tools/perf/util/auxtrace.h

   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 };
  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  * @inject: indicates the event (not just the sample) must be fully synthesized
  59  *          because 'perf inject' will write it out
  60  * @instructions: whether to synthesize 'instructions' events
  61  * @branches: whether to synthesize 'branches' events
  62  * @transactions: whether to synthesize events for transactions
  63  * @ptwrites: whether to synthesize events for ptwrites
  64  * @pwr_events: whether to synthesize power events
  65  * @errors: whether to synthesize decoder error events
  66  * @dont_decode: whether to skip decoding entirely
  67  * @log: write a decoding log
  68  * @calls: limit branch samples to calls (can be combined with @returns)
  69  * @returns: limit branch samples to returns (can be combined with @calls)
  70  * @callchain: add callchain to 'instructions' events
  71  * @thread_stack: feed branches to the thread_stack
  72  * @last_branch: add branch context to 'instruction' events
  73  * @callchain_sz: maximum callchain size
  74  * @last_branch_sz: branch context size
  75  * @period: 'instructions' events period
  76  * @period_type: 'instructions' events period type
  77  * @initial_skip: skip N events at the beginning.
  78  * @cpu_bitmap: CPUs for which to synthesize events, or NULL for all
  79  */
  80 struct itrace_synth_opts {
  81         bool                    set;
  82         bool                    inject;
  83         bool                    instructions;
  84         bool                    branches;
  85         bool                    transactions;
  86         bool                    ptwrites;
  87         bool                    pwr_events;
  88         bool                    errors;
  89         bool                    dont_decode;
  90         bool                    log;
  91         bool                    calls;
  92         bool                    returns;
  93         bool                    callchain;
  94         bool                    thread_stack;
  95         bool                    last_branch;
  96         unsigned int            callchain_sz;
  97         unsigned int            last_branch_sz;
  98         unsigned long long      period;
  99         enum itrace_period_type period_type;
 100         unsigned long           initial_skip;
 101         unsigned long           *cpu_bitmap;
 102 };
 103
 104 /**
 105  * struct auxtrace_index_entry - indexes a AUX area tracing event within a
 106  *                               perf.data file.
 107  * @file_offset: offset within the perf.data file
 108  * @sz: size of the event
 109  */
 110 struct auxtrace_index_entry {
 111         u64                     file_offset;
 112         u64                     sz;
 113 };
 114
 115 #define PERF_AUXTRACE_INDEX_ENTRY_COUNT 256
 116
 117 /**
 118  * struct auxtrace_index - index of AUX area tracing events within a perf.data
 119  *                         file.
 120  * @list: linking a number of arrays of entries
 121  * @nr: number of entries
 122  * @entries: array of entries
 123  */
 124 struct auxtrace_index {
 125         struct list_head        list;
 126         size_t                  nr;
 127         struct auxtrace_index_entry entries[PERF_AUXTRACE_INDEX_ENTRY_COUNT];
 128 };
 129
 130 /**
 131  * struct auxtrace - session callbacks to allow AUX area data decoding.
 132  * @process_event: lets the decoder see all session events
 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  */
 305 struct auxtrace_record {
 306         int (*recording_options)(struct auxtrace_record *itr,
 307                                  struct perf_evlist *evlist,
 308                                  struct record_opts *opts);
 309         size_t (*info_priv_size)(struct auxtrace_record *itr,
 310                                  struct perf_evlist *evlist);
 311         int (*info_fill)(struct auxtrace_record *itr,
 312                          struct perf_session *session,
 313                          struct auxtrace_info_event *auxtrace_info,
 314                          size_t priv_size);
 315         void (*free)(struct auxtrace_record *itr);
 316         int (*snapshot_start)(struct auxtrace_record *itr);
 317         int (*snapshot_finish)(struct auxtrace_record *itr);
 318         int (*find_snapshot)(struct auxtrace_record *itr, int idx,
 319                              struct auxtrace_mmap *mm, unsigned char *data,
 320                              u64 *head, u64 *old);
 321         int (*parse_snapshot_options)(struct auxtrace_record *itr,
 322                                       struct record_opts *opts,
 323                                       const char *str);
 324         u64 (*reference)(struct auxtrace_record *itr);
 325         int (*read_finish)(struct auxtrace_record *itr, int idx);
 326         unsigned int alignment;
 327 };
 328
 329 /**
 330  * struct addr_filter - address filter.
 331  * @list: list node
 332  * @range: true if it is a range filter
 333  * @start: true if action is 'filter' or 'start'
 334  * @action: 'filter', 'start' or 'stop' ('tracestop' is accepted but converted
 335  *          to 'stop')
 336  * @sym_from: symbol name for the filter address
 337  * @sym_to: symbol name that determines the filter size
 338  * @sym_from_idx: selects n'th from symbols with the same name (0 means global
 339  *                and less than 0 means symbol must be unique)
 340  * @sym_to_idx: same as @sym_from_idx but for @sym_to
 341  * @addr: filter address
 342  * @size: filter region size (for range filters)
 343  * @filename: DSO file name or NULL for the kernel
 344  * @str: allocated string that contains the other string members
 345  */
 346 struct addr_filter {
 347         struct list_head        list;
 348         bool                    range;
 349         bool                    start;
 350         const char              *action;
 351         const char              *sym_from;
 352         const char              *sym_to;
 353         int                     sym_from_idx;
 354         int                     sym_to_idx;
 355         u64                     addr;
 356         u64                     size;
 357         const char              *filename;
 358         char                    *str;
 359 };
 360
 361 /**
 362  * struct addr_filters - list of address filters.
 363  * @head: list of address filters
 364  * @cnt: number of address filters
 365  */
 366 struct addr_filters {
 367         struct list_head        head;
 368         int                     cnt;
 369 };
 370
 371 #ifdef HAVE_AUXTRACE_SUPPORT
 372
 373 /*
 374  * In snapshot mode the mmapped page is read-only which makes using
 375  * __sync_val_compare_and_swap() problematic.  However, snapshot mode expects
 376  * the buffer is not updated while the snapshot is made (e.g. Intel PT disables
 377  * the event) so there is not a race anyway.
 378  */
 379 static inline u64 auxtrace_mmap__read_snapshot_head(struct auxtrace_mmap *mm)
 380 {
 381         struct perf_event_mmap_page *pc = mm->userpg;
 382         u64 head = READ_ONCE(pc->aux_head);
 383
 384         /* Ensure all reads are done after we read the head */
 385         rmb();
 386         return head;
 387 }
 388
 389 static inline u64 auxtrace_mmap__read_head(struct auxtrace_mmap *mm)
 390 {
 391         struct perf_event_mmap_page *pc = mm->userpg;
 392 #if BITS_PER_LONG == 64 || !defined(HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT)
 393         u64 head = READ_ONCE(pc->aux_head);
 394 #else
 395         u64 head = __sync_val_compare_and_swap(&pc->aux_head, 0, 0);
 396 #endif
 397
 398         /* Ensure all reads are done after we read the head */
 399         rmb();
 400         return head;
 401 }
 402
 403 static inline void auxtrace_mmap__write_tail(struct auxtrace_mmap *mm, u64 tail)
 404 {
 405         struct perf_event_mmap_page *pc = mm->userpg;
 406 #if BITS_PER_LONG != 64 && defined(HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT)
 407         u64 old_tail;
 408 #endif
 409
 410         /* Ensure all reads are done before we write the tail out */
 411         mb();
 412 #if BITS_PER_LONG == 64 || !defined(HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT)
 413         pc->aux_tail = tail;
 414 #else
 415         do {
 416                 old_tail = __sync_val_compare_and_swap(&pc->aux_tail, 0, 0);
 417         } while (!__sync_bool_compare_and_swap(&pc->aux_tail, old_tail, tail));
 418 #endif
 419 }
 420
 421 int auxtrace_mmap__mmap(struct auxtrace_mmap *mm,
 422                         struct auxtrace_mmap_params *mp,
 423                         void *userpg, int fd);
 424 void auxtrace_mmap__munmap(struct auxtrace_mmap *mm);
 425 void auxtrace_mmap_params__init(struct auxtrace_mmap_params *mp,
 426                                 off_t auxtrace_offset,
 427                                 unsigned int auxtrace_pages,
 428                                 bool auxtrace_overwrite);
 429 void auxtrace_mmap_params__set_idx(struct auxtrace_mmap_params *mp,
 430                                    struct perf_evlist *evlist, int idx,
 431                                    bool per_cpu);
 432
 433 typedef int (*process_auxtrace_t)(struct perf_tool *tool,
 434                                   union perf_event *event, void *data1,
 435                                   size_t len1, void *data2, size_t len2);
 436
 437 int auxtrace_mmap__read(struct auxtrace_mmap *mm, struct auxtrace_record *itr,
 438                         struct perf_tool *tool, process_auxtrace_t fn);
 439
 440 int auxtrace_mmap__read_snapshot(struct auxtrace_mmap *mm,
 441                                  struct auxtrace_record *itr,
 442                                  struct perf_tool *tool, process_auxtrace_t fn,
 443                                  size_t snapshot_size);
 444
 445 int auxtrace_queues__init(struct auxtrace_queues *queues);
 446 int auxtrace_queues__add_event(struct auxtrace_queues *queues,
 447                                struct perf_session *session,
 448                                union perf_event *event, off_t data_offset,
 449                                struct auxtrace_buffer **buffer_ptr);
 450 void auxtrace_queues__free(struct auxtrace_queues *queues);
 451 int auxtrace_queues__process_index(struct auxtrace_queues *queues,
 452                                    struct perf_session *session);
 453 struct auxtrace_buffer *auxtrace_buffer__next(struct auxtrace_queue *queue,
 454                                               struct auxtrace_buffer *buffer);
 455 void *auxtrace_buffer__get_data(struct auxtrace_buffer *buffer, int fd);
 456 void auxtrace_buffer__put_data(struct auxtrace_buffer *buffer);
 457 void auxtrace_buffer__drop_data(struct auxtrace_buffer *buffer);
 458 void auxtrace_buffer__free(struct auxtrace_buffer *buffer);
 459
 460 int auxtrace_heap__add(struct auxtrace_heap *heap, unsigned int queue_nr,
 461                        u64 ordinal);
 462 void auxtrace_heap__pop(struct auxtrace_heap *heap);
 463 void auxtrace_heap__free(struct auxtrace_heap *heap);
 464
 465 struct auxtrace_cache_entry {
 466         struct hlist_node hash;
 467         u32 key;
 468 };
 469
 470 struct auxtrace_cache *auxtrace_cache__new(unsigned int bits, size_t entry_size,
 471                                            unsigned int limit_percent);
 472 void auxtrace_cache__free(struct auxtrace_cache *auxtrace_cache);
 473 void *auxtrace_cache__alloc_entry(struct auxtrace_cache *c);
 474 void auxtrace_cache__free_entry(struct auxtrace_cache *c, void *entry);
 475 int auxtrace_cache__add(struct auxtrace_cache *c, u32 key,
 476                         struct auxtrace_cache_entry *entry);
 477 void *auxtrace_cache__lookup(struct auxtrace_cache *c, u32 key);
 478
 479 struct auxtrace_record *auxtrace_record__init(struct perf_evlist *evlist,
 480                                               int *err);
 481
 482 int auxtrace_parse_snapshot_options(struct auxtrace_record *itr,
 483                                     struct record_opts *opts,
 484                                     const char *str);
 485 int auxtrace_record__options(struct auxtrace_record *itr,
 486                              struct perf_evlist *evlist,
 487                              struct record_opts *opts);
 488 size_t auxtrace_record__info_priv_size(struct auxtrace_record *itr,
 489                                        struct perf_evlist *evlist);
 490 int auxtrace_record__info_fill(struct auxtrace_record *itr,
 491                                struct perf_session *session,
 492                                struct auxtrace_info_event *auxtrace_info,
 493                                size_t priv_size);
 494 void auxtrace_record__free(struct auxtrace_record *itr);
 495 int auxtrace_record__snapshot_start(struct auxtrace_record *itr);
 496 int auxtrace_record__snapshot_finish(struct auxtrace_record *itr);
 497 int auxtrace_record__find_snapshot(struct auxtrace_record *itr, int idx,
 498                                    struct auxtrace_mmap *mm,
 499                                    unsigned char *data, u64 *head, u64 *old);
 500 u64 auxtrace_record__reference(struct auxtrace_record *itr);
 501
 502 int auxtrace_index__auxtrace_event(struct list_head *head, union perf_event *event,
 503                                    off_t file_offset);
 504 int auxtrace_index__write(int fd, struct list_head *head);
 505 int auxtrace_index__process(int fd, u64 size, struct perf_session *session,
 506                             bool needs_swap);
 507 void auxtrace_index__free(struct list_head *head);
 508
 509 void auxtrace_synth_error(struct auxtrace_error_event *auxtrace_error, int type,
 510                           int code, int cpu, pid_t pid, pid_t tid, u64 ip,
 511                           const char *msg);
 512
 513 int perf_event__synthesize_auxtrace_info(struct auxtrace_record *itr,
 514                                          struct perf_tool *tool,
 515                                          struct perf_session *session,
 516                                          perf_event__handler_t process);
 517 int perf_event__process_auxtrace_info(struct perf_tool *tool,
 518                                       union perf_event *event,
 519                                       struct perf_session *session);
 520 s64 perf_event__process_auxtrace(struct perf_tool *tool,
 521                                  union perf_event *event,
 522                                  struct perf_session *session);
 523 int perf_event__process_auxtrace_error(struct perf_tool *tool,
 524                                        union perf_event *event,
 525                                        struct perf_session *session);
 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