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/*
* Copyright (C) ST-Ericsson SA 2009-2010
*
* Author: Jonas Aaberg <jonas.aberg@stericsson.com> for ST-Ericsson
*
* License terms: GNU General Public License (GPL) version 2
*
* boottime is a tool for collecting start-up timing
* information and can together with boot loader support
* display a total system start-up time.
*
*/
#ifndef LINUX_BOOTTIME_H
#define LINUX_BOOTTIME_H
#ifdef CONFIG_BOOTTIME
#include <linux/kernel.h>
/**
* struct boottime_timer - Callbacks for generic timer.
* @init: Function to call at boottime initialization
* @get_time: Returns the number of us since start-up
* Preferable this is based upon a free running timer.
* This is the only required entry.
* @finalize: Called before init is executed and boottime is done.
*/
struct boottime_timer {
int (*init)(void);
unsigned long (*get_time)(void);
void (*finalize)(void);
};
/**
* boottime_mark_wtime()
* Add a sample point with a given time. Useful for adding data collected
* by for example a boot loader.
* @name: The name of the sample point
* @time: The time in us when this point was reached
*/
void __init boottime_mark_wtime(char *name, unsigned long time);
/**
* boottime_mark()
* Add a sample point with the current time.
* @name: The name of this sample point
*/
void __init boottime_mark(char *name);
/**
* boottime_mark_symbolic()
* Add a sample point where the name is a symbolic function
* and %pF is needed to get the correct function name.
* @name: function name.
*/
void __init boottime_mark_symbolic(void *name);
/**
* boottime_activate()
* Activates boottime and register callbacks.
* @bt: struct with callbacks.
*/
void __ref boottime_activate(struct boottime_timer *bt);
/**
* boottime_deactivate()
* This function is called when the kernel boot is done.
* (before "free init memory" is called)
*/
void __init boottime_deactivate(void);
/**
* boottime_system_up()
* A function is called when the basics of the kernel
* is up and running.
*/
void __init boottime_system_up(void);
#else
#define boottime_mark_wtime(name, time)
#define boottime_mark(name)
#define boottime_mark_symbolic(name)
#define boottime_activate(bt)
#define boottime_deactivate()
#define boottime_system_up()
#endif
#endif /* LINUX_BOOTTIME_H */
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