cpu-notifier-error-inject.c

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    1 #include <linux/kernel.h>
    2 #include <linux/module.h>
    3 #include <linux/cpu.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 cpu notifier priority");
   10 
   11 static struct notifier_err_inject cpu_notifier_err_inject = {
   12         .actions = {
   13                 { NOTIFIER_ERR_INJECT_ACTION(CPU_UP_PREPARE) },
   14                 { NOTIFIER_ERR_INJECT_ACTION(CPU_UP_PREPARE_FROZEN) },
   15                 { NOTIFIER_ERR_INJECT_ACTION(CPU_DOWN_PREPARE) },
   16                 { NOTIFIER_ERR_INJECT_ACTION(CPU_DOWN_PREPARE_FROZEN) },
   17                 {}
   18         }
   19 };
   20 
   21 static struct dentry *dir;
   22 
   23 static int err_inject_init(void)
   24 {
   25         int err;
   26 
   27         dir = notifier_err_inject_init("cpu", notifier_err_inject_dir,
   28                                         &cpu_notifier_err_inject, priority);
   29         if (IS_ERR(dir))
   30                 return PTR_ERR(dir);
   31 
   32         err = register_hotcpu_notifier(&cpu_notifier_err_inject.nb);
   33         if (err)
   34                 debugfs_remove_recursive(dir);
   35 
   36         return err;
   37 }
   38 
   39 static void err_inject_exit(void)
   40 {
   41         unregister_hotcpu_notifier(&cpu_notifier_err_inject.nb);
   42         debugfs_remove_recursive(dir);
   43 }
   44 
   45 module_init(err_inject_init);
   46 module_exit(err_inject_exit);
   47 
   48 MODULE_DESCRIPTION("CPU notifier error injection module");
   49 MODULE_LICENSE("GPL");
   50 MODULE_AUTHOR("Akinobu Mita <akinobu.mita@gmail.com>");

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

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