72 	return t->sighand->action[sig - 1].sa.sa_handler;  in sig_handler()
188 	spin_lock_irq(&current->sighand->siglock);  in calculate_sigpending()
191 	spin_unlock_irq(&current->sighand->siglock);  in calculate_sigpending()
474 	spin_lock_irqsave(&t->sighand->siglock, flags);  in flush_signals()
478 	spin_unlock_irqrestore(&t->sighand->siglock, flags);  in flush_signals()
511 	spin_lock_irqsave(&tsk->sighand->siglock, flags);  in flush_itimer_signals()
514 	spin_unlock_irqrestore(&tsk->sighand->siglock, flags);  in flush_itimer_signals()
523 		t->sighand->action[i].sa.sa_handler = SIG_IGN;  in ignore_signals()
536 	struct k_sigaction *ka = &t->sighand->action[0];  in flush_signal_handlers()
551 	void __user *handler = tsk->sighand->action[sig-1].sa.sa_handler;  in unhandled_signal()
632 	lockdep_assert_held(&tsk->sighand->siglock);  in dequeue_signal()
694 		spin_unlock(&tsk->sighand->siglock);  in dequeue_signal()
696 		spin_lock(&tsk->sighand->siglock);  in dequeue_signal()
761 	lockdep_assert_held(&t->sighand->siglock);  in signal_wake_up_state()
886 	lockdep_assert_held(&t->sighand->siglock);  in ptrace_trap_notify()
1081 	lockdep_assert_held(&t->sighand->siglock);  in __send_signal_locked()
1333 	spin_lock_irqsave(&t->sighand->siglock, flags);  in force_sig_info_to_task()
1334 	action = &t->sighand->action[sig-1];  in force_sig_info_to_task()
1355 	spin_unlock_irqrestore(&t->sighand->siglock, flags);  in force_sig_info_to_task()
1392 	struct sighand_struct *sighand;  in __lock_task_sighand()  local
1396 		sighand = rcu_dereference(tsk->sighand);  in __lock_task_sighand()
1397 		if (unlikely(sighand == NULL))  in __lock_task_sighand()
1411 		spin_lock_irqsave(&sighand->siglock, *flags);  in __lock_task_sighand()
1412 		if (likely(sighand == rcu_access_pointer(tsk->sighand)))  in __lock_task_sighand()
1414 		spin_unlock_irqrestore(&sighand->siglock, *flags);  in __lock_task_sighand()
1418 	return sighand;  in __lock_task_sighand()
1424 	struct sighand_struct *sighand;  in lockdep_assert_task_sighand_held()  local
1427 	sighand = rcu_dereference(task->sighand);  in lockdep_assert_task_sighand_held()
1428 	if (sighand)  in lockdep_assert_task_sighand_held()
1429 		lockdep_assert_held(&sighand->siglock);  in lockdep_assert_task_sighand_held()
1942 	spinlock_t *lock = &current->sighand->siglock;  in sigqueue_free()
2114 	psig = tsk->parent->sighand;  in do_notify_parent()
2169 	struct sighand_struct *sighand;  in do_notify_parent_cldstop()  local
2209 	sighand = parent->sighand;  in do_notify_parent_cldstop()
2210 	spin_lock_irqsave(&sighand->siglock, flags);  in do_notify_parent_cldstop()
2211 	if (sighand->action[SIGCHLD-1].sa.sa_handler != SIG_IGN &&  in do_notify_parent_cldstop()
2212 	    !(sighand->action[SIGCHLD-1].sa.sa_flags & SA_NOCLDSTOP))  in do_notify_parent_cldstop()
2218 	spin_unlock_irqrestore(&sighand->siglock, flags);  in do_notify_parent_cldstop()
2235 	__releases(&current->sighand->siglock)  in ptrace_stop()
2236 	__acquires(&current->sighand->siglock)  in ptrace_stop()
2249 		spin_unlock_irq(&current->sighand->siglock);  in ptrace_stop()
2251 		spin_lock_irq(&current->sighand->siglock);  in ptrace_stop()
2308 	spin_unlock_irq(&current->sighand->siglock);  in ptrace_stop()
2366 	spin_lock_irq(&current->sighand->siglock);  in ptrace_stop()
2406 	spin_lock_irq(&current->sighand->siglock);  in ptrace_notify()
2408 	spin_unlock_irq(&current->sighand->siglock);  in ptrace_notify()
2435 	__releases(&current->sighand->siglock)  in do_signal_stop()
2506 		spin_unlock_irq(&current->sighand->siglock);  in do_signal_stop()
2581 	__releases(&current->sighand->siglock)  in do_freezer_trap()
2590 		spin_unlock_irq(&current->sighand->siglock);  in do_freezer_trap()
2602 	spin_unlock_irq(&current->sighand->siglock);  in do_freezer_trap()
2685 	struct sighand_struct *sighand = current->sighand;  in get_signal()  local
2707 	spin_lock_irq(&sighand->siglock);  in get_signal()
2724 		spin_unlock_irq(&sighand->siglock);  in get_signal()
2755 					     &sighand->action[SIGKILL-1]);  in get_signal()
2772 				spin_unlock_irq(&sighand->siglock);  in get_signal()
2784 			spin_unlock_irq(&sighand->siglock);  in get_signal()
2804 		    !(sighand->action[signr -1].sa.sa_flags & SA_IMMUTABLE)) {  in get_signal()
2810 		ka = &sighand->action[signr-1];  in get_signal()
2859 				spin_unlock_irq(&sighand->siglock);  in get_signal()
2866 				spin_lock_irq(&sighand->siglock);  in get_signal()
2882 		spin_unlock_irq(&sighand->siglock);  in get_signal()
2921 	spin_unlock_irq(&sighand->siglock);  in get_signal()
3018 	spin_lock_irq(&tsk->sighand->siglock);  in exit_signals()
3039 	spin_unlock_irq(&tsk->sighand->siglock);  in exit_signals()
3106 	spin_lock_irq(&tsk->sighand->siglock);  in __set_current_blocked()
3108 	spin_unlock_irq(&tsk->sighand->siglock);  in __set_current_blocked()
3259 	spin_lock_irq(&current->sighand->siglock);  in do_sigpending()
3262 	spin_unlock_irq(&current->sighand->siglock);  in do_sigpending()
3651 	spin_lock_irq(&tsk->sighand->siglock);  in do_sigtimedwait()
3663 		spin_unlock_irq(&tsk->sighand->siglock);  in do_sigtimedwait()
3668 		spin_lock_irq(&tsk->sighand->siglock);  in do_sigtimedwait()
3673 	spin_unlock_irq(&tsk->sighand->siglock);  in do_sigtimedwait()
4149 	spin_lock_irq(&current->sighand->siglock);  in kernel_sigaction()
4150 	current->sighand->action[sig - 1].sa.sa_handler = action;  in kernel_sigaction()
4161 	spin_unlock_irq(&current->sighand->siglock);  in kernel_sigaction()
4179 	k = &p->sighand->action[sig-1];  in do_sigaction()
4181 	spin_lock_irq(&p->sighand->siglock);  in do_sigaction()
4183 		spin_unlock_irq(&p->sighand->siglock);  in do_sigaction()
4231 	spin_unlock_irq(&p->sighand->siglock);  in do_sigaction()
4237 	__acquires(&current->sighand->siglock)  in sigaltstack_lock()
4239 	spin_lock_irq(&current->sighand->siglock);  in sigaltstack_lock()
4243 	__releases(&current->sighand->siglock)  in sigaltstack_unlock()
4245 	spin_unlock_irq(&current->sighand->siglock);  in sigaltstack_unlock()
4879 	if (!spin_trylock(&t->sighand->siglock)) {  in kdb_send_sig()
4888 		spin_unlock(&t->sighand->siglock);  in kdb_send_sig()
4898 	spin_unlock(&t->sighand->siglock);  in kdb_send_sig()