[DLM] The core of the DLM for GFS2/CLVM
[linux-3.10.git] / fs / dlm / main.c
1 /******************************************************************************
2 *******************************************************************************
3 **
4 **  Copyright (C) Sistina Software, Inc.  1997-2003  All rights reserved.
5 **  Copyright (C) 2004-2005 Red Hat, Inc.  All rights reserved.
6 **
7 **  This copyrighted material is made available to anyone wishing to use,
8 **  modify, copy, or redistribute it subject to the terms and conditions
9 **  of the GNU General Public License v.2.
10 **
11 *******************************************************************************
12 ******************************************************************************/
13
14 #include "dlm_internal.h"
15 #include "lockspace.h"
16 #include "lock.h"
17 #include "memory.h"
18 #include "lowcomms.h"
19 #include "config.h"
20
21 #ifdef CONFIG_DLM_DEBUG
22 int dlm_register_debugfs(void);
23 void dlm_unregister_debugfs(void);
24 #else
25 static inline int dlm_register_debugfs(void) { return 0; }
26 static inline void dlm_unregister_debugfs(void) { }
27 #endif
28
29 static int __init init_dlm(void)
30 {
31         int error;
32
33         error = dlm_memory_init();
34         if (error)
35                 goto out;
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         error = dlm_register_debugfs();
46         if (error)
47                 goto out_config;
48
49         error = dlm_lowcomms_init();
50         if (error)
51                 goto out_debug;
52
53         printk("DLM (built %s %s) installed\n", __DATE__, __TIME__);
54
55         return 0;
56
57  out_debug:
58         dlm_unregister_debugfs();
59  out_config:
60         dlm_config_exit();
61  out_lockspace:
62         dlm_lockspace_exit();
63  out_mem:
64         dlm_memory_exit();
65  out:
66         return error;
67 }
68
69 static void __exit exit_dlm(void)
70 {
71         dlm_lowcomms_exit();
72         dlm_config_exit();
73         dlm_memory_exit();
74         dlm_lockspace_exit();
75         dlm_unregister_debugfs();
76 }
77
78 module_init(init_dlm);
79 module_exit(exit_dlm);
80
81 MODULE_DESCRIPTION("Distributed Lock Manager");
82 MODULE_AUTHOR("Red Hat, Inc.");
83 MODULE_LICENSE("GPL");
84
85 EXPORT_SYMBOL_GPL(dlm_new_lockspace);
86 EXPORT_SYMBOL_GPL(dlm_release_lockspace);
87 EXPORT_SYMBOL_GPL(dlm_lock);
88 EXPORT_SYMBOL_GPL(dlm_unlock);
89