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SubjectRe: [PATCH 07/14] [POWERPC] Populate cpu_enabled_map
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On Mon, 2008-07-14 at 20:34 -0600, Alex Chiang wrote:
> Populate the cpu_enabled_map correctly.
>
> Note that this patch does not actually make any decisions based
> on the contents of the map.
>
> However, as the map is presented via sysfs in:
>
> /sys/devices/system/cpu/
>
> It should be populated correctly.

Care to educate me on the difference between online_map and
enabled_map ?

Cheers,
Ben.

> Signed-off-by: Alex Chiang <achiang@hp.com>
> Cc: Paul Mackerras <paulus@samba.org>
> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> ---
>
> arch/powerpc/kernel/setup-common.c | 1 +
> arch/powerpc/platforms/powermac/smp.c | 1 +
> arch/powerpc/platforms/pseries/hotplug-cpu.c | 2 ++
> 3 files changed, 4 insertions(+), 0 deletions(-)
>
> diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c
> index db540ea..a4c894a 100644
> --- a/arch/powerpc/kernel/setup-common.c
> +++ b/arch/powerpc/kernel/setup-common.c
> @@ -413,6 +413,7 @@ void __init smp_setup_cpu_maps(void)
> DBG(" thread %d -> cpu %d (hard id %d)\n",
> j, cpu, intserv[j]);
> cpu_set(cpu, cpu_present_map);
> + cpu_set(cpu, cpu_enabled_map);
> set_hard_smp_processor_id(cpu, intserv[j]);
> cpu_set(cpu, cpu_possible_map);
> cpu++;
> diff --git a/arch/powerpc/platforms/powermac/smp.c b/arch/powerpc/platforms/powermac/smp.c
> index cb2d894..a74dada 100644
> --- a/arch/powerpc/platforms/powermac/smp.c
> +++ b/arch/powerpc/platforms/powermac/smp.c
> @@ -317,6 +317,7 @@ static int __init smp_psurge_probe(void)
> ncpus = NR_CPUS;
> for (i = 1; i < ncpus ; ++i) {
> cpu_set(i, cpu_present_map);
> + cpu_set(i, cpu_enabled_map);
> set_hard_smp_processor_id(i, i);
> }
>
> diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c
> index 1f03248..e738b07 100644
> --- a/arch/powerpc/platforms/pseries/hotplug-cpu.c
> +++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c
> @@ -186,6 +186,7 @@ static int pseries_add_processor(struct device_node *np)
> for_each_cpu_mask(cpu, tmp) {
> BUG_ON(cpu_isset(cpu, cpu_present_map));
> cpu_set(cpu, cpu_present_map);
> + cpu_set(cpu, cpu_enabled_map);
> set_hard_smp_processor_id(cpu, *intserv++);
> }
> err = 0;
> @@ -218,6 +219,7 @@ static void pseries_remove_processor(struct device_node *np)
> continue;
> BUG_ON(cpu_online(cpu));
> cpu_clear(cpu, cpu_present_map);
> + cpu_clear(cpu, cpu_enabled_map);
> set_hard_smp_processor_id(cpu, -1);
> break;
> }



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