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[PATCH] Add NUMA policy support for huge pages.

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The huge_zonelist() function in the memory policy layer provides an list of
zones ordered by NUMA distance.  The hugetlb layer will walk that list looking
for a zone that has available huge pages but is also in the nodeset of the
current cpuset.

This patch does not contain the folding of find_or_alloc_huge_page() that was
controversial in the earlier discussion.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Cc: Andi Kleen <ak@muc.de>
Acked-by: William Lee Irwin III <wli@holomorphy.com>
Cc: Adam Litke <agl@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Christoph Lameter 2006-01-06 00:10:46 -08:00 • committed by Linus Torvalds
parent 96df9333c9
commit 5da7ca8607
4 changed files with 54 additions and 21 deletions
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4
include/linux/hugetlb.h
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@ -22,7 +22,7 @@ int hugetlb_report_meminfo(char *);
int hugetlb_report_node_meminfo(int, char *);
int is_hugepage_mem_enough(size_t);
unsigned long hugetlb_total_pages(void);
struct page *alloc_huge_page(void);
struct page *alloc_huge_page(struct vm_area_struct *, unsigned long);
void free_huge_page(struct page *);
int hugetlb_fault(struct mm_struct *mm, struct vm_area_struct *vma,
unsigned long address, int write_access);
@ -97,7 +97,7 @@ static inline unsigned long hugetlb_total_pages(void)
#define is_hugepage_only_range(mm, addr, len) 0
#define hugetlb_free_pgd_range(tlb, addr, end, floor, ceiling) \
do { } while (0)
#define alloc_huge_page() ({ NULL; })
#define alloc_huge_page(vma, addr) ({ NULL; })
#define free_huge_page(p) ({ (void)(p); BUG(); })
#define hugetlb_fault(mm, vma, addr, write) ({ BUG(); 0; })