int parport_device_proc_register(struct pardevice *device)
{
	struct parport_device_sysctl_table *t;
	struct parport * port = device->port;
	
	t = kmalloc(sizeof(*t), GFP_KERNEL);
	if (t == NULL)
		return -ENOMEM;
	memcpy(t, &parport_device_sysctl_template, sizeof(*t));

	t->dev_dir[0].child = t->parport_dir;
	t->parport_dir[0].child = t->port_dir;
	t->port_dir[0].procname = port->name;
	t->port_dir[0].ctl_name = port->number + 1; /* nb 0 isn't legal here */
	t->port_dir[0].child = t->devices_root_dir;
	t->devices_root_dir[0].child = t->device_dir;

#ifdef CONFIG_PARPORT_1284

	t->device_dir[0].ctl_name =
		parport_device_num(port->number, port->muxport,
				   device->daisy)
		+ 1;  /* nb 0 isn't legal here */ 

#else /* No IEEE 1284 support */

	/* parport_device_num isn't available. */
	t->device_dir[0].ctl_name = 1;
	
#endif /* IEEE 1284 support or not */

	t->device_dir[0].procname = device->name;
	t->device_dir[0].extra1 = device;
	t->device_dir[0].child = t->vars;
	t->vars[0].data = &device->timeslice;

	t->sysctl_header = register_sysctl_table(t->dev_dir, 0);
	if (t->sysctl_header == NULL) {
		kfree(t);
		t = NULL;
	}
	device->sysctl_table = t;
	return 0;
}

void coda_sysctl_init()
{
	reset_coda_vfs_stats();
	reset_coda_cache_inv_stats();

#ifdef CONFIG_PROC_FS
	proc_fs_coda = proc_mkdir("coda", proc_root_fs);
	if (proc_fs_coda) {
		proc_fs_coda->owner = THIS_MODULE;
		coda_proc_create("vfs_stats", coda_vfs_stats_get_info);
		coda_proc_create("cache_inv_stats", coda_cache_inv_stats_get_info);
	}
#endif

#ifdef CONFIG_SYSCTL
	if ( !fs_table_header )
		fs_table_header = register_sysctl_table(fs_table, 0);
#endif 
}

static int
cmm_init (void)
{
	int rc = -ENOMEM;

#ifdef CONFIG_CMM_PROC
	cmm_sysctl_header = register_sysctl_table(cmm_dir_table);
	if (!cmm_sysctl_header)
		goto out;
#endif
#ifdef CONFIG_CMM_IUCV
	rc = smsg_register_callback(SMSG_PREFIX, cmm_smsg_target);
	if (rc < 0)
		goto out_smsg;
#endif
	rc = register_oom_notifier(&cmm_oom_nb);
	if (rc < 0)
		goto out_oom_notify;
	init_waitqueue_head(&cmm_thread_wait);
	init_timer(&cmm_timer);
	cmm_thread_ptr = kthread_run(cmm_thread, NULL, "cmmthread");
	rc = IS_ERR(cmm_thread_ptr) ? PTR_ERR(cmm_thread_ptr) : 0;
	if (!rc)
		goto out;
	/*
	 * kthread_create failed. undo all the stuff from above again.
	 */
	unregister_oom_notifier(&cmm_oom_nb);

out_oom_notify:
#ifdef CONFIG_CMM_IUCV
	smsg_unregister_callback(SMSG_PREFIX, cmm_smsg_target);
out_smsg:
#endif
#ifdef CONFIG_CMM_PROC
	unregister_sysctl_table(cmm_sysctl_header);
#endif
out:
	return rc;
}

static int __init init_nlm(void)
{
	int err;

#ifdef CONFIG_SYSCTL
	err = -ENOMEM;
	nlm_sysctl_table = register_sysctl_table(nlm_sysctl_root);
	if (nlm_sysctl_table == NULL)
		goto err_sysctl;
#endif
	err = register_pernet_subsys(&lockd_net_ops);
	if (err)
		goto err_pernet;
	return 0;

err_pernet:
#ifdef CONFIG_SYSCTL
	unregister_sysctl_table(nlm_sysctl_table);
#endif
err_sysctl:
	return err;
}

static int
cmm_init (void)
{
	int rc;

	/* Prevent logical cpu 0 from being set offline. */
	rc = smp_get_cpu(cpumask_of_cpu(0));
	if (rc) {
		printk(KERN_ERR "CMM: unable to reserve cpu 0\n");
		return rc;
	}
#ifdef CONFIG_CMM_PROC
	cmm_sysctl_header = register_sysctl_table(cmm_dir_table, 1);
#endif
#ifdef CONFIG_CMM_IUCV
	smsg_register_callback(SMSG_PREFIX, cmm_smsg_target);
#endif
	INIT_WORK(&cmm_thread_starter, (void *) cmm_start_thread, 0);
	init_waitqueue_head(&cmm_thread_wait);
	init_timer(&cmm_timer);
	return 0;
}

int __init h3600_stowaway_init_module( void )
{
        /* register our character device */
        SFDEBUG(0,"registering char device\n");

        g_stowaway_major = devfs_register_chrdev(0, H3600_STOWAWAY_MODULE_NAME, &stowaway_fops);
        if (g_stowaway_major < 0) {
                printk(KERN_ALERT __FUNCTION__ ": can't get major number\n");
                return g_stowaway_major;
        }

        devfs_stowaway = devfs_register( NULL, H3600_STOWAWAY_DEVICE_NAME, 
					 DEVFS_FL_DEFAULT, g_stowaway_major, 
					 0, S_IFCHR | S_IRUSR | S_IWUSR, &stowaway_fops, NULL );

	/* Register in /proc filesystem */
	create_proc_read_entry(H3600_STOWAWAY_PROC_STATS, 0, proc_dir, 
			       h3600_stowaway_proc_stats_read, NULL );

	h3600_stowaway_sysctl_header = register_sysctl_table(h3600_stowaway_dir_table, 0);

	return 0;
}

int parport_proc_register(struct parport *port)
{
	struct parport_sysctl_table *t;
	int i;

	t = kmalloc(sizeof(*t), GFP_KERNEL);
	if (t == NULL)
		return -ENOMEM;
	memcpy(t, &parport_sysctl_template, sizeof(*t));

	t->device_dir[0].extra1 = port;

	for (i = 0; i < 8; i++)
		t->vars[i].extra1 = port;

	t->vars[0].data = &port->spintime;
	t->vars[5].child = t->device_dir;
	
	for (i = 0; i < 5; i++)
		t->vars[6 + i].extra2 = &port->probe_info[i];

	t->port_dir[0].procname = port->name;
	t->port_dir[0].ctl_name = port->number + 1; /* nb 0 isn't legal here */

	t->port_dir[0].child = t->vars;
	t->parport_dir[0].child = t->port_dir;
	t->dev_dir[0].child = t->parport_dir;

	t->sysctl_header = register_sysctl_table(t->dev_dir, 0);
	if (t->sysctl_header == NULL) {
		kfree(t);
		t = NULL;
	}
	port->sysctl_table = t;
	return 0;
}

int xprt_rdma_init(void)
{
	int rc;

	rc = rpcrdma_alloc_wq();
	if (rc)
		return rc;

	rc = xprt_register_transport(&xprt_rdma);
	if (rc) {
		rpcrdma_destroy_wq();
		return rc;
	}

	rc = xprt_register_transport(&xprt_rdma_bc);
	if (rc) {
		xprt_unregister_transport(&xprt_rdma);
		rpcrdma_destroy_wq();
		return rc;
	}

	dprintk("RPCRDMA Module Init, register RPC RDMA transport\n");

	dprintk("Defaults:\n");
	dprintk("\tSlots %d\n"
		"\tMaxInlineRead %d\n\tMaxInlineWrite %d\n",
		xprt_rdma_slot_table_entries,
		xprt_rdma_max_inline_read, xprt_rdma_max_inline_write);
	dprintk("\tPadding 0\n\tMemreg %d\n", xprt_rdma_memreg_strategy);

#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
	if (!sunrpc_table_header)
		sunrpc_table_header = register_sysctl_table(sunrpc_table);
#endif
	return 0;
}

int ethinit_module(void)
{
	int res;
        printk(KERN_INFO "init module called \n");
        init_module2_2();

        spin_lock_init(&eth_lock);

	  schar_name = "schar2";
		
	
	/* register device with kernel */
	res = register_chrdev(SCHAR_MAJOR_2, schar_name, &schar_fops);
       
	if (res) {
	      printk(KERN_INFO "can't register device with kernel\n");
		return res;
	}
	
	/* register proc entry */
	schar_root_header_2 = register_sysctl_table(schar_root_dir_2, 0);

	return 0;
}

/* allocate the tables for the presto devices. We need
 * sizeof(proto_channel_table)/sizeof(proto_channel_table[0])
 * entries for each dev
 */
int /* __init */ init_intermezzo_sysctl(void)
{
	int i;
	int total_dev = MAX_CHANNEL;
	int entries_per_dev = sizeof(proto_psdev_table) /
		sizeof(proto_psdev_table[0]);
	int total_entries = entries_per_dev * total_dev;
	ctl_table *dev_ctl_table;

	PRESTO_ALLOC(dev_ctl_table, sizeof(ctl_table) * total_entries);

	if (! dev_ctl_table) {
		CERROR("WARNING: presto couldn't allocate dev_ctl_table\n");
		EXIT;
		return -ENOMEM;
	}

	/* now fill in the entries ... we put the individual presto<x>
	 * entries at the end of the table, and the per-presto stuff
	 * starting at the front.  We assume that the compiler makes
	 * this code more efficient, but really, who cares ... it
	 * happens once per reboot.
	 */
	for(i = 0; i < total_dev; i++) {
		void *p;

		/* entry for this /proc/sys/intermezzo/intermezzo"i" */
		ctl_table *psdev = &presto_table[i + PRESTO_PRIMARY_CTLCNT];
		/* entries for the individual "files" in this "directory" */
		ctl_table *psdev_entries = &dev_ctl_table[i * entries_per_dev];
		/* init the psdev and psdev_entries with the prototypes */
		*psdev = proto_channel_entry;
		memcpy(psdev_entries, proto_psdev_table,
		       sizeof(proto_psdev_table));
		/* now specialize them ... */
		/* the psdev has to point to psdev_entries, and fix the number */
		psdev->ctl_name = psdev->ctl_name + i + 1; /* sorry */

		PRESTO_ALLOC(p, PROCNAME_SIZE);
		psdev->procname = p;
		if (!psdev->procname) {
			PRESTO_FREE(dev_ctl_table,
				    sizeof(ctl_table) * total_entries);
			return -ENOMEM;
		}
		sprintf((char *) psdev->procname, "intermezzo%d", i);
		/* hook presto into */
		psdev->child = psdev_entries;

		/* now for each psdev entry ... */
		psdev_entries[0].data = &(izo_channels[i].uc_hard);
		psdev_entries[1].data = &(izo_channels[i].uc_no_filter);
		psdev_entries[2].data = &(izo_channels[i].uc_no_journal);
		psdev_entries[3].data = &(izo_channels[i].uc_no_upcall);
		psdev_entries[4].data = &(izo_channels[i].uc_timeout);
#ifdef PRESTO_DEBUG
		psdev_entries[5].data = &(izo_channels[i].uc_errorval);
#endif
	}


#ifdef CONFIG_SYSCTL
	if ( !intermezzo_table_header )
		intermezzo_table_header =
			register_sysctl_table(intermezzo_table, 0);
#endif
#ifdef CONFIG_PROC_FS
	proc_fs_intermezzo = proc_mkdir("intermezzo", proc_root_fs);
	proc_fs_intermezzo->owner = THIS_MODULE;
	create_proc_info_entry("mounts", 0, proc_fs_intermezzo, 
			       intermezzo_mount_get_info);
#endif
	return 0;
}

static int __init ipc_sysctl_init(void)
{
	register_sysctl_table(ipc_root_table);
	return 0;
}

void ipx_register_sysctl(void)
{
	ipx_table_header = register_sysctl_table(ipx_root_table);
}

static int __init
abi_register_sysctl(void)
{
   register_sysctl_table(abi_root_table, 1);
   return 0;
}

void coda_sysctl_init(void)
{
	if ( !fs_table_header )
		fs_table_header = register_sysctl_table(fs_table);
}

static int __init init_sysctl(void)
{
    sysctl_header = register_sysctl_table(dev_root);
    return 0;
}

/*
 * initialise the fs caching module
 */
static int __init fscache_init(void)
{
	unsigned int nr_cpus = num_possible_cpus();
	unsigned int cpu;
	int ret;

	fscache_object_max_active =
		clamp_val(nr_cpus,
			  fscache_object_max_active, WQ_UNBOUND_MAX_ACTIVE);

	ret = -ENOMEM;
	fscache_object_wq = alloc_workqueue("fscache_object", WQ_UNBOUND,
					    fscache_object_max_active);
	if (!fscache_object_wq)
		goto error_object_wq;

	fscache_op_max_active =
		clamp_val(fscache_object_max_active / 2,
			  fscache_op_max_active, WQ_UNBOUND_MAX_ACTIVE);

	ret = -ENOMEM;
	fscache_op_wq = alloc_workqueue("fscache_operation", WQ_UNBOUND,
					fscache_op_max_active);
	if (!fscache_op_wq)
		goto error_op_wq;

	for_each_possible_cpu(cpu)
		init_waitqueue_head(&per_cpu(fscache_object_cong_wait, cpu));

	ret = fscache_proc_init();
	if (ret < 0)
		goto error_proc;

#ifdef CONFIG_SYSCTL
	ret = -ENOMEM;
	fscache_sysctl_header = register_sysctl_table(fscache_sysctls_root);
	if (!fscache_sysctl_header)
		goto error_sysctl;
#endif

	fscache_cookie_jar = kmem_cache_create("fscache_cookie_jar",
					       sizeof(struct fscache_cookie),
					       0,
					       0,
					       fscache_cookie_init_once);
	if (!fscache_cookie_jar) {
		printk(KERN_NOTICE
		       "FS-Cache: Failed to allocate a cookie jar\n");
		ret = -ENOMEM;
		goto error_cookie_jar;
	}

	fscache_root = kobject_create_and_add("fscache", kernel_kobj);
	if (!fscache_root)
		goto error_kobj;

	printk(KERN_NOTICE "FS-Cache: Loaded\n");
	return 0;

error_kobj:
	kmem_cache_destroy(fscache_cookie_jar);
error_cookie_jar:
#ifdef CONFIG_SYSCTL
	unregister_sysctl_table(fscache_sysctl_header);
error_sysctl:
#endif
	fscache_proc_cleanup();
error_proc:
	destroy_workqueue(fscache_op_wq);
error_op_wq:
	destroy_workqueue(fscache_object_wq);
error_object_wq:
	return ret;
}

/*
 * Initialize power interface
 */
static int __init pm_init(void)
{
	register_sysctl_table(pm_dir_table);
	return 0;
}

void
rpc_register_sysctl(void)
{
	if (!sunrpc_table_header)
		sunrpc_table_header = register_sysctl_table(sunrpc_table);
}

int __init
xpc_init(void)
{
	int ret;
	struct task_struct *kthread;

	dev_set_name(xpc_part, "part");
	dev_set_name(xpc_chan, "chan");

	if (is_shub()) {
		/*
                                                              
                                                             
                                                          
                           
   */
		if (xp_max_npartitions != 64) {
			dev_err(xpc_part, "max #of partitions not set to 64\n");
			ret = -EINVAL;
		} else {
			ret = xpc_init_sn2();
		}

	} else if (is_uv()) {
		ret = xpc_init_uv();

	} else {
		ret = -ENODEV;
	}

	if (ret != 0)
		return ret;

	ret = xpc_setup_partitions();
	if (ret != 0) {
		dev_err(xpc_part, "can't get memory for partition structure\n");
		goto out_1;
	}

	xpc_sysctl = register_sysctl_table(xpc_sys_dir);

	/*
                                                                   
                                                                   
                   
  */
	ret = xpc_setup_rsvd_page();
	if (ret != 0) {
		dev_err(xpc_part, "can't setup our reserved page\n");
		goto out_2;
	}

	/*                                           */
	ret = register_reboot_notifier(&xpc_reboot_notifier);
	if (ret != 0)
		dev_warn(xpc_part, "can't register reboot notifier\n");

	/*                                        */
	ret = register_die_notifier(&xpc_die_notifier);
	if (ret != 0)
		dev_warn(xpc_part, "can't register die notifier\n");

	/*
                                                            
                                              
  */
	kthread = kthread_run(xpc_hb_checker, NULL, XPC_HB_CHECK_THREAD_NAME);
	if (IS_ERR(kthread)) {
		dev_err(xpc_part, "failed while forking hb check thread\n");
		ret = -EBUSY;
		goto out_3;
	}

	/*
                                                                      
                                                                    
                                                   
  */
	kthread = kthread_run(xpc_initiate_discovery, NULL,
			      XPC_DISCOVERY_THREAD_NAME);
	if (IS_ERR(kthread)) {
		dev_err(xpc_part, "failed while forking discovery thread\n");

		/*                                       */
		complete(&xpc_discovery_exited);

		xpc_do_exit(xpUnloading);
		return -EBUSY;
	}

	/*                                               */
	xpc_set_interface(xpc_initiate_connect, xpc_initiate_disconnect,
			  xpc_initiate_send, xpc_initiate_send_notify,
			  xpc_initiate_received, xpc_initiate_partid_to_nasids);

	return 0;

	/*                                   */
out_3:
	xpc_teardown_rsvd_page();
//.........这里部分代码省略.........

struct ctl_table_header *mq_register_sysctl_table(void)
{
    return register_sysctl_table(mq_sysctl_root);
}