From 437ccdc8ce629470babdda1a7086e2f477048cbd Mon Sep 17 00:00:00 2001

From: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com>

Date: Thu, 8 Nov 2018 10:47:56 +0530

Subject: [PATCH] powerpc/numa: Suppress "VPHN is not supported" messages

References: bsc#1181674 ltc#189159

Patch-mainline: v4.20-rc3

Git-commit: 437ccdc8ce629470babdda1a7086e2f477048cbd

When VPHN function is not supported and during cpu hotplug event,

kernel prints message 'VPHN function not supported. Disabling

polling...'. Currently it prints on every hotplug event, it floods

dmesg when a KVM guest tries to hotplug huge number of vcpus, let's

just print once and suppress further kernel prints.

Signed-off-by: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com>

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

Acked-by: Michal Suchanek <msuchanek@suse.de>

---

 arch/powerpc/mm/numa.c | 2 +-

 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c

index 3a048e98a132..ce28ae5ca080 100644

--- a/arch/powerpc/mm/numa.c

+++ b/arch/powerpc/mm/numa.c

@@ -1178,7 +1178,7 @@ static long vphn_get_associativity(unsigned long cpu,

 	switch (rc) {

 	case H_FUNCTION:

-		printk(KERN_INFO

+		printk_once(KERN_INFO

 			"VPHN is not supported. Disabling polling...\n");

 		stop_topology_update();

 		break;

-- 

2.26.2