2 * include/asm-s390/timex.h
5 * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
7 * Derived from "include/asm-i386/timex.h"
8 * Copyright (C) 1992, Linus Torvalds
11 #ifndef _ASM_S390_TIMEX_H
12 #define _ASM_S390_TIMEX_H
14 #define CLOCK_TICK_RATE 1193180 /* Underlying HZ */
16 typedef unsigned long long cycles_t;
18 static inline unsigned long long get_clock (void)
20 unsigned long long clk;
22 #if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ > 2)
23 asm volatile("stck %0" : "=Q" (clk) : : "cc");
25 asm volatile("stck 0(%1)" : "=m" (clk) : "a" (&clk) : "cc");
30 static inline cycles_t get_cycles(void)
32 return (cycles_t) get_clock() >> 2;