/*
* MIPS Huge TLB Page Support for Kernel .
*
* This file is subject to the terms and conditions of the GNU General Public
* License . See the file " COPYING " in the main directory of this archive
* for more details .
*
* Copyright ( C ) 2002 , Rohit Seth < rohit . seth @ intel . com >
* Copyright 2005 , Embedded Alley Solutions , Inc .
* Matt Porter < mporter @ embeddedalley . com >
* Copyright ( C ) 2008 , 2009 Cavium Networks , Inc .
*/
#include <linux/fs.h>
#include <linux/mm.h>
#include <linux/hugetlb.h>
#include <linux/pagemap.h>
#include <linux/err.h>
#include <linux/sysctl.h>
#include <asm /mman.h>
#include <asm /tlb.h>
#include <asm /tlbflush.h>
pte_t *huge_pte_alloc(struct mm_struct *mm, struct vm_area_struct *vma,
unsigned long addr, unsigned long sz)
{
pgd_t *pgd;
p4d_t *p4d;
pud_t *pud;
pte_t *pte = NULL;
pgd = pgd_offset(mm, addr);
p4d = p4d_alloc(mm, pgd, addr);
pud = pud_alloc(mm, p4d, addr);
if (pud)
pte = (pte_t *)pmd_alloc(mm, pud, addr);
return pte;
}
pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr,
unsigned long sz)
{
pgd_t *pgd;
p4d_t *p4d;
pud_t *pud;
pmd_t *pmd = NULL;
pgd = pgd_offset(mm, addr);
if (pgd_present(*pgd)) {
p4d = p4d_offset(pgd, addr);
if (p4d_present(*p4d)) {
pud = pud_offset(p4d, addr);
if (pud_present(*pud))
pmd = pmd_offset(pud, addr);
}
}
return (pte_t *) pmd;
}
Messung V0.5 in Prozent C=99 H=70 G=85
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(vorverarbeitet am 2026-09-29)
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