1 #ifndef _LINUX_DEBUGOBJECTS_H 2 #define _LINUX_DEBUGOBJECTS_H 3 4 #include <linux/list.h> 5 #include <linux/spinlock.h> 6 7 enum debug_obj_state { 8 ODEBUG_STATE_NONE, 9 ODEBUG_STATE_INIT, 10 ODEBUG_STATE_INACTIVE, 11 ODEBUG_STATE_ACTIVE, 12 ODEBUG_STATE_DESTROYED, 13 ODEBUG_STATE_NOTAVAILABLE, 14 ODEBUG_STATE_MAX, 15 }; 16 17 struct debug_obj_descr; 18 19 /** 20 * struct debug_obj - representaion of an tracked object 21 * @node: hlist node to link the object into the tracker list 22 * @state: tracked object state 23 * @astate: current active state 24 * @object: pointer to the real object 25 * @descr: pointer to an object type specific debug description structure 26 */ 27 struct debug_obj { 28 struct hlist_node node; 29 enum debug_obj_state state; 30 unsigned int astate; 31 void *object; 32 struct debug_obj_descr *descr; 33 }; 34 35 /** 36 * struct debug_obj_descr - object type specific debug description structure 37 * @name: name of the object typee 38 * @fixup_init: fixup function, which is called when the init check 39 * fails 40 * @fixup_activate: fixup function, which is called when the activate check 41 * fails 42 * @fixup_destroy: fixup function, which is called when the destroy check 43 * fails 44 * @fixup_free: fixup function, which is called when the free check 45 * fails 46 */ 47 struct debug_obj_descr { 48 const char *name; 49 50 int (*fixup_init) (void *addr, enum debug_obj_state state); 51 int (*fixup_activate) (void *addr, enum debug_obj_state state); 52 int (*fixup_destroy) (void *addr, enum debug_obj_state state); 53 int (*fixup_free) (void *addr, enum debug_obj_state state); 54 }; 55 56 #ifdef CONFIG_DEBUG_OBJECTS 57 extern void debug_object_init (void *addr, struct debug_obj_descr *descr); 58 extern void 59 debug_object_init_on_stack(void *addr, struct debug_obj_descr *descr); 60 extern void debug_object_activate (void *addr, struct debug_obj_descr *descr); 61 extern void debug_object_deactivate(void *addr, struct debug_obj_descr *descr); 62 extern void debug_object_destroy (void *addr, struct debug_obj_descr *descr); 63 extern void debug_object_free (void *addr, struct debug_obj_descr *descr); 64 65 /* 66 * Active state: 67 * - Set at 0 upon initialization. 68 * - Must return to 0 before deactivation. 69 */ 70 extern void 71 debug_object_active_state(void *addr, struct debug_obj_descr *descr, 72 unsigned int expect, unsigned int next); 73 74 extern void debug_objects_early_init(void); 75 extern void debug_objects_mem_init(void); 76 #else 77 static inline void 78 debug_object_init (void *addr, struct debug_obj_descr *descr) { } 79 static inline void 80 debug_object_init_on_stack(void *addr, struct debug_obj_descr *descr) { } 81 static inline void 82 debug_object_activate (void *addr, struct debug_obj_descr *descr) { } 83 static inline void 84 debug_object_deactivate(void *addr, struct debug_obj_descr *descr) { } 85 static inline void 86 debug_object_destroy (void *addr, struct debug_obj_descr *descr) { } 87 static inline void 88 debug_object_free (void *addr, struct debug_obj_descr *descr) { } 89 90 static inline void debug_objects_early_init(void) { } 91 static inline void debug_objects_mem_init(void) { } 92 #endif 93 94 #ifdef CONFIG_DEBUG_OBJECTS_FREE 95 extern void debug_check_no_obj_freed(const void *address, unsigned long size); 96 #else 97 static inline void 98 debug_check_no_obj_freed(const void *address, unsigned long size) { } 99 #endif 100 101 #endif 102