On 13 January 2012 16:13, Andy Green <andy.gr...@linaro.org> wrote: > On 01/13/2012 05:59 PM, Somebody in the thread at some point said: >> >> Hi, >> >> I'd like to do some tests with cpuidle on my panda board but i'm >> facing some issues: >> >> Originally, i'd like to use the Linaro developer image which uses the >> landing team branch tilt-linux-linaro-3.1 but the omap4 cpuidle driver >> only works when cpu1 is off whereas i'd like to do some test with both >> cpus. >> The android kernel has got a cpuidle driver which can enter C-states >> when both cpus are running and I was wondering if there is a plan to >> merge this driver into the tilt-linux-linaro-x.x branch ? maybe in 3.2 >> ? >> >> Then, when I'm testing the landing-panda-11.12-release android image >> on my panda board revA1, the cpuidle is using only C0 state (WFI) >> according to cpuidle stats. >> >> My test sequence: >> prevent suspend with: echo qwerty> /sys/power/wake_lock >> let android enter the early_suspend mode >> get cpuidle statistics on cpu0 et cpu1 in cpuidle/stateX/time : only >> state0 time is different from 0 >> >> Is it a normal behavior ? > > > No I think cpuidle is broken with what we have in tilt-3.1. > > It's worth trying tilt-tracking which, last time Jassi looked at it was > working and visiting all the C states. > IIRC, CPU_0 entered C1, C2 states only when the CPU_1 is offline, when I tested.
Vincent, would you remember exactly which android branch has it working with both cpus online? Cheers, Jassi _______________________________________________ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
