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/*-
* Copyright (c) 2010 Isilon Systems, Inc.
* Copyright (c) 2010 iX Systems, Inc.
* Copyright (c) 2010 Panasas, Inc.
* Copyright (c) 2013, 2014 Mellanox Technologies, Ltd.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _LINUX_JIFFIES_H_
#define _LINUX_JIFFIES_H_
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/time.h>
#include <sys/time.h>
#include <sys/kernel.h>
#include <sys/limits.h>
static inline int
msecs_to_jiffies(int msec)
{
struct timeval tv;
tv.tv_sec = msec / 1000;
tv.tv_usec = (msec % 1000) * 1000;
return (tvtohz(&tv) - 1);
}
#define jiffies ticks
#define jiffies_64 ticks
#define jiffies_to_msecs(x) (((int64_t)(x)) * 1000 / hz)
#define MAX_JIFFY_OFFSET ((INT_MAX >> 1) - 1)
#define time_after(a, b) ((int)((b) - (a)) < 0)
#define time_before(a, b) time_after(b,a)
#define time_after_eq(a, b) ((int)((a) - (b)) >= 0)
#define time_before_eq(a, b) time_after_eq(b, a)
#define time_in_range(a,b,c) \
(time_after_eq(a,b) && time_before_eq(a,c))
#define HZ hz
static inline int
timespec_to_jiffies(const struct timespec *ts)
{
u64 result;
result = ((u64)hz * ts->tv_sec) +
(((u64)hz * ts->tv_nsec + NSEC_PER_SEC - 1) / NSEC_PER_SEC);
if (result > MAX_JIFFY_OFFSET)
result = MAX_JIFFY_OFFSET;
return ((int)result);
}
static inline int
usecs_to_jiffies(const unsigned int u)
{
u64 result;
result = ((u64)u * hz + 1000000 - 1) / 1000000;
if (result > MAX_JIFFY_OFFSET)
result = MAX_JIFFY_OFFSET;
return ((int)result);
}
static inline u64
get_jiffies_64(void)
{
return ((u64)(unsigned)ticks);
}
#endif /* _LINUX_JIFFIES_H_ */
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