1 /* $NetBSD: evcnt.h,v 1.11 2024/01/15 18:14:23 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1996, 2000 Christopher G. Demetriou 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed for the 18 * NetBSD Project. See http://www.NetBSD.org/ for 19 * information about NetBSD. 20 * 4. The name of the author may not be used to endorse or promote products 21 * derived from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 * 34 * --(license Id: LICENSE.proto,v 1.1 2000/06/13 21:40:26 cgd Exp )-- 35 */ 36 37 /* 38 * Copyright (c) 1992, 1993 39 * The Regents of the University of California. All rights reserved. 40 * 41 * This software was developed by the Computer Systems Engineering group 42 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 43 * contributed to Berkeley. 44 * 45 * All advertising materials mentioning features or use of this software 46 * must display the following acknowledgement: 47 * This product includes software developed by the University of 48 * California, Lawrence Berkeley Laboratories. 49 * 50 * Redistribution and use in source and binary forms, with or without 51 * modification, are permitted provided that the following conditions 52 * are met: 53 * 1. Redistributions of source code must retain the above copyright 54 * notice, this list of conditions and the following disclaimer. 55 * 2. Redistributions in binary form must reproduce the above copyright 56 * notice, this list of conditions and the following disclaimer in the 57 * documentation and/or other materials provided with the distribution. 58 * 3. Neither the name of the University nor the names of its contributors 59 * may be used to endorse or promote products derived from this software 60 * without specific prior written permission. 61 * 62 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 63 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 64 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 65 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 66 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 67 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 68 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 69 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 70 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 71 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 72 * SUCH DAMAGE. 73 */ 74 75 #ifndef _SYS_EVCNT_H_ 76 #define _SYS_EVCNT_H_ 77 78 #include <sys/queue.h> 79 #include <sys/stdint.h> 80 81 /* 82 * event counters 83 */ 84 85 struct evcnt { 86 union { 87 uint64_t ev_count; /* how many have occurred */ 88 uint32_t ev__count32[2]; 89 }; 90 TAILQ_ENTRY(evcnt) ev_list; /* entry on list of all counters */ 91 unsigned char ev_type; /* counter type; see below */ 92 unsigned char ev_grouplen; /* 'group' len, excluding NUL */ 93 unsigned char ev_namelen; /* 'name' len, excluding NUL */ 94 char ev_pad1; /* reserved (for now); 0 */ 95 const struct evcnt *ev_parent; /* parent, for hierarchical ctrs */ 96 const char *ev_group; /* name of group */ 97 const char *ev_name; /* name of specific event */ 98 }; 99 TAILQ_HEAD(evcntlist, evcnt); 100 101 /* 102 * For 32-bit counters, ev_count32 is the correct half of the 64-bit 103 * counter field. 104 */ 105 #if _BYTE_ORDER == _BIG_ENDIAN 106 #define ev_count32 ev__count32[1] 107 #elif _BYTE_ORDER == _LITTLE_ENDIAN 108 #define ev_count32 ev__count32[0] 109 #endif 110 111 /* maximum group/name lengths, including trailing NUL */ 112 #define EVCNT_STRING_MAX 255 113 114 /* ev_type values */ 115 #define EVCNT_TYPE_ANY -1 /* for sysctl */ 116 #define EVCNT_TYPE_MISC 0 /* miscellaneous; catch all */ 117 #define EVCNT_TYPE_INTR 1 /* interrupt; count with vmstat -i */ 118 #define EVCNT_TYPE_TRAP 2 /* processor trap/exception */ 119 120 #ifdef __HAVE_LEGACY_INTRCNT 121 void evcnt_attach_legacy_intrcnt(void); 122 #endif 123 124 /* 125 * initializer for an event count structure. the lengths are initted and 126 * it is added to the evcnt list at attach time. 127 */ 128 #define EVCNT_INITIALIZER(type, parent, group, name) \ 129 { \ 130 .ev_type = type, \ 131 .ev_parent = parent, \ 132 .ev_group = group, \ 133 .ev_name = name, \ 134 } 135 136 /* 137 * Attach a static event counter. This uses a link set to do the work. 138 * NOTE: "ev" should not be a pointer to the object, but rather a direct 139 * reference to the object itself. 140 */ 141 #define EVCNT_ATTACH_STATIC(ev) __link_set_add_data(evcnts, ev) 142 #define EVCNT_ATTACH_STATIC2(ev, n) __link_set_add_data2(evcnts, ev, n) 143 144 #ifdef _KERNEL 145 146 extern struct evcntlist allevents; /* list of all event counters */ 147 148 void evcnt_init(void); 149 void evcnt_attach_static(struct evcnt *); 150 void evcnt_attach_dynamic_nozero(struct evcnt *, int, const struct evcnt *, 151 const char *, const char *); 152 void evcnt_attach_dynamic(struct evcnt *, int, const struct evcnt *, 153 const char *, const char *); 154 void evcnt_detach(struct evcnt *); 155 #endif /* _KERNEL */ 156 157 #endif /* !_SYS_EVCNT_H_ */ 158
Indexes created Sat Sep 20 22:09:52 GMT 2025