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SubjectRe: [PATCH v5] cpuidle: menu: Handle stopped tick more aggressively
On Tue, Aug 14, 2018 at 11:44:41PM +0800, leo.yan@linaro.org wrote:
> I agree this patch can resolve the issue you mentioned in the commit
> log, but this patch will be fragile for below case, so it will select
> state1 but not state2, how about you think for this case?
>
> Idle_state0::
> target_residency TICK_USEC Prediction
> | | /
> V V /
> -----------------------------------------------------> Time length
> ^ ^
> | |
> Idle_state1: Idle_state2:
> target_residency target_residency

If someone can demonstate this is an actual problem; then we need to fix
it I suppose. But it would be very good to have a real world
need/reproducer for it first.

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