On Fri, 29 Feb 2008 19:38:12 +0100
Pierre Ossman <drzeus-list@xxxxxxxxx> wrote:
> @@ -50,9 +58,16 @@ static int menu_select(struct cpuidle_device *dev)
> break;
> if (s->exit_latency > pm_qos_requirement(PM_QOS_CPU_DMA_LATENCY))
> break;
> + if ((dev->states[i].flags & CPUIDLE_FLAG_DEEP) &&
> + time_before_eq(jiffies, data->last_deep_jif + MIN_DEEP_INTERVAL))
> + break;
> }
>
I guess another approach would be to refuse to enter deep sleep if the sleep time is less than 2 ms. That would mean we would not lose the long sleeps, but if it is just doing short sleeps then we would never enter C3...
Is there a decent way of testing which approach is actually doing the least damage?
Rgds
--
-- Pierre Ossman
Linux kernel, MMC maintainer http://www.kernel.org
PulseAudio, core developer http://pulseaudio.org
rdesktop, core developer http://www.rdesktop.org
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