69 	return t->sighand->action[sig - 1].sa.sa_handler;  in sig_handler()
195 	spin_lock_irq(&current->sighand->siglock);  in calculate_sigpending()
198 	spin_unlock_irq(&current->sighand->siglock);  in calculate_sigpending()
480 	spin_lock_irqsave(&t->sighand->siglock, flags);  in flush_signals()
484 	spin_unlock_irqrestore(&t->sighand->siglock, flags);  in flush_signals()
517 	spin_lock_irqsave(&tsk->sighand->siglock, flags);  in flush_itimer_signals()
520 	spin_unlock_irqrestore(&tsk->sighand->siglock, flags);  in flush_itimer_signals()
529 		t->sighand->action[i].sa.sa_handler = SIG_IGN;  in ignore_signals()
542 	struct k_sigaction *ka = &t->sighand->action[0];  in flush_signal_handlers()
557 	void __user *handler = tsk->sighand->action[sig-1].sa.sa_handler;  in unhandled_signal()
698 		spin_unlock(&tsk->sighand->siglock);  in dequeue_signal()
700 		spin_lock(&tsk->sighand->siglock);  in dequeue_signal()
765 	lockdep_assert_held(&t->sighand->siglock);  in signal_wake_up_state()
890 	lockdep_assert_held(&t->sighand->siglock);  in ptrace_trap_notify()
1086 	lockdep_assert_held(&t->sighand->siglock);  in __send_signal_locked()
1328 	spin_lock_irqsave(&t->sighand->siglock, flags);  in force_sig_info_to_task()
1329 	action = &t->sighand->action[sig-1];  in force_sig_info_to_task()
1349 	spin_unlock_irqrestore(&t->sighand->siglock, flags);  in force_sig_info_to_task()
1386 	struct sighand_struct *sighand;  in __lock_task_sighand()  local
1390 		sighand = rcu_dereference(tsk->sighand);  in __lock_task_sighand()
1391 		if (unlikely(sighand == NULL))  in __lock_task_sighand()
1405 		spin_lock_irqsave(&sighand->siglock, *flags);  in __lock_task_sighand()
1406 		if (likely(sighand == rcu_access_pointer(tsk->sighand)))  in __lock_task_sighand()
1408 		spin_unlock_irqrestore(&sighand->siglock, *flags);  in __lock_task_sighand()
1412 	return sighand;  in __lock_task_sighand()
1418 	struct sighand_struct *sighand;  in lockdep_assert_task_sighand_held()  local
1421 	sighand = rcu_dereference(task->sighand);  in lockdep_assert_task_sighand_held()
1422 	if (sighand)  in lockdep_assert_task_sighand_held()
1423 		lockdep_assert_held(&sighand->siglock);  in lockdep_assert_task_sighand_held()
1938 	spinlock_t *lock = &current->sighand->siglock;  in sigqueue_free()
2086 	psig = tsk->parent->sighand;  in do_notify_parent()
2141 	struct sighand_struct *sighand;  in do_notify_parent_cldstop()  local
2181 	sighand = parent->sighand;  in do_notify_parent_cldstop()
2182 	spin_lock_irqsave(&sighand->siglock, flags);  in do_notify_parent_cldstop()
2183 	if (sighand->action[SIGCHLD-1].sa.sa_handler != SIG_IGN &&  in do_notify_parent_cldstop()
2184 	    !(sighand->action[SIGCHLD-1].sa.sa_flags & SA_NOCLDSTOP))  in do_notify_parent_cldstop()
2190 	spin_unlock_irqrestore(&sighand->siglock, flags);  in do_notify_parent_cldstop()
2207 	__releases(&current->sighand->siglock)  in ptrace_stop()
2208 	__acquires(&current->sighand->siglock)  in ptrace_stop()
2221 		spin_unlock_irq(&current->sighand->siglock);  in ptrace_stop()
2223 		spin_lock_irq(&current->sighand->siglock);  in ptrace_stop()
2280 	spin_unlock_irq(&current->sighand->siglock);  in ptrace_stop()
2315 	spin_lock_irq(&current->sighand->siglock);  in ptrace_stop()
2355 	spin_lock_irq(&current->sighand->siglock);  in ptrace_notify()
2357 	spin_unlock_irq(&current->sighand->siglock);  in ptrace_notify()
2384 	__releases(&current->sighand->siglock)  in do_signal_stop()
2457 		spin_unlock_irq(&current->sighand->siglock);  in do_signal_stop()
2532 	__releases(&current->sighand->siglock)  in do_freezer_trap()
2541 		spin_unlock_irq(&current->sighand->siglock);  in do_freezer_trap()
2553 	spin_unlock_irq(&current->sighand->siglock);  in do_freezer_trap()
2628 	struct sighand_struct *sighand = current->sighand;  in get_signal()  local
2650 	spin_lock_irq(&sighand->siglock);  in get_signal()
2667 		spin_unlock_irq(&sighand->siglock);  in get_signal()
2698 				&sighand->action[SIGKILL - 1]);  in get_signal()
2711 				spin_unlock_irq(&sighand->siglock);  in get_signal()
2723 			spin_unlock_irq(&sighand->siglock);  in get_signal()
2744 		    !(sighand->action[signr -1].sa.sa_flags & SA_IMMUTABLE)) {  in get_signal()
2750 		ka = &sighand->action[signr-1];  in get_signal()
2799 				spin_unlock_irq(&sighand->siglock);  in get_signal()
2806 				spin_lock_irq(&sighand->siglock);  in get_signal()
2822 		spin_unlock_irq(&sighand->siglock);  in get_signal()
2860 	spin_unlock_irq(&sighand->siglock);  in get_signal()
2957 	spin_lock_irq(&tsk->sighand->siglock);  in exit_signals()
2977 	spin_unlock_irq(&tsk->sighand->siglock);  in exit_signals()
3044 	spin_lock_irq(&tsk->sighand->siglock);  in __set_current_blocked()
3046 	spin_unlock_irq(&tsk->sighand->siglock);  in __set_current_blocked()
3197 	spin_lock_irq(&current->sighand->siglock);  in do_sigpending()
3200 	spin_unlock_irq(&current->sighand->siglock);  in do_sigpending()
3589 	spin_lock_irq(&tsk->sighand->siglock);  in do_sigtimedwait()
3601 		spin_unlock_irq(&tsk->sighand->siglock);  in do_sigtimedwait()
3606 		spin_lock_irq(&tsk->sighand->siglock);  in do_sigtimedwait()
3611 	spin_unlock_irq(&tsk->sighand->siglock);  in do_sigtimedwait()
4065 	spin_lock_irq(&current->sighand->siglock);  in kernel_sigaction()
4066 	current->sighand->action[sig - 1].sa.sa_handler = action;  in kernel_sigaction()
4077 	spin_unlock_irq(&current->sighand->siglock);  in kernel_sigaction()
4095 	k = &p->sighand->action[sig-1];  in do_sigaction()
4097 	spin_lock_irq(&p->sighand->siglock);  in do_sigaction()
4099 		spin_unlock_irq(&p->sighand->siglock);  in do_sigaction()
4147 	spin_unlock_irq(&p->sighand->siglock);  in do_sigaction()
4153 	__acquires(&current->sighand->siglock)  in sigaltstack_lock()
4155 	spin_lock_irq(&current->sighand->siglock);  in sigaltstack_lock()
4159 	__releases(&current->sighand->siglock)  in sigaltstack_unlock()
4161 	spin_unlock_irq(&current->sighand->siglock);  in sigaltstack_unlock()
4774 	if (!spin_trylock(&t->sighand->siglock)) {  in kdb_send_sig()
4783 		spin_unlock(&t->sighand->siglock);  in kdb_send_sig()
4793 	spin_unlock(&t->sighand->siglock);  in kdb_send_sig()