summaryrefslogtreecommitdiffstats
path: root/include
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--include/asm/bug.h46
-rw-r--r--include/linux/compiler-gcc.h56
-rw-r--r--include/linux/compiler.h206
-rw-r--r--include/linux/time64.h13
-rw-r--r--include/traceevent/event-parse.h823
-rw-r--r--include/traceevent/event-utils.h80
-rw-r--r--include/traceevent/kbuffer.h70
-rw-r--r--include/traceevent/trace-seq.h63
8 files changed, 1357 insertions, 0 deletions
diff --git a/include/asm/bug.h b/include/asm/bug.h
new file mode 100644
index 0000000..de8f8fe
--- /dev/null
+++ b/include/asm/bug.h
@@ -0,0 +1,46 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _TOOLS_ASM_BUG_H
+#define _TOOLS_ASM_BUG_H
+
+#include <linux/compiler.h>
+#include <stdio.h>
+
+#define __WARN_printf(arg...) do { fprintf(stderr, arg); fprintf(stderr, "\n");} while (0)
+
+#define WARN(condition, format...) ({ \
+ int __ret_warn_on = !!(condition); \
+ if (unlikely(__ret_warn_on)) \
+ __WARN_printf(format); \
+ unlikely(__ret_warn_on); \
+})
+
+#define WARN_ON(condition) ({ \
+ int __ret_warn_on = !!(condition); \
+ if (unlikely(__ret_warn_on)) \
+ __WARN_printf("assertion failed at %s:%d\n", \
+ __FILE__, __LINE__); \
+ unlikely(__ret_warn_on); \
+})
+
+#define WARN_ON_ONCE(condition) ({ \
+ static int __warned; \
+ int __ret_warn_once = !!(condition); \
+ \
+ if (unlikely(__ret_warn_once && !__warned)) { \
+ __warned = true; \
+ WARN_ON(1); \
+ } \
+ unlikely(__ret_warn_once); \
+})
+
+#define WARN_ONCE(condition, format...) ({ \
+ static int __warned; \
+ int __ret_warn_once = !!(condition); \
+ \
+ if (unlikely(__ret_warn_once)) \
+ if (WARN(!__warned, format)) \
+ __warned = 1; \
+ unlikely(__ret_warn_once); \
+})
+
+#endif /* _TOOLS_ASM_BUG_H */
diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h
new file mode 100644
index 0000000..b9d4322
--- /dev/null
+++ b/include/linux/compiler-gcc.h
@@ -0,0 +1,56 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _TOOLS_LINUX_COMPILER_H_
+#error "Please don't include <linux/compiler-gcc.h> directly, include <linux/compiler.h> instead."
+#endif
+
+/*
+ * Common definitions for all gcc versions go here.
+ */
+#ifndef GCC_VERSION
+#define GCC_VERSION (__GNUC__ * 10000 \
+ + __GNUC_MINOR__ * 100 \
+ + __GNUC_PATCHLEVEL__)
+#endif
+
+#if GCC_VERSION >= 70000 && !defined(__CHECKER__)
+# define __fallthrough __attribute__ ((fallthrough))
+#endif
+
+#if GCC_VERSION >= 40300
+# define __compiletime_error(message) __attribute__((error(message)))
+#endif /* GCC_VERSION >= 40300 */
+
+/* &a[0] degrades to a pointer: a different type from an array */
+#define __must_be_array(a) BUILD_BUG_ON_ZERO(__same_type((a), &(a)[0]))
+
+#ifndef __pure
+#define __pure __attribute__((pure))
+#endif
+#define noinline __attribute__((noinline))
+#ifdef __has_attribute
+#if __has_attribute(disable_tail_calls)
+#define __no_tail_call __attribute__((disable_tail_calls))
+#endif
+#endif
+#ifndef __no_tail_call
+#if GCC_VERSION > 40201
+#define __no_tail_call __attribute__((optimize("no-optimize-sibling-calls")))
+#else
+#define __no_tail_call
+#endif
+#endif
+#ifndef __packed
+#define __packed __attribute__((packed))
+#endif
+#ifndef __noreturn
+#define __noreturn __attribute__((noreturn))
+#endif
+#ifndef __aligned
+#define __aligned(x) __attribute__((aligned(x)))
+#endif
+#define __printf(a, b) __attribute__((format(printf, a, b)))
+#define __scanf(a, b) __attribute__((format(scanf, a, b)))
+
+#if GCC_VERSION >= 50100
+#define COMPILER_HAS_GENERIC_BUILTIN_OVERFLOW 1
+#endif
diff --git a/include/linux/compiler.h b/include/linux/compiler.h
new file mode 100644
index 0000000..2b3f735
--- /dev/null
+++ b/include/linux/compiler.h
@@ -0,0 +1,206 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _TOOLS_LINUX_COMPILER_H_
+#define _TOOLS_LINUX_COMPILER_H_
+
+#ifdef __GNUC__
+#include <linux/compiler-gcc.h>
+#endif
+
+#ifndef __compiletime_error
+# define __compiletime_error(message)
+#endif
+
+#ifdef __OPTIMIZE__
+# define __compiletime_assert(condition, msg, prefix, suffix) \
+ do { \
+ extern void prefix ## suffix(void) __compiletime_error(msg); \
+ if (!(condition)) \
+ prefix ## suffix(); \
+ } while (0)
+#else
+# define __compiletime_assert(condition, msg, prefix, suffix) do { } while (0)
+#endif
+
+#define _compiletime_assert(condition, msg, prefix, suffix) \
+ __compiletime_assert(condition, msg, prefix, suffix)
+
+/**
+ * compiletime_assert - break build and emit msg if condition is false
+ * @condition: a compile-time constant condition to check
+ * @msg: a message to emit if condition is false
+ *
+ * In tradition of POSIX assert, this macro will break the build if the
+ * supplied condition is *false*, emitting the supplied error message if the
+ * compiler has support to do so.
+ */
+#define compiletime_assert(condition, msg) \
+ _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
+
+/* Optimization barrier */
+/* The "volatile" is due to gcc bugs */
+#define barrier() __asm__ __volatile__("": : :"memory")
+
+#ifndef __always_inline
+# define __always_inline inline __attribute__((always_inline))
+#endif
+
+#ifndef noinline
+#define noinline
+#endif
+#ifndef __no_tail_call
+#define __no_tail_call
+#endif
+
+/* Are two types/vars the same type (ignoring qualifiers)? */
+#ifndef __same_type
+# define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b))
+#endif
+
+#ifdef __ANDROID__
+/*
+ * FIXME: Big hammer to get rid of tons of:
+ * "warning: always_inline function might not be inlinable"
+ *
+ * At least on android-ndk-r12/platforms/android-24/arch-arm
+ */
+#undef __always_inline
+#define __always_inline inline
+#endif
+
+#define __user
+#define __rcu
+#define __read_mostly
+
+#ifndef __attribute_const__
+# define __attribute_const__
+#endif
+
+#ifndef __maybe_unused
+# define __maybe_unused __attribute__((unused))
+#endif
+
+#ifndef __used
+# define __used __attribute__((__unused__))
+#endif
+
+#ifndef __packed
+# define __packed __attribute__((__packed__))
+#endif
+
+#ifndef __force
+# define __force
+#endif
+
+#ifndef __weak
+# define __weak __attribute__((weak))
+#endif
+
+#ifndef likely
+# define likely(x) __builtin_expect(!!(x), 1)
+#endif
+
+#ifndef unlikely
+# define unlikely(x) __builtin_expect(!!(x), 0)
+#endif
+
+#ifndef __init
+# define __init
+#endif
+
+#ifndef noinline
+# define noinline
+#endif
+
+#include <linux/types.h>
+
+/*
+ * Following functions are taken from kernel sources and
+ * break aliasing rules in their original form.
+ *
+ * While kernel is compiled with -fno-strict-aliasing,
+ * perf uses -Wstrict-aliasing=3 which makes build fail
+ * under gcc 4.4.
+ *
+ * Using extra __may_alias__ type to allow aliasing
+ * in this case.
+ */
+typedef __u8 __attribute__((__may_alias__)) __u8_alias_t;
+typedef __u16 __attribute__((__may_alias__)) __u16_alias_t;
+typedef __u32 __attribute__((__may_alias__)) __u32_alias_t;
+typedef __u64 __attribute__((__may_alias__)) __u64_alias_t;
+
+static __always_inline void __read_once_size(const volatile void *p, void *res, int size)
+{
+ switch (size) {
+ case 1: *(__u8_alias_t *) res = *(volatile __u8_alias_t *) p; break;
+ case 2: *(__u16_alias_t *) res = *(volatile __u16_alias_t *) p; break;
+ case 4: *(__u32_alias_t *) res = *(volatile __u32_alias_t *) p; break;
+ case 8: *(__u64_alias_t *) res = *(volatile __u64_alias_t *) p; break;
+ default:
+ barrier();
+ __builtin_memcpy((void *)res, (const void *)p, size);
+ barrier();
+ }
+}
+
+static __always_inline void __write_once_size(volatile void *p, void *res, int size)
+{
+ switch (size) {
+ case 1: *(volatile __u8_alias_t *) p = *(__u8_alias_t *) res; break;
+ case 2: *(volatile __u16_alias_t *) p = *(__u16_alias_t *) res; break;
+ case 4: *(volatile __u32_alias_t *) p = *(__u32_alias_t *) res; break;
+ case 8: *(volatile __u64_alias_t *) p = *(__u64_alias_t *) res; break;
+ default:
+ barrier();
+ __builtin_memcpy((void *)p, (const void *)res, size);
+ barrier();
+ }
+}
+
+/*
+ * Prevent the compiler from merging or refetching reads or writes. The
+ * compiler is also forbidden from reordering successive instances of
+ * READ_ONCE and WRITE_ONCE, but only when the compiler is aware of some
+ * particular ordering. One way to make the compiler aware of ordering is to
+ * put the two invocations of READ_ONCE or WRITE_ONCE in different C
+ * statements.
+ *
+ * These two macros will also work on aggregate data types like structs or
+ * unions. If the size of the accessed data type exceeds the word size of
+ * the machine (e.g., 32 bits or 64 bits) READ_ONCE() and WRITE_ONCE() will
+ * fall back to memcpy and print a compile-time warning.
+ *
+ * Their two major use cases are: (1) Mediating communication between
+ * process-level code and irq/NMI handlers, all running on the same CPU,
+ * and (2) Ensuring that the compiler does not fold, spindle, or otherwise
+ * mutilate accesses that either do not require ordering or that interact
+ * with an explicit memory barrier or atomic instruction that provides the
+ * required ordering.
+ */
+
+#define READ_ONCE(x) \
+({ \
+ union { typeof(x) __val; char __c[1]; } __u = \
+ { .__c = { 0 } }; \
+ __read_once_size(&(x), __u.__c, sizeof(x)); \
+ __u.__val; \
+})
+
+#define WRITE_ONCE(x, val) \
+({ \
+ union { typeof(x) __val; char __c[1]; } __u = \
+ { .__val = (val) }; \
+ __write_once_size(&(x), __u.__c, sizeof(x)); \
+ __u.__val; \
+})
+
+
+#ifndef __fallthrough
+# define __fallthrough
+#endif
+
+/* Indirect macros required for expanded argument pasting, eg. __LINE__. */
+#define ___PASTE(a, b) a##b
+#define __PASTE(a, b) ___PASTE(a, b)
+
+#endif /* _TOOLS_LINUX_COMPILER_H */
diff --git a/include/linux/time64.h b/include/linux/time64.h
new file mode 100644
index 0000000..55fa644
--- /dev/null
+++ b/include/linux/time64.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _TOOLS_LINUX_TIME64_H
+#define _TOOLS_LINUX_TIME64_H
+
+#define MSEC_PER_SEC 1000L
+#define USEC_PER_MSEC 1000L
+#define NSEC_PER_USEC 1000L
+#define NSEC_PER_MSEC 1000000L
+#define USEC_PER_SEC 1000000L
+#define NSEC_PER_SEC 1000000000L
+#define FSEC_PER_SEC 1000000000000000LL
+
+#endif /* _LINUX_TIME64_H */
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 */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-18 17:02:17 +0000