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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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