1#include <linux/kernel.h>
2#include <linux/module.h>
3#include <linux/memory.h>
4
5#include "notifier-error-inject.h"
6
7static int priority;
8module_param(priority, int, 0);
9MODULE_PARM_DESC(priority, "specify memory notifier priority");
10
11static struct notifier_err_inject memory_notifier_err_inject = {
12 .actions = {
13 { NOTIFIER_ERR_INJECT_ACTION(MEM_GOING_ONLINE) },
14 { NOTIFIER_ERR_INJECT_ACTION(MEM_GOING_OFFLINE) },
15 {}
16 }
17};
18
19static struct dentry *dir;
20
21static int err_inject_init(void)
22{
23 int err;
24
25 dir = notifier_err_inject_init("memory", notifier_err_inject_dir,
26 &memory_notifier_err_inject, priority);
27 if (IS_ERR(dir))
28 return PTR_ERR(dir);
29
30 err = register_memory_notifier(&memory_notifier_err_inject.nb);
31 if (err)
32 debugfs_remove_recursive(dir);
33
34 return err;
35}
36
37static void err_inject_exit(void)
38{
39 unregister_memory_notifier(&memory_notifier_err_inject.nb);
40 debugfs_remove_recursive(dir);
41}
42
43module_init(err_inject_init);
44module_exit(err_inject_exit);
45
46MODULE_DESCRIPTION("memory notifier error injection module");
47MODULE_LICENSE("GPL");
48MODULE_AUTHOR("Akinobu Mita <akinobu.mita@gmail.com>");
49