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 struct perf_evsel *first); 85 86 int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads); 87 int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads); 88 int perf_evsel__alloc_counts(struct perf_evsel *evsel, int ncpus); 89 void perf_evsel__free_fd(struct perf_evsel *evsel); 90 void perf_evsel__free_id(struct perf_evsel *evsel); 91 void perf_evsel__close_fd(struct perf_evsel *evsel, int ncpus, int nthreads); 92 93 int perf_evsel__open_per_cpu(struct perf_evsel *evsel, 94 struct cpu_map *cpus, bool group, 95 struct xyarray *group_fds); 96 int perf_evsel__open_per_thread(struct perf_evsel *evsel, 97 struct thread_map *threads, bool group, 98 struct xyarray *group_fds); 99 int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus, 100 struct thread_map *threads, bool group, 101 struct xyarray *group_fds); 102 void perf_evsel__close(struct perf_evsel *evsel, int ncpus, int nthreads); 103 104 #define perf_evsel__match(evsel, t, c) \ 105 (evsel->attr.type == PERF_TYPE_##t && \ 106 evsel->attr.config == PERF_COUNT_##c) 107 108 int __perf_evsel__read_on_cpu(struct perf_evsel *evsel, 109 int cpu, int thread, bool scale); 110 111 /** 112 * perf_evsel__read_on_cpu - Read out the results on a CPU and thread 113 * 114 * @evsel - event selector to read value 115 * @cpu - CPU of interest 116 * @thread - thread of interest 117 */ 118 static inline int perf_evsel__read_on_cpu(struct perf_evsel *evsel, 119 int cpu, int thread) 120 { 121 return __perf_evsel__read_on_cpu(evsel, cpu, thread, false); 122 } 123 124 /** 125 * perf_evsel__read_on_cpu_scaled - Read out the results on a CPU and thread, scaled 126 * 127 * @evsel - event selector to read value 128 * @cpu - CPU of interest 129 * @thread - thread of interest 130 */ 131 static inline int perf_evsel__read_on_cpu_scaled(struct perf_evsel *evsel, 132 int cpu, int thread) 133 { 134 return __perf_evsel__read_on_cpu(evsel, cpu, thread, true); 135 } 136 137 int __perf_evsel__read(struct perf_evsel *evsel, int ncpus, int nthreads, 138 bool scale); 139 140 /** 141 * perf_evsel__read - Read the aggregate results on all CPUs 142 * 143 * @evsel - event selector to read value 144 * @ncpus - Number of cpus affected, from zero 145 * @nthreads - Number of threads affected, from zero 146 */ 147 static inline int perf_evsel__read(struct perf_evsel *evsel, 148 int ncpus, int nthreads) 149 { 150 return __perf_evsel__read(evsel, ncpus, nthreads, false); 151 } 152 153 /** 154 * perf_evsel__read_scaled - Read the aggregate results on all CPUs, scaled 155 * 156 * @evsel - event selector to read value 157 * @ncpus - Number of cpus affected, from zero 158 * @nthreads - Number of threads affected, from zero 159 */ 160 static inline int perf_evsel__read_scaled(struct perf_evsel *evsel, 161 int ncpus, int nthreads) 162 { 163 return __perf_evsel__read(evsel, ncpus, nthreads, true); 164 } 165 166 int __perf_evsel__sample_size(u64 sample_type); 167 168 static inline int perf_evsel__sample_size(struct perf_evsel *evsel) 169 { 170 return __perf_evsel__sample_size(evsel->attr.sample_type); 171 } 172 173 void hists__init(struct hists *hists); 174 175 #endif /* __PERF_EVSEL_H */ 176