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abd_os: break out platform-specific header parts

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Removing the platform #ifdefs from shared headers in favour of
per-platform headers. Makes abd_t much leaner, among other things.

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #16253
This commit is contained in:
Rob Norris
2024-04-01 15:37:34 +11:00
committed by Brian Behlendorf
parent 7a5b4355e2
commit 5b9e695392
14 changed files with 294 additions and 48 deletions
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include/os/linux/Makefile.am
+2
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@@ -20,6 +20,8 @@ kernel_linux_HEADERS = \
kernel_sysdir = $(kerneldir)/sys
kernel_sys_HEADERS = \
%D%/zfs/sys/abd_os.h \
%D%/zfs/sys/abd_impl_os.h \
%D%/zfs/sys/policy.h \
%D%/zfs/sys/trace_acl.h \
%D%/zfs/sys/trace_arc.h \
include/os/linux/zfs/sys/abd_impl_os.h
+41
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@@ -0,0 +1,41 @@
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or https://opensource.org/licenses/CDDL-1.0.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2014 by Chunwei Chen. All rights reserved.
* Copyright (c) 2016, 2019 by Delphix. All rights reserved.
* Copyright (c) 2023, 2024, Klara Inc.
*/
#ifndef _ABD_IMPL_OS_H
#define _ABD_IMPL_OS_H
#ifdef __cplusplus
extern "C" {
#endif
#define abd_enter_critical(flags) local_irq_save(flags)
#define abd_exit_critical(flags) local_irq_restore(flags)
#ifdef __cplusplus
}
#endif
#endif /* _ABD_IMPL_OS_H */
include/os/linux/zfs/sys/abd_os.h
+62
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@@ -0,0 +1,62 @@
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or https://opensource.org/licenses/CDDL-1.0.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2014 by Chunwei Chen. All rights reserved.
* Copyright (c) 2016, 2019 by Delphix. All rights reserved.
*/
#ifndef _ABD_OS_H
#define _ABD_OS_H
#ifdef __cplusplus
extern "C" {
#endif
struct abd_scatter {
uint_t abd_offset;
uint_t abd_nents;
struct scatterlist *abd_sgl;
};
struct abd_linear {
void *abd_buf;
struct scatterlist *abd_sgl; /* for LINEAR_PAGE */
};
typedef struct abd abd_t;
typedef int abd_iter_page_func_t(struct page *, size_t, size_t, void *);
int abd_iterate_page_func(abd_t *, size_t, size_t, abd_iter_page_func_t *,
void *);
/*
* Linux ABD bio functions
* Note: these are only needed to support vdev_classic. See comment in
* vdev_disk.c.
*/
unsigned int abd_bio_map_off(struct bio *, abd_t *, unsigned int, size_t);
unsigned long abd_nr_pages_off(abd_t *, unsigned int, size_t);
#ifdef __cplusplus
}
#endif
#endif /* _ABD_H */