48 	return t->sighand->action[sig - 1].sa.sa_handler;  in sig_handler()
245 	spin_lock_irqsave(&t->sighand->siglock, flags);  in flush_signals()
249 	spin_unlock_irqrestore(&t->sighand->siglock, flags);  in flush_signals()
280 	spin_lock_irqsave(&tsk->sighand->siglock, flags);  in flush_itimer_signals()
283 	spin_unlock_irqrestore(&tsk->sighand->siglock, flags);  in flush_itimer_signals()
291 		t->sighand->action[i].sa.sa_handler = SIG_IGN;  in ignore_signals()
304 	struct k_sigaction *ka = &t->sighand->action[0];  in flush_signal_handlers()
316 	void __user *handler = tsk->sighand->action[sig-1].sa.sa_handler;  in unhandled_signal()
338 	spin_lock_irqsave(&current->sighand->siglock, flags);  in block_all_signals()
342 	spin_unlock_irqrestore(&current->sighand->siglock, flags);  in block_all_signals()
352 	spin_lock_irqsave(&current->sighand->siglock, flags);  in unblock_all_signals()
356 	spin_unlock_irqrestore(&current->sighand->siglock, flags);  in unblock_all_signals()
484 		spin_unlock(&tsk->sighand->siglock);  in dequeue_signal()
486 		spin_lock(&tsk->sighand->siglock);  in dequeue_signal()
824 	assert_spin_locked(&t->sighand->siglock);  in send_signal()
956 	spin_lock_irqsave(&t->sighand->siglock, flags);  in force_sig_info()
957 	action = &t->sighand->action[sig-1];  in force_sig_info()
970 	spin_unlock_irqrestore(&t->sighand->siglock, flags);  in force_sig_info()
1011 	struct sighand_struct *sighand;  in lock_task_sighand()  local
1015 		sighand = rcu_dereference(tsk->sighand);  in lock_task_sighand()
1016 		if (unlikely(sighand == NULL))  in lock_task_sighand()
1019 		spin_lock_irqsave(&sighand->siglock, *flags);  in lock_task_sighand()
1020 		if (likely(sighand == tsk->sighand))  in lock_task_sighand()
1022 		spin_unlock_irqrestore(&sighand->siglock, *flags);  in lock_task_sighand()
1026 	return sighand;  in lock_task_sighand()
1133 	if (sig && p->sighand) {  in kill_pid_info_as_uid()
1135 		spin_lock_irqsave(&p->sighand->siglock, flags);  in kill_pid_info_as_uid()
1137 		spin_unlock_irqrestore(&p->sighand->siglock, flags);  in kill_pid_info_as_uid()
1207 	spin_lock_irqsave(&p->sighand->siglock, flags);  in send_sig_info()
1209 	spin_unlock_irqrestore(&p->sighand->siglock, flags);  in send_sig_info()
1239 		spin_lock_irqsave(&p->sighand->siglock, flags);  in force_sigsegv()
1240 		p->sighand->action[sig - 1].sa.sa_handler = SIG_DFL;  in force_sigsegv()
1241 		spin_unlock_irqrestore(&p->sighand->siglock, flags);  in force_sigsegv()
1287 	spinlock_t *lock = &current->sighand->siglock;  in sigqueue_free()
1414 	psig = tsk->parent->sighand;  in do_notify_parent()
1451 	struct sighand_struct *sighand;  in do_notify_parent_cldstop()  local
1488 	sighand = parent->sighand;  in do_notify_parent_cldstop()
1489 	spin_lock_irqsave(&sighand->siglock, flags);  in do_notify_parent_cldstop()
1490 	if (sighand->action[SIGCHLD-1].sa.sa_handler != SIG_IGN &&  in do_notify_parent_cldstop()
1491 	    !(sighand->action[SIGCHLD-1].sa.sa_flags & SA_NOCLDSTOP))  in do_notify_parent_cldstop()
1497 	spin_unlock_irqrestore(&sighand->siglock, flags);  in do_notify_parent_cldstop()
1555 		spin_unlock_irq(&current->sighand->siglock);  in ptrace_stop()
1557 		spin_lock_irq(&current->sighand->siglock);  in ptrace_stop()
1574 	spin_unlock_irq(&current->sighand->siglock);  in ptrace_stop()
1611 	spin_lock_irq(&current->sighand->siglock);  in ptrace_stop()
1635 	spin_lock_irq(&current->sighand->siglock);  in ptrace_notify()
1637 	spin_unlock_irq(&current->sighand->siglock);  in ptrace_notify()
1712 	spin_unlock_irq(&current->sighand->siglock);  in do_signal_stop()
1759 	struct sighand_struct *sighand = current->sighand;  in get_signal_to_deliver()  local
1772 	spin_lock_irq(&sighand->siglock);  in get_signal_to_deliver()
1782 		spin_unlock_irq(&sighand->siglock);  in get_signal_to_deliver()
1824 			ka = &sighand->action[signr-1];  in get_signal_to_deliver()
1864 				spin_unlock_irq(&sighand->siglock);  in get_signal_to_deliver()
1871 				spin_lock_irq(&sighand->siglock);  in get_signal_to_deliver()
1886 		spin_unlock_irq(&sighand->siglock);  in get_signal_to_deliver()
1913 	spin_unlock_irq(&sighand->siglock);  in get_signal_to_deliver()
1927 	spin_lock_irq(&tsk->sighand->siglock);  in exit_signals()
1950 	spin_unlock_irq(&tsk->sighand->siglock);  in exit_signals()
2003 	spin_lock_irq(&current->sighand->siglock);  in sigprocmask()
2022 	spin_unlock_irq(&current->sighand->siglock);  in sigprocmask()
2049 		spin_lock_irq(&current->sighand->siglock);  in SYSCALL_DEFINE4()
2051 		spin_unlock_irq(&current->sighand->siglock);  in SYSCALL_DEFINE4()
2071 	spin_lock_irq(&current->sighand->siglock);  in do_sigpending()
2074 	spin_unlock_irq(&current->sighand->siglock);  in do_sigpending()
2190 	spin_lock_irq(&current->sighand->siglock);  in SYSCALL_DEFINE4()
2205 			spin_unlock_irq(&current->sighand->siglock);  in SYSCALL_DEFINE4()
2209 			spin_lock_irq(&current->sighand->siglock);  in SYSCALL_DEFINE4()
2216 	spin_unlock_irq(&current->sighand->siglock);  in SYSCALL_DEFINE4()
2340 	k = &t->sighand->action[sig-1];  in do_sigaction()
2342 	spin_lock_irq(&current->sighand->siglock);  in do_sigaction()
2372 	spin_unlock_irq(&current->sighand->siglock);  in do_sigaction()
2465 		spin_lock_irq(&current->sighand->siglock);  in SYSCALL_DEFINE3()
2485 		spin_unlock_irq(&current->sighand->siglock);  in SYSCALL_DEFINE3()
2547 	spin_lock_irq(&current->sighand->siglock);  in SYSCALL_DEFINE1()
2553 	spin_unlock_irq(&current->sighand->siglock);  in SYSCALL_DEFINE1()
2602 	spin_lock_irq(&current->sighand->siglock);  in SYSCALL_DEFINE2()
2606 	spin_unlock_irq(&current->sighand->siglock);  in SYSCALL_DEFINE2()