[PATCH RFC 3/5] powerpc:numa create 1:1 mappaing between chipid and nid

[Raghavendra K T]

Once we have made the distinction between nid and chipid
create a 1:1 mapping between them. This makes compacting the
nids easy later.

No functionality change.

Signed-off-by: Raghavendra K T <raghavendra...@linux.vnet.ibm.com>
---
 arch/powerpc/mm/numa.c | 36 +++++++++++++++++++++++++++++-------
 1 file changed, 29 insertions(+), 7 deletions(-)

diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index f84ed2f..dd2073b 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -264,6 +264,17 @@ out:
        return chipid;
 }
 
+
+ /* Return the nid from associativity */
+static int associativity_to_nid(const __be32 *associativity)
+{
+       int nid;
+
+       nid = associativity_to_chipid(associativity);
+       return nid;
+}
+
+
 /* Returns the chipid associated with the given device tree node,
  * or -1 if not found.
  */
@@ -278,6 +289,17 @@ static int of_node_to_chipid_single(struct device_node 
*device)
        return chipid;
 }
 
+/*
+ * Returns nid from the chipid associated with given tree node
+ */
+static int of_node_to_nid_single(struct device_node *device)
+{
+       int nid;
+
+       nid = of_node_to_chipid_single(device);
+       return nid;
+}
+
 /* Walk the device tree upwards, looking for an associativity id */
 int of_node_to_nid(struct device_node *device)
 {
@@ -286,7 +308,7 @@ int of_node_to_nid(struct device_node *device)
 
        of_node_get(device);
        while (device) {
-               nid = of_node_to_chipid_single(device);
+               nid = of_node_to_nid_single(device);
                if (nid != -1)
                        break;
 
@@ -498,7 +520,7 @@ static int of_get_assoc_arrays(struct device_node *memory,
 }
 
 /*
- * This is like of_node_to_chipid_single() for memory represented in the
+ * This is like of_node_to_nid_single() for memory represented in the
  * ibm,dynamic-reconfiguration-memory node.
  */
 static int of_drconf_to_nid_single(struct of_drconf_cell *drmem,
@@ -557,7 +579,7 @@ static int numa_setup_cpu(unsigned long lcpu)
                        goto out;
        }
 
-       nid = of_node_to_chipid_single(cpu);
+       nid = of_node_to_nid_single(cpu);
 
 out_present:
        if (nid < 0 || !node_online(nid))
@@ -754,7 +776,7 @@ static int __init parse_numa_properties(void)
 
                cpu = of_get_cpu_node(i, NULL);
                BUG_ON(!cpu);
-               nid = of_node_to_chipid_single(cpu);
+               nid = of_node_to_nid_single(cpu);
                of_node_put(cpu);
 
                /*
@@ -796,7 +818,7 @@ new_range:
                 * have associativity properties.  If none, then
                 * everything goes to default_nid.
                 */
-               nid = of_node_to_chipid_single(memory);
+               nid = of_node_to_nid_single(memory);
                if (nid < 0)
                        nid = default_nid;
 
@@ -1119,7 +1141,7 @@ static int hot_add_node_scn_to_nid(unsigned long scn_addr)
                        if ((scn_addr < start) || (scn_addr >= (start + size)))
                                continue;
 
-                       nid = of_node_to_chipid_single(memory);
+                       nid = of_node_to_nid_single(memory);
                        break;
                }
 
@@ -1415,7 +1437,7 @@ int arch_update_cpu_topology(void)
 
                /* Use associativity from first thread for all siblings */
                vphn_get_associativity(cpu, associativity);
-               new_nid = associativity_to_chipid(associativity);
+               new_nid = associativity_to_nid(associativity);
                if (new_nid < 0 || !node_online(new_nid))
                        new_nid = first_online_node;
 
-- 
1.7.11.7

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