x86: add common mm/pgtable.c

Add a common arch/x86/mm/pgtable.c file for common 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>

1 files changed, 0 insertions, 67 deletions

diff --git a/include/asm-x86/pgalloc_64.h b/include/asm-x86/pgalloc_64.h
index bcf525f3fbd0..23f87501ac26 100644
--- a/include/asm-x86/pgalloc_64.h
+++ b/include/asm-x86/pgalloc_64.h
@@ -1,8 +1,6 @@
 #ifndef _X86_64_PGALLOC_H
 #define _X86_64_PGALLOC_H
 
-#include <linux/threads.h>
-#include <linux/mm.h>
 #include <asm/pda.h>
 
 static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
@@ -49,71 +47,6 @@ static inline void pud_free(struct mm_struct *mm, pud_t *pud)
 	free_page((unsigned long)pud);
 }
 
-static inline void pgd_list_add(pgd_t *pgd)
-{
-	struct page *page = virt_to_page(pgd);
-	unsigned long flags;
-
-	spin_lock_irqsave(&pgd_lock, flags);
-	list_add(&page->lru, &pgd_list);
-	spin_unlock_irqrestore(&pgd_lock, flags);
-}
-
-static inline void pgd_list_del(pgd_t *pgd)
-{
-	struct page *page = virt_to_page(pgd);
-	unsigned long flags;
-
-	spin_lock_irqsave(&pgd_lock, flags);
-	list_del(&page->lru);
-	spin_unlock_irqrestore(&pgd_lock, flags);
-}
-
-static inline pgd_t *pgd_alloc(struct mm_struct *mm)
-{
-	unsigned boundary;
-	pgd_t *pgd = (pgd_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT);
-	if (!pgd)
-		return NULL;
-	pgd_list_add(pgd);
-	/*
-	 * Copy kernel pointers in from init.
-	 * Could keep a freelist or slab cache of those because the kernel
-	 * part never changes.
-	 */
-	boundary = pgd_index(__PAGE_OFFSET);
-	memset(pgd, 0, boundary * sizeof(pgd_t));
-	memcpy(pgd + boundary,
-	       init_level4_pgt + boundary,
-	       (PTRS_PER_PGD - boundary) * sizeof(pgd_t));
-	return pgd;
-}
-
-static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
-{
-	BUG_ON((unsigned long)pgd & (PAGE_SIZE-1));
-	pgd_list_del(pgd);
-	free_page((unsigned long)pgd);
-}
-
-static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
-{
-	return (pte_t *)get_zeroed_page(GFP_KERNEL|__GFP_REPEAT);
-}
-
-static inline pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address)
-{
-	struct page *page;
-	void *p;
-
-	p = (void *)get_zeroed_page(GFP_KERNEL|__GFP_REPEAT);
-	if (!p)
-		return NULL;
-	page = virt_to_page(p);
-	pgtable_page_ctor(page);
-	return page;
-}
-
 /* Should really implement gc for free page table pages. This could be
    done with a reference count in struct page. */