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    Subjectmodule param for CPU_NOTIFIER_ERROR_INJECT
    I am playing around with CPU_NOTIFIER_ERROR_INJECT and am noticing that

    example 2
    # modprobe cpu-notifier-error-inject cpu_up_prepare_error=-2
    # echo 1 > /sys/devices/system/cpu/cpu1/online
    bash: echo: write error: No such file or directory

    is not working for me, or atleast is not showing me any info that it is

    the other proceedure does work:

    example 1
    # modprobe cpu-notifier-error-inject cpu_down_prepare_error=-1
    # echo 0 > /sys/devices/system/cpu/cpu1/online
    bash: echo: write error: Operation not permitted

    dmesg shows:
    [ 2427.924405] Injecting error (-1) at cpu notifier
    [ 2427.930569] _cpu_down: attempt to take down CPU 1 failed

    any ideas on what I need to do or is this working, and am I not seeing
    anything in dmesg?

    Justin P. Mattock

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