NetBSD-5.0.2/sys/kern/subr_evcnt.c
/* $NetBSD: subr_evcnt.c,v 1.4 2005/12/11 12:24:30 christos 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.
*
* from: Header: subr_autoconf.c,v 1.12 93/02/01 19:31:48 torek Exp (LBL)
*
* @(#)subr_autoconf.c 8.3 (Berkeley) 5/17/94
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: subr_evcnt.c,v 1.4 2005/12/11 12:24:30 christos Exp $");
#include "opt_ddb.h"
#include <sys/param.h>
#include <sys/device.h>
#include <sys/systm.h>
/* list of all events */
struct evcntlist allevents = TAILQ_HEAD_INITIALIZER(allevents);
/*
* We need a dummy object to stuff into the evcnt link set to
* ensure that there always is at least one object in the set.
*/
static struct evcnt dummy_static_evcnt;
__link_set_add_bss(evcnts, dummy_static_evcnt);
/*
* Initialize event counters. This does the attach procedure for
* each of the static event counters in the "evcnts" link set.
*/
void
evcnt_init(void)
{
__link_set_decl(evcnts, struct evcnt);
struct evcnt * const *evp;
__link_set_foreach(evp, evcnts) {
if (*evp == &dummy_static_evcnt)
continue;
evcnt_attach_static(*evp);
}
}
/*
* Attach a statically-initialized event. The type and string pointers
* are already set up.
*/
void
evcnt_attach_static(struct evcnt *ev)
{
int len;
len = strlen(ev->ev_group);
#ifdef DIAGNOSTIC
if (len >= EVCNT_STRING_MAX) /* ..._MAX includes NUL */
panic("evcnt_attach_static: group length (%s)", ev->ev_group);
#endif
ev->ev_grouplen = len;
len = strlen(ev->ev_name);
#ifdef DIAGNOSTIC
if (len >= EVCNT_STRING_MAX) /* ..._MAX includes NUL */
panic("evcnt_attach_static: name length (%s)", ev->ev_name);
#endif
ev->ev_namelen = len;
TAILQ_INSERT_TAIL(&allevents, ev, ev_list);
}
/*
* Attach a dynamically-initialized event. Zero it, set up the type
* and string pointers and then act like it was statically initialized.
*/
void
evcnt_attach_dynamic(struct evcnt *ev, int type, const struct evcnt *parent,
const char *group, const char *name)
{
memset(ev, 0, sizeof *ev);
ev->ev_type = type;
ev->ev_parent = parent;
ev->ev_group = group;
ev->ev_name = name;
evcnt_attach_static(ev);
}
/*
* Detach an event.
*/
void
evcnt_detach(struct evcnt *ev)
{
TAILQ_REMOVE(&allevents, ev, ev_list);
}
#ifdef DDB
void
event_print(int full, void (*pr)(const char *, ...))
{
struct evcnt *evp;
TAILQ_FOREACH(evp, &allevents, ev_list) {
if (evp->ev_count == 0 && !full)
continue;
(*pr)("evcnt type %d: %s %s = %lld\n", evp->ev_type,
evp->ev_group, evp->ev_name, evp->ev_count);
}
}
#endif /* DDB */