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