50 lines
1.1 KiB
C
50 lines
1.1 KiB
C
|
// SPDX-License-Identifier: GPL-2.0-only
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include <linux/memory.h>
|
||
|
|
|
||
|
|
#include "notifier-error-inject.h"
|
||
|
|
|
||
|
|
static int priority;
|
||
|
|
module_param(priority, int, 0);
|
||
|
|
MODULE_PARM_DESC(priority, "specify memory notifier priority");
|
||
|
|
|
||
|
|
static struct notifier_err_inject memory_notifier_err_inject = {
|
||
|
|
.actions = {
|
||
|
|
{ NOTIFIER_ERR_INJECT_ACTION(MEM_GOING_ONLINE) },
|
||
|
|
{ NOTIFIER_ERR_INJECT_ACTION(MEM_GOING_OFFLINE) },
|
||
|
|
{}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct dentry *dir;
|
||
|
|
|
||
|
|
static int err_inject_init(void)
|
||
|
|
{
|
||
|
|
int err;
|
||
|
|
|
||
|
|
dir = notifier_err_inject_init("memory", notifier_err_inject_dir,
|
||
|
|
&memory_notifier_err_inject, priority);
|
||
|
|
if (IS_ERR(dir))
|
||
|
|
return PTR_ERR(dir);
|
||
|
|
|
||
|
|
err = register_memory_notifier(&memory_notifier_err_inject.nb);
|
||
|
|
if (err)
|
||
|
|
debugfs_remove_recursive(dir);
|
||
|
|
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void err_inject_exit(void)
|
||
|
|
{
|
||
|
|
unregister_memory_notifier(&memory_notifier_err_inject.nb);
|
||
|
|
debugfs_remove_recursive(dir);
|
||
|
|
}
|
||
|
|
|
||
|
|
module_init(err_inject_init);
|
||
|
|
module_exit(err_inject_exit);
|
||
|
|
|
||
|
|
MODULE_DESCRIPTION("memory notifier error injection module");
|
||
|
|
MODULE_LICENSE("GPL");
|
||
|
|
MODULE_AUTHOR("Akinobu Mita <akinobu.mita@gmail.com>");
|