Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 087fd5f..53fc34f 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -16,29 +16,11 @@
struct mmu_gather;
#ifndef is_hugepd
-/*
- * Some architectures requires a hugepage directory format that is
- * required to support multiple hugepage sizes. For example
- * a4fe3ce76 "powerpc/mm: Allow more flexible layouts for hugepage pagetables"
- * introduced the same on powerpc. This allows for a more flexible hugepage
- * pagetable layout.
- */
typedef struct { unsigned long pd; } hugepd_t;
#define is_hugepd(hugepd) (0)
#define __hugepd(x) ((hugepd_t) { (x) })
-static inline int gup_huge_pd(hugepd_t hugepd, unsigned long addr,
- unsigned pdshift, unsigned long end,
- int write, struct page **pages, int *nr)
-{
- return 0;
-}
-#else
-extern int gup_huge_pd(hugepd_t hugepd, unsigned long addr,
- unsigned pdshift, unsigned long end,
- int write, struct page **pages, int *nr);
#endif
-
#ifdef CONFIG_HUGETLB_PAGE
#include <linux/mempolicy.h>
@@ -123,9 +105,7 @@
void free_huge_page(struct page *page);
void hugetlb_fix_reserve_counts(struct inode *inode);
extern struct mutex *hugetlb_fault_mutex_table;
-u32 hugetlb_fault_mutex_hash(struct hstate *h, struct mm_struct *mm,
- struct vm_area_struct *vma,
- struct address_space *mapping,
+u32 hugetlb_fault_mutex_hash(struct hstate *h, struct address_space *mapping,
pgoff_t idx, unsigned long address);
pte_t *huge_pmd_share(struct mm_struct *mm, unsigned long addr, pud_t *pud);
@@ -203,7 +183,6 @@
#define pud_huge(x) 0
#define is_hugepage_only_range(mm, addr, len) 0
#define hugetlb_free_pgd_range(tlb, addr, end, floor, ceiling) ({BUG(); 0; })
-#define hugetlb_fault(mm, vma, addr, flags) ({ BUG(); 0; })
#define hugetlb_mcopy_atomic_pte(dst_mm, dst_pte, dst_vma, dst_addr, \
src_addr, pagep) ({ BUG(); 0; })
#define huge_pte_offset(mm, address, sz) 0
@@ -234,6 +213,13 @@
{
BUG();
}
+static inline vm_fault_t hugetlb_fault(struct mm_struct *mm,
+ struct vm_area_struct *vma, unsigned long address,
+ unsigned int flags)
+{
+ BUG();
+ return 0;
+}
#endif /* !CONFIG_HUGETLB_PAGE */
/*
@@ -371,6 +357,8 @@
nodemask_t *nmask);
struct page *alloc_huge_page_vma(struct hstate *h, struct vm_area_struct *vma,
unsigned long address);
+struct page *alloc_migrate_huge_page(struct hstate *h, gfp_t gfp_mask,
+ int nid, nodemask_t *nmask);
int huge_add_to_page_cache(struct page *page, struct address_space *mapping,
pgoff_t idx);
@@ -466,7 +454,7 @@
static inline struct hstate *page_hstate(struct page *page)
{
VM_BUG_ON_PAGE(!PageHuge(page), page);
- return size_to_hstate(PAGE_SIZE << compound_order(page));
+ return size_to_hstate(page_size(page));
}
static inline unsigned hstate_index_to_shift(unsigned index)
@@ -493,17 +481,54 @@
extern int dissolve_free_huge_page(struct page *page);
extern int dissolve_free_huge_pages(unsigned long start_pfn,
unsigned long end_pfn);
-static inline bool hugepage_migration_supported(struct hstate *h)
-{
+
#ifdef CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION
+#ifndef arch_hugetlb_migration_supported
+static inline bool arch_hugetlb_migration_supported(struct hstate *h)
+{
if ((huge_page_shift(h) == PMD_SHIFT) ||
- (huge_page_shift(h) == PGDIR_SHIFT))
+ (huge_page_shift(h) == PUD_SHIFT) ||
+ (huge_page_shift(h) == PGDIR_SHIFT))
return true;
else
return false;
-#else
- return false;
+}
#endif
+#else
+static inline bool arch_hugetlb_migration_supported(struct hstate *h)
+{
+ return false;
+}
+#endif
+
+static inline bool hugepage_migration_supported(struct hstate *h)
+{
+ return arch_hugetlb_migration_supported(h);
+}
+
+/*
+ * Movability check is different as compared to migration check.
+ * It determines whether or not a huge page should be placed on
+ * movable zone or not. Movability of any huge page should be
+ * required only if huge page size is supported for migration.
+ * There wont be any reason for the huge page to be movable if
+ * it is not migratable to start with. Also the size of the huge
+ * page should be large enough to be placed under a movable zone
+ * and still feasible enough to be migratable. Just the presence
+ * in movable zone does not make the migration feasible.
+ *
+ * So even though large huge page sizes like the gigantic ones
+ * are migratable they should not be movable because its not
+ * feasible to migrate them from movable zone.
+ */
+static inline bool hugepage_movable_supported(struct hstate *h)
+{
+ if (!hugepage_migration_supported(h))
+ return false;
+
+ if (hstate_is_gigantic(h))
+ return false;
+ return true;
}
static inline spinlock_t *huge_pte_lockptr(struct hstate *h,
@@ -543,24 +568,114 @@
set_huge_pte_at(mm, addr, ptep, pte);
}
#endif
+
+#ifndef huge_ptep_modify_prot_start
+#define huge_ptep_modify_prot_start huge_ptep_modify_prot_start
+static inline pte_t huge_ptep_modify_prot_start(struct vm_area_struct *vma,
+ unsigned long addr, pte_t *ptep)
+{
+ return huge_ptep_get_and_clear(vma->vm_mm, addr, ptep);
+}
+#endif
+
+#ifndef huge_ptep_modify_prot_commit
+#define huge_ptep_modify_prot_commit huge_ptep_modify_prot_commit
+static inline void huge_ptep_modify_prot_commit(struct vm_area_struct *vma,
+ unsigned long addr, pte_t *ptep,
+ pte_t old_pte, pte_t pte)
+{
+ set_huge_pte_at(vma->vm_mm, addr, ptep, pte);
+}
+#endif
+
#else /* CONFIG_HUGETLB_PAGE */
struct hstate {};
-#define alloc_huge_page(v, a, r) NULL
-#define alloc_huge_page_node(h, nid) NULL
-#define alloc_huge_page_nodemask(h, preferred_nid, nmask) NULL
-#define alloc_huge_page_vma(h, vma, address) NULL
-#define alloc_bootmem_huge_page(h) NULL
-#define hstate_file(f) NULL
-#define hstate_sizelog(s) NULL
-#define hstate_vma(v) NULL
-#define hstate_inode(i) NULL
-#define page_hstate(page) NULL
-#define huge_page_size(h) PAGE_SIZE
-#define huge_page_mask(h) PAGE_MASK
-#define vma_kernel_pagesize(v) PAGE_SIZE
-#define vma_mmu_pagesize(v) PAGE_SIZE
-#define huge_page_order(h) 0
-#define huge_page_shift(h) PAGE_SHIFT
+
+static inline struct page *alloc_huge_page(struct vm_area_struct *vma,
+ unsigned long addr,
+ int avoid_reserve)
+{
+ return NULL;
+}
+
+static inline struct page *alloc_huge_page_node(struct hstate *h, int nid)
+{
+ return NULL;
+}
+
+static inline struct page *
+alloc_huge_page_nodemask(struct hstate *h, int preferred_nid, nodemask_t *nmask)
+{
+ return NULL;
+}
+
+static inline struct page *alloc_huge_page_vma(struct hstate *h,
+ struct vm_area_struct *vma,
+ unsigned long address)
+{
+ return NULL;
+}
+
+static inline int __alloc_bootmem_huge_page(struct hstate *h)
+{
+ return 0;
+}
+
+static inline struct hstate *hstate_file(struct file *f)
+{
+ return NULL;
+}
+
+static inline struct hstate *hstate_sizelog(int page_size_log)
+{
+ return NULL;
+}
+
+static inline struct hstate *hstate_vma(struct vm_area_struct *vma)
+{
+ return NULL;
+}
+
+static inline struct hstate *hstate_inode(struct inode *i)
+{
+ return NULL;
+}
+
+static inline struct hstate *page_hstate(struct page *page)
+{
+ return NULL;
+}
+
+static inline unsigned long huge_page_size(struct hstate *h)
+{
+ return PAGE_SIZE;
+}
+
+static inline unsigned long huge_page_mask(struct hstate *h)
+{
+ return PAGE_MASK;
+}
+
+static inline unsigned long vma_kernel_pagesize(struct vm_area_struct *vma)
+{
+ return PAGE_SIZE;
+}
+
+static inline unsigned long vma_mmu_pagesize(struct vm_area_struct *vma)
+{
+ return PAGE_SIZE;
+}
+
+static inline unsigned int huge_page_order(struct hstate *h)
+{
+ return 0;
+}
+
+static inline unsigned int huge_page_shift(struct hstate *h)
+{
+ return PAGE_SHIFT;
+}
+
static inline bool hstate_is_gigantic(struct hstate *h)
{
return false;
@@ -602,6 +717,11 @@
return false;
}
+static inline bool hugepage_movable_supported(struct hstate *h)
+{
+ return false;
+}
+
static inline spinlock_t *huge_pte_lockptr(struct hstate *h,
struct mm_struct *mm, pte_t *pte)
{