Root/lib/pm-notifier-error-inject.c

1#include <linux/kernel.h>
2#include <linux/module.h>
3#include <linux/suspend.h>
4
5#include "notifier-error-inject.h"
6
7static int priority;
8module_param(priority, int, 0);
9MODULE_PARM_DESC(priority, "specify PM notifier priority");
10
11static struct notifier_err_inject pm_notifier_err_inject = {
12    .actions = {
13        { NOTIFIER_ERR_INJECT_ACTION(PM_HIBERNATION_PREPARE) },
14        { NOTIFIER_ERR_INJECT_ACTION(PM_SUSPEND_PREPARE) },
15        { NOTIFIER_ERR_INJECT_ACTION(PM_RESTORE_PREPARE) },
16        {}
17    }
18};
19
20static struct dentry *dir;
21
22static int err_inject_init(void)
23{
24    int err;
25
26    dir = notifier_err_inject_init("pm", notifier_err_inject_dir,
27                    &pm_notifier_err_inject, priority);
28    if (IS_ERR(dir))
29        return PTR_ERR(dir);
30
31    err = register_pm_notifier(&pm_notifier_err_inject.nb);
32    if (err)
33        debugfs_remove_recursive(dir);
34
35    return err;
36}
37
38static void err_inject_exit(void)
39{
40    unregister_pm_notifier(&pm_notifier_err_inject.nb);
41    debugfs_remove_recursive(dir);
42}
43
44module_init(err_inject_init);
45module_exit(err_inject_exit);
46
47MODULE_DESCRIPTION("PM notifier error injection module");
48MODULE_LICENSE("GPL");
49MODULE_AUTHOR("Akinobu Mita <akinobu.mita@gmail.com>");
50

Archive Download this file



interactive