FreeBSD/Linux Kernel Cross Reference
sys/compat/linuxkpi/common/include/linux/ktime.h

     /*-
      * Copyright (c) 2018 Limelight Networks, Inc.
      * Copyright (c) 2014-2018 Mellanox Technologies, Ltd.
      * Copyright (c) 2015 François Tigeot
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice unmodified, this list of conditions, and the following
     *    disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *
     * $FreeBSD$
     */
    
    #ifndef _LINUXKPI_LINUX_KTIME_H
    #define _LINUXKPI_LINUX_KTIME_H
    
    #include <linux/types.h>
    #include <linux/time.h>
    #include <linux/jiffies.h>
    
    /* time values in nanoseconds */
    typedef s64 ktime_t;
    
    #define KTIME_MAX                       ((s64)~((u64)1 << 63))
    #define KTIME_SEC_MAX                   (KTIME_MAX / NSEC_PER_SEC)
    
    static inline int64_t
    ktime_to_ns(ktime_t kt)
    {
            return (kt);
    }
    
    static inline ktime_t
    ns_to_ktime(uint64_t nsec)
    {
            return (nsec);
    }
    
    static inline int64_t
    ktime_divns(const ktime_t kt, int64_t div)
    {
            return (kt / div);
    }
    
    static inline int64_t
    ktime_to_us(ktime_t kt)
    {
            return (ktime_divns(kt, NSEC_PER_USEC));
    }
    
    static inline int64_t
    ktime_to_ms(ktime_t kt)
    {
            return (ktime_divns(kt, NSEC_PER_MSEC));
    }
    
    static inline struct timeval
    ktime_to_timeval(ktime_t kt)
    {
            return (ns_to_timeval(kt));
    }
    
    static inline ktime_t
    ktime_add_ns(ktime_t kt, int64_t ns)
    {
            return (kt + ns);
    }
    
    static inline ktime_t
    ktime_add_ms(ktime_t kt, int64_t ms)
    {
    
            return (ktime_add_ns(kt, ms * NSEC_PER_MSEC));
    }
    
    static inline ktime_t
    ktime_add_us(ktime_t kt, int64_t us)
    {
    
            return (ktime_add_ns(kt, us * NSEC_PER_USEC));
    }
    
   static inline ktime_t
   ktime_sub_ns(ktime_t kt, int64_t ns)
   {
           return (kt - ns);
   }
   
   static inline ktime_t
   ktime_set(const long secs, const unsigned long nsecs)
   {
           ktime_t retval = {(s64) secs * NSEC_PER_SEC + (s64) nsecs};
   
           return (retval);
   }
   
   static inline ktime_t
   ktime_sub(ktime_t lhs, ktime_t rhs)
   {
           return (lhs - rhs);
   }
   
   static inline int64_t
   ktime_us_delta(ktime_t later, ktime_t earlier)
   {
           ktime_t diff = ktime_sub(later, earlier);
   
           return (ktime_to_us(diff));
   }
   
   static inline int64_t
   ktime_ms_delta(ktime_t later, ktime_t earlier)
   {
           ktime_t diff = ktime_sub(later, earlier);
   
           return (ktime_to_ms(diff));
   }
   
   static inline ktime_t
   ktime_add(ktime_t lhs, ktime_t rhs)
   {
           return (lhs + rhs);
   }
   
   static inline int
   ktime_compare(const ktime_t cmp1, const ktime_t cmp2)
   {
   
           if (cmp1 > cmp2)
                   return (1);
           else if (cmp1 < cmp2)
                   return (-1);
           else
                   return (0);
   }
   
   static inline bool
   ktime_after(const ktime_t cmp1, const ktime_t cmp2)
   {
   
           return (ktime_compare(cmp1, cmp2) > 0);
   }
   
   static inline bool
   ktime_before(const ktime_t cmp1, const ktime_t cmp2)
   {
   
           return (ktime_compare(cmp1, cmp2) < 0);
   }
   
   static inline ktime_t
   timespec_to_ktime(struct timespec ts)
   {
           return (ktime_set(ts.tv_sec, ts.tv_nsec));
   }
   
   static inline ktime_t
   timeval_to_ktime(struct timeval tv)
   {
           return (ktime_set(tv.tv_sec, tv.tv_usec * NSEC_PER_USEC));
   }
   
   static inline int64_t
   timespec64_to_ns(struct timespec64 *ts)
   {
           return (timespec_to_ns(ts));
   }
   
   #define ktime_to_timespec(kt)           ns_to_timespec(kt)
   #define ktime_to_timespec64(kt)         ns_to_timespec(kt)
   #define ktime_to_timeval(kt)            ns_to_timeval(kt)
   #define ktime_to_ns(kt)                 (kt)
   #define ktime_get_ts(ts)                getnanouptime(ts)
   #define ktime_get_ts64(ts)              getnanouptime(ts)
   #define ktime_get_raw_ts64(ts)          getnanouptime(ts)
   #define getrawmonotonic64(ts)           getnanouptime(ts)
   
   static inline int64_t
   ktime_get_ns(void)
   {
           struct timespec ts;
   
           ktime_get_ts(&ts);
   
           return (ktime_to_ns(timespec_to_ktime(ts)));
   }
   
   static inline ktime_t
   ktime_get(void)
   {
           struct timespec ts;
   
           ktime_get_ts(&ts);
           return (timespec_to_ktime(ts));
   }
   
   static inline ktime_t
   ktime_get_boottime(void)
   {
           struct timespec ts;
   
           nanouptime(&ts);
           return (timespec_to_ktime(ts));
   }
   
   static inline uint64_t
   ktime_get_boottime_ns(void)
   {
   
           return (ktime_to_ns(ktime_get_boottime()));
   }
   
   static inline ktime_t
   ktime_get_real(void)
   {
           struct timespec ts;
   
           nanotime(&ts);
           return (timespec_to_ktime(ts));
   }
   
   static inline ktime_t
   ktime_get_real_seconds(void)
   {
           struct timespec ts;
   
           nanotime(&ts);
           return (ts.tv_sec);
   }
   
   static inline ktime_t
   ktime_get_raw(void)
   {
           struct timespec ts;
   
           nanouptime(&ts);
           return (timespec_to_ktime(ts));
   }
   
   static inline u64
   ktime_get_raw_ns(void)
   {
           struct timespec ts;
   
           nanouptime(&ts);
           return (ktime_to_ns(timespec_to_ktime(ts)));
   }
   
   #endif /* _LINUXKPI_LINUX_KTIME_H */

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