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 29 #ifndef _LINUXKPI_LINUX_KTIME_H 30 #define _LINUXKPI_LINUX_KTIME_H 31 32 #include <linux/types.h> 33 #include <linux/time.h> 34 #include <linux/jiffies.h> 35 36 /* time values in nanoseconds */ 37 typedef s64 ktime_t; 38 39 #define KTIME_MAX ((s64)~((u64)1 << 63)) 40 #define KTIME_SEC_MAX (KTIME_MAX / NSEC_PER_SEC) 41 42 static inline int64_t 43 ktime_to_ns(ktime_t kt) 44 { 45 return (kt); 46 } 47 48 static inline ktime_t 49 ns_to_ktime(uint64_t nsec) 50 { 51 return (nsec); 52 } 53 54 static inline int64_t 55 ktime_divns(const ktime_t kt, int64_t div) 56 { 57 return (kt / div); 58 } 59 60 static inline int64_t 61 ktime_to_us(ktime_t kt) 62 { 63 return (ktime_divns(kt, NSEC_PER_USEC)); 64 } 65 66 static inline int64_t 67 ktime_to_ms(ktime_t kt) 68 { 69 return (ktime_divns(kt, NSEC_PER_MSEC)); 70 } 71 72 static inline struct timeval 73 ktime_to_timeval(ktime_t kt) 74 { 75 return (ns_to_timeval(kt)); 76 } 77 78 static inline ktime_t 79 ktime_add_ns(ktime_t kt, int64_t ns) 80 { 81 return (kt + ns); 82 } 83 84 static inline ktime_t 85 ktime_add_ms(ktime_t kt, int64_t ms) 86 { 87 88 return (ktime_add_ns(kt, ms * NSEC_PER_MSEC)); 89 } 90 91 static inline ktime_t 92 ktime_add_us(ktime_t kt, int64_t us) 93 { 94 95 return (ktime_add_ns(kt, us * NSEC_PER_USEC)); 96 } 97 98 static inline ktime_t 99 ktime_sub_ns(ktime_t kt, int64_t ns) 100 { 101 return (kt - ns); 102 } 103 104 static inline ktime_t 105 ktime_set(const long secs, const unsigned long nsecs) 106 { 107 ktime_t retval = {(s64) secs * NSEC_PER_SEC + (s64) nsecs}; 108 109 return (retval); 110 } 111 112 static inline ktime_t 113 ktime_sub(ktime_t lhs, ktime_t rhs) 114 { 115 return (lhs - rhs); 116 } 117 118 static inline int64_t 119 ktime_us_delta(ktime_t later, ktime_t earlier) 120 { 121 ktime_t diff = ktime_sub(later, earlier); 122 123 return (ktime_to_us(diff)); 124 } 125 126 static inline int64_t 127 ktime_ms_delta(ktime_t later, ktime_t earlier) 128 { 129 ktime_t diff = ktime_sub(later, earlier); 130 131 return (ktime_to_ms(diff)); 132 } 133 134 static inline ktime_t 135 ktime_add(ktime_t lhs, ktime_t rhs) 136 { 137 return (lhs + rhs); 138 } 139 140 static inline int 141 ktime_compare(const ktime_t cmp1, const ktime_t cmp2) 142 { 143 144 if (cmp1 > cmp2) 145 return (1); 146 else if (cmp1 < cmp2) 147 return (-1); 148 else 149 return (0); 150 } 151 152 static inline bool 153 ktime_after(const ktime_t cmp1, const ktime_t cmp2) 154 { 155 156 return (ktime_compare(cmp1, cmp2) > 0); 157 } 158 159 static inline bool 160 ktime_before(const ktime_t cmp1, const ktime_t cmp2) 161 { 162 163 return (ktime_compare(cmp1, cmp2) < 0); 164 } 165 166 static inline ktime_t 167 timespec_to_ktime(struct timespec ts) 168 { 169 return (ktime_set(ts.tv_sec, ts.tv_nsec)); 170 } 171 172 static inline ktime_t 173 timeval_to_ktime(struct timeval tv) 174 { 175 return (ktime_set(tv.tv_sec, tv.tv_usec * NSEC_PER_USEC)); 176 } 177 178 static inline int64_t 179 timespec64_to_ns(struct timespec64 *ts) 180 { 181 return (timespec_to_ns(ts)); 182 } 183 184 #define ktime_to_timespec(kt) ns_to_timespec(kt) 185 #define ktime_to_timespec64(kt) ns_to_timespec(kt) 186 #define ktime_to_timeval(kt) ns_to_timeval(kt) 187 #define ktime_to_ns(kt) (kt) 188 #define ktime_get_ts(ts) getnanouptime(ts) 189 #define ktime_get_ts64(ts) getnanouptime(ts) 190 #define ktime_get_raw_ts64(ts) getnanouptime(ts) 191 #define ktime_get_real_ts64(ts) getnanotime(ts) 192 #define getrawmonotonic64(ts) getnanouptime(ts) 193 194 static inline int64_t 195 ktime_get_ns(void) 196 { 197 struct timespec ts; 198 199 ktime_get_ts(&ts); 200 201 return (ktime_to_ns(timespec_to_ktime(ts))); 202 } 203 204 static inline ktime_t 205 ktime_get(void) 206 { 207 struct timespec ts; 208 209 ktime_get_ts(&ts); 210 return (timespec_to_ktime(ts)); 211 } 212 213 static inline ktime_t 214 ktime_get_boottime(void) 215 { 216 struct timespec ts; 217 218 nanouptime(&ts); 219 return (timespec_to_ktime(ts)); 220 } 221 222 static inline uint64_t 223 ktime_get_boottime_ns(void) 224 { 225 226 return (ktime_to_ns(ktime_get_boottime())); 227 } 228 229 static inline ktime_t 230 ktime_get_real(void) 231 { 232 struct timespec ts; 233 234 nanotime(&ts); 235 return (timespec_to_ktime(ts)); 236 } 237 238 static inline ktime_t 239 ktime_get_real_seconds(void) 240 { 241 struct timespec ts; 242 243 nanotime(&ts); 244 return (ts.tv_sec); 245 } 246 247 static inline ktime_t 248 ktime_get_raw(void) 249 { 250 struct timespec ts; 251 252 nanouptime(&ts); 253 return (timespec_to_ktime(ts)); 254 } 255 256 static inline u64 257 ktime_get_raw_ns(void) 258 { 259 struct timespec ts; 260 261 nanouptime(&ts); 262 return (ktime_to_ns(timespec_to_ktime(ts))); 263 } 264 265 static inline uint64_t 266 ktime_get_raw_fast_ns(void) 267 { 268 struct timespec ts; 269 270 getnanouptime(&ts); 271 return (ktime_to_ns(timespec_to_ktime(ts))); 272 } 273 274 #endif /* _LINUXKPI_LINUX_KTIME_H */ 275