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authorBob Picco <bob.picco@hp.com>2007-01-30 05:11:09 -0500
committerTony Luck <tony.luck@intel.com>2007-02-05 18:07:47 -0500
commit139b830477ccdca21b68c40f9a83ec327e65eb56 (patch)
tree0aab2140315579525dfef89189b9bea5033af2ba /include/asm-ia64/meminit.h
parentd1598e05faa11d9f04e0a226122dd57674fb1dab (diff)
[IA64] register memory ranges in a consistent manner
While pursuing and unrelated issue with 64Mb granules I noticed a problem related to inconsistent use of add_active_range. There doesn't appear any reason to me why FLATMEM versus DISCONTIG_MEM should register memory to add_active_range with different code. So I've changed the code into a common implementation. The other subtle issue fixed by this patch was calling add_active_range in count_node_pages before granule aligning is performed. We were lucky with 16MB granules but not so with 64MB granules. count_node_pages has reserved regions filtered out and as a consequence linked kernel text and data aren't covered by calls to count_node_pages. So linked kernel regions wasn't reported to add_active_regions. This resulted in free_initmem causing numerous bad_page reports. This won't occur with this patch because now all known memory regions are reported by register_active_ranges. Acked-by: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Bob Picco <bob.picco@hp.com> Acked-by: Simon Horman <horms@verge.net.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'include/asm-ia64/meminit.h')
-rw-r--r--include/asm-ia64/meminit.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/asm-ia64/meminit.h b/include/asm-ia64/meminit.h
index c8df75901083..6dd476b652c6 100644
--- a/include/asm-ia64/meminit.h
+++ b/include/asm-ia64/meminit.h
@@ -51,12 +51,13 @@ extern void efi_memmap_init(unsigned long *, unsigned long *);
51 51
52#define IGNORE_PFN0 1 /* XXX fix me: ignore pfn 0 until TLB miss handler is updated... */ 52#define IGNORE_PFN0 1 /* XXX fix me: ignore pfn 0 until TLB miss handler is updated... */
53 53
54extern int register_active_ranges(u64 start, u64 end, void *arg);
55
54#ifdef CONFIG_VIRTUAL_MEM_MAP 56#ifdef CONFIG_VIRTUAL_MEM_MAP
55# define LARGE_GAP 0x40000000 /* Use virtual mem map if hole is > than this */ 57# define LARGE_GAP 0x40000000 /* Use virtual mem map if hole is > than this */
56 extern unsigned long vmalloc_end; 58 extern unsigned long vmalloc_end;
57 extern struct page *vmem_map; 59 extern struct page *vmem_map;
58 extern int find_largest_hole (u64 start, u64 end, void *arg); 60 extern int find_largest_hole (u64 start, u64 end, void *arg);
59 extern int register_active_ranges (u64 start, u64 end, void *arg);
60 extern int create_mem_map_page_table (u64 start, u64 end, void *arg); 61 extern int create_mem_map_page_table (u64 start, u64 end, void *arg);
61 extern int vmemmap_find_next_valid_pfn(int, int); 62 extern int vmemmap_find_next_valid_pfn(int, int);
62#else 63#else