http://blog.csdn.net/qq_26768741/article/details/54348586

1. struct task_struct {
2. volatile long state; /* -1 unrunnable, 0 runnable, >0 stopped */
3. struct thread_info *thread_info;
4. atomic_t usage;
5. unsigned long flags; /* per process flags, defined below */
6. unsigned long ptrace;
8. int lock_depth; /* Lock depth */
10. int prio, static_prio;
11. struct list_head run_list;
12. prio_array_t *array;
14. unsigned long sleep_avg;
15. long interactive_credit;
16. unsigned long long timestamp;
17. int activated;
19. unsigned long policy;
20. cpumask_t cpus_allowed;
21. unsigned int time_slice, first_time_slice;
23. struct list_head tasks;
24. struct list_head ptrace_children;
25. struct list_head ptrace_list;
27. struct mm_struct *mm, *active_mm;
29. /* task state */
30. struct linux_binfmt *binfmt;
31. int exit_code, exit_signal;
32. int pdeath_signal; /* The signal sent when the parent dies */
33. /* ??? */
34. unsigned long personality;
35. int did_exec:1;
36. pid_t pid;
37. pid_t __pgrp; /* Accessed via process_group() */
38. pid_t tty_old_pgrp;
39. pid_t session;
40. pid_t tgid;
41. /* boolean value for session group leader */
42. int leader;
43. /*
44. * pointers to (original) parent process, youngest child, younger sibling,
45. * older sibling, respectively. (p->father can be replaced with
46. * p->parent->pid)
47. */
48. struct task_struct *real_parent; /* real parent process (when being debugged) */
49. struct task_struct *parent; /* parent process */
50. struct list_head children; /* list of my children */
51. struct list_head sibling; /* linkage in my parent‘s children list */
52. struct task_struct *group_leader; /* threadgroup leader */
54. /* PID/PID hash table linkage. */
55. struct pid_link pids[PIDTYPE_MAX];
57. wait_queue_head_t wait_chldexit; /* for wait4() */
58. struct completion *vfork_done; /* for vfork() */
59. int __user *set_child_tid; /* CLONE_CHILD_SETTID */
60. int __user *clear_child_tid; /* CLONE_CHILD_CLEARTID */
62. unsigned long rt_priority;
63. unsigned long it_real_value, it_prof_value, it_virt_value;
64. unsigned long it_real_incr, it_prof_incr, it_virt_incr;
65. struct timer_list real_timer;
66. struct list_head posix_timers; /* POSIX.1b Interval Timers */
67. unsigned long utime, stime, cutime, cstime;
68. unsigned long nvcsw, nivcsw, cnvcsw, cnivcsw; /* context switch counts */
69. u64 start_time;
70. /* mm fault and swap info: this can arguably be seen as either mm-specific or thread-specific */
71. unsigned long min_flt, maj_flt, nswap, cmin_flt, cmaj_flt, cnswap;
72. /* process credentials */
73. uid_t uid,euid,suid,fsuid;
74. gid_t gid,egid,sgid,fsgid;
75. int ngroups;
76. gid_t groups[NGROUPS];
77. kernel_cap_t cap_effective, cap_inheritable, cap_permitted;
78. int keep_capabilities:1;
79. struct user_struct *user;
80. /* limits */
81. struct rlimit rlim[RLIM_NLIMITS];
82. unsigned short used_math;
83. char comm[16];
84. /* file system info */
85. int link_count, total_link_count;
86. struct tty_struct *tty; /* NULL if no tty */
87. /* ipc stuff */
88. struct sysv_sem sysvsem;
89. /* CPU-specific state of this task */
90. struct thread_struct thread;
91. /* filesystem information */
92. struct fs_struct *fs;
93. /* open file information */
94. struct files_struct *files;
95. /* namespace */
96. struct namespace *namespace;
97. /* signal handlers */
98. struct signal_struct *signal;
99. struct sighand_struct *sighand;
101. sigset_t blocked, real_blocked;
102. struct sigpending pending;
104. unsigned long sas_ss_sp;
105. size_t sas_ss_size;
106. int (*notifier)(void *priv);
107. void *notifier_data;
108. sigset_t *notifier_mask;
110. void *security;
112. /* Thread group tracking */
113. u32 parent_exec_id;
114. u32 self_exec_id;
115. /* Protection of (de-)allocation: mm, files, fs, tty */
116. spinlock_t alloc_lock;
117. /* Protection of proc_dentry: nesting proc_lock, dcache_lock, write_lock_irq(&tasklist_lock); */
118. spinlock_t proc_lock;
119. /* context-switch lock */
120. spinlock_t switch_lock;
122. /* journalling filesystem info */
123. void *journal_info;
125. /* VM state */
126. struct reclaim_state *reclaim_state;
128. struct dentry *proc_dentry;
129. struct backing_dev_info *backing_dev_info;
131. struct io_context *io_context;
133. unsigned long ptrace_message;
134. siginfo_t *last_siginfo; /* For ptrace use. */
135. };

進程控制塊 與 task_struct