tools/perf/util/auxtrace.h

   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 <stdio.h> // FILE
  15 #include <linux/list.h>
  16 #include <linux/perf_event.h>
  17 #include <linux/types.h>
  18 #include <asm/bitsperlong.h>
  19 #include <asm/barrier.h>
  20
  21 union perf_event;
  22 struct perf_session;
  23 struct evlist;
  24 struct evsel;
  25 struct perf_tool;
  26 struct mmap;
  27 struct perf_sample;
  28 struct option;
  29 struct record_opts;
  30 struct perf_record_auxtrace_error;
  31 struct perf_record_auxtrace_info;
  32 struct events_stats;
  33 struct perf_pmu;
  34
  35 enum auxtrace_error_type {
  36        PERF_AUXTRACE_ERROR_ITRACE  = 1,
  37        PERF_AUXTRACE_ERROR_MAX
  38 };
  39
  40 /* Auxtrace records must have the same alignment as perf event records */
  41 #define PERF_AUXTRACE_RECORD_ALIGNMENT 8
  42
  43 enum auxtrace_type {
  44         PERF_AUXTRACE_UNKNOWN,
  45         PERF_AUXTRACE_INTEL_PT,
  46         PERF_AUXTRACE_INTEL_BTS,
  47         PERF_AUXTRACE_CS_ETM,
  48         PERF_AUXTRACE_ARM_SPE,
  49         PERF_AUXTRACE_S390_CPUMSF,
  50 };
  51
  52 enum itrace_period_type {
  53         PERF_ITRACE_PERIOD_INSTRUCTIONS,
  54         PERF_ITRACE_PERIOD_TICKS,
  55         PERF_ITRACE_PERIOD_NANOSECS,
  56 };
  57
  58 #define AUXTRACE_ERR_FLG_OVERFLOW       (1 << ('o' - 'a'))
  59 #define AUXTRACE_ERR_FLG_DATA_LOST      (1 << ('l' - 'a'))
  60
  61 #define AUXTRACE_LOG_FLG_ALL_PERF_EVTS  (1 << ('a' - 'a'))
  62
  63 /**
  64  * struct itrace_synth_opts - AUX area tracing synthesis options.
  65  * @set: indicates whether or not options have been set
  66  * @default_no_sample: Default to no sampling.
  67  * @inject: indicates the event (not just the sample) must be fully synthesized
  68  *          because 'perf inject' will write it out
  69  * @instructions: whether to synthesize 'instructions' events
  70  * @branches: whether to synthesize 'branches' events
  71  *            (branch misses only for Arm SPE)
  72  * @transactions: whether to synthesize events for transactions
  73  * @ptwrites: whether to synthesize events for ptwrites
  74  * @pwr_events: whether to synthesize power events
  75  * @other_events: whether to synthesize other events recorded due to the use of
  76  *                aux_output
  77  * @errors: whether to synthesize decoder error events
  78  * @dont_decode: whether to skip decoding entirely
  79  * @log: write a decoding log
  80  * @calls: limit branch samples to calls (can be combined with @returns)
  81  * @returns: limit branch samples to returns (can be combined with @calls)
  82  * @callchain: add callchain to 'instructions' events
  83  * @add_callchain: add callchain to existing event records
  84  * @thread_stack: feed branches to the thread_stack
  85  * @last_branch: add branch context to 'instruction' events
  86  * @add_last_branch: add branch context to existing event records
  87  * @flc: whether to synthesize first level cache events
  88  * @llc: whether to synthesize last level cache events
  89  * @tlb: whether to synthesize TLB events
  90  * @remote_access: whether to synthesize remote access events
  91  * @callchain_sz: maximum callchain size
  92  * @last_branch_sz: branch context size
  93  * @period: 'instructions' events period
  94  * @period_type: 'instructions' events period type
  95  * @initial_skip: skip N events at the beginning.
  96  * @cpu_bitmap: CPUs for which to synthesize events, or NULL for all
  97  * @ptime_range: time intervals to trace or NULL
  98  * @range_num: number of time intervals to trace
  99  * @error_plus_flags: flags to affect what errors are reported
 100  * @error_minus_flags: flags to affect what errors are reported
 101  * @log_plus_flags: flags to affect what is logged
 102  * @log_minus_flags: flags to affect what is logged
 103  * @quick: quicker (less detailed) decoding
 104  */
 105 struct itrace_synth_opts {
 106         bool                    set;
 107         bool                    default_no_sample;
 108         bool                    inject;
 109         bool                    instructions;
 110         bool                    branches;
 111         bool                    transactions;
 112         bool                    ptwrites;
 113         bool                    pwr_events;
 114         bool                    other_events;
 115         bool                    errors;
 116         bool                    dont_decode;
 117         bool                    log;
 118         bool                    calls;
 119         bool                    returns;
 120         bool                    callchain;
 121         bool                    add_callchain;
 122         bool                    thread_stack;
 123         bool                    last_branch;
 124         bool                    add_last_branch;
 125         bool                    flc;
 126         bool                    llc;
 127         bool                    tlb;
 128         bool                    remote_access;
 129         unsigned int            callchain_sz;
 130         unsigned int            last_branch_sz;
 131         unsigned long long      period;
 132         enum itrace_period_type period_type;
 133         unsigned long           initial_skip;
 134         unsigned long           *cpu_bitmap;
 135         struct perf_time_interval *ptime_range;
 136         int                     range_num;
 137         unsigned int            error_plus_flags;
 138         unsigned int            error_minus_flags;
 139         unsigned int            log_plus_flags;
 140         unsigned int            log_minus_flags;
 141         unsigned int            quick;
 142 };
 143
 144 /**
 145  * struct auxtrace_index_entry - indexes a AUX area tracing event within a
 146  *                               perf.data file.
 147  * @file_offset: offset within the perf.data file
 148  * @sz: size of the event
 149  */
 150 struct auxtrace_index_entry {
 151         u64                     file_offset;
 152         u64                     sz;
 153 };
 154
 155 #define PERF_AUXTRACE_INDEX_ENTRY_COUNT 256
 156
 157 /**
 158  * struct auxtrace_index - index of AUX area tracing events within a perf.data
 159  *                         file.
 160  * @list: linking a number of arrays of entries
 161  * @nr: number of entries
 162  * @entries: array of entries
 163  */
 164 struct auxtrace_index {
 165         struct list_head        list;
 166         size_t                  nr;
 167         struct auxtrace_index_entry entries[PERF_AUXTRACE_INDEX_ENTRY_COUNT];
 168 };
 169
 170 /**
 171  * struct auxtrace - session callbacks to allow AUX area data decoding.
 172  * @process_event: lets the decoder see all session events
 173  * @process_auxtrace_event: process a PERF_RECORD_AUXTRACE event
 174  * @queue_data: queue an AUX sample or PERF_RECORD_AUXTRACE event for later
 175  *              processing
 176  * @dump_auxtrace_sample: dump AUX area sample data
 177  * @flush_events: process any remaining data
 178  * @free_events: free resources associated with event processing
 179  * @free: free resources associated with the session
 180  */
 181 struct auxtrace {
 182         int (*process_event)(struct perf_session *session,
 183                              union perf_event *event,
 184                              struct perf_sample *sample,
 185                              struct perf_tool *tool);
 186         int (*process_auxtrace_event)(struct perf_session *session,
 187                                       union perf_event *event,
 188                                       struct perf_tool *tool);
 189         int (*queue_data)(struct perf_session *session,
 190                           struct perf_sample *sample, union perf_event *event,
 191                           u64 data_offset);
 192         void (*dump_auxtrace_sample)(struct perf_session *session,
 193                                      struct perf_sample *sample);
 194         int (*flush_events)(struct perf_session *session,
 195                             struct perf_tool *tool);
 196         void (*free_events)(struct perf_session *session);
 197         void (*free)(struct perf_session *session);
 198         bool (*evsel_is_auxtrace)(struct perf_session *session,
 199                                   struct evsel *evsel);
 200 };
 201
 202 /**
 203  * struct auxtrace_buffer - a buffer containing AUX area tracing data.
 204  * @list: buffers are queued in a list held by struct auxtrace_queue
 205  * @size: size of the buffer in bytes
 206  * @pid: in per-thread mode, the pid this buffer is associated with
 207  * @tid: in per-thread mode, the tid this buffer is associated with
 208  * @cpu: in per-cpu mode, the cpu this buffer is associated with
 209  * @data: actual buffer data (can be null if the data has not been loaded)
 210  * @data_offset: file offset at which the buffer can be read
 211  * @mmap_addr: mmap address at which the buffer can be read
 212  * @mmap_size: size of the mmap at @mmap_addr
 213  * @data_needs_freeing: @data was malloc'd so free it when it is no longer
 214  *                      needed
 215  * @consecutive: the original data was split up and this buffer is consecutive
 216  *               to the previous buffer
 217  * @offset: offset as determined by aux_head / aux_tail members of struct
 218  *          perf_event_mmap_page
 219  * @reference: an implementation-specific reference determined when the data is
 220  *             recorded
 221  * @buffer_nr: used to number each buffer
 222  * @use_size: implementation actually only uses this number of bytes
 223  * @use_data: implementation actually only uses data starting at this address
 224  */
 225 struct auxtrace_buffer {
 226         struct list_head        list;
 227         size_t                  size;
 228         pid_t                   pid;
 229         pid_t                   tid;
 230         int                     cpu;
 231         void                    *data;
 232         off_t                   data_offset;
 233         void                    *mmap_addr;
 234         size_t                  mmap_size;
 235         bool                    data_needs_freeing;
 236         bool                    consecutive;
 237         u64                     offset;
 238         u64                     reference;
 239         u64                     buffer_nr;
 240         size_t                  use_size;
 241         void                    *use_data;
 242 };
 243
 244 /**
 245  * struct auxtrace_queue - a queue of AUX area tracing data buffers.
 246  * @head: head of buffer list
 247  * @tid: in per-thread mode, the tid this queue is associated with
 248  * @cpu: in per-cpu mode, the cpu this queue is associated with
 249  * @set: %true once this queue has been dedicated to a specific thread or cpu
 250  * @priv: implementation-specific data
 251  */
 252 struct auxtrace_queue {
 253         struct list_head        head;
 254         pid_t                   tid;
 255         int                     cpu;
 256         bool                    set;
 257         void                    *priv;
 258 };
 259
 260 /**
 261  * struct auxtrace_queues - an array of AUX area tracing queues.
 262  * @queue_array: array of queues
 263  * @nr_queues: number of queues
 264  * @new_data: set whenever new data is queued
 265  * @populated: queues have been fully populated using the auxtrace_index
 266  * @next_buffer_nr: used to number each buffer
 267  */
 268 struct auxtrace_queues {
 269         struct auxtrace_queue   *queue_array;
 270         unsigned int            nr_queues;
 271         bool                    new_data;
 272         bool                    populated;
 273         u64                     next_buffer_nr;
 274 };
 275
 276 /**
 277  * struct auxtrace_heap_item - element of struct auxtrace_heap.
 278  * @queue_nr: queue number
 279  * @ordinal: value used for sorting (lowest ordinal is top of the heap) expected
 280  *           to be a timestamp
 281  */
 282 struct auxtrace_heap_item {
 283         unsigned int            queue_nr;
 284         u64                     ordinal;
 285 };
 286
 287 /**
 288  * struct auxtrace_heap - a heap suitable for sorting AUX area tracing queues.
 289  * @heap_array: the heap
 290  * @heap_cnt: the number of elements in the heap
 291  * @heap_sz: maximum number of elements (grows as needed)
 292  */
 293 struct auxtrace_heap {
 294         struct auxtrace_heap_item       *heap_array;
 295         unsigned int            heap_cnt;
 296         unsigned int            heap_sz;
 297 };
 298
 299 /**
 300  * struct auxtrace_mmap - records an mmap of the auxtrace buffer.
 301  * @base: address of mapped area
 302  * @userpg: pointer to buffer's perf_event_mmap_page
 303  * @mask: %0 if @len is not a power of two, otherwise (@len - %1)
 304  * @len: size of mapped area
 305  * @prev: previous aux_head
 306  * @idx: index of this mmap
 307  * @tid: tid for a per-thread mmap (also set if there is only 1 tid on a per-cpu
 308  *       mmap) otherwise %0
 309  * @cpu: cpu number for a per-cpu mmap otherwise %-1
 310  */
 311 struct auxtrace_mmap {
 312         void            *base;
 313         void            *userpg;
 314         size_t          mask;
 315         size_t          len;
 316         u64             prev;
 317         int             idx;
 318         pid_t           tid;
 319         int             cpu;
 320 };
 321
 322 /**
 323  * struct auxtrace_mmap_params - parameters to set up struct auxtrace_mmap.
 324  * @mask: %0 if @len is not a power of two, otherwise (@len - %1)
 325  * @offset: file offset of mapped area
 326  * @len: size of mapped area
 327  * @prot: mmap memory protection
 328  * @idx: index of this mmap
 329  * @tid: tid for a per-thread mmap (also set if there is only 1 tid on a per-cpu
 330  *       mmap) otherwise %0
 331  * @cpu: cpu number for a per-cpu mmap otherwise %-1
 332  */
 333 struct auxtrace_mmap_params {
 334         size_t          mask;
 335         off_t           offset;
 336         size_t          len;
 337         int             prot;
 338         int             idx;
 339         pid_t           tid;
 340         int             cpu;
 341 };
 342
 343 /**
 344  * struct auxtrace_record - callbacks for recording AUX area data.
 345  * @recording_options: validate and process recording options
 346  * @info_priv_size: return the size of the private data in auxtrace_info_event
 347  * @info_fill: fill-in the private data in auxtrace_info_event
 348  * @free: free this auxtrace record structure
 349  * @snapshot_start: starting a snapshot
 350  * @snapshot_finish: finishing a snapshot
 351  * @find_snapshot: find data to snapshot within auxtrace mmap
 352  * @parse_snapshot_options: parse snapshot options
 353  * @reference: provide a 64-bit reference number for auxtrace_event
 354  * @read_finish: called after reading from an auxtrace mmap
 355  * @alignment: alignment (if any) for AUX area data
 356  * @default_aux_sample_size: default sample size for --aux sample option
 357  * @pmu: associated pmu
 358  * @evlist: selected events list
 359  */
 360 struct auxtrace_record {
 361         int (*recording_options)(struct auxtrace_record *itr,
 362                                  struct evlist *evlist,
 363                                  struct record_opts *opts);
 364         size_t (*info_priv_size)(struct auxtrace_record *itr,
 365                                  struct evlist *evlist);
 366         int (*info_fill)(struct auxtrace_record *itr,
 367                          struct perf_session *session,
 368                          struct perf_record_auxtrace_info *auxtrace_info,
 369                          size_t priv_size);
 370         void (*free)(struct auxtrace_record *itr);
 371         int (*snapshot_start)(struct auxtrace_record *itr);
 372         int (*snapshot_finish)(struct auxtrace_record *itr);
 373         int (*find_snapshot)(struct auxtrace_record *itr, int idx,
 374                              struct auxtrace_mmap *mm, unsigned char *data,
 375                              u64 *head, u64 *old);
 376         int (*parse_snapshot_options)(struct auxtrace_record *itr,
 377                                       struct record_opts *opts,
 378                                       const char *str);
 379         u64 (*reference)(struct auxtrace_record *itr);
 380         int (*read_finish)(struct auxtrace_record *itr, int idx);
 381         unsigned int alignment;
 382         unsigned int default_aux_sample_size;
 383         struct perf_pmu *pmu;
 384         struct evlist *evlist;
 385 };
 386
 387 /**
 388  * struct addr_filter - address filter.
 389  * @list: list node
 390  * @range: true if it is a range filter
 391  * @start: true if action is 'filter' or 'start'
 392  * @action: 'filter', 'start' or 'stop' ('tracestop' is accepted but converted
 393  *          to 'stop')
 394  * @sym_from: symbol name for the filter address
 395  * @sym_to: symbol name that determines the filter size
 396  * @sym_from_idx: selects n'th from symbols with the same name (0 means global
 397  *                and less than 0 means symbol must be unique)
 398  * @sym_to_idx: same as @sym_from_idx but for @sym_to
 399  * @addr: filter address
 400  * @size: filter region size (for range filters)
 401  * @filename: DSO file name or NULL for the kernel
 402  * @str: allocated string that contains the other string members
 403  */
 404 struct addr_filter {
 405         struct list_head        list;
 406         bool                    range;
 407         bool                    start;
 408         const char              *action;
 409         const char              *sym_from;
 410         const char              *sym_to;
 411         int                     sym_from_idx;
 412         int                     sym_to_idx;
 413         u64                     addr;
 414         u64                     size;
 415         const char              *filename;
 416         char                    *str;
 417 };
 418
 419 /**
 420  * struct addr_filters - list of address filters.
 421  * @head: list of address filters
 422  * @cnt: number of address filters
 423  */
 424 struct addr_filters {
 425         struct list_head        head;
 426         int                     cnt;
 427 };
 428
 429 struct auxtrace_cache;
 430
 431 #ifdef HAVE_AUXTRACE_SUPPORT
 432
 433 /*
 434  * In snapshot mode the mmapped page is read-only which makes using
 435  * __sync_val_compare_and_swap() problematic.  However, snapshot mode expects
 436  * the buffer is not updated while the snapshot is made (e.g. Intel PT disables
 437  * the event) so there is not a race anyway.
 438  */
 439 static inline u64 auxtrace_mmap__read_snapshot_head(struct auxtrace_mmap *mm)
 440 {
 441         struct perf_event_mmap_page *pc = mm->userpg;
 442         u64 head = READ_ONCE(pc->aux_head);
 443
 444         /* Ensure all reads are done after we read the head */
 445         rmb();
 446         return head;
 447 }
 448
 449 static inline u64 auxtrace_mmap__read_head(struct auxtrace_mmap *mm)
 450 {
 451         struct perf_event_mmap_page *pc = mm->userpg;
 452 #if BITS_PER_LONG == 64 || !defined(HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT)
 453         u64 head = READ_ONCE(pc->aux_head);
 454 #else
 455         u64 head = __sync_val_compare_and_swap(&pc->aux_head, 0, 0);
 456 #endif
 457
 458         /* Ensure all reads are done after we read the head */
 459         rmb();
 460         return head;
 461 }
 462
 463 static inline void auxtrace_mmap__write_tail(struct auxtrace_mmap *mm, u64 tail)
 464 {
 465         struct perf_event_mmap_page *pc = mm->userpg;
 466 #if BITS_PER_LONG != 64 && defined(HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT)
 467         u64 old_tail;
 468 #endif
 469
 470         /* Ensure all reads are done before we write the tail out */
 471         mb();
 472 #if BITS_PER_LONG == 64 || !defined(HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT)
 473         pc->aux_tail = tail;
 474 #else
 475         do {
 476                 old_tail = __sync_val_compare_and_swap(&pc->aux_tail, 0, 0);
 477         } while (!__sync_bool_compare_and_swap(&pc->aux_tail, old_tail, tail));
 478 #endif
 479 }
 480
 481 int auxtrace_mmap__mmap(struct auxtrace_mmap *mm,
 482                         struct auxtrace_mmap_params *mp,
 483                         void *userpg, int fd);
 484 void auxtrace_mmap__munmap(struct auxtrace_mmap *mm);
 485 void auxtrace_mmap_params__init(struct auxtrace_mmap_params *mp,
 486                                 off_t auxtrace_offset,
 487                                 unsigned int auxtrace_pages,
 488                                 bool auxtrace_overwrite);
 489 void auxtrace_mmap_params__set_idx(struct auxtrace_mmap_params *mp,
 490                                    struct evlist *evlist, int idx,
 491                                    bool per_cpu);
 492
 493 typedef int (*process_auxtrace_t)(struct perf_tool *tool,
 494                                   struct mmap *map,
 495                                   union perf_event *event, void *data1,
 496                                   size_t len1, void *data2, size_t len2);
 497
 498 int auxtrace_mmap__read(struct mmap *map, struct auxtrace_record *itr,
 499                         struct perf_tool *tool, process_auxtrace_t fn);
 500
 501 int auxtrace_mmap__read_snapshot(struct mmap *map,
 502                                  struct auxtrace_record *itr,
 503                                  struct perf_tool *tool, process_auxtrace_t fn,
 504                                  size_t snapshot_size);
 505
 506 int auxtrace_queues__init(struct auxtrace_queues *queues);
 507 int auxtrace_queues__add_event(struct auxtrace_queues *queues,
 508                                struct perf_session *session,
 509                                union perf_event *event, off_t data_offset,
 510                                struct auxtrace_buffer **buffer_ptr);
 511 struct auxtrace_queue *
 512 auxtrace_queues__sample_queue(struct auxtrace_queues *queues,
 513                               struct perf_sample *sample,
 514                               struct perf_session *session);
 515 int auxtrace_queues__add_sample(struct auxtrace_queues *queues,
 516                                 struct perf_session *session,
 517                                 struct perf_sample *sample, u64 data_offset,
 518                                 u64 reference);
 519 void auxtrace_queues__free(struct auxtrace_queues *queues);
 520 int auxtrace_queues__process_index(struct auxtrace_queues *queues,
 521                                    struct perf_session *session);
 522 int auxtrace_queue_data(struct perf_session *session, bool samples,
 523                         bool events);
 524 struct auxtrace_buffer *auxtrace_buffer__next(struct auxtrace_queue *queue,
 525                                               struct auxtrace_buffer *buffer);
 526 void *auxtrace_buffer__get_data(struct auxtrace_buffer *buffer, int fd);
 527 void auxtrace_buffer__put_data(struct auxtrace_buffer *buffer);
 528 void auxtrace_buffer__drop_data(struct auxtrace_buffer *buffer);
 529 void auxtrace_buffer__free(struct auxtrace_buffer *buffer);
 530
 531 int auxtrace_heap__add(struct auxtrace_heap *heap, unsigned int queue_nr,
 532                        u64 ordinal);
 533 void auxtrace_heap__pop(struct auxtrace_heap *heap);
 534 void auxtrace_heap__free(struct auxtrace_heap *heap);
 535
 536 struct auxtrace_cache_entry {
 537         struct hlist_node hash;
 538         u32 key;
 539 };
 540
 541 struct auxtrace_cache *auxtrace_cache__new(unsigned int bits, size_t entry_size,
 542                                            unsigned int limit_percent);
 543 void auxtrace_cache__free(struct auxtrace_cache *auxtrace_cache);
 544 void *auxtrace_cache__alloc_entry(struct auxtrace_cache *c);
 545 void auxtrace_cache__free_entry(struct auxtrace_cache *c, void *entry);
 546 int auxtrace_cache__add(struct auxtrace_cache *c, u32 key,
 547                         struct auxtrace_cache_entry *entry);
 548 void auxtrace_cache__remove(struct auxtrace_cache *c, u32 key);
 549 void *auxtrace_cache__lookup(struct auxtrace_cache *c, u32 key);
 550
 551 struct auxtrace_record *auxtrace_record__init(struct evlist *evlist,
 552                                               int *err);
 553
 554 int auxtrace_parse_snapshot_options(struct auxtrace_record *itr,
 555                                     struct record_opts *opts,
 556                                     const char *str);
 557 int auxtrace_parse_sample_options(struct auxtrace_record *itr,
 558                                   struct evlist *evlist,
 559                                   struct record_opts *opts, const char *str);
 560 int auxtrace_record__options(struct auxtrace_record *itr,
 561                              struct evlist *evlist,
 562                              struct record_opts *opts);
 563 size_t auxtrace_record__info_priv_size(struct auxtrace_record *itr,
 564                                        struct evlist *evlist);
 565 int auxtrace_record__info_fill(struct auxtrace_record *itr,
 566                                struct perf_session *session,
 567                                struct perf_record_auxtrace_info *auxtrace_info,
 568                                size_t priv_size);
 569 void auxtrace_record__free(struct auxtrace_record *itr);
 570 int auxtrace_record__snapshot_start(struct auxtrace_record *itr);
 571 int auxtrace_record__snapshot_finish(struct auxtrace_record *itr, bool on_exit);
 572 int auxtrace_record__find_snapshot(struct auxtrace_record *itr, int idx,
 573                                    struct auxtrace_mmap *mm,
 574                                    unsigned char *data, u64 *head, u64 *old);
 575 u64 auxtrace_record__reference(struct auxtrace_record *itr);
 576 int auxtrace_record__read_finish(struct auxtrace_record *itr, int idx);
 577
 578 int auxtrace_index__auxtrace_event(struct list_head *head, union perf_event *event,
 579                                    off_t file_offset);
 580 int auxtrace_index__write(int fd, struct list_head *head);
 581 int auxtrace_index__process(int fd, u64 size, struct perf_session *session,
 582                             bool needs_swap);
 583 void auxtrace_index__free(struct list_head *head);
 584
 585 void auxtrace_synth_error(struct perf_record_auxtrace_error *auxtrace_error, int type,
 586                           int code, int cpu, pid_t pid, pid_t tid, u64 ip,
 587                           const char *msg, u64 timestamp);
 588
 589 int perf_event__process_auxtrace_info(struct perf_session *session,
 590                                       union perf_event *event);
 591 s64 perf_event__process_auxtrace(struct perf_session *session,
 592                                  union perf_event *event);
 593 int perf_event__process_auxtrace_error(struct perf_session *session,
 594                                        union perf_event *event);
 595 int itrace_parse_synth_opts(const struct option *opt, const char *str,
 596                             int unset);
 597 void itrace_synth_opts__set_default(struct itrace_synth_opts *synth_opts,
 598                                     bool no_sample);
 599
 600 size_t perf_event__fprintf_auxtrace_error(union perf_event *event, FILE *fp);
 601 void perf_session__auxtrace_error_inc(struct perf_session *session,
 602                                       union perf_event *event);
 603 void events_stats__auxtrace_error_warn(const struct events_stats *stats);
 604
 605 void addr_filters__init(struct addr_filters *filts);
 606 void addr_filters__exit(struct addr_filters *filts);
 607 int addr_filters__parse_bare_filter(struct addr_filters *filts,
 608                                     const char *filter);
 609 int auxtrace_parse_filters(struct evlist *evlist);
 610
 611 int auxtrace__process_event(struct perf_session *session, union perf_event *event,
 612                             struct perf_sample *sample, struct perf_tool *tool);
 613 void auxtrace__dump_auxtrace_sample(struct perf_session *session,
 614                                     struct perf_sample *sample);
 615 int auxtrace__flush_events(struct perf_session *session, struct perf_tool *tool);
 616 void auxtrace__free_events(struct perf_session *session);
 617 void auxtrace__free(struct perf_session *session);
 618 bool auxtrace__evsel_is_auxtrace(struct perf_session *session,
 619                                  struct evsel *evsel);
 620
 621 #define ITRACE_HELP \
 622 "                               i[period]:              synthesize instructions events\n" \
 623 "                               b:                      synthesize branches events (branch misses for Arm SPE)\n" \
 624 "                               c:                      synthesize branches events (calls only)\n"      \
 625 "                               r:                      synthesize branches events (returns only)\n" \
 626 "                               x:                      synthesize transactions events\n"               \
 627 "                               w:                      synthesize ptwrite events\n"            \
 628 "                               p:                      synthesize power events\n"                      \
 629 "                               o:                      synthesize other events recorded due to the use\n" \
 630 "                                                       of aux-output (refer to perf record)\n" \
 631 "                               e[flags]:               synthesize error events\n" \
 632 "                                                       each flag must be preceded by + or -\n" \
 633 "                                                       error flags are: o (overflow)\n" \
 634 "                                                                        l (data lost)\n" \
 635 "                               d[flags]:               create a debug log\n" \
 636 "                                                       each flag must be preceded by + or -\n" \
 637 "                                                       log flags are: a (all perf events)\n" \
 638 "                               f:                      synthesize first level cache events\n" \
 639 "                               m:                      synthesize last level cache events\n" \
 640 "                               t:                      synthesize TLB events\n" \
 641 "                               a:                      synthesize remote access events\n" \
 642 "                               g[len]:                 synthesize a call chain (use with i or x)\n" \
 643 "                               G[len]:                 synthesize a call chain on existing event records\n" \
 644 "                               l[len]:                 synthesize last branch entries (use with i or x)\n" \
 645 "                               L[len]:                 synthesize last branch entries on existing event records\n" \
 646 "                               sNUMBER:                skip initial number of events\n"                \
 647 "                               q:                      quicker (less detailed) decoding\n" \
 648 "                               PERIOD[ns|us|ms|i|t]:   specify period to sample stream\n" \
 649 "                               concatenate multiple options. Default is ibxwpe or cewp\n"
 650
 651 static inline
 652 void itrace_synth_opts__set_time_range(struct itrace_synth_opts *opts,
 653                                        struct perf_time_interval *ptime_range,
 654                                        int range_num)
 655 {
 656         opts->ptime_range = ptime_range;
 657         opts->range_num = range_num;
 658 }
 659
 660 static inline
 661 void itrace_synth_opts__clear_time_range(struct itrace_synth_opts *opts)
 662 {
 663         opts->ptime_range = NULL;
 664         opts->range_num = 0;
 665 }
 666
 667 #else
 668 #include "debug.h"
 669
 670 static inline struct auxtrace_record *
 671 auxtrace_record__init(struct evlist *evlist __maybe_unused,
 672                       int *err)
 673 {
 674         *err = 0;
 675         return NULL;
 676 }
 677
 678 static inline
 679 void auxtrace_record__free(struct auxtrace_record *itr __maybe_unused)
 680 {
 681 }
 682
 683 static inline
 684 int auxtrace_record__options(struct auxtrace_record *itr __maybe_unused,
 685                              struct evlist *evlist __maybe_unused,
 686                              struct record_opts *opts __maybe_unused)
 687 {
 688         return 0;
 689 }
 690
 691 #define perf_event__process_auxtrace_info               0
 692 #define perf_event__process_auxtrace                    0
 693 #define perf_event__process_auxtrace_error              0
 694
 695 static inline
 696 void perf_session__auxtrace_error_inc(struct perf_session *session
 697                                       __maybe_unused,
 698                                       union perf_event *event
 699                                       __maybe_unused)
 700 {
 701 }
 702
 703 static inline
 704 void events_stats__auxtrace_error_warn(const struct events_stats *stats
 705                                        __maybe_unused)
 706 {
 707 }
 708
 709 static inline
 710 int itrace_parse_synth_opts(const struct option *opt __maybe_unused,
 711                             const char *str __maybe_unused,
 712                             int unset __maybe_unused)
 713 {
 714         pr_err("AUX area tracing not supported\n");
 715         return -EINVAL;
 716 }
 717
 718 static inline
 719 int auxtrace_parse_snapshot_options(struct auxtrace_record *itr __maybe_unused,
 720                                     struct record_opts *opts __maybe_unused,
 721                                     const char *str)
 722 {
 723         if (!str)
 724                 return 0;
 725         pr_err("AUX area tracing not supported\n");
 726         return -EINVAL;
 727 }
 728
 729 static inline
 730 int auxtrace_parse_sample_options(struct auxtrace_record *itr __maybe_unused,
 731                                   struct evlist *evlist __maybe_unused,
 732                                   struct record_opts *opts __maybe_unused,
 733                                   const char *str)
 734 {
 735         if (!str)
 736                 return 0;
 737         pr_err("AUX area tracing not supported\n");
 738         return -EINVAL;
 739 }
 740
 741 static inline
 742 int auxtrace__process_event(struct perf_session *session __maybe_unused,
 743                             union perf_event *event __maybe_unused,
 744                             struct perf_sample *sample __maybe_unused,
 745                             struct perf_tool *tool __maybe_unused)
 746 {
 747         return 0;
 748 }
 749
 750 static inline
 751 void auxtrace__dump_auxtrace_sample(struct perf_session *session __maybe_unused,
 752                                     struct perf_sample *sample __maybe_unused)
 753 {
 754 }
 755
 756 static inline
 757 int auxtrace__flush_events(struct perf_session *session __maybe_unused,
 758                            struct perf_tool *tool __maybe_unused)
 759 {
 760         return 0;
 761 }
 762
 763 static inline
 764 void auxtrace__free_events(struct perf_session *session __maybe_unused)
 765 {
 766 }
 767
 768 static inline
 769 void auxtrace_cache__free(struct auxtrace_cache *auxtrace_cache __maybe_unused)
 770 {
 771 }
 772
 773 static inline
 774 void auxtrace__free(struct perf_session *session __maybe_unused)
 775 {
 776 }
 777
 778 static inline
 779 int auxtrace_index__write(int fd __maybe_unused,
 780                           struct list_head *head __maybe_unused)
 781 {
 782         return -EINVAL;
 783 }
 784
 785 static inline
 786 int auxtrace_index__process(int fd __maybe_unused,
 787                             u64 size __maybe_unused,
 788                             struct perf_session *session __maybe_unused,
 789                             bool needs_swap __maybe_unused)
 790 {
 791         return -EINVAL;
 792 }
 793
 794 static inline
 795 void auxtrace_index__free(struct list_head *head __maybe_unused)
 796 {
 797 }
 798
 799 static inline
 800 bool auxtrace__evsel_is_auxtrace(struct perf_session *session __maybe_unused,
 801                                  struct evsel *evsel __maybe_unused)
 802 {
 803         return false;
 804 }
 805
 806 static inline
 807 int auxtrace_parse_filters(struct evlist *evlist __maybe_unused)
 808 {
 809         return 0;
 810 }
 811
 812 int auxtrace_mmap__mmap(struct auxtrace_mmap *mm,
 813                         struct auxtrace_mmap_params *mp,
 814                         void *userpg, int fd);
 815 void auxtrace_mmap__munmap(struct auxtrace_mmap *mm);
 816 void auxtrace_mmap_params__init(struct auxtrace_mmap_params *mp,
 817                                 off_t auxtrace_offset,
 818                                 unsigned int auxtrace_pages,
 819                                 bool auxtrace_overwrite);
 820 void auxtrace_mmap_params__set_idx(struct auxtrace_mmap_params *mp,
 821                                    struct evlist *evlist, int idx,
 822                                    bool per_cpu);
 823
 824 #define ITRACE_HELP ""
 825
 826 static inline
 827 void itrace_synth_opts__set_time_range(struct itrace_synth_opts *opts
 828                                        __maybe_unused,
 829                                        struct perf_time_interval *ptime_range
 830                                        __maybe_unused,
 831                                        int range_num __maybe_unused)
 832 {
 833 }
 834
 835 static inline
 836 void itrace_synth_opts__clear_time_range(struct itrace_synth_opts *opts
 837                                          __maybe_unused)
 838 {
 839 }
 840
 841 #endif
 842
 843 #endif