | |
294 | struct auxtrace_buffer *buffer) | |
e5027893 AH |
295 | { |
296 | struct auxtrace_queue *queue; | |
297 | int err; | |
298 | ||
299 | if (idx >= queues->nr_queues) { | |
300 | err = auxtrace_queues__grow(queues, idx + 1); | |
301 | if (err) | |
302 | return err; | |
303 | } | |
304 | ||
305 | queue = &queues->queue_array[idx]; | |
306 | ||
307 | if (!queue->set) { | |
308 | queue->set = true; | |
309 | queue->tid = buffer->tid; | |
6d18804b | 310 | queue->cpu = buffer->cpu.cpu; |
e5027893 AH |
311 | } |
312 | ||
313 | buffer->buffer_nr = queues->next_buffer_nr++; | |
314 | ||
315 | list_add_tail(&buffer->list, &queue->head); | |
316 | ||
317 | queues->new_data = true; | |
318 | queues->populated = true; | |
319 | ||
320 | return 0; | |
321 | } | |
322 | ||
323 | /* Limit buffers to 32MiB on 32-bit */ | |
324 | #define BUFFER_LIMIT_FOR_32_BIT (32 * 1024 * 1024) | |
325 | ||
326 | static int auxtrace_queues__split_buffer(struct auxtrace_queues *queues, | |
327 | unsigned int idx, | |
328 | struct auxtrace_buffer *buffer) | |
329 | { | |
330 | u64 sz = buffer->size; | |
331 | bool consecutive = false; | |
332 | struct auxtrace_buffer *b; | |
333 | int err; | |
334 | ||
335 | while (sz > BUFFER_LIMIT_FOR_32_BIT) { | |
336 | b = memdup(buffer, sizeof(struct auxtrace_buffer)); | |
337 | if (!b) | |
338 | return -ENOMEM; | |
339 | b->size = BUFFER_LIMIT_FOR_32_BIT; | |
340 | b->consecutive = consecutive; | |
a356a597 | 341 | err = auxtrace_queues__queue_buffer(queues, idx, b); |
e5027893 AH |
342 | if (err) { |
343 | auxtrace_buffer__free(b); | |
344 | return err; | |
345 | } | |
346 | buffer->data_offset += BUFFER_LIMIT_FOR_32_BIT; | |
347 | sz -= BUFFER_LIMIT_FOR_32_BIT; | |
348 | consecutive = true; | |
349 | } | |
350 | ||
351 | buffer->size = sz; | |
352 | buffer->consecutive = consecutive; | |
353 | ||
354 | return 0; | |
355 | } | |
356 | ||
6d18804b | 357 | static bool filter_cpu(struct perf_session *session, struct perf_cpu cpu) |
b238db65 AH |
358 | { |
359 | unsigned long *cpu_bitmap = session->itrace_synth_opts->cpu_bitmap; | |
360 | ||
6d18804b | 361 | return cpu_bitmap && cpu.cpu != -1 && !test_bit(cpu.cpu, cpu_bitmap); |
b238db65 AH |
362 | } |
363 | ||
a356a597 AH |
364 | static int auxtrace_queues__add_buffer(struct auxtrace_queues *queues, |
365 | struct perf_session *session, | |
366 | unsigned int idx, | |
4c454843 AH |
367 | struct auxtrace_buffer *buffer, |
368 | struct auxtrace_buffer **buffer_ptr) | |
e5027893 | 369 | { |
0d75f123 AH |
370 | int err = -ENOMEM; |
371 | ||
b238db65 AH |
372 | if (filter_cpu(session, buffer->cpu)) |
373 | return 0; | |
374 | ||
0d75f123 AH |
375 | buffer = memdup(buffer, sizeof(*buffer)); |
376 | if (!buffer) | |
377 | return -ENOMEM; | |
4c454843 | 378 | |
e5027893 AH |
379 | if (session->one_mmap) { |
380 | buffer->data = buffer->data_offset - session->one_mmap_offset + | |
381 | session->one_mmap_addr; | |
8ceb41d7 | 382 | } else if (perf_data__is_pipe(session->data)) { |
e5027893 AH |
383 | buffer->data = auxtrace_copy_data(buffer->size, session); |
384 | if (!buffer->data) | |
0d75f123 | 385 | goto out_free; |
e5027893 AH |
386 | buffer->data_needs_freeing = true; |
387 | } else if (BITS_PER_LONG == 32 && | |
388 | buffer->size > BUFFER_LIMIT_FOR_32_BIT) { | |
e5027893 AH |
389 | err = auxtrace_queues__split_buffer(queues, idx, buffer); |
390 | if (err) | |
0d75f123 | 391 | goto out_free; |
e5027893 AH |
392 | } |
393 | ||
4c454843 AH |
394 | err = auxtrace_queues__queue_buffer(queues, idx, buffer); |
395 | if (err) | |
0d75f123 | 396 | goto out_free; |
4c454843 AH |
397 | |
398 | /* FIXME: Doesn't work for split buffer */ | |
399 | if (buffer_ptr) | |
400 | *buffer_ptr = buffer; | |
401 | ||
402 | return 0; | |
0d75f123 AH |
403 | |
404 | out_free: | |
405 | auxtrace_buffer__free(buffer); | |
406 | return err; | |
e5027893 AH |
407 | } |
408 | ||
409 | int auxtrace_queues__add_event(struct auxtrace_queues *queues, | |
410 | struct perf_session *session, | |
411 | union perf_event *event, off_t data_offset, | |
412 | struct auxtrace_buffer **buffer_ptr) | |
413 | { | |
0d75f123 AH |
414 | struct auxtrace_buffer buffer = { |
415 | .pid = -1, | |
416 | .tid = event->auxtrace.tid, | |
6d18804b | 417 | .cpu = { event->auxtrace.cpu }, |
0d75f123 AH |
418 | .data_offset = data_offset, |
419 | .offset = event->auxtrace.offset, | |
420 | .reference = event->auxtrace.reference, | |
421 | .size = event->auxtrace.size, | |
422 | }; | |
423 | unsigned int idx = event->auxtrace.idx; | |
e5027893 | 424 | |
0d75f123 AH |
425 | return auxtrace_queues__add_buffer(queues, session, idx, &buffer, |
426 | buffer_ptr); | |
e5027893 AH |
427 | } |
428 | ||
99fa2984 AH |
429 | static int auxtrace_queues__add_indexed_event(struct auxtrace_queues *queues, |
430 | struct perf_session *session, | |
431 | off_t file_offset, size_t sz) | |
432 | { | |
433 | union perf_event *event; | |
434 | int err; | |
435 | char buf[PERF_SAMPLE_MAX_SIZE]; | |
436 | ||
437 | err = perf_session__peek_event(session, file_offset, buf, | |
438 | PERF_SAMPLE_MAX_SIZE, &event, NULL); | |
439 | if (err) | |
440 | return err; | |
441 | ||
442 | if (event->header.type == PERF_RECORD_AUXTRACE) { | |
72932371 | 443 | if (event->header.size < sizeof(struct perf_record_auxtrace) || |
99fa2984 AH |
444 | event->header.size != sz) { |
445 | err = -EINVAL; | |
446 | goto out; | |
447 | } | |
448 | file_offset += event->header.size; | |
449 | err = auxtrace_queues__add_event(queues, session, event, | |
450 | file_offset, NULL); | |
451 | } | |
452 | out: | |
453 | return err; | |
454 | } | |
455 | ||
e5027893 AH |
456 | void auxtrace_queues__free(struct auxtrace_queues *queues) |
457 | { | |
458 | unsigned int i; | |
459 | ||
460 | for (i = 0; i < queues->nr_queues; i++) { | |
461 | while (!list_empty(&queues->queue_array[i].head)) { | |
462 | struct auxtrace_buffer *buffer; | |
463 | ||
464 | buffer = list_entry(queues->queue_array[i].head.next, | |
465 | struct auxtrace_buffer, list); | |
e56fbc9d | 466 | list_del_init(&buffer->list); |
e5027893 AH |
467 | auxtrace_buffer__free(buffer); |
468 | } | |
469 | } | |
470 | ||
471 | zfree(&queues->queue_array); | |
472 | queues->nr_queues = 0; | |
473 | } | |
474 | ||
f9397155 AH |
475 | static void auxtrace_heapify(struct auxtrace_heap_item *heap_array, |
476 | unsigned int pos, unsigned int queue_nr, | |
477 | u64 ordinal) | |
478 | { | |
479 | unsigned int parent; | |
480 | ||
481 | while (pos) { | |
482 | parent = (pos - 1) >> 1; | |
483 | if (heap_array[parent].ordinal <= ordinal) | |
484 | break; | |
485 | heap_array[pos] = heap_array[parent]; | |
486 | pos = parent; | |
487 | } | |
488 | heap_array[pos].queue_nr = queue_nr; | |
489 | heap_array[pos].ordinal = ordinal; | |
490 | } | |
491 | ||
492 | int auxtrace_heap__add(struct auxtrace_heap *heap, unsigned int queue_nr, | |
493 | u64 ordinal) | |
494 | { | |
495 | struct auxtrace_heap_item *heap_array; | |
496 | ||
497 | if (queue_nr >= heap->heap_sz) { | |
498 | unsigned int heap_sz = AUXTRACE_INIT_NR_QUEUES; | |
499 | ||
500 | while (heap_sz <= queue_nr) | |
501 | heap_sz <<= 1; | |
502 | heap_array = realloc(heap->heap_array, | |
503 | heap_sz * sizeof(struct auxtrace_heap_item)); | |
504 | if (!heap_array) | |
505 | return -ENOMEM; | |
506 | heap->heap_array = heap_array; | |
507 | heap->heap_sz = heap_sz; | |
508 | } | |
509 | ||
510 | auxtrace_heapify(heap->heap_array, heap->heap_cnt++, queue_nr, ordinal); | |
511 | ||
512 | return 0; | |
513 | } | |
514 | ||
515 | void auxtrace_heap__free(struct auxtrace_heap *heap) | |
516 | { | |
517 | zfree(&heap->heap_array); | |
518 | heap->heap_cnt = 0; | |
519 | heap->heap_sz = 0; | |
520 | } | |
521 | ||
522 | void auxtrace_heap__pop(struct auxtrace_heap *heap) | |
523 | { | |
524 | unsigned int pos, last, heap_cnt = heap->heap_cnt; | |
525 | struct auxtrace_heap_item *heap_array; | |
526 | ||
527 | if (!heap_cnt) | |
528 | return; | |
529 | ||
530 | heap->heap_cnt -= 1; | |
531 | ||
532 | heap_array = heap->heap_array; | |
533 | ||
534 | pos = 0; | |
535 | while (1) { | |
536 | unsigned int left, right; | |
537 | ||
538 | left = (pos << 1) + 1; | |
539 | if (left >= heap_cnt) | |
540 | break; | |
541 | right = left + 1; | |
542 | if (right >= heap_cnt) { | |
543 | heap_array[pos] = heap_array[left]; | |
544 | return; | |
545 | } | |
546 | if (heap_array[left].ordinal < heap_array[right].ordinal) { | |
547 | heap_array[pos] = heap_array[left]; | |
548 | pos = left; | |
549 | } else { | |
550 | heap_array[pos] = heap_array[right]; | |
551 | pos = right; | |
552 | } | |
553 | } | |
554 | ||
555 | last = heap_cnt - 1; | |
556 | auxtrace_heapify(heap_array, pos, heap_array[last].queue_nr, | |
557 | heap_array[last].ordinal); | |
558 | } | |
559 | ||
14a05e13 | 560 | size_t auxtrace_record__info_priv_size(struct auxtrace_record *itr, |
63503dba | 561 | struct evlist *evlist) |
9e0cc4fe AH |
562 | { |
563 | if (itr) | |
14a05e13 | 564 | return itr->info_priv_size(itr, evlist); |
9e0cc4fe AH |
565 | return 0; |
566 | } | |
567 | ||
568 | static int auxtrace_not_supported(void) | |
569 | { | |
570 | pr_err("AUX area tracing is not supported on this architecture\n"); | |
571 | return -EINVAL; | |
572 | } | |
573 | ||
574 | int auxtrace_record__info_fill(struct auxtrace_record *itr, | |
575 | struct perf_session *session, | |
72932371 | 576 | struct perf_record_auxtrace_info *auxtrace_info, |
9e0cc4fe AH |
577 | size_t priv_size) |
578 | { | |
579 | if (itr) | |
580 | return itr->info_fill(itr, session, auxtrace_info, priv_size); | |
581 | return auxtrace_not_supported(); | |
582 | } | |
583 | ||
584 | void auxtrace_record__free(struct auxtrace_record *itr) | |
585 | { | |
586 | if (itr) | |
587 | itr->free(itr); | |
588 | } | |
589 | ||
d20031bb AH |
590 | int auxtrace_record__snapshot_start(struct auxtrace_record *itr) |
591 | { | |
592 | if (itr && itr->snapshot_start) | |
593 | return itr->snapshot_start(itr); | |
594 | return 0; | |
595 | } | |
596 | ||
ce7b0e42 | 597 | int auxtrace_record__snapshot_finish(struct auxtrace_record *itr, bool on_exit) |
d20031bb | 598 | { |
ce7b0e42 | 599 | if (!on_exit && itr && itr->snapshot_finish) |
d20031bb AH |
600 | return itr->snapshot_finish(itr); |
601 | return 0; | |
602 | } | |
603 | ||
604 | int auxtrace_record__find_snapshot(struct auxtrace_record *itr, int idx, | |
605 | struct auxtrace_mmap *mm, | |
606 | unsigned char *data, u64 *head, u64 *old) | |
607 | { | |
608 | if (itr && itr->find_snapshot) | |
609 | return itr->find_snapshot(itr, idx, mm, data, head, old); | |
610 | return 0; | |
611 | } | |
612 | ||
9e0cc4fe | 613 | int auxtrace_record__options(struct auxtrace_record *itr, |
63503dba | 614 | struct evlist *evlist, |
9e0cc4fe AH |
615 | struct record_opts *opts) |
616 | { | |
ad60ba0c AH |
617 | if (itr) { |
618 | itr->evlist = evlist; | |
9e0cc4fe | 619 | return itr->recording_options(itr, evlist, opts); |
ad60ba0c | 620 | } |
9e0cc4fe AH |
621 | return 0; |
622 | } | |
623 | ||
624 | u64 auxtrace_record__reference(struct auxtrace_record *itr) | |
625 | { | |
626 | if (itr) | |
627 | return itr->reference(itr); | |
628 | return 0; | |
629 | } | |
630 | ||
d20031bb AH |
631 | int auxtrace_parse_snapshot_options(struct auxtrace_record *itr, |
632 | struct record_opts *opts, const char *str) | |
633 | { | |
634 | if (!str) | |
635 | return 0; | |
636 | ||
ce7b0e42 AS |
637 | /* PMU-agnostic options */ |
638 | switch (*str) { | |
639 | case 'e': | |
640 | opts->auxtrace_snapshot_on_exit = true; | |
641 | str++; | |
642 | break; | |
643 | default: | |
644 | break; | |
645 | } | |
646 | ||
b14585d9 | 647 | if (itr && itr->parse_snapshot_options) |
d20031bb AH |
648 | return itr->parse_snapshot_options(itr, opts, str); |
649 | ||
650 | pr_err("No AUX area tracing to snapshot\n"); | |
651 | return -EINVAL; | |
652 | } | |
653 | ||
024b3b42 AH |
654 | static int evlist__enable_event_idx(struct evlist *evlist, struct evsel *evsel, int idx) |
655 | { | |
3e5deb70 | 656 | bool per_cpu_mmaps = !perf_cpu_map__has_any_cpu(evlist->core.user_requested_cpus); |
024b3b42 | 657 | |
d205a3a6 AH |
658 | if (per_cpu_mmaps) { |
659 | struct perf_cpu evlist_cpu = perf_cpu_map__cpu(evlist->core.all_cpus, idx); | |
660 | int cpu_map_idx = perf_cpu_map__idx(evsel->core.cpus, evlist_cpu); | |
661 | ||
662 | if (cpu_map_idx == -1) | |
663 | return -EINVAL; | |
664 | return perf_evsel__enable_cpu(&evsel->core, cpu_map_idx); | |
665 | } | |
024b3b42 AH |
666 | |
667 | return perf_evsel__enable_thread(&evsel->core, idx); | |
668 | } | |
669 | ||
ad60ba0c AH |
670 | int auxtrace_record__read_finish(struct auxtrace_record *itr, int idx) |
671 | { | |
672 | struct evsel *evsel; | |
673 | ||
674 | if (!itr->evlist || !itr->pmu) | |
675 | return -EINVAL; | |
676 | ||
677 | evlist__for_each_entry(itr->evlist, evsel) { | |
678 | if (evsel->core.attr.type == itr->pmu->type) { | |
679 | if (evsel->disabled) | |
680 | return 0; | |
37b01abe | 681 | return evlist__enable_event_idx(itr->evlist, evsel, idx); |
ad60ba0c AH |
682 | } |
683 | } | |
684 | return -EINVAL; | |
685 | } | |
686 | ||
f0bb7ee8 AH |
687 | /* |
688 | * Event record size is 16-bit which results in a maximum size of about 64KiB. | |
689 | * Allow about 4KiB for the rest of the sample record, to give a maximum | |
690 | * AUX area sample size of 60KiB. | |
691 | */ | |
692 | #define MAX_AUX_SAMPLE_SIZE (60 * 1024) | |
693 | ||
694 | /* Arbitrary default size if no other default provided */ | |
695 | #define DEFAULT_AUX_SAMPLE_SIZE (4 * 1024) | |
696 | ||
697 | static int auxtrace_validate_aux_sample_size(struct evlist *evlist, | |
698 | struct record_opts *opts) | |
699 | { | |
700 | struct evsel *evsel; | |
701 | bool has_aux_leader = false; | |
702 | u32 sz; | |
703 | ||
704 | evlist__for_each_entry(evlist, evsel) { | |
705 | sz = evsel->core.attr.aux_sample_size; | |
c754c382 | 706 | if (evsel__is_group_leader(evsel)) { |
39453ed5 | 707 | has_aux_leader = evsel__is_aux_event(evsel); |
f0bb7ee8 AH |
708 | if (sz) { |
709 | if (has_aux_leader) | |
710 | pr_err("Cannot add AUX area sampling to an AUX area event\n"); | |
711 | else | |
712 | pr_err("Cannot add AUX area sampling to a group leader\n"); | |
713 | return -EINVAL; | |
714 | } | |
715 | } | |
716 | if (sz > MAX_AUX_SAMPLE_SIZE) { | |
717 | pr_err("AUX area sample size %u too big, max. %d\n", | |
718 | sz, MAX_AUX_SAMPLE_SIZE); | |
719 | return -EINVAL; | |
720 | } | |
721 | if (sz) { | |
722 | if (!has_aux_leader) { | |
723 | pr_err("Cannot add AUX area sampling because group leader is not an AUX area event\n"); | |
724 | return -EINVAL; | |
725 | } | |
862b2f8f | 726 | evsel__set_sample_bit(evsel, AUX); |
f0bb7ee8 AH |
727 | opts->auxtrace_sample_mode = true; |
728 | } else { | |
862b2f8f | 729 | evsel__reset_sample_bit(evsel, AUX); |
f0bb7ee8 AH |
730 | } |
731 | } | |
732 | ||
733 | if (!opts->auxtrace_sample_mode) { | |
734 | pr_err("AUX area sampling requires an AUX area event group leader plus other events to which to add samples\n"); | |
735 | return -EINVAL; | |
736 | } | |
737 | ||
738 | if (!perf_can_aux_sample()) { | |
739 | pr_err("AUX area sampling is not supported by kernel\n"); | |
740 | return -EINVAL; | |
741 | } | |
742 | ||
743 | return 0; | |
744 | } | |
745 | ||
746 | int auxtrace_parse_sample_options(struct auxtrace_record *itr, | |
747 | struct evlist *evlist, | |
748 | struct record_opts *opts, const char *str) | |
749 | { | |
35ac0cad | 750 | struct evsel_config_term *term; |
eb7a52d4 AH |
751 | struct evsel *aux_evsel; |
752 | bool has_aux_sample_size = false; | |
f0bb7ee8 AH |
753 | bool has_aux_leader = false; |
754 | struct evsel *evsel; | |
755 | char *endptr; | |
756 | unsigned long sz; | |
757 | ||
758 | if (!str) | |
eb7a52d4 | 759 | goto no_opt; |
f0bb7ee8 AH |
760 | |
761 | if (!itr) { | |
762 | pr_err("No AUX area event to sample\n"); | |
763 | return -EINVAL; | |
764 | } | |
765 | ||
766 | sz = strtoul(str, &endptr, 0); | |
767 | if (*endptr || sz > UINT_MAX) { | |
768 | pr_err("Bad AUX area sampling option: '%s'\n", str); | |
769 | return -EINVAL; | |
770 | } | |
771 | ||
772 | if (!sz) | |
773 | sz = itr->default_aux_sample_size; | |
774 | ||
775 | if (!sz) | |
776 | sz = DEFAULT_AUX_SAMPLE_SIZE; | |
777 | ||
778 | /* Set aux_sample_size based on --aux-sample option */ | |
779 | evlist__for_each_entry(evlist, evsel) { | |
c754c382 | 780 | if (evsel__is_group_leader(evsel)) { |
39453ed5 | 781 | has_aux_leader = evsel__is_aux_event(evsel); |
f0bb7ee8 AH |
782 | } else if (has_aux_leader) { |
783 | evsel->core.attr.aux_sample_size = sz; | |
784 | } | |
785 | } | |
eb7a52d4 AH |
786 | no_opt: |
787 | aux_evsel = NULL; | |
788 | /* Override with aux_sample_size from config term */ | |
789 | evlist__for_each_entry(evlist, evsel) { | |
39453ed5 | 790 | if (evsel__is_aux_event(evsel)) |
eb7a52d4 | 791 | aux_evsel = evsel; |
35ac0cad | 792 | term = evsel__get_config_term(evsel, AUX_SAMPLE_SIZE); |
eb7a52d4 AH |
793 | if (term) { |
794 | has_aux_sample_size = true; | |
795 | evsel->core.attr.aux_sample_size = term->val.aux_sample_size; | |
796 | /* If possible, group with the AUX event */ | |
797 | if (aux_evsel && evsel->core.attr.aux_sample_size) | |
64b4778b | 798 | evlist__regroup(evlist, aux_evsel, evsel); |
eb7a52d4 AH |
799 | } |
800 | } | |
801 | ||
802 | if (!str && !has_aux_sample_size) | |
803 | return 0; | |
804 | ||
805 | if (!itr) { | |
806 | pr_err("No AUX area event to sample\n"); | |
807 | return -EINVAL; | |
808 | } | |
f0bb7ee8 AH |
809 | |
810 | return auxtrace_validate_aux_sample_size(evlist, opts); | |
811 | } | |
812 | ||
d58b3f7e AH |
813 | void auxtrace_regroup_aux_output(struct evlist *evlist) |
814 | { | |
815 | struct evsel *evsel, *aux_evsel = NULL; | |
816 | struct evsel_config_term *term; | |
817 | ||
818 | evlist__for_each_entry(evlist, evsel) { | |
819 | if (evsel__is_aux_event(evsel)) | |
820 | aux_evsel = evsel; | |
821 | term = evsel__get_config_term(evsel, AUX_OUTPUT); | |
822 | /* If possible, group with the AUX event */ | |
823 | if (term && aux_evsel) | |
824 | evlist__regroup(evlist, aux_evsel, evsel); | |
825 | } | |
826 | } | |
827 | ||
9e0cc4fe | 828 | struct auxtrace_record *__weak |
63503dba | 829 | auxtrace_record__init(struct evlist *evlist __maybe_unused, int *err) |
9e0cc4fe AH |
830 | { |
831 | *err = 0; | |
832 | return NULL; | |
833 | } | |
834 | ||
99fa2984 AH |
835 | static int auxtrace_index__alloc(struct list_head *head) |
836 | { | |
837 | struct auxtrace_index *auxtrace_index; | |
838 | ||
839 | auxtrace_index = malloc(sizeof(struct auxtrace_index)); | |
840 | if (!auxtrace_index) | |
841 | return -ENOMEM; | |
842 | ||
843 | auxtrace_index->nr = 0; | |
844 | INIT_LIST_HEAD(&auxtrace_index->list); | |
845 | ||
846 | list_add_tail(&auxtrace_index->list, head); | |
847 | ||
848 | return 0; | |
849 | } | |
850 | ||
851 | void auxtrace_index__free(struct list_head *head) | |
852 | { | |
853 | struct auxtrace_index *auxtrace_index, *n; | |
854 | ||
855 | list_for_each_entry_safe(auxtrace_index, n, head, list) { | |
e56fbc9d | 856 | list_del_init(&auxtrace_index->list); |
99fa2984 AH |
857 | free(auxtrace_index); |
858 | } | |
859 | } | |
860 | ||
861 | static struct auxtrace_index *auxtrace_index__last(struct list_head *head) | |
862 | { | |
863 | struct auxtrace_index *auxtrace_index; | |
864 | int err; | |
865 | ||
866 | if (list_empty(head)) { | |
867 | err = auxtrace_index__alloc(head); | |
868 | if (err) | |
869 | return NULL; | |
870 | } | |
871 | ||
872 | auxtrace_index = list_entry(head->prev, struct auxtrace_index, list); | |
873 | ||
874 | if (auxtrace_index->nr >= PERF_AUXTRACE_INDEX_ENTRY_COUNT) { | |
875 | err = auxtrace_index__alloc(head); | |
876 | if (err) | |
877 | return NULL; | |
878 | auxtrace_index = list_entry(head->prev, struct auxtrace_index, | |
879 | list); | |
880 | } | |
881 | ||
882 | return auxtrace_index; | |
883 | } | |
884 | ||
885 | int auxtrace_index__auxtrace_event(struct list_head *head, | |
886 | union perf_event *event, off_t file_offset) | |
887 | { | |
888 | struct auxtrace_index *auxtrace_index; | |
889 | size_t nr; | |
890 | ||
891 | auxtrace_index = auxtrace_index__last(head); | |
892 | if (!auxtrace_index) | |
893 | return -ENOMEM; | |
894 | ||
895 | nr = auxtrace_index->nr; | |
896 | auxtrace_index->entries[nr].file_offset = file_offset; | |
897 | auxtrace_index->entries[nr].sz = event->header.size; | |
898 | auxtrace_index->nr += 1; | |
899 | ||
900 | return 0; | |
901 | } | |
902 | ||
903 | static int auxtrace_index__do_write(int fd, | |
904 | struct auxtrace_index *auxtrace_index) | |
905 | { | |
906 | struct auxtrace_index_entry ent; | |
907 | size_t i; | |
908 | ||
909 | for (i = 0; i < auxtrace_index->nr; i++) { | |
910 | ent.file_offset = auxtrace_index->entries[i].file_offset; | |
911 | ent.sz = auxtrace_index->entries[i].sz; | |
912 | if (writen(fd, &ent, sizeof(ent)) != sizeof(ent)) | |
913 | return -errno; | |
914 | } | |
915 | return 0; | |
916 | } | |
917 | ||
918 | int auxtrace_index__write(int fd, struct list_head *head) | |
919 | { | |
920 | struct auxtrace_index *auxtrace_index; | |
921 | u64 total = 0; | |
922 | int err; | |
923 | ||
924 | list_for_each_entry(auxtrace_index, head, list) | |
925 | total += auxtrace_index->nr; | |
926 | ||
927 | if (writen(fd, &total, sizeof(total)) != sizeof(total)) | |
928 | return -errno; | |
929 | ||
930 | list_for_each_entry(auxtrace_index, head, list) { | |
931 | err = auxtrace_index__do_write(fd, auxtrace_index); | |
932 | if (err) | |
933 | return err; | |
934 | } | |
935 | ||
936 | return 0; | |
937 | } | |
938 | ||
939 | static int auxtrace_index__process_entry(int fd, struct list_head *head, | |
940 | bool needs_swap) | |
941 | { | |
942 | struct auxtrace_index *auxtrace_index; | |
943 | struct auxtrace_index_entry ent; | |
944 | size_t nr; | |
945 | ||
946 | if (readn(fd, &ent, sizeof(ent)) != sizeof(ent)) | |
947 | return -1; | |
948 | ||
949 | auxtrace_index = auxtrace_index__last(head); | |
950 | if (!auxtrace_index) | |
951 | return -1; | |
952 | ||
953 | nr = auxtrace_index->nr; | |
954 | if (needs_swap) { | |
955 | auxtrace_index->entries[nr].file_offset = | |
956 | bswap_64(ent.file_offset); | |
957 | auxtrace_index->entries[nr].sz = bswap_64(ent.sz); | |
958 | } else { | |
959 | auxtrace_index->entries[nr].file_offset = ent.file_offset; | |
960 | auxtrace_index->entries[nr].sz = ent.sz; | |
961 | } | |
962 | ||
963 | auxtrace_index->nr = nr + 1; | |
964 | ||
965 | return 0; | |
966 | } | |
967 | ||
968 | int auxtrace_index__process(int fd, u64 size, struct perf_session *session, | |
969 | bool needs_swap) | |
970 | { | |
971 | struct list_head *head = &session->auxtrace_index; | |
972 | u64 nr; | |
973 | ||
974 | if (readn(fd, &nr, sizeof(u64)) != sizeof(u64)) | |
975 | return -1; | |
976 | ||
977 | if (needs_swap) | |
978 | nr = bswap_64(nr); | |
979 | ||
980 | if (sizeof(u64) + nr * sizeof(struct auxtrace_index_entry) > size) | |
981 | return -1; | |
982 | ||
983 | while (nr--) { | |
984 | int err; | |
985 | ||
986 | err = auxtrace_index__process_entry(fd, head, needs_swap); | |
987 | if (err) | |
988 | return -1; | |
989 | } | |
990 | ||
991 | return 0; | |
992 | } | |
993 | ||
994 | static int auxtrace_queues__process_index_entry(struct auxtrace_queues *queues, | |
995 | struct perf_session *session, | |
996 | struct auxtrace_index_entry *ent) | |
997 | { | |
998 | return auxtrace_queues__add_indexed_event(queues, session, | |
999 | ent->file_offset, ent->sz); | |
1000 | } | |
1001 | ||
1002 | int auxtrace_queues__process_index(struct auxtrace_queues *queues, | |
1003 | struct perf_session *session) | |
1004 | { | |
1005 | struct auxtrace_index *auxtrace_index; | |
1006 | struct auxtrace_index_entry *ent; | |
1007 | size_t i; | |
1008 | int err; | |
1009 | ||
2e2967f4 AH |
1010 | if (auxtrace__dont_decode(session)) |
1011 | return 0; | |
1012 | ||
99fa2984 AH |
1013 | list_for_each_entry(auxtrace_index, &session->auxtrace_index, list) { |
1014 | for (i = 0; i < auxtrace_index->nr; i++) { | |
1015 | ent = &auxtrace_index->entries[i]; | |
1016 | err = auxtrace_queues__process_index_entry(queues, | |
1017 | session, | |
1018 | ent); | |
1019 | if (err) | |
1020 | return err; | |
1021 | } | |
1022 | } | |
1023 | return 0; | |
1024 | } | |
1025 | ||
e5027893 AH |
1026 | struct auxtrace_buffer *auxtrace_buffer__next(struct auxtrace_queue *queue, |
1027 | struct auxtrace_buffer *buffer) | |
1028 | { | |
1029 | if (buffer) { | |
1030 | if (list_is_last(&buffer->list, &queue->head)) | |
1031 | return NULL; | |
1032 | return list_entry(buffer->list.next, struct auxtrace_buffer, | |
1033 | list); | |
1034 | } else { | |
1035 | if (list_empty(&queue->head)) | |
1036 | return NULL; | |
1037 | return list_entry(queue->head.next, struct auxtrace_buffer, | |
1038 | list); | |
1039 | } | |
1040 | } | |
1041 | ||
ac2f445f AH |
1042 | struct auxtrace_queue *auxtrace_queues__sample_queue(struct auxtrace_queues *queues, |
1043 | struct perf_sample *sample, | |
1044 | struct perf_session *session) | |
1045 | { | |
1046 | struct perf_sample_id *sid; | |
1047 | unsigned int idx; | |
1048 | u64 id; | |
1049 | ||
1050 | id = sample->id; | |
1051 | if (!id) | |
1052 | return NULL; | |
1053 | ||
3ccf8a7b | 1054 | sid = evlist__id2sid(session->evlist, id); |
ac2f445f AH |
1055 | if (!sid) |
1056 | return NULL; | |
1057 | ||
1058 | idx = sid->idx; | |
1059 | ||
1060 | if (idx >= queues->nr_queues) | |
1061 | return NULL; | |
1062 | ||
1063 | return &queues->queue_array[idx]; | |
1064 | } | |
1065 | ||
1066 | int auxtrace_queues__add_sample(struct auxtrace_queues *queues, | |
1067 | struct perf_session *session, | |
1068 | struct perf_sample *sample, u64 data_offset, | |
1069 | u64 reference) | |
1070 | { | |
1071 | struct auxtrace_buffer buffer = { | |
1072 | .pid = -1, | |
1073 | .data_offset = data_offset, | |
1074 | .reference = reference, | |
1075 | .size = sample->aux_sample.size, | |
1076 | }; | |
1077 | struct perf_sample_id *sid; | |
1078 | u64 id = sample->id; | |
1079 | unsigned int idx; | |
1080 | ||
1081 | if (!id) | |
1082 | return -EINVAL; | |
1083 | ||
3ccf8a7b | 1084 | sid = evlist__id2sid(session->evlist, id); |
ac2f445f AH |
1085 | if (!sid) |
1086 | return -ENOENT; | |
1087 | ||
1088 | idx = sid->idx; | |
1089 | buffer.tid = sid->tid; | |
1090 | buffer.cpu = sid->cpu; | |
1091 | ||
1092 | return auxtrace_queues__add_buffer(queues, session, idx, &buffer, NULL); | |
1093 | } | |
1094 | ||
1095 | struct queue_data { | |
1096 | bool samples; | |
1097 | bool events; | |
1098 | }; | |
1099 | ||
1100 | static int auxtrace_queue_data_cb(struct perf_session *session, | |
1101 | union perf_event *event, u64 offset, | |
1102 | void *data) | |
1103 | { | |
1104 | struct queue_data *qd = data; | |
1105 | struct perf_sample sample; | |
1106 | int err; | |
1107 | ||
1108 | if (qd->events && event->header.type == PERF_RECORD_AUXTRACE) { | |
1109 | if (event->header.size < sizeof(struct perf_record_auxtrace)) | |
1110 | return -EINVAL; | |
1111 | offset += event->header.size; | |
1112 | return session->auxtrace->queue_data(session, NULL, event, | |
1113 | offset); | |
1114 | } | |
1115 | ||
1116 | if (!qd->samples || event->header.type != PERF_RECORD_SAMPLE) | |
1117 | return 0; | |
1118 | ||
2a6599cd | 1119 | err = evlist__parse_sample(session->evlist, event, &sample); |
ac2f445f AH |
1120 | if (err) |
1121 | return err; | |
1122 | ||
1123 | if (!sample.aux_sample.size) | |
1124 | return 0; | |
1125 | ||
1126 | offset += sample.aux_sample.data - (void *)event; | |
1127 | ||
1128 | return session->auxtrace->queue_data(session, &sample, NULL, offset); | |
1129 | } | |
1130 | ||
1131 | int auxtrace_queue_data(struct perf_session *session, bool samples, bool events) | |
1132 | { | |
1133 | struct queue_data qd = { | |
1134 | .samples = samples, | |
1135 | .events = events, | |
1136 | }; | |
1137 | ||
1138 | if (auxtrace__dont_decode(session)) | |
1139 | return 0; | |
aeb802f8 NK |
1140 | |
1141 | if (perf_data__is_pipe(session->data)) | |
1142 | return 0; | |
ac2f445f AH |
1143 | |
1144 | if (!session->auxtrace || !session->auxtrace->queue_data) | |
1145 | return -EINVAL; | |
1146 | ||
1147 | return perf_session__peek_events(session, session->header.data_offset, | |
1148 | session->header.data_size, | |
1149 | auxtrace_queue_data_cb, &qd); | |
1150 | } | |
1151 | ||
6aa3afc9 | 1152 | void *auxtrace_buffer__get_data_rw(struct auxtrace_buffer *buffer, int fd, bool rw) |
e5027893 | 1153 | { |
6aa3afc9 | 1154 | int prot = rw ? PROT_READ | PROT_WRITE : PROT_READ; |
e5027893 AH |
1155 | size_t adj = buffer->data_offset & (page_size - 1); |
1156 | size_t size = buffer->size + adj; | |
1157 | off_t file_offset = buffer->data_offset - adj; | |
1158 | void *addr; | |
1159 | ||
1160 | if (buffer->data) | |
1161 | return buffer->data; | |
1162 | ||
6aa3afc9 | 1163 | addr = mmap(NULL, size, prot, MAP_SHARED, fd, file_offset); |
e5027893 AH |
1164 | if (addr == MAP_FAILED) |
1165 | return NULL; | |
1166 | ||
1167 | buffer->mmap_addr = addr; | |
1168 | buffer->mmap_size = size; | |
1169 | ||
1170 | buffer->data = addr + adj; | |
1171 | ||
1172 | return buffer->data; | |
1173 | } | |
1174 | ||
1175 | void auxtrace_buffer__put_data(struct auxtrace_buffer *buffer) | |
1176 | { | |
1177 | if (!buffer->data || !buffer->mmap_addr) | |
1178 | return; | |
1179 | munmap(buffer->mmap_addr, buffer->mmap_size); | |
1180 | buffer->mmap_addr = NULL; | |
1181 | buffer->mmap_size = 0; | |
1182 | buffer->data = NULL; | |
1183 | buffer->use_data = NULL; | |
1184 | } | |
1185 | ||
1186 | void auxtrace_buffer__drop_data(struct auxtrace_buffer *buffer) | |
1187 | { | |
1188 | auxtrace_buffer__put_data(buffer); | |
1189 | if (buffer->data_needs_freeing) { | |
1190 | buffer->data_needs_freeing = false; | |
1191 | zfree(&buffer->data); | |
1192 | buffer->use_data = NULL; | |
1193 | buffer->size = 0; | |
1194 | } | |
1195 | } | |
1196 | ||
1197 | void auxtrace_buffer__free(struct auxtrace_buffer *buffer) | |
1198 | { | |
1199 | auxtrace_buffer__drop_data(buffer); | |
1200 | free(buffer); | |
1201 | } | |
1202 | ||
7151c1d1 AH |
1203 | void auxtrace_synth_guest_error(struct perf_record_auxtrace_error *auxtrace_error, int type, |
1204 | int code, int cpu, pid_t pid, pid_t tid, u64 ip, | |
1205 | const char *msg, u64 timestamp, | |
1206 | pid_t machine_pid, int vcpu) | |
85ed4729 AH |
1207 | { |
1208 | size_t size; | |
1209 | ||
72932371 | 1210 | memset(auxtrace_error, 0, sizeof(struct perf_record_auxtrace_error)); |
85ed4729 AH |
1211 | |
1212 | auxtrace_error->header.type = PERF_RECORD_AUXTRACE_ERROR; | |
1213 | auxtrace_error->type = type; | |
1214 | auxtrace_error->code = code; | |
1215 | auxtrace_error->cpu = cpu; | |
1216 | auxtrace_error->pid = pid; | |
1217 | auxtrace_error->tid = tid; | |
16bd4321 | 1218 | auxtrace_error->fmt = 1; |
85ed4729 | 1219 | auxtrace_error->ip = ip; |
16bd4321 | 1220 | auxtrace_error->time = timestamp; |
85ed4729 | 1221 | strlcpy(auxtrace_error->msg, msg, MAX_AUXTRACE_ERROR_MSG); |
7151c1d1 AH |
1222 | if (machine_pid) { |
1223 | auxtrace_error->fmt = 2; | |
1224 | auxtrace_error->machine_pid = machine_pid; | |
1225 | auxtrace_error->vcpu = vcpu; | |
1226 | size = sizeof(*auxtrace_error); | |
1227 | } else { | |
1228 | size = (void *)auxtrace_error->msg - (void *)auxtrace_error + | |
1229 | strlen(auxtrace_error->msg) + 1; | |
1230 | } | |
85ed4729 AH |
1231 | auxtrace_error->header.size = PERF_ALIGN(size, sizeof(u64)); |
1232 | } | |
1233 | ||
7151c1d1 AH |
1234 | void auxtrace_synth_error(struct perf_record_auxtrace_error *auxtrace_error, int type, |
1235 | int code, int cpu, pid_t pid, pid_t tid, u64 ip, | |
1236 | const char *msg, u64 timestamp) | |
1237 | { | |
1238 | auxtrace_synth_guest_error(auxtrace_error, type, code, cpu, pid, tid, | |
1239 | ip, msg, timestamp, 0, -1); | |
1240 | } | |
1241 | ||
9e0cc4fe AH |
1242 | int perf_event__synthesize_auxtrace_info(struct auxtrace_record *itr, |
1243 | struct perf_tool *tool, | |
1244 | struct perf_session *session, | |
1245 | perf_event__handler_t process) | |
1246 | { | |
1247 | union perf_event *ev; | |
1248 | size_t priv_size; | |
1249 | int err; | |
1250 | ||
1251 | pr_debug2("Synthesizing auxtrace information\n"); | |
14a05e13 | 1252 | priv_size = auxtrace_record__info_priv_size(itr, session->evlist); |
72932371 | 1253 | ev = zalloc(sizeof(struct perf_record_auxtrace_info) + priv_size); |
9e0cc4fe AH |
1254 | if (!ev) |
1255 | return -ENOMEM; | |
1256 | ||
1257 | ev->auxtrace_info.header.type = PERF_RECORD_AUXTRACE_INFO; | |
72932371 | 1258 | ev->auxtrace_info.header.size = sizeof(struct perf_record_auxtrace_info) + |
9e0cc4fe AH |
1259 | priv_size; |
1260 | err = auxtrace_record__info_fill(itr, session, &ev->auxtrace_info, | |
1261 | priv_size); | |
1262 | if (err) | |
1263 | goto out_free; | |
1264 | ||
1265 | err = process(tool, ev, NULL, NULL); | |
1266 | out_free: | |
1267 | free(ev); | |
1268 | return err; | |
1269 | } | |
1270 | ||
5c7bec0c AH |
1271 | static void unleader_evsel(struct evlist *evlist, struct evsel *leader) |
1272 | { | |
1273 | struct evsel *new_leader = NULL; | |
1274 | struct evsel *evsel; | |
1275 | ||
1276 | /* Find new leader for the group */ | |
1277 | evlist__for_each_entry(evlist, evsel) { | |
fba7c866 | 1278 | if (!evsel__has_leader(evsel, leader) || evsel == leader) |
5c7bec0c AH |
1279 | continue; |
1280 | if (!new_leader) | |
1281 | new_leader = evsel; | |
fba7c866 | 1282 | evsel__set_leader(evsel, new_leader); |
5c7bec0c AH |
1283 | } |
1284 | ||
1285 | /* Update group information */ | |
1286 | if (new_leader) { | |
1287 | zfree(&new_leader->group_name); | |
1288 | new_leader->group_name = leader->group_name; | |
1289 | leader->group_name = NULL; | |
1290 | ||
1291 | new_leader->core.nr_members = leader->core.nr_members - 1; | |
1292 | leader->core.nr_members = 1; | |
1293 | } | |
1294 | } | |
1295 | ||
1296 | static void unleader_auxtrace(struct perf_session *session) | |
1297 | { | |
1298 | struct evsel *evsel; | |
1299 | ||
1300 | evlist__for_each_entry(session->evlist, evsel) { | |
1301 | if (auxtrace__evsel_is_auxtrace(session, evsel) && | |
c754c382 | 1302 | evsel__is_group_leader(evsel)) { |
5c7bec0c AH |
1303 | unleader_evsel(session->evlist, evsel); |
1304 | } | |
1305 | } | |
1306 | } | |
1307 | ||
89f1688a JO |
1308 | int perf_event__process_auxtrace_info(struct perf_session *session, |
1309 | union perf_event *event) | |
73f75fb1 AH |
1310 | { |
1311 | enum auxtrace_type type = event->auxtrace_info.type; | |
5c7bec0c | 1312 | int err; |
73f75fb1 AH |
1313 | |
1314 | if (dump_trace) | |
1315 | fprintf(stdout, " type: %u\n", type); | |
1316 | ||
1317 | switch (type) { | |
55ea4ab4 | 1318 | case PERF_AUXTRACE_INTEL_PT: |
5c7bec0c AH |
1319 | err = intel_pt_process_auxtrace_info(event, session); |
1320 | break; | |
d0170af7 | 1321 | case PERF_AUXTRACE_INTEL_BTS: |
5c7bec0c AH |
1322 | err = intel_bts_process_auxtrace_info(event, session); |
1323 | break; | |
ffd3d18c | 1324 | case PERF_AUXTRACE_ARM_SPE: |
5c7bec0c AH |
1325 | err = arm_spe_process_auxtrace_info(event, session); |
1326 | break; | |
a818c563 | 1327 | case PERF_AUXTRACE_CS_ETM: |
5c7bec0c AH |
1328 | err = cs_etm__process_auxtrace_info(event, session); |
1329 | break; | |
b96e6615 | 1330 | case PERF_AUXTRACE_S390_CPUMSF: |
5c7bec0c AH |
1331 | err = s390_cpumsf_process_auxtrace_info(event, session); |
1332 | break; | |
057381a7 | 1333 | case PERF_AUXTRACE_HISI_PTT: |
5e91e57e QL |
1334 | err = hisi_ptt_process_auxtrace_info(event, session); |
1335 | break; | |
73f75fb1 AH |
1336 | case PERF_AUXTRACE_UNKNOWN: |
1337 | default: | |
1338 | return -EINVAL; | |
1339 | } | |
5c7bec0c AH |
1340 | |
1341 | if (err) | |
1342 | return err; | |
1343 | ||
1344 | unleader_auxtrace(session); | |
1345 | ||
1346 | return 0; | |
73f75fb1 AH |
1347 | } |
1348 | ||
7336555a JO |
1349 | s64 perf_event__process_auxtrace(struct perf_session *session, |
1350 | union perf_event *event) | |
73f75fb1 AH |
1351 | { |
1352 | s64 err; | |
1353 | ||
1354 | if (dump_trace) | |
306c9d24 | 1355 | fprintf(stdout, " size: %#"PRI_lx64" offset: %#"PRI_lx64" ref: %#"PRI_lx64" idx: %u tid: %d cpu: %d\n", |
73f75fb1 AH |
1356 | event->auxtrace.size, event->auxtrace.offset, |
1357 | event->auxtrace.reference, event->auxtrace.idx, | |
1358 | event->auxtrace.tid, event->auxtrace.cpu); | |
1359 | ||
1360 | if (auxtrace__dont_decode(session)) | |
1361 | return event->auxtrace.size; | |
1362 | ||
1363 | if (!session->auxtrace || event->header.type != PERF_RECORD_AUXTRACE) | |
1364 | return -EINVAL; | |
1365 | ||
7336555a | 1366 | err = session->auxtrace->process_auxtrace_event(session, event, session->tool); |
73f75fb1 AH |
1367 | if (err < 0) |
1368 | return err; | |
1369 | ||
1370 | return event->auxtrace.size; | |
1371 | } | |
1372 | ||
f6986c95 AH |
1373 | #define PERF_ITRACE_DEFAULT_PERIOD_TYPE PERF_ITRACE_PERIOD_NANOSECS |
1374 | #define PERF_ITRACE_DEFAULT_PERIOD 100000 | |
1375 | #define PERF_ITRACE_DEFAULT_CALLCHAIN_SZ 16 | |
1376 | #define PERF_ITRACE_MAX_CALLCHAIN_SZ 1024 | |
601897b5 AH |
1377 | #define PERF_ITRACE_DEFAULT_LAST_BRANCH_SZ 64 |
1378 | #define PERF_ITRACE_MAX_LAST_BRANCH_SZ 1024 | |
f6986c95 | 1379 | |
4eb06815 AK |
1380 | void itrace_synth_opts__set_default(struct itrace_synth_opts *synth_opts, |
1381 | bool no_sample) | |
f6986c95 | 1382 | { |
f6986c95 | 1383 | synth_opts->branches = true; |
53c76b0e | 1384 | synth_opts->transactions = true; |
3bdafdff | 1385 | synth_opts->ptwrites = true; |
70d110d7 | 1386 | synth_opts->pwr_events = true; |
181ebb5e | 1387 | synth_opts->other_events = true; |
8ee9a9ab | 1388 | synth_opts->intr_events = true; |
f6986c95 | 1389 | synth_opts->errors = true; |
9f74d770 TX |
1390 | synth_opts->flc = true; |
1391 | synth_opts->llc = true; | |
1392 | synth_opts->tlb = true; | |
014a771c | 1393 | synth_opts->mem = true; |
9f74d770 TX |
1394 | synth_opts->remote_access = true; |
1395 | ||
4eb06815 AK |
1396 | if (no_sample) { |
1397 | synth_opts->period_type = PERF_ITRACE_PERIOD_INSTRUCTIONS; | |
1398 | synth_opts->period = 1; | |
1399 | synth_opts->calls = true; | |
1400 | } else { | |
1401 | synth_opts->instructions = true; | |
7e55b956 | 1402 | synth_opts->cycles = true; |
4eb06815 AK |
1403 | synth_opts->period_type = PERF_ITRACE_DEFAULT_PERIOD_TYPE; |
1404 | synth_opts->period = PERF_ITRACE_DEFAULT_PERIOD; | |
1405 | } | |
f6986c95 | 1406 | synth_opts->callchain_sz = PERF_ITRACE_DEFAULT_CALLCHAIN_SZ; |
601897b5 | 1407 | synth_opts->last_branch_sz = PERF_ITRACE_DEFAULT_LAST_BRANCH_SZ; |
d1706b39 | 1408 | synth_opts->initial_skip = 0; |
f6986c95 AH |
1409 | } |
1410 | ||
cb971438 AH |
1411 | static int get_flag(const char **ptr, unsigned int *flags) |
1412 | { | |
1413 | while (1) { | |
1414 | char c = **ptr; | |
1415 | ||
1416 | if (c >= 'a' && c <= 'z') { | |
1417 | *flags |= 1 << (c - 'a'); | |
1418 | ++*ptr; | |
1419 | return 0; | |
1420 | } else if (c == ' ') { | |
1421 | ++*ptr; | |
1422 | continue; | |
1423 | } else { | |
1424 | return -1; | |
1425 | } | |
1426 | } | |
1427 | } | |
1428 | ||
1429 | static int get_flags(const char **ptr, unsigned int *plus_flags, unsigned int *minus_flags) | |
1430 | { | |
1431 | while (1) { | |
1432 | switch (**ptr) { | |
1433 | case '+': | |
1434 | ++*ptr; | |
1435 | if (get_flag(ptr, plus_flags)) | |
1436 | return -1; | |
1437 | break; | |
1438 | case '-': | |
1439 | ++*ptr; | |
1440 | if (get_flag(ptr, minus_flags)) | |
1441 | return -1; | |
1442 | break; | |
1443 | case ' ': | |
1444 | ++*ptr; | |
1445 | break; | |
1446 | default: | |
1447 | return 0; | |
1448 | } | |
1449 | } | |
1450 | } | |
1451 | ||
a7fdd30a AH |
1452 | #define ITRACE_DFLT_LOG_ON_ERROR_SZ 16384 |
1453 | ||
1454 | static unsigned int itrace_log_on_error_size(void) | |
1455 | { | |
1456 | unsigned int sz = 0; | |
1457 | ||
1458 | perf_config_scan("itrace.debug-log-buffer-size", "%u", &sz); | |
1459 | return sz ?: ITRACE_DFLT_LOG_ON_ERROR_SZ; | |
1460 | } | |
1461 | ||
f6986c95 AH |
1462 | /* |
1463 | * Please check tools/perf/Documentation/perf-script.txt for information | |
1464 | * about the options parsed here, which is introduced after this cset, | |
1465 | * when support in 'perf script' for these options is introduced. | |
1466 | */ | |
e621b8ff AH |
1467 | int itrace_do_parse_synth_opts(struct itrace_synth_opts *synth_opts, |
1468 | const char *str, int unset) | |
f6986c95 | 1469 | { |
f6986c95 AH |
1470 | const char *p; |
1471 | char *endptr; | |
f70cfa07 | 1472 | bool period_type_set = false; |
e1791347 | 1473 | bool period_set = false; |
bb69c912 | 1474 | bool iy = false; |
f6986c95 AH |
1475 | |
1476 | synth_opts->set = true; | |
1477 | ||
1478 | if (unset) { | |
1479 | synth_opts->dont_decode = true; | |
1480 | return 0; | |
1481 | } | |
1482 | ||
1483 | if (!str) { | |
355200e0 AH |
1484 | itrace_synth_opts__set_default(synth_opts, |
1485 | synth_opts->default_no_sample); | |
f6986c95 AH |
1486 | return 0; |
1487 | } | |
1488 | ||
1489 | for (p = str; *p;) { | |
1490 | switch (*p++) { | |
1491 | case 'i': | |
7e55b956 | 1492 | case 'y': |
bb69c912 | 1493 | iy = true; |
7e55b956 SG |
1494 | if (p[-1] == 'y') |
1495 | synth_opts->cycles = true; | |
1496 | else | |
1497 | synth_opts->instructions = true; | |
f6986c95 AH |
1498 | while (*p == ' ' || *p == ',') |
1499 | p += 1; | |
1500 | if (isdigit(*p)) { | |
1501 | synth_opts->period = strtoull(p, &endptr, 10); | |
e1791347 | 1502 | period_set = true; |
f6986c95 AH |
1503 | p = endptr; |
1504 | while (*p == ' ' || *p == ',') | |
1505 | p += 1; | |
1506 | switch (*p++) { | |
1507 | case 'i': | |
1508 | synth_opts->period_type = | |
1509 | PERF_ITRACE_PERIOD_INSTRUCTIONS; | |
f70cfa07 | 1510 | period_type_set = true; |
f6986c95 AH |
1511 | break; |
1512 | case 't': | |
1513 | synth_opts->period_type = | |
1514 | PERF_ITRACE_PERIOD_TICKS; | |
f70cfa07 | 1515 | period_type_set = true; |
f6986c95 AH |
1516 | break; |
1517 | case 'm': | |
1518 | synth_opts->period *= 1000; | |
1519 | /* Fall through */ | |
1520 | case 'u': | |
1521 | synth_opts->period *= 1000; | |
1522 | /* Fall through */ | |
1523 | case 'n': | |
1524 | if (*p++ != 's') | |
1525 | goto out_err; | |
1526 | synth_opts->period_type = | |
1527 | PERF_ITRACE_PERIOD_NANOSECS; | |
f70cfa07 | 1528 | period_type_set = true; |
f6986c95 AH |
1529 | break; |
1530 | case '\0': | |
1531 | goto out; | |
1532 | default: | |
1533 | goto out_err; | |
1534 | } | |
1535 | } | |
1536 | break; | |
1537 | case 'b': | |
1538 | synth_opts->branches = true; | |
1539 | break; | |
53c76b0e AH |
1540 | case 'x': |
1541 | synth_opts->transactions = true; | |
1542 | break; | |
3bdafdff AH |
1543 | case 'w': |
1544 | synth_opts->ptwrites = true; | |
1545 | break; | |
70d110d7 AH |
1546 | case 'p': |
1547 | synth_opts->pwr_events = true; | |
1548 | break; | |
181ebb5e AH |
1549 | case 'o': |
1550 | synth_opts->other_events = true; | |
1551 | break; | |
8ee9a9ab AH |
1552 | case 'I': |
1553 | synth_opts->intr_events = true; | |
1554 | break; | |
f6986c95 AH |
1555 | case 'e': |
1556 | synth_opts->errors = true; | |
cb971438 AH |
1557 | if (get_flags(&p, &synth_opts->error_plus_flags, |
1558 | &synth_opts->error_minus_flags)) | |
1559 | goto out_err; | |
f6986c95 AH |
1560 | break; |
1561 | case 'd': | |
1562 | synth_opts->log = true; | |
935aac2d AH |
1563 | if (get_flags(&p, &synth_opts->log_plus_flags, |
1564 | &synth_opts->log_minus_flags)) | |
1565 | goto out_err; | |
a7fdd30a AH |
1566 | if (synth_opts->log_plus_flags & AUXTRACE_LOG_FLG_ON_ERROR) |
1567 | synth_opts->log_on_error_size = itrace_log_on_error_size(); | |
f6986c95 AH |
1568 | break; |
1569 | case 'c': | |
1570 | synth_opts->branches = true; | |
1571 | synth_opts->calls = true; | |
1572 | break; | |
1573 | case 'r': | |
1574 | synth_opts->branches = true; | |
1575 | synth_opts->returns = true; | |
1576 | break; | |
1c5c25b3 | 1577 | case 'G': |
f6986c95 | 1578 | case 'g': |
1c5c25b3 AH |
1579 | if (p[-1] == 'G') |
1580 | synth_opts->add_callchain = true; | |
1581 | else | |
1582 | synth_opts->callchain = true; | |
f6986c95 AH |
1583 | synth_opts->callchain_sz = |
1584 | PERF_ITRACE_DEFAULT_CALLCHAIN_SZ; | |
1585 | while (*p == ' ' || *p == ',') | |
1586 | p += 1; | |
1587 | if (isdigit(*p)) { | |
1588 | unsigned int val; | |
1589 | ||
1590 | val = strtoul(p, &endptr, 10); | |
1591 | p = endptr; | |
1592 | if (!val || val > PERF_ITRACE_MAX_CALLCHAIN_SZ) | |
1593 | goto out_err; | |
1594 | synth_opts->callchain_sz = val; | |
1595 | } | |
1596 | break; | |
ec90e42c | 1597 | case 'L': |
601897b5 | 1598 | case 'l': |
ec90e42c AH |
1599 | if (p[-1] == 'L') |
1600 | synth_opts->add_last_branch = true; | |
1601 | else | |
1602 | synth_opts->last_branch = true; | |
601897b5 AH |
1603 | synth_opts->last_branch_sz = |
1604 | PERF_ITRACE_DEFAULT_LAST_BRANCH_SZ; | |
1605 | while (*p == ' ' || *p == ',') | |
1606 | p += 1; | |
1607 | if (isdigit(*p)) { | |
1608 | unsigned int val; | |
1609 | ||
1610 | val = strtoul(p, &endptr, 10); | |
1611 | p = endptr; | |
1612 | if (!val || | |
1613 | val > PERF_ITRACE_MAX_LAST_BRANCH_SZ) | |
1614 | goto out_err; | |
1615 | synth_opts->last_branch_sz = val; | |
1616 | } | |
1617 | break; | |
d1706b39 AK |
1618 | case 's': |
1619 | synth_opts->initial_skip = strtoul(p, &endptr, 10); | |
1620 | if (p == endptr) | |
1621 | goto out_err; | |
1622 | p = endptr; | |
1623 | break; | |
9f74d770 TX |
1624 | case 'f': |
1625 | synth_opts->flc = true; | |
1626 | break; | |
1627 | case 'm': | |
1628 | synth_opts->llc = true; | |
1629 | break; | |
1630 | case 't': | |
1631 | synth_opts->tlb = true; | |
1632 | break; | |
1633 | case 'a': | |
1634 | synth_opts->remote_access = true; | |
1635 | break; | |
014a771c LY |
1636 | case 'M': |
1637 | synth_opts->mem = true; | |
1638 | break; | |
51971536 AH |
1639 | case 'q': |
1640 | synth_opts->quick += 1; | |
1641 | break; | |
b6778fe1 AH |
1642 | case 'A': |
1643 | synth_opts->approx_ipc = true; | |
1644 | break; | |
18f49494 AH |
1645 | case 'Z': |
1646 | synth_opts->timeless_decoding = true; | |
1647 | break; | |
26218331 LY |
1648 | case 'T': |
1649 | synth_opts->use_timestamp = true; | |
1650 | break; | |
f6986c95 AH |
1651 | case ' ': |
1652 | case ',': | |
1653 | break; | |
1654 | default: | |
1655 | goto out_err; | |
1656 | } | |
1657 | } | |
1658 | out: | |
bb69c912 | 1659 | if (iy) { |
f70cfa07 | 1660 | if (!period_type_set) |
f6986c95 AH |
1661 | synth_opts->period_type = |
1662 | PERF_ITRACE_DEFAULT_PERIOD_TYPE; | |
e1791347 | 1663 | if (!period_set) |
f6986c95 AH |
1664 | synth_opts->period = PERF_ITRACE_DEFAULT_PERIOD; |
1665 | } | |
1666 | ||
1667 | return 0; | |
1668 | ||
1669 | out_err: | |
1670 | pr_err("Bad Instruction Tracing options '%s'\n", str); | |
1671 | return -EINVAL; | |
1672 | } | |
1673 | ||
e621b8ff AH |
1674 | int itrace_parse_synth_opts(const struct option *opt, const char *str, int unset) |
1675 | { | |
1676 | return itrace_do_parse_synth_opts(opt->value, str, unset); | |
1677 | } | |
1678 | ||
85ed4729 AH |
1679 | static const char * const auxtrace_error_type_name[] = { |
1680 | [PERF_AUXTRACE_ERROR_ITRACE] = "instruction trace", | |
1681 | }; | |
1682 | ||
1683 | static const char *auxtrace_error_name(int type) | |
1684 | { | |
1685 | const char *error_type_name = NULL; | |
1686 | ||
1687 | if (type < PERF_AUXTRACE_ERROR_MAX) | |
1688 | error_type_name = auxtrace_error_type_name[type]; | |
1689 | if (!error_type_name) | |
1690 | error_type_name = "unknown AUX"; | |
1691 | return error_type_name; | |
1692 | } | |
1693 | ||
1694 | size_t perf_event__fprintf_auxtrace_error(union perf_event *event, FILE *fp) | |
1695 | { | |
72932371 | 1696 | struct perf_record_auxtrace_error *e = &event->auxtrace_error; |
16bd4321 AH |
1697 | unsigned long long nsecs = e->time; |
1698 | const char *msg = e->msg; | |
85ed4729 AH |
1699 | int ret; |
1700 | ||
1701 | ret = fprintf(fp, " %s error type %u", | |
1702 | auxtrace_error_name(e->type), e->type); | |
16bd4321 AH |
1703 | |
1704 | if (e->fmt && nsecs) { | |
1705 | unsigned long secs = nsecs / NSEC_PER_SEC; | |
1706 | ||
1707 | nsecs -= secs * NSEC_PER_SEC; | |
1708 | ret += fprintf(fp, " time %lu.%09llu", secs, nsecs); | |
1709 | } else { | |
1710 | ret += fprintf(fp, " time 0"); | |
1711 | } | |
1712 | ||
1713 | if (!e->fmt) | |
1714 | msg = (const char *)&e->time; | |
1715 | ||
7151c1d1 AH |
1716 | if (e->fmt >= 2 && e->machine_pid) |
1717 | ret += fprintf(fp, " machine_pid %d vcpu %d", e->machine_pid, e->vcpu); | |
1718 | ||
3460efb2 | 1719 | ret += fprintf(fp, " cpu %d pid %d tid %d ip %#"PRI_lx64" code %u: %s\n", |
16bd4321 | 1720 | e->cpu, e->pid, e->tid, e->ip, e->code, msg); |
85ed4729 AH |
1721 | return ret; |
1722 | } | |
1723 | ||
1724 | void perf_session__auxtrace_error_inc(struct perf_session *session, | |
1725 | union perf_event *event) | |
1726 | { | |
72932371 | 1727 | struct perf_record_auxtrace_error *e = &event->auxtrace_error; |
85ed4729 AH |
1728 | |
1729 | if (e->type < PERF_AUXTRACE_ERROR_MAX) | |
1730 | session->evlist->stats.nr_auxtrace_errors[e->type] += 1; | |
1731 | } | |
1732 | ||
1733 | void events_stats__auxtrace_error_warn(const struct events_stats *stats) | |
1734 | { | |
1735 | int i; | |
1736 | ||
1737 | for (i = 0; i < PERF_AUXTRACE_ERROR_MAX; i++) { | |
1738 | if (!stats->nr_auxtrace_errors[i]) | |
1739 | continue; | |
1740 | ui__warning("%u %s errors\n", | |
1741 | stats->nr_auxtrace_errors[i], | |
1742 | auxtrace_error_name(i)); | |
1743 | } | |
1744 | } | |
1745 | ||
89f1688a JO |
1746 | int perf_event__process_auxtrace_error(struct perf_session *session, |
1747 | union perf_event *event) | |
85ed4729 | 1748 | { |
73f75fb1 AH |
1749 | if (auxtrace__dont_decode(session)) |
1750 | return 0; | |
1751 | ||
85ed4729 AH |
1752 | perf_event__fprintf_auxtrace_error(event, stdout); |
1753 | return 0; | |
1754 | } | |
1755 | ||
bbc49f12 LY |
1756 | /* |
1757 | * In the compat mode kernel runs in 64-bit and perf tool runs in 32-bit mode, | |
1758 | * 32-bit perf tool cannot access 64-bit value atomically, which might lead to | |
1759 | * the issues caused by the below sequence on multiple CPUs: when perf tool | |
1760 | * accesses either the load operation or the store operation for 64-bit value, | |
1761 | * on some architectures the operation is divided into two instructions, one | |
1762 | * is for accessing the low 32-bit value and another is for the high 32-bit; | |
1763 | * thus these two user operations can give the kernel chances to access the | |
1764 | * 64-bit value, and thus leads to the unexpected load values. | |
1765 | * | |
1766 | * kernel (64-bit) user (32-bit) | |
1767 | * | |
1768 | * if (LOAD ->aux_tail) { --, LOAD ->aux_head_lo | |
1769 | * STORE $aux_data | ,---> | |
1770 | * FLUSH $aux_data | | LOAD ->aux_head_hi | |
1771 | * STORE ->aux_head --|-------` smp_rmb() | |
1772 | * } | LOAD $data | |
1773 | * | smp_mb() | |
1774 | * | STORE ->aux_tail_lo | |
1775 | * `-----------> | |
1776 | * STORE ->aux_tail_hi | |
1777 | * | |
1778 | * For this reason, it's impossible for the perf tool to work correctly when | |
1779 | * the AUX head or tail is bigger than 4GB (more than 32 bits length); and we | |
1780 | * can not simply limit the AUX ring buffer to less than 4GB, the reason is | |
1781 | * the pointers can be increased monotonically, whatever the buffer size it is, | |
1782 | * at the end the head and tail can be bigger than 4GB and carry out to the | |
1783 | * high 32-bit. | |
1784 | * | |
1785 | * To mitigate the issues and improve the user experience, we can allow the | |
1786 | * perf tool working in certain conditions and bail out with error if detect | |
1787 | * any overflow cannot be handled. | |
1788 | * | |
1789 | * For reading the AUX head, it reads out the values for three times, and | |
1790 | * compares the high 4 bytes of the values between the first time and the last | |
1791 | * time, if there has no change for high 4 bytes injected by the kernel during | |
1792 | * the user reading sequence, it's safe for use the second value. | |
1793 | * | |
1794 | * When compat_auxtrace_mmap__write_tail() detects any carrying in the high | |
1795 | * 32 bits, it means there have two store operations in user space and it cannot | |
1796 | * promise the atomicity for 64-bit write, so return '-1' in this case to tell | |
1797 | * the caller an overflow error has happened. | |
1798 | */ | |
1799 | u64 __weak compat_auxtrace_mmap__read_head(struct auxtrace_mmap *mm) | |
1800 | { | |
1801 | struct perf_event_mmap_page *pc = mm->userpg; | |
1802 | u64 first, second, last; | |
1803 | u64 mask = (u64)(UINT32_MAX) << 32; | |
1804 | ||
1805 | do { | |
1806 | first = READ_ONCE(pc->aux_head); | |
1807 | /* Ensure all reads are done after we read the head */ | |
1808 | smp_rmb(); | |
1809 | second = READ_ONCE(pc->aux_head); | |
1810 | /* Ensure all reads are done after we read the head */ | |
1811 | smp_rmb(); | |
1812 | last = READ_ONCE(pc->aux_head); | |
1813 | } while ((first & mask) != (last & mask)); | |
1814 | ||
1815 | return second; | |
1816 | } | |
1817 | ||
1818 | int __weak compat_auxtrace_mmap__write_tail(struct auxtrace_mmap *mm, u64 tail) | |
1819 | { | |
1820 | struct perf_event_mmap_page *pc = mm->userpg; | |
1821 | u64 mask = (u64)(UINT32_MAX) << 32; | |
1822 | ||
1823 | if (tail & mask) | |
1824 | return -1; | |
1825 | ||
1826 | /* Ensure all reads are done before we write the tail out */ | |
1827 | smp_mb(); | |
1828 | WRITE_ONCE(pc->aux_tail, tail); | |
1829 | return 0; | |
1830 | } | |
1831 | ||
a5830532 | 1832 | static int __auxtrace_mmap__read(struct mmap *map, |
d20031bb AH |
1833 | struct auxtrace_record *itr, |
1834 | struct perf_tool *tool, process_auxtrace_t fn, | |
1835 | bool snapshot, size_t snapshot_size) | |
9e0cc4fe | 1836 | { |
e035f4ca | 1837 | struct auxtrace_mmap *mm = &map->auxtrace_mmap; |
d20031bb | 1838 | u64 head, old = mm->prev, offset, ref; |
9e0cc4fe AH |
1839 | unsigned char *data = mm->base; |
1840 | size_t size, head_off, old_off, len1, len2, padding; | |
1841 | union perf_event ev; | |
1842 | void *data1, *data2; | |
bbc49f12 | 1843 | int kernel_is_64_bit = perf_env__kernel_is_64_bit(evsel__env(NULL)); |
9e0cc4fe | 1844 | |
bbc49f12 | 1845 | head = auxtrace_mmap__read_head(mm, kernel_is_64_bit); |
9d645033 LY |
1846 | |
1847 | if (snapshot && | |
1848 | auxtrace_record__find_snapshot(itr, mm->idx, mm, data, &head, &old)) | |
1849 | return -1; | |
d20031bb | 1850 | |
9e0cc4fe AH |
1851 | if (old == head) |
1852 | return 0; | |
1853 | ||
1854 | pr_debug3("auxtrace idx %d old %#"PRIx64" head %#"PRIx64" diff %#"PRIx64"\n", | |
1855 | mm->idx, old, head, head - old); | |
1856 | ||
1857 | if (mm->mask) { | |
1858 | head_off = head & mm->mask; | |
1859 | old_off = old & mm->mask; | |
1860 | } else { | |
1861 | head_off = head % mm->len; | |
1862 | old_off = old % mm->len; | |
1863 | } | |
1864 | ||
1865 | if (head_off > old_off) | |
1866 | size = head_off - old_off; | |
1867 | else | |
1868 | size = mm->len - (old_off - head_off); | |
1869 | ||
d20031bb AH |
1870 | if (snapshot && size > snapshot_size) |
1871 | size = snapshot_size; | |
1872 | ||
9e0cc4fe AH |
1873 | ref = auxtrace_record__reference(itr); |
1874 | ||
1875 | if (head > old || size <= head || mm->mask) { | |
1876 | offset = head - size; | |
1877 | } else { | |
1878 | /* | |
1879 | * When the buffer size is not a power of 2, 'head' wraps at the | |
1880 | * highest multiple of the buffer size, so we have to subtract | |
1881 | * the remainder here. | |
1882 | */ | |
1883 | u64 rem = (0ULL - mm->len) % mm->len; | |
1884 | ||
1885 | offset = head - size - rem; | |
1886 | } | |
1887 | ||
1888 | if (size > head_off) { | |
1889 | len1 = size - head_off; | |
1890 | data1 = &data[mm->len - len1]; | |
1891 | len2 = head_off; | |
1892 | data2 = &data[0]; | |
1893 | } else { | |
1894 | len1 = size; | |
1895 | data1 = &data[head_off - len1]; | |
1896 | len2 = 0; | |
1897 | data2 = NULL; | |
1898 | } | |
1899 | ||
83b2ea25 AH |
1900 | if (itr->alignment) { |
1901 | unsigned int unwanted = len1 % itr->alignment; | |
1902 | ||
1903 | len1 -= unwanted; | |
1904 | size -= unwanted; | |
1905 | } | |
1906 | ||
9e0cc4fe | 1907 | /* padding must be written by fn() e.g. record__process_auxtrace() */ |
c3fcadf0 | 1908 | padding = size & (PERF_AUXTRACE_RECORD_ALIGNMENT - 1); |
9e0cc4fe | 1909 | if (padding) |
c3fcadf0 | 1910 | padding = PERF_AUXTRACE_RECORD_ALIGNMENT - padding; |
9e0cc4fe AH |
1911 | |
1912 | memset(&ev, 0, sizeof(ev)); | |
1913 | ev.auxtrace.header.type = PERF_RECORD_AUXTRACE; | |
1914 | ev.auxtrace.header.size = sizeof(ev.auxtrace); | |
1915 | ev.auxtrace.size = size + padding; | |
1916 | ev.auxtrace.offset = offset; | |
1917 | ev.auxtrace.reference = ref; | |
1918 | ev.auxtrace.idx = mm->idx; | |
1919 | ev.auxtrace.tid = mm->tid; | |
1920 | ev.auxtrace.cpu = mm->cpu; | |
1921 | ||
ded2b8fe | 1922 | if (fn(tool, map, &ev, data1, len1, data2, len2)) |
9e0cc4fe AH |
1923 | return -1; |
1924 | ||
1925 | mm->prev = head; | |
1926 | ||
d20031bb | 1927 | if (!snapshot) { |
bbc49f12 LY |
1928 | int err; |
1929 | ||
1930 | err = auxtrace_mmap__write_tail(mm, head, kernel_is_64_bit); | |
1931 | if (err < 0) | |
1932 | return err; | |
9e0cc4fe | 1933 | |
bbc49f12 | 1934 | if (itr->read_finish) { |
d20031bb AH |
1935 | err = itr->read_finish(itr, mm->idx); |
1936 | if (err < 0) | |
1937 | return err; | |
1938 | } | |
9e0cc4fe AH |
1939 | } |
1940 | ||
1941 | return 1; | |
1942 | } | |
c3278f02 | 1943 | |
a5830532 | 1944 | int auxtrace_mmap__read(struct mmap *map, struct auxtrace_record *itr, |
d20031bb AH |
1945 | struct perf_tool *tool, process_auxtrace_t fn) |
1946 | { | |
e035f4ca | 1947 | return __auxtrace_mmap__read(map, itr, tool, fn, false, 0); |
d20031bb AH |
1948 | } |
1949 | ||
a5830532 | 1950 | int auxtrace_mmap__read_snapshot(struct mmap *map, |
d20031bb AH |
1951 | struct auxtrace_record *itr, |
1952 | struct perf_tool *tool, process_auxtrace_t fn, | |
1953 | size_t snapshot_size) | |
1954 | { | |
e035f4ca | 1955 | return __auxtrace_mmap__read(map, itr, tool, fn, true, snapshot_size); |
d20031bb AH |
1956 | } |
1957 | ||
c3278f02 AH |
1958 | /** |
1959 | * struct auxtrace_cache - hash table to implement a cache | |
1960 | * @hashtable: the hashtable | |
1961 | * @sz: hashtable size (number of hlists) | |
1962 | * @entry_size: size of an entry | |
1963 | * @limit: limit the number of entries to this maximum, when reached the cache | |
1964 | * is dropped and caching begins again with an empty cache | |
1965 | * @cnt: current number of entries | |
1966 | * @bits: hashtable size (@sz = 2^@bits) | |
1967 | */ | |
1968 | struct auxtrace_cache { | |
1969 | struct hlist_head *hashtable; | |
1970 | size_t sz; | |
1971 | size_t entry_size; | |
1972 | size_t limit; | |
1973 | size_t cnt; | |
1974 | unsigned int bits; | |
1975 | }; | |
1976 | ||
1977 | struct auxtrace_cache *auxtrace_cache__new(unsigned int bits, size_t entry_size, | |
1978 | unsigned int limit_percent) | |
1979 | { | |
1980 | struct auxtrace_cache *c; | |
1981 | struct hlist_head *ht; | |
1982 | size_t sz, i; | |
1983 | ||
1984 | c = zalloc(sizeof(struct auxtrace_cache)); | |
1985 | if (!c) | |
1986 | return NULL; | |
1987 | ||
1988 | sz = 1UL << bits; | |
1989 | ||
1990 | ht = calloc(sz, sizeof(struct hlist_head)); | |
1991 | if (!ht) | |
1992 | goto out_free; | |
1993 | ||
1994 | for (i = 0; i < sz; i++) | |
1995 | INIT_HLIST_HEAD(&ht[i]); | |
1996 | ||
1997 | c->hashtable = ht; | |
1998 | c->sz = sz; | |
1999 | c->entry_size = entry_size; | |
2000 | c->limit = (c->sz * limit_percent) / 100; | |
2001 | c->bits = bits; | |
2002 | ||
2003 | return c; | |
2004 | ||
2005 | out_free: | |
2006 | free(c); | |
2007 | return NULL; | |
2008 | } | |
2009 | ||
2010 | static void auxtrace_cache__drop(struct auxtrace_cache *c) | |
2011 | { | |
2012 | struct auxtrace_cache_entry *entry; | |
2013 | struct hlist_node *tmp; | |
2014 | size_t i; | |
2015 | ||
2016 | if (!c) | |
2017 | return; | |
2018 | ||
2019 | for (i = 0; i < c->sz; i++) { | |
2020 | hlist_for_each_entry_safe(entry, tmp, &c->hashtable[i], hash) { | |
2021 | hlist_del(&entry->hash); | |
2022 | auxtrace_cache__free_entry(c, entry); | |
2023 | } | |
2024 | } | |
2025 | ||
2026 | c->cnt = 0; | |
2027 | } | |
2028 | ||
2029 | void auxtrace_cache__free(struct auxtrace_cache *c) | |
2030 | { | |
2031 | if (!c) | |
2032 | return; | |
2033 | ||
2034 | auxtrace_cache__drop(c); | |
d8f9da24 | 2035 | zfree(&c->hashtable); |
c3278f02 AH |
2036 | free(c); |
2037 | } | |
2038 | ||
2039 | void *auxtrace_cache__alloc_entry(struct auxtrace_cache *c) | |
2040 | { | |
2041 | return malloc(c->entry_size); | |
2042 | } | |
2043 | ||
2044 | void auxtrace_cache__free_entry(struct auxtrace_cache *c __maybe_unused, | |
2045 | void *entry) | |
2046 | { | |
2047 | free(entry); | |
2048 | } | |
2049 | ||
2050 | int auxtrace_cache__add(struct auxtrace_cache *c, u32 key, | |
2051 | struct auxtrace_cache_entry *entry) | |
2052 | { | |
2053 | if (c->limit && ++c->cnt > c->limit) | |
2054 | auxtrace_cache__drop(c); | |
2055 | ||
2056 | entry->key = key; | |
2057 | hlist_add_head(&entry->hash, &c->hashtable[hash_32(key, c->bits)]); | |
2058 | ||
2059 | return 0; | |
2060 | } | |
2061 | ||
fd62c109 AH |
2062 | static struct auxtrace_cache_entry *auxtrace_cache__rm(struct auxtrace_cache *c, |
2063 | u32 key) | |
2064 | { | |
2065 | struct auxtrace_cache_entry *entry; | |
2066 | struct hlist_head *hlist; | |
2067 | struct hlist_node *n; | |
2068 | ||
2069 | if (!c) | |
2070 | return NULL; | |
2071 | ||
2072 | hlist = &c->hashtable[hash_32(key, c->bits)]; | |
2073 | hlist_for_each_entry_safe(entry, n, hlist, hash) { | |
2074 | if (entry->key == key) { | |
2075 | hlist_del(&entry->hash); | |
2076 | return entry; | |
2077 | } | |
2078 | } | |
2079 | ||
2080 | return NULL; | |
2081 | } | |
2082 | ||
2083 | void auxtrace_cache__remove(struct auxtrace_cache *c, u32 key) | |
2084 | { | |
2085 | struct auxtrace_cache_entry *entry = auxtrace_cache__rm(c, key); | |
2086 | ||
2087 | auxtrace_cache__free_entry(c, entry); | |
2088 | } | |
2089 | ||
c3278f02 AH |
2090 | void *auxtrace_cache__lookup(struct auxtrace_cache *c, u32 key) |
2091 | { | |
2092 | struct auxtrace_cache_entry *entry; | |
2093 | struct hlist_head *hlist; | |
2094 | ||
2095 | if (!c) | |
2096 | return NULL; | |
2097 | ||
2098 | hlist = &c->hashtable[hash_32(key, c->bits)]; | |
2099 | hlist_for_each_entry(entry, hlist, hash) { | |
2100 | if (entry->key == key) | |
2101 | return entry; | |
2102 | } | |
2103 | ||
2104 | return NULL; | |
2105 | } | |
1b36c03e AH |
2106 | |
2107 | static void addr_filter__free_str(struct addr_filter *filt) | |
2108 | { | |
d8f9da24 | 2109 | zfree(&filt->str); |
1b36c03e AH |
2110 | filt->action = NULL; |
2111 | filt->sym_from = NULL; | |
2112 | filt->sym_to = NULL; | |
2113 | filt->filename = NULL; | |
1b36c03e AH |
2114 | } |
2115 | ||
2116 | static struct addr_filter *addr_filter__new(void) | |
2117 | { | |
2118 | struct addr_filter *filt = zalloc(sizeof(*filt)); | |
2119 | ||
2120 | if (filt) | |
2121 | INIT_LIST_HEAD(&filt->list); | |
2122 | ||
2123 | return filt; | |
2124 | } | |
2125 | ||
2126 | static void addr_filter__free(struct addr_filter *filt) | |
2127 | { | |
2128 | if (filt) | |
2129 | addr_filter__free_str(filt); | |
2130 | free(filt); | |
2131 | } | |
2132 | ||
2133 | static void addr_filters__add(struct addr_filters *filts, | |
2134 | struct addr_filter *filt) | |
2135 | { | |
2136 | list_add_tail(&filt->list, &filts->head); | |
2137 | filts->cnt += 1; | |
2138 | } | |
2139 | ||
2140 | static void addr_filters__del(struct addr_filters *filts, | |
2141 | struct addr_filter *filt) | |
2142 | { | |
2143 | list_del_init(&filt->list); | |
2144 | filts->cnt -= 1; | |
2145 | } | |
2146 | ||
2147 | void addr_filters__init(struct addr_filters *filts) | |
2148 | { | |
2149 | INIT_LIST_HEAD(&filts->head); | |
2150 | filts->cnt = 0; | |
2151 | } | |
2152 | ||
2153 | void addr_filters__exit(struct addr_filters *filts) | |
2154 | { | |
2155 | struct addr_filter *filt, *n; | |
2156 | ||
2157 | list_for_each_entry_safe(filt, n, &filts->head, list) { | |
2158 | addr_filters__del(filts, filt); | |
2159 | addr_filter__free(filt); | |
2160 | } | |
2161 | } | |
2162 | ||
2163 | static int parse_num_or_str(char **inp, u64 *num, const char **str, | |
2164 | const char *str_delim) | |
2165 | { | |
2166 | *inp += strspn(*inp, " "); | |
2167 | ||
2168 | if (isdigit(**inp)) { | |
2169 | char *endptr; | |
2170 | ||
2171 | if (!num) | |
2172 | return -EINVAL; | |
2173 | errno = 0; | |
2174 | *num = strtoull(*inp, &endptr, 0); | |
2175 | if (errno) | |
2176 | return -errno; | |
2177 | if (endptr == *inp) | |
2178 | return -EINVAL; | |
2179 | *inp = endptr; | |
2180 | } else { | |
2181 | size_t n; | |
2182 | ||
2183 | if (!str) | |
2184 | return -EINVAL; | |
2185 | *inp += strspn(*inp, " "); | |
2186 | *str = *inp; | |
2187 | n = strcspn(*inp, str_delim); | |
2188 | if (!n) | |
2189 | return -EINVAL; | |
2190 | *inp += n; | |
2191 | if (**inp) { | |
2192 | **inp = '\0'; | |
2193 | *inp += 1; | |
2194 | } | |
2195 | } | |
2196 | return 0; | |
2197 | } | |
2198 | ||
2199 | static int parse_action(struct addr_filter *filt) | |
2200 | { | |
2201 | if (!strcmp(filt->action, "filter")) { | |
2202 | filt->start = true; | |
2203 | filt->range = true; | |
2204 | } else if (!strcmp(filt->action, "start")) { | |
2205 | filt->start = true; | |
2206 | } else if (!strcmp(filt->action, "stop")) { | |
2207 | filt->start = false; | |
2208 | } else if (!strcmp(filt->action, "tracestop")) { | |
2209 | filt->start = false; | |
2210 | filt->range = true; | |
2211 | filt->action += 5; /* Change 'tracestop' to 'stop' */ | |
2212 | } else { | |
2213 | return -EINVAL; | |
2214 | } | |
2215 | return 0; | |
2216 | } | |
2217 | ||
2218 | static int parse_sym_idx(char **inp, int *idx) | |
2219 | { | |
2220 | *idx = -1; | |
2221 | ||
2222 | *inp += strspn(*inp, " "); | |
2223 | ||
2224 | if (**inp != '#') | |
2225 | return 0; | |
2226 | ||
2227 | *inp += 1; | |
2228 | ||
2229 | if (**inp == 'g' || **inp == 'G') { | |
2230 | *inp += 1; | |
2231 | *idx = 0; | |
2232 | } else { | |
2233 | unsigned long num; | |
2234 | char *endptr; | |
2235 | ||
2236 | errno = 0; | |
2237 | num = strtoul(*inp, &endptr, 0); | |
2238 | if (errno) | |
2239 | return -errno; | |
2240 | if (endptr == *inp || num > INT_MAX) | |
2241 | return -EINVAL; | |
2242 | *inp = endptr; | |
2243 | *idx = num; | |
2244 | } | |
2245 | ||
2246 | return 0; | |
2247 | } | |
2248 | ||
2249 | static int parse_addr_size(char **inp, u64 *num, const char **str, int *idx) | |
2250 | { | |
2251 | int err = parse_num_or_str(inp, num, str, " "); | |
2252 | ||
2253 | if (!err && *str) | |
2254 | err = parse_sym_idx(inp, idx); | |
2255 | ||
2256 | return err; | |
2257 | } | |
2258 | ||
2259 | static int parse_one_filter(struct addr_filter *filt, const char **filter_inp) | |
2260 | { | |
2261 | char *fstr; | |
2262 | int err; | |
2263 | ||
2264 | filt->str = fstr = strdup(*filter_inp); | |
2265 | if (!fstr) | |
2266 | return -ENOMEM; | |
2267 | ||
2268 | err = parse_num_or_str(&fstr, NULL, &filt->action, " "); | |
2269 | if (err) | |
2270 | goto out_err; | |
2271 | ||
2272 | err = parse_action(filt); | |
2273 | if (err) | |
2274 | goto out_err; | |
2275 | ||
2276 | err = parse_addr_size(&fstr, &filt->addr, &filt->sym_from, | |
2277 | &filt->sym_from_idx); | |
2278 | if (err) | |
2279 | goto out_err; | |
2280 | ||
2281 | fstr += strspn(fstr, " "); | |
2282 | ||
2283 | if (*fstr == '/') { | |
2284 | fstr += 1; | |
2285 | err = parse_addr_size(&fstr, &filt->size, &filt->sym_to, | |
2286 | &filt->sym_to_idx); | |
2287 | if (err) | |
2288 | goto out_err; | |
2289 | filt->range = true; | |
2290 | } | |
2291 | ||
2292 | fstr += strspn(fstr, " "); | |
2293 | ||
2294 | if (*fstr == '@') { | |
2295 | fstr += 1; | |
2296 | err = parse_num_or_str(&fstr, NULL, &filt->filename, " ,"); | |
2297 | if (err) | |
2298 | goto out_err; | |
2299 | } | |
2300 | ||
2301 | fstr += strspn(fstr, " ,"); | |
2302 | ||
2303 | *filter_inp += fstr - filt->str; | |
2304 | ||
2305 | return 0; | |
2306 | ||
2307 | out_err: | |
2308 | addr_filter__free_str(filt); | |
2309 | ||
2310 | return err; | |
2311 | } | |
2312 | ||
2313 | int addr_filters__parse_bare_filter(struct addr_filters *filts, | |
2314 | const char *filter) | |
2315 | { | |
2316 | struct addr_filter *filt; | |
2317 | const char *fstr = filter; | |
2318 | int err; | |
2319 | ||
2320 | while (*fstr) { | |
2321 | filt = addr_filter__new(); | |
2322 | err = parse_one_filter(filt, &fstr); | |
2323 | if (err) { | |
2324 | addr_filter__free(filt); | |
2325 | addr_filters__exit(filts); | |
2326 | return err; | |
2327 | } | |
2328 | addr_filters__add(filts, filt); | |
2329 | } | |
2330 | ||
2331 | return 0; | |
2332 | } | |
2333 | ||
2334 | struct sym_args { | |
2335 | const char *name; | |
2336 | u64 start; | |
2337 | u64 size; | |
2338 | int idx; | |
2339 | int cnt; | |
2340 | bool started; | |
2341 | bool global; | |
2342 | bool selected; | |
2343 | bool duplicate; | |
2344 | bool near; | |
2345 | }; | |
2346 | ||
cba04f31 AH |
2347 | static bool kern_sym_name_match(const char *kname, const char *name) |
2348 | { | |
2349 | size_t n = strlen(name); | |
2350 | ||
2351 | return !strcmp(kname, name) || | |
2352 | (!strncmp(kname, name, n) && kname[n] == '\t'); | |
2353 | } | |
2354 | ||
1b36c03e AH |
2355 | static bool kern_sym_match(struct sym_args *args, const char *name, char type) |
2356 | { | |
2357 | /* A function with the same name, and global or the n'th found or any */ | |
e85e0e0c | 2358 | return kallsyms__is_function(type) && |
cba04f31 | 2359 | kern_sym_name_match(name, args->name) && |
1b36c03e AH |
2360 | ((args->global && isupper(type)) || |
2361 | (args->selected && ++(args->cnt) == args->idx) || | |
2362 | (!args->global && !args->selected)); | |
2363 | } | |
2364 | ||
2365 | static int find_kern_sym_cb(void *arg, const char *name, char type, u64 start) | |
2366 | { | |
2367 | struct sym_args *args = arg; | |
2368 | ||
2369 | if (args->started) { | |
2370 | if (!args->size) | |
2371 | args->size = start - args->start; | |
2372 | if (args->selected) { | |
2373 | if (args->size) | |
2374 | return 1; | |
2375 | } else if (kern_sym_match(args, name, type)) { | |
2376 | args->duplicate = true; | |
2377 | return 1; | |
2378 | } | |
2379 | } else if (kern_sym_match(args, name, type)) { | |
2380 | args->started = true; | |
2381 | args->start = start; | |
2382 | } | |
2383 | ||
2384 | return 0; | |
2385 | } | |
2386 | ||
2387 | static int print_kern_sym_cb(void *arg, const char *name, char type, u64 start) | |
2388 | { | |
2389 | struct sym_args *args = arg; | |
2390 | ||
2391 | if (kern_sym_match(args, name, type)) { | |
2392 | pr_err("#%d\t0x%"PRIx64"\t%c\t%s\n", | |
2393 | ++args->cnt, start, type, name); | |
2394 | args->near = true; | |
2395 | } else if (args->near) { | |
2396 | args->near = false; | |
2397 | pr_err("\t\twhich is near\t\t%s\n", name); | |
2398 | } | |
2399 | ||
2400 | return 0; | |
2401 | } | |
2402 | ||
2403 | static int sym_not_found_error(const char *sym_name, int idx) | |
2404 | { | |
2405 | if (idx > 0) { | |
2406 | pr_err("N'th occurrence (N=%d) of symbol '%s' not found.\n", | |
2407 | idx, sym_name); | |
2408 | } else if (!idx) { | |
2409 | pr_err("Global symbol '%s' not found.\n", sym_name); | |
2410 | } else { | |
2411 | pr_err("Symbol '%s' not found.\n", sym_name); | |
2412 | } | |
2413 | pr_err("Note that symbols must be functions.\n"); | |
2414 | ||
2415 | return -EINVAL; | |
2416 | } | |
2417 | ||
2418 | static int find_kern_sym(const char *sym_name, u64 *start, u64 *size, int idx) | |
2419 | { | |
2420 | struct sym_args args = { | |
2421 | .name = sym_name, | |
2422 | .idx = idx, | |
2423 | .global = !idx, | |
2424 | .selected = idx > 0, | |
2425 | }; | |
2426 | int err; | |
2427 | ||
2428 | *start = 0; | |
2429 | *size = 0; | |
2430 | ||
2431 | err = kallsyms__parse("/proc/kallsyms", &args, find_kern_sym_cb); | |
2432 | if (err < 0) { | |
2433 | pr_err("Failed to parse /proc/kallsyms\n"); | |
2434 | return err; | |
2435 | } | |
2436 | ||
2437 | if (args.duplicate) { | |
2438 | pr_err("Multiple kernel symbols with name '%s'\n", sym_name); | |
2439 | args.cnt = 0; | |
2440 | kallsyms__parse("/proc/kallsyms", &args, print_kern_sym_cb); | |
2441 | pr_err("Disambiguate symbol name by inserting #n after the name e.g. %s #2\n", | |
2442 | sym_name); | |
2443 | pr_err("Or select a global symbol by inserting #0 or #g or #G\n"); | |
2444 | return -EINVAL; | |
2445 | } | |
2446 | ||
2447 | if (!args.started) { | |
2448 | pr_err("Kernel symbol lookup: "); | |
2449 | return sym_not_found_error(sym_name, idx); | |
2450 | } | |
2451 | ||
2452 | *start = args.start; | |
2453 | *size = args.size; | |
2454 | ||
2455 | return 0; | |
2456 | } | |
2457 | ||
2458 | static int find_entire_kern_cb(void *arg, const char *name __maybe_unused, | |
2459 | char type, u64 start) | |
2460 | { | |
2461 | struct sym_args *args = arg; | |
1f9f33cc | 2462 | u64 size; |
1b36c03e | 2463 | |
e85e0e0c | 2464 | if (!kallsyms__is_function(type)) |
1b36c03e AH |
2465 | return 0; |
2466 | ||
2467 | if (!args->started) { | |
2468 | args->started = true; | |
2469 | args->start = start; | |
2470 | } | |
2471 | /* Don't know exactly where the kernel ends, so we add a page */ | |
1f9f33cc AH |
2472 | size = round_up(start, page_size) + page_size - args->start; |
2473 | if (size > args->size) | |
2474 | args->size = size; | |
1b36c03e AH |
2475 | |
2476 | return 0; | |
2477 | } | |
2478 | ||
2479 | static int addr_filter__entire_kernel(struct addr_filter *filt) | |
2480 | { | |
2481 | struct sym_args args = { .started = false }; | |
2482 | int err; | |
2483 | ||
2484 | err = kallsyms__parse("/proc/kallsyms", &args, find_entire_kern_cb); | |
2485 | if (err < 0 || !args.started) { | |
2486 | pr_err("Failed to parse /proc/kallsyms\n"); | |
2487 | return err; | |
2488 | } | |
2489 | ||
2490 | filt->addr = args.start; | |
2491 | filt->size = args.size; | |
2492 | ||
2493 | return 0; | |
2494 | } | |
2495 | ||
2496 | static int check_end_after_start(struct addr_filter *filt, u64 start, u64 size) | |
2497 | { | |
2498 | if (start + size >= filt->addr) | |
2499 | return 0; | |
2500 | ||
2501 | if (filt->sym_from) { | |
2502 | pr_err("Symbol '%s' (0x%"PRIx64") comes before '%s' (0x%"PRIx64")\n", | |
2503 | filt->sym_to, start, filt->sym_from, filt->addr); | |
2504 | } else { | |
2505 | pr_err("Symbol '%s' (0x%"PRIx64") comes before address 0x%"PRIx64")\n", | |
2506 | filt->sym_to, start, filt->addr); | |
2507 | } | |
2508 | ||
2509 | return -EINVAL; | |
2510 | } | |
2511 | ||
2512 | static int addr_filter__resolve_kernel_syms(struct addr_filter *filt) | |
2513 | { | |
2514 | bool no_size = false; | |
2515 | u64 start, size; | |
2516 | int err; | |
2517 | ||
2518 | if (symbol_conf.kptr_restrict) { | |
2519 | pr_err("Kernel addresses are restricted. Unable to resolve kernel symbols.\n"); | |
2520 | return -EINVAL; | |
2521 | } | |
2522 | ||
2523 | if (filt->sym_from && !strcmp(filt->sym_from, "*")) | |
2524 | return addr_filter__entire_kernel(filt); | |
2525 | ||
2526 | if (filt->sym_from) { | |
2527 | err = find_kern_sym(filt->sym_from, &start, &size, | |
2528 | filt->sym_from_idx); | |
2529 | if (err) | |
2530 | return err; | |
2531 | filt->addr = start; | |
2532 | if (filt->range && !filt->size && !filt->sym_to) { | |
2533 | filt->size = size; | |
c3a0bbc7 | 2534 | no_size = !size; |
1b36c03e AH |
2535 | } |
2536 | } | |
2537 | ||
2538 | if (filt->sym_to) { | |
2539 | err = find_kern_sym(filt->sym_to, &start, &size, | |
2540 | filt->sym_to_idx); | |
2541 | if (err) | |
2542 | return err; | |
2543 | ||
2544 | err = check_end_after_start(filt, start, size); | |
2545 | if (err) | |
2546 | return err; | |
2547 | filt->size = start + size - filt->addr; | |
c3a0bbc7 | 2548 | no_size = !size; |
1b36c03e AH |
2549 | } |
2550 | ||
2551 | /* The very last symbol in kallsyms does not imply a particular size */ | |
2552 | if (no_size) { | |
2553 | pr_err("Cannot determine size of symbol '%s'\n", | |
2554 | filt->sym_to ? filt->sym_to : filt->sym_from); | |
2555 | return -EINVAL; | |
2556 | } | |
2557 | ||
2558 | return 0; | |
2559 | } | |
2560 | ||
2561 | static struct dso *load_dso(const char *name) | |
2562 | { | |
2563 | struct map *map; | |
2564 | struct dso *dso; | |
2565 | ||
2566 | map = dso__new_map(name); | |
2567 | if (!map) | |
2568 | return NULL; | |
2569 | ||
c1c49204 AH |
2570 | if (map__load(map) < 0) |
2571 | pr_err("File '%s' not found or has no symbols.\n", name); | |
1b36c03e | 2572 | |
63df0e4b | 2573 | dso = dso__get(map__dso(map)); |
1b36c03e AH |
2574 | |
2575 | map__put(map); | |
2576 | ||
2577 | return dso; | |
2578 | } | |
2579 | ||
2580 | static bool dso_sym_match(struct symbol *sym, const char *name, int *cnt, | |
2581 | int idx) | |
2582 | { | |
2583 | /* Same name, and global or the n'th found or any */ | |
2584 | return !arch__compare_symbol_names(name, sym->name) && | |
2585 | ((!idx && sym->binding == STB_GLOBAL) || | |
2586 | (idx > 0 && ++*cnt == idx) || | |
2587 | idx < 0); | |
2588 | } | |
2589 | ||
2590 | static void print_duplicate_syms(struct dso *dso, const char *sym_name) | |
2591 | { | |
2592 | struct symbol *sym; | |
2593 | bool near = false; | |
2594 | int cnt = 0; | |
2595 | ||
2596 | pr_err("Multiple symbols with name '%s'\n", sym_name); | |
2597 | ||
5cf88a63 | 2598 | sym = dso__first_symbol(dso); |
1b36c03e AH |
2599 | while (sym) { |
2600 | if (dso_sym_match(sym, sym_name, &cnt, -1)) { | |
2601 | pr_err("#%d\t0x%"PRIx64"\t%c\t%s\n", | |
2602 | ++cnt, sym->start, | |
2603 | sym->binding == STB_GLOBAL ? 'g' : | |
2604 | sym->binding == STB_LOCAL ? 'l' : 'w', | |
2605 | sym->name); | |
2606 | near = true; | |
2607 | } else if (near) { | |
2608 | near = false; | |
2609 | pr_err("\t\twhich is near\t\t%s\n", sym->name); | |
2610 | } | |
2611 | sym = dso__next_symbol(sym); | |
2612 | } | |
2613 | ||
2614 | pr_err("Disambiguate symbol name by inserting #n after the name e.g. %s #2\n", | |
2615 | sym_name); | |
2616 | pr_err("Or select a global symbol by inserting #0 or #g or #G\n"); | |
2617 | } | |
2618 | ||
2619 | static int find_dso_sym(struct dso *dso, const char *sym_name, u64 *start, | |
2620 | u64 *size, int idx) | |
2621 | { | |
2622 | struct symbol *sym; | |
2623 | int cnt = 0; | |
2624 | ||
2625 | *start = 0; | |
2626 | *size = 0; | |
2627 | ||
5cf88a63 | 2628 | sym = dso__first_symbol(dso); |
1b36c03e AH |
2629 | while (sym) { |
2630 | if (*start) { | |
2631 | if (!*size) | |
2632 | *size = sym->start - *start; | |
2633 | if (idx > 0) { | |
2634 | if (*size) | |
cf129830 | 2635 | return 0; |
1b36c03e AH |
2636 | } else if (dso_sym_match(sym, sym_name, &cnt, idx)) { |
2637 | print_duplicate_syms(dso, sym_name); | |
2638 | return -EINVAL; | |
2639 | } | |
2640 | } else if (dso_sym_match(sym, sym_name, &cnt, idx)) { | |
2641 | *start = sym->start; | |
2642 | *size = sym->end - sym->start; | |
2643 | } | |
2644 | sym = dso__next_symbol(sym); | |
2645 | } | |
2646 | ||
2647 | if (!*start) | |
2648 | return sym_not_found_error(sym_name, idx); | |
2649 | ||
2650 | return 0; | |
2651 | } | |
2652 | ||
2653 | static int addr_filter__entire_dso(struct addr_filter *filt, struct dso *dso) | |
2654 | { | |
57176601 AH |
2655 | if (dso__data_file_size(dso, NULL)) { |
2656 | pr_err("Failed to determine filter for %s\nCannot determine file size.\n", | |
1b36c03e AH |
2657 | filt->filename); |
2658 | return -EINVAL; | |
2659 | } | |
2660 | ||
57176601 | 2661 | filt->addr = 0; |
ee756ef7 | 2662 | filt->size = dso__data(dso)->file_size; |
1b36c03e AH |
2663 | |
2664 | return 0; | |
2665 | } | |
2666 | ||
2667 | static int addr_filter__resolve_syms(struct addr_filter *filt) | |
2668 | { | |
2669 | u64 start, size; | |
2670 | struct dso *dso; | |
2671 | int err = 0; | |
2672 | ||
2673 | if (!filt->sym_from && !filt->sym_to) | |
2674 | return 0; | |
2675 | ||
2676 | if (!filt->filename) | |
2677 | return addr_filter__resolve_kernel_syms(filt); | |
2678 | ||
2679 | dso = load_dso(filt->filename); | |
2680 | if (!dso) { | |
2681 | pr_err("Failed to load symbols from: %s\n", filt->filename); | |
2682 | return -EINVAL; | |
2683 | } | |
2684 | ||
2685 | if (filt->sym_from && !strcmp(filt->sym_from, "*")) { | |
2686 | err = addr_filter__entire_dso(filt, dso); | |
2687 | goto put_dso; | |
2688 | } | |
2689 | ||
2690 | if (filt->sym_from) { | |
2691 | err = find_dso_sym(dso, filt->sym_from, &start, &size, | |
2692 | filt->sym_from_idx); | |
2693 | if (err) | |
2694 | goto put_dso; | |
2695 | filt->addr = start; | |
2696 | if (filt->range && !filt->size && !filt->sym_to) | |
2697 | filt->size = size; | |
2698 | } | |
2699 | ||
2700 | if (filt->sym_to) { | |
2701 | err = find_dso_sym(dso, filt->sym_to, &start, &size, | |
2702 | filt->sym_to_idx); | |
2703 | if (err) | |
2704 | goto put_dso; | |
2705 | ||
2706 | err = check_end_after_start(filt, start, size); | |
2707 | if (err) | |
2708 | return err; | |
2709 | ||
2710 | filt->size = start + size - filt->addr; | |
2711 | } | |
2712 | ||
2713 | put_dso: | |
2714 | dso__put(dso); | |
2715 | ||
2716 | return err; | |
2717 | } | |
2718 | ||
2719 | static char *addr_filter__to_str(struct addr_filter *filt) | |
2720 | { | |
2721 | char filename_buf[PATH_MAX]; | |
2722 | const char *at = ""; | |
2723 | const char *fn = ""; | |
2724 | char *filter; | |
2725 | int err; | |
2726 | ||
2727 | if (filt->filename) { | |
2728 | at = "@"; | |
2729 | fn = realpath(filt->filename, filename_buf); | |
2730 | if (!fn) | |
2731 | return NULL; | |
2732 | } | |
2733 | ||
2734 | if (filt->range) { | |
2735 | err = asprintf(&filter, "%s 0x%"PRIx64"/0x%"PRIx64"%s%s", | |
2736 | filt->action, filt->addr, filt->size, at, fn); | |
2737 | } else { | |
2738 | err = asprintf(&filter, "%s 0x%"PRIx64"%s%s", | |
2739 | filt->action, filt->addr, at, fn); | |
2740 | } | |
2741 | ||
2742 | return err < 0 ? NULL : filter; | |
2743 | } | |
2744 | ||
32dcd021 | 2745 | static int parse_addr_filter(struct evsel *evsel, const char *filter, |
1b36c03e AH |
2746 | int max_nr) |
2747 | { | |
2748 | struct addr_filters filts; | |
2749 | struct addr_filter *filt; | |
2750 | int err; | |
2751 | ||
2752 | addr_filters__init(&filts); | |
2753 | ||
2754 | err = addr_filters__parse_bare_filter(&filts, filter); | |
2755 | if (err) | |
2756 | goto out_exit; | |
2757 | ||
2758 | if (filts.cnt > max_nr) { | |
2759 | pr_err("Error: number of address filters (%d) exceeds maximum (%d)\n", | |
2760 | filts.cnt, max_nr); | |
2761 | err = -EINVAL; | |
2762 | goto out_exit; | |
2763 | } | |
2764 | ||
2765 | list_for_each_entry(filt, &filts.head, list) { | |
2766 | char *new_filter; | |
2767 | ||
2768 | err = addr_filter__resolve_syms(filt); | |
2769 | if (err) | |
2770 | goto out_exit; | |
2771 | ||
2772 | new_filter = addr_filter__to_str(filt); | |
2773 | if (!new_filter) { | |
2774 | err = -ENOMEM; | |
2775 | goto out_exit; | |
2776 | } | |
2777 | ||
ad681adf | 2778 | if (evsel__append_addr_filter(evsel, new_filter)) { |
1b36c03e AH |
2779 | err = -ENOMEM; |
2780 | goto out_exit; | |
2781 | } | |
2782 | } | |
2783 | ||
2784 | out_exit: | |
2785 | addr_filters__exit(&filts); | |
2786 | ||
2787 | if (err) { | |
2788 | pr_err("Failed to parse address filter: '%s'\n", filter); | |
2789 | pr_err("Filter format is: filter|start|stop|tracestop <start symbol or address> [/ <end symbol or size>] [@<file name>]\n"); | |
2790 | pr_err("Where multiple filters are separated by space or comma.\n"); | |
2791 | } | |
2792 | ||
2793 | return err; | |
2794 | } | |
2795 | ||
ad681adf | 2796 | static int evsel__nr_addr_filter(struct evsel *evsel) |
1b36c03e | 2797 | { |
e76026bd | 2798 | struct perf_pmu *pmu = evsel__find_pmu(evsel); |
1b36c03e AH |
2799 | int nr_addr_filters = 0; |
2800 | ||
2801 | if (!pmu) | |
2802 | return 0; | |
2803 | ||
2804 | perf_pmu__scan_file(pmu, "nr_addr_filters", "%d", &nr_addr_filters); | |
2805 | ||
2806 | return nr_addr_filters; | |
2807 | } | |
2808 | ||
63503dba | 2809 | int auxtrace_parse_filters(struct evlist *evlist) |
1b36c03e | 2810 | { |
32dcd021 | 2811 | struct evsel *evsel; |
1b36c03e AH |
2812 | char *filter; |
2813 | int err, max_nr; | |
2814 | ||
2815 | evlist__for_each_entry(evlist, evsel) { | |
2816 | filter = evsel->filter; | |
ad681adf | 2817 | max_nr = evsel__nr_addr_filter(evsel); |
1b36c03e AH |
2818 | if (!filter || !max_nr) |
2819 | continue; | |
2820 | evsel->filter = NULL; | |
2821 | err = parse_addr_filter(evsel, filter, max_nr); | |
2822 | free(filter); | |
2823 | if (err) | |
2824 | return err; | |
2825 | pr_debug("Address filter: %s\n", evsel->filter); | |
2826 | } | |
2827 | ||
2828 | return 0; | |
2829 | } | |
f2a39fe8 ACM |
2830 | |
2831 | int auxtrace__process_event(struct perf_session *session, union perf_event *event, | |
2832 | struct perf_sample *sample, struct perf_tool *tool) | |
2833 | { | |
2834 | if (!session->auxtrace) | |
2835 | return 0; | |
2836 | ||
2837 | return session->auxtrace->process_event(session, event, sample, tool); | |
2838 | } | |
2839 | ||
b04b8dd1 AH |
2840 | void auxtrace__dump_auxtrace_sample(struct perf_session *session, |
2841 | struct perf_sample *sample) | |
2842 | { | |
2843 | if (!session->auxtrace || !session->auxtrace->dump_auxtrace_sample || | |
2844 | auxtrace__dont_decode(session)) | |
2845 | return; | |
2846 | ||
2847 | session->auxtrace->dump_auxtrace_sample(session, sample); | |
2848 | } | |
2849 | ||
f2a39fe8 ACM |
2850 | int auxtrace__flush_events(struct perf_session *session, struct perf_tool *tool) |
2851 | { | |
2852 | if (!session->auxtrace) | |
2853 | return 0; | |
2854 | ||
2855 | return session->auxtrace->flush_events(session, tool); | |
2856 | } | |
2857 | ||
2858 | void auxtrace__free_events(struct perf_session *session) | |
2859 | { | |
2860 | if (!session->auxtrace) | |
2861 | return; | |
2862 | ||
2863 | return session->auxtrace->free_events(session); | |
2864 | } | |
2865 | ||
2866 | void auxtrace__free(struct perf_session *session) | |
2867 | { | |
2868 | if (!session->auxtrace) | |
2869 | return; | |
2870 | ||
2871 | return session->auxtrace->free(session); | |
2872 | } | |
853f37d7 AH |
2873 | |
2874 | bool auxtrace__evsel_is_auxtrace(struct perf_session *session, | |
2875 | struct evsel *evsel) | |
2876 | { | |
2877 | if (!session->auxtrace || !session->auxtrace->evsel_is_auxtrace) | |
2878 | return false; | |
2879 | ||
2880 | return session->auxtrace->evsel_is_auxtrace(session, evsel); | |
2881 | } |