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8b8b44d06f
In `config/kernel-timer.m4` refactor slightly to check more generally
for the new `timer_setup()` APIs, but also check the callback signature
because some kernels (notably 4.14) have the new `timer_setup()` API but
use the old callback signature. Also add a check for a `flags` member in
`struct timer_list`, which was added in 4.1-rc8.
Add compatibility shims to `include/spl/sys/timer.h` to allow using the
new timer APIs with the only two caveats being that the callback
argument type must be declared as `spl_timer_list_t` and an explicit
assignment is required to get the timer variable for the `timer_of()`
macro. So the callback would look like this:
```c
__cv_wakeup(spl_timer_list_t t)
{
struct timer_list *tmr = (struct timer_list *)t;
struct thing *parent = from_timer(parent, tmr,
parent_timer_field);
... /* do stuff with parent */
```
Make some minor changes to `spl-condvar.c` and `spl-taskq.c` to use the
new timer APIs instead of conditional code.
Reviewed-by: Tomohiro Kusumi <kusumi.tomohiro@gmail.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
Closes #8647
101 lines
3.1 KiB
C
101 lines
3.1 KiB
C
/*
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* Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
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* Copyright (C) 2007 The Regents of the University of California.
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* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
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* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
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* UCRL-CODE-235197
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*
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* This file is part of the SPL, Solaris Porting Layer.
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* For details, see <http://zfsonlinux.org/>.
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*
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* The SPL is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* The SPL is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with the SPL. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _SPL_TIMER_H
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#define _SPL_TIMER_H
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#include <linux/module.h>
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#include <linux/delay.h>
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#include <linux/sched.h>
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#include <linux/time.h>
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#include <linux/timer.h>
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#define lbolt ((clock_t)jiffies)
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#define lbolt64 ((int64_t)get_jiffies_64())
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#define ddi_get_lbolt() ((clock_t)jiffies)
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#define ddi_get_lbolt64() ((int64_t)get_jiffies_64())
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#define ddi_time_before(a, b) (typecheck(clock_t, a) && \
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typecheck(clock_t, b) && \
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((a) - (b) < 0))
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#define ddi_time_after(a, b) ddi_time_before(b, a)
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#define ddi_time_before_eq(a, b) (!ddi_time_after(a, b))
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#define ddi_time_after_eq(a, b) ddi_time_before_eq(b, a)
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#define ddi_time_before64(a, b) (typecheck(int64_t, a) && \
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typecheck(int64_t, b) && \
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((a) - (b) < 0))
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#define ddi_time_after64(a, b) ddi_time_before64(b, a)
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#define ddi_time_before_eq64(a, b) (!ddi_time_after64(a, b))
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#define ddi_time_after_eq64(a, b) ddi_time_before_eq64(b, a)
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#define delay(ticks) schedule_timeout_uninterruptible(ticks)
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/* usleep_range() introduced in 2.6.36 */
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#ifndef HAVE_USLEEP_RANGE
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static inline void
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usleep_range(unsigned long min, unsigned long max)
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{
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unsigned int min_ms = min / USEC_PER_MSEC;
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if (min >= MAX_UDELAY_MS)
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msleep(min_ms);
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else
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udelay(min);
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}
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#endif /* HAVE_USLEEP_RANGE */
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#define SEC_TO_TICK(sec) ((sec) * HZ)
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#define MSEC_TO_TICK(ms) msecs_to_jiffies(ms)
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#define USEC_TO_TICK(us) usecs_to_jiffies(us)
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#define NSEC_TO_TICK(ns) usecs_to_jiffies(ns / NSEC_PER_USEC)
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#ifndef from_timer
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#define from_timer(var, timer, timer_field) \
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container_of(timer, typeof(*var), timer_field)
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#endif
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#ifdef HAVE_KERNEL_TIMER_FUNCTION_TIMER_LIST
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typedef struct timer_list *spl_timer_list_t;
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#else
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typedef unsigned long spl_timer_list_t;
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#endif
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#ifndef HAVE_KERNEL_TIMER_SETUP
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static inline void
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timer_setup(struct timer_list *timer, void (*func)(spl_timer_list_t), u32 fl)
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{
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#ifdef HAVE_KERNEL_TIMER_LIST_FLAGS
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(timer)->flags = fl;
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#endif
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init_timer(timer);
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setup_timer(timer, func, (spl_timer_list_t)(timer));
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}
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#endif /* HAVE_KERNEL_TIMER_SETUP */
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#endif /* _SPL_TIMER_H */
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