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Subject[PATCH 06 of 31] x86: move pte functions into common asm/pgalloc.h
Date
From
Common definitions for 2-level pagetable functions.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
---
arch/x86/mm/init_64.c | 6 ------
arch/x86/mm/pgtable.c | 7 +++++++
arch/x86/mm/pgtable_32.c | 7 -------
include/asm-x86/pgalloc.h | 16 ++++++++++++++++
include/asm-x86/pgalloc_32.h | 18 ------------------
include/asm-x86/pgalloc_64.h | 16 ----------------
6 files changed, 23 insertions(+), 47 deletions(-)
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -848,12 +848,6 @@
}
#endif

-void __pte_free_tlb(struct mmu_gather *tlb, struct page *pte)
-{
- pgtable_page_dtor(pte);
- tlb_remove_page(tlb, pte);
-}
-
void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd)
{
tlb_remove_page(tlb, virt_to_page(pmd));
diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c
--- a/arch/x86/mm/pgtable.c
+++ b/arch/x86/mm/pgtable.c
@@ -19,6 +19,13 @@
if (pte)
pgtable_page_ctor(pte);
return pte;
+}
+
+void __pte_free_tlb(struct mmu_gather *tlb, struct page *pte)
+{
+ pgtable_page_dtor(pte);
+ paravirt_release_pt(page_to_pfn(pte));
+ tlb_remove_page(tlb, pte);
}

#ifdef CONFIG_X86_64
diff --git a/arch/x86/mm/pgtable_32.c b/arch/x86/mm/pgtable_32.c
--- a/arch/x86/mm/pgtable_32.c
+++ b/arch/x86/mm/pgtable_32.c
@@ -173,13 +173,6 @@
__VMALLOC_RESERVE += reserve;
}

-void __pte_free_tlb(struct mmu_gather *tlb, struct page *pte)
-{
- pgtable_page_dtor(pte);
- paravirt_release_pt(page_to_pfn(pte));
- tlb_remove_page(tlb, pte);
-}
-
#ifdef CONFIG_X86_PAE

void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd)
diff --git a/include/asm-x86/pgalloc.h b/include/asm-x86/pgalloc.h
--- a/include/asm-x86/pgalloc.h
+++ b/include/asm-x86/pgalloc.h
@@ -24,6 +24,22 @@
extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long);
extern pgtable_t pte_alloc_one(struct mm_struct *, unsigned long);

+/* Should really implement gc for free page table pages. This could be
+ done with a reference count in struct page. */
+
+static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
+{
+ BUG_ON((unsigned long)pte & (PAGE_SIZE-1));
+ free_page((unsigned long)pte);
+}
+
+static inline void pte_free(struct mm_struct *mm, struct page *pte)
+{
+ __free_page(pte);
+}
+
+extern void __pte_free_tlb(struct mmu_gather *tlb, struct page *pte);
+
#ifdef CONFIG_X86_32
# include "pgalloc_32.h"
#else
diff --git a/include/asm-x86/pgalloc_32.h b/include/asm-x86/pgalloc_32.h
--- a/include/asm-x86/pgalloc_32.h
+++ b/include/asm-x86/pgalloc_32.h
@@ -16,24 +16,6 @@
set_pmd(pmd, __pmd(((pteval_t)pfn << PAGE_SHIFT) | _PAGE_TABLE));
}
#define pmd_pgtable(pmd) pmd_page(pmd)
-
-/*
- * Allocate and free page tables.
- */
-
-static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
-{
- free_page((unsigned long)pte);
-}
-
-static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
-{
- pgtable_page_dtor(pte);
- __free_page(pte);
-}
-
-
-extern void __pte_free_tlb(struct mmu_gather *tlb, struct page *pte);

#ifdef CONFIG_X86_PAE
/*
diff --git a/include/asm-x86/pgalloc_64.h b/include/asm-x86/pgalloc_64.h
--- a/include/asm-x86/pgalloc_64.h
+++ b/include/asm-x86/pgalloc_64.h
@@ -47,22 +47,6 @@
free_page((unsigned long)pud);
}

-/* Should really implement gc for free page table pages. This could be
- done with a reference count in struct page. */
-
-static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
-{
- BUG_ON((unsigned long)pte & (PAGE_SIZE-1));
- free_page((unsigned long)pte);
-}
-
-static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
-{
- pgtable_page_dtor(pte);
- __free_page(pte);
-}
-
-extern void __pte_free_tlb(struct mmu_gather *tlb, struct page *pte);
extern void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd);
extern void __pud_free_tlb(struct mmu_gather *tlb, pud_t *pud);




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