Re: [PATCH 0/4][V2] cpuidle : multiple drivers support

Rafael J. Wysocki
2012-10-25T20:25:47Z

On Thursday, October 25, 2012 04:49:33 PM Peter De Schrijver wrote:
> On Fri, Oct 19, 2012 at 12:10:45PM +0200, Daniel Lezcano wrote:
> > The discussion about having different cpus on the system with
> > different latencies bring us to a first attemp by adding a
> > pointer in the cpuidle_device to the states array.
> >
> > But as Rafael suggested, it would make more sense to create a
> > driver per cpu [1].
> >
> > This patch adds support for multiple cpuidle drivers.
> >
> > It creates a per cpu cpuidle driver pointer.
> >
> > In order to not break the different drivers, the function cpuidle_register_driver
> > assign for each cpu, the driver.
> >
> > The multiple driver support is optional and if it is not set, the cpuide driver
> > core code remains the same (except some code reorganisation).
> >
> > I did the following tests compiled, booted, tested without/with CONFIG_CPU_IDLE,
> > with/without CONFIG_CPU_IDLE_MULTIPLE_DRIVERS.
> >
> > Tested on Core2 Duo T9500 with acpi_idle [and intel_idle]
> > Tested on ARM Dual Cortex-A9 U8500 (aka Snowball)
> >
> > V1 tested on Tegra3 and Vexpress TC2
> >
>
> V2 tested on Tegra3.

Do I assume correctly that Tested-by applies?

Rafael

--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.