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| author | Tejun Heo <tj@kernel.org> | 2011-04-05 00:23:53 +0200 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2011-04-06 17:57:16 -0700 |
| commit | 7210cf9217937e470a9acbc113a590f476b9c047 (patch) | |
| tree | 7d253d9d701e54710b0d26c67a38b67e860e6a2a /arch/x86/mm/numa_32.c | |
| parent | af7c1a6e8374e05aab4a98ce4d2fb07b66506a02 (diff) | |
| download | linux-7210cf9217937e470a9acbc113a590f476b9c047.tar.gz linux-7210cf9217937e470a9acbc113a590f476b9c047.tar.bz2 linux-7210cf9217937e470a9acbc113a590f476b9c047.zip | |
x86-32, numa: Calculate remap size in common code
Only pgdat and memmap use remap area and there isn't much benefit in
allowing per-node override. In addition, the use of node_remap_size[]
is confusing in that it contains number of bytes before remap
initialization and then number of pages afterwards.
Move remap size calculation for memap from specific NUMA config
implementations to init_alloc_remap() and make node_remap_size[]
static.
The only behavior difference is that, before this patch, numaq_32
didn't consider max_pfn when calculating the memmap size but it's
enforced after this patch, which is the right thing to do.
Signed-off-by: Tejun Heo <tj@kernel.org>
Link: http://lkml.kernel.org/r/1301955840-7246-8-git-send-email-tj@kernel.org
Acked-by: Yinghai Lu <yinghai@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/mm/numa_32.c')
| -rw-r--r-- | arch/x86/mm/numa_32.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/arch/x86/mm/numa_32.c b/arch/x86/mm/numa_32.c index 99310d26fe34..9a7336550f0d 100644 --- a/arch/x86/mm/numa_32.c +++ b/arch/x86/mm/numa_32.c @@ -104,7 +104,7 @@ extern unsigned long highend_pfn, highstart_pfn; #define LARGE_PAGE_BYTES (PTRS_PER_PTE * PAGE_SIZE) -unsigned long node_remap_size[MAX_NUMNODES]; +static unsigned long node_remap_size[MAX_NUMNODES]; static void *node_remap_start_vaddr[MAX_NUMNODES]; void set_pmd_pfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags); @@ -129,7 +129,6 @@ int __init get_memcfg_numa_flat(void) node_end_pfn[0] = max_pfn; memblock_x86_register_active_regions(0, 0, max_pfn); memory_present(0, 0, max_pfn); - node_remap_size[0] = node_memmap_size_bytes(0, 0, max_pfn); /* Indicate there is one node available. */ nodes_clear(node_online_map); @@ -282,11 +281,10 @@ static __init unsigned long init_alloc_remap(int nid, unsigned long offset) if (node_end_pfn[nid] > max_pfn) node_end_pfn[nid] = max_pfn; - /* ensure the remap includes space for the pgdat. */ - size = node_remap_size[nid]; + /* calculate the necessary space aligned to large page size */ + size = node_memmap_size_bytes(nid, node_start_pfn[nid], + min(node_end_pfn[nid], max_pfn)); size += ALIGN(sizeof(pg_data_t), PAGE_SIZE); - - /* align to large page */ size = ALIGN(size, LARGE_PAGE_BYTES); node_pa = memblock_find_in_range(node_start_pfn[nid] << PAGE_SHIFT, |