85 lines
2.8 KiB
C
85 lines
2.8 KiB
C
/* $NetBSD: uvm_pdpolicy.h,v 1.9 2022/08/20 23:26:02 riastradh Exp $ */
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/*-
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* Copyright (c)2005, 2006 YAMAMOTO Takashi,
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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, this list of conditions and the following 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 AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _UVM_PDPOLICY_H_
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#define _UVM_PDPOLICY_H_
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#include <sys/mutex.h>
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#include <sys/stdint.h>
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#include <uvm/uvm_page.h>
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struct krwlock;
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struct uvm_cpu;
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struct vm_anon;
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struct vm_page;
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/*
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* these API is for uvm internal use only.
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* don't use them directly from outside of /sys/uvm.
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*/
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void uvmpdpol_idle(struct uvm_cpu *);
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void uvmpdpol_init(void);
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void uvmpdpol_init_cpu(struct uvm_cpu *);
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void uvmpdpol_reinit(void);
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void uvmpdpol_estimatepageable(int *, int *);
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bool uvmpdpol_needsscan_p(void);
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void uvmpdpol_pageactivate(struct vm_page *);
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void uvmpdpol_pagedeactivate(struct vm_page *);
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void uvmpdpol_pagedequeue(struct vm_page *);
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void uvmpdpol_pageenqueue(struct vm_page *);
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bool uvmpdpol_pageactivate_p(struct vm_page *);
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bool uvmpdpol_pageisqueued_p(struct vm_page *);
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void uvmpdpol_pagerealize(struct vm_page *);
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void uvmpdpol_anfree(struct vm_anon *);
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void uvmpdpol_tune(void);
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void uvmpdpol_scaninit(void);
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void uvmpdpol_scanfini(void);
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struct vm_page *uvmpdpol_selectvictim(struct krwlock **);
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void uvmpdpol_balancequeue(int);
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void uvmpdpol_sysctlsetup(void);
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/*
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* uvmpdpol_set_intent: set an intended state for the page, taking care not
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* to overwrite any of the other flags.
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*/
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static inline void
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uvmpdpol_set_intent(struct vm_page *pg, uint32_t i)
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{
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KASSERT(mutex_owned(&pg->interlock));
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pg->pqflags = PQ_INTENT_SET | (pg->pqflags & ~PQ_INTENT_MASK) | i;
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}
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#endif /* !_UVM_PDPOLICY_H_ */
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