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k_uvm.c
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Editing: k_uvm.c
/* $NetBSD: k_uvm.c,v 1.1 2012/02/17 22:36:50 jmmv Exp $ */ /* * Copyright (c) 2012 The NetBSD Foundation, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include <sys/cdefs.h> __KERNEL_RCSID(0, "$NetBSD: k_uvm.c,v 1.1 2012/02/17 22:36:50 jmmv Exp $"); #include <sys/param.h> #include <sys/kernel.h> #include <sys/module.h> #include <sys/sysctl.h> MODULE(MODULE_CLASS_MISC, k_uvm, NULL); /* --------------------------------------------------------------------- */ /* Sysctl interface to query information about the module. */ /* --------------------------------------------------------------------- */ static struct sysctllog *clogp; static int page_size; #define K_UVM 0x12345678 #define K_UVM_VALUE 0 SYSCTL_SETUP(sysctl_k_uvm_setup, "sysctl k_uvm subtree setup") { sysctl_createv(clog, 0, NULL, NULL, CTLFLAG_PERMANENT, CTLTYPE_NODE, "k_uvm", NULL, NULL, 0, NULL, 0, CTL_VENDOR, K_UVM, CTL_EOL); sysctl_createv(clog, 0, NULL, NULL, CTLFLAG_PERMANENT, CTLTYPE_INT, "page_size", SYSCTL_DESCR("Value of PAGE_SIZE"), NULL, 0, &page_size, 0, CTL_VENDOR, K_UVM, K_UVM_VALUE, CTL_EOL); } /* --------------------------------------------------------------------- */ /* Module management. */ /* --------------------------------------------------------------------- */ static int k_uvm_init(prop_dictionary_t props) { page_size = PAGE_SIZE; sysctl_k_uvm_setup(&clogp); return 0; } static int k_uvm_fini(void *arg) { sysctl_teardown(&clogp); return 0; } static int k_uvm_modcmd(modcmd_t cmd, void *arg) { int ret; switch (cmd) { case MODULE_CMD_INIT: ret = k_uvm_init(arg); break; case MODULE_CMD_FINI: ret = k_uvm_fini(arg); break; case MODULE_CMD_STAT: default: ret = ENOTTY; } return ret; }
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