| /* 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) | |
| #endif /* _S390_CPUTIME_H */ |