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