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LinuxKPI: add devcoredump.h

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Add linux/devcoredump.h with stub implementation of dev_coredumpv()
and dev_coredumpsg() which only free the passed in SG table as needed
for iwlwifi.

Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
Reviewed by:	hselasky
Differential Revision: https://reviews.freebsd.org/D30423
This commit is contained in:
Bjoern A. Zeeb 2021-05-24 18:04:31 +00:00
parent e7a0b68540
commit 29923fea03
1 changed files with 76 additions and 0 deletions
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76
sys/compat/linuxkpi/common/include/linux/devcoredump.h Normal file
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/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2020 The FreeBSD Foundation
*
* This software was developed by Björn Zeeb 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 __LKPI_LINUX_DEVCOREDUMP_H
#define __LKPI_LINUX_DEVCOREDUMP_H
#include <linux/slab.h>
#include <linux/scatterlist.h>
#include <linux/device.h>
static inline void
_lkpi_dev_coredumpsg_free(struct scatterlist *table)
{
struct scatterlist *iter;
struct page *p;
int i;
iter = table;
for_each_sg(table, iter, sg_nents(table), i) {
p = sg_page(iter);
if (p)
__free_page(p);
}
/* XXX what about chained tables? */
kfree(table);
}
static inline void
dev_coredumpv(struct device *dev __unused, void *data, size_t datalen __unused,
gfp_t gfp __unused)
{
/* UNIMPLEMENTED */
vfree(data);
}
static inline void
dev_coredumpsg(struct device *dev __unused, struct scatterlist *table,
size_t datalen __unused, gfp_t gfp __unused)
{
/* UNIMPLEMENTED */
_lkpi_dev_coredumpsg_free(table);
}
#endif /* __LKPI_LINUX_DEVCOREDUMP_H */