From 30c253e6da655d73eb8bfe2adca9b8f4d82fb81e Mon Sep 17 00:00:00 2001 From: Andy Whitcroft Date: Fri, 23 Jun 2006 02:03:41 -0700 Subject: [PATCH] sparsemem: record nid during memory present Record the node id as we mark sections for instantiation. Use this nid during instantiation to direct allocations. Signed-off-by: Andy Whitcroft Cc: Mike Kravetz Cc: Dave Hansen Cc: Mel Gorman Cc: Bob Picco Cc: Jack Steiner Cc: Yasunori Goto Cc: Martin Bligh Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mmzone.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux/mmzone.h') diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index e82fc1a52cd0..d6120fa69116 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -509,6 +509,10 @@ struct mem_section { * pages. However, it is stored with some other magic. * (see sparse.c::sparse_init_one_section()) * + * Additionally during early boot we encode node id of + * the location of the section here to guide allocation. + * (see sparse.c::memory_present()) + * * Making it a UL at least makes someone do a cast * before using it wrong. */ @@ -548,6 +552,7 @@ extern int __section_nr(struct mem_section* ms); #define SECTION_HAS_MEM_MAP (1UL<<1) #define SECTION_MAP_LAST_BIT (1UL<<2) #define SECTION_MAP_MASK (~(SECTION_MAP_LAST_BIT-1)) +#define SECTION_NID_SHIFT 2 static inline struct page *__section_mem_map_addr(struct mem_section *section) { -- cgit v1.2.3-59-g8ed1b