This is a note to let you know that I've just added the patch titled
of: return NUMA_NO_NODE from fallback of_node_to_nid()
to the 3.14-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:
of-return-numa_no_node-from-fallback-of_node_to_nid.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From c8fff7bc5bba6bd59cad40441c189c4efe7190f6 Mon Sep 17 00:00:00 2001
From: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxxxxxx>
Date: Wed, 8 Apr 2015 19:59:20 +0300
Subject: of: return NUMA_NO_NODE from fallback of_node_to_nid()
From: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxxxxxx>
commit c8fff7bc5bba6bd59cad40441c189c4efe7190f6 upstream.
Node 0 might be offline as well as any other numa node,
in this case kernel cannot handle memory allocation and crashes.
Signed-off-by: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxxxxxx>
Fixes: 0c3f061c195c ("of: implement of_node_to_nid as a weak function")
Signed-off-by: Grant Likely <grant.likely@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/of/base.c | 2 +-
include/linux/of.h | 5 ++++-
2 files changed, 5 insertions(+), 2 deletions(-)
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -77,7 +77,7 @@ EXPORT_SYMBOL(of_n_size_cells);
#ifdef CONFIG_NUMA
int __weak of_node_to_nid(struct device_node *np)
{
- return numa_node_id();
+ return NUMA_NO_NODE;
}
#endif
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -517,7 +517,10 @@ static inline const char *of_prop_next_s
#if defined(CONFIG_OF) && defined(CONFIG_NUMA)
extern int of_node_to_nid(struct device_node *np);
#else
-static inline int of_node_to_nid(struct device_node *device) { return 0; }
+static inline int of_node_to_nid(struct device_node *device)
+{
+ return NUMA_NO_NODE;
+}
#endif
static inline struct device_node *of_find_matching_node(
Patches currently in stable-queue which might be from khlebnikov@xxxxxxxxxxxxxx are
queue-3.14/of-return-numa_no_node-from-fallback-of_node_to_nid.patch
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