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) 2012, 2014, 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
40 #include <obd_support.h>
41 #include <lustre_debug.h>
42 #include <lustre_net.h>
44 void dump_lniobuf(struct niobuf_local *nb)
47 "niobuf_local: file_offset=%lld, len=%d, page=%p, rc=%d\n",
48 nb->lnb_file_offset, nb->lnb_len, nb->lnb_page, nb->lnb_rc);
49 CDEBUG(D_RPCTRACE, "nb->page: index = %ld\n",
50 nb->lnb_page ? page_index(nb->lnb_page) : -1);
53 #define LPDS sizeof(__u64)
54 int block_debug_setup(void *addr, int len, __u64 off, __u64 id)
58 off = cpu_to_le64 (off);
59 id = cpu_to_le64 (id);
60 memcpy(addr, (char *)&off, LPDS);
61 memcpy(addr + LPDS, (char *)&id, LPDS);
63 addr += len - LPDS - LPDS;
64 memcpy(addr, (char *)&off, LPDS);
65 memcpy(addr + LPDS, (char *)&id, LPDS);
69 EXPORT_SYMBOL(block_debug_setup);
71 int block_debug_check(char *who, void *addr, int end, __u64 off, __u64 id)
78 ne_off = le64_to_cpu (off);
79 id = le64_to_cpu (id);
80 if (memcmp(addr, (char *)&ne_off, LPDS)) {
81 CDEBUG(D_ERROR, "%s: id %#llx offset %llu off: %#llx != "
82 "%#llx\n", who, id, off, *(__u64 *)addr, ne_off);
85 if (memcmp(addr + LPDS, (char *)&id, LPDS)) {
86 CDEBUG(D_ERROR, "%s: id %#llx offset %llu id: %#llx != %#llx\n",
87 who, id, off, *(__u64 *)(addr + LPDS), id);
91 addr += end - LPDS - LPDS;
92 if (memcmp(addr, (char *)&ne_off, LPDS)) {
93 CDEBUG(D_ERROR, "%s: id %#llx offset %llu end off: %#llx != "
94 "%#llx\n", who, id, off, *(__u64 *)addr, ne_off);
97 if (memcmp(addr + LPDS, (char *)&id, LPDS)) {
98 CDEBUG(D_ERROR, "%s: id %#llx offset %llu end id: %#llx != "
99 "%#llx\n", who, id, off, *(__u64 *)(addr + LPDS), id);
105 EXPORT_SYMBOL(block_debug_check);