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5a79859ae0
Remove the 31 bit support in order to reduce maintenance cost and
effectively remove dead code. Since a couple of years there is no
distribution left that comes with a 31 bit kernel.
The 31 bit kernel also has been broken since more than a year before
anybody noticed. In addition I added a removal warning to the kernel
shown at ipl for 5 minutes: a960062e58 ("s390: add 31 bit warning
message") which let everybody know about the plan to remove 31 bit
code. We didn't get any response.
Given that the last 31 bit only machine was introduced in 1999 let's
remove the code.
Anybody with 31 bit user space code can still use the compat mode.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
149 lines
3.8 KiB
C
149 lines
3.8 KiB
C
/*
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* Copyright IBM Corp. 2004
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*
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* Author: Martin Schwidefsky <schwidefsky@de.ibm.com>
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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/div64.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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typedef unsigned long long __nocast cputime_t;
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typedef unsigned long long __nocast cputime64_t;
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#define cmpxchg_cputime(ptr, old, new) cmpxchg64(ptr, old, new)
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static inline unsigned long __div(unsigned long long n, unsigned long base)
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{
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return n / base;
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}
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#define cputime_one_jiffy jiffies_to_cputime(1)
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/*
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* Convert cputime to jiffies and back.
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*/
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static inline unsigned long cputime_to_jiffies(const cputime_t cputime)
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{
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return __div((__force unsigned long long) cputime, CPUTIME_PER_SEC / HZ);
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}
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static inline cputime_t jiffies_to_cputime(const unsigned int jif)
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{
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return (__force cputime_t)(jif * (CPUTIME_PER_SEC / HZ));
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}
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static inline u64 cputime64_to_jiffies64(cputime64_t cputime)
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{
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unsigned long long jif = (__force unsigned long long) cputime;
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do_div(jif, CPUTIME_PER_SEC / HZ);
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return jif;
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}
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static inline cputime64_t jiffies64_to_cputime64(const u64 jif)
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{
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return (__force cputime64_t)(jif * (CPUTIME_PER_SEC / HZ));
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}
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/*
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* Convert cputime to microseconds and back.
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*/
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static inline unsigned int cputime_to_usecs(const cputime_t cputime)
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{
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return (__force unsigned long long) cputime >> 12;
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}
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static inline cputime_t usecs_to_cputime(const unsigned int m)
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{
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return (__force cputime_t)(m * CPUTIME_PER_USEC);
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}
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#define usecs_to_cputime64(m) usecs_to_cputime(m)
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/*
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* Convert cputime to milliseconds and back.
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*/
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static inline unsigned int cputime_to_secs(const cputime_t cputime)
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{
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return __div((__force unsigned long long) cputime, CPUTIME_PER_SEC / 2) >> 1;
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}
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static inline cputime_t secs_to_cputime(const unsigned int s)
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{
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return (__force cputime_t)(s * CPUTIME_PER_SEC);
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}
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/*
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* Convert cputime to timespec and back.
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*/
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static inline cputime_t timespec_to_cputime(const struct timespec *value)
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{
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unsigned long long ret = value->tv_sec * CPUTIME_PER_SEC;
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return (__force cputime_t)(ret + __div(value->tv_nsec * CPUTIME_PER_USEC, NSEC_PER_USEC));
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}
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static inline void cputime_to_timespec(const cputime_t cputime,
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struct timespec *value)
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{
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unsigned long long __cputime = (__force unsigned long long) cputime;
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value->tv_nsec = (__cputime % CPUTIME_PER_SEC) * NSEC_PER_USEC / CPUTIME_PER_USEC;
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value->tv_sec = __cputime / CPUTIME_PER_SEC;
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}
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/*
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* Convert cputime to timeval and back.
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* Since cputime and timeval have the same resolution (microseconds)
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* this is easy.
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*/
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static inline cputime_t timeval_to_cputime(const struct timeval *value)
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{
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unsigned long long ret = value->tv_sec * CPUTIME_PER_SEC;
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return (__force cputime_t)(ret + value->tv_usec * CPUTIME_PER_USEC);
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}
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static inline void cputime_to_timeval(const cputime_t cputime,
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struct timeval *value)
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{
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unsigned long long __cputime = (__force unsigned long long) cputime;
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value->tv_usec = (__cputime % CPUTIME_PER_SEC) / CPUTIME_PER_USEC;
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value->tv_sec = __cputime / CPUTIME_PER_SEC;
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}
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/*
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* Convert cputime to clock and back.
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*/
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static inline clock_t cputime_to_clock_t(cputime_t cputime)
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{
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unsigned long long clock = (__force unsigned long long) cputime;
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do_div(clock, CPUTIME_PER_SEC / USER_HZ);
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return clock;
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}
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static inline cputime_t clock_t_to_cputime(unsigned long x)
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{
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return (__force cputime_t)(x * (CPUTIME_PER_SEC / USER_HZ));
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}
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/*
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* Convert cputime64 to clock.
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*/
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static inline clock_t cputime64_to_clock_t(cputime64_t cputime)
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{
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unsigned long long clock = (__force unsigned long long) cputime;
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do_div(clock, CPUTIME_PER_SEC / USER_HZ);
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return clock;
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}
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cputime64_t arch_cpu_idle_time(int cpu);
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#define arch_idle_time(cpu) arch_cpu_idle_time(cpu)
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#endif /* _S390_CPUTIME_H */
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