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arm64: hugetlb: Override set_huge_swap_pte_at() to support contiguous hugepages 

The default implementation of set_huge_swap_pte_at() does not support
hugepages consisting of contiguous ptes. Override it to add support for
contiguous hugepages.

Signed-off-by: Punit Agrawal <punit.agrawal@arm.com>
Cc: David Woods <dwoods@mellanox.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Punit Agrawal 2017-08-22 11:42:47 +01:00 committed by Catalin Marinas
parent c3e4ed5c3d
commit a8d623eefd
2 changed files with 15 additions and 0 deletions
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3
arch/arm64/include/asm/hugetlb.h
View File

@ -84,6 +84,9 @@ extern void huge_ptep_clear_flush(struct vm_area_struct *vma,
extern void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, unsigned long sz);
#define huge_pte_clear huge_pte_clear
extern void set_huge_swap_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pte, unsigned long sz);
#define set_huge_swap_pte_at set_huge_swap_pte_at
#include <asm-generic/hugetlb.h>

12
arch/arm64/mm/hugetlbpage.c
View File

@ -188,6 +188,18 @@ void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
}
}
void set_huge_swap_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pte, unsigned long sz)
{
int i, ncontig;
size_t pgsize;
ncontig = num_contig_ptes(sz, &pgsize);
for (i = 0; i < ncontig; i++, ptep++)
set_pte(ptep, pte);
}
pte_t *huge_pte_alloc(struct mm_struct *mm,
unsigned long addr, unsigned long sz)
{