blob: d273bb47b3e3f34838693d425ad3fe84dbfe955d [file] [log] [blame]
rjw1f884582022-01-06 17:20:42 +08001/*
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
32union perf_event;
33struct perf_session;
34struct perf_evlist;
35struct perf_tool;
36struct option;
37struct record_opts;
38struct auxtrace_info_event;
39struct events_stats;
40
41/* Auxtrace records must have the same alignment as perf event records */
42#define PERF_AUXTRACE_RECORD_ALIGNMENT 8
43
44enum auxtrace_type {
45 PERF_AUXTRACE_UNKNOWN,
46 PERF_AUXTRACE_INTEL_PT,
47 PERF_AUXTRACE_INTEL_BTS,
48 PERF_AUXTRACE_CS_ETM,
49};
50
51enum itrace_period_type {
52 PERF_ITRACE_PERIOD_INSTRUCTIONS,
53 PERF_ITRACE_PERIOD_TICKS,
54 PERF_ITRACE_PERIOD_NANOSECS,
55};
56
57/**
58 * struct itrace_synth_opts - AUX area tracing synthesis options.
59 * @set: indicates whether or not options have been set
60 * @inject: indicates the event (not just the sample) must be fully synthesized
61 * because 'perf inject' will write it out
62 * @instructions: whether to synthesize 'instructions' events
63 * @branches: whether to synthesize 'branches' events
64 * @transactions: whether to synthesize events for transactions
65 * @ptwrites: whether to synthesize events for ptwrites
66 * @pwr_events: whether to synthesize power events
67 * @errors: whether to synthesize decoder error events
68 * @dont_decode: whether to skip decoding entirely
69 * @log: write a decoding log
70 * @calls: limit branch samples to calls (can be combined with @returns)
71 * @returns: limit branch samples to returns (can be combined with @calls)
72 * @callchain: add callchain to 'instructions' events
73 * @thread_stack: feed branches to the thread_stack
74 * @last_branch: add branch context to 'instruction' events
75 * @callchain_sz: maximum callchain size
76 * @last_branch_sz: branch context size
77 * @period: 'instructions' events period
78 * @period_type: 'instructions' events period type
79 * @initial_skip: skip N events at the beginning.
80 * @cpu_bitmap: CPUs for which to synthesize events, or NULL for all
81 */
82struct itrace_synth_opts {
83 bool set;
84 bool inject;
85 bool instructions;
86 bool branches;
87 bool transactions;
88 bool ptwrites;
89 bool pwr_events;
90 bool errors;
91 bool dont_decode;
92 bool log;
93 bool calls;
94 bool returns;
95 bool callchain;
96 bool thread_stack;
97 bool last_branch;
98 unsigned int callchain_sz;
99 unsigned int last_branch_sz;
100 unsigned long long period;
101 enum itrace_period_type period_type;
102 unsigned long initial_skip;
103 unsigned long *cpu_bitmap;
104};
105
106/**
107 * struct auxtrace_index_entry - indexes a AUX area tracing event within a
108 * perf.data file.
109 * @file_offset: offset within the perf.data file
110 * @sz: size of the event
111 */
112struct auxtrace_index_entry {
113 u64 file_offset;
114 u64 sz;
115};
116
117#define PERF_AUXTRACE_INDEX_ENTRY_COUNT 256
118
119/**
120 * struct auxtrace_index - index of AUX area tracing events within a perf.data
121 * file.
122 * @list: linking a number of arrays of entries
123 * @nr: number of entries
124 * @entries: array of entries
125 */
126struct auxtrace_index {
127 struct list_head list;
128 size_t nr;
129 struct auxtrace_index_entry entries[PERF_AUXTRACE_INDEX_ENTRY_COUNT];
130};
131
132/**
133 * struct auxtrace - session callbacks to allow AUX area data decoding.
134 * @process_event: lets the decoder see all session events
135 * @flush_events: process any remaining data
136 * @free_events: free resources associated with event processing
137 * @free: free resources associated with the session
138 */
139struct auxtrace {
140 int (*process_event)(struct perf_session *session,
141 union perf_event *event,
142 struct perf_sample *sample,
143 struct perf_tool *tool);
144 int (*process_auxtrace_event)(struct perf_session *session,
145 union perf_event *event,
146 struct perf_tool *tool);
147 int (*flush_events)(struct perf_session *session,
148 struct perf_tool *tool);
149 void (*free_events)(struct perf_session *session);
150 void (*free)(struct perf_session *session);
151};
152
153/**
154 * struct auxtrace_buffer - a buffer containing AUX area tracing data.
155 * @list: buffers are queued in a list held by struct auxtrace_queue
156 * @size: size of the buffer in bytes
157 * @pid: in per-thread mode, the pid this buffer is associated with
158 * @tid: in per-thread mode, the tid this buffer is associated with
159 * @cpu: in per-cpu mode, the cpu this buffer is associated with
160 * @data: actual buffer data (can be null if the data has not been loaded)
161 * @data_offset: file offset at which the buffer can be read
162 * @mmap_addr: mmap address at which the buffer can be read
163 * @mmap_size: size of the mmap at @mmap_addr
164 * @data_needs_freeing: @data was malloc'd so free it when it is no longer
165 * needed
166 * @consecutive: the original data was split up and this buffer is consecutive
167 * to the previous buffer
168 * @offset: offset as determined by aux_head / aux_tail members of struct
169 * perf_event_mmap_page
170 * @reference: an implementation-specific reference determined when the data is
171 * recorded
172 * @buffer_nr: used to number each buffer
173 * @use_size: implementation actually only uses this number of bytes
174 * @use_data: implementation actually only uses data starting at this address
175 */
176struct auxtrace_buffer {
177 struct list_head list;
178 size_t size;
179 pid_t pid;
180 pid_t tid;
181 int cpu;
182 void *data;
183 off_t data_offset;
184 void *mmap_addr;
185 size_t mmap_size;
186 bool data_needs_freeing;
187 bool consecutive;
188 u64 offset;
189 u64 reference;
190 u64 buffer_nr;
191 size_t use_size;
192 void *use_data;
193};
194
195/**
196 * struct auxtrace_queue - a queue of AUX area tracing data buffers.
197 * @head: head of buffer list
198 * @tid: in per-thread mode, the tid this queue is associated with
199 * @cpu: in per-cpu mode, the cpu this queue is associated with
200 * @set: %true once this queue has been dedicated to a specific thread or cpu
201 * @priv: implementation-specific data
202 */
203struct auxtrace_queue {
204 struct list_head head;
205 pid_t tid;
206 int cpu;
207 bool set;
208 void *priv;
209};
210
211/**
212 * struct auxtrace_queues - an array of AUX area tracing queues.
213 * @queue_array: array of queues
214 * @nr_queues: number of queues
215 * @new_data: set whenever new data is queued
216 * @populated: queues have been fully populated using the auxtrace_index
217 * @next_buffer_nr: used to number each buffer
218 */
219struct auxtrace_queues {
220 struct auxtrace_queue *queue_array;
221 unsigned int nr_queues;
222 bool new_data;
223 bool populated;
224 u64 next_buffer_nr;
225};
226
227/**
228 * struct auxtrace_heap_item - element of struct auxtrace_heap.
229 * @queue_nr: queue number
230 * @ordinal: value used for sorting (lowest ordinal is top of the heap) expected
231 * to be a timestamp
232 */
233struct auxtrace_heap_item {
234 unsigned int queue_nr;
235 u64 ordinal;
236};
237
238/**
239 * struct auxtrace_heap - a heap suitable for sorting AUX area tracing queues.
240 * @heap_array: the heap
241 * @heap_cnt: the number of elements in the heap
242 * @heap_sz: maximum number of elements (grows as needed)
243 */
244struct auxtrace_heap {
245 struct auxtrace_heap_item *heap_array;
246 unsigned int heap_cnt;
247 unsigned int heap_sz;
248};
249
250/**
251 * struct auxtrace_mmap - records an mmap of the auxtrace buffer.
252 * @base: address of mapped area
253 * @userpg: pointer to buffer's perf_event_mmap_page
254 * @mask: %0 if @len is not a power of two, otherwise (@len - %1)
255 * @len: size of mapped area
256 * @prev: previous aux_head
257 * @idx: index of this mmap
258 * @tid: tid for a per-thread mmap (also set if there is only 1 tid on a per-cpu
259 * mmap) otherwise %0
260 * @cpu: cpu number for a per-cpu mmap otherwise %-1
261 */
262struct auxtrace_mmap {
263 void *base;
264 void *userpg;
265 size_t mask;
266 size_t len;
267 u64 prev;
268 int idx;
269 pid_t tid;
270 int cpu;
271};
272
273/**
274 * struct auxtrace_mmap_params - parameters to set up struct auxtrace_mmap.
275 * @mask: %0 if @len is not a power of two, otherwise (@len - %1)
276 * @offset: file offset of mapped area
277 * @len: size of mapped area
278 * @prot: mmap memory protection
279 * @idx: index of this mmap
280 * @tid: tid for a per-thread mmap (also set if there is only 1 tid on a per-cpu
281 * mmap) otherwise %0
282 * @cpu: cpu number for a per-cpu mmap otherwise %-1
283 */
284struct auxtrace_mmap_params {
285 size_t mask;
286 off_t offset;
287 size_t len;
288 int prot;
289 int idx;
290 pid_t tid;
291 int cpu;
292};
293
294/**
295 * struct auxtrace_record - callbacks for recording AUX area data.
296 * @recording_options: validate and process recording options
297 * @info_priv_size: return the size of the private data in auxtrace_info_event
298 * @info_fill: fill-in the private data in auxtrace_info_event
299 * @free: free this auxtrace record structure
300 * @snapshot_start: starting a snapshot
301 * @snapshot_finish: finishing a snapshot
302 * @find_snapshot: find data to snapshot within auxtrace mmap
303 * @parse_snapshot_options: parse snapshot options
304 * @reference: provide a 64-bit reference number for auxtrace_event
305 * @read_finish: called after reading from an auxtrace mmap
306 */
307struct auxtrace_record {
308 int (*recording_options)(struct auxtrace_record *itr,
309 struct perf_evlist *evlist,
310 struct record_opts *opts);
311 size_t (*info_priv_size)(struct auxtrace_record *itr,
312 struct perf_evlist *evlist);
313 int (*info_fill)(struct auxtrace_record *itr,
314 struct perf_session *session,
315 struct auxtrace_info_event *auxtrace_info,
316 size_t priv_size);
317 void (*free)(struct auxtrace_record *itr);
318 int (*snapshot_start)(struct auxtrace_record *itr);
319 int (*snapshot_finish)(struct auxtrace_record *itr);
320 int (*find_snapshot)(struct auxtrace_record *itr, int idx,
321 struct auxtrace_mmap *mm, unsigned char *data,
322 u64 *head, u64 *old);
323 int (*parse_snapshot_options)(struct auxtrace_record *itr,
324 struct record_opts *opts,
325 const char *str);
326 u64 (*reference)(struct auxtrace_record *itr);
327 int (*read_finish)(struct auxtrace_record *itr, int idx);
328 unsigned int alignment;
329};
330
331/**
332 * struct addr_filter - address filter.
333 * @list: list node
334 * @range: true if it is a range filter
335 * @start: true if action is 'filter' or 'start'
336 * @action: 'filter', 'start' or 'stop' ('tracestop' is accepted but converted
337 * to 'stop')
338 * @sym_from: symbol name for the filter address
339 * @sym_to: symbol name that determines the filter size
340 * @sym_from_idx: selects n'th from symbols with the same name (0 means global
341 * and less than 0 means symbol must be unique)
342 * @sym_to_idx: same as @sym_from_idx but for @sym_to
343 * @addr: filter address
344 * @size: filter region size (for range filters)
345 * @filename: DSO file name or NULL for the kernel
346 * @str: allocated string that contains the other string members
347 */
348struct addr_filter {
349 struct list_head list;
350 bool range;
351 bool start;
352 const char *action;
353 const char *sym_from;
354 const char *sym_to;
355 int sym_from_idx;
356 int sym_to_idx;
357 u64 addr;
358 u64 size;
359 const char *filename;
360 char *str;
361};
362
363/**
364 * struct addr_filters - list of address filters.
365 * @head: list of address filters
366 * @cnt: number of address filters
367 */
368struct addr_filters {
369 struct list_head head;
370 int cnt;
371};
372
373#ifdef HAVE_AUXTRACE_SUPPORT
374
375/*
376 * In snapshot mode the mmapped page is read-only which makes using
377 * __sync_val_compare_and_swap() problematic. However, snapshot mode expects
378 * the buffer is not updated while the snapshot is made (e.g. Intel PT disables
379 * the event) so there is not a race anyway.
380 */
381static inline u64 auxtrace_mmap__read_snapshot_head(struct auxtrace_mmap *mm)
382{
383 struct perf_event_mmap_page *pc = mm->userpg;
384 u64 head = ACCESS_ONCE(pc->aux_head);
385
386 /* Ensure all reads are done after we read the head */
387 rmb();
388 return head;
389}
390
391static inline u64 auxtrace_mmap__read_head(struct auxtrace_mmap *mm)
392{
393 struct perf_event_mmap_page *pc = mm->userpg;
394#if BITS_PER_LONG == 64 || !defined(HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT)
395 u64 head = ACCESS_ONCE(pc->aux_head);
396#else
397 u64 head = __sync_val_compare_and_swap(&pc->aux_head, 0, 0);
398#endif
399
400 /* Ensure all reads are done after we read the head */
401 rmb();
402 return head;
403}
404
405static inline void auxtrace_mmap__write_tail(struct auxtrace_mmap *mm, u64 tail)
406{
407 struct perf_event_mmap_page *pc = mm->userpg;
408#if BITS_PER_LONG != 64 && defined(HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT)
409 u64 old_tail;
410#endif
411
412 /* Ensure all reads are done before we write the tail out */
413 mb();
414#if BITS_PER_LONG == 64 || !defined(HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT)
415 pc->aux_tail = tail;
416#else
417 do {
418 old_tail = __sync_val_compare_and_swap(&pc->aux_tail, 0, 0);
419 } while (!__sync_bool_compare_and_swap(&pc->aux_tail, old_tail, tail));
420#endif
421}
422
423int auxtrace_mmap__mmap(struct auxtrace_mmap *mm,
424 struct auxtrace_mmap_params *mp,
425 void *userpg, int fd);
426void auxtrace_mmap__munmap(struct auxtrace_mmap *mm);
427void auxtrace_mmap_params__init(struct auxtrace_mmap_params *mp,
428 off_t auxtrace_offset,
429 unsigned int auxtrace_pages,
430 bool auxtrace_overwrite);
431void auxtrace_mmap_params__set_idx(struct auxtrace_mmap_params *mp,
432 struct perf_evlist *evlist, int idx,
433 bool per_cpu);
434
435typedef int (*process_auxtrace_t)(struct perf_tool *tool,
436 union perf_event *event, void *data1,
437 size_t len1, void *data2, size_t len2);
438
439int auxtrace_mmap__read(struct auxtrace_mmap *mm, struct auxtrace_record *itr,
440 struct perf_tool *tool, process_auxtrace_t fn);
441
442int auxtrace_mmap__read_snapshot(struct auxtrace_mmap *mm,
443 struct auxtrace_record *itr,
444 struct perf_tool *tool, process_auxtrace_t fn,
445 size_t snapshot_size);
446
447int auxtrace_queues__init(struct auxtrace_queues *queues);
448int auxtrace_queues__add_event(struct auxtrace_queues *queues,
449 struct perf_session *session,
450 union perf_event *event, off_t data_offset,
451 struct auxtrace_buffer **buffer_ptr);
452void auxtrace_queues__free(struct auxtrace_queues *queues);
453int auxtrace_queues__process_index(struct auxtrace_queues *queues,
454 struct perf_session *session);
455struct auxtrace_buffer *auxtrace_buffer__next(struct auxtrace_queue *queue,
456 struct auxtrace_buffer *buffer);
457void *auxtrace_buffer__get_data(struct auxtrace_buffer *buffer, int fd);
458void auxtrace_buffer__put_data(struct auxtrace_buffer *buffer);
459void auxtrace_buffer__drop_data(struct auxtrace_buffer *buffer);
460void auxtrace_buffer__free(struct auxtrace_buffer *buffer);
461
462int auxtrace_heap__add(struct auxtrace_heap *heap, unsigned int queue_nr,
463 u64 ordinal);
464void auxtrace_heap__pop(struct auxtrace_heap *heap);
465void auxtrace_heap__free(struct auxtrace_heap *heap);
466
467struct auxtrace_cache_entry {
468 struct hlist_node hash;
469 u32 key;
470};
471
472struct auxtrace_cache *auxtrace_cache__new(unsigned int bits, size_t entry_size,
473 unsigned int limit_percent);
474void auxtrace_cache__free(struct auxtrace_cache *auxtrace_cache);
475void *auxtrace_cache__alloc_entry(struct auxtrace_cache *c);
476void auxtrace_cache__free_entry(struct auxtrace_cache *c, void *entry);
477int auxtrace_cache__add(struct auxtrace_cache *c, u32 key,
478 struct auxtrace_cache_entry *entry);
479void *auxtrace_cache__lookup(struct auxtrace_cache *c, u32 key);
480
481struct auxtrace_record *auxtrace_record__init(struct perf_evlist *evlist,
482 int *err);
483
484int auxtrace_parse_snapshot_options(struct auxtrace_record *itr,
485 struct record_opts *opts,
486 const char *str);
487int auxtrace_record__options(struct auxtrace_record *itr,
488 struct perf_evlist *evlist,
489 struct record_opts *opts);
490size_t auxtrace_record__info_priv_size(struct auxtrace_record *itr,
491 struct perf_evlist *evlist);
492int auxtrace_record__info_fill(struct auxtrace_record *itr,
493 struct perf_session *session,
494 struct auxtrace_info_event *auxtrace_info,
495 size_t priv_size);
496void auxtrace_record__free(struct auxtrace_record *itr);
497int auxtrace_record__snapshot_start(struct auxtrace_record *itr);
498int auxtrace_record__snapshot_finish(struct auxtrace_record *itr);
499int auxtrace_record__find_snapshot(struct auxtrace_record *itr, int idx,
500 struct auxtrace_mmap *mm,
501 unsigned char *data, u64 *head, u64 *old);
502u64 auxtrace_record__reference(struct auxtrace_record *itr);
503
504int auxtrace_index__auxtrace_event(struct list_head *head, union perf_event *event,
505 off_t file_offset);
506int auxtrace_index__write(int fd, struct list_head *head);
507int auxtrace_index__process(int fd, u64 size, struct perf_session *session,
508 bool needs_swap);
509void auxtrace_index__free(struct list_head *head);
510
511void auxtrace_synth_error(struct auxtrace_error_event *auxtrace_error, int type,
512 int code, int cpu, pid_t pid, pid_t tid, u64 ip,
513 const char *msg);
514
515int perf_event__synthesize_auxtrace_info(struct auxtrace_record *itr,
516 struct perf_tool *tool,
517 struct perf_session *session,
518 perf_event__handler_t process);
519int perf_event__process_auxtrace_info(struct perf_tool *tool,
520 union perf_event *event,
521 struct perf_session *session);
522s64 perf_event__process_auxtrace(struct perf_tool *tool,
523 union perf_event *event,
524 struct perf_session *session);
525int perf_event__process_auxtrace_error(struct perf_tool *tool,
526 union perf_event *event,
527 struct perf_session *session);
528int itrace_parse_synth_opts(const struct option *opt, const char *str,
529 int unset);
530void itrace_synth_opts__set_default(struct itrace_synth_opts *synth_opts);
531
532size_t perf_event__fprintf_auxtrace_error(union perf_event *event, FILE *fp);
533void perf_session__auxtrace_error_inc(struct perf_session *session,
534 union perf_event *event);
535void events_stats__auxtrace_error_warn(const struct events_stats *stats);
536
537void addr_filters__init(struct addr_filters *filts);
538void addr_filters__exit(struct addr_filters *filts);
539int addr_filters__parse_bare_filter(struct addr_filters *filts,
540 const char *filter);
541int auxtrace_parse_filters(struct perf_evlist *evlist);
542
543static inline int auxtrace__process_event(struct perf_session *session,
544 union perf_event *event,
545 struct perf_sample *sample,
546 struct perf_tool *tool)
547{
548 if (!session->auxtrace)
549 return 0;
550
551 return session->auxtrace->process_event(session, event, sample, tool);
552}
553
554static inline int auxtrace__flush_events(struct perf_session *session,
555 struct perf_tool *tool)
556{
557 if (!session->auxtrace)
558 return 0;
559
560 return session->auxtrace->flush_events(session, tool);
561}
562
563static inline void auxtrace__free_events(struct perf_session *session)
564{
565 if (!session->auxtrace)
566 return;
567
568 return session->auxtrace->free_events(session);
569}
570
571static inline void auxtrace__free(struct perf_session *session)
572{
573 if (!session->auxtrace)
574 return;
575
576 return session->auxtrace->free(session);
577}
578
579#else
580
581static inline struct auxtrace_record *
582auxtrace_record__init(struct perf_evlist *evlist __maybe_unused,
583 int *err)
584{
585 *err = 0;
586 return NULL;
587}
588
589static inline
590void auxtrace_record__free(struct auxtrace_record *itr __maybe_unused)
591{
592}
593
594static inline int
595perf_event__synthesize_auxtrace_info(struct auxtrace_record *itr __maybe_unused,
596 struct perf_tool *tool __maybe_unused,
597 struct perf_session *session __maybe_unused,
598 perf_event__handler_t process __maybe_unused)
599{
600 return -EINVAL;
601}
602
603static inline
604int auxtrace_record__options(struct auxtrace_record *itr __maybe_unused,
605 struct perf_evlist *evlist __maybe_unused,
606 struct record_opts *opts __maybe_unused)
607{
608 return 0;
609}
610
611#define perf_event__process_auxtrace_info 0
612#define perf_event__process_auxtrace 0
613#define perf_event__process_auxtrace_error 0
614
615static inline
616void perf_session__auxtrace_error_inc(struct perf_session *session
617 __maybe_unused,
618 union perf_event *event
619 __maybe_unused)
620{
621}
622
623static inline
624void events_stats__auxtrace_error_warn(const struct events_stats *stats
625 __maybe_unused)
626{
627}
628
629static inline
630int itrace_parse_synth_opts(const struct option *opt __maybe_unused,
631 const char *str __maybe_unused,
632 int unset __maybe_unused)
633{
634 pr_err("AUX area tracing not supported\n");
635 return -EINVAL;
636}
637
638static inline
639int auxtrace_parse_snapshot_options(struct auxtrace_record *itr __maybe_unused,
640 struct record_opts *opts __maybe_unused,
641 const char *str)
642{
643 if (!str)
644 return 0;
645 pr_err("AUX area tracing not supported\n");
646 return -EINVAL;
647}
648
649static inline
650int auxtrace__process_event(struct perf_session *session __maybe_unused,
651 union perf_event *event __maybe_unused,
652 struct perf_sample *sample __maybe_unused,
653 struct perf_tool *tool __maybe_unused)
654{
655 return 0;
656}
657
658static inline
659int auxtrace__flush_events(struct perf_session *session __maybe_unused,
660 struct perf_tool *tool __maybe_unused)
661{
662 return 0;
663}
664
665static inline
666void auxtrace__free_events(struct perf_session *session __maybe_unused)
667{
668}
669
670static inline
671void auxtrace_cache__free(struct auxtrace_cache *auxtrace_cache __maybe_unused)
672{
673}
674
675static inline
676void auxtrace__free(struct perf_session *session __maybe_unused)
677{
678}
679
680static inline
681int auxtrace_index__write(int fd __maybe_unused,
682 struct list_head *head __maybe_unused)
683{
684 return -EINVAL;
685}
686
687static inline
688int auxtrace_index__process(int fd __maybe_unused,
689 u64 size __maybe_unused,
690 struct perf_session *session __maybe_unused,
691 bool needs_swap __maybe_unused)
692{
693 return -EINVAL;
694}
695
696static inline
697void auxtrace_index__free(struct list_head *head __maybe_unused)
698{
699}
700
701static inline
702int auxtrace_parse_filters(struct perf_evlist *evlist __maybe_unused)
703{
704 return 0;
705}
706
707int auxtrace_mmap__mmap(struct auxtrace_mmap *mm,
708 struct auxtrace_mmap_params *mp,
709 void *userpg, int fd);
710void auxtrace_mmap__munmap(struct auxtrace_mmap *mm);
711void auxtrace_mmap_params__init(struct auxtrace_mmap_params *mp,
712 off_t auxtrace_offset,
713 unsigned int auxtrace_pages,
714 bool auxtrace_overwrite);
715void auxtrace_mmap_params__set_idx(struct auxtrace_mmap_params *mp,
716 struct perf_evlist *evlist, int idx,
717 bool per_cpu);
718
719#endif
720
721#endif