4c29d2de67
Before this change we had two flavours of vm_domainset iterators: "page" and "malloc". The latter was only used for kmem_*() and hard-coded its behaviour based on kernel_object's policy. Moreover, its use contained a race similar to that fixed by r338755 since the kernel_object's iterator was being run without the object lock. In some cases it is useful to be able to explicitly specify a policy (domainset) or policy+iterator (domainset_ref) when performing memory allocations. To that end, refactor the vm_dominset_* KPI to permit this, and get rid of the "malloc" domainset_iter KPI in the process. Reviewed by: jeff (previous version) Tested by: pho (part of a larger patch) MFC after: 2 weeks Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D17417
56 lines
2.2 KiB
C
56 lines
2.2 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
*
|
|
* Copyright (c) 2017, Jeffrey Roberson <jeff@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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
#ifndef __VM_DOMAINSET_H__
|
|
#define __VM_DOMAINSET_H__
|
|
|
|
struct vm_domainset_iter {
|
|
struct domainset *di_domain;
|
|
unsigned int *di_iter;
|
|
vm_pindex_t di_offset;
|
|
int di_flags;
|
|
uint16_t di_policy;
|
|
domainid_t di_n;
|
|
bool di_minskip;
|
|
};
|
|
|
|
int vm_domainset_iter_page(struct vm_domainset_iter *, struct vm_object *,
|
|
int *);
|
|
void vm_domainset_iter_page_init(struct vm_domainset_iter *,
|
|
struct vm_object *, vm_pindex_t, int *, int *);
|
|
int vm_domainset_iter_policy(struct vm_domainset_iter *, int *);
|
|
void vm_domainset_iter_policy_init(struct vm_domainset_iter *,
|
|
struct domainset *, int *, int *);
|
|
void vm_domainset_iter_policy_ref_init(struct vm_domainset_iter *,
|
|
struct domainset_ref *, int *, int *);
|
|
|
|
void vm_wait_doms(const domainset_t *);
|
|
|
|
#endif /* __VM_DOMAINSET_H__ */
|