diff options
| author | Chris Metcalf <cmetcalf@tilera.com> | 2012-04-01 14:01:34 -0400 |
|---|---|---|
| committer | Chris Metcalf <cmetcalf@tilera.com> | 2012-05-25 12:48:26 -0400 |
| commit | d9ed9faac283a3be73f0e11a2ef49ee55aece4db (patch) | |
| tree | 49ec312cc1a066d23d602838d58a1723ec9331e8 | |
| parent | fc0c49f5db640b9dfc7bb801892b5cbb7508a76a (diff) | |
mm: add new arch_make_huge_pte() method for tile support
The tile support for multiple-size huge pages requires tagging
the hugetlb PTE with a "super" bit for PTEs that are multiples of
the basic size of a pagetable span. To set that bit properly
we need to tweak the PTe in make_huge_pte() based on the vma.
This change provides the API for a subsequent tile-specific
change to use.
Reviewed-by: Hillf Danton <dhillf@gmail.com>
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
| -rw-r--r-- | include/linux/hugetlb.h | 8 | ||||
| -rw-r--r-- | mm/hugetlb.c | 1 |
2 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h index 000837e126e..d5d6bbe2259 100644 --- a/include/linux/hugetlb.h +++ b/include/linux/hugetlb.h @@ -284,6 +284,14 @@ static inline unsigned int blocks_per_huge_page(struct hstate *h) #include <asm/hugetlb.h> +#ifndef arch_make_huge_pte +static inline pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma, + struct page *page, int writable) +{ + return entry; +} +#endif + static inline struct hstate *page_hstate(struct page *page) { return size_to_hstate(PAGE_SIZE << compound_order(page)); diff --git a/mm/hugetlb.c b/mm/hugetlb.c index ae8f708e3d7..4e28416c47f 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -2213,6 +2213,7 @@ static pte_t make_huge_pte(struct vm_area_struct *vma, struct page *page, } entry = pte_mkyoung(entry); entry = pte_mkhuge(entry); + entry = arch_make_huge_pte(entry, vma, page, writable); return entry; } |