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

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Message-ID: <1437541404.30906.43.camel@axtens.net>
Date:	Wed, 22 Jul 2015 15:03:24 +1000
From:	Daniel Axtens <dja@...ens.net>
To:	Madhavan Srinivasan <maddy@...ux.vnet.ibm.com>
Cc:	linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
	Peter Zijlstra <peterz@...radead.org>,
	Stephane Eranian <eranian@...gle.com>,
	Paul Mackerras <paulus@...ba.org>,
	Anton Blanchard <anton@...ba.org>,
	Preeti U Murthy <preetium@...rew.cmu.edu>,
	Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...nel.org>,
	Anshuman Khandual <khandual@...ux.vnet.ibm.com>
Subject: Re: [PATCH v5 7/7] powerpc/powernv: nest pmu cpumask and cpu
 hotplug support

> +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?


-- 
Regards,
Daniel

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