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_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_header {
70	enum perf_header_version	version;
71	bool				needs_swap;
72	u64				data_offset;
73	u64				data_size;
74	u64				feat_offset;
75	DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
76	struct perf_env 	env;
77};
78
79struct perf_evlist;
80struct perf_session;
81
82int perf_session__read_header(struct perf_session *session);
83int perf_session__write_header(struct perf_session *session,
84			       struct perf_evlist *evlist,
85			       int fd, bool at_exit);
86int perf_header__write_pipe(int fd);
87
88void perf_header__set_feat(struct perf_header *header, int feat);
89void perf_header__clear_feat(struct perf_header *header, int feat);
90bool perf_header__has_feat(const struct perf_header *header, int feat);
91
92int perf_header__set_cmdline(int argc, const char **argv);
93
94int perf_header__process_sections(struct perf_header *header, int fd,
95				  void *data,
96				  int (*process)(struct perf_file_section *section,
97				  struct perf_header *ph,
98				  int feat, int fd, void *data));
99
100int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full);
101
102int perf_event__synthesize_attr(struct perf_tool *tool,
103				struct perf_event_attr *attr, u32 ids, u64 *id,
104				perf_event__handler_t process);
105int perf_event__synthesize_attrs(struct perf_tool *tool,
106				 struct perf_session *session,
107				 perf_event__handler_t process);
108int perf_event__process_attr(struct perf_tool *tool, union perf_event *event,
109			     struct perf_evlist **pevlist);
110
111int perf_event__synthesize_tracing_data(struct perf_tool *tool,
112					int fd, struct perf_evlist *evlist,
113					perf_event__handler_t process);
114int perf_event__process_tracing_data(struct perf_tool *tool,
115				     union perf_event *event,
116				     struct perf_session *session);
117
118int perf_event__synthesize_build_id(struct perf_tool *tool,
119				    struct dso *pos, u16 misc,
120				    perf_event__handler_t process,
121				    struct machine *machine);
122int perf_event__process_build_id(struct perf_tool *tool,
123				 union perf_event *event,
124				 struct perf_session *session);
125bool is_perf_magic(u64 magic);
126
127#define NAME_ALIGN 64
128
129int write_padded(int fd, const void *bf, size_t count, size_t count_aligned);
130
131/*
132 * arch specific callback
133 */
134int get_cpuid(char *buffer, size_t sz);
135
136#endif /* __PERF_HEADER_H */
137