Re: [PATCH v5 7/7] powerpc/powernv: nest pmu cpumask and cpu hotplug support

[Madhavan Srinivasan <maddy@linux.vnet.ibm.com>]

On Wednesday 22 July 2015 10:33 AM, Daniel Axtens wrote:
>> +static void nest_change_cpu_context(int old_cpu, int new_cpu)
>> +{
>> +	int i;
>> +
>> +	for (i = 0; per_nest_pmu_arr[i] != NULL; i++)
>> +		perf_pmu_migrate_context(&per_nest_pmu_arr[i]->pmu,
>> +						old_cpu, new_cpu);
> From patch 4, I see per_nest_pmu_arr is defined as:
>  +static struct nest_pmu *per_nest_pmu_arr[P8_NEST_MAX_PMUS];
>
> Therefore, does this loop need to have a check that 
> i < P8_NEST_MAX_PMUS?

No, that is max possible pmu, but we may have only couple for nest pmus
registered.

Thanks for the review comments
Maddy
>