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authorMichael Ellerman <michael@ellerman.id.au>2011-04-10 20:42:05 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2011-04-27 14:18:35 +1000
commite70606eb9beb683ce3991936267deab64ab56d95 (patch)
tree76f6150ee5dda255c6ae47b7e6eff732973eda71 /arch/powerpc/mm
parent69b123684b50040b0926eed1e02795dac8cb9587 (diff)
downloadlinaro-lsk-e70606eb9beb683ce3991936267deab64ab56d95.tar.gz
powerpc/numa: Look for ibm, associativity-reference-points at the root
If we don't find ibm,associativity-reference-points as a child of /rtas, look for it at the root of the tree instead. We use this on Book3E where we have no RTAS but still use the sPAPR conventions for NUMA. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/mm')
-rw-r--r--arch/powerpc/mm/numa.c15
1 files changed, 7 insertions, 8 deletions
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 5ec1dad2a19..e49b799b59a 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -311,14 +311,13 @@ EXPORT_SYMBOL_GPL(of_node_to_nid);
static int __init find_min_common_depth(void)
{
int depth;
- struct device_node *rtas_root;
struct device_node *chosen;
+ struct device_node *root;
const char *vec5;
- rtas_root = of_find_node_by_path("/rtas");
-
- if (!rtas_root)
- return -1;
+ root = of_find_node_by_path("/rtas");
+ if (!root)
+ root = of_find_node_by_path("/");
/*
* This property is a set of 32-bit integers, each representing
@@ -332,7 +331,7 @@ static int __init find_min_common_depth(void)
* NUMA boundary and the following are progressively less significant
* boundaries. There can be more than one level of NUMA.
*/
- distance_ref_points = of_get_property(rtas_root,
+ distance_ref_points = of_get_property(root,
"ibm,associativity-reference-points",
&distance_ref_points_depth);
@@ -376,11 +375,11 @@ static int __init find_min_common_depth(void)
distance_ref_points_depth = MAX_DISTANCE_REF_POINTS;
}
- of_node_put(rtas_root);
+ of_node_put(root);
return depth;
err:
- of_node_put(rtas_root);
+ of_node_put(root);
return -1;
}