Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __PERF_HEADER_H
3#define __PERF_HEADER_H
4
5#include <linux/perf_event.h>
6#include <sys/types.h>
7#include <stdbool.h>
8#include <linux/bitmap.h>
9#include <linux/types.h>
10#include "event.h"
11#include "env.h"
12#include "pmu.h"
13
14enum {
15 HEADER_RESERVED = 0, /* always cleared */
16 HEADER_FIRST_FEATURE = 1,
17 HEADER_TRACING_DATA = 1,
18 HEADER_BUILD_ID,
19
20 HEADER_HOSTNAME,
21 HEADER_OSRELEASE,
22 HEADER_VERSION,
23 HEADER_ARCH,
24 HEADER_NRCPUS,
25 HEADER_CPUDESC,
26 HEADER_CPUID,
27 HEADER_TOTAL_MEM,
28 HEADER_CMDLINE,
29 HEADER_EVENT_DESC,
30 HEADER_CPU_TOPOLOGY,
31 HEADER_NUMA_TOPOLOGY,
32 HEADER_BRANCH_STACK,
33 HEADER_PMU_MAPPINGS,
34 HEADER_GROUP_DESC,
35 HEADER_AUXTRACE,
36 HEADER_STAT,
37 HEADER_CACHE,
38 HEADER_SAMPLE_TIME,
39 HEADER_LAST_FEATURE,
40 HEADER_FEAT_BITS = 256,
41};
42
43enum perf_header_version {
44 PERF_HEADER_VERSION_1,
45 PERF_HEADER_VERSION_2,
46};
47
48struct perf_file_section {
49 u64 offset;
50 u64 size;
51};
52
53struct perf_file_header {
54 u64 magic;
55 u64 size;
56 u64 attr_size;
57 struct perf_file_section attrs;
58 struct perf_file_section data;
59 /* event_types is ignored */
60 struct perf_file_section event_types;
61 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
62};
63
64struct perf_pipe_file_header {
65 u64 magic;
66 u64 size;
67};
68
69struct perf_header;
70
71int perf_file_header__read(struct perf_file_header *header,
72 struct perf_header *ph, int fd);
73
74struct perf_header {
75 enum perf_header_version version;
76 bool needs_swap;
77 u64 data_offset;
78 u64 data_size;
79 u64 feat_offset;
80 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
81 struct perf_env env;
82};
83
84struct perf_evlist;
85struct perf_session;
86
87int perf_session__read_header(struct perf_session *session);
88int perf_session__write_header(struct perf_session *session,
89 struct perf_evlist *evlist,
90 int fd, bool at_exit);
91int perf_header__write_pipe(int fd);
92
93void perf_header__set_feat(struct perf_header *header, int feat);
94void perf_header__clear_feat(struct perf_header *header, int feat);
95bool perf_header__has_feat(const struct perf_header *header, int feat);
96
97int perf_header__set_cmdline(int argc, const char **argv);
98
99int perf_header__process_sections(struct perf_header *header, int fd,
100 void *data,
101 int (*process)(struct perf_file_section *section,
102 struct perf_header *ph,
103 int feat, int fd, void *data));
104
105int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full);
106
107int perf_event__synthesize_features(struct perf_tool *tool,
108 struct perf_session *session,
109 struct perf_evlist *evlist,
110 perf_event__handler_t process);
111
112int perf_event__synthesize_extra_attr(struct perf_tool *tool,
113 struct perf_evlist *evsel_list,
114 perf_event__handler_t process,
115 bool is_pipe);
116
117int perf_event__process_feature(struct perf_tool *tool,
118 union perf_event *event,
119 struct perf_session *session);
120
121int perf_event__synthesize_attr(struct perf_tool *tool,
122 struct perf_event_attr *attr, u32 ids, u64 *id,
123 perf_event__handler_t process);
124int perf_event__synthesize_attrs(struct perf_tool *tool,
125 struct perf_session *session,
126 perf_event__handler_t process);
127int perf_event__synthesize_event_update_unit(struct perf_tool *tool,
128 struct perf_evsel *evsel,
129 perf_event__handler_t process);
130int perf_event__synthesize_event_update_scale(struct perf_tool *tool,
131 struct perf_evsel *evsel,
132 perf_event__handler_t process);
133int perf_event__synthesize_event_update_name(struct perf_tool *tool,
134 struct perf_evsel *evsel,
135 perf_event__handler_t process);
136int perf_event__synthesize_event_update_cpus(struct perf_tool *tool,
137 struct perf_evsel *evsel,
138 perf_event__handler_t process);
139int perf_event__process_attr(struct perf_tool *tool, union perf_event *event,
140 struct perf_evlist **pevlist);
141int perf_event__process_event_update(struct perf_tool *tool,
142 union perf_event *event,
143 struct perf_evlist **pevlist);
144size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp);
145
146int perf_event__synthesize_tracing_data(struct perf_tool *tool,
147 int fd, struct perf_evlist *evlist,
148 perf_event__handler_t process);
149int perf_event__process_tracing_data(struct perf_tool *tool,
150 union perf_event *event,
151 struct perf_session *session);
152
153int perf_event__synthesize_build_id(struct perf_tool *tool,
154 struct dso *pos, u16 misc,
155 perf_event__handler_t process,
156 struct machine *machine);
157int perf_event__process_build_id(struct perf_tool *tool,
158 union perf_event *event,
159 struct perf_session *session);
160bool is_perf_magic(u64 magic);
161
162#define NAME_ALIGN 64
163
164struct feat_fd;
165
166int do_write(struct feat_fd *fd, const void *buf, size_t size);
167
168int write_padded(struct feat_fd *fd, const void *bf,
169 size_t count, size_t count_aligned);
170
171/*
172 * arch specific callback
173 */
174int get_cpuid(char *buffer, size_t sz);
175
176char *get_cpuid_str(struct perf_pmu *pmu __maybe_unused);
177#endif /* __PERF_HEADER_H */