1 // SPDX-License-Identifier: CDDL-1.0 2 /* 3 * CDDL HEADER START 4 * 5 * The contents of this file are subject to the terms of the 6 * Common Development and Distribution License (the "License"). 7 * You may not use this file except in compliance with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or https://opensource.org/licenses/CDDL-1.0. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 23 #ifndef _SYS_FS_ZFS_DELAY_H 24 #define _SYS_FS_ZFS_DELAY_H 25 26 #include <sys/timer.h> 27 28 /* 29 * Generic wrapper to sleep until a given time. 30 */ 31 #define zfs_sleep_until(wakeup) \ 32 do { \ 33 hrtime_t delta = wakeup - gethrtime(); \ 34 \ 35 if (delta > 0) { \ 36 unsigned long delta_us; \ 37 delta_us = delta / (NANOSEC / MICROSEC); \ 38 usleep_range(delta_us, delta_us + 100); \ 39 } \ 40 } while (0) 41 42 #endif /* _SYS_FS_ZFS_DELAY_H */ 43