1 /*-
2 * Copyright (c) 2018 Limelight Networks, Inc.
3 * Copyright (c) 2014-2018 Mellanox Technologies, Ltd.
4 * Copyright (c) 2015 François Tigeot
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice unmodified, this list of conditions, and the following
12 * disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * $FreeBSD$
29 */
30
31 #ifndef _LINUX_KTIME_H
32 #define _LINUX_KTIME_H
33
34 #include <linux/types.h>
35 #include <linux/time.h>
36 #include <linux/jiffies.h>
37
38 #define ktime_get_ts(x) getnanouptime(x)
39
40 /* time values in nanoseconds */
41 typedef s64 ktime_t;
42
43 #define KTIME_MAX ((s64)~((u64)1 << 63))
44 #define KTIME_SEC_MAX (KTIME_MAX / NSEC_PER_SEC)
45
46 static inline int64_t
ktime_to_ns(ktime_t kt)47 ktime_to_ns(ktime_t kt)
48 {
49 return (kt);
50 }
51
52 static inline ktime_t
ns_to_ktime(uint64_t nsec)53 ns_to_ktime(uint64_t nsec)
54 {
55 return (nsec);
56 }
57
58 static inline int64_t
ktime_divns(const ktime_t kt,int64_t div)59 ktime_divns(const ktime_t kt, int64_t div)
60 {
61 return (kt / div);
62 }
63
64 static inline int64_t
ktime_to_us(ktime_t kt)65 ktime_to_us(ktime_t kt)
66 {
67 return (ktime_divns(kt, NSEC_PER_USEC));
68 }
69
70 static inline int64_t
ktime_to_ms(ktime_t kt)71 ktime_to_ms(ktime_t kt)
72 {
73 return (ktime_divns(kt, NSEC_PER_MSEC));
74 }
75
76 static inline struct timeval
ktime_to_timeval(ktime_t kt)77 ktime_to_timeval(ktime_t kt)
78 {
79 return (ns_to_timeval(kt));
80 }
81
82 static inline ktime_t
ktime_add_ns(ktime_t kt,int64_t ns)83 ktime_add_ns(ktime_t kt, int64_t ns)
84 {
85 return (kt + ns);
86 }
87
88 static inline ktime_t
ktime_add_ms(ktime_t kt,int64_t ms)89 ktime_add_ms(ktime_t kt, int64_t ms)
90 {
91
92 return (ktime_add_ns(kt, ms * NSEC_PER_MSEC));
93 }
94
95 static inline ktime_t
ktime_sub_ns(ktime_t kt,int64_t ns)96 ktime_sub_ns(ktime_t kt, int64_t ns)
97 {
98 return (kt - ns);
99 }
100
101 static inline ktime_t
ktime_set(const long secs,const unsigned long nsecs)102 ktime_set(const long secs, const unsigned long nsecs)
103 {
104 ktime_t retval = {(s64) secs * NSEC_PER_SEC + (s64) nsecs};
105
106 return (retval);
107 }
108
109 static inline ktime_t
ktime_sub(ktime_t lhs,ktime_t rhs)110 ktime_sub(ktime_t lhs, ktime_t rhs)
111 {
112 return (lhs - rhs);
113 }
114
115 static inline int64_t
ktime_us_delta(ktime_t later,ktime_t earlier)116 ktime_us_delta(ktime_t later, ktime_t earlier)
117 {
118 ktime_t diff = ktime_sub(later, earlier);
119
120 return (ktime_to_us(diff));
121 }
122
123 static inline int64_t
ktime_ms_delta(ktime_t later,ktime_t earlier)124 ktime_ms_delta(ktime_t later, ktime_t earlier)
125 {
126 ktime_t diff = ktime_sub(later, earlier);
127
128 return (ktime_to_ms(diff));
129 }
130
131 static inline ktime_t
ktime_add(ktime_t lhs,ktime_t rhs)132 ktime_add(ktime_t lhs, ktime_t rhs)
133 {
134 return (lhs + rhs);
135 }
136
137 static inline int
ktime_compare(const ktime_t cmp1,const ktime_t cmp2)138 ktime_compare(const ktime_t cmp1, const ktime_t cmp2)
139 {
140
141 if (cmp1 > cmp2)
142 return (1);
143 else if (cmp1 < cmp2)
144 return (-1);
145 else
146 return (0);
147 }
148
149 static inline bool
ktime_after(const ktime_t cmp1,const ktime_t cmp2)150 ktime_after(const ktime_t cmp1, const ktime_t cmp2)
151 {
152
153 return (ktime_compare(cmp1, cmp2) > 0);
154 }
155
156 static inline bool
ktime_before(const ktime_t cmp1,const ktime_t cmp2)157 ktime_before(const ktime_t cmp1, const ktime_t cmp2)
158 {
159
160 return (ktime_compare(cmp1, cmp2) < 0);
161 }
162
163 static inline ktime_t
timespec_to_ktime(struct timespec ts)164 timespec_to_ktime(struct timespec ts)
165 {
166 return (ktime_set(ts.tv_sec, ts.tv_nsec));
167 }
168
169 static inline ktime_t
timeval_to_ktime(struct timeval tv)170 timeval_to_ktime(struct timeval tv)
171 {
172 return (ktime_set(tv.tv_sec, tv.tv_usec * NSEC_PER_USEC));
173 }
174
175 #define ktime_to_timespec(kt) ns_to_timespec(kt)
176 #define ktime_to_timespec64(kt) ns_to_timespec(kt)
177 #define ktime_to_timeval(kt) ns_to_timeval(kt)
178 #define ktime_to_ns(kt) (kt)
179 #define ktime_get_ts64(ts) ktime_get_ts(ts)
180
181 static inline int64_t
ktime_get_ns(void)182 ktime_get_ns(void)
183 {
184 struct timespec ts;
185
186 ktime_get_ts(&ts);
187
188 return (ktime_to_ns(timespec_to_ktime(ts)));
189 }
190
191 static inline ktime_t
ktime_get(void)192 ktime_get(void)
193 {
194 struct timespec ts;
195
196 ktime_get_ts(&ts);
197 return (timespec_to_ktime(ts));
198 }
199
200 static inline ktime_t
ktime_get_boottime(void)201 ktime_get_boottime(void)
202 {
203 struct timespec ts;
204
205 nanouptime(&ts);
206 return (timespec_to_ktime(ts));
207 }
208
209 static inline ktime_t
ktime_get_real(void)210 ktime_get_real(void)
211 {
212 struct timespec ts;
213
214 nanotime(&ts);
215 return (timespec_to_ktime(ts));
216 }
217
218 static inline ktime_t
ktime_get_real_seconds(void)219 ktime_get_real_seconds(void)
220 {
221 struct timespec ts;
222
223 nanotime(&ts);
224 return (ts.tv_sec);
225 }
226
227 static inline ktime_t
ktime_get_raw(void)228 ktime_get_raw(void)
229 {
230 struct timespec ts;
231
232 nanotime(&ts);
233 return (timespec_to_ktime(ts));
234 }
235
236 static inline u64
ktime_get_raw_ns(void)237 ktime_get_raw_ns(void)
238 {
239 struct timespec ts;
240
241 nanouptime(&ts);
242 return (ktime_to_ns(timespec_to_ktime(ts)));
243 }
244
245 #endif /* _LINUX_KTIME_H */
246