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_CACHE,
36 HEADER_LAST_FEATURE,
37 HEADER_FEAT_BITS = 256,
38};
39
40enum perf_header_version {
41 PERF_HEADER_VERSION_1,
42 PERF_HEADER_VERSION_2,
43};
44
45struct perf_file_section {
46 u64 offset;
47 u64 size;
48};
49
50struct perf_file_header {
51 u64 magic;
52 u64 size;
53 u64 attr_size;
54 struct perf_file_section attrs;
55 struct perf_file_section data;
56 /* event_types is ignored */
57 struct perf_file_section event_types;
58 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
59};
60
61struct perf_pipe_file_header {
62 u64 magic;
63 u64 size;
64};
65
66struct perf_header;
67
68int perf_file_header__read(struct perf_file_header *header,
69 struct perf_header *ph, int fd);
70
71struct perf_header {
72 enum perf_header_version version;
73 bool needs_swap;
74 u64 data_offset;
75 u64 data_size;
76 u64 feat_offset;
77 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
78 struct perf_env env;
79};
80
81struct perf_evlist;
82struct perf_session;
83
84int perf_session__read_header(struct perf_session *session);
85int perf_session__write_header(struct perf_session *session,
86 struct perf_evlist *evlist,
87 int fd, bool at_exit);
88int perf_header__write_pipe(int fd);
89
90void perf_header__set_feat(struct perf_header *header, int feat);
91void perf_header__clear_feat(struct perf_header *header, int feat);
92bool perf_header__has_feat(const struct perf_header *header, int feat);
93
94int perf_header__set_cmdline(int argc, const char **argv);
95
96int perf_header__process_sections(struct perf_header *header, int fd,
97 void *data,
98 int (*process)(struct perf_file_section *section,
99 struct perf_header *ph,
100 int feat, int fd, void *data));
101
102int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full);
103
104int perf_event__synthesize_attr(struct perf_tool *tool,
105 struct perf_event_attr *attr, u32 ids, u64 *id,
106 perf_event__handler_t process);
107int perf_event__synthesize_attrs(struct perf_tool *tool,
108 struct perf_session *session,
109 perf_event__handler_t process);
110int perf_event__synthesize_event_update_unit(struct perf_tool *tool,
111 struct perf_evsel *evsel,
112 perf_event__handler_t process);
113int perf_event__synthesize_event_update_scale(struct perf_tool *tool,
114 struct perf_evsel *evsel,
115 perf_event__handler_t process);
116int perf_event__synthesize_event_update_name(struct perf_tool *tool,
117 struct perf_evsel *evsel,
118 perf_event__handler_t process);
119int perf_event__synthesize_event_update_cpus(struct perf_tool *tool,
120 struct perf_evsel *evsel,
121 perf_event__handler_t process);
122int perf_event__process_attr(struct perf_tool *tool, union perf_event *event,
123 struct perf_evlist **pevlist);
124int perf_event__process_event_update(struct perf_tool *tool,
125 union perf_event *event,
126 struct perf_evlist **pevlist);
127size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp);
128
129int perf_event__synthesize_tracing_data(struct perf_tool *tool,
130 int fd, struct perf_evlist *evlist,
131 perf_event__handler_t process);
132int perf_event__process_tracing_data(struct perf_tool *tool,
133 union perf_event *event,
134 struct perf_session *session);
135
136int perf_event__synthesize_build_id(struct perf_tool *tool,
137 struct dso *pos, u16 misc,
138 perf_event__handler_t process,
139 struct machine *machine);
140int perf_event__process_build_id(struct perf_tool *tool,
141 union perf_event *event,
142 struct perf_session *session);
143bool is_perf_magic(u64 magic);
144
145#define NAME_ALIGN 64
146
147int write_padded(int fd, const void *bf, size_t count, size_t count_aligned);
148
149/*
150 * arch specific callback
151 */
152int get_cpuid(char *buffer, size_t sz);
153
154char *get_cpuid_str(void);
155#endif /* __PERF_HEADER_H */