jiffies.h revision 271127
1/*- 2 * Copyright (c) 2010 Isilon Systems, Inc. 3 * Copyright (c) 2010 iX Systems, Inc. 4 * Copyright (c) 2010 Panasas, Inc. 5 * Copyright (c) 2013, 2014 Mellanox Technologies, Ltd. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice unmodified, this list of conditions, and the following 13 * disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29#ifndef _LINUX_JIFFIES_H_ 30#define _LINUX_JIFFIES_H_ 31 32#include <linux/types.h> 33#include <linux/kernel.h> 34 35#include <sys/time.h> 36#include <sys/kernel.h> 37 38static inline int 39msecs_to_jiffies(int msec) 40{ 41 struct timeval tv; 42 43 tv.tv_sec = msec / 1000; 44 tv.tv_usec = (msec % 1000) * 1000; 45 return (tvtohz(&tv)); 46} 47 48 49#define jiffies ticks 50#define jiffies_to_msecs(x) (((int64_t)(x)) * 1000 / hz) 51 52 53#define time_after(a, b) ((long)(b) - (long)(a) < 0) 54#define time_before(a, b) time_after(b,a) 55#define time_after_eq(a, b) ((long)(a) - (long)(b) >= 0) 56#define time_before_eq(a, b) time_after_eq(b, a) 57 58#define HZ hz 59 60#endif /* _LINUX_JIFFIES_H_ */ 61