tools/perf/util/stat.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __PERF_STATS_H
   3 #define __PERF_STATS_H
   4
   5 #include <linux/types.h>
   6 #include <stdio.h>
   7 #include <sys/types.h>
   8 #include <sys/resource.h>
   9 #include "cpumap.h"
  10 #include "rblist.h"
  11 #include "counts.h"
  12
  13 struct perf_cpu_map;
  14 struct perf_stat_config;
  15 struct timespec;
  16
  17 struct stats {
  18         double n, mean, M2;
  19         u64 max, min;
  20 };
  21
  22 /* hold aggregated event info */
  23 struct perf_stat_aggr {
  24         /* aggregated values */
  25         struct perf_counts_values       counts;
  26         /* number of entries (CPUs) aggregated */
  27         int                             nr;
  28         /* whether any entry has failed to read/process event */
  29         bool                            failed;
  30         /* to mark this data is processed already */
  31         bool                            used;
  32 };
  33
  34 /* per-evsel event stats */
  35 struct perf_stat_evsel {
  36         /* used for repeated runs */
  37         struct stats             res_stats;
  38         /* number of allocated 'aggr' */
  39         int                      nr_aggr;
  40         /* aggregated event values */
  41         struct perf_stat_aggr   *aggr;
  42         /* used for group read */
  43         u64                     *group_data;
  44 };
  45
  46 enum aggr_mode {
  47         AGGR_NONE,
  48         AGGR_GLOBAL,
  49         AGGR_SOCKET,
  50         AGGR_DIE,
  51         AGGR_CORE,
  52         AGGR_THREAD,
  53         AGGR_UNSET,
  54         AGGR_NODE,
  55         AGGR_MAX
  56 };
  57
  58 struct rusage_stats {
  59         struct stats ru_utime_usec_stat;
  60         struct stats ru_stime_usec_stat;
  61 };
  62
  63 typedef struct aggr_cpu_id (*aggr_get_id_t)(struct perf_stat_config *config, struct perf_cpu cpu);
  64
  65 struct perf_stat_config {
  66         enum aggr_mode           aggr_mode;
  67         bool                     scale;
  68         bool                     no_inherit;
  69         bool                     identifier;
  70         bool                     csv_output;
  71         bool                     json_output;
  72         bool                     interval_clear;
  73         bool                     metric_only;
  74         bool                     null_run;
  75         bool                     ru_display;
  76         bool                     big_num;
  77         bool                     no_merge;
  78         bool                     hybrid_merge;
  79         bool                     walltime_run_table;
  80         bool                     all_kernel;
  81         bool                     all_user;
  82         bool                     percore_show_thread;
  83         bool                     summary;
  84         bool                     no_csv_summary;
  85         bool                     metric_no_group;
  86         bool                     metric_no_merge;
  87         bool                     metric_no_threshold;
  88         bool                     stop_read_counter;
  89         bool                     iostat_run;
  90         char                     *user_requested_cpu_list;
  91         bool                     system_wide;
  92         FILE                    *output;
  93         unsigned int             interval;
  94         unsigned int             timeout;
  95         unsigned int             unit_width;
  96         unsigned int             metric_only_len;
  97         int                      times;
  98         int                      run_count;
  99         int                      print_free_counters_hint;
 100         int                      print_mixed_hw_group_error;
 101         const char              *csv_sep;
 102         struct stats            *walltime_nsecs_stats;
 103         struct rusage            ru_data;
 104         struct rusage_stats              *ru_stats;
 105         struct cpu_aggr_map     *aggr_map;
 106         aggr_get_id_t            aggr_get_id;
 107         struct cpu_aggr_map     *cpus_aggr_map;
 108         u64                     *walltime_run;
 109         struct rblist            metric_events;
 110         int                      ctl_fd;
 111         int                      ctl_fd_ack;
 112         bool                     ctl_fd_close;
 113         const char              *cgroup_list;
 114         unsigned int            topdown_level;
 115 };
 116
 117 void perf_stat__set_big_num(int set);
 118 void perf_stat__set_no_csv_summary(int set);
 119
 120 void update_stats(struct stats *stats, u64 val);
 121 double avg_stats(struct stats *stats);
 122 double stddev_stats(struct stats *stats);
 123 double rel_stddev_stats(double stddev, double avg);
 124
 125 static inline void init_stats(struct stats *stats)
 126 {
 127         stats->n    = 0.0;
 128         stats->mean = 0.0;
 129         stats->M2   = 0.0;
 130         stats->min  = (u64) -1;
 131         stats->max  = 0;
 132 }
 133
 134 static inline void init_rusage_stats(struct rusage_stats *ru_stats) {
 135         init_stats(&ru_stats->ru_utime_usec_stat);
 136         init_stats(&ru_stats->ru_stime_usec_stat);
 137 }
 138
 139 static inline void update_rusage_stats(struct rusage_stats *ru_stats, struct rusage* rusage) {
 140         const u64 us_to_ns = 1000;
 141         const u64 s_to_ns = 1000000000;
 142         update_stats(&ru_stats->ru_utime_usec_stat,
 143                      (rusage->ru_utime.tv_usec * us_to_ns + rusage->ru_utime.tv_sec * s_to_ns));
 144         update_stats(&ru_stats->ru_stime_usec_stat,
 145                      (rusage->ru_stime.tv_usec * us_to_ns + rusage->ru_stime.tv_sec * s_to_ns));
 146 }
 147
 148 struct evsel;
 149 struct evlist;
 150
 151 extern struct stats walltime_nsecs_stats;
 152 extern struct rusage_stats ru_stats;
 153
 154 typedef void (*print_metric_t)(struct perf_stat_config *config,
 155                                void *ctx, const char *color, const char *unit,
 156                                const char *fmt, double val);
 157 typedef void (*new_line_t)(struct perf_stat_config *config, void *ctx);
 158
 159 void perf_stat__reset_shadow_stats(void);
 160 struct perf_stat_output_ctx {
 161         void *ctx;
 162         print_metric_t print_metric;
 163         new_line_t new_line;
 164         bool force_header;
 165 };
 166
 167 void perf_stat__print_shadow_stats(struct perf_stat_config *config,
 168                                    struct evsel *evsel,
 169                                    double avg, int aggr_idx,
 170                                    struct perf_stat_output_ctx *out,
 171                                    struct rblist *metric_events);
 172
 173 int evlist__alloc_stats(struct perf_stat_config *config,
 174                         struct evlist *evlist, bool alloc_raw);
 175 void evlist__free_stats(struct evlist *evlist);
 176 void evlist__reset_stats(struct evlist *evlist);
 177 void evlist__reset_prev_raw_counts(struct evlist *evlist);
 178 void evlist__copy_prev_raw_counts(struct evlist *evlist);
 179 void evlist__save_aggr_prev_raw_counts(struct evlist *evlist);
 180
 181 int evlist__alloc_aggr_stats(struct evlist *evlist, int nr_aggr);
 182 void evlist__reset_aggr_stats(struct evlist *evlist);
 183
 184 int perf_stat_process_counter(struct perf_stat_config *config,
 185                               struct evsel *counter);
 186 void perf_stat_merge_counters(struct perf_stat_config *config, struct evlist *evlist);
 187 void perf_stat_process_percore(struct perf_stat_config *config, struct evlist *evlist);
 188
 189 struct perf_tool;
 190 union perf_event;
 191 struct perf_session;
 192 struct target;
 193
 194 int perf_event__process_stat_event(struct perf_session *session,
 195                                    union perf_event *event);
 196
 197 size_t perf_event__fprintf_stat(union perf_event *event, FILE *fp);
 198 size_t perf_event__fprintf_stat_round(union perf_event *event, FILE *fp);
 199 size_t perf_event__fprintf_stat_config(union perf_event *event, FILE *fp);
 200
 201 int create_perf_stat_counter(struct evsel *evsel,
 202                              struct perf_stat_config *config,
 203                              struct target *target,
 204                              int cpu_map_idx);
 205 void evlist__print_counters(struct evlist *evlist, struct perf_stat_config *config,
 206                             struct target *_target, struct timespec *ts, int argc, const char **argv);
 207
 208 struct metric_expr;
 209 double test_generic_metric(struct metric_expr *mexp, int aggr_idx);
 210 #endif