1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * auxtrace.h: AUX area trace support 4 * Copyright (c) 2013-2015, Intel Corporation. 5 */ 6 7 #ifndef __PERF_AUXTRACE_H 8 #define __PERF_AUXTRACE_H 9 10 #include <sys/types.h> 11 #include <errno.h> 12 #include <stdbool.h> 13 #include <stddef.h> 14 #include <linux/list.h> 15 #include <linux/perf_event.h> 16 #include <linux/types.h> 17 #include <asm/bitsperlong.h> 18 19 #include "../perf.h" 20 #include "event.h" 21 #include "session.h" 22 #include "debug.h" 23 24 union perf_event; 25 struct perf_session; 26 struct perf_evlist; 27 struct perf_tool; 28 struct perf_mmap; 29 struct option; 30 struct record_opts; 31 struct auxtrace_info_event; 32 struct events_stats; 33 34 /* Auxtrace records must have the same alignment as perf event records */ 35 #define PERF_AUXTRACE_RECORD_ALIGNMENT 8 36 37 enum auxtrace_type { 38 PERF_AUXTRACE_UNKNOWN, 39 PERF_AUXTRACE_INTEL_PT, 40 PERF_AUXTRACE_INTEL_BTS, 41 PERF_AUXTRACE_CS_ETM, 42 PERF_AUXTRACE_ARM_SPE, 43 PERF_AUXTRACE_S390_CPUMSF, 44 }; 45 46 enum itrace_period_type { 47 PERF_ITRACE_PERIOD_INSTRUCTIONS, 48 PERF_ITRACE_PERIOD_TICKS, 49 PERF_ITRACE_PERIOD_NANOSECS, 50 }; 51 52 /** 53 * struct itrace_synth_opts - AUX area tracing synthesis options. 54 * @set: indicates whether or not options have been set 55 * @default_no_sample: Default to no sampling. 56 * @inject: indicates the event (not just the sample) must be fully synthesized 57 * because 'perf inject' will write it out 58 * @instructions: whether to synthesize 'instructions' events 59 * @branches: whether to synthesize 'branches' events 60 * @transactions: whether to synthesize events for transactions 61 * @ptwrites: whether to synthesize events for ptwrites 62 * @pwr_events: whether to synthesize power events 63 * @errors: whether to synthesize decoder error events 64 * @dont_decode: whether to skip decoding entirely 65 * @log: write a decoding log 66 * @calls: limit branch samples to calls (can be combined with @returns) 67 * @returns: limit branch samples to returns (can be combined with @calls) 68 * @callchain: add callchain to 'instructions' events 69 * @thread_stack: feed branches to the thread_stack 70 * @last_branch: add branch context to 'instruction' events 71 * @callchain_sz: maximum callchain size 72 * @last_branch_sz: branch context size 73 * @period: 'instructions' events period 74 * @period_type: 'instructions' events period type 75 * @initial_skip: skip N events at the beginning. 76 * @cpu_bitmap: CPUs for which to synthesize events, or NULL for all 77 */ 78 struct itrace_synth_opts { 79 bool set; 80 bool default_no_sample; 81 bool inject; 82 bool instructions; 83 bool branches; 84 bool transactions; 85 bool ptwrites; 86 bool pwr_events; 87 bool errors; 88 bool dont_decode; 89 bool log; 90 bool calls; 91 bool returns; 92 bool callchain; 93 bool thread_stack; 94 bool last_branch; 95 unsigned int callchain_sz; 96 unsigned int last_branch_sz; 97 unsigned long long period; 98 enum itrace_period_type period_type; 99 unsigned long initial_skip; 100 unsigned long *cpu_bitmap; 101 }; 102 103 /** 104 * struct auxtrace_index_entry - indexes a AUX area tracing event within a 105 * perf.data file. 106 * @file_offset: offset within the perf.data file 107 * @sz: size of the event 108 */ 109 struct auxtrace_index_entry { 110 u64 file_offset; 111 u64 sz; 112 }; 113 114 #define PERF_AUXTRACE_INDEX_ENTRY_COUNT 256 115 116 /** 117 * struct auxtrace_index - index of AUX area tracing events within a perf.data 118 * file. 119 * @list: linking a number of arrays of entries 120 * @nr: number of entries 121 * @entries: array of entries 122 */ 123 struct auxtrace_index { 124 struct list_head list; 125 size_t nr; 126 struct auxtrace_index_entry entries[PERF_AUXTRACE_INDEX_ENTRY_COUNT]; 127 }; 128 129 /** 130 * struct auxtrace - session callbacks to allow AUX area data decoding. 131 * @process_event: lets the decoder see all session events 132 * @process_auxtrace_event: process a PERF_RECORD_AUXTRACE event 133 * @flush_events: process any remaining data 134 * @free_events: free resources associated with event processing 135 * @free: free resources associated with the session 136 */ 137 struct auxtrace { 138 int (*process_event)(struct perf_session *session, 139 union perf_event *event, 140 struct perf_sample *sample, 141 struct perf_tool *tool); 142 int (*process_auxtrace_event)(struct perf_session *session, 143 union perf_event *event, 144 struct perf_tool *tool); 145 int (*flush_events)(struct perf_session *session, 146 struct perf_tool *tool); 147 void (*free_events)(struct perf_session *session); 148 void (*free)(struct perf_session *session); 149 }; 150 151 /** 152 * struct auxtrace_buffer - a buffer containing AUX area tracing data. 153 * @list: buffers are queued in a list held by struct auxtrace_queue 154 * @size: size of the buffer in bytes 155 * @pid: in per-thread mode, the pid this buffer is associated with 156 * @tid: in per-thread mode, the tid this buffer is associated with 157 * @cpu: in per-cpu mode, the cpu this buffer is associated with 158 * @data: actual buffer data (can be null if the data has not been loaded) 159 * @data_offset: file offset at which the buffer can be read 160 * @mmap_addr: mmap address at which the buffer can be read 161 * @mmap_size: size of the mmap at @mmap_addr 162 * @data_needs_freeing: @data was malloc'd so free it when it is no longer 163 * needed 164 * @consecutive: the original data was split up and this buffer is consecutive 165 * to the previous buffer 166 * @offset: offset as determined by aux_head / aux_tail members of struct 167 * perf_event_mmap_page 168 * @reference: an implementation-specific reference determined when the data is 169 * recorded 170 * @buffer_nr: used to number each buffer 171 * @use_size: implementation actually only uses this number of bytes 172 * @use_data: implementation actually only uses data starting at this address 173 */ 174 struct auxtrace_buffer { 175 struct list_head list; 176 size_t size; 177 pid_t pid; 178 pid_t tid; 179 int cpu; 180 void *data; 181 off_t data_offset; 182 void *mmap_addr; 183 size_t mmap_size; 184 bool data_needs_freeing; 185 bool consecutive; 186 u64 offset; 187 u64 reference; 188 u64 buffer_nr; 189 size_t use_size; 190 void *use_data; 191 }; 192 193 /** 194 * struct auxtrace_queue - a queue of AUX area tracing data buffers. 195 * @head: head of buffer list 196 * @tid: in per-thread mode, the tid this queue is associated with 197 * @cpu: in per-cpu mode, the cpu this queue is associated with 198 * @set: %true once this queue has been dedicated to a specific thread or cpu 199 * @priv: implementation-specific data 200 */ 201 struct auxtrace_queue { 202 struct list_head head; 203 pid_t tid; 204 int cpu; 205 bool set; 206 void *priv; 207 }; 208 209 /** 210 * struct auxtrace_queues - an array of AUX area tracing queues. 211 * @queue_array: array of queues 212 * @nr_queues: number of queues 213 * @new_data: set whenever new data is queued 214 * @populated: queues have been fully populated using the auxtrace_index 215 * @next_buffer_nr: used to number each buffer 216 */ 217 struct auxtrace_queues { 218 struct auxtrace_queue *queue_array; 219 unsigned int nr_queues; 220 bool new_data; 221 bool populated; 222 u64 next_buffer_nr; 223 }; 224 225 /** 226 * struct auxtrace_heap_item - element of struct auxtrace_heap. 227 * @queue_nr: queue number 228 * @ordinal: value used for sorting (lowest ordinal is top of the heap) expected 229 * to be a timestamp 230 */ 231 struct auxtrace_heap_item { 232 unsigned int queue_nr; 233 u64 ordinal; 234 }; 235 236 /** 237 * struct auxtrace_heap - a heap suitable for sorting AUX area tracing queues. 238 * @heap_array: the heap 239 * @heap_cnt: the number of elements in the heap 240 * @heap_sz: maximum number of elements (grows as needed) 241 */ 242 struct auxtrace_heap { 243 struct auxtrace_heap_item *heap_array; 244 unsigned int heap_cnt; 245 unsigned int heap_sz; 246 }; 247 248 /** 249 * struct auxtrace_mmap - records an mmap of the auxtrace buffer. 250 * @base: address of mapped area 251 * @userpg: pointer to buffer's perf_event_mmap_page 252 * @mask: %0 if @len is not a power of two, otherwise (@len - %1) 253 * @len: size of mapped area 254 * @prev: previous aux_head 255 * @idx: index of this mmap 256 * @tid: tid for a per-thread mmap (also set if there is only 1 tid on a per-cpu 257 * mmap) otherwise %0 258 * @cpu: cpu number for a per-cpu mmap otherwise %-1 259 */ 260 struct auxtrace_mmap { 261 void *base; 262 void *userpg; 263 size_t mask; 264 size_t len; 265 u64 prev; 266 int idx; 267 pid_t tid; 268 int cpu; 269 }; 270 271 /** 272 * struct auxtrace_mmap_params - parameters to set up struct auxtrace_mmap. 273 * @mask: %0 if @len is not a power of two, otherwise (@len - %1) 274 * @offset: file offset of mapped area 275 * @len: size of mapped area 276 * @prot: mmap memory protection 277 * @idx: index of this mmap 278 * @tid: tid for a per-thread mmap (also set if there is only 1 tid on a per-cpu 279 * mmap) otherwise %0 280 * @cpu: cpu number for a per-cpu mmap otherwise %-1 281 */ 282 struct auxtrace_mmap_params { 283 size_t mask; 284 off_t offset; 285 size_t len; 286 int prot; 287 int idx; 288 pid_t tid; 289 int cpu; 290 }; 291 292 /** 293 * struct auxtrace_record - callbacks for recording AUX area data. 294 * @recording_options: validate and process recording options 295 * @info_priv_size: return the size of the private data in auxtrace_info_event 296 * @info_fill: fill-in the private data in auxtrace_info_event 297 * @free: free this auxtrace record structure 298 * @snapshot_start: starting a snapshot 299 * @snapshot_finish: finishing a snapshot 300 * @find_snapshot: find data to snapshot within auxtrace mmap 301 * @parse_snapshot_options: parse snapshot options 302 * @reference: provide a 64-bit reference number for auxtrace_event 303 * @read_finish: called after reading from an auxtrace mmap 304 * @alignment: alignment (if any) for AUX area data 305 */ 306 struct auxtrace_record { 307 int (*recording_options)(struct auxtrace_record *itr, 308 struct perf_evlist *evlist, 309 struct record_opts *opts); 310 size_t (*info_priv_size)(struct auxtrace_record *itr, 311 struct perf_evlist *evlist); 312 int (*info_fill)(struct auxtrace_record *itr, 313 struct perf_session *session, 314 struct auxtrace_info_event *auxtrace_info, 315 size_t priv_size); 316 void (*free)(struct auxtrace_record *itr); 317 int (*snapshot_start)(struct auxtrace_record *itr); 318 int (*snapshot_finish)(struct auxtrace_record *itr); 319 int (*find_snapshot)(struct auxtrace_record *itr, int idx, 320 struct auxtrace_mmap *mm, unsigned char *data, 321 u64 *head, u64 *old); 322 int (*parse_snapshot_options)(struct auxtrace_record *itr, 323 struct record_opts *opts, 324 const char *str); 325 u64 (*reference)(struct auxtrace_record *itr); 326 int (*read_finish)(struct auxtrace_record *itr, int idx); 327 unsigned int alignment; 328 }; 329 330 /** 331 * struct addr_filter - address filter. 332 * @list: list node 333 * @range: true if it is a range filter 334 * @start: true if action is 'filter' or 'start' 335 * @action: 'filter', 'start' or 'stop' ('tracestop' is accepted but converted 336 * to 'stop') 337 * @sym_from: symbol name for the filter address 338 * @sym_to: symbol name that determines the filter size 339 * @sym_from_idx: selects n'th from symbols with the same name (0 means global 340 * and less than 0 means symbol must be unique) 341 * @sym_to_idx: same as @sym_from_idx but for @sym_to 342 * @addr: filter address 343 * @size: filter region size (for range filters) 344 * @filename: DSO file name or NULL for the kernel 345 * @str: allocated string that contains the other string members 346 */ 347 struct addr_filter { 348 struct list_head list; 349 bool range; 350 bool start; 351 const char *action; 352 const char *sym_from; 353 const char *sym_to; 354 int sym_from_idx; 355 int sym_to_idx; 356 u64 addr; 357 u64 size; 358 const char *filename; 359 char *str; 360 }; 361 362 /** 363 * struct addr_filters - list of address filters. 364 * @head: list of address filters 365 * @cnt: number of address filters 366 */ 367 struct addr_filters { 368 struct list_head head; 369 int cnt; 370 }; 371 372 #ifdef HAVE_AUXTRACE_SUPPORT 373 374 /* 375 * In snapshot mode the mmapped page is read-only which makes using 376 * __sync_val_compare_and_swap() problematic. However, snapshot mode expects 377 * the buffer is not updated while the snapshot is made (e.g. Intel PT disables 378 * the event) so there is not a race anyway. 379 */ 380 static inline u64 auxtrace_mmap__read_snapshot_head(struct auxtrace_mmap *mm) 381 { 382 struct perf_event_mmap_page *pc = mm->userpg; 383 u64 head = READ_ONCE(pc->aux_head); 384 385 /* Ensure all reads are done after we read the head */ 386 rmb(); 387 return head; 388 } 389 390 static inline u64 auxtrace_mmap__read_head(struct auxtrace_mmap *mm) 391 { 392 struct perf_event_mmap_page *pc = mm->userpg; 393 #if BITS_PER_LONG == 64 || !defined(HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT) 394 u64 head = READ_ONCE(pc->aux_head); 395 #else 396 u64 head = __sync_val_compare_and_swap(&pc->aux_head, 0, 0); 397 #endif 398 399 /* Ensure all reads are done after we read the head */ 400 rmb(); 401 return head; 402 } 403 404 static inline void auxtrace_mmap__write_tail(struct auxtrace_mmap *mm, u64 tail) 405 { 406 struct perf_event_mmap_page *pc = mm->userpg; 407 #if BITS_PER_LONG != 64 && defined(HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT) 408 u64 old_tail; 409 #endif 410 411 /* Ensure all reads are done before we write the tail out */ 412 mb(); 413 #if BITS_PER_LONG == 64 || !defined(HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT) 414 pc->aux_tail = tail; 415 #else 416 do { 417 old_tail = __sync_val_compare_and_swap(&pc->aux_tail, 0, 0); 418 } while (!__sync_bool_compare_and_swap(&pc->aux_tail, old_tail, tail)); 419 #endif 420 } 421 422 int auxtrace_mmap__mmap(struct auxtrace_mmap *mm, 423 struct auxtrace_mmap_params *mp, 424 void *userpg, int fd); 425 void auxtrace_mmap__munmap(struct auxtrace_mmap *mm); 426 void auxtrace_mmap_params__init(struct auxtrace_mmap_params *mp, 427 off_t auxtrace_offset, 428 unsigned int auxtrace_pages, 429 bool auxtrace_overwrite); 430 void auxtrace_mmap_params__set_idx(struct auxtrace_mmap_params *mp, 431 struct perf_evlist *evlist, int idx, 432 bool per_cpu); 433 434 typedef int (*process_auxtrace_t)(struct perf_tool *tool, 435 struct perf_mmap *map, 436 union perf_event *event, void *data1, 437 size_t len1, void *data2, size_t len2); 438 439 int auxtrace_mmap__read(struct perf_mmap *map, struct auxtrace_record *itr, 440 struct perf_tool *tool, process_auxtrace_t fn); 441 442 int auxtrace_mmap__read_snapshot(struct perf_mmap *map, 443 struct auxtrace_record *itr, 444 struct perf_tool *tool, process_auxtrace_t fn, 445 size_t snapshot_size); 446 447 int auxtrace_queues__init(struct auxtrace_queues *queues); 448 int auxtrace_queues__add_event(struct auxtrace_queues *queues, 449 struct perf_session *session, 450 union perf_event *event, off_t data_offset, 451 struct auxtrace_buffer **buffer_ptr); 452 void auxtrace_queues__free(struct auxtrace_queues *queues); 453 int auxtrace_queues__process_index(struct auxtrace_queues *queues, 454 struct perf_session *session); 455 struct auxtrace_buffer *auxtrace_buffer__next(struct auxtrace_queue *queue, 456 struct auxtrace_buffer *buffer); 457 void *auxtrace_buffer__get_data(struct auxtrace_buffer *buffer, int fd); 458 void auxtrace_buffer__put_data(struct auxtrace_buffer *buffer); 459 void auxtrace_buffer__drop_data(struct auxtrace_buffer *buffer); 460 void auxtrace_buffer__free(struct auxtrace_buffer *buffer); 461 462 int auxtrace_heap__add(struct auxtrace_heap *heap, unsigned int queue_nr, 463 u64 ordinal); 464 void auxtrace_heap__pop(struct auxtrace_heap *heap); 465 void auxtrace_heap__free(struct auxtrace_heap *heap); 466 467 struct auxtrace_cache_entry { 468 struct hlist_node hash; 469 u32 key; 470 }; 471 472 struct auxtrace_cache *auxtrace_cache__new(unsigned int bits, size_t entry_size, 473 unsigned int limit_percent); 474 void auxtrace_cache__free(struct auxtrace_cache *auxtrace_cache); 475 void *auxtrace_cache__alloc_entry(struct auxtrace_cache *c); 476 void auxtrace_cache__free_entry(struct auxtrace_cache *c, void *entry); 477 int auxtrace_cache__add(struct auxtrace_cache *c, u32 key, 478 struct auxtrace_cache_entry *entry); 479 void *auxtrace_cache__lookup(struct auxtrace_cache *c, u32 key); 480 481 struct auxtrace_record *auxtrace_record__init(struct perf_evlist *evlist, 482 int *err); 483 484 int auxtrace_parse_snapshot_options(struct auxtrace_record *itr, 485 struct record_opts *opts, 486 const char *str); 487 int auxtrace_record__options(struct auxtrace_record *itr, 488 struct perf_evlist *evlist, 489 struct record_opts *opts); 490 size_t auxtrace_record__info_priv_size(struct auxtrace_record *itr, 491 struct perf_evlist *evlist); 492 int auxtrace_record__info_fill(struct auxtrace_record *itr, 493 struct perf_session *session, 494 struct auxtrace_info_event *auxtrace_info, 495 size_t priv_size); 496 void auxtrace_record__free(struct auxtrace_record *itr); 497 int auxtrace_record__snapshot_start(struct auxtrace_record *itr); 498 int auxtrace_record__snapshot_finish(struct auxtrace_record *itr); 499 int auxtrace_record__find_snapshot(struct auxtrace_record *itr, int idx, 500 struct auxtrace_mmap *mm, 501 unsigned char *data, u64 *head, u64 *old); 502 u64 auxtrace_record__reference(struct auxtrace_record *itr); 503 504 int auxtrace_index__auxtrace_event(struct list_head *head, union perf_event *event, 505 off_t file_offset); 506 int auxtrace_index__write(int fd, struct list_head *head); 507 int auxtrace_index__process(int fd, u64 size, struct perf_session *session, 508 bool needs_swap); 509 void auxtrace_index__free(struct list_head *head); 510 511 void auxtrace_synth_error(struct auxtrace_error_event *auxtrace_error, int type, 512 int code, int cpu, pid_t pid, pid_t tid, u64 ip, 513 const char *msg, u64 timestamp); 514 515 int perf_event__synthesize_auxtrace_info(struct auxtrace_record *itr, 516 struct perf_tool *tool, 517 struct perf_session *session, 518 perf_event__handler_t process); 519 int perf_event__process_auxtrace_info(struct perf_session *session, 520 union perf_event *event); 521 s64 perf_event__process_auxtrace(struct perf_session *session, 522 union perf_event *event); 523 int perf_event__process_auxtrace_error(struct perf_session *session, 524 union perf_event *event); 525 int itrace_parse_synth_opts(const struct option *opt, const char *str, 526 int unset); 527 void itrace_synth_opts__set_default(struct itrace_synth_opts *synth_opts, 528 bool no_sample); 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 #define ITRACE_HELP \ 578 " i: synthesize instructions events\n" \ 579 " b: synthesize branches events\n" \ 580 " c: synthesize branches events (calls only)\n" \ 581 " r: synthesize branches events (returns only)\n" \ 582 " x: synthesize transactions events\n" \ 583 " w: synthesize ptwrite events\n" \ 584 " p: synthesize power events\n" \ 585 " e: synthesize error events\n" \ 586 " d: create a debug log\n" \ 587 " g[len]: synthesize a call chain (use with i or x)\n" \ 588 " l[len]: synthesize last branch entries (use with i or x)\n" \ 589 " sNUMBER: skip initial number of events\n" \ 590 " PERIOD[ns|us|ms|i|t]: specify period to sample stream\n" \ 591 " concatenate multiple options. Default is ibxwpe or cewp\n" 592 593 594 #else 595 596 static inline struct auxtrace_record * 597 auxtrace_record__init(struct perf_evlist *evlist __maybe_unused, 598 int *err) 599 { 600 *err = 0; 601 return NULL; 602 } 603 604 static inline 605 void auxtrace_record__free(struct auxtrace_record *itr __maybe_unused) 606 { 607 } 608 609 static inline int 610 perf_event__synthesize_auxtrace_info(struct auxtrace_record *itr __maybe_unused, 611 struct perf_tool *tool __maybe_unused, 612 struct perf_session *session __maybe_unused, 613 perf_event__handler_t process __maybe_unused) 614 { 615 return -EINVAL; 616 } 617 618 static inline 619 int auxtrace_record__options(struct auxtrace_record *itr __maybe_unused, 620 struct perf_evlist *evlist __maybe_unused, 621 struct record_opts *opts __maybe_unused) 622 { 623 return 0; 624 } 625 626 #define perf_event__process_auxtrace_info 0 627 #define perf_event__process_auxtrace 0 628 #define perf_event__process_auxtrace_error 0 629 630 static inline 631 void perf_session__auxtrace_error_inc(struct perf_session *session 632 __maybe_unused, 633 union perf_event *event 634 __maybe_unused) 635 { 636 } 637 638 static inline 639 void events_stats__auxtrace_error_warn(const struct events_stats *stats 640 __maybe_unused) 641 { 642 } 643 644 static inline 645 int itrace_parse_synth_opts(const struct option *opt __maybe_unused, 646 const char *str __maybe_unused, 647 int unset __maybe_unused) 648 { 649 pr_err("AUX area tracing not supported\n"); 650 return -EINVAL; 651 } 652 653 static inline 654 int auxtrace_parse_snapshot_options(struct auxtrace_record *itr __maybe_unused, 655 struct record_opts *opts __maybe_unused, 656 const char *str) 657 { 658 if (!str) 659 return 0; 660 pr_err("AUX area tracing not supported\n"); 661 return -EINVAL; 662 } 663 664 static inline 665 int auxtrace__process_event(struct perf_session *session __maybe_unused, 666 union perf_event *event __maybe_unused, 667 struct perf_sample *sample __maybe_unused, 668 struct perf_tool *tool __maybe_unused) 669 { 670 return 0; 671 } 672 673 static inline 674 int auxtrace__flush_events(struct perf_session *session __maybe_unused, 675 struct perf_tool *tool __maybe_unused) 676 { 677 return 0; 678 } 679 680 static inline 681 void auxtrace__free_events(struct perf_session *session __maybe_unused) 682 { 683 } 684 685 static inline 686 void auxtrace_cache__free(struct auxtrace_cache *auxtrace_cache __maybe_unused) 687 { 688 } 689 690 static inline 691 void auxtrace__free(struct perf_session *session __maybe_unused) 692 { 693 } 694 695 static inline 696 int auxtrace_index__write(int fd __maybe_unused, 697 struct list_head *head __maybe_unused) 698 { 699 return -EINVAL; 700 } 701 702 static inline 703 int auxtrace_index__process(int fd __maybe_unused, 704 u64 size __maybe_unused, 705 struct perf_session *session __maybe_unused, 706 bool needs_swap __maybe_unused) 707 { 708 return -EINVAL; 709 } 710 711 static inline 712 void auxtrace_index__free(struct list_head *head __maybe_unused) 713 { 714 } 715 716 static inline 717 int auxtrace_parse_filters(struct perf_evlist *evlist __maybe_unused) 718 { 719 return 0; 720 } 721 722 int auxtrace_mmap__mmap(struct auxtrace_mmap *mm, 723 struct auxtrace_mmap_params *mp, 724 void *userpg, int fd); 725 void auxtrace_mmap__munmap(struct auxtrace_mmap *mm); 726 void auxtrace_mmap_params__init(struct auxtrace_mmap_params *mp, 727 off_t auxtrace_offset, 728 unsigned int auxtrace_pages, 729 bool auxtrace_overwrite); 730 void auxtrace_mmap_params__set_idx(struct auxtrace_mmap_params *mp, 731 struct perf_evlist *evlist, int idx, 732 bool per_cpu); 733 734 #define ITRACE_HELP "" 735 736 #endif 737 738 #endif 739