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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950// 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>");