[DEBUG 02/10] powerpc/mm: Create numa nodes for hotplug memory

[Anshuman Khandual]

From: Reza Arbab <ar...@linux.vnet.ibm.com>

When scanning the device tree to initialize the system NUMA topology,
process dt elements with compatible id "ibm,hotplug-aperture" to create
memoryless numa nodes.

These nodes will be filled when hotplug occurs within the associated
address range.

Signed-off-by: Reza Arbab <ar...@linux.vnet.ibm.com>
Signed-off-by: Anshuman Khandual <khand...@linux.vnet.ibm.com>
---
 arch/powerpc/mm/numa.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index a51c188..42fcc8e 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -708,6 +708,12 @@ static void __init parse_drconf_memory(struct device_node 
*memory)
        }
 }
 
+static const struct of_device_id memory_match[] = {
+       { .type = "memory" },
+       { .compatible = "ibm,hotplug-aperture" },
+       { /* sentinel */ }
+};
+
 static int __init parse_numa_properties(void)
 {
        struct device_node *memory;
@@ -752,7 +758,7 @@ static int __init parse_numa_properties(void)
 
        get_n_mem_cells(&n_mem_addr_cells, &n_mem_size_cells);
 
-       for_each_node_by_type(memory, "memory") {
+       for_each_matching_node(memory, memory_match) {
                unsigned long start;
                unsigned long size;
                int nid;
@@ -1044,7 +1050,7 @@ static int hot_add_node_scn_to_nid(unsigned long scn_addr)
        struct device_node *memory;
        int nid = -1;
 
-       for_each_node_by_type(memory, "memory") {
+       for_each_matching_node(memory, memory_match) {
                unsigned long start, size;
                int ranges;
                const __be32 *memcell_buf;
-- 
2.1.0