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/*-
* Copyright (c) 2014-2015 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 _LINUX_KTIME_H
#define _LINUX_KTIME_H
#include <linux/types.h>
#include <linux/time.h>
#include <linux/jiffies.h>
#define ktime_get_ts(x) getnanouptime(x)
/* time values in nanoseconds */
union ktime {
int64_t tv64;
};
typedef union ktime 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.tv64;
}
static inline struct timeval
ktime_to_timeval(ktime_t kt)
{
return ns_to_timeval(kt.tv64);
}
static inline ktime_t
ktime_add_ns(ktime_t kt, int64_t ns)
{
ktime_t res;
res.tv64 = kt.tv64 + ns;
return kt;
}
static inline ktime_t
ktime_sub_ns(ktime_t kt, int64_t ns)
{
ktime_t res;
res.tv64 = kt.tv64 - ns;
return kt;
}
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)
{
lhs.tv64 -= rhs.tv64;
return (lhs);
}
static inline ktime_t
ktime_add(ktime_t lhs, ktime_t rhs)
{
lhs.tv64 += rhs.tv64;
return (lhs);
}
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));
}
#define ktime_to_timespec(kt) ns_to_timespec((kt).tv64)
#define ktime_to_timeval(kt) ns_to_timeval((kt).tv64)
#define ktime_to_ns(kt) ((kt).tv64)
static inline s64
ktime_get_ns(void)
{
struct timespec ts;
ktime_t kt;
ktime_get_ts(&ts);
kt = timespec_to_ktime(ts);
return (ktime_to_ns(kt));
}
static inline ktime_t
ktime_get(void)
{
struct timespec ts;
ktime_get_ts(&ts);
return (timespec_to_ktime(ts));
}
#endif /* _LINUX_KTIME_H */
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