Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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", WQ_PERCPU, 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