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| author | Tuomas Tynkkynen <tuomas@tuxera.com> | 2018-07-18 13:24:36 +0300 |
|---|---|---|
| committer | Tuomas Tynkkynen <tuomas@tuxera.com> | 2018-07-24 23:36:06 +0300 |
| commit | 29b84841d2a83a846a27ab2cea03fc84eec57e51 (patch) | |
| tree | f4137d23fd29cbe3bb2974fa7e13146622abb6e8 /pkgs/os-specific | |
| parent | 4cec65482a1bd0c4bbfa9181d62d7f006269015b (diff) | |
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kernel: Reduce peak disk usage during build
Since commit f620b1b693ec25af, the build directory is located inside the
source directory. Thus, the `cp -dpR` copies gigabytes worth of .o files
only to be deleted later on when we trim all non-essential files from
`$dev/lib/modules/${modDirVersion}/source/` thus causing a significant
amount of wasted I/O and peak disk usage.
As `cp` doesn't come with a `--exclude` flag, use rsync. And throw out
the Documentation folder while at it.
Diffstat (limited to 'pkgs/os-specific')
| -rw-r--r-- | pkgs/os-specific/linux/kernel/manual-config.nix | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/pkgs/os-specific/linux/kernel/manual-config.nix b/pkgs/os-specific/linux/kernel/manual-config.nix index 5d08ab05d97f..80721c4b401d 100644 --- a/pkgs/os-specific/linux/kernel/manual-config.nix +++ b/pkgs/os-specific/linux/kernel/manual-config.nix @@ -1,4 +1,4 @@ -{ buildPackages, runCommand, nettools, bc, bison, flex, perl, gmp, libmpc, mpfr, openssl +{ buildPackages, runCommand, nettools, bc, bison, flex, perl, rsync, gmp, libmpc, mpfr, openssl , libelf , utillinux , writeTextFile @@ -164,8 +164,14 @@ let unlink $out/lib/modules/${modDirVersion}/build unlink $out/lib/modules/${modDirVersion}/source - mkdir -p $dev/lib/modules/${modDirVersion}/build - cp -dpR .. $dev/lib/modules/${modDirVersion}/source + mkdir -p $dev/lib/modules/${modDirVersion}/{build,source} + + # To save space, exclude a bunch of unneeded stuff when copying. + (cd .. && rsync --archive --prune-empty-dirs \ + --exclude='/build/' \ + --exclude='/Documentation/' \ + * $dev/lib/modules/${modDirVersion}/source/) + cd $dev/lib/modules/${modDirVersion}/source cp $buildRoot/{.config,Module.symvers} $dev/lib/modules/${modDirVersion}/build @@ -251,7 +257,7 @@ stdenv.mkDerivation ((drvAttrs config hostPlatform.platform kernelPatches config enableParallelBuilding = true; depsBuildBuild = [ buildPackages.stdenv.cc ]; - nativeBuildInputs = [ perl bc nettools openssl gmp libmpc mpfr ] + nativeBuildInputs = [ perl bc nettools openssl rsync gmp libmpc mpfr ] ++ optional (stdenv.hostPlatform.platform.kernelTarget == "uImage") buildPackages.ubootTools ++ optional (stdenv.lib.versionAtLeast version "4.14") libelf ++ optional (stdenv.lib.versionAtLeast version "4.15") utillinux |