Re: [PATCH 2/3] cpuidle: Add a debugfs entry to disable specific C state for debug purpose.

Matthew Garrett
2012-03-12T20:46:38Z

On Mon, Mar 12, 2012 at 05:21:33PM +0800, ShuoX Liu wrote:

> In addition, C state might have much impact on performance tuning,
> as it takes
> much time to enter/exit C states, which might delay interrupt
> processing. With
> the new debug option, developers could check if a deep C state could impact
> performance and how much impact it could cause.

Would anyone doing performance tuning not be using the cpu_dma_latency
interface?

--
Matthew Garrett | mjg59@srcf.ucam.org