From: Anton Blanchard <anton@samba.org>
Date: Sat, 29 Jan 2011 12:35:22 +0000 (+0000)
Subject: powerpc/numa: Disable VPHN on dedicated processor partitions
X-Git-Tag: v2.6.38-rc4~3^2~2
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=fe5cfd63557b39007460d17c585b8dc5ed6ace93;p=linux.git

powerpc/numa: Disable VPHN on dedicated processor partitions

There is no need to start up the timer and monitor topology changes on a
dedicated processor partition, so disable it.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index d07cd08747e5..3cf33494a5ae 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)) {
+	if (firmware_has_feature(FW_FEATURE_VPHN) &&
+	    get_lppaca()->shared_proc) {
 		vphn_enabled = 1;
 		setup_cpu_associativity_change_counters();
 		init_timer_deferrable(&topology_timer);