Eric Lee / smarc-fsl-linux-kernel

31 Jul, 2012

1 commit

  • 048b9c354   PM: PM notifier error injection module ... Browse Code ยป

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

    Each of the files in "error" directory represents an event which can be
    failed and contains the error code. If the notifier call chain should be
    failed with some events notified, write the error code to the files.

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

    Signed-off-by: Akinobu Mita
    Acked-by: "Rafael J. Wysocki"
    Cc: Pavel Machek
    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