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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2014-08-06 23:36:12 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2014-08-06 23:36:12 -0700 |
| commit | 5e2aa2ed08e2e280121dc7cf5609c87d464f12ef (patch) | |
| tree | ca7d7b1480285e3b617fecc5b41f0ce150a82c32 /include/linux/hugetlb.h | |
| parent | f62d14a8072b9756db36ba394e2b267470a40240 (diff) | |
| parent | fc8104bc5a3f6f49d79f45f2706f79f77a9fb2ae (diff) | |
Merge branch 'next' into for-linus
Prepare first round of input updates for 3.17.
Diffstat (limited to 'include/linux/hugetlb.h')
| -rw-r--r-- | include/linux/hugetlb.h | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h index b65166de1d9d..255cd5cc0754 100644 --- a/include/linux/hugetlb.h +++ b/include/linux/hugetlb.h @@ -343,6 +343,11 @@ static inline unsigned huge_page_shift(struct hstate *h) return h->order + PAGE_SHIFT; } +static inline bool hstate_is_gigantic(struct hstate *h) +{ + return huge_page_order(h) >= MAX_ORDER; +} + static inline unsigned int pages_per_huge_page(struct hstate *h) { return 1 << h->order; @@ -392,15 +397,13 @@ static inline pgoff_t basepage_index(struct page *page) extern void dissolve_free_huge_pages(unsigned long start_pfn, unsigned long end_pfn); -int pmd_huge_support(void); -/* - * Currently hugepage migration is enabled only for pmd-based hugepage. - * This function will be updated when hugepage migration is more widely - * supported. - */ -static inline int hugepage_migration_support(struct hstate *h) +static inline int hugepage_migration_supported(struct hstate *h) { - return pmd_huge_support() && (huge_page_shift(h) == PMD_SHIFT); +#ifdef CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION + return huge_page_shift(h) == PMD_SHIFT; +#else + return 0; +#endif } static inline spinlock_t *huge_pte_lockptr(struct hstate *h, @@ -450,8 +453,7 @@ static inline pgoff_t basepage_index(struct page *page) return page->index; } #define dissolve_free_huge_pages(s, e) do {} while (0) -#define pmd_huge_support() 0 -#define hugepage_migration_support(h) 0 +#define hugepage_migration_supported(h) 0 static inline spinlock_t *huge_pte_lockptr(struct hstate *h, struct mm_struct *mm, pte_t *pte) |