blob: 24b44145a886f75115ce0dc8b4c70d6a67aca163 [file] [log] [blame]
Simon Kagstrom456b5652009-10-16 14:09:18 +02001/*
2 * linux/include/kmsg_dump.h
3 *
4 * Copyright (C) 2009 Net Insight AB
5 *
6 * Author: Simon Kagstrom <simon.kagstrom@netinsight.net>
7 *
8 * This file is subject to the terms and conditions of the GNU General Public
9 * License. See the file COPYING in the main directory of this archive
10 * for more details.
11 */
12#ifndef _LINUX_KMSG_DUMP_H
13#define _LINUX_KMSG_DUMP_H
14
15#include <linux/list.h>
16
17enum kmsg_dump_reason {
18 KMSG_DUMP_OOPS,
19 KMSG_DUMP_PANIC,
KOSAKI Motohiro0f4bd462009-12-22 03:15:43 +000020 KMSG_DUMP_KEXEC,
Simon Kagstrom456b5652009-10-16 14:09:18 +020021};
22
23/**
24 * struct kmsg_dumper - kernel crash message dumper structure
25 * @dump: The callback which gets called on crashes. The buffer is passed
26 * as two sections, where s1 (length l1) contains the older
27 * messages and s2 (length l2) contains the newer.
28 * @list: Entry in the dumper list (private)
29 * @registered: Flag that specifies if this is already registered
30 */
31struct kmsg_dumper {
32 void (*dump)(struct kmsg_dumper *dumper, enum kmsg_dump_reason reason,
33 const char *s1, unsigned long l1,
34 const char *s2, unsigned long l2);
35 struct list_head list;
36 int registered;
37};
38
Randy Dunlap595dd3d2009-12-01 10:52:02 -080039#ifdef CONFIG_PRINTK
Simon Kagstrom456b5652009-10-16 14:09:18 +020040void kmsg_dump(enum kmsg_dump_reason reason);
41
42int kmsg_dump_register(struct kmsg_dumper *dumper);
43
44int kmsg_dump_unregister(struct kmsg_dumper *dumper);
Randy Dunlap595dd3d2009-12-01 10:52:02 -080045#else
46static inline void kmsg_dump(enum kmsg_dump_reason reason)
47{
48}
49
50static inline int kmsg_dump_register(struct kmsg_dumper *dumper)
51{
52 return -EINVAL;
53}
54
55static inline int kmsg_dump_unregister(struct kmsg_dumper *dumper)
56{
57 return -EINVAL;
58}
59#endif
Simon Kagstrom456b5652009-10-16 14:09:18 +020060
61#endif /* _LINUX_KMSG_DUMP_H */