On Tue 11-09-12 17:47:16, Will Deacon wrote: > From: Steve Capper <steve.capper@xxxxxxx> > > Different architectures have slightly different pre-requisites for supporting > Transparent Huge Pages. To simplify the layout of mm/Kconfig, a new option > HAVE_ARCH_TRANSPARENT_HUGEPAGE is introduced and set in each architecture's > Kconfig file (at the moment x86, with ARM being set in a future patch). > > Signed-off-by: Steve Capper <steve.capper@xxxxxxx> > Signed-off-by: Will Deacon <will.deacon@xxxxxxx> Makes sense if there are going to be more archs to support THP. Reviewed-by: Michal Hocko <mhocko@xxxxxxx> > --- > arch/x86/Kconfig | 4 ++++ > mm/Kconfig | 2 +- > 2 files changed, 5 insertions(+), 1 deletions(-) > > diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig > index 8ec3a1a..7decdcf 100644 > --- a/arch/x86/Kconfig > +++ b/arch/x86/Kconfig > @@ -1297,6 +1297,10 @@ config ILLEGAL_POINTER_VALUE > default 0 if X86_32 > default 0xdead000000000000 if X86_64 > > +config HAVE_ARCH_TRANSPARENT_HUGEPAGE > + def_bool y > + depends on MMU > + > source "mm/Kconfig" > > config HIGHPTE > diff --git a/mm/Kconfig b/mm/Kconfig > index d5c8019..3322342 100644 > --- a/mm/Kconfig > +++ b/mm/Kconfig > @@ -318,7 +318,7 @@ config NOMMU_INITIAL_TRIM_EXCESS > > config TRANSPARENT_HUGEPAGE > bool "Transparent Hugepage Support" > - depends on X86 && MMU > + depends on HAVE_ARCH_TRANSPARENT_HUGEPAGE > select COMPACTION > help > Transparent Hugepages allows the kernel to use huge pages and > -- > 1.7.4.1 > -- Michal Hocko SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
