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authorChristoph Lameter <clameter@engr.sgi.com>2006-01-06 00:10:46 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-06 08:33:23 -0800
commit5da7ca86078964cbfe6c83efc1205904587706fe (patch)
treea64a7824e90b42d6fdd71e6cb652362beb8983a1 /include
parent96df9333c94d7d5aeceb21f6c5e7ae8ff34753cf (diff)
[PATCH] Add NUMA policy support for huge pages.
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>
Diffstat (limited to 'include')
-rw-r--r--include/linux/hugetlb.h4
-rw-r--r--include/linux/mempolicy.h8
2 files changed, 10 insertions, 2 deletions
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 1056717ee50..68d82ad6b17 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -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; })
diff --git a/include/linux/mempolicy.h b/include/linux/mempolicy.h
index 8b67cf837ca..817db642711 100644
--- a/include/linux/mempolicy.h
+++ b/include/linux/mempolicy.h
@@ -156,6 +156,8 @@ extern void numa_default_policy(void);
extern void numa_policy_init(void);
extern void numa_policy_rebind(const nodemask_t *old, const nodemask_t *new);
extern struct mempolicy default_policy;
+extern struct zonelist *huge_zonelist(struct vm_area_struct *vma,
+ unsigned long addr);
#else
@@ -232,6 +234,12 @@ static inline void numa_policy_rebind(const nodemask_t *old,
{
}
+static inline struct zonelist *huge_zonelist(struct vm_area_struct *vma,
+ unsigned long addr)
+{
+ return NODE_DATA(0)->node_zonelists + gfp_zone(GFP_HIGHUSER);
+}
+
#endif /* CONFIG_NUMA */
#endif /* __KERNEL__ */