168 lines
3.8 KiB
C
168 lines
3.8 KiB
C
/*-
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* Copyright (c) 2014-2015 Mellanox Technologies, Ltd.
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* Copyright (c) 2015 François Tigeot
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _LINUX_KTIME_H
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#define _LINUX_KTIME_H
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#include <linux/types.h>
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#include <linux/time.h>
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#include <linux/jiffies.h>
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#define ktime_get_ts(x) getnanouptime(x)
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/* time values in nanoseconds */
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union ktime {
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int64_t tv64;
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};
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typedef union ktime ktime_t;
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#define KTIME_MAX ((s64)~((u64)1 << 63))
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#define KTIME_SEC_MAX (KTIME_MAX / NSEC_PER_SEC)
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static inline int64_t
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ktime_to_ns(ktime_t kt)
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{
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return kt.tv64;
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}
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static inline int64_t
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ktime_divns(const ktime_t kt, int64_t div)
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{
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return kt.tv64 / div;
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}
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static inline int64_t
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ktime_to_us(ktime_t kt)
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{
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return ktime_divns(kt, NSEC_PER_USEC);
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}
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static inline int64_t
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ktime_to_ms(ktime_t kt)
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{
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return ktime_divns(kt, NSEC_PER_MSEC);
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}
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static inline struct timeval
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ktime_to_timeval(ktime_t kt)
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{
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return ns_to_timeval(kt.tv64);
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}
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static inline ktime_t
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ktime_add_ns(ktime_t kt, int64_t ns)
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{
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ktime_t res;
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res.tv64 = kt.tv64 + ns;
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return kt;
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}
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static inline ktime_t
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ktime_sub_ns(ktime_t kt, int64_t ns)
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{
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ktime_t res;
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res.tv64 = kt.tv64 - ns;
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return kt;
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}
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static inline ktime_t
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ktime_set(const long secs, const unsigned long nsecs)
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{
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ktime_t retval = { (s64)secs * NSEC_PER_SEC + (s64)nsecs };
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return (retval);
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}
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static inline ktime_t
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ktime_sub(ktime_t lhs, ktime_t rhs)
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{
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lhs.tv64 -= rhs.tv64;
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return (lhs);
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}
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static inline int64_t
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ktime_us_delta(ktime_t later, ktime_t earlier)
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{
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ktime_t diff = ktime_sub(later, earlier);
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return ktime_to_us(diff);
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}
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static inline int64_t
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ktime_ms_delta(ktime_t later, ktime_t earlier)
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{
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ktime_t diff = ktime_sub(later, earlier);
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return ktime_to_ms(diff);
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}
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static inline ktime_t
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ktime_add(ktime_t lhs, ktime_t rhs)
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{
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lhs.tv64 += rhs.tv64;
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return (lhs);
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}
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static inline ktime_t
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timespec_to_ktime(struct timespec ts)
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{
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return (ktime_set(ts.tv_sec, ts.tv_nsec));
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}
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static inline ktime_t
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timeval_to_ktime(struct timeval tv)
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{
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return (ktime_set(tv.tv_sec, tv.tv_usec * NSEC_PER_USEC));
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}
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#define ktime_to_timespec(kt) ns_to_timespec((kt).tv64)
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#define ktime_to_timeval(kt) ns_to_timeval((kt).tv64)
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#define ktime_to_ns(kt) ((kt).tv64)
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static inline s64
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ktime_get_ns(void)
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{
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struct timespec ts;
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ktime_t kt;
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ktime_get_ts(&ts);
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kt = timespec_to_ktime(ts);
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return (ktime_to_ns(kt));
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}
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static inline ktime_t
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ktime_get(void)
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{
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struct timespec ts;
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ktime_get_ts(&ts);
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return (timespec_to_ktime(ts));
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}
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#endif /* _LINUX_KTIME_H */
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