struct task_struct {

 　　 volatile long state;

 　　.......

 　　 struct list_head tasks;

 　　.......

 　　 struct mm_struct *mm, *active_mm;

 　　.......

 　　 struct vm_area_struct *vmacache[VMACACHE_SIZE];

 　　......

  　　pid_t pid;

 　　 pid_t tgid;

 　　.......

    }

  struct thread_info {

          struct task_struct      *task;                             /* main task structure */

          struct2. exec_domain  *exec_domain;              /* execution domain */

          __u32                        flags;                             /* low level flags */

          __u32                        status;                          /* thread synchronous flags     */

          __u32                        cpu;                             /* current CPU */

          int                              saved_preempt_count;

          mm_segment_t         addr_limit;

          struct restart_block   restart_block;

          void __user               *sysenter_return;

          unsigned int              sig_on_uaccess_error:;

          unsigned int              uaccess_err:;              /* uaccess failed */

    };

   union thread_union {

 　　struct thread_info thread_info;

 　　unsigned long stack[THREAD_SIZE/sizeof(long)];

    }

 struct rt_prio_array {                            

 　　 DECLARE_BITMAP(bitmap, MAX_RT_PRIO+);

 　 　struct list_head queue[MAX_RT_PRIO];

 　}