Messages in this thread | | | Date | Sun, 8 Jun 2014 08:03:16 +0200 | From | Henrik Austad <> | Subject | Re: [RFC PATCH 02/16] sched: Introduce CONFIG_SCHED_ENERGY |
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On Fri, May 23, 2014 at 07:16:29PM +0100, Morten Rasmussen wrote: > The Energy-aware scheduler implementation is guarded by > CONFIG_SCHED_ENERGY. > > Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com> > Signed-off-by: Morten Rasmussen <morten.rasmussen@arm.com> > --- > arch/arm/Kconfig | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig > index ab438cb..bfc3a85 100644 > --- a/arch/arm/Kconfig > +++ b/arch/arm/Kconfig
Is this going to be duplicate for each architecture enabling this? Why not make a kernel/Kconfig.energy and link to that from those architectures using it?
> @@ -1926,6 +1926,11 @@ config XEN > help > Say Y if you want to run Linux in a Virtual Machine on Xen on ARM. > > +config SCHED_ENERGY > + bool "Energy-aware scheduling (EXPERIMENTAL)" > + help > + Highly experimental energy aware task scheduling. > +
how about adding *slightly* more info here? :) (yes, yes, I know it's an RFC)
""" Highly experimental energy aware task scheduling.
This will allow the kernel to keep track of energy required for different capacity levels for a given CPU. That way, the scheduler can make more informed decisions as to where a newly woken task should be placed. Heterogenous platform will benefit the most from this option.
Enabling this will add a significant overhead for a task-switch.
If unsure, say N here. """
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-- Henrik Austad
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