mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
67 lines
1.4 KiB
67 lines
1.4 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
|
/* |
|
* include/asm-xtensa/pgalloc.h |
|
* |
|
* Copyright (C) 2001-2007 Tensilica Inc. |
|
*/ |
|
|
|
#ifndef _XTENSA_PGALLOC_H |
|
#define _XTENSA_PGALLOC_H |
|
|
|
#ifdef CONFIG_MMU |
|
#include <linux/highmem.h> |
|
#include <linux/slab.h> |
|
|
|
#define __HAVE_ARCH_PTE_ALLOC_ONE_KERNEL |
|
#define __HAVE_ARCH_PTE_ALLOC_ONE |
|
#include <asm-generic/pgalloc.h> |
|
|
|
/* |
|
* Allocating and freeing a pmd is trivial: the 1-entry pmd is |
|
* inside the pgd, so has no extra memory associated with it. |
|
*/ |
|
|
|
#define pmd_populate_kernel(mm, pmdp, ptep) \ |
|
(pmd_val(*(pmdp)) = ((unsigned long)ptep)) |
|
#define pmd_populate(mm, pmdp, page) \ |
|
(pmd_val(*(pmdp)) = ((unsigned long)page_to_virt(page))) |
|
|
|
static inline pgd_t* |
|
pgd_alloc(struct mm_struct *mm) |
|
{ |
|
return (pgd_t*) __get_free_pages(GFP_KERNEL | __GFP_ZERO, PGD_ORDER); |
|
} |
|
|
|
static inline void ptes_clear(pte_t *ptep) |
|
{ |
|
int i; |
|
|
|
for (i = 0; i < PTRS_PER_PTE; i++) |
|
pte_clear(NULL, 0, ptep + i); |
|
} |
|
|
|
static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm) |
|
{ |
|
pte_t *ptep; |
|
|
|
ptep = (pte_t *)__pte_alloc_one_kernel(mm); |
|
if (!ptep) |
|
return NULL; |
|
ptes_clear(ptep); |
|
return ptep; |
|
} |
|
|
|
static inline pgtable_t pte_alloc_one(struct mm_struct *mm) |
|
{ |
|
struct page *page; |
|
|
|
page = __pte_alloc_one(mm, GFP_PGTABLE_USER); |
|
if (!page) |
|
return NULL; |
|
ptes_clear(page_address(page)); |
|
return page; |
|
} |
|
|
|
#endif /* CONFIG_MMU */ |
|
|
|
#endif /* _XTENSA_PGALLOC_H */
|
|
|