Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1#ifndef _LINUX_UNWIND_H
2#define _LINUX_UNWIND_H
3
4/*
5 * Copyright (C) 2002-2006 Novell, Inc.
6 * Jan Beulich <jbeulich@novell.com>
7 * This code is released under version 2 of the GNU GPL.
8 *
9 * A simple API for unwinding kernel stacks. This is used for
10 * debugging and error reporting purposes. The kernel doesn't need
11 * full-blown stack unwinding with all the bells and whistles, so there
12 * is not much point in implementing the full Dwarf2 unwind API.
13 */
14
15struct module;
16
17struct unwind_frame_info {};
18
19static inline void unwind_init(void) {}
20static inline void unwind_setup(void) {}
21
22#ifdef CONFIG_MODULES
23
24static inline void *unwind_add_table(struct module *mod,
25 const void *table_start,
26 unsigned long table_size)
27{
28 return NULL;
29}
30
31static inline void unwind_remove_table(void *handle, int init_only)
32{
33}
34
35#endif
36
37static inline int unwind_init_frame_info(struct unwind_frame_info *info,
38 struct task_struct *tsk,
39 const struct pt_regs *regs)
40{
41 return -ENOSYS;
42}
43
44static inline int unwind_init_blocked(struct unwind_frame_info *info,
45 struct task_struct *tsk)
46{
47 return -ENOSYS;
48}
49
50static inline int unwind_init_running(struct unwind_frame_info *info,
51 asmlinkage int (*cb)(struct unwind_frame_info *,
52 void *arg),
53 void *arg)
54{
55 return -ENOSYS;
56}
57
58static inline int unwind(struct unwind_frame_info *info)
59{
60 return -ENOSYS;
61}
62
63static inline int unwind_to_user(struct unwind_frame_info *info)
64{
65 return -ENOSYS;
66}
67
68#endif /* _LINUX_UNWIND_H */