Concern about libperfmgr spamming in logcat

[Kogfill]

Hi. My device is SM-A505FM and the rom I use is LineageOS 19.1 (from https://forum.xda-developers.com/t/rom-a12-1-a505fn-unofficial-lineageos-19-1.4490485/) which is built with the https://github.com/Galaxya50 device tree.

When Mint Kernel is installed I'm seeing this message spamming in logcat(~every 0.5 seconds):
<time> 4447 6389 W libperfmgr: Failed to write to node: /dev/stune/top-app/schedtune.boost with value: 30, fd: -1
And this doesn't appear on the kernel that comes with the rom.

I did ls /dev/stune/top-app with Mint Kernel and with the rom one. On the rom kernel file schedtune.boost was present, but on Mint Kernel there were schedtune.freqboost, schedtune.heavyboost and schedtune.busyboost instead of just schedtune.boost.

I don't know if this is to worry about. It seems to be something about cpu frequency boosting and may affect battery life/performance?

(tested with Mint Kernel versions beta-1371 and stable-12.5.1)