5e244328ad
Add a new "interleave" allocation policy which stripes pages across domains with a stride or width keeping contiguity within a multi-page region. Move the kernel to the dedicated numbered cpuset #2 making it possible to assign kernel threads and memory policy separately from user. This also eliminates the need for the complicated interrupt binding code. Add a sysctl API for viewing and manipulating domainsets. Refactor some of the cpuset_t manipulation code using the generic bitset type so that it can be used for both. This probably belongs in a dedicated subr file. Attempt to improve the include situation. Reviewed by: kib Discussed with: jhb (cpuset parts) Tested by: pho (before review feedback) Sponsored by: Netflix, Dell/EMC Isilon Differential Revision: https://reviews.freebsd.org/D14839
50 lines
2.0 KiB
C
50 lines
2.0 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2017, Jeffrey Roberson <jeff@freebsd.org>
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* All rights reserved.
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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 unmodified, this list of conditions, and the following
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* 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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef __VM_DOMAINSET_H__
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#define __VM_DOMAINSET_H__
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struct vm_domainset_iter {
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struct domainset *di_domain;
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int *di_iter;
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vm_pindex_t di_offset;
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int di_policy;
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int di_flags;
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int di_n;
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};
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int vm_domainset_iter_page(struct vm_domainset_iter *, int *, int *);
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void vm_domainset_iter_page_init(struct vm_domainset_iter *,
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struct vm_object *, vm_pindex_t, int *, int *);
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int vm_domainset_iter_malloc(struct vm_domainset_iter *, int *, int *);
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void vm_domainset_iter_malloc_init(struct vm_domainset_iter *,
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struct vm_object *, int *, int *);
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#endif /* __VM_DOMAINSET_H__ */
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