Contributors: 9
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Matthew Wilcox |
133 |
40.43% |
4 |
19.05% |
| Linus Torvalds (pre-git) |
86 |
26.14% |
5 |
23.81% |
| Mike Rapoport |
48 |
14.59% |
6 |
28.57% |
| Helge Deller |
41 |
12.46% |
1 |
4.76% |
| Benjamin Herrenschmidt |
15 |
4.56% |
1 |
4.76% |
| Linus Torvalds |
2 |
0.61% |
1 |
4.76% |
| Mikulas Patocka |
2 |
0.61% |
1 |
4.76% |
| Kirill A. Shutemov |
1 |
0.30% |
1 |
4.76% |
| Greg Kroah-Hartman |
1 |
0.30% |
1 |
4.76% |
| Total |
329 |
|
21 |
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_PGALLOC_H
#define _ASM_PGALLOC_H
#include <linux/gfp.h>
#include <linux/mm.h>
#include <linux/threads.h>
#include <asm/processor.h>
#include <asm/fixmap.h>
#include <asm/cache.h>
#define __HAVE_ARCH_PMD_ALLOC_ONE
#define __HAVE_ARCH_PMD_FREE
#define __HAVE_ARCH_PGD_FREE
#include <asm-generic/pgalloc.h>
/* Allocate the top level pgd (page directory) */
static inline pgd_t *pgd_alloc(struct mm_struct *mm)
{
pgd_t *pgd;
pgd = (pgd_t *) __get_free_pages(GFP_KERNEL, PGD_TABLE_ORDER);
if (unlikely(pgd == NULL))
return NULL;
memset(pgd, 0, PAGE_SIZE << PGD_TABLE_ORDER);
return pgd;
}
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
free_pages((unsigned long)pgd, PGD_TABLE_ORDER);
}
#if CONFIG_PGTABLE_LEVELS == 3
/* Three Level Page Table Support for pmd's */
static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
{
set_pud(pud, __pud((PxD_FLAG_PRESENT | PxD_FLAG_VALID) +
(__u32)(__pa((unsigned long)pmd) >> PxD_VALUE_SHIFT)));
}
static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
{
pmd_t *pmd;
pmd = (pmd_t *)__get_free_pages(GFP_PGTABLE_KERNEL, PMD_TABLE_ORDER);
if (likely(pmd))
memset ((void *)pmd, 0, PAGE_SIZE << PMD_TABLE_ORDER);
return pmd;
}
static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
{
free_pages((unsigned long)pmd, PMD_TABLE_ORDER);
}
#endif
static inline void
pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
{
set_pmd(pmd, __pmd((PxD_FLAG_PRESENT | PxD_FLAG_VALID)
+ (__u32)(__pa((unsigned long)pte) >> PxD_VALUE_SHIFT)));
}
#define pmd_populate(mm, pmd, pte_page) \
pmd_populate_kernel(mm, pmd, page_address(pte_page))
#endif