[PATCH v8 05/10] powerpc/perf: IMC pmu cpumask and cpuhotplug support

[Madhavan Srinivasan]

On Friday 12 May 2017 07:48 AM, Stewart Smith wrote:
> Madhavan Srinivasan <maddy at linux.vnet.ibm.com> writes:
>>>       * in patch 9 should opal_imc_counters_init return something other
>>>         than OPAL_SUCCESS in the case on invalid arguments? Maybe
>>>         OPAL_PARAMETER? (I think you fix this in a later patch anyway?)
>> So, init call will return OPAL_PARAMETER for the unsupported
>> domains (core and nest are supported). And if the init operation
>> fails for any reason, it would return OPAL_HARDWARE. And this is
>> documented.
> (I'll comment on the skiboot one too), but I think that if the class
> exists but init is a no-op, then OPAL_IMC_COUNTERS_INIT should return
> OPAL_SUCCESS and just do nothing. This future proofs everything, and the
> API is that one *must* call _INIT before start.
Hi stewart,

Yes. mpe did mention this in his review. And i have made the same in the v11
of the opal patchset. Currently we return OPAL_SUCCESS from _INIT
incase of type "Nest". Additionally i have also added a message to be 
printed
  but i guess we can get away with that.

Maddy

>