Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#ifndef __PERF_HEADER_H
2#define __PERF_HEADER_H
3
4#include <linux/perf_event.h>
5#include <sys/types.h>
6#include <stdbool.h>
7#include <linux/bitmap.h>
8#include <linux/types.h>
9#include "event.h"
10#include "env.h"
11
12enum {
13 HEADER_RESERVED = 0, /* always cleared */
14 HEADER_FIRST_FEATURE = 1,
15 HEADER_TRACING_DATA = 1,
16 HEADER_BUILD_ID,
17
18 HEADER_HOSTNAME,
19 HEADER_OSRELEASE,
20 HEADER_VERSION,
21 HEADER_ARCH,
22 HEADER_NRCPUS,
23 HEADER_CPUDESC,
24 HEADER_CPUID,
25 HEADER_TOTAL_MEM,
26 HEADER_CMDLINE,
27 HEADER_EVENT_DESC,
28 HEADER_CPU_TOPOLOGY,
29 HEADER_NUMA_TOPOLOGY,
30 HEADER_BRANCH_STACK,
31 HEADER_PMU_MAPPINGS,
32 HEADER_GROUP_DESC,
33 HEADER_AUXTRACE,
34 HEADER_STAT,
35 HEADER_LAST_FEATURE,
36 HEADER_FEAT_BITS = 256,
37};
38
39enum perf_header_version {
40 PERF_HEADER_VERSION_1,
41 PERF_HEADER_VERSION_2,
42};
43
44struct perf_file_section {
45 u64 offset;
46 u64 size;
47};
48
49struct perf_file_header {
50 u64 magic;
51 u64 size;
52 u64 attr_size;
53 struct perf_file_section attrs;
54 struct perf_file_section data;
55 /* event_types is ignored */
56 struct perf_file_section event_types;
57 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
58};
59
60struct perf_pipe_file_header {
61 u64 magic;
62 u64 size;
63};
64
65struct perf_header;
66
67int perf_file_header__read(struct perf_file_header *header,
68 struct perf_header *ph, int fd);
69
70struct perf_header {
71 enum perf_header_version version;
72 bool needs_swap;
73 u64 data_offset;
74 u64 data_size;
75 u64 feat_offset;
76 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
77 struct perf_env env;
78};
79
80struct perf_evlist;
81struct perf_session;
82
83int perf_session__read_header(struct perf_session *session);
84int perf_session__write_header(struct perf_session *session,
85 struct perf_evlist *evlist,
86 int fd, bool at_exit);
87int perf_header__write_pipe(int fd);
88
89void perf_header__set_feat(struct perf_header *header, int feat);
90void perf_header__clear_feat(struct perf_header *header, int feat);
91bool perf_header__has_feat(const struct perf_header *header, int feat);
92
93int perf_header__set_cmdline(int argc, const char **argv);
94
95int perf_header__process_sections(struct perf_header *header, int fd,
96 void *data,
97 int (*process)(struct perf_file_section *section,
98 struct perf_header *ph,
99 int feat, int fd, void *data));
100
101int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full);
102
103int perf_event__synthesize_attr(struct perf_tool *tool,
104 struct perf_event_attr *attr, u32 ids, u64 *id,
105 perf_event__handler_t process);
106int perf_event__synthesize_attrs(struct perf_tool *tool,
107 struct perf_session *session,
108 perf_event__handler_t process);
109int perf_event__synthesize_event_update_unit(struct perf_tool *tool,
110 struct perf_evsel *evsel,
111 perf_event__handler_t process);
112int perf_event__synthesize_event_update_scale(struct perf_tool *tool,
113 struct perf_evsel *evsel,
114 perf_event__handler_t process);
115int perf_event__synthesize_event_update_name(struct perf_tool *tool,
116 struct perf_evsel *evsel,
117 perf_event__handler_t process);
118int perf_event__synthesize_event_update_cpus(struct perf_tool *tool,
119 struct perf_evsel *evsel,
120 perf_event__handler_t process);
121int perf_event__process_attr(struct perf_tool *tool, union perf_event *event,
122 struct perf_evlist **pevlist);
123int perf_event__process_event_update(struct perf_tool *tool __maybe_unused,
124 union perf_event *event,
125 struct perf_evlist **pevlist);
126size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp);
127
128int perf_event__synthesize_tracing_data(struct perf_tool *tool,
129 int fd, struct perf_evlist *evlist,
130 perf_event__handler_t process);
131int perf_event__process_tracing_data(struct perf_tool *tool,
132 union perf_event *event,
133 struct perf_session *session);
134
135int perf_event__synthesize_build_id(struct perf_tool *tool,
136 struct dso *pos, u16 misc,
137 perf_event__handler_t process,
138 struct machine *machine);
139int perf_event__process_build_id(struct perf_tool *tool,
140 union perf_event *event,
141 struct perf_session *session);
142bool is_perf_magic(u64 magic);
143
144#define NAME_ALIGN 64
145
146int write_padded(int fd, const void *bf, size_t count, size_t count_aligned);
147
148/*
149 * arch specific callback
150 */
151int get_cpuid(char *buffer, size_t sz);
152
153#endif /* __PERF_HEADER_H */