summaryrefslogtreecommitdiff
path: root/include/linux
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/gfp.h3
-rw-r--r--include/linux/huge_mm.h118
-rw-r--r--include/linux/mm.h4
-rw-r--r--include/linux/mm_inline.h11
-rw-r--r--include/linux/page-flags.h21
-rw-r--r--include/linux/rmap.h2
-rw-r--r--include/linux/swap.h2
7 files changed, 159 insertions, 2 deletions
diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index 49d2356bb82d..d95082cc6f4a 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -109,6 +109,9 @@ struct vm_area_struct;
__GFP_HARDWALL | __GFP_HIGHMEM | \
__GFP_MOVABLE)
#define GFP_IOFS (__GFP_IO | __GFP_FS)
+#define GFP_TRANSHUGE (GFP_HIGHUSER_MOVABLE | __GFP_COMP | \
+ __GFP_NOMEMALLOC | __GFP_NORETRY | __GFP_NOWARN | \
+ __GFP_NO_KSWAPD)
#ifdef CONFIG_NUMA
#define GFP_THISNODE (__GFP_THISNODE | __GFP_NOWARN | __GFP_NORETRY)
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
new file mode 100644
index 000000000000..9301824c7491
--- /dev/null
+++ b/include/linux/huge_mm.h
@@ -0,0 +1,118 @@
+#ifndef _LINUX_HUGE_MM_H
+#define _LINUX_HUGE_MM_H
+
+extern int do_huge_pmd_anonymous_page(struct mm_struct *mm,
+ struct vm_area_struct *vma,
+ unsigned long address, pmd_t *pmd,
+ unsigned int flags);
+extern int copy_huge_pmd(struct mm_struct *dst_mm, struct mm_struct *src_mm,
+ pmd_t *dst_pmd, pmd_t *src_pmd, unsigned long addr,
+ struct vm_area_struct *vma);
+extern int do_huge_pmd_wp_page(struct mm_struct *mm, struct vm_area_struct *vma,
+ unsigned long address, pmd_t *pmd,
+ pmd_t orig_pmd);
+extern pgtable_t get_pmd_huge_pte(struct mm_struct *mm);
+extern struct page *follow_trans_huge_pmd(struct mm_struct *mm,
+ unsigned long addr,
+ pmd_t *pmd,
+ unsigned int flags);
+extern int zap_huge_pmd(struct mmu_gather *tlb,
+ struct vm_area_struct *vma,
+ pmd_t *pmd);
+
+enum transparent_hugepage_flag {
+ TRANSPARENT_HUGEPAGE_FLAG,
+ TRANSPARENT_HUGEPAGE_REQ_MADV_FLAG,
+ TRANSPARENT_HUGEPAGE_DEFRAG_FLAG,
+ TRANSPARENT_HUGEPAGE_DEFRAG_REQ_MADV_FLAG,
+#ifdef CONFIG_DEBUG_VM
+ TRANSPARENT_HUGEPAGE_DEBUG_COW_FLAG,
+#endif
+};
+
+enum page_check_address_pmd_flag {
+ PAGE_CHECK_ADDRESS_PMD_FLAG,
+ PAGE_CHECK_ADDRESS_PMD_NOTSPLITTING_FLAG,
+ PAGE_CHECK_ADDRESS_PMD_SPLITTING_FLAG,
+};
+extern pmd_t *page_check_address_pmd(struct page *page,
+ struct mm_struct *mm,
+ unsigned long address,
+ enum page_check_address_pmd_flag flag);
+
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
+#define HPAGE_PMD_SHIFT HPAGE_SHIFT
+#define HPAGE_PMD_MASK HPAGE_MASK
+#define HPAGE_PMD_SIZE HPAGE_SIZE
+
+#define transparent_hugepage_enabled(__vma) \
+ (transparent_hugepage_flags & (1<<TRANSPARENT_HUGEPAGE_FLAG) || \
+ (transparent_hugepage_flags & \
+ (1<<TRANSPARENT_HUGEPAGE_REQ_MADV_FLAG) && \
+ (__vma)->vm_flags & VM_HUGEPAGE))
+#define transparent_hugepage_defrag(__vma) \
+ ((transparent_hugepage_flags & \
+ (1<<TRANSPARENT_HUGEPAGE_DEFRAG_FLAG)) || \
+ (transparent_hugepage_flags & \
+ (1<<TRANSPARENT_HUGEPAGE_DEFRAG_REQ_MADV_FLAG) && \
+ (__vma)->vm_flags & VM_HUGEPAGE))
+#ifdef CONFIG_DEBUG_VM
+#define transparent_hugepage_debug_cow() \
+ (transparent_hugepage_flags & \
+ (1<<TRANSPARENT_HUGEPAGE_DEBUG_COW_FLAG))
+#else /* CONFIG_DEBUG_VM */
+#define transparent_hugepage_debug_cow() 0
+#endif /* CONFIG_DEBUG_VM */
+
+extern unsigned long transparent_hugepage_flags;
+extern int copy_pte_range(struct mm_struct *dst_mm, struct mm_struct *src_mm,
+ pmd_t *dst_pmd, pmd_t *src_pmd,
+ struct vm_area_struct *vma,
+ unsigned long addr, unsigned long end);
+extern int handle_pte_fault(struct mm_struct *mm,
+ struct vm_area_struct *vma, unsigned long address,
+ pte_t *pte, pmd_t *pmd, unsigned int flags);
+extern int split_huge_page(struct page *page);
+extern void __split_huge_page_pmd(struct mm_struct *mm, pmd_t *pmd);
+#define split_huge_page_pmd(__mm, __pmd) \
+ do { \
+ pmd_t *____pmd = (__pmd); \
+ if (unlikely(pmd_trans_huge(*____pmd))) \
+ __split_huge_page_pmd(__mm, ____pmd); \
+ } while (0)
+#define wait_split_huge_page(__anon_vma, __pmd) \
+ do { \
+ pmd_t *____pmd = (__pmd); \
+ spin_unlock_wait(&(__anon_vma)->root->lock); \
+ /* \
+ * spin_unlock_wait() is just a loop in C and so the \
+ * CPU can reorder anything around it. \
+ */ \
+ smp_mb(); \
+ BUG_ON(pmd_trans_splitting(*____pmd) || \
+ pmd_trans_huge(*____pmd)); \
+ } while (0)
+#define HPAGE_PMD_ORDER (HPAGE_PMD_SHIFT-PAGE_SHIFT)
+#define HPAGE_PMD_NR (1<<HPAGE_PMD_ORDER)
+#if HPAGE_PMD_ORDER > MAX_ORDER
+#error "hugepages can't be allocated by the buddy allocator"
+#endif
+#else /* CONFIG_TRANSPARENT_HUGEPAGE */
+#define HPAGE_PMD_SHIFT ({ BUG(); 0; })
+#define HPAGE_PMD_MASK ({ BUG(); 0; })
+#define HPAGE_PMD_SIZE ({ BUG(); 0; })
+
+#define transparent_hugepage_enabled(__vma) 0
+
+#define transparent_hugepage_flags 0UL
+static inline int split_huge_page(struct page *page)
+{
+ return 0;
+}
+#define split_huge_page_pmd(__mm, __pmd) \
+ do { } while (0)
+#define wait_split_huge_page(__anon_vma, __pmd) \
+ do { } while (0)
+#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
+
+#endif /* _LINUX_HUGE_MM_H */
diff --git a/include/linux/mm.h b/include/linux/mm.h
index cc6ab1038f6f..78adec4ba9f4 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -111,6 +111,9 @@ extern unsigned int kobjsize(const void *objp);
#define VM_SAO 0x20000000 /* Strong Access Ordering (powerpc) */
#define VM_PFN_AT_MMAP 0x40000000 /* PFNMAP vma that is fully mapped at mmap time */
#define VM_MERGEABLE 0x80000000 /* KSM may merge identical pages */
+#if BITS_PER_LONG > 32
+#define VM_HUGEPAGE 0x100000000UL /* MADV_HUGEPAGE marked this vma */
+#endif
/* Bits set in the VMA until the stack is in its final location */
#define VM_STACK_INCOMPLETE_SETUP (VM_RAND_READ | VM_SEQ_READ)
@@ -243,6 +246,7 @@ struct inode;
* files which need it (119 of them)
*/
#include <linux/page-flags.h>
+#include <linux/huge_mm.h>
/*
* Methods to modify the page usage count.
diff --git a/include/linux/mm_inline.h b/include/linux/mm_inline.h
index 8835b877b8db..650f31eabdb1 100644
--- a/include/linux/mm_inline.h
+++ b/include/linux/mm_inline.h
@@ -20,14 +20,21 @@ static inline int page_is_file_cache(struct page *page)
}
static inline void
-add_page_to_lru_list(struct zone *zone, struct page *page, enum lru_list l)
+__add_page_to_lru_list(struct zone *zone, struct page *page, enum lru_list l,
+ struct list_head *head)
{
- list_add(&page->lru, &zone->lru[l].list);
+ list_add(&page->lru, head);
__inc_zone_state(zone, NR_LRU_BASE + l);
mem_cgroup_add_lru_list(page, l);
}
static inline void
+add_page_to_lru_list(struct zone *zone, struct page *page, enum lru_list l)
+{
+ __add_page_to_lru_list(zone, page, l, &zone->lru[l].list);
+}
+
+static inline void
del_page_from_lru_list(struct zone *zone, struct page *page, enum lru_list l)
{
list_del(&page->lru);
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 907f1605926b..4ca1241ef94e 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -410,11 +410,32 @@ static inline void ClearPageCompound(struct page *page)
#endif /* !PAGEFLAGS_EXTENDED */
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
+/*
+ * PageHuge() only returns true for hugetlbfs pages, but not for
+ * normal or transparent huge pages.
+ *
+ * PageTransHuge() returns true for both transparent huge and
+ * hugetlbfs pages, but not normal pages. PageTransHuge() can only be
+ * called only in the core VM paths where hugetlbfs pages can't exist.
+ */
+static inline int PageTransHuge(struct page *page)
+{
+ VM_BUG_ON(PageTail(page));
+ return PageHead(page);
+}
+
static inline int PageTransCompound(struct page *page)
{
return PageCompound(page);
}
+
#else
+
+static inline int PageTransHuge(struct page *page)
+{
+ return 0;
+}
+
static inline int PageTransCompound(struct page *page)
{
return 0;
diff --git a/include/linux/rmap.h b/include/linux/rmap.h
index bb83c0da2071..e9fd04ca1e51 100644
--- a/include/linux/rmap.h
+++ b/include/linux/rmap.h
@@ -198,6 +198,8 @@ enum ttu_flags {
};
#define TTU_ACTION(x) ((x) & TTU_ACTION_MASK)
+bool is_vma_temporary_stack(struct vm_area_struct *vma);
+
int try_to_unmap(struct page *, enum ttu_flags flags);
int try_to_unmap_one(struct page *, struct vm_area_struct *,
unsigned long address, enum ttu_flags flags);
diff --git a/include/linux/swap.h b/include/linux/swap.h
index eba53e71d2cc..4d559325d919 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -208,6 +208,8 @@ extern unsigned int nr_free_pagecache_pages(void);
/* linux/mm/swap.c */
extern void __lru_cache_add(struct page *, enum lru_list lru);
extern void lru_cache_add_lru(struct page *, enum lru_list lru);
+extern void lru_add_page_tail(struct zone* zone,
+ struct page *page, struct page *page_tail);
extern void activate_page(struct page *);
extern void mark_page_accessed(struct page *);
extern void lru_add_drain(void);
generated by cgit v1.2.3 (git 2.39.0) at 2025-01-02 15:45:37 +0300