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40 lines
840 B
40 lines
840 B
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* Copyright IBM Corp. 2004 |
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* |
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* Author: Martin Schwidefsky <[email protected]> |
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*/ |
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#ifndef _S390_CPUTIME_H |
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#define _S390_CPUTIME_H |
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#include <linux/types.h> |
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#include <asm/timex.h> |
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#define CPUTIME_PER_USEC 4096ULL |
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#define CPUTIME_PER_SEC (CPUTIME_PER_USEC * USEC_PER_SEC) |
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/* We want to use full resolution of the CPU timer: 2**-12 micro-seconds. */ |
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#define cmpxchg_cputime(ptr, old, new) cmpxchg64(ptr, old, new) |
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/* |
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* Convert cputime to microseconds. |
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*/ |
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static inline u64 cputime_to_usecs(const u64 cputime) |
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{ |
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return cputime >> 12; |
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} |
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/* |
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* Convert cputime to nanoseconds. |
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*/ |
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#define cputime_to_nsecs(cputime) tod_to_ns(cputime) |
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u64 arch_cpu_idle_time(int cpu); |
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#define arch_idle_time(cpu) arch_cpu_idle_time(cpu) |
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void account_idle_time_irq(void); |
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#endif /* _S390_CPUTIME_H */
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