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Diffstat (limited to 'include/os/linux/spl/sys/timer.h')
| -rw-r--r-- | include/os/linux/spl/sys/timer.h | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/include/os/linux/spl/sys/timer.h b/include/os/linux/spl/sys/timer.h new file mode 100644 index 000000000..31d89d3b9 --- /dev/null +++ b/include/os/linux/spl/sys/timer.h @@ -0,0 +1,100 @@ +/* + * 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 <[email protected]>. + * 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/delay.h> +#include <linux/sched.h> +#include <linux/time.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) + +/* usleep_range() introduced in 2.6.36 */ +#ifndef HAVE_USLEEP_RANGE +static inline void +usleep_range(unsigned long min, unsigned long max) +{ + unsigned int min_ms = min / USEC_PER_MSEC; + + if (min >= MAX_UDELAY_MS) + msleep(min_ms); + else + udelay(min); +} +#endif /* HAVE_USLEEP_RANGE */ + +#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) + +#ifndef from_timer +#define from_timer(var, timer, timer_field) \ + container_of(timer, typeof(*var), timer_field) +#endif + +#ifdef HAVE_KERNEL_TIMER_FUNCTION_TIMER_LIST +typedef struct timer_list *spl_timer_list_t; +#else +typedef unsigned long spl_timer_list_t; +#endif + +#ifndef HAVE_KERNEL_TIMER_SETUP + +static inline void +timer_setup(struct timer_list *timer, void (*func)(spl_timer_list_t), u32 fl) +{ +#ifdef HAVE_KERNEL_TIMER_LIST_FLAGS + (timer)->flags = fl; +#endif + init_timer(timer); + setup_timer(timer, func, (spl_timer_list_t)(timer)); +} + +#endif /* HAVE_KERNEL_TIMER_SETUP */ + +#endif /* _SPL_TIMER_H */ |