760a181bb2
positive value since it adds the current tick to its result. This differs from the behaviour in Linux, whose implementation does not add the extra tick, so subtract the extra tick in the OFED compat layer implementation. This addresses some incorrect handling of IB MAD timeouts, since some IB code depends on msecs_to_jiffies(0) returning 0. MFC after: 1 week Sponsored by: EMC / Isilon Storage Division
59 lines
2.1 KiB
C
59 lines
2.1 KiB
C
/*-
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* Copyright (c) 2010 Isilon Systems, Inc.
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* Copyright (c) 2010 iX Systems, Inc.
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* Copyright (c) 2010 Panasas, Inc.
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* Copyright (c) 2013, 2014 Mellanox Technologies, Ltd.
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* All rights reserved.
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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 unmodified, this list of conditions, and the following
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* 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 AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE 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 <linux/types.h>
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#include <linux/kernel.h>
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#include <sys/time.h>
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#include <sys/kernel.h>
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static inline int
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msecs_to_jiffies(int msec)
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{
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struct timeval tv;
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tv.tv_sec = msec / 1000;
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tv.tv_usec = (msec % 1000) * 1000;
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return (tvtohz(&tv) - 1);
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}
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#define jiffies ticks
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#define jiffies_to_msecs(x) (((int64_t)(x)) * 1000 / hz)
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#define time_after(a, b) ((int)((b) - (a)) < 0)
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#define time_before(a, b) time_after(b,a)
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#define time_after_eq(a, b) ((int)((a) - (b)) >= 0)
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#define time_before_eq(a, b) time_after_eq(b, a)
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#define HZ hz
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#endif /* _LINUX_JIFFIES_H_ */
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