On 30-11-15, 18:21, dawei chien wrote: > As far as I know, user or shell script has the right for using command > online/offline cpu.
Right. > Either user by console or shell script could make cpu2 online even cpu2 > already onlined. Hey, no. You can't online that is already online. You can write '1' to the file /sys/devices/system/cpu/cpuX/online, but it wouldn't have any affect. > That could cause of_cpufreq_cooling_register execute many times for the > same cooling device. No. > "echo 1 > /sys/devices/system/cpu/cpu2/online" > > With above hotplug command, mtk_cpufreq_ready will register cooling > device again as well, but fail since the cooling device already created, > so we might need not register cooling device again on this case. Have you tested this yourself ? -- viresh -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
