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