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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 <stdio.h> // FILE
9#include <stdbool.h>
10#include <linux/bitmap.h>
11#include <linux/types.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_DIR_FORMAT,
43 HEADER_BPF_PROG_INFO,
44 HEADER_BPF_BTF,
45 HEADER_COMPRESSED,
46 HEADER_LAST_FEATURE,
47 HEADER_FEAT_BITS = 256,
48};
49
50enum perf_header_version {
51 PERF_HEADER_VERSION_1,
52 PERF_HEADER_VERSION_2,
53};
54
55enum perf_dir_version {
56 PERF_DIR_VERSION = 1,
57};
58
59struct perf_file_section {
60 u64 offset;
61 u64 size;
62};
63
64struct perf_file_header {
65 u64 magic;
66 u64 size;
67 u64 attr_size;
68 struct perf_file_section attrs;
69 struct perf_file_section data;
70 /* event_types is ignored */
71 struct perf_file_section event_types;
72 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
73};
74
75struct perf_pipe_file_header {
76 u64 magic;
77 u64 size;
78};
79
80struct perf_header;
81
82int perf_file_header__read(struct perf_file_header *header,
83 struct perf_header *ph, int fd);
84
85struct perf_header {
86 enum perf_header_version version;
87 bool needs_swap;
88 u64 data_offset;
89 u64 data_size;
90 u64 feat_offset;
91 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
92 struct perf_env env;
93};
94
95struct feat_fd {
96 struct perf_header *ph;
97 int fd;
98 void *buf; /* Either buf != NULL or fd >= 0 */
99 ssize_t offset;
100 size_t size;
101 struct evsel *events;
102};
103
104struct perf_header_feature_ops {
105 int (*write)(struct feat_fd *ff, struct evlist *evlist);
106 void (*print)(struct feat_fd *ff, FILE *fp);
107 int (*process)(struct feat_fd *ff, void *data);
108 const char *name;
109 bool full_only;
110 bool synthesize;
111};
112
113struct evlist;
114struct perf_session;
115struct perf_tool;
116union perf_event;
117
118int perf_session__read_header(struct perf_session *session);
119int perf_session__write_header(struct perf_session *session,
120 struct evlist *evlist,
121 int fd, bool at_exit);
122int perf_header__write_pipe(int fd);
123
124void perf_header__set_feat(struct perf_header *header, int feat);
125void perf_header__clear_feat(struct perf_header *header, int feat);
126bool perf_header__has_feat(const struct perf_header *header, int feat);
127
128int perf_header__set_cmdline(int argc, const char **argv);
129
130int perf_header__process_sections(struct perf_header *header, int fd,
131 void *data,
132 int (*process)(struct perf_file_section *section,
133 struct perf_header *ph,
134 int feat, int fd, void *data));
135
136int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full);
137
138int perf_event__process_feature(struct perf_session *session,
139 union perf_event *event);
140int perf_event__process_attr(struct perf_tool *tool, union perf_event *event,
141 struct evlist **pevlist);
142int perf_event__process_event_update(struct perf_tool *tool,
143 union perf_event *event,
144 struct evlist **pevlist);
145size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp);
146int perf_event__process_tracing_data(struct perf_session *session,
147 union perf_event *event);
148int perf_event__process_build_id(struct perf_session *session,
149 union perf_event *event);
150bool is_perf_magic(u64 magic);
151
152#define NAME_ALIGN 64
153
154struct feat_fd;
155
156int do_write(struct feat_fd *fd, const void *buf, size_t size);
157
158int write_padded(struct feat_fd *fd, const void *bf,
159 size_t count, size_t count_aligned);
160
161/*
162 * arch specific callback
163 */
164int get_cpuid(char *buffer, size_t sz);
165
166char *get_cpuid_str(struct perf_pmu *pmu __maybe_unused);
167int strcmp_cpuid_str(const char *s1, const char *s2);
168#endif /* __PERF_HEADER_H */
1#ifndef __PERF_HEADER_H
2#define __PERF_HEADER_H
3
4#include "../../../include/linux/perf_event.h"
5#include <sys/types.h>
6#include <stdbool.h>
7#include "types.h"
8#include "event.h"
9
10#include <linux/bitmap.h>
11
12enum {
13 HEADER_RESERVED = 0, /* always cleared */
14 HEADER_FIRST_FEATURE = 1,
15 HEADER_TRACING_DATA = 1,
16 HEADER_BUILD_ID,
17
18 HEADER_HOSTNAME,
19 HEADER_OSRELEASE,
20 HEADER_VERSION,
21 HEADER_ARCH,
22 HEADER_NRCPUS,
23 HEADER_CPUDESC,
24 HEADER_CPUID,
25 HEADER_TOTAL_MEM,
26 HEADER_CMDLINE,
27 HEADER_EVENT_DESC,
28 HEADER_CPU_TOPOLOGY,
29 HEADER_NUMA_TOPOLOGY,
30 HEADER_BRANCH_STACK,
31 HEADER_LAST_FEATURE,
32 HEADER_FEAT_BITS = 256,
33};
34
35struct perf_file_section {
36 u64 offset;
37 u64 size;
38};
39
40struct perf_file_header {
41 u64 magic;
42 u64 size;
43 u64 attr_size;
44 struct perf_file_section attrs;
45 struct perf_file_section data;
46 struct perf_file_section event_types;
47 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
48};
49
50struct perf_pipe_file_header {
51 u64 magic;
52 u64 size;
53};
54
55struct perf_header;
56
57int perf_file_header__read(struct perf_file_header *header,
58 struct perf_header *ph, int fd);
59
60struct perf_header {
61 int frozen;
62 bool needs_swap;
63 s64 attr_offset;
64 u64 data_offset;
65 u64 data_size;
66 u64 event_offset;
67 u64 event_size;
68 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
69};
70
71struct perf_evlist;
72struct perf_session;
73
74int perf_session__read_header(struct perf_session *session, int fd);
75int perf_session__write_header(struct perf_session *session,
76 struct perf_evlist *evlist,
77 int fd, bool at_exit);
78int perf_header__write_pipe(int fd);
79
80int perf_header__push_event(u64 id, const char *name);
81char *perf_header__find_event(u64 id);
82
83void perf_header__set_feat(struct perf_header *header, int feat);
84void perf_header__clear_feat(struct perf_header *header, int feat);
85bool perf_header__has_feat(const struct perf_header *header, int feat);
86
87int perf_header__set_cmdline(int argc, const char **argv);
88
89int perf_header__process_sections(struct perf_header *header, int fd,
90 void *data,
91 int (*process)(struct perf_file_section *section,
92 struct perf_header *ph,
93 int feat, int fd, void *data));
94
95int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full);
96
97int build_id_cache__add_s(const char *sbuild_id, const char *debugdir,
98 const char *name, bool is_kallsyms);
99int build_id_cache__remove_s(const char *sbuild_id, const char *debugdir);
100
101int perf_event__synthesize_attr(struct perf_tool *tool,
102 struct perf_event_attr *attr, u16 ids, u64 *id,
103 perf_event__handler_t process);
104int perf_event__synthesize_attrs(struct perf_tool *tool,
105 struct perf_session *session,
106 perf_event__handler_t process);
107int perf_event__process_attr(union perf_event *event, struct perf_evlist **pevlist);
108
109int perf_event__synthesize_event_type(struct perf_tool *tool,
110 u64 event_id, char *name,
111 perf_event__handler_t process,
112 struct machine *machine);
113int perf_event__synthesize_event_types(struct perf_tool *tool,
114 perf_event__handler_t process,
115 struct machine *machine);
116int perf_event__process_event_type(struct perf_tool *tool,
117 union perf_event *event);
118
119int perf_event__synthesize_tracing_data(struct perf_tool *tool,
120 int fd, struct perf_evlist *evlist,
121 perf_event__handler_t process);
122int perf_event__process_tracing_data(union perf_event *event,
123 struct perf_session *session);
124
125int perf_event__synthesize_build_id(struct perf_tool *tool,
126 struct dso *pos, u16 misc,
127 perf_event__handler_t process,
128 struct machine *machine);
129int perf_event__process_build_id(struct perf_tool *tool,
130 union perf_event *event,
131 struct perf_session *session);
132
133/*
134 * arch specific callback
135 */
136int get_cpuid(char *buffer, size_t sz);
137
138#endif /* __PERF_HEADER_H */