On Fri, 2021-01-29 at 16:23 +0100, Giovanni Gherdovich wrote:

On Tue, 2021-01-26 at 11:05 +0100, Peter Zijlstra wrote:

quoted

On Tue, Jan 26, 2021 at 09:31:40AM +0000, Mel Gorman wrote:

quoted

So, should this patch be merged for 5.11 as a stopgap, fix up
schedutil/cpufreq and then test both AMD and Intel chips reporting the
correct max non-turbo and max-turbo frequencies? That would give time to
give some testing in linux-next before merging to reduce the chance
something else falls out.

Yeah, we should probably do this now. Rafael, you want this or should I
take it?

Hello Rafael,

did you have a chance to check this patch?

It fixes a performance regression from 5.11-rc1, I hoped it could be included
before v5.11 is released.

Hello Rafael,

you haven't replied to this patch, which was written aiming at v5.11.

Do you see any problem with it?
Frequency-invariant schedutil needs the driver to advertise a high max_freq to
work properly; the patch addresses this for AMD EPYC.


Thanks,
Giovanni