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

Russell King - ARM Linux
2011-06-30T13:11:54Z

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.