CONFIG_CPU_NOTIFIER_ERROR_INJECT: CPU notifier error injection module

General informations

The Linux kernel configuration item CONFIG_CPU_NOTIFIER_ERROR_INJECT:

• prompt: CPU notifier error injection module
• type: tristate
• depends on: CONFIG_HOTPLUG_CPU && CONFIG_NOTIFIER_ERROR_INJECTION
• defined in lib/Kconfig.debug
• found in Linux kernels: 2.6.35–2.6.39, 3.0–3.19, 4.0–4.9
• modules built: cpu-notifier-error-inject

Help text

This option provides a kernel module that can be used to test the error handling of the cpu notifiers by injecting artificial errors to CPU notifier chain callbacks. It is controlled through debugfs interface under /sys/kernel/debug/notifier-error-inject/cpu

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

Example: Inject CPU offline error (-1 == -EPERM)

# cd /sys/kernel/debug/notifier-error-inject/cpu # echo -1 > actions/CPU_DOWN_PREPARE/error # echo 0 > /sys/devices/system/cpu/cpu1/online bash: echo: write error: Operation not permitted

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

If unsure, say N.

Hardware

LKDDb

Raw data from LKDDb:

• lkddb module cpu-notifier-error-inject CONFIG_CPU_NOTIFIER_ERROR_INJECT : lib/Kconfig.debug : "CPU notifier error injection module" # in 2.6.35–2.6.39, 3.0–3.19, 4.0–4.9

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

Automatic links from Google (and ads)

Custom Search

Popular queries: