diff options
| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2016-04-29 23:25:56 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-05-01 18:32:57 +1000 |
| commit | 6cc1a0ee4ce29ad1cbdc622db6f9bc16d3056067 (patch) | |
| tree | ef39ca82465ea177b39fca9b0d73fe1c69fcde9d /arch/powerpc/include/asm/book3s/64/radix.h | |
| parent | a9252aaefe7e72133e7a37e0eff4e950a4f33af1 (diff) | |
powerpc/mm/radix: Add radix callback for pmd accessors
This only does 64K Linux page support for now. 64K hash Linux config
THP needs to differentiate it from hugetlb huge page because with THP we
need to track hash pte slot information with respect to each subpage.
This is not needed with hugetlb hugepage, because we don't do MPSS with
hugetlb.
Radix doesn't have any such restrictions.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/book3s/64/radix.h')
| -rw-r--r-- | arch/powerpc/include/asm/book3s/64/radix.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/book3s/64/radix.h b/arch/powerpc/include/asm/book3s/64/radix.h index 4b581a0ebc0a..db7e678e2bb6 100644 --- a/arch/powerpc/include/asm/book3s/64/radix.h +++ b/arch/powerpc/include/asm/book3s/64/radix.h @@ -121,5 +121,14 @@ static inline int radix__pgd_bad(pgd_t pgd) return !!(pgd_val(pgd) & RADIX_PGD_BAD_BITS); } +#ifdef CONFIG_TRANSPARENT_HUGEPAGE + +static inline int radix__pmd_trans_huge(pmd_t pmd) +{ + return !!(pmd_val(pmd) & _PAGE_PTE); +} + +#endif + #endif /* __ASSEMBLY__ */ #endif |