x86, NUMA: Make 32bit use common NUMA init path

With both _numa_init() methods converted and the rest of init code
adjusted, numa_32.c now can switch from the 32bit only init code to
the common one in numa.c.

* Shim get_memcfg_*()'s are dropped and initmem_init() calls
  x86_numa_init(), which is updated to handle NUMAQ.

* All boilerplate operations including node range limiting, pgdat
  alloc/init are handled by numa_init().  32bit only implementation is
  removed.

* 32bit numa_add_memblk(), numa_set_distance() and
  memory_add_physaddr_to_nid() removed and common versions in
  numa_32.c enabled for 32bit.

This change causes the following behavior changes.

* NODE_DATA()->node_start_pfn/node_spanned_pages properly initialized
  for 32bit too.

* Much more sanity checks and configuration cleanups.

* Proper handling of node distances.

* The same NUMA init messages as 64bit.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>

1 files changed, 5 insertions, 5 deletions

diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c
index a72317ae74c5..56ed714ed24f 100644
--- a/arch/x86/mm/numa.c
+++ b/arch/x86/mm/numa.c
@@ -173,7 +173,6 @@ void __init numa_remove_memblk_from(int idx, struct numa_meminfo *mi)
                 (mi->nr_blks - idx) * sizeof(mi->blk[0]));
 }
 
-#ifdef CONFIG_X86_64
 /**
  * numa_add_memblk - Add one numa_memblk to numa_meminfo
  * @nid: NUMA node ID of the new memblk
@@ -189,7 +188,6 @@ int __init numa_add_memblk(int nid, u64 start, u64 end)
 {
         return numa_add_memblk_to(nid, start, end, &numa_meminfo);
 }
-#endif
 
 /* Initialize bootmem allocator for a node */
 static void __init setup_node_bootmem(int nid, u64 start, u64 end)
@@ -413,7 +411,6 @@ static int __init numa_alloc_distance(void)
         return 0;
 }
 
-#ifdef CONFIG_X86_64
 /**
  * numa_set_distance - Set NUMA distance from one NUMA to another
  * @from: the 'from' node to set distance
@@ -452,7 +449,6 @@ void __init numa_set_distance(int from, int to, int distance)
 
         numa_distance[from * numa_distance_cnt + to] = distance;
 }
-#endif
 
 int __node_distance(int from, int to)
 {
@@ -626,6 +622,10 @@ static int __init dummy_numa_init(void)
 void __init x86_numa_init(void)
 {
         if (!numa_off) {
+#ifdef CONFIG_X86_NUMAQ
+                if (!numa_init(numaq_numa_init))
+                        return;
+#endif
 #ifdef CONFIG_ACPI_NUMA
                 if (!numa_init(x86_acpi_numa_init))
                         return;
@@ -805,7 +805,7 @@ EXPORT_SYMBOL(cpumask_of_node);
 
 #endif  /* !CONFIG_DEBUG_PER_CPU_MAPS */
 
-#if defined(CONFIG_X86_64) && defined(CONFIG_MEMORY_HOTPLUG)
+#ifdef CONFIG_MEMORY_HOTPLUG
 int memory_add_physaddr_to_nid(u64 start)
 {
         struct numa_meminfo *mi = &numa_meminfo;