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, 18 insertions, 0 deletions

diff --git a/include/asm-x86/pgalloc.h b/include/asm-x86/pgalloc.h
index 5886eed05886..ea9d27ad7f4e 100644
--- a/include/asm-x86/pgalloc.h
+++ b/include/asm-x86/pgalloc.h
@@ -1,5 +1,23 @@
+#ifndef _ASM_X86_PGALLOC_H
+#define _ASM_X86_PGALLOC_H
+
+#include <linux/threads.h>
+#include <linux/mm.h>           /* for struct page */
+#include <linux/pagemap.h>
+
+/*
+ * Allocate and free page tables.
+ */
+extern pgd_t *pgd_alloc(struct mm_struct *);
+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);
+
 #ifdef CONFIG_X86_32
 # include "pgalloc_32.h"
 #else
 # include "pgalloc_64.h"
 #endif
+
+#endif  /* _ASM_X86_PGALLOC_H */