[PATCH] powerpc numa: Consolidate assignment of cpus to nodes

We can plug the boot cpu into its node independently of whether numa
topology is detected.  And numa_setup_cpu does the right thing for all
cases now, so remove special-casing for non-numa from the cpu hotplug
callback.

Signed-off-by: Nathan Lynch <nathanl@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 3 insertions, 7 deletions

diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 7d6ebe3c3b9b..e89b22aa539e 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -321,10 +321,7 @@ static int cpu_numa_callback(struct notifier_block *nfb,
 
         switch (action) {
         case CPU_UP_PREPARE:
-                if (min_common_depth == -1 || !numa_enabled)
-                        map_cpu_to_node(lcpu, 0);
-                else
-                        numa_setup_cpu(lcpu);
+                numa_setup_cpu(lcpu);
                 ret = NOTIFY_OK;
                 break;
 #ifdef CONFIG_HOTPLUG_CPU
@@ -459,8 +456,6 @@ new_range:
                         goto new_range;
         }
 
-        numa_setup_cpu(boot_cpuid);
-
         return 0;
 }
 
@@ -475,7 +470,6 @@ static void __init setup_nonnuma(void)
         printk(KERN_INFO "Memory hole size: %ldMB\n",
                (top_of_ram - total_ram) >> 20);
 
-        map_cpu_to_node(boot_cpuid, 0);
         for (i = 0; i < lmb.memory.cnt; ++i)
                 add_region(0, lmb.memory.region[i].base >> PAGE_SHIFT,
                            lmb_size_pages(&lmb.memory, i));
@@ -612,6 +606,8 @@ void __init do_init_bootmem(void)
                 dump_numa_memory_topology();
 
         register_cpu_notifier(&ppc64_numa_nb);
+        cpu_numa_callback(&ppc64_numa_nb, CPU_UP_PREPARE,
+                          (void *)(unsigned long)boot_cpuid);
 
         for_each_online_node(nid) {
                 unsigned long start_pfn, end_pfn, pages_present;