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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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