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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 clk;
__asm__("stck 0(%0)" : : "a" (&(clk)) : "memory", "cc");
return clk;
}
#define vxtime_lock() do {} while (0)
#define vxtime_unlock() do {} while (0)
#endif
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