On Fri, Feb 21, 2020 at 02:20:10PM +0000, Mel Gorman wrote: > I fully acknowledge that this may have value for sysadmins and may be a > good enough reason to merge it for environments that typically build and > configure their own kernels. I doubt that general distributions would > enable it but that's a guess. OTOH, many sysadmins seem to 'rely' on BPF scripts and other such fancy things these days. ( of course, we have the open question on what happens when we break one of those BPF 'important' scripts ... ) My main reservation with this patch is that it exposes, to userspace, an ABI that is very hard to interpret and subject to implementation details. So while it can be disabled; people who have it enabled might suddenly complain when we change the meaning/interpretation/whatever of these magic numbers. Michael; you seem to have ignored the tracepoint / BPF angle earlier in this discussion; that is not something that could/would work for you?
