57 lines
2.0 KiB
C
57 lines
2.0 KiB
C
/* $OpenBSD: evcount.h,v 1.4 2022/11/10 07:05:41 jmatthew Exp $ */
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/*
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* Copyright (c) 2004 Artur Grabowski <art@openbsd.org>
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* Copyright (c) 2004 Aaron Campbell <aaron@openbsd.org>
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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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*
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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. 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 ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __SYS_EVCOUNT_H__
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#define __SYS_EVCOUNT_H__
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#ifdef _KERNEL
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#include <sys/queue.h>
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struct cpumem;
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struct evcount {
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u_int64_t ec_count; /* main counter */
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int ec_id; /* counter ID */
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const char *ec_name; /* counter name */
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void *ec_data; /* user data */
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struct cpumem *ec_percpu; /* per-cpu counter */
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TAILQ_ENTRY(evcount) next;
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};
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void evcount_attach(struct evcount *, const char *, void *);
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void evcount_detach(struct evcount *);
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void evcount_inc(struct evcount *);
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void evcount_init_percpu(void);
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void evcount_percpu(struct evcount *);
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int evcount_sysctl(int *, u_int, void *, size_t *, void *, size_t);
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#endif /* _KERNEL */
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#endif
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