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head/sys/compat/linuxkpi/common/src/linux_hrtimer.c
| Property | Old Value | New Value |
|---|---|---|
| svn:eol-style | null | native \ No newline at end of property |
| svn:keywords | null | FreeBSD=%H \ No newline at end of property |
| svn:mime-type | null | text/plain \ No newline at end of property |
| /*- | |||||
| * Copyright (c) 2017 Mark Johnston <markj@FreeBSD.org> | |||||
| * All rights reserved. | |||||
| * | |||||
| * 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. | |||||
| */ | |||||
| #include <sys/cdefs.h> | |||||
| __FBSDID("$FreeBSD$"); | |||||
| #include <sys/param.h> | |||||
| #include <sys/systm.h> | |||||
| #include <sys/lock.h> | |||||
| #include <sys/mutex.h> | |||||
| #include <sys/time.h> | |||||
| #include <machine/cpu.h> | |||||
| #include <linux/hrtimer.h> | |||||
| /* hrtimer flags */ | |||||
| #define HRTIMER_ACTIVE 0x01 | |||||
| static void | |||||
| hrtimer_call_handler(void *arg) | |||||
| { | |||||
| struct hrtimer *hrtimer; | |||||
| enum hrtimer_restart ret; | |||||
| hrtimer = arg; | |||||
| ret = hrtimer->function(hrtimer); | |||||
| MPASS(ret == HRTIMER_NORESTART); | |||||
| hrtimer->flags &= ~HRTIMER_ACTIVE; | |||||
| } | |||||
| bool | |||||
| linux_hrtimer_active(struct hrtimer *hrtimer) | |||||
| { | |||||
| bool ret; | |||||
| mtx_lock(&hrtimer->mtx); | |||||
| ret = (hrtimer->flags & HRTIMER_ACTIVE) != 0; | |||||
| mtx_unlock(&hrtimer->mtx); | |||||
| return (ret); | |||||
| } | |||||
| int | |||||
| linux_hrtimer_cancel(struct hrtimer *hrtimer) | |||||
| { | |||||
| if (!hrtimer_active(hrtimer)) | |||||
| return (0); | |||||
| (void)callout_drain(&hrtimer->callout); | |||||
| return (1); | |||||
| } | |||||
| void | |||||
| linux_hrtimer_init(struct hrtimer *hrtimer) | |||||
| { | |||||
| hrtimer->function = NULL; | |||||
| hrtimer->flags = 0; | |||||
| mtx_init(&hrtimer->mtx, "hrtimer", NULL, MTX_DEF | MTX_RECURSE); | |||||
| callout_init_mtx(&hrtimer->callout, &hrtimer->mtx, 0); | |||||
| } | |||||
| void | |||||
| linux_hrtimer_set_expires(struct hrtimer *hrtimer __unused, | |||||
| ktime_t time __unused) | |||||
| { | |||||
| } | |||||
| void | |||||
| linux_hrtimer_start(struct hrtimer *hrtimer, ktime_t time) | |||||
| { | |||||
| linux_hrtimer_start_range_ns(hrtimer, time, 0); | |||||
| } | |||||
| void | |||||
| linux_hrtimer_start_range_ns(struct hrtimer *hrtimer, ktime_t time, int64_t nsec) | |||||
| { | |||||
| mtx_lock(&hrtimer->mtx); | |||||
| callout_reset_sbt(&hrtimer->callout, time.tv64 * SBT_1NS, | |||||
| nsec * SBT_1NS, hrtimer_call_handler, hrtimer, 0); | |||||
| hrtimer->flags |= HRTIMER_ACTIVE; | |||||
| mtx_unlock(&hrtimer->mtx); | |||||
| } | |||||