1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __PERF_HEADER_H
3 #define __PERF_HEADER_H
5 #include <linux/perf_event.h>
8 #include <linux/bitmap.h>
9 #include <linux/types.h>
14 HEADER_RESERVED
= 0, /* always cleared */
15 HEADER_FIRST_FEATURE
= 1,
16 HEADER_TRACING_DATA
= 1,
38 HEADER_FEAT_BITS
= 256,
41 enum perf_header_version
{
42 PERF_HEADER_VERSION_1
,
43 PERF_HEADER_VERSION_2
,
46 struct perf_file_section
{
51 struct perf_file_header
{
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
);
62 struct perf_pipe_file_header
{
69 int perf_file_header__read(struct perf_file_header
*header
,
70 struct perf_header
*ph
, int fd
);
73 enum perf_header_version version
;
78 DECLARE_BITMAP(adds_features
, HEADER_FEAT_BITS
);
85 int perf_session__read_header(struct perf_session
*session
);
86 int perf_session__write_header(struct perf_session
*session
,
87 struct perf_evlist
*evlist
,
88 int fd
, bool at_exit
);
89 int perf_header__write_pipe(int fd
);
91 void perf_header__set_feat(struct perf_header
*header
, int feat
);
92 void perf_header__clear_feat(struct perf_header
*header
, int feat
);
93 bool perf_header__has_feat(const struct perf_header
*header
, int feat
);
95 int perf_header__set_cmdline(int argc
, const char **argv
);
97 int perf_header__process_sections(struct perf_header
*header
, int fd
,
99 int (*process
)(struct perf_file_section
*section
,
100 struct perf_header
*ph
,
101 int feat
, int fd
, void *data
));
103 int perf_header__fprintf_info(struct perf_session
*s
, FILE *fp
, bool full
);
105 int perf_event__synthesize_features(struct perf_tool
*tool
,
106 struct perf_session
*session
,
107 struct perf_evlist
*evlist
,
108 perf_event__handler_t process
);
110 int perf_event__synthesize_extra_attr(struct perf_tool
*tool
,
111 struct perf_evlist
*evsel_list
,
112 perf_event__handler_t process
,
115 int perf_event__process_feature(struct perf_tool
*tool
,
116 union perf_event
*event
,
117 struct perf_session
*session
);
119 int perf_event__synthesize_attr(struct perf_tool
*tool
,
120 struct perf_event_attr
*attr
, u32 ids
, u64
*id
,
121 perf_event__handler_t process
);
122 int perf_event__synthesize_attrs(struct perf_tool
*tool
,
123 struct perf_session
*session
,
124 perf_event__handler_t process
);
125 int perf_event__synthesize_event_update_unit(struct perf_tool
*tool
,
126 struct perf_evsel
*evsel
,
127 perf_event__handler_t process
);
128 int perf_event__synthesize_event_update_scale(struct perf_tool
*tool
,
129 struct perf_evsel
*evsel
,
130 perf_event__handler_t process
);
131 int perf_event__synthesize_event_update_name(struct perf_tool
*tool
,
132 struct perf_evsel
*evsel
,
133 perf_event__handler_t process
);
134 int perf_event__synthesize_event_update_cpus(struct perf_tool
*tool
,
135 struct perf_evsel
*evsel
,
136 perf_event__handler_t process
);
137 int perf_event__process_attr(struct perf_tool
*tool
, union perf_event
*event
,
138 struct perf_evlist
**pevlist
);
139 int perf_event__process_event_update(struct perf_tool
*tool
,
140 union perf_event
*event
,
141 struct perf_evlist
**pevlist
);
142 size_t perf_event__fprintf_event_update(union perf_event
*event
, FILE *fp
);
144 int perf_event__synthesize_tracing_data(struct perf_tool
*tool
,
145 int fd
, struct perf_evlist
*evlist
,
146 perf_event__handler_t process
);
147 int perf_event__process_tracing_data(struct perf_tool
*tool
,
148 union perf_event
*event
,
149 struct perf_session
*session
);
151 int perf_event__synthesize_build_id(struct perf_tool
*tool
,
152 struct dso
*pos
, u16 misc
,
153 perf_event__handler_t process
,
154 struct machine
*machine
);
155 int perf_event__process_build_id(struct perf_tool
*tool
,
156 union perf_event
*event
,
157 struct perf_session
*session
);
158 bool is_perf_magic(u64 magic
);
160 #define NAME_ALIGN 64
164 int do_write(struct feat_fd
*fd
, const void *buf
, size_t size
);
166 int write_padded(struct feat_fd
*fd
, const void *bf
,
167 size_t count
, size_t count_aligned
);
170 * arch specific callback
172 int get_cpuid(char *buffer
, size_t sz
);
174 char *get_cpuid_str(void);
175 #endif /* __PERF_HEADER_H */