From edbe7d23b4482e7f33179290bcff3b1feae1c5f3 Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Wed, 25 Aug 2010 13:39:16 -0700 Subject: memblock: Add find_memory_core_early() According to node range in early_node_map[] with __memblock_find_in_range to find free range. Will be used by memblock_x86_find_in_range_node() memblock_x86_find_in_range_node will be used to find right buffer for NODE_DATA Signed-off-by: Yinghai Lu Signed-off-by: H. Peter Anvin --- mm/page_alloc.c | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) (limited to 'mm/page_alloc.c') diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 9bd339eb04c6..8c9b34674d83 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -21,6 +21,7 @@ #include #include #include +#include #include #include #include @@ -3612,6 +3613,41 @@ void __init free_bootmem_with_active_regions(int nid, } } +#ifdef CONFIG_HAVE_MEMBLOCK +u64 __init find_memory_core_early(int nid, u64 size, u64 align, + u64 goal, u64 limit) +{ + int i; + + /* Need to go over early_node_map to find out good range for node */ + for_each_active_range_index_in_nid(i, nid) { + u64 addr; + u64 ei_start, ei_last; + u64 final_start, final_end; + + ei_last = early_node_map[i].end_pfn; + ei_last <<= PAGE_SHIFT; + ei_start = early_node_map[i].start_pfn; + ei_start <<= PAGE_SHIFT; + + final_start = max(ei_start, goal); + final_end = min(ei_last, limit); + + if (final_start >= final_end) + continue; + + addr = memblock_find_in_range(final_start, final_end, size, align); + + if (addr == MEMBLOCK_ERROR) + continue; + + return addr; + } + + return MEMBLOCK_ERROR; +} +#endif + int __init add_from_early_node_map(struct range *range, int az, int nr_range, int nid) { -- cgit v1.2.3