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.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2012, 2014, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/obdclass/debug.c
38 * Helper routines for dumping data structs for debugging.
41 #define DEBUG_SUBSYSTEM D_OTHER
44 #include <obd_support.h>
45 #include <lustre_debug.h>
46 #include <lustre_net.h>
48 void dump_lniobuf(struct niobuf_local *nb)
51 "niobuf_local: file_offset=%lld, len=%d, page=%p, rc=%d\n",
52 nb->lnb_file_offset, nb->lnb_len, nb->lnb_page, nb->lnb_rc);
53 CDEBUG(D_RPCTRACE, "nb->page: index = %ld\n",
54 nb->lnb_page ? page_index(nb->lnb_page) : -1);
57 #define LPDS sizeof(__u64)
58 int block_debug_setup(void *addr, int len, __u64 off, __u64 id)
62 off = cpu_to_le64 (off);
63 id = cpu_to_le64 (id);
64 memcpy(addr, (char *)&off, LPDS);
65 memcpy(addr + LPDS, (char *)&id, LPDS);
67 addr += len - LPDS - LPDS;
68 memcpy(addr, (char *)&off, LPDS);
69 memcpy(addr + LPDS, (char *)&id, LPDS);
73 EXPORT_SYMBOL(block_debug_setup);
75 int block_debug_check(char *who, void *addr, int end, __u64 off, __u64 id)
82 ne_off = le64_to_cpu (off);
83 id = le64_to_cpu (id);
84 if (memcmp(addr, (char *)&ne_off, LPDS)) {
85 CDEBUG(D_ERROR, "%s: id %#llx offset %llu off: %#llx != "
86 "%#llx\n", who, id, off, *(__u64 *)addr, ne_off);
89 if (memcmp(addr + LPDS, (char *)&id, LPDS)) {
90 CDEBUG(D_ERROR, "%s: id %#llx offset %llu id: %#llx != %#llx\n",
91 who, id, off, *(__u64 *)(addr + LPDS), id);
95 addr += end - LPDS - LPDS;
96 if (memcmp(addr, (char *)&ne_off, LPDS)) {
97 CDEBUG(D_ERROR, "%s: id %#llx offset %llu end off: %#llx != "
98 "%#llx\n", who, id, off, *(__u64 *)addr, ne_off);
101 if (memcmp(addr + LPDS, (char *)&id, LPDS)) {
102 CDEBUG(D_ERROR, "%s: id %#llx offset %llu end id: %#llx != "
103 "%#llx\n", who, id, off, *(__u64 *)(addr + LPDS), id);
109 EXPORT_SYMBOL(block_debug_check);