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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/fs/dlm/main.c
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// SPDX-License-Identifier: GPL-2.0-only

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/******************************************************************************

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*******************************************************************************

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**

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**  Copyright (C) Sistina Software, Inc.  1997-2003  All rights reserved.

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**  Copyright (C) 2004-2007 Red Hat, Inc.  All rights reserved.

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**

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**

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*******************************************************************************

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******************************************************************************/

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#include <linux/module.h>

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#include "dlm_internal.h"

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#include "lockspace.h"

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#include "lock.h"

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#include "user.h"

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#include "memory.h"

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#include "config.h"

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#include "midcomms.h"

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#define CREATE_TRACE_POINTS

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#include <trace/events/dlm.h>

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struct workqueue_struct *dlm_wq;

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static int __init init_dlm(void)

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{

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	int error;

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	error = dlm_memory_init();

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	if (error)

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		goto out;

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	dlm_midcomms_init();

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	error = dlm_lockspace_init();

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	if (error)

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		goto out_mem;

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	error = dlm_config_init();

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	if (error)

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		goto out_lockspace;

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	dlm_register_debugfs();

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	error = dlm_user_init();

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	if (error)

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		goto out_debug;

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	error = dlm_plock_init();

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	if (error)

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		goto out_user;

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	dlm_wq = alloc_workqueue("dlm_wq", 0, 0);

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	if (!dlm_wq) {

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		error = -ENOMEM;

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		goto out_plock;

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	}

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	printk("DLM installed\n");

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	return 0;

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 out_plock:

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	dlm_plock_exit();

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 out_user:

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	dlm_user_exit();

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 out_debug:

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	dlm_unregister_debugfs();

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	dlm_config_exit();

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 out_lockspace:

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	dlm_lockspace_exit();

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 out_mem:

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	dlm_midcomms_exit();

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	dlm_memory_exit();

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 out:

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	return error;

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}

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static void __exit exit_dlm(void)

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{

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	/* be sure every pending work e.g. freeing is done */

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	destroy_workqueue(dlm_wq);

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	dlm_plock_exit();

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	dlm_user_exit();

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	dlm_config_exit();

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	dlm_lockspace_exit();

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	dlm_midcomms_exit();

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	dlm_unregister_debugfs();

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	dlm_memory_exit();

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}

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module_init(init_dlm);

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module_exit(exit_dlm);

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MODULE_DESCRIPTION("Distributed Lock Manager");

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MODULE_AUTHOR("Red Hat, Inc.");

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MODULE_LICENSE("GPL");

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EXPORT_SYMBOL_GPL(dlm_new_lockspace);

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EXPORT_SYMBOL_GPL(dlm_release_lockspace);

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EXPORT_SYMBOL_GPL(dlm_lock);

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EXPORT_SYMBOL_GPL(dlm_unlock);

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