58 	return t->sighand->action[sig - 1].sa.sa_handler;  in sig_handler()
430 	spin_lock_irqsave(&t->sighand->siglock, flags);  in flush_signals()
432 	spin_unlock_irqrestore(&t->sighand->siglock, flags);  in flush_signals()
463 	spin_lock_irqsave(&tsk->sighand->siglock, flags);  in flush_itimer_signals()
466 	spin_unlock_irqrestore(&tsk->sighand->siglock, flags);  in flush_itimer_signals()
474 		t->sighand->action[i].sa.sa_handler = SIG_IGN;  in ignore_signals()
487 	struct k_sigaction *ka = &t->sighand->action[0];  in flush_signal_handlers()
502 	void __user *handler = tsk->sighand->action[sig-1].sa.sa_handler;  in unhandled_signal()
525 	spin_lock_irqsave(&current->sighand->siglock, flags);  in block_all_signals()
529 	spin_unlock_irqrestore(&current->sighand->siglock, flags);  in block_all_signals()
539 	spin_lock_irqsave(&current->sighand->siglock, flags);  in unblock_all_signals()
543 	spin_unlock_irqrestore(&current->sighand->siglock, flags);  in unblock_all_signals()
672 		spin_unlock(&tsk->sighand->siglock);  in dequeue_signal()
674 		spin_lock(&tsk->sighand->siglock);  in dequeue_signal()
819 	assert_spin_locked(&t->sighand->siglock);  in ptrace_trap_notify()
1031 	assert_spin_locked(&t->sighand->siglock);  in __send_signal()
1217 	spin_lock_irqsave(&t->sighand->siglock, flags);  in force_sig_info()
1218 	action = &t->sighand->action[sig-1];  in force_sig_info()
1231 	spin_unlock_irqrestore(&t->sighand->siglock, flags);  in force_sig_info()
1263 	struct sighand_struct *sighand;  in __lock_task_sighand()  local
1272 		sighand = rcu_dereference(tsk->sighand);  in __lock_task_sighand()
1273 		if (unlikely(sighand == NULL)) {  in __lock_task_sighand()
1289 		spin_lock(&sighand->siglock);  in __lock_task_sighand()
1290 		if (likely(sighand == tsk->sighand)) {  in __lock_task_sighand()
1294 		spin_unlock(&sighand->siglock);  in __lock_task_sighand()
1299 	return sighand;  in __lock_task_sighand()
1502 		spin_lock_irqsave(&p->sighand->siglock, flags);  in force_sigsegv()
1503 		p->sighand->action[sig - 1].sa.sa_handler = SIG_DFL;  in force_sigsegv()
1504 		spin_unlock_irqrestore(&p->sighand->siglock, flags);  in force_sigsegv()
1550 	spinlock_t *lock = &current->sighand->siglock;  in sigqueue_free()
1681 	psig = tsk->parent->sighand;  in do_notify_parent()
1732 	struct sighand_struct *sighand;  in do_notify_parent_cldstop()  local
1771 	sighand = parent->sighand;  in do_notify_parent_cldstop()
1772 	spin_lock_irqsave(&sighand->siglock, flags);  in do_notify_parent_cldstop()
1773 	if (sighand->action[SIGCHLD-1].sa.sa_handler != SIG_IGN &&  in do_notify_parent_cldstop()
1774 	    !(sighand->action[SIGCHLD-1].sa.sa_flags & SA_NOCLDSTOP))  in do_notify_parent_cldstop()
1780 	spin_unlock_irqrestore(&sighand->siglock, flags);  in do_notify_parent_cldstop()
1829 	__releases(&current->sighand->siglock)  in ptrace_stop()
1830 	__acquires(&current->sighand->siglock)  in ptrace_stop()
1846 		spin_unlock_irq(&current->sighand->siglock);  in ptrace_stop()
1848 		spin_lock_irq(&current->sighand->siglock);  in ptrace_stop()
1883 	spin_unlock_irq(&current->sighand->siglock);  in ptrace_stop()
1936 	spin_lock_irq(&current->sighand->siglock);  in ptrace_stop()
1970 	spin_lock_irq(&current->sighand->siglock);  in ptrace_notify()
1972 	spin_unlock_irq(&current->sighand->siglock);  in ptrace_notify()
1998 	__releases(&current->sighand->siglock)  in do_signal_stop()
2069 		spin_unlock_irq(&current->sighand->siglock);  in do_signal_stop()
2183 	struct sighand_struct *sighand = current->sighand;  in get_signal()  local
2201 	spin_lock_irq(&sighand->siglock);  in get_signal()
2217 		spin_unlock_irq(&sighand->siglock);  in get_signal()
2247 			spin_unlock_irq(&sighand->siglock);  in get_signal()
2262 		ka = &sighand->action[signr-1];  in get_signal()
2311 				spin_unlock_irq(&sighand->siglock);  in get_signal()
2318 				spin_lock_irq(&sighand->siglock);  in get_signal()
2333 		spin_unlock_irq(&sighand->siglock);  in get_signal()
2361 	spin_unlock_irq(&sighand->siglock);  in get_signal()
2451 	spin_lock_irq(&tsk->sighand->siglock);  in exit_signals()
2471 	spin_unlock_irq(&tsk->sighand->siglock);  in exit_signals()
2542 	spin_lock_irq(&tsk->sighand->siglock);  in __set_current_blocked()
2544 	spin_unlock_irq(&tsk->sighand->siglock);  in __set_current_blocked()
2663 	spin_lock_irq(&current->sighand->siglock);  in do_sigpending()
2666 	spin_unlock_irq(&current->sighand->siglock);  in do_sigpending()
2829 	spin_lock_irq(&tsk->sighand->siglock);  in do_sigtimedwait()
2841 		spin_unlock_irq(&tsk->sighand->siglock);  in do_sigtimedwait()
2845 		spin_lock_irq(&tsk->sighand->siglock);  in do_sigtimedwait()
2850 	spin_unlock_irq(&tsk->sighand->siglock);  in do_sigtimedwait()
3085 	spin_lock_irq(&current->sighand->siglock);  in kernel_sigaction()
3086 	current->sighand->action[sig - 1].sa.sa_handler = action;  in kernel_sigaction()
3097 	spin_unlock_irq(&current->sighand->siglock);  in kernel_sigaction()
3110 	k = &p->sighand->action[sig-1];  in do_sigaction()
3112 	spin_lock_irq(&p->sighand->siglock);  in do_sigaction()
3140 	spin_unlock_irq(&p->sighand->siglock);  in do_sigaction()
3652 	if (!spin_trylock(&t->sighand->siglock)) {  in kdb_send_sig_info()
3658 	spin_unlock(&t->sighand->siglock);  in kdb_send_sig_info()