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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_CPU_PMU_CAPS,
47 HEADER_CLOCK_DATA,
48 HEADER_HYBRID_TOPOLOGY,
49 HEADER_PMU_CAPS,
50 HEADER_LAST_FEATURE,
51 HEADER_FEAT_BITS = 256,
52};
53
54enum perf_header_version {
55 PERF_HEADER_VERSION_1,
56 PERF_HEADER_VERSION_2,
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
118extern const char perf_version_string[];
119
120int perf_session__read_header(struct perf_session *session, int repipe_fd);
121int perf_session__write_header(struct perf_session *session,
122 struct evlist *evlist,
123 int fd, bool at_exit);
124int perf_header__write_pipe(int fd);
125
126/* feat_writer writes a feature section to output */
127struct feat_writer {
128 int (*write)(struct feat_writer *fw, void *buf, size_t sz);
129};
130
131/* feat_copier copies a feature section using feat_writer to output */
132struct feat_copier {
133 int (*copy)(struct feat_copier *fc, int feat, struct feat_writer *fw);
134};
135
136int perf_session__inject_header(struct perf_session *session,
137 struct evlist *evlist,
138 int fd,
139 struct feat_copier *fc);
140
141size_t perf_session__data_offset(const struct evlist *evlist);
142
143void perf_header__set_feat(struct perf_header *header, int feat);
144void perf_header__clear_feat(struct perf_header *header, int feat);
145bool perf_header__has_feat(const struct perf_header *header, int feat);
146
147int perf_header__set_cmdline(int argc, const char **argv);
148
149int perf_header__process_sections(struct perf_header *header, int fd,
150 void *data,
151 int (*process)(struct perf_file_section *section,
152 struct perf_header *ph,
153 int feat, int fd, void *data));
154
155int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full);
156
157int perf_event__process_feature(struct perf_session *session,
158 union perf_event *event);
159int perf_event__process_attr(struct perf_tool *tool, union perf_event *event,
160 struct evlist **pevlist);
161int perf_event__process_event_update(struct perf_tool *tool,
162 union perf_event *event,
163 struct evlist **pevlist);
164size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp);
165#ifdef HAVE_LIBTRACEEVENT
166int perf_event__process_tracing_data(struct perf_session *session,
167 union perf_event *event);
168#endif
169int perf_event__process_build_id(struct perf_session *session,
170 union perf_event *event);
171bool is_perf_magic(u64 magic);
172
173#define NAME_ALIGN 64
174
175struct feat_fd;
176
177int do_write(struct feat_fd *fd, const void *buf, size_t size);
178
179int write_padded(struct feat_fd *fd, const void *bf,
180 size_t count, size_t count_aligned);
181
182#define MAX_CACHE_LVL 4
183
184int is_cpu_online(unsigned int cpu);
185int build_caches_for_cpu(u32 cpu, struct cpu_cache_level caches[], u32 *cntp);
186
187/*
188 * arch specific callback
189 */
190int get_cpuid(char *buffer, size_t sz);
191
192char *get_cpuid_str(struct perf_pmu *pmu __maybe_unused);
193int strcmp_cpuid_str(const char *s1, const char *s2);
194#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_TRACE_INFO = 1,
14 HEADER_BUILD_ID,
15 HEADER_LAST_FEATURE,
16};
17
18#define HEADER_FEAT_BITS 256
19
20struct perf_file_section {
21 u64 offset;
22 u64 size;
23};
24
25struct perf_file_header {
26 u64 magic;
27 u64 size;
28 u64 attr_size;
29 struct perf_file_section attrs;
30 struct perf_file_section data;
31 struct perf_file_section event_types;
32 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
33};
34
35struct perf_pipe_file_header {
36 u64 magic;
37 u64 size;
38};
39
40struct perf_header;
41
42int perf_file_header__read(struct perf_file_header *header,
43 struct perf_header *ph, int fd);
44
45struct perf_header {
46 int frozen;
47 bool needs_swap;
48 s64 attr_offset;
49 u64 data_offset;
50 u64 data_size;
51 u64 event_offset;
52 u64 event_size;
53 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
54};
55
56struct perf_evlist;
57
58int perf_session__read_header(struct perf_session *session, int fd);
59int perf_session__write_header(struct perf_session *session,
60 struct perf_evlist *evlist,
61 int fd, bool at_exit);
62int perf_header__write_pipe(int fd);
63
64int perf_header__push_event(u64 id, const char *name);
65char *perf_header__find_event(u64 id);
66
67void perf_header__set_feat(struct perf_header *header, int feat);
68void perf_header__clear_feat(struct perf_header *header, int feat);
69bool perf_header__has_feat(const struct perf_header *header, int feat);
70
71int perf_header__process_sections(struct perf_header *header, int fd,
72 int (*process)(struct perf_file_section *section,
73 struct perf_header *ph,
74 int feat, int fd));
75
76int build_id_cache__add_s(const char *sbuild_id, const char *debugdir,
77 const char *name, bool is_kallsyms);
78int build_id_cache__remove_s(const char *sbuild_id, const char *debugdir);
79
80int perf_event__synthesize_attr(struct perf_event_attr *attr, u16 ids, u64 *id,
81 perf_event__handler_t process,
82 struct perf_session *session);
83int perf_session__synthesize_attrs(struct perf_session *session,
84 perf_event__handler_t process);
85int perf_event__process_attr(union perf_event *event, struct perf_session *session);
86
87int perf_event__synthesize_event_type(u64 event_id, char *name,
88 perf_event__handler_t process,
89 struct perf_session *session);
90int perf_event__synthesize_event_types(perf_event__handler_t process,
91 struct perf_session *session);
92int perf_event__process_event_type(union perf_event *event,
93 struct perf_session *session);
94
95int perf_event__synthesize_tracing_data(int fd, struct perf_evlist *evlist,
96 perf_event__handler_t process,
97 struct perf_session *session);
98int perf_event__process_tracing_data(union perf_event *event,
99 struct perf_session *session);
100
101int perf_event__synthesize_build_id(struct dso *pos, u16 misc,
102 perf_event__handler_t process,
103 struct machine *machine,
104 struct perf_session *session);
105int perf_event__process_build_id(union perf_event *event,
106 struct perf_session *session);
107#endif /* __PERF_HEADER_H */