From 4c76d9d1fb9b21fa10c9e4c1fab2875018a88aa1 Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Thu, 13 Jan 2011 15:46:39 -0800 Subject: [PATCH] thp: CONFIG_TRANSPARENT_HUGEPAGE Add config option. Signed-off-by: Andrea Arcangeli Acked-by: Rik van Riel Acked-by: Mel Gorman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/Kconfig | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/mm/Kconfig b/mm/Kconfig index c2c8a4a11898..3982be2d721a 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -302,6 +302,20 @@ config NOMMU_INITIAL_TRIM_EXCESS See Documentation/nommu-mmap.txt for more information. +config TRANSPARENT_HUGEPAGE + bool "Transparent Hugepage Support" if EMBEDDED + depends on X86_64 && MMU + default y + help + Transparent Hugepages allows the kernel to use huge pages and + huge tlb transparently to the applications whenever possible. + This feature can improve computing performance to certain + applications by speeding up page faults during memory + allocation, by reducing the number of tlb misses and by speeding + up the pagetable walking. + + If memory constrained on embedded, you may want to say N. + # # UP and nommu archs use km based percpu allocator #