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 unsigned int sample_size; 69 bool supported; 70 }; 71 72 struct cpu_map; 73 struct thread_map; 74 struct perf_evlist; 75 struct perf_record_opts; 76 77 struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr, int idx); 78 void perf_evsel__init(struct perf_evsel *evsel, 79 struct perf_event_attr *attr, int idx); 80 void perf_evsel__exit(struct perf_evsel *evsel); 81 void perf_evsel__delete(struct perf_evsel *evsel); 82 83 void perf_evsel__config(struct perf_evsel *evsel, 84 struct perf_record_opts *opts, 85 struct perf_evsel *first); 86 87 bool perf_evsel__is_cache_op_valid(u8 type, u8 op); 88 89 #define PERF_EVSEL__MAX_ALIASES 8 90 91 extern const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX] 92 [PERF_EVSEL__MAX_ALIASES]; 93 extern const char *perf_evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX] 94 [PERF_EVSEL__MAX_ALIASES]; 95 const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX] 96 [PERF_EVSEL__MAX_ALIASES]; 97 int __perf_evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result, 98 char *bf, size_t size); 99 const char *perf_evsel__name(struct perf_evsel *evsel); 100 101 int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads); 102 int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads); 103 int perf_evsel__alloc_counts(struct perf_evsel *evsel, int ncpus); 104 void perf_evsel__free_fd(struct perf_evsel *evsel); 105 void perf_evsel__free_id(struct perf_evsel *evsel); 106 void perf_evsel__close_fd(struct perf_evsel *evsel, int ncpus, int nthreads); 107 108 int perf_evsel__open_per_cpu(struct perf_evsel *evsel, 109 struct cpu_map *cpus, bool group, 110 struct xyarray *group_fds); 111 int perf_evsel__open_per_thread(struct perf_evsel *evsel, 112 struct thread_map *threads, bool group, 113 struct xyarray *group_fds); 114 int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus, 115 struct thread_map *threads, bool group, 116 struct xyarray *group_fds); 117 void perf_evsel__close(struct perf_evsel *evsel, int ncpus, int nthreads); 118 119 #define perf_evsel__match(evsel, t, c) \ 120 (evsel->attr.type == PERF_TYPE_##t && \ 121 evsel->attr.config == PERF_COUNT_##c) 122 123 int __perf_evsel__read_on_cpu(struct perf_evsel *evsel, 124 int cpu, int thread, bool scale); 125 126 /** 127 * perf_evsel__read_on_cpu - Read out the results on a CPU and thread 128 * 129 * @evsel - event selector to read value 130 * @cpu - CPU of interest 131 * @thread - thread of interest 132 */ 133 static inline int perf_evsel__read_on_cpu(struct perf_evsel *evsel, 134 int cpu, int thread) 135 { 136 return __perf_evsel__read_on_cpu(evsel, cpu, thread, false); 137 } 138 139 /** 140 * perf_evsel__read_on_cpu_scaled - Read out the results on a CPU and thread, scaled 141 * 142 * @evsel - event selector to read value 143 * @cpu - CPU of interest 144 * @thread - thread of interest 145 */ 146 static inline int perf_evsel__read_on_cpu_scaled(struct perf_evsel *evsel, 147 int cpu, int thread) 148 { 149 return __perf_evsel__read_on_cpu(evsel, cpu, thread, true); 150 } 151 152 int __perf_evsel__read(struct perf_evsel *evsel, int ncpus, int nthreads, 153 bool scale); 154 155 /** 156 * perf_evsel__read - Read the aggregate results on all CPUs 157 * 158 * @evsel - event selector to read value 159 * @ncpus - Number of cpus affected, from zero 160 * @nthreads - Number of threads affected, from zero 161 */ 162 static inline int perf_evsel__read(struct perf_evsel *evsel, 163 int ncpus, int nthreads) 164 { 165 return __perf_evsel__read(evsel, ncpus, nthreads, false); 166 } 167 168 /** 169 * perf_evsel__read_scaled - Read the aggregate results on all CPUs, scaled 170 * 171 * @evsel - event selector to read value 172 * @ncpus - Number of cpus affected, from zero 173 * @nthreads - Number of threads affected, from zero 174 */ 175 static inline int perf_evsel__read_scaled(struct perf_evsel *evsel, 176 int ncpus, int nthreads) 177 { 178 return __perf_evsel__read(evsel, ncpus, nthreads, true); 179 } 180 181 void hists__init(struct hists *hists); 182 183 int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event, 184 struct perf_sample *sample, bool swapped); 185 #endif /* __PERF_EVSEL_H */ 186