trace_events.c File Reference

#include <linux/workqueue.h>
#include <linux/spinlock.h>
#include <linux/kthread.h>
#include <linux/debugfs.h>
#include <linux/uaccess.h>
#include <linux/module.h>
#include <linux/ctype.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <asm/setup.h>
#include "trace_output.h"

Go to the source code of this file.

Macros
#define	TRACE_SYSTEM   "TRACE_SYSTEM"
#define	__common_field(type, item)
#define	EVENT_BUF_SIZE   127
#define	for_each_event(event, start, end)

Enumerations
enum	{ FORMAT_HEADER = 1, FORMAT_FIELD_SEPERATOR = 2, FORMAT_PRINTFMT = 3 }

Functions
	DEFINE_MUTEX (event_mutex)
	DEFINE_MUTEX (event_storage_mutex)
	EXPORT_SYMBOL_GPL (event_storage_mutex)
	EXPORT_SYMBOL_GPL (event_storage)
	LIST_HEAD (ftrace_events)
	LIST_HEAD (ftrace_common_fields)
struct list_head *	trace_get_fields (struct ftrace_event_call *event_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)
	EXPORT_SYMBOL_GPL (trace_define_field)
void	trace_destroy_fields (struct ftrace_event_call *call)
int	trace_event_raw_init (struct ftrace_event_call *call)
	EXPORT_SYMBOL_GPL (trace_event_raw_init)
int	ftrace_event_reg (struct ftrace_event_call *call, enum trace_reg type, void *data)
	EXPORT_SYMBOL_GPL (ftrace_event_reg)
void	trace_event_enable_cmd_record (bool enable)
int	trace_set_clr_event (const char *system, const char *event, int set)
	EXPORT_SYMBOL_GPL (trace_set_clr_event)
int	trace_add_event_call (struct ftrace_event_call *call)
void	trace_remove_event_call (struct ftrace_event_call *call)
	__setup ("trace_event=", setup_trace_event)
	core_initcall (event_trace_enable)
	fs_initcall (event_trace_init)

Variables
char	event_storage [EVENT_STORAGE_SIZE]
struct ftrace_event_call *	__start_ftrace_events []
struct ftrace_event_call *	__stop_ftrace_events []

Macro Definition Documentation

#define __common_field	(		type,
			item
	)

Value:

ret = __trace_define_field(&ftrace_common_fields, #type,    \
                   "common_" #item,         \
                   offsetof(typeof(ent), item),     \
                   sizeof(ent.item),            \
                   is_signed_type(type), FILTER_OTHER); \
    if (ret)                            \
        return ret;

Definition at line 101 of file trace_events.c.

#define EVENT_BUF_SIZE   127

Definition at line 370 of file trace_events.c.

#define for_each_event	(		event,
			start,
			end
	)

Value:

for (event = start;                 \
         (unsigned long)event < (unsigned long)end;     \
	     event++)

Definition at line 1307 of file trace_events.c.

#define TRACE_SYSTEM   "TRACE_SYSTEM"

Definition at line 26 of file trace_events.c.

Enumeration Type Documentation

anonymous enum

Enumerator:

FORMAT_HEADER
FORMAT_FIELD_SEPERATOR
FORMAT_PRINTFMT

Definition at line 636 of file trace_events.c.

Function Documentation

__setup

(

)

core_initcall

(

event_trace_enable

)

DEFINE_MUTEX

(

event_mutex

)

DEFINE_MUTEX

(

event_storage_mutex

)

EXPORT_SYMBOL_GPL

(

event_storage_mutex

)

EXPORT_SYMBOL_GPL

(

event_storage

)

EXPORT_SYMBOL_GPL

(

trace_define_field

)

EXPORT_SYMBOL_GPL

(

trace_event_raw_init

)

EXPORT_SYMBOL_GPL

(

ftrace_event_reg

)

EXPORT_SYMBOL_GPL

(

trace_set_clr_event

)

fs_initcall

(

event_trace_init

)

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

Definition at line 150 of file trace_events.c.

LIST_HEAD

(

ftrace_events

)

LIST_HEAD

(

ftrace_common_fields

)

int trace_add_event_call

(

struct ftrace_event_call *

call

)

Definition at line 1254 of file trace_events.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.

void trace_destroy_fields

(

struct ftrace_event_call *

call

)

Definition at line 124 of file trace_events.c.

void trace_event_enable_cmd_record

(

bool

enable

)

Definition at line 185 of file trace_events.c.

int trace_event_raw_init

(

struct ftrace_event_call *

call

)

Definition at line 138 of file trace_events.c.

struct list_head* trace_get_fields ( struct ftrace_event_call *  event_call )

read

Definition at line 40 of file trace_events.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.

Variable Documentation

struct ftrace_event_call* __start_ftrace_events[]

struct ftrace_event_call* __stop_ftrace_events[]

char event_storage[EVENT_STORAGE_SIZE]

Definition at line 33 of file trace_events.c.