| 1 | /* $NetBSD: evcnt.h,v 1.8 2011/01/29 18:21:22 matt 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 | uint64_t ev_count; /* how many have occurred */ |
| 87 | TAILQ_ENTRY(evcnt) ev_list; /* entry on list of all counters */ |
| 88 | unsigned char ev_type; /* counter type; see below */ |
| 89 | unsigned char ev_grouplen; /* 'group' len, excluding NUL */ |
| 90 | unsigned char ev_namelen; /* 'name' len, excluding NUL */ |
| 91 | char ev_pad1; /* reserved (for now); 0 */ |
| 92 | const struct evcnt *ev_parent; /* parent, for hierarchical ctrs */ |
| 93 | const char *ev_group; /* name of group */ |
| 94 | const char *ev_name; /* name of specific event */ |
| 95 | }; |
| 96 | TAILQ_HEAD(evcntlist, evcnt); |
| 97 | |
| 98 | /* maximum group/name lengths, including trailing NUL */ |
| 99 | #define EVCNT_STRING_MAX 255 |
| 100 | |
| 101 | /* ev_type values */ |
| 102 | #define EVCNT_TYPE_ANY -1 /* for sysctl */ |
| 103 | #define EVCNT_TYPE_MISC 0 /* miscellaneous; catch all */ |
| 104 | #define EVCNT_TYPE_INTR 1 /* interrupt; count with vmstat -i */ |
| 105 | #define EVCNT_TYPE_TRAP 2 /* processor trap/execption */ |
| 106 | |
| 107 | /* |
| 108 | * initializer for an event count structure. the lengths are initted and |
| 109 | * it is added to the evcnt list at attach time. |
| 110 | */ |
| 111 | #define EVCNT_INITIALIZER(type, parent, group, name) \ |
| 112 | { \ |
| 113 | .ev_type = type, \ |
| 114 | .ev_parent = parent, \ |
| 115 | .ev_group = group, \ |
| 116 | .ev_name = name, \ |
| 117 | } |
| 118 | |
| 119 | /* |
| 120 | * Attach a static event counter. This uses a link set to do the work. |
| 121 | * NOTE: "ev" should not be a pointer to the object, but rather a direct |
| 122 | * reference to the object itself. |
| 123 | */ |
| 124 | #define EVCNT_ATTACH_STATIC(ev) __link_set_add_data(evcnts, ev) |
| 125 | #define EVCNT_ATTACH_STATIC2(ev, n) __link_set_add_data2(evcnts, ev, n) |
| 126 | |
| 127 | #ifdef _KERNEL |
| 128 | |
| 129 | extern struct evcntlist allevents; /* list of all event counters */ |
| 130 | |
| 131 | void evcnt_init(void); |
| 132 | void evcnt_attach_static(struct evcnt *); |
| 133 | void evcnt_attach_dynamic_nozero(struct evcnt *, int, const struct evcnt *, |
| 134 | const char *, const char *); |
| 135 | void evcnt_attach_dynamic(struct evcnt *, int, const struct evcnt *, |
| 136 | const char *, const char *); |
| 137 | void evcnt_detach(struct evcnt *); |
| 138 | #endif /* _KERNEL */ |
| 139 | |
| 140 | #endif /* !_SYS_EVCNT_H_ */ |
| 141 | |