Node id queried from the static device tree may not
be correct. For example: it may always show 0 on a shared processor.
Hence prefer the node id queried from vphn and fallback on the device tree
based node id if vphn query fails.
Cc: linuxppc-dev@xxxxxxxxxxxxxxxx
Cc: linux-mm@xxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Cc: "Kirill A. Shutemov" <kirill@xxxxxxxxxxxxx>
Cc: Christopher Lameter <cl@xxxxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Srikar Dronamraju <srikar@xxxxxxxxxxxxxxxxxx>
---
arch/powerpc/mm/numa.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 54dcd49..8735fed 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -719,20 +719,20 @@ static int __init parse_numa_properties(void)
*/
for_each_present_cpu(i) {
struct device_node *cpu;
- int nid;
-
- cpu = of_get_cpu_node(i, NULL);
- BUG_ON(!cpu);
- nid = of_node_to_nid_single(cpu);
- of_node_put(cpu);
+ int nid = vphn_get_nid(i);
/*
* Don't fall back to default_nid yet -- we will plug
* cpus into nodes once the memory scan has discovered
* the topology.
*/
- if (nid < 0)
- continue;
+ if (nid == NUMA_NO_NODE) {
+ cpu = of_get_cpu_node(i, NULL);
+ if (cpu) {
+ nid = of_node_to_nid_single(cpu);
+ of_node_put(cpu);
+ }
+ }
node_set_online(nid);
}
--
1.8.3.1
