1 files changed, 46 insertions, 0 deletions
diff --git a/pkgs/kpatches/bfqsched.nix b/pkgs/kpatches/bfqsched.nix
new file mode 100644
index 00000000..3ba7310f
--- /dev/null
+++ b/pkgs/kpatches/bfqsched.nix
@@ -0,0 +1,46 @@
+{ stdenv, fetchurl }:
+
+let
+  bfqVersion = "v7r5";
+  kernelVersion = "3.15";
+  version = "${kernelVersion}.0-${bfqVersion}";
+
+  baseURL = "http://algo.ing.unimo.it/people/paolo/disk_sched/patches";
+
+  fetchPatch = { name, sha256 }: fetchurl {
+    url = "${baseURL}/${version}/${name}.patch";
+    inherit sha256;
+  };
+
+  allPatches = [
+    (fetchPatch {
+      name = "0001-block-cgroups-kconfig-build-bits-for-BFQ-"
+           + "${bfqVersion}-${kernelVersion}";
+      sha256 = "16vrdg9ky7q89sb7gp8as7qslqg1zy1n28cnyshm91qnf49wfh7g";
+    })
+    (fetchPatch {
+      name = "0002-block-introduce-the-BFQ-"
+           + "${bfqVersion}-I-O-sched-for-${kernelVersion}";
+      sha256 = "1gf4y5i9prhg9ls2g8apaiygm538khhpp35dahgv59hr3sfwsghs";
+    })
+    (fetchPatch {
+      name = "0003-block-bfq-add-Early-Queue-Merge-EQM-to-BFQ-"
+           + "${bfqVersion}-for-${kernelVersion}.0";
+      sha256 = "1q3fn6gl3lhvbqfhaarpv399id9sa32zx6ygqx4x98zmixwrsn9z";
+    })
+    ./bfqsched.patch
+  ];
+
+  patch = stdenv.mkDerivation {
+    name = "bfqsched-${version}.patch";
+    inherit allPatches;
+    buildCommand = ''
+      sed -e 's/IS_SUBSYS_ENABLED/IS_ENABLED/' \
+          -e '/SUBSYS/s/perf/&_event/' $allPatches > "$out"
+    '';
+  };
+
+in {
+  name = "bfqsched-${version}";
+  inherit version patch;
+}