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.
30 #ifndef _LINUX_KTIME_H
31 #define _LINUX_KTIME_H
33 #include <linux/types.h>
34 #include <linux/time.h>
35 #include <linux/jiffies.h>
37 #define ktime_get_ts(x) getnanouptime(x)
39 /* time values in nanoseconds */
44 typedef union ktime ktime_t;
46 #define KTIME_MAX ((s64)~((u64)1 << 63))
47 #define KTIME_SEC_MAX (KTIME_MAX / NSEC_PER_SEC)
50 ktime_to_ns(ktime_t kt)
56 ns_to_ktime(uint64_t nsec)
65 ktime_divns(const ktime_t kt, int64_t div)
71 ktime_to_us(ktime_t kt)
73 return ktime_divns(kt, NSEC_PER_USEC);
77 ktime_to_ms(ktime_t kt)
79 return ktime_divns(kt, NSEC_PER_MSEC);
82 static inline struct timeval
83 ktime_to_timeval(ktime_t kt)
85 return ns_to_timeval(kt.tv64);
89 ktime_add_ns(ktime_t kt, int64_t ns)
93 res.tv64 = kt.tv64 + ns;
98 ktime_sub_ns(ktime_t kt, int64_t ns)
102 res.tv64 = kt.tv64 - ns;
106 static inline ktime_t
107 ktime_set(const long secs, const unsigned long nsecs)
109 ktime_t retval = { (s64)secs * NSEC_PER_SEC + (s64)nsecs };
113 static inline ktime_t
114 ktime_sub(ktime_t lhs, ktime_t rhs)
116 lhs.tv64 -= rhs.tv64;
120 static inline int64_t
121 ktime_us_delta(ktime_t later, ktime_t earlier)
123 ktime_t diff = ktime_sub(later, earlier);
124 return ktime_to_us(diff);
127 static inline int64_t
128 ktime_ms_delta(ktime_t later, ktime_t earlier)
130 ktime_t diff = ktime_sub(later, earlier);
131 return ktime_to_ms(diff);
134 static inline ktime_t
135 ktime_add(ktime_t lhs, ktime_t rhs)
137 lhs.tv64 += rhs.tv64;
141 static inline ktime_t
142 timespec_to_ktime(struct timespec ts)
144 return (ktime_set(ts.tv_sec, ts.tv_nsec));
147 static inline ktime_t
148 timeval_to_ktime(struct timeval tv)
150 return (ktime_set(tv.tv_sec, tv.tv_usec * NSEC_PER_USEC));
153 #define ktime_to_timespec(kt) ns_to_timespec((kt).tv64)
154 #define ktime_to_timeval(kt) ns_to_timeval((kt).tv64)
155 #define ktime_to_ns(kt) ((kt).tv64)
157 static inline int64_t
164 kt = timespec_to_ktime(ts);
165 return (ktime_to_ns(kt));
168 #define ktime_get_raw_ns() ktime_get_ns()
170 static inline ktime_t
176 return (timespec_to_ktime(ts));
179 static inline ktime_t
180 ktime_get_boottime(void)
185 return (timespec_to_ktime(ts));
188 static inline ktime_t
194 return (timespec_to_ktime(ts));
197 #endif /* _LINUX_KTIME_H */