db_cpu.c revision 1.3.2.2
1 1.3.2.2 skrll /* $NetBSD: db_cpu.c,v 1.3.2.2 2009/04/28 07:35:12 skrll Exp $ */ 2 1.3.2.2 skrll 3 1.3.2.2 skrll /*- 4 1.3.2.2 skrll * Copyright (c) 2009 The NetBSD Foundation, Inc. 5 1.3.2.2 skrll * All rights reserved. 6 1.3.2.2 skrll * 7 1.3.2.2 skrll * This code is derived from software contributed to The NetBSD Foundation 8 1.3.2.2 skrll * by Andrew Doran. 9 1.3.2.2 skrll * 10 1.3.2.2 skrll * Redistribution and use in source and binary forms, with or without 11 1.3.2.2 skrll * modification, are permitted provided that the following conditions 12 1.3.2.2 skrll * are met: 13 1.3.2.2 skrll * 1. Redistributions of source code must retain the above copyright 14 1.3.2.2 skrll * notice, this list of conditions and the following disclaimer. 15 1.3.2.2 skrll * 2. Redistributions in binary form must reproduce the above copyright 16 1.3.2.2 skrll * notice, this list of conditions and the following disclaimer in the 17 1.3.2.2 skrll * documentation and/or other materials provided with the distribution. 18 1.3.2.2 skrll * 19 1.3.2.2 skrll * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.3.2.2 skrll * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.3.2.2 skrll * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.3.2.2 skrll * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.3.2.2 skrll * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.3.2.2 skrll * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.3.2.2 skrll * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.3.2.2 skrll * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.3.2.2 skrll * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.3.2.2 skrll * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.3.2.2 skrll * POSSIBILITY OF SUCH DAMAGE. 30 1.3.2.2 skrll */ 31 1.3.2.2 skrll 32 1.3.2.2 skrll #include <sys/cdefs.h> 33 1.3.2.2 skrll __KERNEL_RCSID(0, "$NetBSD: db_cpu.c,v 1.3.2.2 2009/04/28 07:35:12 skrll Exp $"); 34 1.3.2.2 skrll 35 1.3.2.2 skrll #ifndef _KERNEL 36 1.3.2.2 skrll #include <stdbool.h> 37 1.3.2.2 skrll #endif 38 1.3.2.2 skrll 39 1.3.2.2 skrll #include <sys/param.h> 40 1.3.2.2 skrll #include <sys/cpu.h> 41 1.3.2.2 skrll #include <sys/proc.h> 42 1.3.2.2 skrll 43 1.3.2.2 skrll #include <ddb/ddb.h> 44 1.3.2.2 skrll 45 1.3.2.2 skrll static struct cpu_info *head; 46 1.3.2.2 skrll 47 1.3.2.2 skrll struct cpu_info * 48 1.3.2.2 skrll db_cpu_first(void) 49 1.3.2.2 skrll { 50 1.3.2.2 skrll 51 1.3.2.2 skrll head = db_read_ptr("cpu_queue"); 52 1.3.2.2 skrll return head; 53 1.3.2.2 skrll } 54 1.3.2.2 skrll 55 1.3.2.2 skrll struct cpu_info * 56 1.3.2.2 skrll db_cpu_next(struct cpu_info *ci) 57 1.3.2.2 skrll { 58 1.3.2.2 skrll 59 1.3.2.2 skrll db_read_bytes((db_addr_t)&ci->ci_data.cpu_qchain.cqe_next, 60 1.3.2.2 skrll sizeof(ci), (char *)&ci); 61 1.3.2.2 skrll if (ci == head) { 62 1.3.2.2 skrll ci = NULL; 63 1.3.2.2 skrll } 64 1.3.2.2 skrll return ci; 65 1.3.2.2 skrll } 66
Indexes created Sun Sep 21 20:09:37 GMT 2025