1237 struct task_struct {  struct
1238 	volatile long state;	/* -1 unrunnable, 0 runnable, >0 stopped */
1239 	void *stack;
1240 	atomic_t usage;
1241 	unsigned int flags;	/* per process flags, defined below */
1242 	unsigned int ptrace;
1245 	struct llist_node wake_entry;
1246 	int on_cpu;
1248 	int on_rq;
1250 	int prio, static_prio, normal_prio;
1251 	unsigned int rt_priority;
1252 	const struct sched_class *sched_class;
1253 	struct sched_entity se;
1254 	struct sched_rt_entity rt;
1258 	struct hlist_head preempt_notifiers;
1269 	unsigned char fpu_counter;
1271 	unsigned int btrace_seq;
1274 	unsigned int policy;
1275 	cpumask_t cpus_allowed;
1278 	int rcu_read_lock_nesting;
1279 	char rcu_read_unlock_special;
1280 	struct list_head rcu_node_entry;
1283 	struct rcu_node *rcu_blocked_node;
1286 	struct rt_mutex *rcu_boost_mutex;
1290 	struct sched_info sched_info;
1293 	struct list_head tasks;
1295 	struct plist_node pushable_tasks;
1298 	struct mm_struct *mm, *active_mm;
1300 	unsigned brk_randomized:1;
1303 	struct task_rss_stat	rss_stat;
1306 	int exit_state;
1307 	int exit_code, exit_signal;
1308 	int pdeath_signal;  /*  The signal sent when the parent dies  */
1309 	unsigned int jobctl;	/* JOBCTL_*, siglock protected */
1311 	unsigned int personality;
1335 	struct task_struct __rcu *real_parent; /* real parent process */  argument
1336 	struct task_struct __rcu *parent; /* recipient of SIGCHLD, wait4() reports */  argument
1342 	struct task_struct *group_leader;	/* threadgroup leader */  argument
1349 	struct list_head ptraced;
1350 	struct list_head ptrace_entry;
1353 	struct pid_link pids[PIDTYPE_MAX];
1354 	struct list_head thread_group;
1356 	struct completion *vfork_done;		/* for vfork() */
1357 	int __user *set_child_tid;		/* CLONE_CHILD_SETTID */
1358 	int __user *clear_child_tid;		/* CLONE_CHILD_CLEARTID */
1360 	cputime_t utime, stime, utimescaled, stimescaled;
1361 	cputime_t gtime;
1363 	cputime_t prev_utime, prev_stime;
1365 	unsigned long nvcsw, nivcsw; /* context switch counts */
1366 	struct timespec start_time; 		/* monotonic time */
1367 	struct timespec real_start_time;	/* boot based time */
1369 	unsigned long min_flt, maj_flt;
1371 	struct task_cputime cputime_expires;
1372 	struct list_head cpu_timers[3];
1375 	const struct cred __rcu *real_cred; /* objective and real subjective task
1377 	const struct cred __rcu *cred;	/* effective (overridable) subjective task
1379 	struct cred *replacement_session_keyring; /* for KEYCTL_SESSION_TO_PARENT */
1381 	char comm[TASK_COMM_LEN]; /* executable name excluding path
1386 	int link_count, total_link_count;
1389 	struct sysv_sem sysvsem;
1393 	unsigned long last_switch_count;
1396 	struct thread_struct thread;
1398 	struct fs_struct *fs;
1400 	struct files_struct *files;
1402 	struct nsproxy *nsproxy;
1404 	struct signal_struct *signal;
1405 	struct sighand_struct *sighand;
1407 	sigset_t blocked, real_blocked;
1408 	sigset_t saved_sigmask;	/* restored if set_restore_sigmask() was used */
1409 	struct sigpending pending;
1411 	unsigned long sas_ss_sp;
1412 	size_t sas_ss_size;
1413 	int (*notifier)(void *priv);
1414 	void *notifier_data;
1415 	sigset_t *notifier_mask;
1416 	struct audit_context *audit_context;
1418 	uid_t loginuid;
1419 	unsigned int sessionid;
1421 	seccomp_t seccomp;
1424    	u32 parent_exec_id;
1425    	u32 self_exec_id;
1428 	spinlock_t alloc_lock;
1432 	struct irqaction *irqaction;
1436 	raw_spinlock_t pi_lock;
1440 	struct plist_head pi_waiters;
1442 	struct rt_mutex_waiter *pi_blocked_on;
1447 	struct mutex_waiter *blocked_on;
1450 	unsigned int irq_events;
1451 	unsigned long hardirq_enable_ip;
1452 	unsigned long hardirq_disable_ip;
1453 	unsigned int hardirq_enable_event;
1454 	unsigned int hardirq_disable_event;
1455 	int hardirqs_enabled;
1456 	int hardirq_context;
1457 	unsigned long softirq_disable_ip;
1458 	unsigned long softirq_enable_ip;
1459 	unsigned int softirq_disable_event;
1460 	unsigned int softirq_enable_event;
1461 	int softirqs_enabled;
1462 	int softirq_context;
1466 	u64 curr_chain_key;
1467 	int lockdep_depth;
1468 	unsigned int lockdep_recursion;
1469 	struct held_lock held_locks[MAX_LOCK_DEPTH];
1470 	gfp_t lockdep_reclaim_gfp;
1474 	void *journal_info;
1477 	struct bio_list *bio_list;
1481 	struct blk_plug *plug;
1485 	struct reclaim_state *reclaim_state;
1487 	struct backing_dev_info *backing_dev_info;
1489 	struct io_context *io_context;
1491 	unsigned long ptrace_message;
1492 	siginfo_t *last_siginfo; /* For ptrace use.  */
1493 	struct task_io_accounting ioac;
1495 	u64 acct_rss_mem1;	/* accumulated rss usage */
1496 	u64 acct_vm_mem1;	/* accumulated virtual memory usage */
1497 	cputime_t acct_timexpd;	/* stime + utime since last update */
1500 	nodemask_t mems_allowed;	/* Protected by alloc_lock */
1501 	int mems_allowed_change_disable;
1502 	int cpuset_mem_spread_rotor;
1503 	int cpuset_slab_spread_rotor;
1507 	struct css_set __rcu *cgroups;
1509 	struct list_head cg_list;
1512 	struct robust_list_head __user *robust_list;
1514 	struct compat_robust_list_head __user *compat_robust_list;
1516 	struct list_head pi_state_list;
1517 	struct futex_pi_state *pi_state_cache;
1520 	struct perf_event_context *perf_event_ctxp[perf_nr_task_contexts];
1521 	struct mutex perf_event_mutex;
1522 	struct list_head perf_event_list;
1525 	struct mempolicy *mempolicy;	/* Protected by alloc_lock */
1526 	short il_next;
1527 	short pref_node_fork;
1529 	struct rcu_head rcu;
1534 	struct pipe_inode_info *splice_pipe;
1536 	struct task_delay_info *delays;
1539 	int make_it_fail;
1545 	int nr_dirtied;
1546 	int nr_dirtied_pause;
1547 	unsigned long dirty_paused_when; /* start of a write-and-pause period */
1550 	int latency_record_count;
1551 	struct latency_record latency_record[LT_SAVECOUNT];
1557 	unsigned long timer_slack_ns;
1558 	unsigned long default_timer_slack_ns;
1560 	struct list_head	*scm_work_list;
1563 	int curr_ret_stack;
1565 	struct ftrace_ret_stack	*ret_stack;
1567 	unsigned long long ftrace_timestamp;
1595 /* Future-safe accessor for struct task_struct's cpus_allowed. */  argument