1// SPDX-License-Identifier: GPL-2.0-only
  2/******************************************************************************
  3*******************************************************************************
  4**
  5**  Copyright (C) Sistina Software, Inc.  1997-2003  All rights reserved.
  6**  Copyright (C) 2004-2007 Red Hat, Inc.  All rights reserved.
  7**
  8**
  9*******************************************************************************
 10******************************************************************************/
 11
 12#include <linux/module.h>
 13
 14#include "dlm_internal.h"
 15#include "lockspace.h"
 16#include "lock.h"
 17#include "user.h"
 18#include "memory.h"
 19#include "config.h"
 20#include "midcomms.h"
 21
 22#define CREATE_TRACE_POINTS
 23#include <trace/events/dlm.h>
 24
 25struct workqueue_struct *dlm_wq;
 26
 27static int __init init_dlm(void)
 28{
 29	int error;
 30
 31	error = dlm_memory_init();
 32	if (error)
 33		goto out;
 34
 35	dlm_midcomms_init();
 36
 37	error = dlm_lockspace_init();
 38	if (error)
 39		goto out_mem;
 40
 41	error = dlm_config_init();
 42	if (error)
 43		goto out_lockspace;
 44
 45	dlm_register_debugfs();
 46
 47	error = dlm_user_init();
 48	if (error)
 49		goto out_debug;
 50
 51	error = dlm_plock_init();
 52	if (error)
 53		goto out_user;
 54
 55	dlm_wq = alloc_workqueue("dlm_wq", 0, 0);
 56	if (!dlm_wq) {
 57		error = -ENOMEM;
 58		goto out_plock;
 59	}
 60
 61	printk("DLM installed\n");
 62
 63	return 0;
 64
 65 out_plock:
 66	dlm_plock_exit();
 67 out_user:
 68	dlm_user_exit();
 69 out_debug:
 70	dlm_unregister_debugfs();
 71	dlm_config_exit();
 72 out_lockspace:
 73	dlm_lockspace_exit();
 74 out_mem:
 75	dlm_midcomms_exit();
 76	dlm_memory_exit();
 77 out:
 78	return error;
 79}
 80
 81static void __exit exit_dlm(void)
 82{
 83	/* be sure every pending work e.g. freeing is done */
 84	destroy_workqueue(dlm_wq);
 85	dlm_plock_exit();
 86	dlm_user_exit();
 87	dlm_config_exit();
 88	dlm_lockspace_exit();
 89	dlm_midcomms_exit();
 90	dlm_unregister_debugfs();
 91	dlm_memory_exit();
 92}
 93
 94module_init(init_dlm);
 95module_exit(exit_dlm);
 96
 97MODULE_DESCRIPTION("Distributed Lock Manager");
 98MODULE_AUTHOR("Red Hat, Inc.");
 99MODULE_LICENSE("GPL");
100
101EXPORT_SYMBOL_GPL(dlm_new_lockspace);
102EXPORT_SYMBOL_GPL(dlm_release_lockspace);
103EXPORT_SYMBOL_GPL(dlm_lock);
104EXPORT_SYMBOL_GPL(dlm_unlock);
105