1 /* 2 * Copyright (c) 2015-2018 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 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 39 static inline ktime_t ktime_mono_to_real(ktime_t mono) 40 { 41 return mono; 42 } 43 44 static inline ktime_t ktime_get_real(void) 45 { 46 ktime_t kt; 47 48 kt.tv64 = ktime_get_raw_ns(); 49 return kt; 50 } 51 52 /* Include time spent in suspend state */ 53 static inline ktime_t 54 ktime_get_boottime(void) 55 { 56 return ktime_get_real(); 57 } 58 59 static inline s64 60 ktime_ms_delta(const ktime_t later, const ktime_t earlier) 61 { 62 return (later.tv64 - earlier.tv64) / NSEC_PER_MSEC; 63 } 64 65 static inline void 66 do_gettimeofday(struct timeval *tv) 67 { 68 microtime(tv); 69 } 70 71 #endif /* _LINUX_TIMEKEEPING_H_ */ 72