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v5.4
  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_LAST_FEATURE,
 47	HEADER_FEAT_BITS	= 256,
 48};
 49
 50enum perf_header_version {
 51	PERF_HEADER_VERSION_1,
 52	PERF_HEADER_VERSION_2,
 53};
 54
 55enum perf_dir_version {
 56	PERF_DIR_VERSION	= 1,
 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);
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
 
 
 
124void perf_header__set_feat(struct perf_header *header, int feat);
125void perf_header__clear_feat(struct perf_header *header, int feat);
126bool perf_header__has_feat(const struct perf_header *header, int feat);
127
128int perf_header__set_cmdline(int argc, const char **argv);
129
130int perf_header__process_sections(struct perf_header *header, int fd,
131				  void *data,
132				  int (*process)(struct perf_file_section *section,
133				  struct perf_header *ph,
134				  int feat, int fd, void *data));
135
136int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full);
137
138int perf_event__process_feature(struct perf_session *session,
139				union perf_event *event);
140int perf_event__process_attr(struct perf_tool *tool, union perf_event *event,
141			     struct evlist **pevlist);
142int perf_event__process_event_update(struct perf_tool *tool,
143				     union perf_event *event,
144				     struct evlist **pevlist);
145size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp);
146int perf_event__process_tracing_data(struct perf_session *session,
147				     union perf_event *event);
148int perf_event__process_build_id(struct perf_session *session,
149				 union perf_event *event);
150bool is_perf_magic(u64 magic);
151
152#define NAME_ALIGN 64
153
154struct feat_fd;
155
156int do_write(struct feat_fd *fd, const void *buf, size_t size);
157
158int write_padded(struct feat_fd *fd, const void *bf,
159		 size_t count, size_t count_aligned);
 
 
 
 
 
 
 
 
 
 
 
 
 
160
161/*
162 * arch specific callback
163 */
164int get_cpuid(char *buffer, size_t sz);
165
166char *get_cpuid_str(struct perf_pmu *pmu __maybe_unused);
167int strcmp_cpuid_str(const char *s1, const char *s2);
168#endif /* __PERF_HEADER_H */
v3.5.6
 
  1#ifndef __PERF_HEADER_H
  2#define __PERF_HEADER_H
  3
  4#include "../../../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_LAST_FEATURE,
 32	HEADER_FEAT_BITS	= 256,
 33};
 34
 
 
 
 
 
 
 
 
 
 35struct perf_file_section {
 36	u64 offset;
 37	u64 size;
 38};
 39
 40struct perf_file_header {
 41	u64				magic;
 42	u64				size;
 43	u64				attr_size;
 44	struct perf_file_section	attrs;
 45	struct perf_file_section	data;
 
 46	struct perf_file_section	event_types;
 47	DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
 48};
 49
 50struct perf_pipe_file_header {
 51	u64				magic;
 52	u64				size;
 53};
 54
 55struct perf_header;
 56
 57int perf_file_header__read(struct perf_file_header *header,
 58			   struct perf_header *ph, int fd);
 59
 60struct perf_header {
 61	int			frozen;
 62	bool			needs_swap;
 63	s64			attr_offset;
 64	u64			data_offset;
 65	u64			data_size;
 66	u64			event_offset;
 67	u64			event_size;
 68	DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
 
 
 
 
 
 
 
 
 
 
 69};
 70
 71struct perf_evlist;
 
 
 
 
 
 
 
 
 
 72struct perf_session;
 
 
 73
 74int perf_session__read_header(struct perf_session *session, int fd);
 75int perf_session__write_header(struct perf_session *session,
 76			       struct perf_evlist *evlist,
 77			       int fd, bool at_exit);
 78int perf_header__write_pipe(int fd);
 79
 80int perf_header__push_event(u64 id, const char *name);
 81char *perf_header__find_event(u64 id);
 82
 83void perf_header__set_feat(struct perf_header *header, int feat);
 84void perf_header__clear_feat(struct perf_header *header, int feat);
 85bool perf_header__has_feat(const struct perf_header *header, int feat);
 86
 87int perf_header__set_cmdline(int argc, const char **argv);
 88
 89int perf_header__process_sections(struct perf_header *header, int fd,
 90				  void *data,
 91				  int (*process)(struct perf_file_section *section,
 92				  struct perf_header *ph,
 93				  int feat, int fd, void *data));
 94
 95int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full);
 96
 97int build_id_cache__add_s(const char *sbuild_id, const char *debugdir,
 98			  const char *name, bool is_kallsyms);
 99int build_id_cache__remove_s(const char *sbuild_id, const char *debugdir);
100
101int perf_event__synthesize_attr(struct perf_tool *tool,
102				struct perf_event_attr *attr, u16 ids, u64 *id,
103				perf_event__handler_t process);
104int perf_event__synthesize_attrs(struct perf_tool *tool,
105				 struct perf_session *session,
106				 perf_event__handler_t process);
107int perf_event__process_attr(union perf_event *event, struct perf_evlist **pevlist);
108
109int perf_event__synthesize_event_type(struct perf_tool *tool,
110				      u64 event_id, char *name,
111				      perf_event__handler_t process,
112				      struct machine *machine);
113int perf_event__synthesize_event_types(struct perf_tool *tool,
114				       perf_event__handler_t process,
115				       struct machine *machine);
116int perf_event__process_event_type(struct perf_tool *tool,
117				   union perf_event *event);
118
119int perf_event__synthesize_tracing_data(struct perf_tool *tool,
120					int fd, struct perf_evlist *evlist,
121					perf_event__handler_t process);
122int perf_event__process_tracing_data(union perf_event *event,
123				     struct perf_session *session);
124
125int perf_event__synthesize_build_id(struct perf_tool *tool,
126				    struct dso *pos, u16 misc,
127				    perf_event__handler_t process,
128				    struct machine *machine);
129int perf_event__process_build_id(struct perf_tool *tool,
130				 union perf_event *event,
131				 struct perf_session *session);
132
133/*
134 * arch specific callback
135 */
136int get_cpuid(char *buffer, size_t sz);
137
 
 
138#endif /* __PERF_HEADER_H */