This is a note to let you know that I've just added the patch titled
sparc64: Fix numa node distance initialization
to the 4.4-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:
sparc64-fix-numa-node-distance-initialization.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Mon Jun 20 10:48:29 PDT 2016
From: Nitin Gupta <nitin.m.gupta@xxxxxxxxxx>
Date: Tue, 5 Jan 2016 22:35:35 -0800
Subject: sparc64: Fix numa node distance initialization
From: Nitin Gupta <nitin.m.gupta@xxxxxxxxxx>
[ Upstream commit 36beca6571c941b28b0798667608239731f9bc3a ]
Orabug: 22495713
Currently, NUMA node distance matrix is initialized only
when a machine descriptor (MD) exists. However, sun4u
machines (e.g. Sun Blade 2500) do not have an MD and thus
distance values were left uninitialized. The initialization
is now moved such that it happens on both sun4u and sun4v.
Signed-off-by: Nitin Gupta <nitin.m.gupta@xxxxxxxxxx>
Tested-by: Mikael Pettersson <mikpelinux@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/sparc/mm/init_64.c | 15 ++++++++-------
1 file changed, 8 insertions(+), 7 deletions(-)
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -1267,13 +1267,6 @@ static int __init numa_parse_mdesc(void)
int i, j, err, count;
u64 node;
- /* Some sane defaults for numa latency values */
- for (i = 0; i < MAX_NUMNODES; i++) {
- for (j = 0; j < MAX_NUMNODES; j++)
- numa_latency[i][j] = (i == j) ?
- LOCAL_DISTANCE : REMOTE_DISTANCE;
- }
-
node = mdesc_node_by_name(md, MDESC_NODE_NULL, "latency-groups");
if (node == MDESC_NODE_NULL) {
mdesc_release(md);
@@ -1369,10 +1362,18 @@ static int __init numa_parse_sun4u(void)
static int __init bootmem_init_numa(void)
{
+ int i, j;
int err = -1;
numadbg("bootmem_init_numa()\n");
+ /* Some sane defaults for numa latency values */
+ for (i = 0; i < MAX_NUMNODES; i++) {
+ for (j = 0; j < MAX_NUMNODES; j++)
+ numa_latency[i][j] = (i == j) ?
+ LOCAL_DISTANCE : REMOTE_DISTANCE;
+ }
+
if (numa_enabled) {
if (tlb_type == hypervisor)
err = numa_parse_mdesc();
Patches currently in stable-queue which might be from nitin.m.gupta@xxxxxxxxxx are
queue-4.4/sparc64-reduce-tlb-flushes-during-hugepte-changes.patch
queue-4.4/sparc64-fix-numa-node-distance-initialization.patch
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html