1 /* SPDX-License-Identifier: GPL-2.0 */ 1
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
15 enum {
16 HEADER_RESERVED = 0, /* alw
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
54 enum perf_header_version {
55 PERF_HEADER_VERSION_1,
56 PERF_HEADER_VERSION_2,
57 };
58
59 struct perf_file_section {
60 u64 offset;
61 u64 size;
62 };
63
64 /**
65 * struct perf_file_header: Header representat
66 */
67 struct perf_file_header {
68 /** @magic: Holds "PERFILE2". */
69 u64 magic;
70 /** @size: Size of this header - sizeo
71 u64 size;
72 /**
73 * @attr_size: Size of attrs entries -
74 * sizeof(struct perf_file_section).
75 */
76 u64 attr_s
77 /** @attrs: Offset and size of file se
78 struct perf_file_section attrs;
79 /** @data: Offset and size of file sec
80 struct perf_file_section data;
81 /** @event_types: Ignored. */
82 struct perf_file_section event_
83 /**
84 * @adds_features: Bitmap of features.
85 */
86 DECLARE_BITMAP(adds_features, HEADER_F
87 };
88
89 struct perf_pipe_file_header {
90 u64 magic;
91 u64 size;
92 };
93
94 struct perf_header;
95
96 int perf_file_header__read(struct perf_file_he
97 struct perf_header
98
99 struct perf_header {
100 enum perf_header_version versio
101 bool needs_
102 u64 data_o
103 u64 data_s
104 u64 feat_o
105 DECLARE_BITMAP(adds_features, HEADER_F
106 struct perf_env env;
107 };
108
109 struct feat_fd {
110 struct perf_header *ph;
111 int fd;
112 void *buf; /* Eit
113 ssize_t offset;
114 size_t size;
115 struct evsel *events;
116 };
117
118 struct perf_header_feature_ops {
119 int (*write)(struct feat_fd *ff
120 void (*print)(struct feat_fd *ff
121 int (*process)(struct feat_fd *
122 const char *name;
123 bool full_only;
124 bool synthesize;
125 };
126
127 struct evlist;
128 struct perf_session;
129 struct perf_tool;
130 union perf_event;
131
132 extern const char perf_version_string[];
133
134 int perf_session__read_header(struct perf_sess
135 int perf_session__write_header(struct perf_ses
136 struct evlist *
137 int fd, bool at
138 int perf_header__write_pipe(int fd);
139
140 /* feat_writer writes a feature section to out
141 struct feat_writer {
142 int (*write)(struct feat_writer *fw, v
143 };
144
145 /* feat_copier copies a feature section using
146 struct feat_copier {
147 int (*copy)(struct feat_copier *fc, in
148 };
149
150 int perf_session__inject_header(struct perf_se
151 struct evlist
152 int fd,
153 struct feat_co
154 bool write_att
155
156 size_t perf_session__data_offset(const struct
157
158 void perf_header__set_feat(struct perf_header
159 void perf_header__clear_feat(struct perf_heade
160 bool perf_header__has_feat(const struct perf_h
161
162 int perf_header__set_cmdline(int argc, const c
163
164 int perf_header__process_sections(struct perf_
165 void *data,
166 int (*proces
167 struct perf_
168 int feat, in
169
170 int perf_header__fprintf_info(struct perf_sess
171
172 int perf_event__process_feature(struct perf_se
173 union perf_eve
174 int perf_event__process_attr(const struct perf
175 struct evlist **p
176 int perf_event__process_event_update(const str
177 union per
178 struct ev
179 size_t perf_event__fprintf_event_update(union
180 #ifdef HAVE_LIBTRACEEVENT
181 int perf_event__process_tracing_data(struct pe
182 union per
183 #endif
184 int perf_event__process_build_id(struct perf_s
185 union perf_ev
186 bool is_perf_magic(u64 magic);
187
188 #define NAME_ALIGN 64
189
190 struct feat_fd;
191
192 int do_write(struct feat_fd *fd, const void *b
193
194 int write_padded(struct feat_fd *fd, const voi
195 size_t count, size_t count_al
196
197 #define MAX_CACHE_LVL 4
198
199 int is_cpu_online(unsigned int cpu);
200 int build_caches_for_cpu(u32 cpu, struct cpu_c
201
202 /*
203 * arch specific callback
204 */
205 int get_cpuid(char *buffer, size_t sz);
206
207 char *get_cpuid_str(struct perf_pmu *pmu __may
208 int strcmp_cpuid_str(const char *s1, const cha
209 #endif /* __PERF_HEADER_H */
210
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