/* SPDX-License-Identifier: GPL-2.0 */#ifndef __PERF_HEADER_H#define __PERF_HEADER_H #include <linux/stddef.h>#include <linux/perf_event.h>#include <sys/types.h>#include <stdio.h> // FILE#include <stdbool.h>#include <linux/bitmap.h>#include <linux/types.h>#include "env.h"#include <perf/cpumap.h> struct evlist;union perf_event;struct perf_header;struct perf_session;struct perf_tool; enum {	HEADER_RESERVED		= 0,	/* always cleared */	HEADER_FIRST_FEATURE	= 1,	HEADER_TRACING_DATA	= 1,	HEADER_BUILD_ID, 	HEADER_HOSTNAME,	HEADER_OSRELEASE,	HEADER_VERSION,	HEADER_ARCH,	HEADER_NRCPUS,	HEADER_CPUDESC,	HEADER_CPUID,	HEADER_TOTAL_MEM,	HEADER_CMDLINE,	HEADER_EVENT_DESC,	HEADER_CPU_TOPOLOGY,	HEADER_NUMA_TOPOLOGY,	HEADER_BRANCH_STACK,	HEADER_PMU_MAPPINGS,	HEADER_GROUP_DESC,	HEADER_AUXTRACE,	HEADER_STAT,	HEADER_CACHE,	HEADER_SAMPLE_TIME,	HEADER_MEM_TOPOLOGY,	HEADER_CLOCKID,	HEADER_DIR_FORMAT,	HEADER_BPF_PROG_INFO,	HEADER_BPF_BTF,	HEADER_COMPRESSED,	HEADER_CPU_PMU_CAPS,	HEADER_CLOCK_DATA,	HEADER_HYBRID_TOPOLOGY,	HEADER_PMU_CAPS,	HEADER_CPU_DOMAIN_INFO,	HEADER_E_MACHINE,	HEADER_CLN_SIZE,	HEADER_LAST_FEATURE,	HEADER_FEAT_BITS	= 256,}; enum perf_header_version {	PERF_HEADER_VERSION_1,	PERF_HEADER_VERSION_2,}; struct perf_file_section {	u64 offset;	u64 size;}; /** * struct perf_file_header: Header representation on disk. */struct perf_file_header {	/** @magic: Holds "PERFILE2". */	u64				magic;	/** @size: Size of this header - sizeof(struct perf_file_header). */	u64				size;	/**	 * @attr_size: Size of attrs entries - sizeof(struct perf_event_attr) +	 * sizeof(struct perf_file_section).	 */	u64				attr_size;	/** @attrs: Offset and size of file section holding attributes. */	struct perf_file_section	attrs;	/** @data: Offset and size of file section holding regular event data. */	struct perf_file_section	data;	/** @event_types: Ignored. */	struct perf_file_section	event_types;	/**	 * @adds_features: Bitmap of features. The features are immediately after the data section.	 */	DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);}; struct perf_pipe_file_header {	u64				magic;	u64				size;}; int perf_file_header__read(struct perf_file_header *header,			   struct perf_header *ph, int fd); struct perf_header {	enum perf_header_version	version;	bool				needs_swap;	u64				data_offset;	u64				data_size;	u64				feat_offset;	DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);	int				last_feat;	struct perf_env 	env;}; struct feat_fd {	struct perf_header *ph;	int		   fd;	void		   *buf;	/* Either buf != NULL or fd >= 0 */	ssize_t		   offset;	size_t		   size;	struct evsel	   *events;}; struct perf_header_feature_ops {	int	   (*write)(struct feat_fd *ff, struct evlist *evlist);	void	   (*print)(struct feat_fd *ff, FILE *fp);	int	   (*process)(struct feat_fd *ff, void *data);	const char *name;	bool	   full_only;	bool	   synthesize;}; extern const char perf_version_string[]; const char *header_feat__name(unsigned int id); int perf_session__read_header(struct perf_session *session);int perf_session__write_header(struct perf_session *session,			       struct evlist *evlist,			       int fd, bool at_exit);int perf_header__write_pipe(int fd); /* feat_writer writes a feature section to output */struct feat_writer {	int (*write)(struct feat_writer *fw, void *buf, size_t sz);}; /* feat_copier copies a feature section using feat_writer to output */struct feat_copier {	int (*copy)(struct feat_copier *fc, int feat, struct feat_writer *fw);}; int perf_session__inject_header(struct perf_session *session,				struct evlist *evlist,				int fd,				struct feat_copier *fc,				bool write_attrs_after_data); size_t perf_session__data_offset(struct evlist *evlist); void perf_header__set_feat(struct perf_header *header, int feat);void perf_header__clear_feat(struct perf_header *header, int feat);bool perf_header__has_feat(const struct perf_header *header, int feat); int perf_header__set_cmdline(int argc, const char **argv); int perf_header__process_sections(struct perf_header *header, int fd,				  void *data,				  int (*process)(struct perf_file_section *section,				  struct perf_header *ph,				  int feat, int fd, void *data)); int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full); int perf_event__process_feature(const struct perf_tool *tool,				struct perf_session *session,				union perf_event *event);int perf_event__process_attr(const struct perf_tool *tool, union perf_event *event,			     struct evlist **pevlist);int perf_event__process_event_update(const struct perf_tool *tool,				     union perf_event *event,				     struct evlist **pevlist);size_t perf_event__fprintf_attr(union perf_event *event, FILE *fp);size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp);#ifdef HAVE_LIBTRACEEVENTint perf_event__process_tracing_data(const struct perf_tool *tool,				     struct perf_session *session,				     union perf_event *event);#endifint perf_event__process_build_id(const struct perf_tool *tool,				 struct perf_session *session,				 union perf_event *event);bool is_perf_magic(u64 magic); #define NAME_ALIGN 64 struct feat_fd; int do_write(struct feat_fd *fd, const void *buf, size_t size); int write_padded(struct feat_fd *fd, const void *bf,		 size_t count, size_t count_aligned); #define MAX_CACHE_LVL 4 int build_caches_for_cpu(u32 cpu, struct cpu_cache_level caches[], u32 *cntp); #define DEFAULT_CACHELINE_SIZE 64 /* * arch specific callback */int get_cpuid(char *buffer, size_t sz, struct perf_cpu cpu); char *get_cpuid_str(struct perf_cpu cpu); char *get_cpuid_allow_env_override(struct perf_cpu cpu); int strcmp_cpuid_str(const char *s1, const char *s2); struct cpu_domain_map **build_cpu_domain_map(u32 *schedstat_version, u32 *max_sched_domains,					     u32 nr);#endif /* __PERF_HEADER_H */