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/stddef.h>
6#include <linux/perf_event.h>
7#include <sys/types.h>
8#include <stdbool.h>
9#include <linux/bitmap.h>
10#include <linux/types.h>
11#include "event.h"
12#include "env.h"
13#include "pmu.h"
14
15enum {
16 HEADER_RESERVED = 0, /* always cleared */
17 HEADER_FIRST_FEATURE = 1,
18 HEADER_TRACING_DATA = 1,
19 HEADER_BUILD_ID,
20
21 HEADER_HOSTNAME,
22 HEADER_OSRELEASE,
23 HEADER_VERSION,
24 HEADER_ARCH,
25 HEADER_NRCPUS,
26 HEADER_CPUDESC,
27 HEADER_CPUID,
28 HEADER_TOTAL_MEM,
29 HEADER_CMDLINE,
30 HEADER_EVENT_DESC,
31 HEADER_CPU_TOPOLOGY,
32 HEADER_NUMA_TOPOLOGY,
33 HEADER_BRANCH_STACK,
34 HEADER_PMU_MAPPINGS,
35 HEADER_GROUP_DESC,
36 HEADER_AUXTRACE,
37 HEADER_STAT,
38 HEADER_CACHE,
39 HEADER_SAMPLE_TIME,
40 HEADER_MEM_TOPOLOGY,
41 HEADER_CLOCKID,
42 HEADER_LAST_FEATURE,
43 HEADER_FEAT_BITS = 256,
44};
45
46enum perf_header_version {
47 PERF_HEADER_VERSION_1,
48 PERF_HEADER_VERSION_2,
49};
50
51struct perf_file_section {
52 u64 offset;
53 u64 size;
54};
55
56struct perf_file_header {
57 u64 magic;
58 u64 size;
59 u64 attr_size;
60 struct perf_file_section attrs;
61 struct perf_file_section data;
62 /* event_types is ignored */
63 struct perf_file_section event_types;
64 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
65};
66
67struct perf_pipe_file_header {
68 u64 magic;
69 u64 size;
70};
71
72struct perf_header;
73
74int perf_file_header__read(struct perf_file_header *header,
75 struct perf_header *ph, int fd);
76
77struct perf_header {
78 enum perf_header_version version;
79 bool needs_swap;
80 u64 data_offset;
81 u64 data_size;
82 u64 feat_offset;
83 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
84 struct perf_env env;
85};
86
87struct perf_evlist;
88struct perf_session;
89
90int perf_session__read_header(struct perf_session *session);
91int perf_session__write_header(struct perf_session *session,
92 struct perf_evlist *evlist,
93 int fd, bool at_exit);
94int perf_header__write_pipe(int fd);
95
96void perf_header__set_feat(struct perf_header *header, int feat);
97void perf_header__clear_feat(struct perf_header *header, int feat);
98bool perf_header__has_feat(const struct perf_header *header, int feat);
99
100int perf_header__set_cmdline(int argc, const char **argv);
101
102int perf_header__process_sections(struct perf_header *header, int fd,
103 void *data,
104 int (*process)(struct perf_file_section *section,
105 struct perf_header *ph,
106 int feat, int fd, void *data));
107
108int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full);
109
110int perf_event__synthesize_features(struct perf_tool *tool,
111 struct perf_session *session,
112 struct perf_evlist *evlist,
113 perf_event__handler_t process);
114
115int perf_event__synthesize_extra_attr(struct perf_tool *tool,
116 struct perf_evlist *evsel_list,
117 perf_event__handler_t process,
118 bool is_pipe);
119
120int perf_event__process_feature(struct perf_session *session,
121 union perf_event *event);
122
123int perf_event__synthesize_attr(struct perf_tool *tool,
124 struct perf_event_attr *attr, u32 ids, u64 *id,
125 perf_event__handler_t process);
126int perf_event__synthesize_attrs(struct perf_tool *tool,
127 struct perf_evlist *evlist,
128 perf_event__handler_t process);
129int perf_event__synthesize_event_update_unit(struct perf_tool *tool,
130 struct perf_evsel *evsel,
131 perf_event__handler_t process);
132int perf_event__synthesize_event_update_scale(struct perf_tool *tool,
133 struct perf_evsel *evsel,
134 perf_event__handler_t process);
135int perf_event__synthesize_event_update_name(struct perf_tool *tool,
136 struct perf_evsel *evsel,
137 perf_event__handler_t process);
138int perf_event__synthesize_event_update_cpus(struct perf_tool *tool,
139 struct perf_evsel *evsel,
140 perf_event__handler_t process);
141int perf_event__process_attr(struct perf_tool *tool, union perf_event *event,
142 struct perf_evlist **pevlist);
143int perf_event__process_event_update(struct perf_tool *tool,
144 union perf_event *event,
145 struct perf_evlist **pevlist);
146size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp);
147
148int perf_event__synthesize_tracing_data(struct perf_tool *tool,
149 int fd, struct perf_evlist *evlist,
150 perf_event__handler_t process);
151int perf_event__process_tracing_data(struct perf_session *session,
152 union perf_event *event);
153
154int perf_event__synthesize_build_id(struct perf_tool *tool,
155 struct dso *pos, u16 misc,
156 perf_event__handler_t process,
157 struct machine *machine);
158int perf_event__process_build_id(struct perf_session *session,
159 union perf_event *event);
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);
177int strcmp_cpuid_str(const char *s1, const char *s2);
178#endif /* __PERF_HEADER_H */