fault-injection: use debugfs_remove_recursive
[linux-2.6.git] / include / linux / fault-inject.h
1 #ifndef _LINUX_FAULT_INJECT_H
2 #define _LINUX_FAULT_INJECT_H
3
4 #ifdef CONFIG_FAULT_INJECTION
5
6 #include <linux/types.h>
7 #include <linux/debugfs.h>
8 #include <asm/atomic.h>
9
10 /*
11  * For explanation of the elements of this struct, see
12  * Documentation/fault-injection/fault-injection.txt
13  */
14 struct fault_attr {
15         unsigned long probability;
16         unsigned long interval;
17         atomic_t times;
18         atomic_t space;
19         unsigned long verbose;
20         u32 task_filter;
21         unsigned long stacktrace_depth;
22         unsigned long require_start;
23         unsigned long require_end;
24         unsigned long reject_start;
25         unsigned long reject_end;
26
27         unsigned long count;
28
29 #ifdef CONFIG_FAULT_INJECTION_DEBUG_FS
30         struct dentry *dir;
31 #endif
32 };
33
34 #define FAULT_ATTR_INITIALIZER {                                \
35                 .interval = 1,                                  \
36                 .times = ATOMIC_INIT(1),                        \
37                 .require_end = ULONG_MAX,                       \
38                 .stacktrace_depth = 32,                         \
39                 .verbose = 2,                                   \
40         }
41
42 #define DECLARE_FAULT_ATTR(name) struct fault_attr name = FAULT_ATTR_INITIALIZER
43 int setup_fault_attr(struct fault_attr *attr, char *str);
44 bool should_fail(struct fault_attr *attr, ssize_t size);
45
46 #ifdef CONFIG_FAULT_INJECTION_DEBUG_FS
47
48 int init_fault_attr_dentries(struct fault_attr *attr, const char *name);
49 void cleanup_fault_attr_dentries(struct fault_attr *attr);
50
51 #else /* CONFIG_FAULT_INJECTION_DEBUG_FS */
52
53 static inline int init_fault_attr_dentries(struct fault_attr *attr,
54                                           const char *name)
55 {
56         return -ENODEV;
57 }
58
59 static inline void cleanup_fault_attr_dentries(struct fault_attr *attr)
60 {
61 }
62
63 #endif /* CONFIG_FAULT_INJECTION_DEBUG_FS */
64
65 #endif /* CONFIG_FAULT_INJECTION */
66
67 #ifdef CONFIG_FAILSLAB
68 extern bool should_failslab(size_t size, gfp_t gfpflags, unsigned long flags);
69 #else
70 static inline bool should_failslab(size_t size, gfp_t gfpflags,
71                                 unsigned long flags)
72 {
73         return false;
74 }
75 #endif /* CONFIG_FAILSLAB */
76
77 #endif /* _LINUX_FAULT_INJECT_H */