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05f56ac92f
This allows other threads to execute, typically during hardware waiting loops. This also maches how the function works in Linux. Reviewed by: kib MFC after: 1 week Sponsored by: NVIDIA Networking
79 lines
2.4 KiB
C
79 lines
2.4 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) 2013-2021 Mellanox Technologies, Ltd.
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* Copyright (c) 2014 François Tigeot
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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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* $FreeBSD$
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*/
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#ifndef _LINUX_DELAY_H_
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#define _LINUX_DELAY_H_
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#include <linux/jiffies.h>
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#include <sys/systm.h>
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static inline void
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linux_msleep(unsigned int ms)
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{
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/* guard against invalid values */
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if (ms == 0)
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ms = 1;
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pause_sbt("lnxsleep", mstosbt(ms), 0, C_HARDCLOCK);
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}
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#undef msleep
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#define msleep(ms) linux_msleep(ms)
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#undef msleep_interruptible
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#define msleep_interruptible(ms) linux_msleep_interruptible(ms)
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#define udelay(t) DELAY(t)
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static inline void
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mdelay(unsigned long msecs)
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{
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while (msecs--)
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DELAY(1000);
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}
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static inline void
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ndelay(unsigned long x)
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{
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DELAY(howmany(x, 1000));
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}
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static inline void
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usleep_range(unsigned long min, unsigned long max)
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{
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/* guard against invalid values */
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if (min == 0)
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min = 1;
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pause_sbt("lnxsleep", ustosbt(min), 0, C_HARDCLOCK);
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}
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extern unsigned int linux_msleep_interruptible(unsigned int ms);
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#endif /* _LINUX_DELAY_H_ */
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