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Message-ID: <20070117131904.GB27728@localhost>
Date: Wed, 17 Jan 2007 08:19:04 -0500
From: "Bob Picco" <bob.picco@...com>
To: akpm@...l.org
Cc: mel@....ul.ie, apw@...dowen.org, tony.luck@...el.com, ak@....de,
bob.picco@...com, linux-ia64@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH] clean up sparsemem memory_present calls for ia64 and x86_64
Eliminate arch specific memory_present calls for ia64 NUMA and x86_64 NUMA by
utilizing sparse_memory_present_with_active_regions. It was boot tested
for both arches.
Acked-by: Mel Gorman <mel@....ul.ie>
Signed-off-by: Bob Picco <bob.picco@...com>
arch/ia64/mm/discontig.c | 36 +++---------------------------------
arch/x86_64/mm/numa.c | 17 ++---------------
2 files changed, 5 insertions(+), 48 deletions(-)
Index: linux-2.6.20-rc4/arch/ia64/mm/discontig.c
===================================================================
--- linux-2.6.20-rc4.orig/arch/ia64/mm/discontig.c 2007-01-11 12:11:54.000000000 -0500
+++ linux-2.6.20-rc4/arch/ia64/mm/discontig.c 2007-01-11 12:12:38.000000000 -0500
@@ -412,37 +412,6 @@ static void __init memory_less_nodes(voi
return;
}
-#ifdef CONFIG_SPARSEMEM
-/**
- * register_sparse_mem - notify SPARSEMEM that this memory range exists.
- * @start: physical start of range
- * @end: physical end of range
- * @arg: unused
- *
- * Simply calls SPARSEMEM to register memory section(s).
- */
-static int __init register_sparse_mem(unsigned long start, unsigned long end,
- void *arg)
-{
- int nid;
-
- start = __pa(start) >> PAGE_SHIFT;
- end = __pa(end) >> PAGE_SHIFT;
- nid = early_pfn_to_nid(start);
- memory_present(nid, start, end);
-
- return 0;
-}
-
-static void __init arch_sparse_init(void)
-{
- efi_memmap_walk(register_sparse_mem, NULL);
- sparse_init();
-}
-#else
-#define arch_sparse_init() do {} while (0)
-#endif
-
/**
* find_memory - walk the EFI memory map and setup the bootmem allocator
*
@@ -688,10 +657,11 @@ void __init paging_init(void)
max_dma = virt_to_phys((void *) MAX_DMA_ADDRESS) >> PAGE_SHIFT;
- arch_sparse_init();
-
efi_memmap_walk(filter_rsvd_memory, count_node_pages);
+ sparse_memory_present_with_active_regions(MAX_NUMNODES);
+ sparse_init();
+
#ifdef CONFIG_VIRTUAL_MEM_MAP
vmalloc_end -= PAGE_ALIGN(ALIGN(max_low_pfn, MAX_ORDER_NR_PAGES) *
sizeof(struct page));
Index: linux-2.6.20-rc4/arch/x86_64/mm/numa.c
===================================================================
--- linux-2.6.20-rc4.orig/arch/x86_64/mm/numa.c 2007-01-11 12:11:08.000000000 -0500
+++ linux-2.6.20-rc4/arch/x86_64/mm/numa.c 2007-01-11 12:11:57.000000000 -0500
@@ -321,20 +321,6 @@ unsigned long __init numa_free_all_bootm
return pages;
}
-#ifdef CONFIG_SPARSEMEM
-static void __init arch_sparse_init(void)
-{
- int i;
-
- for_each_online_node(i)
- memory_present(i, node_start_pfn(i), node_end_pfn(i));
-
- sparse_init();
-}
-#else
-#define arch_sparse_init() do {} while (0)
-#endif
-
void __init paging_init(void)
{
int i;
@@ -344,7 +330,8 @@ void __init paging_init(void)
max_zone_pfns[ZONE_DMA32] = MAX_DMA32_PFN;
max_zone_pfns[ZONE_NORMAL] = end_pfn;
- arch_sparse_init();
+ sparse_memory_present_with_active_regions(MAX_NUMNODES);
+ sparse_init();
for_each_online_node(i) {
setup_node_zones(i);
-
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