1 #ifndef __PERF_EVSEL_H 2 #define __PERF_EVSEL_H 1 3 4 #include <linux/list.h> 5 #include <stdbool.h> 6 #include "../../../include/linux/perf_event.h" 7 #include "types.h" 8 #include "xyarray.h" 9 #include "cgroup.h" 10 #include "hist.h" 11 12 struct perf_counts_values { 13 union { 14 struct { 15 u64 val; 16 u64 ena; 17 u64 run; 18 }; 19 u64 values[3]; 20 }; 21 }; 22 23 struct perf_counts { 24 s8 scaled; 25 struct perf_counts_values aggr; 26 struct perf_counts_values cpu[]; 27 }; 28 29 struct perf_evsel; 30 31 /* 32 * Per fd, to map back from PERF_SAMPLE_ID to evsel, only used when there are 33 * more than one entry in the evlist. 34 */ 35 struct perf_sample_id { 36 struct hlist_node node; 37 u64 id; 38 struct perf_evsel *evsel; 39 }; 40 41 /** struct perf_evsel - event selector 42 * 43 * @name - Can be set to retain the original event name passed by the user, 44 * so that when showing results in tools such as 'perf stat', we 45 * show the name used, not some alias. 46 */ 47 struct perf_evsel { 48 struct list_head node; 49 struct perf_event_attr attr; 50 char *filter; 51 struct xyarray *fd; 52 struct xyarray *sample_id; 53 u64 *id; 54 struct perf_counts *counts; 55 int idx; 56 int ids; 57 struct hists hists; 58 char *name; 59 union { 60 void *priv; 61 off_t id_offset; 62 }; 63 struct cgroup_sel *cgrp; 64 struct { 65 void *func; 66 void *data; 67 } handler; 68 bool supported; 69 }; 70 71 struct cpu_map; 72 struct thread_map; 73 struct perf_evlist; 74 struct perf_record_opts; 75 76 struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr, int idx); 77 void perf_evsel__init(struct perf_evsel *evsel, 78 struct perf_event_attr *attr, int idx); 79 void perf_evsel__exit(struct perf_evsel *evsel); 80 void perf_evsel__delete(struct perf_evsel *evsel); 81 82 void perf_evsel__config(struct perf_evsel *evsel, 83 struct perf_record_opts *opts); 84 85 int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads); 86 int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads); 87 int perf_evsel__alloc_counts(struct perf_evsel *evsel, int ncpus); 88 void perf_evsel__free_fd(struct perf_evsel *evsel); 89 void perf_evsel__free_id(struct perf_evsel *evsel); 90 void perf_evsel__close_fd(struct perf_evsel *evsel, int ncpus, int nthreads); 91 92 int perf_evsel__open_per_cpu(struct perf_evsel *evsel, 93 struct cpu_map *cpus, bool group, 94 struct xyarray *group_fds); 95 int perf_evsel__open_per_thread(struct perf_evsel *evsel, 96 struct thread_map *threads, bool group, 97 struct xyarray *group_fds); 98 int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus, 99 struct thread_map *threads, bool group, 100 struct xyarray *group_fds); 101 void perf_evsel__close(struct perf_evsel *evsel, int ncpus, int nthreads); 102 103 #define perf_evsel__match(evsel, t, c) \ 104 (evsel->attr.type == PERF_TYPE_##t && \ 105 evsel->attr.config == PERF_COUNT_##c) 106 107 int __perf_evsel__read_on_cpu(struct perf_evsel *evsel, 108 int cpu, int thread, bool scale); 109 110 /** 111 * perf_evsel__read_on_cpu - Read out the results on a CPU and thread 112 * 113 * @evsel - event selector to read value 114 * @cpu - CPU of interest 115 * @thread - thread of interest 116 */ 117 static inline int perf_evsel__read_on_cpu(struct perf_evsel *evsel, 118 int cpu, int thread) 119 { 120 return __perf_evsel__read_on_cpu(evsel, cpu, thread, false); 121 } 122 123 /** 124 * perf_evsel__read_on_cpu_scaled - Read out the results on a CPU and thread, scaled 125 * 126 * @evsel - event selector to read value 127 * @cpu - CPU of interest 128 * @thread - thread of interest 129 */ 130 static inline int perf_evsel__read_on_cpu_scaled(struct perf_evsel *evsel, 131 int cpu, int thread) 132 { 133 return __perf_evsel__read_on_cpu(evsel, cpu, thread, true); 134 } 135 136 int __perf_evsel__read(struct perf_evsel *evsel, int ncpus, int nthreads, 137 bool scale); 138 139 /** 140 * perf_evsel__read - Read the aggregate results on all CPUs 141 * 142 * @evsel - event selector to read value 143 * @ncpus - Number of cpus affected, from zero 144 * @nthreads - Number of threads affected, from zero 145 */ 146 static inline int perf_evsel__read(struct perf_evsel *evsel, 147 int ncpus, int nthreads) 148 { 149 return __perf_evsel__read(evsel, ncpus, nthreads, false); 150 } 151 152 /** 153 * perf_evsel__read_scaled - Read the aggregate results on all CPUs, scaled 154 * 155 * @evsel - event selector to read value 156 * @ncpus - Number of cpus affected, from zero 157 * @nthreads - Number of threads affected, from zero 158 */ 159 static inline int perf_evsel__read_scaled(struct perf_evsel *evsel, 160 int ncpus, int nthreads) 161 { 162 return __perf_evsel__read(evsel, ncpus, nthreads, true); 163 } 164 165 int __perf_evsel__sample_size(u64 sample_type); 166 167 static inline int perf_evsel__sample_size(struct perf_evsel *evsel) 168 { 169 return __perf_evsel__sample_size(evsel->attr.sample_type); 170 } 171 172 #endif /* __PERF_EVSEL_H */ 173