Re: [PATCH 00/12] DT: CPU h/w id parsing clean-ups and cacheinfo id support

Rob Herring
2021-10-20T18:48:09Z

On Wed, Oct 6, 2021 at 11:43 AM Rob Herring <robh@kernel.org> wrote:
>
> The first 10 patches add a new function, of_get_cpu_hwid(), which parses
> CPU DT node 'reg' property, and then use it to replace all the open
> coded versions of parsing CPU node 'reg' properties.
>
> The last 2 patches add support for populating the cacheinfo 'id' on DT
> platforms. The minimum associated CPU hwid is used for the id. The id is
> optional, but necessary for resctrl which is being adapted for Arm MPAM.
>
> Tested on arm64. Compile tested on arm, x86 and powerpc.
>
> Rob
>
> Rob Herring (12):
> of: Add of_get_cpu_hwid() to read hardware ID from CPU nodes
> ARM: Use of_get_cpu_hwid()
> ARM: broadcom: Use of_get_cpu_hwid()
> arm64: Use of_get_cpu_hwid()
> csky: Use of_get_cpu_hwid()
> openrisc: Use of_get_cpu_hwid()
> powerpc: Use of_get_cpu_hwid()
> riscv: Use of_get_cpu_hwid()
> sh: Use of_get_cpu_hwid()
> x86: dt: Use of_get_cpu_hwid()
> cacheinfo: Allow for >32-bit cache 'id'
> cacheinfo: Set cache 'id' based on DT data

I've fixed up the openrisc error and applied 1-10 to the DT tree.

The cacheinfo part is going to need some more work. I've found I will
need the cache affinity (of possible cpus) as well, so I plan to also
store the affinity instead of looping thru caches and cpus again.

Rob