lkml.org 
[lkml]   [2017]   [Nov]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH] powerpc/powernv: Fix IMC_MAX_PMU macro
From
Date


On Friday 10 November 2017 02:32 AM, Michael Ellerman wrote:
> Anju T Sudhakar <anju@linux.vnet.ibm.com> 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 <anju@linux.vnet.ibm.com>
>> ---
>> 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

\
 
 \ /
  Last update: 2017-11-10 02:03    [W:0.082 / U:2.048 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site