hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

sparc64: Cleanup hugepage table walk functions 

Flatten out nested code structure in huge_pte_offset()
and huge_pte_alloc().

Signed-off-by: Nitin Gupta <nitin.m.gupta@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nitin Gupta 2017-07-29 11:42:19 -07:00 committed by David S. Miller
parent f10bb00790
commit 7637978474
1 changed files with 20 additions and 34 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

54
arch/sparc/mm/hugetlbpage.c
View File

@ -266,27 +266,19 @@ pte_t *huge_pte_alloc(struct mm_struct *mm,
pgd_t *pgd;
pud_t *pud;
pmd_t *pmd;
pte_t *pte = NULL;
pgd = pgd_offset(mm, addr);
pud = pud_alloc(mm, pgd, addr);
if (!pud)
return NULL;
if (sz >= PUD_SIZE)
pte = (pte_t *)pud;
else {
pmd = pmd_alloc(mm, pud, addr);
if (!pmd)
return NULL;
if (sz >= PMD_SIZE)
pte = (pte_t *)pmd;
else
pte = pte_alloc_map(mm, pmd, addr);
}
return pte;
return (pte_t *)pud;
pmd = pmd_alloc(mm, pud, addr);
if (!pmd)
return NULL;
if (sz >= PMD_SIZE)
return (pte_t *)pmd;
return pte_alloc_map(mm, pmd, addr);
}
pte_t *huge_pte_offset(struct mm_struct *mm,
@ -295,27 +287,21 @@ pte_t *huge_pte_offset(struct mm_struct *mm,
pgd_t *pgd;
pud_t *pud;
pmd_t *pmd;
pte_t *pte = NULL;
pgd = pgd_offset(mm, addr);
if (!pgd_none(*pgd)) {
pud = pud_offset(pgd, addr);
if (!pud_none(*pud)) {
if (is_hugetlb_pud(*pud))
pte = (pte_t *)pud;
else {
pmd = pmd_offset(pud, addr);
if (!pmd_none(*pmd)) {
if (is_hugetlb_pmd(*pmd))
pte = (pte_t *)pmd;
else
pte = pte_offset_map(pmd, addr);
}
}
}
}
return pte;
if (pgd_none(*pgd))
return NULL;
pud = pud_offset(pgd, addr);
if (pud_none(*pud))
return NULL;
if (is_hugetlb_pud(*pud))
return (pte_t *)pud;
pmd = pmd_offset(pud, addr);
if (pmd_none(*pmd))
return NULL;
if (is_hugetlb_pmd(*pmd))
return (pte_t *)pmd;
return pte_offset_map(pmd, addr);
}
void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,