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102 lines
2.8 KiB
C
102 lines
2.8 KiB
C
/* $NetBSD: jiffies.h,v 1.6 2014/07/26 14:24:08 riastradh Exp $ */
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/*-
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* Copyright (c) 2013 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Taylor R. Campbell.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _LINUX_JIFFIES_H_
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#define _LINUX_JIFFIES_H_
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#include <sys/param.h>
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#include <sys/kernel.h>
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#define jiffies hardclock_ticks
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#define jiffies_64 hardclock_ticks /* XXX */
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/* XXX Er, what? */
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#define MAX_JIFFY_OFFSET ((INT_MAX >> 1) - 1)
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static inline unsigned int
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msecs_to_jiffies(unsigned int msec)
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{
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return mstohz(msec);
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}
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static inline unsigned int
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jiffies_to_msecs(unsigned int j)
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{
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return hztoms(j);
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}
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static inline unsigned int
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usecs_to_jiffies(unsigned int usec)
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{
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const struct timeval tv = {
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.tv_sec = usec / 1000000,
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.tv_usec = usec % 1000000,
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};
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return tvtohz(&tv);
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}
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static inline unsigned int
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timespec_to_jiffies(const struct timespec *ts)
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{
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return tstohz(ts);
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}
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/* XXX long is the wrong type here times... */
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#define __linux_time_compare(A, OP, B) (((long)(A) - (long)(B)) OP 0)
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static inline bool
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time_after(unsigned long a, unsigned long b)
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{
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return __linux_time_compare(a, >, b);
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}
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static inline bool
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time_after_eq(unsigned long a, unsigned long b)
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{
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return __linux_time_compare(a, >=, b);
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}
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static inline bool
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time_before(unsigned long a, unsigned long b)
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{
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return __linux_time_compare(a, <, b);
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}
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static inline bool
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time_before_eq(unsigned long a, unsigned long b)
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{
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return __linux_time_compare(a, <=, b);
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}
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#endif /* _LINUX_JIFFIES_H_ */
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