Re: [PATCH] arm: platsmp: Allow secondary cpu hotplug with maxcpus=1

Stephen Boyd
2011-06-30T16:36:20Z

On 6/30/2011 6:11 AM, Russell King - ARM Linux wrote:
> On Wed, Jun 29, 2011 at 11:31:39AM -0700, Stephen Boyd wrote:
>> void __init platform_smp_prepare_cpus(unsigned int max_cpus)
>> {
>> - int i;
>> -
>> /*
>> * Initialise the present map, which describes the set of CPUs
>> * actually populated at the present time.
>> */
>> - for (i = 0; i < max_cpus; i++)
>> - set_cpu_present(i, true);
>> + init_cpu_present(&cpu_possible_map);
> Ok, if we're now doing this in every platform, it might as well go into
> arch/arm/kernel/smp.c - platforms can re-initialize the present map
> in this callback if they need to do something different.

That sounds better. V2 coming soon.

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