tools/perf/util/hist.h

   1 #ifndef __PERF_HIST_H
   2 #define __PERF_HIST_H
   3
   4 #include <linux/types.h>
   5 #include <pthread.h>
   6 #include "callchain.h"
   7
   8 extern struct callchain_param callchain_param;
   9
  10 struct hist_entry;
  11 struct addr_location;
  12 struct symbol;
  13
  14 /*
  15  * The kernel collects the number of events it couldn't send in a stretch and
  16  * when possible sends this number in a PERF_RECORD_LOST event. The number of
  17  * such "chunks" of lost events is stored in .nr_events[PERF_EVENT_LOST] while
  18  * total_lost tells exactly how many events the kernel in fact lost, i.e. it is
  19  * the sum of all struct lost_event.lost fields reported.
  20  *
  21  * The total_period is needed because by default auto-freq is used, so
  22  * multipling nr_events[PERF_EVENT_SAMPLE] by a frequency isn't possible to get
  23  * the total number of low level events, it is necessary to to sum all struct
  24  * sample_event.period and stash the result in total_period.
  25  */
  26 struct events_stats {
  27         u64 total_period;
  28         u64 total_lost;
  29         u64 total_invalid_chains;
  30         u32 nr_events[PERF_RECORD_HEADER_MAX];
  31         u32 nr_lost_warned;
  32         u32 nr_unknown_events;
  33         u32 nr_invalid_chains;
  34         u32 nr_unknown_id;
  35 };
  36
  37 enum hist_column {
  38         HISTC_SYMBOL,
  39         HISTC_DSO,
  40         HISTC_THREAD,
  41         HISTC_COMM,
  42         HISTC_PARENT,
  43         HISTC_CPU,
  44         HISTC_NR_COLS, /* Last entry */
  45 };
  46
  47 struct thread;
  48 struct dso;
  49
  50 struct hists {
  51         struct rb_root          entries_in_array[2];
  52         struct rb_root          *entries_in;
  53         struct rb_root          entries;
  54         struct rb_root          entries_collapsed;
  55         u64                     nr_entries;
  56         const struct thread     *thread_filter;
  57         const struct dso        *dso_filter;
  58         pthread_mutex_t         lock;
  59         struct events_stats     stats;
  60         u64                     event_stream;
  61         u16                     col_len[HISTC_NR_COLS];
  62         /* Best would be to reuse the session callchain cursor */
  63         struct callchain_cursor callchain_cursor;
  64 };
  65
  66 struct hist_entry *__hists__add_entry(struct hists *self,
  67                                       struct addr_location *al,
  68                                       struct symbol *parent, u64 period);
  69 extern int64_t hist_entry__cmp(struct hist_entry *, struct hist_entry *);
  70 extern int64_t hist_entry__collapse(struct hist_entry *, struct hist_entry *);
  71 int hist_entry__fprintf(struct hist_entry *he, size_t size, struct hists *hists,
  72                         struct hists *pair_hists, bool show_displacement,
  73                         long displacement, FILE *fp, u64 session_total);
  74 int hist_entry__snprintf(struct hist_entry *self, char *bf, size_t size,
  75                          struct hists *hists);
  76 void hist_entry__free(struct hist_entry *);
  77
  78 void hists__output_resort(struct hists *self);
  79 void hists__output_resort_threaded(struct hists *hists);
  80 void hists__collapse_resort(struct hists *self);
  81 void hists__collapse_resort_threaded(struct hists *hists);
  82
  83 void hists__decay_entries(struct hists *hists, bool zap_user, bool zap_kernel);
  84 void hists__decay_entries_threaded(struct hists *hists, bool zap_user,
  85                                    bool zap_kernel);
  86 void hists__output_recalc_col_len(struct hists *hists, int max_rows);
  87
  88 void hists__inc_nr_events(struct hists *self, u32 type);
  89 size_t hists__fprintf_nr_events(struct hists *self, FILE *fp);
  90
  91 size_t hists__fprintf(struct hists *self, struct hists *pair,
  92                       bool show_displacement, bool show_header,
  93                       int max_rows, int max_cols, FILE *fp);
  94
  95 int hist_entry__inc_addr_samples(struct hist_entry *self, int evidx, u64 addr);
  96 int hist_entry__annotate(struct hist_entry *self, size_t privsize);
  97
  98 void hists__filter_by_dso(struct hists *hists);
  99 void hists__filter_by_thread(struct hists *hists);
 100
 101 u16 hists__col_len(struct hists *self, enum hist_column col);
 102 void hists__set_col_len(struct hists *self, enum hist_column col, u16 len);
 103 bool hists__new_col_len(struct hists *self, enum hist_column col, u16 len);
 104
 105 struct perf_evlist;
 106
 107 #ifdef NO_NEWT_SUPPORT
 108 static inline
 109 int perf_evlist__tui_browse_hists(struct perf_evlist *evlist __used,
 110                                   const char *help __used,
 111                                   void(*timer)(void *arg) __used,
 112                                   void *arg __used,
 113                                   int refresh __used)
 114 {
 115         return 0;
 116 }
 117
 118 static inline int hist_entry__tui_annotate(struct hist_entry *self __used,
 119                                            int evidx __used,
 120                                            int nr_events __used,
 121                                            void(*timer)(void *arg) __used,
 122                                            void *arg __used,
 123                                            int delay_secs __used)
 124 {
 125         return 0;
 126 }
 127 #define K_LEFT -1
 128 #define K_RIGHT -2
 129 #else
 130 #include "ui/keysyms.h"
 131 int hist_entry__tui_annotate(struct hist_entry *he, int evidx, int nr_events,
 132                              void(*timer)(void *arg), void *arg, int delay_secs);
 133
 134 int perf_evlist__tui_browse_hists(struct perf_evlist *evlist, const char *help,
 135                                   void(*timer)(void *arg), void *arg,
 136                                   int refresh);
 137 #endif
 138
 139 unsigned int hists__sort_list_width(struct hists *self);
 140
 141 #endif  /* __PERF_HIST_H */