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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/sys/vm/vm_domainset.h
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/*-

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 * SPDX-License-Identifier: BSD-2-Clause

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 *

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 * Copyright (c) 2017,	Jeffrey Roberson <[email protected]>

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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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#ifndef __VM_DOMAINSET_H__

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#define __VM_DOMAINSET_H__

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struct pctrie_iter;

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struct vm_domainset_iter {

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	struct domainset	*di_domain;

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	unsigned int		*di_iter;

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	/* Initialized from 'di_domain', initial value after reset. */

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	domainset_t		di_valid_mask;

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	/* Domains to browse in the current phase. */

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	domainset_t		di_remain_mask;

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	/* Domains skipped in phase 1 because under 'v_free_min'. */

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	domainset_t		di_min_mask;

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	vm_pindex_t		di_offset;

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	int			di_flags;

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	uint16_t		di_policy;

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	bool			di_minskip;

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};

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int	vm_domainset_iter_page(struct vm_domainset_iter *, struct vm_object *,

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	    int *, struct pctrie_iter *);

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int	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_policy(struct vm_domainset_iter *, int *);

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int	vm_domainset_iter_policy_init(struct vm_domainset_iter *,

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	    struct domainset *, int *, int *);

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int	vm_domainset_iter_policy_ref_init(struct vm_domainset_iter *,

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	    struct domainset_ref *, int *, int *);

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void	vm_domainset_iter_ignore(struct vm_domainset_iter *, int);

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int	vm_wait_doms(const domainset_t *, int mflags);

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#endif  /* __VM_DOMAINSET_H__ */

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