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,
46 HEADER_FEAT_BITS = 256,
49 enum perf_header_version {
50 PERF_HEADER_VERSION_1,
51 PERF_HEADER_VERSION_2,
54 enum perf_dir_version {
58 struct perf_file_section {
63 struct perf_file_header {
67 struct perf_file_section attrs;
68 struct perf_file_section data;
69 /* event_types is ignored */
70 struct perf_file_section event_types;
71 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
74 struct perf_pipe_file_header {
81 int perf_file_header__read(struct perf_file_header *header,
82 struct perf_header *ph, int fd);
85 enum perf_header_version version;
90 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
97 int perf_session__read_header(struct perf_session *session);
98 int perf_session__write_header(struct perf_session *session,
99 struct perf_evlist *evlist,
100 int fd, bool at_exit);
101 int perf_header__write_pipe(int fd);
103 void perf_header__set_feat(struct perf_header *header, int feat);
104 void perf_header__clear_feat(struct perf_header *header, int feat);
105 bool perf_header__has_feat(const struct perf_header *header, int feat);
107 int perf_header__set_cmdline(int argc, const char **argv);
109 int perf_header__process_sections(struct perf_header *header, int fd,
111 int (*process)(struct perf_file_section *section,
112 struct perf_header *ph,
113 int feat, int fd, void *data));
115 int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full);
117 int perf_event__synthesize_features(struct perf_tool *tool,
118 struct perf_session *session,
119 struct perf_evlist *evlist,
120 perf_event__handler_t process);
122 int perf_event__synthesize_extra_attr(struct perf_tool *tool,
123 struct perf_evlist *evsel_list,
124 perf_event__handler_t process,
127 int perf_event__process_feature(struct perf_session *session,
128 union perf_event *event);
130 int perf_event__synthesize_attr(struct perf_tool *tool,
131 struct perf_event_attr *attr, u32 ids, u64 *id,
132 perf_event__handler_t process);
133 int perf_event__synthesize_attrs(struct perf_tool *tool,
134 struct perf_evlist *evlist,
135 perf_event__handler_t process);
136 int perf_event__synthesize_event_update_unit(struct perf_tool *tool,
137 struct perf_evsel *evsel,
138 perf_event__handler_t process);
139 int perf_event__synthesize_event_update_scale(struct perf_tool *tool,
140 struct perf_evsel *evsel,
141 perf_event__handler_t process);
142 int perf_event__synthesize_event_update_name(struct perf_tool *tool,
143 struct perf_evsel *evsel,
144 perf_event__handler_t process);
145 int perf_event__synthesize_event_update_cpus(struct perf_tool *tool,
146 struct perf_evsel *evsel,
147 perf_event__handler_t process);
148 int perf_event__process_attr(struct perf_tool *tool, union perf_event *event,
149 struct perf_evlist **pevlist);
150 int perf_event__process_event_update(struct perf_tool *tool,
151 union perf_event *event,
152 struct perf_evlist **pevlist);
153 size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp);
155 int perf_event__synthesize_tracing_data(struct perf_tool *tool,
156 int fd, struct perf_evlist *evlist,
157 perf_event__handler_t process);
158 int perf_event__process_tracing_data(struct perf_session *session,
159 union perf_event *event);
161 int perf_event__synthesize_build_id(struct perf_tool *tool,
162 struct dso *pos, u16 misc,
163 perf_event__handler_t process,
164 struct machine *machine);
165 int perf_event__process_build_id(struct perf_session *session,
166 union perf_event *event);
167 bool is_perf_magic(u64 magic);
169 #define NAME_ALIGN 64
173 int do_write(struct feat_fd *fd, const void *buf, size_t size);
175 int write_padded(struct feat_fd *fd, const void *bf,
176 size_t count, size_t count_aligned);
179 * arch specific callback
181 int get_cpuid(char *buffer, size_t sz);
183 char *get_cpuid_str(struct perf_pmu *pmu __maybe_unused);
184 int strcmp_cpuid_str(const char *s1, const char *s2);
185 #endif /* __PERF_HEADER_H */