1 files changed, 139 insertions, 114 deletions

diff --git a/net/iucv/iucv.c b/net/iucv/iucv.c
index f7db676de77..da787930df0 100644
--- a/net/iucv/iucv.c
+++ b/net/iucv/iucv.c
@@ -36,6 +36,7 @@
 #define KMSG_COMPONENT "iucv"
 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
 
+#include <linux/kernel_stat.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/spinlock.h>
@@ -50,10 +51,10 @@
 #include <linux/cpu.h>
 #include <linux/reboot.h>
 #include <net/iucv/iucv.h>
-#include <asm/atomic.h>
+#include <linux/atomic.h>
 #include <asm/ebcdic.h>
 #include <asm/io.h>
-#include <asm/s390_ext.h>
+#include <asm/irq.h>
 #include <asm/smp.h>
 
 /*
@@ -127,8 +128,8 @@ struct iucv_irq_list {
 };
 
 static struct iucv_irq_data *iucv_irq_data[NR_CPUS];
-static cpumask_t iucv_buffer_cpumask = CPU_MASK_NONE;
-static cpumask_t iucv_irq_cpumask = CPU_MASK_NONE;
+static cpumask_t iucv_buffer_cpumask = { CPU_BITS_NONE };
+static cpumask_t iucv_irq_cpumask = { CPU_BITS_NONE };
 
 /*
  * Queue of interrupt buffers lock for delivery via the tasklet
@@ -405,7 +406,7 @@ static void iucv_allow_cpu(void *data)
 	parm->set_mask.ipmask = 0xf8;
 	iucv_call_b2f0(IUCV_SETCONTROLMASK, parm);
 	/* Set indication that iucv interrupts are allowed for this cpu. */
-	cpu_set(cpu, iucv_irq_cpumask);
+	cpumask_set_cpu(cpu, &iucv_irq_cpumask);
 }
 
 /**
@@ -425,7 +426,7 @@ static void iucv_block_cpu(void *data)
 	iucv_call_b2f0(IUCV_SETMASK, parm);
 
 	/* Clear indication that iucv interrupts are allowed for this cpu. */
-	cpu_clear(cpu, iucv_irq_cpumask);
+	cpumask_clear_cpu(cpu, &iucv_irq_cpumask);
 }
 
 /**
@@ -450,7 +451,7 @@ static void iucv_block_cpu_almost(void *data)
 	iucv_call_b2f0(IUCV_SETCONTROLMASK, parm);
 
 	/* Clear indication that iucv interrupts are allowed for this cpu. */
-	cpu_clear(cpu, iucv_irq_cpumask);
+	cpumask_clear_cpu(cpu, &iucv_irq_cpumask);
 }
 
 /**
@@ -465,7 +466,7 @@ static void iucv_declare_cpu(void *data)
 	union iucv_param *parm;
 	int rc;
 
-	if (cpu_isset(cpu, iucv_buffer_cpumask))
+	if (cpumask_test_cpu(cpu, &iucv_buffer_cpumask))
 		return;
 
 	/* Declare interrupt buffer. */
@@ -498,9 +499,9 @@ static void iucv_declare_cpu(void *data)
 	}
 
 	/* Set indication that an iucv buffer exists for this cpu. */
-	cpu_set(cpu, iucv_buffer_cpumask);
+	cpumask_set_cpu(cpu, &iucv_buffer_cpumask);
 
-	if (iucv_nonsmp_handler == 0 || cpus_empty(iucv_irq_cpumask))
+	if (iucv_nonsmp_handler == 0 || cpumask_empty(&iucv_irq_cpumask))
 		/* Enable iucv interrupts on this cpu. */
 		iucv_allow_cpu(NULL);
 	else
@@ -519,7 +520,7 @@ static void iucv_retrieve_cpu(void *data)
 	int cpu = smp_processor_id();
 	union iucv_param *parm;
 
-	if (!cpu_isset(cpu, iucv_buffer_cpumask))
+	if (!cpumask_test_cpu(cpu, &iucv_buffer_cpumask))
 		return;
 
 	/* Block iucv interrupts. */
@@ -530,7 +531,7 @@ static void iucv_retrieve_cpu(void *data)
 	iucv_call_b2f0(IUCV_RETRIEVE_BUFFER, parm);
 
 	/* Clear indication that an iucv buffer exists for this cpu. */
-	cpu_clear(cpu, iucv_buffer_cpumask);
+	cpumask_clear_cpu(cpu, &iucv_buffer_cpumask);
 }
 
 /**
@@ -545,8 +546,8 @@ static void iucv_setmask_mp(void)
 	get_online_cpus();
 	for_each_online_cpu(cpu)
 		/* Enable all cpus with a declared buffer. */
-		if (cpu_isset(cpu, iucv_buffer_cpumask) &&
-		    !cpu_isset(cpu, iucv_irq_cpumask))
+		if (cpumask_test_cpu(cpu, &iucv_buffer_cpumask) &&
+		    !cpumask_test_cpu(cpu, &iucv_irq_cpumask))
 			smp_call_function_single(cpu, iucv_allow_cpu,
 						 NULL, 1);
 	put_online_cpus();
@@ -563,9 +564,9 @@ static void iucv_setmask_up(void)
 	int cpu;
 
 	/* Disable all cpu but the first in cpu_irq_cpumask. */
-	cpumask = iucv_irq_cpumask;
-	cpu_clear(first_cpu(iucv_irq_cpumask), cpumask);
-	for_each_cpu_mask_nr(cpu, cpumask)
+	cpumask_copy(&cpumask, &iucv_irq_cpumask);
+	cpumask_clear_cpu(cpumask_first(&iucv_irq_cpumask), &cpumask);
+	for_each_cpu(cpu, &cpumask)
 		smp_call_function_single(cpu, iucv_block_cpu, NULL, 1);
 }
 
@@ -592,7 +593,7 @@ static int iucv_enable(void)
 	rc = -EIO;
 	for_each_online_cpu(cpu)
 		smp_call_function_single(cpu, iucv_declare_cpu, NULL, 1);
-	if (cpus_empty(iucv_buffer_cpumask))
+	if (cpumask_empty(&iucv_buffer_cpumask))
 		/* No cpu could declare an iucv buffer. */
 		goto out;
 	put_online_cpus();
@@ -620,7 +621,43 @@ static void iucv_disable(void)
 	put_online_cpus();
 }
 
-static int __cpuinit iucv_cpu_notify(struct notifier_block *self,
+static void free_iucv_data(int cpu)
+{
+	kfree(iucv_param_irq[cpu]);
+	iucv_param_irq[cpu] = NULL;
+	kfree(iucv_param[cpu]);
+	iucv_param[cpu] = NULL;
+	kfree(iucv_irq_data[cpu]);
+	iucv_irq_data[cpu] = NULL;
+}
+
+static int alloc_iucv_data(int cpu)
+{
+	/* Note: GFP_DMA used to get memory below 2G */
+	iucv_irq_data[cpu] = kmalloc_node(sizeof(struct iucv_irq_data),
+			     GFP_KERNEL|GFP_DMA, cpu_to_node(cpu));
+	if (!iucv_irq_data[cpu])
+		goto out_free;
+
+	/* Allocate parameter blocks. */
+	iucv_param[cpu] = kmalloc_node(sizeof(union iucv_param),
+			  GFP_KERNEL|GFP_DMA, cpu_to_node(cpu));
+	if (!iucv_param[cpu])
+		goto out_free;
+
+	iucv_param_irq[cpu] = kmalloc_node(sizeof(union iucv_param),
+			  GFP_KERNEL|GFP_DMA, cpu_to_node(cpu));
+	if (!iucv_param_irq[cpu])
+		goto out_free;
+
+	return 0;
+
+out_free:
+	free_iucv_data(cpu);
+	return -ENOMEM;
+}
+
+static int iucv_cpu_notify(struct notifier_block *self,
 				     unsigned long action, void *hcpu)
 {
 	cpumask_t cpumask;
@@ -629,38 +666,14 @@ static int __cpuinit iucv_cpu_notify(struct notifier_block *self,
 	switch (action) {
 	case CPU_UP_PREPARE:
 	case CPU_UP_PREPARE_FROZEN:
-		iucv_irq_data[cpu] = kmalloc_node(sizeof(struct iucv_irq_data),
-					GFP_KERNEL|GFP_DMA, cpu_to_node(cpu));
-		if (!iucv_irq_data[cpu])
-			return notifier_from_errno(-ENOMEM);
-
-		iucv_param[cpu] = kmalloc_node(sizeof(union iucv_param),
-				     GFP_KERNEL|GFP_DMA, cpu_to_node(cpu));
-		if (!iucv_param[cpu]) {
-			kfree(iucv_irq_data[cpu]);
-			iucv_irq_data[cpu] = NULL;
-			return notifier_from_errno(-ENOMEM);
-		}
-		iucv_param_irq[cpu] = kmalloc_node(sizeof(union iucv_param),
-					GFP_KERNEL|GFP_DMA, cpu_to_node(cpu));
-		if (!iucv_param_irq[cpu]) {
-			kfree(iucv_param[cpu]);
-			iucv_param[cpu] = NULL;
-			kfree(iucv_irq_data[cpu]);
-			iucv_irq_data[cpu] = NULL;
+		if (alloc_iucv_data(cpu))
 			return notifier_from_errno(-ENOMEM);
-		}
 		break;
 	case CPU_UP_CANCELED:
 	case CPU_UP_CANCELED_FROZEN:
 	case CPU_DEAD:
 	case CPU_DEAD_FROZEN:
-		kfree(iucv_param_irq[cpu]);
-		iucv_param_irq[cpu] = NULL;
-		kfree(iucv_param[cpu]);
-		iucv_param[cpu] = NULL;
-		kfree(iucv_irq_data[cpu]);
-		iucv_irq_data[cpu] = NULL;
+		free_iucv_data(cpu);
 		break;
 	case CPU_ONLINE:
 	case CPU_ONLINE_FROZEN:
@@ -674,15 +687,16 @@ static int __cpuinit iucv_cpu_notify(struct notifier_block *self,
 	case CPU_DOWN_PREPARE_FROZEN:
 		if (!iucv_path_table)
 			break;
-		cpumask = iucv_buffer_cpumask;
-		cpu_clear(cpu, cpumask);
-		if (cpus_empty(cpumask))
+		cpumask_copy(&cpumask, &iucv_buffer_cpumask);
+		cpumask_clear_cpu(cpu, &cpumask);
+		if (cpumask_empty(&cpumask))
 			/* Can't offline last IUCV enabled cpu. */
 			return notifier_from_errno(-EINVAL);
 		smp_call_function_single(cpu, iucv_retrieve_cpu, NULL, 1);
-		if (cpus_empty(iucv_irq_cpumask))
-			smp_call_function_single(first_cpu(iucv_buffer_cpumask),
-						 iucv_allow_cpu, NULL, 1);
+		if (cpumask_empty(&iucv_irq_cpumask))
+			smp_call_function_single(
+				cpumask_first(&iucv_buffer_cpumask),
+				iucv_allow_cpu, NULL, 1);
 		break;
 	}
 	return NOTIFY_OK;
@@ -734,7 +748,7 @@ static void iucv_cleanup_queue(void)
 	struct iucv_irq_list *p, *n;
 
 	/*
-	 * When a path is severed, the pathid can be reused immediatly
+	 * When a path is severed, the pathid can be reused immediately
 	 * on a iucv connect or a connection pending interrupt. Remove
 	 * all entries from the task queue that refer to a stale pathid
 	 * (iucv_path_table[ix] == NULL). Only then do the iucv connect
@@ -806,7 +820,7 @@ void iucv_unregister(struct iucv_handler *handler, int smp)
 	spin_lock_bh(&iucv_table_lock);
 	/* Remove handler from the iucv_handler_list. */
 	list_del_init(&handler->list);
-	/* Sever all pathids still refering to the handler. */
+	/* Sever all pathids still referring to the handler. */
 	list_for_each_entry_safe(p, n, &handler->paths, list) {
 		iucv_sever_pathid(p->pathid, NULL);
 		iucv_path_table[p->pathid] = NULL;
@@ -827,14 +841,17 @@ EXPORT_SYMBOL(iucv_unregister);
 static int iucv_reboot_event(struct notifier_block *this,
 			     unsigned long event, void *ptr)
 {
-	int i, rc;
+	int i;
+
+	if (cpumask_empty(&iucv_irq_cpumask))
+		return NOTIFY_DONE;
 
 	get_online_cpus();
-	on_each_cpu(iucv_block_cpu, NULL, 1);
+	on_each_cpu_mask(&iucv_irq_cpumask, iucv_block_cpu, NULL, 1);
 	preempt_disable();
 	for (i = 0; i < iucv_max_pathid; i++) {
 		if (iucv_path_table[i])
-			rc = iucv_sever_pathid(i, NULL);
+			iucv_sever_pathid(i, NULL);
 	}
 	preempt_enable();
 	put_online_cpus();
@@ -865,7 +882,7 @@ int iucv_path_accept(struct iucv_path *path, struct iucv_handler *handler,
 	int rc;
 
 	local_bh_disable();
-	if (cpus_empty(iucv_buffer_cpumask)) {
+	if (cpumask_empty(&iucv_buffer_cpumask)) {
 		rc = -EIO;
 		goto out;
 	}
@@ -914,7 +931,7 @@ int iucv_path_connect(struct iucv_path *path, struct iucv_handler *handler,
 
 	spin_lock_bh(&iucv_table_lock);
 	iucv_cleanup_queue();
-	if (cpus_empty(iucv_buffer_cpumask)) {
+	if (cpumask_empty(&iucv_buffer_cpumask)) {
 		rc = -EIO;
 		goto out;
 	}
@@ -974,7 +991,7 @@ int iucv_path_quiesce(struct iucv_path *path, u8 userdata[16])
 	int rc;
 
 	local_bh_disable();
-	if (cpus_empty(iucv_buffer_cpumask)) {
+	if (cpumask_empty(&iucv_buffer_cpumask)) {
 		rc = -EIO;
 		goto out;
 	}
@@ -1006,7 +1023,7 @@ int iucv_path_resume(struct iucv_path *path, u8 userdata[16])
 	int rc;
 
 	local_bh_disable();
-	if (cpus_empty(iucv_buffer_cpumask)) {
+	if (cpumask_empty(&iucv_buffer_cpumask)) {
 		rc = -EIO;
 		goto out;
 	}
@@ -1035,7 +1052,7 @@ int iucv_path_sever(struct iucv_path *path, u8 userdata[16])
 	int rc;
 
 	preempt_disable();
-	if (cpus_empty(iucv_buffer_cpumask)) {
+	if (cpumask_empty(&iucv_buffer_cpumask)) {
 		rc = -EIO;
 		goto out;
 	}
@@ -1069,7 +1086,7 @@ int iucv_message_purge(struct iucv_path *path, struct iucv_message *msg,
 	int rc;
 
 	local_bh_disable();
-	if (cpus_empty(iucv_buffer_cpumask)) {
+	if (cpumask_empty(&iucv_buffer_cpumask)) {
 		rc = -EIO;
 		goto out;
 	}
@@ -1161,7 +1178,7 @@ int __iucv_message_receive(struct iucv_path *path, struct iucv_message *msg,
 	if (msg->flags & IUCV_IPRMDATA)
 		return iucv_message_receive_iprmdata(path, msg, flags,
 						     buffer, size, residual);
-	if (cpus_empty(iucv_buffer_cpumask)) {
+	 if (cpumask_empty(&iucv_buffer_cpumask)) {
 		rc = -EIO;
 		goto out;
 	}
@@ -1234,7 +1251,7 @@ int iucv_message_reject(struct iucv_path *path, struct iucv_message *msg)
 	int rc;
 
 	local_bh_disable();
-	if (cpus_empty(iucv_buffer_cpumask)) {
+	if (cpumask_empty(&iucv_buffer_cpumask)) {
 		rc = -EIO;
 		goto out;
 	}
@@ -1273,7 +1290,7 @@ int iucv_message_reply(struct iucv_path *path, struct iucv_message *msg,
 	int rc;
 
 	local_bh_disable();
-	if (cpus_empty(iucv_buffer_cpumask)) {
+	if (cpumask_empty(&iucv_buffer_cpumask)) {
 		rc = -EIO;
 		goto out;
 	}
@@ -1323,7 +1340,7 @@ int __iucv_message_send(struct iucv_path *path, struct iucv_message *msg,
 	union iucv_param *parm;
 	int rc;
 
-	if (cpus_empty(iucv_buffer_cpumask)) {
+	if (cpumask_empty(&iucv_buffer_cpumask)) {
 		rc = -EIO;
 		goto out;
 	}
@@ -1410,7 +1427,7 @@ int iucv_message_send2way(struct iucv_path *path, struct iucv_message *msg,
 	int rc;
 
 	local_bh_disable();
-	if (cpus_empty(iucv_buffer_cpumask)) {
+	if (cpumask_empty(&iucv_buffer_cpumask)) {
 		rc = -EIO;
 		goto out;
 	}
@@ -1798,12 +1815,13 @@ static void iucv_work_fn(struct work_struct *work)
  * Handles external interrupts coming in from CP.
  * Places the interrupt buffer on a queue and schedules iucv_tasklet_fn().
  */
-static void iucv_external_interrupt(unsigned int ext_int_code,
+static void iucv_external_interrupt(struct ext_code ext_code,
 				    unsigned int param32, unsigned long param64)
 {
 	struct iucv_irq_data *p;
 	struct iucv_irq_list *work;
 
+	inc_irq_stat(IRQEXT_IUC);
 	p = iucv_irq_data[smp_processor_id()];
 	if (p->ippathid >= iucv_max_pathid) {
 		WARN_ON(p->ippathid >= iucv_max_pathid);
@@ -1886,7 +1904,7 @@ static int iucv_pm_freeze(struct device *dev)
 	printk(KERN_WARNING "iucv_pm_freeze\n");
 #endif
 	if (iucv_pm_state != IUCV_PM_FREEZING) {
-		for_each_cpu_mask_nr(cpu, iucv_irq_cpumask)
+		for_each_cpu(cpu, &iucv_irq_cpumask)
 			smp_call_function_single(cpu, iucv_block_cpu_almost,
 						 NULL, 1);
 		cancel_work_sync(&iucv_work);
@@ -1926,7 +1944,7 @@ static int iucv_pm_thaw(struct device *dev)
 		if (rc)
 			goto out;
 	}
-	if (cpus_empty(iucv_irq_cpumask)) {
+	if (cpumask_empty(&iucv_irq_cpumask)) {
 		if (iucv_nonsmp_handler)
 			/* enable interrupts on one cpu */
 			iucv_allow_cpu(NULL);
@@ -1959,7 +1977,7 @@ static int iucv_pm_restore(struct device *dev)
 		pr_warning("Suspending Linux did not completely close all IUCV "
 			"connections\n");
 	iucv_pm_state = IUCV_PM_RESTORING;
-	if (cpus_empty(iucv_irq_cpumask)) {
+	if (cpumask_empty(&iucv_irq_cpumask)) {
 		rc = iucv_query_maxconn();
 		rc = iucv_enable();
 		if (rc)
@@ -1971,6 +1989,27 @@ out:
 	return rc;
 }
 
+struct iucv_interface iucv_if = {
+	.message_receive = iucv_message_receive,
+	.__message_receive = __iucv_message_receive,
+	.message_reply = iucv_message_reply,
+	.message_reject = iucv_message_reject,
+	.message_send = iucv_message_send,
+	.__message_send = __iucv_message_send,
+	.message_send2way = iucv_message_send2way,
+	.message_purge = iucv_message_purge,
+	.path_accept = iucv_path_accept,
+	.path_connect = iucv_path_connect,
+	.path_quiesce = iucv_path_quiesce,
+	.path_resume = iucv_path_resume,
+	.path_sever = iucv_path_sever,
+	.iucv_register = iucv_register,
+	.iucv_unregister = iucv_unregister,
+	.bus = NULL,
+	.root = NULL,
+};
+EXPORT_SYMBOL(iucv_if);
+
 /**
  * iucv_init
  *
@@ -1985,45 +2024,33 @@ static int __init iucv_init(void)
 		rc = -EPROTONOSUPPORT;
 		goto out;
 	}
+	ctl_set_bit(0, 1);
 	rc = iucv_query_maxconn();
 	if (rc)
-		goto out;
-	rc = register_external_interrupt(0x4000, iucv_external_interrupt);
+		goto out_ctl;
+	rc = register_external_irq(EXT_IRQ_IUCV, iucv_external_interrupt);
 	if (rc)
-		goto out;
+		goto out_ctl;
 	iucv_root = root_device_register("iucv");
 	if (IS_ERR(iucv_root)) {
 		rc = PTR_ERR(iucv_root);
 		goto out_int;
 	}
 
-	for_each_online_cpu(cpu) {
-		/* Note: GFP_DMA used to get memory below 2G */
-		iucv_irq_data[cpu] = kmalloc_node(sizeof(struct iucv_irq_data),
-				     GFP_KERNEL|GFP_DMA, cpu_to_node(cpu));
-		if (!iucv_irq_data[cpu]) {
-			rc = -ENOMEM;
-			goto out_free;
-		}
+	cpu_notifier_register_begin();
 
-		/* Allocate parameter blocks. */
-		iucv_param[cpu] = kmalloc_node(sizeof(union iucv_param),
-				  GFP_KERNEL|GFP_DMA, cpu_to_node(cpu));
-		if (!iucv_param[cpu]) {
-			rc = -ENOMEM;
-			goto out_free;
-		}
-		iucv_param_irq[cpu] = kmalloc_node(sizeof(union iucv_param),
-				  GFP_KERNEL|GFP_DMA, cpu_to_node(cpu));
-		if (!iucv_param_irq[cpu]) {
+	for_each_online_cpu(cpu) {
+		if (alloc_iucv_data(cpu)) {
 			rc = -ENOMEM;
 			goto out_free;
 		}
-
 	}
-	rc = register_hotcpu_notifier(&iucv_cpu_notifier);
+	rc = __register_hotcpu_notifier(&iucv_cpu_notifier);
 	if (rc)
 		goto out_free;
+
+	cpu_notifier_register_done();
+
 	rc = register_reboot_notifier(&iucv_reboot_notifier);
 	if (rc)
 		goto out_cpu;
@@ -2034,24 +2061,26 @@ static int __init iucv_init(void)
 	rc = bus_register(&iucv_bus);
 	if (rc)
 		goto out_reboot;
+	iucv_if.root = iucv_root;
+	iucv_if.bus = &iucv_bus;
 	return 0;
 
 out_reboot:
 	unregister_reboot_notifier(&iucv_reboot_notifier);
 out_cpu:
-	unregister_hotcpu_notifier(&iucv_cpu_notifier);
+	cpu_notifier_register_begin();
+	__unregister_hotcpu_notifier(&iucv_cpu_notifier);
 out_free:
-	for_each_possible_cpu(cpu) {
-		kfree(iucv_param_irq[cpu]);
-		iucv_param_irq[cpu] = NULL;
-		kfree(iucv_param[cpu]);
-		iucv_param[cpu] = NULL;
-		kfree(iucv_irq_data[cpu]);
-		iucv_irq_data[cpu] = NULL;
-	}
+	for_each_possible_cpu(cpu)
+		free_iucv_data(cpu);
+
+	cpu_notifier_register_done();
+
 	root_device_unregister(iucv_root);
 out_int:
-	unregister_external_interrupt(0x4000, iucv_external_interrupt);
+	unregister_external_irq(EXT_IRQ_IUCV, iucv_external_interrupt);
+out_ctl:
+	ctl_clear_bit(0, 1);
 out:
 	return rc;
 }
@@ -2073,18 +2102,14 @@ static void __exit iucv_exit(void)
 		kfree(p);
 	spin_unlock_irq(&iucv_queue_lock);
 	unregister_reboot_notifier(&iucv_reboot_notifier);
-	unregister_hotcpu_notifier(&iucv_cpu_notifier);
-	for_each_possible_cpu(cpu) {
-		kfree(iucv_param_irq[cpu]);
-		iucv_param_irq[cpu] = NULL;
-		kfree(iucv_param[cpu]);
-		iucv_param[cpu] = NULL;
-		kfree(iucv_irq_data[cpu]);
-		iucv_irq_data[cpu] = NULL;
-	}
+	cpu_notifier_register_begin();
+	__unregister_hotcpu_notifier(&iucv_cpu_notifier);
+	for_each_possible_cpu(cpu)
+		free_iucv_data(cpu);
+	cpu_notifier_register_done();
 	root_device_unregister(iucv_root);
 	bus_unregister(&iucv_bus);
-	unregister_external_interrupt(0x4000, iucv_external_interrupt);
+	unregister_external_irq(EXT_IRQ_IUCV, iucv_external_interrupt);
 }
 
 subsys_initcall(iucv_init);