Initial commit

3 files changed, 53 insertions, 0 deletions

diff --git a/PKGBUILD b/PKGBUILD
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index 0000000..c323dbc
--- /dev/null
+++ b/PKGBUILD
@@ -0,0 +1,26 @@
+# Maintainer: artoo <artoo@artixlinux.org>
+
+_url="https://raw.githubusercontent.com/gentoo/gentoo/master"
+
+pkgname=disable-hyperthreading
+pkgver=20180712
+pkgrel=1
+pkgdesc="OpenRC disable-hyperthreading init script"
+arch=('any')
+url="https://github.com/artix-linux/packages"
+license=('GPL2')
+groups=('openrc-system')
+install=${pkgname}.install
+depends=('openrc' 'cronie')
+backup=('etc/disable-hyperthreading')
+source=("disable-hyperthreading")
+sha256sums=('f718a290526cd74bb3e19af7793321f25a41a9d71d286552d9127eeb32f93c99')
+
+pkgver() {
+    date +%Y%m%d
+}
+
+package() {
+    install -Dm744 ${srcdir}/disable-hyperthreading ${pkgdir}/etc/disable-hyperthreading
+
+}
diff --git a/disable-hyperthreading b/disable-hyperthreading
new file mode 100644
index 0000000..a176e2a
--- /dev/null
+++ b/disable-hyperthreading
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+#!/bin/bash
+for CPU in /sys/devices/system/cpu/cpu[0-9]*; do
+    CPUID=`basename $CPU | cut -b4-`
+    echo -en "CPU: $CPUID\t"
+    [ -e $CPU/online ] && echo "1" > $CPU/online
+    THREAD1=`cat $CPU/topology/thread_siblings_list | cut -f1 -d,`
+    if [ $CPUID = $THREAD1 ]; then
+        echo "-> enable"
+        [ -e $CPU/online ] && echo "1" > $CPU/online
+    else
+        echo "-> disable"
+        echo "0" > $CPU/online
+    fi
+done
diff --git a/disable-hyperthreading.install b/disable-hyperthreading.install
new file mode 100644
index 0000000..9aecba2
--- /dev/null
+++ b/disable-hyperthreading.install
@@ -0,0 +1,13 @@
+
+pre_install() {
+  cat <<EOM
+  == Important ==
+  remember to activate the cron script by adding
+  @reboot root /etc/disable-hyperhtreading
+  to your /etc/crontab
+EOM
+}
+
+pre_upgrade() {
+  pre_install
+}