/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LIBPERF_INTERNAL_EVSEL_H
#define __LIBPERF_INTERNAL_EVSEL_H
#include <linux/types.h>
#include <linux/perf_event.h>
#include <stdbool.h>
#include <sys/types.h>
#include <internal/cpumap.h>
struct perf_thread_map;
struct xyarray;
/*
* Per fd, to map back from PERF_SAMPLE_ID to evsel, only used when there are
* more than one entry in the evlist.
*/
struct perf_sample_id {
struct hlist_node node;
u64 id;
struct perf_evsel *evsel;
/*
* 'idx' will be used for AUX area sampling. A sample will have AUX area
* data that will be queued for decoding, where there are separate
* queues for each CPU (per-cpu tracing) or task (per-thread tracing).
* The sample ID can be used to lookup 'idx' which is effectively the
* queue number.
*/
int idx;
struct perf_cpu cpu;
pid_t tid;
/* Guest machine pid and VCPU, valid only if machine_pid is non-zero */
pid_t machine_pid;
struct perf_cpu vcpu;
/* Holds total ID period value for PERF_SAMPLE_READ processing. */
u64 period;
};
struct perf_evsel {
struct list_head node;
struct perf_event_attr attr;
/** The commonly used cpu map of CPUs the event should be opened upon, etc. */
struct perf_cpu_map *cpus;
/**
* The cpu map read from the PMU. For core PMUs this is the list of all
* CPUs the event can be opened upon. For other PMUs this is the default
* cpu map for opening the event on, for example, the first CPU on a
* socket for an uncore event.
*/
struct perf_cpu_map *own_cpus;
struct perf_thread_map *threads;
struct xyarray *fd;
struct xyarray *mmap;
struct xyarray *sample_id;
u64 *id;
u32 ids;
struct perf_evsel *leader;
/* parse modifier helper */
int nr_members;
/*
* system_wide is for events that need to be on every CPU, irrespective
* of user requested CPUs or threads. Tha main example of this is the
* dummy event. Map propagation will set cpus for this event to all CPUs
* as software PMU events like dummy, have a CPU map that is empty.
*/
bool system_wide;
/*
* Some events, for example uncore events, require a CPU.
* i.e. it cannot be the 'any CPU' value of -1.
*/
bool requires_cpu;
/** Is the PMU for the event a core one? Effects the handling of own_cpus. */
bool is_pmu_core;
int idx;
};
void perf_evsel__init(struct perf_evsel *evsel, struct perf_event_attr *attr,
int idx);
int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads);
void perf_evsel__close_fd(struct perf_evsel *evsel);
void perf_evsel__free_fd(struct perf_evsel *evsel);
int perf_evsel__read_size(struct perf_evsel *evsel);
int perf_evsel__apply_filter(struct perf_evsel *evsel, const char *filter);
int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads);
void perf_evsel__free_id(struct perf_evsel *evsel);
#endif /* __LIBPERF_INTERNAL_EVSEL_H */
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