fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / asm-s390 / timex.h
blob98229db243141ba189a0f75927da5a351af7d992
1 /*
2 * include/asm-s390/timex.h
4 * S390 version
5 * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
7 * Derived from "include/asm-i386/timex.h"
8 * Copyright (C) 1992, Linus Torvalds
9 */
11 #ifndef _ASM_S390_TIMEX_H
12 #define _ASM_S390_TIMEX_H
14 /* Inline functions for clock register access. */
15 static inline int set_clock(__u64 time)
17 int cc;
19 asm volatile(
20 " sck 0(%2)\n"
21 " ipm %0\n"
22 " srl %0,28\n"
23 : "=d" (cc) : "m" (time), "a" (&time) : "cc");
24 return cc;
27 static inline int store_clock(__u64 *time)
29 int cc;
31 asm volatile(
32 " stck 0(%2)\n"
33 " ipm %0\n"
34 " srl %0,28\n"
35 : "=d" (cc), "=m" (*time) : "a" (time) : "cc");
36 return cc;
39 static inline void set_clock_comparator(__u64 time)
41 asm volatile("sckc 0(%1)" : : "m" (time), "a" (&time));
44 static inline void store_clock_comparator(__u64 *time)
46 asm volatile("stckc 0(%1)" : "=m" (*time) : "a" (time));
49 #define CLOCK_TICK_RATE 1193180 /* Underlying HZ */
51 typedef unsigned long long cycles_t;
53 static inline unsigned long long get_clock (void)
55 unsigned long long clk;
57 #if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ > 2)
58 asm volatile("stck %0" : "=Q" (clk) : : "cc");
59 #else /* __GNUC__ */
60 asm volatile("stck 0(%1)" : "=m" (clk) : "a" (&clk) : "cc");
61 #endif /* __GNUC__ */
62 return clk;
65 static inline void get_clock_extended(void *dest)
67 typedef struct { unsigned long long clk[2]; } __clock_t;
69 #if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ > 2)
70 asm volatile("stcke %0" : "=Q" (*((__clock_t *)dest)) : : "cc");
71 #else /* __GNUC__ */
72 asm volatile("stcke 0(%1)" : "=m" (*((__clock_t *)dest))
73 : "a" ((__clock_t *)dest) : "cc");
74 #endif /* __GNUC__ */
77 static inline cycles_t get_cycles(void)
79 return (cycles_t) get_clock() >> 2;
82 int get_sync_clock(unsigned long long *clock);
83 void init_cpu_timer(void);
85 #endif