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authorAndrea Arcangeli <aarcange@redhat.com>2011-01-13 15:46:39 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2011-01-13 17:32:40 -0800
commit4c76d9d1fb9b21fa10c9e4c1fab2875018a88aa1 (patch)
treea7186c416e3fc0451702b42051e4b91dc3893f3f /mm
parent59ff421631295cd54dbf75dcc53d27e84af6d9c0 (diff)
thp: CONFIG_TRANSPARENT_HUGEPAGE
Add config option. Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Acked-by: Rik van Riel <riel@redhat.com> Acked-by: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/Kconfig14
1 files changed, 14 insertions, 0 deletions
diff --git a/mm/Kconfig b/mm/Kconfig
index c2c8a4a1189..3982be2d721 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
#