1 /* $NetBSD: kstat.c,v 1.1 2009/08/07 20:57:57 haad Exp $ */ 2 3 /*- 4 * Copyright (c) 2009 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Andrew Doran. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /*- 33 * Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.org> 34 * All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 45 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 46 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 47 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 48 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 49 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 50 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 51 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 52 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 53 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 54 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 55 * SUCH DAMAGE. 56 */ 57 58 #include <sys/param.h> 59 #include <sys/kernel.h> 60 #include <sys/systm.h> 61 #include <sys/kmem.h> 62 #include <sys/sysctl.h> 63 #include <sys/kstat.h> 64 65 kstat_t * 66 kstat_create(char *module, int instance, char *name, char *class, uchar_t type, 67 ulong_t ndata, uchar_t flags) 68 { 69 struct sysctl_oid *root; 70 const struct sysctlnode *rnode, *mnode, *cnode; 71 kstat_t *ks; 72 73 KASSERT(instance == 0); 74 KASSERT(type == KSTAT_TYPE_NAMED); 75 KASSERT(flags == KSTAT_FLAG_VIRTUAL); 76 77 ks = kmem_zalloc(sizeof(*ks), KM_SLEEP); 78 ks->ks_ndata = ndata; 79 80 sysctl_createv(&ks->ks_clog, 0, NULL, &rnode, 81 CTLFLAG_PERMANENT, 82 CTLTYPE_NODE, "kstat", NULL, 83 NULL, 0, NULL, 0, 84 CTL_CREATE, CTL_EOL); 85 sysctl_createv(&ks->ks_clog, 0, &rnode, &mnode, 86 CTLFLAG_PERMANENT, 87 CTLTYPE_NODE, module, NULL, 88 NULL, 0, NULL, 0, 89 CTL_CREATE, CTL_EOL); 90 sysctl_createv(&ks->ks_clog, 0, &mnode, &cnode, 91 CTLFLAG_PERMANENT, 92 CTLTYPE_NODE, class, NULL, 93 NULL, 0, NULL, 0, 94 CTL_CREATE, CTL_EOL); 95 sysctl_createv(&ks->ks_clog, 0, &cnode, &ks->ks_node, 96 CTLFLAG_PERMANENT, 97 CTLTYPE_NODE, name, NULL, 98 NULL, 0, NULL, 0, 99 CTL_CREATE, CTL_EOL); 100 101 return (ks); 102 } 103 104 void 105 kstat_install(kstat_t *ks) 106 { 107 kstat_named_t *ksent; 108 u_int i; 109 110 ksent = ks->ks_data; 111 112 for (i = 0; i < ks->ks_ndata; i++, ksent++) { 113 KASSERT(ksent->data_type == KSTAT_DATA_UINT64); 114 sysctl_createv(&ks->ks_clog, 0, &ks->ks_node, NULL, 115 CTLFLAG_PERMANENT | CTLFLAG_READONLY, 116 CTLTYPE_INT, ksent->name, NULL, 117 NULL, 0, &ksent->value.ui64, 0, 118 CTL_CREATE, CTL_EOL); 119 } 120 } 121 122 void 123 kstat_delete(kstat_t *ks) 124 { 125 126 sysctl_teardown(&ks->ks_clog); 127 kmem_free(ks, sizeof(*ks)); 128 } 129