[mirror_ubuntu-bionic-kernel.git] / arch / s390 / include / asm / cputime.h

/*
 *  Copyright IBM Corp. 2004
 *
 *  Author: Martin Schwidefsky <schwidefsky@de.ibm.com>
 */

#ifndef _S390_CPUTIME_H
#define _S390_CPUTIME_H

#include <linux/types.h>
#include <asm/timex.h>

#define CPUTIME_PER_USEC 4096ULL
#define CPUTIME_PER_SEC (CPUTIME_PER_USEC * USEC_PER_SEC)

/* We want to use full resolution of the CPU timer: 2**-12 micro-seconds. */

#define cmpxchg_cputime(ptr, old, new) cmpxchg64(ptr, old, new)

/*
 * Convert cputime to microseconds.
 */
static inline u64 cputime_to_usecs(const u64 cputime)
{
	return cputime >> 12;
}

/*
 * Convert cputime to nanoseconds.
 */
#define cputime_to_nsecs(cputime) tod_to_ns(cputime)

u64 arch_cpu_idle_time(int cpu);

#define arch_idle_time(cpu) arch_cpu_idle_time(cpu)

#endif /* _S390_CPUTIME_H */
Commit	Line	Data
1da177e4	1	/*
a53c8fab	2	* Copyright IBM Corp. 2004
1da177e4 LT	3	*
	4	* Author: Martin Schwidefsky <schwidefsky@de.ibm.com>
	5	*/
	6
	7	#ifndef _S390_CPUTIME_H
	8	#define _S390_CPUTIME_H
	9
76d4e00a	10	#include <linux/types.h>
e53051e7	11	#include <asm/timex.h>
1da177e4	12
8461b63c FW	13	#define CPUTIME_PER_USEC 4096ULL
8461b63c FW	14	#define CPUTIME_PER_SEC (CPUTIME_PER_USEC * USEC_PER_SEC)
a7e1a9e3	15
aa5e97ce	16	/* We want to use full resolution of the CPU timer: 2*-12 micro-seconds. /
1da177e4	17
347abad9 RR	18	#define cmpxchg_cputime(ptr, old, new) cmpxchg64(ptr, old, new)
347abad9 RR	19
1da177e4	20	/*
e53051e7	21	* Convert cputime to microseconds.
1da177e4	22	*/
e69ca822	23	static inline u64 cputime_to_usecs(const u64 cputime)
1da177e4	24	{
e69ca822	25	return cputime >> 12;
1da177e4 LT	26	}
1da177e4 LT	27
e53051e7 MS	28	/*
	29	* Convert cputime to nanoseconds.
	30	*/
	31	#define cputime_to_nsecs(cputime) tod_to_ns(cputime)
	32
42b425b3	33	u64 arch_cpu_idle_time(int cpu);
76d4e00a	34
b5f87f15	35	#define arch_idle_time(cpu) arch_cpu_idle_time(cpu)
3c5d92a0	36
1da177e4	37	#endif /* _S390_CPUTIME_H */