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authorSteve Capper <steve.capper@linaro.org>2013-04-19 16:23:57 +0100
committerSteve Capper <steve.capper@linaro.org>2013-06-14 09:52:41 +0100
commitaf07484863e0c20796081e57093886c22dc16705 (patch)
treec9891c1048f860413c7cfd79e2b7a686c8be0263 /arch/arm64/Kconfig
parentARM64: mm: Raise MAX_ORDER for 64KB pages and THP. (diff)
downloadlinux-dev-af07484863e0c20796081e57093886c22dc16705.tar.xz
linux-dev-af07484863e0c20796081e57093886c22dc16705.zip
ARM64: mm: THP support.
Bring Transparent HugePage support to ARM. The size of a transparent huge page depends on the normal page size. A transparent huge page is always represented as a pmd. If PAGE_SIZE is 4KB, THPs are 2MB. If PAGE_SIZE is 64KB, THPs are 512MB. Signed-off-by: Steve Capper <steve.capper@linaro.org> Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/Kconfig')
-rw-r--r--arch/arm64/Kconfig3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 10607d63b945..308a55636f76 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -189,6 +189,9 @@ config ARCH_WANT_GENERAL_HUGETLB
config ARCH_WANT_HUGE_PMD_SHARE
def_bool y if !ARM64_64K_PAGES
+config HAVE_ARCH_TRANSPARENT_HUGEPAGE
+ def_bool y
+
source "mm/Kconfig"
config FORCE_MAX_ZONEORDER