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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __PERF_HEADER_H
3#define __PERF_HEADER_H
4
5#include <linux/stddef.h>
6#include <linux/perf_event.h>
7#include <sys/types.h>
8#include <stdio.h> // FILE
9#include <stdbool.h>
10#include <linux/bitmap.h>
11#include <linux/types.h>
12#include "env.h"
13#include "pmu.h"
14
15enum {
16 HEADER_RESERVED = 0, /* always cleared */
17 HEADER_FIRST_FEATURE = 1,
18 HEADER_TRACING_DATA = 1,
19 HEADER_BUILD_ID,
20
21 HEADER_HOSTNAME,
22 HEADER_OSRELEASE,
23 HEADER_VERSION,
24 HEADER_ARCH,
25 HEADER_NRCPUS,
26 HEADER_CPUDESC,
27 HEADER_CPUID,
28 HEADER_TOTAL_MEM,
29 HEADER_CMDLINE,
30 HEADER_EVENT_DESC,
31 HEADER_CPU_TOPOLOGY,
32 HEADER_NUMA_TOPOLOGY,
33 HEADER_BRANCH_STACK,
34 HEADER_PMU_MAPPINGS,
35 HEADER_GROUP_DESC,
36 HEADER_AUXTRACE,
37 HEADER_STAT,
38 HEADER_CACHE,
39 HEADER_SAMPLE_TIME,
40 HEADER_MEM_TOPOLOGY,
41 HEADER_CLOCKID,
42 HEADER_DIR_FORMAT,
43 HEADER_BPF_PROG_INFO,
44 HEADER_BPF_BTF,
45 HEADER_COMPRESSED,
46 HEADER_CPU_PMU_CAPS,
47 HEADER_CLOCK_DATA,
48 HEADER_HYBRID_TOPOLOGY,
49 HEADER_PMU_CAPS,
50 HEADER_LAST_FEATURE,
51 HEADER_FEAT_BITS = 256,
52};
53
54enum perf_header_version {
55 PERF_HEADER_VERSION_1,
56 PERF_HEADER_VERSION_2,
57};
58
59struct perf_file_section {
60 u64 offset;
61 u64 size;
62};
63
64struct perf_file_header {
65 u64 magic;
66 u64 size;
67 u64 attr_size;
68 struct perf_file_section attrs;
69 struct perf_file_section data;
70 /* event_types is ignored */
71 struct perf_file_section event_types;
72 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
73};
74
75struct perf_pipe_file_header {
76 u64 magic;
77 u64 size;
78};
79
80struct perf_header;
81
82int perf_file_header__read(struct perf_file_header *header,
83 struct perf_header *ph, int fd);
84
85struct perf_header {
86 enum perf_header_version version;
87 bool needs_swap;
88 u64 data_offset;
89 u64 data_size;
90 u64 feat_offset;
91 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
92 struct perf_env env;
93};
94
95struct feat_fd {
96 struct perf_header *ph;
97 int fd;
98 void *buf; /* Either buf != NULL or fd >= 0 */
99 ssize_t offset;
100 size_t size;
101 struct evsel *events;
102};
103
104struct perf_header_feature_ops {
105 int (*write)(struct feat_fd *ff, struct evlist *evlist);
106 void (*print)(struct feat_fd *ff, FILE *fp);
107 int (*process)(struct feat_fd *ff, void *data);
108 const char *name;
109 bool full_only;
110 bool synthesize;
111};
112
113struct evlist;
114struct perf_session;
115struct perf_tool;
116union perf_event;
117
118int perf_session__read_header(struct perf_session *session, int repipe_fd);
119int perf_session__write_header(struct perf_session *session,
120 struct evlist *evlist,
121 int fd, bool at_exit);
122int perf_header__write_pipe(int fd);
123
124/* feat_writer writes a feature section to output */
125struct feat_writer {
126 int (*write)(struct feat_writer *fw, void *buf, size_t sz);
127};
128
129/* feat_copier copies a feature section using feat_writer to output */
130struct feat_copier {
131 int (*copy)(struct feat_copier *fc, int feat, struct feat_writer *fw);
132};
133
134int perf_session__inject_header(struct perf_session *session,
135 struct evlist *evlist,
136 int fd,
137 struct feat_copier *fc);
138
139size_t perf_session__data_offset(const struct evlist *evlist);
140
141void perf_header__set_feat(struct perf_header *header, int feat);
142void perf_header__clear_feat(struct perf_header *header, int feat);
143bool perf_header__has_feat(const struct perf_header *header, int feat);
144
145int perf_header__set_cmdline(int argc, const char **argv);
146
147int perf_header__process_sections(struct perf_header *header, int fd,
148 void *data,
149 int (*process)(struct perf_file_section *section,
150 struct perf_header *ph,
151 int feat, int fd, void *data));
152
153int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full);
154
155int perf_event__process_feature(struct perf_session *session,
156 union perf_event *event);
157int perf_event__process_attr(struct perf_tool *tool, union perf_event *event,
158 struct evlist **pevlist);
159int perf_event__process_event_update(struct perf_tool *tool,
160 union perf_event *event,
161 struct evlist **pevlist);
162size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp);
163#ifdef HAVE_LIBTRACEEVENT
164int perf_event__process_tracing_data(struct perf_session *session,
165 union perf_event *event);
166#endif
167int perf_event__process_build_id(struct perf_session *session,
168 union perf_event *event);
169bool is_perf_magic(u64 magic);
170
171#define NAME_ALIGN 64
172
173struct feat_fd;
174
175int do_write(struct feat_fd *fd, const void *buf, size_t size);
176
177int write_padded(struct feat_fd *fd, const void *bf,
178 size_t count, size_t count_aligned);
179
180int is_cpu_online(unsigned int cpu);
181/*
182 * arch specific callback
183 */
184int get_cpuid(char *buffer, size_t sz);
185
186char *get_cpuid_str(struct perf_pmu *pmu __maybe_unused);
187int strcmp_cpuid_str(const char *s1, const char *s2);
188#endif /* __PERF_HEADER_H */
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __PERF_HEADER_H
3#define __PERF_HEADER_H
4
5#include <linux/stddef.h>
6#include <linux/perf_event.h>
7#include <sys/types.h>
8#include <stdio.h> // FILE
9#include <stdbool.h>
10#include <linux/bitmap.h>
11#include <linux/types.h>
12#include "env.h"
13#include "pmu.h"
14
15enum {
16 HEADER_RESERVED = 0, /* always cleared */
17 HEADER_FIRST_FEATURE = 1,
18 HEADER_TRACING_DATA = 1,
19 HEADER_BUILD_ID,
20
21 HEADER_HOSTNAME,
22 HEADER_OSRELEASE,
23 HEADER_VERSION,
24 HEADER_ARCH,
25 HEADER_NRCPUS,
26 HEADER_CPUDESC,
27 HEADER_CPUID,
28 HEADER_TOTAL_MEM,
29 HEADER_CMDLINE,
30 HEADER_EVENT_DESC,
31 HEADER_CPU_TOPOLOGY,
32 HEADER_NUMA_TOPOLOGY,
33 HEADER_BRANCH_STACK,
34 HEADER_PMU_MAPPINGS,
35 HEADER_GROUP_DESC,
36 HEADER_AUXTRACE,
37 HEADER_STAT,
38 HEADER_CACHE,
39 HEADER_SAMPLE_TIME,
40 HEADER_MEM_TOPOLOGY,
41 HEADER_CLOCKID,
42 HEADER_DIR_FORMAT,
43 HEADER_BPF_PROG_INFO,
44 HEADER_BPF_BTF,
45 HEADER_COMPRESSED,
46 HEADER_CPU_PMU_CAPS,
47 HEADER_CLOCK_DATA,
48 HEADER_LAST_FEATURE,
49 HEADER_FEAT_BITS = 256,
50};
51
52enum perf_header_version {
53 PERF_HEADER_VERSION_1,
54 PERF_HEADER_VERSION_2,
55};
56
57struct perf_file_section {
58 u64 offset;
59 u64 size;
60};
61
62struct perf_file_header {
63 u64 magic;
64 u64 size;
65 u64 attr_size;
66 struct perf_file_section attrs;
67 struct perf_file_section data;
68 /* event_types is ignored */
69 struct perf_file_section event_types;
70 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
71};
72
73struct perf_pipe_file_header {
74 u64 magic;
75 u64 size;
76};
77
78struct perf_header;
79
80int perf_file_header__read(struct perf_file_header *header,
81 struct perf_header *ph, int fd);
82
83struct perf_header {
84 enum perf_header_version version;
85 bool needs_swap;
86 u64 data_offset;
87 u64 data_size;
88 u64 feat_offset;
89 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
90 struct perf_env env;
91};
92
93struct feat_fd {
94 struct perf_header *ph;
95 int fd;
96 void *buf; /* Either buf != NULL or fd >= 0 */
97 ssize_t offset;
98 size_t size;
99 struct evsel *events;
100};
101
102struct perf_header_feature_ops {
103 int (*write)(struct feat_fd *ff, struct evlist *evlist);
104 void (*print)(struct feat_fd *ff, FILE *fp);
105 int (*process)(struct feat_fd *ff, void *data);
106 const char *name;
107 bool full_only;
108 bool synthesize;
109};
110
111struct evlist;
112struct perf_session;
113struct perf_tool;
114union perf_event;
115
116int perf_session__read_header(struct perf_session *session);
117int perf_session__write_header(struct perf_session *session,
118 struct evlist *evlist,
119 int fd, bool at_exit);
120int perf_header__write_pipe(int fd);
121
122void perf_header__set_feat(struct perf_header *header, int feat);
123void perf_header__clear_feat(struct perf_header *header, int feat);
124bool perf_header__has_feat(const struct perf_header *header, int feat);
125
126int perf_header__set_cmdline(int argc, const char **argv);
127
128int perf_header__process_sections(struct perf_header *header, int fd,
129 void *data,
130 int (*process)(struct perf_file_section *section,
131 struct perf_header *ph,
132 int feat, int fd, void *data));
133
134int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full);
135
136int perf_event__process_feature(struct perf_session *session,
137 union perf_event *event);
138int perf_event__process_attr(struct perf_tool *tool, union perf_event *event,
139 struct evlist **pevlist);
140int perf_event__process_event_update(struct perf_tool *tool,
141 union perf_event *event,
142 struct evlist **pevlist);
143size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp);
144int perf_event__process_tracing_data(struct perf_session *session,
145 union perf_event *event);
146int perf_event__process_build_id(struct perf_session *session,
147 union perf_event *event);
148bool is_perf_magic(u64 magic);
149
150#define NAME_ALIGN 64
151
152struct feat_fd;
153
154int do_write(struct feat_fd *fd, const void *buf, size_t size);
155
156int write_padded(struct feat_fd *fd, const void *bf,
157 size_t count, size_t count_aligned);
158
159/*
160 * arch specific callback
161 */
162int get_cpuid(char *buffer, size_t sz);
163
164char *get_cpuid_str(struct perf_pmu *pmu __maybe_unused);
165int strcmp_cpuid_str(const char *s1, const char *s2);
166#endif /* __PERF_HEADER_H */