From: David S. Miller <davem@sunset.davemloft.net>
Date: Sun, 15 Jul 2007 08:29:24 +0000 (-0700)
Subject: [SPARC64]: Clear cpu_{core,sibling}_map[] in smp_fill_in_sib_core_maps()
X-Git-Tag: v2.6.23-rc1~784^2~4
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=39dd992aee381ff5077536853051fc69e58cc4a9;p=linux-2.6-omap-h63xx.git

[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>
---

diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c
index 6956845b03f..e038ae65cb6 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;