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linuxkpi: Add irq_work.h

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Since handlers are call in a thread context we can simply use a workqueue
to emulate those functions.
The DRM code was patched to do that already, having it in linuxkpi allows us
to not patch the upstream code.

Sponsored-by: The FreeBSD Foundation
Reviewed by:	hselasky
Differential Revision:	https://reviews.freebsd.org/D24859
This commit is contained in:
Emmanuel Vadot 2020-05-19 09:04:35 +00:00
parent 5e30a739c7
commit eda697d2ef
1 changed files with 52 additions and 0 deletions
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52
sys/compat/linuxkpi/common/include/linux/irq_work.h Normal file
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/*-
* Copyright (c) 2020 The FreeBSD Foundation
*
* This software was developed by Emmanuel Vadot under sponsorship
* from the FreeBSD Foundation.
*
* 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, 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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_IRQ_WORK_H__
#define __LINUX_IRQ_WORK_H__
#include <linux/workqueue.h>
struct irq_work {
struct work_struct work;
};
static inline void
init_irq_work(struct irq_work *irqw, void (*func)(struct irq_work *))
{
INIT_WORK(&irqw->work, (work_func_t)func);
}
static inline void
irq_work_queue(struct irq_work *irqw)
{
schedule_work(&irqw->work);
}
#endif /* __LINUX_IRQ_WORK_H__ */