2 * Copyright (c) 2014-2015 Mellanox Technologies, Ltd.
3 * Copyright (c) 2015 François Tigeot
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice unmodified, this list of conditions, and the following
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 #ifndef _LINUX_KTIME_H
30 #define _LINUX_KTIME_H
32 #include <linux/types.h>
33 #include <linux/time.h>
34 #include <linux/jiffies.h>
36 #define ktime_get_ts(x) getnanouptime(x)
38 /* time values in nanoseconds */
43 typedef union ktime ktime_t;
45 #define KTIME_MAX ((s64)~((u64)1 << 63))
46 #define KTIME_SEC_MAX (KTIME_MAX / NSEC_PER_SEC)
49 ktime_to_ns(ktime_t kt)
54 static inline struct timeval
55 ktime_to_timeval(ktime_t kt)
57 return ns_to_timeval(kt.tv64);
61 ktime_add_ns(ktime_t kt, int64_t ns)
65 res.tv64 = kt.tv64 + ns;
70 ktime_sub_ns(ktime_t kt, int64_t ns)
74 res.tv64 = kt.tv64 - ns;
79 ktime_set(const long secs, const unsigned long nsecs)
81 ktime_t retval = { (s64)secs * NSEC_PER_SEC + (s64)nsecs };
86 ktime_sub(ktime_t lhs, ktime_t rhs)
93 ktime_add(ktime_t lhs, ktime_t rhs)
100 timespec_to_ktime(struct timespec ts)
102 return (ktime_set(ts.tv_sec, ts.tv_nsec));
105 static inline ktime_t
106 timeval_to_ktime(struct timeval tv)
108 return (ktime_set(tv.tv_sec, tv.tv_usec * NSEC_PER_USEC));
111 #define ktime_to_timespec(kt) ns_to_timespec((kt).tv64)
112 #define ktime_to_timeval(kt) ns_to_timeval((kt).tv64)
113 #define ktime_to_ns(kt) ((kt).tv64)
122 kt = timespec_to_ktime(ts);
123 return (ktime_to_ns(kt));
126 static inline ktime_t
132 return (timespec_to_ktime(ts));
135 #endif /* _LINUX_KTIME_H */