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-rw-r--r--pkgs/os-specific/linux/zen-kernel/2.6.31-zen0.nix7
-rw-r--r--pkgs/top-level/all-packages.nix4
2 files changed, 10 insertions, 1 deletions
diff --git a/pkgs/os-specific/linux/zen-kernel/2.6.31-zen0.nix b/pkgs/os-specific/linux/zen-kernel/2.6.31-zen0.nix
index 1fb33fdc2638..6468542f7658 100644
--- a/pkgs/os-specific/linux/zen-kernel/2.6.31-zen0.nix
+++ b/pkgs/os-specific/linux/zen-kernel/2.6.31-zen0.nix
@@ -62,7 +62,12 @@ in
     killOption CONFIG_ACPI_CUSTOM_DSDT_INITRD
     killOption CONFIG_DEVTMPFS
     killOption CONFIG_DEVTMPFS_MOUNT
-
+  '' +
+  (if a.lib.attrByPath ["ckSched"] false a then ''
+    killOption CONFIG_CPU_CFS
+    setOptionYes CONFIG_CPU_BFS
+  ''else "") +
+  ''
     cp .config ${config}
   '';
 })
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index dd3e4d4657c0..dddbe2b0ce5a 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -5331,6 +5331,10 @@ let
       lib builderDefs;
   };
 
+  kernel_2_6_31_zen0_bfs = kernel_2_6_31_zen0.override {
+    ckSched = true;
+  };
+
   /* Kernel modules are inherently tied to a specific kernel.  So
      rather than provide specific instances of those packages for a
      specific kernel, we have a function that builds those packages