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/*

 *  include/asm-s390/timex.h

 *

 *  S390 version

 *    Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation

 *

 *  Derived from "include/asm-i386/timex.h"

 *    Copyright (C) 1992, Linus Torvalds

 */

#ifndef _ASM_S390_TIMEX_H

#define _ASM_S390_TIMEX_H

#define CLOCK_TICK_RATE 1193180 /* Underlying HZ */

#define CLOCK_TICK_FACTOR       20      /* Factor of both 1000000 and CLOCK_TICK_RATE */

#define FINETUNE ((((((long)LATCH * HZ - CLOCK_TICK_RATE) << SHIFT_HZ) * \

        (1000000/CLOCK_TICK_FACTOR) / (CLOCK_TICK_RATE/CLOCK_TICK_FACTOR)) \

                << (SHIFT_SCALE-SHIFT_HZ)) / HZ)

typedef unsigned long long cycles_t;

extern cycles_t cacheflush_time;

static inline cycles_t get_cycles(void)

{

        cycles_t cycles;

        __asm__("stck 0(%0)" : : "a" (&(cycles)) : "memory", "cc");

        return cycles >> 2;

}

static inline unsigned long long get_clock (void)

{

        unsigned long long clock;

        __asm__("stck 0(%0)" : : "a" (&(clock)) : "memory", "cc");

        return clock;

}

#define vxtime_lock()           do {} while (0)

#define vxtime_unlock()         do {} while (0)

#endif