91 static void __exit_signal(struct task_struct *tsk)  in __exit_signal()  argument
93 	struct signal_struct *sig = tsk->signal;  in __exit_signal()
94 	bool group_dead = thread_group_leader(tsk);  in __exit_signal()
99 	sighand = rcu_dereference_check(tsk->sighand,  in __exit_signal()
104 	posix_cpu_timers_exit(tsk);  in __exit_signal()
106 		posix_cpu_timers_exit_group(tsk);  in __exit_signal()
113 		if (unlikely(has_group_leader_pid(tsk)))  in __exit_signal()
114 			posix_cpu_timers_exit_group(tsk);  in __exit_signal()
129 		if (tsk == sig->curr_target)  in __exit_signal()
130 			sig->curr_target = next_thread(tsk);  in __exit_signal()
133 	add_device_randomness((const void*) &tsk->se.sum_exec_runtime,  in __exit_signal()
142 	task_cputime(tsk, &utime, &stime);  in __exit_signal()
146 	sig->gtime += task_gtime(tsk);  in __exit_signal()
147 	sig->min_flt += tsk->min_flt;  in __exit_signal()
148 	sig->maj_flt += tsk->maj_flt;  in __exit_signal()
149 	sig->nvcsw += tsk->nvcsw;  in __exit_signal()
150 	sig->nivcsw += tsk->nivcsw;  in __exit_signal()
151 	sig->inblock += task_io_get_inblock(tsk);  in __exit_signal()
152 	sig->oublock += task_io_get_oublock(tsk);  in __exit_signal()
153 	task_io_accounting_add(&sig->ioac, &tsk->ioac);  in __exit_signal()
154 	sig->sum_sched_runtime += tsk->se.sum_exec_runtime;  in __exit_signal()
156 	__unhash_process(tsk, group_dead);  in __exit_signal()
163 	flush_sigqueue(&tsk->pending);  in __exit_signal()
164 	tsk->sighand = NULL;  in __exit_signal()
168 	clear_tsk_thread_flag(tsk, TIF_SIGPENDING);  in __exit_signal()
177 	struct task_struct *tsk = container_of(rhp, struct task_struct, rcu);  in delayed_put_task_struct()  local
179 	perf_event_delayed_put(tsk);  in delayed_put_task_struct()
180 	trace_sched_process_free(tsk);  in delayed_put_task_struct()
181 	put_task_struct(tsk);  in delayed_put_task_struct()
378 kill_orphaned_pgrp(struct task_struct *tsk, struct task_struct *parent)  in kill_orphaned_pgrp()  argument
380 	struct pid *pgrp = task_pgrp(tsk);  in kill_orphaned_pgrp()
381 	struct task_struct *ignored_task = tsk;  in kill_orphaned_pgrp()
387 		parent = tsk->real_parent;  in kill_orphaned_pgrp()
395 	    task_session(parent) == task_session(tsk) &&  in kill_orphaned_pgrp()
701 static void exit_notify(struct task_struct *tsk, int group_dead)  in exit_notify()  argument
708 	forget_original_parent(tsk, &dead);  in exit_notify()
711 		kill_orphaned_pgrp(tsk->group_leader, NULL);  in exit_notify()
713 	if (unlikely(tsk->ptrace)) {  in exit_notify()
714 		int sig = thread_group_leader(tsk) &&  in exit_notify()
715 				thread_group_empty(tsk) &&  in exit_notify()
716 				!ptrace_reparented(tsk) ?  in exit_notify()
717 			tsk->exit_signal : SIGCHLD;  in exit_notify()
718 		autoreap = do_notify_parent(tsk, sig);  in exit_notify()
719 	} else if (thread_group_leader(tsk)) {  in exit_notify()
720 		autoreap = thread_group_empty(tsk) &&  in exit_notify()
721 			do_notify_parent(tsk, tsk->exit_signal);  in exit_notify()
726 	tsk->exit_state = autoreap ? EXIT_DEAD : EXIT_ZOMBIE;  in exit_notify()
727 	if (tsk->exit_state == EXIT_DEAD)  in exit_notify()
728 		list_add(&tsk->ptrace_entry, &dead);  in exit_notify()
731 	if (unlikely(tsk->signal->notify_count < 0))  in exit_notify()
732 		wake_up_process(tsk->signal->group_exit_task);  in exit_notify()
767 	struct task_struct *tsk = current;  in do_exit()  local
770 	profile_task_exit(tsk);  in do_exit()
771 	kcov_task_exit(tsk);  in do_exit()
773 	WARN_ON(blk_needs_flush_plug(tsk));  in do_exit()
777 	if (unlikely(!tsk->pid))  in do_exit()
791 	validate_creds_for_do_exit(tsk);  in do_exit()
797 	if (unlikely(tsk->flags & PF_EXITING)) {  in do_exit()
808 		tsk->flags |= PF_EXITPIDONE;  in do_exit()
813 	exit_signals(tsk);  /* sets PF_EXITING */  in do_exit()
823 	raw_spin_lock_irq(&tsk->pi_lock);  in do_exit()
824 	raw_spin_unlock_irq(&tsk->pi_lock);  in do_exit()
834 	if (tsk->mm)  in do_exit()
835 		sync_mm_rss(tsk->mm);  in do_exit()
836 	acct_update_integrals(tsk);  in do_exit()
837 	group_dead = atomic_dec_and_test(&tsk->signal->live);  in do_exit()
840 		hrtimer_cancel(&tsk->signal->real_timer);  in do_exit()
841 		exit_itimers(tsk->signal);  in do_exit()
843 		if (tsk->mm)  in do_exit()
844 			setmax_mm_hiwater_rss(&tsk->signal->maxrss, tsk->mm);  in do_exit()
849 	audit_free(tsk);  in do_exit()
851 	tsk->exit_code = code;  in do_exit()
852 	taskstats_exit(tsk, group_dead);  in do_exit()
858 	trace_sched_process_exit(tsk);  in do_exit()
860 	exit_sem(tsk);  in do_exit()
861 	exit_shm(tsk);  in do_exit()
862 	exit_files(tsk);  in do_exit()
863 	exit_fs(tsk);  in do_exit()
866 	exit_task_namespaces(tsk);  in do_exit()
867 	exit_task_work(tsk);  in do_exit()
868 	exit_thread(tsk);  in do_exit()
876 	perf_event_exit_task(tsk);  in do_exit()
878 	sched_autogroup_exit_task(tsk);  in do_exit()
879 	cgroup_exit(tsk);  in do_exit()
884 	flush_ptrace_hw_breakpoint(tsk);  in do_exit()
887 	exit_notify(tsk, group_dead);  in do_exit()
888 	proc_exit_connector(tsk);  in do_exit()
889 	mpol_put_task_policy(tsk);  in do_exit()
903 	tsk->flags |= PF_EXITPIDONE;  in do_exit()
905 	if (tsk->io_context)  in do_exit()
906 		exit_io_context(tsk);  in do_exit()
908 	if (tsk->splice_pipe)  in do_exit()
909 		free_pipe_info(tsk->splice_pipe);  in do_exit()
911 	if (tsk->task_frag.page)  in do_exit()
912 		put_page(tsk->task_frag.page);  in do_exit()
914 	validate_creds_for_do_exit(tsk);  in do_exit()
918 	if (tsk->nr_dirtied)  in do_exit()
919 		__this_cpu_add(dirty_throttle_leaks, tsk->nr_dirtied);  in do_exit()
923 	lockdep_free_task(tsk);  in do_exit()
1440 static int do_wait_thread(struct wait_opts *wo, struct task_struct *tsk)  in do_wait_thread()  argument
1444 	list_for_each_entry(p, &tsk->children, sibling) {  in do_wait_thread()
1454 static int ptrace_do_wait(struct wait_opts *wo, struct task_struct *tsk)  in ptrace_do_wait()  argument
1458 	list_for_each_entry(p, &tsk->ptraced, ptrace_entry) {  in ptrace_do_wait()
1492 	struct task_struct *tsk;  in do_wait()  local
1514 	tsk = current;  in do_wait()
1516 		retval = do_wait_thread(wo, tsk);  in do_wait()
1520 		retval = ptrace_do_wait(wo, tsk);  in do_wait()
1526 	} while_each_thread(current, tsk);  in do_wait()