69 	return t->sighand->action[sig - 1].sa.sa_handler;  in sig_handler()
196 	spin_lock_irq(&current->sighand->siglock);  in calculate_sigpending()
199 	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()
689 		spin_unlock(&tsk->sighand->siglock);  in dequeue_signal()
691 		spin_lock(&tsk->sighand->siglock);  in dequeue_signal()
878 	assert_spin_locked(&t->sighand->siglock);  in ptrace_trap_notify()
1073 	assert_spin_locked(&t->sighand->siglock);  in __send_signal()
1311 	spin_lock_irqsave(&t->sighand->siglock, flags);  in force_sig_info_to_task()
1312 	action = &t->sighand->action[sig-1];  in force_sig_info_to_task()
1329 	spin_unlock_irqrestore(&t->sighand->siglock, flags);  in force_sig_info_to_task()
1366 	struct sighand_struct *sighand;  in __lock_task_sighand()  local
1370 		sighand = rcu_dereference(tsk->sighand);  in __lock_task_sighand()
1371 		if (unlikely(sighand == NULL))  in __lock_task_sighand()
1385 		spin_lock_irqsave(&sighand->siglock, *flags);  in __lock_task_sighand()
1386 		if (likely(sighand == tsk->sighand))  in __lock_task_sighand()
1388 		spin_unlock_irqrestore(&sighand->siglock, *flags);  in __lock_task_sighand()
1392 	return sighand;  in __lock_task_sighand()
1644 		spin_lock_irqsave(&p->sighand->siglock, flags);  in force_sigsegv()
1645 		p->sighand->action[sig - 1].sa.sa_handler = SIG_DFL;  in force_sigsegv()
1646 		spin_unlock_irqrestore(&p->sighand->siglock, flags);  in force_sigsegv()
1819 	spinlock_t *lock = &current->sighand->siglock;  in sigqueue_free()
1967 	psig = tsk->parent->sighand;  in do_notify_parent()
2018 	struct sighand_struct *sighand;  in do_notify_parent_cldstop()  local
2058 	sighand = parent->sighand;  in do_notify_parent_cldstop()
2059 	spin_lock_irqsave(&sighand->siglock, flags);  in do_notify_parent_cldstop()
2060 	if (sighand->action[SIGCHLD-1].sa.sa_handler != SIG_IGN &&  in do_notify_parent_cldstop()
2061 	    !(sighand->action[SIGCHLD-1].sa.sa_flags & SA_NOCLDSTOP))  in do_notify_parent_cldstop()
2067 	spin_unlock_irqrestore(&sighand->siglock, flags);  in do_notify_parent_cldstop()
2116 	__releases(&current->sighand->siglock)  in ptrace_stop()
2117 	__acquires(&current->sighand->siglock)  in ptrace_stop()
2133 		spin_unlock_irq(&current->sighand->siglock);  in ptrace_stop()
2135 		spin_lock_irq(&current->sighand->siglock);  in ptrace_stop()
2183 	spin_unlock_irq(&current->sighand->siglock);  in ptrace_stop()
2238 	spin_lock_irq(&current->sighand->siglock);  in ptrace_stop()
2272 	spin_lock_irq(&current->sighand->siglock);  in ptrace_notify()
2274 	spin_unlock_irq(&current->sighand->siglock);  in ptrace_notify()
2300 	__releases(&current->sighand->siglock)  in do_signal_stop()
2371 		spin_unlock_irq(&current->sighand->siglock);  in do_signal_stop()
2447 	__releases(&current->sighand->siglock)  in do_freezer_trap()
2456 		spin_unlock_irq(&current->sighand->siglock);  in do_freezer_trap()
2468 	spin_unlock_irq(&current->sighand->siglock);  in do_freezer_trap()
2523 	struct sighand_struct *sighand = current->sighand;  in get_signal()  local
2541 	spin_lock_irq(&sighand->siglock);  in get_signal()
2557 		spin_unlock_irq(&sighand->siglock);  in get_signal()
2583 				&sighand->action[SIGKILL - 1]);  in get_signal()
2599 				spin_unlock_irq(&sighand->siglock);  in get_signal()
2611 			spin_unlock_irq(&sighand->siglock);  in get_signal()
2635 		ka = &sighand->action[signr-1];  in get_signal()
2684 				spin_unlock_irq(&sighand->siglock);  in get_signal()
2691 				spin_lock_irq(&sighand->siglock);  in get_signal()
2707 		spin_unlock_irq(&sighand->siglock);  in get_signal()
2737 	spin_unlock_irq(&sighand->siglock);  in get_signal()
2827 	spin_lock_irq(&tsk->sighand->siglock);  in exit_signals()
2847 	spin_unlock_irq(&tsk->sighand->siglock);  in exit_signals()
2914 	spin_lock_irq(&tsk->sighand->siglock);  in __set_current_blocked()
2916 	spin_unlock_irq(&tsk->sighand->siglock);  in __set_current_blocked()
3067 	spin_lock_irq(&current->sighand->siglock);  in do_sigpending()
3070 	spin_unlock_irq(&current->sighand->siglock);  in do_sigpending()
3453 	spin_lock_irq(&tsk->sighand->siglock);  in do_sigtimedwait()
3465 		spin_unlock_irq(&tsk->sighand->siglock);  in do_sigtimedwait()
3470 		spin_lock_irq(&tsk->sighand->siglock);  in do_sigtimedwait()
3475 	spin_unlock_irq(&tsk->sighand->siglock);  in do_sigtimedwait()
3928 	spin_lock_irq(&current->sighand->siglock);  in kernel_sigaction()
3929 	current->sighand->action[sig - 1].sa.sa_handler = action;  in kernel_sigaction()
3940 	spin_unlock_irq(&current->sighand->siglock);  in kernel_sigaction()
3958 	k = &p->sighand->action[sig-1];  in do_sigaction()
3960 	spin_lock_irq(&p->sighand->siglock);  in do_sigaction()
3990 	spin_unlock_irq(&p->sighand->siglock);  in do_sigaction()
4589 	if (!spin_trylock(&t->sighand->siglock)) {  in kdb_send_sig()
4598 		spin_unlock(&t->sighand->siglock);  in kdb_send_sig()
4608 	spin_unlock(&t->sighand->siglock);  in kdb_send_sig()