tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
8extern struct callchain_param callchain_param;
9
10struct hist_entry;
11struct addr_location;
12struct 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 */
26struct 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
37enum 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
47struct thread;
48struct dso;
49
50struct 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
66void hists__init(struct hists *hists);
67
68struct hist_entry *__hists__add_entry(struct hists *self,
69 struct addr_location *al,
70 struct symbol *parent, u64 period);
71extern int64_t hist_entry__cmp(struct hist_entry *, struct hist_entry *);
72extern int64_t hist_entry__collapse(struct hist_entry *, struct hist_entry *);
73int hist_entry__fprintf(struct hist_entry *he, size_t size, struct hists *hists,
74 struct hists *pair_hists, bool show_displacement,
75 long displacement, FILE *fp, u64 session_total);
76int hist_entry__snprintf(struct hist_entry *self, char *bf, size_t size,
77 struct hists *hists);
78void hist_entry__free(struct hist_entry *);
79
80void hists__output_resort(struct hists *self);
81void hists__output_resort_threaded(struct hists *hists);
82void hists__collapse_resort(struct hists *self);
83void hists__collapse_resort_threaded(struct hists *hists);
84
85void hists__decay_entries(struct hists *hists, bool zap_user, bool zap_kernel);
86void hists__decay_entries_threaded(struct hists *hists, bool zap_user,
87 bool zap_kernel);
88void hists__output_recalc_col_len(struct hists *hists, int max_rows);
89
90void hists__inc_nr_events(struct hists *self, u32 type);
91size_t hists__fprintf_nr_events(struct hists *self, FILE *fp);
92
93size_t hists__fprintf(struct hists *self, struct hists *pair,
94 bool show_displacement, bool show_header,
95 int max_rows, int max_cols, FILE *fp);
96
97int hist_entry__inc_addr_samples(struct hist_entry *self, int evidx, u64 addr);
98int hist_entry__annotate(struct hist_entry *self, size_t privsize);
99
100void hists__filter_by_dso(struct hists *hists);
101void hists__filter_by_thread(struct hists *hists);
102
103u16 hists__col_len(struct hists *self, enum hist_column col);
104void hists__set_col_len(struct hists *self, enum hist_column col, u16 len);
105bool hists__new_col_len(struct hists *self, enum hist_column col, u16 len);
106
107struct perf_evlist;
108
109#ifdef NO_NEWT_SUPPORT
110static inline
111int perf_evlist__tui_browse_hists(struct perf_evlist *evlist __used,
112 const char *help __used,
113 void(*timer)(void *arg) __used,
114 void *arg __used,
115 int refresh __used)
116{
117 return 0;
118}
119
120static inline int hist_entry__tui_annotate(struct hist_entry *self __used,
121 int evidx __used,
122 int nr_events __used,
123 void(*timer)(void *arg) __used,
124 void *arg __used,
125 int delay_secs __used)
126{
127 return 0;
128}
129#define K_LEFT -1
130#define K_RIGHT -2
131#else
132#include "ui/keysyms.h"
133int hist_entry__tui_annotate(struct hist_entry *he, int evidx, int nr_events,
134 void(*timer)(void *arg), void *arg, int delay_secs);
135
136int perf_evlist__tui_browse_hists(struct perf_evlist *evlist, const char *help,
137 void(*timer)(void *arg), void *arg,
138 int refresh);
139#endif
140
141unsigned int hists__sort_list_width(struct hists *self);
142
143#endif /* __PERF_HIST_H */