[mirror_spl.git] / include / linux / delay_compat.h

/*
 *  Copyright (C) 2007-2013 Lawrence Livermore National Security, LLC.
 *  Copyright (C) 2007 The Regents of the University of California.
 *  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
 *  Written by Brian Behlendorf <behlendorf1@llnl.gov>.
 *  UCRL-CODE-235197
 *
 *  This file is part of the SPL, Solaris Porting Layer.
 *  For details, see <http://zfsonlinux.org/>.
 *
 *  The SPL is free software; you can redistribute it and/or modify it
 *  under the terms of the GNU General Public License as published by the
 *  Free Software Foundation; either version 2 of the License, or (at your
 *  option) any later version.
 *
 *  The SPL is distributed in the hope that it will be useful, but WITHOUT
 *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 *  for more details.
 *
 *  You should have received a copy of the GNU General Public License along
 *  with the SPL.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef _SPL_DELAY_COMPAT_H
#define	_SPL_DELAY_COMPAT_H

#include <linux/delay.h>
#include <linux/time.h>

/* usleep_range() introduced in 2.6.36 */
#ifndef HAVE_USLEEP_RANGE

static inline void
usleep_range(unsigned long min, unsigned long max)
{
	unsigned int min_ms = min / USEC_PER_MSEC;

	if (min >= MAX_UDELAY_MS)
		msleep(min_ms);
	else
		udelay(min);
}

#endif /* HAVE_USLEEP_RANGE */

#endif /* _SPL_DELAY_COMPAT_H */
Commit	Line	Data
4b393c50	1	/*
184c6873 NB	2	* Copyright (C) 2007-2013 Lawrence Livermore National Security, LLC.
	3	* Copyright (C) 2007 The Regents of the University of California.
	4	* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
	5	* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
	6	* UCRL-CODE-235197
	7	*
	8	* This file is part of the SPL, Solaris Porting Layer.
	9	* For details, see <http://zfsonlinux.org/>.
	10	*
	11	* The SPL is free software; you can redistribute it and/or modify it
	12	* under the terms of the GNU General Public License as published by the
	13	* Free Software Foundation; either version 2 of the License, or (at your
	14	* option) any later version.
	15	*
	16	* The SPL is distributed in the hope that it will be useful, but WITHOUT
	17	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	18	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	19	* for more details.
	20	*
	21	* You should have received a copy of the GNU General Public License along
	22	* with the SPL. If not, see <http://www.gnu.org/licenses/>.
4b393c50	23	*/
184c6873 NB	24
184c6873 NB	25	#ifndef _SPL_DELAY_COMPAT_H
ce319db5	26	#define _SPL_DELAY_COMPAT_H
184c6873 NB	27
	28	#include <linux/delay.h>
	29	#include <linux/time.h>
	30
	31	/* usleep_range() introduced in 2.6.36 */
	32	#ifndef HAVE_USLEEP_RANGE
	33
	34	static inline void
	35	usleep_range(unsigned long min, unsigned long max)
	36	{
	37	unsigned int min_ms = min / USEC_PER_MSEC;
	38
	39	if (min >= MAX_UDELAY_MS)
	40	msleep(min_ms);
	41	else
	42	udelay(min);
	43	}
	44
	45	#endif /* HAVE_USLEEP_RANGE */
	46
	47	#endif /* _SPL_DELAY_COMPAT_H */