On Friday 10 November 2017 02:32 AM, Michael Ellerman wrote:
> Anju T Sudhakar <[email protected]> writes:
>
>> IMC_MAX_PMU is used for static storage (per_nest_pmu_arr) which holds
>> nest pmu information. Current value for the macro is 32 based on
>> the initial number of nest pmu units supported by the nest microcode.
>> Currently 29 nest units are enabled based on the system configuration.
>> But going forward, microcode could support more nest units (max of 64
>> nest units). Hence fix the value for the macro.
> There should be no reason to have a hard coded limit.
>
> We should just fix the code to dynamically size the array based on
> what's found in the device tree.
Yes. My bad. Device tree handling part is done in the
platform/powernv side and this data (total number of nest pmus)
can be extended from there. Will work on it.
Thanks for review comments.
Maddy
>
> cheers
>
>> Fixes:8f95faaac56c1 ('powerpc/powernv: Detect and create IMC device')
>> Signed-off-by: Anju T Sudhakar <[email protected]>
>> ---
>> arch/powerpc/include/asm/imc-pmu.h | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/arch/powerpc/include/asm/imc-pmu.h b/arch/powerpc/include/asm/imc-pmu.h
>> index 7f74c28..f9f0f2e 100644
>> --- a/arch/powerpc/include/asm/imc-pmu.h
>> +++ b/arch/powerpc/include/asm/imc-pmu.h
>> @@ -23,7 +23,7 @@
>> /*
>> * For static allocation of some of the structures.
>> */
>> -#define IMC_MAX_PMUS 32
>> +#define IMC_MAX_PMUS 64
>>
>> /*
>> * Compatibility macros for IMC devices
>> --
>> 2.7.4
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