[PATCH] Have ia64 use add_active_range() and free_area_init_nodes

Size zones and holes in an architecture independent manner for ia64.

[bob.picco@hp.com: fix ia64 FLATMEM+VIRTUAL_MEM_MAP]
Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Bob Picco <bob.picco@hp.com>
Cc: Dave Hansen <haveblue@us.ibm.com>
Cc: Andy Whitcroft <apw@shadowen.org>
Cc: Andi Kleen <ak@muc.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: "Keith Mannthey" <kmannth@gmail.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Yasunori Goto <y-goto@jp.fujitsu.com>
Signed-off-by: Bob Picco <bob.picco@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 9 insertions, 35 deletions

diff --git a/arch/ia64/mm/discontig.c b/arch/ia64/mm/discontig.c
index d260bffa01ab..7bd28079dcc4 100644
--- a/arch/ia64/mm/discontig.c
+++ b/arch/ia64/mm/discontig.c
@@ -654,6 +654,7 @@ static __init int count_node_pages(unsigned long start, unsigned long len, int n
 {
         unsigned long end = start + len;
 
+        add_active_range(node, start >> PAGE_SHIFT, end >> PAGE_SHIFT);
         mem_data[node].num_physpages += len >> PAGE_SHIFT;
         if (start <= __pa(MAX_DMA_ADDRESS))
                 mem_data[node].num_dma_physpages +=
@@ -678,10 +679,10 @@ static __init int count_node_pages(unsigned long start, unsigned long len, int n
 void __init paging_init(void)
 {
         unsigned long max_dma;
-        unsigned long zones_size[MAX_NR_ZONES];
-        unsigned long zholes_size[MAX_NR_ZONES];
         unsigned long pfn_offset = 0;
+        unsigned long max_pfn = 0;
         int node;
+        unsigned long max_zone_pfns[MAX_NR_ZONES];
 
         max_dma = virt_to_phys((void *) MAX_DMA_ADDRESS) >> PAGE_SHIFT;
 
@@ -698,47 +699,20 @@ void __init paging_init(void)
 #endif
 
         for_each_online_node(node) {
-                memset(zones_size, 0, sizeof(zones_size));
-                memset(zholes_size, 0, sizeof(zholes_size));
-
                 num_physpages += mem_data[node].num_physpages;
-
-                if (mem_data[node].min_pfn >= max_dma) {
-                        /* All of this node's memory is above ZONE_DMA */
-                        zones_size[ZONE_NORMAL] = mem_data[node].max_pfn -
-                                mem_data[node].min_pfn;
-                        zholes_size[ZONE_NORMAL] = mem_data[node].max_pfn -
-                                mem_data[node].min_pfn -
-                                mem_data[node].num_physpages;
-                } else if (mem_data[node].max_pfn < max_dma) {
-                        /* All of this node's memory is in ZONE_DMA */
-                        zones_size[ZONE_DMA] = mem_data[node].max_pfn -
-                                mem_data[node].min_pfn;
-                        zholes_size[ZONE_DMA] = mem_data[node].max_pfn -
-                                mem_data[node].min_pfn -
-                                mem_data[node].num_dma_physpages;
-                } else {
-                        /* This node has memory in both zones */
-                        zones_size[ZONE_DMA] = max_dma -
-                                mem_data[node].min_pfn;
-                        zholes_size[ZONE_DMA] = zones_size[ZONE_DMA] -
-                                mem_data[node].num_dma_physpages;
-                        zones_size[ZONE_NORMAL] = mem_data[node].max_pfn -
-                                max_dma;
-                        zholes_size[ZONE_NORMAL] = zones_size[ZONE_NORMAL] -
-                                (mem_data[node].num_physpages -
-                                 mem_data[node].num_dma_physpages);
-                }
-
                 pfn_offset = mem_data[node].min_pfn;
 
 #ifdef CONFIG_VIRTUAL_MEM_MAP
                 NODE_DATA(node)->node_mem_map = vmem_map + pfn_offset;
 #endif
-                free_area_init_node(node, NODE_DATA(node), zones_size,
-                                    pfn_offset, zholes_size);
+                if (mem_data[node].max_pfn > max_pfn)
+                        max_pfn = mem_data[node].max_pfn;
         }
 
+        max_zone_pfns[ZONE_DMA] = max_dma;
+        max_zone_pfns[ZONE_NORMAL] = max_pfn;
+        free_area_init_nodes(max_zone_pfns);
+
         zero_page_memmap_ptr = virt_to_page(ia64_imva(empty_zero_page));
 }