diff options
Diffstat (limited to 'include/linux/fault-inject.h')
| -rw-r--r-- | include/linux/fault-inject.h | 93 |
1 files changed, 79 insertions, 14 deletions
diff --git a/include/linux/fault-inject.h b/include/linux/fault-inject.h index c6f996f2abb6..58fd14c82270 100644 --- a/include/linux/fault-inject.h +++ b/include/linux/fault-inject.h @@ -1,15 +1,26 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_FAULT_INJECT_H #define _LINUX_FAULT_INJECT_H +#include <linux/err.h> +#include <linux/types.h> + +struct dentry; +struct kmem_cache; + +enum fault_flags { + FAULT_NOWARN = 1 << 0, +}; + #ifdef CONFIG_FAULT_INJECTION -#include <linux/types.h> -#include <linux/debugfs.h> #include <linux/atomic.h> +#include <linux/configfs.h> +#include <linux/ratelimit.h> /* * For explanation of the elements of this struct, see - * Documentation/fault-injection/fault-injection.txt + * Documentation/fault-injection/fault-injection.rst */ struct fault_attr { unsigned long probability; @@ -17,7 +28,7 @@ struct fault_attr { atomic_t times; atomic_t space; unsigned long verbose; - u32 task_filter; + bool task_filter; unsigned long stacktrace_depth; unsigned long require_start; unsigned long require_end; @@ -25,20 +36,47 @@ struct fault_attr { 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, \ - .verbose = 2, \ +#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_ex(struct fault_attr *attr, ssize_t size, int flags); bool should_fail(struct fault_attr *attr, ssize_t size); +#else /* CONFIG_FAULT_INJECTION */ + +struct fault_attr { +}; + +#define DECLARE_FAULT_ATTR(name) struct fault_attr name = {} + +static inline int setup_fault_attr(struct fault_attr *attr, char *str) +{ + return 0; /* Note: 0 means error for __setup() handlers! */ +} +static inline bool should_fail_ex(struct fault_attr *attr, ssize_t size, int flags) +{ + return false; +} +static inline bool should_fail(struct fault_attr *attr, ssize_t size) +{ + return false; +} + +#endif /* CONFIG_FAULT_INJECTION */ + #ifdef CONFIG_FAULT_INJECTION_DEBUG_FS struct dentry *fault_create_debugfs_attr(const char *name, @@ -54,13 +92,40 @@ static inline struct dentry *fault_create_debugfs_attr(const char *name, #endif /* CONFIG_FAULT_INJECTION_DEBUG_FS */ -#endif /* CONFIG_FAULT_INJECTION */ +#ifdef CONFIG_FAULT_INJECTION_CONFIGFS + +struct fault_config { + struct fault_attr attr; + struct config_group group; +}; + +void fault_config_init(struct fault_config *config, const char *name); + +#else /* CONFIG_FAULT_INJECTION_CONFIGFS */ + +struct fault_config { +}; + +static inline void fault_config_init(struct fault_config *config, + const char *name) +{ +} + +#endif /* CONFIG_FAULT_INJECTION_CONFIGFS */ + +#ifdef CONFIG_FAIL_PAGE_ALLOC +bool should_fail_alloc_page(gfp_t gfp_mask, unsigned int order); +#else +static inline bool should_fail_alloc_page(gfp_t gfp_mask, unsigned int order) +{ + return false; +} +#endif /* CONFIG_FAIL_PAGE_ALLOC */ #ifdef CONFIG_FAILSLAB -extern bool should_failslab(size_t size, gfp_t gfpflags, unsigned long flags); +int should_failslab(struct kmem_cache *s, gfp_t gfpflags); #else -static inline bool should_failslab(size_t size, gfp_t gfpflags, - unsigned long flags) +static inline int should_failslab(struct kmem_cache *s, gfp_t gfpflags) { return false; } |