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50 lines
1.2 KiB
50 lines
1.2 KiB
#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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