1484 	struct signal_struct *signal;  member
2554 #define __for_each_thread(signal, t)	\  argument
2555 	list_for_each_entry_rcu(t, &(signal)->thread_head, thread_node)
2558 	__for_each_thread((p)->signal, t)
2566 	return tsk->signal->nr_threads;  in get_nr_threads()
2582 	return task_pid(p) == p->signal->leader_pid;  in has_group_leader_pid()
2588 	return p1->signal == p2->signal;  in same_thread_group()
2647 	down_read(&tsk->signal->group_rwsem);  in threadgroup_change_begin()
2651 	up_read(&tsk->signal->group_rwsem);  in threadgroup_change_end()
2672 	down_write(&tsk->signal->group_rwsem);  in threadgroup_lock()
2683 	up_write(&tsk->signal->group_rwsem);  in threadgroup_unlock()
2804 	return unlikely(sigismember(&p->pending.signal, SIGKILL));  in __fatal_signal_pending()
3078 	return ACCESS_ONCE(tsk->signal->rlim[limit].rlim_cur);  in task_rlimit()
3084 	return ACCESS_ONCE(tsk->signal->rlim[limit].rlim_max);  in task_rlimit_max()