|
|
|
|
@@ -1,17 +1,69 @@
|
|
|
|
|
#!/bin/sh /etc/rc.common
|
|
|
|
|
|
|
|
|
|
START=15
|
|
|
|
|
START=98
|
|
|
|
|
|
|
|
|
|
boot() {
|
|
|
|
|
local governor
|
|
|
|
|
# ipq806x_power_auto()
|
|
|
|
|
# Changes the governor to ondemand and sets the default parameters for cpu ondemand governor.
|
|
|
|
|
# The parameters are tuned for best performance than for power.
|
|
|
|
|
# Also, the up_thresholds have been set to low value, to workaround the cpu
|
|
|
|
|
# utilization anamolies we are seeing with kcpustat with tickless kernel.
|
|
|
|
|
ipq806x_power_auto() {
|
|
|
|
|
echo "ondemand" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
|
|
|
|
|
echo "ondemand" > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor
|
|
|
|
|
|
|
|
|
|
governor=$(cat /sys/devices/system/cpu/cpufreq/policy0/scaling_governor)
|
|
|
|
|
# Change the minimum operating frequency for CPU0.
|
|
|
|
|
# This is required for cases where large amount of network traffic is sent
|
|
|
|
|
# instantaneously without any ramp-up time , when CPU is at minimum perf level.
|
|
|
|
|
# At 384 MHz, CPU0 stays fully busy in softirq context and doesn't move to ksoftirqd, and
|
|
|
|
|
# doesn't give any other thread including cpufreq thread a chance to run.
|
|
|
|
|
# Hence, the CPU frequency is locked up at 384MHz till the traffic is stopped.
|
|
|
|
|
# Increasing the min frequency for CPU0 to 800 MHz (L2=1GHz), allows 4 Gbps instantaneous
|
|
|
|
|
# traffic without any hangs/lockups.
|
|
|
|
|
#
|
|
|
|
|
# CPU1 min frequency also has to be increased because there is a hardware constraint
|
|
|
|
|
# kraits cannot operate at 384MHz when L2 is at 1GHz.
|
|
|
|
|
#
|
|
|
|
|
# The impact on idle-state power with this change is about ~40-45mW.
|
|
|
|
|
# echo "800000" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq
|
|
|
|
|
# echo "800000" > /sys/devices/system/cpu/cpu1/cpufreq/scaling_min_freq
|
|
|
|
|
|
|
|
|
|
if [ "$governor" = "ondemand" ]; then
|
|
|
|
|
# Effective only with ondemand
|
|
|
|
|
echo 600000 > /sys/devices/system/cpu/cpufreq/policy0/scaling_min_freq
|
|
|
|
|
echo 600000 > /sys/devices/system/cpu/cpufreq/policy1/scaling_min_freq
|
|
|
|
|
# Change sampling rate for frequency scaling decisions to 0,5s, from 10 ms
|
|
|
|
|
echo "500000" > /sys/devices/system/cpu/cpufreq/ondemand/sampling_rate
|
|
|
|
|
|
|
|
|
|
# Change sampling rate for frequency down scaling decision to 10s
|
|
|
|
|
echo 10 > /sys/devices/system/cpu/cpufreq/ondemand/sampling_down_factor
|
|
|
|
|
|
|
|
|
|
# Change the CPU load threshold above which frequency is up-scaled to
|
|
|
|
|
# turbo frequency,to 50%
|
|
|
|
|
echo 50 > /sys/devices/system/cpu/cpufreq/ondemand/up_threshold
|
|
|
|
|
fi
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
ipq40xx_power_auto() {
|
|
|
|
|
# change scaling governor as ondemand to enable clock scaling based on system load
|
|
|
|
|
echo "ondemand" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
|
|
|
|
|
|
|
|
|
|
# set scaling min freq as 200 MHz
|
|
|
|
|
echo "200000" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq
|
|
|
|
|
|
|
|
|
|
# Change sampling rate for frequency scaling decisions to 1s, from 10 ms
|
|
|
|
|
echo "1000000" > /sys/devices/system/cpu/cpufreq/ondemand/sampling_rate
|
|
|
|
|
|
|
|
|
|
# Change sampling rate for frequency down scaling decision to 10s
|
|
|
|
|
echo 10 > /sys/devices/system/cpu/cpufreq/ondemand/sampling_down_factor
|
|
|
|
|
|
|
|
|
|
# Change the CPU load threshold above which frequency is up-scaled to
|
|
|
|
|
# turbo frequency,to 50%
|
|
|
|
|
echo 50 > /sys/devices/system/cpu/cpufreq/ondemand/up_threshold
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
start() {
|
|
|
|
|
. /lib/functions/uci-defaults.sh
|
|
|
|
|
|
|
|
|
|
local board=$(board_name)
|
|
|
|
|
case "$board" in
|
|
|
|
|
zyxel,nbg6817 | netgear,r7800 | db149 | ap148 | ap145 | ap148_1xx | db149_1xx | db149_2xx | ap145_1xx | ap160 | ap160_2xx | ap161 | ak01_1xx)
|
|
|
|
|
ipq806x_power_auto ;;
|
|
|
|
|
ap-dk01.1-c1 | ap-dk01.1-c2 | ap-dk04.1-c1 | ap-dk04.1-c2 | ap-dk04.1-c3 | ap-dk04.1-c4 | ap-dk04.1-c5 | ap-dk05.1-c1 | ap-dk06.1-c1 | ap-dk07.1-c1 | ap-dk07.1-c2 | ap-dk07.1-c3)
|
|
|
|
|
ipq40xx_power_auto ;;
|
|
|
|
|
esac
|
|
|
|
|
}
|
|
|
|
|
|