66 lines
2.1 KiB
C
66 lines
2.1 KiB
C
/* $NetBSD: db_cpu.c,v 1.3 2009/03/09 06:07:05 mrg Exp $ */
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/*-
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* Copyright (c) 2009 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Andrew Doran.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: db_cpu.c,v 1.3 2009/03/09 06:07:05 mrg Exp $");
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#ifndef _KERNEL
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#include <stdbool.h>
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#endif
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#include <sys/param.h>
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#include <sys/cpu.h>
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#include <sys/proc.h>
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#include <ddb/ddb.h>
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static struct cpu_info *head;
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struct cpu_info *
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db_cpu_first(void)
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{
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head = db_read_ptr("cpu_queue");
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return head;
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}
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struct cpu_info *
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db_cpu_next(struct cpu_info *ci)
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{
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db_read_bytes((db_addr_t)&ci->ci_data.cpu_qchain.cqe_next,
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sizeof(ci), (char *)&ci);
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if (ci == head) {
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ci = NULL;
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}
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return ci;
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}
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