141 lines
5.8 KiB
C
141 lines
5.8 KiB
C
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/* $NetBSD: evcnt.h,v 1.8 2011/01/29 18:21:22 matt Exp $ */
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/*
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* Copyright (c) 1996, 2000 Christopher G. Demetriou
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the
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* NetBSD Project. See http://www.NetBSD.org/ for
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* information about NetBSD.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* --(license Id: LICENSE.proto,v 1.1 2000/06/13 21:40:26 cgd Exp )--
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*/
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/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Lawrence Berkeley Laboratories.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _SYS_EVCNT_H_
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#define _SYS_EVCNT_H_
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#include <sys/queue.h>
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#include <sys/stdint.h>
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/*
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* event counters
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*/
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struct evcnt {
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uint64_t ev_count; /* how many have occurred */
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TAILQ_ENTRY(evcnt) ev_list; /* entry on list of all counters */
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unsigned char ev_type; /* counter type; see below */
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unsigned char ev_grouplen; /* 'group' len, excluding NUL */
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unsigned char ev_namelen; /* 'name' len, excluding NUL */
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char ev_pad1; /* reserved (for now); 0 */
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const struct evcnt *ev_parent; /* parent, for hierarchical ctrs */
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const char *ev_group; /* name of group */
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const char *ev_name; /* name of specific event */
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};
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TAILQ_HEAD(evcntlist, evcnt);
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/* maximum group/name lengths, including trailing NUL */
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#define EVCNT_STRING_MAX 255
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/* ev_type values */
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#define EVCNT_TYPE_ANY -1 /* for sysctl */
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#define EVCNT_TYPE_MISC 0 /* miscellaneous; catch all */
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#define EVCNT_TYPE_INTR 1 /* interrupt; count with vmstat -i */
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#define EVCNT_TYPE_TRAP 2 /* processor trap/execption */
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/*
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* initializer for an event count structure. the lengths are initted and
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* it is added to the evcnt list at attach time.
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*/
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#define EVCNT_INITIALIZER(type, parent, group, name) \
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{ \
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.ev_type = type, \
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.ev_parent = parent, \
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.ev_group = group, \
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.ev_name = name, \
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}
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/*
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* Attach a static event counter. This uses a link set to do the work.
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* NOTE: "ev" should not be a pointer to the object, but rather a direct
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* reference to the object itself.
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*/
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#define EVCNT_ATTACH_STATIC(ev) __link_set_add_data(evcnts, ev)
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#define EVCNT_ATTACH_STATIC2(ev, n) __link_set_add_data2(evcnts, ev, n)
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#ifdef _KERNEL
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extern struct evcntlist allevents; /* list of all event counters */
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void evcnt_init(void);
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void evcnt_attach_static(struct evcnt *);
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void evcnt_attach_dynamic_nozero(struct evcnt *, int, const struct evcnt *,
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const char *, const char *);
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void evcnt_attach_dynamic(struct evcnt *, int, const struct evcnt *,
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const char *, const char *);
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void evcnt_detach(struct evcnt *);
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#endif /* _KERNEL */
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#endif /* !_SYS_EVCNT_H_ */
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