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x86: move pte functions into common asm/pgalloc.h 

Common definitions for 2-level pagetable functions.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Jeremy Fitzhardinge 2008-03-17 16:36:57 -07:00 committed by Ingo Molnar
parent 1d262d3a49
commit 397f687ab7
6 changed files with 23 additions and 47 deletions
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6
arch/x86/mm/init_64.c
View File

@ -662,12 +662,6 @@ int memory_add_physaddr_to_nid(u64 start)
EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid);
#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));

7
arch/x86/mm/pgtable.c
View File

@ -21,6 +21,13 @@ pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address)
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
static inline void pgd_list_add(pgd_t *pgd)
{

7
arch/x86/mm/pgtable_32.c
View File

@ -173,13 +173,6 @@ void reserve_top_address(unsigned long reserve)
__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)

16
include/asm-x86/pgalloc.h
View File

@ -24,6 +24,22 @@ extern void pgd_free(struct mm_struct *mm, pgd_t *pgd);
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

18
include/asm-x86/pgalloc_32.h
View File

@ -17,24 +17,6 @@ static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page *p
}
#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
/*
* In the PAE case we free the pmds as part of the pgd.

16
include/asm-x86/pgalloc_64.h
View File

@ -47,22 +47,6 @@ static inline void pud_free(struct mm_struct *mm, pud_t *pud)
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);