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fault-inject.h
/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_FAULT_INJECT_H #define _LINUX_FAULT_INJECT_H #ifdef CONFIG_FAULT_INJECTION #include <linux/types.h> #include <linux/debugfs.h> #include <linux/ratelimit.h> #include <linux/atomic.h> /* * For explanation of the elements of this struct, see * Documentation/fault-injection/fault-injection.rst */ struct fault_attr { unsigned long probability; unsigned long interval; atomic_t times; atomic_t space; unsigned long verbose; bool 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; struct ratelimit_state ratelimit_state; struct dentry *dname; }; #define FAULT_ATTR_INITIALIZER { \ .interval = 1, \ .times = ATOMIC_INIT(1), \ .require_end = ULONG_MAX, \ .stacktrace_depth = 32, \ .ratelimit_state = RATELIMIT_STATE_INIT_DISABLED, \ .verbose = 2, \ .dname = NULL, \ } #define DECLARE_FAULT_ATTR(name) struct fault_attr name = FAULT_ATTR_INITIALIZER int setup_fault_attr(struct fault_attr *attr, char *str); bool should_fail(struct fault_attr *attr, ssize_t size); #ifdef CONFIG_FAULT_INJECTION_DEBUG_FS struct dentry *fault_create_debugfs_attr(const char *name, struct dentry *parent, struct fault_attr *attr); #else /* CONFIG_FAULT_INJECTION_DEBUG_FS */ static inline struct dentry *fault_create_debugfs_attr(const char *name, struct dentry *parent, struct fault_attr *attr) { return ERR_PTR(-ENODEV); } #endif /* CONFIG_FAULT_INJECTION_DEBUG_FS */ #endif /* CONFIG_FAULT_INJECTION */ struct kmem_cache; int should_failslab(struct kmem_cache *s, gfp_t gfpflags); #ifdef CONFIG_FAILSLAB extern bool __should_failslab(struct kmem_cache *s, gfp_t gfpflags); #else static inline bool __should_failslab(struct kmem_cache *s, gfp_t gfpflags) { return false; } #endif /* CONFIG_FAILSLAB */ #endif /* _LINUX_FAULT_INJECT_H */