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