152419Sjulian/* $NetBSD: k_uvm.c,v 1.1 2012/02/17 22:36:50 jmmv Exp $ */ 252419Sjulian/* 352419Sjulian * Copyright (c) 2012 The NetBSD Foundation, Inc. 452419Sjulian * All rights reserved. 552419Sjulian * 652419Sjulian * Redistribution and use in source and binary forms, with or without 770784Sjulian * modification, are permitted provided that the following conditions 852419Sjulian * are met: 952419Sjulian * 1. Redistributions of source code must retain the above copyright 1052419Sjulian * notice, this list of conditions and the following disclaimer. 1152419Sjulian * 2. Redistributions in binary form must reproduce the above copyright 1252419Sjulian * notice, this list of conditions and the following disclaimer in the 1352419Sjulian * documentation and/or other materials provided with the distribution. 1452419Sjulian * 1552419Sjulian * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND 1652419Sjulian * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 1752419Sjulian * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 1870784Sjulian * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 1952419Sjulian * IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY 2052419Sjulian * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2152419Sjulian * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE 2252419Sjulian * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 2352419Sjulian * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 2452419Sjulian * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 2552419Sjulian * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 2652419Sjulian * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2752419Sjulian */ 2852419Sjulian 2952419Sjulian#include <sys/cdefs.h> 3052419Sjulian__KERNEL_RCSID(0, "$NetBSD: k_uvm.c,v 1.1 2012/02/17 22:36:50 jmmv Exp $"); 3152419Sjulian 3252419Sjulian#include <sys/param.h> 3352419Sjulian#include <sys/kernel.h> 3452419Sjulian#include <sys/module.h> 3552419Sjulian#include <sys/sysctl.h> 3652419Sjulian 3767506SjulianMODULE(MODULE_CLASS_MISC, k_uvm, NULL); 3852419Sjulian 3952419Sjulian/* --------------------------------------------------------------------- */ 4052752Sjulian/* Sysctl interface to query information about the module. */ 4152419Sjulian/* --------------------------------------------------------------------- */ 4252419Sjulian 4352419Sjulianstatic struct sysctllog *clogp; 4452419Sjulianstatic int page_size; 4552419Sjulian 4652419Sjulian#define K_UVM 0x12345678 4752419Sjulian#define K_UVM_VALUE 0 4852419Sjulian 4952419SjulianSYSCTL_SETUP(sysctl_k_uvm_setup, "sysctl k_uvm subtree setup") 5052419Sjulian{ 5152419Sjulian 5252419Sjulian sysctl_createv(clog, 0, NULL, NULL, 5352419Sjulian CTLFLAG_PERMANENT, 5452419Sjulian CTLTYPE_NODE, "k_uvm", NULL, 5552419Sjulian NULL, 0, NULL, 0, 5652419Sjulian CTL_VENDOR, K_UVM, CTL_EOL); 5752419Sjulian 5852419Sjulian sysctl_createv(clog, 0, NULL, NULL, 5952419Sjulian CTLFLAG_PERMANENT, 6052419Sjulian CTLTYPE_INT, "page_size", 6152419Sjulian SYSCTL_DESCR("Value of PAGE_SIZE"), 6252419Sjulian NULL, 0, &page_size, 0, 6352419Sjulian CTL_VENDOR, K_UVM, K_UVM_VALUE, CTL_EOL); 6452419Sjulian} 6552419Sjulian 6652419Sjulian/* --------------------------------------------------------------------- */ 6752419Sjulian/* Module management. */ 6852419Sjulian/* --------------------------------------------------------------------- */ 6952919Sjulian 7052419Sjulianstatic 7152419Sjulianint 7270870Sjuliank_uvm_init(prop_dictionary_t props) 7370870Sjulian{ 7470870Sjulian 7570870Sjulian page_size = PAGE_SIZE; 7670870Sjulian 7770870Sjulian sysctl_k_uvm_setup(&clogp); 7870870Sjulian 7970870Sjulian return 0; 8052419Sjulian} 8152419Sjulian 8252419Sjulianstatic 8352419Sjulianint 8452419Sjuliank_uvm_fini(void *arg) 8552419Sjulian{ 8652419Sjulian 8752419Sjulian sysctl_teardown(&clogp); 8852419Sjulian 8952419Sjulian return 0; 9052419Sjulian} 9152419Sjulian 9252419Sjulianstatic 9352419Sjulianint 9452419Sjuliank_uvm_modcmd(modcmd_t cmd, void *arg) 9552419Sjulian{ 9652419Sjulian int ret; 9752419Sjulian 9852419Sjulian switch (cmd) { 9952419Sjulian case MODULE_CMD_INIT: 10052419Sjulian ret = k_uvm_init(arg); 10152419Sjulian break; 10252419Sjulian 10352419Sjulian case MODULE_CMD_FINI: 10452419Sjulian ret = k_uvm_fini(arg); 10552419Sjulian break; 10652419Sjulian 10752752Sjulian case MODULE_CMD_STAT: 10852752Sjulian default: 10970700Sjulian ret = ENOTTY; 11052752Sjulian } 11172053Sjulian 11252752Sjulian return ret; 11352885Sjulian} 11452419Sjulian