Commit 6b0b50b0 authored by Aneesh Kumar K.V's avatar Aneesh Kumar K.V Committed by Benjamin Herrenschmidt
Browse files

mm/THP: add pmd args to pgtable deposit and withdraw APIs 



This will be later used by powerpc THP support.  In powerpc we want to use
pgtable for storing the hash index values.  So instead of adding them to
mm_context list, we would like to store them in the second half of pmd

Signed-off-by: default avatarAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Reviewed-by: default avatarAndrea Arcangeli <aarcange@redhat.com>
Reviewed-by: default avatarDavid Gibson <david@gibson.dropbear.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent 8663890a

arch/s390/include/asm/pgtable.h

+3 −2
Original line number Diff line number Diff line
@@ -1370,10 +1370,11 @@ static inline pmd_t pmd_mkwrite(pmd_t pmd) 
#ifdef CONFIG_TRANSPARENT_HUGEPAGE



#define __HAVE_ARCH_PGTABLE_DEPOSIT

extern void pgtable_trans_huge_deposit(struct mm_struct *mm, pgtable_t pgtable);

extern void pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp,

				       pgtable_t pgtable);



#define __HAVE_ARCH_PGTABLE_WITHDRAW

extern pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm);

extern pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp);



static inline int pmd_trans_splitting(pmd_t pmd)

{

arch/s390/mm/pgtable.c

+3 −2
Original line number Diff line number Diff line
@@ -1117,7 +1117,8 @@ void pmdp_splitting_flush(struct vm_area_struct *vma, unsigned long address, 
	}

}



void pgtable_trans_huge_deposit(struct mm_struct *mm, pgtable_t pgtable)

void pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp,

				pgtable_t pgtable)

{

	struct list_head *lh = (struct list_head *) pgtable;
@@ -1131,7 +1132,7 @@ void pgtable_trans_huge_deposit(struct mm_struct *mm, pgtable_t pgtable) 
	mm->pmd_huge_pte = pgtable;

}



pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm)

pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp)

{

	struct list_head *lh;

	pgtable_t pgtable;

arch/sparc/include/asm/pgtable_64.h

+3 −2
Original line number Diff line number Diff line
@@ -853,10 +853,11 @@ extern void update_mmu_cache_pmd(struct vm_area_struct *vma, unsigned long addr, 
				 pmd_t *pmd);



#define __HAVE_ARCH_PGTABLE_DEPOSIT

extern void pgtable_trans_huge_deposit(struct mm_struct *mm, pgtable_t pgtable);

extern void pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp,

				       pgtable_t pgtable);



#define __HAVE_ARCH_PGTABLE_WITHDRAW

extern pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm);

extern pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp);

#endif



/* Encode and de-code a swap entry */

arch/sparc/mm/tlb.c

+3 −2
Original line number Diff line number Diff line
@@ -188,7 +188,8 @@ void set_pmd_at(struct mm_struct *mm, unsigned long addr, 
	}

}



void pgtable_trans_huge_deposit(struct mm_struct *mm, pgtable_t pgtable)

void pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp,

				pgtable_t pgtable)

{

	struct list_head *lh = (struct list_head *) pgtable;
@@ -202,7 +203,7 @@ void pgtable_trans_huge_deposit(struct mm_struct *mm, pgtable_t pgtable) 
	mm->pmd_huge_pte = pgtable;

}



pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm)

pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp)

{

	struct list_head *lh;

	pgtable_t pgtable;

include/asm-generic/pgtable.h

+3 −2
Original line number Diff line number Diff line
@@ -173,11 +173,12 @@ extern void pmdp_splitting_flush(struct vm_area_struct *vma, 
#endif



#ifndef __HAVE_ARCH_PGTABLE_DEPOSIT

extern void pgtable_trans_huge_deposit(struct mm_struct *mm, pgtable_t pgtable);

extern void pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp,

				       pgtable_t pgtable);

#endif



#ifndef __HAVE_ARCH_PGTABLE_WITHDRAW

extern pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm);

extern pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp);

#endif



#ifndef __HAVE_ARCH_PMDP_INVALIDATE

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