From 3f01caa89f5f65cb55632ce2815ede33440aa9be Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <eelco.dolstra@logicblox.com>
Date: Wed, 16 Apr 2014 22:30:58 +0200
Subject: [PATCH] linux: Enable transparent hugepages

---
 pkgs/os-specific/linux/kernel/common-config.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkgs/os-specific/linux/kernel/common-config.nix b/pkgs/os-specific/linux/kernel/common-config.nix
index 5aed09105cc..15473ea257c 100644
--- a/pkgs/os-specific/linux/kernel/common-config.nix
+++ b/pkgs/os-specific/linux/kernel/common-config.nix
@@ -311,6 +311,11 @@ with stdenv.lib;
   9P_FSCACHE y
   9P_FS_POSIX_ACL y
 
+  # Enable transparent support for huge pages.
+  TRANSPARENT_HUGEPAGE? y
+  TRANSPARENT_HUGEPAGE_ALWAYS? n
+  TRANSPARENT_HUGEPAGE_MADVISE? y
+
   ${kernelPlatform.kernelExtraConfig or ""}
   ${extraConfig}
 ''