memory-notifier-error-inject.c

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    1 #include <linux/kernel.h>
    2 #include <linux/module.h>
    3 #include <linux/memory.h>
    4 
    5 #include "notifier-error-inject.h"
    6 
    7 static int priority;
    8 module_param(priority, int, 0);
    9 MODULE_PARM_DESC(priority, "specify memory notifier priority");
   10 
   11 static 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 
   19 static struct dentry *dir;
   20 
   21 static 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 
   37 static void err_inject_exit(void)
   38 {
   39         unregister_memory_notifier(&memory_notifier_err_inject.nb);
   40         debugfs_remove_recursive(dir);
   41 }
   42 
   43 module_init(err_inject_init);
   44 module_exit(err_inject_exit);
   45 
   46 MODULE_DESCRIPTION("memory notifier error injection module");
   47 MODULE_LICENSE("GPL");
   48 MODULE_AUTHOR("Akinobu Mita <akinobu.mita@gmail.com>");

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FreeBSD/Linux Kernel Cross Reference sys/lib/memory-notifier-error-inject.c

FreeBSD/Linux Kernel Cross Reference
sys/lib/memory-notifier-error-inject.c