blob: be4b075c30984c1b408246a306664c0a6bb626f0 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
|
/*
* edac_module.c
*
* (C) 2007 www.softwarebitmaker.com
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*
* Author: Doug Thompson <dougthompson@xmission.com>
*
*/
#include <linux/edac.h>
#include "edac_core.h"
#include "edac_module.h"
#define EDAC_VERSION "Ver: 2.1.0 " __DATE__
#ifdef CONFIG_EDAC_DEBUG
/* Values of 0 to 4 will generate output */
int edac_debug_level = 2;
EXPORT_SYMBOL_GPL(edac_debug_level);
#endif
/* scope is to module level only */
struct workqueue_struct *edac_workqueue;
/*
* edac_op_state_to_string()
*/
char *edac_op_state_to_string(int opstate)
{
if (opstate == OP_RUNNING_POLL)
return "POLLED";
else if (opstate == OP_RUNNING_INTERRUPT)
return "INTERRUPT";
else if (opstate == OP_RUNNING_POLL_INTR)
return "POLL-INTR";
else if (opstate == OP_ALLOC)
return "ALLOC";
else if (opstate == OP_OFFLINE)
return "OFFLINE";
return "UNKNOWN";
}
/*
* edac_workqueue_setup
* initialize the edac work queue for polling operations
*/
static int edac_workqueue_setup(void)
{
edac_workqueue = create_singlethread_workqueue("edac-poller");
if (edac_workqueue == NULL)
return -ENODEV;
else
return 0;
}
/*
* edac_workqueue_teardown
* teardown the edac workqueue
*/
static void edac_workqueue_teardown(void)
{
if (edac_workqueue) {
flush_workqueue(edac_workqueue);
destroy_workqueue(edac_workqueue);
edac_workqueue = NULL;
}
}
/*
* edac_init
* module initialization entry point
*/
static int __init edac_init(void)
{
int err = 0;
edac_printk(KERN_INFO, EDAC_MC, EDAC_VERSION "\n");
/*
* Harvest and clear any boot/initialization PCI parity errors
*
* FIXME: This only clears errors logged by devices present at time of
* module initialization. We should also do an initial clear
* of each newly hotplugged device.
*/
edac_pci_clear_parity_errors();
/*
* now set up the mc_kset under the edac class object
*/
err = edac_sysfs_setup_mc_kset();
if (err)
goto error;
/* Setup/Initialize the workq for this core */
err = edac_workqueue_setup();
if (err) {
edac_printk(KERN_ERR, EDAC_MC, "init WorkQueue failure\n");
goto workq_fail;
}
return 0;
/* Error teardown stack */
workq_fail:
edac_sysfs_teardown_mc_kset();
error:
return err;
}
/*
* edac_exit()
* module exit/termination function
*/
static void __exit edac_exit(void)
{
debugf0("%s()\n", __func__);
/* tear down the various subsystems */
edac_workqueue_teardown();
edac_sysfs_teardown_mc_kset();
}
/*
* Inform the kernel of our entry and exit points
*/
module_init(edac_init);
module_exit(edac_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Doug Thompson www.softwarebitmaker.com, et al");
MODULE_DESCRIPTION("Core library routines for EDAC reporting");
/* refer to *_sysfs.c files for parameters that are exported via sysfs */
#ifdef CONFIG_EDAC_DEBUG
module_param(edac_debug_level, int, 0644);
MODULE_PARM_DESC(edac_debug_level, "Debug level");
#endif
|
