This is a note to let you know that I've just added the patch titled
powerpc/numa: Fix bug in unmap_cpu_from_node
to the 2.6.37-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
powerpc-numa-fix-bug-in-unmap_cpu_from_node.patch
and it can be found in the queue-2.6.37 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 429f4d8d20b91e4a6c239f951c06a56a6ac22957 Mon Sep 17 00:00:00 2001
From: Anton Blanchard <[email protected]>
Date: Sat, 29 Jan 2011 12:37:16 +0000
Subject: powerpc/numa: Fix bug in unmap_cpu_from_node
From: Anton Blanchard <[email protected]>
commit 429f4d8d20b91e4a6c239f951c06a56a6ac22957 upstream.
When converting to the new cpumask code I screwed up:
- if (cpu_isset(cpu, numa_cpumask_lookup_table[node])) {
- cpu_clear(cpu, numa_cpumask_lookup_table[node]);
+ if (cpumask_test_cpu(cpu, node_to_cpumask_map[node])) {
+ cpumask_set_cpu(cpu, node_to_cpumask_map[node]);
This was introduced in commit 25863de07af9 (powerpc/cpumask: Convert NUMA code
to new cpumask API)
Fix it.
Signed-off-by: Anton Blanchard <[email protected]>
Signed-off-by: Benjamin Herrenschmidt <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
arch/powerpc/mm/numa.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -181,7 +181,7 @@ static void unmap_cpu_from_node(unsigned
dbg("removing cpu %lu from node %d\n", cpu, node);
if (cpumask_test_cpu(cpu, node_to_cpumask_map[node])) {
- cpumask_set_cpu(cpu, node_to_cpumask_map[node]);
+ cpumask_clear_cpu(cpu, node_to_cpumask_map[node]);
} else {
printk(KERN_ERR "WARNING: cpu %lu not found in node %d\n",
cpu, node);
Patches currently in stable-queue which might be from [email protected] are
queue-2.6.37/powerpc-numa-fix-bug-in-unmap_cpu_from_node.patch
queue-2.6.37/powerpc-fix-hcall-tracepoint-recursion.patch
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