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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107/* SPDX-License-Identifier: GPL-2.0 *//* * Copyright (C) 2020-2022 Loongson Technology Corporation Limited */#ifndef _ASM_PGALLOC_H#define _ASM_PGALLOC_H
#include <linux/mm.h>#include <linux/sched.h>
#define __HAVE_ARCH_PMD_ALLOC_ONE#define __HAVE_ARCH_PUD_ALLOC_ONE#define __HAVE_ARCH_PTE_ALLOC_ONE_KERNEL#include <asm-generic/pgalloc.h>
static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte){ set_pmd(pmd, __pmd((unsigned long)pte));}
static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t pte){ set_pmd(pmd, __pmd((unsigned long)page_address(pte)));}
#ifndef __PAGETABLE_PMD_FOLDED
static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd){ set_pud(pud, __pud((unsigned long)pmd));}#endif
#ifndef __PAGETABLE_PUD_FOLDED
static inline void p4d_populate(struct mm_struct *mm, p4d_t *p4d, pud_t *pud){ set_p4d(p4d, __p4d((unsigned long)pud));}
#endif /* __PAGETABLE_PUD_FOLDED */
extern void pagetable_init(void);
extern pgd_t *pgd_alloc(struct mm_struct *mm);
static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm){ pte_t *pte = __pte_alloc_one_kernel(mm);
if (pte) kernel_pte_init(pte);
return pte;}
#define __pte_free_tlb(tlb, pte, address) tlb_remove_ptdesc((tlb), page_ptdesc(pte))
#ifndef __PAGETABLE_PMD_FOLDED
static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address){ pmd_t *pmd; struct ptdesc *ptdesc;
ptdesc = pagetable_alloc(GFP_KERNEL_ACCOUNT, 0); if (!ptdesc) return NULL;
if (!pagetable_pmd_ctor(mm, ptdesc)) { pagetable_free(ptdesc); return NULL; }
pmd = ptdesc_address(ptdesc); pmd_init(pmd); return pmd;}
#define __pmd_free_tlb(tlb, x, addr) tlb_remove_ptdesc((tlb), virt_to_ptdesc(x))
#endif
#ifndef __PAGETABLE_PUD_FOLDED
static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long address){ pud_t *pud; struct ptdesc *ptdesc = pagetable_alloc(GFP_KERNEL, 0);
if (!ptdesc) return NULL; pagetable_pud_ctor(ptdesc); pud = ptdesc_address(ptdesc);
pud_init(pud); return pud;}
#define __pud_free_tlb(tlb, x, addr) tlb_remove_ptdesc((tlb), virt_to_ptdesc(x))
#endif /* __PAGETABLE_PUD_FOLDED */
extern pte_t * __init populate_kernel_pte(unsigned long addr);#endif /* _ASM_PGALLOC_H */