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1/* SPDX-License-Identifier: GPL-2.0 */2#ifndef __LIBPERF_INTERNAL_EVSEL_H3#define __LIBPERF_INTERNAL_EVSEL_H4 5#include <linux/types.h>6#include <linux/perf_event.h>7#include <stdbool.h>8#include <sys/types.h>9#include <internal/cpumap.h>10 11struct perf_thread_map;12struct xyarray;13 14/*15 * Per fd, to map back from PERF_SAMPLE_ID to evsel, only used when there are16 * more than one entry in the evlist.17 */18struct perf_sample_id {19 struct hlist_node node;20 u64 id;21 struct perf_evsel *evsel;22 /*23 * 'idx' will be used for AUX area sampling. A sample will have AUX area24 * data that will be queued for decoding, where there are separate25 * queues for each CPU (per-cpu tracing) or task (per-thread tracing).26 * The sample ID can be used to lookup 'idx' which is effectively the27 * queue number.28 */29 int idx;30 struct perf_cpu cpu;31 pid_t tid;32 33 /* Guest machine pid and VCPU, valid only if machine_pid is non-zero */34 pid_t machine_pid;35 struct perf_cpu vcpu;36 37 /* Holds total ID period value for PERF_SAMPLE_READ processing. */38 u64 period;39};40 41struct perf_evsel {42 struct list_head node;43 struct perf_event_attr attr;44 /** The commonly used cpu map of CPUs the event should be opened upon, etc. */45 struct perf_cpu_map *cpus;46 /**47 * The cpu map read from the PMU. For core PMUs this is the list of all48 * CPUs the event can be opened upon. For other PMUs this is the default49 * cpu map for opening the event on, for example, the first CPU on a50 * socket for an uncore event.51 */52 struct perf_cpu_map *own_cpus;53 struct perf_thread_map *threads;54 struct xyarray *fd;55 struct xyarray *mmap;56 struct xyarray *sample_id;57 u64 *id;58 u32 ids;59 struct perf_evsel *leader;60 61 /* parse modifier helper */62 int nr_members;63 /*64 * system_wide is for events that need to be on every CPU, irrespective65 * of user requested CPUs or threads. Tha main example of this is the66 * dummy event. Map propagation will set cpus for this event to all CPUs67 * as software PMU events like dummy, have a CPU map that is empty.68 */69 bool system_wide;70 /*71 * Some events, for example uncore events, require a CPU.72 * i.e. it cannot be the 'any CPU' value of -1.73 */74 bool requires_cpu;75 /** Is the PMU for the event a core one? Effects the handling of own_cpus. */76 bool is_pmu_core;77 int idx;78};79 80void perf_evsel__init(struct perf_evsel *evsel, struct perf_event_attr *attr,81 int idx);82int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads);83void perf_evsel__close_fd(struct perf_evsel *evsel);84void perf_evsel__free_fd(struct perf_evsel *evsel);85int perf_evsel__read_size(struct perf_evsel *evsel);86int perf_evsel__apply_filter(struct perf_evsel *evsel, const char *filter);87 88int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads);89void perf_evsel__free_id(struct perf_evsel *evsel);90 91#endif /* __LIBPERF_INTERNAL_EVSEL_H */92