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/* $NetBSD: evcnt.h,v 1.10 2021/08/03 23:12:14 andvar 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 {
uint64_t ev_count; /* how many have occurred */
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);
/* 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_ */
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