tools/perf/util/hist.h

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