Adding upstream version 1:1.7.1.upstream/1%1.7.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

4 files changed, 1036 insertions, 0 deletions

diff --git a/include/traceevent/event-parse.h b/include/traceevent/event-parse.h
new file mode 100644
index 0000000..2171ad7
--- /dev/null
+++ b/include/traceevent/event-parse.h
@@ -0,0 +1,823 @@
+/* SPDX-License-Identifier: LGPL-2.1 */
+/*
+ * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
+ *
+ */
+#ifndef __TEP_PARSE_EVENTS_H
+#define __TEP_PARSE_EVENTS_H
+
+#include <stdbool.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <regex.h>
+#include <string.h>
+
+#include "trace-seq.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef __maybe_unused
+#define __maybe_unused __attribute__((unused))
+#endif
+
+#ifndef DEBUG_RECORD
+#define DEBUG_RECORD 0
+#endif
+
+struct tep_record {
+	unsigned long long	ts;
+	unsigned long long	offset;
+	long long		missed_events;	/* buffer dropped events before */
+	int			record_size;	/* size of binary record */
+	int			size;		/* size of data */
+	void			*data;
+	int			cpu;
+	int			ref_count;
+	int			locked;		/* Do not free, even if ref_count is zero */
+	void			*priv;
+#if DEBUG_RECORD
+	struct tep_record	*prev;
+	struct tep_record	*next;
+	long			alloc_addr;
+#endif
+};
+
+/* ----------------------- tep ----------------------- */
+
+struct tep_handle;
+struct tep_event;
+
+typedef int (*tep_event_handler_func)(struct trace_seq *s,
+				      struct tep_record *record,
+				      struct tep_event *event,
+				      void *context);
+
+typedef int (*tep_plugin_load_func)(struct tep_handle *tep);
+typedef int (*tep_plugin_unload_func)(struct tep_handle *tep);
+
+struct tep_plugin_option {
+	struct tep_plugin_option	*next;
+	void				*handle;
+	char				*file;
+	char				*name;
+	char				*plugin_alias;
+	char				*description;
+	const char			*value;
+	void				*priv;
+	int				set;
+};
+
+/*
+ * Plugin hooks that can be called:
+ *
+ * TEP_PLUGIN_LOADER:  (required)
+ *   The function name to initialized the plugin.
+ *
+ *   int TEP_PLUGIN_LOADER(struct tep_handle *tep)
+ *
+ * TEP_PLUGIN_UNLOADER:  (optional)
+ *   The function called just before unloading
+ *
+ *   int TEP_PLUGIN_UNLOADER(struct tep_handle *tep)
+ *
+ * TEP_PLUGIN_OPTIONS:  (optional)
+ *   Plugin options that can be set before loading
+ *
+ *   struct tep_plugin_option TEP_PLUGIN_OPTIONS[] = {
+ *	{
+ *		.name = "option-name",
+ *		.plugin_alias = "override-file-name", (optional)
+ *		.description = "description of option to show users",
+ *	},
+ *	{
+ *		.name = NULL,
+ *	},
+ *   };
+ *
+ *   Array must end with .name = NULL;
+ *
+ *
+ *   .plugin_alias is used to give a shorter name to access
+ *   the vairable. Useful if a plugin handles more than one event.
+ *
+ *   If .value is not set, then it is considered a boolean and only
+ *   .set will be processed. If .value is defined, then it is considered
+ *   a string option and .set will be ignored.
+ *
+ * TEP_PLUGIN_ALIAS: (optional)
+ *   The name to use for finding options (uses filename if not defined)
+ */
+#define TEP_PLUGIN_LOADER tep_plugin_loader
+#define TEP_PLUGIN_UNLOADER tep_plugin_unloader
+#define TEP_PLUGIN_OPTIONS tep_plugin_options
+#define TEP_PLUGIN_ALIAS tep_plugin_alias
+#define _MAKE_STR(x)	#x
+#define MAKE_STR(x)	_MAKE_STR(x)
+#define TEP_PLUGIN_LOADER_NAME MAKE_STR(TEP_PLUGIN_LOADER)
+#define TEP_PLUGIN_UNLOADER_NAME MAKE_STR(TEP_PLUGIN_UNLOADER)
+#define TEP_PLUGIN_OPTIONS_NAME MAKE_STR(TEP_PLUGIN_OPTIONS)
+#define TEP_PLUGIN_ALIAS_NAME MAKE_STR(TEP_PLUGIN_ALIAS)
+
+enum tep_format_flags {
+	TEP_FIELD_IS_ARRAY	= 1,
+	TEP_FIELD_IS_POINTER	= 2,
+	TEP_FIELD_IS_SIGNED	= 4,
+	TEP_FIELD_IS_STRING	= 8,
+	TEP_FIELD_IS_DYNAMIC	= 16,
+	TEP_FIELD_IS_LONG	= 32,
+	TEP_FIELD_IS_FLAG	= 64,
+	TEP_FIELD_IS_SYMBOLIC	= 128,
+	TEP_FIELD_IS_RELATIVE	= 256,
+};
+
+struct tep_format_field {
+	struct tep_format_field	*next;
+	struct tep_event	*event;
+	char			*type;
+	char			*name;
+	char			*alias;
+	int			offset;
+	int			size;
+	unsigned int		arraylen;
+	unsigned int		elementsize;
+	unsigned long		flags;
+};
+
+struct tep_format {
+	int			nr_common;
+	int			nr_fields;
+	struct tep_format_field	*common_fields;
+	struct tep_format_field	*fields;
+};
+
+struct tep_print_arg_atom {
+	char			*atom;
+};
+
+struct tep_print_arg_string {
+	char			*string;
+	int			offset;		// for backward compatibility
+	struct tep_format_field	*field;
+};
+
+struct tep_print_arg_bitmask {
+	char			*bitmask;
+	int			offset;		// for backward compatibility
+	struct tep_format_field	*field;
+};
+
+struct tep_print_arg_field {
+	char			*name;
+	struct tep_format_field	*field;
+};
+
+struct tep_print_flag_sym {
+	struct tep_print_flag_sym	*next;
+	char				*value;
+	char				*str;
+};
+
+struct tep_print_arg_typecast {
+	char 			*type;
+	struct tep_print_arg	*item;
+};
+
+struct tep_print_arg_flags {
+	struct tep_print_arg		*field;
+	char				*delim;
+	struct tep_print_flag_sym	*flags;
+};
+
+struct tep_print_arg_symbol {
+	struct tep_print_arg		*field;
+	struct tep_print_flag_sym	*symbols;
+};
+
+struct tep_print_arg_hex {
+	struct tep_print_arg	*field;
+	struct tep_print_arg	*size;
+};
+
+struct tep_print_arg_int_array {
+	struct tep_print_arg	*field;
+	struct tep_print_arg	*count;
+	struct tep_print_arg	*el_size;
+};
+
+struct tep_print_arg_dynarray {
+	struct tep_format_field	*field;
+	struct tep_print_arg	*index;
+};
+
+struct tep_print_arg;
+
+struct tep_print_arg_op {
+	char			*op;
+	int			prio;
+	struct tep_print_arg	*left;
+	struct tep_print_arg	*right;
+};
+
+struct tep_function_handler;
+
+struct tep_print_arg_func {
+	struct tep_function_handler	*func;
+	struct tep_print_arg		*args;
+};
+
+enum tep_print_arg_type {
+	TEP_PRINT_NULL,
+	TEP_PRINT_ATOM,
+	TEP_PRINT_FIELD,
+	TEP_PRINT_FLAGS,
+	TEP_PRINT_SYMBOL,
+	TEP_PRINT_HEX,
+	TEP_PRINT_INT_ARRAY,
+	TEP_PRINT_TYPE,
+	TEP_PRINT_STRING,
+	TEP_PRINT_BSTRING,
+	TEP_PRINT_DYNAMIC_ARRAY,
+	TEP_PRINT_OP,
+	TEP_PRINT_FUNC,
+	TEP_PRINT_BITMASK,
+	TEP_PRINT_DYNAMIC_ARRAY_LEN,
+	TEP_PRINT_HEX_STR,
+	TEP_PRINT_CPUMASK,
+};
+
+struct tep_print_arg {
+	struct tep_print_arg		*next;
+	enum tep_print_arg_type		type;
+	union {
+		struct tep_print_arg_atom	atom;
+		struct tep_print_arg_field	field;
+		struct tep_print_arg_typecast	typecast;
+		struct tep_print_arg_flags	flags;
+		struct tep_print_arg_symbol	symbol;
+		struct tep_print_arg_hex	hex;
+		struct tep_print_arg_int_array	int_array;
+		struct tep_print_arg_func	func;
+		struct tep_print_arg_string	string;
+		struct tep_print_arg_bitmask	bitmask;
+		struct tep_print_arg_op		op;
+		struct tep_print_arg_dynarray	dynarray;
+	};
+};
+
+struct tep_print_parse;
+
+struct tep_print_fmt {
+	char			*format;
+	struct tep_print_arg	*args;
+	struct tep_print_parse	*print_cache;
+};
+
+struct tep_event {
+	struct tep_handle	*tep;
+	char			*name;
+	int			id;
+	int			flags;
+	struct tep_format	format;
+	struct tep_print_fmt	print_fmt;
+	char			*system;
+	tep_event_handler_func	handler;
+	void			*context;
+};
+
+enum {
+	TEP_EVENT_FL_ISFTRACE	= 0x01,
+	TEP_EVENT_FL_ISPRINT	= 0x02,
+	TEP_EVENT_FL_ISBPRINT	= 0x04,
+	TEP_EVENT_FL_ISFUNCENT	= 0x10,
+	TEP_EVENT_FL_ISFUNCRET	= 0x20,
+	TEP_EVENT_FL_NOHANDLE	= 0x40,
+	TEP_EVENT_FL_PRINTRAW	= 0x80,
+
+	TEP_EVENT_FL_FAILED	= 0x80000000
+};
+
+enum tep_event_sort_type {
+	TEP_EVENT_SORT_ID,
+	TEP_EVENT_SORT_NAME,
+	TEP_EVENT_SORT_SYSTEM,
+};
+
+enum tep_event_type {
+	TEP_EVENT_ERROR,
+	TEP_EVENT_NONE,
+	TEP_EVENT_SPACE,
+	TEP_EVENT_NEWLINE,
+	TEP_EVENT_OP,
+	TEP_EVENT_DELIM,
+	TEP_EVENT_ITEM,
+	TEP_EVENT_DQUOTE,
+	TEP_EVENT_SQUOTE,
+};
+
+typedef unsigned long long (*tep_func_handler)(struct trace_seq *s,
+					       unsigned long long *args);
+
+enum tep_func_arg_type {
+	TEP_FUNC_ARG_VOID,
+	TEP_FUNC_ARG_INT,
+	TEP_FUNC_ARG_LONG,
+	TEP_FUNC_ARG_STRING,
+	TEP_FUNC_ARG_PTR,
+	TEP_FUNC_ARG_MAX_TYPES
+};
+
+enum tep_flag {
+	TEP_NSEC_OUTPUT		= 1,	/* output in NSECS */
+	TEP_DISABLE_SYS_PLUGINS	= 1 << 1,
+	TEP_DISABLE_PLUGINS	= 1 << 2,
+};
+
+#define TEP_ERRORS 							      \
+	_PE(MEM_ALLOC_FAILED,	"failed to allocate memory"),		      \
+	_PE(PARSE_EVENT_FAILED,	"failed to parse event"),		      \
+	_PE(READ_ID_FAILED,	"failed to read event id"),		      \
+	_PE(READ_FORMAT_FAILED,	"failed to read event format"),		      \
+	_PE(READ_PRINT_FAILED,	"failed to read event print fmt"), 	      \
+	_PE(OLD_FTRACE_ARG_FAILED,"failed to allocate field name for ftrace"),\
+	_PE(INVALID_ARG_TYPE,	"invalid argument type"),		      \
+	_PE(INVALID_EXP_TYPE,	"invalid expression type"),		      \
+	_PE(INVALID_OP_TYPE,	"invalid operator type"),		      \
+	_PE(INVALID_EVENT_NAME,	"invalid event name"),			      \
+	_PE(EVENT_NOT_FOUND,	"no event found"),			      \
+	_PE(SYNTAX_ERROR,	"syntax error"),			      \
+	_PE(ILLEGAL_RVALUE,	"illegal rvalue"),			      \
+	_PE(ILLEGAL_LVALUE,	"illegal lvalue for string comparison"),      \
+	_PE(INVALID_REGEX,	"regex did not compute"),		      \
+	_PE(ILLEGAL_STRING_CMP,	"illegal comparison for string"), 	      \
+	_PE(ILLEGAL_INTEGER_CMP,"illegal comparison for integer"), 	      \
+	_PE(REPARENT_NOT_OP,	"cannot reparent other than OP"),	      \
+	_PE(REPARENT_FAILED,	"failed to reparent filter OP"),	      \
+	_PE(BAD_FILTER_ARG,	"bad arg in filter tree"),		      \
+	_PE(UNEXPECTED_TYPE,	"unexpected type (not a value)"),	      \
+	_PE(ILLEGAL_TOKEN,	"illegal token"),			      \
+	_PE(INVALID_PAREN,	"open parenthesis cannot come here"), 	      \
+	_PE(UNBALANCED_PAREN,	"unbalanced number of parenthesis"),	      \
+	_PE(UNKNOWN_TOKEN,	"unknown token"),			      \
+	_PE(FILTER_NOT_FOUND,	"no filter found"),			      \
+	_PE(NOT_A_NUMBER,	"must have number field"),		      \
+	_PE(NO_FILTER,		"no filters exists"),			      \
+	_PE(FILTER_MISS,	"record does not match to filter")
+
+#undef _PE
+#define _PE(__code, __str) TEP_ERRNO__ ## __code
+enum tep_errno {
+	TEP_ERRNO__SUCCESS			= 0,
+	TEP_ERRNO__FILTER_MATCH			= TEP_ERRNO__SUCCESS,
+
+	/*
+	 * Choose an arbitrary negative big number not to clash with standard
+	 * errno since SUS requires the errno has distinct positive values.
+	 * See 'Issue 6' in the link below.
+	 *
+	 * https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
+	 */
+	__TEP_ERRNO__START			= -100000,
+
+	TEP_ERRORS,
+
+	__TEP_ERRNO__END,
+};
+#undef _PE
+
+struct tep_plugin_list;
+
+#define INVALID_PLUGIN_LIST_OPTION	((char **)((unsigned long)-1))
+
+enum tep_plugin_load_priority {
+	TEP_PLUGIN_FIRST,
+	TEP_PLUGIN_LAST,
+};
+
+int tep_add_plugin_path(struct tep_handle *tep, char *path,
+			enum tep_plugin_load_priority prio);
+struct tep_plugin_list *tep_load_plugins(struct tep_handle *tep);
+void tep_unload_plugins(struct tep_plugin_list *plugin_list,
+			struct tep_handle *tep);
+void tep_load_plugins_hook(struct tep_handle *tep, const char *suffix,
+			   void (*load_plugin)(struct tep_handle *tep,
+					       const char *path,
+					       const char *name,
+					       void *data),
+			   void *data);
+char **tep_plugin_list_options(void);
+void tep_plugin_free_options_list(char **list);
+int tep_plugin_add_options(const char *name,
+			   struct tep_plugin_option *options);
+int tep_plugin_add_option(const char *name, const char *val);
+void tep_plugin_remove_options(struct tep_plugin_option *options);
+void tep_plugin_print_options(struct trace_seq *s);
+void tep_print_plugins(struct trace_seq *s,
+			const char *prefix, const char *suffix,
+			const struct tep_plugin_list *list);
+
+/* tep_handle */
+typedef char *(tep_func_resolver_t)(void *priv,
+				    unsigned long long *addrp, char **modp);
+void tep_set_flag(struct tep_handle *tep, int flag);
+void tep_clear_flag(struct tep_handle *tep, enum tep_flag flag);
+bool tep_test_flag(struct tep_handle *tep, enum tep_flag flags);
+
+static inline int tep_is_bigendian(void)
+{
+	unsigned char str[] = { 0x1, 0x2, 0x3, 0x4 };
+	unsigned int val;
+
+	memcpy(&val, str, 4);
+	return val == 0x01020304;
+}
+
+/* taken from kernel/trace/trace.h */
+enum trace_flag_type {
+	TRACE_FLAG_IRQS_OFF		= 0x01,
+	TRACE_FLAG_IRQS_NOSUPPORT	= 0x02,
+	TRACE_FLAG_NEED_RESCHED		= 0x04,
+	TRACE_FLAG_HARDIRQ		= 0x08,
+	TRACE_FLAG_SOFTIRQ		= 0x10,
+};
+
+int tep_set_function_resolver(struct tep_handle *tep,
+			      tep_func_resolver_t *func, void *priv);
+void tep_reset_function_resolver(struct tep_handle *tep);
+int tep_register_comm(struct tep_handle *tep, const char *comm, int pid);
+int tep_override_comm(struct tep_handle *tep, const char *comm, int pid);
+int tep_parse_saved_cmdlines(struct tep_handle *tep, const char *buf);
+int tep_parse_kallsyms(struct tep_handle *tep, const char *kallsyms);
+int tep_register_function(struct tep_handle *tep, char *name,
+			  unsigned long long addr, char *mod);
+int tep_parse_printk_formats(struct tep_handle *tep, const char *buf);
+int tep_register_print_string(struct tep_handle *tep, const char *fmt,
+			      unsigned long long addr);
+bool tep_is_pid_registered(struct tep_handle *tep, int pid);
+
+struct tep_event *tep_get_event(struct tep_handle *tep, int index);
+
+#define TEP_PRINT_INFO		"INFO"
+#define TEP_PRINT_INFO_RAW	"INFO_RAW"
+#define TEP_PRINT_COMM		"COMM"
+#define TEP_PRINT_LATENCY	"LATENCY"
+#define TEP_PRINT_NAME		"NAME"
+#define TEP_PRINT_PID		1U
+#define TEP_PRINT_TIME		2U
+#define TEP_PRINT_CPU		3U
+
+void tep_print_event(struct tep_handle *tep, struct trace_seq *s,
+		     struct tep_record *record, const char *fmt, ...)
+	__attribute__ ((format (printf, 4, 5)));
+
+int tep_parse_header_page(struct tep_handle *tep, char *buf, unsigned long size,
+			  int long_size);
+
+enum tep_errno tep_parse_event(struct tep_handle *tep, const char *buf,
+			       unsigned long size, const char *sys);
+enum tep_errno tep_parse_format(struct tep_handle *tep,
+				struct tep_event **eventp,
+				const char *buf,
+				unsigned long size, const char *sys);
+
+void *tep_get_field_raw(struct trace_seq *s, struct tep_event *event,
+			const char *name, struct tep_record *record,
+			int *len, int err);
+
+int tep_get_field_val(struct trace_seq *s, struct tep_event *event,
+		      const char *name, struct tep_record *record,
+		      unsigned long long *val, int err);
+int tep_get_common_field_val(struct trace_seq *s, struct tep_event *event,
+			     const char *name, struct tep_record *record,
+			     unsigned long long *val, int err);
+int tep_get_any_field_val(struct trace_seq *s, struct tep_event *event,
+			  const char *name, struct tep_record *record,
+			  unsigned long long *val, int err);
+
+int tep_print_num_field(struct trace_seq *s, const char *fmt,
+			struct tep_event *event, const char *name,
+			struct tep_record *record, int err);
+
+int tep_print_func_field(struct trace_seq *s, const char *fmt,
+			 struct tep_event *event, const char *name,
+			 struct tep_record *record, int err);
+
+enum tep_reg_handler {
+	TEP_REGISTER_SUCCESS = 0,
+	TEP_REGISTER_SUCCESS_OVERWRITE,
+};
+
+int tep_register_event_handler(struct tep_handle *tep, int id,
+			       const char *sys_name, const char *event_name,
+			       tep_event_handler_func func, void *context);
+int tep_unregister_event_handler(struct tep_handle *tep, int id,
+				 const char *sys_name, const char *event_name,
+				 tep_event_handler_func func, void *context);
+int tep_register_print_function(struct tep_handle *tep,
+				tep_func_handler func,
+				enum tep_func_arg_type ret_type,
+				char *name, ...);
+int tep_unregister_print_function(struct tep_handle *tep,
+				  tep_func_handler func, char *name);
+
+struct tep_format_field *tep_find_common_field(struct tep_event *event, const char *name);
+struct tep_format_field *tep_find_field(struct tep_event *event, const char *name);
+struct tep_format_field *tep_find_any_field(struct tep_event *event, const char *name);
+
+const char *tep_find_function(struct tep_handle *tep, unsigned long long addr);
+unsigned long long
+tep_find_function_address(struct tep_handle *tep, unsigned long long addr);
+int tep_find_function_info(struct tep_handle *tep, unsigned long long addr,
+			   const char **name, unsigned long long *start,
+			   unsigned long *size);
+unsigned long long tep_read_number(struct tep_handle *tep, const void *ptr, int size);
+int tep_read_number_field(struct tep_format_field *field, const void *data,
+			  unsigned long long *value);
+
+struct tep_event *tep_get_first_event(struct tep_handle *tep);
+int tep_get_events_count(struct tep_handle *tep);
+struct tep_event *tep_find_event(struct tep_handle *tep, int id);
+
+struct tep_event *
+tep_find_event_by_name(struct tep_handle *tep, const char *sys, const char *name);
+struct tep_event *
+tep_find_event_by_record(struct tep_handle *tep, struct tep_record *record);
+
+int tep_data_type(struct tep_handle *tep, struct tep_record *rec);
+int tep_data_pid(struct tep_handle *tep, struct tep_record *rec);
+int tep_data_preempt_count(struct tep_handle *tep, struct tep_record *rec);
+int tep_data_flags(struct tep_handle *tep, struct tep_record *rec);
+const char *tep_data_comm_from_pid(struct tep_handle *tep, int pid);
+struct tep_cmdline;
+struct tep_cmdline *tep_data_pid_from_comm(struct tep_handle *tep, const char *comm,
+					   struct tep_cmdline *next);
+int tep_cmdline_pid(struct tep_handle *tep, struct tep_cmdline *cmdline);
+
+void tep_print_field_content(struct trace_seq *s, void *data, int size,
+			     struct tep_format_field *field);
+void tep_record_print_fields(struct trace_seq *s,
+			     struct tep_record *record,
+			     struct tep_event *event);
+void tep_record_print_selected_fields(struct trace_seq *s,
+				      struct tep_record *record,
+				      struct tep_event *event,
+				      unsigned long long select_mask);
+void tep_print_fields(struct trace_seq *s, void *data,
+		      int size __maybe_unused, struct tep_event *event);
+int tep_strerror(struct tep_handle *tep, enum tep_errno errnum,
+		 char *buf, size_t buflen);
+
+struct tep_event **tep_list_events(struct tep_handle *tep, enum tep_event_sort_type);
+struct tep_event **tep_list_events_copy(struct tep_handle *tep,
+					enum tep_event_sort_type);
+struct tep_format_field **tep_event_common_fields(struct tep_event *event);
+struct tep_format_field **tep_event_fields(struct tep_event *event);
+
+int tep_get_function_count(struct tep_handle *tep);
+
+enum tep_endian {
+        TEP_LITTLE_ENDIAN = 0,
+        TEP_BIG_ENDIAN
+};
+int tep_get_cpus(struct tep_handle *tep);
+void tep_set_cpus(struct tep_handle *tep, int cpus);
+int tep_get_long_size(struct tep_handle *tep);
+void tep_set_long_size(struct tep_handle *tep, int long_size);
+int tep_get_page_size(struct tep_handle *tep);
+int tep_get_sub_buffer_size(struct tep_handle *tep);
+void tep_set_page_size(struct tep_handle *tep, int _page_size);
+bool tep_is_file_bigendian(struct tep_handle *tep);
+void tep_set_file_bigendian(struct tep_handle *tep, enum tep_endian endian);
+bool tep_is_local_bigendian(struct tep_handle *tep);
+void tep_set_local_bigendian(struct tep_handle *tep, enum tep_endian endian);
+int tep_get_header_page_size(struct tep_handle *tep);
+int tep_get_header_timestamp_size(struct tep_handle *tep);
+bool tep_is_old_format(struct tep_handle *tep);
+void tep_set_test_filters(struct tep_handle *tep, int test_filters);
+
+struct tep_handle *tep_alloc(void);
+void tep_free(struct tep_handle *tep);
+void tep_ref(struct tep_handle *tep);
+void tep_unref(struct tep_handle *tep);
+int tep_get_ref(struct tep_handle *tep);
+
+struct kbuffer *tep_kbuffer(struct tep_handle *tep);
+
+/* for debugging */
+void tep_print_funcs(struct tep_handle *tep);
+void tep_print_printk(struct tep_handle *tep);
+
+/* ----------------------- filtering ----------------------- */
+
+enum tep_filter_boolean_type {
+	TEP_FILTER_FALSE,
+	TEP_FILTER_TRUE,
+};
+
+enum tep_filter_op_type {
+	TEP_FILTER_OP_AND = 1,
+	TEP_FILTER_OP_OR,
+	TEP_FILTER_OP_NOT,
+};
+
+enum tep_filter_cmp_type {
+	TEP_FILTER_CMP_NONE,
+	TEP_FILTER_CMP_EQ,
+	TEP_FILTER_CMP_NE,
+	TEP_FILTER_CMP_GT,
+	TEP_FILTER_CMP_LT,
+	TEP_FILTER_CMP_GE,
+	TEP_FILTER_CMP_LE,
+	TEP_FILTER_CMP_MATCH,
+	TEP_FILTER_CMP_NOT_MATCH,
+	TEP_FILTER_CMP_REGEX,
+	TEP_FILTER_CMP_NOT_REGEX,
+};
+
+enum tep_filter_exp_type {
+	TEP_FILTER_EXP_NONE,
+	TEP_FILTER_EXP_ADD,
+	TEP_FILTER_EXP_SUB,
+	TEP_FILTER_EXP_MUL,
+	TEP_FILTER_EXP_DIV,
+	TEP_FILTER_EXP_MOD,
+	TEP_FILTER_EXP_RSHIFT,
+	TEP_FILTER_EXP_LSHIFT,
+	TEP_FILTER_EXP_AND,
+	TEP_FILTER_EXP_OR,
+	TEP_FILTER_EXP_XOR,
+	TEP_FILTER_EXP_NOT,
+};
+
+enum tep_filter_arg_type {
+	TEP_FILTER_ARG_NONE,
+	TEP_FILTER_ARG_BOOLEAN,
+	TEP_FILTER_ARG_VALUE,
+	TEP_FILTER_ARG_FIELD,
+	TEP_FILTER_ARG_EXP,
+	TEP_FILTER_ARG_OP,
+	TEP_FILTER_ARG_NUM,
+	TEP_FILTER_ARG_STR,
+};
+
+enum tep_filter_value_type {
+	TEP_FILTER_NUMBER,
+	TEP_FILTER_STRING,
+	TEP_FILTER_CHAR
+};
+
+struct tep_filter_arg;
+
+struct tep_filter_arg_boolean {
+	enum tep_filter_boolean_type	value;
+};
+
+struct tep_filter_arg_field {
+	struct tep_format_field		*field;
+};
+
+struct tep_filter_arg_value {
+	enum tep_filter_value_type	type;
+	union {
+		char			*str;
+		unsigned long long	val;
+	};
+};
+
+struct tep_filter_arg_op {
+	enum tep_filter_op_type		type;
+	struct tep_filter_arg		*left;
+	struct tep_filter_arg		*right;
+};
+
+struct tep_filter_arg_exp {
+	enum tep_filter_exp_type	type;
+	struct tep_filter_arg		*left;
+	struct tep_filter_arg		*right;
+};
+
+struct tep_filter_arg_num {
+	enum tep_filter_cmp_type	type;
+	struct tep_filter_arg		*left;
+	struct tep_filter_arg		*right;
+};
+
+struct tep_filter_arg_str {
+	enum tep_filter_cmp_type	type;
+	struct tep_format_field		*field;
+	char				*val;
+	char				*buffer;
+	regex_t				reg;
+};
+
+struct tep_filter_arg {
+	enum tep_filter_arg_type		type;
+	union {
+		struct tep_filter_arg_boolean	boolean;
+		struct tep_filter_arg_field	field;
+		struct tep_filter_arg_value	value;
+		struct tep_filter_arg_op	op;
+		struct tep_filter_arg_exp	exp;
+		struct tep_filter_arg_num	num;
+		struct tep_filter_arg_str	str;
+	};
+};
+
+struct tep_filter_type {
+	int			event_id;
+	struct tep_event	*event;
+	struct tep_filter_arg	*filter;
+};
+
+#define TEP_FILTER_ERROR_BUFSZ  1024
+
+struct tep_event_filter {
+	struct tep_handle	*tep;
+	int			filters;
+	struct tep_filter_type	*event_filters;
+	char			error_buffer[TEP_FILTER_ERROR_BUFSZ];
+};
+
+struct tep_event_filter *tep_filter_alloc(struct tep_handle *tep);
+
+/* for backward compatibility */
+#define FILTER_NONE		TEP_ERRNO__NO_FILTER
+#define FILTER_NOEXIST		TEP_ERRNO__FILTER_NOT_FOUND
+#define FILTER_MISS		TEP_ERRNO__FILTER_MISS
+#define FILTER_MATCH		TEP_ERRNO__FILTER_MATCH
+
+enum tep_errno tep_filter_add_filter_str(struct tep_event_filter *filter,
+					 const char *filter_str);
+
+enum tep_errno tep_filter_match(struct tep_event_filter *filter,
+				struct tep_record *record);
+
+int tep_filter_strerror(struct tep_event_filter *filter, enum tep_errno err,
+			char *buf, size_t buflen);
+
+int tep_event_filtered(struct tep_event_filter *filter,
+		       int event_id);
+
+void tep_filter_reset(struct tep_event_filter *filter);
+
+void tep_filter_free(struct tep_event_filter *filter);
+
+char *tep_filter_make_string(struct tep_event_filter *filter, int event_id);
+
+int tep_filter_remove_event(struct tep_event_filter *filter,
+			    int event_id);
+
+int tep_filter_copy(struct tep_event_filter *dest, struct tep_event_filter *source);
+
+int tep_filter_compare(struct tep_event_filter *filter1, struct tep_event_filter *filter2);
+
+/* Control library logs */
+enum tep_loglevel {
+	TEP_LOG_NONE = 0,
+	TEP_LOG_CRITICAL,
+	TEP_LOG_ERROR,
+	TEP_LOG_WARNING,
+	TEP_LOG_INFO,
+	TEP_LOG_DEBUG,
+	TEP_LOG_ALL
+};
+void tep_set_loglevel(enum tep_loglevel level);
+
+/*
+ * Part of the KVM plugin. Will pass the current @event and @record
+ * as well as a pointer to the address to a guest kernel function.
+ * This is currently a weak function defined in the KVM plugin and
+ * should never be called. But a tool can override it, and this will
+ * be called when the kvm plugin has an address it needs the function
+ * name of.
+ *
+ * This function should return the function name for the given address
+ * and optionally, it can update @paddr to include the start of the function
+ * such that the kvm plugin can include an offset.
+ *
+ * For an application to be able to override the weak version in the
+ * plugin, it must be compiled with the gcc -rdynamic option that will
+ * allow the dynamic linker to use the application's function to
+ * override this callback.
+ */
+const char *tep_plugin_kvm_get_func(struct tep_event *event,
+				    struct tep_record *record,
+				    unsigned long long *paddr);
+
+/*
+ * tep_plugin_kvm_put_func() is another weak function that can be used
+ * to call back into the application if the function name returned by
+ * tep_plugin_kvm_get_func() needs to be freed.
+ */
+void tep_plugin_kvm_put_func(const char *func);
+
+/* DEPRECATED */
+void tep_print_field(struct trace_seq *s, void *data,
+		     struct tep_format_field *field);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _PARSE_EVENTS_H */
diff --git a/include/traceevent/event-utils.h b/include/traceevent/event-utils.h
new file mode 100644
index 0000000..44f7968
--- /dev/null
+++ b/include/traceevent/event-utils.h
@@ -0,0 +1,80 @@
+/* SPDX-License-Identifier: LGPL-2.1 */
+/*
+ * Copyright (C) 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
+ *
+ */
+#ifndef __TEP_EVENT_UTIL_H
+#define __TEP_EVENT_UTIL_H
+
+#include <ctype.h>
+#include <stdarg.h>
+#include <stdbool.h>
+
+#include "event-parse.h"
+
+void tep_warning(const char *fmt, ...);
+void tep_info(const char *fmt, ...);
+
+/* Can be overridden */
+int tep_vprint(const char *name, enum tep_loglevel level,
+	       bool print_err, const char *fmt, va_list ap);
+
+/* The actual call of tep_vprint() for overrides to use */
+int __tep_vprint(const char *name, enum tep_loglevel level,
+		 bool print_err, const char *fmt, va_list ap);
+
+
+#define __deprecated(msg) __attribute__((deprecated("msg")))
+
+/* For backward compatibilty, do not use */
+int tep_vwarning(const char *name, const char *fmt, va_list ap) __deprecated(Use tep_vprint instead);
+void pr_stat(const char *fmt, ...) __deprecated(Use tep_info instead);
+void vpr_stat(const char *fmt, va_list ap) __deprecated(Use tep_vprint instead);
+void __pr_stat(const char *fmt, ...) __deprecated(Use tep_info instead);;
+void __vpr_stat(const char *fmt, va_list ap) __deprecated(Use tep_vprint instead);;
+
+#define min(x, y) ({				\
+	typeof(x) _min1 = (x);			\
+	typeof(y) _min2 = (y);			\
+	(void) (&_min1 == &_min2);		\
+	_min1 < _min2 ? _min1 : _min2; })
+
+static inline char *strim(char *string)
+{
+	char *ret;
+
+	if (!string)
+		return NULL;
+	while (*string) {
+		if (!isspace(*string))
+			break;
+		string++;
+	}
+	ret = string;
+
+	string = ret + strlen(ret) - 1;
+	while (string > ret) {
+		if (!isspace(*string))
+			break;
+		string--;
+	}
+	string[1] = 0;
+
+	return ret;
+}
+
+static inline int has_text(const char *text)
+{
+	if (!text)
+		return 0;
+
+	while (*text) {
+		if (!isspace(*text))
+			return 1;
+		text++;
+	}
+
+	return 0;
+}
+
+#endif
diff --git a/include/traceevent/kbuffer.h b/include/traceevent/kbuffer.h
new file mode 100644
index 0000000..ca638bc
--- /dev/null
+++ b/include/traceevent/kbuffer.h
@@ -0,0 +1,70 @@
+/* SPDX-License-Identifier: LGPL-2.1 */
+/*
+ * Copyright (C) 2012 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
+ *
+ */
+#ifndef _KBUFFER_H
+#define _KBUFFER_H
+
+#ifndef TS_SHIFT
+#define TS_SHIFT		27
+#endif
+
+enum kbuffer_endian {
+	KBUFFER_ENDIAN_BIG,
+	KBUFFER_ENDIAN_LITTLE,
+	KBUFFER_ENDIAN_SAME_AS_HOST,
+};
+
+enum kbuffer_long_size {
+	KBUFFER_LSIZE_4,
+	KBUFFER_LSIZE_8,
+	KBUFFER_LSIZE_SAME_AS_HOST,
+};
+
+enum {
+	KBUFFER_TYPE_PADDING		= 29,
+	KBUFFER_TYPE_TIME_EXTEND	= 30,
+	KBUFFER_TYPE_TIME_STAMP		= 31,
+};
+
+struct kbuffer;
+
+struct kbuffer *kbuffer_alloc(enum kbuffer_long_size size, enum kbuffer_endian endian);
+void kbuffer_free(struct kbuffer *kbuf);
+int kbuffer_load_subbuffer(struct kbuffer *kbuf, void *subbuffer);
+void *kbuffer_read_event(struct kbuffer *kbuf, unsigned long long *ts);
+void *kbuffer_next_event(struct kbuffer *kbuf, unsigned long long *ts);
+unsigned long long kbuffer_timestamp(struct kbuffer *kbuf);
+unsigned long long kbuffer_subbuf_timestamp(struct kbuffer *kbuf, void *subbuf);
+unsigned int kbuffer_ptr_delta(struct kbuffer *kbuf, void *ptr);
+
+void *kbuffer_translate_data(int swap, void *data, unsigned int *size);
+
+void *kbuffer_read_at_offset(struct kbuffer *kbuf, int offset, unsigned long long *ts);
+
+int kbuffer_curr_index(struct kbuffer *kbuf);
+
+int kbuffer_curr_offset(struct kbuffer *kbuf);
+int kbuffer_curr_size(struct kbuffer *kbuf);
+int kbuffer_event_size(struct kbuffer *kbuf);
+int kbuffer_missed_events(struct kbuffer *kbuf);
+int kbuffer_subbuffer_size(struct kbuffer *kbuf);
+
+void kbuffer_set_old_format(struct kbuffer *kbuf);
+int kbuffer_start_of_data(struct kbuffer *kbuf);
+
+/* Debugging */
+
+struct kbuffer_raw_info {
+	int			type;
+	int			length;
+	unsigned long long	delta;
+	void			*next;
+};
+
+/* Read raw data */
+struct kbuffer_raw_info *kbuffer_raw_get(struct kbuffer *kbuf, void *subbuf,
+					 struct kbuffer_raw_info *info);
+
+#endif /* _K_BUFFER_H */
diff --git a/include/traceevent/trace-seq.h b/include/traceevent/trace-seq.h
new file mode 100644
index 0000000..217492f
--- /dev/null
+++ b/include/traceevent/trace-seq.h
@@ -0,0 +1,63 @@
+// SPDX-License-Identifier: LGPL-2.1
+/*
+ * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
+ *
+ */
+
+#ifndef _TRACE_SEQ_H
+#define _TRACE_SEQ_H
+
+#include <stdarg.h>
+#include <stdio.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* ----------------------- trace_seq ----------------------- */
+
+#ifndef TRACE_SEQ_BUF_SIZE
+#define TRACE_SEQ_BUF_SIZE 4096
+#endif
+
+enum trace_seq_fail {
+	TRACE_SEQ__GOOD,
+	TRACE_SEQ__BUFFER_POISONED,
+	TRACE_SEQ__MEM_ALLOC_FAILED,
+};
+
+/*
+ * Trace sequences are used to allow a function to call several other functions
+ * to create a string of data to use (up to a max of PAGE_SIZE).
+ */
+
+struct trace_seq {
+	char			*buffer;
+	unsigned int		buffer_size;
+	unsigned int		len;
+	unsigned int		readpos;
+	enum trace_seq_fail	state;
+};
+
+void trace_seq_init(struct trace_seq *s);
+void trace_seq_reset(struct trace_seq *s);
+void trace_seq_destroy(struct trace_seq *s);
+
+extern int trace_seq_printf(struct trace_seq *s, const char *fmt, ...)
+	__attribute__ ((format (printf, 2, 3)));
+extern int trace_seq_vprintf(struct trace_seq *s, const char *fmt, va_list args)
+	__attribute__ ((format (printf, 2, 0)));
+
+extern int trace_seq_puts(struct trace_seq *s, const char *str);
+extern int trace_seq_putc(struct trace_seq *s, unsigned char c);
+
+extern void trace_seq_terminate(struct trace_seq *s);
+
+extern int trace_seq_do_fprintf(struct trace_seq *s, FILE *fp);
+extern int trace_seq_do_printf(struct trace_seq *s);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _TRACE_SEQ_H */