1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __PERF_HEADER_H
3 #define __PERF_HEADER_H
5 #include <linux/stddef.h>
6 #include <linux/perf_event.h>
9 #include <linux/bitmap.h>
10 #include <linux/types.h>
16 HEADER_RESERVED
= 0, /* always cleared */
17 HEADER_FIRST_FEATURE
= 1,
18 HEADER_TRACING_DATA
= 1,
47 HEADER_FEAT_BITS
= 256,
50 enum perf_header_version
{
51 PERF_HEADER_VERSION_1
,
52 PERF_HEADER_VERSION_2
,
55 enum perf_dir_version
{
59 struct perf_file_section
{
64 struct perf_file_header
{
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
);
75 struct perf_pipe_file_header
{
82 int perf_file_header__read(struct perf_file_header
*header
,
83 struct perf_header
*ph
, int fd
);
86 enum perf_header_version version
;
91 DECLARE_BITMAP(adds_features
, HEADER_FEAT_BITS
);
98 int perf_session__read_header(struct perf_session
*session
);
99 int perf_session__write_header(struct perf_session
*session
,
100 struct perf_evlist
*evlist
,
101 int fd
, bool at_exit
);
102 int perf_header__write_pipe(int fd
);
104 void perf_header__set_feat(struct perf_header
*header
, int feat
);
105 void perf_header__clear_feat(struct perf_header
*header
, int feat
);
106 bool perf_header__has_feat(const struct perf_header
*header
, int feat
);
108 int perf_header__set_cmdline(int argc
, const char **argv
);
110 int perf_header__process_sections(struct perf_header
*header
, int fd
,
112 int (*process
)(struct perf_file_section
*section
,
113 struct perf_header
*ph
,
114 int feat
, int fd
, void *data
));
116 int perf_header__fprintf_info(struct perf_session
*s
, FILE *fp
, bool full
);
118 int perf_event__synthesize_features(struct perf_tool
*tool
,
119 struct perf_session
*session
,
120 struct perf_evlist
*evlist
,
121 perf_event__handler_t process
);
123 int perf_event__synthesize_extra_attr(struct perf_tool
*tool
,
124 struct perf_evlist
*evsel_list
,
125 perf_event__handler_t process
,
128 int perf_event__process_feature(struct perf_session
*session
,
129 union perf_event
*event
);
131 int perf_event__synthesize_attr(struct perf_tool
*tool
,
132 struct perf_event_attr
*attr
, u32 ids
, u64
*id
,
133 perf_event__handler_t process
);
134 int perf_event__synthesize_attrs(struct perf_tool
*tool
,
135 struct perf_evlist
*evlist
,
136 perf_event__handler_t process
);
137 int perf_event__synthesize_event_update_unit(struct perf_tool
*tool
,
139 perf_event__handler_t process
);
140 int perf_event__synthesize_event_update_scale(struct perf_tool
*tool
,
142 perf_event__handler_t process
);
143 int perf_event__synthesize_event_update_name(struct perf_tool
*tool
,
145 perf_event__handler_t process
);
146 int perf_event__synthesize_event_update_cpus(struct perf_tool
*tool
,
148 perf_event__handler_t process
);
149 int perf_event__process_attr(struct perf_tool
*tool
, union perf_event
*event
,
150 struct perf_evlist
**pevlist
);
151 int perf_event__process_event_update(struct perf_tool
*tool
,
152 union perf_event
*event
,
153 struct perf_evlist
**pevlist
);
154 size_t perf_event__fprintf_event_update(union perf_event
*event
, FILE *fp
);
156 int perf_event__synthesize_tracing_data(struct perf_tool
*tool
,
157 int fd
, struct perf_evlist
*evlist
,
158 perf_event__handler_t process
);
159 int perf_event__process_tracing_data(struct perf_session
*session
,
160 union perf_event
*event
);
162 int perf_event__synthesize_build_id(struct perf_tool
*tool
,
163 struct dso
*pos
, u16 misc
,
164 perf_event__handler_t process
,
165 struct machine
*machine
);
166 int perf_event__process_build_id(struct perf_session
*session
,
167 union perf_event
*event
);
168 bool is_perf_magic(u64 magic
);
170 #define NAME_ALIGN 64
174 int do_write(struct feat_fd
*fd
, const void *buf
, size_t size
);
176 int write_padded(struct feat_fd
*fd
, const void *bf
,
177 size_t count
, size_t count_aligned
);
180 * arch specific callback
182 int get_cpuid(char *buffer
, size_t sz
);
184 char *get_cpuid_str(struct perf_pmu
*pmu __maybe_unused
);
185 int strcmp_cpuid_str(const char *s1
, const char *s2
);
186 #endif /* __PERF_HEADER_H */