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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: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Reviewed-by: Andrea Arcangeli <aarcange@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Aneesh Kumar K.V 2013-06-05 17:14:02 -07:00 коммит произвёл Benjamin Herrenschmidt
Родитель 8663890a9e
Коммит 6b0b50b061
7 изменённых файлов: 27 добавлений и 21 удалений
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5
arch/s390/include/asm/pgtable.h
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@ -1370,10 +1370,11 @@ static inline pmd_t pmd_mkwrite(pmd_t pmd)
#ifdef CONFIG_TRANSPARENT_HUGEPAGE #ifdef CONFIG_TRANSPARENT_HUGEPAGE
#define __HAVE_ARCH_PGTABLE_DEPOSIT #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 #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) static inline int pmd_trans_splitting(pmd_t pmd)
{ {

5
arch/s390/mm/pgtable.c
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@ -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; 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; 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; struct list_head *lh;
pgtable_t pgtable; pgtable_t pgtable;

5
arch/sparc/include/asm/pgtable_64.h
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@ -853,10 +853,11 @@ extern void update_mmu_cache_pmd(struct vm_area_struct *vma, unsigned long addr,
pmd_t *pmd); pmd_t *pmd);
#define __HAVE_ARCH_PGTABLE_DEPOSIT #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 #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 #endif
/* Encode and de-code a swap entry */ /* Encode and de-code a swap entry */

5
arch/sparc/mm/tlb.c
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@ -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; 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; 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; struct list_head *lh;
pgtable_t pgtable; pgtable_t pgtable;

5
include/asm-generic/pgtable.h
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@ -173,11 +173,12 @@ extern void pmdp_splitting_flush(struct vm_area_struct *vma,
#endif #endif
#ifndef __HAVE_ARCH_PGTABLE_DEPOSIT #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 #endif
#ifndef __HAVE_ARCH_PGTABLE_WITHDRAW #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 #endif
#ifndef __HAVE_ARCH_PMDP_INVALIDATE #ifndef __HAVE_ARCH_PMDP_INVALIDATE

18
mm/huge_memory.c
Просмотреть файл

@ -730,7 +730,7 @@ static int __do_huge_pmd_anonymous_page(struct mm_struct *mm,
entry = mk_huge_pmd(page, vma); entry = mk_huge_pmd(page, vma);
page_add_new_anon_rmap(page, vma, haddr); page_add_new_anon_rmap(page, vma, haddr);
set_pmd_at(mm, haddr, pmd, entry); set_pmd_at(mm, haddr, pmd, entry);
pgtable_trans_huge_deposit(mm, pgtable); pgtable_trans_huge_deposit(mm, pmd, pgtable);
add_mm_counter(mm, MM_ANONPAGES, HPAGE_PMD_NR); add_mm_counter(mm, MM_ANONPAGES, HPAGE_PMD_NR);
mm->nr_ptes++; mm->nr_ptes++;
spin_unlock(&mm->page_table_lock); spin_unlock(&mm->page_table_lock);
@ -772,7 +772,7 @@ static bool set_huge_zero_page(pgtable_t pgtable, struct mm_struct *mm,
entry = pmd_wrprotect(entry); entry = pmd_wrprotect(entry);
entry = pmd_mkhuge(entry); entry = pmd_mkhuge(entry);
set_pmd_at(mm, haddr, pmd, entry); set_pmd_at(mm, haddr, pmd, entry);
pgtable_trans_huge_deposit(mm, pgtable); pgtable_trans_huge_deposit(mm, pmd, pgtable);
mm->nr_ptes++; mm->nr_ptes++;
return true; return true;
} }
@ -917,7 +917,7 @@ int copy_huge_pmd(struct mm_struct *dst_mm, struct mm_struct *src_mm,
pmdp_set_wrprotect(src_mm, addr, src_pmd); pmdp_set_wrprotect(src_mm, addr, src_pmd);
pmd = pmd_mkold(pmd_wrprotect(pmd)); pmd = pmd_mkold(pmd_wrprotect(pmd));
set_pmd_at(dst_mm, addr, dst_pmd, pmd); set_pmd_at(dst_mm, addr, dst_pmd, pmd);
pgtable_trans_huge_deposit(dst_mm, pgtable); pgtable_trans_huge_deposit(dst_mm, dst_pmd, pgtable);
dst_mm->nr_ptes++; dst_mm->nr_ptes++;
ret = 0; ret = 0;
@ -987,7 +987,7 @@ static int do_huge_pmd_wp_zero_page_fallback(struct mm_struct *mm,
pmdp_clear_flush(vma, haddr, pmd); pmdp_clear_flush(vma, haddr, pmd);
/* leave pmd empty until pte is filled */ /* leave pmd empty until pte is filled */
pgtable = pgtable_trans_huge_withdraw(mm); pgtable = pgtable_trans_huge_withdraw(mm, pmd);
pmd_populate(mm, &_pmd, pgtable); pmd_populate(mm, &_pmd, pgtable);
for (i = 0; i < HPAGE_PMD_NR; i++, haddr += PAGE_SIZE) { for (i = 0; i < HPAGE_PMD_NR; i++, haddr += PAGE_SIZE) {
@ -1085,7 +1085,7 @@ static int do_huge_pmd_wp_page_fallback(struct mm_struct *mm,
pmdp_clear_flush(vma, haddr, pmd); pmdp_clear_flush(vma, haddr, pmd);
/* leave pmd empty until pte is filled */ /* leave pmd empty until pte is filled */
pgtable = pgtable_trans_huge_withdraw(mm); pgtable = pgtable_trans_huge_withdraw(mm, pmd);
pmd_populate(mm, &_pmd, pgtable); pmd_populate(mm, &_pmd, pgtable);
for (i = 0; i < HPAGE_PMD_NR; i++, haddr += PAGE_SIZE) { for (i = 0; i < HPAGE_PMD_NR; i++, haddr += PAGE_SIZE) {
@ -1360,7 +1360,7 @@ int zap_huge_pmd(struct mmu_gather *tlb, struct vm_area_struct *vma,
struct page *page; struct page *page;
pgtable_t pgtable; pgtable_t pgtable;
pmd_t orig_pmd; pmd_t orig_pmd;
pgtable = pgtable_trans_huge_withdraw(tlb->mm); pgtable = pgtable_trans_huge_withdraw(tlb->mm, pmd);
orig_pmd = pmdp_get_and_clear(tlb->mm, addr, pmd); orig_pmd = pmdp_get_and_clear(tlb->mm, addr, pmd);
tlb_remove_pmd_tlb_entry(tlb, pmd, addr); tlb_remove_pmd_tlb_entry(tlb, pmd, addr);
if (is_huge_zero_pmd(orig_pmd)) { if (is_huge_zero_pmd(orig_pmd)) {
@ -1693,7 +1693,7 @@ static int __split_huge_page_map(struct page *page,
pmd = page_check_address_pmd(page, mm, address, pmd = page_check_address_pmd(page, mm, address,
PAGE_CHECK_ADDRESS_PMD_SPLITTING_FLAG); PAGE_CHECK_ADDRESS_PMD_SPLITTING_FLAG);
if (pmd) { if (pmd) {
pgtable = pgtable_trans_huge_withdraw(mm); pgtable = pgtable_trans_huge_withdraw(mm, pmd);
pmd_populate(mm, &_pmd, pgtable); pmd_populate(mm, &_pmd, pgtable);
haddr = address; haddr = address;
@ -2363,7 +2363,7 @@ static void collapse_huge_page(struct mm_struct *mm,
page_add_new_anon_rmap(new_page, vma, address); page_add_new_anon_rmap(new_page, vma, address);
set_pmd_at(mm, address, pmd, _pmd); set_pmd_at(mm, address, pmd, _pmd);
update_mmu_cache_pmd(vma, address, pmd); update_mmu_cache_pmd(vma, address, pmd);
pgtable_trans_huge_deposit(mm, pgtable); pgtable_trans_huge_deposit(mm, pmd, pgtable);
spin_unlock(&mm->page_table_lock); spin_unlock(&mm->page_table_lock);
*hpage = NULL; *hpage = NULL;
@ -2669,7 +2669,7 @@ static void __split_huge_zero_page_pmd(struct vm_area_struct *vma,
pmdp_clear_flush(vma, haddr, pmd); pmdp_clear_flush(vma, haddr, pmd);
/* leave pmd empty until pte is filled */ /* leave pmd empty until pte is filled */
pgtable = pgtable_trans_huge_withdraw(mm); pgtable = pgtable_trans_huge_withdraw(mm, pmd);
pmd_populate(mm, &_pmd, pgtable); pmd_populate(mm, &_pmd, pgtable);
for (i = 0; i < HPAGE_PMD_NR; i++, haddr += PAGE_SIZE) { for (i = 0; i < HPAGE_PMD_NR; i++, haddr += PAGE_SIZE) {

5
mm/pgtable-generic.c
Просмотреть файл

@ -124,7 +124,8 @@ void pmdp_splitting_flush(struct vm_area_struct *vma, unsigned long address,
#ifndef __HAVE_ARCH_PGTABLE_DEPOSIT #ifndef __HAVE_ARCH_PGTABLE_DEPOSIT
#ifdef CONFIG_TRANSPARENT_HUGEPAGE #ifdef CONFIG_TRANSPARENT_HUGEPAGE
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)
{ {
assert_spin_locked(&mm->page_table_lock); assert_spin_locked(&mm->page_table_lock);
@ -141,7 +142,7 @@ void pgtable_trans_huge_deposit(struct mm_struct *mm, pgtable_t pgtable)
#ifndef __HAVE_ARCH_PGTABLE_WITHDRAW #ifndef __HAVE_ARCH_PGTABLE_WITHDRAW
#ifdef CONFIG_TRANSPARENT_HUGEPAGE #ifdef CONFIG_TRANSPARENT_HUGEPAGE
/* no "address" argument so destroys page coloring of some arch */ /* no "address" argument so destroys page coloring of some arch */
pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm) pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp)
{ {
pgtable_t pgtable; pgtable_t pgtable;