[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / asm-m32r / pgalloc.h

#ifndef _ASM_M32R_PGALLOC_H
#define _ASM_M32R_PGALLOC_H

#include <linux/mm.h>

#include <asm/io.h>

#define pmd_populate_kernel(mm, pmd, pte)	\
	set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte)))

static __inline__ void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
	pgtable_t pte)
{
	set_pmd(pmd, __pmd(_PAGE_TABLE + page_to_phys(pte)));
}
#define pmd_pgtable(pmd) pmd_page(pmd)

/*
 * Allocate and free page tables.
 */
static __inline__ pgd_t *pgd_alloc(struct mm_struct *mm)
{
	pgd_t *pgd = (pgd_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO);

	return pgd;
}

static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
	free_page((unsigned long)pgd);
}

static __inline__ pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
	unsigned long address)
{
	pte_t *pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO);

	return pte;
}

static __inline__ pgtable_t pte_alloc_one(struct mm_struct *mm,
	unsigned long address)
{
	struct page *pte = alloc_page(GFP_KERNEL|__GFP_ZERO);

	pgtable_page_ctor(pte);
	return pte;
}

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);
}

#define __pte_free_tlb(tlb, pte)	pte_free((tlb)->mm, (pte))

/*
 * allocating and freeing a pmd is trivial: the 1-entry pmd is
 * inside the pgd, so has no extra memory associated with it.
 * (In the PAE case we free the pmds as part of the pgd.)
 */

#define pmd_alloc_one(mm, addr)		({ BUG(); ((pmd_t *)2); })
#define pmd_free(mm, x)			do { } while (0)
#define __pmd_free_tlb(tlb, x)		do { } while (0)
#define pgd_populate(mm, pmd, pte)	BUG()

#define check_pgt_cache()	do { } while (0)

#endif /* _ASM_M32R_PGALLOC_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef _ASM_M32R_PGALLOC_H
	2	#define _ASM_M32R_PGALLOC_H
	3
1da177e4 LT	4	#include <linux/mm.h>
	5
	6	#include <asm/io.h>
	7
	8	#define pmd_populate_kernel(mm, pmd, pte) \
	9	set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte)))
	10
	11	static __inline__ void pmd_populate(struct mm_struct mm, pmd_t pmd,
2f569afd	12	pgtable_t pte)
1da177e4 LT	13	{
	14	set_pmd(pmd, __pmd(_PAGE_TABLE + page_to_phys(pte)));
	15	}
2f569afd	16	#define pmd_pgtable(pmd) pmd_page(pmd)
1da177e4 LT	17
	18	/*
	19	* Allocate and free page tables.
	20	*/
	21	static __inline__ pgd_t pgd_alloc(struct mm_struct mm)
	22	{
	23	pgd_t pgd = (pgd_t )__get_free_page(GFP_KERNEL\|__GFP_ZERO);
	24
	25	return pgd;
	26	}
	27
5e541973	28	static inline void pgd_free(struct mm_struct mm, pgd_t pgd)
1da177e4 LT	29	{
	30	free_page((unsigned long)pgd);
	31	}
	32
	33	static __inline__ pte_t pte_alloc_one_kernel(struct mm_struct mm,
	34	unsigned long address)
	35	{
	36	pte_t pte = (pte_t )__get_free_page(GFP_KERNEL\|__GFP_ZERO);
	37
	38	return pte;
	39	}
	40
2f569afd	41	static __inline__ pgtable_t pte_alloc_one(struct mm_struct *mm,
1da177e4 LT	42	unsigned long address)
	43	{
	44	struct page *pte = alloc_page(GFP_KERNEL\|__GFP_ZERO);
	45
2f569afd	46	pgtable_page_ctor(pte);
1da177e4 LT	47	return pte;
	48	}
	49
5e541973	50	static inline void pte_free_kernel(struct mm_struct mm, pte_t pte)
1da177e4 LT	51	{
	52	free_page((unsigned long)pte);
	53	}
	54
2f569afd	55	static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
1da177e4	56	{
2f569afd	57	pgtable_page_dtor(pte);
1da177e4 LT	58	__free_page(pte);
	59	}
	60
5e541973	61	#define __pte_free_tlb(tlb, pte) pte_free((tlb)->mm, (pte))
1da177e4 LT	62
	63	/*
	64	* allocating and freeing a pmd is trivial: the 1-entry pmd is
	65	* inside the pgd, so has no extra memory associated with it.
	66	* (In the PAE case we free the pmds as part of the pgd.)
	67	*/
	68
	69	#define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *)2); })
5e541973	70	#define pmd_free(mm, x) do { } while (0)
1da177e4 LT	71	#define __pmd_free_tlb(tlb, x) do { } while (0)
	72	#define pgd_populate(mm, pmd, pte) BUG()
	73
	74	#define check_pgt_cache() do { } while (0)
	75
	76	#endif /* _ASM_M32R_PGALLOC_H */