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CPUFreq shenanigans on Kobo (#4114)

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* Switch to ondemand CPUFreq governor on Kobo

My H2O boots with the userspace (!!) governor...
Note that the hardware appears to blissfully ignore any of this, because
the stats still show the CPU changing state on its own...
This commit is contained in:
NiLuJe
2018-07-28 16:09:58 +02:00
committed by GitHub
parent c1965ea8a9
commit b509e54a2a
2 changed files with 8 additions and 1 deletions
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2
base

Submodule base updated: 7ab1e3b7c8...675ec212d0

7
platform/kobo/koreader.sh
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@@ -7,6 +7,10 @@ KOREADER_DIR="${0%/*}"
# we're always starting from our working directory
cd "${KOREADER_DIR}" || exit
# Switch to a sensible CPUFreq governor, even if the HW appears not to give an actual fuck about this...
ORIG_CPUFREQ_GOV="$(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor)"
echo "ondemand" >"/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor"
# update to new version from OTA directory
ko_update_check() {
NEWUPDATE="${KOREADER_DIR}/ota/koreader.updated.tar"
@@ -132,6 +136,9 @@ while [ $RETURN_VALUE -eq 85 ]; do
RETURN_VALUE=$?
done
# Restore original CPUFreq governor...
echo "${ORIG_CPUFREQ_GOV}" >"/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor"
if [ "${FROM_NICKEL}" = "true" ]; then
if [ "${FROM_KFMON}" != "true" ]; then
# start kobo software because it was running before koreader