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/* -*- Mode:C; c-basic-offset:4; tab-width:4 -*-
****************************************************************************
* (C) 2002 - Rolf Neugebauer - Intel Research Cambridge
****************************************************************************
*
* File: time.h
* Author: Rolf Neugebauer (neugebar@dcs.gla.ac.uk)
* Changes:
*
* Date: Nov 2002
*
* Environment: Xen Hypervisor
* Description: Architecture dependent definition of time variables
*
****************************************************************************
* $Id: h-insert.h,v 1.4 2002/11/08 16:03:55 rn Exp $
****************************************************************************
*/
#ifndef _ASM_TIME_H_
#define _ASM_TIME_H_
#include <asm/types.h>
#include <asm/msr.h>
/*
* Cycle Counter Time
*/
typedef u64 cc_time_t;
static inline cc_time_t get_cc_time()
{
u64 ret;
rdtscll(ret);
return ret;
}
/*
* System Time
*/
typedef s64 s_time_t; /* System time */
extern u32 stime_pcc; /* cycle counter value at last timer irq */
extern s_time_t stime_now; /* time in ns at last timer IRQ */
/*
* Domain Virtual Time
*/
typedef u64 dv_time_t;
#endif /* _ASM_TIME_H_ */
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