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高通msm8994手动提升性能脚本
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stop?thermald??stop?mpdecision??stop?thermal-engine??????#?online?A57??echo?1?>?/sys/devices/system/cpu/cpu2/online??echo?1?>?/sys/devices/system/cpu/cpu3/online??echo?1?>?/sys/devices/system/cpu/cpu4/online??echo?1?>?/sys/devices/system/cpu/cpu5/online??echo?1?>?/sys/devices/system/cpu/cpu6/online??echo?1?>?/sys/devices/system/cpu/cpu7/online??????#?set?governor??echo?performance?>?/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor??echo?performance?>?/sys/devices/system/cpu/cpu4/cpufreq/scaling_governor??????#?set?max?freq??echo?1555200?>?/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq??echo?1958400?>?/sys/devices/system/cpu/cpu4/cpufreq/scaling_max_freq??????#?set?gpu??echo?performance?>?/sys/class/kgsl/kgsl-3d0/devfreq/governor??echo?0?>?/sys/class/kgsl/kgsl-3d0/min_pwrlevel??echo?performance?>?/sys/class/devfreq/qcom,cpubw.32/governor??echo?performance?>?/sys/class/devfreq/qcom,gpubw.71/governor??echo?performance?>?/sys/class/devfreq/qcom,kgsl-busmon.70/governor??
cpu0會一直在線，因此不用手動online。
8994的cpu頻率是按簇調(diào)整的，因此只需要設(shè)置cpu0和cpu4的performance。
拉起來的瞬間可能會觸發(fā)bcl的調(diào)頻和拔核動作，全部拉起來后可能溫度過高導(dǎo)致thermal降頻及拔核。
另外，vendor/qcom/proprietary/Android-perf/core-ctl/core_ctl.c的某些代碼可能會引起拉核失敗或者拉上來后又被這個模塊給down了，需要做如下修改：
將753行cpu_callback()的CPU_UP_PREPARE分支里的如下判斷改成if(0)，這可以防止拉核失敗：
將該文件try_hotplug()函數(shù)里的do_hotplug()取消掉，可以防止該模塊又把拉上來的cpu給offline了。
不過如此修改代碼后，需要手動降低性能：
[plain]?view plaincopy
#offline?A57??echo?0?>?/sys/devices/system/cpu/cpu4/online??echo?0?>?/sys/devices/system/cpu/cpu5/online??echo?0?>?/sys/devices/system/cpu/cpu6/online??echo?0?>?/sys/devices/system/cpu/cpu7/online????#?down?max?freq??echo?960000?>?/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq????echo?simple_ondemand?>?/sys/class/kgsl/kgsl-3d0/devfreq/governor??echo?5?>?/sys/class/kgsl/kgsl-3d0/min_pwrlevel??
[plain]?view plaincopy
stop?thermald??stop?mpdecision??stop?thermal-engine??????#?online?A57??echo?1?>?/sys/devices/system/cpu/cpu2/online??echo?1?>?/sys/devices/system/cpu/cpu3/online??echo?1?>?/sys/devices/system/cpu/cpu4/online??echo?1?>?/sys/devices/system/cpu/cpu5/online??echo?1?>?/sys/devices/system/cpu/cpu6/online??echo?1?>?/sys/devices/system/cpu/cpu7/online??????#?set?governor??echo?performance?>?/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor??echo?performance?>?/sys/devices/system/cpu/cpu4/cpufreq/scaling_governor??????#?set?max?freq??echo?1555200?>?/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq??echo?1958400?>?/sys/devices/system/cpu/cpu4/cpufreq/scaling_max_freq??????#?set?gpu??echo?performance?>?/sys/class/kgsl/kgsl-3d0/devfreq/governor??echo?0?>?/sys/class/kgsl/kgsl-3d0/min_pwrlevel??echo?performance?>?/sys/class/devfreq/qcom,cpubw.32/governor??echo?performance?>?/sys/class/devfreq/qcom,gpubw.71/governor??echo?performance?>?/sys/class/devfreq/qcom,kgsl-busmon.70/governor??cpu0會一直在線，因此不用手動online。
8994的cpu頻率是按簇調(diào)整的，因此只需要設(shè)置cpu0和cpu4的performance。
拉起來的瞬間可能會觸發(fā)bcl的調(diào)頻和拔核動作，全部拉起來后可能溫度過高導(dǎo)致thermal降頻及拔核。
另外，vendor/qcom/proprietary/Android-perf/core-ctl/core_ctl.c的某些代碼可能會引起拉核失敗或者拉上來后又被這個模塊給down了，需要做如下修改：
將753行cpu_callback()的CPU_UP_PREPARE分支里的如下判斷改成if(0)，這可以防止拉核失敗：
將該文件try_hotplug()函數(shù)里的do_hotplug()取消掉，可以防止該模塊又把拉上來的cpu給offline了。
不過如此修改代碼后，需要手動降低性能：
[plain]?view plaincopy
#offline?A57??echo?0?>?/sys/devices/system/cpu/cpu4/online??echo?0?>?/sys/devices/system/cpu/cpu5/online??echo?0?>?/sys/devices/system/cpu/cpu6/online??echo?0?>?/sys/devices/system/cpu/cpu7/online????#?down?max?freq??echo?960000?>?/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq????echo?simple_ondemand?>?/sys/class/kgsl/kgsl-3d0/devfreq/governor??echo?5?>?/sys/class/kgsl/kgsl-3d0/min_pwrlevel??
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