[SPARC64]: Clear cpu_{core,sibling}_map[] in smp_fill_in_sib_core_maps()

When we hot-plug in new cpus, the core_id and proc_id of existing
cpus can change.  So in order to set the cpu groups correctly we
need to clear the maps out completely first.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c
index 6956845b03fa..e038ae65cb62 100644
--- a/arch/sparc64/kernel/smp.c
+++ b/arch/sparc64/kernel/smp.c
@@ -1244,6 +1244,7 @@ void __devinit smp_fill_in_sib_core_maps(void)
         for_each_possible_cpu(i) {
                 unsigned int j;
 
+                cpus_clear(cpu_core_map[i]);
                 if (cpu_data(i).core_id == 0) {
                         cpu_set(i, cpu_core_map[i]);
                         continue;
@@ -1259,6 +1260,7 @@ void __devinit smp_fill_in_sib_core_maps(void)
         for_each_possible_cpu(i) {
                 unsigned int j;
 
+                cpus_clear(cpu_sibling_map[i]);
                 if (cpu_data(i).proc_id == -1) {
                         cpu_set(i, cpu_sibling_map[i]);
                         continue;