cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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cputime.h (840B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 *  Copyright IBM Corp. 2004
      4 *
      5 *  Author: Martin Schwidefsky <schwidefsky@de.ibm.com>
      6 */
      7
      8#ifndef _S390_CPUTIME_H
      9#define _S390_CPUTIME_H
     10
     11#include <linux/types.h>
     12#include <asm/timex.h>
     13
     14#define CPUTIME_PER_USEC 4096ULL
     15#define CPUTIME_PER_SEC (CPUTIME_PER_USEC * USEC_PER_SEC)
     16
     17/* We want to use full resolution of the CPU timer: 2**-12 micro-seconds. */
     18
     19#define cmpxchg_cputime(ptr, old, new) cmpxchg64(ptr, old, new)
     20
     21/*
     22 * Convert cputime to microseconds.
     23 */
     24static inline u64 cputime_to_usecs(const u64 cputime)
     25{
     26	return cputime >> 12;
     27}
     28
     29/*
     30 * Convert cputime to nanoseconds.
     31 */
     32#define cputime_to_nsecs(cputime) tod_to_ns(cputime)
     33
     34u64 arch_cpu_idle_time(int cpu);
     35
     36#define arch_idle_time(cpu) arch_cpu_idle_time(cpu)
     37
     38void account_idle_time_irq(void);
     39
     40#endif /* _S390_CPUTIME_H */