95 	struct sighand_struct *sighand;  in __exit_signal()  local
100 	sighand = rcu_dereference(tsk->sighand);  in __exit_signal()
101 	spin_lock(&sighand->siglock);  in __exit_signal()
149 	tsk->sighand = NULL;  in __exit_signal()
150 	spin_unlock(&sighand->siglock);  in __exit_signal()
152 	__cleanup_sighand(sighand);  in __exit_signal()
399 	spin_lock_irq(&current->sighand->siglock);  in allow_signal()
406 		current->sighand->action[(sig)-1].sa.sa_handler = (void __user *)2;  in allow_signal()
409 	spin_unlock_irq(&current->sighand->siglock);  in allow_signal()
420 	spin_lock_irq(&current->sighand->siglock);  in disallow_signal()
421 	current->sighand->action[(sig)-1].sa.sa_handler = SIG_IGN;  in disallow_signal()
423 	spin_unlock_irq(&current->sighand->siglock);  in disallow_signal()
750 	struct sighand_struct *psig = parent->sighand;  in ignoring_children()
1180 		struct sighand_struct *const sighand = current->sighand;  in do_group_exit()  local
1181 		spin_lock_irq(&sighand->siglock);  in do_group_exit()
1190 		spin_unlock_irq(&sighand->siglock);  in do_group_exit()
1342 		spin_lock_irq(&p->parent->sighand->siglock);  in wait_task_zombie()
1374 		spin_unlock_irq(&p->parent->sighand->siglock);  in wait_task_zombie()
1455 	spin_lock_irq(&p->sighand->siglock);  in wait_task_stopped()
1477 	spin_unlock_irq(&p->sighand->siglock);  in wait_task_stopped()
1541 	spin_lock_irq(&p->sighand->siglock);  in wait_task_continued()
1544 		spin_unlock_irq(&p->sighand->siglock);  in wait_task_continued()
1550 	spin_unlock_irq(&p->sighand->siglock);  in wait_task_continued()