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LinuxKPI: Force the usleep_range() function to sleep instead of spinning on the timer.

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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
This commit is contained in:
Hans Petter Selasky 2021-07-10 21:56:29 +02:00
parent f52783fcf5
commit 05f56ac92f
1 changed files with 5 additions and 2 deletions
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7
sys/compat/linuxkpi/common/include/linux/delay.h
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@ -2,7 +2,7 @@
* Copyright (c) 2010 Isilon Systems, Inc.
* Copyright (c) 2010 iX Systems, Inc.
* Copyright (c) 2010 Panasas, Inc.
* Copyright (c) 2013-2015 Mellanox Technologies, Ltd.
* Copyright (c) 2013-2021 Mellanox Technologies, Ltd.
* Copyright (c) 2014 François Tigeot
* All rights reserved.
*
@ -68,7 +68,10 @@ ndelay(unsigned long x)
static inline void
usleep_range(unsigned long min, unsigned long max)
{
DELAY(min);
/* guard against invalid values */
if (min == 0)
min = 1;
pause_sbt("lnxsleep", ustosbt(min), 0, C_HARDCLOCK);
}
extern unsigned int linux_msleep_interruptible(unsigned int ms);