9a733dc4fb
Add hugetlb definitions if THP enabled. ARC doesn't support HugeTLB FS but it supports THP. Some kernel code such as pagemap uses hugetlb definitions with THP. This patch fixes ARC build issue (HPAGE_SIZE undeclared error) with TRANSPARENT_HUGEPAGE enabled. Signed-off-by: Pavel Kozlov <pavel.kozlov@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@kernel.org>
74 lines
2.1 KiB
C
74 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Copyright (C) 2013-15 Synopsys, Inc. (www.synopsys.com)
|
|
*/
|
|
|
|
|
|
#ifndef _ASM_ARC_HUGEPAGE_H
|
|
#define _ASM_ARC_HUGEPAGE_H
|
|
|
|
#include <linux/types.h>
|
|
#include <asm-generic/pgtable-nopmd.h>
|
|
|
|
/*
|
|
* Hugetlb definitions.
|
|
*/
|
|
#define HPAGE_SHIFT PMD_SHIFT
|
|
#define HPAGE_SIZE (_AC(1, UL) << HPAGE_SHIFT)
|
|
#define HPAGE_MASK (~(HPAGE_SIZE - 1))
|
|
|
|
static inline pte_t pmd_pte(pmd_t pmd)
|
|
{
|
|
return __pte(pmd_val(pmd));
|
|
}
|
|
|
|
static inline pmd_t pte_pmd(pte_t pte)
|
|
{
|
|
return __pmd(pte_val(pte));
|
|
}
|
|
|
|
#define pmd_wrprotect(pmd) pte_pmd(pte_wrprotect(pmd_pte(pmd)))
|
|
#define pmd_mkwrite_novma(pmd) pte_pmd(pte_mkwrite_novma(pmd_pte(pmd)))
|
|
#define pmd_mkdirty(pmd) pte_pmd(pte_mkdirty(pmd_pte(pmd)))
|
|
#define pmd_mkold(pmd) pte_pmd(pte_mkold(pmd_pte(pmd)))
|
|
#define pmd_mkyoung(pmd) pte_pmd(pte_mkyoung(pmd_pte(pmd)))
|
|
#define pmd_mkhuge(pmd) pte_pmd(pte_mkhuge(pmd_pte(pmd)))
|
|
#define pmd_mkinvalid(pmd) pte_pmd(pte_mknotpresent(pmd_pte(pmd)))
|
|
#define pmd_mkclean(pmd) pte_pmd(pte_mkclean(pmd_pte(pmd)))
|
|
|
|
#define pmd_write(pmd) pte_write(pmd_pte(pmd))
|
|
#define pmd_young(pmd) pte_young(pmd_pte(pmd))
|
|
#define pmd_dirty(pmd) pte_dirty(pmd_pte(pmd))
|
|
|
|
#define mk_pmd(page, prot) pte_pmd(mk_pte(page, prot))
|
|
|
|
#define pmd_trans_huge(pmd) (pmd_val(pmd) & _PAGE_HW_SZ)
|
|
|
|
#define pfn_pmd(pfn, prot) (__pmd(((pfn) << PAGE_SHIFT) | pgprot_val(prot)))
|
|
|
|
static inline pmd_t pmd_modify(pmd_t pmd, pgprot_t newprot)
|
|
{
|
|
/*
|
|
* open-coded pte_modify() with additional retaining of HW_SZ bit
|
|
* so that pmd_trans_huge() remains true for this PMD
|
|
*/
|
|
return __pmd((pmd_val(pmd) & (_PAGE_CHG_MASK | _PAGE_HW_SZ)) | pgprot_val(newprot));
|
|
}
|
|
|
|
static inline void set_pmd_at(struct mm_struct *mm, unsigned long addr,
|
|
pmd_t *pmdp, pmd_t pmd)
|
|
{
|
|
*pmdp = pmd;
|
|
}
|
|
|
|
extern void update_mmu_cache_pmd(struct vm_area_struct *vma, unsigned long addr,
|
|
pmd_t *pmd);
|
|
|
|
#define __HAVE_ARCH_FLUSH_PMD_TLB_RANGE
|
|
extern void flush_pmd_tlb_range(struct vm_area_struct *vma, unsigned long start,
|
|
unsigned long end);
|
|
|
|
/* We don't have hardware dirty/accessed bits, generic_pmdp_establish is fine.*/
|
|
#define pmdp_establish generic_pmdp_establish
|
|
|
|
#endif
|