Hi All, I have a question regarding the behavior of cpuidle on pandaboard.
1. cpuidle is enabled 2. The deep idle states seem to be reach for i in $(find /sys/devices/system/cpu -name "usage"); do echo "$i : $(cat $i)"; done /sys/devices/system/cpu/cpu0/cpuidle/state0/usage : 7049 /sys/devices/system/cpu/cpu0/cpuidle/state1/usage : 17 /sys/devices/system/cpu/cpu0/cpuidle/state2/usage : 1341 /sys/devices/system/cpu/cpu1/cpuidle/state0/usage : 6318 /sys/devices/system/cpu/cpu1/cpuidle/state1/usage : 17 /sys/devices/system/cpu/cpu1/cpuidle/state2/usage : 1341 3. Regarding the cpuidle driver code : the "state1" and "state2" are coupled states where the broadcast timer is used instead of the local timer. I assume this is because they go down when we reach these idle states. 4. The content of /proc/interrupts shows no broadcast timer used at all. ... IPI1: 0 0 Timer broadcast interrupts ... Shouldn't be the broadcast timer used sometimes ? or did I miss something ? Thanks. -- Daniel -- <http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs Follow Linaro: <http://www.facebook.com/pages/Linaro> Facebook | <http://twitter.com/#!/linaroorg> Twitter | <http://www.linaro.org/linaro-blog/> Blog _______________________________________________ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
