/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ #ifndef _SYS_FS_ZFS_DELAY_H #define _SYS_FS_ZFS_DELAY_H #include <sys/timer.h> /* * Generic wrapper to sleep until a given time. */ #define zfs_sleep_until(wakeup) \ do { \ hrtime_t delta = wakeup - gethrtime(); \ \ if (delta > 0) { \ unsigned long delta_us; \ delta_us = delta / (NANOSEC / MICROSEC); \ usleep_range(delta_us, delta_us + 100); \ } \ } while (0) #endif /* _SYS_FS_ZFS_DELAY_H */