Re: [tip:sched/core] sched/numa: Rewrite the CONFIG_NUMA sched domain support

[Anton Blanchard <anton@samba.org>]

Hi Peter,

We have a number of ppc64 boxes that are hitting this and have
verified that the patch fixes it.

Tested-by: Anton Blanchard <anton@samba.org>

Thanks!
Anton

---
Subject: sched: Don't try allocating memory from offline nodes
From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Date: Fri May 25 09:26:43 CEST 2012

Allocators don't appreciate it when you try and allocate memory from
offline nodes.

Reported-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
---
 kernel/sched/core.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

Index: linux-2.6/kernel/sched/core.c
===================================================================
--- linux-2.6.orig/kernel/sched/core.c
+++ linux-2.6/kernel/sched/core.c
@@ -6449,7 +6449,7 @@ static void sched_init_numa(void)
 			return;
 
 		for (j = 0; j < nr_node_ids; j++) {
-			struct cpumask *mask = kzalloc_node(cpumask_size(), GFP_KERNEL, j);
+			struct cpumask *mask = kzalloc(cpumask_size(), GFP_KERNEL);
 			if (!mask)
 				return;