#ifndef _LINUX_FAULT_INJECT_H #define _LINUX_FAULT_INJECT_H #ifdef CONFIG_FAULT_INJECTION #include <linux/types.h> #include <linux/debugfs.h> #include <asm/atomic.h> /* * For explanation of the elements of this struct, see * Documentation/fault-injection/fault-injection.txt */ struct fault_attr { unsigned long probability; unsigned long interval; atomic_t times; atomic_t space; unsigned long verbose; u32 task_filter; unsigned long stacktrace_depth; unsigned long require_start; unsigned long require_end; unsigned long reject_start; unsigned long reject_end; unsigned long count; #ifdef CONFIG_FAULT_INJECTION_DEBUG_FS struct { struct dentry *dir; struct dentry *probability_file; struct dentry *interval_file; struct dentry *times_file; struct dentry *space_file; struct dentry *verbose_file; struct dentry *task_filter_file; struct dentry *stacktrace_depth_file; struct dentry *require_start_file; struct dentry *require_end_file; struct dentry *reject_start_file; struct dentry *reject_end_file; } dentries; #endif }; #define FAULT_ATTR_INITIALIZER { \ .interval = 1, \ .times = ATOMIC_INIT(1), \ .require_end = ULONG_MAX, \ .stacktrace_depth = 32, \ .verbose = 2, \ } #define DECLARE_FAULT_ATTR(name) struct fault_attr name = FAULT_ATTR_INITIALIZER int setup_fault_attr(struct fault_attr *attr, char *str); void should_fail_srandom(unsigned long entropy); bool should_fail(struct fault_attr *attr, ssize_t size); #ifdef CONFIG_FAULT_INJECTION_DEBUG_FS int init_fault_attr_dentries(struct fault_attr *attr, const char *name); void cleanup_fault_attr_dentries(struct fault_attr *attr); #else /* CONFIG_FAULT_INJECTION_DEBUG_FS */ static inline int init_fault_attr_dentries(struct fault_attr *attr, const char *name) { return -ENODEV; } static inline void cleanup_fault_attr_dentries(struct fault_attr *attr) { } #endif /* CONFIG_FAULT_INJECTION_DEBUG_FS */ #endif /* CONFIG_FAULT_INJECTION */ #ifdef CONFIG_FAILSLAB extern bool should_failslab(size_t size, gfp_t gfpflags); #else static inline bool should_failslab(size_t size, gfp_t gfpflags) { return false; } #endif /* CONFIG_FAILSLAB */ #endif /* _LINUX_FAULT_INJECT_H */