1 #ifndef _LINUX_FAULT_INJECT_H
2 #define _LINUX_FAULT_INJECT_H
4 #ifdef CONFIG_FAULT_INJECTION
6 #include <linux/types.h>
7 #include <linux/debugfs.h>
8 #include <asm/atomic.h>
11 * For explanation of the elements of this struct, see
12 * Documentation/fault-injection/fault-injection.txt
15 unsigned long probability
;
16 unsigned long interval
;
19 unsigned long verbose
;
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
;
29 #ifdef CONFIG_FAULT_INJECTION_DEBUG_FS
34 #define FAULT_ATTR_INITIALIZER { \
36 .times = ATOMIC_INIT(1), \
37 .require_end = ULONG_MAX, \
38 .stacktrace_depth = 32, \
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
);
46 #ifdef CONFIG_FAULT_INJECTION_DEBUG_FS
48 int init_fault_attr_dentries(struct fault_attr
*attr
, const char *name
);
49 void cleanup_fault_attr_dentries(struct fault_attr
*attr
);
51 #else /* CONFIG_FAULT_INJECTION_DEBUG_FS */
53 static inline int init_fault_attr_dentries(struct fault_attr
*attr
,
59 static inline void cleanup_fault_attr_dentries(struct fault_attr
*attr
)
63 #endif /* CONFIG_FAULT_INJECTION_DEBUG_FS */
65 #endif /* CONFIG_FAULT_INJECTION */
67 #ifdef CONFIG_FAILSLAB
68 extern bool should_failslab(size_t size
, gfp_t gfpflags
, unsigned long flags
);
70 static inline bool should_failslab(size_t size
, gfp_t gfpflags
,
75 #endif /* CONFIG_FAILSLAB */
77 #endif /* _LINUX_FAULT_INJECT_H */