1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 *  Copyright IBM Corp. 2004
 4 *
 5 *  Author: Martin Schwidefsky <schwidefsky@de.ibm.com>
 6 */
 7
 8#ifndef _S390_CPUTIME_H
 9#define _S390_CPUTIME_H
10
11#include <linux/types.h>
12#include <asm/timex.h>
13
14#define CPUTIME_PER_USEC 4096ULL
15#define CPUTIME_PER_SEC (CPUTIME_PER_USEC * USEC_PER_SEC)
16
17/* We want to use full resolution of the CPU timer: 2**-12 micro-seconds. */
18
19#define cmpxchg_cputime(ptr, old, new) cmpxchg64(ptr, old, new)
20
21/*
22 * Convert cputime to microseconds.
23 */
24static inline u64 cputime_to_usecs(const u64 cputime)
25{
26	return cputime >> 12;
27}
28
29/*
30 * Convert cputime to nanoseconds.
31 */
32#define cputime_to_nsecs(cputime) tod_to_ns(cputime)
33
34u64 arch_cpu_idle_time(int cpu);
35
36#define arch_idle_time(cpu) arch_cpu_idle_time(cpu)
37
38void account_idle_time_irq(void);
39
40#endif /* _S390_CPUTIME_H */

 1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 *  Copyright IBM Corp. 2004
 4 *
 5 *  Author: Martin Schwidefsky <schwidefsky@de.ibm.com>
 6 */
 7
 8#ifndef _S390_CPUTIME_H
 9#define _S390_CPUTIME_H
10
11#include <linux/types.h>
12#include <asm/timex.h>
13
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
14/*
15 * Convert cputime to nanoseconds.
16 */
17#define cputime_to_nsecs(cputime) tod_to_ns(cputime)
 
 
 
 
18
19void account_idle_time_irq(void);
20
21#endif /* _S390_CPUTIME_H */