/* $NetBSD: evcnt.h,v 1.11 2024/01/15 18:14:23 thorpej Exp $ */ /* * Copyright (c) 1996, 2000 Christopher G. Demetriou * 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed for the * NetBSD Project. See http://www.NetBSD.org/ for * information about NetBSD. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. * * --(license Id: LICENSE.proto,v 1.1 2000/06/13 21:40:26 cgd Exp )-- */ /* * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This software was developed by the Computer Systems Engineering group * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and * contributed to Berkeley. * * All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Lawrence Berkeley Laboratories. * * 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. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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. */ #ifndef _SYS_EVCNT_H_ #define _SYS_EVCNT_H_ #include <sys/queue.h> #include <sys/stdint.h> /* * event counters */ struct evcnt { union { uint64_t ev_count; /* how many have occurred */ uint32_t ev__count32[2]; }; TAILQ_ENTRY(evcnt) ev_list; /* entry on list of all counters */ unsigned char ev_type; /* counter type; see below */ unsigned char ev_grouplen; /* 'group' len, excluding NUL */ unsigned char ev_namelen; /* 'name' len, excluding NUL */ char ev_pad1; /* reserved (for now); 0 */ const struct evcnt *ev_parent; /* parent, for hierarchical ctrs */ const char *ev_group; /* name of group */ const char *ev_name; /* name of specific event */ }; TAILQ_HEAD(evcntlist, evcnt); /* * For 32-bit counters, ev_count32 is the correct half of the 64-bit * counter field. */ #if _BYTE_ORDER == _BIG_ENDIAN #define ev_count32 ev__count32[1] #elif _BYTE_ORDER == _LITTLE_ENDIAN #define ev_count32 ev__count32[0] #endif /* maximum group/name lengths, including trailing NUL */ #define EVCNT_STRING_MAX 255 /* ev_type values */ #define EVCNT_TYPE_ANY -1 /* for sysctl */ #define EVCNT_TYPE_MISC 0 /* miscellaneous; catch all */ #define EVCNT_TYPE_INTR 1 /* interrupt; count with vmstat -i */ #define EVCNT_TYPE_TRAP 2 /* processor trap/exception */ #ifdef __HAVE_LEGACY_INTRCNT void evcnt_attach_legacy_intrcnt(void); #endif /* * initializer for an event count structure. the lengths are initted and * it is added to the evcnt list at attach time. */ #define EVCNT_INITIALIZER(type, parent, group, name) \ { \ .ev_type = type, \ .ev_parent = parent, \ .ev_group = group, \ .ev_name = name, \ } /* * Attach a static event counter. This uses a link set to do the work. * NOTE: "ev" should not be a pointer to the object, but rather a direct * reference to the object itself. */ #define EVCNT_ATTACH_STATIC(ev) __link_set_add_data(evcnts, ev) #define EVCNT_ATTACH_STATIC2(ev, n) __link_set_add_data2(evcnts, ev, n) #ifdef _KERNEL extern struct evcntlist allevents; /* list of all event counters */ void evcnt_init(void); void evcnt_attach_static(struct evcnt *); void evcnt_attach_dynamic_nozero(struct evcnt *, int, const struct evcnt *, const char *, const char *); void evcnt_attach_dynamic(struct evcnt *, int, const struct evcnt *, const char *, const char *); void evcnt_detach(struct evcnt *); #endif /* _KERNEL */ #endif /* !_SYS_EVCNT_H_ */
