Eric Lee / linux-smarc-t335x-v3.2

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Commit 38e0edb15bd07c6a0caf0cfe39f8f90bd98601b2

Authored by Jeremy Fitzhardinge
Committed by Linus Torvalds
1 parent cd52858c73
Exists in master and in 4 other branches v3.2_AM335xPSP_04.06.00.11, v3.2_NEWT335xPSP_04.06.00.11, v3.2_SBC_SMARTMEN, v3.2_SMARCT335xPSP_04.06.00.11

mm/apply_to_range: call pte function with lazy updates 

Make the pte-level function in apply_to_range be called in lazy mmu mode,
so that any pagetable modifications can be batched.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Showing 1 changed file with 4 additions and 0 deletions Side-by-side Diff

... ... @@ -1645,6 +1645,8 @@
1645 1645  
1646 1646 BUG_ON(pmd_huge(*pmd));
1647 1647  
  1648 + arch_enter_lazy_mmu_mode();
  1649 +
1648 1650 token = pmd_pgtable(*pmd);
1649 1651  
1650 1652 do {
... ... @@ -1652,6 +1654,8 @@
1652 1654 if (err)
1653 1655 break;
1654 1656 } while (pte++, addr += PAGE_SIZE, addr != end);
  1657 +
  1658 + arch_leave_lazy_mmu_mode();
1655 1659  
1656 1660 if (mm != &init_mm)
1657 1661 pte_unmap_unlock(pte-1, ptl);