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| author | Chris Metcalf | 2012-03-28 19:59:18 +0200 |
|---|---|---|
| committer | Chris Metcalf | 2012-05-25 18:48:21 +0200 |
| commit | 73636b1aacb1a07e6fbe0d25e560e69b024a8e25 (patch) | |
| tree | 9531c202c6b3f67fba1cd7ac2b83fa32c31fe197 /include/asm-generic/pgtable.h | |
| parent | arch/tile: use interrupt critical sections less (diff) | |
| download | kernel-qcow2-linux-73636b1aacb1a07e6fbe0d25e560e69b024a8e25.tar.gz kernel-qcow2-linux-73636b1aacb1a07e6fbe0d25e560e69b024a8e25.tar.xz kernel-qcow2-linux-73636b1aacb1a07e6fbe0d25e560e69b024a8e25.zip | |
arch/tile: allow building Linux with transparent huge pages enabled
The change adds some infrastructure for managing tile pmd's more generally,
using pte_pmd() and pmd_pte() methods to translate pmd values to and
from ptes, since on TILEPro a pmd is really just a nested structure
holding a pgd (aka pte). Several existing pmd methods are moved into
this framework, and a whole raft of additional pmd accessors are defined
that are used by the transparent hugepage framework.
The tile PTE now has a "client2" bit. The bit is used to indicate a
transparent huge page is in the process of being split into subpages.
This change also fixes a generic bug where the return value of the
generic pmdp_splitting_flush() was incorrect.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Diffstat (limited to 'include/asm-generic/pgtable.h')
| -rw-r--r-- | include/asm-generic/pgtable.h | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h index 125c54e98517..e2768f188f55 100644 --- a/include/asm-generic/pgtable.h +++ b/include/asm-generic/pgtable.h @@ -158,9 +158,8 @@ static inline void pmdp_set_wrprotect(struct mm_struct *mm, #endif #ifndef __HAVE_ARCH_PMDP_SPLITTING_FLUSH -extern pmd_t pmdp_splitting_flush(struct vm_area_struct *vma, - unsigned long address, - pmd_t *pmdp); +extern void pmdp_splitting_flush(struct vm_area_struct *vma, + unsigned long address, pmd_t *pmdp); #endif #ifndef __HAVE_ARCH_PTE_SAME |