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diff --git a/Documentation/fault-injection/notifier-error-inject.txt b/Documentation/fault-injection/notifier-error-inject.txt
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-Notifier error injection
-========================
-
-Notifier error injection provides the ability to inject artificial errors to
-specified notifier chain callbacks. It is useful to test the error handling of
-notifier call chain failures which is rarely executed.  There are kernel
-modules that can be used to test the following notifiers.
-
- * CPU notifier
- * PM notifier
- * Memory hotplug notifier
- * powerpc pSeries reconfig notifier
-
-CPU notifier error injection module
------------------------------------
-This feature can be used to test the error handling of the CPU notifiers by
-injecting artificial errors to CPU notifier chain callbacks.
-
-If the notifier call chain should be failed with some events notified, write
-the error code to debugfs interface
-/sys/kernel/debug/notifier-error-inject/cpu/actions/<notifier event>/error
-
-Possible CPU notifier events to be failed are:
-
- * CPU_UP_PREPARE
- * CPU_UP_PREPARE_FROZEN
- * CPU_DOWN_PREPARE
- * CPU_DOWN_PREPARE_FROZEN
-
-Example1: 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
-
-Example2: inject CPU online error (-2 == -ENOENT)
-
-        # echo -2 > actions/CPU_UP_PREPARE/error
-        # echo 1 > /sys/devices/system/cpu/cpu1/online
-        bash: echo: write error: No such file or directory
-
-PM notifier error injection module
-----------------------------------
-This feature is controlled through debugfs interface
-/sys/kernel/debug/notifier-error-inject/pm/actions/<notifier event>/error
-
-Possible PM notifier events to be failed are:
-
- * PM_HIBERNATION_PREPARE
- * PM_SUSPEND_PREPARE
- * PM_RESTORE_PREPARE
-
-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
-
-Memory hotplug notifier error injection module
-----------------------------------------------
-This feature is controlled through debugfs interface
-/sys/kernel/debug/notifier-error-inject/memory/actions/<notifier event>/error
-
-Possible memory notifier events to be failed are:
-
- * MEM_GOING_ONLINE
- * MEM_GOING_OFFLINE
-
-Example: Inject memory hotplug offline error (-12 == -ENOMEM)
-
-        # cd /sys/kernel/debug/notifier-error-inject/memory
-        # echo -12 > actions/MEM_GOING_OFFLINE/error
-        # echo offline > /sys/devices/system/memory/memoryXXX/state
-        bash: echo: write error: Cannot allocate memory
-
-powerpc pSeries reconfig notifier error injection module
---------------------------------------------------------
-This feature is controlled through debugfs interface
-/sys/kernel/debug/notifier-error-inject/pSeries-reconfig/actions/<notifier event>/error
-
-Possible pSeries reconfig notifier events to be failed are:
-
- * PSERIES_RECONFIG_ADD
- * PSERIES_RECONFIG_REMOVE
- * PSERIES_DRCONF_MEM_ADD
- * PSERIES_DRCONF_MEM_REMOVE
-
-For more usage examples
------------------------
-There are tools/testing/selftests using the notifier error injection features
-for CPU and memory notifiers.
-
- * tools/testing/selftests/cpu-hotplug/on-off-test.sh
- * tools/testing/selftests/memory-hotplug/on-off-test.sh
-
-These scripts first do simple online and offline tests and then do fault
-injection tests if notifier error injection module is available.