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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2011-03-09 13:00:14 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2011-03-10 10:06:41 +1100
commit36e8695ca5dcf48c837a6efe6f780c47ac9ec808 (patch)
tree8959a20737350fa91854c0f9d6dc1dda00aa5e79 /arch/powerpc
parentf2f6dad6ca3b06ae35a2e7b63f38158242c01531 (diff)
downloadlinux-2.6.38-lt-ux500-36e8695ca5dcf48c837a6efe6f780c47ac9ec808.tar.gz
powerpc/pseries: Disable VPNH feature
This feature triggers nasty races in the scheduler between the rebuilding of the topology and the load balancing code, causing the machine to hang. Disable it for now until the races are fixed. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/mm/numa.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index fd481232957..0dc95c0aa3b 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -1516,7 +1516,8 @@ int start_topology_update(void)
{
int rc = 0;
- if (firmware_has_feature(FW_FEATURE_VPHN) &&
+ /* Disabled until races with load balancing are fixed */
+ if (0 && firmware_has_feature(FW_FEATURE_VPHN) &&
get_lppaca()->shared_proc) {
vphn_enabled = 1;
setup_cpu_associativity_change_counters();