diff options
Diffstat (limited to 'include/linux/codetag.h')
| -rw-r--r-- | include/linux/codetag.h | 50 |
1 files changed, 40 insertions, 10 deletions
diff --git a/include/linux/codetag.h b/include/linux/codetag.h index c2a579ccd455..5f2b9a1f722c 100644 --- a/include/linux/codetag.h +++ b/include/linux/codetag.h @@ -13,6 +13,9 @@ struct codetag_module; struct seq_buf; struct module; +#define CODETAG_SECTION_START_PREFIX "__start_" +#define CODETAG_SECTION_STOP_PREFIX "__stop_" + /* * An instance of this structure is created in a special ELF section at every * code location being tagged. At runtime, the special section is treated as @@ -33,10 +36,17 @@ union codetag_ref { struct codetag_type_desc { const char *section; size_t tag_size; - void (*module_load)(struct codetag_type *cttype, - struct codetag_module *cmod); - bool (*module_unload)(struct codetag_type *cttype, - struct codetag_module *cmod); + int (*module_load)(struct module *mod, + struct codetag *start, struct codetag *end); + void (*module_unload)(struct module *mod, + struct codetag *start, struct codetag *end); +#ifdef CONFIG_MODULES + void (*module_replaced)(struct module *mod, struct module *new_mod); + bool (*needs_section_mem)(struct module *mod, unsigned long size); + void *(*alloc_section_mem)(struct module *mod, unsigned long size, + unsigned int prepend, unsigned long align); + void (*free_section_mem)(struct module *mod, bool used); +#endif }; struct codetag_iterator { @@ -71,11 +81,31 @@ struct codetag_type * codetag_register_type(const struct codetag_type_desc *desc); #if defined(CONFIG_CODE_TAGGING) && defined(CONFIG_MODULES) -void codetag_load_module(struct module *mod); -bool codetag_unload_module(struct module *mod); -#else -static inline void codetag_load_module(struct module *mod) {} -static inline bool codetag_unload_module(struct module *mod) { return true; } -#endif + +bool codetag_needs_module_section(struct module *mod, const char *name, + unsigned long size); +void *codetag_alloc_module_section(struct module *mod, const char *name, + unsigned long size, unsigned int prepend, + unsigned long align); +void codetag_free_module_sections(struct module *mod); +void codetag_module_replaced(struct module *mod, struct module *new_mod); +int codetag_load_module(struct module *mod); +void codetag_unload_module(struct module *mod); + +#else /* defined(CONFIG_CODE_TAGGING) && defined(CONFIG_MODULES) */ + +static inline bool +codetag_needs_module_section(struct module *mod, const char *name, + unsigned long size) { return false; } +static inline void * +codetag_alloc_module_section(struct module *mod, const char *name, + unsigned long size, unsigned int prepend, + unsigned long align) { return NULL; } +static inline void codetag_free_module_sections(struct module *mod) {} +static inline void codetag_module_replaced(struct module *mod, struct module *new_mod) {} +static inline int codetag_load_module(struct module *mod) { return 0; } +static inline void codetag_unload_module(struct module *mod) {} + +#endif /* defined(CONFIG_CODE_TAGGING) && defined(CONFIG_MODULES) */ #endif /* _LINUX_CODETAG_H */ |