[PATCH] Have Power use add_active_range() and free_area_init_nodes()

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

[judith@osdl.org: build fix]
Signed-off-by: Mel Gorman <mel@csn.ul.ie>
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: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 19 insertions, 32 deletions

diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index eebd8b83a6b0..16fe027bbc12 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -256,20 +256,22 @@ void __init do_init_bootmem(void)
 
         boot_mapsize = init_bootmem(start >> PAGE_SHIFT, total_pages);
 
+        /* Add active regions with valid PFNs */
+        for (i = 0; i < lmb.memory.cnt; i++) {
+                unsigned long start_pfn, end_pfn;
+                start_pfn = lmb.memory.region[i].base >> PAGE_SHIFT;
+                end_pfn = start_pfn + lmb_size_pages(&lmb.memory, i);
+                add_active_range(0, start_pfn, end_pfn);
+        }
+
         /* Add all physical memory to the bootmem map, mark each area
          * present.
          */
-        for (i = 0; i < lmb.memory.cnt; i++) {
-                unsigned long base = lmb.memory.region[i].base;
-                unsigned long size = lmb_size_bytes(&lmb.memory, i);
 #ifdef CONFIG_HIGHMEM
-                if (base >= total_lowmem)
-                        continue;
-                if (base + size > total_lowmem)
-                        size = total_lowmem - base;
+        free_bootmem_with_active_regions(0, total_lowmem >> PAGE_SHIFT);
+#else
+        free_bootmem_with_active_regions(0, max_pfn);
 #endif
-                free_bootmem(base, size);
-        }
 
         /* reserve the sections we're already using */
         for (i = 0; i < lmb.reserved.cnt; i++)
@@ -277,9 +279,8 @@ void __init do_init_bootmem(void)
                                 lmb_size_bytes(&lmb.reserved, i));
 
         /* XXX need to clip this if using highmem? */
-        for (i = 0; i < lmb.memory.cnt; i++)
-                memory_present(0, lmb_start_pfn(&lmb.memory, i),
-                               lmb_end_pfn(&lmb.memory, i));
+        sparse_memory_present_with_active_regions(0);
+
         init_bootmem_done = 1;
 }
 
@@ -288,10 +289,9 @@ void __init do_init_bootmem(void)
  */
 void __init paging_init(void)
 {
-        unsigned long zones_size[MAX_NR_ZONES];
-        unsigned long zholes_size[MAX_NR_ZONES];
         unsigned long total_ram = lmb_phys_mem_size();
         unsigned long top_of_ram = lmb_end_of_DRAM();
+        unsigned long max_zone_pfns[MAX_NR_ZONES];
 
 #ifdef CONFIG_HIGHMEM
         map_page(PKMAP_BASE, 0, 0);     /* XXX gross */
@@ -307,26 +307,13 @@ void __init paging_init(void)
                top_of_ram, total_ram);
         printk(KERN_DEBUG "Memory hole size: %ldMB\n",
                (top_of_ram - total_ram) >> 20);
-        /*
-         * All pages are DMA-able so we put them all in the DMA zone.
-         */
-        memset(zones_size, 0, sizeof(zones_size));
-        memset(zholes_size, 0, sizeof(zholes_size));
-
-        zones_size[ZONE_DMA] = top_of_ram >> PAGE_SHIFT;
-        zholes_size[ZONE_DMA] = (top_of_ram - total_ram) >> PAGE_SHIFT;
-
 #ifdef CONFIG_HIGHMEM
-        zones_size[ZONE_DMA] = total_lowmem >> PAGE_SHIFT;
-        zones_size[ZONE_HIGHMEM] = (total_memory - total_lowmem) >> PAGE_SHIFT;
-        zholes_size[ZONE_HIGHMEM] = (top_of_ram - total_ram) >> PAGE_SHIFT;
+        max_zone_pfns[0] = total_lowmem >> PAGE_SHIFT;
+        max_zone_pfns[1] = top_of_ram >> PAGE_SHIFT;
 #else
-        zones_size[ZONE_DMA] = top_of_ram >> PAGE_SHIFT;
-        zholes_size[ZONE_DMA] = (top_of_ram - total_ram) >> PAGE_SHIFT;
-#endif /* CONFIG_HIGHMEM */
-
-        free_area_init_node(0, NODE_DATA(0), zones_size,
-                            __pa(PAGE_OFFSET) >> PAGE_SHIFT, zholes_size);
+        max_zone_pfns[0] = top_of_ram >> PAGE_SHIFT;
+#endif
+        free_area_init_nodes(max_zone_pfns);
 }
 #endif /* ! CONFIG_NEED_MULTIPLE_NODES */