方法如下:
echo 0 > /proc/sys/kernel/sched_downmigrate
echo 0 > /proc/sys/kernel/sched_upmigrate

其实就是把这两个文件设置成0，顺序不能反

改完效果如图，大核心优先负载，小核心负载很低

echo 10 > /proc/sys/kernel/sched_spill_nr_run
echo 85 > /proc/sys/kernel/sched_spill_load
这两个的作用大核处于多少高的负载的时候把任务扔给小核，前者是一定时间内的任务数，后者是负载

参考了这篇文章:http://wapwenku.baidu.com/view/6b38e64251e79b896902262c.html?ssid=0&from=1677a&uid=0&pu=usm@0,sz@320_1001,ta@iphone_2_6.0_3_537&bd_page_type=1&baiduid=C93626F570D572986064D6C882B8320C&tj=www_normal_1_0_10_title#2

echo 1 > /sys/module/msm_performance/parameters/overfreq
echo 1 > /proc/sys/kernel/sched_window_stats_policy
echo 85 > /proc/sys/kernel/sched_big_waker_task_load
echo 1 > /proc/sys/kernel/sched_window_stats_policy
echo 110 > /proc/sys/kernel/sched_wakeup_load_threshold
echo 0 > /proc/sys/kernel/sched_upmigrate_min_nice
echo 0 > /proc/sys/kernel/sched_downmigrate
echo 0 > /proc/sys/kernel/sched_upmigrate
echo 10 > /proc/sys/kernel/sched_spill_nr_run
echo 85 > /proc/sys/kernel/sched_spill_load
echo 25 > /proc/sys/kernel/sched_small_wakee_task_load
echo 950000 > /proc/sys/kernel/sched_rt_runtime_us
echo 1000000 > /proc/sys/kernel/sched_rt_period_us
echo 5 > /proc/sys/kernel/sched_ravg_hist_size
echo 1 > /proc/sys/kernel/sched_migration_fixup
echo 27 > /proc/sys/kernel/sched_init_task_load
echo 85 > /proc/sys/kernel/sched_heavy_task
echo 600000 > /proc/sys/kernel/sched_freq_inc_notify
echo 410000 > /proc/sys/kernel/sched_freq_dec_notify
echo 0 > /proc/sys/kernel/sched_boost
echo disable > /sys/devices/soc/soc:qcom,bcl/mode
chmod 644 /sys/kernel/debug/sched_features
echo NO_GENTLE_FAIR_SLEEPERS > /sys/kernel/debug/sched_features
echo NO_NEW_FAIR_SLEEPERS > /sys/kernel/debug/sched_features
echo NO_NORMALIZED_SLEEPER > /sys/kernel/debug/sched_features
chmod 444 /sys/kernel/debug/sched_features

@烧龙820

恩