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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 
12 enum {
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 
40 enum perf_header_version {
41 	PERF_HEADER_VERSION_1,
42 	PERF_HEADER_VERSION_2,
43 };
44 
45 struct perf_file_section {
46 	u64 offset;
47 	u64 size;
48 };
49 
50 struct 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 
61 struct perf_pipe_file_header {
62 	u64				magic;
63 	u64				size;
64 };
65 
66 struct perf_header;
67 
68 int perf_file_header__read(struct perf_file_header *header,
69 			   struct perf_header *ph, int fd);
70 
71 struct 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 
81 struct perf_evlist;
82 struct perf_session;
83 
84 int perf_session__read_header(struct perf_session *session);
85 int perf_session__write_header(struct perf_session *session,
86 			       struct perf_evlist *evlist,
87 			       int fd, bool at_exit);
88 int perf_header__write_pipe(int fd);
89 
90 void perf_header__set_feat(struct perf_header *header, int feat);
91 void perf_header__clear_feat(struct perf_header *header, int feat);
92 bool perf_header__has_feat(const struct perf_header *header, int feat);
93 
94 int perf_header__set_cmdline(int argc, const char **argv);
95 
96 int 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 
102 int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full);
103 
104 int perf_event__synthesize_attr(struct perf_tool *tool,
105 				struct perf_event_attr *attr, u32 ids, u64 *id,
106 				perf_event__handler_t process);
107 int perf_event__synthesize_attrs(struct perf_tool *tool,
108 				 struct perf_session *session,
109 				 perf_event__handler_t process);
110 int perf_event__synthesize_event_update_unit(struct perf_tool *tool,
111 					     struct perf_evsel *evsel,
112 					     perf_event__handler_t process);
113 int perf_event__synthesize_event_update_scale(struct perf_tool *tool,
114 					      struct perf_evsel *evsel,
115 					      perf_event__handler_t process);
116 int perf_event__synthesize_event_update_name(struct perf_tool *tool,
117 					     struct perf_evsel *evsel,
118 					     perf_event__handler_t process);
119 int perf_event__synthesize_event_update_cpus(struct perf_tool *tool,
120 					     struct perf_evsel *evsel,
121 					     perf_event__handler_t process);
122 int perf_event__process_attr(struct perf_tool *tool, union perf_event *event,
123 			     struct perf_evlist **pevlist);
124 int perf_event__process_event_update(struct perf_tool *tool,
125 				     union perf_event *event,
126 				     struct perf_evlist **pevlist);
127 size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp);
128 
129 int perf_event__synthesize_tracing_data(struct perf_tool *tool,
130 					int fd, struct perf_evlist *evlist,
131 					perf_event__handler_t process);
132 int perf_event__process_tracing_data(struct perf_tool *tool,
133 				     union perf_event *event,
134 				     struct perf_session *session);
135 
136 int 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);
140 int perf_event__process_build_id(struct perf_tool *tool,
141 				 union perf_event *event,
142 				 struct perf_session *session);
143 bool is_perf_magic(u64 magic);
144 
145 #define NAME_ALIGN 64
146 
147 int write_padded(int fd, const void *bf, size_t count, size_t count_aligned);
148 
149 /*
150  * arch specific callback
151  */
152 int get_cpuid(char *buffer, size_t sz);
153 
154 char *get_cpuid_str(void);
155 #endif /* __PERF_HEADER_H */
156