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{ config, lib, ... }:
{
options.hardware.enableKSM = lib.mkEnableOption "Kernel Same-Page Merging";
config = lib.mkIf config.hardware.enableKSM {
systemd.services.enable-ksm = {
description = "Enable Kernel Same-Page Merging";
wantedBy = [ "multi-user.target" ];
after = [ "systemd-udev-settle.service" ];
script = ''
if [ -e /sys/kernel/mm/ksm ]; then
echo 1 > /sys/kernel/mm/ksm/run
fi
'';
};
};
}
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