tools/perf/util/stat.h

   1 #ifndef __PERF_STATS_H
   2 #define __PERF_STATS_H
   3
   4 #include <linux/types.h>
   5 #include <stdio.h>
   6 #include "xyarray.h"
   7
   8 struct stats
   9 {
  10         double n, mean, M2;
  11         u64 max, min;
  12 };
  13
  14 enum perf_stat_evsel_id {
  15         PERF_STAT_EVSEL_ID__NONE = 0,
  16         PERF_STAT_EVSEL_ID__CYCLES_IN_TX,
  17         PERF_STAT_EVSEL_ID__TRANSACTION_START,
  18         PERF_STAT_EVSEL_ID__ELISION_START,
  19         PERF_STAT_EVSEL_ID__CYCLES_IN_TX_CP,
  20         PERF_STAT_EVSEL_ID__MAX,
  21 };
  22
  23 struct perf_stat {
  24         struct stats            res_stats[3];
  25         enum perf_stat_evsel_id id;
  26 };
  27
  28 enum aggr_mode {
  29         AGGR_NONE,
  30         AGGR_GLOBAL,
  31         AGGR_SOCKET,
  32         AGGR_CORE,
  33         AGGR_THREAD,
  34 };
  35
  36 struct perf_stat_config {
  37         enum aggr_mode  aggr_mode;
  38         bool            scale;
  39         FILE            *output;
  40         unsigned int    interval;
  41 };
  42
  43 void update_stats(struct stats *stats, u64 val);
  44 double avg_stats(struct stats *stats);
  45 double stddev_stats(struct stats *stats);
  46 double rel_stddev_stats(double stddev, double avg);
  47
  48 static inline void init_stats(struct stats *stats)
  49 {
  50         stats->n    = 0.0;
  51         stats->mean = 0.0;
  52         stats->M2   = 0.0;
  53         stats->min  = (u64) -1;
  54         stats->max  = 0;
  55 }
  56
  57 struct perf_evsel;
  58 struct perf_evlist;
  59
  60 bool __perf_evsel_stat__is(struct perf_evsel *evsel,
  61                            enum perf_stat_evsel_id id);
  62
  63 #define perf_stat_evsel__is(evsel, id) \
  64         __perf_evsel_stat__is(evsel, PERF_STAT_EVSEL_ID__ ## id)
  65
  66 void perf_stat_evsel_id_init(struct perf_evsel *evsel);
  67
  68 extern struct stats walltime_nsecs_stats;
  69
  70 void perf_stat__reset_shadow_stats(void);
  71 void perf_stat__update_shadow_stats(struct perf_evsel *counter, u64 *count,
  72                                     int cpu);
  73 void perf_stat__print_shadow_stats(FILE *out, struct perf_evsel *evsel,
  74                                    double avg, int cpu, enum aggr_mode aggr);
  75
  76 void perf_evsel__reset_stat_priv(struct perf_evsel *evsel);
  77 int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel);
  78 void perf_evsel__free_stat_priv(struct perf_evsel *evsel);
  79
  80 int perf_evsel__alloc_prev_raw_counts(struct perf_evsel *evsel,
  81                                       int ncpus, int nthreads);
  82 void perf_evsel__free_prev_raw_counts(struct perf_evsel *evsel);
  83
  84 int perf_evsel__alloc_stats(struct perf_evsel *evsel, bool alloc_raw);
  85
  86 int perf_evlist__alloc_stats(struct perf_evlist *evlist, bool alloc_raw);
  87 void perf_evlist__free_stats(struct perf_evlist *evlist);
  88 void perf_evlist__reset_stats(struct perf_evlist *evlist);
  89
  90 int perf_stat_process_counter(struct perf_stat_config *config,
  91                               struct perf_evsel *counter);
  92 #endif