745 строки
23 KiB
C
745 строки
23 KiB
C
/*
|
|
* auxtrace.h: AUX area trace support
|
|
* Copyright (c) 2013-2015, Intel Corporation.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
*/
|
|
|
|
#ifndef __PERF_AUXTRACE_H
|
|
#define __PERF_AUXTRACE_H
|
|
|
|
#include <sys/types.h>
|
|
#include <errno.h>
|
|
#include <stdbool.h>
|
|
#include <stddef.h>
|
|
#include <linux/list.h>
|
|
#include <linux/perf_event.h>
|
|
#include <linux/types.h>
|
|
#include <asm/bitsperlong.h>
|
|
|
|
#include "../perf.h"
|
|
#include "event.h"
|
|
#include "session.h"
|
|
#include "debug.h"
|
|
|
|
union perf_event;
|
|
struct perf_session;
|
|
struct perf_evlist;
|
|
struct perf_tool;
|
|
struct perf_mmap;
|
|
struct option;
|
|
struct record_opts;
|
|
struct auxtrace_info_event;
|
|
struct events_stats;
|
|
|
|
enum auxtrace_type {
|
|
PERF_AUXTRACE_UNKNOWN,
|
|
PERF_AUXTRACE_INTEL_PT,
|
|
PERF_AUXTRACE_INTEL_BTS,
|
|
PERF_AUXTRACE_CS_ETM,
|
|
PERF_AUXTRACE_ARM_SPE,
|
|
PERF_AUXTRACE_S390_CPUMSF,
|
|
};
|
|
|
|
enum itrace_period_type {
|
|
PERF_ITRACE_PERIOD_INSTRUCTIONS,
|
|
PERF_ITRACE_PERIOD_TICKS,
|
|
PERF_ITRACE_PERIOD_NANOSECS,
|
|
};
|
|
|
|
/**
|
|
* struct itrace_synth_opts - AUX area tracing synthesis options.
|
|
* @set: indicates whether or not options have been set
|
|
* @default_no_sample: Default to no sampling.
|
|
* @inject: indicates the event (not just the sample) must be fully synthesized
|
|
* because 'perf inject' will write it out
|
|
* @instructions: whether to synthesize 'instructions' events
|
|
* @branches: whether to synthesize 'branches' events
|
|
* @transactions: whether to synthesize events for transactions
|
|
* @ptwrites: whether to synthesize events for ptwrites
|
|
* @pwr_events: whether to synthesize power events
|
|
* @errors: whether to synthesize decoder error events
|
|
* @dont_decode: whether to skip decoding entirely
|
|
* @log: write a decoding log
|
|
* @calls: limit branch samples to calls (can be combined with @returns)
|
|
* @returns: limit branch samples to returns (can be combined with @calls)
|
|
* @callchain: add callchain to 'instructions' events
|
|
* @thread_stack: feed branches to the thread_stack
|
|
* @last_branch: add branch context to 'instruction' events
|
|
* @callchain_sz: maximum callchain size
|
|
* @last_branch_sz: branch context size
|
|
* @period: 'instructions' events period
|
|
* @period_type: 'instructions' events period type
|
|
* @initial_skip: skip N events at the beginning.
|
|
* @cpu_bitmap: CPUs for which to synthesize events, or NULL for all
|
|
*/
|
|
struct itrace_synth_opts {
|
|
bool set;
|
|
bool default_no_sample;
|
|
bool inject;
|
|
bool instructions;
|
|
bool branches;
|
|
bool transactions;
|
|
bool ptwrites;
|
|
bool pwr_events;
|
|
bool errors;
|
|
bool dont_decode;
|
|
bool log;
|
|
bool calls;
|
|
bool returns;
|
|
bool callchain;
|
|
bool thread_stack;
|
|
bool last_branch;
|
|
unsigned int callchain_sz;
|
|
unsigned int last_branch_sz;
|
|
unsigned long long period;
|
|
enum itrace_period_type period_type;
|
|
unsigned long initial_skip;
|
|
unsigned long *cpu_bitmap;
|
|
};
|
|
|
|
/**
|
|
* struct auxtrace_index_entry - indexes a AUX area tracing event within a
|
|
* perf.data file.
|
|
* @file_offset: offset within the perf.data file
|
|
* @sz: size of the event
|
|
*/
|
|
struct auxtrace_index_entry {
|
|
u64 file_offset;
|
|
u64 sz;
|
|
};
|
|
|
|
#define PERF_AUXTRACE_INDEX_ENTRY_COUNT 256
|
|
|
|
/**
|
|
* struct auxtrace_index - index of AUX area tracing events within a perf.data
|
|
* file.
|
|
* @list: linking a number of arrays of entries
|
|
* @nr: number of entries
|
|
* @entries: array of entries
|
|
*/
|
|
struct auxtrace_index {
|
|
struct list_head list;
|
|
size_t nr;
|
|
struct auxtrace_index_entry entries[PERF_AUXTRACE_INDEX_ENTRY_COUNT];
|
|
};
|
|
|
|
/**
|
|
* struct auxtrace - session callbacks to allow AUX area data decoding.
|
|
* @process_event: lets the decoder see all session events
|
|
* @process_auxtrace_event: process a PERF_RECORD_AUXTRACE event
|
|
* @flush_events: process any remaining data
|
|
* @free_events: free resources associated with event processing
|
|
* @free: free resources associated with the session
|
|
*/
|
|
struct auxtrace {
|
|
int (*process_event)(struct perf_session *session,
|
|
union perf_event *event,
|
|
struct perf_sample *sample,
|
|
struct perf_tool *tool);
|
|
int (*process_auxtrace_event)(struct perf_session *session,
|
|
union perf_event *event,
|
|
struct perf_tool *tool);
|
|
int (*flush_events)(struct perf_session *session,
|
|
struct perf_tool *tool);
|
|
void (*free_events)(struct perf_session *session);
|
|
void (*free)(struct perf_session *session);
|
|
};
|
|
|
|
/**
|
|
* struct auxtrace_buffer - a buffer containing AUX area tracing data.
|
|
* @list: buffers are queued in a list held by struct auxtrace_queue
|
|
* @size: size of the buffer in bytes
|
|
* @pid: in per-thread mode, the pid this buffer is associated with
|
|
* @tid: in per-thread mode, the tid this buffer is associated with
|
|
* @cpu: in per-cpu mode, the cpu this buffer is associated with
|
|
* @data: actual buffer data (can be null if the data has not been loaded)
|
|
* @data_offset: file offset at which the buffer can be read
|
|
* @mmap_addr: mmap address at which the buffer can be read
|
|
* @mmap_size: size of the mmap at @mmap_addr
|
|
* @data_needs_freeing: @data was malloc'd so free it when it is no longer
|
|
* needed
|
|
* @consecutive: the original data was split up and this buffer is consecutive
|
|
* to the previous buffer
|
|
* @offset: offset as determined by aux_head / aux_tail members of struct
|
|
* perf_event_mmap_page
|
|
* @reference: an implementation-specific reference determined when the data is
|
|
* recorded
|
|
* @buffer_nr: used to number each buffer
|
|
* @use_size: implementation actually only uses this number of bytes
|
|
* @use_data: implementation actually only uses data starting at this address
|
|
*/
|
|
struct auxtrace_buffer {
|
|
struct list_head list;
|
|
size_t size;
|
|
pid_t pid;
|
|
pid_t tid;
|
|
int cpu;
|
|
void *data;
|
|
off_t data_offset;
|
|
void *mmap_addr;
|
|
size_t mmap_size;
|
|
bool data_needs_freeing;
|
|
bool consecutive;
|
|
u64 offset;
|
|
u64 reference;
|
|
u64 buffer_nr;
|
|
size_t use_size;
|
|
void *use_data;
|
|
};
|
|
|
|
/**
|
|
* struct auxtrace_queue - a queue of AUX area tracing data buffers.
|
|
* @head: head of buffer list
|
|
* @tid: in per-thread mode, the tid this queue is associated with
|
|
* @cpu: in per-cpu mode, the cpu this queue is associated with
|
|
* @set: %true once this queue has been dedicated to a specific thread or cpu
|
|
* @priv: implementation-specific data
|
|
*/
|
|
struct auxtrace_queue {
|
|
struct list_head head;
|
|
pid_t tid;
|
|
int cpu;
|
|
bool set;
|
|
void *priv;
|
|
};
|
|
|
|
/**
|
|
* struct auxtrace_queues - an array of AUX area tracing queues.
|
|
* @queue_array: array of queues
|
|
* @nr_queues: number of queues
|
|
* @new_data: set whenever new data is queued
|
|
* @populated: queues have been fully populated using the auxtrace_index
|
|
* @next_buffer_nr: used to number each buffer
|
|
*/
|
|
struct auxtrace_queues {
|
|
struct auxtrace_queue *queue_array;
|
|
unsigned int nr_queues;
|
|
bool new_data;
|
|
bool populated;
|
|
u64 next_buffer_nr;
|
|
};
|
|
|
|
/**
|
|
* struct auxtrace_heap_item - element of struct auxtrace_heap.
|
|
* @queue_nr: queue number
|
|
* @ordinal: value used for sorting (lowest ordinal is top of the heap) expected
|
|
* to be a timestamp
|
|
*/
|
|
struct auxtrace_heap_item {
|
|
unsigned int queue_nr;
|
|
u64 ordinal;
|
|
};
|
|
|
|
/**
|
|
* struct auxtrace_heap - a heap suitable for sorting AUX area tracing queues.
|
|
* @heap_array: the heap
|
|
* @heap_cnt: the number of elements in the heap
|
|
* @heap_sz: maximum number of elements (grows as needed)
|
|
*/
|
|
struct auxtrace_heap {
|
|
struct auxtrace_heap_item *heap_array;
|
|
unsigned int heap_cnt;
|
|
unsigned int heap_sz;
|
|
};
|
|
|
|
/**
|
|
* struct auxtrace_mmap - records an mmap of the auxtrace buffer.
|
|
* @base: address of mapped area
|
|
* @userpg: pointer to buffer's perf_event_mmap_page
|
|
* @mask: %0 if @len is not a power of two, otherwise (@len - %1)
|
|
* @len: size of mapped area
|
|
* @prev: previous aux_head
|
|
* @idx: index of this mmap
|
|
* @tid: tid for a per-thread mmap (also set if there is only 1 tid on a per-cpu
|
|
* mmap) otherwise %0
|
|
* @cpu: cpu number for a per-cpu mmap otherwise %-1
|
|
*/
|
|
struct auxtrace_mmap {
|
|
void *base;
|
|
void *userpg;
|
|
size_t mask;
|
|
size_t len;
|
|
u64 prev;
|
|
int idx;
|
|
pid_t tid;
|
|
int cpu;
|
|
};
|
|
|
|
/**
|
|
* struct auxtrace_mmap_params - parameters to set up struct auxtrace_mmap.
|
|
* @mask: %0 if @len is not a power of two, otherwise (@len - %1)
|
|
* @offset: file offset of mapped area
|
|
* @len: size of mapped area
|
|
* @prot: mmap memory protection
|
|
* @idx: index of this mmap
|
|
* @tid: tid for a per-thread mmap (also set if there is only 1 tid on a per-cpu
|
|
* mmap) otherwise %0
|
|
* @cpu: cpu number for a per-cpu mmap otherwise %-1
|
|
*/
|
|
struct auxtrace_mmap_params {
|
|
size_t mask;
|
|
off_t offset;
|
|
size_t len;
|
|
int prot;
|
|
int idx;
|
|
pid_t tid;
|
|
int cpu;
|
|
};
|
|
|
|
/**
|
|
* struct auxtrace_record - callbacks for recording AUX area data.
|
|
* @recording_options: validate and process recording options
|
|
* @info_priv_size: return the size of the private data in auxtrace_info_event
|
|
* @info_fill: fill-in the private data in auxtrace_info_event
|
|
* @free: free this auxtrace record structure
|
|
* @snapshot_start: starting a snapshot
|
|
* @snapshot_finish: finishing a snapshot
|
|
* @find_snapshot: find data to snapshot within auxtrace mmap
|
|
* @parse_snapshot_options: parse snapshot options
|
|
* @reference: provide a 64-bit reference number for auxtrace_event
|
|
* @read_finish: called after reading from an auxtrace mmap
|
|
* @alignment: alignment (if any) for AUX area data
|
|
*/
|
|
struct auxtrace_record {
|
|
int (*recording_options)(struct auxtrace_record *itr,
|
|
struct perf_evlist *evlist,
|
|
struct record_opts *opts);
|
|
size_t (*info_priv_size)(struct auxtrace_record *itr,
|
|
struct perf_evlist *evlist);
|
|
int (*info_fill)(struct auxtrace_record *itr,
|
|
struct perf_session *session,
|
|
struct auxtrace_info_event *auxtrace_info,
|
|
size_t priv_size);
|
|
void (*free)(struct auxtrace_record *itr);
|
|
int (*snapshot_start)(struct auxtrace_record *itr);
|
|
int (*snapshot_finish)(struct auxtrace_record *itr);
|
|
int (*find_snapshot)(struct auxtrace_record *itr, int idx,
|
|
struct auxtrace_mmap *mm, unsigned char *data,
|
|
u64 *head, u64 *old);
|
|
int (*parse_snapshot_options)(struct auxtrace_record *itr,
|
|
struct record_opts *opts,
|
|
const char *str);
|
|
u64 (*reference)(struct auxtrace_record *itr);
|
|
int (*read_finish)(struct auxtrace_record *itr, int idx);
|
|
unsigned int alignment;
|
|
};
|
|
|
|
/**
|
|
* struct addr_filter - address filter.
|
|
* @list: list node
|
|
* @range: true if it is a range filter
|
|
* @start: true if action is 'filter' or 'start'
|
|
* @action: 'filter', 'start' or 'stop' ('tracestop' is accepted but converted
|
|
* to 'stop')
|
|
* @sym_from: symbol name for the filter address
|
|
* @sym_to: symbol name that determines the filter size
|
|
* @sym_from_idx: selects n'th from symbols with the same name (0 means global
|
|
* and less than 0 means symbol must be unique)
|
|
* @sym_to_idx: same as @sym_from_idx but for @sym_to
|
|
* @addr: filter address
|
|
* @size: filter region size (for range filters)
|
|
* @filename: DSO file name or NULL for the kernel
|
|
* @str: allocated string that contains the other string members
|
|
*/
|
|
struct addr_filter {
|
|
struct list_head list;
|
|
bool range;
|
|
bool start;
|
|
const char *action;
|
|
const char *sym_from;
|
|
const char *sym_to;
|
|
int sym_from_idx;
|
|
int sym_to_idx;
|
|
u64 addr;
|
|
u64 size;
|
|
const char *filename;
|
|
char *str;
|
|
};
|
|
|
|
/**
|
|
* struct addr_filters - list of address filters.
|
|
* @head: list of address filters
|
|
* @cnt: number of address filters
|
|
*/
|
|
struct addr_filters {
|
|
struct list_head head;
|
|
int cnt;
|
|
};
|
|
|
|
#ifdef HAVE_AUXTRACE_SUPPORT
|
|
|
|
/*
|
|
* In snapshot mode the mmapped page is read-only which makes using
|
|
* __sync_val_compare_and_swap() problematic. However, snapshot mode expects
|
|
* the buffer is not updated while the snapshot is made (e.g. Intel PT disables
|
|
* the event) so there is not a race anyway.
|
|
*/
|
|
static inline u64 auxtrace_mmap__read_snapshot_head(struct auxtrace_mmap *mm)
|
|
{
|
|
struct perf_event_mmap_page *pc = mm->userpg;
|
|
u64 head = READ_ONCE(pc->aux_head);
|
|
|
|
/* Ensure all reads are done after we read the head */
|
|
rmb();
|
|
return head;
|
|
}
|
|
|
|
static inline u64 auxtrace_mmap__read_head(struct auxtrace_mmap *mm)
|
|
{
|
|
struct perf_event_mmap_page *pc = mm->userpg;
|
|
#if BITS_PER_LONG == 64 || !defined(HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT)
|
|
u64 head = READ_ONCE(pc->aux_head);
|
|
#else
|
|
u64 head = __sync_val_compare_and_swap(&pc->aux_head, 0, 0);
|
|
#endif
|
|
|
|
/* Ensure all reads are done after we read the head */
|
|
rmb();
|
|
return head;
|
|
}
|
|
|
|
static inline void auxtrace_mmap__write_tail(struct auxtrace_mmap *mm, u64 tail)
|
|
{
|
|
struct perf_event_mmap_page *pc = mm->userpg;
|
|
#if BITS_PER_LONG != 64 && defined(HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT)
|
|
u64 old_tail;
|
|
#endif
|
|
|
|
/* Ensure all reads are done before we write the tail out */
|
|
mb();
|
|
#if BITS_PER_LONG == 64 || !defined(HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT)
|
|
pc->aux_tail = tail;
|
|
#else
|
|
do {
|
|
old_tail = __sync_val_compare_and_swap(&pc->aux_tail, 0, 0);
|
|
} while (!__sync_bool_compare_and_swap(&pc->aux_tail, old_tail, tail));
|
|
#endif
|
|
}
|
|
|
|
int auxtrace_mmap__mmap(struct auxtrace_mmap *mm,
|
|
struct auxtrace_mmap_params *mp,
|
|
void *userpg, int fd);
|
|
void auxtrace_mmap__munmap(struct auxtrace_mmap *mm);
|
|
void auxtrace_mmap_params__init(struct auxtrace_mmap_params *mp,
|
|
off_t auxtrace_offset,
|
|
unsigned int auxtrace_pages,
|
|
bool auxtrace_overwrite);
|
|
void auxtrace_mmap_params__set_idx(struct auxtrace_mmap_params *mp,
|
|
struct perf_evlist *evlist, int idx,
|
|
bool per_cpu);
|
|
|
|
typedef int (*process_auxtrace_t)(struct perf_tool *tool,
|
|
struct perf_mmap *map,
|
|
union perf_event *event, void *data1,
|
|
size_t len1, void *data2, size_t len2);
|
|
|
|
int auxtrace_mmap__read(struct perf_mmap *map, struct auxtrace_record *itr,
|
|
struct perf_tool *tool, process_auxtrace_t fn);
|
|
|
|
int auxtrace_mmap__read_snapshot(struct perf_mmap *map,
|
|
struct auxtrace_record *itr,
|
|
struct perf_tool *tool, process_auxtrace_t fn,
|
|
size_t snapshot_size);
|
|
|
|
int auxtrace_queues__init(struct auxtrace_queues *queues);
|
|
int auxtrace_queues__add_event(struct auxtrace_queues *queues,
|
|
struct perf_session *session,
|
|
union perf_event *event, off_t data_offset,
|
|
struct auxtrace_buffer **buffer_ptr);
|
|
void auxtrace_queues__free(struct auxtrace_queues *queues);
|
|
int auxtrace_queues__process_index(struct auxtrace_queues *queues,
|
|
struct perf_session *session);
|
|
struct auxtrace_buffer *auxtrace_buffer__next(struct auxtrace_queue *queue,
|
|
struct auxtrace_buffer *buffer);
|
|
void *auxtrace_buffer__get_data(struct auxtrace_buffer *buffer, int fd);
|
|
void auxtrace_buffer__put_data(struct auxtrace_buffer *buffer);
|
|
void auxtrace_buffer__drop_data(struct auxtrace_buffer *buffer);
|
|
void auxtrace_buffer__free(struct auxtrace_buffer *buffer);
|
|
|
|
int auxtrace_heap__add(struct auxtrace_heap *heap, unsigned int queue_nr,
|
|
u64 ordinal);
|
|
void auxtrace_heap__pop(struct auxtrace_heap *heap);
|
|
void auxtrace_heap__free(struct auxtrace_heap *heap);
|
|
|
|
struct auxtrace_cache_entry {
|
|
struct hlist_node hash;
|
|
u32 key;
|
|
};
|
|
|
|
struct auxtrace_cache *auxtrace_cache__new(unsigned int bits, size_t entry_size,
|
|
unsigned int limit_percent);
|
|
void auxtrace_cache__free(struct auxtrace_cache *auxtrace_cache);
|
|
void *auxtrace_cache__alloc_entry(struct auxtrace_cache *c);
|
|
void auxtrace_cache__free_entry(struct auxtrace_cache *c, void *entry);
|
|
int auxtrace_cache__add(struct auxtrace_cache *c, u32 key,
|
|
struct auxtrace_cache_entry *entry);
|
|
void *auxtrace_cache__lookup(struct auxtrace_cache *c, u32 key);
|
|
|
|
struct auxtrace_record *auxtrace_record__init(struct perf_evlist *evlist,
|
|
int *err);
|
|
|
|
int auxtrace_parse_snapshot_options(struct auxtrace_record *itr,
|
|
struct record_opts *opts,
|
|
const char *str);
|
|
int auxtrace_record__options(struct auxtrace_record *itr,
|
|
struct perf_evlist *evlist,
|
|
struct record_opts *opts);
|
|
size_t auxtrace_record__info_priv_size(struct auxtrace_record *itr,
|
|
struct perf_evlist *evlist);
|
|
int auxtrace_record__info_fill(struct auxtrace_record *itr,
|
|
struct perf_session *session,
|
|
struct auxtrace_info_event *auxtrace_info,
|
|
size_t priv_size);
|
|
void auxtrace_record__free(struct auxtrace_record *itr);
|
|
int auxtrace_record__snapshot_start(struct auxtrace_record *itr);
|
|
int auxtrace_record__snapshot_finish(struct auxtrace_record *itr);
|
|
int auxtrace_record__find_snapshot(struct auxtrace_record *itr, int idx,
|
|
struct auxtrace_mmap *mm,
|
|
unsigned char *data, u64 *head, u64 *old);
|
|
u64 auxtrace_record__reference(struct auxtrace_record *itr);
|
|
|
|
int auxtrace_index__auxtrace_event(struct list_head *head, union perf_event *event,
|
|
off_t file_offset);
|
|
int auxtrace_index__write(int fd, struct list_head *head);
|
|
int auxtrace_index__process(int fd, u64 size, struct perf_session *session,
|
|
bool needs_swap);
|
|
void auxtrace_index__free(struct list_head *head);
|
|
|
|
void auxtrace_synth_error(struct auxtrace_error_event *auxtrace_error, int type,
|
|
int code, int cpu, pid_t pid, pid_t tid, u64 ip,
|
|
const char *msg);
|
|
|
|
int perf_event__synthesize_auxtrace_info(struct auxtrace_record *itr,
|
|
struct perf_tool *tool,
|
|
struct perf_session *session,
|
|
perf_event__handler_t process);
|
|
int perf_event__process_auxtrace_info(struct perf_session *session,
|
|
union perf_event *event);
|
|
s64 perf_event__process_auxtrace(struct perf_session *session,
|
|
union perf_event *event);
|
|
int perf_event__process_auxtrace_error(struct perf_session *session,
|
|
union perf_event *event);
|
|
int itrace_parse_synth_opts(const struct option *opt, const char *str,
|
|
int unset);
|
|
void itrace_synth_opts__set_default(struct itrace_synth_opts *synth_opts,
|
|
bool no_sample);
|
|
|
|
size_t perf_event__fprintf_auxtrace_error(union perf_event *event, FILE *fp);
|
|
void perf_session__auxtrace_error_inc(struct perf_session *session,
|
|
union perf_event *event);
|
|
void events_stats__auxtrace_error_warn(const struct events_stats *stats);
|
|
|
|
void addr_filters__init(struct addr_filters *filts);
|
|
void addr_filters__exit(struct addr_filters *filts);
|
|
int addr_filters__parse_bare_filter(struct addr_filters *filts,
|
|
const char *filter);
|
|
int auxtrace_parse_filters(struct perf_evlist *evlist);
|
|
|
|
static inline int auxtrace__process_event(struct perf_session *session,
|
|
union perf_event *event,
|
|
struct perf_sample *sample,
|
|
struct perf_tool *tool)
|
|
{
|
|
if (!session->auxtrace)
|
|
return 0;
|
|
|
|
return session->auxtrace->process_event(session, event, sample, tool);
|
|
}
|
|
|
|
static inline int auxtrace__flush_events(struct perf_session *session,
|
|
struct perf_tool *tool)
|
|
{
|
|
if (!session->auxtrace)
|
|
return 0;
|
|
|
|
return session->auxtrace->flush_events(session, tool);
|
|
}
|
|
|
|
static inline void auxtrace__free_events(struct perf_session *session)
|
|
{
|
|
if (!session->auxtrace)
|
|
return;
|
|
|
|
return session->auxtrace->free_events(session);
|
|
}
|
|
|
|
static inline void auxtrace__free(struct perf_session *session)
|
|
{
|
|
if (!session->auxtrace)
|
|
return;
|
|
|
|
return session->auxtrace->free(session);
|
|
}
|
|
|
|
#define ITRACE_HELP \
|
|
" i: synthesize instructions events\n" \
|
|
" b: synthesize branches events\n" \
|
|
" c: synthesize branches events (calls only)\n" \
|
|
" r: synthesize branches events (returns only)\n" \
|
|
" x: synthesize transactions events\n" \
|
|
" w: synthesize ptwrite events\n" \
|
|
" p: synthesize power events\n" \
|
|
" e: synthesize error events\n" \
|
|
" d: create a debug log\n" \
|
|
" g[len]: synthesize a call chain (use with i or x)\n" \
|
|
" l[len]: synthesize last branch entries (use with i or x)\n" \
|
|
" sNUMBER: skip initial number of events\n" \
|
|
" PERIOD[ns|us|ms|i|t]: specify period to sample stream\n" \
|
|
" concatenate multiple options. Default is ibxwpe or cewp\n"
|
|
|
|
|
|
#else
|
|
|
|
static inline struct auxtrace_record *
|
|
auxtrace_record__init(struct perf_evlist *evlist __maybe_unused,
|
|
int *err)
|
|
{
|
|
*err = 0;
|
|
return NULL;
|
|
}
|
|
|
|
static inline
|
|
void auxtrace_record__free(struct auxtrace_record *itr __maybe_unused)
|
|
{
|
|
}
|
|
|
|
static inline int
|
|
perf_event__synthesize_auxtrace_info(struct auxtrace_record *itr __maybe_unused,
|
|
struct perf_tool *tool __maybe_unused,
|
|
struct perf_session *session __maybe_unused,
|
|
perf_event__handler_t process __maybe_unused)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline
|
|
int auxtrace_record__options(struct auxtrace_record *itr __maybe_unused,
|
|
struct perf_evlist *evlist __maybe_unused,
|
|
struct record_opts *opts __maybe_unused)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#define perf_event__process_auxtrace_info 0
|
|
#define perf_event__process_auxtrace 0
|
|
#define perf_event__process_auxtrace_error 0
|
|
|
|
static inline
|
|
void perf_session__auxtrace_error_inc(struct perf_session *session
|
|
__maybe_unused,
|
|
union perf_event *event
|
|
__maybe_unused)
|
|
{
|
|
}
|
|
|
|
static inline
|
|
void events_stats__auxtrace_error_warn(const struct events_stats *stats
|
|
__maybe_unused)
|
|
{
|
|
}
|
|
|
|
static inline
|
|
int itrace_parse_synth_opts(const struct option *opt __maybe_unused,
|
|
const char *str __maybe_unused,
|
|
int unset __maybe_unused)
|
|
{
|
|
pr_err("AUX area tracing not supported\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline
|
|
int auxtrace_parse_snapshot_options(struct auxtrace_record *itr __maybe_unused,
|
|
struct record_opts *opts __maybe_unused,
|
|
const char *str)
|
|
{
|
|
if (!str)
|
|
return 0;
|
|
pr_err("AUX area tracing not supported\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline
|
|
int auxtrace__process_event(struct perf_session *session __maybe_unused,
|
|
union perf_event *event __maybe_unused,
|
|
struct perf_sample *sample __maybe_unused,
|
|
struct perf_tool *tool __maybe_unused)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline
|
|
int auxtrace__flush_events(struct perf_session *session __maybe_unused,
|
|
struct perf_tool *tool __maybe_unused)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline
|
|
void auxtrace__free_events(struct perf_session *session __maybe_unused)
|
|
{
|
|
}
|
|
|
|
static inline
|
|
void auxtrace_cache__free(struct auxtrace_cache *auxtrace_cache __maybe_unused)
|
|
{
|
|
}
|
|
|
|
static inline
|
|
void auxtrace__free(struct perf_session *session __maybe_unused)
|
|
{
|
|
}
|
|
|
|
static inline
|
|
int auxtrace_index__write(int fd __maybe_unused,
|
|
struct list_head *head __maybe_unused)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline
|
|
int auxtrace_index__process(int fd __maybe_unused,
|
|
u64 size __maybe_unused,
|
|
struct perf_session *session __maybe_unused,
|
|
bool needs_swap __maybe_unused)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline
|
|
void auxtrace_index__free(struct list_head *head __maybe_unused)
|
|
{
|
|
}
|
|
|
|
static inline
|
|
int auxtrace_parse_filters(struct perf_evlist *evlist __maybe_unused)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
int auxtrace_mmap__mmap(struct auxtrace_mmap *mm,
|
|
struct auxtrace_mmap_params *mp,
|
|
void *userpg, int fd);
|
|
void auxtrace_mmap__munmap(struct auxtrace_mmap *mm);
|
|
void auxtrace_mmap_params__init(struct auxtrace_mmap_params *mp,
|
|
off_t auxtrace_offset,
|
|
unsigned int auxtrace_pages,
|
|
bool auxtrace_overwrite);
|
|
void auxtrace_mmap_params__set_idx(struct auxtrace_mmap_params *mp,
|
|
struct perf_evlist *evlist, int idx,
|
|
bool per_cpu);
|
|
|
|
#define ITRACE_HELP ""
|
|
|
|
#endif
|
|
|
|
#endif
|