// SPDX-License-Identifier: GPL-2.0-only
/******************************************************************************
*******************************************************************************
**
**  Copyright (C) Sistina Software, Inc.  1997-2003  All rights reserved.
**  Copyright (C) 2004-2007 Red Hat, Inc.  All rights reserved.
**
**
*******************************************************************************
******************************************************************************/

#include <linux/module.h>

#include "dlm_internal.h"
#include "lockspace.h"
#include "lock.h"
#include "user.h"
#include "memory.h"
#include "config.h"
#include "midcomms.h"

#define CREATE_TRACE_POINTS
#include <trace/events/dlm.h>

struct workqueue_struct *dlm_wq;

static int __init init_dlm(void)
{
        int error;

        error = dlm_memory_init();
        if (error)
                goto out;

        dlm_midcomms_init();

        error = dlm_lockspace_init();
        if (error)
                goto out_mem;

        error = dlm_config_init();
        if (error)
                goto out_lockspace;

        dlm_register_debugfs();

        error = dlm_user_init();
        if (error)
                goto out_debug;

        error = dlm_plock_init();
        if (error)
                goto out_user;

        dlm_wq = alloc_workqueue("dlm_wq", WQ_PERCPU, 0);
        if (!dlm_wq) {
                error = -ENOMEM;
                goto out_plock;
        }

        printk("DLM installed\n");

        return 0;

 out_plock:
        dlm_plock_exit();
 out_user:
        dlm_user_exit();
 out_debug:
        dlm_unregister_debugfs();
        dlm_config_exit();
 out_lockspace:
        dlm_lockspace_exit();
 out_mem:
        dlm_midcomms_exit();
        dlm_memory_exit();
 out:
        return error;
}

static void __exit exit_dlm(void)
{
        /* be sure every pending work e.g. freeing is done */
        destroy_workqueue(dlm_wq);
        dlm_plock_exit();
        dlm_user_exit();
        dlm_config_exit();
        dlm_lockspace_exit();
        dlm_midcomms_exit();
        dlm_unregister_debugfs();
        dlm_memory_exit();
}

module_init(init_dlm);
module_exit(exit_dlm);

MODULE_DESCRIPTION("Distributed Lock Manager");
MODULE_AUTHOR("Red Hat, Inc.");
MODULE_LICENSE("GPL");

EXPORT_SYMBOL_GPL(dlm_new_lockspace);
EXPORT_SYMBOL_GPL(dlm_release_lockspace);
EXPORT_SYMBOL_GPL(dlm_lock);
EXPORT_SYMBOL_GPL(dlm_unlock);