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 10 struct perf_counts_values { 11 union { 12 struct { 13 u64 val; 14 u64 ena; 15 u64 run; 16 }; 17 u64 values[3]; 18 }; 19 }; 20 21 struct perf_counts { 22 s8 scaled; 23 struct perf_counts_values aggr; 24 struct perf_counts_values cpu[]; 25 }; 26 27 struct perf_evsel { 28 struct list_head node; 29 struct perf_event_attr attr; 30 char *filter; 31 struct xyarray *fd; 32 struct perf_counts *counts; 33 int idx; 34 void *priv; 35 }; 36 37 struct cpu_map; 38 struct thread_map; 39 40 struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr, int idx); 41 void perf_evsel__delete(struct perf_evsel *evsel); 42 43 int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads); 44 int perf_evsel__alloc_counts(struct perf_evsel *evsel, int ncpus); 45 void perf_evsel__free_fd(struct perf_evsel *evsel); 46 void perf_evsel__close_fd(struct perf_evsel *evsel, int ncpus, int nthreads); 47 48 int perf_evsel__open_per_cpu(struct perf_evsel *evsel, struct cpu_map *cpus); 49 int perf_evsel__open_per_thread(struct perf_evsel *evsel, struct thread_map *threads); 50 int perf_evsel__open(struct perf_evsel *evsel, 51 struct cpu_map *cpus, struct thread_map *threads); 52 53 #define perf_evsel__match(evsel, t, c) \ 54 (evsel->attr.type == PERF_TYPE_##t && \ 55 evsel->attr.config == PERF_COUNT_##c) 56 57 int __perf_evsel__read_on_cpu(struct perf_evsel *evsel, 58 int cpu, int thread, bool scale); 59 60 /** 61 * perf_evsel__read_on_cpu - Read out the results on a CPU and thread 62 * 63 * @evsel - event selector to read value 64 * @cpu - CPU of interest 65 * @thread - thread of interest 66 */ 67 static inline int perf_evsel__read_on_cpu(struct perf_evsel *evsel, 68 int cpu, int thread) 69 { 70 return __perf_evsel__read_on_cpu(evsel, cpu, thread, false); 71 } 72 73 /** 74 * perf_evsel__read_on_cpu_scaled - Read out the results on a CPU and thread, scaled 75 * 76 * @evsel - event selector to read value 77 * @cpu - CPU of interest 78 * @thread - thread of interest 79 */ 80 static inline int perf_evsel__read_on_cpu_scaled(struct perf_evsel *evsel, 81 int cpu, int thread) 82 { 83 return __perf_evsel__read_on_cpu(evsel, cpu, thread, true); 84 } 85 86 int __perf_evsel__read(struct perf_evsel *evsel, int ncpus, int nthreads, 87 bool scale); 88 89 /** 90 * perf_evsel__read - Read the aggregate results on all CPUs 91 * 92 * @evsel - event selector to read value 93 * @ncpus - Number of cpus affected, from zero 94 * @nthreads - Number of threads affected, from zero 95 */ 96 static inline int perf_evsel__read(struct perf_evsel *evsel, 97 int ncpus, int nthreads) 98 { 99 return __perf_evsel__read(evsel, ncpus, nthreads, false); 100 } 101 102 /** 103 * perf_evsel__read_scaled - Read the aggregate results on all CPUs, scaled 104 * 105 * @evsel - event selector to read value 106 * @ncpus - Number of cpus affected, from zero 107 * @nthreads - Number of threads affected, from zero 108 */ 109 static inline int perf_evsel__read_scaled(struct perf_evsel *evsel, 110 int ncpus, int nthreads) 111 { 112 return __perf_evsel__read(evsel, ncpus, nthreads, true); 113 } 114 115 #endif /* __PERF_EVSEL_H */ 116