| /* Inject a hwpoison memory failure on a arbitary pfn */ |
| #include <linux/module.h> |
| #include <linux/debugfs.h> |
| #include <linux/kernel.h> |
| static struct dentry *hwpoison_dir, *corrupt_pfn; |
| static int hwpoison_inject(void *data, u64 val) |
| if (!capable(CAP_SYS_ADMIN)) |
| printk(KERN_INFO "Injecting memory failure at pfn %Lx\n", val); |
| return __memory_failure(val, 18, 0); |
| DEFINE_SIMPLE_ATTRIBUTE(hwpoison_fops, NULL, hwpoison_inject, "%lli\n"); |
| static void pfn_inject_exit(void) |
| debugfs_remove_recursive(hwpoison_dir); |
| static int pfn_inject_init(void) |
| hwpoison_dir = debugfs_create_dir("hwpoison", NULL); |
| if (hwpoison_dir == NULL) |
| corrupt_pfn = debugfs_create_file("corrupt-pfn", 0600, hwpoison_dir, |
| if (corrupt_pfn == NULL) { |
| module_init(pfn_inject_init); |
| module_exit(pfn_inject_exit); |