The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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

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    1 #include <linux/kernel.h>
    2 #include <linux/module.h>
    3 #include <linux/suspend.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 PM notifier priority");
   10 
   11 static 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 
   20 static struct dentry *dir;
   21 
   22 static 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 
   38 static void err_inject_exit(void)
   39 {
   40         unregister_pm_notifier(&pm_notifier_err_inject.nb);
   41         debugfs_remove_recursive(dir);
   42 }
   43 
   44 module_init(err_inject_init);
   45 module_exit(err_inject_exit);
   46 
   47 MODULE_DESCRIPTION("PM notifier error injection module");
   48 MODULE_LICENSE("GPL");
   49 MODULE_AUTHOR("Akinobu Mita <akinobu.mita@gmail.com>");

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