[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>

diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index f521f2f..d5ee4fc 100644 (file)
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -356,6 +356,9 @@ config NODES_SHIFT
          MAX_NUMNODES will be 2^(This value).
          If in doubt, use the default.
 
+config ARCH_POPULATES_NODE_MAP
+       def_bool y
+
 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
 # VIRTUAL_MEM_MAP has been retained for historical reasons.
 config VIRTUAL_MEM_MAP

diff --git a/arch/ia64/mm/contig.c b/arch/ia64/mm/contig.c
index e004143..719d476 100644 (file)
--- a/arch/ia64/mm/contig.c
+++ b/arch/ia64/mm/contig.c
@@ -26,7 +26,6 @@
 #include <asm/mca.h>
 
 #ifdef CONFIG_VIRTUAL_MEM_MAP
-static unsigned long num_dma_physpages;
 static unsigned long max_gap;
 #endif
 
@@ -218,18 +217,6 @@ count_pages (u64 start, u64 end, void *arg)
        return 0;
 }
 
-#ifdef CONFIG_VIRTUAL_MEM_MAP
-static int
-count_dma_pages (u64 start, u64 end, void *arg)
-{
-       unsigned long *count = arg;
-
-       if (start < MAX_DMA_ADDRESS)
-               *count += (min(end, MAX_DMA_ADDRESS) - start) >> PAGE_SHIFT;
-       return 0;
-}
-#endif
-
 /*
  * Set up the page tables.
  */
@@ -238,45 +225,22 @@ void __init
 paging_init (void)
 {
        unsigned long max_dma;
-       unsigned long zones_size[MAX_NR_ZONES];
-#ifdef CONFIG_VIRTUAL_MEM_MAP
-       unsigned long zholes_size[MAX_NR_ZONES];
-#endif
-
-       /* initialize mem_map[] */
-
-       memset(zones_size, 0, sizeof(zones_size));
+       unsigned long nid = 0;
+       unsigned long max_zone_pfns[MAX_NR_ZONES];
 
        num_physpages = 0;
        efi_memmap_walk(count_pages, &num_physpages);
 
        max_dma = virt_to_phys((void *) MAX_DMA_ADDRESS) >> PAGE_SHIFT;
+       max_zone_pfns[ZONE_DMA] = max_dma;
+       max_zone_pfns[ZONE_NORMAL] = max_low_pfn;
 
 #ifdef CONFIG_VIRTUAL_MEM_MAP
-       memset(zholes_size, 0, sizeof(zholes_size));
-
-       num_dma_physpages = 0;
-       efi_memmap_walk(count_dma_pages, &num_dma_physpages);
-
-       if (max_low_pfn < max_dma) {
-               zones_size[ZONE_DMA] = max_low_pfn;
-               zholes_size[ZONE_DMA] = max_low_pfn - num_dma_physpages;
-       } else {
-               zones_size[ZONE_DMA] = max_dma;
-               zholes_size[ZONE_DMA] = max_dma - num_dma_physpages;
-               if (num_physpages > num_dma_physpages) {
-                       zones_size[ZONE_NORMAL] = max_low_pfn - max_dma;
-                       zholes_size[ZONE_NORMAL] =
-                               ((max_low_pfn - max_dma) -
-                                (num_physpages - num_dma_physpages));
-               }
-       }
-
+       efi_memmap_walk(register_active_ranges, &nid);
        efi_memmap_walk(find_largest_hole, (u64 *)&max_gap);
        if (max_gap < LARGE_GAP) {
                vmem_map = (struct page *) 0;
-               free_area_init_node(0, NODE_DATA(0), zones_size, 0,
-                                   zholes_size);
+               free_area_init_nodes(max_zone_pfns);
        } else {
                unsigned long map_size;
 
@@ -288,20 +252,19 @@ paging_init (void)
                vmem_map = (struct page *) vmalloc_end;
                efi_memmap_walk(create_mem_map_page_table, NULL);
 
-               NODE_DATA(0)->node_mem_map = vmem_map;
-               free_area_init_node(0, NODE_DATA(0), zones_size,
-                                   0, zholes_size);
+               /*
+                * alloc_node_mem_map makes an adjustment for mem_map
+                * which isn't compatible with vmem_map.
+                */
+               NODE_DATA(0)->node_mem_map = vmem_map +
+                       find_min_pfn_with_active_regions();
+               free_area_init_nodes(max_zone_pfns);
 
                printk("Virtual mem_map starts at 0x%p\n", mem_map);
        }
 #else /* !CONFIG_VIRTUAL_MEM_MAP */
-       if (max_low_pfn < max_dma)
-               zones_size[ZONE_DMA] = max_low_pfn;
-       else {
-               zones_size[ZONE_DMA] = max_dma;
-               zones_size[ZONE_NORMAL] = max_low_pfn - max_dma;
-       }
-       free_area_init(zones_size);
+       add_active_range(0, 0, max_low_pfn);
+       free_area_init_nodes(max_zone_pfns);
 #endif /* !CONFIG_VIRTUAL_MEM_MAP */
        zero_page_memmap_ptr = virt_to_page(ia64_imva(empty_zero_page));
 }

diff --git a/arch/ia64/mm/discontig.c b/arch/ia64/mm/discontig.c
index d260bff..7bd2807 100644 (file)
--- 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));
 }
 

diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index 30617cc..ff87a5c 100644 (file)
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -593,6 +593,18 @@ find_largest_hole (u64 start, u64 end, void *arg)
        last_end = end;
        return 0;
 }
+
+int __init
+register_active_ranges(u64 start, u64 end, void *nid)
+{
+       BUG_ON(nid == NULL);
+       BUG_ON(*(unsigned long *)nid >= MAX_NUMNODES);
+
+       add_active_range(*(unsigned long *)nid,
+                               __pa(start) >> PAGE_SHIFT,
+                               __pa(end) >> PAGE_SHIFT);
+       return 0;
+}
 #endif /* CONFIG_VIRTUAL_MEM_MAP */
 
 static int __init

diff --git a/include/asm-ia64/meminit.h b/include/asm-ia64/meminit.h
index 6a33a07..c3b1f86 100644 (file)
--- a/include/asm-ia64/meminit.h
+++ b/include/asm-ia64/meminit.h
@@ -55,6 +55,7 @@ extern void efi_memmap_init(unsigned long *, unsigned long *);
   extern unsigned long vmalloc_end;
   extern struct page *vmem_map;
   extern int find_largest_hole (u64 start, u64 end, void *arg);
+  extern int register_active_ranges (u64 start, u64 end, void *arg);
   extern int create_mem_map_page_table (u64 start, u64 end, void *arg);
   extern int vmemmap_find_next_valid_pfn(int, int);
 #else