1 /* 2 * auxtrace.h: AUX area trace support 3 * Copyright (c) 2013-2015, Intel Corporation. 4 * 5 * This program is free software; you can redistribute it and/or modify it 6 * under the terms and conditions of the GNU General Public License, 7 * version 2, as published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 12 * more details. 13 * 14 */ 15 16 #ifndef __PERF_AUXTRACE_H 17 #define __PERF_AUXTRACE_H 18 19 #include <sys/types.h> 20 #include <errno.h> 21 #include <stdbool.h> 22 #include <stddef.h> 23 #include <linux/list.h> 24 #include <linux/perf_event.h> 25 #include <linux/types.h> 26 27 #include "../perf.h" 28 #include "event.h" 29 #include "session.h" 30 #include "debug.h" 31 32 union perf_event; 33 struct perf_session; 34 struct perf_evlist; 35 struct perf_tool; 36 struct option; 37 struct record_opts; 38 struct auxtrace_info_event; 39 struct events_stats; 40 41 enum auxtrace_type { 42 PERF_AUXTRACE_UNKNOWN, 43 PERF_AUXTRACE_INTEL_PT, 44 PERF_AUXTRACE_INTEL_BTS, 45 PERF_AUXTRACE_CS_ETM, 46 PERF_AUXTRACE_ARM_SPE, 47 PERF_AUXTRACE_S390_CPUMSF, 48 }; 49 50 enum itrace_period_type { 51 PERF_ITRACE_PERIOD_INSTRUCTIONS, 52 PERF_ITRACE_PERIOD_TICKS, 53 PERF_ITRACE_PERIOD_NANOSECS, 54 }; 55 56 /** 57 * struct itrace_synth_opts - AUX area tracing synthesis options. 58 * @set: indicates whether or not options have been set 59 * @inject: indicates the event (not just the sample) must be fully synthesized 60 * because 'perf inject' will write it out 61 * @instructions: whether to synthesize 'instructions' events 62 * @branches: whether to synthesize 'branches' events 63 * @transactions: whether to synthesize events for transactions 64 * @ptwrites: whether to synthesize events for ptwrites 65 * @pwr_events: whether to synthesize power events 66 * @errors: whether to synthesize decoder error events 67 * @dont_decode: whether to skip decoding entirely 68 * @log: write a decoding log 69 * @calls: limit branch samples to calls (can be combined with @returns) 70 * @returns: limit branch samples to returns (can be combined with @calls) 71 * @callchain: add callchain to 'instructions' events 72 * @thread_stack: feed branches to the thread_stack 73 * @last_branch: add branch context to 'instruction' events 74 * @callchain_sz: maximum callchain size 75 * @last_branch_sz: branch context size 76 * @period: 'instructions' events period 77 * @period_type: 'instructions' events period type 78 * @initial_skip: skip N events at the beginning. 79 * @cpu_bitmap: CPUs for which to synthesize events, or NULL for all 80 */ 81 struct itrace_synth_opts { 82 bool set; 83 bool inject; 84 bool instructions; 85 bool branches; 86 bool transactions; 87 bool ptwrites; 88 bool pwr_events; 89 bool errors; 90 bool dont_decode; 91 bool log; 92 bool calls; 93 bool returns; 94 bool callchain; 95 bool thread_stack; 96 bool last_branch; 97 unsigned int callchain_sz; 98 unsigned int last_branch_sz; 99 unsigned long long period; 100 enum itrace_period_type period_type; 101 unsigned long initial_skip; 102 unsigned long *cpu_bitmap; 103 }; 104 105 /** 106 * struct auxtrace_index_entry - indexes a AUX area tracing event within a 107 * perf.data file. 108 * @file_offset: offset within the perf.data file 109 * @sz: size of the event 110 */ 111 struct auxtrace_index_entry { 112 u64 file_offset; 113 u64 sz; 114 }; 115 116 #define PERF_AUXTRACE_INDEX_ENTRY_COUNT 256 117 118 /** 119 * struct auxtrace_index - index of AUX area tracing events within a perf.data 120 * file. 121 * @list: linking a number of arrays of entries 122 * @nr: number of entries 123 * @entries: array of entries 124 */ 125 struct auxtrace_index { 126 struct list_head list; 127 size_t nr; 128 struct auxtrace_index_entry entries[PERF_AUXTRACE_INDEX_ENTRY_COUNT]; 129 }; 130 131 /** 132 * struct auxtrace - session callbacks to allow AUX area data decoding. 133 * @process_event: lets the decoder see all session events 134 * @process_auxtrace_event: process a PERF_RECORD_AUXTRACE event 135 * @flush_events: process any remaining data 136 * @free_events: free resources associated with event processing 137 * @free: free resources associated with the session 138 */ 139 struct auxtrace { 140 int (*process_event)(struct perf_session *session, 141 union perf_event *event, 142 struct perf_sample *sample, 143 struct perf_tool *tool); 144 int (*process_auxtrace_event)(struct perf_session *session, 145 union perf_event *event, 146 struct perf_tool *tool); 147 int (*flush_events)(struct perf_session *session, 148 struct perf_tool *tool); 149 void (*free_events)(struct perf_session *session); 150 void (*free)(struct perf_session *session); 151 }; 152 153 /** 154 * struct auxtrace_buffer - a buffer containing AUX area tracing data. 155 * @list: buffers are queued in a list held by struct auxtrace_queue 156 * @size: size of the buffer in bytes 157 * @pid: in per-thread mode, the pid this buffer is associated with 158 * @tid: in per-thread mode, the tid this buffer is associated with 159 * @cpu: in per-cpu mode, the cpu this buffer is associated with 160 * @data: actual buffer data (can be null if the data has not been loaded) 161 * @data_offset: file offset at which the buffer can be read 162 * @mmap_addr: mmap address at which the buffer can be read 163 * @mmap_size: size of the mmap at @mmap_addr 164 * @data_needs_freeing: @data was malloc'd so free it when it is no longer 165 * needed 166 * @consecutive: the original data was split up and this buffer is consecutive 167 * to the previous buffer 168 * @offset: offset as determined by aux_head / aux_tail members of struct 169 * perf_event_mmap_page 170 * @reference: an implementation-specific reference determined when the data is 171 * recorded 172 * @buffer_nr: used to number each buffer 173 * @use_size: implementation actually only uses this number of bytes 174 * @use_data: implementation actually only uses data starting at this address 175 */ 176 struct auxtrace_buffer { 177 struct list_head list; 178 size_t size; 179 pid_t pid; 180 pid_t tid; 181 int cpu; 182 void *data; 183 off_t data_offset; 184 void *mmap_addr; 185 size_t mmap_size; 186 bool data_needs_freeing; 187 bool consecutive; 188 u64 offset; 189 u64 reference; 190 u64 buffer_nr; 191 size_t use_size; 192 void *use_data; 193 }; 194 195 /** 196 * struct auxtrace_queue - a queue of AUX area tracing data buffers. 197 * @head: head of buffer list 198 * @tid: in per-thread mode, the tid this queue is associated with 199 * @cpu: in per-cpu mode, the cpu this queue is associated with 200 * @set: %true once this queue has been dedicated to a specific thread or cpu 201 * @priv: implementation-specific data 202 */ 203 struct auxtrace_queue { 204 struct list_head head; 205 pid_t tid; 206 int cpu; 207 bool set; 208 void *priv; 209 }; 210 211 /** 212 * struct auxtrace_queues - an array of AUX area tracing queues. 213 * @queue_array: array of queues 214 * @nr_queues: number of queues 215 * @new_data: set whenever new data is queued 216 * @populated: queues have been fully populated using the auxtrace_index 217 * @next_buffer_nr: used to number each buffer 218 */ 219 struct auxtrace_queues { 220 struct auxtrace_queue *queue_array; 221 unsigned int nr_queues; 222 bool new_data; 223 bool populated; 224 u64 next_buffer_nr; 225 }; 226 227 /** 228 * struct auxtrace_heap_item - element of struct auxtrace_heap. 229 * @queue_nr: queue number 230 * @ordinal: value used for sorting (lowest ordinal is top of the heap) expected 231 * to be a timestamp 232 */ 233 struct auxtrace_heap_item { 234 unsigned int queue_nr; 235 u64 ordinal; 236 }; 237 238 /** 239 * struct auxtrace_heap - a heap suitable for sorting AUX area tracing queues. 240 * @heap_array: the heap 241 * @heap_cnt: the number of elements in the heap 242 * @heap_sz: maximum number of elements (grows as needed) 243 */ 244 struct auxtrace_heap { 245 struct auxtrace_heap_item *heap_array; 246 unsigned int heap_cnt; 247 unsigned int heap_sz; 248 }; 249 250 /** 251 * struct auxtrace_mmap - records an mmap of the auxtrace buffer. 252 * @base: address of mapped area 253 * @userpg: pointer to buffer's perf_event_mmap_page 254 * @mask: %0 if @len is not a power of two, otherwise (@len - %1) 255 * @len: size of mapped area 256 * @prev: previous aux_head 257 * @idx: index of this mmap 258 * @tid: tid for a per-thread mmap (also set if there is only 1 tid on a per-cpu 259 * mmap) otherwise %0 260 * @cpu: cpu number for a per-cpu mmap otherwise %-1 261 */ 262 struct auxtrace_mmap { 263 void *base; 264 void *userpg; 265 size_t mask; 266 size_t len; 267 u64 prev; 268 int idx; 269 pid_t tid; 270 int cpu; 271 }; 272 273 /** 274 * struct auxtrace_mmap_params - parameters to set up struct auxtrace_mmap. 275 * @mask: %0 if @len is not a power of two, otherwise (@len - %1) 276 * @offset: file offset of mapped area 277 * @len: size of mapped area 278 * @prot: mmap memory protection 279 * @idx: index of this mmap 280 * @tid: tid for a per-thread mmap (also set if there is only 1 tid on a per-cpu 281 * mmap) otherwise %0 282 * @cpu: cpu number for a per-cpu mmap otherwise %-1 283 */ 284 struct auxtrace_mmap_params { 285 size_t mask; 286 off_t offset; 287 size_t len; 288 int prot; 289 int idx; 290 pid_t tid; 291 int cpu; 292 }; 293 294 /** 295 * struct auxtrace_record - callbacks for recording AUX area data. 296 * @recording_options: validate and process recording options 297 * @info_priv_size: return the size of the private data in auxtrace_info_event 298 * @info_fill: fill-in the private data in auxtrace_info_event 299 * @free: free this auxtrace record structure 300 * @snapshot_start: starting a snapshot 301 * @snapshot_finish: finishing a snapshot 302 * @find_snapshot: find data to snapshot within auxtrace mmap 303 * @parse_snapshot_options: parse snapshot options 304 * @reference: provide a 64-bit reference number for auxtrace_event 305 * @read_finish: called after reading from an auxtrace mmap 306 * @alignment: alignment (if any) for AUX area data 307 */ 308 struct auxtrace_record { 309 int (*recording_options)(struct auxtrace_record *itr, 310 struct perf_evlist *evlist, 311 struct record_opts *opts); 312 size_t (*info_priv_size)(struct auxtrace_record *itr, 313 struct perf_evlist *evlist); 314 int (*info_fill)(struct auxtrace_record *itr, 315 struct perf_session *session, 316 struct auxtrace_info_event *auxtrace_info, 317 size_t priv_size); 318 void (*free)(struct auxtrace_record *itr); 319 int (*snapshot_start)(struct auxtrace_record *itr); 320 int (*snapshot_finish)(struct auxtrace_record *itr); 321 int (*find_snapshot)(struct auxtrace_record *itr, int idx, 322 struct auxtrace_mmap *mm, unsigned char *data, 323 u64 *head, u64 *old); 324 int (*parse_snapshot_options)(struct auxtrace_record *itr, 325 struct record_opts *opts, 326 const char *str); 327 u64 (*reference)(struct auxtrace_record *itr); 328 int (*read_finish)(struct auxtrace_record *itr, int idx); 329 unsigned int alignment; 330 }; 331 332 /** 333 * struct addr_filter - address filter. 334 * @list: list node 335 * @range: true if it is a range filter 336 * @start: true if action is 'filter' or 'start' 337 * @action: 'filter', 'start' or 'stop' ('tracestop' is accepted but converted 338 * to 'stop') 339 * @sym_from: symbol name for the filter address 340 * @sym_to: symbol name that determines the filter size 341 * @sym_from_idx: selects n'th from symbols with the same name (0 means global 342 * and less than 0 means symbol must be unique) 343 * @sym_to_idx: same as @sym_from_idx but for @sym_to 344 * @addr: filter address 345 * @size: filter region size (for range filters) 346 * @filename: DSO file name or NULL for the kernel 347 * @str: allocated string that contains the other string members 348 */ 349 struct addr_filter { 350 struct list_head list; 351 bool range; 352 bool start; 353 const char *action; 354 const char *sym_from; 355 const char *sym_to; 356 int sym_from_idx; 357 int sym_to_idx; 358 u64 addr; 359 u64 size; 360 const char *filename; 361 char *str; 362 }; 363 364 /** 365 * struct addr_filters - list of address filters. 366 * @head: list of address filters 367 * @cnt: number of address filters 368 */ 369 struct addr_filters { 370 struct list_head head; 371 int cnt; 372 }; 373 374 #ifdef HAVE_AUXTRACE_SUPPORT 375 376 /* 377 * In snapshot mode the mmapped page is read-only which makes using 378 * __sync_val_compare_and_swap() problematic. However, snapshot mode expects 379 * the buffer is not updated while the snapshot is made (e.g. Intel PT disables 380 * the event) so there is not a race anyway. 381 */ 382 static inline u64 auxtrace_mmap__read_snapshot_head(struct auxtrace_mmap *mm) 383 { 384 struct perf_event_mmap_page *pc = mm->userpg; 385 u64 head = READ_ONCE(pc->aux_head); 386 387 /* Ensure all reads are done after we read the head */ 388 rmb(); 389 return head; 390 } 391 392 static inline u64 auxtrace_mmap__read_head(struct auxtrace_mmap *mm) 393 { 394 struct perf_event_mmap_page *pc = mm->userpg; 395 #if BITS_PER_LONG == 64 || !defined(HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT) 396 u64 head = READ_ONCE(pc->aux_head); 397 #else 398 u64 head = __sync_val_compare_and_swap(&pc->aux_head, 0, 0); 399 #endif 400 401 /* Ensure all reads are done after we read the head */ 402 rmb(); 403 return head; 404 } 405 406 static inline void auxtrace_mmap__write_tail(struct auxtrace_mmap *mm, u64 tail) 407 { 408 struct perf_event_mmap_page *pc = mm->userpg; 409 #if BITS_PER_LONG != 64 && defined(HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT) 410 u64 old_tail; 411 #endif 412 413 /* Ensure all reads are done before we write the tail out */ 414 mb(); 415 #if BITS_PER_LONG == 64 || !defined(HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT) 416 pc->aux_tail = tail; 417 #else 418 do { 419 old_tail = __sync_val_compare_and_swap(&pc->aux_tail, 0, 0); 420 } while (!__sync_bool_compare_and_swap(&pc->aux_tail, old_tail, tail)); 421 #endif 422 } 423 424 int auxtrace_mmap__mmap(struct auxtrace_mmap *mm, 425 struct auxtrace_mmap_params *mp, 426 void *userpg, int fd); 427 void auxtrace_mmap__munmap(struct auxtrace_mmap *mm); 428 void auxtrace_mmap_params__init(struct auxtrace_mmap_params *mp, 429 off_t auxtrace_offset, 430 unsigned int auxtrace_pages, 431 bool auxtrace_overwrite); 432 void auxtrace_mmap_params__set_idx(struct auxtrace_mmap_params *mp, 433 struct perf_evlist *evlist, int idx, 434 bool per_cpu); 435 436 typedef int (*process_auxtrace_t)(struct perf_tool *tool, 437 union perf_event *event, void *data1, 438 size_t len1, void *data2, size_t len2); 439 440 int auxtrace_mmap__read(struct auxtrace_mmap *mm, struct auxtrace_record *itr, 441 struct perf_tool *tool, process_auxtrace_t fn); 442 443 int auxtrace_mmap__read_snapshot(struct auxtrace_mmap *mm, 444 struct auxtrace_record *itr, 445 struct perf_tool *tool, process_auxtrace_t fn, 446 size_t snapshot_size); 447 448 int auxtrace_queues__init(struct auxtrace_queues *queues); 449 int auxtrace_queues__add_event(struct auxtrace_queues *queues, 450 struct perf_session *session, 451 union perf_event *event, off_t data_offset, 452 struct auxtrace_buffer **buffer_ptr); 453 void auxtrace_queues__free(struct auxtrace_queues *queues); 454 int auxtrace_queues__process_index(struct auxtrace_queues *queues, 455 struct perf_session *session); 456 struct auxtrace_buffer *auxtrace_buffer__next(struct auxtrace_queue *queue, 457 struct auxtrace_buffer *buffer); 458 void *auxtrace_buffer__get_data(struct auxtrace_buffer *buffer, int fd); 459 void auxtrace_buffer__put_data(struct auxtrace_buffer *buffer); 460 void auxtrace_buffer__drop_data(struct auxtrace_buffer *buffer); 461 void auxtrace_buffer__free(struct auxtrace_buffer *buffer); 462 463 int auxtrace_heap__add(struct auxtrace_heap *heap, unsigned int queue_nr, 464 u64 ordinal); 465 void auxtrace_heap__pop(struct auxtrace_heap *heap); 466 void auxtrace_heap__free(struct auxtrace_heap *heap); 467 468 struct auxtrace_cache_entry { 469 struct hlist_node hash; 470 u32 key; 471 }; 472 473 struct auxtrace_cache *auxtrace_cache__new(unsigned int bits, size_t entry_size, 474 unsigned int limit_percent); 475 void auxtrace_cache__free(struct auxtrace_cache *auxtrace_cache); 476 void *auxtrace_cache__alloc_entry(struct auxtrace_cache *c); 477 void auxtrace_cache__free_entry(struct auxtrace_cache *c, void *entry); 478 int auxtrace_cache__add(struct auxtrace_cache *c, u32 key, 479 struct auxtrace_cache_entry *entry); 480 void *auxtrace_cache__lookup(struct auxtrace_cache *c, u32 key); 481 482 struct auxtrace_record *auxtrace_record__init(struct perf_evlist *evlist, 483 int *err); 484 485 int auxtrace_parse_snapshot_options(struct auxtrace_record *itr, 486 struct record_opts *opts, 487 const char *str); 488 int auxtrace_record__options(struct auxtrace_record *itr, 489 struct perf_evlist *evlist, 490 struct record_opts *opts); 491 size_t auxtrace_record__info_priv_size(struct auxtrace_record *itr, 492 struct perf_evlist *evlist); 493 int auxtrace_record__info_fill(struct auxtrace_record *itr, 494 struct perf_session *session, 495 struct auxtrace_info_event *auxtrace_info, 496 size_t priv_size); 497 void auxtrace_record__free(struct auxtrace_record *itr); 498 int auxtrace_record__snapshot_start(struct auxtrace_record *itr); 499 int auxtrace_record__snapshot_finish(struct auxtrace_record *itr); 500 int auxtrace_record__find_snapshot(struct auxtrace_record *itr, int idx, 501 struct auxtrace_mmap *mm, 502 unsigned char *data, u64 *head, u64 *old); 503 u64 auxtrace_record__reference(struct auxtrace_record *itr); 504 505 int auxtrace_index__auxtrace_event(struct list_head *head, union perf_event *event, 506 off_t file_offset); 507 int auxtrace_index__write(int fd, struct list_head *head); 508 int auxtrace_index__process(int fd, u64 size, struct perf_session *session, 509 bool needs_swap); 510 void auxtrace_index__free(struct list_head *head); 511 512 void auxtrace_synth_error(struct auxtrace_error_event *auxtrace_error, int type, 513 int code, int cpu, pid_t pid, pid_t tid, u64 ip, 514 const char *msg); 515 516 int perf_event__synthesize_auxtrace_info(struct auxtrace_record *itr, 517 struct perf_tool *tool, 518 struct perf_session *session, 519 perf_event__handler_t process); 520 int perf_event__process_auxtrace_info(struct perf_session *session, 521 union perf_event *event); 522 s64 perf_event__process_auxtrace(struct perf_session *session, 523 union perf_event *event); 524 int perf_event__process_auxtrace_error(struct perf_session *session, 525 union perf_event *event); 526 int itrace_parse_synth_opts(const struct option *opt, const char *str, 527 int unset); 528 void itrace_synth_opts__set_default(struct itrace_synth_opts *synth_opts); 529 530 size_t perf_event__fprintf_auxtrace_error(union perf_event *event, FILE *fp); 531 void perf_session__auxtrace_error_inc(struct perf_session *session, 532 union perf_event *event); 533 void events_stats__auxtrace_error_warn(const struct events_stats *stats); 534 535 void addr_filters__init(struct addr_filters *filts); 536 void addr_filters__exit(struct addr_filters *filts); 537 int addr_filters__parse_bare_filter(struct addr_filters *filts, 538 const char *filter); 539 int auxtrace_parse_filters(struct perf_evlist *evlist); 540 541 static inline int auxtrace__process_event(struct perf_session *session, 542 union perf_event *event, 543 struct perf_sample *sample, 544 struct perf_tool *tool) 545 { 546 if (!session->auxtrace) 547 return 0; 548 549 return session->auxtrace->process_event(session, event, sample, tool); 550 } 551 552 static inline int auxtrace__flush_events(struct perf_session *session, 553 struct perf_tool *tool) 554 { 555 if (!session->auxtrace) 556 return 0; 557 558 return session->auxtrace->flush_events(session, tool); 559 } 560 561 static inline void auxtrace__free_events(struct perf_session *session) 562 { 563 if (!session->auxtrace) 564 return; 565 566 return session->auxtrace->free_events(session); 567 } 568 569 static inline void auxtrace__free(struct perf_session *session) 570 { 571 if (!session->auxtrace) 572 return; 573 574 return session->auxtrace->free(session); 575 } 576 577 #else 578 579 static inline struct auxtrace_record * 580 auxtrace_record__init(struct perf_evlist *evlist __maybe_unused, 581 int *err) 582 { 583 *err = 0; 584 return NULL; 585 } 586 587 static inline 588 void auxtrace_record__free(struct auxtrace_record *itr __maybe_unused) 589 { 590 } 591 592 static inline int 593 perf_event__synthesize_auxtrace_info(struct auxtrace_record *itr __maybe_unused, 594 struct perf_tool *tool __maybe_unused, 595 struct perf_session *session __maybe_unused, 596 perf_event__handler_t process __maybe_unused) 597 { 598 return -EINVAL; 599 } 600 601 static inline 602 int auxtrace_record__options(struct auxtrace_record *itr __maybe_unused, 603 struct perf_evlist *evlist __maybe_unused, 604 struct record_opts *opts __maybe_unused) 605 { 606 return 0; 607 } 608 609 #define perf_event__process_auxtrace_info 0 610 #define perf_event__process_auxtrace 0 611 #define perf_event__process_auxtrace_error 0 612 613 static inline 614 void perf_session__auxtrace_error_inc(struct perf_session *session 615 __maybe_unused, 616 union perf_event *event 617 __maybe_unused) 618 { 619 } 620 621 static inline 622 void events_stats__auxtrace_error_warn(const struct events_stats *stats 623 __maybe_unused) 624 { 625 } 626 627 static inline 628 int itrace_parse_synth_opts(const struct option *opt __maybe_unused, 629 const char *str __maybe_unused, 630 int unset __maybe_unused) 631 { 632 pr_err("AUX area tracing not supported\n"); 633 return -EINVAL; 634 } 635 636 static inline 637 int auxtrace_parse_snapshot_options(struct auxtrace_record *itr __maybe_unused, 638 struct record_opts *opts __maybe_unused, 639 const char *str) 640 { 641 if (!str) 642 return 0; 643 pr_err("AUX area tracing not supported\n"); 644 return -EINVAL; 645 } 646 647 static inline 648 int auxtrace__process_event(struct perf_session *session __maybe_unused, 649 union perf_event *event __maybe_unused, 650 struct perf_sample *sample __maybe_unused, 651 struct perf_tool *tool __maybe_unused) 652 { 653 return 0; 654 } 655 656 static inline 657 int auxtrace__flush_events(struct perf_session *session __maybe_unused, 658 struct perf_tool *tool __maybe_unused) 659 { 660 return 0; 661 } 662 663 static inline 664 void auxtrace__free_events(struct perf_session *session __maybe_unused) 665 { 666 } 667 668 static inline 669 void auxtrace_cache__free(struct auxtrace_cache *auxtrace_cache __maybe_unused) 670 { 671 } 672 673 static inline 674 void auxtrace__free(struct perf_session *session __maybe_unused) 675 { 676 } 677 678 static inline 679 int auxtrace_index__write(int fd __maybe_unused, 680 struct list_head *head __maybe_unused) 681 { 682 return -EINVAL; 683 } 684 685 static inline 686 int auxtrace_index__process(int fd __maybe_unused, 687 u64 size __maybe_unused, 688 struct perf_session *session __maybe_unused, 689 bool needs_swap __maybe_unused) 690 { 691 return -EINVAL; 692 } 693 694 static inline 695 void auxtrace_index__free(struct list_head *head __maybe_unused) 696 { 697 } 698 699 static inline 700 int auxtrace_parse_filters(struct perf_evlist *evlist __maybe_unused) 701 { 702 return 0; 703 } 704 705 int auxtrace_mmap__mmap(struct auxtrace_mmap *mm, 706 struct auxtrace_mmap_params *mp, 707 void *userpg, int fd); 708 void auxtrace_mmap__munmap(struct auxtrace_mmap *mm); 709 void auxtrace_mmap_params__init(struct auxtrace_mmap_params *mp, 710 off_t auxtrace_offset, 711 unsigned int auxtrace_pages, 712 bool auxtrace_overwrite); 713 void auxtrace_mmap_params__set_idx(struct auxtrace_mmap_params *mp, 714 struct perf_evlist *evlist, int idx, 715 bool per_cpu); 716 717 #endif 718 719 #endif 720