blob: e32aa268efacd6bce48356ddda9fe2d126adfc27 [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,
20};
21
22/**
23 * struct kmsg_dumper - kernel crash message dumper structure
24 * @dump: The callback which gets called on crashes. The buffer is passed
25 * as two sections, where s1 (length l1) contains the older
26 * messages and s2 (length l2) contains the newer.
27 * @list: Entry in the dumper list (private)
28 * @registered: Flag that specifies if this is already registered
29 */
30struct kmsg_dumper {
31 void (*dump)(struct kmsg_dumper *dumper, enum kmsg_dump_reason reason,
32 const char *s1, unsigned long l1,
33 const char *s2, unsigned long l2);
34 struct list_head list;
35 int registered;
36};
37
Randy Dunlap595dd3d2009-12-01 10:52:02 -080038#ifdef CONFIG_PRINTK
Simon Kagstrom456b5652009-10-16 14:09:18 +020039void kmsg_dump(enum kmsg_dump_reason reason);
40
41int kmsg_dump_register(struct kmsg_dumper *dumper);
42
43int kmsg_dump_unregister(struct kmsg_dumper *dumper);
Randy Dunlap595dd3d2009-12-01 10:52:02 -080044#else
45static inline void kmsg_dump(enum kmsg_dump_reason reason)
46{
47}
48
49static inline int kmsg_dump_register(struct kmsg_dumper *dumper)
50{
51 return -EINVAL;
52}
53
54static inline int kmsg_dump_unregister(struct kmsg_dumper *dumper)
55{
56 return -EINVAL;
57}
58#endif
Simon Kagstrom456b5652009-10-16 14:09:18 +020059
60#endif /* _LINUX_KMSG_DUMP_H */