58 	return t->sighand->action[sig - 1].sa.sa_handler;  in sig_handler()
423 	spin_lock_irqsave(&t->sighand->siglock, flags);  in flush_signals()
427 	spin_unlock_irqrestore(&t->sighand->siglock, flags);  in flush_signals()
458 	spin_lock_irqsave(&tsk->sighand->siglock, flags);  in flush_itimer_signals()
461 	spin_unlock_irqrestore(&tsk->sighand->siglock, flags);  in flush_itimer_signals()
469 		t->sighand->action[i].sa.sa_handler = SIG_IGN;  in ignore_signals()
482 	struct k_sigaction *ka = &t->sighand->action[0];  in flush_signal_handlers()
497 	void __user *handler = tsk->sighand->action[sig-1].sa.sa_handler;  in unhandled_signal()
621 		spin_unlock(&tsk->sighand->siglock);  in dequeue_signal()
623 		spin_lock(&tsk->sighand->siglock);  in dequeue_signal()
768 	assert_spin_locked(&t->sighand->siglock);  in ptrace_trap_notify()
980 	assert_spin_locked(&t->sighand->siglock);  in __send_signal()
1166 	spin_lock_irqsave(&t->sighand->siglock, flags);  in force_sig_info()
1167 	action = &t->sighand->action[sig-1];  in force_sig_info()
1180 	spin_unlock_irqrestore(&t->sighand->siglock, flags);  in force_sig_info()
1212 	struct sighand_struct *sighand;  in __lock_task_sighand()  local
1221 		sighand = rcu_dereference(tsk->sighand);  in __lock_task_sighand()
1222 		if (unlikely(sighand == NULL)) {  in __lock_task_sighand()
1238 		spin_lock(&sighand->siglock);  in __lock_task_sighand()
1239 		if (likely(sighand == tsk->sighand)) {  in __lock_task_sighand()
1243 		spin_unlock(&sighand->siglock);  in __lock_task_sighand()
1248 	return sighand;  in __lock_task_sighand()
1451 		spin_lock_irqsave(&p->sighand->siglock, flags);  in force_sigsegv()
1452 		p->sighand->action[sig - 1].sa.sa_handler = SIG_DFL;  in force_sigsegv()
1453 		spin_unlock_irqrestore(&p->sighand->siglock, flags);  in force_sigsegv()
1499 	spinlock_t *lock = &current->sighand->siglock;  in sigqueue_free()
1630 	psig = tsk->parent->sighand;  in do_notify_parent()
1681 	struct sighand_struct *sighand;  in do_notify_parent_cldstop()  local
1720 	sighand = parent->sighand;  in do_notify_parent_cldstop()
1721 	spin_lock_irqsave(&sighand->siglock, flags);  in do_notify_parent_cldstop()
1722 	if (sighand->action[SIGCHLD-1].sa.sa_handler != SIG_IGN &&  in do_notify_parent_cldstop()
1723 	    !(sighand->action[SIGCHLD-1].sa.sa_flags & SA_NOCLDSTOP))  in do_notify_parent_cldstop()
1729 	spin_unlock_irqrestore(&sighand->siglock, flags);  in do_notify_parent_cldstop()
1778 	__releases(&current->sighand->siglock)  in ptrace_stop()
1779 	__acquires(&current->sighand->siglock)  in ptrace_stop()
1795 		spin_unlock_irq(&current->sighand->siglock);  in ptrace_stop()
1797 		spin_lock_irq(&current->sighand->siglock);  in ptrace_stop()
1832 	spin_unlock_irq(&current->sighand->siglock);  in ptrace_stop()
1885 	spin_lock_irq(&current->sighand->siglock);  in ptrace_stop()
1919 	spin_lock_irq(&current->sighand->siglock);  in ptrace_notify()
1921 	spin_unlock_irq(&current->sighand->siglock);  in ptrace_notify()
1947 	__releases(&current->sighand->siglock)  in do_signal_stop()
2018 		spin_unlock_irq(&current->sighand->siglock);  in do_signal_stop()
2132 	struct sighand_struct *sighand = current->sighand;  in get_signal()  local
2150 	spin_lock_irq(&sighand->siglock);  in get_signal()
2166 		spin_unlock_irq(&sighand->siglock);  in get_signal()
2196 			spin_unlock_irq(&sighand->siglock);  in get_signal()
2211 		ka = &sighand->action[signr-1];  in get_signal()
2260 				spin_unlock_irq(&sighand->siglock);  in get_signal()
2267 				spin_lock_irq(&sighand->siglock);  in get_signal()
2282 		spin_unlock_irq(&sighand->siglock);  in get_signal()
2310 	spin_unlock_irq(&sighand->siglock);  in get_signal()
2400 	spin_lock_irq(&tsk->sighand->siglock);  in exit_signals()
2420 	spin_unlock_irq(&tsk->sighand->siglock);  in exit_signals()
2488 	spin_lock_irq(&tsk->sighand->siglock);  in __set_current_blocked()
2490 	spin_unlock_irq(&tsk->sighand->siglock);  in __set_current_blocked()
2609 	spin_lock_irq(&current->sighand->siglock);  in do_sigpending()
2612 	spin_unlock_irq(&current->sighand->siglock);  in do_sigpending()
2775 	spin_lock_irq(&tsk->sighand->siglock);  in do_sigtimedwait()
2787 		spin_unlock_irq(&tsk->sighand->siglock);  in do_sigtimedwait()
2791 		spin_lock_irq(&tsk->sighand->siglock);  in do_sigtimedwait()
2796 	spin_unlock_irq(&tsk->sighand->siglock);  in do_sigtimedwait()
3031 	spin_lock_irq(&current->sighand->siglock);  in kernel_sigaction()
3032 	current->sighand->action[sig - 1].sa.sa_handler = action;  in kernel_sigaction()
3043 	spin_unlock_irq(&current->sighand->siglock);  in kernel_sigaction()
3056 	k = &p->sighand->action[sig-1];  in do_sigaction()
3058 	spin_lock_irq(&p->sighand->siglock);  in do_sigaction()
3086 	spin_unlock_irq(&p->sighand->siglock);  in do_sigaction()
3598 	if (!spin_trylock(&t->sighand->siglock)) {  in kdb_send_sig_info()
3604 	spin_unlock(&t->sighand->siglock);  in kdb_send_sig_info()