Re: [RFC PATCH v2 1/3] arm64: add CPU prefetch and cache modulation sysfs interface

[Koba Ko]

Hi Will,

Thanks for the feedback. I understand that your concern is about exposing
implementation-defined registers to userspace, not simply choosing sysfs
versus debugfs. I'm not planning to submit v3.

For controlled performance characterization, is there an existing kernel
mechanism or a different design you would recommend? Or do you think these
experimental controls are better kept out of tree?

Thanks,
Koba