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1 | /* |
2 | * CDDL HEADER START | |
3 | * | |
4 | * The contents of this file are subject to the terms of the | |
5 | * Common Development and Distribution License (the "License"). | |
6 | * You may not use this file except in compliance with the License. | |
7 | * | |
8 | * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
9 | * or http://www.opensolaris.org/os/licensing. | |
10 | * See the License for the specific language governing permissions | |
11 | * and limitations under the License. | |
12 | * | |
13 | * When distributing Covered Code, include this CDDL HEADER in each | |
14 | * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
15 | * If applicable, add the following below this CDDL HEADER, with the | |
16 | * fields enclosed by brackets "[]" replaced with your own identifying | |
17 | * information: Portions Copyright [yyyy] [name of copyright owner] | |
18 | * | |
19 | * CDDL HEADER END | |
20 | */ | |
21 | ||
22 | #ifndef _SYS_FS_ZFS_DELAY_H | |
23 | #define _SYS_FS_ZFS_DELAY_H | |
24 | ||
25 | #include <linux/delay_compat.h> | |
26 | ||
27 | /* | |
28 | * Generic wrapper to sleep until a given time. | |
29 | */ | |
d1d7e268 | 30 | #define zfs_sleep_until(wakeup) \ |
e8b96c60 MA |
31 | do { \ |
32 | hrtime_t delta = wakeup - gethrtime(); \ | |
33 | \ | |
34 | if (delta > 0) { \ | |
35 | unsigned long delta_us; \ | |
36 | delta_us = delta / (NANOSEC / MICROSEC); \ | |
37 | usleep_range(delta_us, delta_us + 100); \ | |
38 | } \ | |
39 | } while (0) | |
40 | ||
41 | #endif /* _SYS_FS_ZFS_DELAY_H */ |