[lttng-modules.git] / ltt-tracer.h

#ifndef _LTT_TRACER_H
#define _LTT_TRACER_H

/*
 * ltt-tracer.h
 *
 * Copyright (C) 2005-2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 *
 * This contains the definitions for the Linux Trace Toolkit tracer.
 *
 * Dual LGPL v2.1/GPL v2 license.
 */

#include <stdarg.h>
#include <linux/types.h>
#include <linux/limits.h>
#include <linux/list.h>
#include <linux/cache.h>
#include <linux/timex.h>
#include <linux/wait.h>
#include <asm/atomic.h>
#include <asm/local.h>

#include "wrapper/trace-clock.h"
#include "ltt-tracer-core.h"
#include "ltt-events.h"

#define LTTNG_VERSION 0
#define LTTNG_PATCHLEVEL 9
#define LTTNG_SUBLEVEL 1

#ifndef CHAR_BIT
#define CHAR_BIT 8
#endif

/* Number of bytes to log with a read/write event */
#define LTT_LOG_RW_SIZE			32L
#define LTT_MAX_SMALL_SIZE		0xFFFFU

#ifdef RING_BUFFER_ALIGN
#define ltt_alignof(type)	__alignof__(type)
#else
#define ltt_alignof(type)	1
#endif

/* Tracer properties */
#define CTF_MAGIC_NUMBER		0xC1FC1FC1
#define TSDL_MAGIC_NUMBER		0x75D11D57
#define CTF_VERSION_MAJOR		0
#define CTF_VERSION_MINOR		1

/*
 * Number of milliseconds to retry before failing metadata writes on buffer full
 * condition. (10 seconds)
 */
#define LTTNG_METADATA_TIMEOUT_MSEC	10000

#define LTT_RFLAG_EXTENDED		RING_BUFFER_RFLAG_END
#define LTT_RFLAG_END			(LTT_RFLAG_EXTENDED << 1)

/* Register and unregister function pointers */

enum ltt_module_function {
	LTT_FUNCTION_RUN_FILTER,
	LTT_FUNCTION_FILTER_CONTROL,
	LTT_FUNCTION_STATEDUMP
};

extern int ltt_module_register(enum ltt_module_function name, void *function,
			       struct module *owner);
extern void ltt_module_unregister(enum ltt_module_function name);

/* Exported control function */

void ltt_core_register(int (*function)(u8, void *));

void ltt_core_unregister(void);

extern
void ltt_statedump_register_kprobes_dump(void (*callback)(void *call_data));
extern
void ltt_statedump_unregister_kprobes_dump(void (*callback)(void *call_data));

extern void ltt_dump_softirq_vec(void *call_data);

#ifdef CONFIG_HAVE_LTT_DUMP_TABLES
extern void ltt_dump_sys_call_table(void *call_data);
extern void ltt_dump_idt_table(void *call_data);
#else
static inline void ltt_dump_sys_call_table(void *call_data)
{
}

static inline void ltt_dump_idt_table(void *call_data)
{
}
#endif

#endif /* _LTT_TRACER_H */
Commit	Line	Data
	1	#ifndef _LTT_TRACER_H
	2	#define _LTT_TRACER_H
	3
	4	/*
	5	* ltt-tracer.h
	6	*
	7	* Copyright (C) 2005-2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	8	*
	9	* This contains the definitions for the Linux Trace Toolkit tracer.
	10	*
	11	* Dual LGPL v2.1/GPL v2 license.
	12	*/
	13
	14	#include <stdarg.h>
	15	#include <linux/types.h>
	16	#include <linux/limits.h>
	17	#include <linux/list.h>
	18	#include <linux/cache.h>
	19	#include <linux/timex.h>
	20	#include <linux/wait.h>
	21	#include <asm/atomic.h>
	22	#include <asm/local.h>
	23
	24	#include "wrapper/trace-clock.h"
	25	#include "ltt-tracer-core.h"
	26	#include "ltt-events.h"
	27
	28	#define LTTNG_VERSION 0
	29	#define LTTNG_PATCHLEVEL 9
	30	#define LTTNG_SUBLEVEL 1
	31
	32	#ifndef CHAR_BIT
	33	#define CHAR_BIT 8
	34	#endif
	35
	36	/* Number of bytes to log with a read/write event */
	37	#define LTT_LOG_RW_SIZE 32L
	38	#define LTT_MAX_SMALL_SIZE 0xFFFFU
	39
	40	#ifdef RING_BUFFER_ALIGN
	41	#define ltt_alignof(type) __alignof__(type)
	42	#else
	43	#define ltt_alignof(type) 1
	44	#endif
	45
	46	/* Tracer properties */
	47	#define CTF_MAGIC_NUMBER 0xC1FC1FC1
	48	#define TSDL_MAGIC_NUMBER 0x75D11D57
	49	#define CTF_VERSION_MAJOR 0
	50	#define CTF_VERSION_MINOR 1
	51
	52	/*
	53	* Number of milliseconds to retry before failing metadata writes on buffer full
	54	* condition. (10 seconds)
	55	*/
	56	#define LTTNG_METADATA_TIMEOUT_MSEC 10000
	57
	58	#define LTT_RFLAG_EXTENDED RING_BUFFER_RFLAG_END
	59	#define LTT_RFLAG_END (LTT_RFLAG_EXTENDED << 1)
	60
	61	/* Register and unregister function pointers */
	62
	63	enum ltt_module_function {
	64	LTT_FUNCTION_RUN_FILTER,
	65	LTT_FUNCTION_FILTER_CONTROL,
	66	LTT_FUNCTION_STATEDUMP
	67	};
	68
	69	extern int ltt_module_register(enum ltt_module_function name, void *function,
	70	struct module *owner);
	71	extern void ltt_module_unregister(enum ltt_module_function name);
	72
	73	/* Exported control function */
	74
	75	void ltt_core_register(int (function)(u8, void ));
	76
	77	void ltt_core_unregister(void);
	78
	79	extern
	80	void ltt_statedump_register_kprobes_dump(void (callback)(void call_data));
	81	extern
	82	void ltt_statedump_unregister_kprobes_dump(void (callback)(void call_data));
	83
	84	extern void ltt_dump_softirq_vec(void *call_data);
	85
	86	#ifdef CONFIG_HAVE_LTT_DUMP_TABLES
	87	extern void ltt_dump_sys_call_table(void *call_data);
	88	extern void ltt_dump_idt_table(void *call_data);
	89	#else
	90	static inline void ltt_dump_sys_call_table(void *call_data)
	91	{
	92	}
	93
	94	static inline void ltt_dump_idt_table(void *call_data)
	95	{
	96	}
	97	#endif
	98
	99	#endif /* _LTT_TRACER_H */