Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
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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
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_LAST_FEATURE,
35 HEADER_FEAT_BITS = 256,
36};
37
38enum perf_header_version {
39 PERF_HEADER_VERSION_1,
40 PERF_HEADER_VERSION_2,
41};
42
43struct perf_file_section {
44 u64 offset;
45 u64 size;
46};
47
48struct perf_file_header {
49 u64 magic;
50 u64 size;
51 u64 attr_size;
52 struct perf_file_section attrs;
53 struct perf_file_section data;
54 /* event_types is ignored */
55 struct perf_file_section event_types;
56 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
57};
58
59struct perf_pipe_file_header {
60 u64 magic;
61 u64 size;
62};
63
64struct perf_header;
65
66int perf_file_header__read(struct perf_file_header *header,
67 struct perf_header *ph, int fd);
68
69struct perf_session_env {
70 char *hostname;
71 char *os_release;
72 char *version;
73 char *arch;
74 int nr_cpus_online;
75 int nr_cpus_avail;
76 char *cpu_desc;
77 char *cpuid;
78 unsigned long long total_mem;
79
80 int nr_cmdline;
81 int nr_sibling_cores;
82 int nr_sibling_threads;
83 int nr_numa_nodes;
84 int nr_pmu_mappings;
85 int nr_groups;
86 char *cmdline;
87 char *sibling_cores;
88 char *sibling_threads;
89 char *numa_nodes;
90 char *pmu_mappings;
91};
92
93struct perf_header {
94 enum perf_header_version version;
95 bool needs_swap;
96 u64 data_offset;
97 u64 data_size;
98 u64 feat_offset;
99 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
100 struct perf_session_env env;
101};
102
103struct perf_evlist;
104struct perf_session;
105
106int perf_session__read_header(struct perf_session *session);
107int perf_session__write_header(struct perf_session *session,
108 struct perf_evlist *evlist,
109 int fd, bool at_exit);
110int perf_header__write_pipe(int fd);
111
112void perf_header__set_feat(struct perf_header *header, int feat);
113void perf_header__clear_feat(struct perf_header *header, int feat);
114bool perf_header__has_feat(const struct perf_header *header, int feat);
115
116int perf_header__set_cmdline(int argc, const char **argv);
117
118int perf_header__process_sections(struct perf_header *header, int fd,
119 void *data,
120 int (*process)(struct perf_file_section *section,
121 struct perf_header *ph,
122 int feat, int fd, void *data));
123
124int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full);
125
126int perf_event__synthesize_attr(struct perf_tool *tool,
127 struct perf_event_attr *attr, u32 ids, u64 *id,
128 perf_event__handler_t process);
129int perf_event__synthesize_attrs(struct perf_tool *tool,
130 struct perf_session *session,
131 perf_event__handler_t process);
132int perf_event__process_attr(struct perf_tool *tool, union perf_event *event,
133 struct perf_evlist **pevlist);
134
135int perf_event__synthesize_tracing_data(struct perf_tool *tool,
136 int fd, struct perf_evlist *evlist,
137 perf_event__handler_t process);
138int perf_event__process_tracing_data(struct perf_tool *tool,
139 union perf_event *event,
140 struct perf_session *session);
141
142int perf_event__synthesize_build_id(struct perf_tool *tool,
143 struct dso *pos, u16 misc,
144 perf_event__handler_t process,
145 struct machine *machine);
146int perf_event__process_build_id(struct perf_tool *tool,
147 union perf_event *event,
148 struct perf_session *session);
149bool is_perf_magic(u64 magic);
150
151#define NAME_ALIGN 64
152
153int write_padded(int fd, const void *bf, size_t count, size_t count_aligned);
154
155/*
156 * arch specific callback
157 */
158int get_cpuid(char *buffer, size_t sz);
159
160#endif /* __PERF_HEADER_H */