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 #include <asm/barrier.h> 19 20 #include "event.h" 21 22 union perf_event; 23 struct perf_session; 24 struct evlist; 25 struct perf_tool; 26 struct perf_mmap; 27 struct option; 28 struct record_opts; 29 struct perf_record_auxtrace_info; 30 struct events_stats; 31 32 enum auxtrace_error_type { 33 PERF_AUXTRACE_ERROR_ITRACE = 1, 34 PERF_AUXTRACE_ERROR_MAX 35 }; 36 37 /* Auxtrace records must have the same alignment as perf event records */ 38 #define PERF_AUXTRACE_RECORD_ALIGNMENT 8 39 40 enum auxtrace_type { 41 PERF_AUXTRACE_UNKNOWN, 42 PERF_AUXTRACE_INTEL_PT, 43 PERF_AUXTRACE_INTEL_BTS, 44 PERF_AUXTRACE_CS_ETM, 45 PERF_AUXTRACE_ARM_SPE, 46 PERF_AUXTRACE_S390_CPUMSF, 47 }; 48 49 enum itrace_period_type { 50 PERF_ITRACE_PERIOD_INSTRUCTIONS, 51 PERF_ITRACE_PERIOD_TICKS, 52 PERF_ITRACE_PERIOD_NANOSECS, 53 }; 54 55 /** 56 * struct itrace_synth_opts - AUX area tracing synthesis options. 57 * @set: indicates whether or not options have been set 58 * @default_no_sample: Default to no sampling. 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 * @other_events: whether to synthesize other events recorded due to the use of 67 * aux_output 68 * @errors: whether to synthesize decoder error events 69 * @dont_decode: whether to skip decoding entirely 70 * @log: write a decoding log 71 * @calls: limit branch samples to calls (can be combined with @returns) 72 * @returns: limit branch samples to returns (can be combined with @calls) 73 * @callchain: add callchain to 'instructions' events 74 * @thread_stack: feed branches to the thread_stack 75 * @last_branch: add branch context to 'instruction' events 76 * @callchain_sz: maximum callchain size 77 * @last_branch_sz: branch context size 78 * @period: 'instructions' events period 79 * @period_type: 'instructions' events period type 80 * @initial_skip: skip N events at the beginning. 81 * @cpu_bitmap: CPUs for which to synthesize events, or NULL for all 82 * @ptime_range: time intervals to trace or NULL 83 * @range_num: number of time intervals to trace 84 */ 85 struct itrace_synth_opts { 86 bool set; 87 bool default_no_sample; 88 bool inject; 89 bool instructions; 90 bool branches; 91 bool transactions; 92 bool ptwrites; 93 bool pwr_events; 94 bool other_events; 95 bool errors; 96 bool dont_decode; 97 bool log; 98 bool calls; 99 bool returns; 100 bool callchain; 101 bool thread_stack; 102 bool last_branch; 103 unsigned int callchain_sz; 104 unsigned int last_branch_sz; 105 unsigned long long period; 106 enum itrace_period_type period_type; 107 unsigned long initial_skip; 108 unsigned long *cpu_bitmap; 109 struct perf_time_interval *ptime_range; 110 int range_num; 111 }; 112 113 /** 114 * struct auxtrace_index_entry - indexes a AUX area tracing event within a 115 * perf.data file. 116 * @file_offset: offset within the perf.data file 117 * @sz: size of the event 118 */ 119 struct auxtrace_index_entry { 120 u64 file_offset; 121 u64 sz; 122 }; 123 124 #define PERF_AUXTRACE_INDEX_ENTRY_COUNT 256 125 126 /** 127 * struct auxtrace_index - index of AUX area tracing events within a perf.data 128 * file. 129 * @list: linking a number of arrays of entries 130 * @nr: number of entries 131 * @entries: array of entries 132 */ 133 struct auxtrace_index { 134 struct list_head list; 135 size_t nr; 136 struct auxtrace_index_entry entries[PERF_AUXTRACE_INDEX_ENTRY_COUNT]; 137 }; 138 139 /** 140 * struct auxtrace - session callbacks to allow AUX area data decoding. 141 * @process_event: lets the decoder see all session events 142 * @process_auxtrace_event: process a PERF_RECORD_AUXTRACE event 143 * @flush_events: process any remaining data 144 * @free_events: free resources associated with event processing 145 * @free: free resources associated with the session 146 */ 147 struct auxtrace { 148 int (*process_event)(struct perf_session *session, 149 union perf_event *event, 150 struct perf_sample *sample, 151 struct perf_tool *tool); 152 int (*process_auxtrace_event)(struct perf_session *session, 153 union perf_event *event, 154 struct perf_tool *tool); 155 int (*flush_events)(struct perf_session *session, 156 struct perf_tool *tool); 157 void (*free_events)(struct perf_session *session); 158 void (*free)(struct perf_session *session); 159 }; 160 161 /** 162 * struct auxtrace_buffer - a buffer containing AUX area tracing data. 163 * @list: buffers are queued in a list held by struct auxtrace_queue 164 * @size: size of the buffer in bytes 165 * @pid: in per-thread mode, the pid this buffer is associated with 166 * @tid: in per-thread mode, the tid this buffer is associated with 167 * @cpu: in per-cpu mode, the cpu this buffer is associated with 168 * @data: actual buffer data (can be null if the data has not been loaded) 169 * @data_offset: file offset at which the buffer can be read 170 * @mmap_addr: mmap address at which the buffer can be read 171 * @mmap_size: size of the mmap at @mmap_addr 172 * @data_needs_freeing: @data was malloc'd so free it when it is no longer 173 * needed 174 * @consecutive: the original data was split up and this buffer is consecutive 175 * to the previous buffer 176 * @offset: offset as determined by aux_head / aux_tail members of struct 177 * perf_event_mmap_page 178 * @reference: an implementation-specific reference determined when the data is 179 * recorded 180 * @buffer_nr: used to number each buffer 181 * @use_size: implementation actually only uses this number of bytes 182 * @use_data: implementation actually only uses data starting at this address 183 */ 184 struct auxtrace_buffer { 185 struct list_head list; 186 size_t size; 187 pid_t pid; 188 pid_t tid; 189 int cpu; 190 void *data; 191 off_t data_offset; 192 void *mmap_addr; 193 size_t mmap_size; 194 bool data_needs_freeing; 195 bool consecutive; 196 u64 offset; 197 u64 reference; 198 u64 buffer_nr; 199 size_t use_size; 200 void *use_data; 201 }; 202 203 /** 204 * struct auxtrace_queue - a queue of AUX area tracing data buffers. 205 * @head: head of buffer list 206 * @tid: in per-thread mode, the tid this queue is associated with 207 * @cpu: in per-cpu mode, the cpu this queue is associated with 208 * @set: %true once this queue has been dedicated to a specific thread or cpu 209 * @priv: implementation-specific data 210 */ 211 struct auxtrace_queue { 212 struct list_head head; 213 pid_t tid; 214 int cpu; 215 bool set; 216 void *priv; 217 }; 218 219 /** 220 * struct auxtrace_queues - an array of AUX area tracing queues. 221 * @queue_array: array of queues 222 * @nr_queues: number of queues 223 * @new_data: set whenever new data is queued 224 * @populated: queues have been fully populated using the auxtrace_index 225 * @next_buffer_nr: used to number each buffer 226 */ 227 struct auxtrace_queues { 228 struct auxtrace_queue *queue_array; 229 unsigned int nr_queues; 230 bool new_data; 231 bool populated; 232 u64 next_buffer_nr; 233 }; 234 235 /** 236 * struct auxtrace_heap_item - element of struct auxtrace_heap. 237 * @queue_nr: queue number 238 * @ordinal: value used for sorting (lowest ordinal is top of the heap) expected 239 * to be a timestamp 240 */ 241 struct auxtrace_heap_item { 242 unsigned int queue_nr; 243 u64 ordinal; 244 }; 245 246 /** 247 * struct auxtrace_heap - a heap suitable for sorting AUX area tracing queues. 248 * @heap_array: the heap 249 * @heap_cnt: the number of elements in the heap 250 * @heap_sz: maximum number of elements (grows as needed) 251 */ 252 struct auxtrace_heap { 253 struct auxtrace_heap_item *heap_array; 254 unsigned int heap_cnt; 255 unsigned int heap_sz; 256 }; 257 258 /** 259 * struct auxtrace_mmap - records an mmap of the auxtrace buffer. 260 * @base: address of mapped area 261 * @userpg: pointer to buffer's perf_event_mmap_page 262 * @mask: %0 if @len is not a power of two, otherwise (@len - %1) 263 * @len: size of mapped area 264 * @prev: previous aux_head 265 * @idx: index of this mmap 266 * @tid: tid for a per-thread mmap (also set if there is only 1 tid on a per-cpu 267 * mmap) otherwise %0 268 * @cpu: cpu number for a per-cpu mmap otherwise %-1 269 */ 270 struct auxtrace_mmap { 271 void *base; 272 void *userpg; 273 size_t mask; 274 size_t len; 275 u64 prev; 276 int idx; 277 pid_t tid; 278 int cpu; 279 }; 280 281 /** 282 * struct auxtrace_mmap_params - parameters to set up struct auxtrace_mmap. 283 * @mask: %0 if @len is not a power of two, otherwise (@len - %1) 284 * @offset: file offset of mapped area 285 * @len: size of mapped area 286 * @prot: mmap memory protection 287 * @idx: index of this mmap 288 * @tid: tid for a per-thread mmap (also set if there is only 1 tid on a per-cpu 289 * mmap) otherwise %0 290 * @cpu: cpu number for a per-cpu mmap otherwise %-1 291 */ 292 struct auxtrace_mmap_params { 293 size_t mask; 294 off_t offset; 295 size_t len; 296 int prot; 297 int idx; 298 pid_t tid; 299 int cpu; 300 }; 301 302 /** 303 * struct auxtrace_record - callbacks for recording AUX area data. 304 * @recording_options: validate and process recording options 305 * @info_priv_size: return the size of the private data in auxtrace_info_event 306 * @info_fill: fill-in the private data in auxtrace_info_event 307 * @free: free this auxtrace record structure 308 * @snapshot_start: starting a snapshot 309 * @snapshot_finish: finishing a snapshot 310 * @find_snapshot: find data to snapshot within auxtrace mmap 311 * @parse_snapshot_options: parse snapshot options 312 * @reference: provide a 64-bit reference number for auxtrace_event 313 * @read_finish: called after reading from an auxtrace mmap 314 * @alignment: alignment (if any) for AUX area data 315 */ 316 struct auxtrace_record { 317 int (*recording_options)(struct auxtrace_record *itr, 318 struct evlist *evlist, 319 struct record_opts *opts); 320 size_t (*info_priv_size)(struct auxtrace_record *itr, 321 struct evlist *evlist); 322 int (*info_fill)(struct auxtrace_record *itr, 323 struct perf_session *session, 324 struct perf_record_auxtrace_info *auxtrace_info, 325 size_t priv_size); 326 void (*free)(struct auxtrace_record *itr); 327 int (*snapshot_start)(struct auxtrace_record *itr); 328 int (*snapshot_finish)(struct auxtrace_record *itr); 329 int (*find_snapshot)(struct auxtrace_record *itr, int idx, 330 struct auxtrace_mmap *mm, unsigned char *data, 331 u64 *head, u64 *old); 332 int (*parse_snapshot_options)(struct auxtrace_record *itr, 333 struct record_opts *opts, 334 const char *str); 335 u64 (*reference)(struct auxtrace_record *itr); 336 int (*read_finish)(struct auxtrace_record *itr, int idx); 337 unsigned int alignment; 338 }; 339 340 /** 341 * struct addr_filter - address filter. 342 * @list: list node 343 * @range: true if it is a range filter 344 * @start: true if action is 'filter' or 'start' 345 * @action: 'filter', 'start' or 'stop' ('tracestop' is accepted but converted 346 * to 'stop') 347 * @sym_from: symbol name for the filter address 348 * @sym_to: symbol name that determines the filter size 349 * @sym_from_idx: selects n'th from symbols with the same name (0 means global 350 * and less than 0 means symbol must be unique) 351 * @sym_to_idx: same as @sym_from_idx but for @sym_to 352 * @addr: filter address 353 * @size: filter region size (for range filters) 354 * @filename: DSO file name or NULL for the kernel 355 * @str: allocated string that contains the other string members 356 */ 357 struct addr_filter { 358 struct list_head list; 359 bool range; 360 bool start; 361 const char *action; 362 const char *sym_from; 363 const char *sym_to; 364 int sym_from_idx; 365 int sym_to_idx; 366 u64 addr; 367 u64 size; 368 const char *filename; 369 char *str; 370 }; 371 372 /** 373 * struct addr_filters - list of address filters. 374 * @head: list of address filters 375 * @cnt: number of address filters 376 */ 377 struct addr_filters { 378 struct list_head head; 379 int cnt; 380 }; 381 382 struct auxtrace_cache; 383 384 #ifdef HAVE_AUXTRACE_SUPPORT 385 386 /* 387 * In snapshot mode the mmapped page is read-only which makes using 388 * __sync_val_compare_and_swap() problematic. However, snapshot mode expects 389 * the buffer is not updated while the snapshot is made (e.g. Intel PT disables 390 * the event) so there is not a race anyway. 391 */ 392 static inline u64 auxtrace_mmap__read_snapshot_head(struct auxtrace_mmap *mm) 393 { 394 struct perf_event_mmap_page *pc = mm->userpg; 395 u64 head = READ_ONCE(pc->aux_head); 396 397 /* Ensure all reads are done after we read the head */ 398 rmb(); 399 return head; 400 } 401 402 static inline u64 auxtrace_mmap__read_head(struct auxtrace_mmap *mm) 403 { 404 struct perf_event_mmap_page *pc = mm->userpg; 405 #if BITS_PER_LONG == 64 || !defined(HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT) 406 u64 head = READ_ONCE(pc->aux_head); 407 #else 408 u64 head = __sync_val_compare_and_swap(&pc->aux_head, 0, 0); 409 #endif 410 411 /* Ensure all reads are done after we read the head */ 412 rmb(); 413 return head; 414 } 415 416 static inline void auxtrace_mmap__write_tail(struct auxtrace_mmap *mm, u64 tail) 417 { 418 struct perf_event_mmap_page *pc = mm->userpg; 419 #if BITS_PER_LONG != 64 && defined(HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT) 420 u64 old_tail; 421 #endif 422 423 /* Ensure all reads are done before we write the tail out */ 424 mb(); 425 #if BITS_PER_LONG == 64 || !defined(HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT) 426 pc->aux_tail = tail; 427 #else 428 do { 429 old_tail = __sync_val_compare_and_swap(&pc->aux_tail, 0, 0); 430 } while (!__sync_bool_compare_and_swap(&pc->aux_tail, old_tail, tail)); 431 #endif 432 } 433 434 int auxtrace_mmap__mmap(struct auxtrace_mmap *mm, 435 struct auxtrace_mmap_params *mp, 436 void *userpg, int fd); 437 void auxtrace_mmap__munmap(struct auxtrace_mmap *mm); 438 void auxtrace_mmap_params__init(struct auxtrace_mmap_params *mp, 439 off_t auxtrace_offset, 440 unsigned int auxtrace_pages, 441 bool auxtrace_overwrite); 442 void auxtrace_mmap_params__set_idx(struct auxtrace_mmap_params *mp, 443 struct evlist *evlist, int idx, 444 bool per_cpu); 445 446 typedef int (*process_auxtrace_t)(struct perf_tool *tool, 447 struct perf_mmap *map, 448 union perf_event *event, void *data1, 449 size_t len1, void *data2, size_t len2); 450 451 int auxtrace_mmap__read(struct perf_mmap *map, struct auxtrace_record *itr, 452 struct perf_tool *tool, process_auxtrace_t fn); 453 454 int auxtrace_mmap__read_snapshot(struct perf_mmap *map, 455 struct auxtrace_record *itr, 456 struct perf_tool *tool, process_auxtrace_t fn, 457 size_t snapshot_size); 458 459 int auxtrace_queues__init(struct auxtrace_queues *queues); 460 int auxtrace_queues__add_event(struct auxtrace_queues *queues, 461 struct perf_session *session, 462 union perf_event *event, off_t data_offset, 463 struct auxtrace_buffer **buffer_ptr); 464 void auxtrace_queues__free(struct auxtrace_queues *queues); 465 int auxtrace_queues__process_index(struct auxtrace_queues *queues, 466 struct perf_session *session); 467 struct auxtrace_buffer *auxtrace_buffer__next(struct auxtrace_queue *queue, 468 struct auxtrace_buffer *buffer); 469 void *auxtrace_buffer__get_data(struct auxtrace_buffer *buffer, int fd); 470 void auxtrace_buffer__put_data(struct auxtrace_buffer *buffer); 471 void auxtrace_buffer__drop_data(struct auxtrace_buffer *buffer); 472 void auxtrace_buffer__free(struct auxtrace_buffer *buffer); 473 474 int auxtrace_heap__add(struct auxtrace_heap *heap, unsigned int queue_nr, 475 u64 ordinal); 476 void auxtrace_heap__pop(struct auxtrace_heap *heap); 477 void auxtrace_heap__free(struct auxtrace_heap *heap); 478 479 struct auxtrace_cache_entry { 480 struct hlist_node hash; 481 u32 key; 482 }; 483 484 struct auxtrace_cache *auxtrace_cache__new(unsigned int bits, size_t entry_size, 485 unsigned int limit_percent); 486 void auxtrace_cache__free(struct auxtrace_cache *auxtrace_cache); 487 void *auxtrace_cache__alloc_entry(struct auxtrace_cache *c); 488 void auxtrace_cache__free_entry(struct auxtrace_cache *c, void *entry); 489 int auxtrace_cache__add(struct auxtrace_cache *c, u32 key, 490 struct auxtrace_cache_entry *entry); 491 void *auxtrace_cache__lookup(struct auxtrace_cache *c, u32 key); 492 493 struct auxtrace_record *auxtrace_record__init(struct evlist *evlist, 494 int *err); 495 496 int auxtrace_parse_snapshot_options(struct auxtrace_record *itr, 497 struct record_opts *opts, 498 const char *str); 499 int auxtrace_record__options(struct auxtrace_record *itr, 500 struct evlist *evlist, 501 struct record_opts *opts); 502 size_t auxtrace_record__info_priv_size(struct auxtrace_record *itr, 503 struct evlist *evlist); 504 int auxtrace_record__info_fill(struct auxtrace_record *itr, 505 struct perf_session *session, 506 struct perf_record_auxtrace_info *auxtrace_info, 507 size_t priv_size); 508 void auxtrace_record__free(struct auxtrace_record *itr); 509 int auxtrace_record__snapshot_start(struct auxtrace_record *itr); 510 int auxtrace_record__snapshot_finish(struct auxtrace_record *itr, bool on_exit); 511 int auxtrace_record__find_snapshot(struct auxtrace_record *itr, int idx, 512 struct auxtrace_mmap *mm, 513 unsigned char *data, u64 *head, u64 *old); 514 u64 auxtrace_record__reference(struct auxtrace_record *itr); 515 516 int auxtrace_index__auxtrace_event(struct list_head *head, union perf_event *event, 517 off_t file_offset); 518 int auxtrace_index__write(int fd, struct list_head *head); 519 int auxtrace_index__process(int fd, u64 size, struct perf_session *session, 520 bool needs_swap); 521 void auxtrace_index__free(struct list_head *head); 522 523 void auxtrace_synth_error(struct perf_record_auxtrace_error *auxtrace_error, int type, 524 int code, int cpu, pid_t pid, pid_t tid, u64 ip, 525 const char *msg, u64 timestamp); 526 527 int perf_event__synthesize_auxtrace_info(struct auxtrace_record *itr, 528 struct perf_tool *tool, 529 struct perf_session *session, 530 perf_event__handler_t process); 531 int perf_event__process_auxtrace_info(struct perf_session *session, 532 union perf_event *event); 533 s64 perf_event__process_auxtrace(struct perf_session *session, 534 union perf_event *event); 535 int perf_event__process_auxtrace_error(struct perf_session *session, 536 union perf_event *event); 537 int itrace_parse_synth_opts(const struct option *opt, const char *str, 538 int unset); 539 void itrace_synth_opts__set_default(struct itrace_synth_opts *synth_opts, 540 bool no_sample); 541 542 size_t perf_event__fprintf_auxtrace_error(union perf_event *event, FILE *fp); 543 void perf_session__auxtrace_error_inc(struct perf_session *session, 544 union perf_event *event); 545 void events_stats__auxtrace_error_warn(const struct events_stats *stats); 546 547 void addr_filters__init(struct addr_filters *filts); 548 void addr_filters__exit(struct addr_filters *filts); 549 int addr_filters__parse_bare_filter(struct addr_filters *filts, 550 const char *filter); 551 int auxtrace_parse_filters(struct evlist *evlist); 552 553 int auxtrace__process_event(struct perf_session *session, union perf_event *event, 554 struct perf_sample *sample, struct perf_tool *tool); 555 int auxtrace__flush_events(struct perf_session *session, struct perf_tool *tool); 556 void auxtrace__free_events(struct perf_session *session); 557 void auxtrace__free(struct perf_session *session); 558 559 #define ITRACE_HELP \ 560 " i: synthesize instructions events\n" \ 561 " b: synthesize branches events\n" \ 562 " c: synthesize branches events (calls only)\n" \ 563 " r: synthesize branches events (returns only)\n" \ 564 " x: synthesize transactions events\n" \ 565 " w: synthesize ptwrite events\n" \ 566 " p: synthesize power events\n" \ 567 " e: synthesize error events\n" \ 568 " d: create a debug log\n" \ 569 " g[len]: synthesize a call chain (use with i or x)\n" \ 570 " l[len]: synthesize last branch entries (use with i or x)\n" \ 571 " sNUMBER: skip initial number of events\n" \ 572 " PERIOD[ns|us|ms|i|t]: specify period to sample stream\n" \ 573 " concatenate multiple options. Default is ibxwpe or cewp\n" 574 575 static inline 576 void itrace_synth_opts__set_time_range(struct itrace_synth_opts *opts, 577 struct perf_time_interval *ptime_range, 578 int range_num) 579 { 580 opts->ptime_range = ptime_range; 581 opts->range_num = range_num; 582 } 583 584 static inline 585 void itrace_synth_opts__clear_time_range(struct itrace_synth_opts *opts) 586 { 587 opts->ptime_range = NULL; 588 opts->range_num = 0; 589 } 590 591 #else 592 #include "debug.h" 593 594 static inline struct auxtrace_record * 595 auxtrace_record__init(struct evlist *evlist __maybe_unused, 596 int *err) 597 { 598 *err = 0; 599 return NULL; 600 } 601 602 static inline 603 void auxtrace_record__free(struct auxtrace_record *itr __maybe_unused) 604 { 605 } 606 607 static inline int 608 perf_event__synthesize_auxtrace_info(struct auxtrace_record *itr __maybe_unused, 609 struct perf_tool *tool __maybe_unused, 610 struct perf_session *session __maybe_unused, 611 perf_event__handler_t process __maybe_unused) 612 { 613 return -EINVAL; 614 } 615 616 static inline 617 int auxtrace_record__options(struct auxtrace_record *itr __maybe_unused, 618 struct evlist *evlist __maybe_unused, 619 struct record_opts *opts __maybe_unused) 620 { 621 return 0; 622 } 623 624 #define perf_event__process_auxtrace_info 0 625 #define perf_event__process_auxtrace 0 626 #define perf_event__process_auxtrace_error 0 627 628 static inline 629 void perf_session__auxtrace_error_inc(struct perf_session *session 630 __maybe_unused, 631 union perf_event *event 632 __maybe_unused) 633 { 634 } 635 636 static inline 637 void events_stats__auxtrace_error_warn(const struct events_stats *stats 638 __maybe_unused) 639 { 640 } 641 642 static inline 643 int itrace_parse_synth_opts(const struct option *opt __maybe_unused, 644 const char *str __maybe_unused, 645 int unset __maybe_unused) 646 { 647 pr_err("AUX area tracing not supported\n"); 648 return -EINVAL; 649 } 650 651 static inline 652 int auxtrace_parse_snapshot_options(struct auxtrace_record *itr __maybe_unused, 653 struct record_opts *opts __maybe_unused, 654 const char *str) 655 { 656 if (!str) 657 return 0; 658 pr_err("AUX area tracing not supported\n"); 659 return -EINVAL; 660 } 661 662 static inline 663 int auxtrace__process_event(struct perf_session *session __maybe_unused, 664 union perf_event *event __maybe_unused, 665 struct perf_sample *sample __maybe_unused, 666 struct perf_tool *tool __maybe_unused) 667 { 668 return 0; 669 } 670 671 static inline 672 int auxtrace__flush_events(struct perf_session *session __maybe_unused, 673 struct perf_tool *tool __maybe_unused) 674 { 675 return 0; 676 } 677 678 static inline 679 void auxtrace__free_events(struct perf_session *session __maybe_unused) 680 { 681 } 682 683 static inline 684 void auxtrace_cache__free(struct auxtrace_cache *auxtrace_cache __maybe_unused) 685 { 686 } 687 688 static inline 689 void auxtrace__free(struct perf_session *session __maybe_unused) 690 { 691 } 692 693 static inline 694 int auxtrace_index__write(int fd __maybe_unused, 695 struct list_head *head __maybe_unused) 696 { 697 return -EINVAL; 698 } 699 700 static inline 701 int auxtrace_index__process(int fd __maybe_unused, 702 u64 size __maybe_unused, 703 struct perf_session *session __maybe_unused, 704 bool needs_swap __maybe_unused) 705 { 706 return -EINVAL; 707 } 708 709 static inline 710 void auxtrace_index__free(struct list_head *head __maybe_unused) 711 { 712 } 713 714 static inline 715 int auxtrace_parse_filters(struct evlist *evlist __maybe_unused) 716 { 717 return 0; 718 } 719 720 int auxtrace_mmap__mmap(struct auxtrace_mmap *mm, 721 struct auxtrace_mmap_params *mp, 722 void *userpg, int fd); 723 void auxtrace_mmap__munmap(struct auxtrace_mmap *mm); 724 void auxtrace_mmap_params__init(struct auxtrace_mmap_params *mp, 725 off_t auxtrace_offset, 726 unsigned int auxtrace_pages, 727 bool auxtrace_overwrite); 728 void auxtrace_mmap_params__set_idx(struct auxtrace_mmap_params *mp, 729 struct evlist *evlist, int idx, 730 bool per_cpu); 731 732 #define ITRACE_HELP "" 733 734 static inline 735 void itrace_synth_opts__set_time_range(struct itrace_synth_opts *opts 736 __maybe_unused, 737 struct perf_time_interval *ptime_range 738 __maybe_unused, 739 int range_num __maybe_unused) 740 { 741 } 742 743 static inline 744 void itrace_synth_opts__clear_time_range(struct itrace_synth_opts *opts 745 __maybe_unused) 746 { 747 } 748 749 #endif 750 751 #endif 752