高通平台ondemand调频

关于调频策略更多文章里有一篇关于三星的调频修改方式。

     while true; do cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq;  cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq;  cat /sys/devices/system/cpu/cpu1/cpufreq/cpuinfo_cur_freq;   cat /sys/devices/system/cpu/cpu2/cpufreq/cpuinfo_cur_freq;   cat /sys/devices/system/cpu/cpu3/cpufreq/cpuinfo_cur_freq;    cat /sys/class/thermal/thermal_zone5/temp;cat /sys/class/thermal/thermal_zone6/temp;    cat /sys/class/thermal/thermal_zone7/temp;cat /sys/class/thermal/thermal_zone8/temp;  echo '\n';   sleep 1;done  

当前系统可以支持的调频策略如下：

将高通平台的调频策略如何修改成ondemand

修改文件：

/device/qcom/common/rootdir/etc/init.qcom.post_boot.sh

这里面已经有了相关的策略设置：

  #       for devfreq_gov in /sys/class/devfreq/qcom,cpubw*/governor#       do#           echo "cpubw_hwmon" > $devfreq_gov#       done#       echo "interactive" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor#       echo "interactive" > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor#       echo "interactive" > /sys/devices/system/cpu/cpu2/cpufreq/scaling_governor#       echo "interactive" > /sys/devices/system/cpu/cpu3/cpufreq/scaling_governor#       echo "20000 1400000:40000 1700000:20000" > /sys/devices/system/cpu/cpufreq/interactive/above_hispeed_delay#       echo 90 > /sys/devices/system/cpu/cpufreq/interactive/go_hispeed_load#       echo 1190400 > /sys/devices/system/cpu/cpufreq/interactive/hispeed_freq#       echo 1 > /sys/devices/system/cpu/cpufreq/interactive/io_is_busy#       echo "85 1500000:90 1800000:70" > /sys/devices/system/cpu/cpufreq/interactive/target_loads#       echo 40000 > /sys/devices/system/cpu/cpufreq/interactive/min_sample_time#       echo 20 > /sys/module/cpu_boost/parameters/boost_ms#       echo 1728000 > /sys/module/cpu_boost/parameters/sync_threshold#       echo 100000 > /sys/devices/system/cpu/cpufreq/interactive/sampling_down_factor#       echo 1497600 > /sys/module/cpu_boost/parameters/input_boost_freq#       echo 40 > /sys/module/cpu_boost/parameters/input_boost_ms#       setprop ro.qualcomm.perf.cores_online 2#   ;;#  *)echo "ondemand" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governorecho "ondemand" > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governorecho "ondemand" > /sys/devices/system/cpu/cpu2/cpufreq/scaling_governorecho "ondemand" > /sys/devices/system/cpu/cpu3/cpufreq/scaling_governorecho 50000 > /sys/devices/system/cpu/cpufreq/ondemand/sampling_rateecho 90 > /sys/devices/system/cpu/cpufreq/ondemand/up_thresholdecho 1 > /sys/devices/system/cpu/cpufreq/ondemand/io_is_busyecho 2 > /sys/devices/system/cpu/cpufreq/ondemand/sampling_down_factorecho 10 > /sys/devices/system/cpu/cpufreq/ondemand/down_differentialecho 70 > /sys/devices/system/cpu/cpufreq/ondemand/up_threshold_multi_coreecho 3 > /sys/devices/system/cpu/cpufreq/ondemand/down_differential_multi_coreecho 960000 > /sys/devices/system/cpu/cpufreq/ondemand/optimal_freqecho 960000 > /sys/devices/system/cpu/cpufreq/ondemand/sync_freqecho 1190400 > /sys/devices/system/cpu/cpufreq/ondemand/input_boostecho 80 > /sys/devices/system/cpu/cpufreq/ondemand/up_threshold_any_cpu_load

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