Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __PERF_HEADER_H
3#define __PERF_HEADER_H
4
5#include <linux/perf_event.h>
6#include <sys/types.h>
7#include <stdbool.h>
8#include <linux/bitmap.h>
9#include <linux/types.h>
10#include "event.h"
11#include "env.h"
12#include "pmu.h"
13
14enum {
15 HEADER_RESERVED = 0, /* always cleared */
16 HEADER_FIRST_FEATURE = 1,
17 HEADER_TRACING_DATA = 1,
18 HEADER_BUILD_ID,
19
20 HEADER_HOSTNAME,
21 HEADER_OSRELEASE,
22 HEADER_VERSION,
23 HEADER_ARCH,
24 HEADER_NRCPUS,
25 HEADER_CPUDESC,
26 HEADER_CPUID,
27 HEADER_TOTAL_MEM,
28 HEADER_CMDLINE,
29 HEADER_EVENT_DESC,
30 HEADER_CPU_TOPOLOGY,
31 HEADER_NUMA_TOPOLOGY,
32 HEADER_BRANCH_STACK,
33 HEADER_PMU_MAPPINGS,
34 HEADER_GROUP_DESC,
35 HEADER_AUXTRACE,
36 HEADER_STAT,
37 HEADER_CACHE,
38 HEADER_SAMPLE_TIME,
39 HEADER_MEM_TOPOLOGY,
40 HEADER_LAST_FEATURE,
41 HEADER_FEAT_BITS = 256,
42};
43
44enum perf_header_version {
45 PERF_HEADER_VERSION_1,
46 PERF_HEADER_VERSION_2,
47};
48
49struct perf_file_section {
50 u64 offset;
51 u64 size;
52};
53
54struct perf_file_header {
55 u64 magic;
56 u64 size;
57 u64 attr_size;
58 struct perf_file_section attrs;
59 struct perf_file_section data;
60 /* event_types is ignored */
61 struct perf_file_section event_types;
62 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
63};
64
65struct perf_pipe_file_header {
66 u64 magic;
67 u64 size;
68};
69
70struct perf_header;
71
72int perf_file_header__read(struct perf_file_header *header,
73 struct perf_header *ph, int fd);
74
75struct perf_header {
76 enum perf_header_version version;
77 bool needs_swap;
78 u64 data_offset;
79 u64 data_size;
80 u64 feat_offset;
81 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
82 struct perf_env env;
83};
84
85struct perf_evlist;
86struct perf_session;
87
88int perf_session__read_header(struct perf_session *session);
89int perf_session__write_header(struct perf_session *session,
90 struct perf_evlist *evlist,
91 int fd, bool at_exit);
92int perf_header__write_pipe(int fd);
93
94void perf_header__set_feat(struct perf_header *header, int feat);
95void perf_header__clear_feat(struct perf_header *header, int feat);
96bool perf_header__has_feat(const struct perf_header *header, int feat);
97
98int perf_header__set_cmdline(int argc, const char **argv);
99
100int perf_header__process_sections(struct perf_header *header, int fd,
101 void *data,
102 int (*process)(struct perf_file_section *section,
103 struct perf_header *ph,
104 int feat, int fd, void *data));
105
106int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full);
107
108int perf_event__synthesize_features(struct perf_tool *tool,
109 struct perf_session *session,
110 struct perf_evlist *evlist,
111 perf_event__handler_t process);
112
113int perf_event__synthesize_extra_attr(struct perf_tool *tool,
114 struct perf_evlist *evsel_list,
115 perf_event__handler_t process,
116 bool is_pipe);
117
118int perf_event__process_feature(struct perf_tool *tool,
119 union perf_event *event,
120 struct perf_session *session);
121
122int perf_event__synthesize_attr(struct perf_tool *tool,
123 struct perf_event_attr *attr, u32 ids, u64 *id,
124 perf_event__handler_t process);
125int perf_event__synthesize_attrs(struct perf_tool *tool,
126 struct perf_session *session,
127 perf_event__handler_t process);
128int perf_event__synthesize_event_update_unit(struct perf_tool *tool,
129 struct perf_evsel *evsel,
130 perf_event__handler_t process);
131int perf_event__synthesize_event_update_scale(struct perf_tool *tool,
132 struct perf_evsel *evsel,
133 perf_event__handler_t process);
134int perf_event__synthesize_event_update_name(struct perf_tool *tool,
135 struct perf_evsel *evsel,
136 perf_event__handler_t process);
137int perf_event__synthesize_event_update_cpus(struct perf_tool *tool,
138 struct perf_evsel *evsel,
139 perf_event__handler_t process);
140int perf_event__process_attr(struct perf_tool *tool, union perf_event *event,
141 struct perf_evlist **pevlist);
142int perf_event__process_event_update(struct perf_tool *tool,
143 union perf_event *event,
144 struct perf_evlist **pevlist);
145size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp);
146
147int perf_event__synthesize_tracing_data(struct perf_tool *tool,
148 int fd, struct perf_evlist *evlist,
149 perf_event__handler_t process);
150int perf_event__process_tracing_data(struct perf_tool *tool,
151 union perf_event *event,
152 struct perf_session *session);
153
154int perf_event__synthesize_build_id(struct perf_tool *tool,
155 struct dso *pos, u16 misc,
156 perf_event__handler_t process,
157 struct machine *machine);
158int perf_event__process_build_id(struct perf_tool *tool,
159 union perf_event *event,
160 struct perf_session *session);
161bool is_perf_magic(u64 magic);
162
163#define NAME_ALIGN 64
164
165struct feat_fd;
166
167int do_write(struct feat_fd *fd, const void *buf, size_t size);
168
169int write_padded(struct feat_fd *fd, const void *bf,
170 size_t count, size_t count_aligned);
171
172/*
173 * arch specific callback
174 */
175int get_cpuid(char *buffer, size_t sz);
176
177char *get_cpuid_str(struct perf_pmu *pmu __maybe_unused);
178int strcmp_cpuid_str(const char *s1, const char *s2);
179#endif /* __PERF_HEADER_H */