9fc453562f
The poorly named uvm.h is generally supposed to be for uvm-internal users only. - Narrow it to files that actually need it -- mostly files that need to query whether curlwp is the pagedaemon, which should maybe be exposed by an external header. - Use uvm_extern.h where feasible and uvm_*.h for things not exposed by it. We should split up uvm_extern.h but this will serve for now to reduce the uvm.h dependencies. - Use uvm_stat.h and #ifdef UVMHIST uvm.h for files that use UVMHIST(ubchist), since ubchist is declared in uvm.h but the reference evaporates if UVMHIST is not defined, so we reduce header file dependencies. - Make uvm_device.h and uvm_swap.h independently includable while here. ok chs@
89 lines
2.6 KiB
C
89 lines
2.6 KiB
C
/* $NetBSD: uvm_13.c,v 1.3 2020/09/05 16:30:10 riastradh Exp $ */
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/*-
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* Copyright (c) 2018 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Christos Zoulas.
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: uvm_13.c,v 1.3 2020/09/05 16:30:10 riastradh Exp $");
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#if defined(_KERNEL_OPT)
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#include "opt_compat_netbsd.h"
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#endif
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#if defined(_KERNEL) || defined(_MODULE)
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#if defined(_KERNEL_OPT)
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#include "opt_vmswap.h"
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#else
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#define VMSWAP /* XXX */
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#endif
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#endif
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/systm.h>
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#include <sys/syscallargs.h>
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#include <sys/swap.h>
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#include <uvm/uvm_swap.h>
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#include <compat/sys/uvm.h>
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static void
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swapent13_cvt(void *p, const struct swapent *se)
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{
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struct swapent13 *sep13 = p;
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sep13->se13_dev = se->se_dev;
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sep13->se13_flags = se->se_flags;
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sep13->se13_nblks = se->se_nblks;
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sep13->se13_inuse = se->se_inuse;
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sep13->se13_priority = se->se_priority;
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}
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static int
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compat_uvm_swap_stats13(const struct sys_swapctl_args *uap, register_t *retval)
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{
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return uvm_swap_stats(SCARG(uap, arg), SCARG(uap, misc),
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swapent13_cvt, sizeof(struct swapent13), retval);
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}
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void
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uvm_13_init(void)
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{
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uvm_swap_stats13 = compat_uvm_swap_stats13;
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}
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void
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uvm_13_fini(void)
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{
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uvm_swap_stats13 = (void *)enosys;
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}
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