freebsd-dev/sys/compat/linuxkpi/common/include/linux/hrtimer.h
Hans Petter Selasky 0a85496223 Improve high resolution timer support in the LinuxKPI.
Submitted by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
Sponsored by:	Limelight Networks
2018-06-01 11:33:14 +00:00

90 lines
3.0 KiB
C

/*-
* Copyright (c) 2017 Mark Johnston <markj@FreeBSD.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _LINUX_HRTIMER_H_
#define _LINUX_HRTIMER_H_
#include <sys/_callout.h>
#include <sys/_mutex.h>
#include <linux/ktime.h>
#include <linux/timer.h>
enum hrtimer_mode {
HRTIMER_MODE_REL,
HRTIMER_MODE_REL_PINNED = HRTIMER_MODE_REL,
};
enum hrtimer_restart {
HRTIMER_RESTART,
HRTIMER_NORESTART,
};
struct hrtimer {
enum hrtimer_restart (*function)(struct hrtimer *);
struct mtx mtx;
struct callout callout;
s64 expires; /* relative time in nanoseconds */
s64 precision; /* in nanoseconds */
};
#define hrtimer_active(hrtimer) linux_hrtimer_active(hrtimer)
#define hrtimer_cancel(hrtimer) linux_hrtimer_cancel(hrtimer)
#define hrtimer_init(hrtimer, clock, mode) do { \
CTASSERT((clock) == CLOCK_MONOTONIC); \
CTASSERT((mode) == HRTIMER_MODE_REL); \
linux_hrtimer_init(hrtimer); \
} while (0)
#define hrtimer_set_expires(hrtimer, time) \
linux_hrtimer_set_expires(hrtimer, time)
#define hrtimer_start(hrtimer, time, mode) do { \
CTASSERT((mode) == HRTIMER_MODE_REL); \
linux_hrtimer_start(hrtimer, time); \
} while (0)
#define hrtimer_start_range_ns(hrtimer, time, prec, mode) do { \
CTASSERT((mode) == HRTIMER_MODE_REL); \
linux_hrtimer_start_range_ns(hrtimer, time, prec); \
} while (0)
#define hrtimer_forward_now(hrtimer, interval) do { \
linux_hrtimer_forward_now(hrtimer, interval); \
} while (0)
bool linux_hrtimer_active(struct hrtimer *);
int linux_hrtimer_cancel(struct hrtimer *);
void linux_hrtimer_init(struct hrtimer *);
void linux_hrtimer_set_expires(struct hrtimer *, ktime_t);
void linux_hrtimer_start(struct hrtimer *, ktime_t);
void linux_hrtimer_start_range_ns(struct hrtimer *, ktime_t, int64_t);
void linux_hrtimer_forward_now(struct hrtimer *, ktime_t);
#endif /* _LINUX_HRTIMER_H_ */