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 bool supported; 65 }; 66 67 struct cpu_map; 68 struct thread_map; 69 struct perf_evlist; 70 71 struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr, int idx); 72 void perf_evsel__init(struct perf_evsel *evsel, 73 struct perf_event_attr *attr, int idx); 74 void perf_evsel__exit(struct perf_evsel *evsel); 75 void perf_evsel__delete(struct perf_evsel *evsel); 76 77 int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads); 78 int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads); 79 int perf_evsel__alloc_counts(struct perf_evsel *evsel, int ncpus); 80 void perf_evsel__free_fd(struct perf_evsel *evsel); 81 void perf_evsel__free_id(struct perf_evsel *evsel); 82 void perf_evsel__close_fd(struct perf_evsel *evsel, int ncpus, int nthreads); 83 84 int perf_evsel__open_per_cpu(struct perf_evsel *evsel, 85 struct cpu_map *cpus, bool group); 86 int perf_evsel__open_per_thread(struct perf_evsel *evsel, 87 struct thread_map *threads, bool group); 88 int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus, 89 struct thread_map *threads, bool group); 90 91 #define perf_evsel__match(evsel, t, c) \ 92 (evsel->attr.type == PERF_TYPE_##t && \ 93 evsel->attr.config == PERF_COUNT_##c) 94 95 int __perf_evsel__read_on_cpu(struct perf_evsel *evsel, 96 int cpu, int thread, bool scale); 97 98 /** 99 * perf_evsel__read_on_cpu - Read out the results on a CPU and thread 100 * 101 * @evsel - event selector to read value 102 * @cpu - CPU of interest 103 * @thread - thread of interest 104 */ 105 static inline int perf_evsel__read_on_cpu(struct perf_evsel *evsel, 106 int cpu, int thread) 107 { 108 return __perf_evsel__read_on_cpu(evsel, cpu, thread, false); 109 } 110 111 /** 112 * perf_evsel__read_on_cpu_scaled - Read out the results on a CPU and thread, scaled 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_scaled(struct perf_evsel *evsel, 119 int cpu, int thread) 120 { 121 return __perf_evsel__read_on_cpu(evsel, cpu, thread, true); 122 } 123 124 int __perf_evsel__read(struct perf_evsel *evsel, int ncpus, int nthreads, 125 bool scale); 126 127 /** 128 * perf_evsel__read - Read the aggregate results on all CPUs 129 * 130 * @evsel - event selector to read value 131 * @ncpus - Number of cpus affected, from zero 132 * @nthreads - Number of threads affected, from zero 133 */ 134 static inline int perf_evsel__read(struct perf_evsel *evsel, 135 int ncpus, int nthreads) 136 { 137 return __perf_evsel__read(evsel, ncpus, nthreads, false); 138 } 139 140 /** 141 * perf_evsel__read_scaled - Read the aggregate results on all CPUs, scaled 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_scaled(struct perf_evsel *evsel, 148 int ncpus, int nthreads) 149 { 150 return __perf_evsel__read(evsel, ncpus, nthreads, true); 151 } 152 153 int __perf_evsel__sample_size(u64 sample_type); 154 155 static inline int perf_evsel__sample_size(struct perf_evsel *evsel) 156 { 157 return __perf_evsel__sample_size(evsel->attr.sample_type); 158 } 159 160 #endif /* __PERF_EVSEL_H */ 161