header.h revision 7e2f4e9d384d501cf86118ebac4b8de2b86eac53 
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
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_LAST_FEATURE,
34	HEADER_FEAT_BITS	= 256,
35};
36
37enum perf_header_version {
38	PERF_HEADER_VERSION_1,
39	PERF_HEADER_VERSION_2,
40};
41
42struct perf_file_section {
43	u64 offset;
44	u64 size;
45};
46
47struct perf_file_header {
48	u64				magic;
49	u64				size;
50	u64				attr_size;
51	struct perf_file_section	attrs;
52	struct perf_file_section	data;
53	/* event_types is ignored */
54	struct perf_file_section	event_types;
55	DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
56};
57
58struct perf_pipe_file_header {
59	u64				magic;
60	u64				size;
61};
62
63struct perf_header;
64
65int perf_file_header__read(struct perf_file_header *header,
66			   struct perf_header *ph, int fd);
67
68struct perf_session_env {
69	char			*hostname;
70	char			*os_release;
71	char			*version;
72	char			*arch;
73	int			nr_cpus_online;
74	int			nr_cpus_avail;
75	char			*cpu_desc;
76	char			*cpuid;
77	unsigned long long	total_mem;
78
79	int			nr_cmdline;
80	char			*cmdline;
81	int			nr_sibling_cores;
82	char			*sibling_cores;
83	int			nr_sibling_threads;
84	char			*sibling_threads;
85	int			nr_numa_nodes;
86	char			*numa_nodes;
87	int			nr_pmu_mappings;
88	char			*pmu_mappings;
89	int			nr_groups;
90};
91
92struct perf_header {
93	enum perf_header_version	version;
94	bool				needs_swap;
95	u64				data_offset;
96	u64				data_size;
97	u64				feat_offset;
98	DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
99	struct perf_session_env 	env;
100};
101
102struct perf_evlist;
103struct perf_session;
104
105int perf_session__read_header(struct perf_session *session);
106int perf_session__write_header(struct perf_session *session,
107			       struct perf_evlist *evlist,
108			       int fd, bool at_exit);
109int perf_header__write_pipe(int fd);
110
111void perf_header__set_feat(struct perf_header *header, int feat);
112void perf_header__clear_feat(struct perf_header *header, int feat);
113bool perf_header__has_feat(const struct perf_header *header, int feat);
114
115int perf_header__set_cmdline(int argc, const char **argv);
116
117int perf_header__process_sections(struct perf_header *header, int fd,
118				  void *data,
119				  int (*process)(struct perf_file_section *section,
120				  struct perf_header *ph,
121				  int feat, int fd, void *data));
122
123int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full);
124
125int build_id_cache__add_s(const char *sbuild_id, const char *debugdir,
126			  const char *name, bool is_kallsyms, bool is_vdso);
127int build_id_cache__remove_s(const char *sbuild_id, const char *debugdir);
128
129int perf_event__synthesize_attr(struct perf_tool *tool,
130				struct perf_event_attr *attr, u32 ids, u64 *id,
131				perf_event__handler_t process);
132int perf_event__synthesize_attrs(struct perf_tool *tool,
133				 struct perf_session *session,
134				 perf_event__handler_t process);
135int perf_event__process_attr(struct perf_tool *tool, union perf_event *event,
136			     struct perf_evlist **pevlist);
137
138int perf_event__synthesize_tracing_data(struct perf_tool *tool,
139					int fd, struct perf_evlist *evlist,
140					perf_event__handler_t process);
141int perf_event__process_tracing_data(struct perf_tool *tool,
142				     union perf_event *event,
143				     struct perf_session *session);
144
145int perf_event__synthesize_build_id(struct perf_tool *tool,
146				    struct dso *pos, u16 misc,
147				    perf_event__handler_t process,
148				    struct machine *machine);
149int perf_event__process_build_id(struct perf_tool *tool,
150				 union perf_event *event,
151				 struct perf_session *session);
152bool is_perf_magic(u64 magic);
153
154/*
155 * arch specific callback
156 */
157int get_cpuid(char *buffer, size_t sz);
158
159#endif /* __PERF_HEADER_H */
160