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 47 ktime_to_ns(ktime_t kt) 48 { 49 return (kt); 50 } 51 52 static inline ktime_t 53 ns_to_ktime(uint64_t nsec) 54 { 55 return (nsec); 56 } 57 58 static inline int64_t 59 ktime_divns(const ktime_t kt, int64_t div) 60 { 61 return (kt / div); 62 } 63 64 static inline int64_t 65 ktime_to_us(ktime_t kt) 66 { 67 return (ktime_divns(kt, NSEC_PER_USEC)); 68 } 69 70 static inline int64_t 71 ktime_to_ms(ktime_t kt) 72 { 73 return (ktime_divns(kt, NSEC_PER_MSEC)); 74 } 75 76 static inline struct timeval 77 ktime_to_timeval(ktime_t kt) 78 { 79 return (ns_to_timeval(kt)); 80 } 81 82 static inline ktime_t 83 ktime_add_ns(ktime_t kt, int64_t ns) 84 { 85 return (kt + ns); 86 } 87 88 static inline ktime_t 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 96 ktime_sub_ns(ktime_t kt, int64_t ns) 97 { 98 return (kt - ns); 99 } 100 101 static inline ktime_t 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 110 ktime_sub(ktime_t lhs, ktime_t rhs) 111 { 112 return (lhs - rhs); 113 } 114 115 static inline int64_t 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 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 132 ktime_add(ktime_t lhs, ktime_t rhs) 133 { 134 return (lhs + rhs); 135 } 136 137 static inline int 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 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 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 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 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) 179 180 static inline int64_t 181 ktime_get_ns(void) 182 { 183 struct timespec ts; 184 185 ktime_get_ts(&ts); 186 187 return (ktime_to_ns(timespec_to_ktime(ts))); 188 } 189 190 static inline ktime_t 191 ktime_get(void) 192 { 193 struct timespec ts; 194 195 ktime_get_ts(&ts); 196 return (timespec_to_ktime(ts)); 197 } 198 199 static inline ktime_t 200 ktime_get_boottime(void) 201 { 202 struct timespec ts; 203 204 nanouptime(&ts); 205 return (timespec_to_ktime(ts)); 206 } 207 208 static inline ktime_t 209 ktime_get_real(void) 210 { 211 struct timespec ts; 212 213 nanotime(&ts); 214 return (timespec_to_ktime(ts)); 215 } 216 217 static inline ktime_t 218 ktime_get_real_seconds(void) 219 { 220 struct timespec ts; 221 222 nanotime(&ts); 223 return (ts.tv_sec); 224 } 225 226 static inline ktime_t 227 ktime_get_raw(void) 228 { 229 struct timespec ts; 230 231 nanotime(&ts); 232 return (timespec_to_ktime(ts)); 233 } 234 235 static inline u64 236 ktime_get_raw_ns(void) 237 { 238 struct timespec ts; 239 240 nanouptime(&ts); 241 return (ktime_to_ns(timespec_to_ktime(ts))); 242 } 243 244 #endif /* _LINUX_KTIME_H */ 245