[RFC v2 4/4] powerpc/papr_scm: Add cpu hotplug support for nvdimm pmu device
kjain at linux.ibm.com
Wed May 26 17:26:58 AEST 2021
On 5/25/21 7:46 PM, Peter Zijlstra wrote:
> On Tue, May 25, 2021 at 06:52:16PM +0530, Kajol Jain wrote:
>> Patch here adds cpu hotplug functions to nvdimm pmu.
> I'm thinking "Patch here" qualifies for "This patch", see
> Documentation/process/submitting-patches.rst .
I will reword this commit message.
>> It adds cpumask to designate a cpu to make HCALL to
>> collect the counter data for the nvdimm device and
>> update ABI documentation accordingly.
>> Result in power9 lpar system:
>> command:# cat /sys/devices/nmem0/cpumask
> Is this specific to the papr thing, or should this be in generic nvdimm
This code is not specific to papr device and we can move it to
generic nvdimm interface. But do we need to add some checks on whether
any arch/platform specific driver want that support or we can assume
that this will be something needed by all platforms?
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