Eric Lee / linux-smarc-t335x-v3.2

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include/linux/debugobjects.h 3.17 KB
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3ac7fe5a4   Thomas Gleixner   infrastructure to... 
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  #ifndef _LINUX_DEBUGOBJECTS_H
  #define _LINUX_DEBUGOBJECTS_H
  
  #include <linux/list.h>
  #include <linux/spinlock.h>
  
  enum debug_obj_state {
  	ODEBUG_STATE_NONE,
  	ODEBUG_STATE_INIT,
  	ODEBUG_STATE_INACTIVE,
  	ODEBUG_STATE_ACTIVE,
  	ODEBUG_STATE_DESTROYED,
  	ODEBUG_STATE_NOTAVAILABLE,
  	ODEBUG_STATE_MAX,
  };
  
  struct debug_obj_descr;
  
  /**
   * struct debug_obj - representaion of an tracked object
   * @node:	hlist node to link the object into the tracker list
   * @state:	tracked object state
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   * @astate:	current active state
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   * @object:	pointer to the real object
   * @descr:	pointer to an object type specific debug description structure
   */
  struct debug_obj {
  	struct hlist_node	node;
  	enum debug_obj_state	state;
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  	unsigned int		astate;
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  	void			*object;
  	struct debug_obj_descr	*descr;
  };
  
  /**
   * struct debug_obj_descr - object type specific debug description structure
   * @name:		name of the object typee
   * @fixup_init:		fixup function, which is called when the init check
   *			fails
   * @fixup_activate:	fixup function, which is called when the activate check
   *			fails
   * @fixup_destroy:	fixup function, which is called when the destroy check
   *			fails
   * @fixup_free:		fixup function, which is called when the free check
   *			fails
   */
  struct debug_obj_descr {
  	const char		*name;
  
  	int (*fixup_init)	(void *addr, enum debug_obj_state state);
  	int (*fixup_activate)	(void *addr, enum debug_obj_state state);
  	int (*fixup_destroy)	(void *addr, enum debug_obj_state state);
  	int (*fixup_free)	(void *addr, enum debug_obj_state state);
  };
  
  #ifdef CONFIG_DEBUG_OBJECTS
  extern void debug_object_init      (void *addr, struct debug_obj_descr *descr);
  extern void
  debug_object_init_on_stack(void *addr, struct debug_obj_descr *descr);
  extern void debug_object_activate  (void *addr, struct debug_obj_descr *descr);
  extern void debug_object_deactivate(void *addr, struct debug_obj_descr *descr);
  extern void debug_object_destroy   (void *addr, struct debug_obj_descr *descr);
  extern void debug_object_free      (void *addr, struct debug_obj_descr *descr);
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  /*
   * Active state:
   * - Set at 0 upon initialization.
   * - Must return to 0 before deactivation.
   */
  extern void
  debug_object_active_state(void *addr, struct debug_obj_descr *descr,
  			  unsigned int expect, unsigned int next);
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  extern void debug_objects_early_init(void);
  extern void debug_objects_mem_init(void);
  #else
  static inline void
  debug_object_init      (void *addr, struct debug_obj_descr *descr) { }
  static inline void
  debug_object_init_on_stack(void *addr, struct debug_obj_descr *descr) { }
  static inline void
  debug_object_activate  (void *addr, struct debug_obj_descr *descr) { }
  static inline void
  debug_object_deactivate(void *addr, struct debug_obj_descr *descr) { }
  static inline void
  debug_object_destroy   (void *addr, struct debug_obj_descr *descr) { }
  static inline void
  debug_object_free      (void *addr, struct debug_obj_descr *descr) { }
  
  static inline void debug_objects_early_init(void) { }
  static inline void debug_objects_mem_init(void) { }
  #endif
  
  #ifdef CONFIG_DEBUG_OBJECTS_FREE
  extern void debug_check_no_obj_freed(const void *address, unsigned long size);
  #else
  static inline void
  debug_check_no_obj_freed(const void *address, unsigned long size) { }
  #endif
  
  #endif