tools/perf/util/evsel.h

   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         u32                     ids;
  57         struct hists            hists;
  58         char                    *name;
  59         struct event_format     *tp_format;
  60         union {
  61                 void            *priv;
  62                 off_t           id_offset;
  63         };
  64         struct cgroup_sel       *cgrp;
  65         struct {
  66                 void            *func;
  67                 void            *data;
  68         } handler;
  69         struct cpu_map          *cpus;
  70         unsigned int            sample_size;
  71         bool                    supported;
  72         /* parse modifier helper */
  73         int                     exclude_GH;
  74         struct perf_evsel       *leader;
  75         char                    *group_name;
  76 };
  77
  78 struct cpu_map;
  79 struct thread_map;
  80 struct perf_evlist;
  81 struct perf_record_opts;
  82
  83 struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr, int idx);
  84 void perf_evsel__init(struct perf_evsel *evsel,
  85                       struct perf_event_attr *attr, int idx);
  86 void perf_evsel__exit(struct perf_evsel *evsel);
  87 void perf_evsel__delete(struct perf_evsel *evsel);
  88
  89 void perf_evsel__config(struct perf_evsel *evsel,
  90                         struct perf_record_opts *opts,
  91                         struct perf_evsel *first);
  92
  93 bool perf_evsel__is_cache_op_valid(u8 type, u8 op);
  94
  95 #define PERF_EVSEL__MAX_ALIASES 8
  96
  97 extern const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX]
  98                                        [PERF_EVSEL__MAX_ALIASES];
  99 extern const char *perf_evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX]
 100                                           [PERF_EVSEL__MAX_ALIASES];
 101 extern const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX]
 102                                               [PERF_EVSEL__MAX_ALIASES];
 103 extern const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX];
 104 extern const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX];
 105 int __perf_evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result,
 106                                             char *bf, size_t size);
 107 const char *perf_evsel__name(struct perf_evsel *evsel);
 108
 109 int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads);
 110 int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads);
 111 int perf_evsel__alloc_counts(struct perf_evsel *evsel, int ncpus);
 112 void perf_evsel__free_fd(struct perf_evsel *evsel);
 113 void perf_evsel__free_id(struct perf_evsel *evsel);
 114 void perf_evsel__close_fd(struct perf_evsel *evsel, int ncpus, int nthreads);
 115
 116 int perf_evsel__open_per_cpu(struct perf_evsel *evsel,
 117                              struct cpu_map *cpus);
 118 int perf_evsel__open_per_thread(struct perf_evsel *evsel,
 119                                 struct thread_map *threads);
 120 int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus,
 121                      struct thread_map *threads);
 122 void perf_evsel__close(struct perf_evsel *evsel, int ncpus, int nthreads);
 123
 124 struct perf_sample;
 125
 126 char *perf_evsel__strval(struct perf_evsel *evsel, struct perf_sample *sample,
 127                          const char *name);
 128 u64 perf_evsel__intval(struct perf_evsel *evsel, struct perf_sample *sample,
 129                        const char *name);
 130
 131 #define perf_evsel__match(evsel, t, c)          \
 132         (evsel->attr.type == PERF_TYPE_##t &&   \
 133          evsel->attr.config == PERF_COUNT_##c)
 134
 135 static inline bool perf_evsel__match2(struct perf_evsel *e1,
 136                                       struct perf_evsel *e2)
 137 {
 138         return (e1->attr.type == e2->attr.type) &&
 139                (e1->attr.config == e2->attr.config);
 140 }
 141
 142 int __perf_evsel__read_on_cpu(struct perf_evsel *evsel,
 143                               int cpu, int thread, bool scale);
 144
 145 /**
 146  * perf_evsel__read_on_cpu - Read out the results on a CPU and thread
 147  *
 148  * @evsel - event selector to read value
 149  * @cpu - CPU of interest
 150  * @thread - thread of interest
 151  */
 152 static inline int perf_evsel__read_on_cpu(struct perf_evsel *evsel,
 153                                           int cpu, int thread)
 154 {
 155         return __perf_evsel__read_on_cpu(evsel, cpu, thread, false);
 156 }
 157
 158 /**
 159  * perf_evsel__read_on_cpu_scaled - Read out the results on a CPU and thread, scaled
 160  *
 161  * @evsel - event selector to read value
 162  * @cpu - CPU of interest
 163  * @thread - thread of interest
 164  */
 165 static inline int perf_evsel__read_on_cpu_scaled(struct perf_evsel *evsel,
 166                                                  int cpu, int thread)
 167 {
 168         return __perf_evsel__read_on_cpu(evsel, cpu, thread, true);
 169 }
 170
 171 int __perf_evsel__read(struct perf_evsel *evsel, int ncpus, int nthreads,
 172                        bool scale);
 173
 174 /**
 175  * perf_evsel__read - Read the aggregate results on all CPUs
 176  *
 177  * @evsel - event selector to read value
 178  * @ncpus - Number of cpus affected, from zero
 179  * @nthreads - Number of threads affected, from zero
 180  */
 181 static inline int perf_evsel__read(struct perf_evsel *evsel,
 182                                     int ncpus, int nthreads)
 183 {
 184         return __perf_evsel__read(evsel, ncpus, nthreads, false);
 185 }
 186
 187 /**
 188  * perf_evsel__read_scaled - Read the aggregate results on all CPUs, scaled
 189  *
 190  * @evsel - event selector to read value
 191  * @ncpus - Number of cpus affected, from zero
 192  * @nthreads - Number of threads affected, from zero
 193  */
 194 static inline int perf_evsel__read_scaled(struct perf_evsel *evsel,
 195                                           int ncpus, int nthreads)
 196 {
 197         return __perf_evsel__read(evsel, ncpus, nthreads, true);
 198 }
 199
 200 void hists__init(struct hists *hists);
 201
 202 int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event,
 203                              struct perf_sample *sample, bool swapped);
 204
 205 static inline struct perf_evsel *perf_evsel__next(struct perf_evsel *evsel)
 206 {
 207         return list_entry(evsel->node.next, struct perf_evsel, node);
 208 }
 209 #endif /* __PERF_EVSEL_H */