72 	return t->sighand->action[sig - 1].sa.sa_handler;  in sig_handler()
199 	spin_lock_irq(&current->sighand->siglock);  in calculate_sigpending()
202 	spin_unlock_irq(&current->sighand->siglock);  in calculate_sigpending()
483 	spin_lock_irqsave(&t->sighand->siglock, flags);  in flush_signals()
487 	spin_unlock_irqrestore(&t->sighand->siglock, flags);  in flush_signals()
520 	spin_lock_irqsave(&tsk->sighand->siglock, flags);  in flush_itimer_signals()
523 	spin_unlock_irqrestore(&tsk->sighand->siglock, flags);  in flush_itimer_signals()
532 		t->sighand->action[i].sa.sa_handler = SIG_IGN;  in ignore_signals()
545 	struct k_sigaction *ka = &t->sighand->action[0];  in flush_signal_handlers()
560 	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()
887 	assert_spin_locked(&t->sighand->siglock);  in ptrace_trap_notify()
1082 	assert_spin_locked(&t->sighand->siglock);  in __send_signal()
1320 	spin_lock_irqsave(&t->sighand->siglock, flags);  in force_sig_info_to_task()
1321 	action = &t->sighand->action[sig-1];  in force_sig_info_to_task()
1338 	spin_unlock_irqrestore(&t->sighand->siglock, flags);  in force_sig_info_to_task()
1375 	struct sighand_struct *sighand;  in __lock_task_sighand()  local
1379 		sighand = rcu_dereference(tsk->sighand);  in __lock_task_sighand()
1380 		if (unlikely(sighand == NULL))  in __lock_task_sighand()
1394 		spin_lock_irqsave(&sighand->siglock, *flags);  in __lock_task_sighand()
1395 		if (likely(sighand == rcu_access_pointer(tsk->sighand)))  in __lock_task_sighand()
1397 		spin_unlock_irqrestore(&sighand->siglock, *flags);  in __lock_task_sighand()
1401 	return sighand;  in __lock_task_sighand()
1658 		spin_lock_irqsave(&p->sighand->siglock, flags);  in force_sigsegv()
1659 		p->sighand->action[sig - 1].sa.sa_handler = SIG_DFL;  in force_sigsegv()
1660 		spin_unlock_irqrestore(&p->sighand->siglock, flags);  in force_sigsegv()
1833 	spinlock_t *lock = &current->sighand->siglock;  in sigqueue_free()
1981 	psig = tsk->parent->sighand;  in do_notify_parent()
2036 	struct sighand_struct *sighand;  in do_notify_parent_cldstop()  local
2076 	sighand = parent->sighand;  in do_notify_parent_cldstop()
2077 	spin_lock_irqsave(&sighand->siglock, flags);  in do_notify_parent_cldstop()
2078 	if (sighand->action[SIGCHLD-1].sa.sa_handler != SIG_IGN &&  in do_notify_parent_cldstop()
2079 	    !(sighand->action[SIGCHLD-1].sa.sa_flags & SA_NOCLDSTOP))  in do_notify_parent_cldstop()
2085 	spin_unlock_irqrestore(&sighand->siglock, flags);  in do_notify_parent_cldstop()
2125 	__releases(&current->sighand->siglock)  in ptrace_stop()
2126 	__acquires(&current->sighand->siglock)  in ptrace_stop()
2139 		spin_unlock_irq(&current->sighand->siglock);  in ptrace_stop()
2141 		spin_lock_irq(&current->sighand->siglock);  in ptrace_stop()
2191 	spin_unlock_irq(&current->sighand->siglock);  in ptrace_stop()
2246 	spin_lock_irq(&current->sighand->siglock);  in ptrace_stop()
2280 	spin_lock_irq(&current->sighand->siglock);  in ptrace_notify()
2282 	spin_unlock_irq(&current->sighand->siglock);  in ptrace_notify()
2308 	__releases(&current->sighand->siglock)  in do_signal_stop()
2379 		spin_unlock_irq(&current->sighand->siglock);  in do_signal_stop()
2455 	__releases(&current->sighand->siglock)  in do_freezer_trap()
2464 		spin_unlock_irq(&current->sighand->siglock);  in do_freezer_trap()
2476 	spin_unlock_irq(&current->sighand->siglock);  in do_freezer_trap()
2551 	struct sighand_struct *sighand = current->sighand;  in get_signal()  local
2581 	spin_lock_irq(&sighand->siglock);  in get_signal()
2598 		spin_unlock_irq(&sighand->siglock);  in get_signal()
2624 				&sighand->action[SIGKILL - 1]);  in get_signal()
2640 				spin_unlock_irq(&sighand->siglock);  in get_signal()
2652 			spin_unlock_irq(&sighand->siglock);  in get_signal()
2676 		ka = &sighand->action[signr-1];  in get_signal()
2725 				spin_unlock_irq(&sighand->siglock);  in get_signal()
2732 				spin_lock_irq(&sighand->siglock);  in get_signal()
2748 		spin_unlock_irq(&sighand->siglock);  in get_signal()
2786 	spin_unlock_irq(&sighand->siglock);  in get_signal()
2880 	spin_lock_irq(&tsk->sighand->siglock);  in exit_signals()
2900 	spin_unlock_irq(&tsk->sighand->siglock);  in exit_signals()
2967 	spin_lock_irq(&tsk->sighand->siglock);  in __set_current_blocked()
2969 	spin_unlock_irq(&tsk->sighand->siglock);  in __set_current_blocked()
3120 	spin_lock_irq(&current->sighand->siglock);  in do_sigpending()
3123 	spin_unlock_irq(&current->sighand->siglock);  in do_sigpending()
3506 	spin_lock_irq(&tsk->sighand->siglock);  in do_sigtimedwait()
3518 		spin_unlock_irq(&tsk->sighand->siglock);  in do_sigtimedwait()
3523 		spin_lock_irq(&tsk->sighand->siglock);  in do_sigtimedwait()
3528 	spin_unlock_irq(&tsk->sighand->siglock);  in do_sigtimedwait()
3981 	spin_lock_irq(&current->sighand->siglock);  in kernel_sigaction()
3982 	current->sighand->action[sig - 1].sa.sa_handler = action;  in kernel_sigaction()
3993 	spin_unlock_irq(&current->sighand->siglock);  in kernel_sigaction()
4011 	k = &p->sighand->action[sig-1];  in do_sigaction()
4013 	spin_lock_irq(&p->sighand->siglock);  in do_sigaction()
4059 	spin_unlock_irq(&p->sighand->siglock);  in do_sigaction()
4658 	if (!spin_trylock(&t->sighand->siglock)) {  in kdb_send_sig()
4667 		spin_unlock(&t->sighand->siglock);  in kdb_send_sig()
4677 	spin_unlock(&t->sighand->siglock);  in kdb_send_sig()