[Powertop] Fwd: Suggested tunables addition: sysctl kernel.core_pattern

[George Barrett <bob at bob131.so>]

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Hi, first off thanks for the great tool!

I currently rely on a systemd unit file present in the Fedora package 
for powertop to do most of my laptop's power saving config on boot, and 
it works great. However, I've noticed a missing tunable which might be 
helpful for some folks: setting the kernel.core_pattern sysctl 
parameter to |/dev/null or similar. On my x220, this parameter set to 
it's default causes systemd-coredump to peg a single core, sometimes 
for quite an extended period of time. On many devices this would cause 
substantially greater heat output, and most importantly substantially 
higher power consumption.

I had a quick browse of the source code to see if this addition was 
trivial enough for me to submit a patch over, but from what I could see 
the existing tunables seem to work exclusively with sysfs. 
Unfortunately I don't write much C++, so I apologise for sending this 
particular email rather than submitting a patch for y'all.

Thanks