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CONFIG_PM_NOTIFIER_ERROR_INJECT: PM notifier error injection module

General informations

The Linux kernel configuration item CONFIG_PM_NOTIFIER_ERROR_INJECT:

Help text

This option provides the ability to inject artificial errors to PM notifier chain callbacks. It is controlled through debugfs interface /sys/kernel/debug/notifier-error-inject/pm

If the notifier call chain should be failed with some events notified, write the error code to "actions/<notifier event>/error".

Example: Inject PM suspend error (-12 = -ENOMEM)

# cd /sys/kernel/debug/notifier-error-inject/pm/ # echo -12 > actions/PM_SUSPEND_PREPARE/error # echo mem > /sys/power/state bash: echo: write error: Cannot allocate memory

To compile this code as a module, choose M here: the module will be called pm-notifier-error-inject.

If unsure, say N.



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