Release 4.7 mm/pgtable-generic.c
/*
* mm/pgtable-generic.c
*
* Generic pgtable methods declared in asm-generic/pgtable.h
*
* Copyright (C) 2010 Linus Torvalds
*/
#include <linux/pagemap.h>
#include <asm/tlb.h>
#include <asm-generic/pgtable.h>
/*
* If a p?d_bad entry is found while walking page tables, report
* the error, before resetting entry to p?d_none. Usually (but
* very seldom) called out from the p?d_none_or_clear_bad macros.
*/
void pgd_clear_bad(pgd_t *pgd)
{
pgd_ERROR(*pgd);
pgd_clear(pgd);
}
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void pud_clear_bad(pud_t *pud)
{
pud_ERROR(*pud);
pud_clear(pud);
}
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void pmd_clear_bad(pmd_t *pmd)
{
pmd_ERROR(*pmd);
pmd_clear(pmd);
}
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#ifndef __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
/*
* Only sets the access flags (dirty, accessed), as well as write
* permission. Furthermore, we know it always gets set to a "more
* permissive" setting, which allows most architectures to optimize
* this. We return whether the PTE actually changed, which in turn
* instructs the caller to do things like update__mmu_cache. This
* used to be done in the caller, but sparc needs minor faults to
* force that call on sun4c so we changed this macro slightly
*/
int ptep_set_access_flags(struct vm_area_struct *vma,
unsigned long address, pte_t *ptep,
pte_t entry, int dirty)
{
int changed = !pte_same(*ptep, entry);
if (changed) {
set_pte_at(vma->vm_mm, address, ptep, entry);
flush_tlb_fix_spurious_fault(vma, address);
}
return changed;
}
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| Total | 65 | 100.00% | 2 | 100.00% |
#endif
#ifndef __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH
int ptep_clear_flush_young(struct vm_area_struct *vma,
unsigned long address, pte_t *ptep)
{
int young;
young = ptep_test_and_clear_young(vma, address, ptep);
if (young)
flush_tlb_page(vma, address);
return young;
}
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| Person | Tokens | Prop | Commits | CommitProp |
| andrea arcangeli | andrea arcangeli | 32 | 69.57% | 1 | 50.00% |
| vineet gupta | vineet gupta | 14 | 30.43% | 1 | 50.00% |
| Total | 46 | 100.00% | 2 | 100.00% |
#endif
#ifndef __HAVE_ARCH_PTEP_CLEAR_FLUSH
pte_t ptep_clear_flush(struct vm_area_struct *vma, unsigned long address,
pte_t *ptep)
{
struct mm_struct *mm = (vma)->vm_mm;
pte_t pte;
pte = ptep_get_and_clear(mm, address, ptep);
if (pte_accessible(mm, pte))
flush_tlb_page(vma, address);
return pte;
}
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| andrea arcangeli | andrea arcangeli | 37 | 59.68% | 1 | 50.00% |
| vineet gupta | vineet gupta | 25 | 40.32% | 1 | 50.00% |
| Total | 62 | 100.00% | 2 | 100.00% |
#endif
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
#ifndef __HAVE_ARCH_PMDP_SET_ACCESS_FLAGS
int pmdp_set_access_flags(struct vm_area_struct *vma,
unsigned long address, pmd_t *pmdp,
pmd_t entry, int dirty)
{
int changed = !pmd_same(*pmdp, entry);
VM_BUG_ON(address & ~HPAGE_PMD_MASK);
if (changed) {
set_pmd_at(vma->vm_mm, address, pmdp, entry);
flush_pmd_tlb_range(vma, address, address + HPAGE_PMD_SIZE);
}
return changed;
}
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| Person | Tokens | Prop | Commits | CommitProp |
| andrea arcangeli | andrea arcangeli | 45 | 58.44% | 1 | 33.33% |
| vineet gupta | vineet gupta | 32 | 41.56% | 2 | 66.67% |
| Total | 77 | 100.00% | 3 | 100.00% |
#endif
#ifndef __HAVE_ARCH_PMDP_CLEAR_YOUNG_FLUSH
int pmdp_clear_flush_young(struct vm_area_struct *vma,
unsigned long address, pmd_t *pmdp)
{
int young;
VM_BUG_ON(address & ~HPAGE_PMD_MASK);
young = pmdp_test_and_clear_young(vma, address, pmdp);
if (young)
flush_pmd_tlb_range(vma, address, address + HPAGE_PMD_SIZE);
return young;
}
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| Person | Tokens | Prop | Commits | CommitProp |
| andrea arcangeli | andrea arcangeli | 30 | 51.72% | 1 | 25.00% |
| vineet gupta | vineet gupta | 25 | 43.10% | 2 | 50.00% |
| rik van riel | rik van riel | 3 | 5.17% | 1 | 25.00% |
| Total | 58 | 100.00% | 4 | 100.00% |
#endif
#ifndef __HAVE_ARCH_PMDP_HUGE_CLEAR_FLUSH
pmd_t pmdp_huge_clear_flush(struct vm_area_struct *vma, unsigned long address,
pmd_t *pmdp)
{
pmd_t pmd;
VM_BUG_ON(address & ~HPAGE_PMD_MASK);
VM_BUG_ON(!pmd_trans_huge(*pmdp) && !pmd_devmap(*pmdp));
pmd = pmdp_huge_get_and_clear(vma->vm_mm, address, pmdp);
flush_pmd_tlb_range(vma, address, address + HPAGE_PMD_SIZE);
return pmd;
}
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| Person | Tokens | Prop | Commits | CommitProp |
| andrea arcangeli | andrea arcangeli | 53 | 72.60% | 1 | 20.00% |
| aneesh kumar | aneesh kumar | 12 | 16.44% | 2 | 40.00% |
| dan williams | dan williams | 7 | 9.59% | 1 | 20.00% |
| vineet gupta | vineet gupta | 1 | 1.37% | 1 | 20.00% |
| Total | 73 | 100.00% | 5 | 100.00% |
#endif
#ifndef __HAVE_ARCH_PGTABLE_DEPOSIT
void pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp,
pgtable_t pgtable)
{
assert_spin_locked(pmd_lockptr(mm, pmdp));
/* FIFO */
if (!pmd_huge_pte(mm, pmdp))
INIT_LIST_HEAD(&pgtable->lru);
else
list_add(&pgtable->lru, &pmd_huge_pte(mm, pmdp)->lru);
pmd_huge_pte(mm, pmdp) = pgtable;
}
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| Person | Tokens | Prop | Commits | CommitProp |
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| aneesh kumar | aneesh kumar | 4 | 5.41% | 1 | 25.00% |
| Total | 74 | 100.00% | 4 | 100.00% |
#endif
#ifndef __HAVE_ARCH_PGTABLE_WITHDRAW
/* no "address" argument so destroys page coloring of some arch */
pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp)
{
pgtable_t pgtable;
assert_spin_locked(pmd_lockptr(mm, pmdp));
/* FIFO */
pgtable = pmd_huge_pte(mm, pmdp);
pmd_huge_pte(mm, pmdp) = list_first_entry_or_null(&pgtable->lru,
struct page, lru);
if (pmd_huge_pte(mm, pmdp))
list_del(&pgtable->lru);
return pgtable;
}
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| Person | Tokens | Prop | Commits | CommitProp |
| gerald schaefer | gerald schaefer | 47 | 61.04% | 1 | 20.00% |
| kirill a. shutemov | kirill a. shutemov | 15 | 19.48% | 2 | 40.00% |
| geliang tang | geliang tang | 11 | 14.29% | 1 | 20.00% |
| aneesh kumar | aneesh kumar | 4 | 5.19% | 1 | 20.00% |
| Total | 77 | 100.00% | 5 | 100.00% |
#endif
#ifndef __HAVE_ARCH_PMDP_INVALIDATE
void pmdp_invalidate(struct vm_area_struct *vma, unsigned long address,
pmd_t *pmdp)
{
pmd_t entry = *pmdp;
set_pmd_at(vma->vm_mm, address, pmdp, pmd_mknotpresent(entry));
flush_pmd_tlb_range(vma, address, address + HPAGE_PMD_SIZE);
}
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| Person | Tokens | Prop | Commits | CommitProp |
| gerald schaefer | gerald schaefer | 43 | 84.31% | 1 | 25.00% |
| mel gorman | mel gorman | 6 | 11.76% | 1 | 25.00% |
| vineet gupta | vineet gupta | 1 | 1.96% | 1 | 25.00% |
| matthew wilcox | matthew wilcox | 1 | 1.96% | 1 | 25.00% |
| Total | 51 | 100.00% | 4 | 100.00% |
#endif
#ifndef pmdp_collapse_flush
pmd_t pmdp_collapse_flush(struct vm_area_struct *vma, unsigned long address,
pmd_t *pmdp)
{
/*
* pmd and hugepage pte format are same. So we could
* use the same function.
*/
pmd_t pmd;
VM_BUG_ON(address & ~HPAGE_PMD_MASK);
VM_BUG_ON(pmd_trans_huge(*pmdp));
pmd = pmdp_huge_get_and_clear(vma->vm_mm, address, pmdp);
/* collapse entails shooting down ptes not pmd */
flush_tlb_range(vma, address, address + HPAGE_PMD_SIZE);
return pmd;
}
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| aneesh kumar | aneesh kumar | 65 | 97.01% | 2 | 66.67% |
| vineet gupta | vineet gupta | 2 | 2.99% | 1 | 33.33% |
| Total | 67 | 100.00% | 3 | 100.00% |
#endif
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
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| Person | Tokens | Prop | Commits | CommitProp |
| andrea arcangeli | andrea arcangeli | 293 | 37.61% | 1 | 5.00% |
| gerald schaefer | gerald schaefer | 154 | 19.77% | 2 | 10.00% |
| vineet gupta | vineet gupta | 110 | 14.12% | 4 | 20.00% |
| aneesh kumar | aneesh kumar | 93 | 11.94% | 3 | 15.00% |
| joonsoo kim | joonsoo kim | 61 | 7.83% | 1 | 5.00% |
| kirill a. shutemov | kirill a. shutemov | 35 | 4.49% | 2 | 10.00% |
| geliang tang | geliang tang | 11 | 1.41% | 1 | 5.00% |
| dan williams | dan williams | 7 | 0.90% | 1 | 5.00% |
| mel gorman | mel gorman | 6 | 0.77% | 1 | 5.00% |
| rik van riel | rik van riel | 5 | 0.64% | 2 | 10.00% |
| andrew morton | andrew morton | 3 | 0.39% | 1 | 5.00% |
| matthew wilcox | matthew wilcox | 1 | 0.13% | 1 | 5.00% |
| Total | 779 | 100.00% | 20 | 100.00% |
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