Eric Lee / smarc-fsl-linux-kernel

31 Jul, 2012

1 commit

  • 9579f5bd3   memory: memory notifier error injection module ... Browse Code ยป

    This provides the ability to inject artifical errors to memory hotplug
    notifier chain callbacks. It is controlled through debugfs interface
    under /sys/kernel/debug/notifier-error-inject/memory

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

    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

    Signed-off-by: Akinobu Mita
    Cc: Pavel Machek
    Cc: "Rafael J. Wysocki"
    Cc: Greg KH
    Cc: Benjamin Herrenschmidt
    Cc: Paul Mackerras
    Cc: Michael Ellerman
    Cc: Dave Jones
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Akinobu Mita