Re: [PATCH V3 1/6] perf/x86/intel/uncore: Add Sapphire Rapids server support

[Greg KH]

On Tue, Jun 29, 2021 at 11:13:58AM -0700, kan.liang@xxxxxxxxxxxxxxx wrote:
> From: Kan Liang <kan.liang@xxxxxxxxxxxxxxx>
> 
> Intel Sapphire Rapids supports a discovery mechanism, that allows an
> uncore driver to discover the different components ("boxes") of the
> chip.
> 
> All the generic information of the uncore boxes should be retrieved from
> the discovery tables. This has been enabled with the commit edae1f06c2cd
> ("perf/x86/intel/uncore: Parse uncore discovery tables"). Add
> use_discovery to indicate the case. The uncore driver doesn't need to
> hard code the generic information for each uncore box.
> 
> But we still need to enable various functionality that cannot be
> directly discovered. This is done here.
>  - Add a meaningful name for each uncore block.
>  - Add CHA filter support.
>  - The layout of the control registers for each uncore block is a little
>    bit different from the generic one. Set the platform specific format
>    and ops. Expose the common ops which can be reused.
>  - Add a fixed counter for IMC

Shouldn't this all be individual patches, one per new feature added?
There's a lot of stuff happening all at once here, maybe the perf
maintainers are more lax about this type of thing than other
subsystems...

greg k-h