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_evsel {
  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         AGGR_UNSET,
  35 };
  36
  37 struct perf_stat_config {
  38         enum aggr_mode  aggr_mode;
  39         bool            scale;
  40         FILE            *output;
  41         unsigned int    interval;
  42 };
  43
  44 void update_stats(struct stats *stats, u64 val);
  45 double avg_stats(struct stats *stats);
  46 double stddev_stats(struct stats *stats);
  47 double rel_stddev_stats(double stddev, double avg);
  48
  49 static inline void init_stats(struct stats *stats)
  50 {
  51         stats->n    = 0.0;
  52         stats->mean = 0.0;
  53         stats->M2   = 0.0;
  54         stats->min  = (u64) -1;
  55         stats->max  = 0;
  56 }
  57
  58 struct perf_evsel;
  59 struct perf_evlist;
  60
  61 bool __perf_evsel_stat__is(struct perf_evsel *evsel,
  62                            enum perf_stat_evsel_id id);
  63
  64 #define perf_stat_evsel__is(evsel, id) \
  65         __perf_evsel_stat__is(evsel, PERF_STAT_EVSEL_ID__ ## id)
  66
  67 void perf_stat_evsel_id_init(struct perf_evsel *evsel);
  68
  69 extern struct stats walltime_nsecs_stats;
  70
  71 typedef void (*print_metric_t)(void *ctx, const char *color, const char *unit,
  72                                const char *fmt, double val);
  73 typedef void (*new_line_t )(void *ctx);
  74
  75 void perf_stat__init_shadow_stats(void);
  76 void perf_stat__reset_shadow_stats(void);
  77 void perf_stat__update_shadow_stats(struct perf_evsel *counter, u64 *count,
  78                                     int cpu);
  79 struct perf_stat_output_ctx {
  80         void *ctx;
  81         print_metric_t print_metric;
  82         new_line_t new_line;
  83 };
  84
  85 void perf_stat__print_shadow_stats(struct perf_evsel *evsel,
  86                                    double avg, int cpu,
  87                                    struct perf_stat_output_ctx *out);
  88
  89 int perf_evlist__alloc_stats(struct perf_evlist *evlist, bool alloc_raw);
  90 void perf_evlist__free_stats(struct perf_evlist *evlist);
  91 void perf_evlist__reset_stats(struct perf_evlist *evlist);
  92
  93 int perf_stat_process_counter(struct perf_stat_config *config,
  94                               struct perf_evsel *counter);
  95 struct perf_tool;
  96 union perf_event;
  97 struct perf_session;
  98 int perf_event__process_stat_event(struct perf_tool *tool,
  99                                    union perf_event *event,
 100                                    struct perf_session *session);
 101
 102 size_t perf_event__fprintf_stat(union perf_event *event, FILE *fp);
 103 size_t perf_event__fprintf_stat_round(union perf_event *event, FILE *fp);
 104 size_t perf_event__fprintf_stat_config(union perf_event *event, FILE *fp);
 105 #endif