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header.h
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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 "types.h"
8 #include "event.h"
9 
10 #include <linux/bitmap.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_LAST_FEATURE,
33  HEADER_FEAT_BITS = 256,
34 };
35 
36 struct perf_file_section {
37  u64 offset;
38  u64 size;
39 };
40 
41 struct perf_file_header {
42  u64 magic;
43  u64 size;
44  u64 attr_size;
45  struct perf_file_section attrs;
46  struct perf_file_section data;
47  struct perf_file_section event_types;
48  DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
49 };
50 
51 struct perf_pipe_file_header {
52  u64 magic;
53  u64 size;
54 };
55 
56 struct perf_header;
57 
58 int perf_file_header__read(struct perf_file_header *header,
59  struct perf_header *ph, int fd);
60 
61 struct perf_session_env {
62  char *hostname;
63  char *os_release;
64  char *version;
65  char *arch;
66  int nr_cpus_online;
67  int nr_cpus_avail;
68  char *cpu_desc;
69  char *cpuid;
70  unsigned long long total_mem;
71 
72  int nr_cmdline;
73  char *cmdline;
74  int nr_sibling_cores;
75  char *sibling_cores;
76  int nr_sibling_threads;
77  char *sibling_threads;
78  int nr_numa_nodes;
79  char *numa_nodes;
80  int nr_pmu_mappings;
81  char *pmu_mappings;
82 };
83 
84 struct perf_header {
85  int frozen;
86  bool needs_swap;
87  s64 attr_offset;
88  u64 data_offset;
89  u64 data_size;
90  u64 event_offset;
91  u64 event_size;
92  DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
93  struct perf_session_env env;
94 };
95 
96 struct perf_evlist;
97 struct perf_session;
98 
99 int perf_session__read_header(struct perf_session *session, int fd);
100 int perf_session__write_header(struct perf_session *session,
101  struct perf_evlist *evlist,
102  int fd, bool at_exit);
103 int perf_header__write_pipe(int fd);
104 
105 int perf_header__push_event(u64 id, const char *name);
106 char *perf_header__find_event(u64 id);
107 
108 void perf_header__set_feat(struct perf_header *header, int feat);
109 void perf_header__clear_feat(struct perf_header *header, int feat);
110 bool perf_header__has_feat(const struct perf_header *header, int feat);
111 
112 int perf_header__set_cmdline(int argc, const char **argv);
113 
114 int perf_header__process_sections(struct perf_header *header, int fd,
115  void *data,
116  int (*process)(struct perf_file_section *section,
117  struct perf_header *ph,
118  int feat, int fd, void *data));
119 
120 int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full);
121 
122 int build_id_cache__add_s(const char *sbuild_id, const char *debugdir,
123  const char *name, bool is_kallsyms, bool is_vdso);
124 int build_id_cache__remove_s(const char *sbuild_id, const char *debugdir);
125 
126 int perf_event__synthesize_attr(struct perf_tool *tool,
127  struct perf_event_attr *attr, u32 ids, u64 *id,
128  perf_event__handler_t process);
129 int perf_event__synthesize_attrs(struct perf_tool *tool,
130  struct perf_session *session,
131  perf_event__handler_t process);
132 int perf_event__process_attr(union perf_event *event, struct perf_evlist **pevlist);
133 
134 int perf_event__synthesize_event_type(struct perf_tool *tool,
135  u64 event_id, char *name,
136  perf_event__handler_t process,
137  struct machine *machine);
138 int perf_event__synthesize_event_types(struct perf_tool *tool,
139  perf_event__handler_t process,
140  struct machine *machine);
141 int perf_event__process_event_type(struct perf_tool *tool,
142  union perf_event *event);
143 
144 int perf_event__synthesize_tracing_data(struct perf_tool *tool,
145  int fd, struct perf_evlist *evlist,
146  perf_event__handler_t process);
147 int perf_event__process_tracing_data(union perf_event *event,
148  struct perf_session *session);
149 
150 int perf_event__synthesize_build_id(struct perf_tool *tool,
151  struct dso *pos, u16 misc,
152  perf_event__handler_t process,
153  struct machine *machine);
154 int perf_event__process_build_id(struct perf_tool *tool,
155  union perf_event *event,
156  struct perf_session *session);
157 
158 /*
159  * arch specific callback
160  */
161 int get_cpuid(char *buffer, size_t sz);
162 
163 #endif /* __PERF_HEADER_H */
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