cregit-Linux how code gets into the kernel

Release 4.11 mm/pgtable-generic.c

Directory: mm
/*
 *  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); }

Contributors

PersonTokensPropCommitsCommitProp
JoonSoo Kim20100.00%1100.00%
Total20100.00%1100.00%


void p4d_clear_bad(p4d_t *p4d) { p4d_ERROR(*p4d); p4d_clear(p4d); }

Contributors

PersonTokensPropCommitsCommitProp
Kirill A. Shutemov20100.00%1100.00%
Total20100.00%1100.00%


void pud_clear_bad(pud_t *pud) { pud_ERROR(*pud); pud_clear(pud); }

Contributors

PersonTokensPropCommitsCommitProp
JoonSoo Kim20100.00%1100.00%
Total20100.00%1100.00%


void pmd_clear_bad(pmd_t *pmd) { pmd_ERROR(*pmd); pmd_clear(pmd); }

Contributors

PersonTokensPropCommitsCommitProp
JoonSoo Kim20100.00%1100.00%
Total20100.00%1100.00%

#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; }

Contributors

PersonTokensPropCommitsCommitProp
Andrea Arcangeli6498.46%150.00%
Rik Van Riel11.54%150.00%
Total65100.00%2100.00%

#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; }

Contributors

PersonTokensPropCommitsCommitProp
Andrea Arcangeli3269.57%150.00%
Vineet Gupta1430.43%150.00%
Total46100.00%2100.00%

#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; }

Contributors

PersonTokensPropCommitsCommitProp
Andrea Arcangeli3759.68%150.00%
Vineet Gupta2540.32%150.00%
Total62100.00%2100.00%

#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; }

Contributors

PersonTokensPropCommitsCommitProp
Andrea Arcangeli4558.44%133.33%
Vineet Gupta3241.56%266.67%
Total77100.00%3100.00%

#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; }

Contributors

PersonTokensPropCommitsCommitProp
Andrea Arcangeli3051.72%125.00%
Vineet Gupta2543.10%250.00%
Rik Van Riel35.17%125.00%
Total58100.00%4100.00%

#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; }

Contributors

PersonTokensPropCommitsCommitProp
Andrea Arcangeli5372.60%120.00%
Aneesh Kumar K.V1216.44%240.00%
Dan J Williams79.59%120.00%
Vineet Gupta11.37%120.00%
Total73100.00%5100.00%

#ifdef CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD
pud_t pudp_huge_clear_flush(struct vm_area_struct *vma, unsigned long address, pud_t *pudp) { pud_t pud; VM_BUG_ON(address & ~HPAGE_PUD_MASK); VM_BUG_ON(!pud_trans_huge(*pudp) && !pud_devmap(*pudp)); pud = pudp_huge_get_and_clear(vma->vm_mm, address, pudp); flush_pud_tlb_range(vma, address, address + HPAGE_PUD_SIZE); return pud; }

Contributors

PersonTokensPropCommitsCommitProp
Matthew Wilcox73100.00%1100.00%
Total73100.00%1100.00%

#endif #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; }

Contributors

PersonTokensPropCommitsCommitProp
Gerald Schaefer5067.57%125.00%
Kirill A. Shutemov2027.03%250.00%
Aneesh Kumar K.V45.41%125.00%
Total74100.00%4100.00%

#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; }

Contributors

PersonTokensPropCommitsCommitProp
Gerald Schaefer4761.04%120.00%
Kirill A. Shutemov1519.48%240.00%
Geliang Tang1114.29%120.00%
Aneesh Kumar K.V45.19%120.00%
Total77100.00%5100.00%

#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); }

Contributors

PersonTokensPropCommitsCommitProp
Gerald Schaefer4384.31%125.00%
Mel Gorman611.76%125.00%
Vineet Gupta11.96%125.00%
Matthew Wilcox11.96%125.00%
Total51100.00%4100.00%

#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; }

Contributors

PersonTokensPropCommitsCommitProp
Aneesh Kumar K.V6597.01%266.67%
Vineet Gupta22.99%133.33%
Total67100.00%3100.00%

#endif #endif /* CONFIG_TRANSPARENT_HUGEPAGE */

Overall Contributors

PersonTokensPropCommitsCommitProp
Andrea Arcangeli29333.41%14.55%
Gerald Schaefer15417.56%29.09%
Vineet Gupta11012.54%418.18%
Aneesh Kumar K.V9310.60%313.64%
Matthew Wilcox799.01%29.09%
JoonSoo Kim616.96%14.55%
Kirill A. Shutemov556.27%313.64%
Geliang Tang111.25%14.55%
Dan J Williams70.80%14.55%
Mel Gorman60.68%14.55%
Rik Van Riel50.57%29.09%
Andrew Morton30.34%14.55%
Total877100.00%22100.00%
Directory: mm
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with cregit.