[PATCH 4/5] powerpc/numa: Disable VPHN on dedicated processor partitions
From: Anton Blanchard <hidden>
Date: 2011-01-29 22:35:22
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 <redacted> --- Index: linux-2.6/arch/powerpc/mm/numa.c ===================================================================
--- linux-2.6.orig/arch/powerpc/mm/numa.c 2011-01-29 12:58:01.849279835 +1100
+++ linux-2.6/arch/powerpc/mm/numa.c 2011-01-29 12:58:02.489239819 +1100@@ -1520,7 +1520,8 @@ 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);