Cregit: Linux 5.15: cputime.h

Contributors: 7
Author	Tokens	Token Proportion	Commits	Commit Proportion
Martin Schwidefsky	53	64.63%	9	56.25%
Rik Van Riel	11	13.41%	1	6.25%
Frédéric Weisbecker	9	10.98%	2	12.50%
Sven Schnelle	6	7.32%	1	6.25%
Michael Holzheu	1	1.22%	1	6.25%
Greg Kroah-Hartman	1	1.22%	1	6.25%
Heiko Carstens	1	1.22%	1	6.25%
Total	82		16

/* SPDX-License-Identifier: GPL-2.0 */
/*
 *  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)

void account_idle_time_irq(void);

#endif /* _S390_CPUTIME_H */