4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2012, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/obdclass/debug.c
34 * Helper routines for dumping data structs for debugging.
37 #define DEBUG_SUBSYSTEM D_OTHER
39 #include <asm/unaligned.h>
41 #include <obd_support.h>
42 #include <lustre_debug.h>
43 #include <lustre_net.h>
45 #define LPDS sizeof(__u64)
46 int block_debug_setup(void *addr, int len, __u64 off, __u64 id)
50 put_unaligned_le64(off, addr);
51 put_unaligned_le64(id, addr + LPDS);
52 addr += len - LPDS - LPDS;
53 put_unaligned_le64(off, addr);
54 put_unaligned_le64(id, addr + LPDS);
58 EXPORT_SYMBOL(block_debug_setup);
60 int block_debug_check(char *who, void *addr, int end, __u64 off, __u64 id)
67 ne_off = le64_to_cpu(off);
69 if (memcmp(addr, (char *)&ne_off, LPDS)) {
70 CDEBUG(D_ERROR, "%s: id %#llx offset %llu off: %#llx != %#llx\n",
71 who, id, off, *(__u64 *)addr, ne_off);
74 if (memcmp(addr + LPDS, (char *)&id, LPDS)) {
75 CDEBUG(D_ERROR, "%s: id %#llx offset %llu id: %#llx != %#llx\n",
76 who, id, off, *(__u64 *)(addr + LPDS), id);
80 addr += end - LPDS - LPDS;
81 if (memcmp(addr, (char *)&ne_off, LPDS)) {
82 CDEBUG(D_ERROR, "%s: id %#llx offset %llu end off: %#llx != %#llx\n",
83 who, id, off, *(__u64 *)addr, ne_off);
86 if (memcmp(addr + LPDS, (char *)&id, LPDS)) {
87 CDEBUG(D_ERROR, "%s: id %#llx offset %llu end id: %#llx != %#llx\n",
88 who, id, off, *(__u64 *)(addr + LPDS), id);
94 EXPORT_SYMBOL(block_debug_check);