1.进程描述符
1 struct task_struct { 2 3 volatile long state; 4 5 ....... 6 7 struct list_head tasks; 8 9 ....... 10 11 struct mm_struct *mm, *active_mm; 12 13 ....... 14 15 struct vm_area_struct *vmacache[VMACACHE_SIZE]; 16 17 ...... 18 19 pid_t pid; 20 pid_t tgid; 21 22 ....... 23 }
所在文件：include/linux/sched.h
2.线程描述符（current指向该描述符，并通过该描述符找到进程描述符）
1 struct thread_info { 2 struct task_struct *task; /* main task structure */ 3 struct2. exec_domain *exec_domain; /* execution domain */ 4 __u32 flags; /* low level flags */ 5 __u32 status; /* thread synchronous flags */ 6 __u32 cpu; /* current CPU */ 7 int saved_preempt_count; 8 mm_segment_t addr_limit; 9 struct restart_block restart_block; 10 void __user *sysenter_return; 11 unsigned int sig_on_uaccess_error:1; 12 unsigned int uaccess_err:1; /* uaccess failed */ 13 };
所在文件：arch/x86/include/asm/thread_info.h
3.进程的内核栈
1 union thread_union { 2 3 struct thread_info thread_info; 4 5 unsigned long stack[THREAD_SIZE/sizeof(long)]; 6 7 }
所在文件：include/linux/sched.h
4.进程的运行队列
1 struct rt_prio_array { 2 3 DECLARE_BITMAP(bitmap, MAX_RT_PRIO+1); 4 5 struct list_head queue[MAX_RT_PRIO]; 6 7 }
所在文件：kernel/sched/sched.h