1 /*
2 * Copyright (c) 2015-2020 François Tigeot <ftigeot@wolfpond.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice unmodified, this list of conditions, and the following
10 * disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 #ifndef _LINUX_TIMEKEEPING_H_
28 #define _LINUX_TIMEKEEPING_H_
29
ktime_get_raw_ns(void)30 static inline u64 ktime_get_raw_ns(void)
31 {
32 struct timespec ts;
33
34 nanouptime(&ts);
35
36 return (ts.tv_sec * NSEC_PER_SEC) + ts.tv_nsec;
37 }
38
ktime_mono_to_real(ktime_t mono)39 static inline ktime_t ktime_mono_to_real(ktime_t mono)
40 {
41 return mono;
42 }
43
ktime_get_real(void)44 static inline ktime_t ktime_get_real(void)
45 {
46 return ktime_get_raw_ns();
47 }
48
49 /* Include time spent in suspend state */
50 static inline ktime_t
ktime_get_boottime(void)51 ktime_get_boottime(void)
52 {
53 return ktime_get_real();
54 }
55
56 static inline s64
ktime_ms_delta(const ktime_t later,const ktime_t earlier)57 ktime_ms_delta(const ktime_t later, const ktime_t earlier)
58 {
59 return (later - earlier) / NSEC_PER_MSEC;
60 }
61
62 static inline void
do_gettimeofday(struct timeval * tv)63 do_gettimeofday(struct timeval *tv)
64 {
65 microtime(tv);
66 }
67
68 static inline ktime_t
ktime_get_raw(void)69 ktime_get_raw(void)
70 {
71 return ktime_get_raw_ns();
72 }
73
74 #endif /* _LINUX_TIMEKEEPING_H_ */
75