mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2024-12-27 11:29:36 +03:00
545e9ac00a
When comparing times gotten from ddi_get_lbolt, we have to take account of wrap around of jiffies. Therefore, we cannot use 't1 < t2'. Instead we should use 't1 - t2 < 0'. This patch add ddi_time_after and friends to address this issue. They have strict type restriction, clock_t for vanilla and int64_t for 64 version, to prevent type conversion from screwing things. Signed-off-by: Chunwei Chen <tuxoko@gmail.com> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #335
61 lines
2.3 KiB
C
61 lines
2.3 KiB
C
/*****************************************************************************\
|
|
* Copyright (C) 2007-2010 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_TIMER_H
|
|
#define _SPL_TIMER_H
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/timer.h>
|
|
|
|
#define lbolt ((clock_t)jiffies)
|
|
#define lbolt64 ((int64_t)get_jiffies_64())
|
|
|
|
#define ddi_get_lbolt() ((clock_t)jiffies)
|
|
#define ddi_get_lbolt64() ((int64_t)get_jiffies_64())
|
|
|
|
#define ddi_time_before(a, b) (typecheck(clock_t, a) && \
|
|
typecheck(clock_t, b) && \
|
|
((a) - (b) < 0))
|
|
#define ddi_time_after(a, b) ddi_time_before(b, a)
|
|
#define ddi_time_before_eq(a, b) (!ddi_time_after(a, b))
|
|
#define ddi_time_after_eq(a, b) ddi_time_before_eq(b, a)
|
|
|
|
#define ddi_time_before64(a, b) (typecheck(int64_t, a) && \
|
|
typecheck(int64_t, b) && \
|
|
((a) - (b) < 0))
|
|
#define ddi_time_after64(a, b) ddi_time_before64(b, a)
|
|
#define ddi_time_before_eq64(a, b) (!ddi_time_after64(a, b))
|
|
#define ddi_time_after_eq64(a, b) ddi_time_before_eq64(b, a)
|
|
|
|
#define delay(ticks) schedule_timeout_uninterruptible(ticks)
|
|
|
|
#define SEC_TO_TICK(sec) ((sec) * HZ)
|
|
#define MSEC_TO_TICK(ms) msecs_to_jiffies(ms)
|
|
#define USEC_TO_TICK(us) usecs_to_jiffies(us)
|
|
#define NSEC_TO_TICK(ns) usecs_to_jiffies(ns / NSEC_PER_USEC)
|
|
|
|
#endif /* _SPL_TIMER_H */
|
|
|