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,
44 HEADER_FEAT_BITS = 256,
47 enum perf_header_version {
48 PERF_HEADER_VERSION_1,
49 PERF_HEADER_VERSION_2,
52 enum perf_dir_version {
56 struct perf_file_section {
61 struct perf_file_header {
65 struct perf_file_section attrs;
66 struct perf_file_section data;
67 /* event_types is ignored */
68 struct perf_file_section event_types;
69 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
72 struct perf_pipe_file_header {
79 int perf_file_header__read(struct perf_file_header *header,
80 struct perf_header *ph, int fd);
83 enum perf_header_version version;
88 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
95 int perf_session__read_header(struct perf_session *session);
96 int perf_session__write_header(struct perf_session *session,
97 struct perf_evlist *evlist,
98 int fd, bool at_exit);
99 int perf_header__write_pipe(int fd);
101 void perf_header__set_feat(struct perf_header *header, int feat);
102 void perf_header__clear_feat(struct perf_header *header, int feat);
103 bool perf_header__has_feat(const struct perf_header *header, int feat);
105 int perf_header__set_cmdline(int argc, const char **argv);
107 int perf_header__process_sections(struct perf_header *header, int fd,
109 int (*process)(struct perf_file_section *section,
110 struct perf_header *ph,
111 int feat, int fd, void *data));
113 int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full);
115 int perf_event__synthesize_features(struct perf_tool *tool,
116 struct perf_session *session,
117 struct perf_evlist *evlist,
118 perf_event__handler_t process);
120 int perf_event__synthesize_extra_attr(struct perf_tool *tool,
121 struct perf_evlist *evsel_list,
122 perf_event__handler_t process,
125 int perf_event__process_feature(struct perf_session *session,
126 union perf_event *event);
128 int perf_event__synthesize_attr(struct perf_tool *tool,
129 struct perf_event_attr *attr, u32 ids, u64 *id,
130 perf_event__handler_t process);
131 int perf_event__synthesize_attrs(struct perf_tool *tool,
132 struct perf_evlist *evlist,
133 perf_event__handler_t process);
134 int perf_event__synthesize_event_update_unit(struct perf_tool *tool,
135 struct perf_evsel *evsel,
136 perf_event__handler_t process);
137 int perf_event__synthesize_event_update_scale(struct perf_tool *tool,
138 struct perf_evsel *evsel,
139 perf_event__handler_t process);
140 int perf_event__synthesize_event_update_name(struct perf_tool *tool,
141 struct perf_evsel *evsel,
142 perf_event__handler_t process);
143 int perf_event__synthesize_event_update_cpus(struct perf_tool *tool,
144 struct perf_evsel *evsel,
145 perf_event__handler_t process);
146 int perf_event__process_attr(struct perf_tool *tool, union perf_event *event,
147 struct perf_evlist **pevlist);
148 int perf_event__process_event_update(struct perf_tool *tool,
149 union perf_event *event,
150 struct perf_evlist **pevlist);
151 size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp);
153 int perf_event__synthesize_tracing_data(struct perf_tool *tool,
154 int fd, struct perf_evlist *evlist,
155 perf_event__handler_t process);
156 int perf_event__process_tracing_data(struct perf_session *session,
157 union perf_event *event);
159 int perf_event__synthesize_build_id(struct perf_tool *tool,
160 struct dso *pos, u16 misc,
161 perf_event__handler_t process,
162 struct machine *machine);
163 int perf_event__process_build_id(struct perf_session *session,
164 union perf_event *event);
165 bool is_perf_magic(u64 magic);
167 #define NAME_ALIGN 64
171 int do_write(struct feat_fd *fd, const void *buf, size_t size);
173 int write_padded(struct feat_fd *fd, const void *bf,
174 size_t count, size_t count_aligned);
177 * arch specific callback
179 int get_cpuid(char *buffer, size_t sz);
181 char *get_cpuid_str(struct perf_pmu *pmu __maybe_unused);
182 int strcmp_cpuid_str(const char *s1, const char *s2);
183 #endif /* __PERF_HEADER_H */