tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifndef __PERF_EVSEL_H
2#define __PERF_EVSEL_H 1
3
4#include <linux/list.h>
5#include <stdbool.h>
6#include <stddef.h>
7#include <linux/perf_event.h>
8#include "types.h"
9#include "xyarray.h"
10#include "cgroup.h"
11#include "hist.h"
12
13struct perf_counts_values {
14 union {
15 struct {
16 u64 val;
17 u64 ena;
18 u64 run;
19 };
20 u64 values[3];
21 };
22};
23
24struct perf_counts {
25 s8 scaled;
26 struct perf_counts_values aggr;
27 struct perf_counts_values cpu[];
28};
29
30struct perf_evsel;
31
32/*
33 * Per fd, to map back from PERF_SAMPLE_ID to evsel, only used when there are
34 * more than one entry in the evlist.
35 */
36struct perf_sample_id {
37 struct hlist_node node;
38 u64 id;
39 struct perf_evsel *evsel;
40};
41
42/** struct perf_evsel - event selector
43 *
44 * @name - Can be set to retain the original event name passed by the user,
45 * so that when showing results in tools such as 'perf stat', we
46 * show the name used, not some alias.
47 */
48struct perf_evsel {
49 struct list_head node;
50 struct perf_event_attr attr;
51 char *filter;
52 struct xyarray *fd;
53 struct xyarray *sample_id;
54 u64 *id;
55 struct perf_counts *counts;
56 int idx;
57 u32 ids;
58 struct hists hists;
59 char *name;
60 struct event_format *tp_format;
61 union {
62 void *priv;
63 off_t id_offset;
64 };
65 struct cgroup_sel *cgrp;
66 struct {
67 void *func;
68 void *data;
69 } handler;
70 struct cpu_map *cpus;
71 unsigned int sample_size;
72 bool supported;
73 bool needs_swap;
74 /* parse modifier helper */
75 int exclude_GH;
76 struct perf_evsel *leader;
77 char *group_name;
78};
79
80struct cpu_map;
81struct thread_map;
82struct perf_evlist;
83struct perf_record_opts;
84
85struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr, int idx);
86struct perf_evsel *perf_evsel__newtp(const char *sys, const char *name, int idx);
87
88struct event_format *event_format__new(const char *sys, const char *name);
89
90void perf_evsel__init(struct perf_evsel *evsel,
91 struct perf_event_attr *attr, int idx);
92void perf_evsel__exit(struct perf_evsel *evsel);
93void perf_evsel__delete(struct perf_evsel *evsel);
94
95void perf_evsel__config(struct perf_evsel *evsel,
96 struct perf_record_opts *opts);
97
98bool perf_evsel__is_cache_op_valid(u8 type, u8 op);
99
100#define PERF_EVSEL__MAX_ALIASES 8
101
102extern const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX]
103 [PERF_EVSEL__MAX_ALIASES];
104extern const char *perf_evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX]
105 [PERF_EVSEL__MAX_ALIASES];
106extern const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX]
107 [PERF_EVSEL__MAX_ALIASES];
108extern const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX];
109extern const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX];
110int __perf_evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result,
111 char *bf, size_t size);
112const char *perf_evsel__name(struct perf_evsel *evsel);
113
114int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads);
115int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads);
116int perf_evsel__alloc_counts(struct perf_evsel *evsel, int ncpus);
117void perf_evsel__free_fd(struct perf_evsel *evsel);
118void perf_evsel__free_id(struct perf_evsel *evsel);
119void perf_evsel__close_fd(struct perf_evsel *evsel, int ncpus, int nthreads);
120
121int perf_evsel__set_filter(struct perf_evsel *evsel, int ncpus, int nthreads,
122 const char *filter);
123
124int perf_evsel__open_per_cpu(struct perf_evsel *evsel,
125 struct cpu_map *cpus);
126int perf_evsel__open_per_thread(struct perf_evsel *evsel,
127 struct thread_map *threads);
128int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus,
129 struct thread_map *threads);
130void perf_evsel__close(struct perf_evsel *evsel, int ncpus, int nthreads);
131
132struct perf_sample;
133
134void *perf_evsel__rawptr(struct perf_evsel *evsel, struct perf_sample *sample,
135 const char *name);
136u64 perf_evsel__intval(struct perf_evsel *evsel, struct perf_sample *sample,
137 const char *name);
138
139static inline char *perf_evsel__strval(struct perf_evsel *evsel,
140 struct perf_sample *sample,
141 const char *name)
142{
143 return perf_evsel__rawptr(evsel, sample, name);
144}
145
146struct format_field;
147
148struct format_field *perf_evsel__field(struct perf_evsel *evsel, const char *name);
149
150#define perf_evsel__match(evsel, t, c) \
151 (evsel->attr.type == PERF_TYPE_##t && \
152 evsel->attr.config == PERF_COUNT_##c)
153
154static inline bool perf_evsel__match2(struct perf_evsel *e1,
155 struct perf_evsel *e2)
156{
157 return (e1->attr.type == e2->attr.type) &&
158 (e1->attr.config == e2->attr.config);
159}
160
161int __perf_evsel__read_on_cpu(struct perf_evsel *evsel,
162 int cpu, int thread, bool scale);
163
164/**
165 * perf_evsel__read_on_cpu - Read out the results on a CPU and thread
166 *
167 * @evsel - event selector to read value
168 * @cpu - CPU of interest
169 * @thread - thread of interest
170 */
171static inline int perf_evsel__read_on_cpu(struct perf_evsel *evsel,
172 int cpu, int thread)
173{
174 return __perf_evsel__read_on_cpu(evsel, cpu, thread, false);
175}
176
177/**
178 * perf_evsel__read_on_cpu_scaled - Read out the results on a CPU and thread, scaled
179 *
180 * @evsel - event selector to read value
181 * @cpu - CPU of interest
182 * @thread - thread of interest
183 */
184static inline int perf_evsel__read_on_cpu_scaled(struct perf_evsel *evsel,
185 int cpu, int thread)
186{
187 return __perf_evsel__read_on_cpu(evsel, cpu, thread, true);
188}
189
190int __perf_evsel__read(struct perf_evsel *evsel, int ncpus, int nthreads,
191 bool scale);
192
193/**
194 * perf_evsel__read - Read the aggregate results on all CPUs
195 *
196 * @evsel - event selector to read value
197 * @ncpus - Number of cpus affected, from zero
198 * @nthreads - Number of threads affected, from zero
199 */
200static inline int perf_evsel__read(struct perf_evsel *evsel,
201 int ncpus, int nthreads)
202{
203 return __perf_evsel__read(evsel, ncpus, nthreads, false);
204}
205
206/**
207 * perf_evsel__read_scaled - Read the aggregate results on all CPUs, scaled
208 *
209 * @evsel - event selector to read value
210 * @ncpus - Number of cpus affected, from zero
211 * @nthreads - Number of threads affected, from zero
212 */
213static inline int perf_evsel__read_scaled(struct perf_evsel *evsel,
214 int ncpus, int nthreads)
215{
216 return __perf_evsel__read(evsel, ncpus, nthreads, true);
217}
218
219void hists__init(struct hists *hists);
220
221int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event,
222 struct perf_sample *sample);
223
224static inline struct perf_evsel *perf_evsel__next(struct perf_evsel *evsel)
225{
226 return list_entry(evsel->node.next, struct perf_evsel, node);
227}
228
229static inline bool perf_evsel__is_group_member(const struct perf_evsel *evsel)
230{
231 return evsel->leader != NULL;
232}
233#endif /* __PERF_EVSEL_H */