51 lines
1.2 KiB
C
51 lines
1.2 KiB
C
#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/cpu.h>
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#include "notifier-error-inject.h"
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static int priority;
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module_param(priority, int, 0);
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MODULE_PARM_DESC(priority, "specify cpu notifier priority");
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static struct notifier_err_inject cpu_notifier_err_inject = {
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.actions = {
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{ NOTIFIER_ERR_INJECT_ACTION(CPU_UP_PREPARE) },
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{ NOTIFIER_ERR_INJECT_ACTION(CPU_UP_PREPARE_FROZEN) },
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{ NOTIFIER_ERR_INJECT_ACTION(CPU_DOWN_PREPARE) },
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{ NOTIFIER_ERR_INJECT_ACTION(CPU_DOWN_PREPARE_FROZEN) },
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{}
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}
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};
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static struct dentry *dir;
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static int err_inject_init(void)
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{
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int err;
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dir = notifier_err_inject_init("cpu", notifier_err_inject_dir,
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&cpu_notifier_err_inject, priority);
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if (IS_ERR(dir))
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return PTR_ERR(dir);
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err = register_hotcpu_notifier(&cpu_notifier_err_inject.nb);
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if (err)
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debugfs_remove_recursive(dir);
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return err;
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}
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static void err_inject_exit(void)
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{
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unregister_hotcpu_notifier(&cpu_notifier_err_inject.nb);
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debugfs_remove_recursive(dir);
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}
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module_init(err_inject_init);
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module_exit(err_inject_exit);
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MODULE_DESCRIPTION("CPU notifier error injection module");
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Akinobu Mita <akinobu.mita@gmail.com>");
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