arch/sparc/include/asm/pgalloc_64.h

Source file repositories/reference/linux-study-clean/arch/sparc/include/asm/pgalloc_64.h

File Facts

System
Linux kernel
Corpus path
arch/sparc/include/asm/pgalloc_64.h
Extension
.h
Size
2939 bytes
Lines
119
Domain
Architecture Layer
Bucket
arch/sparc
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef _SPARC64_PGALLOC_H
#define _SPARC64_PGALLOC_H

#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/slab.h>

#include <asm/spitfire.h>
#include <asm/cpudata.h>
#include <asm/cacheflush.h>
#include <asm/page.h>

/* Page table allocation/freeing. */

extern struct kmem_cache *pgtable_cache;

static inline void __p4d_populate(p4d_t *p4d, pud_t *pud)
{
	p4d_set(p4d, pud);
}

#define p4d_populate(MM, P4D, PUD)	__p4d_populate(P4D, PUD)

static inline pgd_t *pgd_alloc(struct mm_struct *mm)
{
	return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
}

static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
	kmem_cache_free(pgtable_cache, pgd);
}

static inline void __pud_populate(pud_t *pud, pmd_t *pmd)
{
	pud_set(pud, pmd);
}

#define pud_populate(MM, PUD, PMD)	__pud_populate(PUD, PMD)

static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
{
	return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
}

static inline void pud_free(struct mm_struct *mm, pud_t *pud)
{
	kmem_cache_free(pgtable_cache, pud);
}

static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
{
	return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
}

static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
{
	kmem_cache_free(pgtable_cache, pmd);
}

pte_t *pte_alloc_one_kernel(struct mm_struct *mm);
pgtable_t pte_alloc_one(struct mm_struct *mm);
void pte_free_kernel(struct mm_struct *mm, pte_t *pte);
void pte_free(struct mm_struct *mm, pgtable_t ptepage);

/* arch use pte_free_defer() implementation in arch/sparc/mm/init_64.c */
#define pte_free_defer pte_free_defer
void pte_free_defer(struct mm_struct *mm, pgtable_t pgtable);

#define pmd_populate_kernel(MM, PMD, PTE)	pmd_set(MM, PMD, PTE)
#define pmd_populate(MM, PMD, PTE)		pmd_set(MM, PMD, PTE)

void pgtable_free(void *table, bool is_page);

#ifdef CONFIG_SMP

struct mmu_gather;
void tlb_remove_table(struct mmu_gather *, void *);

static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page)
{
	unsigned long pgf = (unsigned long)table;
	if (is_page)
		pgf |= 0x1UL;
	tlb_remove_table(tlb, (void *)pgf);
}

static inline void __tlb_remove_table(void *_table)
{

Annotation

Implementation Notes