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 /* time values in nanoseconds */ 39 typedef s64 ktime_t; 40 41 #define KTIME_MAX ((s64)~((u64)1 << 63)) 42 #define KTIME_SEC_MAX (KTIME_MAX / NSEC_PER_SEC) 43 44 static inline int64_t 45 ktime_to_ns(ktime_t kt) 46 { 47 return (kt); 48 } 49 50 static inline ktime_t 51 ns_to_ktime(uint64_t nsec) 52 { 53 return (nsec); 54 } 55 56 static inline int64_t 57 ktime_divns(const ktime_t kt, int64_t div) 58 { 59 return (kt / div); 60 } 61 62 static inline int64_t 63 ktime_to_us(ktime_t kt) 64 { 65 return (ktime_divns(kt, NSEC_PER_USEC)); 66 } 67 68 static inline int64_t 69 ktime_to_ms(ktime_t kt) 70 { 71 return (ktime_divns(kt, NSEC_PER_MSEC)); 72 } 73 74 static inline struct timeval 75 ktime_to_timeval(ktime_t kt) 76 { 77 return (ns_to_timeval(kt)); 78 } 79 80 static inline ktime_t 81 ktime_add_ns(ktime_t kt, int64_t ns) 82 { 83 return (kt + ns); 84 } 85 86 static inline ktime_t 87 ktime_add_ms(ktime_t kt, int64_t ms) 88 { 89 90 return (ktime_add_ns(kt, ms * NSEC_PER_MSEC)); 91 } 92 93 static inline ktime_t 94 ktime_add_us(ktime_t kt, int64_t us) 95 { 96 97 return (ktime_add_ns(kt, us * NSEC_PER_USEC)); 98 } 99 100 static inline ktime_t 101 ktime_sub_ns(ktime_t kt, int64_t ns) 102 { 103 return (kt - ns); 104 } 105 106 static inline ktime_t 107 ktime_set(const long secs, const unsigned long nsecs) 108 { 109 ktime_t retval = {(s64) secs * NSEC_PER_SEC + (s64) nsecs}; 110 111 return (retval); 112 } 113 114 static inline ktime_t 115 ktime_sub(ktime_t lhs, ktime_t rhs) 116 { 117 return (lhs - rhs); 118 } 119 120 static inline int64_t 121 ktime_us_delta(ktime_t later, ktime_t earlier) 122 { 123 ktime_t diff = ktime_sub(later, earlier); 124 125 return (ktime_to_us(diff)); 126 } 127 128 static inline int64_t 129 ktime_ms_delta(ktime_t later, ktime_t earlier) 130 { 131 ktime_t diff = ktime_sub(later, earlier); 132 133 return (ktime_to_ms(diff)); 134 } 135 136 static inline ktime_t 137 ktime_add(ktime_t lhs, ktime_t rhs) 138 { 139 return (lhs + rhs); 140 } 141 142 static inline int 143 ktime_compare(const ktime_t cmp1, const ktime_t cmp2) 144 { 145 146 if (cmp1 > cmp2) 147 return (1); 148 else if (cmp1 < cmp2) 149 return (-1); 150 else 151 return (0); 152 } 153 154 static inline bool 155 ktime_after(const ktime_t cmp1, const ktime_t cmp2) 156 { 157 158 return (ktime_compare(cmp1, cmp2) > 0); 159 } 160 161 static inline bool 162 ktime_before(const ktime_t cmp1, const ktime_t cmp2) 163 { 164 165 return (ktime_compare(cmp1, cmp2) < 0); 166 } 167 168 static inline ktime_t 169 timespec_to_ktime(struct timespec ts) 170 { 171 return (ktime_set(ts.tv_sec, ts.tv_nsec)); 172 } 173 174 static inline ktime_t 175 timeval_to_ktime(struct timeval tv) 176 { 177 return (ktime_set(tv.tv_sec, tv.tv_usec * NSEC_PER_USEC)); 178 } 179 180 static inline int64_t 181 timespec64_to_ns(struct timespec64 *ts) 182 { 183 return (timespec_to_ns(ts)); 184 } 185 186 #define ktime_to_timespec(kt) ns_to_timespec(kt) 187 #define ktime_to_timespec64(kt) ns_to_timespec(kt) 188 #define ktime_to_timeval(kt) ns_to_timeval(kt) 189 #define ktime_to_ns(kt) (kt) 190 #define ktime_get_ts(ts) getnanouptime(ts) 191 #define ktime_get_ts64(ts) getnanouptime(ts) 192 #define ktime_get_raw_ts64(ts) getnanouptime(ts) 193 #define getrawmonotonic64(ts) getnanouptime(ts) 194 195 static inline int64_t 196 ktime_get_ns(void) 197 { 198 struct timespec ts; 199 200 ktime_get_ts(&ts); 201 202 return (ktime_to_ns(timespec_to_ktime(ts))); 203 } 204 205 static inline ktime_t 206 ktime_get(void) 207 { 208 struct timespec ts; 209 210 ktime_get_ts(&ts); 211 return (timespec_to_ktime(ts)); 212 } 213 214 static inline ktime_t 215 ktime_get_boottime(void) 216 { 217 struct timespec ts; 218 219 nanouptime(&ts); 220 return (timespec_to_ktime(ts)); 221 } 222 223 static inline ktime_t 224 ktime_get_real(void) 225 { 226 struct timespec ts; 227 228 nanotime(&ts); 229 return (timespec_to_ktime(ts)); 230 } 231 232 static inline ktime_t 233 ktime_get_real_seconds(void) 234 { 235 struct timespec ts; 236 237 nanotime(&ts); 238 return (ts.tv_sec); 239 } 240 241 static inline ktime_t 242 ktime_get_raw(void) 243 { 244 struct timespec ts; 245 246 nanouptime(&ts); 247 return (timespec_to_ktime(ts)); 248 } 249 250 static inline u64 251 ktime_get_raw_ns(void) 252 { 253 struct timespec ts; 254 255 nanouptime(&ts); 256 return (ktime_to_ns(timespec_to_ktime(ts))); 257 } 258 259 #endif /* _LINUX_KTIME_H */ 260