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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __PERF_EVSEL_H
#define __PERF_EVSEL_H 1
#include <linux/list.h>
#include <stdbool.h>
#include <sys/types.h>
#include <linux/perf_event.h>
#include <linux/types.h>
#include <internal/evsel.h>
#include <perf/evsel.h>
#include "symbol_conf.h"
#include <internal/cpumap.h>
struct bpf_object;
struct cgroup;
struct perf_counts;
struct perf_stat_evsel;
union perf_event;
typedef int (perf_evsel__sb_cb_t)(union perf_event *event, void *data);
enum perf_tool_event {
/** struct evsel - event selector
* @evlist - evlist this evsel is in, if it is in one.
* @core - libperf evsel object
* @name - Can be set to retain the original event name passed by the user,
* so that when showing results in tools such as 'perf stat', we
* show the name used, not some alias.
* @id_pos: the position of the event id (PERF_SAMPLE_ID or
* PERF_SAMPLE_IDENTIFIER) in a sample event i.e. in the array of
* struct perf_record_sample
* @is_pos: the position (counting backwards) of the event id (PERF_SAMPLE_ID or
* PERF_SAMPLE_IDENTIFIER) in a non-sample event i.e. if sample_id_all
* is used there is an id sample appended to non-sample events
* @priv: And what is in its containing unnamed union are tool specific
struct evsel {
struct perf_evsel core;
struct evlist *evlist;
char *filter;
struct perf_counts *counts;
struct perf_counts *prev_raw_counts;
int idx;
unsigned long max_events;
unsigned long nr_events_printed;
char *name;
double scale;
const char *unit;
struct tep_event *tp_format;
off_t id_offset;
struct perf_stat_evsel *stats;
void *priv;
u64 db_id;
struct cgroup *cgrp;
void *handler;
unsigned int sample_size;
int id_pos;
int is_pos;
enum perf_tool_event tool_event;
bool uniquified_name;
bool snapshot;
bool supported;
bool needs_swap;
bool disabled;
bool no_aux_samples;
bool immediate;
bool tracking;
bool per_pkg;
bool precise_max;
bool ignore_missing_thread;
bool forced_leader;
bool use_uncore_alias;
/* parse modifier helper */
int exclude_GH;
int sample_read;
unsigned long *per_pkg_mask;
struct evsel *leader;
char *group_name;
bool cmdline_group_boundary;
struct list_head config_terms;
struct bpf_object *bpf_obj;
int bpf_fd;
int err;
bool auto_merge_stats;
bool merged_stat;
const char * metric_expr;
const char * metric_name;
struct evsel **metric_events;
struct evsel *metric_leader;
bool collect_stat;
bool weak_group;
bool reset_group;
bool errored;
bool percore;
int cpu_iter;
const char *pmu_name;
struct {
perf_evsel__sb_cb_t *cb;
void *data;
} side_band;
struct perf_missing_features {
bool sample_id_all;
bool exclude_guest;
bool mmap2;
bool cloexec;
bool clockid;
bool clockid_wrong;
bool lbr_flags;
bool write_backward;
bool group_read;
bool ksymbol;
bool bpf;
bool aux_output;
extern struct perf_missing_features perf_missing_features;
struct perf_cpu_map;
struct target;
struct thread_map;
struct record_opts;
static inline struct perf_cpu_map *evsel__cpus(struct evsel *evsel)
return perf_evsel__cpus(&evsel->core);
static inline int perf_evsel__nr_cpus(struct evsel *evsel)
return evsel__cpus(evsel)->nr;
void perf_counts_values__scale(struct perf_counts_values *count,
bool scale, s8 *pscaled);
void perf_evsel__compute_deltas(struct evsel *evsel, int cpu, int thread,
struct perf_counts_values *count);
int perf_evsel__object_config(size_t object_size,
int (*init)(struct evsel *evsel),
void (*fini)(struct evsel *evsel));
struct evsel *perf_evsel__new_idx(struct perf_event_attr *attr, int idx);
static inline struct evsel *evsel__new(struct perf_event_attr *attr)
return perf_evsel__new_idx(attr, 0);
struct evsel *perf_evsel__newtp_idx(const char *sys, const char *name, int idx);
* Returns pointer with encoded error via <linux/err.h> interface.
static inline struct evsel *perf_evsel__newtp(const char *sys, const char *name)
return perf_evsel__newtp_idx(sys, name, 0);
struct evsel *perf_evsel__new_cycles(bool precise);
struct tep_event *event_format__new(const char *sys, const char *name);
void evsel__init(struct evsel *evsel, struct perf_event_attr *attr, int idx);
void perf_evsel__exit(struct evsel *evsel);
void evsel__delete(struct evsel *evsel);
struct callchain_param;
void perf_evsel__config(struct evsel *evsel,
struct record_opts *opts,
struct callchain_param *callchain);
void perf_evsel__config_callchain(struct evsel *evsel,
struct record_opts *opts,
struct callchain_param *callchain);
int __perf_evsel__sample_size(u64 sample_type);
void perf_evsel__calc_id_pos(struct evsel *evsel);
bool perf_evsel__is_cache_op_valid(u8 type, u8 op);
extern const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX]
extern const char *perf_evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX]
extern const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX]
extern const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX];
extern const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX];
int __perf_evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result,
char *bf, size_t size);
const char *perf_evsel__name(struct evsel *evsel);
const char *perf_evsel__group_name(struct evsel *evsel);
int perf_evsel__group_desc(struct evsel *evsel, char *buf, size_t size);
void __perf_evsel__set_sample_bit(struct evsel *evsel,
enum perf_event_sample_format bit);
void __perf_evsel__reset_sample_bit(struct evsel *evsel,
enum perf_event_sample_format bit);
#define perf_evsel__set_sample_bit(evsel, bit) \
__perf_evsel__set_sample_bit(evsel, PERF_SAMPLE_##bit)
#define perf_evsel__reset_sample_bit(evsel, bit) \
__perf_evsel__reset_sample_bit(evsel, PERF_SAMPLE_##bit)
void perf_evsel__set_sample_id(struct evsel *evsel,
bool use_sample_identifier);
int perf_evsel__set_filter(struct evsel *evsel, const char *filter);
int perf_evsel__append_tp_filter(struct evsel *evsel, const char *filter);
int perf_evsel__append_addr_filter(struct evsel *evsel,
const char *filter);
int evsel__enable_cpu(struct evsel *evsel, int cpu);
int evsel__enable(struct evsel *evsel);
int evsel__disable(struct evsel *evsel);
int evsel__disable_cpu(struct evsel *evsel, int cpu);
int perf_evsel__open_per_cpu(struct evsel *evsel,
struct perf_cpu_map *cpus,
int cpu);
int perf_evsel__open_per_thread(struct evsel *evsel,
struct perf_thread_map *threads);
int evsel__open(struct evsel *evsel, struct perf_cpu_map *cpus,
struct perf_thread_map *threads);
void evsel__close(struct evsel *evsel);
struct perf_sample;
void *perf_evsel__rawptr(struct evsel *evsel, struct perf_sample *sample,
const char *name);
u64 perf_evsel__intval(struct evsel *evsel, struct perf_sample *sample,
const char *name);
static inline char *perf_evsel__strval(struct evsel *evsel,
struct perf_sample *sample,
const char *name)
return perf_evsel__rawptr(evsel, sample, name);
struct tep_format_field;
u64 format_field__intval(struct tep_format_field *field, struct perf_sample *sample, bool needs_swap);
struct tep_format_field *perf_evsel__field(struct evsel *evsel, const char *name);
#define perf_evsel__match(evsel, t, c) \
(evsel->core.attr.type == PERF_TYPE_##t && \
evsel->core.attr.config == PERF_COUNT_##c)
static inline bool perf_evsel__match2(struct evsel *e1,
struct evsel *e2)
return (e1->core.attr.type == e2->core.attr.type) &&
(e1->core.attr.config == e2->core.attr.config);
#define perf_evsel__cmp(a, b) \
((a) && \
(b) && \
(a)->core.attr.type == (b)->core.attr.type && \
(a)->core.attr.config == (b)->core.attr.config)
int perf_evsel__read_counter(struct evsel *evsel, int cpu, int thread);
int __perf_evsel__read_on_cpu(struct evsel *evsel,
int cpu, int thread, bool scale);
* perf_evsel__read_on_cpu - Read out the results on a CPU and thread
* @evsel - event selector to read value
* @cpu - CPU of interest
* @thread - thread of interest
static inline int perf_evsel__read_on_cpu(struct evsel *evsel,
int cpu, int thread)
return __perf_evsel__read_on_cpu(evsel, cpu, thread, false);
* perf_evsel__read_on_cpu_scaled - Read out the results on a CPU and thread, scaled
* @evsel - event selector to read value
* @cpu - CPU of interest
* @thread - thread of interest
static inline int perf_evsel__read_on_cpu_scaled(struct evsel *evsel,
int cpu, int thread)
return __perf_evsel__read_on_cpu(evsel, cpu, thread, true);
int perf_evsel__parse_sample(struct evsel *evsel, union perf_event *event,
struct perf_sample *sample);
int perf_evsel__parse_sample_timestamp(struct evsel *evsel,
union perf_event *event,
u64 *timestamp);
static inline struct evsel *perf_evsel__next(struct evsel *evsel)
return list_entry(evsel->, struct evsel, core.node);
static inline struct evsel *perf_evsel__prev(struct evsel *evsel)
return list_entry(evsel->core.node.prev, struct evsel, core.node);
* perf_evsel__is_group_leader - Return whether given evsel is a leader event
* @evsel - evsel selector to be tested
* Return %true if @evsel is a group leader or a stand-alone event
static inline bool perf_evsel__is_group_leader(const struct evsel *evsel)
return evsel->leader == evsel;
* perf_evsel__is_group_event - Return whether given evsel is a group event
* @evsel - evsel selector to be tested
* Return %true iff event group view is enabled and @evsel is a actual group
* leader which has other members in the group
static inline bool perf_evsel__is_group_event(struct evsel *evsel)
if (!symbol_conf.event_group)
return false;
return perf_evsel__is_group_leader(evsel) && evsel->core.nr_members > 1;
bool perf_evsel__is_function_event(struct evsel *evsel);
static inline bool perf_evsel__is_bpf_output(struct evsel *evsel)
return perf_evsel__match(evsel, SOFTWARE, SW_BPF_OUTPUT);
static inline bool perf_evsel__is_clock(struct evsel *evsel)
return perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK);
bool perf_evsel__fallback(struct evsel *evsel, int err,
char *msg, size_t msgsize);
int perf_evsel__open_strerror(struct evsel *evsel, struct target *target,
int err, char *msg, size_t size);
static inline int perf_evsel__group_idx(struct evsel *evsel)
return evsel->idx - evsel->leader->idx;
/* Iterates group WITHOUT the leader. */
#define for_each_group_member(_evsel, _leader) \
for ((_evsel) = list_entry((_leader)->, struct evsel, core.node); \
(_evsel) && (_evsel)->leader == (_leader); \
(_evsel) = list_entry((_evsel)->, struct evsel, core.node))
/* Iterates group WITH the leader. */
#define for_each_group_evsel(_evsel, _leader) \
for ((_evsel) = _leader; \
(_evsel) && (_evsel)->leader == (_leader); \
(_evsel) = list_entry((_evsel)->, struct evsel, core.node))
static inline bool perf_evsel__has_branch_callstack(const struct evsel *evsel)
return evsel->core.attr.branch_sample_type & PERF_SAMPLE_BRANCH_CALL_STACK;
static inline bool evsel__has_callchain(const struct evsel *evsel)
return (evsel->core.attr.sample_type & PERF_SAMPLE_CALLCHAIN) != 0;
struct perf_env *perf_evsel__env(struct evsel *evsel);
int perf_evsel__store_ids(struct evsel *evsel, struct evlist *evlist);
#endif /* __PERF_EVSEL_H */