#include <linux/ring_buffer.h>
#include <linux/trace_seq.h>
#include <linux/percpu.h>
#include <linux/hardirq.h>
#include <linux/perf_event.h>

Go to the source code of this file.

Data Structures
struct	trace_print_flags

struct	trace_print_flags_u64

struct	trace_entry

struct	trace_iterator

struct	trace_event_functions

struct	trace_event

struct	ftrace_event_class

struct	ftrace_event_call

Macros
#define	FTRACE_MAX_EVENT ((1 << (sizeof(((struct trace_entry )0)->type) 8)) - 1)

#define	__TRACE_EVENT_FLAGS(name, value)

#define	PERF_MAX_TRACE_SIZE 2048

#define	MAX_FILTER_STR_VAL 256 /* Should handle KSYM_SYMBOL_LEN */

#define	EVENT_STORAGE_SIZE 128

#define	is_signed_type(type) (((type)(-1)) < 0)

#define	event_trace_printk(ip, fmt, args...)

Typedefs
typedef enum print_line_t(*	trace_print_func )(struct trace_iterator iter, int flags, struct trace_event event)

Enumerations
enum	print_line_t { TRACE_TYPE_PARTIAL_LINE = 0, TRACE_TYPE_HANDLED = 1, TRACE_TYPE_UNHANDLED = 2, TRACE_TYPE_NO_CONSUME = 3 }

enum	trace_reg { TRACE_REG_REGISTER, TRACE_REG_UNREGISTER }

enum	{ TRACE_EVENT_FL_ENABLED_BIT, TRACE_EVENT_FL_FILTERED_BIT, TRACE_EVENT_FL_RECORDED_CMD_BIT, TRACE_EVENT_FL_CAP_ANY_BIT, TRACE_EVENT_FL_NO_SET_FILTER_BIT, TRACE_EVENT_FL_IGNORE_ENABLE_BIT }

enum	{ TRACE_EVENT_FL_ENABLED = (1 << TRACE_EVENT_FL_ENABLED_BIT), TRACE_EVENT_FL_FILTERED = (1 << TRACE_EVENT_FL_FILTERED_BIT), TRACE_EVENT_FL_RECORDED_CMD = (1 << TRACE_EVENT_FL_RECORDED_CMD_BIT), TRACE_EVENT_FL_CAP_ANY = (1 << TRACE_EVENT_FL_CAP_ANY_BIT), TRACE_EVENT_FL_NO_SET_FILTER = (1 << TRACE_EVENT_FL_NO_SET_FILTER_BIT), TRACE_EVENT_FL_IGNORE_ENABLE = (1 << TRACE_EVENT_FL_IGNORE_ENABLE_BIT) }

enum	{ FILTER_OTHER = 0, FILTER_STATIC_STRING, FILTER_DYN_STRING, FILTER_PTR_STRING, FILTER_TRACE_FN }

Functions
const char *	ftrace_print_flags_seq (struct trace_seq p, const char delim, unsigned long flags, const struct trace_print_flags *flag_array)

const char *	ftrace_print_symbols_seq (struct trace_seq p, unsigned long val, const struct trace_print_flags symbol_array)

const char *	ftrace_print_hex_seq (struct trace_seq p, const unsigned char buf, int len)

int	register_ftrace_event (struct trace_event *event)

int	unregister_ftrace_event (struct trace_event *event)

void	tracing_generic_entry_update (struct trace_entry *entry, unsigned long flags, int pc)

struct ring_buffer_event *	trace_current_buffer_lock_reserve (struct ring_buffer **current_buffer, int type, unsigned long len, unsigned long flags, int pc)

void	trace_current_buffer_unlock_commit (struct ring_buffer buffer, struct ring_buffer_event event, unsigned long flags, int pc)

void	trace_nowake_buffer_unlock_commit (struct ring_buffer buffer, struct ring_buffer_event event, unsigned long flags, int pc)

void	trace_nowake_buffer_unlock_commit_regs (struct ring_buffer buffer, struct ring_buffer_event event, unsigned long flags, int pc, struct pt_regs *regs)

void	trace_current_buffer_discard_commit (struct ring_buffer buffer, struct ring_buffer_event event)

void	tracing_record_cmdline (struct task_struct *tsk)

int	ftrace_event_reg (struct ftrace_event_call event, enum trace_reg type, void data)

void	destroy_preds (struct ftrace_event_call *call)

int	filter_match_preds (struct event_filter filter, void rec)

int	filter_current_check_discard (struct ring_buffer buffer, struct ftrace_event_call call, void rec, struct ring_buffer_event event)

int	trace_event_raw_init (struct ftrace_event_call *call)

int	trace_define_field (struct ftrace_event_call call, const char type, const char *name, int offset, int size, int is_signed, int filter_type)

int	trace_add_event_call (struct ftrace_event_call *call)

void	trace_remove_event_call (struct ftrace_event_call *call)

int	trace_set_clr_event (const char system, const char event, int set)

Variables
struct mutex	event_storage_mutex

char	event_storage [EVENT_STORAGE_SIZE]

Macro Definition Documentation

#define __TRACE_EVENT_FLAGS	(	name,
		value
	)

Value:

static int __init trace_init_flags_##name(void)         \
    {                               \
        event_##name.flags = value;             \
        return 0;                       \
    }                               \
    early_initcall(trace_init_flags_##name);

Definition at line 231 of file ftrace_event.h.

#define EVENT_STORAGE_SIZE 128

Definition at line 258 of file ftrace_event.h.

#define event_trace_printk	(	ip,
		fmt,
		args...
	)

Value:

do {                                    \
    __trace_printk_check_format(fmt, ##args);           \
    tracing_record_cmdline(current);                \
    if (__builtin_constant_p(fmt)) {                \
        static const char *trace_printk_fmt			\
		  __attribute__((section("__trace_printk_fmt"))) =    \
            __builtin_constant_p(fmt) ? fmt : NULL;     \
									\
		__trace_bprintk(ip, trace_printk_fmt, ##args);        \
    } else								\
		__trace_printk(ip, fmt, ##args);          \
} while (0)

Definition at line 278 of file ftrace_event.h.

#define FTRACE_MAX_EVENT ((1 << (sizeof(((struct trace_entry *)0)->type) * 8)) - 1)

Definition at line 55 of file ftrace_event.h.

#define is_signed_type ( type ) (((type)(-1)) < 0)

Definition at line 269 of file ftrace_event.h.

#define MAX_FILTER_STR_VAL 256 /* Should handle KSYM_SYMBOL_LEN */

Definition at line 241 of file ftrace_event.h.

#define PERF_MAX_TRACE_SIZE 2048

Definition at line 239 of file ftrace_event.h.

Typedef Documentation

typedef enum print_line_t(* trace_print_func)(struct trace_iterator *iter, int flags, struct trace_event *event)

Definition at line 92 of file ftrace_event.h.

Enumeration Type Documentation

anonymous enum

Enumerator:

TRACE_EVENT_FL_ENABLED_BIT
TRACE_EVENT_FL_FILTERED_BIT
TRACE_EVENT_FL_RECORDED_CMD_BIT
TRACE_EVENT_FL_CAP_ANY_BIT
TRACE_EVENT_FL_NO_SET_FILTER_BIT
TRACE_EVENT_FL_IGNORE_ENABLE_BIT

Definition at line 176 of file ftrace_event.h.

anonymous enum

Enumerator:

TRACE_EVENT_FL_ENABLED
TRACE_EVENT_FL_FILTERED
TRACE_EVENT_FL_RECORDED_CMD
TRACE_EVENT_FL_CAP_ANY
TRACE_EVENT_FL_NO_SET_FILTER
TRACE_EVENT_FL_IGNORE_ENABLE

Definition at line 185 of file ftrace_event.h.

anonymous enum

Enumerator:

FILTER_OTHER
FILTER_STATIC_STRING
FILTER_DYN_STRING
FILTER_PTR_STRING
FILTER_TRACE_FN

Definition at line 250 of file ftrace_event.h.

enum print_line_t

Enumerator:

TRACE_TYPE_PARTIAL_LINE
TRACE_TYPE_HANDLED
TRACE_TYPE_UNHANDLED
TRACE_TYPE_NO_CONSUME

Definition at line 113 of file ftrace_event.h.

enum trace_reg

Enumerator:

TRACE_REG_REGISTER
TRACE_REG_UNREGISTER

Definition at line 144 of file ftrace_event.h.

Function Documentation

void destroy_preds ( struct ftrace_event_call * call )

Definition at line 809 of file trace_events_filter.c.

int filter_current_check_discard	(	struct ring_buffer *	buffer,
		struct ftrace_event_call *	call,
		void *	rec,
		struct ring_buffer_event *	event
	)

Definition at line 165 of file trace.c.

int filter_match_preds	(	struct event_filter *	filter,
		void *	rec
	)

Definition at line 533 of file trace_events_filter.c.

int ftrace_event_reg	(	struct ftrace_event_call *	event,
		enum trace_reg	type,
		void *	data
	)

Definition at line 150 of file trace_events.c.

const char* ftrace_print_flags_seq	(	struct trace_seq *	p,
		const char *	delim,
		unsigned long	flags,
		const struct trace_print_flags *	flag_array
	)

Definition at line 296 of file trace_output.c.

const char* ftrace_print_hex_seq	(	struct trace_seq *	p,
		const unsigned char *	buf,
		int	len
	)

Definition at line 386 of file trace_output.c.

const char* ftrace_print_symbols_seq	(	struct trace_seq *	p,
		unsigned long	val,
		const struct trace_print_flags *	symbol_array
	)

Definition at line 334 of file trace_output.c.

int register_ftrace_event ( struct trace_event * event )

register_ftrace_event - register output for an event type : the event type to register

Event types are stored in a hash and this hash is used to find a way to print an event. If the ->type is set then it will use that type, otherwise it will assign a type to use.

If you assign your own type, please make sure it is added to the trace_type enum in trace.h, to avoid collisions with the dynamic types.

Returns the event type number or zero on error.

Definition at line 782 of file trace_output.c.

int trace_add_event_call ( struct ftrace_event_call * call )

Definition at line 1254 of file trace_events.c.

void trace_current_buffer_discard_commit	(	struct ring_buffer *	buffer,
		struct ring_buffer_event *	event
	)

Definition at line 1242 of file trace.c.

struct ring_buffer_event* trace_current_buffer_lock_reserve	(	struct ring_buffer **	current_buffer,
		int	type,
		unsigned long	len,
		unsigned long	flags,
		int	pc
	)

read

Definition at line 1204 of file trace.c.

void trace_current_buffer_unlock_commit	(	struct ring_buffer *	buffer,
		struct ring_buffer_event *	event,
		unsigned long	flags,
		int	pc
	)

Definition at line 1214 of file trace.c.

int trace_define_field	(	struct ftrace_event_call *	call,
		const char *	type,
		const char *	name,
		int	offset,
		int	size,
		int	is_signed,
		int	filter_type
	)

Definition at line 86 of file trace_events.c.

int trace_event_raw_init ( struct ftrace_event_call * call )

Definition at line 138 of file trace_events.c.

void trace_nowake_buffer_unlock_commit	(	struct ring_buffer *	buffer,
		struct ring_buffer_event *	event,
		unsigned long	flags,
		int	pc
	)

Definition at line 1222 of file trace.c.

void trace_nowake_buffer_unlock_commit_regs	(	struct ring_buffer *	buffer,
		struct ring_buffer_event *	event,
		unsigned long	flags,
		int	pc,
		struct pt_regs *	regs
	)

Definition at line 1230 of file trace.c.

void trace_remove_event_call ( struct ftrace_event_call * call )

Definition at line 1298 of file trace_events.c.

int trace_set_clr_event	(	const char *	system,
		const char *	event,
		int	set
	)

trace_set_clr_event - enable or disable an event : system name to match (NULL for any system) : event name to match (NULL for all events, within system) : 1 to enable, 0 to disable

This is a way for other parts of the kernel to enable or disable event recording.

Returns 0 on success, -EINVAL if the parameters do not match any registered events.

Definition at line 363 of file trace_events.c.

void tracing_generic_entry_update	(	struct trace_entry *	entry,
		unsigned long	flags,
		int	pc
	)

Definition at line 1142 of file trace.c.

void tracing_record_cmdline ( struct task_struct * tsk )

Definition at line 1132 of file trace.c.

int unregister_ftrace_event ( struct trace_event * event )

unregister_ftrace_event - remove a no longer used event : the event to remove

Definition at line 862 of file trace_output.c.

Variable Documentation

char event_storage[EVENT_STORAGE_SIZE]

Definition at line 33 of file trace_events.c.

struct mutex event_storage_mutex

Data Structures

Macros

Typedefs

Enumerations

Functions

Variables

Macro Definition Documentation

Typedef Documentation

Enumeration Type Documentation

Function Documentation

Variable Documentation