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authorAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>2016-04-29 23:26:29 +1000
committerMichael Ellerman <mpe@ellerman.id.au>2016-05-11 21:53:57 +1000
commit3df33f12be2f6fa88dff12564ab1d069482e3224 (patch)
tree70a1a974df6f748741a5768a71c305a370812537 /arch/powerpc/include/asm/book3s/64/hash-64k.h
parent6a1ea36260f69f1aea85bbf8afcd6a8c193485b9 (diff)
downloadlinux-3df33f12be2f6fa88dff12564ab1d069482e3224.tar.gz
powerpc/mm/thp: Abstraction for THP functions
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/book3s/64/hash-64k.h')
-rw-r--r--arch/powerpc/include/asm/book3s/64/hash-64k.h23
1 files changed, 18 insertions, 5 deletions
diff --git a/arch/powerpc/include/asm/book3s/64/hash-64k.h b/arch/powerpc/include/asm/book3s/64/hash-64k.h
index 80d2abe25280..5aae4f530c21 100644
--- a/arch/powerpc/include/asm/book3s/64/hash-64k.h
+++ b/arch/powerpc/include/asm/book3s/64/hash-64k.h
@@ -119,11 +119,6 @@ static inline int hash__remap_4k_pfn(struct vm_area_struct *vma, unsigned long a
#define H_PGD_TABLE_SIZE (sizeof(pgd_t) << PGD_INDEX_SIZE)
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
-extern unsigned long pmd_hugepage_update(struct mm_struct *mm,
- unsigned long addr,
- pmd_t *pmdp,
- unsigned long clr,
- unsigned long set);
static inline char *get_hpte_slot_array(pmd_t *pmdp)
{
/*
@@ -193,6 +188,24 @@ static inline int hash__pmd_same(pmd_t pmd_a, pmd_t pmd_b)
return (((pmd_raw(pmd_a) ^ pmd_raw(pmd_b)) & ~cpu_to_be64(_PAGE_HPTEFLAGS)) == 0);
}
+static inline pmd_t hash__pmd_mkhuge(pmd_t pmd)
+{
+ return __pmd(pmd_val(pmd) | (_PAGE_PTE | H_PAGE_THP_HUGE));
+}
+
+extern unsigned long hash__pmd_hugepage_update(struct mm_struct *mm,
+ unsigned long addr, pmd_t *pmdp,
+ unsigned long clr, unsigned long set);
+extern pmd_t hash__pmdp_collapse_flush(struct vm_area_struct *vma,
+ unsigned long address, pmd_t *pmdp);
+extern void hash__pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp,
+ pgtable_t pgtable);
+extern pgtable_t hash__pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp);
+extern void hash__pmdp_huge_split_prepare(struct vm_area_struct *vma,
+ unsigned long address, pmd_t *pmdp);
+extern pmd_t hash__pmdp_huge_get_and_clear(struct mm_struct *mm,
+ unsigned long addr, pmd_t *pmdp);
+extern int hash__has_transparent_hugepage(void);
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
#endif /* __ASSEMBLY__ */