455 	struct task_struct *tsk = current;  in flush_itimer_signals()  local
458 	spin_lock_irqsave(&tsk->sighand->siglock, flags);  in flush_itimer_signals()
459 	__flush_itimer_signals(&tsk->pending);  in flush_itimer_signals()
460 	__flush_itimer_signals(&tsk->signal->shared_pending);  in flush_itimer_signals()
461 	spin_unlock_irqrestore(&tsk->sighand->siglock, flags);  in flush_itimer_signals()
495 int unhandled_signal(struct task_struct *tsk, int sig)  in unhandled_signal()  argument
497 	void __user *handler = tsk->sighand->action[sig-1].sa.sa_handler;  in unhandled_signal()
498 	if (is_global_init(tsk))  in unhandled_signal()
503 	return !tsk->ptrace;  in unhandled_signal()
559 int dequeue_signal(struct task_struct *tsk, sigset_t *mask, siginfo_t *info)  in dequeue_signal()  argument
566 	signr = __dequeue_signal(&tsk->pending, mask, info);  in dequeue_signal()
568 		signr = __dequeue_signal(&tsk->signal->shared_pending,  in dequeue_signal()
584 			struct hrtimer *tmr = &tsk->signal->real_timer;  in dequeue_signal()
587 			    tsk->signal->it_real_incr.tv64 != 0) {  in dequeue_signal()
589 						tsk->signal->it_real_incr);  in dequeue_signal()
621 		spin_unlock(&tsk->sighand->siglock);  in dequeue_signal()
623 		spin_lock(&tsk->sighand->siglock);  in dequeue_signal()
1209 struct sighand_struct *__lock_task_sighand(struct task_struct *tsk,  in __lock_task_sighand()  argument
1221 		sighand = rcu_dereference(tsk->sighand);  in __lock_task_sighand()
1239 		if (likely(sighand == tsk->sighand)) {  in __lock_task_sighand()
1572 bool do_notify_parent(struct task_struct *tsk, int sig)  in do_notify_parent()  argument
1583  	BUG_ON(task_is_stopped_or_traced(tsk));  in do_notify_parent()
1585 	BUG_ON(!tsk->ptrace &&  in do_notify_parent()
1586 	       (tsk->group_leader != tsk || !thread_group_empty(tsk)));  in do_notify_parent()
1593 		if (tsk->parent_exec_id != tsk->parent->self_exec_id)  in do_notify_parent()
1611 	info.si_pid = task_pid_nr_ns(tsk, task_active_pid_ns(tsk->parent));  in do_notify_parent()
1612 	info.si_uid = from_kuid_munged(task_cred_xxx(tsk->parent, user_ns),  in do_notify_parent()
1613 				       task_uid(tsk));  in do_notify_parent()
1616 	task_cputime(tsk, &utime, &stime);  in do_notify_parent()
1617 	info.si_utime = cputime_to_clock_t(utime + tsk->signal->utime);  in do_notify_parent()
1618 	info.si_stime = cputime_to_clock_t(stime + tsk->signal->stime);  in do_notify_parent()
1620 	info.si_status = tsk->exit_code & 0x7f;  in do_notify_parent()
1621 	if (tsk->exit_code & 0x80)  in do_notify_parent()
1623 	else if (tsk->exit_code & 0x7f)  in do_notify_parent()
1627 		info.si_status = tsk->exit_code >> 8;  in do_notify_parent()
1630 	psig = tsk->parent->sighand;  in do_notify_parent()
1632 	if (!tsk->ptrace && sig == SIGCHLD &&  in do_notify_parent()
1655 		__group_send_sig_info(sig, &info, tsk->parent);  in do_notify_parent()
1656 	__wake_up_parent(tsk, tsk->parent);  in do_notify_parent()
1675 static void do_notify_parent_cldstop(struct task_struct *tsk,  in do_notify_parent_cldstop()  argument
1685 		parent = tsk->parent;  in do_notify_parent_cldstop()
1687 		tsk = tsk->group_leader;  in do_notify_parent_cldstop()
1688 		parent = tsk->real_parent;  in do_notify_parent_cldstop()
1697 	info.si_pid = task_pid_nr_ns(tsk, task_active_pid_ns(parent));  in do_notify_parent_cldstop()
1698 	info.si_uid = from_kuid_munged(task_cred_xxx(parent, user_ns), task_uid(tsk));  in do_notify_parent_cldstop()
1701 	task_cputime(tsk, &utime, &stime);  in do_notify_parent_cldstop()
1711  		info.si_status = tsk->signal->group_exit_code & 0x7f;  in do_notify_parent_cldstop()
1714  		info.si_status = tsk->exit_code & 0x7f;  in do_notify_parent_cldstop()
1728 	__wake_up_parent(tsk, parent);  in do_notify_parent_cldstop()
1760 static int sigkill_pending(struct task_struct *tsk)  in sigkill_pending()  argument
1762 	return	sigismember(&tsk->pending.signal, SIGKILL) ||  in sigkill_pending()
1763 		sigismember(&tsk->signal->shared_pending.signal, SIGKILL);  in sigkill_pending()
2356 static void retarget_shared_pending(struct task_struct *tsk, sigset_t *which)  in retarget_shared_pending()  argument
2361 	sigandsets(&retarget, &tsk->signal->shared_pending.signal, which);  in retarget_shared_pending()
2365 	t = tsk;  in retarget_shared_pending()
2366 	while_each_thread(tsk, t) {  in retarget_shared_pending()
2383 void exit_signals(struct task_struct *tsk)  in exit_signals()  argument
2392 	threadgroup_change_begin(tsk);  in exit_signals()
2394 	if (thread_group_empty(tsk) || signal_group_exit(tsk->signal)) {  in exit_signals()
2395 		tsk->flags |= PF_EXITING;  in exit_signals()
2396 		threadgroup_change_end(tsk);  in exit_signals()
2400 	spin_lock_irq(&tsk->sighand->siglock);  in exit_signals()
2405 	tsk->flags |= PF_EXITING;  in exit_signals()
2407 	threadgroup_change_end(tsk);  in exit_signals()
2409 	if (!signal_pending(tsk))  in exit_signals()
2412 	unblocked = tsk->blocked;  in exit_signals()
2414 	retarget_shared_pending(tsk, &unblocked);  in exit_signals()
2416 	if (unlikely(tsk->jobctl & JOBCTL_STOP_PENDING) &&  in exit_signals()
2417 	    task_participate_group_stop(tsk))  in exit_signals()
2420 	spin_unlock_irq(&tsk->sighand->siglock);  in exit_signals()
2428 		do_notify_parent_cldstop(tsk, false, group_stop);  in exit_signals()
2459 static void __set_task_blocked(struct task_struct *tsk, const sigset_t *newset)  in __set_task_blocked()  argument
2461 	if (signal_pending(tsk) && !thread_group_empty(tsk)) {  in __set_task_blocked()
2465 		retarget_shared_pending(tsk, &newblocked);  in __set_task_blocked()
2467 	tsk->blocked = *newset;  in __set_task_blocked()
2486 	struct task_struct *tsk = current;  in __set_current_blocked()  local
2488 	spin_lock_irq(&tsk->sighand->siglock);  in __set_current_blocked()
2489 	__set_task_blocked(tsk, newset);  in __set_current_blocked()
2490 	spin_unlock_irq(&tsk->sighand->siglock);  in __set_current_blocked()
2503 	struct task_struct *tsk = current;  in sigprocmask()  local
2508 		*oldset = tsk->blocked;  in sigprocmask()
2512 		sigorsets(&newset, &tsk->blocked, set);  in sigprocmask()
2515 		sigandnsets(&newset, &tsk->blocked, set);  in sigprocmask()
2752 	struct task_struct *tsk = current;  in do_sigtimedwait()  local
2775 	spin_lock_irq(&tsk->sighand->siglock);  in do_sigtimedwait()
2776 	sig = dequeue_signal(tsk, &mask, info);  in do_sigtimedwait()
2784 		tsk->real_blocked = tsk->blocked;  in do_sigtimedwait()
2785 		sigandsets(&tsk->blocked, &tsk->blocked, &mask);  in do_sigtimedwait()
2787 		spin_unlock_irq(&tsk->sighand->siglock);  in do_sigtimedwait()
2791 		spin_lock_irq(&tsk->sighand->siglock);  in do_sigtimedwait()
2792 		__set_task_blocked(tsk, &tsk->real_blocked);  in do_sigtimedwait()
2793 		sigemptyset(&tsk->real_blocked);  in do_sigtimedwait()
2794 		sig = dequeue_signal(tsk, &mask, info);  in do_sigtimedwait()
2796 	spin_unlock_irq(&tsk->sighand->siglock);  in do_sigtimedwait()