| /* |
| * 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/div64.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. */ |
| |
| typedef unsigned long long __nocast cputime_t; |
| typedef unsigned long long __nocast cputime64_t; |
| |
| #define cmpxchg_cputime(ptr, old, new) cmpxchg64(ptr, old, new) |
| |
| static inline unsigned long __div(unsigned long long n, unsigned long base) |
| { |
| return n / base; |
| } |
| |
| /* |
| * Convert cputime to microseconds and back. |
| */ |
| static inline unsigned int cputime_to_usecs(const cputime_t cputime) |
| { |
| return (__force unsigned long long) cputime >> 12; |
| } |
| |
| |
| u64 arch_cpu_idle_time(int cpu); |
| |
| #define arch_idle_time(cpu) arch_cpu_idle_time(cpu) |
| |
| #endif /* _S390_CPUTIME_H */ |
