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jemalloc: disable transparent huge pages by default on ARMv6/7

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The default NixOS kernels for ARMv7 (and probably ARMv6) do not have support
for transparent huge pages, but jemalloc is unable to detect this. This is a
known bug and the current solution is to pass --disable-thp to ./configure.
This commit is contained in:
Ben Wolsieffer 2017-12-13 12:02:46 -05:00
parent 9c65f44a1d
commit 275fa4162c
1 changed files with 7 additions and 2 deletions
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9
pkgs/development/libraries/jemalloc/default.nix
View file

@ -1,4 +1,8 @@
{ stdenv, fetchurl }:
{ stdenv, fetchurl,
# jemalloc is unable to correctly detect transparent hugepage support on
# ARM (https://github.com/jemalloc/jemalloc/issues/526), and the default
# kernel ARMv6/7 kernel does not enable it, so we explicitly disable support
thpSupport ? !stdenv.isArm }:
stdenv.mkDerivation rec {
name = "jemalloc-${version}";
@ -12,7 +16,8 @@ stdenv.mkDerivation rec {
# By default, jemalloc puts a je_ prefix onto all its symbols on OSX, which
# then stops downstream builds (mariadb in particular) from detecting it. This
# option should remove the prefix and give us a working jemalloc.
configureFlags = stdenv.lib.optional stdenv.isDarwin "--with-jemalloc-prefix=";
configureFlags = stdenv.lib.optional stdenv.isDarwin "--with-jemalloc-prefix="
++ stdenv.lib.optional (!thpSupport) "--disable-thp";
doCheck = true;