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864b11007a
irq_work_sync() performs draining of irq_work task. Required by drm-kmod. Reviewed by: hselasky MFC after: 2 weeks Differential revision: https://reviews.freebsd.org/D30818
73 lines
2.3 KiB
C
73 lines
2.3 KiB
C
/*-
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* Copyright (c) 2020 The FreeBSD Foundation
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*
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* This software was developed by Emmanuel Vadot under sponsorship
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* from the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef __LINUX_IRQ_WORK_H__
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#define __LINUX_IRQ_WORK_H__
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#include <sys/param.h>
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#include <sys/taskqueue.h>
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struct irq_work;
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typedef void (*irq_work_func_t)(struct irq_work *);
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struct irq_work {
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struct task irq_task;
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irq_work_func_t func;
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};
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extern struct taskqueue *linux_irq_work_tq;
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#define DEFINE_IRQ_WORK(name, _func) struct irq_work name = { \
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.irq_task = TASK_INITIALIZER(0, linux_irq_work_fn, &(name)), \
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.func = (_func), \
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}
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void linux_irq_work_fn(void *, int);
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static inline void
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init_irq_work(struct irq_work *irqw, irq_work_func_t func)
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{
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TASK_INIT(&irqw->irq_task, 0, linux_irq_work_fn, irqw);
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irqw->func = func;
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}
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static inline void
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irq_work_queue(struct irq_work *irqw)
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{
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taskqueue_enqueue(linux_irq_work_tq, &irqw->irq_task);
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}
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static inline void
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irq_work_sync(struct irq_work *irqw)
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{
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taskqueue_drain(linux_irq_work_tq, &irqw->irq_task);
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}
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#endif /* __LINUX_IRQ_WORK_H__ */
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